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diabetes neuropathy

Christoph Niemietz, Christoph Röcken, Matthias Schilling, Jörg Stypman, Constantin E Uhlig, Hartmut H-J Schmidt
Transthyretin-related Familial Amyloid Polyneuropathy (ATTR Amyloidosis, former FAP, here called TTR-FAP) is a rare, progressive autosomal dominant inherited amyloid disease ending fatal within 5 - 15 years after final diagnosis. TTR-FAP is caused by mutations of transthyretin (TTR), which forms amyloid fibrils affecting peripheral and autonomic nerves, the heart and other organs. Due to the phenotypic heterogeneity and partly not specific enough clinical symptoms, diagnosis of TTR-FAP can be complicated...
March 2018: Deutsche Medizinische Wochenschrift
Syed Rizwan A Bokhari, Faisal Akhtar, Qurrat-Ul-Ain Abid, Uzma Jahanzaib, Maria R Bokhari, Sana Hasan, Khurshid Khan
Postural hypotension, as a manifestation of autonomic neuropathy is a very sinister long-term debilitating complication of diabetes, is usually irreversible and tough to manage with medications. The treatment of this condition following the standard treatment protocols can be contraindicated in the patients with underlying heart conditions. We report the case of a patient at our hospital who presented with full-blown symptomatic dysautonomia secondary to long-standing diabetes, with bedside testing positive for autonomic dysfunction...
January 8, 2018: Curēus
Subhodip Pramanik, Sujoy Ghosh, Pradip Mukhopadhyay, Rana Bhattacharjee, Bidisha Mukherjee, Samim Ali Mondal, Ipsita Ghosh, Ranajit Bari, Subhankar Chowdhury
Objective: Type 2 diabetes mellitus and thyroid dysfunction (TD) are two major public health endocrine problem, but the prevalence of TD and iodine status in patients with T2 DM in India is less studied. The study objective was to explore the prevalence of TD and to evaluate iodine health in type 2 diabetes patients attending a tertiary care center in Eastern India. Methods: Consecutive 100 patients with diabetes attending outpatient department were evaluated clinically and biochemically (thyrotropin [TSH], free thyroxine, anti-TPO antibody, and urinary iodine)...
January 2018: Indian Journal of Endocrinology and Metabolism
Dharmadas Salini, Kumar Harish, Pillay Minnie, Karimassery R Sundaram, Bal Arun, Chirukandath J Sandya, Thacho S Mangalanandan, Lakshmanan Vivek, Valiyaparambil P Praveen
Aims: Available literature on the prevalence of Charcot arthropathy (CA) represents mainly Western population. No study has been reported from India so far. Hence we attempted to study the prevalence of CA in patients with type 2 diabetes mellitus and severe peripheral neuropathy (T2DMPN), belonging to Indian population amongst whom type 2 diabetes is on the rise in alarming proportions. Materials and Methods: Medical records of 3387 patients who performed an objective vibration perception threshold test during the year 2015 were screened for T2DMPN...
January 2018: Indian Journal of Endocrinology and Metabolism
Nirupa D Jayaraj, Bula J Bhattacharyya, Abdelhak A Belmadani, Dongjun Ren, Craig A Rathwell, Sandra Hackelberg, Brittany E Hopkins, Herschel R Gupta, Richard J Miller, Daniela M Menichella
Painful diabetic neuropathy (PDN) is an intractable complication of diabetes that affects 25% of patients. PDN is characterized by neuropathic pain and small-fiber degeneration, accompanied by dorsal root ganglion (DRG) nociceptor hyperexcitability and loss of their axons within the skin. The molecular mechanisms underlying DRG nociceptor hyperexcitability and small-fiber degeneration in PDN are unknown. We hypothesize that chemokine CXCL12/CXCR4 signaling is central to this mechanism, as we have shown that CXCL12/CXCR4 signaling is necessary for the development of mechanical allodynia, a pain hypersensitivity behavior common in PDN...
March 13, 2018: Journal of Clinical Investigation
Masaki Kobayashi, Douglas W Zochodne
Diabetic polyneuropathy (DPN) continues to be generally considered as a "microvascular" complication of diabetes mellitus alongside nephropathy and retinopathy. The microvascular hypothesis, however, may be tempered by the concept that diabetes directly targets dorsal root ganglion sensory neurons. This neuron specific concept, supported by accumulating evidence, might account for important features of DPN, such as its early sensory neuron degeneration. Diabetic sensory neurons develop neuronal atrophy alongside a series of mRNA changes related to declines in structural proteins, increases in heat shock protein (HSP), increases in the receptor for advanced glycation endproducts (RAGE), declines in growth factor signaling and other changes...
