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https://www.readbyqxmd.com/read/28642993/impact-of-left-ventricular-longitudinal-functional-mechanics-on-the-progression-of-diastolic-function-in-diabetes-mellitus
#1
Yasuhide Mochizuki, Hidekazu Tanaka, Kensuke Matsumoto, Hiroyuki Sano, Hiroyuki Shimoura, Junichi Ooka, Takuma Sawa, Yoshiki Motoji, Keiko Ryo-Koriyama, Yushi Hirota, Wataru Ogawa, Ken-Ichi Hirata
Left ventricular (LV) diastolic dysfunction and longitudinal systolic dysfunction were identified in patients with diabetes mellitus (DM). This study's aim was to investigate the impact of LV longitudinal systolic function on LV diastolic function in DM patients with preserved LV ejection fraction (LVEF). We studied 177 DM patients with preserved LVEF (all ≥50%), and 82 age-, gender- and LVEF-matched healthy volunteers as control. Global longitudinal strain (GLS) was defined as the average peak strain of 18 segments from standard apical views, GLS <18% as subclinical LV systolic dysfunction (LVSD), and LV dispersion as the standard deviation of time-to-peak strain from the same views...
June 22, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28633264/rapidly-progressive-bioprosthetic-aortic-valve-stenosis-due-to-bartonella-species-endocarditis
#2
Kathy Schnitzer, Zafrir Or, Shtiwi Sawaed, Erez Sharoni, Naiel Bisharat
Rapid progression of valvular stenosis in the setting of infective endocarditis is extremely rare. Here we describe a patient with Bartonella endocarditis on a bioprosthetic aortic valve that caused rapidly progressive aortic stenosis without regurgitation. At operation the bioprosthetic valve was severely fibrotic and calcified, with markedly thickened and distorted leaflets and circular partial detachment from the aortic ring. The patient underwent aortic root replacement with aortic bioprosthesis and aortic grafting with reimplantation of the coronary ostia...
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28631398/transcatheter-aortic-valve-replacement-in-a-patient-with-werner-syndrome
#3
Kenta Masada, Toru Kuratani, Koichi Maeda, Kei Torikai, Yoshiki Sawa
No abstract text is available yet for this article.
June 20, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28626181/long-term-low-density-lipoprotein-apheresis-in-a-patient-with-refractory-idiopathic-membranous-glomerulonephritis
#4
Junko Yabuuchi, Tatsuya Suwabe, Hiroki Mizuno, Toshiharu Ueno, Junichi Hoshino, Akinari Sekine, Masahiro Kawada, Masayuki Yamanouchi, Noriko Hayami, Rikako Hiramatsu, Eiko Hasegawa, Naoki Sawa, Kenmei Takaichi, Takeshi Fujii, Kenichi Ohashi, Yoshifumi Ubara
A 61-year-old Japanese man developed nephrotic syndrome (NS) due to idiopathic membranous glomerulonephritis (MGN). He received immunosuppressive therapy for two years, including prednisolone, cyclophosphamide, and cyclosporine A, but the NS persisted. Low-density lipoprotein apheresis (LDL-A) was initiated at a frequency of twice a month and continued for 9 years (203 sessions in total). His proteinuria reduced to less than 1 g daily after 9 years. LDL-A was stopped, and the NS has not relapsed for five years...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28626146/mitral-valve-structure-in-addition-to-myocardial-viability-determines-the-outcome-of-functional-mitral-regurgitation-after-coronary-artery-bypass-grafting
#5
Shohei Yoshida, Satsuki Fukushima, Shigeru Miyagawa, Teruya Nakamura, Yasushi Yoshikawa, Hiroki Hata, Shunsuke Saito, Daisuke Yoshioka, Keitaro Domae, Noriyuki Kashiyama, Kouji Yamamoto, Ayumi Shintani, Satoshi Nakatani, Koichi Toda, Yoshiki Sawa
BACKGROUND: Coronary artery bypass grafting (CABG) reduces functional mitral regurgitation (MR) associated with ischemic heart disease, although the predictive factors or mechanisms of reversibility of functional MR after CABG are not fully understood.We investigated whether mitral valve structure is associated with the outcome of functional MR after CABG.Methods and Results:From a consecutive series of 98 patients with mild-moderate functional MR preoperatively who underwent isolated CABG, we enrolled 66 patients who were followed up for >1 year postoperatively using echocardiography...
