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Neurogenic inflammation

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https://www.readbyqxmd.com/read/27915472/pathomechanism-of-interstitial-cystitis-bladder-pain-syndrome-and-mapping-the-heterogeneity-of-disease
#1
REVIEW
Jia-Fong Jhang, Hann-Chorng Kuo
Interstitial cystitis/bladder pain syndrome (IC/BPS) is a heterogeneous syndrome which is usually characterized by urinary frequency, nocturia, and bladder pain. Several pathomechanisms have been proposed, including uroepithelial dysfunction, mast cell activation, neurogenic inflammation, autoimmunity, and occult urinary tract infections. It is possible that an inflammatory process alters regulation of urothelial homeostasis and results in dysfunction of the bladder epithelium. Different phenotypes of IC/BPS have been explored including Hunner and non-Hunner type IC, hypersensitive bladder, and bladder pain both with and without functional somatic syndrome...
November 2016: International Neurourology Journal
https://www.readbyqxmd.com/read/27899696/selective-antagonism-of-trpa1-produces-limited-efficacy-in-models-of-inflammatory-and-neuropathic-induced-mechanical-hypersensitivity-in-rats
#2
Sonya G Lehto, Andy D Weyer, Beth D Youngblood, Maosheng Zhang, Ruoyuan Yin, Weiya Wang, Yohannes Teffera, Melanie Cooke, Cheryl L Stucky, Laurie Schenkel, Stephanie Geuns-Meyer, Bryan D Moyer, Kenneth D Wild, Narender R Gavva
The transient receptor potential ankyrin 1 (TRPA1) channel has been implicated in pathophysiological processes that include asthma, cough, and inflammatory pain. Agonists of TRPA1 such as mustard oil and its key component allyl isothiocyanate (AITC) cause pain and neurogenic inflammation in humans and rodents, and TRPA1 antagonists have been reported to be effective in rodent models of pain. In our pursuit of TRPA1 antagonists as potential therapeutics, we generated AMG0902, a potent (IC90 of 300 nM against rat TRPA1), selective, brain penetrant (brain to plasma ratio of 0...
2016: Molecular Pain
https://www.readbyqxmd.com/read/27866934/pharmacodynamic-action-and-mechanism-of-du-liang-soft-capsule-a-traditional-chinese-medicine-capsule-on-treating-nitroglycerin-induced-migraine
#3
Min Hou, Qing Tang, Qiang Xue, Xiaona Zhang, Yang Liu, Sheng Yang, Liechun Chen, Xiaoyu Xu
ETHNOPHARMACOLOGICAL RELEVANCE: Du Liang soft capsule (DL) is a traditional Chinese medicine for treating migraines; it is made from two Chinese herbs, including LigusticumstriatumDC., root; Angelica dahurica (Hoffm.) Benth. & Hook.f. ex Franch. & Sav., root. AIM OF THE STUDY: In the present study, we aimed to elucidate the pharmacodynamic action of DL and its mechanism in an animal model of migraines induced by glyceryl trinitrate (GTN). MATERIALS AND METHODS: Sixty rats were randomly divided into six groups, including a normal control group, model control group, positive group (Sumatriptan 0...
November 17, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27846033/brush-cells-the-newly-identified-gatekeepers-of-the-urinary-tract
#4
Wolfgang Kummer, Klaus Deckmann
PURPOSE OF REVIEW: A specialized epithelial cell with chemosensory properties of taste cells known from the mouth has been newly identified in the urethra and linked to pathogen recognition. We here describe its properties and its link to defence mechanisms, showing parallels to similar sentinel cells in the respiratory and gastrointestinal tract. RECENT FINDINGS: In the urethra, slender epithelial cells with apical microvilli ('brush cells') express bitter and umami taste receptors and the downstream signalling cascade known from oropharyngeal gustation, utilizing it to monitor for bacterial products and bacterial growth facilitating conditions...
November 14, 2016: Current Opinion in Urology
https://www.readbyqxmd.com/read/27835641/combined-changes-in-chloride-regulation-and-neuronal-excitability-enable-primary-afferent-depolarization-to-elicit-spiking-without-compromising-its-inhibitory-effects
#5
Petri Takkala, Yi Zhu, Steven A Prescott
The central terminals of primary afferent fibers experience depolarization upon activation of GABAA receptors (GABAAR) because their intracellular chloride concentration is maintained above electrochemical equilibrium. Primary afferent depolarization (PAD) normally mediates inhibition via sodium channel inactivation and shunting but can evoke spikes under certain conditions. Antidromic (centrifugal) conduction of these spikes may contribute to neurogenic inflammation while orthodromic (centripetal) conduction could contribute to pain in the case of nociceptive fibers...
