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Aleksandric S, Al-Lamee R, Djordjevic-Dikic A, Giga V, Tesic M, Banovic M, Zobenica V, Vukcevic V, Tomasevic M, Stojkovic S, Orlic D, Nedeljkovic M, Stankovic G, Davies J, Beleslin B. Diagnostic accuracy of instantaneous wave-free ratio at rest and during dobutamine provocation to assess myocardial bridging relevance. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Diastolic fractional flow reserve (d-FFR) during dobutamine provocation (DOB) was found to be a more reliable physiological index for the functional assessment of myocardial bridging (MB). However, d-FFR calculation is complicated and time-consuming, and therefore several authors have suggested the use of instantaneous wave-free ratio (iFR) to overcome these issues.
Purpose
The aim of our study was to assess diagnostic performance of d-FFR and iFR at rest and during DOB with exercise-induced myocardial ischemia as reference.
Methods
Twenty-four symptomatic patients (17 males, mean age 58±8 years) with MB and systolic compression ≥50% diameter stenosis on the left anterior descending (LAD) artery were included. Exercise stress-echocardiography test (SE), and both d-FFR and iFR in the distal segment of LAD at rest and peak DOB (30–50μg/kg/min), were performed in all patients. Optimal cut-off values and diagnostic performance of resting and hyperemic d-FFR and iFR were assessed using SE.
Results
Exercise-SE was positive for myocardial ischemia in 7/24 patients (29%). The area-under-the-receiver-operating-characteristic curve (ROC-AUC) for exercise-induced myocardial ischemia was 0.64 (95% CI: 0.400–0.885) for resting d-FFR, 0.62 (95% CI: 0.378–0.866) for resting iFR, 1.000 (95% CI: 0.999–1.000) for d-FFR at peak DOB, and 0.96 (95% CI: 0.895–1.000) for iFR at peak DOB. No significant difference in ROC-AUC was observed between d-FFR and iFR at peak DOB (p=0.243). The best cut-off value for both d-FFR and iFR at peak DOB was <0.76 with similar sensitivity and negative predictive values (100 vs. 100% for both), but lower specificity and positive predictive value for iFR in identifying MB associated with exercise-induced ischemia (94% vs. 82%; 88% vs. 70%, respectively). Compared with exercise-induced myocardial ischemia, the diagnostic accuracy of d-FFR and iFR at peak DOB was 96% (kappa=0.903, p<0.001) and 88% (kappa=0.731, p<0.001), respectively.
Conclusions
iFR during DOB provocation showed similar diagnostic accuracy as d-FFR to identify the functionally significant MB when compared with exercise-induced myocardial ischemia.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Aleksandric
- Clinical Center of Serbia, Clinic for Cardiology , Belgrade , Serbia
| | - R Al-Lamee
- Imperial College London , London , United Kingdom
| | | | - V Giga
- Clinical Center of Serbia, Clinic for Cardiology , Belgrade , Serbia
| | - M Tesic
- Clinical Center of Serbia, Clinic for Cardiology , Belgrade , Serbia
| | - M Banovic
- Clinical Center of Serbia, Clinic for Cardiology , Belgrade , Serbia
| | - V Zobenica
- Clinical Center of Serbia, Clinic for Cardiology , Belgrade , Serbia
| | - V Vukcevic
- Clinical Center of Serbia, Clinic for Cardiology , Belgrade , Serbia
| | - M Tomasevic
- Clinical Center Kragujevac, Clinic for Cardiology , Kragujevac , Serbia
| | - S Stojkovic
- Clinical Center of Serbia, Clinic for Cardiology , Belgrade , Serbia
| | - D Orlic
- Clinical Center of Serbia, Clinic for Cardiology , Belgrade , Serbia
| | - M Nedeljkovic
- Clinical Center of Serbia, Clinic for Cardiology , Belgrade , Serbia
| | - G Stankovic
- Clinical Center of Serbia, Clinic for Cardiology , Belgrade , Serbia
| | - J Davies
- Imperial College London , London , United Kingdom
| | - B Beleslin
- Clinical Center of Serbia, Clinic for Cardiology , Belgrade , Serbia
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2
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Aleksandric S, Djordjevic-Dikic A, Tesic M, Giga V, Dobric M, Banovic M, Boskovic N, Juricic S, Vukcevic V, Tomasevic M, Stojkovic S, Orlic D, Nedeljkovic M, Stankovic G, Beleslin B. Cut-off value of coronary flow velocity reserve obtained by transthoracic Doppler echocardiography during intravenous infusion of dobutamine for diagnosis of functional significant myocardial bridging. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Recent studies showed that coronary flow velocity reserve (CFVR) measurement by transthoracic Doppler echocardiography (TTDE) during inotropic stimulation with dobutamine (DOB), in comparison to vasodilation with adenosine, provides more reliable functional evaluation of myocardial bridging (MB). However, the adequate cut-off value of CFVR during DOB for diagnosing functional significant MB has not been fully established.
Purpose
The purpose of the study was to evaluate the adequate cut-off value of TTDE- CFVR during DOB for diagnosis of functional significant MB.
Methods
This prospective study included 79 patients (54 males, mean age 55±10 years) with angiographic evidence of isolated MB on the left anterior descending artery (LAD) and systolic compression ≥50% diameter stenosis. Exercise stress-echocardiography test (ExSE) and TTDE-CFVR in the distal segment of LAD during DOB infusion (DOB: 10–40μg/kg/min) were performed in all patients. Percent diameter stenosis (DS) of MB at end-systole and end-diastole were analyzed using quantitative coronary angiography.
Results
Exercise-SE was positive for myocardial ischemia in 22/79 (28%). CFVR during peak DOB was significantly lower in SE-positive group in comparison to SE-negative group (1.94±0.16 vs. 2.78±0.53, p<0.001). ROC analysis identifies the optimal CFVR during peak DOB cut-off value <2.1 (AUC 0.985, 95% CI: 0.965–1.000, p<0.001), with a sensitivity of 96% and specificity of 95%, positive predictive value of 88%, and negative predictive value of 98%, for identifying functionally significant MB associated with stress-induced myocardial ischemia. The categorical agreement between TTDE-CFVR at peak DOB and ExSE was high (kappa value = 0.877, p<0.001). Multivariate logistic regression analysis showed that percent DS at end-diastole was the only independent predictor of ischemic CFVR value <2.1 (OR: 1.136, 95% CI: 1.045–1.235, p=0.003).
Conclusion
A cut-off value <2.1 of CFVR during DOB infusion obtained by TTDE may adequate discriminate functional significant MB that induce myocardial ischemia which is caused by an incomplete diastolic MB-decompression.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Aleksandric
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | | | - M Tesic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - V Giga
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Dobric
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Banovic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - N Boskovic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - S Juricic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - V Vukcevic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Tomasevic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - S Stojkovic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - D Orlic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Nedeljkovic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - G Stankovic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - B Beleslin
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
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3
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Kovac M, Eric B, Stojneva-Istatkov J, Lukic V, Milic A, Vukicevic D, Orlic D, Tomic B. Iron status among blood donors deferred due to low haemoglobin level. VOJNOSANIT PREGL 2021. [DOI: 10.2298/vsp190327063k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Background/Aim. Haemoglobin (Hb) determination is a routine part of the blood donor selection process. Previously reported studies have revealed that iron deficiency is common in frequent donors. This prospective investigation was aimed at examining iron status among blood donors with low circulating Hb and evaluating correlation between Hb values determined by capillary methods and those obtained by reference method from venous blood count (BC), as well as ferritin level. Methods. Between February 2017 and December 2018, 200 consecutively recruited regular blood donors with low Hb, aged 19 to 64 years (median 39), were included. Hb level was determined using the copper sulphate method, the HemoCue capillary method, and also from venous blood within the complete blood count (CBC) test. Plasma ferritin was determined turbidimetrically. Results. In 42.7% of men and 57.3% of women, ferritin concentration was low (p = 0.008). The relative numbers of males and females, with levels < 12 ?g/L (p = 0.023) or > 50 ?g/L (p = 0.022), differed. Comparison of the values obtained with the capillary methods with reference Hb levels obtained from the CBC test showed that the copper sulphate procedure gave false fails in 10.5% of cases (p < 0.001). Hb values from HemoCue were significantly correlated with Hb values from the CBC test, but no correlation was observed between ferritin levels and Hb levels determined by both capillary method. Conclusion. Low ferritin was observed in 51.5% of Serbian blood donors deferred due to low Hb. Based on our results, the determination of the algorithm in the iron deficiency detection is necessary, while the capillary method (HemoCue) represents a more convenient method for Hb testing prior to blood donation.
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Affiliation(s)
- Mirjana Kovac
- University of Belgrade, Blood Transfusion Institute of Serbia, Belgrade, Serbia + University of Belgrade, Faculty of Medicine, Belgrade, Serbia
| | - Bojana Eric
- University of Belgrade, Blood Transfusion Institute of Serbia, Belgrade, Serbia
| | | | - Vojislav Lukic
- University of Belgrade, Blood Transfusion Institute of Serbia, Belgrade, Serbia
| | - Ana Milic
- University of Belgrade, Blood Transfusion Institute of Serbia, Belgrade, Serbia
| | - Dragana Vukicevic
- University of Belgrade, Blood Transfusion Institute of Serbia, Belgrade, Serbia
| | - Dusan Orlic
- University of Belgrade, Blood Transfusion Institute of Serbia, Belgrade, Serbia
| | - Branko Tomic
- University of Belgrade, Institute of Molecular Genetics and Genetic Engineering, Belgrade, Serbia
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4
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Juricic S, Petrovic O, Tesic M, Dobric M, Dikic M, Mehmedbegovic Z, Zivkovic M, Vukcevic V, Aleksandric S, Milasinovic D, Tomasevic M, Orlic D, Stankovic G, Beleslin B, Stojkovic S. A two year echocardiographic follow-up of patients with chronic total occlusion treated with percutaneous coronary intervention or receiving only medical therapy. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Percutaneous coronary intervention of chronic total occlusion (PCI CTO) can reduce angina and the need for bypass surgery, however, it is still not clear how it effects the myocardial function. Conventional echocardiography is subjective and experience-dependent while tissue Doppler imaging together with strain imaging provides a more objective assessment of myocardial contractility.
