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https://www.readbyqxmd.com/read/27877076/cardiomyogenic-differentiation-of-human-dental-follicle-derived-stem-cells-by-suberoylanilide-hydroxamic-acid-and-their-in-vivo-homing-property
#1
Iel-Yong Sung, Han-Na Son, Imran Ullah, Dinesh Bharti, Ju-Mi Park, Yeong-Cheol Cho, June-Ho Byun, Young-Hoon Kang, Su-Jin Sung, Jong-Woo Kim, Gyu-Jin Rho, Bong-Wook Park
The purpose of the present study was to investigate the in vitro cardiomyogenic differentiation potential of human dental follicle-derived stem cells (DFCs) under the influence of suberoylanilide hydroxamic acid (SAHA), a member of the histone deacetylase inhibitor family, and analyze the in vivo homing capacity of induced cardiomyocytes (iCMs) when transplanted systemically. DFCs from extracted wisdom teeth showed mesenchymal stem cell (MSC) characteristics such as plate adherent growing, expression of MSC markers (CD44, CD90, and CD105), and mesenchymal lineage-specific differentiation potential...
2016: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/27877072/cultured-human-periosteum-derived-cells-can-differentiate-into-osteoblasts-in-a-perioxisome-proliferator-activated-receptor-gamma-mediated-fashion-via-bone-morphogenetic-protein-signaling
#2
Jin-Eun Chung, Jin-Ho Park, Jeong-Won Yun, Young-Hoon Kang, Bong-Wook Park, Sun-Chul Hwang, Yeong-Cheol Cho, Iel-Yong Sung, Dong Kyun Woo, June-Ho Byun
The differentiation of mesenchymal stem cells towards an osteoblastic fate depends on numerous signaling pathways, including activation of bone morphogenetic protein (BMP) signaling components. Commitment to osteogenesis is associated with activation of osteoblast-related signal transduction, whereas inactivation of this signal transduction favors adipogenesis. BMP signaling also has a critical role in the processes by which mesenchymal stem cells undergo commitment to the adipocyte lineage. In our previous study, we demonstrated that an agonist of the perioxisome proliferator-activated receptor γ (PPARγ), a master regulator of adipocyte differentiation, stimulates osteoblastic differentiation of cultured human periosteum-derived cells...
2016: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/27864127/no-difference-between-latiglutenase-and-placebo-in-reducing-villous-atrophy-or-improving-symptoms-in-patients-with-symptomatic-celiac-disease
#3
Joseph A Murray, Ciarán P Kelly, Peter H R Green, Annette Marcantonio, Tsung-Teh Wu, Markku Mäki, Daniel C Adelman
BACKGROUND & AIMS: Gluten ingestion leads to symptoms and small intestinal mucosal injury in patients with celiac disease. The only option is the strict lifelong exclusion of dietary gluten, which is difficult to accomplish. Many patients following a gluten-free diet continue to have symptoms and have small intestinal mucosal injury. Non-dietary therapies are needed. We performed a phase 2 study of the ability of latiglutenase, an orally administered mixture of 2 recombinant gluten-targeting proteases, to reduce mucosal morphometric measures in biopsies from patients with celiac disease...
November 15, 2016: Gastroenterology
https://www.readbyqxmd.com/read/27820846/preclinical-immunomodulation-by-the-probiotic-bifidobacterium-breve-m-16v-in-early-life
#4
Maria Del Mar Rigo-Adrover, Àngels Franch, Margarida Castell, Francisco José Pérez-Cano
This study aimed to investigate the effect of supplementation with the probiotic Bifidobacterium breve M-16V on the maturation of the intestinal and circulating immune system during suckling. In order to achieve this purpose, neonatal Lewis rats were supplemented with the probiotic strain from the 6th to the 18th day of life. The animals were weighed during the study, and faecal samples were obtained and evaluated daily. On day 19, rats were euthanized and intestinal wash samples, mesenteric lymph node (MLN) cells, splenocytes and intraepithelial lymphocytes (IEL) were obtained...
2016: PloS One
https://www.readbyqxmd.com/read/27819346/novel-cd200-homologues-isec1-and-isec2-are-gastrointestinal-secretory-cell-specific-ligands-of-inhibitory-receptor-cd200r
#5
Toshiyuki Kojima, Kiichiro Tsuchiya, Shinji Ikemizu, Soichiro Yoshikawa, Yoshinori Yamanishi, Mamoru Watanabe, Hajime Karasuyama
CD200R is an inhibitory receptor expressed on myeloid cells and some lymphoid cells, and plays important roles in negatively regulating immune responses. CD200 is the only known ligand of CD200R and broadly distributed in a variety of cell types. Here we identified novel CD200 homologues, designated iSEC1 and iSEC2, that are expressed exclusively by secretory cell lineages in the gastrointestinal epithelium while authentic CD200 is expressed by none of epithelial cells including secretory cells. Both iSEC1 and iSEC2 could bind to CD200R but not other members of the CD200R family...
