Bone alkaline phosphatase and height velocity in short normal children undergoing growth-promoting treatments: longitudinal study

Author:

Crofton P M1,Stirling H F1,Kelnar C J1

Affiliation:

1. Department of Paediatric Biochemistry, Royal Hospital for Sick Children, Edinburgh, UK

Abstract

Abstract We studied the temporal and quantitative relation between bone alkaline phosphatase (ALP) and height velocity in 62 short normal children as part of a prospective randomized study to compare placebo, growth hormone, oxandralone, and testosterone, singly and in combination, in promoting short-term growth acceleration and increased final height. The pretreatment cross-sectional correlation between bone ALP and height velocity was poor (P > or = 0.25), but was much higher (P = 0.0001) 3 months after treatment started. In each treatment group, there was a parallel relation between bone ALP and height velocity through time. Individual children showed a variety of growth responses over 12-42 months, but in almost all cases bone ALP paralleled height velocity. Within individual children, bone ALP was strongly correlated with 6-month height velocity (r > 0.9 in 30% of the children, r > 0.7 in 70%). We conclude that bone ALP is a useful short-term marker of growth in short normal children treated with growth hormone.

Publisher

Oxford University Press (OUP)

Subject

Biochemistry (medical),Clinical Biochemistry

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