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Liang WJ, Chao L, Zhao XM, Zhang RG, Zhao RQ, Wu WD, Song J. Ambient Temperature and Risk of Outpatient Chronic Pharyngitis Visits: A Time-series Analysis in Xinxiang, China. Biomed Environ Sci 2023; 36:991-995. [PMID: 37932069 DOI: 10.3967/bes2023.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 08/24/2023] [Indexed: 11/08/2023]
Affiliation(s)
- Wen Juan Liang
- Department of Epidemiology, International School of Public Health and One Heath, Hainan Medical University, Haikou 571199, Hainan, China;Department of Epidemiology and Health Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, Henan, China
| | - Ling Chao
- Department of Epidemiology and Health Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, Henan, China
| | - Xiang Mei Zhao
- Department of Epidemiology and Health Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, Henan, China
| | - Rong Guang Zhang
- Department of Epidemiology, International School of Public Health and One Heath, Hainan Medical University, Haikou 571199, Hainan, China
| | - Rui Qing Zhao
- Xinxiang Maternal and Child Health Care Hospital, Xinxiang 453003 Henan, China
| | - Wei Dong Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, Henan, China
| | - Jie Song
- Department of Epidemiology and Health Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, Henan, China
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Juan Liang W, Xin Wu W, Lu Z, Feng Bai Y, Feng F, Jun Jin W. Stimulus responsive luminescence and application of rotor type 1,1'-([2,2'-bithiophene]-3,3'-diyl)bis(ethan-1-one) and 3'-acetyl-[2,2'-bithiophene]-3-carbaldehyde as molecular rotors. Spectrochim Acta A Mol Biomol Spectrosc 2022; 279:121395. [PMID: 35605424 DOI: 10.1016/j.saa.2022.121395] [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] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 05/05/2022] [Accepted: 05/12/2022] [Indexed: 06/15/2023]
Abstract
Two dithiophene aldehyde/ketone derivatives are designed as luminescence molecular rotors, i.e., 1,1'-([2,2'-bithiophene]-3,3'-diyl)bis(ethan-1-one) (BTBE) and 3'-acetyl-[2,2'-bithiophene]-3-carbaldehyde (BTAC). Their absorption and luminescence properties, as well as the stimulus responsive luminescence characteristics of water spikes are studied in detail. In order to further explore relationship of luminescence and molecular structure, three reference compounds are also synthesized, named 1-(2-methylthiophen-3-yl)ethanone (MTE), 2-methylthiophene-3-carbaldehyde (MTC) and 4H-cyclohepta[1,2-b:7,6-b']dithiophen-4-one (CDTO). BTBE and BTAC have two obvious absorption bands in the short wavelength region with peak wavelengths of about 212 nm and 260 nm, respectively, while there is a weak trailing type absorption band in the range of about 300-400 nm. Their fluorescence spectra show two luminescence bands in the range of 280-350 nm and 400-600 nm, respectively, and the latter is stronger. Compared with the absorption and luminescence spectra of the reference compounds, it is determined that two absorption bands of BTBE and BTAC in shorter wavelength region are derived from the single thiophene ring carbonyl planar unit, while the absorption band in longer region are derived from the integrated structure of dithiophene carbonyl. The fluorescence bands with peaks of about 300 nm and 470 nm originate respectively from the localized F-C vertical excited states (LE), i.e., the excited state from single planar thienyl-carbonyl unit, and integrated excited state (IE), i.e., the excited state from integrated di-thienyl-carbonyl rings linked covalently with less dihedral angle and greater degree of conjugation at excited state. The crystal structure data show that two thiophene rings possess larger dihedral angles in crystal states, 86.9° for BTBE and 60.8° for BTAC, respectively. However, theoretical calculation results prove the conformational stabilization energy changes little, less than 1.5 kcal/mol, as dihedral angle changes from 50° to 100°. Hydrogen bonding is sufficient to overcome the energy required for this conformational change. Therefore, both BTBE and BTAC can produce water stimulation response luminescence behavior. This stimulating response behavior of BTBE and BTAC can be applied to the preparation of water writable film materials.
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Affiliation(s)
- Wen Juan Liang
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, Shanxi 037009, PR China
| | - Wen Xin Wu
- College of Chemistry, Beijing Normal University, Beijing 100875, PR China
| | - Zhen Lu
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, Shanxi 037009, PR China
| | - Yun Feng Bai
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, Shanxi 037009, PR China
| | - Feng Feng
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, Shanxi 037009, PR China.
| | - Wei Jun Jin
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, Shanxi 037009, PR China; College of Chemistry, Beijing Normal University, Beijing 100875, PR China.
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Liang WJ, Hu JZ, Long JQ, Zhu AC, Duan G. [Evaluation of effect based on different typing methods in Escherichia coli]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1321-1325. [PMID: 35981997 DOI: 10.3760/cma.j.cn112338-20220303-00167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To evaluate the typing and clinical application effect based on clustered regularly interspaced short palindromic repeats (CRISPRs), serotype, and Multilocus Sequence Typing (MLST). Methods: The spacers, serotype and sequence type (ST) were obtained with CRISPRsFinder, SeroTypeFinder and MLST. PCR was used to amplify the CRISPRs, and the spacers were used to predict serotype and ST, then comparing with the serotype and ST. Results: We defined the I-E CRISPR/Cas as CT-Ⅰ, I-F CRISPR/Cas as CT-Ⅱ, and only CRISPR3-4 as CT-Ⅲ. We designated each unique arrangement spacer profile as a unique CRISPRs type. A total of 79 CT types, 76 serotypes, and 66 STs were identified. The CRISPRs typing was the most discriminating, with the Simpson index of 0.936, having the highest correlation with serology with the adjusted Rand index of 0.908. The CRISPRs type could divide the same serotype (ST) into two subtypes [O157∶H7(ST11), O104∶H4(ST678), and O26∶H11(ST21)]. The detection rates of CRISPR1, CRISPR2, CRISPR3, CRISPR4, and CRISPR3-4 were 81.1%, 94.5%, 1.4%, 1.4%, and 4.6%, with the accuracy rate of 95.0% and 100.0% according to the spacers to forecast O157∶H7 (ST11) and ST131. Conclusion: Based on the CRISPRs spacer, this method can be used as an essential molecular typing for E.coli, as it presents a good typing and clinical application effect.
