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Liu F, Wang ZK, Li MY, Zhang XL, Cai FC, Wang XD, Gao XF, Li W. Characterization of biliary and duodenal microbiota in patients with primary and recurrent choledocholithiasis. Health Inf Sci Syst 2024; 12:29. [PMID: 38584761 PMCID: PMC10994894 DOI: 10.1007/s13755-023-00267-2] [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: 04/24/2023] [Accepted: 12/27/2023] [Indexed: 04/09/2024] Open
Abstract
Purpose To explore the biliary and duodenal microbiota features associated with the formation and recurrence of choledocholithiasis (CDL). Methods We prospectively recruited patients with primary (P-CDL, n = 29) and recurrent CDL (R-CDL, n = 27) for endoscopic retrograde cholangiopancreatography (ERCP). Duodenal mucosa (DM), bile and bile duct stones (BDS) samples were collected in P- and R-CDL patients. DM samples were also collected in 8 healthy controls (HC). The microbiota profile analysis was performed with 16S rRNA gene sequencing. Results Short-course antibiotic application before ERCP showed no significant effects in alpha and beta diversities of the biliary and duodenal microbiota in CDL. Alpha diversity showed no difference between DM and bile samples in CDL. The duodenal microbial richness and diversity was lower in both P- and R-CDL than HC. The biliary microbiota composition showed a high similarity between P- and R-CDL. Fusobacterium and Enterococcus were higher abundant in DM, bile, and BDS samples of R-CDL than P-CDL, as well as Escherichia and Klebsiella in bile samples of R-CDL. The enriched duodenal and biliary bacteria in CDL were closely associated with cholecystectomy, inflammation and liver dysfunction. The bile-associated microbiota of R-CDL expressed enhanced capacity of D-glucuronide and D-glucuronate degradation, implicating an elevated level of β-glucuronidase probably produced by enriched Escherichia and Klebsiella in bile. Conclusions The duodenal microbiota was in an imbalance in CDL. The duodenal microbiota was probably the main source of the biliary microbiota and was closely related to CDL formation and recurrence. Enterococcus, Fusobacterium, Escherichia and Klebsiella might contribute to CDL recurrence. Clinical trials The study was registered at the Chinese Clinical Trial Registry (https://www.chictr.org.cn/index.html, ChiCTR2000033940). Supplementary Information The online version contains supplementary material available at 10.1007/s13755-023-00267-2.
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Affiliation(s)
- Fang Liu
- Medical School of Chinese PLA, Beijing, China
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, The First Medical Center, No. 28 Fuxing Road, Beijing, 100853 China
| | - Zi-Kai Wang
- Medical School of Chinese PLA, Beijing, China
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, The First Medical Center, No. 28 Fuxing Road, Beijing, 100853 China
| | - Ming-Yang Li
- Medical School of Chinese PLA, Beijing, China
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, The First Medical Center, No. 28 Fuxing Road, Beijing, 100853 China
| | - Xiu-li Zhang
- Medical School of Chinese PLA, Beijing, China
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, The First Medical Center, No. 28 Fuxing Road, Beijing, 100853 China
| | - Feng-Chun Cai
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, The First Medical Center, No. 28 Fuxing Road, Beijing, 100853 China
| | - Xiang-Dong Wang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, The First Medical Center, No. 28 Fuxing Road, Beijing, 100853 China
| | - Xue-Feng Gao
- Integrative Microecology Clinical Center, Shenzhen Key Laboratory of Gastrointestinal Microbiota and Disease, Shenzhen Clinical Research Center for Digestive Disease, Shenzhen Technology Research Center of Gut Microbiota Transplantation, The Clinical Innovation & Research Center, Shenzhen Hospital, Southern Medical University, Shenzhen, 518000 Guangdong China
| | - Wen Li
- Medical School of Chinese PLA, Beijing, China
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, The First Medical Center, No. 28 Fuxing Road, Beijing, 100853 China
- Minimally Invasive Digestive Disease Center, Beijing and Shenzhen United Family Hospital, Beijing, China
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Zhou GZ, Zeng JQ, Wang L, Liu M, Meng K, Wang ZK, Zhang XL, Peng LH, Yan B, Pan F. Clinical characteristics and outcome of autoimmune pancreatitis based on serum immunoglobulin G4 level: A single-center, retrospective cohort study. World J Gastroenterol 2023; 29:5125-5137. [PMID: 37744294 PMCID: PMC10514754 DOI: 10.3748/wjg.v29.i35.5125] [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: 05/22/2023] [Revised: 07/21/2023] [Accepted: 09/01/2023] [Indexed: 09/14/2023] Open
Abstract
BACKGROUND Autoimmune pancreatitis (AIP) has been linked with elevated immunoglobulin (Ig) G4 levels. The characteristics and outcomes of AIP based on serum markers have not been fully evaluated. AIM To compare clinical features, treatment efficacy, and outcome of AIP based on serum IgG4 levels and analyze predictors of relapse. METHODS A total of 213 patients with AIP were consecutively reviewed in our hospital from 2006 to 2021. According to the serum IgG4 level, all patients were divided into two groups, the abnormal group (n = 148) with a high level of IgG4 [> 2 × upper limit of normal (ULN)] and the normal group (n = 65). The t-test or Mann-Whitney U test was used to compare continuous variables. Categorical parameters were compared by the χ2 test or Fisher's exact test. Kaplan-Meier curves and log-rank tests were established to assess the cumulative relapse rates. Univariate and multivariate analyses were used to investigate potential risk factors of AIP relapse. RESULTS Compared with the normal group, the abnormal group had a higher average male age (60.3 ± 10.4 vs 56.5 ± 12.9 years, P = 0.047); higher level of serum total protein (72.5 ± 7.9 g/L vs 67.2 ± 7.5 g/L, P < 0.001), IgG4 (1420.5 ± 1110.9 mg/dL vs 252.7 ± 106.6 mg/dL, P < 0.001), and IgE (635.6 ± 958.1 IU/mL vs 231.7 ± 352.5 IU/mL, P = 0.002); and a lower level of serum complement C3 (100.6 ± 36.2 mg/dL vs 119.0 ± 45.7 mg/dL, P = 0.050). In addition, a lower number of cases with abnormal pancreatic duct and pancreatic atrophy (23.6% vs 37.9%, P = 0.045; 1.6% vs 8.6%, P = 0.020, respectively) and a higher rate of relapse (17.6% vs 6.2%, P = 0.030) were seen in the abnormal group. Multivariate analyses revealed that serum IgG4 [(> 2 × ULN), hazard ratio (HR): 3.583; 95% confidence interval (CI): 1.218-10.545; P = 0.020] and IgA (> 1 × ULN; HR: 5.908; 95%CI: 1.199-29.120; P = 0.029) and age > 55 years (HR: 2.383; 95%CI: 1.056-5.378; P = 0.036) were independent risk factors of relapse. CONCLUSION AIP patients with high IgG4 levels have clinical features including a more active immune system and higher relapse rate. Several factors, such as IgG4 and IgA, are associated with relapse.
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Affiliation(s)
- Guan-Zhou Zhou
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
- School of Medicine, Nankai University, Tianjin 300071, China
| | - Jia-Qi Zeng
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
- Chinese PLA Medical School, Beijing 100853, China
| | - Lei Wang
- Department of Rheumatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Miao Liu
- Department of Statistics and Epidemiology, Graduate School, Chinese PLA General Hospital, Beijing 100853, China
| | - Ke Meng
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Zi-Kai Wang
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Xiu-Li Zhang
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Li-Hua Peng
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Bin Yan
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Fei Pan
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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Wang ZK, Gong JS, Feng DT, Su C, Li H, Rao ZM, Lu ZM, Shi JS, Xu ZH. Geometric Remodeling of Nitrilase Active Pocket Based on ALF-Scanning Strategy To Enhance Aromatic Nitrile Substrate Preference and Catalytic Efficiency. Appl Environ Microbiol 2023; 89:e0022023. [PMID: 37191513 PMCID: PMC10304902 DOI: 10.1128/aem.00220-23] [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: 02/13/2023] [Accepted: 04/24/2023] [Indexed: 05/17/2023] Open
Abstract
Nitrilase can catalyze nitrile compounds to generate corresponding carboxylic acids. Nitrilases as promiscuous enzymes can catalyze a variety of nitrile substrates, such as aliphatic nitriles, aromatic nitriles, etc. However, researchers tend to prefer enzymes with high substrate specificity and high catalytic efficiency. In this study, we developed an active pocket remodeling (ALF-scanning) based on modulating the geometry of the nitrilase active pocket to alter substrate preference and improve catalytic efficiency. Using this strategy, combined with site-directed saturation mutagenesis, we successfully obtained 4 mutants with strong aromatic nitrile preference and high catalytic activity, W170G, V198L, M197F, and F202M, respectively. To explore the synergistic relationship of these 4 mutations, we constructed 6 double-combination mutants and 4 triple-combination mutants. By combining mutations, we obtained the synergistically enhanced mutant V198L/W170G, which has a significant preference for aromatic nitrile substrates. Compared with the wild type, its specific activities for 4 aromatic nitrile substrates are increased to 11.10-, 12.10-, 26.25-, and 2.55-fold, respectively. By mechanistic dissection, we found that V198L/W170G introduced a stronger substrate-residue π-alkyl interaction in the active pocket and obtained a larger substrate cavity (225.66 Å3 to 307.58 Å3), making aromatic nitrile substrates more accessible to be catalyzed by the active center. Finally, we conducted experiments to rationally design the substrate preference of 3 other nitrilases based on the substrate preference mechanism and also obtained the corresponding aromatic nitrile substrate preference mutants of these three nitrilases and these mutants with greatly improved catalytic efficiency. Notably, the substrate range of SmNit is widened. IMPORTANCE In this study, the active pocket was largely remodeled based on the ALF-scanning strategy we developed. It is believed that ALF-scanning not only could be employed for substrate preference modification but might also play a role in protein engineering of other enzymatic properties, such as substrate region selectivity and substrate spectrum. In addition, the mechanism of aromatic nitrile substrate adaptation we found is widely applicable to other nitrilases in nature. To a large extent, it could provide a theoretical basis for the rational design of other industrial enzymes.
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Affiliation(s)
- Zi-Kai Wang
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, People’s Republic of China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, People’s Republic of China
| | - Jin-Song Gong
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, People’s Republic of China
- Yixing Institute of Food and Biotechnology Co., Ltd., Yixing, People’s Republic of China
| | - Dan-Ting Feng
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, People’s Republic of China
| | - Chang Su
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, People’s Republic of China
- Yixing Institute of Food and Biotechnology Co., Ltd., Yixing, People’s Republic of China
| | - Hui Li
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, People’s Republic of China
| | - Zhi-Ming Rao
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, People’s Republic of China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, People’s Republic of China
| | - Zhen-Ming Lu
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, People’s Republic of China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, People’s Republic of China
| | - Jin-Song Shi
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, People’s Republic of China
- Yixing Institute of Food and Biotechnology Co., Ltd., Yixing, People’s Republic of China
| | - Zheng-Hong Xu
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, People’s Republic of China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, People’s Republic of China
- Yixing Institute of Food and Biotechnology Co., Ltd., Yixing, People’s Republic of China
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Zhang XM, Min HC, Chen J, Zhi JL, Dong HX, Kong JY, Meng JY, Sun G, Wang ZK, Pan F, Peng LH, Yang YS. [Efficacy of high-dose dual therapy for Helicobacter pylori infection eradication in servicemen: a randomized controlled trial]. Zhonghua Nei Ke Za Zhi 2023; 62:520-525. [PMID: 37096278 DOI: 10.3760/cma.j.cn112138-20220524-00401] [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] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
Objective: To assess the efficacy and cost-effectiveness of high-dose dual therapy compared with bismuth-containing quadruple therapy for treating Helicobacter pylori(H.pylori) infection in servicemen patients. Methods: A total of 160 H. pylori-infected, treatment-naive servicemen, including 74 men and 86 women, aged from 20 years to 74 years, with a mean (SD) age of 43 (13) years, tested in the First Center of Chinese PLA General Hospital from March 2022 to May 2022 were enrolled in this open-label, randomized controlled clinical trial. Patients were randomly allocated into 2 groups: the 14-day high-dose dual therapy group and the bismuth-containing quadruple therapy group. Eradication rates, adverse events, patient compliance, and drug costs were compared between the two groups. The t-test was used for continuous variables, and the Chi-square test for categorical variables. Results: No significant difference in H. pylori eradication rates were found between high-dose dual therapy and bismuth-containing quadruple therapy by ITT, mITT and PP analysis[ITT:90.0% (95%CI 81.2%-95.6%) vs. 87.5% (95%CI 78.2%-93.8%), χ2=0.25, P=0.617;mITT:93.5% (95%CI 85.5%-97.9%) vs. 93.3% (95%CI 85.1%-97.8%), χ2<0.01, P=1.000; PP: 93.5% (95%CI 85.5%-97.9%) vs. 94.5% (95%CI 86.6%-98.5%), χ2<0.01, P=1.000 ]. The dual therapy group exhibited significantly less overall side effects compared with the quadruple therapy group [21.8% (17/78) vs. 38.5% (30/78), χ2=5.15,P=0.023]. There were no significant differences in the compliance rates between the two groups [98.7%(77/78) vs. 94.9%(74/78), χ2=0.83,P=0.363]. The cost of medications in the dual therapy was 32.0% lower compared with that in the quadruple therapy (472.10 RMB vs. 693.94 RMB). Conclusions: The dual regimen has a favorable effect on the eradication of H. pylori infection in servicemen patients. Based on the ITT analysis, the eradication rate of the dual regimen is grade B (90%, good). Additionally, it exhibited a lower incidence of adverse events, better compliance and significantly reduced cost. The dual regimen is expected to be a new choice for the first-line treatment of H. pylori infection in servicemen but needs further evaluation.
