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Fan Y, Zhang W, Huang X, Fan M, Shi C, Zhao L, Pi G, Zhang H, Ni S. Senescent-like macrophages mediate angiogenesis for endplate sclerosis via IL-10 secretion in male mice. Nat Commun 2024; 15:2939. [PMID: 38580630 PMCID: PMC10997778 DOI: 10.1038/s41467-024-47317-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 03/25/2024] [Indexed: 04/07/2024] Open
Abstract
Endplate sclerosis is a notable aspect of spine degeneration or aging, but the mechanisms remain unclear. Here, we report that senescent macrophages accumulate in the sclerotic endplates of lumbar spine instability (LSI) or aging male mouse model. Specifically, knockout of cdkn2a (p16) in macrophages abrogates LSI or aging-induced angiogenesis and sclerosis in the endplates. Furthermore, both in vivo and in vitro studies indicate that IL-10 is the primary elevated cytokine of senescence-related secretory phenotype (SASP). Mechanistically, IL-10 increases pSTAT3 in endothelial cells, leading to pSTAT3 directly binding to the promoters of Vegfa, Mmp2, and Pdgfb to encourage their production, resulting in angiogenesis. This study provides information on understanding the link between immune senescence and endplate sclerosis, which might be useful for therapeutic approaches.
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Affiliation(s)
- Yonggang Fan
- Department of Orthopaedics, 1st Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, PR China
| | - Weixin Zhang
- Zhejiang Chinese Medicine University, Hangzhou, 310053, PR China
| | - Xiusheng Huang
- Department of Orthopaedics, 1st Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, PR China
| | - Mingzhe Fan
- Department of Orthopaedics, 1st Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, PR China
| | - Chenhao Shi
- Department of Orthopaedics, 1st Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, PR China
| | - Lantian Zhao
- Department of Orthopaedics, 1st Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, PR China
| | - Guofu Pi
- Department of Orthopaedics, 1st Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, PR China
| | - Huafeng Zhang
- Department of Orthopaedics, 1st Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, PR China
| | - Shuangfei Ni
- Department of Orthopaedics, 1st Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, PR China.
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2
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Wen X, Wu P, Li F, Pi G. Study on the relationship between tea polyphenols alleviating osteoporosis and the changes of microorganism-metabolite-intestinal barrier. Microb Pathog 2024; 188:106564. [PMID: 38307369 DOI: 10.1016/j.micpath.2024.106564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/04/2024]
Abstract
Tea polyphenols are known to alleviate osteoporosis; however, the role of intestinal flora in this process has not been studied. This research employed 16s rRNA sequencing and non-targeted metabonomics to investigate the potential link between osteoporosis mitigation and changes in intestinal flora. MicroCT and tissue staining results demonstrated that tea polyphenols improved bone microstructure, modulated bone metabolism, and significantly alleviated osteoporosis. The administration of tea polyphenols led to alterations in the intestinal flora's composition, marked by increased abundance of Firmicutes and Lactobacillus and decreased prevalence of Bacteroidetes and Bacteroides. Concurrently, the levels of serum metabolites such as Spermidine and 5,6-Dihydrouracil, associated with intestinal microorganisms, underwent significant changes. These variations in intestinal flora and metabolites are closely linked to bone metabolism. Furthermore, tea polyphenols partially repaired intestinal barrier damage, potentially due to shifts in intestinal flora and their metabolites. Overall, our findings suggest that tea polyphenol intervention modifies the intestinal flora and serum metabolites in osteoporotic mice, which could contribute to the repair of intestinal barrier damage and thereby mitigate osteoporosis. This discovery aids in elucidating the mechanism behind tea polyphenols' osteoporosis-relieving effects.
