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https://www.readbyqxmd.com/read/28636254/pirfenidone-reduces-subchondral-bone-loss-and-fibrosis-after-murine-knee-cartilage-injury
#1
Deva D Chan, Jun Li, Wei Luo, Dan N Predescu, Brian J Cole, Anna Plaas
Pirfenidone is an anti-inflammatory and anti-fibrotic drug that has shown efficacy in lung and kidney fibrosis. Because inflammation and fibrosis have been linked to the progression of osteoarthritis, we investigated the effects of oral Pirfenidone in a mouse model of cartilage injury, which results in chronic inflammation and joint-wide fibrosis in mice that lack hyaluronan synthase 1 (Has1(-/-) ) in comparison to wild-type. Femoral cartilage was surgically injured in wild-type and Has1(-/-) mice, and Pirfenidone was administered in food starting after 3 days...
June 21, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28633205/advancing-the-science-of-myocardial-recovery-with-mechanical-circulatory-support-a-working-group-of-the-national-heart-lung-and-blood-institute
#2
EDITORIAL
Stavros G Drakos, Francis D Pagani, Martha S Lundberg, Timothy J Baldwin
The medical burden of heart failure (HF) has spurred interest in clinicians and scientists to develop therapies to restore the function of a failing heart. To advance this agenda, the National Heart, Lung, and Blood Institute (NHLBI) convened a Working Group of experts from June 2 to 3, 2016, in Bethesda, Maryland, to develop NHLBI recommendations aimed at advancing the science of cardiac recovery in the setting of mechanical circulatory support (MCS). MCS devices effectively reduce volume and pressure overload that drives the cycle of progressive myocardial dysfunction, thereby triggering structural and functional reverse remodeling...
July 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28633102/an-integrated-assessment-of-ceftazidime-and-photoproducts-on-the-feeding-behavior-of-rotifers-from-exposure-to-post-exposure
#3
Yanhua Liu, Yaqi Wang, Jie Zhang, Liu Sun, Anqi Zhang, Oscar Lopez Torres, Ruixin Guo, Jianqiu Chen
Compared to traditional toxicological studies, which depict the dose-effect of contaminants themselves on organisms at the given time, the exposure and post-exposure impacts of antibiotic ceftazidime and its photoproducts are carried out to systematically evaluate the environmental risk fate of ceftazidime in aquatic environments. For the exposure process, the promotion effect of ceftazidime on the feeding behavior of the rotifers decreased when the target compound was irradiated by sunlight, and the promotion effect was converted into inhibition effect, which indicated that the highest toxicity of ceftazidime on the feeding behavior of the rotifers was found after UV-B irradiation...
June 17, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28632947/pimozide-reduces-toxic-forms-of-tau-in-tauc3-mice-via-ampk-mediated-autophagy
#4
YoungDoo Kim, Eun Il Jeong, Jihoon Nah, Seung-Min Yoo, WonJae Lee, Youbin Kim, Seowon Moon, Se-Hoon Hong, Yong-Keun Jung
In neurodegenerative diseases like Alzheimer's disease (AD), tau is hyperphosphorylated and forms aggregates and neurofibrillary tangles in affected neurons. Autophagy is critical to clear the aggregates of disease-associated proteins and is often altered in patients and animal models of AD. Because mTOR (mechanistic target of rapamycin) negatively regulates autophagy and is hyperactive in the brains of patients with AD, mTOR is an attractive therapeutic target for AD. However, pharmacological strategies to increase autophagy by targeting mTOR inhibition cause various side effects...
June 20, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28632542/creation-and-execution-of-a-novel-anesthesia-perioperative-care-service-at-a-veterans-affairs-hospital
#5
Bret D Alvis, Adam B King, Pratik P Pandharipande, Liza M Weavind, Katelin Avila, Philip J Leisy, Muhammad Ajmal, Michael McHugh, Kirk A Keegan, David A Baker, Ann Walia, Christopher G Hughes
Physician-led perioperative surgical home models are developing as a method for improving the American health care system. These models are novel, team-based approaches that help to provide continuity of care throughout the perioperative period. Another avenue for improving care for surgical patients is the use of enhanced recovery after surgery pathways. These are well-described methods that have shown to improve perioperative outcomes. An established perioperative surgical home model can help implementation, efficiency, and adherence to enhanced recovery after surgery pathways...