June 16, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28608432/xeno-pericardial-patch-repair-of-the-inferior-vena-cava-for-radical-resection-of-renal-cell-carcinoma-with-tumor-thrombus
#6
Satsuki Fukushima, Motohide Uemura, Kunihito Gotoh, Takeshi Ujike, Hiroshi Wada, Shigeru Miyagawa, Koichi Toda, Yoshiki Sawa
BACKGROUND AND OBJECTIVES: For tumor thrombus in the inferior vena cava (IVC) complicated with kidney cancer, we built a surgical team to achieve (1) en bloc tumor resection; (2) xeno-pericardial patch IVC repair; and (3) minimum organ damages. We reviewed outcome of the case series to verify rationale of this approach. METHODS: A consecutive series of 12 patients having the IVC tumor thrombus by renal cell carcinoma in the last 3 years was enrolled. Minimum kidney ischemia was induced in five cases (Procedure I), whereas liver and kidney ischemia was induced in five cases (Procedure II)...
June 12, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28605430/intravenous-retro-uterine-echographic-surveillance-of-the-foetus-during-surgical-thrombectomy-for-life-threatening-pulmonary-thromboembolism
#7
Shin Yajima, Shunsuke Saito, Koichi Toda, Yoshiki Sawa
Pulmonary thromboembolism is a life-threatening disease, particularly during pregnancy. We report a case of successful cardiopulmonary resuscitation followed by surgical thrombectomy in a 35-year-old woman at 28 weeks of gestation. Intracardiac echocardiography was percutaneously located behind the uterus, and greatly assisted monitoring of the foetal condition and haemodynamic status.
June 12, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28605323/a-king-bolete-boletus-edulis-agaricomycetes-rna-fraction-stimulates-proliferation-and-cytotoxicity-of-natural-killer-cells-against-myelogenous-leukemia-cells
#8
Marta Kinga Lemieszek, Fernando Herminio Ferreira Milheiro Nunes, Katarzyna Sawa-Wejksza, Wojciech Rzeski
Numerous studies indicate the crucial role of natural killer (NK) cells in the prevention of tumor growth and inhibition of their metastasis, which suggests the possibility of their use in cancer treatment. This therapeutic strategy required finding a selective NK cell stimulator that, upon administration, did not disturb organism homeostasis, unlike natural activators (interleukin-2 or interleukin-12). Because the majority of anticancer agents derived from Basidiomycetes are able to stimulate lymphocytes, we describe the influence of Boletus edulis RNA on a human NK cell line (NK92)...
2017: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/28592753/recent-surgical-results-for-active-endocarditis-complicated-with-perivalvular-abscess
#9
Daisuke Yoshioka, Koichi Toda, Jun-Ya Yokoyama, Ryohei Matsuura, Shigeru Miyagawa, Yukitoshi Shirakawa, Toshiki Takahashi, Taichi Sakaguchi, Hirotsugu Fukuda, Yoshiki Sawa
BACKGROUND: Surgical treatment for endocarditis patients with a perivalvular abscess is still challenging.Methods and Results:From 2009 to 2016, 470 patients underwent surgery for active endocarditis at 11 hospitals. Of these, 226 patients underwent aortic valve surgery. We compared the clinical results of 162 patients without a perivalvular abscess, 37 patients who required patch reconstruction of the aortic annulus (PR group) and 27 who underwent aortic root replacement (ARR group)...
June 8, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28581892/radiation-exposure-enhances-hepatocyte-proliferation-in-neonatal-mice-but-not-in-adult-mice
#10
Yi Shang, Yurika Sawa, Benjamin J Blyth, Chizuru Tsuruoka, Hiroyuki Nogawa, Yoshiya Shimada, Shizuko Kakinuma
There is a natural tendency to expect that irradiation of an infant organ prior to development-related expansion will result in a higher risk of developing cancer than that of fully-developed adult tissue, and this has generally been observed. However, if tissues also vary in their initial responses to radiation depending on age, the interplay between tissue- and age-dependent risk would potentially be quite complex. We have previously shown opposing age-dependent induction of apoptosis for the intestinal epithelium and hematopoietic cells in mice, but such data are not yet available for the liver...
