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https://www.readbyqxmd.com/read/28447187/the-enteric-nervous-system-another-forgotten-autonomic-target-in-viral-infections
#1
EDITORIAL
Francisco Javier Carod-Artal
No abstract text is available yet for this article.
April 27, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28446880/shifts-in-the-gut-microbiota-composition-due-to-depleted-bone-marrow-beta-adrenergic-signaling-are-associated-with-suppressed-inflammatory-transcriptional-networks-in-the-mouse-colon
#2
Tao Yang, Niousha Ahmari, Jordan T Schmidt, Ty Redler, Rebeca Arocha, Kevin Pacholec, Kacy L Magee, Wendi Malphurs, Jennifer L Owen, Gregory A Krane, Eric Li, Gary P Wang, Thomas W Vickroy, Mohan K Raizada, Christopher J Martyniuk, Jasenka Zubcevic
The brain-gut axis plays a critical role in the regulation of different diseases, many of which are characterized by sympathetic dysregulation. However, a direct link between sympathetic dysregulation and gut dysbiosis remains to be illustrated. Bone marrow (BM)-derived immune cells continuously interact with the gut microbiota to maintain homeostasis in the host. Their function is largely dependent upon the sympathetic nervous system acting via adrenergic receptors present on the BM immune cells. In this study, we utilized a novel chimera mouse that lacks the expression of BM beta1/2 adrenergic receptors (b1/2-ARs) to investigate the role of the sympathetic drive to the BM in gut and microbiota homeostasis...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28440972/a-comparison-between-the-diagnostic-accuracy-of-frozen-section-and-permanent-section-analyses-in-central-nervous-system
#3
Razie Amraei, Afshin Moradi, Hanieh Zham, Mahsa Ahadi, Maryam Baikpour, Azadeh Rakhshan
Objective: Using diagnostic pathological methods during surgery is a valuable means of determining the appropriate management for patients. Application of Frozen Section in CNS surgeries might face challenges due to friability of brain tissue and its relative inaccessibility. Various studies have evaluated the diagnostic acuity of frozen section compared to gold standard but results have been quite inconsistent. We conducted the present study to evaluate the accuracy of cryostat in diagnosing central nervous system tumors compared to the Gold Standard method...
March 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28439004/endocannabinoid-system-acts-as-a-regulator-of-immune-homeostasis-in-the-gut
#4
Nandini Acharya, Sasi Penukonda, Tatiana Shcheglova, Adam T Hagymasi, Sreyashi Basu, Pramod K Srivastava
Endogenous cannabinoids (endocannabinoids) are small molecules biosynthesized from membrane glycerophospholipid. Anandamide (AEA) is an endogenous intestinal cannabinoid that controls appetite and energy balance by engagement of the enteric nervous system through cannabinoid receptors. Here, we uncover a role for AEA and its receptor, cannabinoid receptor 2 (CB2), in the regulation of immune tolerance in the gut and the pancreas. This work demonstrates a major immunological role for an endocannabinoid. The pungent molecule capsaicin (CP) has a similar effect as AEA; however, CP acts by engagement of the vanilloid receptor TRPV1, causing local production of AEA, which acts through CB2...
April 24, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28433712/common-phox2b-poly-alanine-contractions-impair-ret-gene-transcription-predisposing-to-hirschsprung-disease
#5
Eleonora Di Zanni, Annalisa Adamo, Elga Belligni, Margherita Lerone, Giuseppe Martucciello, Girolamo Mattioli, Alessio Pini Prato, Roberto Ravazzolo, Margherita Silengo, Tiziana Bachetti, Isabella Ceccherini
HSCR is a congenital disorder of the enteric nervous system, characterized by the absence of neurons along a variable length of the gut resulting from loss-of-function RET mutations. Congenital Central Hypoventilation Syndrome (CCHS) is a rare neurocristopathy characterized by impaired response to hypercapnia and hypoxemia caused by heterozygous mutations of the PHOX2B gene, mostly polyalanine (polyA) expansions but also missense, nonsense, and frameshift mutations, while polyA contractions are common in the population and believed neutral...
