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diabetic neuropathy and ncv

Matthew S Yorek, Lawrence J Coppey, Hanna Shevalye, Alexander Obrosov, Randy H Kardon, Mark A Yorek
Aims. In this study a streptozotocin induced type 1 diabetes mouse model was used to assess the effectiveness of salsalate, menhaden oil, the combination of salsalate and menhaden oil, or resolvin D1 on neuropathic endpoints. Materials and Methods. Changes in body weight, blood glucose, serum markers for triglycerides, free fatty acids, cholesterol, and resolvin D1, motor and sensory nerve conduction velocities and thermal sensitivity were assessed, as well as performing in vivo confocal microscopy of subepithelial corneal nerves and immunohistochemistry of nerves in the cornea and foot pad...
2016: Journal of Nutrition and Metabolism
Mariko Kobori, Soroku Yagihashi, Norie Shiina, Nana Shiozawa, Akiko Haginoya, Misato Ojima, Satako Douguchi, Atsuko Tamasawa, Miyoko Saito, Masayuki Baba, Takeshi Osonoi
AIM/INTRODUCTION: Despite the commonest complication of diabetes, the pattern of clinical development of diabetic neuropathy is not well known. In this study, we retrospectively examined sequential changes in nerve conduction studies (NCS) for 4 years to characterize the way how neuropathic changes develop in patients with type 2 diabetes. MATERIALS AND METHOD: We randomly selected 158 patients with type 2 diabetes who newly visited our hospital and underwent serial 4 year NCS...
October 13, 2016: Journal of Diabetes Investigation
Yi-Jen Wu, Philip Tseng, Han-Wei Huang, Jon-Fan Hu, Chi-Hung Juan, Kuei-Sen Hsu, Chou-Ching Lin
Diabetes mellitus can lead to diabetic polyneuropathy (DPN) and cognitive deficits that manifest as peripheral and central neuropathy, respectively. In this study we investigated the relationship between visuospatial working memory (VSWM) capacity and DPN severity, and attempted to improve VSWM in DPN patients via the use of transcranial direct current stimulation (tDCS). Sixteen DPN patients and 16 age- and education-matched healthy control subjects received Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV) and Montreal Cognitive Assessment (MOCA) for baseline cognitive assessment...
2016: Frontiers in Human Neuroscience
Rudra Prasad Roy, Kaushik Ghosh, Manas Ghosh, Amitava Acharyya, Ambarish Bhattacharya, Mrinal Pal, Sisir Chakraborty, Nilanjan Sengupta
BACKGROUND: Long-term therapy with metformin was shown to decrease the Vitamin B12 level and manifested as peripheral neuropathy. AIM: The aim of this study is to define the prevalence of Vitamin B12 deficiency in early Type 2 diabetic patients (duration ≤5 years or drug treatment ≤3 years) and the relationship among metformin exposure and levels of cobalamin (Cbl), folic acid, and homocysteine (Hcy) with severity of peripheral neuropathy. METHODOLOGY: This is a cross-sectional study involving randomly selected ninety patients (male 56, female 34) between age groups of 35 and 70 years, comparing those who had received >6 months of metformin (Group A) (n = 35) with those without metformin (Group B) (n = 35) and patients taking metformin with other oral hypoglycemic agent (Group C) (n = 20)...
September 2016: Indian Journal of Endocrinology and Metabolism
Y-P Jin, X-F Su, H-Q Li, J-D Wu, B Ding, R Sun, T Shan, L Ye, J-H Ma
Background: To determine the therapeutic efficacy and cost-effective of pancreatic kininogenase (PKase) on treatment of diabetic peripheral neuropathy (DPN) compared with Prostaglandin E1 (PGE1) in patients with type 2 diabetes. Methods: 104 patients with DPN receiving standard glucose control therapy were randomly assigned into 3 groups: Group-A received PKase treatment, Group-B received PGE1 treatment, and Group-C received only standard glucose control therapy. Michigan neuropathy screening instrument (MNSI) score, neurophysiology examination, and nerve conduction velocity were measured...
October 4, 2016: Experimental and Clinical Endocrinology & Diabetes
Bing Pang, Tian-Yu Zhao, Lin-Hua Zhao, Fang Wan, Ru Ye, Qiang Zhou, Feng Tian, Xiao-Lin Tong
OBJECTIVE: This meta-analysis was performed to systematically assess the efficacy and safety of the Chinese herbal medicine Huangqi Guizhi Wuwu Decoction (HGWWD) for treating diabetic peripheral neuropathy. DATA SOURCES: Six electronic databases, including the Cochrane Library, MEDLINE database, Chinese Biomedical Database, Chinese National Knowledge Infrastructure Database, Chinese Science and Technique Journals Database, and the Wanfang Database, were searched on the internet for randomized controlled trials published up until 1 December 2015...
August 2016: Neural Regeneration Research
Fukashi Ishibashi, Rie Kojima, Miki Taniguchi, Aiko Kosaka, Harumi Uetake, Mitra Tavakoli
This study aims to establish the corneal nerve fiber (CNF) morphological alterations in a large cohort of type 2 diabetic patients and to investigate the association between the bead size, a novel parameter representing composite of accumulated mitochondria, glycogen particles, and vesicles in CNF, and the neurophysiological dysfunctions of the peripheral nerves. 162 type 2 diabetic patients and 45 healthy control subjects were studied in detail with a battery of clinical and neurological examinations and corneal confocal microscopy...
