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Zhang H, Niu JJ, Zhou H, Hu YK, Li WC, Ma JL, Liao XB, Ma KJ, Chen L. 8-oxoguanine DNA glycosylase-1 may serve as biomarker of mechanical asphyxia. Forensic Sci Int 2024; 361:112071. [PMID: 38870577 DOI: 10.1016/j.forsciint.2024.112071] [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: 04/14/2024] [Accepted: 05/26/2024] [Indexed: 06/15/2024]
Abstract
AIM To identify mtDNA and OGG1 as potential biomarker candidates for mechanical asphyxia. METHOD The human tissues are divided into experimental group (hanging and strangulation) and control groups (hemorrhagic shock, brain injury group, and poisoning group). Detected the expression of OGG1 and integrity of mtDNA in cardiac tissue of each group. We used over-OGG1 vector and siRNA-OGG1 transfecting H9C2 cell line to observe the function of OGG1 in hypoxic cells. RESULTS 1. mtDNA integrity decreased in the mechanical asphyxia group, OGG1 expression increased in mechanical asphyxia groups. They can be biomarkers for mechanical asphyxia. 2. OGG1 increased first and decreased in hypoxia-induced H9C2 cells. OGG1 upregulated the TFAM, NRF1, and Bcl2 in hypoxia-induced H9C2. OGG1 downregulated cleaved-Caspase3 in hypoxia-induced H9C2 cells. 3. In the normoxia condition, NAC maintained mtDNA integrity and decreased the mitochondrial membrane potential and amount of ATP. CONCLUSION mtDNA integrity and OGG1 expression can be biomarkers for mechanical asphyxia. OGG1 can maintain mtDNA integrity and maintain the stability of the mitochondrial membrane.
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Affiliation(s)
- Heng Zhang
- Department of Forensic Medicine, School of Basic Medicine, Anhui Medical University, Hefei, China
| | - Jing-Jing Niu
- Department of Forensic Medicine, School of Basic Medicine, Anhui Medical University, Hefei, China
| | - Hao Zhou
- Hefei Public Security Bureau of Anhui Province, Hefei, China
| | - Yi-Kai Hu
- Department of Forensic Medicine, School of Basic Medicine, Fudan University, Shanghai, China
| | - Wen-Can Li
- Pudong Branch of Shanghai Municipal Public Security Bureau, Shanghai, China
| | - Jian-Long Ma
- Shenzhen Institute of Criminal Science and Technology, Investigation Department of Shenzhen Public Security Bureau, Key Laboratory of Forensic Pathology, Ministry of Public Security, Shenzhen, China
| | - Xin-Biao Liao
- Criminal Technology Center of Guangdong Provincial Public Security Department, Guangzhou, China.
| | - Kai-Jun Ma
- Shanghai Public Security Bureau, Shanghai, China.
| | - Long Chen
- Department of Forensic Medicine, School of Basic Medicine, Fudan University, Shanghai, China.
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Leifsdottir K, Jost K, Siljehav V, Thelin EP, Lassarén P, Nilsson P, Haraldsson Á, Eksborg S, Herlenius E. The cerebrospinal fluid proteome of preterm infants predicts neurodevelopmental outcome. Front Pediatr 2022; 10:921444. [PMID: 35928685 PMCID: PMC9343678 DOI: 10.3389/fped.2022.921444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 06/29/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Survival rate increases for preterm infants, but long-term neurodevelopmental outcome predictors are lacking. Our primary aim was to determine whether a specific proteomic profile in cerebrospinal fluid (CSF) of preterm infants differs from that of term infants and to identify novel biomarkers of neurodevelopmental outcome in preterm infants. METHODS Twenty-seven preterm infants with median gestational age 27 w + 4 d and ten full-term infants were enrolled prospectively. Protein profiling of CSF were performed utilizing an antibody suspension bead array. The relative levels of 178 unique brain derived proteins and inflammatory mediators, selected from the Human Protein Atlas, were measured. RESULTS The CSF protein profile of preterm infants differed from that of term infants. Increased levels of brain specific proteins that are associated with neurodevelopment and neuroinflammatory pathways made up a distinct protein profile in the preterm infants. The most significant differences were seen in proteins involved in neurodevelopmental regulation and synaptic plasticity, as well as components of the innate immune system. Several proteins correlated with favorable outcome in preterm infants at 18-24 months corrected age. Among the proteins that provided strong predictors of outcome were vascular endothelial growth factor C, Neurocan core protein and seizure protein 6, all highly important in normal brain development. CONCLUSION Our data suggest a vulnerability of the preterm brain to postnatal events and that alterations in protein levels may contribute to unfavorable neurodevelopmental outcome.
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Affiliation(s)
- Kristin Leifsdottir
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden.,The Children's Hospital of Iceland, Reykjavik, Iceland
| | - Kerstin Jost
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Veronica Siljehav
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Eric P Thelin
- Department of Neurology, Karolinska University Hospital, Stockholm, Sweden.,Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Philipp Lassarén
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Peter Nilsson
- SciLifeLab, Department of Protein Science, KTH Royal Institute of Technology, Solna, Sweden
| | | | - Staffan Eksborg
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Eric Herlenius
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
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