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https://www.readbyqxmd.com/read/28326925/interaction-of-acupuncture-treatment-and-manipulation-laterality-modulated-by-the-default-mode-network
#1
Xuan Niu, Ming Zhang, Zhenyu Liu, Lijun Bai, Chuanzhu Sun, Shan Wang, Xiaocui Wang, Zhen Chen, Hongyan Chen, Jie Tian
Appropriate selection of ipsilateral or contralateral electroacupuncture (corresponding to the pain site) plays an important role in reaching its better curative effect; however, the involving brain mechanism still remains unclear. Compared with the heat pain model generally established in previous study, capsaicin pain model induces reversible cutaneous allodynia and is proved to be better simulating aspects of clinical nociceptive and neuropathic pain. In the current study, 24 subjects were randomly divided into two groups with a 2 × 2 factorial design: laterality (ipsi- or contralateral side, inter-subject) × treatment with counter-balanced at an interval of one week (verum and placebo electroacupuncture, within-subject)...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28326459/preparation-and-evaluation-of-plga-coated-capsaicin-magnetic-nanoparticles
#2
Mrudhula Baskaran, Padmamalini Baskaran, Navamoney Arulsamy, Baskaran Thyagarajan
PURPOSE: Drugs used in the treatment of diseases can cause several unwanted systemic side effects. A site-specific drug delivery system can eliminate such consequences by delivering drugs to certain target areas of the body where therapeutic effects are required. Here we present the preparation and evaluation of magnetic nanoparticles of capsaicin, the active ingredient in chili peppers, coated with poly-L-lactide co-glycolide (PLGA), a FDA-approved biodegradable bioavailable polymer...
March 21, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28324760/trpv1-agonism-inhibits-endothelial-cell-inflammation-via-activation-of-enos-no-pathway
#3
Youping Wang, Lin Cui, Hui Xu, Suxiao Liu, Feiyun Zhu, Fengna Yan, Si Shen, Mingjun Zhu
BACKGROUND AND AIMS: Transient receptor potential vanilloid type 1 channel (TRPV1) is found to be expressed in endothelial cells (ECs) and activate endothelial nitric oxide synthase (eNOS). Recent studies implicate TRPV1 in attenuating inflammatory responses. However, the mechanisms underlying the beneficial effects remain unclear. In this study, we investigated whether TRPV1 suppresses inflammatory responses of ECs via eNOS/NO pathway. METHODS: Human umbilical vein endothelial cells (HUVECs) and renal microvascular endothelial cells (MVECs) isolated from deoxycorticosterone (DOCA)-salt hypertensive mice were cultured in the presence of capsaicin (CAP, a specific TRPV1 agonist) with or without the specific inhibitor of TRPV1, NOS, or Ca(2+)-dependent phosphatidylinositol 3-kinase (PI3K)/Akt pathway, before lipopolysaccharide (LPS) stimulation...
March 10, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28324649/sulfonamides-as-selective-nav1-7-inhibitors-optimizing-potency-pharmacokinetics-and-metabolic-properties-to-obtain-atropisomeric-quinolinone-am-0466-that-affords-robust-in-vivo-activity
#4
Russell F Graceffa, Alessandro A Boezio, Jessica Able, Steven Altmann, Loren M Berry, Christiane M Boezio, John R Butler, Margaret Y Chu-Moyer, Melanie Cooke, Erin F DiMauro, Thomas A Dineen, Elma Feric Bojic, Robert S Foti, Robert T Fremeau, Angel Guzman-Perez, Hua Gao, Hakan Gunaydin, Hongbing Huang, Liyue Huang, Christopher Ilch, Michael Jarosh, Thomas Kornecook, Charles R Kreiman, Daniel S La, Joseph Ligutti, Benjamin Charles Milgram, Min-Hwa Jasmine Lin, Isaac E Marx, Hanh Nho Nguyen, Emily A Peterson, Gwen Rescourio, John Roberts, Laurie B Schenkel, Roman Shimanovich, Brian Andrew Sparling, John Stellwagen, Kristin Taborn, Karina R Vaida, Jean Wang, John T S Yeoman, Violeta L Yu, Dawn Zhu, Bryan D Moyer, Matthew M Weiss
Due to its strong genetic validation, NaV1.7 has attracted significant interest as a target for the treatment of pain. We have previously reported on a number of structurally distinct bicyclic heteroarylsulfonamides as NaV1.7 inhibitors that demonstrate high levels of selectivity over other NaV isoforms. Herein, we report the discovery and optimization of a novel series of atropisomeric quinolinone sulfonamide inhibitors of NaV1.7, which demonstrate nanomolar inhibition of NaV1.7 and exhibit high levels of selectivity over other sodium channel isoforms...