Purpose
Our aim was to access the effectiveness of percutaneous coronary intervention (PCI) along with optimal medical therapy (OMT) on myocardial function.
Methods
We compared two groups of patients. The first group of patients underwent PCI CTO with OMT while the second group of patients only received OMT (control group). The echocardiographic exam was performed before randomization and after 24 months of follow-up. Doppler time intervals- isovolumetric relaxation time (IVRT), isovolumetric contraction time (IVCT) and ejection time (ET) were measured from mitral inflow and left ventricular outflow Doppler tracings. Myocardial performance index (MPI) is equal to the sum of the IVRT and IVCT divided by the ET. Velocity of early mitral filling wave (E) was measured and divided by average peak early diastolic annular velocity (e'). Peak longitudinal strain was assessed in 17 left ventricular segments. Time intervals from start Q/R on electrocardiogram to peak negative strain during the cardiac cycle were assessed. Mechanical dispersion was defined as the standard deviation of this time interval from 17 left ventricular segments, reflecting myocardial contraction heterogeneity
Results
Comparing the groups at follow up, there was no significant change in ejection fraction (EF), diastolic function, and mechanical dispersion, however, there was improvement in GLS and MPI (Table 1).
Conclusion
Global longitudinal strain as a parameter of systolic function and Myocardial performance index as a parametar of global systolic and diastolic function are sensitive markers that can detect subtle improvement in myocardial function after recanalisation of CTO.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- S Juricic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - O Petrovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Tesic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Dobric
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Dikic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - Z Mehmedbegovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Zivkovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - V Vukcevic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - S Aleksandric
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - D Milasinovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Tomasevic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - D Orlic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - G Stankovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - B Beleslin
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - S Stojkovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
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5
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Juricic S, Petrovic O, Tesic M, Dobric M, Orlic D, Aleksandric S, Trifunovic-Zamaklar D, Vukcevic V, Djordjevic-Dikic A, Mehmedbegovic Z, Milasinovic D, Zivkovic M, Stankovic G, Beleslin B, Stojkovic S. P284 Patients with reduced systolic function benefit most from recanalisation of chronic total occlusion. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Percutaneous coronary intervention of chronic total coronary occlusion (PCI of CTO) is proved to reduce symptoms of angina and long term survival.
Purpose
This study aimed to assess systolic and diastolic left ventricular function with standard echocardiographic indices.
Methods
We analyzed total of 46 CTO patients (age 58 ± 9, 73% male). Measures were obtained with the transducer in the apical four-chamber view. Doppler time intervals were measured from mitral inflow and left ventricular outflow Doppler tracings by pulsed wave Doppler. The isovolumetric relaxation time (IVRT) was measured from closure of the aortic valve to opening of the mitral valve. The isovolumetric contraction time (IVCT) was measured from closure of the mitral valve to opening of the aortic valve. Ejection time (ET) was measured from the opening to the closure of the aortic valve on the LV outflow velocity profile. Myocardial performance index (MPI) is simple method for evaluation of overall cardiac function and is independent of heart rate and blood pressure. MPI was equal to the sum of the IVRT and IVCT divided by the ET. Velocity of early mitral filling wave (E) was measured and divided by average peak early diastolic annular velocity (e") which was measured as average value between septal and lateral side of the mitral annulus using Doppler tissue imaging. The E/e’ ratio was calculated to estimate the LV filling pressures
Results
Six months after PCI of CTO patients showed no change in ejection fraction (EF) (55.69 ± 8.56% vs. 54.83 ± 8.44%, p = 0.10). MPI was significantly decreased (0.676 ± 0.99 vs. 0.632 ± 0.96 p < 0.01), E/e" was significantly reduced, (13,10 ± 6.90 vs. 12.05 ± 5.1 p < 0.05), and when we analyzed only patients with baseline EF < 50% (n = 9) improvement of diastolic function (reduction of E/e") was even greater (22.53 ± 5.52 vs. 15.65 ± 4.8 p < 0.01).
Conclusion
PCI of CTO improves overall cardiac function, particularly diastolic function in patients with reduced ejection fraction.
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Affiliation(s)
- S Juricic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - O Petrovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Tesic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Dobric
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - D Orlic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - S Aleksandric
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | | | - V Vukcevic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | | | - Z Mehmedbegovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - D Milasinovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Zivkovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - G Stankovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - B Beleslin
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - S Stojkovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
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6
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Aleksandric S, Djordjevic-Dikic A, Stepanovic J, Dobric M, Giga V, Stankovic G, Vukcevic V, Tomasevic M, Stojkovic S, Orlic D, Saponjski M, Nedeljovic M, Juricic S, Petrovic MT, Beleslin B. P5510Stress-induced myocardial ischemia in patients with myocardial bridging: correlations with fractional flow reserve and quantitative coronary angiography measurements during dobutamine infusion. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S Aleksandric
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | | | - J Stepanovic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Dobric
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - V Giga
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - G Stankovic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - V Vukcevic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Tomasevic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - S Stojkovic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - D Orlic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Saponjski
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Nedeljovic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - S Juricic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M T Petrovic
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - B Beleslin
- Clinical Center of Serbia, Clinic for Cardiology, Belgrade, Serbia
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7
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Juricic S, Petrovic O, Tesic M, Dobric M, Aleksandric S, Mehmedbegovic Z, Zivkovic M, Milasinovic D, Dedovic V, Tomasevic M, Orlic D, Vukcevic V, Beleslin B, Stankovic G, Stojkovic S. P3579Prospective randomised comparison of percutaneous coronary intervention and optimal medical therapy in patients with chronic total occlusion. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S Juricic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - O Petrovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Tesic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Dobric
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - S Aleksandric
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - Z Mehmedbegovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Zivkovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - D Milasinovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - V Dedovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - M Tomasevic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - D Orlic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - V Vukcevic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - B Beleslin
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - G Stankovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
| | - S Stojkovic
- Clinical center of Serbia, Clinic for Cardiology, Belgrade, Serbia
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8
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Petrovic M, Boskovic N, Giga V, Rakocevic I, Trifunovic D, Dobric M, Tesic M, Aleksandric S, Orlic D, Nedeljkovic I, Saponjski J, Djordjevic-Dikic A, Beleslin B, Ostojic M, Stepanovic J. P564Significance of heart rate recovery after exercise testing in patients with type 2 diabetes and silent myocardial ischemia. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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9
