Photodynamic therapy of vein grafts: Suppression of intimal hyperplasia of the vein graft but not the anastomosis Glenn M. LaMuraglia, MD, Michael L.

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Presentation transcript:

Photodynamic therapy of vein grafts: Suppression of intimal hyperplasia of the vein graft but not the anastomosis Glenn M. LaMuraglia, MD, Michael L. Klyachkin, MD, Farzin Adili, MD, William M. Abbott, MD Journal of Vascular Surgery Volume 21, Issue 6, Pages 882-890 (June 1995) DOI: 10.1016/S0741-5214(95)70215-6 Copyright © 1995 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 1 Schematic of model used. Distal external jugular vein, as it proceeds deep into neck, is harvested, reversed, and sutured to cervical common carotid artery as bypass graft. Journal of Vascular Surgery 1995 21, 882-890DOI: (10.1016/S0741-5214(95)70215-6) Copyright © 1995 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 2 Light micrograph of representative section from 4-week control vein graft. Note thin media and IH with multiple layers of smooth muscle cells. Arrow denotes internal elastic lamina. Hematoxylin and eosin stain. Bar equals 25 μm. Journal of Vascular Surgery 1995 21, 882-890DOI: (10.1016/S0741-5214(95)70215-6) Copyright © 1995 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 3 Light micrograph of representative section from 4-week PDT vein graft. No IH is present. Note collapsed media and compact adventitia. Arrow denotes internal elastic lamina. Hematoxylin and eosin stain. Bar equals 25 μm. Journal of Vascular Surgery 1995 21, 882-890DOI: (10.1016/S0741-5214(95)70215-6) Copyright © 1995 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 4 Light micrograph of 4-week anastomotic hyperplasia of PDT vein graft. Smooth muscle cells appear to be emanating (arrow) from artery wall edge with black elastic laminae into IH. Verhoeff's elastin stain. Bar equals 50 μm. Journal of Vascular Surgery 1995 21, 882-890DOI: (10.1016/S0741-5214(95)70215-6) Copyright © 1995 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 5 Distribution of IH at proximal anastomoses. IH is measured at 2 weeks (A) and 4 weeks (B) between PDT (closed circles) and control (open squares) vein grafts at distances in mm. Journal of Vascular Surgery 1995 21, 882-890DOI: (10.1016/S0741-5214(95)70215-6) Copyright © 1995 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 6 Distribution of intimal hyperplasia at distal anastomoses. IH is measured at 2 weeks (A) and 4 weeks (B) between PDT (closed circles) and control (open squares) vein grafts at distances in mm. Journal of Vascular Surgery 1995 21, 882-890DOI: (10.1016/S0741-5214(95)70215-6) Copyright © 1995 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions