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sensory nerve and bone

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https://www.readbyqxmd.com/read/28516219/decreased-sensory-nerve-excitation-and-bone-pain-associated-with-mouse-lewis-lung-cancer-in-trpv1-deficient-mice
#1
Hiroki Wakabayashi, Satoshi Wakisaka, Toru Hiraga, Kenji Hata, Riko Nishimura, Makoto Tominaga, Toshiyuki Yoneda
Bone pain is one of the most common and life-limiting complications of cancer metastasis to bone. Although the mechanism of bone pain still remains poorly understood, bone pain is evoked as a consequence of sensitization and excitation of sensory nerves (SNs) innervating bone by noxious stimuli produced in the microenvironment of bone metastases. We showed that bone is innervated by calcitonin gene-related protein (CGRP)(+) SNs extending from dorsal root ganglia (DRG), the cell body of SNs, in mice. Mice intratibially injected with Lewis lung cancer (LLC) cells showed progressive bone pain evaluated by mechanical allodynia and flinching with increased CGRP(+) SNs in bone and augmented SN excitation in DRG as indicated by elevated numbers of pERK- and pCREB-immunoreactive neurons...
May 17, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28490668/-trka-cking-why-no-pain-no-gain-is-the-rule-for-bone-formation
#2
Benjamin Levi
Peripheral sensory nerves expressing TrkA innervate long bones and stimulate bone formation through the Wnt/β-catenin pathway when placed under stress.
May 10, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28457632/low-intensity-pulsed-ultrasound-induced-spinal-fusion-is-coupled-with-enhanced-calcitonin-gene-related-peptide-expression-in-rat-model
#3
Xiao-Yi Zhou, Xi-Ming Xu, Sui-Yi Wu, Fei Wang, Zi-Cheng Zhang, Yi-Lin Yang, Ming Li, Xian-Zhao Wei
Low-intensity pulsed ultrasound (LIPUS) has been found to accelerate fracture healing. In this study, we analyzed the role of calcitonin gene-related peptide (CGRP) in a rat spinal fusion model treated with LIPUS. The results revealed that LIPUS significantly increases bone formation, and the process was coupled with elevated CGRP innervation. CGRP was located in fibrous tissue, closely surrounding the allograft and newly formed cartilage. The density of CGRP peaked at week 3 after surgery in both the control (non-LIPUS-treated) and LIPUS-treated groups...
April 27, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28452955/peripheral-nerve-fibers-and-their-neurotransmitters-in-osteoarthritis-pathology
#4
REVIEW
Susanne Grässel, Dominique Muschter
The importance of the nociceptive nervous system for maintaining tissue homeostasis has been known for some time, and it has also been suggested that organogenesis and tissue repair are under neuronal control. Changes in peripheral joint innervation are supposed to be partly responsible for degenerative alterations in joint tissues which contribute to development of osteoarthritis. Various resident cell types of the musculoskeletal system express receptors for sensory and sympathetic neurotransmitters, allowing response to peripheral neuronal stimuli...
April 28, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28443600/retroauricular-approach-for-targeted-cochlear-therapy-experiments-in-wistar-albino-rats
#5
Selçuk Mülazimoğlu, Emre Ocak, Gülşah Kaygusuz, Mustafa Kürşat Gökcan
BACKGROUND: As the idea of stem cell technology in the treatment of sensorial hearing loss has emerged over the past decades, the need for in vivo models for related experiments becomes explicit. One of the most common experimental models for inner ear stem cell delivery experiments is the Wistar albino rat (WAR). AIMS: To investigate the surgical anatomy of the temporal bone of the WAR with respect to the dissection steps, operative techniques, and potential pitfalls from surgery...
