Investigation of insulin-like growth factor-1 gene with egg-laying traits in the Muscovy duck (<i>Cairina moschata</i>)

Wu, Xu; Liu, X.T.; Lan, Jianwu; Wan, Xuebei; Yan, Mei-Jiao; Lian, Sen; Li, A.

doi:10.1139/cjas-2015-0024

Cited by 15 publications

(17 citation statements)

References 62 publications

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“…The plasma protein encoded by Ttr is involved in thyroid hormone and vitamin A transport (Chang et al 1999). Its translated peptide is primarily secreted by the liver to stimulate normal growth in birds in response to hypothalamic stimuli (Wu et al 2016). Its translated peptide is primarily secreted by the liver to stimulate normal growth in birds in response to hypothalamic stimuli (Wu et al 2016).…”

Section: Hepatic Transcriptomic Effects Of Ofr Exposurementioning

confidence: 99%

“…The gene Igf1 is critical to growth hormone and thyroid hormone crosstalk. Its translated peptide is primarily secreted by the liver to stimulate normal growth in birds in response to hypothalamic stimuli (Wu et al 2016). These 3 genes were also down-regulated in CEHs following administration of other flame retardants such as TDCPP and tris (1, 3-dichloro-2propyl) phosphate (Farhat et al 2014).…”

Section: Hepatic Transcriptomic Effects Of Ofr Exposurementioning

confidence: 99%

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Prioritization of 10 organic flame retardants using an avian hepatocyte toxicogenomic assay

Pagé-Larivière

Chiu

Jones

et al. 2018

Enviro Toxic and Chemistry

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As the number of chemicals developed and used by industry increases, the inherent limitations of traditional toxicology approaches become an unavoidable issue. To help meet the demand for toxicity evaluation, new methods, such as high-throughput toxicity screening, are currently being developed to permit rapid determination of toxic, molecular, and/or biochemical effects of a wide range of chemicals. In the present study, we demonstrate the utility of an avian in vitro toxicogenomics screening approach to determine the cytotoxic and transcriptomic effects of 10 organic flame retardants (OFRs) currently of international priority for ecological risk evaluation to prioritize and inform future toxicological studies. Hepatocytes from 2 avian species, chicken and double-crested cormorant, were prepared and exposed for 24 h to various concentrations (0-300 μM) of the following 10 OFRs: Chemical Abstracts Service registration numbers 29761-21-5, 56803-37-3 (p-tert-butylphenyl diphenyl phosphate [BPDP]), 65652-41-7, 68937-41-7 (phenol, isopropylated, phosphate [3:1] [IPPP]), 95906-11-9, 19186-97-1, 26040-51-7, 35948-25-5, 21850-44-2, and 25713-60-4. Cell viability, the 7-ethoxyresorufin-O-deethylase assay, and transcriptomic analysis using species-specific ToxChip polymerase chain reaction arrays were performed to evaluate the in vitro effect of these OFRs. Of the 10 OFRs assessed, BPDP and IPPP elicited the strongest cytotoxic and transcriptomic responses in both chicken and double-crested cormorant hepatocytes and are therefore recommended as priority candidates for further wildlife toxicological investigations. Environ Toxicol Chem 2018;37:3134-3144. © 2018 Crown in the right of Canada. Published by Wiley Periodicals Inc. on behalf of SETAC.

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Section: Hepatic Transcriptomic Effects Of Ofr Exposurementioning

confidence: 99%

Section: Hepatic Transcriptomic Effects Of Ofr Exposurementioning

confidence: 99%

Prioritization of 10 organic flame retardants using an avian hepatocyte toxicogenomic assay

Pagé-Larivière

Chiu

Jones

et al. 2018

Enviro Toxic and Chemistry

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“…In addition, different variants of IGF-1 genes, as well as variation in IGF-1 levels in poultry, resulted mainly in variation in productivity, i.e. different numbers of eggs produced or variation in egg quality (Hocking et al, 1994;Nagaraja et al, 2000;Wu et al, 2016).…”

Section: Livermentioning

confidence: 99%

Fine-tuning of seasonal timing of breeding is regulated downstream in the underlying neuro-endocrine system in a small songbird

Verhagen

Laine

Mateman

et al. 2019

Journal of Experimental Biology

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The timing of breeding is under selection in wild populations as a result of climate change, and understanding the underlying physiological processes mediating this timing provides insight into the potential rate of adaptation. Current knowledge on this variation in physiology is, however, mostly limited to males. We assessed whether individual differences in the timing of breeding in females are reflected in differences in candidate gene expression and, if so, whether these differences occur in the upstream (hypothalamus) or downstream (ovary and liver) parts of the neuroendocrine system. We used 72 female great tits from two generations of lines artificially selected for early and late egg laying, which were housed in climatecontrolled aviaries and went through two breeding cycles within 1 year. In the first breeding season we obtained individual egg-laying dates, while in the second breeding season, using the same individuals, we sampled several tissues at three time points based on the timing of the first breeding attempt. For each tissue, mRNA expression levels were measured using qPCR for a set of candidate genes associated with the timing of reproduction and subsequently analysed for differences between generations, time points and individual timing of breeding. We found differences in gene expression between generations in all tissues, with the most pronounced differences in the hypothalamus. Differences between time points, and early-and late-laying females, were found exclusively in the ovary and liver. Altogether, we show that finetuning of the seasonal timing of breeding, and thereby the opportunity for adaptation in the neuroendocrine system, is regulated mostly downstream in the neuro-endocrine system.