March 21, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28322839/derivatives-of-furanditerpenes-from-pterodon-genus-pharmacological-studies-disclose-their-potential-as-chronic-pain-relief-in-mice
#5
Humberto M Spindola, Rogério Grando, Mariana C Figueiredo, Rosana Basting, N C A Queiroz, Ângelo de Fátima, João E de Carvalho, Zaijie J Wang, M A Foglio
Pterodon genus fruits are commercially available at the Brazilian medicinal market used in folk medicine due to their anti-inflammatory, analgesic, and anti-rheumatic effects. Previous studies demonstrated that furanditerpenes possessing vouacapan skeleton, isolated from Pterodon genus, possess expressive antinociceptive activities, with promising moiety for the development of new analgesic products. The antinociceptive properties of compounds 6α,7β- 6α-hidroxivouacapan-7β-17β-lactone (HVL) and 6α-oxovouacapan-7β-17β-lactone (OVL), semi-synthetic analogues of furanditerpenes previously reported as analgesic agents were evaluated on animal experimental models (Spindola et al...
March 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28321335/quantitative-thermal-testing-profiles-as-a-predictor-of-treatment-response-to-topical-capsaicin-in-patients-with-localized-neuropathic-pain
#6
A Serrano, D Torres, M Veciana, C Caro, J Montero, V Mayoral
There are no reliable predictors of response to treatment with capsaicin. Given that capsaicin application causes heat sensation, differences in quantitative thermal testing (QTT) profiles may predict treatment response. The aim of this study was to determine whether different QTT profiles could predict treatment outcomes in patients with localized peripheral neuropathic pain (PeLNP). We obtained from medical records QTT results and treatment outcomes of 55 patients treated between 2010 and 2013. Warm sensation threshold (WST) and heat pain threshold (HPT) values were assessed at baseline at the treatment site and in the asymptomatic, contralateral area...
2017: Pain Research and Treatment
https://www.readbyqxmd.com/read/28319947/effects-of-capsaicin-on-older-patients-with-oropharyngeal-dysphagia-a-double-blind-placebo-controlled-crossover-study
#7
Rui Nakato, Noriaki Manabe, Sayako Shimizu, Kozo Hanayama, Akiko Shiotani, Jiro Hata, Ken Haruma
BACKGROUND/AIMS: The standard of care for older patients with oropharyngeal dysphagia (OD) is poor. Stimulation of transient receptor potential vanilloid 1 might become a pharmacological strategy for these patients. This study aimed to compare the therapeutic effect of film food containing 0.75 µg of capsaicin in these patients. METHODS: In a crossover, randomized trial, 49 patients with OD were provided capsaicin or identical placebo at least 7 days apart. Patients' reported symptoms during repeated swallowing, the volume, pH and substance P (SP) concentrations in saliva, and cervical esophageal wall motion evaluated by ultrasonographic tissue Doppler imaging were obtained before and after capsaicin or placebo administration...
March 21, 2017: Digestion
https://www.readbyqxmd.com/read/28317708/sensitive-determination-of-capsaicin-in-pepper-samples-using-a-voltammetric-platform-based-on-carbon-nanotubes-and-ruthenium-nanoparticles
#8
Aysegul Kutluay Baytak, Mehmet Aslanoglu
A voltammetric platform based on modifying glassy carbon electrodes (GCEs) with ruthenium nanoparticles decorated carbon nanotubes (CNTs) was applied for the determination of capsaicin in pepper samples. The nanoparticles of ruthenium (RuNPs) were obtained at carbon nanotubes modified GCE by cyclic voltammetry. The composite of RuNPs-CNTs was characterized by scanning electron microscopy (SEM) and energy dispersive X-ray (EDX). The proposed voltammetric platform, RuNPs/CNTs/GCE, highly improved the voltammetric process of capsaicin in comparison to the CNTs/GCE and bare GCE...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28317313/profiling-of-antioxidative-enzyme-expression-induced-by-various-food-components-using-targeted-proteome-analysis
#9
Sven Bartenbacher, Christiane Östreicher, Monika Pischetsrieder
SCOPE: A method was developed for targeted proteome analysis of the expression profile of a set of antioxidative enzymes in rat macrophages and applied to screen the antioxidative potential of several food components/foods. METHODS AND RESULTS: Expression profiles of heme oxygenase 1, peroxiredoxin 1, thioredoxin reductase 1, glutathione reductase, glutathione-S transferase P1, and superoxide dismutase 1 were analyzed by nanoLC-MS/MS in selected scheduled reaction monitoring (sSRM) mode monitoring 2-3 peptides per protein and 3 transitions per peptide...
