ArticleToxicologic pathology2024
Exogenous Growth Hormone Exacerbates Post-Irradiation Atherosclerosis in Susceptible Epicardial Coronary Arteries.
Article in Toxicologic pathology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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7 authors.
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Abstract
Cardiac exposure to ionizing radiation can damage both the microvasculature and coronary arteries, as well as increase the long-term risk of heart disease, myocardial fibrosis, and conduction abnormalities. Therapeutic agents capable of promoting recovery from radiation injury to the heart are limited. Growth hormone is linked to improved cardiac function following injury. Here, we leveraged a cynomolgus macaque model to determine the long-term outcomes of recombinant human growth hormone (rhGH) therapy on the heart following low-dose ionizing radiation. Macaques were exposed to 2 Gy radiation, treated with rhGH for one month, and assessed after 2 years. Overall, plasma lipid profile, cardiac function, and coronary artery disease were similar between rhGH and placebo treated animals. However, a subgroup of rhGH-treated animals exhibited more extensive atherosclerotic plaques in the coronary arteries. Together, these findings indicate that transient human growth hormone therapy subsequent to a single low dose of ionizing radiation involving the heart does not result in long-term changes to plasma cholesterol but may promote exacerbated coronary artery disease in a subset of individuals.
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