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Fang B, Liu X, Peng J, Li Y, Gong Z, Lai W. Dramatic fluorescence enhancement of PCN-224 and its application in "turn off" immunoassay for sensitive detection of E. coli O157:H7 in milk. Food Chem 2024; 445:138749. [PMID: 38368699 DOI: 10.1016/j.foodchem.2024.138749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/15/2024] [Accepted: 02/11/2024] [Indexed: 02/20/2024]
Abstract
In this study, a type of luminescent porous coordination network-224 (PCN-224) in alkaline conditions was synthesized with the dramatic fluorescence enhancement by 20.4 times, which was explained by the fact that the decrease of Zr4+ content in alkaline conditions resulted in the partial recovery of the electron cloud density of 4,4',4'',4'''-(Porphine-5,10,15,20-tetrayl) tetrakis(benzoic acid) (TCPP). Given the large overlap between the excitation spectrum of PCN-224 and the absorption band of Ag nanoparticles (Ag NPs), the coating of the Ag layer on PCN-224 triggered the fluorescence quenching effect, which was applied to "turn off" fluorescence immunoassay for sensitive detection of Escherichia coli O157:H7 (E. coli O157:H7) in milk. The proposed immunoassay reached a low limit of detection (LOD) of 3.3 × 102 CFU mL-1, 29.7 times more sensitive than the conventional ELISA. It will provide a novel alternative strategy for sensitively detecting pathogenic bacteria in the field of food safety.
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Affiliation(s)
- Bolong Fang
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Xin Liu
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Juan Peng
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Yuzhi Li
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China; Key Laboratory of Detection Technology of Focus Chemical Hazards in Animal-derived Food for State Market Regulation, Wuhan 430075, China
| | - Zhiyong Gong
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Nanchang University, Nanchang 330047, China
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2
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Shu X, Guo P, Zhang G, Zhang W, Hu H, Peng J, Xiong Y, Ma B, Lai W. Novel litchi-like Au-Ag nanospheres driven dual-readout lateral flow immunoassay for sensitive detection of pyrimethanil. Food Chem 2024; 450:139380. [PMID: 38640535 DOI: 10.1016/j.foodchem.2024.139380] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 04/10/2024] [Accepted: 04/13/2024] [Indexed: 04/21/2024]
Abstract
Pyrimethanil (PYR) is a fungicide that is harmful to consumers when present in foods at concentrations greater than maximum permitted residue levels. High-performance immunoprobes and dual-readout strategy may be useful for constructing sensitive lateral flow immunoassay (LFIA). Herein, the prepared litchi-like Au-Ag bimetallic nanospheres (LBNPs) exhibited high mass extinction coefficients and fluorescence quenching constants. Benefiting from LBNPs and dual-readout mode, the limits of detection of LBNPs-CM-LFIA and LBNPs-FQ-LFIA for PYR were 0.957 and 0.713 ng mL-1, which were 2.54- and 3.41-fold lower than that of gold nanoparticles-based LFIA, respectively. The limits of quantitation of LBNPs-CM-LFIA and LBNPs-FQ-LFIA were 3.740 and 1.672 ng mL-1, respectively. LBNPs-LFIA was applied to detect PYR in cucumber and grape samples with satisfactory recovery (90%-111%). LBNPs-LFIA showed good agreement with LC-MS/MS for the detection of PYR in the samples. Accordingly, this sensitive and accurate dual-readout LFIA based on LBNPs can be effectively applied for food safety.
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Affiliation(s)
- Xinhui Shu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Ping Guo
- Jiangxi General Institute of Testing and Certification, Nanchang 330029, China
| | - Gan Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Wei Zhang
- Jiangxi General Institute of Testing and Certification, Nanchang 330029, China
| | - Hong Hu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Juan Peng
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Bingfeng Ma
- Jiangxi General Institute of Testing and Certification, Nanchang 330029, China.
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
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Chen Z, Tang Y, Guo P, Zhang W, Peng J, Xiong Y, Ma B, Lai W. Integration of a biocompatible metal-phenolic network and fluorescence microspheres as labels for sensitive and stable detection of carbendazim with a lateral flow immunoassay. Food Chem 2024; 450:139260. [PMID: 38626714 DOI: 10.1016/j.foodchem.2024.139260] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 04/02/2024] [Accepted: 04/03/2024] [Indexed: 04/18/2024]
Abstract
High fluorescence intensity microspheres such as aggregation-induced emission fluorescence microspheres (AIEFM) have improved the sensitivity of lateral flow immunoassay (LFIA). The preparation of immune probes in LFIA usually adopts the chemical coupling strategy with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide for antibody coupling, which has the problems of low coupling efficiency, tedious coupling process, and poor repeatability. A biocompatible metal-phenolic network (MPN), which contains large amounts of phenols and galloyl groups, could easily, quickly, and stably couple with antibodies. Herein, we proposed a strategy based on MPN modification on ultrabright AIEFM surface as a novel label for the rapid detection of carbendazim. The limit of detection of AIEFM@MPN-LFIA was 0.019 ng/mL, which was 4.9 times lower than that of AIEFM-LFIA. In spiked samples, the average recoveries of AIEFM@MPN-LFIA ranged from 80% to 118% (coefficient of variation <13.45%). Therefore, AIEFM@MPN was a promising signal label that could improve the detection performance of LFIA.
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Affiliation(s)
- Zongyou Chen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Yanyan Tang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Ping Guo
- Jiangxi General Institute of Testing and Certification, Nanchang 330029, China
| | - Wei Zhang
- Jiangxi General Institute of Testing and Certification, Nanchang 330029, China
| | - Juan Peng
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Bingfeng Ma
- Jiangxi General Institute of Testing and Certification, Nanchang 330029, China.
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
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Hu H, Zhang G, Liu J, Liu D, Deng S, Peng J, Lai W. Development of High-Performance and Multifunctional Nanoparticles Powered the Integrated Diagnosis and Treatment of Escherichia coli O157:H7. Anal Chem 2024; 96:5205-5214. [PMID: 38481140 DOI: 10.1021/acs.analchem.3c05519] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Pathogenic diseases that trigger food safety remain a noteworthy concern due to substantial public health, economic, and social burdens worldwide. It is vital for developing an integrated diagnosis and treatment strategy for bacteria, which could achieve quick detection of pathogenic bacteria and the inhibition of multidrug-resistant bacteria. Herein, we reported an organic molecule (M-3) possessed strong light capture capacity, emerging a low energy gap and ΔEST. Subsequently, M-3 was integrated into a nanostructured system (BTBNPs) with excellent ROS generation, light absorption capability, and photothermal performance. Reactive oxygen species (ROS) generated by BTBNPs were mainly free radicals from a type I mechanism, and the high photothermal conversion efficiency of BTBNPs was 41.26%. Benefiting from these advantages of BTBNPs, BTBNPs could achieve a ∼99% antibacterial effect for Escherichia coli O157:H7 with 20 μM dosage and 5 min of irradiation. Furthermore, the limit of detection (LoD) of the proposed BTBNPs-LFIA (colorimetric and photothermal modalities) for detecting E. coli O157:H7 was 4105 and 419 CFU mL-1, respectively. Overall, this work is expected to provide a new and sophisticated perspective for integrated diagnosis and treatment systems regarding pathogenic bacteria.
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Affiliation(s)
- Hong Hu
- State Key Laboratory of Food Science and Resources, Nanchang University, 330047 Nanchang, China
| | - Gan Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, 330047 Nanchang, China
| | - Jie Liu
- State Key Laboratory of Food Science and Resources, Nanchang University, 330047 Nanchang, China
| | - Daofeng Liu
- Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease, Jiangxi Province Center for Disease Control and Prevention, 555 East Beijing Road, Nanchang 330029, China
| | - Shengliang Deng
- Institute of Microbiology, Jiangxi Academy of Sciences, 330096 Nanchang, China
| | - Juan Peng
- State Key Laboratory of Food Science and Resources, Nanchang University, 330047 Nanchang, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, 330047 Nanchang, China
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Lin WP, Mu X, Chen SH, He CJ, Li HH, Sun CW, Bian HN, Lai W, Huang ZF. [Clinical characteristics of 11 patients with Vibrio vulnificus infection and the establishment of a rapid diagnosis procedure for this disease]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2024; 40:266-272. [PMID: 38548397 DOI: 10.3760/cma.j.cn501225-20230803-00036] [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: 04/02/2024]
Abstract
Objective: To analyze the clinical characteristics of patients with Vibrio vulnificus infection, share diagnosis and treatment experience, and establish a rapid diagnosis procedure for this disease. Methods: This study was a retrospective case series study. From January 2009 to November 2022, 11 patients with Vibrio vulnificus infection who met the inclusion criteria were admitted to the Department of Burns and Wound Repair of Guangdong Provincial People's Hospital Affiliated to Southern Medical University. The gender, age, time of onset of illness, time of admission, time of diagnosis, route of infection, underlying diseases, affected limbs, clinical manifestations and signs on admission, white blood cell count, hemoglobin, platelet count, C-reactive protein (CRP), alanine transaminase (ALT), aspartate transaminase (AST), creatinine, procalcitonin, albumin, N-terminal pro-B-type natriuretic peptide (NT-proBNP), and blood sodium levels on admission, culture results and metagenomic next-generation sequencing (mNGS) results of pathogenic bacteria and the Vibrio vulnificus drug susceptibility test results during hospitalization, treatment methods, length of hospital stay, and outcomes of all patients were recorded. Comparative analysis was conducted on the admission time and diagnosis time of patients with and without a history of exposure to seawater/marine products, as well as the fatality ratio and amputation of limbs/digits ratio of patients with and without early adequate antibiotic treatment. For the survived patients with hand involvement, the hand function was assessed using Brunnstrom staging at the last follow-up. Based on patients' clinical characteristics and treatment conditions, a rapid diagnosis procedure for Vibrio vulnificus infection was established. Results: There were 7 males and 4 females among the patients, aged (56±17) years. Most of the patients developed symptoms in summer and autumn. The admission time was 3.00 (1.00, 4.00) d after the onset of illness, and the diagnosis time was 4.00 (2.00, 8.00) d after the onset of illness. There were 7 and 4 patients with and without a history of contact with seawater/marine products, respectively, and the admission time of these two types of patients was similar (P>0.05). The diagnosis time of patients with a history of contact with seawater/marine products was 2.00 (2.00, 5.00) d after the onset of illness, which was significantly shorter than 9.00 (4.25, 13.00) d after the onset of illness for patients without a history of contact with seawater/marine products (Z=-2.01, P<0.05). Totally 10 patients had underlying diseases. The affected limbs were right-hand in 8 cases, left-hand in 1 case, and lower limb in 2 cases. On admission, a total of 9 patients had fever; 11 patients had pain at the infected site, and redness and swelling of the affected limb, and 9 patients each had ecchymosis/necrosis and blisters/blood blisters; 6 patients suffered from shock, and 2 patients developed multiple organ dysfunction syndrome. On admission, there were 8 patients with abnormal white blood cell count, hemoglobin, and albumin levels, 10 patients with abnormal CRP, procalcitonin, and NT-proBNP levels, 5 patients with abnormal creatinine and blood sodium levels, and fewer patients with abnormal platelet count, ALT, and AST levels. During hospitalization, 4 of the 11 wound tissue/exudation samples had positive pathogenic bacterial culture results, and the result reporting time was 5.00 (5.00, 5.00) d; 4 of the 9 blood specimens had positive pathogenic bacterial culture results, and the result reporting time was 3.50 (1.25, 5.00) d; the mNGS results of 7 wound tissue/exudation or blood samples were all positive, and the result reporting time was 1.00 (1.00, 2.00) d. The three strains of Vibrio vulnificus detected were sensitive to 10 commonly used clinical antibiotics, including ciprofloxacin, levofloxacin, and amikacin, etc. A total of 10 patients received surgical treatment, 4 of whom had amputation of limbs/digits; all patients received anti-infection treatment. The length of hospital stay of 11 patients was (26±11) d, of whom 9 patients were cured and 2 patients died. Compared with that of the 6 patients who did not receive early adequate antibiotic treatment, the 5 patients who received early adequate antibiotic treatment had no significant changes in the fatality ratio or amputation of limbs/digits ratio (P>0.05). In 3 months to 2 years after surgery, the hand function of 8 patients was assessed, with results showing 4 cases of disabled hands, 2 cases of incompletely disabled hands, and 2 cases of recovered hands. When a patient had clinical symptoms of limb redness and swelling and a history of contact with seawater/marine products or a pre-examination triage RiCH score of Vibrio vulnificus sepsis ≥1, the etiological testing should be initiated immediately to quickly diagnose Vibrio vulnificus infection. Conclusions: Vibrio vulnificus infection occurs most frequently in summer and autumn, with clinical manifestations and laboratory test results showing obvious infection characteristics, and may be accompanied by damage to multiple organ functions. Both the fatality and disability ratios are high and have a great impact on the function of the affected limbs. Early diagnosis is difficult and treatment is easily delayed, but mNGS could facilitate rapid detection. For patients with red and swollen limbs accompanied by a history of contact with seawater/marine products or with a pre-examination triage RiCH score of Vibrio vulnificus sepsis ≥1, the etiological testing should be initiated immediately to quickly diagnose Vibrio vulnificus infection.
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Affiliation(s)
- W P Lin
- The First Department of General Surgery, the First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510062, China
| | - X Mu
- Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - S H Chen
- Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - C J He
- Department of Burns and Wound Repair, Shenzhen People's Hospital, the First Affiliated Hospital of Southern University of Science and Technology, the Second Clinical Medicine College of Jinan University, Shenzhen 518020, China
| | - H H Li
- Department of Burns and Wound Repair, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - C W Sun
- Department of Burns and Wound Repair, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - H N Bian
- Department of Burns and Wound Repair, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - W Lai
- Department of Burns and Wound Repair, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - Z F Huang
- Department of Burns and Wound Repair, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
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Mei X, Zhang G, Liu T, Hu H, Lai X, Chen W, Wang Y, Peng J, Lai W. Biomineralization-powered integrated immunoprobe and its application in Immunochromatographic assay. Biosens Bioelectron 2024; 248:115945. [PMID: 38150802 DOI: 10.1016/j.bios.2023.115945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/07/2023] [Accepted: 12/19/2023] [Indexed: 12/29/2023]
Abstract
Immunochromatographic assay (ICA) has attracted widespread attention owing to its advantages of economy, simplicity, and rapidity. However, the synthesis of immunoprobes is still limited by complicated design ideas and multistep operations from preparing nanoparticles to conjugating monoclonal antibodies (mAb) onto nanoparticles. Inspired by the biomineralization of zeolitic imidazolate framework-8 (ZIF-8), we proposed a strategy for the rapid synthesis of an integrated immunoprobe (ZIF-8@QDs-mAb), achieving a one-step integration with strong fluorescent signal output capability and specific recognition ability. In addition, different fluorescent colors of ZIF-8@QDs-mAb were generated by doping red and green quantum dots (QDs) in various ratios. With a smart detection platform, the developed ZIF-8@QDs-mAb-based multiplex ICA (ZIF-8@QDs-mAb-mICA) achieved the on-site quantitative detection of enrofloxacin, sulfamethazine, and kanamycin in milk within 15 min, with the limit of detection (LOD) of 0.052, 0.186 and 0.216 ng mL-1, which were 5.69, 2.20 and 4.40 times higher than that of gold nanoparticles-based mICA, respectively. The quantitative detection of alpha-fetoprotein and human chorionic gonadotropin was also achieved with LOD of 0.516 ng mL-1 and 0.225 mIU mL-1, respectively, which verified the universality of the strategy. This work provides a novel idea for the design of an efficient integrated immunoprobe and has broad application prospects in ICA.
