Regulation of sPLA2-IID in Human Decidua: Insights Into the Complexity of the Prostaglandin Pathway in Labor.

Prostaglandins are implicated in the labor process, yet the precise role and regulation of the prostaglandin pathway remains to be elucidated. The first step in the pathway is cleavage of membrane phospholipids by phospholipase A (PLA). Previous work demonstrated upregulation of secretory PLA (sPLA)-IIA with labor in human myometrium, and recent evidence shows that there are numerous PLA isoforms.

Development and validation of primary human myometrial cell culture models to study pregnancy and labour.

Background: The development of the in vitro cell culture model has greatly facilitated the ability to study gene expression and regulation within human tissues. Within the human uterus, the upper (fundal) segment and the lower segment may provide distinct functions throughout pregnancy and during labour. We have established primary cultured human myometrial cells, isolated from both upper and lower segment regions of the pregnant human uterus, and validated them for the purpose of studying human pregnancy and labour.

Prostaglandin E2 represses interleukin 1 beta-induced inflammatory mediator output from pregnant human myometrial cells through the EP2 and EP4 receptors.

Inflammatory mediators, including prostaglandins, cytokines, and chemokines, are strongly implicated in the mechanism of human labor, though their precise roles remain unknown. Here we demonstrate that interleukin 1 beta (IL-1beta) significantly increased the expression and release of interleukin-8 (CXCL8), monocyte chemotactic protein-1 (CCL2), and granulocyte macrophage colony-stimulating factor (CSF2) by primary human myometrial cells. However, this effect was repressed by prostaglandin E(2) (PGE(2)).

Knowledge translation: principles and practicalities for trainees within interdisciplinary health research teams.

Within a dynamic health research environment with trends toward increasing accountability, governments and funding agencies have placed increased emphasis on knowledge translation (KT) as a way to optimize the impact of research investments on health outcomes, research products and health service delivery. As a result, there is an increasing need for familiarity with the principles of KT frameworks and components of KT strategies. Accordingly, health research trainees (graduate students and post-doctoral fellows) must be supported to enhance their capacity to understand KT principles and the practicalities of implementing effective KT practices.