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https://www.readbyqxmd.com/read/28225915/exogenous-neuregulin-1-attenuates-stz-induced-diabetic-peripheral-neuropathic-pain-in-rats
#1
Fang Zhou, Zhongyuan Xia, Kang Liu, Qin Zhou
Purpose: To investigate whether modulating NRG1 could attenuate diabetic neuropathic pain and analyze the underlying mechanism. Methods: Male SD rats were randomly divided into control group, diabetic group, NRG1 intervention group. After STZ-induced 2 weeks, NRG1 intervention daily for consecutive 7 days. 4 weeks after NRG1 intervention, both the mechanical withdrawal threshold and the morphological changes of the dorsal root ganglion and sural nerve were observed...
January 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28225913/ultrasound-as-a-safe-and-reliable-guidance-for-subarachnoid-puncture-in-rabbits
#2
Ivan Dias Fernandes Pereira, Roberto Bezerra Vital, Ronaldo Silva, Felipe Gilberto Valerini, Vania Maria de Vasconcelos Machado, Mariangela Esrher Marques, Helio Miot, Lais Helena Navarro, Eliana Marisa Ganem
Purpose: To evaluate a model for studying the toxicity in nervous tissue and meninges using ultrasound to guide needle insertion into the subarachnoid space of rabbits, with the objective of avoiding injuries triggered by the puncture and by intraneural injection of solutions. Methods: Forty-five adult female rabbits were divided into 3 groups (G): G1 underwent subarachnoid puncture, G2 underwent subarachnoid injection of saline solution and G3 underwent subarachnoid injection of 0...
January 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28225868/n-acetylcysteine-downregulates-phosphorylated-p-38-expression-but-does-not-reverse-the-increased-superoxide-anion-levels-in-the-spinal-cord-of-rats-with-neuropathic-pain
#3
A Horst, J A de Souza, M C Q Santos, A P K Riffel, C Kolberg, M F M Ribeiro, L S de Fraga, W A Partata
We determined the effect of N-acetylcysteine (NAC) on the expression of the phosphorylated p38 (p-p38) protein and superoxide anion generation (SAG), two important players in the processing of neuropathic pain, in the lumbosacral spinal cord of rats with chronic constriction injury (CCI)-induced neuropathic pain. The sciatic functional index (SFI) was also measured to assess the functional recovery post-nerve lesion. Thirty-six male Wistar rats were divided equally into the following groups: Naive (rats did not undergo surgical manipulation); Sham (rats in which all surgical procedures involved in CCI were used except the ligature), and CCI (rats in which four ligatures were tied loosely around the right common sciatic nerve), which received 2, 4, or 8 intraperitoneal injections of NAC (150 mg·kg-1·day-1) or saline beginning 4 h after CCI...
February 16, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28225648/safety-of-autologous-human-schwann-cell-transplantation-in-subacute-thoracic-spinal-cord-injury
#4
Kimberly D Anderson, James Guest, W Dalton Dietrich, Mary B Bunge, Rosie Curiel, Marine Dididze, Barth A Green, Aisha Khan, Damien D Pearse, Efrat Saraf-Lavi, Eva Widerstrom-Noga, Pat Wood, Allan D Levi
The rationale for implantation of autologous human Schwann cells (SCs) in people with subacute spinal cord injury (SCI) is based on evidence that transplanted SCs are neuroprotective, support local axonal plasticity, and are capable of myelinating axons. A Phase I clinical trial was conducted to evaluate the safety of autologous human SC transplantation into the injury epicenter of six subjects with subacute SCI. The trial was an open-label, unblinded, non-randomized, non-placebo controlled study with a dose escalation design and standard medical rehabilitation...
February 18, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28224297/fracture-reduction-by-postoperative-mobilisation-for-the-treatment-of-hyperextension-injuries-of-the-thoracolumbar-spine-in-patients-with-ankylosing-spinal-disorders
#5
Richard A Lindtner, Christian Kammerlander, Michael Goetzen, Alexander Keiler, Davud Malekzadeh, Dietmar Krappinger, Rene Schmid
INTRODUCTION: The aim of this study was to evaluate results of surgical stabilisation of hyperextension injuries of the thoracolumbar spine in patients with ankylosing spinal disorders using two different treatment strategies: the conventional open rigid posterior instrumentation and percutaneous less rigid posterior instrumentation. Surgical and non-surgical complications, the postoperative radiological course, and clinical outcome at final follow-up were comparatively assessed. Moreover, we sought to discuss important biomechanical and surgical aspects specific to posterior instrumentation of the ankylosed thoracolumbar spine as well as to elaborate on the advantages and limitations of the proposed new treatment strategy involving percutaneous less rigid stabilisation and fracture reduction by postoperative mobilisation...
