Background: The effects of vitamin D deficiency on spinal fusion are not well studied, nor are approaches to overcoming deficiency-related detrimental effects. The purpose of this study was to (1) evaluate the effects of vitamin D deficiency on spine fusion in a rat model, and (2) determine whether recombinant human bone morphogenetic protein-2 (rhBMP-2) can improve outcomes in deficient rats.
Methods: Sprague-Dawley rats were assigned to a vitamin D group: vitamin D sufficient (14), vitamin D deficient (16), vitamin D postoperative rescue (15). Posterolateral fusion was performed at L3-4 and L5-6, with one level receiving rhBMP-2 and the other allograft. Following 6 weeks, the spines were harvested for micro-computed tomography (micro-CT) and histological analyses. Fusion was assessed via manual palpation and micro-CT assessment. Micro-CT images were analyzed for bone microarchitecture in intact L5 vertebral bodies and within fused bone masses treated with rhBMP-2.
Results: There were no significant effects of vitamin D status on fusion assessments. However, the microarchitecture of native bone in the intact L5 vertebral bodies of vitamin D-sufficient rats showed significantly greater trabecular thickness ( < .001) and bone volume fraction ( < .001), with decreased trabecular spacing ( < .001), than that of vitamin D-deficient rats. Fusion masses of rhBMP-2 levels also showed significant effects of vitamin D supplementation on both bone volume fraction and trabecular thickness. Histological analysis confirmed that robust bone formation was observed in rhBMP-2-treated fusions, but not in fusion levels treated with allograft.
Conclusions: Overall, vitamin D deficiency decreased trabecular bone microarchitecture, and treatment with rhBMP-2 improved outcomes across all vitamin D groups.
Clinical Relevance: Given the prevalence of vitamin D deficiency in spine surgery patients, vitamin D supplementation may be a cost-effective method for reducing the risk of pseudoarthrosis.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7671454 | PMC |
| http://dx.doi.org/10.14444/7101 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Vitamin D as an add-on therapy to phosphodiesterase-5 inhibitor in experimental pulmonary arterial hypertension.
Am J Physiol Lung Cell Mol Physiol
January 2025
Department of Pharmacology and Toxicology. School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.
Severe vitamin D (vitD) deficiency is a very common condition in patients with pulmonary arterial hypertension (PAH) and it is predictor of poor prognosis. There is emerging evidence suggesting a connection between the insufficient response to phosphodiesterase-5 inhibitors (PDE5i) and vitD deficiency in patients with PAH. In the present translational study, vitD deficiency was induced in Wistar rats by exposure to vitD free diet for 5 weeks and followed by Su5416 administration and hypoxia (10%) for 3 weeks, a standard experimental model of PAH.
View Article and Find Full Text PDFBackground: Identifying individuals' levels of tau PET pathology could prove to be beneficial in clinical settings, given that emerging therapies aimed reducing Aβ seem to be most effective in these individuals. Here, we present the cases of four patients who visited the memory clinic at the University of Pittsburgh Medical Center between June and December 2023 and underwent both Aβ and tau-PET scans.
Method: These individuals had standard clinical and cognitive outcomes, typical blood tests order in patients with memory impairment, MRI, and, as part of the HEAD study, PET PIB Aβ and two tau PET tracers (MK6240 and Flortaucipir).
Background: Dementia is a growing global public health challenge. Previous meta-analyses have found that systemic medications may modulate dementia risk. We aimed to provide an overview of this evidence.
View Article and Find Full Text PDFBackground: Lifestyle modifications incorporating a healthy diet, physical activity, brain training and health monitoring have proven effective in preventing dementia and related cognitive decline (REF). The Australian-Multidomain Lifestyle Intervention to reduce dementia risk (AU-ARROW) is an ongoing 2-yearintervention, which is the Australian contribution to the World-Wide FINGERS network. Here we report on preliminary findings of baseline dietary energy and nutrient intakes of AU-ARROW participants.
View Article and Find Full Text PDFBackground: Observational studies have shown a protective association between antioxidant nutrients and lower risk of Alzheimer's disease. Results from dietary intervention trials remain inconclusive. The effect of APOE-e4, the strongest risk factor for AD, on responsiveness to dietary interventions remains largely uninvestigated.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!