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Tohoku Journal of Experimental Medicine

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https://www.readbyqxmd.com/read/27904025/early-raas-blockade-exerts-renoprotective-effects-in-autosomal-recessive-alport-syndrome
#1
Nao Uchida, Naonori Kumagai, Kandai Nozu, Xue Jun Fu, Kazumoto Iijima, Yoshiaki Kondo, Shigeo Kure
Alport syndrome is a progressive renal disease caused by mutations in COL4A3, COL4A4, and COL4A5 genes that encode collagen type IV alpha 3, alpha 4, and alpha 5 chains, respectively. Because of abnormal collagen chain, glomerular basement membrane becomes fragile and most of the patients progress to end-stage renal disease in early adulthood. COL4A5 mutation causes X-linked form of Alport syndrome, and two mutations in either COL4A3 or COL4A4 causes an autosomal recessive Alport syndrome. Recently, renin-angiotensin-aldosterone system (RAAS) blockade has been shown to attenuate effectively disease progression in Alport syndrome...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27904005/study-design-and-baseline-characteristics-of-the-expand-study-evaluation-of-effectiveness-and-safety-of-xa-inhibitor-rivaroxaban-for-the-prevention-of-stroke-and-systemic-embolism-in-a-nationwide-cohort-of-japanese-patients-diagnosed-as-non-valvular-atrial
#2
Takanori Ikeda, Hirotsugu Atarashi, Hiroshi Inoue, Shinichiro Uchiyama, Takanari Kitazono, Takeshi Yamashita, Wataru Shimizu, Masahiro Kamouchi, Koichi Kaikita, Koji Fukuda, Hideki Origasa, Ichiro Sakuma, Keijiro Saku, Yasuo Okumura, Yuichiro Nakamura, Hideo Morimoto, Naoki Matsumoto, Akihito Tsuchida, Junya Ako, Nobuyoshi Sugishita, Shogo Shimizu, Hiroaki Shimokawa
The use of rivaroxaban, a factor Xa inhibitor, has been increasing for prevention of ischemic stroke and systemic embolism in patients with non-valvular atrial fibrillation (AF) in Japan. We conducted the nationwide multicenter study, termed as the EXPAND Study, to address its effectiveness and safety in the real-world practice of patients with non-valvular AF in Japan. The EXPAND Study is a prospective, non-interventional, observational cohort study to evaluate the effectiveness and safety of rivaroxaban in non-valvular AF patients in a real-world clinical practice...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27890871/chagas-disease-in-mexico-report-of-14-cases-of-chagasic-cardiomyopathy-in-children
#3
Paz María Salazar-Schettino, Margarita Cabrera-Bravo, Clara Vazquez-Antona, Edgar Zenteno, Mariana De Alba-Alvarado, Elia Torres Gutierrez, Yolanda Guevara Gomez, María Gabriela Perera-Salazar, Guadalupe Garcia de la Torre, Martha Irene Bucio-Torres
Chagas disease is a parasitic infection mainly found in Latin America; it is transmitted by a triatomine, also known as assassin bug or kissing bug. In humans, the parasite causes mostly cardiac disorders. Two-thirds of the Mexican territory are regarded as risk areas for vector transmission of Trypanosoma cruzi, the causal agent. The parasite can be found as a blood-borne trypomastigote or as an intracellular amastigote. The progression and severity of lesions could be due to frequent reinfections or to infection by highly virulent strains...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27890870/improving-the-quality-of-postgraduate-education-in-traditional-japanese-kampo-medicine-for-junior-residents-an-exploratory-survey-conducted-in-five-institutions-in-the-tohoku-area
#4
Shin Takayama, Seiichi Kobayashi, Soichiro Kaneko, Masao Tabata, Shinya Sato, Keiichi Ishikawa, Saya Suzuki, Ryutaro Arita, Natsumi Saito, Tetsuharu Kamiya, Hitoshi Nishikawa, Yuka Ikeno, Junichi Tanaka, Minoru Ohsawa, Akiko Kikuchi, Takehiro Numata, Hitoshi Kuroda, Michiaki Abe, Satoru Ishibashi, Nobuo Yaegashi, Tadashi Ishii
Traditional Japanese (Kampo) medicine has been widely applied in general medicine in Japan. In 2001, the model core curriculum for Japanese medical education was revised to include Kampo medicine. Since 2007, all 80 Japanese medical schools have incorporated it within their programs. However, postgraduate training or instruction of Kampo medicine has not been recognized as a goal for the clinical training of junior residents by Japan's Ministry of Health, Labour and Welfare; little is known about postgraduate Kampo medicine education...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27885198/the-difference-between-ideal-and-actual-fasting-duration-in-the-treatment-of-patients-with-aspiration-pneumonia-a-nationwide-survey-of-clinicians-in-japan
#5
Tsuneaki Kenzaka, Koki Kosami, Yasufumi Matsuoka, Ayako Noda, Ayako Kumabe