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Affiliation(s)
- Xi Mei
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China
| | - Gan Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China
| | - Tingting Liu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China
| | - Hong Hu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Xiaocui Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China
| | - Wenyao Chen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China
| | - Yumeng Wang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China
| | - Juan Peng
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China.
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Xiao X, Yu S, Zhang G, Chen Z, Hu H, Lai X, Liu D, Lai W. Efficient Photothermal Sensor Based on Coral-Like Hollow Gold Nanospheres for the Sensitive Detection of Sulfonamides. Small 2024:e2307764. [PMID: 38372021 DOI: 10.1002/smll.202307764] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 01/07/2024] [Indexed: 02/20/2024]
Abstract
Gold nanoparticles (AuNPs), universally regarded as colorimetric signal reporters, are widely employed in lateral flow immunoassays (LFIAs). However, it is difficult for AuNPs-LFIA to achieve a wide range and sensitive detection. Herein, novel coral-like hollow gold nanospheres (CHGNPs) are synthesized. The growth of gold nanospheres can be regulated to obtain a multibranched and hollow construction. The obtained CHGNPs possess intense broadband absorption across the visible to near-infrared region, exhibiting a high molar extinction coefficient of 14.65 × 1011 M-1 cm-1 and a photothermal conversion efficiency of 79.75%. Thus, the photothermal/colorimetric dual-readout LFIA is developed based on CHGNPs (CHGNPs-PT-LFIA and CHGNPs-CM-LFIA) to effectively improve the detection sensitivity and broaden the detection range in regard to sulfonamides (SAs). The limits of detection of the CHGNPs-PT-LFIA and CHGNPs-CM-LFIA reached 1.9 and 2.8 pg mL-1 for the quantitative detection of sulfaquinoxaline, respectively, which are 6.3-fold and 4.3-fold lower than that of the AuNPs-LFIA. Meanwhile, the CHGNPs-PT-LFIA broadened the detection range to three orders of magnitude, which ranged from 2.5 to 5000 pg mL-1 . The synthesized photothermal CHGNPs have been proven effective in improving the performance of the LFIA and provide a potential option for the construction of sensing platforms.
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Affiliation(s)
- Xiaoyue Xiao
- State Key Laboratory of Food Science and Resources, Nanchang University, 235 East Nanjing Road, Nanchang, 330047, China
| | - Sha Yu
- State Key Laboratory of Food Science and Resources, Nanchang University, 235 East Nanjing Road, Nanchang, 330047, China
| | - Gan Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, 235 East Nanjing Road, Nanchang, 330047, China
| | - Zongyou Chen
- State Key Laboratory of Food Science and Resources, Nanchang University, 235 East Nanjing Road, Nanchang, 330047, China
| | - Hong Hu
- State Key Laboratory of Food Science and Resources, Nanchang University, 235 East Nanjing Road, Nanchang, 330047, China
| | - Xiaocui Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, 235 East Nanjing Road, Nanchang, 330047, China
| | - Daofeng Liu
- Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease, Jiangxi Province Centre for Disease Control and Prevention, 555 East Beijing Road, Nanchang, 330029, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, 235 East Nanjing Road, Nanchang, 330047, China
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Wang Z, Zou R, Yi J, Wang Y, Hu H, Qi C, Lai W, Guo Y, Xianyu Y. "Four-In-One" Multifunctional Dandelion-Like Gold@platinum Nanoparticles-Driven Multimodal Lateral Flow Immunoassay. Small 2024:e2310869. [PMID: 38363059 DOI: 10.1002/smll.202310869] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 02/03/2024] [Indexed: 02/17/2024]
Abstract
The traditional lateral flow immunoassay (LFIA) with a single signal output mode may encounter challenges such as low sensitivity, poor detection range, and susceptibility to external interferences. These limitations hinder its ability to meet the growing demand for advanced LFIA. To address these issues, the rational development of multifunctional labels for multimodal LFIA emerges as a promising strategy. Herein, this study reports a multimodal LFIA using "four-in-one" multifunctional dandelion-like gold@platinum nanoparticles (MDGP). The inherent properties of MDGP, such as the broad absorption spectrum, porous dandelion-like nanostructure, and bimetallic composition with gold and platinum, endow them with capacities in dual spectral-overlapped fluorescence quenching, optical readout, catalytic activity, and photothermal effect. Benefiting from their multifunctional properties, the MDGP-LFIA enables multimodal outputs including fluorescent, colorimetric, and photothermal signals. This multimodal MDGP-LFIA allows for the detection of acetamiprid at a range of 0.01-50 ng mL-1 , with the lowest qualitative and quantitative detection results of 0.5 and 0.008 ng mL-1 , respectively, significantly better than the traditional gold nanoparticles-based LFIA. The diversity, complementarity, and synergistic effect of integrated output signals in this multimodal MDGP-LFIA improve the flexibility, practicability, and accuracy of detection, holding great promise as a point-of-care testing platform in versatile application scenarios.
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Affiliation(s)
- Zexiang Wang
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Rubing Zou
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Jiuhong Yi
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Yidan Wang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Hong Hu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China
| | - Chao Qi
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang Province, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China
| | - Yirong Guo
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Yunlei Xianyu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang Province, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China
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9
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Huang C, Lai W, Mao S, Song D, Zhang J, Xiao X. Quercetin-induced degradation of RhoC suppresses hepatocellular carcinoma invasion and metastasis. Cancer Med 2024; 13:e7082. [PMID: 38457248 PMCID: PMC10923047 DOI: 10.1002/cam4.7082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 01/25/2024] [Accepted: 02/18/2024] [Indexed: 03/10/2024] Open
Abstract
BACKGROUND Tumor metastasis and recurrence are major causes of mortality in patients with hepatocellular carcinoma (HCC) that is still lack of effective therapeutic targets and drugs. Previous reports implied that ras homolog family member C (RhoC) plays a toxic role on metastasis and proliferation of cancer. METHODS In this research, the correlation between RhoC and metastasis ability was confirmed by in vitro experiments and TCGA database. We explored whether quercetin could inhibit cell migration or invasion by transwell assay. Real-time PCR, overexpression and ubiquitination assay, etc. were applied in mechanism study. Primary HCC cells and animal models including patient-derived xenografts (PDXs) were employed to evaluate the anti-metastasis effects of quercetin. RESULTS Clinical relevance and in vitro experiments further confirmed the level of RhoC was positively correlated with invasion and metastasis ability of HCC. Then we uncovered that quercetin could attenuate invasion and metastasis of HCC by downregulating RhoC's level in vitro, in vivo and PDXs. Furthermore, mechanistic investigations displayed quercetin hindered the E3 ligase expression of SMAD specific E3 ubiquitin protein ligase 2 (SMURF2) leading to enhancement of RhoC's ubiquitination and proteasomal degradation. CONCLUSIONS Our research has revealed the novel mechanisms quercetin regulates degradation of RhoC level by targeting SMURF2 and identified quercetin may be a potential compound for HCC therapy.
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Affiliation(s)
- Chunlong Huang
- Department of Hepatobiliary Surgery, The first affiliated hospitalSun Yat‐Sen UniversityGuangzhouGuangdongChina
| | - Weihua Lai
- Department of Pharmacy, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouGuangdongChina
| | - Shuai Mao
- Department of Hepatobiliary Surgery, The first affiliated hospitalSun Yat‐Sen UniversityGuangzhouGuangdongChina
| | - Deli Song
- Department of Pharmacology, Zhongshan School of MedicineSun Yat‐sen UniversityGuangzhouChina
| | - Jihong Zhang
- Department of Hepatobiliary Surgery, The first affiliated hospitalSun Yat‐Sen UniversityGuangzhouGuangdongChina
| | - Xiao Xiao
- Department of Pharmacy, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouGuangdongChina
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10
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Huang Z, Huang H, Hu J, Xia L, Liu X, Qu R, Huang X, Yang Y, Wu K, Ma R, Xu J, Chen Z, Wu Y, Yang J, Fang Y, Zeng J, Lai W, Sui G, Sha W, Xiong Y, Lu S, Fan XY. A novel quantitative urine LAM antigen strip for point-of-care tuberculosis diagnosis in non-HIV adults. J Infect 2024; 88:194-198. [PMID: 38036183 DOI: 10.1016/j.jinf.2023.11.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 11/25/2023] [Indexed: 12/02/2023]
Affiliation(s)
- Zhen Huang
- National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, Shenzhen, Guangdong 518112, China
| | - Huan Huang
- Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Public Health Clinical Center, Fudan University, Shanghai 200032, China; Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200438, China
| | - Jing Hu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Lu Xia
- National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, Shenzhen, Guangdong 518112, China; Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Public Health Clinical Center, Fudan University, Shanghai 200032, China
| | - Xuhui Liu
- National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, Shenzhen, Guangdong 518112, China; Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Public Health Clinical Center, Fudan University, Shanghai 200032, China
| | - Rong Qu
- Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Public Health Clinical Center, Fudan University, Shanghai 200032, China
| | - Xiaolin Huang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Yang Yang
- Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Public Health Clinical Center, Fudan University, Shanghai 200032, China
| | - Kang Wu
- Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Public Health Clinical Center, Fudan University, Shanghai 200032, China
| | - Ruiqing Ma
- Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Public Health Clinical Center, Fudan University, Shanghai 200032, China
| | - Jinchuan Xu
- Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Public Health Clinical Center, Fudan University, Shanghai 200032, China
| | - Zhenyan Chen
- Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Public Health Clinical Center, Fudan University, Shanghai 200032, China
| | - Yuhao Wu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Juan Yang
- Shanghai Pulmonary Hospital, Tongji University, Shanghai 200433, China
| | - Yong Fang
- Shanghai Pulmonary Hospital, Tongji University, Shanghai 200433, China
| | - Jianfeng Zeng
- National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, Shenzhen, Guangdong 518112, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Guodong Sui
- Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200438, China
| | - Wei Sha
- Shanghai Pulmonary Hospital, Tongji University, Shanghai 200433, China
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
| | - Shuihua Lu
- National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, Shenzhen, Guangdong 518112, China; Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Public Health Clinical Center, Fudan University, Shanghai 200032, China.
| | - Xiao-Yong Fan
- National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, Shenzhen, Guangdong 518112, China; Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Public Health Clinical Center, Fudan University, Shanghai 200032, China.
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11
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Fang X, Liu T, Xue C, Xue G, Wu M, Liu P, Hammock BD, Lai W, Peng J, Zhang C. Competitive ratiometric fluorescent lateral flow immunoassay based on dual emission signal for sensitive detection of chlorothalonil. Food Chem 2024; 433:137200. [PMID: 37678117 PMCID: PMC10829940 DOI: 10.1016/j.foodchem.2023.137200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 07/05/2023] [Accepted: 08/16/2023] [Indexed: 09/09/2023]
Abstract
In this study, we develop a competitive ratiometric fluorescent lateral flow immunoassay (CRF-LFIA) based on dual emission fluorescence signal, which has great advantage in visual and quantitative detection of Chlorothalonil (CTN). Red-emitted fluorescent magnetic nanobeads (FMNBs) and green-emitted aggregation-induced emission fluorescent microsphere (AIEFM) are synthesized and conjugated to antibodies and antigens respectively, resulting in competitive binding with the analyte. The ratiometric fluorescence signal which comes from the overlap of these two fluorescence emissions. FMNBs probes also provide immunomagnetic separation (IMS) to enrich the analysts and resist complex matrix effects. This strip generates a visually discernible yellow-to-green fluorescence color change in the presence of CTN (2 ng/mL), which could be incisively observed by naked eye. Moreover, the limit of detection (LOD) reached 0.152 ng/mL by measurement of color (Red-Green-Blue, RGB) signals. Method validation shows a good correlation between CRF-LFIA and LC-MS/MS.
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Affiliation(s)
- Xuechen Fang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China; Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture and Rural Affairs, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China
| | - Tingting Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Chang Xue
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China
| | - Guangjian Xue
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Mengyun Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Pengyan Liu
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture and Rural Affairs, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China
| | - Bruce D Hammock
- Department of Entomology, Nematology and UCD Comprehensive Cancer Center, University of California Davis, CA 95616, United States
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Juan Peng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China.
| | - Cunzheng Zhang
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture and Rural Affairs, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China; School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China.
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12
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Jing X, Yu S, Zhang G, Tang Y, Yin J, Peng J, Lai W. Sensitive fluorescence ELISA for the detection of zearalenone based on self-assembly DNA nanocomposites and copper nanoclusters. Anal Bioanal Chem 2024; 416:983-992. [PMID: 38127274 DOI: 10.1007/s00216-023-05088-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/26/2023] [Accepted: 11/30/2023] [Indexed: 12/23/2023]
Abstract
Zearalenone (ZEN), produced by Fusarium species, is a potential risk to human health. Traditional enzyme-linked immunosorbent assay (ELISA) is restricted due to low sensitivity for the detection of ZEN. Herein, enzyme nanocomposites (ALP-SA-Bio-ssDNA, ASBD) were prepared with the self-assembly strategy based on streptavidin-labeled alkaline phosphatase (SA-ALP) and dual-biotinylated ssDNA (B2-ssDNA). The enzyme nanocomposites improved the loading amount of ALP and catalyzed more ascorbic acid 2-phosphate to generate ascorbic acid (AA). Subsequently, Cu2+ could be reduced to copper nanoclusters (CuNCs) having strong fluorescence signal by AA with poly T. Benefiting from the high enzyme load of nanocomposites and the strong signal of CuNCs, the fluorescence ELISA was successfully established for the detection of ZEN. The proposed method exhibited lower limit of detection (0.26 ng mL-1) than traditional ELISA (1.55 ng mL-1). The recovery rates ranged from 92.00% to 108.38% (coefficient of variation < 9.50%) for the detection of zearalenone in corn and wheat samples. In addition, the proposed method exhibited no cross reaction with four other mycotoxins. This proposed method could be used in trace detection for food safety.
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Affiliation(s)
- Xudong Jing
- State Key Laboratory of Food Science and Resources, Nanchang University, 235, East Nanjing Road, Nanchang, 330047, China
| | - Sha Yu
- State Key Laboratory of Food Science and Resources, Nanchang University, 235, East Nanjing Road, Nanchang, 330047, China
| | - Ganggang Zhang
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China.
| | - Yanyan Tang
- State Key Laboratory of Food Science and Resources, Nanchang University, 235, East Nanjing Road, Nanchang, 330047, China
| | - Jiaqi Yin
- State Key Laboratory of Food Science and Resources, Nanchang University, 235, East Nanjing Road, Nanchang, 330047, China
| | - Juan Peng
- State Key Laboratory of Food Science and Resources, Nanchang University, 235, East Nanjing Road, Nanchang, 330047, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, 235, East Nanjing Road, Nanchang, 330047, China.
