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Calcitonin gene-related peptide

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https://www.readbyqxmd.com/read/28446517/a-novel-%C3%AE-calcitonin-gene-related-peptide-analogue-protects-against-end-organ-damage-in-experimental-hypertension-cardiac-hypertrophy-and-heart-failure
#1
Aisah A Aubdool, Pratish Thakore, Fulye Argunhan, Sarah-Jane Smillie, Moritz Schnelle, Salil Srivastava, Khadija M Alawi, Elena Wilde, Jennifer Mitchell, Keith Farrell-Dillon, Daniel A Richards, Giuseppe Maltese, Richard C Siow, Manasi Nandi, James E Clark, Ajay M Shah, Anette Sams, Susan D Brain
Background -Research into the therapeutic potential of α-calcitonin gene-related peptide (α-CGRP) has been limited due to its peptide nature and short half-life. Here, we evaluate whether a novel potent and long lasting (t½ ≥ 7h) acylated α-CGRP analogue (αAnalogue) could alleviate and reverse cardiovascular disease in two distinct murine models of hypertension and heart failure in vivoMethods -The ability of the αAnalogue to act selectively via the CGRP pathway was shown in skin using a CGRP receptor antagonist...
April 26, 2017: Circulation
https://www.readbyqxmd.com/read/28435975/-effect-of-bilateral-injection-of-calcitonin-gene-related-peptide-into-amygdala-on-learning-and-memory-of-mice
#2
Xin Wu, Wan-Jun Zheng, Ming-Hui Lv, Jian-Feng Gao
The aim of the present study was to explore the effects of different doses of calcitonin gene-related peptide (CGRP) injected into the central nucleus of amygdala on cognitive function, learning and memory of mice. C57BL/6J mice (30 days old) were randomly divided into control, sham, and three CGRP groups (10 mice for each group). Three doses of CGRP (200, 400 and 800 ng) were bilaterally administered into the central nucleus of the amygdala. Open field test was used to assess cognitive function. Novel object recognition and Morris water maze test were used to evaluate learning and memory of the mice...
April 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28432311/enteric-innervation-combined-with-proteomics-for-the-evaluation-of-the-effects-of-chronic-fluoride-exposure-on-the-duodenum-of-rats
#3
Carina Guimarães de Souza Melo, Juliana Vanessa Colombo Martins Perles, Jacqueline Nelisis Zanoni, Sara Raquel Garcia de Souza, Erika Xavier Santos, Aline de Lima Leite, Alessandro Domingues Heubel, Camila Oliveira E Souza, Juliana Gadelha de Souza, Marília Afonso Rabelo Buzalaf
Ingested fluoride (F) is absorbed mainly in the small intestine, which is controlled by the Enteric Nervous System (ENS). Although important intestinal symptomatology has been described after excessive F exposure, there have been no studies reporting the effects of F on the ENS. In this study, the effects of chronic F exposure were evaluated on the duodenums of rats through proteomic and morphological analyses. Concentrations of 0, 10, or 50 ppm of F were applied to the drinking water for 30 days. Immunofluorescence techniques were performed in the myenteric plexus of the duodenum to detect HuC/D, neuronal nitric oxide (nNOS), vasoactive intestinal peptide (VIP), calcitonin gene related peptide (CGRP), and substance P (SP)...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28431586/expression-of-calcitonin-gene-related-peptide-in-the-infrapatellar-fat-pad-in-knee-osteoarthritis-patients
#4
Jun Aikawa, Kentaro Uchida, Shotaro Takano, Gen Inoue, Atsushi Minatani, Masayuki Miyagi, Dai Iwase, Hiroyuki Sekiguchi, Manabu Mukai, Masashi Takaso
BACKGROUND: The infrapatellar fat pad (IPFP) has been implicated as a possible source of osteoarthritis (OA) development and knee pain due to the production of inflammatory mediators and the existence of nerve fibers within this structure. Calcitonin gene-related peptide (CGRP) is a vasodilatory neuropeptide that is localized to joint tissues and has recently been implicated in the development of knee OA and OA pain. To date, however, the expression levels of CGRP in the IPFP of human knee OA patients have not been examined...
