1
|
Li GM, Gu WP, Hou M, Jia SQ, Wang YY, Bai LL, Yin JW, Zhou YM, Fu XQ, Lu JX, Wu Y. [Study on the features of Clostridioides difficile infection among diarrhea patients in Kunming from 2018 to 2020]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:624-628. [PMID: 37147836 DOI: 10.3760/cma.j.cn112338-20220712-00624] [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: 05/07/2023]
Abstract
Objective: We analyze the characteristics of Clostridioides difficile (C. difficile) infection among diarrhea patients in Kunming from 2018 to 2020 and provide evidence for follow-up surveillance and prevention. Methods: A total of 388 fecal samples of diarrhea patients from four sentinel hospitals in Yunnan Province from 2018 to 2020 were collected. Real-time quantitative PCR was used to detect the fecal toxin genes of C. difficile. The positive fecal samples isolated the bacteria, and isolates were identified by mass spectrometry. The genomic DNA of the strains was extracted for multi-locus sequence typing (MLST). The fecal toxin, strain isolation, and clinical patient characteristics, including co-infection with other pathogens, were analyzed. Results: Among the 388 fecal samples, 47 samples with positive reference genes of C. difficile were positive, with a total positive rate of 12.11%. There were 4 (8.51%) non-toxigenic and 43 (91.49%) toxigenic ones. A total of 18 strains C. difficile were isolated from 47 positive specimens, and the isolation rate of positive specimens was 38.30%. Among them, 14 strains were positive for tcdA, tcdB, tcdC, tcdR, and tcdE. All 18 strains of C. difficile were negative for binary toxins. The MLST results showed 10 sequence types (ST), including 5 strains of ST37, accounting for 27.78%; 2 strains of ST129, ST3, ST54, and ST2, respectively; and 1 strain of ST35, ST532, ST48, ST27, and ST39, respectively. Fecal toxin gene positive (tcdB+) results were statistically associated with the patient's age group and with or without fever before the visit; positive isolates were only statistically associated with the patient's age group. In addition, some C. difficile patients have co-infection with other diarrhea-related viruses. Conclusions: The infection of C. difficile in diarrhea patients in Kunming is mostly toxigenic strains, and the high diversity of strains was identified using the MLST method. Therefore, the surveillance and prevention of C. difficile should be strengthened.
Collapse
Affiliation(s)
- G M Li
- Microbiology Testing Department, Kunming Center for Disease Control and Prevention, Kunming 650228, China
| | - W P Gu
- Division of Acute Infectious Diseases, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - M Hou
- Microbiology Testing Department, Kunming Center for Disease Control and Prevention, Kunming 650228, China
| | - S Q Jia
- Division of Acute Infectious Diseases, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - Y Y Wang
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - L L Bai
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J W Yin
- Division of Acute Infectious Diseases, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - Y M Zhou
- Division of Acute Infectious Diseases, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - X Q Fu
- Division of Acute Infectious Diseases, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - J X Lu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Wu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| |
Collapse
|
2
|
Zheng HR, Wang YY, Bai LL, Zhong JX, Lu JX, Wu Y, Deng HL. [Establishment of PCR assays and genetic polymorphism analysis of genes encoding Clostridium perfringens β 2 toxin from different sources]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:636-642. [PMID: 37147838 DOI: 10.3760/cma.j.cn112338-20220819-00718] [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: 05/07/2023]
Abstract
Objective: To establish and optimize PCR methods for the gene encoding of Clostridium perfringens β2 toxin (cpb2) and atypical-cpb2 (aty-cpb2), analyze the epidemiological characteristics and genetic polymorphism of the cpb2 of Clostridium perfringens in 9 Chinese areas from 2016 to 2021. Methods: The cpb2 of 188 Clostridium perfringens strains were examined by PCR; the cpb2 sequences were acquired by whole-genome sequencing to analyze the genetic polymorphism. Using Mega 11 and the Makeblastdb tool, a phylogenetic tree, and cpb2-library based on 110 strains carrying the cpb2 were produced. Using the Blastn technique, a comparison was made to discover sequence similarity between consensus-cpb2 (con-cpb2) and aty-cpb2. Results: The specificity of PCR assay for the cpb2 and aty-cpb2 was verified. The PCR results for cpb2 amplification were highly consistent with the whole-genome sequencing approach (Kappa=0.946, P<0.001). A total of 107 strains from nine regions in China carried cpb2, 94 types A strains carried aty-cpb2, 6 types A strains carried con-cpb2, and 7 types F strains carried aty-cpb2. The nucleotide sequence similarity between the two coding genes was 68.97%-70.97%, and the similarity between the same coding genes was 98.00%-100.00%. Conclusions: In this study, a specific PCR method for cpb2 toxin was developed, and the previous PCR method for detecting aty-cpb2 was improved. aty-cpb2 is the primary gene encoding of β2 toxin. There is a significant nucleotide sequence variance between the various cpb2 genotypes.
Collapse
Affiliation(s)
- H R Zheng
- Shaanxi University of Traditional Chinese Medicine, Xi'an 712046, China National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Y Wang
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - L L Bai
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J X Zhong
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J X Lu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Wu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H L Deng
- Xi'an Central Hospital, Xi'an 710003, China
| |
Collapse
|
3
|
Jia XX, Lu JX, Tang XJ, Fan YF, Gao YS. A new method for molecular sex identification in the emu ( Dromaius novaehollandiae). Br Poult Sci 2023:1-6. [PMID: 36607349 DOI: 10.1080/00071668.2022.2163876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
1. Sex chromosomes of emus are largely homomorphic. Therefore, the standard methodology for molecular sexing is based on screening intron length variations in sex-linked genes is not applicable. However, emu sexing requires costly and time-consuming PCR-RFLP or multiplex PCR methods.2. This experiment used a directed PCR amplification and capillary electrophoresis sexing protocol. Two distinct peaks were observed in females (ZW), while only one peak was observed in males (ZZ).3. This sexing technique proved to be rapid, non-invasive, and highly sensitive and may be useful for verifying the sex ratio and breeding management of emus.
Collapse
Affiliation(s)
- X X Jia
- Jiangsu institute of Poultry Science, Yangzhou, Jiangsu, PR China
| | - J X Lu
- Jiangsu institute of Poultry Science, Yangzhou, Jiangsu, PR China
| | - X J Tang
- Jiangsu institute of Poultry Science, Yangzhou, Jiangsu, PR China
| | - Y F Fan
- Jiangsu institute of Poultry Science, Yangzhou, Jiangsu, PR China
| | - Y S Gao
- Jiangsu institute of Poultry Science, Yangzhou, Jiangsu, PR China
| |
Collapse
|
4
|
Zheng HR, Bai LL, Wang YY, Zhong JX, Lu JX, Deng HL, Xie Q, Wu Y. [Progress in research of Clostridium perfringens toxin]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1860-1868. [PMID: 36444474 DOI: 10.3760/cma.j.cn112338-20220316-00189] [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: 06/16/2023]
Abstract
Clostridium perfringens can produce many kinds of toxins and hydrolase, causing gas gangrene, enteritis and enterotoxemia in both human and animals. It is known that C. perfringens can produce more than 20 toxins and hydrolases. The different toxin types are associated with specific disease types. At present, molecular toxin-typing method by PCR has replaced the traditional serological typing method. In this study, we systematically summarize the types, basic characteristics, pathogenic mechanism and the relationship with disease of C. perfringens toxins to provide evidence for the establishment of rapid detection method, immune antigen screening, antibody preparation and research of related pathogenic mechanism.
