ISSN:
1432-2307
Keywords:
Intrahepatic bile duct carcinoma
;
N-Nitrosobis(2-oxopropyl) amine
;
Hamster
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract A subcutaneously transplantable cancer line from the intrahepatic bile duct (IHBD) induced byN- nitrosobis(2-oxopropyl) amine was established in Syrian golden hamsters. The doubling time of this tumour was 2.6 days when 2x105 tumour cells were inoculated subcutaneously (take-up rate was 100%). Growth of the tumour was significantly faster in male hamsters but neither oestrogen nor androgen receptors were detected in the tumour. The primary and all allograft tumours were tubular adenocarcinomas with fibrosis and a scirrhous pattern resembling human IHBD carcinoma of the peripheral type. Transmission electron microscopic findings showed irregular glands covered with numerous microvilli. Blood-group-related antigens including A, B and H were positive. P-Glycoprotein, which is an indicator of multidrug resistance, was also positive. Carcinoembryonic antigen and CA19-9 as general tumour markers of the biliary tract were negative. The deoxyribonucleic acid (DNA) pattern of this transplantable carcinoma was diploid. This newly established animal model of a transplantable IHBD carcinoma can be used to examine the mechanisms of synthesis and secretion of tumour-associated antigens and to study potential therapeutic agents.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01621807
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