Technology Links to detect contamination of water and food with bacteria
Scientists announced in the field of technology, for their success in developing a new method reveals the presence of bacteria in water, food and biological samples, medical, rapidly.
The researchers explained that the new system uses the tags and the genetic material in bacteria, such as "no. Coli", to detect the presence of bacteria are accurate and fast, which may help to speed up the detection also for biological weapons used in military actions.
Experts said that tests the current ineffective in detecting germs, because you need a few days to show results, and the ability to distinguish between strains of different bacteria are extremely limited, unlike the new technology, which show results within one hour to three hours, and do not need to skill and professionalism to conduct and interpret the results.
Said Dr. Yishizquil Kashi, from the Faculty of Food Engineering and Biotechnology and Water Research Institute, who developed the technology in collaboration with colleagues at the Faculty of Natural Resources at the Institute of Virginia technological U.S., and the Department of Nutrition at the University of Wayne, that accurately identifying the bacterial strains may be crucial in the speed of diagnosis, and determine effective therapeutic strategies, for example, doctors need several days to determine the patient is infected urinary tract infection, which leads to permanent damage to the kidneys, but with the new technology has become patient abuse treatment can immediately within a few hours after the examination.
Experts believe that this technique improves the sensitivity and speed of detection and identification of harmful bacteria such as "no. Coli", and provides an ideal way for the microbiological examination of food and water sources contaminated, and protect against attacks using biological weapons.
During the development of the new system, the researchers found that the sequences of genetic material "De that any" bacterial contain thousands of duplicates sequential non-encrypted, or what is known as repetitive sequential simple, and vary their deals in each bacterial strain, giving them a footprint especially distinguish it from other, and can use current available techniques dedicated to the analysis of genetic material, to identify these bacterial fingerprints completely, also known as forensic specialists fingerprints at the crime scene.
The researchers pointed out that it has been preparing identification card for each type of bacteria on the computer, which allows accurate comparison and inclusive of all bacterial strains living in the world, in a manner easy and fast, to افتين that this method is promising in the field of biology, too, as it allows monitoring differences, which accumulate slowly in the bacterial genome over time, and study patterns of change and diversity between strains, to reach a closer look and a deeper understanding of bacterial evolution.
Experts have pointed to a research report published by the magazine (Genome Research), that the use of ID card bacterial will help to distinguish strains of bacteria, which owns degrees pathogenesis different, and cause symptoms clinical, as types of bacteria, which hurt the kidneys, for example, or types of Staphylococcus serial harmful to the heart.
The second step in the development of this system, in creating tools and automated devices recorded readings microbial genetic material automatically, to give quick results, both in laboratories and health centers or in doctors' offices.
في الإثنين 25 فبراير-شباط 2013 09:47:45 م