Methaqualone
Resins, Plant
Barbiturates
Diphenhydramine
Chromatography, Gas
Drug Eruptions
Pseudolymphoma
Acute Generalized Exanthematous Pustulosis
Exanthema
Trimethoprim-Sulfamethoxazole Combination
Skin Diseases, Vesiculobullous
Skin Diseases
Drug and Narcotic Control
United States Department of Agriculture
North Carolina
Research Subjects
Methyltestosterone
Inhibition of translocation of nascent apolipoprotein B across the endoplasmic reticulum membrane is associated with selective inhibition of the synthesis of apolipoprotein B. (1/28)
In HepG2 cells, inhibition of apolipoprotein B100 (apoB) translocation across the endoplasmic reticulum by an microsomal triglyceride transfer protein (MTP) inhibitor (CP-10447) in the presence of N-acetyl-leucinyl-norleucinal, a proteasomal inhibitor, results in accumulation of newly synthesized apoB in the translocation channel. Here we demonstrated that such accumulation led to a specific reduction of apoB synthesis. ApoB mRNA levels remained unchanged, but we observed reduced rates of elongation of nascent apoB in puromycin-synchronized cells pretreated with MTP inhibitor. This observation was consistent with a longer half-ribosome transit time for the synthesis of apoB in MTP-inhibited cells. Initiation of translation of apoB mRNA was not impaired by MTP inhibition. Overall, these findings suggest that translocation arrest of apoB in the endoplasmic reticulum channel can exert a selective and negative effect on the synthesis of apoB at the stage of elongation. (+info)Thin-layer chromatographic detection and identification of methaqualone metabolites in urine. (2/28)
A procedure for detecting methaqualone and identifying methaqualone metabolites in urine by thin-layer chromatography is described and evaluated. Urine is hydrolyzed with HCl or NaIO4, adjusted to pH 9.5, and extracted with chloroform. The chloroform extract is evaporated, reconstituted in methanol, applied to fluorescent silica-gel plates, and developed with ethyl acetate:methanol:ammonium hydroxide (28%) (85:10:5 by vol). Methaqualone use is detected by a pattern of four metabolites, which can be seen under ultraviolet light or are made visible by acidified iodoplatinate reagent. Synthetic methaqualone metabolites are used for identification and to compensate for procedural variables. More than 250 positive urine specimens were correctly identified by this method. Hydrolyzed natural and synthetic metabolites were identical by several criteria. (+info)The late addition of core lipids to nascent apolipoprotein B100, resulting in the assembly and secretion of triglyceride-rich lipoproteins, is independent of both microsomal triglyceride transfer protein activity and new triglyceride synthesis. (3/28)
Although microsomal triglyceride transfer protein (MTP) and newly synthesized triglyceride (TG) are critical for co-translational targeting of apolipoprotein B (apoB100) to lipoprotein assembly in hepatoma cell lines, their roles in the later stages of lipoprotein assembly remain unclear. Using N-acetyl-Leu-Leu-norleucinal to prevent proteasomal degradation, HepG2 cells were radiolabeled and chased for 0-90 min (chase I). The medium was changed and cells chased for another 150 min (chase II) in the absence (control) or presence of Pfizer MTP inhibitor CP-10447 (CP). As chase I was extended, inhibition of apoB100 secretion by CP during chase II decreased from 75.9% to only 15% of control (no CP during chase II). Additional studies were conducted in which chase I was either 0 or 90 min, and chase II was in the presence of [(3)H]glycerol and either BSA (control), CP (inhibits both MTP activity and TG synthesis),BMS-1976360-1) (BMS) (inhibits only MTP activity), or triacsin C (TC) (inhibits only TG synthesis). When chase I was 0 min, CP, BMS, and TC reduced apoB100 secretion during chase II by 75.3, 73.9, and 53.9%. However, when chase I was 90 min, those agents reduced apoB100 secretion during chase II by only 16.0, 19.2, and 13.9%. Of note, all three inhibited secretion of newly synthesized TG during chase II by 80, 80, and 40%, whether chase I was 0 or 90 min. In both HepG2 cells and McA-RH7777 cells, if chase I was at least 60 min, inhibition of TG synthesis and/or MTP activity did not affect the density of secreted apoB100-lipoproteins under basal conditions. Oleic acid increased secretion of TG-enriched apoB100-lipoproteins similarly in the absence or presence of either of CP, BMS, or TC. We conclude that neither MTP nor newly synthesized TG is necessary for the later stages of apoB100-lipoprotein assembly and secretion in either HepG2 or McA-RH7777 cells. (+info)Radioimmunoassay of methaqualone and its monohydroxy metabolites in urine. (4/28)
