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https://www.readbyqxmd.com/read/27909623/distribution-of-interstitial-cells-of-cajal-in-the-bladders-of-fetal-rats-with-retinoic-acid-induced-myelomeningocele
#1
Ali Tekin, Osman Zeki Karakuş, Gülce Hakgüder, Oğuz Ateş, Erdener Özer, Mustafa Olguner, Feza Miraç Akgür
OBJECTIVE: Myelomeningocele (MMC) is one of the most common reason of neurogenic bladder dysfunction in children. Although neurogenic bladder dysfunction occurrence is related with bladder innervation, also there are some changes seen in the smooth muscle and neural cells of the bladder. Interstitial cells of Cajal (ICC) are the pacemaker cells found in organs with peristaltic activity. Although it has been shown that ICC are diminished in the rat urinary bladder with traumatic spinal cord injury, there is no data about ICC in fetal rat bladders with MMC...
December 2016: Turkish Journal of Urology
https://www.readbyqxmd.com/read/27899160/physiopathology-of-vesico-ureteral-reflux
#2
REVIEW
Salvatore Arena, Roberta Iacona, Pietro Impellizzeri, Tiziana Russo, Lucia Marseglia, Eloisa Gitto, Carmelo Romeo
Vescico-Ureteral Reflux (VUR) is a common condition in childhood, caused by a congenital anomaly at the Vescico-Ureteral Junction (VUJ) level. It seems that the main cause could be an abnormal embryological development occurred during the early stage of fetal life.Refluxing ureteral endings show structural and functional anomalies: previous studies have shown a significant decrease in alfa actin, miosin and desmin contents as well as an high rate of atrophy and muscular degeneration with disorganized muscular fibres...
November 29, 2016: Italian Journal of Pediatrics
https://www.readbyqxmd.com/read/27875260/the-presence-and-role-of-interstitial-cells-of-cajal-in-the-proximal-intestine-of-shorthorn-sculpin-myoxocephalus-scorpius
#3
Jeroen Brijs, Grant W Hennig, Anna-Maria Kellermann, Michael Axelsson, Catharina Olsson
Rhythmic contractions of the mammalian gastrointestinal tract can occur in the absence of neuronal or hormonal stimulation due to the generation of spontaneous electrical activity by interstitial cells of Cajal (ICC) that are electrically coupled to smooth muscle cells. The myogenically-driven component of gastrointestinal motility patterns in fish likely also involves ICC, however, little is known of their presence, distribution and function in any fish species. In the present study, we combined immunohistochemistry and in vivo recordings of intestinal motility to investigate the involvement of ICC in the motility of the proximal intestine in adult shorthorn sculpin (Myoxocephalus scorpius)...
November 10, 2016: Journal of Experimental Biology
https://www.readbyqxmd.com/read/27874249/role-of-neural-integrators-in-oculomotor-systems-a%C3%A2-systematic-narrative-literature-review
#4
REVIEW
Katherine Sanchez, Fiona J Rowe
PURPOSE: To evaluate the role of neural integrators (NI) in the oculomotor system. METHODS: A literature search was carried out using several electronic databases during the months of June 2014 to March 2015. The following keywords were used to generate focused results: 'neural integrators', 'gaze-holding', 'oculomotor integration', 'impaired gaze-holding', 'gaze evoked nystagmus' and 'gaze dysfunction'. Further materials were found through searching relevant articles within reference lists...
November 22, 2016: Acta Ophthalmologica
https://www.readbyqxmd.com/read/27869805/engineered-human-pluripotent-stem-cell-derived-intestinal-tissues-with-a-functional-enteric-nervous-system
#5
Michael J Workman, Maxime M Mahe, Stephen Trisno, Holly M Poling, Carey L Watson, Nambirajan Sundaram, Ching-Fang Chang, Jacqueline Schiesser, Philippe Aubert, Edouard G Stanley, Andrew G Elefanty, Yuichiro Miyaoka, Mohammad A Mandegar, Bruce R Conklin, Michel Neunlist, Samantha A Brugmann, Michael A Helmrath, James M Wells
The enteric nervous system (ENS) of the gastrointestinal tract controls many diverse functions, including motility and epithelial permeability. Perturbations in ENS development or function are common, yet there is no human model for studying ENS-intestinal biology and disease. We used a tissue-engineering approach with embryonic and induced pluripotent stem cells (PSCs) to generate human intestinal tissue containing a functional ENS. We recapitulated normal intestinal ENS development by combining human-PSC-derived neural crest cells (NCCs) and developing human intestinal organoids (HIOs)...
November 21, 2016: Nature Medicine
https://www.readbyqxmd.com/read/27860408/ionized-calcium-binding-adaptor-molecule-1-positive-macrophages-and-ho-1-up-regulation-in-intestinal-muscularis-resident-macrophages
#6
Hanne B Mikkelsen, Jan D Huizinga, Jytte O Larsen, Svend Kirkeby
: Small intestinal muscularis externa macrophages have been associated with interstitial cells of Cajal (ICC). They have been proposed to play various roles in motility disorders and to take part in a microbiota-driven regulation of gastrointestinal motility. Our objective was to understand the reaction of resident macrophages of the musculature to a pro-inflammatory stimulator, lipopolysaccharide (LPS). Mice were injected with LPS or saline and sacrificed after 6 hours. Whole mounts were stained with antibodies toward CD169, ionized calcium-binding adaptor molecule 1 (iba1) (microglial/macrophage marker) and heme oxygenase-1 (HO-1)...
November 16, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/27859481/coils-spring-into-action-cajal-bodies-and-the-genomic-organization-of-transcription-comment-doi-10-1002-bies-201600144
#7
Danielle Fanslow, Steven T Kosak
No abstract text is available yet for this article.
November 17, 2016: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/27858508/activation-of-transcription-enforces-the-formation-of-distinct-nuclear-bodies-in-zebrafish-embryos
#8
Patricia Heyn, Hanna Salmonowicz, Jonathan Rodenfels, Karla M Neugebauer
Nuclear bodies are cellular compartments that lack lipid bilayers and harbor specific RNAs and proteins. Recent proposals that nuclear bodies form through liquid-liquid phase separation leave the question of how different nuclear bodies maintain their distinct identities unanswered. Here we investigate Cajal bodies (CBs), histone locus bodies (HLBs) and nucleoli - involved in assembly of the splicing machinery, histone mRNA 3' end processing, and rRNA processing, respectively - in the embryos of the zebrafish, Danio rerio...
November 18, 2016: RNA Biology
https://www.readbyqxmd.com/read/27857188/low-voltage-scanning-electron-microscopy-study-of-lampbrush-chromosomes-and-nuclear-bodies-in-avian-and-amphibian-oocytes
#9
Tatiana Kulikova, Tatiana Khodyuchenko, Yuri Petrov, Alla Krasikova
Nucleus is a highly compartmentalized part of the cell where the key processes of genome functionality are realized through the formation of non-membranous nuclear domains. Physically nuclear domains appear as liquid droplets with different viscosity stably maintained throughout the interphase or during the long diplotene stage of meiosis. Since nuclear body surface represents boundary between two liquid phases, the ultrastructural surface topography of nuclear domains is of an outstanding interest. The aim of this study was to examine ultrathin surface topography of the amphibian and avian oocyte nuclear structures such as lampbrush chromosomes, nucleoli, histone-locus bodies, Cajal body-like bodies, and the interchromatin granule clusters via low-voltage scanning electron microscopy...
November 18, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27852726/thyroid-hormone-regulated-genes-in-cerebral-cortex-development
#10
Juan Bernal
The physiological and developmental effects of thyroid hormones are mainly due to the control of gene expression after interaction of T3 with the nuclear receptors. To understand the role of thyroid hormones on cerebral cortex development, knowledge of the genes regulated by T3 during specific stages of development is required. In our laboratory we previously identified genes regulated by T3 in primary cerebrocortical cells in culture. By comparing these data with transcriptomics of purified cell types from the developing cortex, the cellular targets of T3 can be identified...
November 16, 2016: Journal of Endocrinology
https://www.readbyqxmd.com/read/27849218/-between-neurons-and-synapses-the-contributions-of-cajal-and-athias-to-iberian-medicine-between-the-nineteenth-and-twentieth-centuries
#11
Isabel Amaral, Maria Inês Nogueira, Francisco Rômulo Monte Ferreira
The trajectory of histology at the cusp of the twentieth century in Portugal and Spain is investigated to draw a parallel between the contributions of Santiago Ramón y Cajal and Marck Athias, both of whom were instrumental in the development of experimental medicine in the Iberian Peninsula and recognized as pillars of a new European scientific mindset at the dawn of the twentieth century. In this case study we reflect on the vicissitudes of the construction of science in the "periphery" of Europe, in the context of the historiographical category of center-periphery developed by STEP (Science and Technology in the European Periphery), contrasting the reality in Iberia with the model of German science in the period under study...
November 16, 2016: História, Ciências, Saúde—Manguinhos
https://www.readbyqxmd.com/read/27832662/effects-of-exogenous-interleukin-9-on-the-growth-proliferation-and-activity-of-interstitial-cells-of-cajal-cultured-in-vitro
#12
Lei Huang, Baofeng Du, Yaoyao Gong, Hairong Xu, Jia Lu, Xinmin Si
OBJECTIVES: To evaluate the role of exogenous interleukin-9 (IL-9) in the growth, proliferation and activity of interstitial cells of Cajal (ICCs) cultured in vitro, and to assess its role in maintaining the functions of ICCs. METHODS: ICCs of murine gastric antrum were isolated and cultured in vitro. ICCs were identified with c-Kit and ANO1 immunofluorescent antibodies. Both fluorescence microscope and confocal microscopy were used to observe the effects of IL-9 on the growth, proliferation and activity of ICCs in cultured in vitro...
November 11, 2016: Digestion
https://www.readbyqxmd.com/read/27832100/wiring-economy-of-pyramidal-cells-in-the-juvenile-rat-somatosensory-cortex
#13
Laura Anton-Sanchez, Concha Bielza, Pedro Larrañaga, Javier DeFelipe
Ever since Cajal hypothesized that the structure of neurons is designed in such a way as to save space, time and matter, numerous researchers have analyzed wiring properties at different scales of brain organization. Here we test the hypothesis that individual pyramidal cells, the most abundant type of neuron in the cerebral cortex, optimize brain connectivity in terms of wiring length. In this study, we analyze the neuronal wiring of complete basal arborizations of pyramidal neurons in layer II, III, IV, Va, Vb and VI of the hindlimb somatosensory cortical region of postnatal day 14 rats...
2016: PloS One
https://www.readbyqxmd.com/read/27825164/effect-of-neutrophils-on-gallbladder-interstitial-cajal-like-cells-in-guinea-pig-model-of-acute-cholecystitis
#14
Zhen-Peng Huang, Hu Qiu, Yan Yang, Bao-Ping Yu
BACKGROUND: Acute cholecystitis is a common condition in gallbladder motility disorder. Interstitial Cajal-like cells (ICLCs) in the gallbladder are known as one of the players in the complex motility mechanisms affecting gallbladder motility. AIM: This study explored morphological symptoms and molecular mechanisms underlying gallbladder ICLC changes induced by acute cholecystitis. MATERIALS AND METHODS: Fifteen adult guinea pigs were randomly divided into 3 groups: sham-operated group (healthy controls) and 2 experimental groups wherein these guinea pigs were subjected to common bile duct ligation to induce acute cholecystitis...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27819531/toward-an-understanding-of-regulating-cajal-body-activity-by-protein-modification
#15
Michael D Hebert, Aaron R Poole
The biogenesis of small nuclear ribonucleoproteins (snRNPs), small Cajal body-specific RNPs (scaRNPs), small nucleolar RNPs (snoRNPs) and the telomerase RNP involves Cajal bodies (CBs). Although many components enriched in the CB contain post-translational modifications (PTMs), little is known about how these modifications impact individual protein function within the CB and, in concert with other modified factors, collectively regulate CB activity. Since all components of the CB also reside in other cellular locations, it is also important that we understand how PTMs affect the subcellular localization of CB components...
