**Azlocillin: An Overview**
**Definition:**
Azlocillin is a semi-synthetic penicillin antibiotic belonging to the β-lactam class. It is commonly used in its sodium salt form (Azlocillin Sodium) and is known for its broad-spectrum antibacterial activity, particularly against Gram-negative bacteria, including *Pseudomonas aeruginosa*.
**Function:**
Azlocillin works by inhibiting bacterial cell wall synthesis, leading to the destruction of susceptible bacteria. It exhibits strong activity against *Pseudomonas aeruginosa* and other Gram-negative pathogens, including strains resistant to other antibiotics like gentamicin and carbenicillin. It is also effective against some Gram-positive bacteria and anaerobic organisms.
**Applications:**
Azlocillin is widely used in clinical settings for:
1. **Severe Infections:** Treatment of sepsis, meningitis, endocarditis, and peritonitis caused by susceptible bacteria.
2. **Respiratory and Urinary Tract Infections:** Effective against infections in the lower respiratory tract, urinary tract, and gastrointestinal tract.
3. **Surgical and Burn Infections:** Used for prophylaxis and treatment of infections in surgical wounds and burn injuries.
4. **Combination Therapy:** Often combined with aminoglycosides for synergistic effects against severe infections, particularly those caused by *Pseudomonas aeruginosa*.
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