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https://www.readbyqxmd.com/read/28716263/exogenous-acrolein-intensifies-sensory-hypersensitivity-after-spinal-cord-injury-in-rat
#1
Breanne Butler, Glen Acosta, Riyi Shi
Acrolein, an α,β-unsaturated aldehyde associated with oxidative stress, is also a major toxic component of tobacco cigarette smoke, which has been reported in the clinic to coincide with the exacerbation of neuropathic pain after SCI. Previous reports have shown that acrolein involvement in spinal cord injury (SCI) is crucial to the development and persistence of neuropathic pain. Through the activation and upregulation of the transient receptor protein ankyrin-1 (TRPA1) cation channel, acrolein is capable of sensitizing the central nervous system in the acute and chronic stages of SCI...
August 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28713955/altered-axon-initial-segment-in-hippocampal-newborn-neurons-associated-with-recurrence-of-temporal-lobe-epilepsy-in-rats
#2
Tian-Tian Liu, Li Feng, Heng-Fang Liu, Yi Shu, Bo Xiao
Hippocampal neurogenesis in temporal lobe epilepsy (TLE) may result in alteration of the excitability of neurons, which contributes to spontaneous recurrent seizures. Axon initial segment (AIS) structural and functional plasticity is important in the control of neuronal excitability. It remains to be elucidated whether the plasticity of AIS occurs in hippocampal newly‑generated neurons that are involved in recurrent seizures following pilocarpine‑induced status epilepticus (SE). The present study first established a pilocarpine‑induced TLE rat model to assess the features of newborn neurons and AIS plasticity alterations using double immunofluorescence staining of Ankyrin G and doublecortin (DCX)...
July 15, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28712031/human-skeletal-muscle-type-1-fibre-distribution-and-response-of-stress-sensing-proteins-along-the-titin-molecule-after-submaximal-exhaustive-exercise
#3
Satu O A Koskinen, Heikki Kyröläinen, Riina Flink, Harri P Selänne, Sheila S Gagnon, Juha P Ahtiainen, Bradley C Nindl, Maarit Lehti
Early responses of stress-sensing proteins, muscle LIM protein (MLP), ankyrin repeat proteins (Ankrd1/CARP and Ankrd2/Arpp) and muscle-specific RING finger proteins (MuRF1 and MuRF2), along the titin molecule were investigated in the present experiment after submaximal exhaustive exercise. Ten healthy men performed continuous drop jumping unilaterally on a sledge apparatus with a submaximal height until complete exhaustion. Five stress-sensing proteins were analysed by mRNA measurements from biopsies obtained immediately and 3 h after the exercise from exercised vastus lateralis muscle while control biopsies were obtained from non-exercised legs before the exercise...
July 15, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28701918/striatal-transcriptome-and-interactome-analysis-of-shank3-overexpressing-mice-reveals-the-connectivity-between-shank3-and-mtorc1-signaling
#4
Yeunkum Lee, Sun Gyun Kim, Bokyoung Lee, Yinhua Zhang, Yoonhee Kim, Shinhyun Kim, Eunjoon Kim, Hyojin Kang, Kihoon Han
Mania causes symptoms of hyperactivity, impulsivity, elevated mood, reduced anxiety and decreased need for sleep, which suggests that the dysfunction of the striatum, a critical component of the brain motor and reward system, can be causally associated with mania. However, detailed molecular pathophysiology underlying the striatal dysfunction in mania remains largely unknown. In this study, we aimed to identify the molecular pathways showing alterations in the striatum of SH3 and multiple ankyrin repeat domains 3 (Shank3)-overexpressing transgenic (TG) mice that display manic-like behaviors...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28698781/idiopathic-pulmonary-embolism-in-a-case-of-severe-family-ankrd26-thrombocytopenia
#5
Jerome Guison, Gilles Blaison, Oana Stoica, Remy Hurstel, Marie Favier, Remy Favier
Venous thrombosis affecting thrombocytopenic patients is challenging. We report the case of a woman affected by deep vein thrombosis and pulmonary embolism in a thrombocytopenic context leading to the discovery of a heterozygous mutation in the gene encoding ankyrin repeat domain 26 (ANKRD26) associated with a heterozygous factor V (FV) Leiden mutation. This woman was diagnosed with lower-limb deep vein thrombosis complicated by pulmonary embolism. Severe thrombocytopenia was observed. The genetic study evidenced a heterozygous FV Leiden mutation...
