1.The effects of basic fibroblast growth factor on the expression of heat shock protein 70 in rat's retina afterischemia/reperfusion injury
Chinese Journal of Ocular Fundus Diseases 1996;0(01):-
Objective To observe the effects of basic fibroblast growth factor (bFGF) on the expression of heat shock protein 70 (HSP70) in rat′s retina after ischemia/reperfusion injury. Methods The rat model of experimental retinal ischemia/ reperfusion injury was made by increasing the intraocular pressure. Tweenty-four Wistar rats were divided into normal (3 rats) and operation group (21 rats) randomly. The latter group was subdivided into group 0 hour, 4, 8, 12, 24, 48 and 72 hours after reperfusion, in which the left eyes of the rats were in the ischemia/reperfusion groups and the right ones were in the treatment groups (bFGF 2 ?g intracameral injection). The expression of HSP70 was observed by strept avidin-biotin complex (SABC) immunohistochemistry. Results No HSP70 positive cells were found in normal group; a few of HSP70 positive cells were found 0 hour after reperfusion [20.8?4.5)cells/mm 2], and increased gradually until reached the peak 24 hours later [(111.2?4.4) cells/mm 2] and then decreased gradually. Few HSP70 positive cells were found 72 hours after reperfusion. The amount of HSP70 positive cells increased in treatment group at all time courses, and the peak time was earlier and longer than that in ischemia group. HSP70 positive cells distributed extensively in retinal ganglion cell layer and inner nucleous layer. The difference of the amount of HSP70 positive cells between the two groups was significant ( P
4.Research for difference and sense of B cell epitope human hepatitis virus B genotype-B and genotype-C
Guoqiang WANG ; Juxia NIU ; Ankui JIA
International Journal of Laboratory Medicine 2010;31(1):37-38,41
Objective To study the difference and sense of B cell epitope of S protein HBV genotype B and genotype C. Methods Search for amino acid sequence of S protein of HBV genotype C and genotype B from GcnBank for international network and forecast B cell epitope of S protein of HBV genotype band genotype C by DNAStar Bio-software and by Kolaskear-tongaonaka method through the international network. Results There are five B cell epitopes about amino acid of S protein of HBV genotype B and three HBV genotype C and antigenic index (1. 0798) of amino acid of S protein of HBV genotype B is higher than that of HBV genotype C (1. 0729). Conclusion Human hepatitis B genotype C is easier to develop chronic hepatitis than that of Human hepatitis B genotype B, It may be related with the fact that there arc fewer B cell epitopes and lower antigenic index about S protein in hu-man hepatitis B genotype C than that in human hepatitis B genotype B.
5.Limit test for 5-hydroxymethylfurfural in Yueju Baohe pills
NIU Chenjin ; AN Jie ; QIU Shuowen ; QU Jia
Drug Standards of China 2024;25(1):055-061
Objective: To establish an HPLC method to detect the limit of 5-hydroxymethylfurfural in Yueju Baohe pills.
Methods: A Zafex Acutfex PW-C18 column(4.6 mm×250 mm, 5 μm) was adopted with mobile phase consisted of acetonitrile-0.1% formic acid aqueous solution(2:98)at the flow rate of 1.0 mL·min-1. The column temperature was 40 ℃ and the detective wavelength was set at 284 nm.
Results: The linear range of 5-hydroxymethylfurfural was 0.491 9-122.98 μg·mL-1 (r=1.000). The average recovery(n=6) was 97.99% with RSD 0.61%. All of the RSDs for precision,repeatability and stability met the methodological requirements. According to the proposed limit, 17 of the 65 batches of samples did not meet the requirements, and the failure rate was 26.15%.
Conclusion: The established method is suitable for the limit test of 5-hydroxymethylfurfural in Yueju Baohe pills.There was a significant difference in the content of 65 batches of samples. It is necessary to investigate the limit of 5-hydroxymethylfurfural in Yueju Baohe pills.
6.Chromatography-efficacy relation study between HPLC fingerprints and allelopathic effect of Salvia miltiorrhiza aqueous solution on radish.
Min NIU ; Hong-Yan LIU ; Jia LI ; Yong-qing ZHANG
China Journal of Chinese Materia Medica 2015;40(5):885-888
To explore the effective components represented by fingerprint contributed to allelopathic effect of different Salvia miltiorrhiza aqueous concentration on seeds and seedlings of radish, grey relational analysis was used to establish the chromatography-efficacy relation. The results show that 15 peaks devote high allelopathic contribution to radish seeds and seedlings. The study will provide a new concept for allelochemicals screening and study.
