Articles tagged with Hormones
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Clownfish develop white stripes during metamorphosis, with varying rates of formation depending on the sea anemone host. Thyroid hormone influences white bar development, with higher concentrations leading to more bars and earlier development.
Researchers have identified two subtypes of POMC neurons with distinct hormone sensing and appetite suppression profiles. The findings suggest that the diversity of these neurons is crucial for their function in regulating metabolism.
A large survey of women in California found significant racial and ethnic differences in personal care product use, with Black women more heavily exposed to endocrine-disrupting chemicals. The study aims to fill the gap in data on products used by women of color and informs guidance for self-protection and policy development.
Researchers at the University of Copenhagen have discovered a better way to target and eliminate beetles using eco-friendly methods. The study found that beetles regulate their kidney function in a unique way, which can be exploited to disrupt their fluid balance without harming other insects.
Scientists have discovered how a unique molecular switch in the brain causes feelings of fullness and may help develop improved anti-obesity drugs. The melanocortin receptor 4 is activated by setmelanotide, which binds to its binding pocket and enhances binding with calcium ions.
Women with bulimia nervosa performed worse on a task requiring self-control when stressed, but not those with anorexia nervosa. Brain activity differences were observed between the two groups when stressed, with women with bulimia showing impaired pre-emptive slowing down.
A study in red-haired mice reveals that a variant of the melanocortin 1 receptor affects pain sensitivity. The researchers found that lower levels of certain hormones lead to more opioid signals, elevating the pain threshold.
A new study has found a link between early exposure to flame retardants and an increased risk of premature birth in pregnant women. Women with high levels of polybrominated diphenyl ethers (PBDEs) in their blood were more likely to deliver their babies early, with no such association seen for those with lower exposure levels.
A new study reveals that higher ghrelin levels in healthy females predict a greater preference for smaller immediate monetary rewards over larger delayed financial rewards. This indicates more impulsive choices, contradicting previous research findings in rodents suggesting a similar effect.
A study published in ENDO 2021 found that children with adrenal insufficiency are at a significantly higher risk of severe COVID-19 complications due to impaired cortisol production. The researchers analyzed data from over 846 children with the condition, revealing a mortality rate 10 times higher than in children without adrenal disease.
A recent study found that nearly one-third of adults over 65 taking thyroid hormone also use medications known to interfere with thyroid function tests. The study highlights the complexity of managing thyroid hormone replacement in older adults, who often take multiple medications for other conditions.
Thyroid hormone doesn't operate as a straight-on/off switch but rather shifts the balance between gene activity, revealing a more nuanced mechanism of action. This discovery has significant implications for understanding metabolic diseases and developing targeted therapies.
A wearable sensor developed by EPFL's Nanolab and Xsensio measures cortisol levels in sweat to detect signs of burnout, providing a non-invasive and precise way to quantify stress levels. This innovation has the potential to revolutionize the study of physiological rhythms and the treatment of stress-related diseases.
A recent study published in Maturitas found that UV-radiation can affect the levels of oestrogens and gonadotropins in postmenopausal women, increasing the risk of osteoporosis, cardiac diseases, and neurodegenerative diseases. Researchers recommend carefully monitoring sun exposure to prevent harm.
Researchers found that high cortisol concentrations in newborn fawns were associated with lower survival rates. Cortisol levels varied between study areas, suggesting other environmental factors may influence mortality rates.
A recent NIH study found that women who use cannabis while trying to conceive are around 40% less likely to get pregnant each month. The study of over 1,200 women aged 18-40 with one or two miscarriages found no difference in miscarriage rates but noted differences in reproductive hormones involved in ovulation.
Researchers at Shinshu University discovered that silkworms use thermal information to determine when to lay dormant eggs. The neuropeptide corazonin plays a key role in regulating this process, and its release is controlled by GABA neurotransmission.
A recent study published by The Endocrine Society found that consuming drinks with sucrose can lead to lower levels of appetite-regulating hormones compared to glucose. The researchers discovered that individual characteristics, such as body weight and sex, also affect hormone responses to different types of sugar.
A multicentre study found a strong correlation between thyroid function and Takotsubo cardiomyopathy, a condition triggered by extreme emotional stress. The research identified two distinct mechanisms: an overactive thyroid gland promoting heart disease risk and an elevated target value of thyroid regulation related to the stress event.
Researchers at University of California - San Diego found a connection between gut bacteria diversity and active vitamin D levels in older men. The study suggests that microbiome diversity is closely associated with active vitamin D, while the precursor form has no significant link.
