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https://www.readbyqxmd.com/read/28095752/isolation-and-identification-of-a-humantrpv1-activating-compound-from-soy-sauce
#1
Mayu Oshida, Yasunori Matsuura, Shinnosuke Hotta, Jun Watanabe, Yoshinobu Mogi, Tatsuo Watanabe
Transient receptor potential vanilloid 1 (TRPV1) was identified as a receptor of capsaicin, which is a pungent ingredient in hot red peppers. Due to its relevance for nociception, a physiological and pharmacological study of TRPV1 has also been developed. Therefore, it is important to enrich scientific knowledge regarding the TRPV1 activating or inhibiting compounds. In this study, we fractionated soy sauce based on the human TRPV1 (hTRPV1) activity using column chromatography and purified 5-(9H-pyrido[3,4-b]indol-1-yl)-2-furanmethanol (perlolyrine) as an hTRPV1-activating compound...
January 18, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28088228/the-loss-of-function-mutations-and-down-regulated-expression-of-asb3-gene-promote-the-growth-and-metastasis-of-colorectal-cancer-cells
#2
Wu-Ying Du, Zhen-Hai Lu, Wen Ye, Xiang Fu, Yi Zhou, Chun-Mei Kuang, Jiang-Xue Wu, Zhi-Zhong Pan, Shuai Chen, Ran-Yi Liu, Wen-Lin Huang
BACKGROUND: Ankyrin repeat and SOCS box protein 3 (ASB3) is a member of ASB family and contains ankyrin repeat sequence and SOCS box domain. Previous studies indicated that it mediates the ubiquitination and degradation of tumor necrosis factor receptor 2 and is likely involved in inflammatory responses. However, its effects on oncogenesis are unclear. This study aimed to investigate the effects of ASB3 on the growth and metastasis of colorectal cancer (CRC). METHODS: We used next-generation sequencing or Sanger sequencing to detect ASB3 mutations in CRC specimens or cell lines, and used real-time quantitative polymerase chain reaction, Western blotting, and immunohistochemical or immunofluorescence assay to determine gene expression...
January 14, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/28087624/tissue-specific-regulation-of-alternative-polyadenylation-represses-expression-of-neuronal-ankyrin-isoform-in-c-elegans-epidermal-development
#3
Fei Chen, Andrew D Chisholm, Yishi Jin
Differential mRNA polyadenylation plays an important role in shaping the neuronal transcriptome. In C. elegans, several ankyrin isoforms are produced from the unc-44 locus through alternative polyadenylation. Here, we identify a key role for an intronic polyadenylation site (PAS) in temporal- and tissue-specific regulation of UNC-44/ankyrin isoforms. Removing an intronic PAS results in ectopic expression of the neuronal ankyrin isoform in non-neural tissues. This mis-expression underlies epidermal developmental defects in mutants of the conserved tumor suppressor death-associated protein kinase, dapk-1 We previously reported that the use of this intronic PAS depends on the nuclear polyadenylation factor SYDN-1, which inhibits the RNA polymerase II CTD phosphatase SSUP-72...
January 13, 2017: Development
https://www.readbyqxmd.com/read/28078079/looking-forward-to-new-targeted-treatments-for-chronic-spontaneous-urticaria
#4
REVIEW
Emek Kocatürk, Marcus Maurer, Martin Metz, Clive Grattan
The introduction of omalizumab to the management of chronic spontaneous urticaria (CSU) has markedly improved the therapeutic possibilities for both, patients and physicians dealing with this disabling disease. But there is still a hard core of patients who do not tolerate or benefit from existing therapies and who require effective treatment. Novel approaches include the use of currently available drugs off-licence, investigational drugs currently undergoing clinical trials and exploring the potential for therapies directed at pathophysiological targets in CSU...
2017: Clinical and Translational Allergy
https://www.readbyqxmd.com/read/28077580/peptide-from-sea-anemone-metridium-senile-affects-transient-receptor-potential-ankyrin-repeat-1-trpa1-function-and-produces-analgesic-effect
#5
Yulia A Logashina, Irina V Mosharova, Yulia V Korolkova, Irina V Shelukhina, Igor A Dyachenko, Victor A Palikov, Yulia A Palikova, Arkadii N Murashev, Sergey A Kozlov, Klara Stensvåg, Yaroslav A Andreev
The transient receptor potential ankyrin-repeat 1 (TRPA1) is an important player in pain and inflammatory pathways. It is a promising target for novel drug development for the treatment of a number of pathological states. A novel peptide producing a significant potentiating effect on allyl isothiocyanate (AITC)- and diclofenac-induced currents of TRPA1 was isolated from the venom of sea anemone Metridium senile. It is a 35-amino-acid peptide cross-linked by two disulfide bridges, named τ-AnmTX Ms 9a-1 (short name Ms 9a-1) according to a structure similar to other sea anemone peptides belonging to structural group 9a...
