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1.
随着代谢组学和现代分析技术、生物信息学技术的不断发展,药物代谢组学在肿瘤诊治方面的应用也日益成为研究热点,特别是在肿瘤药物疗效判断、毒性作用、耐药预测、个性化用药以及肿瘤标志物发现上有着重要作用。本文就药物代谢组学的概念、研究方法及其在肿瘤诊治中的应用等方面的研究进展进行综述。  相似文献   

2.
代谢组学是继基因组学、转录组学及蛋白质组学之后发展起来的一门组学学科,其研究对象是生命活动链条下游的代谢物的集合---代谢组。虽然已经经过了十几年的发展,但代谢组学在实验技术、数据分析及结果的注释各个环节都还有许多问题需要加以解决。任何外源性物质的作用都会导致生物体内代谢平衡的破坏,从而使得体内代谢物质发生变化。因此,利用代谢组学技术研究药物的毒理学性质自然就成为代谢组学的主要应用领域之一,也是应用最早的领域。代谢组学在先导化合物的早期毒性筛选、药物的临床前毒性以临床药物的毒性评价等方面都已经得到了广泛的应用,所研究的对象涵盖了人体、实验动物、细胞和斑马鱼等替代模型。代谢组学结果的深入阐释也在发展之中。本文对代谢组学技术及其在毒理学研究中的应用进展进行了综述。  相似文献   

3.
代谢组学分析技术及代谢物鉴定   总被引:2,自引:0,他引:2  
近年来,代谢组学技术在众多科学领域得到了广泛的应用。代谢组学研究的关键在于对大量小分子代谢产物进行快速、准确的分析鉴定,这在很大程度上依赖于相关技术的进步。磁共振、质谱、色谱以及毛细管电泳等技术的发展和联用,使得代谢组学的广泛应用成为可能。磁共振和质谱是代谢组学研究中最重要的两个技术平台,对代谢产物进行明确的鉴定是代谢组学研究的根本任务。本文就代谢组学相关分析技术及代谢物鉴定的研究进展作一综述。  相似文献   

4.
代谢组学是继基因组学、转录组学和蛋白质组学等以后新近发展起来的一门新学科,主要是定性定量分析、研究某一生物或细胞内所有低分子质量的代谢产物。近年来,代谢组学技术发展迅猛,其研究领域主要覆盖了药物毒理学研究、临床疾病诊断、微生物与植物学研究、食品营养科学及药物开发等。通过查阅文献资料,笔者概述了代谢组学技术在肝脏疾病研究中的应用近况。  相似文献   

5.
代谢组学(metabolics)作为系统生物学的重要组成部分,定量对生物体内广谱代谢产物进行分析和发现不同状态下代谢产物的变化,从而明确生物体不同代谢产物与相应生理、病理状态的关系。代谢组学研究经历了快速的技术进步,已广泛应用于生命科学各个领域,为诠释生命现象、探寻疾病机制、研发药物、发现生物学标志物等提供了强大的技术平台。随着代谢组学相关研究的不断深入以及环节升级与完善,有望成为指导人类疾病诊断和治疗的有效手段。本文就代谢组学的特点、研究方法、应用以及在应激损伤、疾病研究中的作用做一综述。  相似文献   

6.
中药和天然产物在生物体内通常发生广泛代谢,因其代谢途径的复杂性以及多组分、多靶点、整体调节作用的特点,现已将代谢组学应用于中药代谢产物及其药效机制的研究中。但是,由于代谢组学研究要求获得生物体液中大量外源性与内源性代谢物信息,这就对分析技术提出了很高的要求。本文综述了中药代谢物和代谢组学研究中常用的液质联用技术,并对PubMed检索到的23篇相关文献进行数据归纳与比较分析,重点讨论不同种类液质联用技术在中药代谢组学研究应用中的优缺点,指出UPLC-Q-TOF/MS的优势,以期为中药代谢组学研究提供新思路。  相似文献   

7.
目的 介绍代谢组学研究技术的最新进展。方法 综合国内外文献报道,介绍当前代谢组学研究中样品制备、仪器分析技术、数据处理方法和结果分析的最新研究概况。结果 代谢组学研究技术取得了一定进步,拓宽了代谢组学的应用范围。结论 自动化、标准化、整合化和完整化将是代谢组学研究技术的发展方向。  相似文献   

8.
目的:比较非靶向与靶向代谢组学在发现妊娠期糖尿病(gestational diabetes mellitus,GDM)生物标志物中的异同。方法:采集20例GDM患者及20例正常孕妇的血清样本,同时进行非靶向代谢组学和靶向代谢组学分析,比较两种技术的质控结果、代谢物检测情况及差异代谢物的诊断效能。结果:两种技术的质量控制均较好,非靶向代谢组学分析的系统稳定性更强。正交-偏最小二乘判别分析模型显示,靶向代谢组学分析的样本分布趋势能更好地区分GDM患者。比较两种方法检测到的代谢物种类,非靶向代谢组学分析检测到639种,主要为脂质,而靶向代谢组学分析仅检测到268种,主要为氨基酸及多肽类似物。靶向代谢组学分析检测到的柠檬酸的诊断效能最高,曲线下面积为0.983。结论:两种技术都可以筛选出具有一定诊断效能的生物标志物,非靶向代谢组学分析可覆盖更广泛的潜在生物标志物,靶向代谢组学分析筛选出的生物标志物具有更高的诊断效能,二者在生物标志物的筛选方面可以优势互补。  相似文献   

