Abstract：
:Severe weight loss is associated with many malignant diseases of humans and animals. Avian reticuloendotheliosis viruses (RE viruses) induce runting in experimentally infected chickens. Chickens infected with a replication-competent RE virus, reticuloendotheliosis-associated virus, weighed 30-50% less than control birds at the time of death. Chickens infected with reticuloendotheliosis virus, a replication-defective acute leukemia virus, weighed 30% less than the controls. The runting induced by RE viruses does not occur because of reduced food intake. Activities of phosphoenolpyruvate carboxykinase, a key gluconeogenic enzyme in the liver, were reduced approximately 40 and 50%, respectively, by infection with reticuloendotheliosis-associated virus and reticuloendotheliosis virus. RE virus infection, however, did not affect the hepatic pyruvate carboxylase activity, indicating that inhibition of phosphoenolpyruvate carboxykinase is not due to a general inhibition of all liver enzymes. Birds given injections of UV-inactivated RE viruses or reticuloendotheliosis virus-transformed, non-virus-producing tumor cells also exhibited a reduction in phosphoenolpyruvate carboxykinase activity.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Garry RF,Shackleford GM,Berry LJ,Bose HR Jrsubject
Has Abstractpub_date
1985-10-01 00:00:00pages
5020-6issue
10eissn
0008-5472issn
1538-7445journal_volume
45pub_type
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