November 2016: PLoS Computational Biology
https://www.readbyqxmd.com/read/27834685/antagonism-of-cannabinoid-receptor-1-attenuates-the-anti-inflammatory-effects-of-electroacupuncture-in-a-rodent-model-of-migraine
#6
Hui Zhang, Shengdong He, Youping Hu, Hui Zheng
BACKGROUND: The anti-nociceptive effects of electroacupuncture (EA) in migraine have been documented in multiple randomised controlled trials. Neurogenic inflammation plays a key role in migraine attacks, and the anti-inflammatory effects of acupuncture have been associated with the type 1 cannabinoid (CB1) receptor. OBJECTIVE: To investigate whether CB1 receptors mediate the anti-inflammatory effects of EA on migraine attacks. METHODS: A migraine model was produced in Sprague-Dawley rats by unilateral electrical stimulation of the trigeminal ganglion (TGES)...
December 2016: Acupuncture in Medicine: Journal of the British Medical Acupuncture Society
https://www.readbyqxmd.com/read/27809877/n-docosahexaenoylethanolamine-ameliorates-lps-induced-neuroinflammation-via-camp-pka-dependent-signaling
#7
Taeyeop Park, Huazhen Chen, Karl Kevala, Ji-Won Lee, Hee-Yong Kim
BACKGROUND: Brain inflammation has been implicated as a critical mechanism responsible for the progression of neurodegeneration and characterized by glial cell activation accompanied by production of inflammation-related cytokines and chemokines. Growing evidence also suggests that metabolites derived from docosahexaenoic acid (DHA) have anti-inflammatory and pro-resolving effects; however, the possible role of N-docosahexaenoylethanolamine (synaptamide), an endogenous neurogenic and synaptogenic metabolite of DHA, in inflammation, is largely unknown...
November 4, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27801899/analysis-of-induced-pluripotent-stem-cells-carrying-22q11-2-deletion
#8
M Toyoshima, W Akamatsu, Y Okada, T Ohnishi, S Balan, Y Hisano, Y Iwayama, T Toyota, T Matsumoto, N Itasaka, S Sugiyama, M Tanaka, M Yano, B Dean, H Okano, T Yoshikawa
Given the complexity and heterogeneity of the genomic architecture underlying schizophrenia, molecular analyses of these patients with defined and large effect-size genomic defects could provide valuable clues. We established human-induced pluripotent stem cells from two schizophrenia patients with the 22q11.2 deletion (two cell lines from each subject, total of four cell lines) and three controls (total of four cell lines). Neurosphere size, neural differentiation efficiency, neurite outgrowth, cellular migration and the neurogenic-to-gliogenic competence ratio were significantly reduced in patient-derived cells...
November 1, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27793651/the-effect-of-inflammation-on-sympathetic-nerve-mediated-contractions-in-rat-isolated-caudal-artery
#9
Jocelyn Fotso Soh, Hilary R Strong, Noriko Daneshtalab, Reza Tabrizchi
Chronic inflammatory process(es) contributes to changes in vascular function in a variety of diseases. Sympathetic nerve-mediated responses in blood vessels play a pivotal role in regular physiological functions. We tested the hypothesis that sympathetic neuro-effector function will be altered as consequence of inflammatory state. Sympathetic nerve-mediated contractions and alpha adrenergic receptor expressions were evaluated in isolated caudal arteries of rats treated with saline and Complete Freund's adjuvant (CFA)...
October 25, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27770773/antinociceptive-effect-of-methanol-extract-of-celosia-cristata-linn-in-mice
#10
Shanta Islam, Md Shafiullah Shajib, Tajnin Ahmed
BACKGROUND: Celosia cristata Linn. (Amaranthaceae) is used in traditional medicine for the treatment of headache, sores, ulcers, eye inflammations, skin eruption, painful menstruation and carpal tunnel syndrome. This study was performed to evaluate the antinociceptive activity of methanol extract of the whole plant of C. cristata (MECC). METHODS: The evaluation of the antinociceptive effect of MECC was performed using thermal (hot plate, tail immersion test) and chemical (acetic acid, formalin, and glutamate-induced nociception test) pain models in mice at four different doses (50, 100, 200, 400 mg/kg; p...
