Reproduction, Asexual
Basic Reproduction Number
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Reproductive Techniques
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Sex
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Spermatozoa
Population Dynamics
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Sperm Injections, Intracytoplasmic
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Embryo Transfer
Gametogenesis
Infertility, Male
Ants
Wolbachia
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Nesting Behavior
Selection, Genetic
Wasps
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Spermatogenesis
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Ecosystem
Environment
Pollen Tube
Oocytes
Seeds
Sex Characteristics
Luteinizing Hormone
Lactation
Vitellogenins
Species Specificity
Ovulation Induction
Crosses, Genetic
Estrous Cycle
Tephritidae
Feeding Behavior
Molecular Sequence Data
Dental Impression Technique
Diploidy
Herpestidae
Body Weight
Pregnancy Outcome
Hypothalamus
Pheromones
Host-Parasite Interactions
Symbiosis
Pregnancy, Animal
Larva
Endocrine Disruptors
Plant Physiological Phenomena
Estradiol
Genitalia, Male
Dental Impression Materials
Meiosis
Adaptation, Physiological
Genetic Fitness
Molting
Mammals
Genetics, Population
Follicle Stimulating Hormone
Juvenile Hormones
Reproductive Physiological Phenomena
Galanin-Like Peptide
Disease Transmission, Infectious
Semen
Gametogenesis, Plant
Anseriformes
Charadriiformes
Cichlids
Uterus
Progesterone
Mating Preference, Animal
Introduced Species
Oocyte Donation
Evolution, Molecular
Zygote Intrafallopian Transfer
Gonadotropins
Sperm Motility
Models, Genetic
Dominance-Subordination
Phenotype
Testosterone
Hermaphroditic Organisms
Abortion, Spontaneous
Insemination, Artificial
Population Growth
Genitalia, Female
Oogenesis
Arvicolinae
Animal Husbandry
Geography
Songbirds
Microsatellite Repeats
Sex Attractants
Estrus
Cattle
Bees
Fishes
Animals, Wild
Ovarian Follicle
Peromyscus
Angiosperms
Phodopus
Hybridization, Genetic
Caenorhabditis elegans
Sheep
Passeriformes
Aging
Genotype
Competitive Behavior
Gryllidae
Ceratitis capitata
Mutation
Reproductive Isolation
Bioethics
Gamete Intrafallopian Transfer
Isopoda
Plant Infertility
Models, Theoretical
Energy Metabolism
Adaptation, Biological
Triploidy
Preimplantation Diagnosis
Amphibians
Polyploidy
Analysis of Variance
Animal Structures
Endangered Species
Reproductive Medicine
Polygonaceae
Amplified Fragment Length Polymorphism Analysis
Disease Outbreaks
Amino Acid Sequence
Prolactin replacement fails to inhibit reactivation of gonadotropin secretion in rams treated with melatonin under long days. (1/7797)
This study tested the hypothesis that prolactin (PRL) inhibits gonadotropin secretion in rams maintained under long days and that treatment with melatonin (s.c. continuous-release implant; MEL-IMP) reactivates the reproductive axis by suppressing PRL secretion. Adult Soay rams were maintained under long days (16L:8D) and received 1) no further treatment (control, C); 2) MEL-IMP for 16 wk and injections of saline/vehicle for the first 8 wk (M); 3) MEL-IMP for 16 wk and exogenous PRL (s.c. 5 mg ovine PRL 3x daily) for the first 8 wk (M+P). The treatment with melatonin induced a rapid increase in the blood concentrations of FSH and testosterone, rapid growth of the testes, an increase in the frequency of LH pulses, and a decrease in the LH response to N-methyl-D,L-aspartic acid. The concomitant treatment with exogenous PRL had no effect on these reproductive responses but caused a significant delay in the timing of the sexual skin color and growth of the winter pelage. These results do not support the hypothesis and suggest that PRL at physiological long-day concentrations, while being totally ineffective as an inhibitor of gonadotropin secretion, acts in the peripheral tissues and skin to maintain summer characteristics. (+info)Glucocorticoid receptor immunoreactivity in neurons and pituitary cells implicated in reproductive functions in rainbow trout: a double immunohistochemical study. (2/7797)
In order to identify the nature of the glucocorticoid receptor (GR)-expressing neurons and pituitary cells that potentially mediate the negative effects of stress on reproductive performance, double immunohistochemical stainings were performed in the brain and pituitary of the rainbow trout (Oncorhynchus mykiss). To avoid possible cross-reactions during the double staining studies, combinations of primary antibodies raised in different species were used, and we report here the generation of an antibody raised in guinea pig against the rainbow trout glucocorticoid receptor (rtGR). The results obtained in vitellogenic females showed that GnRH-positive neurons in the caudal telencephalon/anterior preoptic region consistently exhibited rtGR immunoreactivity. Similarly, in the anterior ventral preoptic region, a group of tyrosine hydroxylase-positive neurons, known for inhibiting gonadotropin (GTH)-2 secretion during vitellogenesis, was consistently shown to strongly express GR. Finally, we show that a large majority of the GTH-1 (FSH-like) and GTH-2 (LH-like) cells of the pituitary exhibit rtGR immunoreactivity. These results indicate that cortisol may affect the neuroendocrine control of the reproductive process of the rainbow trout at multiple sites. (+info)Precocious estrus and reproductive ability induced by PG 600 in prepuberal gilts. (3/7797)
