Abstract |
The aim of this study was to evaluate the efficacy of suspensions of zinc-containing tricalcium phosphate (TCP) in the healing of thermal burns in rats. β-ZnTCP containing 10 mol % zinc, α-ZnTCP containing 0.9 mol % zinc, and ZnSO4 ·(H2O)7 (ZnSO4) were used. The injections were prepared to suspend ZnSO4 , α-ZnTCP, and β-ZnTCP powders in 2 mL of 1% sodium alginate saline solution containing 2 mg of Zn. In vitro Zn release rates were measured in simulated body fluid. The release of Zn from ZnSO4 was very fast, but that from α-ZnTCP and β-ZnTCP was slowed by transformation to hydroxyapatite. The suspensions were injected into group C (control), D1 (ZnSO4), D2 (α-ZnTCP), and D3 (β-ZnTCP) rats after thermal burns treatment for 3 h. The area under the curve for the plasma Zn for group D1 was the highest, and the order was groups D1 > D2 ≥ D3 ≥ C. The wounded area (Aw) of group D1 had almost the same profile as that of group C, and the Aw at 18 days was about 20%. In contrast, the Aw of group D2 and D3 decreased, and on day 15 was 8% and 37%, respectively. The results indicated that the healing process was shorter in the rats given α-ZnTCP and β-ZnTCP than those given ZnSO4 or the control.
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Authors | Makoto Otsuka, Masayuki Shikamura, Kuniko Otsuka, Yu Sogo, Atsuo Ito |
Journal | Journal of biomedical materials research. Part A
(J Biomed Mater Res A)
Vol. 101
Issue 5
Pg. 1518-24
(May 2013)
ISSN: 1552-4965 [Electronic] United States |
PMID | 23281276
(Publication Type: Journal Article)
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Copyright | Copyright © 2012 Wiley Periodicals, Inc. |
Chemical References |
- Calcium Phosphates
- Alkaline Phosphatase
- Zinc
- tricalcium phosphate
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Topics |
- Alkaline Phosphatase
(blood)
- Animals
- Burns
(blood, drug therapy, pathology)
- Calcium Phosphates
(chemistry)
- Injections
- Male
- Rats
- Rats, Wistar
- Wound Healing
(drug effects)
- Zinc
(administration & dosage, blood, chemistry, therapeutic use)
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