June 16, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28631619/modeling-trans-spinal-direct-current-stimulation-for-the-modulation-of-the-lumbar-spinal-motor-pathways
#6
Alexander Kuck, Dick Stegeman, Edwin van Asseldonk
OBJECTIVE: Trans-spinal direct current stimulation (tsDCS) is a potential new technique for the treatment of spinal cord injury (SCI). TsDCS aims to facilitate plastic changes in the neural pathways of the spinal cord with a positive effect on SCI recovery. To establish tsDCS as a possible treatment option for SCI, it is essential to gain a better understanding of its cause and effects. We seek to understand the acute effect of tsDCS, including the generated electric field (EF) and its polarization effect on the spinal circuits, to determine a cellular target...
June 20, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28631256/vulnerability-to-a-metabolic-challenge-following-perinatal-asphyxia-evaluated-by-organotypic-cultures-neonatal-nicotinamide-treatment
#7
R Perez-Lobos, C Lespay-Rebolledo, A Tapia-Bustos, E Palacios, V Vío, D Bustamante, P Morales, M Herrera-Marschitz
The hypothesis of enhanced vulnerability following perinatal asphyxia was investigated with a protocol combining in vivo and in vitro experiments. Asphyxia-exposed (AS) (by 21 min water immersion of foetuses containing uterine horns) and caesarean-delivered control (CS) rat neonates were used at P2-3 for preparing triple organotypic cultures (substantia nigra, neostriatum and neocortex). At DIV 18, cultures were exposed to different concentrations of H2O2 (0.25-45 mM), added to the culture medium for 18 h...
June 19, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28630756/fast-track-in-hip-arthroplasty
#8
Torben Bæk Hansen
'Fast-track' surgery was introduced more than 20 years ago and may be defined as a co-ordinated peri-operative approach aimed at reducing surgical stress and facilitating post-operative recovery.The fast-track programmes have now been introduced into total hip arthroplasty (THA) surgery with reduction in post-operative length of stay, shorter convalescence and rapid functional recovery without increased morbidity and mortality. This has been achieved by focusing on a multidisciplinary collaboration and establishing 'fast-track' units, with a well-defined organisational set-up tailored to deliver an accelerated peri-operative course of fast-track surgical THA procedures...
May 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28629791/inositol-phosphate-signaling-as-mediator-for-growth-and-sexual-reproduction-in-podospora-anserina
#9
Ning Xie, Gwenaël Ruprich-Robert, Florence Chapeland-Leclerc, Evelyne Coppin, Hervé Lalucque, Sylvain Brun, Robert Debuchy, Philippe Silar
The molecular pathways involved in the development of multicellular fruiting bodies in fungi are still not well known. Especially, the interplay between the mycelium, the female tissues and the zygotic tissues of the fruiting bodies is poorly documented. Here, we describe PM154, a new strain of the model ascomycetes Podospora anserina able to mate with itself and that enabled the easy recovery of new mutants affected in fruiting body development. By complete genome sequencing of spod1, one of the new mutants, we identified an inositol phosphate polykinase gene as essential, especially for fruiting body development...
June 16, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28628592/genetic-variation-and-neuroplasticity-role-in-rehabilitation-after-stroke
#10
Jill Campbell Stewart, Steven C Cramer
BACKGROUND AND PURPOSE: In many neurologic diagnoses, significant interindividual variability exists in the outcomes of rehabilitation. One factor that may impact response to rehabilitation interventions is genetic variation. Genetic variation refers to the presence of differences in the DNA sequence among individuals in a population. Genetic polymorphisms are variations that occur relatively commonly and, while not disease-causing, can impact the function of biological systems. The purpose of this article is to describe genetic polymorphisms that may impact neuroplasticity, motor learning, and recovery after stroke...
