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Calcitonin

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https://www.readbyqxmd.com/read/28944148/metastatic-neuroendocrine-tumor-of-the-esophagus-with-features-of-medullary-thyroid-carcinoma
#1
Raymond M Fertig, Adam Alperstein, Carlos Diaz, Kyle D Klingbeil, Sameera S Vangara, Ryosuke Misawa, Jennifer Reed, Sudeep Gaudi
A 41-year-old female presented with a pedunculated mass in the upper esophagus and bilateral lymphadenopathy. Biopsies suggested a neuroendocrine tumor, possibly carcinoid, and ensuing imaging revealed cervical lymph node metastases. The esophageal mass was removed endoscopically and discovered by pathologists to closely resemble medullary thyroid carcinoma (MTC) on immunohistochemistry staining. Following surgery, further work up demonstrated very high serum calcitonin levels, suggestive of medullary thyroid carcinoma, however the thyroid gland was normal on ultrasound...
August 2017: Intractable & Rare Diseases Research
https://www.readbyqxmd.com/read/28943896/a-large-chinese-pedigree-of-multiple-endocrine-neoplasia-type-2a-with-a-novel-c634y-d707e-germline-mutation-in-ret-exon-11
#2
Fanqian Lu, Xiaohong Chen, Yunlong Bai, Yaru Feng, Jian Wu
The present study identified the clinical features of the largest multiple endocrine neoplasia type 2 (MEN2) A pedigree from China, with a novel double missense rearranged during transfection (RET) mutation (C634Y/D707E). To the best of our knowledge, the D707E mutation has not been identified to date. In the present study, a total of 101 family members who originated from a large pedigree (134 members in total) underwent RET mutation screening by next-generation sequencing and polymerase chain reaction (PCR) amplification, followed by direct bidirectional DNA sequencing...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28943756/slick-kcnt2-sodium-activated-potassium-channels-limit-peptidergic-nociceptor-excitability-and-hyperalgesia
#3
Danielle L Tomasello, Edward Hurley, Lawrence Wrabetz, Arin Bhattacharjee
The Slick (Kcnt2) sodium-activated potassium (KNa) channel is a rapidly gating and weakly voltage-dependent and sodium-dependent potassium channel with no clearly defined physiological function. Within the dorsal root ganglia (DRGs), we show Slick channels are exclusively expressed in small-sized and medium-sized calcitonin gene-related peptide (CGRP)-containing DRG neurons, and a pool of channels are localized to large dense-core vesicles (LDCV)-containing CGRP. We stimulated DRG neurons for CGRP release and found Slick channels contained within CGRP-positive LDCV translocated to the neuronal membrane...
2017: Journal of Experimental Neuroscience
https://www.readbyqxmd.com/read/28939753/how-glycosaminoglycans-promote-fibrillation-of-salmon-calcitonin
#4
Kirsten Gade Malmos, Morten Bjerring, Christian Moestrup Jessen, Erik Holm Toustrup Nielsen, Ebbe T Poulsen, Gunna Christiansen, Thomas Vosegaard, Troels Skrydstrup, Jan J Enghild, Jan Skov Pedersen, Daniel E Otzen
No abstract text is available yet for this article.
September 22, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28938149/the-genetic-influence-in-fluorosis
#5
REVIEW
Sreemanta Pramanik, Depanwita Saha
Fluorosis, caused by ingestion of excess fluoride, is endemic in at least 25 countries across the globe, China and India being the worst affected among them. Dental, skeletal and non-skeletal are the major types of fluorosis affecting millions of people in these countries. A number of genetic epidemiological studies carried out by investigators have shown the evidence for association between genetic polymorphisms in candidate genes and differences in the susceptibility pattern of different types of fluorosis among individuals living in the same community and having the same environmental exposure...
September 15, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28935683/synaptic-activation-of-putative-sensory-neurons-by-hexamethonium-sensitive-nerve-pathways-in-mouse-colon
#6
Timothy James Hibberd, Lee Travis, Lukasz Wiklendt, Marcello C Costa, Simon J H Brookes, Hongzhen Hu, Damien John Keating, Nick J Spencer
The gastrointestinal tract contains its own independent population of sensory neurons within the gut wall. These sensory neurons have been referred to as intrinsic primary afferent neurons (IPANs) and can be identified by immunoreactivity to calcitonin gene related peptide (CGRP) in mice. A common feature of IPANs is a paucity of fast synaptic inputs observed during sharp microelectrode recordings. Whether this is observed using different recording techniques is of particular interest for understanding the physiology of these neurons and neural circuit modelling...
