4.Transfection of embryonic stem cells with green fluorescent protein gene and their differentiation into neural cells
Zhi-yan, SHAN ; Jing-ling, SHEN ; Lei, LEI ; Yan-ning, XU ; Lian-hong, JIN
Chinese Journal of Endemiology 2008;27(4):397-400
Objective To establish embryonic stem cells (ESC) that can express green fluorescent protein (CFP) and differentiate them into neurons. It would provide tagging neurons for clinical transplantation to cure neural system diseases. Methods ESC (R1) was transfeeted with a plasmid containing the GFP by electroporation. A transgeuic cell line was obtained after selection with G418. The ESCs were characterized by AKP staining. Monolayer differentiation method was used to induce neural differentiation derived from GFP-ESC and immunofluorescence method was used to identify Tuj1 positive cells. Results There was no significant difference(X2=3.14,P0.05) in transfect rates between liposome and electroporation (65% vs 79%). The AKP staining of GFP-ESC was positive. GFP-ESC could be differentiated into neural cells. Conclusions These results show that ESC expressing GFP has been estabhshed, which can be differemiated into neurons.
5.Evaluation of combined treatment of gonadotropin-releasing hormone analog with recombinant human growth hormone in girls with central precocious puberty
Hua-Mei MA ; Min-Lian DU ; Yan-Hong LI ; Zhe SU ; Hong-Shan CHEN ;
Chinese Journal of Endocrinology and Metabolism 1986;0(03):-
Objective To evaluate the effect of combined treatment with gonadotropin-releasing hormone analog(GnRHa)and recombinant human growth hormone(rhGH)on predicted adult height(PAH)in girls with central precocious puberty(CPP).Methods Fifteen girls with CPP,whose growth velocity during GnRHa treatment had been less than 4 cm/year,were given additional rhGH treatment at a dose of 1 U?kg~(-1)?w~(-1),sc, for 4-13 months.Comparisons of growth velocity,height SDS for bone age(HtSDS_(BA))and PAH were performed before and after the combined treatment.Results During rhGH combined with GnRHa therapy,growth velocity increased significantly[(7.4?1.7)cm/year vs (3.2?0.7)cm/year baseline,P<0.01].In 7 girls treated with rhGH and GnRHa for more than 9 months,growth velocity in the second 6 months[(6.5?1.0)cm/year]was slightly lower than that in the first 6 months[(8.8?1.1)cm/year],being both faster than that of baseline [(3.2?0.8)cm/year].There was a significant increase in rhGH-duration corrected change of HtSDS_(BA) [(0.35?0.15)/6 month vs (0.12?0.18 )/6 month baseline,P<0.01]and PAH[(3.2_+1.4)cm/ 6 month vs (1.4?1.1)cm/6 month baseline,P<0.01].Conclusion In girls with CPP showing a marked decrease in growth velocity during GnRHa treatment,the combined rhGH and GnRHa treatment remarkably improves growth velocity and PAH.
6.Effects of IL-1beta on inducible nitric oxide synthase-nitric oxide system activity in arginine vasopressin-induced rat cardiac fibroblasts.
Yan-Hong FAN ; Lian-Yiu ZHAO ; Hai-Changm WANG
Chinese Journal of Applied Physiology 2007;23(1):70-73
AIMTo explore the effects of interleukin-1beta (IL-1beta) on inducible nitric oxide synthase (iNOS)-nitric oxide (NO) system activity in arginine vasopressin (AVP)-induced rat cardiac fibroblasts (CFs).
METHODSCFs were isolated by trypsin digestion method. Nitric acid reductase method, spectrophotometry and reverse transcription-polymerase chain reaction (RT-PCR) were used to detect NO contents, NOS activity and iNOS mRNA expression.
RESULTSAVP significantly increased iNOS mRNA expressions, NOS activity and NO contents (P < 0.05) in CFs. IL-1beta enhanced the effects of AVP on iNOS-NO system activity in a concentration-dependent manner, moreover the iNOS mRNA expressions, NOS activity and NO contents of AVP + 3 ng/ml, AVP + 5 ng/ml IL-1beta group were both significantly higher than those of AVP group (P < 0.05). But when IL-1beta concentration increased to 5 ng/ml, the iNOS mRNA expressions, NOS activity and NO contents did not increase accordingly, slightly decreased instead.
CONCLUSIONWithin certain range of concentrations IL-1beta cooperates with AVP to increase iNOS-NO system activity in CFs.
Animals ; Arginine Vasopressin ; pharmacology ; Fibroblasts ; drug effects ; metabolism ; Interleukin-1beta ; pharmacology ; Male ; Myocytes, Cardiac ; drug effects ; metabolism ; Nitric Oxide ; metabolism ; Nitric Oxide Synthase Type II ; metabolism ; Rats ; Rats, Sprague-Dawley
7.Research on correlation between odor and chemical compounds of Lonicera japonica.
