Project description:Analysis of effect of hindlimb suspension and reloading on C57Bl/6 mouse soleus muscle. Experimental groups examined: -Control mice, 14 days -Hindlimb suspension for 7 days -Hindlimb suspension for 7 days, and subsequent reloading for 1 day -Hindlimb suspension for 7 days, and subsequent reloading for 7 days Keywords: other
Project description:Analysis of effect of hindlimb suspension and reloading on C57Bl/6 mouse soleus muscle. Experimental groups examined: -Control mice, 14 days -Hindlimb suspension for 7 days -Hindlimb suspension for 7 days, and subsequent reloading for 1 day -Hindlimb suspension for 7 days, and subsequent reloading for 7 days
Project description:Examination of effect of mechanical loading induced by hindlimb suspension, and subsequent reloading, in soleus muscle in 14 day old female pathogen–free Wistar rats. Keywords = skeletal muscle Keywords = atrophy Keywords: other
Project description:Examination of effect of mechanical loading induced by hindlimb suspension, and subsequent reloading, in soleus muscle in 14 day old female pathogenâfree Wistar rats. Keywords = skeletal muscle Keywords = atrophy
Project description:Spaceflight results in a number of adaptations to skeletal muscle, including atrophy and shifts towards faster muscle fiber types. To identify changes in gene expression that may underlie these adaptations, microarray expression analysis was performed on gastrocnemius from mice flown on the STS-108 shuttle flight (11 days, 19 hours) versus mice maintained on earth for the same period. Additionally, to identify changes that were due to unloading and reloading, microarray analyses were conducted on calf muscle from ground-based mice subjected to hindlimb suspension (12 days) and mice subjected to hindlimb suspension plus a brief period of reloading (3.5 hours) to simulate the time between landing and sacrifice of the spaceflight mice.
Project description:1 year-old male 129/SV mice. Animals were acclimatized to housing in single cages for one week followed by 7 days of hindlimb suspension and one day of reloading. Soleus muscle was harvested, total RNA isolated and subjected to transcript profiling with custom microarrays with custom-designed ATLASTM cDNA nylon filter as described (Dapp, C., Schmutz, S., Hoppeler, H. & Fluck, M. (2004) Physiol Genomics 20, 97-107). Keywords: transcriptome
Project description:1 year-old male 129/SV mice. Animals were acclimatized to housing in single cages for one week followed by 7 days of hindlimb suspension and one day of reloading. Soleus muscle was harvested, total RNA isolated and subjected to transcript profiling with custom microarrays with custom-designed ATLASTM cDNA nylon filter as described (Dapp, C., Schmutz, S., Hoppeler, H. & Fluck, M. (2004) Physiol Genomics 20, 97-107). Keywords: transcriptome Six biological replicas
Project description:Skeletal muscle is a highly adaptive tissue that changes with many physiological stimuli and is composed of many cell types. Upon muscle injury, the concerted action of these cells is required to proceed through the process of inflammation, extracellular matrix remodeling, and restoration of function. To uncover novel genes and molecular pathways important for skeletal muscle remodeling and regeneration, we used a mouse hindlimb unloading and reloading protocol, and performed transcriptomics analysis. This study focuses on the microprotein Mustn1 (Musculoskeletal embryonic nuclear protein 1, also known as Mustang), whose gene expression is increased in muscle at the onset of hindlimb reloading, exercise, and injury. We generated a whole-body Mustn1 knockout mouse model and performed proteomics analysis of muscle and aorta.