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https://www.readbyqxmd.com/read/28549587/neuronally-differentiated-adipose-derived-stem-cells-and-aligned-phbv-nanofiber-nerve-scaffolds-promote-sciatic-nerve-regeneration
#1
Feihu Hu, Xiaofeng Zhang, Haixia Liu, Peng Xu, Doulathunnisa, Gaojun Teng, Zhongdang Xiao
Through a combination of biomaterials and stem cells, tissue engineering strategies for restoring and regenerating damaged peripheral nerves have recently been used to meet the challenges posed by nerve injury. In a previous study, we revealed a new way to induce neuronal differentiation of stem cells based on the temporally sequential use of miR-218 and Fibroblast Growth Factor 2 (FGF2) in vitro (FGF2-miR-218 induction approach). In the present study, we sought to investigate the application of this novel approach in repairing sciatic nerve damage in vivo...
May 23, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28546769/treatment-of-chronic-low-back-pain-new-approaches-on-the-horizon
#2
REVIEW
Nebojsa Nick Knezevic, Shane Mandalia, Jennifer Raasch, Ivana Knezevic, Kenneth D Candido
Back pain is the second leading cause of disability among American adults and is currently treated either with conservative therapy or interventional pain procedures. However, the question that remains is whether we, as physicians, have adequate therapeutic options to offer to the patients who suffer from chronic low back pain but fail both conservative therapy and interventional pain procedures before they consider surgical options such as discectomy, disc arthroplasty, or spinal fusion. The purpose of this article is to review the potential novel therapies that are on the horizon for the treatment of chronic low back pain...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28545853/elevated-sympathetic-activity-endothelial-dysfunction-and-late-hypertension-after-repair-of-coarctation-of-the-aorta
#3
Melissa G Y Lee, Robyn A Hemmes, Jonathan Mynard, Elisabeth Lambert, Geoffrey A Head, Michael M H Cheung, Igor E Konstantinov, Christian P Brizard, Gavin Lambert, Yves d'Udekem
BACKGROUND: There is a high prevalence of late hypertension after coarctation repair. The relative contribution of elevated sympathetic tone and endothelial dysfunction to its development is unknown. This study aims to investigate the neural profile of coarctation patients including muscle sympathetic nerve activity testing to directly measure sympathetic nervous activity. METHODS: Twenty-three patients aged ≥18years with a coarctation repair underwent measurements of clinic and 24-h blood pressures, muscle sympathetic nerve activity, sympathetic and cardiac baroreflex functions, digital endothelial function, and ambulatory arterial stiffness index...
May 19, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28545516/improving-the-regenerative-potential-of-olfactory-ensheathing-cells-by-overexpressing-prostacyclin-synthetase-and-its-application-in-spinal-cord-repair
#4
May-Jywan Tsai, Chi-Ting Huang, Yong-San Huang, Ching-Feng Weng, Song-Kun Shyue, Ming-Chao Huang, Dann-Ying Liou, Yan-Ru Lin, Chu-Hsun Cheng, Huai-Sheng Kuo, Yilo Lin, Meng-Jen Lee, Wen-Hung Huang, Wen-Cheng Huang, Henrich Cheng
BACKGROUND: Olfactory ensheathing cells (OEC), specialized glia that ensheathe bundles of olfactory nerves, have been reported as a favorable substrate for axonal regeneration. Grafting OEC to injured spinal cord appears to facilitate axonal regeneration although the functional recovery is limited. In an attempt to improve the growth-promoting properties of OEC, we transduced prostacyclin synthase (PGIS) to OEC via adenoviral (Ad) gene transfer and examined the effect of OEC with enhanced prostacyclin synthesis in co-culture and in vivo...
May 25, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28542074/nerve-regeneration-and-functional-recovery-when-neurorrhaphy-performed-at-the-early-distraction-osteogenesis-an-experimental-study
#5
Byung Jun Kim, Jeong Mok Cho, Sung Tack Kwon
Distraction osteogenesis is widely used in many clinical situations, but distraction in cases accompanying nerve injury has been avoided due to concern of unfavorable effect on nerve regeneration by traction. This study evaluated the feasibility of early distraction lengthening after neurorrhaphy. Thirty-six rats were evenly distributed into 3 groups (12 rats in each group); neurorrhaphy and distraction (group I), neurorrhaphy and osteotomy without distraction (group II), and only distraction without neurorrhaphy (group III), respectively...
