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https://www.readbyqxmd.com/read/27836492/crmp1-and-crmp4-are-required-for-proper-orientation-of-dendrites-of-cerebral-pyramidal-neurons-in-the-developing-mouse-brain
#1
Ryosuke Takaya, Jun Nagai, Wenfui Piao, Emi Niisato, Takeru Nakabayashi, Yuki Yamazaki, Fumio Nakamura, Naoya Yamashita, Papachan Kolattukudy, Yoshio Goshima, Toshio Ohshima
Neural circuit formation is a critical process in brain development. Axon guidance molecules, their receptors, and intracellular mediators are important to establish neural circuits. Collapsin response mediator proteins (CRMPs) are known intercellular mediators of a number of repulsive guidance molecules. Studies of mutant mice suggest roles of CRMPs in dendrite development. However, molecular mechanisms of CRMP-mediated dendritic development remain to elucidate. In this study, we show abnormal orientation of basal dendrites (extension to deeper side) of layer V pyramidal neurons in the cerebral cortex of CRMP4-/- mice...
November 8, 2016: Brain Research
https://www.readbyqxmd.com/read/27787857/micro-cali-to-study-localized-roles-of-the-semaphorin-signaling-component-crmp-in-axon-growth
#2
Yoshio Goshima, Kohtaro Takei
Elucidating the local function of proteins is essential for understanding not only the individual proteins but also the organization of the cell or even tissue as a whole. However, until now, few attempts have been made to understand local proteins function in cells because of a lack of acute inactivation technique of local proteins with high versatility. Here we describe the application of the chromophore-assisted light inactivation (CALI) method to elucidate the role of the semaphorin signaling component CRMP located within the growth cone area in axon growth and growth cone turning...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27759576/paraneoplastic-optic-neuropathy-associated-with-purkinje-cell-antibody-2-in-a-patient-with-small-cell-lung-cancer
#3
Jonathan A Micieli, Edward A Margolin
Paraneoplastic optic neuropathy (PON) is a rare cause of vision loss usually associated with small cell lung cancer. Patients with this condition usually test positive for anti-collapsin response mediating protein-5 (CRMP-5). We describe a case of a 57-year-old woman with bilateral vision loss with the characteristic features of CRMP-5 PON including bilateral optic disc edema and vitreous cells. However, she was negative for anti-CRMP-5 including a negative Western blot on two occasions, but positive for Purkinje Cell Antibody (PCA)-2...
October 17, 2016: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/27754100/os-21-05-pivotal-role-of-heme-oxygenase-in-amelioration-by-nicotinamide-of-fetal-growth-restriction-associated-with-preeclampsia
#4
Hironobu Nakada, Tomofumi Fushima, Akiyo Sekimoto, Yuji Oe, Emiko Sato, Sadayoshi Ito, Hiroshi Sato, Nobuyuki Takahashi
OBJECTIVE: Preeclampsia (PE) is pregnancy-induced hypertension with proteinuria. It causes maternal death or fetal growth restriction (FGR). Although high BP can be managed with antihypertensive drugs, there is no effective treatment of FGR associated with PE. We have clarified that nicotinamide (Nam) alleviates PE-like condition and FGR induced by soluble fms-like tyrosine kinase-1 (sFlt-1) in mice. But the mechanism of how Nam works is unclear. Because Nam induces cytoprotective heme oxygenase 1 (HO-1), our aim is to clarify whether HO-1 contributes to therapeutic effect of Nam against FGR associated with PE...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27744701/evaluation-of-an-isotope-dilution-hplc-tandem-mass-spectrometry-candidate-reference-measurement-procedure-for-total-17-%C3%AE-estradiol-in-human-serum
#5
Julianne Cook Botelho, Ashley Ribera, Hans C Cooper, Hubert W Vesper
The inaccuracy of 17- βestradiol (E2) measurements affects its use as a biomarker in patient care and research. Clinical and research communities called for accurate and standardized E2 measurements. Reference Measurement Procedures (RMPs), part of the CDC Hormone Standardization Program (HoSt), are essential in addressing this need and ensuring that methods are accurate and comparable across testing systems, laboratories, and over time. A candidate RMP (cRMP) was developed for the measurement of total E2 in serum using liquid chromatography tandem mass spectrometry (LC-MS/MS) without derivatization...