July 2017: Journal of Neurologic Physical Therapy: JNPT
https://www.readbyqxmd.com/read/28628111/interaction-of-reactive-astrocytes-with-type-i-collagen-induces-astrocytic-scar-formation-through-the-integrin-n-cadherin-pathway-after-spinal-cord-injury
#11
Masamitsu Hara, Kazu Kobayakawa, Yasuyuki Ohkawa, Hiromi Kumamaru, Kazuya Yokota, Takeyuki Saito, Ken Kijima, Shingo Yoshizaki, Katsumi Harimaya, Yasuharu Nakashima, Seiji Okada
Central nervous system (CNS) injury transforms naive astrocytes into reactive astrocytes, which eventually become scar-forming astrocytes that can impair axonal regeneration and functional recovery. This sequential phenotypic change, known as reactive astrogliosis, has long been considered unidirectional and irreversible. However, we report here that reactive astrocytes isolated from injured spinal cord reverted in retrograde to naive astrocytes when transplanted into a naive spinal cord, whereas they formed astrocytic scars when transplanted into injured spinal cord, indicating the environment-dependent plasticity of reactive astrogliosis...
June 19, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28627669/recovery-of-spinal-cord-injury-following-electroacupuncture-in-rats-through-enhancement-of-wnt-%C3%AE-catenin-signaling
#12
Junfeng Zhang, Shisheng Li, Yaochi Wu
Electroacupuncture (EA) has been demonstrated to promote the functional recovery of neurons following spinal cord injury (SCI); however, the mechanisms underlying its effects have yet to be elucidated. The Wnt/β-catenin signaling pathway has been implicated in the regulation of the balance between growth, proliferation and differentiation of neural precursor cells. The present study aimed to investigate the effects of EA therapy on Wnt/β‑catenin‑regulated gene expression and neuronal recovery in rats with SCI...
June 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28626389/rac1-guides-porf-2-to-wnt-pathway-to-mediate-neural-stem-cell-proliferation
#13
Xi-Tao Yang, Guo-Hui Huang, Hong-Jiang Li, Zhao-Liang Sun, Nan-Jie Xu, Dong-Fu Feng
The molecular and cellular mechanisms underlying the anti-proliferative effects of preoptic regulator factor 2 (Porf-2) on neural stem cells (NSCs) remain largely unknown. Here, we found that Porf-2 inhibits the activity of ras-related C3 botulinum toxin substrate 1 (Rac1) protein in hippocampus-derived rat NSCs. Reduced Rac1 activity impaired the nuclear translocation of β-catenin, ultimately causing a repression of NSCs proliferation. Porf-2 knockdown enhanced NSCs proliferation but not in the presence of small molecule inhibitors of Rac1 or Wnt...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28624831/chelerythrine-attenuates-renal-ischemia-reperfusion-induced-myocardial-injury-by-activating-cse-h2s-via-pkc-nf-%C3%AE%C2%BAb-pathway-in-diabetic-rats
#14
Bo Hu, Guangtao Xu, Yongxia Zheng, Fei Tong, Ping Qian, Xiaoyan Pan, Xinmei Zhou, Ruilin Shen
BACKGROUND/AIMS: Chelerythrine (CHE), a benzophenanthridine alkaloid, is a potent, selective, and cell-permeable protein kinase C (PKC) inhibitor. The purpose of the present study was to evaluate the effect of CHE on myocardial recovery after renal ischemia/reperfusion (I/R)-induced myocardial injury (RI/RMI) in a streptozocin (STZ)-induced diabetic rat model. METHODS: Diabetes mellitus (DM) rats preconditioned with CHE and D, L-propargylglycine (PAG) were subjected to renal I/R...
2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/28624824/effect-of-tnf-%C3%AE-inhibition-on-bone-marrow-derived-mesenchymal-stem-cells-in-neurological-function-recovery-after-spinal-cord-injury-via-the-wnt-signaling-pathway-in-a-rat-model
#15
Ren-Jun Peng, Bing Jiang, Xi-Ping Ding, He Huang, Yi-Wei Liao, Gang Peng, Quan Cheng, Jian Xi
AIM: The present study aimed to examine the effect of tumor necrosis factor-α (TNF-α) inhibition on bone marrow-derived mesenchymal stem cells (BMSCs) in neurological function recovery after spinal cord injury (SCI) via the Wnt signaling pathway in a rat model. METHODS: The rat model of SCI was established using Allen's method. Seventy-two adult male Sprague Dawley (SD) rats were randomly assigned into 4 groups (18 rats in each group): the sham control group, saline control group, BMSCs group (injection with BMSCs at the injured site) and BMSCs + TNF-α group (injection with BMSCs under TNF-α treatment at the injured site)...
