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https://www.readbyqxmd.com/read/29042932/cardioprotective-effect-of-notch-signaling-on-the-development-of-myocardial-infarction-complicated-by-diabetes-mellitus
#1
Fang Wu, Bo Yu, Xu Zhang, Yuelan Zhang
The present study aimed to elucidate the role of Notch signaling in the development of myocardial infarction (MI) concomitant with diabetes in vivo and in vitro and evaluated the therapeutic effect of the Notch signaling in vitro. Streptozotocin-induced diabetic rats were subjected to 25 min of ischemia and 2 h of reperfusion. Cardiac troponin T (cTnT) and creatine kinase-MB (CK-MB) isoenzyme levels were detected. Infarct size was measured by 2,3,5-triphenyltetrazolium chloride staining. Myocardial apoptosis and fibrosis were examined by terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling and Masson Trichrome staining, respectively...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29040909/treatment-with-fenofibrate-plus-a-low-dose-of-benznidazole-attenuates-cardiac-dysfunction-in-experimental-chagas-disease
#2
Ágata C Cevey, Gerardo A Mirkin, Martín Donato, María J Rada, Federico N Penas, Ricardo J Gelpi, Nora B Goren
Trypanosoma cruzi induces serious cardiac alterations during the chronic infection. Intense inflammatory response observed from the beginning of infection, is critical for the control of parasite proliferation and evolution of Chagas disease. Peroxisome proliferator-activated receptors (PPAR)-α, are known to modulate inflammation. In this study we investigated whether a PPAR-α agonist, Fenofibrate, improves cardiac function and inflammatory parameters in a murine model of T. cruzi infection. BALB/c mice were sequentially infected with two T...
October 7, 2017: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/29040663/heart-type-fatty-acid-binding-protein-h-fabp-and-highly-sensitive-troponin-t-hstnt-as-markers-of-myocardial-injury-and-cardiovascular-events-in-elective-percutaneous-coronary-intervention-pci
#3
M Connolly, J Shand, M Kinnin, I Menown, M J Kurth, J Lamont, D Mc Eneaney
OBJECTIVES: To assess the prognostic value of biomarkers of myocardial injury following elective percutaneous coronary intervention (PCI). BACKGROUND: Type 4a myocardial infarction (MI) occurs when myocardial injury is combined with either symptoms suggestive of myocardial ischaemia, new left bundle branch block, angiographic loss of patency of a major artery or imaging suggestive of new loss of myocardium. Myocardial injury is defined as a rise of > 5 x 99th upper reference limit (URL) of 14ng/L (i...
October 10, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/29040223/effect-of-losartan-on-the-acute-response-of-human-elderly-skeletal-muscle-to-exercise
#4
Mette Flindt Heisterberg, Jesper L Andersen, Peter Schjerling, Jacob Bülow, Jeppe Bo Lauersen, Heidi L Roeber, Michael Kjaer, Abigail L Mackey
PURPOSE: To investigate the effect of blocking the angiotensin II type I receptor (AT1R) upon the response to acute heavy resistance exercise in elderly human skeletal muscle. The hypothesis was that AT1R blocking would result in a superior myogenic response accompanied by downregulation of TGF-β and upregulation of IGF-1 signalling. METHODS: 28 healthy elderly men (+64 years) were randomized into two groups, consuming either AT1R blocker (Losartan, 100mg/day) or Placebo for 18 days prior to exercise...
October 16, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29039798/the-effect-of-taurine-on-the-recovery-from-eccentric-exercise-induced-muscle-damage-in-males
#5
Yanita McLeay, Stephen Stannard, Matthew Barnes
Eccentric exercise is known to bring about microstructural damage to muscle, initiating an inflammatory cascade involving various reactive oxygen species. This, in turn, can significantly impair physical performance over subsequent days. Taurine, a powerful endogenous antioxidant, has previously been shown to have a beneficial effect on muscle damage markers and recovery when taken for a few days to several weeks prior to eccentric exercise. However, to date no studies have looked at the effects of supplementing over the days following eccentric exercise on performance recovery...