November 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27812617/analysis-of-speech-and-tongue-motion-in-normal-and-post-glossectomy-speaker-using-cine-mri
#6
Jinhee Ha, Iel-Yong Sung, Jang-Ho Son, Maureen Stone, Robert Ord, Yeong-Cheol Cho
Objective: Since the tongue is the oral structure responsible for mastication, pronunciation, and swallowing functions, patients who undergo glossectomy can be affected in various aspects of these functions. The vowel /i/ uses the tongue shape, whereas /u/ uses tongue and lip shapes. The purpose of this study is to investigate the morphological changes of the tongue and the adaptation of pronunciation using cine MRI for speech of patients who undergo glossectomy. Material and Methods: Twenty-three controls (11 males and 12 females) and 13 patients (eight males and five females) volunteered to participate in the experiment...
September 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/27809400/structural-analysis-of-endothelial-projections-from-mesenteric-arteries
#7
Nadia Maarouf, Maria Sancho, Tobias Fürstenhaupt, Cam Ha Tran, Donald G Welsh
OBJECTIVE: Endothelial and smooth muscle cells must communicate with one another to regulate arterial diameter. A key structure driving heterocellular communication is the endothelial projection, a thin extension that crosses the internal elastic lamina (IEL) making contact with smooth muscle. This study sought to define the precise structural composition of endothelial projections in the mesenteric circulation. METHODS: Third and fourth order mesenteric arteries from hamster were prepared for electron microscopy...
November 3, 2016: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/27803799/approach-to-patients-with-refractory-coeliac-disease
#8
REVIEW
Ikram Nasr, Iman Nasr, Hannah Campling, Paul J Ciclitira
Refractory coeliac disease (RCD) is a recognised complication, albeit very rare, of coeliac disease (CD). This condition is described when individuals with CD continue to experience enteropathy and subsequent or ongoing malabsorption despite strict adherence to a diet devoid of gluten for at least 12 months and when all other causes mimicking this condition are excluded. Depending on the T-cell morphology and T-cell receptor (TCR) clonality at the β/γ loci, RCD can be subdivided into type 1 (normal intra-epithelial lymphocyte morphology, polyclonal TCR population) and type 2 (aberrant IELs with clonal TCR)...
2016: F1000Research
https://www.readbyqxmd.com/read/27704745/effects-of-yeast-products-on-the-intestinal-morphology-barrier-function-cytokine-expression-and-antioxidant-system-of-weaned-piglets
#9
Huan-Sheng Yang, Fei Wu, Li-Na Long, Tie-Jun Li, Xia Xiong, Peng Liao, Hong-Nan Liu, Yu-Long Yin
The goal of this study was to evaluate the effects of a mixture of yeast culture, cell wall hydrolysates, and yeast extracts (collectively "yeast products," YP) on the performance, intestinal physiology, and health of weaned piglets. A total of 90 piglets weaned at 21 d of age were blocked by body weight, sex, and litter and randomly assigned to one of three treatments for a 14-d feeding experiment, including (1) a basal diet (control), (2) 1.2 g/kg of YP, and (3) 20 mg/kg of colistin sulfate (CSE). No statistically significant differences were observed in average daily feed intake, average daily weight gain, or gain-to-feed ratio among CSE, YP, and control piglets...
2016: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/27672296/may-the-assessment-of-baseline-mucosal-molecular-pattern-predict-the-development-of-gluten-related-disorders-among-microscopic-enteritis
#10
Giuseppe Losurdo, Floriana Giorgio, Domenico Piscitelli, Lucia Montenegro, Claudia Covelli, Maria Grazia Fiore, Antonio Giangaspero, Andrea Iannone, Mariabeatrice Principi, Annacinzia Amoruso, Michele Barone, Alfredo Di Leo, Enzo Ierardi
AIM: To evaluate mucosal baseline mRNA expression of tissue transglutaminase 2 (tTG2), interferon gamma (IFNγ), toll-like receptor 2 (TLR2) and Myeloid Differentiation factor 88 (MyD88) in patients with microscopic enteritis (ME). METHODS: We retrospectively enrolled 89 patients with ME of different etiology, which was defined within a 2-year mean period of follow-up. Baseline histological examination was performed on Hematoxylin-Eosin stained sections and CD3 lymphocyte immunohistochemistry was used for intraepithelial lymphocyte count (IELs)...
