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Calcitonin gene-related peptide

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https://www.readbyqxmd.com/read/28925503/quantitative-analysis-of-mouse-dural-afferent-neurons-expressing-trpm8-vglut3-and-nf200
#1
Lynn Ren, Michelle Jaehee Chang, Zhiyu Zhang, Ajay Dhaka, Zhaohua Guo, Yu-Qing Cao
OBJECTIVE: To quantify the abundance of dural afferent neurons expressing transient receptor potential channel melastatin 8 (TRPM8), vesicular glutamate transporter 3 (VGLUT3), and neurofilament 200 (NF200) in adult mice. BACKGROUND: With the increasing use of mice as a model system to study headache mechanisms, it is important to understand the composition of dural afferent neurons in mice. In a previous study, we have measured the abundance of mouse dural afferent neurons that express neuropeptide calcitonin gene-related peptide as well as two TRP channels TRPV1 and TRPA1, respectively...
September 19, 2017: Headache
https://www.readbyqxmd.com/read/28919322/changes-in-vasodilation-following-myocardial-ischemia-reperfusion-in-rats
#2
Sarah Brøgger Kristiansen, Majid Sheykhzade, Lars Edvinsson, Kristian Agmund Haanes
BACKGROUND: Blockage of a coronary artery, usually caused by arteriosclerosis, can lead to life threatening acute myocardial infarction. Opening with PCI (percutaneous coronary intervention), may be lifesaving, but reperfusion might exacerbate the cellular damage, and changes in the endothelium are believed to be involved in this worsened outcome. AIM: The aim of the present study was to compare endothelial dependent and independent vasodilatory effect after experimental myocardial ischemia/reperfusion (I/R)...
September 14, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/28914594/salivary-neuropeptides-stress-and-periodontitis
#3
Hady Haririan, Oleh Andrukhov, Michael Böttcher, Eleonore Pablik, Gernot Wimmer, Andreas Moritz, Xiaohui Rausch-Fan
BACKGROUND: Scientific evidence for psychological stress as a risk factor for periodontitis is fragmentary relying mostly on either questionnaire-based or biomarker studies. The aim of this study was to investigate Brain Derived Neurotrophic Factor, Substance P, Vasoactive Intestinal Peptide (VIP), Neuropeptide Y (NPY), Calcitonin Gene Related Peptide and Adrenomedullin as well as cortisol in saliva and serum in periodontal health and disease combined with different aspects of stress and possible associations with clinical parameters...
September 15, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28904199/calcitonin-gene-related-peptide-induces-hiv-1-proteasomal-degradation-in-mucosal-langerhans-cells
#4
Morgane Bomsel, Yonatan Ganor
The neuro-immune dialogue between peripheral neurons and Langerhans cells (LCs) within mucosal epithelia protects against incoming pathogens. LCs rapidly internalize human immunodeficiency virus type 1 (HIV-1) upon its sexual transmission and then trans-infect CD4+ T-cells. We recently found that the neuropeptide calcitonin gene-related peptide (CGRP), secreted mucosally from peripheral neurons, inhibits LCs-mediated HIV-1 trans-infection. Herein, we investigated the mechanism of CGRP-induced inhibition, focusing on HIV-1 degradation in LCs and its interplay with trans-infection...
September 13, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28898586/transcerebral-net-exchange-of-vasoactive-peptides-and-catecholamines-during-lipopolysaccharide-induced-systemic-inflammation-in-healthy-humans
#5
Ronan M G Berg, Sarah Taudorf, Damian Miles Bailey, Rasmus Holmboe Dahl, Carsten Lundby, Kirsten Møller
The systemic inflammatory response triggered by lipopolysaccharide (LPS) is associated with cerebral vasoconstriction, but the underlying mechanisms are unknown. We therefore examined whether a four-hour intravenous LPS infusion (0.3 ng kg<sup>-1</sup>) induces any changes in the transcerebral net exchange of the vasoactive peptides endothelin-1 (ET-1) and calcitonin-gene related peptide (CGRP) and catecholamines in human volunteers. Cerebral blood flow was measured by the Kety-Schmidt technique, and paired arterial-to-jugular venous blood samples were obtained for estimating the transcerebral exchange of ET-1, CGRP and catecholamines by the Fick principle in twelve volunteers before and after LPS...
