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Updated: Jun 10, 2026

Roux-en-Y Gastric Bypass Operation in Rats

Roux-en-Y Gastric Bypass Operation in Rats

Published on: June 11, 2012

Gastric bypass surgery improves psoriasis.

Eric W Hossler¹, Michele S Maroon, Chris M Mowad

¹Department of Dermatology, Geisinger Medical Center, Danville, Pennsylvania 17822, USA. ewhossler@geisinger.edu

Journal of the American Academy of Dermatology

|July 27, 2010

Summary

This summary is machine-generated.

Psoriasis is linked to obesity, a condition that can worsen the skin disease. Weight loss through gastric bypass surgery significantly improved severe psoriasis in obese patients, suggesting it as a potential therapy.

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Area of Science:

Dermatology and Metabolic Surgery
Investigating the interplay between autoimmune skin conditions and metabolic health.

Background:

Psoriasis is increasingly recognized as a systemic inflammatory disease with a significant association with obesity.
Obesity is identified as an independent risk factor for psoriasis development and severity.
Roux-en-Y gastric bypass surgery is a bariatric procedure known for inducing substantial weight loss.

Observation:

Two cases of patients with severe chronic psoriasis and extreme obesity (BMI > 50 kg/m²) were studied.
Both patients underwent Roux-en-Y gastric bypass surgery, leading to significant weight reduction.
Marked improvement in psoriasis symptoms was observed following the surgical intervention and subsequent weight loss.

Findings:

Weight loss achieved through gastric bypass surgery correlated with a significant reduction in psoriasis severity.
Potential shared pathophysiological mechanisms, such as chronic inflammation and elevated leptin levels, link psoriasis and obesity.
Leptin levels, elevated in both psoriasis and obesity, decreased post-weight loss, suggesting a role in disease modulation.

Implications:

Weight loss, particularly through bariatric surgery, may serve as an effective adjunctive therapy for obese individuals with psoriasis.
Further research into the inflammatory pathways connecting obesity and psoriasis could reveal novel therapeutic targets.
This study highlights the importance of addressing metabolic factors in the management of severe psoriasis.