A commercial radioimmunoassay kit was evaluated for efficacy in detecting methaqualone or its metabolites in urine of persons receiving this drug. The drug and its unconjugated 3'- and 4'-monohydroxy metabolites could be detected equally well. The unconjugated alpha-monohydroxy metabolite was about 80% as reactive and the unconjugated 6-monohydroxy metabolite reacted only very weakly. Quantitation of the conjugated metabolites was less sensitive than of unconjugated. Nineteen urine specimens which reacted positively to radioimmunoassay and which thin-layer chromatography had shown to contain methaqualone and its metabolites were also examined by gas-liquid chromatography. Those specimens that reacted strongly to radioimmunoassay contained high concentrations of the drug or its metabolites. In the specimens examined by gas-liquid chromatography, the apparent concentrations of the metabolites were generally higher than those of the drug itself. Methaqualone in combination with its unconjugated metabolites reacted additively with the radioimmunoassay, resembling the same concentration of parent drug alone. Detection limits were between 10-200 mug/liter. (+info)Cannabis and other drug use among trauma patients in three South African cities, 1999-2001. (5/28)
OBJECTIVE: To assess the extent of cannabis and other drug use among patients presenting with recent injuries at trauma units in Cape Town, Port Elizabeth and Durban from 1999 to 2001. DESIGN: Cross-sectional surveys were conducted during a 4-week period at each of the above sites in 1999, 2000 and 2001. The concept of an idealised week was used to render representative samples. OUTCOME MEASURES: Cause of injury and biological markers to assess use of cannabis, methaqualone (Mandrax), opiates, cocaine, amphetamine, and methamphetamine. RESULTS: Over half of all patients tested experienced violent injuries. Excluding opiates, across sites and over time between 33% and 62% of patients tested positive for at least one drug (N = 1565). In most cases the drugs were cannabis and/or methaqualone. While no inter-city differences were found, male patients were typically more likely to test positive for drugs in general and specific drugs such as cannabis and the cannabis/methaqualone ('white pipe') combination than female patients. Drug positivity was higher in 2001 than in the previous 2 years in Cape Town, and patients injured as a result of violence in Cape Town and Durban were more likely to test positive for drugs than patients with certain other types of injuries. CONCLUSIONS: Drug use among trauma patients has remained consistently high for each of the 3 study periods. Efforts to combat the abuse of drugs such as cannabis and methaqualone would appear to be paramount in reducing the burden of injuries on health care services. The study has raised numerous issues requiring further research. (+info)Cross-physical dependence of several drugs in methaqualone-dependent rats. (6/28)
We investigated the characteristics of physical dependence on methaqualone. Rats were made physically dependent on methaqualone by the use of the drug-admixed food (DAF) method for 33 days. Pentobarbital, barbital, ethanol and diazepam were cross-administered against methaqualone to evaluate the degree of suppression of methaqualone withdrawal signs as an index for the cross-physical dependence liability of these drugs to methaqualone. To evaluate the cross-physical dependence liability, we used AUC of body weight loss and withdrawal scores between the first cross-administration (9 hr after the withdrawal) and 27 hr after the withdrawal. AUC of weight loss was significantly suppressed by the four test drugs as compared to each control. Withdrawal scores were also significantly inhibited by the cross-administration of barbital, ethanol and diazepam. Considering that the rats given barbital or ethanol fell asleep after the cross-administration, diazepam seems to cause the strongest suppression of methaqualone withdrawal signs among the four test drugs. Thus, physical dependence on methaqualone may be similar by nature to that on benzodiazepines rather than barbiturates and alcohol. (+info)Gas-liquid chromatography of undervatized drugs after chromatographic extraction from blood. (7/28)
We have developed an integrated method that overcomes the two main procedural difficulties of gas-liquid chromatography, namely, solvent-solvent extraction and chemical derivatization. Drugs are extracted from serum by column chromatography on granular diatomaceous earth (kieselguhr). Subsequent gas-liquid chromatography of underivatized samples can be performed on either of two liquid phases. A mixed liquid phase, used for quantitative gas-chromatographic assay on patients with a known therapeutic regimen, has enabled quantitation of 12 drugs in serum. Alternatively, a single liquid phase, used with the mixed liquid phase, permits the gas-chromatographic identification of unknown drugs on the basis of the characteristic pattern of the two relative retention times; by this approach more than 40 drugs have been identified in cases of suspected intoxication, both in serum and in gastric aspirate. Besides providing ease of performance and wide applicability, the proposed procedure offers a degree of precision and accuracy that compares favorably with established methods. (+info)A comparison of sleep patterns in natural and mandrax- and tuinal-induced sleep. (8/28)
