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LncRNA data in gastrocnemius muscles from mice that have undergone denervation of the right sciatic nerve or not

ABSTRACT: LncRNA data in gastrocnemius muscles from mice that have undergone denervation of the right sciatic nerve or not

PROVIDER: PRJNA635416 | ENA |

REPOSITORIES: ENA

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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.

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High-throughput sequencing data of circRNAs in the gastrocnemius muscle of mice with or without right sciatic nerve denervation

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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).

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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

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Entrapment Neuropathy Results in Different MicroRNAs Expression Patterns from Denervation Injury in Rats

Project description:To compare the microRNAs (miRNAs) expression profile in the innervated soleus muscle and L4-L6 DRG neuronsafter sciatic nerve entrapment with a non-constrictive silastic tube, subsequent surgical decompression, and denervation injury. The experimental soleus muscles and dorsal root ganglions (DRGs) from each experimental group (sham control, denervation, entrapment, and decompression) were analyzed with an Agilent® rat miRNA array to detect dysregulated miRNAs Three-condition experiment, DRGs and soleus muscles of the rats receiving sciatic nerve denervation 6 months, sciatic nerve entrapment 6 months, and sciatic nerve entrapment 6 months then decompression for 3 months v.s. soleus muscle (sham control), Biological replicates: 1 control replicates, 3 experiment replicates

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Expression data from gastrocnemius muscle of denervated mice ingesting maslinic acid

Project description:Gene expression profiling of the effect of maslinic acid in denervated mice ICR mice were fed either the diet containing 0.27% maslinic acid and the control diet. After 7 days, the sciatic nerve of both legs was cut and a 5-mm piece was excised under anesthesia. Microarray gene expression profiling was conducted for biological replicates of gastrocnemius muscle after 14 days from denervation surgery.

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LncRNA data in gastrocnemius muscles from mice that have undergone denervation of the right sciatic nerve or not

Project description:This study was to identify lncRNAs responsible for muscle atrophy Muscle atrophy commonly occurs in aging, disuse, starvation, and many chronic diseases including heart failure and cancer. Muscle atrophy leads to muscular weakness and reduced quality of life, which also significantly increases morbidity and mortality. While progress has been made in understanding the molecular underpinnings of muscle atrophy, currently there are no effective approved drugs to combat muscle atrophy. Thus, novel therapies for muscle atrophy would address an important unmet clinical need. Long non-coding RNAs (LncRNAs) are transcribed RNAs longer than 200 nucleotides with little or no protein-coding capacity. Several lncRNAs have been reported in myogenesis and few lncRNAs have been mechanistically linked to skeletal muscle diseases. Here we want to identify a lncRNA as a common regulator of multitypes of muscle atrophy.

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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.

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Innervated and 2 month Denervated Rat EDL muscles

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