March 20, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28315477/magnetic-but-not-non-magnetic-reduced-graphene-oxide-in-spinal-cord-increases-nociceptive-neuronal-responsiveness
#10
Luis Paulo Manzo, Helder Ceragioli, Ivan José Bonet, Catarine Massucato Nishijima, Willians Fernando Vieira, Elaine Conceição Oliveira, João-Batista Destro-Filho, César Renato Sartori, Claudia Herrera Tambeli, Carlos Amilcar Parada
The interference between external magnetic fields and neurophysiology is not new, however, the role of the neuronal magnetic field remains unclear. This study aimed at investigating a possible role of the neuronal magnetic field in nociception. Highly and poorly magnetic reduced graphene oxide (rGO) were injected intrathecally in rats. Nociceptive responsiveness was greater in rats that received highly magnetic-rGO in von Frey electronic or intraplantar capsaicin tests. Furthermore, in vitro experiments demonstrated that the number of KCl-responsive DRG-neurons was greater when treated with highly magnetic-rGO when compared with non-magnetic-rGO...
March 14, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28314510/t-butyl-pyridine-and-phenyl-c-region-analogues-of-2-3-fluoro-4-methylsulfonylaminophenyl-propanamides-as-potent-trpv1-antagonists
#11
Sunho Lee, Dong Wook Kang, HyungChul Ryu, Changhoon Kim, Jihyae Ann, Hobin Lee, Eunhye Kim, Sunhye Hong, Sun Choi, Peter M Blumberg, Robert Frank-Foltyn, Gregor Bahrenberg, Hannelore Stockhausen, Thomas Christoph, Jeewoo Lee
A series of 2-substituted 6-t-butylpyridine and 4-t-butylphenyl C-region analogues of 2-(3-fluoro-4-methylsulfonamidophenyl)propanamides were investigated for hTRPV1 antagonism. The analysis of structure activity relationships indicated that the pyridine derivatives generally exhibited a little better antagonism than did the corresponding phenyl surrogates for most of the series. Among the compounds, compound 7 showed excellent antagonism toward capsaicin activation with Ki=0.1nM and compound 60S demonstrated a strong antiallodynic effect with 83% MPE at 10mg/kg in the neuropathic pain model...
March 6, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28295390/mechanically-sensitive-a%C3%AE-nociceptors-that-innervate-bone-marrow-respond-to-changes-in-intra-osseous-pressure
#12
Sara Nencini, Jason Ivanusic
Whilst the sensory neurons and nerve terminals that innervate bone marrow have a morphology and molecular phenotype consistent with a role in nociception, little is known about their physiology or the mechanisms that generate and maintain bone pain. In the present study, we provide evidence that Aδ nociceptors that innervate the bone marrow respond to high threshold noxious mechanical stimulation, exhibit fatigue in response to prior stimulation, and in some cases can be sensitized by capsaicin. They can be classified on the basis of their response properties as either phasic-tonic units that appear to code for different intensities of intra-osseous pressure, or phasic units that code for the rate of change in intra-osseous pressure...
March 15, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28294062/warming-up-to-new-possibilities-with-the-capsaicin-receptor-trpv1-mtor-ampk-and-erythropoietin
#13
Kenneth Maiese
BACKGROUND: Transient receptor potential (TRP) channels are a superfamily of ion channels termed after the trp gene in Drosophila that are diverse in structure and control a wide range of biological functions including cell development and growth, thermal regulation, and vascular physiology. Of significant interest is the transient receptor potential cation channel subfamily V member 1 (TRPV1) receptor, also known as the capsaicin receptor and the vanilloid receptor 1, that is a non-selective cation channel sensitive to a host of external stimuli including capsaicin and camphor, venoms, acid/basic pH changes, and temperature...
March 13, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28291541/evidence-for-a-novel-neurohumoral-antinociceptive-mechanism-mediated-by-peripheral-capsaicin-sensitive-nociceptors-in-conscious-rats
#14
Gábor Pethő, Kata Bölcskei, Réka Füredi, Bálint Botz, Teréz Bagoly, Erika Pintér, János Szolcsányi
Stimulation of capsaicin-sensitive peripheral sensory nerve terminals induces remote anti-inflammatory effects throughout the body of anesthetized rats and guinea-pigs mediated by somatostatin. As somatostatin has also antinociceptive effects, the study aimed at investigating whether similar remote antinociceptive effects can be demonstrated in awake animals. In conscious rats, nociceptive nerve endings of the right hind paw decentralized by cutting the sciatic and saphenous nerves 18h before were chemically stimulated, and drop of the noxious heat threshold (heat hyperalgesia) induced by prior (18h before) plantar incision was measured on the contralateral, left hind paw using an increasing-temperature water bath...
