Abstract:
OBJECTIVE:Pituitary responsiveness to GnRH varies throughout the normal menstrual cycle. We have investigated whether there are differences in the ovarian mechanisms which regulate gonadotrophin secretion between the follicular and the luteal phase of the cycle. DESIGN:Normally ovulating women were studied during the first week following hysterectomy plus bilateral ovariectomy performed either in the mid- to late follicular phase (follicle size 16 mm) or in the early to midluteal phase (5 days post LH peak). The response of LH to a single dose of 10 micrograms GnRH was investigated 2 hours before the operation and every 12 hours after the operation until postoperative day 4 and every 24 hours until day 8. PATIENTS:Fourteen normally cycling premenopausal women with normal FSH (< 10 IU/l). Seven women were ovariectomized in the follicular and 7 in the luteal phase. MEASUREMENTS:Pituitary response to GnRH was calculated as the net increase in FSH (delta FSH) and LH (delta LH) at 30 minutes above the basal value. RESULTS:Basal levels of FSH and LH before the operation were significantly lower in the luteal than the follicular phase (P < 0.05), while those of oestradiol (E2) were similar. Also, similar were delta LH and delta FSH values. Serum progesterone and immunoreactive inhibin (Ir-inhibin) concentrations before the operation were higher in the luteal than the follicular phase (P < 0.05). Following the operation, serum E2, progesterone and Ir-inhibin values declined dramatically, while basal FSH and LH as well as delta FSH values showed a gradual and significant increase. The percentage increase in FSH and LH values (mean +/- SEM) on day 8 after the operation was similar in the follicular (453 +/- 99% and 118 +/- 35% respectively) and the luteal phase (480 +/- 71% and 192 +/- 45% respectively). In contrast to delta FSH, delta LH values after a temporal increase 12 hours from the operation, remained stable in the follicular phase and declined significantly in the luteal phase up to day 4. CONCLUSIONS:Basal gonadotrophin secretion during the normal menstrual cycle is predominantly under a negative ovarian effect. It is suggested that in contrast to FSH, the secretion of LH in response to GnRH is controlled by different ovarian mechanisms during the two phases of the menstrual cycle.
journal_name
Clin Endocrinol (Oxf)journal_title
Clinical endocrinologyauthors
Alexandris E,Milingos S,Kollios G,Seferiadis K,Lolis D,Messinis IEdoi
10.1046/j.1365-2265.1997.3461141.xsubject
Has Abstractpub_date
1997-12-01 00:00:00pages
721-6issue
6eissn
0300-0664issn
1365-2265journal_volume
47pub_type
杂志文章abstract:PURPOSE:We aim to evaluate the association of PCOS with eating, sleeping and sexual function disorders. METHODS:A comprehensive search including MEDLINE, Embase, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, and Scopus through 01 August 2018 was conducted for studies reportin...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.14153
更新日期:2020-04-01 00:00:00
abstract::The HLA-A and -B antigen distribution in 132 Hong Kong Chinese patients with Graves' disease, including 24 with thyrotoxic periodic paralysis, was compared with that in 110 controls. The HLA-DR antigen distribution in 68 patients was compared with that in 47 controls. The prevalence of Bw46 was significantly increased...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1985.tb00220.x
更新日期:1985-09-01 00:00:00
abstract::In a prospective study of the incidence of thyrotoxicosis sera from 216 thyrotoxic patients in seven English towns were assayed for TSH-receptor antibodies. The incidence of antibody negative thyrotoxicosis correlated closely with the previous prevalence of endemic goitre in the towns (r = 0.9) indicating a high curre...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1985.tb00225.x
更新日期:1985-09-01 00:00:00
abstract:OBJECTIVE:Diagnosing thyroid nodules preoperatively using traditional diagnostic tools - ultrasonography (US) and cytology - still carries a considerable degree of uncertainty, and surgery is recommended for a far from negligible number of patients simply for diagnostic purposes. Thyroid elastosonography (USE) and BRAF...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2012.04427.x
更新日期:2012-10-01 00:00:00
abstract::We were able to observe the effect of withdrawal of endogenous sympathetic drive in a hypertensive patient with an aldosterone-secreting adrenal adenoma. Acute stimulation of both carotid sinus nerves lowered blood pressure to normotensive or hypotensive levels by reducing peripheral resistance. When chronic carotid s...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1981.tb00663.x
更新日期:1981-09-01 00:00:00
abstract:OBJECTIVE:Growth hormone release in response to all known stimuli of GH secretion is blunted in obese subjects. Several studies, using d,l-fenfluramine (d,l-FF) as a serotoninergic tool, suggest that brain serotonin plays a role in the pathogenesis of this phenomenon. However, the effect of d,l-FF appears to be depende...