February 21, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28223516/targeting-human-mas-related-g-protein-coupled-receptor-x1-to-inhibit-persistent-pain
#6
Zhe Li, Pang-Yen Tseng, Vinod Tiwari, Qian Xu, Shao-Qiu He, Yan Wang, Qin Zheng, Liang Han, Zhiping Wu, Anna L Blobaum, Yiyuan Cui, Vineeta Tiwari, Shuohao Sun, Yingying Cheng, Julie H Y Huang-Lionnet, Yixun Geng, Bo Xiao, Junmin Peng, Corey Hopkins, Srinivasa N Raja, Yun Guan, Xinzhong Dong
Human Mas-related G protein-coupled receptor X1 (MRGPRX1) is a promising target for pain inhibition, mainly because of its restricted expression in nociceptors within the peripheral nervous system. However, constrained by species differences across Mrgprs, drug candidates that activate MRGPRX1 do not activate rodent receptors, leaving no responsive animal model to test the effect on pain in vivo. Here, we generated a transgenic mouse line in which we replaced mouse Mrgprs with human MrgprX1 This humanized mouse allowed us to characterize an agonist [bovine adrenal medulla 8-22 (BAM8-22)] and a positive allosteric modulator (PAM), ML382, of MRGPRX1...
February 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28223104/gastric-heterotopia-in-the-rectum-a-rare-cause-of-ectopic-gastric-tissue
#7
George A Salem, Javid Fazili, Tauseef Ali
Gastric heterotopia refers to the discovery of normal gastric tissue at foreign, unexpected sites. It has been described anywhere in the alimentary tract, even in the mediastinum, scrotum, and spinal cord. It is not uncommonly seen in the oesophagus or small intestine. However, large bowel lesions are rare, with the most common location of colonic lesions is the rectum. Although it is a rare entity, it may be the source for significant problems such as rectal bleeding, abdominal pain, deep rectal pain, and malignancy...
February 17, 2017: Arab Journal of Gastroenterology: the Official Publication of the Pan-Arab Association of Gastroenterology
https://www.readbyqxmd.com/read/28222697/magnesium-sulphate-attenuate-remifentanil-induced-postoperative-hyperalgesia-via-regulating-tyrosine-phosphorylation-of-the-nr2b-subunit-of-the-nmda-receptor-in-the-spinal-cord
#8
Jiehao Sun, Hai Lin, Guodong He, Wendong Lin, Jianping Yang
BACKGROUND: Remifentanil induced hyperalgesia (RIH) is characterized by stimulation evoked pain including allodynia and thermal hyperalgesia after remifentanil infusion. N-methyl-D-aspartate (NMDA) receptor was reported to be involved in the progress of RIH. We hypothesized that intrathecal MgSO4 could relieve hyperalgesia after remifentanil infusion via regulating phosphorylation of NMDA receptor NR2B subunit activity in this study. METHODS: Thirty two rats were randomly allocated into control group, model of RIH group, RIH plus 100ug MgSO4 group, RIH plus 300ug MgSO4 group...
February 21, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28222382/corporeal-illusions-in-chronic-spinal-cord-injuries
#9
Michele Scandola, Salvatore Maria Aglioti, Renato Avesani, Gianettore Bertagnoni, Anna Marangoni, Valentina Moro
While several studies have investigated corporeal illusions in patients who have suffered from a stroke or undergone an amputation, only anecdotal or single case reports have explored this phenomenon after spinal cord injury. Here we examine various different types of bodily misperceptions in a comparatively large group of 49 people with spinal cord injury in the post-acute and chronic phases after the traumatic lesion onset. An extensive battery of questionnaires concerning a variety of body related feelings was administered and the results were correlated to the main clinical variables...
