Russian Heart Failure Journal 2009year Myocardial fibrosis in patients with systolic and diastolic chronic heart failure
Myocardial fibrosis in patients with systolic and diastolic chronic heart failure
Solomakhina N.I., Varshavsky V.A., Popova O.P.
Urgency. Peculiarities of myocardial, particularly interstitial structure in patients with systolic (S-CHF) and diastolic CHF (D-CHF) are an urgent and unsolved problem. Aim. To compare severity and distribution of fibrosis in the myocardium of patients with S-CHF and D-CHF. Materials and methods. The present study investigated the myocardium (autopsy material) of the LV anterior wall in 17 elderly and senile patients (65 to 93 years old) admitted for decompensation and died from progressive CHF, including 8 patients with S-CHF and 9 patients with D-CHF. Control group (CG) consisted of 6 patients without signs of CHF who died from acute disturbance of cerebral circulation. At the first step, severity of fibrosis was evaluated using azan staining by Heidenhain and picrofucsin staining by Van-Gieson of deparaffinated myocardial slices. At the second step, I and III type collagen content was measured using immunohistochemical examination of the myocardium. Results were evaluated by a morphologist using a semi-quantitative scale in a blinded manner. Results. Interstitial fibrosis was significantly more pronounced in the myocardium of patients with D-CHF than in the myocardium of patients with S-CHF; collagen content was significantly higher in the myocardium of patients with D-CHF than in the myocardium of patients with S-CHF. Opposite disproportions were found in the content of I and III type collagen and significant differences in preferential localization of these collagen types.
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