January 11, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28069669/refining-the-molecular-organization-of-the-cardiac-intercalated-disc
#6
REVIEW
Sarah H Vermij, Hugues Abriel, Toon A B van Veen
This review presents an extensively integrated model of the cardiac intercalated disc (ID), a highly orchestrated structure that connects adjacent cardiomyocytes. Classically, three main structures are distinguished: gap junctions (GJs) metabolically and electrically connect cytoplasm of adjacent cardiomyocytes; adherens junctions (AJs) connect the actin cytoskeleton of adjacent cells; and desmosomes function as cell anchors and connect intermediate filaments. Furthermore, ion channels reside in the ID. Mutations in ID proteins have been associated with cardiac arrhythmias such as Brugada syndrome and arrhythmogenic cardiomyopathy...
January 8, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28057753/a-novel-kleefstra-syndrome-associated-variant-that-affects-the-conserved-tplx-motif-within-the-ankyrin-repeat-of-ehmt1-leads-to-abnormal-protein-folding
#7
Patrick R Blackburn, Alexander Tischer, Michael T Zimmermann, Jennifer L Kemppainen, Sujatha Sastry, Amy E Knight Johnson, Margot A Cousin, Nicole J Boczek, Gavin Oliver, Vinod K Misra, Ralitza H Gavrilova, Gwen A Lomberk, Matthew Auton, Raul A Urrutia, Eric W Klee
Kleefstra syndrome (KS) (MIM# 610253), also known as 9q34 deletion syndrome, is an autosomal dominant disorder caused by haploinsufficiency of euchromatic histone methyltransferase-1 (EHMT1). The clinical phenotype of KS includes moderate to severe intellectual disability with absent speech, hypotonia, brachycephaly, congenital heart defects, and dysmorphic facial features with hypertelorism, synophrys, macroglossia, protruding tongue, and prognathism. Only a few cases of de novo missense mutations in EHMT1 giving rise to KS have been described...
January 5, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28043013/transient-receptor-potential-melastatin-trpm-8-is-expressed-in-freshly-isolated-native-human-odontoblasts
#8
Kento Tazawa, Hideharu Ikeda, Nobuyuki Kawashima, Takashi Okiji
OBJECTIVE: Cold-sensitive ion channels, such as transient receptor potential melastatin (TRPM) 8 and transient receptor potential ankyrin (TRPA) 1, may play a crucial role in the nociceptive function of odontoblasts, whereas expression of these TRP channels in human native odontoblasts remains to be elucidated. This study aimed to analyze the expression of TRPM8 and TRPA1 in freshly isolated native human odontoblasts. DESIGN: Odontoblasts were isolated from freshly extracted healthy human teeth (n=4); after removing the inner pulp tissues from the pulp chambers, odontoblasts remaining on the dentin surface were washed out with phosphate buffered saline and collected...
December 23, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/28039411/nasal-trpa1-mediates-irritant-induced-bradypnea-in-mice
#9
Keiichi Inui, ChangPing Chen, Jordan L Pauli, Chiharu Kuroki, Shogo Tashiro, Yuichi Kanmura, Hideki Kashiwadani, Tomoyuki Kuwaki
Transient receptor potential ankyrin 1 (TRPA1), a member of the TRP superfamily, exists in sensory neurons such as trigeminal neurons innervating the nasal cavity and vagal neurons innervating the trachea and the lung. Although TRPA1 has been proposed as an irritant receptor that, when stimulated, triggers bradypnea, precise locations of the receptors responsible have not been elucidated. Here, we examined the relative importance of TRPA1 located in the upper airway (nasal) and the lower airway (trachea/lungs) in urethane-anesthetized mice...
December 2016: Physiological Reports
https://www.readbyqxmd.com/read/28036141/expression-of-eukaryotic-like-protein-in-the-microbiome-of-sponges
#10
C Díez-Vives, L Moitinho-Silva, S Nielsen, D Reynolds, T Thomas
Eukaryotic-like proteins (ELPs) are classes of proteins that are found in prokaryotes, but have a likely evolutionary origin in eukaryotes. ELPs have been postulated to mediate host-microbiome interactions. Recent work has discovered that prokaryotic symbionts of sponges contain abundant and diverse genes for ELPs, which could modulate interactions with their filter-feeding and phagocytic host. However, the extent to which these ELP genes are actually used and expressed by the symbionts is poorly understood...
