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Functional muscle transfer

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https://www.readbyqxmd.com/read/28441799/-treatment-of-bilateral-vocal-cord-paralysis-by-hemi-phrenic-nerve-transfer
#1
W Song, M Li, H L Zheng, L Sun, S C Chen, D H Chen, F Liu, M H Zhu, C Y Zhang, W Wang
Objective: To investigate the surgical effect of reinnervation of bilateral posterior cricoarytenoid muscles(PCA) with left hemi-phrenic nerve and endoscopic laser arytenoid resection in bilateral vocal cord fold paralysis(BVFP) and to analyze the pros and cons of the two methods. Methods: One hundred and seventeen BVFP patients who underwent reinnervation of bilateral PCA using the left hemi-phrenic nerve approach (nerve group, n=52) or laser arytenoidectomy(laser group, n=65) were enrolled in this study from Jan...
April 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28440648/fate-and-trophic-transfer-of-rare-earth-elements-in-temperate-lake-food-webs
#2
Marc Amyot, Meredith Gabrielle Clayden, Gwyneth A MacMillan, Tania Perron, Alexandre Arscott-Gauvin
Many mining projects targeting rare earth elements (REE) are in development in North America, but the background concentrations and trophic transfer of these elements in natural environments have not been well characterized. We sampled abiotic and food web components in 14 Canadian temperate lakes unaffected by mines, to assess the natural ecosystem fate of REE. Individual REE and total REE concentrations (sum of individual element concentrations, ΣREE) were strongly related with each other throughout different components of lake food webs...
April 25, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28429615/regulation-of-vascular-large-conductance-calcium-activated-potassium-channels-by-nrf2-signalling
#3
Yong Li, Xiao-Li Wang, Xiaojing Sun, Qiang Chai, Jingchao Li, Benjamin Thompson, Win-Kuang Shen, Tong Lu, Hon-Chi Lee
BK channels are major ionic determinants of vasodilation. BK channel function is impaired in diabetic vessels due to accelerated proteolysis of its beta-1 (BK-β1) subunits in response to increased oxidative stress. The nuclear factor E2-related factor-2 (Nrf2) signalling pathway has emerged as a master regulator of cellular redox status, and we hypothesized that it plays a central role in regulating BK channel function in diabetic vessels. We found that Nrf2 expression was markedly reduced in db/db diabetic mouse aortas, and this was associated with significant downregulation of BK-β1...
April 1, 2017: Diabetes & Vascular Disease Research
https://www.readbyqxmd.com/read/28428630/hinge-deleted-igg4-blocker-therapy-for-acetylcholine-receptor-myasthenia-gravis-in-rhesus-monkeys
#4
Mario Losen, Aran F Labrijn, Vivianne H van Kranen-Mastenbroek, Maarten L Janmaat, Krista G Haanstra, Frank J Beurskens, Tom Vink, Margreet Jonker, Bert A 't Hart, Marina Mané-Damas, Peter C Molenaar, Pilar Martinez-Martinez, Eline van der Esch, Janine Schuurman, Marc H de Baets, Paul W H I Parren
Autoantibodies against ion channels are the cause of numerous neurologic autoimmune disorders. Frequently, such pathogenic autoantibodies have a restricted epitope-specificity. In such cases, competing antibody formats devoid of pathogenic effector functions (blocker antibodies) have the potential to treat disease by displacing autoantibodies from their target. Here, we have used a model of the neuromuscular autoimmune disease myasthenia gravis in rhesus monkeys (Macaca mulatta) to test the therapeutic potential of a new blocker antibody: MG was induced by passive transfer of pathogenic acetylcholine receptor-specific monoclonal antibody IgG1-637...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28418396/essential-gains-and-health-after-upper-limb-tetraplegia-surgery-identified-by-the-international-classification-of-functioning-disability-and-health-icf
#5
L Bunketorp-Käll, C Reinholdt, J Fridén, J Wangdell
STUDY DESIGN: A questionnaire-based survey. OBJECTIVES: To describe functional gains and health following upper-limb tetraplegia surgery using the International Classification of Functioning, Disability and Health (ICF) as a reference and to explore interconnections across different dimensions of functioning and health. SETTING: A specialized center for advanced reconstruction of extremities at Sahlgrenska University Hospital, Gothenburg, Sweden...
April 18, 2017: Spinal Cord
https://www.readbyqxmd.com/read/28408961/the-usefulness-of-diagnostic-imaging-for-the-assessment-of-pain-symptoms-in-temporomandibular-disorders
#6
REVIEW
Shigeaki Suenaga, Kunihiro Nagayama, Taisuke Nagasawa, Hiroko Indo, Hideyuki J Majima
The causes of pain symptoms in the temporomandibular joint (TMJ) and masticatory muscle (MM) regions may not be determined by clinical examination alone. In this review, we document that pain symptoms of the TMJ and MM regions in patients with temporomandibular disorders (TMDs) are associated with computed tomography and magnetic resonance (MR) findings of internal derangement, joint effusion, osteoarthritis, and bone marrow edema. However, it is emphasized that these imaging findings must not be regarded as the unique and dominant factors in defining TMJ pain...
November 2016: Japanese Dental Science Review
https://www.readbyqxmd.com/read/28408180/exosome-mediated-mir-155-transfer-from-smooth-muscle-cells-to-endothelial-cells-induces-endothelial-injury-and-promotes-atherosclerosis
#7
Bin Zheng, Wei-Na Yin, Toru Suzuki, Xin-Hua Zhang, Yu Zhang, Li-Li Song, Li-Shuang Jin, Hong Zhan, Hong Zhang, Jin-Shui Li, Jin-Kun Wen
The vascular response to pro-atherosclerotic factors is a multifactorial process involving endothelial cells (ECs), macrophages (MACs), and smooth muscle cells (SMCs), although the mechanism by which these cell types communicate with each other in response to environmental cues is yet to be understood. Here, we show that miR-155, which is significantly expressed and secreted in Krüppel-like factor 5 (KLF5)-overexpressing vascular smooth muscle cells (VSMCs), is a potent regulator of endothelium barrier function through regulating endothelial targeting tight junction protein expression...
April 10, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28407317/reconstruction-of-quadriceps-function-with-composite-free-tissue-transfers-following-sarcoma-resection
#8
Kempland C Walley, Erin M Taylor, Megan Anderson, Santiago Lozano-Calderon, Matthew L Iorio
BACKGROUND AND OBJECTIVES Wide margin resection of a soft tissue sarcoma (STS) may require extensive removal of quadriceps muscle with or without the knee extensor mechanism. The objective of this study is to present present the use of a combined functional muscle transfer and soft tissue coverage through the use of chimeric anterolateral thigh flaps. METHODS: Patients were retrospectively reviewed who underwent deep STS resection of the anterior compartment of the thigh with functional reconstruction of knee extension using a contralateral free anterolateral thigh (ALT) flap...
April 13, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28399877/overground-vs-treadmill-based-robotic-gait-training-to-improve-seated-balance-in-people-with-motor-complete-spinal-cord-injury-a-case-report
#9
Amanda E Chisholm, Raed A Alamro, Alison M M Williams, Tania Lam
BACKGROUND: Robotic overground gait training devices, such as the Ekso, require users to actively participate in triggering steps through weight-shifting movements. It remains unknown how much the trunk muscles are activated during these movements, and if it is possible to transfer training effects to seated balance control. This study was conducted to compare the activity of postural control muscles of the trunk during overground (Ekso) vs. treadmill-based (Lokomat) robotic gait training, and evaluate changes in seated balance control in people with high-thoracic motor-complete spinal cord injury (SCI)...
April 11, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28391532/outcome-of-a-graduated-minimally-invasive-facial-reanimation-in-patients-with-facial-paralysis
#10
Laura C Holtmann, Anja Eckstein, Kerstin Stähr, Minzhi Xing, Stephan Lang, Stefan Mattheis
Peripheral paralysis of the facial nerve is the most frequent of all cranial nerve disorders. Despite advances in facial surgery, the functional and aesthetic reconstruction of a paralyzed face remains a challenge. Graduated minimally invasive facial reanimation is based on a modular principle. According to the patients' needs, precondition, and expectations, the following modules can be performed: temporalis muscle transposition and facelift, nasal valve suspension, endoscopic brow lift, and eyelid reconstruction...