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Affiliation(s)
- W J Liang
- Department of Epidemiology and Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - J Z Hu
- Department of Epidemiology and Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - J Q Long
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - A C Zhu
- Department of Epidemiology and Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
| | - Guangcai Duan
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
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Wang YB, Li YY, Lu H, Tao YJ, Li YH, Wang L, Liang WJ. Now- and Fore-casting the Secular Epidemiological Trends and Seasonality of the Comeback of Scarlet Fever in China: A 16-year Time Series Analysis. Biomed Environ Sci 2022; 35:563-567. [PMID: 35882418 DOI: 10.3967/bes2022.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 06/02/2022] [Indexed: 06/15/2023]
Affiliation(s)
- Yong Bin Wang
- Department of Epidemiology and Health Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, Henan, China
| | - Yan Yan Li
- Department of Epidemiology and Health Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, Henan, China
| | - Hao Lu
- Department of Epidemiology and Health Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, Henan, China
| | - Ying Jun Tao
- Department of Epidemiology and Health Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, Henan, China
| | - Yu Hong Li
- National Center for Tuberculosis Control and Prevention, China Center for Disease Control and Prevention, Beijing 102206, China
| | - Lei Wang
- Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Wen Juan Liang
- Department of Epidemiology and Health Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, Henan, China
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Zhou Y, Liang WJ, Chen ZH, Liu T, Song T, Chen SW, Wang P, Li JL, Lan YH, Cheng MJ, Huang JX, Niu JW, Xiao JP, Hu JX, Lin LF, Huang Q, Deng AP, Tan XH, Kang M, Chen GM, Dong MR, Zhong HJ, Ma W. [Course of disease and related epidemiological parameters of COVID-19: a prospective study based on contact tracing cohort]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:474-478. [PMID: 35488546 DOI: 10.3760/cma.j.cn112150-20220107-00025] [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: 06/14/2023]
Abstract
Objective: To analyze the course of disease and epidemiological parameters of COVID-19 and provide evidence for making prevention and control strategies. Methods: To display the distribution of course of disease of the infectors who had close contacts with COVID-19 cases from January 1 to March 15, 2020 in Guangdong Provincial, the models of Lognormal, Weibull and gamma distribution were applied. A descriptive analysis was conducted on the basic characteristics and epidemiological parameters of course of disease. Results: In total, 515 of 11 580 close contacts were infected, with an attack rate about 4.4%, including 449 confirmed cases and 66 asymptomatic cases. Lognormal distribution was fitting best for latent period, incubation period, pre-symptomatic infection period of confirmed cases and infection period of asymptomatic cases; Gamma distribution was fitting best for infectious period and clinical symptom period of confirmed cases; Weibull distribution was fitting best for latent period of asymptomatic cases. The latent period, incubation period, pre-symptomatic infection period, infectious period and clinical symptoms period of confirmed cases were 4.50 (95%CI:3.86-5.13) days, 5.12 (95%CI:4.63-5.62) days, 0.87 (95%CI:0.67-1.07) days, 11.89 (95%CI:9.81-13.98) days and 22.00 (95%CI:21.24-22.77) days, respectively. The latent period and infectious period of asymptomatic cases were 8.88 (95%CI:6.89-10.86) days and 6.18 (95%CI:1.89-10.47) days, respectively. Conclusion: The estimated course of COVID-19 and related epidemiological parameters are similar to the existing data.
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Affiliation(s)
- Y Zhou
- School of Public Health, Southern Medical University, Guangzhou 510515, China Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - W J Liang
- Institute of Immunization Programme, Guangdong Provincial Center for Disease Control and Prevention; Guangzhou 511430, China
| | - Z H Chen
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - T Liu
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - T Song
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - S W Chen
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - P Wang
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - J L Li
- Institute of Immunization Programme, Guangdong Provincial Center for Disease Control and Prevention; Guangzhou 511430, China
| | - Y H Lan
- Institute of Immunization Programme, Guangdong Provincial Center for Disease Control and Prevention; Guangzhou 511430, China
| | - M J Cheng
- Institute of Disinfection and Vector Control, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - J X Huang
- Institute of Environment and School Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - J W Niu
- Institute of Environment and School Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - J P Xiao
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - J X Hu
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - L F Lin
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - Q Huang
- Institute of Nutrition and Food Safety, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - A P Deng
- Institute of Infectious Disease Control and Prevention, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - X H Tan
- Institute of Infectious Disease Control and Prevention, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - M Kang
- Institute of Infectious Disease Control and Prevention, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - G M Chen
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - M R Dong
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - H J Zhong
- Public Health Emergency Preparedness and Response Division, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
| | - Wenjun Ma
- School of Public Health, Southern Medical University, Guangzhou 510515, China Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou 511430, China
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Liang WJ, Wang H, Chen X, Zhang TT, Bai YF, Feng F, Jin WJ. Ternary Cocrystals with Large Soft Cavities: A 1,4-diiodotetrafluorobenzene (DITFB)⋅4-Biphenylpyridine N-oxide (BPNO) Host Assembled by Inclusion of Planar Aromatic Guests. Chempluschem 2021; 86:252-258. [PMID: 33555637 DOI: 10.1002/cplu.202000779] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/27/2021] [Indexed: 11/10/2022]
Abstract
A large soft-cavity host composed of 1,4-diiodotetrafluorobenzene (DITFB) and 4-biphenylpyridine N-oxide (BPNO) is assembled under the mediation of a planar aromatic guest molecule (pyrene or perylene) through C-I⋅⋅⋅- O-N+ halogen bonds and π-hole⋅⋅⋅π bonds. Single-crystal X-ray diffraction reveals that guest molecules can be completely encapsulated in the four-layer host cavity to assemble ternary host-guest cocrystals; namely, Pyr@DITFB ⋅ BPNO and Per@DITFB ⋅ BPNO. The luminescence of these ternary cocrystals originates from their discrete guest molecules, which exhibit pure-blue and yellow emissions, respectively, that are localized at 425 nm and in the range of 485 to 578 nm, respectively. In addition, the contribution of different fragments to the stabilization of the crystal structure is estimated by computational chemistry. These cocrystals have significant potential for use in optical applications or materials, such as photonics or organic light-emitting diodes, respectively, that require to avoid the aggregation between luminophores.
