Abstract
Pulmonary arterial hypertension (PAH) comprises a multifactorial group of pulmonary vascular disorders that frequently lead to right heart failure and premature death. Histologically, patients with severe PAH have combinations of small pulmonary arterial medial and adventitial thickening, occlusive neointima, and complex plexiform lesions. Despite recent advances in treatments targeting those remodeled pulmonary arteries, the mortality in severe PAH is still high. To explore the novel treatment for severe PAH, better understandings of the pathogenesis of these lesions are needed. Numerous studies to investigate the pathogenic cellular and molecular mechanisms have been done using conventional animal models (i.e., chronically hypoxic and monocrotaline-injected rats) of pulmonary hypertension (PH). Although these animal models have contributed to provide important mechanistic insights for the development of the treatments, they do not develop the histological hallmarks of PAH, plexiform lesions. This chapter provides an overview of the histological characteristics observed in humans with pulmonary hypertension and preclinical models and discusses the better model to be used for investigating the pathogenesis of PAH and preclinical drug evaluations.
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Acknowledgment and Funding
We thank Dr. Masahiko Oka for helpful editorial comments. This work was supported by Grants-in-Aid for Scientific Research from the Japan Society for the Promotion Science (20588107).
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Abe, K. (2017). Animal Models with Pulmonary Hypertension. In: Fukumoto, Y. (eds) Diagnosis and Treatment of Pulmonary Hypertension. Springer, Singapore. https://doi.org/10.1007/978-981-287-840-3_7
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DOI: https://doi.org/10.1007/978-981-287-840-3_7
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