A new study led by Penn State researchers found a link between the number of times a person gives birth and their physical aging process. The study discovered that people who had few or many births showed signs of quicker biological aging compared to those who had given birth three or four times. The effects were only visible after men...
A new study published in eLife suggests that Lipocalin-2, a hormone produced by bone cells, could be used to treat people with obesity. The hormone has been shown to suppress food intake and increase feelings of fullness in mice and non-human primates.
The Hormones: The Inside Story podcast series explores the facts behind hormones and their impact on daily life, sleep, stress, body fat, fertility, and more. It cuts through myths and misinformation with expert-led science, empowering listeners to make informed decisions about their health.
The Endocrine Society's virtual annual meeting, ENDO 2021, offers journalists the opportunity to discuss groundbreaking research with world-renowned experts in diverse fields. The event features over 70 live sessions, 20 oral sessions, and six plenaries, covering topics such as diabetes, obesity, reproductive health, and more.
A new study finds that a drug called MVT-602 can improve fertility in women with reproductive health problems by targeting the kisspeptin hormone system. The drug's longer duration of action allows for less frequent dosing, offering improved treatment options for conditions such as polycystic ovary syndrome and hypothalamic amenorrhea.
A new study found that prenatal exposure to maternal thyroid hormones can result in longer telomeres in chicks, making them appear younger at birth. This could have significant implications for understanding the effects of telomere length on aging and mortality risk.
A recent study found that maternal body condition and stress hormone levels can affect the traits of jacky dragon offspring, including gender and growth rate. The research suggests that thermal opportunity may play a role in conveying environmental information from mother to offspring.
About 9% of trans adults in the US access hormones from non-licensed sources, posing health and safety risks. Lack of insurance coverage is a top issue affecting transgender people, ranked second only to direct violence.
A Michigan Medicine-led study finds that nearly 170,000 underinsured transgender Americans access hormones from non-licensed sources, posing health risks. The study highlights the need for improved insurance coverage and access to gender-affirming hormone therapy.
A recent study by ETH Zurich researchers found that workplace interruptions lead to increased cortisol levels and physical stress. Participants who received chat messages from superiors during a task reported better emotional and cognitive responses to stress.
A new study published in HortScience found that the commonly used rooting hormone IBA has no effect on cycad propagation, contrary to previous research. The study's findings highlight the need for further research on cycads and could improve conservation efforts in countries where commercial IBA products are difficult to obtain.
Researchers have identified phosphorus-containing compounds as markers for thyroid hormone action in tissue using non-invasive magnetic resonance spectroscopy. This allows for the measurement of hormone action in different areas of the body, potentially improving care for patients with thyroid dysfunction.
A USC study found that the hunger hormone ghrelin affects animals' eating frequency and memory. Rats with disrupted ghrelin signaling to the vagus nerve ate more frequently and gained weight, indicating impaired episodic memory.
Cats that eat one meal a day are more satisfied, with higher post-meal levels of appetite-regulating hormones. This feeding schedule also promotes lean body mass by increasing blood amino acids.
Researchers found that irisin altered the expression of genes regulating ACE-2, a key protein in viral entry. Irisin also tripled levels of TRIB3 transcription, which has been linked to lower replication of SARS-CoV-2. The study suggests irisin's therapeutic potential for COVID-19 treatment.
The Endocrine Society will hold ENDO 2021 in a fully virtual format from March 20-23, 2021. This decision follows the impact of COVID-19 on global events, while maintaining key elements of the meeting, including educational programming and networking opportunities.
A new study by Michigan State University researchers connects specific hormones present before and after birth with immune response and lifelong immunological disease development. Females are at increased risk for common diseases like asthma, allergies, and irritable bowel syndrome due to their perinatal hormone levels.
Researchers found a biological switch in the pituitary gland that enables animals to adapt to changing seasons, governed by hormones and genes. The study reveals a crucial role of the circadian gene BMAL2 in seasonal adaptations, shedding light on the underlying processes.
A recent study published in JAMA Network Open found that trauma-exposed adolescents with moderately elevated acyl-ghrelin hormone levels are almost eight times more likely to develop post-traumatic stress disorder (PTSD). The study also suggests that lower acyl-ghrelin levels may reduce the risk and severity of subsequent PTSD.
Research examines neuroendocrine effects of grief, finding elevated cortisol levels in bereaved individuals with possible long-term health consequences. The study calls for more research on potential markers of neuroendocrine activity associated with grief to inform tailored interventions.
Researchers developed a new method to estimate the health risks of PFAS in drinking water. The study found that women are particularly at risk of decreased thyroid hormone T3 levels due to exposure. Around 4% of local women in Ronneby, Sweden, may experience a 10% drop in T3 levels.
