Physiological processes and properties of the BLOOD.
Physiological processes and properties of the DENTITION.
Properties and processes of the DIGESTIVE SYSTEM and DENTITION as a whole or of any of its parts.
Physiology of the human and animal body, male or female, in the processes and characteristics of REPRODUCTION and the URINARY TRACT.
Properties, and processes of the MUSCULOSKELETAL SYSTEM and the NERVOUS SYSTEM or their parts.
Functional processes and properties characteristic of the BLOOD; CARDIOVASCULAR SYSTEM; and RESPIRATORY SYSTEM.
The properties and relationships and biological processes that characterize the nature and function of the SKIN and its appendages.
Nutritional physiology related to EXERCISE or ATHLETIC PERFORMANCE.
Physiological processes, factors, properties and characteristics pertaining to REPRODUCTION.
The functions and properties of living organisms, including both the physical and chemical factors and processes, supporting life in single- or multi-cell organisms from their origin through the progression of life.
Nutritional physiology of adults aged 65 years of age and older.
Properties, functions, and processes of the URINARY TRACT as a whole or of any of its parts.
Processes and properties of the MUSCULOSKELETAL SYSTEM.
Biological properties, processes, and activities of VIRUSES.
Properties and processes of the DIGESTIVE SYSTEM as a whole or of any of its parts.
Nutritional physiology of children aged 13-18 years.
Processes and properties of the EYE as a whole or of any of its parts.
Characteristic properties and processes of the NERVOUS SYSTEM as a whole or with reference to the peripheral or the CENTRAL NERVOUS SYSTEM.
Cellular processes, properties, and characteristics.
Physiological processes and properties of the RESPIRATORY SYSTEM as a whole or of any of its parts.
The functions of the skin in the human and animal body. It includes the pigmentation of the skin.
Nutrition of FEMALE during PREGNANCY.
The physiological processes, properties, and states characteristic of plants.
Physiological processes and properties of BACTERIA.
Processes and properties of the CARDIOVASCULAR SYSTEM as a whole or of any of its parts.
Nutrition of a mother which affects the health of the FETUS and INFANT as well as herself.
Nutritional physiology of children aged 2-12 years.
The processes and properties of living organisms by which they take in and balance the use of nutritive materials for energy, heat production, or building material for the growth, maintenance, or repair of tissues and the nutritive properties of FOOD.
A continuing periodic change in displacement with respect to a fixed reference. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
An occupational disorder resulting from prolonged exposure to vibration, affecting the fingers, hands, and forearms. It occurs in workers who regularly use vibrating tools such as jackhammers, power chain saws, riveters, etc. Symptoms include episodic finger blanching, NUMBNESS, tingling, and loss of nerve sensitivity.
An idiopathic vascular disorder characterized by bilateral Raynaud phenomenon, the abrupt onset of digital paleness or CYANOSIS in response to cold exposure or stress.
Four or five slender jointed digits in humans and primates, attached to each HAND.
An institute of the CENTERS FOR DISEASE CONTROL AND PREVENTION which is responsible for assuring safe and healthful working conditions and for developing standards of safety and health. Research activities are carried out pertinent to these goals.
Accidentally acquired infection in laboratory workers.
Diseases caused by factors involved in one's employment.

Mechanical stimulation regulates voltage-gated potassium currents in cardiac microvascular endothelial cells. (1/429)

Vascular endothelial cells are constantly exposed to mechanical forces resulting from blood flow and transmural pressure. The goal of this study was to determine whether mechanical stimulation alters the properties of endothelial voltage-gated K+ channels. Cardiac microvascular endothelial cells (CMECs) were isolated from rat ventricular muscle and cultured on thin sheets of silastic membranes. Membrane currents were measured with the use of the whole-cell arrangement of the patch-clamp technique in endothelial cells subjected to static stretch for 24 hours and compared with measurements from control, nonstretched cells. Voltage steps positive to -30 mV resulted in the activation of a time-dependent, delayed rectifier K+current (IK) in the endothelial cells. Mechanically induced increases of 97%, 355%, and 106% at +30 mV were measured in the peak amplitude of IK in cells stretched for 24 hours by 5%, 10%, and 15%, respectively. In addition, the half-maximal voltage required for IK activation was shifted from +34 mV in the nonstretched cells to -5 mV in the stretched cells. Although IK in both groups of CMECs was blocked to a similar extent by tetraethylammonium, currents in the stretched endothelial cells displayed an enhanced sensitivity to inhibition by charybdotoxin. Preincubation of the CMECs with either pertussis toxin or phorbol 12-myristate 13-acetate during the 24 hours of cell stretch did not prevent the increase in IK. The application of phorbol 12-myristate 13-acetate and static stretch stimulated the proliferation of CMECs. Stretch-induced regulation of K+ channels may be important to control the resting potential of the endothelium and may contribute to capillary growth during periods of mechanical perturbation.  (+info)

Validation of haemodialysis recirculation and access blood flow measured by thermodilution. (2/429)

BACKGROUND: Recirculation (R) and access blood flow (Qac) measurements are considered useful indicators of adequate delivery of haemodialysis. It was the purpose of this study to compare measurements of R and Qac obtained by two different techniques which are based on the same principle of indicator dilution, but which differ because of the characteristics of the injection and detection of the different indicators used. METHODS: Recirculation measured by a thermal dilution technique using temperature sensors (BTM, Fresenius Medical Care) was compared with recirculation measured by a validated saline dilution technique using ultrasonic transducers placed on arterial and venous segments of the extracorporeal circulation (HDM, Transonic Systems, Inc.). Calculated access flows were compared by Bland Altman analysis. Data are given as mean +/- SD. RESULTS: A total of 104 measurements obtained in 52 treatments (17 patients, 18 accesses) were compared. Recirculation measured with correct placement of blood lines and corrected for the effect of cardiopulmonary recirculation using the 'double recirculation technique' was -0.02 +/- 0.14% by the BTM technique and not different from the 0% measured by the HDM technique. Recirculation measured with reversed placement of blood lines and corrected for the effect of cardiopulmonary recirculation was 19.66 +/- 10.77% measured by the BTM technique compared with 20.87 +/- 11.64% measured by the HDM technique. The difference between techniques was small (-1.21 +/- 2.44%) albeit significant. Access flow calculated from BTM recirculation was 1328 +/- 627 ml/min compared with 1390 +/- 657 ml/min calculated by the HDM technique. There was no bias between techniques. CONCLUSION: BTM thermodilution yields results which are consistent with the HDM ultrasound dilution technique with regard to both recirculation and access flow measurement.  (+info)

Surfactant protein A enhances the binding and deacylation of E. coli LPS by alveolar macrophages. (3/429)

Surfactant protein (SP) A and SP-D are involved in multiple immunomodulatory functions of innate host defense partly via their interaction with alveolar macrophages (AMs). In addition, both SP-A and SP-D bind to bacterial lipopolysaccharide (LPS). To investigate the functional significance of this interaction, we first tested the ability of SP-A and SP-D to enhance the binding of tritium-labeled Escherichia coli LPS to AMs. In contrast to SP-D, SP-A enhanced the binding of LPS by AMs in a time-, temperature-, and concentration-dependent manner. Coincubation with surfactant-like lipids did not affect the SP-A-mediated enhancement of LPS binding. At SP-A-to-LPS molar ratios of 1:2-1:3, the LPS binding by AMs reached 270% of control values. Second, we investigated the role of SP-A in regulating the degradation of LPS by AMs. In the presence of SP-A, deacylation of LPS by AMs increased by approximately 2.3-fold. Pretreatment of AMs with phosphatidylinositol-specific phospholipase C had no effect on the SP-A-enhanced LPS binding but did reduce the amount of serum-enhanced LPS binding by 50%, suggesting that a cell surface molecule distinct from CD14 mediates the effect of SP-A. Together the results for the first time provide direct evidence that SP-A enhances LPS binding and degradation by AMs.  (+info)

