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https://www.readbyqxmd.com/read/28428632/cyclophosphamide-induced-hcn1-channel-upregulation-in-interstitial-cajal-like-cells-leads-to-bladder-hyperactivity-in-mice
#1
Qian Liu, Zhou Long, Xingyou Dong, Teng Zhang, Jiang Zhao, Bishao Sun, Jingzhen Zhu, Jia Li, Qingqing Wang, Zhenxing Yang, Xiaoyan Hu, Longkun Li
Hyperpolarization-activated cyclic nucleotide-gated (HCN) channels are confirmed to be expressed in bladder interstitial Cajal-like cells (ICC-LCs), but little is known about their possible role in cystitis-associated bladder dysfunction. The present study aimed to determine the functional role of HCN channels in regulating bladder function under inflammatory conditions. Sixty female wild-type C57BL/6J mice and sixty female HCN1-knockout mice were randomly assigned to experimental and control groups, respectively...
April 21, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28426719/transcriptome-of-interstitial-cells-of-cajal-reveals-unique-and-selective-gene-signatures
#2
Moon Young Lee, Se Eun Ha, Chanjae Park, Paul J Park, Robert Fuchs, Lai Wei, Brian G Jorgensen, Doug Redelman, Sean M Ward, Kenton M Sanders, Seungil Ro
Transcriptome-scale data can reveal essential clues into understanding the underlying molecular mechanisms behind specific cellular functions and biological processes. Transcriptomics is a continually growing field of research utilized in biomarker discovery. The transcriptomic profile of interstitial cells of Cajal (ICC), which serve as slow-wave electrical pacemakers for gastrointestinal (GI) smooth muscle, has yet to be uncovered. Using copGFP-labeled ICC mice and flow cytometry, we isolated ICC populations from the murine small intestine and colon and obtained their transcriptomes...
2017: PloS One
https://www.readbyqxmd.com/read/28425078/involvement-of-interstitial-cells-of-cajal-in-bladder-dysfunction-in-mice-with-experimental-autoimmune-encephalomyelitis
#3
Zhibo Jin, Yinghui Ding, Rui Xue, Zhankui Jia, Zhenlin Huang, Yafei Ding, Chaohui Gu, Jinjian Yang
BACKGROUND: Bladder dysfunction is an important symptom of experimental autoimmune encephalomyelitis (EAE). Our previous study showed that EAE-induced upregulation of the E-prostanoid receptor 3 (EP3) and E-prostanoid receptor 4 (EP4) in the bladder was accompanied by bladder dysfunction. Although many other studies have evaluated the lower urinary tract symptoms in multiple sclerosis, the mechanism remains unclear. OBJECTIVES: To investigate the effects of interstitial cells of Cajal (ICC) on bladder dysfunction in a novel neurogenic bladder model induced by experimental autoimmune encephalomyelitis...
April 19, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28418356/-pathomorphology-of-the-ventricular-germinal-zone-and-neocortex-in-newborn-infants-with-posthemorrhagic-hydrocephalus
#4
E V Protsenko, L P Peretyatko, O P Saryeva
AIM: Тo study the morphological features of the ventricular germinal zone and neocortex in newborns at 22-40 weeks' gestation with posthemorrhagic hydrocephalus. MATERIAL AND METHODS: The brains of fetuses and newborns at 22-40 weeks' gestation with posthemorrhagic hydrocephalus (n=12) were examined; a control group included the brains with a lateral ventricle lumen width of not more than 0.5 cm (n=30). The investigators conducted a comprehensive pathomorphological study of the ventricular germinal zone and neocortex in the projection field No...
2017: Arkhiv Patologii
https://www.readbyqxmd.com/read/28416454/e1a-is-an-exogenous-in-vivo-tumour-suppressor
#5
F J Cimas, J L Callejas-Valera, D C García-Olmo, J Hernández-Losa, P Melgar-Rojas, M J Ruiz-Hidalgo, R Pascual-Serra, M Ortega-Muelas, O Roche, P Marcos, E Garcia-Gil, D M Fernandez-Aroca, S Ramón Y Cajal, J S Gutkind, R Sanchez-Prieto
The E1a gene from adenovirus has become a major tool in cancer research. Since the discovery of E1a, it has been proposed to be an oncogene, becoming a key element in the model of cooperation between oncogenes. However, E1a's in vivo behaviour is consistent with a tumour suppressor gene, due to the block/delay observed in different xenograft models. To clarify this interesting controversy, we have evaluated the effect of the E1a 13s isoform from adenovirus 5 in vivo. Initially, a conventional xenograft approach was performed using previously unreported HCT116 and B16-F10 cells, showing a clear anti-tumour effect regardless of the mouse's immunological background (immunosuppressed/immunocompetent)...
