Articles tagged with Hormones
A UC Riverside study identifies how a Fragile X gene mutation contributes to premature ovarian failure, leading to early infertility. Researchers found that the mutation affects neurons regulating reproduction in the brain and ovaries, causing an increase in hormone production and faster secretion rates.
A new study from McGill University reveals that every day Canadians are exposed to Bisphenol S (BPS) in fresh foods due to chemical migration from packaging materials. High concentrations of BPS were found on thermal food labels, exceeding the European Union's regulatory limit.
A study published in Nature Immunology found that female mouse and human NK cells have more of a specific epigenetic regulator called UTX, which boosts anti-viral function while repressing NK cell numbers. This suggests that therapies need to be tailored to individual differences, including sex.
Researchers found that Matcha tea powder reduces depression in mice by activating dopaminergic neural circuits and improving mood. The study's results suggest that Matcha's antidepressant-like effects depend on the animal's prior mental state, with stress-susceptible mice showing a significant response.
Researchers examine the effects of gender-affirming androgen therapy on breast tissue in transgender men with single-cell resolution. Gene expression is silenced, and male gene programs are activated. This work has implications for the treatment of breast cancer across all populations.
Researchers discovered a significant increase in serotonin transporter density in the midbrain of patients with PMDD during the periovulatory phase, which was associated with increased depressed mood. The study suggests that taking SSRIs at specific times during the menstrual cycle may help target these changes and alleviate symptoms.
A University of Arizona-led study found that expectant lemur dads see a significant increase in estradiol during their mates' pregnancies, which may help prepare them for parenting. The hormone spike occurs mainly in the third trimester and is associated with increased maternal sensitivity.
A study analyzed gene expression data from 46 different human tissues to understand the impact of circadian and circannual cycles on human health. The research revealed that certain genes have strong diurnal or seasonal preferences, which could inform effective diagnostic and therapeutic strategies.
A study found that competition preparation temporarily reduces resting energy expenditure in physique athletes, primarily due to reduced energy intake and lower levels of thyroid hormone T3. This reduction can complicate weight loss and make it difficult for athletes to compete.
A recent study at Ruhr-University Bochum found that interactive online teaching can increase students' physiological state of arousal compared to passive online or face-to-face teaching. Students in interactive online classes reported feeling more involved and attentive but also experienced increased anxiety.
A new study published in the Journal of Clinical Endocrinology & Metabolism found that phthalate exposure may contribute to a higher incidence of diabetes in women. The research, which studied 1,308 women over six years, showed that White women exposed to high levels of certain phthalates had a 30-63% higher chance of developing diabetes.
A retrospective study found associations between vitamin D levels and fine motor development delays, as well as thyroid hormones with cognitive development. Certain metals were also linked to language, cognitive, or motor skill development.
The study reveals that SWEET13 transporter is necessary for pollen production, highlighting the importance of sucrose transport. Researchers used molecular docking and simulation to understand how SWEET13 selectively transports sucrose over gibberellin.
A recent study by Universitat Oberta de Catalunya reveals that Spanish citizens have lower vitamin D levels compared to Northern European nations. Despite the importance of this hormone for overall health, supplementation is not commonly practiced in Spain.
A new study from the University of South Australia found that eating 30-50 grams of almonds can help people cut back on kilojoules consumed each day. This leads to a reduced energy intake by 300 kilojoules, mostly coming from junk food.
Researchers found that IGF1 gene therapy increases kisspeptin expression and GnRH release, and alters microglial cell numbers, suggesting a potential protective effect against reproductive decline. This could lead to new strategies for optimizing lifespan and combating age-related health problems in women.
New insights into the processing of hormones in the human gut reveal dozens of peptides regulating appetite, bowel movement, and insulin secretion. By studying human intestinal organoids, researchers characterized potentially novel gut hormones, including glucagon, and explored its role in human physiology.
Research from the University of Pittsburgh found that high COVID-19 stress in women is associated with changes in menstrual cycle length, period duration, and spotting. The study suggests that these changes can have economic and health consequences for women, including increased costs for feminine hygiene products.
Researchers have successfully isolated parathyroid stem cells and maintained them in lab as organoids for an extended period. These patient-derived parathyroid organoids (PTOs) closely mimic human parathyroid tissue, enabling the study of parathyroid diseases and drug development.
A new study at the Turku PET Centre discovered that shorter daylight hours increase opioid receptor levels in brown fat of rats. This complements previous findings on day length modulating opioid receptor levels in brain emotional circuits.
Researchers found that administering nitric oxide to preterm mice after birth can reverse symptoms of congenital hypogonadotropic hypogonadism, including sensory and cognitive disorders. A clinical trial is now underway to test this treatment in human preterm infants.
