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Chen L, Guo P, Zhai L, Yu L, Zhu D, Hu X, Li Z, Chen Y, Sun Q, Sun L, Luo H, Tang H. Nrf2 affects DNA damage repair and cell apoptosis through regulating HR and the intrinsic Caspase-dependent apoptosis pathway in TK6 cells exposed to hydroquinone. Toxicol In Vitro 2024; 100:105901. [PMID: 39029599 DOI: 10.1016/j.tiv.2024.105901] [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: 12/27/2023] [Revised: 06/28/2024] [Accepted: 07/15/2024] [Indexed: 07/21/2024]
Abstract
Hydroquinone (HQ) is one of benzene metabolites that can cause oxidative stress damage and Homologous recombination repair (HR). A good deal of reactive oxygen species (ROS) generated by oxidative stress can trigger apoptotic signaling pathways. The nuclear factor erythroid 2-related factor 2 (Nrf2) can regulate the cell response to oxidative stress damage. The aim of this study was to explore whether Nrf2 participate in HQ-induced apoptosis and its mechanism. The findings displayed that HQ triggered HR, promoted Nrf2 transfer into the cell nucleus and induced cell apoptosis, while Nrf2 deficient elevated cell apoptosis, attenuated the expression of PARP1 and RAD51. We also observed that Nrf2 deficient triggered Caspase-9. Thus, we speculated that Nrf2 might participate in HQ-induced cell apoptosis through Caspase-9 dependent pathways. Meanwhile, Nrf2 participated in HQ-induced DNA damage repair by regulating the level of PARP1 and RAD51.
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Affiliation(s)
- Lin Chen
- Dongguan Key Laboratory of Environmental Medicine, The First Dongguan Affiliated Hospital, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Pu Guo
- Dongguan Key Laboratory of Environmental Medicine, The First Dongguan Affiliated Hospital, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Lu Zhai
- Dongguan Key Laboratory of Environmental Medicine, The First Dongguan Affiliated Hospital, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Lingxue Yu
- Dongguan Key Laboratory of Environmental Medicine, The First Dongguan Affiliated Hospital, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Delong Zhu
- Dongguan Key Laboratory of Environmental Medicine, The First Dongguan Affiliated Hospital, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Xiaoyi Hu
- Dongguan Key Laboratory of Environmental Medicine, The First Dongguan Affiliated Hospital, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Zhuanzhuan Li
- Dongguan Key Laboratory of Environmental Medicine, The First Dongguan Affiliated Hospital, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Yuting Chen
- Dongguan Key Laboratory of Environmental Medicine, The First Dongguan Affiliated Hospital, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Qian Sun
- Dongguan Key Laboratory of Environmental Medicine, The First Dongguan Affiliated Hospital, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Lei Sun
- Dongguan Key Laboratory of Environmental Medicine, The First Dongguan Affiliated Hospital, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Hao Luo
- Dongguan Key Laboratory of Environmental Medicine, The First Dongguan Affiliated Hospital, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Huanwen Tang
- Dongguan Key Laboratory of Environmental Medicine, The First Dongguan Affiliated Hospital, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
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Liu N, Liu G, Li Q, Hu Y, Wang H. Effects on Iron Metabolism and System Xc- /GPX4 Pathway from Hydroquinone Suggest Ferroptosis of Jurkat Cells. TOXICS 2024; 12:644. [PMID: 39330572 PMCID: PMC11436165 DOI: 10.3390/toxics12090644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 08/23/2024] [Accepted: 08/25/2024] [Indexed: 09/28/2024]
Abstract
Prolonged exposure to hydroquinone (HQ), a metabolite of benzene, can cause severe haematologic disorders in humans. However, the mechanism is still unclear. In the present study, we investigated whether HQ can induce haematological diseases through ferroptosis, which is another form of cell death apart from apoptosis. The results showed that HQ inhibited the viability of Jurkat cells in a dose-dependent and time-dependent manner. The half inhibitory concentrations (IC50s) of HQ-treated Jurkat cells for 12 h, 24 h and 48 h were 107.16 μmol/L, 33.29 μmol/L, and 14.78 μmol/L. The exposure of Jurkat cells to HQ increased intracellular Fe2+, malondialdehyde (MDA) and lipid reactive oxygen species (ROS) levels and down-regulated glutathione (GSH) levels. We used erastin-treated cells as a positive control and cells treated with HQ combined with deferoxamine mesylate (DFO) and ferrostain-1 (Fer-1)-treated cells as the negative controls. DFO and Fer-1 partially restored the degradation of cell viability and GSH content and the accumulation of Fe2+, MDA and lipid ROS caused by HQ. In addition, we found that cellular mitochondria in the HQ-treated group showed a decrease in volume, an increase in the density of the bilayer membrane and a decrease or disappearance of mitochondrial cristae. Changes in the erastin-treated group were similar to those in the HQ-treated group. We inferred that HQ induces ferroptosis in Jurkat cells. Subsequently, we found that HQ up-regulated the levels of transferrin receptor 1 (TFRC) mRNA and protein expression and down-regulated FTH1, SLC7A11 and synthetic substrate of antioxidant enzyme 4 (GPX4) mRNA levels and protein expression levels. However, the exposure of Jurkat cells to HQ with DFO and Fer-1 alleviated these changes. Notably, the activation of TFRC and the inhibition of FTH1 and System Xc- (cystine-glutamate reverse transporter protein) /GPX4 were associated with HQ-induced ferroptosis. These results provide novel insights into how HQ exacerbates haematopoietic cytotoxicity and provide potential targets for the prevention of HQ-induced diseases.
