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Melouli H, Khenchouche A, Taibi-Zidouni F, Salma D, Aoudia N, Djennaoui D, Sahraoui T, Benyahia S, El Kebir FZ. A Distinct Anti-EBV DNase Profile in Patients with Undifferentiated Nasopharyngeal Carcinoma Compared to Classical Antigens. Viruses 2023; 15:2158. [PMID: 38005835 PMCID: PMC10675439 DOI: 10.3390/v15112158] [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: 08/27/2023] [Revised: 09/17/2023] [Accepted: 10/08/2023] [Indexed: 11/26/2023] Open
Abstract
Nasopharyngeal cancer (NPC) is a prevalent type of cancer that often takes the form of undifferentiated carcinoma in the Maghreb region. It affects people of all ages. NPC diagnosis, mainly based on detecting Epstein-Barr virus (EBV), has not been well evaluated in North Africa. We compared the classical EBV serological tests using indirect immunofluorescence to the detection of EBV DNase antibodies by immunoblot in Algerian NPC patients. Significant variations were observed among different age groups of patients regarding the presence of VCA-IgA antibodies (0-14 and ≥30 years old, p < 0.0001; 15-19 and ≥30 years old, p < 0.01) and EA-IgA (0-14 and ≥30 years old, p < 0.01; 15-29 and ≥30 years old, p < 0.05). Differences were also noted in the titers of IgA anti-VCA and anti-EA antibodies across the three age groups. Some patients under the age of 30 with detectable IgG anti-VCA antibodies had undetectable IgA anti-VCA antibodies. These patients had a strong anti-DNase IgA response. However, older individuals had a higher level of anti-DNase IgG. Before treatment, children had strong DNase reactivity as indicated by specific IgA antibodies. Young adults had high IgA anti-DNase response, but the elderly (90.9%) had a lower response for these antibodies. Following therapy, the children retained high levels of IgA anti-DNase antibodies, and 66% of the young adults demonstrated robust antibody reactivity against DNase. In contrast, IgG responses to anti-DNase were low in children. This study demonstrated the utility of anti-DNase responses in the diagnosis and prognosis of NPC.
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Affiliation(s)
- Hamid Melouli
- Viral Oncogenesis Laboratory, Pasteur Institute of Algeria, Algiers 16000, Algeria; (H.M.)
| | - Abdelhalim Khenchouche
- Laboratory of Applied Biochemistry, Ferhat Abbas, Setif 1 University, Setif 19000, Algeria
| | - Fouzia Taibi-Zidouni
- Viral Oncogenesis Laboratory, Pasteur Institute of Algeria, Algiers 16000, Algeria; (H.M.)
| | - Dahmani Salma
- Viral Oncogenesis Laboratory, Pasteur Institute of Algeria, Algiers 16000, Algeria; (H.M.)
| | - Nassim Aoudia
- Viral Oncogenesis Laboratory, Pasteur Institute of Algeria, Algiers 16000, Algeria; (H.M.)
| | - Djamel Djennaoui
- Otorhinolaryngology Department, Mustapha Pacha Hospital, Algiers 16000, Algeria
| | - Tewfik Sahraoui
- Laboratory of Developmental Biology and Differentiation, Es-Sénia University, Oran 31000, Algeria
| | - Samir Benyahia
- Otorhinolaryngology Department, Mustapha Pacha Hospital, Algiers 16000, Algeria
| | - Fatima Zohra El Kebir
- Laboratory of Developmental Biology and Differentiation, Es-Sénia University, Oran 31000, Algeria
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Lian M. Combining Epstein-Barr virus antibodies for early detection of nasopharyngeal carcinoma: A meta-analysis. Auris Nasus Larynx 2023; 50:430-439. [PMID: 36241564 DOI: 10.1016/j.anl.2022.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/21/2022] [Accepted: 09/27/2022] [Indexed: 04/03/2023]
Abstract
OBJECTIVE Epstein-Barr virus-related antibody seromarkers including VCA-IgA, EA-IgA, EBNA1-IgA, and Rta-IgG are used as markers for the detection of nasopharyngeal carcinoma (NPC). This meta-analysis was conducted to evaluate the diagnostic performance of their use in combined assays. METHODS Computerized searching of five electronic databases, supplemented by manual searching methods, was performed to identify pertinent articles. Diagnostic accuracy parameters, including sensitivity, specificity, positive likelihood ratio (PLR), negative likelihood ratio (NLR), diagnostic odds ratio (DOR), and area under the curve (AUC), were calculated with corresponding 95% confidence intervals (CIs). RESULTS Twenty-one studies with 4753 NPC cases and 31875 non-NPC controls were included. The pooled sensitivities for VCA-IgA+EA-IgA, VCA-IgA+EBNA1-IgA, VCA-IgA+Rta-IgG, and VCA-IgA+ EA-IgA+Rta-IgG were 0.89, 0.93, 0.94, and 0.94, respectively. Pooled specificities were 0.89, 0.88, 0.90, and 0.95, respectively. The PLRs were 8.1, 7.6, 9.4, and 17.4, respectively. Pooled NLRs were 0.12, 0.08, 0.07, and 0.07, respectively. Pooled DORs were 66, 95, 135, and 261, respectively. Pooled AUCs were 0.94, 0.96, 0.97, and 0.94, respectively. CONCLUSION These four combined assays based on EBV-related antibodies show diagnostic accuracy. The three-marker assay of VCA-IgA, EA IgA, and Rta-IgG has the best performance. Given the aspect of cost-benefit, VCA-IgA combined with EBNA1-IgA or Rta-IgG could become the preferred serodiagnostic strategy for NPC screening and early diagnosis.
