Evaluating the impact of PBM wavelengths on CTGF-driven tenogenic differentiation of ADMSCs through multi-level analyses.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Evaluating the Impact of PBM Wavelengths on CTGF-Driven Tenogenic Differentiation of ADMSCs Through Multi-Level Analyses" studied the effects of photobiomodulation (PBM) on the tenogenic differentiation of adipose-derived mesenchymal stem cells (ADMSCs) stimulated with connective tissue growth factor (CTGF) using a range of wavelengths (525 nm, 825 nm, and their combination) and fluences (5 and 10 J/cm²). Gene expression (qPCR for COL1A1, COL3A1, TNMD, TNC, BGN, and SMAD3), morphological alterations (Giemsa staining), metabolic activity (ATP test), and cytotoxicity (LDH release) were all evaluated using a multi-level experimental design. On Day 5, ATP production was significantly enhanced without cytotoxicity by using dual-wavelength PBM at 5 J/cm². On the other hand, metabolic activity was decreased but membrane integrity was preserved at a higher fluence of 10 J/cm². By Day 10, the spindle-shaped morphology and cellular alignment were more apparent in Giemsa-stained cells that had been exposed to dual-wavelength PBM. A synergistic impact in promoting tendon-specific lineage commitment was shown by gene expression analysis, which showed substantial elevation of critical tenogenic markers under dual-wavelength PBM at 5 J/cm². Taken together, these results show that PBM works best when the wavelength and dosage are optimized, and they provide credence to the idea that PBM might

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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