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Brain & Heart                                                          Stem cells in cardiovascular disease



            reduced infarct size within 24  h and improved cardiac   and  reporting  standards  is  essential  to  improve  rigor,
            function over 28  days compared with that in untreated   reproducibility, and transparency in MSC research.
            controls.
                                                               5. Conclusion
              hiPSCs are used to generate cardiomyocytes (hiPSC-
            CMs) for investigating cardiac diseases. Nevertheless, these   Stem cell research has the potential to revolutionize cardiac
            cells often resemble immature, fetal-like cardiomyocytes,   care  by providing  innovative  treatment strategies  for
            limiting their use in disease modeling and drug testing.    heart disease. Continued advancements and collaborative
                                                         29
            Recent advancements, such as culturing hiPSC-CMs in 3D   efforts are essential for overcoming existing challenges and
            microtissue environments or cardiac maturation media for   unlocking the complete potential of stem cell therapies.
            15 – 18 days, have resulted in cells that are approximately
            50% closer to adult heart cells in gene expression.  Matured   Acknowledgments
                                                  29
            hiPSC-CMs exhibit improved structure, mechanics, and   None.
            electrophysiology, including better contractile strength and
            calcium cycling. For diseases linked to SCN5A mutations,   Funding
            such as Brugada syndrome, matured hiPSC-CMs provide   None.
            better disease modeling. Ongoing research aims to further
            improve maturation using electrical stimulation and 3D   Conflict of interest
            cultures. 30
                                                               The authors declare that they have no competing interests.
              The combination of stem cell therapy with tissue
            engineering demonstrates significant promise for heart   Author contributions
            regeneration, disease modeling, drug testing, and valvular   Conceptualization: Aliki Iliadou, Panteleimon Pantelidis
            disease treatment. Nevertheless, unlike chemical drugs,
            cellular therapies are complex, and variability in cell   Visualization:  Aliki Iliadou, Panteleimon Pantelidis,
            culture conditions poses difficulties. Selecting the precise   Georgios Paparoidamis
            biocompatible material, having porosity and elasticity that   Writing–original draft: All authors
            match cardiac mechanics and support neovascularization,   Writing–review & editing: All authors
            is crucial. These materials must ensure effective cell   Ethics approval and consent to participate
            adhesion and controlled degradation as well as avoid toxic
            byproducts. As there is no single ideal material for cardiac   Not applicable.
            regeneration, researchers select biocompatible materials
            based on desired properties for optimal outcomes.  Consent for publication
              The implementation of stem cell therapies on a large   Not applicable.
            scale requires developing standardized clinical protocols,   Availability of data
            quality control measures, and strong regulatory oversight
            to ensure patient safety and ethical compliance, as   Not applicable.
            outlined by the ISSCR guidelines.  Despite their potential,
                                      31
            PSCs  face significant ethical  and  regulatory challenges.   References
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            Volume 2 Issue 4 (2024)                         8                                doi: 10.36922/bh.4521
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