Long-term culture of human CD34(+) progenitors with FLT3-ligand, thrombopoietin, and stem cell factor induces extensive amplification of a CD34(-)CD14(-) and a CD34(-)CD14(+) dendritic cell precursor. (4/429)

Current in vitro culture systems allow the generation of human dendritic cells (DCs), but the output of mature cells remains modest. This contrasts with the extensive amplification of hematopoietic progenitors achieved when culturing CD34(+) cells with FLT3-ligand and thrombopoietin. To test whether such cultures contained DC precursors, CD34(+) cord blood cells were incubated with the above cytokines, inducing on the mean a 250-fold and a 16,600-fold increase in total cell number after 4 and 8 weeks, respectively. The addition of stem cell factor induced a further fivefold increase in proliferation. The majority of the cells produced were CD34(-)CD1a- CD14(+) (p14(+)) and CD34(-)CD1a-CD14(-) (p14(-)) and did not display the morphology, surface markers, or allostimulatory capacity of DC. When cultured with granulocyte-macrophage colony-stimulating factor (GM-CSF) and interleukin-4 (IL-4), both subsets differentiated without further proliferation into immature (CD1a+, CD14(-), CD83(-)) macropinocytic DC. Mature (CD1a+, CD14(-), CD83(+)) DCs with high allostimulatory activity were generated if such cultures were supplemented with tumor necrosis factor-alpha (TNF). In addition, p14(-) cells generated CD14(+) cells with GM-CSF and TNF, which in turn, differentiated into DC when exposed to GM-CSF and IL-4. Similar results were obtained with frozen DC precursors and also when using pooled human serum AB+ instead of bovine serum, emphasizing that this system using CD34(+) cells may improve future prospects for immunotherapy.  (+info)

Low-molecular weight heparin restores in-vitro trophoblast invasiveness and differentiation in presence of immunoglobulin G fractions obtained from patients with antiphospholipid syndrome. (5/429)

The present study was designed to investigate the effects of immunoglobulin G obtained from patients with antiphospholipid syndrome (APS) on in-vitro models of trophoblast invasiveness and differentiation. We tested the binding of affinity-purified immunoglobulin G to human primary trophoblast cells. These antibodies affected the invasiveness and differentiation of cytotrophoblast cells after binding to the cell surface. In addition, we determined whether the drugs used to treat APS might be able to restore the trophoblast functions. Low-molecular weight heparin, in a dose-dependent manner, significantly reduced the immunoglobulin G binding to trophoblast cells and restored in-vitro placental invasiveness and differentiation. No effect was observed in the presence of acetylsalicylic acid. These observations may help in understanding the role of these treatments in women with APS.  (+info)

Partial characterization of apoptotic factor in Alzheimer plasma. (6/429)

We have previously demonstrated that a plasma natriuretic factor is present in Alzheimer's disease (AD), but not in multi-infarct dementia (MID) or normal controls (C). We postulated that the natriuretic factor might induce the increased cytosolic calcium reported in AD by inhibiting the sodium-calcium antiporter, thereby activating the apoptotic pathway. To test for a factor in AD plasma that induces apoptosis, we exposed nonconfluent cultured LLC-PK1 cells to plasma from AD, MID, and C for 2 h and performed a terminal transferase-dUTP-nick-end labeling (TUNEL) assay. The plasma from AD increased apoptosis nearly fourfold compared with MID and C. The effect was dose dependent and the peak effect was attained after a 2-h exposure. Additionally, apoptotic morphology was detected by electron microscopy, and internucleosomal DNA cleavage was found. We inhibited apoptosis by removing calcium from the medium, inhibiting protein synthesis with cycloheximide, alternately boiling or freezing and thawing the plasma, and digesting a partially purified fraction with trypsin. Heating AD plasma to 56 degrees C did not deactivate the apoptotic factor. These results demonstrate the presence of an apoptotic factor in the plasma of patients with AD.  (+info)

Delayed ischemic preconditioning is mediated by opening of ATP-sensitive potassium channels in the rabbit heart. (7/429)

Cardioprotection from preconditioning reappears 24 h after the initial stimulus. This phenomenon is called the second window of protection (SWOP). We hypothesized that opening of the ATP-sensitive potassium (KATP) channel mediates the protective effect of SWOP. Rabbits were preconditioned (PC) with four cycles of 5-min regional ischemia each followed by 10 min of reperfusion. Twenty-four hours later, the animals were subjected to sustained ischemia for 30 min followed by 180 min of reperfusion (I/R). Glibenclamide (Glib, 0.3 mg/kg ip) or 5-hydroxydecanoate (5-HD, 5 mg/kg iv) was used to block the KATP channel function. Infarct size was reduced from 41.2 +/- 2. 6% in sham-operated rabbits to 11.6 +/- 1.0% in PC rabbits, a 71% reduction (n = 11, P < 0.01). Treatment with Glib or 5-HD before I/R increased the infarct size to 43.4 +/- 2.6 and 37.8 +/- 1.9%, respectively (P < 0.01 vs. PC group, n = 12/group). Sham animals treated with either Glib or 5-HD had an infarct size of 39.0 +/- 3.4 and 37.8 +/- 1.5%, respectively, which was not different from control (40.0 +/- 3.8%) or sham (41.2 +/- 2.6%) I/R hearts. Monophasic action potential duration (APD) at 50% repolarization significantly shortened by 28.7, 26.6, and 23.3% in sham animals during 10, 20, and 30 min of ischemia. However, no further augmentation in the shortening of APD was observed in PC hearts. Glib and 5-HD significantly suppressed ischemia-induced epicardial APD shortening, suggesting that 5-HD may not be a selective blocker of the mitochondrial KATP channel in vivo. We conclude that SWOP is mediated by a KATP channel-sensitive mechanism that may have occurred because of the opening of the sarcolemmal KATP channel in vivo.  (+info)

Evidence of splanchnic-brain signaling in inhibition of ingestive behavior by middle molecules. (8/429)

Anorexia, nausea, and vomiting are common symptoms of uremic intoxication. Fractions in the middle molecule weight range, isolated from normal urine and uremic plasma ultrafiltrate, inhibit ingestive behavior in the rat. To investigate their site of action and specificity, male rats were injected intraperitoneally, intravenously, or intracerebroventricularly with concentrated fractions of uremic plasma ultrafiltrate or normal urine (molecular weight range: 1.0 to 5.0 kD) and tested for ingestive and sexual behavior. An intraperitoneal injection of 0.5 ml of urine fraction (10:1) or 2.0 ml of uremic plasma ultrafiltrate fraction (25:1) inhibited carbohydrate intake by 76.3 and 45.9%, respectively, but an intravenous injection had no effect. However, intravenous injection of higher doses inhibited carbohydrate ingestion. An intracerebroventricular injection of 5 or 10 microl of urine (20:1) middle molecule fraction inhibited carbohydrate intake by 13.4 and 41.6%, respectively. An injection of 5 or 10 microl of uremic plasma ultrafiltrate (125:1) middle molecule fraction inhibited carbohydrate intake by 22.6 and 49.5%, respectively. Injections of the corresponding fraction from normal plasma ultrafiltrate had no effect. Injection of urine or uremic plasma ultrafiltrate middle molecule fractions did not affect the display of sexual behavior. These results suggest that middle molecule fractions from uremic plasma ultrafiltrate or normal urine act in the splanchnic region and/or brain to inhibit food intake and that the effect is specific for ingestive behavior.  (+info)

HAVS is typically caused by prolonged exposure to vibrations from hand-held power tools, such as jackhammers, drills, and sanders. The vibrations can cause damage to the blood vessels, nerves, and joints in the hands, leading to the development of HAVS.

