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Related Concept Videos

Malaria01:29

Malaria

Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...
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Treatment Resistant Cancers

Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
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Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...
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Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
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Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
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Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu

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Updated: May 28, 2026

Methods to Investigate the Regulatory Role of Small RNAs and Ribosomal Occupancy of Plasmodium falciparum
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Published on: December 4, 2015

Malaria drug resistance: new observations and developments.

Juliana M Sá1, Jason L Chong, Thomas E Wellems

  • 1Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA.

Essays in Biochemistry
|October 26, 2011
PubMed
Summary

Drug resistance in microorganisms, particularly antimalarial resistance, emerged early and has had severe impacts. Understanding the molecular genetics of resistance is crucial for developing new treatments.

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Area of Science:

  • Pharmacology
  • Infectious Diseases
  • Molecular Genetics

Background:

  • Widespread drug resistance in microorganisms emerged in the 20th century, impacting infectious disease treatment.
  • Antimalarial resistance is a significant historical example, driven by the use of natural and synthetic drugs.
  • Early antimalarial drugs like quinine and synthetic analogs faced resistance challenges.

Purpose of the Study:

  • To provide a synopsis of antimalarial drug development, from natural remedies to synthetic compounds.
  • To review the historical contributions of antimalarial efficacy studies to clinical pharmacology.
  • To discuss emerging molecular genetic insights into drug resistance, particularly artemisinin resistance.

Main Methods:

  • Historical review of antimalarial drug development and resistance.
  • Analysis of early clinical pharmacology studies on antimalarial efficacy.
  • Examination of recent molecular genetic findings related to drug resistance.

Main Results:

  • Early documentation of atebrine-resistant malaria predates the widespread use of chloroquine and amodiaquine.
  • Natural remedies (qinghaosu, cinchona bark) and synthetic drugs have shaped antimalarial treatment.
  • Delayed parasite clearance with artemisinin derivatives is a growing concern in Southeast Asia.

Conclusions:

  • The history of antimalarial drugs is marked by the continuous evolution of parasite resistance.
  • Understanding the molecular basis of resistance is vital for combating malaria.
  • Ongoing research into drug resistance mechanisms is essential for future therapeutic strategies.