Pseudomonas aeruginosa induces localized immunosuppression during pneumonia.

Hospital-acquired bacterial pneumonia is a common and serious complication of modern medical care. Many aspects of such infections remain unclear, including the mechanisms by which invading pathogens resist clearance by the innate immune response and the tendency of the infections to be polymicrobial. Here, we used a mouse model of infection to show that Pseudomonas aeruginosa, a leading cause of hospital-acquired pneumonia, interferes with the ability of recruited phagocytic cells to eradicate bacteria from the lung.

Signet-ring cell change versus signet-ring cell carcinoma: a comparative analysis.

Signet-ring cell change (SCC) is a nonneoplastic condition that morphologically simulates signet-ring cell carcinoma (SRCA). The few case reports on SCC have focused on morphologic characteristics in distinguishing benign from malignant. In biopsy specimens, however, SCC can be easily confused with SRCA, which often demonstrates innocuous cytologic features.

Prevention/reversal of choline deficiency-induced steatohepatitis by a peroxisome proliferator-activated receptor alpha ligand in rats.

Nonalcoholic steatohepatitis, often associated with obesity and diabetes, is a common liver condition in the U.S. Individuals with steatohepatitis are not eligible for liver donation and may be at increased risk from developing complications following lobectomy.