September 12, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28898282/p2x3-receptor-involvement-in-endometriosis-pain-via-erk-signaling-pathway
#6
Shaojie Ding, Libo Zhu, Yonghong Tian, Tianhong Zhu, Xiufeng Huang, Xinmei Zhang
The purinergic receptor P2X ligand-gated ion channel 3 (P2X3) is crucially involved in peripheral nociceptive processes of somatic and visceral pain. Endometriosis pain is considered as a kind of inflammatory and neuropathic pain. However, whether P2X3 is involved in endometriosis pain has not been reported up to date. Here, we aimed to determine whether P2X3 expression in endometriotic lesions is involved in endometriosis pain, which is regulated by inflammatory mediators through extracellular regulated protein kinases (ERK) signalling pathway...
2017: PloS One
https://www.readbyqxmd.com/read/28892747/calcitonin-gene-related-peptide-exerts-anti-inflammatory-property-through-regulating-murine-macrophages-polarization-in-vitro
#7
Jia-Xi Duan, Yong Zhou, Ai-Yuan Zhou, Xin-Xin Guan, Tian Liu, Hui-Hui Yang, Hui Xie, Ping Chen
Acute lung injury (ALI) is a condition resulting from direct or indirect lung injury associated with high mortality and morbidity. The phenotype of macrophages in lung contributes to the pathological progress of ALI. Calcitonin gene-related peptide (CGRP) is one of the most abundant neuropeptides in lung, and attenuates lipopolysaccharide (LPS)-induced ALI in rats. However, the exact effect of CGRP on the activation of macrophages remains unknown. Here we investigate the effect of CGRP on the macrophages activation and inflammation in murine macrophages in vitro...
September 8, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28886869/immunohistochemical-study-of-arginases-1-and-2-in-the-olfactory-bulbs-of-the-korean-roe-deer-capreolus-pygargus
#8
Jeongtae Kim, Meejung Ahn, Yuna Choi, Ji-Yeon Hyeon, Taekyun Shin
Arginases are enzymes of the urea cycle that catalyze the hydrolysis of l-arginine to ornithine and urea. The enzymes are core components of the arginine-ornithine-glutamate-γ-amino butyric acid pathway of the central nervous system. In the present study, we immunohistochemically determined the localization of arginase 1 and 2 in the olfactory bulb (OB) of the roe dear (Capreolus pygargus). Reverse transcription PCR revealed that the mRNAs encoding both arginase 1 and 2 were expressed in the OB. Arginase 1 was localized to olfactory nerve axons, calcitonin gene-related peptide-positive mitral/tufted cells (excitatory neurons), and glutamate acid decarboxylase 65/67-immunopositive periglomerular cells of the main olfactory bulb...
September 5, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28884411/role-of-calcitonin-gene-related-peptide-in-energy-metabolism
#9
REVIEW
William Gustavo Lima, Gleuber Henrique Marques-Oliveira, Thaís Marques da Silva, Valéria Ernestânia Chaves
PURPOSE: Calcitonin gene-related peptide (CGRP) is a neuropeptide produced by alternative tissue-specific splicing of the primary transcript of the CALC genes. CGRP is widely distributed in the central and peripheral nervous system, as well as in several organs and tissues. The presence of CGRP in the liver and brown and white adipose tissue suggests an effect of this neuropeptide on regulation of energy homeostasis. METHODS: In this review, we summarize the current knowledge of the effect of CGRP on the control of energy metabolism, primarily focusing on food intake, thermoregulation and lipid metabolism in adipose tissue, liver and muscle...
September 7, 2017: Endocrine
https://www.readbyqxmd.com/read/28884307/the-role-of-the-transient-receptor-potential-ankyrin-type-1-trpa1-channel-in-migraine-pain-evaluation-in-an-animal-model
#10
Chiara Demartini, Cristina Tassorelli, Anna Maria Zanaboni, Germana Tonsi, Oscar Francesconi, Cristina Nativi, Rosaria Greco
BACKGROUND: Clinical and experimental studies have pointed to the possible involvement of the transient receptor potential ankyrin type-1 (TRPA1) channels in migraine pain. In this study, we aimed to further investigate the role of these channels in an animal model of migraine using a novel TRPA1 antagonist, ADM_12, as a probe. METHODS: The effects of ADM_12 on nitroglycerin-induced hyperalgesia at the trigeminal level were investigated in male rats using the quantification of nocifensive behavior in the orofacial formalin test...