In Japan, aspiration pneumonia is common among the elderly and patients are often treated by temporary discontinuation of meals. However, there are few published studies on the fasting duration for aspiration pneumonia treatment. Therefore, we conducted the present study to assess the opinions of clinicians regarding the fasting duration for the treatment of patients with aspiration pneumonia and the actual medical practice with regard to oral ingestion in hospitalized patients with aspiration pneumonia. We targeted hospitals with internal medicine and respiratory medicine departments across Japan...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27867155/handgrip-strength-is-positively-associated-with-mildly-elevated-serum-bilirubin-levels-among-community-dwelling-adults
#6
Ryuichi Kawamoto, Daisuke Ninomiya, Teru Kumagi
Handgrip strength (HGS) is a useful measure of health-related quality of life and general muscle strength. Serum total bilirubin (T-B) may present potential beneficial effects in preventing oxidative changes which are associated with a risk of metabolic syndrome and the development of cardiovascular disease. Limited information is available regarding whether HGS is an independent confounding factor for serum T-B. The study participants were 214 men aged 71 ± 8 (mean ± standard deviation) years and 302 women aged 71 ± 7 years that were enrolled consecutively from among paticipants aged ≥ 50 years through an annual check-up process...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27853054/expression-of-cyp11b2-in-aldosterone-producing-adrenocortical-adenoma-regulatory-mechanisms-and-clinical-significance
#7
Yasuhiro Nakamura, Yuto Yamazaki, Yuta Tezuka, Fumitoshi Satoh, Hironobu Sasano
Aldosterone-producing adrenocortical adenoma (APA) is responsible for the majority of cases clinically diagnosed as primary aldosteronism. Aldosterone synthase (CYP11B2) is one of the enzymes that play essential roles in aldosterone synthesis and is involved in the pathogenesis of APA. Recent studies have demonstrated that various factors and regulators influence the expression and function of CYP11B2 in APA. In particular, somatic mutations, such as gain-of-function and loss-of-function mutations, have been identified in several genes, each of which encodes a pivotal protein that affects the calcium signaling pathway, the expression of CYP11B2, and aldosterone production...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27840374/%C3%AE-lipoic-acid-treatment-improves-vision-related-quality-of-life-in-patients-with-dry-age-related-macular-degeneration
#8
Yuan Tao, Pengfei Jiang, Yuhua Wei, Ping Wang, Xiaoling Sun, Hong Wang
Dry form of age-related macular degeneration (AMD) constitutes 90% of AMD cases, and it is characterized by the formation of drusen under the retina and the slow breakdown of the light-sensing cells in the macula, which causes a gradual loss of central vision. Since oxidative stress is involved in the pathogenesis of dry AMD, α-lipoic acid (LA) with antioxidant properties was selected, and its effect on anti-oxidative markers and visual quality in patients with dry AMD was assessed. A total of 100 dry AMD patients (60-83 years old) were randomly assigned to LA treatment group (n = 50) and placebo control group (n = 50)...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27840373/early-pregnancy-factor-enhances-the-generation-and-function-of-cd4-cd25-regulatory-t-cells
#9
Quangang Chen, Xiaorong Zhu, Renjin Chen, Jing Liu, Peng Liu, Ankang Hu, Lianlian Wu, Hui Hua, Honghua Yuan
The mechanisms of fetal semi-allograft acceptance by the mother's immune system have been the target of many immunological studies. Early pregnancy factor (EPF) is a molecule present in the serum of pregnant mammals soon after conception that has been reported to have immunomodulatory effects. In the present study, we aimed to determine whether immune cells such as CD4(+)CD25(+) regulatory T cells (Tregs) are involved in the suppressive mechanism of EPF. Accordingly, CD4(+)CD25(-) T cells were isolated from spleens of female C57BL/6 mice and stimulated with anti-CD3 antibody, anti-CD28 antibody and IL-2 in the presence or absence of EPF...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27818460/different-expression-patterns-of-toll-like-receptor-mrnas-in-blood-mononuclear-cells-of-iga-nephropathy-and-iga-vasculitis-with-nephritis
#10
Ayano Saito, Atsushi Komatsuda, Hajime Kaga, Ryuta Sato, Masaru Togashi, Shin Okuyama, Hideki Wakui, Naoto Takahashi