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Affiliation(s)
- Nana Liu
- Department of Occupational and Environmental Health, School of Public Health, Wuhan University, Wuhan 430071, China (Q.L.); (Y.H.)
| | - Ge Liu
- Wuhan Center for Disease Control & Prevention, Wuhan 430000, China;
| | - Qiang Li
- Department of Occupational and Environmental Health, School of Public Health, Wuhan University, Wuhan 430071, China (Q.L.); (Y.H.)
| | - Yipeng Hu
- Department of Occupational and Environmental Health, School of Public Health, Wuhan University, Wuhan 430071, China (Q.L.); (Y.H.)
| | - Hong Wang
- Department of Occupational and Environmental Health, School of Public Health, Wuhan University, Wuhan 430071, China (Q.L.); (Y.H.)
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Wang Y, Wang Z, Guo S, Li Q, Kong Y, Sui A, Ma J, Lu L, Zhao J, Li S. SVHRSP Alleviates Age-Related Cognitive Deficiency by Reducing Oxidative Stress and Neuroinflammation. Antioxidants (Basel) 2024; 13:628. [PMID: 38929067 PMCID: PMC11200511 DOI: 10.3390/antiox13060628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/15/2024] [Accepted: 05/17/2024] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND Our previous studies have shown that scorpion venom heat-resistant synthesized peptide (SVHRSP) induces a significant extension in lifespan and improvements in age-related physiological functions in worms. However, the mechanism underlying the potential anti-aging effects of SVHRSP in mammals remains elusive. METHODS Following SVHRSP treatment in senescence-accelerated mouse resistant 1 (SAMR1) or senescence-accelerated mouse prone 8 (SAMP8) mice, behavioral tests were conducted and brain tissues were collected for morphological analysis, electrophysiology experiments, flow cytometry, and protein or gene expression. The human neuroblastoma cell line (SH-SY5Y) was subjected to H2O2 treatment in cell experiments, aiming to establish a cytotoxic model that mimics cellular senescence. This model was utilized to investigate the regulatory mechanisms underlying oxidative stress and neuroinflammation associated with age-related cognitive impairment mediated by SVHRSP. RESULTS SVHRSP significantly ameliorated age-related cognitive decline, enhanced long-term potentiation, restored synaptic loss, and upregulated the expression of synaptic proteins, therefore indicating an improvement in synaptic plasticity. Moreover, SVHRSP demonstrated a decline in senescent markers, including SA-β-gal enzyme activity, P16, P21, SIRT1, and cell cycle arrest. The underlying mechanisms involve an upregulation of antioxidant enzyme activity and a reduction in oxidative stress-induced damage. Furthermore, SVHRSP regulated the nucleoplasmic distribution of NRF2 through the SIRT1-P53 pathway. Further investigation indicated a reduction in the expression of proinflammatory factors in the brain after SVHRSP treatment. SVHRSP attenuated neuroinflammation by regulating the NF-κB nucleoplasmic distribution and inhibiting microglial and astrocytic activation through the SIRT1-NF-κB pathway. Additionally, SVHRSP significantly augmented Nissl body count while suppressing neuronal loss. CONCLUSION SVHRSP could remarkably improve cognitive deficiency by inhibiting oxidative stress and neuroinflammation, thus representing an effective strategy to improve brain health.
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Affiliation(s)
- Yingzi Wang
- Department of Physiology, College of Basic Medical Sciences, Liaoning Provincial Key Laboratory of Cerebral Diseases, Dalian Medical University, Dalian 116044, China; (Y.W.); (Z.W.); (S.G.); (Q.L.); (Y.K.); (A.S.)