February 10, 2017: Neuropeptides
https://www.readbyqxmd.com/read/28289986/topical-botanical-agents-for-the-treatment-of-psoriasis-a-systematic-review
#15
REVIEW
Benjamin Farahnik, Divya Sharma, Joseph Alban, Raja K Sivamani
BACKGROUND: Patients with psoriasis often enquire about the use of numerous botanical therapeutics. It is important for dermatologists to be aware of the current evidence regarding these agents. METHODS: We conducted a systematic literature search using the PubMed, MEDLINE, and EMBASE databases for controlled and uncontrolled clinical trials that assessed the use of topical botanical therapeutics for psoriasis. The search included the following keywords: 'psoriasis' and 'plant' or 'herbal' or 'botanical'...
March 13, 2017: American Journal of Clinical Dermatology
https://www.readbyqxmd.com/read/28285487/load-carriage-related-paresthesias-part-2-meralgia-paresthetica
#16
Joseph J Knapik, Katy Reynolds, Robin Orr, Rodney Pope
This is the second of a two-part series addressing symptoms, evaluation, and treatment of load carriage- related paresthesias. Part 1 addressed rucksack palsy and digitalgia paresthetica; here, meralgia paresthetica (MP) is discussed. MP is a mononeuropathy involving the lateral femoral cutaneous nerve (LFCN). MP has been reported in load carriage situations where the LFCN was compressed by rucksack hipbelts, pistol belts, parachute harnesses, and body armor. In the US military, the rate of MP is 6.2 cases/10,000 personyears...
2017: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
https://www.readbyqxmd.com/read/28281854/capsaicin-pretreatment-reversed-pulmonary-arterial-hypertension-by-alleviating-inflammation-via-p38mapk-pathway
#17
Ying Xu, Qin Gu, Chen Qu
Purpose/aim: Pulmonary arterial hypertension (PAH) is a lethal disease associated with pulmonary vascular remodeling as well as inflammation. As a kind of tachykinin secreted by nerves and inflammatory cells, substance P (SP) has been proved to be involved in the progression of PAH. Capsaicin can deplete substance P and provide benefits in PAH. However, the mechanism is still unclear. In this article, we aim to illustrate the possible mechanism involved in the process of capsaicin alleviating PAH. MATERIALS AND METHODS: A single injection of monocrotaline (MCT) to male Sprague-Dawley (SD) rats was conducted to induce PAH...
March 10, 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/28280490/anti-obesity-effect-of-capsaicin-in-mice-fed-with-high-fat-diet-is-associated-with-an-increase-in-population-of-the-gut-bacterium-akkermansia-muciniphila
#18
Wei Shen, Mengyu Shen, Xia Zhao, Hongbin Zhu, Yuhui Yang, Shuguang Lu, Yinling Tan, Gang Li, Ming Li, Jing Wang, Fuquan Hu, Shuai Le
Capsaicin (CAP) reduces body weight mainly through activation of transient receptor potential vanilloid 1 (TRPV1) cation channel. However, recent evidence indicates that the gut microbiota influences many physiological processes in host and might provoke obesity. This study determined whether the anti-obesity effect of CAP is related to the changes in gut microbiota. C57BL/6 mice were fed either with high-fat diet (HFD) or HFD with CAP (HFD-CAP) for 9 weeks. We observed a significantly reduced weight gain and improved glucose tolerance in HFD-CAP-fed mice compared with HFD-fed mice...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28280381/topical-phenytoin-for-the-treatment-of-neuropathic-pain
#19
David J Kopsky, Jan M Keppel Hesselink
We developed and tested a new putative analgesic cream, based on the anticonvulsant phenytoin in patients suffering from treatment refractory neuropathic pain. The use of commercial topical analgesics is not widespread due to the facts that capsaicin creams or patches can give rise to side effects, such as burning, and analgesic patches (e.g., lidocaine 5% patches) have complex handling, especially for geriatric patients. Only in a few countries, compounded creams based on tricyclic antidepressants or other (co-)analgesics are available...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28273917/alleviation-of-microglial-activation-induced-by-p38-mapk-mk2-pge2-axis-by-capsaicin-potential-involvement-of-other-than-trpv1-mechanism-s
#20
Harsharan S Bhatia, Nora Roelofs, Eduardo Muñoz, Bernd L Fiebich
Exaggerated inflammatory responses in microglia represent one of the major risk factors for various central nervous system's (CNS) associated pathologies. Release of excessive inflammatory mediators such as prostaglandins and cytokines are the hallmark of hyper-activated microglia. Here we have investigated the hitherto unknown effects of capsaicin (cap) - a transient receptor potential vanilloid 1 (TRPV1) agonist- in murine primary microglia, organotypic hippocampal slice cultures (OHSCs) and human primary monocytes...
December 2017: Scientific Reports
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