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Neuropathy investigation

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https://www.readbyqxmd.com/read/28212408/prevalence-and-associated-comorbidities-of-restless-legs-syndrome-rls-data-from-a-large-population-based-door-to-door-survey-on-19176-adults-in-tehran-iran
#1
Seyed-Mohammad Fereshtehnejad, Arash Rahmani, Mahdiyeh Shafieesabet, Mahshid Soori, Ahmad Delbari, Mohammad Reza Motamed, Johan Lökk
BACKGROUND: Discrepancies have been reported in the prevalence rate of restless legs syndrome (RLS) among different ethnic groups and geographic populations. Furthermore, there are disagreements on determinant factors and associated comorbidities of RLS. We aimed to estimate prevalence of RLS and investigate its associated comorbid conditions and risk factors in a large population-based door-to-door survey. METHODS: Following a multistage random sampling from the households lived in 22 urban districts of Tehran, Iran, 19176 participants with ≥30 years of age were recruited...
2017: PloS One
https://www.readbyqxmd.com/read/28209600/cell-therapy-for-gi-motility-disorders-comparison-of-cell-sources-and-proposed-steps-for-treating-hirschsprung-disease
#2
Lincon A Stamp
Cell therapeutic approaches to treat a range of congenital and degenerative neuropathies are under intense investigation. There have been recent significant advancements in the development of cell therapy to treat disorders of the enteric nervous system, enteric neuropathies. These advances include the efficient generation of enteric neural progenitors from pluripotent stem cells and the rescue of a Hirschsprung Disease model mouse following their transplantation into the bowel. Further, a recent study provides evidence of functional innervation of the bowel muscle by neurons derived from transplanted ENS-derived neural progenitors...
February 16, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28208696/valproate-attenuates-endoplasmic-reticulum-stress-induced-apoptosis-in-sh-sy5y-cells-via-the-akt-gsk3%C3%AE-signaling-pathway
#3
Zhengmao Li, Fenzan Wu, Xie Zhang, Yi Chai, Daqing Chen, Yuetao Yang, Kebin Xu, Jiayu Yin, Rui Li, Hongxue Shi, Zhouguang Wang, Xiaokun Li, Jian Xiao, Hongyu Zhang
Endoplasmic reticulum (ER) stress-induced apoptosis plays an important role in a range of neurological disorders, such as neurodegenerative diseases, spinal cord injury, and diabetic neuropathy. Valproate (VPA), a typical antiepileptic drug, is commonly used in the treatment of bipolar disorder and epilepsy. Recently, VPA has been reported to exert neurotrophic effects and promote neurite outgrowth, but its molecular mechanism is still unclear. In the present study, we investigated whether VPA inhibited ER stress and promoted neuroprotection and neuronal restoration in SH-SY5Y cells and in primary rat cortical neurons, respectively, upon exposure to thapsigargin (TG)...
February 8, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28206686/nte-pnpla6-is-expressed-in-mature-schwann-cells-and-is-required-for-glial-ensheathment-of-remak-fibers
#4
Janis McFerrin, Bruce L Patton, Elizabeth R Sunderhaus, Doris Kretzschmar
Neuropathy target esterase (NTE) or patatin-like phospholipase domain containing 6 (PNPLA6) was first linked with a neuropathy occurring after organophosphate poisoning and was later also found to cause complex syndromes when mutated, which can include mental retardation, spastic paraplegia, ataxia, and blindness. NTE/PNPLA6 is widely expressed in neurons but experiments with its Drosophila orthologue Swiss-cheese (SWS) suggested that it may also have glial functions. Investigating whether NTE/PNPLA6 is expressed in glia, we found that NTE/PNPLA6 is expressed by Schwann cells in the sciatic nerve of adult mice with the most prominent expression in nonmyelinating Schwann cells...
February 16, 2017: Glia
https://www.readbyqxmd.com/read/28202580/spinal-disinhibition-in-experimental-and-clinical-painful-diabetic-neuropathy
#5
Andrew G Marshall, Corinne Lee-Kubli, Shazli Azmi, Michael Zhang, Maryam Ferdousi, Teresa Mixcoatl-Zecuatl, Ioannis N Petropoulos, Georgios Ponirakis, Mark S Fineman, Hassan Fadavi, Katie Frizzi, Mitra Tavakoli, Maria Jeziorska, Corinne G Jolivalt, Andrew J M Boulton, Nathan Efron, Nigel A Calcutt, Rayaz A Malik
Impaired rate dependent depression (RDD) of the Hoffman-reflex is associated with reduced dorsal spinal cord potassium chloride co-transporter expression and impaired spinal GABAA receptor function, indicative of spinal inhibitory dysfunction. We have investigated the pathogenesis of impaired RDD in diabetic rodents exhibiting features of painful neuropathy and the translational potential of this marker of spinal inhibitory dysfunction in human painful diabetic neuropathy. Impaired RDD and allodynia were present in type 1 and type 2 diabetic rats but not in rats with type 1 diabetes receiving insulin supplementation that did not restore normoglycemia...
February 15, 2017: Diabetes
https://www.readbyqxmd.com/read/28202549/relationships-between-type-2-diabetes-neuropathy-and-microvascular-dysfunction-evidence-from-patients-with-cryptogenic-axonal-polyneuropathy
#6
Anna L Emanuel, Mariska D Nieuwenhoff, Erica S Klaassen, Ajay Verma, Mark H H Kramer, Rob Strijers, Alexander F J E Vrancken, Etto Eringa, Geert Jan Groeneveld, Erik H Serné
OBJECTIVE: This study investigated whether the relationship between neuropathy and microvascular dysfunction in patients with type 2 diabetes is independent of diabetes-related factors. For this purpose, we compared skin microvascular function in patients with type 2 diabetes with that of patients with cryptogenic axonal polyneuropathy (CAP), a polyneuropathy of unknown etiology. RESEARCH DESIGN AND METHODS: Cross-sectional information was collected from 16 healthy controls (HCs), 16 patients with CAP, 15 patients with type 2 diabetes with polyneuropathy (DPN), and 11 patients with type 2 diabetes without polyneuropathy...
February 15, 2017: Diabetes Care
https://www.readbyqxmd.com/read/28202017/association-between-metformin-use-and-below-the-knee-arterial-calcification-score-in-type-2-diabetic-patients
#7
Aurélien Mary, Agnes Hartemann, Sophie Liabeuf, Carole Elodie Aubert, Salim Kemel, Joe Elie Salem, Philippe Cluzel, Aurélie Lenglet, Ziad A Massy, Jean-Daniel Lalau, Romuald Mentaverri, Olivier Bourron, Saïd Kamel
BACKGROUND: Vascular calcification (VC) is common in type 2 diabetes, and is associated with cardiovascular complications. Recent preclinical data suggest that metformin inhibits VC both in vitro and in animal models. However, metformin's effects in patients with diabetic VC have not previously been characterized. The present study investigated the association between metformin use and lower-limb arterial calcification in patients with type 2 diabetes and high cardiovascular risk. METHODS: The DIACART cross-sectional cohort study included 198 patients with type 2 diabetes but without severe chronic kidney disease...
February 15, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28190463/prophylactic-topical-paeoniflorin-prevents-mechanical-allodynia-caused-by-paclitaxel-in-mice-through-adenosine-a1-receptors
#8
Tsugunobu Andoh, Nao Kobayashi, Daisuke Uta, Yasushi Kuraishi
BACKGROUND: The chemotherapeutic agent paclitaxel (PTX) causes refractory peripheral neuropathy as a side effect. Prophylactic oral administration of the traditional herbal medicine Shakuyakukanzoto containing Paeoniae Radix and Glycyrrhizae Radix prevents the development of PTX-induced mechanical allodynia in mice via peripheral effects, mostly due to Paeoniae Radix. However, the bioactive component responsible for the prevention of PTX-induced neuropathic pain remains unknown. PURPOSE: To determine whether a monoterpene glycoside paeoniflorin (PF), which is the principal bioactive constituent of Paeoniae Radix, has inhibitory effects on PTX-induced mechanical allodynia and investigate the underlying mechanisms...
February 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28188357/analgesic-antiallodynic-and-anticonvulsant-activity-of-novel-hybrid-molecules-derived-from-n-benzyl-2-2-5-dioxopyrrolidin-1-yl-propanamide-and-2-2-5-dioxopyrrolidin-1-yl-butanamide-in-animal-models-of-pain-and-epilepsy
#9
Anna Rapacz, Krzysztof Kamiński, Jolanta Obniska, Paulina Koczurkiewicz, Elżbieta Pękala, Barbara Filipek
The purpose of the present study was to examine the analgesic activity of six novel hybrid molecules, which demonstrated in the previous research anticonvulsant activity in the maximal electroshock seizure (MES) and subcutaneous pentylenetetrazole seizure (scPTZ) tests in mice. The antinociceptive properties were estimated in three models of pain in mice-the hot plate test, the formalin test, and in the oxaliplatin-induced neuropathy. Moreover, extended anticonvulsant studies were carried out and the antiseizure activity was investigated in the 6-Hz test...
