scholarly journals Ionizing Radiation Induces a Stress Response in Primary Cultures of Rainbow Trout Skin

2004 ◽  
Vol 162 (2) ◽  
pp. 226-232 ◽  
Author(s):  
F. M. Lyng ◽  
M. Lyons-Alcantara ◽  
P. Olwell ◽  
S. Ní Shuilleabháin ◽  
C. Seymour ◽  
...  
2005 ◽  
Vol 164 (1) ◽  
pp. 45-52 ◽  
Author(s):  
Peter M. Olwell ◽  
David C. Cottell ◽  
Sharon Ní Shúilleabháin ◽  
Paola Maderna ◽  
Colin Seymour ◽  
...  

2013 ◽  
Vol 47 (4) ◽  
pp. 376-381 ◽  
Author(s):  
Mihaela Jurdana ◽  
Maja Cemazar ◽  
Katarina Pegan ◽  
Tomaz Mars

Abstract Background. Long term effects of different doses of ionizing radiation on human skeletal muscle myoblast proliferation, cytokine signalling and stress response capacity were studied in primary cell cultures. Materials and methods. Human skeletal muscle myoblasts obtained from muscle biopsies were cultured and irradiated with a Darpac 2000 X-ray unit at doses of 4, 6 and 8 Gy. Acute effects of radiation were studied by interleukin - 6 (IL-6) release and stress response detected by the heat shock protein (HSP) level, while long term effects were followed by proliferation capacity and cell death. Results. Compared with non-irradiated control and cells treated with inhibitor of cell proliferation Ara C, myoblast proliferation decreased 72 h post-irradiation, this effect was more pronounced with increasing doses. Post-irradiation myoblast survival determined by measurement of released LDH enzyme activity revealed increased activity after exposure to irradiation. The acute response of myoblasts to lower doses of irradiation (4 and 6 Gy) was decreased secretion of constitutive IL-6. Higher doses of irradiation triggered a stress response in myoblasts, determined by increased levels of stress markers (HSPs 27 and 70). Conclusions. Our results show that myoblasts are sensitive to irradiation in terms of their proliferation capacity and capacity to secret IL-6. Since myoblast proliferation and differentiation are a key stage in muscle regeneration, this effect of irradiation needs to be taken in account, particularly in certain clinical conditions.


2020 ◽  
Vol 223 (15) ◽  
pp. jeb221069
Author(s):  
Christian Kropf ◽  
Karl Fent ◽  
Stephan Fischer ◽  
Ayako Casanova ◽  
Helmut Segner

ABSTRACTFish gills are a structurally and functionally complex organ at the interface between the organism and the aquatic environment. Gill functions include the transfer of organic molecules, both natural ones and xenobiotic compounds. Whether the branchial exchange of organic molecules involves active transporters is currently not known. Here, we investigated the presence, diversity and functional activity of ATP-binding cassette (ABC) transporters in gills of juvenile rainbow trout. By means of RT-qPCR, gene transcripts of members from the abcb, abcc and abcg subfamilies were identified. Comparisons with mRNA profiles from trout liver and kidney revealed that ABC transporters known to have an apical localization in polarized epithelia, especially abcc2 and abcb1, were under-represented in the gills. In contrast, ABC transporters with mainly basolateral localization showed comparable gene transcript levels in the three organs. The most prominent ABC transporter in gills was an abcb subfamily member, which was annotated as abcb5 based on the synteny and phylogeny. Functional in vivo assays pointed to a role of branchial ABC transporters in branchial solute exchange. We further assessed the utility of primary gill cell cultures to characterize transporter-mediated branchial exchange of organic molecules, by examining ABC transporter gene transcript patterns and functional activity in primary cultures. The gill cultures displayed functional transport activity, but the ABC mRNA expression patterns were different to those of the intact gills. Overall, the findings of this study provide evidence for the presence of functional ABC transporter activity in gills of fish.


1993 ◽  
Vol 1 (2) ◽  
pp. 81-93 ◽  
Author(s):  
Zvi Fuks ◽  
Adriana Haimovitz-Friedman ◽  
Dennis E. Hallahan ◽  
Donald W. Kufe ◽  
Ralph R. Weichselbaum

2009 ◽  
Vol 87 (11) ◽  
pp. 3490-3505 ◽  
Author(s):  
R. L. Vallejo ◽  
C. E. Rexroad ◽  
J. T. Silverstein ◽  
L. L. G. Janss ◽  
G. M. Weber

Biomarkers ◽  
1997 ◽  
Vol 2 (5) ◽  
pp. 287-294 ◽  
Author(s):  
S. Scholz ◽  
I. Behn ◽  
H. Honeck ◽  
C. Hauck ◽  
T. Braunbeck ◽  
...  

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