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Innella K, Levidy MF, Kadkoy Y, Lin A, Selles M, Sanchez A, Weiner A, Greendyk J, Moriarty B, Lauritsen K, Lopez J, Teitelbaum M, Fisher M, Mendiratta D, Ahn DB, Ippolitto J, Paglia DN, Cottrell J, O'Connor JP, Benevenia J, Lin SS. Local zinc treatment enhances fracture callus properties in diabetic rats. J Orthop Res 2022. [PMID: 36515300 DOI: 10.1002/jor.25499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 11/30/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022]
Abstract
The effects of locally applied zinc chloride (ZnCl2 ) on early and late-stage parameters of fracture healing were evaluated in a diabetic rat model. Type 1 Diabetes has been shown to negatively impact mechanical parameters of bone as well as biologic markers associated with bone healing. Zinc treatments have been shown to reverse those outcomes in tests of nondiabetic and diabetic animals. This study is the first to assess the efficacy of a noncarrier mediated ZnCl2 on bony healing in diabetic animals. This is a promising basic science approach which may lead to benefits for diabetic patients in the future. Treatment and healing were assessed through quantification of callus zinc, radiographic scoring, microcomputed tomography (µCT), histomorphometry, and mechanical testing. Local ZnCl2 treatment increased callus zinc levels at 1 and 3 days after fracture (p ≤ 0.025). Femur fractures treated with ZnCl2 showed increased mechanical properties after 4 and 6 weeks of healing. Histomorphometry of the ZnCl2 -treated fractures found increased callus cartilage area at Day 7 (p = 0.033) and increased callus bone area at Day 10 (p = 0.038). In contrast, callus cartilage area was decreased (p < 0.01) after 14 days in the ZnCl2 -treated rats. µCT analysis showed increased bone volume in the fracture callus of ZnCl2 -treated rats at 6 weeks (p = 0.0012) with an associated increase in the proportion of µCT voxel axial projections (Z-rays) spanning the fracture site. The results suggest that local ZnCl2 administration improves callus chondrogenesis leading to greater callus bone formation and improved fracture healing in diabetic rats.
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Affiliation(s)
- Kevin Innella
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Michael F Levidy
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Yazan Kadkoy
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Anthony Lin
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Marcus Selles
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Alexandra Sanchez
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Adam Weiner
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Joshua Greendyk
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Brian Moriarty
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Katherine Lauritsen
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Jonathan Lopez
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Marc Teitelbaum
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Mark Fisher
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Dhruv Mendiratta
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - David B Ahn
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Joseph Ippolitto
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - David N Paglia
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Jessica Cottrell
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA.,Department of Biological Sciences, Seton Hall University, South Orange, New Jersey, USA
| | - J Patrick O'Connor
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Joseph Benevenia
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
| | - Sheldon S Lin
- Department of Orthopaedic Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, USA
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