Psoriasis is associated with increased Framingham ten-year risk score for coronary heart disease in Tunisians.

BACKGROUND: To assess the ten-year cardiovascular risk for coronary heart disease (CHD) in psoriatic patients and to test the impact of psoriasis severity and duration on cardiovascular risk. METHODS: A case-control study included 202 adult psoriatic patients and 202 controls. RESULTS: Risk CHD was estimated using the Framingham risk score algorithm. Patients had a higher ten-year Framingham risk score (13.62 +/- 11.86 vs. 9.23 +/- 8.04; p = 0.002) than controls. In addition, a high risk score and a very high risk score (> 40%) were more frequent in psoriatic patients compared with controls (p = 0.043 and p < 0.001, respectively). According to the severity of psoriasis, the ten-year cardiovascular risk increases progressively and significantly (11.84 +/- 10.08; 15.59 +/- 11.79 and 16.92 +/- 14.13 for mild, moderate and severe psoriasis, respectively). CONCLUSIONS: Psoriatic patients have significantly greater risks of developing coronary heart disease than controls in relationship with psoriasis comorbidities such as hypertension, diabetes, dyslipidemia, inflammation and probably with psoriasis itself.

Comparison between electronic cigarette refill liquid and nicotine on metabolic parameters in rats.

AIMS: Nicotine is known to promote body weight loss and to disturb glucose homeostasis and lipoprotein metabolism. Electronic cigarettes, as a substitute to nicotine, are becoming increasingly popular, although there is no evidence regarding their safety. Considering the dearth of information about e-cigarette toxicity, the present study was designed to compare nicotine alone to e-liquid with or without nicotine on metabolic parameters in Wistar rats. MAIN METHODS: For this purpose, e-liquid with or without nicotine and nicotine alone (0.5mg/kg of body weight) were administered intra-peritoneally during 28 days. KEY FINDINGS: Our results show a significant decrease in food and energy intake after nicotine or e-liquid with nicotine exposure, when compared to control or e-liquid without nicotine. Analysis of lipid status identified a significant decrease in cholesterol and LDL levels in e-cigarette groups, suggesting an improvement in lipid profile. Interestingly, e-liquid without nicotine induced hyperglycemia which is negatively correlated to hepatic glycogen level, acting like nicotine alone. Furthermore, an increase in liver biomarkers was observed in all treated groups. qRT-PCR analysis showed GSK3ß up-regulation in e-liquid with nicotine as well as, surprisingly, in e-liquid without nicotine exposure. In contrast, PEPCK genes were only up-regulated in e-liquid with nicotine. SIGNIFICANCE: While some features observed in rats may not be observed in human smokers, most of our data are consistent with, e-liquid per se i.e. without nicotine, not being neutral from a metabolic stand point since disrupting glucose homeostasis in rats.