1. For the purpose to clarify the role of reticuloendothelial cells in the center of erythroblastic islet, the medullary and extramedullary erythropoietic foci in convalescence of phenylhydrazine arternia were observed by light and electron microscopies, and the mode of development of anemia in rabbit having blocked RES. 2. Light microscopic observations revealed the stimulated formation of ery...

Cross-linked sulfonated polyacrylamide (Cross-PAA-SO3H) attached to nano-Fe3O4 as an efficientheterogeneous solid acid catalyst has been used for the preparation of spiro[pyrazoloquinoline-oxindoles]and spiro[chromenopyrazolo-oxindoles] through a four-component reactions of phenylhydrazineor hydrazine hydrate, isatins, ketoesters and naphthylamine or 2-naphthol under reflux co...

Destruction of large amounts of red cells in normal and bile fistula dogs by means of acetyl phenylhydrazine causes no significant alterations of the blood plasma but there is some decrease in the bile cholesterol. During Bartonella canis infection the splenectomized bile fistula dog periodically breaks down large quantities of red cells with slight decrease in the plasma cholesterol and marked...

A novel series of some precursors of 6, 8-dibromoquinazolin-4(3H)-one 61-12 have been synthesized by the based catalysed cyclisation of chromenamido 51-12 with phenylhydrazine hydrate. The overall reaction was base catalysed conventional multistep process. The title compounds have been confirmed by spectral data IR, 1H NMR, 13C NMR and elemental analysis. All the synthesized target molecules we...

The authors have previously reported (1) variations in the permeability of the red blood cells in pernicious anemia. In spite of the considerable r6le played by magnesium in important fields of biology, comparatively little study has been directed towards the magnesium content of the human red blood cells. Greenberg and Schmidt (2) state that magnesium is present in normal erythrocytes in quant...

The present study tested the hypothesis that zebrafish (Danio rerio) aquaporin-1a1 (AQP1a1) serves as a multi-functional channel for the transfer of the small gaseous molecules, CO2 and ammonia, as well as water, across biological membranes. Zebrafish embryos were microinjected with a translation-blocking morpholino oligonucleotide targeted to AQP1a1. Knockdown of AQP1a1 significantly reduced r...

Ovoperoxidase, an enzyme secreted by the eggs of the sea urchin Stronglycocentrotus purpuratus upon activation, catalyzes the formation of dityrosine residues in the fertilization envelope. This cross-linking reaction requires extracellular H2O2, which is produced by the egg during the cyanide-insensitive "respiratory burst" of fertilization. While investigating the possibility that the sea urc...