Abstract:
:To determine whether G proteins are involved in the regulation of mouse placental lactogen-I (mPL-I) and/or mPL-II secretion before midpregnancy, mouse placental tissue from day 7 of pregnancy was dispersed with collagenase, cells were fractionated on a percoll gradient, and the purified trophoblast cells were cultured in a serum-free medium with cholera toxin (CTX) or pertussis toxin (PTX) which modulate the activities of distinct G proteins for 5 days. CTX inhibited both mPL-I and mPL-II secretion, but PTX inhibited mPL-I secretion and stimulated mPL-II secretion in a time- and dose-dependent manner. Addition of both CTX and PTX additionally inhibited mPL-I secretion but did not affect mPL-II secretion. 8-Bromo cAMP, which increases intracellular cAMP accumulation, inhibited both mPL-I and mPL-II secretion similarly to CTX. In contrast, H8, an inhibitor of cAMP-dependent protein kinase A, stimulated both mPL-I and mPL-II secretion. Addition of PTX and H8 synergistically stimulated mPL-II secretion. These findings suggest that G proteins play important roles in regulation of mPL-I and mPL-II secretion before midpregnancy.
journal_name
J Endocrinol Investjournal_title
Journal of endocrinological investigationauthors
Yamaguchi M,Miyake Adoi
10.1007/BF03349006subject
Has Abstractpub_date
1996-09-01 00:00:00pages
492-8issue
8eissn
0391-4097issn
1720-8386journal_volume
19pub_type
杂志文章abstract:OBJECTIVE:Neuroendocrine dysfunction in polycystic ovary syndrome (PCOS) was addressed by studying the steroid hormone changes in women with PCOS with either high or normal LH levels leading to inferences regarding the primacy of elevated LH in the pathophysiology of PCOS. METHODS:A cross-sectional study was designed ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03345319
更新日期:2005-11-01 00:00:00
abstract::Prolactin (PRL) circulates as multiple molecular weight variants: glycosylated phosphorylated, deamidated and sulphated forms. The profiles of the forms, as determined by isoelectrofocusing (IEF), differ in physiological and pathological conditions. The case of a 72-year-old woman affected by an invasive prolactinoma ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350303
更新日期:1997-05-01 00:00:00
abstract::Hexarelin (Hex) is a synthetic hexapeptide with potent GH-releasing activity in both animals and men. Aim of this study was to evaluate the GH response to a maximal dose of Hex and GH-releasing hormone (GHRH) in a group of patients with Prader-Willi syndrome (PWS). Seven patients (4 boys and 3 girls, age 2.4-14.2 yr) ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347335
更新日期:1998-09-01 00:00:00
abstract:AIMS:To investigate the prevalence of metabolic syndrome and its components in both rural and urban Chinese population. SUBJECTS AND METHODS:A population-based crosssectional survey was conducted in Qingdao, China in 2006 with 6100 Chinese aged 35-74 yr invited and 5355 who attended; 3357 subjects, 1562 urban (46.5%) ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,随机对照试验
doi:10.1007/BF03346711
更新日期:2011-06-01 00:00:00
abstract::It has recently been suggested that the classical routine of glucocorticoid administration before and after transsphenoidal surgery (TSS) in Cushing's disease (CD) patients may not be necessary, since it is likely that peritumoral normal corticotrophs are not completely suppressed during this period. We compared the d...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347237
更新日期:2005-06-01 00:00:00
abstract::The aim of this study was to determine the protein pattern of human thyroid fine needle aspiration fluid (FNA) using a proteomic approach. FNA proteins were separated using 2-dimensional gel electrophoresis (2DE), digested and then analyzed by peptide mass fingerprinting. For the first time, we provided an image of th...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03349229
更新日期:2007-11-01 00:00:00
abstract::GH response to an iv bolus of growth-hormone-releasing hormone (GHRH 1-44, 2 micrograms/kg iv) was evaluated in 17 prepubertal children with total GH deficiency (GHD), 6 with partial GHD and in 7 prepubertal normal but short children tested as control. GH response to conventional pharmacological (insulin and arginine ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03346976
更新日期:1986-12-01 00:00:00
abstract:BACKGROUND:Bone marrow mesenchymal stem cells (MSC) mediate their protection by paracrine mechanism under ischemic conditions and anoxic pre-conditioning (AP) of MSC strongly enhances their survival and regenerative capacity. However, there is no report about the therapeutic potency of MSC transplantation on diabetic c...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03345575