March 13, 2018: Journal of Diabetes Investigation
Yan-Hua Xiao, Xiao-Yun He, Qing Han, Fan Yang, Su-Xian Zhou
Platelet-activating factor (PAF) promotes glomerular extracellular matrix (ECM) deposition, primarily through activation of the protein kinase C (PKC) pathway. The present study was designed to investigate whether atorvastatin, which mediates a protective effect against glomerular ECM deposition and diabetic neuropathy, may interfere with the PKC‑transforming growth factor‑β1 (TGF‑β1) pathway in a model of human mesangial cells (HMCs) exposed to a high glucose (HG) and lysophosphatidylcholine (LPC) environment...
March 9, 2018: Molecular Medicine Reports
Karel Kostev, Alexander Lucas, Louis Jacob
BACKGROUND: The goal of this study was to analyze the frequency of blood pressure (BP) and estimated glomerular filtration rate (eGFR) testing in type 2 diabetes mellitus (T2DM) patients followed in general and diabetological practices in Germany. METHODS: The study included individuals who had at least two concultations due to T2DM diagnosis (ICD-10: E11) between January and December 2016. Patients were followed in 557 general and diabetological practices. The primary outcome was the frequency of BP and eGFR testing in T2DM patients in 2016...
March 12, 2018: Experimental and Clinical Endocrinology & Diabetes
Khaled G Abdel-Wahhab, Eitedal M Daoud, Aliaa El Gendy, Hagar H Mourad, Fathia A Mannaa, Maha M Saber
Diabetic neuropathy (DN) is the highly occurred complication of diabetes mellitus; it has been defined as an event of peripheral nerve dysfunction characterized by pain, allodynia, hyperalgesia, and paraesthesia. The current study was conducted to evaluate the efficacy of low-level laser therapy (LLLT) in the management of neuropathy in diabetic rats. The used animals were divided into the following groups: negative control, streptozotocin-induced diabetic rats, and diabetic rats with peripheral neuropathy (DNP) and DNP treated with gabapentin or with LLLT...
March 12, 2018: Applied Biochemistry and Biotechnology
Ji-Yuan Zhao, Li Yang, Hu-Hu Bai, Jiang-Ping Liu, Zhan-Wei Suo, Xian Yang, Xiao-Dong Hu
Protein tyrosine phosphatase 1B (PTP1B) has been shown to dephosphorylate and inactivate insulin receptors, which contributes to the pathogenesis of diabetes. Neuropathic pain is one of the severe complications that results from diabetic neuropathy. However, whether PTP1B was involved in the development of diabetic neuropathic pain is largely unknown. The current study illustrated that PTP1B was located in spinal cord dorsal horn neurons of Sprague-Dawley rats. Western blot analysis demonstrated that the diabetic neuropathic pain induced by intraperitoneal injection of streptozotocin was associated with an increased protein expression and a dynamic redistribution of spinal PTP1B into excitatory glutamatergic synapses...
March 8, 2018: European Journal of Pharmacology
Channabasappa Shivaprasad, Goel Amit, Kolly Anish, Boppana Rakesh, Biswas Anupam, Yalamanchi Aiswarya
AIMS: To investigate the factors associated with abnormal electrochemical skin conductance (ESC) in patients with type 2 diabetes mellitus (T2D) and early diabetic peripheral neuropathy (DPN). METHODS: We recruited 523 consecutive patients with T2D (median age: 50 [interquartile range: 16] years; median T2D duration: 4 [5] years). Sudomotor dysfunction was defined as an ESC <60 µS, and DPN as a neuropathy disability score (NDS) ≥6. Logistic regression was performed to determine the predictors of sudomotor dysfunction in patients with DPN...
March 7, 2018: Diabetes Research and Clinical Practice
Katrine Laura Rasmussen, Børge Grønne Nordestgaard, Sune Fallgaard Nielsen
BACKGROUND: Whether the complement system is involved in the development of diabetic microvascular disease is unknown. We tested the hypothesis that high concentrations of complement C3 are associated with increased risk of diabetic retinopathy, nephropathy, and neuropathy in individuals from the general population. METHODS: We studied 95202 individuals from the general population with baseline measurements of complement C3, genotyped for rs1065489, rs429608, and rs448260 determining concentrations of complement C3, and enrolled in the Copenhagen General Population Study from 2003 through 2013, following them until April 10, 2013...
March 9, 2018: Clinical Chemistry
Reema Abdelkareem Abu Khalaf, Dima Sabbah, Eveen Al-Shalabi, Iyad Al-Sheikh, Ghadeer Albadawi, Ghassan Abu Sheikha
BACKGROUND: Diabetes mellitus is a major worldwide health concern that has several serious complications including retinopathy, neuropathy, nephropathy and macrovascular diseases. OBJECTIVE: Dipeptidyl peptidase-IV (DPP-IV) inhibitors, gliptins, are a new class of antidiabetic agents that potentiates the action of incretins in decreasing the blood glucose levels. METHODS: In the present study, synthesis and characterization of a series of ten N4-sulfonamido-acrylic and phthalamic acid methyl esters (3a-e and 5a-e) were achieved...