April 6, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28438966/mediation-of-movement-induced-breakthrough-cancer-pain-by-ib4-binding-nociceptors-in-rats
#6
Joshua Havelin, Ian Imbert, Devki Sukhtankar, Bethany Remeniuk, Ian Pelletier, Jonathan Gentry, Alec Okun, Timothy Tiutan, Frank Porreca, Tamara King
Cancer-induced bone pain (CIBP) is characterized by moderate to severe ongoing pain that commonly requires the use of opiates. Even when ongoing pain is well controlled, patients can suffer breakthrough pain (BTP), episodic severe pain that "breaks through" the medication. We developed a novel model of cancer-induced BTP using female rats with mammary adenocarcinoma cells sealed within the tibia. We previously demonstrated that rats with bone cancer learn to prefer a context paired with saphenous nerve block to elicit pain relief (i...
April 24, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28428919/tibial-bone-grafting-for-wrist-reconstruction
#7
Schneider K Rancy, Stephanie D Malliaris, Scott W Wolfe
Background Iliac crest bone graft harvesting is routinely performed for upper extremity orthopedic procedures despite high complication rates associated with sensory nerve injury, hematoma, chronic pain, and fracture. Description of Technique Cancellous bone graft is harvested from the proximal tibia using a medial approach, minimizing donor site morbidity. Patients and Methods A retrospective review was undertaken of 14 patients who underwent cancellous proximal tibia bone graft harvesting to augment healing of wrist reconstruction, with 2 months minimum follow-up...
May 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28416686/ngf-trka-signaling-in-sensory-nerves-is-required-for-skeletal-adaptation-to-mechanical-loads-in-mice
#8
Ryan E Tomlinson, Zhi Li, Zhu Li, Liliana Minichiello, Ryan C Riddle, Arun Venkatesan, Thomas L Clemens
Sensory nerves emanating from the dorsal root extensively innervate the surfaces of mammalian bone, a privileged location for the regulation of biomechanical signaling. Here, we show that NGF-TrkA signaling in skeletal sensory nerves is an early response to mechanical loading of bone and is required to achieve maximal load-induced bone formation. First, the elimination of TrkA signaling in mice harboring mutant TrkA(F592A) alleles was found to greatly attenuate load-induced bone formation induced by axial forelimb compression...
May 2, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28413736/targeted-intraspinal-radiofrequency-ablation-for-lumbar-spinal-stenosis
#9
Robert E Jacobson, Michelle Granville, Jesse Hatgis DO
INTRODUCTION: By using a combination of magnetic resonance imaging (MRI) and computed tomography (CT) of the lumbar spine, it is possible to distinguish between spinal stenosis caused by bone compression and specific soft tissue epidural intraspinal lesions that cause localized spinal canal stenosis and neural compression. Examples include facet cysts and yellow ligament hypertrophy. Many of these patients are elderly with medical comorbidities that make open surgery problematic. MATERIALS & METHODS: This is a study of patients with predominantly soft tissue stenosis being treated with targeted intraspinal radiofrequency (RF) heat ablation...
March 10, 2017: Curēus
https://www.readbyqxmd.com/read/28409073/facial-paralysis-and-hearing-loss-a-rare-manifestation-of-prostate-cancer-metastases
#10
Uroosa Ibrahim, Amina Saqib, Farhan Mohammad, Muhammad R Raza, Nikhil Nalluri, Frank Forte
Dural prostate metastases (DPM) are a rare manifestation of metastatic prostate cancer seen in approximately one to six percent of cases. Presenting symptoms may include signs of elevated intracranial pressure, headache, altered mental status, or cranial nerve palsies. Hearing loss, sensory changes, dysarthria, and dysphagia are rare symptoms in DPM that were present in our patient. We present a case of a 58-year-old male with a known diagnosis of adenocarcinoma of the prostate presenting with symptoms of acute exacerbation of chronic obstructive pulmonary disease (COPD), sub-acute right-sided hearing loss, and right-sided facial paralysis...
March 3, 2017: Curēus
https://www.readbyqxmd.com/read/28404457/nerve-injury-during-anterior-cruciate-ligament-reconstruction-a-comparison-between-patellar-and-hamstring-tendon-grafts-harvest
#11
Barak Haviv, Shlomo Bronak, Ehud Rath, Mustafa Yassin
BACKGROUND: Tendon harvesting for anterior cruciate ligament reconstruction often injures sensory branches of the saphenous nerve. The reports on the prevalence of these injuries are scarce, while the implications on patient satisfaction are not known. Our objective was to compare the prevalence of sensory nerve injuries in patellar to hamstring autograft harvesting for anterior cruciate ligament reconstructions and follow up their postoperative course. METHODS: Between 2012 and 2014, patients who had a primary anterior cruciate ligament reconstruction with bone patellar tendon bone or hamstring autografts were included (n=94)...