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13
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Zhang G, Liu T, Cai H, Hu Y, Zhang Z, Huang M, Peng J, Lai W. Molecular Engineering and Confinement Effect Powered Ultrabright Nanoparticles for Improving Sensitivity of Lateral Flow Immunoassay. ACS Nano 2024; 18:2346-2354. [PMID: 38181225 DOI: 10.1021/acsnano.3c10427] [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] [Subscribe] [Scholar Register] [Indexed: 01/07/2024]
Abstract
The application of traditional lateral flow immunoassay (LFIA)-based gold nanoparticles (AuNPs) to measure traces of target chemicals is usually challenging. In this study, we developed an integrated strategy based on molecular engineering and the spatial confinement of nanoparticles (NPs) to obtain ultrahigh quantum yields (QYs) of aggregation-induced emission (AIE) fluorescence NPs and employed them for the highly sensitive detection of T-2 toxin on the LFIA platform. Tetraethyl-4,4',4″,4‴-(ethene-1,1,2,2-tetrayl)tetrabenzoate (TCPEME), an AIE luminogen, was designed using molecular engineering to lower the energy gap, achieving higher QYs (26.26%) than previous AIEgens (13.02%). Subsequently, TCPEME-doped fluorescence NPs (TFNPs) achieved ultrahigh QYs, up to 84.55%, which were generated from the strong restriction of the NP state, efficiently suppressing nonradiative relaxation channels verified by ultrafast electron dynamics. On the LFIA platform, the sensitivity of the designed TFNP-based LFIA (TFNP-LFIA) was 10.4-fold and 4.3-fold more sensitive than that of the AuNP-LFIA and TPENP-LFIA for detecting the T-2 toxin, respectively. In addition, TFNP-LFIA was used for detecting T-2 toxin in samples and showed satisfactory recoveries (79.5 to 122.0%) with CV (1.49 to 11.75%), which implied excellent application potential for TFNP-LFIA. Overall, dual improvement of the molecule in fluorescence performance originating from the molecular engineering and spatial confinement of NPs could be an efficient tool for promoting the development of high-performance reporters in LFIA.
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Affiliation(s)
- Gan Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Tingting Liu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Huadong Cai
- Animal Husbandry Development and Disease Control Center of Ganzhou, Ganzhou 341000, China
| | - Yan Hu
- Ganzhou Animal Husbandry and Fisheries Research Institute, Gannan Academy of Sciences, Ganzhou 341000, China
| | - Zhifang Zhang
- Jiangxi Agricultural Product Quality Safety and Inspection Center, Nanchang 330077, China
| | - Meifeng Huang
- Animal Husbandry Development and Disease Control Center of Ganzhou, Ganzhou 341000, China
| | - Juan Peng
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
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14
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Hu L, Chen Z, Li T, Ye X, Luo Q, Lai W. Comparison of oriented and non-oriented antibody conjugation with AIE fluorescence microsphere for the immunochromatographic detection of enrofloxacin. Food Chem 2023; 429:136816. [PMID: 37459713 DOI: 10.1016/j.foodchem.2023.136816] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/21/2023] [Accepted: 07/03/2023] [Indexed: 08/24/2023]
Abstract
Antibodies and labels were typically non-oriented conjugated in conventional immunochromatographic assays (ICAs). In this work, a C-terminal cysteine-tagged recombinant protein A (rPA) was conjugated in an oriented manner onto aggregation-induced emission fluorescence microsphere (AIEFM). The Fc fragment of anti-enrofloxacin monoclonal antibody (anti-ENR mAb) was then conjugated onto the rPA. The resulting oriented mAb-AIEFM probe was used in an ENR-ICA for the rapid detection of ENR, a widely abused animal drug. The ENR-ICA with the oriented probe saved 66.7% of anti-ENR mAb and 25% of ENR-bovine serum albumin, and had a limit of detection of 0.035 ng/mL, compared with 0.079 ng/mL for the non-oriented probe. The corresponding linear ranges of the ENR-ICA based on the oriented and non-oriented probes were 0.25-10 ng/mL and 0.1-2.5 ng/mL, respectively. This novel ICA based on the oriented probe has the potential to be used for sensitive and rapid detection in food safety.
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Affiliation(s)
- Liwen Hu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, PR China
| | - Zhenzhen Chen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, PR China
| | - Ting Li
- Ganjiang Traditional Chinese Medicine Innovation Center, Nanchang 330115, PR China
| | - Xianlong Ye
- Ganjiang Traditional Chinese Medicine Innovation Center, Nanchang 330115, PR China
| | - Qi Luo
- Jiangxi Ceneral Institute of Testing and Certification, Nanchang 330052, PR China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, PR China.
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15
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Zhang G, Huang Z, Hu L, Wang Y, Deng S, Liu D, Peng J, Lai W. Molecular Engineering Powered Dual-Readout Point-of-Care Testing for Sensitive Detection of Escherichia coli O157:H7. ACS Nano 2023; 17:23723-23731. [PMID: 38009547 DOI: 10.1021/acsnano.3c07509] [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] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Escherichia coli O157:H7 (E. coli O157:H7) has become one of the major threats to public health and food safety. However, the culture method as a gold standard for the detection of E. coli O157:H7 requires laborious operations and a long processing time. Herein, we developed a dual-readout aggregation-induced emission nanoparticle-based lateral flow immunoassay (LFIA) for sensitive detection of E. coli O157:H7 to achieve a qualitative and quantitative assay for satisfying the applications under varying scenarios. 2,3-Bis(4-(bis(4-(tert-butyl)phenyl)amino)phenyl)fumaronitrile (BAPF), an aggregation-induced emission luminogen, was designed to achieve a strong molar extinction coefficient (3.0 × 104 M-1 cm-1) and high quantum yield (33.28%), which was further verified by a large rotation angle and low energy gap. Subsequently, BAPFs were integrated into a nanostructured system to form excellent water-soluble nanoparticles (BAPFNPs) for the detection of E. coli O157:H7 with colorimetric and fluorescent readout. The designed BAPFNPs-based LFIA (BAPFNPs-LFIA) exhibited nearly qualitative ability with gold nanoparticles-LFIA (AuNPs-LFIA) and a 9 times enhancement compared with quantum beads-LFIA (QBs-LFIA) in quantitative aspect. Especially, FL-BAPFNPs-LFIA could detect E. coli O157:H7 earlier than QBs-LFIA and AuNPs-LFIA when samples with low E. coli O157:H7 concentrations were cultured. Overall, the proposed strategy revealed that versatile BAPFNPs have great potential as reporters for dual-readout ability and enhancing detection sensitivity for rapid and accurate pathogenic bacteria assay.
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Affiliation(s)
- Gan Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, 330047 Nanchang, China
| | - Zhen Huang
- National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, Shenzhen, Guangdong Province 518112, China
| | - Liwen Hu
- State Key Laboratory of Food Science and Resources, Nanchang University, 330047 Nanchang, China
| | - Yumeng Wang
- State Key Laboratory of Food Science and Resources, Nanchang University, 330047 Nanchang, China
| | - Shengliang Deng
- Institute of Microbiology, Jiangxi Academy of Sciences, 330096 Nanchang, China
| | - Daofeng Liu
- Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease, Jiangxi Province Center for Disease Control and Prevention, 555 East Beijing Road, Nanchang 330029, China
| | - Juan Peng
- State Key Laboratory of Food Science and Resources, Nanchang University, 330047 Nanchang, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, 330047 Nanchang, China
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16
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Wang Y, Zhang G, Xiao X, Shu X, Fei D, Guang Y, Zhou Y, Lai W. High-Performance Fluorescent Microspheres Based on Fluorescence Resonance Energy Transfer Mode for Lateral Flow Immunoassays. Anal Chem 2023; 95:17860-17867. [PMID: 38050676 DOI: 10.1021/acs.analchem.3c03986] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
The label with a large Stokes shift and strong fluorescence properties could improve the sensitivity of the lateral flow immunoassay (LFIA). Herein, two aggregation-induced emission (AIE) luminogens with spectral overlap were encapsulated in polymers by using the microemulsion method as a label, and the construction of a fluorescence resonance energy transfer mode was further verified via theoretical calculation and spectral analysis. Satisfactorily, the doped AIE polymer microspheres (DAIEPMs) exhibited a large Stokes shift of 285 nm and a 10.8-fold fluorescence enhancement compared to those of the AIEPMs loaded with acceptors. Benefiting from the excellent optical performance, DAIEPMs were applied to the LFIA for sensitive detection of chlorothalonil, which is an organochlorine pesticide. The limit of detection of the proposed DAIEPMs-LFIA was 1.2 pg/mL, which was 4.8-fold and 11.6-fold lower than those of quantum dot bead LFIA and gold nanoparticle LFIA, respectively. This work provides a new strategy to improve the optical properties of fluorescent materials and construct a sensitive and reliable detection platform.
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Affiliation(s)
- Yumeng Wang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Gan Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Xiaoyue Xiao
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Xinhui Shu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Dan Fei
- Ministry of Agriculture and Rural Affairs of the People's Republic of China, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
| | - Yelan Guang
- Ministry of Agriculture and Rural Affairs of the People's Republic of China, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
| | - Yaomin Zhou
- Ministry of Agriculture and Rural Affairs of the People's Republic of China, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
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17
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Chen HX, Huang YW, Liu WJ, Liu B, Chen GB, Zhang DD, Chen PY, Lai W. [Visual analysis of the current research status and hotspots of electric burns at home and abroad]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:977-984. [PMID: 37899564 DOI: 10.3760/cma.j.cn501225-20230511-00167] [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: 10/31/2023]
Abstract
Objective: To analyze the literature on electric burns published at home and abroad, and to explore the research hotspots and frontiers of electric burns. Methods: The bibliometric method was used. The Chinese and English literature related to electric burns published in China National Knowledge Infrastructure, Wanfang database, VIP database and the core collection of Web of Science database from January 1, 2013 to December 31, 2022 were searched respectively, and the CiteSpace 6.2.R2 software was used for analysis. The number of papers, authors, countries, and institutions of Chinese and English literature were counted respectively, and the co-occurrence analysis of keywords and mutation analysis and cluster analysis on the basis of the co-occurrence analysis were conducted, besides, the clustering time line figure was obtained after the keywords were sorted by time to explore the current research status and the evolution process of hotspots in the field of electric burns. Results: A total of 398 English papers were retrieved from the core collection of Web of Science database, and a total of 523 Chinese papers were retrieved from China National Knowledge Infrastructure, Wanfang database, and VIP database after duplicate check. From 2013 to 2022, the number of English literature published in the field of electric burns showed a steadily upward trend, and the number of published Chinese literature showed a downward trend and tended to be stable. In Chinese literature, a total of 302 authors as the first author published papers related to electric burns, with 17 core authors published ≥3 papers; in English literature, a total of 320 authors as the first author published papers related to electric burns. Researches on electric burns were carried out in 65 countries, with United States having the most cooperation with other countries and the largest number of papers published. A total of 512 institutions at home and abroad published papers related to electric burns, and the institutions with the largest number of Chinese and English papers were Shanghai Electric Power Hospital in China (n=14) and Hallym University in Korea (n=11), respectively. A total of 1 176 Chinese keywords and 1 068 English keywords were included for co-occurrence analysis after excluding keywords related to the searching words. The top three keywords in frequency in Chinese literature were surgical flap, wound repair, and nursing, and the top three keywords in frequency in English literature were management, epidemiology, and children. Ten clusters were obtained by keyword analysis in Chinese literature, and the largest cluster was wound healing, followed by clinical effects and surgical flaps. Seven clusters were obtained by keyword analysis in English literature, and the largest cluster was reconstructive surgical procedures, followed by chronic pain and shock. The persistent clusters in Chinese literature were wound healing and clinical outcomes, etc., and the prominent nodes in the recent two years were surgical timing, limb electric burns, and hypertrophic scars; the persistent clusters in English literature were reconstructive surgical procedures and chronic pain, etc., and the prominent nodes in the recent two years were predictors and burn management, etc. In Chinese literature, the keyword with the longest duration of mutation (2017-2021) was wrist electric burns, and the keyword with the highest intensity of mutation was flap repair; in English literature, the keyword with the longest duration of the mutation (2019-2022) was voltage, and the keyword with the highest intensity of mutation was prevention. Conclusions: There are similarities and differences in the research directions and hotspots of electric burns at home and abroad. Surgical flap repair is a common research hotspot at home and abroad. At present, domestic research focuses on wound healing, wrist electric burns, and other aspects, while international research focuses on treatment management, epidemiology, reconstruction, and other aspects.
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Affiliation(s)
- H X Chen
- Department of Nursing, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - Y W Huang
- School of Nursing, Guangdong Pharmaceutical University, Guangzhou 510310, China
| | - W J Liu
- School of Nursing, Guangdong Pharmaceutical University, Guangzhou 510310, China
| | - B Liu
- School of Nursing, Guangdong Pharmaceutical University, Guangzhou 510310, China
| | - G B Chen
- Department of Burn and Wound Repair Surgery, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - D D Zhang
- Department of Burn and Wound Repair Surgery, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - P Y Chen
- Department of Burn and Wound Repair Surgery, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - W Lai
- Department of Burn and Wound Repair Surgery, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
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18
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Lai X, Zhang G, Deng S, Zhang G, Xiao X, He W, Su L, Liu C, Lai W. Triple strategy-enhanced immunochromatographic assay based on APCB and AIEFM for the ultrasensitive detection of AFM1. J Hazard Mater 2023; 460:132438. [PMID: 37666170 DOI: 10.1016/j.jhazmat.2023.132438] [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] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/08/2023] [Accepted: 08/28/2023] [Indexed: 09/06/2023]
Abstract
Aflatoxin M1 (AFM1) is highly toxic, widely distributed, and difficult to monitor, posing a serious threat to human health. Therefore, a highly sensitive, rapid, convenient, and low-cost detection method must be urgently established. In this study, a triple strategy-enhanced immunochromatographic assay (ICA) was developed to satisfy these detection requirements. First, a turn-on signal output mode of the fluorescence quenching ICA substituted the turn-off mode of the traditional ICA for sensitive response to trace AFM1, with the limit of detection (LOD) reduced by approximately 4.9-fold. Then, a novel Au and polydopamine (PDA) cogrowth chrysanthemum-like blackbody was prepared as the quenching probe to reduce the background signal. This probe combined the excellent properties of Au nanoparticles with PDA. Thus, its fluorescence quenching constant was higher than that of single Au and PDA nanoparticles by 25.8- and 4.9-fold, respectively. Furthermore, an aggregation-induced emission fluorescence microsphere with a 5.7-fold higher relative quantum yield than a commercial fluorescence microsphere was selected as the signal output carrier to improve the signal-to-noise ratio. The integration of the above triple strategies established a 53.4-fold sensitivity-enhanced fluorescence quenching ICA (LOD = 0.9 pg/mL) for detecting AFM1 in milk, providing a strong technical guarantee for the safety monitoring of milk products.
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Affiliation(s)
- Xiaocui Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Ganggang Zhang
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, China
| | - Shengliang Deng
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, China.
| | - Gan Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Xiaoyue Xiao
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Weihua He
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, China
| | - Liu Su
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, China
| | - Cong Liu
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
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19
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Jing X, Shan S, Xing K, Cao W, Xiao X, Liu D, Lai W. Sensitive fluorescence ELISA with streptavidin scaffolded DNA tetrads for the detection of Escherichia coli O157:H7. J Dairy Sci 2023; 106:5930-5939. [PMID: 37474367 DOI: 10.3168/jds.2022-23015] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 02/28/2023] [Indexed: 07/22/2023]
Abstract
Escherichia coli O157:H7 poses a threat to humans. Traditional ELISA is not a sensitive method for the detection of E. coli O157:H7. Here, an efficient method was designed for improving the load capacity of alkaline phosphatase (ALP) with streptavidin scaffolded DNA tetrad (SS-DNAt). With more ALP, more ascorbic acid 2-phosphate was catalyzed to ascorbic acid that was used to synthesize fluorescence poly adenine-thymine-templated copper nanoclusters. Based on SS-DNAt, fluorescence ELISA was successfully proposed for improving the sensitivity for detection of E. coli O157:H7 in milk samples. The method showed a linear range of 104 to 106 cfu/mL. The limit of detection of fluorescence ELISA was 3.75 × 103 cfu/mL and 6.16-fold better than that of traditional ELISA. The recovery of the fluorescence ELISA was 86.7 to 93.6% with the coefficient of variation of 5.6 to 10.5% in milk. This method could be used to detect hazardous material in food.
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Affiliation(s)
- Xudong Jing
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Shan Shan
- College of Life Science, National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang 330022, China; Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease, Jiangxi Province Center for Disease Control and Prevention, Nanchang 330029, China
| | - Keyu Xing
- School of Food Science and Bioengineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Wenkai Cao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xiaoyue Xiao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Daofeng Liu
- Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease, Jiangxi Province Center for Disease Control and Prevention, Nanchang 330029, China.
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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20
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Chen HX, Liu WJ, Liu B, Huang ZF, Zhang QP, Xiao XL, Lai W, Zheng SY. [Influence of work engagement and self-efficacy of nurses on clinical practice ability in burn intensive care unit]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:779-786. [PMID: 37805790 DOI: 10.3760/cma.j.cn501225-20220905-00379] [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: 10/09/2023]
Abstract
Objective: To analyze the influence of work engagement and self-efficacy of nurses on clinical practice ability in burn intensive care unit (BICU), and to explore its potential pathways of action. Methods: A cross-sectional survey was conducted. From May to October 2020, a total of 30 hospitals with BICU in China were selected by stratified sampling method. Among BICU nurses who met the inclusion criteria, their clinical practice ability, work engagement, and self-efficacy were evaluated by self-evaluation scale of oriented problem-solving behavior in nursing practice (OPSN), Utrecht work engagement scale (UWES), and general self-efficacy scale (GSES), respectively. The total scale scores of each index and the average item scores were recorded. The self-designed general data questionnaire was used to investigate the nurses' gender, age, marital status, education background, working years, professional title, and the economic region of the hospital that they belonged to. The total scale scores of the above-mentioned three evaluation indexes were compared after the classification of nurses according to general data, and the data were statistically analyzed with independent sample t test or one-way analysis of variance. Pearson correlation analysis was used to analyze the correlation between the total scale scores of the three evaluation indexes. Based on the total scale scores of the above-mentioned three evaluation indexes, a structural equation model was established, the mediation analysis of the relationship among the three evaluation indexes and the pathway analysis of the structural model were conducted, and the Bootstrap method was used to verify the pathways of action. Results: A total of 401 questionnaires were distributed, and 337 valid questionnaires were returned, with a valid return rate of 84.04%. The total scale scores of clinical practice ability, work engagement, and self-efficacy of 337 nurses were 98.2±11.7, 67.7±18.6, and 26.6±5.6, respectively, and the average item scores were 3.9±0.5, 4.5±1.2, and 2.7±0.6, respectively. Among the 337 nurses, the majority were female, aged 40 or below, married, and had a bachelor's degree with work experience of ≤10 years; both nurses with professional nurse title and nurses from the Southeast region accounted for about 50%. There were statistically significant differences in the total scale score of clinical practice ability among nurses with different ages, education backgrounds, working years, and professional titles (with F values of 3.26, 4.36, 3.12, and 2.80, respectively, P<0.05). There was statistically significant difference in the total scale score of work engagement among nurses with different working years (F=4.50, P<0.05). There were statistically significant differences in the total scale score of self-efficacy among nurses with different ages, working years, and professional titles (with F values of 4.91, 4.50, and 2.91, respectively, P<0.05). The total scale score of nurses' work engagement was significantly positively correlated with the total scale score of clinical practice ability and the total scale score of self-efficacy (with r values of 0.30 and 0.51, respectively, P<0.05). The total scale score of nurses' self-efficacy was significantly positively correlated with the total scale score of clinical practice ability (r=0.37, P<0.05). The model had good adaptability, and the intermediary model was established. Nurses' work engagement had a significantly positive effect on both self-efficacy and clinical practice ability (with β values of 0.54 and 0.16, respectively, P<0.05), and nurses' self-efficacy had a significantly positive effect on clinical practice ability (β=0.29, P<0.05). Work engagement had a direct effect on self-efficacy and clinical practice ability, and self-efficacy had a direct effect on clinical practice ability and played a mediating role between work engagement and clinical practice ability. Bootstrap validation showed that self-efficacy played a significantly mediating role in the influence of work engagement on clinical practice ability (with effect size of 0.16, with 95% confidence interval of 0.08-0.24, P<0.05), accounting for half of the total effect of work engagement on clinical practice ability (with effect size of 0.32). Conclusions: BICU nurses have an above-average level of clinical practice ability, a medium level of self-efficacy, and a high level of work engagement. Work engagement and self-efficacy are positively correlated with clinical practice ability. Work engagement can directly affect clinical practice ability or indirectly affect clinical practice ability through the mediating role of self-efficacy.
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Affiliation(s)
- H X Chen
- Department of Nursing, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - W J Liu
- Department of Nursing, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - B Liu
- Department of Nursing, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - Z F Huang
- Department of Burn and Wound Repair Surgery, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - Q P Zhang
- Department of Burn and Wound Repair Surgery, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - X L Xiao
- Department of Burn and Wound Repair Surgery, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - W Lai
- Department of Burn and Wound Repair Surgery, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - S Y Zheng
- Department of Burn and Wound Repair Surgery, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
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21
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Cao W, Shan S, Xing K, Jing X, Peng J, Xiao X, Liu D, Xia J, Lai W. Novel rapid detection of melamine based on the synergistic aggregation of gold nanoparticles. Food Chem 2023; 428:136789. [PMID: 37423110 DOI: 10.1016/j.foodchem.2023.136789] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 06/26/2023] [Accepted: 07/01/2023] [Indexed: 07/11/2023]
Abstract
A simple and rapid colorimetric method for the detection of melamine in milk samples is described. Polythymidine oligonucleotide was adsorbed on to the surface of gold nanoparticles (AuNPs), protecting it from aggregation. In the presence of melamine, polythymidine oligonucleotide combined with melamine formed a double-strand DNA-like structure, allowing AuNPs aggregation. In the presence of positively charged SYBR Green I (SG I), AuNPs were further aggregated. In the presence of melamine and SG I, aggregation of AuNPs was synergistic. Thus, in this principle, melamine can be detected visually. Plasmon resonance peak changes enabled detection of melamine quantitatively using UV-vis spectroscopy. The limit of detection for this colorimetric method was 16 μg L-1 with a good linear range from 19.5 μg L-1 to 1.25 × 103 μg L-1, and detection took only 1 min. The method was successfully applied for detection of melamine in milk samples.
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Affiliation(s)
- Wenkai Cao
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China
| | - Shan Shan
- College of Life Science, National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang 330022, China
| | - Keyu Xing
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, China
| | - Xudong Jing
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China
| | - Juan Peng
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China
| | - Xiaoyue Xiao
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China
| | - Daofeng Liu
- Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease, Jiangxi Province Center for Disease Control and Prevention, 555 East Beijing Road, Nanchang 330029, China.
| | - Jun Xia
- Jiangxi Agricultural Technology Extension Center, Animal Epidemic Control Building, 698 Gaoxin Seventh Road, China.
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China.
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22
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Jie Z, Zhu Q, Zou Y, Wu Q, Qin M, He D, Lin X, Tong X, Zhang J, Jie Z, Luo W, Xiao X, Chen S, Wu Y, Guo G, Zheng S, Li Y, Lai W, Yang H, Wang J, Xiao L, Chen J, Zhang T, Kristiansen K, Jia H, Zhong S. A consortium of three-bacteria isolated from human feces inhibits formation of atherosclerotic deposits and lowers lipid levels in a mouse model. iScience 2023; 26:106960. [PMID: 37378328 PMCID: PMC10291474 DOI: 10.1016/j.isci.2023.106960] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/21/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
By a survey of metagenome-wide association studies (MWAS), we found a robust depletion of Bacteroides cellulosilyticus, Faecalibacterium prausnitzii, and Roseburia intestinalis in individuals with atherosclerotic cardiovascular disease (ACVD). From an established collection of bacteria isolated from healthy Chinese individuals, we selected B. cellulosilyticus, R. intestinalis, and Faecalibacterium longum, a bacterium related to F. prausnitzii, and tested the effects of these bacteria in an Apoe/- atherosclerosis mouse model. We show that administration of these three bacterial species to Apoe-/- mice robustly improves cardiac function, reduces plasma lipid levels, and attenuates the formation of atherosclerotic plaques. Comprehensive analysis of gut microbiota, plasma metabolome, and liver transcriptome revealed that the beneficial effects are associated with a modulation of the gut microbiota linked to a 7α-dehydroxylation-lithocholic acid (LCA)-farnesoid X receptor (FXR) pathway. Our study provides insights into transcriptional and metabolic impact whereby specific bacteria may hold promises for prevention/treatment of ACVD.
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Affiliation(s)
- Zhuye Jie
- BGI-Shenzhen, Shenzhen, China
- Shenzhen Key Laboratory of Human Commensal Microorganisms and Health Research, BGI-Shenzhen, Shenzhen, China
- Laboratory of Genomics and Molecular Biomedicine, Department of Biology, University of Copenhagen, Universitetsparken 13, 2100 Copenhagen, Denmark
| | - Qian Zhu
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- School of Medicine, South China University of Technology, Guangzhou 510006, P.R. China
| | - Yuanqiang Zou
- BGI-Shenzhen, Shenzhen, China
- Laboratory of Genomics and Molecular Biomedicine, Department of Biology, University of Copenhagen, Universitetsparken 13, 2100 Copenhagen, Denmark
- Qingdao-Europe Advanced Institute for Life Sciences, BGI-Shenzhen, Qingdao 266555, China
- Shenzhen Engineering Laboratory of Detection and Intervention of Human Intestinal Microbiome, BGI-Shenzhen, Shenzhen, China
| | - Qili Wu
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- School of Medicine, South China University of Technology, Guangzhou 510006, P.R. China
| | - Min Qin
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- School of Medicine, South China University of Technology, Guangzhou 510006, P.R. China
| | | | | | | | | | - Zhu Jie
- BGI-Shenzhen, Shenzhen, China
| | - Wenwei Luo
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
| | - Xiao Xiao
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
| | - Shiyu Chen
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
| | - Yonglin Wu
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
| | - Gongjie Guo
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- School of Medicine, South China University of Technology, Guangzhou 510006, P.R. China
| | - Shufen Zheng
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
| | - Yong Li
- Department of Surgery, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
| | - Weihua Lai
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
| | - Huanming Yang
- BGI-Shenzhen, Shenzhen, China
- James D. Watson Institute of Genome Sciences, Hangzhou, China
| | - Jian Wang
- BGI-Shenzhen, Shenzhen, China
- James D. Watson Institute of Genome Sciences, Hangzhou, China
| | - Liang Xiao
- BGI-Shenzhen, Shenzhen, China
- Qingdao-Europe Advanced Institute for Life Sciences, BGI-Shenzhen, Qingdao 266555, China
- Shenzhen Engineering Laboratory of Detection and Intervention of Human Intestinal Microbiome, BGI-Shenzhen, Shenzhen, China
| | - Jiyan Chen
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
| | - Tao Zhang
- BGI-Shenzhen, Shenzhen, China
- Shenzhen Key Laboratory of Human Commensal Microorganisms and Health Research, BGI-Shenzhen, Shenzhen, China
- Laboratory of Genomics and Molecular Biomedicine, Department of Biology, University of Copenhagen, Universitetsparken 13, 2100 Copenhagen, Denmark
| | - Karsten Kristiansen
- BGI-Shenzhen, Shenzhen, China
- Laboratory of Genomics and Molecular Biomedicine, Department of Biology, University of Copenhagen, Universitetsparken 13, 2100 Copenhagen, Denmark
- Qingdao-Europe Advanced Institute for Life Sciences, BGI-Shenzhen, Qingdao 266555, China
| | - Huijue Jia
- BGI-Shenzhen, Shenzhen, China
- Shenzhen Key Laboratory of Human Commensal Microorganisms and Health Research, BGI-Shenzhen, Shenzhen, China
| | - Shilong Zhong
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong 510080, P.R. China
- School of Medicine, South China University of Technology, Guangzhou 510006, P.R. China
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23
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Liu T, Lai X, Guo P, Zhang W, Zhang G, Wu M, Xue G, Fang X, Peng J, Lai W. Sensitive lateral flow immunoassay strips based on Fe 3+-chelated polydopamine nanospheres for the detection of kanamycin. Food Chem 2023; 411:135511. [PMID: 36701914 DOI: 10.1016/j.foodchem.2023.135511] [Citation(s) in RCA: 5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 01/02/2023] [Accepted: 01/16/2023] [Indexed: 01/20/2023]
Abstract
As kanamycin (KAN) residue in animal products is harmful to consumers, a rapid and sensitive method for KAN detection needs to be established. KAN monoclonal antibody (KAN-mAb, 1D11) with the half maximal inhibitory concentration of 1.16 ng/mL was prepared in this study. A one-pot method was used to synthesize Fe3+-chelated polydopamine nanospheres (Fe@PDANs) with excellent characteristics of strong light absorption. The novel label of Fe@PDANs and KAN-mAb was used to develop a lateral flow immunoassay (LFIA) for the sensitive detection of KAN. The limit of detection of the Fe@PDANs-based LFIA (Fe@PDANs-LFIA) for KAN was 0.0191 ng/mL, which was 2.75 times lower than PDANs-based LFIA. Furthermore, the Fe@PDANs-LFIA was successfully applied to detect KAN in pork, milk, and honey samples, with recoveries ranging from 93.75% to 113.80% (coefficient of variation < 10%). Therefore, Fe@PDANs have potential for the detection of analytes in LFIA.