December 30, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/28032561/expression-of-transient-receptor-potential-ankyrin-1-correlating-to-the-recovery-of-colonic-transit-after-pelvic-nerve-denervation-in-rats
#11
Weidong Tong, Yue Tian, Hanyong Yang, Li Wang, Song Zhao, Huiwen Shi, Feixiang Dai, Jingwang Ye
BACKGROUND: It has been reported that colorectal motility dysfunction due to pelvic nerve (PN) damage is restored overtime. However, the adaptive mechanism is unknown. Previous studies implied that transient receptor potential ankyrin 1 (TRPA1) mediated sensory nerve signal input plays a crucial role in gut motility regulation. The present study aimed to observe the colorectal motility restoration in rats after PN transection and to explore the change of TRPA1 protein expression in this adaptive process...
October 4, 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/28030623/genome-wide-association-study-for-muscle-fat-content-and-abdominal-fat-traits-in-common-carp-cyprinus-carpio
#12
Xianhu Zheng, Youyi Kuang, Weihua Lv, Dingchen Cao, Zhipeng Sun, Xiaowen Sun
Muscle fat content is an important phenotypic trait in fish, as it affects the nutritional, technical and sensory qualities of flesh. To identify loci and candidate genes associated with muscle fat content and abdominal fat traits, we performed a genome-wide association study (GWAS) using the common carp 250 K SNP assay in a common carp F2 resource population. A total of 18 loci surpassing the genome-wide suggestive significance level were detected for 4 traits: fat content in dorsal muscle (MFdo), fat content in abdominal muscle (MFab), abdominal fat weight (AbFW), and AbFW as a percentage of eviscerated weight (AbFP)...
2016: PloS One
https://www.readbyqxmd.com/read/28030472/epigenetic-divergence-in-the-trpa1-promoter-correlates-with-pressure-pain-thresholds-in-healthy-individuals
#13
Sara Gombert, Mathias Rhein, Mirjam Eberhardt, Tino Münster, Stefan Bleich, Andreas Leffler, Helge Frieling
The expression pattern of important transduction molecules in nociceptive sensory neurons is likely to dictate pain sensitivity. While this notion is well established for increased pain sensitivities under conditions like inflammation and neuropathy, less is known as to which molecules are defining interindividual differences in pain sensitivity in healthy subjects. A genome-wide methylation analysis on monozygotic twins found that methylation of a CpG dinucleotide in the promoter of transient receptor potential ankyrin 1 (TRPA1) is inversely associated with the threshold for heat-induced pain...
December 22, 2016: Pain
https://www.readbyqxmd.com/read/28028720/liuwei-dihuang-pill-treats-postmenopausal-osteoporosis-with-shen-kidney-yin-deficiency-via-janus-kinase-signal-transducer-and-activator-of-transcription-signal-pathway-by-up-regulating-cardiotrophin-like-cytokine-factor-1-expression
#14
Ji-Rong Ge, Li-Hua Xie, Juan Chen, Sheng-Qiang Li, Hui-Juan Xu, Yu-Lian Lai, Long-Long Qiu, Chen-Bo Ni
OBJECTIVES: To investigate the mechanism of Liuwei Dihuang Pill (, LDP) in treating postmenopausal osteoporosis (PMOP) with Shen (Kidney) yin deficiency. METHODS: In this study, 205 cases of PMOP were divided into the PMOP Shen-yin deficiency group (Group A), PMOP Shen-yang deficiency group (Group B), PMOP without Shen deficiency group (Group C), and control group (Group N). Real-time polymerase chain reaction (RT-PCR) and Western blot techniques were used to observe the effects of LDP treatment on the cardiotrophin-like cytokine factor 1 (CLCF1), ankyrin repeat and SOCS box containing 1 (ASB1), and prokineticin 2 (PROK2) genes and the Janus kinase/signal transducer and activator of transcription (JAK/STAT) signaling pathway...
December 27, 2016: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28017670/presynaptic-facilitation-by-tetracaine-of-glutamatergic-spontaneous-excitatory-transmission-in-the-rat-spinal-substantia-gelatinosa-involvement-of-trpa1-channels
#15
Lian-Hua Piao, Tsugumi Fujita, Ting Yu, Eiichi Kumamoto
The amide-type local anesthetic (LA) lidocaine activates transient receptor potential (TRP) ankyrin-1 (TRPA1) channels to facilitate spontaneous L-glutamate release onto spinal substantia gelatinosa (SG) neurons, which play a crucial role in regulating nociceptive transmission. In contrast, the ester-type LA procaine reduces the spontaneous release of L-glutamate in SG neurons. In order to determine whether TRPA1 activation by LAs is specific to amide-types, we examined the actions of tetracaine, another ester-type LA, and other amide-type LAs on glutamatergic spontaneous excitatory transmission in SG neurons by focusing on TRP activation...
