The Preventive Effects of Salubrinal against Pyrethroid-Induced Disruption of Adult Hippocampal Neurogenesis in Mice
Environmental factors, including pesticide exposure, have been identified as substantial contributors to neurodegeneration and cognitive impairments. Previously, we demonstrated that repeated exposure to deltamethrin induces endoplasmic reticulum (ER) stress, reduces hippocampal neurogenesis, and impairs cognition in adult mice. Here, we investigated the potential relationship between ER stress and hippocampal neurogenesis following exposure to deltamethrin, utilizing both pharmacological and genetic approaches. To investigate whether ER stress is associated with inhibition of neurogenesis, mice were given two intraperitoneal injections of eIf2α inhibitor salubrinal (1 mg/kg) at 24 h and 30 min prior to the oral administration of deltamethrin (3 mg/kg). Salubrinal prevented hippocampal ER stress, as indicated by decreased levels of C/EBP-homologous protein (CHOP) and transcription factor 4 (ATF4) and attenuated deltamethrin-induced reductions in BrdU-, Ki-67-, and DCX-positive cells in the dentate gyrus (DG) of the hippocampus. To further explore the relationship between ER stress and adult neurogenesis, we used caspase-12 knockout (KO) mice. The caspase-12 KO mice exhibited significant protection against deltamethrin-induced reduction of BrdU-, Ki-67-, and DCX-positive cells in the hippocampus. In addition, deltamethrin exposure led to a notable upregulation of CHOP and caspase-12 expression in a significant portion of BrdU- and Ki-67-positive cells in WT mice. Conversely, both salubrinal-treated mice and caspase-12 KO mice exhibited a considerably lower number of CHOP-positive cells in the hippocampus. Together, these findings suggest that exposure to the insecticide deltamethrin triggers ER stress-mediated suppression of adult hippocampal neurogenesis, which may subsequently contribute to learning and memory deficits in mice.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2023 |
|---|---|
| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:24 |
|---|---|
| Enthalten in: |
International journal of molecular sciences - 24(2023), 21 vom: 26. Okt. |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Toltin, Abigail C [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
2JTS8R821G |
|---|
| Anmerkungen: |
Date Completed 15.11.2023 Date Revised 10.02.2024 published: Electronic Citation Status MEDLINE |
|---|
| doi: |
10.3390/ijms242115614 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM364502428 |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM364502428 | ||
| 003 | DE-627 | ||
| 005 | 20240210232901.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231226s2023 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.3390/ijms242115614 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1287.xml |
| 035 | |a (DE-627)NLM364502428 | ||
| 035 | |a (NLM)37958604 | ||
| 035 | |a (PII)15614 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Toltin, Abigail C |e verfasserin |4 aut | |
| 245 | 1 | 4 | |a The Preventive Effects of Salubrinal against Pyrethroid-Induced Disruption of Adult Hippocampal Neurogenesis in Mice |
| 264 | 1 | |c 2023 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 15.11.2023 | ||
| 500 | |a Date Revised 10.02.2024 | ||
| 500 | |a published: Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Environmental factors, including pesticide exposure, have been identified as substantial contributors to neurodegeneration and cognitive impairments. Previously, we demonstrated that repeated exposure to deltamethrin induces endoplasmic reticulum (ER) stress, reduces hippocampal neurogenesis, and impairs cognition in adult mice. Here, we investigated the potential relationship between ER stress and hippocampal neurogenesis following exposure to deltamethrin, utilizing both pharmacological and genetic approaches. To investigate whether ER stress is associated with inhibition of neurogenesis, mice were given two intraperitoneal injections of eIf2α inhibitor salubrinal (1 mg/kg) at 24 h and 30 min prior to the oral administration of deltamethrin (3 mg/kg). Salubrinal prevented hippocampal ER stress, as indicated by decreased levels of C/EBP-homologous protein (CHOP) and transcription factor 4 (ATF4) and attenuated deltamethrin-induced reductions in BrdU-, Ki-67-, and DCX-positive cells in the dentate gyrus (DG) of the hippocampus. To further explore the relationship between ER stress and adult neurogenesis, we used caspase-12 knockout (KO) mice. The caspase-12 KO mice exhibited significant protection against deltamethrin-induced reduction of BrdU-, Ki-67-, and DCX-positive cells in the hippocampus. In addition, deltamethrin exposure led to a notable upregulation of CHOP and caspase-12 expression in a significant portion of BrdU- and Ki-67-positive cells in WT mice. Conversely, both salubrinal-treated mice and caspase-12 KO mice exhibited a considerably lower number of CHOP-positive cells in the hippocampus. Together, these findings suggest that exposure to the insecticide deltamethrin triggers ER stress-mediated suppression of adult hippocampal neurogenesis, which may subsequently contribute to learning and memory deficits in mice | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Deltamethrin | |
| 650 | 4 | |a ER stress | |
| 650 | 4 | |a adult neurogenesis | |
| 650 | 4 | |a caspase-12 | |
| 650 | 4 | |a hippocampus | |
| 650 | 4 | |a salubrinal | |
| 650 | 7 | |a decamethrin |2 NLM | |
| 650 | 7 | |a 2JTS8R821G |2 NLM | |
| 650 | 7 | |a salubrinal |2 NLM | |
| 650 | 7 | |a Caspase 12 |2 NLM | |
| 650 | 7 | |a EC 3.4.22.- |2 NLM | |
| 650 | 7 | |a Bromodeoxyuridine |2 NLM | |
| 650 | 7 | |a G34N38R2N1 |2 NLM | |
| 650 | 7 | |a Ki-67 Antigen |2 NLM | |
| 650 | 7 | |a Pyrethrins |2 NLM | |
| 700 | 1 | |a Belkadi, Abdelmadjid |e verfasserin |4 aut | |
| 700 | 1 | |a Gamba, Laura M |e verfasserin |4 aut | |
| 700 | 1 | |a Hossain, Muhammad M |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t International journal of molecular sciences |d 2008 |g 24(2023), 21 vom: 26. Okt. |w (DE-627)NLM185552161 |x 1422-0067 |7 nnns |
| 773 | 1 | 8 | |g volume:24 |g year:2023 |g number:21 |g day:26 |g month:10 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.3390/ijms242115614 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 24 |j 2023 |e 21 |b 26 |c 10 | ||