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Expression analysis of genes in Rattus norvegicus lungs at postnatal day 4, 10 and 21 after intrauterine growth restriction induced by low protein diet

ABSTRACT: We performed RNA microarray in a low protein diet (LPD) model of IUGR at three key time points of alveolarization process. IUGR and control rat pups had been studied for each time point considered: on postnatal day 4 (P4) before beginning of the alveolarization process, on P10, peak of alveolarization process and on P21 at the end of it.

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE56956 | GEO | 2014/10/29

SECONDARY ACCESSION(S): PRJNA245070

REPOSITORIES: GEO

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Expression analysis of genes in Rattus norvegicus lungs at postnatal day 4, 10 and 21 after intrauterine growth restriction induced by low protein diet

Project description:We performed RNA microarray in a low protein diet (LPD) model of IUGR at three key time points of alveolarization process. IUGR and control rat pups had been studied for each time point considered: on postnatal day 4 (P4) before beginning of the alveolarization process, on P10, peak of alveolarization process and on P21 at the end of it. A twelve chip study using total RNA extracted from 14 whole lungs intrauterine growth restricted rat pups compared to 15 controls. RNA was extracted at three key time points of alveolarization in postnatal life. RNA was pooled by groups of 2 ou 3 before analysis.

2014-10-29 | E-GEOD-56956 | biostudies-arrayexpress

microRNA expression profile in whole lung of rat pups at P10 or P21 day of life after a intrauterine growth restriction due to a low protein diet during gestation

Project description:The aim of this study was to evaluate whether microRNA profiles during alveolarization are affected by an intrauterine growth restriction after a low protein diet during gestation. MicroRNA expression were assessed in the lungs of five animals per group at P10 and P21 after birth in a rat model of low protein diet-induced IUGR.

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Impact of fetal growth restriction on neonatal microglia proteome in rat.

Project description:Microglia activation is a key modulator of brain vulnerability in response to intra-uterine growth restriction (IUGR). However, the consequences of IUGR on microglia development and on microglia proteome are still unknown. We used a model of IUGR induced by a gestational low-protein diet (LPD) in rat. Microglia were isolated from control and LPD animals at P1 and P4. The aim of this work was characterize the consequence of IUGR on microglia development and investigate the consequences of IUGR exposure on microglia proteome during the first postnatal days using a bioinformatics approach associated with functional assays.

2021-12-17 | PXD028950 | Pride

Altered molecular signatures during kidney development after intrauterine growth restriction of different origins

Project description:Intrauterine growth restriction (IUGR) has been linked to predisposition towards an unfavorable course of glomerulopathies and early loss of kidney function. This study was performed to identify transcriptional alterations in male IUGR rats during and at the end of nephrogenesis in order to generate hypotheses which molecular mechanisms contribute to adverse kidney programming. IUGR was induced by low protein (LP) diet throughout pregnancy, bilateral uterine vessel ligation (LIG), or intrauterine stress (IUS) by sham operation. Offspring of unimpaired dams served as controls. Significant acute kidney damage was ruled out by negative results for proteins indicative of ER-stress, autophagy, apoptosis or infiltration with macrophages. Renal gene expression was examined by transcriptome microarrays, demonstrating 53 (LP, n=12; LIG, n=32; IUS, n=9) and 134 (LP, n=10; LIG, n=41; IUS, n=83) differentially expressed transcripts on postnatal days (PND) 1 and 7, respectively. Reduced Pilra (all IUGR groups, PND 7), Nupr1 (LP and LIG, PND 7) and Kap (LIG, PND 1) as well as increased Ccl20, S100a8/a9 (LIG, PND 1), Ifna4 and Ltb4r2 (IUS, PND 7) indicated that inflammation-related molecular dysregulation could be a “common” feature after IUGR of different origins. Network analyses of transcripts and predicted upstream regulators hinted at proinflammatory adaptions mainly in LIG (arachidonic acid-binding, neutrophil aggregation, toll-like-receptor, NF-kappa B and TNF signaling) and dysregulation of AMPK and PPAR signaling in LP pups. The latter may increase susceptibility towards obesity-associated kidney damage. Western blots of the most prominent predicted upstream regulators confirmed significant dysregulation of RICTOR in LP (PND 7) and LIG pups (PND 1), suggesting that mTOR-related processes could further modulate kidney programming in these groups of IUGR pups.