Mucosal immunity may play a key role in IgA nephropathy (IgAN) and IgA vasculitis with nephritis (IgAVN). IgAVN is characterized by the presence of non-thrombocytopenic palpable purpura, associated with glomerulonephritis with IgA-dominant immune deposits. Recent studies have shown the up-regulation of Toll-like receptors (TLRs) in patients with IgAN or IgAVN. Among TLRs that mediate innate immune reactions, TLR2, TLR4, and TRL5 recognize bacterial components, while TLR3, TLR7, and TLR9 recognize viral components...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27803433/prognostic-significance-of-late-potentials-in-outpatients-with-type-2-brugada-electrocardiogram
#11
Makoto Nakano, Koji Fukuda, Masateru Kondo, Masato Segawa, Michinori Hirano, Takahiko Chiba, Kyoshiro Fukasawa, Keita Miki, Susumu Morosawa, Hiroaki Shimokawa
Brugada syndrome is characterized by distinguishing electrocardiogram (ECG) patterns (coved and saddle-back types with day-to-day variation) and occurrence of lethal tachy-arrhythmias. The appearance of coved type ECG (type 1) is required for the diagnosis of Brugada syndrome, whereas the significance of saddle-back type ECG (type 2), which is inadequate for the diagnosis, has not been fully established. We enrolled 34 consecutive patients with type 2 ECG on outpatient-clinic. Among them, 7 patients were ventricular fibrillation (VF) survivors who were diagnosed as Brugada syndrome with transient appearance of type 1 ECG, and showed type 2 ECG on their first outpatient-clinic visit after the VF event (VF group)...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27773910/team-based-learning-a-learning-strategy-for-clinical-reasoning-in-students-with-problem-based-learning-tutorial-experiences
#12
Yumiko Okubo, Naoko Ishiguro, Taiyo Suganuma, Toshio Nishikawa, Toshio Takubo, Noriko Kojimahara, Rie Yago, Shinichi Nunoda, Shigetaka Sugihara, Toshimasa Yoshioka
No abstract text is available yet for this article.
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27773909/blunted-autonomic-responses-and-low-grade-inflammation-in-mongolian-adults-born-at-low-birth-weight
#13
Sarina Bao, Emi Kanno, Ryoko Maruyama
Low birth weight (LBW) has been considered as a risk factor for adult hypertension that is associated with deterioration of autonomic functions and low-grade inflammation. To explore the above effects of LBW, we measured blood pressure (BP) and heart rate variability during postural change from a supine position to a sitting position in 21 healthy Mongolian adults aged 23-34 years: 4 with LBW (birth weight < 2,500 g), 13 with normal birth weight (NBW, 2,500 g ≤ birth weight < 4,000 g), and 4 with high birth weight (HBW, ≥ 4,000 g)...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27760897/a-term-infant-of-neonatal-toxic-shock-syndrome-like-exanthematous-disease-complicated-with-hemophagocytic-syndrome
#14
Akimune Kaga, Hiroshi Watanabe, Hiroki Miyabayashi, Takaya Metoki, Setsuko Kitaoka, Satoru Kumaki
Neonatal toxic shock syndrome-like exanthematous disease (NTED) is a newly recognized neonatal infectious disease, caused by the superantigen toxic shock syndrome toxin-1 (TSST-1). TSST-1 is mainly produced by methicillin-resistant Staphylococcus aureus, and the immune responses to TSST-1 are known to cause toxic shock syndrome, a life-threatening infectious disease. The clinical symptoms of NTED are skin rash, fever, and thrombocytopenia, but severe thrombocytopenia is rare in term infants with NTED. Although the cause of NTED is the same as that of toxic shock syndrome, the clinical symptoms of NTED are milder than toxic shock syndrome...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27760896/gustatory-salivation-is-associated-with-body-mass-index-daytime-sleepiness-and-snoring-in-healthy-young-adults
#15
Satoshi Izumi, Guang Hong, Koh Iwasaki, Masayuki Izumi, Yusuke Matsuyama, Mirei Chiba, Takashi Toda, Tada-Aki Kudo
The taste detection system for oral fatty acid may be related to obesity. In addition, sleep is intrinsically and closely related to food intake and metabolism. However, the association of gustatory salivation with body mass index (BMI), daytime sleepiness, or sleep habits is largely unknown. Therefore, we evaluated the relationship between gustatory salivation and BMI, Epworth sleepiness scale (ESS, a daytime sleepiness scale) or sleep habits among 26 healthy young individuals (20 males and 6 females; mean age: 26...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27746423/beneficial-effects-of-human-papillomavirus-vaccine-for-prevention-of-cervical-abnormalities-in-miyagi-japan
#16
Nobuyoshi Ozawa, Kiyoshi Ito, Toru Tase, Hirohito Metoki, Nobuo Yaegashi
