Abstract：
:Recent evidences point to a role of estrogens in males. We have earlier reported that tamoxifen, a synthetic non-steroidal antiestrogen, when administered to adult male rats, in the dose range of 0.04-0.4 mg/kg per day, reduced fertility. The reduced fertility was measured in terms of fertility index (a measure of the efficiency of the ovulated ovas to fertilise and implant), fecundity (siring ability) and litter size. The present study was done to investigate whether the reduction in fertility index was due to reduction in fertilising ability or increase in pre-implantation embryo loss. Also a dose related effect of tamoxifen from 0.02 mg to 2 mg/kg per day on the fertility of the male rats was studied. To study the fertilising ability, control and tamoxifen (0.4 mg/kg per day, the most effective dose) treated adult male rats were mated with normal cycling females and the females sacrificed at day 0-4 of gestation. Eggs fertilised/unfertilised were flushed from the oviduct/uterus and the number and types of eggs were noted. The index of fertilisation, a measure of the fertilising ability was determined. The studies demonstrate that the reduction in fertility is not due to decreased fertilising ability but because of the increased pre-implantation embryo loss as evident from an increase in number of abnormal eggs in the treated group with no change in index of fertilisation. A dose related decrease in fertility was observed. The present study suggests that tamoxifen at 0.02-2-mg dose is predominantly estrogenic in males and paternal factor/s sensitive to tamoxifen is involved in embryogenesis.
journal_name
Mol Cell Endocrinoljournal_title
Molecular and cellular endocrinologyauthors
Balasinor N,Parte P,Gill-Sharma MK,Juneja HSdoi
10.1016/s0303-7207(01)00428-2keywords:
subject
Has Abstractpub_date
2001-06-10 00:00:00pages
199-206issue
1-2eissn
0303-7207issn
1872-8057pii
S0303720701004282journal_volume
178pub_type
杂志文章abstract：:Gonadotropin-releasing hormone (GnRH) neurons coordinate reproduction. However, whether GnRH neurons directly sense free fatty acids (FFAs) is unknown. We investigated the individual effects of the FFAs docosahexaenoic acid (DHA), palmitate, palmitoleate, and oleate (100 μM each) on Gnrh mRNA expression in the mHypoA-...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2016.02.019
更新日期：2016-05-05 00:00:00
abstract：:Effects of human retinoid X receptor alpha (hRXR alpha) and its ligand, 9-cis-retinoic acid, on T3-mediated auto-regulation of hTR beta 1 gene expression were examined using a chloramphenicol acetyltransferase (CAT) reporter system, and a deletional analysis of the promoter. hRXR alpha enhanced T3-dependent CAT induct...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(95)03522-9
更新日期：1995-04-28 00:00:00
abstract：:Osteoblastic metastases are common in patients with advanced prostate cancer. The pathophysiology of the new bone formation at metastatic sites is not currently known, but it is hypothesized that growth factors secreted by the prostate may be involved. Unfortunately, most rodent models of prostate cancer with metastas...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/s0303-7207(02)00260-5
更新日期：2002-11-29 00:00:00
abstract：:Autodigestion of nuclei isolated from the androgen-dependent Shionogi mouse mammary carcinoma revealed the presence of endogenous endonuclease activity which was stimulated by Ca2+ and Mg2+ and generated a repeating pattern of DNA fragments with an average monomeric size of 179 base pairs. The nuclear concentration of...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(86)90144-9
更新日期：1986-05-01 00:00:00
abstract：:A new analogue of recombinant human growth hormone (hGH), hGH des(1-6,14) was expressed in Escherichia coli, refolded and purified to homogeneity. The mutation decreased the hormone's ability to bind lactogenic and somatogenic receptors through its site 1, and almost completely abolished its ability to bind these rece...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/s0303-7207(97)00084-1
更新日期：1997-06-20 00:00:00
abstract：:Imprinted gene expression in preimplantation development has been extensively studied in the mouse. Different imprinted genes vary in their time of onset of expression and also in the timing and tissue-specificity of mono-allelic expression. We have surveyed a range of imprinted genes for expression, and mono-allelic ...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/s0303-7207(01)00575-5
更新日期：2001-10-22 00:00:00
abstract：:The relationship between ATP-induced uptake of 45Ca2+ and the ATP-induced changes in [Ca2+]i was investigated in rat FRTL-5 thyroid cells. Addition of 1 microCi 45Ca2+/ml together with ATP induced a time- and dose-dependent increase in uptake of 45Ca2+, the uptake being still significantly above control after 30 min. ...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(91)90105-2
