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Song RX, Zhou TT, Jia SY, Li WG, Wang J, Li BD, Shan YD, Zhang LM, Li XM. Hydrogen sulfide mitigates memory impairments via the restoration of glutamatergic neurons in a mouse model of hemorrhage shock and resuscitation. Exp Neurol 2024; 376:114758. [PMID: 38513970 DOI: 10.1016/j.expneurol.2024.114758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/28/2024] [Accepted: 03/18/2024] [Indexed: 03/23/2024]
Abstract
Impaired long-term memory, a complication of traumatic stress including hemorrhage shock and resuscitation (HSR), has been reported to be associated with multiple neurodegenerations. The ventral tegmental area (VTA) participates in both learned appetitive and aversive behaviors. In addition to being prospective targets for the therapy of addiction, depression, and other stress-related diseases, VTA glutamatergic neurons are becoming more widely acknowledged as powerful regulators of reward and aversion. This study revealed that HSR exposure induces memory impairments and decreases the activation in glutamatergic neurons, and decreased β power in the VTA. We also found that optogenetic activation of glutamatergic neurons in the VTA mitigated HSR-induced memory impairments, and restored β power. Moreover, hydrogen sulfide (H2S), a gasotransmitter with pleiotropic roles, has neuroprotective functions at physiological concentrations. In vivo, H2S administration improved HSR-induced memory deficits, elevated c-fos-positive vesicular glutamate transporters (Vglut2) neurons, increased β power, and restored the balance of γ-aminobutyric acid (GABA) and glutamate in the VTA. This work suggests that glutamatergic neuron stimulation via optogenetic assay and exogenous H2S may be useful therapeutic approaches for improving memory deficits following HSR.
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Affiliation(s)
- Rong-Xin Song
- Department of Anesthesiology, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou No.2 Hospital, Cangzhou, China
| | - Ting-Ting Zhou
- Department of Anesthesia and Trauma Research, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou No.2 Hospital, Cangzhou, China
| | - Shi-Yan Jia
- Department of Anesthesia and Trauma Research, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou No.2 Hospital, Cangzhou, China
| | - Wen-Guang Li
- Graduate School, Hebei Medical University, Shijiazhuang, China
| | - Jun Wang
- Department of Orthopedics, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou No.2 Hospital, Cangzhou, China
| | - Bao-Dong Li
- Department of Neurology, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou No.2 Hospital, Cangzhou, China
| | - Yu-Dong Shan
- Department of Anesthesia and Trauma Research, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou No.2 Hospital, Cangzhou, China
| | - Li-Min Zhang
- Department of Anesthesiology, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou No.2 Hospital, Cangzhou, China.
| | - Xiao-Ming Li
- Department of Orthopedics, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou No.2 Hospital, Cangzhou, China; Hebei Key Laboratory of Integrated Traditional and Western Medicine in Osteoarthrosis Resrearch, Cangzhou, China.
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Increased Functional Coupling between VTA and Hippocampus during Rest in First-Episode Psychosis. eNeuro 2021; 8:ENEURO.0375-20.2021. [PMID: 33658310 PMCID: PMC7986546 DOI: 10.1523/eneuro.0375-20.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 02/16/2021] [Accepted: 02/17/2021] [Indexed: 12/27/2022] Open
Abstract
Animal models suggest that interactions between the hippocampus and ventral tegmental area (VTA) underlie the onset and etiology of psychosis. While a large body of research has separately characterized alterations in hippocampal and VTA function in psychosis, alterations across the VTA and hippocampus have not been characterized in first-episode psychosis (FEP). As the phase of psychosis most proximal to conversion, studies specifically focused on FEP are valuable to psychosis research. Here, we characterize alterations in VTA-hippocampal interactions across male and female human participants experiencing their first episode of psychosis using resting state functional magnetic resonance imaging (rsfMRI). In comparison to age and sex matched healthy controls (HCs), FEP individuals had significantly greater VTA-hippocampal functional coupling but significantly less VTA-striatal functional coupling. Further, increased VTA-hippocampal functional coupling in FEP correlated with individual differences in psychosis-related symptoms. Together, these findings demonstrate alterations in mesolimbic-hippocampal circuits in FEP and extend prominent animal models of psychosis.
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