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Antibiotic Resistant Bacteria

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Antibiotic Resistant Bacteria- 750 words Essay Introduction In the past several decades or so, antibiotics use has been crucial in the battle against infectious sickness caused bacteria and other microorganisms. Many diseases that once killed people can now be now treated effectively with antibiotics. Antibiotics caused a dramatic rise in the average life expectancy. However, disease-causing microbes that have become resistant to antibiotic drugs are an increasing public health problem. Wound infections, tuberculosis, septicemia and childhood ear infections are some of the few diseases that have become hard to treat with antibiotics. One part of the problem is those bacteria and other microorganisms that cause infections developing several ways to resist antibiotics. Vaccines are also very helpful in the processes because they very effective. Vaccines are the reason small pox has been extinct and only two of them are kept: one in USA and one in Russia. Some organisms are resistant to all antibiotics and can be only treated with experimental or potentially toxic drugs. ...read more.


Bacteria do this by changing the permeability of their membranes or by reducing the number of channels available for drugs to diffuse through * Changing the targets- Many antibiotics work by sticking to their target and preventing it from interacting with other molecules inside the cell. Some bacteria respond by changing the structure of the target (or even replacing it within another molecule altogether) so that the antibiotic can no longer recognize it or bind to it. * Destroying the antibiotics- Rather than simply pushing the antibiotics aside or setting up molecular blockades, some bacteria survive by destroying their enemy directly. For example, some kinds of bacteria produce enzymes called beta-lactamases that chew up penicillin. * Mutating Antibiotic-Method of resistance Chloramphenicol-reduce uptake into cell Tetracycline- active efflux from the cell B-lactams, Erythromycin, Lincomycin- eliminates or reduces binding of antibiotic to cell target B-lactams, Aminoglycosides, Chloramphenicol- enzymatic cleavage or modification to inactivate antibiotic molecule Sulfonamides, Trimethoprim- metabolic bypass of inhibited reaction overproduction of antibiotic target (titration) ...read more.


All these unnecessary prescriptions are bad for your health because as Associate Professor Collignon Says "Antibiotic resistance is an inevitable consequence of [antibiotic] use, the more you use them the more resistance you will get." There so many challenge to overcome before we can cure the resistant bacteria as it is evolving and learning more and more on how to defend it self. Conclusion In conclusion bacteria is evolving therefore learning how to fight against our antibiotics. As they generations pass we will also know how to fight the evolved forms of the bacteria as we learned already in the past how to fight bacteria and other microorganisms. And this cycle will continue for ever until a one of the microorganism or we die. And we also find new bacterial diseases which we have no antibiotic for and some virus is also incurable or we have found no cure. But all is well and due to all the help of antibotics an cures peoples life span has increased by 20% from the 19th century. Number of words: 810 Sources http://www.abc.net.au/science/slab/antibiotics/resistance.htm http://www.cnbc.com/id/42644703 http://en.wikipedia.org/wiki/Antibiotic_resistance http://www.enotes.com/history-fact-finder/medicine-disease/when-were-antibiotics-invented http://www.neli.org.uk/arfaqs.nsf/c142977c99209f3680256c91003fdf4a/48ec067b5c3fca8780256caa004b3806?OpenDocument http://www.sciencedaily.com/releases/2010/10/101005104448.htm http://www.answersingenesis.org/articles/am/v2/n3/antibiotic-resistance-of-bacteria http://thescienceofacne.com/how-do-bacteria-become-resistant-to-antibiotics/ ...read more.

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Marked by teacher Luke Smithen 13/08/2013

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