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Wu QL, Fang XT, Wan XX, Ding QY, Zhang YJ, Ji L, Lou YL, Li X. Fusobacterium nucleatum-induced imbalance in microbiome-derived butyric acid levels promotes the occurrence and development of colorectal cancer. World J Gastroenterol 2024; 30:2018-2037. [PMID: 38681125 PMCID: PMC11045493 DOI: 10.3748/wjg.v30.i14.2018] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/11/2024] [Accepted: 02/29/2024] [Indexed: 04/12/2024] Open
Abstract
BACKGROUND Colorectal cancer (CRC) ranks among the most prevalent malignant tumors globally. Recent reports suggest that Fusobacterium nucleatum (F. nucleatum) contributes to the initiation, progression, and prognosis of CRC. Butyrate, a short-chain fatty acid derived from the bacterial fermentation of soluble dietary fiber, is known to inhibit various cancers. This study is designed to explore whether F. nucleatum influences the onset and progression of CRC by impacting the intestinal metabolite butyric acid. AIM To investigate the mechanism by which F. nucleatum affects CRC occurrence and development. METHODS Alterations in the gut microbiota of BALB/c mice were observed following the oral administration of F. nucleatum. Additionally, DLD-1 and HCT116 cell lines were exposed to sodium butyrate (NaB) and F. nucleatum in vitro to examine the effects on proliferative proteins and mitochondrial function. RESULTS Our research indicates that the prevalence of F. nucleatum in fecal samples from CRC patients is significantly greater than in healthy counterparts, while the prevalence of butyrate-producing bacteria is notably lower. In mice colonized with F. nucleatum, the population of butyrate-producing bacteria decreased, resulting in altered levels of butyric acid, a key intestinal metabolite of butyrate. Exposure to NaB can impair mitochondrial morphology and diminish mitochondrial membrane potential in DLD-1 and HCT116 CRC cells. Consequently, this leads to modulated production of adenosine triphosphate and reactive oxygen species, thereby inhibiting cancer cell proliferation. Additionally, NaB triggers the adenosine monophosphate-activated protein kinase (AMPK) signaling pathway, blocks the cell cycle in HCT116 and DLD-1 cells, and curtails the proliferation of CRC cells. The combined presence of F. nucleatum and NaB attenuated the effects of the latter. By employing small interfering RNA to suppress AMPK, it was demonstrated that AMPK is essential for NaB's inhibition of CRC cell proliferation. CONCLUSION F. nucleatum can promote cancer progression through its inhibitory effect on butyric acid, via the AMPK signaling pathway.
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Affiliation(s)
- Qi-Long Wu
- School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Key Laboratory of Laboratory Medicine, Ministry of Education, Wenzhou 325035, Zhejiang Province, China
| | - Xiao-Ting Fang
- Department of Health Inspection and Quarantine, School of Laboratory Medicine and Life Sciences, Wenzhou 325035, Zhejiang Province, China
| | - Xin-Xin Wan
- School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Medical Genetics, Ministry of Education, Wenzhou 325035, Zhejiang Province, China
| | - Qing-Yong Ding
- School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Medical Genetics, Ministry of Education, Wenzhou 325035, Zhejiang Province, China
| | - Yan-Jun Zhang
- School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Medical Genetics, Ministry of Education, Wenzhou 325035, Zhejiang Province, China
| | - Ling Ji
- Department of General Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, Zhejiang Province, China
| | - Yong-Liang Lou
- School of Laboratory Medicine and Life Sciences, Institute of One Health, Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Medical Genetics, Ministry of Education, Wenzhou 325035, Zhejiang Province, China
| | - Xiang Li
- Department of Health Inspection and Quarantine, School of Laboratory Medicine and Life Sciences, Institute of One Health, Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Medical Genetics, Ministry of Education, Wenzhou 325035, Zhejiang Province, China
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2
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Hu Y, Lou YL, Zhu SX, Zhang H, Huang T, Wu H, Xie LP. Pelvic floor ultrasound versus urodynamics in evaluating insensible urinary incontinence: A retrospective study. Prog Urol 2023:S1166-7087(23)00106-9. [PMID: 37271669 DOI: 10.1016/j.purol.2023.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 05/09/2023] [Accepted: 05/13/2023] [Indexed: 06/06/2023]
Abstract
OBJECTIVE Insensible Urinary Incontinence (IUI) is a situation when you complain of urinary incontinence but are unaware of how it occurred. Therefore, it is necessary to apply highly specific diagnostic methods to promote accuracy in the diagnosis of IUI, including pelvic floor ultrasound (PFU) and urodynamic studies (UDS). METHODS A total of 41 women with IUI were retrospectively included. Patients were categorized into two groups: the urodynamic urinary incontinence group (UUI group, n=20) and the non-urodynamic urinary incontinence group (NUUI group, n=21), according to the urine leakage during UDS. The baseline clinical characteristics, UDS results, and PFU parameters were collected. RESULTS Compared with the NUUI group, the UUI group had a smaller maximum cystometric capacity (P=0.008), lower maximum urethral closure pressure (P=0.005), shorter functional urethral length (FUL) (P=0.01), more bladder neck funneling (BNF) (P=0.02), greater BNF depth (P=0.04), and larger BNF area (P=0.01). The area and depth of BNF were negatively correlated with maximum urethral closure pressure (r=-0.42, P=0.01), FUL (r=-0.36, P=0.02 versus r=-0.39, P=0.01), and maximum cystometric capacity (r=-0.35, P=0.03), but positively correlated with maximum urinary flow rate (r=0.33, P=0.04 versus r=0.36, P=0.02). The canonical correlation analysis of the ultrasound parameters and UDS parameters shows that the first pair of canonical variables was statistically significant (r1=0.9, P<0.001). CONCLUSIONS The PFU is associated with UDS in evaluating IUI. It has the advantages of low cost and high comfort, thus should be used as an auxiliary examination for IUI.
