Du Pont has commercialized a new filter media based on flash spinning technology for Tyvek spunbonded olefin. It has'an 'asymmetric pore structure, a greater number of submicron pores, and a smaller average pore size (1). As a consequence, it has superior filtration properties and longer life, and in many instances it can compete with microporous membranes, PTFE laminates, and various melt-blow...

Aim. We investigated whether lecithin-bound iodine (LBI) can protect the integrity of tight junctions of retinal pigment epithelial cells from hypoxia. Method. Cultured human retinal pigment epithelial (ARPE-19) cells were pretreated with LBI. To mimic hypoxic conditions, cells were incubated with CoCl2. We compared the integrity of the tight junctions (TJs) of control to cells with either LBI ...

Multiple forms of occludin were found in Madin-Darby canine kidney (MDCK) cells. In the absence of cell-to-cell contacts, achieved by incubating cells in low-calcium growth medium, a cluster of lower-molecular-weight (LMW) occludin bands (∼65,000-68,000) was present in both MDCK I and II cells. On formation of tight junctions, achieved by changing the low-calcium growth medium to normal-calcium...

Appropriate intestinal barrier maturation during infancy largely depends on colonization with commensal bacteria. Faecalibacterium prausnitzii is an abundant obligate anaerobe that colonizes during weaning and is thought to maintain colonic health throughout life. We previously showed that F. prausnitzii induced Toll-like receptor 2 (TLR2) activation, which is linked to enhanced tight junction ...

Connective-tissue cells produce a family of metalloproteinases which, once activated, can degrade all the components of the extracellular matrix. These potent-enzymes are all inhibited by the tissue inhibitor of metalloproteinases (TIMP), and it was thought that the levels of this inhibitor controlled the extracellular activity of these enzymes. We recently detected a new metalloproteinase inhi...

in this paper we will generalize  some of known results on the tight closure of an ideal to the tight closure of an ideal relative to a module .