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Zhang K, Ma R, Feng L, Liu P, Cai S, Tong C, Zheng J. Albumin alleviated esketamine-induced neuronal apoptosis of rat retina through downregulation of Zn2+-dependent matrix metalloproteinase 9 during the early development. BMC Neurosci 2022; 23:66. [PMID: 36384553 PMCID: PMC9670403 DOI: 10.1186/s12868-022-00753-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 11/04/2022] [Indexed: 11/17/2022] Open
Abstract
Aims Esketamine upregulates Zn2+-dependent matrix metalloproteinase 9 (MMP9) and increases the neuronal apoptosis in retinal ganglion cell layer during the early development. We aimed to test whether albumin can alleviate esketamine-induced apoptosis through downregulating Zn2+-dependent MMP9. Methods We investigate the role of Zn2+ in esketamine-induced neuronal apoptosis by immunofluorescence. MMP9 protein expression and enzyme activity were investigated by zymography in situ., western blot and immunofluorescence. Whole-mount retinas from P7 Sprague-Dawley rats were used. Results We demonstrated that esketamine exposure increased Zn2+ in the retinal GCL during the early development. Zn2+-dependent MMP9 expression and enzyme activity up-regulated, which eventually aggravated apoptosis. Albumin effectively down-regulated MMP9 expression and activity via binding of free zinc, ultimately protected neurons from apoptosis. Meanwhile albumin treatment promoted activated microglia into multi-nucleated macrophagocytes and decreased the inflammation. Conclusion Albumin alleviates esketamine-induced neuronal apoptosis through decreasing Zn2+ accumulation in GCL and downregulating Zn2+-dependent MMP9. Supplementary Information The online version contains supplementary material available at 10.1186/s12868-022-00753-5.
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Zhang K, Wu L, Lin K, Zhang M, Li W, Tong X, Zheng J. Integrin-dependent microgliosis mediates ketamine-induced neuronal apoptosis during postnatal rat retinal development. Exp Neurol 2021; 340:113659. [PMID: 33640375 DOI: 10.1016/j.expneurol.2021.113659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/27/2021] [Accepted: 02/23/2021] [Indexed: 02/02/2023]
Abstract
PURPOSE Remodeling of the extracellular matrix (ECM) by matrix metalloproteinases (MMPs) plays a pivotal role for microglia in developing retina. We tested whether integrin-dependent microgliosis mediates ketamine-induced neuronal apoptosis in the developing rat retina. METHODS We performed immunofluorescence assays to investigate the role of integrin receptors expressed in the microglia in ketamine-induced neuronal apoptosis. Quantitative reverse transcription polymerase chain reaction (RT-qPCR) and enzyme-linked immunosorbent assay (ELISA) were used to investigate the protein and mRNA levels of cytokines (TNF-α, IL-1β) and/or chemokines (CCL2, CXCL6, CXCL10, and CXCL12). Experiments were performed using whole-mount retinas dissected from P7 Sprague-Dawley rats. RESULTS Integrin receptors expressed in microglia were upregulated in ketamine-induced neuronal apoptosis in the early developing rat retina. Downregulating integrin receptors with RGD peptide ameliorated ketamine-induced microgliosis through: 1) ameliorating the change in microglia morphology from immature ramified microglia to an amoeboid state; 2) decreasing the number of microglia and intensity of activated microglia in the retinal ganglion cell layer (GCL); and 3) decreasing cytokine (TNF-α and IL-1β) and chemokine (CCL2, CXCL10) levels in the retinal tissue. Inhibition of activated microglia with minocycline or the blockade of cytokines (TNF-α and IL-1β) with a receptor antagonist (RA) attenuated neuronal apoptosis after exposure to ketamine. CONCLUSIONS The upregulation of integrin β1 receptors in the microglia acts as a signaling molecule, triggering microgliosis to aggravate ketamine-induced neuronal apoptosis via the release of TNF-α and IL-1β in the early developing rat retina.
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Affiliation(s)
- Kan Zhang
- Department of Anesthesiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China; Center for Brain Science, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Lei Wu
- Department of Anesthesiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China; Center for Brain Science, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Kana Lin
- Center for Brain Science, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China; Department of Pharmacy, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Mazhong Zhang
- Department of Anesthesiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China; Center for Brain Science, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Weiguang Li
- Center for Brain Science, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China; Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Xiaoping Tong
- Center for Brain Science, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China; Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
| | - Jijian Zheng
- Department of Anesthesiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China; Center for Brain Science, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.
