Abstract
Antimalarials were among the first, and today are among the most widely used, anti-infective agents. The fundamental pharmacodynamic endpoint for antimalarials is quite simple: elimination of this eukaryotic protozoal pathogen from its host; numerous surrogates for this have been developed. Antimalarial therapy is confounded by several key factors including the coexistence of multiple pharmacologically distinct Plasmodium life cycle forms in the human host; limited resources for discovery, development, and deployment of new drugs; and a high requirement for safety due to the enormous patient population and use for chemoprophylaxis of healthy travelers. Further, for any particular drug, myriad influences impact the pharmacological endpoint, including rapidity of the onset of action, potency, ‘static vs. ‘cidal activity, susceptibility to parasite resistance, immune status of the host, and the suitability of prevailing pharmacokinetics. Classic and recently described pharmacodynamic endpoints in preclinical models are presented, as are new insights into the pharmacokinetic drivers of antimalarial pharmacodynamics. The efficacy and safety of existing drugs are surveyed, and some novel experimental agents are discussed.
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References
Fairhurst RM, Wellems TE (2010) Plasmodium species (Malaria). In: Mandell GL, Bennett JE, Donlin R (eds) Mandel, Douglas and Bennett’s principles and practice of infectious diseases, vol 2, Churchill. Livingstone, Philadelphia, PA, pp 3437–3462
White NJ, Pukrittayakamee S, Hien TT et al (2014) Malaria. Lancet 383(9918):723–735. doi:10.1016/S0140-6736(13)60024-0
Shapiro TA, Goldberg DE (2006) Chemotherapy of protozoal infections: malaria. In: Brunton LL, Lazo JS, Parker KL (eds) Goodman and Gilman’s the pharmacological basis of therapeutics, 11th edn. McGraw-Hill, New York, pp 1021–1047
Gardner MJ, Hall N, Fung E et al (2002) Genome sequence of the human malaria parasite Plasmodium falciparum. Nature 419(6906):498–511. doi:10.1038/nature01097
Trager W, Jensen JB (1976) Human malaria parasites in continuous culture. Science 193(4254):673–675
Dahl EL, Rosenthal PJ (2008) Apicoplast translation, transcription and genome replication: targets for antimalarial antibiotics. Trends Parasitol 24(6):279–284. doi:10.1016/j.pt.2008.03.007
Francis SE, Sullivan DJ Jr, Goldberg DE (1997) Hemoglobin metabolism in the malaria parasite Plasmodium falciparum. Annu Rev Microbiol 51:97–123. doi:10.1146/annurev.micro.51.1.97
Painter HJ, Morrisey JM, Mather MW et al (2007) Specific role of mitochondrial electron transport in blood-stage Plasmodium falciparum. Nature 446(7131):88–91. doi:10.1038/nature05572
Gamo FJ, Sanz LM, Vidal J et al (2010) Thousands of chemical starting points for antimalarial lead identification. Nature 465(7296):305–310. doi:10.1038/nature09107
Guiguemde WA, Shelat AA, Bouck D et al (2010) Chemical genetics of Plasmodium falciparum. Nature 465(7296):311–315. doi:10.1038/nature09099
Rottmann M, McNamara C, Yeung BK et al (2010) Spiroindolones, a potent compound class for the treatment of malaria. Science 329(5996):1175–1180. doi:10.1126/science.1193225
McGhee RB (1988) Major animal models in malaria research: avian. In: Wernsdorfer WH, McGregor I (eds) Malaria: principles and practice of malariology, vol 2. Churchill Livingstone, Edinburgh, pp 1545–1567
Cox FEG (1988) Major animal models in malaria research: rodent. In: Wernsdorfer WH, McGregor I (eds) Malaria: principles and practice of malariology, vol 2. Churchill Livingstone, Edinburgh, pp 1503–1543
