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Endocrine Journal

Shizuka Kaneko, Tomonori Oura, Akiko Matsui, Tomotaka Shingaki, Masakazu Takeuchi
The efficacy and safety of once-weekly dulaglutide 0.75 mg (dulaglutide) compared with once-daily insulin glargine (glargine) in Japanese patients with type 2 diabetes were evaluated according to subgroups stratified by baseline glycated hemoglobin (HbA1c) (≤8.5% or >8.5%). This exploratory analysis of a randomized, open-label, phase 3 study included 361 patients. In both HbA1c subgroups (patients with baseline HbA1c ≤8.5% or >8.5%), a statistically significantly greater reduction in HbA1c was observed in dulaglutide-treated patients compared with glargine-treated patients after 26 weeks of treatment (HbA1c ≤8...
September 14, 2017: Endocrine Journal
Qi Fu, Min Sun, Zhixiao Wang, Wei He, Yu Duan, Tao Yang
The pathophysiology is distinct in various state of glucose metabolism abnormalities. As the defect of individuals with normal oral glucose tolerance (NGT) but isolated high glycosylated hemoglobin (HbA1c), i.e. iHH, was ambiguous, we aimed to investigate the insulin sensitivity and β-cell function of iHH. According to the ADA criteria of HbA1c cut-off point (5.7%), 3,517 subjects with NGT screened from a total of 7,855 middle-aged and elderly Chinese without known diabetes were divided into two groups, 1,877 subjects with HbA1c < 5...
September 13, 2017: Endocrine Journal
Young Suk Shim, Min Jae Kang, Seung Yang, Il Tae Hwang
The aim of the present study was to evaluate the association of irisin with obesity and metabolic syndrome (MetS) in Korean prepubertal children. A total of 96 children and adolescents aged 6 to 10 years (56 males) were included in this study. Subjects were divided into 3 groups: normal weight (n = 54), overweight (n = 16), and obese (n = 26). In the subgroup analyses, overweight/obese children were further divided based on their MetS status (with MetS vs. without MetS). Children with obesity tended to exhibit a lower mean irisin concentration compared to those with normal weight (p = 0...
September 12, 2017: Endocrine Journal
Mitsuyoshi Hirokawa, Miyoko Higuchi, Ayana Suzuki, Toshitetsu Hayashi, Seiji Kuma, Akira Miyauchi
Noninvasive encapsulated follicular variant of papillary thyroid carcinoma (PTC) was reclassified as noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP). To date, no studies on NIFTP have been reported in Japan. This study aimed to evaluate the clinical, cytological, and pathological findings of 54 cases of NIFTP from a single center in Japan, and compare them with those in the western countries. There were no significant differences in age, sex, or tumor size between patients with NIFTP and those with invasive encapsulated follicular variant -PTC...
September 12, 2017: Endocrine Journal
Gwang Seok Kim, Sung Gil Kim, Han Soo Kim, Eun Young Hwang, Jun Ho Lee, Hyun Yoon
The present study was conducted to assess the relationship between chronic kidney disease (CKD) and the homeostasis model assessment of insulin resistance (HOMA-IR) and beta cell function (HOMA-B) in Korean adults with or without type 2 diabetes mellitus (T2DM). This study included 5,188 adults aged 20 or older using the 2015 Korea National Health and Nutrition Examination Survey (KNHANES) data, which represents national data in Korea. A covariance test adjusted for covariates was performed for HOMA-IR and HOMA-B in relation to CKD...
September 9, 2017: Endocrine Journal
Shozo Miyauchi, Teruki Miyake, Masumi Miyazaki, Toru Eguchi, Tetsuji Niiya, Shin Yamamoto, Hidenori Senba, Shinya Furukawa, Bunzo Matsuura, Yoichi Hiasa
The association between serum testosterone level and liver fibrosis in patients with non-alcoholic fatty liver disease is unclear. To clarify this association, we investigated the relationship between serum free testosterone concentration and markers of liver fibrosis in men with type 2 diabetes mellitus but no obvious features of alcohol consumption. This retrospective observational cross-sectional study enrolled 248 men with type 2 diabetes mellitus. The FIB-4 index was measured as a marker of liver fibrosis, and multiple linear regression analysis was performed to examine its association with serum free testosterone concentration...
September 9, 2017: Endocrine Journal
Mari Satoh, Keiko Aso, Tomotaka Nakayama, Tsutomu Saji
Thyroid disease is known to be associated with pulmonary arterial hypertension (PAH). We investigated the prevalence of thyroid disease in patients with idiopathic PAH (IPAH) or heritable PAH (HPAH), and the factors affecting the pathogenesis of thyroid disease. We retrospectively evaluated 59 patients with IPAH or HPAH who had been diagnosed with PAH before the age of 20 years. Thyrotoxicosis was detected in 12 of the 59 patients (6 patients with Graves' disease, 3 with hashitoxicosis, and 3 with silent thyroiditis) after the start of PAH treatment...