April 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28432311/enteric-innervation-combined-with-proteomics-for-the-evaluation-of-the-effects-of-chronic-fluoride-exposure-on-the-duodenum-of-rats
#6
Carina Guimarães de Souza Melo, Juliana Vanessa Colombo Martins Perles, Jacqueline Nelisis Zanoni, Sara Raquel Garcia de Souza, Erika Xavier Santos, Aline de Lima Leite, Alessandro Domingues Heubel, Camila Oliveira E Souza, Juliana Gadelha de Souza, Marília Afonso Rabelo Buzalaf
Ingested fluoride (F) is absorbed mainly in the small intestine, which is controlled by the Enteric Nervous System (ENS). Although important intestinal symptomatology has been described after excessive F exposure, there have been no studies reporting the effects of F on the ENS. In this study, the effects of chronic F exposure were evaluated on the duodenums of rats through proteomic and morphological analyses. Concentrations of 0, 10, or 50 ppm of F were applied to the drinking water for 30 days. Immunofluorescence techniques were performed in the myenteric plexus of the duodenum to detect HuC/D, neuronal nitric oxide (nNOS), vasoactive intestinal peptide (VIP), calcitonin gene related peptide (CGRP), and substance P (SP)...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28422949/heparin-binding-egf-like-growth-factor-promotes-neuronal-nitric-oxide-synthase-expression-and-protects-the-enteric-nervous-system-after-necrotizing-enterocolitis
#7
Yu Zhou, Yijie Wang, Jacob Olson, Jixin Yang, Gail E Besner
BACKGROUND: Neonatal necrotizing enterocolitis (NEC) is associated with alterations of the ENS, with loss of neuronal nitric oxide synthase (nNOS) expressing neurons in the intestine. The aims of this study were to investigate the roles of heparin binding EGF-like growth factor (HB-EGF) in neural stem cell (NSC) differentiation, nNOS expression, and effects on ENS integrity during experimental NEC. METHODS: The effects of HB-EGF on NSC differentiation and nNOS production were determined using cultured enteric NSC...
April 19, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28420791/adult-enteric-nervous-system-in-health-is-maintained-by-a-dynamic-balance-between-neuronal-apoptosis-and-neurogenesis
#8
Subhash Kulkarni, Maria-Adelaide Micci, Jenna Leser, Changsik Shin, Shiue-Cheng Tang, Ya-Yuan Fu, Liansheng Liu, Qian Li, Monalee Saha, Cuiping Li, Grigori Enikolopov, Laren Becker, Nikolai Rakhilin, Michael Anderson, Xiling Shen, Xinzhong Dong, Manish J Butte, Hongjun Song, E Michelle Southard-Smith, Raj P Kapur, Milena Bogunovic, Pankaj J Pasricha
According to current dogma, there is little or no ongoing neurogenesis in the fully developed adult enteric nervous system. This lack of neurogenesis leaves unanswered the question of how enteric neuronal populations are maintained in adult guts, given previous reports of ongoing neuronal death. Here, we confirm that despite ongoing neuronal cell loss because of apoptosis in the myenteric ganglia of the adult small intestine, total myenteric neuronal numbers remain constant. This observed neuronal homeostasis is maintained by new neurons formed in vivo from dividing precursor cells that are located within myenteric ganglia and express both Nestin and p75NTR, but not the pan-glial marker Sox10...
April 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28420434/the-neuroprotective-effects-of-human-bone-marrow-mesenchymal-stem-cells-are-dose-dependent-in-tnbs-colitis
#9
Ainsley M Robinson, Ahmed A Rahman, Sarah Miller, Rhian Stavely, Samy Sakkal, Kulmira Nurgali
BACKGROUND: The incidence of inflammatory bowel diseases (IBD) is increasing worldwide with patients experiencing severe impacts on their quality of life. It is well accepted that intestinal inflammation associates with extensive damage to the enteric nervous system (ENS), which intrinsically innervates the gastrointestinal tract and regulates all gut functions. Hence, treatments targeting the enteric neurons are plausible for alleviating IBD and associated complications. Mesenchymal stem cells (MSCs) are gaining wide recognition as a potential therapy for many diseases due to their immunomodulatory and neuroprotective qualities...
