Altered gut microbiota and its association with inflammation in patients with chronic thromboembolic pulmonary hypertension: a single-center observational study in Japan

Autor: Yumiko Ikubo, Takayuki Jujo Sanada, Koji Hosomi, Jonguk Park, Akira Naito, Hiroki Shoji, Tomoko Misawa, Rika Suda, Ayumi Sekine, Toshihiko Sugiura, Ayako Shigeta, Hinako Nanri, Seiichiro Sakao, Nobuhiro Tanabe, Kenji Mizuguchi, Jun Kunisawa, Takuji Suzuki, Koichiro Tatsumi
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: BMC Pulmonary Medicine, Vol 22, Iss 1, Pp 1-11 (2022)
Druh dokumentu: article
ISSN: 1471-2466
DOI: 10.1186/s12890-022-01932-0
Popis: Abstract Background The pathogenesis of chronic thromboembolic pulmonary hypertension (CTEPH) is considered to be associated with chronic inflammation; however, the underlying mechanism remains unclear. Recently, altered gut microbiota were found in patients with pulmonary arterial hypertension (PAH) and in experimental PAH models. The aim of this study was to characterize the gut microbiota in patients with CTEPH and assess the relationship between gut dysbiosis and inflammation in CTEPH. Methods In this observational study, fecal samples were collected from 11 patients with CTEPH and 22 healthy participants. The abundance of gut microbiota in these fecal samples was assessed using 16S ribosomal ribonucleic acid (rRNA) gene sequencing. Inflammatory cytokine and endotoxin levels were also assessed in patients with CTEPH and control participants. Results The levels of serum tumor necrosis factor-α (TNF-α), interleukin (IL)-6, IL-8, and macrophage inflammatory protein (MIP)-1α were elevated in patients with CTEPH. Plasma endotoxin levels were significantly increased in patients with CTEPH (P
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