September 9, 2017: Endocrine Journal
Takeshi Iwasa, Toshiya Matsuzaki, Yiliyasi Mayila, Kiyohito Yano, Minoru Irahara
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 milieu is drastically altered during the developmental period, the expression levels of SF-1 and POMC might also change during this period. In this study, we showed that hypothalamic SF-1 and ERα mRNA expression did not change during the neonatal to pre-pubertal period (from postnatal day 10 to 30), and there were no significant differences in the hypothalamic mRNA expression levels of these molecules between males and females at any examined age...
September 6, 2017: Endocrine Journal
Ayana Suzuki, Mitsuyoshi Hirokawa, Nami Takada, Miyoko Higuchi, Aki Ito, Naoki Yamao, Toshitetsu Hayashi, Seiji Kuma, Akira Miyauchi
Many cytological studies on medullary thyroid carcinoma (MTC) have been reported; however, such studies in large series of patients with MTC have not been performed. We investigated MTC at a single institution in Japan using fine-needle aspiration cytology (FNAC), and aimed to establish a preoperative diagnostic algorithm for MTC. FNAC was performed in 119 of 149 patients with nodules (79.9%) who ultimately underwent surgical resection. Moreover, hereditary MTC was diagnosed preoperatively in 22 nodules that did not undergo FNAC (39...
September 5, 2017: Endocrine Journal
Mariko Aoyama, Hiromitsu Takizawa, Mitsuhiro Tsuboi, Yasushi Nakagawa, Akira Tangoku
Thyroid cancer and Graves' disease may present simultaneously in one patient. The incidence of the development of hyperthyroidism from metastatic differentiated thyroid carcinoma is rare. We herein report a case of metastatic follicular carcinoma complicated with Graves' disease after total thyroidectomy. A 57-year-old woman underwent right hemithyroidectomy for follicular carcinoma. Metastatic lesions appeared in the lungs and skull two years after the first surgery, and remnant thyroidectomy was performed for radioactive iodine-131 (RAI) therapy, during which the TSH receptor antibody (TRAb) was found to be negative...
September 5, 2017: Endocrine Journal
Kazuteru Mitsuhashi, Yoshitaka Hashimoto, Masahide Hamaguchi, Akihiro Obora, Takao Kojima, Takuya Fukuda, Michiaki Fukui
Fatty liver disease and metabolic syndrome (MetS) are both shown to increase the risk of type 2 diabetes. The aim of this study was to investigate the combined effect of fatty liver and MetS on incident diabetes. In this cohort study of 17,810 participants, fatty liver was diagnosed by abdominal ultrasonography and MetS was defined by a joint interim statement. We divided the participants into four groups according to the presence of fatty liver and/or MetS. Type 2 diabetes was defined as HbA1c ≥6.5%, fasting plasma glucose ≥7...
September 2, 2017: Endocrine Journal
Satoshi Narumi, Larry A Fox, Keisuke Fukudome, Zenichi Sakaguchi, Chiho Sugisawa, Kiyomi Abe, Kaori Kameyama, Tomonobu Hasegawa
Thyroid peroxidase (TPO) deficiency, caused by biallelic TPO mutations, is a well-established genetic form of congenital hypothyroidism (CH). More than 100 patients have been published, and the patients have been diagnosed mostly in the frame of newborn screening (NBS) programs. Correlation between clinical phenotypes and TPO activity remains unclear. Here, we report clinical and molecular findings of two unrelated TPO mutation-carrying mildly hypothyroid patients. The two patients were born at term after an uneventful pregnancy and delivery, and were NBS negative...
September 1, 2017: Endocrine Journal
Shinya Furukawa, Takenori Sakai, Tetsuji Niiya, Hiroaki Miyaoka, Teruki Miyake, Shin Yamamoto, Keiko Tanaka, Teruhisa Ueda, Hidenori Senba, Masamoto Torisu, Hisaka Minami, Bunzo Matsuura, Yoichi Hiasa, Yoshihiro Miyake
Among patients with type 2 diabetes mellitus, the association between B-type natriuretic peptide (BNP) and renal function remains controversial. We therefore investigated this issue among Japanese patients with type 2 diabetes mellitus. This study included 671 Japanese patients with type 2 diabetes mellitus. BNP levels were divided at quartile points on the basis of the distribution. We used four outcomes regarding the renal function: 1) chronic kidney disease (CKD): estimated glomerular filtration rate (eGFR) < 60ml/min/1...
