книги / Nanotechnology Read and Discuss

with pores marginally larger than the drug molecules, and surface nanoreceptors to provide drug release specifically to damaged tissue. Diabetes is one condition becoming more prevalent worldwide and where it is aimed to implant drugs beneath the skin to deliver as needed to maintain a steady blood glucose level. Infection is also receiving particular attention. Biodegradable nanobeads coated with specific molecules are able to mimic the ability of white blood cells to reduce inflamed blood cell walls by traveling through the bloodstream and target the inflammation site. Transport wound dressings have been developed from nano-structured membrane material which protects the skin from bacterial infection. Cells may be grafted onto the dressing to promote tissue regeneration. Another innovation is to incorporate drug delivery in the membrane to provide controlled medication. Bacteria infection itself may be treated with a new class of material called ‘peptide nanotubes’. These are about 3 nm in diameter and 6 nm long and are made to perforate bacterial membranes without harming healthy cells. In oncology nanoparticles can be directed at a tumor with accuracy to have negligible effect on the other tissues, and allow higher doses to be administered. Breast cancer is one such treatment where anti-cancer drugs are attached to the protein, albumin.

27. Complete the following sentences taken from the text with passive structures using the verbs in brackets:

1.Nanotechnology _______________ in medicine, via biomaterials. (use)

2.Release of drug molecules ______________ by nanoporous membranes. (control)

3.Drug release ___________________specifically to damaged tissue. (provide)

4.Drugs _____________beneath the skin to deliver a steady blood glucose level. (implant)

5.The inflammation site _____________________by biodegradable nanobeads able to reduce inflamed blood cell walls. (target)

6.The skin ____________________ from bacterial infection by nano-structured membrane material. (protect)

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7.Drug delivery can ____________________ in the membrane to provide controlled medication. (incorporate)

8.Bacteria infection may ____________________ with a new class of material called ‘peptide nanotubes’. (treat)

9.In oncology nanoparticles can __________________ at a tumor with accuracy, and allow higher doses to ____________________. (direct, administer)

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28. Answer the questions on the text.

Why is nanotechnology being increasingly used in medicine? How is drug release improved with the help of nanotechnologies? How do nanotechnologies help treat diabetes?

How can nanotechnologies change inflammation and wound treatment? What importance do nanotechnologies acquire in oncology?

29. Imagine you were donated a sum of money to establish a research center to foster the development of bio-nanotechnology. Describe your actions and what the research center will be like. Consider the following:

–the team of scientists

–the location and necessary equipment

–the departments and spheres of research

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Учебное издание

Енбаева Людмила Валерьевна, Панов Дмитрий Олегович

NANOTECHNOLOGY:

READ AND DISCUSS

Учебное пособие

Редактор и корректор И.Н. Жеганина

Подписано в печать 6.07.2012. Формат 60×90/16. Усл. печ. л. 4,0. Тираж 100 экз. Заказ № 131/2012.

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