September 7, 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28883884/itraq-based-quantitative-proteomics-analysis-of-the-protective-effect-of-yinchenwuling-powder-on-hyperlipidemic-rats
#11
Zheyu Zhang, Wenbo Wang, Ling Jin, Xin Cao, Gonghui Jian, Ning Wu, Xia Xu, Ye Yao, Dongsheng Wang
Yinchenwuling powder (YCL) is an effective traditional Chinese medicine formula to modulate lipid levels. In this study, we established hyperlipidemic rat models and treated them with YCL. The serum concentrations of lipid, malondialdehyde (MDA), endothelin-1 (ET-1), and calcitonin gene-related peptide (CGRP) were measured. Adventitia-free vascular proteins between hyperlipidemic rats and YCL-treated rats were identified using iTRAQ-based quantitative proteomics research approach. Proteins with 1.3-fold difference were analyzed through bioinformatics, and proteomic results were verified by Western blot...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28874973/inhibiting-vascular-endothelial-growth-factor-in-injured-intervertebral-discs-attenuates-pain-related-neuropeptide-expression-in-dorsal-root-ganglia-in-rats
#12
Jun Sato, Kazuhide Inage, Masayuki Miyagi, Yoshihiro Sakuma, Kazuyo Yamauchi, Masao Koda, Takeo Furuya, Junichi Nakamura, Miyako Suzuki, Go Kubota, Yasuhiro Oikawa, Takeshi Sainoh, Kazuki Fujimoto, Yasuhiro Shiga, Koki Abe, Hirohito Kanamoto, Masahiro Inoue, Hideyuki Kinoshita, Masaki Norimoto, Tomotaka Umimura, Kazuhisa Takahashi, Seiji Ohtori, Sumihisa Orita
STUDY DESIGN: An experimental animal study. PURPOSE: To evaluate effects of anti-vascular endothelial growth factor (VEGF) on the content and distribution of the calcitonin gene-related peptide (CGRP) in the dorsal ganglia in a rat model. OVERVIEW OF LITERATURE: Increased expression of VEGF in degenerative disc disease increases the levels of inflammatory cytokines and nerve ingrowth into the damaged discs. In animal models, increased levels of VEGF can persist for up to 2 weeks after an injury...
August 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28867800/ciguatoxins-evoke-potent-cgrp-release-by-activation-of-voltage-gated-sodium-channel-subtypes-nav1-9-nav1-7-and-nav1-1
#13
Filip Touska, Simon Sattler, Philipp Malsch, Richard J Lewis, Peter W Reeh, Katharina Zimmermann
Ciguatoxins (CTXs) are marine toxins that cause ciguatera fish poisoning, a debilitating disease dominated by sensory and neurological disturbances that include cold allodynia and various painful symptoms as well as long-lasting pruritus. Although CTXs are known as the most potent mammalian sodium channel activator toxins, the etiology of many of its neurosensory symptoms remains unresolved. We recently described that local application of 1 nM Pacific Ciguatoxin-1 (P-CTX-1) into the skin of human subjects induces a long-lasting, painful axon reflex flare and that CTXs are particularly effective in releasing calcitonin-gene related peptide (CGRP) from nerve terminals...
August 30, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28866875/substance-p-and-calcitonin-gene-related-peptide-in-the-glands-of-external-auditory-canal-skin
#14
Yong Joo Yoon, Jin Yoon, Eun Jung Lee, Jong Seung Kim
Objectives.: The earwax (cerumen) that covers external auditory canal (EAC) skin contains a mixture of ceruminous and sebaceous gland substances, such as lipids, peptides, and proteins. The components secreted from the ceruminous gland that is a modified sweat gland form cerumen and contain several antimicrobial factors. Since substance P (SP) and calcitonin gene-related peptide (CGRP), known as a secretagogue, have been found in sweat glands, our purpose was to determine the expression of SP and CGRP in the glands of EAC skin...
September 5, 2017: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/28865235/effect-of-electro-acupuncture-on-neuroplasticity-of-spinal-cord-transected-rats
#15
Xuyang Wang, Shiming Ju, Shiwen Chen, Wenwei Gao, Jun Ding, Gan Wang, Heli Cao, Hengli Tian, Xiaoli Li
BACKGROUND This study aimed to evaluate the effects of electro-acupuncture (EA) on neuroplasticity associated with the expressions of neurotrophic factors (NTFs) and their receptors in rats subjected to spinal cord transection (SCT). MATERIAL AND METHODS A total of 144 rats were randomly divided into 3 groups (n=48 per group): sham-operated group, SCT group, and EA (electro-acupuncture) group. Rats in SCT and EA groups received spinal cord transection at T10-T11 vertebral levels. Then, EA group rats received EA treatment...
