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https://www.readbyqxmd.com/read/28102757/dysbiosis-in-crohn-s-disease-joint-action-of-stochastic-injuries-and-focal-inflammation-in-the-gut
#1
Ludovica F Buttó, Dirk Haller
Gut homeostasis involves interrelated biological networks that include the immune system, specialized cells of the epithelium, such as Paneth and goblet cells, as well as triggers derived from the microbiota. Disruption of these homeostatic interactions may lead to the pathogenesis of inflammatory bowel diseases (IBD). To develop more targeted and individual treatments in Crohn's disease and ulcerative colitis, it becomes more and more important to link key mechanisms of the disease pathogenesis to distinct IBD subsets...
January 19, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28098247/c-jun-n-terminal-kinase-2-promotes-enterocyte-survival-and-goblet-cell-differentiation-in-the-inflamed-intestine
#2
A D Mandić, E Bennek, J Verdier, K Zhang, S Roubrocks, R J Davis, B Denecke, N Gassler, K Streetz, A Kel, M Hornef, F J Cubero, C Trautwein, G Sellge
c-Jun N-terminal kinases (JNKs) contribute to immune signaling but their functional role during intestinal mucosal inflammation has remained ill defined. Using genetic mouse models, we characterized the role of JNK1 and JNK2 during homeostasis and acute colitis. Epithelial apoptosis, regeneration, differentiation, and barrier function were analyzed in intestinal epithelium-specific (ΔIEC) or complete JNK1 and bone marrow chimeric or complete JNK2 deficient mice as well as double-knockout animals (JNK1(ΔIEC)JNK2(-/-)) during homeostasis and acute dextran sulfate sodium (DSS)-induced colitis...
January 18, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28097227/a-xenogeneic-free-system-generating-functional-human-gut-organoids-from-pluripotent-stem-cells
#3
Hajime Uchida, Masakazu Machida, Takumi Miura, Tomoyuki Kawasaki, Takuya Okazaki, Kengo Sasaki, Seisuke Sakamoto, Noriaki Ohuchi, Mureo Kasahara, Akihiro Umezawa, Hidenori Akutsu
Functional intestines are composed of cell types from all 3 primary germ layers and are generated through a highly orchestrated and serial developmental process. Directed differentiation of human pluripotent stem cells (hPSCs) has been shown to yield gut-specific cell types; however, these structures do not reproduce critical functional interactions between cell types of different germ layers. Here, we developed a simple protocol for the generation of mature functional intestinal organoids from hPSCs under xenogeneic-free conditions...
January 12, 2017: JCI Insight
https://www.readbyqxmd.com/read/28097040/effects-of-inhalable-microparticles-of-seonpyejeongcheon-tang-in-an-asthma-mouse-model-effects-of-microparticles-of-sjt
#4
Won-Kyung Yang, Chul-Hwa Lee, Min-Hee Kim, Seung-Hyeong Kim, Hae-Yoon Choi, Yoon Yeo, Yang-Chun Park
OBJECTIVES: Allergic asthma generally presents with symptoms of wheezing, coughing, breathlessness, and airway inflammation. Seonpyejeongcheon-tang (SJT) consists of 12 herbs. It originated from Jeongcheon-tang (JT), also known as Ding-chuan-tang, composed of 7 herbs, in She-sheng-zhong-miao-fang. This study aimed to evaluate the effects of local delivery of SJT via inhalable microparticles in an asthma mouse model. METHODS: Microparticles containing SJT were produced by spray-drying with leucine as an excipient...
December 2016: Journal of Pharmacopuncture
https://www.readbyqxmd.com/read/28093881/a-case-of-anaplastic-lymphoma-kinase-alk-positive-ciliated-muconodular-papillary-tumor-cmpt-of-the-lung
#5
Ryo Taguchi, Kayoko Higuchi, Motohiro Sudo, Kenji Misawa, Takashi Miyamoto, Osamu Mishima, Morihisa Kitano, Koji Azuhata, Nobuo Ito
Ciliated muconodular papillary tumor (CMPT) is a rare papillary tumor that arises in the peripheral lung fields and is associated with the proliferation of ciliate d and goblet cells and increased mucin production. We report a case of CMPT involving the rearrangement of the anaplastic lymphoma kinase (ALK) gene. The patient was an 84-year-old Japanese female who had exhibited a small nodular shadow on chest computed tomography during a regular checkup 10 years ago. She underwent a partial resection of segment S10 of the right lung...
