Abstract:
:To investigate whether inappropriate LH secretion in Polycystic Ovary Syndrome (PCO) was related to a reduction of inhibitory opioid control on the GnRH-LH system, 23 women affected by PCO (12 obese, BMI: 37.1 +/- 3.9 and 11 non obese, BMI: 21.5 + 2.4) and 19 fertile women (10 obese, BMI: 38.8 + 1.8 and 9 non obese, BMI: 20.1 + 1.5) were studied. Plasma levels of Beta-Endorphin (B-Ep) in basal condition and LH and FSH serum levels following acute administration of naloxone (0.1 mg/kg e.v.) were evaluated in the PCO and control groups. Moreover, in order to investigate whether the neuroendocrine abnormalities in PCO are a primary hypothalamic defect or secondary to an inappropriate feedback of gonadal steroids, the LH response following Naloxone administration was evaluated again after two months of clomiphene therapy (50 mg p.os ones a day for 5 days). The women affected by PCO had increased LH/FSH ratio, testosterone levels (P < 0.001, P < 0.01) and significantly decreased T/E2 ratio, SHBG levels compared to the normal women (P < 0.01, P < 0.001). B-Ep plasma levels in PCOs OB and PCOs nOB (6.13 + 1.2 Pmol/L, 4.8 + 0.4 Pmol/L) were similar to those observed in obese and non obese control women (7.2 + 2.5 Pmol/L, 4.2 + 1.3 Pmol/L), respectively. In the PCO and control groups naloxone induced a significant increase of FSH and LH levels. Thus the area under the curve of LH and FSH was significant higher after naloxone, than following saline infusion both in PCO (P < 0.01, P < 0.05) and controls (P < 0.001, P < 0.001). However, in PCO the post naloxone FSH increase was similar to that found in fertile women, while the LH increase post naloxone was lower than that observed in controls (50 + 32.4% vs 101.6 + 36.7%; P < 0.01). Particularly in PCO with LH/FSH ratio equal or higher than 3, no significant variation of LH levels was found after naloxone. Moreover the LH increase post naloxone was similar in PCO OB (46 + 19.8%) and in PCO nOB (49.9 + 13.1%), correlated negatively with LH basal levels (P < 0.02), LH/FSH (P < 0.005), E1/E2 (P < 0.005) and was independent of T/E2, BMI and duration of the disease. Following clomiphene treatment, the LH response after naloxone was significantly higher than that observed before treatment (from 9.4 + 4.2 mUI/ml to 16.5 + 3.9 mUI/ml, P < 0.001).(ABSTRACT TRUNCATED AT 400 WORDS)
journal_name
Minerva Endocrinoljournal_title
Minerva endocrinologicaauthors
Barletta C,Vagiri D,Scavo Dkeywords:
subject
Has Abstractpub_date
1992-07-01 00:00:00pages
107-19issue
3eissn
0391-1977issn
1827-1634journal_volume
17pub_type
杂志文章abstract::A 54-year-old woman presented with an expansive mass in the anterior cervical region (front of the neck) with abscess. Laboratory tests and thyroid profile proved normal. Surgical exploration revealed a hydatid cyst in the left lobe of the thyroid gland with parasitic metastasis of the left lateral cervical lymph node...
journal_title:Minerva endocrinologica
pub_type: 杂志文章
doi:
更新日期:1999-06-01 00:00:00
abstract::The coexistence of Graves' disease and insulin-dependent diabetes mellitus is well known among autoimmune polyglandular syndromes and sustained by common underlying immune pathogenic factors. Hyperthyroidism itself may lead to impaired glucose tolerance in subjects with intact beta-cell function through various not we...
journal_title:Minerva endocrinologica
pub_type: 杂志文章
doi:
更新日期:1992-04-01 00:00:00
abstract:BACKGROUND:Whether Doppler ultrasonography (DU) may be of help in characterizing thyroid nodes is still under debate: both good and unsatisfactory results have been claimed, either in evaluating the presence of malignancy or in identifying hyperfunctional structures. METHODS:In this paper, the scintigraphic and Dopple...
journal_title:Minerva endocrinologica
pub_type: 临床试验,杂志文章
doi:
更新日期:1999-03-01 00:00:00
abstract::Diabetological care in pre-gestational (preGDM) and gestational (GDM) pregnant diabetic is an indispensable factor for the reduction of risk of mother, fetus and newborn complications. The adoption of an intensified therapy, aiming at maintaining almost normal glycemic values, and the improvement in fetal monitoring h...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:1994-06-01 00:00:00
abstract::Medullary thyroid carcinoma arises from the C cells, which produce a characteristic hormone, calcitonin. At present, surgery is the main treatment modality. Medullary thyroid carcinoma is usually treated with total thyroidectomy and with removal of nodes in the central portion of the neck and upper mediastinum. Cervic...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:1998-12-01 00:00:00
abstract::Subclinical hypothyroidism - i.e., a condition characterized by serum TSH concentrations above the normal reference range in the presence of normal serum T4 levels - affects 4 to 20% of the population living in iodine-sufficient areas. The present work reviews the clinical challenges regarding, on the one hand, the si...
