PubMed · 497730
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
I D Walker. 1979-09-08. Breast or bottle.. https://doi.org/10.1136/bmj.2.6190.609-b
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
The aim of this study was to evaluate the rates of salivary clearance at seven different locations in children. The diffusant was 1 mol/l KCl in a 1.0% agarose matrix, placed in small acrylic devices which could be fastened to the teeth with dental floss. The diffusion chambers were taken from the mouth at selected time intervals and the gels transferred quantitatively to flasks containing 400 ml of 100 ppm NaCl. The fluid was agitated intermittently for 1 h and analyzed for potassium by atomic absorption spectrophotometry. For 12 subjects (5 years of age), the clearance halftimes (the time for the initial potassium concentration to decrease by half) were lowest in the lower anterior lingual regions and were highest in the upper anterior buccal regions. When the salivary flow was stimulated, the clearance halftimes for the lower and upper anterior buccal sites in the 6 subjects without spaces between their anterior teeth were significantly higher than in the 6 subjects with spaces. The results show that the clearance halftime is longest for the upper anterior buccal site which is the site most prone to nursing bottle caries in the deciduous dentition.
Explore the source record for details and available documents.
Breast milk and formula milk and the corresponding serum samples from 20 breast-fed babies, 20 formula-fed babies, and their mothers were examined at 3 days of age for beta-glucuronidase enzyme. Serum indirect bilirubin levels were also examined for all the infants. Serum indirect bilirubin concentrations were significantly higher (p < 0.001) in breast-fed (4.87 +/- 2.4 mg/dl) than in formula-fed infants (1.04 +/- 0.5 mg/dl). beta-glucuronidase activity in formula milk was negligible, while that in human milk was considerable (468.26 +/- 220.8 Sigma units/ml) and was correlated (p < 0.05) with that in the serum of the breast-fed (66.13 +/- 18.1 Sigma units/ml) than in formula fed infants (52.08 +/- 11.9 Sigma units/ml) and a significant (p < 0.05) correlation was found between its serum level and serum indirect bilirubin in both breast and formula fed infants. Also in breast-fed infants serum bilirubin concentrations were related to beta-glucuronidase activity in breast milk (p < 0.05): Breast milk beta-glucuronidase--by facilitating intestinal reabsorption of bilirubin--seems to be an important factor in the neonatal hyperbilirubinemia of breast-fed babies.