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From brushite to hydroxylapatite: A study on phosphate mineral transformation and the fate of oxytetracycline.
J Contam Hydrol
January 2025
Hebei Key Laboratory of Crop Stress Biology, Hebei Normal University of Science and Technology, Qinhuangdao 066000, China.
Livestock manure, a common fertilizer in Chinese agriculture, can lead to environmental contamination and potential health risks due to elevated antibiotic and phosphorus levels. Importantly, the high phosphorus levels initiates transformations of phosphate minerals in soils, especially calcareous soils. These variations in phosphate mineralogy can significantly impact the migration and fate of antibiotics within the soil.
View Article and Find Full Text PDFComparison Between Nano-Hydroxyapatite/Beta-Tricalcium Phosphate Composite and Autogenous Bone Graft in Bone Regeneration Applications: Biochemical Mechanisms and Morphological Analysis.
Int J Mol Sci
December 2024
Department of Biology, School of Medicine, State University of Rio de Janeiro, Professor Manuel de Abreu, 444, Avenue, Rio de Janeiro 20550-170, Brazil.
It was assumed that only autogenous bone had appropriate osteoconductive and osteoindutive properties for bone regeneration, but this assumption has been challenged. Many studies have shown that synthetic biomaterials must be considered as the best choice for guided bone regeneration. The objective of this work is to compare the performances of nanohydroxyapatite/β-tricalcium phosphate (n-HA/β-TCP) composite and autogenous bone grafting in bone regeneration applications.
View Article and Find Full Text PDFBackground: Injectable biostimulator treatments stimulate endogenous collagen in aging skin, but whether they act through similar pathways is unknown. This study evaluates two biostimulatory agents' effects on genes, expressed proteins, and respective pathways as potential aging biomarkers and treatment outcomes.
Methods: This 13-week, randomized, single-center, comparative study compared volume change and gene expression stimulated by poly-L-lactic acid (PLLA-SCATM) and calcium hydroxylapatite (CaHA-R) via punch biopsy in the nasolabial fold (NLF).
Comparative study of pulpal response following direct pulp capping using synthesized fluorapatite and hydroxyapatite nanoparticles.
BMC Oral Health
January 2025
Basic Dental Sciences Department, Faculty of Dentistry, Zarqa University, PO Box 2000, Zarqa, 13110, Jordan.
Objective: This study aimed to investigate and compare the histological response of rabbit dental pulp after direct pulp capping with 3 different materials: mineral trioxide aggregate (MTA), nanoparticles of fluorapatite (Nano-FA), and nanoparticles of hydroxyapatite (Nano-HA) after 4 and 6-week time intervals.
Material And Methods: A total of 72 upper and lower incisor teeth from 18 rabbits were randomly categorized into 3 groups)24 incisors from six rabbits each. MTA Group: teeth were capped with MTA.
Effect of cobalt ions doping on morphology and electrochemical properties of hydroxyapatite coatings for biomedical applications.
Sci Rep
January 2025
Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, 29 Bahman Blvd., Tabriz, Iran.
Hydroxyapatite (HA) is an engineered biomaterial that closely resembles the hard tissue composition of humans. Biological HA is commonly non-stoichiometric and features lower crystallinity and higher solubility than stoichiometric HA. The chemical compositions of these biomaterials include calcium (Ca), phosphorus (P), and trace amounts of various ions such as magnesium (Mg), zinc (Zn), and strontium (Sr).
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