Reference ranges of lymphocyte subsets in healthy Qatari adults

Aim: Determine reference ranges of lymphocyte subsets in healthy Qatari adults. Patients & Methods: Blood samples (n = 150) were investigated using four colors flow cytometery. Results: The mean percentage and absolute values of the lymphocyte subsets were: CD3: 73.6 ± 6.1%; 2,072 ± 644 cells/μl; CD4: 41.1 ± 7.9%; 1,167 ± 396 cells/ μl; CD8: 33.8 ± 7.1%; 967 ± 364 cells/μl; B cells (CD19+): 11.3 ± 3.9%; 318 ± 144 cells/μl and natural killer (NK) cells (CD16/56+): 16.5 ± 6.3%, 440 ± 401 cells/μl, respectively. The CD4/CD8 ratio was 1.3 ± 0.5. The ratio, CD3+ and CD4+ percentage and CD4+ cell counts were significantly higher in females; CD8+ and NK cell count and CD8+ percentage were significantly higher in males. The impact of age was less certain. Conclusion: The reference values of lymphocyte subsets appear to be specific to this population, demonstrating the importance of establishing local reference ranges

Correlation between Serum Leptin Levels, Body Mass Index and Obesity in Omanis

Objective: To ascertain the relationship between serum leptin levels and related variables (weight, Body Mass Index (BMI) and fat percentage) in a group of Omani obese and non-obese healthy subjects. Methods: Leptin levels were assessed in serum samples from 35 obese Omanis and 20 non-obese healthy subjects. Results: There was a significant difference (p< 0.001) in serum leptin between the obese group (34.78 + 13.96 ng/ml) and the control non-obese subjects (10.6 ± 4.2 ng/ml). Leptin levels were higher in females compared to males. There was a significantly positive correlation between leptin levels in obese subjects with weight (p=0.002), body fat percentage (p=0.0001) and BMI (p=0.001). Conclusions: We concluded that serum leptin levels are higher in the Omani obese group and correlate positively with body fatness and obesity.

Correlation between Serum Leptin Levels, Body Mass Index and Obesity in Omanis

Objective: To ascertain the relationship between serum leptin levels and related variables (weight, Body Mass Index (BMI) and fat percentage) in a group of Omani obese and non-obese healthy subjects. Methods: Leptin levels were assessed in serum samples from 35 obese Omanis and 20 non-obese healthy subjects. Results: There was a significant difference (p< 0.001) in serum leptin between the obese group (34.78 + 13.96 ng/ml) and the control non-obese subjects (10.6 ± 4.2 ng/ml). Leptin levels were higher in females compared to males. There was a significantly positive correlation between leptin levels in obese subjects with weight (p=0.002), body fat percentage (p=0.0001) and BMI (p=0.001). Conclusions: We concluded that serum leptin levels are higher in the Omani obese group and correlate positively with body fatness and obesity.