keyword
MENU ▼
Read by QxMD icon Read
search

Claudin-1

keyword
https://www.readbyqxmd.com/read/28812548/bacteroidales-recruit-il-6-producing-intraepithelial-lymphocytes-in-the-colon-to-promote-barrier-integrity
#1
K A Kuhn, H M Schulz, E H Regner, E L Severs, J D Hendrickson, G Mehta, A K Whitney, D Ir, N Ohri, C E Robertson, D N Frank, E L Campbell, S P Colgan
Interactions between the microbiota and distal gut are important for the maintenance of a healthy intestinal barrier; dysbiosis of intestinal microbial communities has emerged as a likely contributor to diseases that arise at the level of the mucosa. Intraepithelial lymphocytes (IELs) are positioned within the epithelial barrier, and in the small intestine they function to maintain epithelial homeostasis. We hypothesized that colon IELs promote epithelial barrier function through the expression of cytokines in response to interactions with commensal bacteria...
August 16, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28812311/nad-replenishment-with-nicotinamide-mononucleotide-protects-blood-brain-barrier-integrity-and-attenuates-delayed-tpa-induced-haemorrhagic-transformation-after-cerebral-ischemia
#2
Chun-Chun Wei, Yuan-Yuan Kong, Xia-Hua, Guo-Qiang Li, Si-Li Zheng, Ming-He Cheng, Pei Wang, Chao-Yu Miao
BACKGROUND AND PURPOSE: Tissue plasminogen activator (tPA) is the only approved pharmacological therapy for acute brain ischemia; however, a major limitation of tPA is the haemorrhagic transformation followed by tPA treatment. Here, we determine whether nicotinamide mononucleotide (NMN), a key intermediate of nicotinamide adenine dinucleotide biosynthesis, would affect tPA-induced haemorrhagic transformation. EXPERIMENTAL APPROACH: Middle cerebral artery occlusion (MCAO) was achieved in CD1 mice by introducing a filament to the left MCA for 5 hours...
August 15, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28805232/the-protective-effect-of-heme-oxygenase-1-against-intestinal-barrier-dysfunction-in-cholestatic-liver-injury-is-associated-with-nf-%C3%AE%C2%BAb-inhibition
#3
Lijing Zhang, Zhenling Zhang, Bojia Liu, Yanling Jin, Yan Tian, Yi Xin, Zhijun Duan
Heme oxygenase-1 (HO-1) is reported to protect against liver injury, but little is known about its effect on the intestinal barrier in cholestatic liver injury. In this study, we investigated the effects of HO-1 and its enzymatic by-product on intestinal barrier dysfunction in bile duct ligation (BDL) rats and explored the possible mechanism. The HO-1 inducer cobalt protoporphyrin (CoPP) and carbon monoxide-releasing molecule-2 (CORM-2) were used; the expression levels of tight junction (TJ) proteins, intestinal inflammation and NF-κB p65 were measured...
August 9, 2017: Molecular Medicine
https://www.readbyqxmd.com/read/28803749/the-effects-of-17%C3%AE-estradiol-on-blood-brain-barrier-integrity-in-the-absence-of-the-estrogen-receptor-alpha-an-in-vitro-model
#4
Serap Erdem Kuruca, Sabriye Karadenizli, Kadriye Akgun-Dar, Aysegul Kapucu, Zulal Kaptan, Gulay Uzum
The blood-brain barrier (BBB), which saves the brain from toxic substances, is formed by endothelial cells. It is mainly composed of tight junction (TJ) proteins existing between endothelial cells. Estrogen is an important regulatory hormone of BBB permeability. It protects the BBB before menopause, but may increase BBB permeability with aging. In addition, nitric oxide modulates BBB permeability. Alcohol impairs the integrity of the BBB with oxidants and inflammatory mediators such as iNOS. We investigated the effects of estrogen on BBB integrity in an in vitro BBB model created with ERα-free HUVEC (human umbilical vein endothelial-like cells) to mimics the menopausal period...
August 10, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28783453/development-of-human-salivary-gland-like-tissue-in-vitro
#5
Marc Burghartz, Simon Lennartz, Matthias Schweinlin, Rudolf Hagen, Norbert Kleinsasser, Stephan Hackenberg, Gudrun Steußloff, Agmal Scherzad, Kathrin Radeloff, Christian Ginzkey, Heike Walles, Marco Metzger
The loss of salivary gland function caused by radiation therapy of the head and neck is a serious condition and it affects a patient's quality of life. The current lack of effective therapies demands new options to be explored. This study tested whether human salivary gland epithelial cells (SGECs) could be successfully cultured on a decellularized porcine gut matrix (SIS-muc) in both mono- and coculture with microvascular endothelial cells (mvECs). By performing immunofluorescence imaging, transmission as well as scanning electron microscopy (SEM), quantitative polymerase chain reaction (qPCR), and an amylase enzyme assay, it was investigated as to what extent the three-dimensional (3D)-cultured cells could maintain their molecular differentiation and the production of working α-amylase (α-AMY) compared with two-dimensional (2D) culture...
