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https://www.readbyqxmd.com/read/29161807/intravenous-dextran-70-infusion-has-protective-effects-on-ischemia-reperfusion-injury-of-kidney-an-experimental-study
#1
Atilla Semercioz, Mustafa Z Temiz, Ipek Erbarut, Ugur Izol, Serdar Aykan, Murat Tuken, Engin Kandirali
BACKGROUND: Renal ischemia-reperfusion (IR) leads to alterations of tubular epithelial cells, interstitial microvasculopathy and endothelial cell dysfunction in peritubular capillaries. Although dextrans have deteriorative effects on healthy kidney, their favorable effects on post-ischemic microvascular disturbances have been demonstrated. Therefore, we aimed to investigate in vivo effects of systemic Dextran 70 administration in kidney tissue with ischemia-reperfusion injury. METHODS: Twenty-one rats were allocated as sham, IR and IR+ Dextran 70 treatment groups...
November 21, 2017: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/29161793/effect-of-rifaximin-on-hepatic-fibrosis-in-bile-duct-ligated-rat-model
#2
Seung Kak Shin, Oh Sang Kwon, Jong Joon Lee, Yeon Ho Park, Cheol Soo Choi, Sung Hwan Jeong, Duck Joo Choi, Yun Soo Kim, Ju Hyun Kim
Background/Aims: The translocation of bacteria and their lipopolysaccharides from the gut can promote fibrosis in cirrhotic patients. The aim of this study was to investigate the effects of rifaximin on hepatic fibrosis in a bile duct-ligated rat model. Methods: The bile duct ligation (BDL) was carried out for eight days (acute injury model: sham-operated rats [G1], BDL rats [G2], and BDL rats treated with rifaximin [G3]) or 22 days (chronic injury model: sham-operated rats [G4], BDL rats [G5], and BDL rats treated with rifaximin [G6])...
November 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/29161759/asymmetry-during-functional-movement-screening-and-injury-risk-in-junior-football-players-a-replication-study
#3
Samuel Chalmers, Thomas A Debenedictis, Andrew Zacharia, Samuel Townsley, Cara Gleeson, Matthew Lynagh, Alex Townsley, Joel T Fuller
An indicator of movement quality and potential injury risk during Functional Movement Screen (FMS) testing is the presence of asymmetry when comparing the left and right sides of the body. The aim of the study was to investigate the reproducibility of the injury risk model proposed in our previous research (Chalmers et al. 2017; derivation study) that showed an increased injury risk for elite junior Australian football players demonstrating ≥2 asymmetrical FMS sub-tests. We used a direct replication design...
November 21, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29161747/a-functional-mri-exploration-of-hamstring-activation-during-the-supine-bridge-exercise
#4
Matthew Bourne, Morgan Williams, Tania Pizzari, Anthony Shield
The single leg supine bridge (SLB) is a commonly employed strengthening exercise and is used as a clinical test for hamstring function in sports, however, little is known about the patterns of muscle activation in this task. To explore these activation patterns, nine healthy, recreationally active males underwent functional magnetic resonance imaging (fMRI) of their thighs at rest and immediately after 5 sets of 10 repetitions of the SLB exercise. Exercise-induced increases in the transverse (T2) relaxation time of the biceps femoris long and short heads, semitendinosus and semimembranosus, were determined via signal intensity changes in pre- and post-exercise images and used as an index of muscle activation...
November 21, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29161746/exercise-performed-concomitantly-with-particulate-matter-exposure-inhibits-lung-injury
#5
Adriano Silva-Renno, Guilherme Crisitanini Baldivia, Manoel C Oliveira-Junior, Maysa Alves Rodrigues Brandao-Rangel, Elias El-Mafarjeh, Marisa Dolhnikoff, Thaís Mauad, Jôse Mára Britto, Paulo Hilário Nascimento Saldiva, Luis Vicente Franco Oliveira, Ana P Ligeiro-Oliveira, Gustavo Silveira Graudenz, Rodolfo Paula Vieira
Air pollution is a growing problem worldwide, inducing and exacerbating several diseases. Among the several components of air pollutants, particulate matter (PM), especially thick (10-2.5 µm; PM 10) and thin (≤2.5 µm; PM 2.5), are breathable particles that easily can be deposited within the lungs, resulting in pulmonary and systemic inflammation. Although physical activity is strongly recommended, its effects when practiced in polluted environments are questionable. Therefore, the present study evaluated the pulmonary and systemic response of concomitant treadmill training with PM 2...