There are several risk factors for developing HAVS, including:

1. Prolonged exposure to hand-transmitted vibrations
2. Use of high-vibration tools and equipment
3. Poor tool maintenance and repair
4. Inadequate training on the safe use of tools and equipment
5. Smoking and other cardiovascular risk factors

The symptoms of HAVS can vary in severity and may include:

1. Numbness, tingling, or pain in the hands and fingers
2. Reduced dexterity and grip strength
3. Fatigue and weakness in the hands and arms
4. Tremors or spasms in the hands and fingers
5. Pale or discolored skin on the fingers and hands
6. Decreased sensation in the fingertips
7. Swelling, redness, or warmth in the hands and fingers

If left untreated, HAVS can lead to more severe symptoms, including:

1. Permanent nerve damage
2. Loss of dexterity and grip strength
3. Decreased sensation in the fingertips
4. Finger ulcers and amputations
5. Carpal tunnel syndrome
6. Other neurological disorders

There is no cure for HAVS, but it can be managed with a combination of medical treatment and lifestyle changes. Treatment options may include:

1. Medications to relieve symptoms such as pain and inflammation
2. Physical therapy to improve dexterity and grip strength
3. Lifestyle modifications such as avoiding cold temperatures and taking regular breaks to warm up hands
4. Assistive devices such as gloves, splints, or hand braces
5. Surgery in severe cases to relieve compression on nerves or repair damaged tissue.

Prevention is the best course of action for HAVS, and it involves taking steps to reduce exposure to cold temperatures and other risk factors. Some ways to prevent HAVS include:

1. Using proper protective gear such as gloves, hats, and scarves in cold environments
2. Avoiding prolonged exposure to cold temperatures
3. Taking regular breaks to warm up hands and fingers
4. Exercising regularly to improve circulation and reduce risk factors such as smoking and obesity
5. Maintaining a healthy diet and getting enough sleep.

The exact cause of Raynaud disease is not fully understood, but it is believed to be related to an autoimmune disorder, in which the body's immune system mistakenly attacks healthy tissue. The condition can occur on its own or as a secondary symptom of another underlying medical condition such as scleroderma or rheumatoid arthritis.

Symptoms of Raynaud Disease:

1) Discoloration: Raynaud disease causes the affected areas to turn white or blue in response to cold temperatures or stress.

2) Pain: The constriction of blood vessels can cause pain in the affected areas.

3) Numbness or tingling: The lack of blood flow can cause numbness or tingling sensations in the fingers and toes.

4) Swelling: In severe cases, swelling may occur in the affected areas.

5) Burning sensation: Some people with Raynaud disease may experience a burning sensation in their hands and feet.

Diagnosis of Raynaud Disease:

1) Medical history: A doctor will ask about symptoms, medical history, and any triggers that may cause the condition.

2) Physical examination: The doctor will perform a physical examination to look for signs of discoloration or swelling in the affected areas.

3) Tests: Additional tests such as nailfold capillary microscopy, pulse volume recording and thermography may be ordered to confirm the diagnosis.

Treatment options for Raynaud Disease:

1) Medications: Drugs such as calcium channel blockers, alpha-blockers, and anticoagulants can help to relax blood vessels and improve blood flow.

2) Lifestyle changes: Avoiding triggers such as cold temperatures and taking steps to keep hands and feet warm can help manage the condition.

3) Alternative therapies: Some people with Raynaud disease may find relief with alternative therapies such as acupuncture or biofeedback.

It is important to note that in some cases, Raynaud disease can be a symptom of an underlying autoimmune disorder, such as lupus or scleroderma. If you suspect you have Raynaud disease, it is essential to seek medical attention to rule out any other conditions.

A laboratory infection is an infection that occurs in a healthcare worker or laboratory personnel while working in a laboratory setting, typically with infectious agents such as bacteria, viruses, or fungi. These infections can be acquired through exposure to infected samples, equipment, or surfaces in the laboratory.

The risk of laboratory infection is higher in settings where high-risk agents are handled, such as in the study of highly infectious diseases like Ebola or SARS. The transmission of infectious agents in laboratories can occur through various routes, including:

1. Direct contact with infected samples or materials.
2. Contact with contaminated surfaces or equipment.
3. Inhalation of aerosols generated during procedures such as centrifugation or pipetting.
4. Exposure to infected personnel or animals in the laboratory.

To prevent laboratory infections, healthcare workers and laboratory personnel must follow strict safety protocols, including wearing personal protective equipment (PPE) such as gloves, gowns, and masks, and adhering to proper sterilization and decontamination techniques. Laboratories should also have ventilation systems that filter out infectious agents and should be designed with containment levels to minimize the risk of exposure.

Laboratory infections can have serious consequences for both the individuals involved and the broader community, including the potential for transmitting infectious diseases to others outside of the laboratory setting. Therefore, it is essential to have strict safety protocols and proper training for laboratory personnel to minimize the risk of laboratory-acquired infections.

1. Asbestosis: a lung disease caused by inhaling asbestos fibers.
2. Carpal tunnel syndrome: a nerve disorder caused by repetitive motion and pressure on the wrist.
3. Mesothelioma: a type of cancer caused by exposure to asbestos.
4. Pneumoconiosis: a lung disease caused by inhaling dust from mining or other heavy industries.
5. Repetitive strain injuries: injuries caused by repetitive motions, such as typing or using vibrating tools.
6. Skin conditions: such as skin irritation and dermatitis caused by exposure to chemicals or other substances in the workplace.
7. Hearing loss: caused by loud noises in the workplace.
8. Back injuries: caused by lifting, bending, or twisting.
9. Respiratory problems: such as asthma and other breathing difficulties caused by exposure to chemicals or dust in the workplace.
10. Cancer: caused by exposure to carcinogens such as radiation, certain chemicals, or heavy metals in the workplace.

Occupational diseases can be difficult to diagnose and treat, as they often develop gradually over time and may not be immediately attributed to the work environment. In some cases, these diseases may not appear until years after exposure has ended. It is important for workers to be aware of the potential health risks associated with their job and take steps to protect themselves, such as wearing protective gear, following safety protocols, and seeking regular medical check-ups. Employers also have a responsibility to provide a safe work environment and follow strict regulations to prevent the spread of occupational diseases.