2017: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/28695526/identifying-and-validating-tankyrase-binders-and-substrates-a-candidate-approach
#6
Katie Pollock, Michael Ranes, Ian Collins, Sebastian Guettler
The poly(ADP-ribose)polymerase (PARP) enzyme tankyrase (TNKS/ARTD5, TNKS2/ARTD6) uses its ankyrin repeat clusters (ARCs) to recognize degenerate peptide motifs in a wide range of proteins, thereby recruiting such proteins and their complexes for scaffolding and/or poly(ADP-ribosyl)ation. Here, we provide guidance for predicting putative tankyrase-binding motifs, based on the previously delineated peptide sequence rules and existing structural information. We present a general method for the expression and purification of tankyrase ARCs from Escherichia coli and outline a fluorescence polarization assay to quantitatively assess direct ARC-TBM peptide interactions...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28694302/up-regulation-of-ankdr49-a-poor-prognostic-factor-regulates-cell-proliferation-of-gliomas
#7
Chunyan Hao, Hubin Duan, Hao Li, Mingyang Pei, Yueting Liu, Yimin Fan, Ce Zhang
The Ankyrin repeat domain 49 (ANKRD49) is an evolutionarily conserved protein, which is related to mediate protein-protein interaction. However, the function of ANKRD49 in human glioma remains elusive. Through mining The Cancer Genome Atlas (TCGA) database, we found that the expression of ANKRD49 was increased in glioma tissues and that high expression of ANKRD49 was strongly associated with high disease grade and poor overall survival. To investigate the role of ANKRD49 in malignant glioma, lentivirus expressing shRNA targeting ANKRD49 was constructed in U251 and U87 malignant glioma cells...
July 10, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28692740/switching-of-%C3%AE-catenin-from-epithelial-to-neuronal-type-during-lens-epithelial-cell-differentiation
#8
Rupalatha Maddala, Ponugoti Vasantha Rao
Purpose: Ocular lens fiber cell elongation, differentiation, and compaction are associated with extensive reorganization of cell adhesive interactions and cytoskeleton; however, our knowledge of proteins critical to these events is still evolving. This study characterizes the distribution pattern of neuronal-specific α-catenin (αN-catenin) and its interaction with the N-cadherin-associated adherens junctions (AJs) and their stability in the mouse lens fibers. Methods: Expression and distribution of αN-catenin in developing mouse and adult human lenses was determined by RT-PCR, immunoblot, and immunofluorescence analyses...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28687526/first-de-novo-ank3-nonsense-mutation-in-a-boy-with-intellectual-disability-speech-impairment-and-autistic-features
#9
Katja Kloth, Jonas Denecke, Maja Hempel, Jessika Johannsen, Tim M Strom, Christian Kubisch, Davor Lessel
Ankyrin-G, encoded by ANK3, plays an important role in neurodevelopment and neuronal function. There are multiple isoforms of Ankyrin-G resulting in differential tissue expression and function. Heterozygous missense mutations in ANK3 have been associated with autism spectrum disorder. Further, in three siblings a homozygous frameshift mutation affecting only the longest isoform and a patient with a balanced translocation disrupting all isoforms were documented. The latter four patients were affected by a variable degree of intellectual disability, attention deficit hyperactivity disorder and autism...
July 4, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/28679357/genome-scale-analysis-of-regulatory-protein-acetylation-enzymes-from-photosynthetic-eukaryotes
#10
R Glen Uhrig, Pascal Schläpfer, Devang Mehta, Matthias Hirsch-Hoffmann, Wilhelm Gruissem
BACKGROUND: Reversible protein acetylation occurring on Lys-N(e) has emerged as a key regulatory post-translational modification in eukaryotes. It is mediated by two groups of enzymes: lysine acetyltransferases (KATs) and lysine deacetylases (KDACs) that catalyze the addition and removal of acetyl groups from target proteins. Estimates indicate that protein acetylation is second to protein phosphorylation in abundance, with thousands of acetylated sites now identified in different subcellular compartments...