Collapse
Affiliation(s)
- H R Zheng
- Shaanxi University of Traditional Chinese Medicine, Xi'an 712046, China National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - L L Bai
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Y Wang
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J X Zhong
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J X Lu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H L Deng
- Xi'an Central Hospital, Xi'an 710003, China
| | - Q Xie
- School of Public Health, Xiangnan University, Chenzhou 423000, China
| | - Y Wu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| |
Collapse
|
5
|
Chen X, Li J, Huo R, Zhang YF, Wang HT, Che J, Lu JX. [Exploration on the construction of analysis indicators system for antibiotic resistance monitoring]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:700-705. [PMID: 34814454 DOI: 10.3760/cma.j.cn112338-20200729-00990] [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: 06/13/2023]
Abstract
Antibiotic resistance (AR) is a severe and fast-growing public health challenge with rapid globalization, especially in China. Although some monitoring systems were established in different fields, fragmentation of information failed to show the overall trend and spread of AR. It is necessary to establish a national monitoring system to reveal the occurrence, development, and spread of AR. The new AR monitoring system needs an updated analysis indicators system. We intend to recommend a new analysis indicators system for AR was constructed and applied to AR data monitoring and analysis for humans, animals, the environment, and foods. After investigating and analyzing the 5 Chinese major AR monitoring systems and literature, we have formulated 15 AR monitoring analysis indicators and initially established an evaluation system for the country's new AR monitoring system.
Collapse
Affiliation(s)
- X Chen
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J Li
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - R Huo
- Hangzhou Xinglin Information Technology Co., LTD, Hangzhou 310052, China
| | - Y F Zhang
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H T Wang
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J Che
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J X Lu
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| |
Collapse
|
6
|
Wu Y, Lu JX, Yan ZZ, Liu YX, Gu WP, Fu XQ, Xu YC, Wu AH, Huang HH, Zong ZY, Jin DZ, Zhao JH, Chen Y, Liu WP, Li WG. [Interpretation of group standard for Clostridioides difficile infection diagnosis]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:64-67. [PMID: 33503698 DOI: 10.3760/cma.j.cn112338-20201026-01272] [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: 06/12/2023]
Abstract
Clostridioides difficile is a key pathogen of antibiotic related diarrhea and hospital associated infection, causing several outbreaks in Europe and North Americans and resulting in severe disease burden. However, the standardized diagnostic principle and detection specifications in C. difficile infection (CDI) survey are limited in China, and the infection rate and disease burden of CDI in China are unclear. Therefore, National Institute for Communicable Disease Control and Prevention,National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, together with another 11 institutions, draft the group standard entitled "Diagnosis of Clostridium difficile infection (T/CPMA 008-2020)" of Chinese Preventive Medicine Association. Based on the principle of "legality, scientificity, advancement, and feasibility", this standard clarifies risk factors, diagnosis principles, diagnoses and differential diagnoses in order to improve the accuracy of CDI diagnosis in clinical practice, guide the surveillance for CDI, and understand the infection rate and disease burden of CDI in China.
Collapse
Affiliation(s)
- Y Wu
- National Institute for Communicable Disease Control and Prevention, Chines Center for Disease Control and Prevention, Beijing 102206, China
| | - J X Lu
- National Institute for Communicable Disease Control and Prevention, Chines Center for Disease Control and Prevention, Beijing 102206, China
| | - Z Z Yan
- Chinese People' s Liberation Army General Hospital, Beijing 100853, China
| | - Y X Liu
- Chinese People' s Liberation Army General Hospital, Beijing 100853, China
| | - W P Gu
- Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - X Q Fu
- Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - Y C Xu
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730,China
| | - A H Wu
- Xiangya Hospital of Central South University, Changsha 410008, China
| | - H H Huang
- Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Z Y Zong
- West China Hospital, Sichuan University, Chengdu 610041,China
| | - D Z Jin
- Hangzhou Medical College, Hangzhou 310053, China
| | - J H Zhao
- The Second Hospital of Hebei Medical University, Shijiazhuang 050061, China
| | - Y Chen
- Southern Hospital of Southern Medical University, Guangzhou 510515, China
| | - W P Liu
- Inner Mongolia Autonomous Region People' s Hospital, Hohhot 010017, China
| | - W G Li
- Shandong Provincial Hospital, Ji'nan 250021, China
| |
Collapse
|
7
|
Zhang X, Zhang WZ, Li WW, Zhao HQ, Wu YH, Li H, Liu ZJ, Wu Y, Lu JX. [Standardization and application on ribotyping library of Clostridioides difficile in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 40:1624-1628. [PMID: 32062927 DOI: 10.3760/cma.j.issn.0254-6450.2019.12.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To establish a standard operation procedure (SOP) for ribosome genotyping (ribotyping) on Clostridioides (C.) difficile, supplement and verify ribotyping typing library, so as to improve the comparability of data between different laboratories and to develop surveillance network of C. difficil in China. Methods: Molecular typing of 54 reference strains from the United States and Europe of C. difficile were performed by using the SOP referencing correspondence from abroad and from our laboratory with a BioNumerics 7.6 software to estimate the reference library of types of C. difficile. Identification of 374 clinical and animal isolates of C. difficile from 13 cities in China between 2010 and 2018, to supplement the library information. Kappa test was used to evaluate the consistency. Results: Results of capillary electrophoresis of reference strains appeared clear and stable, which guaranteed the clustering results being fast and accurate. Results from the supplementary typing showed that there were 84 types of isolates, of which 25 RT types were consistent with reference strains from abroad, while 58 RT types were different from referenced types. In the 40 referenced types, 15 RT types were not found in this study. In the consistency evaluation, the Kappa value was 0.891 and (P<0.01), showing the two Molecular typing as consistent and with close resemblance. Conclusions: The result of capillary electrophoresis by applying SOP for ribotyping on C. difficile base on QIAxcel capillary electrophoresis system, appeared clear and stable. The standardized library seemed more easily used for comparability and data sharing between the laboratories.
Collapse
Affiliation(s)
- X Zhang
- Class 1 Grade 2015 College, Lab Medicine, Hebei North University, Zhangjiakou 075000, China; State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - W Z Zhang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - W W Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H Q Zhao
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y H Wu
- Department of Prevention College of Laboratory Medicine, Hebei North University, Zhangjiakou 075000, China
| | - H Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; Aksu Regional Center for Disease Control and Prevention of Xinjiang Uygur Autonomous Region, Aksu 843000, China
| | - Z J Liu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Wu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J X Lu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| |
Collapse
|
8
|
Lu JX, Pan H, Hu XQ, Huang ZW, Zhang Q. Effects of milk powder intervention on bone mineral density and indicators related to bone metabolism in Chinese adolescents. Osteoporos Int 2019; 30:2231-2239. [PMID: 31375874 PMCID: PMC6811668 DOI: 10.1007/s00198-019-05105-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 07/21/2019] [Indexed: 02/07/2023]
Abstract
UNLABELLED The study is to determine the effects of milk powder on bone density and metabolism in healthy adolescents. Vitamin D and calcium supplements increased IGF-1 but did not affect bone mineralization or turnover. Higher vitamin D in combination with sufficient calcium supplementation in such populations requires attention. INTRODUCTION Both calcium and vitamin D play an important role in bone mineralization in adolescents. METHODS In this one and a half-year randomized controlled trial, 232 participants (aged 12-15 years) were randomly assigned to three intervention groups receiving milk powder fortified with vitamin D 400 IU plus calcium 300, or 600, or 900 mg [Ca3D (n = 54), Ca6D (n = 56), and Ca9D (n = 49)], or one control group maintaining habitual diet [control (n = 73)]. Bone turnover markers, serum intact PTH, 25(OH)D, and IGF-1 levels were measured at baseline and one and a half years, and bone mineral contents and bone areal mineral density were measured by Dual-energy X-ray absorptiometry (DXA) at baseline, one year, and one and a half years. RESULTS Baseline average serum 25(OH)D level and calcium intake were 29.4 nmol/L and 363.5 mg/day, respectively. There was a significant increase in bone turnover, total body, hip, lumbar spine bone mineral density (BMD), and total body BMC as well as slight fluctuations in 25(OH)D levels over one and a half years without between-group differences. Significantly decreased serum PTH level was only observed in the Ca6D group (31%, p < 0.0001), in which the intervention effect was also significant (p = 0.0029) compared with the control group. IGF-1 levels increased significantly in all intervention groups (18.5 to 22.8%, p < 0.05) but decreased in the control group (16.5%, p < 0.05), and the group by time interaction was also significant (p = 0.0029). CONCLUSIONS Our study showed that in healthy adolescents with low vitamin D status and calcium intake, mild vitamin D and mild to modest calcium supplements increased IGF-1 but did not affect bone mineralization or turnover. Higher vitamin D in combination with sufficient calcium supplementation in such populations requires attention.
