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1289622木蟲 (正式寫手)
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[求助]
Dried blood spots
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| Dried blood spots是什么意思?外文文獻(xiàn)的血漿樣品處理幾乎都說是用這種方法,這種方法具體操作是怎樣的? |
木蟲 (著名寫手)
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我查的維普的資料 干血斑樣本用于HIV-1基因型耐藥性檢測(cè)的研究 摘要 目的研究干血斑(Dried blood spots,DBS)樣本用于人類免疫缺陷病毒Ⅰ型(HIV-1)耐藥性檢測(cè)的可行性。方法采集受檢者外周靜脈抗凝血,制備干血斑樣本,提取病毒RNA,逆轉(zhuǎn)錄套式聚合酶鏈反應(yīng)(RT-nestedPCR)擴(kuò)增HIV pol區(qū)基因序列,應(yīng)用Bioedit軟件分析整理后,提交theStanfordsoftware進(jìn)行耐藥序列分析及亞型分析。用Bayer 340bDNA核酸定量分析儀測(cè)定血漿病毒載量(VL)。結(jié)果血漿VL〉1000拷貝/ml的16例DBS和血漿(PLA)樣本,擴(kuò)增陽性率均為100%;血漿VL〈1000拷貝/ml的8例治療病人的PLA樣本,擴(kuò)增陽性率為25%(2/8);而DBS樣本擴(kuò)增陽性率為0(0/8)。DBS和PLA樣本用于亞型分析結(jié)果-致,11例樣本均為AE亞型。耐藥性分析結(jié)果,除了極個(gè)別其它突變位點(diǎn)有差異外,所有的蛋白酶抑制劑主要及次要耐藥相關(guān)突變,以及核苷類逆轉(zhuǎn)錄酶抑制劑(NRTI)耐藥突變和非核苷類逆轉(zhuǎn)錄酶抑制劑(NNRTI)耐藥突變完全相同。7例治療病人中,對(duì)NRTI(6/7)和NNRTI(5/7)耐藥率高,而且為多重耐藥。結(jié)論干血斑作為-種易采集、保存條件低、便于運(yùn)輸?shù)难獦颖荆梢蕴娲o脈采血,用于在-些實(shí)驗(yàn)設(shè)備條件略差的偏遠(yuǎn)地區(qū),以及難采血病人的耐藥性監(jiān)測(cè)和亞型分析 |

木蟲 (正式寫手)
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如下是我看的文獻(xiàn)的原文: Dried blood spots Dried blood spots as a sample collection technique for the deter- mination of pharmacokinetics in clinical studies can be used for the validation of a quantitative bioanalytical method. This tech- nique has been around for >40 years and is an easy way of col- lecting, shipping and storing blood samples. Widely used in new-born screening and therapeutic drug monitoring for trials in remote areas, it uses blood from animals/humans spotted onto collection cards, air dried and stored/shipped desiccated at room temperature. Disks are punched out of the DBS for quantitative analysis. The DBS were made by spotting 30 mL of the respective whole blood standard onto FTA cards (Whatmann, Sanford, USA) using a calibrated pipette. The samples were dried at room tempera- ture for 3 h. The samples were stored in a sealed plastic bag containing desiccant until analysis. The systematic extraction procedure was represented in Fig. 2. |
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