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Neurogenic inflammation

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https://www.readbyqxmd.com/read/28225715/the-role-of-cgrp-in-peripheral-and-central-pain-mechanisms-including-migraine
#1
Smriti Iyengar, Michael H Ossipov, Kirk W Johnson
Calcitonin gene-related peptide (CGRP) is a 37-amino acid peptide found primarily in the C and Aδ sensory fibers arising from the dorsal root and trigeminal ganglia, as well as the central nervous system. CGRP was found to play important roles in cardiovascular, digestive, and sensory functions. Although the vasodilatory properties of CGRP are well documented, its somatosensory function regarding modulation of neuronal sensitization and of enhanced pain has received considerable attention recently. Growing evidence indicates that CGRP plays a key role in the development of peripheral sensitization and the associated enhanced pain...
December 29, 2016: Pain
https://www.readbyqxmd.com/read/28219705/substance-p-represents-a-novel-first-line-defense-mechanism-in-the-nose
#2
Olivia Larsson, Lotta Tengroth, Yuan Xu, Rolf Uddman, Susanna Kumlien Georén, Lars-Olaf Cardell
BACKGROUND: Neuropeptides, such as substance P (SP), have long been seen as mediators of widespread, continuous airway inflammation, a process known as neurogenic inflammation. However, this has been difficult to demonstrate clinically, suggesting an alternative role for these signaling molecules. OBJECTIVES: To examine the role of SP in nasal infection, by assessing the release of SP in response to viral stimulation and characterizing the effects of SP on innate immunity, the latter reflected in changes in local Toll-like receptor (TLR) expression...
February 17, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28215304/neurotrophins-and-migraine
#3
L B Martins, A L Teixeira, R B Domingues
Neurotrophins (NTs) have been implicated in generation and modulation of nociceptive pathways. Change in NTs levels is associated with painful conditions and neurological diseases such as migraine. Currently, it is generally recognized that migraine headaches result from the activation and sensitization of trigeminal sensory afferent fibers leading to neuropeptides release such as calcitonin gene-related peptide (CGRP) and substance P (SP). This triggers an inflammatory cascade causing a neurogenic inflammation...
2017: Vitamins and Hormones
https://www.readbyqxmd.com/read/28204809/ketamine-suppresses-the-substance-p-induced-production-of-il-6-and-il-8-by-human-u373mg-glioblastoma-astrocytoma-cells
#4
Keisuke Yamaguchi, Seiichiro Kumakura, Taisuke Murakami, Akimasa Someya, Eiichi Inada, Isao Nagaoka
The neuropeptide substance P (SP) is an important mediator of neurogenic inflammation within the central and peripheral nervous systems. SP has been shown to induce the expression of pro-inflammatory cytokines implicated in the pathogenesis of several disorders of the human brain via the neurokinin-1 receptor (NK-1R). Ketamine, an intravenous anesthetic agent, functions as a competitive antagonist of the excitatory neurotransmission N-methyl-D‑aspartate (NMDA) receptor, and also antagonizes the NK-1R by interfering with the binding of SP...
March 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28196712/ipomoea-pes-caprae-l-r-br-convolvulaceae-as-a-topical-herbal-medicine-to-relieve-pain-and-inflammation-promising-tool-against-effects-due-to-toxin-skin-contact
#5
Cristiane da Silva Barth, Hugo Guilherme Tolentino de Souza, Lilian W Rocha, Gislaine Francieli da Silva, Mariana Ferreira Dos Anjos, Veronica D'Avila Pastor, Tania Mari Belle Bresolin, Angelica Garcia Couto, José Roberto Santin, Nara Lins Meira Quintão
ETHNOPHARMACOLOGICAL RELEVANCE: Ipomoea pes-caprae is known as bayhops, beach morning glory or goat's foot, and in Brazil as salsa-de-praia. Its leaves are used in worldwide folk medicine for the relief of jellyfish-stings symptoms. The literature only reports the anti-inflammatory and neutralizing effects of a nonpolar plant derived, without validating the popular use or exploring the mechanism of action. AIM OF THE STUDY: This study aimed to evaluate and validate the topical effects of a semisolid containing hydroethanolic extract obtained from the aerial parts of I...
February 11, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28117875/antipruritic-effect-of-pretreatment-with-8-topical-capsaicin-on-histamine-and-cowhage-evoked-itch-in-healthy-volunteers-a-randomized-placebo-blinded-proof-of-concept-trial
#6
H H Andersen, J B Marker, E A Hoeck, J Elberling, L Arendt-Nielsen
BACKGROUND: Chronic itch is difficult to treat and associated with significantly decreased life quality. Topical low-concentration capsaicin (0.006-0.05%) has previously been investigated and applied in therapy of itch but contradictory evidence exits regarding its efficacy. OBJECTIVES: This placebo-controlled, double-blinded study investigated the effect of 8% topical capsaicin applied for 1 and 24 hours on evoked itch, neurogenic inflammation and itch-associated dysesthesia...
