Prodromal angina limited infarct size, enhanced recovery of LV function and improved survival in non-diabetic patients with AMI. However, such beneficial effects of prodromal angina were not observed in diabetic patients, suggesting that diabetes might prevent ischemic preconditioning.

This report presents a novel photo-cross-linker that can cross-link to pyrimidines in nucleic acids under visible light irradiation (λ > 400 nm). This method offers ultrafast photo-cross-linking without any cytotoxicity due to UV irradiation.

A novel enzyme immunoassay of anti-insulin IgG in human serum is described. A serum sample containing anti-insulin IgG was treated with dextran-charcoal at pH 6.0 to remove endogenous insulin and subsequently incubated with dinitrophenyl biotinyl nonspecific rabbit IgG-insulin conjugate. The reaction mixture was further incubated with a rabbit (antidinitrophenyl bovine serum albumin) IgG-coated polystyrene ball to trap the complex formed between anti-insulin IgG and the conjugate. After washing to eliminate nonspecific IgG in the test serum, the polystyrene ball was incubated with dinitrophenyl-L-lysine to elute the complex. The eluate was incubated with an avidin-coated polystyrene ball. Finally, the amount of human antiinsulin IgG in the complex trapped onto the avidin-coated polystyrene ball was measured by incubation with rabbit (antihuman IgG (?-chain)) Fab'-peroxidase conjugate. This enzyme immunoassay was 1,000-fold more sensitive than the conventional enzyme immunoassay, in which an insulinbovine serum albumin-coated polystyrene ball was incubated with a serum sample containing anti-insulin IgG and subsequently with rabbit (antihuman IgG (ychain)) Fab'-peroxidase conjugate. The principle of the novel enzyme immunoassay can be used to more sensitively measure antibodies for most kinds of haptens and antigens than the conventional enzyme immunoassay.

In the creation of double duplex formation with genomic DNA, the probe must be able to invade and hybridize to the duplex DNA. We designed new photoresponsive probes containing K andU; these probes have a high double-duplex invasion capability upon photoirradiation.

An alternative more efficient photo-cross-linker having a d-threoninol skeleton instead of the 2′-deoxyribose backbone in pyranocarbazole was investigated to improve the photoreactivity of photo-cross-linkers.