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Biomedical subjects

J Thomas

Publications and source records attributed to J Thomas.

At least 757 records · Page 42Linked to original sources

Development of amblyopia in infants.

New techniques have permitted serial assessments of visual acuity in infants. Acuity measurements in infants with astigmatism did not reveal meridional amblyopia during the first year of life. Measurements in infants with esotropia showed marked differences in acuity of the two eyes as early as the first 6 months of life. Therapeutic occlusion of the non-deviating eye improves the acuity of the deviating eye but at the expense of the occluded eye. After discontinuing occlusion, rapid increases in acuity of the formerly occluded eye can occur.

Aging↗

Neonatal IgE values in the black population.

Ninety-three cord blood samples from black neonates were evaluted for the total IgE level using the PRIST method. The results reveal values comparable to the IgE levels in other racial groups, suggesting that the influence of racial differences was not obvious at this stage.

Black People↗

Pharmacokinetics and metabolism of the anilide local anaesthetics in neonates. 11 Etidocaine.

The urinary elimination of etidocaine and several of its metabolites was investigated in neonates whose mothers had received one or more doses of etidocaine during labour. The urine collection period ranged among the neonates from 21.4 to 47.0 h post-partum. The total amounts of etidocaine and its metabolites recovered in neonatal urine represented a mean of 0.12% of the maternal dose. Some differences in the pattern of urinary metabolites were observed between neonates and adults. Mean half-life of elimination of etidocaine calculated from sigma-minus plots of the neonatal urinary data was 6.42 h. This is greater than that previously reported following intravenous administration of etidocaine to adults (2.6 h). The slower rate of elimination in neonates is probably due to an increased neonatal volume of distribution since there is evidence to show that etidocaine is extensively metabolised by the neonate.

Acetanilides↗

Pattern formation by cultured human epidermal cells: development of curved ridges resembling dermatoglyphs.

In cultures made from disaggregated human epidermal cells, growth to a confluent cell layer is followed by the emergence of patterns resembling those of human dermatoglyphs. These patterns reflect intrinsic properties of kertinocytes. In vivo, only the epidermis of the volar surfaces forms patterns, but in culture, patterns are formed by epidermal cells from other sites as well. Patterns develop by a process of cell movement which first produces ridges and then curves the ridges into figures of increasing complexity, ultimately whorls.

Cell Differentiation↗