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Endocrine Journal

Tetsurou Satoh, Osamu Isozaki, Atsushi Suzuki, Shu Wakino, Tadao Iburi, Kumiko Tsuboi, Naotetsu Kanamoto, Hajime Otani, Yasushi Furukawa, Satoshi Teramukai, Takashi Akamizu
Thyroid storm is an endocrine emergency which is characterized by multiple organ failure due to severe thyrotoxicosis, often associated with triggering illnesses. Early suspicion, prompt diagnosis and intensive treatment will improve survival in thyroid storm patients. Because of its rarity and high mortality, prospective intervention studies for the treatment of thyroid storm are difficult to carry out. We, the Japan Thyroid Association and Japan Endocrine Society taskforce committee, previously developed new diagnostic criteria and conducted nationwide surveys for thyroid storm in Japan...
October 15, 2016: Endocrine Journal
Tatsuhiko Urakami, Yusuke Mine, Masako Aoki, Misako Okuno, Junichi Suzuki
This study implemented a randomized crossover design to evaluate the efficacy and safety of switching from insulin glargine (IGlar) to insulin degludec (IDeg) in 18 children (11 males, 7 females; age 11.0 ± 0.5 years) with type 1 diabetes. All subjects had previously used IGlar once daily at bedtime. We compared fasting plasma glucose (FPG) and HbA1c levels, frequencies of overall and nocturnal (2200 h - 0659 h) hypoglycemia, and basal insulin dose at the baseline with those measured during a 24-week period during which IGlar or IDeg was administered in combination with pre-meal rapid acting insulin analogues...
October 14, 2016: Endocrine Journal
Min Jae Kang, Jeong Seon Lee, Hwa Young Kim, Hae Woon Jung, Young Ah Lee, Sun Hee Lee, Ji-Young Seo, Jae Hyun Kim, Hye Rim Chung, Se Young Kim, Choong Ho Shin, Sei Won Yang
The CAG repeat length of the androgen receptor (AR) gene, which exhibits an inverse relationship to AR sensitivity, might influence the development of the pubarche along with hyperandrogenemia. There are ethnic differences in the AR CAG repeat length, however, no Asian studies on premature pubarche (PP) have been reported, including Korea. Our objectives were to examine the hormone levels and AR CAG repeat length, and to assess their contributions to PP in Korean girls. Subjects with PP (n=16) and normal pubarche (NP, n=16), and normal controls (NC, n=16) were enrolled...
October 6, 2016: Endocrine Journal
Yuki Kawashima Sonoyama, Toshihiro Tajima, Masanobu Fujimoto, Akiko Hasegawa, Naoki Miyahara, Rei Nishimura, Yuichiro Hashida, Atsushi Hayashi, Keiichi Hanaki, Susumu Kanzaki
Pseudohypoaldosteronism type 1 (PHA1) is a rare genetic disease characterized by resistance to aldosterone, and the renal form of PHA1 is associated with heterozygous inactivating mutations in NR3C2, which encodes mineralocorticoid receptor (MR). Here we report a case of renal PHA1 due to a novel frameshift mutation in NR3C2. A 10-day-old Japanese male infant, born at 39 weeks gestation (birth weight, 2,946 g), was admitted to our hospital because of lethargy and vomiting, with a 6.7% weight loss since birth...
October 5, 2016: Endocrine Journal
Ayako Moriya, Masaaki Yamamoto, Shunsuke Kobayashi, Tomoko Nagamine, Naomi Takeichi-Hattori, Mototsugu Nagao, Taro Harada, Kyoko Tanimura-Inagaki, Shiro Onozawa, Satoru Murata, Hideki Tamura, Izumi Fukuda, Shinichi Oikawa, Hitoshi Sugihara
The diagnostic steps for primary aldosteronism (PA) include case screening tests, confirmatory tests, and localization. The aim of this study was to identify useful confirmatory tests and their cut-off values for differentiating the subtype of primary aldosteronism, especially in unilateral PA, such as aldosterone-producing adenoma, and bilateral PA, such as idiopathic hyperaldosteronism. Seventy-six patients who underwent all four confirmatory tests, the captopril-challenge test (CCT), furosemide upright test (FUT), saline infusion test (SIT), and ACTH stimulation test (AST), and who were confirmed to have an aldosterone excess by adrenal venous sampling (AVS) were recruited...