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Winter R, Fazlinezhad A, Martins Fernandes S, Pellegrino M, Iriart X, Moustafa S, Stolfo D, Bieseviciene M, Patel S, Vriz O, Sarvari SI, Santos M, Berezin A, Stoebe S, Benyounes Iglesias N, De Chiara B, Soliman A, Oni O, Ricci F, Tumasyan LR, Kim KH, Popa BA, Yiangou K, Olsen RH, Cacicedo A, Monti L, Holte E, Orlic D, Trifunovic D, Nucifora G, Casalta AC, Cavalcante JL, Keramida K, Calin A, Almeida Morais L, Bandera F, Galli E, Kamal HM, Leite L, Polte CL, Martinez Santos P, Jin CN, Generati G, Reali M, Kalcik M, Cacicedo A, Nascimento H, Ferreiro Quero C, Kazum S, Madeira S, Villagra JM, Muraru D, Gobbo M, Generati G, D'andrea A, Azevedo O, Nucifora G, Cruz I, Lozano Granero VC, Stampfli SF, Marketou M, Bento D, Mohty D, Hernandez Jimenez V, Gascuena R, Ingvarsson A, Cameli M, Werther Evaldsson A, Greiner S, Michelsen MM, El Eraky AZZA, Kamal HM, D'ascenzi F, Spinelli L, Stojanovic S, Mincu RI, Vindis D, Mantovani F, Yi JE, Styczynski G, Battah AHMED, O'driscoll J, Generati G, Velasco Del Castillo S, Voilliot D, Scali MC, Garcia Campos A, Opitz B, Herold IHF, Veiga CESAR, Santos Furtado M, Khan UM, Leite L, Leite L, Leite L, Keramida K, Molnar AA, Rio P, Huang MS, Papadopoulos C, Venneri L, Onut R, Casas Rojo E, Bayat F, Aggeli C, Ben Kahla S, Abid L, Choi JH, Barreiro Perez M, Lindqvist P, Sheehan F, Vojdanparast M, Nezafati P, Teixeira R, Generati G, Bandera F, Labate V, Alfonzetti E, Guazzi M, Dinet ML, Jalal Z, Cochet H, Thambo JB, Ho TH, Shah P, Murphy K, Nelluri BK, Lee H, Wilansky S, Mookadam F, Tonet E, Merlo M, Barbati G, Gigli M, Pinamonti B, Ramani F, Zecchin M, Sinagra G, Vaskelyte JJ, Mizariene V, Lesauskaite V, Verseckaite R, Karaliute R, Jonkaitiene R, Li L, Craft M, Danford D, Kutty S, Pellegrinet M, Zito C, Carerj S, Di Bello V, Cittadini A, Bossone E, Antonini-Canterin F, Rodriguez M, Sitges M, Sepulveda-Martinez A, Gratacos E, Bijnens B, Crispi F, Leite L, Martins R, Baptista R, Barbosa A, Ribeiro N, Oliveira A, Castro G, Pego M, Samura T, Kremzer A, Tarr A, Pfeiffer D, Hagendorff A, Van Der Vynckt C, Gout O, Devys JM, Cohen A, Musca F, D'angelo L, Cipriani MG, Parolini M, Rossi A, Santambrogio GM, Russo C, Giannattasio C, Moreo A, Moharram M, Gamal A, Reda A, Adebiyi A, Aje A, Aquilani R, Dipace G, Bucciarelli V, Bianco F, Miniero E, Scipioni G, De Caterina R, Gallina S, Adamyan KG, Chilingaryan AL, Tunyan LG, Cho JY, Yoon HJ, Ahn Y, Jeong MH, Cho JG, Park JC, Popa A, Cerin G, Azina CH, Yiangou A, Georgiou C, Zitti M, Ioannides M, Chimonides S, Pedersen LR, Snoer M, Christensen TE, Ghotbi AA, Hasbak P, Kjaer A, Haugaard SB, Prescott E, Velasco Del Castillo S, Gomez Sanchez V, Anton Ladislao A, Onaindia Gandarias J, Rodriguez Sanchez I, Jimenez Melo O, Garcia Cuenca E, Zugazabeitia Irazabal G, Romero Pereiro A, Nardi B, Di Giovine G, Malanchini G, Scardino C, Balzarini L, Presbitero P, Gasparini GL, Tesic M, Zamaklar-Trifunovic D, Vujisic-Tesic B, Borovic M, Milasinovic D, Zivkovic M, Kostic J, Belelsin B, Ostojic M, Krljanac G, Savic L, Asanin M, Aleksandric S, Petrovic M, Zlatic N, Lasica R, Mrdovic I, Muser D, Zanuttini D, Tioni C, Bernardi G, Spedicato L, Proclemer A, Galli E, Szymanski C, Salaun E, Lavoute C, Haentjens J, Tribouilloy C, Mancini J, Donal E, Habib G, Delgado-Montero A, Dahou A, Caballero L, Rijal S, Gorcsan J, Monin JL, Pibarot P, Lancellotti P, Kouris N, Kostopoulos V, Giannaris V, Trifou E, Markos L, Mihalopoulos A, Mprempos G, Olympios CD, Mateescu AD, Rosca M, Beladan CC, Enache R, Gurzun MM, Varga P, Calin C, Ginghina C, Popescu BA, Galrinho A, Branco L, Gomes V, Timoteo AT, Daniel P, Rodrigues I, Rosa S, Fragata J, Ferreira R, Generati G, Pellegrino M, Carbone F, Labate V, Alfonzetti E, Guazzi M, Leclercq C, Samset E, Donal E, Oraby MA, Eleraky AZ, Yossuef MA, Baptista R, Teixeira R, Ribeiro N, Oliveira AP, Barbosa A, Castro G, Martins R, Elvas L, Pego M, Gao SA, Lagerstrand KM, Johnsson ÅA, Bech-Hanssen O, Vilacosta I, Batlle Lopez E, Sanchez Sauce B, Jimenez Valtierra J, Espana Barrio E, Campuzano Ruiz R, De La Rosa Riestra A, Alonso Bello J, Perez Gonzalez F, Wan S, Sun JP, Lee AP, Bandera F, Pellegrino M, Carbone F, Labate V, Alfonzetti E, Guazzi M, Cimino S, Salatino T, Silvetti E, Mancone M, Pennacchi M, Giordano A, Sardella G, Agati L, Yesin M, Gunduz S, Gursoy MO, Astarcioglu MA, Karakoyun S, Bayam E, Cersit S, Ozkan M, Velasco Del Castillo S, Gomez Sanchez V, Anton Ladislao A, Onaindia Gandarias J, Rodriguez Sanchez I, Jimenez Melo O, Quintana Razcka O, Romero Pereiro A, Zugazabeitia Irazabal G, Braga M, Flores L, Ribeiro V, Melao F, Dias P, Maciel MJ, Bettencourt P, Mesa Rubio MD, Ruiz Ortiz M, Delgado Ortega M, Sanchez Fernandez J, Duran Jimenez E, Morenate Navio C, Romero M, Pan M, Suarez De Lezo J, Vaturi M, Weisenberg D, Monakier D, Valdman A, Vaknin- Assa H, Assali A, Kornowski R, Sagie A, Shapira Y, Ribeiras R, Abecasis J, Teles R, Castro M, Tralhao A, Horta E, Brito J, Andrade M, Mendes M, Avegliano G, Ronderos R, Matta MG, Camporrotondo M, Castro F, Albina G, Aranda A, Navia D, Siciliano M, Migliore F, Cavedon S, Folino F, Pedrizzetti G, Bertaglia M, Corrado D, Iliceto S, Badano LP, Merlo M, Stolfo D, Losurdo P, Ramani F, Barbati G, Pivetta A, Pinamonti B, Sinagra GF, Di Lenarda A, Bandera F, Pellegrino M, Labate V, Carbone F, Alfonzetti E, Guazzi M, Di Palma E, Baldini L, Verrengia M, Vastarella R, Limongelli G, Bossone E, Calabro' R, Russo MG, Pacileo G, Cruz I, Correia E, Bento D, Teles L, Lourenco C, Faria R, Domingues K, Picarra B, Marques N, Muser D, Gianfagna P, Morocutti G, Proclemer A, Gomes AC, Lopes LR, Stuart B, Caldeira D, Morgado G, Almeida AR, Canedo P, Bagulho C, Pereira H, Pardo Sanz A, Marco Del Castillo A, Monteagudo Ruiz JM, Rincon Diaz LM, Ruiz Rejon F, Casas E, Hinojar R, Fernandez-Golfin C, Zamorano Gomez JL, Erhart L, Staehli BE, Kaufmann BA, Tanner FC, Kontaraki J, Parthenakis F, Maragkoudakis S, Zacharis E, Patrianakos A, Vardas P, Domingues K, Correia E, Lopes L, Teles L, Picarra B, Magalhaes P, Faria R, Lourenco C, Azevedo O, Boulogne C, Magne J, Damy T, Martin S, Boncoeur MP, Aboyans V, Jaccard A, Saavedra Falero J, Alberca Vela MT, Molina Blazquez L, Mata Caballero R, Serrano Rosado JA, Elviro R, Di Gioia C, Fernandez Rozas I, Manzano MC, Martinez Sanchez JI, Molina M, Palma J, Werther Evaldsson A, Radegran G, Stagmo M, Waktare J, Roijer A, Meurling CJ, Righini FM, Sparla S, Di Tommaso C, Focardi M, D'ascenzi F, Tacchini D, Maccherini M, Henein M, Mondillo S, Ingvarsson A, Waktare J, Thilen U, Stagmo M, Roijer A, Radegran G, Meurling C, Jud A, Aurich M, Katus HA, Mereles D, Faber R, Pena A, Mygind ND, Suhrs HE, Zander M, Prescott E, Handoka NESRIN, Ghali MONA, Eldahshan NAHED, Ibrahim AHMED, Al-Eraky AZ, El Attar MA, Omar AS, Pelliccia A, Alvino F, Solari M, Cameli M, Focardi M, Bonifazi M, Mondillo S, Giudice CA, Assante Di Panzillo E, Castaldo D, Riccio E, Pisani A, Trimarco B, Deljanin Ilic M, Ilic S, Magda LS, Florescu M, Velcea A, Mihalcea D, Chiru A, Popescu BO, Tiu C, Vinereanu D, Hutyra M, Cechakova E, Littnerova S, Taborsky M, Lugli R, Bursi F, Fabbri M, Modena MG, Stefanelli G, Mussini C, Barbieri A, Youn HJ, O JH, Yoon HJ, Jung HO, Shin GJ, Rdzanek A, Pietrasik A, Kochman J, Huczek Z, Milewska A, Marczewska M, Szmigielski CA, Abd Eldayem SOHA, El Magd El Bohy ABO, Slee A, Peresso V, Nazir S, Sharma R, Bandera F, Pellegrino M, Labate V, Carbone F, Alfonzetti E, Guazzi M, Anton Ladislao A, Gomez Sanchez V, Cacidedo Fernandez Bobadilla A, Onaindia Gandarias JJ, Rodriguez Sanchez I, Romero Pereira A, Quintana Rackza O, Jimenez Melo O, Zugazabeitia Irazabal G, Huttin O, Venner C, Deballon R, Manenti V, Villemin T, Olivier A, Sadoul N, Juilliere Y, Selton-Suty C, Simioniuc A, Mandoli GE, Dini FL, Marzilli M, Picano E, Martin-Fernandez M, De La Hera Galarza JM, Corros-Vicente C, Leon-Aguero V, Velasco-Alonso E, Colunga-Blanco S, Fidalgo-Arguelles A, Rozado-Castano J, Moris De La Tassa C, Stelzmueller ME, Wisser W, Reichenfelser W, Mohl W, Saporito S, Mischi M, Bouwman RA, Van Assen HC, Van Den Bosch HCM, De Lepper A, Korsten HHM, Houthuizen P, Rodrigues A, Leal G, Silvestre O, Andrade J, Hjertaas JJ, Greve G, Matre K, Teixeira R, Baptista R, Barbosa A, Ribeiro N, Castro G, Martins R, Cardim N, Goncalves L, Pego M, Teixeira R, Baptista R, Barbosa A, Ribeiro N, Castro G, Martins R, Cardim N, Goncalves L, Pego M, Teixeira R, Baptista R, Barbosa A, Oliveira AP, Castro G, Martins R, Cardim N, Goncalves L, Pego M, Kouris N, Kostopoulos V, Markos L, Olympios CD, Kovacs A, Tarnoki AD, Tarnoki DL, Kolossvary M, Apor A, Maurovich-Horvat P, Jermendy G, Sengupta P, Merkely B, Viveiros Monteiro A, Galrinho A, Pereira-Da-Silva T, Moura Branco L, Timoteo A, Abreu J, Leal A, Varela F, Cruz Ferreira R, Yang LT, Tsai WC, Mpaltoumas K, Fotoglidis A, Triantafyllou K, Pagourelias E, Kassimatis E, Tzikas S, Kotsiouros G, Mantzogeorgou E, Vassilikos V, Calicchio F, Manivarmane R, Pareek N, Baksi J, Rosen S, Senior R, Lyon AR, Khattar RS, Marinescu C, Onciul S, Zamfir D, Tautu O, Dorobantu M, Carbonell San Roman A, Rincon Diez LM, Gonzalez Gomez A, Fernandez Santos S, Lazaro Rivera C, Moreno Vinues C, Sanmartin Fernandez M, Fernandez-Golfin C, Zamorano Gomez JL, Alirezaei T, Karimi AS, Kakiouzi V, Felekos I, Panagopoulou V, Latsios G, Karabela M, Petras D, Tousoulis D, Abid L, Abid D, Kammoun S, Ben Kahla S, Lee JW, Martin Fernandez M, Costilla Garcia SM, Diaz Pelaez E, Moris De La Tassa C. Poster session 3The imaging examinationP646Simulator-based testing of skill in transthoracic echoP647Clinical and echocardiographic characteristics of isolated left ventricular non-compactionP648Appropriate use criteria of transthoracic echocardiography and its clinical impact in an aged populationAnatomy and physiology of the heart and great vesselsP649Prevalence and determinants of exercise oscillatory ventilation in the EUROEX trial populationAssessment of diameters, volumes and massP650Left atrial remodeling after percutaneous left atrial appendage closureP651Global atrial performance with tyrosine kinase inhibitors in metastatic renal cell carcinomaP652Early right ventricular response to cardiac resynchronization therapy: impact on clinical outcomesP653Parameters of speckle-tracking echocardiography and biomechanical values of a dilative ascending aortaAssessments of haemodynamicsP654Right atrial hemodynamics in infants and children: observations from 3-dimensional echocardiography derived right atrial volumesAssessment of systolic functionP655One-point carotid wave intensity predicts cardiac mortality in patients with congestive heart failure and reduced ejection fractionP656Persistence of cardiac remodeling in adolescents with previous fetal growth restrictionP6572D speckle tracking-derived left ventricle global longitudinal strain and left ventricular dysfunction stages: a useful discriminator in moderate-to-severe aortic regurgitationP658Global longitudinal strain and strain rate in type two diabetes patients with chronic heart failure: relevance to circulating osteoprotegerinP659Analysis of left ventricular function in patients before and after surgical and