April 14, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28413456/role-of-stem-cell-growth-factor-c-kit-in-the-pathogenesis-of-irritable-bowel-syndrome
#6
Yuna Chai, Yusheng Huang, Hongmei Tang, Xing Tu, Jianbo He, Ting Wang, Qingye Zhang, Fen Xiong, Detang Li, Zhenwen Qiu
Irritable bowel syndrome (IBS) is a functional bowel disease with a complicated etiopathogenesis, often characterized by gastrointestinal motility disorder and high visceral sensitivity. IBS is a comprehensive multi-systemic disorder, with the interaction of multiple factors, such as mental stress, intestinal function and flora, heredity, resulting in the disease. The existence of a common mechanism underlying the aforementioned factors is currently unknown. The lack of therapies that comprehensively address the disease symptoms, including abdominal pain and diarrhea, is a limitation of current IBS management...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28408981/rna-and-proteins-mutual-respect
#7
REVIEW
Kathleen B Hall
Proteins and RNA are often found in ribonucleoprotein particles (RNPs), where they function in cellular processes to synthesize proteins (the ribosome), chemically modify RNAs (small nucleolar RNPs), splice pre-mRNAs (the spliceosome), and, on a larger scale, sequester RNAs, degrade them, or process them (P bodies, Cajal bodies, and nucleoli). Each RNA-protein interaction is a story in itself, as both molecules can change conformation, compete for binding sites, and regulate cellular functions. Recent studies of Xist long non-coding RNP, the U4/5/6 tri-small nuclear RNP complex, and an activated state of a spliceosome reveal new features of RNA interactions with proteins, and, although their stories are incomplete, they are already fascinating...
2017: F1000Research
https://www.readbyqxmd.com/read/28406480/wdr79-promotes-the-proliferation-of-non-small-cell-lung-cancer-cells-via-usp7-mediated-regulation-of-the-mdm2-p53-pathway
#8
Yang Sun, Lanqin Cao, Xunan Sheng, Jieying Chen, Yu Zhou, Chao Yang, Tanggang Deng, Hongchang Ma, Peifu Feng, Jing Liu, Weihong Tan, Mao Ye
WD repeat protein 79 (WDR79) is a member of the WD-repeat protein family and functions as a scaffold protein during telomerase assembly, Cajal body formation and DNA double strand break repair. We have previously shown that WDR79 is frequently overexpressed in cell lines and tissues derived from non-small cell lung cancer (NSCLC) and it accelerates cell proliferation in NSCLC. However, the detailed mechanism underlying the role of WDR79 in the proliferation of NSCLC cells remains unclear. Here, we report the discovery of a molecular interaction between WDR79 and USP7 and show its functional significance in linking the Mdm2-p53 pathway to the proliferation of NSCLC cells...
April 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28398641/time-lapse-imaging-and-cell-tracking-of-migrating-cells-in-slices-and-flattened-telencephalic-vesicles
#9
Verónica Murcia-Belmonte, Giovanna Expósito, Eloísa Herrera
Neuronal migration is a vital process needed for subsequent assembly and function of neural circuitry during embryonic development. The vast majority of neural progenitors are generated far from their final destination and need to migrate considerable distances to reach their specific cortical layer. Innovations in cell culture techniques and fluorescence microscopy now facilitate the direct visualization of cell movements during cortical development. Here, a detailed protocol to record and analyze a particular type of early migrating neurons, the Cajal Retzius Cells, during the development of the telencephalic vesicles in mammals is described...