February 17, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28220804/impact-of-symptomatic-skeletal-events-on-health-care-resource-utilization-and-quality-of-life-among-patients-with-castration-resistant-prostate-cancer-and-bone-metastases
#10
R McKay, B Haider, M S Duh, A Valderrama, M Nakabayashi, M Fiorillo, L Ristovska, L Wen, P Kantoff
BACKGROUND: Data regarding the impact of symptomatic skeletal events (SSEs) on health economics and patient-reported outcomes in men with castration-resistant prostate cancer (CRPC) and bone metastases from a clinical setting are lacking. Hence, this study aimed to quantify the effects of SSEs on health-care resource utilization (HRU), health-related quality of life (HRQoL) and pain in men with CRPC metastasized to bone. METHODS: This cohort study included men with CRPC and bone metastasis treated at a tertiary center during December 1996-July 2015...
February 21, 2017: Prostate Cancer and Prostatic Diseases
https://www.readbyqxmd.com/read/28220638/a-novel-clinical-framework-the-use-of-dispositions-in-clinical-practice-a-person-centred-approach
#11
Matthew Low
This paper explores a novel clinical framework that is underpinned by a specific philosophical perspective of causation and its utility in clinical practice. A dispositional theory of causation may overcome challenges that clinicians face in complex clinical presentations including those that are medically unexplained. Dispositionalism identifies causes not as regular events necessitating an effect but rather phenomena, which are highly complex, context-sensitive, and which tend toward an effect. Diagnostic uncertainty and causal explanation are significant challenges in terms of clinical reasoning, communication, and the overall therapeutic outcome...
February 21, 2017: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/28220607/neurological-and-spinal-manifestations-of-the-ehlers-danlos-syndromes
#12
Fraser C Henderson, Claudiu Austin, Edward Benzel, Paolo Bolognese, Richard Ellenbogen, Clair A Francomano, Candace Ireton, Petra Klinge, Myles Koby, Donlin Long, Sunil Patel, Eric L Singman, Nicol C Voermans
The Ehlers-Danlos syndromes (EDS) are a heterogeneous group of heritable connective tissue disorders characterized by joint hypermobility, skin extensibility, and tissue fragility. This communication briefly reports upon the neurological manifestations that arise including the weakness of the ligaments of the craniocervical junction and spine, early disc degeneration, and the weakness of the epineurium and perineurium surrounding peripheral nerves. Entrapment, deformation, and biophysical deformative stresses exerted upon the nervous system may alter gene expression, neuronal function and phenotypic expression...
February 21, 2017: American Journal of Medical Genetics. Part C, Seminars in Medical Genetics
https://www.readbyqxmd.com/read/28219816/the-trepp-as-alternative-technique-for-recurrent-inguinal-hernia-after-lichtenstein-s-repair
#13
W J V Willem Bökkerink, A M Alexandra Persoon, W L Willem Akkersdijk, C J H M Kees van Laarhoven, G G Giel Koning
BACKGROUND: Recurrent inguinal hernias after initial repair with mesh are preferably treated via an alternative route (e.g. posterior after anterior). For recurrent inguinal hernias after an anterior repair such as Lichtenstein's, an endoscopic approach such as the total extraperitoneal or transabdominal preperitoneal technique (TEP or TAPP) is recommended if expertise is present. The TransREctus sheath PrePeritoneal (TREPP) technique is a promising open posterior technique and could be an alternative to endoscopic methods...
February 17, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28219639/leishmania-l-amazonensis-induces-hyperalgesia-in-balb-c-mice-contribution-of-endogenous-spinal-cord-tnf%C3%AE-and-nf%C3%AE%C2%BAb-activation
#14
Sergio M Borghi, Victor Fattori, Kenji W Ruiz-Miyazawa, Milena M Miranda-Sapla, Rúbia Casagrande, Phileno Pinge-Filho, Wander R Pavanelli, Waldiceu A Verri
: Cutaneous leishmaniasis (CL) is the most common form of the leishmaniasis in humans. Ulcerative painless skin lesions are predominant clinical features of CL. Wider data indicate pain accompanies human leishmaniasis, out with areas of painless ulcerative lesions per se. In rodents, Leishmania (L.) major infection induces nociceptive behaviors that correlate with peripheral cytokine levels. However, the role of the spinal cord in pain processing after Leishmania infection has not been investigated...