A within-subject comparison of the effects on the overnight sleep EEG of 1 tablet of Mandrax (containing methaqualone base 250 mg. and diphenhydramine hydrochloride 25 mg.) and 200 mg. Tuinal (equal parts of quinalbarbitone sodium and amylobarbitone sodium) in 14 normal subjects is reported.Mandrax-induced sleep was not significantly different from natural sleep in the duration of light, moderate, deep and REM phases. Tuinal produced a significant reduction in REM sleep (P < 0.01) compared with natural sleep and with Mandrax-induced sleep. (+info)Methaqualone is a sedative-hypnotic medication that was commonly used in the past for the treatment of insomnia and as a muscle relaxant. It has a chemical structure similar to that of barbiturates, but it produces somewhat different effects. Methaqualone gained popularity as a recreational drug during the 1960s and 1970s under the brand name Quaalude or "ludes" in the United States and Mandrax in the UK.
Methaqualone works by depressing the central nervous system, leading to sedative, hypnotic, and muscle relaxant effects. It can cause relaxation, drowsiness, reduced anxiety, and impaired coordination. At higher doses, it may produce a state of euphoria, altered perceptions, and dissociation from one's surroundings.
Due to its potential for addiction, abuse, and severe side effects, including death from overdose, methaqualone was made illegal in many countries during the 1980s. It is no longer used medically in most parts of the world.
In a medical context, "resins, plant" refer to the sticky, often aromatic substances produced by certain plants. These resins are typically composed of a mixture of volatile oils, terpenes, and rosin acids. They may be present in various parts of the plant, including leaves, stems, and roots, and are often found in specialized structures such as glands or ducts.
Plant resins have been used for centuries in traditional medicine and other applications. Some resins have antimicrobial, anti-inflammatory, or analgesic properties and have been used to treat a variety of ailments, including skin conditions, respiratory infections, and pain.
Examples of plant resins with medicinal uses include:
* Frankincense (Boswellia spp.) resin has been used in traditional medicine to treat inflammation, arthritis, and asthma.
* Myrrh (Commiphora spp.) resin has been used as an antiseptic, astringent, and anti-inflammatory agent.
* Pine resin has been used topically for its antimicrobial and anti-inflammatory properties.
It's important to note that while some plant resins have demonstrated medicinal benefits, they should be used with caution and under the guidance of a healthcare professional. Some resins can have adverse effects or interact with medications, and it's essential to ensure their safe and effective use.
Barbiturates are a class of drugs that act as central nervous system depressants, which means they slow down the activity of the brain and nerves. They were commonly used in the past to treat conditions such as anxiety, insomnia, and seizures, but their use has declined due to the risk of addiction, abuse, and serious side effects. Barbiturates can also be used for surgical anesthesia and as a treatment for barbiturate or pentobarbital overdose.
Barbiturates work by enhancing the activity of the neurotransmitter gamma-aminobutyric acid (GABA) in the brain, which results in sedation, hypnosis, and anticonvulsant effects. However, at higher doses, barbiturates can cause respiratory depression, coma, and even death.
Some examples of barbiturates include pentobarbital, phenobarbital, secobarbital, and amobarbital. These drugs are usually available in the form of tablets, capsules, or injectable solutions. It is important to note that barbiturates should only be used under the supervision of a healthcare professional, as they carry a high risk of dependence and abuse.
Diphenhydramine is an antihistamine medication used to relieve symptoms of allergies, such as sneezing, runny nose, and itchy or watery eyes. It works by blocking the action of histamine, a substance in the body that causes allergic reactions. Diphenhydramine can also be used to treat motion sickness, insomnia, and symptoms of the common cold.
