31P nuclear magnetic resonance spectroscopy was applied successfully to whole intact and de-shelled snails and to the isolated digestive gland-gonad tissue complex as well as other tissues of @entity10300 . Several @entity3151 metabolites, including @entity855 and @entity857 , were observed. The mean @entity855 / @entity857 ratio calculated for the tissue complex was 3.1 and the @entity855 concentration was 0.73 nmoles/mg tissue fresh weight. Assignments for @entity860 , @entity32456 , and inorganic @entity1391 peaks were tentatively made. A major @entity3151 component was identified as a @entity14872 and this metabolite was also present in egg masses and the albumin gland. @entity49174 was not observed in the tissue complex but was present in whole animals. Infection by @entity380 resulted in marked alteration in the relative levels of @entity3151 metabolites in the digestive gland-gonad complex during the course of @entity281 . The decrease in @entity14872 was particularly notable. The relative level of a metabolite occurring at -1.1 ppm was also decreased but its identity remained unknown. The @entity855 / @entity857 ratio was not affected by @entity281 , but an increase in the relative level of inorganic @entity1391 suggested a possible decrease in phosphorylation potential.

31P NMR studies on adenylates and other @entity3151 metabolites in the schistosome vector XXXX .

@entity860 :: ('MESH:D000249', 'Chemical') :: ['AMP'] @entity10300 :: ('6526', 'Species') :: ['Biomphalaria glabrata'] @entity32456 :: ('MESH:D013403', 'Chemical') :: ['sugar phosphates'] @entity281 :: ('MESH:D007239', 'Disease') :: ['infection'] @entity1391 :: ('CHEBI:26020', 'Chemical') :: ['phosphate'] @entity380 :: ('6183', 'Species') :: ['Schistosoma mansoni'] @entity49174 :: ('MESH:C015441', 'Chemical') :: ['Phosphoarginine'] @entity3151 :: ('MESH:D010758', 'Chemical') :: ['phosphorus'] @entity857 :: ('MESH:D000244', 'Chemical') :: ['ADP'] @entity14872 :: ('CHEBI:26066', 'Chemical') :: ['phosphonate'] @entity855 :: ('MESH:D000255', 'Chemical') :: ['ATP']
@entity10300 :: (6526,Species) :: ['Biomphalaria glabrata']