A total of 29 SPF Large White prepuberal gilts (mean age 152 days at treatment) were examined for estrous and ovulatory responses after PG 600 treatment. After treatment, 85.2% of the gilts showed standing estrus within 6 days. Whereas the treatment-to-estrus interval and duration were 3.7 and 1.9 days respectively. As ovulation occurred on Day 5 to 6, appropriate timing of artificial insemination would be about 4 days after treatment. Fertility of gilts revealed to be excellent, giving rise to a high percentage of normal embryos, 85.3%. Meanwhile, development and growth of fetuses were mostly normal. Other reproductive performances recorded were: mean litter size 6.8; mean birth weight 1.26 kg; weaning-to-return estrus interval 5 to 8 days. In conclusion, PG 600 was found to be useful in inducing fertile estrus in prepuberal gilts, a result which will be of interest for commercial pig farms. (+info)Utero-ovarian interaction in the regulation of reproductive function. (4/7797)
The physiological regulation of fertile reproductive cycle in mammals depends on interactions between hypothalamus-pituitary, ovarian and uterine stimuli. Over the past 20 years, much has been learned about the interrelation between the affluent and effluent lymph and vascular drainage in and around both ovarian and uterine tissues. An essential feature in the regulation of the fertile cycle is the functional status of the ovary, particularly the corpus luteum. During the time of implantation and the early pregnancy, an active corpus luteum is essential. As human chorionic gonadotrophin (HCG) is important in the maintenance of the corpus luteum, we investigated if it was produced by the cyclic endometrium. Immunohistochemical and in-situ hybridization reactions were performed but neither identified the presence of HCG during the proliferative phase. Positive staining and beta-human chorionic gonadotrophin (beta-HCG) mRNA were observed during the secretory phase in the glandular cells of the endometrium. The results were confirmed by Western blotting of secretory phase endometrium extracts and assessment of the functional secretory capacity of primary endometrial cultures. Polymerase chain reaction (PCR) investigations showed a positive result in the secretory phase. We postulate that, based on the very close morphological interrelation between the uterus and the ovary, the beta-HCG of the endometrium is the primary factor for the maintenance of the corpus luteum and early pregnancy. (+info)The effects of a t-allele (tAE5) in the mouse on the lymphoid system and reproduction. (5/7797)
Mice homozygous for tAE5, a recessive allele at the complex T-locus, are characterized by their unique short-tailed phenotype as well as by runting and low fertility. Histological and histochemical studies of the lymphoid and reproductive systems disclosed structural changes in the mutant spleen resembling those found in autoimmune conditions. Involution of the mutant thymus was greatly accelerated compared to normal. Necrotic changes occurred during spermiogenesis whereas ovarian structure was normal in mutants. The possible mechanisms of the mutant effects are discussed in the framework of other similar syndromes and the mode of action of alleles at the complex T-locus. (+info)Ultrastructure of meiosis-inducing (heterotypic) and non-inducing (homotypic) cell unions in conjugation of Blepharisma. (6/7797)
Cells of mating types I and II of Blepharisma japonicum interact with each other and unite in heterotypic (type I-type II) or homotypic (type I-type I, type II-type II) pairs. Heterotypic pairs undergo meiosis and other nuclear changes of conjugation, while homotypic pairs remain united for days without the nuclear changes taking place. We compared cell unions of these two kinds of pairs at the ultrastructural level. In the homotypic union, cell membranes are closely juxtaposed, separated by a distance of about 20 nm. This arrangement is interrupted in some places by vacuoles and small cytoplasmic bridges. Saccule-like structures tend to be more abundant near the united surfaces. Microtubules running at right or slightly obtuse angles with the cell surface (PACM microtubules) are characteristically present at the united region of cells. These structures are very similar to those observed in earlier stages of the heterotypic union. However, in homotypic pairs, cells unite only at the anterior half of the peristome, while in heterotypic pairs cells unite also at the posterior half of the peristome, where the cell membrane totally disappears in later stages. PACM microtubules persist for at least 18 h in homotypic unions, while they disappear within a few hours in heterotypic unions. These differences between the two kinds of cell union are discussed in relation to the initiation mechanism of meiosis and other nuclear changes of conjugation. Similarities between homotypic union and cell junctions in multicellular organisms are also discussed. (+info)Evaluation of life-cycle herd efficiency in cow-calf systems of beef production. (7/7797)