October 1, 2016: Endocrine Journal
Xu Li, Feng Zhang, Haibing Chen, Haoyong Yu, Jian Zhou, Ming Li, Qing Li, Lianxi Li, Jun Yin, Fang Liu, Yuqian Bao, Junfeng Han, Weiping Jia
The 72-hour fast test is the current standard for the diagnosis of insulinoma. However, to conduct this test patients require hospitalization due to the chance of severe hypoglycemic episodes. Thus, it is costly and stressful for the patient. An out-patient test would serve the patient better and be more economical. Our aim was to evaluate the value of insulin to glucose and C-peptide to glucose ratios during a prolonged 5-hour oral glucose tolerance test (5-hour OGTT) in qualitative diagnosis of insulinoma, and to identify the optimal threshold for clinical screening...
October 1, 2016: Endocrine Journal
Takashi Yazawa, Yoshitaka Imamichi, Kaoru Miyamoto, Md Rafiqul Islam Khan, Junsuke Uwada, Akihiro Umezawa, Takanobu Taniguchi
Steroid hormones are mainly produced in adrenal glands and gonads. Because steroid hormones play vital roles in various physiological processes, replacement of deficient steroid hormones by hormone replacement therapy (HRT) is necessary for patients with adrenal and gonadal failure. In addition to HRT, tissue regeneration using stem cells is predicted to provide novel therapy. Among various stem cell types, mesenchymal stem cells can be differentiated into steroidogenic cells following ectopic expression of nuclear receptor (NR) 5A subfamily proteins, steroidogenic factor-1 (also known as adrenal 4 binding protein) and liver receptor homolog-1, with the aid of cAMP signaling...
September 29, 2016: Endocrine Journal
Shingo Fujio, Hiroshi Arimura, Hirofumi Hirano, Mika Habu, Manoj Bohara, F M Moinuddin, Yasuyuki Kinoshita, Kazunori Arita
Patients with acromegaly have a compromised quality of life (QOL). Modern surgical techniques have improved the surgical cure rate. However, there are no prospective studies reporting postoperative changes in QOL among patients cured solely by surgery. The aim of the present study was to determine the effect of surgery on QOL using the 36-item short form health survey (SF-36) questionnaire. SF-36 scores comprise 3 components: the physical component summary (PCS), the mental component summary (MCS) and role-social component summary (RCS)...
September 29, 2016: Endocrine Journal
Yosuke Ono, Sachiko Ono, Takashi Hinata, Toshimitsu Ito, Hiroko Yasuda, Yuji Tanaka
Sodium-glucose cotransporter 2 inhibitors are commonly used to promote urinary glucose excretion (UGE). However, it remains unclear how UGE reflects glucose metabolism in the natural history of diabetes. Thus, we retrospectively reviewed the prediabetes medical records of 64 patients who had undergone 75-g oral glucose tolerance testing (OGTT) with measurements of UGE at 0 min, 60 min, and 120 min. The mean age and glycated hemoglobin levels were 46 ± 10 years and 5.6 ± 0.3%, respectively. The median UGE (60 min + 120 min) value was 16...
September 28, 2016: Endocrine Journal
Takashi Okamura, Yasuyo Nakajima, Akiko Katano-Toki, Kazuhiko Horiguchi, Shunichi Matsumoto, Satoshi Yoshino, Eijiro Yamada, Takuya Tomaru, Sumiyasu Ishii, Tsugumichi Saito, Atsushi Ozawa, Nobuyuki Shibusawa, Tetsurou Satoh, Shuichi Okada, Rin Nagaoka, Daisuke Takada, Jun Horiguchi, Tetsunari Oyama, Masanobu Yamada
Somatic mutations in KCNJ5 gene have been identified in patients with adrenal aldosterone-producing adenomas (APAs). We previously reported that Japanese patients with APAs had distinct characteristics from patients in Western countries; i.e. they had a high frequency of KCNJ5 mutations and exhibited a frequent association with cortisol co-secretion. Therefore, APAs among Japanese patients may have different features from those in Western countries. We added recent cases, examined 47 cases (43% male) of APAs, including clinicopathological features, KCNJ5 mutations, and the mRNA levels of several steroidogenic enzymes, and compared the results obtained to those reported in other countries...
