| First Author | Harry GJ | Year | 2000 |
| Journal | Brain Behav Immun | Volume | 14 |
| Issue | 4 | Pages | 288-304 |
| PubMed ID | 11120597 | Mgi Jnum | J:66874 |
| Mgi Id | MGI:1929373 | Doi | 10.1006/brbi.2000.0606 |
| Citation | Harry GJ, et al. (2000) Age-dependent cytokine responses: trimethyltin hippocampal injury in wild-type, APOE knockout, and APOE4 mice. Brain Behav Immun 14(4):288-304 |
| abstractText | In this study, the hippocampal neurotoxicant trimethyltin (TMT) was used to examine possible differential susceptibility associated with the apolipoprotein E genotype. Mice-wild type (C57BL6J), APOE knockout, and APOE4 transgenic-received either saline or TMT (2 mg/kg, ip) at either 21 days or 8 months of age. At both ages, similar mRNA levels were seen in the hippocampus across genotypes for ICAM-1, A20, and MAC-1. GFAP mRNA was higher in the APOE knockouts and APOE4 as compared to wild-type mice. Within 24 h, TMT produced cell death of hippocampal dentate granule neurons and mild astrogliosis in all animals. In 21-day-old mice, TMT exposure significantly increased mRNA levels for ICAM-1 and MIP-1alpha in all genotypes. EB-22, GFAP, TNFalpha, and TGF-beta1 levels were significantly elevated in both wild-type and APOE knockout mice following TMT. At 8 months of age, genotype specific differences were observed. mRNA levels for GFAP, TNFbeta, TNFalpha, and MIP-1alpha were increased in both APOE knockout and APOE4 mice compared to wild-type mice. TMT exposure significantly increased mRNA levels for GFAP and MIP-1alpha in all animals. TNFalpha mRNA levels were increased in wild-type and APOE4 mice while EB22 mRNA levels were increased in both the APOE knockout and APOE4 mice but not wild-type mice. These data suggest an age-dependent effect on both microglia early inflammatory responses to injury associated with the APOE genotype. |
