Elevation of erythrocyte creatine post-puberty unrelated to erythrocyte lifespan: Implications from the lack of correlation between HbA1c and erythrocyte creatine
Clinica Chimica Acta, ISSN: 0009-8981, Vol: 568, Page: 120130
2025
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Article Description
HbA1c levels are affected by both glycemia and erythrocyte lifespan. Erythrocyte creatine (EC) indicates mean erythrocyte age. Although EC levels differ between adolescent males and females, with higher levels in females, the mechanism remains unclear. We examined the EC and HbA1c levels in non-diabetic children. This study included 85 children aged 3–18 years (male/female: 44/41) without diabetes or anemia. Data on EC, age, HbA1c, glycated albumin (GA), casual plasma glucose (PG), and complete blood count were measured. We examined correlation among EC, age, and HbA1c levels separately in males and females. Additionally, we compared women with and without menstruation. Age, EC, HbA1c, GA, and PG levels were comparable between the sexes. HbA1c levels were not correlated with age in either group (males: R = 0.063, p = 0.684; females: R = 0.112, p = 0.486). In males, EC levels were not correlated with age ( R = 0.089, p = 0.567), but showed a negative trend with HbA1c ( R = 0.281, p = 0.065). In females, EC levels were positively correlated with age ( R = 0.557, p < 0.001), but not with HbA1c ( R = 0.140, p = 0.383). Females with menstruation had higher EC levels (1.64 ± 0.43 µmol/g Hb) than those without menstruation (1.23 ± 0.23 µmol/g Hb, p = 0.004): however, HbA1c differences were not significant (5.44 ± 0.28 % vs, 5.41 ± 0.22 %, p = 0.771). No significant correlation was observed between EC and HbA1c levels in non-diabetic and non-anemic children. However, the discrepancy between HbA1c and EC levels in relation to age in females was observed. These findings indicate that in females, but not in males, EC may be falsely elevated irrespective of erythrocyte lifespan after puberty.
Bibliographic Details
Elsevier BV
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