February 10, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28188345/-diagnostic-nerve-ultrasonography
#10
T Bäumer, A Grimm, T Schelle
CLINICAL/METHODICAL ISSUE: For the diagnostics of nerve lesions an imaging method is necessary to visualize peripheral nerves and their surrounding structures for an etiological classification. STANDARD RADIOLOGICAL METHODS: Clinical neurological and electrophysiological investigations provide functional information about nerve lesions. The information provided by a standard magnetic resonance imaging (MRI) examination is inadequate for peripheral nerve diagnostics; however, MRI neurography is suitable but on the other hand a resource and time-consuming method...
February 10, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28184326/does-endurance-training-compensate-for-neurotrophin-deficiency-following-diabetic-neuropathy
#11
Rasoul Eslami, Reza Gharakhanlou, Abdolreza Kazemi, Amir Bahador Dakhili, Ghazaleh Sorkhkamanzadeh, Ayob Sheikhy
BACKGROUND: A lack of neurotrophic support is believed to contribute to the development of diabetic neuropathy. On the other hand, neurotrophins have consistently been shown to increase in the central and peripheral nervous system following exercise, but the effects of exercise intervention on brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) in diabetic neuropathy are not understood. OBJECTIVES: This experimental study was designed and carried out at the Tarbiat Modares university (TMU) in Tehran, Iran, to investigate the hypothesis that increased activity as endurance training can help to increase the endogenous expression of neurotrophins in diabetic rats...
October 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28182728/uncovering-sensory-axonal-dysfunction-in-asymptomatic-type-2-diabetic-neuropathy
#12
Jia-Ying Sung, Jowy Tani, Tsui-San Chang, Cindy Shin-Yi Lin
This study investigated sensory and motor nerve excitability properties to elucidate the development of diabetic neuropathy. A total of 109 type 2 diabetes patients were recruited, and 106 were analyzed. According to neuropathy severity, patients were categorized into G0, G1, and G2+3 groups using the total neuropathy score-reduced (TNSr). Patients in the G0 group were asymptomatic and had a TNSr score of 0. Sensory and motor nerve excitability data from diabetic patients were compared with data from 33 healthy controls...
2017: PloS One
https://www.readbyqxmd.com/read/28181561/peripheral-sensory-neuron-injury-contributes-to-neuropathic-pain-in-experimental-autoimmune-encephalomyelitis
#13
I-Ching Wang, Chen-Yen Chung, Fang Liao, Chih-Cheng Chen, Cheng-Han Lee
Multiple sclerosis (MS)-induced neuropathic pain deteriorates quality of life in patients but is often refractory to treatment. In experimental autoimmune encephalomyelitis (EAE), a rodent model of MS, animals develop neuropathy and inflammation-induced tissue acidosis, which suggests the involvement of acid-sensing ion channels (ASICs). Also, peripheral neuropathy is reported in MS patients. However, the involvement of the peripheral nervous system (PNS) in MS neuropathic pain remains elusive. This study investigated the contribution of ASICs and peripheral neuropathy in MS-induced neuropathic pain...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28179342/phase-i-study-of-nab-paclitaxel-plus-gemcitabine-as-neoadjuvant-therapy-for-borderline-resectable-pancreatic-cancer
#14
Ken-Ichi Okada, Seiko Hirono, Manabu Kawai, Motoki Miyazawa, Atsushi Shimizu, Yuji Kitahata, Masaki Ueno, Shinya Hayami, Hiroki Yamaue
BACKGROUND/AIM: The aim of this study was to investigate the safety and feasibility of neoadjuvant nab-paclitaxel plus gemcitabine therapy for patients with borderline resectable pancreatic carcinoma (BRPC). PATIENTS AND METHODS: The study was a prospective single-center phase I trial for patients with BRPC. The primary endpoint was the toxicity, and secondary endpoints were the resection rate, the R0 resection rate and quality of life (QOL) regarding the peripheral sensory neuropathy (PSN)...
2017: Anticancer Research
https://www.readbyqxmd.com/read/28174380/-efficacy-and-safety-of-thp-cop-for-diffuse-large-b-cell-lymphoma
#15
Midori Watase, Kojiro Takahashi, Naoko Hanazawa, Yoshitake Shinohara, Takehiro Higashi, Junichi Tsukada
PURPOSE: We studied the efficacy and safety of THP-COP(pirarubicin, cyclophosphamide, vincristine, and prednisolone)for elderly patients with diffuse large B-cell lymphoma(DLBCL). METHODS: We retrospectively investigated the efficacy and adverse events of THP-COP in previously untreated patients with DLBCL who completed THP-COP as first-line chemotherapy between December 2009 and December 2014. RESULTS: The study included 32 previously untreated DLBCL patients aged 67- 85 years(median, 77 years)...
