Abstract:
:Leptin is a key mediator in the maintenance of neuroendocrine homeostasis. The aim of this study was to determine the changes in serum leptin, tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), nitric oxide (NO) levels in patients with hyperprolactinemia. The study consists of 16 consecutive patients with high prolactin (PRL) levels (group I) and a control group of 11 normoprolactinemic patients (group II). Pituitary tumor tissues of patients in groups I and II were analyzed for immunohistochemical (IHC) expression of prolactin and leptin. Group I has significantly higher levels of leptin than group II (P < 0.001). There is a strong correlation between PRL and leptin concentrations in group I. However, there were no statistically significant differences for NO, TNF-alpha, IL-6 between the two groups. IHC staining showed that there was strong immunoreactivity for leptin protein in PRL-secreting pituitary adenomas. Double immunostaining of adenoma tissues with PRL and leptin showed that the adenoma cells expressed both. These findings together are suggestive that leptin co-secretion from a prolactinoma may be the cause of increased serum leptin concentration, independently from the peripheral action of prolactin.
journal_name
Pituitaryjournal_title
Pituitaryauthors
Balci H,Akgun-Dar K,Gazioglu N,Kapucu A,Bolayirli M,Oz Bdoi
10.1007/s11102-008-0140-4subject
Has Abstractpub_date
2009-01-01 00:00:00pages
170-6issue
3eissn
1386-341Xissn
1573-7403journal_volume
12pub_type
杂志文章相关文献
Pituitary文献大全abstract::The morphology of the various pituitary cell types is highly dynamic and allows recognition of many cellular functions. Most pituitary cells show morphologic changes that reflect stimulation or inhibition by hormones. Drugs have also been shown to alter the morphology of several pituitary tumor types, allowing a measu...
journal_title:Pituitary
pub_type: 杂志文章,评审
doi:10.1023/a:1022320732718
更新日期:2002-01-01 00:00:00
abstract:PURPOSE:Survivin is an apoptosis inhibitor, expressed in almost all types of human malignancies, but rarely in differentiated normal tissues. Recently, survivin gene splice variants with different anti-apoptotic activities have been reported. The current study was undertaken to examine the expression of survivin and it...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-014-0590-9
更新日期:2015-06-01 00:00:00
abstract:BACKGROUND:Suprasellar pituitary adenomas (SPAs) are a special type of pituitary adenoma. Although dozens of SPA cases have been reported, the exact definition and the characteristics of SPA have not been exhaustively discussed before. METHODS:In a retrospective electronic medical records review, 13 patients with SPA ...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-020-01043-1
更新日期:2020-08-01 00:00:00
abstract::In this report we emphasize the opportunity of considering the uncommon causes of chronic GH-excess in the initial diagnostic process, such as GHRH hypersecretion, especially in the presence of ambiguous pituitary neuroimaging. This topic may have an important clinical significance in order to plan the most cost-effec...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-008-0146-y
更新日期:2010-09-01 00:00:00
abstract::Non-functioning pituitary carcinomas (NFPC) are defined as tumours of adenophyseal origin with craniospinal or systemic dissemination, with the absence of a hormonal hypersecretion syndrome. These are a histologically heterogenous group of tumours, comprising gonadotroph, null cell, "silent" tumours of corticotroph, s...
journal_title:Pituitary
pub_type: 杂志文章,评审
doi:10.1007/s11102-017-0857-z
更新日期:2018-04-01 00:00:00
abstract::Acromegaly is a consequence of chronic growth hormone (GH) excess, due in the majority of cases to a GH-secreting pituitary adenoma, and occurring with a population prevalence of 60 per million and an incidence of 3-4 per million per year. Males and females appear to be equally affected with an average age of presenta...
journal_title:Pituitary
pub_type: 杂志文章,评审
doi:10.1023/a:1009965803750
更新日期:1999-06-01 00:00:00
abstract::Although leptin was originally viewed as an antiobesity hormone, it is now evident that it may have more pleiotropic actions. Experiments in rodents have shown that leptin activates the sympathetic nervous system, is involved in regulation of blood pressure, hematopoiesis, immune function, angiogenesis and brain, bone...
journal_title:Pituitary
pub_type: 杂志文章,评审
doi:10.1023/a:1012938308654
更新日期:2001-01-01 00:00:00
abstract:INTRODUCTION:Temozolomide (TMZ) is an oral alkylating agent that has been used over the past 8 years to treat aggressive pituitary tumors resistant to conventional therapy. To date, only 25 patients treated with TMZ for ACTH producing pituitary tumors (14 adenomas and 11 carcinomas) have been reported. MATERIALS AND M...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-015-0694-x
更新日期:2016-04-01 00:00:00
abstract::Arterial bleeding during transsphenoidal surgery for pituitary adenoma is known complication. This usually happens due to rupture of intracavernous carotid or delayed hemorrhage due to the carotico-cavernous fistula and/or pseudoaneurysm. There is also evidence that cavernous carotid aneurysms may occur with pituitary...