2016: Journal of Diabetes Research
Long Chen, Bing Li, Biqin Chen, Yiye Shao, Qiong Luo, Xiaohong Shi, Yinghui Chen
Thymoquinone has been reported to exhibit antioxidant and anti-inflammatory effects. Inflammation plays an important role in pathogenesis of diabetic peripheral neuropathy. This study investigated the effects of TQ on proliferation and apoptosis of Schwann cells exposed to high glucose conditions and electrophysiological and morphological changes of the sciatic nerve in a DPN rat model as well as relevant inflammatory mechanism. Cell proliferation and apoptosis of Schwann cells were measured using the Cell Counting Kit-8 and flow cytometry...
2016: Scientific Reports
Mei Lu, Kunshan Li, Jiali Wang
OBJECTIVE: To compare the clinical efficacy between acupuncture and intravenous administration of lipoic acid and alprostadil for distal symmetric multiple peripheral neuropathy of diabetes mellitus. METHODS: Sixty patients were randomly divided into an acupuncture group (31 cases) and a medication group (29 cases). Patients in the two groups received basic treatment to control blood sugar within a safe range. On this basis, patients in the acupuncture group were treated with acupuncture at Geshu (BL 17), Weiwanxiashu (EX-B 3), Ganshu (BL 18), Pishu (BL 20), Shenshu (BL 23), Zusanli (ST 36), Taixi (KI 3), ashi points, etc...
May 2016: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
Amin Hasanvand, Hossein Amini-Khoei, Mohammad-Reza Hadian, Alireza Abdollahi, Seyed Mohammad Tavangar, Ahmad Reza Dehpour, Elika Semiei, Shahram Ejtemaei Mehr
Diabetic neuropathy (DN) is characterized as Hyperglycemia activates thdisturbed nerve conduction and progressive chronic pain. Inflammatory mediators, particularly cytokines, have a determinant role in the pathogenesis of neuropathic pain. The activity of adenosine monophosphate protein kinase (AMPK), an energy charge sensor with neuroprotective properties, is decreased in diabetes. It has been reported that activation of AMPK reduces the systemic inflammation through inhibition of cytokines. In this study, we aimed to investigate the probable protective effects of AMPK on DN in a rat of diabetes...
October 2016: Inflammopharmacology
Xiaopei Cui, Hua Feng, Xia Xu, Haijun Li, Hongyu Zhang
Aim. To investigate the effect of Tongxinluo (Txl), a Chinese herbal compound, on diabetic peripheral neuropathy (DPN). Methods and Results. Diabetic rat model was established by peritoneal injection of streptozotocin (STZ). Txl ultrafine powder treatment for 16 weeks from the baseline significantly reversed the impairment of motor nerve conductive velocity (MNCV), mechanical hyperalgesia, and nerve structure. We further proved that Tongxinluo upregulates PGC-1α and its downstream factors including COX IV and SOD, which were involved in mitochondrial biogenesis...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
Hongping Yao, Juanyi Feng, Qiaowei Zheng, Youxia Wei, Shixiang Wang, Weiyi Feng
AIMS: This study investigated the efficacies of gliclazide (GLZ), methylcobalamin (MCA), and GLZ+MCA combination therapy on DPN by evaluating the treatment-related changes in peripheral nerve function, the polyol pathway, and oxidative stress in the sciatic nerve of streptozotocin-induced diabetic rats. MATERIALS AND METHODS: The rat model of streptozotocin-induced diabetes was orally given GLZ (25mg/kg/day), MCA (175μg/kg/day), and GLZ+MCA (25mg/kg/day+175μg/kg/day) combination therapy for 8weeks, in order to observe its effects on the motor nerve conduction velocity (MNCV), on the activities of Na(+), K(+)-ATPase, aldose reductase(AR), AR mRNA expression, on the polyol contents, antioxidative enzyme activities and peroxidation products in the sciatic never tissue...
September 15, 2016: Life Sciences
Jin-Dan Wu, Sha Tao, Xing Jin, Lan-Lan Jiang, Yun Shen, Yong Luo, Peng Zhang, Kok-Onn Lee, Lei Ye, Jian-Hua Ma
BACKGROUND: Diabetic peripheral neuropathy (DPN) is the most common chronic complication of diabetes. We aim to investigate the efficacy of Prostaglandin E1 (PGE1) treatment in addition to intensive insulin therapy on DPN in patients with type 2 diabetes. METHODS: Seventy-seven patients with DPN received daily intravenous injection of Prostaglandin E1 (PGE1) in lipid microspheres (Lipo-PGE1) for 10days as an additional therapy to standard glucose control therapy (PGE1 group)...