Fidock DA, Rosenthal PJ, Croft SL et al (2004) Antimalarial drug discovery: efficacy models for compound screening. Nat Rev Drug Discov 3(6):509–520. doi:10.1038/nrd1416
Craig AG, Grau GE, Janse C et al (2012) The role of animal models for research on severe malaria. PLoS Pathog 8(2):e1002401. doi:10.1371/journal.ppat.1002401
Angulo-Barturen I, Jimenez-Diaz MB, Mulet T et al (2008) A murine model of falciparum-malaria by in vivo selection of competent strains in non-myelodepleted mice engrafted with human erythrocytes. PLoS One 3(5):e2252. doi:10.1371/journal.pone.0002252
Collins WE (1988) Major animal models in malaria research: simian. In: Wernsdorfer WH, McGregor I (eds) Malaria: principles and practice of malariology, vol 2. Churchill Livingstone, Edinburgh, pp 1473–1501
Cox-Singh J (2012) Zoonotic malaria: Plasmodium knowlesi, an emerging pathogen. Curr Opin Infect Dis 25(5):530–536. doi:10.1097/QCO.0b013e3283558780
Bruce-Chwatt LJ (1967) Clinical trials of anti-malarial drugs. Trans R Soc Trop Med Hyg 61(3):412–426
Shapiro TA, Ranasinha CD, Kumar N et al (1999) Prophylactic activity of atovaquone against Plasmodium falciparum in humans. Am J Trop Med Hyg 60(5):831–836
Seder RA, Chang LJ, Enama ME et al (2013) Protection against malaria by intravenous immunization with a nonreplicating sporozoite vaccine. Science 341(6152):1359–1365. doi:10.1126/science.1241800
Desjardins RE, Canfield CJ, Haynes JD et al (1979) Quantitative assessment of antimalarial activity in vitro by a semiautomated microdilution technique. Antimicrob Agents Chemother 16(6):710–718
Bennett TN, Paguio M, Gligorijevic B et al (2004) Novel, rapid, and inexpensive cell-based quantification of antimalarial drug efficacy. Antimicrob Agents Chemother 48(5):1807–1810
Karl S, Wong RP, St Pierre TG et al (2009) A comparative study of a flow-cytometry-based assessment of in vitro Plasmodium falciparum drug sensitivity. Malar J 8:294. doi:10.1186/1475-2875-8-294
Sanz LM, Crespo B, De-Cozar C et al (2012) P. falciparum in vitro killing rates allow to discriminate between different antimalarial mode-of-action. PLoS One 7(2):e30949. doi:10.1371/journal.pone.0030949
Young RD, Rathod PK (1993) Clonal viability measurements on Plasmodium falciparum to assess in vitro schizonticidal activity of leupeptin, chloroquine, and 5-fluoroorotate. Antimicrob Agents Chemother 37(5):1102–1107
Paguio MF, Bogle KL, Roepe PD (2011) Plasmodium falciparum resistance to cytocidal versus cytostatic effects of chloroquine. Mol Biochem Parasitol 178(1–2):1–6. doi:10.1016/j.molbiopara.2011.03.003
Painter HJ, Morrisey JM, Vaidya AB (2010) Mitochondrial electron transport inhibition and viability of intraerythrocytic Plasmodium falciparum. Antimicrob Agents Chemother 54(12):5281–5287. doi:10.1128/AAC.00937-10
Le Manach C, Scheurer C, Sax S et al (2013) Fast in vitro methods to determine the speed of action and the stage-specificity of anti-malarials in Plasmodium falciparum. Malar J 12:424. doi:10.1186/1475-2875-12-424
Bakshi RP, Nenortas E, Tripathi AK et al (2013) Model system to define pharmacokinetic requirements for antimalarial drug efficacy. Sci Transl Med 5(205):205ra135. doi:10.1126/scitranslmed.3006684
Barrette A, Ringwald P (2010) Global report on antimalarial drug efficacy and drug resistance: 2000–2010. World Health Organization, Switzerland
Zhao X, Xu C, Domagala J et al (1997) DNA topoisomerase targets of the fluoroquinolones: a strategy for avoiding bacterial resistance. Proc Natl Acad Sci U S A 94(25):13991–13996
Hitchings GH (1969) A quarter century of chemotherapy. JAMA 209(9):1339–1340
Richards WHG (1966) Antimalarial activity of sulphonamides and a sulphone, singly and in combination with pyrimethamine, against drug resistant and normal strains of laboratory plasmodia. Nature 212(5069):1494–1495
