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https://www.readbyqxmd.com/read/28499580/transient-receptor-potential-trp-channels-as-molecular-targets-in-lung-toxicology-and-associated-diseases
#1
REVIEW
Alexander Dietrich, Dirk Steinritz, Thomas Gudermann
The lungs as the gateways of our body to the external environment are essential for gas exchange. They are also exposed to toxicants from two sides, the airways and the vasculature. Apart from naturally produced toxic agents, millions of human made chemicals were produced since the beginning of the industrial revolution whose toxicity still needs to be determined. While the knowledge about toxic substances is increasing only slowly, a paradigm shift regarding the proposed mechanisms of toxicity at the plasma membrane emerged...
April 26, 2017: Cell Calcium
https://www.readbyqxmd.com/read/28499240/establishment-of-a-rat-model-of-chronic-prostatitis-chronic-pelvic-pain-syndrome-cp-cpps-induced-by-immunization-with-a-novel-peptide-t2
#2
Awais Ullah Ihsan, Farhan Ullah Khan, Waqas Nawaz, Muhammad Zahid Khan, Mengqi Yang, Xiaohui Zhou
BACKGROUND: The exact etiological mechanism of Chronic Prostatitis/chronic pelvic pain syndrome (CP/CPPS) is still unclear however autoimmunity is the most valid theory. We developed a rat model of Chronic Prostatitis/chronic pelvic pain syndrome by using a novel peptide (T2) isolated from TRPM8. This model might be beneficial in elucidating mechanisms involved in the pathogenesis of Chronic Prostatitis/Chronic Pelvic Pain Syndrome (CP/CPPS). METHODS: 40 male Sprague-Dawley rats with an average weight of 180-220g were equally distributed into five groups...
May 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28496415/inflammatory-effects-of-menthol-vs-non-menthol-cigarette-smoke-extract-on-human-lung-epithelial-cells-a-double-hit-on-trpm8-by-reactive-oxygen-species-and-menthol
#3
An-Hsuan Lin, Meng-Han Liu, Hsin-Kuo B Ko, Diahn-Warng Perng, Tzong-Shyuan Lee, Yu Ru Kou
Clinical studies suggest that smokers with chronic obstructive pulmonary disease who use menthol cigarettes may display more severe lung inflammation than those who smoke non-menthol cigarette. However, the mechanisms for this difference remain unclear. Menthol is a ligand of transient receptor potential melastatin-8 (TRPM8), a Ca(2+)-permeant channel sensitive to reactive oxygen species (ROS). We previously reported that exposure of human bronchial epithelial cells (HBECs) to non-menthol cigarette smoke extract (Non-M-CSE) triggers a cascade of inflammatory signaling leading to IL-8 induction...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28472061/sex-differences-in-mouse-transient-receptor-potential-cation-channel-subfamily-m-member-8-expressing-trigeminal-ganglion-neurons
#4
Robert M Caudle, Stephanie L Caudle, Alan C Jenkins, Andrew H Ahn, John K Neubert
The detection of cool temperatures is thought to be mediated by primary afferent neurons that express the cool temperature sensing protein Transient Receptor Potential Cation Channel, Subfamily M, Member 8 (TRPM8). Using mice, this study tested the hypothesis that sex differences in sensitivity to cool temperatures were mediated by differences in neurons that express TRPM8. Ion currents from TRPM8 expressing trigeminal ganglion (TRG) neurons in females demonstrated larger hyperpolarization-activated cyclic nucleotide-gated currents (Ih) than male neurons at both 30° and 18°C...
2017: PloS One
https://www.readbyqxmd.com/read/28440188/trp-channels-as-novel-targets-for-endogenous-ligands-focus-on-endocannabinoids-and-nociceptive-signalling
#5
Maksim V Storozhuk, Alexander V Zholos
The endocannabinoid system is gaining steadily increasing research interest as its important role in the regulation of many fundamental physiological processes becomes more and more evident. One area which received particularly significant attention concerns targeting the endocannabinoid system as a useful strategy in pain control, especially in refractory, difficult to treat cases of chronic pain. Apart from the classical targets of cannabinoids, the CB1 and CB2 receptors, several members of the large TRP family of Ca2+-permeable cation channels have been designated as "ionotropic cannabinoid receptors" to highlight their role in cannabinoid signalling...
