101 research outputs found
Pulmonary and Other Non-Neurological Vascular Malformations: Diagnosis and Endovascular Treatment
ダィバージング オヨビ ピンホールホウ ニヨル 131I-Adosterol NCL-6-131I フクジン シンチグラフィ 3 アルドステロンショウ ニオケル ヒョウジュン オヨビ デキサメサゾン ヨクセイ シンチグラフィ ノ ヒカク ケンキュウ
Experimental renal and hepatic artery embolization with a new embolic agent, atelocollagen, in a porcine model
PURPOSEWe aimed to investigate the potentiality of atelocollagen, a new embolic agent which is collagen type I in a porcine experimental model. MATERIALS AND METHODSThree pigs underwent transcatheter embolization of lower interlobular arteries of the renal artery (n=6) and one branch of the hepatic artery (n=3) with collagen type I. Angiography was performed prearterial, during, and postarterial embolization. After the procedure, samples from the embolized organs were evaluated by histological analysis. RESULTSSix lower interlobular renal arteries and three hepatic arteries were successfully embolized by administration of 0.8±0.3 mL and 2.9±1.2 mL, respectively, of the collagen type I. Histological findings of the embolized kidney specimens showed that the collagenous materials filled the arterial lumen, whose size ranged from 2.02 to 839.82 μm and reached the level of afferent arteries of glomerular tufts. Although the area of occluded arteries of the liver was smaller than the kidney, histological findings of the liver specimens showed that the collagenous materials filled small arterial lumens from 2.81 to 187.86 μm in diameter. CONCLUSIONAtelocollagen, a collagen type I, has the potential to be used to embolize the distal vessels of both renal and hepatic arteries
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