journal_title:Clinical endocrinology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1365-2265.1996.727548.x
更新日期:1996-05-01 00:00:00
abstract:OBJECTIVE:The present study was performed to characterize the molecular heterogeneity of serum FSH in normal males and to investigate the possible influence of testosterone on serum FSH in androgen-deficient men before and during testosterone administration. DESIGN AND PATIENTS:Serum samples were taken at 10-minute in...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1993.tb01770.x
更新日期:1993-08-01 00:00:00
abstract::Lactation has been associated with suppression of some components of the neuroendocrine stress response. In humans, suppression of the hypothalamo-pituitary-adrenal (HPA) axis has been demonstrated in response to both a psychological and an exercise challenge, but appears to be limited to a short period of time follow...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2004.02133.x
更新日期:2004-11-01 00:00:00
abstract::A modified short ACTH test for the detection of heterozygote carriers of 21-hydroxylase deficiency (21-OHD) was applied to twenty-one controls and fourteen parents of children with 21-OHD. The following modifications were introduced: (1) Endogenous ACTH was suppressed by dexamethasone administration prior to the test,...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1980.tb01372.x
更新日期:1980-06-01 00:00:00
abstract::1 alpha, 25-Dihydroxycholecalciferol (1,25-(OH)2D3) has been measured in human serum by radioimmunoassay. The assay uses a high titre antiserum raised in sheep against 1,25-(OH)2D3-25-hemisuccinate, conjugated to bovine serum albumin. The sensitivity of the assay is 10 pg/tube. Other hydroxylated forms of vitamin D3 c...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1979.tb03068.x
更新日期:1979-01-01 00:00:00
abstract:RATIONALE:Low serum testosterone is commonly observed in men with type 2 diabetes (T2DM), but the neuroendocrine pathophysiology remains to be elucidated. OBJECTIVES:The hypothalamic neuropeptide kisspeptin integrates metabolic signals with the reproductive axis in animal models. We hypothesized that administration of...
journal_title:Clinical endocrinology
pub_type: 临床试验,杂志文章
doi:10.1111/cen.12103
更新日期:2013-07-01 00:00:00
abstract:OBJECTIVE:One of the aims of a subcutaneous (SC) injection is to avoid intradermal or intramuscular injections. Pen systems are an alternative solution to single-use syringes and have become standard for example diabetes therapy. Shorter and smaller needles minimize pain and the risk of intramuscular injections. The th...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2011.04132.x
更新日期:2011-12-01 00:00:00
abstract:BACKGROUND:Acromegalic patients have increased left ventricular (LV) mass (M) and impaired diastolic function. AIM:Using ultrasonic cardiac tissue characterization, we evaluated the early changes in cardiac fibrosis (IBS) and intrinsic myocardial contractility (CVI) as well as their reversibility after treatment with ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2005.02265.x
更新日期:2005-05-01 00:00:00
abstract:OBJECTIVE:A high prevalence of diabetes mellitus has been shown in patients with primary hyperparathyroidism (PHPT). However, it is unclear whether this is related to the metabolic abnormalities in PHPT or to the presence of other risk factors for glucose intolerance in these patients. The aim of our study was to deter...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1994.tb02442.x
更新日期:1994-01-01 00:00:00
abstract:OBJECTIVE:To analyse the clinical and biochemical effects of metyrapone in the treatment of Cushing's syndrome. DESIGN:An evaluation of the standard clinical practice at one institution. PATIENTS:Ninety-one patients with Cushing's syndrome: 57 pituitary-dependent Cushing's disease, 10 adrenocortical adenomas, six adr...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1991.tb03517.x
更新日期:1991-08-01 00:00:00
abstract:BACKGROUND:Adrenal vein sampling (AVS) failure is mainly due to right adrenal vein unavailability. Multinomial regression modelling (MRM) and left adrenal vein-to-peripheral vein ratio (LAV/PV) were proposed to predict the lateralization index without the right AVS. OBJECTIVE:To assess external validity of MRM and LAV...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.14295
更新日期:2020-12-01 00:00:00
abstract:CONTEXT:It is unclear if people who develop stress hyperglycaemia have underlying abnormal glucose metabolism, an exaggerated hormonal response to stress, or both. Similarly, it is unknown whether stress hyperglycaemia predicts future glucose intolerance. OBJECTIVE:To determine the relationship between illness severit...
