Aniek Setiya Budiatin, - and Maria Apriliani Gani, - and Chrismawan Ardianto, - and Samirah, - and Sahrati Yudiaprijah Daeng Pattah, - and Fitroh Mubarokah, - and Junaidi Khotib, - (2021) The impact of glutaraldehyde on the characteristics of bovine hydroxyapatite-gelatin based bone scaffold as gentamicin delivery system. Journal of Basic and Clinical Physiology and Pharmacology, 32 (4). pp. 687-691. ISSN 07926855

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Abstract

Objectives Biomaterials are widely used as drug delivery systems targeting bone tissue, such as to treat bone infectious disease. However, the addition of drugs to biomaterials weakens their mechanical properties. Crosslinkers are compounds that improve the mechanical properties of biomaterials. This study aims to determine the effect of glutaraldehyde (GTA) as a crosslinker on the characteristics of bovine hydroxyapatite-gelatin-based bone scaffold with gentamicin as antibiotics (BHA-GEL-GEN-GTA). Methods BHA-GEL-GEN-GTA scaffold with GTA solid content ranging from 0.1 to 1.4 wt% was made by direct compression. The compressive strength test was carried out using autograph. Scaffold degradation test was carried out by dissolving the scaffolds in PBS. Scaffold toxicity was performed by MTT assay using BHK-21 fibroblast cells. Results There was a significant difference in the scaffolds’ compressive strength due to differences in GTA volume. Scaffold crosslinked using GTA with solid content 0.1 and 0.2 wt% in 2 mL solution had higher compressive strength than those in 1 mL solution. Furthermore, GTA with solid content 0.6, 1, 1.2, and 1.4 wt% showed higher compressive strength than those without GTA. Degradation test results showed that GTA increased the percentage of weight loss and swelling of the scaffold. The scaffold exhibited a nontoxic profile in MTT assay. Conclusions GTA with optimum solid content shows great compressive strength, stable swelling profile with low percentage of scaffold’s weight loss, and is considered as nontoxic.

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