David RM, Lockhart LK, Ruble KM. Lack of sensitization for trimellitate, phthalate, terephthalate and isobutyrate plasticizers in a human repeated insult patch test.
Food Chem Toxicol 2003;
41:589-93. [PMID:
12615132 DOI:
10.1016/s0278-6915(02)00282-x]
[Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Two hundred and three human volunteers were tested for evidence of sensitization to several plasticizers following 3 weeks of dermal application three times a week. Tris(2-ethylhexyl)mellitate (TOTM; 1%, v/v), 2,2,4-trimethyl-1,3-pentanediol-diisobutyrate (TXIB; 1%, v/v), di(2-ethylhexyl)terephthalate (DEHT; 0.5%, v/v) and diethylphthalate (DEP; 2%, v/v) were applied to the skin of volunteers under semi-occlusive patch for 3 consecutive weeks and the reactions to a challenge application noted following a 2-week rest period. Slight erythema was observed in four individuals exposed to TOTM, two of which resolved within 96 h and one that occurred only after 96 h. Slight erythema was noted in three subjects exposed to TXIB, one of which resolved by 96 h and one that occurred only after 96 h. Two subjects had slight erythema to DEHT, one that resolved by 96 h and one that occurred only after 96 h. One reaction occurred with DEP at 96 h after challenge. Of the positive responses, one subject reacted to all test substances. No subject had a response grade of 1.0 or greater. Because of the low response, the overall conclusion is that none of the plasticizers demonstrated evidence of sensitization or irritation.
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