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Related Concept Videos

Anthelminthic Agents01:15

Anthelminthic Agents

Anthelmintic drugs differ significantly from antiparasitic therapies targeting protozoa, primarily due to differences in parasite biology. Whereas most protozoal treatments act on proliferating cells, anthelmintics are typically directed against mature, nonproliferative helminths. The therapeutic approach considers the helminth's reliance on neuromuscular coordination, glucose metabolism, and microtubular integrity for survival, reproduction, and localization within the host. Most anthelmintics...

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Protocols for Testing the Toxicity of Novel Insecticidal Chemistries to Mosquitoes
09:32

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Published on: February 13, 2019

Mixture for controlling insecticide-resistant malaria vectors.

Cédric Pennetier1, Carlo Costantini, Vincent Corbel

  • 1Institut de Recherche pour le Développement, Cotonou, Bénin, France. c.pennetier@sussex.ac.uk

Emerging Infectious Diseases
|November 4, 2008
PubMed
Summary
This summary is machine-generated.

New bed nets mixing repellents and insecticides effectively control malaria mosquitoes, even those resistant to pyrethroids. This strategy shows promise for managing insecticide-resistant Anopheles gambiae populations.

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Area of Science:

  • Medical Entomology
  • Vector Control
  • Public Health

Background:

  • Pyrethroid resistance in Afrotropical malaria vectors like Anopheles gambiae s.s. necessitates novel control strategies.
  • Existing control methods are becoming less effective due to widespread insecticide resistance.

Purpose of the Study:

  • To evaluate the efficacy of mosquito bed nets treated with a combination of insect repellent and a low dose of organophosphorous insecticide.
  • To compare the effectiveness of these treated nets against both susceptible and insecticide-resistant An. gambiae populations.

Main Methods:

  • Mosquito bed nets were impregnated with an insect repellent and an organophosphorous insecticide mixture.
  • The treated nets were tested in a field setting in a rice-growing area near Bobo-Dioulasso, Burkina Faso.
  • Efficacy was assessed against An. gambiae populations, including those with known resistance mechanisms (kdr and Ace1R genes).

Main Results:

  • The repellent-insecticide mixture demonstrated effectiveness comparable to deltamethrin alone during the initial 2 weeks post-treatment.
  • The mixture was more effective in killing An. gambiae carrying knockdown resistance (kdr) or insensitive acetylcholinesterase resistance (Ace1R) genes.
  • No increased mortality was observed in susceptible genotypes for kdr or Ace1R alleles compared to the control.

Conclusions:

  • Mixing repellents and organophosphates on bed nets presents a potential strategy for controlling insecticide-resistant malaria vectors.
  • Further research is needed to confirm the extended residual activity and verify the safety of this combined treatment for widespread use.