June 5, 2017: Radiation Research
https://www.readbyqxmd.com/read/28580527/non-occlusive-mesenteric-ischemia-in-a-patient-with-left-ventricular-assist-device-implantation
#11
Takaaki Samura, Koichi Toda, Daisuke Yoshioka, Hidekazu Takahashi, Shigeru Miyagawa, Yasushi Yoshikawa, Shunsuke Saito, Keitaro Domae, Yoshiki Sawa
Non-occlusive mesenteric ischemia (NOMI) is a devastating complication after cardiac surgery. Once patients develop NOMI, intra-mesenteric infusion of vasodilators and/or emergent laparotomy is usually required, but the mortality is extraordinarily high even with intensive treatment. We present a case of salvage of a patient with NOMI complicated with severe right ventricular dysfunction after left ventricular assist device (LVAD) implantation using maximum treatment with emergent laparotomy and temporary right ventricular assist device implantation...
June 3, 2017: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/28575486/leaf-water-maintains-daytime-transpiration-in-young-cryptomeria-japonica-trees
#12
Sawa Himeno, Wakana Azuma, Koichiro Gyokusen, H Roaki Ishii
Compared with stem water storage, leaf water storage is understudied although it may be important for alleviating water stress by contributing quickly and directly to transpiration demand. To quantify the relative contribution of stem versus leaf water storage to daily water deficit, we measured diurnal changes in transpiration rate, sap-flow velocity and stem radius of 10-year-old Cryptomeria japonica D. Don trees. We assumed that the duration of time lags between transpiration rate and sap-flow velocity reflected stored water in the stem and leaf, and that stem volume change represented water content of elastic tissue...
May 31, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28575209/clinical-standard-for-valve-area-after-common-atrioventricular-valve-plasty-for-a-single-ventricle
#13
Takashi Kido, Hiroaki Kawata, Shigemitsu Iwai, Kyoichi Nishigaki, Takayoshi Ueno, Hideto Ozawa, Yoshiki Sawa
OBJECTIVES: To determine a clinical standard for post-repair common atrioventricular valve orifice area based on mid- to long-term valve function in patients with a functional single ventricle. METHODS: The medical records of 19 single-ventricle patients who underwent common atrioventricular valve plasty from July 1988 to January 2013 were retrospectively reviewed. Bivalvation valvuloplasty was performed in 7 patients with relatively hypoplastic leaflets. The relationship between the orifice area of the repaired common atrioventricular valve measured intraoperatively and valve function and ventricular volume in the early postoperative period (median, 9...
May 31, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28559051/8-nitro-cgmp-promotes-bone-growth-through-expansion-of-growth-plate-cartilage
#14
Marie Hoshino, Kotaro Kaneko, Yoichi Miyamoto, Kentaro Yoshimura, Dai Suzuki, Takaaki Akaike, Tomohiro Sawa, Tomoaki Ida, Shigemoto Fujii, Hideshi Ihara, Junichi Tanaka, Risa Tsukuura, Daichi Chikazu, Kenji Mishima, Kazuyoshi Baba, Ryutaro Kamijo
In endochondral ossification, growth of bones occurs at their growth plate cartilage. While it is known that nitric oxide (NO) synthases are required for proliferation of chondrocytes in growth plate cartilage and growth of bones, the precise mechanism by which NO facilitates these process has not been clarified yet. C-type natriuretic peptide (CNP) also positively regulate elongation of bones through expansion of the growth plate cartilage. Both NO and CNP are known to use cGMP as the second messenger. Recently, 8-nitro-cGMP was identified as a signaling molecule produced in the presence of NO in various types of cells...
May 27, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28539222/discovery-of-novel-cyclic-peptide-inhibitors-of-dengue-virus-ns2b-ns3-protease-with-antiviral-activity
#15
Youhei Takagi, Kouhei Matsui, Haruaki Nobori, Haruka Maeda, Akihiko Sato, Takeshi Kurosu, Yasuko Orba, Hirofumi Sawa, Kazunari Hattori, Kenichi Higashino, Yoshito Numata, Yutaka Yoshida
NS2B-NS3 protease is an essential enzyme for the replication of dengue virus (DENV), which continues to be a serious threat to worldwide public health. We designed and synthesized a series of cyclic peptides mimicking the substrates of this enzyme, and assayed their activity against the DENV-2 NS2B-NS3 protease. The introduction of aromatic residues at the appropriate positions and conformational restriction generated the most promising cyclic peptide with an IC50 of 0.95μM against NS2B-NS3 protease. Cyclic peptides with proper positioning of additional arginines and aromatic residues exhibited antiviral activity against DENV...