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Affiliation(s)
- Wen Juan Liang
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, Shanxi, 037009, P. R. China
| | - Hui Wang
- College of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, 041004, P. R. China
| | - Xue Chen
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Ting Ting Zhang
- College of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, 041004, P. R. China
| | - Yun Feng Bai
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, Shanxi, 037009, P. R. China
| | - Feng Feng
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, Shanxi, 037009, P. R. China
| | - Wei Jun Jin
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, Shanxi, 037009, P. R. China.,College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
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Zhang HY, Sun N, Zhao CL, Liang WJ, Ye YW, Liu GH, Ding ZH, Zhao HC. [Comparison of different reconstruction procedures after distal gastrectomy in patients with gastric cancer]. Zhonghua Yi Xue Za Zhi 2020; 100:3884-3889. [PMID: 33371636 DOI: 10.3760/cma.j.cn112137-20200422-01279] [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 systematically compare the effect of Roux-en-Y with Billroth Ⅰ or Billroth Ⅱ in gastric cancer patients after distal gastrectomy by meta-analysis. Methods: Systematic search was conducted on the relevant electronic databases of Pubmed, Embase, Wanfang Database, CNKI and VIP from the established time to August 18, 2019. The randomized controlled trials about comparison of Roux-en-Y with Billroth Ⅰ or Billroth Ⅱ were strictly screened and analyzed by the software of Revman 5.3. Procedure and postoperative outcomes were analyzed, respectively. Results: A total of 783 relevant literatures were systematically retrieved, and 6 randomized controlled trials, including 954 patients, finally met the inclusion criteria after strict screening. The results of meta-analysis showed that operative time of Billroth Ⅰ was significantly shorter than that of Roux-en-Y (MD=-37.60, 95%CI:-50.79--24.40, P<0.001), intraoperative bleeding (MD=-21.64, 95%CI:-32.20--11.07, P<0.001) and the number of delayed gastric emptying (RR=0.52, 95%CI: 0.31-0.86, P=0.01) of Billroth Ⅰ were both significantly less than those of Roux-en-Y, while bile reflux (RR=8.17, 95%CI: 2.21-31.53, P=0.002) and residual gastritis (RR=1.75, 95%CI:1.43-2.14, P<0.000 01) of Billroth Ⅰ were both significantly higher than those of Roux-en-Y, other outcomes showed no significant difference. Compared with Roux-en-Y, operative time of Billroth Ⅱ was significantly shorter (MD=-19.73, 95%CI:-32.82--6.64, P=0.003), while bile reflux (RR=17.63, 95%CI: 4.50-69.02, P<0.001), residual gastritis (RR=1.94, 95%CI:1.15-3.26, P=0.01) and reflux esophagitis (RR=3.13, 95%CI: 1.31-7.45, P=0.01) of Billroth Ⅱ were all significantly higher, and there was no significant difference in other outcomes. Conclusion: Compared with Billroth Ⅰ and Billroth Ⅱ, the operation time of Roux-en-Y in gastric cancer patients undergoing distal gastrectomy is longer, but the incidences of bile reflux and residual gastritis are both lower, and the postoperative quality of life seems better.
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Affiliation(s)
- H Y Zhang
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - N Sun
- Department of Plastic Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - C L Zhao
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - W J Liang
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y W Ye
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - G H Liu
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Z H Ding
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - H C Zhao
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Liang WJ, Wu DQ, Lyu ZJ, Hu WX, Wang JJ, Zheng JB, Yan Q, Wu WL, Cai GF, Yao XQ, Li Y. [Application of indocyanine green fluorescence proctoscope in rectal cancer surgery]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:1104-1105. [PMID: 33212561 DOI: 10.3760/cma.j.cn.441530-20191030-00466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Lyu ZJ, Liang WJ, Wu DQ, Hu WX, Wang JJ, Zheng JB, Yan Q, Wu WL, Cai GF, Yao XQ, Li Y. [Safety and feasibility of indocyanine green injection through accessory incision in laparoscopic right hemicolectomy]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:791-794. [PMID: 32810952 DOI: 10.3760/cma.j.cn.441530-20190715-00274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Objective: To explore the safety and feasibility of indocyanine green (ICG) injection through accessory incision in laparoscopic right hemicolectomy. Methods: A descriptive case series study was carried out. Clinicopathological data of 29 patients with colon cancer undergoing right hemicolectomy at Department of General Surgery, Guangdong Provincial People's Hospital were retrospectively analyzed. All the patients received ICG injection through accessory incision at the beginning of operation. Results: Among 29 patients, 13 were male and 16 were female with a mean age of (60.8±7.7) years and mean body mass index of (24.3±2.8) kg/m(2); 3 were stage I, 19 were stage II, 7 were stage III. Pericolic, intermediate and main lymph nodes could be detected under near infrared fluorescence imaging (NIRFI) in all the cases. No.6 lymph nodes were observed in 3 cases, while no lymph nodes around superior mesenteric vein (SMV) were found. The average number of fluorescent lymph node was 14.2±6.1. The average developing time of fluorescence was (36.2±3.7) minutes. The average number of harvested lymph nodes was 22.4±8.2. There was no extravasation of imaging agent during the operation, and there were no intraoperative complications such as allergies, massive abdominal bleeding, peripheral organ damage, etc. Operative time was (113.1±10.7) minutes, blood loss during operation was (22.4±3.9) ml, ambulatory time was (1.2±0.4) days, time to the first flatus was (1.7±0.7) days, time to the first fluid diet was (0.7±0.4) days, and postoperative hospital stay was (5.8±1.5) days. No operation-associated complications such as anastomotic bleeding, anastomotic leakage, peritoneal bleeding, peritoneal infection, incision infection occurred after operation. Conclusion: ICG injection through accessory incision in laparoscopic right hemicolectomy is safe and feasible.
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Affiliation(s)
- Z J Lyu
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - W J Liang
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - D Q Wu
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - W X Hu
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - J J Wang
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - J B Zheng
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - Q Yan
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - W L Wu
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - G F Cai
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - X Q Yao
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - Y Li
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
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Lyu ZJ, Liang WJ, Lin ZB, Zhang GR, Wu DQ, Luo YW, Yan Q, Cai GF, Yao XQ, Li Y. [Current practice patterns of preoperative bowel preparation in elective colorectal surgery: a nation-wide survey of Chinese surgeons]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:578-583. [PMID: 32521978 DOI: 10.3760/cma.j.cn.441530-20190611-00238] [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 understand the current practice of preoperative bowel preparation in elective colorectal surgery in China. Methods: A cross-sectional questionnaire survey was conducted through wechat. The content of the questionnaire survey included professional title of the participants, the hospital class, dietary preparation and protocol, oral laxatives and specific types, oral antibiotics, gastric intubation, and mechanical enema before elective colorectal surgery. A stratified analysis based on hospital class was conducted to understand their current practice of preoperative bowel preparation in elective colorectal surgery. Result: A total of 600 questionnaires were issued, and 516 (86.00%) questionnaires of participants from different hospitals, engaged in colorectal surgery or general surgeons were recovered, of which 366 were from tertiary hospitals (70.93%) and 150 from secondary hospitals (29.07%). For diet preparation, the proportions of right hemicolic, left hemicolic and rectal surgery were 81.59% (421/516), 84.88% (438/516) and 84.88% (438/516) respectively. The average time of preoperative dietary preparation was 2.03 days. The study showed that 85.85% (443/516) of surgeons chose oral laxatives for bowel preparation in all colorectal surgery, while only 4.26% (22/516) of surgeons did not choose oral laxatives. For mechanical enema, the proportions of right hemicolic, left hemicolic and rectal surgery were 19.19% (99/516), 30.04% (155/516) and 32.75% (169/516) respectively. Preoperative oral antibiotics was used by 34.69% (179/516) of the respondents. 94.38% (487/516) of participants were satisfied with bowel preparation, and 55.43% (286/516) of participants believed that preoperative bowel preparation was well tolerated. In terms of preoperative oral laxatives, there was no statistically significant difference between different levels of hospitals [secondary hospitals vs. tertiary hospitals: 90.00% (135/150) vs. 84.15% (308/366), χ(2)=2.995, P=0.084]. Compared with the tertiary hospitals, the surgeons in the secondary hospitals accounted for higher proportions in diet preparation [87.33% (131/150) vs. 76.78% (281/366), χ(2)=7.369, P=0.007], gastric intubation [54.00% (81/150) vs. 36.33% (133/366), χ(2)=13.672, P<0.001], preoperative oral antibiotics [58.67% (88/150) vs. 24.86% (91/366), χ(2)=12.259, P<0.001] and enema [28.67% (43/150) vs. 15.30% (56/366), χ(2)=53.661, P<0.001]. Conclusion: Although the preoperative bowel preparation practice in elective colorectal surgery for most of surgeons in China is basically the same as the current international protocol, the proportions of mechanical enema and gastric intubation before surgery are still relatively high.
