Transport of palmitic acid across the tegument of ...

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Title Transport of palmitic acid across the tegument of the entomophilic nematode Romanomermis culicivorax
Author(s) R. Gordon, I. R. Burford
Journal Journal of Nematology
Date 1984
Volume 16
Issue 1
Start page 14
End page 21
Abstract R. culicivorax larvae, dissected out of Aedes aegypti larvae 7 days after infection, were incubated under controlled conditions in isotonic saline containing 14C-U-palmitic acid to investigate the nature of the transport mechanism(s) used by the nematode for transcuticular uptake of palmitic acid. Net uptake of the isotope by the nematode was of a logarithmic nature with respect to time. Uptake of palmitic acid was accomplished by a combination of diffusion and a mediated process which was substrate saturable and competitively inhibited by myristic and stearic acids. Both 2,4-dinitrophenol and ouabain inhibited uptake of palmitic acid and thus supported the hypothesis that the carrier system is of the active transport variety and is coupled to a Na+K+ ATPase pump..

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