Hormones

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 supervisor of the studies, says the implication of this work is quite significant. "The research...

Alcohol consumption disrupts breastfeeding hormones

Despite age-old claims advising breastfeeding moms that alcoholic beverages can improve their nursing performance, researchers at the Monell Chemical Senses Center report that even moderate doses of alcohol affect the hormones responsible for lactation in a counterproductive manner. "This information is important for women," comments lead author Julie Mennella, PhD, a biopsychologist. "If...

Hormones and growth: The control of body size and developmental growth rate in fruit flies

A pair of research papers published this week report findings that increase our understanding of how an organism's body size is determined and how the speed of its development is controlled. In particular, the work sheds light on the molecular and cellular pathways that act to convey information about a growing organism's size, as well as on pathways that use that information to correctly time cr...

Hyena mothers give their cubs a helpful dose of hormones

Scientists have discovered that a dominant hyena puts her cubs on the road to success before they are born by passing on high levels of certain hormones that make her budding young leaders more aggressive and sexually advanced. The report, published in the April 27 issue of Nature, is the first study in mammals to demonstrate a relationship between a female's social rank and her ability to...

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 challenged by researchers at the Salk Institute for Biological Studies. They show that each hormone a...

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Gender hormones may lend to social disorder therapies

Social disorders such as autism constitute one area where those differences come to the fore: around 80 percent of all autism cases, for example, occur in men. Social play behaviors also differ greatly between the sexes - just about everyone agrees that young boys play "rougher" t...

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Hormones at Medicine News

Hormones Linked To Migraines

Irregularities in hormones produced by the hypothalamus, the area of the brain that regulates such basic functions as hunger and body temperature, may underlie chronic migraines. The findings provide hope for the 2% to 3% of the general population who suffer from the debilitating headaches, since drugs that regulate these hormones could prevent or reduce the severity of the headaches, according t...

Breast feeding can alter hormones

Being nearby breastfeeding mothers can modify the length of other women's menstrual cycles, say researchers.Chemicals called pheromones given off by the mother - or their infants - made the cycles significantly longer or shorter, claims Dr.Mclintock lead researcher, from Ohio University.// She suggests this is due to the body attempting to maximise its chances of fertility as part of a...

Hormones do not guard against heart failure

The previous research evidence that HRT could reduce risk of heart attack in post menopausal women has been reversed by a recent study of 1000 women of ages 50 to 69 conducted by the University of Manchester in the United Kingdom.The aim of the study was to determine whether a combination// of oestrogen and progesterone reduced the risk of future heart attack in post menopausal women who had alre...

Low-Dose Hormones Help the Bones

Osteoporosis is a major cause of disability in older women. Estrogen therapy is often prescribed to prevent osteoporosis. However, many women are reluctant// to take hormone therapy because of the increased risk of breast cancer, heart disease, stroke and deep vein blood clots. Now, new research finds a lower dosage of estrogen increases bone density in women without possibly causing the problems...

Hormones A Predictor Of Heart Problems

In a recent study, researchers have found that certain hormones in the body may yield a new method of predicting the risk of cardiovascular // events and death in people with no symptoms. Researchers found excess risk was apparent at levels well below the current standards used to diagnose heart failure. Investigators studied 3,346 people without heart failure. They tested the participan...

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Hormones at Medicine Products

Cortisol EIA Hypertension / Cardiac Evaluation, Cardiovascular 012-MDKCO1 Stress Hormones

Description:The test kit is an enzyme immunometric assay (EIA) in the microplate format with a liquid phaseincubation, designed for the quantitative measurement of cortisol in serum. The microplate is coatedwith anti-rabbit antibodies.Calibrators and patient samples are added to anti-rabbit antibody-coated wells, along with rabbit anticortisolantibodies and ligand-labeled cortisol. During the 60-...
Company:ALPCO Diagnostics

Estradiol EIA Reproductive Markers 020-DR-2693 Hormones

Description:The Estradiol ELISA kit is based on the competition principle and the microplate separation. An unknown amount ofEstradiol present in the sample and a fixed amount of Estradiol conjugated with horseradish peroxidase compete for thebinding sites of a polyclonal Estradiol antiserum coated onto the wells. After two hours incubation the microtiterplate iswashed to stop the competition reacti...
Company:ALPCO Diagnostics

17-OH Progesterone EIA Reproductive Markers 020-DR-1292 Reproductive Hormones

Description:The steroid 17a Hydroxyprogesterone (17aOHP) is produced by both the adrenal cortex and gonads. Eventhough 17aOHP has relatively little progestational activity, it is of intense clinical interest because it is theimmediate precursor to 11-desoxycortisol (Cpd-S). Because Cpd-S is produced by 21-hydroxylation of 17aOHP,measurement of 17aOHP is a useful indirect indicator of 21-hydroxylase...
Company:ALPCO Diagnostics

Free Estriol (E3) RIA Reproductive Hormones 024-IDC-1000

Description:Free Estriol (E3) RIA Reproductive Hormones 024-IDC-1000...
Company:ALPCO Diagnostics

Free Estriol (E3) RIA Reproductive Hormones 024-IDC-2000

Description:Free Estriol (E3) RIA Reproductive Hormones 024-IDC-2000...
Company:ALPCO Diagnostics

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Hormones at Medicine Technology

Arterial Plaque Significantly Reduced in Women Age 50-59 Taking Hormones, Says New Analysis of Women's Health Initiative Data

Fourth Study to Indicate that Early Use of Estrogen May beCardio-Protective PHOENIX, June 20, 2007 /PRNewswire-USNewswire/ -- A new analysisof Women's Health Initiative data published in the New EnglandJournal of Medicine, shows significant reduction in calcifiedplaque for women aged 50 to 59 using hormone therapy (HT) comparedwith women taking a placebo. This is the first time therelati...