April 9, 2017: Knee
https://www.readbyqxmd.com/read/28395984/efficacy-of-manual-therapy-including-neurodynamic-techniques-for-the-treatment-of-carpal-tunnel-syndrome-a-randomized-controlled-trial
#12
Tomasz Wolny, Edward Saulicz, Paweł Linek, Michael Shacklock, Andrzej Myśliwiec
OBJECTIVE: The purpose of this randomized trial was to compare the efficacy of manual therapy, including the use of neurodynamic techniques, with electrophysical modalities on patients with mild and moderate carpal tunnel syndrome (CTS). METHODS: The study included 140 CTS patients who were randomly assigned to the manual therapy (MT) group, which included the use of neurodynamic techniques, functional massage, and carpal bone mobilizations techniques, or to the electrophysical modalities (EM) group, which included laser and ultrasound therapy...
April 8, 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28364109/-role-of-substance-p-and-calcitonin-gene-related-peptide-in-bone-metabolism
#13
Shuanglei Wang, Jie Xiao, Zhanchun Li
Substance P (SP) and calcitonin gene-related peptide (CGRP) are the neuropeptides released from the sensory nerve endings. Neuropeptides play a role in bone and the relevant organs. It exerts functions in regulation of the bone metabolism, fracture healing and pain by a certain way. The biological properties and distributions of SP and CGRP are closely related to the pathogenesis and development of bone metabolism, fracture healing and pain.
March 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28316120/synergistic-effects-of-g-csf-and-bone-marrow-stromal-cells-on-nerve-regeneration-with-acellular-nerve-xenografts
#14
Hua Jia, Ying Wang, Tao Wang, Yi Dong, Wei-Li Li, Jun-Ping Li, Wen-Zhi Ma, Xiao-Jie Tong, Zhong-Yi He
Peripheral nerve defects result in severe denervation presenting sensory and motor functional incapacitation. Currently, a satisfactory therapeutic treatment promoting the repair of injured nerves is not available. As shown in our previous study, acellular nerve xenografts (ANX) implanted with bone marrow stromal cells (BMSCs) replaced allografts and promoted nerve regeneration. Additionally, granulocyte-colony stimulating factor (G-CSF) has been proven to mobilize supplemental cells and enhance vascularization in the niche...
March 18, 2017: Synapse
https://www.readbyqxmd.com/read/28295390/mechanically-sensitive-a%C3%AE-nociceptors-that-innervate-bone-marrow-respond-to-changes-in-intra-osseous-pressure
#15
Sara Nencini, Jason Ivanusic
KEY POINTS: Sensory neurons that innervate the bone marrow provide the CNS with information about pain associated with bone disease and pathology, but little is known of their function. Here we use a novel in vivo bone-nerve electrophysiological preparation to study how they respond to noxious mechanical stimulation delivered by increasing intra-osseous pressure. We provide evidence that sensory neurons that innervate the bone marrow respond to high threshold noxious mechanical stimulation, have response properties consistent with a role in nociception, provide information about different features of an intra-osseous pressure stimulus and express the Piezo2 mechano-transducer molecule...
March 15, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28266869/pig-induced-pluripotent-stem-cell-derived-neural-rosettes-parallel-human-differentiation-into-sensory-neural-subtypes
#16
Robin L Webb, Amalia Gallegos-Cárdenas, Colette N Miller, Nicholas J Solomotis, Hong-Xiang Liu, Franklin D West, Steven L Stice
The pig is the large animal model of choice for study of nerve regeneration and wound repair. Availability of porcine sensory neural cells would conceptually allow for analogous cell-based peripheral nerve regeneration in porcine injuries of similar severity and size to those found in humans. After recently reporting that porcine (or pig) induced pluripotent stem cells (piPSCs) differentiate into neural rosette (NR) structures similar to human NRs, here we demonstrate that pig NR cells could differentiate into neural crest cells and other peripheral nervous system-relevant cell types...