Collapse
Affiliation(s)
- J X Lu
- National Institute of Nutrition and Health, Chinese Center for Disease Control and Prevention, 29 Nan Wei Road, Xi Cheng District, Beijing, 100050, China
| | - H Pan
- National Institute of Nutrition and Health, Chinese Center for Disease Control and Prevention, 29 Nan Wei Road, Xi Cheng District, Beijing, 100050, China
| | - X Q Hu
- National Institute of Nutrition and Health, Chinese Center for Disease Control and Prevention, 29 Nan Wei Road, Xi Cheng District, Beijing, 100050, China
| | - Z W Huang
- National Institute of Nutrition and Health, Chinese Center for Disease Control and Prevention, 29 Nan Wei Road, Xi Cheng District, Beijing, 100050, China
| | - Q Zhang
- National Institute of Nutrition and Health, Chinese Center for Disease Control and Prevention, 29 Nan Wei Road, Xi Cheng District, Beijing, 100050, China.
| |
Collapse
|
9
|
Feng L, Li J, Yao MJ, Sun NL, Xu JN, Su C, Lu JX, Lei SW. [Interpretation of policies for group standards and the practice of group standardizations in Chinese Preventive Medicine Association]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:371-375. [PMID: 31006193 DOI: 10.3760/cma.j.issn.0254-6450.2019.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Recent years, national laws and government policies were published as series to encourage the development of group standardizations. The updated Standardization Law of the People's Republic of China, implemented on January 1(st), 2018, stipulates that group standard is a part of the Chinese standard system. Under the current supportive circumstances, more institutes and organizations have joined in the writing and releasing procedures of group standards'. Despite the rapid development of group standardization to publish, we are still at the phase of exploring and regulating group standardizations. This review summarizes the development and practice on the development group standardization in the Chinese Preventive Medicine Association and analyzes current condition and deficiency of the work in China, in order to develop suggestions and strategies to improve and regulate group standardization.
Collapse
Affiliation(s)
- L Feng
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; Standardization Committee, Chinese Preventive Medicine Association, Beijing 100021, China
| | - J Li
- Standardization Committee, Chinese Preventive Medicine Association, Beijing 100021, China; Beijing Center for Diseases Prevention and Control, Beijing 100013, China
| | - M J Yao
- Standardization Committee, Chinese Preventive Medicine Association, Beijing 100021, China; Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - N L Sun
- Standardization Committee, Chinese Preventive Medicine Association, Beijing 100021, China; Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J N Xu
- Standardization Committee, Chinese Preventive Medicine Association, Beijing 100021, China; Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - C Su
- Standardization Committee, Chinese Preventive Medicine Association, Beijing 100021, China; National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - J X Lu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - S W Lei
- Standardization Committee, Chinese Preventive Medicine Association, Beijing 100021, China; Chinese Center for Disease Control and Prevention, Beijing 102206, China
| |
Collapse
|
10
|
Du Z, Zhang J, Lu JX, Lu LP. [Association between distribution of bacillary dysentery and meteorological factors in Beijing, 2004-2015]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:656-660. [PMID: 29860812 DOI: 10.3760/cma.j.issn.0254-6450.2018.05.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the distribution characteristics of bacillary dysentery in Beijing during 2004-2015 and evaluate the influence of meteorological factors on the temporal and spatial distribution of bacillary dysentery. Methods: The incidence data of bacterial dysentery and meteorological data in Beijing from 2004 to 2015 were collected. Descriptive epidemiological analysis was conducted to study the distribution characteristics of bacterial dysentery. Linear correlation analysis and multiple linear regression analysis were carried out to investigate the relationship between the incidence of bacillary dysentery and average precipitation, average air temperature, sunshine hours, average wind speed, average air pressure, gale and rain days. Results: A total of 280 704 cases of bacterial dysentery, including 36 deaths, were reported from 2004 to 2015 in Beijing, the average annual incidence was 130.15/100 000. The annual incidence peak was mainly between May and October, the cases occurred during this period accounted for 80.75% of the total, and the incidence was highest in age group 0 year. The population distribution showed that most cases were children outside child care settings and students, and the sex ratio of the cases was 1.22∶1. The reported incidence of bacillary dysentery was positively associated with average precipitation, average air temperature and rain days with the correlation coefficients of 0.931, 0.878 and 0.888, but it was negatively associated with the average pressure, the correlation coefficient was -0.820. Multiple linear regression equation for fitting analysis of bacillary dysentery and meteorological factors was Y=3.792+0.162X(1). Conclusion: The reported incidence of bacillary dysentery in Beijing was much higher than national level. The annual incidence peak was during July to August, and the average precipitation was an important meteorological factor influencing the incidence of bacillary dysentery.
Collapse
Affiliation(s)
- Z Du
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | | | | | | |
Collapse
|
11
|
Jia XX, Lu JX, Tang XJ, Fan YF, Huang SH, Ge QL, Gao YS. Genetic diversity of Jiangsu native chicken breeds assessed with the mitochondrial DNA D-loop region. Br Poult Sci 2017; 59:34-39. [PMID: 29053378 DOI: 10.1080/00071668.2017.1395391] [Citation(s) in RCA: 5] [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] [Indexed: 10/18/2022]
Abstract
1. The objective of this study was to determine the origin and evolution of chickens from 5 native breeds that are traditionally raised in Jiangsu Province. 2. To address this question, the complete mitochondrial DNA D-loop sequence of 149 chickens from 5 native breeds of Jiangsu Province was analysed. 3. Sequence read lengths of the native breeds were 1231 to 1232 bp, with a single-base deletion from the 859 bp site in the 1231 bp haplotype. A total of 33 variable sites that defined 19 haplotypes were identified. The average haplotype diversity and nucleotide diversity were 0.862 ± 0.017 and 0.00591 ± 0.00135. 4. Phylogenetic analysis showed that genetic structure of the mtDNA haplotypes of Jiangsu chickens are distributed across 5 clades (haplogroups): Clades A, B, C, D, and E. However, most of the individuals characterised in this study belonged to clades A and B. 5. The results of this study indicate that Jiangsu chicken populations have relatively low nucleotide and haplotype diversity and likely share 5 common maternal lineages.
