prolonged incubation. HuO lytic titers were typically lower than those for Rb in the same sera.In 91 commercial drakes complete HuO lysis occurred in 14/91 (15%), ≥ 50% lysis in 51/91 (56%), but 7 (8%) sera were negative. Heating sera reduced lytic capacity for both HuO and Rb but not to the same degree. Nearly all HuO lytic capacity was removed after 10 min exposure to 57°C while the same trea...

The development of vectors such as P1, P1-derived artificial chromosome (PAC) or bacterial artificial chromosome (BAC) (2,6,8) has permitted the cloning of large DNA fragments. These vectors have become common in largescale sequencing and mapping projects. Therefore, a reliable primer walking protocol for P1 plasmids is desirable. It has been demonstrated previously that sequencing of P1 plasmi...

Platelet facilitation of clot lysis was studied using the dilute clot lysis assay, a standardized assay for fibrinolysis shown to correlate with the development of postoperative deep vein thrombosis. Clots prepared from dilute platelet poor plasma showed prolonged clot lysis when compared with clots prepared in a similar fashion from dilute platelet rich plasma. Since in the presence of platele...

The dependence of antibody-and-complement-mediated lysis of virus-infected cells on the alternative pathway was examined utilizing the isolated cytolytic alternative pathway--a system consisting of the six purified proteins of the alternative pathway of activation (C3, factors B and D, beta 1H, C3b inactivator and properdin), and the five proteins of the membrane attack pathway (C5--9) of compl...

Several studies suggest that macrophage death and subsequent lysis contribute to the development of advanced atherosclerotic lesions. Although oxidized LDL (OxLDL) is thought to contribute to lesion formation and induces macrophage apoptosis, the mechanisms underlying macrophage lysis have not been well defined. To determine if induction of apoptosis in human macrophages also promotes cell lysi...

Cell lysis was demonstrated on a microfluidic CD (Compact Disc) platform. In this purely mechanical lysis method, spherical particles (beads) in a lysis chamber microfabricated in a CD, cause disruption of mammalian (CHO-K1), bacterial (Escherichia coli), and yeast (Saccharomyces cerevisiae) cells. Interactions between beads and cells are generated in the rimming flow established inside a parti...

On-chip lysis is required in many lab-on-chip applications involving cell studies. In these applications, the complete disruption of the cellular membrane and a high lysis yield is essential. Here, we present a novel approach to lyse cells on-chip through the application of electric discharges from a corona handheld device. The method only requires a microfluidic chip and a low-cost corona devi...

A highly effective, reagentless, mechanical cell lysis device integrated in microfluidic channels is reported. Sample preparation, specifically cell lysis, is a critical element in 'lab-on-chip' applications. However, traditional methods of cell lysis require purification steps or complicated fabrication steps that a simple mechanical method of lysis may avoid. A simple and effective mechanical...

Hospital Physician September 2008 25 T umor lysis syndrome (TLS) is a collection of metabolic abnormalities that occur as a result of the release of intracellular contents following lysis of malignant cells, typically after initiation of chemotherapy. The features of TLS include hyperphosphatemia, hyperuricemia, hypocalcemia, hyperkalemia, and acute kidney injury. These features are observed wh...