Abstract:
:Ovarian 20alpha-hydroxysteroid dehydrogenase (20alpha-HSD), which converts progesterone to a derivative devoid of biological activity, plays a crucial role in achieving the short estrous cycle in rats. Although 20alpha-HSD activity has also been demonstrated in the thymus, its molecular nature, function, and regulation of expression have yet to be determined. In the present study we investigated if 20alpha-HSD activity in the thymus originates in a transcript identical to that expressed in the ovary. RT-PCR analysis indicated the expression of 20alpha-HSD mRNA in rat thymus, and sequencing of the PCR product showed 100% identity to ovarian 20alpha-HSD cDNA. Immunohistochemical study using anti-rat ovarian 20alpha-HSD antibody demonstrated the expression of 20alpha-HSD protein in the thymus. The 20alpha-HSD-expressing cells in the thymus seemed to be some type of lymphocyte by their morphology. These results suggest that the same molecular species as ovarian 20a-HSD is expressed in thymic lymphocytes. Therefore, 20alpha-HSD may play a role in T-lymphocyte proliferation and differentiation processes.
journal_name
Endocr Jjournal_title
Endocrine journalauthors
Hirabayashi K,Suzuki M,Takahashi M,Nishihara Mdoi
10.1507/endocrj.48.557subject
Has Abstractpub_date
2001-10-01 00:00:00pages
557-63issue
5eissn
0918-8959issn
1348-4540journal_volume
48pub_type
杂志文章abstract::Conophylline and betacellulin-delta4 reproduce differentiation-inducing activity of activin A and betacellulin, respectively. We examined the effect of conophylline and betacellulin-delta4 on beta cell differentiation. In AR42J cells, conophylline and betacellulin-delta4 converted them into insulin-producing cells. Ce...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.k06-199
更新日期:2007-04-01 00:00:00
abstract::To examine the specific changes in gene expression in thyroid carcinomas, we performed sequence specific-differential display (SS-DD) analysis by using a specific degenerate primer for the superfamily of the small G protein. After subcloning and sequencing analysis, one of the genes that showed decreased expression in...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.46.459
更新日期:1999-06-01 00:00:00
abstract::Thyrotoxic periodic paralysis (TPP) is mainly associated with Graves' disease but rarely with autonomously functioning thyroid nodule (AFTN). We herein report a case of AFTN associated with TPP in which the latter resolved after (131) I therapy for the former. We analyzed the genes encoding thyrotropin receptor (TSHR)...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.k07e-017
更新日期:2008-03-01 00:00:00
abstract::Exercise is a fundamental component of diabetes management. However, choosing inappropriate type or timing of exercise is associated with mild or severe hypoglycemia either during exercise or several hours after exercise. Several studies have shown that impaired counterregulatory responses triggers hypoglycemia. There...
journal_title:Endocrine journal
pub_type: 杂志文章,评审
doi:10.1507/endocrj.EJ19-0153
更新日期:2019-09-28 00:00:00
abstract::Ectopic ACTH syndrome (EAS) is a potentially fatal endocrine disease that results from a variety of neuroendocrine tumors (NETs), such as small cell lung cancer (SCLC) and bronchial typical carcinoid. Typical carcinoid is usually slow growing, not associated with plasma progastrin releasing peptide (ProGRP) elevation....
