Abstract：
:Direct roles of follicle-stimulating hormone (FSH)-suppressing protein (FSP) and activin in regulation of ovarian granulosa cell differentiation have been reported recently. The present study further investigated the effects of these peptides on steroidogenesis and inhibin production as well as cAMP generation in cultured granulosa cells from immature, diethylstilbestrol (DES)-treated rats. In the presence of FSH (20 ng/ml) and activin (30 ng/ml), which enhanced FSH-induced aromatase activity, progesterone production and inhibin production, FSP (1-100 ng/ml) reversed the stimulating activities of activin in a dose-dependent manner. In addition, activin reversed the inhibitory effects of FSP on FSH-induced aromatase activity and inhibin production. In the presence of FSH, activin enhanced FSH-stimulated extracellular cAMP accumulation, and FSP caused a reduction in extracellular cAMP. Activin but not FSP also stimulated basal cAMP level. In the presence of forskolin, a potent stimulant of adenyl cyclase activity which stimulated extracellular cAMP, aromatase activity, progesterone production and inhibin production, activin augmented the effect of forskolin on all four parameters, whereas FSP significantly enhanced progesterone production without changing the other three parameters. Our findings suggest that activin action on rat granulosa cells may be mediated via regulation of cAMP generation. The action of FSP and FSH and/or activin-dependent, consistent with either an action as an activin binding protein or by a direct action of FSP on the granulosa cells.
journal_name
Mol Cell Endocrinoljournal_title
Molecular and cellular endocrinologyauthors
Xiao S,Findlay JKdoi
10.1016/0303-7207(91)90100-7subject
Has Abstractpub_date
1991-08-01 00:00:00pages
99-107issue
1-3eissn
0303-7207issn
1872-8057pii
0303-7207(91)90100-7journal_volume
79pub_type
杂志文章abstract：:Three chimeras of the rat GnRH receptor (rGnRHR) and an enhanced green fluorescent protein (GFP) were assessed to examine their suitability as probes of the receptor in transfected GH3 cells. Direct fusion of GFP to the N or C terminus of the rGnRHR abolished the receptor ligand binding affinity and the chimeric recep...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/s0303-7207(98)00204-4
更新日期：1998-11-25 00:00:00
abstract：:Granulosa cell-derived inhibin A (a dimer of alpha- and beta A-subunits), activin A (a homodimer of beta A-subunits) and the activin-binding protein follistatin are important regulators of human ovarian steroidogenesis. We here studied how 8-bromo-cAMP (8br-cAMP), a protein kinase A activator, and 12-O-tetradecanoylph...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(96)03842-7
更新日期：1996-07-23 00:00:00
abstract：:The effects of tamoxifen (Tam) and its 4-hydroxylated metabolite (OH-Tam) on the growth of two human breast cancer cell lines ( MCF7 and BT20 ) were evaluated by fluorometric DNA assay. The effects of the antiestrogens were dependent upon their concentrations and the nature of the cells. At concentrations below 4 micr...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(84)90004-2
更新日期：1984-05-01 00:00:00
abstract：:Molecular cloning of the prolactin (PRL) receptor cDNA has revealed different forms of the receptor: among them, the longest form encodes a transmembrane protein of 592-598 amino acids and was originally found in rabbit mammary gland as well as in human and rat tissues. It contains a cytoplasmic domain of 358 amino ac...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(94)90011-6
更新日期：1994-03-01 00:00:00
abstract：:It has already been shown that Wistar rat thyroid (WRT) cells in low concentrations of calf serum (0.5%) are under the influence of both thyrotropin (TSH) and insulin as regards growth. The present data show that epidermal growth factor (EGF), in concentrations up to 10 micrograms/ml, is not able to modify DNA synthes...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(89)90166-4
更新日期：1989-08-01 00:00:00
abstract：:Insulin-induced glucose uptake by skeletal muscle results from Akt2 activation and is severely impaired during insulin resistance. Recently, we and others have demonstrated that BMP9 improves glucose homeostasis in diabetic and non-diabetic rodents. However, the mechanism by which BMP9 modulates insulin action remains...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2010.01.003
更新日期：2010-05-05 00:00:00
abstract：:The human adrenal cortex is a complex endocrine organ that secretes mineralocorticoids, glucocorticoids and adrenal androgens. These steroids arise from morphologically and biochemically distinct zones of the adrenal gland. Studying secretion of these distinct steroid hormones can make use of cells isolated from the a...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2003.12.020
更新日期：2004-12-30 00:00:00