March 8, 2018: Current Computer-aided Drug Design
C Randall Harrell, Bojana Simovic Markovic, Crissy Fellabaum, Aleksandar Arsenijevic, Valentin Djonov, Vladislav Volarevic
BACKGROUND: Pericytes are multipotent cells present in every vascularized tissue in the body. Despite the fact that they are well-known for more than a century, pericytes are still representing cells with intriguing properties. This is mainly because of their heterogeneity in terms of definition, tissue distribution, origin, phenotype and multi-functional properties. The body of knowledge illustrates importance of pericytes in the regulation of homeostatic and healing processes in the body...
March 9, 2018: Journal of Biomedical Science
Dan Ziegler, Rüdiger Landgraf, Ralf Lobmann, Karlheinz Reiners, Kristian Rett, Oliver Schnell, Alexander Strom
AIMS: We conducted a nationwide educational initiative to determine the prevalence and risk factors of diagnosed and undiagnosed painful and painless distal sensory polyneuropathy (DSPN). METHODS: Among 1,850 participants, 781 had no history of diabetes (ND), 126 had type 1 diabetes (T1D), and 943 had type 2 diabetes (T2D). Painful DSPN was defined as polyneuropathy detected by bedside tests with pain and/or burning in the feet, while painless DSPN was defined as polyneuropathy with paresthesias, numbness, or absence of symptoms...
March 5, 2018: Diabetes Research and Clinical Practice
Evangelos Agathos, Anastasios Tentolouris, Ioanna Eleftheriadou, Panagiota Katsaouni, Ioannis Nemtzas, Alexandra Petrou, Christina Papanikolaou, Nikolaos Tentolouris
Objective To examine the effect of α-lipoic acid on neuropathic symptoms in patients with diabetic neuropathy (DN). Methods Patients with painful DN were treated with 600 mg/day α-lipoic acid, orally, for 40 days. Neuropathy Symptom Score (NSS), Subjective Peripheral Neuropathy Screen Questionnaire (SPNSQ) and douleur neuropathique (DN)4 questionnaire scores were assessed at baseline and day 40. Quality-of-life treatment effects were assessed by Brief Pain Inventory (BPI), Neuropathic Pain Symptom Inventory (NPSI) and Sheehan Disability Scale (SDS)...
January 1, 2018: Journal of International Medical Research
Laura R Rich, Angus M Brown
The stimulus evoked compound action potential (CAP), recorded using suction electrodes, provides an index of the relative number of conducting axons within a nerve trunk. As such the CAP has been used to elucidate the diverse mechanisms of injury resulting from a variety of metabolic insults to central nervous white matter, whilst also providing a model with which to assess the benefits of clinically relevant neuro-protective strategies. In addition the technique lends itself to the study of metabolic cell-to-cell signalling that occurs between glial cells and neurones, and to exploring the ability of non-glucose substrates to support axon conduction...
March 8, 2018: Journal of Physiology
Sean C Maguire, Christina A Fleming, Gavin O'Brien, Gerald McGreal
BACKGROUND: Lumbar sympthectomy (LS) was traditionally performed for intermittent claudication but is now eclipsed by revascularisation for that indication. However, it retains a role in the management of critical limb ischaemia and other conditions causing lower limb pain with or without ischaemia. We report the role of LS in modern surgical practice when revascularisation and pain management options have been exhausted. METHODS: A medical chart review was performed on all patients who underwent LS in our unit from 2005 to 2016 (inclusive)...
March 7, 2018: Irish Journal of Medical Science
Daisuke Matsutani, Masaya Sakamoto, Hiroyuki Iuchi, Souichirou Minato, Hirofumi Suzuki, Yosuke Kayama, Norihiko Takeda, Ryuzo Horiuchi, Kazunori Utsunomiya
BACKGROUND: It is presently unclear whether glycemic variability (GV) is associated with baroreflex sensitivity (BRS), which is an early indicator of cardiovascular autonomic neuropathy. The present study is the first to examine the relationships between BRS and GV measured using continuous glucose monitoring (CGM). METHODS: This was a multicenter, prospective, open-label clinical trial. A total of 102 patients with type 2 diabetes were consecutively recruited for this study...
March 7, 2018: Cardiovascular Diabetology
Alejandra Gonzalez-Duarte
PURPOSE: Hereditary transthyretin amyloidosis (hATTR amyloidosis) is a progressive disease primarily characterized by adult-onset sensory, motor, and autonomic neuropathy. In this article, we discuss the pathophysiology and principal findings of autonomic neuropathy in hATTR amyloidosis, the most common methods of assessment and progression, and its relation as a predictive risk factor or a measure of progression in the natural history of the disease. METHODS: A literature search was performed using the terms "autonomic neuropathy," "dysautonomia," and "autonomic symptoms" in patients with hereditary transthyretin amyloidosis and familial amyloid polyneuropathy...
March 6, 2018: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
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