Prevention of cervical cancer has been unsuccessful in Japan because of low rates of cancer screening and vaccination. The Vaccine Adverse Review Committee of the Japanese Government investigated 2,475 adverse events and reported 617 (6.9/100,000) severe cases and 176 (2.0/100,000) cases with chronic pain. The proactive recommendation for human papillomavirus (HPV) vaccination has been suspended since June 2013. In this study, we examined vaccination rate and incidence of abnormal cervical cytology in women aged 20 to 24 years attending cancer screening in Miyagi...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27725571/cerebral-functional-response-during-eyelid-opening-closing-with-bell-s-phenomenon-and-volitional-vertical-eye-movements-in-humans
#17
Yukihisa Suzuki, Motohiro Kiyosawa, Kiichi Ishiwata, Keiichi Oda, Kenji Ishii
Bell's phenomenon is a physiological phenomenon wherein the eye ball involuntarily rolls upward during eyelid closing. Although this phenomenon occurs in healthy individuals, the neural mechanism related to Bell's phenomenon has not yet been identified. We aimed to investigate the brain regions relevant to Bell's phenomenon and volitional eye movement using [(15)O] H2O and positron emission tomography (PET). We measured regional cerebral blood flow (rCBF) in 8 normal subjects under 3 conditions: at rest with eyes closed, during opening and closing of the eyelids in response to sound stimuli (lid opening/closing), and during vertical movement of the eyes with lids closed in response to sound stimuli (volitional eye movement)...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27725531/prevalence-and-risk-factors-of-respiratory-viral-infections-in-exacerbations-of-chronic-obstructive-pulmonary-disease
#18
Hyun Jung Kwak, Dong Won Park, Jee Eun Kim, Min Kyung Park, Gun Woo Koo, Tai Sun Park, Ji-Yong Moon, Tae Hyung Kim, Jang Won Sohn, Ho Joo Yoon, Dong Ho Shin, Sang-Heon Kim
Exacerbations of chronic obstructive pulmonary disease (COPD) lead to high morbidity and mortality. Respiratory virus infection is considered as one of the important causes of COPD exacerbations. The aim of this study was to assess the prevalence of respiratory virus infection in COPD exacerbations and to find the factors associated with susceptibility to viral infections. Furthermore, we tried to examine if COPD exacerbations caused by viral infections have more severe clinical outcomes in comparison with those with non-viral causes...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27682223/questionnaire-based-development-of-an-educational-program-of-traditional-japanese-kampo-medicine
#19
Shin Takayama, Seiichi Ishii, Fumie Takahashi, Natsumi Saito, Ryutaro Arita, Soichiro Kaneko, Masashi Watanabe, Tetsuharu Kamiya, Hidekazu Watanabe, Hitoshi Nishikawa, Yuka Ikeno, Junichi Tanaka, Minoru Ohsawa, Akiko Kikuchi, Takehiro Numata, Hitoshi Kuroda, Michiaki Abe, Takashi Takeda, Nobuo Yaegashi, Tadashi Ishii
Traditional Japanese Kampo medicine has been widely used in clinical practice in Japan. Though it is a compulsory subject in Japanese medical schools, a standard educational program in Kampo medicine does not exist. Tohoku University has incorporated Kampo medicine into clinical education via didactic lectures since 2003; however, student evaluations have been lower for Kampo than for all other clinical specialties. We administered a questionnaire about a Kampo medicine course for fifth-year students from 2009 to 2012 and developed an educational program based on feedback obtained...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27644403/activation-of-ppar%C3%AE-by-fatty-acid-accumulation-enhances-fatty-acid-degradation-and-sulfatide-synthesis
#20
Yang Yang, Yuyao Feng, Xiaowei Zhang, Takero Nakajima, Naoki Tanaka, Eiko Sugiyama, Yuji Kamijo, Toshifumi Aoyama
Very-long-chain acyl-CoA dehydrogenase (VLCAD) catalyzes the first reaction in the mitochondrial fatty acid β-oxidation pathway. VLCAD deficiency is associated with the accumulation of fat in multiple organs and tissues, which results in specific clinical features including cardiomyopathy, cardiomegaly, muscle weakness, and hepatic dysfunction in infants. We speculated that the abnormal fatty acid metabolism in VLCAD-deficient individuals might cause cell necrosis by fatty acid toxicity. The accumulation of fatty acids may activate peroxisome proliferator-activated receptor (PPAR), a master regulator of fatty acid metabolism and a potent nuclear receptor for free fatty acids...
2016: Tohoku Journal of Experimental Medicine
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