October 17, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29039526/promoting-effects-of-il%C3%A2-23-on-myocardial-ischemia-and-reperfusion-are-associated-with-increased-expression-of-il%C3%A2-17a-and-upregulation-of-the-jak2%C3%A2-stat3-signaling-pathway
#6
Yanxi Liao, Xiaorong Hu, Xin Guo, Bofang Zhang, Weipan Xu, Hong Jiang
Interleukin (IL)‑23, as a novel pro‑inflammatory cytokine, is important in several inflammatory diseases, including myocardial ischemia and reperfusion (I/R) injury, however, the underlying mechanism remains to be elucidated. The present study was designed to investigate the specific role of IL‑23 in myocardial I/R injury, and whether the Janus kinase 2/signal transducer and activator of transcription 3 (JAK2‑STAT3) signaling pathway, one of the important downstream signaling pathways of IL‑23, and the IL‑17A downstream pro‑inflammatory cytokine, were involved...
October 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29039314/effects-of-puerarin-on-lipopolysaccharide-induced-myocardial-dysfunction-in-isolated-rat-hearts
#7
Zhang Shaojun, Xu Yanyan, Chen Jian, Zheng Xia, Fang Qiang, Jiang Saiping
Myocardial dysfunction is a serious complication induced by sepsis. Puerarin is an oriental medicine that possesses therapeutic benefits for cardiovascular diseases. The aim of this study was to evaluate the anti-myocardial dysfunction effects of puerarin in isolated rat hearts induced by lipopolysaccharide- and compare the myocardial protective effects between the different concentrations of puerarin. Isolated hearts were attached to a Langendorff apparatus and perfused with lipopolysaccharide (LPS) and different concentrations of puerarin...
July 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29038156/human-toxicity-caused-by-indole-and-indazole-carboxylate-synthetic-cannabinoid-receptor-agonists-from-horizon-scanning-to-notification
#8
Simon L Hill, Michael Dunn, Céline Cano, Suzannah J Harnor, Ian R Hardcastle, Johann Grundlingh, Paul I Dargan, David M Wood, Simon Tucker, Thomas Bartram, Simon H L Thomas
BACKGROUND: The emergence of novel psychoactive substances (NPS), particularly synthetic cannabinoid receptor agonists (SCRA), has involved hundreds of potentially harmful chemicals in a highly dynamic international market challenging users', clinicians', and regulators' understanding of what circulating substances are causing harm. We describe a toxicovigilance system for NPS that predicted the UK emergence and identified the clinical toxicity caused by novel indole and indazole carboxylate SCRA...
October 16, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/29038020/the-ca-2-camkk2-axis-mediates-the-telbivudine-induces-upregulation-of-creatine-kinase-implications-for-mechanism-of-antiviral-nucleoside-analogs-side-effect
#9
Long Jianfei, Wang Min, Ma Chunlai, Chen Bicui, Zhang Jiming, Wang Bin
Telbivudine (LdT), a widely prescribed anti-hepatitis B virus (HBV) drug for the treatment of chronic Hepatitis B (CHB), causes adverse reactions ranging from creatine kinase (CK) elevation to myopathy. The purpose of this study was to explore the mechanism(s) of LdT induced CK elevation. The effects of LdT on mitochondrial morphology and proteins (TK2 and β-actin), oxidative stress, intracellular Ca(2+) levels, Ca(2+)-related signaling pathway (CaMKK2/AMPK), and Ca(2+)-related biomarkers such as superoxide dismutase (SOD) and malondialdehyde (MDA) were assessed in human skeletal muscle cells (HSKMCs)...
October 13, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29037390/effect-of-feeding-rumen-protected-capsule-containing-niacin-k2so4-vitamin-c-and-gamma-aminobutyric-acid-on-heat-stress-and-performance-of-dairy-cows
#10
W J Guo, L Zhen, J X Zhang, S Lian, H F Si, J R Guo, H M Yang
This study was conducted to evaluate the effects of supplemental rumen-protected capsule (RPC) on animal performance, serological indicators, and serum heat shock protein 70 (HSP70) of lactating Holstein cows under heat stress (HS). During summer months, 30 healthy multiparous lactating Holstein cows with a parity number of 3.1 ± 0.44, 70 ± 15 d in milk, an average body weight of 622 ± 62kg, and an average milk yield of 32.28 ± 0.96kg/d, were used. The cows were randomly allocated to two groups: a control group and an RPC-supplemented group (0...