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Affiliation(s)
- Tingting Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xiaocui Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Ping Guo
- Jiangxi General Institute of Testing and Certification, Nanchang 330029, China
| | - Wei Zhang
- Jiangxi General Institute of Testing and Certification, Nanchang 330029, China
| | - Gan Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Mengyun Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Guangjian Xue
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xuechen Fang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Juan Peng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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24
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Zhang G, Lai X, He W, Su L, Zhang G, Lai W, Deng S. High-flux smartphone-integrated lateral flow assay based on chrysanthemum-like Au@polydopamine for sensitive detection of enrofloxacin in milk. Lab Chip 2023. [PMID: 37266915 DOI: 10.1039/d3lc00214d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Lateral flow assays (LFAs) are widely used in screening analysis. However, the detection flux and sensitivity of LFAs are unsatisfactory because of the 'one-to-one' read mode and the ordinary performance conventional probe. In this work, a high-flux smartphone-integrated LFA (sLFA) based on chrysanthemum-like Au@polydopamine (AuNC@PDA) for the detection of enrofloxacin (ENR) in milk was established. The smartphone-integrated device was developed and applied in the LFA, giving rise to a reading maximum of 64 samples with only two photos in less than 2 min compared to a 'one-to-one' read mode of a conventional LFA in more than 14 min with a 36.4% deviation. For ENR detection, the limits of detection of sLFA based on AuNC@PDA (33.78 pg mL-1) had 5.0-fold and 6.4-fold reduction compared with those based on AuNP (169.99 pg mL-1, conventional probe) and vvAuNP (216.47 pg mL-1, commercial probe), respectively. This study provides an effective technical means for screening ENR in large quantities of milk samples.
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Affiliation(s)
- Ganggang Zhang
- Institute of Microbiology, Jiangxi Academy of Sciences, 7777 Changdong Avenue, Nanchang 330096, China.
| | - Xiaocui Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Weihua He
- Institute of Microbiology, Jiangxi Academy of Sciences, 7777 Changdong Avenue, Nanchang 330096, China.
| | - Liu Su
- Institute of Microbiology, Jiangxi Academy of Sciences, 7777 Changdong Avenue, Nanchang 330096, China.
| | - Gan Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Shengliang Deng
- Institute of Microbiology, Jiangxi Academy of Sciences, 7777 Changdong Avenue, Nanchang 330096, China.
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25
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Xue G, Wu M, Liu T, Fang X, Yin J, Lai W, Peng J. A multiple lateral flow immunoassay based on AuNP for the detection of 5 chemical contaminants in milk. J Dairy Sci 2023; 106:3856-3867. [PMID: 37164860 DOI: 10.3168/jds.2022-23008] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/04/2023] [Indexed: 05/12/2023]
Abstract
Melamine (MEL), enrofloxacin (ENR), sulfamethazine (SMZ), tetracycline (TC), and aflatoxin M1 (AFM1) are the main chemical contaminants in milk. It is necessary to detect these miscellaneous chemical contaminants in milk synchronously to ensure the safety of the milk. In this study, a multiple lateral flow immunoassay (LFIA) was developed for the detection of MEL, ENR, SMZ, TC, and AFM1 in milk. Under optimal experimental conditions, the cutoff values were 25 ng/mL for MEL, 1 ng/mL for ENR, 2.5 ng/mL for SMZ, 2.5 ng/mL for TC, and 0.25 ng/mL for AFM1 in milk samples. The limits of detection of LFIA were 0.173 ng/mL for MEL, 0.078 ng/mL for ENR, 0.059 ng/mL for SMZ, 0.082 ng/mL for TC, and 0.0064 ng/mL for AFM1. The recovery rates of LFIA in milk were 83.2-104.4% for MEL, 76.5-127.3% for ENR, 96.8-113.5% for SMZ, 107.1-166.6% for TC, and 93.5-130.3% for AFM1. The coefficients of variation were all less than 15%. As a whole, the developed multiple lateral flow immunoassay showed potential as a highly reliable and excellent tool for the rapid and sensitive screening of MEL, ENR, SMZ, TC, and AFM1 in milk.
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Affiliation(s)
- Guangjian Xue
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Mengyun Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Tingting Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xuechen Fang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Jiaqi Yin
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Juan Peng
- School of Food Science, Nanchang University, Nanchang 330047, China.
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26
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Shao Y, Zhou Y, Chen N, Xu W, Zhou H, Lai W, Huang X, Xiang X, Ye Q, Zhang J, Wang J, Parak WJ, Wu Q, Ding Y. Synthesizing Submicron Polyelectrolyte Capsules to Boost Enzyme Immobilization and Enhance Enzyme-Based Immunoassays. ACS Omega 2023; 8:12393-12403. [PMID: 37033870 PMCID: PMC10077544 DOI: 10.1021/acsomega.3c00180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 03/10/2023] [Indexed: 06/19/2023]
Abstract
Polyelectrolyte capsules (PCs) exhibit attractive superiorities in enzyme immobilization, including providing a capacious microenvironment for enzyme conformational freedom, highly effective mass transfer, and protecting enzymes from the external environment. Herein, we provide the first systemic evaluation of submicron PCs (SPCs, 500 nm) for enzyme immobilization. The catalytic kinetics results show that SPC encapsulation affected the affinities of enzymes and substrates but significantly enhanced their catalytic activity. The stability test indicates that SPC-encapsulated horseradish peroxidase (HRP) exhibits ultrahigh resistance to external harsh conditions and has a longer storage life than that of soluble HRP. The proposed encapsulation strategy enables 7.73-, 2.22-, and 11.66-fold relative activities when working at a pH as low as 3, at a NaCl concentration as high as 500 mM, and at a trypsin concentration as high as 10 mg/mL. We find that SPC encapsulation accelerates the cascade reaction efficiency of HRP and glucose oxidase. Owing to SPCs enhancing the catalytic activity of the loaded enzymes, we established an amplified enzyme-linked immunosorbent assay (ELISA) for the detection of Escherichia coli O157:H7 using HRP-loaded SPCs. The detection sensitivity of SPC-improved ELISA was found to be 280 times greater than that of conventional HRP-based ELISA. Altogether, we provide an elaborate evaluation of 500 nm SPCs on enzyme immobilization and its application in the ultrasensitive detection of foodborne pathogens. This evaluation provides evidence to reveal the potential advantage of SPCs on enzyme immobilization for enzyme-based immunoassays. It has excellent biological activity and strong stability and broadens the application prospect in urine, soy sauce, sewage, and other special samples.
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Affiliation(s)
- Yanna Shao
- Department
of Food Science and Engineering, Institute of Food Safety and Nutrition,
College of Science & Engineering, College of Life Science and
Technology, Jinan University, Guangzhou 510632, China
- Institute
of Microbiology; State Key Laboratory of Applied Microbiology Southern
China; Key Laboratory of Agricultural Microbiomics and Precision Application,
Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key
Laboratory of Microbial Safety and Health, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Yaofeng Zhou
- Center
for Hybrid Nanostructures (CHyN), Universität Hamburg, 22607 Hamburg, Germany
- State
Key Laboratory of Food Science and Technology, School of Food Science
and Technology, Nanchang University, Nanchang 330047, China
| | - Nuo Chen
- Department
of Food Science and Engineering, Institute of Food Safety and Nutrition,
College of Science & Engineering, College of Life Science and
Technology, Jinan University, Guangzhou 510632, China
- Institute
of Microbiology; State Key Laboratory of Applied Microbiology Southern
China; Key Laboratory of Agricultural Microbiomics and Precision Application,
Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key
Laboratory of Microbial Safety and Health, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Wenxing Xu
- Department
of Food Science and Engineering, Institute of Food Safety and Nutrition,
College of Science & Engineering, College of Life Science and
Technology, Jinan University, Guangzhou 510632, China
- Institute
of Microbiology; State Key Laboratory of Applied Microbiology Southern
China; Key Laboratory of Agricultural Microbiomics and Precision Application,
Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key
Laboratory of Microbial Safety and Health, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Huan Zhou
- Department
of Food Science and Engineering, Institute of Food Safety and Nutrition,
College of Science & Engineering, College of Life Science and
Technology, Jinan University, Guangzhou 510632, China
- Institute
of Microbiology; State Key Laboratory of Applied Microbiology Southern
China; Key Laboratory of Agricultural Microbiomics and Precision Application,
Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key
Laboratory of Microbial Safety and Health, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Weihua Lai
- State
Key Laboratory of Food Science and Technology, School of Food Science
and Technology, Nanchang University, Nanchang 330047, China
| | - Xiaolin Huang
- State
Key Laboratory of Food Science and Technology, School of Food Science
and Technology, Nanchang University, Nanchang 330047, China
| | - Xinran Xiang
- Institute
of Microbiology; State Key Laboratory of Applied Microbiology Southern
China; Key Laboratory of Agricultural Microbiomics and Precision Application,
Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key
Laboratory of Microbial Safety and Health, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Qinghua Ye
- Institute
of Microbiology; State Key Laboratory of Applied Microbiology Southern
China; Key Laboratory of Agricultural Microbiomics and Precision Application,
Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key
Laboratory of Microbial Safety and Health, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Jumei Zhang
- Institute
of Microbiology; State Key Laboratory of Applied Microbiology Southern
China; Key Laboratory of Agricultural Microbiomics and Precision Application,
Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key
Laboratory of Microbial Safety and Health, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Juan Wang
- College
of Food Science, South China Agricultural
University, Guangzhou 510432, China
| | - Wolfgang J. Parak
- Center
for Hybrid Nanostructures (CHyN), Universität Hamburg, 22607 Hamburg, Germany
| | - Qingping Wu
- Institute
of Microbiology; State Key Laboratory of Applied Microbiology Southern
China; Key Laboratory of Agricultural Microbiomics and Precision Application,
Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key
Laboratory of Microbial Safety and Health, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Yu Ding
- Department
of Food Science and Engineering, Institute of Food Safety and Nutrition,
College of Science & Engineering, College of Life Science and
Technology, Jinan University, Guangzhou 510632, China
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27
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Zhang G, Hu H, Deng S, Xiao X, Xiong Y, Peng J, Lai W. An integrated colorimetric and photothermal lateral flow immunoassay based on bimetallic Ag-Au urchin-like hollow structures for the sensitive detection of E. coli O157:H7. Biosens Bioelectron 2023; 225:115090. [PMID: 36701950 DOI: 10.1016/j.bios.2023.115090] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [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: 11/10/2022] [Revised: 01/16/2023] [Accepted: 01/19/2023] [Indexed: 01/22/2023]
Abstract
Lateral flow immunoassay (LFIA) with gold nanoparticles (AuNPs) as the signal reporter is widely used for the rapid detection of food-borne pathogens. However, it is difficult for LFIA to achieve sensitive detection due to the insufficient colorimetric signal brightness of AuNPs. Herein, we developed a bimetallic Ag-Au urchin-like hollow nanospheres (BUHNPs) based on the simple and rapid synthesis through co-reduction and galvanic replacement reactions. The BUHNPs exhibit superb colorimetric signal brightness, strong photothermal signals and high antibody coupling efficiency. The obtained colorimetric and photothermal LFIA (BUHNPs-CM-LFIA and BUHNPs-PT-LFIA) based on BUHNPs were used for the sensitive detection of a pathogenic bacterium (Escherichia coli O157:H7). The limit of detection values of the colorimetric and photothermal quantitative analysis were 2.48 × 103 and 5.50 × 102 CFU mL-1, which were approximately 4-fold and 18-fold lower than that of AuNPs-LFIA (9.92 × 103 CFU mL-1), respectively. This work suggests that a dual-readout LFIA with BUHNPs as a promising signal reporter can be used to improve the detection performance of LFIA and construct a more accurate and sensitive detection platform.
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Affiliation(s)
- Gan Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Hong Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Shengliang Deng
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China.
| | - Xiaoyue Xiao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Juan Peng
- School of Food Science, Nanchang University, Nanchang, 330047, China.
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China.
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28
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Zhang G, Zhang G, Lai X, Su L, He W, Lai W, Deng S. Polyethyleneimine-induced fluorescence enhancement strategy for AIEgen: the mechanism and application. Anal Bioanal Chem 2023; 415:1347-1355. [PMID: 36693956 DOI: 10.1007/s00216-023-04526-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 11/25/2022] [Revised: 12/24/2022] [Accepted: 01/04/2023] [Indexed: 01/26/2023]
Abstract
Aggregation-induced emission luminogens (AIEgens) are attracting extensive research attention in the biosensor fields. Herein, we report a new polyethyleneimine (PEI)-induced strategy for enhancing luminescence of TCBPE (an AIEgen) to promote its development in biosensor. The copolymer dots (TCBPE-PEI) with high quantum yield (39.7%) and outstanding stability were synthesized via a one-pot method. The fluorescence enhancement mechanism based on the PEI strategy originated from the restriction of intramolecular motions of TCBPEs and the form of donor-acceptor structures to decrease the inherent energy bandgap. Benefiting from chelating property of TCBPE-PEI by Cu2+, a fluorescence-quenching sensor for Cu2+ detection was developed based on the fluorescence quenching of the electron transfer effect. Especially, a good linear range of 10-250 nM with a low limit of detection 1.1 nM was achieved, and it was further applied in samples successfully. The current work provides a novel approach to fabricate AIEgen biosensors and shows great potential in Cu2+ detection.
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Affiliation(s)
- Gan Zhang
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China.,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Ganggang Zhang
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China
| | - Xiaocui Lai
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China.,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Liu Su
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China
| | - Weihua He
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China.
| | - Shengliang Deng
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China.
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29
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Wu Y, Lv K, Zheng B, Hao X, Lai W, Xia X, Yang G, Huang S, Luo Z, Yang G, Lv C, An Z, Peng W, Song T, Yuan Q. Development and validation of a clinical nomogram predicting detrusor underactivity via symptoms and noninvasive test parameters in men with benign prostatic hyperplasia. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00080-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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30
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Xing K, Bao H, Ding N, Xiong Y, Peng J, Lai W. Plasmonic gold nanoparticles aggregate based on charge neutralization for the convenient detection of fumonisin B1 by colorimetry and SERS. Food Control 2023. [DOI: 10.1016/j.foodcont.2023.109610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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31
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Guo G, Wu Y, Liu Y, Wang Z, Xu G, Wang X, Liang F, Lai W, Xiao X, Zhu Q, Zhong S. Exploring the causal effects of the gut microbiome on serum lipid levels: A two-sample Mendelian randomization analysis. Front Microbiol 2023; 14:1113334. [PMID: 36876057 PMCID: PMC9978097 DOI: 10.3389/fmicb.2023.1113334] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/27/2023] [Indexed: 02/18/2023] Open
Abstract
Background The gut microbiome was reported to be associated with dyslipidemia in previous observational studies. However, whether the composition of the gut microbiome has a causal effect on serum lipid levels remains unclear. Objective A two-sample Mendelian randomization (MR) analysis was conducted to investigate the potential causal relationships between gut microbial taxa and serum lipid levels, including low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), total cholesterol (TC), and log-transformed triglyceride (TG) levels. Materials and methods Summary statistics of genome-wide association studies (GWASs) for the gut microbiome and four blood lipid traits were obtained from public datasets. Five recognized MR methods were applied to assess the causal estimates, among which, the inverse-variance weighted (IVW) regression was used as the primary MR method. A series of sensitivity analyses were performed to test the robustness of the causal estimates. Results The combined results from the five MR methods and sensitivity analysis showed 59 suggestive causal associations and four significant causal associations. In particular, genus Terrisporobacter was associated with higher LDL-C (P IVW = 3.01 × 10-6) and TC levels (P IVW = 2.11 × 10-4), phylum Actinobacteria was correlated with higher LDL-C level (P IVW = 4.10 × 10-4), and genus Oscillospira was associated with lower TG level (P IVW = 2.19 × 10-6). Conclusion This research may provide novel insights into the causal relationships of the gut microbiome on serum lipid levels and new therapeutic or prevention strategies for dyslipidemia.
