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Diabetic neuropathy pain

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https://www.readbyqxmd.com/read/28814157/the-role-and-mechanism-of-glutamic-nmda-receptor-in-the-mechanical-hyperalgesia-in-diabetic-rats
#1
Jin Wang, Zhaohui Sun, Yuzhao Wang, Huisheng Wang, Yuan Guo
OBJECTIVES: Some studies have shown that painful neuropathy is a common and costly complication of both type 1 and type 2 diabetes mellitus, and glutamate is involved in the process although the mechanisms are not clear. The purpose of the present study was to investigate the effect of N-methyl-D-aspartate (NMDA) receptor on mechanical hyperalgesia in diabetic rats and the possible mechanism. METHODS: Diabetic rat model was established by intraperitoneal injection of streptozotocin (STZ, 1%, 70 mg/kg) once, and evaluated by the change in the fasting blood glucose...
August 17, 2017: Neurological Research
https://www.readbyqxmd.com/read/28813083/ankle-brachial-index-and-diabetic-neuropathy-study-of-225-patients
#2
Liliana Chevtchouk, Marcio Heitor Stelmo da Silva, Osvaldo José Moreira do Nascimento
Objective: To evaluate neuropathic pain and peripheral vascular disease in diabetics and compare this with the length of time since diagnosis in type 1, and type 2 diabetes. Methods: A cross-sectional study with 225 diabetics chosen from their responses on the DN4 questionnaire, who were then evaluated with the ankle-brachial index (ABI), separating type 1 diabetes from type 2 diabetes. Results: A higher incidence of neuropathic pain in those over 60 years of age showed an ABI > 1...
August 2017: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/28794656/neuropathic-pain-responds-better-to-increased-doses-of-pregabalin-an-in-depth-analysis-of-flexible-dose-clinical-trials
#3
Michael Serpell, Mark Latymer, Mary Almas, Marie Ortiz, Bruce Parsons, Rita Prieto
BACKGROUND: Pregabalin is an effective treatment option for many patients with neuropathic pain. Higher doses of pregabalin have been shown to be more effective in improving pain outcomes but, in practice, failing to appropriately increase the dose can leave patients under-treated. METHODS: This was a pooled analysis of 6 flexible-dose clinical trials of pregabalin in patients with neuropathic pain (diabetic peripheral neuropathy, peripheral herpetic neuralgia, posttraumatic pain, or postsurgical pain)...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28772216/minocycline-attenuates-the-development-of-diabetic-neuropathy-by-inhibiting-spinal-cord-notch-signaling-in-rat
#4
Cheng Yang, Jie Gao, Banglin Wu, Nuo Yan, Hui Li, Yiqing Ren, Yufei Kan, Jiamin Liang, Yang Jiao, Yonghao Yu
We studied the effects of minocycline (an inhibitor of microglial activation) on the expression and activity of Notch-1 receptor, and explored the therapeutic efficacy of minocycline combined with Notch inhibitor DAPT in the treatment of diabetic neuropathic pain (DNP). Diabetic rat model was established by intraperitoneal injection (ip) of Streptozotocin (STZ). Expression and activity of Notch-1 and expression of macrophage/microglia marker Iba-1 were detected by WB. Diabetes induction significantly attenuated sciatic nerve conduction velocity, and dramatically augmented the expression and the activity of Notch-1 in the lumbar enlargement of the spinal cord...
July 31, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28767433/association-of-myelinated-primary-afferents-impairment-with-mechanical-allodynia-in-diabetic-peripheral-neuropathy-an-experimental-study-in-rats
#5
Chenlong Liao, Min Yang, Wenxiang Zhong, Pengfei Liu, Wenchuan Zhang
To investigate the mechanisms underlying the efficacy of surgical treatment for painful diabetic peripheral neuropathy. Rats were initially divided into 3 groups (I, control rats, II, streptozotocin-induced diabetic rats, III, streptozotocin-induced diabetic rats with latex tube encircling the sciatic nerve without compression). When mechanical allodynia (MA) became stable in the third week, one third of group III rats were sacrificed and the remainder were further divided into subgroups depending on whether the latex tube was removed...