October 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/29036976/-comparison-of-perioperative-serum-thrombomodulin-levels-in-patients-underwent-off-pump-coronary-artery-bypass-grafting-with-and-without-cardiogenic-shock
#11
L Zhang, C Wang, T X Gu, C M Lu, Z W Wang
Objective: To observe the perioperative changes of serum thrombomodulin in patients with and without cardiogenic shock undergoing off-pump coronary artery bypass grafting surgery. Methods: A total of 66 patients with coronary artery disease who underwent off-pump coronary artery bypass grafting surgery between June and December 2015 in our hospital were included in this study.The patients were divided into non-cardiogenic shock group (n=51) and shock group (n=15) according to the absence or presence of cardiogenic shock...
September 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/29036760/the-effects-of-downhill-and-uphill-exercise-training-on-osteogenesis-related-factors-in-ovariectomy-induced-bone-loss
#12
Yun-Seok Kang, Chun-Ho Kim, Jeong-Seok Kim
PURPOSE: Recent evidence suggests that regular exercise training plays a decisive role in maintaining homeostasis and promoting muscle and skeletal formation. However, the effect of downhill exercise training on osteogenesis-related factors is not well understood. METHODS: Thus, we investigated the effect of uphill and downhill training on ovariectomy (OVX)-induced bone loss. After ovary removal, the exercise method performed included uphill (16 m/min, +15°) and downhill training (16 m/min, -15°) for 60 min/day and 5 days/week, respectively, for 8 weeks...
September 30, 2017: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/29035826/effects-of-gallic-acid-on-hemodynamic-parameters-and-infarct-size-after-ischemia-reperfusion-in-isolated-rat-hearts-with-alloxan-induced-diabetes
#13
Fatemeh Ramezani-Aliakbari, Mohammad Badavi, Mahin Dianat, Seyed Ali Mard, Akram Ahangarpour
Diabetic rats are more susceptible to myocardial ischemia-reperfusion injury than control rats. The aim of the present study was to evaluate the cardioprotective effect of gallic acid (GA) on isolated rat hearts with alloxan-induced diabetes mellitus. Adult male Sprague-Dawley rats were divided randomly into three groups: control, untreated diabetic and diabetic animals treated with (GA, 25mg/kg). Diabetes was induced by 120mg/kg alloxan injection. Eight weeks after GA administration, the hearts were isolated and exposed to myocardial ischemia-reperfusion...
October 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29035436/cardioprotective-effect-of-the-sdf-1%C3%AE-cxcr4-axis-in-ischemic-postconditioning-in-isolated-rat-hearts
#14
Jeong Su Kim, Youngho Jang, June Hong Kim, Yong Hyun Park, Sun Ae Hwang, Jun Kim, Sung Ryul Lee, Zhelong Xu, Changill Ban, Kyohan Ahn, Kook Jin Chun
BACKGROUND AND OBJECTIVES: Information about the role of the stromal cell-derived factor-1α (SDF-1α)/chemokine receptor type 4 (CXCR4) axis in ischemic postconditioning (IPOC) is currently limited. We hypothesized that the SDF-1α/CXCR4 signaling pathway is directly involved in the cardioprotective effect of IPOC. METHODS: Isolated rat hearts were divided into four groups. The control group was subjected to 30-min of regional ischemia and 2-hour of reperfusion (n=12)...
September 18, 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/29034199/cardioprotective-effects-of-achillea-wilhelmsii-on-the-isolated-rat-heart-in-ischemia-reperfusion
#15
M Mahmoudabady, M Lashkari, S Niazmand, M Soukhtanloo
CONTEXT: There are some reports about protective effects of Achillea on the heart. OBJECTIVE: We investigated the effect of Achillea wilhelmsii extract on cardiac function during ischemia-reperfusion (I/R) injury in the isolated rat heart. MATERIALS AND METHODS: 60 male Wistar rats were randomly divided into 6 groups; 1: Control group, 2: Control-ischemia (CI) 3: vitamin C (10 mg/kg), 4-6: Extract groups (E 100, E 200 and E 400 mg/kg). The animals received normal saline, vitamin C or A...
