Abstract：
INTRODUCTION:The overexpression of nitric oxide synthase (NOS) has been found in tumours, including pituitary adenomas. It has also been found that NOS is overexpressed in human spontaneous pituitary adenomas. The question arises whether NOS and its product, nitric oxide (NO), are involved in pituitary tumourigenesis. To investigate this question, in the present paper we examine the effects of NOS inhibition on the development of diethylstilbestrol (DES)-induced prolactin-secreting pituitary tumours in rats. MATERIAL AND METHODS:Thirty male Fisher 344 rats, four weeks old, were submitted to subcutaneous implantation of a silastic capsule containing DES (10 mg/capsule) or of an empty capsule. Six weeks after implantation, some of the DES-treated animals received a NOS inhibitor, N-nitro-l-arginine methyl ester (NAME), 1 mg/mL, in their drinking water, for the subsequent 14 days. Eight weeks after the implantation, all the animals were sacrificed, their pituitaries were weighed, and samples of heart blood were collected for prolactin (PRL) and vascular endothelial growth factor (VEGF) measurements. RESULTS:It was found that DES implantation significantly increased pituitary mass, as well as PRL and VEGF concentrations in blood serum. On the other hand, the administration of NAME did not affect significantly either VEGF concentration or pituitary mass. On the other hand, it did induce a further increase in PRL levels. CONCLUSIONS:These findings indicate that NO is involved in oestrogen-induced hyperprolactinaemia, but does not play a crucial role in oestrogen-induced pituitary tumourigenesis.
journal_name
Endokrynol Poljournal_title
Endokrynologia Polskaauthors
Pawlikowski M,Pisarek H,Fryczak J,Stępień Hsubject
Has Abstractpub_date
2012-01-01 00:00:00pages
115-8issue
2eissn
0423-104Xissn
2299-8306journal_volume
63pub_type
杂志文章abstract：:Elevated levels of serum glucose have deleterious effects on the walls of blood vessels, leading to microangiopathy. Such a destructive process involves also pulmonary circulation, where it is referred to as diabetic pulmonary microangiopathy. This hypothesis has been confirmed in histopathologic examinations of pulmo...
journal_title：Endokrynologia Polska
pub_type： 杂志文章,评审
doi：
更新日期：2011-01-01 00:00:00
abstract：:Acromegaly is usually caused by excess GH (growth hormone) secretion by pituitary adenoma. Extremely rare (< 1% of cases) acromegaly can be a result of ectopic GHRH (growth hormone releasing hormone) secretion by bronchial tubes, lung, pancreatic or intestinal tumor. The aim of this description is to present the case ...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：
更新日期：2006-01-01 00:00:00
abstract：:Obesity and thyroid function are closely related. Thyroid hormones are involved in the regulation of metabolism, thermogenesis, food intake, and fat oxidation. In obese children the most frequent hormonal abnormalities are slight hyperthyrotropinaemia and moderate increases in total T3 and/or fT3 concentrations. Those...
journal_title：Endokrynologia Polska
pub_type： 杂志文章,评审
doi：10.5603/EP.2017.0007
更新日期：2017-01-01 00:00:00
abstract：:Primary aldosteronism is the commonest form of hormone-related hypertension, with an estimated prevalence of 6-13% in the generalpopulation of hypertensive patients. Among patients with resistant hypertension, the proportion of PA is even higher. Through intensiveresearch in the field of basic science and the creation...