October 16, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27698685/targeting-crmp-4-by-lentivirus-mediated-rna-interference-inhibits-sw480-cell-proliferation-and-colorectal-cancer-growth
#6
Si-Le Chen, Shi-Rong Cai, Xin-Hua Zhang, Wen-Feng Li, Er-Tao Zhai, Jian-Jun Peng, Hui Wu, Chuang-Qi Chen, Jin-Ping Ma, Zhao Wang, Yu-Long He
The aim of the present study was to investigate the expression level of collapsin response mediator protein 4 (CRMP-4) in human colorectal cancer (CRC) tissue and to evauluate its impact on SW480 cell proliferation, in addition to tumor growth in a mouse xenograft model. Clinical CRC tissue samples were collected to detect the CRMP-4 protein expression levels using western blot and immunohistochemistry analyses. A specific small interfering RNA sequence targeting the CRMP-4 gene (DPYSL3) was constructed and transfected into an SW480 cell line using a lentivirus vector to obtain a stable cell line with low expression of CRMP-4...
October 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27643025/os-21-05-pivotal-role-of-heme-oxygenase-in-amelioration-by-nicotinamide-of-fetal-growth-restriction-associated-with-preeclampsia
#7
Hironobu Nakada, Tomofumi Fushima, Akiyo Sekimoto, Yuji Oe, Emiko Sato, Sadayoshi Ito, Hiroshi Sato, Nobuyuki Takahashi
OBJECTIVE: Preeclampsia (PE) is pregnancy-induced hypertension with proteinuria. It causes maternal death or fetal growth restriction (FGR). Although high BP can be managed with antihypertensive drugs, there is no effective treatment of FGR associated with PE. We have clarified that nicotinamide (Nam) alleviates PE-like condition and FGR induced by soluble fms-like tyrosine kinase-1 (sFlt-1) in mice. But the mechanism of how Nam works is unclear. Because Nam induces cytoprotective heme oxygenase 1 (HO-1), our aim is to clarify whether HO-1 contributes to therapeutic effect of Nam against FGR associated with PE...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27571910/double-trouble-para-neoplastic-anti-pca-2-and-crmp-5-mediated-small-fibre-neuropathy-followed-by-chorea-associated-with-small-cell-lung-cancer-and-evolving-radiological-features
#8
Waqar Waheed, James Boyd, Farrah Khan, Sharon L Mount, Neil M Borden, Rup Tandan
Patients with Purkinje cell cytoplasmic autoantibody type 2 (PCA-2) and collapsin response-mediator protein-5 (CRMP-5) autoantibody can present with multifocal elements of encephalomyeloneuropathy. Except for an anecdotal report, case descriptions of paraneoplastic small fibre neuropathy are lacking. We report paraneoplastic small fibre neuropathy followed by chorea associated with small cell lung cancer. A man aged 57 years with a 35 pack-year smoking history presented with painless subacute paresthesia and weight fluctuation...
August 29, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27440512/serum-cortisol-an-up-to-date-assessment-of-routine-assay-performance
#9
James M Hawley, Laura J Owen, Stephen J Lockhart, Phillip J Monaghan, Annie Armston, Carrie A Chadwick, Heather Wilshaw, Maisa Freire, Leslie Perry, Brian G Keevil
BACKGROUND: Accurate serum cortisol quantification is required for the correct diagnosis and management of adrenal pathologies. Presently, most laboratories use immunoassay to measure serum cortisol with proficiency schemes demonstrating a wide dispersion of results. Here, we investigate the effects of sex, matrix, and antibody specificity on serum cortisol quantification in 6 routine assays. METHODS: Surplus serum was obtained before disposal and the following cohorts were created: males, nonpregnant females, pregnant patients, and patients prescribed either metyrapone or prednisolone...
September 2016: Clinical Chemistry
https://www.readbyqxmd.com/read/27339813/crmp4-regulates-dendritic-growth-and-maturation-via-the-interaction-with-actin-cytoskeleton-in-cultured-hippocampal-neurons
#10
Caihui Cha, Jifeng Zhang, Zhisheng Ji, Minghui Tan, Sumei Li, Fengming Wu, Keen Chen, Sitang Gong, Guoqing Guo, Hongsheng Lin
CRMP family proteins (CRMPs) are critical for neurite outgrowth and maturation in the developing nervous system. However, the distinct roles of CRMP isoforms remain to be elucidated, especially in dendritic development. Here, we show that CRMP4 is sufficient and necessary for dendritic growth and maturation in cultured hippocampal neurons. Overexpression of CRMP4 promotes and genetic knockdown of CRMP4 inhibits the amount of dendritic tips, total dendritic length, spine density, and the frequency but not amplitude of miniature excitatory synaptic current...
