Salvatore D’Arpa

Osteoarthritis is a chronic degenerative joint disease characterized by inflammation and cartilage degradation, for which current treatments are mainly symptomatic and unable to halt disease progression. Adipose-derived mesenchymal stem cells (ASCs) represent a promising therapeutic option due to their regenerative and immunomodulatory properties, which may be further enhanced through specific priming strategies. In this study, primary human ASCs were exposed to interleukin-1 beta (IL1β), interferon-gamma (IFNγ), or hypoxic priming, and subsequently analyzed using a multi-omics approach integrating RNA sequencing, proteomics of secretome, and exosomal miRNA profiling. Differential gene expression, protein abundance, and miRNA signatures were assessed together with functional enrichment and network analyses. IL1β priming induced marked transcriptional reprogramming of ASCs, while hypoxia and IFNγ priming produced limited changes. IL1β also profoundly reshaped the ASC secretome and exosomal miRNA cargo, revealing coordinated regulation of pathways involved in immune modulation and cartilage remodeling. In contrast, the other priming conditions showed minimal and less integrated molecular effects. Overall, IL1β priming consistently generated a multi-layered molecular signature linking immunoregulatory and regenerative pathways. These findings suggest that IL1β priming enhances the functional properties of ASCs and provides mechanistic insight supporting their potential use in osteoarthritis therapy.

Background/Objectives: Investigating how placement of a contralateral breast implant in the context of unilateral implant-based breast reconstruction influences aesthetic and patient-reported outcomes. Methods: A retrospective analysis was performed on a single-center prospectively maintained database (January 2021–March 2025) including patients who underwent unilateral implant-based breast reconstruction in association with a contralateral implant placement or not. Exclusion criteria were bilateral implant-based reconstruction or autologous reconstruction, follow-up of less than 6 months and missing data. Demographics and complications were analyzed. Aesthetic outcomes were evaluated by independent blinded surgeons using the Kroll Scale, patient satisfaction was investigated with the BREAST-Q Reconstruction Module v2.0. Statistical analysis used the Student’s t-test, Multivariate regression analysis and Mann–Whitney U test with significance set at p < 0.05. Results: The study group included 21 patients (40.4%) who received a contralateral implant, while the control group included 31 patients (59.6%) who did not receive a contralateral implant. Patients who received contralateral implants showed a significant improvement in cosmetic outcomes evaluated with the Kroll Scale and a raw increment, without statistical significance, in BREAST-Q scores in all subsections investigated (Psychosocial well-being, Sexual well-being and Satisfaction with breasts). Conclusions: Placing a contralateral breast implant in the context of unilateral implant-based breast reconstruction significantly improves aesthetic outcomes and correlates with higher patient satisfaction scores for the reconstructed breast, compared to placing no contralateral implant, without increasing the overall complication rate.