Summary of Study ST002356
This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench, https://www.metabolomicsworkbench.org, where it has been assigned Project ID PR001513. The data can be accessed directly via it's Project DOI: 10.21228/M8471X This work is supported by NIH grant, U2C- DK119886.
See: https://www.metabolomicsworkbench.org/about/howtocite.php
| Study ID | ST002356 |
| Study Title | Isolated murine skeletal muscles utilize pyruvate over glucose for oxidation-Part 1 |
| Study Type | Study of the different substrate by isolated skeletal muscle at room temperature via C-13 isotopomer analysis |
| Study Summary | Preclinical studies of muscle contractile function often employ ex vivo preparations of the soleus and/or extensor digitorum longus (EDL) muscles which are relatively easy to prepare and represent slow and fast fiber properties, respectively. Therefore, the current study sought to examine the utility of this preparation for understanding the metabolic fuel utilization in isolated resting mouse muscles at room temperature. 13C-labeling in both muscle types was performed using three fuels: glucose, pyruvate, and acetate, followed by NMR-based metabolomics analyses. Incubating 13C-labeled substrates in the isolated skeletal muscles makes it possible to examine TCA cycle flux and substrate selection by these muscles. |
| Institute | University of Florida |
| Department | Applied Physiology and Kinesiology |
| Laboratory | Rm 42 and Rm 43 |
| Last Name | Khattri |
| First Name | Ram |
| Address | 1864 Stadium RD, Gainesville, FL, 32611, USA |
| rbk11@ufl.edu | |
| Phone | 3307856045 |
| Submit Date | 2022-10-31 |
| Num Groups | 4 |
| Total Subjects | 18 |
| Study Comments | Southeastern Center for Integrated Metabolomics (SECIM) (ERB), NIH AR U54 AR052646 (Physiological Assessment Core, ERB), and Wellstone Muscular Dystrophy Cooperative Research Center Grant (NIAMS: U54AR052646/P50 AR052646). The AMRIS Facility is supported by the National Science Foundation Cooperative Agreement No. DMR-1644779 and the State of Florida. |
| Raw Data Available | Yes |
| Raw Data File Type(s) | fid |
| Analysis Type Detail | NMR |
| Release Date | 2023-05-01 |
| Release Version | 1 |
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Collection:
| Collection ID: | CO002438 |
| Collection Summary: | Mice were anesthetized (using a combination of xylazine (80mg/kg) and ketamine (10mg/kg)) to allow removal of soleus and extensor digitorum longus (EDL) muscles. Upon removal, muscles were incubated at 22 oC in Ringer/MEM solution gas equilibrated with 95/5% O2/CO2 with appropriate 13C labeled substrates in a perfusion chamber routinely used for isolated muscle mechanics for 30 minutes. These included the following: 5.5 mM [U-13C6] glucose; 5.5 mM [U-13C3] pyruvate, or 16.5 mM [13C2] labeled Na-acetate. Following incubation, muscles were quickly removed, blotted, and then rapidly frozen in liquid nitrogen for subsequent NMR analysis. |
| Collection Protocol Comments: | Mice were anesthetized (using a combination of xylazine (80mg/kg) and ketamine (10mg/kg)) to allow removal of soleus and extensor digitorum longus (EDL) muscles. Upon removal, muscles were incubated at 22 oC in Ringer/MEM solution gas equilibrated with 95/5% O2/CO2 with appropriate 13C labeled substrates in a perfusion chamber routinely used for isolated muscle mechanics for 30 minutes. These included the following: 5.5 mM [U-13C6] glucose; 5.5 mM [U-13C3] pyruvate, or 16.5 mM [13C2] labeled Na-acetate. Following incubation, muscles were quickly removed, blotted, and then rapidly frozen in liquid nitrogen for subsequent NMR analysis. N=4 muscles were pooled into a single biological replicate of 30-50 mg tissue to afford detectable levels of substrates in the NMR analysis. |
| Sample Type: | Muscle |
| Collection Method: | Mice were anesthetized (using a combination of xylazine (80mg/kg) and ketamine (10mg/kg)) to allow removal of soleus and extensor digitorum longus (EDL) muscles. |
| Collection Location: | University of Florida, Applied Physiology and Kinesiology, MBI, 1149 Newell Dr, Gainesville, FL 32610 |
| Storage Conditions: | -80℃ |
| Collection Vials: | cryovials |
| Storage Vials: | cryovials |
