What are the three major classes of antibiotics?

Major Classes of Antibiotics Major Classes of Antibiotics Name Examples Spectrum Mode of Action Biological Source Beta-Lactams

Why are antibiotics used as a last resort?

Potent antibiotics, typically used as drugs of last resort. All contain 2-oxazolidone somewhere in the structure. MoA: inhibit protein synthesis by bacteria, occasionally leading to cell death. Resistance evolves rapidly.

What kind of antibiotics are used in low income countries?

All contain a lactam ring. Family of over 20 antibiotics; all contain aminosugar substructures. Commonly used in low-income countries. Distinct individual compound. MoA: Inhibit protein synthesis, which prevents growth. Not a first-line drug in developed nations anymore due to increased resistance and safety concerns.

Are there any antibiotics that are man made?

However, some important classes of antibiotics (including the sulfa antibiotics, the quinolones, and the oxazolidinones) are man-made, originating totally from synthetic chemical operations. 13 14 15 16 I. Penicillins A. History 1.

Why are antibiotics classified as bacteriostatic of bactericidal?

Antimicrobials used in therapy are either bacteriostatic of bactericidal and on the basis of their site of action, their chemical structure and nature can be divided into easily understandable groups. Understanding of classification also help to understand the mechanism adopted by microbes for becoming resistant.

How are antibiotics similar in structure and activity?

molecular structures, mode of action and spectrum of activity (Calderon and Sabundayo, 2007). Others include route of administration (injectable, oral and topical). Antibiotics within the same structural class will generally show similar pattern of effectiveness, toxicity and allergic- potential side effects.

What kind of antibiotics do we use to kill bacteria?

Definition: Antibiotics are molecules that kill, or stop the growth of, microorganisms, including both bacteria and fungi. Antibiotics that kill bacteria are called “bactericidal” Antibiotics that stop the growth of bacteria are called “bacteriostatic” B. Why do we want to kill bacteria? Types of bacteria: Gram stain