Knockdown-resistant mutations in head lice (Pediculus humanus capitis) collected from schoolchildren in Riyadh, Saudi Arabia

Abstract Head lice infestation remains one of the most common child problems. This problem is not only attributed to the ability of head lice to spread rapidly but also because of the head lice resistance that develops from incomplete or improper treatment. Pyrethroids are a group of medications tha...

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Main Authors: Imtinan H. Alghashmari, Noha T. Zelai
Format: Article
Language:English
Published: Nature Portfolio 2025-01-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-025-86574-y
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author Imtinan H. Alghashmari
Noha T. Zelai
author_facet Imtinan H. Alghashmari
Noha T. Zelai
author_sort Imtinan H. Alghashmari
collection DOAJ
description Abstract Head lice infestation remains one of the most common child problems. This problem is not only attributed to the ability of head lice to spread rapidly but also because of the head lice resistance that develops from incomplete or improper treatment. Pyrethroids are a group of medications that have been widely used for the treatment of head lice. However, in recent years, several countries reported knockdown resistance (kdr). The aim of this study is to evaluate the frequency of pyrethroid-resistant mutations in Riyadh City, Saudi Arabia. To do that, Sanger sequencing was employed to find the frequency of mutated alleles in the voltage-sensitive sodium channel gene (VSSC). The result showed that the frequency of the resistant alleles in T917I was 0.83. In addition, three new mutations (L920F, V966F, and F967L) were detected in the examined samples. These findings highlight the significant prevalence of pyrethroid-resistant mutations, which may be attributed to the cultural and tourism openness that leads to the abundance of numerous job opportunities for different workforces from all around the world.
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spelling doaj-art-9ce78400230c4e4f9855e73cf5d4ceba2025-01-19T12:24:32ZengNature PortfolioScientific Reports2045-23222025-01-011511610.1038/s41598-025-86574-yKnockdown-resistant mutations in head lice (Pediculus humanus capitis) collected from schoolchildren in Riyadh, Saudi ArabiaImtinan H. Alghashmari0Noha T. Zelai1Department of Biological Sciences, Faculty of Science, King Abdulaziz UniversityDepartment of Biological Sciences, Faculty of Science, King Abdulaziz UniversityAbstract Head lice infestation remains one of the most common child problems. This problem is not only attributed to the ability of head lice to spread rapidly but also because of the head lice resistance that develops from incomplete or improper treatment. Pyrethroids are a group of medications that have been widely used for the treatment of head lice. However, in recent years, several countries reported knockdown resistance (kdr). The aim of this study is to evaluate the frequency of pyrethroid-resistant mutations in Riyadh City, Saudi Arabia. To do that, Sanger sequencing was employed to find the frequency of mutated alleles in the voltage-sensitive sodium channel gene (VSSC). The result showed that the frequency of the resistant alleles in T917I was 0.83. In addition, three new mutations (L920F, V966F, and F967L) were detected in the examined samples. These findings highlight the significant prevalence of pyrethroid-resistant mutations, which may be attributed to the cultural and tourism openness that leads to the abundance of numerous job opportunities for different workforces from all around the world.https://doi.org/10.1038/s41598-025-86574-yHead licePyrethroidKnockdown resistance (kdr)Voltage-sensitive sodium channel geneRiyadh
spellingShingle Imtinan H. Alghashmari
Noha T. Zelai
Knockdown-resistant mutations in head lice (Pediculus humanus capitis) collected from schoolchildren in Riyadh, Saudi Arabia
Scientific Reports
Head lice
Pyrethroid
Knockdown resistance (kdr)
Voltage-sensitive sodium channel gene
Riyadh
title Knockdown-resistant mutations in head lice (Pediculus humanus capitis) collected from schoolchildren in Riyadh, Saudi Arabia
title_full Knockdown-resistant mutations in head lice (Pediculus humanus capitis) collected from schoolchildren in Riyadh, Saudi Arabia
title_fullStr Knockdown-resistant mutations in head lice (Pediculus humanus capitis) collected from schoolchildren in Riyadh, Saudi Arabia
title_full_unstemmed Knockdown-resistant mutations in head lice (Pediculus humanus capitis) collected from schoolchildren in Riyadh, Saudi Arabia
title_short Knockdown-resistant mutations in head lice (Pediculus humanus capitis) collected from schoolchildren in Riyadh, Saudi Arabia
title_sort knockdown resistant mutations in head lice pediculus humanus capitis collected from schoolchildren in riyadh saudi arabia
topic Head lice
Pyrethroid
Knockdown resistance (kdr)
Voltage-sensitive sodium channel gene
Riyadh
url https://doi.org/10.1038/s41598-025-86574-y
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