July 5, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28674258/roles-of-transient-receptor-potential-ankyrin-1-in-oxaliplatin-induced-peripheral-neuropathy
#11
Takayuki Nakagawa, Shuji Kaneko
Chemotherapy-induced peripheral neuropathy (CIPN), characterized by symptoms of paresthesia, dysesthesia, numbness, and pain, is a common adverse effect of several chemotherapeutic agents, including platinum-based agents, taxanes, and vinca alkaloids. However, no effective prevention or treatment strategies exist for CIPN because the mechanisms underpinning this neuropathy are poorly understood. Recent accumulating evidence suggests that some transient receptor potential (TRP) channels functioning as nociceptors in primary sensory neurons are responsible for CIPN...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28672880/ankyrin-repeat-domain-1-protein-a-functionally-pleiotropic-protein-with-cardiac-biomarker-potential
#12
REVIEW
Samantha S M Ling, Yei-Tsung Chen, Juan Wang, Arthur M Richards, Oi Wah Liew
The ankyrin repeat domain 1 (ANKRD1) protein is a cardiac-specific stress-response protein that is part of the muscle ankyrin repeat protein family. ANKRD1 is functionally pleiotropic, playing pivotal roles in transcriptional regulation, sarcomere assembly and mechano-sensing in the heart. Importantly, cardiac ANKRD1 has been shown to be highly induced in various cardiomyopathies and in heart failure, although it is still unclear what impact this may have on the pathophysiology of heart failure. This review aims at highlighting the known properties, functions and regulation of ANKRD1, with focus on the underlying mechanisms that may be involved...
June 26, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28669932/cough-and-airway-disease-the-role-of-ion-channels
#13
REVIEW
Sara J Bonvini, Maria G Belvisi
Cough is the most common reason for patients to visit a primary care physician, yet it remains an unmet medical need. It can be idiopathic in nature but can also be a troublesome symptom across chronic lung diseases such as asthma, COPD and idiopathic pulmonary fibrosis (IPF). Chronic cough affects up to 12% of the population and yet there are no safe and effective therapies. The cough reflex is regulated by vagal, sensory afferent nerves which innervate the airway. The Transient Receptor Potential (TRP) family of ion channels are expressed on sensory nerve terminals, and when activated can evoke cough...
June 29, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28658211/electron-cryo-microscopy-structure-of-the-mechanotransduction-channel-nompc
#14
Peng Jin, David Bulkley, Yanmeng Guo, Wei Zhang, Zhenhao Guo, Walter Huynh, Shenping Wu, Shan Meltzer, Tong Cheng, Lily Yeh Jan, Yuh-Nung Jan, Yifan Cheng
Mechanosensory transduction for senses such as proprioception, touch, balance, acceleration, hearing and pain relies on mechanotransduction channels, which convert mechanical stimuli into electrical signals in specialized sensory cells. How force gates mechanotransduction channels is a central question in the field, for which there are two major models. One is the membrane-tension model: force applied to the membrane generates a change in membrane tension that is sufficient to gate the channel, as in the bacterial MscL channel and certain eukaryotic potassium channels...
June 26, 2017: Nature
https://www.readbyqxmd.com/read/28656709/zingiberis-siccatum-rhizoma-the-active-component-of-the-kampo-formula-daikenchuto-induces-anti-inflammatory-actions-through-%C3%AE-7-nicotinic-acetylcholine-receptor-activation
#15
M Endo, M Hori, T Mihara, H Ozaki, T Oikawa, H Odaguchi, T Hanawa
BACKGROUND: We previously reported that Daikenchuto (DKT), a gastrointestinal prokinetic Japanese herbal (Kampo) medicine used for the treatment of postoperative ileus (POI), has characteristic potent anti-inflammatory activity. This effect may be partly mediated by the activation of α7 nicotinic acetylcholine receptor (nAChR). In this study, we identified the specific herbs in DKT that induce anti-inflammatory action. METHODS: The herbal components of DKT were individually administered orally to each mouse four times before and after intestinal manipulation (IM) was carried out on the distal ileum...
