2.VIABILITY,VIRULENCE AND STORAGE OF VACUUM-DRIED BEAUVERIA BASSIANA CONIDIA POWDER
Sheng-Hua YING ; Ming-Guang FENG ;
Microbiology 1992;0(05):-
The fresh conidia powder of Beauveria bassiana SGBB8702 produced with diphasic technology was dried using 36-h procedures of vacuum-freeze drying (VFD) or vacuum drying (VD). The VFD and VD procedures reduced water content of the fresh conidia powder from 58.56% to 3.97% and 4.26%, resulting in preparations containing 1.29, and 1.25?10 11 conidia/g. The VFD or VD conidia had the same viability (≥98%) as the fresh ones but germinated slightly more slowly than the fresh ones. The estimates of LC 50 s for the fresh, VFD, and VD conidia against Myzus persicae on day 7 after inoculation were 1.15, 5.89, and 2.95?10 4 conidia/ml, respectively. At the concentration of 10 6 conidia/ml, the LT 50 of the fresh conidia against M. persicae was estimated as 3.6 d, corresponding to 3.9 d and 4.4 d for the VFD and VD conidia, respectively. Due to much lower cost, the VD procedure was of greater potential for drying B. bassiana conidia in mass production though the VFD procedures resulted in slightly better quality of conidia powder. The viability and virulence of the VFD conidia were assessed periodically during 12-mon storage at 4℃ and 20℃, respectively. No viable conidia stored at 20℃ were detected 255 d after storage whereas those stored at 4℃ had a viability of 90.15% and an LT 50 of 4.7 d at the end of 12-mon storage. The results showed that storage of B. bassiana conidia powder at ambient temperature was unable to maintain shelf life at commercially acceptable level even though its water content was reduced to
3.Effect of Actinidia chinensis planch polysaccharide on the growth and apoptosis, and p-p38 expression in human gastric cancer SGC-7901 cells.
Wen-Ying SONG ; Guan-Hua XU ; Guang-Ji ZHANG
Chinese Journal of Integrated Traditional and Western Medicine 2014;34(3):329-333
OBJECTIVETo investigate the effect of Actinidia chinensis Planch polysaccharide (ACPS) on the growth and apoptosis of human gastric cancer SGC-7901 cells, and to explore the effect of SGC-7901 cells on p-p38 expression.
METHODSThe inhibition rates at different concentrations of ACPS on SGC-7901 cells at 24, 48, and 72 h were detected using CCK-8 method. Apoptosis ratios in SGC-7901 were determined by flow cytometry after 48-h treatment of different concentrations of ACPS. The expression of pro-caspase-9, PARP, and p-p38 in SGC-7901 cells after treated by different concentrations of ACPS was detected using Western blot. The expression of pro-caspase-9, PARP, and p-p38 was detected after SGC-7901 cells were pre-treated by p38 specific inhibitor.
RESULTSCompared with the control group, the optical density of SGC-7901 cells decreased after treated by 1, 2.5, 5, and 10 mg/mL ACPS (P < 0.05). Meanwhile, the longer the acting time, the lower the optic density (P < 0.01). IC50 was 7.43 mg/mL at 24 h; 3.88 mg/mL at 48 h, and 1.32 mg/mL at 72 h respectively. ACPS suppressed the protein expression of pro-caspase-9 (P < 0.01) and up-regulated the expression of PARP (89KD) (both P < 0.01). Further study showed that the protein expression of p-p38 was up-regulated in SGC-7901 cells treated by ACPS of different concentrations at 24 h (P < 0.05). The expression of phosphorylation p38 and the ACPS induced apoptosis of SGC-7901 cells could be inhibited after treated by specific inhibitor for 2 h.
CONCLUSIONSACPS could inhibit the growth of SGC-7901 cells and induce apoptosis. The underlying mechanism of inducing apoptosis was partially due to activating the p38MAPK path and further activating Caspase9 and PARP, finally leading to cell death.
Actinidia ; chemistry ; Apoptosis ; drug effects ; Caspase 9 ; metabolism ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Humans ; Poly (ADP-Ribose) Polymerase-1 ; Poly(ADP-ribose) Polymerases ; metabolism ; Polysaccharides ; pharmacology ; Stomach Neoplasms ; metabolism ; pathology ; p38 Mitogen-Activated Protein Kinases ; metabolism
5.Thyroid hormone resistance syndrome caused by V458A mutation in the thyroid hormone receptor ? gene
Fang YU ; Yongjie ZHAO ; Ying CHEN ; Xiaohua JIANG ; Liqun GU ; Hua SUN ; Jieli LU ; Guang NING
Chinese Journal of Endocrinology and Metabolism 1986;0(04):-
Objective To study the genotype of the thyroid hormone receptor ? (THRB) gene in a patient with thyroid hormone resistance syndrome. Methods The peripheral blood samples of the patient and his parents were collected, then DNA was isolated. PCR and direct sequencing techniques were performed to determine if there were mutations in their THRB gene. Results No mutation was found in exon 1-9. There was a point mutation in exon 10 of THRB which is a T to C transition in nucleotide 1658 resulting in the replacement of the normal Val (GTG) with an Ala (GCG) (V458A). The mutation was located in exon 10 of THRB gene and was a heterozygote. No mutation was found in THRB gene of his parents.Conclusion The gene diagnosis confirms that the patient has a mutation V458A located in the ligand binding area of THRB.
6.The application of GlideScope videolaryngoscope in head neck tumor operations with difficult tracheal intubation.