January 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28169005/nelarabine-associated-reversible-guillain-barr%C3%A3-like-syndrome-or-myelopathy-in-an-adult-patient-with-primary-refractory-t-lymphoblastic-lymphoma
#16
Chrysavgi Lalayanni, Eirini Baldoumi, Sotiris Papayiannopoulos, Konstantia Tziola, Riad Saloum, Achilles Anagnostopoulos
Nelarabine is a purine analogue used for the treatment of patients with relapsed or refractory T-cell acute lymphoblastic leukemia and T-cell lymphoblastic lymphoma mainly as a bridge to stem cell transplantation. The water-soluble prodrug of 9-beta-D-arabinofuranosyl guanine (Ara-G) is phosphorylated within leukemic cells to form ara-G triphosphate (ara-GTP), which terminates DNA chain elongation, resulting in cell death. The drug received accelerated approval by the US Food and Drug Administration (FDA) on October 2005 based on the induction of complete remissions in 2 phase II trials...
November 17, 2016: Current Problems in Cancer
https://www.readbyqxmd.com/read/28167615/the-familial-dysautonomia-disease-gene-ikbkap-elp1-is-required-in-the-developing-and-adult-central-nervous-system
#17
Marta Chaverra, Lynn George, Marc Mergy, Hannah Waller, Katharine Kujawa, Connor Murnion, Ezekiel Sharples, Julian Thorne, Nathaniel Podgajny, Andrea Grindeland, Yumi Ueki, Steven Eiger, Cassie Cusick, A Michael Babcock, George A Carlson, Frances Lefcort
Hereditary sensory and autonomic neuropathies (HSANs) are a genetically and clinically diverse group of disorders defined by peripheral nervous system (PNS) dysfunction. HSAN Type III, Familial Dysautonomia (FD), results from a single base mutation in the gene IKBKAP that encodes a scaffolding unit for a multi-subunit complex Elongator. Since mutations in other Elongator subunits (ELP2-4) are associated with central nervous system (CNS) disorders, the goal of this study was to investigate a potential CNS requirement for Ikbkap/Elp1 The sensory and autonomic pathophysiology of FD is fatal, with the majority of patients dying by age 40...
February 6, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28164440/effect-of-human-umbilical-cord-blood-mesenchymal-stem-cells-administered-by-intravenous-or-intravitreal-routes-on-cryo-induced-retinal-injury
#18
Eman M Mohamed, Shaimaa A Abdelrahman, Samia Hussein, Sally M Shalaby, Hala Mosaad, Ahmed M B Awad
Traumatic optic neuropathy is an important cause of severe vision loss. So, many attempts were performed to transplant stem cells systemically or locally to regenerate the injured retina. In this study, we investigated the effect of human umbilical cord blood mesenchymal stem cells (hUBMSCs) on histological structure, apoptotic, antiapoptotic, oxidant and antioxidant markers in an experimental model of cryo-induced retinal damage in mice. Forty-eight mice were included with 4 major groups; group I contained 18 mice as controls...
February 5, 2017: IUBMB Life
https://www.readbyqxmd.com/read/28158151/efficacy-and-safety-of-0-625-and-1-25-capsaicin-patch-in-peripheral-neuropathic-pain-multi-center-randomized-and-semi-double-blind-controlled-study
#19
Jee-Youn Moon, Pyung-Bok Lee, Yong-Chul Kim, Sang-Chul Lee, Francis S Nahm, Eunjoo Choi
BACKGROUND: Topical capsaicin therapy may be of benefit in providing pain relief in patients with peripheral neuropathy. OBJECTIVES: To investigate the efficacy and safety of 0.625% (50 µg/cm2) and 1.25% (100 µg/cm2) capsaicin patches (CPs) compared to conventional 0.075% capsaicin cream or placebo patches in patients suffering from peripheral neuropathy. STUDY DESIGN: Early Phase II, multi-center, randomized, semi-double-blind, and placebo-controlled clinical trial...
February 2017: Pain Physician
https://www.readbyqxmd.com/read/28156643/pilot-study-of-minocycline-for-the-prevention-of-paclitaxel-associated-neuropathy-accru-ru221408i
#20
Travis J Dockter, Patricia J Zekan, Briant Fruth, Kathryn Jean Ruddy, Lauren E Ta, Todor Dentchev, Nguyet Le-Lindqwister, William M Sikov, Charles L Loprinzi
: 220 Background: Paclitaxel is associated with both an acute pain syndrome (P-APS) and chronic chemotherapy-induced peripheral neuropathy (CIPN). Preliminary animal data suggest that minocycline may be effective for the prevention of chemotherapy-induced neurotoxicity. The purpose of this pilot study was to investigate the efficacy of minocycline for the prevention of CIPN and P-APS. METHODS: Patients with breast cancer were enrolled prior to initiating neoadjuvant or adjuvant weekly paclitaxel for 12 weeks...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
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