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.EJ18-0052
更新日期:2018-12-28 00:00:00
abstract::The gene responsible for multiple endocrine neoplasia type 1 (MEN1) has recently been cloned, and its germline mutations were identified in patients with this syndrome. The majority of the mutations, frameshift or nonsense mutations, are expected to result in a loss of function of the gene product menin. Since the con...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.45.753
更新日期:1998-12-01 00:00:00
abstract::This study investigates whether urinary levels of pentosidine, pyrraline and acrolein adduct are increased in type 2 diabetes (DM), and whether these levels are correlated with glycemic control and clinical traits. Urinary levels of pentosidine, pyrraline and acrolein adduct in DM patients (n = 100) recruited from the...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.50.61
更新日期:2003-02-01 00:00:00
abstract::The present study was aimed to examine the possible functional relationship between melatonin and hypothalamic transmitters, endogenous opioids and excitatory amino acids in controlling gonadotropin secretion in ovariectomized estrogen-primed rats. An intravenous injection of naloxone (mu opioid receptor antagonist), ...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.46.831
更新日期:1999-12-01 00:00:00
abstract::Guanylin (Gn), a bioactive peptide, and its receptor, guanylyl cyclase-C (GC-C), are primarily present in the intestine and maintain homeostasis in body fluids. Recently, rats whose macrophages overexpress Gn and GC-C were found to be resistant to diet-induced obesity. Considering that obesity is strongly related to a...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.EJ15-0193
更新日期:2015-01-01 00:00:00
abstract::The mechanisms of paradoxical TRH response in human somatotroph adenoma cells were investigated using intracellular calcium measurement and static incubation assay. Intracellular calcium measurement revealed that TRH induces a biphasic response: a transient increase followed by a sustained plateau. The transient phase...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.52.763
更新日期:2005-12-01 00:00:00
abstract::As a rare condition characterized by inflammation of the pituitary gland, hypophysitis usually results in hypopituitarism and pituitary enlargement. The most critical outcome of hypopituitarism is caused by secondary adrenal insufficiency. Glucocorticoid deficiency is a life-threatening condition, and patients who dev...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.EJ20-0213
更新日期:2020-11-28 00:00:00
abstract::Transsphenoidal adenomectomy is currently the first choice for treatment of patients with pituitary ACTH-dependent Cushing's syndrome. However, pharmacotherapy is prescribed for some patients, e.g., unsuccessful surgery. We treated a woman in whom pituitary Cushing's syndrome was improved while she was on antimuscarin...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.48.303
更新日期:2001-06-01 00:00:00
abstract::In vitro studies in isolated pancreas and islets have shown that glucagon-like peptide-1 (GLP-1) promotes insulin release in a typical concentration-dependent manner. In contrast, the relationship between plasma GLP-1 and insulin concentrations in vivo is complicated, because GLP-1-promoted insulin release lowers bloo...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.k11e-096
更新日期:2011-01-01 00:00:00
abstract:PURPOSE:Surgical removal of growth hormone-producing pituitary adenomas (GHomas) becomes difficult when they invade the cavernous sinus (CS). We investigated the relation among tumor proliferative potential, tumor volume and invasion of GHomas to CS. MATERIALS & METHODS:15 patients with GHoma aged 20-59 years were enr...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.47.supplmarch_s77
更新日期:2000-03-01 00:00:00
abstract::Carcinoma showing thymic-like differentiation (CASTLE) is a rare tumour of the thyroid, which arises from ectopic thymic tissue or remnants of branchial pouches. A systematic review of English literature evidences less than thirty cases; from them, it clearly appears that CASTLE is considered an indolent slow-growing ...
journal_title:Endocrine journal
pub_type: 杂志文章,评审
doi:10.1507/endocrj.k07e-147
更新日期:2008-08-01 00:00:00
abstract::We examined 13 patients with euthyroid Graves' disease suspected ophthalmologically, by comparing them with 20 patients with untreated Graves' disease and by following them up for 5 to 10 years. They had Graves' ophthalmopathy (NOSPECS class II-IV) without other ocular diseases, normal levels of serum thyroid hormones...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.42.405
更新日期:1995-06-01 00:00:00
abstract::Estrogen plays pivotal roles in body weight regulation through its effects on central estrogen receptor-α (ERα) expression. ERα is found on neurons that express the hypothalamic anorexigenic factors steroidogenic factor-1 (SF-1) and pro-opiomelanocortin (POMC) mediate these effects of estrogen. As the gonadal hormonal...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.EJ17-0140
更新日期:2017-12-28 00:00:00
