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【其他】zz德研研制出现场诊断微型实验室 化验只需30分钟 已有1人参与
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http://www.analchem.cn/article.php?id=2625&optionid=75 据德国弗劳恩霍夫研究所网站报道，近日，该所科学家成功研制出一套微型实验室系统，可在现场进行复杂的生物学化验，并在30分钟内得到结果。该系统有望在不久后投放市场。 随着医疗技术的发展，许多疾病已可以通过实验室测试确诊。然而，患者们不得不面对一个现实，即从样本送去化验，到分析结果返回到医生手中，需要等待很长时间，有时甚至是几天到一两周。而对很多疾病来说，快速诊断是治疗取得成功的关键。不过未来，患者们也许只需在诊室里等待很短的时间就可以拿到化验结果。这一切得益于弗劳恩霍夫7个研究所的研究人员共同合作的一个项目，他们为体外诊断开发了一个微型的模块化平台，针对如血液和唾液等不同的生物样本，医生可直接在诊室进行快速化验。 这一微型实验室的核心部件是一个可与不同传感器匹配的一次性塑料测试盒。检验时，医生注入相应的试剂，试剂中含有某些物质，可证实样本中是否含有对应的抗原。针对不同的问题，检测平台提供不同的化验方法。执行检验时，医生将相应的样本物质注入测试盒，测试就会自动进行。研究人员表示，他们已经优化了化验过程，可在一个单独的分析步骤中做到多达500项平行检测反应。因此，即便是复杂的分析，医生也能很快得到化验结果。 由于该体外诊断平台模块化的设计原则非常灵活，研究人员认为它几乎适用于所有生物问题。将来，通过开发新的模块，或许还能实现样本在DNA层面的检测。除去医疗市场外，该平台还可应用于食品分析或兴奋剂检测等领域。 http://www.sciencedaily.com/releases/2010/03/100319210434.htm ScienceDaily (Mar. 19, 2010) — Many illnesses can be reliably diagnosed through laboratory tests, but these in vitro analyses often use up valuable time. A system developed by Fraunhofer research scientists, which can carry out complex analyses on the spot, will soon be ready for the market. "We’ll just have to wait for the results of the laboratory test results." These words are familiar to many patients. It then usually takes several days for specimens to be sent to the laboratory and analyzed and for the doctor to receive the results. For many illnesses, however, a speedy diagnosis is crucial if the treatment is to be successful. In future, the patient might only have to sit in the waiting room for a few minutes until the results are ready. In a joint project, researchers from seven Fraunhofer institutes have developed a modular platform for in vitro diagnosis which enables various types of bioanalysis – of blood and saliva for example – to be conducted in the doctor’s surgery. "Thanks to its modular design our IVD platform is so flexible that it can be used for all possible bioanalytical tasks," states Dr. Eva Ehrentreich-Förster from the Fraunhofer Institute for Biomedical Engineering (IBMT) in Potsdam-Golm. The core element of the mini-laboratory is a disposable cartridge made of plastic which can be fitted with various types of sensor. For an analysis the doctor fills the cartridge with reagents – binding agents which indicate the presence of certain substances such as antigens in the specimen material. Various tests or assays are available for different types of analysis. To perform an assay, the doctor only has to place the relevant substances in the cartridge and the test then takes place automatically. "We have optimized the assays so that up to 500 assay reactions can be conducted in parallel in a single analysis step," explains Dr. Ehrentreich-Förster. Even in the case of complex analyses the doctor obtains a result within about 30 minutes. A new module on the reverse side of the cartridge also makes it possible to analyze the specimen material at DNA level. Once the cartridge has been prepared, the doctor places it in the measurement system. The results can be read out with either optical or electrochemical biosensors. The researchers have installed a readout window for both methods in the measurement system, which features a bypass through which the specimen is pumped. In addition to medical applications, Dr. Ehrentreich-Förster has other markets in her sights. "The IVD platform is also suitable for food analysis and doping checks." The mini-laboratory will soon be ready for the market. The scientists are presenting the IVD platform at the Analytica trade show in Munich from March 23 to 26. |
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