In addition to its antihistamine effects, diphenhydramine also has anticholinergic properties, which means it can help to reduce secretions in the nose and throat, and may have a drying effect on the mouth and eyes. It is available over-the-counter in various forms, including tablets, capsules, liquid, and topical creams or ointments.
It's important to note that diphenhydramine can cause drowsiness, so it should be used with caution when operating heavy machinery or driving a vehicle. It may also interact with other medications, so it's important to speak with a healthcare provider before taking this medication.
Chromatography, gas (GC) is a type of chromatographic technique used to separate, identify, and analyze volatile compounds or vapors. In this method, the sample mixture is vaporized and carried through a column packed with a stationary phase by an inert gas (carrier gas). The components of the mixture get separated based on their partitioning between the mobile and stationary phases due to differences in their adsorption/desorption rates or solubility.
The separated components elute at different times, depending on their interaction with the stationary phase, which can be detected and quantified by various detection systems like flame ionization detector (FID), thermal conductivity detector (TCD), electron capture detector (ECD), or mass spectrometer (MS). Gas chromatography is widely used in fields such as chemistry, biochemistry, environmental science, forensics, and food analysis.
A "drug eruption" is a general term used to describe an adverse skin reaction that occurs as a result of taking a medication. These reactions can vary in severity and appearance, and may include symptoms such as rash, hives, itching, redness, blistering, or peeling of the skin. In some cases, drug eruptions can also cause systemic symptoms such as fever, fatigue, or joint pain.
The exact mechanism by which drugs cause eruptions is not fully understood, but it is thought to involve an abnormal immune response to the medication. There are many different types of drug eruptions, including morphilliform rashes, urticaria (hives), fixed drug eruptions, and Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN), which is a severe and potentially life-threatening reaction.
If you suspect that you are experiencing a drug eruption, it is important to seek medical attention promptly. Your healthcare provider can help determine the cause of the reaction and recommend appropriate treatment. In some cases, it may be necessary to discontinue the medication causing the reaction and switch to an alternative therapy.
Pseudolymphoma is a term used to describe a benign reactive lymphoid hyperplasia that mimics the clinical and histopathological features of malignant lymphomas. It is also known as pseudolymphomatous cutis or reactive lymphoid hyperplasia.
Pseudolymphoma can occur in various organs, but it is most commonly found in the skin. It is usually caused by a localized immune response to an antigenic stimulus such as insect bites, tattoos, radiation therapy, or certain medications. The condition presents as a solitary or multiple nodular lesions that may resemble lymphoma both clinically and histologically.
Histologically, pseudolymphoma is characterized by a dense infiltrate of lymphocytes, plasma cells, and other immune cells, which can mimic the appearance of malignant lymphoma. However, unlike malignant lymphomas, pseudolymphomas lack cytological atypia, mitotic activity, and clonal proliferation of lymphoid cells.
Pseudolymphoma is usually a self-limiting condition that resolves spontaneously or with the removal of the antigenic stimulus. However, in some cases, it may persist or recur, requiring further evaluation and treatment to exclude malignant lymphoma.
Acute Generalized Exanthematous Pustulosis (AGEP) is a severe cutaneous adverse reaction that typically occurs within 48 hours after the initiation of medication. It is characterized by the rapid development of widespread sterile pustules on an erythematous and edematous base, often accompanied by systemic symptoms such as fever and neutrophilia.
The most common triggers for AGEP are antibiotics (such as beta-lactams, macrolides, and fluoroquinolones), antifungals, and calcium channel blockers. The diagnosis of AGEP is based on clinical presentation, histopathological findings, and the exclusion of other causes of pustular eruptions.
The management of AGEP includes immediate discontinuation of the offending medication, supportive care, and sometimes systemic corticosteroids. The prognosis is generally good with most patients recovering within 2 weeks, although recurrences may occur upon re-exposure to the causative agent.
An exanthem is a skin eruption or rash that often occurs as a symptom of various diseases, such as infectious illnesses. It can appear in different forms, including maculopapular (consisting of both macules and papules), vesicular (small fluid-filled blisters), petechial (small purple or red spots caused by bleeding under the skin), or erythematous (reddened). The rash can be localized to certain areas of the body or generalized, covering large parts or the entire body. Exanthems are usually accompanied by other symptoms related to the underlying disease, such as fever, cough, or muscle aches.
