Patients with serious kidney disorder produce natriuretic peptides at above average rates
... acids. They are secreted by the heart and act as hormones causing expanded vascular tube size, increased excretion of urine, and abnormal secretions of sodium into urine. One of the natriuretic peptides, C-type natriuretic peptide (CNP), has been found in increased levels in the blood of patients with rena...National study halted since health risks exceed benefits in postmenopausal women on estrogen
...enefits of healthy postmenopausal women taking the hormones estrogen and progestin. That's because after five years of data collection, the study clearly showed the risks outweighed the benefits, scientists said. Taking the combination appears to boost the chance of developing breast cancer somewhat and does ...SFVAMC study may revive old approach to high blood pressure therapy
...oughout the body create the response to the stress hormones adrenalin and noradrenalin. The experimental mice had 8 to 12 percent lower blood pressure than normal mice. This suggested that A/C receptors can increase blood pressure, and that blocking them alone might reduce blood pressure, Simpson said. Inter......he researchers think this is because mood-altering hormones in semen are absorbed through the vagina. They say they have ruled out other explanations. "I want to make it clear that we are not advocating that people abstain from using condoms," says Gordon Gallup, the psychologist at the State University of Ne...University of Toronto researchers get to the heart of heart failure
...tant cardiovascular function by generating certain hormones that cause blood vessels to constrict, which helps... on the heart by preventing the actions of peptide hormones generated by ACE 1, says Backx, a heart disease specialist. "This research solidifies the view that ...Anemia complicates heart failure, should be new focus, doctor says
...ia on patients' physical activity and fatigue, how hormones affect anemia and quality-of-life issues. "This focus on anemia is new, and it is definitely worth investigating because we believe it may make a difference with many congestive heart failure patients, and results so far have been encouraging," the p...New depression studies reveal persistent serotonin system abnormality in patients
...d changes in levels of prolactin and several other hormones released by the pituitary gland at the base of the brain in response to the serotonin challenge test. Their goal was to learn whether the abnormality was always present or detectable only when patients were depressed and disappeared like fevers do wh...Snowmobiles can stress wildlife
...search shows that snowmobiles can raise the stress hormones of animals in national parks. "Elk and wolves show physiological stress responses to snowmobiles and that the response is stronger when the intensity of snowmobile use is heavier," says Scott Creel of Montana State University in Bozeman, who presents...Stanford researchers create diabetic fruit flies in lab
...d-sugar levels are low. Together, the two opposing hormones keep human blood-sugar levels steady, and may do the same in flies. Rulifson called these similarities between fly and human hormonal systems "the tip of the iceberg." He said there is enough similarity to suspect his diabetic flies will be good mode...Children in lower socio-economic backgrounds at high risk for type-2 diabetes
...se (i.e., fat) tissue, which is one of several new hormones involved in obesity and is related to susceptibility to non-insulin dependent (type 2) diabetes). A new study offers the first findings regarding adiponectin levels in children and their correlations to measures such as body composition and fitness a...New indicators for predicting hypertension in African-American males
...athetic branches. Simply, the stress or relaxation hormones are responsible for maintaining heart rate, blood pressure, and breathing rates to a given fight or flight challenge. Sympathetic nervous system activity may be representative of stress, while the parasympathetic branch may be defined as the ability ...Angry young men prone to premature heart disease
...unds occurring naturally in the body that serve as hormones or transmitters of messages. These substances, such as adrenaline, prepare the body to meet emergencies such as cold, fatigue and shock, by constricting blood vessels and forcing the heart to work harder to supply the body with fresh blood....Male starlings sing a song of reproductive fitness
...y suggested that the physiological factors such as hormones that help male birds look like ideal mates might actually at the same time be suppressing their immune systems, making it too risky for any but the healthiest male birds to overindulge in production of sexual finery such as plumage or song. Choosy fe...High levels of sex hormones doubles risk for breast cancer in postmenopausal women
...r. Hormones in their blood were compared with the hormones of 1,765 women who were the same age when blood wa...onducts research on the relationship of endogenous hormones to breast cancer development. Each of the nine cohorts in which the association of sex hormones wit...Popular weed killer demasculinizes frogs, disrupts their sexual development
...n of the enzyme aromatase, which converts androgen hormones to estrogen hormones. Extrapolating these results ...ize male frogs by promoting the conversion of male hormones to female hormones. The lowered androgens would interfere with voice box development, while increase...Unique social system found in famous Tsavo lions
... be especially aggressive, and high levels of male hormones may simultaneously underlie this aggression, their unique social system, and manelessness, Patterson says. To test this theory, Patterson and Kaystogether with Dr. Samuel Kasiki of the Kenya Wildlife Service and Dr. Julie Thornton of the University ...Tucson chemist wins national award for studies of life molecules
... scientific society for his discoveries in linking hormones and other life molecules to their affects not only... of chemistry, is peptides small proteins such as hormones and neurotransmitters that carry messages from one cell or part of the body to another. Were interes...Chemical messenger controls bone growth in embryos, study finds
...ge in the cell when activated by molecules such as hormones or growth factors. Scientists have known for 10 years that FGF receptors are important for skeletal development. For example, mutations in FGF receptor 3 cause achondroplasia, the most common form of dwarfism in humans. But they did not know which of...Unwanted HRT playing havoc with songbirds
...igators and fish were being feminised by synthetic hormones leaking into the environment. Now nightingales, skylarks and even the humble sparrow seem to be at risk. Researchers have found that such chemicals interfere with songbirds' reproduction. They also alter their brains, making females sing when they s......types of stem cells in spinal cord injury, how sex hormones affect the developing brain, the effect on gastrointestinal disease of the enteric nervous system (the nervous system that drives the GI system) and its effect on gut diseases, and mechanisms of craniofacial bone growth. In other Experimental...