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Affiliation(s)
- Y Hu
- Department of Urology, Zhejiang University School of Medicine, Affiliated Jinhua Hospital, 321000 Jinhua, China
| | - Y L Lou
- Department of Ultrasonography, Zhejiang University School of Medicine, Affiliated Jinhua Hospital, 321000 Jinhua, China
| | - S X Zhu
- Shaoxing University Medical College, 312000 Shaoxing, China
| | - H Zhang
- Department of Urology, Zhejiang University School of Medicine, Affiliated Jinhua Hospital, 321000 Jinhua, China
| | - T Huang
- Department of Urology, Zhejiang University School of Medicine, Affiliated Jinhua Hospital, 321000 Jinhua, China
| | - H Wu
- Department of Urology, Zhejiang University School of Medicine, Affiliated Jinhua Hospital, 321000 Jinhua, China
| | - L P Xie
- Department of Urology, Zhejiang University School of Medicine, The First Affiliated Hospital, 310000 Hangzhou, China.
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3
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Zheng L, Shen Y, Dong W, Zheng C, Zhou R, Lou YL. Rapid Detection and Antimicrobial Susceptibility Testing of Pathogens Using AgNPs-Invertase Complexes and the Personal Glucose Meter. Front Bioeng Biotechnol 2022; 9:795415. [PMID: 35118055 PMCID: PMC8804100 DOI: 10.3389/fbioe.2021.795415] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 12/16/2021] [Indexed: 11/13/2022] Open
Abstract
Rapid detection of pathogens and assessment of antimicrobial susceptibility is of great importance for public health, especially in resource-limiting regions. Herein, we developed a rapid, portable, and universal detection method for bacteria using AgNPs-invertase complexes and the personal glucose meter (PGM). In the presence of bacteria, the invertase could be released from AgNPs-invertase complexes where its enzyme activity of invertase was inhibited. Then, the enzyme activity of invertase was restored and could convert sucrose into glucose measured by a commercially PGM. There was a good linear relationship between PGM signal and concentration of E. coli or S. aureus as the bacteria model with high sensitivity. And our proposed biosensor was proved to be a rapid and reliable method for antimicrobial susceptibility testing within 4 h with consistent results of Minimum Inhibitory Concentrations (MICs) testing, providing a portable and convenient method to treat infected patients with correct antibiotics and reduce the production of antibiotic-resistant bacteria, especially for resource-limiting settings.