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Affiliation(s)
- X M Zhang
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - H C Min
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China Medical School of Chinese PLA, Beijing 100853, China
| | - J Chen
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China Medical School of Chinese PLA, Beijing 100853, China
| | - J L Zhi
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - H X Dong
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - J Y Kong
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - J Y Meng
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - G Sun
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Z K Wang
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - F Pan
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - L H Peng
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Y S Yang
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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Wang ZK, Wang YP, Rao ZW, Liu CY, Pan XH, Guo L. General Method for Selective Three-Component Carboacylation of Alkenes via Visible-Light Dual Photoredox/Nickel Catalysis. Org Lett 2023; 25:1673-1677. [PMID: 36880593 DOI: 10.1021/acs.orglett.3c00307] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
A photoredox/nickel dual catalytic protocol for the regioselective three-component carboacylation of alkenes with tertiary and secondary alkyltrifluoroborates as well as acyl chlorides is described. This redox-neutral protocol can be applied to the rapid synthesis of ketones with high diversity and complexity via a radical relay process. Many functional groups, allowing for various commercially available acyl chlorides, alkyltrifluoroborates, and alkenes, are tolerated under these mild conditions.
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Affiliation(s)
- Zi-Kai Wang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China
| | - Ya-Ping Wang
- Shanghai BIOS Technology Co., Ltd., 659 Maoyuan Road, Fengxian District, Shanghai 201418, China
| | - Zhi-Wu Rao
- Shanghai BIOS Technology Co., Ltd., 659 Maoyuan Road, Fengxian District, Shanghai 201418, China
| | - Chun-Yu Liu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China
| | - Xian-Hua Pan
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China
| | - Lei Guo
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China
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Dan WY, Yang YS, Peng LH, Sun G, Wang ZK. Gastrointestinal microbiome and cholelithiasis: Current status and perspectives. World J Gastroenterol 2023; 29:1589-1601. [PMID: 36970590 PMCID: PMC10037248 DOI: 10.3748/wjg.v29.i10.1589] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/23/2023] [Accepted: 03/06/2023] [Indexed: 03/14/2023] Open
Abstract
Cholelithiasis is a common digestive disease affecting 10% to 15% of adults. It imposes significant global health and financial burdens. However, the pathogenesis of cholelithiasis involves several factors and is incompletely elucidated. In addition to genetic predisposition and hepatic hypersecretion, the pathogenesis of cholelithiasis might involve the gastrointestinal (GI) microbiome, consisting of microorganisms and their metabolites. High-throughput sequencing studies have elucidated the role of bile, gallstones, and the fecal microbiome in cholelithiasis, associating microbiota dysbiosis with gallstone formation. The GI microbiome may drive cholelithogenesis by regulating bile acid metabolism and related signaling pathways. This review examines the literature implicating the GI microbiome in cholelithiasis, specifically gallbladder stones, choledocholithiasis, and asymptomatic gallstones. We also discuss alterations of the GI microbiome and its influence on cholelithogenesis.
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Affiliation(s)
- Wan-Yue Dan
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
- Medical School, Nankai University, Tianjin 300071, China
| | - Yun-Sheng Yang
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Li-Hua Peng
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Gang Sun
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Zi-Kai Wang
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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7
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Dan WY, Yang YS, Peng LH, Sun G, Wang ZK. Gastrointestinal microbiome and cholelithiasis: Current status and perspectives. World J Gastroenterol 2023; 29:1445-1457. [DOI: 10.3748/wjg.v29.i10.1445] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/10/2023] Open
Abstract
Cholelithiasis is a common digestive disease affecting 10% to 15% of adults. It imposes significant global health and financial burdens. However, the pathogenesis of cholelithiasis involves several factors and is incompletely elucidated. In addition to genetic predisposition and hepatic hypersecretion, the pathogenesis of cholelithiasis might involve the gastrointestinal (GI) microbiome, consisting of microorganisms and their metabolites. High-throughput sequencing studies have elucidated the role of bile, gallstones, and the fecal microbiome in cholelithiasis, associating microbiota dysbiosis with gallstone formation. The GI microbiome may drive cholelithogenesis by regulating bile acid metabolism and related signaling pathways. This review examines the literature implicating the GI microbiome in cholelithiasis, specifically gallbladder stones, choledocholithiasis, and asymptomatic gallstones. We also discuss alterations of the GI microbiome and its influence on cholelithogenesis.
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Affiliation(s)
- Wan-Yue Dan
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China,Medical School, Nankai University, Tianjin 300071, China
| | - Yun-Sheng Yang
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Li-Hua Peng
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Gang Sun
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Zi-Kai Wang
- Microbiota Division, Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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Li CL, Xu J, Xu HM, Liu J, Zhang LX, Wang ZK. Analysis of growth resistance mechanisms and causes in tea plants ( Camellia sinensis) in high-pH regions of Northern China. Front Nutr 2023; 10:1131380. [PMID: 36925953 PMCID: PMC10011619 DOI: 10.3389/fnut.2023.1131380] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 01/24/2023] [Indexed: 03/08/2023] Open
Abstract
Background In tea plantations with high-pH (pH > 6.5) in Northern China, tea plants are prone to yellowing disease, albinism, and reductions in components that contribute to plant quality, which affect the scale and rate of tea plantation development in Northern China. Methods To investigate the potential causes of these issues, Camellia sinensis cv. Pingyang Tezao and Camellia sinensis cv. Ruixue were planted in Shouguang city (a high-pH area, soil pH > 6.5) and Rizhao city (a normal-pH area, soil pH is 4.5-5.5), respectively; differences in growth morphology, pigment content, cell structure, quality-determining components, and element content of the two varieties in the two areas were analyzed. Results The results showed that tea leaves planted in Shouguang had varying degrees of yellowing disease and albinism; the pigment content in both varieties was significantly lower when planted in Shouguang compared with Rizhao. The cell structure was severely damaged and the main quality-determining components were decreased. Nitrogen (N), phosphorus (P), potassium (K), zinc (Zn), copper (Cu) and manganese (Mn) contents in the leaves of the two tea plant varieties were significantly lower when planted in Shouguang compared with those in Rizhao; the levels of these elements in Shouguang soil were significantly higher than in Rizhao soil. Calcium (Ca) contents in Shouguang soil was 9.90 times higher than that of Rizhao soil. Conclusions We conclude that the soil in high-pH areas hindered tea plant uptake of N, Zn, Cu, and Mn, which had a detrimental effect on chloroplasts and reductions in chlorophyll synthesis, contributing to yellowing disease and albinism. In addition, excessive calcium (Ca) in Shouguang soil was also an important contributor to these negative effects. High-pH soil hindered tea plant uptake of P and K, resulting in reductions in tea polyphenols, amino acids, and other major quality components.
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Affiliation(s)
- Chun-Lei Li
- Shandong Facility Horticulture Bioengineering Research Center/College of Agronomy, Weifang University of Science and Technology, Shouguang, China
| | - Jing Xu
- Department of Tourism and Hotel Management, PingDingShan Vocational and Technical College, Pingdingshan, China
| | - Hong-Mei Xu
- Shandong Facility Horticulture Bioengineering Research Center/College of Agronomy, Weifang University of Science and Technology, Shouguang, China
| | - Jie Liu
- Shandong Facility Horticulture Bioengineering Research Center/College of Agronomy, Weifang University of Science and Technology, Shouguang, China
| | - Long-Xiang Zhang
- College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Zi-Kai Wang
- Shandong Facility Horticulture Bioengineering Research Center/College of Agronomy, Weifang University of Science and Technology, Shouguang, China
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Han LQ, Wang CH, Cui TT, Liu F, Wang XD, Wang ZK, Li W. Comparison of the Therapeutic Effects of Iodine-125 Seed Implantation and Conventional Radiochemotherapy for Advanced Esophageal Cancer. Cancer Control 2022; 29:10732748221142946. [PMID: 36542559 PMCID: PMC9793016 DOI: 10.1177/10732748221142946] [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] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The purpose of this study was to explore the feasibility, safety and efficacy of iodine-125 seed implantation in the treatment of dysphagia of advanced esophageal cancer. METHODS We retrospectively analyzed patients with advanced esophageal cancer who underwent EUS-guided iodine-125 seed implantation or conventional chemoradiotherapy in our hospital. The propensity score match was used to reduce the baseline differences. RESULTS A total of 127 patients were enrolled, 17 patients received EUS-guided iodine 125 seed implantation (Group A), 31 patients received radiotherapy (Group B), 38 patients received chemotherapy (Group C) and 41 patients received chemotherapy combined with radiotherapy (Group D). At half month postoperatively, the dysphagia remission rate in Group A (100%) was better than that in Groups B (39.3%), C (20%), D (15.8%), respectively, in the original cohort (P < 0.01); At 1 month postoperatively, the dysphagia remission rate in Group A (86.7%) was better than that in Group B (57.1%) (P > 0.05), Group C (25.7%) (P < 0.05) and Group D (34.2%) (P < 0.05), respectively, in the original cohort. There was no statistically significant difference in median overall survival (OS) between Group A (16 months) and Group B (37 months) (P = 0.149), and between Group A (16months) and Group C (16 months) (P = 0.918) in the original cohort. The mean OS of Group D (54 months) was better than that of Group A (20 months) in the original cohort (P = 0.031). The incidences of grade ≥2 myelosuppression in Groups B, C, and D were 12.9%, 28.9%, and 43.9%, respectively; the incidence of grade ≥2 gastrointestinal adverse events in Groups B, C, and D were 12.9%, 15.8%, 12.2%, respectively. No serious adverse events were found in Group A. The radiation dose around the patient was reduced to a safe range after the distance from the implantation site was more than 1 m (4.2 ± 2.6 μSv/h) or with lead clothing (0.1 ± 0.07 μSv/h). CONCLUSIONS Compared with conventional radiotherapy or chemotherapy alone, iodine-125 seed implantation might improve dysphagia more quickly and safely, further clinical data is needed to verify whether it could effectively prolong the OS of patients.
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Affiliation(s)
- Lian-Qiang Han
- School of Medicine, Nankai University, Tianjin, China,Medical School of Chinese People’s Liberation Army (PLA),
Beijing, China,Department of Gastroenterology and
Hepatology, The First Medical Center, Chinese PLA General
Hospital, Beijing, China
| | - Chen-Huan Wang
- Department of Gastroenterology and
Hepatology, The First Medical Center, Chinese PLA General
Hospital, Beijing, China
| | - Ting-Ting Cui
- Department of Gastroenterology, Air
Force Medical Center, Air Force Medical University, Beijing, China
| | - Fang Liu
- Department of Gastroenterology and
Hepatology, The First Medical Center, Chinese PLA General
Hospital, Beijing, China
| | - Xiang-Dong Wang
- Department of Gastroenterology and
Hepatology, The First Medical Center, Chinese PLA General
Hospital, Beijing, China
| | - Zi-Kai Wang
- Department of Gastroenterology and
Hepatology, The First Medical Center, Chinese PLA General
Hospital, Beijing, China
| | - Wen Li
- School of Medicine, Nankai University, Tianjin, China,Medical School of Chinese People’s Liberation Army (PLA),
Beijing, China,Department of Gastroenterology and
Hepatology, The First Medical Center, Chinese PLA General
Hospital, Beijing, China,Wen Li, MD, PhD, School of Medicine, Nankai
University, No. 94 Weijin Road, Tianjin, 300071, China.