Collapse
Affiliation(s)
- X X Jia
- a Quality & Safety Department , Jiangsu institute of Poultry Science , Yangzhou , China
| | - J X Lu
- a Quality & Safety Department , Jiangsu institute of Poultry Science , Yangzhou , China
| | - X J Tang
- a Quality & Safety Department , Jiangsu institute of Poultry Science , Yangzhou , China
| | - Y F Fan
- a Quality & Safety Department , Jiangsu institute of Poultry Science , Yangzhou , China
| | - S H Huang
- a Quality & Safety Department , Jiangsu institute of Poultry Science , Yangzhou , China
| | - Q L Ge
- a Quality & Safety Department , Jiangsu institute of Poultry Science , Yangzhou , China
| | - Y S Gao
- a Quality & Safety Department , Jiangsu institute of Poultry Science , Yangzhou , China
| |
Collapse
|
12
|
Lu JX, Liu XB, Chen J, Hu YC, Yun CF, Li WD, Wang R, Yang YH, Mao DQ, Piao JH, Yang XG, Yang LC. [The vitamin D nutritional status in Chinese urban women of child-bearing age from 2010 to 2012]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 51:112-116. [PMID: 28219147 DOI: 10.3760/cma.j.issn.0253-9624.2017.02.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the vitamin D nutritional status in Chinese women of child-bearing age by analyzing serum 25-hydroxyvitamin D level in 2010-2012. Methods: Data were obtained from the China Nutrition and Health Survey in 2010-2012. Using cluster sampling and proportional stratified random sampling, 1 514 women of child-bearing age (18-44 years old) from 34 metropolis and 41 small and medium-sized cities were included in this study. Demographic information was collected by questionnaire and serum 25-hydroxyvitamin D concentration was determined by radioimmunoassay, in accordance with the 2010 Institute of Medicine of the National Academies standards. We compared differences in vitamin D levels, specifically serious deficiency, lack of deficiency, insufficiency, and excess. Results: The overall serum 25-hydroxyvitamin D level of Chinese urban women of child-bearing age (P(50) (P(25)-P(75))) was 20.1 (15.1-26.3) ng/ml; minorities had a significantly higher serum 25-hydroxyvitamin D level of 22.0 (15.9-27.5) ng/ml compared with women of Han nationality (19.8 (14.9-26.2) ng/ml) (χ(2)=7.02, P=0.008). The proportions of women with serious deficiency, lack of deficiency, insufficiency, and excess vitamin D were 11.6% (n=175), 37.9% (n=574), 35.1% (n=531), and 0.3% (n=5), respectively. Only 15.1% (n=229) of women of child-bearing age had normal vitamin D nutritional status. No significant differences in vitamin D nutritional status were observed according to age, body mass index, city, nationality, educational level, marital status, or household income per capita (P>0.05). Conclusion: Most Chinese urban women of child-bearing age have poor vitamin D levels and require vitamin D supplementation.
Collapse
Affiliation(s)
- J X Lu
- National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention; Key Laboratory of Trace Element Nutrition, National Health and Family Planning Commission, Beijing 100050, China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Ma HY, Ma CY, Zhu JJ, Ren GJ, Wang W, Chen W, Lu JX, Ma LB. Characterization of the complete mitochondrial genome and phylogenetic relationships of the three-spot swimming crab (Portunus sanguinolentus). Genet Mol Res 2016; 15:gmr8580. [PMID: 27706654 DOI: 10.4238/gmr.15038580] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this study, we determined the whole mitochondrial genome profile of the three-spot swimming crab (Portunus sanguinolentus) and elucidated phylogenetic relationships between representative species in the order Decapoda. The mitochondrial genome was 16,024 bp in length and consisted of 13 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes, and a putative control region. Of the 37 genes, 23 were encoded by the heavy strand while 14 were encoded by the light strand. Four types of start codons were identified; ATG initiated nine genes, ATT initiated two genes, and ATC and GTG each started one gene. Nine protein-coding genes ended with a complete TAA or TAG stop codon, and four genes ended with an incomplete T or TA codon. Fourteen non-coding regions were found, which ranged from 1 to 34 bp in length. Nine overlaps were observed, with lengths between 1 and 7 bp. Phylogenetic analysis suggested that P. sanguinolentus is genetically closest to P. trituberculatus and P. pelagicus. Charybdis feriata, C. japonica, and Thalamita crenata formed a single cluster, and were close to the genera Callinectes and Portunus. Therefore, the genera Charybdis and Thalamita should be classified into the subfamily Portuninae.
Collapse
Affiliation(s)
- H Y Ma
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China .,Guandong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou, China
| | - C Y Ma
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - J J Zhu
- Guangxi Academy of Fishery Sciences, Nanning, China
| | - G J Ren
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - W Wang
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - W Chen
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - J X Lu
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - L B Ma
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| |
Collapse
|
14
|
Ma CY, Ma HY, Ren GJ, Wang W, Chen W, Lu JX, Zou X, Ma LB. Characterization of the complete mitochondrial genome of Portunus pelagicus with implications for phylogenomics. Genet Mol Res 2016; 15:gmr8719. [PMID: 27706563 DOI: 10.4238/gmr.15038719] [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
This study determined the mitochondrial genome structure of the blue swimming crab (Portunus pelagicus), and elucidated its phylogenetic relationships among the species within the order Decapoda. The complete mitochondrial genome was 16,155 bp long, and contained 13 protein-coding genes, 22 transfer RNA genes, 2 ribosomal RNA genes, and 1 DNA control region. The gene order of the genome was the same as that found within the family Portunidae. Twenty-three genes were on the heavy strand and 14 were on the light strand. Almost all of the protein-coding genes were initiated by an ATG codon, except for three genes (ATP6, ND1, and ND3) that started with a rare ATT codon. Of the 13 protein-coding genes, 10 ended with complete TAA or TAG stop codons and three ended with an incomplete T codon. Thirteen non-coding regions were identified that ranged from 1 to 30 bp in length. Nine overlaps were found, which ranged 1 to 7 bp in length. Phylogenetic analyses based on 12 concatenated protein-coding genes revealed that P. pelagicus formed a monophyletic group with Portunus trituberculatus, which were in a larger group with Callinectes sapidus, while the genera Charybdis and Thalamita formed another group. These two groups clustered together and grouped with the genus Scylla. The phylogenetic analysis supported the inclusion of Charybdis in subfamily Portuninae of the family Portunidae, and revealed a close relationship between Charybdis and Thalamita. We suggest that Thalamita should also be classified into the subfamily Portuninae. The results can be used in the study of phylogenetic, population genetic and conservation genetics of P. pelagicus.
Collapse
Affiliation(s)
- C Y Ma
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - H Y Ma
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - G J Ren
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - W Wang
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - W Chen
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - J X Lu
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - X Zou
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - L B Ma
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| |
Collapse
|
15
|
Abstract
Amelogenin is one of the key protein constituents responsible for the exquisite organization of the calcium phosphate crystals in enamel. Amelogenin forms into nanospheres in solution, while its association with hydroxyapatite is also essential to enamel development. Structural information of full-length amelogenin in either of these physiologically important forms has the potential to provide mechanistic information; however, these data are limited because of the difficulty of determining the structure of large protein complexes and proteins bound to surfaces. To obtain structural insights into amelogenin during these early stages of enamel development, we used a lysine-specific (13)C-, (15)N-labeled sample of murine amelogenin to provide insight into the structure of the hydroxyapatite (HAP)-binding domains of the protein. A combination of one-and two-dimensional solid-state NMR experiments was used to obtain molecular-level insights into the secondary structure and dynamics of full-length amelogenin within a nanosphere-gel and on the surface of HAP. Regions of amelogenin that appear to be primarily random coil in the nanosphere-gel adopt a β-strand structure and are less mobile with HAP binding, indicative of a structural switch upon binding that may be important in the role of amelogenin in enamel development.
Collapse
Affiliation(s)
- J X Lu
- Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | | | | | | |
Collapse
|
16
|
Zhou Q, Li G, Deng XY, He XB, Chen LJ, Wu C, Shi Y, Wu KP, Mei LJ, Lu JX, Zhou NM. Activated human hydroxy-carboxylic acid receptor-3 signals to MAP kinase cascades via the PLC-dependent PKC and MMP-mediated EGFR pathways. Br J Pharmacol 2012; 166:1756-73. [PMID: 22289163 DOI: 10.1111/j.1476-5381.2012.01875.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND AND PURPOSE 3-Hydroxy-octanoate, recently identified as a ligand for, the orphan GPCR, HCA(3), is of particular interest given its ability to treat lipid disorders and atherosclerosis. Here we demonstrate the pathway of HCA(3)-mediated activation of ERK1/2. EXPERIMENTAL APPROACH Using CHO-K1 cells stably expressing HCA(3) receptors and A431 cells, a human epidermoid cell line with high levels of endogenous expression of functional HCA(3) receptors, HCA(3)-mediated activation of ERK1/2 was measured by Western blot. KEY RESULTS HCA(3)-mediated activation of ERK1/2 was rapid, peaking at 5 min, and was Pertussis toxin sensitive. Our data, obtained by time course analyses in combination with different kinase inhibitors, demonstrated that on agonist stimulation, HCA(3) receptors evoked ERK1/2 activation via two distinct pathways, the PLC/PKC pathway at early time points (≤ 2 min) and the MMP/ epidermal growth factor receptor (EGFR) transactivation pathway with a maximum response at 5 min. Furthermore, our present results also indicated that the βγ-subunits of the G(i) protein play a critical role in HCA(3)-activated ERK1/2 phosphorylation, whereas β-arrestins and Src were not required for ERK1/2 activation. CONCLUSIONS AND IMPLICATIONS We have described the molecular mechanisms underlying the coupling of human HCA(3) receptors to the ERK1/2 MAP kinase pathway in CHO-K1 and A431 cells, which implicate the G(i) protein-initiated, PLC/PKC -and platelet-derived growth factor receptor/EGFR transactivation-dependent pathways. These observations may provide new insights into the pharmacological effects and the physiological functions modulated by the HCA(3)-mediated activation of ERK1/2.