September 2, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28862758/fremanezumab-as-add-on-treatment-for-patients-treated-with-other-migraine-preventive-medicines
#16
Joshua M Cohen, David W Dodick, Ronghua Yang, Lawrence C Newman, Thomas Li, Ernesto Aycardi, Marcelo E Bigal
BACKGROUND: Fremanezumab (formerly TEV-48125) is a monoclonal antibody directed against calcitonin-gene-related peptide (CGRP), a validated target for migraine preventive therapy. In two previous phase 2 studies, fremanezumab administered once every 28 days for 12 weeks was found to be effective and safe as a preventive treatment for patients suffering from episodic migraine (EM) and chronic migraine (CM). OBJECTIVE: To evaluate the efficacy and safety of fremanezumab as an add-on preventive therapy in individuals with EM and CM who are on stable doses of preventive migraine medications...
September 1, 2017: Headache
https://www.readbyqxmd.com/read/28859929/cutaneous-and-renal-vasodilatory-response-to-local-pressure-application-a-comparative-study-in-mice
#17
Anne-Laure Begey, Kiao Ling Liu, Ming Lo, Audrey Josset-Lamaugarny, Nicolas Picard, Catherine Gauthier, Berengere Fromy, Dominique Sigaudo-Roussel, Laurence Dubourg
BACKGROUND AND AIM: We have reported a novel relationship involving mechanical stimulation and vasodilation in rodent and human skin, referred to as pressure-induced vasodilation (PIV). It is unknown whether this mechanism exists in kidney and reflects the microcirculation in deep organs. Therefore, we compared the skin and kidney PIV to determine whether their changes were similar. METHODS: In anesthetized mice fed a normal salt-diet, laser Doppler flux (LDF) signals were measured when an increase in local pressure was applied to the surface of the head skin with the rate of 2...
August 30, 2017: Microvascular Research
https://www.readbyqxmd.com/read/28856910/distribution-of-cgrp-and-cgrp-receptor-components-in-the-rat-brain
#18
Karin Warfvinge, Lars Edvinsson
Background Calcitonin gene-related peptide and its receptor, consisting of receptor activity-modifying protein 1 and calcitonin receptor-like receptor, are of considerable interest because of the role they play in migraine and recently developed migraine therapies. Methods To better understand the function of this neuropeptide, we used immunohistochemistry to determine a detailed distribution of calcitonin gene-related peptide, receptor activity-modifying protein 1 and calcitonin receptor-like receptor in the rat brain in a region of 0...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28856479/calcitonin-gene-related-peptide-antagonism-and-cluster-headache-an-emerging-new-treatment
#19
REVIEW
Håkan Ashina, Lawrence Newman, Sait Ashina
Calcitonin gene-related peptide (CGRP) is a key signaling molecule involved in migraine pathophysiology. Efficacy of CGRP monoclonal antibodies and antagonists in migraine treatment has fueled an increasing interest in the prospect of treating cluster headache (CH) with CGRP antagonism. The exact role of CGRP and its mechanism of action in CH have not been fully clarified. A search for original studies and randomized controlled trials (RCTs) published in English was performed in PubMed and in ClinicalTrials...
August 30, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28851567/association-of-down-regulation-of-calcitonin-gene-related-peptide-and-substance-p-with-increase-of-myocardial-vulnerability-in-diabetic-neuropathic-rats
#20
Tu-Ping Li, Zheng Guo, Chao-Jie Liu, Tao Sun, Lu Chen, Xin Zhao
Diabetic patients present high co-morbidities of neuropathy and severer consequences of coronary heart disease. But the pathological mechanism is still unclear. Here we investigated a potential association of diabetic impairment of sensory nerves with increase of vulnerability of myocardium in acute myocardial ischemia/reperfusion. A rat model of diabetes mellitus was induced by high fat and sugar diet plus a small dose of streptozotocin. Impairment of sensory nerves was evaluated by measurement of changes in tail flick latency to noxious thermal stimulation and calcitonin gene-related peptide (CGRP) and substance P (SP) in the dorsal root ganglia (DRG) and the myocardium of the heart were examined...
August 26, 2017: Peptides
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