歴代両親実験的糖尿病ウサギより生まれた子孫ウサギ (F1, F2, F5および糖尿病自然発症ウサギ) の濾紙電気泳動法による血清蛋白, 複合蛋白ならびに血中コレステロールに関する研究:第1編正常ウサギの血清蛋白, 複合蛋白, 血中総コレステロールおよび血糖値ならびにその測定方法に関する二, 三の検討

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Serum protein, lipoprotein and glycoprotein were analysed by paperelectrophoresis in 12 normal adult rabbits (8 female and 4 male) weighing 2 to 3kg. Total cholesterol levels in blood were also measured by a modification of Bloor's method using the photoelectric colorimeter ; blood sugar levels by Somogyi's micromethod and total serum protein values by Pulfrich's refractometer. The results were as follows. 1) Average values of serum protein fractions were : albumin 53.5±2.6%, α1-globulin 9.4±1.3%, α2-globulin 6.1 ±0.4%, β-globulin 13.2±1.4%, γ-globulin 17.8±1.8%. The relative ratios of migration were : albumin 100, α1-globulin 73.5±1.2, α2-globulin 56.0±1.4, β-globulin 41.3±1.4, γ-globulin O. Lipoprotein fractions were : α-lipoprotein 34.5 ± 3.7%, β-lipoprotein 65.5 ± 3.7%, and the lipoprotein index was 1.99±0.84. Glycoprotein fractions were : albumin bound glycoprotein 20.6±3.9%, α1-globulin bound glycoprotein 17.2 ± 4.9%, α2-globulin bound glycoprotein 15.3 ± 2.0%, β-globulin bound glycoprotein 24.4±5.9%, γ-globulin bound glycoprotein 22.5±3.5%. Total blood cholesterol levels were 87 ±8.7 mg/dl, blood sugar levels 101±5.3mg/dl and tolal protein values 6.53±0.53g/dl. 2) The reproducibility of protein, lipoprotein and glycoprotein fractions from the same samples was good. 3) In the measurement of total cholesterol, it seems to be important to be careful of the temperature and time after the Liebermann-Burchard reaction is carried out. Part II. Serum Protein, Lipoprotein, Glycoprotein, Total Blood Cholesterol and Blood Sugar Levels in Offspring of Rabbits (F1, F2, F5, and Spontaneously Occurring Diabetic Rabbits) Descended from Rabbits with Induced Diabetes over Successive Generations, and in Rabbits Made Diabetic with Alloxan. Serum protein, lipoprotein, glycoprotein, total blood cholesterol levels, blood sugar levels and total serum protein values were studied in the offspring of rabbits (7 cases of F1, 6 cases of F2, 10 cases of F5 which is before the spontaneous occurrence of diabetes) descended from rabbits made diabetic with alloxan or 5- (p-Hydroxyphenylazo) -8-hydroxyquinoline over successive generations. The same studies were also made on 2 rabbits directly after the spontaneous occurrence of diabetes, on 2 young ones born to F5 rabbits which continued to have spontaneous diabetes for a long time, and on 10 rabbits made diabetic with alloxan. The results are as follows. 1) As compared with normal values, the serum protein fractions in F1, F2, F5 (before the spontaneous occurrence of diabetes) rabbits revealed an increase in α2-globulin fraction and a decrease in γ-globulin fraction. The lipoprotein index was increased. Glycoprotein fractions showed an increase in α2-globulin bound glycoprotein and a decrease in γ-globulin bound glycoprotein. These characteristics seemed more and more significant as the generations progressed, that is, from F1 to F2 to F5. Total blood cholesterol and blood sugar levels tended to increase slightly. Total serum protein levels remained normal. 2) There was no significant difference between the values in rabbits one month before and directly after the spontaneous occurrence of diabetes, except for an increase in blood sugar levels and a slight increase in the lipoprotein index, total cholesterol levels and α2-globulin bound glycoprotein. 3) In rabbits in which spontaeneous diabetes had continued for a long time,
一般社団法人日本内分泌学会の論文

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田口孟
京都大学医学部病理学教室

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