No abstract

Recent epidemiologic reports show that black women are at risk for HIV infection and other sexually transmitted diseases (STDs). In this report, we go beyond race and consider a number of social and economic trends that have changed the way many black women experience life. We discuss poverty, loss of status and support linked to declining marriage participation, and female-headed single-parent household structure-all of which influence sexual risks. We also discuss the Centers for Disease Control and Prevention-led national efforts to advance consideration of social determinants of health (SDH) and promotion of health equity in public health activities that may have impact on black and other women.

No abstract

Commonly used monolayer cancer cell cultures fail to provide a physiologically relevant environment in terms of oxygen delivery. Here, we describe a threedimensional (3D) bioreactor system where cancer cells are grown in Matrigel in modified six-well plates. Oxygen is delivered to the cultures through a polydimethylsiloxane (PDMS) membrane at the bottom of the wells, with microfabricated PDMS pillars to control oxygen delivery. The plates receive 3% oxygen from below and 0% oxygen at the top surface of the media, providing a gradient of 3-0% oxygen. We compared growth and transcriptional profiles for cancer cells grown in Matrigel in the bioreactor, 3D cultures grown in 21% oxygen, and cells grown in a standard hypoxia chamber at 3% oxygen. Additionally, we compared gene expression of conventional two-dimensional monolayer culture and 3D Matrigel culture in 21% oxygen. We conclude that controlled oxygen delivery may provide a more physiologically relevant 3D system.