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10
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Wang D, Qi SG, Wang BH, Hu QT, Wang ZK, Wang Z. [Depression status and its influencing factors among the elderly aged 60 years and above in three provinces of China]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1925-1931. [PMID: 36572465 DOI: 10.3760/cma.j.cn112338-20220418-00313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Objective: The survey learned about the current status of depression in community's elderly aged 60 years and older and explored its influencing factors. Methods: Respondents from the "Prevention and Intervention of Key Diseases in the Elderly" project used a multi-stage stratified cluster random sampling method to complete the depression screening of 14 335 ≥60-year-old elderly people in 16 counties and districts Liaoning, Henan, and Guangdong provinces in 2019. Through the questionnaire survey on the demographic characteristics of the subjects, whether they live with their families or interact with neighbors, daily exercise, cognitive function, and activity of daily living (ADL), the PHQ-9 depression screening scale was used to assess the depression status of the elderly in the last fortnight. Binary logistic regression was used to analyze the influencing factors of depression in the elderly. Results: The prevalence of depressive symptoms among the elderly in Liaoning province, Henan province, and Guangdong province was 15.45%, and those in the three provinces were 18.17%, 18.87% and 9.93%, respectively. There were differences between urban and rural areas in the detection rate of depressive symptoms among the elderly in different regions, among which Henan: 17.09% vs. 20.61%; Guangdong province: 7.99% vs. 11.03%, the differences were statistically significant (P<0.05). The results of multivariate logistic regression analysis showed that the detection rate of depressive symptoms in older women was higher than that in men (OR=1.76, 95%CI: 1.58-1.96), in those divorced or separated (OR=2.08, 95%CI: 1.01-4.30), with cognitive dysfunction (OR=1.78, 95%CI: 1.59-1.98) or impaired essential ability of daily living (BADL) (OR=1.74, 95%CI: 1.23-2.46). The impaired instrumental ability of daily living (IADL) (OR=2.23, 95%CI: 1.97-2.54) was a risk factor for depression in the elderly (P<0.05), and the impact of IADL impairment on depression in the elderly was higher than that of BADL impairment (2.23 vs. 1.74). Results also showed that factors as: 80 years old and above (OR=0.82, 95%CI: 0.68-0.99), living with family members (OR=0.67, 95%CI: 0.57-0.80), interacting with neighbors (OR=0.86, 95%CI: 0.76-0.98), exercise multiple times per week (OR=0.82, 95%CI: 0.69-0.96), and exercise almost every day (OR=0.63, 95%CI: 0.56-0.70) were protective for depression in the elderly (P<0.05). Conclusions: The detection rate of depressive symptoms in the elderly aged 60 and above in the community is relatively high in China. Gender, marital status, social interaction, physical exercise, cognitive function, and ADL are all influencing factors of depression in the elderly. The elderly health care sector should carry out psychological prevention and intervention of critical populations.
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Affiliation(s)
- D Wang
- Cancer and Key Chronic Disease Control and Prevention Laboratory, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China School of Public Health, China Medical University, Shenyang 110122, China
| | - S G Qi
- Division of Elderly Health, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - B H Wang
- Cancer and Key Chronic Disease Control and Prevention Laboratory, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Q T Hu
- School of Public Health, China Medical University, Shenyang 110122, China
| | - Z K Wang
- Cancer and Key Chronic Disease Control and Prevention Laboratory, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Zhihui Wang
- Division of Elderly Health, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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11
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Cui TT, Chai NL, Cai FC, Li MY, Wang XD, Xiao NJ, Wang ZK, Liu F, Ling-Hu EQ, Li W. Analysis of risk factors for post-endoscopic papillectomy bleeding. Scand J Gastroenterol 2022; 57:1367-1373. [PMID: 35705372 DOI: 10.1080/00365521.2022.2085058] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Endoscopic papillectomy (EP) is an effective treatment for ampullary lesions but technically challenging because of anatomical specificities concerning the high rate of adverse events. Bleeding is one of the most feared complications and can be potentially life-threatening. AIM To study the risk factors for bleeding after EP are presented with the goal of establishing preventive measures. METHODS A total of 173 consecutive patients with ampullary lesions undergone EP from January 2006 to October 2020 were enrolled in this study. They were divided into a bleeding group and a non-bleeding group depending on whether postoperative bleeding occurred. Related factors were analyzed by univariate and multivariate logistics regression. RESULTS Postoperative bleeding was experienced in 33 patients (19.07%). Multivariate analysis also identified intraoperative bleeding (OR: 4.38, 95% CI: 1.87-11.15, p = .001) and endoscopic closure (OR: 0.25, 95% CI: 0.10-0.58, p = .001) as independent factors significantly associated with bleeding after EP. Lesion size (≥3 cm) was shown as an independent factor significantly associated with intraoperative bleeding (OR: 4.25, 95% CI: 1.21-16.44, p = .028). CONCLUSIONS This retrospective evaluation found that endoscopic closure was associated with reduced risk and intraoperative bleeding with increased risk of bleeding after EP. Lesion size may indirectly influence the risk of postoperative bleeding by increasing the risk of intraoperative bleeding.
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Affiliation(s)
- Ting-Ting Cui
- Department of Gastroenterology and Hepatology, Medical School of Chinese PLA, Beijing, China.,Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Ning-Li Chai
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Feng-Chun Cai
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Ming-Yang Li
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Xiang-Dong Wang
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Nian-Jun Xiao
- Department of Gastroenterology and Hepatology, Medical School of Chinese PLA, Beijing, China.,Department of Gastroenterology, Air Force Medical Center, Beijing, China
| | - Zi-Kai Wang
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Fang Liu
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - En-Qiang Ling-Hu
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Wen Li
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese PLA General Hospital, Beijing, China
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12
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Wang ZK, Zhang JH, Chen XS, Liu QF, Wang JB, Wu RY, Zhang Y, Wang K, Qu Y, Huang XD, Xiao JP, Gao L, Xu GZ, Yi JL, Luo JW. [Treatment and prognosis analysis of perineural invasion on sinonasal adenoid cystic carcinoma]. Zhonghua Zhong Liu Za Zhi 2022; 44:185-191. [PMID: 35184464 DOI: 10.3760/cma.j.cn112152-20200509-00433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To analyze the efficacy of sinonasal adenoid cystic carcinoma (ACC) with perineural invasion (PNI), and explore the prognostic value of PNI on sinonasal adenoid cystic carcinoma. Methods: The clinical data of 105 patients with sinonasal ACC admitted to Cancer Hospital, Chinese Academy of Medical Sciences from January 2000 to December 2016 were retrospectively reviewed. All patients were restaged according to American Joint Committee on Cancer 8th edition. Follow-up visits were conducted to obtain information of treatment failure and survival outcome. The Log rank test was used for univariate analysis of prognostic factors, and Cox regression model was used for multivariate prognostic analysis. Results: The maxillary sinus (n=59) was the most common primary site, followed by the nasal cavity (n=38). There were 93 patients with stage Ⅲ-Ⅳ. The treatment modalities included surgery alone (n=14), radiotherapy alone (n=13), preoperative radiotherapy plus surgery (n=10), and surgery plus postoperative radiotherapy (n=68). The median follow-up time was 91.8 months, the 5-year local control (LC), distant metastasis-free survival (DMFS), progression-free survival (PFS), and overall survival (OS) rates were 72.6%, 73.0%, 52.9% and 78.0%, respectively. There were 33 patients (31.4%) with PNI-positive. The 5-year DMFS, PFS, and OS rates of PNI-positive group were 53.7%, 29.4% and 56.5%, respectively, which were significantly inferior to those of PNI-negative group (80.8%, 63.0% and 86.8%, respectively, P<0.05), while there was no significant difference in the 5-year LC rate between both groups (64.5% vs 76.5%, P=0.273). The multivariate Cox regression analysis showed PNI was one of the poor prognostic factors of DMFS (HR=3.514, 95%CI: 1.557-7.932), PFS (HR=2.562, 95%CI: 1.349-4.866) and OS (HR=2.605, 95%CI: 1.169-5.806). Among patients with PNI-positive, the 5-year LC, PFS and OS rates of patients received surgery combined with radiotherapy were 84.9%, 41.3% and 72.7%, respectively, which were significantly higher than 23.3%, 10.0% and 26.7% of patients receiving surgery or radiotherapy alone (P<0.05). Conclusion: The presence of PNI increases the risk of distant metastasis in patients with sinonasal ACC. Compared with patients with PNI-negative, the prognosis of patients with PNI-positive is relatively poor, and surgery combined with radiotherapy for PNI-positive sinonasal ACC results in good clinical outcomes.
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Affiliation(s)
- Z K Wang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J H Zhang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - X S Chen
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Q F Liu
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J B Wang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - R Y Wu
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y Zhang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - K Wang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y Qu
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - X D Huang
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J P Xiao
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - L Gao
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - G Z Xu
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J L Yi
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J W Luo
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Abstract
Chromosomal integration of exogenous genes is preferred for industrially related fermentation, as plasmid-mediated fermentation leads to extra metabolic burden and genetic instability. Moreover, with the development and advancement of genome engineering and gene editing technologies, inserting genes into chromosomes has become more convenient; integration expression is extensively utilized in microorganisms for industrial bioproduction and expected to become the trend of recombinant protein expression. However, in actual research and application, it is important to enhance the expression of heterologous genes at the host genome level. Herein, we summarized the basic principles and characteristics of genomic integration; furthermore, we highlighted strategies to improve the expression of chromosomal integration of genes and pathways in host strains from three aspects, including chassis cell optimization, regulation of expression elements in gene expression cassettes, optimization of gene dose level and integration sites on chromosomes. Moreover, we reviewed and summarized the relevant studies on the application of integrated expression in the exploration of gene function and the various types of industrial microorganism production. Consequently, this review would serve as a reference for the better application of integrated expression.
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Affiliation(s)
- Zi-Kai Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Jiufu Qin
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR China
| | - Hui Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Zheng-Hong Xu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, PR China
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Li Y, Pan F, Sun G, Wang ZK, Meng K, Peng LH, Lu ZS, Dou Y, Yan B, Liu QS. Risk Factors and Clinical Outcomes of 54 Cases of Rectal Neuroendocrine Tumors with Incomplete Resection: A Retrospective Single-Center Study. Ther Clin Risk Manag 2021; 17:1153-1161. [PMID: 34764651 PMCID: PMC8576574 DOI: 10.2147/tcrm.s332838] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/29/2021] [Indexed: 11/23/2022] Open
Abstract
Objective The present study aimed to analyze the risk factors and clinical outcomes of the incomplete endoscopic resection of rectal neuroendocrine tumors (rNETs). Methods This study retrospectively analyzed the cases of 428 patients with rNETs who had undergone endoscopic treatment in the Department of Gastroenterology at the PLA General Hospital, China, between January 2010 and September 2019. Results Of the 428 patients with rNETs, 266 were men (62.1%) and 162 were women (37.9%). Of these, 54 had been pathologically diagnosed with positive incisal margins without lymphatic vessel invasion, and the incomplete resection (R1) rate was 12.6%. Among the R1 patients, 28 had received endoscopic submucosal dissection, 22 had received endoscopic mucosal resection, two had received snare resection, and two had undergone removal with forceps. In addition, there were 31 cases of grade G1 R1 resection (11.2%; 31/277), 13 cases of grade G2 R1 resection (23.2%; 13/56), and 10 cases whose grading was not described. The univariate analysis showed the pathological grade was statistically correlated with R1 resection (P < 0.05), and the grade G2 R1 resection rate was higher than that of grade G1. The multivariate logistic regression analysis showed that grade G2 was an independent risk factor leading to R1 resection (P = 0.02). All patients with R1 resection were followed up for 10–110 months, with an average of 38 months. No salvage treatment was performed. The endoscopic monitoring showed there were no recurrences during the follow-up period. Conclusion Endoscopic resection is a good option for rNETs, with a high complete resection rate and good prognosis, with rare recurrence even if endoscopic resection is not complete.
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Affiliation(s)
- Yan Li
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Fei Pan
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Gang Sun
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Zi-Kai Wang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Ke Meng
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Li-Hua Peng
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Zhong-Sheng Lu
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Yan Dou
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Bin Yan
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Qing-Sen Liu
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, People's Republic of China
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Li SL, Li W, Yin J, Wang ZK. Endoscopic papillectomy for ampullary adenomatous lesions: A literature review. World J Gastrointest Oncol 2021; 13:1466-1474. [PMID: 34721778 PMCID: PMC8529916 DOI: 10.4251/wjgo.v13.i10.1466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 06/02/2021] [Accepted: 08/09/2021] [Indexed: 02/06/2023] Open
Abstract
Ampullary adenomatous lesions of the gastrointestinal tract are rare and can be asymptomatic. Therefore, ampullary adenomas with malignant potential require prompt removal, regardless of whether they are adenomatous or carcinomatous lesions. Endoscopic papillectomy is a safe and effective alternative therapy to surgery to treat duodenal papillary lesions in selected patients. Accurate preoperative diagnosis and staging of ampullary adenomatous lesions are critical for predicting prognosis and determining the most appropriate therapeutic approach. Furthermore, the management and prevention of adverse events and endoscopic treatment for remnant or recurrent lesions and surveillance are essential for successful endoscopic management of ampullary adenomatous lesions. This literature review was based on PubMed and MEDLINE and focused on recent advancements in the endoscopic papillectomy technique to provide a comprehensive view of endoscopic papillectomy to treat ampullary adenomatous lesions.