April 21, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28430869/inhibition-of-the-p2x7-panx1-complex-suppresses-spreading-depolarization-and-neuroinflammation
#5
Shih-Pin Chen, Tao Qin, Jessica L Seidel, Yi Zheng, Matthias Eikermann, Michel D Ferrari, Arn M J M van den Maagdenberg, Michael A Moskowitz, Cenk Ayata, Katharina Eikermann-Haerter
Spreading depolarization is a wave of neuronal and glial depolarization. Within minutes after spreading depolarization, the neuronal hemichannel pannexin 1 (PANX1) opens and forms a pore complex with the ligand-gated cation channel P2X7, allowing the release of excitatory neurotransmitters to sustain spreading depolarization and activate neuroinflammation. Here, we explore the hypothesis that the P2X7-PANX1 pore complex is a critical determinant of spreading depolarization susceptibility with important consequences for neuroinflammation and trigeminovascular activation...
April 20, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28429354/the-role-of-the-hippocampus-and-the-function-of-calcitonin-gene-related-peptide-in-the-mechanism-of-traumatic-brain-injury-accelerating-fracture-healing
#6
Y Song, G-X Han, L Chen, Y-Z Zhai, J Dong, W Chen, T-S Li, H-Y Zhu
OBJECTIVE: This research attempts to identify the part the hippocampus plays in accelerated fracture-healing after traumatic brain injury as well as to test functions of calcitonin gene-related peptide (CGRP) during this process. MATERIALS AND METHODS: Experiments were carried out on Male Sprague-Dawley rats that were split into four groups at random: TBI-fracture group, fracture-only group, TBI-only group, and control group. In the first week, blood specimen would be drawn from rats among the groups except those of the control group at three-time points (24, 72 and 168 hours) post-damage...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28425871/the-journey-of-the-non-vascular-relief-for-migraine-from-triptans-to-ditans
#7
Alphienes Stanley Xavier, Mageshwaran Lakshmanan, Vikneswaran Gunaseelan
Migraine is a recurrent, disabling, complex and highly prevalent neurological disorder. The mystery behind the cause of migraine is continuously evolving, according to the scientific understanding of the disease. This growing understanding helps to identify novel therapeutic targets for the management of migraine to treat the ailing migraineurs. The role of serotonin (5HT) in migraine is recognized to be the cornerstone for the currently available therapeutic options namely ergot alkaloids and triptans. The role of mediators such as Calcitonin Gene-Related Peptide (CGRP), nitric oxide and excitatory neurotransmitter glutamate, has been realized and ignited the development of drugs targeting these factors...
April 19, 2017: Current Clinical Pharmacology
https://www.readbyqxmd.com/read/28417590/calcitonin-gene-related-peptide-cgrp-a-novel-target-for-alzheimer-s-disease
#8
REVIEW
Yogendra Singh, Gaurav Gupta, Birendra Shrivastava, Rajiv Dahiya, Juhi Tiwari, Madhu Ashwathanarayana, Rakesh Kumar Sharma, Mohit Agrawal, Anurag Mishra, Kamal Dua
Alzheimer's disease (AD) is leading cause of death among older characterized by neurofibrillary tangles, oxidative stress, progressive neuronal deficits, and increased levels of amyloid-β (Aβ) peptides. Cholinergic treatment could be the best suitable physiological therapy for AD. Calcitonin gene-related peptide (CGRP) is a thirty-seven-amino acid regulatory neuropeptide resulting from different merging of the CGRP gene, which also includes adrenomedullin, amylin, calcitonin, intermedin, and calcitonin receptor-stimulating peptide...
April 17, 2017: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/28417221/co-localization-of-zinc-transporter-3-znt3-with-sensory-neuromediators-and-or-neuromodulators-in-the-enteric-nervous-system-of-the-porcine-esophagus
#9
Joanna Wojtkiewicz, Liliana Rytel, Krystyna Makowska, Sławomir Gonkowski
Zinc transporter 3 (ZnT3) is one of the zinc transporters family. It is closely connected to the nervous system, where enables the transport of zinc ions from the cytoplasm to synaptic vesicles. This substance has been described within the central and peripheral nervous system, especially in the enteric nervous system (ENS). The aim of the present study was to describe the co-localization of ZnT3 with selected neuromediators and/or neuromodulators participating in sensory stimuli conduction in neurons of the ENS within the porcine esophagus...
