Related Experiment Video
Updated: Sep 6, 2025
08:40
Chronic Salmonella Infection Induced Intestinal Fibrosis
Published on: September 22, 2019
7.2K
Causal Association Between Inflammatory Bowel Disease and Psoriasis: A Two-Sample Bidirectional Mendelian
Yajia Li1,2, Jia Guo1,2, Ziqin Cao2,3
1Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.
Frontiers in Immunology
|June 27, 2022
Summary
This study found a causal link between inflammatory bowel disease (IBD) and psoriasis, particularly psoriatic arthritis. Genetic predisposition to IBD increases psoriasis risk, aiding clinical management.
Area of Science:
- Genetics
- Immunology
- Dermatology
Background:
- Observational studies suggest an association between inflammatory bowel disease (IBD) and psoriasis.
- The causal relationship between these conditions requires further investigation.
Purpose of the Study:
- To determine the causal association between IBD and psoriasis using a Mendelian randomization (MR) approach.
- To investigate the bidirectional causal relationship between IBD subtypes (Crohn's disease, ulcerative colitis) and psoriasis, including psoriatic arthritis.
Main Methods:
- A two-sample MR analysis was conducted using genome-wide association study (GWAS) data.
- Genetic instruments for IBD (25,042 cases, 34,915 controls) and psoriasis (4,510 cases, 212,242 controls) were utilized.
- Causal estimates were presented as odds ratios (ORs) with 95% confidence intervals (CIs).
Main Results:
- Genetic predisposition to IBD was associated with an increased risk of psoriasis (OR: 1.1271).
- Psoriatic arthritis showed a significant association with IBD (OR: 1.1202) and Crohn's disease (CD) (OR: 1.1407).
- Psoriasis was associated with CD (OR: 1.2224) but not ulcerative colitis (UC).
Conclusions:
- A causal relationship exists between IBD and psoriasis, particularly psoriatic arthritis.
- Specific types of IBD and psoriasis act as mutual risk factors.
- Understanding these links can improve clinical management of both conditions.
Related Concept Videos
01:30Inflammatory Bowel Disease II: Crohn's Disease
370
Introduction
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by...
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by...
370
01:11Genome-wide Association Studies-GWAS
14.1K
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
14.1K
01:17Chronic Bowel Disorders: Introduction
535
Chronic bowel diseases are a group of long-term conditions affecting the digestive tract, characterized by inflammation and damage to the gut lining. These conditions primarily include irritable bowel syndrome and inflammatory bowel disease.
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
535
01:27Inflammatory Bowel Disease I: Ulcerative Colitis
306
Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
306
01:30Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
403
Various diagnostic tests are employed in the diagnostic process for Inflammatory Bowel Disease (IBD), particularly to differentiate between Crohn's disease and ulcerative colitis.
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
403
01:35Pedigree Analysis
85.0K
Overview
85.0K