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Affiliation(s)
- Shu-Ling Li
- Department of Gastroenterology and Hepatology, The Fourth Medical Center, Chinese PLA General Hospital, Beijing 100048, China
| | - Wen Li
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Jian Yin
- Department of Gastroenterology and Hepatology, The Fourth Medical Center, Chinese PLA General Hospital, Beijing 100048, China
| | - Zi-Kai Wang
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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Wang ZK, Wang ZW, Shen X, Liu H. [Analysis of maternal mortality trend and age-period-cohort model in China from 1992 to 2017]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:742-746. [PMID: 34139814 DOI: 10.3760/cma.j.cn112150-20210127-00083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the trend of maternal mortality in China from 1992 to 2017, and to evaluate the effects of age, period and cohort of maternal mortality by using the age-period-cohort (APC) model. Methods: The data of maternal mortality in China from 1992 to 2017 were collected from the Global Burden of Disease project. The maternal mortality rate was adopted to describe the trend of death. The APC model and the estimable function algorithm were used to evaluate the impact of age, period and birth cohort factors on maternal mortality risk in China. Results: From1992 to 2017, the maternal mortality rate in China fluctuated slightly and then continued to decline and finally increased slightly. During this period, the net drift was -10.00% per year (95%CI:-10.92% to -9.08% per year), and all the local drifts were lower than zero in all age groups of 10-54 years old (P<0.05). The results of the APC model analysis showed that the maternal mortality risk of women in their life stage showed a trend of rapid decrease, then a slow climb and finally a rapid increase. The period relative risk and cohort relative risk of maternal mortality both showed a monotonous decreasing trend. Conclusion: From 1992 to 2017, the maternal mortality rate in China generally shows a downward trend, and the risk of maternal mortality has significant age, period and cohort effects.
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Affiliation(s)
- Z K Wang
- Department of Academic Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Z W Wang
- Department of Academic Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - X Shen
- Department of Academic Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - H Liu
- Department of Academic Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Shang YT, Qin J, Gong JS, Wang ZK, Li H, Li H, Shi JS, Xu ZH. High-throughput screening of a nicotinate dehydrogenase producing Pseudomonas putida mutant for efficient biosynthesis of 6-hydroxynicotinic acid. Molecular Catalysis 2021. [DOI: 10.1016/j.mcat.2021.111600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Liu GD, Wang N, Wang HM, Li X, Shao JJ, Liu ZF, Jiang M, Wang L, Wang ZK, Li M, Cao XY, Wang J, Zhang R, Chen YD. Military medical research on internal diseases in modern warfare: new concepts, demands, challenges, and opportunities. Mil Med Res 2021; 8:20. [PMID: 33712087 PMCID: PMC7953602 DOI: 10.1186/s40779-021-00313-8] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 03/05/2021] [Indexed: 12/25/2022] Open
Abstract
Battlefield internal medicine aims at the treatment of combatants and noncombatants with various internal diseases on the battlefield. The military medical research on battlefield internal diseases focuses on the pathogenesis, clinical management, and prevention of internal diseases under military war conditions. In both wartime and peacetime, the soldiers suffer from more internal diseases than surgical wounds. With the introduction of high-tech weapons, including chemical, physical, and biological agents, a large number of special internal illnesses and casualties will appear in future wars. The battles often occur in special environments, such as high or low temperatures, plateau or polar areas, and micro- or hyper-gravity. The current theories of battlefield internal medicine are mainly derived from wars decades ago and cannot meet the needs of military medical support under the conditions of modern warfare. Therefore, the military medical research on battlefield internal medicine should be based on contemporary military situations, focus on the purpose of treating battlefield internal diseases, and adhere to the actual needs of the troops in peacetime and wartime. We should investigate the pathogenesis of battlefield internal diseases and explore the threats that may arise in future wars to ensure the advancement of battlefield internal medicine. This review highlights new concepts, demands, challenges, and opportunities for the further development of military medical research on battlefield internal medicine.
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Affiliation(s)
- Guang-Dong Liu
- Division of Health Services, Chinese PLA General Hospital & Chinese PLA Medical School, Beijing, 100853, China
| | - Nan Wang
- Division of Health Services, Chinese PLA General Hospital & Chinese PLA Medical School, Beijing, 100853, China
| | - Hai-Ming Wang
- Department of Cardiovascular Medicine, Chinese PLA General Hospital & Chinese PLA Medical School, 28 Fuxing Road, Beijing, 100853, China
| | - Xin Li
- Department of Health Services, the First Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
| | - Jun-Jie Shao
- The First Clinical Medical College of Inner Mongolia Medical University, Hohhot, 010059, China
| | - Zi-Fan Liu
- Department of Cardiovascular Medicine, Chinese PLA General Hospital & Chinese PLA Medical School, 28 Fuxing Road, Beijing, 100853, China
| | - Min Jiang
- Department of Cardiovascular Medicine, Chinese PLA General Hospital & Chinese PLA Medical School, 28 Fuxing Road, Beijing, 100853, China
| | - Lin Wang
- Department of Cardiovascular Medicine, Chinese PLA General Hospital & Chinese PLA Medical School, 28 Fuxing Road, Beijing, 100853, China
| | - Zi-Kai Wang
- Department of Gastroenterology, the First Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
| | - Meng Li
- Department of Hematology, the First Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
| | - Xue-Ying Cao
- Department of Nephrology, the First Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
| | - Jiang Wang
- Department of Respiratory and Intensive Medicine, Chinese PLA General Hospital, Beijing, 100853, China
| | - Ran Zhang
- Department of Cardiovascular Medicine, Chinese PLA General Hospital & Chinese PLA Medical School, 28 Fuxing Road, Beijing, 100853, China.
| | - Yun-Dai Chen
- Department of Cardiovascular Medicine, Chinese PLA General Hospital & Chinese PLA Medical School, 28 Fuxing Road, Beijing, 100853, China.
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Wang ZK, Liu F, Wang Y, Wang XD, Tang P, Li W. Preliminary experience of hybrid endoscopic submucosal dissection by duodenoscope for recurrent laterally spreading papillary lesions. World J Gastroenterol 2020; 26:5673-5681. [PMID: 33088160 PMCID: PMC7545392 DOI: 10.3748/wjg.v26.i37.5673] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 06/15/2020] [Revised: 08/08/2020] [Accepted: 09/11/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The management strategies for recurrent ampullary adenoma after endoscopic papillectomy are still controversial. Patients with the recurrent papillary lesions need to receive repetitive endoscopic interventions due to the limitations of conventional endoscopic techniques.
AIM To assess the feasibility, efficacy, and safety of hybrid endoscopic submucosal dissection (ESD) by duodenoscope for recurrent, laterally spreading papillary lesions.
METHODS We enrolled two patients with recurrent, laterally spreading, duodenal papillary adenomas with no intraductal extension confirmed by follow-up between March 2017 and September 2018. After marking the resection borders of the lesion using a dual knife, a submucosal cushion was created by injecting a mixture of saline solution, methylene blue, and adrenaline. A total circumferential incision and submucosal excision was performed by dual knife combined with insulated-tip diathermic knife, and then the lesion was ligated and resected using an electric snare. Endoscopic hemostasis was applied during the endoscopic procedures. Moreover, the endoscopic retrograde cholangiopancreatography (ERCP) procedures, including selective cannulation and stent implantation of biliary and pancreatic ducts, were performed. Additionally, we performed endoclip closure for mucosal defect after ESD.
RESULTS Hybrid ESD using a duodenoscope and biliary and pancreatic stent placement were performed successfully in two patients. The endoscopic size of recurrent papillary lesions was no more than 2 cm. Generally, the average total procedure time was 95.5 min, and the procedure time of ESD and ERCP was 38.5 min and 15.5 min, respectively. No serious complications occurred during the intraoperative and postoperative periods. The histopathological examination revealed tubulovillous adenoma negative for neoplastic extension at the cut margin in both patients. The duodenoscopic follow-up and histopathology of biopsy specimens at 3 mo after ESD showed no residual or recurrent lesions in ampullary areas in both cases. Both cases have been followed up with no recurrence to June 2020.
CONCLUSION Hybrid ESD by duodenoscope is technically challenging, and may be curative for recurrent, laterally spreading papillary adenomas < 2 cm. It should be performed cautiously in selected patients by experienced endoscopists.
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Affiliation(s)
- Zi-Kai Wang
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Fang Liu
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Yun Wang
- Department of Pathology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, Beijing, China
| | - Xiang-Dong Wang
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Ping Tang
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Wen Li
- Department of Gastroenterology and Hepatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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Wang SZ, Wang ZK, Gong JS, Qin J, Dong TT, Xu ZH, Shi JS. Improving the biocatalytic performance of co-immobilized cells harboring nitrilase via addition of silica and calcium carbonate. Bioprocess Biosyst Eng 2020; 43:2201-2207. [PMID: 32661565 DOI: 10.1007/s00449-020-02405-6] [Citation(s) in RCA: 4] [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: 04/15/2020] [Accepted: 07/07/2020] [Indexed: 11/27/2022]
Abstract
To improve nicotinic acid (NA) yield and meet industrial application requirements of sodium alginate-polyvinyl alcohol (SA-PVA) immobilized cells of Pseudomonas putida mut-D3 harboring nitrilase, inorganic materials were added to the SA-PVA immobilized cells to improve mechanical strength and mass transfer performance. The concentrations of inorganic materials were optimized to be 2.0% silica and 0.6% CaCO3. The optimal pH and temperature for SA-PVA immobilized cells and composite immobilized cells were both 8.0 and 45 °C, respectively. The half-lives of composite immobilized cells were 271.48, 150.92, 92.92 and 33.12 h, which were 1.40-, 1.35-, 1.22- and 1.63-fold compared to SA-PVA immobilized cells, respectively. The storage stability of the composite immobilized cells was slightly increased. The composite immobilized cells could convert 14 batches of 3-cyanopyridine with feeding concentration of 250 mM and accumulate 418 g ·L-1 nicotinic acid, while the SA-PVA immobilized cells accumulated 346 g L-1 nicotinic acid.
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Affiliation(s)
- Shun-Zhi Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Zi-Kai Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China.
| | - Jiufu Qin
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800, Kgs. Lyngby, Denmark
| | - Ting-Ting Dong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Zheng-Hong Xu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China.
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Abstract
Recent progress in MOF materials for SCs with different spatial dimensions, such as 2D MOFs, including conductive MOFs and nanosheets, and 3D MOFs, categorized as single metallic and multiple metallic MOFs, are reviewed.
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Affiliation(s)
- Kuai-Bing Wang
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing
- P. R. China
| | - Rong Bi
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing
- P. R. China
| | - Zi-Kai Wang
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing
- P. R. China
| | - Yang Chu
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing
- P. R. China
| | - Hua Wu
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing
- P. R. China
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22
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Wu Y, Wang YP, Ma J, Zhang YH, Sun HQ, Sun JP, Wang ZK, Xu J, Dai YC, Li N. [Development of a quantitative serum assay of Golgi protein 73 in hepatocellular carcinoma using xMAP technology]. Zhonghua Zhong Liu Za Zhi 2019; 41:351-356. [PMID: 31137168 DOI: 10.3760/cma.j.issn.0253-3766.2019.05.006] [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 establish a quantitative assay of serum Golgi protein 73 (GP73) using xMAP technology and evaluate its performance. Methods: Monoclonal antibodies against GP73 were prepared and purified, and antibody pair screening was performed by double-antibody sandwich enzyme-linked immunosorbent assay. The screened antibodies were used to construct a Luminex liquid chip detection system, and the analysis performance of the detection system was evaluated. The serum levels of GP73 were detected in 90 clinical samples from healthy controls and patients with chronic hepatitis B infection (CHB) and hepatocellular carcinoma (HCC). Results: Five anti-GP73 monoclonal antibodies were prepared and purified, and 5 antibody pairs were successfully screened. The Luminex liquid chip detection system of GP73 was successfully constructed using 8F10D1 and 10B9F11 antibody pairs. The analytical performance evaluation showed that the sensitivity of this system was 0.25 ng/ml and the dynamic range was 0.25-100 ng/ml. No cross reactivity was observed. The intra- and inter-assay variation for GP73 was <8% and <11%, respectively. The recovery was 83%-92%. The linear regression equation was y=1.141x+ 6.436 (r(2)=0.998 4, P<0.001). The GP73 concentrations in the serum samples of healthy control, CHB group, and HCC group were 42.8 (38.68, 55.90) ng/ml, 61.49 (43.59, 81) ng/ml, and 122.78 (49.36 liter, 264.55) ng/ml, respectively. The levels of GP73 in HCC group were significantly higher than those in CHB group and healthy controls (P<0.05). Moreover, the levels of GP73 in CHB group were significantly higher than those in healthy controls (P<0.05). Conclusions: A liquid chip detection system of GP73 was successfully constructed. It provides a powerful tool for the clinical application of GP73 in the future.