February 17, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28219304/solitary-thoracic-intramedullary-spinal-neurofibroma-microsurgically-extirpated-via-recapping-t-saw-laminoplasty
#15
Mamer Soriano Rosario, Hideki Murakami, Satoshi Kato, Moriyuki Fujii, Noritaka Yonezawa, Hiroyuki Tsuchiya
We report the case of a 40-year-old female presenting with back pain that was complicated by a solitary intramedullary spinal cord mass at the T10-11 levels, confirmed by magnetic resonance imaging and computed tomography myelography. Microsurgical en bloc extirpation of the tumor approached through a recapping T-saw laminoplasty of T10 was done, and histopathology findings revealed a diagnosis of neurofibroma. Solitary spinal neurofibroma is one of the rarest tumors involving the spinal cord and is very adherent for the lack of a well-defined capsule, requiring careful dissection under microscope magnification for successful en bloc resection...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28217686/pregnancy-related-osteoporosis-and-spinal-fractures
#16
Ka Yeong Yun, Si Eun Han, Seung Chul Kim, Jong Kil Joo, Kyu Sup Lee
Pregnancy-related osteoporosis is a very rare condition characterized by the occurrence of fracture during pregnancy or the puerperium. Despite its relative rarity, it can be a dangerous condition that causes severe back pain, height loss and disability. Normal physiologic changes during pregnancy, genetic or racial difference, obstetrical history and obstetrical disease, such as preterm labor or pregnancy-induced hypertension, are presumed risk factors of pregnancy-related osteooporosis. However, exact etiology and pathogenesis are uncertain...
January 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28217392/bariatric-bypasses-contribute-to-loss-of-bone-mineral-density-but-reduce-axial-back-pain-in-morbidly-obese-patients-considering-spine-surgery
#17
EDITORIAL
Nancy E Epstein
BACKGROUND: Many spine surgeons recommend stringent weight loss, including bariatric bypass procedures, prior to "elective" spine surgery (should not be for axial back pain alone) in morbidly obese patients (defined by a body mass index (BMI) of >40 mg/kg(2) or >35 mg/kg(2) with two or more major comorbidities) to reduce their greater risk for major perioperative complications. Although bypasses typically lead to marked weight reduction and even reduced axial back pain, they also promote unrecognized and often insufficiently treated vitamin D deficiency and loss of bone mineral density...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28217388/neurosurgery-concepts-key-perspectives-on-imaging-characteristics-of-spinal-metastases-surgery-for-low-back-pain-anesthesia-for-disc-surgery-and-laminectomy-versus-laminectomy-and-fusion-for-lumbar-spondylolisthesis
#18
Carlito Lagman, Lawrance K Chung, Luke Macyszyn, Winward Choy, Zachary A Smith, Nader S Dahdaleh, Angela M Bohnen, Jin M Cho, Chaim B Colen, Edward Duckworth, Anand V Germanwala, Peter Kan, Alexander A Khalessi, Chae-Yong Kim, Sandi Lam, Gordon Li, Michael Lim, Jonathan H Sherman, Vincent Y Wang, Gabriel Zada, Isaac Yang
No abstract text is available yet for this article.
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28216750/early-results-of-thoraco-lumbar-burst-fracture-treatment-using-selective-corpectomy-and-rectangular-cage-reconstruction
#19
Bowei Liang, Guofeng Huang, Luobing Ding, Liangqi Kang, Mo Sha, Zhenqi Ding
BACKGROUND: Subsidence and late fusion are commonly observed in anterior subtotal corpectomy and reconstruction for treating thoracolumbar burst fractures. The subsidence rate of this surgical method was reported from 19.6% to 75% in the literatures, which would cause treatment failure. Thus, an improvement of anterior surgery technique should be studied to reduce these complications. MATERIALS AND METHODS: 130 patients of thoracolumbar burst fractures treated by minimal corpectomy, decompression and U cage, between January 2009 and December 2010 were included in this study...
January 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28216208/a-rare-case-of-pediatric-lumbar-spinal-ependymoma-mimicking-meningitis
#20
Ezeali Mike Ekuma, Kiyoshi Ito, Akihiro Chiba, Yosuke Hara, Kohei Kanaya, Tetsuyoshi Horiuchi, Samuel Ohaegbulam, Kazuhiro Hongo
Spontaneous acute subarachnoid hemorrhage (SAH) from lumbar ependymoma in children is rare. We report a case of a14-year-old boy who developed sudden radicular low back pain while playing baseball. He was initially managed conservatively in a local hospital for suspected lumbar disc herniation, but later developed meningeal symptoms and fever before being referred to our hospital. There he underwent a diagnostic lumbar puncture in the emergency room; his cerebrospinal fluid suggested an SAH. Physical examination showed meningeal signs and cauda equina features...
February 12, 2017: World Neurosurgery
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