A new study detects biologically relevant AMH levels in human hair samples, which strongly correlate with serum levels and AFC. The results suggest a non-invasive test of ovarian reserve using hair samples may be more accurate and cost-effective than traditional blood tests.
A new approach has been developed to stimulate the production of antibiotics and antiparasitic compounds in actinobacteria. By exposing bacteria to specific hormones, researchers hope to produce large quantities of medically useful molecules.
Scientists at Bielefeld University have created a method to produce a biologically significant precursor of jasmonic acid, a hormone that helps plants defend against predators. The new approach mimics how plants naturally produce the hormone, using enzymes as plant catalysts in a synthetic process.
MIT researchers have developed a method to remotely control hormone release from the adrenal gland using magnetic nanoparticles, offering a less invasive alternative to existing treatments. The technique uses heat-sensitive ion channels to stimulate hormone production, potentially treating conditions such as PTSD and chronic pain.
Researchers developed an easy-to-use sensor that can sensitively detect changes in ethylene levels, a key hormone in plant health. The sensor uses a network of single-walled carbon nanotubes to monitor fluctuations in ethylene gas levels, with high sensitivity suitable for monitoring plants in the field.
Researchers found that commonly used hormone analysis method in animal hair can overestimate cortisol levels by up to ten times. A more comprehensive mass spectrometry analysis revealed significant discrepancies and suggested the need for careful validation of each enzyme immunoassay before using it on hormone analysis from hair samples.
Researchers at the University of Göttingen investigated whether changes in a woman's menstrual cycle affect her preferences for men's behavior. The study found that women find all men slightly more attractive when fertile and perceive flirtier men as more attractive for short-term relationships, but less attractive for long-term ones. ...
Researchers have discovered that kisspeptin can enhance brain activity related to attraction and arousal in men, particularly those with low sexual quality of life. The study used MRI scans to track brain responses to female faces and perfume, finding that kisspeptin triggered greater activation in attraction pathways.
African satyrid butterfly Bicyclus anynana adjusts its wing eyespot size in response to low temperatures, changing the pattern to resemble a dead leaf. This complex physiological and molecular response is unique among butterfly species, suggesting it evolved gradually over millions of years.
A University of Gothenburg study reveals that menopausal age is unclear for many women, particularly those using hormonal birth control. Researchers found that after 1992, the number of women still menstruating decreased, leaving uncertainty in determining exact menopausal ages.
Researchers found that measuring anti-Müllerian hormone (AMH) levels can predict when a woman's final menstrual period will occur. AMH serves as an indicator of remaining egg supply, decreasing with age. This new test allows for more accurate predictions within 12 to 24 months in women's late 40s and early 50s.
A high-fat meal can disrupt communication between the intestine and the rest of the body through enteroendocrine cells, which produce hormones to signal digestion and nutrient absorption. The study found that these cells become overstimulated and exhausted after a high-fat meal, leading to silencing of their signals.
Breast cancer incidence rates are significantly higher in black men than white men, particularly for hormone receptor-positive subtypes. These racial differences have significant implications for patient outcomes and may be linked to genetic and non-genetic factors.
University of Guelph researchers have discovered that cortisol, a key stress hormone, accumulates in fish scales slowly and remains there for weeks. This allows scientists to gauge long-term stress levels without invasive blood tests.
Daily exercise at moderate intensity may improve appetite and blood glucose regulation by increasing glucagon-like peptide-1 (GLP-1) levels. Moderate-intensity physical activity for just 30 minutes a day, such as brisk walking or gardening, could lower the risk of diabetes in men.
A new Boston University School of Public Health study estimates the non-cancer health effects of breathing airborne PCBs around New Bedford Harbor, affecting thyroid hormones in people living close to the harbor. The levels of PCBs in the air are high enough to raise risks of diabetes, low birth weight, and impaired neurodevelopment.
Researchers at the University of Copenhagen have discovered that stress hormones, such as corticosterone, play a crucial role in controlling the circadian rhythm of brain cells. By using test rats and a new method involving medical micropumps, they were able to restore the rhythmic activity of clock genes in the cerebellum even after t...
Researchers observed a sex difference in how women and men respond to circadian disruption. Women experienced decreased satiety hormones, leading to reduced fullness, while men showed increased cravings for energy-dense foods.
Plant scientists have doubled the amount of grains a sorghum plant can produce by identifying novel genetic variations in the MSD2 gene. This breakthrough could lead to improved crop yields and address global food production challenges related to climate change and population growth.