July 12, 2016: Prostaglandins & Other Lipid Mediators
Ayumu Matsuoka, Ayako Mitsuma, Osamu Maeda, Hiroaki Kajiyama, Hitoshi Kiyoi, Yasuhiro Kodera, Masato Nagino, Hidemi Goto, Yuichi Ando
Chemotherapy-induced peripheral neurotoxicity (CIPN) seriously impairs patients' quality of life cumulatively and dose-dependently. Because assessment of CIPN usually depends on patients' subjective evaluation of symptoms, objective and quantitative measures are needed. We evaluated a point-of-care nerve conduction device (POCD), previously validated for the assessment of diabetic peripheral neuropathy. Sensory nerve action potential (SNAP) amplitude and sensory nerve conduction velocity (SNCV) of the sural nerve were measured using a portable, automated POCD (DPNCheck(®) , NeuroMetrix Inc...
July 14, 2016: Cancer Science
Fukashi Ishibashi, Miki Taniguchi, Rie Kojima, Asami Kawasaki, Aiko Kosaka, Harumi Uetake
AIMS/INTRODUCTION: To measure the elasticity of the tibial nerve using sonoelastography, and to associate it with diabetic neuropathy severity, the cross-sectional area of the tibial nerve and neurophysiological findings in type 2 diabetic patients. MATERIALS AND METHODS: The elasticity of the tibial nerve was measured as the tibial nerve:acoustic coupler strain ratio using high-resolution ultrasonography in 198 type 2 diabetic patients stratified into subgroups by neuropathy severity, and 29 control participants whose age and sex did not differ from the diabetic subgroups...
May 2016: Journal of Diabetes Investigation
Heng Yan, Enshui Zhang, Chang Feng, Xin Zhao
Neuropathy is the most common diabetic complication. Although the A1 and A2A adenosine receptors are important pharmacological targets in alleviating diabetic neuropathy, the role of the A3 adenosine receptor remains unknown. Because the A3 adenosine receptor regulates pain induced by chronic constriction injury or chemotherapy, its stimulation might also attenuate diabetic neuropathy. This study examines the effects of systemic treatment with the A3 adenosine receptor agonist 1-deoxy-1-[6-[[(3-iodophenyl)methyl]amino]-9H-purin-9-yl]-N-methyl-β-d-ribofuranuronamide (IB-MECA) on diabetic neuropathy and explores the putative mechanisms underlying its pharmacological effects...
October 2016: Journal of Neuroscience Research
Samane Jahanabadi, Mohamad Reza Hadian, Javad Shamsaee, Seyed Mohammad Tavangar, Alireza Abdollahi, Ahmadreza Dehpour, Shahram Ejtemaei Mehr
OBJECTIVES: Diabetic neuropathy (DN) is a common complication of diabetes that leads to allodynia, impaired nerve conduction, and progressive sensory loss. The aim of this study was to observe the effect of a high-affinity cannabinoid receptors agonist, WIN 55,212-2, on thermal hyperalgesia, nerve conduction velocity and sciatic nerve histopathology in diabetic rats. MATERIALS AND METHODS: Diabetes was induced in rats using a single dose of streptozotocin (45 mg/kg IP)...
April 2016: Iranian Journal of Basic Medical Sciences
Shengjie Ge, Jing Xie, Lequn Zheng, Lijuan Yang, Hong Zhu, Xingbo Cheng, Feixia Shen
AIMS: To investigate the associations between inflammatory markers, serum anti-ganglioside antibodies (anti-GS-ab), serum plasminogen activator inhibitor-1 (PAI-1), tumor necrosis factor-α (TNF-α), C-reactive protein (CRP), and diabetic peripheral neuropathy (DPN). METHODS: Study subjects were divided into three groups: normal group (N group) with 101 healthy individuals; diabetes mellitus without peripheral neuropathy group (DM group) with 87 patients; and DPN group with 178 cases...
May 2016: Diabetes Research and Clinical Practice
D A Seyit, E Degirmenci, A Oguzhanoglu
INTRODUCTION: Neuropathy is a common complication of diabetes mellitus and is closely related to quality of life. There are many studies in which biological ingredients, such as alpha lipoic acid (ALA), that may inhibit or reduce the generation of diabetic neuropathy were investigated. Another biological agent that may reduce the generation of diabetic neuropathy is melatonin and there are a few studies that investigate the effects of melatonin on diabetic neuropathy. In this study we aimed to examine the effect of melatonin on experimentally induced diabetic neuropathy by comparing it with both ALA and control groups...
May 2016: Experimental and Clinical Endocrinology & Diabetes
Georgia Chatzikosma, Kalliopi Pafili, Maria Demetriou, Konstantinos Vadikolias, Efstratios Maltezos, Nikolaos Papanas
INTRODUCTION: New tests for improved diagnosis of diabetic peripheral neuropathy (DPN) are useful. MATERIAL AND METHODS: We evaluated the utility of automated nerve conduction study (NCS) of the sural nerve with a new portable device for the diagnosis of DPN in patients with type 2 diabetes mellitus (T2DM). This study included 114 T2DM patients (58 men) with mean age 64.60 ±8.61 years. Exclusion criteria were B12 depletion, alcohol abuse and other causes of peripheral neuropathy...
April 1, 2016: Archives of Medical Science: AMS
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