Biomedical subjects
Publications and source records attributed to J Kowalczyk.
Methods for determining allantoin in biological, cosmetic, and pharmaceutical samples are reviewed. The methods cover 3 main categories: spectrophotometry, alkalimetric titration, and chromatography (thin-layer and liquid). Comments are given on suitability for different sample types and on further development of methods for allantoin determination.
The analyzed material included 60 children aged 5--16 years with the diagnosis of simple obesity. It was found that 30% of them, nearly all girls, had obese parents. This may suggest an increased tendency for familial occurence of obesity in girls. The birth weight of obese children was usually higher than that of children with normal body weight, and 36,6% of children began to show overweight before the age of 3 years. It was found that the index of slender body builds is much lower in obese children than in controls. The analysis demonstrated also that 28.9% of obese children were more or less retarded mentally which may be also a pathogenetic factor in obesity.