September 28, 2016: Endocrine Journal
Toshiya Matsuzaki, Altankhuu Tungalagsuvd, Takeshi Iwasa, Munkhsaikhan Munkhzaya, Rie Yanagihara, Takako Tokui, Kiyohito Yano, Yiliyasi Mayila, Takeshi Kato, Akira Kuwahara, Sumika Matsui, Minoru Irahara
Hypersecretion of luteinizing hormone (LH) is a common endocrinological finding of polycystic ovary syndrome (PCOS). This derangement might have a close relationship with hypothalamic kisspeptin expression that is thought to be a key regulator of gonadotropin-releasing hormone (GnRH). We evaluated the relationship between the hypothalamic-pituitary-gonadal axis (HPG axis) and kisspeptin using a rat model of PCOS induced by letrozole. Letrozole pellets (0.4 mg/day) and control pellets were placed subcutaneously onto the backs of 3-week-old female Wistar rats...
September 24, 2016: Endocrine Journal
Hitomi Oda, Akira Miyauchi, Yasuhiro Ito, Hisanori Sasai, Hiroo Masuoka, Tomonori Yabuta, Mitsuhiro Fukushima, Takuya Higashiyama, Minoru Kihara, Kaoru Kobayashi, Akihiro Miya
The incidence of thyroid cancer is increasing rapidly in many countries, resulting in rising societal costs of the care of thyroid cancer. We reported that the active surveillance of low-risk papillary microcarcinoma had less unfavorable events than immediate surgery, while the oncological outcomes of these managements were similarly excellent. Here we calculated the medical costs of these two managements. We created a model of the flow of these managements, based on our previous study. The flow and costs include the step of diagnosis, surgery, prescription of medicine, recurrence, salvage surgery for recurrence, and care for 10 years after the diagnosis...
September 22, 2016: Endocrine Journal
Tan Yang, Hua Liu, Bo Zhao, Zhongyuan Xia, Yemin Zhang, Deling Zhang, Mingxin Li, Yingkang Cao, Zhijiang Zhang, Yongyi Bi, Changhua Wang
As an insulin sensitizer and modulator of inflammatory responses, adiponectin has become a therapeutic target for insulin resistance, diabetes, and diabetes-related complications. Wogonin possesses anti-oxidative, anti-inflammatory, and anti-diabetic abilities. However, its effect on generation and secretion of adiponectin is ill-defined in adipocytes. Here, we demonstrated that wogonin administration augmented intracellular adiponectin levels and attenuated adiponectin release in a dose- and time-dependent manner in mature 3T3-L1 adipocytes, along with a suppression of PKCδ phosphorylation...
September 21, 2016: Endocrine Journal
Akihiro Nishimura, Shuki Usui, Naoki Kumashiro, Hiroshi Uchino, Azusa Yamato, Daijiro Yasuda, Kaoru Nagasawa, Minoru Okubo, Yasumichi Mori, Takahisa Hirose
Although sitagliptin and repaglinide monotherapies improve postprandial hyperglycemia, the long-term effects and safety of their combination has not been examined. In this randomized 24-week trial of Japanese patients with poor control (HbA1c 7.0-8.5%) by sitagliptin, we divided 40 patients randomly into two equal groups of the repaglinide add-on to sitagliptin (ADD-ON, n=20), or sitagliptin switched to repaglinide (SWITCH, n=20). The meal tolerance test was carried out at weeks 0 and 24. The primary outcomes were changes in HbA1c and area under the curves (AUC) of glucose from the baseline to week 24...
September 17, 2016: Endocrine Journal
Andrea Tura, Christian Göbl, Ermanno Moro, Giovanni Pacini
Impaired fasting glucose (IFG) and impaired glucose tolerance (IGT) are well-known conditions of risk for diabetes. Recently, 1h-hyperglycemia (1h-HG), i.e., glycemia > 8.6 mmol/l, has been suggested as further condition of diabetes risk. Moreover, in 2010 the American Diabetes Association included the measurement of glycosylated hemoglobin (HbA1c) among the criteria of diabetes risk (5.7-6.4%). Aim of this study was investigating all these different conditions of diabetes risk, with specific focus on possible insulin sensitivity and beta-cell function changes, when 1h-HG, and further HbA1c-prediabetes, are added to the already deeply studied condition of IFG/IGT...