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Affiliation(s)
- Gongjie Guo
- School of Medicine, South China University of Technology, Guangzhou, China.,Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Yonglin Wu
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Yingjian Liu
- School of Medicine, South China University of Technology, Guangzhou, China.,Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Zixian Wang
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Guifeng Xu
- School of Medicine, South China University of Technology, Guangzhou, China.,Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Xipei Wang
- Laboratory of Phase I Clinical Trials, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,Research Center of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Feiqing Liang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Weihua Lai
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Xiao Xiao
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Qian Zhu
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Shilong Zhong
- School of Medicine, South China University of Technology, Guangzhou, China.,Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China.,School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China.,Laboratory of Phase I Clinical Trials, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
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32
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Zhu Q, Qin M, Wang Z, Wu Y, Chen X, Liu C, Ma Q, Liu Y, Lai W, Chen H, Cai J, Liu Y, Lei F, Zhang B, Zhang S, He G, Li H, Zhang M, Zheng H, Chen J, Huang M, Zhong S. Correction: Plasma metabolomics provides new insights into the relationship between metabolites and outcomes and left ventricular remodeling of coronary artery disease. Cell Biosci 2022; 12:201. [PMID: 36527165 PMCID: PMC9758852 DOI: 10.1186/s13578-022-00926-z] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2022] [Indexed: 12/23/2022] Open
Affiliation(s)
- Qian Zhu
- grid.410643.4Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.410643.4Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
| | - Min Qin
- grid.410643.4Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.410643.4Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
| | - Zixian Wang
- grid.410643.4Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.410643.4Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China
| | - Yonglin Wu
- grid.410643.4Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.410643.4Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China
| | - Xiaoping Chen
- grid.216417.70000 0001 0379 7164Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008 Hunan China
| | - Chen Liu
- grid.412615.50000 0004 1803 6239Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080 Guangdong China
| | - Qilin Ma
- grid.216417.70000 0001 0379 7164Department of Cardiology, Xiangya Hospital, Central South University, Changsha, 410008 Hunan China
| | - Yibin Liu
- grid.410643.4Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.410643.4Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
| | - Weihua Lai
- grid.410643.4Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China
| | - Hui Chen
- grid.410643.4Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
| | - Jingjing Cai
- grid.49470.3e0000 0001 2331 6153Institute of Model Animal, Wuhan University, Wuhan, 430072 Hubei China
| | - Yemao Liu
- grid.49470.3e0000 0001 2331 6153Institute of Model Animal, Wuhan University, Wuhan, 430072 Hubei China
| | - Fang Lei
- grid.49470.3e0000 0001 2331 6153Institute of Model Animal, Wuhan University, Wuhan, 430072 Hubei China
| | - Bin Zhang
- grid.410643.4Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
| | - Shuyao Zhang
- grid.258164.c0000 0004 1790 3548Department of Pharmacy, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, 510220 Guangdong China
| | - Guodong He
- grid.410643.4Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
| | - Hanping Li
- grid.410643.4Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China
| | - Mingliang Zhang
- Wuhan Metware Biotechnology Co., Ltd., Wuhan, 430000 Hubei China
| | - Hui Zheng
- Wuhan Metware Biotechnology Co., Ltd., Wuhan, 430000 Hubei China
| | - Jiyan Chen
- grid.410643.4Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China
| | - Min Huang
- grid.12981.330000 0001 2360 039XInstitute of Clinical Pharmacology, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006 Guangdong China
| | - Shilong Zhong
- grid.410643.4Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.410643.4Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
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33
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Fang B, Xiong Q, Duan H, Xiong Y, Lai W. Tailored quantum dots for enhancing sensing performance of lateral flow immunoassay. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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34
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Luo Y, Shan S, Wang S, Li J, Liu D, Lai W. Accurate Detection of Salmonella Based on Microfluidic Chip to Avoid Aerosol Contamination. Foods 2022; 11:foods11233887. [PMID: 36496694 PMCID: PMC9740996 DOI: 10.3390/foods11233887] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 11/13/2022] [Accepted: 11/28/2022] [Indexed: 12/04/2022] Open
Abstract
Salmonella is a type of common foodborne pathogen of global concern, seriously endangering human health. In molecular biological detection of Salmonella, the method of amplifying DNA often faces the problem of aerosol pollution. In this study, a microfluidic chip was developed to integrate loop-mediated isothermal amplification (LAMP) and clustered regularly interspaced short palindromic repeats (CRISPR)/Cas12a system to detect Salmonella. The LAMP reaction solution was initially injected into the chamber to amplify at 65 °C for 20 min; the CRISPR/Cas12a reaction solution was subsequently injected to mix with the amplicons for fluorescent signal production at 43 °C for 30 min. Then, the results can be confirmed by naked eyes under 495 nm light or by a fluorescence immunochromatographic reader. The detection limit of this method for Salmonella DNA was 118 pg/μL. The sensitivity and specificity of this method was 100%. Furthermore, this method was used to detect Salmonella after enrichment for 4 h in salmon and chicken samples spiked with 30 CFU/25 g, and was verified to have a stable detection capability in real samples. The microfluidic chip integrated with the LAMP and CRISPR/Cas12a system not only provides a possibility of highly sensitive endpoint fluorescent visual detection of a foodborne pathogen, but also greatly eliminates the risk of aerosol contamination.
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Affiliation(s)
- Yining Luo
- State Key Laboratory of Food Science and Technology, Nanchang University, 235 East Nanjing Road, Nanchang 330047, China
| | - Shan Shan
- College of Life Science, National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang 330022, China
- Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease, Jiangxi Province Centre for Disease Control and Prevention, 555 East Beijing Road, Nanchang 330029, China
| | - Shuanglong Wang
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, China
| | - Jinlin Li
- College of Life Science, National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang 330022, China
| | - Daofeng Liu
- Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease, Jiangxi Province Centre for Disease Control and Prevention, 555 East Beijing Road, Nanchang 330029, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, 235 East Nanjing Road, Nanchang 330047, China
- Correspondence:
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Tian X, Wu Y, Duan C, Zhou X, Li Y, Zheng J, Lai W, Zhang S, Cao L, Zhong S. Tryptophan was metabolized into beneficial metabolites against coronary heart disease or prevented from producing harmful metabolites by the in vitro drug screening model based on Clostridium sporogenes. Front Microbiol 2022; 13:1013973. [DOI: 10.3389/fmicb.2022.1013973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 09/16/2022] [Indexed: 11/18/2022] Open
Abstract
In our previous study of 2,130 Chinese patients with coronary heart disease (CHD), we found that tryptophan (TRP) metabolites contributed to elevated risks of death. Many TRP-derived metabolites require the participation of intestinal bacteria to produce, and they play an important role in the pathogenesis of metabolic diseases such as CHD. So it is necessary to metabolize TRP into beneficial metabolites against CHD or prevent the production of harmful metabolites through external intervention. Indole-3-butyric acid (IBA) may be a key point of gut microbiota that causes TRP metabolism disorder and affects major adverse cardiovascular events in CHD. Therefore, this study aimed to develop a method based on in vitro culture bacteria to evaluate the effects of IBA on specific microbial metabolites quickly. We detected the concentrations of TRP and its metabolites in 11 bacterial strains isolated from feces using liquid chromatography–mass spectrometry, and selected Clostridium sporogenes as the model strain. Then, IBA was used in our model to explore its effect on TRP metabolism. Results demonstrated that the optimal culture conditions of C. sporogenes were as follows: initial pH, 6.8; culture temperature, 37°C; and inoculum amount, 2%. Furthermore, we found that IBA increases the production of TRP and 5-HIAA by intervening TRP metabolism, and inhibits the production of KYNA. This new bacteria-specific in vitro model provides a flexible, reproducible, and cost-effective tool for identifying harmful agents that can decrease the levels of beneficial TRP metabolites. It will be helpful for researchers when developing innovative strategies for studying gut microbiota.
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Zhu Q, Qin M, Wang Z, Wu Y, Chen X, Liu C, Ma Q, Liu Y, Lai W, Chen H, Cai J, Liu Y, Lei F, Zhang B, Zhang S, He G, Li H, Zhang M, Zheng H, Chen J, Huang M, Zhong S. Plasma metabolomics provides new insights into the relationship between metabolites and outcomes and left ventricular remodeling of coronary artery disease. Cell Biosci 2022; 12:173. [PMID: 36242008 PMCID: PMC9569076 DOI: 10.1186/s13578-022-00863-x] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 07/28/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Coronary artery disease (CAD) is a metabolically perturbed pathological condition. However, the knowledge of metabolic signatures on outcomes of CAD and their potential causal effects and impacts on left ventricular remodeling remains limited. We aim to assess the contribution of plasma metabolites to the risk of death and major adverse cardiovascular events (MACE) as well as left ventricular remodeling. RESULTS In a prospective study with 1606 Chinese patients with CAD, we have identified and validated several independent metabolic signatures through widely-targeted metabolomics. The predictive model respectively integrating four metabolic signatures (dulcitol, β-pseudouridine, 3,3',5-Triiodo-L-thyronine, and kynurenine) for death (AUC of 83.7% vs. 76.6%, positive IDI of 0.096) and metabolic signatures (kynurenine, lysoPC 20:2, 5-methyluridine, and L-tryptophan) for MACE (AUC of 67.4% vs. 59.8%, IDI of 0.068) yielded better predictive value than trimethylamine N-oxide plus clinical model, which were successfully applied to predict patients with high risks of death (P = 0.0014) and MACE (P = 0.0008) in the multicenter validation cohort. Mendelian randomisation analysis showed that 11 genetically inferred metabolic signatures were significantly associated with risks of death or MACE, such as 4-acetamidobutyric acid, phenylacetyl-L-glutamine, tryptophan metabolites (kynurenine, kynurenic acid), and modified nucleosides (β-pseudouridine, 2-(dimethylamino) guanosine). Mediation analyses show that the association of these metabolites with the outcomes could be partly explained by their roles in promoting left ventricular dysfunction. CONCLUSIONS This study provided new insights into the relationship between plasma metabolites and clinical outcomes and its intermediate pathological process left ventricular dysfunction in CAD. The predictive model integrating metabolites can help to improve the risk stratification for death and MACE in CAD. The metabolic signatures appear to increase death or MACE risks partly by promoting adverse left ventricular dysfunction, supporting potential therapeutic targets of CAD for further investigation.
