Development and validation of a radioimmunoassay for fish insulin-like growth factor I (IGF-I) and the effect of aquaculture related stressors on circulating IGF-I levels
This paper describes the development and validation of a commercially available radioimmunoassay (RIA) for the detection of fish insulin-like growth factor-I (IGF-I). The assay was developed using recombinant barramundi IGF-I as antigen and recombinant tuna IGF-I as radiolabelled tracer and standard...
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ftunivnewengland:oai:rune.une.edu.au:1959.11/15224 2023-08-27T04:08:33+02:00 Development and validation of a radioimmunoassay for fish insulin-like growth factor I (IGF-I) and the effect of aquaculture related stressors on circulating IGF-I levels Dyer, Anthony R Upton, Zee Stone, David Thomas, Philip Business Economics and Public Policy Soole, Kathleen Lydia Higgs, Naomi Quinn, Kirsty Carragher, John F 2004 https://hdl.handle.net/1959.11/15224 en eng Academic Press 10.1016/j.ygcen.2003.10.002 https://hdl.handle.net/1959.11/15224 une:15440 Biochemistry and Cell Biology Journal Article 2004 ftunivnewengland 2023-08-10T19:41:35Z This paper describes the development and validation of a commercially available radioimmunoassay (RIA) for the detection of fish insulin-like growth factor-I (IGF-I). The assay was developed using recombinant barramundi IGF-I as antigen and recombinant tuna IGF-I as radiolabelled tracer and standard. Assay sensitivity was 0.15 ng/ml, inter-assay variation was 16% (n=9) and intra-assay variation was 3% (n=10). Cross reactivity of less than 0.01% was found with salmon insulin, salmon IGF-II and barramundi IGF-II, less than 0.5% with human IGF-I and less than 1% with human IGF-II. Parallel dose-response inhibition curves were shown for barramundi ('Lates calcarifer'), coho salmon ('Oncorhynchus kisutch'), Southern Bluefin tuna ('Thunnus maccoyii'), tilapia ('Oreochromis mossambicus'), and seabream ('Pagrus auratus') IGF-I. The assay was then used to measure stress related changes in different aquacultured fish species. Salt water acclimated Atlantic salmon smolts ('Salmo salar') bathed for 2 h in fresh water showed significantly lower IGF-I concentrations than control smolts two days after the bath (53.1 compared to 32.1 ng/ml), with levels of IGF-I also lower in smolts exhibiting stunted growth (stunts). Capture and confinement of wild tuna in sea-cages resulted in a significant decrease in IGF-I levels (28 ng/ml) when compared to tuna captured and sampled immediately (48 ng/ml), but had recovered to starting levels after 3 weeks (43 ng/ml). Handling and isolation in silver perch ('Bidyanus bidyanus') led to a gradual decline in IGF-I over a 12 h period (36-19 ng/ml) but showed signs of recovery by 24 h (24 ng/ml) and had recovered fully 72 h after treatment (40 ng/ml). A similar trial in black bream ('Acanthopagrus butcherii') showed comparable results with IGF-I levels gradually decreasing (40-26 ng/ml) over 24 h, results that were mirrored by cortisol concentrations which increased during this time (1-26 ng/ml). In the studies presented here changes in IGF-I levels were not observed for at least 3 h after ... Article in Journal/Newspaper Atlantic salmon Salmo salar Research UNE - University of New England at Armidale, NSW Australia |
institution |
Open Polar |
collection |
Research UNE - University of New England at Armidale, NSW Australia |
op_collection_id |
ftunivnewengland |
language |
English |
topic |
Biochemistry and Cell Biology |
spellingShingle |
Biochemistry and Cell Biology Dyer, Anthony R Upton, Zee Stone, David Thomas, Philip Business Economics and Public Policy Soole, Kathleen Lydia Higgs, Naomi Quinn, Kirsty Carragher, John F Development and validation of a radioimmunoassay for fish insulin-like growth factor I (IGF-I) and the effect of aquaculture related stressors on circulating IGF-I levels |