A deterministic beef efficiency model (BEM) was used to evaluate life-cycle herd efficiency (LCHE) in cow-calf beef production systems using four breed groups of beef cattle. The breed groups were Beef Synthetic #1 (SY1), Beef Synthetic #2 (SY2), Dairy Synthetic (DS), and purebred Hereford (HE). The LCHE was defined over the lifetime of the herd as the ratio of total output (lean meat equivalent) to total input (feed equivalent). Breed differences in LCHE were predicted with the larger/slower maturing DS being most efficient at each age of herd disposal and reproductive rate. This was mainly because, at any average age at culling, the dams of DS breed group were less mature and so had been carrying relatively lower maintenance loads for shorter periods and positively influencing LCHE. Higher LCHE was predicted with improvement in reproductive performance if there were no associated extra costs. However, this declined markedly if there was a delay in marketing of offspring. As average age at culling increased from 4 to 6 yr, efficiency declined sharply, but it began to recover beyond this age in most breed groups. We concluded that the slower maturing DS breed group may be more efficient on a herd basis in cow-calf systems and that improvements in reproductive rate not associated with extra costs improve life-cycle efficiency. Culling cows soon after their replacements are produced seems efficient. (+info)Gonadotropin-releasing hormone improves reproductive performance of dairy cows with slow involution of the reproductive tract. (8/7797)
Eighty multiparous Holstein cows were assigned randomly at calving to receive either 100 microg of GnRH or saline 13 or 14 d postpartum (PP). From 4 to 28 d PP the cows' reproductive organs were palpated weekly per rectum, and cows were subclassified within each group as undergoing slow (delayed) cervical and uterine involution (abnormal) or as normal cows. Last milk obtained after removing the milking machine was assayed for progesterone 3 times a week for 120 d PP. Fourteen of the 80 cows were removed from the experiment because of culling or various veterinary treatments of pathologic conditions that could confound analysis of the GnRH treatment effects. As expected, the treatment of normal cows with GnRH had no significant effects on the first estrus or the first estrous cycle PP, on services per conception, days open, or any other reproductive trait measured. However, in the abnormal group of cows receiving saline, first rebreeding after calving was delayed (81 vs. 67 d), fewer were pregnant by 105 d PP (23 vs. 64%), and number of days open was greater (121 vs. 87 d) compared with those receiving GnRH; all were significant (P<.05). Treated abnormal cows were equivalent to the control normal cows. Thus, GnRH given 13 to 14 d PP to cows characterized as undergoing slow involution of the reproductive system, but with no other clinical problems, seems to assist in promoting rapid normal reproductive function. Subsequent losses due to culling were greatly reduced. (+info)Infertility can be classified into two main categories:
1. Primary infertility: This type of infertility occurs when a couple has not been able to conceive a child after one year of regular sexual intercourse, and there is no known cause for the infertility.
2. Secondary infertility: This type of infertility occurs when a couple has been able to conceive at least once before but is now experiencing difficulty in conceiving again.
There are several factors that can contribute to infertility, including:
1. Age: Women's fertility declines with age, especially after the age of 35.
2. Hormonal imbalances: Imbalances of hormones such as progesterone, estrogen, and thyroid hormones can affect ovulation and fertility.
3. Polycystic ovary syndrome (PCOS): A common condition that affects ovulation and can cause infertility.
4. Endometriosis: A condition in which the tissue lining the uterus grows outside the uterus, causing inflammation and scarring that can lead to infertility.
5. Male factor infertility: Low sperm count, poor sperm quality, and blockages in the reproductive tract can all contribute to infertility.
6. Lifestyle factors: Smoking, excessive alcohol consumption, being overweight or underweight, and stress can all affect fertility.
7. Medical conditions: Certain medical conditions such as diabetes, hypertension, and thyroid disorders can affect fertility.
8. Uterine or cervical abnormalities: Abnormalities in the shape or structure of the uterus or cervix can make it difficult for a fertilized egg to implant in the uterus.
9. Previous surgeries: Surgeries such as hysterectomy, tubal ligation, and cesarean section can affect fertility.
10. Age: Both male and female age can impact fertility, with a decline in fertility beginning in the mid-30s and a significant decline after age 40.
It's important to note that many of these factors can be treated with medical interventions or lifestyle changes, so it's important to speak with a healthcare provider if you are experiencing difficulty getting pregnant.
Causes of Female Infertility
--------------------------
There are several potential causes of female infertility, including:
1. Hormonal imbalances: Disorders such as polycystic ovary syndrome (PCOS), thyroid dysfunction, and premature ovarian failure can affect hormone levels and ovulation.
2. Ovulatory disorders: Problems with ovulation, such as anovulation or oligoovulation, can make it difficult to conceive.