December 22, 2016: Brain Research
https://www.readbyqxmd.com/read/28007575/the-mechanism-of-formation-structure-and-physiological-relevance-of-covalent-hemoglobin-attachment-to-the-erythrocyte-membrane
#16
Elizabeth M Welbourn, Michael T Wilson, Ashril Yusof, Metodi V Metodiev, Chris E Cooper
Covalent hemoglobin binding to membranes leads to band 3 (AE1) clustering and the removal of erythrocytes from the circulation; it is also implicated in blood storage lesions. Damaged hemoglobin, with the heme being in a redox and oxygen-binding inactive hemichrome form, has been implicated as the binding species. However, previous studies used strong non-physiological oxidants. In vivo hemoglobin is constantly being oxidised to methemoglobin (ferric), with around 1% of hemoglobin being in this form at any one time...
December 20, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28003466/ultrastructural-anatomy-of-nodes-of-ranvier-in-the-peripheral-nervous-system-as-revealed-by-sted-microscopy
#17
Elisa D'Este, Dirk Kamin, Francisco Balzarotti, Stefan W Hell
We used stimulated emission depletion (STED) superresolution microscopy to analyze the nanoscale organization of 12 glial and axonal proteins at the nodes of Ranvier of teased sciatic nerve fibers. Cytoskeletal proteins of the axon (betaIV spectrin, ankyrin G) exhibit a high degree of one-dimensional longitudinal order at nodal gaps. In contrast, axonal and glial nodal adhesion molecules [neurofascin-186, neuron glial-related cell adhesion molecule (NrCAM)] can arrange in a more complex, 2D hexagonal-like lattice but still feature a ∼190-nm periodicity...
December 21, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28002633/vta-da-neuron-excitatory-synapses-in-shank3-%C3%AE-ex-4-9-mouse-line
#18
Bariselli Sebastiano, Bellone Camilla
SHANK3 proteins belong to the Shank/ProSAP family, which contain five-conserved domains - the ankyrin (ANK) repeated, the Src homology 3 (SH3), the PSD-95/Discs large/ZO-1 (PDZ), the proline-rich and the sterile alpha motif (SAM; Sheng and Kim, 2000). SHANK proteins are located at the postsynaptic density of excitatory synapses and indirectly link the metabotropic (mGluRs) and the ionotropic glutamate receptor (iGluRs: AMPARs, α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors, and NMDARs, N-methyl-D-aspartate receptors) via different domains (Naisbitt et al...
December 21, 2016: Synapse
https://www.readbyqxmd.com/read/27997998/a-novel-bispecific-darpin-targeting-fc%C3%AE-riib-and-fc%C3%AE%C2%B5ri-bound-ige-inhibits-allergic-responses
#19
F Zellweger, P Gasser, D Brigger, P Buschor, M Vogel, A Eggel
BACKGROUND: Binding of allergen-specific IgE to its high-affinity receptor FcεRI on basophils and mast cells is a central event in the development of allergies. Exposure of these cells to allergens induces the release of soluble mediators causing allergic symptoms. The inhibitory low-affinity IgG Fc-receptor FcγRIIB is co-expressed on allergic effector cells and has been implicated in negative regulation of immediate hypersensitivity responses. In order to harvest the inhibitory function of this receptor we aimed to select specific binders against FcγRIIB and to generate a bispecific molecule simultaneously targeting FcγRIIB and FcεRI-bound IgE on the surface of allergic effector cells...
December 20, 2016: Allergy
https://www.readbyqxmd.com/read/27994149/fgf14-is-a-regulator-of-kcnq2-3-channels
#20
Juan Lorenzo Pablo, Geoffrey S Pitt
KCNQ2/3 (Kv7.2/7.3) channels and voltage-gated sodium channels (VGSCs) are enriched in the axon initial segment (AIS) where they bind to ankyrin-G and coregulate membrane potential in central nervous system neurons. The molecular mechanisms supporting coordinated regulation of KCNQ and VGSCs and the cellular mechanisms governing KCNQ trafficking to the AIS are incompletely understood. Here, we show that fibroblast growth factor 14 (FGF14), previously described as a VGSC regulator, also affects KCNQ function and localization...
January 3, 2017: Proceedings of the National Academy of Sciences of the United States of America
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