𧫠Antibiotics work by inhibiting the synthesis of the bacterial cell wall and reducing cross-linking of peptidoglycans.
π¬ Beta-lactam antibiotics, such as penicillins and cephalosporins, inhibit cell wall synthesis by targeting penicillin-binding proteins and reducing cross-linking of peptidoglycans.
π Other antibiotics, like daptomycin and polymyxins, alter cell membrane integrity, while sulfonamides and trimethoprim inhibit folic acid synthesis.
π Fluoroquinolones are a category of antibiotics that inhibit the DNA gyrus and topoisomerase enzyme, causing fragmentation of DNA and killing bacteria.
π Macrolides and clindamycin are antibiotics that inhibit the 50s ribosomal subunit, reducing bacterial growth but not killing them.
π Aminoglycosides and tetracyclines are antibiotics that inhibit the 30s ribosomal subunit, with aminoglycosides killing bacteria and tetracyclines reducing growth.
π Different antibiotics cover different types of bacteria
π For community-acquired pneumonia, a fluoroquinolone or a beta-lactam plus doxycycline or a macrolide is recommended
π¦ Vancomycin plus an anti-pseudomonal penicillin or cephalosporin is recommended for hospital-acquired pneumonia
π Carbapenems or anti-pseudomonal penicillins are the preferred antibiotics for gastrointestinal infections
π¦ Double coverage with metronidazole plus another antibiotic is an option for gastrointestinal infections
π Different antibiotics are effective for different types of infections.
π Penicillins, cephalosporins, carbapenems, polymixins, and linaselid can cause neurotoxicity.
β οΈ Certain antibiotics should be avoided during pregnancy due to potential teratogenic effects.
π Certain antibiotics have contraindications in specific patient populations, such as children and pregnant women.
π Some antibiotics can cause severe adverse reactions, such as gray baby syndrome, disulfiram reaction, and QT prolongation.
π¦ Bacteria can develop resistance to antibiotics through mechanisms such as reduced permeability, increased efflux, and altered target sites.
Bacteria develop resistance to antibiotics through various mechanisms, such as inactivating enzymes and reduced permeability.
Bacteria can transmit antibiotic resistance to other bacteria through vertical and horizontal gene transfer.
Risk factors for antibiotic resistance include exposure to multi-drug resistant pathogens, overprescription of antibiotics, and ingestion of antibiotics through food products.
π Antibiotics can be effective in treating infections, but bacteria can develop resistance to them.
π When prescribing antibiotics, it's important to consider the specific bacteria causing the infection and choose the appropriate medication.
π§ͺ Some bacteria have developed resistance mechanisms to certain antibiotics, such as altering the target binding site or reducing permeability.
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