2017-12-09 | GSE107847 | GEO

Transcriptome analyses reveal metabolic syndrome of adulthood with intrauterine growth restriction in a pig model

Project description:Epidemiological data indicated intrauterine growth retardation (IUGR) is a risk factors for adult metabolic syndrome. However, the genetic mechanism underlying the phenotype in adulthood is not well characterized. Here, the present study employed adult normal and IUGR pigs as models to survey the difference of global gene expression in the liver using transcriptome sequence. The trancriptome libraries generated 104.54 gigabases data, 16,948 and 17,078 genes were expressed in normal and IUGR pigs, repectively. A total of 1,322 differentially expreesion genes (DGEs) were identified. An enrichment analysis of DGEs presented the top overrepresented GO terms and pathway were related to oxidoreductase activity, ATPase activity, amino catabolic process, glucose metabolism and Insulin signaling pathway. Finally, combined their phenotypes and gene expression patterns, we proved the adult IUGR pigs would obstruct the process of mitochondrial biogenesis and oxidative phosphorylation, which induced high oxidation press in adult IUGR. The increased gluconeogenic and decreased glycogen synthesis in liver resulted in reducing the capacity of glucose intolerance in IUGR. The decreased expression of insulin signaling genes (such as PI3K and AKT) implied a risk of diabetes in adult IUGR. Moreover, the capacity of fatty acid oxidation decreased in IUGR liver leaded to high content of triglyceride and free fatty acid in IUGR. Together, these findings provide a comprehensive understanding of the molecular mechanisms of adult IUGR pigs and valuable information for future studies of therapeutic intervention in IUGR metabolic syndrome.

2017-11-04 | GSE106512 | GEO

Rattus norvegicus

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Patterns of Gastrointestinal Helminth Infections in Rattus rattus, Rattus norvegicus, and Mus musculus in Chile

Project description:Few studies have assessed the patterns of parasite populations of rodents over a longitudinal gradient in Chile. In this work, the gastrointestinal helminthic fauna of invasive rodents in Chile was examined to assess the association between their presence/absence and abundance with latitude, host sex, and host body condition, and to assess the coexistence and correlation of the abundance between parasite species. Rodents were obtained from 20 localities between 33 and 43°S. Helminths were extracted from the gastrointestinal tract and identified morphologically. Overall, 13 helminth taxa were obtained. The most frequently identified parasite species was Heterakis spumosa, and the most abundant was Syphacia muris, while Physaloptera sp. was the most widely distributed. No locality presented with a coexistence that was different from that expected by chance, while the abundance of five helminthic species correlated with the abundance of another in at least one locality, most likely due to co-infection rather than interaction. Host sex was associated with parasite presence or abundance, and female sex-biased parasitism was notably observed in all cases. Body condition and latitude presented either a positive or negative association with the presence or abundance of parasites depending on the species. It is notable that the likely native Physaloptera sp. is widely distributed among invasive rodents. Further, gravid females were found, suggesting spillback of this species to the native fauna. The low frequency and abundance of highly zoonotic hymenolepid species suggest that rodents are of low concern regarding gastrointestinal zoonotic helminths.

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Rattus norvegicus

Project description:microRNA expression profile in whole lung of rat pups at P10 or P21 day of life after a intrauterine growth restriction due to a low protein diet during gestation

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Rattus norvegicus

Project description:Effect of IUGR on postnatal day 14 pancreatic islets

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The social life of Norway rats (Rattus norvegicus).

Project description:The Norway rat has important impacts on our life. They are amongst the most used research subjects, resulting in ground-breaking advances. At the same time, wild rats live in close association with us, leading to various adverse interactions. In face of this relevance, it is surprising how little is known about their natural behaviour. While recent laboratory studies revealed their complex social skills, little is known about their social behaviour in the wild. An integration of these different scientific approaches is crucial to understand their social life, which will enable us to design more valid research paradigms, develop more effective management strategies, and to provide better welfare standards. Hence, I first summarise the literature on their natural social behaviour. Second, I provide an overview of recent developments concerning their social cognition. Third, I illustrate why an integration of these areas would be beneficial to optimise our interactions with them.

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