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Creatine kinase

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https://www.readbyqxmd.com/read/28822684/cross-reactivity-and-inhibition-myotoxic-effects-induced-by-bothrops-snake-venoms-using-specific-polyclonal-anti-bnsp7-antibodies
#1
Lamartine L Melo, Mirian M Mendes, Lívia M Alves, Thais F Isabel, Sâmela A P B Vieira, Sarah N C Gimenes, Andreimar M Soares, Veridiana M Rodrigues, Luiz F M Izidoro
Polyclonal antibodies raised in Balb-c mice against BnSP-7, a Lys-49 phospholipase A2, were used to measure cross reactivity against other snake venoms. Using ELISA, these antibodies were able to recognize PLA2s isoforms present in venoms of botropic snakes at 1:6400, 1:3200 and 1:100 ratios (w/w). These antibodies highly recognized proteins of low molecular weight (∼14,000) from crude snake venom Bp and Bm by Western Blotting. PLA2 these venoms, by alignment of primary structures demonstrated high identity with BnSP-7 PLA2, especially in the C-terminal region...
August 16, 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28821685/nivolumab-related-myasthenia-gravis-with-myositis-and-myocarditis-in-japan
#2
Shigeaki Suzuki, Nobuhisa Ishikawa, Fumie Konoeda, Nobuhiko Seki, Satoshi Fukushima, Kikuko Takahashi, Hisashi Uhara, Yoshikazu Hasegawa, Shinichiro Inomata, Yasushi Otani, Kenji Yokota, Takashi Hirose, Ryo Tanaka, Norihiro Suzuki, Makoto Matsui
OBJECTIVE: To report the clinical features of myasthenia gravis (MG) induced by treatment with immune checkpoint inhibitors using 2-year safety databases based on postmarketing surveys in Japan. METHODS: We studied 10,277 patients with cancer who had received monotherapy with either nivolumab or ipilimumab between September 2014 and August 2016. As the control group, 105 patients with idiopathic MG were used. RESULTS: There were 12 MG cases (0...
August 18, 2017: Neurology
https://www.readbyqxmd.com/read/28821596/hypoxia-decreases-creatine-uptake-in-cardiomyocytes-while-creatine-supplementation-enhances-hif-activation
#3
Lucia Santacruz, Antonio Jose Luis Arciniegas, Marcus Darrabie, Jose G Mantilla, Rebecca M Baron, Dawn E Bowles, Rajashree Mishra, Danny O Jacobs
Creatine (Cr), phosphocreatine (PCr), and creatine kinases (CK) comprise an energy shuttle linking ATP production in mitochondria with cellular consumption sites. Myocytes cannot synthesize Cr: these cells depend on uptake across the cell membrane by a specialized creatine transporter (CrT) to maintain intracellular Cr levels. Hypoxia interferes with energy metabolism, including the activity of the creatine energy shuttle, and therefore affects intracellular ATP and PCr levels. Here, we report that exposing cultured cardiomyocytes to low oxygen levels rapidly diminishes Cr transport by decreasing Vmax and Km Pharmacological activation of AMP-activated kinase (AMPK) abrogated the reduction in Cr transport caused by hypoxia...
August 2017: Physiological Reports
https://www.readbyqxmd.com/read/28819543/diosmin-attenuates-methotrexate-induced-hepatic-renal-and-cardiac-injury-a-biochemical-and-histopathological-study-in-mice
#4
Mohamed M Abdel-Daim, Hesham A Khalifa, Abdelrahman Ibrahim Abushouk, Mohamed A Dkhil, Saleh A Al-Quraishy
The current study was designed to investigate the beneficial role of diosmin, a biologically active flavonoid, against methotrexate- (MTX-) induced hepatic, renal, and cardiac injuries in mice. Male Swiss albino mice received a single intraperitoneal injection of MTX (at 20 mg/kg, body weight) either alone or in combination with oral diosmin (at 50 or 100 mg/kg body weight, for 10 days). Serum was used to evaluate tissue injury markers, while hepatic, renal, and cardiac tissue samples were obtained for determination of antioxidant activity as well as histopathological examination...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28819047/unusual-case-of-bilateral-hand-weakness
#5
Sayan Datta, Jeremy Cosgrove, Taimour Alam, Helen L Ford
A 35-year-old man presented with myalgia and bilateral hand weakness, 3 days after the onset of lethargy, fevers and rigours. The hand weakness caused functional impairment including difficulty pressing keys on his mobile phone. On examination, there was mild bilateral hand weakness with normal reflexes. His serum creatine kinase was mildly raised at 503 U/L (24-195), viral PCR throat swab was negative and electromyogram showed subtle myopathic changes in the distal forearm muscles. Nerve conduction studies found no evidence of neuropathy...