May 24, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28538803/comparative-study-between-standard-and-inside-out-vein-graft-techniques-on-sciatic-nerve-repair-of-rats-muscular-and-functional-analysis
#6
Cleuber Rodrigo de Souza Bueno, Mizael Pereira, Idvaldo Aparecido, Rogerio Leone Buchaim, Jesus Carlos Andreo, Antônio de Castro Rodrigues, Geraldo Marco
Purpose: To compare the functional result of standart vein grafts and inside-out vein graft technique on sciatic nerve repair. Methods: We used 24 male Wistar rats divided into 4 groups: control group (CG), standard vein graft group (SVG), Inside-out vein graft group (IOVG) and denervated Group (DG). SVG, IOVG and DG underwent total section of the sciatic nerve, SVG and IOVG however underwent nerve repair surgery using a graft with normal jugular vein and inside-out jugular vein, respectively...
April 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28537569/inguinal-pain-syndrome-the-influence-of-intraoperative-local-administration-of-0-5-bupivacaine-on-postoperative-pain-control-following-lichtenstein-hernioplasty-a-prospective-case-control-study
#7
Bartosz Cybułka
With current technological advancement and availability of synthetic materials used in inguinal hernia repair, a recurrence after first intervention is not a common and important adverse event. On the other hand, however, some patients complain about chronic pain of the operated site after surgeries using a polypropylene mesh. Many patients are constrained to a prolonged use of analgesics and increased frequency of control visits, which may eventually result in loss of trust in the operator. Every surgical intervention is associated with the risk of immediate or delayed complications...
April 30, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28534301/effects-of-acetyl-l-carnitine-in-diabetic-neuropathy-and-other-geriatric-disorders
#8
REVIEW
G Sergi, S Pizzato, F Piovesan, C Trevisan, N Veronese, E Manzato
A long history of diabetes mellitus and increasing age are associated with the onset of diabetic neuropathy, a painful and highly disabling complication with a prevalence peaking at 50% among elderly diabetic patients. Acetyl-L-carnitine (ALC) is a molecule derived from the acetylation of carnitine in the mitochondria that has an essential role in energy production. It has recently been proposed as a therapy to improve the symptoms of diabetic neuropathy. ALC is widely distributed in mammalian tissues, including the brain, blood-brain barrier, brain neurons, and astrocytes...
May 22, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/28532897/mast-cells-improve-functional-recovery-of-transected-peripheral-nerve-a-novel-preliminary-study
#9
Behrooz Ilkhanizadeh, Leila Zarei, Negin Farhad, Mehran Bahrami-Bukani, Rahim Mohammadi
BACKGROUND: Employment of regenerative properties of cells at the service of nerve repair has been initiated during recent decades. Effects of local transplantation of bone marrow-derived mast cells on peripheral nerve regeneration were studied using a rat sciatic nerve transection model. MATERIALS AND METHODS: A 10-mm sciatic nerve defect was bridged using a conduit chitosan-based hybrid conduit filled with BMMCs in BMMC group. In positive control group (Pos), the conduit was filled with phosphate-buffered saline alone...
May 11, 2017: Injury
https://www.readbyqxmd.com/read/28529011/the-effect-of-in-vivo-created-vascularized-neurotube-on-peripheric-nerve-regeneration
#10
Abdul Kerim Yapici, Yalcin Bayram, Hakan Akgun, Recep Gumus, Fatih Zor
INTRODUCTION: Creating vascularized nerve conduits for treatment of nerve gaps have been researched, however, these methods need microsurgical anastomosis thereby complicating the nerve repair process. Thus, the concept of vascularized nerve conduits has not popularized up till now. The aim of this study is to evaluate the effects of vascularized and non-vascularized biological conduits on peripheral nerve regeneration. MATERIAL AND METHODS: Following ethical board approval, 15 Sprague-Dawley rats were used in the study...
