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- W2068366232 abstract "Chemokines may directly participate in the pathogenesis of neonatal chronic hypoxia–induced pulmonary hypertension (PH). Although stromal-derived factor-1 (SDF-1) has been shown to be involved in PH, the role of its most recently discovered receptor, chemokine receptor type 7 (CXCR7), remains unclear. We sought to determine whether antagonism of the CXCR7 receptor would decrease pulmonary vascular remodeling in newborn mice exposed to chronic hypoxia by decreasing pulmonary vascular cell proliferation. Neonatal mice were exposed to hypoxia (fractional inspired oxygen concentration = 0.12) or room air (RA) for 2 wk. After 1 wk of exposure, mice received daily injections of placebo or a CXCR7 antagonist (CCX771) from postnatal day 7 (P7) to P14. Right ventricular systolic pressure (RVSP), the ratio of the weight of the right ventricle to left ventricle + septum (RV/LV + S), and pulmonary vascular cell proliferation and remodeling were determined at P14. As compared with mice exposed to RA, hypoxia placebo mice had a significant increase in the lung protein expression of CXCR7. Although hypoxic placebo-treated mice had a significant increase in RVSP, RV/LV+S, and pulmonary vascular cell proliferation and remodeling, the administration of CCX771 markedly decreased these changes. These results indicate that antagonism of CXCR7 may be a potent strategy to decrease PH and vascular remodeling." @default.
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- W2068366232 date "2012-02-15" @default.
- W2068366232 modified "2023-10-17" @default.
- W2068366232 title "Antagonism of CXCR7 attenuates chronic hypoxia–induced pulmonary hypertension" @default.
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- W2068366232 doi "https://doi.org/10.1038/pr.2012.30" @default.
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