August 17, 2017: Practical Neurology
https://www.readbyqxmd.com/read/28817412/effect-of-physical-methods-of-lymphatic-drainage-on-postexercise-recovery-of-mixed-martial-arts-athletes
#6
Aleksandra Zebrowska, Robert Trybulski, Robert Roczniok, Wieslaw Marcol
OBJECTIVE: Physical methods are reported to be important for accelerating skeletal muscle regeneration, decreasing muscle soreness, and shortening of the recovery time. The aim of the study was to assess the effect of the physical methods of lymphatic drainage (PMLD) such as manual lymphatic drainage (MLD), the Bodyflow (BF) therapy, and lymphatic drainage by deep oscillation (DO) on postexercise regeneration of the forearm muscles of mixed martial arts (MMA) athletes. DESIGN AND METHODS: Eighty MMA athletes aged 27...
August 16, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28815865/bone-marrow-and-adipose-mesenchymal-stem-cells-attenuate-cardiac-fibrosis-induced-by-methotrexate-in-rats
#7
Ebtehal Mohammad Fikry, Wedad A Hassan, Amany M Gad
Mesenchymal stem cells (MSCs) are an ideal adult stem cell with capacity for self-renewal and differentiation with an extensive tissue distribution. The present study evaluates the therapeutic effects of bone marrow mesenchymal stem cells (BM-MSCs) or adipose-derived mesenchymal stem cells (AD-MSCs) against the development of methotrexate (MTX)-induced cardiac fibrosis versus dexamethasone (DEX). Rats were allocated into five groups; group 1, received normal saline orally; group 2, received MTX (14 mg/kg/week for 2 weeks); groups 3 and 4, treated once with 2 × 10(6) cells of MTX + BM-MSCs and MTX + AD-MSCs, respectively; and group 5, MTX + DEX (0...
August 16, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28815734/long-term-mortality-in-patients-with-stemi-transported-primary-or-secondary-to-the-cardiac-center-and-treated-by-primary-pci
#8
Abdulwasya Almawiri, Vojacek Jan, Albahri Ziad, Jakl Martin, Stasek Josef
BACKGROUND: The purpose of this study was to compare long-term outcomes of primary transport (PT) and secondary transport (ST) in patients with STEMI. METHOD: We assigned consecutive 869 patients referred for STEMI during a 2-year period (2008-2009). The primary endpoint was to compare long-term outcomes and mortality of PT to a catheterization laboratory and ST from regional hospitals to a catheterization laboratory. Six hundred seventy-seven patients (77.9%) were enrolled for the final evaluation, 192 (22...
August 16, 2017: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/28814234/biomarkers-of-cardiovascular-risk-in-haemodialysis-patients
#9
Beata Franczyk, Anna Gluba-Brzózka, Jacek Rysz
BACKGROUND: All stages of chronic kidney disease (CKD) are associated with increased risks of atherosclerosis and cardiovascular morbidity and mortality. According to studies, levels of copeptin, growth differentiation factor-15 (GDF-15) and heart fatty-acid binding protein (h-FABP) are increased in dialysis patients. MATERIALS: This study included 50 patients (19 women, 31 men) chronically undergoing haemodialysis. The concentration of markers: copeptin, GDF-15, h-FABP, troponin and serum creatine kinase MB (CKMB) were measured with the use of ELISA tests...
August 15, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28812460/myopathic-mtdna-depletion-syndrome-due-to-mutation-in-tk2-gene
#10
Elena Martín-Hernández, María Teresa García-Silva, Pilar Quijada-Fraile, María Elena Rodríguez-García, Henry Rivera, Aurelio Hernández-Laín, David Coca-Robinot, Joaquín Fernández-Toral, Joaquín Arenas, Miguel A Martín, Francisco Martínez-Azorín
Whole-exome sequencing was used to identify the disease gene(s) in a Spanish girl with failure to thrive, muscle weakness, mild facial weakness, elevated creatine kinase, deficiency of mitochondrial complex III and depletion of mtDNA. With whole-exome sequencing data, it was possible to get the whole mtDNA sequencing and discard any pathogenic variant in this genome. The analysis of whole exome uncovered a homozygous pathogenic mutation in thymidine kinase 2 gene ( TK2; NM_004614.4:c.323 C>T, p.T108M)...
