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Hormones in Biological News

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

MADISON University of Wisconsin-Madison researchers have solved the mystery surrounding a "rogue protein" that plays a role in the release of neurotransmitters and hormones in the brain. The scientists found abundant amounts of the puzzling protein whose main location and function were unkno...

Food can affect a cell in the same way hormones do

Leuven, Belgium VIB researchers connected to the Katholieke Universiteit Leuven have discovered an important new mechanism with which cells can detect nutrients. This happens in the same way − and with the same effects as when cells receive a message from a hormone. This finding can teach ...

Sex hormones link to heart risk

Men are more prone to and likely to die of - heart disease compared with women of a similar age and sex hormones are to blame, according to a new University of Leicester led study The findings of a study by Dr Maciej Tomaszewski, New Blood Lecturer in Cardiovascular Medicine in the Department...

Plant steroids offer new paradigm for how hormones work

Stanford, CASteroids bulk up plants just as they do human athletes, but the playbook of molecular signals that tell the genes to boost growth and development in plant cells is far more complicated than in human and animal cells. A new study by plant biologists at the Carnegie Institution used an e...

Scientists uncover how hormones achieve their effects

New insights into the cellular signal chain through which pheromones stimulate mating in yeast have been gained by scientists at the European Molecular Biology Laboratory (EMBL). Similar signal chains are found in humans, where they are involved in many important processes such as the differentiat...

Children distressed by family fighting have higher stress hormones

Children who become very upset when their parents fight are more likely to develop psychological problems. But little is known about what happens beyond these behavioral reactions in terms of children's biological responses. A new study has found that children who are very distressed when their pa...

New study finds anticipating a laugh reduces our stress hormones

SAN DIEGO, CA In 2006 researchers investigating the interaction between the brain, behavior, and the immune system found that simply anticipating a mirthful laughter experience boosted health-protecting hormones. Now, two years later, the same researchers have found that the anticipation of a posi...

Stress hormones may play new role in speeding up cancer growth

New research here suggests that hormones produced as during periods of stress may increase the growth rate of a particularly nasty kind of cancer. The study showed that an increase in norepinephrine, a stress hormone, can stimulate tumor cells to produce two compounds. These compounds can break d...

Computational analysis shows that plant hormones often go it alone

Unlike the Three Musketeers who lived by the motto "All for one, one for all," plant hormones prefer to do their own thing. For years, debate swirled around whether pathways activated by growth-regulating plant hormones converge on a central growth regulatory module. Now, the cooperation model is c...

Female sex hormones play a vital role in defense against sexually transmitted diseases

Two McMaster University studies, to be published in the Journal of Virology, show that sex hormones have a profound effect on susceptibility of female mice to the herpes simplex virus, type 2 (HSV-2 ), one of the most common sexually transmitted diseases. Charu Kaushic, assistant professor and s...

Grant supports LSUHSC research on how like cell receptor systems determine very different functions

...l Sciences to support his research on the mechanism by which seemingly similar cell receptor systems determine quite different functions influenced by hormones and drugs. "We are interested in how the generic ERK signaling pathway confers specific physiological outcomes such as proliferation, differentiati...

Short stressful events may improve working memory

... Specifically, they demonstrated that acute stress increases transmission of the neurotransmitter glutamate and improves working memory. "Stress hormones have both protective and damaging effects on the body," said Zhen Yan, professor of physiology and biophysics at UB and senior author on the study. "T...

A 'heart healthy' diet and ongoing, moderate physical activity may protect against cognitive decline

...us Activity May Increase Risk of Cognitive Impairment Long-term strenuous physical activity has been shown to decrease lifetime exposure to ovarian hormones in women and has been found to play a protective role against breast cancer. However reduction in ovarian hormone exposure has been associated with in...

2 reproductive factors are important predictors of death from ovarian cancer

...sessment Program at the Fox Chase Cancer Center in Philadelphia, said these results raise the question "can the amount and/or duration of reproductive hormones to which women are exposed affect the aggressiveness of ovarian cancer and/or its resistance to treatment, and if so, by what mechanism?" "The si...

Plastics chemical retards growth, function of adult reproductive cells

...ow 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 he...r 48 hours of exposure to BPA, Peretz said. Reductions in three key steroid hormones progesterone, testosterone and estradiol were also seen after 120 hours o...

Hormone clue to root growth

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

Two dietary oils, two sets of benefits for older women with diabetes

... circumference, waist-to-hip ratio and skinfold thickness measures of body fat, Belury noted. The CLA also did not appear to affect the variety of hormones involved in fat burning. However, safflower oil increased a hormone called adiponectin. Increasing this hormone may have instilled an improved ability...

Ovarian transplantation: First baby is born after a new technique

...fficient vascularisation of the transplanted tissue. "In order for a woman to become pregnant, the ovaries need to be responsive to the action of hormones that cause them to release eggs each month," he explained. "If the blood supply to the ovaries is insufficient, this will not happen, even though the ...