April 24, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28433438/analgesic-effects-of-transcutaneous-ultrasound-nerve-stimulation-in-a-rat-model-of-oxaliplatin-induced-mechanical-hyperalgesia-and-cold-allodynia
#6
Yueh-Ling Hsieh, Han-Yu Chen, Ching-Hsiang Yang, Chen-Chia Yang
This study investigated the effects and underlying mechanisms of therapeutic ultrasound (TUS) in a rat model of oxaliplatin-induced peripheral neuropathy. Animals received a total of eight injections with oxaliplatin (4 mg/kg), administered at 3-d intervals. TUS intervention (1 MHz, 0.5 W/cm(2)) started on the fifth oxaliplatin administration and continued for 10 consecutive d. Sensory behavioral examinations, protein levels of transient receptor potential channels (TRPM8 and TRPV1) in dorsal root ganglia (DRG) and substance P (SP) in spinal dorsal horn were examined...
April 19, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28416581/trp-channels-in-brown-and-white-adipogenesis-from-human-progenitors-new-therapeutic-targets-and-the-caveats-associated-with-the-common-antibiotic-streptomycin
#7
Anna Goralczyk, Marc van Vijven, Mathilde Koch, Cedric Badowski, M Shabeer Yassin, Sue-Anne Toh, Asim Shabbir, Alfredo Franco-Obregón, Michael Raghunath
Transient receptor potential (TRP) channels are polymodal cell sensors responding to diverse stimuli and widely implicated in the developmental programs of numerous tissues. The evidence for an involvement of TRP family members in adipogenesis, however, is scant. We present the first comprehensive expression profile of all known 27 human TRP genes in mesenchymal progenitors cells during white or brown adipogenesis. Using positive trilineage differentiation as an exclusion criterion, TRP polycystic (P)3, and TPR melastatin (M)8 were found to be uniquely adipospecific...
April 17, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28412531/vagus-nerve-is-involved-in-the-changes-in-body-temperature-induced-by-intragastric-administration-of-1-8-cineole-via-trpm8-in-mice
#8
Tomomi Urata, Noriyuki Mori, Tsutomu Fukuwatari
Transient Receptor Potential Melastatin 8 (TRPM8) is a cold receptor activated by mild cold temperature (<28°C). TRPM8 expressed in cutaneous sensory nerves is involved in cold sensation and thermoregulation. TRPM8 mRNA is detected in various tissues, including the gastrointestinal mucosa, and in the vagal afferent nerve. The relationship between vagal afferent nerve-specific expression of TRPM8 and thermoregulation remains unclear. In this study, we aimed to investigate whether TRPM8 expression in the vagal afferent nerve is involved in autonomic thermoregulation...
April 12, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28408328/trpa1-expression-levels-and-excitability-brake-by-kv-channels-influence-cold-sensitivity-of-trpa1-expressing-neurons
#9
Tosifa Memon, Kevin Chase, Lee S Leavitt, Baldomero M Olivera, Russell W Teichert
The molecular sensor of innocuous (painless) cold sensation is well-established to be transient receptor potential cation channel, subfamily M, member 8 (TRPM8). However, the role of transient receptor potential cation channel, subfamily A, member 1 (TRPA1) in noxious (painful) cold sensation has been controversial. We find that TRPA1 channels contribute to the noxious cold sensitivity of mouse somatosensory neurons, independent of TRPM8 channels, and that TRPA1-expressing neurons are largely non-overlapping with TRPM8-expressing neurons in mouse dorsal-root ganglia (DRG)...
April 10, 2017: Neuroscience
https://www.readbyqxmd.com/read/28396565/a-clinical-and-mechanistic-study-of-topical-borneol-induced-analgesia
#10
Shu Wang, Dan Zhang, Jinsheng Hu, Qi Jia, Wei Xu, Deyuan Su, Hualing Song, Zhichun Xu, Jianmin Cui, Ming Zhou, Jian Yang, Jianru Xiao
Bingpian is a time-honored herb in traditional Chinese medicine (TCM). It is an almost pure chemical with a chemical composition of (+)-borneol and has been historically used as a topical analgesic for millennia. However, the clinical efficacy of topical borneol lacks stringent evidence-based clinical studies and verifiable scientific mechanism. We examined the analgesic efficacy of topical borneol in a randomized, double-blind, placebo-controlled clinical study involving 122 patients with postoperative pain...
