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Three-Dimensional Analysis of Tranverse Tubules in Normal and Failing Heart: A Combined Confocal and High Voltage Electron Microscope Study

Published online by Cambridge University Press:  02 July 2020

M. E. Martone ,
V. M. Edelman ,
A. Thor ,
S. J. Young ,
S. P. Lamont ,
J. Ross Jr.  and
M. H. Ellisman
M. E. Martone
Affiliation:
Dept. of Neurosciences and National Center for Microscopy and Imaging Research, Unversity of California, San Diego, San Diego, CA, 92093-0608
V. M. Edelman
Affiliation:
Dept. of Neurosciences and National Center for Microscopy and Imaging Research, Unversity of California, San Diego, San Diego, CA, 92093-0608
A. Thor
Affiliation:
Dept. of Neurosciences and National Center for Microscopy and Imaging Research, Unversity of California, San Diego, San Diego, CA, 92093-0608
S. J. Young
Affiliation:
Dept. of Psychiatry, Univ. of California, San Diego, San Diego, CA, 92093-0603
S. P. Lamont
Affiliation:
Dept. of Neurosciences and National Center for Microscopy and Imaging Research, Unversity of California, San Diego, San Diego, CA, 92093-0608
J. Ross Jr.
Affiliation:
Dept. of Medicine, Univ. of California, San Diego, San Diego, CA, 92093-0613
M. H. Ellisman
Affiliation:
Dept. of Neurosciences and National Center for Microscopy and Imaging Research, Unversity of California, San Diego, San Diego, CA, 92093-0608
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Extract

Early electron microscopic studies documented that significant changes in the membrane systems of cardiac cells occur in both ischemic and non-ischemic heart failure. These studies relied on analysis of two-dimensional sections and although quantitative changes were observed, the overall organization of the tranverse tubules (T-tubules) and the sarcoplasmic reticulum could not be assessed. In a 3-dimensional study using high voltage electron microscopy (EM) of the T-tubules in spontaneously hypertensive rats, Nakamura and Hama (1991) observed that concomitant with an increase in surface area, the T-tubule system becomes progressively more disorganized and exhibits structural irregularities such as increased numbers of longitudinal tubules, numerous short dead end branches and complex tubular aggregates. These authors suggested that this disorganization may interfere with synchronous contraction over the entire cell.

In the present study, we examined the 3-dimensional organization of T-tubules in the left ventricle of explanted human hearts using confocal microscopy and EM tomography.

Type
Imaging Cells and Organelles
Information
Microscopy and Microanalysis , Volume 3 , Issue S2: Proceedings: Microscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meeting, Cleveland, Ohio, August 10-14, 1997 , August 1997 , pp. 231 - 232
Copyright
Copyright © Microscopy Society of America 1997

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References

1. Nakamura, S. and Hama, K.Anat.Embryol. 184(1991)540.CrossRefGoogle Scholar

2. Tidball, J.G., Cederdahl, J.E. and Bers, D.M. Cell Tiss.Res. 264 (1991) 298.Google Scholar

3. Robb, R.A. and Barillot, C.IEEE Trans M ed. Image MI-8 (1989) 226.Google Scholar

4. Forbes, M.S., Plantholt, B.A. and Sperelakis, N. J.Ultrastruc.Res. 60 (1977) 327.Google Scholar

5. This work was supported by Grant In Aid #95-282 to MEM from the California Heart Association and RR04050 to MHE from the National Institute of Health.Google Scholar