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This phenomenon occurs due to dilation of the blood vessels, probably as a result of withdrawal of sympathetic nervous system ... One account for these physiological responses is the Bezold-Jarisch reflex. Vasovagal syncope may be part of an evolved ... When heart rate slows or blood pressure drops, the resulting lack of blood to the brain causes fainting. Typical triggers ... The underlying mechanism involves the nervous system slowing the heart rate and dilating blood vessels, resulting in low blood ...
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THAD is thought to be a physiological phenomenon resulting from regional variation in the blood supply by the portal vein and/ ...
... a mutation of a gene coding for an ion channel which disrupts electrical phenomenon underlying physiological processes. ... Brain slice preparations have debris, blood and lymph vessels or off target cells which may block the pipette from its target. ... Characterizing the opening dynamics of ion channels has provided crucial insights to physiological mechanisms underlying a ...
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The time in the "W" position will allow the pooled blood from the legs to be slowly re-introduced back into the body. By ... The most recent comprehensive study of this phenomenon was performed in 2016 by James Marc Beverly. The study, titled "Harness ... Suspension Stress Physiological and Safety Assessment", found no evidence to support medical intervention beyond ACLS for ... On the one hand, exercising the leg muscles will keep the blood returning to the torso, but on the other hand, as the movements ...
An unknown proportion of people may consciously initiate the sensation and physiological signs of piloerection. The phenomenon ... As the body prepares itself for either fighting or running, the sympathetic nervous system floods the blood with adrenaline ( ... Goose bumps are accompanied by a specific physiological response pattern that is thought to indicate the emotional state of ... Medications and herbal supplements that affect body temperature and blood flow may cause piloerection. For example, one of the ...
... pharmacology and pathology of blood pressure control and many other phenomena related to the contraction of smooth muscles. ... "The discovery of bradykinin has led to a new understanding of many physiological and pathological phenomena including ... which increases powerfully both the duration and magnitude of its effects on vasodilation and the consequent fall in blood ...
When "sent back" the demons produce no blood or gore, and for this reason it has been described as a non-violent game. The ... physiological arousal, and prosocial behavior: A meta-analytical review of the scientific literature". Psychological Science. ... and research into the phenomenon which had begun during the 1980s received renewed support and interest. In December 2001, ... Blood II: The Chosen (1998), Grand Theft Auto 2 (1999), and Requiem: Avenging Angel (1999) among others. In April 1999, the ...
The supposed HIT is a mixture derived from blood serum, including at least one opioid-like substance. DADLE is an opioid that ... This study built the first chronology of both ecological and physiological events from before the start to the end of ... further research has been unable to reproduce this phenomenon. Despite the inability to induce torpor, there are substances in ... Although research in the 1990s hinted at the ability to induce torpor in animals by injection of blood taken from a hibernating ...
... but afforded the first instance of the use of the graphic method in physiological inquiries. For researches on blood gases, he ... and he sought to explain them by reference to the same laws as are applicable in the case of physical and chemical phenomena. ... He devised the kymograph as a means of obtaining a written record of the variations in the pressure of the blood in the blood ... Under him the Physiological Institute at Leipzig became an organized center of physiological research, whence issued a steady ...
The goal of this approach is to discern meaningful, rather than causal, connections among the phenomena one seeks to understand ... physiological, psychological, placebo, social support, and spiritual. The spiritual mediator is a departure from the rest in ... due to factors such as increased blood flow to the head and nasal breathing. Overall, slight health benefits have been found ... or conduct to account in psychological terms for the rise of such phenomena, whether they be in individual lives to clarify the ...
Insulin is produced in response to rises in blood glucose levels. Binding of the hormone to insulin receptors on cells then ... Fell DA, Thomas S (October 1995). "Physiological control of metabolic flux: the requirement for multisite modulation". The ... Cellular phenomena Oncometabolism Reactome - Database of biological pathways KEGG - Collection of bioinformatics databases ... resource available within the tissue through glycogenesis which was usually being used to maintained glucose level in blood. ...
Basic blood biochemistry and cell counts can also be used to accurately predict the chronological age. It is also possible to ... Aging has been defined as "a progressive deterioration of physiological function, an intrinsic age-related process of loss of ... Dańko MJ, Kozłowski J, Schaible R (October 2015). "Unraveling the non-senescence phenomenon in Hydra". Journal of Theoretical ... Chemical damage to structural proteins can lead to loss of function; for example, damage to collagen of blood vessel walls can ...
Physiological phenomena whether at the cellular or molecular level in living organisms are driven either directly or indirectly ... The detection of an enzyme not known to be normally present in a sample of body fluid (e.g. blood serum, CSF, synovial fluid, ... physiological basis for disease resistance, developmental physiology and screening for commercially important enzymes and many ... milk, tears...etc.) using qualitative zymoblot is an indication of a physiological disorder, inflammatory reaction or ...
... the risk of heart disease greatly increases due to elevated blood sugar and blood pressure levels. Prolongation of this stress ... To better understand this phenomenon, a study was conducted in Canada after a two-month state of emergency was declared (2020 ... These all cause stressful times to have many physiological and behavioral impacts on one's diet. Furthermore, sleep deprivation ... As a result, someone with a consistent lack of sleep has higher blood pressure levels for longer periods of time. In a study ...
A natural physiological reaction to these threshold shifts is vasoconstriction, which will reduce the amount of blood reaching ... Common groups at risk of becoming victim to this phenomenon include avid listeners of music and others who listen or work with ... eds.). Cochlear Blood Flow Changes With Short Sound Stimulation. Scientific basis of noise-induced hearing loss. New York ... However, it is evident that the issue is at least partly physiological in nature. In cases of sensory overload not related to ...
His research interests are the regulation of blood pressure and the effect of high blood pressure on the kidneys. He also ... Bras has specialized in the interpretation of natural phenomena as random functions. He has been recognized for his use of ... The polymides are very strong in terms of their mechanical properties, yet degradable under standard physiological conditions ... a hormone system that helps regulate long-term blood pressure and blood volume in the body and is controlled primarily by the ...
Blood pressure is another physiological aspect effected by anger, with increased levels of anger being correlated with higher ... Wright, Day, & Howells referred to this phenomenon as the "hijacking of the cognitive system by the emotional system". Second, ... The implications of an effect on blood pressure for overall health is made evident by the link between high blood pressure and ... Mindfulness is also a technique used in the relaxation approach because the technique halts physiological arousal. An example ...
... synaptic fatigue in order to prevent the detrimental physiological consequences that could result from dysfunctional blood ... The difference between this and long-term potentiation is the fact that this phenomenon only occurs for the duration of time it ... There have been several studies that suggest the reserve vesicles are seldom ever released in response to physiological stimuli ... Maintaining a readily releasable vesicle pool is important in allowing for the constant ability to pass physiological signals ...
Within blood, thrombins cleave fibrinogens to fibrins during coagulation and a fibrin-based blood clot forms. Factor XIII is a ... Physiological Reviews. 91 (3): 931-72. doi:10.1152/physrev.00016.2010. PMID 21742792. S2CID 24703788. Laki K, Lóránd L ( ... while a stabilized clot is resistant to this phenomenon. Deficiency of Factor XIII (FXIIID), while generally rare, does occur, ... A and B units combine within blood to form heterotetramers of two A units and two B units. Blood plasma concentration of the ...
