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1.
Zhongguo Zhong Yao Za Zhi ; 44(12): 2493-2498, 2019 Jun.
Artigo em Chinês | MEDLINE | ID: mdl-31359716

RESUMO

The standard decoction of Chinese herbal decoction pieces is a standard reference substance to measure whether different dosage forms of Chinese medicine are basically consistent with those of clinical decoction,and provides new ideas and methods for effectively solving the problems of uneven quality in Chinese medicine dispensing granules. In this study,a systematic method for evaluating the quality of Scrophulariae Radix decoction was established from the perspective of " standard decoction",providing reference for the quality control of the Scrophulariae Radix dispensing granules. 15 batches of Scrophulariae Radix decoction pieces from different origins were collected,and 15 batches of standard decoctions were prepared according to the standardized process with water as solvent.Harpagide and harpagoside were used as quantitative detection indicators to determine the content,calculate the transfer rates and determine the extraction rate. The high performance liquid chromatography( HPLC) was used to establish a standard decoction fingerprint analysis method. The results showed that the transfer rates of harpagide and harpagoside in 15 batches of Scrophulariae Radix pieces standard decoction were( 70. 84±13. 39) % and( 48. 56±6. 40) % respectively; the extraction rate was( 57. 47±5. 89) %. Nine peaks were identified in the HPLC fingerprint,and the similarity was higher than 0. 97 between the fingerprints of 15 batches of standard decoction and the control fingerprint. In this study,the preparation process of standard decoction of Scrophulariae Radix pieces conformed to the traditional decoction preparation method. The sources of the samples were representative,and the established fingerprint method was stable and feasible,which can provide reference for the preparation and quality control of Scrophulariae Radix dispensing granules.


Assuntos
Medicamentos de Ervas Chinesas/normas , Raízes de Plantas/química , Scrophularia/química , Cromatografia Líquida de Alta Pressão , Controle de Qualidade
2.
Huan Jing Ke Xue ; 36(8): 3099-105, 2015 Aug.
Artigo em Chinês | MEDLINE | ID: mdl-26592047

RESUMO

Phosphogypsum is a phosphorus chemical waste which has not been managed and reused well, resultantly, causing environmental pollution and land-occupation. Phosphogypsum wastes were used as a soil amendment to assess the effect on wheat growth, yield and CO2 emissions from winter wheat fields. Its economic and environmental benefits were analyzed at the same time. The results showed that wheat yield was increased by 37.71% in the treatment of phosphogypsum of 2 100 kg x hm(-2). Compared with the control treatment, throughout the wheat growing season, CO2 emission was accumulatively reduced by 3% in the treatment of phosphogypsum waste of 1050 kg x hm(-2), while reduced by 8% , 10% , and 6% during the jointing stage, heading date and filling period of wheat, respectively; while CO2 emission was accumulatively reduced by 7% in the treatment of phosphogypsum waste of 2 100 kg x hm(-2) throughout the wheat growing season, as reduced by 11% , 4% , and 12% during the reviving wintering stage, heading date and filling period of wheat, respectively. It was better for CO2 emission reduction in the treatment of a larger amount of phosphogypsum waste. In the case of application of phosphogypsum waste residue within a certain range, the emission intensity of CO2 ( CO2 emissions of per unit of fresh weight or CO2 emissions of per unit of yield) , spike length, fresh weight and yield showed a significantly negative correlation--the longer the ear length, the greater fresh weight and yield and the lower the CO2 emissions intensity. As to the carbon trading, phosphogypsum utilization was of high economic and environmental benefits. Compared with the control, the ratio of input to output changed from 1: 8.3 to 1: 10.7, which in the same situation of investment the output could be increased by 28.92% ; phosphogypsum as a greenhouse gas reducing agent in the wheat field, it could decrease the cost and increase the environmental benefit totally about 290 yuan per unit of ton. The results demonstrated phosphogypsum wastes could obviously decrease the CO2 emission from field soil and had a great potential to control agricultural greenhouse gases. Hopefully it has an important application perspective for the low-carbon, ecological and sustainable agricultural development.