9.
代谢组学是在基因组学和蛋白质组学的基础上建立起来的、用于研究和分析生物系统的组学学科。近年来,使用代谢组学研究中药的方法逐渐得到了推广和使用。本文分析了代谢组学的概念和特点,并对代谢组学在中药现代化研究中的应用情况进行了探讨。  相似文献   

10.
1代谢组学发展简史回顾 代谢组学(metabonomics)是继基因组学、转录组学和蛋白质组学之后的又一门新兴的组学技术,是系统生物学研究不可或缺的重要基础学科之一。代谢组学的概念最早来源于上世纪70年代代谢轮廓分析(metabolic profiling).1986年Niwa在色谱杂志发表了一篇关于代谢轮廓分析的气相色谱和质谱联用技术(gas chromatograph—mass spectrometer,GC-MS)应用的长篇综述。随着基因组学的发展,  相似文献   

11.
Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P< 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P< 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.  相似文献   

12.
Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P < 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (>0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P <0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P < 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.  相似文献   

13.
Objective: To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods: SD rats served as both donors and recipients. 4℃ sodium lactate Ringer's was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava (IVC) inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results: Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion: This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.  相似文献   

14.
Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.  相似文献   

15.
Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.  相似文献   

16.
A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care(~'4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.  相似文献   

17.
Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.  相似文献   

18.
Journal of Nanjing Medical University (English Edition) JNMU, sponsored by Nanjing Medical University, was established in 1987. It is a bimonthly comprehensive English medical journal published locally and abroad.Since 2007, Journal of Nanjing Medical University (English Edition )was granted Elsevier the full publishing and distribution rights worldwide for the Electronic Edition, excluding the People's Republic of China.  相似文献   

19.
Objective To measure Derpl and Blot5 allergen levels in asthmatics' homes in Hongkong.Methods Seventy houses were enrolled for a mite indoor environment study. Dust samples were obtained from two sites of each patients' house: bed and floor. Derpl and Blot5 levels were quantified by a two-site monoclonal antibody-based ELISA technique.Results The levels of Derpl allergens found in bed (geometric mean (GM) 3.43 μg/g of dust; 95%CI, 1.89-4.96 μg/g)and on the floor (GM 1.12 μg/g of dust; 95%CI, 0.71-1.53 μg/g) indicated significant differences (P=0.005). However, the levels of Blot5 allergens found in bed (GM 19.00 μg/g of dust; 95%CI, 0.89-38.90 μg/g) and on the floor (GM 6.14 μg/g of dust; 95%CI, 0.40-11.90 μg/g) showed no statistically significant difference. In addition, in regards to the exposure index for Derpl and Blot5 allergens found in bed and on the floor, 17.6% in bed and 8.6% on the floor had levels of Blot5 ≥ 10 μg/g of dust, higher than those obtained for Derp1 (7.2% and 0% in bed and on the floor respectively, P< 0.05); higher percentages in bed and on the floor (25.0% and 35.7%) were observed for levels of Blot5 =0 μg/g of dust as compared with Derpl in bed and on the floor (4.3% and 14.5% respectively, P< 0.05).Conclusions Derpl and Blot5 are the major allergens found in this regional study, Blot5 is a more potent allergen in Hongkong, probably reflecting the high level of exposure to Blomia tropicalis (Bt). Bt and Dermatophagoides pteronyssinus (Dp) allergens should be included for precise diagnosis and effective immuno-therapeutic treatment of mite allergy in Hongkong.  相似文献   

20.
ANTI-PROLIFERATION EFFECT OF ORIDONIN ON HL-60 CELLS AND ITS MECHANISM   总被引:4,自引:0,他引:4  
Objcetive To investigate the anti-proliferation effect of oridonin on leukemic HL-60 cells and its mechanism. Methods HL-60 cells in vitro in culture medium were given different concentrations of oridonin. The inhibitory rate of cells were measured by microculture tetrazolium (MTT) assay, cell apoptotic rate was detected by flow cytometry (FCM), morphology of cell apoptosis was observed by hoechst 33258 fluorescence staining, and the activity of telomerase was detected using telomere repeat amplification protocol (TRAP) PCR-ELISA before and after apoptosis occurred. Results Oridonin could decrease telomerase activity, inhibit growth of HL-60 cells, and cause apoptosis significantly. The suppression was both in time- and dose-dependent manner. Marked morphological changes of cell apoptosis including condensation of chromatin and nuclear fragmentation were observed clearly by hoechst 33258 fluorescence staining especially after cells were treated 48-60 hours by oridonin. Conclusions Oridonin has apparent anti-proliferation and apoptotic effects on HL-60 cells in vitro, decreasing telomerase activity of HL-60 cells may be one of its most important mechanisms. These results will provide strong laboratory evidence of oridonin for clinical treatment of acute leukemia.  相似文献   

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