May 11, 2017: Injury
https://www.readbyqxmd.com/read/28528013/congenital-h-type-tracheoesophageal-fistula-a-multicenter-review-of-outcomes-in-a-rare-disease
#11
Sara C Fallon, Jacob C Langer, Shawn D St Peter, KuoJen Tsao, Caroline M Kellagher, Dave R Lal, Jill S Whitehouse, Diana L Diesen, Michael D Rollins, Elizabeth Pontarelli, Marcus M Malek, Corey W Iqbal, Jeffrey S Upperman, Charles M Leys, Mark L Wulkan, Sarah J Hill, Martin L Blakely, Timothy D Kane, David E Wesson
OBJECTIVE: To perform a multicenter review of outcomes in patients with H-type tracheoesophageal fistula (TEF) in order to better understand the incidence and causes of post-operative complications. BACKGROUND: H-type TEF without esophageal atresia (EA) is a rare anomaly with a fundamentally different management algorithm than the more common types of EA/TEF. Outcomes after surgical treatment of H-type TEF are largely unknown, but many authoritative textbooks describe a high incidence of respiratory complications...
May 11, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28525999/is-soft-tissue-repair-a-right-choice-to-avoid-early-dislocation-after-tha-in-posterior-approach
#12
Yiqin Zhou, Shiqi Cao, Lintao Li, Manoj Narava, Qiwei Fu, Qirong Qian
BACKGROUND: Dislocation is the second most common complication after total hip arthroplasty (THA). The effectiveness of soft tissue repair to reduce dislocation rate is still debated and thus a meta-analysis was conducted. METHODS: A systematic search in PubMed, Embase, and Cochrane databases was conducted for this meta-analysis. INCLUSION CRITERIA: clinical comparative trials on the use of soft tissue repair including rotators and capsule repair in primary THA...
May 19, 2017: BMC Surgery
https://www.readbyqxmd.com/read/28522972/recent-advances-in-the-study-of-bipolar-rod-shaped-microglia-and-their-roles-in-neurodegeneration
#13
Ngan Pan Bennett Au, Chi Him Eddie Ma
Microglia are the resident immune cells of the central nervous system (CNS) and they contribute to primary inflammatory responses following CNS injuries. The morphology of microglia is closely associated with their functional activities. Most previous research efforts have attempted to delineate the role of ramified and amoeboid microglia in the pathogenesis of neurodegenerative diseases. In addition to ramified and amoeboid microglia, bipolar/rod-shaped microglia were first described by Franz Nissl in 1899 and their presence in the brain was closely associated with the pathology of infectious diseases and sleeping disorders...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28521852/upper-limb-nerve-transfers-a-review
#14
A Forli, M Bouyer, M Aribert, C Curvale, M Delord, D Corcella, F Moutet
While upper limb nerve transfers were first described and performed several years ago, they have seen expanded use in the past 20 years. Initially indicated for surgical repair of brachial plexus injuries with nerve root avulsion, the indications have been extended to post-ganglionic lesions because of the excellent results of certain intraplexus nerve transfers. The traditional nerve repair techniques - primary suture and nerve grafting - form the basis of nerve surgery. Although nerve transfer does not replace them, they are a useful supplement as they provide a targeted approach to reinnervation and recovery of key functions of the upper limb...
June 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28521032/a-neglected-cause-of-iatrogenic-brachial-plexus-injuries-in-psychiatric-patients
#15
José Fernando Guedes-Corrêa, Maristella Reis da Costa Pereira, Francisco José Lourenço Torrão-Junior, José Vicente Martins, Daniel Alves Neiva Barbosa
BACKGROUND: Psychiatric patients are often kept immobilized during hospitalization to avoid self-inflicted injuries and danger to third parties. Inadequate positioning can lead to brachial plexus injuries (BPI). OBJECTIVE: To present a series of 5 psychiatric patients with BPI after being left sedated and restrained for prolonged periods of time during hospitalization. METHODS: We retrospectively reviewed the charts of 5 psychiatric patients with iatrogenic BPI referred by other institutions to our service...