Assuntos
Sulfato de Cálcio/análise , Dióxido de Carbono/análise , Fósforo/análise , Poluentes do Solo/análise , Triticum/efeitos dos fármacos , Agricultura/economia , Gases , Solo , Triticum/crescimento & desenvolvimento
3.
Bing Du Xue Bao ; 26(4): 276-82, 2010 Jul.
Artigo em Chinês | MEDLINE | ID: mdl-20836380

RESUMO

A novel dual luciferase expression vector was designed and its expression characteristics were studied in vitro and in vivo. Firstly, the Gluc and Fluc genes were connected via the TaV 2A sequence by overlaping PCR, and inserted into the expression vector pAAV2neoCAG, obtaining the recombinant plasmid pAAV2neoCAG-Gluc-2A-Fluc. Then pAAV2neoCAG-Gluc-2A-Fluc was transfected into BHK21 cells and the activity of Gluc and Fluc in the supernatant and cell lysates were assayed respectively. Results showed that both Gluc and Fluc were expressed successfully. The Gluc was mainly detected in the culture media while the Fluc was mostly within cells. The activity of Gluc in the supernatant increased gradually with time while the Fluc activity in cells almost kept stable. To investigate the expression of pAAV2neoCAG-Gluc-2A-Fluc in vivo, the plasmid was hydrodynamically injected into BALB/c mice through tail vein. The Gluc activity was assayed in a small volume of blood taken by tail vein at different time points. Results showed that Gluc was expressed stably at least 7 days. Live bioluminescence imaging technology was used to compare the expression characteristics of Gluc and Fluc. Whole body imaging was seen when coelenterazine, a specific substrate for Gluc, was injected, and the imaging signals decreased rapidly within 10 minutes. Liver imaging was showed when Flue specific substrate named D-Luciferin was injected, and the imaging remained stable at least for half an hour. The dual luciferase expression vector pAAV2neoCAG-Gluc-2A-Fluc combines the advantages of the secreted report gene Gluc and the non-secreted report gene Fluc, and will provide a new tool for cell labeling and tracing.


Assuntos
Expressão Gênica , Vetores Genéticos/genética , Luciferases/genética , Animais , Sequência de Bases , Cricetinae , Crustáceos/enzimologia , Vaga-Lumes/enzimologia , Genes Reporter , Vetores Genéticos/metabolismo , Luciferases/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Dados de Sequência Molecular
4.
Nan Fang Yi Ke Da Xue Xue Bao ; 29(3): 397-401, 2009 Mar.
Artigo em Chinês | MEDLINE | ID: mdl-19304509

RESUMO

OBJECTIVE: To obtain streptavidin-tagged human interleukin-15 (SA/hIL15) fusion protein and evaluate its bioactivity. METHODS: pET24a-6His-SA-hIL-15 and pET32a-hIL-15-SA-6His plasmids were constructed and expressed in BL 21(DE3) host bacteria to generate the fusion protein. The recombinant fusion protein IL-15/SA was purified using Ni-NTA affinity chromatography and refolded, and the efficiency of surface modification of the fusion protein on biotinylated cells was examined by fluorescence-activated cell sorting. CCK-8 method was used to evaluate the effect of IL-15/SA fusion protein in inducing the proliferation of human peripheral-blood lymphocyte (PBL) cells stimulated by PHA. RESULTS: The recombinant SA-hIL-15 and hIL15-SA fusion proteins were highly expressed in BL21(DE3) at about 20% of the total bacterial proteins. The purified hIL15-SA fusion protein exhibited a bifunctionality by promoting the proliferation of PBL cells activated by PHA and high-affinity binding to biotinylated cell surface mediated by SA, with a cell surface modification efficiency exceeding 95%. SA-hIL-15 showed a 4-fold higher hIL15 bioactivity than hIL15-SA. CONCLUSION: SA/hIL-15 bifunctional fusion protein has been successfully obtained to facilitate the future development of hIL-15-surface-modified cancer cell vaccine.


Assuntos
Interleucina-15/biossíntese , Ativação Linfocitária/efeitos dos fármacos , Proteínas Recombinantes de Fusão/imunologia , Estreptavidina/biossíntese , Vacinas Anticâncer/genética , Vacinas Anticâncer/imunologia , Escherichia coli/genética , Escherichia coli/metabolismo , Vetores Genéticos , Humanos , Interleucina-15/genética , Proteínas Recombinantes de Fusão/biossíntese , Proteínas Recombinantes de Fusão/genética , Estreptavidina/genética
5.
Di Yi Jun Yi Da Xue Xue Bao ; 22(6): 564-5, 2002 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-12297489

RESUMO

Xiaoxuming decoction, an ancient traditional Chinese medical prescription for treatment of stroke, has somehow lost its clinical application since Tang Dynasty. Based on the historic record of this prescription, mechanisms of composition and clinical and experimental studies, the authors attempt to evaluate the standing of Xiaoxuming decoction as a remedy for stroke.


Assuntos
Medicamentos de Ervas Chinesas/uso terapêutico , Acidente Vascular Cerebral/tratamento farmacológico , Humanos
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