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Affiliation(s)
- Mei Lian
- Department of Otorhinolaryngology, Tianjin Fifth Central Hospital, No.41 Zhejiang Road, Binhai New Area, Tianjin, 300450, China.
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Liao Y, Zhang JB, Lu LX, Jia YJ, Zheng MQ, Debelius JW, He YQ, Wang TM, Deng CM, Tong XT, Xue WQ, Cao LJ, Wu ZY, Yang DW, Zheng XH, Li XZ, Wu YX, Feng L, Ye W, Mu J, Jia WH. Oral Microbiota Alteration and Roles in Epstein-Barr Virus Reactivation in Nasopharyngeal Carcinoma. Microbiol Spectr 2023; 11:e0344822. [PMID: 36645283 PMCID: PMC9927204 DOI: 10.1128/spectrum.03448-22] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 11/16/2022] [Indexed: 01/17/2023] Open
Abstract
Microbiota has recently emerged as a critical factor associated with multiple malignancies. Nasopharyngeal carcinoma (NPC) is highly associated with Epstein-Barr virus (EBV); the oncovirus resides and is transmitted in the oral cavity. However, the alternation of oral microbiota in NPC patients and its potential link to EBV reactivation and host cell response under the simultaneous existence of EBV and specific bacteria is largely unknown. Here, oral microbiota profiles of 303 NPC patients and controls with detailed clinical information, including serum EBV anti-virus capsid antigen (VCA) IgA level, were conducted. A distinct microbial community with lower diversity and imbalanced composition in NPC patients was observed. Notably, among enriched bacteria in patients, Streptococcus sanguinis was associated with anti-VCA IgA, an indicator of NPC risk and EBV reactivation. By measuring the concentration of its metabolite, hydrogen peroxide (H2O2), in the saliva of clinical patients, we found the detection rate of H2O2 was 2-fold increased compared to healthy controls. Further coculture assay of EBV-positive Akata cells with bacteria in vitro showed that S. sanguinis induced EBV lytic activation by its metabolite, H2O2. Host and EBV whole genome-wide transcriptome sequencing and EBV methylation assays showed that H2O2 triggered the host cell signaling pathways, notably tumor necrosis factor alpha (TNF-α) via NF-κB, and induced the demethylation of the global EBV genome and the expression of EBV lytic-associated genes, which could result in an increase of virus particle release and potential favorable events toward tumorigenesis. In brief, our study identified a characterized oral microbial profile in NPC patients and established a robust link between specific oral microbial alteration and switch of latency to lytic EBV infection status in the oral cavity, which provides novel insights into EBV's productive cycle and might help to further clarify the etiology of NPC. IMPORTANCE EBV is classified as the group I human carcinogen and is associated with multiple cancers, including NPC. The interplays between the microbiota and oncovirus in cancer development remain largely unknown. In this study, we investigate the interactions between resident microbes and EBV coexistence in the oral cavity of NPC patients. We identify a distinct oral microbial feature for NPC patients. Among NPC-enriched bacteria, we illustrated that a specific species, S. sanguinis, associated with elevated anti-IgA VCA in patients, induced EBV lytic activation by its by-product, H2O2, and activated the TNF-α/NF-κB pathway of EBV-positive B cells in vitro, together with increased detection rate of H2O2 in patients' oral cavities, which strengthened the evidence of bacteria-virus-host interaction in physiological circumstances. The effects of imbalanced microbiota on the EBV latent-to-lytic switch in the oral cavity might create the likelihood of EBV infection in epithelial cells at the nasopharynx and help malignant transition and cancer development.
