Ulcerative colitis (UC) is a colonic disease characterized by chronic inflammation. Rheumatoid arthritis (RA) is a rheumatological chronic inflammatory disease characterized by joint swelling and tenderness. It is also considered an autoimmune disorder. We want to discover if a link exists between UC and RA and if so, how UC affects the progress of arthritis.
We used PRISMA guidelines. In this study, we used PubMed, PubMed Central (PMC), and Google Scholar to collect data. Studies conducted more than 50 years ago, non-English articles, and animal studies were excluded. All types of studies were included. We used keywords like "ulcerative colitis", "rheumatoid arthritis", or "colitic arthritis" in the search.
We identified the following sets of results: 187,611 PubMed studies, 197,610 PMC studies, and 2,282,000 Google scholar studies. After applying inclusion and exclusion criteria, the number of appropriate studies was narrowed down to 50.
Arthritis is the most common complication of ulcerative UC. The radiological changes are similar to those seen in RA. There are common genes and antigens found in both diseases, such as human leukocyte antigen (HLA-B27), interleukin 15, IgA. Certain drugs used for the treatment of both disorders, including omega-3. Many studies revealed that a large number of patients with UC developed RA within a few years.
All the findings prove that there is a relation between ulcerative colitis and rheumatoid arthritis. This study is useful for doctors, scientists, and patients.
Introduction & Background
“As with many life-altering events, an autoimmune illness is almost guaranteed to cause you to re-evaluate your priorities.” -Joan Friedlander
Ulcerative colitis (UC) is an immune disorder of the colon characterized by chronic inflammation. The cause of the immune response is unclear, but genetic, dietary, and environmental risk factors all play a role .
In contrast with that of Crohn's disease (CD), the inflammation of ulcerative colitis is limited to the mucosa of the colon. The annual incidence of UC in the United States (US) is between nine and twelve cases per 100,000 persons . Inflammatory bowel diseases are more common in industrialized countries and Western nations. The incidence levels also increased in persons who live at higher latitudes. Smokers and patients who have had an appendectomy are less likely to develop ulcerative colitis. The incidence of UC is equal between women and men, in contrast to CD, which has a higher incidence in women. UC often presents with abdominal pain, hematochezia, and diarrhea . The onset of these symptoms may occur suddenly or gradually. About one-third of patients with UC have extraintestinal manifestations, with the most common one being arthritis (21% ).
Rheumatoid arthritis (RA) is a rheumatological chronic inflammatory disease characterized by joint swelling, joint tenderness, and the destruction of these synovial joints, leading to severe disability . It is considered an autoimmune disease. RA is regarded as the most commonly diagnosed form of arthritis: inflammatory arthritis. The etiology of RA is multifactorial. Genetic susceptibility is evident in monozygotic twin and familial clustering studies, with a 50 percent risk of RA attributable to genetic factors. A study in the UK found that the population minimum prevalence of RA is 0.44% in men and 1.16% in women . Patients with RA typically present with stiffness and pain in multiple joints. Respectively the wrists, proximal interphalangeal joints, and metacarpophalangeal joints are most commonly involved, and if the morning stiffness lasts more than one hour, it suggests an inflammatory etiology. It may present with boggy swelling due to synovitis . Patients may also present with more indolent arthralgia before the onset of clinically apparent joint swelling. Systemic symptoms of weight loss, fatigue, and low-grade fever may occur with active disease .
Both UC and RA involve an immune response that is inappropriate or excessive. These autoimmune diseases can be caused or accompanied by a systemic disruption that may result in acute or chronic injury, sometimes severe, in any organ system. They have common inflammatory pathways; patients with one condition have a higher risk of having another of these diseases relative to the rest of the population. Individually, these autoimmune diseases are rare.
However, is there a relation or link between UC and RA? How can a patient with UC subsequently develop RA? How does ulcerative colitis affect the progress, prevalence, symptoms, and signs of RA? The answer to all these questions will create a clearer and fuller picture of UC and RA. It will improve the treatment of these cases, limit the appearance of arthritis in the colitic patient, and prevent the complications associated with these diseases.
This study aims to discover the link between these two diseases and how ulcerative colitis affects the progress of RA. We used the US National Library of Medicine (PubMed), PubMed Central (PMC), and Google Scholar to access appropriate data. This review presents the assimilated information from several articles, reviews, case reports, case studies, cohort studies, and clinical trials.
We followed the PRISMA guidelines for data collection and presentation in this study.
Search Strategy and Study Selection
The search strategy was designed and executed using data obtained from PubMed, PMC, and Google Scholar to identify the link between UC and RA. The search query employed both a list of keywords and index terminology including: "ulcerative colitis", “rheumatoid arthritis” and “colitic arthritis." We excluded animal studies and articles published more than 50 years ago. We included all types of studies published in English, including systemic reviews, clinical trials, case reports, and traditional reviews. In the study, we did not specify a particular country but included all countries worldwide. We included all full-text studies and abstracts with information about the link between UC and RA.
