Current Hormones News and Events | Page 25

Current Hormones News and Events, Hormones News Articles.
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Women with polycystic ovary syndrome have higher BPA blood levels
Women with the polycystic ovary syndrome, the most common hormone imbalance in women of reproductive age, may be more vulnerable to exposure to the chemical bisphenol A (BPA), found in many plastic household items, according to a new study. The results will be presented Sunday at the Endocrine Society's 92nd Annual Meeting in San Diego. (2010-06-21)

New evidence that smokeless tobacco damages DNA and key enzymes
Far from having adverse effects limited to the mouth, smokeless tobacco affects the normal function of a key family of enzymes found in almost every organ in the body, according to the first report on the topic in ACS' monthly journal Chemical Research in Toxicology. The enzymes play important roles in production of hormones; production of cholesterol and vitamin D; and help the body breakdown prescription drugs and potentially toxic substances. Smokeless tobacco also damages genetic material in the liver, kidney and lungs. (2010-06-16)

UM School of Medicine scientists find hormone influences sensitivity to sweetness
A hormone that helps to regulate blood sugar levels may also influence a person's sensitivity to sweet-tasting foods, according to a new study from researchers at the University of Maryland School of Medicine. They found that blocking the tongue's ability to respond to the hormone known as glucagon decreases the taste system's sensitivity to sweetness. That is, changing the actions of the hormone glucagon could control how foods taste. (2010-06-15)

Findings provide new therapeutic route for rare kidney disease
Scientists from the University of Leeds have discovered the mechanisms of a protein known to play an active part in the inherited kidney disorder, Dent's disease. The findings provide a new focus for future therapies for the disease, for which there is currently no cure. (2010-06-14)

Diabetes may double cancer risk in women
A new study from Tel Aviv University finds that type 2 adult-onset diabetes has a surprisingly positive effect on reducing the rate of prostate cancer in men, but may double the risk of female genital and other cancers. The new study is not the first to report such a risk, but it's one of the largest to confirm these findings, and it's the first to determine the statistical differences in cancer risks for men and women. (2010-06-10)

What happens when we get angry?
When we get angry, the heart rate, arterial tension and testosterone production increases, cortisol (the stress hormone) decreases, and the left hemisphere of the brain becomes more stimulated. This is indicated by a new investigation lead by scientists from the University of Valencia that analyzes the changes in the brain's cardiovascular, hormonal and asymmetric activation response when we get angry. (2010-05-31)

Prenatal exposure to BPA and DES may increase breast cancer risk
Exposure in the womb to chemicals like Bisphenol-A (BPA) and Diethylstilbestrol (DES) can increase an offspring's risk of breast cancer, researchers at Yale School of Medicine report in a study published in current issue of Hormones and Cancer, a journal of the Endocrine Society. (2010-05-28)

Male sex hormones in ovaries essential for female fertility
Male sex hormones, such as testosterone, have well defined roles in male reproduction and prostate cancer. What may surprise many is that they also play an important role in female fertility. A new study finds that the presence and activity of male sex hormones in the ovaries helps regulate female fertility, likely by controlling follicle growth and development and preventing deterioration of follicles that contain growing eggs. (2010-05-26)

Prenatal exposure to endocrine-disrupting chemicals linked to breast cancer
A study in mice reveals that prenatal exposure to endocrine-disrupting chemicals, like bisphenol-A (BPA) and diethylstilbestrol (DES), may program a fetus for life. Therefore, adult women who were exposed prenatally to BPA or DES could be at increased risk of breast cancer, according to a new study accepted for publication in Hormones & Cancer, a journal of the Endocrine Society. (2010-05-21)

Jefferson scientists identify a new protein involved in longevity
Researchers in the department of biochemistry and molecular biology at Thomas Jefferson University have found that the level of a single protein in the tiny roundworm C. elegans determines how long it lives. (2010-05-07)

Feeling stressed? So is the poplar
Research led by Michigan Technological University scientists has identified the molecular mechanism that poplar trees use to adapt to changing soil conditions, as well as some of the genes that turn the process on or off. (2010-05-06)

PMH cancer researchers link ovarian hormone to breast stem cells growth
Cancer researchers at Princess Margaret Hospital have discovered that the ovarian hormone progesterone plays a pivotal role in altering breast stem cells, a finding that has important implications for breast cancer risk. (2010-05-05)

Scientists clock onto how sunlight puts a spring in our step
Scientists have discovered two (2010-04-29)

Testosterone directly amplifies but does not program male behaviors
New research uncovers some surprising information about how sex hormones control masculinization of the brain during development and drive gender related behaviors in adult males. The study, published by Cell Press in the April 29 issue of the journal Neuron, demonstrates that direct action of testosterone, the prototypical male hormone, is unnecessary for masculinizing the brain and behavior. (2010-04-28)

Study finds body's response to repetitive laughter is similar to the effect of repetitive exercise
A new study looks at the effect that mirthful laughter and distress have on modulating the key hormones that control appetite. (2010-04-26)

Anti-aging hormones: Little or no benefit and the risks are high
In the wake of the American Medical Association's Council on Science and Public Health's recently released report, (2010-04-13)

Demonstrated in vivo the transfer of maternal thyroid hormones to the fetus
By results from a Italian study conducted by a team of researchers led by the endocrinologist of Universita Cattolica Alfredo Pontecorvi clarify the role of thyroid hormones in the mother's embryo-fetal nervous system and other organs during pregnancy. The animal model created can be used to better understand the adverts effects of maternal thyroid diseases in the development of the unborn child but also to develop drug therapies to treat diseases such as heart failure, obesity and hypercholesterolemia. (2010-04-12)

Stress hormones accelerate tumor growth
Chronic stress has recently been implicated as a factor that may accelerate the growth of tumors; the mechanisms underlying this effect have not been determined. However, new research using human ovarian cancer cell lines and tumor specimens indicates that stress hormones can contribute to tumor progression in patients with ovarian cancer, suggesting that they might be good therapeutic targets. (2010-04-12)

Hormone sensitivity of breast stem cells presents drug target
Researchers at the Walter and Eliza Hall Institute have discovered that breast stem cells are exquisitely sensitive to the female hormones estrogen and progesterone, a finding that opens the way for the development of new preventions and treatments for breast cancer. (2010-04-11)

Medicine residues may threaten fish reproduction
Researchers at Umea University and the Sahlgrenska Academy at the University of Gothenburg, Sweden, have discovered that traces of many medicines can be found in fish that have been swimming in treated waste water. One such medicine, the hormone levonorgestrel, was found in higher concentrations in the blood of fish than in women who take the contraceptive pill. Elevated levels of this hormone can lead to infertility in fish. (2010-04-04)

Biologists discover an on/off button on plants' alarm system
Scientists connected to VIB and Ghent University have discovered how plants turn their defense mechanisms on and off. The system is apparently controlled by a key protein that the researchers have named (2010-04-01)

Depression affects how women with PMDD respond to stress, pain
These findings give physicians more reason to search for a more specific diagnosis and could possibly lead to more precise treatments, said UNC's Susan Girdler, Ph.D. (2010-03-30)

Beta-blockers help reduce metastasis and improve survival in breast cancer patients
Treatment with beta-blockers can help reduce the spread of cancer, says the first study in the world to have investigated their effect in breast cancer patients. Patients treated with beta-blockers showed a significant reduction in metastasis and better survival. The use of beta-blockers appears to slow down tumor growth and could also be used to target those patients who have an increased risk of developing secondary cancers. The study will be presented at the European Breast Cancer Conference on Friday, March 26. (2010-03-26)

Pregnancy for breast cancer survivors: Meta-analysis reveals it is safe and could improve survival
Women who have been treated for breast cancer can choose to become pregnant and have babies, without fears that pregnancy could put them at higher risk of dying from their cancer, according to a major new study. (2010-03-25)

Obesity and passive smoking reduce oxygen supply to unborn baby
Babies born to mothers with obesity and exposed to passive smoking are more likely to have health problems than others. This conclusion is based on evidence of elevated levels of nucleated red blood cells in the umbilical cord reported in the International Journal of Food Safety, Nutrition and Public Health. (2010-03-16)

U-M researchers solve a molecular mystery in muscle
The muscle-building abilities of hormones known as insulin-like growth factors (IGFs) are legendary. Just do an online search and you'll find not only scientific papers discussing the effects of IGFs on the cells that give rise to muscle tissue, but also scores of ads touting the purported benefits of IGF supplements for bodybuilding. (2010-03-15)

GUMC researchers: Female sex chromosomes, not just hormones, help regulate blood pressure
Researchers at Georgetown University Medical Center have determined that something in female sex chromosomes appears to trigger a rise in blood pressure after the onset of menopause. This finding challenges the current belief that sex hormones are largely responsible for regulating blood pressure. (2010-03-15)

Diabetes' link to eating disorders explored
Diabetics, under the gun to better manage their disease by controlling their food intake and weight, may find themselves in the sticky wicket of needing treatment that makes them hungry, researchers said. (2010-03-11)

Experimental drug that mimics thryoid hormone safely lowers 'bad' cholesterol
People whose (2010-03-10)

How estrogen feeds breast tumors
A new study is providing insight into how estrogen fuels many breast cancers, and researchers say the findings could lead to new cancer-fighting drugs. (2010-03-02)

Different fat types can help or hinder obese girls' bone health
According to a new study accepted for publication in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism, obese teenage girls with a greater ratio of visceral fat (fat around internal organs) to subcutaneous fat (fat found just beneath the skin) are likely to have lower bone density than peers with a lower ratio of visceral to subcutaneous fat. (2010-03-01)

Effective prostate cancer treatment discovery
Monash University biomedical scientists have identified a new way to treat castrate resistant cells in prostate cancer sufferers -- the most common cancer in Australian men. (2010-02-25)

Effects of iodine supplements on maternal thyroid function studied
Iodine is an essential element for synthesizing thyroid hormones. A team of researchers from the Childhood and Environment Project has studied the consequences of pregnant women consuming it in their diet and in supplements. The results suggest the need to evaluate their iodine nutritional status before systematically recommending taking it during pregnancy. (2010-02-24)

Stress raises risk of mental decline in older diabetics, study shows
Stress raises the risk of memory loss and cognitive decline among older people with diabetes, research suggests. Researchers at the University of Edinburgh studied more than 900 men and women aged between 60 and 75 with type 2 diabetes, which tends to be common after the age of 40. They found that brain function slowed in participants with higher levels of the stress hormone cortisol. (2010-02-22)

Battlefield camaraderie yields long-term dividends for veterans, study finds
Civil War veterans who served in military units characterized by camaraderie were much less likely decades later to die of a stroke or a heart condition than veterans from less cohesive companies, two UCLA economists have found. (2010-02-18)

OHSU researchers discover cellular mechanism that protects against disease
Researchers at Oregon Health & Science University have discovered a new mechanism within human cells that constantly protects us against disease. (2010-02-15)

Research identifies gene with likely role in premenstrual disorder
Some women are especially sensitive to the natural flux of hormones in the menstrual cycle. New research points to a gene that likely influences how women respond to swings in estrogen levels and could help diagnose and treat premenstrual dysphoric disorder and inform treatments during menopause, such as hormone replacement therapy, researchers say. (2010-02-08)

NIH scientists identify maternal and fetal genes that increase preterm birth risk
Researchers at the National Institutes of Health have identified DNA variants in mothers and fetuses that appear to increase the risk for preterm labor and delivery. The DNA variants were in genes involved in the regulation of inflammation and of the extracellular matrix, the mesh-like material that holds cells within tissues. (2010-02-04)

Cedars-Sinai researchers: Fat behaves differently in patients with polycystic ovary syndrome
Fat tissue in women with polycystic ovary syndrome produces an inadequate amount of the hormone that regulates how fats and glucose are processed, promoting increased insulin resistance and inflammation, glucose intolerance and greater risk of diabetes and heart disease, according to a study conducted at the Center for Androgen-Related Research and Discovery at Cedars-Sinai Medical Center. (2010-02-01)

MicroRNA: A glimpse into the past
The last ancestor we shared with worms, which roamed the seas around 600 million years ago, may already have had a sophisticated brain. Fossils cannot give us this information, but scientists at EMBL Heidelberg obtained it by studying small molecules called microRNAs. Their findings are published today in Nature. (2010-02-01)

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