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Evaluation of indirect microparticle activity and parameters of thrombin generation test in healthy infants
Filiz Simsek Orhon1, Yonca Egin2, Betul Ulukol1
1Ankara University School of Medicine, Department of Pediatrics, Division of Social Pediatrics.
Insights
Microparticle activity remains consistent in healthy infants, but thrombin generation parameters change with age, suggesting developmental regulation. This study provides key reference values for these markers in early childhood.
Area of Science:
- Pediatric Hematology
- Hemostasis and Thrombosis
- Neonatal Research
Background:
- Circulating microparticles play a role in thrombin generation.
- Understanding these processes in infants is crucial for assessing hemostasis.
Purpose of the Study:
- To determine indirect microparticle activity in healthy infants.
- To analyze parameters of thrombin generation in relation to age in healthy infants.
Main Methods:
- 85 healthy infants were enrolled in the study.
- Blood samples were collected to measure indirect microparticle activity and thrombin generation parameters.
- Infants were grouped by age for comparative analysis.
Main Results:
- No significant differences in indirect microparticle activity were observed across age groups.
- Thrombin generation parameters (lag time, TTP, ETP, peak levels) showed age-dependent variations.
- Correlations were identified between indirect microparticle activity and thrombin generation parameters.
Conclusions:
- Microparticle characteristics appear consistent in healthy infants up to two years of age.
- Age-related changes in thrombin generation suggest developmental regulation of the hemostatic system.
- The study provides normative data for indirect microparticle activity and thrombin generation in healthy infants.
Introduction:
Circulating microparticles support thrombin generation. The aim of this study is to determine the indirect microparticle activity and the parameters of thrombin generation in healthy infants.
Materials And Methods:
A total of 85 infants who were brought to follow-up visits were taken into the study. Blood samples were collected. Thrombin generation parameters and indirect microparticle activity were measured.
Results:
The infants were divided into four groups according to the time of follow-up visits. Mean ages were 1.18 ± 0.19 months in Group 1, 6.15 ± 0.16 months in Group 2, 12.38 ± 0.46 months in Group 3 and 24.53 ± 0.39 months in Group 4, respectively. There was no statistical difference among the age-based groups with respect to the indirect microparticle activity. The lag time and the TTP levels in Group 1 were lower than that found in Group 2. The ETP and peak levels were higher in Group 1 than that of Group 2. The ETP and peak levels in Group 2 were found lower than those found in older children, but the TTP level was found relatively higher. Statistically correlations were found between indirect microparticle activity and all parameters of thrombin generation.
Conclusions:
The absence of a difference in terms of age-based microparticle levels may suggest that the features of microparticles in healthy children of this age group are similar. Age-dependent changes in thrombin generation parameters may suggest a regulation mechanism for the thrombin generation system over the first years of life. The results may provide mean values for indirect microparticle activity and thrombin generation in this healthy group.
