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Shi Y, Lu Y, Zhang RD, Zhang YY, Lin W, Yu JJ, Wu Y, Fan J, Qi PJ, Huang PL, Cai LX, Huang Q, Zhang P, Sun YM, Liu Y, Zheng HY. [Clinical characteristics and prognosis of 28 cases of infant acute lymphoblastic leukemia]. Zhonghua Er Ke Za Zhi 2024; 62:49-54. [PMID: 38154977 DOI: 10.3760/cma.j.cn112140-20230720-00020] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
Objective: To analyze the clinical characteristics and prognosis of patients with infant acute lymphoblastic leukemia (IALL). Methods: A retrospective cohort study.Clinical data, treatment and prognosis of 28 cases of IALL who have been treated at Beijing Children's Hospital, Capital Medical University and Baoding Children's Hospital from October 2013 to May 2023 were analyzed retrospectively. Based on the results of fluorescence in situ hybridization (FISH), all patients were divided into KMT2A gene rearrangement (KMT2A-R) positive group and KMT2A-R negative group. The prognosis of two groups were compared. Kaplan-Meier method and Log-Rank test were used to analyze the survival of the patients. Results: Among 28 cases of IALL, there were 10 males and 18 females, with the onset age of 10.9 (9.4,11.8) months. In terms of immune classification, 25 cases were B-ALL (89%), while the remaining 3 cases were T-ALL (11%). Most infant B-ALL showed pro-B lymphocyte phenotype (16/25,64%). A total of 22 cases (79%) obtained chromosome karyotype results, of which 7 were normal karyotypes, no complex karyotypes and 15 were abnormal karyotypes were found. Among abnormal karyotypes, there were 4 cases of t (9; 11), 2 cases of t (4; 11), 2 cases of t (11; 19), 1 case of t (1; 11) and 6 cases of other abnormal karyotypes. A total of 19 cases (68%) were positive for KMT2A-R detected by FISH. The KMT2A fusion gene was detected by real-time PCR in 16 cases (57%). A total of 24 patients completed standardized induction chemotherapy and were able to undergo efficacy evaluation, 23 cases (96%) achieved complete remission through induction chemotherapy, 4 cases (17%) died of relapse. The 5-year event free survival rate (EFS) was (46±13)%, and the 5-year overall survival rate (OS) was (73±10)%.The survival time was 31.3 (3.3, 62.5) months. There was no significant statistical difference in 5-year EFS ((46±14)% vs. (61±18)%) and 5-year OS ((64±13)% vs. (86±13)%) between the KMT2A-R positive group (15 cases) and the KMT2A-R negative group (9 cases) (χ2=1.88, 1.47, P=0.170, 0.224). Conclusions: Most IALL patients were accompanied by KMT2A-R. They had poor tolerance to traditional chemotherapy, the relapse rate during treatment was high and the prognosis was poor.
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Affiliation(s)
- Y Shi
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Clinical Discipline of Pediatric Hematology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - Y Lu
- Hematology Oncology Center, Baoding Children's Hospital,Baoding Key Laboratory of Precision Medicine for Pediatric Hematology Oncology, Hematology Oncology Center of National Center for Children's Health in Baoding, Baoding 071027, China
| | - R D Zhang
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Clinical Discipline of Pediatric Hematology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - Y Y Zhang
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Clinical Discipline of Pediatric Hematology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - W Lin
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Clinical Discipline of Pediatric Hematology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - J J Yu
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Clinical Discipline of Pediatric Hematology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - Y Wu
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Clinical Discipline of Pediatric Hematology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - J Fan
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Clinical Discipline of Pediatric Hematology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - P J Qi
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Clinical Discipline of Pediatric Hematology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - P L Huang
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Clinical Discipline of Pediatric Hematology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - L X Cai
- Hematology Oncology Center, Baoding Children's Hospital,Baoding Key Laboratory of Precision Medicine for Pediatric Hematology Oncology, Hematology Oncology Center of National Center for Children's Health in Baoding, Baoding 071027, China
| | - Q Huang
- Hematology Oncology Center, Baoding Children's Hospital,Baoding Key Laboratory of Precision Medicine for Pediatric Hematology Oncology, Hematology Oncology Center of National Center for Children's Health in Baoding, Baoding 071027, China
| | - P Zhang
- Hematology Oncology Center, Baoding Children's Hospital,Baoding Key Laboratory of Precision Medicine for Pediatric Hematology Oncology, Hematology Oncology Center of National Center for Children's Health in Baoding, Baoding 071027, China
| | - Y M Sun
- Hematology Oncology Center, Baoding Children's Hospital,Baoding Key Laboratory of Precision Medicine for Pediatric Hematology Oncology, Hematology Oncology Center of National Center for Children's Health in Baoding, Baoding 071027, China
| | - Y Liu
- Hematology Oncology Center, Baoding Children's Hospital,Baoding Key Laboratory of Precision Medicine for Pediatric Hematology Oncology, Hematology Oncology Center of National Center for Children's Health in Baoding, Baoding 071027, China
| | - H Y Zheng
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Clinical Discipline of Pediatric Hematology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
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Sun YM, Li GY, Lu HY. [Willingness of HIV non-occupational post-exposure prophylaxis and related factors among men who have sex with men in Beijing]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:1264-1269. [PMID: 37661619 DOI: 10.3760/cma.j.cn112338-20230109-00020] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Objective: To examine the willingness of HIV non-occupational post-exposure prophylaxis (nPEP) among MSM and factors related were also assessed. Methods: The respondent-driven sampling method was used to recruit MSM for a face-to-face interview with a structured questionnaire,the sample size was estimated at 600 subjects. Demographic data, sexual behavior, awareness, and willingness regarding nPEP were collected. The factors related to willingness to nPEP were assessed using complex logistic regression. Results: A total of 14 rounds were recruited and 608 MSM subjects were included in the study. The average age was (41.6±11.0) years. 55.4% (95%CI: 49.4%-59.4%) were aware of nPEP, and 4.5% (95%CI: 2.9%-6.2%) have used its. 35.9% (95%CI: 31.1%-40.7%) expressed interest in taking nPEP if needed. Among the reasons for not being willing to take nPEP, 68.9% (244/354) were never heard of nPEP, and 24.6% (87/354) were a fluke mentality. The multivariate logistic analysis results showed that the willingness of nPEP awareness of MSM was related to the group aged 25-39 years old (aOR=1.80, 95%CI: 1.01-3.20), knowing a group of HIV prevention knowledge (aOR=2.43, 95%CI: 1.52-3.90), group of consistent condom use in anal sex in the past half of year (aOR=1.76, 95%CI: 1.11-2.79). Conclusions: The use rate of nPEP among MSM in Beijing was low, and the willingness to use in the future also needs to be improved. The training of social organizations should be strengthened to improve the role of peer education in promoting nPEP.
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Affiliation(s)
- Y M Sun
- Institute for HIV/AIDS and STD Prevention and Control,Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - G Y Li
- Institute for HIV/AIDS and STD Prevention and Control,Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - H Y Lu
- Institute for HIV/AIDS and STD Prevention and Control,Beijing Center for Disease Prevention and Control, Beijing 100013, China
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Zhang W, Sun YM, Chen SY, You H. [Histopathological evaluation of cirrhosis reversal]. Zhonghua Gan Zang Bing Za Zhi 2023; 31:677-680. [PMID: 37580246 DOI: 10.3760/cma.j.cn501113-20230421-00185] [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] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
A normal liver can develop cirrhosis through long-term and repeated stimulation from various etiologies. Histological manifestations like the collapse of hepatic lobular structure (including microvascular structure) and the formation of pseudolobules can lead to portal hypertension and even decompensated cirrhosis. More and more evidence suggests that effective etiological treatment can not only delay but also reverse the progression of cirrhosis. The mechanism of cirrhosis reversal mainly includes the degradation of extracellular matrix, hepatocyte regeneration, and hepatic lobular remodeling. The "gold standard" for the evaluation of cirrhosis reversal at present is still a liver biopsy. Therefore, the histopathological evaluation of cirrhosis reversal is very important for determining the disease's prognosis, efficacy, and mechanism of exploration.
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Affiliation(s)
- W Zhang
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Y M Sun
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - S Y Chen
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - H You
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
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You H, Sun YM, Zhang MY, Nan YM, Xu XY, Li TS, Wang GQ, Hou JL, Duan ZP, Wei L, Wang FS, Jia JD, Zhuang H. [Interpretation of the essential updates in guidelines for the prevention and treatment of chronic hepatitis B (Version 2022)]. Zhonghua Gan Zang Bing Za Zhi 2023; 31:385-388. [PMID: 37248977 DOI: 10.3760/cma.j.cn501113-20230324-00127] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Chinese Society of Hepatology and Chinese Society of Infectious Diseases, Chinese Medical Association update the guidelines for the prevention and treatment of chronic hepatitis B (version 2022) in 2022. The latest guidelines recommend more extensive screening and more active antiviral treating for hepatitis B virus infection. This article interprets the essential updates in the guidelines to help deepen understanding and better guide the clinical practice.
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Affiliation(s)
- H You
- Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Y M Sun
- Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - M Y Zhang
- Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Y M Nan
- Third Hospital of Hebei Medical University, Shijiazhuang 050051, China
| | - X Y Xu
- Peking University First Hospital, Beijing 100034, China
| | - T S Li
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - G Q Wang
- Peking University First Hospital, Beijing 100034, China
| | - J L Hou
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Z P Duan
- Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - L Wei
- Beijing Tsinghua Changgung Hospital, Tsinghua University, Beijing 102218, China
| | - F S Wang
- The Fifth Medical Center of PLA General Hospital, Beijing 100039, China
| | - J D Jia
- Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - H Zhuang
- Peking University Health Science Center, Beijing 100191, China
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5
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Zhang MY, Chen SY, Sun YM, You H. [Different treatment strategies in patients with HBeAg-positive and negative chronic hepatitis B]. Zhonghua Gan Zang Bing Za Zhi 2023; 31:238-241. [PMID: 37137847 DOI: 10.3760/cma.j.cn501113-20230130-00029] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Patients with HBeAg-positive and negative chronic hepatitis B (CHB) have different immunological states and disease progression. Hence, the previously recommended antiviral therapy strategies for the two are different. In recent years, the antiviral indications have gradually eased, and the treatment goal has began to pursue clinical cure, as experts and scholars have gradually attached importance to the potential risk of disease progression in hepatitis B patients. Antiviral treatment strategies are gradually becoming uniform for patients with HBeAg-positive and negative. However, among them, HBeAg-negative patients can be combined with HBsAg quantification and other indicators to further screen the clinically cured dominant population in order to formulate the next treatment strategy.
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Affiliation(s)
- M Y Zhang
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - S Y Chen
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Y M Sun
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - H You
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
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6
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Zhang MY, Sun YM, You H. [Expanding antiviral therapy for chronic hepatitis B: scale up screening and treatment]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:1133-1136. [PMID: 36891686 DOI: 10.3760/cma.j.cn501113-20221018-00497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
The Chinese Society of Hepatology, Chinese Medical Association published "Expert Opinions on Expanding Antiviral Therapy for Chronic Hepatitis B" in 2022, with a focus on "active screening of the existing patients, paying attention to the potential risk of disease progression, and active intervening of the low level viremia," and recommended that specific actions be taken to further optimize the expanding screening, widening the antiviral indications, and scale up the diagnosis and treatment of low level viremia.