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Affiliation(s)
- Z J Lyu
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - W J Liang
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China; Medical College of Shantou University, Shantou, Guangdong 515000, China
| | - Z B Lin
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - G R Zhang
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - D Q Wu
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - Y W Luo
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - Q Yan
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - G F Cai
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - X Q Yao
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
| | - Y Li
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510060, China
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Lyu ZJ, Wu WL, Lin ZB, Liang WJ, Wang JJ, Zheng JB, Feng XY, Cai GF, Wu DQ, Li Y. [Feasibility and safety of the medial approach "four-step method" in the laparoscopic mobilization of splenic flexure]. Zhonghua Wei Chang Wai Ke Za Zhi 2019; 22:668-672. [PMID: 31302966 DOI: 10.3760/cma.j.issn.1671-0274.2019.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the feasibility and safety of the medial approach "four-step method" in the laparoscopic mobilization of splenic flexure. Methods: A retrospective cohort study was performed. Clinical data of 157 colorectal cancer patients undergoing the medial approach "four-step method" in the laparoscopic mobilization of splenic flexure at Gastrointestinal Surgical Department of Guangdong Provincial People's Hospital from July 2015 to June 2018 were retrospectively analyzed. Of 157 cases, 17 were transverse colon cancer, 94 were descending colon cancer, 25 were sigmoid cancer and 21 were rectal cancer; 89 were male and 68 were female; mean age was (61.8±10.3) years and mean body mass index was (23.2±3.7) kg/m(2). The medial approach "four-step method" in the laparoscopic mobilization of splenic flexure was performed as follows: (1) The root vessels were treated with the "provocation" technique to expand the Toldt's gap. This expansion was extended from the lateral side to the peritoneum reflex of left colonic sulcus, from the caudal side to the posterior rectal space, and from the cephalad side to the lower edge of pancreas. (2) The left colonic sulcus was mobilized, converging with the posterior Toldt's gap. Mobilization was carried out from cephalad side to descending colon flexure, freeing and cutting phrenicocolic ligament and splenocolic ligament, and from caudal side to peritoneal reflex. (3) Gastrocolic ligament was moblized. Whether to enter the great curvature of stomach omentum arch when the gastrocolic ligament was cut, that was, whether to clean the fourth group of lymph nodes, should be according to the tumor site and whether serosal layer was invaded. (4) Transverse mesocolon was moblized and transected at the lower edge of the pancreatic surface, merging with the posterior Toldt's gap, and from lateral side to lower edge of the pancreatic body, merging with the lateral left paracolonic sulcus. Safety and short-term clinical efficacy of this surgical procedure was summarized. Results: All the patients completed this procedure. During operation, 3 cases were complicated with organ injury, including 1 case of colon injury, 1 case of spleen injury and 1 case of pancreas injury. No operative death and conversion to open surgery was found. The average operation time was (147.5±35.1) minutes, the average intra-operative blood loss was (40.8±32.7) ml and the average number of harvested lymph node was (16.1±5.8), including (4.0±2.3) of positive lymph nodes. The first exhaust time after surgery was (41.3±20.6) hours, the fluid intake time was (1.5±1.3) days, the postoperative hospital stay was (5.2±2.3) days. Eight (5.1%) cases developed postoperative complications, and all were improved and discharged after conservative treatments. According to the TNM classification system, postoperative pathology revealed that 31 patients were stage I, 51 were stage II, 53 were stage III, 22 were stage IV. Conclusion: The medial approach "four-step method" is safe and feasible, which can effectively decrease the operation difficulty of the laparoscopic mobilization of the splenic flexure.
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Affiliation(s)
- Z J Lyu
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510060, China
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Liang WJ, Cui CC, Duan GC, Liu HY, Xu YK, Xi YL, Yang HY, Chen SY. [Identification and evaluation on methods with upstream flank sequences of CRISPR1, regarding Escherichia coli and Shigella]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:1607-1610. [PMID: 30572386 DOI: 10.3760/cma.j.issn.0254-6450.2018.12.013] [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: 06/09/2023]
Abstract
Objective: To analyze the effect of the identification and evaluation of Escherichia (E.) coli and Shigella, based on the upstream flanking sequences of CRISPR1. Methods: Both CRISPR and cas sequences were obtained through the BLAST with repeating sequences against the publicly complete genome in GenBank that related to E. coli and Shigella. Clustal X was used to perform multi-sequences alignment of the flanking sequences. PCR method was used to amplify the upstream flanking sequences of CRISPR1 in order to appraise the effect of identification and evaluation of upstream flanking sequences on E. coli and Shigella, which were based on the upstream flanking sequences of CRISPR1. Results: The results showed that 73.4% of the strains containing the I-E CRISPR/Cas that belonged to the phylogroups A, B1, D while 8.4% strains carried the I-F CRISPR/Cas. Another 17.2% of the strains owned CRISPR3-4 (non-CRISPR/Cas) only belonged to the phylogroups B2. All the Shigella strains carried I-E CRISPR/Cas. More than 99% of similarity the CRISPR1 upstream-flanking sequences was seen in E. coli (except B2) and Shigella and E. coli (B2). Both sensitivity and specificity were greater than 91% after PCR amplification in the region to identify the E.coli and Shigella. Conclusion: The upstream of CRISPR1 could achieve a preliminary identification effect on E.coli and Shigella.