September 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27663425/intraepithelial-lymphocytes-subsets-in-different-forms-of-celiac-disease
#11
M Sánchez-Castañon, B G Castro, M Toca, C Santacruz, M Arias-Loste, P Iruzubieta, J Crespo, Marcos López-Hoyos
AIM: The enumeration of intraepithelial lymphocytes subsets (total, γδ, and CD3(-) IELs) by flow cytometry (FCM), named as IEL lymphogram, constitutes a useful tool for celiac disease (CD) diagnosis. The aim of this study was to quantify IELs by FCM and their diagnostic value to differentiate active, silent and potential CD. METHODS: Prospective study of 60 active and 20 silent CD patients, and 161 controls in which duodenal biopsy and IEL quantification by FCM was performed...
December 2016: Auto- Immunity Highlights
https://www.readbyqxmd.com/read/27652377/human-%C3%AE-%C3%AE-t-cells-augment-antigen-presentation-in-listeria-monocytogenes-infection
#12
Yuli Zhu, Huaishan Wang, Yi Xu, Yu Hu, Hui Chen, Lianxian Cui, Jianmin Zhang, Wei He
Circulating γδ T cells in healthy individuals rapidly respond to bacterial and viral pathogens. Many studies have demonstrated that γδ T cells are activated and expanded by Listeria monocytogenes (L.monocytogenes), a foodborne bacterial pathogen with high fatality rates. However, the roles of γδ T cells during L.monocytogenes infection are not clear. In the present study, we characterized the morphological characteristics of phagocytosis in γδ T cells after L.monocytogenes infection using transmission electron microscopy...
September 19, 2016: Molecular Medicine
https://www.readbyqxmd.com/read/27635640/lymphocytic-esophagitis-a-histologic-pattern-with-emerging-clinical-ramifications
#13
Mikhail Lisovsky, Maria Westerhoff, Xuchen Zhang
The clinical significance of lymphocytic esophagitis (LyE), which is characterized by the prominence of peripapillary intraepithelial lymphocytes (IELs) without significant granulocytosis, remains poorly understood. During the last few years, plausible clinical correlates and novel approaches for stratification of LyE have started to emerge. Association with Crohn's disease has been established in children, but is not observed in adults. In adults, the form of LyE showing CD4(+) -predominant IELs has been recently found to be associated with non-achalasia primary motility abnormalities...
September 16, 2016: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/27612641/interleukin-15-dependent-t-cell-like-innate-intraepithelial-lymphocytes-develop-in-the-intestine-and-transform-into-lymphomas-in-celiac-disease
#14
Julien Ettersperger, Nicolas Montcuquet, Georgia Malamut, Nicolas Guegan, Silvia Lopez-Lastra, Ségolène Gayraud, Christian Reimann, Elodie Vidal, Nicolas Cagnard, Patrick Villarese, Isabelle Andre-Schmutz, Rita Gomes Domingues, Cristina Godinho-Silva, Henrique Veiga-Fernandes, Ludovic Lhermitte, Vahid Asnafi, Elizabeth Macintyre, Christophe Cellier, Kheira Beldjord, James P Di Santo, Nadine Cerf-Bensussan, Bertrand Meresse
The nature of gut intraepithelial lymphocytes (IELs) lacking antigen receptors remains controversial. Herein we showed that, in humans and in mice, innate intestinal IELs expressing intracellular CD3 (iCD3(+)) differentiate along an Id2 transcription factor (TF)-independent pathway in response to TF NOTCH1, interleukin-15 (IL-15), and Granzyme B signals. In NOTCH1-activated human hematopoietic precursors, IL-15 induced Granzyme B, which cleaved NOTCH1 into a peptide lacking transcriptional activity. As a result, NOTCH1 target genes indispensable for T cell differentiation were silenced and precursors were reprogrammed into innate cells with T cell marks including intracellular CD3 and T cell rearrangements...
September 20, 2016: Immunity
https://www.readbyqxmd.com/read/27585789/the-role-of-ly49e-receptor-expression-on-murine-intraepithelial-lymphocytes-in-intestinal-cancer-development-and-progression
#15
Aline Van Acker, Els Louagie, Jessica Filtjens, Sylvie Taveirne, Els Van Ammel, Tessa Kerre, Dirk Elewaut, Tom Taghon, Bart Vandekerckhove, Jean Plum, Georges Leclercq
Ly49E is a member of the Ly49 family of NK receptors and is distinct from other members of this family on the basis of its structural properties, expression pattern and ligand recognition. Importantly, Ly49E receptor expression is high on small intestinal and colonic intraepithelial lymphocytes (IELs). Intestinal IELs are regulators of the mucosal immune system and contribute to front-line defense at the mucosal barrier, including anti-tumor immune response. Whereas most Ly49 receptors have MHC class-I ligands, we showed that Ly49E is instead triggered by urokinase plasminogen activator (uPA)...