更新日期:2008-02-01 00:00:00
abstract::Aim of the study was to compare urinary galactosyl-hydroxylysine (GHyl), deoxypyridinoline (D-Pyr) and pyridinoline (Pyr) before and after 5 to 9 months of hormone replacement therapy (HRT) in postmenopausal women. The urinary markers were measured by HPLC in the second void of fasting samples and were expressed as ra...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03349858
更新日期:1996-03-01 00:00:00
abstract::The pathogenesis of human obesity is the result of dysregulation of the reciprocal relationship between food intake and energy expenditure (EE), which influences daily energy balance and ultimately leads to weight gain. According to principles of energy homeostasis, a relatively lower EE in a setting of energy balance...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.1007/s40618-017-0732-9
更新日期:2018-01-01 00:00:00
abstract::Traumatic brain injury (TBI) combined with fractures of long bones or large joints is often associated with enhanced osteogenesis (early fracture healing accompanied by hypertrophic callus formation and/or heterotopic ossifications). Humoral factors that cause enhanced osteogenesis in patients with TBI are not yet ide...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350319
更新日期:1998-02-01 00:00:00
abstract::We studied the effects of high doses of methimazole (MMI) or propylthiouracil (PTU) on thyroid-stimulating antibody (TSAb), antithyroid microsomal (MCHA) and antithyroglobulin (TGHA) levels in Graves' disease and Hashimoto's thyroiditis. Thirty Graves' hyperthyroid patients were treated for 14 +/- 8 months (mean +/- S...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348107
更新日期:1986-06-01 00:00:00
abstract::Several clinical signs might be related to the decline of DHEA secretion in aged people: sarcopenia, osteopenia, atherosclerosis progression, impairment of cognitive and affective performances, deterioration of immunocompetence are the most significant evidences. In addition, in aged people this clinical condition mig...
journal_title:Journal of endocrinological investigation
pub_type:
doi:
更新日期:2002-01-01 00:00:00
abstract:PURPOSE:Iodine plays a pivotal role in adaptation during the transition from intrauterine to extrauterine life. Although it is well known that the placenta plays a role in iodine storage, a relationship between the neonatal thyroid stimulating hormone (TSH) peak and placental iodine concentration has not been establish...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-020-01399-y
更新日期:2020-08-28 00:00:00
abstract::Our study previously showed that estrogen and progesterone stimulated the production of matrix metalloproteinase-14 [MMP-14, or also named membrane type matrix metalloproteinses-1 (MT1-MMP)] in osteoblastic cells. MMP-14 was implied to regulate the function of osteoblasts by degrading bone matrix or growth factors, bu...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03345259
更新日期:2003-11-01 00:00:00
abstract::The aim of acromegaly treatment is to control the disease by suppressing GH hyperactivity and reducing the size or impeding the growth of the pituitary GH secreting mass. Over recent years, many studies have emphasized the role of SS analogs in the treatment of acromegaly. In fact, SS analogs have been demonstrated to...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.1007/BF03349183
更新日期:2006-01-01 00:00:00
abstract::In testicular descent to the scrotum, a multistep process, many anatomical and hormonal factors play a role. Cryptorchidism occurs in about 1-2% of males and may cause secondary degeneration of the testes. Animal models have shown that abnormalities, in the calcitonin gene-related peptide (CgRP) activity, could be rel...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347519
更新日期:2004-09-01 00:00:00
abstract::The activities of total superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and catalase (CAT) enzymes were measured in cancerous and non-cancerous adjacent tissues from 15 patients with follicular thyroid cancer containing single nodule. SOD and GSH-Px activities were found lower but malondialdehyde levels hi...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347868
更新日期:1996-05-01 00:00:00
abstract::Pheochromocytoma resection is often complicated by intra-operative hypertension and post-resection hypotension. Factors associated with these hemodynamic alterations are not well defined. The aim of this study was to analyse the clinical-laboratory features associated with hemodynamic parameters during pheochromocytom...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03346458
