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https://www.readbyqxmd.com/read/29305237/isolation-of-satellite-glial-cells-for-high-quality-rna-purification
#1
Sara Buskbjerg Jager, Lone Tjener Pallesen, Christian Bjerggaard Vaegter
BACKGROUND: Satellite glial cells (SGCs) envelope the neuronal somas in the dorsal root ganglia (DRG) and are believed to provide important neuronal support. Animal models of peripheral nerve injury, diabetes or chemotherapy all demonstrate activation of SGCs, suggesting important physiological roles for SGCs in various states of peripheral neuropathy. However, the biology of these glial cells is only poorly characterized under normal as well as pathological conditions due to suboptimal isolation methods...
January 2, 2018: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29298725/sex-differences-in-primary-muscle-afferent-sensitization-following-ischemia-and-reperfusion-injury
#2
Jessica L Ross, Luis F Queme, Jordan E Lamb, Kathryn J Green, Michael P Jankowski
BACKGROUND: Chronic pain conditions are more prevalent in women, but most preclinical studies into mechanisms of pain generation are performed using male animals. Furthermore, whereas group III and IV nociceptive muscle afferents provoke central sensitization more effectively than their cutaneous counterparts, less is known about this critical population of muscle nociceptors. Here, we compare the physiology of individual muscle afferents in uninjured males and females. We then characterize the molecular, physiological, and behavioral effects of transient ischemia and reperfusion injury (I/R), a model we have extensively studied in males and in females...
January 3, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29286468/analysis-of-immune-cells-in-single-sciatic-nerves-and-dorsal-root-ganglion-from-a-single-mouse-using-flow-cytometry
#3
Asa S Hidmark, Peter P Nawroth, Thomas Fleming
Nerve-resident immune cells in the peripheral nervous system (PNS) are essential to maintaining neuronal integrity in a healthy nerve. The immune cells of the PNS are affected by injury and disease, affecting the nerve function and the capacity for regeneration. Neuronal immune cells are commonly analyzed by immunofluorescence (IF). While IF is essential for determining the location of the immune cells in the nerve, IF is only semi-quantitative and the method is limited to the number of markers that can be analyzed simultaneously and the degree of surface expression...
December 6, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29274916/healthcare-reforms-in-cyprus-2013-2017-does-the-crisis-mark-the-end-of-the-healthcare-sector-as-we-know-it
#4
Panagiotis Petrou, Sotiris Vandoros
As part of a bailout agreement with the International Monetary Fund, the European Commission and the European Central Bank (known as the Troika), Cyprus had to achieve a fiscal surplus through budget constraints and efficiency enhancement. As a result, a number of policy changes were implemented, including a reform of the healthcare sector, and major healthcare reforms are planned for the upcoming years, mainly via the introduction of a National Health System. This paper presents the healthcare sector, provides an overview of recent reforms, assesses the recently implemented policies and proposes further interventions...
November 11, 2017: Health Policy
https://www.readbyqxmd.com/read/29273003/an-integrated-and-comparative-approach-towards-identification-characterization-and-functional-annotation-of-candidate-genes-for-drought-tolerance-in-sorghum-sorghum-bicolor-l-moench
#5
Adugna Abdi Woldesemayat, Peter Van Heusden, Bongani K Ndimba, Alan Christoffels
BACKGROUND: Drought is the most disastrous abiotic stress that severely affects agricultural productivity worldwide. Understanding the biological basis of drought-regulated traits, requires identification and an in-depth characterization of genetic determinants using model organisms and high-throughput technologies. However, studies on drought tolerance have generally been limited to traditional candidate gene approach that targets only a single gene in a pathway that is related to a trait...
December 22, 2017: BMC Genetics
https://www.readbyqxmd.com/read/29246132/neuroprotective-effects-of-hyperbaric-oxygen-hbo-therapy-on-neuronal-death-induced-by-sciatic-nerve-transection-in-rat
#6
Zahra Shams, Ali Reza Khalatbary, Hassan Ahmadvand, Zohreh Zare, Kosar Kian
BACKGROUND: Recent studies shows that hyperbaric oxygen (HBO) therapy exerts some protective effects against neural injuries. The purpose of this study was to determine the neuroprotective effects of HBO following sciatic nerve transection (SNT). METHODS: Rats were randomly divided into five groups (n = 14 per group): Sham-operated (SH) group, SH + HBO group, SNT group, and SNT + pre- and SNT + post-HBO groups (100% oxygen at 2.0 atm absolute, 60 min/day for five consecutive days beginning on 1 day before and immediately after nerve transaction, respectively)...