April 17, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28413467/calcitonin-gene-related-peptide-protects-type-ii-alveolar-epithelial-cells-from-hyperoxia-induced-dna-damage-and-cell-death
#10
Hongmin Fu, Tiesong Zhang, Rongwei Huang, Zhen Yang, Chunming Liu, Ming Li, Fang Fang, Feng Xu
Hyperoxia therapy for acute lung injury (ALI) may unexpectedly lead to reactive oxygen species (ROS) production and cause additional ALI. Calcitonin gene-related peptide (CGRP) is a 37 amino acid neuropeptide that regulates inflammasome activation. However, the role of CGRP in DNA damage during hyperoxia is unclear. Therefore, the aim of the present study was to investigate the effects of CGRP on DNA damage and the cell death of alveolar epithelial type II cells (AEC II) exposed to 60% oxygen. AEC II were isolated from 19-20 gestational day fetal rat lungs and were exposed to air or to 60% oxygen during treatment with CGRP or the specific CGRP receptor antagonist CGRP8-37...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28409893/spotlight-on-anti-cgrp-monoclonal-antibodies-in-migraine-the-clinical-evidence-to-date
#11
REVIEW
Lanfranco Pellesi, Simona Guerzoni, Luigi Alberto Pini
Migraine, a common neurovascular brain disorder, represents a severe and widespread health problem; along with medication-induced (medication-overuse) headache, it is the third-leading cause of disability worldwide. Currently, its therapeutic management remains unsatisfactory for several reasons; up to 40% of migraineurs are eligible for prophylactic treatment, but there are issues of efficacy, safety, and adherence. In recent years the evidence on the role of calcitonin gene-related peptide (CGRP) in migraine pathophysiology has been consolidated, so new and promising treatments for migraine pain and its possible prevention have been developed...
April 14, 2017: Clinical Pharmacology in Drug Development
https://www.readbyqxmd.com/read/28405029/protein-kinase-enzymes-in-the-human-vagina-relation-to-key-mediators-of-the-cyclic-amp-and-cyclic-gmp-pathways
#12
S Ückert, J Sonnenberg, J E Sonnenberg, W Kauffels, K Albrecht, M A Kuczyk, P Hedlund
Aside from phosphodiesterase (PDE) isoenzymes, protein kinases (cAK=cyclic AMP-binding protein kinase, cGK=cyclic GMP-binding protein kinase) have also been identified as important receptors for cyclic nucleotides. A significance of protein kinases in the control of the function of the male and female reproductive tract has been suggested; however, up until today, only a few approaches have addressed these enzymes in female genital tissues. The present study aimed to investigate by means of biochemical and immunohistochemical methods the expression of cAK and cGK...
April 13, 2017: International Journal of Impotence Research
https://www.readbyqxmd.com/read/28404507/paclitaxel-inhibits-the-activity-and-membrane-localization-of-pkc%C3%AE-and-pkc%C3%AE-i-ii-to-elicit-a-decrease-in-stimulated-calcitonin-gene-related-peptide-release-from-cultured-sensory-neurons
#13
Lisa M Darby, Hongdi Meng, Jill C Fehrenbacher
Peripheral neuropathy is a dose-limiting and debilitating side effect of the chemotherapeutic drug, paclitaxel. Consequently, elucidating the mechanisms by which this drug alters sensory neuronal function is essential for the development of successful therapeutics for peripheral neuropathy. We previously demonstrated that chronic treatment with paclitaxel (3-5days) reduces neuropeptide release stimulated by agonists of TRPV1. Because the activity of TRPV1 channels is modulated by conventional and novel PKC isozymes (c/nPKC), we investigated whether c/nPKC mediate the loss of neuropeptide release following chronic treatment with paclitaxel (300nM; 3 and 5days)...
April 9, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/28402679/inhibition-of-osteogenesis-surrounding-the-titanium-implant-by-cgrp-deficiency
#14
Yao Liu, Guangsen Zheng, Li Liu, Zhi Wang, Yiyao Wang, Qianming Chen, En Luo
Previous studies have suggested one of neurotransmitters, calcitonin gene-related peptide (CGRP), modulates local regulation of bone metabolism; however, the regulating signaling pathway is still being explored. The objective of this study was to determine whether CGRP deficiency affects the osteogenesis surrounding titanium implants in vivo. Titanium screws were implanted in 72 adult rats, which were divided into three groups randomly: Sham, inferior alveolar neurectomy (IAN), and IAN+CGRP. Saline solution containing CGRP (concentration: 100 nmol/L) was injected into the area surrounding the implants in the IAN+CGRP group every day post operation...
