Effects of gold nanoparticles and apricot seeds on bone healing in New Zealand rabbits

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Objectives Suboptimal osseointegration of implant materials is linked to oxidative stress and compromised bone regeneration. Gold nanoparticles (Au NPs) function as anti-inflammatory and osteogenic agents, promoting bone growth by reducing cell damage and enhancing cellular activity. Apricot seeds contain amygdalin, a natural antioxidant and osteogenic substance. This study aimed to evaluate the impacts of Au NPs and apricot seed extract on bone healing in a rabbit model. Methods Twelve adult male New Zealand white rabbits were assigned to three groups: untreated (control), Au NPs treated, and apricot seed treated groups. Six holes were surgically drilled in the tibiae (right/left) of each animal. Each hole was injected with 0.3 mL of Au NPs or apricot seed liquid extract. Histological analysis was performed after 7 and 14 days of healing using hematoxylin and eosin (H&E)-stained bone samples, which were cut around the holes in all test animals. Light microscopy and S-EYE 2.0 software were used to count blood vessels, osteoblasts, osteocytes, and bone marrow spaces. Results Local application of apricot seeds and Au NPs decreased vascularization and bone marrow spaces, and stimulated bone-forming cells, where Au NPs were more effective. Treatment with Au NPs significantly lowered the number of blood vessels after 14 days to the smallest value (2.6 ± 0.96) recorded under all trea

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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