PMID- 20088932 OWN - NLM STAT- MEDLINE DCOM- 20100708 LR - 20230829 IS - 1538-7836 (Electronic) IS - 1538-7836 (Linking) VI - 8 IP - 4 DP - 2010 Apr TI - Pulmonary hypertension is ameliorated in mice deficient in thrombin-activatable fibrinolysis inhibitor. PG - 808-16 LID - 10.1111/j.1538-7836.2010.03751.x [doi] AB - BACKGROUND: The fibrinolytic system has been implicated in the pathogenesis of pulmonary hypertension (PH). Thrombin-activatable fibrinolysis inhibitor (TAFI) inhibits fibrinolysis and therefore its absence would be expected to increase fibrinolysis and ameliorate PH. OBJECTIVE: The objective of the present study was to evaluate the effect of TAFI deficiency on pulmonary hypertension in the mouse. METHODS AND RESULTS: PH was induced in C57/Bl6 wild-type (WT) or TAFI-deficient (KO) mice by weekly subcutaneous treatment with 600 mg kg(-1) monocrotaline (MCT) for 8 weeks. PH was inferred from right heart hypertrophy measured using the ratio of right ventricle-to-left ventricle-plus-septum weight [RV/(LV+S)]. Pulmonary vascular remodeling was analyzed by morphometry. TAFI-deficient MCT-treated and wild-type MCT-treated mice suffered similar weight loss. TAFI-deficient MCT-treated mice had reduced levels of total protein and tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), transforming growth factor-beta (TGF-beta) and monocyte chemoattractant protein-1 (MCP-1) in bronchial alveolar lavage compared with wild-type MCT-treated mice. The ratio of RV to (LV+S) weight was significantly higher in WT/MCT than in KO/MCT mice. The pulmonary artery wall area and vascular stenosis were both greater in MCT-treated WT mice compared with MCT-treated TAFI-deficient mice. CONCLUSIONS: TAFI-deficient MCT-treated mice had less pulmonary hypertension, vascular remodeling and reduced levels of cytokines compared with MCT-treated WT animals, possibly as a result of reduced coagulation activation. FAU - Qin, L AU - Qin L AD - Department of Immunology, Mie University School of Medicine, Edobashi 2-174, Tsu city, Mie 514-8507, Japan. FAU - D'Alessandro-Gabazza, C N AU - D'Alessandro-Gabazza CN FAU - Aoki, S AU - Aoki S FAU - Gil-Bernabe, P AU - Gil-Bernabe P FAU - Yano, Y AU - Yano Y FAU - Takagi, T AU - Takagi T FAU - Boveda-Ruiz, D AU - Boveda-Ruiz D FAU - Ramirez Marmol, A Y AU - Ramirez Marmol AY FAU - San Martin Montenegro, V T AU - San Martin Montenegro VT FAU - Toda, M AU - Toda M FAU - Miyake, Y AU - Miyake Y FAU - Taguchi, O AU - Taguchi O FAU - Takei, Y AU - Takei Y FAU - Morser, J AU - Morser J FAU - Gabazza, E C AU - Gabazza EC LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100117 PL - England TA - J Thromb Haemost JT - Journal of thrombosis and haemostasis : JTH JID - 101170508 RN - 0 (Biomarkers) RN - 0 (Ccl2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (Inflammation Mediators) RN - 0 (Interleukin-6) RN - 0 (Platelet-Derived Growth Factor) RN - 0 (Transforming Growth Factor beta1) RN - 0 (Tumor Necrosis Factor-alpha) RN - 73077K8HYV (Monocrotaline) RN - EC 3.4.17.20 (Carboxypeptidase B2) SB - IM MH - Animals MH - Biomarkers/metabolism MH - Bronchoalveolar Lavage Fluid/immunology MH - Capillary Permeability MH - Carboxypeptidase B2/*deficiency/genetics MH - Chemokine CCL2/metabolism MH - Disease Models, Animal MH - *Fibrinolysis/genetics MH - Hypertension, Pulmonary/blood/chemically induced/genetics/immunology/pathology/*prevention & control MH - Hypertrophy, Right Ventricular/blood/prevention & control MH - Inflammation Mediators/metabolism MH - Interleukin-6/metabolism MH - Lung/blood supply/immunology/*metabolism/pathology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Monocrotaline MH - Platelet-Derived Growth Factor/metabolism MH - Pulmonary Artery/metabolism/pathology MH - Transforming Growth Factor beta1/metabolism MH - Tumor Necrosis Factor-alpha/metabolism MH - Weight Loss EDAT- 2010/01/22 06:00 MHDA- 2010/07/09 06:00 CRDT- 2010/01/22 06:00 PHST- 2010/01/22 06:00 [entrez] PHST- 2010/01/22 06:00 [pubmed] PHST- 2010/07/09 06:00 [medline] AID - S1538-7836(22)11320-6 [pii] AID - 10.1111/j.1538-7836.2010.03751.x [doi] PST - ppublish SO - J Thromb Haemost. 2010 Apr;8(4):808-16. doi: 10.1111/j.1538-7836.2010.03751.x. Epub 2010 Jan 17.