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 ORIGINAL ARTICLE
Year : 2015  |  Volume : 81  |  Issue : 5  |  Page : 464--471

Comprehensive lipid tetrad index, atherogenic index and lipid peroxidation: Surrogate markers for increased cardiovascular risk in psoriasis


1 Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
2 Department of Dermatology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India

Correspondence Address:
Dr. Medha Rajappa
Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research, Dhanvantari Nagar, Puducherry - 605 006
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0378-6323.163734

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Background and Objectives: Recently, the concept of "psoriatic march" has come to the fore, in which chronic cutaneous inflammation in psoriasis leads to systemic inflammation which, in conjunction with increased oxidative stress, triggers a cascade of events resulting in increased cardiovascular risk in patients with severe psoriasis. We, therefore, decided to study the levels of some biochemical cardiovascular risk markers: lipid peroxidation (malondialdehyde), lipoprotein (a), lipid indices and atherogenic index, in patients with psoriasis and their association with disease severity. Methods: Fortyfive patients with psoriasis and 45 age and gender-matched healthy controls were included in this cross-sectional study. Disease severity was assessed by the Psoriasis Area Severity Index (PASI). Serum malondialdehyde, lipoprotein (a) and fasting lipid profile were estimated in all study subjects. Lipoprotein ratios were computed using standard formulae. Atherogenic index was calculated as ratio of lipoprotein (a)/high-density lipoprotein. Results: In psoriasis, we observed significantly higher levels of malondialdehyde, total cholesterol, low-density lipoprotein cholesterol, non-high-density lipoprotein cholesterol, lipoprotein (a), lipid ratios, atherogenic index and comprehensive lipid tetrad index, compared to controls. These levels were directly proportional to disease severity. Serum levels of malondialdehyde correlated positively with serum lipoprotein (a), comprehensive lipid tetrad index and atherogenic index. Limitations: Different morphological types of psoriasis were not included and follow-up post-therapy was not done. A larger sample size would have validated the results further. Conclusion: Our results indicate that psoriasis, especially the severe variants, are associated with increased oxidative stress and dyslipidemia, which correlate positively with atherogenic index and hence, an increased cardiovascular risk.






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