September 14, 2016: Endocrine Journal
Ji Won Kim, Young Jun Woo, Jin Sook Yoon
The aim of this study is to describe characteristics of Graves' orbitopathy (GO) patients with progressive diplopia and to consider whether modified clinical activity score (CAS) is a useful indicator for prediction of diplopia progression. Medical records and images of GO patients with progressive diplopia were retrospectively reviewed. Clinical parameters (e.g., modified CAS, modified NOSPECS score, exophthalmometry results, score of diplopia, and prevalence of optic neuropathy) were evaluated. Thyroid stimulating hormone receptor autoantibody (TRAb) values were determined...
September 13, 2016: Endocrine Journal
Takuyuki Katabami, Satoshi Ishii, Ryusei Obi, Shiko Asai, Yasushi Tanaka
Unilateral and/or predominant uptake on adrenocortical scintigraphy (ACS) may be related to autonomous cortisol overproduction in patients with subclinical Cushing's syndrome (SCS). However, there is no information regarding whether increased tracer uptake on the tumor side or decreased uptake on the contralateral side on ACS is more greatly associated with inappropriate cortisol production. Therefore, we evaluated the relationship between quantitative (131)I-6β-iodomethyl-norcholesterol ((131)I-NP-59) uptake in both adrenal glands and parameters of autonomic cortisol secretion and attempted to set a cut off for SCS detection...
September 10, 2016: Endocrine Journal
Agnieszka Adamska, Monika Karczewska-Kupczewska, Agnieszka Lebkowska, Robert Milewski, Maria Górska, Elzbieta Otziomek, Agnieszka Nikolajuk, Slawomir Wolczynski, Irina Kowalska
Irisin is an adipokine/myokine which could be connected with insulin sensitivity. Polycystic ovary syndrome (PCOS) is characterized by oligo- or anovulation, polycystic ovary, hyperandrogenism and insulin resistance. The aim of the present study was to determine the relationship between serum irisin concentration and insulin sensitivity (Mffm) as well as the effect of insulin infusion on circulating irisin levels in PCOS women as compared with healthy controls. Seventy seven women were enrolled in the study - 57 with PCOS and 20 healthy controls matched for BMI and age...
September 8, 2016: Endocrine Journal
Ai Yoshihara, Jaeduk Yoshimura Noh, Koji Mukasa, Natsuko Watanabe, Kenji Iwaku, Hidemi Ohye, Miho Suzuki, Masako Matsumoto, Yo Kunii, Nami Suzuki, Kei Endo, Ruriko Suzuki, Naomi Hattori, Kiminori Sugino, Koichi Ito
Overt hyperthyroidism is associated with reduced bone density. The extent of restoration of reduced bone density caused by hyperthyroidism in postmenopausal Graves' disease (GD) patients has not fully been investigated. We examined 85 newly diagnosed postmenopausal GD patients, and we measured their serum thyroid hormone levels as well as their bone turnover marker levels and the bone mineral density (BMD) of their lumbar spine (LS), both femoral necks (FN), and left distal radius (DR). We prospectively observed the patients for changes in BMD and bone turnover marker levels during a 24-month period after euthyroidism had been established by ATD treatment...
September 7, 2016: Endocrine Journal
Tetsuo Nishikawa, Masao Omura, Migagu Kawaguchi, Akiko Takatsu, Fumitoshi Satoh, Sadayoshi Ito, Isao Kurihara, Hiroshi Itoh, Toshihiko Yanase, Hirotaka Shibata, Yutaka Oki, Mitsuhide Naruse, Keiko Sakurai, Hidehiko Sasamoto, Katsuhiko Kuwa
We attempted to study the standardization of aldosterone measurement in blood. The serum certified reference material (serum CRM) was established by spiking healthy human serum with pure aldosterone. ID-LC/MS/MS as a reference measurement procedure was performed by using the serum CRM. LC-MS/MS as a comparison method (CM) was routinely used for clinical samples, and the values with and without calibration by the serum CRM were compared. The serum CRM demonstrated similar reactivity with peripheral blood plasma as clinical samples in routine methods (RM) of RIA, ELISA, and CLEIA...
September 2, 2016: Endocrine Journal
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