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Chen XJ, Tong ZC, Kang X, Wang ZC, Huang GL, Yang TM, Dong L. ERCC polymorphisms and risk of osteosarcoma: a meta-analysis. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2018; 22:6658-6666. [PMID: 30402838 DOI: 10.26355/eurrev_201810_16142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The association between excision repair cross-complementation (ERCC) gene family (ERCC1 and ERCC2) and osteosarcoma risk was controversial. The aim of this study was to evaluate the association between ERCC1 or ERCC2 and osteosarcoma risk by systematic meta-analysis. MATERIALS AND METHODS Relative studies were retrieved from electronic databases without language restriction. The last search was updated on March 2017. Quality assessment was analyzed by the Newcastle-Ottawa Scale (NOS) score, which was recommended by the Agency for Healthcare Research and Quality (AHRQ). Meta-analysis was conducted by R language package (R 3.12). RESULTS This meta-analysis was performed based on 4 case-control studies that included 1208 cases and 2448 controls. The ERCC2-rs1799793 AA+AC > CC (OR=1.3428, 95% CI=1.0201; 1.7674) had an effect on the risk of osteosarcoma development, whereas, there were no significant associations among the other ERCC SNPs (ERCC1 rs3212986, ERCC1 rs11615, and ERCC2 rs13181) and osteosarcoma. CONCLUSIONS The ERCC2 rs1799793 polymorphism is related to the high risk of osteosarcoma development.
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Wu F, Gao G, Zhou C, Kang X, Zhou Y. A phase III, randomized, open-label, multicenter study of SHR-1210 (anti-PD-1 antibody) in combination with pemetrexed and carboplatin as first line therapy in subjects with advanced/metastatic non-squamous non-small cell lung cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Peng J, Niu H, Zhang H, Yao Y, Zhao X, Zhou X, Wan L, Kang X, Wu R. Highly Specific Enrichment of Multi-phosphopeptides by the Diphosphorylated Fructose-Modified Dual-Metal-Centered Zirconium-Organic Framework. ACS APPLIED MATERIALS & INTERFACES 2018; 10:32613-32621. [PMID: 30156824 DOI: 10.1021/acsami.8b11138] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Multisite phosphorylation of a protein, generally occurring in biological processes, plays important roles in the regulation of cellular functions. However, the identification of multi-phosphopeptides especially at low abundance is a big challenge as the extreme hydrophilicity and poor ionization efficiency of the multiphosphorylated peptides restrict the deep inspection of multisite phosphorylation processes. In this study, the highly specific enrichment of multiphosphorylated peptides was achieved via the modification of the dual-metal-centered zirconium-organic framework with the diphosphorylated fructose. The diphosphorylated fructose-modified dual-metal-centered zirconium-organic framework (DZMOF-FDP) demonstrated the highly specific affinity to the multiple phosphorylated peptides, with the density functional theory calculations explaining the plausible mechanism for multi-phosphopeptides on the DZMOF-FDP. The selective capture of multi-phosphopeptides from mimic samples confirmed the superior performance of the DZMOF-FDP, with comprehensive comparisons to other modification agents, such as orthophosphate and pyrophosphate. A number of 1871 multiphosphorylated peptides captured by DZMOF-FDP from tryptic digests of HeLa cell lysate could be identified, significantly higher than that by the pristine DZMOF. The deliberately designed modification with diphosphorylated fructose for the dual-zirconium-centered metal-organic framework materials suggests an efficient strategy to develop new enrichment methods in the selective capture of target analytes by judiciously optimizing specific modifiers for adsorbents.
