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DHEA||Coenzyme Q10||
Sleep Aid herbal formula - natural sleep aid||Herbal Breath - herbs for bad breath problems.||
Weight loss herbal formula for menopause and pms||Ginkgo biloba||
Colon cleansing, Laxative||ViaVita, Lecithin for healthy liver
Fatty acids resources:
Pathogen research abs 1 || Pathogen research abs 2 || Pathogen research abs 3 || Pathogen research abs 4 || Pathogen research abs 5 ||
Hormone and endocrine research abs 1 || Hormone and endocrine research abs 2 || Hormone and endocrine research abs 3 || Hormone and endocrine research abs 4 || Hormone and endocrine research abs 5
Nature. 1979 Dec 20-27;282(5741):855-7.
Dopamine inhibition of action potentials in a prolactin secreting cell line is modulated by oestrogen.
Dufy B, Vincent JD, Fleury H, Du Pasquier P, Gourdji D, Tixier-Vidal A.
Secretory activity of the anterior pituitary gland is regulated by the brain through stimulatory and inhibitory substances released from nerve endings in the median eminence of the hypothalamus and carried by the adenohypophysial portal blood system to their respective target cells. These hypothalamic influences are modulated by the feedback action of peripheral hormones. Prolactin (PRL) secreting cells are, at least partially, under the stimulatory influence of thyrotropin releasing hromone (TRH) and of oestrogens. However, they are mainly controlled by inhibitory substances among which dopamine (DA) is one of the most potent in vivo as well as in vitro. The inhibitory effect of DA is reversed by oestrogen in vitro. The mechanism by which these factors interact on their target cells is poorly understood. The recent discovery that anterior pituitary cells are excitable and that they are able to generate Ca2+-dependent action potentials has led to the suggestion that these effects are involved in a stimulus-secretion coupling at the membrane level. In this paper, we report that DA inhibits both the spontaneous and TRH-induced action potentials in clonal PRL pituitary cells. In addition, oestradiol-17 beta is able to reverse the inhibitory effect of DA.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=117385&dopt=Abstract
Obstet Gynecol. 1979 Dec;54(6):695-8.
Prolactin response to thyrotropin-releasing hormone in normal and complicated late pregnancies.
Kivinen S, Ylikorkala O, Puukka M.
Maternal serum prolactin level (PRL) was determined with radioimmunoassay in normal and complicated late pregnancy. The mean basal PRL levels were not statistically different among normal (179.3 ng/ml), preeclamptic (169.7 ng/ml), hypertensive (171.4 ng/ml), twin (194.8 ng/ml), or diabetic pregnancies (134.4 ng/ml), although 3 of 17 diabetic women had abnormally low PRL levels. The PRL response to 200 micrograms of intravenously administered thyrotropin-releasing hormone (TRH) was investigated and found similar in normal, preeclamptic, hypertensive, and twin pregnancies. There was no response to TRH in 2 of 3 diabetics with a low basal PRL level. One of these diabetic patients experienced an unexplained intrauterine death 4 weeks later; the others delivered term infants, 1 of whom died of respiratory distress syndrome (RDS). These preliminary results suggest that low basal PRL levels and unresponsiveness to TRH may be related to a poor fetal or neonatal prognosis in diabetic pregnancies.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=117409&dopt=Abstract
Neuropsychobiology. 2003;47(2):78-85.
Growth hormone-insulin-like growth factor-1 axis, leptin and sleep in anorexia nervosa patients.
Lindberg N, Virkkunen M, Tani P, Appelberg B, Rimon R, Porkka-Heiskanen T.
