1.The TD-PCR and Phylogenetic Analysis of Bacillus licheniformis 16S rDNA
Kai MA ; Guang-Quan LIU ; Chi CHENG ;
Microbiology 1992;0(04):-
16S rDNA sequences of 30 Bacillus strains originally identified as Bacillus licheniformis from China Center of Industrial Culture Collection (CICC) were determined and analyzed. The results indicated that 24 strains are affiliated to Bacillus licheniformis;3 strains are affiliated to Bacillus cereus and 1 strain is affiliated to Bacillus subitilis;the similarity levels of 16S rDNA among the rest of 2 strains and other strains of Bacillus licheniformis,range from 96.4% to 97.4%,further tests are needed to clarify their position. Also we testified that 5' terminal 500bp of 16S rDNA is available to differentiate the strains of Bacillus licheniformis、Bacillus subtilis and Bacillus cereus.
2.Lower respiratory tract of pneumoconiosis on fosfomycin antibacterial activity in vitro of fosfomycin to infected in coal worker pneumoconiosis in vitro antibacterial activity.
Pei-Yue LIU ; De-Quan GU ; Kai-Hui ZHANG
Chinese Journal of Industrial Hygiene and Occupational Diseases 2011;29(7):547-548
Acinetobacter Infections
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microbiology
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Acinetobacter baumannii
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drug effects
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isolation & purification
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Anthracosis
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microbiology
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Anti-Bacterial Agents
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pharmacology
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Drug Resistance, Bacterial
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Fosfomycin
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pharmacology
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Humans
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Imipenem
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pharmacology
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Pneumonia, Bacterial
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microbiology
3.Expressions of miRNA-324-5p and transcription factor forkhead box C1 in glioma and their clinical significances
Kai QUAN ; Rongfu ZHOU ; Jianguo TONG ; Lin JIANG ; Liang WEN
Cancer Research and Clinic 2021;33(4):270-275
Objective:To investigate the expression of microRNA-324-5p (miR-324-5p) and transcription factor forkhead box C1 (FOXC1) in glioma and their relationship with the prognosis of patients.Methods:From March 2012 to March 2015, a total of 72 cases of glioma tissues were collected from glioma patients who were admitted to Chongqing Hygeia Tumor Hospital and the People's Hospital of Nanchuan in Chongqing, and 28 cases of normal human brain tissues resected in craniocerebral surgery were also collected. The expressions of miR-324-5p and FOXC1 mRNA were detected by real-time fluorescent quantitative polymerase chain reaction (qRT-PCR), and the expression of FOXC1 protein was detected by immunohistochemistry. Pearson method was used to analyze the correlation between the expressions of miR-324-5p and FOXC1 in glioma tissues; Kaplan-Meier method was used to analyze the survival of patients with glioma; Cox regression analysis was used to analyze the risk factors affecting the prognosis of patients with glioma.Results:FOXC1 protein was mainly located in the cytoplasm of glioma, and its positive expression rate in glioma tissues was 81.94% (59/72), which was significantly higher than that in normal brain tissues [17.86% (5/28)], and the difference was statistically significant ( χ2 = 35.938, P<0.01). Compared with normal brain tissues, the expression of miR-324-5p was down-regulated in glioma tissues (0.62±0.19 vs. 0.98±0.02, t = 9.974, P < 0.05), and the expression of FOXC1 mRNA was up-regulated (1.41±0.29 vs. 0.99±0.02, t = 7.633, P < 0.05). The expressions of miR-324-5p and FOXC1 protein were correlated with the number of primary lesions, differentiation degree, TNM stage and lymph node metastasis of glioma (all P<0.05). Pearson analysis showed that the expressions of miR-324-5p and FOXC1 mRNA were negatively correlated ( r = -0.550, P<0.01). The 5-year overall survival rate of patients in miR-324-5p high-expression group was significantly higher than that of patients in miR-324-5p low-expression group (45.71% vs. 24.33%, χ2 = 6.531, P = 0.011), and the 5-year overall survival rate of patients in FOXC1 protein high-expression group was significantly lower than that of patients in FOXC1 protein low-expression group (30.41% vs. 42.34%, χ2 = 3.631, P = 0.047). Multivariate Cox regression analysis showed that low differentiation, TNM stage Ⅲ-Ⅳ, lymph node metastasis, low expression of miR-324-5p and high expression of FOXC1 protein were independent risk factors for prognosis of glioma patients (all P < 0.05). Conclusions:The expression of miR-324-5p is low and the expression of FOXC1 is high in glioma. They may be involved in the regulation of tumor differentiation and metastasis, and related to the poor prognosis of patients. They may be potential therapeutic targets for glioma.