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Affiliation(s)
- Xin Wen
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
| | - Panyang Wu
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
| | - Feng Li
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
| | - Guofu Pi
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
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3
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Han G, Bi J, Ma J, Yuan M, Li Y, Pi G, Li Y, Hu D. 146P Stereotactic body radiotherapy plus anlotinib ± toripalimab in untreated oligometastatic brain metastases NSCLC patients. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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4
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Li F, Xu Z, Xie Z, Sun X, Li C, Chen Y, Xu J, Pi G. Adipose mesenchymal stem cells-derived exosomes alleviate osteoarthritis by transporting microRNA -376c-3p and targeting the WNT-beta-catenin signaling axis. Apoptosis 2022; 28:362-378. [PMID: 36396777 DOI: 10.1007/s10495-022-01787-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2022] [Indexed: 11/18/2022]
Abstract
Osteoarthritis (OA), one of the major diseases afflicting the elderly, is a type of degenerative joint disease related to cartilage and synovium. This study aimed to clarify the role and mechanism of adipose mesenchymal stem cell (ADSC)-derived exosomes (Exos) in OA-induced chondrocyte degradation and synovial hyperplasia, thus improving the quality of life of patients. The rat OA model, chondrocytes, synovial fibroblast models and immunofluorescence were applied to observe the in vivo and in vitro functions of human ADSC (hADSC)-derived Exos in OA and its possible regulatory signaling pathways. Bioinformatics software and luciferase reporter assay were carried out to verify the mechanism of microRNA-376c-3p (miR-376c-3p) in hADSC-derived Exos in OA in vitro. Moreover, Safranine O-Fast Green Cartilage staining, Masson staining, immunohistochemistry and immunofluorescence were conducted to verify the role of miR-376c-3p in hADSC-derived Exos in OA in vivo. hADSC-derived Exos mitigated OA-induced chondrocyte degradation and synovial fibrosis both in vivo and in vitro models by repressing the WNT-beta-catenin signaling pathway. For the mechanism exploration in vitro, miR-376c-3p was raised in hADSC-derived Exos and mediated the fibrosis of synovial fibroblasts in OA, and miR-376c-3p targeted the 3'-untranslated region of WNT3 or WNT9a. Meanwhile, the in vivo experiments also corroborated that the miR-376c-3p in hADSC-derived Exos mitigated OA-induced chondrocyte degradation and synovial fibrosis. MiR-376c-3p in hADSC-derived Exos repressed the WNT-beta-catenin pathway by targeting WNT3 or WNT9a, and then mitigating OA-induced chondrocyte degradation and synovial fibrosis, thereby providing theoretical basis for clinical implementation of treatment.
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Affiliation(s)
- Feng Li
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou, 450052, Henan, People's Republic of China.
| | - Zhiming Xu
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou, 450052, Henan, People's Republic of China
| | - Zheng Xie
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou, 450052, Henan, People's Republic of China
| | - Xing Sun
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou, 450052, Henan, People's Republic of China
| | - Chengxiang Li
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou, 450052, Henan, People's Republic of China
| | - Yangyang Chen
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou, 450052, Henan, People's Republic of China
| | - Jianzhong Xu
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou, 450052, Henan, People's Republic of China.
| | - Guofu Pi
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou, 450052, Henan, People's Republic of China.
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Wei Z, Li F, Pi G. Association Between Gut Microbiota and Osteoarthritis: A Review of Evidence for Potential Mechanisms and Therapeutics. Front Cell Infect Microbiol 2022; 12:812596. [PMID: 35372125 PMCID: PMC8966131 DOI: 10.3389/fcimb.2022.812596] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 02/24/2022] [Indexed: 12/12/2022] Open
Abstract
Osteoarthritis (OA) is a multifactorial joint disease characterized by degeneration of articular cartilage, which leads to joints pain, disability and reduced quality of life in patients with OA. Interpreting the potential mechanisms underlying OA pathogenesis is crucial to the development of new disease modifying treatments. Although multiple factors contribute to the initiation and progression of OA, gut microbiota has gradually been regarded as an important pathogenic factor in the development of OA. Gut microbiota can be regarded as a multifunctional “organ”, closely related to a series of immune, metabolic and neurological functions. This review summarized research evidences supporting the correlation between gut microbiota and OA, and interpreted the potential mechanisms underlying the correlation from four aspects: immune system, metabolism, gut-brain axis and gut microbiota modulation. Future research should focus on whether there are specific gut microbiota composition or even specific pathogens and the corresponding signaling pathways that contribute to the initiation and progression of OA, and validate the potential of targeting gut microbiota for the treatment of patients with OA.
