Effects of blue-light irradiation during dental treatment

Publication date: Available online 31 August 2018Source: Japanese Dental Science ReviewAuthor(s): Fumihiko Yoshino, Ayaka YoshidaSummaryIn dentistry, blue light is widely used for tooth bleaching and restoration procedures involving composite resin. In addition, many dentists use magnification loupes to enable them to provide more accurate dental treatment. Therefore, the use of light is indispensable in dental treatment. However, light can cause various toxicities, and thermal injuries caused by light irradiation are regarded as particularly important. In recent years, the eye damage and non-thermal injuries caused by blue light, the so-called “blue light hazard”, have gained attention. Unfortunately, much of the research in this field has just begun, but our recent findings demonstrated that blue-light irradiation generates reactive oxygen species (ROS) and induces oxidative stress in oral tissue. However, they also showed that such oxidative stress is inhibited by antioxidants. There have not been any reports that suggested that the ROS-induced phototoxicity associated with blue-light irradiation causes direct clinical damage, but some disorders are caused by the accumulation of ROS. Therefore, it is presumed that it is necessary to suppress the accumulation of oxidative stressors in oral tissues during treatment. In the future, we have to promote discussion about the suppression of phototoxicity in dentistry, including concerning the use of antioxidants to pro...
Source: Japanese Dental Science Review - Category: Dentistry Source Type: research

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Publication date: Available online 20 January 2020Source: Molecular and Cellular EndocrinologyAuthor(s): Ronald J. van der Sluis, Menno HoekstraAbstractAdrenal-derived glucocorticoids mediate the physiological response to stress. Chronic disturbances in glucocorticoid homeostasis, i.e. in Addison's and Cushing's disease patients, predispose to the development of atherosclerotic cardiovascular disease. Here we review preclinical and clinical findings regarding the relation between changes in plasma glucocorticoid levels and the atherosclerosis extent. It appears that, although the altered glucocorticoid function can in most...
Source: Molecular and Cellular Endocrinology - Category: Endocrinology Source Type: research
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Source: Gynecological Endocrinology - Category: Endocrinology Authors: Source Type: research
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Source: Gynecological Endocrinology - Category: Endocrinology Authors: Source Type: research
Publication date: Available online 20 January 2020Source: Journal of Pharmaceutical and Biomedical AnalysisAuthor(s): Alexandre Goyon, Peter Yehl, Kelly ZhangABSTRACTMarketed therapies in the pharmaceutical landscape are rapidly evolving and getting more diverse. Small molecule medicines have dominated in the past while antibodies have grown dramatically in recent years. However, the failure of traditional small and large molecules in accessing certain targets has led to increased R&D efforts to develop alternative modalities. Therapeutic oligonucleotides (ONs) can accurately be directed against their ribonucleic acid (RNA...
Source: Journal of Pharmaceutical and Biomedical Analysis - Category: Drugs & Pharmacology Source Type: research
ConclusionsThese results demonstrate that a novel proton-coupled organic cation antiporter plays a predominant role in the blood to brain influx of AC, MA and HA at the BBB, and thus affect the safety of Aconitum species.Graphical abstract
Source: Journal of Ethnopharmacology - Category: Drugs & Pharmacology Source Type: research
This study investigated the cardioprotective effect of vitexin against MIRI and its possible mechanism. Isolated SD rat hearts were subjected to MIRI in a Langendorff perfusion system, and H9c2 cells were subjected to hypoxia/reoxygenation (H/R) in vitro. Ex vivo experiments showed improved left ventricular function and reduced infarct size in the vitexin group. Transmission electron microscopy showed that I/R caused outer mitochondrial membrane rupture, cristae disappearance and vacuolation, while vitexin reduced mitochondrial damage and ultimately reduced cardiomyocyte apoptosis. In vitro, vitexin protected H9c2 cells fr...
Source: Biomedicine and Pharmacotherapy - Category: Drugs & Pharmacology Source Type: research
ConclusionsOur study demonstrates the antitumor effect of IL-24 on endometrial cancer and shows that IL-24 may be a promising therapeutic gene for endometrial cancer gene therapy.Graphical abstract
Source: Biomedicine and Pharmacotherapy - Category: Drugs & Pharmacology Source Type: research
Source: Core Evidence - Category: Drugs & Pharmacology Tags: Core Evidence Source Type: research
Contributors : Diane M Ward ; Alexandra SeguinSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusHepatocyte-specific loss of Slc25a37 (Mitoferrin1) in Mitoferrin2-/- mice did not affect animal viability or liver size suggesting that there must be alternative hepatocyte mitochondrial iron importers that function in the absence of Mitoferrins.
Source: GEO: Gene Expression Omnibus - Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Mus musculus Source Type: research
This study aimed to explore the link between block copolymers’ interfacial properties and nanoscale carrier formation and found out the influence of length ratio on these characters to optimize drug delivery system. A library of diblock copolymers of PEG-PCL and triblock copolymers with additional PEI (PEG-PCL-PEI) were synthesized. Subsequently, a systematic isothermal investigation was performed to explore molecular arrangements of copolymers at air/water interface. Then, structural properties and drug encapsulation in self-assembly were investigated with DLS, SLS and TEM. We found the additional hydrogen bond in t...
Source: Acta Pharmaceutica Sinica B - Category: Cancer & Oncology Source Type: research
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