July 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28757391/systemic-dexmedetomidine-attenuates-mechanical-allodynia-through-extracellular-sign-db-type-2-diabetic-mice
#6
Hui Chen, Xiang Xu, Xiao-Yu Yang, Bing-Yu Ling, He-Ping Sun, Chao Liu, Yu Qiu Zhang, Hong Cao, Lan Xu
Painful diabetic neuropathy (PDN) is a common complication of diabetes mellitus. However, the treatment for PDN is limited in clinical practice. In the present study, we investigated the effect of systemic administration dexmedetomidine (DEX), a selective alpha 2 adrenergic receptor (α2AR) agonist, on mechanical allodynia and its underlying mechanism in db/db mice, an animal model of type 2 diabetes mellitus. Our data demonstrated that db/db mice develop mechanical allodynia at the early stage of diabetes...
July 28, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28751195/antinociceptive-antiallodynic-and-antihyperalgesic-effects-of-the-5-ht1a-receptor-selective-agonist-nlx-112-in-mouse-models-of-pain
#7
Kinga Sałat, Marcin Kołaczkowski, Anna Furgała, Adriana Rojek, Joanna Śniecikowska, Mark A Varney, Adrian Newman-Tancredi
BACKGROUND AND PURPOSE: NLX-112 (a.k.a. befiradol, F13640) is a drug candidate intended for the treatment of l-DOPA-induced dyskinesia. It is a highly selective serotonin 5-HT1A receptor full agonist which has been previously tested in a variety of models of CNS effects including analgesic activity in rat. Its activity in mouse models of pain has not been previously investigated. EXPERIMENTAL APPROACH: The activity of NLX-112 was tested in mouse models of acute pain (hot plate), tonic pain (intraplantar formalin test), in the oxaliplatin-induced neuropathic pain model of chemotherapy-induced peripheral neuropathy and in the streptozotocin (STZ)-induced model of painful diabetic neuropathy...
July 24, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28746752/immunotherapy-for-diabetic-amyotrophy
#8
REVIEW
Yee Cheun Chan, Yew Long Lo, Edwin Sy Chan
BACKGROUND: People with diabetes mellitus (DM) sometimes present with acute or subacute, progressive, asymmetrical pain and weakness of the proximal lower limb muscles. The various names for the condition include diabetic amyotrophy, diabetic lumbosacral radiculoplexus neuropathies, diabetic femoral neuropathy or Bruns-Garland syndrome. Some studies suggest that diabetic amyotrophy may be an immune-mediated inflammatory microvasculitis causing ischaemic damage of the nerves. Immunotherapies would therefore be expected to be beneficial...
July 26, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28731977/interventions-for-neuropathic-pain-an-overview-of-systematic-reviews
#9
REVIEW
Svjetlana Dosenovic, Antonia Jelicic Kadic, Maja Miljanovic, Marina Biocic, Krste Boric, Marija Cavar, Nikolina Markovina, Katarina Vucic, Livia Puljak
Numerous interventions for neuropathic pain (NeuP) are available, but its treatment remains unsatisfactory. We systematically summarized evidence from systematic reviews (SRs) of randomized controlled trials on interventions for NeuP. Five electronic databases were searched up to March 2015. Study quality was analyzed using A Measurement Tool to Assess Systematic Reviews. The most common interventions in 97 included SRs were pharmacologic (59%) and surgical (15%). The majority of analyzed SRs were of medium quality...
August 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28729524/cardiac-arrest-following-drug-abuse-with-intravenous-tapentadol-case-report-and-literature-review
#10
Misbahuddin Khaja, George Lominadze, Konstantin Millerman
BACKGROUND Tapentadol is a centrally acting opioid analgesic, with a dual mode of action, as a norepinephrine reuptake inhibitor and an agonist of the μ-opioid receptor (MOR). Tapentadol is used for the management of musculoskeletal pain, and neuropathic pain associated with diabetic peripheral neuropathy. CASE REPORT A 32-year-old woman attended hospital for evaluation of an intractable headache. Computed tomography and magnetic resonance imaging of the brain were negative. She was found unresponsive in the bathroom on the day following hospital admission, and despite resuscitative measures, the patient died following cardiac arrest...
