Changes in myelinated nerve fibers and skeletal muscle of rats exposed to high doses of permethrin. 1990

M J Cavaliere, and M Y Maeda, and L W Shih, and F R Puga
Instituto Adolfo Lutz, São Paulo, Brazil.

Neurological signs and segmental demyelination in a cervical nerve were observed in rats treated orally with permethrin (300 mg/kg/day) for 5 days. Inflammatory and degenerative signals were recorded in the diaphragm muscle. These effects were more intense with the trade grade than with the technical grade product. The possible influence of the percentage of cis:trans isomers on the intensity of the observed effects is discussed.

UI MeSH Term Description Entries
D007306 Insecticides Pesticides designed to control insects that are harmful to man. The insects may be directly harmful, as those acting as disease vectors, or indirectly harmful, as destroyers of crops, food products, or textile fabrics. Insecticide
D008297 Male Males
D009132 Muscles Contractile tissue that produces movement in animals. Muscle Tissue,Muscle,Muscle Tissues,Tissue, Muscle,Tissues, Muscle
D009413 Nerve Fibers, Myelinated A class of nerve fibers as defined by their structure, specifically the nerve sheath arrangement. The AXONS of the myelinated nerve fibers are completely encased in a MYELIN SHEATH. They are fibers of relatively large and varied diameters. Their NEURAL CONDUCTION rates are faster than those of the unmyelinated nerve fibers (NERVE FIBERS, UNMYELINATED). Myelinated nerve fibers are present in somatic and autonomic nerves. A Fibers,B Fibers,Fiber, Myelinated Nerve,Fibers, Myelinated Nerve,Myelinated Nerve Fiber,Myelinated Nerve Fibers,Nerve Fiber, Myelinated
D011722 Pyrethrins The active insecticidal constituent of CHRYSANTHEMUM CINERARIIFOLIUM flowers. Pyrethrin I is the pyretholone ester of chrysanthemummonocarboxylic acid and pyrethrin II is the pyretholone ester of chrysanthemumdicarboxylic acid monomethyl ester. Pyrethrin,Pyrethroid,Pyrethroids
D011919 Rats, Inbred Strains Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding. August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus
D026023 Permethrin A pyrethroid insecticide commonly used in the treatment of LICE INFESTATIONS and SCABIES. Cyclopropanecarboxylic Acid, 3-(2,2-dichloroethenyl)-2,2-dimethyl-, (3-phenoxyphenyl)methyl ester,(m-Phenoxybenzyl)-cis,trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate,3-Phenoxybenzyl-(+-)-cis,trans-2,2-dichlorovinyl-2,2-dimethyl-cyclopropylcarboxylic acid, ester,3-Phenoxybenzyl-cis,trans-(1RS)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate,Ambush,Elimite,FMC-33297,NIA-33297,NRDC-143,NRDC-147,Nittifor,PP-557,Permethrin, (1R-cis)-Isomer,Permethrin, (1R-trans)-Isomer,Permethrin, (1S-cis)-Isomer,Permethrin, (1S-trans)-Isomer,Permethrin, (cis)-Isomer,Permethrin, (cis-(+-))-Isomer,Permethrin, (trans)-Isomer,Permethrin, (trans-(+-))-Isomer,Permethrin, trans-(1RS)-Isomer,S-3151,cis-(1RS)-permethrin,cis-permethrin,permethrin, cis-(1RS)-isomer,trans-(1RS)-Permethrin,trans-permethrin,FMC 33297,FMC33297,NIA 33297,NIA33297,NRDC 143,NRDC 147,NRDC143,NRDC147,PP 557,PP557,S 3151,S3151,cis permethrin,trans permethrin

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