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Variations in serum alpha-L-fucosidase activity during childhood and pregnancy
J Vaysse1, P Pilardeau, L Gattegno
1Laboratoire de Biochimie, UFR de Médecine et Biologie, Bobigny, France.
Insights
Serum alpha-L-fucosidase activity (AFU) levels vary significantly with age in children and during pregnancy. These physiological changes must be considered when interpreting AFU variations in disease states.
Area of Science:
- Biochemistry
- Pediatrics
- Obstetrics
Background:
- Serum alpha-L-fucosidase activity (AFU) is a biomarker with known genetic variability.
- Understanding physiological influences on AFU is crucial for accurate clinical interpretation.
Purpose of the Study:
- To investigate age-related changes in AFU during childhood.
- To examine AFU activity variations during pregnancy and postpartum.
Main Methods:
- Analyzed serum AFU activity in 994 children aged 1 day to 15 years.
- Assessed AFU levels in pregnant individuals and postpartum.
Main Results:
- No significant sex-linked differences in AFU were observed in children.
- AFU activity showed distinct patterns in early childhood, peaking in the second month and declining by one year.
- Pregnancy led to increased AFU, with a rapid decrease post-delivery; hypertension and fetal distress did not alter pregnancy AFU levels.
Conclusions:
- Age and pregnancy are significant physiological factors influencing AFU levels.
- These factors, alongside genetic polymorphism, are essential for interpreting pathological AFU variations.
Abstract:
Variations in serum alpha-L-fucosidase activity (AFU) have been studied during childhood and pregnancy. 994 children, ages 1 day to 15 yr, were examined; no sex-linked difference was found, but significant variations according to age were demonstrated. AFU activity rose during the first 10-15 days after birth, remained high during the second month then decreased till the end of the first year, thereafter no significant changes were observed. In pregnancy, AFU activity rose and dropped quickly after delivery; neither hypertension nor fetal distress led to AFU activity changes during pregnancy. Thus, in addition to the great variability of AFU linked to the genetic polymorphism, the physiological factors such as age or pregnancy have to be taken into account to establish the significance of AFU variations in pathological situations.
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