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Affiliation(s)
- Ying Liao
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
| | - Jiang-Bo Zhang
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
| | - Li-Xia Lu
- Department of Radiation Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Yi-Jing Jia
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
- School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Mei-Qi Zheng
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
| | - Justine W. Debelius
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Yong-Qiao He
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
| | - Tong-Min Wang
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
| | - Chang-Mi Deng
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
| | - Xia-Ting Tong
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
- School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Wen-Qiong Xue
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
| | - Lian-Jing Cao
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
| | - Zi-Yi Wu
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
| | - Da-Wei Yang
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
- School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Xiao-Hui Zheng
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
| | - Xi-Zhao Li
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
| | - Yan-Xia Wu
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
| | - Lin Feng
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
| | - Weimin Ye
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Jianbing Mu
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, USA
| | - Wei-Hua Jia
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, China
- School of Public Health, Sun Yat-Sen University, Guangzhou, China
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Li Y, Feng Z, Xing S, Liu W, Zhang G. Combination of serum matrix metalloproteinase-3 activity and EBV antibodies improves the diagnostic performance of nasopharyngeal carcinoma. J Cancer 2020; 11:6009-6018. [PMID: 32922541 PMCID: PMC7477409 DOI: 10.7150/jca.46977] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 08/02/2020] [Indexed: 12/11/2022] Open
Abstract
Objective: Nasopharyngeal carcinoma (NPC) is a malignant head and neck tumor that is highly prevalent in Southeast Asia. The two traditional NPC markers VCA-IgA (EBV viral capsid antigen) and EA-IgA (EBV early antigen) are limited in the screening and diagnosis of NPC. The purpose of present study is to evaluate the diagnostic value of matrix metalloproteinase-3 (MMP3) in NPC. Methods: The levels of 23 secretory MMPs in serum samples from 15 healthy controls and 26 NPC patients were detected by Cytokine Antibody Array 2000. Immunohistochemistry, Real-time PCR and western bolt were used to detect MMP3 mRNA and protein levels in NPC tissues and cell lines. The serum protein levels of MMP3 were further measured by ELISA in healthy control individuals (n = 200) and NPC patients (n = 206). Results: MMP3 can be expressed and secreted by both NPC and fibroblast cell lines, suggesting that the higher expression of MMP3 protein in both tumor nests and stromal of NPC tissues may be the source of circulating MMP3 in NPC patients. Furthermore, we found out both MMP3 concentration and enzymatic activity were significantly increased in the NPC group (n = 206) than the healthy control group (n = 200) (P < 0.001). However, serum MMP3 enzymatic activity, but not MMP3 concentration, was significantly associated with the progression of NPC. In addition, serum MMP3 activity was more valuable in diagnosis of NPC than its concentration (0.86 vs. 0.78, AUC), and MMP3 activity can improve the diagnosis of NPC by combining with EBV-infection biomarkers VCA-IgA and EA-IgA with a sensitivity of 91.5% and a specificity of 92.3%. Conclusions: This study suggested the combination of MMP3 activity and EBV antibodies may be a useful biomarker for screening and diagnosis of NPC.
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Affiliation(s)
- Yiqiu Li
- Department of Microbial and Biochemical Pharmacy, School of Pharmaceutical Sciences, Sun Yat-sen University, No.132 Waihuandong Road, University Town, Guangzhou 510006, China
| | - Zhibo Feng
- Department of anatomy, Xinxiang Medical University, Xinxiang, Henan 453700, China
| | - Shan Xing
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Wanli Liu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Ge Zhang
- Department of Microbial and Biochemical Pharmacy, School of Pharmaceutical Sciences, Sun Yat-sen University, No.132 Waihuandong Road, University Town, Guangzhou 510006, China
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5
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Chen H, Zhong Q, Wu X, Ding Y, Chen Q, Xue N, Xu Y, Chen S. Preliminary evaluation of a candidate international reference for Epstein-Barr virus capsid antigen immunoglobulin A in China. Infect Agent Cancer 2020; 15:25. [PMID: 32368250 PMCID: PMC7191735 DOI: 10.1186/s13027-020-00294-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/24/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND The detection of the Epstein-Barr capsid antigen (VCA) immunoglobulin A (IgA) is widely used in the diagnosis of nasopharyngeal carcinoma (NPC), but a reference standard for evaluating the presence of VCA-IgA is not yet available. Therefore, a reference standard is urgently needed for a uniform and quantitative detection of VCA-IgA. METHODS A mixed reference serum from three NPC patients diluted with healthy subject serum was made as a potential first international standard for VCA-IgA. VCA-IgA was detected in twenty NPC patients by four ELISA kits and two chemiluminescent immunoassays kits using the reference as a calibration curve. The performance of these six kits was evaluated, and the quantitative results were compared. RESULTS Our results showed a good linearity of the reference in different kits. Without reference, the difference of the total coefficient of variation (from 3.98 to 43.11%) and Within-run coefficient of variation (from 2.47 to 19.66%) was large in the 6 kits. The positive and negative coincidence rate between the 6 kits and indirect immunofluorescence for NPC diagnosis was 75% overall agreement, but a difference among the six kits was found, ranging from 55 to 90%. The concentration of VCA-IgA in the 20 NPC samples led in the division into three categories such as negative, low, or medium/high positive, but these concentrations were significantly different within these three categories depending on the kit used of the 6 considered. However,a good correlation (R2 = 0.986) was observed between Antu and Beier ELISA kits. CONCLUSIONS The reference serum mightbe used as a reference standard for a better comparison of the results from different kits/laboratories. However, the quantitative results of some kits are still inconsistent due to the diversity of VCA antigens.