September 1, 2016: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/27563173/tlr2-dependent-signaling-for-il-15-production-is-essential-for-the-homeostasis-of-intestinal-intraepithelial-lymphocytes
#16
Yuan Qiu, Aimin Pu, Hong Zheng, Minqiang Liu, Weigang Chen, Wensheng Wang, Weidong Xiao, Hua Yang
TLR2 signaling is related to colitis and involved in regulation of innate immunity in the intestinal tract, but the mechanisms remain unclear. The aim of this study is to investigate how TLR2 affects differentiation of intraepithelial lymphocytes (IELs) and regulates the susceptibility of colitis. IELs were isolated from the small intestine and colon of mice, respectively. The IEL phenotype, activation, and apoptosis were examined using flow cytometry and RT-PCR. IL-15 expression and IEL location were detected through immunohistochemistry...
2016: Mediators of Inflammation
https://www.readbyqxmd.com/read/27528202/the-ontogeny-of-butyrophilin-like-btnl-1-and-btnl6-in-murine-small-intestine
#17
Cristina Lebrero-Fernández, Anna Bas-Forsberg
Murine Butyrophilin-like (Btnl) 1 and Btnl6 are primarily restricted to intestinal epithelium where they regulate the function of intraepithelial T lymphocytes. We recently demonstrated that Btnl1 and Btnl6 can form an intra-family heterocomplex and that the Btnl1-Btnl6 complex selectively expands Vγ7Vδ4 TCR IELs. To define the regulation of Btnl expression in the small intestine during ontogeny we examined the presence of Btnl1 and Btnl6 in the small bowel of newborn to 4-week-old mice. Although RNA expression of Btnl1 and Btnl6 was detected in the small intestine at day 0, Btnl1 and Btnl6 protein expression was substantially delayed and was not detectable in the intestinal epithelium until the mice reached 2-3 weeks of age...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27507806/spontaneous-lung-lesions-in-aging-laboratory-rabbits-oryctolagus-cuniculus
#18
T K Cooper, J W Griffith, Z C Chroneos, J M Izer, L B Willing, X Peng
Spontaneous age-related lesions of laboratory rabbits are not well documented in the contemporary scientific literature. A retrospective study of diagnostic necropsies of 36 rabbits >2 years of age found a number of common lung lesions. Fibromuscular intimal hyperplasia affected medium and to a lesser extent large pulmonary arteries and was present to a variable extent in all 36 rabbits >2 years of age. The lesions were characterized by fragmentation and/or reduplication of the internal elastic lamina (IEL), proliferation of smoothelin+/alpha-smooth muscle actin (α-SMA)+/vimentin- smooth muscle cells and fewer smoothelin-/α-SMA+/vimentin+ myofibroblasts, and intimal deposition of collagen without thrombosis, embolism, or evidence of pulmonary hypertension...
August 9, 2016: Veterinary Pathology
https://www.readbyqxmd.com/read/27499921/inflammatory-response-in-serrated-precursor-lesions-of-the-colon-classified-according-to-who-entities-clinical-parameters-and-phenotype-genotype-correlation
#19
Tilman T Rau, Raja Atreya, Daniela Aust, Gustavo Baretton, Matthias Eck, Katharina Erlenbach-Wünsch, Arndt Hartmann, Alessandro Lugli, Robert Stöhr, Michael Vieth, Anna M Wirsing, Inti Zlobec, Tiemo Katzenberger
Studies on traditional serrated adenoma (TSA) and sessile serrated adenoma with dysplasia (SSA-D) are rare due to the low frequency of these lesions, which are well defined by the latest WHO classification. However, introducing new morphological criteria such as intra-epithelial lymphocytes (IELs) might facilitate colorectal polyp diagnoses. Additionally, the phenotype-genotype correlation needs to be updated as the terminology has repeatedly changed. This study analysed 516 polyps, consisting of 118 classical adenomas (CAD), 116 hyperplastic polyps (HPP), 179 SSAs, 41 SSA-Ds, and 62 TSAs...
April 2016: Journal of Pathology. Clinical Research
https://www.readbyqxmd.com/read/27475104/evaluation-of-differentially-expressed-immune-related-genes-in-intestine-of-pelodiscus-sinensis-after-intragastric-challenge-with-lipopolysaccharide-based-on-transcriptome-analysis
#20
Jiehao Xu, Jing Zhao, Yiqun Li, Yiyi Zou, Binjie Lu, Yuyin Chen, Youzhi Ma, Haisheng Xu
Pelodiscus sinensis is the most common turtle species that has been raised in East and Southeast Asia. However, there are still limited studies about the immune defense mechanisms in its small intestine until now. In the present research, histological analysis and transcriptome analysis was performed on the small intestine of P. sinensis after intragastric challenge with LPS to explore its mechanisms of immune responses to pathogens. The result showed the number of intraepithelial lymphocytes (IELs) and goblet cells (GCs) in its intestine increased significantly at 48 h post-challenge with LPS by intragastrical route, indicating clearly the intestinal immune response was induced...
September 2016: Fish & Shellfish Immunology
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