Abstract
Background: Metabolic syndrome worsens complications in psoriasis patients by predisposing
them to cardiovascular diseases. Psoriasis has been widely associated with metabolic syndrome;
however, it has still not been proven owing to a limited number of studies and some of those reporting
conflicting results.
Objective: Psoriasis has reportedly been associated with metabolic syndrome; however, it has yet not
been established beyond doubt owing to conflicting literature. The present meta-analysis of observational
studies aims to evaluate the prevalence of metabolic syndrome in psoriasis patients and establish
an inferring point that psoriasis patients are certainly susceptible to metabolic syndrome. The study
will benefit clinicians to assess and monitor psoriasis patients for several associated comorbid conditions
and in its treatment.
Methods: A systematic web search for ‘Psoriasis’, ‘Metabolic Syndrome’, ‘Hypertension’, ‘Plasma
Glucose’, ‘Dyslipidaemia’, ‘Waist Circumference’ was performed, collecting all original observational
studies on humans up to April 30, 2018. Depending on the inclusion and exclusion criteria, articles
were screened for eligibility. Due to the presence of significant heterogeneity, the Odds Ratio (OR)
was calculated using a random-effect model with Der-Simonian and Laird method. The statistical heterogeneity
was determined using I2 statistics. Comprehensive Meta-Analysis Software, Version 3 was
used to perform all the analysis.
Results: Sixty-three studies encompassing 15,939 psoriasis patients and 103,984 controls were included
in this meta-analysis. Among them, 30.29 % of psoriasis patients were reported with metabolic
syndrome in comparison to 21.70 % of subjects in the control group. The present study clearly indicates
an increased prevalence of metabolic syndrome among psoriasis patients (OR: 2.077 [95% CI,
1.84 - 2.34]).
Conclusion: The findings support the fact that psoriasis patients have a higher incidence of metabolic
syndrome. Our study also recommends that psoriasis patients should be regularly monitored for metabolic
syndrome complications and its associated risk factors such as hypertension, raised triglyceride,
lowered HDL Cholesterol, increased fasting plasma glucose, and waist circumference.
Keywords:
Psoriasis, metabolic syndrome, meta-analysis, PRISMA, odds ratio (OR), comprehensive meta-analysis software.
Graphical Abstract
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