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1.
Rev. chil. anat ; 18(1): 61-8, 2000. ilus, tab, graf
Article in English | LILACS | ID: lil-270869

ABSTRACT

En el presente se estudió el efecto tóxico para la esparmatogenesis, de una inyección única del agropesticida organofosforado parathion, administrada a ratones inmaduros. Animales de 7 días de edad fueron inyectados por vía intraperitoneal con 1/3 de la LD50. Fue medido el peso corporal y testicular. Se efectúo un análisis cuali y cuantitativo de los túbulos seminíferos y de las poblaciones de células germinales en ratones controles y tratados, a los 8, 16, 28 y 50 días post-inyección. El efecto tóxico del pesticida se demuestra por una disminución del peso corporal y testicular y un daño temprano de las células germinales de los animales tratados. El efecto es reversible y la recuperación ocurre en los intervalos largos post-inyección


Subject(s)
Animals , Mice , Seminiferous Epithelium , Parathion/toxicity , Body Weight/drug effects , Germ Cells , Injections, Intraperitoneal , Insecticides, Organophosphate/toxicity , Parathion/administration & dosage , Seminiferous Tubules/anatomy & histology , Seminiferous Tubules/drug effects
2.
Indian J Physiol Pharmacol ; 1995 Jan; 39(1): 47-50
Article in English | IMSEAR | ID: sea-108393

ABSTRACT

Hens treated with Mipafox (10 mg/kg, sc), sarin (50 micrograms/kg, sc) or parathion (1 mg/kg, sc) daily for 10 days exhibited severe, moderate and no ataxia respectively on 14th day after the start of exposure. The neurotoxic esterase (NTE) activity was significantly inhibited in the brain, spinal cord and platelets of hens treated with mipafox or sarin whereas no change was noticed with parathion treatment. All three compounds significantly inhibited acetylcholinesterase (AChE) activity in the platelets. Spinal cord of hens treated with mipafox, sarin or parathion showed axonal degeneration heavy, moderate and none respectively. It is concluded that repeated administration of equitoxic doses of mipafox, sarin and parathion to hens are marked, moderate and non-delayed neurotoxic respectively.


Subject(s)
Animals , Ataxia/chemically induced , Blood Platelets/drug effects , Brain/drug effects , Carboxylic Ester Hydrolases/antagonists & inhibitors , Central Nervous System/drug effects , Chickens , Cholinesterase Inhibitors/toxicity , Female , Isoflurophate/administration & dosage , Parathion/administration & dosage , Sarin/administration & dosage , Spinal Cord/drug effects , Structure-Activity Relationship
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