April 2017: Cellular Reprogramming
https://www.readbyqxmd.com/read/28254863/bone-pain-induced-by-multiple-myeloma-is-reduced-by-targeting-v-atpase-and-asic3
#17
Masahiro Hiasa, Tatsuo Okui, Yohance M Allette, Matthew S Ripsch, Ge-Hong Sun-Wada, Hiroki Wakabayashi, G David Roodman, Fletcher A White, Toshiyuki Yoneda
Multiple myeloma patients experience severe bone pain (MMBP) that is undertreated and poorly understood. In this study, we studied MMBP in an intratibial mouse xenograft model that employs JJN3 human multiple myeloma cells. In this model, mice develop MMBP associated in bone with increased sprouting of calcitonin gene-related peptide-positive (CGRP(+)) sensory nerves and in dorsal root ganglia (DRG) with upregulation of phosphorylated ERK1/2 (pERK1/2) and pCREB, two molecular indicators of neuron excitation...
March 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28203388/on-the-development-of-the-chondrocranium-and-the-histological-anatomy-of-the-head-in-perinatal-stages-of-marsupial-mammals
#18
REVIEW
Marcelo R Sánchez-Villagra, Analía M Forasiepi
An overview of the literature on the chondrocranium of marsupial mammals reveals a relative conservatism in shape and structures. We document the histological cranial anatomy of individuals representing Monodelphis domestica, Dromiciops gliroides, Perameles sp. and Macropus eugenii. The marsupial chondrocranium is generally characterized by the great breadth of the lamina basalis, absence of pila metoptica and large otic capsules. Its most anterior portion (cupula nasi anterior) is robust, and anterior to it there are well-developed tactile sensory structures, functionally important in the neonate...
2017: Zoological Letters
https://www.readbyqxmd.com/read/28194713/use-of-compressive-osseointegration-endoprostheses-for-massive-bone-loss-from-tumor-and-failed-arthroplasty-a-viable-option-in-the-upper-extremity
#19
Krista A Goulding, Adam Schwartz, Steven J Hattrup, R Lor Randall, Donald Lee, Damian M Rispoli, Daniel M Lerman, Christopher Beauchamp
BACKGROUND: Endoprostheses using principles of compressive osseointegration have shown good survivorship in several studies involving the lower extremity; however, no series to our knowledge have documented the use of this technology in the management of massive bone loss in the upper limb. QUESTIONS/PURPOSES: (1) What proportion of upper extremity implants using compressive osseointegration fixation principles achieved durable short-term fixation, and what were the modes of failure? (2) What surgical complications resulted from reconstruction using this technique? METHODS: A multiinstitutional retrospective review identified nine patients (five women; four men) who underwent 13 endoprosthetic replacements between 2003 and 2014 using compressive osseointegration (Compliant(®) Pre-stress Device [CPS]; Biomet Inc, Warsaw, IN, USA) in the upper extremity, including two proximal humeri, two humeral diaphyses, seven distal humeri, and two proximal ulna...
June 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28173896/effects-of-a-sensory-branch-to-the-posterior-external-ear-canal-coughing-pain-ramsay-hunt-s-syndrome-and-hitselberger-s-sign
#20
S Mulazimoglu, R Flury, S Kapila, T Linder
BACKGROUND: A distinct nerve innervating the external auditory canal can often be identified in close relation to the facial nerve when gradually thinning the posterior canal wall. This nerve has been attributed to coughing during cerumen removal, neuralgic pain, Hitselberger's sign and vesicular eruptions described in Ramsay Hunt's syndrome. This study aimed to demonstrate the origin and clinical impact of this nerve. METHODS AND RESULTS: In patients with intractable otalgia or severe coughing whilst inserting a hearing aid, who responded temporarily to local anaesthesia, the symptoms could be resolved by sectioning a sensory branch to the posterior canal...
April 2017: Journal of Laryngology and Otology
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