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World J Gastroenterol. May 28, 2009; 15(20): 2469-2471
Published online May 28, 2009. doi: 10.3748/wjg.15.2469
Combined therapeutic approach: Inflammatory bowel diseases and peripheral or axial arthritis
Fabiola Atzeni, Sandro Ardizzone, Luca Bertani, Marco Antivalle, Alberto Batticciotto, Piercarlo Sarzi-Puttini
Fabiola Atzeni, Luca Bertani, Marco Antivalle, Alberto Batticciotto, Piercarlo Sarzi-Puttini, Rheumatology Unit, L. Sacco University Hospital, Milan 20127, Italy
Sandro Ardizzone, Gastroenterology Unit, L. Sacco University Hospital, Milan 20127, Italy
Author contributions: Atzeni F wrote the paper and designed research; Ardizzone S wrote the paper; Bertani L and Antivalle M analyzed the data and performed research; Batticciotto A performed research; Sarzi-Puttini P revised the paper.
Correspondence to: Piercarlo Sarzi-Puttini, MD, Director, Rheumatology Unit, L. Sacco University Hospital, Milano 20127, Italy. atzenifabiola@hotmail.com
Telephone: +39-23-9042208
Fax: +39-23-9043454
Received: February 2, 2009
Revised: April 8, 2009
Accepted: April 15, 2009
Published online: May 28, 2009

Abstract

Inflammatory bowel diseases (IBDs), particularly Crohn’s disease (CD) and ulcerative colitis (UC), are associated with a variety of extra-intestinal manifestations (EIMs). About 36% of IBD patients have at least one EIM, which most frequently affect the joints, skin, eyes and the biliary tract. The EIMs associated with IBD have a negative impact on patients with UC and CD, and the resolution of most of them parallels that of the active IBD in terms of timing and required therapy; however, the clinical course of EIMs such as axial arthritis, pyoderma gangrenosum, uveitis, and primary sclerosing cholangitis is independent of IBD activity. The peripheral and axial arthritis associated with IBD have traditionally been treated with simple analgesics, non-steroidal anti-inflammatory drugs, steroids, sulfasalazine, methotrexate, local steroid injections and physiotherapy, but the introduction of biological response modifiers such as tumor necrosis factor-α blockers, has led to further improvements.

Key Words: Anti-tumor necrosis factor antagonists, Inflammatory bowel disease, Treatment, Arthropathies



INTRODUCTION

Inflammatory bowel diseases (IBD), particularly Crohn’s disease (CD) and ulcerative colitis (UC), are associated with a variety of extra-intestinal manifestations (EIMs)[1]. About 36% of IBD patients have at least one EIM[2], and these have a negative impact on UC and CD patients. The most frequent EIMs affect the joints, skin, eyes and the biliary tract[3], but others give rise to small bowel dysfunctions (cholelithiasis, nephrolithiasis and obstructive uropathy) or are non-specific disorders (osteoporosis, hepatobiliary disease and amyloidosis)[12]. Although the association between EIMs and IBD has long been recognized, the underlying pathogenetic factors remain unclear. The reported incidence of peripheral and axial arthropathies ranges from 4% to 23%[45].

The Oxford group distinguished two types of peripheral arthropathy on the basis of their articular involvement[4]: (1) Type I is a large joint pauci-articular arthropathy that mainly affects the ankles, knees, hips, wrists, elbows and shoulders; is usually acute and self-limiting; occurs at times of IBD activity; and leaves no permanent joint damage. (2) Type II is a polyarticular arthropathy that mainly affects the small joints of both hands symmetrically; is characterised by pain that usually persists for months or years; and is largely independent of IBD activity.

Axial arthritis includes sacroiliitis and ankylosing spondylitis (AS)[5]: (1) Sacroiilitis may be asymptomatic or symptomatic[6]; asymptomatic sacroiilitis is common and up to 50% of CD patients show abnormal radiographic findings; symptomatic sacroiliitis is characterised by pain in the pelvis after rest, which improves with movement, and discomfort in the sacroiliac joints during bilateral pressure on the pelvic brim. (2) AS is characterised by persistent low back pain beginning before the age of 30 years, and its clinical diagnosis is supported by characteristic radiological changes for which magnetic resonance imaging is the diagnostic tool of choice[78]. Although HLA B-27 is over-represented in IBD-related axial arthritis, it is of no diagnostic value[9].

THERAPEUTIC APPROACHES TO IBD AND ARTHROPATHIES

The treatment of IBD-associated arthropathies is almost entirely based on extrapolations from other forms of arthritis.