September 21, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28931832/mediating-role-of-trpv1-ion-channels-in-the-co-exposure-to-pm2-5-and-formaldehyde-of-balb-c-mice-asthma-model
#7
Jing Song, Jun Kang, Bencheng Lin, Jinquan Li, Yuqing Zhu, Junting Du, Xu Yang, Zhuge Xi, Rui Li
Asthma is a complex pulmonary inflammatory disease that can be promoted by air pollutants such as PM2.5 and formaldehyde (FA). However, existent experimental evidence principally focuses on the negative influence of a single air pollutant, neglecting the possible synergistic effect in biological responses to mixture of these pollutants, a more common situation in our daily life. In this study, allergic Balb/c mice were exposed to a mixture of PM2.5 and FA, and their toxicological effects and mechanisms were explored...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28931560/ret-mediated-modulation-of-tumour-microenvironment-and-immune-response-in-men2
#8
Maria Domenica Castellone, Rosa Marina Melillo
Medullary thyroid carcinomas (MTC) arise from thyroid parafollicular, calcitonin-producing C-cells and can occur either as sporadic or as hereditary diseases in the context of familial syndromes, including multiple endocrine neoplasia 2A (MEN2A), multiple endocrine neoplasia 2B (MEN2B) and familial MTC (FMTC). In a large fraction of sporadic cases, and virtually in all inherited cases of MTC, activating point mutations of the RET proto-oncogene are found. RET encodes for a receptor tyrosine kinase protein endowed with transforming potential on thyroid parafollicular cells...
September 20, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28929017/calcitonin-receptor-expression-in-medullary-thyroid-carcinoma
#9
Virginia Cappagli, Catarina Soares Potes, Luciana Bueno Ferreira, Catarina Tavares, Catarina Eloy, Rossella Elisei, Manuel Sobrinho-Simões, Peter J Wookey, Paula Soares
BACKGROUND: Calcitonin expression is a well-established marker for medullary thyroid carcinoma (MTC); yet the role of calcitonin receptor (CTR), its seven-transmembrane G-protein coupled receptor, remains to be established in C-cells derived thyroid tumors. The aim of this work was to investigate CTR expression in MTC and to correlate such expression with clinicopathological features in order to evaluate its possible role as a prognostic indicator of disease aggressiveness and outcome...
2017: PeerJ
https://www.readbyqxmd.com/read/28927353/recurrent-metastatic-medullary-thyroid-carcinoma-a-case-of-sustained-response-to-prolonged-treatment-with-somatostatin-analogues
#10
Juana María Cano, Rocío Galán, Rafael López
BACKGROUND: Medullary thyroid carcinoma (MTC) is a rare disease. Treatment options for recurrent disease are limited. Somatostatin analogues might have a role as anticancer agents agents in MTC, although the evidence is inconclusive. PATIENT FINDINGS: A 64-year old male was diagnosed with MTC in January 2010. Total thyroidectomy with neck dissection (stage IVA, pT2pN1bM0, R1) was performed, followed by adjuvant locoregional radiotherapy. Two years later, the patient developed recurrent metastatic disease evidenced by elevated carcinoembryonic antigen (CEA) and calcitonin levels, and a positive uptake (Octreoscan®) in the right adrenal gland and pancreatic head...
September 19, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28925503/quantitative-analysis-of-mouse-dural-afferent-neurons-expressing-trpm8-vglut3-and-nf200
#11
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
#12
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/28917083/effects-of-single-or-combined-administration-of-salmon-calcitonin-and-omega-3-fatty-acids-versus-diclofenac-sodium-in-sodium-monoiodoacetate-induced-knee-osteoarthritis-in-male-wistar-rats
#13
Wale J Adeyemi, Luqman A Olayaki
BACKGROUND: There is a continuous search for a better therapy in osteoarthritis (OA) management. Therefore, this study investigated the effects of salmon calcitonin (Sct) and/or omega-3 fatty acids (N-3) relative to diclofenac sodium (DF) in induced knee osteoarthritic male Wistar rats. METHODS: The 40 rats that were used in this study were divided into 8 groups (n=5 rats), viz: Normal control; OA control; OA+N-3; OA+Low dose of Sct (Sct.Lw); OA+High dose of Sct (Sct...