December 16, 2017: BMC Neurology
https://www.readbyqxmd.com/read/29224922/neurons-and-satellite-glial-cells-in-adult-rat-lumbar-dorsal-root-ganglia-express-connexin-36
#7
E Martha Pérez Armendariz, Monica Norcini, Beatriz Hernández-Tellez, Andrés Castell-Rodríguez, Cristina Coronel-Cruz, Raquel Guerrero Alquicira, Alexandra Sideris, Esperanza Recio-Pinto
Previous studies have shown that following peripheral nerve injury there was a downregulation of the gap junction protein connexin 36 (Cx36) in the spinal cord; however, it is not known whether Cx36 protein is expressed in the dorsal root ganglia (DRGs), nor if its levels are altered following peripheral nerve injuries. Here we address these aspects in the adult rat lumbar DRG. Cx36 mRNA was detected using qRT-PCR, and Cx36 protein was identified in DRG sections using immunohistochemistry (IHC) and immunofluorescence (IF)...
December 7, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/29219799/-characteristics-and-healthcare-utilization-of-patients-with-highest-costs-of-care
#8
J J G Wammes, M Tanke, W Jonkers, G P Westert, P J van der Wees, P P T Jeurissen
OBJECTIVE: To determine characteristics and healthcare utilization of high-cost patients in the Netherlands. DESIGN: Cross-sectional study, using claim data for 2013 from one Dutch health insurer. Analyses were limited to the curative health system (care that falls under the Health Insurance Act), including voluntary supplementary insurance. METHOD: We established total healthcare costs per beneficiary by summing all claims with a starting date in 2013...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29215540/the-insulin-receptor-is-colocalized-with-the-trpv1-nociceptive-ion-channel-and-neuropeptides-in-pancreatic-spinal-and-vagal-primary-sensory-neurons
#9
Bence András Lázár, Gábor Jancsó, Orsolya Oszlács, István Nagy, Péter Sántha
OBJECTIVES: Recent observations demonstrated the expression of the insulin receptor (InsR) and its functional interaction with the transient receptor potential vanilloid type 1 receptor (TRPV1) in sensory ganglion neurons. Because sensory nerves are implicated in pancreatic inflammatory processes, we studied the colocalization of the InsR with TRPV1 and proinflammatory neuropeptides in spinal and vagal pancreatic afferent neurons. METHODS: Immunohistochemistry and quantitative morphometry were used to analyze the expression of TRPV1, InsR, substance P (SP), and calcitonin gene-related peptide (CGRP) in retrogradely labeled pancreatic dorsal root ganglion (DRG) and nodose ganglion (NG) neurons...
January 2018: Pancreas
https://www.readbyqxmd.com/read/29200998/attenuation-of-the-infiltration-of-angiotensin-ii-expressing-cd3-t-cells-and-the-modulation-of-nerve-growth-factor-in-lumbar-dorsal-root-ganglia-a-possible-mechanism-underpinning-analgesia-produced-by-ema300-an-angiotensin-ii-type-2-at2-receptor-antagonist
#10
Nemat Khan, Arjun Muralidharan, Maree T Smith
Recent preclinical and proof-of-concept clinical studies have shown promising analgesic efficacy of selective small molecule angiotensin II type 2 (AT2) receptor antagonists in the alleviation of peripheral neuropathic pain. However, their cellular and molecular mechanism of action requires further investigation. To address this issue, groups of adult male Sprague-Dawley rats with fully developed unilateral hindpaw hypersensitivity, following chronic constriction injury (CCI) of the sciatic nerve, received a single intraperitoneal bolus dose of the small molecule AT2 receptor antagonist, EMA300 (10 mg kg-1), or vehicle...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29191102/impact-of-case-type-length-of-stay-institution-type-and-comorbidities-on-medicare-diagnosis-related-group-reimbursement-for-adult-spinal-deformity-surgery
#11
Pierce D Nunley, Gregory M Mundis, Richard G Fessler, Paul Park, Joseph M Zavatsky, Juan S Uribe, Robert K Eastlack, Dean Chou, Michael Y Wang, Neel Anand, Kelly A Frank, Marcus B Stone, Adam S Kanter, Christopher I Shaffrey, Praveen V Mummaneni
OBJECTIVE The aim of this study was to educate medical professionals about potential financial impacts of improper diagnosis-related group (DRG) coding in adult spinal deformity (ASD) surgery. METHODS Medicare's Inpatient Prospective Payment System PC Pricer database was used to collect 2015 reimbursement data for ASD procedures from 12 hospitals. Case type, hospital type/location, number of operative levels, proper coding, length of stay, and complications/comorbidities (CCs) were analyzed for effects on reimbursement...