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Affiliation(s)
| | - Feng Li
- *Correspondence: Feng Li, ; Guofu Pi,
| | - Guofu Pi
- *Correspondence: Feng Li, ; Guofu Pi,
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Han G, Bi J, Ma J, Yuan M, Li Y, Pi G, Guo L, Li Y, Hu D. 115TiP Stereotactic body radiotherapy (SBRT) plus anlotinib with or without toripalimab in driver mutation-negative non-small cell lung cancer (NSCLC) patients with untreated brain oligometastatic metastases: A prospective, single-center, phase Ib study. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.10.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Abstract
Intestinal flora located within the intestinal tract comprises a large number of cells, which are referred to as the second gene pool of the human body and form a complex symbiotic relationship with the host. The knowledge of the complex interaction between the intestinal flora and various life activities of the host is a novel and rapidly expanding field. Recently, many studies are being conducted on the relationship between the intestinal flora and bone homeostasis and indicate that the intestinal flora can regulate bone homeostasis via the host immune, metabolic, and endocrine systems. What’s more, based on several clinical and preclinical pieces of evidence, changing the composition and function of the host intestinal flora through the application of probiotics, prebiotics, and fecal microbiota transplantation is being considered to be a potential novel target for the regulation of bone homeostasis. Here, we searched relevant literature and reviewed the role of the intestinal flora in the regulation of bone homeostasis and its modulating interventions.
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Affiliation(s)
- Chengxiang Li
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Guofu Pi
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Feng Li
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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8
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Xu Z, Xie Z, Sun J, Huang S, Chen Y, Li C, Sun X, Xia B, Tian L, Guo C, Li F, Pi G. Gut Microbiome Reveals Specific Dysbiosis in Primary Osteoporosis. Front Cell Infect Microbiol 2020; 10:160. [PMID: 32373553 PMCID: PMC7186314 DOI: 10.3389/fcimb.2020.00160] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 03/25/2020] [Indexed: 12/14/2022] Open
Abstract
Object: Primary osteoporosis (PO) is the most common bone disease, which is characterized by decreased bone mass, damage of bone tissue microstructure, increased bone fragility, and is prone to fracture. Gut microbiome may be involved in bone metabolism of PO through gut-brain axis regulation of immune system and endocrine system, however, the specific mechanism is still unclear. The purpose of this study was to characterize the gut microbiome of patients with PO and its possible role in the occurrence and development of the disease. Methods: Fecal samples were collected from 48 PO patients and 48 healthy controls (HC). The composition of gut microbiome community was analyzed by 16s rDNA amplification sequencing, and the difference of gut microbiome composition between PO patients and HC individuals was compared. PICRUSt was also used to predict the biological function of gut microbiome in patients with PO, and to explore its possible role in the occurrence and development of this disease. The classification model is constructed by random forest algorithm so as to screen the key biomarkers. Result: The diversity of gut microorganisms in PO patients was significantly higher than that in HC group (p < 0.05) and there was significant difference in microbial composition in PO group. The abundance of Dialister (0.036 vs. 0.004, p < 0.001) and Faecalibacterium (0.331 vs. 0.132, p < 0.001) were significantly enriched which were the key flora related to PO. Although no significant correlation between bone mineral density and the richness of microbial communities are found, PICRUST results show that there are a wide range of potential pathways between gut microbiome and PO patients, including genetic information processing, metabolism, environmental information processing, cellular processes, human diseases, and organic systems. Notably, the discriminant model based on dominant microflora can effectively distinguish PO from HC (AUC = 93.56). Conclusions: The findings show that PO is related to the change of gut microbiome, especially the enriched Dialister and Faecalibacterium genera, which give new clues to understand the disease and provide markers for the diagnosis and new strategies for intervention treatment of the disease.
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Affiliation(s)
- Zhiming Xu
- Department of Orthopaedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Zheng Xie
- Department of Orthopaedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Jianguang Sun
- Department of Orthopaedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Shilei Huang
- Department of Orthopaedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Yangyang Chen
- Department of Orthopaedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Chengxiang Li
- Department of Orthopaedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Xing Sun
- Department of Orthopaedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Bicheng Xia
- Department of Orthopaedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Lingyang Tian
- Department of Orthopaedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Caijuan Guo
- Department of Orthopaedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Feng Li
- Department of Orthopaedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Guofu Pi
- Department of Orthopaedics, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
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Luo C, Lei M, Zhang Y, Zhang Q, Li L, Lian J, Liu S, Wang L, Pi G, Zhang Y. Systematic construction and validation of an immune prognostic model for lung adenocarcinoma. J Cell Mol Med 2019; 24:1233-1244. [PMID: 31779055 PMCID: PMC6991688 DOI: 10.1111/jcmm.14719] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 08/16/2019] [Accepted: 09/06/2019] [Indexed: 02/06/2023] Open
Abstract
Lung adenocarcinoma (LUAD), the most common non‐small‐cell lung cancer, is characterized by a dense lymphocytic infiltrate, which indicates that the immune system plays an active role in the development and growth of this cancer. However, no investigations to date have proposed robust models for predicting survival outcome for patients with LUAD in terms of tumour immunology. A total of 761 LUAD patients were included in this study, in which the database of The Cancer Genome Atlas (TCGA) was utilized for discovery, and the Gene Expression Omnibus (GEO) database was utilized for validation. Bioinformatics analysis and R language tools were utilized to construct an immune prognostic model and annotate biological functions. Lung adenocarcinoma showed a weakened immune phenotype compared with adjacent normal tissues. Immune‐related gene sets were profiled, an immune prognostic model based on 2 immune genes (ANLN and F2) was developed with the TCGA database to distinguish cases as having a low or high risk of unfavourable prognosis, and the model was verified with the GEO database. The model was prognostically significant in stratified cohorts, including stage I‐II, stage III‐IV and epidermal growth factor receptor (EGFR) mutant subsets, and was considered to be an independent prognostic factor for LUAD. Furthermore, the low‐ and high‐risk groups showed marked differences in tumour‐infiltrating leucocytes, tumour mutation burden, aneuploidy and PD‐L1 expression. In conclusion, an immune prognostic model was proposed for LUAD that is capable of independently identifying patients at high risk for poor survival, suggesting a relationship between local immune status and prognosis.