In the case of type I peripheral arthritis, treatment should concentrate on the active disease and include steroids, immunomodulators and anti-tumor necrosis factor-α (TNF-α)[1012]; however, all forms of IBD-related arthritis seem to be treated with sulfasalazine (SSZ) despite the lack of supportive evidence[13]. The symptoms can be relieved using simple analgesics, rest and physiotherapy. Non-steroidal anti-inflammatory drugs may aggravate the underlying colitis[14], but the findings of a randomised study regarding the safety of celecoxib[15] indicate that its short-term use (< 2 wk) does not exacerbate colitis. A local steroid injection into the affected joints provides rapid but only temporary relief.

The treatment of AS should include intensive physiotherapy, together with the administration of disease-modifying drugs such as SSZ and methotrexate. However, since TNF-α has been shown to play a key role in the pathogenesis of AS and IBD, the treatment of this manifestation has changed[16].

The advent of biological response modifiers such as TNF-α blockers has improved the treatment of IBD and its associated peripheral and axial arthritides, and their safety and efficacy have been clearly established in the case of AS-related peripheral arthritis. IBD patients failing on immunomodulation therapy used to be recommended surgery, but are now treated with biological agents.

Table 1 lists the currently used treatments for IBD-related arthropathies.

Table 1 Therapy of spondyloarthropathies.
Therapy
Standard initial therapyNSAIDs and anti-COX-2
Physical activity
Local steroids
Second line therapySulfasalazine
Methotrexate
Gold
Others (penicillamine, etc)
Biological therapies (TNFα-blockers)Infliximab
Etanercept
Onercept
Adalimumab
Thalidomide
Anti-TNF antagonists

Infliximab is a chimeric IgG1 monoclonal antibody to TNF and represents a significant advance in the treatment of IBD with or without associated arthropathies[17]. There are anecdotal accounts of infliximab rapidly improving peripheral arthritis in IBD patients. Ellman et al[18] have reported the findings of an open-label study in which four patients with treatment-refractory peripheral arthritis responded to treatment with infliximab 5 mg/kg and, subsequently, a large-scale prospective, open-label trial demonstrated an improvement in peripheral arthritis in IBD patients who had previously been refractory to corticosteroids, 6-mercaptopurine, azathioprine or methotrexate[19]. Another small open-label study documented an improvement in the arthralgias of seven out of 11 IBD patients after a single infusion of infliximab 5 mg/kg[20].

On the basis of the available data, it seems that most IBD patients with active intestinal inflammation and concurrent peripheral arthritis are likely to experience an improvement in their joint symptoms upon receiving infliximab.

Adalimumab is a subcutaneously self-administered fully human monoclonal antibody against TNF-α that is efficacious in inducing and maintaining remission in patients with moderate-to-severe CD[21], but there are no published data concerning its efficacy in patients with concomitant IBD and arthritis.

Infliximab, etanercept and adalimumab have all been found to have positive short- and long-term effects on disease signs and symptoms in AS patients[2223]. Braun et al[24] analysed the data from nine trials of anti-TNF agents (seven placebo-controlled and two open-label studies) and found that the treatment is efficacious in treating AS and IBD, and that the onset and flare of IBD are infrequent events in AS patients receiving anti-TNF therapy. Infliximab (but not etanercept) largely prevents IBD and AS activity but more data are required in the case of adalimumab.

The efficacy of adalimumab in the treatment of AS is mainly supported by the findings of the recent multicentre, randomized, double-blind and placebo-controlled trial conducted by van der Heijde et al[25] who observed that the response of most of the patients treated with adalimumab was better than that observed in the patients treated with placebo.

No published studies have yet addressed the effect of switching from infliximab to adalimumab in patients with CD-related spondyloarthropathy. We have recently evaluated the clinical response to adalimumab of 19 CD patients with associated spondyloarthritis who discontinued infliximab because of intolerance or loss of efficacy, and found that it successfully controlled both articular and intestinal disease activity[26].

In conclusion, about 36% of IBD patients have at least one EIM, especially articular involvement, and the introduction of anti-TNF therapy has improved the treatment of both. In particular, the subgroup of Crohn’s disease patients with arthritic problems could be the one in which anti-TNF agents are most indicated.

Footnotes

Peer reviewer: Abraham R Eliakim, Professor, Gastro­enterology, Rambam Medical Center, Technion School of Medicine, PO Box 9602, Haifa 31096, Israel

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