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 in an academic clinical facility involving 234 women with PCOS. Patients were divided into two groups based on an LH/FSH ratio < or >1 and hormonal and metabolic studies were performed in both groups. Factors were determined by binomial logistic regression that predicted group membership of these women. RESULTS:Higher follicular phase estradiol (E2) and androstenedione (A4) levels as well as greater insulin sensitivity were the only factors that predicted the presence of neuroendocrine dysfunction with elevated A4 being necessary for neuroendocrine dysfunction. CONCLUSIONS:It was concluded that uncoupling of hypothalamic E2 inhibition by elevated ovarian A4 associated with E2 related sensitization of pituitary LH leads to neuroendocrine dysfunction in PCOS.
journal_name
J Endocrinol Investjournal_title
Journal of endocrinological investigationauthors
Doi SA,Al-Zaid M,Towers PA,Scott CJ,Al-Shoumer KAdoi
10.1007/BF03345319keywords:
subject
Has Abstractpub_date
2005-11-01 00:00:00pages
882-92issue
10eissn
0391-4097issn
1720-8386pii
2599journal_volume
28pub_type
杂志文章abstract:BACKGROUND:Agents capable of increasing radioiodine concentration by stimulating the sodium/iodide symporter (NIS) expression have been extensively investigated for the treatment of certain well-differentiated breast cancers. AIM:In this study, we analyzed the regulation of the NIS and lactoperoxidase (LPO) gene expre...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03346542
更新日期:2010-01-01 00:00:00
abstract::It is well accepted that mortality in acromegaly is increased because of cardiovascular and respiratory diseases while neoplastic complications account less to mortality. Amongst different cardiovascular complications the most frequent is biventricular hypertrophy, which occurs independently of hypertension and metabo...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:
更新日期:2005-01-01 00:00:00
abstract::Human gonadotropins are widely used for induction of ovulation in the treatment of anovulatory infertility and for induction of multiple follicular development (MFD) in in vitro fertilization (IVF), gamete intrafallopian transfer (GIFT), and artificial insemination with husband's semen (AIH) programs. Reported is a pa...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03349615
更新日期:1990-10-01 00:00:00
abstract:BACKGROUND:Adiponectin has emerged over the last decade as a key adipokine linking obesity, insulin resistance, and Type 2 diabetes. However, the molecular mechanisms controlling adiponectin expression in adipose tissue are not fully elucidated. Furthermore, increasing evidence indicates that peroxisome proliferator-ac...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347056
更新日期:2011-02-01 00:00:00
abstract::Benign thyroid nodules represent a very common disorder, the management of which is still controversial. The aim of the present work was to evaluate by ultrasound examination the volume changes of thyroid nodules in post-menopausal women presenting single palpable nodular goiter of recent onset (less than 6 months fro...
journal_title:Journal of endocrinological investigation
pub_type: 临床试验,杂志文章
doi:10.1007/BF03350907
更新日期:2004-01-01 00:00:00
abstract::Total and free thyroid hormones (T3, T4, FT3, FT4), TSH and PRL were determined in basal conditions and after stimulation with TRH in 32 patients affected by autonomous thyroid nodules before and after nodulectomy and in 24 control subjects. Only 7 patients were clinically thyrotoxic and thyroid hormone concentrations...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350607
更新日期:1983-06-01 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:OBJECTIVE:To determine whether glycated hemoglobin (HbA1c) could be used to diagnose Type 2 diabetes mellitus in She Chinese People and to assess the role of HbA1c in the development of cardiovascular disease. RESEARCH DESIGN AND METHODS:An ethnically representative sample of 687 (277 males and 410 females) adults, 20...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,随机对照试验
doi:10.3275/7749
更新日期:2012-01-01 00:00:00
abstract::The effects of short term administration of 200 MRC U of synthetic salmon calcitonin (sCT) daily on carbohydrate metabolism were investigated in 10 patients with various bone diseases, 3 of whom had type II diabetes mellitus and 3 of whom had impaired glucose tolerance. Blood glucose levels during the nocturnal postab...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350629
更新日期:1985-02-01 00:00:00
abstract::Hyperthyroidism is rare in early childhood and most commonly caused by Graves' disease. We report 14 children (4 boys, 10 girls) aged 3.4-7.5 yr. At diagnosis, all patients had weight loss, hyperkinetic activity, tachycardia, difficulty sleeping, and poor concentration and 11 presented with proptosis. Four patients de...
journal_title:Journal of endocrinological investigation
pub_type: 临床试验,杂志文章
doi:10.1007/BF03346315
更新日期:2007-05-01 00:00:00
abstract::The syndrome of apparent mineralocorticoid syndrome (AME) results from defective 11beta-hydroxysteroid dehydrogenase 2 (11beta-HSD2). This enzyme is co-expressed with the mineralocorticoid receptor (MR) in the kidney and converts cortisol to its inactive metabolite cortisone. Its deficiency allows the unmetabolized co...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03343755
更新日期:2000-07-01 00:00:00
abstract:BACKGROUND:Adipose tissue has been suggested to influence bone density and metabolism through the effect of some adipokines. However, whether adiponectin and visfatin may correlate with bone metabolism is still unclear. AIM:The aim of this study was to investigate the relationship of adiponectin and visfatin with bone...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03346703
更新日期:2011-01-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to investigate the hypothesis that interleukin-1beta (IL-1beta) might be involved in the increase of the circulating levels of placental-derived CRH leading to the initiation of pre-term labor. SUBJECTS AND METHODS:Forty-eight primigravidae with a singleton viable pregnancy between ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03347393
更新日期:2007-01-01 00:00:00
abstract:PURPOSE:The objectives were to assess the prevalence of overweight/obesity, abdominal obesity and metabolic syndrome (MetS), and to evaluate the characteristics of the metabolically unhealthy lean (MUHL) and metabolically healthy overweight/obese (MHO) phenotypes in a Romanian population-based sample from the PREDATORR...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-016-0470-4
更新日期:2016-09-01 00:00:00
abstract::There has been a substantial increase in women practicing sports over the past 30 yr. While exercise provides many health benefits, there appears to be a unique set of risks associated with intense exercise for the female athlete. The female athlete triad encompasses these risks, including amenorrhea, osteoporosis and...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章,评审
doi:10.1007/BF03345238
更新日期:2003-09-01 00:00:00
abstract::In 1992 a significant relationship between bone turnover and the vitamin D receptor (VDR) genotype was reported in Australian subjects of UK-Irish decent. Since then, several groups have investigated the relationship between VDR and other bone-related genotypes, bone mass and bone turnover in several populations. Howe...