Trimethoprim-sulfamethoxazole combination is an antibiotic medication used to treat various bacterial infections. It contains two active ingredients: trimethoprim and sulfamethoxazole, which work together to inhibit the growth of bacteria by interfering with their ability to synthesize folic acid, a vital component for their survival.
Trimethoprim is a bacteriostatic agent that inhibits dihydrofolate reductase, an enzyme needed for bacterial growth, while sulfamethoxazole is a bacteriostatic sulfonamide that inhibits the synthesis of tetrahydrofolate by blocking the action of the enzyme bacterial dihydropteroate synthase. The combination of these two agents produces a synergistic effect, increasing the overall antibacterial activity of the medication.
Trimethoprim-sulfamethoxazole is commonly used to treat urinary tract infections, middle ear infections, bronchitis, traveler's diarrhea, and pneumocystis pneumonia (PCP), a severe lung infection that can occur in people with weakened immune systems. It is also used as a prophylactic treatment to prevent PCP in individuals with HIV/AIDS or other conditions that compromise the immune system.
As with any medication, trimethoprim-sulfamethoxazole combination can have side effects and potential risks, including allergic reactions, skin rashes, gastrointestinal symptoms, and blood disorders. It is essential to follow the prescribing physician's instructions carefully and report any adverse reactions promptly.
Vesiculobullous skin diseases are a group of disorders characterized by the formation of blisters (vesicles) and bullae (larger blisters) on the skin. These blisters form when there is a separation between the epidermis (outer layer of the skin) and the dermis (layer beneath the epidermis) due to damage in the area where they join, known as the dermo-epidermal junction.
There are several types of vesiculobullous diseases, each with its own specific causes and symptoms. Some of the most common types include:
1. Pemphigus vulgaris: an autoimmune disorder where the immune system mistakenly attacks proteins that help to hold the skin together, causing blisters to form.
2. Bullous pemphigoid: another autoimmune disorder, but in this case, the immune system attacks a different set of proteins, leading to large blisters and inflammation.
3. Dermatitis herpetiformis: a skin condition associated with celiac disease, where gluten ingestion triggers an immune response that leads to the formation of itchy blisters.
4. Pemphigoid gestationis: a rare autoimmune disorder that occurs during pregnancy and causes blisters on the abdomen and other parts of the body.
5. Epidermolysis bullosa: a group of inherited disorders where there is a fragile skin structure, leading to blistering and wound formation after minor trauma or friction.
Treatment for vesiculobullous diseases depends on the specific diagnosis and may include topical or systemic medications, such as corticosteroids, immunosuppressants, or antibiotics, as well as wound care and prevention of infection.
Skin diseases, also known as dermatological conditions, refer to any medical condition that affects the skin, which is the largest organ of the human body. These diseases can affect the skin's function, appearance, or overall health. They can be caused by various factors, including genetics, infections, allergies, environmental factors, and aging.
Skin diseases can present in many different forms, such as rashes, blisters, sores, discolorations, growths, or changes in texture. Some common examples of skin diseases include acne, eczema, psoriasis, dermatitis, fungal infections, viral infections, bacterial infections, and skin cancer.
The symptoms and severity of skin diseases can vary widely depending on the specific condition and individual factors. Some skin diseases are mild and can be treated with over-the-counter medications or topical creams, while others may require more intensive treatments such as prescription medications, light therapy, or even surgery.
It is important to seek medical attention if you experience any unusual or persistent changes in your skin, as some skin diseases can be serious or indicative of other underlying health conditions. A dermatologist is a medical doctor who specializes in the diagnosis and treatment of skin diseases.
"Drug and narcotic control" refers to the regulation and oversight of drugs and narcotics, including their production, distribution, and use. This is typically carried out by governmental agencies in order to ensure public safety, prevent abuse and diversion, and protect the health of individuals. The goal of drug and narcotic control is to strike a balance between making sure that medications are available for legitimate medical purposes while also preventing their misuse and illegal sale.