September 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28810581/protective-effect-of-glycyrrhizin-on-myocardial-ischemia-reperfusion-injury-induced-oxidative-stress-inducible-nitric-oxide-synthase-and-inflammatory-reactions-through-high-mobility-group-box-1-and-mitogen-activated-protein-kinase-expression
#11
Xiangna Cai, Xin Wang, Jilin Li, Shuying Chen
Glycyrrhizin, which is a type of perennial leguminous caudex, has been used in various Asian countries, including P.R. China, India and Japan, for thousands of years. The present study was designed to investigate the protective effect of glycyrrhizin on myocardial ischemia/reperfusion (I/R) injury through oxidative stress, inducible nitric oxide synthase (iNOS), and inflammatory reactions via high-mobility group box 1 (HMGB1) and mitogen-activated protein kinase (MAPK) expression. Sprague-Dawley rats were divided into five groups: Sham; myocardial I/R injury + non-treated; myocardial I/R injury + 2 mg/kg glycyrrhizin; myocardial I/R injury + 4 mg/kg glycyrrhizin; and myocardial I/R injury + 10 mg/kg glycyrrhizin...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810547/salvianolic-acid-a-protects-against-myocardial-ischemia-reperfusion-injury-by-reducing-platelet-activation-and-inflammation
#12
Xiaoling Yuan, Yijia Xiang, Ning Zhu, Xuyong Zhao, Shiyong Ye, Peng Zhong, Chunlai Zeng
The aim of the present study was to investigate the protective effect of salvianolic acid A (SAA) on myocardial ischemia/reperfusion injury in rats. SAA (10 mg/kg) or Tirofiban (60 µg/kg) was administered to rats by jugular vein injection 10 min before the initiation of reperfusion. After 3 h of reperfusion, platelet aggregation was measured using an aggregometer and levels of nitric oxide (NO) were detected using an ultraviolet spectrophotometer. Serum levels of cardiac troponin T (cTnT), creatine kinase isoenzyme MB (CK-MB), p-selectin, interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) were also measured 3 and 24 h after reperfusion...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28807772/streptococcus-agalactiae-impairs-cerebral-bioenergetics-in-experimentally-infected-silver-catfish
#13
Matheus D Baldissera, Carine F Souza, Belisa S Parmeggiani, Roberto C V Santos, Guilhian Leipnitz, Karen L S Moreira, Maria Izabel U M da Rocha, Marcelo L da Veiga, Bernardo Baldisserotto
It is becoming evident that bacterial infectious diseases affect brain energy metabolism, where alterations of enzymatic complexes of the mitochondrial respiratory chain and creatine kinase (CK) lead to an impairment of cerebral bioenergetics which contribute to disease pathogenesis in the central nervous system (CNS). Based on this evidence, the aim of this study was to evaluate whether alterations in the activity of complex IV of the respiratory chain and CK contribute to impairment of cerebral bioenergetics during Streptococcus agalactiae infection in silver catfish (Rhamdia quelen)...
August 12, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28807665/a-comparative-study-of-care-practices-for-young-boys-with-duchenne-muscular-dystrophy-between-japan-and-european-countries-implications-of-early-diagnosis
#14
Fumi Takeuchi, Hirofumi Komaki, Zentaro Yamagata, Kazushi Maruo, Sunil Rodger, Janbernd Kirschner, Takeo Kubota, En Kimura, Shin'ichi Takeda, Kathrin Gramsch, Julia Vry, Kate Bushby, Hanns Lochmüller, Keiji Wada, Harumasa Nakamura
Early diagnosis of Duchenne muscular dystrophy (DMD) is widely advocated to initiate proactive interventions and genetic counselling. Genetic testing now allows the diagnosis of DMD even prior to the onset of symptoms. However, little is known about care practices and their impact on young DMD boys and families after receiving an early diagnosis. We analysed 64 young boys (Japan, 19; the United Kingdom, 10; Germany, 18; Hungary, 6; Poland, 5; and the Czech Republic, 6) aged <5 years and diagnosed at ≤2 years old among the participants of the cross-sectional study about care practice in DMD...
July 6, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28807461/the-effects-of-statins-on-exercise-and-physical-activity
#15
REVIEW
Adam M Noyes, Paul D Thompson
OBJECTIVE: We sought to review studies examining the effect of statins on symptoms of exercise tolerance, markers of muscle injury and activity levels in physical active individuals. BACKGROUND: Statin therapy reduces atherosclerotic cardiovascular disease (CVD) events. Regular physical activity is also associated with reduced CVD events, but statin therapy can produce muscle complaints, which may be more frequent in physically active individuals. We reviewed the literature to determine the effects of statins on symptoms, exercise performance and activity levels in physically active individuals...