3. Tubal damage: Damage to the fallopian tubes due to pelvic inflammatory disease, ectopic pregnancy, or surgery can prevent the egg from traveling through the tube and being fertilized.
4. Endometriosis: This condition occurs when tissue similar to the lining of the uterus grows outside of the uterus, causing inflammation and scarring that can lead to infertility.
5. Fibroids: Noncancerous growths in the uterus can interfere with implantation of a fertilized egg or disrupt ovulation.
6. Pelvic adhesions: Scar tissue in the pelvis can cause fallopian tubes to become damaged or blocked, making it difficult for an egg to travel through the tube and be fertilized.
7. Uterine or cervical abnormalities: Abnormalities such as a bicornuate uterus or a narrow cervix can make it difficult for a fertilized egg to implant in the uterus.
8. Age: A woman's age can affect her fertility, as the quality and quantity of her eggs decline with age.
9. Lifestyle factors: Factors such as smoking, excessive alcohol consumption, and being overweight or underweight can affect fertility.
10. Stress: Chronic stress can disrupt hormone levels and ovulation, making it more difficult to conceive.
It's important to note that many of these factors can be treated with medical assistance, such as medication, surgery, or assisted reproductive technology (ART) like in vitro fertilization (IVF). If you are experiencing difficulty getting pregnant, it is recommended that you speak with a healthcare provider to determine the cause of your infertility and discuss potential treatment options.
Male infertility can be caused by a variety of factors, including:
1. Low sperm count or poor sperm quality: This is one of the most common causes of male infertility. Sperm count is typically considered low if less than 15 million sperm are present in a sample of semen. Additionally, sperm must be of good quality to fertilize an egg successfully.
2. Varicocele: This is a swelling of the veins in the scrotum that can affect sperm production and quality.
3. Erectile dysfunction: Difficulty achieving or maintaining an erection can make it difficult to conceive.
4. Premature ejaculation: This can make it difficult for the sperm to reach the egg during sexual intercourse.
5. Blockages or obstructions: Blockages in the reproductive tract, such as a blockage of the epididymis or vas deferens, can prevent sperm from leaving the body during ejaculation.
6. Retrograde ejaculation: This is a condition in which semen is released into the bladder instead of being expelled through the penis during ejaculation.
7. Hormonal imbalances: Imbalances in hormones such as testosterone and inhibin can affect sperm production and quality.
8. Medical conditions: Certain medical conditions, such as diabetes, hypogonadism, and hyperthyroidism, can affect fertility.
9. Lifestyle factors: Factors such as smoking, excessive alcohol consumption, and stress can all impact fertility.
10. Age: Male fertility declines with age, especially after the age of 40.
There are several treatment options for male infertility, including:
1. Medications to improve sperm count and quality
2. Surgery to repair blockages or obstructions in the reproductive tract
3. Artificial insemination (IUI) or in vitro fertilization (IVF) to increase the chances of conception
4. Donor sperm
5. Assisted reproductive technology (ART) such as ICSI (intracytoplasmic sperm injection)
6. Hormone therapy to improve fertility
7. Lifestyle changes such as quitting smoking and alcohol, losing weight, and reducing stress.
It's important to note that male infertility is a common condition and there are many treatment options available. If you're experiencing difficulty conceiving, it's important to speak with a healthcare provider to determine the cause of infertility and discuss potential treatment options.
Body weight is an important health indicator, as it can affect an individual's risk for certain medical conditions, such as obesity, diabetes, and cardiovascular disease. Maintaining a healthy body weight is essential for overall health and well-being, and there are many ways to do so, including a balanced diet, regular exercise, and other lifestyle changes.
There are several ways to measure body weight, including:
1. Scale: This is the most common method of measuring body weight, and it involves standing on a scale that displays the individual's weight in kg or lb.
2. Body fat calipers: These are used to measure body fat percentage by pinching the skin at specific points on the body.
3. Skinfold measurements: This method involves measuring the thickness of the skin folds at specific points on the body to estimate body fat percentage.
4. Bioelectrical impedance analysis (BIA): This is a non-invasive method that uses electrical impulses to measure body fat percentage.
5. Dual-energy X-ray absorptiometry (DXA): This is a more accurate method of measuring body composition, including bone density and body fat percentage.
It's important to note that body weight can fluctuate throughout the day due to factors such as water retention, so it's best to measure body weight at the same time each day for the most accurate results. Additionally, it's important to use a reliable scale or measuring tool to ensure accurate measurements.
Types of triploidy:
There are two main types of triploidy:
1. Trisomy 21: This type of triploidy occurs when there is an extra copy of chromosome 21, resulting in a total of three copies of that chromosome. Trisomy 21 is the most common type of triploidy and is associated with Down syndrome, a genetic disorder that can cause intellectual disability, developmental delays, and other health problems.
