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J Pak Med Assoc. 2014 Feb;64(2):184-8.

Status of serum adiponectin related to insulin resistance in prediabetics.


OBEJCTIVE: To find the status of serum adiponectin in individuals progressing towards Type 2 diabetes mellitus and compare it with normal glucose tolerant subjects to determine the stage where alteration of adiponectin occurred.


The cross-sectional study was carried out at the Department of Biochemistry, Jinnah Postgraduate Medical Centre, Karachi, during January to August 2008. Subjects were invited through various diabetes screening camps. A total of 608 subjects > or = 30 years of age without prior history of diabetes were screened through fasting plasma glucose and 2-hour oral glucose tolerance test. Forty randomly selected pre-diabetic subjects and 40 age and gender-matched subjects were included in the study. Anthropometric measurements were done. Serum insulin and adiponectin were estimated by enzyme-linked immunosorbent assay. Homeostasis model assessment of insulin resistance (HOMA-IR) was used to calculate insulin resistance mathematically.


Mean fasting and two-hour plasma glucose, body mass index, waist, hip circumference and blood pressure were significantly raised in pre-diabetics compared to those with normal glucose tolerance. Adiponectin was significantly decreased, while insulin and HOMA-IR were raised significantly in the pre-diabetics. Adiponectin showed significant negative correlation with body mass index (r = -0.31, p = 0.005), fasting plasma glucose (r = -0.24, p = 0.032), 2-hour plasma glucose (r = -0.42, p < 0.0001)), insulin (r = -0.43, p < 0.0001) and HOMA-IR (r = -0.43, p < 0.0001) and remained significant after adjustment of body mass index, gender and insulin level in pre-diabetics.


Adiponectin estimation may help in earlier identification of impending diabetes. However, casual link between adiponectin and pre-diabetes remained unexplored due to the study design and small sample size that warrants longitudinal large-scale studies.

[PubMed - indexed for MEDLINE]
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