A recent study published in Acta Oncologica found that young women who have had cancer are at a higher risk of experiencing sexual problems, including loss of libido and intimacy issues. The study, which surveyed nearly 700 women, suggests that the type and intensity of cancer treatment can influence a patient's sex life.
The Leducq Foundation has awarded $7.5 million to UVA researchers, led by Mete Civelek, to investigate sex differences in atherosclerosis and $8 million to Coleen McNamara to advance immunotherapy for cardiovascular disease. These projects aim to improve understanding of heart disease and develop new treatments.
A novel fluorescent sensor has been developed to visualize the release of oxytocin, also known as the 'happy hormone', in living animals. The sensor, called MTRIA OT, allows for real-time measurement of extracellular oxytocin dynamics in the brain, revealing variability in OT levels dependent on behavioral and physical conditions.
Research from UVA Cancer Center finds that an unhealthy gut microbiome can trigger changes in normal breast tissue, facilitating cancer's spread to other parts of the body. The study suggests that targeting the gut-mast cell relationship could help prevent breast cancer recurrence and metastasis.
Researchers found that stressed mice exhibited decreased neuron excitability in the dorsal hippocampus, which may drive social avoidance, while resilient mice showed increased excitability. This difference was linked to changes in stress hormone receptors and HCN1 protein expression.
Children with obesity who lose weight show increased hunger-related brain activity, despite changes in gut hormone levels. This disconnect may underlie why many people regain weight after a strict diet, highlighting the need for targeted treatments.
A cross-sectional study of over 25,000 adults found that approximately 70% of identified adrenal tumors were nonfunctioning, regardless of participant's age. The prevalence of adrenal tumors increased with age, from 0.2% in young adults to 3.2% in older adults.
A study on wild bonobos found that sibling birth causes a five-fold increase in cortisol levels and reduces immune response. This stress reaction lasts up to seven months and is independent of age-related weaning processes.
A study published in Cell Metabolism found that healthy underweight individuals had lower food intakes and lower activity levels, yet surprisingly higher-than-expected resting metabolic rates linked to elevated thyroid hormones. These findings contradict previous assumptions about metabolism in low BMI individuals.
Researchers have created a noninvasive method to identify tumors causing hypertension by reducing radiation exposure. The new fluorine-based agent replaces an iodine-based agent and may allow for screening of patients with hypertension-linked aldosterone adenomas.
Researchers at Kyoto University discovered a unique subpopulation of resident fibroblasts that produce erythropoietin, a hormone critical for oxygen delivery in the kidneys. This 'crack team' of kidney cells has been found to play a crucial role in disease recovery and may hold new avenues for treatment.
Researchers have discovered how sea cucumbers produce defensive chemicals using genome mining techniques. The animals' unique ability to biosynthesize toxins has been found to be linked to the diversion of a sterol-producing enzyme, resulting in the production of valuable medicinal compounds.
Research at Kyoto University found that estradiol suppresses severe skin inflammation in females compared to males, revealing its therapeutic potential. The hormone regulates immune cells and reduces IL-17A and IL-1β cytokines production.
A new study links polycystic ovary syndrome (PCOS) to an increased risk of adverse cardiovascular events and pregnancy outcomes during delivery, including preeclampsia and peripartum cardiomyopathy. Women with PCOS are at a higher risk for heart complications compared to those without the hormone disorder.
A UC Riverside genetic discovery found that mosquitoes lack the primary ecdysone transporter, allowing researchers to develop a mosquito-specific insecticide. This breakthrough could help control Zika, dengue, and other virus-carrying mosquitoes without harming beneficial insects.
A new study presented at ENDO 2022 found that inactivated and mRNA COVID-19 vaccines do not cause significant fluctuations in thyroid function or increase the risk of emergency department visits among patients treated for hypothyroidism. The research suggests that these vaccines can be a safe option for this vulnerable population.
A randomized controlled trial shows significant improvements in testosterone replacement therapy for men with poorly-controlled type 2 diabetes and hypogonadism. The treatment improved symptoms, libido, and quality of life, as well as delayed verbal recall, a potential early sign of dementia.
Two experimental male contraceptive pills, DMAU and 11β-MNTDC, have shown promising results in lowering testosterone levels without unacceptable side effects. The study found that 75% of men who took the active drug were willing to use it in the future, compared to 46.4% of those taking a placebo.
A recent study published in the Journal of Endocrinology suggests that lowering blood glucose levels can partially restore reproductive hormone levels and ovulation in female mice with obesity. The study used dapagliflozin, a common type 2 diabetes medication, to treat the mice, resulting in improved fertility outcomes.