Role of the Funding Source
The funder of the search had no role in the study design, data collection, data interpretation, data analysis, or writing any of the reports. All the studies and the data of the search were collected legally. The author had full access to all data in the study; the corresponding author had the final responsibilities for the decision to submit for publication.
The results for our methods and the inclusion and exclusion criteria are shown in Figure 1.
UC and RA involve an immune response. These autoimmune diseases can be caused, presented, or accompanied by the systemic disruption that may result in acute or chronic inflammatory injury. However, is there a relation or link between UC and RA? How does RA develop in a patient with UC? We will discuss how UC affects the progress, the prevalence, the symptoms, and signs of RA.
The Characteristics of Arthritis in Ulcerative Colitis
Arthritis is the most common complication of UC [3,4]. The rheumatologic complications of UC may produce higher morbidity than the underlying intestinal disease . Three studies describe the characteristics of arthritis [6-8]. Two studies characterized it as recurrent, earlier onset, and with acute asymmetrical involvement; usually monoarticular, the attacks were of short duration and accompanied with little residual deformity or disability [6,7]. The study by Wright and Watkinson is better as it contains several patients and has more references . The third study suggested that peripheral arthritis might change from acute and nondestructive to chronic and destructive in some cases . Sometimes there is an effusion in the affected joints, but the aspiration is sterile . However, the serological test for the rheumatoid factor, which is always positive in RA, is negative [4,9].
Gravallese and Kantrowitz divided the rheumatological conditions associated with inflammatory bowel disease into four categories . First, a unique form of peripheral arthritis which occurs in 15-20% of patients and is the self-limited, nondeforming, and seronegative type that waxes and wanes with bowel flares. Second, spondylitis which occurs in 3-6% of patients and is clinically and radiographically similar to idiopathic ankylosing spondylitis. Third, a bilateral, symmetrical sacroiliitis which occurs in 4-18% of patients. Fourth, a category that includes the rheumatologic complications of inflammatory bowel disease like clubbing, vasculitis, osteoporosis, and septic arthritis .
Also, the radiological changes are similar to those seen in RA . One study reported that 18 patients of 22 patients with UC have specific radiological osseous abnormalities . The computed tomography (CT) shows better sensitivity than x-ray analysis and can detect the changes of early sacroiliitis before they became apparent on plain films: bilateral, symmetrical joint narrowing with osseous erosion and then sclerosis [12,13].
As previously mentioned, the arthritis is pauciarticular. Arthritis begins in the lower limb and the most frequently affected joints are knees, ankles, hips, and elbows, while the finger-joints are less commonly attacked [6,14-16].
There is a positive association between arthritis and UC in the duration and extent of symptoms as arthritis usually subsides with the remission of UC, especially after a colectomy and exacerbations of arthritis [3,6,17].
In another three studies, each one gave a case report with a long history of RA, which was followed by the association of UC, based on endoscopic and histological findings. However, the underlying mechanism was unknown [18-20].
Genetics and Antigens
The relationship between UC and RA has not yet become clear. Perhaps specific genes may predispose to both diseases; however; no genetic risk factor has been identified .
Some studies suggested that UC and RA are both associated with the human leukocyte antigen (HLA-B27) . Klausen et al. reported a patient with both UC and RA who had a positive association with HLA-B27 . Scarpa et al. studied 79 patients with UC and found a higher prevalence of HLA-B27 (p <0.05) . Núñez et al. indicated that the development of articular manifestations in patients with ulcerative colitis was influenced by genetic factors in the major histocompatibility complex haplotypes . However, while Scarpa et al. and Núñez et al. make the same points, the latter is better as it contains a greater number of patients and is more recent [24,25].
In a 2001 study, Mosquera-Marinez et al. state that interleukin 15 is overexpressed in the inflamed mucosa of patients with inflammatory bowel disease at the level of macrophages. Also, the study reported that interleukin 15 was present in patients with RA .
In 1988, Cooper et al. performed a study to measure the serum titers of IgA in many inflammatory diseases, revealing that the levels are increased in RA and UC .
Chen at al. in their 2008 study “Haplotypes of PADI4 susceptible to RA are also associated with UC in the Japanese population” studied the haplotypes of peptidyl arginine deiminase type 4 (PADI4) in 114 patients with UC. The results showed that haplotype 2 of (PADI4) is susceptible to UC. Also, the study indicated that the haplotypes of PADI4 are the RA-susceptible gene .
Perdigones performed a study in 2010, on the regulatory element of the prostaglandin receptor ER4 on 662 UC patients and 605 RA patients. The prostaglandin receptor ER4 is associated with UC. The result of this study discovered that there is a significant influence between these polymorphisms and UC and RA predisposition .