April 10, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28385695/transient-receptor-potential-ion-channel-function-in-sensory-transduction-and-cellular-signaling-cascades-underlying-visceral-hypersensitivity
#11
Dafne Balemans, Guy E Boeckxstaens, Karel Talavera, Mira M Wouters
Visceral hypersensitivity is an important mechanism underlying increased abdominal pain perception in functional gastrointestinal disorders (FGID) including functional dyspepsia, irritable bowel syndrome (IBS) and inflammatory bowel disease in remission. Although the exact pathophysiological mechanisms are poorly understood, recent studies described upregulation and altered functions of nociceptors and their signaling pathways in aberrant visceral nociception, in particular the transient receptor potential (TRP) channel family...
April 6, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28381446/cutaneous-trpm8-expressing-sensory-afferents-are-a-small-population-of-neurons-with-unique-firing-properties
#12
Michael P Jankowski, Kristofer K Rau, H Richard Koerber
It has been well documented that the transient receptor potential melastatin 8 (TRPM8) receptor is involved in environmental cold detection. The role that this receptor plays in nociception however, has been somewhat controversial since conflicting reports have shown different neurochemical identities and responsiveness of TRPM8 neurons. In order to functionally characterize cutaneous TRMP8 fibers, we used two ex vivo somatosensory recording preparations to functionally characterize TRPM8 neurons that innervate the hairy skin in mice genetically engineered to express GFP from the TRPM8 locus...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28358322/development-of-trpm8-antagonists-to-treat-chronic-pain-and-migraine
#13
REVIEW
Andy D Weyer, Sonya G Lehto
A review. Development of pharmaceutical antagonists of transient receptor potential melastatin 8 (TRPM8) have been pursued for the treatment of chronic pain and migraine. This review focuses on the current state of this progress.
March 30, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/28332601/trpm8-in-the-negative-regulation-of-tnf%C3%AE-expression-during-cold-stress
#14
Xin-Pei Wang, Xuan Yu, Xiao-Jin Yan, Fan Lei, Yu-Shuang Chai, Jing-Fei Jiang, Zhi-Yi Yuan, Dong-Ming Xing, Li-Jun Du
Transient Receptor Potential Melastatin-8 (TRPM8) reportedly plays a fundamental role in a variety of processes including cold sensation, thermoregulation, pain transduction and tumorigenesis. However, the role of TRPM8 in inflammation under cold conditions is not well known. Since cooling allows the convergence of primary injury and injury-induced inflammation, we hypothesized that the mechanism of the protective effects of cooling might be related to TRPM8. We therefore investigated the involvement of TRPM8 activation in the regulation of inflammatory cytokines...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28325835/picomolar-selective-and-subtype-specific-small-molecule-inhibition-of-trpc1-4-5-channels
#15
Hussein N Rubaiy, Melanie J Ludlow, Matthias Henrot, Hannah J Gaunt, Katarina Miteva, Sin Yin Cheung, Yasuyuki Tanahashi, Nurasyikin Hamzah, Katie E Musialowski, Nicola M Blythe, Hollie L Appleby, Marc A Bailey, Lynn McKeown, Roger Taylor, Richard Foster, Herbert Waldmann, Peter Nussbaumer, Mathias Christmann, Robin S Bon, Katsuhiko Muraki, David J Beech
The concentration of free cytosolic Ca(2+) and the voltage across the plasma membrane are major determinants of cell function. Ca(2+)-permeable non-selective cationic channels are known to regulate these parameters but understanding of these channels remains inadequate. Here we focus on Transient Receptor Potential Canonical 4 and 5 proteins (TRPC4 and TRPC5) which assemble as homomers or heteromerize with TRPC1 to form Ca(2+)-permeable non-selective cationic channels in many mammalian cell types. Multiple roles have been suggested including in epilepsy, innate fear, pain and cardiac remodeling but limitations in tools to probe these channels have restricted progress...