Collapse
Affiliation(s)
- Q Zhou
- Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Science, Wenzhou Medical College, Wenzhou, Zhejiang, China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Chen XP, Yang W, Fan Y, Luo JS, Hong K, Wang Z, Yan JF, Chen X, Lu JX, Benovic JL, Zhou NM. Structural determinants in the second intracellular loop of the human cannabinoid CB1 receptor mediate selective coupling to G(s) and G(i). Br J Pharmacol 2011; 161:1817-34. [PMID: 20735408 DOI: 10.1111/j.1476-5381.2010.01006.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND AND PURPOSE The cannabinoid CB(1) receptor is primarily thought to be functionally coupled to the G(i) form of G proteins, through which it negatively regulates cAMP accumulation. Here, we investigated the dual coupling properties of CB(1) receptors and characterized the structural determinants that mediate selective coupling to G(s) and G(i). EXPERIMENTAL APPROACH A cAMP-response element reporter gene system was employed to quantitatively analyze cAMP change. CB(1)/CB(2) receptor chimeras and site-directed mutagenesis combined with functional assays and computer modelling were used to determine the structural determinants mediating selective coupling to G(s) and G(i). KEY RESULTS CB(1) receptors could couple to both G(s)-mediated cAMP accumulation and G(i)-induced activation of ERK1/2 and Ca(2+) mobilization, whereas CB(2) receptors selectively coupled to G(i) and inhibited cAMP production. Using CB(1)/CB(2) chimeric receptors, the second intracellular loop (ICL2) of the CB(1) receptor was identified as primarily responsible for mediating G(s) and G(i) coupling specificity. Furthermore, mutation of Leu-222 in ICL2 to either Ala or Pro switched G protein coupling from G(s) to G(i), while to Ile or Val led to balanced coupling of the mutant receptor with G(s) and G(i) . CONCLUSIONS AND IMPLICATIONS The ICL2 of CB(1) receptors and in particular Leu-222, which resides within a highly conserved DRY(X)(5) PL motif, played a critical role in G(s) and G(i) protein coupling and specificity. Our studies provide new insight into the mechanisms governing the coupling of CB(1) receptors to G proteins and cannabinoid-induced tolerance.
Collapse
Affiliation(s)
- X P Chen
- Institute of Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Jia WP, Pang C, Chen L, Bao YQ, Lu JX, Lu HJ, Tang JL, Wu YM, Zuo YH, Jiang SY, Xiang KS. Epidemiological characteristics of diabetes mellitus and impaired glucose regulation in a Chinese adult population: the Shanghai Diabetes Studies, a cross-sectional 3-year follow-up study in Shanghai urban communities. Diabetologia 2007; 50:286-92. [PMID: 17180353 DOI: 10.1007/s00125-006-0503-1] [Citation(s) in RCA: 159] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2006] [Accepted: 09/26/2006] [Indexed: 01/15/2023]
Abstract
AIMS/HYPOTHESIS To estimate the prevalence and incidence of diabetes mellitus and impaired glucose regulation (IGR) in a Chinese population aged 20-94 years. SUBJECTS AND METHODS A group of 5,628 randomly selected adults, aged 20-94 years, living in the Huayang and Caoyang communities in Shanghai, China, were investigated between 1998 and 2001. During 2002-04, 2,666 subjects were followed up. All the participants underwent anthropometric measurements, blood biochemical analyses and a 75-g OGTT. RESULTS Based on the 2000 census data of China, the age-standardised prevalences were 6.87% for diabetes and 8.53% for IGR at baseline. More than two in five cases with diabetes were undiagnosed. The age-adjusted prevalence of diabetes and IGR increased with age. The age-adjusted prevalences of hypertension, dyslipidaemia and overweight in males were significantly higher (p < 0.001) than in females. The 3-year cumulative incidence rates of diabetes and IGR were 4.96 and 11.10%, respectively. The relative risk of developing diabetes was significantly higher in subjects with IGR than in subjects with NGT (p < 0.001). CONCLUSIONS/INTERPRETATION The prevalence and incidence rates for diabetes or IGR have increased dramatically over the last decades, especially in younger age groups. A large proportion of cases are undiagnosed. We strongly recommend that population-based diabetes screening programmes should be implemented and generalised for younger people.
Collapse
Affiliation(s)
- W P Jia
- Department of Endocrinology and Metabolism, Shanghai Jiaotong University, Affiliated Sixth People's Hospital, Shanghai Diabetes Institute, Shanghai Clinical Center of Diabetes, 600 Yishan Road, Shanghai, 200233, China.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Tang TT, Lu B, Yue B, Xie XH, Xie YZ, Dai KR, Lu JX, Lou JR. Treatment of osteonecrosis of the femoral head with hBMP-2-gene-modified tissue-engineered bone in goats. ACTA ACUST UNITED AC 2007; 89:127-9. [PMID: 17259431 DOI: 10.1302/0301-620x.89b1.18350] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [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: 01/12/2023]
Abstract
The efficacy of β-tricalcium phosphate (β-TCP) loaded with bone morphogenetic protein-2 (BMP-2)-gene-modified bone-marrow mesenchymal stem cells (BMSCs) was evaluated for the repair of experimentally-induced osteonecrosis of the femoral head in goats. Bilateral early-stage osteonecrosis was induced in adult goats three weeks after ligation of the lateral and medial circumflex arteries and delivery of liquid nitrogen into the femoral head. After core decompression, porous β-TCP loaded with BMP-2 gene- or β-galactosidase (gal)-gene-transduced BMSCs was implanted into the left and right femoral heads, respectively. At 16 weeks after implantation, there was collapse of the femoral head in the untreated group but not in the BMP-2 or β-gal groups. The femoral heads in the BMP-2 group had a normal density and surface, while those in the β-gal group presented with a low density and an irregular surface. Histologically, new bone and fibrous tissue were formed in the macropores of the β-TCP. Sixteen weeks after implantation, lamellar bone had formed in the BMP-2 group, but there were some empty cavities and residual fibrous tissue in the β-gal group. The new bone volume in the BMP-2 group was significantly higher than that in the β-gal group. The maximum compressive strength and Young’s modulus of the repaired tissue in the BMP-2 group were similar to those of normal bone and significantly higher than those in the β-gal group. Our findings indicate that porous β-TCP loaded with BMP-2-gene-transduced BMSCs are capable of repairing early-stage, experimentally-induced osteonecrosis of the femoral head and of restoring its mechanical function.
Collapse
Affiliation(s)
- T T Tang
- Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong, University School of Medicine, Shanghai, the People's [corrected] Republic of China.
