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Expression data from 18-month old rats

ABSTRACT: Expression data from 18-month old rats

PROVIDER: PRJNA592911 | ENA |

REPOSITORIES: ENA

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Expression data from 18-month old rats

Project description:Multiple mechanisms and pathophysiological changes after anesthesia, such as brain aging and neurodegenerative diseases. And the gene transcription patterns and modulation networks after general anesthesia remains to be elucidated. We used microarrays to detail the global programme of gene expression in rats after sevoflurane anesthesia and identified distinct classes of changed.

2019-12-03 | GSE141242 | GEO

Expression data from hippocampus and cortex of 6- and 12-week curcumin-treated 15-month-old rats

Project description:Curcumin has been demonstrated to have many neuroprotective properties, including improvement of cognition in humans and neurogenesis in animals, yet the mechanism of such effects remains unclear. Here, we assessed behavioural performance and hippocampal cell proliferation in aged rats after 6- and 12-week curcumin-fortified diets. Curcumin enhanced non-spatial and spatial memory, as well as dentate gyrate cell proliferation as compared to control diet rats. We also investigated underlying mechanistic pathways that might link curcumin treatment to increased cognition and neurogenesis via microarray analysis of cortical and hippocampal mRNA transcription. We used microarrays to investigate the effects of short-term (6-week) and long-term (12-week) curcumin-supplemented diet on gene expression of hippocampus and cortex in aged rats. The hippocampus and cortex of every three rats from one group were pooled together, respectively and used for RNA extraction and hybridization on Affymetrix microarrays. To ensure the reliability of the data, we conducted hybridization experiments in duplicate microarrays from each RNA sample. The tissues examined by microarray are as follows: the hippocampus and cortex of 6-week curcumin-treated 15-month-old rats, the hippocampus and cortex of 6-week no curcumin-treated 15-month-old rats (control rats), the hippocampus and cortex of 12-week curcumin-treated 15-month-old rats, the hippocampus and cortex of 12-week no curcumin-treated 15-month-old rats (control rats).

2011-10-21 | E-GEOD-33137 | biostudies-arrayexpress

Spatial transcriptomics of 3-month-old and 18-month-old mouse ovarian and uterine tissues

Project description:We used Visium technology (10X Genomics) to infer cell-to-cell communication in ovarian and uterine tissue based on spatial proximity. Organs from 3-month mice in diestrus and 18-month old mice were collected and frozen in OCT. 10 µm thick tissue slices were placed on Visium Spatial Gene Expression Slides (10X Genomics) and stained with Hematoxylin and Eosin (H&E). Libraries were prepared by manufacturer’s recommendations and sequenced on NovaSeq6000. For samples that were sequenced in two runs, both sequencing runs were merged when running spaceranger (10X Genomics). Original nd2 microscopy images and results of scRNA-seq (linked datasets) and spatial transcriptomics analysis are available at Biostudies (S-BIAD482 and S-BSST852).

2024-01-30 | E-MTAB-12105 | biostudies-arrayexpress

Dnmt1 deletion in PV-positive cortical interneurons of 6 month and 18 month old mice

Project description:Dnmt1 deletion in PV-positive cortical interneurons of 6 month and 18 month old mice

| PRJNA605736 | ENA

Gene expression data from 16-month and 3-month old male rats, with three different levels of activity over the life span: sedentary, twice weekly physical activity, regular running wheel exercise.

2013-10-18 | GSE51380 | GEO

Striatal gene expression data from 3- and 18-month-old Q92 mice and control mice.

Project description:Achieving a mechanistic understanding of disease and initiating preclinical therapeutic trials necessitate the study of huntingtin toxicity and its remedy in model systems. To allow the engagement of appropriate experimental paradigms, Huntington’s disease (HD) models need to be validated in terms of how they recapitulate a particular aspect of human disease. In order to examine transcriptome-related effects of mutant huntingtin, we compared striatal mRNA profiles from seven genetic mouse models of disease to that of postmortem human HD caudate using microarray analysis. Transgenic models expressing short N-terminal fragments of mutant huntingtin (R6/1 and R6/2 mice) exhibited the most rapid effects on gene expression, consistent with previous studies. Although changes in the brains of knock-in models of HD took longer to appear, 15-month and 22-month CHL2Q150/Q150, 18-month HdhQ92/Q92 and 2-year-old YAC128 animals also exhibited significant HD-like mRNA signatures. When the affected genes were compared across models, a robust concordance was observed. Importantly, changes concordant across multiple lines mice were also in excellent agreement with the mRNA changes seen in human HD caudate. Although it was expected that the expression of full-length huntingtin transprotein might result in unique gene expression changes compared to those caused by expression of an N-terminal huntingtin fragment, no discernable differences between full-length and fragment models were detected. There was, however, an overall concordance between transcriptomic signature and disease stage. We thus conclude that the transcriptional changes of HD can be modelled in several available lines of transgenic mice, comprising lines expressing both N-terminal and full-length mutant huntingtin proteins. The combined analysis of mouse and human HD transcriptomes provides an important chronology of mutant huntingtin's gene expression effects. Keywords: genetic modification

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Gene expression data from 16-month and 3-month old male rats, with three different levels of activity over the life span: sedentary, twice weekly physical activity, regular running wheel exercise.

Project description:Gene expression data at rest and immediately post 30 min submaximal exercise in 3 month and 16 month old male rats, some of which were sedentary (SED), had access to a physical activity box twice weekly (PA) and some of which had daily access to a running wheel (EX). We used microarrays to detail global gene expression underlying select health-related phenotypes and identified differentially expressed genes among the three groups. Young (3 month) and old (16 month) male rats were separated into three different groups: Sedentary (SED), twice-weekly physical activity (PA), and regular exercise (EX). Animals were sacrificed either at rest or after 30 min of sub maximal exercise. Then, a portion of cardiac tissue was collected for RNA extraction and hybridization on Affymetrix microarrays.

2013-10-18 | E-GEOD-51380 | biostudies-arrayexpress

Dnmt1 deletion in PV-positive cortical interneurons of 6 month and 18 month old mice [RNA-seq]

Project description:Dnmt1 deletion in PV-positive cortical interneurons of 6 month and 18 month old mice [RNA-seq]

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Dnmt1 deletion in PV-positive cortical interneurons of 6 month and 18 month old mice [meDIP-seq]

Project description:Dnmt1 deletion in PV-positive cortical interneurons of 6 month and 18 month old mice [meDIP-seq]

| PRJNA605744 | ENA

Comparison of gene expression in seminiferous tubules of 3 month old calf versus 9 month old calf using RNA-Seq

Project description:We sequenced RNA from seminiferous tubules of 3 month old calf versus 9 month old calf

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