August 4, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28782908/ectodysplasin-a-regulates-epithelial-barrier-function-through-sonic-hedgehog-signalling-pathway
#6
Sanming Li, Jing Zhou, Liying Zhang, Juan Li, Jingwen Yu, Ke Ning, Yangluowa Qu, Hui He, Yongxiong Chen, Peter S Reinach, Chia-Yang Liu, Zuguo Liu, Wei Li
Ectodysplasin A (Eda), a member of the tumour necrosis factor superfamily, plays an important role in ectodermal organ development. An EDA mutation underlies the most common of ectodermal dysplasias, that is X-linked hypohidrotic ectodermal dysplasia (XLHED) in humans. Even though it lacks a developmental function, the role of Eda during the postnatal stage remains elusive. In this study, we found tight junctional proteins ZO-1 and claudin-1 expression is largely reduced in epidermal, corneal and lung epithelia in Eda mutant Tabby mice at different postnatal ages...
August 7, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28780155/oxyresveratrol-improves-tight-junction-integrity-through-the-pkc-and-mapk-signaling-pathways-in-caco-2%C3%A2-cells
#7
HyunA Jo, Dahyun Hwang, Jeong-Keun Kim, Young-Hee Lim
Strengthening intestinal tight junctions (TJ) provides an effective barrier from the external environment and is important for recovery from inflammatory bowel disease. Oxyresveratrol (OXY), an isomer of hydroxylated resveratrol, is isolated from many plants. The aim of this study was to investigate the effect of OXY on intestinal TJ and to elucidate the mechanism underlying the OXY-mediated increase in TJ integrity in human intestinal Caco-2 cells. OXY-treated Caco-2 cell monolayers showed decreased monolayer permeability as evaluated by paracellular transport assay...
August 2, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28774952/vitamin-d-supplementation-of-initially-vitamin-d-deficient-mice-diminishes-lung-inflammation-with-limited-effects-on-pulmonary-epithelial-integrity
#8
Shelley Gorman, Alysia G Buckley, Kak-Ming Ling, Luke J Berry, Vanessa S Fear, Stephen M Stick, Alexander N Larcombe, Anthony Kicic, Prue H Hart
In disease settings, vitamin D may be important for maintaining optimal lung epithelial integrity and suppressing inflammation, but less is known of its effects prior to disease onset. Female BALB/c dams were fed a vitamin D3-supplemented (2280 IU/kg, VitD(+)) or nonsupplemented (0 IU/kg, VitD(-)) diet from 3 weeks of age, and mated at 8 weeks of age. Male offspring were fed the same diet as their mother. Some offspring initially fed the VitD(-) diet were switched to a VitD(+) diet from 8 weeks of age (VitD(-/+))...
August 2017: Physiological Reports
https://www.readbyqxmd.com/read/28772350/claudin-1-mir-122-and-apolipoprotein-e-transduction-improves-the-permissivity-of-snu-182-snu-398-and-snu-449-hepatoma-cells-to-hepatitis-c-virus
#9
Carole Fournier, Thomas Walter Hoffmann, Virginie Morel, Véronique Descamps, Jean Dubuisson, Etienne Brochot, Catherine Francois, Gilles Duverlie, Sandrine Castelain, Francois Helle
Hepatitis C virus (HCV) is a human hepatotropic virus but many hepatoma cell lines are not permissive to this virus. In a previous study, we observed that SNU-182, SNU-398 and SNU-449 hepatoma cell lines were non-permissive to HCV. In order to understand the non-permissivity, we evaluated the ability of each cell line to support the different steps of HCV life cycle (entry, replication and production of infectious particles). Using retroviral pseudoparticles pseudotyped with HCV envelope proteins and recombinant HCV produced in cell culture, we observed that low level or absence of claudin-1 expression limited the viral entry process in SNU-182 and SNU-398 cells, respectively...
