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Year : 2012  |  Volume : 16  |  Issue : 8  |  Page : 436-437

Correlation of acanthosis nigricans with insulin resistance, anthropometric, and other metabolic parameters in diabetic Indians

Department of Endocrinology, LLRM Medical College, Meerut Uttar Pradesh, India

Correspondence Address:
P P Patidar
Department of Endocrinology, G10, PG hostel, LLRM Medical College Campus, Garh road, Meerut, Uttar Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2230-8210.104122

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Introduction: Acanthosis nigricans is a non-specific reaction pattern that may accompany obesity, diabetes, excess corticosteroids, pineal tumors, malignancies, and other endocrine disorders. It is considered a cutaneous marker of tissue insulin resistance. Aims and Objectives: To determine the prevalence of acanthosis nigricans in type 2 diabetes mellitus (DM) and its correlation with various anthropometric measurements and insulin resistance by HOMA-IR and other metabolic parameters. Materials and Methods: One hundred and fifty consecutive subjects with newly diagnosed type 2 DM, attending the endocrinology OPD of LLRM Medical College, Meerut were studied. Acanthosis was graded based on standard scale of 0-4 as described by Burke et al. Anthropometric data were obtained and insulin resistance calculated as HOMA-IR from fasting insulin and fasting blood sugar values. Results: The average age of the study population was 45.2 years, with male to female ratio of 1:5. The prevalence of acanthosis in males was 56.67% and in females was 86.92%. The acanthosis neck severity grading had a statistically significant correlation with fasting glucose levels, fasting insulin levels, and insulin resistance values: HOMA-IR, HOMA-S, and HOMA-B (P < 0.05). Other acanthosis parameters such as axillary grading, acanthosis at knuckles, and skin tags, did not have a statistically significant correlation with insulin resistance. Conclusion: Acanthosis nigricans neck severity grading correlates well with insulin resistance and can be used as a clinical surrogate for assessment of severity of insulin resistance.

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