PMID- 29861433 OWN - NLM STAT- MEDLINE DCOM- 20181002 LR - 20181207 IS - 1420-3049 (Electronic) IS - 1420-3049 (Linking) VI - 23 IP - 6 DP - 2018 May 26 TI - Betaine Attenuates Monocrotaline-Induced Pulmonary Arterial Hypertension in Rats via Inhibiting Inflammatory Response. LID - 10.3390/molecules23061274 [doi] LID - 1274 AB - BACKGROUND: Pulmonary arterial hypertension (PAH) is characterized by increased pulmonary vascular resistance, leading to right ventricular failure and death. Recent studies have suggested that chronic inflammatory processes are involved in the pathogenesis of PAH. Several studies have demonstrated that betaine possesses outstanding anti-inflammatory effects. However, whether betaine exerts protective effects on PAH by inhibiting inflammatory responses in the lungs needs to be explored. To test our hypothesis, we aimed to investigate the effects of betaine on monocrotaline-induced PAH in rats and attempted to further clarify the possible mechanisms. METHODS: PAH was induced by monocrotaline (50 mg/kg) and oral administration of betaine (100, 200, and 400 mg/kg/day). The mean pulmonary arterial pressure, right ventricular systolic pressure, and right ventricle hypertrophy index were used to evaluate the development of PAH. Hematoxylin and eosin staining and Masson staining were performed to measure the extents of vascular remodeling and proliferation in fibrous tissue. Monocyte chemoattractant protein-1 (MCP-1) and endothelin-1 (ET-1) were also detected by immunohistochemical staining. Nuclear factor-kappaB (NF-kappaB), tumor necrosis factor alpha (TNF-alpha), and interleukin-1beta (IL-1beta) were assessed by Western blot. RESULTS: This study showed that betaine improved the abnormalities in right ventricular systolic pressure, mean pulmonary arterial pressure, right ventricle hypertrophy index, and pulmonary arterial remodeling induced by monocrotaline compared with the PAH group. The levels of MCP-1 and ET-1 also decreased. Western blot indicated that the protein expression levels of NF-kappaB, TNF-alpha, and IL-1beta significantly decreased (p < 0.01). CONCLUSION: Our study demonstrated that betaine attenuated PAH through its anti-inflammatory effects. Hence, the present data may offer novel targets and promising pharmacological perspectives for treating monocrotaline-induced PAH. FAU - Yang, Jia-Mei AU - Yang JM AD - Department of Pharmacology, Ningxia Medical University, Yinchuan 750004, China. m15809581390@163.com. FAU - Zhou, Ru AU - Zhou R AD - Department of Pharmacology, Ningxia Medical University, Yinchuan 750004, China. zhou-ru926@163.com. AD - Ningxia Hui Medicine Modern Engineering Research Center and Collaborative Innovation Center, Ningxia Medical University, Yinchuan 750004, China. zhou-ru926@163.com. AD - Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of Education, Ningxia Medical University, Yinchuan 750004, China. zhou-ru926@163.com. FAU - Zhang, Min AU - Zhang M AD - Department of Pharmacology, Ningxia Medical University, Yinchuan 750004, China. 18209511903@163.com. FAU - Tan, Huan-Ran AU - Tan HR AD - Department of Pharmacology, Peking University, Health Science Center, Beijing 100191, China. tanlab@bjmu.edu.cn. FAU - Yu, Jian-Qiang AU - Yu JQ AD - Department of Pharmacology, Ningxia Medical University, Yinchuan 750004, China. Yujqlab@163.com. AD - Ningxia Hui Medicine Modern Engineering Research Center and Collaborative Innovation Center, Ningxia Medical University, Yinchuan 750004, China. Yujqlab@163.com. LA - eng PT - Journal Article DEP - 20180526 PL - Switzerland TA - Molecules JT - Molecules (Basel, Switzerland) JID - 100964009 RN - 0 (Anti-Inflammatory Agents, Non-Steroidal) RN - 0 (Biomarkers) RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Cytokines) RN - 0 (Endothelin-1) RN - 0 (Inflammation Mediators) RN - 0 (NF-kappa B) RN - 3SCV180C9W (Betaine) RN - 73077K8HYV (Monocrotaline) SB - IM MH - Animals MH - Anti-Inflammatory Agents, Non-Steroidal/*pharmacology MH - Betaine/*pharmacology MH - Biomarkers MH - Chemokine CCL2/metabolism MH - Cytokines/metabolism MH - Disease Models, Animal MH - Endothelin-1/metabolism MH - Hemodynamics/drug effects MH - Hypertension, Pulmonary/drug therapy/*etiology/metabolism/*physiopathology MH - Hypertrophy, Right Ventricular/drug therapy/etiology/pathology MH - Immunohistochemistry MH - Inflammation Mediators/metabolism MH - Male MH - Monocrotaline/*adverse effects MH - Myocardium/metabolism/pathology MH - NF-kappa B/metabolism MH - Pulmonary Artery/*drug effects/*physiopathology MH - Rats PMC - PMC6100216 OTO - NOTNLM OT - betaine OT - inflammatory response OT - pulmonary arterial hypertension COIS- The authors declare no conflict of interest associated with this work. EDAT- 2018/06/05 06:00 MHDA- 2018/10/03 06:00 PMCR- 2018/05/26 CRDT- 2018/06/05 06:00 PHST- 2018/04/11 00:00 [received] PHST- 2018/05/16 00:00 [revised] PHST- 2018/05/24 00:00 [accepted] PHST- 2018/06/05 06:00 [entrez] PHST- 2018/06/05 06:00 [pubmed] PHST- 2018/10/03 06:00 [medline] PHST- 2018/05/26 00:00 [pmc-release] AID - molecules23061274 [pii] AID - molecules-23-01274 [pii] AID - 10.3390/molecules23061274 [doi] PST - epublish SO - Molecules. 2018 May 26;23(6):1274. doi: 10.3390/molecules23061274.