journal_title:Minerva endocrinologica
pub_type: 杂志文章
doi:10.23736/S0391-1977.20.03176-4
更新日期:2020-08-03 00:00:00
abstract:UNLABELLED:Anaplastic thyroid cancer (ATC) is a rare aggressive tumor arising from the follicular cells of the thyroid gland (as does well differentiated thyroid cancer, WDTC), but ATC cells do not retain any of the biological features of the original follicular cells, such as uptake of iodine and synthesis of thyroglo...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:2008-12-01 00:00:00
abstract::The presence of islet cell autoantibodies (ICA), and especially of glutamic acid decarboxylase autoantibodies (GAD65Ab), in patients with non-insulin-dependent diabetes mellitus identifies the so-called latent autoimmune diabetes in the adult (LADA). LADA patients have an increased risk for developing insulin deficien...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:2003-12-01 00:00:00
abstract::The treatment of NIDDM patients with secondary failure to sulfonylureas is still a debated problem. In this study we compared in NIDDM patients with secondary failure to glyburide, the effect of adding a single, low-dose bed time either NPH or ultralent insulin injection (0.15-0.2 U/kg) to the previously ineffective s...
journal_title:Minerva endocrinologica
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1996-06-01 00:00:00
abstract:BACKGROUND:The aim of this study was to evaluate long-term effectiveness and safety of liraglutide in real world. METHODS:A diabetes clinic in Italy systematically collected data of all patients treated with liraglutide. Generalized hierarchical linear regression models for repeated measures were applied to assess tre...
journal_title:Minerva endocrinologica
pub_type: 杂志文章
doi:
更新日期:2016-03-01 00:00:00
abstract:AIM:The efficacy of low and high fixed dose radioactive iodine (RAI) therapy in patients with toxic nodular goiter was investigated. METHODS:Ninety-three patients (25 males, 68 females) were included into the study (32 patients with toxic adenoma, 61 patients with toxic multinodular goiter). Patients were treated with...
journal_title:Minerva endocrinologica
pub_type: 杂志文章
doi:
更新日期:2011-06-01 00:00:00
abstract::The pathogenesis of Polycystic Ovary Syndrome (PCOs) is not well known till now. Previous reports indicated an hyperinsulinemia and insulin resistance in obese and non obese PCOs. However the role of hyperinsulinemia in PCOs pathogenesis is not completely understood. In this study we evaluated the glycemic and insulin...
journal_title:Minerva endocrinologica
pub_type: 杂志文章
doi:
更新日期:1994-03-01 00:00:00
abstract::Controversies surround the view that the blood-bone ionic equilibrium is controlled by ionic changes at a so called "bone membrane" that display a pump-leak mechanism able to maintain a concentration gradient for chloride in addition to that for calcium, sodium and potassium. On the other hand it is known that a chlor...
journal_title:Minerva endocrinologica
pub_type: 杂志文章
doi:
更新日期:1992-07-01 00:00:00
abstract::We treated with PEI 81 patients carriers of autonomous thyroid nodule, 65 toxic and 16 non toxic, all with undetectable serum TSH and suppressed extranodular tissue on scintigraphy. The treatment schedule was: 1-2 sessions per week, 1-8 ml per session, 3-13 sessions in total, In relation to the size and the therapeuti...
journal_title:Minerva endocrinologica
pub_type: 杂志文章
doi:
更新日期:1993-12-01 00:00:00
abstract:BACKGROUND:Mild hypothyroidism (thyroid stimulating hormone [TSH] less than 10 mIU/L) induces reversible cognitive dysfunction, which can be evaluated by event related potentials (ERP). So far, only little is known about the impact of subclinical hypothyroidism on ERP as electrophysiological markers of cognitive activi...