... where Fi is blood flow (noted Q in the Figure above), Cart incoming arterial blood concentration, Pi the tissue over blood ... PBPK models try to rely a priori on the anatomical and physiological structure of the body, and to a certain extent, on ... and chemical descriptions of the phenomena involved in the complex ADME processes. A large degree of residual simplification ... Blood flow, assuming that the drug is transported mainly by blood, as is often the case, is then the limiting factor to ...
Simka M (May 2009). "Blood brain barrier compromise with endothelial inflammation may lead to autoimmune loss of myelin during ... is claimed to be a pathologic phenomenon exclusively seen in multiple sclerosis (MS). Lee AB, Laredo J, Neville R (April 2010 ... of absence of flow and the criterion regarding stenosis are considered not valid since they are related to normal physiological ... Zamboni theorized that malformed blood vessels cause increased deposition of iron in the brain, which in turn triggers ...
Physiological enzyme inhibition can also be produced by specific protein inhibitors. This mechanism occurs in the pancreas, ... This signalling molecule triggers smooth muscle relaxation and allows blood flow into the corpus cavernosum, which causes an ... Enzyme inactivation is generally explained as a chemical process involving several phenomena like aggregation, dissociation ... Other examples of physiological enzyme inhibitor proteins include the barstar inhibitor of the bacterial ribonuclease barnase. ...
Biopolitics: Ethological and physiological approaches. New York: Jossey-Bass. (ISBN 978-0875898513) McHugo, Gregory J., ... Coplan MJ, Patch SC, Masters RD, Bachman MS (2007). "Confirmation of and explanations for elevated blood lead and other ... Ostracism: A Social and Biological Phenomenon. (ISBN 0-317-55376-3). Masters, ... Masters RD, Coplan MJ, Hone BT, Dykes JE (2000). "Association of silicofluoride treated water with elevated blood lead". ...
Blood and earth are unified in Kufayev's vision, emphasising our origins and our certain end. - Robin Dutt, writer and art ... Igor states that these phenomena are both a result of release of stress, as well as the "Song of the Goddess" - literally a ... Igor emphasizes the psycho-physiological aspects of the awakening process, stressing the importance of the physical ...
This phenomenon allows neighboring cells adjacent to the apoptotic cell sending out the find me signal to be engulfed without ... doi:10.1182/blood-2008-06-162404. Retrieved 2022-12-05.{{cite web}}: CS1 maint: multiple names: authors list (link) CS1 maint: ... Schetinger, Morsch, Bonan, Wyse (2008). "NTPDase and 5'-nucleotidase activities in physiological and disease conditions: New ... Blood. 115 (17): 3531-3540 - via ASH Publications.{{cite journal}}: CS1 maint: multiple names: authors list (link) Truman, Ford ...
This diuresis leaves less water to be reabsorbed into the blood, resulting in a decrease in blood volume. A secondary effect of ... Prolonged usage of loop diuretics will also contributes to resistance through "braking phenomenon". This is the body ... physiological response to reduced extracellular fluid volume, where renin-angiotensin-aldosterone system will be activated ... The collective effects of decreased blood volume and vasodilation decrease blood pressure and ameliorate edema. Loop diuretics ...
In very high dose radiation therapy, it was known at the time that radiation can cause a physiological increase in the rate of ... November 2011). "Chromosome aberrations in peripheral blood lymphocytes of individuals living in high background radiation ... a dose-response phenomenon characterized by low-dose stimulation and high-dose inhibition. Calabrese EJ (October 2015). "On the ...
This kind of hypoglycaemia is defined as having an abnormally low blood-sugar level due to anything other than the exogenous ... Thus, when a patient reaches for an enlarged object, he or she is overcoming that physiological contraction. However, this ... The differences in visual phenomena, such as macropsia with slow motion versus macropsia without slow motion, may result from ... One competing theory has radically stated that macropsia may be an entirely psychological pathological phenomenon without any ...
It lacks phenomena of intracellular compartmentalization or sequestration as is often seen for Voltage-sensitive dyes, and does ... She notes that their cited safety studies are all rat studies and their claim that apoaequorin crosses the blood-brain barrier ... the first experiments involving the injection of the protein into the tissues of living animals to visualize the physiological ...
A similar phenomenon occurs in elephants, bighorn sheep, and fallow deer, where the females stay close to dominant males for ... In dogs, the male has a knot in his penis that gets engorged with blood and ties the female, locking them together during ... Behavioral and physiological female responses to male sex ratio bias in a pond-breeding amphibian. Frontiers in Zoology 9, 24 ( ...
... s are most commonly recognized as components of hemoglobin, the red pigment in blood, but are also found in a number of ... This phenomenon, which states that hemoglobin's oxygen binding affinity is inversely proportional to both acidity and ... However, due to its toxic properties, proteins such as Hemopexin (Hx) are required to help maintain physiological stores of ... The word haem is derived from Greek αἷμα haima meaning "blood". Hemoproteins have diverse biological functions including the ...
The levels of this enzyme in the blood depend on factors such as age, sex, or blood type. Blood levels of alkaline phosphatase ... In such a case, the phenomenon is referred to as intragenic complementation. E. coli alkaline phosphatase, a dimer enzyme, ... Higher than typical levels are seen in the physiological response, the leukemoid reaction, and in pathologies that include ... The level of alkaline phosphatase in the blood is checked through the ALP test, which is often part of routine blood tests. ...
Blood flow (+3⁄4) and resistance (-3⁄4) scale in the same way, leading to blood pressure being constant across species. Hu and ... Other examples include the following: Physiological design Basic physiological design plays a role in the size of a given ... In biology this is appropriate because many biological phenomena (e.g. growth, reproduction, metabolism, sensation) are ... Physiological scaling in muscles affects the number of muscle fibers and their intrinsic speed to determine the maximum power ...
Low dosages of testosterone that result in physiological levels of testosterone (< 50 ng/dL) do not increase sexual desire in ... Ziegler T. E. (2007). "Female sexual motivation during non-fertile periods: a primate phenomenon". Hormones and Behavior. 51 (1 ... and Clinical Implications of Elevated Blood Levels". Endocr. Rev. 38 (3): 220-254. doi:10.1210/er.2016-1067. PMC 6459338. PMID ... There is little support for the notion that physiological levels of testosterone are important for sexual desire in women, ...
... is an instrument that measures and records several physiological indices such as blood pressure, pulse, respiration, and skin ... Although he was not the first to notice this phenomenon, as the holder of 120 patents, Spencer was no stranger to discovery and ... in the belief that deceptive answers will produce physiological responses that can be differentiated from those associated with ... high frequency alternating current phenomena, electrotherapy, and the transmission of electrical energy without wires for point ...
Physiological PhenomenaBlood Physiological PhenomenaAcid-Base EquilibriumBleeding TimeBlood Bactericidal ActivityBlood Cell ... Platelet CountBlood Group IncompatibilityRh IsoimmunizationBlood VolumeCerebral Blood VolumeErythrocyte VolumePlasma Volume ... Blood/physiology (1966-1997). All MeSH CategoriesPhenomena and Processes CategoryCirculatory and Respiratory ... HemorheologyBlood ViscosityErythrocyte AggregationErythrocyte DeformabilityHematocritPlatelet AggregationHemostasisBlood ...
Start Over You searched for: Subjects Blood Physiological Phenomena ✖Remove constraint Subjects: Blood Physiological Phenomena ... Blood Physiological Phenomena. Blood Circulation 5. Notes of M. Bernards lectures on the blood: with an appendix ... Blood Physiological Phenomena. Blood Circulation 6. A treatise on the blood, inflammation, and gun-shot wounds ... Blood Physiological Phenomena 9. Physiology of the blood Author(s): Atkinson, William H., 1815-1891, author Publication: [New ...
Blood Flow Velocity * Cardiovascular Physiological Phenomena* * Hemodynamics* * Humans * Hydrodynamics* * Models, ... time and develop an automated framework to generate appropriate initial conditions from a one-dimensional model of blood flow. ...
Nutritional Physiological Phenomena* Actions. * Search in PubMed * Search in MeSH * Add to Search ... Maternal energy stores and diet composition during pregnancy program adolescent blood pressure L S Adair 1 , C W Kuzawa, J ... Maternal energy stores and diet composition during pregnancy program adolescent blood pressure L S Adair et al. Circulation. ... Maternal nutritional status in pregnancy and blood pressure in childhood. Godfrey KM, Forrester T, Barker DJ, Jackson AA, ...
