Nanoscience may change medical technology

Written by ASHOK B SHARMA | Visakhapatnam, Jan 5 | Updated: Jan 6 2008, 06:09am hrs
Ancient India might not have heard of the word nanoscience, but items like Persian Khanjar and the Damascus steel, made out of iron ore procured from India and processed in traditional way, were made by unconsciously applying the nano technology, said Nobel Laureate Robert Curl.

Speaking at a plenary session in 95th Indian Science Congress, Curl said, Nanoscience today holds a great prospect for augmenting medical therapy, particularly in drugs delivery at the critical targeted points.

He said non-particles, which will act as a capsule carrying drugs will be biodegradable and safe and will not cause any harm to the human body.

Among other aspects where nanoscience can help was the creation of enzymes synthesing molecules, which will produce enzymes at the rate required by the human body. This process of producing enzymes will be possible in the near future, he said and added that at present enzymes were produced artificially without any controls.

For example, the problem of drugs delivery to the retinal cell layers of the eye. The fluid eyeball throws out the medicine. The nano capsule can directly delivery it directly to the retinal cell layers, said Jamboor K Viswanath, associate dean in the Graduate School of Biomedical Sciences, Texas.

He said the US FDA has approved Poly DL Lactide C-glyolide (PLGA) as an effective, sustainable, stable and biodegradable vehicle for drugs delivery. The PLGA has very little cytotoxin effect, he said. Nanoscience could be deployed to deal with prostrate cancer and cellular mitigation, he said.