Logo Medical Science Monitor Basic Research

Call: 1.631.470.9640
Mon-Fri 10 am - 2 pm EST

Contact Us

Logo Medical Science Monitor Basic Research Logo Medical Science Monitor Basic Research Logo Medical Science Monitor Basic Research

28 April 2010

Ultrastructural evidence of myocardial capillary remodeling in peripartum cardiomyopathy

Anna FidzianskaABCDEFG, Ewa WalczakBCDE, Zofia GlinkaBCDE, Grzegorz ReligaBCDE, Malgorzata Sobieszczanska-MalekBCDE, Zofia T. BilinskaABCDEF

Med Sci Monit 2010; 16(5): CS62-66 :: ID: 878530

Abstract

Background
The etiology of peripartum cardiomyopathy (PPCM) is not well understood. Potential causal mechanisms include infection, autoimmune disease, and abnormal response to the hemodynamic stress of pregnancy. Recently it was shown that the development of PPCM in an experimental model is associated with the generation of a cleaved antiangiogenic and proapoptotic 16-kDa form of the nursing hormone prolactin, which impairs the cardiac capillary network and its function. The purpose of this study was to evaluate the ultrastructure of the myocardium in a patient with PPCM and in a comparative group of patients and to identify structural characteristics that may predispose to myocardium dysfunction.
Material and Method
A 28-year-old woman with PPCM had fulminant heart failure leading to the implantation of a biventricular assist device, but no myocarditis was found on histological examination of her myocardial tissue. An ultrastructural study of myocardial tissue taken from three patients (mean age: 22 years, 2 females) with fulminant heart failure not related to PPCM (2 myocarditis, 1 dilated cardiomyopathy) served as a comparison. The ultrastructural analysis revealed the presence of small capillary damage. Vascular lumen occlusion, endothelial cell remodeling, and apoptosis with the appearance of mast cells, plasma cells, and preadipocytes were the most characteristic features of the damaged myocardial tissue with secondary interstitial fibrosis. No vascular pathology of cardiac capillaries was observed in the comparative group.
Results

Conclusions
A myocardial tissue study in PPCM revealed ultrastructural remodeling of small capillaries with the presence of endothelial cell apoptosis and impairment of the microcirculation.

Keywords: Pregnancy, Microscopy, Electron, Transmission, Heart-Assist Devices, Coronary Vessels - ultrastructure, Cardiomyopathies - pathology, Capillaries - ultrastructure, Puerperal Disorders - pathology

0 Comments

Most Viewed Current Articles

13 Apr 2020 : Original article  

Outcome of 24 Weeks of Combined Schroth and Pilates Exercises on Cobb Angle, Angle of Trunk Rotation, Chest...

DOI :10.12659/MSMBR.920449

Med Sci Monit Basic Res 2020; 26:e920449

11 May 2020 : Original article  

Analysis of Psychological and Sleep Status and Exercise Rehabilitation of Front-Line Clinical Staff in the ...

DOI :10.12659/MSMBR.924085

Med Sci Monit Basic Res 2020; 26:e924085

05 Jan 2021 : Review article  

A Southeast Asian Perspective on the COVID-19 Pandemic: Hemoglobin E (HbE)-Trait Confers Resistance Against...

DOI :10.12659/MSMBR.929207

Med Sci Monit Basic Res 2021; 27:e929207

10 Aug 2020 : Clinical Research  

Effects of Cognitive Task Training on Dynamic Balance and Gait of Patients with Stroke: A Preliminary Rando...

DOI :10.12659/MSMBR.925264

Med Sci Monit Basic Res 2020; 26:e925264

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor Basic Research eISSN: 2325-4416
Medical Science Monitor Basic Research eISSN: 2325-4416