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Affiliation(s)
- M Y Zhang
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Y M Sun
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - H You
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
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7
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Xu ZH, Liu J, Li B, Wang JK, Zeng X, Chen ZJ, Hongsibsong S, Huang W, Lei HT, Sun YM, Xu ZL. The Simultaneous Determination of Chlorpyrifos-Ethyl and -Methyl with a New Format of Fluorescence-Based Immunochromatographic Assay. Biosensors (Basel) 2022; 12:1006. [PMID: 36421124 PMCID: PMC9688337 DOI: 10.3390/bios12111006] [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] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
The improper and excessive use in agriculture of chlorpyrifos-methyl (CPSM) and chlorpyrifos-ethyl (CPSE) may affect the health of human beings. Herein, a fluorescence-based immunochromatographic assay (FICA) was developed for the simultaneous determination of CPSM and CPSE. A monoclonal antibody (mAb) with equal recognition of CPSM and CPSE was generated by the careful designing of haptens and screening of hybridoma cells. Instead of labeling fluorescence with mAb, the probe was labeled with goat-anti-mouse IgG (GAM-IgG) and pre-incubated with mAb in the sample. The complex could compete with CPS by coating antigen in the test line. The new format of FICA used goat-anti-rabbit IgG (GAR-IgG) conjugated with rabbit IgG labeled with fluorescence microspheres as an independent quality control line (C line). The novel strategy significantly reduced nonspecific reactions and increased assay sensitivity. Under the optimal conditions, the proposed FICA showed a linear range of 0.015-64 mg/L and limit of detection (LOD) of 0.015 mg/L for both CPSE and CPSM. The average recoveries of CPS from spiked food samples by FICA were 82.0-110.0%. The accuracy was similar to the gas chromatography-tandem mass spectrometry (GC-MS/MS) results. The developed FICA was an ideal on-site tool for rapid screening of CPS residues in foods.
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Affiliation(s)
- Zi-Hong Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Jia Liu
- Guangzhou Institute of Food Inspection, Guangzhou 510410, China
| | - Bin Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
- Guangdong Dayuanlvzhou Food Safety Technology Co., Ltd., Guangzhou 510530, China
| | - Jun-Kai Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Xi Zeng
- Guangzhou Institute of Food Inspection, Guangzhou 510410, China
| | - Zi-Jian Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Surat Hongsibsong
- School of Health Sciences Research, Research Institute for Health Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Wei Huang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Hong-Tao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
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Chen SY, Sun YM, Zhou JL, Wu XN, Meng TT, Wang BQ, Liu H, Wang TL, Shao C, Zhao XY, Xu XQ, Kong YY, Ou XJ, Jia JD, You H. [Histological regression and clinical benefits in patients with liver cirrhosis after long-term anti-HBV treatment]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:583-590. [PMID: 36038318 DOI: 10.3760/cma.j.cn501113-20220508-00246] [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: 06/15/2023]
Abstract
Objective: Our study aims to determine histological regression and clinical improvement after long-term antiviral therapy in hepatitis B virus-related cirrhosis patients. Methods: Treatment-naïve chronic hepatitis B patients with histologically or clinically diagnosed liver cirrhosis were enrolled. Liver biopsies were performed after 5 years entecavir-based antiviral treatment. Patients were followed up every 6 months. Cirrhosis regression was evaluated based on Metavir system and P-I-R score. Clinical improvement was evaluated before and after the long-term treatment. Kruskal Wallis test and Wilcoxon signed-rank test were used for continuous variables, Fisher's exact test was used for categorical variables and multivariate analysis was performed using logistic regression analysis. Results: Totals of 73 patients with HBV-related liver cirrhosis were enrolled. Among them, 30 (41.1%) patients were biopsy proved liver cirrhosis and the remaining 43 (58.9%) cirrhotic patients were diagnosed by clinical features. Based on Metavir system and P-I-R score, 72.6% (53/73) patients attained histological regression. Furthermore, 30.1% (22/73) were defined as significant regression (Metavir decrease ≥2 stage), 42.5% (31/73) were mild regression (Metavir decrease 1 stage or predominantly regressive by P-I-R system if still cirrhosis after treatment) and 27.4% (20/73) were the non-regression. Compared to levels of clinical characteristics at baseline, HBV DNA, ALT, AST, liver stiffness(decreased from 12.7 to 6.4 kPa in significant regression, from 18.1 to 7.3 kPa in mild regression and from 21.4 to 11.2 kPa in non-regression)and Ishak-HAI score significantly decreased after 5 years of anti-HBV treatment, while serum levels of platelets and albumin improved remarkably (P<0.05). In multivariate analysis, only the pre-treatment liver stiffness level was associated with significant regression (OR=0.887, 95%CI: 0.802-0.981, P=0.020). Conclusions: After long-term antiviral therapy, patients with HBV-related cirrhosis are easily to attain improvements in clinical parameters, while a certain percentage of these patients still cannot achieve histological reversal.
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Affiliation(s)
- S Y Chen
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Y M Sun
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - J L Zhou
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - X N Wu
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - T T Meng
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - B Q Wang
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - H Liu
- Department of Pathology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - T L Wang
- Department of Pathology, China-Japan Friendship Hospital, Beijing 100029, China
| | - C Shao
- Department of Pathology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - X Y Zhao
- Clinical Epidemiology and EBM Unit, Beijing Friendship Hospital, Capital Medical University, Beijing Clinical Research Institute, Beijing 100050, China
| | - X Q Xu
- Clinical Epidemiology and EBM Unit, Beijing Friendship Hospital, Capital Medical University, Beijing Clinical Research Institute, Beijing 100050, China
| | - Y Y Kong
- Clinical Epidemiology and EBM Unit, Beijing Friendship Hospital, Capital Medical University, Beijing Clinical Research Institute, Beijing 100050, China
| | - X J Ou
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - J D Jia
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - H You
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
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Wang BQ, Wu XN, Zhou JL, Sun YM, Meng TT, Chen SY, Guan QS, He ZY, Wu SS, Kong YY, Ou XJ, Jia JD, You H. [Analysis of change in esophageal varices and clinical characteristics in hepatitis B virus-related cirrhosis after antiviral therapy]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:591-597. [PMID: 36038319 DOI: 10.3760/cma.j.cn501113-20220501-00232] [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: 06/15/2023]
Abstract
Objective: To clarify the effect and related factors of antiviral therapy on the change of esophageal varices in patients with hepatitis B virus-related cirrhosis. Methods: Fifty-two cases with hepatitis B virus-related cirrhosis who underwent endoscopy before and after antiviral therapy were selected from prospective cohorts. Patients were divided into three groups: no, mild, and moderate-severe based on the degree of esophageal varices. The changes in the severity of esophageal varices in each group were compared after antiviral therapy. Clinical characteristics (platelet, liver and kidney function, liver stiffness, and virological response) of patients with different regressions were analyzed. Measurement data were analyzed by independent sample t-test, one-way ANOVA, Mann-Whitney U test and Kruskal-Wallis H test, and Chi-Square test was used for count data. Results: All patients received entecavir-based antiviral therapy. The median treatment time was 3.1 (2.5-4.4) years. The proportion of patients without esophageal varices increased from 30.8% to 51.9%, the proportion of mild esophageal varices decreased from 40.4% to 30.8%, and the proportion of patients with moderate-to-severe esophageal varices decreased from 28.8% to 17.3% (χ2=14.067, P=0.001). A total of 40.4% of patients had esophageal varices regression, and 13.5% had esophageal varices progression. The progression rate was significantly higher in patients with moderate-severe esophageal varices than patients with mild and no esophageal varices (χ2=28.126, P<0.001), and 60.0% of patients with moderate-severe esophageal varices still remained in moderate-severe state after antiviral treatment. Baseline platelet count and 5-year mean change rates were significantly lower in patients with progressive moderate-to-severe esophageal varices than in those without progression (+3.3% vs. +34.1%, Z=7.00, P=0.027). Conclusion: After effective antiviral treatment, 40.4% of patients with hepatitis B virus-related cirrhosis combined with esophageal varices has obtained esophageal varices regression, but those with moderate to severe esophageal varices still have a considerable risk of progression while receiving mono antiviral treatment only. Thrombocytopenia and without significant improving are the clinical signs of progression risk after receiving antiviral treatment.
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Affiliation(s)
- B Q Wang
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - X N Wu
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - J L Zhou
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Y M Sun
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - T T Meng
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - S Y Chen
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Q S Guan
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Z Y He
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - S S Wu
- Clinical Epidemiology and EBM Unit, Beijing Friendship Hospital, Capital Medical University, Beijing Clinical Research Institute, Beijing 100050, China
| | - Y Y Kong
- Clinical Epidemiology and EBM Unit, Beijing Friendship Hospital, Capital Medical University, Beijing Clinical Research Institute, Beijing 100050, China
| | - X J Ou
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - J D Jia
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - H You
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
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10
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Zhang JY, Sun YM, Chen SY, You H. [Reversal of hepatic fibrosis: more evidence and more challenges]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:569-571. [PMID: 36038315 DOI: 10.3760/cma.j.cn501113-20220510-00255] [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: 06/15/2023]
Abstract
Hepatic fibrosis is a response to various types of hepatic injury, which can lead to cirrhosis and its complications. In recent years, in patients with viral hepatitis, nonalcoholic steatohepatitis, alcoholic liver disease, autoimmune liver disease and others the fibrosis or even early cirrhosis can be regressed if the etiology are controlled. Liver biopsy is still the gold standard for assessing fibrosis reversal, but non-invasive methods such as transient elastography hold great promise due to the ease to use for dynamic monitoring. Mechanisms of hepatic fibrosis reversal include extracellular matrix degradation, hepatocyte regeneration, and vascular remodeling. Presently, novel agents targeting the steps of fibrosis are urgently need for achieving regression of liver fibrosis.
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Affiliation(s)
- J Y Zhang
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Y M Sun
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - S Y Chen
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - H You
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
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11
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Wang F, Yang YY, Wan DB, Li JD, Liang YF, Li ZF, Shen YD, Xu ZL, Yang JY, Wang H, Gettemans J, Hammock BD, Sun YM. Nanobodies for accurate recognition of iso-tenuazonic acid and development of sensitive immunoassay for contaminant detection in foods. Food Control 2022; 136. [DOI: 10.1016/j.foodcont.2022.108835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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12
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Zhang YY, Li LH, Wang Y, Wang H, Xu ZL, Tian YX, Sun YM, Yang JY, Shen YD. Ultrasensitive and rapid colorimetric detection of paraquat via a high specific VHH nanobody. Biosens Bioelectron 2022; 205:114089. [DOI: 10.1016/j.bios.2022.114089] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 02/03/2022] [Accepted: 02/09/2022] [Indexed: 12/19/2022]
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13
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Zhu L, Dong XX, Gao CB, Gai Z, He YX, Qian ZJ, Liu Y, Lei HT, Sun YM, Xu ZL. Development of a highly sensitive and selective electrochemical immunosensor for controlling of rhodamine B abuse in food samples. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108662] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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14
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Tan FJ, Rungruengpet W, Simsiri U, Kaewkot C, Sun YM, Chumngoen W. Influences of Egg Washing and Storage Temperature on Quality and Shelf Life of Duck Eggs During Storage. Braz J Poult Sci 2022. [DOI: 10.1590/1806-9061-2021-1554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- FJ Tan
- National Chung Hsing University, Taiwan
| | | | - U Simsiri
- National Chung Hsing University, Taiwan
| | - C Kaewkot
- National Chung Hsing University, Taiwan
| | - YM Sun
- National Animal Industry Foundation, Taiwan
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15
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Liao CX, Jia BZ, Wang H, Sun YM, Xu XY, Wei XQ, Shen YD, Lei HT, Xu ZL, Luo L. Prussian blue nanoparticles-enabled sensitive and accurate ratiometric fluorescence immunoassay for histamine. Food Chem 2021; 376:131907. [PMID: 34968915 DOI: 10.1016/j.foodchem.2021.131907] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 12/16/2021] [Accepted: 12/18/2021] [Indexed: 12/24/2022]
Abstract
Herein, a nanozyme-mediated ratiometric fluorescence immunoassay for histamine (HA) has been developed. Prussian blue nanoparticles (PBNPs) with outstanding peroxidase-like activity were labelled with goat anti-mouse IgG via a facile electrostatic adsorption to yield the nanozyme-antibody conjugate which acted as a bridge to link the ratiometric fluorescence readout with HA concentration. As substrate, o-phenylenediamine (OPD) was oxidized into 2,3-diaminophenazine (oxOPD) by H2O2 under the catalysis of PBNPs, producing a novel emission at 570 nm and quenching the fluorescence of carbon dots (CDs) at 450 nm simultaneously. Under optimal conditions, the ratio of fluorescence intensity at 570 nm and 450 nm (I570/I450) linearly correlated with HA concentration ranging from 1.6 ng/mL to 125 μg/mL, with a detection limit (LOD) of 1.2 ng/mL. In addition, analytical performances including specificity, accuracy and applicability were evaluated, which revealed that this ratiometric fluorescence immunoassay affords an effective platform for sensitive and accurate detection of HA.