2. Triploidy with other chromosomal abnormalities: This type of triploidy occurs when there are extra copies of other chromosomes in addition to chromosome 21. This can result in a wide range of developmental delays, intellectual disability, and other health problems.
Causes of triploidy:
Triploidy can occur due to various factors, including:
1. Genetic mutation: Triploidy can occur when there is a genetic mutation during embryonic development that results in an extra set of chromosomes.
2. Fertilization errors: Errors during fertilization can result in the formation of an extra set of chromosomes, leading to triploidy.
3. Maternal age: Advanced maternal age has been linked to an increased risk of triploidy, as older eggs are more likely to have genetic mutations that can lead to extra sets of chromosomes.
4. Assisted reproductive technology (ART): Triploidy can occur in children conceived through ART techniques such as in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI).
Symptoms of triploidy:
The symptoms of triploidy can vary depending on the type and severity of the condition. Some common symptoms include:
1. Growth delays: Children with triploidy may experience slow growth and development, and may be shorter and lighter than their peers.
2. Intellectual disability: Triploidy can result in intellectual disability, which is characterized by below-average intelligence and difficulty with daily living skills.
3. Developmental delays: Children with triploidy may experience delays in reaching developmental milestones, such as sitting, standing, and walking.
4. Physical abnormalities: Triploidy can result in a range of physical abnormalities, including heart defects, craniofacial abnormalities, and limb abnormalities.
5. Health problems: Children with triploidy may experience a range of health problems, including respiratory infections, feeding difficulties, and gastrointestinal issues.
Diagnosis of triploidy:
Triploidy can be diagnosed through a variety of tests, including:
1. Chromosomal analysis: This involves examining the child's cells to determine if they have three copies of every chromosome.
2. Ultrasound: An ultrasound can be used to examine the baby's physical characteristics and identify any abnormalities.
3. Blood tests: Blood tests can be used to measure the levels of certain substances in the body, such as hormone levels, which can help confirm a diagnosis of triploidy.
4. Amniocentesis: This is a test that involves inserting a needle into the uterus to collect a sample of the amniotic fluid surrounding the fetus. The fluid can be analyzed for signs of triploidy.
Treatment and management of triploidy:
There is no cure for triploidy, and treatment is focused on managing the symptoms and preventing complications. Some common treatments include:
1. Medications: Children with triploidy may require medication to manage seizures, developmental delays, and other symptoms.
2. Physical therapy: Physical therapy can help children with triploidy develop gross motor skills and improve their mobility.
3. Speech therapy: Speech therapy can help children with triploidy improve their communication skills and address any language delays.
4. Occupational therapy: Occupational therapy can help children with triploidy develop fine motor skills and perform daily activities.
5. Surgery: In some cases, surgery may be necessary to correct physical abnormalities or release compressed nerves.
It's important to note that each child with triploidy is unique and may require a different treatment plan. Parents should work closely with their healthcare provider to determine the best course of treatment for their child.
In summary, triploidy is a rare chromosomal condition that can cause a range of physical and developmental delays. While there is no cure for triploidy, there are various treatments available to manage the symptoms and improve quality of life. It's important for parents to receive a diagnosis from a qualified healthcare provider and work closely with them to determine the best course of treatment for their child.
Polyploidy is a condition where an organism has more than two sets of chromosomes, which are the thread-like structures that carry genetic information. It can occur in both plants and animals, although it is relatively rare in most species. In humans, polyploidy is extremely rare and usually occurs as a result of errors during cell division or abnormal fertilization.
In medicine, polyploidy is often used to describe certain types of cancer, such as breast cancer or colon cancer, that have extra sets of chromosomes. This can lead to the development of more aggressive and difficult-to-treat tumors.
However, not all cases of polyploidy are cancerous. Some individuals with Down syndrome, for example, have an extra copy of chromosome 21, which is a non-cancerous form of polyploidy. Additionally, some people may be born with extra copies of certain genes or chromosomal regions due to errors during embryonic development, which can lead to various health problems but are not cancerous.
Overall, the term "polyploidy" in medicine is used to describe any condition where an organism has more than two sets of chromosomes, regardless of whether it is cancerous or non-cancerous.
The severity of plant poisoning depends on the type of plant consumed, the amount ingested, and individual sensitivity. Some common plants that are toxic to humans include:
1. Castor bean (Ricinus communis): The seeds contain ricin, a deadly toxin that can cause severe vomiting, diarrhea, and abdominal pain.
2. Oleander (Nerium oleander): All parts of the plant are toxic, and ingestion can cause cardiac arrhythmias, seizures, and death.
3. Rhododendron (Rhododendron spp.): The leaves and flowers contain grayanotoxins, which can cause vomiting, diarrhea, and difficulty breathing.
4. Taxus (Taxus spp.): The leaves, seeds, and stems of yew (Taxus baccata) and Pacific yew (Taxus brevifolia) contain a toxin called taxine, which can cause vomiting, diarrhea, and cardiac problems.
