ALL the known colorimetric methods for the determination of phosphate are liable to errors arising from (a) slight changes in acidity and concentration of reagents, and (b) the presence of interfering substances (e.g. fluorides, nitrites etc.). The following method is almost entirely independent of these disturbing factors, and possesses the added advantage of being more sensitive than those pr...

SUMMARY The therapeutic effect of nitrites in myocardial ischemia is considered to be due in part to a reduction of left ventricular volume but measurement of this parameter in man has been difficult. The technique of echocardiography was used to measure changes in left ventricular end-diastolic volume (LVEDV) and end-systolic volume (LVESV) after administration of amyl ni

Many cases of lower urinary tract cancer cannot be attributed to the known risk factors of cigarette smoking and certain occupational chemical exposures. Data from a case-control study conducted on Oahu, Hawaii, from 1979 to 1986 were used to determine the role of several additional exposures in the etiology of lower urinary tract cancer, such as total fluid intake and dietary nitrites and nitr...

Nitrites are widely used for the treatment of angina pectoris, but their mechanism of action is still not clear. Animal experiments have shown that nitrites dilate arteries, arterioles, capillaries, and veins (for a review: see Charlier, 1961). Most workers feel that nitroglycerin acts by dilating coronary vessels, though such an effect has been difficult to show in patients with coronary heart...

Given consumer demand for foods with fewer artificial additives, the objective of this study was to investigate effects reduced use nitrites and phosphates on dry-fermented sausage quality. Four formulations were prepared: (1) control (using standard procedure 0.2% 110 mg/kg sodium nitrite) (2) 50% less nitrite, (3) nitrite ascorbate (225 mg/kg), (4) but no phosphates. Weight loss pH evolution ...