Carcinogenesis, Teratogenesis & Mutagenesis ›› 2022, Vol. 34 ›› Issue (2): 149-153,157.doi: 10.3969/j.issn.1004-616x.2022.02.014

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Evaluation of genotoxicity of diphenhydramine hydrochloride and caffeine compound

SHI Wenjing1, ZHANG Jiqianzhu1, ZHU Jiangbo1, ZHANG Xiaofang1, WANG Ruina2, DAI Xiaoyu1, REN Lijun1, TIAN Yijun1   

  1. 1. Department of Hygeine and Toxicology, Shanghai 200433;
    2. Department of Pharmacy, Naval Medical University, Shanghai 200433, China
  • Received:2021-09-30 Revised:2021-12-08 Published:2022-04-07

Abstract: OBJECTIVE: To investigate genetic toxicity of diphenhydramine hydrochloride and caffeine (mass ratio of diphenhydramine/caffeine is 1/2.4). METHODS:Ames test,chromosomal aberration test in CHL cells and ICR mouse bone marrow micronucleus assay were used to evaluate dphenhydramine hydrochloride and caffeine compound. In Ames test, TA97, TA98, TA100, TA102 and TA1535 were selected as indicator strains,and five test dose groups of 0.5,5,50,500 and 5 000 mg/dish were set. Chromosomal aberration test of CHL cells was divided into three dose groups,low dose (8.45 mg/mL),medium dose (16.9 mg/mL) and high dose (33.8 mg/mL). Mouse bone marrow micronucleus assay:ICR mice were given the compounds by oral gavage. There were three dose groups:low dose (21.59 mg/kg),medium dose (43.17 mg/kg) and high dose (86.35 mg/kg). RESULTS:Results of the Ames test show that there was no mutagenicity against Salmonella typhimurium with or without the metabolic activation system (S9). After CHL cells were exposed for 24 h and 4 h with or without S9, no chromosomal aberration effect was observed. In the mouse bone marrow micronucleus assay,the induction rates of micronucleus for the three doses were not significantly different from that of the solvent control group (P>0.05). CONCLUSION: These results indicate that diphenhydramine hydrochloride and caffeine compound had no genotoxicity based on our experimental conditions.

Key words: diphenhydramine, caffeine, genetic toxicity, Ames test, chromosomal aberration test, micronucleus assay

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