Influence of Rose Bengal Dimerization on Photosensitization

2021 ◽  
Author(s):  
Bryan Mendes ◽  
Stefan Kassumeh ◽  
Alan Aguirre‐Soto ◽  
Qing Pei ◽  
Belinda Heyne ◽  
...  
Keyword(s):  
Rose Bengal

Tc-99m Labeled Complexes of Aldehydes and Glutamate as Cholescintigraphic Agents

1975 ◽  
Vol 14 (04) ◽  
pp. 330-338
Author(s):  
L. G. Colombetti ◽  
J. S. Arnold ◽  
W. E. Barnes
Keyword(s):  
Nuclear Medicine ◽  
Gall Bladder ◽  
Rose Bengal ◽  
Valence State ◽  
Monosodium Glutamate ◽  
Kinetic Studies ◽  
Scintillation Camera ◽  
Blood Clearance ◽  
Lower Valence ◽  
Wire Basket

SummaryTc-99m pyridoxylidene glutamate has proven to be an excellent biliary scanning agent, far superior in many respect to the commonly used 1-131 rose bengal. The preparation of the compound as previously reported by Baker et al is too time consuming and requires the use of an autoclave which is not available in most nuclear medicine departments. In our facility, we have been preparing similar compounds using several aldehydes and monosodium glutamate to make labeled complexes having the same pharmacological characteristics. The mixture of monosodium glutamate, aldehyde, and Tc-99m pertechnetate is made slightly alkaline, purged with helium, and placed in a sealed vial. The vial, which is protected by a wire basket, is then heated in a laboratory oven at 130° C for a period of 15 to 20 minutes. During this time, the technetium is reduced to a lower valence state and bound to the complex formed. Chromatographic data show that these compounds are chemically similar to that previously reported. The compounds prepared concentrate in the gall bladder of the rabbit in less than 10 minutes. Kinetic studies have been performed on dogs with a scintillation camera and small digital computer to measure rates of blood clearance, liver and gall bladder uptake, and excretion into the intestine. The aldehyde — glutamate complex promises to be a useful scanning agent for the diagnosis of biliary and hepatocellular diseases.

I-131 Rose Bengal liver and abdominal scanning in infantile jaundice

1976 ◽  
Vol 12 (2) ◽  
pp. 282
Author(s):  
YS Kim ◽  
BS Choi ◽  
HY Kang ◽  
CY Park
Keyword(s):  
Rose Bengal

scholarly journals Multifunctional Polymers Based on Ionic Liquid and Rose Bengal Fragments for the Conversion of CO2 to Carbonates

2021 ◽  
Vol 9 (5) ◽  
pp. 2309-2318
Author(s):  
David Valverde ◽  
Raúl Porcar ◽  
Pedro Lozano ◽  
Eduardo García-Verdugo ◽  
Santiago V. Luis
Keyword(s):  
Ionic Liquid ◽  
Rose Bengal ◽  
Multifunctional Polymers

scholarly journals Effectiveness of Riboflavin and Rose Bengal Photosensitizer Modified Adhesive Resin for Orthodontic Bonding

2021 ◽  
Vol 14 (1) ◽  
pp. 48
Author(s):  
Ali Alqerban
Keyword(s):  
Mtt Assay ◽  
Rose Bengal ◽  
Antibacterial Properties ◽  
Homogenization Method ◽  
Tooth Surface ◽  
Control Group ◽  
Adhesive Resin ◽  
Adhesive Remnant Index ◽  
Significant Difference ◽  
Sem Imaging

This study aimed to evaluate the effect of riboflavin (RF) and rose Bengal (RB) photosensitizer modified adhesive resin on the degree of conversion (DC), and antimicrobial capacity after bonded to tooth surface. Different concentrations of RB and RF were prepared by homogenization method. An ultraviolet light source A (UVA) (375 nm wavelength, 3 mW/cm2 power) was used for 30 min irradiation.FTIR was performed for control and test adhesives to analyze the DC. Antibacterial testing was performed using the MTT assay. Metal brackets were bonded using the modified adhesives and subjected for SEM examination. The surfaces of teeth and metal brackets were examined at ×10 magnification for assessing adhesive remnant index (ARI) after PDT, 24 h and thermocycling. For DC, control group, 0.1% RB and RF after PDT showed the highest value. SEM imaging indicated lowest growth of Streptococcus mutans over 0.5% of RB-PDT and RF-PDT as compared to the control group. The MTT assay outcomes reported that the activity of S. mutans substantially decreased with the addition of a high amount of either RB or RF (p < 0.01). Mean ARI scores showed a significant difference between all groups. This study concluded that 0.1% of either RB or RF after PDT can be used for bonding orthodontic brackets to the tooth surface with substantial antibacterial properties.

Rose bengal-mediated photodynamic inactivation against periodontopathogens in vitro

2021 ◽  
Vol 34 ◽  
pp. 102250
Author(s):  
Dongqing Wang ◽  
Hui Pan ◽  
Yuwei Yan ◽  
Fengqiu Zhang
Keyword(s):  
Rose Bengal ◽  
Photodynamic Inactivation
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