New Radical Scavenging and Ultraviolet-A Protecting Prenylated Dioxopiperazine Alkaloid Related to Isoechinulin A from a Marine Isolate of the Fungus Aspergillus.

ChemInform ◽  
2004 ◽  
Vol 35 (46) ◽  
Author(s):  
Yong Li ◽  
Xifeng Li ◽  
Jung Sook Kang ◽  
Hong Dae Choi ◽  
Byeng Wha Son
Keyword(s):  
Radical Scavenging ◽  
Ultraviolet A ◽  
Marine Isolate

scholarly journals Circumdatin I, a New Ultraviolet-A Protecting Benzodiazepine Alkaloid from a Marine Isolate of the Fungus Exophiala

2008 ◽  
Vol 61 (1) ◽  
pp. 40-42 ◽  
Author(s):  
Dahai Zhang ◽  
Xiudong Yang ◽  
Jung Sook Kang ◽  
Hong Dae Choi ◽  
Byeng Wha Son
Keyword(s):  
Ultraviolet A ◽  
Marine Isolate

ChemInform Abstract: Circumdatin I, a New Ultraviolet-A Protecting Benzodiazepine Alkaloid from a Marine Isolate of the Fungus Exophiala.

ChemInform ◽  
2008 ◽  
Vol 39 (31) ◽  
Author(s):  
Dahai Zhang ◽  
Xiudong Yang ◽  
Jung Sook Kang ◽  
Hong Dae Choi ◽  
Byeng Wha Son
Keyword(s):  
Ultraviolet A ◽  
Marine Isolate

A New Radical Scavenging Anthracene Glycoside, Asperflavin Ribofuranoside, and Polyketides from a Marine Isolate for the Fungus Microsporum.

ChemInform ◽  
2006 ◽  
Vol 37 (47) ◽  
Author(s):  
Yong Li ◽  
Xifeng Li ◽  
Uk Lee ◽  
Jung Sook Kang ◽  
Hong Dae Choi ◽  
...  
Keyword(s):  
Radical Scavenging ◽  
Marine Isolate

scholarly journals A New Radical Scavenging Anthracene Glycoside, Asperflavin Ribofuranoside, and Polyketides from a Marine Isolate of the Fungus Microsporum

2006 ◽  
Vol 54 (6) ◽  
pp. 882-883 ◽  
Author(s):  
Yong Li ◽  
Xifeng Li ◽  
Uk Lee ◽  
Jung Sook Kang ◽  
Hong Dae Choi ◽  
...  
Keyword(s):  
Radical Scavenging ◽  
Marine Isolate

scholarly journals Protoprotection and Anti-inflammatory Properties of Non–cytotoxic Melanin from Marine Isolate Providencia rettgeri strain BTKKS1

2017 ◽  
Vol 14 (4) ◽  
pp. 1475-1484 ◽  
Author(s):  
Noble Kiriyachan Kurian ◽  
Sarita Ganapathy Bhat
Keyword(s):  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Proton Nmr ◽  
Dependent Manner ◽  
Protection Factor ◽  
Providencia Rettgeri ◽  
Marine Isolate ◽  
Ic50 Value ◽  
Protection Devices ◽  
Anti Inflammatory

ABSTRACT: Photoprotection and Anti-inflammatory properties of characterized melanin produced by marine proteobacterium Providencia rettgeri strain BTKKS1 was explored in the study. Characterization of melanin was carried out by chemical, FTIR, proton NMR and EPR analysis. The radical scavenging property was estimated using DPPH assay and Fe 2+ chelating potential was also evaluated. Effect of melanin on the activities of Cyclooxygenase, Lipoxygenase, Myeloperoxidase and Cellular Nitrite is used to evaluate anti-inflammatory potential. Enhancement of Sun Protection Factor (SPF) is evaluated to study its effectiveness in photoprotection. Cytotoxicity of melanin was estimated using MTT assay.The chemical, FTIR, proton NMR and EPR characterization were typical of eumelanin. The pigment also showed profound radical scavenging activity (63.73%) and metal chelating potential (97.09%). Melanin significantly inhibited the activity of the inflammatory enzymes in a dose dependent manner and enhanced the SPF value of commercial sunscreens at an average of 2.64 factors. This melanin was also less cytotoxic with an IC50 value of 97.87μg/mL. The immense Anti-inflammatory property of the pigment can be utilized in therapeutic applications. The photoprotection potential of melanin can be utilized in cosmetic formulations, UV protection devices etc.

Ultrastructural changes in murine lymphoma cells exposed to ultraviolet-A radiation

1991 ◽  
Vol 49 ◽  
pp. 104-105
Author(s):  
Delma P. Thomas ◽  
Dianne E. Godar
Keyword(s):  
Medical Devices ◽  
Blood Cells ◽  
White Blood Cells ◽  
Consumer Products ◽  
Ultrastructural Changes ◽  
Ultraviolet A ◽  
Uv Spectrum ◽  
Lymphoma Cells ◽  
Murine Lymphoma ◽  
Transmission Electron

Ultraviolet radiation (UVR) from all three waveband regions of the UV spectrum, UVA (320-400 nm), UVB (290-320 nm), and UVC (200-290 nm), can be emitted by some medical devices and consumer products. Sunlamps can expose the blood to a considerable amount of UVR, particularly UVA and/or UVB. The percent transmission of each waveband through the epidermis to the dermis, which contains blood, increases in the order of increasing wavelength: UVC (10%) < UVB (20%) < UVA (30%). To investigate the effects of UVR on white blood cells, we chose transmission electron microscopy to examine the ultrastructure changes in L5178Y-R murine lymphoma cells.

Malignant melanoma after psoralen and ultraviolet A (PUVA) therapy

1998 ◽  
Vol 138 (6) ◽  
pp. 1100-1101 ◽  
Author(s):  
Wolf ◽  
SchOllnast ◽  
Hofer ◽  
Smolle ◽  
Kerl
Keyword(s):  
Malignant Melanoma ◽  
Puva Therapy ◽  
Ultraviolet A
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