July 21, 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28807458/caveolin-3-deficiency-myopathy-associated-with-dyslipidemia-treatment-challenges-and-possible-pathophysiological-association
#16
Daiana Ibarretxe, Joan Pellejà, Nicolau Ortiz, Luis Masana
We report the case of a patient treated at the lipid clinic because of high cholesterol levels with consistently elevated creatine kinase concentrations that precluded statin treatment. Electromyography showed a rippling muscle disease pattern. A muscle biopsy confirmed caveolin 3 deficiency, and a missense mutation in the CAV3 gene was identified. The patient could be properly managed with ezetimibe and cholestyramine, which reduced the low-density lipoprotein cholesterol by 30%. He remains asymptomatic after 10 years of follow-up...
August 1, 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28806770/increasing-creatine-kinase-activity-protects-against-hypoxia-reoxygenation-injury-but-not-against-anthracycline-toxicity-in-vitro
#17
Sevasti Zervou, Hannah J Whittington, Philip J Ostrowski, Fang Cao, Jack Tyler, Hannah A Lake, Stefan Neubauer, Craig A Lygate
The creatine kinase (CK) phosphagen system is fundamental to cellular energy homeostasis. Cardiomyocytes express three CK isoforms, namely the mitochondrial sarcomeric CKMT2 and the cytoplasmic CKM and CKB. We hypothesized that augmenting CK in vitro would preserve cell viability and function and sought to determine efficacy of the various isoforms. The open reading frame of each isoform was cloned into pcDNA3.1, followed by transfection and stable selection in human embryonic kidney cells (HEK293). CKMT2- CKM- and CKB-HEK293 cells had increased protein and total CK activity compared to non-transfected cells...
2017: PloS One
https://www.readbyqxmd.com/read/28806444/eliminating-creatine-kinase-myocardial-band-testing-in-suspected-acute-coronary-syndrome-a-value-based-quality-improvement
#18
Matthew D Alvin, Allan S Jaffe, Roy C Ziegelstein, Jeffrey C Trost
Cardiac biomarker testing is estimated to occur in nearly 30 million emergency department visits nationwide each year in the United States. The American College of Cardiology/European Society of Cardiology indicate that cardiac troponin is the biomarker of choice owing to its nearly absolute myocardial tissue specificity and high clinical sensitivity for myocardial injury. Multiple academic medical centers have implemented interventions to eliminate the routine ordering of creatine kinase-myocardial band tests, with published patient safety outcomes data; however, creatine kinase-myocardial band testing is still ordered in many hospitals and emergency departments...
August 14, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28806067/immunosensor-employing-stable-solid-1-amino-2-naphthyl-phosphate-and-ammonia-borane-toward-ultrasensitive-and-simple-point-of-care-testing
#19
Jeongwook Seo, Hyeri Ha, Seonhwa Park, Al-Monsur Jiaul Haque, Sinyoung Kim, Jung Min Joo, Haesik Yang
Biosensors for ultrasensitive point-of-care testing require dried reagents with long-term stability and a high signal-to-background ratio. Although ortho-substituted diaromatic dihydroxy and aminohydroxy compounds undergo fast redox reactions, they are not used as electrochemical signaling species because they are readily oxidized and polymerized by dissolved oxygen. In this report, stable, solid 1-amino-2-naphthyl phosphate (1A2N-P) and ammonia-borane (H3N-BH3) are respectively employed as a substrate for alkaline phosphatase (ALP) and a reductant for electrochemical-chemical (EC) redox cycling...
August 14, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28804634/muscle-mri-findings-in-a-one-year-old-girl-with-merosin-deficient-congenital-muscular-dystrophy-type-1a-due-to-lama2-mutation-a-case-report
#20
Yingyin Liang, Guidian Li, Songlin Chen, Rongxing He, Xiangxue Zhou, Yingming Chen, Xue Xu, Ronglan Zhu, Cheng Zhang
The objective of the present study was to characterize the muscle magnetic resonance imaging (MRI) features of a 1-year-old girl with merosin-deficient congenital muscular dystrophy type 1A (MDC1A). Beginning as an infant, this patient exhibited severe hypotonia and proximal weakness, as well as delays in developmental milestones. Her serum creatine kinase levels at 3 months, 8 months and 1 year were 2,959, 1,621 and 1,659 U/l, respectively. Brain MRI indicated symmetric, mild T1WI low, mild T2WI and FLAIR high radial patterns in the white matter of the Cornu posterius of the ventricular lateral...
August 2017: Biomedical Reports
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