abstract：:Heat shock protein 90 (Hsp90) has been demonstrated in both cytoplasm and nucleus, and regulates cytoplasmic retention of glucocorticoid receptor (GR). However, the role of nuclear Hsp90 in GR trafficking is less characterized. The present study examined the role of Hsp90 in nuclear retention of GR after ligand withdr...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2003.10.057
更新日期：2004-01-15 00:00:00
abstract：:Endocrine-disrupting chemicals (EDCs), such as perfluorooctanoate, perfluorooctane sulfonate, 2,2-dichlorodiphenyldichloroethylene, hexachlorobenzene, and polychlorinated biphenyl 153 are persistent pollutants that are found in human follicular fluid (FF). These compounds may affect endocrine function, disrupt steroid...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2019.110698
更新日期：2020-03-01 00:00:00
abstract：:The cannabinoid receptor subtype 1 gene CNR1 is not only associated with phenotypes such as cognitive performance, addiction and anxiety, but is also known to be crucially involved in responses to acute and chronic psychological and cellular stress conditions. Functional analysis of the 5' untranslated regions of the ...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2014.09.019
更新日期：2015-01-05 00:00:00
abstract：:All organisms need to be capable of adapting to changes in the availability and composition of nutrients. Over 75 years ago, researchers discovered that a calorie restricted (CR) diet could significantly extend the lifespan of rats, and since then a CR diet has been shown to increase lifespan and healthspan in model o...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2016.11.014
更新日期：2017-11-05 00:00:00
abstract：:Estrogens are the primary female sex hormones and play important roles in both reproductive and non-reproductive systems. Estrogens can be synthesized in non-reproductive tissues such as liver, heart, muscle, bone and the brain. During the past decade, increasing evidence suggests that brain estrogen can not only be s...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2013.12.018
更新日期：2014-05-25 00:00:00
abstract：:Endometrial cancer is the most common malignancy of the female genital tract. Its incidence correlates with prolonged estrogen stimulation unopposed by progesterone or synthetic progestins. Estrogen and progestin action is regulated at the pre-receptor level, by interconversion of active hormones (estradiol (E2), prog...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2005.10.009
更新日期：2006-03-27 00:00:00
abstract：:We have localized four transcription initiation sites in the human insulin-like growth factor-I (IGF-I) gene. Two transcription start sites were identified which result in a longer and shorter version of the leader derived from the known exon 1 of the IGF-I gene. Transcription starting at the upstream transcription in...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(91)90192-u
更新日期：1991-06-01 00:00:00
abstract：:Using primary cultures of porcine Sertoli cells as a model, the effects of ovine prolactin (oPRL) on Sertoli cell function were investigated through FSH binding. PRL treatment (0.3-5 ng/ml) induced a dose-dependent increase (ED50 = 5.10(-11) M) of 125I-FSH binding to Sertoli cells to a maximal stimulation (about 2.5-f...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(96)03891-9
更新日期：1996-09-18 00:00:00
abstract：:Desethylamiodarone (DEA), the major metabolite of the potent antiarrythmic drug amiodarone, is a non-competitive inhibitor of the binding of thyroid hormone (T3) to the beta 1-thyroid hormone receptor (T3R). In the present study, we investigated whether DEA acts in a similar way with respect to the alpha 1-T3R. The ch...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(95)03578-u
更新日期：1995-07-01 00:00:00
abstract：:The steroidogenic acute regulatory (StAR) protein mediates cholesterol transport within the mitochondria, and its phosphorylation is believed to be required for steroidogenesis. Increased extracellular potassium concentrations (K(+)), angiotensin II (AngII), and adrenocorticotropic hormone (ACTH) induce aldosterone se...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/s0303-7207(00)00411-1
更新日期：2001-02-28 00:00:00
abstract：:Studies were performed to evaluate the relationships between the effects of angiotensin II on calcium metabolism and cytosolic free calcium concentration in primary monolayer cultures of bovine adrenal glomerulosa cells. As noted previously (Kramer (1988) Am. J. Physiol. (in press], angiotensin II produced rapid dose-...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(88)90179-7
更新日期：1988-12-01 00:00:00
abstract：:Fertilization is a unique and exquisitely choreographed cellular interaction between the male and female gamete that results in the creation of a genetically unique individual. Despite the fundamental importance of fertilization, there remains a dearth of information about the basic biochemical mechanisms that underpi...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2005.06.004