journal_title:Journal of endocrinological investigation
pub_type: 临床试验,杂志文章
doi:10.1007/BF03343853
更新日期:2001-04-01 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: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:BACKGROUND:Acromegaly is known to be associated to vascular damage characterized by an increase of vascular wall thickness and an impairment of vascular function. AIM:The aim of this study was to evaluate the effect of medical treatment with the GH receptor antagonist pegvisomant on vascular structure and function in ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03346667
更新日期:2010-10-01 00:00:00
abstract::It has been shown that human calcitonin (hCT) is absorbed through the nasal mucosa when administered together with promoters like sodium glycocholate (SGC) or dihydrofusinate. The aim of this study was to compare the clinical and metabolic effect of intranasal (in) and intramuscular (im) hCT in patients with osteoporo...
journal_title:Journal of endocrinological investigation
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF03350260
更新日期:1991-01-01 00:00:00
abstract::The calcitonin (CT) concentration has been determined in the serum of 17 patients with different pituitary diseases. More or less elevated levels were found in 7 of them. No definite correlation has been observed between the immunoreactive CT and the different pituitary hormones. ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348221
更新日期:1980-01-01 00:00:00
abstract::The assessment of growth hormone (GH) secretory status is often difficult because of the intermittent nature of GH release and resulting wide swings in plasma GH levels. Urinary GH excretion holds promise as an index of integrated plasma GH free of this limitation, but technical problems have prevented its use until r...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03350732
更新日期:1989-07-01 00:00:00
abstract::Fifty-seven (35.6%) of 160 patients with papillary thyroid carcinoma had lymph node metastases at the primary treatment. Children and adolescents were most frequently affected (69.2%), followed by the age group of 21-40-year olds (38.8%). Those older than 40 had the lowest incidence of lymph node metastases (29.6%; p ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03346863
更新日期:1991-07-01 00:00:00
abstract::We examined the distribution of nuclear T3 in mature rat brain with the aim of determining specific targets of thyroid hormones within this tissue. Saturation experiments, performed in 9 different structures of the brain and in 4 parts of the cortex, revealed the presence of a single class of binding sites with a mean...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03348511
更新日期:1985-08-01 00:00:00
abstract::Reportedly, the responsiveness of somatotrope cells to GHRH is reduced in elderly humans but it is totally restored by arginine (ARG) which likely acts by inhibiting hypothalamic release of somatostatin. As this effect was observed after infusion of high doses of the amino acid, in this study, we compared the effect o...
journal_title:Journal of endocrinological investigation
pub_type: 临床试验,杂志文章
doi:10.1007/BF03347695
更新日期:1994-02-01 00:00:00
abstract:BACKGROUND:Apart from waist circumference, other adiposity measures, such as subscapular skin fold (SST), arouse growing interest due to their relationship to metabolic complications and cardiovascular risk. The IGF-I system is deregulated in obese subjects in proportion to their degree of visceral adiposity. AIM:To e...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.3275/8511
更新日期:2012-11-01 00:00:00
abstract::IGF-I stimulates protein synthesis, lowers blood glucose, and affects cell differentiation. The main production site of IGF-I is the liver. One of its binding proteins, IGFBP-1, is also produced by the liver. It is well known that ethanol affects the function of the human liver. Long-term alcohol abuse may therefore n...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03343879
更新日期:2001-07-01 00:00:00
abstract::In six patients suffering from amyotrophic lateral sclerosis we evaluated changes of T4, T3, TSH, PRL, and GH during treatment by continuous iv infusion of TRH for at least 15 days. No clinical improvement was detected. A significant rise of thyroid hormone levels was observed, as well as an upward trend of basal TSH ...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03349584
更新日期:1990-09-01 00:00:00
abstract:PURPOSE:To determine the incidence and determinants of developing abnormalities on the 12-lead electrocardiogram (ECG) in persons with type 1 diabetes. METHODS:We evaluated the distribution of ECG abnormalities and risk factors for developing new abnormalities in 266 (mean age = 44 years ± 9.0; 50 % female) people wit...
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/s40618-016-0564-z
更新日期:2017-03-01 00:00:00
abstract::The renin-angiotensin-aldosterone system (RAAS) plays a well-recognized role in the regulation of BP and in salt and water balance. Since hypertension affects a considerable proportion of obese patients, circulating RAAS has been studied in obese subjects with and without hypertension, albeit with conflicting results....
journal_title:Journal of endocrinological investigation
pub_type: 杂志文章
doi:10.1007/BF03344010
更新日期:2002-04-01 00:00:00