PMID- 34229382 OWN - NLM STAT- MEDLINE DCOM- 20210728 LR - 20210728 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 417 DP - 2021 Sep 5 TI - Early-life chronic di(2-ethylhexyl)phthalate exposure worsens age-related long-term associative memory decline associated with insulin/IGF-1 signaling and CRH-1/CREB in Caenorhabditis elegans. PG - 126044 LID - S0304-3894(21)01008-6 [pii] LID - 10.1016/j.jhazmat.2021.126044 [doi] AB - The ubiquitous contamination of di(2-ethylhexyl)phthalate (DEHP) in the environment, biota, and food poses potential ecological and human health risks. DEHP exposure can adversely affect learning and memory, yet the underlying mechanisms remain unclear. In this study, Caenorhabditis elegans was used to investigate the effect of early-life DEHP exposure on age-related long-term associative memory (LTAM) decline, as well as the associations with the cAMP-responsive element-binding protein (CREB) transcription factor and insulin/IGF-1 signaling (IIS). We showed that early-life exposure to DEHP reduced LTAM in wild-type worms at day-0 adulthood. Chronic exposure to DEHP from the L1 stage to day-5 adulthood worsened the age-dependent decline of LTAM. Moreover, the effect of DEHP on age-related LTAM requires CRH-1, a homolog of CREB. Mutations in daf-2, the sole receptor of C. elegans IIS, ameliorated the inhibition of LTAM by DEHP, and the effect depended on daf-16. In addition, daf-2 mutation restored the CRH-1 level in DEHP-exposed worms, and the effect required daf-16. Our study suggests that early-life chronic exposure to DEHP worsens age-related LTAM decline and the effect is associated with CRH-1 and IIS in C. elegans. The evolutionary conservation of IIS and CREB implies possible adverse effects by DEHP across species. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - How, Chun Ming AU - How CM AD - Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei 106, Taiwan. FAU - Lin, Ting-An AU - Lin TA AD - Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei 106, Taiwan. FAU - Liao, Vivian Hsiu-Chuan AU - Liao VH AD - Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei 106, Taiwan. Electronic address: vivianliao@ntu.edu.tw. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210509 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 0 (CRH-1 protein, C elegans) RN - 0 (Caenorhabditis elegans Proteins) RN - 0 (Insulin) RN - 0 (Transcription Factors) RN - 67763-96-6 (Insulin-Like Growth Factor I) RN - C42K0PH13C (Diethylhexyl Phthalate) SB - IM MH - Adult MH - Animals MH - Caenorhabditis elegans/genetics MH - *Caenorhabditis elegans Proteins/genetics MH - *Diethylhexyl Phthalate/toxicity MH - Humans MH - Insulin MH - Insulin-Like Growth Factor I MH - Memory Disorders MH - Transcription Factors OTO - NOTNLM OT - CRH-1/CREB OT - DEHP OT - Insulin/IGF-1 signaling OT - Memory decline EDAT- 2021/07/08 06:00 MHDA- 2021/07/29 06:00 CRDT- 2021/07/07 01:02 PHST- 2021/02/06 00:00 [received] PHST- 2021/04/27 00:00 [revised] PHST- 2021/05/03 00:00 [accepted] PHST- 2021/07/07 01:02 [entrez] PHST- 2021/07/08 06:00 [pubmed] PHST- 2021/07/29 06:00 [medline] AID - S0304-3894(21)01008-6 [pii] AID - 10.1016/j.jhazmat.2021.126044 [doi] PST - ppublish SO - J Hazard Mater. 2021 Sep 5;417:126044. doi: 10.1016/j.jhazmat.2021.126044. Epub 2021 May 9.