The Great 21st century world
Hello Guest !
Welcome to biology world by students !

Introduction To Antibiotics

Go down

Introduction To Antibiotics Empty Introduction To Antibiotics

Post by admin @ shivam on Sun Jan 18, 2009 8:58 pm

Humans, and our domestic animals, can serve as hosts to a wide variety of disease-causing organisms (pathogens):

* bacteria
* viruses
* fungi
* protozoans
* helminths (worms).

This page will examine only those chemical agents that are used to combat bacterial pathogens.
The Problem
There are many chemicals that are lethal to bacteria — cyanide does a good job — but they cannot be used to cure infections because they are lethal to the host as well. The problem, then, is to find substances that attack a metabolic pathway found in the bacterium but not in the host. This is not an insurmountable problem for bacterial pathogens because they differ in many respects from eukaryotes.
The Solution

* Natural products. A number of natural products, penicillin for example, have been discovered that are antibiotics suitable for therapy. They were originally discovered as secretions of fungi or soil bacteria. Soils are complex ecosystems, and it is not surprising that its inhabitants have evolved chemical defenses against each other.

# Semi-synthetic products.
These are natural products that have been chemically modified in the laboratory (and pharmaceutical facility) to

* improve the efficacy of the natural product
* reduce its side effects
* circumvent developing resistance by the targeted bacteria
* expand the range of bacteria that can be treated with it


Introduction To Antibiotics Ubda7389

Introduction To Antibiotics Ubd2029fs5
admin @ shivam
admin @ shivam

Male Number of posts : 254
Age : 24
Location : Bareilly , UP
Points : 37950
Reputation : 20
Registration date : 2009-01-09

View user profile

Back to top Go down

Back to top

- Similar topics

Permissions in this forum:
You cannot reply to topics in this forum