interventional mitral valve therapyP660Left ventricular end-diastolic volume is complementary with global longitudinal strain for the prediction of left ventricular ejection fraction in echocardiographic daily practiceP661Left ventricular assist device, right ventricle function, and selection bias: the light side of the moonP662Assessment of right ventricular function in patients with anterior ST elevation myocardial infarction; a 2-d speckle tracking studyP663Right ventricular systolic function assessment in sickle cell anaemia using echocardiographyAssessment of diastolic functionP664Prognostic value of transthoracic cardiopulmonary ultrasound in cardiac surgery intensive care unitP665Comparative efficacy of renin-angiotensin system modulators on prognosis, right heart and left atrial parameters in patients with chronic heart failure and preserved left ventricular systolic functionP666Left atrial volume index is the most significant diastolic functional parameter of hemodynamic burden as measured by NT-proBNP in acute myocardial infarctionP667Preventive echocardiographic screening. preliminary dataP668Assessment of the atrial electromechanical delay and the mechanical functions of the left atrium in patients with diabetes mellitus type IIschemic heart diseaseP669Coronary flow velocity reserve by echocardiography as a measure of microvascular function: feasibility, reproducibility and agreement with PET in overweight patients with coronary artery diseaseP670Influence of cardiovascular risk in the occurrence of events in patients with negative stress echocardiographyP671Prevalence of transmural myocardial infarction and viable myocardium in chronic total occlusion (CTO) patientsP672The impact of the interleukin 6 receptor antagonist tocilizumab on mircovascular dysfunction after non st elevation myocardial infarction assessed by coronary flow reserve from a randomized studyP673Impact of manual thrombus aspiration on left ventricular remodeling: the echocardiographic substudy of the randomized Physiologic Assessment of Thrombus Aspirtion in patients with ST-segment ElevatioP674Acute heart failure in STEMI patients treated with primary percutaneous coronary intervention is related to transmural circumferential myocardial strainP675Long-term prognostic value of infarct size as assessed by cardiac magnetic resonance imaging after a first st-segment elevation myocardial infarctionHeart valve DiseasesP676Prognostic value of LV global longitudinal strain in aortic stenosis with preserved LV ejection fractionP677Importance of longitudinal dyssynchrony in low flow low gradient severe aortic stenosis patients undergoing dobutamine stress echocardiography. a multicenter study (on behalf of the HAVEC group)P678Predictive value of left ventricular longitudinal strain by 2D Speckle Tracking echocardiography, in asymptomatic patients with severe aortic stenosis and preserved ejection fractionP679Clinical and echocardiographic characteristics of the flow-gradient patterns in patients with severe aortic stenosis and preserved left ventricular ejection fractionP6802D and 3D speckle tracking assessment of left ventricular function in severe aortic stenosis, a step further from biplane ejection fractionP681Functional evaluation in aortic stenosis: determinant of exercise capacityP682Left ventricular mechanics: novel tools to evaluate left ventricular function in patients with primary mitral regurgitationP683Plasma B-type natriuretic peptide level in patients with isolated rheumatic mitral stenosisP684Quantitative assessment of severity in aortic regurgitation and the influence of elastic proprieties of thoracic aortaP685Characterization of chronic aortic and mitral regurgitation using cardiovascular magnetic resonanceP686Functional mitral regurgitation: a warning sign of underlying left ventricular systolic dysfunction in heart failure with preserved ejection fraction.P687Secondary mitral valve tenting in primary degenerative prolapse quantified by three-dimensional echocardiography predicts regurgitation recurrence after mitral valve repairP688Advanced heart failure with reduced ejection fraction and severe mitral insufficiency compensate with a higher oxygen peripheral extraction to a reduced cardiac output vs oxygen uptake response to maxP689Predictors of acute procedural success after percutaneous mitraclip implantation in patients with moderate-to-severe or severe mitral regurgitation and reduced ejection fractionP690The value of transvalvular gradients obtained by transthoracic echocardiography in estimation of severe paravalvular leakage in patients with mitral prosthetic valvesP691Characteristics of infective endocarditis in a non tertiary hospitalP692Infective endocarditis: predictors of severity in a 3-year retrospective analysisP693New echocardiographic predictors of early recurrent mitral functional regurgitation after mitraclip implantationP694Transesophageal echocardiography can be reliably used for the allocation of patients with severe aortic stenosis for tras-catheter aortic valve implantationP695Annular sizing for transcatheter aortic valve selection. A comparison between computed tomography and 3D echocardiographyP696Association between aortic dilatation, mitral valve prolapse and atrial septal aneurysm: first descriptive study.CardiomyopathiesP698Cardiac resynchronization therapy by multipoint pacing improves the acute response of left ventricular mechanics and fluid dynamics: a three-dimensional and particle image velocimetry echo studyP699Long-term natural history of right ventricular function in dilated cardiomyopathy: innocent bystander or leading actor?P700Right to left ventricular interdependence at rest and during exercise assessed by the ratio between pulmonary systolic to diastolic time in heart failure reduced ejection fractionP701Exercise strain imaging demonstrates impaired right ventricular contractile reserve in patients with hypertrophic cardiomyopathyP702Prevalence of overt left ventricular dysfunction (burn-out phase) in a portuguese population of hypertrophic cardiomyopathy, a multicentre studyP703Systolic and diastolic myocardial mechanics in hypertrophic cardiomyopathy and their link to the extent of hypertrophy, replacement fibrosis and interstitial fibrosisP704Multimodality imaging and genotype-phenotype associations in a cohort of patients with hypertrophic cardiomyopathy studied by next generation sequencing and cardiac magnetic resonanceP705Sudden cardiac death risk assessment in apical hypertrophic cardiomyopathy: do we need to add MRI to the equation?P706Prognostic value of left ventricular ejection fraction, proBNP, exercise capacity, and NYHA functional class in patients with left ventricular non-compaction cardiomyopathyP707The anti-hypertrophic microRNAs miR-1, miR-133a and miR-26b and their relationship to left ventricular hypertrophy in patients with essential hypertensionP708Prevalence of left ventricular systolic dysfunction in a portuguese population of left ventricular non-compaction cardiomyopathy, a multicentre studyP709Assessment of systolic and diastolic features in light chain amyloidosis: an echocardiographic and cardiac magnetic resonance studyP710Morbid obesity-associated hypertension identifies bariatric surgery best responders: Clinical and echocardiographic follow up studyP711Echocardiographic markera for overhydration in patients under haemodialysisP712Gender aspects of right ventricular size and function in clinically stable heart transplant patientsP713Evidence of cardiac stem cells from the left ventricular apical tip in patients undergone LVAD implant: a comparative strain-ultrastructural studySystemic diseases and other conditionsP714Speckle tracking assessment of right ventricular function is superior for differentiation of pressure versus volume overloaded right ventricleP715Prognostic value of pulmonary arterial pressure: analysis in a large dataset of timely matched non-invasive and invasive assessmentsP716Effect of the glucagon-like peptide-1 analogue liraglutide on left ventricular diastolic and systolic function in patients with type 2 diabetes: a randomised, single-blinded, crossover pilot studyP717Tissue doppler evaluation of left ventricular functions, left atrial mechanical functions and atrial electromechanical delay in juvenile idiopathic arthritisP718Echocardiographic detection of subclinical left ventricular dysfunction in patients with rheumatoid arthritisP719Left ventricular strain values are unaffected by intense training: a longitudinal, speckle-tracking studyP720Diastolic left ventricular function in autosomal dominant polycystic kidney disease: a matched-cohort, speckle-tracking echocardiographic studyP721Relationship between adiponectin level and left ventricular mass and functionP722Left atrial function is impaired in patients with multiple sclerosisMasses, tumors and sources of embolismP723Paradoxical embolization to the brain in patients with acute pulmonary embolism and confirmed patent foramen ovale with bidirectional shunt, results of prospective monitoringP724Following the European Society of Cardiology proposed echocardiographic algorithm in elective patients with clinical suspicion of infective endocarditis: diagnostic yield and prognostic implicationsP725Metastatic cardiac18F-FDG uptake in patients with malignancy: comparison with echocardiographic findingsDiseases of the aortaP726Echocardiographic measurements of aortic pulse wave velocity correlate well with invasive methodP727Assessment of increase in aortic and carotid intimal medial thickness in adolescent type 1 diabetic patientsStress echocardiographyP728Determinants and prognostic significance of heart rate variability in renal transplant candidates undergoing dobutamine stress echocardiographyP729Pattern of cardiac output vs O2 uptake ratio during maximal exercise in heart failure with reduced ejection fraction: pathophysiological insightsP730Prognostic value and predictive factors of cardiac events in patients with normal exercise echocardiographyP731Right ventricular mechanics during exercise echocardiography: normal values, feasibility and reproducibility of conventional and new right ventricular function parametersP732The added value of exercise-echo in heart failure patients: assessing dynamic changes in extravascular lung waterP733Applicability of appropriate use criteria of exercise stress echocardiography in real-life practice: what have we improved with new documents?Transesophageal echocardiographyP7343D-TEE guidance in percutaneous mitral valve interventions correcting mitral regurgitationContrast echocardiographyP735Pulmonary transit time by contrast enhanced ultrasound as parameter for cardiac performance: a comparison with magnetic resonance imaging and NT-ProBNPReal-time three-dimensional TEEP736Optimal parameter selection for anisotropic diffusion denoising filters applied to aortic valve 4d echocardiographsP737Left ventricle systolic function in non-alcoholic cirrhotic candidates for liver transplantation: a three-dimensional speckle-tracking echocardiography studyTissue Doppler and speckle trackingP738Optimizing speckle tracking echocardiography strain measurements in infants: an in-vitro phantom studyP739Usefulness of vascular mechanics in aortic degenerative valve disease to estimate prognosis: a two dimensional speckle tracking studyP740Vascular mechanics in aortic degenerative valve disease: a two dimensional speckle-tracking echocardiography studyP741Statins and vascular load in aortic valve disease patients, a speckle tracking echocardiography studyP742Is Left Bundle Branch Block only an electrocardiographic abnormality? Study of LV function by 2D speckle tracking in patients with normal ejection fractionP743Dominant inheritance of global longitudinal strain in a population of healthy and hypertensive twinsP744Mechanical differences of left atria in paroxysmal atrial fibrillation: A speckle-tracking study.P745Different distribution of myocardial deformation between hypertrophic cardiomyopathy and aortic stenosisP746Left atrial mechanics in patients with chronic renal failure. Incremental value for atrial fibrillation predictionP747Subclinical myocardial dysfunction in cancer patients: is there a direct effect of tumour growth?P748The abnormal global longitudinal strain predicts significant circumflex artery disease in low risk acute coronary syndromeP7493D-Speckle tracking echocardiography for assessing ventricular funcion and infarct size in young patients after acute coronary syndromeP750Evaluation of left ventricular dyssynchrony by echocardiograhy in patients with type 2 diabetes mellitus without clinically evident cardiac diseaseP751Differences in myocardial function between peritoneal dialysis and hemodialysis patients: insights from speckle tracking echoP752Appraisal of left atrium changes in hypertensive heart disease: insights from a speckle tracking studyP753Left ventricular rotational behavior in hypertensive patients: Two dimensional speckle tracking imaging studyComputed Tomography & Nuclear CardiologyP754Effectiveness of adaptive statistical iterative reconstruction of 64-slice dual-energy ct pulmonary angiography in the patients with reduced iodine load: comparison with standard ct pulmonary angiograP755Clinical prediction model to inconclusive result assessed by coronary computed tomography angiography. Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kostic J, Orlic D, Stankovic G, Popovic D, Bajcetic M, Puka N, Zaletel I, Zlatic N, Labudovic-Borovic M. Presence of early endothelial cells in aspirated coronary thrombi from patients with ST-elevation myocardial infarction - their association with angiographic outcomes. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.1002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Jeremic V, Stojkovic S, Dobric M, Vukcevic V, Orlic D, Cvorovic I, Vasiljevic-Pokrajcic Z. P520Percutaneous coronary intervention for chronic total occlusions of coronary arteries: procedural characteristics and long-term clinical outcomes. Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu091.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Zivkovic M, Vukcevic V, Ninkovic O, Milasinovic D, Mehmedbegovic Z, Dedovic V, Tesic M, Dobric M, Orlic D, Stankovic G. Final kissing balloon inflation does not improve long-term clinical outcome in patients with true bifurcation lesions treated with provisional stenting. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p3033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Dedovic V, Zivkovic I, Mehmedbegovic Z, Zivkovic M, Milasinovic D, Orlic D, Antonijevic N, Vukcevic V, Asanin M, Stankovic G. Does mean platelet volume and platelet distribution width predict inadequate myocardial reperfision in primary percutaneous coronary intervention? Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Orlic D, Ostojic M, Beleslin B, Tesic M, Sobic-Saranovic D, Stojkovic S, Vukcevic V, Stepanovic J, Nedeljkovic M, Stankovic G. Quantitative assessment of microcirculatory resistance in infarct-related and non-infarct-related coronary arteries in patients with ST-segment elevation myocardial infarction tretaed with primary PCI. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Orlic D, Ostojic M, Beleslin B, Sobic-Saranovic D, Tesic M, Vukcevic V, Stojkovic S, Dobric M, Nedeljkovic M, Stankovic G. The randomized physiologic assessment of thrombus aspirtion in patients with ST-segment Elevation acute Myocardial Infarction trial (PATA STEMI). Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Mehmedbegovic Z, Janicijevic A, Dedovic V, Zivkovic M, Milasinovic D, Dobric M, Vukcevic V, Orlic D, Asanin M, Stankovic G. Primary percutaneous coronary intervention for acute coronary syndrome due to stent thrombosis. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Beleslin B, Ostojic M, Djordjevic-Dikic A, Vukcevic V, Stojkovic S, Nedeljkovic M, Stankovic G, Orlic D, Milic N, Stepanovic J, Giga V, Saponjski J. The value of fractional and coronary flow reserve in predicting myocardial recovery in patients with previous myocardial infarction. Eur Heart J 2008; 29:2617-24. [DOI: 10.1093/eurheartj/ehn418] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Orlic D, Smerdelj M, Kolundzic R, Bergovec M. Lower limb salvage surgery: modular endoprosthesis in bone tumour treatment. Int Orthop 2006; 30:458-64. [PMID: 16896869 PMCID: PMC3172742 DOI: 10.1007/s00264-006-0193-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2006] [Revised: 05/25/2006] [Accepted: 05/29/2006] [Indexed: 11/24/2022]
Abstract
We retrospectively analysed 90 patients who underwent "en bloc" resection and modular endoprosthesis reconstruction in the lower limbs between 1987-2003. After proximal femur resection, reconstruction was performed with a modular endoprosthesis by Howmedica (KFTR, designed by Kotz) and modular revision endoprosthesis by W. Link or Lima-Lto (Revision system, designed by Wagner). The knee joint was reconstructed with a modular endoprosthesis (Howmedica, KFTR designed by Kotz) after distal femur or proximal tibia resection. Malignant bone tumours were present in 58 patients (64.5%), benign tumours in 16 (17.8%), metastases in 8 (8.9%), tumour-like lesions in 4 (4.4 %) and non-tumour-related destruction of the femur in 4 patients (4.4%). High-grade tumours were found in the majority of malignant bone tumours (70.7%). Treatment complications, which occurred in 26 patients, were: local recurrence of the tumour, deep infection, acetabular destruction following hemiarthroplasty, recurrent dislocations of endoprosthesis, periprosthetic fracture and hardware problems. In total, 23 patients (25.6%) died due to tumours. Endoprostheses should be considered as a treatment of choice for bone tumours in the hip and knee joint region. Advances in limb salvage surgery are, and will long continue to be, a great challenge for orthopaedic oncologists of the 21st century.
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Affiliation(s)
- D. Orlic
- Department of Orthopaedic Surgery, Clinical Hospital Centre Zagreb and Zagreb University School of Medicine, Salata 6, 10000 Zagreb, Croatia
| | - M. Smerdelj
- Department of Orthopaedic Surgery, Clinical Hospital Centre Zagreb and Zagreb University School of Medicine, Salata 6, 10000 Zagreb, Croatia
| | - R. Kolundzic
- Department of Orthopaedic Surgery, Clinical Hospital Centre Zagreb and Zagreb University School of Medicine, Salata 6, 10000 Zagreb, Croatia
| | - M. Bergovec
- Department of Orthopaedic Surgery, Clinical Hospital Centre Zagreb and Zagreb University School of Medicine, Salata 6, 10000 Zagreb, Croatia
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Abstract
Adult BM stem cells are being investigated for their potential to regenerate injured tissues by a process referred to as plasticity or transdifferentiation. Although data supporting stem cell plasticity is extensive, a controversy has emerged based on findings that propose cell-cell fusion as a more appropriate interpretation for this phenomenon. A major focus of this controversy is the claim that acutely infarcted myocardium in adult hearts can be regenerated by BM stem cells. Many researchers consider the adult heart to be a post-mitotic organ, whereas others believe that a low level of cardiomyocyte renewal occurs throughout life. If renewal occurs, it may be in response to cardiac stem cell activity or to stem cells that migrate from distant tissues. Post-mortem microscopic analysis of experimentally induced myocardial infarctions in several rodent models suggests that cardiomyocyte renewal is achieved by stem cells that infiltrate the damaged tissue. For a better understanding of the possible involvement of stem cells in myocardial regeneration, it is important to develop appropriate technologies to monitor myocardial repair over time with an emphasis on large animal models. Studies on non-human primate, swine and canine models of acute myocardial infarctions would enable investigators to utilize clinical quality cell-delivery devices, track labeled donor cells after precision transplantation and utilize non-invasive imaging for functional assays over time with clinical accuracy. In addition, if stem cell plasticity is to reach the next level of acceptance, it is important to identify the environmental cues needed for stem cell trafficking and to define the genetic and cellular mechanisms that initiate transdifferentiation. Only then will it be possible to determine if, and to what extent, BM stem cells are involved in myocardial regeneration and to begin to regulate precisely tissue repair.
