| 1. |
- Pihl Lesnovska, Katarina, et al.
(författare)
-
The Process of Developing a Disease Activity Index in Microscopic Colitis
- 2022
-
Ingår i: Journal of Crohn's & Colitis. - Oxford, United Kingdom : Oxford University Press. - 1873-9946 .- 1876-4479. ; 16:3, s. 452-459
-
Tidskriftsartikel (refereegranskat)abstract
- Background and Aims: Patient-reported outcome measures [PROMs] aim to measure patients perception of how their disorder influences everyday functioning. The objective of this study was to develop a PROM to assess disease activity in microscopic colitis [MC] fulfilling the requirements of the Food and Drug Administration [FDA].Methods: The European Microscopic Colitis Activity Index [E-MCAT] was developed in four steps. [1] A list of symptoms associated with active MC was created by a group of experts in the field. [2] Content validity of the symptoms was performed by experts [n= 14] and patients [n = 79] using the Content Validity Index. [3] Questions and response alternatives were created for each symptom, and validity of the E-MCAI was evaluated with cognitive interviews with patients [n= 7] and by the experts. [4] A pilot postal survey was performed to ensure usability.Results: Seven of the symptoms related to active MC fulfilled the criteria for content validity and were included in the E-MCAI: stool consistency, stool frequency, stools at night, feel a need to pass more stools shortly after a bowel movement, urgent need to empty the bowel, leakage of stool and abdominal pain.The development and validation process resulted in the current version of the E-MCAI consisting of six questions related to MC. Conclusions: The E-MCAI was developed using the methods advocated by the FDA.The evaluation indicates good content validity. Further evaluation will be performed to achieve construct validity, reliability and responsiveness in future cross-sectional and longitudinal studies.
|
|
| 2. |
- Zabana, Yamile, et al.
(författare)
-
Pathogenesis Of Microscopic Colitis : A Systematic Review
- 2022
-
Ingår i: Journal of Crohn's & Colitis. - Oxford, United Kingdom : Elsevier. - 1873-9946 .- 1876-4479. ; 16:1, s. 143-161
-
Forskningsöversikt (refereegranskat)abstract
- Background: Whereas the exact aetiology of microscopic colitis [MC] remains unknown, a dysregulated immune response to luminal factors or medications is the most accepted pathogenesis hypothesis.Methods: We conducted a systematic review of the pathogenesis of MC. We applied the Joanna Briggs Institute methodologies and the PRISMA statement for the reporting of systematic reviews [PROSPERO Trial Identifier: CRD42020145008]. Populations, Exposure of interest, and Outcome [PEO] questions were used to explore the following topics in MC: 1] intestinal luminal factors; 2] autoimmunity; 3] innate immunity; 4] adaptive immunity; 5] extracellular matrix; 6] genetic risk factors; and 7] mechanism of diarrhoea. A search was done in PubMed, Embase, and Web of Science up to February 2020. A narrative description was performed explaining the findings for each aspect of MC aetiopathogenesis.Results: Thirty-eight documents provided evidence for PEO1, 100 for PEO2, 72 for PEO3 and 4, 38 for PEO5, 20 for PEO6, and 23 for PEO7. The majority of documents were cohorts, case reports, and case series, with a few case-control and some experimental studies. Consistency among data provided by different studies was considered to support pathogenetic hypotheses. MC is a multifactorial disease believed to involve innate and adaptive immune responses to luminal factors, genetic risk, autoimmunity, and extracellular matrix alterations, all contributing by varied mechanisms to watery diarrhoea.Conclusions: This is the first systematic review on the aetiology of MC supporting the notion that MC is a multifactorial disease. However, high-profile studies are lacking, and most evidence derives from small heterogeneous studies.
|
|
