The Relationship Between Mean Platelet Volume and Fasting Plasma Glucose and HbA1c Levels in a Large Cohort of Unselected Health Check-Up Participants

Shinichiro Oshima, Takakazu Higuchi, Sadamu Okada, Osamu Takahashi

Abstract


Background: Larger platelets are more active and mean platelet volume (MPV) is an indicator of platelet activation and an independent risk factor of cardiovascular diseases. While MPV is reported to be higher in diabetic patients, the relationship between MPV and glycemic parameters in general population remains inconclusive.

Methods: In this cross-sectional study, we studied relationship between MPV and fasting plasma glucose (FPG) and HbA1c levels in 38,204 unselected participants of general health check-up aged 20 years or older in the year of 2014 who were considered to be representative of the general population. Individuals with known diabetes, coronary artery disease and/or cerebrovascular disease who were on drug therapy and those with platelet counts below 100 × 109/L or above 400 × 109/L were excluded.

Results: The mean age of the individuals was 52.3 ± 12.1 years and 46.1% were male. There were positive associations between MPV and both FPG (r = 0.066; P < 0.001) and HbA1c (r = 0.025; P < 0.001) levels when all individuals were analyzed as a whole. While the association was only marginal in individuals with HbA1c levels below 6.5% (r = 0.009; P = 0.068), it was significant in those with HbA1c ? 6.5% (r = 0.138; P < 0.001). When the individuals were categorized into four groups according to the HbA1c values: HbA1c < 5.5%, 5.5% ? HbA1c < 6.0%, 6.0% ? HbA1c < 6.5%, and HbA1c ? 6.5%, the mean MPV was virtually same among groups with HbA1c level < 6.5% and that of the individuals with HbA1c ? 6.5 was significantly higher than groups with lower HbA1c levels. Multivariate analyses adjusted with age and sex showed the same results.

Conclusion: FPG and HbA1c appeared to be associated with MPV in unselected health check-up participants; however, the association between glycemic state and MPV was apparent only in individuals with impaired glycemic control and only marginal in those with normal glycemic control. The clinical significance of the associations warrants further study.




J Clin Med Res. 2018;10(4):345-350
doi: https://doi.org/10.14740/jocmr3361w

Keywords


Mean platelet volume; Diabetes; HbA1c; Fasting plasma glucose; Platelet activation; Thrombosis

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