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Affiliation(s)
- D Orlic
- Cardiovascular Branch, National Heart Lung and Blood Institute, NIH, Bethesda, Maryland 20892-1454, USA
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Mikhail GW, Airoldi F, Tavano D, Chieffo A, Rogacka R, Carlino M, Montorfano M, Sangiorgi G, Corvaja N, Michev I, Orlic D, Di Mario C, Colombo A. The use of drug eluting stents in single and multivessel disease: results from a single centre experience. Heart 2004; 90:990-4. [PMID: 15310680 PMCID: PMC1768404 DOI: 10.1136/hrt.2003.028795] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
OBJECTIVE Drug eluting stents have been shown to reduce the rate of in-stent restenosis in cases where single lesions are treated. The performance of these stents, in patients with multivessel disease and complex lesions, however, remains unknown. Our experience with sirolimus eluting stents in such patients is presented. DESIGN AND PATIENTS This study includes all consecutive patients treated at San Raffaele Hospital and EMO Centro Cuore Columbus, Milan, Italy treated with sirolimus eluting stents. RESULTS Between April 2002 and March 2003, 486 patients with 1027 lesions were treated (437 males, 49 females) with a mean (SD) age of 62.2 (10.5) years. Of all patients studied, 19.1% had single vessel disease, 33.8% had two vessel disease, and 47.1% had three vessel disease. Of the whole study group, 20.3% of patients had diabetes mellitus. A mean (SD) of 2.3 (0.4) stents per patient and 1.1 (0.2) stents per lesion were implanted. The baseline mean reference diameter was 2.7 (0.6) mm with a mean minimal luminal diameter of 0.9 (0.5) mm. Post-stenting, the acute gain was 1.8 (0.6) mm. During hospital stay one patient died (0.2%) and 13 (2.7%) patients had in-hospital myocardial infarction (MI). One patient required urgent repeat percutaneous coronary intervention. Six months clinical follow up was performed in all 347 eligible patients. Six months mortality was 2.0% (n = 7) and acute MI occurred in 0.3% (n = 1). Target lesion revascularisation occurred in 9.5% (n = 33) of the patients and target vessel revascularisation (TVR) in 11.5% (n = 40) of the patients. Major adverse cardiac event rate was 13.8% (n = 48). TVR was 4.5% for single vessel disease and 13.2% for multivessel disease. Diabetes mellitus was the only significant predictor for TVR. CONCLUSION The use of drug eluting stents in single and multivessel coronary disease produces good short and medium term results with a low rate of revascularisation. Longer term follow-up is required to confirm these observations.
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Affiliation(s)
- G W Mikhail
- San Raffaele Hospital and EMO Centro Cuore Columbus, Milan, Italy
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21
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Kapetanov M, Orlic D, Potkonjak D, Lazic S. Clinical and laboratory investigation of experimentaly infected broilers with CIAV. Zb Mat srp prir nauk 2004. [DOI: 10.2298/zmspn0417065k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Chicken infectious anemia (CIA) is widespread viral disease in countries with the intensive poultry industry. In susceptible birds CIAV causes anemia subcutaneous and intramuscular hemorrhages, lymphoid tissue atrophy immunosuppression, cachexia and increased mortality. Protection of progeny relies not only on age resistance but also on maternally delivered antibodies (Mabs) so possessing the information on level and persistence of Mabs is of great significance. In our study experimental infection with CIAV was performed on one and seven days old broiler chickens from naturally infected parent flock during the rearing period. In infected birds, clinical signs hematological findings and humoral immune response were examined. After euthanasia, we looked for specific pathomorphological and histopathological changes that indicate the presence of CIAV infection. In all one and seven days old chickens maternally derived antibodies were established. No clinical signs of CIA were observed, hematological findings showed no deviation from referent values, and there were no specific pathomorphological and histopathological changes at postmortem examination. According to previous knowledge, only serological negative flock if infected in time of laying represent risk for vertical transmission to progeny where typical disease with mortality will appear. The absence of Mabs in one day old chickens is critical point in break of disease. Typical clinical picture in day old chickens rises only when vertical transmission occurs.
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Affiliation(s)
| | - Dusan Orlic
- Naučni institut za veterinarstvo 'Novi Sad', Novi Sad
| | | | - Sava Lazic
- Naučni institut za veterinarstvo 'Novi Sad', Novi Sad
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Affiliation(s)
- D Orlic
- Genetics and Molecular Biology Branch, National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA
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Darabus G, Tibru I, Orlic D, Cosaroaba I, Oprescu I. Effect of humidity on the life cycle and reproduction of Dermacentor reticulatus (Ixodidae) in laboratory mice. Zb Mat srp prir nauk 2003. [DOI: 10.2298/zmspn0305095d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The reproductive cycle of Dermacentor reticulatus (Ixodidae) is described in this paper. Experimental infestation was carried out on immobilized (fixed) RAP mice and those that could move freely. Dermacentor reticulatus (D. pictus) larvae, nymphs and adults were obtained from eggs placed in glass test tubes in two variants: dry medium (T? = 28-30?C, R.H. = 49-51%) and wet medium (T? = 28-31?C, R.H. = 94-95%). In the mice that were experimentally infested with the eggs incubated in wet medium, there were more fixed larvae that came off after sucking (8-786 larvae) compared with 0-7 larvae that were observed in the mice that could move freely. At the same time, more larvae were attached to the immobilized mice (2-786) compared with the number of larvae observed in the mice that could move freely (0-11). Infestation was not registered in the experimental animals that could move freely when the larvae were incubated in the dry medium. Experimental infestation with Dermacentor reticulatus failed in the RAP mice. The infested mice tolerated as much as 786 Dermacentor reticulatus larvae, but they died when 12-30 nymphs were fed on them.
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Affiliation(s)
- Gh. Darabus
- Faculty of Veterinary Medicine, Timisoara, Romania
| | - I. Tibru
- Faculty of Veterinary Medicine, Timisoara, Romania
| | - Dusan Orlic
- Veterinarski naučni institut 'Novi Sad', Novi Sad
| | - I. Cosaroaba
- Faculty of Veterinary Medicine, Timisoara, Romania
| | - I. Oprescu
- Faculty of Veterinary Medicine, Timisoara, Romania
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Orlic D, Kapetanov M, Kovacevic M, Velhner M, Stojanovic D. Occurrence of infectious laringotracheitis on farms in Vojvodina. VET GLASNIK 2003. [DOI: 10.2298/vetgl0302031o] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
For over 10 years infectious laringotracheitis has occurred rarely in Vojvodina. In such situations morbidity was 40% and mortality was 16%. Drop in egg production was over 30% and after 4 weeks egg production returned to normal. After the disappearance of clinical symptoms and after 30 days of quarantine and disinfection of eggs with formaldehyde and 5% hydrogen peroxide there was no appearance of the disease in hatched chickens. Clinical observation and pathohistology results are valuable proof for diagnosis of ILT. Diagnosis of ILT should be confirmed by virus isolation or applying serological tests such as ELISA on sera from diseased chickens.
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Affiliation(s)
- Dusan Orlic
- Naučni institut za veterinarstvo "Novi Sad", Novi Sad
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Nedeljkovic MA, Ostojic M, Beleslin B, Nedeljkovic IP, Stankovic G, Stojkovic S, Saponjski J, Babic R, Vukcevic V, Ristic AD, Orlic D. Dipyridamole-atropine-induced myocardial infarction in a patient with patent epicardial coronary arteries. Herz 2001; 26:485-8. [PMID: 11765483 DOI: 10.1007/pl00002053] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND The diagnostic accuracy of the physical and pharmacological stress echocardiography tests is higher than routine exercise electrocardiography. They have an acceptable safety profile and have been rarely associated with severe adverse effects. CASE REPORT We present a case of acute anterior myocardial reinfarction immediately after exercise and pharmacological (dipyridamole-atropine) stress echocardiography testing 1 month after successful stent implantation in LAD. Our patient was a 43-year-old man with a history of heavy smoking and hypertension. Remarkably, the stress echocardiogram was non-diagnostic few hours before the infarction occurred. Angiography performed 4 months after the reinfarction revealed neither a culprit lesion nor stent thrombosis. CONCLUSION Aggressive "last generation" pharmacological stress testing may provide optimal diagnostic accuracy, but as in our case, complications may occur, even after negative stress testing. To our knowledge, this is the first reported case of an acute myocardial infarction as a severe complication of stress testing, which developed in a patient after stent implantation.
