News tagged with hormone
Skydiving is never plane sailing
Skydivers show the same level of physical stress before every jump whether a first-timer or experienced jumper, say Northumbria researchers.
Psychology & Psychiatry
May 17, 2013 |
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Women's reproductive ability may be related to immune system status
New research indicates that women's reproductive function may be tied to their immune status. Previous studies have found this association in human males, but not females.
Obstetrics & gynaecology
May 17, 2013 |
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Acne pill benefits outweigh blood clot risk: EU agency
Europe's medicines watchdog said Friday the benefits of acne drug Diane-35, also widely used as a contraceptive, outweigh the risk of developing blood clots in the veins—when correctly prescribed.
Medications
May 17, 2013 |
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Effects of stress on brain cells offer clues to new anti-depressant drugs
Research from King's College London reveals the detailed mechanism behind how stress hormones reduce the number of new brain cells - a process considered to be linked to depression. The researchers identified a key protein ...
Neuroscience
May 06, 2013 |
3.9 / 5 (7) |
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Explainer: What is diabetes?
To keep your body functioning, glucose must always be present in your blood. It's as important as oxygen in the air you breathe. The brain can only function for a few minutes without either before it stops ...
Diabetes
May 13, 2013 |
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Estrogen levels tied to risk for sudden cardiac death in study
(HealthDay)—Higher levels of the hormone estrogen are associated with an increased risk of sudden cardiac death in men and women, a new study suggests.
Cardiology
May 11, 2013 |
4.5 / 5 (2) |
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Free testosterone drives cancer aggressiveness, study finds
What is the reason for the widely reported fact that men are more likely than women to die of cancer? New evidence from population studies suggests that free testosterone could be a key driver of cancer aggressiveness in ...
Cancer
May 14, 2013 |
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Women altering menstruation cycles in large numbers, study shows
A surprisingly large number of women 18 or older choose to delay or skip monthly menstruation by deviating from the instructions of birth-control pills and other hormonal contraceptives, a team of University of Oregon researchers ...
Health
May 09, 2013 |
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Making cancer less cancerous: Blocking a single gene renders tumors less aggressive
Researchers at Johns Hopkins have identified a gene that, when repressed in tumor cells, puts a halt to cell growth and a range of processes needed for tumors to enlarge and spread to distant sites. The researchers hope that ...
Cancer
May 02, 2013 |
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Is this peptide a key to happiness?
(Medical Xpress)—What makes us happy? Family? Money? Love? How about a peptide? The neurochemical changes underlying human emotions and social behavior are largely unknown. Now though, for the first time in humans, scientists ...
Psychology & Psychiatry
Mar 07, 2013 |
4.9 / 5 (8) |
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Buying testosterone supplements online can be risky
(HealthDay)—If you're a man suffering from low energy or libido, the drug industry is eager to help. So-called "Low T"—low testosterone—has become a common catch phrase in TV commercials, and sales ...
Health
May 07, 2013 |
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Hormone affects distance men keep from unknown women they find attractive
Men in committed relationships choose to keep a greater distance between themselves and an unknown woman they find attractive when given the hormone oxytocin, according to new research in the November 14 issue of The Journal of ...
Neuroscience
Nov 13, 2012 |
3.8 / 5 (9) |
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Early stress may sensitize girls' brains for later anxiety
High levels of family stress in infancy are linked to differences in everyday brain function and anxiety in teenage girls, according to new results of a long-running population study by University of Wisconsin-Madison scientists.
Neuroscience
Nov 11, 2012 |
4.5 / 5 (4) |
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Mouse research links adolescent stress and severe adult mental illness
Working with mice, Johns Hopkins researchers have established a link between elevated levels of a stress hormone in adolescence—a critical time for brain development—and genetic changes that, in young adulthood, cause ...
Neuroscience
Jan 17, 2013 |
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Flame retardants may be toxic to children
Chemicals called polybrominated diphenyl ethers (PBDEs) have been used for decades to reduce fires in everyday products such as baby strollers, carpeting and electronics. A new study to be presented on Monday, May 6, at the ...
Pediatrics
May 06, 2013 |
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Hormone
Hormones (from Greek ὁρμή - "impetus") are chemicals released by cells that affect cells in other parts of the body. Only a small amount of hormone is required to alter cell metabolism. It is essentially a chemical messenger that transports a signal from one cell to another. All multicellular organisms produce hormones; plant hormones are also called phytohormones. Hormones in animals are often transported in the blood. Cells respond to a hormone when they express a specific receptor for that hormone. The hormone binds to the receptor protein, resulting in the activation of a signal transduction mechanism that ultimately leads to cell type-specific responses.
Endocrine hormone molecules are secreted (released) directly into the bloodstream, while exocrine hormones (or ectohormones) are secreted directly into a duct, and from the duct they either flow into the bloodstream or they flow from cell to cell by diffusion in a process known as paracrine signalling.
For more information about Hormone, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