April 12, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28393079/tyrosine-phosphorylation-of-nr2b-contributes-to-chronic-migraines-via-increased-expression-of-cgrp-in-rats
#15
Xiping Liang, Sha Wang, Guangcheng Qin, Jingmei Xie, Ge Tan, Jiying Zhou, Devin W McBride, Lixue Chen
Tyrosine phosphorylation of NR2B (NR2B-pTyr), a subunit of the N-methyl-D-aspartate (NMDA) receptor, has been reported to develop central sensitization and persistent pain in the spine, but its effect in chronic migraines has not been examined. We hypothesized that tyrosine phosphorylation of NR2B contributes to chronic migraines (CM) through calcitonin gene-related peptide (CGRP) in rats. Ninety-four male Sprague-Dawley rats were subjected to seven inflammatory soup (IS) injections. In a subset of animals, the time course and location of NR2B tyrosine phosphorylation were detected by western blot and immunofluorescence double staining...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28389966/the-effect-and-safety-of-monoclonal-antibodies-to-calcitonin-gene-related-peptide-and-its-receptor-on-migraine-a-systematic-review-and-meta-analysis
#16
Min Hou, Haiyan Xing, Yongqing Cai, Bin Li, Xianfeng Wang, Pan Li, Xiaolin Hu, Jianhong Chen
BACKGROUND: Migraine has been recognized as one of the leading causes of disability in the 2013 Global Burden of Disease Study and seriously affects the quality of patients' life, current treatment options are not ideal. Monoclonal antibodies to calcitonin gene-related peptide and its receptor (CGRP-mAbs) appear more promising for migraine because of considerably better effect and safety profiles. The objective of this study is to systematically assess the clinical efficacy and safety of CGRP-mAbs for migraine therapy...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28387421/apn-cd13-is-over-expressed-by-psoriatic-fibroblasts-and-is-modulated-by-cgrp-and-il-4-but-not-by-retinoic-acid-treatment
#17
Pascale Gerbaud, Jean Guibourdenche, Rafika Jarray, Marc Conti, Patricia Palmic, Stéphanie Leclerc-Mercier, Julie Bruneau, Olivier Hermine, Yves Lepelletier, Françoise Raynaud
Psoriasis vulgaris is a common skin inflammatory disease characterized by recurrent flare episodes associated with scaly well-demarcated skin plaques. Skin biopsies from psoriatic patients with high PASI score (22.67 ± 8.67) and from HD were used to study APN/CD13. APN/CD13 is over-expressed in LP and nLP compare to HD skins and fibroblasts. This over-expression is positively correlated with specific enzymatic activity enhancement. However, discrepancies between APN/CD13 expression in LP and nLP prompt us to focus our study on APN/CD13 modulation...
April 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28386145/significance-of-stat3-signaling-in-epithelial-cell-differentiation-of-fetal-mouse-lungs
#18
Hiroki Kameyama, Shinji Kudoh, Jun Hatakeyama, Akira Matuo, Takaaki Ito
To study the significance of signal transducer and activator of transcription (Stat) 3 in lung epithelial development of fetal mice, we examined fetal mouse lungs, focusing on the expression of Clara cell secretory protein (CCSP), Forkhead box protein J1 (Foxj1), calcitonin gene-related peptide (CGRP), phosphorylated Stat3 (Tyr705), and hairy/enhancer of split (Hes) 1, and observed cultured fetal lungs upon treatment with IL-6, a Stat3 activator, or cucurbitacin I, a Stat3 inhibitor. Moreover, the interaction of Stat3 signaling and Hes1 was studied using Hes1 gene-deficient mice...
February 28, 2017: Acta Histochemica et Cytochemica
https://www.readbyqxmd.com/read/28381446/cutaneous-trpm8-expressing-sensory-afferents-are-a-small-population-of-neurons-with-unique-firing-properties
#19
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/28371926/sensory-innervation-of-perivascular-adipose-tissue-a-crucial-role-in-artery-vasodilatation-and-leptin-release
#20
Hamidah Abu Bakar, William Robert Dunn, Craig Daly, Vera Ralevic
Aims: Electrical field stimulation (EFS) elicits robust sensory neurogenic relaxation responses in the rat isolated mesenteric arterial bed but these responses are absent or difficult to demonstrate in isolated arteries. We believe that this mismatch is due to the absence of perivascular adipose tissue (PVAT) as it is conventionally removed in studies on isolated vessels. We aimed to determine whether sensory nerves are expressed in PVAT, their physiological roles and their possible interactions with PVAT-derived adipokines...
March 23, 2017: Cardiovascular Research
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