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Affiliation(s)
- Hao Chen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060 People’s Republic of China
| | - Qiaohua Zhong
- Department of Clinical Laboratory ,People’s Hospital of Jieyang, Jieyang Hospital Affiliated to SunYat-sen University, Tianfu Road 107, Rongcheng District, Jieyang City, 522000 Guangdong Province People’s Republic of China
| | - Xiaobin Wu
- Department of Laboratory Science, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong, People’s Republic of China
| | - Yanling Ding
- Department of Clinical Laboratory, Liuzhou Maternity and Child Health Care Hospital, Yingshan Road 50th, Chengzhong District, Liuzhou, 545001 People’s Republic of China
| | - Qi Chen
- Department of Clinical Laboratory ,People’s Hospital of Jieyang, Jieyang Hospital Affiliated to SunYat-sen University, Tianfu Road 107, Rongcheng District, Jieyang City, 522000 Guangdong Province People’s Republic of China
| | - Ning Xue
- Department of Clinical Laboratory, Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou, 450100 People’s Republic of China
| | - Yiwei Xu
- Department of clinical laboratory, The cancer hospital of Shantou University Medical college, The Key laboratory of Molecular Biology for high cancer incidence coastal Chaoshan area, Shantou University Medical college, number 22, Xinling road, Shantou, Guangdong 515041 People’s Republic of China
| | - Shulin Chen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060 People’s Republic of China
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Li T, Guo X, Ji M, Li F, Wang H, Cheng W, Chen H, Ng M, Ge S, Yuan Y, Xia N. Establishment and validation of a two-step screening scheme for improved performance of serological screening of nasopharyngeal carcinoma. Cancer Med 2018; 7:1458-1467. [PMID: 29479857 PMCID: PMC5911604 DOI: 10.1002/cam4.1345] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 12/21/2017] [Accepted: 12/26/2017] [Indexed: 12/23/2022] Open
Abstract
Nasopharyngeal carcinoma (NPC), which is closely associated with Epstein-Barr virus (EBV), is one of the most prevalent cancers in southeast China. Most NPC patients are diagnosed at late stage due to inconspicuous symptoms at the early stage, and the prognosis of these patients is poor. The early diagnosis rate of NPC could be significantly increased by serological screening, but the positive predictive value (PPV) is relatively low. A simple two-step serological screening scheme was established to improve the PPV of the screening strategy and was validated by a prospective cohort. Serum antibodies specific for EBNA1, Zta, Thymidine Kinase (TK), EAD, EAR, and VCA were detected by enzyme-linked immunosorbent assay. The combination of EBNA1/IgA and VCA/IgA was used in the first step of screening, and anti-early antigens (EAs) were used in the second step of screening. EAD/IgA was the most prominent marker in the second step of screening, and other anti-EAs were complementary to EAD/IgA. As validated by a prospective cohort including 4200 participants, using the combination of EAD/IgA and TK/IgA in the second step decreased the number of high-risk participants from 128 to 27, and increased the PPV from 4.69% to 18.52%, with only one very early-stage case missed. The two-step screening scheme provides a standardized approach for NPC screening with an improved PPV and may be used in future field studies. With this two-step serological screening method, more people benefit from the screening program without increasing the need for fiberoptic endoscopy.
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Affiliation(s)
- Tingdong Li
- State Key Laboratory of Molecular Vaccinology and Molecular DiagnosticsNational Institute of Diagnostics and Vaccine Development in Infectious DiseasesSchool of Public Health and School of Life ScienceXiamen UniversityXiamenFujianChina
| | - Xiaoyi Guo
- State Key Laboratory of Molecular Vaccinology and Molecular DiagnosticsNational Institute of Diagnostics and Vaccine Development in Infectious DiseasesSchool of Public Health and School of Life ScienceXiamen UniversityXiamenFujianChina
| | - Mingfang Ji
- Cancer Research Institute of Zhongshan CityZhongshanGuangdongChina
| | - Fugui Li
- Cancer Research Institute of Zhongshan CityZhongshanGuangdongChina
| | - Han Wang
- State Key Laboratory of Molecular Vaccinology and Molecular DiagnosticsNational Institute of Diagnostics and Vaccine Development in Infectious DiseasesSchool of Public Health and School of Life ScienceXiamen UniversityXiamenFujianChina
| | - Weimin Cheng
- Cancer Research Institute of Zhongshan CityZhongshanGuangdongChina
| | - Honglin Chen
- State Key Laboratory for Emerging Infectious DiseasesDepartment of MicrobiologyLi Ka Shing, Faculty of MedicineThe University of Hong KongHong Kong SARChina
| | - Munhon Ng
- State Key Laboratory of Molecular Vaccinology and Molecular DiagnosticsNational Institute of Diagnostics and Vaccine Development in Infectious DiseasesSchool of Public Health and School of Life ScienceXiamen UniversityXiamenFujianChina
| | - Shengxiang Ge
- State Key Laboratory of Molecular Vaccinology and Molecular DiagnosticsNational Institute of Diagnostics and Vaccine Development in Infectious DiseasesSchool of Public Health and School of Life ScienceXiamen UniversityXiamenFujianChina
| | - Yong Yuan
- Cancer Research Institute of Zhongshan CityZhongshanGuangdongChina