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Affiliation(s)
- Cai-Xia Liao
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Bao-Zhu Jia
- College of Biology and Food Engineering, Guangdong University of Education, Guangzhou 510303, China
| | - Hong Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Xiao-Yan Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Xiao-Qun Wei
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Yu-Dong Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Hong-Tao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China.
| | - Lin Luo
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China.
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16
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Zhou K, Zhang X, Li B, Shen C, Sun YM, Yang J, Xu ZL. Citrulline Accumulation Mechanism of Pediococcus acidilactici and Weissella confusa in Soy Sauce and the Effects of Phenolic Compound on Citrulline Accumulation. Front Microbiol 2021; 12:757542. [PMID: 34925267 PMCID: PMC8678507 DOI: 10.3389/fmicb.2021.757542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 08/12/2021] [Accepted: 10/19/2021] [Indexed: 11/23/2022] Open
Abstract
Citrulline is one of the major precursors of ethyl carbamate in soy sauce, and the accumulation of citrulline is attributed to the metabolism of arginine by bacteria with the arginine deiminase (ADI) pathway. However, key strains and factors affecting citrulline accumulation are not yet clear. In this study, two key strains of Pediococcus acidilactici and Weissella confusa were isolated from soy sauce moromi, and the regularity of citrulline formation was studied. Results showed that the conversion rates from arginine to citrulline (A/C rate) and the citrulline accumulation ability of W. confusa and P. acidilactici significantly increased in the presence of different concentrations of NaCl, indicating that salt stress was the main factor for citrulline accumulation. The inconsistent expression of arc genes by salt stress was the reason for citrulline accumulation for P. acidilactici, but for W. confusa, it may be due to the influence of arginine/citrulline on the transportation system: the intracellular citrulline could neither transport to extracellular space nor convert into ornithine. Environmental factors greatly influenced citrulline accumulation of the two key bacteria; A/C rate and citrulline formation in both strains decreased at low temperature (15°C) under high salt stress, but opposite effects were observed for the two key strains under anaerobic light condition. Moreover, quercetin and gallic acid significantly decreased the A/C rate and citrulline accumulation ability of the two key strains. The optimal quercetin and gallic acid as suggested by simulation experiment were 100 and 10 mg/l, respectively, and the lowest A/C rate of 28.4% and citrulline level of 1326.7 mg/l were achieved in the simulation system. This study explored the main factors for citrulline formation by the two key strains and proposed a targeted way to control citrulline in soy sauce.
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Affiliation(s)
- Kai Zhou
- Institute of Jiangxi Oil-Tea Camellia, Jiujiang University, Jiujiang, China.,Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, China.,Department of Production-Learning-Research, Shenzhen Total-Test Technology Co., Ltd., Shenzhen, China
| | - Xiao Zhang
- Institute of Jiangxi Oil-Tea Camellia, Jiujiang University, Jiujiang, China
| | - Bingyong Li
- Institute of Jiangxi Oil-Tea Camellia, Jiujiang University, Jiujiang, China
| | - Chaoqun Shen
- Department of Production-Learning-Research, Shenzhen Total-Test Technology Co., Ltd., Shenzhen, China
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Jianyuan Yang
- Institute of Jiangxi Oil-Tea Camellia, Jiujiang University, Jiujiang, China
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, China
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17
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Lu ZZ, Sun YM, You H. [Low-level viremia-induced liver fibrosis and hepatocellular carcinoma in chronic hepatitis B]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:1144-1146. [PMID: 35045627 DOI: 10.3760/cma.j.cn501113-20211124-00577] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Low-level viremia after antiviral therapy has gradually attracted attention due to its relation to liver fibrosis progression, hepatocellular carcinoma occurrence and long-term survival rate reduction in patients with chronic hepatitis B. In addition, it should be used as a risk factor for intervention during antiviral therapy in order to achieve complete virological response and improve the long-term prognosis of patients.
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Affiliation(s)
- Z Z Lu
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Y M Sun
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - H You
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
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18
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Jin MY, Wu XY, Li MY, Li XT, Huang RM, Sun YM, Xu ZL. Noni ( Morinda citrifolia L.) Fruit Polysaccharides Regulated IBD Mice Via Targeting Gut Microbiota: Association of JNK/ERK/NF-κB Signaling Pathways. J Agric Food Chem 2021; 69:10151-10162. [PMID: 34432454 DOI: 10.1021/acs.jafc.1c03833] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Inflammatory bowel disease (IBD) is a disease characterized by intestinal inflammation with immune dysregulation and intestinal microecological imbalance. In a dextran sulfate sodium salt (DSS)-induced IBD mouse model, noni (Morinda citrifolia L.) fruit polysaccharides (NFP) with homogalacturonan and rhamnogalacturonan-I domain decreased the concentration of serum LPS, TNF-α, and IL-17 by 84, 42, and 65%, respectively. It was abolished when intestinal microbiota were depleted by antibiotics. Sequencing analysis of gut microbiota showed an attenuated disruption of the microbial composition in the DSS+NFP group. Targeted metabolomic analysis revealed that NFP upregulated the content of acetic acid, propionic acid, and butyric acid by onefold but reduced isobutyric acid and isovaleric acid contents. NFP also inhibited JNK, ERK, and NF-κB phosphorylation of IBD mice. Taken together, the mechanism of NFP alleviating IBD is related to the intestinal microecological balance to inhibit inflammatory signaling pathways. This study provides a basis for NFP as a cheap intervention for the prevention and treatment of IBD patients.
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Affiliation(s)
- Ming-Yu Jin
- Guangdong Province Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Xiao-Yong Wu
- College of Food Science, Guangdong Pharmaceutical University, Zhongshan 528453, China
| | - Mei-Ying Li
- Guangdong Province Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Xiao-Tong Li
- Guangdong Province Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Ri-Ming Huang
- Guangdong Province Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Yuan-Ming Sun
- Guangdong Province Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Zhen-Lin Xu
- Guangdong Province Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, College of Food Science, South China Agricultural University, Guangzhou 510642, China
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19
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Chen ZJ, Huang Z, Sun YM, Xu ZL, Liu J. The Most Active Oxidase-Mimicking Mn 2 O 3 Nanozyme for Biosensor Signal Generation. Chemistry 2021; 27:9597-9604. [PMID: 33857336 DOI: 10.1002/chem.202100567] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Indexed: 11/08/2022]
Abstract
Oxidase-mimicking nanozymes are more desirable than peroxidase-mimicking ones since H2 O2 can be omitted. However, only a few nanomaterials are known for oxidase-like activities. In this work, we compared the activity of Mn2 O3 , Mn3 O4 and MnO2 and found that Mn2 O3 had the highest oxidase activity. Interestingly, the activity of Mn2 O3 was even inhibited by H2 O2 . The oxidase-like activity of Mn2 O3 was not much affected by the presence of proteins such as bovine serum albumin (BSA), but the physisorption of antibodies to Mn2 O3 was not strong enough to withstand the displacement by BSA. We then treated Mn2 O3 with 3-aminopropyltriethoxysilane to graft an amine group, which was used to conjugate antibodies using glutaraldehyde as a crosslinker. A one-step indirect competitive ELISA (icELISA) was developed for the detection of isocarbophos, and an IC50 of 261.7 ng/mL was obtained, comparable with the results of the standard two-step assay using horseradish peroxidase (HRP)-labeled antibodies. This assay has the advantage of significant timesaving for rapid detection of large amounts of samples. This work has discovered a highly efficient oxidase-mimicking nanozyme useful for various nano- and analytical applications.
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Affiliation(s)
- Zi-Jian Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.,Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2 L 3G1, Canada
| | - Zhicheng Huang
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2 L 3G1, Canada
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2 L 3G1, Canada
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20
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Wang F, Li ZF, Wan DB, Vasylieva N, Shen YD, Xu ZL, Yang JY, Gettemans J, Wang H, Hammock BD, Sun YM. Enhanced Non-Toxic Immunodetection of Alternaria Mycotoxin Tenuazonic Acid Based on Ferritin-Displayed Anti-Idiotypic Nanobody-Nanoluciferase Multimers. J Agric Food Chem 2021; 69:4911-4917. [PMID: 33870684 DOI: 10.1021/acs.jafc.1c01128] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The non-toxic immunoassay for mycotoxins is being paid more attention due to its advantages of higher safety and cost savings by using anti-idiotype antibodies to substitute toxins. In this study, with tenuazonic acid (TeA), a kind of highly toxic Alternaria mycotoxin as the target, an enhanced non-toxic immunoassay was developed based on the ferritin-displayed anti-idiotypic nanobody-nanoluciferase multimers. First, three specific β-type anti-idiotype nanobodies (AId-Nbs) bearing the internal image of TeA mycotoxin were selected from an immune phage display library. Then, the AId-Nb 2D with the best performance was exploited to generate a nanoluciferase (Nluc)-functionalized fusion monomer, by which a one-step non-toxic immunodetection format for TeA was established and proven to be effective. To further improve the affinity of the monomer, a ferritin display strategy was used to prepare 2D-Nluc fusion multimers. Finally, an enhanced bioluminescent enzyme immunoassay (BLEIA) was established in which the half maximal inhibitory concentration (IC50) for TeA was 6.5 ng/mL with a 10.5-fold improvement of the 2D-based enzyme-linked immunosorbent assay (ELISA). The proposed assay exhibited high selectivities and good recoveries of 80.0-95.2%. The generated AId-Nb and ferritin-displayed AId-Nb-Nluc multimers were successfully extended to the application of TeA in food samples. This study brings a new strategy for production of multivalent AId-Nbs and non-toxic immunoassays for trace toxic contaminants.