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Wu L, Zhang K, Sun L, Bai J, Zhang M, Zheng J. Laminin degradation by matrix metalloproteinase 9 promotes ketamine-induced neuronal apoptosis in the early developing rat retina. CNS Neurosci Ther 2020; 26:1058-1068. [PMID: 32562453 PMCID: PMC7539835 DOI: 10.1111/cns.13428] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/21/2020] [Accepted: 05/24/2020] [Indexed: 12/15/2022] Open
Abstract
AIMS During early development, laminin degradation contributes to the death of neurons. This study aims to investigate the role and regulation of laminin in ketamine-induced apoptosis. METHODS We performed terminal deoxynucleotidyl transferase biotin-dUTP nick end labeling (TUNEL) and immunohistochemical assays to investigate the roles of the non-integrin laminin receptor, matrix metalloproteinase 9 (MMP9) in ketamine-induced neuronal apoptosis. In situ zymography, Western blot, and immunofluorescence were used to explore the relationships between laminin, MMP9 activity, and Zn2+ . Experiments were performed using whole-mount retinas dissected from Sprague Dawley rats. RESULTS The TUNEL and immunohistochemical assays indicated that ketamine-induced neuronal apoptosis in early developing rat retina. Blockade of non-integrin laminin receptor promoted ketamine-induced apoptosis, while non-integrin laminin receptor activation attenuated ketamine-induced apoptosis. Ketamine-induced laminin degradation, possibly by enhancing the activity of MMP9. MMP9 inhibition reduced ketamine-induced apoptosis by reducing laminin degradation. Downregulation of Zn2+ attenuated the increased MMP9 activity, laminin degradation caused by ketamine and significantly reduced ketamine-induced neuronal apoptosis. CONCLUSION Laminin degradation by MMP9 promoted ketamine-induced neuronal apoptosis in early developing rat retina. The non-integrin laminin receptor may be a pathway involved in ketamine-induced apoptosis. Zn2+ downregulation may play a protective role against ketamine-induced neuronal apoptosis through inhibiting MMP9 activity.
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Affiliation(s)
- Lei Wu
- Department of AnesthesiologyShanghai Children’s Medical Center Affiliated to School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Kan Zhang
- Department of AnesthesiologyShanghai Children’s Medical Center Affiliated to School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Liping Sun
- Department of AnesthesiologyShanghai Children’s Medical Center Affiliated to School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Jie Bai
- Department of AnesthesiologyShanghai Children’s Medical Center Affiliated to School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Mazhong Zhang
- Department of AnesthesiologyShanghai Children’s Medical Center Affiliated to School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Jijian Zheng
- Department of AnesthesiologyShanghai Children’s Medical Center Affiliated to School of MedicineShanghai Jiao Tong UniversityShanghaiChina
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Lyu D, Tang N, Womack AW, He YJ, Lin Q. Neonatal ketamine exposure-induced hippocampal neuroapoptosis in the developing brain impairs adult spatial learning ability. Neural Regen Res 2020; 15:880-886. [PMID: 31719253 PMCID: PMC6990767 DOI: 10.4103/1673-5374.268929] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 02/25/2019] [Accepted: 06/10/2019] [Indexed: 12/19/2022] Open
Abstract
Ketamine exposure can lead to selective neuroapoptosis in the developing brain. p66ShcA, the cellular adapter protein expressed selectively in immature neurons, is a known pro-apoptotic molecule that triggers neuroapoptosis when activated. Sprague-Dawley rats at postnatal day 7 were subcutaneously injected in the neck with ketamine 20 mg/kg, six times at 2-hour intervals. At 0, 1, 3, and 6 hours after final injection, western blot assay was used to detect the expression of cleaved caspase-3, p66ShcA, and phosphorylated p66ShcA. We found that the expression of activated p66ShcA and caspase-3 increased after ketamine exposure and peaked at 3 hours. The same procedure was performed on a different group of rats. At the age of 4 weeks, spatial learning and memory abilities were tested with the Morris water maze. Latency to find the hidden platform for these rats was longer than it was for control rats, although the residence time in the target quadrant was similar. These findings indicate that ketamine exposure resulted in p66ShcA being activated in the course of an apoptotic cascade during the neonatal period. This may have contributed to the deficit in spatial learning and memory that persisted into adulthood. The experimental protocol was approved by the Institutional Animal Care and Use Committee at the University of Texas at Arlington, USA (approval No. A13.008) on January 22, 2013.
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Affiliation(s)
- Dan Lyu
- Department of Pain Management, Tianjin First Center Hospital, Tianjin, China; Department of Psychology, College of Science, University of Texas at Arlington, Arlington, TX, USA
| | - Ning Tang
- Department of Psychology, College of Science, University of Texas at Arlington, Arlington, TX, USA; Reproductive Medicine Center, the 960th Hospital of the PLA Joint Logistics Support Force, Jinan, Shandong Province, China
| | - Andrew W Womack
- Department of Psychology, College of Science, University of Texas at Arlington, Arlington, TX, USA
| | - Yong-Jin He
- Department of Pain Management, Tianjin First Center Hospital, Tianjin, China
| | - Qing Lin
- Department of Psychology, College of Science, University of Texas at Arlington, Arlington, TX, USA
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