| | - Ningshao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular DiagnosticsNational Institute of Diagnostics and Vaccine Development in Infectious DiseasesSchool of Public Health and School of Life ScienceXiamen UniversityXiamenFujianChina
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7
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He YQ, Xue WQ, Xu FH, Xu YF, Zhang JB, Yu HL, Feng QS, Chen LZ, Cao SM, Liu Q, Mu J, Zeng YX, Jia WH. The Relationship Between Environmental Factors and the Profile of Epstein-Barr Virus Antibodies in the Lytic and Latent Infection Periods in Healthy Populations from Endemic and Non-Endemic Nasopharyngeal Carcinoma Areas in China. EBioMedicine 2018; 30:184-191. [PMID: 29606628 PMCID: PMC5952216 DOI: 10.1016/j.ebiom.2018.02.019] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 02/09/2018] [Accepted: 02/20/2018] [Indexed: 10/28/2022] Open
Abstract
Our previous study found that smoking was associated with an elevated level of the antibody against VCA in the Epstein-Barr virus (EBV) lytic phase, which was an important predictive marker of the risk of nasopharyngeal carcinoma (NPC). It remained unknown whether environmental factors were associated with the levels of other EBV antibodies, such as Zta-IgA, EA-IgA, EBNA1-IgA, and LMP1-IgA, in the lytic and latent infection periods. We aimed to investigate the possible environmental inducers that could affect EBV antibody levels in two independent healthy male populations from endemic NPC areas in South China (N=1498) and non-endemic NPC areas in North China (N=1961). We performed ELISA and immunoenzymatic assays to test the levels of antibodies specific to the EBV antigens. The seropositive rates of antibodies against the antigens expressed in both the EBV latent and lytic infection periods, namely, LMP1-IgA, EBNA1-IgA, and Zta-IgA, in endemic areas (28.65%, 5.43% and 14.49%, respectively) were significantly higher than those in non-endemic areas (14.43%, 1.07% and 6.32%, respectively). Smoking was associated with higher seropositivity for EBNA1-IgA (OR=1.47, 95% CI=1.12-1.93) and Zta-IgA (OR=1.28, 95% CI=0.99-1.66), with dose-response effects, while not associated with the levels of LMP1-IgA. In conclusion, smoking was an important environmental factor, which associated with increased levels of EBNA1-IgA, and Zta-IgA.
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Affiliation(s)
- Yong-Qiao He
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, China
| | - Wen-Qiong Xue
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, China
| | - Feng-Hua Xu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, China
| | - Ya-Fei Xu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, China; Shenzhen University Health Science Center, Shenzhen, China
| | - Jiang-Bo Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, China
| | - Huan-Lin Yu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, China
| | - Qi-Sheng Feng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, China
| | - Li-Zhen Chen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, China
| | - Su-Mei Cao
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, China
| | - Qing Liu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, China
| | - Jianbing Mu
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, NIH, Rockville, MD, USA
| | - Yi-Xin Zeng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, China
| | - Wei-Hua Jia
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, China; School of Public Health, Sun Yat-Sen University, Guangzhou, China; Cancer Center of Guangzhou Medical University, Guangzhou, China.
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Target-induced proximity ligation triggers recombinase polymerase amplification and transcription-mediated amplification to detect tumor-derived exosomes in nasopharyngeal carcinoma with high sensitivity. Biosens Bioelectron 2017; 102:204-210. [PMID: 29145073 DOI: 10.1016/j.bios.2017.11.033] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 10/29/2017] [Accepted: 11/07/2017] [Indexed: 01/09/2023]
Abstract
Tumor-derived exosomes (TEXs) are extracellular vesicles that are continuously released into the blood by tumor cells and carry specific surface markers of the original tumor cells. Substantial evidence has implicated TEXs as attractive diagnostic markers for cancer. However, the detection of TEXs in blood at an early tumor stage is challenging due to their very low concentration. Here, we established a method called PLA-RPA-TMA assay that allows TEXs to be detected with high sensitivity and specificity. Based on two proximity ligation assay (PLA) probes that recognize a biomarker on a TEX, we generated a unique surrogate DNA signal for the specific biomarker, which was synchronously amplified twice by recombinase polymerase amplification (RPA) coupled with transcription-mediated amplification (TMA), and then the products of the RPA-TMA reaction were quantitatively detected using a gold nanoparticle-based colorimetric assay. We established proof-of-concept evidence for this approach using TEXs from nasopharyngeal carcinoma (NPC) cells, with a detection limit of 102 particles/mL, and reported the measurement of plasma Epstein-Barr virus latent membrane protein 1 (LPM1)-positive (LMP1+, accuracy: 0.956) and epidermal growth factor receptor (EGFR)-positive (EGFR+, accuracy: 0.906) TEXs as potent early diagnostic biomarkers for NPC.