abstract::In contrast to minimally invasive follicular thyroid carcinoma (FTC), widely invasive FTC is aggressive and is associated with a dire prognosis. However, prognostic factors of widely invasive FTC have not been intensively investigated. In this study, we investigated this issue in a series of 79 widely invasive FTC pat...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.ej12-0454
更新日期:2013-01-01 00:00:00
abstract::We demonstrated severe hyponatremia in a 68 year-old man who had pituitary tumor. He had poor appetite and was disoriented. Tests revealed hyponatremia of 110 mmol/l, and he was admitted to Jichi Medical School Omiya Medical Center to undergo further tests. Physical findings revealed disturbance of consciousness with ...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.51.435
更新日期:2004-08-01 00:00:00
abstract::Steroidogenic factor-1 [(SF-1/Ad4BP) (MIM184757)] is a nuclear receptor that regulates multiple genes involved in adrenal and gonadal development, steroidogenesis, reproduction, and other metabolic functions. Initially, mutations of SF-1/Ad4BP gene (NR5A1) in humans were identified in two 46, XY female patients with a...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.k08e-380
更新日期:2009-01-01 00:00:00
abstract::The effect of luteinizing hormone releasing hormone (LHRH) on the neuronal activity of CA1 and CA3 regions of the hippocampus was studied by means of extracellular recordings in the castrated male, intact male, castrated female, and castrated female injected s.c. with 20 micrograms estradiol benzoate (EB) for 3 days. ...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.42.251
更新日期:1995-04-01 00:00:00
abstract::von Hippel-Lindau (VHL) disease (VHLD) is a hereditary autosomal dominant syndrome that causes various benign and malignant tumors. VHLD is caused by mutations in the VHL tumor suppressor gene. Here, we report a mutation in the VHL gene in a Japanese family with VHLD type 2A, characterized by pheochromocytoma (PHE), a...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.k06-046
更新日期:2006-12-01 00:00:00
abstract::The aim of this study was to assess the effect of the long-term different diabetic therapies on the plasma leptin level in type 2 diabetic subjects. We measured plasma leptin, body fat and fasting plasma insulin in 96 type 2 diabetic male subjects. They had received the same treatment regimen for more than one year (3...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.48.377
更新日期:2001-06-01 00:00:00
abstract::Methylenetetrahydrofolate reductase plays an important role in folate metabolism. Individuals who are type 2 diabetes mellitus have greatest risk for the development of vascular complications. The results of studies which assessed the association between MTHFR C677T polymorphism and T2DM with vascular complications we...
journal_title:Endocrine journal
pub_type: 杂志文章,meta分析
doi:10.1507/endocrj.ej14-0071
更新日期:2014-01-01 00:00:00
abstract::Breast cancer in young women younger than 35 years old is rare, aggressive and associated with a poor prognosis. Endocrine therapy is a preferred treatment modality in hormone receptor-positive early stage and advanced breast cancer, combined therapy of goserelin and letrozole presents an option for premenopausal wome...
journal_title:Endocrine journal
pub_type: 临床试验,杂志文章
doi:10.1507/endocrj.ej12-0434
更新日期:2013-01-01 00:00:00
abstract::Aerobic (sub lactate threshold; sub-LT) exercise training facilitates oxidative phosphorylation and glycolysis of skeletal muscle. Thyroid hormone (TH) also facilitates such metabolic events. Thus, we studied whether TH signaling pathway is activated by treadmill training. Male adult rats received 30 min/day treadmill...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.EJ16-0126
更新日期:2016-08-31 00:00:00
abstract::Pregnancy in acromegalic patients is a rare event, but is usually uneventful, with stable GH and IGF-I levels and no tumor enlargement. Medical treatment can usually be withdrawn without problems and although no major adverse event has been reported, the suspension of drug treatments is generally recommended. No cas...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.ej11-0306
更新日期:2012-01-01 00:00:00
abstract::Sera from 30 Japanese insulin-dependent diabetes mellitus (IDDM) patients of short duration were examined to determine whether they had antibodies to proteolytic fragments of islet antigen, the molecular weights of which were 37,000 and/or 40,000 Mr (37KAb). The median age and disease duration of the patients were 13 ...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.43.615
更新日期:1996-12-01 00:00:00
abstract::Treatment plan for neonates with borderline hypothyroidism (persistent hyperthyrotropinemia with normothyroxinemia) has not been established. In this study, changes in thyroid function after discontinuation of low-dose L-thyroxine (L-T4) supplement in infants with the condition were evaluated. Fourteen infants with hy...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.50.379
更新日期:2003-08-01 00:00:00
abstract::Clinical studies have shown that hyperhomocysteinemia is associated with bone fragility. Homocysteine (Hcy) induces apoptosis of osteoblastic cell lineage by increasing oxidative stress, which may contribute to Hcy-induced bone fragility. Statins, 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors, ameliorate ...
journal_title:Endocrine journal
pub_type: 杂志文章
doi:10.1507/endocrj.EJ15-0480
更新日期:2016-04-25 00:00:00