5. Aconitum (Aconitum spp.): Also known as monkshood or wolf's bane, all parts of the plant are toxic and can cause nausea, vomiting, and abdominal pain.
6. Belladonna (Atropa belladonna): The leaves, stems, and roots contain atropine, which can cause dilated pupils, flushed skin, and difficulty urinating.
7. Deadly nightshade (Atropa belladonna): All parts of the plant are toxic and can cause nausea, vomiting, and abdominal pain.
8. Hemlock (Conium maculatum): The leaves and seeds contain coniine and gamma-coniceine, which can cause muscle weakness, paralysis, and respiratory failure.
9. Lantana (Lantana camara): The berries are toxic and can cause vomiting, diarrhea, and abdominal pain.
10. Oleander (Nerium oleander): All parts of the plant are toxic and can cause nausea, vomiting, and abdominal pain.
11. Castor bean (Ricinus communis): The seeds are particularly toxic and can cause vomiting, diarrhea, and abdominal pain.
12. Rhododendron (Rhododendron spp.): The leaves, stems, and flowers contain grayanotoxins, which can cause nausea, vomiting, and difficulty breathing.
13. Yew (Taxus spp.): The leaves, seeds, and stems of yew contain a toxin called taxine, which can cause vomiting, diarrhea, and cardiac problems.
It is important to note that while these plants are toxic, they can also be safely used in herbal remedies when prepared and administered properly under the guidance of a qualified practitioner. It is always best to consult with a medical professional before using any herbal remedy, especially if you have a medical condition or are pregnant or breastfeeding.
Congenital Abnormalities are relatively common, and they affect approximately 1 in every 30 children born worldwide. Some of the most common types of Congenital Abnormalities include:
Heart Defects: These are abnormalities that affect the structure or function of the heart. They can range from mild to severe and can be caused by genetics, viral infections, or other factors. Examples include holes in the heart, narrowed valves, and enlarged heart chambers.
Neural Tube Defects: These are abnormalities that affect the brain and spine. They occur when the neural tube, which forms the brain and spine, does not close properly during fetal development. Examples include anencephaly (absence of a major portion of the brain), spina bifida (incomplete closure of the spine), and encephalocele (protrusion of the brain or meninges through a skull defect).
Chromosomal Abnormalities: These are changes in the number or structure of chromosomes that can affect physical and mental development. Examples include Down syndrome (an extra copy of chromosome 21), Turner syndrome (a missing or partially deleted X chromosome), and Klinefelter syndrome (an extra X chromosome).
Other types of Congenital Abnormalities include cleft lip and palate, clubfoot, and polydactyly (extra fingers or toes).
Congenital Abnormalities can be diagnosed before birth through prenatal testing such as ultrasound, blood tests, and amniocentesis. After birth, they can be diagnosed through physical examination, imaging studies, and genetic testing. Treatment for Congenital Abnormalities varies depending on the type and severity of the condition, and may include surgery, medication, and other forms of therapy. In some cases, the abnormality may be minor and may not require any treatment, while in other cases, it may be more severe and may require ongoing medical care throughout the person's life.
Here are some key points to consider when discussing azoospermia:
1. Causes: Azoospermia can be caused by various factors, including blockages due to surgery, injury, or infection, hormonal imbalances, anatomical abnormalities like varicocele, and chromosomal abnormalities.
2. Diagnosis: Azoospermia is typically diagnosed through semen analysis, which involves examining a semen sample under a microscope to determine the presence of sperm cells. Other tests may also be performed to identify any underlying causes, such as hormone level testing and ultrasound imaging.
3. Treatment: Treatment for azoospermia depends on the underlying cause, but may include medications to address hormonal imbalances or surgery to correct anatomical abnormalities. Assisted reproductive technologies (ART) like IVF or ICSI can also be used to help achieve pregnancy.
4. Prognosis: The prognosis for azoospermia varies depending on the underlying cause and the effectiveness of treatment. In general, the earlier the condition is diagnosed and treated, the better the prognosis.
5. Impact on fertility: Azoospermia can significantly impact fertility, as the absence of sperm in the semen makes it difficult or impossible to achieve pregnancy through natural means. However, with the help of ART, many men with azoospermia can still achieve fatherhood.
6. Psychological impact: Azoospermia can have significant psychological and emotional impacts on men and their partners, particularly if they are trying to conceive. It is important to provide support and counseling to help cope with the challenges of this condition.
7. Prevention: There is no known prevention for azoospermia, as it is often caused by underlying genetic or hormonal factors. However, identifying and addressing any underlying causes early on can improve outcomes and increase the chances of achieving pregnancy.