journal_title:Pituitary
pub_type: 杂志文章,评审
doi:10.1007/s11102-009-0198-7
更新日期:2010-06-01 00:00:00
abstract::Pituitary radiotherapy (RT) is an effective second-line treatment for paediatric Cushing's disease (CD). We report long-term efficacy and anterior pituitary function in a cohort of paediatric CD patients treated with RT. Between 1988 and 2008, from our cohort of 48 paediatric CD patients, eight paediatric CD patients ...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-010-0231-x
更新日期:2010-12-01 00:00:00
abstract::Glucocorticoids are important immunosuppressive hormones; these steroids also inhibit somatic growth by decreased growth hormone (GH) secretion and induced protein catabolism. The ability of ghrelin, the endogenous ligand for the GHS-1a receptor, to increase body weight is attributed to a combination of enhanced food ...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-007-0054-6
更新日期:2007-01-01 00:00:00
abstract::Growth hormone excess has been associated with hypercalciuria and nephrolithiasis. Hypercalcemia in acromegaly is rare and usually due to coexistent primary hyperparathyroidism. To report two cases of 1,25-dihydroxyvitamin D (1,25 (OH)(2) D)-dependent hypercalcemia in cromegaly. A 50 year-old female with 2 years histo...
journal_title:Pituitary
pub_type: 杂志文章,评审
doi:10.1007/s11102-010-0286-8
更新日期:2012-12-01 00:00:00
abstract::Most patients with acromegaly have some degree of insulin resistance. The principal mediator of insulin resistance in acromegaly is hypersecretion of growth hormone. Growth hormone acts at several levels to block insulin actions including inhibiting phosphorylation of the insulin receptor and one of its principal sign...
journal_title:Pituitary
pub_type: 杂志文章,评审
doi:10.1023/a:1023321421760
更新日期:2002-01-01 00:00:00
abstract::The pituitary is the master endocrine gland of the body. It undergoes many changes after birth, and these changes may be mediated by the differentiation of pituitary stem cells. Stem cells in any tissue source must display (1) pluripotent capacity, (2) capacity for indefinite self-renewal, and (3) a lack of specializa...
journal_title:Pituitary
pub_type: 杂志文章,评审
doi:10.1007/s11102-013-0470-8
更新日期:2013-09-01 00:00:00
abstract::Ideal surgical treatment of craniopharyngiomas remains a major challenge for neurosurgeons. Craniopharyngiomas grow in the deep-seated hypothalamic area that is paramount for vegetative, emotional and endocrine function, and for maintaining worthwhile life. The benign histological nature of craniopharyngiomas belies t...
journal_title:Pituitary
pub_type: 杂志文章,评审
doi:10.1007/s11102-008-0137-z
更新日期:2008-01-01 00:00:00
abstract::Resistance to dopamine agonists can be defined with respect to failure to normalize PRL levels and failure to decrease tumor size by > or = 50%. Using these definitions, failure to normalize PRL levels is seen in 24% of those treated with bromocriptine, 13% of those treated with pergolide and 11% of those treated with...
journal_title:Pituitary
pub_type: 杂志文章,评审
doi:10.1023/a:1026225625897
更新日期:2003-01-01 00:00:00
abstract::Clinically inapparent adrenal masses, or adrenal incidentalomas, are discovered inadvertently in the course of workup or treatment of unrelated disorders. Cortical adenoma is the most frequent type of adrenal incidentaloma accounting for approximately 50% of cases in surgical series and even greater shares in medical ...
journal_title:Pituitary
pub_type: 杂志文章,评审
doi:10.1007/s11102-005-4024-6
更新日期:2004-01-01 00:00:00
abstract::We report the case of a B-cell type pituitary lymphoma in a 65 year-old male immunocompetent patient who presented with hypogonadotropic hypogonadism and central hypothyroidism and subsequently developed pulmonary lymphoma. Only three cases of pituitary lymphoma have been previously reported, one in a patient with acq...
