Antimalarial Drug II: Current Antimalarial and New Drug by E. W. McChesney, C. D. Fitch (auth.), Wallace Peters M.D.,

By E. W. McChesney, C. D. Fitch (auth.), Wallace Peters M.D., DSc, FRCP, DTM & H, William H. G. Richards BSc, Ph. D. (eds.)

The building of this quantity has been guided by way of own convictions. adventure within the box of experimental chemotherapy, either within the pharmaceutical and academia, has confident us that contemporary quantum technological advances in biochemistry, molecular biology, and immunology will let and, certainly, necessitate an more and more better use of rational drug improvement sooner or later than has been the customized in the past. partly l, consequently, we requested our participants to supply specific experiences overlaying the biology of the malaria parasites and their relation with their hosts, the experimental strategies together with tradition thoughts which are essential to take a drug from basic screening to medical trial, and an account of antimalarial drug resistance. Our moment conviction is that many examine employees are all too loath to profit from the teachings of the prior. hence we requested the participants to half 2 of this quantity to study very completely the generally scattered yet voluminous literature on these few chemical teams that experience supplied the antimalarial medicines in medical use this day. a lot could be realized from the background in their improvement and the issues that experience arisen with them in guy. a few certainly should still have a lot to supply in the event that they might be deployed in higher methods than they're at the present. this question has been taken up through a number of authors.

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1948). These authors collected urine samples from subjects who had taken 400-mg doses of CQ, oxy-CQ or SN 9584, and after these samples were made strongly alkaline they were thoroughly extracted with chloroform. On evaporation of the solvent an oil remained. 2 M phosphate buffers of pH 6-7. Further purification of the several fractions so obtained gave large amounts of the unchanged drugs and lesser amounts of the corresponding secondary amines in all three cases.

IO40 CQb 10 20 160 19 (s. ) 19 19 40 40 40 40 CQ CQ CQ CQ CQ CQ CQ HCQ HCQ CQ Albino rat (M) Albino rat (M) Albino rat (F) Albino rat (F) Albino rat (F) Albino rat (M, F) Pigmented rat (M, F) Albino rat (M, F) Pigmented rat (M, F) Mongrel dog I 2 3 4 5 6 7 8 9 Dose (mg/kg base) Compound Ex perimen tal animal (sex) Line Table 5. Comparative data on the tissue distribution of some important 4-aminoquinoline antimalarials in rats and dogs following various dosage regimens a tv :t n ::; "Ii ~ 0 0..

In connection with item (a), LEGROS and ROSNER (1971) emphasise that any physiopathological effect of the quinolines must be attributed to a direct action of the drug on the neuroretina and not to their affinity for melanin, which could, in fact, exert a protective action. Once it was established that CQ accumulates in the eye in potentially dangerous amounts, and in some patients the condition of retinopathy was diagnosed, it was obviously desirable that methods should be devised for removing the drug from the eye as rapidly as possible.

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