scholarly journals Comparative histology of wild-type and p53-deficient medaka (Oryzias latipes): nephrotoxic effect of ultraviolet A radiation

2020 ◽  
Vol 19 (2) ◽  
pp. 261-273
Author(s):  
Alaa El-Din H. Sayed ◽  
Shaimaa M. M. Saleh ◽  
Hiroshi Mitani
Keyword(s):  
Ultraviolet Radiation ◽  
Oryzias Latipes ◽  
Ecological Factor ◽  
Ultraviolet A ◽  
Wild Type ◽  
Internal Organs ◽  
Comparative Histology ◽  
Nephrotoxic Effect

Ultraviolet radiation is an ecological factor that directly affects terrestrial organisms through suppression of immunity or damage to internal organs.

scholarly journals Ultraviolet A-induced hematotoxic and genotoxic potential in Nile tilapiaOreochromis niloticus

2019 ◽  
Vol 18 (6) ◽  
pp. 1495-1502 ◽  
Author(s):  
Ahmed Th. A. Ibrahim ◽  
Khaled Y. AbouelFadl ◽  
Alaa G. M. Osman
Keyword(s):  
Ultraviolet Radiation ◽  
Aquatic Organism ◽  
Ultraviolet A ◽  
Solar Ultraviolet Radiation ◽  
Genotoxic Potential ◽  
Solar Ultraviolet

Fish as an aquatic organism could be harmed by various levels of solar ultraviolet radiation (UVA).

Expression and Transmission of Wild-Type Pigmentation in the Skin of Transgenic Orange-Colored Variants of Medaka (Oryzias latipes) Bearing the Gene for Mouse Tyrosinase

1992 ◽  
Vol 5 (5) ◽  
pp. 322-327 ◽  
Author(s):  
JIRO MATSUMOTO ◽  
TOYOKO AKIYAMA ◽  
EUICHI HIROSE ◽  
MIZUHO NAKAMURA ◽  
HIROAKI YAMAMOTO ◽  
...  
Keyword(s):  
Oryzias Latipes ◽  
Wild Type

scholarly journals Full life-cycle assessment of gene flow consistent with fitness differences in transgenic and wild-type Japanese medaka fish (Oryzias latipes)

2010 ◽  
Vol 9 (1) ◽  
pp. 41-57 ◽  
Author(s):  
Kelly M. Pennington ◽  
Anne R. Kapuscinski ◽  
Michael S. Morton ◽  
Anne M. Cooper ◽  
Loren M. Miller
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Gene Flow ◽  
Oryzias Latipes ◽  
Japanese Medaka ◽  
Medaka Fish ◽  
Wild Type ◽  
Full Life Cycle ◽  
Full Life

SOME EFFECTS OF ULTRAVIOLET RADIATION ON SOCKEYE SALMON EGGS AND ALEVINS

1950 ◽  
Vol 28d (1) ◽  
pp. 35-43 ◽  
Author(s):  
G. Mary Bell ◽  
William S. Hoar
Keyword(s):  
Ultraviolet Radiation ◽  
Histological Examination ◽  
Vertebral Column ◽  
Sockeye Salmon ◽  
Oncorhynchus Nerka ◽  
Goblet Cells ◽  
Epidermal Layer ◽  
General Electric ◽  
Internal Organs ◽  
Salmon Eggs

Ultraviolet radiation of wave lengths from 2800 Å to 3100 Å, generated by a General Electric RS sun lamp, was used to irradiate eggs and alevins of the sockeye salmon (Oncorhynchus nerka). Mortality curves are presented for a series of measured dosages. Irradiation of eggs in the later stages of development produced a stimulating effect on the rate of hatching. These premature alevins, which hatched a month before the controls, were abnormal in several respects. The vertebral column was curved downward over the region of the heart, growth was retarded, the yolk was not utilized as rapidly as in the controls and pigmentation was delayed. The mortality was particularly high at the time of hatching and the process was abnormal. Histological examination of irradiated alevins revealed changes in the epidermis and fibroelastic layers of the skin. These were localized to the irradiated regions. Heavy doses produced severe degeneration of the epidermal layer with the formation of granules in the nuclei, the breakdown of the goblet cells, and subsequent desquamation. The changes were less extreme with lower dosages and in these fish a recovery began about 13 days after irradiation. Internal organs and tissues beneath the fibroelastic layers of the skin were not visibly affected by the irradiation.

COCHLIOBOLUS SATIVUS: IV. DRUG-RESISTANT, COLOR, AND NUTRITIONALLY EXACTING MUTANTS

1961 ◽  
Vol 39 (7) ◽  
pp. 1695-1704 ◽  
Author(s):  
R. D. Tinline
Keyword(s):  
Ultraviolet Radiation ◽  
Spontaneous Mutation ◽  
Resistant Mutant ◽  
Cochliobolus Sativus ◽  
Nutritional Deficiencies ◽  
Drug Resistant ◽  
Wild Type ◽  
Wheat Seedlings ◽  
Isolation Technique ◽  
Hyphal Tip

Auxotrophic mutants of Cochliobolus sativus were obtained from survivors of ultraviolet radiation by a modified total-isolation technique. Five or six hyphal tip isolations made from each survivor were tested for nutritional deficiencies. Although 0.48% of the survivors yielded auxotrophs, only about one-third of the hyphal tip isolations from these survivors were auxotrophic. Apparently, mutation in a multinucleate propagule resulted in a heterokaryotic culture and only some of the isolations from a culture were homokaryotic for the mutation. Some of the mutants were morphologically distinct from their parent and one, a methionineless strain, had white spores. Results indicated that recurrent requirements for growth occurred at different mutational sites.A strain resistant to the antibiotic anisomycin appeared as a spontaneous mutation. This strain grew at 1500 and its spores germinated at 1750 p.p.m.; wild-type isolates grew only at 75 and their spores germinated at 100 p.p.m. of the drug. The resistant mutant was pathogenic to wheat seedlings.

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