Lian PENG ; Shuo LI ; Yong-hong YAN ; Hui-qin ZOU ; Xiao-yun YANG ; Jia-hui LI
China Journal of Chinese Materia Medica 2014;39(22):4383-4388
This study aims to investigate the relationship between odor and contents of the chemical compounds in Lonicera japonica, including chlorogenic acid, galuteolin and polyphenols. High performance liquid chromatography (HPLC) was applied to determine the contents of chlorogenic acid and galuteolin in L. japonica. The ponptent of polyphenols was determined by UV-Vis Spectrophotometry. Electronic nose was used to extract and measure the odor of L. japonica. Then SPSS 17.0 software was employed for data processing. There is a significant positive correlation between the comprehensive index value of aroma and the contents of chlorogenic acid and polyphenols. The regression equations have been established. However, the relationship between the comprehensive index value and the content of galuteolin is not obvious. This is proof that the odor of L. japonica has close connection with the chemical compounds. Therefore, this research offered a new method for initially determine or predict the content of the chemical composition in L. japonica,
Chlorogenic Acid
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chemistry
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Chromatography, High Pressure Liquid
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methods
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Electronic Nose
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Lonicera
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chemistry
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Odorants
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analysis
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Polyphenols
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chemistry
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Smell
8.Systematic review of efficacy and safety of shenmai injection for chronic heart failure.
Hong-Dong CHEN ; Yan-Ming XIE ; Lian-Xin WANG ; Jiu-Bin WU
China Journal of Chinese Materia Medica 2014;39(18):3650-3661
The paper is to evaluate the efficacy and safety of Shenmai injection for chronic heart failure, retrieving the Pubmed, CBM, CNKI, Wanfang database and VIP database to comprehensively collect all types research report of Shenmai injection for chronic heart failure (CHF). Particularly wishing to point out, randomized controlled trials are include for the evaluation of effectiveness, which are statistically analyzed and evaluated by Rev-Man 5. 2. The current studies show that the improvement rate of NYHA classification of cardiac function of CHF patients and their related indexes figure such as LVEF, SV, CO, BNP, 6 min walking test value are all improved by the combination of Shenmai injection and foundation treatment. However, HR is almost no improvement. Meanwhile, serious ADR/AE of Shenmai injection for CHF isn't appear.
Drug Combinations
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Drugs, Chinese Herbal
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administration & dosage
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adverse effects
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therapeutic use
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Heart Failure
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drug therapy
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Humans
9.Residue decline dynamics and safety utilization of carbendazim in cultivation of Anoectochilus roxburghii.
Qing-Song SHAO ; Hong-Bo LIU ; Yu-Yun ZHANG ; Ai-Lian ZHANG ; Ming-Yan LI
China Journal of Chinese Materia Medica 2014;39(9):1559-1563
The paper aimed to study the residue decline dynamic and standards for safety utilization of carbendazim in roots, stems, leaves of Anoectochilus roxburghii and in growth media. Samples extracted with methanol were purified by liquid-liquid extraction and analysed by HPLC. The results showed that average rate of recovery was 82.9% - 95.7% and RSD were 2.0% - 6.3% with add of carbendazim in respectively diverse concentration, which meets inspection requirement of pesticide residue. Two kinds of dosages of carbendazim were treated, varying from recommended dosage (1.0 kg x hm(-2)) to 1.5 times recommended dosage (1.5 kg x hm(-2)). Results of two years test showed that the half-life period of carbendazim were 7.01 - 8.51 d in the growth media of A. roxburghii, 3.58 - 4.27 d in stems and 3.50 - 3.91 d in leaves, 4.93 - 5.71 d in roots. Providing max recommended residue of carbendazim in the cultivation of A. roxburghii is 0.5 mg x kg(-1), sprayed 4 times a year with the dosage of 1.0 kg x hm(-2), 28 days is proposed for the safety interval of the last pesticide application's and harvest's date.
Benzimidazoles
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metabolism
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pharmacology
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Carbamates
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metabolism
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pharmacology
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Chromatography, High Pressure Liquid
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Culture Media, Conditioned
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chemistry
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Dose-Response Relationship, Drug
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Fungicides, Industrial
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metabolism
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pharmacology
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Liquid-Liquid Extraction
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Orchidaceae
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drug effects
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metabolism
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Pesticide Residues
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analysis
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metabolism
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Plant Leaves
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drug effects
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metabolism
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Plant Roots
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drug effects
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metabolism
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Plant Stems
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drug effects
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metabolism