Retinal drusen counts are increased in inflammatory bowel disease, and with longer disease duration, more complications and associated IgA glomerulonephritis

Retinal drusen counts are increased in inflammatory bowel disease, and with longer disease duration, more complications and associated IgA glomerulonephritis

Retinal drusen are deposits of inflammatory proteins that are found in macular degeneration and glomerulonephritis and result, in part, from complement activation. This was a cross-sectional observational study of individuals with inflammatory bowel disease (IBD) recruited from a Gastroenterology cl...

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Bibliographic Details
Published in:Scientific reports Vol. 12; no. 1; p. 11744
Main Authors: Nicklason, E., Ham, Y., Ng, D., Glance, S., Abel, K., Harraka, P., Mack, H., Colville, D., Savige, J.
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 11-07-2022
Nature Publishing Group
Nature Portfolio
Subjects:
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Complement activation
Crohn's disease
Crohns disease
Gastroenterology
Glomerulonephritis
Humanities and Social Sciences
Immunoglobulin A
Inflammatory bowel disease
Inflammatory bowel diseases
Intestine
Macular degeneration
multidisciplinary
Observational studies
Photography
Retina
Risk factors
Science
Science (multidisciplinary)
Ulcerative colitis
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Summary:Retinal drusen are deposits of inflammatory proteins that are found in macular degeneration and glomerulonephritis and result, in part, from complement activation. This was a cross-sectional observational study of individuals with inflammatory bowel disease (IBD) recruited from a Gastroenterology clinic who underwent non-mydriatic retinal photography. Deidentified images were examined for drusen, and drusen counts and size were compared with matched controls, and examined for clinical associations. The cohort with IBD comprised 19 individuals with ulcerative colitis, 41 with Crohn’s disease and three with indeterminate colitis, including 34 males (54%) and an overall median age of 48 (IQR 23) years. Their median IBD duration was 7 (IQR 10) years, median CRP level was 7 (IQR 14) mg/L, and 28 (44%) had complications (fistula, stricture, bowel resection etc.), while 28 with Crohn’s disease (68%) had colonic involvement. Drusen counts were higher in IBD than controls (12 ± 34, 3 ± 8 respectively, p =  0.04). Counts ≥ 10 were also more common (14, 22%, and 4, 6%, p  = 0.02, OR 4.21, 95%CI 1.30 to 13.63), and associated with longer disease duration ( p  = 0.01, OR 1.06, 95%CI 1.00 to 1.13), an increased likelihood of complications ( p  = 0.003, OR 6.90, 95%CI 1.69 to 28.15) and higher CRP levels at recruitment ( p  = 0.008, OR1.02, 95%CI 1.00 to 1.05). Increased retinal drusen were found in all four individuals with Crohn’s disease and IgA glomerulonephritis. IBD and drusen may share pathogenetic mechanisms and underlying risk factors such as complement activation.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-022-15232-4