2 documents found, page 1 of 1
Paraoxonase activity in sera from Piaractus mesopotamicus Holmberg (Characidae)...
Bastos,Vera Lucia F. Cunha; Rossini,Ana; Alves,Marcelo V; Ceccarelli,Paulo S; de Lima,José A. Ferraz; Bastos,Jayme CunhaA paraoxonase activity present in serum of two Brazilian fish species was consistently assayed at pH 8.5 using 7.5 mM paraoxon final concentration. The paraoxonase activity was more activated by 0.5 M NaCl in serum of Piaractus mesopotanricus Holmberg, 1887 (pacu) than in serum of Hypostomus punctatus Valenciennes, 1840 (cascudo). Apparent values of K M were 3.3 x 10-3 M for cascudo and pacu paraoxonase activit...
Paraoxonase activity in liver of Pacu, Piaractus mesopotamicus Holmberg (Charac...
Bastos,Vera Lucia F. Cunha; Folly,Evelize; Rossini,Ana; Ceccarelli,Paulo S.; Senhorini,José A.; Bastos,Jayme CunhaEnzymatic production of p-nitrophenol in liver of Piaractus mesopotamicus Holmberg, 1887 was consistently assayed at pH 8.5 using 7.5 mM paraoxon as substrate. This pacu liver paraoxonase activity was activated by NaCl. Apparent values of K M were 2.42 x 10-3 M in the presence of 0.5 M NaCl and 8.99 x 10-3 M without NaCl. Apparent maximum velocity values calculated in the absence and presence of 0.5 M NaCl were...