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Affiliation(s)
- Y Wu
- Department of Biomedical Information Center, Beijing You'an Hospital, Capital Medical University, Beijing 100069, China
| | - Y P Wang
- Department of Prenatal Diagnosis Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, China
| | - J Ma
- Beijing Qingyuan Bio-Technologies Inc, Beijing, 100102, China
| | - Y H Zhang
- Department of Biomedical Information Center, Beijing You'an Hospital, Capital Medical University, Beijing 100069, China
| | - H Q Sun
- Department of Biomedical Information Center, Beijing You'an Hospital, Capital Medical University, Beijing 100069, China
| | - J P Sun
- Department of Biomedical Information Center, Beijing You'an Hospital, Capital Medical University, Beijing 100069, China
| | - Z K Wang
- Department of Biomedical Information Center, Beijing You'an Hospital, Capital Medical University, Beijing 100069, China
| | - J Xu
- Department of Biomedical Information Center, Beijing You'an Hospital, Capital Medical University, Beijing 100069, China
| | - Y C Dai
- Department of Biomedical Information Center, Beijing You'an Hospital, Capital Medical University, Beijing 100069, China
| | - N Li
- Department of Surgery, Beijing You'an Hospital, Capital Medical University, Beijing 100069, China
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Li SL, Zhao E, Zhao L, Wang ZK, Li W. Transvaginal natural orifice transluminal endoscopic surgery in the diagnosis of ascites of unknown origin. Gastrointest Endosc 2019; 89:872-877. [PMID: 30391254 DOI: 10.1016/j.gie.2018.09.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Accepted: 09/30/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Natural orifice transluminal endoscopic surgery (NOTES) has been established in animal models and human studies, but few clinical studies have investigated transvaginal NOTES in the diagnosis of unexplained refractory ascites. We aimed to assess the feasibility, efficacy, and safety of transvaginal NOTES for the diagnosis of unexplained ascites in female patients. METHODS A prospective study was done involving 3 female patients with unexplained ascites. After general anesthesia and disinfection, a 1.0-cm incision was made in the posterior fornix of the vagina. A gastroscope was inserted into the abdominal cavity through the transvaginal incision and an artificial pneumoperitoneum was created; NOTES peritoneoscopy was performed to scrutinize the pathologic changes. Endoscopic biopsy specimens were obtained for pathologic examination. The transvaginal incision was closed by direct suturing. RESULTS Transvaginal NOTES for diagnostic peritoneoscopy was successfully performed in 3 patients. The mean operative time was 61 minutes. The estimated blood loss was 5 to 10 mL. The pathologic diagnoses were tuberculosis for all patients, and the symptoms and ascites disappeared after antituberculosis therapy. During the 4-year follow-up, no clinically significant adverse events occurred in any patient after NOTES. No patient experienced an annex inflammation, vaginitis, dyspareunia, or sexual dysfunction. All patients were comfortable and satisfied with the nonscarring surgical procedure. CONCLUSIONS Transvaginal NOTES for the diagnosis of unexplained ascites is feasible, effective, and safe. This method had no long-term effect on female sexual function and is particularly suitable for women who have special aesthetic requirements. (Clinical trial registration number: ChiCTR-TRC-10001053.).
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Affiliation(s)
- Shu-Ling Li
- Department of Gastroenterology and Hepatology, the General Hospital of the Chinese People's Liberation Army, Beijing, China
| | - Enfeng Zhao
- Department of Gastroenterology and Hepatology, the General Hospital of the Chinese People's Liberation Army, Beijing, China
| | - Li Zhao
- Department of Gastroenterology and Hepatology, Hainan Branch of the Chinese PLA General Hospital, Hainan, China
| | - Zi-Kai Wang
- Department of Gastroenterology and Hepatology, the General Hospital of the Chinese People's Liberation Army, Beijing, China
| | - Wen Li
- Department of Gastroenterology and Hepatology, the General Hospital of the Chinese People's Liberation Army, Beijing, China
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Wang SF, Li CY, Dai ZM, Wang ZK, Peng LH, Zhang XL, Li JF, Yang YS, Hu B, Ning SB, Zhang BY, Han JL, Song Y, Sun G, Nie ZG. Gender, Age, and Concomitant Diseases of Colorectal Diverticulum in China: A Study of 7,964 Cases. Dig Dis 2019; 37:116-122. [PMID: 30282076 DOI: 10.1159/000493461] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 09/04/2018] [Indexed: 02/05/2023]
Abstract
AIM To analyze the epidemiological features of colorectal diverticulum (CRD) in China. METHODS We retrospectively analyzed CRD patients in 8 tertiary hospitals located in 5 regions of China from 2000 to 2016. The detection rates, number and distribution, demographic information, concomitant disorders, and their associations were investigated. RESULTS Of 3,446,118 cases, 7,964 (2.3%) were CRD with a mean age of 56 years (11-92 years). The detection rate increased yearly and with increasing age. Males had a higher detection rate than females (3.0 vs. 1.47%, p < 0.01) and 1.8-times higher increase rate. The detection rate increased with age; however, females of > 60 years had a 2.8-times increasing rate than males. CRD occurred most frequently in the right-side colon, followed by rectum. Multiple diverticula were common in males and increased with age, with a 3-times higher increase rate than single lesion. Single-segment CRD occurred more frequently in males than in females (80.1 vs. 76.4%, p < 0.01). Concurred colon polyps were seen in 51.05% cases. CONCLUSION CRD detection rates increased annually and with age, particularly in senior females in China. Multiple diverticula were common in males and increased with age. CRD was predominant in the right-side colon. Polyps are the most common comorbidity associated with CRD.
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Affiliation(s)
- Shu-Fang Wang
- Department of Gastroenterology, Chinese PLA General Hospital, Beijing, China
| | - Cong-Yong Li
- Department of Geriatric Gastroenterology, General Hospital of PLA Navy, Beijing, China
| | - Zhong-Ming Dai
- Department of Gastroenterology, Chinese PLA General Hospital, Beijing, China
| | - Zi-Kai Wang
- Department of Gastroenterology, Chinese PLA General Hospital, Beijing, China
| | - Li-Hua Peng
- Department of Gastroenterology, Chinese PLA General Hospital, Beijing, China
| | - Xiu-Li Zhang
- Department of Gastroenterology, Chinese PLA General Hospital, Beijing, China
| | - Jian-Feng Li
- Department of Gastroenterology, Chinese PLA General Hospital, Beijing, China
| | - Yun-Sheng Yang
- Department of Gastroenterology, Chinese PLA General Hospital, Beijing,
| | - Bing Hu
- Department of Gastroenterology, West China Hospital, Chengdu, China
| | - Shou-Bin Ning
- Department of Gastroenterology, Air Force General Hospital, Beijing, China
| | - Bing-Yong Zhang
- Department of Gastroenterology, Henan Provincial People's Hospital, Zhengzhou, China
| | - Jun-Ling Han
- Department of Gastrointestinal Endocrinology, 187 Military Hospital, Haikou, China
| | - Ying Song
- Department of Gastroenterology, Xian Central Hospital, Xi An, China
| | - Gang Sun
- Department of Gastroenterology, Chinese PLA General Hospital, Beijing, China
- Department of Gastroenterology, Hainan Branch of the Chinese PLA General Hospital, Sanya, China
| | - Zhan-Guo Nie
- Department of Gastroenterology, General Hospital of the Xinjiang Military Region, Ürümqi, China
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Li WW, Wang DN, Wang ZK, Xu B. Fiber in-line Mach-Zehnder interferometer based on a pair of short sections of waveguide. Opt Express 2018; 26:11496-11502. [PMID: 29716067 DOI: 10.1364/oe.26.011496] [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] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 04/12/2018] [Indexed: 06/08/2023]
Abstract
A fiber in-line Mach-Zehnder interferometer based on a pair of femtosecond laser inscribed short sections of waveguide is presented. One short waveguide directs part of the propagating light from the fiber core to the cladding-air interface, and experiences multiple total internal reflections before taking back to the fiber core by the other short waveguide. The device is robust in structure, can be fabricated in a fast way and with a flexible manner, and has the capability of ambient refractive index sensing, which makes it highly desirable for many "lab-in-fiber" applications.
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26
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Li Y, Li YH, Zhou X, Wu B, Chen JP, Wang ZK, Wang X, Shi HJ, Li RS. DNA hydroxymethylation rate in the AChE and HoxC4 promoter associated with human sperm quality. Andrologia 2018; 50:e12963. [PMID: 29430663 DOI: 10.1111/and.12963] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/03/2018] [Indexed: 12/23/2022] Open
Abstract
The relationship of altered DNA 5'-hydroxymethylation in human spermatozoa with seminal parameters remains unclear. The aim of the study was to investigate the association between the 5'-hydroxymethylcytosine (5hmC) rate in the promoters of acetylcholinesterase (AChE) and homeobox C4 (HoxC4) genes and human sperm concentration/motility. The study population consisted of three groups: asthenozoospermia (AZ), oligoasthenozoospermia (OAZ) and normozoospermia (NZ). The 5hmC rate in the promoter was measured by CCGG loci-dependent MspI/HpaII restriction mapping of glycosylation-modified sperm DNA combined with a hydroxymethylation-specific real-time polymerase chain reaction assay. The 5hmC rate in the AChE promoter in group AZ and OAZ was higher than that in group NZ (p < .05). A weak inverse correlation between 5hmC rate of AChE and sperm motility was observed in all subjects (r = -.172, p < .05). The 5hmC rate in the HoxC4 promoter in group OAZ was lower than that in group NZ (p < .05). These results indicated that altered 5hmC rates of AChE and HoxC4 promoters are associated with low sperm motility and sperm concentration respectively.
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Affiliation(s)
- Y Li
- School of Pharmacy, Fudan University, Shanghai, China
| | - Y H Li
- Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China
| | - X Zhou
- Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China
| | - B Wu
- Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China
| | - J P Chen
- Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China
| | - Z K Wang
- The hospital affiliated to Shanghai Institute of Planned Parenthood Research, Shanghai, China
| | - X Wang
- The hospital affiliated to Shanghai Institute of Planned Parenthood Research, Shanghai, China
| | - H J Shi
- Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China
| | - R S Li
- Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, China
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Wang ZK, Yang L, Wu LL, Mao H, Zhou YH, Zhang PF, Dai GH. Long non-coding RNA LINC00261 sensitizes human colon cancer cells to cisplatin therapy. ACTA ACUST UNITED AC 2017; 51:e6793. [PMID: 29267503 PMCID: PMC5731330 DOI: 10.1590/1414-431x20176793] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 09/11/2017] [Indexed: 12/12/2022]
Abstract
Colon cancer is one of the most common digestive tumors. The present study aimed to explore the functional role, as well as the underlying mechanism of long non-coding RNA LINC00261 in colon cancer. Expression of LINC00261 was analyzed in colon cancer cell lines and human normal cell lines. Acquired resistance cell lines were then built and the acquired resistance efficiency was detected by evaluating cell viability. Thereafter, the effects of LINC00261 overexpression on cisplatin-resistant colon cancer cells were measured, as well as cell apoptosis, viability, migration, and invasion. Subsequently, we investigated the interaction of LINC00261 and β-catenin. The results showed that the LINC00261 gene was down-regulated in colon cancer cell lines and tissues, and in cisplatin-resistant cells. LINC00261 overexpression might relieve cisplatin resistance of colon cancer cells via promoting cell apoptosis, and inhibiting cell viability, migration, and invasion. Moreover, LINC00261 might down-regulate nuclear β-catenin through restraining β-catenin from cytoplasm into nuclei or it could also promote β-catenin degradation and inhibit activation of Wnt pathway. Finally, LINC00261 reduced cisplatin resistance of colon cancer in vivo and enhanced the anti-colon cancer effect of cisplatin through reducing tumor volume and weight.
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Affiliation(s)
- Z K Wang
- The Second Department of Medical Oncology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - L Yang
- The Second Department of Medical Oncology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - L L Wu
- Tumor Center Laboratory, Chinese People's Liberation Army General Hospital, Beijing, China
| | - H Mao
- The Second Department of Medical Oncology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Y H Zhou
- The Second Department of Medical Oncology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - P F Zhang
- The Second Department of Medical Oncology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - G H Dai
- The Second Department of Medical Oncology, Chinese People's Liberation Army General Hospital, Beijing, China
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Li WW, Chen WP, Wang DN, Wang ZK, Xu B. Fiber inline Mach-Zehnder interferometer based on femtosecond laser inscribed waveguides. Opt Lett 2017; 42:4438-4441. [PMID: 29088182 DOI: 10.1364/ol.42.004438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 09/27/2017] [Indexed: 06/07/2023]
Abstract
A new type of Mach-Zehnder interferometer device based on in-fiber optical waveguides, fabricated by direct femtosecond laser pulse inscription in a single-mode fiber has been demonstrated and successfully employed for temperature and strain measurement. The in-fiber waveguide can couple the light out from the fiber core and guide it along the cladding region before directing it back into the fiber core. Such an inner structured interferometer device is compact and robust, can be constructed in a flexible and precisely controlled manner, and hence is expected to have many potential applications.
