2.The capacity of MTD method for distinguishing Mycobacterium tuberculosis and nontuberculosis mycobacteria
Xiao-Hong GUI ; Jian MEI ; Yi-Feng WANG ;
Chinese Journal of Laboratory Medicine 2003;0(07):-
Objective To evaluate the capacity of MTD method to distinguish between Myeobacterium tuberculosis and nontuberculosis mycobacteria.Methods Ten standard strains(including 1 H_(37)Rv strain and 9 nontuberculosis mycobacteria strains),94 clinical strains(including 48 Mycobacterium tuberculosis and 46 nontuberculosis mycobaeteria strains)and 40 sputum specimens were tested by MTD method(AMPLIFIED-MTI))and traditional methods.The results of these methods were compared.Results For all Myeobacterium tuberculosis and nontuberculosis mycobacteria strains,the agreement of MTD method and traditional method was 100%.And the positive detectable rate for sputum samples was 65% that was obviously higher than that for the direct smear(5/40),concentration smear(10/ 40)or culture(5/40).Conclusion MTD is a rapid test for identification of Mycobacterium tuberculosis and nontuberculosis mycobaeteria with high sensitivity and specificity.
3.The prospect of using bioinformatics technology in the field of biological medicine in the era of big data.
Rui-feng HU ; Xiao-yan XING ; Gui-bo SUN ; Xiao-bo SUN
Acta Pharmaceutica Sinica 2014;49(11):1512-1519
With the advanced development of information technology, there is a huge impact on various industries for the arrival of big data. In the biomedical field, innovative genome sequencing technology enables low-cost, high-throughput, and high-speed to become a reality, which leads to an explosive growth in data and also appeared in an urgent need to process those massive biological information. High performance computing (HPC) along with effective methods is one of the best ways to deal with the problem of big data in biomedical field which could serve the biomedical development best. We discussed the issues faced in biomedical big data processing and concluded that the bioinformatics is an indispensable component of biomedical technologies.
Biomedical Research
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trends
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Computational Biology
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Computing Methodologies
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Humans
4.Prevalence and risk factors of organ failure in patients with severe acute pancreatitis
Xiao-Yan LI ; Xiao-Bo WANG ; Xiu-Feng LIU ; Shu-Gui LI
World Journal of Emergency Medicine 2010;1(3):201-204
BACKGROUND: This study was undertaken to determine the prevalence of organ failure and its risk factors in patients with severe acute pancreatitis (SAP) . METHODS: A retrospective analysis was made of 186 patients with SAP who were had been hospitalized in the intensive care unit of Jinzhong First People's Hospital between March 2000 and October 2009. The patients met the diagnostic criteria of SAP set by the Surgical Society of the Chinese Medical Association in 2006. The variables collected included age, gender, etiology of SAP, the number of comorbidit, APACHEII score, contrast-enhanced CT (CECT) pancreatic necrosis, CT severity index (CTSI) , abdominal compartment syndrome (ACS) , the number of organ failure, and the number of death. The prevalence and mortality of organ failure were calculated. The variables were analyzed by unconditional multivariate logistic regression to determine the independent risk factors for organ failure in SAP. RESULTS: Of 186 patients, 96 had organ failure. In the 96 patients, 47 died. There was a significant association among the prevalence of organ failure and age, the number of comorbidity, APACHEII score, CECT pancreatic necrosis, CTSI, and ACS. An increase in age, the number of comorbidity, APACHEII score, CECT pancreatic necrosis were correlated with increased number of organ failure. Age, the number of comorbidity, APACHEII score, CECT pancreatic necrosis, CTSI and ACS were assessed by unconditional multivariate logistic regression. CONCLUSIONS: Organ failure occurred in 51.6% of the 186 patients with SAP. The mortality of SAP with organ failure was 49.0%. Age, the number of comorbidity, APACHEII score, CECT pancreatic necrosis, CTSI and ACS are independent risk factors of organ failure.
5.Synthesis and biological evaluation of 2-(3-butynoicamidophenyl) benzothiazole derivatives as antitumor agents.
Gui-Lin YIN ; Yan LI ; Ke TANG ; Xiao-Feng JIN ; Xiao-Guang CHEN ; Li LI ; Zhi-Qiang FENG
Acta Pharmaceutica Sinica 2014;49(6):888-895
A series of 2-(3-butynoicamidophenyl)benzothiazole derivatives were synthesized starting from 4-fluoro-3-nitrobenzoic acid. Structures of all the synthesized compounds were confirmed by 1H NMR and HR-MS. Their antitumor activities against human tumor cells lines (HCT116, Mia-PaCa2, U87-MG, A549, NCI-H1975) were evaluated by MTT assay. The results revealed that most of the synthesized compounds showed potent activities against HCT116, Mia-PaCa2, U87-MG tumor cells lines. Particularly, compounds 14c and 14h exhibited better activity with IC50 values of 1 x 10(-8) mol x L(-1) against U87-MG and HCT116 respectively. The structure-activity relationship of compounds was also discussed preliminarily.