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Affiliation(s)
- M A Nedeljkovic
- University Institute for Cardiovascular Diseases, Department for Diagnostic and Catheterization Laboratories, Clinical Center of Serbia, Belgrade, Yugoslavia
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26
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Orlic D, Kajstura J, Chimenti S, Limana F, Jakoniuk I, Quaini F, Nadal-Ginard B, Bodine DM, Leri A, Anversa P. Mobilized bone marrow cells repair the infarcted heart, improving function and survival. Proc Natl Acad Sci U S A 2001; 98:10344-9. [PMID: 11504914 PMCID: PMC56963 DOI: 10.1073/pnas.181177898] [Citation(s) in RCA: 1443] [Impact Index Per Article: 62.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2001] [Indexed: 12/31/2022] Open
Abstract
Attempts to repair myocardial infarcts by transplanting cardiomyocytes or skeletal myoblasts have failed to reconstitute healthy myocardium and coronary vessels integrated structurally and functionally with the remaining viable portion of the ventricular wall. The recently discovered growth and transdifferentiation potential of primitive bone marrow cells (BMC) prompted us, in an earlier study, to inject in the border zone of acute infarcts Lin(-) c-kit(POS) BMC from syngeneic animals. These BMC differentiated into myocytes and vascular structures, ameliorating the function of the infarcted heart. Two critical determinants seem to be required for the transdifferentiation of primitive BMC: tissue damage and a high level of pluripotent cells. On this basis, we hypothesized here that BMC, mobilized by stem cell factor and granulocyte-colony stimulating factor, would home to the infarcted region, replicate, differentiate, and ultimately promote myocardial repair. We report that, in the presence of an acute myocardial infarct, cytokine-mediated translocation of BMC resulted in a significant degree of tissue regeneration 27 days later. Cytokine-induced cardiac repair decreased mortality by 68%, infarct size by 40%, cavitary dilation by 26%, and diastolic stress by 70%. Ejection fraction progressively increased and hemodynamics significantly improved as a consequence of the formation of 15 x 10(6) new myocytes with arterioles and capillaries connected with the circulation of the unaffected ventricle. In conclusion, mobilization of primitive BMC by cytokines might offer a noninvasive therapeutic strategy for the regeneration of the myocardium lost as a result of ischemic heart disease and, perhaps, other forms of cardiac pathology.
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Affiliation(s)
- D Orlic
- Cardiovascular Research Institute, Department of Medicine, New York Medical College, Valhalla, NY 10595, USA
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Brümmendorf TH, Orlic D, Sharkis SJ, Kanz L. Meeting summary: International Symposium and Workshop on Hematopoietic Stem Cells III, University of Tübingen, Germany, September 14-16, 2000. Exp Hematol 2001; 29:797-802. [PMID: 11438201 DOI: 10.1016/s0301-472x(01)00664-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- T H Brümmendorf
- Department of Hematology, Oncology and Immunology, University Medical Center II, Tübingen, Germany
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Abstract
Occlusion of the anterior descending left coronary artery leads to ischemia, infarction, and loss of function in the left ventricle. We have studied the repair of infarcted myocardium in mice using highly enriched stem/progenitor cells from adult bone marrow. The left coronary artery was ligated and 5 hours later Lin- c-kit+ bone marrow cells obtained from transgenic male mice expressing enhanced green fluorescent protein (EGFP) were injected into the healthy myocardium adjacent to the site of the infarct. After 9 days the damaged hearts were examined for regenerating myocardium. A band of new myocardium was observed in 12 surviving mice. The developing myocytes were small and resembled fetal and neonatal myocytes. They were positive for EGFP, Y chromosome, and several myocyte-specific proteins including cardiac myosin, and the transcription factors GATA-4, MEF2, and Csx/Nkx2.5. The cells were also positive for connexin 43, a gap junction/intercalated disc component indicating the onset of intercellular communication. Myocyte proliferation was demonstrated by incorporation of BrdU into the DNA of dividing cells and by the presence of the cell cycle-associated protein K167 in their nuclei. Neo-vascularization was also observed in regenerating myocardium. Endothelial and smooth muscle cells in developing capillaries and small arterioles were EGFP-positive. These cells were positive for Factor VIII and alpha smooth muscle actin, respectively. No myocardial regeneration was observed in damaged hearts transplanted with Lin- c-kit- bone marrow cells, which lack bone marrow-regenerating activity. Functional competence of the repaired left ventricle was improved for several hemodynamic parameters. These in vivo findings demonstrate the capacity of highly enriched Lin- c-kit+ adult bone marrow cells to acutely regenerate functional myocardium within an infarcted region.
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Affiliation(s)
- D Orlic
- Hematopoiesis Section, Genetics and Molecular Biology Branch, National Human Genome Research Institute, NIH, Building 49, Room 3W16, 49 Convent Drive, Bethesda, Maryland 20892, USA.
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Orlic D, Kajstura J, Chimenti S, Jakoniuk I, Anderson SM, Li B, Pickel J, McKay R, Nadal-Ginard B, Bodine DM, Leri A, Anversa P. Bone marrow cells regenerate infarcted myocardium. Nature 2001; 410:701-5. [PMID: 11287958 DOI: 10.1038/35070587] [Citation(s) in RCA: 3527] [Impact Index Per Article: 153.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Myocardial infarction leads to loss of tissue and impairment of cardiac performance. The remaining myocytes are unable to reconstitute the necrotic tissue, and the post-infarcted heart deteriorates with time. Injury to a target organ is sensed by distant stem cells, which migrate to the site of damage and undergo alternate stem cell differentiation; these events promote structural and functional repair. This high degree of stem cell plasticity prompted us to test whether dead myocardium could be restored by transplanting bone marrow cells in infarcted mice. We sorted lineage-negative (Lin-) bone marrow cells from transgenic mice expressing enhanced green fluorescent protein by fluorescence-activated cell sorting on the basis of c-kit expression. Shortly after coronary ligation, Lin- c-kitPOS cells were injected in the contracting wall bordering the infarct. Here we report that newly formed myocardium occupied 68% of the infarcted portion of the ventricle 9 days after transplanting the bone marrow cells. The developing tissue comprised proliferating myocytes and vascular structures. Our studies indicate that locally delivered bone marrow cells can generate de novo myocardium, ameliorating the outcome of coronary artery disease.
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Affiliation(s)
- D Orlic
- Hematopoiesis Section, Genetics and Molecular Biology Branch, NHGRI, NIH, Bethesda, MD 20892, USA
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30
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Barrette S, Orlic D. Alternative viral envelopes for oncoretroviruses to increase gene transfer into hematopoietic stem cells. Curr Opin Mol Ther 2000; 2:507-14. [PMID: 11249753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
The hematopoietic stem cell is the target for gene therapy of human blood disease. Low retroviral receptors for the commonly used vectors and quiescence of hematopoietic stem cells are believed to be major obstacles to the success of gene therapy. The development of new stem cell assays has allowed better understanding of the biology and phenotype of hematopoietic stem cells, leading to selection of highly enriched populations of hematopoietic stem cells. Quantitation of retrovirus receptors on these enriched populations of hematopoietic stem cells has resulted in the identification of subpopulations of cells expressing high levels of retrovirus receptors. New promising retrovirus envelopes are being developed. In this review, we discuss those issues that may help to resolve the problem of low gene transfer efficiency into human hematopoietic stem cells.
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Affiliation(s)
- S Barrette
- Hematopoiesis Section/NHGRI/NIH, Building 49, 49 Convent Drive, Bethesda, MD 20892, USA
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Bodine DM, Barrette S, Seidel N, Orlic D, Miller AD. Transduction of mouse hematopoietic stem cells is more efficient with 10A1 retrovirus vectors than with amphotropic vectors. Stem Cells 2000; 18:152-3. [PMID: 10742390 DOI: 10.1634/stemcells.18-2-152] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Orlic D, Farese A, Anderson S, MacVittie T, Bodine D. Expansion of rhesus monkey hematopoietic stem cells in response to administration of chimeric leridistim or progenipoietin (Pro-gp). Exp Hematol 2000. [DOI: 10.1016/s0301-472x(00)00379-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Barrette S, Douglas J, Orlic D, Anderson SM, Seidel NE, Miller AD, Bodine DM. Superior transduction of mouse hematopoietic stem cells with 10A1 and VSV-G pseudotyped retrovirus vectors. Mol Ther 2000; 1:330-8. [PMID: 10933951 DOI: 10.1006/mthe.2000.0052] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The inefficient transduction of human hematopoietic stem cells (HSC) with amphotropic retroviral vectors has been an obstacle to gene therapy for hematopoietic diseases. We have previously reported low levels of amphotropic retrovirus receptor (Pit-2) mRNA and higher levels of gibbon ape leukemia virus (GALV) or 10A1 retrovirus receptor (Pit-1) mRNA in mouse and human HSC. The vesicular stomatitis virus (VSV-G) uses an abundant membrane phospholipid as a receptor. We hypothesized that transduction of HSC requires relatively high levels of retrovirus receptor molecules. Because mouse HSC can be efficiently transduced by ecotropic virus through the abundant ecotropic receptor, the mouse is an ideal model to compare receptor levels and transduction. We have developed a cotransduction assay where ecotropic retrovirus transduction is a positive internal control for downstream steps in retrovirus transduction. A comparison of mouse HSC transduction with amphotropic, 10A1, and VSV-G envelopes showed that the level of amphotropic and 10A1 receptor mRNA in HSC correlated with the frequency of transduction. Transduction with VSV-G vectors was similar to that with 10A1 vectors. We conclude that the level of retrovirus receptor on HSC is critical for HSC transduction and that GALV or VSV-G vectors would be better for human HSC transduction.
