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  1. Article ; Online: Pneumococcal Vaccination Recommendation and Completion Rates Among Patients With Inflammatory Bowel Disease and Barriers to Vaccination.

    Dasharathy, Sonya S / May, Folasade P / Myint, Anthony / Yang, Liu / Rahal, Harman K / Cusumano, Vivy / Kozan, Philip A / Lowe, Sarina C / Beah, Peter Y / Limketkai, Berkeley N / Sauk, Jenny S

    Journal of clinical gastroenterology

    2023  Volume 57, Issue 10, Page(s) 1031–1037

    Abstract: Background: Guidelines for inflammatory bowel disease (IBD) patients receiving immunosuppression encouraged both the pneumococcal polysaccharide vaccine (PPSV23) and the pneumococcal conjugate vaccine (PCV13). We aimed to evaluate which pneumococcal ... ...

    Abstract Background: Guidelines for inflammatory bowel disease (IBD) patients receiving immunosuppression encouraged both the pneumococcal polysaccharide vaccine (PPSV23) and the pneumococcal conjugate vaccine (PCV13). We aimed to evaluate which pneumococcal vaccines are recommended and administered, and to understand provider and IBD patient knowledge regarding pneumococcal vaccinations.
    Methods: We performed a retrospective, cross-sectional analysis of 357 adult IBD patients on immunosuppression in our health care system. Patient demographics and clinical characteristics were collected. The primary outcome was rate of documented vaccinations recommended by providers; the secondary outcome was rate of receipt of the vaccines. We identified factors associated with receipt of any pneumococcal vaccine through multivariable logistic regression. We also performed provider and IBD patient surveys to understand provider and patient knowledge regarding pneumococcal vaccines. We used χ 2 and Fisher exact tests to assess survey responses.
    Results: Fifty seven percent of IBD patients had any pneumococcal vaccination recommended and 35% had recommendations for both PPSV23 and PCV13. Forty percent received any pneumococcal vaccine and 18% received both vaccines. In multivariable analyses, increasing age (adjusted odds ratio: 1.03, 95% CI: 1.01-1.05) was associated with receipt of any pneumococcal vaccine, after adjusting for gender, race, insurance, disease activity, and time seen in our gastroenterology clinics. In the survey study, on average, 59% of providers correctly answered questions regarding pneumococcal vaccination indications.
    Conclusion: In our health care system, while recommendation for any pneumococcal vaccination was >50%, receipt of both PPSV23 and PCV13 was low. Simplified vaccine regimens (ie, PCV20) will likely improve vaccination rates.
    MeSH term(s) Adult ; Humans ; Retrospective Studies ; Cross-Sectional Studies ; Vaccination ; Pneumococcal Vaccines ; Inflammatory Bowel Diseases
    Chemical Substances Pneumococcal Vaccines
    Language English
    Publishing date 2023-01-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 448460-5
    ISSN 1539-2031 ; 0192-0790
    ISSN (online) 1539-2031
    ISSN 0192-0790
    DOI 10.1097/MCG.0000000000001783
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Enteroids expressing a disease-associated mutant of EpCAM are a model for congenital tufting enteropathy.

    Das, Barun / Okamoto, Kevin / Rabalais, John / Kozan, Philip A / Marchelletta, Ronald R / McGeough, Matthew D / Durali, Nassim / Go, Maria / Barrett, Kim E / Das, Soumita / Sivagnanam, Mamata

    American journal of physiology. Gastrointestinal and liver physiology

    2019  Volume 317, Issue 5, Page(s) G580–G591

    Abstract: Congenital tufting enteropathy (CTE) is an autosomal recessive disease characterized by severe intestinal failure in infancy and mutations in the epithelial cell adhesion molecule ( ...