November 21, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29161706/endotoxin-effects-on-cardiac-and-renal-functions-and-cardiorenal-syndromes
#6
Grazia Maria Virzì, Anna Clementi, Alessandra Brocca, Claudio Ronco
Gram-negative sepsis is a major cause of morbidity and mortality in critical ill patients. Recent findings in molecular biology and in signaling pathways have enhanced our understanding of its pathogenesis and opened up opportunities of innovative therapeutic approaches. Endotoxin plays a pivotal role in the pathogenesis of multi-organ dysfunction in the setting of gram-negative sepsis. Indeed, heart and kidney impairments seem to be induced by the release of circulating pro-inflammatory and pro-apoptotic mediators triggered by endotoxin interaction with immune cells...
November 22, 2017: Blood Purification
https://www.readbyqxmd.com/read/29161690/catechins-blunt-the-effects-of-oxldl-and-its-primary-metabolite-phosphatidylcholine-hydroperoxide-on-endothelial-dysfunction-through-inhibition-of-oxidative-stress-and-restoration-of-enos-in-rats
#7
Hao-Hsiang Chang, Chen-Yen Chien, Kuo-Hsin Chen, Shih-Chung Huang, Chiang-Ting Chien
BACKGROUND/AIMS: We explored the effects of catechins (decaffeinated green tea extracts containing (-)-epicatechin, (-)-epigallocatechin, (-)-epicatechin gallate and (-)-epigallocatechin gallate) on atherosclerosis risk factors, oxidized low-density lipoprotein (oxLDL) and its primary metabolite, phosphatidylcholine hydroperoxide (PCOOH) induced oxidative injury in cultured endothelial cell line and rats. METHODS: We used endothelial cell line and male Wistar rats to determine the effect of catechins on oxLDL or PCOOH induced oxidative injury including apoptosis, H2O2 level, vascular responses and urinary 8-isoprostane and nitrite/nitrate concentration...
November 22, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29161684/higher-versus-lower-continuous-renal-replacement-therapy-intensity-in-critically-ill-patients-with-liver-dysfunction
#8
Zachary O'Brien, Alan Cass, Louise Cole, Simon Finfer, Martin Gallagher, Colin McArthur, Shay McGuiness, John Myburgh, Rinaldo Bellomo, Johan Mårtensson
AIMS: To study the association between higher versus lower continuous renal replacement therapy (CRRT) intensity and mortality in critically ill patients with combined acute kidney injury and liver dysfunction. METHODS: Post-hoc analysis of patients with liver dysfunction (Sequential Organ Failure Assessment liver score ≥2 or diagnosis of liver failure/transplant) included in the Randomized Evaluation of Normal versus Augmented Level renal replacement therapy (RENAL) trial...
November 22, 2017: Blood Purification
https://www.readbyqxmd.com/read/29161666/genetic-variants-and-acute-kidney-injury-a-review-of-the-literature
#9
REVIEW
Daniel B Larach, Milo C Engoren, Ellen M Schmidt, Michael Heung
PURPOSE: Limited data exists on potential genetic contributors to acute kidney injury. This review examines current knowledge of AKI genomics. MATERIALS AND METHODS: 32 studies were selected from PubMed and GWAS Catalog queries for original data studies of human AKI genetics. Hand search of references identified 3 additional manuscripts. RESULTS: 33 of 35 studies were hypothesis-driven investigations of candidate polymorphisms that either did not consistently replicate statistically significant findings, or obtained significant results only in few small-scale studies...
November 13, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/29161635/temperature-dependent-conformational-dynamics-of-cytochrome-c-implications-in-apoptosis
#10
Gurusamy Muneeswaran, Subramanian Kartheeswaran, Kaliappan Muthukumar, Chandran Karunakaran
Heat, electric shock, and burn injuries induce apoptosis by releasing cytochrome c (cyt-c) from mitochondria and by subsequently activating the death protease, caspases-3. During apoptosis, cyt-c undergoes changes in the secondary structure that have been suggested to increase its peroxidase activity. Information about these structural changes will provide better understanding of the apoptotic mechanism. Hence, temperature-dependent conformational dynamics of cyt-c has been investigated through molecular dynamics (MD) simulations to explain the structural changes and to correlate them with its apoptotic behavior...