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Affiliation(s)
- Laibao Zheng
- *Correspondence: Yong-Liang Lou, ; Laibao Zheng,
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4
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Huang XH, Ma Y, Lou H, Chen N, Zhang T, Wu LY, Chen YJ, Zheng MM, Lou YL, Xie DL. The Role of TSC1 in the Macrophages Against Vibrio vulnificus Infection. Front Cell Infect Microbiol 2021; 10:596609. [PMID: 33585271 PMCID: PMC7873526 DOI: 10.3389/fcimb.2020.596609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 12/08/2020] [Indexed: 12/19/2022] Open
Abstract
Vibrio vulnificus (V. vulnificus) is an estuarine bacterium that is capable of causing rapidly fatal infection in humans. Proper polarization and bactericidal activity of macrophages play essential roles in defending against invading pathogens. How macrophages limit V. vulnificus infection remains not well understood. Here we report that tuberous sclerosis complex 1 (TSC1) is crucial for the regulation of V. vulnificus-induced macrophage polarization, bacterial clearance, and cell death. Mice with myeloid-specific deletion of TSC1 exhibit a significant reduction of survival time after V. vulnificus infection. V. vulnificus infection induces both M1 and M2 polarization. However, TSC1 deficient macrophages show enhanced M1 response to V. vulnificus infection. Interestedly, the absence of TSC1 in myeloid cells results in impaired bacterial clearance both in vivo and in vitro after V. vulnificus infection. Inhibition of the mammalian target of rapamycin (mTOR) activity significantly reverses V. vulnificus-induced hypersensitive M1 response and resistant bactericidal activity both in wild-type and TSC1-deficient macrophages. Moreover, V. vulnificus infection causes cell death of macrophages, possibly contributes to defective of bacterial clearance, which also exhibits in a mTORC1-dependent manner. These findings highlight an essential role for the TSC1-mTOR signaling in the regulation of innate immunity against V. vulnificus infection.
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Affiliation(s)
- Xian-Hui Huang
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China.,Department of Infection and Immunity, Wenzhou Key Laboratory of Sanitary Microbiology, Wenzhou, China
| | - Yao Ma
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China.,Department of Laboratory Medicine, Dong Yang People's Hospital, Jinhua, China
| | - Han Lou
- Department of Pathology, School of Basic Medical Science, Wenzhou Medical University, Wenzhou, China
| | - Na Chen
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Ting Zhang
- Department of Laboratory Medicine, Jinshan Hospital of Fudan University, Shanghai, China
| | - Liu-Ying Wu
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Yi-Ju Chen
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Meng-Meng Zheng
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Yong-Liang Lou
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China.,Department of Infection and Immunity, Wenzhou Key Laboratory of Sanitary Microbiology, Wenzhou, China
| | - Dan-Li Xie
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China.,Department of Infection and Immunity, Wenzhou Key Laboratory of Sanitary Microbiology, Wenzhou, China
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5
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Huang XH, Ma Y, Zheng MM, Chen N, Hu MN, Wu LY, Zheng Y, Lou YL, Xie DL. NLRP3 and mTOR Reciprocally Regulate Macrophage Phagolysosome Formation and Acidification Against Vibrio vulnificus Infection. Front Cell Dev Biol 2020; 8:587961. [PMID: 33117816 PMCID: PMC7578225 DOI: 10.3389/fcell.2020.587961] [Citation(s) in RCA: 8] [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: 07/27/2020] [Accepted: 09/07/2020] [Indexed: 12/19/2022] Open
Abstract
The marine bacterium Vibrio vulnificus causes potentially fatal bloodstream infections, typically in patients with chronic liver diseases. The inflammatory response and anti-bacterial function of phagocytes are crucial for limiting bacterial infection in the human hosts. How V. vulnificus affects macrophages after phagocytosis is unclear. In this report, we found that the bactericidal activity of macrophages to internalize V. vulnificus was dependent on mammalian target of rapamycin (mTOR) and NOD-like receptor (NLR) family pyrin domain containing 3 (NLRP3) interaction. Additionally, the NLRP3 expression was dependent on mTORC1 activation. Inhibited mTORC1 or absence of NLRP3 in macrophages impaired V. vulnificus-induced phagosome acidification and phagolysosome formation, leading to a reduction of intracellular bacterial clearance. mTORC1 signaling overactivation could increase NLRP3 expression and restore insufficient phagosome acidification. Together, these findings indicate that the intracellular bactericidal activity of macrophages responding to V. vulnificus infection is tightly controlled by the crosstalk of NLRP3 and mTOR and provide critical insight into the host bactericidal activity basis of clearance of V. vulnificus through lyso/phagosome.