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Lu JX, Huang ZW, Tropiano P, Clouet D'Orval B, Remusat M, Dejou J, Proust JP, Poitout D. Human biological reactions at the interface between bone tissue and polymethylmethacrylate cement. J Mater Sci Mater Med 2002; 13:803-809. [PMID: 15348569 DOI: 10.1023/a:1016135410934] [Citation(s) in RCA: 28] [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] [Indexed: 05/24/2023]
Abstract
This study investigated cytotoxicity of cement fragments harvested from two prosthesis revisions by the MTT test using L929 fibroblasts and human osteoblasts. The results did not show any toxicity of the extracts prepared after 48 and 78 months implantation. We consider that no MMA monomer has been released from the cement fragments. Histological studies on undecalcified samples harvested around revising prosthesis from 11 patients were used to evaluate tissue reactions at the bone-cement interface after 2-168 months implantation. Cement and prosthesis particles (5-35 microm) either dispersed or forming a layer were observed. A fibrous tissue layer, osteolysis, and osteonecrosis areas were observed at the interface. Besides, fibroblasts, macrophages, and multinucleated giant cells were also observed. New bone formation with osteoid, osteoblasts, and endochondral ossification with fibrocartilaginous tissue has been observed. The tissue reactions seemed to decrease with time. However, osseous trabeculae fractures were observed in the samples after 19 months. Although we consider that monomer toxicity, exothermic reaction, and particles formation may cause short-term prosthesis loosening; the trabeculae fractures may be due to prosthesis and bone cement micromovements. This fractures and particles formation may cause long-term prosthesis loosening.
Collapse
Affiliation(s)
- J X Lu
- Laboratoire Interface Matrice Extracellulaire et Biomatériaux (IMEB), Faculté d'Odontologie, Université de la Méditerranée, 27 Boulevard Jean Moulin, 13385 Marseille Cedex 05, France
| | | | | | | | | | | | | | | |
Collapse
|
21
|
Abstract
The aim of this work was to establish the prevalence of overweight and obesity and its associated comorbidities in a Chinese population older than 20 years of age. A group of 2776 randomly selected adults (20-94 years of age) living in the Huayang Community in Shanghai, China, were investigated between 1998 and 2000. Body weight, height, waist and hip circumferences and blood pressure were measured, as were fasting blood glucose, fasting insulin and lipid profile, as well as blood glucose 2 h after a glucose load, and a 75-g glucose tolerance test was performed. The prevalence of overweight was 29.5% and obesity was 4.3%, with a greater number of women being obese than men. More than one-third of the population had abnormal lipid levels. Impaired glucose regulation (IGR) occurred in 10.8%; and 9.8% of the population were classified as having type 2 diabetes mellitus. Hypertension was present in 58.4% of this population. About 21% and 29.3% of the population suffered from high total cholesterol and high triglyceride, respectively. The prevalence of metabolic syndrome was 10.2%. The prevalence of diabetes, IGR and metabolic syndrome increased progressively in association with a body mass index (BMI) of >23 kg m(-2). Hence, although the prevalence of obesity is low in this Chinese population, higher BMI and waist circumference values are clearly associated with an increasing prevalence of comorbidities. The absolute risk of having diabetes, IGR and metabolic syndrome is high in adults with a BMI of > or =23 kg m(-2).
Collapse
Affiliation(s)
- W P Jia
- Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital, China.
| | | | | | | | | |
Collapse
|
22
|
|
23
|
Sinha R, Kiley SC, Lu JX, Thompson HJ, Moraes R, Jaken S, Medina D. Effects of methylselenocysteine on PKC activity, cdk2 phosphorylation and gadd gene expression in synchronized mouse mammary epithelial tumor cells. Cancer Lett 1999; 146:135-45. [PMID: 10656618 DOI: 10.1016/s0304-3835(99)00250-5] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Methylselenocysteine (MSC), an organic selenium compound is an effective chemopreventive agent against mammary cell growth both in vivo and in vitro but its mechanism of action is still not understood. We have previously demonstrated that MSC is able to inhibit growth in a synchronized TM6 mouse mammary epithelial tumor cell line at 16 h time point followed by apoptosis at 48 h. The decrease in cdk2 kinase activity was coincident with prolonged arrest of cells in S-phase. The present set of experiments showed that cdk2 phosphorylation was reduced by 72% in the MSC-treated cells at 16 h time point. Expression for gadd34, 45 and 153 was elevated 2.5 to 7 fold following MSC treatment only after 16 h time point. In order to investigate a possible upstream target for MSC, we analyzed protein kinase C (PKC) in this model. Total PKC activity was reduced in TM6 cells by MSC (50 microM) within 30 min of treatment, both in cytosolic (55.4 and 77.6%) and membrane (35.2 and 34.1%) fractions for calcium-dependent and independent PKCs, respectively. PMA significantly elevated the PKC activity in membrane fraction (P < 0.01) and MSC inhibited this activation by more than 57%. The effect of MSC was selenium specific as selenomethionine and sulfurmethyl-L-cysteine (SMC) did not alter PKC activity either in cytosolic or membrane fraction. Immunoblot analysis showed that PKC-alpha was translocated to the membrane by PMA and MSC did not alter this translocation. PKC-delta was faintly detectable in membrane fractions of control and MSC-treated cells. MSC treatment slightly reduced levels of PKC-e (in cytosolic and membrane fractions) and PKC-zeta (cytosolic fractions). The data presented herein suggest that PKC is a potential upstream target for MSC that may trigger one or all of the downstream effects; i.e. the decrease of cdk2 kinase activity, decreased DNA synthesis, elevation of gadd gene expression and finally apoptosis.
Collapse
Affiliation(s)
- R Sinha
- Department of Cell Biology, Baylor College of Medicine, Houston, TX 77030, USA.
| | | | | | | | | | | | | |
Collapse
|
24
|
Abstract
The aim of this work is to study the effects of chitosan on rat knee cartilages. 0.2 ml of 0.1% chitosan solution pH = 6.9 were injected inside rat knees articular cavity. One, three and six weeks after injection, histological and histomorphometric studies were performed on undecalcified samples embedded in polymethylmetacrylate. Results show that after 1 and 6 weeks: (i) chitosan slows significantly (P < 0.005) the decrease in epiphyseal cartilage thicknesses and (ii) increases significantly articular cartilage chondrocyte densities (P < 0.002). However chitosan solution induces a proliferation of fibrous tissue with abundant fibroblasts, fibrocytes and monocytes inside the joint and this proliferation is still present after 6 weeks. This study suggests that chitosan could act on the growth of epiphyseal cartilage and wound healing of articular cartilage.
Collapse
Affiliation(s)
- J X Lu
- Laboratoire de Recherches Orthopédiques, UPRES-A CNRS 7052, Paris, France
| | | | | | | | | |
Collapse
|
25
|
Abstract
We have developed two colonizable bone cements: the first is a partially resorbable bisphenol-alpha-glycidyl methacrylate (Bis-GMA)-based cement (PRC) and the second is a calcium phosphate cement (CPC). PRC is composed of aluminous silanized ceramic and particles of a bioresorbable polymer embedded in a matrix of Bis-GMA. CPC consisted of tricalcium phosphate, monocalcium phosphate monohydrate, dicalcium phosphate dihydrate, and xanthane. Both cements were implanted into cavities drilled in rabbit femoral and tibial condyles. After 2, 4, 12, and 24 weeks of implantation, histological observations and biomechanical tests were performed. With CPC, a progressive osteointegration with a concomitant biodegradation in the presence of macrophages were observed. The mechanical study revealed a decrease of the compressive strength until the 4th week, followed by a slight increase. There was a general decrease in the elastic modulus with time. Moreover, by week 4, the histological study showed that the new bone was in direct contact with CPC margins. No inflammation was observed during the observation period. With PRC, the osteointegration as well as the biodegradation were slight, but its compressive strength was higher than that of cancellous bone and CPC (p < 0.05) at all observation periods. Its elastic modulus was greater than that of cancellous bone and CPC until the 4th week, then fell under the values of the cancellous bone.
