Chronic infection stunts macrophage heterogeneity and disrupts immune-mediated myogenesis.

ABSTRACT: The robust regenerative potential of skeletal muscle is imperative for the maintenance of tissue function across a host of potential insults including exercise, infection, and trauma. The highly coordinated action of multiple immune populations, especially macrophages, plays an indispensable role in guiding this reparative program. However, it remains unclear how skeletal muscle repair proceeds in a chronically inflamed setting, such as infection, where an active immune response is already engaged. To address this question, we used a cardiotoxin injury model to challenge the reparative potential of chronically infected muscle. Compared with regenerating naive skeletal muscle, infected skeletal muscle exhibited multiple indicators of delayed muscle repair including a divergent morphologic r

SUBMITTER: Jin RM 

PROVIDER: S-EPMC6237226 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature