Abstract

The purpose of this study is to test the hypothesis that muscle neovascularization provides sufficient perfusion for viability. Four rat gastrocnemius muscles (2 cm lon, 1 cm wide, and 0l4 cm thick) will include control, delay, transposition and acute ligation. The control muscle will have no surgery. On day 1, other muscles will be isolated on a vascular pedicle and rotated. On day 7, the delay muscle will have the pedicle ligated. On day 14, the acute ligation muscle will have the pedicle ligated. Saline with gadolinium-labeled albumin will be infused into the hindlimb, followed by glutaraldehyde. The muscle will then be fixed for two more hours and imaged. Five random fields from the distal muscle and five from the proximal muscle will have vascular length density measured. We will use the preliminary data to submit grant proposals to NIH and other agencies for further funding. Factors which modulate vascular remodeling will be the topics of future studies.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
5P41RR005959-12
Application #
6493758
Study Section
Project Start
2001-09-01
Project End
2002-08-31
Budget Start
Budget End
Support Year
12
Fiscal Year
2001
Total Cost
$288,015
Indirect Cost

  Institution

Name
Duke University
Department
Type
DUNS #
071723621
City
Durham
State
NC
Country
United States
Zip Code
27705

  Publications

Tang, Xinyan; Jing, Liufang; Richardson, William J et al. (2016) Identifying molecular phenotype of nucleus pulposus cells in human intervertebral disc with aging and degeneration. J Orthop Res 34:1316-26
Hodgkinson, Conrad P; Bareja, Akshay; Gomez, José A et al. (2016) Emerging Concepts in Paracrine Mechanisms in Regenerative Cardiovascular Medicine and Biology. Circ Res 118:95-107
Schmeckpeper, Jeffrey; Verma, Amanda; Yin, Lucy et al. (2015) Inhibition of Wnt6 by Sfrp2 regulates adult cardiac progenitor cell differentiation by differential modulation of Wnt pathways. J Mol Cell Cardiol 85:215-25
Roos, Justus E; McAdams, Holman P; Kaushik, S Sivaram et al. (2015) Hyperpolarized Gas MR Imaging: Technique and Applications. Magn Reson Imaging Clin N Am 23:217-29
He, Mu; Robertson, Scott H; Kaushik, S Sivaram et al. (2015) Dose and pulse sequence considerations for hyperpolarized (129)Xe ventilation MRI. Magn Reson Imaging 33:877-85
Huang, Lingling; Walter, Vonn; Hayes, D Neil et al. (2014) Hedgehog-GLI signaling inhibition suppresses tumor growth in squamous lung cancer. Clin Cancer Res 20:1566-75
Huang, Jing; Guo, Jian; Beigi, Farideh et al. (2014) HASF is a stem cell paracrine factor that activates PKC epsilon mediated cytoprotection. J Mol Cell Cardiol 66:157-64
Yuan, Ying; Gilmore, John H; Geng, Xiujuan et al. (2014) FMEM: functional mixed effects modeling for the analysis of longitudinal white matter Tract data. Neuroimage 84:753-64
He, Mu; Kaushik, S Sivaram; Robertson, Scott H et al. (2014) Extending semiautomatic ventilation defect analysis for hyperpolarized (129)Xe ventilation MRI. Acad Radiol 21:1530-41
van Rhoon, Gerard C; Samaras, Theodoros; Yarmolenko, Pavel S et al. (2013) CEM43°C thermal dose thresholds: a potential guide for magnetic resonance radiofrequency exposure levels? Eur Radiol 23:2215-27

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