[Biochemistry of myocardium taken at autopsy. Preliminary report].

Abstract

The findings after biochemical analysis of heart muscle taken at autopsy are given in this preliminary communication. Human myosin is made up of two heavy sub-units and two light sub-units: it is similar to cardiac myosin found in other mammals, but is different in certain characteristics, particularly immunological ones. Tropomyosin is made up of two different sub-units. The normal human heart contains 1 mg of collagen and 130 microgram of desoxyribonucleic acid (DNA) per 100 mg of fresh tissue. The degree of cardiac hypertrophy correlates with the increase total DNA within the heart, and with the lowering of myofibrillary Ca2+ ATPase, the concentration in the collagen remaining unchanged providing there is no ischaemic heart disease. These techniques may be used to quantify several factors, such as the degree of sclerosis or the nuclear mass in ill-understood conditions such as the primary cardiomyopathies.

• Authors: J F Leclercq, K Schwartz, C Klotz, J Léger, C Sebag, P Y Hatt, B Swynghedauw
• Journal: Archives des maladies du coeur et des vaisseaux (Arch Mal Coeur Vaiss) Vol. 71 Issue 9 Pg. 1014-22 (Sep 1978) ISSN: 0003-9683 [Print] France
• Vernacular Title: Biochimie du myocarde prélevé à l'autopsie. Premier inventaire.
• PMID: 152617 (Publication Type: English Abstract, Journal Article)

Chemical References

• Actins
• Contractile Proteins
• Tropomyosin
• Troponin
• RNA
• Collagen
• DNA
• Myosins

Topics

• Actins (analysis)
• Autopsy
• Cardiomegaly (metabolism)
• Collagen (analysis)
• Contractile Proteins (analysis)
• Coronary Disease (metabolism)
• DNA (analysis)
• Humans
• Myocardium (analysis)
• Myosins (analysis)
• RNA (analysis)
• Tropomyosin (analysis)
• Troponin (analysis)