更新日期：2005-08-30 00:00:00
abstract：:The transforming growth factor beta (TGF-beta) superfamily has profound effects on many aspects of animal development. In the last decade, our laboratory and others have performed in vivo functional studies on multiple components of the TGF-beta superfamily signal transduction pathway, including upstream ligands, tran...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/s0303-7207(01)00513-5
更新日期：2001-06-30 00:00:00
abstract：:Estrogen receptor alpha (ERalpha) mediates estrogen (E2) actions in the brain and is critical for normal reproductive function and behavior. In the classical pathway, ERalpha binds to estrogen response elements (EREs) to regulate gene transcription. ERalpha can also participate in several non-classical pathways, inclu...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2008.04.003
更新日期：2008-08-13 00:00:00
abstract：:The availability of regulatory sequences directing tissue-specific expression of transgenes in genetically modified mice and large animals is a prerequisite for the development of adequate models for human diseases. The rat insulin 2 gene (Ins2) promoter, widely used to achieve transgene expression in pancreatic beta-...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2009.08.001
更新日期：2010-02-05 00:00:00
abstract：:Although significant advances in the treatment of breast cancer have been made, in particular in the use of endocrine therapy, de novo and aquired resistance to therapy, and metastatic recurrence continue to be major clinical problems. Given the high prevalence of breast cancer, new life-style or chemotherapeutic appr...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2017.09.021
更新日期：2018-05-05 00:00:00
abstract：:Mammalian spermatozoa undergo several signaling and biochemical transformations in the female genital tract, collectively called capacitation. The capacitated spermatozoon binds to the egg zona pellucida, where it undergoes the acrosome reaction (AR), a process enabling it to penetrate and fertilize the egg. Actin pol...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2009.06.009
更新日期：2010-01-27 00:00:00
abstract：:The canonical renin-angiotensin system (RAS) involves the initial action of renin to cleave angiotensinogen to angiotensin I (ANG I), which is then converted to ANG II by the angiotensin converting enzyme (ACE). ANG II plays a critical role in numerous physiological functions, and RAS overactivity underlies many condi...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2012.04.011
更新日期：2013-09-25 00:00:00
abstract：:The high-density lipoprotein (HDL) pathway in rat adrenocortical cells was studied at the electron microscopic level in vitro via colloidal gold labelling. Steroid hormone assays were performed to confirm that the cells remained intact, viable, responsive to ACTH under the applied conditions, and to reveal the steroid...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(86)90062-6
更新日期：1986-02-01 00:00:00
abstract：:We review in this article recent findings on the effects of cell proximity (nearness to each other) on anterior pituitary cell function in vitro. Important cellular processes, including protein synthesis, basal hormone release, response to hypothalamic regulatory factors and signal transduction can change as a functio...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/0303-7207(95)03575-r
更新日期：1995-06-01 00:00:00
abstract：:Luteinized intrasplenic ovarian tumors develop in response to high circulating gonadotropins. The relationship between tumor development, gonadotropins and inhibins was studied. Tumor-bearing animals were sacrificed weekly along the first 6 weeks of development. Inhibins were measured by enzyme-linked immunosorbent as...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/s0303-7207(03)00085-6
更新日期：2003-05-30 00:00:00
abstract：:The mechanisms that control the onset of puberty remain within the purview of the neurobiologists who first recognised the concept of removal of a restraint factor to permit reawakening of puberty. The discovery of a ligand-activated G protein receptor-signalling pathway upstream of the GnRH pulse generator adds furth...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2006.04.014
更新日期：2006-07-25 00:00:00
abstract：:The effects of a GnRH antagonist analogue (N-acetyl-Ala1,D-p-Cl-Phe2,D-Trp3,6-GnRH, Ant.) and a GnRH antiserum (A/S) on the development of pituitary-testicular function were studied in immature (23/24-31/32-day-old) rats. In another experiment the Ant. treatment was combined with bromocriptine (BR)-induced hypoprolact...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(84)90065-0
更新日期：1984-02-01 00:00:00
