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Heparin coated decellularized xenogeneic small diameter vascular conduit for vascular repair with early luminal reendothelialization

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Abstract

Small diameter vascular graft is a clinical need in cardiovascular disease (CAD) and peripheral atherosclerotic diseases (PAD). Autologous graft has limitations in availability and harvesting surgery. To make luminal surface modification with heparin coating in xenogeneic small diameter vascular graft. We constructed a conduit from decellularized human saphenous vein (HSV) matrices in small diameter vascular graft (< 0.8 mm diameter). Luminal surface modification was done with heparin coating for transplantation in the rat femoral artery. Biocompatibility of conduit was checked in Chorioallantoic Membrane (CAM) assay and in vivo. The blood flow rate in conduit grafts was measured, and immuno-histological analysis was performed. CAM assay and in vivo biocompatibility test showed cellular recruitment in the HSV scaffold. Heparin binding was achieved on the luminal surface. After three months of transplantation surgery neo-intimal layer was formed in the graft. The graft was patent for two weeks after surgery. There were no statistically differences between blood flow rate in graft (at proximal end 0.5 ± 0.01 m/s and at distal end 0.4 ± 0.01 m/s (n = 6)) and native artery (0.6 ± 0.1 m/second, (n = 3)). Biomarkers of endothelial cells, medial smooth muscle cells, and angiogenesis were observed in the transplanted graft. Our study demonstrates that xenogeneic decellularized vascular grafts with surface modification with heparin coating could be useful for the replacement of small diameter vessels.

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All data generated or analyzed during this study are included in this published article.

Abbreviations

CVD:

Cardiovascular disease

PAD:

Peripheral arterial disease

HSV:

Human saphenous vein

ECM:

Extracellular matrix

TEVG:

Tissue-engineered vascular graft

SDS:

Sodium dodecyl sulfate

DHSV:

Decellularized HSV

DHSVS:

Decellularized HSV scaffold

DHSVC:

Decellularized HSV conduit

hDHSVC:

Heparin coated Decellularized HSV conduit

H&E:

Hematoxylin and eosin

MT:

Masson’s trichrome

AB:

Alcian blue

TB:

Toluidine blue

CAM:

Chorioallantoic membrane

GAG:

Glycosaminoglycan

SEM:

Scanning electron microscope

CBC:

Complete blood count

PT:

Prothrombin time

APTT:

Activated partial thromboplastin time

TT:

Thrombin time

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Acknowledgements

The authors are grateful to the Department of Botany, Shivaji University, Kolhapur for extending the SEM facility. Dr. Meghnad G. Joshi acknowledges the research funding support from the Department of Science and Technology (DST), Govt. of India (SB/SO/HS/0198/2013), and D.Y. Patil Education Society Deemed University (DYPES/DU/R&D/3104).

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Authors

Contributions

MJ conceived the study and designed the experiments. KT, NB, TM performed the experiments. MJ reviewed, analyzed, and interpreted the data. MJ and KT wrote the manuscript. All authors contributed to the analysis of the data and discussed the manuscript.

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Correspondence to Meghanad G. Joshi.

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Conflict of interest

The authors report no conflict of interest.

Ethical approval

All experimental procedures in this study were approved by the Institutional Ethical Committee (IAEC) (Ref.-6/IAEC/2017), D Y Patil Education Society, Deemed University, Kolhapur, India and conducted in accordance with D Y Patil Education Society, Deemed University guidelines for the care and use of laboratory animals.

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Tardalkar, K.R., Marsale, T.B., Bhamare, N.C. et al. Heparin coated decellularized xenogeneic small diameter vascular conduit for vascular repair with early luminal reendothelialization. Cell Tissue Bank 24, 449–469 (2023). https://doi.org/10.1007/s10561-022-10046-0

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  • DOI: https://doi.org/10.1007/s10561-022-10046-0

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