April 18, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28417537/the-effects-and-mechanism-of-action-of-methane-on-ileal-motor-function
#10
Y M Park, Y J Lee, Z Hussain, Y H Lee, H Park
BACKGROUND: Methane has been associated with constipation-predominant irritable bowel syndrome, slowing intestinal transit time by augmenting contractile activity. However, the precise mechanism underlying this effect remains unclear. Therefore, we investigated the mechanisms underlying the effect of methane on contractile activity, and whether such effects are mediated by nerve impulses or muscular contraction. METHODS: We connected guinea pig ileal muscle strips to a force/tension transducer and measured amplitudes of contraction in response to electrical field stimulation (EFS; 1, 2, 8, 16 Hz) following methane infusion in the presence of tetradotoxin (TTX), atropine, guanethidine, or GR 113808...
April 18, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28417221/co-localization-of-zinc-transporter-3-znt3-with-sensory-neuromediators-and-or-neuromodulators-in-the-enteric-nervous-system-of-the-porcine-esophagus
#11
Joanna Wojtkiewicz, Liliana Rytel, Krystyna Makowska, Sławomir Gonkowski
Zinc transporter 3 (ZnT3) is one of the zinc transporters family. It is closely connected to the nervous system, where enables the transport of zinc ions from the cytoplasm to synaptic vesicles. This substance has been described within the central and peripheral nervous system, especially in the enteric nervous system (ENS). The aim of the present study was to describe the co-localization of ZnT3 with selected neuromediators and/or neuromodulators participating in sensory stimuli conduction in neurons of the ENS within the porcine esophagus...
April 17, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28413456/role-of-stem-cell-growth-factor-c-kit-in-the-pathogenesis-of-irritable-bowel-syndrome
#12
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/28412807/-clinical-features-risk-factors-and-progresses-on-treatment-of-recurrent-vogt-koyanagi-harada-disease
#13
S S Jia, C Zhao, X S Liu, M F Zhang
Vogt-Koyanagi-Harada disease(VKH) is a bilateral, granulomatous panuveitis associated with central nervous system, auditory, and integumentary manifestations. Clinically, VKH usually responds well to early aggressive glucocorticosteroid treatment and may be cured without any clinically significant sequelae. Some patients, however, may enter the chronic recurrent phase, which may result in marked loss of vision due to complications such as complicated cataract, secondary glaucoma and maculopathy. Recurrent VKH is mainly characterized by anterior uveitis associated with thickening of the choroid...
April 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28409324/generation-and-characterization-of-polyclonal-and-monoclonal-antibodies-to-human-ntpdase2-including-a-blocking-antibody
#14
Julie Pelletier, Hervé Agonsanou, Ninotchska Delvalle, Michel Fausther, Mabrouka Salem, Brian Gulbransen, Jean Sévigny
Nucleoside triphosphate diphosphohydrolase-2 (NTPDase2) is an ectonucleotidase that modulates P2 receptor activation by hydrolyzing ATP to ADP. In rodents, NTPDase2 is expressed by several specialized cell types such as vascular adventitial cells, neuroglial cells, hepatic portal fibroblasts, gustatory type I cells, and cells within the connective tissues of reproductive and gastrointestinal organs. Much less is known regarding the expression and function of NTPDase2 in humans. Here, we developed specific research tools to study human NTPDase2...
April 13, 2017: Purinergic Signalling
https://www.readbyqxmd.com/read/28405164/a-dual-mediated-liposomal-drug-delivery-system-targeting-the-brain-rational-construction-integrity-evaluation-across-the-blood-brain-barrier-and-the-transporting-mechanism-to-glioma-cells
#15
Chang Liu, Xiao-Na Liu, Gui-Ling Wang, Yu Hei, Shuai Meng, Ling-Fei Yang, Lan Yuan, Ying Xie
As the global population ages, cancer rates increase worldwide, and degenerative diseases of the central nervous system (CNS), brain tumors, and inflammation threaten human health more frequently. We designed a dual-mediated (receptor-mediated and adsorption-mediated) liposome, named transferrin-cell penetrating peptide-sterically stabilized liposome (TF-CPP-SSL), to improve therapy for gliomas through combining molecular recognition of transferrin receptors (TF-Rs) on the blood-brain barrier (BBB) and glioma cells with the internalization and lysosomal escaping ability of CPP...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28403821/defining-the-transcriptomic-landscape-of-the-developing-enteric-nervous-system-and-its-cellular-environment
#16
Sweta Roy-Carson, Kevin Natukunda, Hsien-Chao Chou, Narinder Pal, Caitlin Farris, Stephan Q Schneider, Julie A Kuhlman
BACKGROUND: Motility and the coordination of moving food through the gastrointestinal tract rely on a complex network of neurons known as the enteric nervous system (ENS). Despite its critical function, many of the molecular mechanisms that direct the development of the ENS and the elaboration of neural network connections remain unknown. The goal of this study was to transcriptionally identify molecular pathways and candidate genes that drive specification, differentiation and the neural circuitry of specific neural progenitors, the phox2b expressing ENS cell lineage, during normal enteric nervous system development...
April 12, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28403373/different-inoculum-loads-of-toxoplasma-gondii-induce-reduction-of-myenteric-neurons-of-the-rat-colon
#17
Rafael Isolani Ferezin, Suellen Lais Vicentino-Vieira, Marcelo Biondaro Góis, Eduardo José de Almeida Araújo, Gessilda de Alcântara Nogueira de Melo, João Luis Garcia, Débora de Mello Gonçales Sant'Ana
Toxoplasmosis, a disease caused by Toxoplasma gondii, is an important health problem, especially in immunocompromised hosts. T. gondii uses the gut wall as an infection gateway, with tropism for muscular and nervous tissues causing intestinal alterations, including some in the enteric nervous system. This study aims at investigating the colon of rats infected by T. gondii in order to understand how the amount of oocysts influences in myenteric neuronal changes. Sixty Wistar rats (Rattus norvegicus) were divided into six groups...
January 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/28394007/cocaine-and-amphetamine-regulated-transcript-peptide-cart-in-the-nerve-fibers-of-the-porcine-gallbladder-wall-under-physiological-conditions-and-after-salmonella-enteritidis-lipopolysaccharides-administration
#18
Anita Mikołajczyk, Krystyna Makowska
Cocaine- and amphetamine-regulated transcript (CART) peptide is the substance distributed in various parts of the nervous system. The majority of previous studies described this substance in the brain, where it takes part in regulatory processes connected with the food intake. CART is also present in the peripheral nervous system, especially in the enteric neurons and nerves located in the wall of the stomach and intestine, but many aspects of distribution and functions of this peptide in the digestive organs remain unknown...
April 10, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28388962/the-involvement-of-mast-cells-in-the-irinotecan-induced-enteric-neurons-loss-and-reactive-gliosis
#19
Ludmila T Nogueira, Deiziane V S Costa, Antoniella S Gomes, Conceição S Martins, Angeline M H P Silva, Juliana M Coelho-Aguiar, Patrícia Castelucci, Roberto C P Lima-Júnior, Renata F C Leitão, Vivaldo Moura-Neto, Gerly A C Brito
BACKGROUND: The irinotecan (CPT-11) causes intestinal mucositis and diarrhea that may be related to changes in the enteric nervous system (ENS). In inflammatory condition, mast cells release a variety of pro-inflammatory mediators that can interact with the ENS cells. It has not been explored whether CPT-11 is able to alter the enteric glial and neuronal cell, and the role of mast cells in this effect. Therefore, this study was conducted to investigate the effect of CPT-11 on the enteric glial and neuronal cells, as well as to study the role of mast cells in the CPT-11-induced intestinal mucositis...
April 7, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28379965/tnfa-tnfr2-signaling-is-required-for-glial-ensheathment-at-the-dorsal-root-entry-zone
#20
Cody J Smith, Michael A Wheeler, Lindsay Marjoram, Michel Bagnat, Christopher D Deppmann, Sarah Kucenas
Somatosensory information from the periphery is routed to the spinal cord through centrally-projecting sensory axons that cross into the central nervous system (CNS) via the dorsal root entry zone (DREZ). The glial cells that ensheath these axons ensure rapid propagation of this information. Despite the importance of this glial-axon arrangement, how this afferent nerve is assembled during development is unknown. Using in vivo, time-lapse imaging we show that as centrally-projecting pioneer axons from dorsal root ganglia (DRG) enter the spinal cord, they initiate expression of the cytokine TNFalpha...
April 2017: PLoS Genetics
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