May 10, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28506276/redo-coronary-bypass-grafting-for-congenital-left-main-coronary-atresia-a-case-report
#16
Shin Yajima, Koichi Toda, Hiroyuki Nishi, Daisuke Yoshioka, Teruya Nakamura, Shigeru Miyagawa, Yasushi Yoshikawa, Satsuki Fukushima, Yoshiki Sawa
BACKGROUND: Congenital left main coronary atresia is an extremely rare coronary anomaly. Long-term surgical outcomes and the optimal management strategies for recurrence of ischemia remain uncertain. Herein, we present a case involving successful redo coronary artery bypass grafting for unstable angina 27 years after the initial coronary artery bypass grafting for congenital left main coronary atresia. CASE PRESENTATION: A 33-year-old woman was referred to our department with unstable angina...
May 15, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28505626/discrimination-between-patients-with-alzheimer-disease-and-healthy-subjects-using-layer-analysis-of-cerebral-blood-flow-and-xenon-solubility-coefficient-in-xenon-enhanced-computed-tomography
#17
Shigeru Sase, Homaro Yamamoto, Ena Kawashima, Xin Tan, Yutaka Sawa
OBJECTIVE: The aim of this study was to develop a method for discriminating between patients with Alzheimer disease (AD) and healthy subjects using layer analysis of cerebral blood flow (CBF) and xenon solubility coefficient (λ) in xenon-enhanced computed tomography (CT). METHODS: Xenon-enhanced CT was performed on 27 patients with AD (81.7 [3.3] years old) and 15 healthy volunteers (78.6 [4.0] years old) using a wide volume CT. For each subject, we created the first- (surface) to sixth-layer images of CBF and λ for the 6 viewing directions (layer thickness, 5 mm)...
May 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28498040/pivotal-role-of-non-cardiomyocytes-in-electromechanical-and-therapeutic-potential-of-induced-pluripotent-stem-cell-derived-engineered-cardiac-tissue
#18
Hiroko Iseoka, Shigeru Miyagawa, Satsuki Fukushima, Atsuhiro Saito, Shigeo Masuda, Shin Yajima, Emiko Ito, Nagako Sougawa, Maki Takeda, Akima Harada, Jong-Kook Lee, Yoshiki Sawa
Although engineered cardiac tissues (ECTs) derived from induced pluripotent stem cells (iPSCs) are promising for myocardial regenerative therapy, the appropriate ratio of cardiomyocytes to non-cardiomyocytes is not fully understood. Here, we determined whether ECT-cell content is a key determinant of its structure/function, thereby affecting ECT therapeutic potential for advanced heart failure. Scaffold-free ECTs containing different ratios (25%, 50%, 70%, or 90%) of iPSC-derived cardiomyocytes were generated by magnetic-activated cell sorting by using cardiac-specific markers...
June 13, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28472294/disrupted-in-schizophrenia-1-disc1-protein-disturbs-neural-function-in-multiple-disease-risk-pathways
#19
Lisha Shao, Binyan Lu, Zhexing Wen, Shaolei Teng, Lingling Wang, Yi Zhao, Liyuan Wang, Koko Ishizuka, Xiufeng Xu, Akira Sawa, Hongjun Song, Guoli Ming, Yi Zhong
Although the genetic contribution is under debate, biological studies in multiple mouse models have suggested that the Disrupted-in-Schizophrenia-1 (DISC1) protein may contribute to susceptibility to psychiatric disorders. In the present study, we took the advantages of Drosophila model to dissect molecular pathways that can be affected by DISC1 in the context of pathology-related phenotypes. We found that three pathways that include the homologs of Drosophila Dys, Trio, and Shot were downregulated by introducing a C-terminal truncated mutant DISC1...
May 3, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28471634/a-highly-durable-rnai-therapeutic-inhibitor-of-pcsk9
#20
COMMENT
Shigeo Masuda, Shigeru Miyagawa, Yoshiki Sawa
New England Journal of Medicine, Volume 376, Issue 18, May 2017.
May 4, 2017: New England Journal of Medicine
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