Greenberg J, Boyd BL, Josephson ES (1948) Synergistic effect of chlorguanide and sulfadiazine against Plasmodium gallinaceum in the chick. J Pharmacol Exp Ther 94(1):60–64
Vaidya A (2001) Atovaquone-proguanil combination. In: Rosenthal PJ (ed) Antimalarial chemotherapy. Humana Press Inc., Totowa, NJ, pp 203–218
Hastings IM, Hodel EM (2014) Pharmacological considerations in the design of anti-malarial drug combination therapies—is matching half-lives enough? Malar J 13(1):62. doi:10.1186/1475-2875-13-62
White NJ (2013) Pharmacokinetic and pharmacodynamic considerations in antimalarial dose optimization. Antimicrob Agents Chemother 57(12):5792–5807. doi:10.1128/AAC.00287-13
Lazarus A (1922) Paul Ehrlich, vol 2. Rikola, Wien
Lipkin IJ, Ramsden W (1918) Nephelometric estimation of quinine in blood and urine. Br Med J 1(2994):560–561
Craig WA (1998) Pharmacokinetic/pharmacodynamic parameters: rationale for antibacterial dosing of mice and men. Clin Infect Dis 26(1):1–10, quiz 11–12
Drusano GL (2004) Antimicrobial pharmacodynamics: critical interactions of ‘bug and drug’. Nat Rev Microbiol 2(4):289–300. doi:10.1038/nrmicro862
Coatney GR (1963) Pitfalls in a discovery: the chronicle of chloroquine. Am J Trop Med Hyg 12:121–128
Sullivan DJ Jr, Gluzman IY, Russell DG et al (1996) On the molecular mechanism of chloroquine’s antimalarial action. Proc Natl Acad Sci U S A 93(21):11865–11870
Klayman DL (1985) Qinghaosu (artemisinin): an antimalarial drug from China. Science 228(4703):1049–1055
Alonso PA, Djimde A, Magill A et al (2011) A research agenda for malaria eradication: drugs. PLoS Med 8(1):e1000402. doi:10.1371/journal.pmed.1000402
Fidock DA, Nomura T, Talley AK et al (2000) Mutations in the P. falciparum digestive vacuole transmembrane protein PfCRT and evidence for their role in chloroquine resistance. Mol Cell 6(4):861–871
Sullivan DJ Jr, Matile H, Ridley RG et al (1998) A common mechanism for blockade of heme polymerization by antimalarial quinolines. J Biol Chem 273(47):31103–31107
Nomura T, Carlton JM, Baird JK et al (2001) Evidence for different mechanisms of chloroquine resistance in 2 Plasmodium species that cause human malaria. J Infect Dis 183(11):1653–1661. doi:10.1086/320707
Krishna S, White NJ (1996) Pharmacokinetics of quinine, chloroquine and amodiaquine. Clinical implications. Clin Pharmacokinet 30(4):263–299
Taylor WR, White NJ (2004) Antimalarial drug toxicity: a review. Drug Saf 27(1):25–61
Amaravadi RK, Lippincott-Schwartz J, Yin XM et al (2011) Principles and current strategies for targeting autophagy for cancer treatment. Clin Cancer Res 17(4):654–666. doi:10.1158/1078-0432.CCR-10-2634
Meyer KC, Decker C, Baughman R (2010) Toxicity and monitoring of immunosuppressive therapy used in systemic autoimmune diseases. Clin Chest Med 31(3):565–588. doi:10.1016/j.ccm.2010.05.006
Achan J, Talisuna AO, Erhart A et al (2011) Quinine, an old anti-malarial drug in a modern world: role in the treatment of malaria. Malar J 10:144. doi:10.1186/1475-2875-10-144
Warrell DA (1989) Treatment of severe malaria. J R Soc Med 82(Suppl 17):44–50, discussion 50–51
Foley M, Tilley L (1998) Quinoline antimalarials: mechanisms of action and resistance and prospects for new agents. Pharmacol Ther 79(1):55–87
Osdene TS, Russell PB, Rane L (1967) 2,4,7-Triamino-6-ortho-substituted Arylpteridines. A new series of potent antimalarial agents. J Med Chem 10(3):431–434. doi:10.1021/jm00315a031
Trenholme CM, Williams RL, Desjardins RE et al (1975) Mefloquine (WR 142,490) in the treatment of human malaria. Science 190(4216):792–794
Price RN, Uhlemann AC, Brockman A et al (2004) Mefloquine resistance in Plasmodium falciparum and increased pfmdr1 gene copy number. Lancet 364(9432):438–447. doi:10.1016/S0140-6736(04)16767-6
Karbwang J, White NJ (1990) Clinical pharmacokinetics of mefloquine. Clin Pharmacokinet 19(4):264–279. doi:10.2165/00003088-199019040-00002
Rieckmann KH (1971) Determination of the drug sensitivity of Plasmodium falciparum. JAMA 217(5):573–578
Davis TM, Hung TY, Sim IK et al (2005) Piperaquine: a resurgent antimalarial drug. Drugs 65(1):75–87
White NJ, van Vugt M, Ezzet F (1999) Clinical pharmacokinetics and pharmacodynamics and pharmacodynamics of artemether-lumefantrine. Clin Pharmacokinet 37(2):105–125
Arnold J, Alving AS, Hockwald RS et al (1955) The antimalarial action of primaquine against the blood and tissue stages of falciparum malaria (Panama, P-F-6 strain). J Lab Clin Med 46(3):391–397
Hill DR, Baird JK, Parise ME et al (2006) Primaquine: report from CDC expert meeting on malaria chemoprophylaxis I. Am J Trop Med Hyg 75(3):402–415
Beutler E (1959) The hemolytic effect of primaquine and related compounds: a review. Blood 14(2):103–139
Alving AS, Carson PE, Flanagan CL et al (1956) Enzymatic deficiency in primaquine-sensitive erythrocytes. Science 124(3220):484–485
Posner GH, Park SB, Gonzalez L et al (1996) Evidence for the importance of high-valent Fe=O and of a diketone in the molecular mechanism of action of antimalarial trioxane analogs of artemisinin. J Am Chem Soc 118:3537–3538
Newton PN, Barnes KI, Smith PJ et al (2006) The pharmacokinetics of intravenous artesunate in adults with severe falciparum malaria. Eur J Clin Pharmacol 62(12):1003–1009. doi:10.1007/s00228-006-0203-2
Benakis A, Paris M, Loutan L et al (1997) Pharmacokinetics of artemisinin and artesunate after oral administration in healthy volunteers. Am J Trop Med Hyg 56(1):17–23
Hassan Alin M, Ashton M, Kihamia CM et al (1996) Multiple dose pharmacokinetics of oral artemisinin and comparison of its efficacy with that of oral artesunate in falciparum malaria patients. Trans R Soc Trop Med Hyg 90(1):61–65
Klonis N, Xie SC, McCaw JM et al (2013) Altered temporal response of malaria parasites determines differential sensitivity to artemisinin. Proc Natl Acad Sci U S A 110(13):5157–5162. doi:10.1073/pnas.1217452110
Moehrle JJ, Duparc S, Siethoff C et al (2013) First-in-man safety and pharmacokinetics of synthetic ozonide OZ439 demonstrates an improved exposure profile relative to other peroxide antimalarials. Br J Clin Pharmacol 75(2):524–537. doi:10.1111/j.1365-2125.2012.04368.x
Dondorp AM, Yeung S, White L et al (2010) Artemisinin resistance: current status and scenarios for containment. Nat Rev Microbiol 8(4):272–280. doi:10.1038/nrmicro2331
Anderson TJ, Nair S, Nkhoma S et al (2010) High heritability of malaria parasite clearance rate indicates a genetic basis for artemisinin resistance in western Cambodia. J Infect Dis 201(9):1326–1330. doi:10.1086/651562
Takala-Harrison S, Clark TG, Jacob CG et al (2013) Genetic loci associated with delayed clearance of Plasmodium falciparum following artemisinin treatment in Southeast Asia. Proc Natl Acad Sci U S A 110(1):240–245. doi:10.1073/pnas.1211205110
Ariey F, Witkowski B, Amaratunga C et al (2014) A molecular marker of artemisinin-resistant Plasmodium falciparum malaria. Nature 505(7481):50–55. doi:10.1038/nature12876
Hudson AT (1993) Atovaquone—a novel broad-spectrum anti-infective drug. Parasitol Today 9(2):66–68
Desta Z, Zhao X, Shin JG et al (2002) Clinical significance of the cytochrome P450 2C19 genetic polymorphism. Clin Pharmacokinet 41(12):913–958. doi:10.2165/00003088-200241120-00002
