Logo Medical Science Monitor

Call: +1.631.470.9640
Mon - Fri 10:00 am - 02:00 pm EST

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

06 October 2016 : Laboratory Research  

Effects of mir-21 on Cardiac Microvascular Endothelial Cells After Acute Myocardial Infarction in Rats: Role of Phosphatase and Tensin Homolog (PTEN)/Vascular Endothelial Growth Factor (VEGF) Signal Pathway

Feng YangB, Wenwei LiuBC, Xiaojuan YanDE, Hanyun ZhouBCF, Hongshen ZhangDE, Jianfei LiuBC, Ming YuDE, Xiaoshan ZhuCDF, Kezhong MaAEG

DOI: 10.12659/MSM.897773

Med Sci Monit 2016; 22:3562-3575

Abstract

BACKGROUND: This study investigated how miR-21 expression is reflected in acute myocardial infarction and explored the role of miR-21 and the PTEN/VEGF signaling pathway in cardiac microvascular endothelial cells.

MATERIAL AND METHODS: We used an in vivo LAD rat model to simulate acute myocardial infarction. MiR-21 mimics and miR-21 inhibitors were injected and transfected into model rats in order to alter miR-21 expression. Cardiac functions were evaluated using echocardiographic measurement, ELISA, and Masson staining. In addition, lenti-PTEN and VEGF siRNA were transfected into CMEC cells using standard procedures for assessing the effect of PTEN and VEGE on cell proliferation, apoptosis, and angiogenesis. MiR-21, PTEN, and VEGF expressions were examined by RT-PCR and Western blot. The relationship between miR-21 and PTEN was determined by the luciferase activity assay.

RESULTS: We demonstrated that miR-21 bonded with the 3’-UTR of PTEN and suppressed PTEN expressions. Established models significantly induced cardiac infarct volume and endothelial injury marker expressions as well as miR-21 and PTEN expressions (P<0.05). MiR-21 mimics exhibited significantly protective effects since they down-regulated both infarction size and injury marker expressions by increasing VEGF expression and inhibiting PTEN expression (P<0.05). In addition, results from in vitro research show that lenti-PTEN and VEGF siRNA can notably antagonize the effect of miR-21 on cell proliferation, apoptosis, and angiogenesis (P<0.05).

CONCLUSIONS: MiR-21 exerts protective effects on endothelial injury through the PTEN/VEGF pathway after acute myocardial infarction.

Keywords: Apoptosis - genetics, Animals, Angiogenesis Inhibitors - metabolism, 3' Untranslated Regions, Endothelial Cells - pathology, mesenchymal stromal cells, Microvessels - pathology, Myocardial Infarction - pathology, Neovascularization, Pathologic - pathology, PTEN Phosphohydrolase - metabolism, RNA, Small Interfering - genetics, Rats, Rats, Sprague-Dawley, Signal Transduction, Tensins - metabolism, Vascular Endothelial Growth Factor A - metabolism

Comments

Editorial

01 January 2022 : Editorial  

Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Patients

Dinah V. Parums
Science Editor, Medical Science Monitor, International Scientific Information, Inc., Melville, NY, USA

DOI: 10.12659/MSM.935952

Med Sci Monit 2022; 28:e935952

SARS-CoV-2/COVID-19

25 January 2022 : Editorial  

Editorial: The 2022 World Health Organization (WHO) Priority Recommendations and Response to the Omicron Va...

Med Sci Monit In Press; DOI: 10.12659/MSM.936199  

25 January 2022 : Clinical Research  

Experience of the Polish Medical Air Rescue Service During the First Year of the COVID-19 Pandemic and Meas...

Med Sci Monit In Press; DOI: 10.12659/MSM.935474  

11 January 2022 : Clinical Research  

A Remote Questionnaire-Based Study to Compare Alcohol Use in 1030 Final-Year High School Students in Split-...

Med Sci Monit In Press; DOI: 10.12659/MSM.935567  

31 December 2021 : Clinical Research  

A Prospective Observational Study of 42 Patients with COVID-19 infection and a History of Hepatitis C Virus...

Med Sci Monit 2021; 27:e935075

In Press

27 Jan 2022 : Clinical Research  

Retrospective Study of the Association Between Platelet-to-Lymphocyte Ratio in Patients with Acute Coronary...

Med Sci Monit In Press; DOI: 10.12659/MSM.935002  

25 Jan 2022 : Editorial  

Editorial: The 2022 World Health Organization (WHO) Priority Recommendations and Response to the Omicron Va...

Med Sci Monit In Press; DOI: 10.12659/MSM.936199  

25 Jan 2022 : Clinical Research  

Experience of the Polish Medical Air Rescue Service During the First Year of the COVID-19 Pandemic and Meas...

Med Sci Monit In Press; DOI: 10.12659/MSM.935474  

24 Jan 2022 : Clinical Research  

Causes of Lower Respiratory Tract Infections and the Use of Diagnostic Biomarkers in Blood Samples from Chi...

Med Sci Monit In Press; DOI: 10.12659/MSM.934889  

Most Viewed Current Articles

30 Dec 2021 : Clinical Research  

Retrospective Study of Outcomes and Hospitalization Rates of Patients in Italy with a Confirmed Diagnosis o...

DOI :10.12659/MSM.935379

Med Sci Monit 2021; 27:e935379

01 Jan 2022 : Editorial  

Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...

DOI :10.12659/MSM.935952

Med Sci Monit 2022; 28:e935952

01 Nov 2020 : Review article  

Long-Term Respiratory and Neurological Sequelae of COVID-19

DOI :10.12659/MSM.928996

Med Sci Monit 2020; 26:e928996

05 Mar 2020 : Clinical Research  

The Effects of Social Support on Sleep Quality of Medical Staff Treating Patients with Coronavirus Disease ...

DOI :10.12659/MSM.923549

Med Sci Monit 2020; 26:e923549

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750