June 2016: Brain Research Bulletin
https://www.readbyqxmd.com/read/27221205/standardisation-and-use-of-the-alcohol-biomarker-carbohydrate-deficient-transferrin-cdt
#11
Anders Helander, Jos Wielders, Raymond Anton, Torsten Arndt, Vincenza Bianchi, Jean Deenmamode, Jan-Olof Jeppsson, John B Whitfield, Cas Weykamp, François Schellenberg
Carbohydrate-deficient transferrin (CDT) is a glycoform profile of serum transferrin that increases in response to sustained high alcohol intake and over the last decades has become an important alcohol biomarker with clinical and forensic applications. However, the wide range of CDT measurement procedures has resulted in lack of uniform results and reference limits, and hampered comparison of results. In 2005, the IFCC therefore founded a special working group (WG) aiming for standardisation of CDT measurement...
August 1, 2016: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/27122395/snp-miniplexes-for-individual-identification-of-random-bred-domestic-cats
#12
Ashley Brooks, Erica K Creighton, Barbara Gandolfi, Razib Khan, Robert A Grahn, Leslie A Lyons
Phenotypic and genotypic characteristics of the cat can be obtained from single nucleotide polymorphisms (SNPs) analyses of fur. This study developed miniplexes using SNPs with high discriminating power for random-bred domestic cats, focusing on individual and phenotypic identification. Seventy-eight SNPs were investigated using a multiplex PCR followed by a fluorescently labeled single base extension (SBE) technique (SNaPshot(®) ). The SNP miniplexes were evaluated for reliability, reproducibility, sensitivity, species specificity, detection limitations, and assignment accuracy...
May 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27015090/regulation-of-gap-junction-dynamics-by-unc-44-ankyrin-and-unc-33-crmp-through-vab-8-in-c-elegans-neurons
#13
Lingfeng Meng, Chia-hui Chen, Dong Yan
Gap junctions are present in both vertebrates and invertebrates from nematodes to mammals. Although the importance of gap junctions has been documented in many biological processes, the molecular mechanisms underlying gap junction dynamics remain unclear. Here, using the C. elegans PLM neurons as a model, we show that UNC-44/ankyrin acts upstream of UNC-33/CRMP in regulation of a potential kinesin VAB-8 to control gap junction dynamics, and loss-of-function in the UNC-44/UNC-33/VAB-8 pathway suppresses the turnover of gap junction channels...
March 2016: PLoS Genetics
https://www.readbyqxmd.com/read/26952865/mtorc1-dependent-translation-of-collapsin-response-mediator-protein-2-drives-neuroadaptations-underlying-excessive-alcohol-drinking-behaviors
#14
F Liu, S Laguesse, R Legastelois, N Morisot, S Ben Hamida, D Ron
Mammalian target of rapamycin complex 1 (mTORC1) has an essential role in dendritic mRNA translation and participates in mechanisms underlying alcohol-drinking and reconsolidation of alcohol-related memories. Here, we report that excessive alcohol consumption increases the translation of downstream targets of mTORC1, including collapsin response mediator protein-2 (CRMP-2), in the nucleus accumbens (NAc) of rodents. We show that alcohol-mediated induction of CRMP-2 translation is mTORC1-dependent, leading to increased CRMP-2 protein levels...
March 8, 2016: Molecular Psychiatry
https://www.readbyqxmd.com/read/26830482/proteomic-profiling-in-the-spinal-cord-and-sciatic-nerve-in-a-global-cerebral-ischemia-induced-mechanical-allodynia-mouse-model
#15
Shinichi Harada, Wataru Matsuura, Masaoki Takano, Shogo Tokuyama
Central post-stroke pain (CPSP) is one of the complications of cerebral ischemia and neuropathic pain syndrome. At present, there are few studies of pain in regions such as the spinal cord or sciatic nerve in cerebral ischemic animal models. To identify proteomic changes in the spinal cord and sciatic nerve in global cerebral ischemic model mice, in the present study we performed an investigation using proteomic methods. In a comparison between the intensity of protein spots obtained from a sham and that from a bilateral carotid artery occulusion (BCAO) in spinal cord and sciatic nerve, the levels of 10 (spinal cord) and 7 (sciatic nerve) protein spots were altered...
