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FcR nonbinding anti-CD3 epsilon mAbs elicit partial TCR signaling that leads to T cell unresponsiveness and tolerance in vivo. In this study, the membrane-proximal events that promote T cell inactivation by FcR nonbinding anti-CD3 mAbs were examined. In the context of FcR nonbinding anti-CD3, TCR complexes did not aggregate and failed to translocate into(More)
The effect of mechanical strain on transcription and expression of the immediate-early genes, early growth response gene-1 (Egr-1), c-jun, and c-fos, was investigated in neonatal rat aortic vascular smooth muscle (VSM) cells. Cells grown on silicone elastomer plates were subjected to cyclic mechanical strain (1 Hz) at various durations and magnitudes. Egr-1(More)
Plant acetohydroxy acid isomeroreductase (EC, the second enzyme of the branched chain amino acid biosynthetic pathway, has been submitted to high-throughput screening for herbicide discovery. We report here the discovery of a new class of compounds belonging to the thiadiazole family, which exhibit a strong inhibitory effect on this plant enzyme.(More)
Chronic inflammation has been associated with increased risk for developing gastrointestinal cancer. Interleukin-23 (IL-23) receptor signaling has been correlated with inflammatory bowel disease pathogenesis, as well as promotion of tumor growth. However, little is known about the relative potential for IL-23-directed causality in gut tumorigenesis. We(More)
Proliferation of cultured neonatal vascular smooth muscle (VSM) cells is enhanced by exposure to cyclic mechanical strain, in part through autocrine action of secreted platelet-derived growth factor (PDGF). We examined transcription factors and DNA response elements that may participate in the induction of PDGF-A gene transcription by mechanical strain.(More)
Lymphedema of the penis and scrotum is a rare entity characterized by enlargement of the skin and subcutaneous tissue of the genital region due to lymphatic drainage impairment. This clinical condition is more frequent in tropical countries due to a higher incidence of filariasis, which, in turn, is the main etiology. We describe the case of a 33-year-old(More)
Detection of nonselective adenoviruses in tissue- or tumor-selective oncolytic adenovirus preparations presents a technical challenge because of the conditionally replication-competent nature of oncolytic adenoviruses. Although quantitative PCR has been used extensively for detecting specific genes that are likely present in nonselective recombinants, the(More)
The production cross sections and the kinematical properties of primary residual nuclei have been studied in reactions 197 Au + p, 208 Pb + p,d, 238 U + p,d, and 238 U + 208 Pb at energies around 1 A GeV. The measured kinematical properties of the residues were also used to disentangle the relevant reaction mechanisms, spallation-evaporation and(More)