April 10, 2017: Current Protocols in Neuroscience
https://www.readbyqxmd.com/read/28384644/current-standard-and-future-perspectives-in-the-treatment-of-gastrointestinal-stromal-tumors
#10
Silke Cameron, Alexander Beham, Hans-Ulrich Schildhaus
The origin of gastrointestinal stromal tumors (GIST) from interstitial cells of Cajal or their precursor cells has been understood since the early 1990s. The first mutations within the KIT-gene have been described in the late 1990s. Even though these mutations were the breakthrough of small molecular therapy, we still do not know the factors responsible for their malignant transformation. Until then, we can only speak of recurrence risk. This review gives an introduction on the current understanding of GIST and highlights the remaining questions for diagnosis, tumor progression, and treatment in progressive disease...
April 7, 2017: Digestion
https://www.readbyqxmd.com/read/28381992/corrigendum-p%C3%A3-o-del-r%C3%A3-o-hortega-a-visionary-in-the-pathology-of-central-nervous-system-tumors
#11
Santiago Ramon Y Cajal Agüeras
[This corrects the article on p. 13 in vol. 10, PMID: 26973470.].
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/28374487/gastric-neuromuscular-histology-in-patients-with-refractory-gastroparesis-relationships-to-etiology-gastric-emptying-and-response-to-gastric-electric-stimulation
#12
J Heckert, R M Thomas, H P Parkman
BACKGROUND: The aims of this study were to describe the histology in gastroparesis, specifically to relate histopathology to etiology of gastroparesis (idiopathic and diabetic gastroparesis), gastric emptying, and clinical response to gastric electric stimulation. METHODS: Full thickness gastric body sections obtained during insertion of gastric stimulator in gastroparetics were stained with Hematoxylin & Eosin, Masson Trichrome and immunohistochemical stains for Neuron-Specific Enolase and c-Kit...
April 4, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28359405/distribution-and-number-of-cajal-like-cells-in-testis-tissue-with-azoospermia
#13
Eray Hasirci, Tahsin Turunc, Nebil Bal, Mehmet Resit Goren, Huseyin Celik, Enis Kervancioglu, Ayhan Dirim, Mustafa Agah Tekindal, Hakan Ozkardes
We investigated the number and distribution of Cajal-like cells in patients with azoospermia. A total of 99 patients with non-obstructive azoospermia were divided into subgroups [19 patientsin hypospermatogenesis group (S1), 40 patients in maturation arrest group (S2), 20 patients in a Sertoli cell-only syndrome (S3), and 20 patients in a testicular atrophy and fibrosis group (S4)], and 20 patients with obstructive azoospermia group (S0). Sections stained with a c-kit antibody were studied by light microscopy to determine the number and distribution of Cajal-like cells in peritubular and perivascular areas of testis...
April 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/28347715/preeclampsia-novel-insights-from-global-rna-profiling-of%C3%A2-trophoblast-subpopulations
#14
Matthew Gormley, Katherine Ona, Miko Kapidzic, Tamara Garrido-Gomez, Tamara Zdravkovic, Susan J Fisher
BACKGROUND: The maternal signs of preeclampsia, which include the new onset of high blood pressure, can occur because of faulty placentation. We theorized that transcriptomic analyses of trophoblast subpopulations in situ would lend new insights into the role of these cells in preeclampsia pathogenesis. OBJECTIVE: Our goal was to enrich syncytiotrophoblasts, invasive cytotrophoblasts, or endovascular cytotrophoblasts from the placentas of severe preeclampsia cases...