journal_title:Minerva endocrinologica
pub_type: 杂志文章
doi:10.23736/S0391-1977.16.02327-0
更新日期:2017-03-01 00:00:00
abstract::Sex steroids are essential for reproduction and development in animals and humans, and sex steroids also play an important role in neuroprotection following brain injury. New data indicate that sex-specific responses to brain injury occur at the cellular and molecular levels. This review summarizes the current underst...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:2010-06-01 00:00:00
abstract::The present insulin preparations are not ideal for diabetes therapy by subcutaneous administration, subcutaneous insulin absorption is too slow to mimic the normal rapid increments of insulin in blood in response to nutrient intake. The absorption of insulin from subcutaneous tissue is influenced by many factors, amon...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:1996-03-01 00:00:00
abstract::New-onset diabetes after transplantation (NODAT) or posttransplant diabetes mellitus is a frequent metabolic complication of organ transplantation. Diabetes incidence rates among transplant recipients are higher than in the general population. The estimated rates are 9-18% after kidney, 20-33% after liver, 26-40% afte...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:2012-09-01 00:00:00
abstract::Adrenal scintigraphy using 131I-6-beta-iodomethyl-19-norcholesterol or 6-methyl-75Se-methyl-19-norcholesterol is a function-dependent imaging method which, in association with high-resolution spatial imaging techniques, plays an essential role in the study of adrenocortical hyperfunction. It can distinguish between bi...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:1995-03-01 00:00:00
abstract::The majority of patients with differentiated thyroid cancer are cured with standard primary treatments including surgery, radioactive iodine and TSH suppression. A small proportion of patients who develop radioactive iodine-refractory metastatic disease have few treatment options. Recent discovery of the molecular mec...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:2012-12-01 00:00:00
abstract::Growth hormone-releasing hormone (GHRH) is a hypothalamic hormone that is essential for normal expansion of the somatotrope lineage during pituitary development. Decreased GHRH secretion and/or action leads to impairment of this process and somatotrope hypoplasia in both humans and experimental animals. Excessive GHRH...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:2002-12-01 00:00:00
abstract::In health, growth hormone (GH) is secreted in a circadian rhythm with superimposed pulsatility. Temporal fluctuations of hormone concentrations are essential for physiological action, and loss of diurnal rhythm is important in the development of disease. GH feedback occurs through the hypothalamus and involves neurope...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:2003-03-01 00:00:00
abstract::The desire to reproduce is a base human instinct. However, for many individuals, the chances of being able to have a genetic child are compromised by a number of factors. For some, therapies aimed at treating serious medical illness, such as cancer; result in a deleterious impact on the function of eggs and sperm in t...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:10.23736/S0391-1977.17.02666-9
更新日期:2018-03-01 00:00:00
abstract::Breast cancer is the second most frequent type of cancer worldwide and the most commonly occurring malignancy in women, and its incidence is increasing in most developed and developing countries. There is growing evidence that lifestyle factors, in particular diet may be associated with higher Breast Cancer risk. Some...
journal_title:Minerva endocrinologica
pub_type: 杂志文章
doi:10.23736/S0391-1977.20.03266-6
更新日期:2020-09-24 00:00:00
abstract::Central adrenal insufficiency (AI) represents a life-threatening disorder that results from a reduced cortisol production due to an impairment production of adrenocorticotropic hormone (ACTH). In particular, secondary AI results from pituitary disease that impedes the release of ACTH, while tertiary AI is caused from ...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:10.23736/S0391-1977.17.02701-8
更新日期:2018-06-01 00:00:00
abstract::The World population is facing a health challenge never seen since the Spanish influenza of one hundred years ago. During the last months, the scientific community has been debating on the potential harmful effect of Angiotensin-converting-enzyme inhibitors (ACEi) or Angiotensin II receptor Type 1 receptor blockers (A...
journal_title:Minerva endocrinologica
pub_type: 杂志文章
doi:10.23736/S0391-1977.20.03402-1
更新日期:2021-01-12 00:00:00
abstract::Obesity has become a national epidemic and a disease of global magnitude. The numbers of patients with obesity have grown exponentially in the last 10 years to the degree that the Centers for Disease Control and Prevention reports that one third of the US population is obese. The prevalence of diabetes has grown by mo...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:2013-06-01 00:00:00
abstract::Nodular goiter encompasses a spectrum of diseases from the incidental asyntomatic small solitary nodule to the large intrathoracic goiter causing pressure symptoms as well as functional complaints. The mainstay in the diagnostic evaluation is related to functional and morphological characterization with serum thyroid-...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:2010-09-01 00:00:00
abstract::Gestational diabetes mellitus (GDM) is diabetes that is first diagnosed in the second or third trimester of pregnancy in patients who did not have a history of diabetes before pregnancy. Consequences of GDM include increased risk of macrosomia and birth complications in the infant and an increased risk of maternal typ...
journal_title:Minerva endocrinologica
pub_type: 杂志文章
doi:10.23736/S0391-1977.20.03192-2
更新日期:2020-09-01 00:00:00
abstract::The characterisation of adrenal lesions is a common radiological dilemma. Incidental adrenal lesions are commonly detected with computed tomography (CT), and lesion characterisation is critical. The prevalence of incidental adrenal lesions has been reported to be 2.3% at autopsy and 0.5-2% with abdominal CT. Such lesi...
journal_title:Minerva endocrinologica
pub_type: 杂志文章,评审
doi:
更新日期:2009-06-01 00:00:00