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Chen H, Chen S, Lu J, Wang X, Li J, Li L, Fu J, Scheper T, Meyer W, Peng YH, Liu W. Multiparametric Detection of Antibodies against Different EBV Antigens to Predict Risk for Nasopharyngeal Carcinoma in a High-Risk Population of China. Cancer Prev Res (Phila) 2017; 10:542-550. [PMID: 28754665 DOI: 10.1158/1940-6207.capr-17-0035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 04/20/2017] [Accepted: 07/21/2017] [Indexed: 02/05/2023]
Abstract
In this study, we aimed to use the combined detection of multiple antibodies against Epstein-Barr virus (EBV) antigens to develop a model for screening and diagnosis of nasopharyngeal carcinoma (NPC). Samples of 300 nasopharyngeal carcinoma patients and 494 controls, including 294 healthy subjects (HC), 99 non-nasopharyngeal carcinoma cancer patients (NNPC), and 101 patients with benign nasopharyngeal lesions (BNL), were incubated with the EUROLINE Anti-EBV Profile 2, and band intensities were used to establish a risk prediction model. The nasopharyngeal carcinoma risk probability analysis based on the panel of VCAgp125 IgA, EBNA-1 IgA, EA-D IgA, EBNA-1 IgG, EAD IgG, and VCAp19 IgG displayed the best performance. When using 26.1% as the cutoff point in ROC analysis, the AUC value and sensitivity/specificity were 0.951 and 90.7%/86.2%, respectively, in nasopharyngeal carcinoma and all controls. In nasopharyngeal carcinoma and controls without the non-nasopharyngeal carcinoma and BNL groups, the AUC value and sensitivity/specificity were 0.957 and 90.7%/88.1%, respectively. The diagnostic specificity and sensitivity of the EUROLINE Anti-EBV Profile 2 assay for both nasopharyngeal carcinoma and early-stage nasopharyngeal carcinoma were higher than that of mono-antibody detection by immune-enzymatic assay and real-time PCR (EBV DNA). In the VCA-IgA-negative group, 82.6% of nasopharyngeal carcinoma patients showed high probability for nasopharyngeal carcinoma, and the negative predictive value was 97.1%. In the VCA-IgA-positive group, 73.3% of healthy subjects showed low probability. The positive predictive value reached 98.2% in this group. The nasopharyngeal carcinoma risk probability value determined by the EUROLINE Anti-EBV Profile 2 might be a suitable tool for nasopharyngeal carcinoma screening. Cancer Prev Res; 10(9); 542-50. ©2017 AACR.
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Affiliation(s)
- Hao Chen
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, PR China
| | - Shulin Chen
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, PR China
| | - Jie Lu
- EUROIMMUN Academy, EUROIMMUN Medical Diagnostics (China) Co., Ltd, Beijing, PR China
| | - Xueping Wang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, PR China
| | - Jianpei Li
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, PR China
| | - Linfang Li
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, PR China
| | - Jihuan Fu
- EUROIMMUN Academy, EUROIMMUN Medical Diagnostics (China) Co., Ltd, Beijing, PR China
| | - Thomas Scheper
- Institute of Experimental Immunology, EUROIMMUN AG, Lubeck, Germany
| | - Wolfgang Meyer
- Institute of Experimental Immunology, EUROIMMUN AG, Lubeck, Germany
| | - Yu-Hui Peng
- Department of Clinical Laboratory, The Cancer Hospital of Shantou University Medical College, The Key Laboratory of Molecular Biology for High Cancer Incidence Coastal Chaoshan Area, Shantou University Medical College, Guangdong, China.
| | - Wanli Liu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, PR China.
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Serum EBV EA-IgA and VCA-IgA antibodies can be used for risk group stratification and prognostic prediction in extranodal NK/T cell lymphoma: 24-year experience at a single institution. Ann Hematol 2017; 96:1331-1342. [PMID: 28550598 PMCID: PMC5486802 DOI: 10.1007/s00277-017-3013-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Accepted: 05/02/2017] [Indexed: 12/22/2022]
Abstract
Although extranodal NK/T cell lymphoma (ENKTCL) is consistently associated with Epstein-Barr virus (EBV) infection, the manifestation and prognostic value of serum EBV antibodies still remain unknown. One hundred and forty-one patients with ENKTCL were evaluated for serum EBV EA-IgA and VCA-IgA antibodies levels in the past 24 years in our institution. Their correlation with clinicopathological features, plasma EBV DNA load, and patients’ outcomes was analyzed. EBV EA-IgA ≥1:10 and VCA-IgA ≥1:160 were found in 18.4 and 16.3% of patients, respectively. They correlated with adverse ENKTCL profile and inferior overall survival (OS) and progression-free survival (PFS). EA-IgA ≥1:10 was an independent prognostic factor on OS (RR = 2.276, p = 0.008) and associated with lower complete response (CR) rate (34.8 vs 70.6%, p = 0.001) and higher relapse rate in CR patients (62.5 vs 34.7%, p = 0.016). In subgroup analysis, both EA-IgA ≥1:10 and VCA-IgA ≥1:160 significantly correlated with inferior OS and PFS in patients with stage I/II, IPI score 0–1, plasma EBV DNA (+), and CR. Patients with plasma EBV DNA (+) and EA-IgA ≥1:10 (or VCA-IgA ≥1:160) had significantly shorter periods of OS and PFS in comparison with other corresponding groups. Elevated serum EBV EA-IgA and VCA-IgA levels were related to adverse ENKTCL profile and correlated with poor treatment response, early relapse, and poor prognosis in patients with ENKTCL. These findings provide convincing evidence for the use of serum EBV EA-IgA and VCA-IgA antibodies for risk group stratification and prognostic prediction in ENKTCL.
