In vitro lung slices: a powerful approach for assessment of lung pathophysiology.

This review summarizes the existing literature on the use of in vitro lung slices to study pulmonary physiology, pharmacology, pathogenesis and toxicity. Since in vitro lung slices maintain cell-cell and cell-matrix relationships in a highly controllable and accessible setting, they offer many advantages over both in vivo and single-cell culture systems. With the advent of high-production slicers, lung slices can be rapidly and reproducibly generated, including from animals treated in vivo. Slices can then be treated in vitro and analyzed using high-throughput technology. Therefore, the lung-slice system offers broad, current and unrealized potential for the detection of toxicity and the delineation of pathophysiologic and therapeutic mechanisms.

Assessment of immune activation in mice before and after eradication of mite infestation.

Mite infestation of mice remains a persistent problem for many institutions, leading to numerous health problems and creating unknown and unwanted variables for research. In this study, mice with mite infestation demonstrated significantly higher levels of inflammatory cytokines, both at draining lymph nodes (axillary) and systemically, as compared with mice without mites. In addition, histologic evaluation revealed significant inflammation in mite-infested mice. Inflammatory changes were still present in the skin of mice at 6 to 8 wk after treatment, despite absence of detectable infestation at that time. Because these significant and lasting local and systemic changes have the potential to alter research findings, eradication of mites infestations should be an important goal for all institutions.