Human CEACAM1 is targeted by a Streptococcus pyogenes adhesin implicated in puerperal sepsis pathogenesis

Life-threatening bacterial infections in women after childbirth, known as puerperal sepsis, resulted in classical epidemics and remain a global health problem. While outbreaks of puerperal sepsis have been ascribed to Streptococcus pyogenes, little is known about disease mechanisms. Here, we show that the bacterial R28 protein, which is epidemiologically associated with outbreaks of puerperal sepsis, specifically targets the human receptor CEACAM1. This interaction triggers events that would favor development of puerperal sepsis, including adhesion to cervical cells, suppression of epithelial wound repair and subversion of innate immune responses. High-resolution structural analysis showed that an R28 domain with IgI3-like fold binds to the N-terminal domain of CEACAM1. Together, these findings demonstrate that a single adhesin-receptor interaction can drive the pathogenesis of bacterial sepsis and provide molecular insights into the pathogenesis of one of the most important infectious diseases in medical history

Nurses and Midwives as Global Partners to Achieve the Sustainable Development Goals in the Anthropocene.

PURPOSE: To highlight ongoing and emergent roles of nurses and midwives in advancing the United Nations 17 Sustainable Development Goals by 2030 at the intersection of social and economic inequity, the climate crisis, interprofessional partnership building, and the rising status and visibility of the professions worldwide. DESIGN: Discussion paper. METHODS: Literature review. FINDINGS: Realizing the Sustainable Development Goals will require all nurses and midwives to leverage their roles and responsibility as advocates, leaders, clinicians, scholars, and full partners with multidisciplinary actors and sectors across health systems. CONCLUSIONS: Making measurable progress toward the Sustainable Development Goals is critical to human survival, as well as the survival of the planet. Nurses and midwives play an integral part of this agenda at local and global levels. CLINICAL RELEVANCE: Nurses and midwives can integrate the targets of the Sustainable Development Goals into their everyday clinical work in various contexts and settings. With increased attention to social justice, environmental health, and partnership building, they can achieve exemplary clinical outcomes directly while contributing to the United Nations 2030 Agenda on a global scale and raising the profile of their professions