journal_title：Endokrynologia Polska
pub_type： 杂志文章,评审
doi：10.5603/ep.2013.0011
更新日期：2013-01-01 00:00:00
abstract：BACKGROUND:We evaluated the predictive value of IGF-1 against hGH in the treatment outcome. MATERIAL AND METHODS:A prospective study was undertaken of 47 patients (mean age 41.1 ± 12.9 years; 44 with macroadenoma and 3 with microadenoma), requiring treatment with octreotide LAR (SSLAR) following incomplete surgery. Co...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：
更新日期：2011-01-01 00:00:00
abstract：:The clinical manifestation of oncogenic osteomalacia includes bone pain, pathological fractures, general fatigue and muscle weakness. Such unspecific symptoms hinder the establishment of a proper diagnosis which very often requires long-lasting investigations with many diagnostic imaging methods. Here, we discuss di...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：
更新日期：2012-01-01 00:00:00
abstract：INTRODUCTION:Dysregulation of adipokine secretion and action is a characteristic feature of obesity and a key clinical feature of Cushing's syndrome (CS). We have investigated whether endogenous glucocorticoid excess influences adipose tissue-derived gene expression. MATERIAL AND METHODS:mRNA expression of adipokines;...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：10.5603/EP.a2018.0091
更新日期：2019-01-01 00:00:00
abstract：INTRODUCTION:The recent investigations point out the significant role of oxidative stress in the development of thyroid gland disease. The present study was designed to investigate the variation of oxidative stae in women with non-autoimmunological subclinical hyperthyroidism. MATERIAL AND METHODS:The study was conduc...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：
更新日期：2009-05-01 00:00:00
abstract：INTRODUCTION:Calcitonin gene-related peptide is an important vasodilator. It plays an important role in the metabolism of chewing muscles. The aim of the study was to evaluate the plasma level of CGRP in patients with myofascial pain (RDC/TMD Ia) and myofascial pain with limited opening (RDC/TMD Ib) before and after oc...
journal_title：Endokrynologia Polska
pub_type： 杂志文章,随机对照试验
doi：10.5603/EP.2017.0025
更新日期：2017-01-01 00:00:00
abstract：INTRODUCTION:Thyroid hormone disorders in patients with chronic kidney disease (CKD) are a result of impaired conversion of T4 to T3. The importance of kidneys in thyroid hormones conversion is not fully understood. The activities of different types of iodothyronine deiodinases in the kidney structures have not been de...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：
更新日期：2013-01-01 00:00:00
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journal_title：Endokrynologia Polska
pub_type： 杂志文章,评审
doi：10.5603/EP.2016.0061
更新日期：2016-01-01 00:00:00
abstract：:The paper presents actual data concerning osteoporotic fractures (definitions, causes, epidemiologic and clinical data, consequences, treatment) particulary data about the most common fractures (distal forearm, vertebral and proximal hip fractures). ...
journal_title：Endokrynologia Polska
pub_type： 杂志文章,评审
doi：
更新日期：2009-11-01 00:00:00
abstract：:Many mechanism may participate in the inhibition of thyroid function by excess of iodine. The present study was aimed at answering the question, whether the excess of iodine influences the activity of type I thyroxine 5'-deiodinase. To 40 female rats fed with standard diet a dose of 42 micrograms of iodine daily was a...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：
更新日期：1993-01-01 00:00:00
abstract：INTRODUCTION:Ghrelin is a polypeptide hormone secreted mainly by the stomach cells, stimulating food intake and growth hormone release. Decreased plasma ghrelin concentration was found in obese subjects. Clinical and experimental data suggest that ghrelin also exerts a blood pressure lowering property. The influence of...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：
更新日期：2010-01-01 00:00:00
abstract：:Epidemiological foundation included: aim of studies, knowledge about epidemiology of thyroid disorders in Poland, evaluation of radioiodine dose accumulated in thyroids of inhabitants of different age living in different par of Poland, information about relative diet iodine deficiency in different parts of Poland and ...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
abstract：INTRODUCTION:This study presents a 10-year longitudinal assessment of bone status in adolescents and young adults with type 1 diabetes (T1D). MATERIAL AND METHODS:Thirty-two patients (12 female, aged 20.5 ± 3.93 years, T1D duration 13.9 ± 1.97 years) were studied using quantitative ultrasound (QUS) and dual-energy X-r...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：10.5603/EP.a2020.0080
更新日期：2020-01-01 00:00:00
abstract：INTRODUCTION:Sleep-related breathing disorders (SRBD) are commonly present in patients with Prader-Willi syndrome (PWS). Recombinant human growth hormone (rhGH) treatment is reported to improve breathing function in PWS, but the findings are not explicit. MATERIAL AND METHODS:Screening polysomnography- polygraphy (PSG...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：10.5603/EP.a2017.0057
更新日期：2017-01-01 00:00:00
abstract：:The treatment of Graves' orbitopathy (GO) remains a diagnostic and therapeutic challenge for clinicians worldwide. The elimination of risk factors, such as encouraging smoking cessation and achieving euthyroidism, are the most important and usually sufficient treatment methods in most mild cases. A course of selenium ...