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Affiliation(s)
- W J Liang
- Department of Epidemiology and Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, China; Henan Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang 453003, China
| | - C C Cui
- Department of Epidemiology and Statistics, School of Public Health, Xinxiang Medical University, Xinxiang 453003, China; Henan Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang 453003, China
| | - G C Duan
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China; Henan Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang 453003, China
| | - H Y Liu
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Y K Xu
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Y L Xi
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - H Y Yang
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - S Y Chen
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
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Abstract
OBJECTIVE To investigate the MR imaging diagnostic features of intracranial solitary fibrous tumors (ISFTs). MATERIALS AND METHODS Seven patients (mean age of 52.9 years; M:F=3:4) with histopathologically proven ISFTs were identified at our institute. Clinical presentations and pathological features were reviewed. MR Imaging findings including signal intensity, gadopentetate dimeglumine enhanced pattern, and diffusion-weighted imaging (DWI) characterization of the tumors were retrospectively evaluated. RESULTS Six tumors showed a multi-lobular contour. Five tumors showed heterogeneous signal intensity, and two tumors showed homogeneous signal intensity on T1WI. Low signal intensity linear, curved or interlacing lines were observed within the tumors in all seven cases. Seven tumors demonstrated moderate or strong enhancement, six showed heterogeneous enhancement, and one homogenous enhancement. All tumors showed heterogeneous signal intensity on DWI.A ring-like high signal intensity band distributed around within the tumor was noted in six cases on DWI. CONCLUSION Diagnostic evidence for ISFT on MR image includes heterogeneous signal intensity, intense enhancement of T2 signal intensity, low signal intensity lines within the tumor, heterogeneous signal intensity on DWI and a ring-like band around the tumor on DWI.
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Affiliation(s)
- Yongshan Liu
- Department of Radiology, Qingdao Haici Medical Group, 4 Renmin Road, Shibei District, Qingdao, Shandong Province 266033 China
| | - Qian Wang
- Department of Radiology, Qingdao Haici Medical Group, 4 Renmin Road, Shibei District, Qingdao, Shandong Province 266033 China
| | - Taijuan Zhang
- Department of Radiology, Qingdao Haici Medical Group, 4 Renmin Road, Shibei District, Qingdao, Shandong Province 266033 China
| | - Linlin Yang
- Department of Radiology, Qingdao Haici Medical Group, 4 Renmin Road, Shibei District, Qingdao, Shandong Province 266033 China
| | - Wen Juan Liang
- Department of Radiology, Qingdao Haici Medical Group, 4 Renmin Road, Shibei District, Qingdao, Shandong Province 266033 China
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Long JZ, Xu YK, Duan GC, Liang WJ, Liu HY, Chen SY, Xi YL, Wang PF, Wang YF. [Association between phage-mediated shiga toxin and molecular distribution of CRISPR in Escherichia coli O26 ∶ H11 or NM]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 38:944-949. [PMID: 28738471 DOI: 10.3760/cma.j.issn.0254-6450.2017.07.019] [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: 06/07/2023]
Abstract
Objective: To investigate the association between phage-mediated shiga toxin and molecular distribution of CRISPR in Escherichia (E.) coli O26∶H11 or NM. Methods: A total of 135 E. coli O26 ∶ H11 or NM strains were collected from NCBI database. Software CRT and CRISPR Finder were used to extract CRISPR and Excel was used to assign the spacer of unique number and type CRISPR. And the relationship between CRISPR and stx phage was analyzed. Results: All the 135 E. coli O26 ∶ H11 or NM strains had the CRISPR. For CRISPR1, CRISPR2.1, CRISPR2.2 and CRISPR3-4, 19, 22, 1 and 1 subtypes were found, respectively. According to the four CRISPR sites, the strains could be divided into 40 subtypes. Stx-phage was only observed in the group C of CRISPR. Compared with E. coli of stx-phage negative, E. coli with stx-phage harbored more spacers. Conclusions: CRISPR loci was extensively existed in E. coli O26∶H11 or NM, and many subtypes were found in these strains. The presence of stx-phage was related to the molecular distribution of CRISPR in E. coli O26∶H11 or NM. CRISPR might be a valuable biomarker to identify strains with high virulent potential.
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Affiliation(s)
- J Z Long
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Y K Xu
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - G C Duan
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China; Henan Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang 453003, China
| | - W J Liang
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China; Henan Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang 453003, China
| | - H Y Liu
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - S Y Chen
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Y L Xi
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - P F Wang
- University Health Service, Henan University of Science and Technology, Luoyang 471023, China
| | - Y F Wang
- Department of Preventive Medicine, Henan University of Science and Technology, Luoyang 471023, China
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Zhang B, Hong LJ, Duan GC, Liang WJ, Yang HY, Xi YL. [Changes of resistant phenotype and CRISPR/Cas system of four Shigella strains passaged for 90 times without antibiotics]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 38:235-239. [PMID: 28231673 DOI: 10.3760/cma.j.issn.0254-6450.2017.02.020] [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: 06/06/2023]
Abstract
Objective: To explore the stability of resistant phenotypes and changes of clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated (Cas) gene system on four Shigella strains in the absence of antibiotics. Methods: Four clinical isolated Shigella strains that resistant to different antibiotics were consecutive passaged for 90 times without antibiotics. Agar dilution method was used to determine the minimum inhibitory concentration of Shigella strains. After sequence analysis with PCR, CRISPR Finder and Clustal X 2.1 were applied to identify the changes of CRISPR loci in the Shigella strains. Results: After the consecutive transfer of 90 generations, sensitivity to certain antibiotics of four Shigella strains with different drug resistant spectrums increased. Mel-sf1998024/zz resistance to ampicillin, cephalexin, cefotaxime, chloramphenicol decreased, mel-s2014026/sx resistance to norfloxacin, trimethoprim decreased, mel-sf2004004/sx drug resistance to ampicillin, cefuroxime, cefotaxime, chloramphenicol, trimethoprim decreased and mel-sf2013004/bj resistance to chloramphenicol decreased. The spacer of which matched gene codes Cas and its upstream repeat in 3'end of CRISPR3 got lost in mel-sf1998024/zz and mel-sf2013004/bj. Conclusions:Shigella strains could reduce or lose their resistance to some antibiotics after consecutive transfers, without the interference of antibiotics. CRISPR3 locus had dynamic spacers in Shigella strains while CRISPR3 locus and cas genes might have been co-evolved.