    Abstract Congenital tufting enteropathy (CTE) is an autosomal recessive disease characterized by severe intestinal failure in infancy and mutations in the epithelial cell adhesion molecule (
    MeSH term(s) Animals ; Cell Differentiation ; Cell Proliferation ; Cells, Cultured ; Diarrhea, Infantile/genetics ; Diarrhea, Infantile/pathology ; Epithelial Cell Adhesion Molecule/genetics ; Epithelial Cell Adhesion Molecule/metabolism ; Female ; Goblet Cells/cytology ; Goblet Cells/metabolism ; Goblet Cells/physiology ; Intestinal Mucosa/cytology ; Intestinal Mucosa/metabolism ; Intestinal Mucosa/pathology ; Malabsorption Syndromes/genetics ; Malabsorption Syndromes/pathology ; Male ; Mice ; Mice, Inbred C57BL ; Paneth Cells/cytology ; Paneth Cells/metabolism ; Paneth Cells/physiology ; Tissue Culture Techniques/methods
    Chemical Substances Epithelial Cell Adhesion Molecule
    Language English
    Publishing date 2019-08-21
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 603840-2
    ISSN 1522-1547 ; 0193-1857
    ISSN (online) 1522-1547
    ISSN 0193-1857
    DOI 10.1152/ajpgi.00098.2019
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Mutation of EpCAM leads to intestinal barrier and ion transport dysfunction.

    Kozan, Philip A / McGeough, Matthew D / Peña, Carla A / Mueller, James L / Barrett, Kim E / Marchelletta, Ronald R / Sivagnanam, Mamata

    Journal of molecular medicine (Berlin, Germany)

    2014  Volume 93, Issue 5, Page(s) 535–545

    Abstract: Unlabelled: Congenital tufting enteropathy (CTE) is a devastating diarrheal disease seen in infancy that is typically associated with villous changes and the appearance of epithelial tufts. We previously found mutations in epithelial cell adhesion ... ...

    Abstract Unlabelled: Congenital tufting enteropathy (CTE) is a devastating diarrheal disease seen in infancy that is typically associated with villous changes and the appearance of epithelial tufts. We previously found mutations in epithelial cell adhesion molecule (EpCAM) to be causative in CTE. We developed a knock-down cell model of CTE through transfection of an EpCAM shRNA construct into T84 colonic epithelial cells to elucidate the in vitro role of EpCAM in barrier function and ion transport. Cells with EpCAM deficiency exhibited decreased electrical resistance, increased permeability, and decreased ion transport. Based on mutations in CTE patients, an in vivo mouse model was developed, with tamoxifen-inducible deletion of exon 4 in Epcam resulting in mutant protein with decreased expression. Tamoxifen treatment of Epcam (Δ4/Δ4) mice resulted in pathological features of villous atrophy and epithelial tufts, similar to those in human CTE patients, within 4 days post induction. Epcam (Δ4/Δ4) mice also showed decreased expression of tight junctional proteins, increased permeability, and decreased ion transport in the intestines. Taken together, these findings reveal mechanisms that may underlie disease in CTE.
    Key messages: Knock-down EpCAM cell model of congenital tufting enteropathy was developed. In vivo inducible mouse model was developed resulting in mutant EpCAM protein. Cells with EpCAM deficiency demonstrated barrier and ion transport dysfunction. Tamoxifen-treated Epcam (Δ4/Δ4) mice demonstrated pathological features. Epcam (Δ4/Δ4) mice showed improper barrier function and ion transport.
    MeSH term(s) Animals ; Antigens, Neoplasm/genetics ; Antigens, Neoplasm/metabolism ; Cell Adhesion Molecules/genetics ; Cell Adhesion Molecules/metabolism ; Cell Line ; Epithelial Cell Adhesion Molecule ; Gene Knockdown Techniques ; Intestinal Mucosa/metabolism ; Intestinal Mucosa/pathology ; Ion Transport ; Mice ; Mice, Knockout ; Mutation ; Permeability ; RNA Interference ; RNA, Small Interfering/genetics
    Chemical Substances Antigens, Neoplasm ; Cell Adhesion Molecules ; Epithelial Cell Adhesion Molecule ; RNA, Small Interfering
    Language English
    Publishing date 2014-12-09
    Publishing country Germany
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1223802-8
    ISSN 1432-1440 ; 0946-2716
    ISSN (online) 1432-1440
    ISSN 0946-2716
    DOI 10.1007/s00109-014-1239-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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