摘要:

The effect of previous ovariectomy on the development of cholesterol-induced atherogenesis in the rabbit was investigated. It was found that an ovariectomized group of animals had a significantly greater degree of hypercholesterolemia, but that the control group with intact ovaries developed slightly more aortic and coronary atheromatosis. The implications of these findings are discussed.

ISSN:0009-7330    

出版商:OVID    

年代:1955

数据来源: OVID

摘要:

Although Cohn's microfractionation method number 10 was specifically devised to meet the conditions of protein concentration and distribution in human plasma, it is shown in this contribution that it may be applied to studies of canine plasma. Essentially all of the lipids of plasma are recovered in Fractions IV + V + VI and I + III. Only negligible amounts appear in Fraction II. Electrophoretic studies proved that the lipoproteins of Fraction IV + V + VI have the mobility of alpha globulins and those in Fraction I + III have the mobility of beta globulins.

ISSN:0009-7330    

出版商:OVID    

年代:1955

数据来源: OVID

摘要:

The applicability of Cohn's method number 10 to the study of dog plasma has made possible this investigation of experimental canine atherosclerosis. Administration of thiouracil which causes hypercholesterolemia but no atherosclerosis in dogs produces no considerable alteration in the distribution of plasma lipoproteins. High cholesterol feeding and administration of thiouracil causes both atherosclerosis and significant alterations in the distribution of lipoproteins.

ISSN:0009-7330    

出版商:OVID    

年代:1955

数据来源: OVID

摘要:

Utilizing differential vectorcardiography and certain calculations, a method is presented by which the relative quantities of electrical energy expended in depolarization and repolarization of the myocardium in man can be determined.

ISSN:0009-7330    

出版商:OVID    

年代:1955

数据来源: OVID

摘要:

During normal spontaneous inspiration pulmonary blood flow increases in spite of an increase in resistance to flow in the pulmonary bed. The enhancement of pulmonary flow is caused by an augmentation of venous return due to thoracic aspiration. The right heart acts as a moderator for the pulmonary flow by temporarily storing part of the large influx of venous blood during inspiration and ejecting the stored part during expiration and the expiratory pause.

ISSN:0009-7330    

出版商:OVID    

年代:1955

数据来源: OVID

摘要:

The conditions for quantitative extraction of actomyosin from dog heart ventricular muscle were studied. By use of appropriate techniques and conditions, yields of actomyosin comparable to those found by others for a variety of muscles were obtained. The method used could be standardized to give reproducible values with both fresh and frozen muscle. Actomyosin so obtained retained its characteristic properties as evidenced by its viscosity response to ATP and its enzymatic activity.

ISSN:0009-7330    

出版商:OVID    

年代:1955

数据来源: OVID

摘要:

In comparing protein composition of cardiac muscle of normal dogs and dogs with experimental valvular lesions and chronic heart failure, it was found that the concentration of actomyosin was lower in the experimental than in normal dogs. Furthermore, cardiac actomyosin in the experimental animals showed decreased viscosity, decreased viscosity response to ATP, and sedimentation patterns that differed from the normal.

ISSN:0009-7330    

出版商:OVID    

年代:1955

数据来源: OVID

ISSN:0009-7330    

出版商:OVID    

年代:1955

数据来源: OVID

摘要:

Error was inadvertently made in the articleActivation of the Interventricular Septumby Allen M. Scher, Allan C. Young, Arthur L. Malmgren and Robert V. Erickson, Circulation Research 3: 56 (January), 1955; top line of second column, p. 56 should read 109ohms (one thousand million), not 109 ohms as printed.

ISSN:0009-7330    

出版商:OVID    

年代:1955

数据来源: OVID