Tag: "progesterone" at biology news
Ligand Scientists Discover Tissue-Selective Female Hormone Mimics
...intain pregnancy despite the administration of the progesterone
blockermifepristone--confirmed that the Ligand com...eptor that will "turn on" thepositive responses of progesterone
therapy without activating potentiallynegative progestin effects, such as the proliferation of breas...
Maternal hormone progesterone may be a major player in sculpting male brains,UMass researchers suggest
...icates that during pregnancy, the maternal hormone progesterone
mayplay an important role in creating those differ...ains the pregnancy. "Our research demonstratedthat progesterone
from the mother's blood can enter the blood and brain of thefetus," said Wagner. Once it has entered...
Drinking during pregnancy has yet another consequence: premature delivery
...nancy and the process of labor; one is the hormone progesterone
and the other is a hormone-like factor called pros... Researchers already knew that decreased levels of progesterone
as well as increased levels of prostaglandins could induce preterm birth in animals. Researchers di...
Study suggests newer oral contraceptives may be less harmful for women smokers
...a higher androgenic content because of the type of progesterone
hormone used when compared to newer "third-generat... under stress. "Based on our findings, the type of progesterone
should be an important consideration when determining which oral contraceptives to take, especially ...
65 years of women's menstrual cycles detailed
...ausal transition. BIMORA is measuring estrogen and progesterone
from first morning urine samples. To this end, approximately 150 of the Tremin Trust women provide daily urine samples for six months out of every year for five years. "We are so fortunate to be able to preserve and extend this valuable source of in...
Yale scientists identify genetic form of hypertension in pregnant women
...mutation become pregnant, the 100-fold increase in progesterone
b -- a normal hormone of pregnancy -- can also act...tivate careful examination of the possibility that progesterone
is acting to promote increased salt balance in other forms of pregnancy-related hypertension. "These...
Young women with heart disease at risk of 'menstrual angina'
...e is when levels of the sex hormones oestrogen and progesterone
are lowest. The best performance and slowest time to angina pain, of 418 seconds, occurred in mid-cycle, when oestrogen concentrations peak. Sex hormones seem to act as a vasodilator, increasing blood flow through the arteries, say the authors. Th...
Ringling Bros. announces four Asian elephant pregnancies at Center for Elephant Conservation
...phants are receiving weekly blood tests to monitor progesterone
levels, regular physical examinations and ultrasou...in to produce milk in the final month. When their progesterone
levels show low readings, labor is imminent. Upon delivery, the newborn elephant calves are expecte...
With its key role in plant maturation, a newfound gene could yield a novel class of genetically modified crops
...at blocks receptors for hormones like estrogen and progesterone
but its physiological role in higher organisms has remained a mystery. Poethigs work with plants mutant in squint indicates that CyP40 affects secondary characteristics of adult plants, like the shape and biochemical properties of leaves, but not ...
A pill for reversible suppression of periods - a new option
...pounds and collaborating on the next generation of progesterone
receptor antagonists with menstruation suppression potential. These compounds have potential tested for suppressing medical conditions such as endometriosis** and uterine fibroids. Said Dr Brenner: "These new menstrual suppressants are novel in that ...
Women with rare lung disease found to also have high prevalence of meningiomas
...e progesterone. However, studies have found that progesterone
can stimulate growth of meningiomas. Anti-progesti...nce of meningiomas may be a result of both LAM and progesterone
therapy," said Joel Moss, M.D., chief of NHLBIs Pulmonary-Critical Care Medicine Branch and lead inv...
Estrogen may protect against cocaine-induced brain dysfunction
...ollicular phase, when estrogen levels are high and progesterone
levels are low, cocaine did not alter the amount o...en during their luteal menstrual cycle phase, when progesterone
levels rise; male subjects incurred a 20 percent loss. These findings suggest that cocaines effects...
Differences between boys and girls show less than three weeks into pregnancy
...y after an egg is shed that produces oestrogen and progesterone
until the placenta can take over their production. "Other research has already shown that MSHCG is significantly higher in the presence of a female fetus in the second and third trimesters of pregnancy. But weve discovered that levels were increased ...
Other highlights in the March 6 issue of JNCI
...presence of methylation of estrogen, androgen, and progesterone
receptor genes in cancerous and normal prostate ti...also methylated in some cancerous tissues, but the progesterone
receptor was unmethylated in all tissues. Demethylization of the receptors seemed to restore their a...
Strange signals from breastfeeding
...t that breastfeeding women have higher than normal progesterone
levels. "Maybe the high progesterone
acts like an androgen," he speculates. "Maybe it's the weirdest of possible things and they're produ...
Mechanism that enables fetus to survive in mother under study
...he body; physicians and scientists have long known progesterone
and estrogen are needed in pregnancy. It's also kn...erone, hundreds times more than needed to activate progesterone
receptors. Scientists also have known, at least since the 1977 article, that at these high levels, p...
New gene may be breast-specific cancer markers
...sues were assayed for estrogen receptors and for a progesterone
receptor using ELISA. Total RNA was extracted and cDNA amplification was performed. Results The distribution of MGA, MGB, and LPB mRNA expression were examined in the tissue samples. The most significant findings of the study revealed that: A ...
Hormones modify the type of proteins produced
... -- Naturally occurring hormones such as estrogen, progesterone
and cortisol play an important role in determining what kind of protein the cell makes in response to a genetic message, said researchers at Baylor College of Medicine in a report in today's issue of the journal Science. "These steroid hormones are...
Estrogen may protect against breast cancer
...or three weeks. All animals also received a 30 mg progesterone
silastic capsule for three weeks. Blood levels of estradiol immediately after treatments were 5, 30 and 118 pg/ml, respectively, indicating that that only treatment with one microgram of estradiol resulted in pregnancy levels in circulation. Contro...
Mild aerobic exercise no protection from osteoporosis
...irty percent of the women were taking estrogen and progesterone
supplements. While such hormone replacement therapy has been known to positively benefit bone, in this study it contributed only modestly to bone mineral density and only at the lower spine....