January 17, 2017: Pathology International
https://www.readbyqxmd.com/read/28091781/a-semifluorinated-alkane-f4h5-as-novel-carrier-for-cyclosporine-a-a-promising-therapeutic-and-prophylactic-option-for-topical-treatment-of-dry-eye
#6
Uta Gehlsen, Tobias Braun, Maria Notara, Sonja Krösser, Philipp Steven
PURPOSE: Cyclosporine A (Cs) has been used as effective topical therapy for inflammatory dry eye disease since more than a decade. However, due to its lipophilic character, Cs is formulated as emulsions or oily solutions for topical application. This experimental study aimed to test if the use of semifluorinated alkanes (SFAs) as a preservative-free, well-tolerated non-stinging or burning vehicle maintains or even improves the benefits of Cs in the topical therapy of dry-eye disease. METHODS: Desiccating stress was applied to C57BL/6 mice for 14 consecutive days to induce experimental dry-eye...
January 14, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28077192/dietary-probiotic-supplementation-improves-growth-and-the-intestinal-morphology-of-nile-tilapia
#7
M A Ramos, S Batista, M A Pires, A P Silva, L F Pereira, M J Saavedra, R O A Ozório, P Rema
Probiotic administration can be a nutritional strategy to improve the immune response and growth performance of fish. The current study aimed to evaluate the effects of a probiotic blend (Bacillus sp., Pediococcus sp., Enterococcus sp., Lactobacillus sp.) as a dietary supplement on growth performance, feed utilization, innate immune and oxidative stress responses and intestinal morphology in juvenile Nile tilapia (Oreochromis niloticus). The probiotic was incorporated into a basal diet at three concentrations: 0 g/kg (A0: control), 3 g/kg (A1: 1...
January 12, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28070680/a-disturbance-of-intestinal-epithelial-cell-population-and-kinetics-in-apc1638t-mice
#8
Tuya Wang, Takanori Onouchi, Nami O Yamada, Shuji Matsuda, Takao Senda
The adenomatous polyposis coli (APC) is a multifunctional protein as well as a tumor suppressor. To determine the functions of the C-terminal domain of APC, we explored APC (1638T/1638T) (APC1638T) mice that express a truncated APC lacking the C-terminal domain. The APC1638T mice were tumor free and exhibited growth retardation. In the present study, we compared small intestinal crypt-villus cells homeostasis in APC (+/+) (WT) mice and APC1638T mice. The body weight of APC1638T mice was significantly smaller than that of WT mice at all ages...
January 9, 2017: Medical Molecular Morphology
https://www.readbyqxmd.com/read/28069814/muc2-mucin-and-butyrate-contribute-to-the-synthesis-of-the-antimicrobial-peptide-cathelicidin-in-response-to-e-histolytica-and-dss-induced-colitis
#9
Eduardo R Cobo, Vanessa Kissoon-Singh, France Moreau, Ravi Holani, Kris Chadee
Embedded in the colonic mucus are cathelicidins, small cationic peptides secreted by colonic epithelial cells. Humans and mice have one cathelicidin-related antimicrobial peptide (CRAMP), LL-37/hCAP-18 and Cramp respectively, with related structure and functions. Altered production of MUC2 mucin and antimicrobial peptides is characteristic of intestinal amebiasis. The interactions between MUC2 mucin and cathelicidins in conferring innate immunity against Entamoeba histolytica (Eh) are not well characterized...
January 9, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28063247/replacing-corn-with-sorghum-in-the-diet%C3%A2-alters-intestinal-microbiota-without-altering-chicken-performance
#10
N S Fagundes, R Pereira, C Bortoluzzi, J M Rafael, G S Napty, J G M Barbosa, M C M Sciencia, J F M Menten
Sorghum grain can be used to replace corn in broiler diets. However, the effects related to an abrupt change between these grains are not yet clear. The aim of this study was to evaluate the performance and intestinal health of broilers fed diets containing corn and/or sorghum during different periods of rearing. To accomplish this aim, 2100 male chicks were fed the following experimental diets: C100% (corn-based diet); S100% (sorghum-based diet); C:S50% (diet based on corn and sorghum 1:1); PC-S (corn-based diet in the pre-starter phase and sorghum-based diet in subsequent phases); and PS-C (sorghum-based diet in the pre-starter phase and corn-based diet in subsequent phases)...