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Affiliation(s)
- Qian Zhu
- grid.413405.70000 0004 1808 0686Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.413405.70000 0004 1808 0686Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
| | - Min Qin
- grid.413405.70000 0004 1808 0686Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.413405.70000 0004 1808 0686Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
| | - Zixian Wang
- grid.413405.70000 0004 1808 0686Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.413405.70000 0004 1808 0686Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China
| | - Yonglin Wu
- grid.413405.70000 0004 1808 0686Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.413405.70000 0004 1808 0686Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China
| | - Xiaoping Chen
- grid.452223.00000 0004 1757 7615Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008 Hunan China
| | - Chen Liu
- grid.412615.50000 0004 1803 6239Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080 Guangdong China
| | - Qilin Ma
- grid.452223.00000 0004 1757 7615Department of Cardiology, Xiangya Hospital, Central South University, Changsha, 410008 Hunan China
| | - Yibin Liu
- grid.413405.70000 0004 1808 0686Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.413405.70000 0004 1808 0686Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
| | - Weihua Lai
- grid.413405.70000 0004 1808 0686Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China
| | - Hui Chen
- grid.413405.70000 0004 1808 0686Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
| | - Jingjing Cai
- grid.49470.3e0000 0001 2331 6153Institute of Model Animal, Wuhan University, Wuhan, 430072 Hubei China
| | - Yemao Liu
- grid.49470.3e0000 0001 2331 6153Institute of Model Animal, Wuhan University, Wuhan, 430072 Hubei China
| | - Fang Lei
- grid.49470.3e0000 0001 2331 6153Institute of Model Animal, Wuhan University, Wuhan, 430072 Hubei China
| | - Bin Zhang
- grid.413405.70000 0004 1808 0686Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
| | - Shuyao Zhang
- grid.258164.c0000 0004 1790 3548Department of Pharmacy, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, 510220 Guangdong China
| | - Guodong He
- grid.413405.70000 0004 1808 0686Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
| | - Hanping Li
- grid.413405.70000 0004 1808 0686Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China
| | - Mingliang Zhang
- Wuhan Metware Biotechnology Co., Ltd., Wuhan, 430000 Hubei China
| | - Hui Zheng
- Wuhan Metware Biotechnology Co., Ltd., Wuhan, 430000 Hubei China
| | - Jiyan Chen
- grid.413405.70000 0004 1808 0686Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China
| | - Min Huang
- grid.12981.330000 0001 2360 039XInstitute of Clinical Pharmacology, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006 Guangdong China
| | - Shilong Zhong
- grid.413405.70000 0004 1808 0686Department of Pharmacy, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.413405.70000 0004 1808 0686Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080 Guangdong China ,grid.79703.3a0000 0004 1764 3838School of Medicine, South China University of Technology, Guangzhou, 510080 Guangdong China
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Torkington J, Harries R, O'Connell S, Knight L, Islam S, Bashir N, Watkins A, Fegan G, Cornish J, Rees B, Cole H, Jarvis H, Jones S, Russell I, Bosanquet D, Cleves A, Sewell B, Farr A, Zbrzyzna N, Fiera N, Ellis-Owen R, Hilton Z, Parry C, Bradbury A, Wall P, Hill J, Winter D, Cocks K, Harris D, Hilton J, Vakis S, Hanratty D, Rajagopal R, Akbar F, Ben-Sassi A, Francis N, Jones L, Williamson M, Lindsey I, West R, Smart C, Ziprin P, Agarwal T, Faulkner G, Pinkney T, Vimalachandran D, Lawes D, Faiz O, Nisar P, Smart N, Wilson T, Myers A, Lund J, Smolarek S, Acheson A, Horwood J, Ansell J, Phillips S, Davies M, Davies L, Bird S, Palmer N, Williams M, Galanopoulos G, Rao PD, Jones D, Barnett R, Tate S, Wheat J, Patel N, Rahmani S, Toynton E, Smith L, Reeves N, Kealaher E, Williams G, Sekaran C, Evans M, Beynon J, Egan R, Qasem E, Khot U, Ather S, Mummigati P, Taylor G, Williamson J, Lim J, Powell A, Nageswaran H, Williams A, Padmanabhan J, Phillips K, Ford T, Edwards J, Varney N, Hicks L, Greenway C, Chesters K, Jones H, Blake P, Brown C, Roche L, Jones D, Feeney M, Shah P, Rutter C, McGrath C, Curtis N, Pippard L, Perry J, Allison J, Ockrim J, Dalton R, Allison A, Rendell J, Howard L, Beesley K, Dennison G, Burton J, Bowen G, Duberley S, Richards L, Giles J, Katebe J, Dalton S, Wood J, Courtney E, Hompes R, Poole A, Ward S, Wilkinson L, Hardstaff L, Bogden M, Al-Rashedy M, Fensom C, Lunt N, McCurrie M, Peacock R, Malik K, Burns H, Townley B, Hill P, Sadat M, Khan U, Wignall C, Murati D, Dhanaratne M, Quaid S, Gurram S, Smith D, Harris P, Pollard J, DiBenedetto G, Chadwick J, Hull R, Bach S, Morton D, Hollier K, Hardy V, Ghods M, Tyrrell D, Ashraf S, Glasbey J, Ashraf M, Garner S, Whitehouse A, Yeung D, Mohamed SN, Wilkin R, Suggett N, Lee C, Bagul A, McNeill C, Eardley N, Mahapatra R, Gabriel C, Datt P, Mahmud S, Daniels I, McDermott F, Nodolsk M, Park L, Scott H, Trickett J, Bearn P, Trivedi P, Frost V, Gray C, Croft M, Beral D, Osborne J, Pugh R, Herdman G, George R, Howell AM, Al-Shahaby S, Narendrakumar B, Mohsen Y, Ijaz S, Nasseri M, Herrod P, Brear T, Reilly JJ, Sohal A, Otieno C, Lai W, Coleman M, Platt E, Patrick A, Pitman C, Balasubramanya S, Dickson E, Warman R, Newton C, Tani S, Simpson J, Banerjee A, Siddika A, Campion D, Humes D, Randhawa N, Saunders J, Bharathan B, Hay O. Incisional hernia following colorectal cancer surgery according to suture technique: Hughes Abdominal Repair Randomized Trial (HART). Br J Surg 2022; 109:943-950. [PMID: 35979802 PMCID: PMC10364691 DOI: 10.1093/bjs/znac198] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/09/2022] [Accepted: 05/13/2022] [Indexed: 11/14/2022]
Abstract
BACKGROUND Incisional hernias cause morbidity and may require further surgery. HART (Hughes Abdominal Repair Trial) assessed the effect of an alternative suture method on the incidence of incisional hernia following colorectal cancer surgery. METHODS A pragmatic multicentre single-blind RCT allocated patients undergoing midline incision for colorectal cancer to either Hughes closure (double far-near-near-far sutures of 1 nylon suture at 2-cm intervals along the fascia combined with conventional mass closure) or the surgeon's standard closure. The primary outcome was the incidence of incisional hernia at 1 year assessed by clinical examination. An intention-to-treat analysis was performed. RESULTS Between August 2014 and February 2018, 802 patients were randomized to either Hughes closure (401) or the standard mass closure group (401). At 1 year after surgery, 672 patients (83.7 per cent) were included in the primary outcome analysis; 50 of 339 patients (14.8 per cent) in the Hughes group and 57 of 333 (17.1 per cent) in the standard closure group had incisional hernia (OR 0.84, 95 per cent c.i. 0.55 to 1.27; P = 0.402). At 2 years, 78 patients (28.7 per cent) in the Hughes repair group and 84 (31.8 per cent) in the standard closure group had incisional hernia (OR 0.86, 0.59 to 1.25; P = 0.429). Adverse events were similar in the two groups, apart from the rate of surgical-site infection, which was higher in the Hughes group (13.2 versus 7.7 per cent; OR 1.82, 1.14 to 2.91; P = 0.011). CONCLUSION The incidence of incisional hernia after colorectal cancer surgery is high. There was no statistical difference in incidence between Hughes closure and mass closure at 1 or 2 years. REGISTRATION NUMBER ISRCTN25616490 (http://www.controlled-trials.com).
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Zhang G, Deng S, Fang B, Zhang G, Lai X, Su L, He W, Lai W. Lateral flow immunoassay based on polydopamine-coated metal-organic framework for the visual detection of enrofloxacin in milk. Anal Bioanal Chem 2022; 414:7315-7323. [PMID: 36018333 DOI: 10.1007/s00216-022-04283-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 06/20/2022] [Revised: 08/02/2022] [Accepted: 08/11/2022] [Indexed: 11/24/2022]
Abstract
Herein, we report a new polydopamine (PDA)-coated metal-organic framework (MOF) as a label to improve the sensitivity of lateral flow immunoassay (LFIA). The MOF, UiO-66-NH2, was synthesized via the hydrothermal method, and it exhibited the advantageous features of ordered pore structure, strong absorbance, and high specific surface area. Subsequently, UiO-66-NH2 was coated with PDA to improve the antibody coupling effectivity and light absorption ability. The optical intensity and antibody coupling efficiency of UiO-66@PDA were superior to those of gold nanoparticles (AuNPs). Under the optimum condition, the limit of detection and cutoff value of UiO-66@PDA-LFIA in detecting enrofloxacin were 0.045 and 1.0 ng/mL, respectively, which were lower than those of AuNPs-LFIA (0.095 and 5 ng/mL). The recoveries of UiO-66@PDA-LFIA in low-fat milk and whole milk were 85.6-107.4% and 79.3-115.5%, respectively, with coefficients of variation of 2.91-9.59% and 3.91-11.8%, respectively, as further confirmed by liquid chromatography-tandem mass spectrometry. These results indicate that UiO-66@PDA can be used as a novel probe for LFIA development and applications. Graphical abstract.
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Affiliation(s)
- Gan Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China.,Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China
| | - Shengliang Deng
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China.
| | - Bolong Fang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Ganggang Zhang
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China
| | - Xiaocui Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China.,Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China
| | - Liu Su
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China
| | - Weihua He
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China.
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Li F, Lai W, Kang Y. [Successful prediction and the process of the weaning of veno-arterial extracorporeal membrane oxygenation]. Zhonghua Yi Xue Za Zhi 2022; 102:1878-1881. [PMID: 35768383 DOI: 10.3760/cma.j.cn112137-20220319-00586] [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
The weaning of veno-arterial extracorporeal membrane oxygenation (VA-ECMO) is one of the clinical challenges, and hospitals have developed experience-based strategies, so there is still a lack of unified standards and procedures for weaning. This paper discusses this issue from the definition of weaning success, evaluation of patients before weaning, predictive indicators, weaning process, etc. Summarizing research progress and problems so that providing guidance for the development of ECMO in the future, such as perfecting weaning process and putting forward scoring system to predict weaning success and clinical outcome.
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Affiliation(s)
- F Li
- Department of Critical Care Medicine, West China Hospital of Sichuan University, Chengdu 610041, China
| | - W Lai
- Department of Critical Care Medicine, West China Hospital of Sichuan University, Chengdu 610041, China
| | - Y Kang
- Department of Critical Care Medicine, West China Hospital of Sichuan University, Chengdu 610041, China
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Zhang K, Cai H, Lu M, Wei D, Yin J, Ding N, Lai W, Peng J. Quantum dot nanobead immunochromatographic assay based on bispecific monoclonal antibody for the simultaneous detection of aflatoxin B 1 and amantadine. FOOD AGR IMMUNOL 2022. [DOI: 10.1080/09540105.2022.2080188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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)
- Kezhuo Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, People’s Republic of China
| | - Huadong Cai
- Ganzhou City Animal Husbandry Development & Animal Epidemic Diseases Prevention and Control Center, Ganzhou, People’s Republic of China
| | - Min Lu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, People’s Republic of China
| | - Daixian Wei
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, People’s Republic of China
| | - Jiaqi Yin
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, People’s Republic of China
| | - Nengshui Ding
- State Key Laboratory of Food Safety Technology for Meat Products, Xiamen, People’s Republic of China
- State Key Lab Pig Genet Improvement & Prod Techno, Jiangxi Agricultural University, Nanchang, People’s Republic of China
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, People’s Republic of China
| | - Juan Peng
- School of Food Science, Nanchang University, Nanchang, People’s Republic of China
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Hu H, Xia J, Ding N, Xiong Y, Xing K, Fang B, Huo X, Lai W. A novel method based on Ag-Au nanorings with tunable plasmonic properties for the sensitive detection of amantadine. J Hazard Mater 2022; 431:128498. [PMID: 35278944 DOI: 10.1016/j.jhazmat.2022.128498] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/30/2022] [Accepted: 02/12/2022] [Indexed: 06/14/2023]
Abstract
To prevent the toxic effect of amantadine (AMD) on humans, a sensitive and direct detection method is required. The conventional enzyme-linked immunosorbent assay (ELISA) usually shows a monochromatic gradient color variation with the concentration of the target; hence, it is not a sensitive method for naked-eye detection. In this work, Ag-Au nanorings with highly tunable plasmon properties were synthesized as colorimetric nanosensors. The growth of Ag on the hollow nanorings led to rich color variations. Ag-Au nanorings were integrated into ELISA for the sensitive detection of AMD with the naked eye. The proposed method showed high sensitivity for the qualitative and quantitative detection of AMD, the visible cut-off value (0.2 ng mL-1) and limit of detection (0.071 ng mL-1) were 10-fold and 4.7-fold lower, respectively, than those of conventional ELISA. This method showed a linear range of 0.08-2 ng mL-1 and 4-12 ng mL-1. The detection results of this method on 100 samples (food samples and municipal water) agreed well with those of liquid chromatography-tandem mass spectrometry. The proposed plasmonic ELISA has high sensitivity, easy operation, and naked-eye readout.
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Affiliation(s)
- Hong Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Jun Xia
- Jiangxi Institute of Veterinary Drug and Feedstuff Control, Nanchang, China
| | - Nengshui Ding
- State Key Laboratory of Food Safety Technology for Meat Products, Xiamen 361116, China; State Key Lab Pig Genet Improvement & Prod Techno, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Keyu Xing
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Bolong Fang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xi Huo
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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Lai W, Wang W, Guo L, Lu C. Longitudinal associations between problematic Internet use, self-esteem, and depressive symptoms among Chinese adolescents. Eur Psychiatry 2022. [PMCID: PMC9565732 DOI: 10.1192/j.eurpsy.2022.385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction
Adolescents spend more time on the Internet than adults, making them susceptible to problematic Internet use (PIU). Evidence shows that PIU has a negative impact on self-esteem among adolescents, disturbing the development of emotional regulation, which makes them more likely to develop depressive symptoms subsequently. However, there is lack of literature focusing on the process that self-esteem may mediate the association between PIU and depressive symptoms.
Objectives
This study aimed to examine the prospective links between PIU, self-esteem, and depressive symptoms in adolescence.
Methods
A total of 1,736 adolescents completed this longitudinal study. The baseline survey was conducted in 2019, and the follow-up surveys were performed at 1-year and 2-year later. Problematic Internet use, self-esteem, and depressive symptoms were measured. A cascade model was used to examine the longitudinal associations between PIU, self-esteem, and depressive symptoms.
Results
The mean (SD) age of participants was 13.6 (1.5) years at baseline. The final results observed significant within-time associations between PIU, self-esteem, and depressive symptoms at each time point. PIU and low level of self-esteem could predict subsequent depressive symptoms among adolescents, and depressive symptoms were also associated with subsequent PIU and self-esteem.
Conclusions
Both problematic Internet use and self-esteem show bidirectional predictions with depressive symptoms among Chinese adolescents. Health-related professionals, schools and families should be aware of the findings of bidirectional associations. Adolescents with problematic Internet use and lower self-esteem should be paid more attention to attenuate the risk of developing depressive symptoms.
Disclosure
No significant relationships.
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Han Y, Lu X, Lai W, Liang R, Yang M, Ouyang Q. [Identification of serological biomarkers for diagnosis of rheumatoid arthritis using a protein array-based approach]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:733-739. [PMID: 35673918 DOI: 10.12122/j.issn.1673-4254.2022.05.15] [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: 11/24/2022]
Abstract
OBJECTIVE To study the cytokine patterns in patients with rheumatoid arthritis (RA) and healthy individuals and identify candidate serum biomarkers for clinical diagnosis of RA. METHODS This study was conducted among 59 patients diagnosed with RA in our hospital from 2015 to 2019 with 46 age- and gender-matched healthy subjects who received regular physical examinations in our hospital as the control group. Serological autoimmune profiles of 5 RA patients and 5 healthy control subjects were obtained from human cytokine microarrays. We selected 4 differentially expressed cytokines (LIMPII, ROBO3, Periostin and IGFBP-4) and 2 soluble cytokine receptors of interest (2B4 and Tie-2) and examined their serum levels using enzyme-linked immunosorbent assay in 54 RA patients and 41 healthy control subjects. Spearman correlation test was performed to assess the correlation of serum cytokine and soluble receptor expression levels with the clinical features including rheumatoid factor (RF), erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), disease activity score (DAS28) and health assessment questionnaire (HAQ). Receiver operating characteristic (ROC) curve was used to evaluate the diagnostic capability of these cytokines. RESULTS We identified 6 dysregulated cytokines and soluble receptors (2B4, LIMPII, Tie-2, ROBO3, periostin and IGFBP-4) in RA patients (P < 0.01). The serum levels of LIMPII, ROBO3 and periostin were significantly correlated with the disease activity indicators including RF (P < 0.001), CRP (P < 0.001), DAS28 (P < 0.001) and HAQ (P < 0.001) in RA patients. Among the 6 candidate cytokines, 2B4 showed the largest area under the curve (AUC) of 0.861 for RA diagnosis (P < 0.001), followed then by LIMPII, ROBO3, periostin, Tie-2 and IGFBP-4. CONCLUSION Serum levels of LIMPII, ROBO3 and periostin can be indicative of the disease activity of RA, and serum 2B4, LIMPII, periostin, ROBO3, IGFBP-4 and Tie-2 levels may serve as biomarkers for the diagnosis of RA.