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Wang Y, Wu Z, Yin YH, Rao SQ, Liu B, Huang XQ, Liu XX, Li WH, Ye SL, Li SY, Yu XC, Wu DR, Xu J, Wang ZK, Zhang R, Li CQ. Blood service in the Tibetan regions of Garzê and Aba, China: a longitudinal survey. Transfus Med 2017; 27:408-412. [PMID: 28944508 DOI: 10.1111/tme.12468] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 04/04/2017] [Revised: 08/02/2017] [Accepted: 08/16/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND Garzê and Aba form the second largest Tibetan-inhabited area of China. Blood services have never been reported for this region before. OBJECTIVE To assess the current situation and analyse whether a safe and adequate blood supply has been developed in both Garzê and Aba. METHODS We conducted a longitudinal survey covering the period 2011-2016. The subjects of interest were recruited from non-remunerated voluntary donation, blood testing, clinical transfusion practices and infrastructure of local blood service systems. RESULTS The donation rate and blood collection volume were below the average levels of both the Sichuan Province and mainland China. Component therapy was widely used, but inappropriate usage of whole blood existed. A lack of national specific standards for people on the plateaus led to local blood transfusions being conducted without full clinical assessment. Endemic and frequently occurring disease, such as hydatid disease and gastrointestinal disease, were inevitable risks for blood utilisation and safety. The potential influence of religious belief and traditions, like 'male-leaving marriages', of Tibetans on donor recruitment and blood safety requires further research. CONCLUSIONS A relatively safe and complete blood service system has been developed in this region. However, there is still an urgent need for comprehensive and effective support from the government in terms of policies and finance. As an epidemic area of hydatid disease and sexually transmitted disease, this region needs to emphasise public health measures, such as blood safety and inappropriate usage of blood products.
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Affiliation(s)
- Y Wang
- The Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - Z Wu
- Department of Obstetrics and Gynecology, Sichuan Academy of Medical Science & Sichuan Provincial People's Hospital, Chengdu, China
| | - Y H Yin
- The Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - S Q Rao
- Department of Clinical laboratory, Sichuan Academy of Medical Science & Sichuan Provincial People's Hospital, Chengdu, China
| | - B Liu
- The Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - X Q Huang
- The Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - X X Liu
- The Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - W H Li
- The Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - S L Ye
- The Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - S Y Li
- Department of Transfusion, People's Hospital of Garzê, Sichuan, China
| | - X C Yu
- Department of Transfusion, People's Hospital of Aba, Sichuan, China
| | - D R Wu
- Blood Center of Aba, Sichuan, China
| | - J Xu
- Blood Center of Garzê, Sichuan, China
| | - Z K Wang
- The Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - R Zhang
- The Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
| | - C Q Li
- The Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, China
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He BB, Hu B, Yen HW, Cheng GJ, Wang ZK, Luo HW, Huang MX. High dislocation density-induced large ductility in deformed and partitioned steels. Science 2017; 357:1029-1032. [PMID: 28839008 DOI: 10.1126/science.aan0177] [Citation(s) in RCA: 499] [Impact Index Per Article: 71.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 08/10/2017] [Indexed: 12/11/2022]
Abstract
A wide variety of industrial applications require materials with high strength and ductility. Unfortunately, the strategies for increasing material strength, such as processing to create line defects (dislocations), tend to decrease ductility. We developed a strategy to circumvent this in inexpensive, medium manganese steel. Cold rolling followed by low-temperature tempering developed steel with metastable austenite grains embedded in a highly dislocated martensite matrix. This deformed and partitioned (D and P) process produced dislocation hardening but retained high ductility, both through the glide of intensive mobile dislocations and by allowing us to control martensitic transformation. The D and P strategy should apply to any other alloy with deformation-induced martensitic transformation and provides a pathway for the development of high-strength, high-ductility materials.
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Affiliation(s)
- B B He
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - B Hu
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Xue Yuan Lu 30, Beijing 100083, China
| | - H W Yen
- Department of Materials Science and Engineering, National Taiwan University, Roosevelt Road, Taipei 10617, Taiwan
| | - G J Cheng
- Department of Materials Science and Engineering, National Taiwan University, Roosevelt Road, Taipei 10617, Taiwan
| | - Z K Wang
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China
| | - H W Luo
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Xue Yuan Lu 30, Beijing 100083, China.
| | - M X Huang
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
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He LY, Zhang H, Wang ZK, Zhang HZ. Diagnostic and prognostic significance of E-cadherin and Ki-67 expression in non-small cell lung cancer patients. Eur Rev Med Pharmacol Sci 2016; 20:3812-3817. [PMID: 27735037] [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: 06/06/2023]
Abstract
OBJECTIVE To elucidate the relationship between E-cadherin (E-cad) and Ki-67, and to determine their clinical significance in non-small cell lung cancer (NSCLC). PATIENTS AND METHODS A total of 68 NSCLC paraffin embedded tissue specimens and tumor-adjacent normal tissue specimens were collected. The expression of E-cad and Ki-67 was examined by immunohistochemistry and the relationships between the expression of these two markers were evaluated. The clinicopathological features were correlated with the expression of E-cad and Ki-67 to check whether these proteins have any association and if exist an association whether E-cad and Ki-67 can be used in diagnosis and prognosis of NSCLSC. RESULTS E-cad was expressed in all the normal tissues but Ki-67 expressed in only 5.8% of normal tissues. Ki-67 and E-cad expression were observed in 61.8% and 25% of NSCLC tissues respectively. Correlation analysis revealed an inverse association between the expression of E-cad and Ki-67 (r = 0.524, p = 0.000). The clinicopathological features such as tumor differentiation, TNM stage, lymph node metastasis and pleural invasion were all significantly associated with E-cad and Ki-67 expression (p < 0.05). CONCLUSIONS E-cad and Ki-67 together play a key role in the development, invasion and metastasis of NSCLC and combined detection of them serve as a potential marker for clinical diagnosis in addition to exploiting them as a therapeutic target.
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Affiliation(s)
- L-Y He
- Departments of fifth Oncology, Hebei People's Hospital, Shijiazhuang, Hebei, P.R. China.
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Chang CH, Hsieh CH, Huang JC, Wang C, Liao YC, Hsueh CH, Du XH, Wang ZK, Wang X. Designing a stronger interface through graded structures in amorphous/nanocrystalline ZrCu/Cu multilayered films. Nanotechnology 2016; 27:225701. [PMID: 27103429 DOI: 10.1088/0957-4484/27/22/225701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Many multilayered nano-structures appear to fail due to brittle matter along the interfaces. In order to toughen them, in this study, the microstructure and interface strength of multilayered thin films consisting of amorphous ZrCu and nanocrystalline Cu (with sharp or graded interfaces) are examined and analyzed. The interface possesses a gradient nature in terms of composition, nanocrystalline phase size and volume fraction. The bending results extracted from the nano-scaled cantilever bending samples demonstrate that multilayered films with graded interfaces would have a much higher interface bending strength/strain/modulus, and an overall improvement upgrade of more than 50%. The simple graded interface design of multilayered thin films with improved mechanical properties can offer much more promising performance in structural and functional applications for MEMS or optical coating.
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Affiliation(s)
- C H Chang
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, Taiwan 804, Republic of China
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Ren RR, Sun G, Yang YS, Peng LH, Wang SF, Shi XH, Zhao JQ, Ban YL, Pan F, Wang XH, Lu W, Ren JL, Song Y, Wang JB, Lu QM, Bai WY, Wu XP, Wang ZK, Zhang XM, Chen Y. Chinese physicians’ perceptions of fecal microbiota transplantation. World J Gastroenterol 2016; 22:4757-4765. [PMID: 27217707 PMCID: PMC4870082 DOI: 10.3748/wjg.v22.i19.4757] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 03/29/2016] [Accepted: 04/07/2016] [Indexed: 02/07/2023] Open
Abstract
AIM: To explore Chinese physicians’ perceptions towards fecal microbiota transplantation (FMT) and to provide information and an assessment of FMT development in China.
METHODS: A self-administered questionnaire was developed according to the FMT practice guidelines and was distributed to physicians in hospitals via Internet Research Electronic Data Capture (REDcap) software and electronic mails to assess their attitudes toward and knowledge of FMT. The questionnaire included a brief introduction of FMT that was followed by 20 questions. The participants were required to respond voluntarily, under the condition of anonymity and without compensation. Except for the fill-in-the-blank questions, all of the other questions were required in the REDcap data collection systems, and the emailed questionnaires were completed based on eligibility.
RESULTS: Up to December 9, 2014, 844 eligible questionnaires were received out of the 980 distributed questionnaires, with a response rate of 86.1%. Among the participants, 87.3% were from tertiary hospitals, and there were 647 (76.7%) gastroenterologists and 197 (23.3%) physicians in other departments (non-gastroenterologists). Gastroenterologists’ awareness of FMT prior to the survey was much higher than non-gastroenterologists’ (54.3 vs 16.5%, P < 0.001); however, acceptance of FMT was not statistically different (92.4 vs 87.1%, P = 0.1603). Major concerns of FMT included the following: acceptability to patients (79.2%), absence of guidelines (56.9%), and administration and ethics (46.5%). On the basis of understanding, the FMT indications preferred by physicians were recurrent Clostridium difficile infection (86.7%), inflammatory bowel disease combined with Clostridium difficile infection (78.6%), refractory ulcerative colitis (70.9%), ulcerative colitis (65.4%), Crohn’s disease (59.4%), chronic constipation (43.7%), irritable bowel syndrome (39.1%), obesity (28.1%) and type 2 diabetes (23.9%). For donor selection, the majority of physicians preferred individuals with a similar gut flora environment to the recipients. 76.6% of physicians chose lower gastrointestinal tract as the administration approach. 69.2% of physicians considered FMT a safe treatment.
CONCLUSION: Chinese physicians have awareness and a high acceptance of FMT, especially gastroenterologists, which provides the grounds and conditions for the development of this novel treatment in China. Physicians’ greatest concerns were patient acceptability and absence of guidelines.
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Wu XX, Li J, Wu XD, Liu Q, Wang ZK, Liu SS, Li SN, Ma YL, Sun J, Zhao L, Li HY, Li DM, Li WB, Su AY. Ectopic expression of Arabidopsis thaliana Na+(K+)/H+ antiporter gene, AtNHX5, enhances soybean salt tolerance. Genet Mol Res 2016; 15:gmr7483. [PMID: 27323012 DOI: 10.4238/gmr.15027483] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 11/03/2022]
Abstract
Drought and salt stresses are the two major factors influencing the yield and quality of crops worldwide. Na(+)(K(+))/H(+) antiporters (NHXs) are ubiquitous membrane proteins that play important roles in maintaining the cellular pH and Na(+)(K(+)) homeostasis. The model plant Arabidopsis potentially encodes six NHX genes, namely AtNHX1 to 6. In the present study, AtNHX5, a comparatively less well-studied NHX, was cloned and transferred into a soybean variety, Dongnong-50, via Agrobacterium-mediated cotyledonary node transformation to assess its role in improving salt tolerance of the transgenic plants. The transgenic soybean plants were tolerant to the presence of 300 mM NaCl whereas the non-transgenic plants were not. Furthermore, after NaCl treatment, the transgenic plants had a higher content of free proline but lower content of malondialdehyde compared to the non-transgenic plants. Our results revealed that that AtNHX5 possibly functioned by efficiently transporting Na(+) and K(+) ions from the roots to the leaves. Overall, the results obtained in this study suggest that soybean salt tolerance could be improved through the over expression of Arabidopsis AtNHX5.
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Affiliation(s)
- X X Wu
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, College of Agronomy, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - J Li
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, College of Agronomy, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - X D Wu
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, College of Agronomy, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Q Liu
- Institute of Horticultural Sciences, Heilongjiang Academy of Agricultural Science, Harbin, Heilongjiang, China
| | - Z K Wang
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, College of Agronomy, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - S S Liu
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, College of Agronomy, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - S N Li
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, College of Agronomy, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Y L Ma
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, College of Agronomy, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - J Sun
- Berries Research Institute, Heilongjiang Academy of Agricultural Sciences, Suiling, Heilongjiang, China
| | - L Zhao
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, College of Agronomy, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - H Y Li
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, College of Agronomy, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - D M Li
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, College of Agronomy, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - W B Li
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, College of Agronomy, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - A Y Su
- College of Resources and Environment, Northeast Agricultural University, Harbin, Heilongjiang, China
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Wang SB, Liu YP, Zhang ZH, Wang ZK, Xu YX, Wang ZC. Temporal and spatial expression profiles of Frizzled 3 in the ovary during the estrous cycle. Genet Mol Res 2016; 15:gmr7152. [PMID: 26909900 DOI: 10.4238/gmr.15017152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Frizzled 3 is an important receptor in the Wnt/β-catenin pathway, a conserved signaling pathway that regulates gene expression and controls diverse developmental processes. However, the role of this protein during follicular development in the adult ovary is not known. The present study was designed to investigate the expression and localization of Frizzled 3 mRNA and protein during the estrous cycle in the mouse ovary through in situ hybridization (ISH), real-time quantitative polymerase chain reaction, immunohistochemistry and western blot. ISH results showed that in proestrus, high expression of Frizzled 3 was found in the granulosa and stroma with weak levels in the corpus luteum. In estrus and diestrus, the stroma had high Frizzled 3 expression, but levels were low in granulosa cells and corpus luteum. In the metestrus, moderate expression of Frizzled 3 was found in the stroma but low to no expression was found in luteal cells and follicles. The mRNA and protein levels of Frizzled 3 were found to be the highest in proestrus and diestrus compared to estrus and metestrus (P < 0.05), confirming the ISH results. During estrus and diestrus, high Frizzled 3 expression was observed in the stroma and moderate levels in granulosa cells, and during estrus and proestrus, low expression was seen in the oocyte cell membrane. The western blot results further confirmed this change during the estrous cycle. Together, these results indicate that Frizzled 3 is involved in regulating follicular development and oocyte maturation during the estrous cycle.