August 3, 2017: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/28771730/in-ovo-feeding-of-l-arginine-regulates-intestinal-barrier-functions-of-posthatch-broilers-by-activating-the-mtor-signaling-pathway
#10
Tian Gao, Minmeng Zhao, Lin Zhang, Jiaolong Li, Lanlin Yu, Feng Gao, Guanghong Zhou
BACKGROUND: During the last phase of incubation, dramatic physiological and metabolic changes occur in chick embryos, and the supplies of the nutrients and energy are always insufficient. This study was to investigate the effects of in ovo feeding (IOF) of L-arginine (Arg) on the hatchability, growth performance, intestinal development and functions of posthatch broilers. RESULTS: The IOF of Arg increased (P<0.05) the feed intake and body weight gain during 1-21 d and 1-42 d, the intestinal weight of 7 and 21-d-old broilers compared with NC and DG groups...
August 3, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28771130/indigenous-lactobacilli-strains-of-food-and-human-sources-reverse-enteropathogenic-e-coli-o26-h11-induced-damage-in-intestinal-epithelial-cell-lines-effect-on-redistribution-of-tight-junction-proteins
#11
Ruchi Jariwala, Hemanti Mandal, Tamishraha Bagchi
The aim of the study was to investigate the neutralizing effect of lactobacilli isolated from indigenous food and human sources on enteropathogenic Escherichia coli (EPEC) O26 : H11-induced epithelial barrier dysfunction in vitro. This was assessed by transepithelial electrical resistance (TEER) and permeability assays using intestinal cell lines, HT-29 and Caco-2. Furthermore, the expression and distribution of tight junction (TJ) proteins were analysed by qRT-PCR and immunofluorescence assay, respectively...
August 4, 2017: Microbiology
https://www.readbyqxmd.com/read/28769011/chlorpheniramine-increases-paracellular-permeability-to-marker-fluorescein-lucifer-yellow-mediated-by-internalization-of-occludin-in-murine-colonic-epithelial-cells
#12
Aya Manabe, Chisa Furukawa, Satoshi Endo, Kana Marunaka, Tsubasa Nishiyama, Naoko Fujii, Yoshiaki Tabuchi, Toshiyuki Matsunaga, Akira Ikari
Ions, small molecules, and drugs are absorbed in the intestinal epithelium mediated by transcellular and paracellular pathways. The function of various transporters expressing in the apical and basolateral membranes of intestinal epithelial cells has been well characterized. In contrast, claudins and occludin, components of the tight junctions (TJs), determine the paracellular permeability to ions and low molecular weight compounds, but the properties for permeability has not been clarified in detail. In the present study, we examined the effects of anti-histamine drugs, chlorpheniramine and diphenhydramine, on transepithelial electrical resistance (TER) and permeability to lucifer yellow (LY), a marker of paracellular permeability, using murine colonic MCE301 cells...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28766554/campylobacter-jejuni-impairs-sodium-transport-and-epithelial-barrier-function-via-cytokine-release-in-human-colon
#13
R Bücker, S M Krug, V Moos, C Bojarski, M R Schweiger, M Kerick, A Fromm, S Janßen, M Fromm, N A Hering, B Siegmund, T Schneider, C Barmeyer, J D Schulzke
Campylobacter jejuni is the most prevalent cause of foodborne bacterial enteritis worldwide. Patients present with diarrhea and immune responses lead to complications like arthritis and irritable bowel syndrome. Although studies exist in animal and cell models, we aimed at a functional and structural characterization of intestinal dysfunction and the involved regulatory mechanisms in human colon. First, in patients' colonic biopsies, sodium malabsorption was identified as an important diarrheal mechanism resulting from hampered epithelial ion transport via impaired epithelial sodium channel (ENaC) β- and γ-subunit...
August 2, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28762325/activation-of-vimentin-is-critical-to-promote-a-metastatic-potential-of-cholangiocarcinoma-cells
#14
Waraporn Saentaweesuk, Norie Araki, Kulthida Vaeteewoottacharn, Atit Silsirivanit, Wunchana Seubwai, Chutima Talabnin, Kanha Muisuk, Banchob Sripa, Sopit Wongkham, Seiji Okada, Chaisiri Wongkham
Cholangiocarcinoma (CCA) is a highly metastatic tumor, of which the majority of the patients have short survival due tono effective treatment. Hence, a better understanding regarding CCA metastasis may provide an opportunity to improve the strategies for treatment. A comparison study between the highly metastatic cells and their parental cells is an approach to uncover the molecular mechanisms underlying the metastatic process. In the present study, a lung metastatic CCA cell line, KKU-214L5 was established by the in vivo selection of the tail-vein injected mouse model...
July 25, 2017: Oncology Research
https://www.readbyqxmd.com/read/28762011/erratum-to-pro-apoptotic-effect-of-%C3%AE-2-tgz-in-claudin-1-low-triple-negative-breast-cancer-cells-involvement-of-claudin-1
#15
Marine Geoffroy, Alexandra Kleinclauss, Stéphanie Grandemange, Sébastien Hupont, Michel Boisbrun, Stéphane Flament, Isabelle Grillier-Vuissoz, Sandra Kuntz
No abstract text is available yet for this article.