topic_facet |
Biochemistry and Cell Biology |
description |
This paper describes the development and validation of a commercially available radioimmunoassay (RIA) for the detection of fish insulin-like growth factor-I (IGF-I). The assay was developed using recombinant barramundi IGF-I as antigen and recombinant tuna IGF-I as radiolabelled tracer and standard. Assay sensitivity was 0.15 ng/ml, inter-assay variation was 16% (n=9) and intra-assay variation was 3% (n=10). Cross reactivity of less than 0.01% was found with salmon insulin, salmon IGF-II and barramundi IGF-II, less than 0.5% with human IGF-I and less than 1% with human IGF-II. Parallel dose-response inhibition curves were shown for barramundi ('Lates calcarifer'), coho salmon ('Oncorhynchus kisutch'), Southern Bluefin tuna ('Thunnus maccoyii'), tilapia ('Oreochromis mossambicus'), and seabream ('Pagrus auratus') IGF-I. The assay was then used to measure stress related changes in different aquacultured fish species. Salt water acclimated Atlantic salmon smolts ('Salmo salar') bathed for 2 h in fresh water showed significantly lower IGF-I concentrations than control smolts two days after the bath (53.1 compared to 32.1 ng/ml), with levels of IGF-I also lower in smolts exhibiting stunted growth (stunts). Capture and confinement of wild tuna in sea-cages resulted in a significant decrease in IGF-I levels (28 ng/ml) when compared to tuna captured and sampled immediately (48 ng/ml), but had recovered to starting levels after 3 weeks (43 ng/ml). Handling and isolation in silver perch ('Bidyanus bidyanus') led to a gradual decline in IGF-I over a 12 h period (36-19 ng/ml) but showed signs of recovery by 24 h (24 ng/ml) and had recovered fully 72 h after treatment (40 ng/ml). A similar trial in black bream ('Acanthopagrus butcherii') showed comparable results with IGF-I levels gradually decreasing (40-26 ng/ml) over 24 h, results that were mirrored by cortisol concentrations which increased during this time (1-26 ng/ml). In the studies presented here changes in IGF-I levels were not observed for at least 3 h after ... |
format |
Article in Journal/Newspaper |
author |
Dyer, Anthony R Upton, Zee Stone, David Thomas, Philip Business Economics and Public Policy Soole, Kathleen Lydia Higgs, Naomi Quinn, Kirsty Carragher, John F |
author_facet |
Dyer, Anthony R Upton, Zee Stone, David Thomas, Philip Business Economics and Public Policy Soole, Kathleen Lydia Higgs, Naomi Quinn, Kirsty Carragher, John F |
author_sort |
Dyer, Anthony R |
title |
Development and validation of a radioimmunoassay for fish insulin-like growth factor I (IGF-I) and the effect of aquaculture related stressors on circulating IGF-I levels |
title_short |
Development and validation of a radioimmunoassay for fish insulin-like growth factor I (IGF-I) and the effect of aquaculture related stressors on circulating IGF-I levels |
title_full |
Development and validation of a radioimmunoassay for fish insulin-like growth factor I (IGF-I) and the effect of aquaculture related stressors on circulating IGF-I levels |
title_fullStr |
Development and validation of a radioimmunoassay for fish insulin-like growth factor I (IGF-I) and the effect of aquaculture related stressors on circulating IGF-I levels |
title_full_unstemmed |
Development and validation of a radioimmunoassay for fish insulin-like growth factor I (IGF-I) and the effect of aquaculture related stressors on circulating IGF-I levels |
title_sort |
development and validation of a radioimmunoassay for fish insulin-like growth factor i (igf-i) and the effect of aquaculture related stressors on circulating igf-i levels |
publisher |
Academic Press |
publishDate |
2004 |
url |
https://hdl.handle.net/1959.11/15224 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
10.1016/j.ygcen.2003.10.002 https://hdl.handle.net/1959.11/15224 une:15440 |
_version_ |
1775349367579869184 |