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Zhao Y, Luo G, Wang X, Kang X, Cui D, Hou Z, Luo Y. DFT Studies on the Polymerization of Functionalized Styrenes Catalyzed by Rare-Earth-Metal Complexes: Factors Affecting C–H Activation Relevant to Step-Growth Polymerization. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00532] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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105
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Zhou G, Luo G, Kang X, Hou Z, Luo Y. Origin of Product Selectivity in Yttrium-Catalyzed Benzylic C–H Alkylations of Alkylpyridines with Olefins: A DFT Study. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00397] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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106
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Kang X, Dong L, Yang T, Wang Z, Huang G, Chen X. Clinical and radiographic outcomes of upper thoracic versus lower thoracic upper instrumented vertebrae for adult scoliosis: a meta-analysis. ACTA ACUST UNITED AC 2018; 51:e6651. [PMID: 29490003 PMCID: PMC5856438 DOI: 10.1590/1414-431x20176651] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Accepted: 11/20/2017] [Indexed: 12/02/2022]
Abstract
The aim of this study was to evaluate the clinical and radiographic outcomes of upper thoracic (UT) versus lower thoracic (LT) upper instrumented vertebrae (UIV) for adult scoliosis by meta-analysis. We conducted a literature search in three databases to retrieve related studies up to March 15, 2017. The preliminary screened studies were assessed by two reviewers according to the selection criteria. All analyses were carried out using the statistical software package R version 2.31. Odds ratios (OR) with 95% confidence intervals (CI) were used to describe the results. The I2 statistic and Q statistic test were used for heterogeneity assessment. Egger's test was performed to detect publication bias. To assess the effect of each study on the overall pooled OR or standardized mean difference (SMD), sensitive analysis was conducted. Ten trials published between 2007 and 2015 were eligible and included in our study. Meta-analysis revealed that the UT group was associated with more blood loss (SMD=0.4779, 95%CI=0.3349-0.6209, Z=6.55, P<0.0001) and longer operating time (SMD=0.5780, 95%CI=0.1971-0.958, Z=2.97, P=0.0029) than the LT group. However, there was no significant difference in Oswestry Disability Index, Scoliosis Research Society (SRS) function subscores, radiographic outcomes including sagittal vertical axis, lumbar lordosis, and thoracic kyphosis, length of hospital stay, and revision rates between the two groups. No evidence of publication bias was found between the two groups. Fusion from the lower thoracic spine (below T10) has as advantages a shorter operation time and less blood loss than upper thoracic spine (above T10) in posterior long-segment fixation for degenerative lumbar scoliosis.
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Zhou G, Kang X, Wang X, Hou Z, Luo Y. Theoretical Investigations of Isoprene Polymerization Catalyzed by Cationic Half-Sandwich Scandium Complexes Bearing a Coordinative Side Arm. Organometallics 2018. [DOI: 10.1021/acs.organomet.7b00876] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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108
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Yu Y, Yu H, Kang X, Wang X, Yang J, Qu J, Luo Y. H–H and N–H Bond Cleavages of Dihydrogen and Ammonia by a Bifunctional Imido (NH)-Bridged Diiridium Complex: A DFT Study. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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109
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Kang X, Song X. P1.07-029 Correlation Study Between Plasma sPD-L1 and the Efficacy and Prognosis of Patients with Non-Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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110
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Kang X, Dong C, Xu G, Yin H, Chen K, Zeng H. P3.05-003 Serum Thioredoxin Reductase 1 as a Diagnostic Biomarker for Non-Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kang X, Zhou H, Xuan T, Yan W, Gong Y, Dai L, Guan Y, Yang Y, Yang H, Fu H, Fan M, Lin Y, Liang Z, Xiong H, Yang L, Yi X, Chen K. P3.16-053 Genomic Challenges for Lung Cancers with Multiple Pulmonary Sites of Involvement. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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112
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Ying Z, Xiang X, Song Y, Ding N, Lin Y, Zheng W, Wang X, Lin N, Tu M, Xie Y, Zhang C, Liu W, Deng L, Liu Y, Yue Y, Yu X, Liu H, Duan P, Chen F, Wu X, Huang X, Jones L, Kang X, Chen S, Zhu J. A PHASE I STUDY OF CHIMERIC ANTIGEN RECEPTORMODIFIED T CELLS DIRECTED AGAINST CD19 IN PATIENTS WITH RELAPSED OR REFRACTORYCD19(+) B CELL LYMPHOMAS: INTERIM ANALYSIS. Hematol Oncol 2017. [DOI: 10.1002/hon.2438_131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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113