October 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29033851/effects-of-alpha-lactalbumin-or-whey-protein-isolate-on-muscle-damage-muscle-pain-and-mood-states-following-prolonged-strenuous-endurance-exercise
#16
Lu Qin, Stephen H S Wong, Feng-Hua Sun, Yu Huang, Sinead Sheridan, Cindy H P Sit
This study compared the effect of alpha-lactalbumin and whey protein on muscle damage, muscle pain, and mood states during short term recovery following strenuous prolonged exercise. In a two-stage crossover counterbalanced design, 12 endurance male runners were recruited (age: 30.4 ± 2.8 year, height: 172.7 ± 5.6 cm, body mass: 66.7 ± 6.5 kg, VO2max: 58.0 ± 6.9 ml/kg(-)/min), ran for 90 min at 70% VO2max, and followed by a 4-h recovery. Two treatments (carbohydrate+alpha-lactalbumin, CA; carbohydrate+whey protein isolate, CW) were applied during the main trials...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29033058/3d-interdigitated-electrode-array-in-the-microchannel-free-of-reference-and-counter-electrodes
#17
Dahye Lee, Sunmi Lee, Jihun Rho, Woohyuk Jang, Seok Hee Han, Taek Dong Chung
We demonstrate the three-dimensional (3D) interdigitated array (IDA) chip that operates without reference and counter electrodes, which are necessary components to apply enough potential to trigger the intended redox process, but used unwieldy for chip-based electrochemical detection. Using the electrode configuration, we propose a unique electrochemical system that is capable of controlling applied potential to a pair of working electrodes despite absence of reference and counter electrodes by fixing the electron transfer mediator on the electrodes in a microchannel...
September 29, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29031242/dietary-creatine-supplementation-lowers-hepatic-triacylglycerol-by-increasing-lipoprotein-secretion-in-rats-fed-high-fat-diet
#18
Robin P da Silva, Kelly-Ann Leonard, René L Jacobs
Recent studies have shown that dietary creatine supplementation can prevent lipid accumulation in the liver. Creatine is a small molecule that plays a large role in energy metabolism, but since the enzyme creatine kinase is not present in the liver, the classical role in energy metabolism does not hold in this tissue. Fat accumulation in the liver can lead to the development of nonalcoholic fatty liver disease (NAFLD), a progressive disease that is prevalent in humans. We have previously reported that creatine can directly influence lipid metabolism in cell culture to promote lipid secretion and oxidation...
September 1, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29030880/direct-saturation-corrected-chemical-exchange-saturation-transfer-mri-of-glioma-simplified-decoupling-of-amide-proton-transfer-and-nuclear-overhauser-effect-contrasts
#19
Iris Yuwen Zhou, Enfeng Wang, Jerry S Cheung, Dongshuang Lu, Yang Ji, Xiaoan Zhang, Giulia Fulci, Phillip Zhe Sun
PURPOSE: Chemical exchange saturation transfer (CEST) MRI has shown promise in tissue characterization in diseases like stroke and tumor. However, in vivo CEST imaging such as amide proton transfer (APT) MRI is challenging because of concomitant factors such as direct water saturation, macromolecular magnetization transfer, and nuclear overhauser effect (NOE), which lead to a complex contrast in the commonly used asymmetry analysis (MTRasym). Here, we propose a direct saturation-corrected CEST (DISC-CEST) analysis for simplified decoupling and quantification of in vivo CEST effects...
October 13, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29030453/gaba-alterations-in-pediatric-sport-concussion
#20
Seth D Friedman, Andrew V Poliakov, Christopher Budech, Dennis W W Shaw, David Breiger, Thomas Jinguji, Brian Krabak, David Coppel, Tressa Mattioli Lewis, Samuel Browd, Jeffrey G Ojemann
OBJECTIVE: To evaluate whether frontal-lobe magnetic resonance spectroscopy measures of γ-aminobutyric acid (GABA) would be altered in a sample of adolescents scanned after sport concussion because mild traumatic brain injury is often associated with working memory problems. METHODS: Eleven adolescents (age 14-17 years) who had sustained a first-time sport concussion were studied with MRI/magnetic resonance spectroscopy within 23 to 44 days after injury (mean 30...
October 13, 2017: Neurology
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