Previous epidemiological studies have demonstrated a high prevalence of cardiovascular (CV) risk factors in psoriasis patients, including metabolic syndrome, cigarette smoking, obesity, hypertension, diabetes mellitus, insulin resistance and dyslipidaemia. An increase in CV morbidity and mortality attributable to psoriasis is still under question. Primary objective: to assess CV morbidity and mortality in psoriasis and psoriatic arthritis (PsA) including stroke, coronary artery disease, myocardial infarction (MI) and peripheral artery disease. Secondary objectives: to assess if psoriasis per se is an independent CV risk factor and if psoriasis severity is a predictor of CV risk. We also evaluated the effect of conventional systemic treatments for psoriasis on CV mortality. Of the 929 identified references, 33 observational studies evaluating the rates of cardiovascular events (CVE) in patients with psoriasis and PsA compared with controls were selected. Meta-analysis of both cohort and crosssectional studies showed an increased risk of MI with Odds Ratio (OR) of 1.25 (95% CI 1.03-1.52) and 1.57 (95% CI 1.08-2.27) in psoriasis and PsA, respectively, compared with the general population. The risk of MI was more pronounced for patients having severe psoriasis and for patients with psoriasis of early onset. It remained significantly elevated after controlling for major CV risk factors. The meta-analysis identified a small, but significant association between psoriasis, PsA and coronary artery disease with an OR between 1.19 (95% CI 1.14-1.24) for cross-sectional studies, 1.20 (95% CI 1.13-1.27) for cohort studies and 1.84 (95% CI 1.09-3.09) for case-control studies. The risk of coronary artery disease seemed to be more pronounced in patients with severe psoriasis and in patients with psoriasis of early onset. The meta-analysis assessing the risk of stroke gave inconclusive results: analysis of cross-sectional studies suggested that psoriasis patients had a slightly higher risk of stroke with an OR of 1.14 (95% CI 1.08-1.99), whereas the meta-analysis of cohort studies failed to show an association. There was also an increased risk of peripheral artery disease in psoriasis. No significant increased risk of CV mortality could be shown for both psoriasis and PsA patients. The use of methotrexate was associated with a reduced incidence of cardiovascular disease in two studies.The use of etretinate was associated with a reduction of CV mortality in one study. Potential selection bias such as the 'healthy user effect' prevents from drawing definite conclusions.There may be a small, but significant increased risk of CVE, but not of CV mortality in psoriasis and PsA patients.The psoriasis attributable risk remains difficult to assess due to confounding factors. The moderate quality of CV risk factors reporting in studies should be acknowledged. In addition, heterogeneity in study design, outcome definition and
The relationship between psoriasis and increased cancer risk is debated.The aim of this study was to evaluate if there is an increase in the background risk of cancer in psoriasis patients compared with the general population. A systematic literature search was performed on PubMed, Embase and Cochrane databases, using the keywords 'Pso- Of the 1080 articles retrieved, 37 references were selected. There may be an increased risk of some solid cancers in psoriasis: respiratory tract cancer [standardized incidence ratio (SIR) = 1.52, 95% confidence interval (CI) 1.35-1.71], upper aerodigestive tract cancer (SIR = 3.05, 95% CI 1.74-5.32), urinary tract cancer (SIR = 1.31, 95% CI 1.11-1.55) and liver cancer (SIR = 1.90, 95% CI 1.48-2.44). The risk of non-Hodgkin lymphoma appears slightly increased in psoriasis (SIR = 1.40, 95% CI 1.06-1.86). Psoriasis patients have an increased risk of squamous cell carcinoma (SIR = 5.3, 95% CI 2.63-10.71) and basal cell carcinoma (SIR = 2.00, 95% CI 1.83-2.20), whereas the risk of melanoma is not increased.There was a large heterogeneity in studies assessing cancer risk in psoriasis preventing from including all studies in meta-analysis.This systematic literature review shows a small increased risk of some solid cancers in psoriasis, especially those linked to alcohol drinking and cigarette smoking. A higher risk of non-melanoma skin cancers, especially squamous cell carcinoma, is shown, mainly due to previous exposure to 8-methoxypsoralen-ultraviolet-A (PUVA), ciclosporin and possibly methotrexate.
The association between alcohol consumption and psoriasis has been frequently discussed since the 1980s, but no systematic review has been elaborated on the subject so far.The aim of this systematic literature review was to assess whether alcohol consumption is more prevalent in psoriasis patients than in the general population and whether alcohol consumption is a risk factor of psoriasis.A systematic literature search was carried out in the Medline, Embase and Cochrane databases using the keywords 'psoriasis' AND 'alcohol drinking' OR 'alcohol-related disorders'. The search was then enlarged with the keywords 'psoriasis' AND 'risk factor' OR 'comorbidity'.Altogether 911 references in English and French were found. Out of these, 837 articles were excluded by reading the abstract and 46 by reading the article. A total of 28 articles were selected. Alcohol consumption in psoriasis patients versus the general population: 23 studies were selected; 18 concluded that alcohol consumption was more prevalent in psoriasis patients, and 5 did not. Three studies compared the prevalence of excessive drinking using a questionnaire on alcohol dependence (CAGE or Self-administered alcohol screening test (SAAST)) or with quantitative criteria for excessive drinking. In these studies, excessive drinking was more prevalent among psoriasis patients than in the general population. Other articles studied the quantity and type of alcohol consumed. In 11 studies, psoriasis patients consumed more alcohol than the controls. Four other studies showed excessive alcohol consumption in psoriasis patients without control group comparison. Conversely, five studies identified no difference in alcohol consumption between psoriasis patients and the general population. The heterogeneity in the measurement of alcohol consumption did not allow performing meta-analysis. Alcohol as a risk factor for psoriasis: only five studies were selected. In four of these studies alcohol was found to be a risk factor for psoriasis. Alcohol consumption seems to be greater in psoriasis patients than in the general population. However, there is not enough evidence to establish whether alcohol consumption is indeed a risk factor for psoriasis.
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