Adult and suckling (13 days old) rat intestinal brush borders have been purified by
the procedure of Schmitz et al. (25). Enzymatic proteins have been separated by polyacrylamide
gel electrophoresis. In the adult rat, enzyme activities in order from the origin were: maltase/
glucoamylase/sucrase-isomaltase (protein band 3), lactase (protein band 5), maltase/sucraseisomaltase
(protein band 6) and alkaline phosphatase (protein bands 8 and 9). In the suckling rat,
protein band 5 associated with lactase activity was found to be markedly higher compared to the
adult rat. Gels were completely devoid of sucrase-isomaltase activity while protein band 3 was
strikingly reduced and protein band 6 absent. After hydrocortisone administration to suckling rats,
a new band associated with sucrase-isomaltase activity appeared in position 6, whereas protein
band 3 markedly increased with the simultaneous appearance of sucrase-isomaltase activity.
Two hundred and eleven male street prostitutes were interviewed and administered the SCL 90-R psychological symptom checklist. When compared to nonpatient normals, male prostitutes exhibited significantly higher levels of psychopathology. However, when compared to adult psychiatric outpatients, male prostitutes exhibited significantly less psychopathology on all symptom dimensions of the SCL 90-R except paranoid ideation. The male prostitutes' elevated scores on the psychological symptom checklist may reflect their response to an often dangerous and chaotic environment. However, it is as likely that their psychological functioning leads them to this particular milieu.
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