DuoCort: New chronotherapy for adrenal insufficiency

...c condition, they require this life-saving therapy throughout their lives. Treatment of adrenal insufficiency involves replacing, or substituting, the hormones that the adrenal glands are not making. Cortisol is replaced using hydrocortisone, the synthetic form of cortisol, and sometimes with other corticoste...

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

...ssecting how heat shock protein 90 gets steroid receptors into shape to use hormones like estrogen and testosterone could lead to targeted therapies for hormone...same 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 machinery,...

Stress puts double whammy on reproductive system, fertility

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

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 no...in turn, reduces the availability of vital thyroid hormones in the parts of the brain that control learning, m...

Biologists devise unifying framework to explain evolutionary puzzles

...nctional dynamics evolve. Functional dynamics refers to the processes that make an organism work, such as the physiological processes of the body, the hormones and cells, and the behavior of individuals. Evolution looks at how organisms change over time. "These two approaches actually complement each other an...

Biologists consider unifying framework to explain evolutionary puzzles

...nctional dynamics evolve. Functional dynamics refers to the processes that make an organism work, such as the physiological processes of the body, the hormones and cells, and the behavior of individuals. Evolution looks at how organisms change over time. "These two approaches actually complement each other an...

Simple drug treatment may prevent nicotine-induced SIDS: Study

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

Shatter-resistant brassicas

...ent, and these separate to open the pod. It is already known that proper plant development, such as organ growth and patterning, requires specific hormones to accumulate in specific regions. This is the first time that removal of a hormone has been found to be important for cell fate and growth. Oilsee...

Five outstanding young gastroenterologists receive AGA Foundation 2009 Research Scholars Award

... The 2009 AGA Research Scholars are: Gregory Austin, MD, MPH, University of Colorado, Denver: The effect of macronutrients on gastrointestinal hormones and gastric emptying in obesity Michele Battle, PhD, Medical College of Wisconsin, Milwaukee: Determining the role that GATAs play in intestinal deve...

100 reasons to change the way we think about genetics

...ir descendants are born with bristly outgrowths on their eyes. Another study found that exposing a pregnant rat to a chemical that alters reproductive hormones leads to generations of sick offspring. Yet another study shows higher rates of heart disease and diabetes in the children and grandchildren of people...

Can happiness be inherited?

... his article in the latest issue of Bioscience Hypotheses , Dr Alberto Halabe Bucay of Research Center Halabe and Darwich, Mexico, suggested that the hormones and chemicals resulting from happiness, depression and other mental states can affect our eggs and sperm, resulting in lasting changes in our children...

MIT’s implantable device offers continuous cancer monitoring

...he believes an implant to test for pH levels could be commercially available in a few years, followed by devices to test for complex chemicals such as hormones and drugs. ...

System that regulates blood pressure is amiss in some healthy, young blacks

... fluid if it's too low and to get rid of salt when it's high. But when MCG researchers looked at the system's activity by measuring levels of the hormones it uses to help regulate sodium excretion, the system which worked essentially perfectly in healthy white adolescents appeared dysfunctional in a si...

International team finds key gene that allows plants to survive drought

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

Experts lay to rest long-held misconceptions about high fructose corn syrup at ILSI-USDA workshop

...und there is little evidence that high fructose corn syrup and sugar (or sucrose) have differing effects on satiety, overall energy balance, metabolic hormones or biochemical metabolites such as triglycerides and uric acid all suggesting no unique causal role for high fructose corn syrup in obesity. Accor...

Translating the conversation between the brain and blood vessels

... the Journal of Physiology , Journal of Neuroscience and the American Journal of Physiology . Dr. Abboud has helped discover how the brain uses hormones to orchestrate blood flow to different parts of the body. This helped explain how the brain sends blood to the gastrointestinal tract after eating, bu...

Oral contraceptives impair muscle gains in young women

...ces in lean mass gains (OC: 2.12.1% vs. non-OC: 3.53.2% / OC: 1.01.0kg vs. no-OC: 1.61.4kg, p resting/fasting blood concentrations of the anabolic hormones were significantly lower in women taking OC vs. non-OC users throughout the study period. At the same time, plasma concentrations of cortisol (catabo...

Laughter remains good medicine

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

Oral contraceptives impair muscle gains in young women

...ces in lean mass gains (OC: 2.12.1% vs. non-OC: 3.53.2% / OC: 1.01.0kg vs. no-OC: 1.61.4kg, p resting/fasting blood concentrations of the anabolic hormones were significantly lower in women taking OC vs. non-OC users throughout the study period. At the same time, plasma concentrations of cortisol (catabo...

Laughter remains good medicine

...ghter" had surprising and significant effects. Two hormones beta-endorphins (the family of chemicals that el... Chronically released high levels of these stress hormones can be detremential to the immune system. L... 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

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

New medications show promise in treating drug-resistant prostate cancer

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