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Drugs found to both prevent and treat Alzheimer's disease in mice

Researchers at USC have found that a class of pharmaceuticals can both prevent and treat Alzheimer's Disease in mice.

Alzheimer's disease & dementia created 4 hours ago | popularity 5 / 5 (1) | comments 0 | with audio podcast

72 percent of pregnant women experience constipation and other bowel problems

Nearly three out of four pregnant women experience constipation, diarrhea or other bowel disorders during their pregnancies, a Loyola University Medical Center study has found.

Obstetrics & gynaecology created May 20, 2013 | popularity not rated yet | comments 0

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 created May 17, 2013 | popularity not rated yet | comments 0 | with audio podcast

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 created May 17, 2013 | popularity not rated yet | comments 0 | with audio podcast

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 created May 17, 2013 | popularity not rated yet | comments 0

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 created May 14, 2013 | popularity 5 / 5 (1) | comments 0

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 created May 13, 2013 | popularity 5 / 5 (1) | comments 0

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 created May 11, 2013 | popularity 4.5 / 5 (2) | comments 0

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 created May 09, 2013 | popularity 5 / 5 (1) | comments 0 | with audio podcast

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 created May 07, 2013 | popularity not rated yet | comments 0

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 created May 06, 2013 | popularity 3.9 / 5 (7) | comments 0 | with audio podcast

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 created May 06, 2013 | popularity 5 / 5 (1) | comments 0

ECE: Gene variants linked to reduced male fertility

(HealthDay)—Particular gene variants of follicle stimulating hormone (FSH) and its receptor are associated with significantly reduced fertility in men, according to a study presented at the annual European ...

Genetics created May 03, 2013 | popularity 5 / 5 (1) | comments 0

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 created May 02, 2013 | popularity 4.7 / 5 (10) | comments 0 | with audio podcast

Genetic and clinical factors best to predict late recurrence in estrogen receptor POS breast cancer

A new analysis has provided a comprehensive comparison of scores designed to predict which women with oestrogen-receptor positive breast cancer are at high risk of recurrence beyond five years after diagnosis, and may benefit ...

Cancer created May 02, 2013 | popularity not rated yet | comments 0

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.

Related topics: breast cancer , women , plants , estrogen , protein