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Kang X, Dong C, Shen BC, Dai L, Yan WP, Yang YB, Yin H, Xu G, Zeng H, Chen KN. 124 Plasma thioredoxin reductase 1 as a diagnostic marker for non-small cell lung cancer. Chest 2017. [DOI: 10.1016/j.chest.2017.04.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Hu X, Kang X, Zhou G, Wang X, Hou Z, Luo Y. DFT Studies on Isoprene/Ethylene Copolymerization Catalyzed by Cationic Scandium Complexes Bearing Different Ancillary Ligands. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201600673] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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115
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Peng J, Zhang H, Li X, Liu S, Zhao X, Wu J, Kang X, Qin H, Pan Z, Wu R. Dual-Metal Centered Zirconium-Organic Framework: A Metal-Affinity Probe for Highly Specific Interaction with Phosphopeptides. ACS APPLIED MATERIALS & INTERFACES 2016; 8:35012-35020. [PMID: 27983800 DOI: 10.1021/acsami.6b12630] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The highly specific affinity between probes and phosphopeptides is the fundamental interaction for selective identification of phosphoproteomes that uncover the mechanisms of signal transduction, cell cycle, enzymatic regulation, and gene expression in biological systems. In this study, a metal-affinity probe possessing both interactions of metal oxide affinity chromatography (MOAC) and immobilized metal ion affinity chromatography (IMAC) was facilely prepared by immobilizing zirconium(IV) on a zirconium-organic framework of UiO-66-NH2, which holds dual-metal centers of not only the inherent Zr-O cluster but also the immobilized Zr(IV) center. This dual-metal centered zirconium-organic framework (DZMOF) demonstrates as a highly specific metal-affinity probe toward the extraction of phosphopeptides due to the metal-affinity interactions of MOAC and IMAC toward either mono-phosphorylated or multi-phosphorylated peptides. The binding energies of zirconium 3d5/2 and 3d3/2 in this DZMOF are 183.07 and 185.47 eV, respectively, which are higher than those of the intact UiO-66-NH2 (182.84 and 185.17 eV, respectively), confirming the higher metal-affinity interaction between the DZMOF and phosphopeptides. This high metal-affinity probe presents an unprecedented strong performance in anti-nonspecific interference during the capturing of phosphopeptides of β-casein with the molar ratio of β-casein vs bovine serum albumin up to ca. 1:5000. The enrichment of phosphopeptides from a human saliva sample by DZMOF further confirms the great potential of DZMOF in the extraction of low-abundance phosphopeptides for real complex biological samples.
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Wang R, Wang T, Lu W, Zhang W, Chen W, Kang X, Huang Y. Three indel variants in chicken LPIN1 exon 6/flanking region are associated with performance and carcass traits. Br Poult Sci 2016; 56:621-30. [PMID: 26523976 DOI: 10.1080/00071668.2015.1113502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
LPIN1 is a Mg(2+)-dependent phosphatidic acid phosphatase. Variation in chicken LPIN1 exon 6 and its flanking regions were identified and three indel variants in 6 breeds and their associations with performance traits were studied. Seven variants were detected from 6 breeds, which contained a synonymous tri-allelic variant (c.924A/T/C) and three indels. The exon 6 variants detected from chicken breeds were conserved among bird species. The indel variation frequency presented clear differences among breeds. Two coding indels (c.1014-1018del3 and c.1125-1138del12) were multiples of three nucleotides and maintained the open reading frames of LPIN1 proteins. However, they were predicted to result in the clear change of the RNA secondary structure of chicken LPIN1 exon 6 and LPIN1 protein conformation. The association analysis showed that c.871-15-22del6 variation had a significant effect on body weight at hatch (BW0) and 2 weeks (BW2); c. 1014-1018del3 variation had a significant effect on BW4, BW6, caecum length and gizzard weight (GW) traits; c.1125-1138del12 variation had a significant effect on BW12, shank length at 4 weeks (SL4), carcass weight, lactate dehydrogenase traits (LDH), glucose (GLU) and albumin (ALB) traits. The genotype combination for c.1014-1018del3 and c.1125-1138del12 also presented significant effects on SL4, SL8, GW, leg muscle weight, ALB, GLU and LDH. The study demonstrated that chicken LPIN1 has an important effect on body, carcass and organ weight, serum LDH, GLU and ALB level.
