title: Tissue and organ expression of catalase in acatalasemic beagle dogs.
abstract: Acatalasemic Beagle dogs which were maintained in our laboratories showed no sign of catalase activity at all in the erythrocytes, and glutathione peroxidase and superoxide dismutase were at normal levels. Immunoblotting analysis demonstrated that no catalase protein is detectable in their erythrocytes. On the other hand, catalase activity was detected in other tissues and organs, albeit at varying, lower levels than in normal dogs. Quantitative immunoblotting analysis consistently demonstrated that the catalase protein is expressed in the liver and kidneys of acatalasemic dogs in proportion to the activity in these organs. The catalase mRNA expressions in the blood, liver and kidneys in acatalasemic dogs were almost the same as those in normal dogs. These results suggested that catalytically normal catalase protein is translated from mRNA in the tissues and organs including erythrocytes, but in erythrocytes this enzyme protein is disposed of by an unknown mechanism.
authors.affiliation: Analytical and Metabolic Research Laboratories, Sankyo Co., Ltd., Tokyo, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Nakamura
authors.forename: M
authors.initials: M
authors.lastname: Watanabe
authors.forename: T
authors.initials: T
authors.lastname: Ikeda
authors.forename: Y
authors.initials: Y
authors.lastname: Sasaki
authors.forename: N
authors.initials: N
authors.lastname: Matsunuma
mesh_terms: D020642:Acatalasia / Q000097:blood / Q000201:enzymology / Q000662:veterinary*; D000818:Animals; D015152:Blotting, Northern; D002374:Catalase / Q000235:genetics / Q000378:metabolism*; D004283:Dog Diseases / Q000097:blood / Q000201:enzymology*; D004285:Dogs; D004912:Erythrocytes / Q000201:enzymology; D005979:Glutathione Peroxidase / Q000378:metabolism; D015151:Immunoblotting; D007668:Kidney / Q000201:enzymology; D008099:Liver / Q000201:enzymology; D008297:Male; D012333:RNA, Messenger / Q000378:metabolism; D013482:Superoxide Dismutase / Q000378:metabolism; D014018:Tissue Distribution
chemical_list: D012333:RNA, Messenger; D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase