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Assay Development for High-Throughput Drug Screening Against Mycobacteria
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Published on: October 25, 2024

Resistance to macrocyclic lactones.

Adrian J Wolstenholme1, Ray M Kaplan

  • 1Dept of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA. adrianw@uga.edu

Current Pharmaceutical Biotechnology
|November 2, 2011
PubMed
Summary
This summary is machine-generated.

Macrocyclic lactone (ML) resistance is a growing threat to parasite control in livestock, particularly nematodes. Understanding resistance mechanisms and improving drug use are crucial for sustainable parasite management.

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Area of Science:

  • Veterinary Parasitology
  • Antimicrobial Resistance
  • Livestock Health

Background:

  • Macrocyclic lactones (MLs) are vital for controlling parasitic infections in livestock.
  • Increasing resistance to MLs in target organisms like nematodes poses a significant threat to animal health and agricultural productivity.
  • Severe ML resistance is already impacting small ruminants, horses, and cattle.

Purpose of the Study:

  • To highlight the escalating problem of macrocyclic lactone resistance in livestock parasites.
  • To emphasize the urgent need for a better understanding of ML resistance mechanisms, especially in nematodes.
  • To discuss challenges in distinguishing true resistance from treatment failures and the need for improved diagnostic assays.

Main Methods:

  • Review of current knowledge on ML resistance in veterinary parasites.
  • Analysis of factors contributing to treatment and prophylaxis failures.
  • Evaluation of proposed strategies for sustainable anthelmintic drug use in livestock farming.

Main Results:

  • ML resistance is a confirmed and escalating issue in various livestock species, severely compromising parasite control.
  • There is a significant knowledge gap regarding the specific mechanisms of ML resistance in nematodes.
  • Distinguishing true resistance from other causes of drug failure is difficult, necessitating the development of more robust diagnostic tools.

Conclusions:

  • Sustainable use of MLs depends on improved understanding of resistance and implementation of strategic drug administration.
  • Developing and refining diagnostic assays for ML resistance is critical.
  • Adoption of improved drug use schemes is essential to mitigate the growing threat of ML resistance in livestock parasites.