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Affiliation(s)
- Feng Wang
- College of Food Science, Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, P. R. China
| | - Zhen-Feng Li
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
- Guangzhou Nabo Antibody Technology Co. Ltd., Guangzhou 510530, P. R. China
| | - De-Bin Wan
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Natalia Vasylieva
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Yu-Dong Shen
- College of Food Science, Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, P. R. China
| | - Zhen-Lin Xu
- College of Food Science, Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, P. R. China
| | - Jin-Yi Yang
- College of Food Science, Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, P. R. China
| | - Jan Gettemans
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent B-9000, Belgium
| | - Hong Wang
- College of Food Science, Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, P. R. China
| | - Bruce D Hammock
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Yuan-Ming Sun
- College of Food Science, Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, P. R. China
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21
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Wang F, Wan DB, Shen YD, Tian YX, Xiao ZL, Xu ZL, Yang JY, Sun YM, Hammock BD, Wang H. Development of a chemiluminescence immunoassay for detection of tenuazonic acid mycotoxin in fruit juices with a specific camel polyclonal antibody. Anal Methods 2021; 13:1795-1802. [PMID: 33885655 DOI: 10.1039/d1ay00200g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The natural mycotoxin tenuazonic acid (TeA) in foods is identified as the most toxic mycotoxin among the over 70 kinds of secondary toxic metabolites produced by Alternaria alternata. Some hapten-antibody-mediated immunoassays have been developed for TeA detection in food samples, but these methods show unsatisfactory sensitivity and specificity. In this study, a rationally designed hapten for TeA mycotoxin generated with computer-assisted modeling was prepared to produce a highly specific camel polyclonal antibody, and an indirect competitive chemiluminescence enzyme immunoassay (icCLEIA) was established with a limit of detection of 0.2 ng mL-1 under optimized conditions. The cross-reactivity results showed that several analogs and some common mycotoxins had negligible recognition by the anti-TeA polyclonal antibody. The average recoveries spiked in fruit juices were determined to be 92.7% with an acceptable coefficient of variation, and good correlations between icCLEIA and liquid chromatography tandem mass spectrometry (LC-MS/MS) results were obtained in spiked samples. This developed icCLEIA for TeA detection with significantly improved sensitivity and satisfactory specificity is a promising alternative for environmental monitoring and food safety.
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Affiliation(s)
- Feng Wang
- College of Food Science, South China Agricultural University, Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou 510642, P. R. China.
| | - De-Bin Wan
- Department of Entomology and Nematology, UCD Comprehensive Cancer Center, University of California, Davis, California 95616, USA
| | - Yu-Dong Shen
- College of Food Science, South China Agricultural University, Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou 510642, P. R. China.
| | - Yuan-Xin Tian
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, P. R. China
| | - Zhi-Li Xiao
- College of Food Science, South China Agricultural University, Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou 510642, P. R. China.
| | - Zhen-Lin Xu
- College of Food Science, South China Agricultural University, Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou 510642, P. R. China.
| | - Jin-Yi Yang
- College of Food Science, South China Agricultural University, Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou 510642, P. R. China.
| | - Yuan-Ming Sun
- College of Food Science, South China Agricultural University, Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou 510642, P. R. China.
| | - Bruce D Hammock
- Department of Entomology and Nematology, UCD Comprehensive Cancer Center, University of California, Davis, California 95616, USA
| | - Hong Wang
- College of Food Science, South China Agricultural University, Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou 510642, P. R. China.
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22
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Sun YM, Liu F, Cai W, Wang L, Liu F, Li Y, Wang J, Ying H, Fu J. [Transmission chains of clusters of COVID-19 associated with a market in Beijing]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:427-432. [PMID: 34814409 DOI: 10.3760/cma.j.cn112338-20201027-01285] [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: 06/13/2023]
Abstract
Objective: To investigate the clusters of COVID-19 associated with a market (market Y) in Haidian District, Beijing, and analyze the chain of transmission and provide reference for effective prevention and control of COVID-19. Methods: The investigation of field epidemiology and cluster epidemic was used to describe the distributions of all COVID-19 cases. The time sequence diagram of the cases, disease onset was drawn and transmission chains were analyzed. Real-time RT-PCR assay was conducted for SARS-CoV-2 nucleic acid test by using the respiratory samples of the cases. Results: The COVID-19 epidemic, originated from a wholesale farm produce market (market X) in Fengtai District, Beijing, was introduced by a marketer in the market Y who had exposed to market X, causing 8 clusters of 20 confirmed cases of COVID-19 and one asymptomatic case, including 8 men and 13 women, in market Y, surrounding communities, food plaza, companies,families and other places. The incidence peaked during June 10-14, 2020; the median age of the cases was 45 years, ranging from 5 years to 87 years. The initial symptoms of the cases included fever (10/20) and pharynx discomfort (7/20). The median of incubation period was 5 days (IQR:3-8). The median of serial interval between primary case and secondary cases was 5 days with a secondary attack rate of 3.7%(20/538), and the secondary attack rate in household close-contacts was 14.0% (7/50). Conclusions: The clusters of COVID-19 associated with market Y were caused by several modes of transmission, including human-to-human, contaminated material-to-human, etc. The combined public-health response measures were effective to control the COVID-19 epidemic in Haidian district of Beijing.
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Affiliation(s)
- Y M Sun
- Haidian District Center for Disease Control and Prevention, Beijing 100094, China
| | - Feng Liu
- Haidian District Center for Disease Control and Prevention, Beijing 100094, China
| | - Wei Cai
- Haidian District Center for Disease Control and Prevention, Beijing 100094, China
| | - Lei Wang
- Haidian District Center for Disease Control and Prevention, Beijing 100094, China
| | - Fangyao Liu
- Haidian District Center for Disease Control and Prevention, Beijing 100094, China
| | - Yulian Li
- Haidian District Center for Disease Control and Prevention, Beijing 100094, China
| | - Juguang Wang
- Haidian District Center for Disease Control and Prevention, Beijing 100094, China
| | - Huaqing Ying
- Haidian District Center for Disease Control and Prevention, Beijing 100094, China
| | - Jiye Fu
- Haidian District Center for Disease Control and Prevention, Beijing 100094, China
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23
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Simsiri U, Rungruengpet W, Kaewkot C, Sun YM, Świąder K, Wanangkarn A, Tan FJ. Influence of Cold Chain Integrity during Postwashing Processing and Storage on Chicken Egg Quality. Braz J Poult Sci 2021. [DOI: 10.1590/1806-9061-2021-1458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- U Simsiri
- National Chung Hsing University, Taiwan
| | | | - C Kaewkot
- National Chung Hsing University, Taiwan
| | - YM Sun
- National Animal Industry Foundation, Taiwan
| | - K Świąder
- Warsaw University of Life Sciences, Poland
| | | | - FJ Tan
- National Chung Hsing University, Taiwan
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Sun YM, Wu H, Lin JH, Lai SJ, Tong ZD, Zheng JH. [Summary of experience in prevention and control management of electronic nasopharyngoscopy and laryngoscopy during the outbreak of Coronavirus Disease 2019]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:1169-1171. [PMID: 33342134 DOI: 10.3760/cma.j.cn115330-20200228-00136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y M Sun
- Department of Otorhinolaryngology Head and Neck Surgery, the 73rd Military Hospital of the Army and the Affiliated Successful Hospital of Xiamen University, Xiamen 361003, China
| | - H Wu
- Department of Otorhinolaryngology Head and Neck Surgery, the 73rd Military Hospital of the Army and the Affiliated Successful Hospital of Xiamen University, Xiamen 361003, China
| | - J H Lin
- Department of Otorhinolaryngology Head and Neck Surgery, the 73rd Military Hospital of the Army and the Affiliated Successful Hospital of Xiamen University, Xiamen 361003, China
| | - S J Lai
- Department of Otorhinolaryngology Head and Neck Surgery, the 73rd Military Hospital of the Army and the Affiliated Successful Hospital of Xiamen University, Xiamen 361003, China
| | - Z D Tong
- Department of Otorhinolaryngology Head and Neck Surgery, the 73rd Military Hospital of the Army and the Affiliated Successful Hospital of Xiamen University, Xiamen 361003, China
| | - J H Zheng
- Department of Otorhinolaryngology Head and Neck Surgery, the 73rd Military Hospital of the Army and the Affiliated Successful Hospital of Xiamen University, Xiamen 361003, China
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Chen S, Zhao LH, Shan S, Li M, Sun YM, Zhou JL, Wu XN, Dong RH, Kong YY, Ou XJ, Ma H, You H, Jia JD. [Systematic evaluation of clinical trial protocols of new drugs as a cure of chronic hepatitis B]. Zhonghua Gan Zang Bing Za Zhi 2020; 28:954-958. [PMID: 32911904 DOI: 10.3760/cma.j.cn501113-20200609-00305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To describe the current status of registration and design characteristics of clinical trials of new drugs for curing hepatitis B through domestic and foreign websites, so as to provide references for the follow-up clinical trials of new hepatitis B drugs. Methods: A search was conducted on the US Clinical Trials Database and the Chinese Clinical Trial Registry Center. The search date was from the establishment of the database to May 26, 2020, and the registration trials of new drugs for curing hepatitis B at home and abroad were included. Two researchers independently searched and screened the literature and extracted the data. Results: A total of 106 registered clinical trials of new drugs for curing hepatitis B were included (94 English registration websites and 12 Chinese registration websites), and the number of registrations had increased year by year. Among them, the proportion of therapeutic vaccines and core protein inhibitors were the highest, accounting for 27.4% (n = 29) and 22.6% (n = 24), respectively. The vast majority of clinical trials (n = 96, 90.6%) were in the early stages (Phase I and II). The subjects in phase I clinical trial were mainly healthy people and treated CHB patients, while the subjects in phase II clinical trial were mainly CHB patients who had achieved viral suppression after initial or post-treatment. The main evaluation indicators of Phase I clinical trials were the safety and tolerability of new drugs. The main evaluation indicators in about half of Phase II clinical trials were HBsAg negative conversion/quantitative decline. Overall, the number of clinical trials with the new design was small, accounting for 3.8% (4 / 106). There were relatively few trials of new drugs for curing hepatitis B on domestic registration websites, and the information provided was incomplete. Conclusion: The number of clinical trials of new hepatitis B drugs at home and abroad is increasing year by year, but most of them are in phase I and II, with few adopting new designs. In addition, the information integrity of the domestic website registration center needs to be improved.