Xiu-ying ZHANG ; Guang-hua ZHANG ; Lu-bo GAO
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2006;41(12):950-951
Adult
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Aged
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Aged, 80 and over
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Female
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Head and Neck Neoplasms
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surgery
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Humans
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Intubation, Intratracheal
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methods
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Laryngoscopes
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Male
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Middle Aged
7.Chinmedomics: a new strategy for research of traditional Chinese medicine.
Ai-hua ZHANG ; Hui SUN ; Guang-li YAN ; Ping WANG ; Ying HAN ; Xi-jun WANG
China Journal of Chinese Materia Medica 2015;40(4):569-576
Syndrome and formulae (or prescription) are two key issues in traditional Chinese medicine (TCM) and the premise research for material basis of TCM. However, vagueness of syndromes and complexity of formulae greatly limited the evaluation to syndromes and effective substance basis of prescription. Therefore, how to solve the evaluation of syndromes, confirming the efficacy material basis in prescription are the current hot issues of international concern. To solve these problems, establishing chinmedomics by integrated serum pharmacochemistry of TCM with metabolomics technology, that is a unique method of TCM research, made outstanding contributions in solving international concerns such as the effectiveness and security aspects of TCM. On the basis of the biological characterization of syndrome, the metabolic profiling of animal models of TCM syndrome, and related metabolic fingerprints as well as metabolic biomarkers were established to evaluate the overall effects of TCM formulae and corresponding relationship of syndrome-formulae. The active constituents were screened using the plotting of correlation between (endogenous) marker metabolites and (exogenous) serum constituents (PCMS), and is ongoing verification by further biological experiments. Correlation analysis between the ingredients in the body after oral formulae and endogenous markers in vivo can be used to clarify the active ingredients and synergistic properties. This method was successfully applied for rapid discovery of potentially bioactive components and metabolites from TCM, and through a series of studies on the chinmedomics, it proved that the established method could help to explore the effective substance for further research of TCM. As a new research approach, Chinmedomics is the best method to fit the holistic concept of TCM, and it can not only interpret the essence of syndrome but also elucidate the scientific connotation of Chinese medical formulae.
Animals
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Diagnosis, Differential
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Drug Prescriptions
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Drug Therapy
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Drugs, Chinese Herbal
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analysis
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pharmacokinetics
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Humans
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Medicine, Chinese Traditional
8.Analysis of the data for inpatients with acute organophosphorous pesticide poisoning in Wucheng.
Yun-he HUO ; Xiu-hua WANG ; Xiao-ying SHANG ; Shuang-lian LIU ; Guang-shu CUI
Chinese Journal of Industrial Hygiene and Occupational Diseases 2004;22(1):32-32
Acute Disease
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Adolescent
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Adult
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Aged
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Child
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Child, Preschool
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China
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Humans
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Infant
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Inpatients
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Insecticides
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poisoning
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Middle Aged
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Organophosphorus Compounds
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Pesticides
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poisoning
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Poisoning
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etiology
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mortality
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therapy
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Risk Factors
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Survival Rate
9.Effects of Pneumoperitoneum with Carbon Dioxide on Implantation and Growth of Tumor Cells
Guang-Yi WANG ; Xian-Ying MENG ; Jian-Hua GU ; Guo-Yue LV
Chinese Journal of Bases and Clinics in General Surgery 2003;0(02):-
Objective To study whether carbon dioxide used to establish pneumoperitoneum has an influence on port-site and intraperitoneal implantation and metastasis of tumor cells. Methods R 15 hepatic cancer cells were injected into 30 Wistar rats’ peritoneal cavities 1 hour before operation, then the 30 Wistar rats were randomly divided into 3 groups: gasless group, helium group and carbon dioxide group. The suspension was exposed to the gas environment for 2 hours, all animals were killed after 28 days and the port-site and intraperitoneal implantation and metastasis of tumor cells were examined.Results On port-site, intestinal serous coat, mesentery, greater omentum and diaphragm, the weights of tumor cells, in carbon dioxide group were (326.7?230.3) mg, (626.2?215.9) mg, (476.2?204.8) mg,(2 536.5?906.7) mg and (384.5?149.9) mg respectively; in helium group were (235.6?107.3) mg, (414.2?148.4) mg, (261.8?92.6) mg, (1 633.4?247.3) mg and(220.0?57.9) mg; in gasless group were (145.0?42.4) mg, (221.5?108.2) mg, (212.5?109.6) mg, (797.5?335.9) mg and 113.0 mg.The weights of carbon dioxide group showed a significant increase, compared with helium group and gasless group (P 0.05). Conclusion The insufflation of carbon dioxide promotes intraperitoneal tumor implantation and growth compared with helium and gaslessness in a rat model.
10.Purification of Spirulina sp.
Xu-Hua GAN ; Xin-Yun TANG ; Guang-Jin LIU ; Cheng-Ying SHI ; Ben-Fan WANG ;
Microbiology 1992;0(02):-
Growth patterns of trichome and contaminative bacteria in Spirulina sp. liquid culture were observed, and it was found that the number of neutral and alkalophilic bacteria was always 105~106 times of that of Spirulina sp. trichome. It would be very difficult to get real pure Spirulina sp. strain by classical methods of dilution plate, capillary and single trichome selecting methods. A great deal of contaminative bacteria was washed out by two pretreatment processes. Low speed centrifugation was designed to wash the strains which usually deposit at bottom, and filtration method was designed to treat the strains usually floating at surface. Sandwich plate and dilution plate were designed for the purification of the mobile strains and non-mobile strains, respectively. A lot of strains were purified by the above processes and pure single trichome formed pure colonies on plates.