The objective of this study was to evaluate the effect of photodynamic therapy with erythrosine and rose bengal using a light-emitting diode (LED) on planktonic cultures of S. mutans. Ten S. mutans strains, including nine clinical strains and one reference strain (ATCC 35688), were used. Suspensions containing 10⁶ cells/mL were prepared for each strain and were tested under different experiment...

The objective of this study was to determine whether reactive oxygen intermediates (e.g., singlet oxygen and the superoxide radical) can rapidly induce electrophysiological disturbances leading to the genesis of arrhythmias, even in the absence of ischemia and reperfusion. Rat hearts (n = 6 per group) were perfused aerobically at 37 degrees C for 10 minutes without rose bengal and for 5 minutes...

The authors have studied the influence of rose bengal, and, by comparison, of uranin, on choleresis in the rabbit. Uranin induced an increase in bile flow and a decrease in bile salt concentration in bile. These results are consistent with an osmotic mechanism, as proposed by Sperber (1959). By contrast, rose bengal induced a marked decrease in bile flow and an increase in bile salt concentrati...

the use of colored semiconductor oxide like copper (ii) oxide and nickel (ii) oxide for photocatalytic bleaching of rose bengal was investigated in detail. in order to harness the solar energy, the effective wavelength of the photocatalyst is to be expanded into the visible region and that increases the rate of photocatalytic bleaching of the dye. progress of the reaction was observed spectroph...

Some dyes are excreted almost exclusively by the liver and the rate of their elimination from the circulating blood is used as a test of certain aspects of hepatic function in man. Rose bengal is one of these dyes,""a"' and the test in which it is used is similar to the better known procedure utilizing bromsulphalein. Clearance of rose bengal from the blood is known to be retarded in hepatic di...

In a study of aerobically perfused rat hearts, the in situ photoactivation (530-590 nm) of rose bengal (a process that leads to the production of singlet oxygen and superoxide) has been shown to lead to the rapid development of electrocardiographic abnormalities and arrhythmias. With rose bengal concentrations of 1,000, 500, 250, 100, and 50 nmol/l (n = 6/group), photoactivation (3,600 lx) led ...

Investigation was conducted on (90) serum samples, (47) samples were collected from aborted cows and (43) samples from non-aborted cows from Babylon governorate, there were 7, 14.89% cases infected with Brucellaabortus by iELISA test while 10, 21.27% and 9, 19.14% cases infected with Brucellaabortus by Complement fixation test and rose Bengal plate test respectively from infected cow, there wer...

merous than fungi, these organisms used to be suppressed by acidifying the agar medium to pH 4 to 5, but this has been made unnecessary by the addition of rose bengal to suitable media (N. R. Smith and V. T. Dawson, Soil Sci. 58:467, 1944). Counts of fungi were even higher in media containing rose bengal than in acidified media (J. P. Martin, Soil Sci. 69:215, 1960). Actinomycetes grow more slo...

We report our detailed metal-enhanced phosphorescence (MEP) findings using Rose Bengal at low temperature. Silver Island Films (SiFs) in close proximity to Rose Bengal significantly enhance the phosphorescence emission intensity. In this regard, a 5-fold brighter phosphorescence intensity of Rose Bengal was observed from SiFs as compared to a glass control sample at 77 K. In addition, several f...