Nutritional Physiological Phenomena; Postpartum Period/blood; Postpartum Period/metabolism; Pregnancy; Pregnancy Trimester, ... Eicosanoic Acids/blood; Energy Intake/physiology*; Fatty Acids, Unsaturated/analysis; Fatty Acids, Unsaturated/blood; Fatty ... MeSH Terms: Adult; Animals; Child Development/physiology; Diet; Docosahexaenoic Acids/analysis; Docosahexaenoic Acids/blood; ...
Cardiovascular Physiological Phenomena, Blood Circulation, Vascular Diseases, Blood Vessels, Vascular Surgical Procedures, ... Cardiovascular Physiological Phenomena, Blood Circulation, Vascular Diseases, Arterial Pressure, Coronary Disease, Acute ... Cardiovascular Physiological Phenomena, Blood Circulation, Vascular Diseases, Arterial Pressure, Coronary Disease, Acute ...
Blood Physiological Concepts Blood Physiological Phenomenon Blood Physiological Processes Blood Physiology Physiology, Blood ... Physiological processes and properties of the BLOOD.. Terms. Blood Physiological Phenomena Preferred Term Term UI T721880. Date ... Circulatory and Respiratory Physiological Phenomena [G09] * Blood Physiological Phenomena [G09.188] * Acid-Base Equilibrium [ ... 2009; see BLOOD PHYSIOLOGY 1998-2008; for BLOOD PHYSIOLOGICAL PROCESSES see BLOOD PHYSIOLOGICAL PROCESSES 2004-2016. History ...
For patient education information, see the Pregnancy Center, as well as Kidney Stones, Blood in the Urine, and Urinary Tract ... 10] Early theories suggest that hydronephrosis of pregnancy may be a hormonally induced phenomenon whereby ureteral smooth ... Pregnancy-related events that tend to enhance stone formation include decreased ureteral peristalsis, physiological ... 9] Coincident to the increased hypercalciuria in pregnancy is an increase in total circulating blood volume, making the ...
Prevalence and predictors of white-coat hypertension in a large database of ambulatory blood pressure monitoring ... The WCE and WCH differ in their definitions, physiological mechanisms and clinical significance [14]. WCE is a phenomenon which ... Effect of blood pressure measured by the doctor on patients blood pressure and heart rate. Lancet, 1983, 2:695-8. ... 24-hour blood pressure monitoring: evaluation of Spacelabs 5300 monitor by comparison with intra-arterial blood pressure ...
... a condition also known as vibration white finger and as Raynauds phenomenon of occupational origin ... Likewise, the physiological or chemical changes due to vibration in the blood and blood vessels can only be speculated upon at ... Raynauds phenomenon was first described as "a condition, a local syncope [loss of blood circulation], where persons see one or ... Table I-1. Differential Diagnosis-Raynauds Phenomenon. Differential Diagnosis-Raynauds Phenomenon. Primary:. Raynauds ...
Drug addiction is a cluster of behavioral, cognitive, and physiological phenomena that may include a strong desire to take the ... Increased blood pressure and heart rate. Your healthcare provider should check you or your childs blood pressure and heart ... Increased Blood Pressure and Heart Rate CNS stimulants cause an increase in blood pressure (mean increase about 2 to 4 mm Hg) ... Increased Blood Pressure and Heart Rate Advise patients that amphetamine sulfate tablets can elevate blood pressure and heart ...
Drug addiction is a cluster of behavioral, cognitive, and physiological phenomena that may include a strong desire to take the ... Increased Blood Pressure and Heart Rate CNS stimulants cause an increase in blood pressure (mean increase about 2 to 4 mm Hg) ... Increased blood pressure and heart rate. Your healthcare provider should check you or your childs blood pressure and heart ... Increased Blood Pressure and Heart Rate Advise patients that amphetamine sulfate can elevate blood pressure and heart rate (see ...
... systems biology is defined as an approach to explaining and predicting complex cellular and physiological phenomena of living ... Division of Blood Diseases and Resources National Heart, Lung, and Blood Institute. 6701 Rockledge Drive Rockledge II, Room ... National Heart, Lung, and Blood Institute. 6701 Rockledge Drive Rockledge II, Room 9142 Bethesda, MD 20892 Telephone: (301) 435 ... National Heart, Lung, and Blood Institute Two Rockledge Center, Room 7214 6701 Rockledge Drive. Bethesda, MD 20892-7924 ( ...
However, the physiological mechanisms regulating placental blood flow are not well understood. Researchers supported by NICHD ... The same research team also identified a new physiological phenomenon, the "utero-placental pump," by which the placenta and ... Understanding Placental Blood Flow Patterns in Pregnancy. Preeclampsia has been linked to poor blood vessel development and ... The condition can lead to poor regulation of blood pressure in the pregnant person. Proper blood flow is essential for ensuring ...
... blood or serum transfusions result in morphological/physiological changes attributed to mitochondria. ... Ant: My intuition (aligned with Penrose) is that consciousness is a non-local quantum domain phenomenon. Ever ponder why organ ...
J Cereb Blood Flow Metab 37 (3): 1120-1136.. Royea J, Zhang L, Tong X-K, Hamel E. (2017) The angiotensin IV receptor: a ... a phenomenon commonly referred to "neurovascular coupling." These interactions are at the basis of several brain-imaging ... techniques that use hemodynamic signals to map changes in brain activity under physiological and pathological conditions. The ... J Cereb Blood Flow Metab, 35(3):512-520.. Lacroix A, Toussay X, Anenberg E, Lecrux C, Karagiannis A, Plaisier F, Chausson P, ...
With this in mind, I think it is a physiological phenomenon, because I am reminded of how staring at the sun or a bright light ... like i burst a blood vessel or something. i recently learned this is my eyes filling with blood, (also like i burst a blood ... Is it possible that theres a (more) physiological rather than psychological explanation for this phenomenon? Ive just ... I figure it was from dilated blood vessels in the retina. I hate to think what my blood pressure must have been at the time!. ...
These results are fully coherent with the physiological observation and raises the question: how the control of ventilation ... exchanges with blood and a sinusoidal ventilation. Then we optimize the power dissipated by the ventilation of our model ... These results are fully coherent with the physiological observation and raises the question: how the control of ventilation ... Our model is able to predict physiological ventilation properties and brings interesting insights on the robustness of ...
Blood Physiological Concepts, Blood Physiological Phenomena, Blood Physiological Phenomenon, Blood Physiological Physiological ... Blood Physiological Concept Blood Physiological Concepts Blood Physiological Phenomenas Blood Physiological Phenomenon Blood ... Concept, Blood Physiological. Concepts, Blood Physiological. Phenomena, Blood Physiological. Phenomenon, Blood Physiological. ... Blood Physiological Concept. Blood Physiological Concepts. Blood Physiological Phenomenas. Blood Physiological Phenomenon. ...
Blood Physiological Concepts Blood Physiological Phenomenon Blood Physiological Processes Blood Physiology Physiology, Blood ... Physiological processes and properties of the BLOOD.. Terms. Blood Physiological Phenomena Preferred Term Term UI T721880. Date ... Circulatory and Respiratory Physiological Phenomena [G09] * Blood Physiological Phenomena [G09.188] * Acid-Base Equilibrium [ ... 2009; see BLOOD PHYSIOLOGY 1998-2008; for BLOOD PHYSIOLOGICAL PROCESSES see BLOOD PHYSIOLOGICAL PROCESSES 2004-2016. History ...
Future research may provide insights into disorders related to blood clotting or stroke in humans. ... Red blood cell distribution in the glassfrog. Photoacoustic microscopy images that show the circulating red blood cells within ... we really know very little about this important physiological function in glassfrogs, but we are actively working to understand ... this phenomenon, which has significant clinical implications," said Yao. "This anti-clotting mechanism is highly relevant for ...
... infant nutritional physiological phenomenon,orgf murf,murf,C1540060,trim54,gngm kinectin,kinectin,C1416766,cg1 antigen,gngm ... gngm abo blood groups,abo blood group,C0000778,abo blood-group system,bdsy head of distal phalanx of second finger,head of ... bpoc blood vessel of head,blood vessel of head,C1276270,blood vessel of head,bpoc na,na,C1417587,neuroacanthocytosis,gngm nb,nb ... bpoc blood flow 2.max,blood flow 2 . max,C0805333,blood flow 2.max,orga lateral surface of right calcaneus,lateral surface of ...
Urinary fibrinolysis, usually a normal physiological phenomenon, may frequently be associated with life-threatening ... There are presently available: (a) general tests such as those for the determination of the lysis of a clot of blood or plasma ... In life-threatening situations, fresh whole blood transfusions, fibrinogen infusions, and other emergency measures may be ... and high levels of benzyl alcohol and its metabolites found in the blood and urine, has been associated with exposure to benzyl ...