June 28, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28655594/transcriptome-profiling-and-expression-analysis-of-immune-responsive-genes-in-the-liver-of-golden-mahseer-tor-putitora-challenged-with-aeromonas-hydrophila
#16
Rohit Kumar, Prabhati K Sahoo, Ashoktaru Barat
Transcriptome profiling has been used to decipher the novel mechanisms behind immune responses of the fishes. However, the molecular mechanism underlining immune response in mahseer is not studied so far. Fishes are greatly affected by bacterial pathogens such as Aeromonas hydrophila. In this study, transcriptome response of golden mahseer (Tor putitora) infected with A. hydrophila was examined using paired end Illumina sequencing of liver tissue to understand the immune response of the fish. The de novo assembly generated 61,042 unigenes ranging from 200 to 9322 bp in length and an average length of 463 bp...
August 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28655565/environmental-enrichment-attenuates-behavioral-abnormalities-in-valproic-acid-exposed-autism-model-mice
#17
Hiroshi Yamaguchi, Yuta Hara, Yukio Ago, Erika Takano, Shigeru Hasebe, Takanobu Nakazawa, Hitoshi Hashimoto, Toshio Matsuda, Kazuhiro Takuma
We recently demonstrated that prenatal exposure to valproic acid (VPA) at embryonic day 12.5 causes autism spectrum disorder (ASD)-like phenotypes such as hypolocomotion, anxiety-like behavior, social deficits and cognitive impairment in mice and that it decreases dendritic spine density in the hippocampal CA1 region. Previous studies show that some abnormal behaviors are improved by environmental enrichment in ASD rodent models, but it is not known whether environmental enrichment improves cognitive impairment...
June 24, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28640016/h2o2-induces-muscle-nociception-via-transient-receptor-potential-ankyrin-1-receptors
#18
Daisuke Sugiyama, Sinyoung Kang, Nicholas Arpey, Preeyaphan Arunakul, Yuriy M Usachev, Timothy J Brennan
BACKGROUND: H2O2 has a variety of actions in skin wounds but has been rarely studied in deep muscle tissue. Based on response to the transient receptor potential ankyrin 1 antagonists after plantar incision, we hypothesized that H2O2 exerts nociceptive effects via the transient receptor potential ankyrin 1 in muscle. METHODS: Nociceptive behaviors in rats (n = 269) and mice (n = 16) were evaluated after various concentrations and volumes of H2O2 were injected into the gastrocnemius muscle or subcutaneous tissue...
June 21, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28639341/rigidity-of-the-extracellular-part-of-her2-evidence-from-engineering-subdomain-interfaces-and-shared-helix-darpin-darpin-fusions
#19
Christian Jost, Jakob C Stüber, Annemarie Honegger, Yufan Wu, Alexander Batyuk, Andreas Plückthun
The second member of the human ErbB family of receptor tyrosine kinases, HER2/hErbB2, is regarded as an exceptional case: The four extracellular subdomains could so far only be found in one fixed overall conformation, designated "open" and resembling the ligand-bound form of the other ErbB receptors. It thus appears to be different from the extracellular domains of the other family members that show inter-subdomain flexibility and exist in a "tethered" form in the absence of ligand. For HER2, there was so far no direct evidence for such a tethered conformation on the cell surface...
June 22, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28634442/mild-traumatic-brain-injury-evokes-pyramidal-neuron-axon-initial-segment-plasticity-and-diffuse-presynaptic-inhibitory-terminal-loss
#20
Michal Vascak, Jianli Sun, Matthew Baer, Kimberle M Jacobs, John T Povlishock
The axon initial segment (AIS) is the site of action potential (AP) initiation, thus a crucial regulator of neuronal activity. In excitatory pyramidal neurons, the high density of voltage-gated sodium channels (NaV1.6) at the distal AIS regulates AP initiation. A surrogate AIS marker, ankyrin-G (ankG) is a structural protein regulating neuronal functional via clustering voltage-gated ion channels. In neuronal circuits, changes in presynaptic input can alter postsynaptic output via AIS structural-functional plasticity...
2017: Frontiers in Cellular Neuroscience
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