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Hormones in Biological News

Stress puts double whammy on reproductive system, fertility

... know that stress boosts levels of stress hormones - glucocorticoids such as cortisol - that inhibit ... to an increase in glucocorticoids - stress hormones - produced by the adrenal gland. In the brain, ... affect GnIH levels in the brain. The homologous hormones in mammals have been dubbed RFamide-related ...

Specific genetic cause of fetal alcohol-related developmental disorders found

... pregnancy decreases the level of maternal thyroid hormones and, therefore, fetal thyroid hormones. "Specific concentrations of thyroid hormones must be available in the fetal brain to support ... turn, reduces the availability of vital thyroid hormones in the parts of the brain that control learning, ...

Simple drug treatment may prevent nicotine-induced SIDS: Study

... stress of being born induces the release of the hormones adrenaline and noradrenalinecollectively called ... the adrenal glands. During birth, these hormones in turn signal the baby's lungs to become ready ... example. However, the ability to release those hormones during moments of apnea or asphyxia is impaired ...

Laughter remains good medicine

... had surprising and significant effects. Two hormones beta-endorphins (the family of chemicals that ... Chronically released high levels of these stress hormones can be detremential to the immune system. ... for 12 months, testing their blood for the stress hormones epinephrine and norepinephrine; HDL cholesterol; ...

Laughter remains good medicine

... had surprising and significant effects. Two hormones beta-endorphins (the family of chemicals that ... Chronically released high levels of these stress hormones can be detremential to the immune system. ... for 12 months, testing their blood for the stress hormones epinephrine and norepinephrine; HDL cholesterol; ...

New drug shows promise in treating drug-resistant prostate cancer

... anti-androgen therapies that prevent male hormones from stimulating the growth of prostate cancer ... each year in the United States. The male hormones testosterone and dihydrotestosterone, which are ... and drugs that block the receptors for these hormones are the most common treatment for the disease in ...

New medications show promise in treating drug-resistant prostate cancer

... antiandrogen therapies that prevent male hormones from stimulating growth of prostate cancer cells. ... each year in the United States. The male hormones testosterone and dihydrotestosterone -- also ... and drugs that block the receptors for these hormones are the most common treatment for the disease in ...

Major NSF grant boosts UNH research on hormonal genomics

... (NSF) for research on brain and pituitary hormones and receptors. With the four-year grant, ... and I will test the hypothesis that these hormones and their receptors share common functional and ... hypothalamus, a region of the brain that produces hormones that trigger the release of gonadotropin from the ...

Internationally acclaimed researcher joins UH faculty thanks to $5.5 million grant

... a result of the ETF grant, UH has recruited a top hormones researcher and his team to carry out laboratory ... Gustafsson, a renowned figure in the study of hormones and a member of both the National Academy of ... receptors provide the lock that the key of your hormones fit in. They allow your DNA to be read and ...

Protein that regulates hormones critical to women's health found in pituitary

... a role in the release of neurotransmitters and hormones in the brain. The scientists found abundant ... the protein may adjust the release of the two hormones that come almost exclusively from the posterior ... or vesicles, filled with neurotransmitters and hormones within nerve terminals. When an electrical ...

Why the 'perfect' body isn't always perfect

... December issue of Current Anthropology . The hormones that make women physically stronger, more ... women significantly higher? That's where the hormones come in. Androgens, a class of hormones that includes testosterone, increase waist-to-hip ...

8 National Medals of Science awardees to be honored at gala, then the White House

... the function of plasma membrane receptors for hormones and drugs under normal and pathological ... had a profound impact on our knowledge of steroid hormones in normal development and in diseases, including ... molecular endocrine pathway" by which steroid hormones act in target cells. They showed that ...

Is that song sexy or just so-so?

... demonstrate a possible neural mechanism by which hormones may alter the processing of these signals and ... Maney's research examines how genes, hormones and the environment interact to affect the brain, ... study on white-throated sparrows that suggested hormones may modulate the way the auditory system ...