October 7, 2016: RNA Biology
https://www.readbyqxmd.com/read/27819405/-santiago-ramon-y-cajal-in-literature-cinema-and-television
#16
REVIEW
S Collado-Vazquez, J M Carrillo
INTRODUCTION: The life and work of Santiago Ramon y Cajal has been portrayed in scientific papers, biographical and autobiographical works, comics, films, television series or documentaries that have attempted to reflect upon his life or his contributions to science and to bring him closer to the general public. AIMS: To analyse the different ways Santiago Ramon y Cajal has been represented in literature, cinema and television, and to become more closely acquainted with this scientist through his fictional writings...
November 16, 2016: Revista de Neurologia
https://www.readbyqxmd.com/read/27816691/pancreatic-gastrointestinal-stromal-tumor-a-case-report
#17
Ahmed Elgeidie, El-Sayed Abou El-Magd, Sara Raafat Abu El-Maaty, Amira Kamal El-Hawary
INTRODUCTION: Gastrointestinal stromal tumors (GISTs) are the most common gastrointestinal tract (GIT) tumors of mesenchymal origin. GISTs tend to arise with a higher frequency in the stomach and the small intestine. GISTs that originate from outside of the GIT are defined as extra-gastrointestinal stromal tumors (EGISTs). Among them pancreatic EGISTs are very rare. CASE PRESENTATION: A 30 years old male patient presented with abdominal pain. Triphasic abdominal computed tomography scan with contrast revealed large well defined mass at the pancreatic tail, about 12×11...
August 17, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27815243/bmp4-acts-as-a-dorsal-telencephalic-morphogen-in-a-mouse-embryonic-stem-cell-culture-system
#18
Momoko Watanabe, Ernest S Fung, Felicia B Chan, Jessica S Wong, Margaret Coutts, Edwin S Monuki
The concept of a morphogen - a molecule that specifies two or more cell fates in a concentration-dependent manner - is paradigmatic in developmental biology. Much remains unknown, however, about the existence of morphogens in the developing vertebrate CNS, including the mouse dorsal telencephalic midline (DTM). Bone Morphogenetic Proteins (BMPs) are candidate DTM morphogens, and our previous work demonstrated BMP4 sufficiency to induce one DTM cell fate - that of choroid plexus epithelial cells (CPECs) - in a mouse embryonic stem cell (mESC) culture system...
November 4, 2016: Biology Open
https://www.readbyqxmd.com/read/27804943/-morphological-changes-in-the-colonic-muscular-layer-and-interstitial-cells-of-cajal-in-experimental-acute-ulcerative-colitis
#19
S O Kiryukhin, O V Makarova
AIM: to investigate morphological changes in the muscular layer and an intermuscular population of interstitial cells of Cajal (ICC) in acute ulcerative colitis induced by dextran sulfate sodium (DSS). MATERIAL AND METHODS: Acute colitis was induced by 3% DSS (molecular weight 40 kDa) in drinking water for 5 days; a control animal group was given tap water. Longitudinal colonic sections were histologically examined. Immunofluorescence staining of total preparations with antibodies to c-Kit was employed to assess an ICC population...
2016: Arkhiv Patologii
https://www.readbyqxmd.com/read/27803648/reelin-and-neuropsychiatric-disorders
#20
REVIEW
Kazuhiro Ishii, Ken-Ichiro Kubo, Kazunori Nakajima
Proper neuronal migration and laminar formation during corticogenesis is essential for normal brain function. Disruption of these developmental processes is thought to be involved in the pathogenesis of some neuropsychiatric conditions. Especially, Reelin, a glycoprotein mainly secreted by the Cajal-Retzius cells and a subpopulation of GABAergic interneurons, has been shown to play a critical role, both during embryonic and postnatal periods. Indeed, animal studies have clearly revealed that Reelin is an essential molecule for proper migration of cortical neurons and finally regulates the cell positioning in the cortex during embryonic and early postnatal stages; by contrast, Reelin signaling is closely involved in synaptic function in adulthood...
2016: Frontiers in Cellular Neuroscience
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