October 20, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/29161590/skin-and-its-regenerative-powers-an-alliance-between-stem-cells-and-their-niche
#11
REVIEW
Kevin Andrew Uy Gonzales, Elaine Fuchs
Tissues have a natural capacity to replace dying cells and to heal wounds. This ability resides in resident stem cells, which self-renew, preserve, and repair their tissue during homeostasis and following injury. The skin epidermis and its appendages are subjected to daily assaults from the external environment. A high demand is placed on renewal and regeneration of the skin's barrier in order to protect the body from infection and dehydration and to heal wounds. This review focuses on the epithelial stem cells of skin, where they come from, where they reside, and how they function in normal homeostasis and wound repair...
November 20, 2017: Developmental Cell
https://www.readbyqxmd.com/read/29161465/neuromuscular-electrical-stimulation-for-the-prevention-of-venous-thromboembolism
#12
REVIEW
Shahab Hajibandeh, Shahin Hajibandeh, George A Antoniou, James Rh Scurr, Francesco Torella
BACKGROUND: Venous thromboembolism (VTE) is a serious but preventable cause of morbidity and mortality. Neuromuscular electrical stimulation systems (NMES) for the prevention of VTE may be beneficial for patients in whom pharmacological or standard mechanical prophylaxis methods are contraindicated or are regarded as unsafe or impractical. Although findings of experimental studies suggest that NMES reduce venous stasis, the clinical utility and effectiveness of NMES in VTE prevention remain controversial...
November 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29161389/innovations-in-management-of-cardiac-disease-drugs-treatment-strategies-and-technology
#13
P Foëx
Within the last generation, the management of patients with heart disease has been transformed by advances in drug treatments, interventions and diagnostic technologies. The management of arterial hypertension saw beta-blockers demoted from first- to third-line treatment. Recent studies suggest that the goal of treatment may have to change to lower systolic blood pressures to prevent long-term organ damage. Today less than 15% of coronary revascularizations are surgical and more than 85% are done by interventional cardiologists inserting coronary stents...
December 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29161368/management-of-cardiac-tamponade-in-catheter-ablation-of-atrial-fibrillation-single-centre-15%C3%A2-year-experience-on-5222-procedures
#14
Rikuta Hamaya, Shinsuke Miyazaki, Hiroshi Taniguchi, Shigeki Kusa, Hiroaki Nakamura, Hitoshi Hachiya, Takatsugu Kajiyama, Tomonori Watanabe, Miyako Igarashi, Kenzo Hirao, Yoshito Iesaka
Aims: Cardiac tamponade during atrial fibrillation (AF) ablation is infrequent but potentially fatal. This study aimed to retrospectively investigate the incidence, management, and outcomes of tamponade in large patient series. Methods and results: The study analysed 5222 AF ablation procedures in 3483 patients between 2002 and 2016 under a heparin-bridge anticoagulation protocol. Cardiac tamponade occurred in 51 procedures/patients, and the incidence was 0...
November 17, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29161339/astrocyte-specific-deletion-of-sox2-promotes-functional-recovery-after-traumatic-brain-injury
#15
Chunhai Chen, Xiaoling Zhong, Derek K Smith, Wenjiao Tai, Jianjing Yang, Yuhua Zou, Lei-Lei Wang, Jiahong Sun, Song Qin, Chun-Li Zhang
Injury to the adult brain induces activation of local astrocytes, which serves as a compensatory response that modulates tissue damage and recovery. However, the mechanism governing astrocyte activation during brain injury remains largely unknown. Here we provide in vivo evidence that SOX2, a transcription factor critical for stem cells and brain development, is also required for injury-induced activation of adult cortical astrocytes. Genome-wide chromatin immunoprecipitation-seq analysis of mouse cortical tissues reveals that SOX2 binds to regulatory regions of genes associated with signaling pathways that control glial cell activation, such as Nr2e1, Mmd2, Wnt7a, and Akt2...