更新日期：1991-08-01 00:00:00
abstract：:Procedures have been developed which provide simple means of determining binding constants of steroid receptors for glucocorticoids in mouse lymphoid cell lines and of characterizing the interaction of the steroid--receptor complex with the nucleus. An average of 70% of the steroid--receptor complexes is found associa...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(78)90124-7
更新日期：1978-04-01 00:00:00
abstract：:Allatostatins with a typical YXFGL-amide C-terminus constitute a neuropeptide family, which was discovered because of its inhibitory action on insect juvenile hormone synthesis. In the search for possible new functions for allatostatins we focused our attention on the fat body. Our previous studies on the cockroach Bl...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(96)03864-6
更新日期：1996-08-09 00:00:00
abstract：:It is widely accepted that obesity is a major risk factor for the development of atherosclerosis. In this context, adipose tissue produces a variety of adipokines and releases free fatty acids, contributing to a chronic-low grade inflammation state implicated in vascular complications. In this study, we investigated t...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2012.06.010
更新日期：2012-10-15 00:00:00
abstract：:The time- and dose-dependent effects of bovine activin A and bovine follicle stimulating hormone (FSH) suppressing protein (FSP) or follistatin on basal and FSH-induced steroidogenesis and inhibin production were studied in granulosa cells from immature, diethylstilbestrol (DES)-treated rats. In the presence of rat FS...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(90)90082-j
更新日期：1990-02-12 00:00:00
abstract：:A two-site immunoradiometric assay for insulin is described which is both rapid (processing time 60 min) and highly sensitive (lower detection limit 2 pM). Insulin is bound by a 125I-labelled mouse monoclonal antibody raised against human proinsulin and binding assessed by immunoprecipitation with an immunoadsorbent p...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(89)90207-4
更新日期：1989-12-01 00:00:00
abstract：:Brown fat has been highlight as a new therapeutic target for treatment of obesity and diabetes. However, molecular mechanism underlying brown adipogenesis are not fully understood. Here, we identified that MAP kinase phosphatase 3 (MKP3) has a novel role as regulator of brown adipocyte differentiation. The expression ...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2015.08.023
更新日期：2015-11-15 00:00:00
abstract：:In the 40 years of transferrin research, no previous role for apotransferrin has been recognized other than to serve as a plasma carrier for dietary and storage iron. Our studies have revealed a new 'autocrine' growth role for this molecule as well as a possible new cell-cell bridge/CAM function. Certainly, these obse...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/0303-7207(91)90053-u
更新日期：1991-05-01 00:00:00
abstract：:Adenomas and nodules of the human adrenal cortex are common, whereas adrenocortical carcinomas are rare. Genes such as IGF2 have been suggested to be important in human adrenocortical tumorigenesis but their role has not been directly investigated. We describe here elements of a system in which hypotheses concerning t...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2008.10.046
更新日期：2009-03-05 00:00:00
abstract：:Fibrosis is one of the key pathological features of airway remodeling in asthma. In the normal airway the amount of collagen and other extracellular matrix components is kept in equilibrium by regulation of synthesis and degradation. In asthma this homeostasis is disrupted due to genetic and environmental factors. In ...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2012.01.007
更新日期：2012-04-04 00:00:00
abstract：:Non-alcoholic fatty liver disease (NAFLD) is associated with hepatic insulin resistance with the molecular basis of this association being not well understood. Here we studied the effect of hepatic triglyceride accumulation induced by postprandial triglyceride-rich lipoproteins (TGRL) on hepatic insulin sensitivity in...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2011.06.008
更新日期：2011-08-22 00:00:00
abstract：:Gonadotropin-releasing hormone receptor (GnRH-R) activation stimulates synthesis and release of gonadotropins in the vertebrate pituitary and also mediates other processes both in the brain and in peripheral tissues. To better understand the differential function of multiple GnRH-R paralogs, three GnRH-R genes (gnrhr1...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2013.01.025