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Affiliation(s)
- Chenghan Luo
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Orthopedics Department, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Mengyuan Lei
- Physical Examination Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yixia Zhang
- Neonatal Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Qian Zhang
- Neonatal Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Lifeng Li
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jingyao Lian
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shasha Liu
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Liping Wang
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Guofu Pi
- Orthopedics Department, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yi Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory for Tumor Immunology and Biotherapy, Zhengzhou, China
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Ma Z, Huang S, Sun J, Li F, Sun J, Pi G. Risk factors for upper adjacent segment degeneration after multi-level posterior lumbar spinal fusion surgery. J Orthop Surg Res 2019; 14:89. [PMID: 30922408 PMCID: PMC6437868 DOI: 10.1186/s13018-019-1126-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 03/11/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Posterior lumbar spinal fusion has been widely used in degenerative lumbar stenosis, but adjacent segment degeneration (ASD) was common. Researchers have found many risk factors for ASD after one or two levels of surgery, but few clinical studies focused on multi-level surgery. The purpose of this study was to clarify risk factors for upper ASD after multi-level posterior lumbar spinal fusion. METHODS A retrospective study was performed on the clinical data of 71 patients with degenerative lumbar stenosis who underwent multi-level (at least 3 levels) posterior lumbar spinal fusion from January 2013 to December 2016. Two groups were divided according to lamina and posterior ligamentous complex (PLC) maintenance of proximal fixed vertebrae in surgery. In the 22 patients of group A, the proximal fixed vertebral lamina and PLC were not resected, and in the 49 patients of group B, the proximal fixed vertebral lamina and PLC were resected completely. Age, sex, body mass index (BMI), number of fixed vertebrae and fused levels, spinopelvic parameters, coronal Cobb angle, and modified Pfirrmann grading system were measured for each patient. A Cox proportional hazards model was used to analyze risk factors for upper ASD. RESULTS No symptomatic ASD was found during the follow-up period. Patients who underwent proximal fixed vertebral lamina and PLC resection had a significantly higher percentage of radiographic ASD (P = 0.042). The Cox proportional hazards model showed that age, sex, BMI, preoperative lumbar lordosis, sacral slope, pelvic tilt, coronal Cobb angle, number of fixed vertebrae, and interbody fusion levels had no significant differences for radiographic ASD. But a preoperative modified Pfirrmann grade higher than 3, a high degree of preoperative pelvic incidence, and more decompressed levels had statistical significance (P = 0.024, 0.041, and 0.008, respectively). CONCLUSIONS A preoperative modified Pfirrmann grade higher than 3, a high degree of preoperative pelvic incidence, and more decompressed levels might be risk factors for upper radiographic ASD after multi-level posterior lumbar spinal fusion surgery.
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Affiliation(s)
- Zhaoxin Ma
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Shilei Huang
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Jianguang Sun
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Feng Li
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Jianhao Sun
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Guofu Pi
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, No.1 Jianshe East Road, Zhengzhou, 450052, Henan, China.
