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Literature DB >> 647749

Leptomeric fibrils and T-tubule desmosomes in the Z-band region of the mouse heart papillary muscle.

Abstract

The papillary muscle of the heart of adult white mice is investigated. Intrafibrillary located leptomeric fibrils, frequently encountered in the Z-band region of the myofibrils. The leptomeric fibrils are always running in a transverse direction and often in close proximity to the transverse tubules (which are also located at this level). There seems to be a close connection between the dense striae of the leptofibrils and the Z-bands of ordinary myofibrils. The leptomeric fibrils are spindle-shaped and have a length varying between 0.6 and 1.2 microgrometer. The banding periodicity of the fibrils is approximately 0.16 micrometer. Occasionally desmosomes are observed in the T-tubule system.

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Year: 1978 PMID： 647749 DOI： 10.1007/BF00222631

Source DB: PubMed Journal: Cell Tissue Res ISSN： 0302-766X Impact factor: 5.249

27 in total

1. Evidence for a structural relationship between successive parallel tubules in the SR network and supernumerary striations of Z line material in purkinje fibers of the chicken, sheep, dog and rhesus monkey heart.

Authors: S M Walker; G R Schrodt; G J Currier
Journal: J Morphol Date: 1975-12 Impact factor: 1.804

Leptomeric fibrils and T-tubule desmosomes in the Z-band region of the mouse heart papillary muscle.

1. Evidence for a structural relationship between successive parallel tubules in the SR network and supernumerary striations of Z line material in purkinje fibers of the chicken, sheep, dog and rhesus monkey heart.

2. Electron microscopic investigations on leptomeric fibrils and leptomeric complexes in the hen and pigeon heart.

3. Ultrastructure of the pigeon papillary muscle with special reference to the sarcoplasmic reticulum.

4. [The fine structure of the human neuromuscular spindle].

5. [On "leptomere myofibrils" in the myocardial cells].

6. Enzymatic digestion and urea extraction on leptomeric structures and normomeric myofibrils in heart muscle cells.

7. Intracytoplasmic junctions in cardiac muscle cells.

8. Small leptomeric organelles in intrafusal muscle fibers of the frog as revealed by electron microscopy.

9. Centrioles in intrafusal muscle fibers.

10. Fine structure of rat intrafusal muscle fibers. The equatorial region.

1. The T-tubule system in the myocardia of the sand rat and mouse as demonstrated by horseradish peroxidase.

2. A peculiar myofibrillar pattern in the murine muscle-tendon junction.

3. The development of Purkinje fibres and ordinary myocytes in the bovine fetal heart. An ultrastructural study.