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Gentry, W.B. et al.

Gentry, Laurenzana, Williams, West, Berg, Terlea, Owens,

Safety and efficiency of an anti-(+)-methamphetamine monoclonal antibody in the protection against cardiovascular and central nervous system effects of (+)-methamphetamine in rats.

The purpose of these studies was to determine if a high-affinity, anti-(+)-methamphetamine (METH) monoclonal antibody (mAb6H4; K(D)=11 nM) protects against METH-induced central nervous and cardiovascular system effects in rats. Rats (n=5 per group) received one of three anti-METH mAb6H4 doses, equal to 0.32, 0.56 or 1 times the mole equivalent (mol-eq) amount of METH in the body following a 1 mg/kg iv METH dose. Each rat was challenged with METH (1 mg/kg, iv) 1 and 4 days after the anti-METH mAb dose. The 1 mol-eq anti-METH mAb dose significantly reduced the duration of METH-induced locomotor activity (horizontal locomotion and rearing events), heart rate and blood pressure effects from 2 to 3 h to about an hour. This resulted in a significant reduction in total locomotor activity and the area under the hemodynamic effect vs. time curve for heart rate and blood pressure. In addition, the time to peak locomotor activity was decreased after the 1 mol-eq mAb dose vs. the lower doses. These changes were limited to the first METH challenge. The responses to the second METH challenge were not different from baseline. The peak hemodynamic and locomotor activity values were unchanged after both challenges. These results indicate anti-METH mAb6H4 can safely reduce the hemodynamic and locomotor effects of METH given one day after anti-METH IgG, and that the mAb is safe when administered in the absence of METH. These results are important because they indicate these antibody medications have simultaneous beneficial effects in multiple organ systems.[1]

References

Safety and efficiency of an anti-(+)-methamphetamine monoclonal antibody in the protection against cardiovascular and central nervous system effects of (+)-methamphetamine in rats. Gentry, W.B., Laurenzana, E.M., Williams, D.K., West, J.R., Berg, R.J., Terlea, T., Owens, S.M. Int. Immunopharmacol. (2006) [Pubmed]

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