Antineoplastic Agents
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chemical synthesis
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pharmacology
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Benzothiazoles
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chemical synthesis
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pharmacology
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Cell Line, Tumor
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Drug Screening Assays, Antitumor
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Humans
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Nitrobenzoates
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Structure-Activity Relationship
6.Application of Finite Element Method in Thoracolumbar Spine Traumatology.
Min ZHANG ; Yong-gui QIU ; Yu SHAO ; Xiao-feng GU ; Ming-wei ZENG
Journal of Forensic Medicine 2015;31(2):132-139
The finite element method (FEM) is a mathematical technique using modern computer technology for stress analysis, and has been gradually used in simulating human body structures in the biomechanical field, especially more widely used in the research of thoracolumbar spine traumatology. This paper reviews the establishment of the thoracolumbar spine FEM, the verification of the FEM, and the thoracolumbar spine FEM research status in different fields, and discusses its prospects and values in forensic thoracolumbar traumatology.
Biomechanical Phenomena
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Computer Simulation
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Finite Element Analysis
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Humans
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Lumbar Vertebrae/injuries*
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Models, Theoretical
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Stress, Mechanical
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Thoracic Vertebrae/injuries*
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Traumatology
7.Research progress on musk secretion mechanism of forest musk deer.
Hang JIE ; Xiao-Lan FENG ; Gui-Jun ZHAO ; De-Jun ZENG ; Cheng-Lu ZHANG ; Qiang CHEN
China Journal of Chinese Materia Medica 2014;39(23):4522-4525
Forest musk deer (Moschus berezovskii), a rare wild medicinal animal, is listed under the category of the state key protected wildlife list of China. Musk, secreted by the musk glands, is with high economic and medicinal value and used as precious traditional medicine in China. In order to meet the needs of musk in Chinese traditional medicine, forest musk deer farming was conducted in 1950s, but the research progress on musk secretion mechanism was slow. Therefore, by reviewing the histological and anatomical structure of forest musk deer musk gland, the relationship between sex hormones and the musk secretion process, and the molecular mechanism of the musk secretion, the existing problems in investigating the musk secretion mechanism were analyzed and the development trends in this field were also discussed, in order to provide a reference for further studies on the musk secretion mechanism and improve musk production of forest musk deer.
Animals
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Deer
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metabolism
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Exocrine Glands
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anatomy & histology
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chemistry
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secretion
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Fatty Acids, Monounsaturated
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chemistry
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metabolism
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Male
8.Investigation of relationship between occupational dermatoses in coal miners and their working environment.
Xing-gang WANG ; Xi-xiang WU ; Gui-xin ZHENG ; Xiao-juan WANG ; Yu-juan FENG
Chinese Journal of Industrial Hygiene and Occupational Diseases 2006;24(8):489-491
Adult
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Coal Mining
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Dermatitis, Occupational
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epidemiology
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Humans
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Male
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Middle Aged
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Prevalence
9.Clinical observation on the effect of Bio-Gide and Bio-Oss on osteogenetic regeneration in dental implantation
Gui-Feng CHEN ; Xiao-Ming LIU ; Qiu-Rong HU ; Gang LUO ; Xin-An JIN ; Bin LIU ;
Chinese Journal of Primary Medicine and Pharmacy 2006;0(10):-
Objective To summarize the experiences in using Bio-Gide and Bio-Oss for guided bone regener- ation in dental implantation.Methods In 28 cases of bone deficiency,Bio-Gide membranes were applied to cover alveolar defects filled with the Bio-Oss bone powder.In postoperative periodic follow-.up,the bone regeneration effect was observed by successive clinical and X-ray examination.Results 38 implants were inserted in the 28 patients and Bio-Gide membranes were used in the sites of the 38 implants.Alveolar bone defects were filled with new bone in 27 patients,1 implant loosed because of inflammation.37 implants had ideal osseointegration at stageⅡsurgery and were prosthetic rcconstructed successfully.No implant loosed during the observed period of 15 months to 4 years. Conclusion Bio-Gide and Bio-Oss have ideal effect of guided bone regeneration in dental implantation.
10.The Distribution and Drug Resistance of the Common Clinical Gram-Negative Bacillus
Jin-Gui CAO ; Xiao-Feng HE ; Di WU ; Li-Qun JIAO ; Hu ZHANG ;
Microbiology 1992;0(02):-
To determine the distribution and drug resistance tendency of Gram-negative bacillus so as to provide a reasonable selection for antibiotic in clinical treatment.The clinical isolates bacillus were mainly Gram-Negative bacillus during three years.The detection out ratio for Gram-Negative bacillus had decreased gradually but the ratio for non-fermental gram-negative bacillus had increased.The combinations of antibiotic and enzyme inhibitor has more antibacterial activity to non-fermental gram-negative bacillus than antibiotic.The detection out ratio for ESBLs had gradually increased.