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Chi Liu
Department of Geriatrics, Jingan District Central Hospital, Shanghai 200040, China
Biography
Chi Liu received his Ph.D. in 2008 from Johns Hopkins University with emphasis on quantitative SPECT/CT imaging. Following his graduate work, he was a postdoctoral fellow at University of Washington, specializing in oncological PET/CT studies with emphasis on compensation algorithms for respiratory motion. In 2010, he joined Yale University as a faculty member. He is board certified in Nuclear Medicine physics and instrumentation by the American Board of Science in Nuclear Medicine. His current research focuses on quantitative cardiac and oncological PET/CT and SPECT/CT imaging, including deep learning algorithms, reconstruction algorithms, data correction, dynamic imaging, and translational imaging.
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Research
Molecular Mechanisms of Angiotensin-converting Enzyme Inhibitory Peptide LAP Activity on Apoptosis of Vascular Smooth Muscle
Author(s): Yi Shen, Hong Fang*, Abdurrahman Omer Cavdar and Chi Liu
We observe the expression levels of apoptotic cells, Bcl-2/Bax and caspase-9 on abdominal aorta of spontaneously hypertensive rats (SHRs) to investigate impact and mechanisms of angiotensin converting enzyme inhibitory peptide LAP in apoptosis of vascular smooth muscle cell. A total of 20 male SHRs were studied to detect apoptotic cells and the expression of apoptosis-related proteins (Bcl-2, Bax, caspase-9). The index of apoptotic cells in LAP group was significantly lower compared to the control group. The expression of Bcl-2 in the LAP group was significantly higher than the control group. However, the levels of Bax and caspase-9 expression in the LAP group were significantly lower compared to the control group. The apoptosis index was negatively correlated with Bcl-2 and positively correlated with Bax/caspase-9. Similarly, the inflammation markers in LAP group were significantly l.. View more»