September 16, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28914594/salivary-neuropeptides-stress-and-periodontitis
#14
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/28911729/chemotherapy-and-tyrosine-kinase-inhibitors-for-medullary-thyroid-cancer
#15
REVIEW
Julien Hadoux, Martin Schlumberger
Medullary thyroid cancer (MTC) represents 3% of all clinical thyroid cancers and arises from thyroid C cells that produce calcitonin. Locally advanced or metastatic MTC requires a careful work-up including measurement of serum calcitonin and carcinoembryonic antigen, determination of their doubling time and comprehensive imaging to determine the extent of the disease, its aggressiveness, and the need for treatment. Cytotoxic chemotherapy can control tumor burden in some patients with response rates of around 20% in old series...
June 2017: Best Practice & Research. Clinical Endocrinology & Metabolism
https://www.readbyqxmd.com/read/28911154/prognostic-significance-of-circulating-ret-m918t-mutated-tumor-dna-in-patients-with-advanced-medullary-thyroid-carcinoma
#16
Gilbert J Cote, Caitlin Evers, Mimi I Hu, Elizabeth G Grubbs, Michelle D Williams, Tao Hai, Dzifa Y Duose, Michal R Houston, Jacquelin H Bui, Meenakshi Mehrotra, Steven G Waguespack, Naifa L Busaidy, Maria E Cabanillas, Mouhammed Amir Habra, Rajyalakshmi Luthra, Steven I Sherman
Context: Interpretation of calcitonin measurement to predict the prognosis of medullary thyroid carcinoma (MTC) requires multiple measurements over an extended time period, making it an imperfect biomarker for evaluating prognosis or disease behavior. Single circulating cell-free DNA (cfDNA) values have been shown to be a valuable prognostic marker for several solid tumors. Objective: We tested the hypothesis that cfDNA containing the RET M918T mutation could be detected in the blood of patients with advanced MTC whose tumor harbored an M918T mutation and would be able to predict overall survival more reliably than calcitonin...
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28904253/genetic-variants-of-ramp2-and-clr-are-associated-with-stroke
#17
Teruhide Koyama, Nagato Kuriyama, Etsuko Ozaki, Daisuke Matsui, Isao Watanabe, Wakiko Takeshita, Komei Iwai, Yoshiyuki Watanabe, Masahiro Nakatochi, Chisato Shimanoe, Keitaro Tanaka, Isao Oze, Hidemi Ito, Hirokazu Uemura, Sakurako Katsuura-Kamano, Rie Ibusuki, Ippei Shimoshikiryo, Naoyuki Takashima, Aya Kadota, Sayo Kawai, Tae Sasakabe, Rieko Okada, Asahi Hishida, Mariko Naito, Kiyonori Kuriki, Kaori Endoh, Norihiro Furusyo, Hiroaki Ikezaki, Sadao Suzuki, Akihiro Hosono, Haruo Mikami, Yohko Nakamura, Michiaki Kubo, Kenji Wakai
AIM: Stroke is associated closely with vascular homeostasis, and several complex processes and interacting pathways, which involve various genetic and environmental factors, contribute to the risk of stroke. Although adrenomedullin (ADM) has a number of physiological and vasoprotective functions, there are few studies of the ADM receptor system in humans. The ADM receptor comprises a calcitonin-receptor-like receptor (CLR) and receptor activity-modifying proteins (RAMPs). We analyzed single nucleotide polymorphisms (SNPs) in the RAMP2 and CLR genes to determine their association with stroke in the light of gene-environment interactions...
September 14, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28904199/calcitonin-gene-related-peptide-induces-hiv-1-proteasomal-degradation-in-mucosal-langerhans-cells
#18
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
#19
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
#20
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
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