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Affiliation(s)
- B Zhang
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - L J Hong
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - G C Duan
- Henan Innovition Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang 453003, China; Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - W J Liang
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - H Y Yang
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Y L Xi
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
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Zheng ZL, Deng HY, Wu CP, Lam WL, Kuok WS, Liang WJ, Wang HL. Secondhand smoke exposure of children at home and prevalence of parental smoking following implementation of the new tobacco control law in Macao. Public Health 2017; 144:57-63. [PMID: 28274385 DOI: 10.1016/j.puhe.2016.11.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 09/19/2016] [Accepted: 11/24/2016] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To investigate secondhand smoke exposure (SHS) of children at home and the prevalence of parental smoking after implementation of the new tobacco control law in Macao. This study explored whether the smoking ban in public places in Macao has decreased the prevalence of smoking or led to increased SHS exposure of children at home. As smokers cannot smoke in public places any more, they may smoke at home more frequently; a displacement effect of smoke-free legislation. STUDY DESIGN Cross-sectional survey. METHODS This study surveyed 337 fathers and 538 mothers. Questions from a subset of key questions from the Global Adult Tobacco Survey (2nd edition) were applied to assess the SHS exposure of children and the prevalence of parental smoking since the smoking ban. A classification tree analysis was used to analyse the factors increasing SHS exposure of children. RESULTS The prevalence of SHS exposure in children at home was 41.3%. The prevalence rates of paternal and maternal smoking were 43.7% and 3.8%, respectively. Compared with data reported by the Health Bureau of Macao SAR in 2011, the prevalence of parental smoking and the prevalence of SHS exposure of children at home have not decreased since the smoking ban. Analysis of the factors increasing the prevalence of SHS exposure of children indicated that fathers with an education level below high school were more likely to contribute to this increase, compared with fathers with a high school education or more (48.2% vs 32.4%, respectively). In addition, fathers represented the majority of smokers at home, accounting for 92.0% of 415 smoking parents. The prevalence of paternal smoking (82.0%) in the group of children with SHS exposure was much higher than that in the unexposed group (16.7%, Chi-squared test = 367.199, P = 0.000). The SHS exposure of children increased consistently with the decrease in paternal education level. This was consistent with the increasing prevalence of paternal smoking as paternal education level decreased. SHS exposure was most common among children whose fathers had an education level below high school and whose mothers were aged ≤29 years (75.0%). CONCLUSIONS This study did not find any decline in the prevalence of parental smoking after the smoking ban. These parents were more likely to smoke at home after the ban, leading to more frequent SHS exposure for their children.
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Affiliation(s)
- Z L Zheng
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, China
| | - H Y Deng
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, China
| | - C P Wu
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, China.
| | - W L Lam
- Health Bureau of Macao SAR, Macao, China
| | - W S Kuok
- Health Bureau of Macao SAR, Macao, China
| | - W J Liang
- Guangdong Provincial Centre for Disease Control and Prevention, Guangzhou, China
| | - H L Wang
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, China
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Liang WJ, Zhang RG, Duan GC, Hong LJ, Zhang B, Xi YL, Yang HY, Chen SY, Lou TY, Zhao YX. [A surveillance study on CRISPR/Cas molecular biomarker in Escherichia coli]. Zhonghua Liu Xing Bing Xue Za Zhi 2016; 37:1080-6. [PMID: 27539336 DOI: 10.3760/cma.j.issn.0254-6450.2016.08.005] [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 A new method related to molecular biomarker with CRISPR/Cas (clustered regularly interspaced short palindromic repeats-cas) in Escherichia (E.) coli was developed and used for surveillance programs. METHODS CRISPR/Cas sequence that containing 135 strains with complete sequence and 203 strains with whole genome shotgun sequence of E. coli in GenBank by BLAST and 361 strains of E. coli (including 38 strains of E. coli O157∶H7) in laboratory were identified by PCR and analyzed with the CRISPR Finder. Spacers were compared with DANMAN and the phylogenetic trees of cas gene were constructed under Clustal Ⅹ and Mega 5.1. RESULTS With new perspective, a descriptive method was developed targeting on the position of CRISPR/cas in E. coli. The CRISPR1 was detected in 77.04%, 100.00% and 75.62% and the CRISPR2 was detected in 74.81%, 100.00% and 92.24% and the CRISPR3 and CRISPR4 were detected in 11.85%, 0 and 1.39% for 135 strains with complete sequence, 203 strains with whole genome shotgun sequence and 361 strains in the laboratory, respectively. One strain downloaded in GenBank with whole genome sequencing and 2 strains in the our laboratory were identified that containing four CRISPR locus. The other E. coli strain was with insertion sequence in downstream of the non-cas CRISPR1. The unique CRISPR was found in 8 strains of O55∶H7, in 180 strains of O157∶H7, in 8 strains of O157∶HNM, in 40 strains of O104∶H4, in 4 strains of O145∶H28, in all the 699 E. coli strains. The phylogenetic tree could be divided into two groups-cas with type I-E or type I-F. CONCLUSIONS CRISPR/Cas might be used as a valuable molecular biomarker in epidemiological surveillance studies to identify the high virulent strains or new strains of E. coli. Phage night be related to the missing or obtaining of spacers.
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Affiliation(s)
- W J Liang
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China; Henan Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang 453003
| | - R G Zhang
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - G C Duan
- Henan Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang 453003; Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - L J Hong
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - B Zhang
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Y L Xi
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - H Y Yang
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - S Y Chen
- Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - T Y Lou
- Laboratory Department, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang 453100, China
| | - Y X Zhao
- Laboratory Department, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang 453003, China
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Bunten H, Liang WJ, Pounder DJ, Seneviratne C, Osselton D. Interindividual variability in the prevalence of OPRM1 and CYP2B6 gene variations may identify drug-susceptible populations. J Anal Toxicol 2012; 35:431-7. [PMID: 21871151 DOI: 10.1093/anatox/35.7.431] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Methadone is used worldwide for the treatment of heroin addiction; however, fatal poisonings are increasingly reported. The prevalence of CYP2B6 and μ-opioid receptor (OPRM1) gene variations were examined between a postmortem population where the deaths were associated with methadone and a live nondrug-using control population using Taqman™ SNP Genotyping assays. The CYP2B6*6 allele was higher in the postmortem population, but the difference was not significant (P = 0.92). The CYP2B6 T750C promoter variation was similar in frequency for both populations. Linkage between T750C and CYP2B6*6 was identified for both populations (P < 0.01). The prevalence of the OPRM1 A118G variation was significantly higher in the control population (P = 0.0046), which might indicate a protective mechanism against opioid toxicity. Individual susceptibility to methadone may be determined by screening for CYP2B6*6.
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Affiliation(s)
- H Bunten
- Centre for Forensic Sciences, Bournemouth University, Dorset, United Kingdom.