April 8, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28389376/botulinum-neurotoxin-type-a-cleaved-snap25-is-confined-to-primary-motor-neurons-and-localized-on-the-plasma-membrane-following-intramuscular-toxin-injection
#11
Brian B Cai, Joseph Francis, Mitchell F Brin, Ron S Broide
The mechanism of action of botulinum neurotoxin type A (BoNT/A) is well characterized, but some published evidence suggests the potential for neuronal retrograde transport and cell-to-cell transfer (transcytosis) under certain experimental conditions. The present study evaluated the potential for these processes using a highly selective antibody for the BoNT/A-cleaved substrate (SNAP25197) combined with 3-dimensional imaging. SNAP25197 was characterized in a rat motor neuron (MN) pathway following toxin intramuscular injections at various doses to determine whether SNAP25197 is confined to MNs or also found in neighboring cells or nerve fibers within spinal cord (SC)...
April 5, 2017: Neuroscience
https://www.readbyqxmd.com/read/28387564/reliability-of-functioning-free-muscle-transfer-and-vascularized-ulnar-nerve-grafting-for-elbow-flexion-in-complete-brachial-plexus-palsy
#12
S M Potter, S I Ferris
We compared outcomes of primary vascularized ulnar nerve grafts from the C5 root neurotizing biceps and brachialis muscles, and gracilis functioning free muscle transfer neurotized by the distal spinal accessory nerve, as a primary or salvage procedure after complete brachial plexus injury. At 45 months, three of eight primary vascularized ulnar nerve graft patients regained grade 4 elbow flexion, while one regained grade 3. All 13 primary gracilis transfer patients regained grade 4 elbow flexion. Four patients with vascularized ulnar nerve grafts failed and subsequently had salvage functioning free muscle transfer procedures resulting in delayed recovery...
April 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28387164/rectus-abdominis-motor-nerves-as-donor-option-for-free-functional-muscle-transfer-a-cadaver-study-and-case-series
#13
Aaron B Mull, Michael C Nicoson, Amy M Moore, Dan A Hunter, Thomas H Tung
BACKGROUND: Current management of brachial plexus injuries includes nerve grafts and nerve transfers. However, in cases of late presentation or pan plexus injuries, free functional muscle transfers are an option to restore function. The purpose of our study was to describe and evaluate the rectus abdominis motor nerves histomorphologically and functionally as a donor nerve option for free functional muscle transfer for the reconstruction of brachial plexus injuries. METHODS: High intercostal, rectus abdominis, thoracodorsal, and medial pectoral nerves were harvested for histomorphometric analysis from 4 cadavers from levels T3-8...
April 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28370029/long-term-effects-of-systemic-gene-therapy-in-a-canine-model-of-myotubular-myopathy
#14
Matthew Elverman, Melissa A Goddard, David Mack, Jessica M Snyder, Michael W Lawlor, Hui Meng, Alan H Beggs, Ana Buj-Bello, Karine Poulard, Anthony P Marsh, Robert W Grange, Valerie E Kelly, Martin K Childers
INTRODUCTION: X-linked myotubular myopathy (XLMTM), a devastating pediatric disease caused by the absence of the protein myotubularin, results from mutations in the MTM1 gene. While there is no cure for XLMTM, we previously reported effects of MTM1 gene therapy using adeno-associated viral (AAV) vector on muscle weakness and pathology in MTM1-mutant dogs. Here, we followed 2 AAV-infused dogs over 4 years. METHODS: We evaluated gait, strength, respiration, neurological function, muscle pathology, AAV vector copy number (VCN), and transgene expression...
March 29, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28364583/creatine-kinase-in-human-erythrocytes-a-genetic-anomaly-reveals-presence-of-soluble-brain-type-isoform
#15
Laurence Kay, Malgorzata Tokarska-Schlattner, Bénédicte Quenot-Carrias, Betty Goudet, Peter Bugert, Heidwolf Arnold, Günter Scheuerbrandt, Uwe Schlattner
For maintaining energy homeostasis, creatine kinase (CK) is present at elevated levels in tissues with high and/or fluctuating energy requirements such as muscle, brain, and epithelia, while there is very few CK, if any, in peripheral blood cells. However, an ectopic expression of brain-type creatine kinase (BCK) has been reported for platelets and leukocytes in an autosomal dominant inherited anomaly named CKBE. Here we investigated CK in erythrocytes of CKBE individuals from eight unrelated families. The data revealed a varying but significant increase of CK activity in CKBE individuals as compared to controls, reaching an almost 800-fold increase in two CKBE individuals which also had increased erythrocyte creatine...