journal_title：Endokrynologia Polska
pub_type： 杂志文章,评审
doi：10.5603/EP.2014.0054
更新日期：2014-01-01 00:00:00
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journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：10.5603/EP.a2017.0009
更新日期：2017-01-01 00:00:00
abstract：:Not required for Clinical Vignette. ...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：10.5603/EP.a2019.0045
更新日期：2020-01-01 00:00:00
abstract：:The authors present the current knowledge on the intracellular mechanisms of thyroid hormone action in the cardiomyocytes. Many of the clinical manifestations of thyroid diseases are due to the ability of thyroid hormone to alter cardiovascular hemodynamics. Triiodothyronine affects the hemodynamic state mainly by its...
journal_title：Endokrynologia Polska
pub_type： 杂志文章,评审
doi：
更新日期：2006-03-01 00:00:00
abstract：:According to the socio-sexological reports approximately 40-45% of women and up to 30% of males may suffer from different sexual dysfunctions. The prevalence of those disorders is gradually increasing with age. Multiply numbers of endocrinopathies may influence the human sexual life. In diabetic patients all phases of...
journal_title：Endokrynologia Polska
pub_type： 杂志文章,评审
doi：
更新日期：2005-11-01 00:00:00
abstract：INTRODUCTION:After thyroidectomy and radioiodine therapy, patients with differentiated thyroid cancer (DTC) are indefinitely treated with levothyroxine (L-T4). Osteoporosis is a debated consequence of hypothyroxinaemia. The aim of this study was to evaluate bone mineral density (BMD) and fracture risk assessed by FRAX ...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：10.5603/EP.a2016.0046
更新日期：2016-01-01 00:00:00
abstract：:The effect of cholecystokinin octapeptide (CCK-8) on basal and TRH-stimulated secretion of TSH was investigated in 67 male Sprague-Dawley rats. Blood for TSH determinations was sampled by cannulation of right heart auricle in urethane narcosis before and four times during 60 minutes following CCK-8 administration. It ...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：
更新日期：1989-01-01 00:00:00
abstract：BACKGROUND:Tumor induced osteomalacia (TIO) are extremely rare paraneoplastic syndrome with less than 300 reported cases. This report highlights the pitfalls and challenges in diagnosing and localizing TIO in patients with refractory and resistant osteomalacia. PATIENT AND METHODS:41- year gentleman with 4-year histor...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：10.5603/EP.a2018.0016
更新日期：2018-01-01 00:00:00
abstract：INTRODUCTION:Estimation of malignancy in thyroid follicular neoplasms is a common diagnostic problem, thus revealing of differences in expression of some antigens in both benign and malignant lesions seems to be essential. The aim of this study is to evaluate the immunohistochemical expression of CD15, galectin-3 and H...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：
更新日期：2006-07-01 00:00:00
abstract：INTRODUCTION:EUS-guided ethanol ablation of insulinoma is a new method of treatment of this neuroendocrine tumour. Ablation is recommended in patients who are poor surgical candidates or refuse surgery. We present a case of an 81-year-old female with symptomatic insulinoma, treated successfully with EUS-guided alcoholi...
journal_title：Endokrynologia Polska
pub_type： 杂志文章,评审
doi：10.5603/EP.2017.0053
更新日期：2017-01-01 00:00:00
abstract：INTRODUCTION:Despite considerable progress in knowledge, ischaemic stroke is still a disease that causes serious clinical problems. A role in its pathogenesis can be attributed to i.a. adipose tissue hormones. The aim of this paper is to assess the blood levels of selected adipocytokines in patients during the acute ph...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：10.5603/EP.a2019.0057
更新日期：2020-01-01 00:00:00
abstract：:One severe aplastic anaemia case who presented autoimmune thyroid disease after allogeneic bone marrow transplantation (alloBMT) is described. A 19 year old Polish girl developed Graves' hyperthyroidisms 19 months after allogeneic BMT for severe aplastic anaemia (SAA) donated from her brother. Her serum was positive f...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：
更新日期：2006-09-01 00:00:00
abstract：INTRODUCTION:Patients with Addison's disease experience many somatic and psychic changes, which decrease their quality of life. The aim of the study was to evaluate the "psychological equipment" of these patients to cope with stress connected with this chronic disease and the challenge of constant treatment. MATERIAL ...
journal_title：Endokrynologia Polska
pub_type： 杂志文章
doi：
更新日期：2010-01-01 00:00:00