March 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28255167/toluene-diisocyanate-exposure-induces-airway-inflammation-of-bronchial-epithelial-cells-via-the-activation-of-transient-receptor-potential-melastatin-8
#16
Joo-Hee Kim, Young-Sook Jang, Seung-Hun Jang, Ki-Suck Jung, Seung-Hyun Kim, Young-Min Ye, Hae-Sim Park
Toluene diisocyanate (TDI) is the most important cause of occupational asthma (OA), and various pathogenic mechanisms have been suggested. Of these mechanisms, neurogenic inflammation is an important inducer of airway inflammation. Transient receptor potential melastatin 8 (TRPM8) is a well-established cold-sensing cation channel that is expressed in both neuronal cells and bronchial epithelial cells. A recent genome-wide association study of TDI-exposed workers found a significant association between the phenotype of TDI-induced OA and the single-nucleotide polymorphism rs10803666, which has been mapped to the TRPM8 gene...
March 3, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28240768/transient-receptor-potential-cation-channel-subfamily-m-member-8-channels-mediate-the-anti-inflammatory-effects-of-eucalyptol
#17
Ana I Caceres, Boyi Liu, Sairam V Jabba, Satyanarayana Achanta, John B Morris, Sven-Eric Jordt
BACKGROUND AND PURPOSE: Eucalyptol (1,8-cineol), the major ingredient in the essential oil of eucalyptus leaves and other medicinal plants, has long been known for its anti-inflammatory properties. Eucalyptol interacts with the TRP cation channels among other targets, but it is unclear which of these mediates its anti-inflammatory effects. EXPERIMENTAL APPROACH: Effects of eucalyptol were compared in wild-type and TRPM8 channel-deficient mice in two different models: footpad inflammation elicited by complete Freund's adjuvant (CFA) and pulmonary inflammation following administration of LPS...
May 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28238800/activation-of-the-cold-receptor-trpm8-by-low-levels-of-menthol-in-tobacco-products
#18
Meike Paschke, Anna Tkachenko, Katja Ackermann, Christoph Hutzler, Frank Henkler, Andreas Luch
Activation of the cold-receptor TRPM8 by menthol or other tobacco additives can suppress natural defense reactions such as coughing that usually would become effective as involuntary resistance against the inhalation of fumes. In Europe menthol is only regulated as flavor, but can be used as additive as long as no characteristic mint-like aroma will become noticeable in the end-product tobacco. The question needs to be addressed of whether such comparatively minor contents would be sufficient to trigger a measurable activation of TRPM8...
April 5, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28225032/4-isopropylcyclohexanol-has-potential-analgesic-effects-through-the-inhibition-of-anoctamin-1-trpv1-and-trpa1-channel-activities
#19
Yasunori Takayama, Hidemasa Furue, Makoto Tominaga
Interactions between calcium-activated chloride channel anoctamin 1 (ANO1) and transient receptor potential vanilloid 1 (TRPV1) enhance pain sensations in mice, suggesting that ANO1 inhibition could have analgesic effects. Here we show that menthol and the menthol analogue isopropylcyclohexane (iPr-CyH) inhibited ANO1 channels in mice. The iPr-CyH derivative 4-isopropylcyclohexanol (4-iPr-CyH-OH) inhibited mouse ANO1 currents more potently than iPr-CyH. Moreover, 4-iPr-CyH-OH inhibited the activities of TRPV1, TRP ankyrin 1 (TRPA1), TRP melastatin 8 (TRPM8) and TRPV4...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28213106/oral-treatment-with-essential-oil-of-hyptis-spicigera-lam-lamiaceae-reduces-acute-pain-and-inflammation-in-mice-potential-interactions-with-transient-receptor-potential-trp-ion-channels
#20
Róli Rodrigues Simões, Igor Dos Santos Coelho, Stella Célio Junqueira, Glauce Regina Pigatto, Marcos José Salvador, Adair Roberto Soares Santos, Felipe Meira de Faria
ETHNOPHARMACOLOGICAL RELEVANCE: The genus Hyptis comprehends almost 400 species widespread in tropical and temperate regions of America. The use of Hyptis spicigera Lam. (Lamiaceae) is reported in traditional medicine due to its gastroprotective, anti-inflammatory and analgesic properties. AIM OF THE STUDY: The rationale of this study was to investigate the potential use of the essential oil of H. spicigera (EOHs) as analgesic. MATERIAL AND METHODS: The antinociceptive effect of EOHs was verified analyzing acute nocifensive behavior of mice induced by chemical noxious stimuli [i...
March 22, 2017: Journal of Ethnopharmacology
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