Tag: "hormones" at biology news
Protein is key for digestive function of the pancreas
...t famous role of the pancreas is the production of hormones
like insulin that regulate blood sugar, the pancre...ts called zymogen granules. Upon stimulation with hormones
like cholecystokinin (CCK), zymogen granules are emptied via a process called exocytosis into ducts ...
APS awards more than $140,000 to minority students of physiology
...ls formulate responses to external signals such as hormones
or therapeutic agents. Stefanie Raymond-Whish Northern Arizona University Ms. Raymond-Whish investigates the effects of environmentally relevant doses of uranium on the female reproductive system. Studies conducted in her lab suggest that urani...
OHSU-VAMC study sheds light on estrogen's benefit for MS
...ientists have long been interested in the role sex hormones
play in the body's ability to fight autoimmune diseases like MS, particularly since these disorders occur more frequently in females than in males. But the link between pregnancy and MS has been hotly debated. In 1998, scientists in France went a ste...
Two warbler species find the West isn't big enough for both of them
...ially higher levels of androgens specifically the hormones
testosterone and dihydrotestosterone have given m...stored at minus-20 degrees Celsius to preserve the hormones
until it could be returned to the UW for analysis. The scientists found substantially higher androg...
Blood pressure hormone may inhibit growth of lung cancer
... a 65-year-old male. None of the other angiotensin hormones
tested slowed the growth of these lung cancer cells. Tallant and Gallagher said their studies may point the way to a more successful treatment for lung cancer, still one of the most deadly forms of cancer, with only 13 percent of patients alive afte...
Hunt for a new plant hormone points to carotenoids
...ogists therefore believe that there are more plant hormones
out there waiting to be discovered. Recent results from work on pea, petunia, and the small weed Arabidopsis have suggested the existence of one such novel plant hormone. The main role of this hormone is to regulate the degree of shoot branching. The...
Researchers identify gene for a primary form of sudden infant death sydrome (SIDS)
...Females appear to be normal and have normal female hormones
in blood and urine. Despite these differences, male and female infants with SIDDT died suddenly at the same age. The researchers analyzed the DNA from four of these infants, along with their parents, siblings, and extended family members. Using Af...
Was Atkins right?
...ation function (Glutathione-S-Transferase), plasma hormones
(insulin, cortisol and leptine)] and liver and kidney histopathology were investigated. Calcium balance was also assessed over four months after this protocol. Results This study sought to estimate the consequences of a long-term intake o...
When male fish hum, females swim in, thanks to hormones, adaptable hearing
...y Andrew Bass, found that a spike in levels of the hormones
testosterone and estradiol (an estrogen) triggers ...pond appropriately if they can't hear it. Steroid hormones
appear to provide a key molecule that leads to shifts in the hearing sensitivity of females." The m...
Hormone helps fish to mate, may affect human hearing
...spond appropriately if they can't hear it. Steroid hormones
appear to provide a key molecule that leads to shi... in other laboratories also suggested that steroid hormones
may play a role in causing some of the reported changes in hearing sensitivity of human females at d...
Most Americans not sure about the sources of high cholesterol
...portant in helping to form cell membranes, steroid hormones
and bile acids. There are two sources of cholesterol: cholesterol comes from the food you eat and is produced naturally in the body. However, over time, excess LDL (or bad) cholesterol in the blood can build up on the inner walls of the arteries t...
Secret behind hard exoskeletons, spreading wings revealed
...ous study, the genetic structure of one of the key hormones
involved in the fruit fly's development, bursicon,...it, information that people had about other insect hormones
15 years ago, so we are quite excited." All insects must shed their old outer skin or cuticle period...
JCI table of contents, 1 July 2004
...within the organism. The fat cells release several hormones
and cytokines, which appear to play a role in controlling this response. One of these fat cell-derived proteins, resistin, is thought to play a role in this by effecting overall insulin response. Two groups with papers that are appearing online first...
Infusion of two peptides acts to accelerate appetite satisfaction
...hip is expressed in coordination where circulating hormones
convey information about food intake and appetite ...ty"). Both peptides are classical gastrointestinal hormones
that are released into the circulation in response to meal consumption. Earlier research has docume...
Basic RNA enzyme research promises single-molecule biosensors
...Such sensors could be designed to detect important hormones
like leptin, which is involved in fat metabolism. With such a tool, "you could detect how a single cell makes leptin and ask how much the cell makes when the environment changes," he said. In another project, funded by NASA, the researchers hope to d...
Carnegie Mellon U. imaging study reveals sex-based differences that persist as mice enter adulthood
...e results, in press with NeuroImage, show that sex hormones
alter the development of certain brain structures ...ide a much truer representation of how circulating hormones
affect brain structures than could be derived from human imaging for several reasons, according to A...
Tulane opens doors to discovery
...s research into the interaction between cancer and hormones
on Thursday, September 30. On the following afternoon, 1998 Nobel Prize winner Ignarro will discuss his research into nitric oxide as a signaling molecule in the cardiovascular system. The full, three-day "Doors to Discovery" program requires a re...
New study confirms process leading to disorder causing male characteristics in women
...ith male characteristics. Men and women both have hormones
expressing male and female characteristics. Yet, ... persistent and excessive secretion of luteinizing hormones
(LH), one of two glycoprotein hormones
that stimulate the final ripening of the follicles and the se...
Maybe not so sweet, after all
...ned beverage. Lower levels of insulin and leptin, hormones
that convey information to the brain about the bod...tose consumption results in a metabolic profile of hormones
which would be predicted to increase food intake, thereby contributing to obesity in susceptible pop...
Researchers establish first molecular link between eating and aging
...trols satiety, Guarente speculates that by putting hormones
into the bloodstream, fat cells also tell the body how fast to age. "Conversely, fewer fat cells tell the body that it's time to hunker down for survival. This means that evolutionarily speaking, fat plays a very important role," he said. We know...
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