Membrane structure in ultrarapidly frozen, unpretreated, freeze-fractured myocardium.
Membrane structure in ultrarapidly frozen, unpretreated, freeze-fractured myocardium.
复制标题
超快速冷冻、未经预处理、冷冻断裂心肌中的膜结构。
DOI:
10.1161/01.res.61.1.141
复制
发表时间:
1987
影响因子:
20.1
通讯作者:
Mottino,G
中科院分区:
文献类型:
--
作者:
Frank,JS;Beydler,S;Mottino,G
Ultrarapid freezing has been applied to monitor the structure of the freeze-fractured myocardial sarcolemma. Our two goals were to demonstrate that large areas of membrane can be preserved free of visible ice crystal damage and, thus, be amenable to quantitative analysis and to compare the structure of directly frozen myocardial membranes with conventionally prepared tissue. The E face was most affected by lack of chemical pretreatment. First, our laboratory reported an increase in E face particle density from 379 +/- 30/micron 2 in conventional fixed tissue to 489 +/- 18/micron 2 in unpretreated tissue. Discrete arrays of 12-15 nm particles on the E face were a striking feature of the unfixed sarcolemma. However, P face intramembrane particle (IMP) density remained unchanged from previous estimates in fixed tissue. Specialized regions of the sarcolemma were enhanced in ultrarapidly frozen tissue. Particle domains of the adherens junctions were very prominent in forming a cap alongside the gap junctions. Both the P and E faces of the gap junctions were highly ordered into hexagonal arrays. Caveolae in the membrane were infrequent in both P and E faces.
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DOI:
--
发表时间:
1986
期刊:
Scanning electron microscopy
影响因子:
--
作者:
Nassar,R;Wallace,NR;Taylor,I;Sommer,JR
通讯作者:
Sommer,JR
DOI:
10.1152/ajpheart.1985.248.3.h297
发表时间:
1985
期刊:
The American journal of physiology
影响因子:
--
作者:
Kordylewski,L;Karrison,T;Page,E
通讯作者:
Page,E
影响因子:
3.4
作者:
Robert E. Lee;Ann C. Poulos;R. F. Mayer;J. Rash
通讯作者:
J. Rash
影响因子:
20.1
作者:
J. Frank;S. Beydler;M. Kreman;E. Rau
通讯作者:
E. Rau
DOI:
10.1016/s0022-5320(81)80135-9
发表时间:
1981
期刊:
Journal of ultrastructure research
影响因子:
--
作者:
Shibata,Y;Page,E
通讯作者:
Page,E