Ferone R, Burchall JJ, Hitchings GH (1969) Plasmodium berghei dihydrofolate reductase. Isolation, properties, and inhibition by antifolates. Mol Pharmacol 5(1):49–59
Watkins WM, Sixsmith DG, Chulay JD (1984) The activity of proguanil and its metabolites, cycloguanil and p-chlorophenylbiguanide, against Plasmodium falciparum in vitro. Ann Trop Med Parasitol 78(3):273–278
Foote SJ, Galatis D, Cowman AF (1990) Amino acids in the dihydrofolate reductase-thymidylate synthase gene of Plasmodium falciparum involved in cycloguanil resistance differ from those involved in pyrimethamine resistance. Proc Natl Acad Sci U S A 87(8):3014–3017
Srivastava IK, Vaidya AB (1999) A mechanism for the synergistic antimalarial action of atovaquone and proguanil. Antimicrob Agents Chemother 43(6):1334–1339
Peterson DS, Walliker D, Wellems TE (1988) Evidence that a point mutation in dihydrofolate reductase-thymidylate synthase confers resistance to pyrimethamine in falciparum malaria. Proc Natl Acad Sci U S A 85(23):9114–9118
Triglia T, Menting JG, Wilson C et al (1997) Mutations in dihydropteroate synthase are responsible for sulfone and sulfonamide resistance in Plasmodium falciparum. Proc Natl Acad Sci U S A 94(25):13944–13949
Wang P, Read M, Sims PF et al (1997) Sulfadoxine resistance in the human malaria parasite Plasmodium falciparum is determined by mutations in dihydropteroate synthetase and an additional factor associated with folate utilization. Mol Microbiol 23(5):979–986
Dahl EL, Shock JL, Shenai BR et al (2006) Tetracyclines specifically target the apicoplast of the malaria parasite Plasmodium falciparum. Antimicrob Agents Chemother 50(9):3124–3131. doi:10.1128/AAC.00394-06
Clendenning WE (1965) Complications of tetracycline therapy. Arch Dermatol 91:628–632
Burrows JN, Burlot E, Campo B et al (2014) Antimalarial drug discovery—the path towards eradication. Parasitology 141(1):128–139. doi:10.1017/S0031182013000826
Flannery EL, Chatterjee AK, Winzeler EA (2013) Antimalarial drug discovery—approaches and progress towards new medicines. Nat Rev Microbiol 11(12):849–862. doi:10.1038/nrmicro3138
Coteron JM, Marco M, Esquivias J et al (2011) Structure-guided lead optimization of triazolopyrimidine-ring substituents identifies potent Plasmodium falciparum dihydroorotate dehydrogenase inhibitors with clinical candidate potential. J Med Chem 54(15):5540–5561. doi:10.1021/jm200592f
Spillman NJ, Allen RJ, McNamara CW et al (2013) Na(+) regulation in the malaria parasite Plasmodium falciparum involves the cation ATPase PfATP4 and is a target of the spiroindolone antimalarials. Cell Host Microbe 13(2):227–237. doi:10.1016/j.chom.2012.12.006
McNamara CW, Lee MC, Lim CS et al (2013) Targeting Plasmodium PI(4)K to eliminate malaria. Nature 504(7479):248–253. doi:10.1038/nature12782
Vennerstrom JL, Arbe-Barnes S, Brun R et al (2004) Identification of an antimalarial synthetic trioxolane drug development candidate. Nature 430(7002):900–904. doi:10.1038/nature02779
Acknowledgements
We thank Drs. David Sullivan and Kartiki Desai for their careful reading of the manuscript and thoughtful comments; Dr. Elizabeth Nenortas for proofing chemical structures; and Rachel Shapiro Grasmick for drawing the malaria life cycle. This project was supported by the Johns Hopkins Malaria Research Institute, the Bloomberg Family Foundation, and by NIH grants R01AI095453 and R01AI111962.
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Bakshi, R.P., Shapiro, T.A. (2016). Pharmacodynamics of Antimalarial Agents. In: Rotschafer, J., Andes, D., Rodvold, K. (eds) Antibiotic Pharmacodynamics. Methods in Pharmacology and Toxicology. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-3323-5_17
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