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Affiliation(s)
- Y Han
- Department of Rheumatology and Immunology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - X Lu
- Department of Rheumatology and Immunology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - W Lai
- Department of Rheumatology and Immunology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - R Liang
- Department of Rheumatology and Immunology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - M Yang
- Department of Rheumatology and Immunology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Q Ouyang
- Department of Rheumatology and Immunology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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Xu G, Liu JE, Liu X, Zhong W, Wang Z, Li H, Xiao X, Chen J, Zhong S, Lai W. DNA methylation mediates the genetic variants on ticagrelor major metabolite elimination and platelet function recovery after ticagrelor discontinuation. Epigenomics 2022; 14:601-613. [PMID: 35574651 DOI: 10.2217/epi-2021-0461] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: To investigate the influence of DNA methylation on ticagrelor major metabolite M8 elimination and platelet function recovery after ticagrelor discontinuation. Materials & methods: Among healthy Chinese subjects, a causal inference test was conducted to identify CpG sites located on absorption, distribution, metabolism and excretion genes that mediate genetic variants on M8 elimination. Colocalization analysis was used to identify the CpG sites that shared causal variants with platelet function recovery. Results: cg05300248 (CHST9), cg05640674 (SLC22A5) and cg00846580 (DHRS7) mediated genetic variants on the M8 elimination. cg06338150 (NOTCH1) and cg17456097 (RPS6KA1) were demonstrated to have strong evidence of colocalization with platelet function recovery. Conclusion: The results provide new biological insights into the impact of DNA methylation on M8 elimination and platelet function recovery after ticagrelor discontinuation. Clinical trial registration: clinicaltrials.gov, identifier: NCT03092076.
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Affiliation(s)
- Guifeng Xu
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, P.R. China.,School of Medicine, South China University of Technology, Guangzhou, 510080, P.R. China
| | - Ju-E Liu
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, P.R. China
| | - Xiaoqi Liu
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, P.R. China
| | - Wanping Zhong
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, 510080, P.R. China
| | - Zixian Wang
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, 510080, P.R. China
| | - Hanping Li
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, 510080, P.R. China
| | - Xiao Xiao
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, P.R. China
| | - Jiyan Chen
- Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences, Guangzhou, 510080, P.R. China
| | - Shilong Zhong
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, P.R. China.,Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, 510080, P.R. China
| | - Weihua Lai
- Department of Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, P.R. China
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Xing K, Peng J, Chen W, Fang B, Liu D, Shan S, Zhang G, Huang Y, Lai W. Development of a label-free plasmonic gold nanoparticles aggregates sensor on the basis of charge neutralization for the detection of zearalenone. Food Chem 2022; 370:131365. [PMID: 34662795 DOI: 10.1016/j.foodchem.2021.131365] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [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: 05/19/2021] [Revised: 09/06/2021] [Accepted: 10/05/2021] [Indexed: 12/24/2022]
Abstract
Mycotoxin contamination of corn has been considered a serious problem because it can accumulate in different organs or tissues via ingestion or skin contact and cause several health problems in humans. We have constructed a label-free, colorimetric, and fluorescence dual-channel sensing platform for the detection of zearalenone. Here, we demonstrate that plasmonic gold nanoparticles aggregates could be rapidly formed on the basis of charge neutralization by positively charged SYBR Green I. The sensing platform allowed quantitative detection as low as 0.89 μg kg-1 and visual detection as low as 2.5 μg kg-1. The charge neutralization strategy eliminates a major source of instability in conventional gold nanoparticles colorimetric measurements and paves the way for accurate, label-free bioanalysis.
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Affiliation(s)
- Keyu Xing
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Juan Peng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Wenyao Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Bolong Fang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Daofeng Liu
- Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease, Jiangxi Province Center for Disease Control and Prevention, 555 East Beijing Road, Nanchang 330029, China
| | - Shan Shan
- College of Life Sciences, Jiangxi Normal University, Nanchang 330012, China
| | - Ganggang Zhang
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, China
| | - Yina Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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Wang Z, Xing K, Ding N, Wang S, Zhang G, Lai W. Lateral flow immunoassay based on dual spectral-overlapped fluorescence quenching of polydopamine nanospheres for sensitive detection of sulfamethazine. J Hazard Mater 2022; 423:127204. [PMID: 34555767 DOI: 10.1016/j.jhazmat.2021.127204] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [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: 06/10/2021] [Revised: 08/29/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
Herein, we propose a lateral flow immunoassay (LFIA) based on the dual spectral-overlapped fluorescence quenching of polydopamine nanospheres (PDANs) caused by the inner filter effect to sensitively detect sulfamethazine (SMZ). The fluorescence quenching LFIA device consists of four parts: absorbent pad, polyvinyl chloride pad, sample pad, and nitrocellulose membrane. Compared with traditional quenchers such as gold nanoparticles (AuNPs) with single spectral-overlapped quenching ability, PDANs can quench the excitation light and emission light of three fluorescence donors (aggregation-induced emission fluorescent microsphere, AIEFM; fluorescent microsphere, FM; and quantum dot bead, QB). The fluorescence intensity changes (ΔF) are numerically larger for PDANs-LFIA (ΔFAIEFM = 2315, ΔFFM = 979, ΔFQB = 910) than those for AuNPs-LFIA (ΔFAIEFM = 1722, ΔFFM = 833, ΔFQB =;520). AIEFM-based PDANs-LFIA exhibits a large ΔF (2315) in response to the changes in the SMZ concentration, and produces a high signal-to-noise ratio. The limit of detection (LOD) and visual LOD of LFIA based on PDANs quenching AIEFM for the detection of SMZ in chicken are 0.043 and 0.5 ng/mL, respectively. The results confirm that the proposed method can be used for the detection of hazardous materials in practical applications.
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Affiliation(s)
- Zexiang Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Keyu Xing
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Nengshui Ding
- State Key Laboratory of Food Safety Technology for Meat Products, Xiamen 361116, China; State Key Lab Pig Genet Improvement & Prod Techno, Jiangxi Agricultural University, Nanchang 330045, China
| | - Suhua Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Ganggang Zhang
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, China.
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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Fang B, Peng J, Zhang G, Xing K, Chen W, Liu D, Shan S, Xiong Y, Lai W. I 2/I --mediated fluorescence quenching of an Ag +-doped gold nanocluster-based immunoassay for sensitive detection of Escherichia coli O157:H7 in milk. J Dairy Sci 2022; 105:2922-2930. [PMID: 35086713 DOI: 10.3168/jds.2021-21281] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 09/13/2021] [Accepted: 11/29/2021] [Indexed: 11/19/2022]
Abstract
Escherichia coli O157:H7 is a type of hazardous bacteria in the field of food safety. A sensitive and effective method is urgently needed to detect it, avoiding enormous harm for the human health. In this study, we synthesized stable Ag+-doped gold nanoclusters (Ag-AuNC) with a fluorescence intensity 4.8 times stronger than that of AuNC. It was further demonstrated that Ag0 existing in the AuNC core and a fraction of Ag+ anchored on the AuNC shell eliminated the surface defects and improved the luminescent properties of AuNC. A combination of I2 and I- was used to quench fluorescence-enhanced Ag-AuNC, which was first applied in ELISA for detecting E. coli O157:H7 to improve the sensitivity. In the presence of E. coli O157:H7, the biotinylated anti-E. coli O157:H7 mAb and streptavidin-alkaline phosphatase would be immobilized and catalyze l-ascorbic acid 2-phosphate sesquimagnesium salt hydrate to produce ascorbic acid. After addition of KIO3, I2/I- were generated. The I2 could trigger oxidative etching of Ag-AuNC and I- could combine with Ag+ to decrease the Ag+ concentration of Ag-AuNC, which resulted in fluorescence quenching of Ag-AuNC. Under optimal conditions, the linear range of I2/I--mediated fluorescence quenching of Ag-AuNC-based immunoassay for detecting E. coli O157:H7 was 3.3 × 103 to 106 cfu/mL, with a detection limit of 9.2 × 102 cfu/mL, 10.7-fold lower than that of the traditional ELISA. The proposed immunoassay exhibits excellent sensitivity, specificity, recovery, and accuracy, which is useful for quantitative detection of E. coli O157:H7 in food safety.
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Affiliation(s)
- Bolong Fang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Juan Peng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Gan Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Keyu Xing
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Wenyao Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Daofeng Liu
- Jiangxi Province Center for Disease Control and Prevention, Nanchang 330047, China
| | - Shan Shan
- College of Lifetime Sciences, Jiangxi Normal University, Nanchang 330022, China
| | - Yonghua Xiong
- Jiangxi-Ostasien Institut (OAI) Joint Research Institute, Nanchang University, Nanchang 330047, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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Bao H, Yuan M, Xiao C, Liu D, Lai W. Development of a signal-enhanced LFIA based on tyramine-induced AuNPs aggregation for sensitive detection of danofloxacin. Food Chem 2021; 375:131875. [PMID: 34959139 DOI: 10.1016/j.foodchem.2021.131875] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 12/02/2021] [Accepted: 12/14/2021] [Indexed: 12/16/2022]
Abstract
A signal-enhanced LFIA based on tyramine (TYR)-induced AuNPs aggregation has been developed for the sensitive detection of danofloxacin (DAN). In the model, the hydroxyl radical produced by HRP catalyzing H2O2 can trigger the TYR-AuNPs to aggregate on the T or C line for enhancing the detection signal. The linear range of TYR-AuNPs LFIA was 0.25-5 ng mL-1 with the limit of detection (LOD) of 0.032 ng mL-1, and the LOD was 8-fold lower than that of the traditional AuNPs LFIA (0.26 ng mL-1). The TYR-AuNPs LFIA could be used with the naked eyes to qualitatively detect DAN with a cut-off limit of 2.5 ng mL-1, which was 4-fold lower than that of the traditional AuNPs LFIA (10 ng mL-1). The recoveries of TYR-AuNPs LFIA were 86.04-105.14% and 92.41-110.19%, with the coefficient of variation of 1.71-2.05% and 4.42-5.89% in chicken and pork, respectively.
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Affiliation(s)
- Huanhuan Bao
- State Key Laboratory of Food Science and Technology, Nanchang University 235, East Nanjing Road, Nanchang 330047, China
| | - Meifang Yuan
- Jiangxi Institute for Food Control, Nanchang 330001, China
| | - Chengui Xiao
- Food Inspection and Quarantine Technology Center of Shenzhen Customs, Shenzhen Academy of Inspection and Quarantine, Shenzhen, Guangdong 518045, China
| | - Daofeng Liu
- Jiangxi Province Centre for Disease Control and Prevention, 555, East Beijing Road, Nanchang 330029, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University 235, East Nanjing Road, Nanchang 330047, China.
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Liu Z, Sun H, Lai W, Hu M, Zhang Y, Bai C, Liu J, Ren H, Li F, Yan S. Genome-wide re-sequencing reveals population structure and genetic diversity of Bohai Black cattle. Anim Genet 2021; 53:133-136. [PMID: 34783059 DOI: 10.1111/age.13155] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/01/2021] [Indexed: 11/29/2022]
Abstract
Bohai Black (BHB) cattle, one of eight representative indigenous breeds in China, is well known for its high resistance to disease, endurance under unfavorable feeding conditions and excellent meat quality. Over recent, the number of BHB cattle has decreased sharply. To investigate the population structure and genetic diversity of this breed, the whole-genome data of 35 individuals from a conservation farm were obtained using the Illumina 150 bp paired-end platform. The results of the genetic structure and diversity analyses showed that BHB cattle had mixed Bos taurus and Bos indicus ancestry, close phylogenic relationships with Jiaxian Red and Luxi cattle and abundant genetic diversity. The bulls tested here could be divided into six families. This study presents a comprehensive evaluation of the genetic structure and diversity of the BHB cattle, and lays the theoretical basis for conservation and utilization of the valuable germplasm resource.
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Affiliation(s)
- Z Liu
- College of Animal Science, Jilin University, Changchun, 130062, China
| | - H Sun
- College of Animal Science, Jilin University, Changchun, 130062, China
| | - W Lai
- College of Animal Science, Jilin University, Changchun, 130062, China
| | - M Hu
- College of Animal Science, Jilin University, Changchun, 130062, China
| | - Y Zhang
- College of Animal Science, Jilin University, Changchun, 130062, China
| | - C Bai
- College of Animal Science, Jilin University, Changchun, 130062, China
| | - J Liu
- Shandong Binzhou Animal Science & Veterinary Medicine Academy, Binzhou, 256600, China
| | - H Ren
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, Jilin University, Changchun, 130062, China
| | - F Li
- Shandong Binzhou Animal Science & Veterinary Medicine Academy, Binzhou, 256600, China
| | - S Yan
- College of Animal Science, Jilin University, Changchun, 130062, China
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Chen Y, Li X, Lai W, Zhu F, Tan X, Xian W, Kang P, Wang H. [RIP1/RIP3-MLKL signaling pathway correlates with occurrence, progression and prognosis of chronic heart failure]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:1534-1539. [PMID: 34755669 DOI: 10.12122/j.issn.1673-4254.2021.10.12] [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: 11/24/2022]
Abstract
OBJECTIVE To detect plasma levels of receptor-interacting protein kinase 1 (RIP1), RIP3 and mixed lineage kinase domain-like protein (MLKL) in patients with chronic heart failure and explore the expression pattern of programmed necrosis signaling pathway RIP1/RIP3-MLKL in the progression of heart failure. METHODS The patients with chronic heart failure (NYHA class Ⅱ-Ⅳ) admitted in our hospital between February, 2020 and March, 2021 were prospectively enrolled in this study, with 21 healthy volunteers as the control group. The enrolled patients included 20 with grade Ⅱ, 33 with grade Ⅲ, and 43 with grade Ⅳ cardiac function. Fasting venous blood was collected from all the participants for detecting plasma levels of RIP1, RIP3, and MLKL and protein expressions of RIP1/RIP3-MLKL pathway using enzyme-linked immunosorbent assay (ELISA) and Western blotting. The patients with grade Ⅳ cardiac function were followed up for 5 months to evaluate the clinical prognostic indicators. RESULTS Compared with the healthy volunteers, the patients with grade Ⅱ, Ⅲ and Ⅳ cardiac function had significantly increased plasma levels of RIP1, RIP3, and MLKL (P < 0.01), and their levels were significantly higher in grade Ⅲ/Ⅳ patients than in those with grade Ⅱ cardiac function (P < 0.01); the plasma levels of RIP1 and MLKL were significantly higher in grade Ⅳ patients than in grade Ⅲ patients (P < 0.05). The results of Western blotting also showed increased expressions of the proteins in the RIP1/RIP3-MLKL pathway in patients with heart failure. Pearson correlation analysis suggested that in patients with heart failure, the expression levels of RIP1, RIP3, and MLKL were positively correlated with SCR, AST, LVEDD and NT-proBNP (P < 0.05). Follow-up study of the patients with grade Ⅳ cardiac function showed that higher expression levels of RIP1/RIP3-MLKL were associated with a poorer prognosis of the patients. CONCLUSION The expressions of RIP1, RIP3 and MLKL are significantly upregulated in patients with heart failure in positive correlation with the severity of the disease condition, and the activation of the RIP1/RIP3-MLKL signaling pathway may contribute to the occurrence, development and prognosis of chronic heart failure.
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Affiliation(s)
- Y Chen
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China.,Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical College, Bengbu 233000, China
| | - X Li
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China.,Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical College, Bengbu 233000, China
| | - W Lai
- Class 1, Grade 2017, School of Medical Imaging, Bengbu Medical College, Bengbu 233000, China
| | - F Zhu
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China
| | - X Tan
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China.,Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical College, Bengbu 233000, China
| | - W Xian
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China.,Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical College, Bengbu 233000, China
| | - P Kang
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China
| | - H Wang
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China
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