March 24, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28337219/neural-differentiation-in-hdac1-depleted-cells-is-accompanied-by-coilin-downregulation-and-the-accumulation-of-cajal-bodies-in-nucleoli
#15
Jana Krejčí, Soňa Legartová, Eva Bártová
Cajal bodies (CBs) are important compartments containing accumulated proteins that preferentially regulate RNA-related nuclear events, including splicing. Here, we studied the nuclear distribution pattern of CBs in neurogenesis. In adult brains, coilin was present at a high density, but CB formation was absent in the nuclei of the choroid plexus of the lateral ventricles. Cells of the adult hippocampus were characterized by a crescent-like morphology of coilin protein. We additionally observed a 70 kDa splice variant of coilin in adult mouse brains, which was different to embryonic brains and mouse pluripotent embryonic stem cells (mESCs), characterized by the 80 kDa standard variant of coilin...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28336549/eavk-segment-c-sequence-confers-ca-2-dependent-changes-to-the-kinetics-of-full-length-human-ano1
#16
Peter R Strege, Simon J Gibbons, Amelia Mazzone, Cheryl E Bernard, Arthur Beyder, Gianrico Farrugia
Anoctamin1 (Ano1, TMEM16A) is a calcium-activated chloride channel specifically expressed in interstitial cells of Cajal (ICC) of the gastrointestinal (GI) tract muscularis propria. Ano1 is necessary for normal electrical slow waves and ICC proliferation. The full length human Ano1 sequence includes an additional exon, exon "0," at the N-terminus. Ano1 with exon "0" (Ano1(0)) had a lower EC50 for intracellular calcium ([Ca(2+)]i) and faster chloride current (ICl) kinetics. The Ano1 alternative splice variant with segment "c" encoding exon 13 expresses on the first intracellular loop four additional amino acid residues, EAVK, which alter ICl at low [Ca(2+)]i Exon 13 is expressed in 75-100% of Ano1 transcripts in most human tissues but only 25% in human stomach...
March 23, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28324503/visualization-of-human-telomerase-localization-by-fluorescence-microscopy-techniques
#17
Eladio Abreu, Rebecca M Terns, Michael P Terns
Human telomerase is a ribonucleoprotein (RNP) that synthesizes DNA repeats at the ends of chromosomes and maintains telomere length and genome stability. The enzyme is comprised of telomerase RNA (hTR) (which provides the template for telomere addition) and several protein subunits including telomerase reverse transcriptase (hTERT) (the catalytic component). Intracellular trafficking of the enzyme has emerged as an important factor in the regulation of telomerase activity. Telomerase trafficking between nuclear Cajal bodies (proposed sites of telomerase biogenesis and regulation) and telomeres (sites of action) is regulated by the cell cycle in concordance with telomere synthesis during S phase...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28324028/a-duodenal-sdh-deficient-gastrointestinal-stromal-tumor-in-a-patient-with-a-germline-sdhb-mutation
#18
M S Elston, S Sehgal, M Dray, E Phillips, J V Conaglen, R J Clifton-Bligh, A J Gill
Context: Gastrointestinal Stromal Tumors (GISTs) are mesenchymal tumors of the gastrointestinal tract arising from the interstitial cells of Cajal. Succinate dehydrogenase (SDH) deficient GISTs are a unique class of GIST defined by: loss of immunohistochemical expression of SDHB indicating dysfunction of the mitochondrial complex 2, lack of driver mutations in KIT and PDGFRA, and a distinctive morphology and natural history. To date, all reported SDH-deficient GISTs have arisen in the stomach...
March 15, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28318729/acute-cerebellitis-in-paediatric-patients-our-experience
#19
J P García-Iñiguez, F J López-Pisón, P Madurga Revilla, I Montejo Gañán, M Domínguez Cajal, L Monge Galindo, S B Sánchez Marco, M C García Jiménez
INTRODUCTION: Acute cerebellitis is a rare inflammatory disease with a highly variable clinical course that ranges from benign self-limiting symptoms to a fulminant presentation associated with a high risk of death due to compression of the posterior fossa, acute hydrocephalus, and intracranial hypertension. METHODS: We reviewed clinical, laboratory, and radiological findings from children diagnosed with acute cerebellitis between May 2007 and November 2016. We analysed treatments and clinical and radiological progression...
March 15, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28317837/inhibitory-responses-mediated-by-vagal-nerve-stimulation-are-diminished-in-stomachs-of-mice-with-reduced-intramuscular-interstitial-cells-of-cajal
#20
Elizabeth A H Beckett, Kenton M Sanders, Sean M Ward
Intramuscular interstitial cells of Cajal (ICC-IM) are closely associated with enteric motor nerve terminals and electrically coupled to smooth muscle cells within the gastric musculature. Previous studies investigating the role of ICC-IM in motor neurotransmission have used indiscriminate electric field stimulation of neural elements within the gastric wall. To determine the role of ICC-IM in transduction of vagally-mediated motor input to gastric muscles electrical and mechanical responses to selective electrical vagal stimulation (EVS) were recorded from gastric fundus and antral regions of wild type and W/W(V) mice, which lack most ICC-IM...
March 20, 2017: Scientific Reports
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