Responses of cultured smooth muscle cells from human nonatherosclerotic arteries and primary stenosing lesions after photoradiation: Implications for photodynamic therapy of vascular stenoses

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Journal of the American College of Cardiology; (USA)

DOI:https://doi.org/10.1016/0735-1097(90)92824-L· OSTI ID:7062339

Dartsch, P C; Ischinger, T; Betz, E ^[1]

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1. Univ. of Tuebingen (Germany, F.R.)

Cultured smooth muscle cells from human nonatherosclerotic arteries and from primary stenosing lesions were labeled with dihematoporphyrinester and ether, a photosensitizing probe used mainly for the detection and photodynamic therapy of tumors. After labeling for 24 h, cells were irradiated with ultraviolet light (wavelength 365 nm, energy densities ranging from 30 to 1,200 mJ/cm{sup 2}). Twenty-four hours after photoradiation, 80% of smooth muscle cells from nonatherosclerotic arteries and only 20% of smooth muscle cells from atherosclerotic plaques were viable and still adherent. Moreover, dynamic cell and cytoskeletal alterations in response to irradiation are described. The differential sensitivity of smooth muscle cells from nonatherosclerotic arteries and from atherosclerotic plaques provides evidence that a photodynamic treatment might be a valuable therapeutic approach to vascular stenosis.

• OSTI ID: 7062339
• Journal Information: Journal of the American College of Cardiology; (USA), Vol. 15:7; ISSN 0735-1097
• Country of Publication: United States
• Language: English

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