Biologists identify genes controlling rhythmic plant growth

... But a similar interplay of light sensing, plant hormones and circadian rhythms that leads to a pronounced ... plants detect they're shaded, they elicit growth hormones to elongate. You can see that in the extreme when ... hours to allow a wave of multiple plant growth hormones to act within the cells, then closing the gate to ...

Sex hormones link to heart risk

... compared with women of a similar age and sex hormones are to blame, according to a new University of ... The researchers looked at ways that the sex hormones - estradiol, estrone, testosterone and ... and weight). They found that two of these sex hormones (estradiol and estrone, called together ...

Why a common treatment for prostate cancer ultimately fails

... that the androgen receptor, through which male hormones like testosterone work, is much more versatile ... therapy, physicians blunt the effects of male hormones like testosterone to bring the disease in the ... is insensitive to the receptor. The effects of hormones depend on the location. "We found that the ...

Structural biology spin-out tackles major diseases

... and diabetes. Under normal circumstances hormones of the type known as cytokine hormones - growth hormone for example - circulate in the ... to make other useful pairings between therapeutic hormones and protective receptor domains (the binding ...

Songbirds may hold key to advances in treatment of brain degeneration

... "In 150-odd years, we've learned a lot about how hormones work, and the science we do here is a modest and ... in the gonads, it is now known that some hormones are being made in the synapses of the brain. ... Saldanha says. "We may be able to understand how hormones regulate the process of learning and memory, ...

High hormone levels in seabird chicks prepare them to kill their siblings

... to high levels of testosterone and other male hormones found in the hatchlings. The study appears in ... from 15 hatchlings in one-egg nests. Then, blood hormones were analyzed by researchers at the University of ... one-two hormonal punch, raising their aggression hormones even higher when they actually have a nest mate. ...

Disabling mouse enzyme increases fertility

... adjust for the right amount of key reproductive hormones such as estrogen and testosterone, we may someday ... Sugars are the most common addition to hormones and other proteins after they have been assembled ... producing periodic peaks in other reproductive hormones and triggering regular events such as the ...

New study finds anticipating a laugh reduces our stress hormones

... had surprising and significant effects. Two hormones beta-endorphins (the family of chemicals that ... in the anticipatory phase decreased for stress hormones cortisol, epinephrine and dopac in the ... progressive pattern of the decrease for the three hormones through the event. As a result, the ...

Testosterone replacement theraphy beneficial in men 60 and older

... three million are at risk. Gender-based hormones and age are thought to be major factors behind ... are known to be at risk. Low levels of gender hormones can lead to diminished bone mineral density (BMD; ... replacement. He added, The effects of sex hormones on markers of bone formation are complex, but ...

High levels of estrogen associated with breast cancer recurrence

... studies that have looked at the link between sex hormones in the blood and cancer recurrence, she said. ... like tamoxifen may not completely wipe out the hormones effect in women who have high levels of estrogen. ... womens blood for concentrations of the steroid hormones estradiol (the primary human estrogen) and ...

Taking the fight against cancer to heart

... BETHESDA, Md. (Feb. 25, 2008) hormones produced by the heart eliminated human pancreatic ... than three-quarters of the mice treated with the hormones and eliminated human breast cancer in two-thirds ... Society. The discovery of cardiac hormones For more than 350 years, scientists and ...

An 'attractive' man-machine interface

... cellular signaling systems normally used by hormones or other natural molecules. This technology ... a near-instantaneous on-off switch, unlike hormones and chemicals that can take minutes to hours to ... parts of your body, or a pacemaker for producing hormones or insulin, Ingber adds. If youre a diabetic, you ...

Chemicals used as fire retardants could be harmful, UC-Riverside researchers say

... mechanisms that are responsible for releasing hormones in the body. Moreover, their work has shown that ... and memory, and for regulating the release of hormones in the body. Long-term exposures to PBDEs may ... system, which regulates the secretion of hormones such as those responsible for body water ...

Plastics chemical retards growth, function of adult reproductive cells

... properly you're not going to get proper amounts of these hormones." Such hormones are essential for reproduction, she said, "but they're also required for ... 48 hours of exposure to BPA, Peretz said. Reductions in three key steroid hormones progesterone, testosterone and estradiol were also seen after 120 hours ...