June 15, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28624657/adiponectin-improves-the-osteointegration-of-titanium-implant-under-diabetic-conditions-by-reversing-mitochondrial-dysfunction-via-the-ampk-pathway-in-vivo-and-in-vitro
#16
Xiao-Fan Hu, Lin Wang, Yi-Zhao Lu, Geng Xiang, Zi-Xiang Wu, Ya-Bo Yan, Yang Zhang, Xiong Zhao, Yuan Zang, Lei Shi, Wei Lei, Ya-Fei Feng
Diabetes-induced reactive oxygen species (ROS) overproduction would result in compromised osteointegration of titanium implant (TI) and high rate of implant failure, yet the underlying mechanisms remain elusive. Adiponectin (APN) is a fat-derived adipocytokine with strong antioxidant, mitochondrial-protective and anti-diabetic efficacies. We hypothesized that mitochondrial dysfunction under diabetes may account for the oxidative stress in osteoblasts and titanium-bone interface (TBI) instability, which could be ameliorated by APN...
June 14, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28624572/role-of-beta-catenin-and-endocannabinoids-in-the-nucleus-accumbens-in-extinction-in-rats-exposed-to-shock-and-reminders
#17
Nachshon Korem, Rachel Lange, Cecilia J Hillard, Irit Akirav
The response to a traumatic experience may be rapid recovery or development of psychopathology such as posttraumatic stress disorder (PTSD). Impaired extinction of fear memories is thought to contribute to the development of the persistent trauma memories and avoidance. The Wnt/β-catenin pathway and the endocannabinoid system appear to play significant roles in anxiety and depressive symptoms. Here we examined the involvement of β-catenin in the nucleus accumbens (NAc) in extinction in rats exposed to the shock and reminders model of PTSD...
June 14, 2017: Neuroscience
https://www.readbyqxmd.com/read/28624392/role-of-fractalkine-cx3cr1-signaling-pathway-in-the-recovery-of-neurological-function-after-early-ischemic-stroke-in-a-rat-model
#18
Yan-Zhi Liu, Chun Wang, Qian Wang, Yong-Zhong Lin, Yu-Song Ge, Dong-Mei Li, Geng-Sheng Mao
This study aims to explore the role of fractalkine/CX3C chemokine receptor 1 (CX3CR1) signaling pathway in the recovery of neurological functioning after an early ischemic stroke in rats. After establishment of permanent middle cerebral artery occlusion (pMCAO) models, 50 rats were divided into blank, sham, model, positive control and CX3CR1 inhibitor groups. Neurological impairment, walking and grip abilities, and cortical and hippocampal infarctions were evaluated by Zea Longa scoring criterion, beam-walking assay and grip strength test, and diffusion-weighted magnetic resonance imaging...
June 14, 2017: Life Sciences
https://www.readbyqxmd.com/read/28623570/enhanced-recovery-protocols-in-total-joint-arthroplasty-a-review-of-the-literature-and-their-implementation
#19
REVIEW
A S Galbraith, E McGloughlin, J Cashman
BACKGROUND: During recent years, there has been an exponential demand for joint arthroplasty, which has coincided with the global economic recession. In response, the management of patients following arthroplasty is continuously evolving, with the average inpatient length of stay decreasing from weeks to days, and more recently, we have witnessed the development of "outpatient arthroplasty" as a novel concept which aims to address the high volume of patients. The reduction in length of stay has been made possible via implementation of "enhanced recovery programmes" encompassing each stage of the patient journey...
June 16, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28622711/curcumin-accelerates-the-repair-of-sciatic-nerve-injury-in-rats-through-reducing-schwann-cells-apoptosis-and-promoting-myelinization
#20
Zhiwei Zhao, Xiaoling Li, Qing Li
BACKGROUND: Schwann cells (SCs) play an indispensable role in the repair and regeneration of injured peripheral nerve. Curcumin can reduce SCs apoptosis, and promote the regeneration and functional recovery of injured peripheral nerves. However, the corresponding mechanisms are not clear. OBJECTIVE: The article was aimed to explore the effect and corresponding mechanisms of curcumin on the repair of sciatic nerve injury in rats. METHODS: After surgery induced sciatic nerve injury, the model rats were divided into three groups and treated with curcumin, curcumin+PD98059 and curcumin+IGF-1 respectively for 4days...
June 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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