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11
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Zhang Y, Peng X, Tang Y, Gan X, Wang C, Xie L, Xie X, Gan R, Wu Y. Identification of IgH gene rearrangement and immunophenotype in an animal model of Epstein-Barr virus-associated lymphomas. J Med Virol 2016; 88:1804-13. [PMID: 26991077 DOI: 10.1002/jmv.24526] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2016] [Indexed: 11/10/2022]
Abstract
Epstein-Barr virus (EBV) is a human oncogenic herpesvirus associated with lymphoma and nasopharyngeal carcinoma. Because the susceptible hosts of EB virus are limited to human and cotton-top tamarins (Saguinus oedipus), there have been no appropriate animal models until the lymphoma model induced by EBV in human peripheral blood lymphocyte (hu-PBL)/SCID chimeric mice was reported. However, it is still controversial whether the EBV-associated lymphoma induced in hu-PBL/SCID mice is a monoclonal tumor. In this study, we transplanted normal human peripheral blood lymphocytes (hu-PBL) from six donors infected with EBV into SCID mice to construct hu-PBL/SCID chimeric mice. The induced tumors were found in the mediastinum or abdominal cavity of SCID mice. Microscopic observation exhibited tumor cells that were large and had a plasmablastic, centroblastic or immunoblastic-like appearance. Immunophenotyping assays showed the induced tumors were LCA-positive, CD20/CD79a-positive (markers of B cells), and CD3/CD45RO-negative (markers of T cells). A human-specific Alu sequence could be amplified by Alu-PCR. This confirmed that induced tumors were B-cell lymphomas originating from the transplanted human lymphocytes rather than mouse cells. EBER in situ hybridization detected positive signals in the nuclei of the tumor cells. Expression of EBV-encoded LMP1, EBNA-1, and EBNA-2 in the tumors was significantly positive. PCR-based capillary electrophoresis analysis of IgH gene rearrangement revealed a monoclonal peak and single amplification product in all six cases of induced tumors. This indicated that EBV can induce monoclonal proliferation of human B lymphocytes and promotes the development of lymphoma. J. Med. Virol. 88:1804-1813, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Yang Zhang
- Cancer Research Institute, College of Medicine, University of South China, Chang Sheng Xi Avenue 28, Hengyang, Hunan 421001, P.R. China
| | - Xueqin Peng
- Cancer Research Institute, College of Medicine, University of South China, Chang Sheng Xi Avenue 28, Hengyang, Hunan 421001, P.R. China
| | - Yunlian Tang
- Cancer Research Institute, College of Medicine, University of South China, Chang Sheng Xi Avenue 28, Hengyang, Hunan 421001, P.R. China
| | - Xiaoning Gan
- Cancer Research Institute, College of Medicine, University of South China, Chang Sheng Xi Avenue 28, Hengyang, Hunan 421001, P.R. China
| | - Chengkun Wang
- Cancer Research Institute, College of Medicine, University of South China, Chang Sheng Xi Avenue 28, Hengyang, Hunan 421001, P.R. China
| | - Lu Xie
- Shanghai Center for Bioinformation Technology (SCBIT), Shanghai Academy of Science and Technology, Shanghai 201203, P.R. China
| | - Xiaoli Xie
- Cancer Research Institute, College of Medicine, University of South China, Chang Sheng Xi Avenue 28, Hengyang, Hunan 421001, P.R. China
| | - Runliang Gan
- Cancer Research Institute, College of Medicine, University of South China, Chang Sheng Xi Avenue 28, Hengyang, Hunan 421001, P.R. China
| | - Yimou Wu
- Hunan Provincial Key Laboratory for Special Pathogen Prevention and Control, University of South China, Hunan 421001, P.R. China
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Transient widespread cortical and splenial lesions in acute encephalitis/encephalopathy associated with primary Epstein–Barr virus infection. Int J Infect Dis 2016; 42:7-10. [DOI: 10.1016/j.ijid.2015.11.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 11/07/2015] [Accepted: 11/12/2015] [Indexed: 11/19/2022] Open
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13