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Li F, Du Y, Pi G, Lei B. Long-term real-time tracking live stem cells/cancer cells in vitro/in vivo through highly biocompatible photoluminescent poly(citrate-siloxane) nanoparticles. Materials Science and Engineering: C 2018; 93:380-389. [DOI: 10.1016/j.msec.2018.08.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 06/05/2018] [Accepted: 08/05/2018] [Indexed: 01/27/2023]
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12
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WU Y, Zhou X, Xu H, Li Y, Wei W, Wei X, Yuan Z, Qian Y, Hu L, Zhou Y, Xie T, Li Y, Pi G, He H, Li L, HU D. The Efficacy and Safety of Raltitrexed-Cisplatin in Chemoradiotherapy for Patients with Locally Advanced Nasopharyngeal Carcinoma (LA-NPC). Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Li F, Su Y, Pi G, Ma PX, Lei B. Biodegradable, Biomimetic Elastomeric, Photoluminescent, and Broad-Spectrum Antibacterial Polycitrate-Polypeptide-based Membrane toward Multifunctional Biomedical Implants. ACS Biomater Sci Eng 2018; 4:3027-3035. [DOI: 10.1021/acsbiomaterials.8b00660] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Feng Li
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Yajuan Su
- Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
| | - Guofu Pi
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Peter X. Ma
- Department of Biomedical Engineering, Macromolecular Science and Engineering Center, University of Michigan, Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - Bo Lei
- Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
- State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710054, China
- State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710054, China
- Instrument Analysis Center, Xi’an Jiaotong University, Xi’an 710054, China
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14
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Li F, Wang M, Pi G, Lei B. Europium Doped Monodispersed Bioactive Glass Nanoparticles Regulate the Osteogenic Differentiation of Human Marrow Mesenchymal Stem Cells. J Biomed Nanotechnol 2018; 14:756-764. [DOI: 10.1166/jbn.2018.2504] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Li F, Sun J, Huang S, Su G, Pi G. LncRNA GAS5 Overexpression Reverses LPS-Induced Inflammatory Injury and Apoptosis Through Up-Regulating KLF2 Expression in ATDC5 Chondrocytes. Cell Physiol Biochem 2018; 45:1241-1251. [DOI: 10.1159/000487455] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 10/13/2017] [Indexed: 11/19/2022] Open
Abstract
Background/Aims: Osteoarthritis (OA) is the most frequently occurring joint disease and characterized by degeneration of cartilage. As the unique cell type in cartilage, chondrocytes play a crucial role during OA. Our study explored the influence of long non-coding RNA (lncRNA) growth arrest-specific transcript 5 (GAS5) on lipopolysaccharides (LPS)-induced injury in ATDC5 cells. Methods: Cell viability, apoptosis and expression of inflammatory cytokines were all assessed to evaluate LPS-induce inflammatory injury. Expression of GAS5 in LPS-induced cells was evaluated by qRT-PCR. After cell transfection, effect of abnormally expressed GAS5 on LPS-induced inflammatory injury was determined. Then, the possible target of GAS5 was screened by bioinformatics and verified by qRT-PCR and luciferase activity assay. Together, whether aberrant expression of target gene affected the modulation of GAS5 in LPS-induced inflammatory injury was also assessed. Finally, the influences of aberrant expressed Kruppel-like factor 2 (KLF2) on nuclear factor κB (NF-κB) and Notch pathways were detected by Western blot analysis. Results: LPS reduced cell viability and promoted cell apoptosis and secretion of inflammatory cytokines, along with down-regulation of GAS5. LPS-induced injury was alleviated by GAS5 overexpression while was exacerbated by GAS5 silence. KLF2 was predicted and verified as a target of GAS5, and GAS5 functioned through regulating expression of KLF2. Besides, aberrant expression of KLF2 regulated expressions of key kinases involved in the NF-κB and Notch pathways. Conclusion: GAS5 might ameliorate LPS-induced inflammatory injury in ATDC5 chondrocytes by inhibiting the NF-κB and Notch signaling pathways.
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Han Y, Sun J, Luo C, Huang S, Li L, Ji X, Duan X, Wang Z, Pi G. Comparison of pedicle screw–based dynamic stabilization and fusion surgery in the treatment of radiographic adjacent-segment degeneration: a retrospective analysis of single L5–S1 degenerative spondylosis covering 4 years. J Neurosurg Spine 2016; 25:706-712. [DOI: 10.3171/2016.4.spine1679] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE
Pedicle screw–based dynamic spinal stabilization systems (PDSs) were devised to decrease, theoretically, the risk of long-term complications such as adjacent-segment degeneration (ASD) after lumbar fusion surgery. However, to date, there have been few studies that fully proved that a PDS can reduce the risk of ASD. The purpose of this study was to examine whether a PDS can influence the incidence of ASD and to discuss the surgical coping strategy for L5–S1 segmental spondylosis with preexisting L4–5 degeneration with no related symptoms or signs.
