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Margolis DJ, Hampton M, Hoffstad O, Mala DS, Mirza Z, Woltereck D, Shannon S, Troiano MA, Mitra N, Yang M, Bhopale VM, Thom SR. NOS1AP genetic variation is associated with impaired healing of diabetic foot ulcers and diminished response to healing of circulating stem/progenitor cells. Wound Repair Regen 2017; 25:733-736. [PMID: 28755516 DOI: 10.1111/wrr.12564] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 07/17/2017] [Indexed: 11/30/2022]
Abstract
It is unclear why many with diabetes develop foot ulcers (DFU) and why some do not heal. It could be associated with genetic variation. We have previously shown that NOS1AP variation is associated with lower extremity amputation in those with diabetes and that circulating stem progenitor cell concentration (SPC) is associated with impaired foot ulcer healing in those with diabetes. The goal of this study was to determine if NOS1AP variation is associated with impaired wound healing and with SPC mobilization in those with DFU. In longitudinal cohort study we demonstrate that NOS1AP variants rs16849113 and rs19649113 are associated with impaired wound healing and with SPC mobilization in those with DFU. We believe that further study of NOS1AP is merited and that it NOS1AP might be associated with a functional impairment.
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Affiliation(s)
- David J Margolis
- Department of Dermatology, Perelman School of Medicine University of Pennsylvania, Philadelphia, Pennsylvania
| | - Michelle Hampton
- Department of Dermatology, Perelman School of Medicine University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ole Hoffstad
- Department of Dermatology, Perelman School of Medicine University of Pennsylvania, Philadelphia, Pennsylvania
| | - D Scot Mala
- Podiatric Surgery and Medicine, Penn Presbyterian Medical Center, Philadelphia, Pennsylvania
| | - Ziad Mirza
- Department of Medicine, Greater Baltimore Medical Center, Baltimore, Maryland
| | - Diana Woltereck
- Department of Medicine, Greater Baltimore Medical Center, Baltimore, Maryland
| | - Steven Shannon
- Podiatric Surgery and Medicine, Penn Presbyterian Medical Center, Philadelphia, Pennsylvania
| | - Michael A Troiano
- Podiatric Surgery and Medicine, Penn Presbyterian Medical Center, Philadelphia, Pennsylvania
| | - Nandita Mitra
- Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ming Yang
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, Maryland
| | - Veena M Bhopale
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, Maryland
| | - Stephen R Thom
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, Maryland
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Thom SR, Hampton M, Troiano MA, Mirza Z, Malay DS, Shannon S, Jennato NB, Donohue CM, Hoffstad O, Woltereck D, Yang M, Yu K, Bhopale VM, Kovtun S, Margolis DJ. Measurements of CD34+/CD45-dim Stem Cells Predict Healing of Diabetic Neuropathic Wounds. Diabetes 2016; 65:486-97. [PMID: 26487786 PMCID: PMC4747459 DOI: 10.2337/db15-0517] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 10/14/2015] [Indexed: 12/12/2022]
Abstract
Management of neuropathic foot ulcers in patients with diabetes (DFUs) has changed little over the past decade, and there is currently no objective method to gauge probability of successful healing. We hypothesized that studies of stem/progenitor cells (SPCs) in the early weeks of standard wound management could predict who will heal within 16 weeks. Blood and debrided wound margins were collected for 8 weeks from 100 patients undergoing weekly evaluations and treatment. SPC number and intracellular content of hypoxia-inducible factors (HIFs) were evaluated by flow cytometry and immunohistochemistry. More SPCs entered the bloodstream in the first 2 weeks of care in patients who healed (n = 37) than in those who did not (n = 63). Logistic regression demonstrated that the number of blood-borne SPCs and the cellular content of HIFs at study entry and the first-week follow-up visit predicted healing. Strong correlations were found among week-to-week assessments of blood-borne SPC HIF factors. We conclude that assays of SPCs during the first weeks of care in patients with DFUs can provide insight into how well wounds will respond and may aid with decisions on the use of adjunctive measures.
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Affiliation(s)
- Stephen R Thom
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD
| | - Michelle Hampton
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Michael A Troiano
- Podiatric Surgery and Medicine, Penn Presbyterian Medical Center, Philadelphia, PA
| | - Ziad Mirza
- Department of Medicine, Greater Baltimore Medical Center, Baltimore, MD
| | - D Scot Malay
- Podiatric Surgery and Medicine, Penn Presbyterian Medical Center, Philadelphia, PA
| | - Steven Shannon
- Podiatric Surgery and Medicine, Penn Presbyterian Medical Center, Philadelphia, PA
| | - Nathan B Jennato
- Podiatric Surgery and Medicine, Penn Presbyterian Medical Center, Philadelphia, PA
| | | | - Ole Hoffstad
- Department of Biostatistics and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Diana Woltereck
- Department of Medicine, Greater Baltimore Medical Center, Baltimore, MD
| | - Ming Yang
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD
| | - Kevin Yu
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD
| | - Veena M Bhopale
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD
| | - Svitlana Kovtun
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD
| | - David J Margolis
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA Department of Biostatistics and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
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