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Affiliation(s)
- Xian-Hui Huang
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China.,Wenzhou Key Laboratory of Sanitary Microbiology, Wenzhou, China
| | - Yao Ma
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Meng-Meng Zheng
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Na Chen
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Mei-Na Hu
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Liu-Ying Wu
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Yi Zheng
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China.,Wenzhou Key Laboratory of Sanitary Microbiology, Wenzhou, China
| | - Yong-Liang Lou
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China.,Wenzhou Key Laboratory of Sanitary Microbiology, Wenzhou, China
| | - Dan-Li Xie
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China.,Wenzhou Key Laboratory of Sanitary Microbiology, Wenzhou, China
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6
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Yan YH, Li MC, Liu HC, Xiao TY, Li N, Lou YL, Wan KL. [Cellular immunity evaluation of five mycobacterium tuberculosis recombinant proteins and their compositions]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:539-545. [PMID: 32388956 DOI: 10.3760/cma.j.cn112150-20191119-00872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: The cellular immunity of 5 Mycobacterium tuberculosis recombinant proteins and their compositions was evaluated. Method: A total of 88 fresh venous blood from peripheral heparin anticoagulant population, 42 of which were from tuberculosis patients treated by The Tuberculosis Prevention and Treatment Center of Changping District, Beijing, and 46 of healthy volunteers were provided by the Infection Diseases of Chinese Center for Disease Control and Prevention. Healthy volunteers without a history of tuberculosis exposure and any clinical signs and symptoms. Using the Mycobacterium tuberculosis standard strain H37Rv DNA as a template, complete genes of the selected 5 recombinant proteins Rv3874, Rv3875, Rv2031c, Rv1411c and Rv3418c by PCR amplified; 5 recombinant proteins were cloned, expressed and purified as stimulants by genetic recombination and protein purification techniques, and the effector T cell enzyme-linked immunospot assay (ELISPOT) was used to detect cellular immunity in the population. Results: The recombinant proteins Rv3874, Rv3875, Rv2031c, Rv1411c and Rv3418c were successfully cloned, expressed and purified; And the sensitivities were 50.00%, 71.43%, 69.04%, 73.81% and 76.19%, and the specificities were 86.96%, 76.09%, 71.74%, 39.13% and 36.96%. In addition, the positive predictive value, negative predictive value, area under the curve and Youden index were 52.46% to 77.78%, 62.96% to 74.47%, 0.511 to 0.754 and 0.129 to 0.475, respectively. Except for Rv1411c and Rv3418c, the number of spot-forming cell (SFC) detected by Rv3874, Rv3875 and Rv2031c in tuberculosis patients was higher than healthy volunteers, and the differences were statistically significant (P<0.001). Among the 26 compositions composed of 5 recombinant proteins, the sensitivity was 80.95% to 95.24%, and the specificity was 68.89% to 24.44%. As the number of recombinant proteins in the composition increases, the sensitivity gradually increased, but the specificity decreased. Conclusion: The recombinant proteins of Mycobacterium tuberculosis Rv3874, Rv3875 and Rv2031c have strong ability to stimulate T cells to produce immune response, and have certain antigenicity. The efficacy of Rv1411c and Rv3418c alone as diagnostic antigens is not ideal, and the composition composed of multi-component antigens has certain application value. This article provides experimental evidence for the immune diagnosis of tuberculosis and the preparation of new anti-tuberculosis vaccines.
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Affiliation(s)
- Y H Yan
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - M C Li
- State Key Laboratory for Infection Diseases Prevention and Control/National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H C Liu
- State Key Laboratory for Infection Diseases Prevention and Control/National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - T Y Xiao
- Guangdong Key Lab for Diagnosis & Treatment of Emerging Infectious Diseases, Shenzhen Third People's Hospital, Southern University of Science and Technology, Guangzhou 518112, China
| | - N Li
- State Key Laboratory for Infection Diseases Prevention and Control/National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y L Lou
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - K L Wan
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
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Luo Q, Li SJ, Xiao TY, Li MC, Liu HC, Lou YL, Wan KL. [Cloning expression and serological evaluation on Mycobacterium tuberculosis four new antigens]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:514-518. [PMID: 29699049 DOI: 10.3760/cma.j.issn.0254-6450.2018.04.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the serological diagnostic value of Mycobacterium (M.) tuberculosis four new antigens Rv0432, Rv0674, Rv1566c and Rv1547. Methods:Rv0432, Rv0674, Rv1566c and Rv1547 were amplified from M. tuberculosis strain H37Rv genomic DNA by using PCR, among which Rv1547 was divided into two segments for amplification (Rv1547-1 and Rv1547-2). The segments were cloned into expression vector PET-32a while the recombinant proteins were purified by affinity chromatography. Serums were incubated with BL21 (DE3) proteins. Antibodies IgG against M. tuberculosis were tested with 151 serum samples (41 healthy people and 110 TB patients) by using ELISA. The diagnostic efficiency of antigens was analyzed by means of receiver operating characteristic curve. Difference of the objective proteins in TB patients and healthy controls was compared by t-test. Results: Recombinant antigens Rv0432, Rv0674, Rv1566c, Rv1547-1 and Rv1547-2 were successfully expressed and purified. Results from ELISA showed that the sensitivity, specificity, positive predictive value, negative predictive value, Youden index and area under the curve of Rv0432, Rv0674, Rv1566c, Rv1547-1 and Rv1547-2, as 43.64%-92.73%, 80.49%-92.68%, 0.92-0.94, 0.38-0.80, 0.363-0.732 and 0.649-0.915. All the objective proteins showed significantly higher antibody levels in TB patients, when compared to the healthy controls (P<0.000 1). Conclusion: The newly identified antigens Rv0432, Rv0674, Rv1566c, Rv1547-1 and Rv1547-2 all performed well when being used for TB serological diagnosis, thus were expected to be new candidate antigens used for TB diagnosis.
