2.Effect of Liuwei Dihuang decoction on secretion of testosterone in the testis leydig cells of senescence accelerated mouse
Jun-ping, CHENG ; Yong-Xiang, ZHANG
Bulletin of The Academy of Military Medical Sciences 2001;25(1):42-44
Objective:To study the effect of Liuwei Dihuang decoction (LW) on secretion of testosterone in the testis leydig cells of senescence accelerated mouse (SAM). Methods:The level of testosterone in the testis leydig cells of SAM with aging and the effect of LW on the secretion of testosterone were observed using cultured testis leydig cells in vitro.Results:The level of testosterone in the testis leydig cells of SAMP8 with aging was significantly decreased and showed a significant difference compared with age-matched SAMR1. Chronic administration of LW (2.5 and 5.0 g/kg) for 5 months significantly ameliorated the secretion of testosterone in SAMP8 compared with control group. Conclusions:The secretory function of testis leydig cells was reduced in SAMP8 with aging. LW ameliorated the secretion of testosterone in the testis leydig cells,indicating that LW could antagonize or delay the deterioration of the testis leydig cells in SAMP8.
3.Study of coagulation alternation in patients with gastric cancer
Ping DONG ; Dingfeng SHEN ; Yong YANG ; Yong ZHANG
Chinese Journal of General Surgery 2001;0(09):-
Objective To study the alternation of coagulation and fibrinolysis in patients with gastric cancer(GC) . Method Platelet aggregation test(PAGT), prothrombin time (PT), activated partial thromboplastin time(APTT), tissue factor pathway inhibitor(TFPI), D-dimer and tissue plasminogen activator(t-PA: a)were detected in 48 GC patients(GC group) at two weeks pre- and post-operation respectively;and compared with non-tumor patients(control group). Results Compared with control group, in GC group,especially in GC patients with lymphatic metastasis,the PAGT increased (P
5.Spectroscopic studies on binding of beta-elemene to human serum albumin.
Miao ZHANG ; Lu-Yong ZHANG ; Xian-Zhe DONG ; Ping LIU
China Journal of Chinese Materia Medica 2014;39(11):2117-2120
Beta-Elemene is an antitumor drug which is isolated from the traditional Chinese medicinal herb Curcumae Phaeocaulis Rhizoma, it is the main component of elemene which is extracted from the plant and delivered via blood circulation after intravenous injection. The antitumor effect of beta-elemene in vitro and in vivo was definite, and beta-elemene could improve the patient immunity and no sever side effect, drug resistance or bone marrow suppression were found during the clinical studies. And human serum albumin (HSA) is a primary extracellular protein which has a high concentration distribution in blood plasma and has many characteristic physiological functions. Therefore, the binding of beta-elemene to protein may be very important for absorption, distribution, metabolism and elimination. Therefore, the study on the interaction of beta-elemene with drug-carrying protein is very important. In this work, molecular binding of beta-elemene to human serum albumin (HSA) was investigated by using spectrofluorometer. the binding constants suggested that a strong interaction and the formation of a complex between beta-elemene and HSA. This clearly implies that beta-elemene can be stored and removed by the proteins in the body. Furthermore, the fluorescence quenching results showed that the HSA fluorescence was quenched by beta-elemene through static quenching mechanism. Thermodynamic parameters showed that hydrophobic interactions play a role in the binding of beta-elemene to HSA. The negative deltaH(0) and positive deltaS(0) in case of beta-elemene therefore showed that electrostatic attraction play a role in the binding of beta-elemene to HSA.
Drugs, Chinese Herbal
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chemistry
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Humans
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Kinetics
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Protein Binding
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Serum Albumin
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chemistry
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Sesquiterpenes
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chemistry
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Spectrometry, Fluorescence
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Thermodynamics
6.Effects of Saikosaponin a on TNF-? release and its receptor expression in cultured hippocampal astrocytes induced by pentylenetetrazol
Wei XIE ; Ping KANG ; Zuowen ZHANG ; Linlin ZHU ; Yong BAO
China Journal of Traditional Chinese Medicine and Pharmacy 2005;0(07):-
Objective:To study e ects of Saikosaponin a(SSa) on tumour necrosis factor-alpha(TNF-?) release and its receptor expression in cultured hippocampal astrocytes induced by pentylenetetrazol(PTZ).Methods:The in vitro cultured primary hippocampal astrocytes were randomly divided into control group(group A),PTZ-induced group(group B)PTZ10mmol/L+SSa groups(group C and group D,the SSa concentrations were 1.25mg/L and 0.625mg/L respectively).The extracellular uid TNF-? level and the expression of tumour necrosis factor receptor type 1(TNFR1) in hippocampal astrocytes were respectively detected by ELISA and Western-blot after PTZ-induced 2 hours.Results:the TNF-? level and TNFR1 expression of group B were signi cantly higher than that of group A,group C and group D(P
7.The Clinical Observation on Naloxone and Trimetazidine in the Treatment of 40 Cases of Severe Viral Myocarditis.