Allelopathy
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Chromatography, High Pressure Liquid
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Pheromones
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analysis
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metabolism
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pharmacology
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Plant Extracts
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analysis
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metabolism
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pharmacology
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Raphanus
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drug effects
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growth & development
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Salvia miltiorrhiza
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chemistry
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metabolism
7.EFFECT OF PROSTAGLANDIN E1 ON SIL-6R and ITSβ strands IN SERUM IN PATIENTS WITH CHRONIC SEVERE HEPATITIS
Bingxi ZHOU ; Xiufeng NIU ; Jia SHANG ; Yukui LI
Chinese Journal of Postgraduates of Medicine 2001;24(6):16-18
Objective To observe the effect of prostaglandin E1 on soluble interleukin-6 receptor(SIL-6R) and soluble interleukin-6 receptor β strands (sgp 130) in serum in patients with chronic severe hepatitis.Methods Sixteen patients with chronic severe hepatitis accepted therapy with prostaglandin E1.Serum levels of SIL-6R and sgp130 were detected by enzyme linked immunosorbent assay (ELISA) method before and after therapy.Results The content of SIL-6R and sgp 130 in serum were increased significantly (P<0.001) in patients with chronic severe hepatitis compared with normal control group and decreased obviously (P<0.01) after therapy with prostaglandin E1 compared with before therapy,and the rate of delth were decreased obviously (P<0.01) in PGE1 therapy group.Conclusion The levels of SIL-6R and sgp130 in serum can reflect the degree of liver damage in patients with chronic severe hepatitis and guide the assessment of prognosis;PGE1 can correct the immune disorder,attenuating hepatocyte inflammation and necrosis.
8.Expression of aurora-A gene in ovarian cancer tissue and its clinicopathologic significance
Chunbo NIU ; Feiyong JIA ; Ying YUE ; Xu YAN ; Limei QU
Journal of Jilin University(Medicine Edition) 2006;0(04):-
Objective To detect the genetic amplification and protein expression characteristics of aurora-A in ovarian cancer and to interpret the role of aurora-A gene in course of onset,progression and regression phases of ovarian cancer.Methods The amplification of aurora-A gene was detected by quantitative PCR in 6 normal ovarian tissues and 8 ovarian cancer samples,and its protein expression was examined by immunohistochemistry in 6 normal ovarian tissues and 40 ovarian cancer samples,furthermore,the relationships between over-expression of aurora-A protein in ovarian cancer tissue and its pathologic classification,tissue differentiation,clinical phase,tumor proliferation trait and prognosis were analyzed.Results Quantitive PCR showed that aurora-A mRNA was significantly higher in 8 ovarian cancer samples than that in normal ovarian tissues(P0.05).Conclusion There are abnormal amplification and protein over-expression of aurora-A in ovarian cancer tissue,aurora-A probably play an important role in the onset and progression of ovarian cancer,and the novel biological treatment concerning aurora-A gene and its protein is probably a useful route for curing tumor.
9.Image features of helical CT in advanced schistosomiasis cirrhosis
Wenguang YANG ; Haitao WANG ; Jibo JIA ; Qingrong WANG ; Xuehua NIU
Chinese Journal of Schistosomiasis Control 2010;22(2):110,181,Ⅲ-
The abdominal CT findings of cirrhosis of advanced schistosomiasis in 262 cases were analyzed.All the cases had the calcification in liver in varying degrees,hypodense structure in junction areas and blood vessel in centre,calcification in portal vein system,calcification of colon and so on.The characteristics of CT performance can provide the evidence for defferential diagnosis.
10.Altered levels of serum miR-133a in acute coronary syndrome and stable coronary artery disease patients
Jia WU ; Jiaxi SONG ; Ting LIU ; Dongmei NIU ; Junjun WANG
Chinese Journal of Laboratory Medicine 2015;(10):686-690
Objective To investigate altered levels and clinical significance of serum miR-133a in patients with acute coronary syndrome ( ACS ) and stable coronary artery disease ( SCAD ) .Methods Retrospective study.Serum miR-133a levels were determined by TaqMan quantitative reverse-transcription PCR assay in 64 ACS, 62 SCAD patients who were admitted to Jinling Hospital from October 2011 to October 2012 and 70 normal controls who had contemporaneously visited Jinling Hospital for routine examination .The ACS and SCAD patients were diagnosed according to the European Society of Cardiology guidelines .Serum lipid/lipoprotein profiles , myonecrosis biomarkers and Gensini scores were also analyzed .The area under curve ( AUC) and 95%confidence interval ( CI) were calculated using ROC analyses .The odds ratio ( OR) and 95%CI were calculated using the multivariate logistic regression analyses .Results Compared with the controls [ΔCt:1.00 ±0.05], serum miR-133a levels were significantly increased in both ACS [ΔCt:2.34 ±0.24] (t=6.059, P<0.001) and SCAD [ΔCt:1.45 ±0.13] (t=3.265, P=0.001) patients.The miR-133a levels in ACS patients were significantly higher than in SCAD patients (t=3.133, P=0.002). Serum miR-133a were positively correlated with levels of creatine kinase MB ( CK-MB) ( r=0.402, P<0.001), cardiac troponin I (cTNI) (r=0.410, P=0.001) and Gensini scores (r=0.438, P<0.001). ROC curve analyses showed that the AUC of miR-133a for differentiating coronary artery disease (CAD) and controls was 0.717 (95%CI:0.645-0.788, P<0.001) and the AUC for differentiating ACS and SCAD was 0.667 (95% CI:0.573-0.761, P=0.001).Logistic regression analyses revealed that high miR-133a levels were closely associated with the presence of ACS ( OR=6.00, 95% CI:1.93 -18.67, P=0.002) and SCAD (OR=2.81, 95%CI:1.03-7.68, P=0.044), and also had statistical significance for differentiating ACS and SCAD (OR=2.13, 95% CI:1.20-3.78, P=0.010), after adjustment for the age, gender and serum lipid/lipoprotein levels.Conclusions Serum miR-133a levels were significantly elevated in CAD patients, and ACS patients exhibited the more significant increase .Serum miR-133a may be function as the potential biomarker for the disease assessment and judgement .