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Record W954126004 · doi:10.11575/prism/27020

Muc2 Mucin Alters Intestinal Epithelial Barrier Function

2013· dissertation· en· W954126004 on OpenAlexfundno aff
Vanessa Kissoon‐Singh

Bibliographic record

VenuePRISM (University of Calgary) · 2013
Typedissertation
Languageen
FieldMedicine
TopicHelicobacter pylori-related gastroenterology studies
Canadian institutionsnot available
FundersCanadian Institutes of Health ResearchAlberta InnovatesCrohn's and Colitis Foundation of CanadaCrohn's and Colitis Foundation
KeywordsMucinBarrier functionMucin 2Function (biology)Cell biologyBiologyChemistryMedicinePathologyBiochemistryGeneGene expression

Abstract

fetched live from OpenAlex

Intestinal epithelial barrier function is critical to host protection against pathogens, and it is one of the first defence mechanisms affected in gastrointestinal disease. Barrier function is maintained by a three part system involving bacteria and host proteins in the intestinal lumen, the mucus layer and peptides embedded in it, and intestinal epithelial cells and tight junctions between them. Together these components act synergistically to maintain barrier function, and a change in any of these may result in increased permeability to pathogens and antigenic stimuli, and aberrant activation of immune cells. The intestinal mucus layer, at the centre of this system is critical to the proper functioning of all components. These studies illustrate that in the absence of an intact mucus layer, intestinal barrier function is compromised, disease susceptibility is increased and recovery following injury delayed. These studies also investigated whether or not susceptibility to dextran sulfate sodium induced colitis could be modulated with probiotics. In addition, the functional roles of an intact mucus layer in Entamoeba histolytica-induced acute inflammatory and permeability responses in the colon were examined. Probiotic therapy using VSL#3 was ineffective at limiting injury or accelerating colonic healing. The data presented here illustrate that Muc2-/- animals were highly susceptible to E. histolytica induced secretory responses through altered expression of various tight junction proteins. These findings unravel a novel role for MUC2 mucin in conferring both luminal and epithelial barrier functions critical in innate host defence against intestinal infection and wound healing.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.838
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.001
Insufficient payload (model declined to judge)0.0010.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.009
GPT teacher head0.211
Teacher spread0.201 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2013
Admission routes1
Has abstractyes

Explore more

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