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Experimental Laser Phototherapy of the Morris 7777 Hepatoma in the Rat by Stephen Holt; John Tulip; Douglas Hamilton; Judith Cummins; Anthony Fields; Catherine Dick is a Medicine article available to read on EtoBox.

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The tumoricidal effect of the activation of hematoporphyrin derivative (HpD), by an argon-ion-dye-laser (wavelength 630 nm), was investigated in the Buffalo rat bearing subcutaneous implants of the Morris 7777 hepatoma. Tumor growth was monitored by measuring the tumor volume with constant force calipers. In control animals and those that were pretreated with HpD alone (10 or 20 mg per kg by i.p. injection) or laser light alone (2,000 J at 100 mW), a predictable exponential growth pattern of the cancer was observed. Animals were pretreated with HpD (10 mg per kg by i.p. injection) 48 hr prior to the fiberoptic, intratumor delivery of laser radiation (2,000 J at 100 mW), when the tumor had reached a volume greater than 1.5 cm3. Forty-eight hours after combined laser and HpD treatment, the hepatoma underwent coagulation necrosis, and the tumor volume rapidly increased from a mean value of 1.8 +/- 0.7 cm3 S.D. to a value of 5.8 +/- 1.5 cm3 S.D., compared with a mean of 3.7 +/- 0.7 cm3 S.D. in animals who had not received laser phototherapy. Rats treated with HpD and laser light survived longer (mean survival time 48 +/- 12 days S.D.) than did the other animals treated with the laser a

Who reads Experimental Laser Phototherapy of the Morris 7777 Hepatoma in the Rat?

Author

Stephen Holt; John Tulip; Douglas Hamilton; Judith Cummins; Anthony Fields; Catherine Dick

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Elsevier BV; Wiley; Research Square (ISSN 0270-9139)

Published

1985

Language

EN

Field

Medicine (Health Sciences)