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Kang X, Luo G, Luo L, Hu S, Luo Y, Hou Z. Mechanistic Insights into Ring Cleavage and Contraction of Benzene over a Titanium Hydride Cluster. J Am Chem Soc 2016; 138:11550-9. [DOI: 10.1021/jacs.6b03545] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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118
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Liu Z, Chen G, Kang X, Han M, Chen R, Chen C, Wang H. A multiplex allele-specific real-time polymerase chain reaction assay for HLA-B*13:01 genotyping in four Chinese populations. HLA 2016; 88:164-71. [PMID: 27558172 DOI: 10.1111/tan.12863] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 07/10/2016] [Accepted: 08/02/2016] [Indexed: 11/26/2022]
Abstract
Human leukocyte antigen HLA-B*13:01 is identified currently as a marker of individual susceptibility to drug-induced hypersensitivity reaction, such as dapsone-induced hypersensitivity reactions (DIHRs) and trichloroethylene-induced dermatitis. Therefore, screening for the HLA-B*13:01 allele can assist clinics in identifying patients at risk of developing DIHRs. By combining the allele-specific primers with TaqMan probes, we established a single tube, triplex real-time PCR to detect HLA-B*13:01. The reliability of this assay was validated by the comparison of genotyping results with those by sequence-based typing (SBT). With this assay, the distribution of HLA-B*13:01 in a total of 350 blood samples from four ethnic groups: Han, Tibetan, Uighur, and Buyei were determined. A 100% concordance was observed between the results with the established real-time PCR and SBT in 100 samples. The detection limit of this assay was 0.016 ng genomic DNA. The prevalence of HLA-B*13:01 carriers were 11%, 8%, 1%, and 2% in the Buyei (n = 100), Northern Han (n = 100), Tibetan (n = 100), and Uighur (n = 50) populations, respectively. The multiplex real-time PCR assay provided a fast and reliable method for accurate detection of HLA-B*13:01 allele prior to dapsone administration in clinical practice and onset of the reaction after exposure to trichloroethylene.
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Kang X, Zhou G, Wang X, Qu J, Hou Z, Luo Y. Alkyl Effects on the Chain Initiation Efficiency of Olefin Polymerization by Cationic Half-Sandwich Scandium Catalysts: A DFT Study. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00081] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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120
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Kang X, Yamamoto A, Nishiura M, Luo Y, Hou Z. Computational Analyses of the Effect of Lewis Bases on Styrene Polymerization Catalyzed by Cationic Scandium Half-Sandwich Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00719] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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121
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Kang X, Børset M, Burheim O, Haarberg G, Xu Q, Kjelstrup S. Seebeck coefficients of cells with molten carbonates relevant for the metallurgical industry. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.09.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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122
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Wang B, Kang X, Nishiura M, Luo Y, Hou Z. Isolation, structure and reactivity of a scandium boryl oxycarbene complex. Chem Sci 2015; 7:803-809. [PMID: 28966773 PMCID: PMC5580044 DOI: 10.1039/c5sc03138a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 09/16/2015] [Indexed: 11/21/2022] Open
Abstract
A well-defined scandium boryl oxycarbene complex undergoes coupling with CO, C–H activation of lutidine, and cyclopropanation with ethylene.
The reaction of a half-sandwich scandium boryl complex 1 with CO (1 atm) afforded a novel boryl oxycarbene complex 2. The structure of 2 was characterized by 1H, 13C and 11B NMR, X-ray diffraction, and DFT analysis. Further reaction of 2 with CO (1 atm) yielded a phenylamido- and boryl-substituted enediolate complex 3 through C–C bond formation between CO and the carbene unit in 2 and cleavage and rearrangement of the Si–N bond in the silylene-linked Cp–amido ligand. Upon heating, insertion of the carbene atom into a methine C–H bond in the boryl ligand of 2 took place to give an alkoxide complex 4. The reactions of 2 with pyridine and 2-methylpyridine led to insertion of the carbene atom into an ortho-C–H bond of pyridine and into a methyl C–H bond of 2-methylpyridine, respectively. The reaction of 2 with ethylene yielded a borylcyclopropyloxy complex 7 through cycloaddition of the carbene atom to ethylene.