July 21, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28728577/integrating-data-from-randomized-controlled-trials-and-observational-studies-to-predict-the-response-to-pregabalin-in-patients-with-painful-diabetic-peripheral-neuropathy
#11
Joe Alexander, Roger A Edwards, Alberto Savoldelli, Luigi Manca, Roberto Grugni, Birol Emir, Ed Whalen, Stephen Watt, Marina Brodsky, Bruce Parsons
BACKGROUND: More patient-specific medical care is expected as more is learned about variations in patient responses to medical treatments. Analytical tools enable insights by linking treatment responses from different types of studies, such as randomized controlled trials (RCTs) and observational studies. Given the importance of evidence from both types of studies, our goal was to integrate these types of data into a single predictive platform to help predict response to pregabalin in individual patients with painful diabetic peripheral neuropathy (pDPN)...
July 20, 2017: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/28727270/efficacy-and-safety-of-pregabalin-for-painful-diabetic-peripheral-neuropathy-in-a-population-of-chinese-patients-a-randomized-placebo-controlled-trial
#12
Yiming Mu, Xiaomin Liu, Quanmin Li, Kangning Chen, Yu Liu, Xiaofeng Lv, Xiangjin Xu, Dongsheng Fan, Ningxiu Shang, Ruoyong Yang, Lynne Pauer, Changyu Pan
BACKGROUND: Limited information exists on the efficacy of pregabalin in Chinese patients with diabetic peripheral neuropathy (pDPN). METHODS: An 11-week, double-blind, placebo-controlled trial in Chinese pDPN patients randomized (1:1) to pregabalin 300 mg/day or placebo. Primary efficacy endpoint was change from baseline in mean daily pain score (0 = no pain;10 = worst possible pain). Secondary efficacy endpoints included overall weekly mean pain score, responder status, impression of change, pain intensity, and sleep...
July 20, 2017: Journal of Diabetes
https://www.readbyqxmd.com/read/28726540/mechanisms-of-the-analgesic-effect-of-calcitonin-on-chronic-pain-by-alteration-of-receptor-or-channel-expression
#13
Akitoshi Ito, Megumu Yoshimura
The polypeptide hormone calcitonin is well known clinically for its ability to relieve osteoporotic back pain and neuropathic pain such as spinal canal stenosis, diabetic neuropathy, chemotherapy-induced neuropathy, and complex regional pain syndrome. Because the analgesic effects of calcitonin have a broad range, the underlying mechanisms of pain relief by calcitonin are largely unknown. However, recent studies using several types of chronic pain models combined with various methods have been gradually clarifying the mechanism...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28725942/l-arginine-supplementation-prevents-allodynia-and-hyperalgesia-in-painful-diabetic-neuropathic-rats-by-normalizing-plasma-nitric-oxide-concentration-and-increasing-plasma-agmatine-concentration
#14
Lusliany J Rondón, M C Farges, N Davin, B Sion, A M Privat, M P Vasson, A Eschalier, C Courteix
PURPOSE: Neuropathic pain is a common diabetic complication. It is characterized by symptoms of spontaneous and stimulus-evoked pain including hyperalgesia and allodynia. L-Arginine is a common precursor of many metabolites of biological interest, in particular, nitric oxide (NO), ornithine, and hence polyamines. In central nervous system, NO, glutamate, and polyamines share an N-methyl-D-aspartate (NMDA) receptor-mediated effect. We hypothesized that a variation in arginine metabolism caused by diabetes may contribute to development and maintenance of neuropathic pain and to the worsening of clinical and biological signs of diabetes...
July 19, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28720324/synthesis-and-diabetic-neuropathic-pain-alleviating-effects-of-2n-pyrazol-3-yl-methylbenzo-d-isothiazole-1-1-dioxide-derivatives
#15
Jin Ri Hong, Young Jin Choi, Gyochang Keum, Ghilsoo Nam
A novel series of fused-benzensulfonamide 2-N-(pyrazol-3-yl)methylbenzo[d]isothiazole-1,1-dioxide derivatives was designed and synthesized as metabolically stable T-type calcium channel inhibitors. Several compounds, 9, 10, and 17, displayed potent T-type channel inhibitory activity. Among them, compounds 10 and 17 showed good metabolic stability in human liver microsomes, and low hERG channel and CYP450 inhibition. Compound 10 exhibited diabetic neuropathic pain-alleviating effects in a streptozotocin-induced peripheral diabetic neuropathy (PDN) model...