March 18, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28362931/outcome-of-finger-extension-after-nerve-transfer-to-repair-c7-t1-brachial-plexus-palsy-in-rats-comparative-study-of-the-supinator-motor-branch-transfer-to-the-posterior-interosseous-nerve-and-the-contralateral-c7-transfer-to-the-lower-trunk
#16
Lei Zhang, Chun-Lin Zhang, Zhen Dong, Yu-Dong Gu
BACKGROUND: Functional recovery following supinator motor branch transfer requires further investigation. OBJECTIVE: To compare the outcome of finger extension after supinator motor branch transfer or contralateral C7 (cC7) transfer in C7-T1 brachial plexus palsies in rats. METHODS: In this study, 120 adult rats underwent C7-T1 nerve root avulsion and received different nerve transfer repairs: group A, cC7 nerve transfer to the lower trunk; group B, supinator motor branch nerve transfer to the posterior interosseous nerve (PIN); and group C, no repair...
April 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28356443/a-microrna93-irf9-irg1-itaconic-acid-pathway-modulates-m2-like-macrophage-polarization-to-revascularize-ischemic-muscle
#17
Vijay Chaitanya Ganta, Min Hyub Choi, Anna Kutateladze, Todd E Fox, Charles R Farber, Brian H Annex
Background -Currently no therapies exist for treating, and improving outcomes in patients with severe peripheral arterial disease (PAD). MicroRNA93 (miR93) has been shown to favorably modulate angiogenesis and reduce tissue loss in genetic PAD models. However, the cell specific function, downstream mechanisms or signaling involved in miR93 mediated ischemic muscle neovascularization is not clear. Macrophages were best known to modulate arteriogenic response in PAD and the extent of arteriogenic response induced by macrophages is dependent on greater M2 to M1-activation/polarization state...
March 29, 2017: Circulation
https://www.readbyqxmd.com/read/28356434/the-growth-promoting-effect-of-dietary-nucleotides-in-fish-is-associated-with-an-intestinal-microbiota-mediated-reduction-in-energy-expenditure
#18
Xiaoze Guo, Chao Ran, Zhen Zhang, Suxu He, Min Jin, Zhigang Zhou
Background: Nucleotides have been used as functional nutrients to improve the growth and health of animals, including fish. The mechanism involved in the growth-promotion effect of nucleotides is still unclear.Objective: We investigated the bioenergetic mechanism underlying the growth-promotion effect of nucleotides in zebrafish and the associated roles played by the intestinal microbiota.Methods: Larval zebrafish were fed a control or a 0.1% mixed nucleotides-supplemented diet for 2 wk. Standard metabolic rate, the minimal rate of energy expenditure by animals at rest, was evaluated by oxygen consumption with the use of a respirometer...
March 29, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28341269/ultrasonic-bipolar-and-integrated-energy-devices-comparing-heat-spread-in-collateral-tissues
#19
Megan K Applewhite, Michael G White, Benjamin C James, Layth Abdulrasool, Edwin L Kaplan, Peter Angelos, Raymon H Grogan
BACKGROUND: Integrated devices incorporating ultrasonic and bipolar technology have been used in laparoscopic surgery, however, are not yet incorporated into open operations. Here, we compare thermal spread and recurrent laryngeal nerve (RLN) functional data of the integrated THUNDERBEAT Open Fine Jaw device, the bipolar Ligasure Small Jaw, and the ultrasonic Harmonic Focus for open thyroidectomy. MATERIALS AND METHODS: The three energy devices were compared in a live porcine model using three tissue types including liver, muscle, and thyroid...
January 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28341183/transfer-of-extensor-digiti-minimi-and-extensor-carpi-ulnaris-nerve-branches-to-the-intrinsic-motor-nerve-branches-a-histological-study-on-cadaver
#20
Hamid Namazi, Shahin HajiVandi
BACKGROUND: In cases of high ulnar and median nerve palsy, result of nerve repair in term of intrinsic muscle recovery is unsatisfactory. Distal nerve transfer can alleviate the regeneration time and improve the results. Transfer of the extensor digiti minimi (EDM) and extensor carpi ulnaris (ECU) nerve branches to the deep branch of ulnar nerve (DBUN)/ recurrent branch of median nerve (RMN) at wrist had been used to restore intrinsic hand function but, incomplete recovery occured. The axon count at the donor nerve has a strong influence on the final results...
March 21, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
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