August 31, 2017: Endocrine Journal
Aya Sawa, Tomohiro Chiba, Jun Ishii, Hiroyuki Yamamoto, Hisato Hara, Hiroshi Kamma
Well-differentiated thyroid carcinomas have driver mutations involving growth factor receptor-tyrosine kinases (RTKs) or their intracellular signaling pathway, that is, the mitogen-activated protein kinase (MAPK) pathway. Sorafenib is a multikinase inhibitor of RTKs and the MAPK pathway and has recently been used for the treatment of unresectable well-differentiated thyroid carcinoma. In normal thyroid follicular cells, stimulation of the thyroid-stimulating hormone (TSH) receptor activates the cyclic adenosine monophosphate (cAMP) pathway and promotes cell growth as well as hormonal secretion...
August 31, 2017: Endocrine Journal
Wenjun Wu, Xiaohua Gong, Qi Zhou, Xiong Chen, Xiaojun Chen, Bimin Shi
The aim of this study was to define the effectiveness and safety of ultrasound(US)-guided percutaneous microwave ablation(MWA) for benign thyroid nodules with one session treatment. A total 121 benign thyroid nodules in 100 euthyroid patients underwent MWA in one medical center between August 2014 and December 2015. MWA was performed with an internally cooled antenna under local anesthesia. The volume of the nodule, cosmetic score and symptom score were compared before and after the procedure. The volume reduction rate(VRR) was also evaluated...
August 29, 2017: Endocrine Journal
Mitsuyoshi Takahara, Toshihiko Shiraiwa, Naoto Katakami, Taka-Aki Matsuoka, Iichiro Shimomura
We investigated whether glucotoxicity of β-cell function could be eliminated after medical nutrition therapy (MNT) without forced correction of hyperglycemia by anti-diabetic medications including exogenous insulin administration. We analyzed newly diagnosed type 2 diabetic outpatients with hemoglobin A1c (HbA1c) of 10.1 ± 1.5%, who were treated by MNT at least for three months, without any aid of anti-diabetic medications. The β-cell function was calculated as the product of the ΔIns0-120/ΔGlu0-120 and the Matsuda index, where ΔIns0-120/ΔGlu0-120 represents the ratio of the incremental concentrations of insulin to those of glucose during the 0- to 120-min time periods under a 75-g oral glucose tolerance test...
August 25, 2017: Endocrine Journal
Saki Tomari, Mikio Watanabe, Naoya Inoue, Tomoyo Mizuma, Chika Yamanaka, Yoh Hidaka, Yoshinori Iwatani
Graves' disease (GD) and Hashimoto's disease (HD) are well known autoimmune thyroid diseases (AITDs), and the severity and intractability of AITDs varies among patients. Thyroid peroxidase (TPO) is a thyroid-specific antigen. The levels of TPOAb were higher in patients with HD and may be associated with thyroid destruction. In this study, we genotyped eight single nucleotide polymorphisms (SNPs) in the TPO gene to clarify the association of TPO gene polymorphisms with the development, severity and intractability of AITD...
August 25, 2017: Endocrine Journal
Hiroshi Nishioka, Noriaki Fukuhara, Mitsuo Yamaguchi-Okada, Akira Takeshita, Yasuhiro Takeuchi, Shozo Yamada
Although the current remission criteria for acromegaly are clear and concise, some pitfalls have been reported in early endocrinological evaluation after surgery. To evaluate the long-term (>4 year) outcome and to detect the pitfalls in early evaluation, we retrospectively reviewed 128 patients with acromegaly who underwent primary transsphenoidal surgery during 2011 and 2012. These included 66 men and 62 women, aged from 7 to 76 (mean 46) years old. 49 patients (38.3%) were preoperatively treated with somatostatin analog (SSA)...
August 23, 2017: Endocrine Journal
Min Sun, Juan Long, Yuxin Yi, Wei Xia
Insulin-like growth factor-binding protein (IGFBP)-5 is a secreted protein that binds to IGFs and modulates IGF actions, as well as regulates cell proliferation, migration, and apoptosis independent of IGF. Proper cellular localization is critical for the effective function of most signaling molecules. In previous studies, we have shown that the nuclear IGFBP-5 comes from ER-cytosol retro-translocation. In this study, we further investigated the pathway mediating IGFBP-5 nuclear import after it retro-translocation...
August 23, 2017: Endocrine Journal
Linghong Wang, Tetsuo Mitsui, Maho Ishida, Michi Izawa, Jun Arita
Dexamethasone-induced Ras-related protein 1 (Rasd1) is a member of the Ras superfamily of monomeric G proteins that have a regulatory function in signal transduction. Here we investigated the role of Rasd1 in regulating estrogen-induced gene expression in primary cultures of rat anterior pituitary cells. Rasd1 mRNA expression in anterior pituitary cells decreased after treatment with forskolin or serum and increased after treatment with 17β-estradiol (E2). Increases in Rasd1 mRNA expression occurred as early as 0...
August 23, 2017: Endocrine Journal
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