更新日期:2009-03-01 00:00:00
abstract:INTRODUCTION:Vitamin D (VD) insufficiency has been repeatedly observed in the medical conditions associated with inflammation, such as cardiovascular disease, diabetes and depression. However, contrasting to the observational evidence, randomized trials of VD supplementation failed to demonstrate such link. Given the r...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-014-0191-5
更新日期:2014-11-01 00:00:00
abstract::Our aim was to investigate the effect of GnRH-agonist (GnRH-a) induced suppression of plasma sex steroids on serum GH, insulin like growth factor-I (IGF-I) and insulin levels after an oral glucose load (OGTT) in women with polycystic ovary syndrome (PCOS). Serum insulin, GH and IGF-I levels during a 75-g 4-h OGTT were...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03346907
更新日期:1997-04-01 00:00:00
abstract:PURPOSE:Testosterone replacement therapy (TRT) is recommended for the treatment of most cases of male hypogonadism. Transdermal testosterone (T) gels are commonly used in clinical practice; however, there is little evidence concerning how to monitor dosage to bring and maintain serum T levels in the normal physiologic ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-019-01082-x
更新日期:2019-12-01 00:00:00
abstract:PURPOSE:Growth hormone deficiency (GHD) is the most common endocrine late effect observed in childhood cancer survivors (CCS) previously submitted to cranial irradiation. Radiation therapy can also increase the risk of second neoplasms (SNs). Since in previous studies GH replacement therapy was associated with increase...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-014-0179-1
更新日期:2015-02-01 00:00:00
abstract:BACKGROUND:In obese subjects it has been shown that cortisol (F) contributes to the reduction in insulin sensitivity, suggesting a role in the development of the metabolic syndrome (MS). AIM:The aim of this retrospective study was to evaluate the relationship between F and components of MS in 1,027 obese children and ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-013-0014-0
更新日期:2014-01-01 00:00:00
abstract::Anorexia nervosa (AN) is an eating disorder characterized by self-induced starvation due to fear of adiposity. Ghrelin, gastric peptide with potent orexigenic, adipogenic, GH-releasing and metabolic properties, is elevated in AN. We have previously shown that intervention with exogenous ghrelin is not effective in ter...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350816
更新日期:2007-10-01 00:00:00
abstract::Steroid 21-hydroxylase deficiency (21OHD) compromises about 95% of all cases of congenital adrenal hyperplasia. We have characterized the disease-causing mutations in the steroid 21-hydroxylase genes of 19 Chilean patients (12 females and 7 males) with the simple virilizing (SV) form of 21OHD and compared them with ot...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03343746
更新日期:2000-06-01 00:00:00
abstract::To verify if the entity of the peak GH responses to the GHRH+arginine (ARG) test is able to show different degree forms of GH deficiency (GHD), we linked these responses with the number of other anterior pituitary deficits. These anterior pituitary deficits were also related with IGF-I levels. To this purpose, we stud...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03345381
更新日期:2005-03-01 00:00:00
abstract:BACKGROUND:Autoimmune polyendocrinopathy-candidiasis-ectodermal-dystrophy (APECED) or autoimmune polyglandular syndrome type 1 (APS-1) is a rare autosomal recessive genetic disease due to mutations in the AIRE (AutoImmune REgulator) gene. The clinical diagnosis is classically based on the presence of at least two of th...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.1007/s40618-020-01376-5
更新日期:2020-08-07 00:00:00
abstract::Obesity is associated with a number of serious diseases and with a degree of motor disability, but the extent of the risk and functional derangement within the obese population is not yet completely defined. The study aims to evaluate the combined effect of degree of adiposity, body fat distribution and age on selecte...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03349195
更新日期:2006-11-01 00:00:00
abstract::Thyroid function tests were evaluated in 34 patients with acute viral hepatitis (AVH) and in 38 healthy controls (C). As expected, AVH patients displayed a significant increase in T4, rT3 and TBG serum levels with respect to C, while FT4 and TSH concentrations were similar. A positive correlation between TBG and T4 wa...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03349947
更新日期:1989-03-01 00:00:00