Comparative study of adenosine deaminase activity, insulin resistance and lipoprotein(a) among smokers and healthy non-smokers

Background: Adenosine deaminase also known as adenosine aminohydrolase involved in purine metabolism. Its primary function is development and maintenance of immune system. The main objective of the study was to estimate adenosine deaminase (ADA) enzyme and find its correlation with lipoprotein(a) and insulin resistance among smokers and healthy non-smokers.Methods: Fifty smokers and fifty healthy non-smokers were selected based on WHO definition. ADA, lipid profile and glucose was estimated on a fully automated analyser by IFCC approved methods and lipoprotein(a) was done by latex enhanced immune-turbidimetric assay method respectively.Results: After appropriate screening ADA activity and insulin was significantly elevated among smokers when compared with healthy non-smokers. A positive correlation was found between pack size of cigarette and ADA activity and also with Lp(a) respectively. In addition, there was no correlation between serum lipid profile and ADA activity.Conclusions: Adenosine deaminase activity was increased in patients in response to nicotine which is the key component of cigarette smoke. These findings indicate that nicotine and carbon monoxide can alter lipoprotein synthesis and also modify LDL to oxidized form which can lead to ischemic heart disease

Circulating 25-hydroxyvitamin D status in apparently healthy adolescents and its association with body mass index in Puducherry population

Background: Several earlier studies were focused on Vitamin D status and insulin resistance in diabetes mellitus in adultpopulation. However, very few studies have been done among the healthy adolescents associating Vitamin D status with bodymass index (BMI) (anthropometric marker of central obesity). Objective: To examine the concentration of 25-hydroxyvitamin D(25[OH]D) in apparently healthy adolescent and its association with BMI in apparently healthy adolescents (12-19 years age group)of Puducherry region. Methods: About 60 apparently healthy adolescents were evaluated for anthropometric, physiological, andbiochemical (fasting insulin and glucose, lipid profile, and 25[OH]D) parameters. Correlation between Vitamin D levels and BMIwas calculated. Results: Our study demonstrated a significant low level of 25(OH)D level in overweight (BMI=25-29.9) and obeseadolescent (BMI≥30) compared to non-obese (BMI<25) group. Pearson’s correlation analysis showed strong negative associationbetween BMI and serum 25(OH)D. Conclusion: Overweight or obese adolescents are more prone to Vitamin D deficiency. Hence,major efforts should be undertaken to tackle Vitamin D deficiency in adolescents such as food fortification and micronutrientsupplementation

Comparative study of adenosine deaminase activity, insulin resistance and lipoprotein(a) among smokers and healthy non-smokers

Background: Adenosine deaminase also known as adenosine aminohydrolase involved in purine metabolism. Its primary function is development and maintenance of immune system. The main objective of the study was to estimate adenosine deaminase (ADA) enzyme and find its correlation with lipoprotein(a) and insulin resistance among smokers and healthy non-smokers.Methods: Fifty smokers and fifty healthy non-smokers were selected based on WHO definition. ADA, lipid profile and glucose was estimated on a fully automated analyser by IFCC approved methods and lipoprotein(a) was done by latex enhanced immune-turbidimetric assay method respectively.Results: After appropriate screening ADA activity and insulin was significantly elevated among smokers when compared with healthy non-smokers. A positive correlation was found between pack size of cigarette and ADA activity and also with Lp(a) respectively. In addition, there was no correlation between serum lipid profile and ADA activity.Conclusions: Adenosine deaminase activity was increased in patients in response to nicotine which is the key component of cigarette smoke. These findings indicate that nicotine and carbon monoxide can alter lipoprotein synthesis and also modify LDL to oxidized form which can lead to ischemic heart disease