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CSF choline levels in neurologically disturbed children
F Flentge1, J H Begeer, W R Mulder-Hajonides van der Meulen
1Department of Biological Psychiatry, Faculty of Medicine, University of Groningen, The Netherlands.
Insights
Cerebrospinal fluid (CSF) choline levels are remarkably stable across individuals, with notable exceptions in some children with psychomotor retardation. These levels increase linearly with age throughout life.
Area of Science:
- Neurochemistry
- Pediatric Neurology
Background:
- Choline is a vital nutrient essential for neurotransmitter synthesis and cell membrane integrity.
- Understanding choline levels in cerebrospinal fluid (CSF) is crucial for diagnosing and managing neurological disorders.
Purpose of the Study:
- To investigate cerebrospinal fluid (CSF) choline levels in neurologically disturbed children.
- To determine the relationship between CSF choline levels and age.
- To compare CSF choline levels in children with psychomotor retardation to healthy controls.
Main Methods:
- CSF samples were collected from 114 neurologically disturbed children and 15 controls.
- Choline levels were quantified using established biochemical assays.
- Statistical analyses, including regression analysis, were employed to assess age-related changes and group differences.
Main Results:
- CSF choline levels demonstrated high stability, with only a few children exhibiting extreme values.
- Significantly elevated CSF choline levels were observed in medication-free children with psychomotor retardation compared to controls.
- CSF choline levels showed a linear increase with age across the lifespan.
- Intracranial CSF choline concentrations were 2-3 times higher than lumbar CSF levels.
Conclusions:
- CSF choline levels are generally stable but can be elevated in specific pediatric neurological conditions like psychomotor retardation.
- The linear increase of CSF choline with age suggests a lifelong physiological regulation.
- CSF choline measurements offer potential diagnostic insights into neurological disturbances.
Abstract:
Choline levels in cerebrospinal fluid (CSF) were measured in a large group of neurologically disturbed children (n = 114) and in a control group (n = 15). Only 5 children showed CSF choline levels that differed more than 2 standard deviations from the mean of the total investigated group, suggesting that CSF choline levels are extremely stable. Of the 5 children showing extreme values, 3 suffered primarily from psychomotor retardation. Further analysis showed that the CSF choline levels in the medication-free patient group suffering from psychomotor retardation (n = 18) were significantly elevated in comparison with the control group. CSF choline levels of children were found to fit excellently in the regression line showing the increase of CSF choline levels with age as calculated earlier for adults. Therefore, CSF choline levels appear to increase linearly with age during the whole life span. From direct measurements and from measurements in consecutive fractions of lumbar CSF it is concluded that choline levels in intracranial CSF are 2-3 fold as high as those in lumbar CSF.