Endocrine research communications最新文献_第2页

Effects of (-)-trans- delta 9-tetrahydrocannabinol on serum prolactin in the pseudopregnant rat. (-)-反式- δ 9-四氢大麻酚对假妊娠大鼠血清催乳素的影响。

Endocrine research communications Pub Date : 1982-01-01 DOI: 10.1080/07435808209045750

C L Hughes, L Tyrey

引用次数: 4

Genetic variation in testicular LH receptors in the mouse. 小鼠睾丸LH受体的遗传变异。

Endocrine research communications Pub Date : 1982-01-01 DOI: 10.1080/07435808209045755

A Amador, A Bartke, W Beamer

引用次数: 5

Effect of neurotensin on specific activity of plasma cholesterol following intravenous administration of cholesterol-4-14C. 静脉注射胆固醇-4- 14c后神经紧张素对血浆胆固醇比活性的影响。

Endocrine research communications Pub Date : 1982-01-01 DOI: 10.3109/07435808209045763

L Peric-Golia, C F Gardner, M Peric-Golia

引用次数: 1

A sensitive method for detection of circulating forms of human growth hormone by immunoautoradiography. 免疫放射自显影法检测人生长激素循环形式的灵敏方法。

Endocrine research communications Pub Date : 1982-01-01 DOI: 10.3109/07435808209045767

D A Cohen, K O'Connell, S L Blethen, W H Daughaday

引用次数: 0

Differential effect of althesin versus chloralose-urethane anesthesia on in vivo LHRH and LH release in the proestrous rat. 醛糖素与氯醛脲麻醉对发情大鼠体内LHRH和LH释放的差异影响。

Endocrine research communications Pub Date : 1982-01-01 DOI: 10.1080/07435808209045751

M Ching

{"title":"Differential effect of althesin versus chloralose-urethane anesthesia on in vivo LHRH and LH release in the proestrous rat.","authors":"M Ching","doi":"10.1080/07435808209045751","DOIUrl":"https://doi.org/10.1080/07435808209045751","url":null,"abstract":"Anesthetic doses of Althesin and chloralose-urethane were compared as to their effects on neuroendocrine reproductive processes in diestrous and proestrous rats. Proestrous rats treated with Althesin experienced a 5-fold increase in immuno-reactive luteinizing hormone releasing hormone (LHRH) concentration in methanolic extracts of pituitary stalk plasma. This LHRH increase was 67% greater than that of proestrous rats administered chloralose-urethane. Moreover, Althesin given before the onset of the critical period did not suppress the proestrous surge of LHRH in stalk plasma. The Duncan's multiple range test indicated stalk plasma LHRH activity was significantly elevated in proestrous rats anesthetized with Althesin (p less than 0.05) but not with chloralose-urethane. However, the luteinizing hormone (LH) concentration in peripheral plasma increased 14 to 18-fold in all proestrous rats, including those anesthetized with chloralose-urethane. Evidently, in chloralose-urethane-treated rats, the smaller LHRH surge during proestrus is sufficient to elicit maximum release of LH from the anterior pituitary gland. This suggest that under normal conditions the amount of LHRH secreted into portal blood during proestrus is approximately 2-fold greater than that necessary to elicit maximum secretion of LH. The results also show that picogram concentrations of LH in the stalk plasma will stimulate the release of nanogram quantities of LH into the peripheral plasma of the same rats. Moreover, the sensitivity of the pituitary gland to LHRH stimulation via the portal circulation increases nearly 3-fold between diestrus and proestrus.","PeriodicalId":75821,"journal":{"name":"Endocrine research communications","volume":"9 1","pages":"37-46"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/07435808209045751","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18093797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Kinetics of the double-antibody, liquid-phase radioimmunoassay for rat gonadotropins. 大鼠促性腺激素双抗体液相放射免疫测定动力学。

Endocrine research communications Pub Date : 1982-01-01 DOI: 10.1080/07435808209045756

W E Findley, A Steinberger

引用次数: 4

Effects of liposome-adipocyte interaction on calcium binding and insulin action. 脂质体-脂肪细胞相互作用对钙结合和胰岛素作用的影响。

Endocrine research communications Pub Date : 1982-01-01 DOI: 10.1080/07435808209045757