January 24, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28063038/surgical-denervation-in-the-imiquimod-induced-psoriasiform-mouse-model
#7
Armanda J Onderdijk, Ineke M Hekking-Weijma, Edwin F Florencia, Errol P Prens
Psoriasis is a chronic inflammatory skin disease with a prevalence of 2-3 %. It appears to result from a combination of genetic and environmental factors, but the precise pathogenesis is still unknown. Neurogenic inflammation is involved in psoriasis pathogenesis as well, but the role of neurogenic factors is currently unclear. Molecular studies often involve material obtained from patients. However, many questions and especially experimental manipulations are not suited for study in humans. Imiquimod application on mouse skin leads to immune cell infiltration, inflammation with intense redness, epidermal thickening, and scaling that jointly greatly resembles human psoriasis...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28012856/increased-fndc5-irisin-expression-in-human-hepatocellular-carcinoma
#8
Melania Gaggini, Manuela Cabiati, Serena Del Turco, Teresa Navarra, Paolo De Simone, Franco Filipponi, Silvia Del Ry, Amalia Gastaldelli, Giuseppina Basta
The fibronectin type III domain containing 5 (FNDC5)/Irisin, a novel energy-regulating hormone, is associated with lipid and carbohydrate metabolism. It is produced in low amounts by normal hepatic tissue, while in human hepatocellular carcinoma (HCC), in which aberrant de novo lipogenesis (DNL) occurs, the hepatic expression of FNDC5/Irisin is still unknown. The gene expression of FNDC5/Irisin, associated to key regulators of DNL, inflammation and cancer progression was evaluated in liver tissue of 18 patients with HCC undergoing liver transplantation and of 18 deceased donors...
February 2017: Peptides
https://www.readbyqxmd.com/read/28007584/neurogenesis-upregulation-on-the-healthy-hemisphere-after-stroke-enhances-compensation-for-age-dependent-decrease-of-basal-neurogenesis
#9
Joanna Adamczak, Markus Aswendt, Christina Kreutzer, Peter Rotheneichner, Adrien Riou, Marion Selt, Andreas Beyrau, Ulla Uhlenküken, Michael Diedenhofen, Melanie Nelles, Ludwig Aigner, Sebastien Couillard-Despres, Mathias Hoehn
Stroke is a leading cause of death and disability worldwide with no treatment for the chronic phase available. Interestingly, an endogenous repair program comprising inflammation and neurogenesis is known to modulate stroke outcome. Several studies have shown that neurogenesis decreases with age but the therapeutic importance of endogenous neurogenesis for recovery from cerebral diseases has been indicated as its ablation leads to stroke aggravation and worsened outcome. A detailed characterization of the neurogenic response after stroke related to ageing would help to develop novel and targeted therapies...
December 20, 2016: Neurobiology of Disease
https://www.readbyqxmd.com/read/28004646/exhaled-breath-condensate-ph-and-cysteinyl-leukotriens-in-patients-with-chronic-cough-secondary-to-acid-gastroesophageal-reflux
#10
Enrico Heffler, Claudia Crimi, Luisa Brussino, Stefania Nicola, Stefania Sichili, Luca Dughera, Giovanni Rolla, Nunzio Crimi
Chronic cough is one of the most common clinical problems and it may be secondary to different stimuli and diseases, including low-level physical and chemical stimulation of the esophageal-bronchial reflex, suggestive of cough-reflex hyperresponsiveness, in patients with gastroesophageal reflux; however, it is still debated whether gastroesophageal reflux could induce airway inflammation and acidification. The aim of this study was to investigate airway pH and cysteynil-leukotrienes (Cys-LTs) concentration (a marker of airway inflammation) in exhaled breath condensate (EBC)...
December 22, 2016: Journal of Breath Research
https://www.readbyqxmd.com/read/28002894/effect-of-nerve-growth-factor-on-cultured-human-chondrocytes
#11
A Gigante, L Senesi, S Manzotti, A Palmieri, E Skrami, V Sollazzo
Nerve growth factor (NGF) is involved in several joint diseases. It participates in nociception and neurogenic inflammation and its concentrations increase in synovial fluid and tissue from arthritis. However, data about its role in articular cartilage are scant and conflicting. This study analysed effects of different NGF concentrations on cultured human chondrocytes by evaluating cell proliferation, cell phenotype, and gene expression. The MTT test excluded an influence on cell viability. Alcian blue and S100 staining demonstrated that NGF may induce de-differentiation of the chondrocyte phenotype...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28000084/peripheral-and-central-antinociceptive-effects-of-the-butanolic-fraction-of-byrsonima-verbascifolia-leaves-on-nociception-induced-models-in-mice
#12
A A Saldanha, J M Siqueira, A H F Castro, N A Matos, A Klein, D B Silva, C A Carollo, A C Soares
Byrsonima verbascifolia (Malpighiaceae), commonly known as 'murici', is used in folk medicine, for example, in the treatment of inflammation. The anti-inflammatory activity of the butanolic fraction of B. verbascifolia leaves (BvBF) was previously reported by our group, and the present study was designed to evaluate their antinociceptive effects. BvBF (25, 50, and 100 mg/kg) administered intraperitoneally (i.p.) inhibited acetic acid induced abdominal writhing. In the formalin test, BvBF (10, 30 and 100 mg/kg, i...
