Hepatopancreatic brush border lysis (HBL) -- a new bacterial disease of the shrimp Palaemon elegans
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Ca2+ transport processes of lobster hepatopancreatic brush-border membrane vesicles
45Ca2+ uptake by hepatopancreatic brush-border membrane vesicles of Atlantic lobster (Homarus americanus) occurred by a combination of three independent processes: (1) an amiloride-sensitive carrier-mediated transport system; (2) an amiloride-insensitive carrier-mediated transport system; and (3) a verapamil-inhibited channel process responsive to transmembrane potential. Both carrier-mediated ...
متن کاملDipeptide transport by crustacean hepatopancreatic brush-border membrane vesicles
Epithelial brush-border membrane vesicles (BBMVs) of lobster (Homarus americanus) hepatopancreas were formed by a Mg2+ precipitation technique. In these BBMVs, [14C]glycylsarcosine ([14C]Gly-Sar) uptake was stimulated by a transmembrane proton gradient. transmembrane K+ diffusion potential (inside negative) stimulated [14C]Gly-Sar uptake above that observed with short-circuited vesicles, while ...
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Transport of [35S]sulfate by brush-border membrane vesicles (BBMV) of lobster (Homarus americanus) hepatopancreas was stimulated by an outwardly directed chloride gradient. In contrast, sulfate uptake was not enhanced by inwardly directed Na+ or K+ transmembrane gradients. An inside-positive membrane potential (valinomycin and K+) stimulated SO4(2-)-Cl- exchange, whereas an inside-negative memb...
متن کاملMEMBRANE-POTENTIAL-SENSITIVE, Na-INDEPENDENT LYSINE TRANSPORT BY LOBSTER HEPATOPANCREATIC BRUSH BORDER MEMBRANE VESICLES
Transport of L-[H]lysine by epithelial brush border membrane vesicles (BBMV) of lobster hepatopancreas, formed by a magnesium precipitation technique, was insensitive to transmembrane gradients of Na, K, TMA or H + . Apparent initial lysine entry rates (15 s uptake) and extent of amino acid accumulation against a concentration gradient (overshoot) were both stimulated by transmembrane anion gra...
متن کاملElectrogenic proton-regulated oxalate/chloride exchange by lobster hepatopancreatic brush-border membrane vesicles.
The transport of [14C]oxalate (Ox2-) by epithelial brush-border membrane vesicles (BBMV) of lobster (Homarus americanus) hepatopancreas, formed by a magnesium precipitation technique, was stimulated by an outward Cl- gradient (in > out). By contrast, Ox2- uptake was not enhanced by an inward Na+ or K+ transmembrane gradient. Generation of an inside-positive membrane potential by K+ in the prese...
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ژورنال
عنوان ژورنال: Diseases of Aquatic Organisms
سال: 1997
ISSN: 0177-5103,1616-1580
DOI: 10.3354/dao029151