October 22, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27754151/os-29-03-increased-neurokinin-release-from-afferent-renal-nerves-is-accompanied-by-decreased-afferent-electric-activity
#11
Tilmann Ditting, Kristina Rodionova, Sonja Heinlein, Karl Friedrich Hilgers, Christian Ott, Roland Schmieder, Kerstin Amann, Roland Veelken
OBJECTIVE: Afferent renal nerves exhibit a dual function. They influence intrarenal immunological processes by release of neurokinins like CGRP and control central sympathetic outflow via afferent electrical activity. The former seems to be important in renal inflammation whereas the sympathetic modulation by afferent electrical activity is not fully understood in cardiovascular disease and hypertension. Hence, we hypothesized that augmented effects of CGRP in renal inflammation occur with increased afferent renal nerve activity...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27729283/locally-and-traditionally-used-ligusticum-species-a-review-of-their-phytochemistry-pharmacology-and-pharmacokinetics
#12
Paul Owusu Donkor, Ying Chen, Liqin Ding, Feng Qiu
ETHNOPHARMACOLOGICAL RELEVANCE: Ligusticum species (Umbelliferae) have been widely used in traditional Chinese medicine, Korean folk medicine and Native American medicine for their medicinal and nutritional value. Decoctions of the rhizomes are used in treatment and prophylaxis of migraine, anaemia and cardiovascular conditions including stroke. AIM OF STUDY: This review is intended to fully compile the constituents of locally and traditionally used Ligusticum species, present their bioactivities and highlight potential leads for future drug design, and thus, provide a reference for further research and application of these species...
October 8, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27724914/neurogenic-inflammation-after-traumatic-brain-injury-and-its-potentiation-of-classical-inflammation
#13
Frances Corrigan, Kimberley A Mander, Anna V Leonard, Robert Vink
BACKGROUND: The neuroinflammatory response following traumatic brain injury (TBI) is known to be a key secondary injury factor that can drive ongoing neuronal injury. Despite this, treatments that have targeted aspects of the inflammatory pathway have not shown significant efficacy in clinical trials. MAIN BODY: We suggest that this may be because classical inflammation only represents part of the story, with activation of neurogenic inflammation potentially one of the key initiating inflammatory events following TBI...
October 11, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27718297/trpa1-receptor-is-upregulated-in-human-oral-lichen-planus
#14
J Kun, A Perkecz, L Knie, G Sétáló, T Tornóczki, E Pintér, Á Bán
OBJECTIVE: Oral lichen planus (OLP) is a chronic inflammatory disease of unknown etiology with antigen-specific and non-specific mechanisms. Transient receptor potential ankyrin 1 (TRPA1) is a non-selective cation channel activated by noxious stimuli such as oxidative stress products evoking pain and release of proinflammatory mediators from sensory nerve endings culminating in neurogenic inflammation. Extraneuronal TRPA1s, for example, on immune cells possess yet unknown functions. SUBJECTS AND METHODS: We studied the buccal mRNA expression (qPCR) and protein localization (immunohistochemistry) of TRPA1 receptors and key OLP mediator transcripts in oral mucosa samples of healthy volunteers (n = 9), OLP patients (n = 43), and OLP-like hyperkeratotic patients (n = 12)...
October 8, 2016: Oral Diseases
https://www.readbyqxmd.com/read/27716334/multiple-organ-dysfunction-and-systemic-inflammation-after-spinal-cord-injury-a-complex-relationship
#15
Xin Sun, Zachary B Jones, Xiao-Ming Chen, Libing Zhou, Kwok-Fai So, Yi Ren
Spinal cord injury (SCI) is a devastating event that results in significant physical disabilities for affected individuals. Apart from local injury within the spinal cord, SCI patients develop a variety of complications characterized by multiple organ dysfunction or failure. These disorders, such as neurogenic pain, depression, lung injury, cardiovascular disease, liver damage, kidney dysfunction, urinary tract infection, and increased susceptibility to pathogen infection, are common in injured patients, hinder functional recovery, and can even be life threatening...
