Among patients with a history of colorectal adenomas, the use of rofecoxib was associated with an increased cardiovascular risk.

Compared with standard dual therapy, addition of aprepitant was generally well tolerated and provided consistently superior protection against CINV in patients receiving highly emetogenic cisplatin-based chemotherapy.

A first principle one‐dimensional (1‐D) dynamic model for tubular solid oxide fuel cell (SOFC) is developed. To convert the distributed model into a control relevant nonlinear state space model, an approximate analytical solution for reacting gas‐flow problem is proposed, and applied to the 1‐D SOFC dynamic model. Compared to numerical solutions, the proposed solution can significantly reduce requirements in computation, and thus, facilitate dynamic simulations and control applications. Distributed dynamic relations between current density and electromotive force (EMF) are investigated. Diffusion, inherent impedance, primary flow, heat transfer, and internal reforming/shifting reaction are considered simultaneously. Dynamic responses of the interested variables when external current, fuel and air inlet streams are perturbed by step changes are investigated through simulations. © 2008 American Institute of Chemical Engineers AIChE J, 2008.

Regulated adhesion of T cells to extracellular matrix (ECM) proteins is likely to be essential in T cell migration. Constitutive binding of various other cell types to ECM components is mediated by members of the VLA (very late antigen) subfamily of integrins. We describe here the regulated binding of resting CD4+ human T cells to ECM through three VLA integrins: VLA-4 and VLA-5 binding to fibronectin (FN), and a novel pathway of VLA-6 binding to laminin (LN). Binding to ECM is regulated in two ways. First, unlike other VLA-mediated interactions, VLA binding activity of the T cells is rapidly and dramatically augmented with cell activation without change in level of expression of the VLA molecules. Second, binding is regulated with T-cell differentiation; memory T cells express three- to four-fold more VLA-4, VLA-5, and VLA-6 than do naive cells, and bind more efficiently through them to FN and LN.

The aprepitant regimen was more effective than the control regimen for prevention of CINV in patients receiving both an anthracycline and cyclophosphamide.

No abstract

In this randomized trial, rofecoxib significantly reduced the risk of colorectal adenomas, but also had serious toxicity.

SummAryThe CD31 (platelet endothelial cell adhesion molecule-1 [PECAM-1]/endothelial cell adhesion molecule [endoCAM]) molecule expressed on leukocytes, platelets, and endothelial cells is postulated to mediate adhesion to endothelial ceUs and thereby function in immunity, inflammation, and wound healing. We report the following novel features of CD31 which suggest a role for it in adhesion amplification of unique T cell subsets: (a) engagement of CD31 induces the adhesive function of/31 and/~2 integrins; (b) adhesion induction by CD31 immunoglobulin G (IgG) monoclonal antibodies (mAbs) is sensitive, requiring only bivalent mAb; (c) CD31 mAb induces adhesion rapidly, but it is transient; (d) unique subsets of CD4 + and CD8 + T cells express CD31, including all naive (CD45RA +) CD8 T cells; and (e) CD31 induction is selective, inducing adhesive function of fll integrins, particularly very late antigen-4, more efhciently than the f12 integrin lymphocyte function-associated antigen-1. Conversely, CD3 is more effective in inducing ~2-mediated adhesion. Taken together, these findings indicate that unique T cell subsets express CD31, and CD31 has the capacity to induce integrin-mediated adhesion of T cells in a sensitive and selective fashion. We propose that, in collaboration with other receptors/ ligands, CD31 functions in an "adhesion cascade" by amplifying integrin-mediated adhesion of CD31 + T cells to other cells, particularly endothelial calls.