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Gene expression profiles from nandrolone-treated rats with denervation

ABSTRACT: We showed that nandrolone attenuated subacute, but not acute, denervation atrophy and upregulation of MAFbx. The present study explored the molecular determinants for this time-dependent effect using microarray analysis to identify genes that were differentially regulated by administration of nandrolone for 7 days beginning either concomitantly with denervation (7 days) or 29 days later (35 days)

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE17959 | GEO | 2009/09/04

SECONDARY ACCESSION(S): PRJNA119923

REPOSITORIES: GEO

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Transcription profiling of rats treated with nandrolone with denervation

Project description:We showed that nandrolone attenuated subacute, but not acute, denervation atrophy and upregulation of MAFbx. The present study explored the molecular determinants for this time-dependent effect using microarray analysis to identify genes that were differentially regulated by administration of nandrolone for 7 days beginning either concomitantly with denervation (7 days) or 29 days later (35 days) Experiment Overall Design: The analysis used gastrocnemius muscle from male Wistar-Hannover rats that had undergone left sciatic nerve transaction followed by the administration of nandrolone or vehicle beginning either on the day of surgery or 29 days thereafter. Animals had been sacrificed 7 days after starting nandrolone (Nan) or vehicle (Veh) (e.g, at days 7 or 35).

2009-09-11 | E-GEOD-17959 | biostudies-arrayexpress

Effect of denervation on mouse skeletal muscle mRNA levels.

Project description:Muscle denervation causes skeletal muscle atrophy. The goal of these studies was to determine the effects of denervation on skeletal muscle mRNA levels in C57BL/6 mice. For additional details see Ebert et al, Stress-Induced Skeletal Muscle Gadd45a Expression Reprograms Myonuclei and Causes Muscle Atrophy. JBC epub. June 12, 2012. Left sciatic nerves of C57BL/6 mice were transected. Seven days later bilateral tibialis anterior muscles were harvested. mRNA levels in denervated muscles were normalized to levels in contralateral innervated muscles.

2012-09-15 | E-GEOD-39195 | biostudies-arrayexpress

Genome-wide analysis of denervation induced gene expression in mouse triceps surae muscle

Project description:Analysis of denervation induced regulation of muscle mass at gene expression level. The hypothesis tested in the present study was that the presence of MuRF1 contributes to the extent of gene expression changes observed in specific sets of genes during a challenge leading to muscle atrophy. Results provide important information on the response of triceps surae muscle to sciatic nerve resection (denervation), such as specific structural, metabolic, and neuromuscular junction associated genes, that may be influenced by MuRF1 during atrophy. Total RNA obtained from isolated triceps surae muscle subjected to 3 or 14 days post-denervation compared to nonsurgically treated littermate control muscles.

2013-02-12 | E-GEOD-44205 | biostudies-arrayexpress

Microarray analysis of mouse skeletal muscle atrophied by denervation.

Project description:Muscle atrophy is associated with aging (sarcopenia) and chronic unloading (such as bed confinement and immobilization with casts), as well as various pathological conditions such as type 1 diabetes and nerve injury (denervation). C57BL/6 mice (7 weeks old, male) were denervated. After 14 days, skeletal muscle was collected and RNA extracted. Expression of Dnmt3a was reduced while expression of Gdf5 was increased by denervation.

2019-04-01 | GSE97313 | GEO

microRNA data from atrophied rat gastrocnemius of 5 days post denervation versus sham control

Project description:microRNAs responsible for skeletal muscle atrophy are largely unclear. We used microarrays to examine microRNA profiles in rat gastrocnemius muscle of 5 days after denervation of sciatic nerve versus sham control.

2017-08-11 | GSE81914 | GEO

Effect of denervation on mouse skeletal muscle mRNA levels.

2012-09-15 | GSE39195 | GEO

Murine fast-twitch muscle: two-week progression of denervation atrophy

Project description:The right legs of 3 months old CD1 mice were denervated by unilaterally cutting the sciatic nerve at the level of trochanter, resulting in a permanent denervation of the lower hindleg. At the indicated times, animals were killed by cervical dislocation and tibialis anterior (TA) muscles were dissected out and frozen in liquid nitrogen. The expression analysis was carried out at five time points, namely just after denervation (time 0) and 1, 3, 7 and 14 days after nerve interruption. The contralateral, left TA muscle from the same individual served as innervated control. We reversed labeling of denervated and contralateral samples in each experiment, thus carrying out two separate hybridizations for each time point. Keywords = mouse Keywords = fast-twitch muscle Keywords = denervation Keywords = atrophy Keywords: time-course

2005-09-21 | GSE1893 | GEO

m6A MeRIP-seq of skeletal muscle during innervation and denervation

Project description:To assess the m6A methylome during denervation-induced muscle atrophy, the methylated RNA immunoprecipitation sequencing (MeRIP-seq) was performed.

2021-09-26 | GSE179178 | GEO

Dietary Genistein Prevents Denervation-Induced Muscle Atrophy in Male Rodents via Effects on Estrogen Receptor-α.

Project description:Genistein is one of the flabonoids which is included in high concentration in soy and has a high estrogenic activity. Beneficial effects of estrogen or hormone replacement therapy (HRT) on muscle mass or muscle atrophy have been demonstrated. We investigated the preventive effects and underlying mechanisms of genistein intake on denervation-induced muscle atrophy. Genistein intake significantly suppressed the loss of soleus muscle weight and the denervation-induced up-regulations of FOXO1 protein. The results of a DNA microarray showed that the estrogen receptor (ER) target genes are changed by genistein intake. Genistein suppressed the soleus muscle atrophy, and it was attenuated under the ER antagonist treatment. The administration of an ERα agonist suppressed the denervation-induced muscle atrophy and up-regulation of Atrogin1 gene expression, but the ERβ agonist had no effect.

2016-01-23 | GSE77121 | GEO

NLRP3 inflammasome activation aggravates skeletal muscle atrophy in experimental model of denervation

Project description:The innervation of skeletal myofibers exerts a crucial influence on the maintenance of muscle tone and normal operation, but little is known concerning atrophy and its underlying mechanisms in denervated muscle to date. Here, we reported that activated NOD-like receptor protein 3 (NLRP3) inflammasome with pyroptotic cell death occurred in denervated gastrocnemius in the mouse model of sciatic denervation. This damage causes interleukin 1 beta (IL-1β) release，facilitating the ubiquitin proteasome system (UPS) activation, which was responsible for muscle proteolysis. Conversely, genetic knock-out of muscular NLRP3 inhibited the pyroptosis-associated protein expression and ameliorate muscle atrophy significantly. Meanwhile, co-treatment with shRNA-NLRP3, also remarkably attenuated NLRP3 inflammasome activator (NIA)-induced C2C12 myotube pyroptosis and atrophy. Interestingly, we also observed a correlation between NLRP3 inflammasome activation and muscular apoptosis possibly via caspase 1 mediation after denervation. This work for the first time elucidates on the roles and mechanisms of NLRP3 inflammasome in skeletal muscle atrophy during denervation and suggests the potential contribution to the pathogenesis of neuromuscular diseases.

2022-12-29 | GSE201133 | GEO

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