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Affiliation(s)
- S B Wang
- Laboratory of Sport Physiology and Biomedicine, School of Physical Education and Sport Sciences, Fujian Normal University, Fuzhou, China.,Provincial Key Laboratory for Developmental Biology and Neurosciences, College of Life Sciences, Fujian Normal University, Fuzhou, China.,College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Y P Liu
- Laboratory of Sport Physiology and Biomedicine, School of Physical Education and Sport Sciences, Fujian Normal University, Fuzhou, China.,Provincial Key Laboratory for Developmental Biology and Neurosciences, College of Life Sciences, Fujian Normal University, Fuzhou, China
| | - Z H Zhang
- Provincial Key Laboratory for Developmental Biology and Neurosciences, College of Life Sciences, Fujian Normal University, Fuzhou, China
| | - Z K Wang
- Provincial Key Laboratory for Developmental Biology and Neurosciences, College of Life Sciences, Fujian Normal University, Fuzhou, China.,College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Y X Xu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Z C Wang
- Laboratory of Sport Physiology and Biomedicine, School of Physical Education and Sport Sciences, Fujian Normal University, Fuzhou, China.,Provincial Key Laboratory for Developmental Biology and Neurosciences, College of Life Sciences, Fujian Normal University, Fuzhou, China.,College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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Liao YF, Wang Y, Huang Y, Zha SF, Liu JJ, Wang ZK, Yin YP, Liao YF, Wang Y. ISOLATION AND FUNCTIONAL ANALYSIS OF McMenA, A GENE ENCODING A 1,4-DIHYDROXY-2-NAPHTHOATE OCTAPRENYLTRANSFERASE IN Mylabris cichorii. Arch Insect Biochem Physiol 2015; 89:127-137. [PMID: 25772016 DOI: 10.1002/arch.21229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Cantharidin is a biomolecule with a role in host defense that can also be used as an anticancer drug. The in vivo biosynthetic pathway for cantharidin has been the subject of debate for several decades and the mechanism is not yet completely understood. To study the biosynthetic pathway of cantharidin in blister beetles, Mylabris cichori, a full-length MenA (McMenA) cDNA was cloned based on the partial sequence of the MenA gene from a suppression subtractive hybridization (SSH) library of male and female adult M. cichorii. The cDNA was 1264 base pairs (bp) with an open reading frame of 1026 bp nucleotides encoding a 341 amino acid protein. Analysis of the McMenA amino acid sequence showed that the aspartate rich motif N/DDxxD represented binding sites for prenyl diphosphate via a Mg(2+) ion. Phylogenetic analysis showed that McMenA was most closely related to MenA of Tribolium castaneum, and the amino acid sequence similarity was 86%. The expression pattern of McMenA in adults was analyzed using RT-qPCR, and we found that the highest expression of McMenA occurred during 22-25 days in the sex-separate breeding males, while the lowest expression occurred in females at the same time. Injection with a specific double-strand RNA (dsRNA) of McMenA led to a significant reduction of McMenA mRNA levels after 24 h. Cantharidin and ATP concentrations dropped around the same time. Together, our data showed that the McMenA gene might be involved in cantharidin biosynthesis.
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Affiliation(s)
- Y F Liao
- School of Life Science, Chongqing University, Chongqing Engineering Research Center for Fungal Insecticides, Chongqing, China
| | - Y Wang
- School of Life Science, Chongqing University, Chongqing Engineering Research Center for Fungal Insecticides, Chongqing, China
| | - Y Huang
- School of Life Science, Chongqing University, Chongqing Engineering Research Center for Fungal Insecticides, Chongqing, China
| | - S F Zha
- School of Life Science, Chongqing University, Chongqing Engineering Research Center for Fungal Insecticides, Chongqing, China
| | - J J Liu
- School of Life Science, Chongqing University, Chongqing Engineering Research Center for Fungal Insecticides, Chongqing, China
| | - Z K Wang
- School of Life Science, Chongqing University, Chongqing Engineering Research Center for Fungal Insecticides, Chongqing, China
| | - Y P Yin
- School of Life Science, Chongqing University, Chongqing Engineering Research Center for Fungal Insecticides, Chongqing, China
| | - Y F Liao
- Clinical Medicine College of Tianjin Medical University, Tianjin, China
| | - Y Wang
- Panzhihua University, Panzhihua, China
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Wang ZK, Du X, Wang YM, Li CQ, Lin FZ, Cao HJ, Ye SL, Hu JJ, Yuan J. Cohn process influences the functional anticoagulant activity of human protein C. Genet Mol Res 2015; 14:860-70. [PMID: 25730025 DOI: 10.4238/2015.february.2.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cohn fraction IV (CFIV) is a byproduct of a plasma fractionation process known as the Cohn process. It is an inexpensive source of protein C, retaining about 90% of protein C (PC) in human plasma. We investigated whether PC is affected during the Cohn process and evaluated correlations among coagulant activity, amidolytic activity and PC antigen during the Cohn process. CFIV was redissolved with citrate-buffered saline for 5 h at 4°C, and then centrifuged at 3500 g for 40 min at 4°C. Functional anticoagulant activity was measured with a one-stage coagulation method based on activated partial thromboplastin time. The functional amidolytic activity of PC was determined using chromogenic substrate assay, and measurement of PC antigen was performed by ELISA. In CFIV, anticoagulant activity declined significantly, with a loss of >80%, while amidolytic activity was not significantly altered, compared to PC antigen. Prior to the Cohn process, high-rank correlations were observed in cryosupernatant, with rs = 0.921 for anticoagulant and amidolytic activities (P = 0.009), 0.896 for anticoagulant activity and antigen (P = 0.014) and 0.832 for amidolytic activity and antigen (P = 0.031). After the Cohn process in CFIV, there was also a high correlation between amidolytic activity and antigen (rs = 0.782, P = 0.038). There were no significant correlations between anticoagulant activity and antigen (rs = 0.223, P = 0.653), or anticoagulant and amidolytic activity (rs = 0.236, P = 0.675). We conclude that the Cohn process significantly influences the anticoagulant activity of PC. Compared to the antigen, PC lost greater than 80% of its anticoagulant activity, but retained its amidolytic activity, during the Cohn process.
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Affiliation(s)
- Z K Wang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College, Chengdu, China
| | - X Du
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College, Chengdu, China
| | - Y M Wang
- Guizhou Taibang Biological Products Co., Ltd., Guiyang, China
| | - C Q Li
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College, Chengdu, China
| | - F Z Lin
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College, Chengdu, China
| | - H J Cao
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College, Chengdu, China
| | - S L Ye
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College, Chengdu, China
| | - J J Hu
- Guizhou Taibang Biological Products Co., Ltd., Guiyang, China
| | - J Yuan
- Guizhou Taibang Biological Products Co., Ltd., Guiyang, China
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Wang ZK, Yang YS, Chen Y, Yuan J, Sun G, Peng LH. Intestinal microbiota pathogenesis and fecal microbiota transplantation for inflammatory bowel disease. World J Gastroenterol 2014; 20:14805-14820. [PMID: 25356041 PMCID: PMC4209544 DOI: 10.3748/wjg.v20.i40.14805] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Revised: 06/16/2014] [Accepted: 07/16/2014] [Indexed: 02/06/2023] Open
Abstract
The intestinal microbiota plays an important role in inflammatory bowel disease (IBD). The pathogenesis of IBD involves inappropriate ongoing activation of the mucosal immune system driven by abnormal intestinal microbiota in genetically predisposed individuals. However, there are still no definitive microbial pathogens linked to the onset of IBD. The composition and function of the intestinal microbiota and their metabolites are indeed disturbed in IBD patients. The special alterations of gut microbiota associated with IBD remain to be evaluated. The microbial interactions and host-microbe immune interactions are still not clarified. Limitations of present probiotic products in IBD are mainly due to modest clinical efficacy, few available strains and no standardized administration. Fecal microbiota transplantation (FMT) may restore intestinal microbial homeostasis, and preliminary data have shown the clinical efficacy of FMT on refractory IBD or IBD combined with Clostridium difficile infection. Additionally, synthetic microbiota transplantation with the defined composition of fecal microbiota is also a promising therapeutic approach for IBD. However, FMT-related barriers, including the mechanism of restoring gut microbiota, standardized donor screening, fecal material preparation and administration, and long-term safety should be resolved. The role of intestinal microbiota and FMT in IBD should be further investigated by metagenomic and metatranscriptomic analyses combined with germ-free/human flora-associated animals and chemostat gut models.
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Abstract
As a nonspecific physical stimulation, the effect of acupuncture on diseases is produced by motivating the inherent regulatory system in the body, having the characteristics of whole regulation, dual directional regulation, etc. Modern scientific researches show that body's inherent regulatory system is neuro-endocrine-immune (NEI) network. Hence, we speculate that the regulatory effect of acupuncture may be produced through its regulation of NEI network. In this article, we reviewed the recent researches about acupuncture's effect on the NEI network, to find out the evidence of acupuncture adjusting NEI network and provide some evidences for revealing the mechanism of acupuncture.
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Affiliation(s)
- S S Ding
- College of Acupuncture and Moxibustion, Tianjin University of Traditional Chinese Medicine, No. 312 Anshan West Road, Nankai District, Tianjin 300193, China.
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40
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Wang ZK, Yang YS, Stefka AT, Sun G, Peng LH. Review article: fungal microbiota and digestive diseases. Aliment Pharmacol Ther 2014; 39:751-66. [PMID: 24612332 DOI: 10.1111/apt.12665] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 09/16/2013] [Accepted: 01/29/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND The role of the fungal microbiota in digestive diseases is poorly defined, but is becoming better understood due to advances in metagenomics. AIM To review the gastrointestinal fungal microbiota and its relationship with digestive diseases. METHODS Search of the literature using PubMed and MEDLINE databases. Subject headings including 'fungal-bacterial interactions', 'mycotoxins', 'immunity to fungi', 'fungal infection', 'fungal microbiota', 'mycobiome' and 'digestive diseases' were used. RESULTS The fungal microbiota is an integral part of the gastrointestinal microecosystem with up to 10(6) microorganisms per gram of faeces. Next-generation sequencing of the fungal 18S rRNA gene has allowed better characterisation of the gastrointestinal mycobiome. Numerous interactions between fungi and bacteria and the complex immune response to gastrointestinal commensal or pathogenic fungi all impact on the pathophysiology of inflammatory bowel disease and other gastrointestinal inflammatory entities such as peptic ulcers. Mycotoxins generated as fungal metabolites contribute to disturbances of gastrointestinal barrier and immune functions and are associated with chronic intestinal inflammatory conditions as well as hepatocellular and oesophagogastric cancer. Systemic and gastrointestinal disease can also lead to secondary fungal infections. Fungal genomic databases and methodologies need to be further developed and will allow a much better understanding of the diversity and function of the mycobiome in gastrointestinal inflammation, tumourigenesis, liver cirrhosis and transplantation, and its alteration as a consequence of antibiotic therapy and chemotherapy. CONCLUSIONS The fungal microbiota and its metabolites impact gastrointestinal function and contribute to the pathogenesis of digestive diseases. Further metagenomic analyses of the gastrointestinal mycobiome in health and disease is needed.
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Affiliation(s)
- Z K Wang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Chinese PLA Medical Academy, Beijing, China
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Wang ZK, Xiao JG, Huang XF, Gong YC, Li W. Effect of biliary drainage on inducible nitric oxide synthase, CD14 and TGR5 expression in obstructive jaundice rats. World J Gastroenterol 2013; 19:2319-30. [PMID: 23613625 PMCID: PMC3631983 DOI: 10.3748/wjg.v19.i15.2319] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Revised: 12/19/2012] [Accepted: 03/06/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of biliary drainage on inducible nitric oxide synthase (iNOS), CD14 and TGR5 expression in rats with obstructive jaundice (OJ).