July 31, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28761317/physical-disruption-of-cell-cell-contact-induces-vegf-expression-in-rpe-cells
#16
Farhad Farjood, Elizabeth Vargis
PURPOSE: To investigate the role of RPE cell-cell contact in vascular endothelial growth factor (VEGF) protein expression in cultures of primary human RPE (hRPE) cells and a human RPE cell line (ARPE-19). METHODS: Two in vitro methods, scratching and micropatterning, were used to control the physical dissociation of RPE cell-cell junctions. Scratching was performed by scoring monolayers of RPE cells with a cell scraper. Micropatterning was achieved by using a stencil patterning method...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28759954/prognostic-significance-of-the-genetic-and-the-immunohistochemical-expression-of-epithelial-mesenchymal-related-markers-in-colon-cancer
#17
Hayam E Rashed, Samia Hussein, Hala Mosaad, Mai M Abdelwahab, Mohamed I Abdelhamid, Salem Y Mohamed, Abdel Motaleb Mohamed, Alaa Fayed
BACKGROUND: Epithelial-mesenchymal transition (EMT) is one of the main events in colorectal cancer (CRC) spread. Snail-1 is a zinc transcription factor that mediates EMT in tumor cells probably by down-regulation of E-cadherin and claudin-1. OBJECTIVES: To detect the expression of epithelial markers (claudin-1 and E-cadherin) and mesenchymal markers (snail-1 and vimentin) in primary cancer colon. Also, to select stage II cancer patients of a high risk that can benefit from postoperative adjuvant chemotherapy...
July 19, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28757346/development-of-an-xbp1-agonist-hlj2-as-a-potential-therapeutic-agent-for-ulcerative-colitis
#18
HaiJing Zhang, ZhiHui Zhang, GuangMing Song, XiaoNan Tang, HuaChen Song, AnJun Deng, WenJie Wang, LianQiu Wu, Hailin Qin
There is a severe lack of effective treatments for ulcerative colitis (UC), a recurrent and intractable inflammatory bowel disease. The identification of valid targets and new drugs is an urgent need. In this study, we identified the XBP-1 agonist HLJ2 as a promising treatment candidate. In an in vivo mouse model of DSS-induced colitis, HLJ2 decreased weight loss, colon contracture, disease activity index (DAI), colon mucosa damage index (CMDI) and histopathological index (HI). HLJ2 also decreased myeloperoxidase (MPO) activity and reduced production of the inflammatory cytokines TNF-α, IL-1β, and IL-6...
July 28, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28753236/blood-spinal-cord-barrier-breakdown-and-pericyte-deficiency-in-peripheral-neuropathy
#19
Reine-Solange Sauer, Juliane Kirchner, Shaobing Yang, Liu Hu, Mathias Leinders, Claudia Sommer, Alexander Brack, Heike L Rittner
The blood-spinal cord barrier (BSCB) prevents leakage of molecules, such as pronociceptive mediators, into the spinal cord, but its role in the pathophysiology of neuropathic pain is not completely understood. Rats with chronic constriction injury (CCI) develop mechanical allodynia, thermal hypersensitivity, and reduced motor performance (Rota-Rod test) compared with sham-injured mice-similar to mice with spared nerve injury (SNI). The BSCB becomes permeable for small and large tracers 1 day after nerve ligation...
July 28, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28753223/biphasic-influence-of-staphylococcus-aureus-on-human-epidermal-tight-junctions
#20
Katja Bäsler, Marie-Florence Galliano, Sophia Bergmann, Holger Rohde, Ewa Wladykowski, Sabine Vidal-Y-Sy, Beatrice Guiraud, Pia Houdek, Germar Schüring, Thomas Volksdorf, Antony Caruana, Sandrine Bessou-Touya, Stefan W Schneider, Hélène Duplan, Johanna M Brandner
Bacterial infections (e.g., with Staphylococcus aureus) are serious problems in skin with a compromised barrier, such as in patients with atopic dermatitis. Previously, it was shown that tight junction (TJ) proteins are influenced by staphylococcal infection, and TJ function is impaired after infection of the keratinocyte cell line HaCaT. However, functional studies in cells or models more similar to human skin are missing. Therefore, we investigated bacterial colonialization and infection with live S. aureus in primary human keratinocytes and reconstructed human epidermis (RHE)...
July 28, 2017: Annals of the New York Academy of Sciences
keyword
keyword
116732
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"