A study of middle-aged women approaching menopause found increased body fat, particularly in the waist area, but those with healthier lifestyles had lower fat mass. The research suggests that maintaining physical activity and a balanced diet during this life stage may help protect against health risks associated with increased adiposity.
A recent study published in Breast Cancer Research suggests that self-reported male infertility may be associated with an increased risk of invasive breast cancer. The researchers conducted a case-control study among 1,998 males diagnosed with breast cancer, comparing them to 1,597 control males without blood relatives. The study found...
Women's metabolism alters during menopause due to changes in sex hormone levels. Metabolite profiles show increased lipid and cholesterol levels, especially triglycerides and LDL particles, which can lead to atherosclerosis.
Research published in the European Journal of Preventive Cardiology found that menopause is associated with a decline in cardiovascular health due to hormonal changes. Levels of bad cholesterol rise during menopause, and shifts in sex hormones are linked to this increase.
A new study published by The Endocrine Society suggests that exposure to per- and polyfluoroalkyl substances (PFAS) and phthalates may impair bone health in male teenagers. Researchers analyzed urine and blood samples from over 800 adolescents, finding an association between certain PFAS and phthalates and reduced bone mineral density.
A new study reveals that cardiac surgery causes distinct patterns of cortisol secretion, which may reflect individual physiological differences and inflammatory responses. Researchers identified three dynamic phenotypes: single-pulse, two-pulse and multiple-pulse dynamics, suggesting improved diagnostics and personalized interventions ...
A study published in the Endocrine Society's Journal of Clinical Endocrinology and Metabolism found that undertreatment with thyroid hormone replacement can lead to longer hospital stays and higher readmission rates. Patients with high TSH levels before hospitalization had a 49% higher risk of 30-day readmission.
A study published in Scientific Reports found that shelter dog hair cortisol levels increased by one-third after six weeks in the shelter, indicating elevated stress. After adoption, cortisol levels decreased, returning to pre-shelter values. The results suggest that even well-managed shelters can cause stress in dogs.
A new study reveals funding for fertility preservation policies varies across the UK, with Scotland offering the most inclusive approach. The study highlights the need for standardization of policies to ensure equal access to care for patients.
Researchers have developed a new implant that reduces ghrelin levels and body weight gain by half when exposed to laser light, offering a minimally invasive treatment option for obese patients. The implant uses a laser-activated dye to kill cells producing the 'hunger hormone'.
Researchers at UCLA found that premenopausal women with low levels of anti-Mullerian hormone are at a higher risk of experiencing significant bone loss within two to three years. The study suggests that measuring AMH levels could help physicians identify women at risk and provide targeted treatment.
A study of over 3,000 mother-child pairs from six European countries found an association between prenatal bisphenol A exposure and increased risk of asthma and wheezing in school-age girls. The study revealed a high prevalence of BPA in maternal urine during pregnancy.
A new study confirms that abnormalities in the GDF15 gene are involved in hyperemesis gravidarum, a condition causing severe nausea and vomiting during pregnancy. The discovery may lead to targeted treatments and improved care for women with HG.
Researchers discovered that bacteria suppress membrane protein transport in response to stress, using alarm hormones to regulate the process. This allows the microorganisms to slow down their cellular processes and recover when conditions become more favorable.
A study of 104 transgender and nonbinary youths found that gender-affirming care reduces depression and suicidal thoughts over 12 months. The treatment significantly improved mental health outcomes in the participants.
Researchers found that genetic relatedness correlates with hormonal responses and behavioural reactions in fish, allowing for selective breeding of less-stressed fish. This approach could simplify breeding methods for aquaculture and aquariums.
Research published in BMJ Open found that older women with higher oestrogen levels had a lower risk of severe COVID-19 infection and death. Women taking hormone replacement therapy also showed a significantly reduced risk of dying from COVID-19, highlighting the potential benefits of hormonal treatment in reducing infection severity.
Researchers discovered a protein called PHR regulates arbuscular mycorrhiza (AM) symbiosis based on phosphate availability. AM promotes phosphate uptake and other nutrient absorption, enhancing plant resistance to stressors.
Researchers discovered that toxic goiter causes shrinkage in central brain regions, such as the hippocampus and amygdala, which can lead to mental symptoms. The study provides key insights for patients with Graves' disease, a common form of hyperthyroidism.
A UMass Amherst study found associations between oral contraceptive use and certain tubal ligation methods with lower levels of antimüllerian hormone (AMH), a biomarker for ovarian aging. This may suggest an increased risk for early menopause in women who have used oral contraceptives or undergone specific types of tubal ligation.