The nitroblue tetrazolium (NBT) test has been evaluated as a means of differentiating episodes of infection and rejection in 10 cadaver kidney transplant recipients. Normal NBT values were observed during all 11 episodes of acute rejection. A significant elevation of the NBT score was encountered in six of eight episodes of infection after transplantation. A positive NBT result is useful additi...

Neuronal bungarotoxin (NBT), a snake venom neurotoxin, selectively blocks nicotinic receptors in many peripheral and central neuronal preparations. a-Bungarotoxin (aBT), on the other hand, a second toxin isolated from the venom of the same snake, is an ineffective nicotinic antagonist in most vertebrate neuronal preparations studied thus far. To examine central nicotinic receptors recognized by...

Tretinoin tocoferil is an a-tocopherol ester of all-trans retinoic acid (RA) and safely used in the treatment of skin ulcer. Tretinoin tocoferil inhibited proliferation of human promyelocytic leukemia HL-60 cells and induced granulocytic differentiation of the cells, but less than RA. a-Tocopherol did not affect differentiation of HL-60 cells, but at high concentrations enhanced its nitroblue t...

Polymorphonuclear neutrophils' chemotaxis, surface charge, superoxide anions generation, NBT (nitro blue tetrazolium) reduction and intracellular lysozyme, and beta-glucuronidase content were estimated in patients with type I diabetes mellitus in a similar state of metabolic control. The chemotaxis of diabetic cells toward bacterial chemotactic factors was similar to controls, whereas migration...

The NBT test is a non-specific test of neutrophil membrane stimulation which has application to the study of neutrophil function, particularly in the septicaemic patient. An improved cytochemical test which eliminates potential sources of laboratory error has been developed. Venous or capillary blood samples may be studied and the technique can be applied to the neutropenic patient since availa...

A cross sectional pilot study using convenient sampling method was conducted to evaluate various immunological parameters in preterm babies and term babies. Cord blood from 36 preterm and 36 term babies was taken and the following parameters were determined: Immunoglobulin G, A and M, Complement 3 and 4 and NBT. The results showed that NBT was significantly reduced in preterm babies compared to...

The objective of this study was to evaluate the effects of tetramethylpyrazine (TMP) in combination with arsenic trioxide (As2O3) on the proliferation and differentiation of HL-60 cells. The HL-60 cells were treated with 300 µg/mL TMP, 0.5 µM As2O3, and 300 µg/mL TMP combined with 0.5 µM As2O3, respectively. The proliferative inhibition rates were determined with MTT. Differentiation was detect...

We studied the chemistry of the fructosamine assay for glycated serum proteins by using the model Amadori compound N alpha-formyl-N epsilon-fructoselysine (fFL), an analog of glycated lysine residues in protein. Free lysine was formed at approximately 70% yield during a standard 20-min incubation of fFL with alkaline nitroblue tetrazolium (NBT) at 37 degrees C. Although superoxide dismutase (SO...