2016: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/26821224/early-ankle-mobilization-promotes-healing-in-a-rabbit-model-of-achilles-tendon-rupture
#16
Jiasharete Jielile, Batiza Asilehan, Aikeremu Wupuer, Bayixiati Qianman, Ayidaer Jialihasi, Wulanbai Tangkejie, Abudouheilil Maimaitiaili, Nuerai Shawutali, Aynaz Badelhan, Hadelebieke Niyazebieke, Adili Aizezi, Amuding Aisaiding, Yerzat Bakyt, Rakimbaiev Aibek, Jianati Wuerliebieke
The use of early mobilization of the ankle joint without orthosis in the treatment of Achilles tendon rupture has been advocated as the optimal management. The goal of this study was to compare outcomes in a postoperative rabbit model of Achilles tendon rupture between early mobilization and immobilized animals using a differential proteomics approach. In total, 135 rabbits were randomized into the control group (n=15), the postoperative cast immobilization (PCI) group (n=60), and the early mobilization (EM) group (n=60)...
January 2016: Orthopedics
https://www.readbyqxmd.com/read/26804001/anti-glycan-antibodies-halt-axon-regeneration-in-a-model-of-guillain-barr%C3%A3-syndrome-axonal-neuropathy-by-inducing-microtubule-disorganization-via-rhoa-rock-dependent-inactivation-of-crmp-2
#17
Victoria Rozés Salvador, Florencia Heredia, Andrés Berardo, Anabela Palandri, Jose Wojnacki, Ana L Vivinetto, Kazim A Sheikh, Alfredo Caceres, Pablo H H Lopez
Several reports have linked the presence of high titers of anti-Gg Abs with delayed recovery/poor prognosis in GBS. In most cases, failure to recover is associated with halted/deficient axon regeneration. Previous work identified that monoclonal and patient-derived anti-Gg Abs can act as inhibitory factors in an animal model of axon regeneration. Further studies using primary dorsal root ganglion neuron (DRGn) cultures demonstrated that anti-Gg Abs can inhibit neurite outgrowth by targeting gangliosides via activation of the small GTPase RhoA and its associated kinase (ROCK), a signaling pathway common to other established inhibitors of axon regeneration...
April 2016: Experimental Neurology
https://www.readbyqxmd.com/read/26789651/changes-of-synapses-in-experimental-autoimmune-encephalomyelitis-by-using-fasudil
#18
Jie-Zhong Yu, Chan Chen, Qiong Zhang, Yong-Fei Zhao, Ling Feng, Hai-Fei Zhang, Jian Meng, Cun-Gen Ma, Bao-Guo Xiao
The ROCK signaling pathway is involved in numerous fundamental cellular functions such as cell migration, apoptosis, inflammatory responses, and neurite outgrowth. Previous studies demonstrate that Fasudil exhibited therapeutic potential of experimental autoimmune encephalomyelitis (EAE) possibly through immune-modulation and anti-inflammation. In this study, we observed the effect of Fasudil on synaptic protection of EAE mice. Fasudil ameliorated the clinical severity of EAE and inhibited Rho kinase (ROCK), especially ROCK II, in brain and spinal cord of EAE mice...
March 2016: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/26768433/chronic-refractory-myofascial-pain-and-denervation-supersensitivity-as-global-public-health-disease
#19
J Chu, F Bruyninckx, D V Neuhauser
Chronic pain with a 30.3% global prevalence significantly impacts universal health. Low back pain has a 9.4% prevalence worldwide causing the most widespread disability. Neck pain ranks 4th highest regarding years lived with disability with a 4.9% prevalence worldwide. The principal cause of pain in 85% of patients visiting a tertiary pain clinic has a myofascial origin. The root cause is multifocal neuromuscular ischaemia at myofascial trigger points from muscle tightening and shortening following spondylotic radiculopathy induced partial denervation...
2016: BMJ Case Reports
https://www.readbyqxmd.com/read/26739921/deletion-of-collapsin-response-mediator-protein-4-results-in-abnormal-layer-thickness-and-elongation-of-mitral-cell-apical-dendrites-in-the-neonatal-olfactory-bulb
#20
Atsuhiro Tsutiya, Hikaru Watanabe, Yui Nakano, Masugi Nishihara, Yoshio Goshima, Ritsuko Ohtani-Kaneko
Collapsin response mediator protein 4 (CRMP4), a member of the CRMP family, is involved in the pathogenesis of neurodevelopmental disorders such as schizophrenia and autism. Here, we first compared layer thickness of the olfactory bulb between wild-type (WT) and CRMP4-knockout (KO) mice. The mitral cell layer (MCL) was significantly thinner, whereas the external plexiform layer (EPL) was significantly thicker in CRMP4-KO mice at postnatal day 0 (PD0) compared with WTs. However, differences in layer thickness disappeared by PD14...
May 2016: Journal of Anatomy
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