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Affiliation(s)
- S Chen
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis; National Clinical Research Center for Digestive Diseases; Beijing 100050, China
| | - L H Zhao
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis; National Clinical Research Center for Digestive Diseases; Beijing 100050, China
| | - S Shan
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis; National Clinical Research Center for Digestive Diseases; Beijing 100050, China
| | - M Li
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis; National Clinical Research Center for Digestive Diseases; Beijing 100050, China
| | - Y M Sun
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis; National Clinical Research Center for Digestive Diseases; Beijing 100050, China
| | - J L Zhou
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis; National Clinical Research Center for Digestive Diseases; Beijing 100050, China
| | - X N Wu
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis; National Clinical Research Center for Digestive Diseases; Beijing 100050, China
| | - R H Dong
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis; National Clinical Research Center for Digestive Diseases; Beijing 100050, China
| | - Y Y Kong
- Department of Clinical Epidemiology and EBM, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - X J Ou
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis; National Clinical Research Center for Digestive Diseases; Beijing 100050, China
| | - H Ma
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis; National Clinical Research Center for Digestive Diseases; Beijing 100050, China
| | - H You
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis; National Clinical Research Center for Digestive Diseases; Beijing 100050, China
| | - J D Jia
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis; National Clinical Research Center for Digestive Diseases; Beijing 100050, China
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Zhang SW, Sun YY, Sun YM, Wang H, Li ZF, Xu ZL. Visual upconversion nanoparticle-based immunochromatographic assay for the semi-quantitative detection of sibutramine. Anal Bioanal Chem 2020; 412:8135-8144. [PMID: 32914397 DOI: 10.1007/s00216-020-02944-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/17/2020] [Accepted: 09/04/2020] [Indexed: 12/26/2022]
Abstract
Immunochromatographic assay (ICA) has been used widely for the onsite monitoring of illegal additives due to its simplicity, speed, and low cost. However, a scanner is commonly required for ICA to achieve quantitative results. In this work, we developed a visual semi-quantitative ICA for sibutramine, a banned additive in diet foods, without the need for a scanner for measurement. Monoclonal antibodies specific for sibutramine were raised and conjugated with upconversion nanoparticles (UCNPs) as the luminescent tracer. ICA was developed by employing multiple test lines to achieve the semi-quantitative detection of sibutramine. Based on the optimal conditions, the cutoff levels (limit of quantitation, LOQ) of T1 line, T2 line, T3 line, and T4 line were 0.02 μg/mL, 0.15 μg/mL, 1.0 μg/mL, and 7.5 μg/mL, respectively, in buffer system. The ICA demonstrated a LOQ at 0.2 mg/kg for sibutramine in diet food samples. The assay (including pretreatment) can be finished within 30 min without the aid of other instruments, except a laser pen. No false positive or false negative results were observed. The results indicated that the proposed method was reliable, simple, and rapid for the screening of sibutramine abuse in diet food samples.
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Affiliation(s)
- Shi-Wei Zhang
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, Guangdong, China.,National Nutrition Food Testing Center, Shenzhen Academy of Metrology and Quality Inspection, Shenzhen, 518055, Guangdong, China
| | - Yan-Yan Sun
- Department of Anaesthesiology, Shenzhen University General Hospital, Shenzhen, 518055, Guangdong, China.
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Hong Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Zhen-Feng Li
- Department of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California Davis, Davis, CA, 95616, USA
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, Guangdong, China.
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Sun YM, Zhang DS, Feng YF, Wang Y, Xu ZW. [Retrospective investigation of patients receiving additional surgery after endoscopic non-curative resection for early colorectal cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:486-491. [PMID: 32842429 DOI: 10.3760/cma.j.cn.441530-20190612-00239] [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] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Objective: To investigate the clinical application of additional surgery after non-curative endoscopic resection for early colorectal cancer. Methods: A retrospectively descriptive cohort study was conducted. Inclusion criteria: (1) pathologically confirmed primary colorectal adenocarcinoma;(2) receiving additional surgery after endoscopic resection; (3) semi-elective operation. Exclusion criteria: familial adenomatous polyposis, appendiceal neoplasms, anal canal neoplasms, neuroendocrine tumors, and surgery because of perforation or bleeding after endoscopic resection. Indications of additional surgery: (1) pathologically positive lateral or basal resection margin; (2) submucosal invasion depth ≥ 1000 μm; (3) lymphovascular invasion; (4) poorly differentiated, undifferentiated or mucinous adenocarcinoma; (5) more than grade G2 in tumor budding; (6) incomplete resection or piecemeal specimen with margin impossible to evaluate; (7) patient's consent due to undetermined pathology. According to the above criteria, clinical data of 92 patients at the Colorectal Surgery Department, the First Affiliated Hospital of Nanjing Medical University between January 2013 and December 2018 were collected. Demographic data, pathological examinations, operative methods and outcomes were analyzed. Results: There were 61 (66.3%) male and 31 female (33.7%) patients with an average age of (58.2±10.7) years. The average BMI was (23.8±3.5) kg/m(2). The lesions located in the right-sided colon, left-sided colon and rectum in 19, 37 and 36 patients respectively. Sixteen patients received endoscopic snare resection, 45 received endoscopic mucosal resection and 31 received endoscopic submucosal dissection. Reasons for additional surgery included endoscopic specimen with pathologically positive margin (n=22, 23.9%), submucosal invasion depth ≥ 1000 μm (n=9, 9.8%), lymphovascular invasion (n=4, 4.3%), poorly differentiated, undifferentiated or mucinous adenocarcinoma (n=5, 5.4%), piecemeal resection (n=13, 14.1%), undetermined pathology (n=52, 56.5%). The median duration from endoscopic resection to additional surgery was 16 days. Thirty-four patients (37.0%) received preoperative endoscopic localization with carbon nanoparticles suspension injection and 5 (5.4%) were marked with titanium clip. Seventy-four patients (80.4%) received laparoscopic surgery, 17 (18.5%) received open surgery, while 1 patient (1.1%) was converted to open surgery due to missing titanium clip. Three patients (3.3%) were treated with transanal excision, 2 (2.2%) with bowel resection, and 87 (94.6%) with radical excision. After additional surgery, histopathological examination of surgical specimens revealed the presence of residual tumor in 5 patients (5.4%), lymph node metastasis in 8 (8.7%), lymphovascular invasion in 1 (1.1%) and tumor deposit in 1 (1.1%). Twelve patients (13.0%) developed postoperative complications, including 4 mid-low rectal cancer patients (4.3%) with anastomostic leakage or bleeding. After surgery, according to the TNM staging system, 83 patients (90.2%) were classified as TNM stage 0-I, 9 (9.8%) as TNM stage II-IV. One patient of stage IV with liver metastasis underwent concomitant hepatectomy. One patient of stage II received regular follow-up after operation. Seven cases of stage III and 1 of stage IV received postoperative chemotherapy. Eighty-five patients (92.4%) were followed up with a median time of 12.8 (IQR: 8.1, 24.3) months. No recurrence or metastasis was observed. Conclusions: Surgery is an effective salvage measure for non-curative endoscopic resection of early colorectal cancer. Since surgery may have complications, indications of the additional surgery should be considered carefully. Preoperative endoscopic localization should be performed in order to ensure the safety and efficacy of surgery.
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Affiliation(s)
- Y M Sun
- Department of Colorectal Surgery, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - D S Zhang
- Department of Colorectal Surgery, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Y F Feng
- Department of Colorectal Surgery, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Y Wang
- Department of Colorectal Surgery, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Z W Xu
- Department of Colorectal Surgery, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
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Xu ZL, Ye SL, Luo L, Hua X, Lai JX, Cai XP, Liang QW, Lei HT, Sun YM, Chen YP, Shen X. Fluorescent enzyme-linked immunoassay based on silane-doped carbon dots for sensitive detection of microcystin-LR in water and crucian samples. Sci Total Environ 2020; 708:134614. [PMID: 31806319 DOI: 10.1016/j.scitotenv.2019.134614] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/16/2019] [Accepted: 09/21/2019] [Indexed: 06/10/2023]
Abstract
In this work, a fluorescent nanoparticles labeling-free fluorescence enzyme-linked immunoassay (FELISA) has been established for the ultrasensitive detection of microcystin-LR (MC-LR) in water and fish samples. Polyclonal antibody against MC-LR was labeled with horseradish peroxidase (HRP) and used as signal probe for binding with analyte in sample or for coating antigen. After washing of the unbound antibody, the substrate system (2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonate) (ABTS)/H2O2) was added. The oxidation product of ABTS (ox-ABTS) catalyzed by HRP effectively caused the fluorescence quenching of subsequently added silane-doped carbon dots (Si-CDs), and the change in fluorescence intensity of Si-CDs was used to realize the quantitative detection of MC-LR. Under the optimum conditions, the Si-CDs based FELISA method showed a good linear relationship from 0.001 to 3.20 μg L-1 (R2 = 0.994) and provided a low detection limit of 0.6 ng L-1, which was approximately 30-fold lower than that of traditional indirect competitive ELISA. Average recovery values from 79.9% to 109.2% was obtained from spiked water and crucian samples, suggesting its potential application on the monitoring of MR-LR at a trace level.
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Affiliation(s)
- Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Song-Ling Ye
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Lin Luo
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Xiude Hua
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Jing-Xian Lai
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Xiang-Ping Cai
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Qing-Wen Liang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Hong-Tao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Yi-Ping Chen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Xing Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China.
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Fu HJ, Wang Y, Xiao ZL, Wang H, Li ZF, Shen YD, Lei HT, Sun YM, Xu ZL, Hammock B. A rapid and simple fluorescence enzyme-linked immunosorbent assay for tetrabromobisphenol A in soil samples based on a bifunctional fusion protein. Ecotoxicol Environ Saf 2020; 188:109904. [PMID: 31704326 PMCID: PMC7198468 DOI: 10.1016/j.ecoenv.2019.109904] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 10/29/2019] [Accepted: 10/31/2019] [Indexed: 05/20/2023]
Abstract
Tetrabromobisphenol A (TBBPA) is the largest brominated flame retardant which can be released to environment and cause long-term hazard. In this work, we developed a rapid and highly sensitive fluorescence enzyme-linked immunosorbent assay (FELISA) for monitoring of TBBPA in soil samples. TBBPA specific nanobody derived from camelid was fused with alkaline phosphatase to obtain the bi-functional fusion protein, which enable the specific binding of TBBPA and the generation of detection signal simultaneously. The assay showed an IC50 of 0.23 ng g-1, limit detection of 0.05 ng g-1 and linear range from 0.1 to 0.55 ng g-1 for TBBPA in soil samples. Due to the high resistance to organic solvents of the fusion protein, a simple pre-treatment by using 40% dimethyl sulfoxide (DMSO) as extract solvent can eliminate matrix effect and obtain good recoveries (ranging from 93.4% to 112.4%) for spiked soil samples. Good relationship between the results of the proposed FELISA and that of liquid chromatography tandem mass spectrometry (LC-MS/MS) was obtained, which indicated it could be a powerful analytical tool for determination of TBBPA to monitor human and environmental exposure.
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Affiliation(s)
- Hui-Jun Fu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Yu Wang
- Guangzhou Institute for Food Control, Guangzhou, 510410, China.
| | - Zhi-Li Xiao
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Hong Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Zhen-Feng Li
- Guangzhou Institute for Food Control, Guangzhou, 510410, China.
| | - Yu-Dong Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Hong-Tao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
| | - Bruce Hammock
- Department of Entomology and UCD Comprehensive Cancer Center, University of California, Davis, CA, 95616, United States.
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Long W, Mu X, Wang JY, Xu F, Yang J, Wang J, Sun S, Chen J, Sun YM, Wang H, Zhang XD. Dislocation Engineered PtPdMo Alloy With Enhanced Antioxidant Activity for Intestinal Injury. Front Chem 2019; 7:784. [PMID: 31803720 PMCID: PMC6873609 DOI: 10.3389/fchem.2019.00784] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 09/10/2019] [Accepted: 10/30/2019] [Indexed: 12/30/2022] Open
Abstract
Radiotherapy is the mainstay for abdomen and pelvis cancers treatment. However, high energy ray would inflict gastrointestinal (GI) system and adversely disrupt the treatment. The anti-oxidative agents provide a potential route for protecting body from radiation-induced injuries. Herein, highly catalytic nanocubes with dislocation structure are developed for treatment of intestinal injury. Structural and catalytic properties show that Mo incorporation can enhance antioxidant activity by dislocation structure in the alloy. In vitro studies showed that PtPdMo improved cell survival by scavenging radiation-induced ROS accumulation. Furthermore, after animals were exposed to lethal dose of radiation, the survival was increased by 50% with the PtPdMo i.p. treatment. Radioprotection mechanism revealed that PtPdMo alleviated the oxidative stress in multi-organs especially the small intestine by inhibiting intestinal epithelium apoptosis, reducing DNA strands breaks and enhancing repairing ability. In addition, PtPdMo protected hematopoietic system by improving the number of bone marrow and peripheral blood cells.
