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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Developmental toxicity of temafloxacin hydrochloride in the long-tailed macaque (Macaca fascicularis).

The potential developmental toxicity of temafloxacin hydrochloride was studied in the long-tailed macaque (Macaca fascicularis). Ten animals in each of the three drug-treated groups (25, 50, and 100 mg/kg) were administered temafloxacin via nasogastric intubation during gestational days (GD) 20-50. A control group of ten animals received vehicle only. The dams were monitored daily for adverse physical signs and maternal blood samples were collected for analyses of serum progesterone (P), 17 beta-estradiol (E2), and chorionic gonadotropin (CG). In addition, the conceptus was monitored periodically by ultrasound during gestation to confirm growth and viability. Increased maternal toxicity (weight loss, anorexia, emesis) and embryolethality were observed at 100 mg/kg, and a no-observable-adverse-effect-level (NOAEL) of 50 mg/kg was established. The incidence of prenatal mortality was as follows: Control = 1/10 (10%); 25 mg/kg = 1/10 (10%); 50 mg/kg = 2/10 (20%); and 100 mg/kg = 5/10 (50%). Analysis of P, E2, and CG indicated no significant effect of treatment. In addition, no significant differences were observed in embryonic/fetal growth and development when compared to historical controls. No gross structural changes were observed in fetuses exposed to 50 or 100 mg/kg, although one fetus exposed to 25 mg/kg exhibited microphthalmia. This anomaly was considered spontaneous and, therefore, unrelated to treatment.[1]

References

  1. Developmental toxicity of temafloxacin hydrochloride in the long-tailed macaque (Macaca fascicularis). Tarantal, A.F., Lehrer, S.B., Lasley, B.L., Hendrickx, A.G. Teratology (1990) [Pubmed]
 
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