Master of Science (MS)
Cardiovascular disease is the leading cause of mortality in all developed nations. Several independent studies have shown that cardiotrophin-1 (CT-1) serum levels are modulated in patients with various types of cardiovascular disease including ischemic heart disease, valvular heart disease, and accelerated arthrosclerosis. CT-1 is a member of the Interleukin-6 family, or gp130 family of cytokines. It is also known to induce cardiomyocyte hypertrophy in vitro and in vivo, and is a critical component for cardiomyocyte survival. CT-1 is a naturally occurring protein with a molecular mass of approximately 21.5 kD and a 200 amino acid long sequence, it was discovered in a cDNA screen of murine stem cells and was originally identified in cardiomyocytes. Since then, CT-1 expression has been reported in several other tissues including skeletal muscle, liver, ovary, kidney and lung. Interestingly, our studies reveal that CT-1 protein expression is significantly modulated in adipose tissue following high fat feeding in C57BL/6 mice. Of note, we did not observe regulation of CT-1 expression in white adipose tissue in human obesity and Type II Diabetes Mellitus (T2DM). We can readily detect CT-1 in the media of cultured adipocytes. This study suggests that CT-1 secretion from murine adipose tissue may be an important contributor to the levels of circulating CT-1. In summary, our studies demonstrate that CT-1 is an adipokine that is modulated in murine obesity and T2DM.
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Sarjeant, Kelesha Crystal, "The expression of cardiotrophin-1 is differentially regulated in murine and human obesity type II diabetes" (2011). LSU Master's Theses. 573.
Stephens, Jacqueline M.