Blood pressure is not a static parameter, but rather undergoes continuous fluctuations over time, as ... Beat-to-beat blood pressure and two-dimensional (axial and radial) motion of the carotid artery wall: physiological evaluation ... home and ambulatory BP monitoring approaches reflect different pathophysiological phenomena and therefore are complementary in ... blood pressure variability; blood pressure variability assessment methodology; blood pressure variability management; ...
2 Blood Transfusion --adverse effects. *1 Blackwater Fever --complications. *1 Blood Physiological Phenomena ... Blood transfusion services: blood safety in India.. Talib, V H; Khurana, S K; Verma, S K; Ranga, S. ...
See also Blood Circulation See also Cardiovascular Abnormalities See also Cardiovascular Physiological Phenomena ...
  • These projects will combine computational modeling and simulation approaches with experimental validation of model predictions to advance understanding the normal physiology and perturbations associated with heart, lung, blood, and sleep (HLBS) disorders. (
  • This approach yields a more accurate, more robust measurement capability with improved bandwidth that allows new analytical approaches for assessing the physiology of skull expansion under pulsatile cerebral blood flow. (
  • In vertebrates like humans, tissue transparency is particularly difficult to achieve, as our circulatory systems are filled with oxygen-carrying red blood cells that strongly absorb light and render our tissues opaque," explained NIBIB-funded researcher Junjie Yao, Ph.D., an assistant professor of biomedical engineering at Duke University. (
  • Understanding this blood flow mechanism in the glassfrog may provide insights into disorders related to blood clotting or stroke in humans. (
  • It offers the possibility for the monitoring of transcranial expansion and related physiological phenomena in humans resulting from variations in intracranial pressure (ICP) caused by injuries to the head and/or brain pathologies. (
  • Hence, the control of ventilation is coupled to the control of heart rate, so that both lung ventilation and blood circulation are coordinated in order to cope with body needs. (
  • The amount of power spent for ventilation comes from two main physical phenomena: the dissipation due to air circulation in the bronchi, related to the hydrodynamic resistance of the lung, and to the elastic power stored in lung's tissue. (
  • Their findings, recently published on the cover of Science , demonstrate that glassfrogs can remove almost 90% of their red blood cells from circulation, storing them in the liver during rest. (
  • This means that the glassfrog depletes its red blood cells from circulation during rest, allowing for enhanced tissue transparency and camouflage during this vulnerable time. (
  • These fats are known to be bad cholesterol as they have a bad impact on cardiac health and blood circulation. (
  • We propose a model for oxygen and carbon dioxide transport in the lung that accounts for the core physical phenomena: lung's tree-like geometry, transport of gas by convection and diffusion, exchanges with blood and a sinusoidal ventilation. (
  • Physiological processes and properties of the BLOOD. (
  • Vasoconstriction is a physiological or induced process in which the blood vessels become narrower due to the contraction of the smooth muscles that line the walls of the vessels. (
  • Relying on splitting time schemes established for fluid-structure interaction to model blood vessels, we propose a semi-implicit discretization of a general poromechanics formulation, satisfying a discrete energy balance. (
  • Salty Food - The sodium present in salt can lead to water retention which will increase blood volume, thus constricting the blood vessels. (
  • Alcohol - Moderate and heavy consumption of alcohol can lead to thickening of the walls of the blood vessels and thus, cause vasoconstriction. (
  • Monosodium Glutamate - Commonly used as a flavor enhancer, MSG helps open up the calcium channels, thus causing constricting effect on the blood vessels. (
  • Medications - Since the blood vessels become narrow, medications that act as vasodilators can be used to increase the blood flow. (
  • Impeded blood flow within the placenta has been linked to pregnancy-related hypertensive disorders, including preeclampsia . (
  • Candidates did not accurately define V/Q inequality and the physiological factors causing this phenomenon. (
  • The transfer of these two species between lung and blood are driven by the amount of blood flow in pulmonary capillaries, the gradient of the partial pressure between alveoli and capillaries, the blood/alveoli membrane characteristics and the properties of the ventilation cycle. (
  • Researchers supported by NICHD through the Human Placenta Project are using novel magnetic resonance imaging (MRI) techniques to study blood flow, oxygenation, and other physiological characteristics of the placenta-and their potential relationship to preeclampsia and other high-risk pregnancy conditions. (
  • For two-year-old rats, low content of erythrocytes-disconcytes in the blood and an excess number of erythrocytes with a modified shape, as well as an increase in their aggregation, are characteristics. (
  • The lower the V/Q ratio, the closer the effluent blood composition gets to mixed venous blood, i.e. to "true" shunt. (
  • However, the physiological mechanisms regulating placental blood flow are not well understood. (
  • Researchers said this is an important discovery that provides a better understanding of the physiological mechanisms necessary for maintaining optimal blood and oxygen exchange levels between the mother and fetus. (
  • In our study, we have discovered that the glassfrog can conceal nearly all of its red blood cells within its liver on a daily basis, resulting in a unique form of camouflage that is distinct from all other known mechanisms of tissue transparency. (
  • To understand the mechanism of this transparency, the researchers first used spectroscopy techniques to passively measure glassfrog's levels of hemoglobin (a protein in red blood cells that carries oxygen and absorbs light). (
  • This method has been demonstrated to induce the rapid binding of albumin from single and binary protein solutions, from plasma, and apparently, from whole blood. (
  • Peripheral actions include elevations of systolic and diastolic blood pressures, and weak bronchodilator, and respiratory stimulant action. (
  • Short/branched chain acyl-CoA dehydrogenase and Sah also showed a significant association with systolic blood pressure. (
  • From there, diffusion occurs downward the bronchial tree for oxygen, as blood acts as an oxygen pump, and upward the bronchial tree for carbon dioxide, as blood acts as a carbon dioxide source. (
  • The same research team also identified a new physiological phenomenon, the "utero-placental pump," by which the placenta and underlying uterine wall contract independently of the rest of the uterus to expel maternal blood. (
  • Regulation is performed through inputs from sensors, amongst which sensors to oxygen and carbon dioxide partial pressure in blood play a crucial role. (
  • As a consequence, partial pressure in oxygen and carbon dioxide in blood are strongly regulated in mammals ( Weibel, 1984 ). (
  • The control of ventilation is based on the regulation of the volume of air that is internalized (ventilation amplitude) and the frequency at which this volume of air is renewed (ventilation frequency) with the aim to keep oxygen and carbon dioxide partial pressure constant in blood. (
  • Some medical conditions, particularly fractures, lacerations, costoclavicular syndrome, connective tissue diseases, vascular disorders such as Buerger's disease, generalized atherosclerosis, or a long history of high blood pressure, may result in the same signs and symptoms as primary Raynaud's phenomenon. (
  • A total of 2462 patients underwent ambulatory blood pressure monitoring either in borderline hypertension (group 1) or for assessment of antihypertensive treatment (group 2) or for hypotension (group 3). (
  • WCE is defined as the transient rise in blood pressure (BP) from before to during the clinic visit, whereas WCH (also referred to as "office hypertension" or "isolated clinical hypertension") is generally defined as persistently elevated office BP in the presence of a normal BP outside the office, regardless of the extent of the WCE [1]. (
  • The condition can lead to poor regulation of blood pressure in the pregnant person. (
  • This method monitors transcranial expansion and related physiological phenomena resulting from variations in intracranial pressure (ICP). (
  • Several studies have suggested that this enzyme may play a role in blood pressure regulation. (
  • A genome-wide quantitative trait loci (QTL) analysis of blood pressure using 107 F2 rats indicated that a statistically significant QTL for pulse pressure was located at the Comt locus in chromosome 11. (
  • However, COMT inhibitors had no significant effects on blood pressure in either DS or LEW rats. (