Effect of Certain Drugs on Ulcerative Colitis and Rheumatoid Arthritis
Many drugs are used for the treatment of both UC and RA. One of these drugs is corticosteroid, which reduces colonic inflammation and reduces the incidence of RA [9,30].
Asada et al. discussed the effect of the therapeutic agents of RA on patients with UC . Some of these drugs did not induce colitis, although gold salts induced a form of colitis resembling UC. At the end of this study, they reported that the therapeutic medications for RA are unlikely to be the underlying cause of colitis .
Ruggiero et al.’s 2009 study reported that the omega-3 polyunsaturated fatty acid (PUFA) in large doses affects patients with UC and RA. Omega-3 (PUFA) is beneficial in inflammatory diseases by reducing pain, the number of tender joints, and the duration of stiffness .
In 2016, Szeto et al. showed that tocilizumab is an interleukin-6 receptor inhibitor for moderate and severe rheumatoid arthritis, and they used it for patients with RA and UC. They found clinical improvement in both diseases, and the laboratory studies supported the role of interleukin-6 in the pathophysiology of ulcerative colitis .
So, we conclude that there is a group of drugs which can be used in the treatment of either UC or RA. Some of these drugs are used as therapeutic agents for patients who simultaneously have both diseases, and this proves that there is a link or relation between UC and RA.
Coexistence of Rheumatoid Arthritis and Ulcerative Colitis
We studied 15 studies which included data on the number of patients with both UC and RA and collated the data in Table 1 below.
Two studies assessed the risk of RA in patients with UC. The first study (Weng et al.) said that the risk of RA was 1.9 (95% CI: 1.5-2.3) but the second study (Cohen et al.) said that it was 2.1 (1.8-2.3) [39,40]. The first study seems more accurate as it included more patients (12,601) and was performed over a longer period (1996-2005); the second study was conducted from 2001 to 2002.
Yüksel et al. enrolled 357 patients with inflammatory bowel disease (IBD) in their research and showed that 66 patients (18.5%) had IBD-related peripheral arthritis (13.5% ulcerative colitis) and the most common places were the knee (65.2%) and ankle (62.1%) .
In the study by Zippi et al., 595 patients with UC were enrolled, and the results showed that 168 patients had musculoskeletal manifestations, which included 61 with arthritis type 1 and 100 with arthritis type 2 .
Finally, two other studies revealed the odd's ratio of the presence of RA with UC. Wilson et al. reported an odd's ratio of 1.9 (95% CI: 1.5-2.3) . Bae et al. included 28,197 patients with UC, collected data from 2009 to 2013, and reported an increased risk of RA (OR: 3.474, 95% CI: 2.671-4.519) .
These two studies provided further evidence that there is a relation between UC and RA [45,46]. Each one carried a case report about a patient with UC, and then these cases were complicated by arthritis that resembles that clinical picture of RA [45,46].
Studies Disagreeing on the Relation between Rheumatoid Arthritis and Ulcerative Colitis
On the other side, some studies disagree with the presence of the relationship between the two diseases. Hammer et al. noted that the polyarthritis of patients with UC is different in many aspects from that of RA . McEwen showed that arthritis connected with UC differs from that of RA in being acute in onset, involving few joints and recovering without residual changes . Finally, Teleuolova et al. showed that the combination of UC and RA is rare . However, the number of studies which disagree with this study’s proposal is tiny against the number of studies that prove that there is a relation between the two diseases.
The limitations of this study are that this study is a traditional review, not a systematic review, and we did not include studies outside English-language. We recommend that future studies will focus on this relationship and discovering how both diseases affect each other. We also recommend that future studies be based on clinical trials or case reports as there is currently only a small number of these studies.
We aimed to find the relationship between UC and RA and how they affect each other. This review discusses the characteristics of arthritis in patients with UC, which resemble that of RA. We also collected data on the number of patients that have both conditions from many studies. All these findings provide sufficient evidence that there is a relation between the two diseases. This study is beneficial as it reviews data collected from the last 50 years from different databases, including all cases that have both diseases. It will help scientists and doctors to understand individual and shared elements of both disorders better.
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Relationship between Ulcerative Colitis and Rheumatoid Arthritis: A Review
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Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work.
Cite this article as:
Attalla M G, Singh S B, Khalid R, et al. (September 18, 2019) Relationship between Ulcerative Colitis and Rheumatoid Arthritis: A Review. Cureus 11(9): e5695. doi:10.7759/cureus.5695
Received by Cureus: July 07, 2019
Peer review began: August 27, 2019
Peer review concluded: August 30, 2019
Published: September 18, 2019
© Copyright 2019
Attalla et al. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 3.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.