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Affiliation(s)
- Wei Long
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Xiaoyu Mu
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin, China
| | - Jun-Ying Wang
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin, China
| | - Fujuan Xu
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin, China
| | - Jiang Yang
- State Key Laboratory of Oncology in South China Collaborative Innovation Center for Cancer Medicine Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Jingya Wang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Si Sun
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin, China
| | - Jing Chen
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin, China
| | - Yuan-Ming Sun
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Hao Wang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Xiao-Dong Zhang
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin, China
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Yao CY, Xu ZL, Wang H, Zhu F, Luo L, Yang JY, Sun YM, Lei HT, Tian YX, Shen YD. High affinity antibody based on a rationally designed hapten and development of a chemiluminescence enzyme immunoassay for quantification of Alternariol in fruit Juice, maize and flour. Food Chem 2019; 283:359-366. [DOI: 10.1016/j.foodchem.2018.12.127] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 12/29/2018] [Accepted: 12/29/2018] [Indexed: 12/22/2022]
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Sun YM, Zhou JL, Wang L, Wu XN, Chen YP, Piao HX, Lu LG, Jiang W, Xu YQ, Feng B, Nan YM, Xie W, Chen GF, Zheng HW, Li H, Ding HG, Liu H, Lyu FD, Shao C, Wang TL, Ou XJ, Wang BQ, Chen SY, You H, Jia JD. [Qualitative pathological assessment of liver fibrosis regression after antiviral therapy in patients with chronic hepatitis B]. Zhonghua Gan Zang Bing Za Zhi 2019; 25:819-826. [PMID: 29325275 DOI: 10.3760/cma.j.issn.1007-3418.2017.11.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the methods for qualitative pathological assessment of dynamic changes in liver fibrosis/cirrhosis after antiviral therapy in patients with chronic hepatitis B (CHB), since antiviral therapy can partially reverse liver fibrosis and cirrhosis caused by hepatitis B and semi-quantitative, rather than qualitative, pathological assessment is often used for the research on liver fibrosis regression. Methods: Previously untreated CHB patients with liver fibrosis and cirrhosis were enrolled, and liver biopsy was performed before treatment and at 78 weeks after the antiviral therapy based on entecavir. The follow-up assessment was performed once every half a year. Based on the proportion of different types of fibrous septum, we put forward the new qualitative criteria called P-I-R classification (predominantly progressive, predominantly regressive, and indeterminate) for evaluating dynamic changes in liver fibrosis. This classification or Ishak fibrosis stage was used to evaluate the change in liver fibrosis after treatment and Ishak liver inflammation score was used to evaluate the change in liver inflammation after treatment. Results: A total of 112 CHB patients who underwent liver biopsy before and after treatment were enrolled, and among these patients, 71 with an Ishak stage of ≥3 and qualified results of live biopsy were included in the final analysis. Based on the P-I-R classification, 58% (41/71) were classified as predominantly progressive, 29% (21/71) were classified as indeterminate, and 13% (9/71) were classified as predominantly regressive; there were no significant differences between the three groups in alanine aminotransferase, aspartate aminotransferase, albumin, HBeAg positive rate, HBV DNA, and liver stiffness (P < 0.05). After treatment, the proportion of predominantly progressive, indeterminate, or predominantly regressive patients changed to 11% (8/71), 11% (8/71), and 78% (55/71), respectively. Among the 35 patients who had no change in Ishak stage after treatment, 72% (25/35) were classified as predominantly regressive and had certain reductions in the Laennec score, percentage of collagen area, and liver stiffness. Conclusion: This new P-I-R classification can be used to assess the dynamic changes in liver fibrosis after antiviral therapy in CHB patients.
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Affiliation(s)
- Y M Sun
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - J L Zhou
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - L Wang
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - X N Wu
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Y P Chen
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - H X Piao
- Infectious Department, Affiliated Hospital of Yanbian University, Yanji 133000, China
| | - L G Lu
- Department of Gastroenterology and Hepatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China
| | - W Jiang
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Y Q Xu
- Department of Digestive System, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China
| | - B Feng
- Hepatology Institute, Peking University People's Hospital, Beijing 100044, China
| | - Y M Nan
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Shijiazhuang 050051, China
| | - W Xie
- Center of Liver Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - G F Chen
- Second Liver Cirrhosis Diagnosis and Treatment Center, 302 Military Hospital of China, Beijing 100039, China
| | - H W Zheng
- Department of Infectious Disease, the Fifth Hospital of Shijiazhuang City, Shijiazhuang 050024, China
| | - H Li
- Department of Hepatopancreatobiliary and Splenic Medicine, Affiliated Hospital, Logistics University of People's Armed Police Force, Tianjin 300161, China
| | - H G Ding
- Department of Gastroenterology and Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - H Liu
- Department of Pathology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - F D Lyu
- Department of Pathology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - C Shao
- Department of Pathology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - T L Wang
- Department of Pathology, China-Japan Friendship Hospital, Beijing 100029, China
| | - X J Ou
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - B Q Wang
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - S Y Chen
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - H You
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - J D Jia
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
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Long W, Wang J, Yang J, Wu H, Wang J, Mu X, He H, Liu Q, Sun YM, Wang H, Zhang XD. Naturally-Derived PHA-L Protein Nanoparticle as a Radioprotector Through Activation of Toll-Like Receptor 5. J Biomed Nanotechnol 2019; 15:62-76. [PMID: 30480515 PMCID: PMC6300143 DOI: 10.1166/jbn.2019.2665] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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] [Indexed: 11/23/2022]
Abstract
High energy ray in medical diagnosis and therapy can benefit to patients, but can also cause the significant damages to biomolecules such as DNA, as well as free radical generation, inevitably leading to numerous side effects. Small molecular radioprotectors provide an effective route to preserve the healthy tissue and whole body from ionizing radiation, but always have a short circulation time in body. Inorganic nanoparticles show major protection effect but their heavy metal components considerably jeopardize translational promise due to suboptimal biocompatibility. Herein, we report a novel protein nanoparticle that can overcome limitations of both small molecular and inorganic nanoparticle radioprotectors and can be used as a radioprotector with spontaneous biocompatibility, outstanding pharmacokinetics and improvement on survival rate under exposure to γ-ray irradiation. PHA-L protein nanoparticle serves to clear excessive reactive oxygen species in vivo, prevents radiation-induced hematopoietic and gastrointestinal damages and boosts the survival rate of irradiated mice to ∼70%. A detailed study of the mechanism shows PHA-L protein nanoparticle can target and activate the toll-like receptor 5 in vitro and in vivo, and thus protect irradiated cells by immune response. Importantly, the PHA-L protein nanoparticle can perform highly efficient clearance while eliciting negligible toxicological response.
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Affiliation(s)
- Wei Long
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 238, Baidi Road, Tianjin 300192, China
| | - Junying Wang
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin 300350, China
| | - Jiang Yang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Hongying Wu
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 238, Baidi Road, Tianjin 300192, China
| | - Jingya Wang
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 238, Baidi Road, Tianjin 300192, China
| | - Xiaoyu Mu
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin 300350, China
| | - Hua He
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China
| | - Qiang Liu
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 238, Baidi Road, Tianjin 300192, China
| | - Yuan-Ming Sun
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 238, Baidi Road, Tianjin 300192, China
| | - Haichao Wang
- Laboratory of Emergency Medicine, North Shore University Hospital and The Feinstein Institute for Medical Research, Manhasset, New York 11030, USA
| | - Xiao-Dong Zhang
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin 300350, China
- Tianjin Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
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34
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Affiliation(s)
- Zhi-Li Xiao
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Wei Tian
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, People’s Republic of China
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35
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Fu HJ, Yuan LP, Shen YD, Liu YX, Liu B, Zhang SW, Xie ZX, Lei HT, Sun YM, Xu ZL. A full-automated magnetic particle-based chemiluminescence immunoassay for rapid detection of cortisol in milk. Anal Chim Acta 2018; 1035:129-135. [PMID: 30224130 DOI: 10.1016/j.aca.2018.06.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 06/02/2018] [Accepted: 06/07/2018] [Indexed: 11/16/2022]
Abstract
A sensitive full-automated micromagnetic particles (MMPs) based competitive chemiluminescent immunoassay (CLIA) was developed to detect cortisol in milk. Polyclonal antibody (pAb) with good specificity against cortisol was produced. The antigen (cortisol-OVA) was labeled with acridinium ester (cortisol-OVA-AE) as signal tracer. During the detection, the free cortisol in sample will compete with cortisol-OVA-AE for binding to pAb. To capture pAb, MMPs conjugated with goat anti-rabbit IgG was added. The whole immunoassay process (exclude sample pretreatment) was performed by automatic chemiluminescence immunoassay instrument, which could consume less test time (within 40 min) and avoid error from manual operation. The method showed a good detection limit of 0.12 ng/mL, a broad linear range from 0.42 to 72.27 ng/mL for cortisol detection, negligible cross-reactivity with related analogues and satisfied recovery (84.3%-102.3%) for spiked milk samples test. Simultaneously, since the results of proposed method had no significant difference with those of LC-MS/MS, the proposed method was confirmed to have a potential applicability for rapidly monitoring cortisol in the food.
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Affiliation(s)
- Hui-Jun Fu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China
| | - Li-Peng Yuan
- Guangdong Agriculture Industry Business Polytechnic College, Guangzhou, 510507, China
| | - Yu-Dong Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China
| | - Yi-Xin Liu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China
| | - Bo Liu
- Guangdong Agriculture Industry Business Polytechnic College, Guangzhou, 510507, China
| | - Shi-Wei Zhang
- Shenzhen Academy of Metrology & Quality Inspection, Shenzhen, 518055, China
| | - Zhuo-Xun Xie
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China
| | - Hong-Tao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou, 510642, China.
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36
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Chen ZJ, Zhang X, Wang BF, Rao MF, Wang H, Lei HT, Liu H, Zhang Y, Sun YM, Xu ZL. Production of Antigen-Binding Fragment against O, O-Diethyl Organophosphorus Pesticides and Molecular Dynamics Simulations of Antibody Recognition. Int J Mol Sci 2018; 19:ijms19051381. [PMID: 29734787 PMCID: PMC5983703 DOI: 10.3390/ijms19051381] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 04/29/2018] [Accepted: 05/03/2018] [Indexed: 01/26/2023] Open
Abstract
Immunoassay for pesticides is an emerging analytical method since it is rapid, efficient, sensitive, and inexpensive. In this study, a recombinant antigen-binding fragment (Fab) against a broad set of O,O-diethyl organophosphorus pesticides (DOPs) was produced and characterized. The κ chain and Fd fragment were amplified via PCR and inserted into the vector pComb3XSS and the soluble Fab on phagemid pComb3XSS was induced by isopropyl β-d-thiogalactoside in E. coli TOP 10F’. SDS-PAGE, Western blotting, and indirect competitive ELISA results indicated that Fab maintained the good characteristics of the parental mAb. To better understand antibody recognition, the three-dimensional (3D) model of Fab was built via homologous modeling and the interaction between Fab and DOPs was studied via molecular docking and dynamics simulations. The model clearly explained the interaction manner of Fab and DOPs, and showed that the Arg-L96 and Arg-H52 were mainly responsible for antibody binding. This work provided a foundation for further mutagenesis of Fab to improve its characteristics.