January 7, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28062699/cathelicidin-wa-improves-intestinal-epithelial-barrier-function-and-enhances-host-defense-against-enterohemorrhagic-escherichia-coli-o157-h7-infection
#11
Hongbo Yi, Wangyang Hu, Shan Chen, Zeqing Lu, Yizhen Wang
Impaired epithelial barrier function disrupts immune homeostasis and increases inflammation in intestines, leading to many intestinal diseases. Cathelicidin peptides suppress intestinal inflammation and improve intestinal epithelial barrier function independently of their antimicrobial activity. In this study, we investigated the effects of Cathelicidin-WA (CWA) on intestinal epithelial barrier function, as well as the underlying mechanism, by using enterohemorrhagic Escherichia coli (EHEC)-infected mice and intestinal epithelial cells...
January 6, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28056984/the-main-rhinovirus-respiratory-tract-adhesion-site-icam-1-is-upregulated-in-smokers-and-patients-with-chronic-airflow-limitation-cal
#12
Shakti Dhar Shukla, Malik Quasir Mahmood, Steven Weston, Roger Latham, Hans Konrad Muller, Sukhwinder Singh Sohal, Eugene Haydn Walters
BACKGROUND: ICAM-1 is a major receptor for ~60% of human rhinoviruses, and non-typeable Haemophilus influenzae, two major pathogens in COPD. Increased cell-surface expression of ICAM-1 in response to tobacco smoke exposure has been suggested. We have investigated epithelial ICAM-1 expression in both the large and small airways, and lung parenchyma in smoking-related chronic airflow limitation (CAL) patients. METHODS: We evaluated epithelial ICAM-1 expression in resected lung tissue: 8 smokers with normal spirometry (NLFS); 29 CAL patients (10 small-airway disease; 9 COPD-smokers; 10 COPD ex-smokers); Controls (NC): 15 normal airway/lung tissues...
January 5, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28056550/co-inhalation-of-roflumilast-rather-than-formoterol-with-fluticasone-more-effectively-improves-asthma-in-asthmatic-mice
#13
Hussam A Murad, Hamed S Habib, Misbahuddin M Rafeeq, Mansour I Sulaiman, Amer S Abdulrahman, Mohamad Nidal Khabaz
Roflumilast is approved as an add-on therapy for chronic obstructive pulmonary disease. The inflammation in chronic obstructive pulmonary disease is mainly neutrophilic, while in asthma it is mainly eosinophilic, studies addressing role of roflumilast in eosinophilic inflammation are recommended. Also in severe asthma, the dominant inflammatory cells are neutrophils. Thus, roflumilast has a potential off-label use in the treatment of asthma. This study was designed to evaluate the effects of co-inhalation of roflumilast and fluticasone compared to that of formoterol and fluticasone in ovalbumin-sensitized and-challenged BALB/c mice...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28053617/characterization-the-response-of-korl-icr-mice-to-loperamide-induced-constipation
#14
Ji Eun Kim, Woo Bin Yun, Ji Eun Sung, Hyun Ah Lee, Jun Young Choi, Yeon Shik Choi, Young Suk Jung, Kil Soo Kim, Dae Youn Hwang
Animal models of constipation induced with drugs and diet have been widely employed to investigate therapeutic effects and the action mechanism of drugs against this disease. ICR mice were selected to produce this disease model through oral administration of loperamide (Lop), even though SD rats are commonly utilized in studies of constipation. To compare the responses of ICR mice obtained from three different sources to constipation inducers, alterations in stool number, histopathological structure, mucin secretion and opioid-receptor downstream signaling pathway were measured in Korl:ICR (Korea FDA source), A:ICR (USA source) and B:ICR (Japan source) injected with low and high concentrations of Lop (LoLop and HiLop)...
