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Why the Bacteria are Resistant to Antibiotics?

Why the Bacteria are Resistant to Antibiotics?
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Why the Bacteria are resistant to antibiotics?

Bacteria do not react to antibiotics; these ineffective against certain bacteria which are more resistant each day samples.

Antibiotics are becoming less effective for several reasons. The misuse of these drugs, which are not always properly prescribed; Patients who miss a dose, giving the strongest bacteria time to survive; or taking them when there is no need, for example against viruses. Besides lack of innovation by the pharmaceutical industry: between 1940 and 1962 fifteen classes of antibiotics they were discovered, while from that time until today only three discovered.

WHO he fired a wake-up call to governments around the world to encourage investigations against the phenomenon of bacterial resistance.

How to become more resistant bacteria

Improper use of antibiotics has led bacteria became more “intelligent” have evolved finding ways to defend themselves against antibiotics by mutating their DNA. The mechanism is natural selection: the normal bacteria die, but those who have undergone a genetic mutation able to help them survive the antibiotic multiply and create new more resistant generations.

Many bacteria are able to escape the toxic effect of the antibiotic through the pores of their own cell walls, or may enter into a state of lethargy, which do not grow or reproduce, but are activated when drug action ends.

How Antibiotics work in the body?

Antibiotics may be natural, modified or entirely synthetic origin. They are divided into different classes depending how destroy bacteria, and based on its spectrum of action, ie the ability to attack only a bacterium or strain. Antibiotics can be bacteriostatic, when prevent the growth of bacteria; or bactericides, when causing the death of the bacteria.

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Penicillin, for example, has bactericidal action and similar antibiotics to it have the advantage of being less toxic because human cells have walls as bacteria and therefore are not attacked by the drug.

Why Antibiotics will not help to fight virus?

Antibiotics act specifically on vital structures of bacteria, such as cell walls and some enzyme systems. These structures are absent in the virus, unlike bacteria, they can not live without a host organism “pay” their fundamental instruments to perform vital functions.

The only way to combat a virus with a vaccine or an antiviral drug that acts by preventing the attack on the cells. There are also drugs that block replication of the virus (as the antibiotics with bacteria) but are often toxic to the body because they act on human cells that the body uses to multiply.

Researchers look for new Antibiotics

The HT61 is a new type of antibiotic, instead of acting for the multiplication of bacteria, killing the cell walls pierces the cell although not in reproductive stage.

Another solution would be to “wake up” chemically dormant microorganisms to force them to work and absorb the substances that surround them, including the antibiotic.

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