4. Extraction process of triterpene acids in drugs of leaves of Eriobotrya japonica (Thunb.) Lindl.
Chinese Pharmaceutical Journal 2013;48(10):805-807
OBJECTIVE: To study the optimum extraction condition of triterpene acids in ldregs of leaves of Eriobotrya japonica (Thunb.) Lindl. METHODS: Single factor analysis and orthogonal experimental design were used to select the concentration of ethanol (A), solid-liquid ratio (B), extraction time (C), and extraction times (D) by L9(34) orthogonal test. RESULTS: The concentration of ethanol was the main process factor, and extraction times was the secondary factor. The optimum condition was A2B1C3D1, which included using 90% ethanol as the extraction solvent with 7 times the amount of φ, and 80°C heat back for 2 times, 1.5 h for each time. CONCLUSION: Ethanol has good extraction effect for triterpene acids in loquat residue. This study provides important information for the comprehensive utilization of leaves of Eriobotrya japonica (Thunb.) Lindl. resources by pharmaceutical manufacturers.
5.Advances of ginsenosides in anticancer activities
Kai QUAN ; Qun LIU ; Ping LI ; Lianwen QI
Journal of Medical Postgraduates 2015;(4):427-431
Cancer, a group of various diseases involving unregulated cell growth, still imposes a global threat to public health. Ginseng plants, which contains a wide variety of saponins, known as ginsenosides, is an age-old remedy for human ailments, including cancer.This review sheds light on the molecular mechanisms underlying the cancer chemopreventive and/or chemotherapeutic activity of ginsenosides and their metabolites with particular focus on the modulation of cell signaling pathways associated with cell proliferation, apoptosis, angiogenesis, oxidative stress, inflammation and the metastasis of cancer cells.The review could enhance the understanding of the anticancer mechanisms of ginsenosides, provide directions for clinical practice and give more information for developing novel an-ticancer agents with high efficiency, low toxicity and weak resistance.
6.Prescription Screening Test and Inhibitory Rate Experiment of Blumea Gynecological Lotion
Yan CHEN ; Kai WANG ; Quan YANG ; Yuxin PANG
Chinese Journal of Information on Traditional Chinese Medicine 2017;24(3):87-90
Objective To screen the presciption of Blumea gynecological lotion and investigate the inhibitory effect through inhibition rate test; To provide a basis for clinical application. Methods Consumption of Tween-80, SLES, hydrogenated castor oil (RH-40), and clarity of the solution were selected as the evaluation indexes to optimize the solubilizing agents. By using the filter paper method and the inhibition zone size as the evaluation index, the antimicrobial effect on Staphylococcus aureus. Escherichia coli and Candida albicans was studied to screen the best antibacterial agent from 2 g/L GM-BP, 2 mL/L PHMB, 2 mL/L A.SAP. With Blumeapowder dissolution percentage as the evaluation index, orthogonal test was used to screen additives in the lotion. Finally, the bacteriostasis effect and stability of the obtained lotion were investigated in vitro. Results The order of solubilizing effect was RH-40>SLES>Tween-80, and that of inhibition zone size was PHMB>A.SAP>GM-BP. The best prescription as follows:0.6 mg/mL Blumea powder, 0.04 g/mL SLES, 0.01 g/mL CAB-35, 10% propylene glycol. Bacteriostatic rates of Blumea gynecology lotion sample were more than 90%, and bacteriostatic rates remained more than 80% after 3 months. Conclusion The prescription of Blumea gynecology lotion is reasonable and practicable, with simple preparation process, available materials and good inhibitory effect and stability.
7.Therapeutic Observation of Acupuncture for Gastrointestinal Dysfunction in Severe Pneumonia
Aijun QUAN ; Guofeng CAI ; Kai LIU ; Jifa ZHONG ; Lili SHANG
Shanghai Journal of Acupuncture and Moxibustion 2017;36(3):287-290
Objective To observe the clinical efficacy of acupuncture in treating severe pneumonia complicated with gastrointestinal dysfunction (GIDF).Method Sixty patients with severe pneumonia complicated with GIDF were randomized into a treatment group and a control group, 30 cases in each group. The two groups were both given conventional Western medications. In addition, the treatment group was intervened by acupuncture, and the control group by oral administration of Mosapride citrate capsules and enteral nutrition via nasogastric tube. After 7-day treatment, the changes of GIDF score, intraabdominal pressure, bowel sound and gastric retention were observed in the two groups, and the clinical efficacies were compared.Result The total effective rate was 93.1% in the treatment group versus 78.6% in the control group, and the between-group difference was statistically significant (P<0.05). The scores of GIDF and the indexes (intraabdominal pressure, bowel sound, and gastric retention) were significantly changed after the treatment in both groups (P<0.05). The scores of GIDF and the indexes in the treatment group were significantly different from those in the control group after the intervention (P<0.05).Conclusion Acupuncture can promote the recovery of gastrointestinal function in severe pneumonia patients, since it can significantly improve the intraabdominal pressure, bowel sound and gastric retention.