July 8, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28700700/the-induction-of-the-transcription-factor-nrf2-enhances-the-antinociceptive-effects-of-delta-opioid-receptors-in-diabetic-mice
#16
Christina McDonnell, Sergi Leánez, Olga Pol
The involvement of heme oxygenase 1 (HO-1) in the modulation of the antinociceptive effects of opioids in type 1 diabetes has been demonstrated but the role played by the transcription factor Nrf2 in the regulation of painful neuropathy and in the effects and expression of δ-opioid receptors (DOR) in type 2 diabetes, has not been studied. In male BKS.Cg-m+/+Leprdb/J (db/db) mice, the anti-allodynic effects produced by a Nrf2 transcription factor activator, sulforaphane (SFN) administered alone and combined with two DOR agonists, [d-Pen(2),d-Pen(5)]-Enkephalin (DPDPE) and (+)-4-[(αR)-α-((2S,5R)-4-Allyl-2,5-dimethyl-1-piperazinyl)-3-methoxybenzyl]-N,N diethylbenzamide (SNC-80), were evaluated...
2017: PloS One
https://www.readbyqxmd.com/read/28689961/pregabalin-reduces-cisplatin-induced-mechanical-allodynia-in-rats
#17
Yoshihiro Seto, Miyuki Takase, Yasuhiro Tsuji, Hideto To
Although cisplatin (CDDP) is a key drug in cancer chemotherapy, CDDP-induced peripheral neuropathy is a dose-limiting factor. We previously reported that CDDP-induced peripheral neuropathy, which progressed from allodynia to hypoalgesia, was ameliorated by the administration of CDDP to rats at a specific time. However, mechanical allodynia cannot be prevented therapeutically. Pregabalin (PGN) is used to suppress neuropathic pain from herpes zoster and diabetes. Therefore, we investigated the effects of PGN on CDDP-induced mechanical allodynia in rats...
June 20, 2017: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/28676788/a-systematic-review-of-treatment-of-painful-diabetic-neuropathy-by-pain-phenotype-versus-treatment-based-on-medical-comorbidities
#18
Luiz Clemente Rolim, Edina M Koga da Silva, João Roberto De Sá, Sérgio Atala Dib
BACKGROUND: Painful diabetic neuropathy (PDN) is a serious, polymorphic, and prevalent complication of diabetes mellitus. Most PDN treatment guidelines recommend a selection of drugs based on patient comorbidities. Despite the large numbers of medications available, most randomized clinical trials (RCTs) conducted so far have yielded unsatisfactory outcomes. Therefore, treatment may require a personalized approach based on pain phenotype or comorbidities. METHODS: To evaluate whether or not a patient's pain phenotype or comorbidities can influence the response to a specific PDN treatment, we conducted a systematic review using two different approaches: pain phenotype and associated comorbidities-based treatment...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28665460/ischemic-monomelic-neuropathy-a-long-term-follow-up-of-two-cases
#19
Vikas Singh, Huzaif Qaisar, Avais Masud, Sushil Mehandru, Elmer Sadiang-Abay, Eric J Costanzo, Loay Salman
INTRODUCTION: Ischemic monomelic neuropathy (IMN) is the most dreaded complication of an arteriovenous access creation. While uncommon, it can lead to pain, paresthesia or/and hand weakness. Creation of an arteriovenous connection causing a sudden diversion of blood away from the nerves can lead to ischemic injury to the neural tissue and cause IMN. Immediate surgical ligation has been traditionally recommended to limit ongoing neural tissue injury. CASE DESCRIPTION: We present two diabetic patients who developed IMN after the creation of a left upper extremity brachial-cephalic fistula and refused to undergo surgical ligation...
June 20, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28662295/%C3%AE-9-containing-nicotinic-acetylcholine-receptors-and-the-modulation-of-pain
#20
REVIEW
Arik J Hone, Denis Servent, J Michael McIntosh
Neuropathic pain is a complex and debilitating syndrome for which there are few effective pharmacological treatments. Opioid-based medications are initially effective for acute pain but tolerance to their analgesic effects quickly develops and long-term use often leads to physical dependence and addiction. Furthermore, neuropathic pain is generally resistant to non-steroidal anti-inflammatory drugs. Other classes of medications including antidepressants, antiepileptics, and voltage-gated calcium channel (VGCC) inhibitors are only partially effective in most patients, may be associated with significant side effects, and have few disease modifying effects on the underlying pathology...
June 29, 2017: British Journal of Pharmacology
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