METHODS
This study retrospectively compared 62 cases of L5–S1 segmental spondylosis in patients who underwent posterior lumbar interbody fusion (n = 31) or K-Rod dynamic stabilization (n = 31) with a minimum of 4 years' follow-up. The authors measured the intervertebral heights and spinopelvic parameters on standing lateral radiographs and evaluated preexisting ASD on preoperative MR images using the modified Pfirrmann grading system. Radiographic ASD was evaluated according to the results of radiography during follow-up.
RESULTS
All 62 patients achieved remission of their neurological symptoms without surgical complications. The Kaplan-Meier curve and Cox proportional-hazards model showed no statistically significant differences between the 2 surgical groups in the incidence of radiographic ASD (p > 0.05). In contrast, the incidence of radiographic ASD was 8.75 times (95% CI 1.955–39.140; p = 0.005) higher in the patients with a preoperative modified Pfirrmann grade higher than 3 than it was in patients with a modified Pfirrmann grade of 3 or lower. In addition, no statistical significance was found for other risk factors such as age, sex, and spinopelvic parameters.
CONCLUSIONS
Pedicle screw–based dynamic spinal stabilization systems were not found to be superior to posterior lumbar interbody fusion in preventing radiographic ASD (L4–5) during the midterm follow-up. Preexisting ASD with a modified Pfirrmann grade higher than 3 was a risk factor for radiographic ASD. In the treatment of degenerative diseases of the lumbosacral spine, the authors found that both of these methods are feasible. Also, the authors believe that no extra treatment, other than observation, is needed for preexisting degeneration in L4–5 without any clinical symptoms or signs.
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Affiliation(s)
- Shengli Ma
- Department of Orthopedics; The First Affiliated Hospital of Zhengzhou University; Zhengzhou China
| | - Tao Wu
- Department of Orthopedics; The First Affiliated Hospital of Zhengzhou University; Zhengzhou China
- Department of Cerebrovascular Interventional Radiology; The First Affiliated Hospital of Henan University; Kaifeng China
| | - Guofu Pi
- Department of Orthopedics; The First Affiliated Hospital of Zhengzhou University; Zhengzhou China
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Pi G, Zúñiga A, Cervera J, Ortiz M. [Prenatal diagnosis of Apert syndrome caused by de novo mutation in FGFR2 gene]. An Pediatr (Barc) 2013; 80:e104-5. [PMID: 24286882 DOI: 10.1016/j.anpedi.2013.09.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 09/04/2013] [Accepted: 09/16/2013] [Indexed: 10/26/2022] Open
Affiliation(s)
- G Pi
- Servicio de Pediatría, Hospital Universitario de la Ribera, Alzira, Valencia, España
| | - A Zúñiga
- Servicio de Genética y Biología Molecular, Hospital Universitario de la Ribera, Alzira, Valencia, España.
| | - J Cervera
- Servicio de Ginecología, Hospital Universitario de la Ribera, Alzira, Valencia, España
| | - M Ortiz
- Servicio de Pediatría, Hospital Universitario de la Ribera, Alzira, Valencia, España
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Xue R, Jia Z, Kong X, Pi G, Ma S, Yang J. Effects of PGE2 EP3/EP4 receptors on bladder dysfunction in mice with experimental autoimmune encephalomyelitis. Am J Physiol Renal Physiol 2013; 305:F1656-62. [PMID: 24154697 DOI: 10.1152/ajprenal.00271.2013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
To investigate the expression of four subtypes of PGE2 E-prostanoid (EP) receptors (EP1-EP4) and the effects of EP3/EP4 on bladder dysfunction in a new neurogenic bladder model induced by experimental autoimmune encephalomyelitis (EAE), the mouse model of EAE was induced using a previously established method, and bladder function in mice with different defined levels of neurological impairment was then examined, including micturition frequencies and voiding weight. Bladders were then harvested for analysis of EP receptor expression by Western blot. Activities of agonists/antagonists of EP3 and EP4 receptors as well as PGE2 were also evaluated at different stages of EAE. The results showed that EAE mice developed profound bladder dysfunction characterized by significantly increased micturition and significantly decreased urine output per micturition. EAE-induced upregulation of EP3 and EP4 receptors in the bladder was accompanied by bladder dysfunction. However, EAE had no significant effect on EP1 and EP2 receptors. Moreover, PGE2 and agonists/antagonists of EP3 and EP4 receptors significantly affected bladder dysfunction in EAE mice. Thus, we believe that EAE mice are useful for investigations of the neurogenic bladder. In addition, EP3 and EP4 receptors play a role in EAE-induced bladder dysfunction, providing us with a new target for the treatment of neurogenic bladders.