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Affiliation(s)
- Q Luo
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - S J Li
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - T Y Xiao
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - M C Li
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H C Liu
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y L Lou
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - K L Wan
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China; State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Guo JC, Zheng Y, Chen HT, Zhou H, Huang XH, Zhong LP, Zhou HB, Huang Y, Xie DL, Lou YL. Efficacy and safety of thrombopoietin receptor agonists in children with chronic immune thrombocytopenia: a meta-analysis. Oncotarget 2017; 9:7112-7125. [PMID: 29467954 PMCID: PMC5805540 DOI: 10.18632/oncotarget.23487] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 11/15/2017] [Indexed: 01/19/2023] Open
Abstract
Background and Aim Thrombopoietin receptor agonists (TPO-RAs) have been shown to be safe and effective for adults with chronic immune thrombocytopenia (ITP). The aim of this meta-analysis is to assess the efficacy and safety of thrombopoietin receptor agonists for children with chronic ITP. Materials and Methods Clinical randomized controlled trials (RCTs) evaluating the efficacy and safety of TPO-RAs in pediatric ITP patients published up to June 2017 were retrieved from PubMed, Cochrane Library, and Embase databases. Relevant data were extracted, and the Physiotherapy Evidence Database scale was used to assess the methodological quality. Stata/SE 12.0 was used to perform a meta-analysis. Results Seven RCTs were included, with 238 patients and 107 patients in the TPO-RA group and the control group, respectively. Assessing efficacy, better results were found in the TPO-RA group for the rate of overall platelet response, durable response, and rescue medication needed. Furthermore, the TPO-RA group yielded superior results in the incidence of clinically significant bleeding events but had a comparable result in the incidence of any bleeding events and severe bleeding events. No significant difference was found between the two groups in health-related quality of life and parental burden. Assessing safety, no significant difference was found between the two groups in the incidence of any adverse events and severe adverse events. Conclusions TPO-RAs are effective and safe agents for the treatment of chronic ITP in pediatric patients. Eltrombopag appears to be better than romiplostim in terms of the rate of rescue medication needed and clinically significant bleeding events.
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Affiliation(s)
- Jian-Chun Guo
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.,China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang 325035, China
| | - Yi Zheng
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.,China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang 325035, China
| | - Hai-Tao Chen
- Department of Orthopaedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Haixia Zhou
- Department of Hematology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Xian-Hui Huang
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.,China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang 325035, China
| | - Li-Ping Zhong
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.,China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang 325035, China
| | - Huai-Bin Zhou
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.,China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang 325035, China
| | - Yu Huang
- Department of Infectious Diseases, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Key Laboratory of Hepatology, Hepatology Institute of Wenzhou Medical University, Wenzhou, Zhejiang 325025, China
| | - Dan-Li Xie
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.,China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang 325035, China
| | - Yong-Liang Lou
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.,China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang 325035, China
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Ji L, Lou YL, Wu ZX, Jiang JQ, Fan XL, Wang LF, Liu XX, Du P, Yan J, Sun AH. Usefulness of interferon-γ release assay for the diagnosis of sputum smear-negative pulmonary and extra-pulmonary TB in Zhejiang Province, China. Infect Dis Poverty 2017; 6:121. [PMID: 28859694 PMCID: PMC5579952 DOI: 10.1186/s40249-017-0331-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 10/09/2016] [Accepted: 07/04/2017] [Indexed: 01/08/2023] Open
Abstract
Background Quick diagnosis of smear-negative pulmonary tuberculosis (TB) and extra-pulmonary TB are urgently needed in clinical diagnosis. Our research aims to investigate the usefulness of the interferon-γ release assay (IGRA) for the diagnosis of smear-negative pulmonary and extra-pulmonary TB. Methods We performed TB antibody and TB-IGRA tests on 389 pulmonary TB patients (including 120 smear-positive pulmonary TB patients and 269 smear-negative pulmonary TB patients), 113 extra-pulmonary TB patients, 81 patients with other pulmonary diseases and 100 healthy controls. Blood samples for the TB-Ab test and the TB-IGRA were collected, processed, and interpreted according to the manufacturer’s protocol. Results The detection ratio of smear-positive pulmonary TB patients and smear-negative pulmonary TB patients were 90.8% (109 of 120) and 89.6% (241 of 269), respectively. There was no statistically significant difference of its performance between these two sample sets (P > 0.05). The detection ratio of positive TB patients and extra-pulmonary TB patients were 90.0% (350 of 389) and 87.6% (99 of 113), respectively, which was not significantly different (P > 0.05). Conclusions In this work, the total detection ratio using TB-IGRA was 89.4%, therefore TB-IGRA has diagnostic values in smear-negative pulmonary TB and extra-pulmonary TB diagnosis. Electronic supplementary material The online version of this article (doi:10.1186/s40249-017-0331-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lei Ji
- Department of Basic Medicine, Hangzhou Medical College, Hangzhou, 310053, Zhejiang, People's Republic of China
| | - Yong-Liang Lou
- School of Laboratory Medical Science and Life Science, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China
| | - Zhong-Xiu Wu
- Zhejiang Blood Center, Hangzhou, 310006, Zhejiang, People's Republic of China
| | - Jin-Qin Jiang
- Department of Basic Medicine, Hangzhou Medical College, Hangzhou, 310053, Zhejiang, People's Republic of China
| | - Xing-Li Fan
- Department of Basic Medicine, Hangzhou Medical College, Hangzhou, 310053, Zhejiang, People's Republic of China
| | - Li-Fang Wang
- Department of Basic Medicine, Hangzhou Medical College, Hangzhou, 310053, Zhejiang, People's Republic of China
| | - Xiao-Xiang Liu
- Department of Basic Medicine, Hangzhou Medical College, Hangzhou, 310053, Zhejiang, People's Republic of China
| | - Peng Du
- Department of Basic Medicine, Hangzhou Medical College, Hangzhou, 310053, Zhejiang, People's Republic of China
| | - Jie Yan
- Division of Basic Medical Microbiology, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital of Zhejiang University, Hangzhou, 310003, Zhejiang, People's Republic of China. .,Department of Medical Microbiology and Parasitology, College of Medicine, Zhejiang University, Hangzhou, 310058, Zhejiang, People's Republic of China.
| | - Ai-Hua Sun
- Department of Basic Medicine, Hangzhou Medical College, Hangzhou, 310053, Zhejiang, People's Republic of China. .,School of Laboratory Medical Science and Life Science, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China.
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10
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Xie DL, Zheng MM, Zheng Y, Gao H, Zhang J, Zhang T, Guo JC, Yang XF, Zhong XP, Lou YL. Vibrio vulnificus induces mTOR activation and inflammatory responses in macrophages. PLoS One 2017; 12:e0181454. [PMID: 28719654 PMCID: PMC5515453 DOI: 10.1371/journal.pone.0181454] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 07/01/2017] [Indexed: 12/18/2022] Open
Abstract
Vibrio vulnificus (V. vulnificus), a Gram-negative marine bacterium, can cause life-threatening primary septicemia, especially in patients with liver diseases. How V. vulnificus affects the liver and how it acts on macrophages are not well understood. In this report, we demonstrated that V. vulnificus infection causes a strong inflammatory response, marked expansion of liver-resident macrophages, and liver damage in mice. We demonstrated further that V. vulnificus activates mTOR in macrophages and inhibition of mTOR differentially regulates V. vulnificus induced inflammatory responses, suggesting the possibility of targeting mTOR as a strategy to modulate V. vulnificus induced inflammatory responses.