Collapse
Affiliation(s)
- J X Lu
- Laboratoire Interface Matrice Extracellulaire Biomatériaux, Faculté d'Odontologie, Marseille, France.
| | | | | | | | | | | | | | | |
Collapse
|
26
|
Lu JX, Flautre B, Anselme K, Hardouin P, Gallur A, Descamps M, Thierry B. Role of interconnections in porous bioceramics on bone recolonization in vitro and in vivo. J Mater Sci Mater Med 1999; 10:111-120. [PMID: 15347932 DOI: 10.1023/a:1008973120918] [Citation(s) in RCA: 249] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The interconnections in a porous biomaterial are the pathways between the pores. They conduct cells and vessels between pores. Thus they favour bone ingrowth inside ceramics. The aim of our study was to determine the effect on bone ingrowth of interconnections in two ceramics: hydroxyapatite (HA) and beta-tricalcium phosphate (beta-TCP) with the same porosity of about 50% and a mean pores size of 100-300 microm and a mean interconnection size of 30-100 microm. In vitro, four discs for osteoblast culture were studied after 14 and 28 days of incubation. The results show that human osteoblasts can penetrate interconnections over 20 microm in size, and colonize and proliferate inside macropores, but the most favourable size is over 40 microm. In vivo, eight cylinders were implanted in the middle shaft of both rabbit femurs for 12 or 24 weeks. The histomorphometric results show that interconnections in porous ceramics favour bone ingrowth inside the macropores. In the HA group the rate of calcification and bone ingrowth do not differ, and chondroid tissue is observed inside pores. But in beta-TCP, the calcification rate and the bone ingrowth increased significantly. At week 12 significant correlation between new bone ingrowth and the size of the interconnections is observed between new bone ingrowth and the density of pores. In conclusion we notice that in vivo a 20 microm interconnection size only allows cell penetration and chondroid tissue formation; however the size of the interconnections must be over 50 microm to favour new bone ingrowth inside the pores. We propose the concept of "interconnection density" which expresses the quantity of links between pores of porous materials. It assures cell proliferation and differentiation with blood circulation and extracellular liquid exchange. In resorbable materials, pore density and interconnection density are more important than their size, contrary to unresorbable materials in which the sizes and the densities are equally important.
Collapse
Affiliation(s)
- J X Lu
- Institut de Recherche sur les Maladies du Squelette, Ru de Docteur Calot, 62608 Berck-Sur-Mer Cedex, France
| | | | | | | | | | | | | |
Collapse
|
27
|
Lu JX, Gallur A, Flautre B, Anselme K, Descamps M, Thierry B, Hardouin P. Comparative study of tissue reactions to calcium phosphate ceramics among cancellous, cortical, and medullar bone sites in rabbits. J Biomed Mater Res 1998; 42:357-67. [PMID: 9788497 DOI: 10.1002/(sici)1097-4636(19981205)42:3<357::aid-jbm3>3.0.co;2-i] [Citation(s) in RCA: 163] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In order to understand the influence of the implantation site on bone biomaterial evaluation, we implanted cylinders of HA and beta-TCP ceramics in the femoral diaphysis and condyle of rabbits. After 3, 8, 12, and 24 weeks of implantation, histological investigation and histomorphometry were performed on undecalcified samples. Our results show that spontaneous bone healing in the empty cavities is significantly different (p < 0.05) between cortical (SBH > 80%) and cancellous bone sites (SBH < 31%) and that no new bone is formed in marrow tissue. For both porous ceramics, the highest osteogenesis was obtained in the cortical site. Osteogenesis was intermediate in the cancellous site and weak in the medullar site. The material biodegradation was the strongest in the medullar site and higher in the cancellous site than in the cortical site. Both activities were better in the beta-TCP than in the HA (p > 0.05). The marrow tissue presents a foreign-body reaction more reliable, sensitive, and durable than other bone tissues. Therefore, the cancellous bone site is a good site for evaluation of the biofunctionality of biomaterials because of the equilibrium of the osteogenesis and the biodegradation activities, but marrow tissue seems to be better for testing material biocompatibility in vivo.
Collapse
Affiliation(s)
- J X Lu
- Institut de Recherche sur les Maladies du Squelette, Berck-Sur-Mer, France.
| | | | | | | | | | | | | |
Collapse
|
28
|
Yao DF, Huang ZW, Chen SZ, Huang JF, Lu JX, Xiao MB, Meng XY. Diagnosis of hepatocellular carcinoma by quantitative detection of hepatoma-specific bands of serum gamma-glutamyltransferase. Am J Clin Pathol 1998; 110:743-9. [PMID: 9844586 DOI: 10.1093/ajcp/110.6.743] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [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: 11/14/2022] Open
Abstract
Tissues of hepatocellular carcinoma (HCC) can express hepatoma-specific gamma-glutamyltransferase (GGT) and secrete GGT into circulating blood. Serum GGT was separated into several bands (up to 11), including hepatoma-specific bands (HSBs, I', II, and II') by a vertical slab electrophoresis assay of polyacrylamide stage gradient gel. In the present study, the HSBs of serum GGT were separated, and the HSB activity was quantitatively measured in 91 patients with HCC and compared with that of 106 patients with benign liver disease, 16 patients with extrahepatic tumors, and 30 healthy control subjects. Significant differences of the HSB activity were observed between the HCC group and each study group. An HSB activity greater than 5.5 U/L seems to be diagnostic of HCC. The quantitative method has a sensitivity of 85.3%, a specificity of 97.2%, a positive predictive value of 95.1%, a negative predictive value of 91.2%, and an accuracy of 92.5% for detecting HCC. No correlation was found between HSB activity and the serum alpha-fetoprotein (AFP) level or tumor size in patients with HCC. The quantitative analysis of HSB activity of GGT is superior to detection of the AFP concentration and is useful in early diagnosis of small HCC or AFP-negative HCC.
Collapse
Affiliation(s)
- D F Yao
- Research Center of Clinical Molecular Biology, Affiliated Hospital, Nantong Medical College, Jiangsu Province, China
| | | | | | | | | | | | | |
Collapse
|
29
|
Fang JX, Marlow WH, Lu JX, Lucchese RR. Monte Carlo studies of effects of substrate size on water–substrate interaction energy and water structure. J Chem Phys 1997. [DOI: 10.1063/1.474884] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
30
|
Liu H, Meng YH, Lu JX. [Analysis and nursing care of vasa praevia in cord velamentous insertion]. Zhonghua Hu Li Za Zhi 1997; 32:86-8. [PMID: 9369565] [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: 02/05/2023]
|
31
|
|
32
|
|
33
|
Lu JX, Zhou RL. [Progress in the study of regulation of extracellular matrix gene expression by transforming growth factor-beta]. Sheng Li Ke Xue Jin Zhan 1994; 25:80-2. [PMID: 8073259] [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: 01/28/2023]
|
34
|
Sun GL, Ouyang RR, Chen SJ, Gu YZ, Huang LA, Lu JX, Wang ZY. Treatment of acute promyelocytic leukemia with all-trans retinoic acid. A five-year experience. Chin Med J (Engl) 1993; 106:743-8. [PMID: 8033606] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
From January 1986 to April 1991, 107 consecutive patients with acute promyelocytic leukemia (APL) were treated with retinoic acid (RA) at an oral dose of 45-60mg/m2/d, alone or in combination with chemotherapy. In 91 cases treated with RA alone, 74 (81.3%) achieved complete remission (CR). The CR rate was 75% in 16 cases treated with combined therapy. Among 50 patients closely followed for a median of 36 months (4-60), 10 received RA as continuation therapy (Group A), 10 received chemotherapy (Group B) and 30 were treated with RA and chemotherapy alternately in regular sequence (Group C). The mean survival time was 8.4, 9.7 and 21.6 months, respectively, for the 29 cases who died. The survival probability was higher in Group C than in Group A and B (P < 0.01). RA did not provoke or aggravate DIC, it did not cause marrow hypoplasia or aplasia. The side effects were relatively mild as compared with chemotherapy. CFU-GM markedly reduced before treatment was restored to normal level after CR, while the result for L-CFU was reversed. In 40 cases examined for in vitro induction of differentiation, 39 responders were culminating in CR. Aberrant karyotype t (15; 17) was positive in all 47 cases examined prior to the treatment. It disappeared in all of the 20 cases studied after achieving CR, and reappeared in 3 cases following relapse. The best regimen to maintain a longer CR duration and survival time in this study was to use RA and chemotherapy alternately as continuation therapy.