November 17, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29161335/shoulder-complaints-in-wheelchair-athletes-a-systematic-review
#16
Omar W Heyward, Riemer J K Vegter, Sonja de Groot, Lucas H V van der Woude
BACKGROUND: In recent years the popularity of disabled sports and competition among disabled athletes has grown considerably. With this rise in exposure of, and participation in wheelchair sports comes an increase in related stressors, including musculoskeletal load. External mechanical loading may increase the risk of shoulder complaints. The objective of this literature review was to 1) identify and describe the prevalence and/or incidence of shoulder complaints in wheelchair athletes in the literature, to 2) examine the factors and underlying mechanisms that could be potentially involved, and 3) provide some insights into the development of preventative measures...
2017: PloS One
https://www.readbyqxmd.com/read/29161323/correction-conjugated-linoleic-acid-administration-induces-amnesia-in-male-sprague-dawley-rats-and-exacerbates-recovery-from-functional-deficits-induced-by-a-controlled-cortical-impact-injury
#17
Rastafa I Geddes, Kentaro Hayashi, Quinn Bongers, Marlyse Wehber, Icelle M Anderson, Alex D Jansen, Chase Nier, Emily Fares, Gabrielle Farquhar, Amita Kapoor, Toni E Ziegler, Sivan Vadakkadath Meethal, Ian M Bird, Craig S Atwood
[This corrects the article DOI: 10.1371/journal.pone.0169494.].
2017: PloS One
https://www.readbyqxmd.com/read/29161303/nonlinear-dynamics-of-early-atherosclerotic-plaque-formation-may-determine-the-efficacy-of-high-density-lipoproteins-hdl-in-plaque-regression
#18
Alexander D Chalmers, Christina A Bursill, Mary R Myerscough
We use a computational model to explore the effect of foam cell accumulation on plaque regression following an increase in high density lipoprotein (HDL) influx into the plaque. Atherosclerotic plaque formation is the outcome of cellular and cytokine responses to low density lipoproteins (LDL) that penetrate the artery wall following an injury to the endothelium and become modified. We modelled the cells and cytokines that are most important in plaque formation using partial differential equations. The model includes monocytes and macrophages, foam cells, macrophage chemoattractants, endothelium-stimulating cytokines, modified low density lipoproteins (mod LDL) and HDL...
2017: PloS One
https://www.readbyqxmd.com/read/29161281/the-administration-of-hydrogen-sulphide-prior-to-ischemic-reperfusion-has-neuroprotective-effects-in-an-acute-stroke-model
#19
Chul-Woong Woo, Jae-Im Kwon, Kyung-Won Kim, Jeong-Kon Kim, Sang-Beom Jeon, Seung-Chae Jung, Choong-Gon Choi, Sang-Tae Kim, Jinil Kim, Su Jeong Ham, Woo-Hyun Shim, Yu Sub Sung, Hyun Kwon Ha, Yoonseok Choi, Dong-Cheol Woo
Emerging evidence has suggested that hydrogen sulfide (H2S) may alleviate the cellular damage associated with cerebral ischemia/reperfusion (I/R) injury. In this study, we assessed using 1H-magnetic resonance imaging/magnetic resonance spectroscopy (1H-MRI/MRS) and histologic analysis whether H2S administration prior to reperfusion has neuroprotective effects. We also evaluated for differences in the effects of H2S treatment at 2 time points. 1H-MRI/MRS data were obtained at baseline, and at 3, 9, and 24 h after ischemia from 4 groups: sham, control (I/R injury), sodium hydrosulfide (NaHS)-30 and NaHS-1 (NaHS delivery at 30 and 1 min before reperfusion, respectively)...
2017: PloS One
https://www.readbyqxmd.com/read/29161264/proprioceptive-assessment-in-clinical-settings-evaluation-of-joint-position-sense-in-upper-limb-post-stroke-using-a-robotic-manipulator
#20
Sara Contu, Asif Hussain, Simone Kager, Aamani Budhota, Vishwanath A Deshmukh, Christopher W K Kuah, Lester H L Yam, Liming Xiang, Karen S G Chua, Lorenzo Masia, Domenico Campolo
Proprioception is a critical component for motor functions and directly affects motor learning after neurological injuries. Conventional methods for its assessment are generally ordinal in nature and hence lack sensitivity. Robotic devices designed to promote sensorimotor learning can potentially provide quantitative precise, accurate, and reliable assessments of sensory impairments. In this paper, we investigate the clinical applicability and validity of using a planar 2 degrees of freedom robot to quantitatively assess proprioceptive deficits in post-stroke participants...
2017: PloS One
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