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Novel Nanotechnological Approaches for Targeting Dorsal Root Ganglion (DRG) in Mitigating Diabetic Neuropathic Pain (DNP)
Diabetic neuropathy is the most entrenched complication of diabetes. Usually, it affects the distal foot and toes, which then gradually approaches the lower part of the legs. Diabetic foot ulcer (DFU) could be one of the worst complications of diabetes mellitus. Long-term diabetes leads to hyperglycemia, which is the utmost contributor to neuropathic pain. Hyperglycemia causing an upregulation of voltage-gated sodium channels in the dorsal root ganglion (DRG) was often observed in models of neuropathic pain. DRG opening frequency increases intracellular sodium ion levels, which further causes increased calcium channel open...
Source: Frontiers in Endocrinology - February 8, 2022 Category: Endocrinology Source Type: research

Modulation of NR1 receptor by CaMKII α plays an important role in chronic itch development in mice.
Modulation of NR1 receptor by CaMKIIα plays an important role in chronic itch development in mice. Brain Res Bull. 2020 Feb 26;: Authors: Li NQ, Tang Y, Huang ST, Liu XT, Zeng LP, Li H, Wan L Abstract Intractable scratching is the characteristic of chronic itch, which represents a great challenge in clinical practice. However, the mechanism underlying chronic itch development is largely unknown. In the present study, we investigated the role of NMDA receptor in acute itch and in development of chronic itch. A mouse model was developed by painting DNFB to induce allergic contact dermatitis (ACD). We f...
Source: Brain Research Bulletin - February 25, 2020 Category: Neurology Authors: Li NQ, Tang Y, Huang ST, Liu XT, Zeng LP, Li H, Wan L Tags: Brain Res Bull Source Type: research

Knockdown siRNA Targeting the Mitochondrial Sodium-Calcium Exchanger-1 Inhibits the Protective Effects of Two Cannabinoids Against Acute Paclitaxel Toxicity
AbstractTreatment with cannabidiol (CBD) or KLS-13019 (novel CBD analog), has previously been shown to prevent paclitaxel-induced mechanical allodynia in a mouse model of chemotherapy-induced peripheral neuropathy (CIPN). The mechanism of action for CBD- and KLS-13019-mediated protection now has been explored with dissociated dorsal root ganglion (DRG) cultures using small interfering RNA (siRNA) to the mitochondrial Na+ Ca2+ exchanger-1 (mNCX-1). Treatment with this siRNA produced a 50 –55% decrease in the immunoreactive (IR) area for mNCX-1 in neuronal cell bodies and a 72–80% decrease in neuritic IR area as determin...
Source: Journal of Molecular Neuroscience - May 9, 2019 Category: Neuroscience Source Type: research

Recent Advances in the Development of T ‐type Calcium Channel Blockers for Pain Intervention
Abstract Cav3.2 T‐type calcium channels are important regulators of pain signals in afferent pain pathway, and their activities are dysregulated during various chronic pain states. Therefore it stands to reason that inhibiting T‐type calcium channels in dorsal root ganglion neurons and in the spinal dorsal horn can be targeted for pain relief. This is supported by early pharmacological studies with T‐type channel blockers such as ethosuximide, and by analgesic effects of siRNA depletion of Cav3.2 channels. In the past five years, considerable effort has been applied towards identifying novel classes of T‐type calci...
Source: British Journal of Pharmacology - June 13, 2017 Category: Drugs & Pharmacology Authors: Terrance P Snutch, Gerald W Zamponi Tags: REVIEW ARTICLE THEMED ISSUE Source Type: research

Neuronal Fc-epsilon receptor I contributes to antigen-evoked pruritus in a murine model of ocular allergy.
This study may suggest a novel mechanism for the development of pathological itch in allergic diseases. PMID: 27865948 [PubMed - as supplied by publisher]
Source: Brain, Behavior, and Immunity - November 15, 2016 Category: Neurology Authors: Liu F, Xu L, Chen N, Zhou M, Li C, Yang Q, Xie Y, Huang Y, Ma C Tags: Brain Behav Immun Source Type: research

Neuronal Fc-epsilon receptor I contributes to antigen-evoked pruritus in a murine model of ocular allergy
This study may suggest a novel mechanism for the development of pathological itch in allergic diseases.
Source: Brain, Behavior, and Immunity - November 15, 2016 Category: Neurology Source Type: research

Synaptic vesicle glycoprotein 2A modulates vesicular release and calcium channel function at peripheral sympathetic synapses
Abstract Synaptic vesicle glycoprotein (SV)2A is a transmembrane protein found in secretory vesicles and is critical for Ca2+‐dependent exocytosis in central neurons, although its mechanism of action remains uncertain. Previous studies have proposed, variously, a role of SV2 in the maintenance and formation of the readily releasable pool (RRP) or in the regulation of Ca2+ responsiveness of primed vesicles. Such previous studies have typically used genetic approaches to ablate SV2 levels; here, we used a strategy involving small interference RNA (siRNA) injection to knockdown solely presynaptic SV2A levels in rat superior...
Source: European Journal of Neuroscience - November 1, 2014 Category: Neuroscience Authors: Christian Vogl, Shota Tanifuji, Benedicte Danis, Veronique Daniels, Patrik Foerch, Christian Wolff, Benjamin J. Whalley, Sumiko Mochida, Gary J. Stephens Tags: Research Report Source Type: research