journal_title:Pituitary
pub_type: 杂志文章,评审
doi:10.1023/a:1009969417380
更新日期:2000-05-01 00:00:00
abstract::Cushing's Syndrome (CS) is associated with an increased mortality, where hypercoagulability seems to have a crucial role in both arterial and venous thrombosis. Parameters of in vitro thrombin generation (TG) such as lag time, peak thrombin and endogenous thrombin potential (ETP), that describe the time until thrombin...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-013-0467-3
更新日期:2014-02-01 00:00:00
abstract:PURPOSE:Nelson's syndrome is a challenging condition that can develop following bilateral adrenalectomy for Cushing's disease, with high circulating ACTH levels, pigmentation and an invasive pituitary tumor. There is no established medical therapy. The aim of the study was to assess the effects of pasireotide on plasma...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-017-0853-3
更新日期:2018-06-01 00:00:00
abstract::Anemia and other hematological abnormalities are common in patients with Sheehan's syndrome. The response of these abnormalities to replacement of thyroxine and glucocorticoids is not clear. The aim of the present study was to document the profile of hematological abnormalities and response to treatment in patients wi...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-010-0255-2
更新日期:2011-03-01 00:00:00
abstract::We report on a 74-year-old male patient who presented with progressive neuroophthalmologic symptoms soon after the administration of a long-acting gonadotropin-releasing hormone agonist for treatment of a prostate cancer. Imaging revealed a destructively growing and extensively calcified sellar mass inconsistent with ...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-009-0199-6
更新日期:2011-12-01 00:00:00
abstract::Adequate ADH secretion, adrenal and thyroid functions are vital during the acute and post-acute phases of TBI. Deficiencies of these functions as a result of TBI are increasingly recognized. During the acute phase of TBI the incidence of severe DI is 2.9%; the incidence of less severe forms of DI is 21.6-26%. The deve...
journal_title:Pituitary
pub_type: 杂志文章,评审
doi:10.1007/s11102-006-6049-x
更新日期:2005-01-01 00:00:00
abstract:PURPOSE:Long-acting somatostatin analogs are one of the main classes of medical therapy used for acromegaly and most patients require ongoing treatment. Few studies have evaluated the long-term efficacy and safety of lanreotide depot beyond 2 years. The goal of this study was to provide a long-term longitudinal assessm...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-016-0724-3
更新日期:2016-08-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to define safety and efficacy of medical therapy in the treatment of nonfunctioning pituitary tumours. DESIGN:We studied thirteen patients with a clinically nonfunctioning pituitary macroadenoma for response to cabergoline treatment for 1 year. Twelve/13 patients were already op...
journal_title:Pituitary
pub_type: 临床试验,杂志文章
doi:10.1023/a:1015366923810
更新日期:2001-08-01 00:00:00
abstract::The metabolic consequences of thyroxine replacement in patients with central hypothyroidism (CH) need to be evaluated. The aim was to examine the outcome of thyroxine replacement in CH. Adult hypopituitary patients (n = 1595) with and without CH from KIMS (Pfizer International Metabolic Database) were studied before a...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-011-0356-6
更新日期:2012-12-01 00:00:00
abstract::In this report, an extremely rare case of pediatric thyrotropin-secreting pituitary macroadenoma (TSHoma) is described. An 8-year-old boy, complaining of unsteady gait, was suspected of endocrinopathy because of emaciation and muscle weakness of the legs. Endocrinological work-up established a diagnosis of hyperthyroi...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-010-0275-y
更新日期:2012-03-01 00:00:00
abstract::Lanreotide depot (LD; commercial name Somatuline(®) Depot) is an injectable, extended-release formulation of the synthetic somatostatin analog (SSA) lanreotide. In recent clinical trials, LD was found to be suitable for self or partner administration, avoiding the need to travel to a medical facility. The Somatuline(®...
journal_title:Pituitary
pub_type: 杂志文章,多中心研究
doi:10.1007/s11102-012-0460-2
更新日期:2014-02-01 00:00:00
abstract:PURPOSE:Approximately 25 % of cases of clinically active acromegaly cases treated in our academic center between 1996 and 2000, were diagnosed in patients who had elevated plasma IGF-1 levels, but apparently "normal" 24-h mean plasma GH levels. The current study served to update the data for patients with acromegaly re...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-016-0735-0
更新日期:2016-12-01 00:00:00
abstract::Meningiomas account for about 1% of sellar masses. Although they can mimic pituitary adenomas, they are more vascularized and invasive. To gain insights that would enhance our ability to establish a pre-surgical diagnosis of meningioma, we performed a retrospective study of these tumors. Query of the surgical patholog...
journal_title:Pituitary
pub_type: 杂志文章
doi:10.1007/s11102-013-0507-z
更新日期:2014-08-01 00:00:00