October 6, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27676664/pulsed-dose-radiofrequency-before-ablation-of-medial-branch-of-the-lumbar-dorsal-ramus-for-zygapophyseal-joint-pain-reduces-post-procedural-pain
#16
David Arsanious, Emmanuel Gage, Jonathon Koning, Mazin Sarhan, Gassan Chaiban, Mohammed Almualim, Joseph Atallah
BACKGROUND: One of the potential side effects with radiofrequency ablation (RFA) includes painful cutaneous dysesthesias and increased pain due to neuritis or neurogenic inflammation. This pain may require the prescription of opioids or non-opioid analgesics to control post-procedural pain and discomfort. OBJECTIVES: The goal of this study is to compare post-procedural pain scores and post-procedural oral analgesic use in patients receiving continuous thermal radiofrequency ablation versus patients receiving pulsed dose radiofrequency immediately followed by continuous thermal radiofrequency ablation for zygopophaseal joint disease...
September 2016: Pain Physician
https://www.readbyqxmd.com/read/27652204/histopathological-transformation-to-small-cell-lung-carcinoma-in-non-small-cell-lung-carcinoma-tumors
#17
REVIEW
Rita Dorantes-Heredia, José Manuel Ruiz-Morales, Fernando Cano-García
Lung cancer is the principal cause of cancer-related death worldwide. The use of targeted therapies, especially tyrosine kinase inhibitors (TKIs), in specific groups of patients has dramatically improved the prognosis of this disease, although inevitably some patients will develop resistance to these drugs during active treatment. The most common cancer-associated acquired mutation is the epidermal growth factor receptor (EGFR) Thr790Met (T790M) mutation. During active treatment with targeted therapies, histopathological transformation to small-cell lung carcinoma (SCLC) can occur in 3-15% of patients with non-small-cell lung carcinoma (NSCLC) tumors...
August 2016: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/27646537/respiratory-symptoms-sleep-disordered-breathing-and-biomarkers-in-nocturnal-gastroesophageal-reflux
#18
Össur Ingi Emilsson, Bryndís Benediktsdóttir, Ísleifur Ólafsson, Elizabeth Cook, Sigurður Júlíusson, Einar Stefán Björnsson, Sunna Guðlaugsdóttir, Anna Soffía Guðmundsdóttir, Ekaterina Mirgorodskaya, Evert Ljungström, Erna Sif Arnardóttir, Þórarinn Gíslason, Christer Janson, Anna-Carin Olin
BACKGROUND: Nocturnal gastroesophageal reflux (nGER) is associated with respiratory symptoms and sleep-disordered breathing (SDB), but the pathogenesis is unclear. We aimed to investigate the association between nGER and respiratory symptoms, exacerbations of respiratory symptoms, SDB and airway inflammation. METHODS: Participants in the European Community Respiratory Health Survey III in Iceland with nGER symptoms (n = 48) and age and gender matched controls (n = 42) were studied by questionnaires, exhaled breath condensate (EBC), particles in exhaled air (PEx) measurements, and a home polygraphic study...
2016: Respiratory Research
https://www.readbyqxmd.com/read/27643081/os-29-03-increased-neurokinin-release-from-afferent-renal-nerves-is-accompanied-by-decreased-afferent-electric-activity
#19
Tilmann Ditting, Kristina Rodionova, Sonja Heinlein, Karl Friedrich Hilgers, Christian Ott, Roland Schmieder, Kerstin Amann, Roland Veelken
OBJECTIVE: Afferent renal nerves exhibit a dual function. They influence intrarenal immunological processes by release of neurokinins like CGRP and control central sympathetic outflow via afferent electrical activity. The former seems to be important in renal inflammation whereas the sympathetic modulation by afferent electrical activity is not fully understood in cardiovascular disease and hypertension. Hence, we hypothesized that augmented effects of CGRP in renal inflammation occur with increased afferent renal nerve activity...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27642579/current-understanding-on-pain-mechanism-in-migraine-and-cluster-headache
#20
REVIEW
Alina Buture, Rubesh Gooriah, Randa Nimeri, Fayyaz Ahmed
CONTEXT: Migraine and cluster headache are undoubtedly painful conditions. The respective pathogenesis of these two conditions is incompletely understood. In both cases, the treatments used have largely been empirical and have relied to a much lesser extent on our understanding of the mechanisms causing pain. We hereby review the pain mechanisms in migraine and cluster headache, two of the commonest primary headache disorders. EVIDENCE ACQUISITION: A review of the English literature was conducted by searching PubMed for studies on pain mechanism in migraine and cluster headache...
June 2016: Anesthesiology and Pain Medicine
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