Department of Psychiatry, University of Helsinki, Helsinki, Finland. nina.lindberp3.inet.fi
The present study characterizes the relationships between severe malnutrition, sleep, growth hormone-insulin-like growth factor-1 (GH-IGF-1) axis, and leptin levels in anorexia nervosa (AN) patients before and after weight gain. Eleven restricting-type anorectic females (mean age = 19.7 years) with severe starvation state [mean body mass index (BMI) = 13.3] were studied using polysomnography and spectral power analysis. The hormone levels were measured in the morning after sleep recording. Eleven normal-weight, age- and gender-matched healthy volunteers without a history of any eating disorder served as controls. After nutritional treatment for about 2 months (65.7 +/- 6.4 days), sleep examinations and blood tests were repeated. At this stage, the study group consisted of 5 patients (mean BMI = 15.6). Higher IGF-1 and leptin levels were associated with longer and deeper sleep among anorectics. The sleep parameters including the percentages of stage 1 sleep and SWS as well as IGF-1 tended to normalize after only limited weight gain. Sleep disturbances in anorectics may be mediated through changes in the levels of the GH-IGF-1 axis hormones, as well as the levels of leptin. 2003 S. Karger AG, Basel
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12707489&dopt=Abstract
Vet Med (Praha). 1979 Sep;24(9):525-30.
[The effect of LH releasing hormone on testosterone levels in the blood of boars with sexual dysfunctions]
[Article in Czech]
Navratil S, Forejtek P.
The levels were assessed of testosterone in the blood plasma before and 90 minutes after i.v. application of 1 mg of synthetic LH-releasing hormone to 57 boars with disorders of sexual functions and to 43 boars without sexual dysfunctions. The group of animals with sexual disorders included boars with inferior ejaculate quality and low fertility (24 animals) and cases with disturbed sexual potency (33 boars). In animals with the studied changes of sexual functions, compared with boars without sexual dysfunctions, no statistically significant difference was found in the basal concentration of testosterone in the blood. LH-releasing hormone application increased significantly the testosterone levels in the group of boars without sexual disorders by 99.5% on an average and in the whole group of animals with changes in sexual functions approximately by only 65.8%. At the same time in the subgroup of inferior ejaculate quality and low fertility the post-application increase of testicular incretion reached 60.4% and in potency disorders 61.6% and was statistically insignificant in the latter. On the basis of these findings it was derived that in boars with reproduction deviations there existed a decreased incretion reserve of the system hypophysis - testicle and the involvement of this factor in the formation of the studied sexual disorders is assumed. The obtained results are discussed in view of the earlier findings about the incretion reserve of the testicles in boars with changes in sexual functions.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=117601&dopt=Abstract
Acta Endocrinol (Copenh). 1979 Nov;92(3):437-47.
The influence of oestrogen administration in vivo on in vitro prolactin release. Interaction between dopamine and thyrotrophin releasing hormone.
Jaques S Jr, Gala RR.
The influence of oestrogen administered to the ovariectomized rat on the interaction between dopamine (DA) and thyrotrophin releasing hormone (TRH) on the release of radioimmunoassayable (RIA) and [3H]leucine incorporated into prolactin ([3H]PRL) was examined in vitro. Dopamine had a more marked suppressing effect on newly synthetized PRL (80%), as determined [3H]PRL, than on total PRL (50%), as determined by RIA-PRL. The administration of 5 micrograms of oestradiolbenzoate (OeB) for 7 days resulted in blocking the suppressing effect of DA when RIA-PRL was measured but not when [3H]PRL was measured. The administration of 5 micrograms of OeB enabled TRH to partially override the suppressing effect of DA and the degree of response was more marked when RIA-PRL was measured than when [3H]PRL was measured. The administration of 50 micrograms of OeB for 3 days enabled TRH to override the DA blockade of prolactin release to levels comparable to that of the control when RIA-PRL was measured but had little to no effect on [3H]PRL. The results are discussed in relation to the two storage pools of PRL in the pituitary and the data suggest that DA acts predominantly to suppress the newly synthetized, rapidly releasable pool. Oestrogen acts to block DA action on the older more stable PRL pool. The ability of TRH to override the DA blockade of PRL release depends upon the presence of oestrogen; here TRH acts predominantly on the older more stable pool of PRL. Oestrogen's action on disrupting the DA suppression of PRL release appears to be related to the time of day the hormone is administered subsequent to when the pituitary is exposed to DA in vitro.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=117662&dopt=Abstract
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