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Affiliation(s)
- Rui Xue
- Dept. of Urology, The First Affiliated Hospital of Zhengzhou Univ., No.1 Jian She Dong Ave., Zhengzhou 450002, People's Republic of China.
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20
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Abstract
BACKGROUND Four cardiac hormones synthesized by the same gene, i.e. atrial natriuretic peptide, vessel dilator, long acting natriuretic peptide and kaliuretic peptide, have anticancer effects in vitro. MATERIALS AND METHODS These cardiac hormones were infused subcutaneously for 28 days with weekly fresh hormones at 0.3 nM kg(-1) body weight in athymic mice bearing human squamous cell carcinomas. RESULTS Vessel dilator, atrial natriuretic peptide and kaliuretic peptide each eliminated one in six (17%) of the human squamous cell lung carcinomas. Long-acting natriuretic peptide, although it did not eliminate any of the human squamous cell lung carcinomas did decrease the volume of one carcinoma to only 2% (P < 0.0001) of the untreated carcinomas. The squamous cell lung carcinomas that were not eliminated, with the exception of the one LANP-treated tumour that decreased to only 2% of the volume of the untreated cancers, grew rapidly but their growth velocity compared to controls decreased by 76%, 40%, 38% and 25% in the vessel dilator, atrial natriuretic peptide, kaliuretic peptide and long-acting natriuretic peptide groups respectively (P < 0.05). CONCLUSIONS Three of four cardiac hormones synthesized by the atrial natriuretic peptide gene can eliminate human squamous cell lung carcinomas in athymic mice when treated subcutaneously for 4 weeks. The 4th cardiac hormone, i.e. long-acting natriuretic peptide, decreased the volume of one squamous cell lung carcinoma to 2% of that of untreated animals, suggesting that it, too, has beneficial effects on squamous cell lung cancers.
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Affiliation(s)
- A Lenz
- University of South Florida Cardiac Hormone Center and James A. Haley Veterans Medical Center, Tampa, FL, USA
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21
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Abstract
AIM To evaluate human pulp tissue response following direct pulp capping with a self-etching adhesive: Clearfil SE BOND (SB). METHODOLOGY Forty-five sound teeth from 20 subjects were used. Forty-one teeth had their pulp mechanically exposed at the base of a Class 1 cavity preparation and were divided into two groups: group 1, teeth were capped with SB (n = 21), and group 2, with calcium hydroxide cement (CH) (n = 20). Four teeth were maintained intact as an untreated control group. After 7, 30 and 90 days, respectively, 15 teeth were extracted and processed for light microscopic examination. Pulp healing and bacterial microleakage were assessed by haematoxylin and eosin, Masson trichrome and Brown and Brenn stain techniques. The data were analysed statistically by using the Mann-Whitney U test. RESULTS After the 7-day observation period, the inflammatory reaction in the SB group was slight and significantly less severe than that of the CH group (P < 0.05). After the 30- and 90-day observation periods, the inflammatory reaction was slight in both groups, but specimens with dentine bridge formation in the SB group were significantly less common than those in the CH group (P < 0.05). CONCLUSIONS Clearfil SB had good biocompatibility with human pulp tissue, but its ability to induce reparative dentine was significantly lower than that of calcium hydroxide.
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Affiliation(s)
- Y Lu
- Endodontic Department, Beijing Hospital of Stomatology, Capital University of Medical Science, Beijing, China
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Abstract
Pyomyositis is most commonly caused by Staphylococcus aureus. A 25-month-old child developed infection of the biceps brachialis muscle caused by Streptococcus pneumoniae. The child had no underlying immune or anatomic defect.