December 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/29183014/mechanosensitivity-of-embryonic-neurites-promotes-their-directional-extension-and-schwann-cells-progenitors-migration
#12
Gonzalo Rosso, Peter Young, Victor Shahin
BACKGROUND/AIMS: Migration of Schwann cells (SCs) progenitors and neurite outgrowth from embryonic dorsal root ganglions (DRGs) are two central events during the development of the peripheral nervous system (PNS). How these two enthralling events preceding myelination are promoted is of great relevance from basic research and clinical aspects alike. Recent evidence demonstrates that biophysical cues (extracellular matrix stiffness) and biochemical signaling act in concert to regulate PNS myelination...
November 29, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29180893/identification-of-key-genes-and-pathways-associated-with-neuropathic-pain-in-uninjured-dorsal-root-ganglion-by-using-bioinformatic-analysis
#13
Chao-Jin Chen, De-Zhao Liu, Wei-Feng Yao, Yu Gu, Fei Huang, Zi-Qing Hei, Xiang Li
Purpose: Neuropathic pain is a complex chronic condition occurring post-nervous system damage. The transcriptional reprogramming of injured dorsal root ganglia (DRGs) drives neuropathic pain. However, few comparative analyses using high-throughput platforms have investigated uninjured DRG in neuropathic pain, and potential interactions among differentially expressed genes (DEGs) and pathways were not taken into consideration. The aim of this study was to identify changes in genes and pathways associated with neuropathic pain in uninjured L4 DRG after L5 spinal nerve ligation (SNL) by using bioinformatic analysis...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/29178500/identifying-unique-subtypes-of-spinal-afferent-nerve-endings-within-the-urinary-bladder-of-mice
#14
Nick J Spencer, Sarah Greenheigh, Melinda Kyloh, Tim J Hibberd, Harman Sharma, Luke Grundy, Stuart M Brierley, Andrea M Harrington, Elizabeth A Beckett, Simon J Brookes, Vladimir P Zagorodnyuk
Spinal afferent neurons are responsible for the transduction and transmission of noxious (painful) stimuli and innocuous stimuli that do not reach conscious sensations from visceral organs to the central nervous system. Although the location of the nerve cell bodies of spinal afferents is well known to reside in dorsal root ganglia (DRG), the morphology and location of peripheral nerve endings of spinal afferents that transduce sensory stimuli into action potentials is poorly understood. The individual nerve endings of spinal afferents that innervate the urinary bladder have never been unequivocally identified in any species...
November 27, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/29169841/distribution-and-neurochemistry-of-porcine-urinary-bladder-projecting-sensory-neurons-in-subdomains-of-the-dorsal-root-ganglia-a-quantitative-analysis
#15
Anna Kozłowska, Anita Mikołajczyk, Mariusz Majewski
The aim of the present study has been to verify the inter- and intraganglionic distribution pattern of porcine urinary bladder-projecting (UBP) neurons localized in the sacral dorsal root ganglia (DRGs). The morphology and chemical phenotype of these cells have also been investigated. These neurons were visualized using the fluorescent tracer Fast Blue (FB) which was injected bilaterally into the urinary bladder wall of five juvenile female pigs. The intraganglionic distribution showed that small- and medium-sized FB+ perikarya were mainly located in the central (S3-S4) and periphero-central (S2) region of the ganglia, while large cells were heterogeneously distributed...
