The Effects of Insulin/IGF-I on Glucose and Leucine Metabolism in the Redclaw Crayfish ( Cherax quadricarinatus )
General and Comparative Endocrinology, ISSN: 0016-6480, Vol: 105, Issue: 3, Page: 287-293
1997
- 21Citations
- 26Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations21
- Citation Indexes21
- 21
- CrossRef18
- Captures26
- Readers26
- 26
Article Description
In recent years, invertebrate peptides have been identified which share substantial homologies with vertebrate insulin and insulin-like growth factors (IGFs), indicating a high degree of conservation of insulin/IGF systems through animal evolution. In a previous study, we provided evidence for the presence of IGF-I-like peptides in the redclaw ( Cherax quadricarinatus ), a species of freshwater crayfish endemic to northern Australia river systems which has attained support as a culture species. The general aim of the current study was to elucidate the functional significance of IGF-I-like peptides in this species by examining the effects of mammalian IGF-I on glucose and leucine metabolism. Juvenile redclaw were injected with a single dose of purified human insulin, recombinant human (rh) IGF-I, or Des-1-3-IGF-I. Glucose levels in redclaw tissues were then determined over an 8-hr period using enzymatic approaches. It was shown that injection of rhIGF-I induced an acute increase in free glucose content in hepatopancreas while Des-1-3-IGF-I and insulin raised free glucose levels in abdominal muscle. Radiolabel tracer approaches also demonstrated that injection of rhIGF-I increased glycogen synthesis in abdominal muscle and elevated the incorporation of leucine into protein in both abdominal muscle and hepatopancreas. Taken together, the findings of this study suggest that IGF-I-like peptides are biologically active in this species and may be of significance to metabolic and growth-related processes.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0016648096968240; http://dx.doi.org/10.1006/gcen.1996.6824; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0031106145&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/9073490; https://linkinghub.elsevier.com/retrieve/pii/S0016648096968240; https://dx.doi.org/10.1006/gcen.1996.6824
Elsevier BV
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