ANGIOGENIC POTENTIAL OF THE HYDROXYAPATITE-BASED COMPOSITES LOADED WITH PLANT EXTRACT AND NANOPARTICLES
Abstract
Introduction. The growing ageing population and increasing incidence of bone-related disorders have intensified the demand for advanced regenerative materials. Hydroxyapatite-based composites enriched with metal nanoparticles and plant extracts show great promise due to their biocompatibility, antimicrobial activity, and ability to promote tissue regeneration. This study aimed to evaluate how such functionalized composites influence vessel formation using the chick chorioallantoic membrane (CAM) model.
Methods. Hydroxyapatite-based composites were prepared by incorporating silver nanoparticles (10 µg/g) and pomegranate peel extract (30 mg/g) into hydroxyapatite, followed by stirring and drying. Supernatants of the obtained composites were applied onto the chick chorioallantoic membrane (CAM) of fertilized eggs on embryonic day 10 to assess angiogenic activity. After 24–48 h incubation, CAM images were taken and analyzed morphometrically using ImageJ to quantify vessel density and bifurcation points. Statistical significance was evaluated with GraphPad Prism (p < 0.05). The study was approved by the Local Ethical Committee (Decision No. 3/10, 16 October 2025).
Results. Treatment with AgNPs loaded hydroxyapatite caused vessel dilation and tortuosity, whereas composites containing pomegranate extract—alone or combined with AgNPs—showed minimal vascular alterations. By day 12, a significant rise (p < 0.05) in vessel number was detected only in the group treated with composite containing pomegranate, highlighting its angiogenic activity, while the proportion of bifurcated vessels remained unchanged across all groups.
Discussion. This study evaluated hydroxyapatite-based composites functionalized with silver nanoparticles (AgNPs) and pomegranate peel extract. Overall, the study demonstrates that the angiogenic response of hydroxyapatite-based composites depends on their functional components: silver nanoparticles suppress vessel formation, whereas pomegranate peel extract enhances it, highlighting the importance of composition in designing biomaterials for regenerative applications.
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References
Lee SS, Du X, Kim I, Ferguson SJ. Scaffolds for bone-tissue engineering. Matter. 2022;5(9):2722-2759. https://doi.org/10.1016/j.matt.2022.06.003
Noori A, Hoseinpour M, Kolivand S, Lotfbakhshaiesh N, Ebrahimi‐Barough S, Ai J, Azami M. Exploring the various effects of Cu doping in hydroxyapatite nanoparticle. Sci Rep. 2024;14:3421. https://doi.org/10.1038/s41598-024-53704-x
Ielo I, Calabrese G, De Luca G, Conoci S. Recent advances in hydroxyapatite-based biocomposites for bone tissue regeneration in orthopedics. Int J Mol Sci. 2022;23(17):9721. https://doi.org/10.3390/ijms23179721
Spilmont M, Léotoing L, Davicco MJ, et al. Pomegranate peel extract prevents bone loss in a preclinical model of osteoporosis and stimulates osteoblastic differentiation in vitro. Nutrients. 2015;7(11):9265-9284. https://doi.org/10.3390/nu7115465
Munir MU, Salman S, Ihsan A, Elsaman T. Synthesis, characterization, functionalization and bio-applications of hydroxyapatite nanomaterials: an overview. Int J Nanomedicine. 2022;17:1903-1925. https://doi.org/10.2147/IJN.S360670
Díaz-Puertas R, Álvarez-Martínez FJ, Falco A, Barrajón-Catalán E, Mallavia R. Phytochemical-based nanomaterials against antibiotic-resistant bacteria: an updated review. Polymers (Basel). 2023;15(6):1392. https://doi.org/10.3390/polym15061392
Siafaka PI, Miliotou AN, Okur ME, Karaotmarlı Güven G, Karantas ID, Üstündağ Okur N. Nanoformulations loaded with phytochemicals for combating wound infections and promoting wound healing: current applications and innovations. Appl Sci (Basel). 2025;15(10):5413. https://doi.org/10.3390/app15105413
Díaz L, Zambrano E, Flores ME, et al. Ethical considerations in animal research: the principle of 3Rs. Rev Invest Clin. 2021;73(4):20000380. https://doi.org/10.24875/ric.20000380
Holubnycha V, Pshenychnyi R, Bolshanina S, Derevianko T, Deineka V, Skwarek Y, Husak Y, Kowalska K, Yanovska A. ZnO NPs-Hydroxyapatite Composite Loaded with Phytoextract for Bone Defect Healing. 2025 IEEE 15th International Conference Nanomaterials: Applications & Properties (NAP) 7-12 Sept. Bratislava, Slovakia. 2025;NRA07:1-6. https://doi.org/10.1109/NAP68437.2025.11216223.
Owji N, Kohli N, Frost OG, Sawadkar P, Snow M, Knowles JC, García-Gareta E. Ex ovo chorioallantoic membrane assay as a model of bone formation by biomaterials. ACS Macro Lett. 2024;13(10):1362-1368. https://doi.org/10.1021/acsmacrolett.4c00343
Wang Y, Wang X, Zhou D, Xia X, Zhou H, Wang Y, Ke H. Synthesis and biological evaluation of silver–copper nanoparticles with antibacterial activity. ACS Omega. 2023;8(23):20323-20331. https://doi.org/10.1021/acsomega.2c08180
Bruna T, Maldonado-Bravo F, Jara P, Caro N. Silver nanoparticles and their antibacterial applications. Int J Mol Sci. 2021;22(13):7202. https://doi.org/10.3390/ijms22137202
Baharara J, Namvar F, Mousavi Nejad M, Ramezani Farzin T, Mohamad R. Anti-angiogenesis effect of biogenic silver nanoparticles synthesized using Salvia officinalis on chick chorioallantoic membrane (CAM). Molecules. 2014;19(9):13498-13508. https://doi.org/10.3390/molecules190913498
Tornese R, Montefusco A, Placì R, et al. Antiangiogenic potential of pomegranate extracts. Plants (Basel). 2024;13(23):3350. https://doi.org/10.3390/plants13233350

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