Reproduction
Cultural reproduction
Asexual reproduction
Social reproduction
Plant reproduction
Fish reproduction
Canine reproduction
Fragmentation (reproduction)
Sexual reproduction
Reproduction (album)
Reproduction fees
Tone reproduction
Transnational Reproduction
Reproduction (economics)
Color reproduction
Vegetative reproduction
Reproduction (journal)
Human reproduction
Artificial reproduction
Dinosaur reproduction
Bimodal reproduction
Stratified reproduction
Mammalian reproduction
Reproduction (disambiguation)
Reproduction (novel)
LGBT reproduction
Reproduction speed
Monocotyledon reproduction
Partner-assisted reproduction
Net reproduction rate
Handbook of Reproduction | The BMJ
3D Scanning And Reproduction
Outbreak Reproduction Number Estimates | Mpox| Poxvirus | CDC
Crustacean - Reproduction, life cycles & external features | Britannica
Selected Publications - Pregnancy & Female Reproduction Group
An audit of shade reproduction of fixed metal ceramic prostheses
Reproduction
Mega Drive 2 Repro with 20 Built in Games
Lichen Reproduction: The Magic Of Ascomycetes & Basidiomycetes
Current Issue : Asian Pacific Journal of Reproduction
Reproductions and Publications | ICCROM
Feathers - Color Reproduction :: LaserSoft Imaging
Pregnancy and Reproduction: MedlinePlus
Human Reproduction Programme (‎HRP)‎: revised programme budget 2022-2023
Chinese Titanic Reproduction Updates | Encyclopedia Titanica
Reproduction, Genomics & Development, Department of Anatomy, University of Otago, New Zealand
Centre for Cultures of Reproduction, Technologies and Health : University of Sussex
Reproductions and interlibrary loans for individuals | National Library of Australia
Human reproduction research
Foxes by Franz Marc Reproduction For Sale | 1st Art Gallery
Economic viability outcome of assisted reproduction technology setup: Mathematical model
Reproduction - WSAVA2006 - VIN
Specialist Ruminant Reproduction (0.8 - 1.0 FTE) - Werken bij de Universiteit Utrecht - Universiteit Utrecht
Genetic Recombination - Biology - Cellular Reproduction | AskRose
Predator Reproduction Method Official - Page 6
GENDER PERSPECTIVES ON REPRODUCTION AND SEXUALITY: INTRODUCTION
| Emerald Insight
Winchester ~ Parker Reproduction - DHE ~ 28 Gauge | Bass Pro Shops
Fresh versus frozen embryo transfers for assisted reproduction | Cochrane
Reproductive2
- Vegetative reproduction and vegetative reproductive bodies are important to many lichens and have the advantage of dispersing both partners at the same time. (earthlife.net)
- As a Specialist (in training) in ruminant reproduction you are expected to actively contribute to the field of ruminant reproduction, specifically in reproductive management in dairy farms. (uu.nl)
Programme1
- The position at senior level includes 50% education and curriculum development and 50% clinically-driven applied research in the research programme ' Fertility and Reproduction ' (F&R), leading to publications in peer-reviewed journals. (uu.nl)
Fertility6
- This report provides current detailed information on the fertility patterns for the United States, as measured by reproduction and intrinsic rates, which have not been available since the release of an earlier report more than a decade ago ( https://www.cdc.gov/nchs/data/nvsr/nvsr52/nvsr52_17.pdf ). (cdc.gov)
- The reproduction and intrinsic rates are important to understanding population growth and change in the United States and are useful additions to the annual birth and fertility rates (such as the crude birth rate and general fertility rate) published by NCHS. (cdc.gov)
- Unlike the annual birth and fertility rates which measure the fertility of women in a given year, the reproduction rates summarize the number of births expected for a (hypothetical) group of 1,000 women over their lifetime given their particular fertility and mortality rates. (cdc.gov)
- For example, the net reproduction rate in 2014 was 897 which means that given their fertility and mortality rates in 2014, we would expect to see 897 daughters born per 1,000 of these women, which is below replacement level (1,000 daughters). (cdc.gov)
- For the three largest groups - non-Hispanic white, non-Hispanic black, and Hispanic- the total fertility, gross reproduction, and net reproduction rates declined by at least 7% from 2006 through 2014. (cdc.gov)
- While the total fertility, gross reproduction, and net reproduction rates and intrinsic rate of natural increase declined for the three race and Hispanic origin groups, there were differences among the groups in the rate of decline and among the rates themselves. (cdc.gov)
Plant reproduction2
- In order to build a better understanding of how plant populations change over time and how increasing degrees of population fragmentation can affect the long-term survival of species, my research group investigates various aspects of plant reproduction, population genetics and the evolution. (edu.au)
- Plant Reproduction, 32(1), 29-38. (unl.pt)
Research2
- Permission to consult or make research reproductions of archival documents does not grant or imply permission to publish this material or to provide copies to others. (iccrom.org)
- Reproduction : the new frontier in occupational and environmental health research, proceedings of the Fifth Annual RMCOEH Occupational and Environmental Health Conference held in Park City, Utah, April 5-8, 1983 / editors, James E. Lockey, Grace K. Lemasters, William R. Keye. (who.int)
