Chlorfenapyr poisoning: a systematic review
Abstract
INTRODUCTION: Chlorfenapyr, a N-substituted halogenated pyrrole, is a broad-spectrum insecticide. The insecticidal activity of chlorfenapyr depends on its biotransformation by hepatic cytochrome P450 monooxygenases to tralopyril, which uncouples mitochondrial oxidative phosphorylation and disrupts adenosine triphosphate production. Neither the metabolism of chlorfenapyr nor the mechanism of tralopyril is completely elucidated. Acute human chlorfenapyr poisoning is not well characterized, and best practice in management following acute exposure is unclear. The purpose of this review is to characterize acute human chlorfenapyr poisoning by its clinical course, laboratory investigations, and imaging findings and propose a management plan for acute human chlorfenapyr exposure.
METHODS: We systematically searched PubMed, Web of Science, Google Scholar, and EMBASE from inception to April 2024 across all languages for human chlorfenapyr and tralopyril cases, with descriptions of exposure, clinical manifestations, and clinical course included. Only manuscripts and abstracts from scientific conferences with sufficient clinical data following acute human exposures were included. In vitro studies, animal studies, agricultural studies, environmental impact studies, and non-clinical human studies were excluded. We then reviewed citations of included studies for additional eligible publications. Non-English publications were translated using Google Translate or primarily translated by our…
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