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Research & Development Research & Development
Jun. 21, 2010

Sysmex Receives "Invention Award" in 2010 National Commendation for Invention for Reagent for Analyzing Formed Elements in Urine
- World First Practical Application of Flow Cytometry to Automated Quantitative Analysis of Formed Elements in Urine -

  Sysmex Corporation (HQ: Kobe, Japan; President: Hisashi Ietsugu) has received the "Invention Award" in the 2010 National Commendation for Invention, sponsored by the Japan Institute of Invention and Innovation, for technologies related to its reagent for analyzing formed elements in urine.
  The invention relates to a reagent used in fully automated urine cell analyzers such as the UF-100 series and the UF-1000i , which enables the practical use of automated quantitative analysis, applying flow cytometry* to determine formed elements in urine.
  This enables the automatic detection and quantification of red blood cells, white blood cells, bacteria, epithelial cells and casts within approximately one minute, raising substantially the efficiency and precision of urinalysis compared with conventional methods.

  With conventional testing methods, stained residues of centrifuged urine are placed on a slide glass and observed under a microscope. As this process is complicated and thus requires testing experience, it places a significant burden on testing personnel and presents difficulties in terms of quantification and precision. In addition, the urine may contain impurities, which are outside the scope of measurement. Furthermore, as time elapses after the urine sample is taken, such formed elements as calcium salts and uric acid salts can separate. Testing automation required the differentiation and classification of such elements from those to be measured.

  The current invention resolves these problems through a combination of optimum reagent composites, conditions and dyes, allowing the measurement of the urine as sampled. The new reagent consequently enables automatic classification and quantification of formed elements (red blood cells, white blood cells, bacteria, casts and epithelial cells) in approximately one minute. As a result, this invention has markedly enhanced the urinalysis efficiency and precision. The new reagent is used in fully automated urine cell analyzers such as the UF-100 series and the UF-1000i , resulting in the world's first practical application of automated quantitative analysis of formed elements in urine through the use of flow cytometry.
  Five related associations, including the Japanese Urological Association and the Japanese Society of Nephrology, and a study group of the Ministry of Health, Labour and Welfare, have drawn up hematuria diagnosis guidelines. These guidelines indicate the importance of determining the red blood cell count in the measurement of hematuria and list flow cytometry as one method for counting the number of blood cells present in urine.
  In these ways, this invention represents a major contribution to improving the efficiency and quality of medical care and the standardization of tests. 
  Going forward, Sysmex will continue to promote research and development that contributes to breakthroughs in healthcare and improvements in science and technology. 
 

[Schematic]

Detection and classification of formed elements through a combination of an automated urinary cell analyzer and the new reagent: illustration of fraction (1)

Detection and classification of formed elements: illustration of fraction (2) (Channel for large element fraction)




* Flow cytometry: Method involving the flow dispersion of minute particles and the use of laser light to optically analyze the minute flows

 

National Commendation for Invention
  The National Commendation for Invention, first issued in 1919 as the Imperial Commendation for Invention, has through the support of such organizations as the Ministry of Education, Culture, Sports, Science and Technology; the Ministry of Economy Trade and Industry, the Japan Patent Office; Nippon Keidanren (Japan Business Federation); the Japan Chamber of Commerce and Industry; and the Japan Patent Attorneys Association been awarded to inventors, people who have succeeded in the practical application of inventions, people who have rendered distinguished services in the working of inventions and people who have encouraged innovation. By fostering and encouraging invention, the award system is designed to contribute to the advancement of Japanese science and technology and the promotion of industry.
  The sponsoring organization, the Japan Institute of Invention and Innovation, has since its establishment in 1904 sought to contribute to the promotion and advancement of science and technology through activities that encourage invention and diffuse and develop the industrial property system.


*Information contained in the press release is current as of the date of the announcement,
but may be subject to change without prior notice.

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