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Effects of penicillins in vitro on mucociliary activity of rabbit trachea
Abstract:
The effect of eight penicillins on the mucociliary activity of rabbit trachea was tested in vitro. Carbenicillin and ampicillin had a minor inhibitory effect. Penicillin G and V and pheneticillin were a little more ciliestatic. Propicillin, cloxacillin and dicloxacillin were most toxic. The mucociliary toxicity increased with increasing lipophilicity of the penicillins and correlated well with their known neurotoxic in vivo effects.
Insights
Eight penicillins were tested for their effects on rabbit tracheal mucociliary activity. Higher lipophilicity correlated with increased toxicity, suggesting a link between penicillin lipophilicity and impaired mucociliary function.
Area of Science:
- Pharmacology
- Respiratory Physiology
- Drug Toxicology
Background:
- Mucociliary activity is crucial for airway clearance.
- Penicillins are widely used antibiotics with potential side effects.
- Understanding drug effects on respiratory function is important for patient safety.
Purpose of the Study:
- To evaluate the in vitro effects of eight different penicillins on rabbit tracheal mucociliary activity.
- To determine if there is a correlation between penicillin lipophilicity and mucociliary toxicity.
Main Methods:
- In vitro testing of mucociliary activity in rabbit tracheas.
- Exposure to eight distinct penicillin compounds.
- Assessment of inhibitory or ciliastatic effects.
Main Results:
- Carbenicillin and ampicillin showed minor inhibition.
- Penicillin G, V, and pheneticillin exhibited moderate ciliastatic effects.
- Propicillin, cloxacillin, and dicloxacillin demonstrated the highest toxicity.
- Mucociliary toxicity correlated positively with penicillin lipophilicity.
Conclusions:
- Penicillin toxicity on mucociliary activity varies among different compounds.
- Increased lipophilicity is associated with greater negative impact on mucociliary function.
- Findings suggest a potential link between penicillin lipophilicity and observed in vivo neurotoxic effects.