February 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/27993602/the-neurological-effects-of-ghrelin-in-brain-diseases-beyond-metabolic-functions
#13
REVIEW
Qian Jiao, Xixun Du, Yong Li, Bing Gong, Limin Shi, Tingting Tang, Hong Jiang
Ghrelin, a peptide released by the stomach that plays a major role in regulating energy metabolism, has recently been shown to have effects on neurobiological behaviors. Ghrelin enhances neuronal survival by reducing apoptosis, alleviating inflammation and oxidative stress, and accordingly improving mitochondrial function. Ghrelin also stimulates the proliferation, differentiation and migration of neural stem/progenitor cells (NS/PCs). Additionally, the ghrelin is benefit for the recovery of memory, mood and cognitive dysfunction after stroke or traumatic brain injury...
February 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/27939458/evidence-for-physiological-and-pathological-roles-for-sensory-nerves-in-the-microvasculature-and-skin
#14
X Kodji, A A Aubdool, S D Brain
This review highlights the progress from the initial finding of neurogenic inflammation up to the most recent development in the field of sensory nerves research, focusing on their roles in the microvasculature and the skin. Recent discovery of Transient Receptor Potential (TRP) channels highlight their important roles in detecting a range of environmental stimuli, including chemical and temperature. This provides us novel mechanisms for driving neurogenic inflammation upstream of neuropeptide release in addition to promising potential therapeutic targets in various diseases, including pain, itching and skin inflammation...
October 2016: Current Research in Translational Medicine
https://www.readbyqxmd.com/read/27939247/salsalate-treatment-following-traumatic-brain-injury-reduces-inflammation-and-promotes-a-neuroprotective-and-neurogenic-transcriptional-response-with-concomitant-functional-recovery
#15
Mouna Lagraoui, Gauthaman Sukumar, Joseph R Latoche, Sean K Maynard, Clifton L Dalgard, Brian C Schaefer
Neuroinflammation plays a critical role in the pathogenesis of traumatic brain injury (TBI). TBI induces rapid activation of astrocytes and microglia, infiltration of peripheral leukocytes, and secretion of inflammatory cytokines. In the context of modest or severe TBI, such inflammation contributes to tissue destruction and permanent brain damage. However, it is clear that the inflammatory response is also necessary to promote post-injury healing. To date, anti-inflammatory therapies, including the broad class of non-steroidal anti-inflammatory drugs (NSAIDs), have met with little success in treatment of TBI, perhaps because these drugs have inhibited both the tissue-damaging and repair-promoting aspects of the inflammatory response, or because inhibition of inflammation alone is insufficient to yield therapeutic benefit...
March 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/27926982/trpv4-channels-mediate-na-k-cl-co-transporter-induced-brain-edema-after-traumatic-brain-injury
#16
Kwok-Tung Lu, Tai-Chun Huang, Ya-Hsin Tsai, Yi-Ling Yang
Na(+) -K(+) -2Cl(-) co-transporter (NKCC1) plays an important role in traumatic brain injury (TBI)-induced brain edema via the mitogen-activated protein kinases (MAPK) cascade. The transient receptor potential vanilloid type 4 (TRPV4) channel participates in neurogenic inflammation, pain transmission and edema. In this study, we investigated the relationship between NKCC1 and TRPV4 and the related signaling pathways in TBI-induced brain edema and neuronal damage. TBI was induced by the calibrated weight-drop device...
December 7, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27924726/neurodegenerative-disease-a-perspective-on-cell-based-therapy-in-the-new-era-of-cell-free-nano-therapy
#17
Su M Metcalfe, Sean Bickerton, Tarek Fahmy
Neurodegenerative diseases (NDD) result in irreversible loss of neurons. Dementia develops when disease-induced neuronal loss becomes sufficient to impair both memory and cognitive functioning and, globally, dementia is increasing to epidemic proportions as populations age. In the current era of regenerative medicine intense activity is asking, can loss of endogenous neurons be compensated by replacement with exogenously derived cells that have either direct, or indirect, neurogenic capacity? But, more recently, excitement is growing around an emerging alternative to the cell-based approach - here nanotechnology for targeted delivery of growth factor aims to support and expand resident central nervous system (CNS) stem cells for endogenous repair...
December 6, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27915472/pathomechanism-of-interstitial-cystitis-bladder-pain-syndrome-and-mapping-the-heterogeneity-of-disease
#18
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
#19
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
#20
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...
January 4, 2017: Journal of Ethnopharmacology
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