Breastfeeding, Cellular Immune Activation, and Myocardial Recovery in Peripartum Cardiomyopathy.

Abstract

The etiology of peripartum cardiomyopathy remains unknown. One hypothesis is that an increase in the 16-kDa form of prolactin is pathogenic and suggests that breastfeeding may worsen peripartum cardiomyopathy by increasing prolactin, while bromocriptine, which blocks prolactin release, may be therapeutic. An autoimmune etiology has also been proposed. The authors investigated the impact of breastfeeding on cellular immunity and myocardial recovery for women with peripartum cardiomyopathy in the IPAC (Investigations in Pregnancy Associated Cardiomyopathy) study. Women who breastfed had elevated prolactin, and prolactin levels correlated with elevations in CD8+ T cells. However, despite elevated prolactin and cytotoxic T cell subsets, myocardial recovery was not impaired in breastfeeding women.

• Authors: Agnes Koczo, Amy Marino, Arun Jeyabalan, Uri Elkayam, Leslie T Cooper, James Fett, Joan Briller, Eileen Hsich, Lori Blauwet, Charles McTiernan, Penelope A Morel, Karen Hanley-Yanez, Dennis M McNamara, IPAC Investigators
• Journal: JACC. Basic to translational science (JACC Basic Transl Sci) Vol. 4 Issue 3 Pg. 291-300 (Jun 2019) ISSN: 2452-302X [Electronic] United States
• PMID: 31312753 (Publication Type: Journal Article)