Hormone clue to root growth

... with water, nutrients and anchorage. Understanding how roots grow and how hormones control that growth is crucial to improving crop yields, which will be ... for expansion rates in the other tissues. "Understanding precisely how hormones regulate plant growth is one of the key areas of fundamental plant biology ...

Targeting helpers of heat shock proteins could help treat cancer, cardiovascular disease

... how heat shock protein 90 gets steroid receptors into shape to use hormones like estrogen and testosterone could lead to targeted therapies for ... for men of any age. "So how do you get both things? Receptors of these hormones need Hsp90 so we need to understand the intricacies of the Hsp90 ...

International team finds key gene that allows plants to survive drought

... stresses like drought, freezing and heat. "Plants have stress hormones that they produce naturally and that signal adverse conditions and help ... systems biology at the University of Toronto. "If we can control these hormones we should be able to protect crops from adverse environmental conditions ...

Science returns to the Capitol Hill spotlight at March 24 exhibition

... topics such as: Environment: climate change, reproductive hormones in the environment, environmental implications for nanotechnology, water ... Science Society of America/Soil Science Society of America, Reproductive hormones in the Environment, Francis X. M. Casey, North Dakota State University ...

Stress may hasten the growth of melanoma tumors

... scientists in the last two years that looked for links between stress hormones and diseases like cancer, is published in the the journal Brain, Behavior ... not only that different forms of cancer react differently to stress hormones but also that those reactions can vary within a specific form of the ...

The Evolution of Human Aggression: Feb. 25-27 conference

... on conflict and reconciliation among great apes, violence and warfare, hormones and human aggression, and domestic violence; a scientific poster session; ... 9 a.m. Friday, Feb. 27, Officers Club, Fort Douglas Panel discussion, hormones and Human Dominance and Aggression. Among the panelists is Aaron Sell, of ...

Research uncovers new steps on pathway to enlarged heart

... driving myocardial hypertrophy, such as elevated levels of catecholamine hormones (i.e. adrenaline), activate the Myocyte Enhancer Factor (MEF) proteins. ... role in organizing signaling complexes in response to catecholamine hormones and transmitted signals within cells. The researchers found that ...

'Biological clock' genes control plant growth

... Institute. "We now know that the expression of certain genes and hormones at night and just before dawn is important for plant growth," Mockler ... it would glow, on and off, as the genes began functioning to create the hormones responsible for growth in the dark of night. The research program also ...

Cortisol and fatty liver: Researchers find cause of severe metabolic disorders

... in the liver. However, scientists knew that the body's own glucocorticoid hormones such as cortisol promote the development of fatty liver. This can be ... have now published the mechanism by which the body's own glucocorticoid hormones contribute to this disruption of the lipid metabolism. The researchers ...

New study shows compounds from soy affect brain and reproductive development

... by exposure to phytoestrogens or plant-produced chemicals that mimic hormones during development. Specifically, the study finds that the compounds ... ovulation. "That part of the brain," Patisaul says, "is organized by hormones during development which is the neonatal stage for rats and during ...

Plant steroids offer new paradigm for how hormones work

... key links in the steroid signaling chain. Understanding how these plant hormones activate genes could lead not only to enhanced harvests but also to new ... of Science magazine. Plant steroids, called brassinosteroids, are key hormones throughout the plant kingdom. They regulate many aspects of growth and ...

Scientists find stem cells for the first time in the pituitary

... about the size of a pea, sits at the base of the brain, where it secretes hormones that regulate various processes throughout the body. In mice, the gland ... respond differently to changing body conditions. Dr. Enikolopov notes that hormones strongly influence human neuropsychiatric phenomena, including stress and ...

Nutrition research unveiled this week shows pistachios are smart for the heart

... pressure in people with diabetes and the effects of pistachios on satiety hormones and hormones that regulate blood sugar. Pistachios Pack Powerful Nutrition In ...
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