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Affiliation(s)
- Zi-Jian Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Xuan Zhang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Bing-Feng Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Mei-Fang Rao
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Hong Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Hong-Tao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Hui Liu
- Guangdong Institute of Product Quality Supervision and Inspection, Foshan 528300, China.
| | - Yan Zhang
- Guangdong Institute of Product Quality Supervision and Inspection, Foshan 528300, China.
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510640, China.
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37
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Song Y, Wei XQ, Li MY, Duan XW, Sun YM, Yang RL, Su XD, Huang RM, Wang H. Nutritional Composition and Antioxidant Properties of the Fruits of a Chinese Wild Passiflora foetida. Molecules 2018; 23:E459. [PMID: 29463053 PMCID: PMC6017921 DOI: 10.3390/molecules23020459] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 02/13/2018] [Accepted: 02/15/2018] [Indexed: 12/24/2022] Open
Abstract
The aim of this work was to evaluate the main nutrients and their antioxidant properties of a Chinese wild edible fruit, Passiflora foetida, collected from the ecoregion of Hainan province, China. The analytical results revealed that P. foetida fruits were rich in amino acids (1097 mg/100 g in total), minerals (595.75 mg/100 g in total), and unsaturated fatty acids (74.18 g/100 g in total fat). The lyophilized powder of edible portion contained the higher polyphenols content than the inedible portion powder. The UPLC-Q-TOF-MSE analysis of the extractable and non-extractable phenolics indicated the presence of 65 compounds including 39 free phenolics, 14 insoluble-glycoside-phenolics, and 22 insoluble-ester-phenolics. In addition, the non-extractable phenolics obtained by alkali hydrolysis showed significant antioxidant activities by/through DPPH and ABTS radical scavenging. These findings of P. foetida fruits, for the first time, suggest that these polyphenol-rich fruits may have potential nutraceutical efficacies.
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Affiliation(s)
- Ya Song
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Xiao-Qun Wei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Mei-Ying Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Xue-Wu Duan
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Rui-Li Yang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Xiang-Dong Su
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK.
| | - Ri-Ming Huang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Hong Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
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38
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Qiao Y, Liu Y, Liu H, Li Y, Long W, Wang J, Mu X, Chen J, Liu H, Bai X, Liu L, Sun YM, Liu Q, Guo M, Zhang XD. Fluorescence enhancement of gold nanoclustersviaZn doping for biomedical applications. RSC Adv 2018; 8:7396-7402. [PMID: 35539114 PMCID: PMC9078413 DOI: 10.1039/c7ra13072d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 01/25/2018] [Indexed: 11/21/2022] Open
Abstract
Gold nanoclusters (NCs) have been widely used in bioimaging and cancer therapy due to their unique electronic structures and tunable luminescence. However, their weak fluorescence prevents potential biomedical application, and thus it is necessary to develop an effective route to enhance the fluorescence of gold NCs. In this work, we report the fluorescence enhancement of ultrasmall GSH-protected Au NCs by Zn atom doping. The fluorescence signal of Zn-doped Au NCs shows approximately 5-fold enhancement compared to pure Au NCs. Density functional theory (DFT) calculation shows that Zn doping can enhance the electronic states of the highest occupied molecular orbital (HOMO), leading to enhancement of visible optical transitions. In vitro experiments show that AuZn alloy NCs can enhance the cancer radiotherapy via producing reactive oxygen species (ROS) and don't cause significant cytotoxicity. In vivo imaging indicates AuZn alloy NCs have significant passive targeting capability with high tumor uptake. Moreover, nearly 80% of GSH-protected AuZn alloy NCs can be rapidly eliminated via urine excretion. Fluorescence enhancement of gold nanoclusters via Zn doping.![]()
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39
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Dong XX, Yang JY, Luo L, Zhang YF, Mao C, Sun YM, Lei HT, Shen YD, Beier RC, Xu ZL. Portable amperometric immunosensor for histamine detection using Prussian blue-chitosan-gold nanoparticle nanocomposite films. Biosens Bioelectron 2017; 98:305-309. [PMID: 28697442 PMCID: PMC5762249 DOI: 10.1016/j.bios.2017.07.014] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [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: 03/05/2017] [Revised: 06/28/2017] [Accepted: 07/05/2017] [Indexed: 10/19/2022]
Abstract
Histamine (HA) is a biogenic amine that can accumulate to high concentration levels in food as a result of microbial activity and can cause toxic effects in consumers. In this work, a portable electrochemical immunosensor capable of detecting HA with high sensitivity and selectivity was developed. Prussian blue-chitosan-gold nanoparticle (PB-CS-AuNP) nanocomposite films with excellent biocompatibility were synthesized and characterized by scanning electron microscopy and energy dispersive X-ray analysis. The PB-CS-AuNP were coated onto a screen-printed electrode by one-step electrodeposition and used to conjugate the HA ovalbumin conjugate (HA-Ag). HA was determined by a competition between the coating HA-Ag and the HRP labeled HA antibody (HRP-HA-Ab). After careful optimization of assay conditions and Box-Behnken analysis, the developed immunosensor showed a linear range from 0.01 to 100μg/mL for HA in fish samples. The average recoveries from spiked samples ranged from 97.25% to 105%. The biosensor also showed good specificity, reproducibility, and stability, indicating its potential application in monitoring HA in a simple and low cost manner.
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Affiliation(s)
- Xiu-Xiu Dong
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Jin-Yi Yang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Lin Luo
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Yi-Feng Zhang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Chuanbin Mao
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA; School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China.
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Hong-Tao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Yu-Dong Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Ross C Beier
- US Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, College Station, TX 77845, USA
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China.
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40
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Sun YM, Li GY, He SF, Lu HY. [Analysis of the characteristics and HIV/syphilis/HCV infection among new narcotic users in Beijing, 2010-2016]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 51:954-956. [PMID: 29037001 DOI: 10.3760/cma.j.issn.0253-9624.2017.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- Y M Sun
- Department of HIV/STDs Prevention and Control, Beijing Center for Diseases Control and Prevention, Beijing 100013, China
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41
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Sun YM, Sun WD, Lu HY, Xin RL, He SF, Zhang Q, Yue H, Fan XG, Ma XY. [Surveillance for HIV infection in MSM selected through respondent driven sampling in Beijing, 2005-2012]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 37:1383-1391. [PMID: 27765131 DOI: 10.3760/cma.j.issn.0254-6450.2016.10.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the HIV prevalence among men who have sex with men (MSM) and discuss the feasibility of respondent driven sampling (RDS) as a tool to conduct long term HIV surveillance in MSM in Beijing. Methods: From 2005 to 2012 RDS was used to recruit MSM for face-to-face interview with structured questionnaire to collect their demographic characteristics and HIV risk-related behavior. Blood samples were collected from them for HIV test. Results: A total of 427, 540, 607, 614, 616, 602, 579 and 600 MSM were surveyed, respectively, from 2005 to 2012. The HIV infection prevalence increased from 4.2%(95%CI: 1.9-7.0) in 2005 to 10.1% (95%CI: 7.2-13.2) in 2012 (P=0.02). Meanwhile, HIV prevalence substantially increased among MSM aged >25 years, in floating population and with lower education level (≤high school), from 6.4%(95%CI: 2.2-9.5), 3.3%(95%CI: 1.8-5.4) and 5.5% (95%CI: 2.2-8.9) in 2005 to 7.6% (95%CI: 5.4-10.3, P=0.04), 10.7% (95% CI: 7.8-14.6, P=0.04) and 10.4% (95% CI:7.2-14.3, P=0.04) in 2012, respectively. Moreover, the HIV infection prevalence in MSM aged ≤25 years old and with higher education level (>high school) increased from 1.7%(95%CI: 0.4-3.1) in 2009 and 1.1%(95%CI: 0.2-1.7) in 2007 to 13.7%(95%CI: 7.2-20.4) and 9.1%(95%CI: 4.7-13.8) in 2012, respectively, the differences were not significant. Furthermore, the HIV infection prevalence in MSM who had 2-9 male sex partners in the last six months increased from 4.0% (95% CI: 1.0-8.0) in 2005 to 12.6% (95% CI: 8.7-16.7) in 2012 (P=0.02). Conclusions: Studies have shown that RDS is an effective and feasible sampling method for long term HIV surveillance in MSM. The HIV infection prevalence in MSM in Beijing increased from 2005 to 2012, especially among those with older age, in floating population and with lower educational level. More attention should be paid to MSM with younger age and with higher educational level.
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Affiliation(s)
- Y M Sun
- HIV/STD Department, Beijing Center for Disease Control and Prevention, Beijing 100013, China
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42
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Xiao ZL, Wang YL, Shen YD, Xu ZL, Dong JX, Wang H, Situ C, Wang F, Yang JY, Lei HT, Sun YM. Specific Monoclonal Antibody-Based Enzyme Immunoassay for Sensitive and Reliable Detection of Alternaria Mycotoxin Iso-Tenuazonic Acid in Food Products. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-1033-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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43
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Chen SY, Sun YM, You H. [New advances in the diagnosis of liver fibrosis]. Zhonghua Gan Zang Bing Za Zhi 2017; 25:563-565. [PMID: 29056003 DOI: 10.3760/cma.j.issn.1007-3418.2017.08.002] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Various chronic liver diseases may progress to liver fibrosis or liver cirrhosis. Assessment of the degree of liver fibrosis helps with clinical decision-making, prognosis prediction, and evaluation of therapeutic effect, and therefore, accurate diagnosis and evaluation of the degree of liver fibrosis is a research hotspot at present. The advances in the diagnosis of liver fibrosis in recent years include the publication of international consensuses and guidelines, evaluation of the outcome of liver fibrosis after antiviral therapy, development of the diagnosis of liver fibrosis in patients with non-viral hepatitis, and constant update of noninvasive diagnostic techniques.