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Zhang R, Niu H, Kang X, Ban T, Hong H, Ai J. Long-Term Administration of Neuropeptide Y in the Subcutaneous Infusion Results in Cardiac Dysfunction and Hypertrophy in Rats. Cell Physiol Biochem 2015; 37:94-104. [PMID: 26303143 DOI: 10.1159/000430336] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/06/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS The purpose of the present study was to clarify whether chronically elevated plasma neuropeptide Y (NPY) might affect heart function and cardiac remodeling in rats. METHODS Male Wistar rats were administered NPY (85 μg for 30 days) by mini-osmotic pump subcutaneously implanted between the scapulae. Associated indices for heart function, cardiac remodeling and hypertrophy were evaluated. RESULTS Compared to the sham group, the baseline systolic blood pressure (SBP) in rats administered NPY was significantly increased; cardiac function was significantly decreased, as indicated by reduced ejection fraction (EF), left ventricular end-systolic pressure (LVESP), maximum change velocity of left ventricular pressure in the isovolumic contraction or relaxation period (± dp/dtmax) and increased left ventricular end-diastolic pressure (LVEDP); hematoxylin-eosin (H&E) staining detection displayed enlarged cell areas and a consistent increase in heart-to-body weight ratios (HW/BW) was observed; quantitative real time PCR (qRT-PCR) and Western blot analysis showed markedly increased expressions of β-myosin heavy chain (β-MHC), calcineurin (CaN) and phosphorylated p38 proteins, while no changes were found in the expressions of p38 total protein and the phosphorylations of JNK and ERK. CONCLUSION This study reported for the first time that long-term elevated plasma concentration of NPY could induce cardiac dysfunction and cardiac hypertrophy and this phenomenon could, in part, be mediated by the Ca2+/CaM-dependent CaN pathway and p38 mitogen-activated protein kinase (MAPK) signal pathway in rats.
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Kang X, Liu YW, Xu LQ, Ni DD, Yang K, Hiraoka N, Tsuei KD, Zhu LF. OSCILLATOR STRENGTH MEASUREMENT FOR THEA(0–6)–X(0),C(0)–X(0), ANDE(0)–X(0) TRANSITIONS OF CO BY THE DIPOLE (γ,γ) METHOD. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/0004-637x/807/1/96] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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125
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Liu J, Yan Q, Luo F, Shang D, Wu D, Zhang H, Shang X, Kang X, Abdo M, Liu B, Ma Y, Xin Y. Acute cholecystitis associated with infection of Enterobacteriaceae from gut microbiota. Clin Microbiol Infect 2015; 21:851.e1-9. [PMID: 26025761 DOI: 10.1016/j.cmi.2015.05.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 03/03/2015] [Accepted: 05/12/2015] [Indexed: 02/08/2023]
Abstract
Acute cholecystitis (AC) is one of the most common surgical diseases. Bacterial infection accounts for 50% to 85% of the disease's onset. Since there is a close relationship between the biliary system and the gut, the aims of this study were to characterize and determine the influence of gut microbiota on AC, to detect the pathogenic microorganism in the biliary system, and to explore the relationship between the gut and bile microbiota of patients with AC. A total of 185 713 high-quality sequence reads were generated from the faecal samples of 15 patients and 13 healthy controls by 16S rRNA gene pyrosequencing. Patients' samples were significantly enriched in Akkermansia, Enterobacter and Escherichia/Shigella group. The healthy controls, however, showed significant enrichment of Clostridiales, Coprococcus, Coprobacillaceae, Paraprevotella, Turicibacter and TM7-3 in their faecal samples. Escherichia coli was the main biliary pathogenic microorganism, among others such as Klebsiella spp., Clostridium perfringens, Citrobacter freundii and Enterobacter cloacae in the bile of the patients. Additionally, the amount of bile endotoxin significantly correlated with the number of Enterobacteriaceae, especially E. coli. Our data indicate that Enterobacteriaceae might play essential role in the pathogenesis and/or progress of AC. This was verified in an in vivo model using a pathogenic E. coli isolated from one of the patients in guinea pigs and observed marked gallbladder inflammation and morphologic changes. This study thus provides insight which could be useful for the prevention, diagnosis and treatment of AC and related diseases by controlling the growth of Enterobacteriaceae to alleviate the infection.
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