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Affiliation(s)
- Dan-Li Xie
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
- China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang, China
| | - Meng-Meng Zheng
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yi Zheng
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
- China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang, China
| | - Hui Gao
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jie Zhang
- Department of Clinical Laboratory Medicine, Sichuan Provincial People’s Hospital, Chengdu, Sichuan, China
| | - Ting Zhang
- Department of Laboratory Medicine, Jinshan Hospital of Fudan University, Jinshan, Shanghai, China
| | - Jian-Chun Guo
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - X. Frank Yang
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Xiao-Ping Zhong
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
- China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang, China
- Department of Pediatrics, Division of Allergy and Immunology, Duke University Medical Center, Durham, NC, United States of America
- * E-mail: (YLL); (XPZ)
| | - Yong-Liang Lou
- Department of Microbiology and Immunology, School of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
- China Ministry of Education Key Lab of Laboratory Medicine, Wenzhou, Zhejiang, China
- * E-mail: (YLL); (XPZ)
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11
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Li C, Li GL, Luo Q, Li SJ, Wang RB, Lou YL, Lyu JX, Wan KL. [A preliminary study on the molecular characteristics of D-cycloserine resistance of Mycobacterium tuberculosis]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 38:240-243. [PMID: 28231674 DOI: 10.3760/cma.j.issn.0254-6450.2017.02.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the relationship between D-cycloserine resistance and the gene mutations of alrA, ddlA and cycA of Mycobacterium (M.) tuberculosis, as well as the association between D-cycloserine resistance and spoligotyping genotyping. Methods: A total of 145 M. tuberculosis strains were selected from the strain bank. D-cycloserine resistant phenotypes of the strains were determined by the proportion method and the minimal inhibitory concentration was determined by resazurin microtiter assay. PCR amplification and DNA direct sequencing methods were used for the analysis of gene mutations. Relationship between the resistance phenotype and genotype was analyzed by chi-square test. Results: Of the 145 clinically collected strains, 24 (16.6%) of them were D-cycloserine resistant and 121 (83.4%) were sensitive. There were only synonymous mutations noticed on alrA, ddlA and cycA in sensitive strains. Of the 24 D-cycloserine resistant strains, 3 (12.5%) isolates' cycA and 1 (4.2%) isolates' alrA happened to be non-synonymous mutations, in which the codes were 188, 318 and 508 of cycA, and 261 of alrA, respectively. Results on drug sensitivity tests confirmed the minimal inhibitory concentration of the mutant strains were all increased to some degrees. The D-cycloserine resistant rates of 88 Beijing genotype and 57 non-Beijing genotype strains were 20.5% and 10.5% , respectively, but with no statistically significant difference (χ(2) =2.47, P>0.05). Conclusions: The non-synonymous mutations of alrA and cycA might contribute to one of the mechanisms of M. tuberculosis D-cycloserine resistance. M. tuberculosis Beijing genotype or non-Beijing genotype was not considered to be associated with the D-cycloserine resistance.
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Affiliation(s)
- C Li
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - G L Li
- Tuberculosis Branch, State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Q Luo
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - S J Li
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - R B Wang
- Tuberculosis Branch, State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y L Lou
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - J X Lyu
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - K L Wan
- Tuberculosis Branch, State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
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12
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Tong R, Zhou WM, Liu XJ, Wang Y, Lou YL, Tan WJ. [Detection of human parvovirus B19, human bocavirus and human parvovirus 4 infections in blood samples among 95 patients with liver disease in Nanjing by nested PCR]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 2013; 27:135-137. [PMID: 24044222] [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: 06/02/2023]
Abstract
OBJECTIVE To analyze the infection of human parvovirus B19, human bocavirus (HBoV) and human parvovirus 4 (PARV4) in blood samples among patients with liver disease in Nanjing by molecular detection. METHODS Nested PCR assays were designed and validated to detect B19, HBoV and PARV4, respectively. The assays were used to screen three parvoviruses in blood samples from 95 patients with different liver disease in Nanjing. The parvovirus infection was analyzed statistically. RESULTS The detection limits were 10 copies of genomic DNA equivalents per reaction for each assays and the good specificity were observed. The frequency of B19 and HBoV were 2/95 (2.1%) and 9/95 (9.5%) in blood samples respectively. No PARV4 was detected. HBoV was detected in 3/5 patients with drug-induced hepatitis. CONCLUSION Both B19 and HBoV infection were detected in blood from patients with liver disease.