  • In a previous study, we performed a genome-wide quantitative trait loci (QTLs) analysis for blood pressure using F2 rats derived from Dahl salt-sensitive (DS) and Lewis (LEW) rats and identified two QTLs that influenced blood pressure levels. (
  • The purpose of the present study was to identify candidate genes that influence blood pressure in the Ch10 QTL region. (
  • Intriguingly, this Ch10 QTL for blood pressure was also a possible QTL for urinary albumin excretion. (
  • We obtained 101 F2 male rats from Dahl-S and Lewis rats and performed precise measurements of blood pressure (BP) and heart rate by telemetric monitoring at 14 weeks of age after 9 weeks of salt-loading. (
  • Blood Pressure. (
  • Heart rate, blood pressure, gastrointestinal motility, galvanic skin response, and biochemical indicators were measured as physiological responses, and affective and semantic rating scales were used as subjective responses. (
  • Licorice - The extract of licorice root that's often used in alcoholic drinks, candy, tea, etc. contains a compound called glycyrrhizin acid which causes potassium loss and sodium retention in the body that increases blood pressure. (
  • Describe the effects of V/Q inequality on the partial pressure of oxygen (PaO2) and carbon dioxide (PaCO2) in arterial blood. (
  • While oxygen directly affects the cells' access to energy, carbon dioxide drives blood pH, whose allowed range for healthy cellular function is tight ( Madshus, 1988 ). (
  • In order for ventilation to handle blood homeostasy, it has to drag from blood a sufficient amount of carbon dioxide and to feed blood with sufficient amounts of oxygen. (
  • This physiological phenomenon is quite important in preventing blood loss during injuries, hemorrhages, etc. and also helps in heat preservation. (
  • Influence of endogenous albumin binding on blood-material interactions. (
  • It is important to remember that this is a physiological response - it doesn't mean you want to have sex with the gym! (
  • Proper blood flow is essential for ensuring the fetus receives sufficient oxygen and nutrients during development. (
  • By contrast, in pregnant women with preeclampsia, researchers observed faster rates of blood flow and lower and more variable oxygen rates across the placenta compared with the healthy pregnancy group. (
  • Providing new insights into placental blood flow, oxygen transport, and how the placenta and uterus contract independently can help researchers develop new clinical tests to identify at-risk pregnancies. (
  • Since IFN-γ and T-bet can be detected in peripheral blood of AA patients, it was believed autoreactive T lymphocytes were invovled in destroying the hematopoietic stem cells (HSCs) in the bone marrow (BM). (
  • Our model is able to predict physiological ventilation properties and brings interesting insights on the robustness of different regimes. (
  • Preeclampsia has been linked to poor blood vessel development and blood flow within the placenta. (
  • To better understand blood flow and oxygenation patterns within the placenta, researchers from the Sir Peter Mansfield Imaging Centre in Nottingham, United Kingdom, used phase contrast angiography (PCA) and diffusion-weighted imaging (DWI) MRI techniques to compare these patterns in women with healthy pregnancies and in women with preeclampsia. (
  • In one study , researchers found that in healthy pregnancies, blood flow speed decreased from the uterine wall through to the placenta. (
  • Caption: Map of the net speed of blood flow in the placenta at the level of the MRI voxels. (
  • Additional research is needed to investigate the links between oxygenation and blood flow during contractions and identify what triggers these contractions. (
  • Photoacoustic microscopy allowed us to capture the blood flow dynamics of the glassfrogs, even though those changes occur deep inside their opaque internal organs," explained Carlos Taboada, Ph.D., a postdoctoral associate at Duke University and one of the leading authors of this study. (
  • Traditional imaging methods can't track blood flow with such a high level of accuracy or tell us exactly where the glassfrogs are storing their red blood cells. (
  • Grace agrees and adds that people may also be experiencing physiological arousal that builds during exercise, like increased blood flow and a quickening heart rate. (
  • This mainly occurs in the small arterioles as well as large arteries and reduces the blood flow to different parts of the body. (
  • Vasoconstriction impedes regular blood flow that not only affects the overall health of an individual, but can also have an impact on cardiac health, leading to fatality in the long term. (
  • The inability of high V/Q areas to compensate for low V/Q zones owing to the relatively small contribution of blood flow from these high V/Q units was not discussed. (
  • The progression of aging affects various blood parameters, which can weaken the viability of the body. (
  • Baroreflex Sensitivity, Cardiac and Kidney Remodeling and Deterioration in Vasoactive Substances Content in Blood in Experimental Model of Renovascular Hypertension. (
  • The National Heart, Lung, and Blood Institute (NHLBI) invites applications for collaborative research projects to initiate high-risk, high impact research by multidisciplinary teams of investigators. (
  • The authors conclude that physiological responses to sound bear uncertain relationships to subjective aversive/nonaversive judgements. (
  • This was accompanied in them by an excess content of erythrocytes in the blood, which had a changed shape to varying degrees. (
  • Sickness behavior is a physiological behavioral response principally induced and regulated by proinflammatory cytokines, including interleukin 1β (IL-1β), IL-6 and tumor necrosis factor (TNF)α, which act centrally to induce sickness behaviors, including pyrexia. (
  • Long-term catheter implant studies suggest that the C18 alkylation is more effective than most, if not all, currently available treatments for the retention of a clean, biocompatible, blood-contacting surface. (
  • In light of a recently completed, comprehensive study, conducted by the National Institute for Occupational Safety and Health (NIOSH), the Institute concludes that vibrating hand tools can cause vibration syndrome, a condition also known as vibration white finger and as Raynaud's phenomenon of occupational origin. (
  • We have observed AA-like symptoms in our IFN-γ AU-rich element (ARE) - deleted (del) mice which constitutively express low level of IFN-γ under physiological condition. (
  • Cases tend to be underreported by physicians because most have not been informed of how to distinguish the symptoms of Raynaud's phenomenon from other medical conditions where blanching or sensory loss occurs. (
  • Primary" Raynaud's phenomenon, originally described by Dr. Maurice Raynaud, occurs spontaneously in less than 15% of the general population. (
  • The model derived illustrates physiological phenomena inaccessible in former models, and with great clinical application potential, such as vasodilatation and coronary diseases.The integration of a porous compartment to represent the perfused myocardium within 3D models is more challenging. (
  • The examined 24-month-old rats showed standard aging phenomena. (
  • In the blood of two-year-old rats, there was a decrease in the level of erythrocyte-discocytes. (
  • In rats of the older group, erythrocyte aggregation was increased, as indicated by an increase in the numberof erythrocytes that entered the aggregates in the blood and an increase in the number of most erythrocyte aggregates with a decrease in the level of free erythrocytes. (
  • These results are fully coherent with the physiological observation and raises the question: how the control of ventilation could select for the optimal configuration? (
  • This page refers to a blood lead level of 5 micrograms per deciliter (μg/dL) as the CDC's blood lead reference value. (
  • This new level is based on the U.S. population of children ages 1-5 years who represent the top 2.5% of children with the highest blood lead levels. (
  • Specify that there is no identified threshold or safe level of lead in blood. (
  • There is no identified threshold or safe level of lead in blood" [AAP 2016]. (
  • As of October 28, 2021, CDC uses a blood lead reference value of 3.5 micrograms per deciliter to identify children with blood lead levels that are higher than most children's levels. (
  • Grace shares that there isn't any conclusive research about why coregasms happen, though research from 2021 found that 9% of surveyed participants admitted to experiencing this phenomenon. (
  • Nous inspirant des schémas en temps de type splitting établis en interaction fluide-structure pour modéliser les vaisseaux sanguins, nous proposons une discrétisation semi-implicite d'une formulation générale de poromécanique, satisfaisant un bilan d'énergie au niveau discret. (
  • In this study, the researchers optimized this technique so that they could detect light absorbed by hemoglobin-this way, the resulting ultrasound waves would give information about glassfrogs' red blood cell movement. (
  • Red blood cell distribution in the glassfrog. (