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Sun Y, Sun C, Zhang E. Expression of Serum Sialic Acid, Early Antigen-IgA, and Viral Capsid Antigen-IgA in Nasopharynx Cancer Patients: The Diagnostic Implication of Combined Assays. Med Sci Monit 2015; 21:4068-73. [PMID: 26709095 PMCID: PMC4699620 DOI: 10.12659/msm.894951] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Ebstein-Barr virus (EBV) plays a critical role in nasopharynx cancer, which can be effectively monitored by serum levels of early antigen antibody (EA-IgA) and viral capsid antigen antibody (VCA-IgA). This study explored the diagnostic value of combined assays of sialic acid (SA), EA-IgA, and VCA-IgA via the expressional assay. Material/Methods A total of 42 nasopharynx cancer patients and 42 benign rhinitis and healthy controls were recruited in this study. Serum EA-IgA and VCA-IgA were tested by enzyme-linked immunosorbent assay (ELISA) and enzymatic assay of serum SA. Specificity and sensitivity of those 3 assays were compared. The diagnostic value of each parameter was evaluated by ROC curves. Results All 3 indexes (SA, EA-IgA and VCA-IgA) showed elevated serum levels in nasopharynx cancer patients when compared to those with rhinitis, who had higher levels than healthy individuals. Concentrations of these factors were also positively correlated with the TNM staging of cancer. The sensitivity and specificity were 30.95% and 83.33% (in SA), 57.14% and 95.24% (in EA-IgA), and 76.19% and 92.86% (in VCA-IgA), respectively. VCA-IgA had the highest sensitivity among all 3 indexes. The combined assay increased the diagnostic sensitivity to 92.86% without compromising specificity. Conclusions SA, EA-IgA, and VCA-IgA levels were significantly elevated in nasopharynx patients’ serum. The combined assay may have clinical value in diagnosis and monitoring.
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Affiliation(s)
- Yuning Sun
- Department of Otolaryngology Head and Neck Surgery, Second Municipal Hospital of Weihai, Weihai, Shandong, China (mainland)
| | - Caibo Sun
- Department of Otolaryngology Head and Neck Surgery, Second Municipal Hospital of Weihai, Weihai, Shandong, China (mainland)
| | - Endong Zhang
- Department of Otolaryngology Head and Neck Surgery, Second Municipal Hospital of Weihai, Weihai, Shandong, China (mainland)
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Liang QN, Chen PQ, Liu TC, Zhou JW, Chen JJ, Wu YS. Development of a time-resolved fluoroimmunoassay for Epstein–Barr virus viral capsid antigen IgA antibody in human serum. J Virol Methods 2015; 222:16-21. [DOI: 10.1016/j.jviromet.2015.03.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/24/2015] [Accepted: 03/31/2015] [Indexed: 12/11/2022]
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15
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Sun R, Wang X, Li X. Correlation Analysis of Nasopharyngeal Carcinoma TNM Staging with Serum EA IgA and VCA IgA in EBV and VEGF-C and -D. Med Sci Monit 2015; 21:2105-9. [PMID: 26191775 PMCID: PMC4514295 DOI: 10.12659/msm.893415] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Nasopharyngeal carcinoma often occurs in humans in the nasopharyngeal epithelium area. Ebstein-Barr (EB) virus plays a key role in the process of nasopharyngeal carcinoma lesions. Early antigen antibody (EA-IgA) and viral capsid antigen IgA (VCA-IgA) of EB virus detection in serum can effectively monitor the process of nasopharyngeal carcinoma lesions. Serum vascular endothelial growth factor (VEGF) -C and VEGF-D expression detection can reflect the distant metastases ability of human tumor cells. MATERIAL AND METHODS 153 cases of nasopharyngeal carcinoma patients in our hospital were enrolled, while 148 cases of healthy adults were selected as control. ELISA was used to detect serum EA-IgA, VCA-IgA, VEGF-C and -D expression levels. Spearman rank correlation analysis was applied to test the correlation of nasopharyngeal carcinoma TNM clinical stage and different indexes. RESULTS Serum EA-IgA, VCA-IgA, VEGF-C and -D expression in nasopharyngeal carcinoma patients was 43.74±2.6 U•mL^-1, 62.5±2.7 U·mL^-1, 473.25±3.4 pg•mL^-1, and 498.36±2.3 pg•mL^-1, respectively, which was significantly higher than in the control group as 18.65±3.7 U•mL^-1, 23.74±1.5 U•mL^-1, 225.42±2.3 pg•mL^-1, and 257.24±3.5 pg•mL^-1 (P<0.05). Nasopharyngeal carcinoma TNM clinical staging was obviously correlated with serum EA-IgA, VCA-IgA, and VEGF-C (P<0.05), but not VEGF-D (P>0.05). CONCLUSIONS Nasopharyngeal carcinoma patient serum EA-IgA and VCA-IgA expression levels were significantly correlated with TNM staging. The high levels of these 3 indicators suggest advanced nasopharyngeal carcinoma TNM staging and serious lesions.
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Affiliation(s)
- Ruimei Sun
- Department of Head and Neck Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China (mainland)
| | - Xiaoli Wang
- Department of Head and Neck Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China (mainland)
| | - Xiaojiang Li
- Department of Head and Neck Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China (mainland)
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