University of Targu Mures

Târgu Secuiesc, Romania

University of Targu Mures

Târgu Secuiesc, Romania
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Gyongyosi M.,Medical University of Vienna | Hemetsberger R.,Medical University of Vienna | Wolbank S.,Ludwig Boltzmann Research Institute | Pichler V.,Ludwig Boltzmann Research Institute | And 14 more authors.
Stem Cell Reviews and Reports | Year: 2011

The aim of the present study was to investigate the changes in absolute myocardial blood flow (AMF) after intracoronary injections of mesenchymal SC (MSC) and compared to controls in closed-chest reperfused acute myocardial infarction (AMI) in pigs. Male MSCs, transiently transfected with Luciferase (Luc-MSC) were delivered (9:7 ± 1:2 ± 10 6) intracoronary in the open infarct-related artery one-week post-AMI in female pigs (group MSC), while saline was injected with the same injection rate in controls (group C). The AMF was measured immediately after, and 3, 12 and 24 h post-intracoronary Luc-MSC or saline injections. In vitro bioluminescence images and quantitative real-time TaqMan PCR measurements were performed to quantify the sex-mismatched MSCs. No difference between the groups was observed regarding the weight, heart rate, blood pressure and global ejection fraction 1-week post-AMI. The baseline AMF were similar in the groups (61.3 ± 15. vs 61.1 ± 12.0 ml/min). AMF was decreased significantly immediately after intracoronary MSC delivery (42.0 ± 12.4 vs 57.7 ± 15.7 ml/min p = 0.013), and remained low at 3 h (40.9 ± 13.4 vs 55.8 ± 4.9 ml/min, p = 0.004), 12 h (43.0 ± 3.7 vs 57.8 ± 5.4 ml/min, p = 0.001) with incomplete recovery at 24 h (47.2 ± 5.5 vs 62.1 ± 14.1 ml/min, p = 0.038) as compared to controls, respectively. In vitro bioluminescence displayed transfected Luc-MSCs along the proximal and mid part of the LAD, with limited number (295 ± 101 sry copied/million cardiac cells) of Y-chromosome-MSCs in the infarcted area. Intracoronary injection of SCs results in immediate decrease of AMF, with delayed recovery. The delivery of the SC into the injured myocardium might be hindered by the altered coronary pressure and flow conditions. © 2010 Springer Science+Business Media, LLC.

Gyongyosi M.,Medical University of Vienna | Hemetsberger R.,Medical University of Vienna | Posa A.,Medical University of Vienna | Charwat S.,Medical University of Vienna | And 11 more authors.
Journal of Cardiovascular Translational Research | Year: 2010

We have investigated the effect of stem cell delivery on the release of hypoxia-inducible factor 1 alpha (HIF-1α) in peripheral circulation and myocardium in experimental myocardial ischemia. Closed-chest, reperfused myocardial infarction (MI) was created in domestic pigs. Porcine mesenchymal stem cells (MSCs) were cultured and delivered (9.8±1.2×10 6) either percutaneously NOGAguided transendocardially (Group IM) or intracoronary (Group IC) 22±4 days post-MI. Pigs without MSC delivery served as sham control (Group S). Plasma HIF-1α was measured at baseline, immediately post-and at follow-up (FUP; 2 h or 24 h) post-MSC delivery by ELISA kit. Myocardial HIF-1α expression of infarcted, normal myocardium, or border zone was determined by Western blot. Plasma level of HIF-1α increased immediately post-MI (from 278±127 to 631±375 pg/ml, p<0.05). Cardiac delivery of MSCs elevated the plasma levels of HIF-1α significantly (p lt;0.05) in groups IC and IM immediately post-MSC delivery, and returned to baseline level at FUP, without difference between the groups IC and IM. The myocardial tissue HIF-1α expression in the infarcted area was higher in Group IM than in Group IC or S (1,963±586 vs. 1,307±392 vs. 271±110 activity per square millimeter, respectively, p<0.05), while the border zone contained similarly lower level of HIF-1α, but still significantly higher as compared with Group S. Trend towards increase in myocardial expression of HIF-1α was measured in Group IM at 24 h, in contrast to Group IC. In conclusion, both stem cell delivery modes increase the systemic and myocardial level of HIF-1α. Intramyocardial delivery of MSC seems to trigger the release of angiogenic HIF-1α more effectively than does intracoronary delivery. © Springer Science+Business Media, LLC 2009.

Gyongyosi M.,Medical University of Vienna | Giurgea G.-A.,Medical University of Vienna | Syeda B.,Medical University of Vienna | Charwat S.,Medical University of Vienna | And 29 more authors.
PLoS ONE | Year: 2016

Objective The long-term (5-year) outcome of early (3±6 weeks after acute myocardial infarction [AMI], BM-MNC Early group) and late (3±4 months after AMI, BM-MNC Late group) combined (percutaneous intramyocardial and intracoronary) delivery of autologous bone marrow mononuclear cells (BM-MNCs) was evaluated in patients with ejection fractions (EF) between 30±45% post-AMI. Methods Major adverse cardiac and cerebrovascular events (MACCE) and hospitalization were recorded. Left (LV) and right (RV) ventricular function were measured by transthoracic echocardiography. Cardiac magnetic resonance imaging (MRI) and myocardial single photon emission computed tomography was performed in a subgroup of patients. Pre-cell therapy myocardial voltage values of treated areas (assessed by NOGA mapping) were correlated with clinical outcome. Results Five-year MACCE incidences (7.4%. vs 24.1%) and the composite of all adverse events (11.1% vs 27.6%) were not different between the Early and Late treatment groups. The significant LV-EF increase at 1-year follow-up was preserved at the 5-year control (from baseline to 5-year: 5.3%, 95% CI:0.5±10.1, and 5.7%, 95% CI:1.7±9.6, p<0.05 in the Early and Late groups, respectively), with no significant changes between 1- and 5-year followups. Similarly, RVEF increased significantly from baseline to the 5-year follow-up (Early group: 5.4%, 95% CI:1.0±9.6; and Late group: 8.4%, 95% CI:4.5±12.3). Lower baseline levels of myocardial viability of the treated cardiac area (6.3±2.4 vs 8.2±3.0 mV, p<0.05) were associated with incidence of MACCE. Conclusions Percutaneous combined delivery of autologous BM-MNCs is feasible and safe after 5 years, and may result in sustained improvement of cardiac function at 5 years in patients with low EF post-AMI ( NCT01395212). © 2016 Gyöngyösi et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Mokdad C.,Clinique Gynecologique et Obstetricale | Rozsnayi F.,University Of Targu Mures | Delaunay F.,Clinique Gynecologique et Obstetricale | Gregorczyk V.,Clinique Gynecologique et Obstetricale | And 4 more authors.
Gynecologie Obstetrique Fertilite | Year: 2010

Tubo-ovarian abscesses are likely to occur in women suffering from deep endometriosis. The aim of surgical management of tubo-ovarian abscesses is the laparoscopic drainage, while deep endometriosis resection should be delayed. Laparoscopic procedure carried out in emergency does not attempt at the excision of deep endometriotic lesions, and must avoid the choice of the laparoconversion, in order to avoid further changes in the pelvic anatomy rendering more difficult a curative surgery. We report six cases of patients presenting tubo-ovarian abscesses arising on deep endometriosis, and we discuss the choice of the 2-step surgical management. In four cases, deep endometriosis resection has been performed by laparoscopic route few months after the drainage of abscess and provided macroscopically complete excision of the disease. © 2010 Elsevier Masson SAS.

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