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Jiang HZ, Quan XF, Tian WX, Hu JM, Wang PC, Huang SZ, Cheng ZQ, Liang WJ, Zhou J, Ma XF, Zhao YX. Fatty acid synthase inhibitors of phenolic constituents isolated from Garcinia mangostana. Bioorg Med Chem Lett 2010; 20:6045-7. [DOI: 10.1016/j.bmcl.2010.08.061] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2010] [Revised: 08/11/2010] [Accepted: 08/12/2010] [Indexed: 11/25/2022]
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Bunten H, Liang WJ, Pounder DJ, Seneviratne C, Osselton D. OPRM1 and CYP2B6 gene variants as risk factors in methadone-related deaths. Clin Pharmacol Ther 2010; 88:383-9. [PMID: 20668445 DOI: 10.1038/clpt.2010.127] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Methadone is a medication valued for its effectiveness in the treatment of heroin addiction; however, many fatal poisonings associated with its use have been reported over the years. We have examined the association between CYP2B6 and micro-opioid receptor (OPRM1) gene variations and apparent susceptibility to methadone poisoning. Genomic DNA was extracted from postmortem whole blood of 40 individuals whose deaths were attributed to methadone poisoning. The presence of CYP2B6*4,*9, and *6 alleles and the OPRM1 A118G variant was determined by SNP genotyping. CYP2B6 *4, *9, and *6 alleles were found to be associated with higher postmortem methadone concentrations in blood (P < or = 0.05). OPRM1 A118G was also associated with higher postmortem methadone concentrations in blood but not to a level of statistical significance (P = 0.39). In these methadone-related deaths, OPRM1 118GA was associated with higher postmortem benzodiazepine concentrations (P = 0.04), a finding not associated with morphine-related deaths. The risk of a methadone-related fatality during treatment may be evaluated in part by screening for CYP2B6*6 and A118G.
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Affiliation(s)
- H Bunten
- Centre for Forensic Sciences, Bournemouth University, Dorset, UK.
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Li WJ, Liang WJ. Loss of characteristic absorption bands of C60 conjugation systems in the addition with aliphatic amines. Spectrochim Acta A Mol Biomol Spectrosc 2007; 67:1346-50. [PMID: 17113820 DOI: 10.1016/j.saa.2006.10.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2006] [Accepted: 10/12/2006] [Indexed: 05/12/2023]
Abstract
The characteristic absorption bands disappear and the shortest band at approximately 244 nm in cyclohexane or 282 nm in toluene remained only with long smoothing tail as C60 reacts adequately with aliphatic amines under sunlight radiation at approximately 40 degrees C. Simultaneously, fluorescence emission shifts from a weak band initially at longer wavelength to another strong one finally at shorter wavelength. The results might imply that the pi-conjugation system of C60 parent molecule is isolated into smaller separated parts. Therefore, some possible isolation models associated with observed experimental results are designed under some reasonable assumptive conditions.
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Affiliation(s)
- Wen Juan Li
- Department of Chemistry, Taiyuan Normal Institute, Taiyuan 030031, PR China.
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22
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Liang WJ, Wang Y, Feng F, Jin WJ. Novel self-protective phosphorescence from crystalline nanoparticles assembled by 3-bromo- and 3-iodo-carbazoles based on halogen–halogen interaction in suspension solutions. Anal Chim Acta 2006; 572:295-302. [PMID: 17723492 DOI: 10.1016/j.aca.2006.05.050] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2006] [Revised: 04/30/2006] [Accepted: 05/15/2006] [Indexed: 11/28/2022]
Abstract
The crystalline nanoparticles can be assembled by 3-bromo- and 3-iodo-carbazole (3-BrC and 3-IC) based on the halogen-halogen interaction in suspension aqueous solutions. As the colloid-like suspension was dropped onto film the particles further aggregate as rod-like structures with size of 3 microm in length and 1 microm in width. The halogen-halogen interaction are well proved by single crystal X-ray data, and the data reveal that each bromine atom interacts with the neighboring two, and each iodine atom interacts with the neighboring five and I-I interaction is stronger than that of Br-Br. Both 3-BrC and 3-IC can emit novel self-protective room temperature phosphorescence (RTP) in the range of 480 to near 800 nm at the excitation of 338 nm, and 3-BrC shows additionally the delayed fluorescence emission from 350 to 480 nm, both possessing the charge-transfer character caused by halogenations. RTP decay possesses the bi-exponential property and RTP lifetimes are 3.37, 31.16 ms (with ethanol) and 1.52, 30.83 ms (with THF) for 3-BrC or 3.53, 14.95 ms (with ethanol) and 1.68 ms, 13.74 ms (with THF) for 3-IC, showing " heavier atom ", I, makes intersystem crossing rate k(ISC) from both S1 to T1 and T1 to S(0) faster. For the results, the detection limits of 3-BrC and 3-IC can reach 2.4 x 10(-7) and 9.0 x 10(-8)mol L(-1), respectively, with wider linear range and higher precision compared with other systems.
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Affiliation(s)
- Wen Juan Liang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, PR China
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Abstract
Vitamin C is essential for many enzymatic reactions and also acts as a free radical scavenger. Specific non-overlapping transport proteins mediate the transport of the oxidized form of vitamin C, dehydroascorbic acid, and the reduced form, L-ascorbic acid, across biological membranes. Dehydroascorbic acid uptake is via the facilitated-diffusion glucose transporters, GLUT 1, 3 and 4, but under physiological conditions these transporters are unlikely to play a major role in the uptake of vitamin C due to the high concentrations of glucose that will effectively block influx. L-ascorbic acid enters cells via Na+-dependent systems, and two isoforms of these transporters (SVCT1 and SVCT2) have recently been cloned from humans and rats. Transport by both isoforms is stereospecific, with a pH optimum of approximately 7.5 and a Na+:ascorbic acid stoichiometry of 2:1. SVCT2 may exhibit a higher affinity for ascorbic acid than SVCT1 but with a lower maximum velocity. SVCT1 and SVCT2 are predicted to have 12 transmembrane domains, but they share no structural homology with other Na+ co-transporters. Potential sites for phosphorylation by protein kinase C exist on the cytoplasmic surface of both proteins, with an additional protein kinase A site in SVCT1. The two isoforms also differ in their tissue distribution: SVCT1 is present in epithelial tissues, whereas SVCT2 is present in most tissues with the exception of lung and skeletal muscle.