Collapse
Affiliation(s)
- G L Sun
- Shanghai Institute of Hematology, Shanghai Second Medical University
| | | | | | | | | | | | | |
Collapse
|
35
|
Hou SX, Liao GT, Cheng YH, Lu JX, Liang XY, Zhang YQ. [Optimization of the preparing process for sinitang drop pills by orthogonal test]. Zhongguo Zhong Yao Za Zhi 1993; 18:284-6, 318. [PMID: 8216802] [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: 01/29/2023]
Abstract
The preparing process for Sinitang drop pills was optimized by orthogonal test. The results from nine experiments were subjected with three indexes to objective analysis and variance analysis, and an optimum preparing process for Sinitang drop pills was sieved out. The quality of the drop pills prepared in this way was examined to be up to the standard.
Collapse
Affiliation(s)
- S X Hou
- School of Pharmacy, West China University of Medical Sciences, Chengdu
| | | | | | | | | | | |
Collapse
|
36
|
Lu JX. Magnesium chelation inactivates beta-galactosidase in -20 degrees C storage. Biotechniques 1992; 12:177-81. [PMID: 1616704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Mammalian cell lysate containing beta-galactosidase (beta Gal) derived from the transient expression of the bacterial lacZ gene driven by the human beta-actin promoter loses activity progressively over time in storage at -20 degrees C in the presence of EDTA. The simultaneous presence of NaCl with EDTA exacerbates such an inactivation, although NaCl by itself does not. However, EGTA, a chelating agent that preferentially binds Ca2+ over Mg2+, does not inactivate beta Gal. Addition of equal or higher molar concentration of Mg2+ (as MgCl2) or Ca2+ (as CaCl2), both effectively chelated by EDTA, to an EDTA-containing lysate prevents this cold-related inactivation, but does not reactivate the enzyme. Therefore, the chelation of Mg2+ by EDTA at -20 degrees C inactivates beta Gal. Storage of cell lysate at -70 degrees C completely prevents the EDTA-induced inactivation of beta Gal. It is recommended that when beta Gal activity is used as the reporter for gene expression 1) EDTA should not be used to prepare cell lysate and 2) the cell lysate should be stored in a -70 degrees C freezer to preserve full activity.
Collapse
Affiliation(s)
- J X Lu
- Section of Biochemistry, Molecular and Cell Biology, Cornell University, Ithaca, NY 14853
| |
Collapse
|
37
|
Zheng BX, Huang JS, Zhang QE, Lu JX. Structure of (η5-C5H5)2W1.2Mo0.8Fe(μ3-Te)2(CO)7 containing a Te.Te bonding interaction. Acta Crystallogr C 1991. [DOI: 10.1107/s0108270190007636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
38
|
Ren SG, Lu JX, Kang K, Wu JZ, Li FH. Percutaneous balloon exploration and plug closure of ductus arteriosus. Chin Med J (Engl) 1991; 104:343-9. [PMID: 2065553] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Percutaneous closure of ductus arteriosus (DA), preceded by a balloon exploration of the defect and a catheter scale examination of the foam plug, was performed on 47 patients aged from 6 to 54 years. The minimal internal diameter of DA varied from 3.7 to 11.6 mm. Successful occlusion was achieved in all the cases without major complications. Sustained improvement was observed in both clinical findings and laboratory parameters. No incidence of endocarditis, plug displacement or recanalization was noted during follow-up of 6 to 35 months. It revealed that ductal exploration with the balloon catheter is able to ascertain the actual occlusion diameter of the lesion and the catheter scale plug examination can ensure good matching between DA and the plug so that changing of plugs and ectopic embolisms can be avoided.
Collapse
Affiliation(s)
- S G Ren
- First Department of Medicine, Hospital of PLA, Hangzhou
| | | | | | | | | |
Collapse
|
39
|
|
40
|
|
41
|
Ren SG, Lu JX, Kang K. [Percutaneous balloon exploration and plug closure of arterial duct]. Zhonghua Nei Ke Za Zhi 1990; 29:283-5, 317. [PMID: 2242689] [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: 12/30/2022]
Abstract
UNLABELLED Percutaneous plug closure of arterial duct (AD) was performed on 38 patients, with ages ranging from 6 to 54 years. The inside diameter of AD varied from 3.7 to 11.6 mm and the shunt size of AD was 8-77% of the pulmonary flow. A combined technique was used in the closure operation, which employs a balloon catheter to explore the size of AD as well as its distensibility and a catheter scale to examine the compatibility of the foam plug with the AD to be closed. Total occlusion was achieved in all the 38 cases, the success rate being 100%. Immediately after the procedure, blood oxygen analysis showed an interruption of the left-to-right shunt and the pulmonary artery pressure decreased from 4.71 +/- 0.80 to 3.34 +/- 0.53 kPa (P less than 0.001). Four to 7 days later, the cardiothoracic ratio reduced from 52.8 +/- 4.6 to 49.7 +/- 4.2% (P less than 0.001) and the cardiac index decreased from 6.00 +/- 1.31 to 4.46 +/- 0.80 L/min.m-2 (P less than 0.001). Random color Doppler flow imaging suggested no residual shunts. No major complications were observed in any of the cases and follow-up observations in 1 to 24 months showed no plug displacement or recanalization. IN CONCLUSION the balloon exploration is able to make certain of the "occlusion diameter" of AD and the scale examination can surely sort out the plug most compatible with the AD to be closed, so that success of every step for the closure is ensured.
Collapse
|
42
|
Huang ME, Ye YC, Chen SR, Chai JR, Lu JX, Zhoa L, Gu LJ, Wang ZY. Use of all-trans retinoic acid in the treatment of acute promyelocytic leukemia. Blood 1988; 72:567-72. [PMID: 3165295] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Twenty-four patients with acute promyelocytic leukemia (APL) were treated with all-trans retinoic acid (45 to 100 mg/m2/day). Of these, eight cases had been either nonresponsive or resistant to previous chemotherapy; the other 16 cases were previously untreated. All patients attained complete remission without developing bone marrow hypoplasia. Bone marrow suspension cultures were studied in 15 of the 24 patients. Fourteen of these patients had morphological maturation in response to the retinoic acid (1 mumol/L). Chloroacetate esterase and alpha-naphthyl acetate esterase staining as well as electronmicroscopic examination confirmed that retinoic acid-induced cells differentiated to granulocytes with increased functional maturation (as measured by nitroblue tetrazolium reduction, NBT). The single nonresponder to retinoic acid in vitro was resistant to treatment with retinoic acid but attained complete remission after addition of low-dose cytosine arabinoside (ara-C). During the course of therapy, none of the patients showed any abnormalities in the coagulation parameters we measured, suggesting an absence of any subclinical disseminated intravascular coagulation. The only side effects consisted of mild dryness of the lips and skin, with occasional headaches and digestive symptoms. Eight patients have relapsed after 2 to 5 months of complete remission. The others remain in complete remission at 1+ to 11+ months and are still being followed up. We conclude that all-trans retinoic acid is an effective inducer for attaining complete remission in APL.
Collapse
Affiliation(s)
- M E Huang
- Shanghai Institute of Hematology, Shanghai Second Medical University, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
43
|
Huang JL, Huang JQ, Lu SF, Zhang HH, Wu DM, Lin YH, Zhang XM, Lu JX. Crystal and molecular structure of some cubane-like tetranuclear molybdenum clusters. Acta Crystallogr A 1987. [DOI: 10.1107/s0108767387080322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
44
|
Lin MB, Zhang W, Zhao XW, Lu JX, Wang M, Chen LG. [Biotransformation of tetrandrine in rats and in men]. Yao Xue Xue Bao 1982; 17:728-35. [PMID: 7168321] [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: 01/23/2023]
|
45
|
Lu JX. [Alternations of cardiac rheogram and its first derivative in patients with cor pulmonale (author's transl)]. Zhonghua Xin Xue Guan Bing Za Zhi 1982; 10:28-9. [PMID: 7084009] [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: 01/23/2023]
|