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[Local irritation study with isepamicin]
Abstract:
Local irritative effects of isepamicin (HAPA-B) were studied using muscle and blood vessel of Japanese White rabbits. Muscle irritation experiment was carried out with a single dosage of 100 mg HAPA-B, 100 mg amikacin (AMK), saline, 0.75% acetic acid or 6.0% acetic acid administered into musculus sacrospinalis. Vascular irritation experiment was carried out by allowing HAPA-B to remain in a sealed section of vena retroauricularis for 3 minutes after injection. In result, the muscular irritative activity of HAPA-B was less severe than 0.75% acetic acid but more than saline, and almost equal activity to AMK was observed. The HAPA-B caused very slight inflammation while thrombus was not formed. The vascular irritative activity was very little.
Insights
Isepamicin (HAPA-B) demonstrated minimal muscle and vascular irritation in rabbits, comparable to amikacin (AMK) and less than acetic acid, indicating a favorable local tolerance profile.
Area of Science:
- Pharmacology
- Toxicology
- Preclinical Research
Context:
- Aminoglycoside antibiotics are crucial in treating bacterial infections.
- Assessing local tissue irritation is vital for drug safety and administration routes.
- Japanese White rabbits are a standard model for local tolerance studies.
Purpose:
- To evaluate the local irritative effects of isepamicin (HAPA-B) on muscle and blood vessels.
- To compare the irritogenicity of isepamicin with amikacin (AMK) and acetic acid.
- To determine the safety profile of isepamicin for parenteral administration.
Summary:
- Muscle irritation experiments involved injecting isepamicin (HAPA-B), amikacin (AMK), saline, or acetic acid into rabbit musculus sacrospinalis.
- Vascular irritation was assessed by prolonged contact of isepamicin (HAPA-B) with the rabbit vena retroauricularis.
- Isepamicin (HAPA-B) exhibited mild muscular irritation, less than 0.75% acetic acid but more than saline, and similar to amikacin (AMK).
- Vascular irritation from isepamicin (HAPA-B) was minimal, causing slight inflammation without thrombus formation.
Impact:
- Results suggest isepamicin (HAPA-B) has a low potential for local tissue damage upon administration.
- The findings support the safety of isepamicin (HAPA-B) for intramuscular or intravenous use.
- This study provides essential data for the clinical development and application of isepamicin.