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“…Studies in female chicken and rabbit suggests that IGF-1 is also produced by the ovary, together with and under the influence of growth hormone, where they act as paracrine/autocrine regulators during follicular development (Ahumada-Solorzano et al 2016;Yoshimura et al 1994Yoshimura et al , 1996. In addition, different variants of IGF-1 genes, as well as variation in IGF-1 levels in poultry resulted mainly in variation in productivity; different numbers of eggs produced or variation in egg quality (Hocking et al 1994;Nagaraja et al 2000;Wu et al 2016).…”

Section: Livermentioning

confidence: 99%

“…IGF-1, predominantly synthesized by the liver, plays a clear regulatory role in growth and development, life span and various components of reproduction (Baker et al 1993;Daftary & Gore 2005;Dantzer & Swanson 2012;Hellström et al 2016;Holzenberger et al 2003;Liu et al 1993;Velazquez et al 2008). Though, recent studies in avian species have focused on growth and body condition (Lodjak et al 2014(Lodjak et al , 2017, evidence for a link between IGF-1 and reproduction in birds exist, but is restricted to poultry and mainly in relation to variation in productivity, such as the number of eggs and egg quality (Hocking et al 1994;Nagaraja et al 2000;Wu et al 2016). The ovary expresses IGF-1 receptors (Onagbesan et al 2009), but here IGF-1 might be mainly involved in steroidogenesis or differentiation and apoptosis in pre-hierarchical follicles, rather than rapid yolk development or VTG/VLDL receptor function (Onagbesan et al 2009;Woods et al 2007).…”

Section: Downstream Mechanisms… and Clocksmentioning

confidence: 99%

The mechanisms underlying seasonal timing of breeding : a multi-level approach using bi-directional genomic selection on timing of egg-laying

Verhagen¹

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Table of contents Chapter 1 General introduction Chapter 2 Genetic and phenotypic responses to genomic selection for timing of breeding in a wild songbird Chapter 3 Temperature has a causal and plastic effect on timing of breeding in a small songbird Chapter 4 Exploration of tissue-specific gene expression patterns underlying timing of breeding in contrasting temperature environments in a songbird Chapter 5 Fine-tuning of seasonal timing of breeding is regulated downstream in the underlying neuro-endocrine system in a small songbird Chapter 6 Exploring temporal changes in DNA methylation and RNA expression in a small songbird-correlations within and between tissues Chapter 7 General discussion References Summary Samenvatting Curriculum vitae List of publications Acknowledgements WIAS Training and Education Statement CHAPTER 1 General introduction Chapter 1 10 Evolution and natural selection Evolution, the process that leads to the formation of and change in biological systems in response to their environment, has shaped life since its beginning and continues to do so. All organisms, simple and complex, evolve over different scales in both time and space. In general, evolution is described and studied as two distinct hierarchical processes; macroevolution and micro-evolution. Macro-evolution refers to the origin of new morphological forms, species and divisions of the taxonomic hierarchy above the species level, together with the origin of complex adaptations, such as the eye (Reznick & Ricklefs 2009), but on which I will not dwell further. In contrast, micro-evolution refers to the processes of adaptive modifications (i.e. through alteration in allele frequencies in gene pools) within and among populations, propelled by mutation, migration, genetic drift and natural selection. The latter, put first into words by, independently, both Charles Darwin (1859) and Alfred Russel Wallace (1858), is usually defined as the consequence of three organismal properties: (1) variation among organisms of a population, (2) differential reproduction, and (3) traits that are important for survival or reproduction show heritability (Darwin 1859; Wallace 1858).

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Investigation of insulin-like growth factor-1 gene with egg-laying traits in the Muscovy duck (Cairina moschata)

Cited by 15 publications

References 62 publications

Prioritization of 10 organic flame retardants using an avian hepatocyte toxicogenomic assay

Prioritization of 10 organic flame retardants using an avian hepatocyte toxicogenomic assay

Fine-tuning of seasonal timing of breeding is regulated downstream in the underlying neuro-endocrine system in a small songbird

The mechanisms underlying seasonal timing of breeding : a multi-level approach using bi-directional genomic selection on timing of egg-laying

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