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Affiliation(s)
- J R Bretón
- Servicio de Pediatría, Hospital Universitario Dr. Peset, Valencia, Spain
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23
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Zheng W, Pi G, Xu K. [The therapeutic effect of Chinese medicinal herbs on HIV patients]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 1999; 13:291-4. [PMID: 12569768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To study the therapeutic effect of Chinese medicinal herbs on HIV patients. METHODS We adopted the combined Chinese medicinal herbs for treatment, its chief component is to enhance human immunity and the complementary part is suited for lightening the clinical synptoms. The clinical aspects, the CD4, CD8 lymphocyte numbers and the plasma viral load of the patients were compared before and after the treatment. RESULTS Of 28 patients exemined, they all had different degrees of body weight increasing, averagely increased 5.4 kg after treatment. 7 cases having a long-time fever, 4 cases of diarrhea, 2 cases of large scale skin ulcer and 1 case of skin rash all had their synptoms disappeared ofter one month treatment. 10 cases, who had lymph nodes enlargement, after treated five months with Chinese medicinal herbs, 3 of them the swelling lymph nodes disappeared, 7 of them the lymph nodes diminished or decreased in number. CD4 lymphocytes increased in 42.9% and 50.0% patients and viral load decreased in 71.4% and 80.0% patients after two months and five months treatment with Chinese medicinal herbs respectively. Taking clinical symptoms and laboratory indexs into consideration, the total effective rate of Chinese medicinal herbs reached 94.0%. CONCLUSION The Chinese medicinal herbs can obviously improve the clinical symptoms, increase CD4 lymphocytes and decrease serum viral load of the HIV patients, thus provides evidence that the Chinese medicinal herbs can be used for control of HIV infection and treatment of AIDS patients.
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Affiliation(s)
- W Zheng
- Traditional Chinese Medicine Tumor Hospital, Shenzhen 518057
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Zhang S, Pi G, Gu S. [Establishment of hybridomas secreting monoclonal antibodies to HIV-gp41 and HCV-NS3]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 1999; 13:128-9. [PMID: 12569777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To establish the monoclonal antibodies of HIV and HCV for developing serological diagnostic method. METHODS The antigens of HIV gp41 and HCV NS3 expressed from bacteria were mixed to immunize BALB/c mice. The hybridoma cell lines were obtained by fusing SP2/0 myeloma cells with spleen cells from immunized mice. RESULTS Four hybridoma cell lines secreting specific antibodies against gp41 of HIV and six hybridoma cell lines secreting antibodies to NS3 of HCV were obtained. ELISA sandwich method for detection of viral antigens with McAbs was developed. CONCLUSION A quick and convenient method for obtaining McAbs was developed using mixture of different antigens for immunizition of mice. The monoclonal antibodies had high senusitivity and were stably secreted by hybridoma cell lines. This technique is worthy to be popularized.
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Affiliation(s)
- S Zhang
- Institute of Virology, Chinese Academy of Preventive Medicine, Beijing 100052
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25
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Wang G, Pi G, Gu S. [The purification and application of Epstein-Barr virus gp125]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 1998; 12:143-6. [PMID: 12515193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
Epstein-Barr virus (EBV) virion capsid antigen (VCA) gp125 as a diagnostic antigen was expressed in infected cells by recombinant vaccinia virus. The presence of IgA antibody to VCA of EBV was tested by ELISA in sera from nasopharyngeal carcinoma (NPC) patients and normal individuals. The ELISA consisted of three steps involving test serum, mouse monoclonal antibody to human IgA and rabbit anti-mouse IgG. The antibody titers of sera determined by this way correlated well with those by IF. The GMT by ELISA was 12 times higher than that by IF. Furthermore, efforts to develop gold-conjugated immunosorbent assay (GCISA), which is a more sensitive assay for measuring IgA antibody to VCA, has met with initial results.
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Affiliation(s)
- G Wang
- Institute of Virology, Chinese Academy of Preventive Medicine, Beijing 100052
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26
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Wan Z, Pi G, Sun N. [Early diagnosis of nasopharyngeal carcinoma using recombinant antigens expressed in bacteria]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 1998; 12:74-6. [PMID: 12515179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
An enzyme-linked immunosorbent assay(ELISA) was developed by using recombinant purified early antigens, EA-D and EA-R to detect IgA antibodies in sera from nasopharyngeal carcinoma(NPC) patients. 30 sera from NPC patients and 49 sera from normal persons were detected by the developed ELISA. The serum positive rate and antibody titer were compared with immunoenzymatic method(IE) on slide with Raji cells mears. ELISA is more sensitive and specific. The serum positive rate of NPC patients was increased from 70% by IE to 100% by ELISA and 77% of the serum antibody titer reached > or = 1:200. The results show that the expressed recombinant p138 and p54 antigens are effective for detection of EA/IgA antibody in sera from NPC patients and ELISA will be a sensitive, specific and convenient method for early diagnosis of NPC.
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