8.Free forearm flap and free iliac bone reconstruct the composite tissue defects of the floor of mouth and the lower part of face in the same period
Jin-cheng XU ; Bao-quan LU ; Quan-shun HUANG ; Jian-cheng LI ; Kai NG ZHA ; Sheng-kai LIA0 ; Tao XU
Chinese Journal of Microsurgery 2011;34(4):283-286
ObjectiveTo probe into the clinical efficiency of reconstruction to person who had composite tissue defect of the floor of mouth and the lower part of face with the free forearm flap and free iliac bone in the same term.MethodsBefore the surgery, the surgeon should carefully evaluate the scope and shape of defects in 11 cases who had the composite tissue defects of the floor of mouth and the lower part of face, to design the individual forearm flap, so that it matches with the defect region. During surgery, the first resumption of defects using titanium plates forming the basic shape of mandible and the occlusal relationship,then used to re-sawing to take modeling of the iliac bone,transplanted free iliac bone and fixed after the inside of the titanium plate, thereby restoring the continuity of mandible missing.ResultsFree forearm flap and free iliac bone all survived in 11 cases, the success rate of 100%. The patients were followed up for 6 to 12 months, although the shape of restoration areas were different levels of fat, but eating, swallowing and other oral function had been well improved, 7/11 could enter normal diet, 4/11 to enter liquid diet, At the same time, the patients in social activities can communicate in a language daily, sensory function of skin flap and facial appearance has been satisfactory recovery.ConclusionConformal free forearm flap and free iliac bone is an ideal way to reconstruct the composite tissue defects of the floor of mouth and the lower part of face in the same period, not only safe, practical prognostic effect, and also can significantly improve the patients quality of life, which is worthy of reference and use.
9.A(H5N1) and A(H7N9) avian influenza: the H7N9 avian influenza outbreak of 2013.
Chinese Journal of Contemporary Pediatrics 2013;15(6):401-404
influenza virus can infect humans and cause disease. The clinical presentation of human infection is usually mild, but the infection caused by A(H5N1) avian influenza virus occurring initially in Hongkong in 1997 or the A(H7N9) virus isolated first at the beginning of this year in China is severe and characterized by high mortality. The mortality rate of adolescents and children caused by H5N1 avian influenza is lower than that of adults and the younger the child the lower the mortality rate. A few pediatric H7N9 avian influenza cases recovered soon after treatment. A child was determined to be a H7N9 avian influenza virus carrier. These findings suggested that the pediatric H7N9 avian influenza infection was mild. It is very important to start anti-virus treatment with oseltamivir as early as possible in cases of avian influenza infection is considered. Combined therapy, including respiratory and circulatory support and inhibiting immunological reaction, is emphasized in the treatment of severe cases.
Animals
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Birds
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virology
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China
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epidemiology
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Disease Outbreaks
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Humans
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Influenza A Virus, H5N1 Subtype
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Influenza in Birds
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virology
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Influenza, Human
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diagnosis
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drug therapy
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epidemiology
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virology
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Time Factors
10.Primary study on candidate serum markers of osteosarcoma
Guodong LI ; Zhengdong CAI ; Kai CHEN ; Biao CHEN ; Yeqing SUN ; Wei SUN ; Jian LI ; Quan LI
Chinese Journal of Orthopaedics 2011;31(10):1165-1169
ObjectiveTo discover potential serum biomarkers of osteosarcoma by an integrated analysis of datasets from gene chip and surface enhanced laser desorption-ionization time-off-light mass spectrometry(SELDI-TOF-MS).Methods Gene chip was used to screen potentialbiomarkers of osteosarcoma from osteosarcoma cell lines (MG-63,Saos-2 and U-2OS),and SELDI-TOF-MS was used to screen protein peaks with statistically significant difference from serum samples (27 osteosarcoma cases and 47 healthy cases).The association between these two types of markers was constructed by link-test to get cross-validated serum biomarkers of osteosarcoma.Immunoblot analysis was performed to detect the expression of one candidate osteosarcoma protein maker in serums from osteosarcoma patients and members of the control group.ResultsSix hundred and fifty three candidate osteosarcoma gene markers were found by gene chip and 6 protein peaks were found by SELDI-TOF-MS.Thirteen differentially expressed serum markers of osteosarcoma including CYC-1 were screened by link-test analysis (12 of them were up-regulated in serum samples of the osteosarcoma patients while 1 was down-regulated ).By immunoblot,we found that CYC-1 protein was significantly up-regulated in serums from osteosarcoma patients compared to the control group.ConclusionAn integrated analysis of datasets from gene chip and SELDI-TOF-MS could accelerate the discovery,screening and identification of tumor biomarkers.A total of 13 potential serum protein markers of osteosarcoma were discovered in this study.