November 20, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29158916/the-involvement-of-%C3%AE-catenin-cox-2-vegf-axis-in-nmda-caused-retinopathy
#16
Dan Ning, Wei Kevin Zhang, Han Tian, Xiao-Jun Li, Min Liu, Yu-Sang Li, He-Bin Tang
NMDA, a molecule that is capable of producing the loss of retinal ganglia cells (RGCs), has been widely studied; however, the detailed mechanism is not yet clarified. Previously, Wnt/β-catenin signaling has been suggested to be involved in the NMDA-induced retinopathy. In addition, previous investigations in our group demonstrated the presence of a Wnt/β-catenin/COX-2 axis in dorsal root ganglions (DRGs). Therefore, here in this paper, we tested whether there is an association of such axis with NMDA-induced RGC loss...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29152818/electrical-stimulation-of-dorsal-root-ganglion-in-the-context-of-pain-a-systematic-review-of-in-vitro-and-in-vivo-animal-model-studies
#17
REVIEW
Ivana Vuka, Katarina Vučić, Tihana Repić, Lejla Ferhatović Hamzić, Damir Sapunar, Livia Puljak
OBJECTIVE: Dorsal root ganglion (DRG) has recently emerged as an attractive target for neuromodulation therapy since primary sensory neurons and their soma in DRGs are important sites for pathophysiologic changes that lead to neuropathic pain. Our aim was to create evidence synthesis about the effects of electrical stimulation of DRG in the context of pain from in vitro and in vivo animal models, analyze methodology and quality of studies in the field. METHODS: For conducting systematic review we searched three data bases: MEDLINE, Embase and Web of Science...
November 20, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/29131488/dorsal-root-ganglion-stimulation-used-for-the-treatment-of-chronic-neuropathic-pain-in-the-groin-a-single-center-study-with-long-term-prospective-results-in-34-cases
#18
Matthias Hubert Morgalla, Anil Bolat, Marcos Fortunato, Guilherme Lepski, Bankim Subhash Chander
OBJECTIVE: Chronic neuropathic pain in the groin is a severe condition and difficult to treat. Dorsal root ganglion stimulation (DRGS) covers discrete painful areas precisely with its stimulation power in comparison to spinal cord stimulation (SCS). It was our hypothesis that DRGS provides a long-term relief of chronic groin pain over a period of more than three years. MATERIALS AND METHODS: Patients (age >18 years) with chronic neuropathic groin pain were prospectively examined...
December 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/29121912/the-exploration-of-medical-resources-utilization-among-inguinal-hernia-repair-in-taiwan-diagnosis-related-groups
#19
Yu-Hua Yan, Chih-Ming Kung, Yi Chen
BACKGROUND: This study centered on differences in medical costs, using the Taiwan diagnosis-related groups (Tw-DRGs) on medical resource utilization in inguinal hernia repair (IHR) in hospitals with different ownership to provide suitable reference information for hospital administrators. METHODS: The 2010-2011 data for three hospitals under different ownership were extracted from the Taiwan National Health Insurance claims database. A retrospective method was applied to analyze the age, sex, length of stay, diagnosis and surgical procedure code, and the change in financial risk of medical costs in IHR cases after introduction of Tw-DRGs...
November 9, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/29115943/membrane-protein-nav1-7-contributes-to-the-persistent-post-surgical-pain-regulated-by-p-p65-in-dorsal-root-ganglion-drg-of-smir-rats-model
#20
Zhisong Li, Yaru Li, Jing Cao, Xuemin Han, Weihua Cai, Weidong Zang, Jitian Xu, Wei Zhang
BACKGROUND: Persistent post-surgical pain is a difficult clinical problem. In this study, we intend to explore the mechanism underlying the persistent post-surgical pain in SMIR (skin/muscle incision and retraction) rats. METHODS: First of all, the expression of membrane protein Nav1.7 and p-p65 (Phosphorylation of p65) were detected in ipsilateral L4-6 DRGs of SMIR rats by western-blot and immunostaining. Then with ProTx-II (Nav1.7 blocker) or PDTC (p65 inhibitor) were intrathecally injected while the change of Nav1...
November 7, 2017: BMC Anesthesiology
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