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Affiliation(s)
- Rui Tong
- Institute of Medical Virology, Wenzhou Medical College, Wenzhou 325035, China
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13
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Wu ZH, Lou YL, Lu YY, Yan J. Development of quantitative real-time polymerase chain reaction for the detection of Vibrio vulnificus based on hemolysin (vvhA) coding system. Biomed Environ Sci 2008; 21:296-301. [PMID: 18837292 DOI: 10.1016/s0895-3988(08)60045-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVE To establish a TaqMan real-time fluorescent quantitative PCR to detect Vibrio vulnificus based on the hemolysin gene (vvhA) coding cytolysin. METHODS Primers and probes in the conserved region of the vvhA gene sequence were designed for the TaqMan real-time PCR to detect 100 bp amplicon from V. vulnificus DNA. Recombinant plasmid pMD19-vvhA100 was constructed and used as a positive control during the detection. Minimal amplification cycles (Ct value) and fluorescence intensity enhancement (DeltaRn value) were used as observing indexes to optimize the reaction conditions of TaqMan real-time PCR. The TaqMan assay for the detection of Vbirio vulnificus was evaluated in pure culture, mice tissue which artificially contaminated Vibrio vulnificus and clinical samples. RESULTS The established TaqMan real-time PCR showed positive results only for Vibrio vulnificus DNA and pMD19-vvhA100. The standard curve was plotted and the minimum level of the vvhA target from the recombinant plasmid DNA was 10(3) copies with a Ct value of 37.94+/-0.19, as the equivalent of 0.01 ng purified genomic DNA of Vibrio vulnificus. The results detected by TaqMan PCR were positive for the 16 clinical samples and all the specimens of peripheral blood and subcutaneous tissue of mice which were infected with Vibrio vulnificus. CONCLUSION TaqMan real-time PCR is a rapid, effective, and quantitative tool to detect Vibro vulnificus, and can be used in clinical laboratory diagnosis of septicemia and wound infection caused by Vibrio vulnificus.
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Affiliation(s)
- Zeng-Hui Wu
- Department of Medical Microbiology and Parasitology, College ofMedicine, Zhejiang University, Hangzhou 310058, Zhejiang, China.
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Chen JG, Lü JX, Lou YL, Peng Y, Chen XS, Lu YS. [Conserved region analysis of aac(3)-II gene from E. coli aminoglycoside resistance strain]. Yi Chuan 2004; 26:202-4. [PMID: 15639988] [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: 05/01/2023]
Abstract
According to standard K B method, bacteriostatic tests were performed to screen out aminoglycoside resistance bacteria from 47 strains of isolated E.coli. To analyze correlations between the degree of E.coli aminoglycoside resistance and aac(3)-II gene conserved region, PCR amplified aac(3)-II gene conserved regions and were analyzed by DNA sequencing. The results showed that there were two species of aac(3)-II gene type including 65G and 84T or 65A and 84C in the samples. Strains with high activity of modifying enzyme to gentamicin all were 65G and 84T aac(3)-II gene type.
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Affiliation(s)
- Jie-Gen Chen
- School of Clinical Laboratory Medicine and Public Health, Institute of Cellular and Molecular Medicine, Wenzhou Medical College, Wenzhou 325 027, China
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15
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Abstract
AIM: To determine the frequencies of HGV and TTV infections in serum and saliva samples of non-hepatitis patients with oral diseases in Hangzhou area, and to understand the correlation between detected results of HGV RNA and/or TTV DNA in sera and in saliva from the same patients.
METHODS: RT-nested PCR for HGV RNA detection and semi-nested PCR for TTV DNA detection were performed in the serum and saliva samples from 226 non-hepatitis patients with oral diseases, and nucleotide sequence analysis.
RESULTS: Twenty-seven (11.9%) and 21 (9.3%) of the 226 serum samples were only positive for HGV RNA and TTV DNA, respectively. 10 (4.4%) and 9 (3.9%) of the 226 saliva samples were only positive for HGV RNA and TTV DNA, respectively. And 7 (3.1%) of the serum samples and 2 (0.9%) of the saliva samples showed the positive amplification results for both HGV RNA and TTV DNA. 12 saliva samples from the 34 patients (35.3%) with HGV or HGV/TTV viremia and 11 saliva samples from the 28 patients (39.3%) with TTV or HGV/TTV viremia were HGV RNA detectable, respectively, including two patients positive for both HGV RNA and TTV DNA in serum and saliva samples. No saliva samples from the 226 patients were found to be HGV RNA or TTV DNA detectable while their serum samples were negative for HGV or TTV. Homologies of the nucleotide sequences of HGV and TTV amplification products from the serum and saliva samples of the two patients compared with the reported sequences were 88.65%-91.49% and 65.32%-66.67%, respectively. In comparison with the nucleotide sequences of amplification products between serum and from saliva sample from any one of the two patients, the homologies were 98.58% and 99.29% for HGV, and were 98.65% and 98.20% for TTV, respectively.
CONCLUSION: Relatively high carrying rates of HGV and/or TTV in the sera of non-hepatitis patients with oral diseases in Hangzhou area are demonstrated. Parts of the carriers are HGV and/or TTV positive in their saliva. The results of this study indicate that dentists may be one of the populations with high risk for HGV and/or TTV infection, and by way of saliva HGV and TTV may be transmitted among individuals.
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Affiliation(s)
- Jie Yan
- Department of Pathogenic Biology, College of Medical Science, Zhejiang University, Hangzhou 310031, Zhejiang Province, China.
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