Drug control policies may include measures such as licensing and registration of manufacturers, distributors, and pharmacies; tracking and monitoring of controlled substances; setting standards for prescription practices; and enforcement of laws and regulations related to drug use and trafficking. Narcotic control specifically refers to the regulation of drugs that have a high potential for abuse and are subject to international treaties, such as opioids.
It's important to note that while these regulations aim to protect public health and safety, they can also be controversial and have unintended consequences, such as contributing to drug shortages or creating barriers to access for people who need controlled substances for legitimate medical reasons.
The United States Department of Agriculture (USDA) is not a medical organization or entity, so it does not provide medical definitions. However, I can give you some information about what the USDA is and what it does.
The USDA is a federal executive department of the U.S. government responsible for developing and executing federal laws related to farming, forestry, and food. It was established in 1862 by President Abraham Lincoln and is headed by the Secretary of Agriculture, who is a member of the President's cabinet.
The USDA has several key missions, including:
* Promoting agricultural trade and production
* Ensuring the safety of the food supply
* Providing nutrition assistance to vulnerable populations
* Protecting natural resources and the environment
* Promoting rural development and economic stability
In terms of food and nutrition, the USDA plays an important role in setting dietary guidelines for Americans, establishing standards for school meals and other federal food programs, and regulating the safety of meat, poultry, and egg products. The agency also conducts research on agricultural and food-related topics and provides education and outreach to farmers, ranchers, and consumers.
I'm sorry for any confusion, but "North Carolina" is a geographical location and not a medical term or condition. It is a state located in the southeastern region of the United States. If you have any questions about medical terms or conditions, I'd be happy to help with those!
A research subject, also commonly referred to as a "human subject" or "participant," is an individual who takes part in a research study or clinical trial. Research subjects are essential for the advancement of medical and scientific knowledge, as they provide data that can help researchers understand various phenomena, develop new treatments, and improve existing ones.
The term "research subject" emphasizes the ethical considerations involved in conducting research with human participants. It highlights the importance of protecting their rights, dignity, and well-being throughout the study. Researchers must obtain informed consent from subjects before enrolling them in a study, ensuring that they understand the purpose, procedures, potential risks, and benefits associated with the research.
Additionally, researchers are required to follow strict guidelines and regulations to minimize any harm or discomfort to the research subjects during the study. These guidelines may include requirements for data confidentiality, privacy protection, and monitoring of adverse events. Overall, treating research subjects with respect and care is crucial in maintaining the integrity of medical research and ensuring its societal benefits.
'Drug legislation' refers to the laws and regulations that govern the production, distribution, sale, possession, and use of medications and pharmaceutical products within a given jurisdiction. These laws are designed to protect public health and safety by establishing standards for drug quality, ensuring appropriate prescribing and dispensing practices, preventing drug abuse and diversion, and promoting access to necessary medications. Drug legislation may also include provisions related to clinical trials, advertising, packaging, labeling, and reimbursement. Compliance with these regulations is typically enforced through a combination of government agencies, professional organizations, and legal penalties for non-compliance.
Methyltestosterone is a synthetic form of the hormone testosterone, which is primarily used in the treatment of low testosterone levels (hypogonadism) in men. It has a methyl group attached to it, which allows it to be taken orally and still have significant effects on the body.
Testosterone is an androgen hormone that plays important roles in the development and maintenance of male sex characteristics, such as deepening of the voice, growth of facial and body hair, and increased muscle mass. It also helps maintain bone density, red blood cell production, and sex drive.
Methyltestosterone is available in various forms, including tablets and capsules, and its use should be under the supervision of a healthcare professional due to potential side effects and risks associated with its use, such as liver toxicity, increased risk of cardiovascular events, and changes in cholesterol levels.
It's important to note that methyltestosterone is not approved for use in women, as it can cause virilization (development of male sex characteristics) and other side effects.
I'm sorry for any confusion, but the 'United States Department of Homeland Security' (DHS) is not a medical term or concept. It's a cabinet department of the U.S. federal government, created in response to the September 11 attacks, with the primary responsibilities of protecting the United States from terrorism and managing border control. The DHS includes several components, including the U.S. Coast Guard, Transportation Security Administration (TSA), Federal Emergency Management Agency (FEMA), Customs and Border Protection (CBP), and Immigration and Customs Enforcement (ICE), among others.
If you have any medical questions or terms you would like defined, I'd be happy to help!
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