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Affiliation(s)
- W J Liang
- Research School of Biosciences, University of Kent, Canterbury, UK
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Ward A, O'Reilly J, Rutherford NG, Ferguson SM, Hoyle CK, Palmer SL, Clough JL, Venter H, Xie H, Litherland GJ, Martin GE, Wood JM, Roberts PE, Groves MA, Liang WJ, Steel A, McKeown BJ, Henderson PJ. Expression of prokaryotic membrane transport proteins in Escherichia coli. Biochem Soc Trans 1999; 27:893-9. [PMID: 10830123 DOI: 10.1042/bst0270893] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- A Ward
- School of Biochemistry and Molecular Biology, University of Leeds, U.K
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25
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Racher KI, Voegele RT, Marshall EV, Culham DE, Wood JM, Jung H, Bacon M, Cairns MT, Ferguson SM, Liang WJ, Henderson PJ, White G, Hallett FR. Purification and reconstitution of an osmosensor: transporter ProP of Escherichia coli senses and responds to osmotic shifts. Biochemistry 1999; 38:1676-84. [PMID: 10026245 DOI: 10.1021/bi981279n] [Citation(s) in RCA: 91] [Impact Index Per Article: 3.6] [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: 11/28/2022]
Abstract
The ProP protein of Escherichia coli is an osmoregulatory H+-compatible solute cotransporter. ProP is activated by an osmotic upshift in both whole cells and membrane vesicles. We are using biochemical and biophysical techniques to explore the osmosensory and catalytic mechanisms of ProP. We now report the purification and reconstitution of the active transporter. Protein purification was facilitated by the addition of six histidine (His) codons to the 3' end of proP. The recombinant gene was overexpressed from the E. coli galP promoter, and ProP-(His)6 was shown to be functionally equivalent to wild-type ProP by enzymatic assay of whole cells. ProP-(His)6, purified by Ni2+ (NTA) affinity chromatography, cross-reacted with antibodies raised against the ProP protein. ProP-(His)6 was reconstituted into Triton X-100 destabilized liposomes prepared with E. coli phospholipid. The reconstituted transporter mediated proline accumulation only if (1) a membrane potential was generated by valinomycin-mediated K+ efflux and (2) the proteoliposomes were subjected to an osmotic upshift (0.6 M sucrose). Activity was also stimulated by DeltapH. Pure ProP acts, in the proteoliposome environment, as sensor, transducer, and respondent to a hyperosmotic shift. It is the first such osmosensor to be isolated.
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Affiliation(s)
- K I Racher
- Department of Physics, University of Guelph, Ontario, Canada
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26
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Knol J, Veenhoff L, Liang WJ, Henderson PJ, Leblanc G, Poolman B. Unidirectional reconstitution into detergent-destabilized liposomes of the purified lactose transport system of Streptococcus thermophilus. J Biol Chem 1996; 271:15358-66. [PMID: 8662938 DOI: 10.1074/jbc.271.26.15358] [Citation(s) in RCA: 99] [Impact Index Per Article: 3.5] [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: 02/01/2023] Open
Abstract
The lactose transport protein (LacS) of Streptococcus thermophilus was amplified to levels as high as 8 and 30% of total membrane protein in Escherichia coli and S. thermophilus, respectively. In both organisms the protein was functional and the expression levels were highest with the streptococcal lacS promoter. Also a LacS deletion mutant, lacking the carboxyl-terminal regulatory domain, could be amplified to levels >20% of membrane protein. Membranes from S. thermophilus proved to be superior in terms of efficient solubilization and ease and extent of purification of LacS; >95% of LacS was solubilized with relatively low concentrations of Triton X-100, n-octyl-beta-D-glucoside, n-dodecyl-beta-D-maltoside, or C12E8. The LacS protein carrying a poly-histidine tag was purified in large quantities (approximately 5 mg/liter of culture) and with a purity >98% in a two-step process involving nickel chelate affinity and anion exchange chromatography. The membrane reconstitution of LacS was studied systematically by stepwise solubilization of preformed liposomes, prepared from E. coli phospholipid and phosphatidylcholine, and protein incorporation at the different stages of liposome solubilization. The detergents were removed by adsorption onto polystyrene beads and H+-lactose symport and lactose counterflow were measured. Highest transport activities were obtained when Triton X-100 was used throughout the solubilization/purification procedure, whereas activity was lost irreversibly with n-octyl-beta-D-glucoside. For reconstitutions mediated by n-dodecyl-beta-D-maltoside, C12E8, and to a lesser extent Triton X-100, the highest transport activities were obtained when the liposomes were titrated with low amounts of detergent (onset of liposome solubilization). Importantly, under these conditions proteoliposomes were obtained in which LacS was reconstituted in an inside-out orientation, as suggested by the outside labeling of a single cysteine mutant with a membrane impermeable biotin-maleimide. The results are consistent with a mechanism of reconstitution in which the hydrophilic regions of LacS prevent a random insertion of the protein into the membrane. Consistent with the in vivo lactose/galactose exchange catalyzed by the LacS protein, the maximal rate of lactose counterflow was almost 2 orders of magnitude higher than that of H+-lactose symport.
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Affiliation(s)
- J Knol
- Department of Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Kerklaan 30, 9751 NN Haren, The Netherlands
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Poolman B, Knol J, van der Does C, Henderson PJ, Liang WJ, Leblanc G, Pourcher T, Mus-Veteau I. Cation and sugar selectivity determinants in a novel family of transport proteins. Mol Microbiol 1996; 19:911-22. [PMID: 8830272 DOI: 10.1046/j.1365-2958.1996.397949.x] [Citation(s) in RCA: 138] [Impact Index Per Article: 4.9] [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: 02/02/2023]
Abstract
A new family of homologous membrane proteins that transport galactosides-pentoses-hexuronides (GPH) is described. By analysing the aligned amino acid sequences of the GPH family, and by exploiting their different specificities for cations and sugars, we have designed mutations that yield novel insights into the nature of ligand binding sites in membrane proteins. Mutants have been isolated/constructed in the melibiose transport proteins of Escherichia coli, Klebsiella pneumoniae and Salmonella typhimurium, and the lactose transport protein of Streptococcus thermophilus which facilitate uncoupled transport or have an altered cation and/or substrate specificity. Most of the mutations map in the amino-terminal region, in or near amphipathic alpha-helices II and IV, or in interhelix-loop 10-11 of the transport proteins. On the basis of the kinetic properties of these mutants, and the primary and secondary structure analyses presented here, we speculate on the cation binding pocket of this family of transporters. The regulation of the transporters through interaction with, or phosphorylation by, components of the phosphoenolpyruvate:sugar phosphotransferase system is also discussed.
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Affiliation(s)
- B Poolman
- Department of Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Haren, The Netherlands
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Liu KM, Chuang YH, Liang WJ, Chang CC. Non-uniform nervous components in the optic nerve of one Formosan rock-monkey (Macaca cyclopis)--a light microscopic study. Gaoxiong Yi Xue Ke Xue Za Zhi 1986; 2:256-64. [PMID: 3482891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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