PMID- 2852685 OWN - NLM STAT- MEDLINE DCOM- 19890418 LR - 20190919 IS - 0260-437X (Print) IS - 0260-437X (Linking) VI - 8 IP - 6 DP - 1988 Dec TI - Assessment of the relative hazard involved with airborne irritants with additional hepatotoxic or nephrotoxic properties in mice. PG - 417-22 AB - This paper deals with the conversion of the hepatotoxicity of 1,2-dichlorobenzene (DCB), the nephrotoxicity of hexachloro-1,3-butadiene (HCBD) and the respiratory effects of these two toxicants into quantal data. It aims to provide some useful information on the best strategy used for safety evaluation. A reflex bradypnea indicative of irritation of the nasal cavities of mice occurred during a 15-min oronasal exposure to each chemical. A reduction in the development of staining for liver glucose-6-phosphatase (G6-phosphatase) and an increase in the number of damaged tubules in cryostat kidney sections stained for alkaline phosphatase were the measure of toxicity in mice subjected to a whole-body 4-h exposure to DCB and HCBD vapours, respectively. The immediate irritant responses, as well as the delayed liver and kidney responses, were measured at the peak of the chemical's action. These maximum responses were then used to establish the relationships of exposure level effects and also the median active levels of exposure (MALs). The DCB and HCBD MALs responsible for a 50% decrease in the respiratory rate of mice (RD50) were 181 and 211 ppm, respectively. The MAL required for eliciting a 50% decrease in G6-phosphatase staining intensity in DCB-exposed mice was 598 ppm and that associated with 50% of damaged tubules in HCBD-exposed mice was 7.2 ppm. On the basis of these quantitative data, potency ratios indicated that irritation and kidney injury are the primary manifestations of toxicity associated with short-term exposure to DCB and HCBD, respectively.(ABSTRACT TRUNCATED AT 250 WORDS) FAU - De Ceaurriz, J AU - De Ceaurriz J AD - Institut National de Recherche et de Securite, Vandoeuvre, France. FAU - Gagnaire, F AU - Gagnaire F FAU - Ban, M AU - Ban M FAU - Bonnet, P AU - Bonnet P LA - eng PT - Journal Article PL - England TA - J Appl Toxicol JT - Journal of applied toxicology : JAT JID - 8109495 RN - 0 (Air Pollutants) RN - 0 (Butadienes) RN - 0 (Chlorobenzenes) RN - 0 (Irritants) RN - 6PJ93I88XL (2-dichlorobenzene) RN - CQ8AAO9MO1 (hexachlorobutadiene) RN - EC 3.1.3.1 (Alkaline Phosphatase) RN - EC 3.1.3.9 (Glucose-6-Phosphatase) SB - IM MH - Air Pollutants/*toxicity MH - Alkaline Phosphatase/analysis MH - Animals MH - Butadienes/toxicity MH - Chemical and Drug Induced Liver Injury/enzymology/*etiology MH - Chlorobenzenes/toxicity MH - Glucose-6-Phosphatase/analysis MH - Histocytochemistry MH - Irritants/*toxicity MH - Kidney Diseases/*chemically induced/enzymology MH - Male MH - Mice MH - Respiratory System/drug effects EDAT- 1988/12/01 00:00 MHDA- 1988/12/01 00:01 CRDT- 1988/12/01 00:00 PHST- 1988/12/01 00:00 [pubmed] PHST- 1988/12/01 00:01 [medline] PHST- 1988/12/01 00:00 [entrez] AID - 10.1002/jat.2550080606 [doi] PST - ppublish SO - J Appl Toxicol. 1988 Dec;8(6):417-22. doi: 10.1002/jat.2550080606.