journal_title:Clinical endocrinology
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1365-2265.2009.03654.x
更新日期:2010-02-01 00:00:00
abstract:OBJECTIVE:Provocative stimulation tests for GH assessment have poor reproducibility and can often elicit false positive results in normal children. The aim of our study was to evaluate the capability of pegvisomant, as an enhancer of GH secretion, in unmasking false-positive results in short children undergoing GH test...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2007.03132.x
更新日期:2008-06-01 00:00:00
abstract:OBJECTIVE:Abnormal serum liver function tests are common in patients with untreated thyrotoxicosis, even prior to the initiation of antithyroidal medications that may worsen the severity of the abnormal serum liver biochemistries. There is a wide range of the incidence of these abnormalities in the published literature...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.13312
更新日期:2017-05-01 00:00:00
abstract::We describe here two patients with hypothyroidism due to pituitary-hypothalamic disease in whom basal thyrotrophin (TSH) levels measured by radioimmunoassay (RIA) were elevated yet when measured by a cytochemical bioassay (CBA) were found to be normal. This finding and the absence of the normal rise of thyroid hormone...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1978.tb02174.x
更新日期:1978-05-01 00:00:00
abstract:OBJECTIVE:Mutations in the GH releasing hormone receptor (GHRH-R) have recently been shown to cause autosomal recessive isolated GH deficiency (IGHD). Patients who are homozygous for GHRH-R mutations have a subnormal GH response to pharmacological agents that stimulate GH secretion and an appropriate response to exogen...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2001.01273.x
更新日期:2001-05-01 00:00:00
abstract:OBJECTIVE:A new protocol for postoperative calcium management was developed with the aim of achieving an increase in the proportion of patients being safely discharged on the first postoperative day. We present our experience with the first 50 patients treated under this new protocol. PATIENTS AND DESIGN:A cohort stud...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2008.03317.x
更新日期:2009-02-01 00:00:00
abstract:OBJECTIVE:The standard ACTH test in clinical use employs a pharmacological dose of ACTH which assesses the maximum secretory capacity of the adrenal cortex. We have investigated the responses of plasma adrenocortical steroids including cortisol, aldosterone and dehydroepiandrosterone (DHEA) to physiological doses of AC...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1995.tb02037.x
更新日期:1995-09-01 00:00:00
abstract:BACKGROUND:Hydrocortisone therapy should be individualized in congenital adrenal hyperplasia (CAH) patients to avoid over and under replacement. We have assessed how differences in absorption and half-life of cortisol influence glucocorticoid exposure. PATIENTS AND METHODS:Forty-eight patients (21 M) aged between 6·1 ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/cen.12653
更新日期:2015-04-01 00:00:00
abstract::The paradoxical GH response to TRH observed in certain adolescents with constitutional tall stature is associated with a 60% fall in plasma levels of somatostatin. Conversely, those tall subjects who do not show a GH increase after TRH, or during a saline control infusion maintain steady levels of somatostatin in plas...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1984.tb03232.x
更新日期:1984-10-01 00:00:00
abstract:OBJECTIVE:To test the hypothesis that patients with hyperprolactinaemia due to biologically inactive macroprolactin will not show the characteristically increased dopaminergic inhibition of TSH release seen in patients with microprolactinomas secreting biologically active monomeric PRL. DESIGN:Comparison of the TSH an...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2003.01887.x
更新日期:2003-11-01 00:00:00
abstract::The 'basal' plasma glucose, defined as the stable overnight concentration, has been assessed as an index of diabetes control by comparison with plasma glucose measurements during 24-h profiles in diet-treated maturity-onset diabetic patients and normal subjects. The basal plasma glucose correlated with the total (r=0....
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.1981.tb00196.x
更新日期:1981-03-01 00:00:00
abstract:OBJECTIVE:To assess the relationship between circulating leptin levels, bone mineral content and density in the elderly. DESIGN:A cross-sectional study. PATIENTS:A cohort of 92 men and 171 women, with ages ranging from 68 to 75 years, selected as a healthy and normal functioning group, in the city centre of Verona. ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1046/j.1365-2265.2003.01808.x
更新日期:2003-07-01 00:00:00
abstract:OBJECTIVE:To study circulating adiponectin concentrations in relation to diabetes duration and endogenous insulin secretion in patients with type 1 diabetes. PATIENTS:Patients with haemoglobin A1c (HbA1c) < 6% (reference range 3.6-5.4%) were selected for the study. Twenty-two men and 24 women [age 41.3 +/- 13.8 years ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2006.02666.x
更新日期:2006-12-01 00:00:00
abstract:BACKGROUND:While an association between androgens and the metabolic syndrome (MS) is well established in obese women, studies concerning this relationship are scarce in obese adolescent girls. Therefore, we analysed the relationships between androgens, MS and intima-media thickness (IMT) in this age-group. METHODS:In ...
journal_title:Clinical endocrinology
pub_type: 杂志文章
doi:10.1111/j.1365-2265.2009.03710.x
更新日期:2010-06-01 00:00:00