May 18, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28518137/nerve-growth-factor-from-chinese-cobra-venom-stimulates-chondrogenic-differentiation-of-mesenchymal-stem-cells
#16
Zhenhui Lu, Danqing Lei, Tongmeng Jiang, Lihui Yang, Li Zheng, Jinmin Zhao
Growth factors such as transforming growth factor beta1 (TGF-β1), have critical roles in the regulation of the chondrogenic differentiation of mesenchymal stem cells (MSCs), which promote cartilage repair. However, the clinical applications of the traditional growth factors are limited by their high cost, functional heterogeneity and unpredictable effects, such as cyst formation. It may be advantageous for cartilage regeneration to identify a low-cost substitute with greater chondral specificity and easy accessibility...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28511287/generation-and-characterization-of-highly-purified-canine-schwann-cells-from-spinal-nerve-dorsal-roots-as-potential-new-candidates-for-transplantation-strategies
#17
Nicole Steffensen, Annika Lehmbecker, Ingo Gerhauser, Yimin Wang, Regina Carlson, Andrea Tipold, Wolfgang Baumgärtner, Veronika M Stein
Schwann cells (SCs) are promising candidates for transplantation-strategies in the central nervous system by promoting axonal regeneration. The dog represents a translational model for human spinal cord injury (SCI) for studies with new repair strategies after intervertebral disk herniation (IVDH). To overcome the necessity for an additional surgical procedure, for the first time a protocol for isolation, and purification of canine SCs from spinal-nerve-biopsies during standard hemilaminectomy in IVDH affected paraplegic dogs for potential transplantation was developed...
May 16, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28507996/effects-of-pulsed-electromagnetic-field-with-predatory-stress-on-functional-and-histological-index-of-injured-sciatic-nerve-in-rat
#18
Maryam Tasbih-Forosh, Leila Zarei, Ehsan Saboory, Mehran Bahrami-Bukani
OBJECTIVE: To assess the effect of combination of pulsed electromagnetic fields (PEMF) with predatory stress on transected sciatic nerve regeneration in rats. METHODS: In sham- operated group (SOG) the nerve was manipulated and left intact. The 10-mm rat sciatic nerve gap was created in rats. In transected group (Transected) nerve stumps were sutured to adjacent muscle and in vein graft group (VG) the gap was bridged using an inside-out vein graft. In VG/PEMF group the transected nerve was bridged using vein graft, phosphate buffered saline was administered into the graft and the whole body was exposed to PEMF...
April 2017: Bulletin of Emergency and Trauma
https://www.readbyqxmd.com/read/28506533/schwann-cell-precursors-from-human-pluripotent-stem-cells-as-a-potential-therapeutic-target-for-myelin-repair
#19
Han-Seop Kim, Jungwoon Lee, Da Yong Lee, Young-Dae Kim, Jae Yun Kim, Hyung Jin Lim, Sungmin Lim, Yee Sook Cho
Schwann cells play a crucial role in successful nerve repair and regeneration by supporting both axonal growth and myelination. However, the sources of human Schwann cells are limited both for studies of Schwann cell development and biology and for the development of treatments for Schwann cell-associated diseases. Here, we provide a rapid and scalable method to produce self-renewing Schwann cell precursors (SCPs) from human pluripotent stem cells (hPSCs), using combined sequential treatment with inhibitors of the TGF-β and GSK-3 signaling pathways, and with neuregulin-1 for 18 days under chemically defined conditions...
May 11, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28501137/supinator-to-ulnar-nerve-transfer-via-in-situ-anterior-interosseous-nerve-bridge-to-restore-intrinsic-muscle-function-in-combined-proximal-median-and-ulnar-nerve-injury-a-novel-cadaveric-study
#20
Hamid Namazi, Shahin HajiVandi
BACKGROUND: In cases of high ulnar nerve palsy, result of nerve repair in term of intrinsic muscle recovery is unsatisfactory. Distal nerve transfer can diminish the regeneration time and improve the results. But, there was no perfect distal nerve transfer for restoring intrinsic hand function in combined proximal median and ulnar nerve injuries. This cadaveric study aims to evaluate the possibility and feasibility of supinator nerve transfer to motor branch of ulnar nerve (MUN). METHODS: Ten cadaveric upper limbs dissected to identify the location of the supinator branch, anterior interosseous nerve (AIN), and MUN...
May 1, 2017: Journal of Surgical Research
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