December 2016: Laboratory Animal Research
https://www.readbyqxmd.com/read/28053515/gender-differences-in-the-t-cell-profiles-of-the-airways-in-copd-patients-associated-with-clinical-phenotypes
#15
Helena Forsslund, Mingxing Yang, Mikael Mikko, Reza Karimi, Sven Nyrén, Benita Engvall, Johan Grunewald, Heta Merikallio, Riitta Kaarteenaho, Jan Wahlström, Åsa M Wheelock, C Magnus Sköld
T lymphocytes are believed to play an important role in the pathogenesis of chronic obstructive pulmonary disease (COPD). How T cells are recruited to the lungs and contribute to the inflammatory process is largely unknown. COPD is a heterogeneous disease, and discriminating disease phenotypes based on distinct molecular and cellular pathways may provide new approaches for individualized diagnosis and therapies. Bronchoalveolar lavage (BAL) and blood samples were obtained from 40 never-smokers, 40 smokers with normal lung function, and 38 COPD patients...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28052409/effects-of-dietary-inclusion-of-silymarin-on-performance-intestinal-morphology-and-ileal-bacterial-count-in-aflatoxin-challenged-broiler-chicks
#16
E Jahanian, A H Mahdavi, S Asgary, R Jahanian
This study was conducted to investigate the effect of dietary supplementation of silymarin on performance, jejunal morphology and ileal bacterial population in broiler chicks intoxicated with a mix of aflatoxins. A total of three hundred thirty six 7-day-old Ross broiler chicks were randomly distributed between seven experimental groups with four replicates of 12 birds each. Experimental treatments consisted of a control group (unchallenged), and a 2 × 3 factorial arrangement, including two aflatoxin levels (0...
January 4, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28052300/transmembrane-mucins-signaling-receptors-at-the-intersection-of-inflammation-and-cancer
#17
Jos P M van Putten, Karin Strijbis
Mucosal surfaces line our body cavities and provide the interaction surface between commensal and pathogenic microbiota and the host. The barrier function of the mucosal layer is largely maintained by gel-forming mucin proteins that are secreted by goblet cells. In addition, mucosal epithelial cells express cell-bound mucins that have both barrier and signaling functions. The family of transmembrane mucins consists of diverse members that share a few characteristics. The highly glycosylated extracellular mucin domains inhibit invasion by pathogenic bacteria and can form a tight mesh structure that protects cells in harmful conditions...
January 5, 2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/28049205/bufalin-inhibits-the-inflammatory-effects-in-asthmatic-mice-through-the-suppression-of-nuclear-factor-kappa-b-activity
#18
Zibierguli Zhakeer, Maierbati Hadeer, Zumulaiti Tuerxun, Kelibiena Tuerxun
Asthma is an inflammatory airway disease characterized by increased infiltration of inflammatory cells into the airways and poor respiratory function. Bufalin is one of the biological ingredients obtained from Chansu. Bufalin was found to possess various pharmacological properties including anti-inflammatory activities. However, the effect of bufalin treatment on asthma has not yet been reported. Therefore, this study aimed to investigate the inhibitory effect of bufalin on asthmatic response in a murine model...
January 4, 2017: Pharmacology
https://www.readbyqxmd.com/read/28045589/dietary-selenium-protects-adiponectin-knockout-mice-against-chronic-inflammation-induced-colon-cancer
#19
Arpit Saxena, Raja Fayad, Kamaljeet Kaur, Samantha Truman, Julian Greer, James A Carson, Anindya Chanda
Selenium (Se) is an essential dietary micronutrient that has been examined for protection against different types of cancers including colon cancer. Despite an established inverse association between Se and chronic inflammation induced colon cancer (CICC), the mechanistic understanding of Se's protective effects requires additional in-vivo studies using preclinical animal models of CICC. Adiponectin (APN) is an adipocytokine that is protective against CICC as well. However, its role in the anti-mutagenic effects of the Se-diet remains unknown...
January 3, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/28044215/mixed-effects-of-caffeic-acid-phenethyl-ester-cape-on-joint-inflammation-bone-loss-and-gastrointestinal-inflammation-in-a-murine-model-of-collagen-antibody-induced-arthritis
#20
Bonnie Williams, Eleni Tsangari, Romany Stansborough, Victor Marino, Melissa Cantley, Anak Dharmapatni, Rachel Gibson, Egon Perilli, Tania Crotti
OBJECTIVE: To investigate the effect of caffeic acid phenethyl ester (CAPE) on local and systemic inflammation and bone loss in collagen antibody-induced arthritis (CAIA) mice. METHODS: Four groups of mice (n = 8 per group) were allocated; control, CAPE (1 mg/kg), CAIA and CAIA + CAPE (1 mg/kg). Local inflammation and bone loss were evaluated using clinical paw scores, in vivo micro-computed tomography (micro-CT), histological assessment and tartrate-resistant acid phosphatase (TRAP) staining...
January 3, 2017: Inflammopharmacology
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