Printing1
- 3D Printing then allows us to make near undistinguishable reproductions. (tudelft.nl)
Https1
- This plot uses the EpiNow2 package ( https://cran.r-project.org/web/packages/EpiNow2/index.html ) to estimate the time-varying reproduction number on cases by date of report. (cdc.gov)
Estimate2
Records1
- Reproduction of records older than 20 years is allowed upon obtaining the Archivist's authorization. (iccrom.org)
Effective reproduction3
- The graph shows the effective reproduction number (Rt) estimation over time based on complete data (green) or partial data (orange). (cdc.gov)
- The effective reproduction number (R t ) is similar to R 0 , but R t measures the number of persons infected by infectious person when some portion of the population has already been infected. (cdc.gov)
- The effective reproduction number R is a prominent statistic for inferring the transmissibility of infectious diseases and effectiveness of interventions. (bvsalud.org)
Options1
- If you want to order a digital reproduction of a library item from us, you have several options through our Copies Direct service. (nla.gov.au)
Total1
- The total reproduction of the population. (cdc.gov)
Make2
- We want to be able to make the ultimate reproduction of paintings, in order to be able to fully understand them and conserve their exact appearance. (tudelft.nl)
- This allows us to make 3D printed reproductions that gives rise to the question: if we can make an undistinguishable reproduction, what is the value of the original? (tudelft.nl)
Human3
- This study aimed to survey the knowledge produced on human assisted reproduction, by means of a bibliographic review of scientific publications. (bvsalud.org)
- then, we presented concepts related to infertility and to the techniques used in human assisted reproduction. (bvsalud.org)
- The situation of human assisted reproduction in Brazil was discussed, as well as the various aspects mentioned above. (bvsalud.org)
Sexual reproduction2
- We are interested in mechanisms controlling sexual reproduction and early embryogenesis in plants, and how these are impacted by climate change. (unl.pt)
- In the long run our projects will contribute to a better understanding of sexual reproduction in higher plants, a knowledge gain crucial to overcome fertilization barriers, adapt crops to climate change, and to enhance their productivity. (unl.pt)
Services1
- The results suggest the need to include mental health professionals in the assisted reproduction services, since this experience affects the narcissism of those involved, showing the importance of unconscious aspects in the desire to have a child. (bvsalud.org)
Journal1
- Thought you might appreciate this item(s) I saw in Asian Pacific Journal of Reproduction. (lww.com)
Population3
- The time-varying reproduction number is the average number of secondary cases infected by a single primary case in a large population. (cdc.gov)
- The new report focuses on the recent trends in these rates and also presents, for the first time, reproduction and intrinsic rates for the three largest population groups - non-Hispanic white, non-Hispanic black, and Hispanic. (cdc.gov)
- What is the difference between reproduction rates and intrinsic rates, and what can they tell us about population growth and change in the United States? (cdc.gov)
Form1
- From Describe item and add to cart choose the 'order form for copies and reproductions' option specifying your material type. (nla.gov.au)
Show1
- Applying E-optimal experimental design theory, we develop a weighting algorithm to minimise these issues, yielding the risk averse reproduction number E. Using simulations, analytic approaches and real-world COVID-19 data stratified at the city and district level, we show that E meaningfully summarises transmission dynamics across groups, balancing bias from the averaging underlying R with variance from directly using local group estimates. (bvsalud.org)
Rate1
- The take home message from the report is that reproduction rates and intrinsic rate of natural increase have declined overall from 1990 through 2014 and for the three largest race and Hispanic origin groups from 2006 through 2014. (cdc.gov)
Women4
- The reproduction rates can measure, for example, whether the number of births is at "replacement," that is, the level at which a given group of women can exactly replace themselves. (cdc.gov)
- In general, the reproduction rates declined the least for non-Hispanic white women and the most for Hispanic women from 2006 through 2014. (cdc.gov)
- Similarly, in 2014, the reproduction rates were lowest for non-Hispanic white women and highest for Hispanic women. (cdc.gov)
- The present study investigated women s expectations and feelings in the context of assisted reproduction. (bvsalud.org)
Issues1
- The Chinese have had titanic reproduction issues in the past. (encyclopedia-titanica.org)
Time1
- The reproduction rates can be used to compare populations over time or among different groups. (cdc.gov)
Risk1
- Risk averse reproduction numbers improve resurgence detection. (bvsalud.org)
Paper1
- Is anyone producing reproduction paper Wheatstone labels, the ones that are usually found in the lids of their boxes? (concertina.net)
Essential1
- GLUTAMATE RECEPTOR-LIKE channels are essential for chemotaxis and reproduction in mosses. (unl.pt)