Abstract
The presence of all the enzymes necessary for a functional pentose cycle in the muscular, reproductive, and digestive systems of adult male and female Ascaris suum was established. The presence of the hexose monophosphate shunt (pentose cycle) in adult female ascarids has been suggested. de Ley and Vercruysse (1955) found glucose-6-phosphate dehydrogenase (G-6-PD) and 6-phosphogluconate dehydrogenase (6-PGD) activities in the muscular and reproductive systems of adult female Ascaris lumbricoides obtained from pig intestine. Entner (1957), using muscle from A. lumbricoides, confirmed the presence of G-6PD and 6-PGD and, in addition, showed ribosephosphate isomerase (I), ribulose phosphate3-epimerase (E), and transketolase (TK) activities. However, as transaldolase (TA) activity was not measured, the presence of an intact pentose cycle was not conclusively established. This report presents comparative data on the enzymes noted above, as well as on transaldolase (TA) activity in the muscular, reproductive, and digestive systems of adult male and female Ascaris suum. MATERIALS AND METHODS
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