- Department of International Medical Services, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
- National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian 116044, China
| | - Zhenhua Wang
- Department of Physiology, College of Basic Medical Sciences, Liaoning Provincial Key Laboratory of Cerebral Diseases, Dalian Medical University, Dalian 116044, China; (Y.W.); (Z.W.); (S.G.); (Q.L.); (Y.K.); (A.S.)
| | - Songyu Guo
- Department of Physiology, College of Basic Medical Sciences, Liaoning Provincial Key Laboratory of Cerebral Diseases, Dalian Medical University, Dalian 116044, China; (Y.W.); (Z.W.); (S.G.); (Q.L.); (Y.K.); (A.S.)
| | - Qifa Li
- Department of Physiology, College of Basic Medical Sciences, Liaoning Provincial Key Laboratory of Cerebral Diseases, Dalian Medical University, Dalian 116044, China; (Y.W.); (Z.W.); (S.G.); (Q.L.); (Y.K.); (A.S.)
| | - Yue Kong
- Department of Physiology, College of Basic Medical Sciences, Liaoning Provincial Key Laboratory of Cerebral Diseases, Dalian Medical University, Dalian 116044, China; (Y.W.); (Z.W.); (S.G.); (Q.L.); (Y.K.); (A.S.)
| | - Aoran Sui
- Department of Physiology, College of Basic Medical Sciences, Liaoning Provincial Key Laboratory of Cerebral Diseases, Dalian Medical University, Dalian 116044, China; (Y.W.); (Z.W.); (S.G.); (Q.L.); (Y.K.); (A.S.)
| | - Jianmei Ma
- Department of Anatomy, College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China;
| | - Li Lu
- Department of Anatomy, College of Basic Medical Sciences, Shanxi Medical University, Taiyuan 030001, China
| | - Jie Zhao
- National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian 116044, China
| | - Shao Li
- Department of Physiology, College of Basic Medical Sciences, Liaoning Provincial Key Laboratory of Cerebral Diseases, Dalian Medical University, Dalian 116044, China; (Y.W.); (Z.W.); (S.G.); (Q.L.); (Y.K.); (A.S.)
- National-Local Joint Engineering Research Center for Drug-Research and Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian 116044, China
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Dey P, Tewari N, Dutta S, Newman RA, Chaudhuri TK. Oleander attenuates hepatic inflammation in a TLR4-independent manner and by favorable modulation of hepatocellular global metabolome that supports cytoprotection. JOURNAL OF ETHNOPHARMACOLOGY 2024; 323:117717. [PMID: 38181937 DOI: 10.1016/j.jep.2024.117717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 11/21/2023] [Accepted: 01/02/2024] [Indexed: 01/07/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Nerium oleander is used to treat liver-associated chronic metabolic diseases in traditional medicinal systems across the globe. The hepatoprotective effects of oleander are mentioned in Indian and Chinese traditional medicinal literature. AIM OF THE STUDY The present study aimed to investigate the cellular mechanisms behind the hepatoprotective effects of a non-toxic dose of oleander (NO). MATERIALS AND METHODS The hepatoprotective effects of NO were tested against lipopolysaccharide (LPS)-treated HepG2 cells. Oxidative stress response was studied using cellular enzymatic assays, and gene expression was analyzed using qRT-PCR. HepG2 cells were pretreated with TAK-242 (pharmacological inhibitor of TLR4) to decipher the anti-inflammatory mechanisms of NO. Cell-free metabolites were analyzed using GCMS and were subjected to pathway enrichment analysis. RESULTS NO reduced systemic inflammation, serum lipid peroxidation byproducts, and glucose without affecting serum transaminase levels and hepatic histopathological features. NO attenuated the inflammation-induced loss of antioxidant enzyme activities and mRNA expressions of toll-like receptor-4 (TLR4)/nuclear factor κβ (NFκβ)-dependent inflammatory genes. In TAK-242 pretreated cells, LPS was unable to induce inflammatory and oxidative responses. However, NO treatment in TAK-242 pretreated cells with LPS stimulation further reduced the signs of inflammation and improved hepatoprotective activities. A comparative analysis of the intracellular global metabolome from HepG2 cells with and without NO treatment indicated NO-mediated favorable modulation of intracellular metabolic pathways that support cytoprotective activities. CONCLUSION NO protects HepG2 cells from LPS-induced oxidative and inflammatory injury. The hepatoprotective effects of NO are mediated by a TLR4-independent process and through a favorable modulation of the intracellular global metabolome that supports cytoprotection.
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Affiliation(s)
- Priyankar Dey
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, 147004, Punjab, India.
| | - Nisha Tewari
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, 147004, Punjab, India.
| | - Somit Dutta
- Department of Development Biology and Genetics, Indian Institute of Science, Bangalore, 560012, India.
| | - Robert A Newman
- University of Texas MD Anderson Cancer Center, Houston, TX, USA; Phoenix Biotechnology, Inc, San Antonio, TX, USA.
| | - Tapas Kumar Chaudhuri
- Cellular Immunology Laboratory, Department of Zoology, University of North Bengal, Siliguri, India.
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Chen Y, Chen L, Zhu S, Yang H, Ye Z, Wang H, Wu H, Wu Y, Sun Q, Liu X, Liang H, Tang H. Exosomal derived miR-1246 from hydroquinone-transformed cells drives S phase accumulation arrest by targeting cyclin G2 in TK6 cells. Chem Biol Interact 2024; 387:110809. [PMID: 38006958 DOI: 10.1016/j.cbi.2023.110809] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/07/2023] [Accepted: 11/15/2023] [Indexed: 11/27/2023]
Abstract
BACKGROUND Hydroquinone (HQ), a major metabolite of benzene and known hematotoxic carcinogen. MicroRNA 1246 (miR-1246), an oncogene, regulates target genes in carcinogenesis including leukemia. This study investigates the impact of exosomal derived miR-1246 from HQ-transformed (HQ19) cells on cell-to-cell communication in recipient TK6 cells. METHODS RNA sequencing was used to identify differentially expressed exosomal miRNAs in HQ19 cells and its phosphate buffered solution control cells (PBS19), which were then confirmed using qRT-PCR. The impact of exosomal miR-1246 derived from HQ-transformed cells on cell cycle distribution was investigated in recipient TK6 cells. RESULTS RNA sequencing analysis revealed that 34 exosomal miRNAs were upregulated and 158 miRNAs were downregulated in HQ19 cells compared with PBS19 cells. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses predicted that their targets are enriched in cancer development-related pathways, such as MAPK signaling, microRNAs in cancer, apoptosis, PI3K-Akt signaling, cell cycle, Ras signaling, and Chronic myeloid leukemia. Eleven miRNAs were confirmed to have differential expression through qRT-PCR, with 6 upregulated (miR-140-3p, miR-551b-3p, miR-7-5p, miR-1290, miR-92a-3p, and miR-1246) and 5 downregulated (miR-183-5p, miR-26a-5p, miR-30c-5p, miR-205-5p, and miR-99b-3p). Among these, miR-1246 exhibited the highest expression level. HQ exposure resulted in a concentration-dependent increase in miR-1246 levels and decrease Cyclin G2 (CCNG2) levels in TK6 cells. Similarly, exosomes from HQ19 exhibited similar effects as HQ exposure. Dual luciferase reporter gene assays indicated that miR-1246 could band to CCNG2. After HQ exposure, exosomal miR-1246 induced cell cycle arrest at the S phase, elevating the expression of genes like pRb, E2F1, and Cyclin D1 associated with S phase checkpoint. However, silencing miR-1246 caused G2/M-phase arrest. CONCLUSION HQ-transformed cells' exosomal miR-1246 targets CCNG2, regulating TK6 cell cycle arrest, highlighting its potential as a biomarker for HQ-induced malignant transformation.
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Affiliation(s)
- Yuting Chen
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523808, China; Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Lin Chen
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523808, China; Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Shiheng Zhu
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523808, China; Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Hui Yang
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Zhongming Ye
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Huanhuan Wang
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Haipeng Wu
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Yao Wu
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Qian Sun
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Xiaoshan Liu
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Hairong Liang
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Huanwen Tang
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523808, China; Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China.
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Wen F, Yang S, Cai W, Zhao M, Qin L, Jiao Z. Exploring the role of PMEPA1 in gastric cancer. Mol Cell Probes 2023; 72:101931. [PMID: 37683830 DOI: 10.1016/j.mcp.2023.101931] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/04/2023] [Accepted: 09/05/2023] [Indexed: 09/10/2023]
Abstract
Although there are several treatments available for gastric cancer (GC), the prognosis of the disease is still poor due to many factors, such as late diagnosis and tumor heterogeneity. To identify potential therapeutic targets, bioinformatics techniques and clinical sample validation were employed and prostate transmembrane protein androgen induced 1 (PMEPA1) was selected for further study. In the present study, we found that elevated PMEPA1 expression correlates with a worse prognosis and weaker anti-tumor immunity in GC patients. Moreover, our study showed that PMEPA1 not only influences cell proliferation, clone formation, invasion, and migration in vitro, but also plays an important role in GC progression in vivo. Mechanically, PMEPA1 exerts its oncogenic effects through activating the Wnt/β-catenin signaling pathway. Therefore, PMEPA1 is a potential target for treating GC effectively.
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Affiliation(s)
- Fei Wen
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu, 730030, China
| | - Shangyu Yang
- Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, 637000, China
| | - WeiWen Cai
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu, 730030, China
| | - Mengyuan Zhao
- Laboratory Medicine Center, Lanzhou University Second Hospital, Lanzhou, Gansu, 730030, China
| | - Long Qin
- Cuiying Biomedical Research Center, Lanzhou University Second Hospital, Lanzhou, Gansu, 730030, China.
| | - Zuoyi Jiao
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu, 730030, China; Cuiying Biomedical Research Center, Lanzhou University Second Hospital, Lanzhou, Gansu, 730030, China.
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