The role of dermal irritation in the skin tumor promoting activity of petroleum middle distillates
Nessel, CS; Freeman, JJ; Forgash, RC; Mckee, RH
HERO ID
4945112
Reference Type
Journal Article
Year
1999
Language
English
PMID
| HERO ID | 4945112 |
|---|---|
| In Press | No |
| Year | 1999 |
| Title | The role of dermal irritation in the skin tumor promoting activity of petroleum middle distillates |
| Authors | Nessel, CS; Freeman, JJ; Forgash, RC; Mckee, RH |
| Journal | Toxicological Sciences |
| Volume | 49 |
| Issue | 1 |
| Page Numbers | 48-55 |
| Abstract | Petroleum middle distillates (PMDs), a class of hydrocarbons which boil between 350-700 degrees F, are tumor promoters in mouse skin. The promotional activity is produced under conditions that also result in local changes, including chronic irritation and epidermal hyperplasia. The present study was conducted by comparing equal weekly doses of irritating and minimally or nonirritating test materials, to assess whether tumor promotion was a secondary response to these effects. Four PMDs, C10-C14 normal paraffins (NP), lightly refined paraffinic oil (LRPO), Jet Fuel A (JF), and steam-cracked gas oil (SCGO), were evaluated. Test materials were applied undiluted (2x/week) or as 28.6% (7x/week) or 50% (4x/week) concentrations in mineral oil for 52 weeks following initiation with dimethylbenzanthracene (DMBA). When applied undiluted, all materials produced moderate irritation and significant increase in tumor incidence. When NP, LRPO, or JF were applied in mineral oil diluent, skin irritation was generally ameliorated and few, if any, tumors were produced. SCGO was irritating and produced a significant increase in tumor frequency when administered in mineral-oil diluent. These data indicate that the promotional activity of straight-run PMDs is likely related to chronic irritation at the application site and not to dose. Thus, when used appropriately in the absence of prolonged irritation, these materials should not present a tumorigenic hazard to humans. |
| Doi | 10.1093/toxsci/49.1.48 |
| Pmid | 10367341 |
| Wosid | WOS:000083455000006 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Scopus URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033036880&doi=10.1093%2ftoxsci%2f49.1.48&partnerID=40&md5=c7fc3459cd41468f59adac2116541d2e |
| Is Public | Yes |
| Language Text | English |
| Keyword | C10-C14 normal paraffins; Jet fuel; Lightly refined paraffinic oil; Petroleum middle distillates; Skin irritation; Steam cracked gas oil; Tumor promotion |