A Sandra, D J Fyler

{"title":"Effects of liposome-adipocyte interaction on calcium binding and insulin action.","authors":"A Sandra, D J Fyler","doi":"10.1080/07435808209045757","DOIUrl":"https://doi.org/10.1080/07435808209045757","url":null,"abstract":"The interaction of phosphatidylserine (PS)-containing liposomes with isolated rat adipocytes under conditions of liposome-cell fusion or endocytosis was accompanied by an increase in adipocyte membrane calcium binding in both the basal and insulin-stimulated state. In vesicle-treated adipocytes, insulin-stimulated 2-deoxyglucose uptake was inhibited and not as dependent on external calcium concentration as in control cells. These data suggest that the inhibition of insulin-stimulated 2-deoxyglucose uptake in vesicle treated adipocytes may result from the binding of calcium to the exogenously introduced phospholipid at the expense of membrane constituents normally involved in insulin-stimulated calcium binding. This is supported by the observations that 1) the calcium ionophore A23187 increased intracellular calcium levels, yet had no effect on insulin-stimulated hexose uptake; and 2) treatment of intact adipocytes with phospholipase A2 after the cells had been incubated with vesicles resulted in a decrease in membrane associated Ca++ and exogenous phosphatidylserine, which is consistent with a direct role of membrane phosphatidylserine in calcium binding.","PeriodicalId":75821,"journal":{"name":"Endocrine research communications","volume":"9 2","pages":"107-20"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/07435808209045757","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17871028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

cAMP-dependent protein kinase II interactions with nuclei derived from rat mammary tumor. camp依赖性蛋白激酶II与大鼠乳腺肿瘤细胞核的相互作用。

Endocrine research communications Pub Date : 1982-01-01 DOI: 10.3109/07435808209045761

F Y Tang, L S Catapano

引用次数: 0

Neuroendocrine control of ovarian autografts. 卵巢自体移植物的神经内分泌控制。

Endocrine research communications Pub Date : 1982-01-01 DOI: 10.3109/07435808209045764

D M Nance, W H Moger, M Wilkinson

{"title":"Neuroendocrine control of ovarian autografts.","authors":"D M Nance, W H Moger, M Wilkinson","doi":"10.3109/07435808209045764","DOIUrl":"https://doi.org/10.3109/07435808209045764","url":null,"abstract":"At 24 days of age, either one or both ovaries of female rats were removed and transplanted subcutaneously on their respective side. Relative to sham operated rats, endocrine effects of the ovarian grafts were as follows: 1) Animals with ovarian grafts showed an advancement of puberty, 2) rats with bilateral grafts showed more 5 day estrous cycles and higher FSH levels, 3) hemi-ovariectomy of animals with bilateral grafts produced a greater increase in both LH and FSH 6-8 hr post-surgery in contrast to controls which only showed an increase in serum FSH levels, 4) weights of the bilateral grafts were comparable to intact ovaries, but the unilateral grafts were small and comparable to their original size at the time of transplantation (the intact ovary showing compensatory hypertrophy), 5) both control and bilateral ovarian graft groups showed ovarian compensatory hypertrophy, 6) removal of the small unilateral ovarian graft had no detectable endocrine effect on the remaining intact ovary which had already undergone compensatory hypertrophy, 7) removal of the intact ovary of rats with a unilateral graft produced a remarkable increase in the weight of the remaining small autograft such that these animals had the largest remaining gonad as well as higher uterine weights than controls. Thus, although ovarian autografts appear to function similar to in situ glands, the alterations in puberty, estrous cycles, FSH and LH levels and uterine weights suggest that endocrine control mechanisms are altered in rats with ovarian grafts.","PeriodicalId":75821,"journal":{"name":"Endocrine research communications","volume":"9 3-4","pages":"185-94"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3109/07435808209045764","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17871814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Uterine hydrogen peroxide concentrations and peroxidase activities in the estrous cycle and perimaturation period of mice. 小鼠发情周期和催熟期子宫过氧化氢浓度和过氧化物酶活性。

Endocrine research communications Pub Date : 1982-01-01 DOI: 10.1080/07435808209045752

J Katz, S Kadner, M Levitz

引用次数: 2