Yong DONG ; Xizhou ZHANG ; Ping TIAN ; Wen ZHOU
Journal of Medical Research 2006;0(03):-
Objective To estimate the clinical efficacy of naloxone and trimetazidine in the treatment of severe viral myocarditis.Methods40 patients with severe viral myocarditis were randomly divided into two groups: control group(20cases) and treatment group(20 cases).All patients in control group and treatment group received conventional therapy.In adition,the patients in treatment group received naloxone and trimetazidine treatment.After 14 days,the changes of clinical symptoms were observed.In addition,serum creatinine kinase(CK)-MB and cardiac troponin I(cTnI) levels were measured.ResultsAlthough the symptoms,CK-MB and cTnI were significantly improved in two groups,but significant difference was still found between control group and treatment group(P
8.Effect of Guizhi Decoction on cardiac muscular collagen reconstruction in spontaneous diabetes rats
Xiao LI ; Ping JIANG ; Yunsheng XU ; Yong ZHANG ; Yuehua JIANG
China Journal of Traditional Chinese Medicine and Pharmacy 2005;0(08):-
Objective:This study was to study effect of keeping ying and weiqi in balance on cardiac muscular collagen Ⅰ,collagen Ⅲ,angiotensinⅡ in spontaneous diabetes rats,and provide new thoughts for prevention and treatment for diabetic cardiomyopathy.Methods:40 spontaneous diabetes rats were divided into four groups at random:spontaneous diabetes control group,diformin group,Guizhi Decoction group and Huanglian Jiedu Decoction group.Except control group,each group was given intragastric administration for 12weeks.Blood glucose,collagenⅠ,collagen Ⅲ,collagenⅠ/collagen Ⅲ,angiotensin Ⅱ were determined.Euzymelinked immunosorbent assay and radio-immuniy method were used.Results:Blood glucose in Huanglian Jiedu Decoction group and diformin group decreased;Compared respectively with diformin group and control group,collagenⅠdecreased obviously and collagen Ⅲ increased signifi cantly in Guizhi Decoction group,and the collagenⅠ/collagen Ⅲ decreased.Compared with diformin group and control group,cardiac muscular homogenate AT-Ⅱ contents decreased in both of Guizhi Decoction group and Huanglian Jiedu Decoction group.Conclusion:Guizhi Decoction can decrease the content of collagen Ⅰ,AT-Ⅱ and collagenⅠ/collagen Ⅲin cardiac muscular,and increase content of collagen Ⅲ,then prevent and treat cardiac muscular collagen reconstruction and myocardial fibrosis.Huanglian Jiedu Decoction can decrease the content of AT-Ⅱ,and decrease collagenⅠ/ collagen Ⅲ,collagenⅠ slightly,and can improve cardiac muscular collagen reconstruction.Keeping ying and weiqi in balance is a new thought for prevention and treatment for diabetic cardiomyopathy.
9.Advances in actinobacterial proteomics.
Yao ZHANG ; Ping XU ; Wenjun LI ; Yong TAO
Chinese Journal of Biotechnology 2014;30(7):1044-1058
Protein is the executor of physiological function, and direct embodiment of the life phenomena. Proteomics aims to systematically clarify all or parts of proteins' role and function in life movement. In post genome era, proteomics began to play more important role in life science field. Actinobacteria are closely linked to human production and life, which have produced many clinically important secondary metabolites, including antibiotics, antitumorals and enzymes. Actinobacterial systematics and its model organism Streptomyces coelicolor in 2001 genome sequence laid the foundation for further functional genomic studies. Actinobacterial proteomics was more directly and exactly to interpret the activity of life than genomics and transcriptomics, which grew much faster and received so much attention from scientists in the near years. Complex morphological differention, stronge environment adaptiveness, nitrogen-fixing capacity, metabolic mechanism, pathogenicity and natural produces' discovery were systematically reviewed in this study, which was expected to be the basis for promoting Actinobacterial proteomics study in the near future.
Actinobacteria
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genetics
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metabolism
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Genomics
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Proteomics
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Streptomyces coelicolor
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genetics
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metabolism
10.Treatment of dated closely laryngotracheal injury.
Xiang-ping LI ; Yong LIANG ; Wei ZHANG
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2006;41(10):790-791
Adult
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Humans
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Laryngostenosis
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surgery
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Larynx
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injuries
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Male
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Trachea
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injuries
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Tracheal Stenosis
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surgery
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Wounds and Injuries
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surgery