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Affiliation(s)
- S Y Chen
- Liver research center, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
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44
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Liu Y, Wang LT, Zhou K, Eremin SA, Huang XA, Sun YM, Xu ZL, Lei HT. Rapid and homologous immunoassay for the detection of herbicide propisochlor in water. FOOD AGR IMMUNOL 2017. [DOI: 10.1080/09540105.2017.1359499] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Yao Liu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, National-Local Joint Engineering Research Center for Processing and Safety Control of Livestock and Poultry Products, College of Food Science, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Lan-Teng Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, National-Local Joint Engineering Research Center for Processing and Safety Control of Livestock and Poultry Products, College of Food Science, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Kai Zhou
- Guangdong Provincial Key Laboratory of Food Quality and Safety, National-Local Joint Engineering Research Center for Processing and Safety Control of Livestock and Poultry Products, College of Food Science, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Sergei A. Eremin
- Faculty of Chemistry, MV Lomonosov Moscow State University, Moscow, Russia
| | - Xin-An Huang
- Tropical Medicine Institute and South China Chinese Medicine Collaborative Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, People’s Republic of China
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, National-Local Joint Engineering Research Center for Processing and Safety Control of Livestock and Poultry Products, College of Food Science, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, National-Local Joint Engineering Research Center for Processing and Safety Control of Livestock and Poultry Products, College of Food Science, South China Agricultural University, Guangzhou, People’s Republic of China
| | - Hong-Tao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, National-Local Joint Engineering Research Center for Processing and Safety Control of Livestock and Poultry Products, College of Food Science, South China Agricultural University, Guangzhou, People’s Republic of China
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45
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Deng J, Zhong YF, Wu YP, Luo Z, Sun YM, Wang GE, Kurihara H, Li YF, He RR. Carnosine attenuates cyclophosphamide-induced bone marrow suppression by reducing oxidative DNA damage. Redox Biol 2017; 14:1-6. [PMID: 28826042 PMCID: PMC5565745 DOI: 10.1016/j.redox.2017.08.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [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: 07/29/2017] [Accepted: 08/03/2017] [Indexed: 11/29/2022] Open
Abstract
Oxidative DNA damage in bone marrow cells is the main side effect of chemotherapy drugs including cyclophosphamide (CTX). However, not all antioxidants are effective in inhibiting oxidative DNA damage. In this study, we report the beneficial effect of carnosine (β-alanyl-l-histidine), a special antioxidant with acrolein-sequestering ability, on CTX-induced bone marrow cell suppression. Our results show that carnosine treatment (100 and 200 mg/kg, i.p.) significantly inhibited the generation of reactive oxygen species (ROS) and 8-hydroxy-2′-deoxyguanosine (8-oxo-dG), and decreased chromosomal abnormalities in the bone marrow cells of mice treated with CTX (20 mg/kg, i.v., 24 h). Furthermore, carnosine evidently mitigated CTX-induced G2/M arrest in murine bone marrow cells, accompanied by reduced ratios of p-Chk1/Chk1 and p-p53/p53 as well as decreased p21 expression. In addition, cell apoptosis caused by CTX was also suppressed by carnosine treatment, as assessed by decreased TUNEL-positive cell counts, down-regulated expressions of Bax and Cyt c, and reduced ratios of cleaved Caspase-3/Caspase-3. These results together suggest that carnosine can protect murine bone marrow cells from CTX-induced DNA damage via its antioxidant activity. Bone marrow cells suppression induced by CTX is associated with the increasement of ROS and oxidative DNA damage. Carnosine attenuates CTX-elevated oxidative DNA damage and bone marrow cells suppression. Favorable prospects of clinical applications for carnosine in combination with CTX.
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Affiliation(s)
- Jie Deng
- Anti-stress and Health Research Center, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, PR China; Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou, Guangdong 510632, PR China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, Guangdong 510632, PR China
| | - Yi-Fei Zhong
- Anti-stress and Health Research Center, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, PR China; Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou, Guangdong 510632, PR China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, Guangdong 510632, PR China
| | - Yan-Ping Wu
- Anti-stress and Health Research Center, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, PR China; Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou, Guangdong 510632, PR China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, Guangdong 510632, PR China
| | - Zhuo Luo
- Anti-stress and Health Research Center, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, PR China; Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou, Guangdong 510632, PR China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, Guangdong 510632, PR China
| | - Yuan-Ming Sun
- Guangdong Provincial Key Lab of Food Safety and Quality, South China Agricultural University, Guangzhou, Guangdong 510642, PR China
| | - Guo-En Wang
- Anti-stress and Health Research Center, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, PR China; Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou, Guangdong 510632, PR China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, Guangdong 510632, PR China
| | - Hiroshi Kurihara
- Anti-stress and Health Research Center, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, PR China; Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou, Guangdong 510632, PR China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, Guangdong 510632, PR China
| | - Yi-Fang Li
- Anti-stress and Health Research Center, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, PR China; Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou, Guangdong 510632, PR China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, Guangdong 510632, PR China
| | - Rong-Rong He
- Anti-stress and Health Research Center, College of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, PR China; Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou, Guangdong 510632, PR China; Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, Guangdong 510632, PR China
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Dong XX, Yuan LP, Liu YX, Wu MF, Liu B, Sun YM, Shen YD, Xu ZL. Development of a progesterone immunosensor based on thionine-graphene oxide composites platforms: Improvement by biotin-streptavidin-amplified system. Talanta 2017; 170:502-508. [DOI: 10.1016/j.talanta.2017.04.054] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/10/2017] [Accepted: 04/21/2017] [Indexed: 01/06/2023]
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Wan YK, Sang W, Chen B, Yang YG, Zhang LQ, Sun AN, Liu YJ, Xu Y, Cai YP, Wang CB, Shen YF, Jiang YW, Zhang XY, Xu W, Hong M, Chen T, Xu RR, Li F, Xu YL, Xue Y, Lu YL, He ZM, Dong WM, Chen Z, Ji MH, Yang YY, Zhai LJ, Zhao Y, Wu GQ, Ding JH, Cheng J, Cai WB, Sun YM, Ouyang J. [Distribution and drug resistance of pathogens at hematology department of Jiangsu Province from 2014 to 2015: results from a multicenter, retrospective study]. Zhonghua Xue Ye Xue Za Zhi 2017; 38:602-606. [PMID: 28810329 PMCID: PMC7342276 DOI: 10.3760/cma.j.issn.0253-2727.2017.07.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Indexed: 11/05/2022]
Abstract
Objective: To describe the distribution and drug resistance of pathogens at hematology department of Jiangsu Province from 2014 to 2015 to provide reference for empirical anti-infection treatment. Methods: Pathogens were from hematology department of 26 tertiary hospitals in Jiangsu Province from 2014 to 2015. Antimicrobial susceptibility testing was carried out according to a unified protocol using Kirby-Bauer method or agar dilution method. Collection of drug susceptibility results and corresponding patient data were analyzed. Results: The separated pathogens amounted to 4 306. Gram-negative bacteria accounted for 64.26%, while the proportions of gram-positive bacteria and funguses were 26.99% and 8.75% respectively. Common gram-negative bacteria were Escherichia coli (20.48%) , Klebsiella pneumonia (15.40%) , Pseudomonas aeruginosa (8.50%) , Acinetobacter baumannii (5.04%) and Stenotropho-monas maltophilia (3.41%) respectively. CRE amounted to 123 (6.68%) . Common gram-positive bacteria were Staphylococcus aureus (4.92%) , Staphylococcus hominis (4.88%) and Staphylococcus epidermidis (4.71%) respectively. Candida albicans were the main fungus which accounted for 5.43%. The rates of Escherichia coli and Klebsiella pneumonia resistant to carbapenems were 3.5%-6.1% and 5.0%-6.3% respectively. The rates of Pseudomonas aeruginosa resistant to tobramycin and amikacin were 3.2% and 3.3% respectively. The resistant rates of Acinetobacter baumannii towards tobramycin and cefoperazone/sulbactam were both 19.2%. The rates of Stenotrophomonas maltophilia resistant to minocycline and sulfamethoxazole were 3.5% and 9.3% respectively. The rates of Staphylococcus aureus, Enterococcus faecium and Enterococcus faecalis resistant wards vancomycin were 0, 6.4% and 1.4% respectively; also, the rates of them resistant to linezolid were 1.2%, 0 and 1.6% respectively; in addition, the rates of them resistant to teicoplanin were 2.8%, 14.3% and 8.0% respectively. Furthermore, MRSA accounted for 39.15% (83/212) . Conclusions: Pathogens were mainly gram-negative bacteria. CRE accounted for 6.68%. The rates of Escherichia coli and Klebsiella pneumonia resistant to carbapenems were lower compared with other antibacterial agents. The rates of gram-positive bacteria resistant to vancomycin, linezolid and teicoplanin were still low. MRSA accounted for 39.15%.
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Affiliation(s)
- Y K Wan
- The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - J Ouyang
- The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
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Mu X, Wang JY, Bai X, Xu F, Liu H, Yang J, Jing Y, Liu L, Xue X, Dai H, Liu Q, Sun YM, Liu C, Zhang XD. Black Phosphorus Quantum Dot Induced Oxidative Stress and Toxicity in Living Cells and Mice. ACS Appl Mater Interfaces 2017; 9:20399-20409. [PMID: 28553710 DOI: 10.1021/acsami.7b02900] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Black phosphorus (BP), as an emerging successor to layered two-dimensional materials, has attracted extensive interest in cancer therapy. Toxicological studies on BP are of great importance for potential biomedical applications, yet not systemically explored. Herein, toxicity and oxidative stress of BP quantum dots (BPQDs) at cellular, tissue, and whole-body levels are evaluated by performing the systemic in vivo and in vitro experiments. In vitro investigations show that BPQDs at high concentration (200 μg/mL) exhibit significant apoptotic effects on HeLa cells. In vivo investigations indicate that oxidative stress, including lipid peroxidation, reduction of catalase activity, DNA breaks, and bone marrow nucleated cells (BMNC) damage, can be induced by BPQDs transiently but recovered gradually to healthy levels. No apparent pathological damages are observed in all organs, especially in the spleen and kidneys, during the 30-day period. This work clearly shows that BPQDs can cause acute toxicities by oxidative stress responses, but the inflammatory reactions can be recovered gradually with time for up to 30 days. Thus, BPQDs do not give rise to long-term appreciable toxicological responses.
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Affiliation(s)
- Xiaoyu Mu
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Institute of Advanced Materials Physics, School of Sciences, Tianjin University , Tianjin 300350, China
| | - Jun-Ying Wang
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Institute of Advanced Materials Physics, School of Sciences, Tianjin University , Tianjin 300350, China
| | - Xueting Bai
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Institute of Advanced Materials Physics, School of Sciences, Tianjin University , Tianjin 300350, China
| | - Fujuan Xu
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Institute of Advanced Materials Physics, School of Sciences, Tianjin University , Tianjin 300350, China
| | - Haixia Liu
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Institute of Advanced Materials Physics, School of Sciences, Tianjin University , Tianjin 300350, China
| | - Jiang Yang
- Environment, Energy and Natural Resources Center, Department of Environmental Science and Engineering, Fudan University , Shanghai 200433, China
| | - Yaqi Jing
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Institute of Advanced Materials Physics, School of Sciences, Tianjin University , Tianjin 300350, China
| | - Lingfang Liu
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Institute of Advanced Materials Physics, School of Sciences, Tianjin University , Tianjin 300350, China
| | - Xuhui Xue
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin 300192, China
| | - Haitao Dai
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Institute of Advanced Materials Physics, School of Sciences, Tianjin University , Tianjin 300350, China
| | - Qiang Liu
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin 300192, China
| | - Yuan-Ming Sun
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin 300192, China
| | - Changlong Liu
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Institute of Advanced Materials Physics, School of Sciences, Tianjin University , Tianjin 300350, China
| | - Xiao-Dong Zhang
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Institute of Advanced Materials Physics, School of Sciences, Tianjin University , Tianjin 300350, China
- Tianjin Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072, China
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Zhou K, Liu Y, Li WQ, Liu GL, Wei N, Sun YM, Bai WD, Xu ZL. An Improved HPLC-FLD for Fast and Simple Detection of Ethyl Carbamate in Soy Sauce and Prediction of Precursors. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-0948-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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50
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Zhou HR, Sun YM, Zhou Q, Chen L. [Adult bilateral small cell carcinoma of parotid gland: a case report]. Zhonghua Zhong Liu Za Zhi 2017; 39:297-298. [PMID: 28550672 DOI: 10.3760/cma.j.issn.0253-3766.2017.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- H R Zhou
- Department of Oncology, Lanzhou General Hospital of Lanzhou Military Command, Lanzhou 730050, China
| | - Y M Sun
- Department of Clinical Medical College, Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - Q Zhou
- Department of Clinical Medical College, Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - L Chen
- Department of Gastroenterology, Lanzhou General Hospital of Lanzhou Military Command, Lanzhou 730050, China
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