更新日期：2013-04-30 00:00:00
abstract：:Corticotropin (ACTH) regulates glucocorticoid production through specific receptors on the adrenal cortex. Analysis of the ACTH receptor mRNA in human adrenal has revealed the presence of five transcripts ranging from 1.8 to 11 kilobases (kb). Characterization of the 5'-untranslated regions (UTRs) of the ACTH receptor...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(94)90194-5
更新日期：1994-12-01 00:00:00
abstract：:Stat5 is a key intracellular mediator of prolactin signalling and can activate transcription of milk proteins in response to prolactin. Therefore, in animals such as mice where lactation is dependent on prolactin, Stat5 is likely to play an important role in establishing or maintaining lactation in the mammary gland. ...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/s0303-7207(97)00161-5
更新日期：1997-10-20 00:00:00
abstract：:Renin secretion was stimulated in rats by adrenalectomy (ADX), by treatment with the converting enzyme inhibitor enalapril (MK 421), or by feeding a low salt diet plus furosemide treatment (FUR). Relative amounts of renin mRNA were measured by densitometric Northern blot analysis using a 32P-labeled 700 bp mouse subma...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(87)90020-7
更新日期：1987-04-01 00:00:00
abstract：:Pituitary adenomas (PAs) hypersecrete hormones or cause mass effect symptoms, with 10%-35% patients showing resistance to standard therapies. Targeting epidermal growth factor receptor (EGFR) has significantly improved the clinical outcome in many cancers. In this study, immunochemistry results showed that EGFR associ...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2020.111083
更新日期：2021-01-15 00:00:00
abstract：BACKGROUND/PURPOSE:It remains unclear what role curcumin plays in the autophagy of osteoclast precursors (OCPs) during osteoclastogenesis, since some researchers found that curcumin has the ability to inhibit osteoclastogenesis. While others have considered it as an autophagy activator. This study aimed to determine th...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/j.mce.2019.110637
更新日期：2020-01-15 00:00:00
abstract：:Earlier studies indicate that rat hypothalamic oxytocin (OT) mRNA accumulation rises gradually during pregnancy and remains elevated throughout the lactation period. Here we show that, in addition, hypothalamic OT mRNA undergoes a structural change during this period. On gel electrophoresis, the size of rat OT mRNA in...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(89)90165-2
更新日期：1989-08-01 00:00:00
abstract：:As deduced on the basis of cloning experiments, the putative extracellular domain of pituitary glycoprotein hormone (lutropin (LH), thyrotropin (TSH), and FSH) receptors (rec) is sufficiently large to suggest involvement in hormone binding. Comparison of the amino acid sequences of the extracellular domains of the gly...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(92)90228-x
更新日期：1992-09-01 00:00:00
abstract：:Marsupials are a group of mammals that are under-exploited, in particular in developmental and evolutionary studies of biological systems. In this review, the roles that marsupials have played in elucidating the evolution of thyroid hormone distribution systems are summarised. Marsupials are born at very early develop...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.mce.2008.04.002
更新日期：2008-10-10 00:00:00
abstract：:The mitogenic and metabolic activities of insulin-like growth factors (IGF) are modulated by a family of six high affinity IGF binding proteins (IGFBPs). This study describes the expression of the mouse IGFBP-6 which is unique among IGFBPs in its preferential binding of IGF II, in insect cells using the baculovirus sy...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/s0303-7207(97)00233-5
更新日期：1998-02-01 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：:Environmental conditions in early life permanently alter the development of glucocorticoid receptor gene expression in the hippocampus and hypothalamic-pituitary-adrenal responses to acute or chronic stress. In part, these effects can involve an activation of ascending serotonergic pathways and subsequent changes in t...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章,评审
doi：10.1016/s0303-7207(01)00635-9
更新日期：2001-12-20 00:00:00
abstract：:Porcine Leydig cells in primary culture were incubated to equilibrium with increasing doses of either porcine luteinizing hormone (pLH) or human chorionic gonadotropin (hCG). Then, free and total high affinity gonadotropin receptors on the cell surface were dosed with [125I]hCG as tracer. In isotonic high salt medium,...
journal_title：Molecular and cellular endocrinology
pub_type： 杂志文章
doi：10.1016/0303-7207(91)90263-r
更新日期：1991-04-01 00:00:00