METHODS: Male adult Sprague-Dawley rats were randomly assigned to four groups: OJ, sham operation (SH), internal biliary drainage (ID) and external biliary drainage (ED). Rat models were successfully established by two operations and succumbed for extraction of Kupffer cells (KCs) and liver tissue collection on the 8th and 15th day. KCs were isolated by in situ hepatic perfusion and digested with collagen IV, density gradient centrifuged by percoll reagent and purified by cell culture attachment. The isolated KCs were cultured with the endotoxin lipopolysaccharide (LPS) with and without the addition of ursodeoxycholic acid (UDCA). The expression of iNOS, CD14 and bile acid receptor-TGR5 protein in rat liver tissues was determined by immunohistochemistry. The expression of iNOS and CD14 messenger RNA (mRNA) on the isolated KCs was detected by reverse transcription polymerase chain reaction (PCR) and the TGR5 mRNA level in KCs was measured by real-time quantitative PCR.
RESULTS: The iNOS protein was markedly expressed in the liver of OJ rats, but rare expressed in SH rats. After relief of OJ, the iNOS expression was decidedly suppressed in the ID group (ID vs OJ, P < 0.01), but obviously increased in rats of ED (ED vs OJ, P = 0.004). When interfered only with LPS, the expression of iNOS mRNA by KCs was increased in the OJ group compared with the SH group (P = 0.004). After relief of biliary obstruction, the iNOS mRNA expression showed slight changes in the ED group (ED vs OJ, P = 0.71), but dropped in the ID group (ID vs OJ, P = 0.001). Compared with the simple intervention with LPS, the expressions of iNOS mRNA were significantly inhibited in all four groups after interfered with both LPS and UDCA (P < 0.01, respectively). After bile duct ligation, the CD14 protein expression in rat liver was significantly strengthened (OJ vs SH, P < 0.01), but the CD14 mRNA level by KCs was not up-regulated (OJ vs SH, P = 0.822). After relieving the OJ, the expression of CD14 protein was reduced in the ID group (ID vs OJ, P < 0.01), but not reduced in ED group (ED vs OJ, P = 0.591). And then the CD14 mRNA expression was aggravated by ED (ED vs OJ, P < 0.01), but was not significantly different between the ID group and the SH and OJ groups (ID vs SH, P = 0.944; ID vs OJ, P = 0.513, respectively). The expression of TGR5 protein and mRNA increased significantly in OJ rats (OJ vs SH, P = 0.001, respectively). After relief of OJ, ID could reduce the expression of TGR5 protein and mRNA to the levels of SH group (ID vs SH, P = 0.22 and P = 0.354, respectively), but ED could not (ED vs SH, P = 0.001, respectively).
CONCLUSION: ID could be attributed to the regulatory function of activation of KCs and release of inflammatory mediators.
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Abstract
Metagenomics which combines the power of genomics, bioinformatics, and systems biology, provide new access to the microbial world. Metagenomics permit the genetic analysis of complex microbial populations without requiring prior cultivation. Through the conceptual innovations in metagenomics and the improvements in DNA high-throughput sequencing and bioinformatics analysis technology, gastrointestinal microbiology has entered the metagenomics era and become a hot topic worldwide. Human microbiome research is underway, however, most studies in this area have focused on the composition and function of the intestinal microbiota and the relationship between intestinal microbiota and metabolic diseases (obesity, diabetes, metabolic syndrome, etc.) and intestinal disorders [inflammatory bowel disease, colorectal cancer, irritable bowel syndrome (IBS), etc.]. Few investigations on microbiota have been conducted within the upper gastrointestinal tract (esophagus, stomach and duodenum). The upper gastrointestinal microbiota is essential for several gastrointestinal illnesses, including esophagitis, Barrett’s esophagus, and esophageal carcinoma, gastritis and gastric cancer, small intestinal bacterial overgrowth, IBS and celiac disease. However, the constitution and diversity of the microbiota in different sections of the upper gastrointestinal tract under health and various disease states, as well as the function of microbiota in the pathogenesis of various digestive diseases are still undefined. The current article provides an overview of the recent findings regarding the relationship between upper gastrointestinal microbiota and gastrointestinal diseases; and discusses the study limitations and future directions of upper gastrointestinal microbiota research.
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Wang ZK, Zheng HY. Investigation on CO(2) laser irradiation inducing glass strip peeling for microchannel formation. Biomicrofluidics 2012; 6:12820-1282012. [PMID: 22662087 PMCID: PMC3365339 DOI: 10.1063/1.3670362] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Accepted: 11/24/2011] [Indexed: 06/01/2023]
Abstract
The study investigates the use of CO(2) laser to induce glass strip peeling off to form microchannels on soda lime gass substrate. The strip peeling exhibits a strong dependence on the energy deposition rate on the glass surface. In spite of the vast difference in the combination of laser power and scanning speed, when the ratio of the two makes the energy deposition rate in the range 3.0-6.0 J/(cm(2) s), the temperature rising inside glass will be above the strain point and reach the softening region of the glass. As a result, glass strip peeling is able to occur and form microchannels with dimensions of 20-40 μm in depth and 200-280 μm in width on the glass surface. Beyond this range, higher energy depsotion rate would lead to surface melting associated with solidification cracks and lower energy deposition rate causes the generation of fragment cracks.
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Affiliation(s)
- Z K Wang
- Singapore Institute of Manufacturing Technology (SIMTech), 71 Nanyang Drive, Singapore 638075, Singapore
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Zhang VL, Wang ZK, Lim HS, Ng SC, Kuok MH, Jain S, Adeyeye AO. Nanostructured magnonic crystal with magnetic-field tunable bandgap. J Nanosci Nanotechnol 2011; 11:2657-2660. [PMID: 21449448 DOI: 10.1166/jnn.2011.2730] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Most experimental investigations into magnonic bandgaps are based on structures composed of single-constituent magnetic materials. Here we report Brillouin and numerical studies of the spin dynamics of a bi-component magnonic crystal, viz. a one-dimensional periodic array of alternating permalloy and cobalt 150 nm-wide nanostripes. Our measurements, together with those for a similar crystal composed of 250 nm-wide nanostripes, suggest that for a stripe width ratio of 1:1, the bandgap width of such magnonic arrays increases with crystal lattice constant. The bandgap parameters are strongly dependent on external magnetic field. This magnetic-field tunability of the bandgap is expected to be a crucial property of devices based on magnonic crystals. The agreement between numerical calculations, based on finite element analysis, and the experimental data is generally good.
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Affiliation(s)
- V L Zhang
- Department of Physics, National University of Singapore, 117542, Singapore
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Lin CS, Lim HS, Wang ZK, Ng SC, Kuok MH, Adeyeye AO. Magnetic field dependence of the lowest-frequency edge-localized spin wave mode in a magnetic nanotriangle. J Nanosci Nanotechnol 2011; 11:2615-2618. [PMID: 21449438 DOI: 10.1166/jnn.2011.2708] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
An understanding of the spin dynamics of nanoscale magnetic elements is important for their applications in magnetic sensing and storage. Inhomogeneity of the demagnetizing field in a non-ellipsoidal magnetic element results in localization of spin waves near the edge of the element. However, relative little work has been carried out to investigate the effect of the applied magnetic fields on the nature of such localized modes. In this study, micromagnetic simulations are performed on an equilateral triangular nanomagnet to investigate the magnetic field dependence of the mode profiles of the lowest-frequency spin wave. Our findings reveal that the lowest-frequency mode is localized at the base edge of the equilateral triangle. The characteristics of its mode profile change with the ground state magnetization configuration of the nanotriangle, which, in turn, depends on the magnitude of the in-plane applied magnetic field.
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Affiliation(s)
- C S Lin
- Department of Physics, National University of Singapore, Singapore 117542, Singapore
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Wang ZK, Lim HS, Liu HY, Ng SC, Kuok MH, Tay LL, Lockwood DJ, Cottam MG, Hobbs KL, Larson PR, Keay JC, Lian GD, Johnson MB. Spin waves in nickel nanorings of large aspect ratio. Phys Rev Lett 2005; 94:137208. [PMID: 15904029 DOI: 10.1103/physrevlett.94.137208] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2004] [Indexed: 05/02/2023]
Abstract
The spin dynamics of high-aspect-ratio nickel nanorings in a longitudinal magnetic field have been investigated by Brillouin spectroscopy and the results are compared with a macroscopic theory and three-dimensional micromagnetic simulations. Good agreement is found between the measured and calculated magnetic field dependence of the spin wave frequency. Simulations show that as the field decreases from saturation, the rings switch from a "bamboo" to a novel "twisted bamboo" state at a certain critical field, and predict a corresponding dip in the dependence of the spin wave frequency on the magnetic field.
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Affiliation(s)
- Z K Wang
- Department of Physics, National University of Singapore, Singapore 117542, Singapore
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Kuok MH, Lim HS, Ng SC, Liu NN, Wang ZK. Brillouin study of the quantization of acoustic modes in nanospheres. Phys Rev Lett 2003; 90:255502. [PMID: 12857142 DOI: 10.1103/physrevlett.90.255502] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2003] [Indexed: 05/24/2023]
Abstract
The vibrational modes in three-dimensional ordered arrays of unembedded SiO2 nanospheres have been studied by Brillouin light scattering. Multiple distinct Brillouin peaks are observed whose frequencies are found to be inversely proportional to the diameter (approximately 200-340 nm) of the nanospheres, in agreement with Lamb's theory. This is the first Brillouin observation of acoustic mode quantization in a nanoparticle arising from spatial confinement. The distinct spectral peaks measured afford an unambiguous assignment of seven surface and inner acoustic modes. Interestingly, the relative intensities and polarization dependence of the Brillouin spectrum do not agree with the predictions made for Raman scattering.
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Affiliation(s)
- M H Kuok
- Department of Physics, National University of Singapore, Singapore 117542, Republic of Singapore.
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Wang ZK, Kuok MH, Ng SC, Lockwood DJ, Cottam MG, Nielsch K, Wehrspohn RB, Gösele U. Spin-wave quantization in ferromagnetic nickel nanowires. Phys Rev Lett 2002; 89:027201. [PMID: 12097013 DOI: 10.1103/physrevlett.89.027201] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2002] [Indexed: 05/23/2023]
Abstract
The dynamical properties of uniform two-dimensional arrays of nickel nanowires have been investigated by inelastic light scattering. Multiple spin waves are observed that are in accordance with dipole-exchange theory predictions for the quantization of bulk spin waves. This first study of the spin-wave dynamics in ferromagnetic nanowire arrays reveals strong mode quantization effects and indications of a subtle magnetic interplay between nanowires. The results show that it is important to take proper account of these effects for the fundamental physics and future technological developments of magnetic nanowires.
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Affiliation(s)
- Z K Wang
- Department of Physics, National University of Singapore, Singapore 117542, Republic of Singapore
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Lian X, Wang ZK, Zhuo LB. [Dual sieve-mesh collimator]. Zhongguo Yi Liao Qi Xie Za Zhi 2001; 25:125-127. [PMID: 12583275] [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: 05/24/2023]
Abstract
In this paper is advanced a new type of collimator-dual sieve-mesh collimator. Its principle is to use scanned electronic beam to attack 400 matrix-arranged wolfram targets of the square holes on the upper side of the main collimator and created 400 small X-ray fields sized by 10 mm x 10 mm. These X-ray fields will leave on its center 400 smaller X-ray fields sized by 5 mm x 5 mm after being further collimated by a sub-collimator. What's more, 16 different groups of such X-ray fields can be left on the center of the same field by controlling the all-round movement of the main collimator and sub-collimator in proper order and by scanning it round by round and mesh by mesh with electronic beams. It is these ting fields groups that make up various treatment fields with different energy (Dosage). This type of collimator can replace and simplify all other present collimators on accelerators and conformal-intensity modulation radiotherapy equipment. It has advantage of reducing the costs of radio-therapy equipment and making conformal and intensity modulation radiotherapy easier to perform.
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Affiliation(s)
- X Lian
- Equipment Department of Wenzhou Medical College First Affiliate Hospital
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50
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Wu LM, Ni ZF, Wang ZK, Lin Z, Sun QX. [Relationship between differential expression patterns of multigene families and heterosis in a wheat diallel crosses]. Yi Chuan Xue Bao 2001; 28:256-66. [PMID: 11280999] [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: 04/16/2023]
Abstract
In order to understand molecular basis of heterosis, the patterns of differential gene expression of multigene families between wheat hybrids and their parents in seedling leaves were analyzed by using mRNA differential display. Relationships between differential gene expression patterns, heterosis and F1 hybrid performance were determined. Four patterns of differential gene expression were observed, which include: (1) bands observed in both parents but not in the F1; (2) bands occurring in only one parent but not in the F1 or the other parent; (3) bands detected in only the F1 but neither of the parents; (4) bands present in one parent and F1 but absent in the other parent. The analysis showed that patterns of differential gene expression were not correlated with the F1 hybrid performance for all the eight agronomic traits. However, differentially expressed fragments that occurred only in the F1 but neither of the parents were found to be positively correlated with heterosis. On the contrary, fragments observed in both parents but not in the F1 were negatively correlated with heterosis. It is concluded that the differential expression of regulatory genes plays an important role in heterosis.
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Affiliation(s)
- L M Wu
- Department of Plant Genetics & Breeding, China Agricultural University, Beijing 100094, China
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