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Affiliation(s)
- S Barrette
- Genetics and Molecular Biology Branch, National Human Genome Research Institute, National Institute of Health, Bethesda, Maryland 20892, USA
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Castilla LH, Garrett L, Adya N, Orlic D, Dutra A, Anderson S, Owens J, Eckhaus M, Bodine D, Liu PP. The fusion gene Cbfb-MYH11 blocks myeloid differentiation and predisposes mice to acute myelomonocytic leukaemia. Nat Genet 1999; 23:144-6. [PMID: 10508507 DOI: 10.1038/13776] [Citation(s) in RCA: 236] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Horwitz ME, Malech HL, Anderson SM, Girard LJ, Bodine DM, Orlic D. Granulocyte colony-stimulating factor mobilized peripheral blood stem cells enter into G1 of the cell cycle and express higher levels of amphotropic retrovirus receptor mRNA. Exp Hematol 1999; 27:1160-7. [PMID: 10390191 DOI: 10.1016/s0301-472x(99)00049-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We compared the cell cycle status and expression of mRNA for the amphotropic retroviral receptor in hematopoietic stem cells isolated from bone marrow and cytokine mobilized peripheral blood. CD34+ cells from six normal volunteers were enriched by immune selection from steady-state bone marrow and granulocyte colony-stimulating factor (G-CSF) mobilized peripheral blood (10 microg/kg/day for 5 days). Cell cycle status of the phenotypically primitive CD34+CD38- hematopoietic stem cell population was analyzed using a four-color flow cytometry technique that distinguished the G0, G1, and S/IG2/M phases of the cell cycle. Semiquantitative reverse transcriptase-polymerase chain reaction was performed to measure mRNA expression of the amphotropic retroviral receptor. Peripheral blood hematopoietic stem cells had 2.6-fold more cells in the G1 phase of the cell cycle compared to steady-state bone marrow. Furthermore, lineage CD34+CD38- cells from G-CSF mobilized peripheral blood had a fourfold higher level of amphotropic retrovirus receptor mRNA. In conclusion, we found that CD34+ CD38- hematopoietic stem cells isolated from G-CSF mobilized peripheral blood differ from those isolated from steady-state bone marrow in that a significant proportion have entered the G1 phase of the cell cycle and express higher levels of amphotropic receptor mRNA. These biologic properties are consistent with the reported rapid recovery of hematopoietic function following transplantation with peripheral blood hematopoietic stem cells and make these cells a preferred target for retroviral-based gene transfer.
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Affiliation(s)
- M E Horwitz
- Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, Bethesda, MD 20892, USA.
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36
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Abstract
Mice treated with cytokines for 5 days have large numbers of hematopoietic stem cells (HSCs) in their peripheral blood and bone marrow at 1 and 14 days after the last injection. We fractionated the HSCs from the bone marrow of these mice using elutriation at flow rates of 25, 30 and 35 ml/min. The subpopulations of HSCs from cytokine-treated mice show a 3- to 8-fold higher level of mRNA encoding the amphotropic retrovirus receptor (amphoR) compared with the corresponding HSC subpopulation from untreated mouse bone marrow. In an earlier study with mouse HSCs we showed a direct correlation between high levels of amphoR mRNA and efficient retrovirus transduction. We have now utilized our gene transfer protocol to assay amphotropic retrovirus transduction efficiency using HSCs from the bone marrow of mice treated with granulocyte-colony stimulating factor/stem cell factor (G-CSF/SCF). To extend these findings to a more clinically relevant protocol we analyzed the amphoR mRNA levels in HSCs from human cord blood and adult bone marrow. The amphoR mRNA level in HSCs from human bone marrow and fresh cord blood was detectable at an extremely low level compared with the HSC population in cryopreserved cord blood samples. The 12- to 22-fold increase in amphoR mRNA in HSCs from cryopreserved cord blood renders these HSCs likely candidates for high efficiency, gene transfer.
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Affiliation(s)
- D Orlic
- Hematopoiesis Section, Genetics and Molecular Biology Branch, National Human Genome Research Institute, NIH, Bethesda, Maryland, USA
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Orlic D, Laprise SL, Cline AP, Anderson SM, Bodine DM. Isolation of stem cell-specific cDNAs from hematopoietic stem cell populations. Ann N Y Acad Sci 1999; 872:243-54; discussion 254-5. [PMID: 10372127 DOI: 10.1111/j.1749-6632.1999.tb08469.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
We have begun to isolate gene sequences that are specifically expressed in hematopoietic stem cells (HSCs). There are at least three fundamental requirements for the isolation of HSC-specific transcripts. First, highly enriched populations of HSCs, and an HSC-depleted cell population for comparison must be isolated. Secondly, the gene isolation procedures must be adapted to accommodate the small amounts of RNA obtained from purified HSCs. Finally, a defined screening strategy must be developed to focus on sequences to be examined in more detail. In this report, we describe the characterization of populations of HSCs that are highly enriched (Lin- c-kitHI) or depleted (Lin- c-kitNEG) of HSCs. We compared two methods for gene isolation, differential display polymerase chain reaction (DD-PCR) and subtractive hybridization (SH), and found that the latter was more powerful and efficient in our hands. Lastly we describe the strategy that we have developed to screen clones for further study.
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Affiliation(s)
- D Orlic
- Hematopoiesis Section, Genetics and Molecular Biology Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland 20892-4442, USA
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Orlic D, Girard LJ, Anderson SM, Bodine DM. Retrovirus receptor mRNA expression correlates with gene transfer efficiency in pluripotent hematopoietic stem cells. Leukemia 1999; 13 Suppl 1:S52-4. [PMID: 10232366 DOI: 10.1038/sj.leu.2401287] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Hematopoietic stem cells (HSC) from bone marrow, peripheral blood and cord blood are important in clinical transplantation. However, their use in gene therapy protocols is still limited by a low level of transduction efficiency. In addition to the cell cycling block to retrovirus transduction, we recently demonstrated that the low level of retrovirus receptor mRNA in mouse HSC correlated with the low level of amphotropic retrovirus transduction in these cells. Similarly, we found low levels of mRNA encoding the amphotropic retrovirus receptor in human bone marrow Lin CD34+ CD38- HSC. In an effort to identify an alternative population of human HSC that might be more efficiently transduced, we assayed HSC populations from cord blood for mRNA encoding the amphotropic retrovirus receptor. High levels of receptor mRNA were present in HSC from previously cryopreserved cord blood compared with HSC from fresh bone marrow and fresh cord blood. The HSC from cryopreserved cord blood are excellent candidates for gene therapy protocols.
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Affiliation(s)
- D Orlic
- Hematopoiesis Section, Genetics and Molecular Biology Branch, NHGRI, NIH, Bethesda, MD 20892-4442, USA
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Persons DA, Allay JA, Allay ER, Ashmun RA, Orlic D, Jane SM, Cunningham JM, Nienhuis AW. Enforced expression of the GATA-2 transcription factor blocks normal hematopoiesis. Blood 1999; 93:488-99. [PMID: 9885210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
The zinc finger transcription factor GATA-2 is highly expressed in immature hematopoietic cells and declines with blood cell maturation. To investigate its role in normal adult hematopoiesis, a bicistronic retroviral vector encoding GATA-2 and the green fluorescent protein (GFP) was used to maintain the high levels of GATA-2 that are normally present in primitive hematopoietic cells. Coexpression of the GFP marker facilitated identification and quantitation of vector-expressing cells. Bone marrow cells transduced with the GATA-2 vector expressed GFP as judged by flow cytometry and GATA-2 as assessed by immunoblot analysis. A 50% to 80% reduction in hematopoietic progenitor-derived colony formation was observed with GATA-2/GFP-transduced marrow, compared with marrow transduced with a GFP-containing vector lacking the GATA-2 cDNA. Culture of purified populations of GATA-2/GFP-expressing and nonexpressing cells confirmed a specific ablation of the colony-forming ability of GATA-2/GFP-expressing progenitor cells. Similarly, loss of spleen colony-forming ability was observed for GATA-2/GFP-expressing bone marrow cells. Despite enforced GATA-2 expression, marrow cells remained viable and were negative in assays to evaluate apoptosis. Although efficient transduction of primitive Sca-1(+) Lin- cells was observed with the GATA-2/GFP vector, GATA-2/GFP-expressing stem cells failed to substantially contribute to the multilineage hematopoietic reconstitution of transplanted mice. Additionally, mice transplanted with purified, GATA-2/GFP-expressing cells showed post-transplant cytopenias and decreased numbers of total and gene-modified bone marrow Sca-1(+) Lin- cells. Although Sca-1(+) Lin- bone marrow cells expressing the GATA-2/GFP vector were detected after transplantation, no appreciable expansion in their numbers occurred. In contrast, control GFP-expressing Sca-1(+) Lin- cells expanded at least 40-fold after transplantation. Thus, enforced expression of GATA-2 in pluripotent hematopoietic cells blocked both their amplification and differentiation. There appears to be a critical dose-dependent effect of GATA-2 on blood cell differentiation in that downregulation of GATA-2 expression is necessary for stem cells to contribute to hematopoiesis in vivo.
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Affiliation(s)
- D A Persons
- Division of Experimental Hematology, Department of Hematology/Oncology, St Jude Children's Research Hospital, Memphis, TN 38105, USA
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Bunnell BA, Kluge KA, Lee-Lin SQ, Byrne ER, Orlic D, Metzger ME, Agricola BA, Wersto RP, Bodine DM, Morgan RA, Donahue RE. Transplantation of transduced nonhuman primate CD34+ cells using a gibbon ape leukemia virus vector: restricted expression of the gibbon ape leukemia virus receptor to a subset of CD34+ cells. Gene Ther 1999; 6:48-56. [PMID: 10341875 DOI: 10.1038/sj.gt.3300808] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The transduction efficiencies of immunoselected rhesus macaque (Macaca mulatta) CD34+ cells and colony-forming progenitor cells based on polymerase chain reaction (PCR) analysis were comparable for an amphotropic Moloney murine leukemia virus (MLV) retroviral vector and a retroviral vector derived from the gibbon ape leukemia virus (GaLV) packaging cell line, PG13. On performing autologous transplantation studies using immunoselected CD34+ cells transduced with the GaLV envelope (env) retroviral vector, less than 1% of peripheral blood (PB) contained provirus. This was true whether bone marrow (BM) or cytokine-mobilized PB immunoselected CD34+ cells were reinfused. This level of marking was evident in two animals whose platelet counts never fell below 50,000/microliter and whose leukocyte counts had recovered by days 8 and 10 after having received 1.7 x 10(7) or greater of cytokine-mobilized CD34+ PB cells/kg. Reverse transcriptase(RT)-PCR analysis of CD34+ subsets for both the GaLV and amphotropic receptor were performed. The expression of the GaLV receptor was determined to be restricted to CD34+ Thy-1+ cells, and both CD34+ CD38+ and CD34+ CD38dim cells, while the amphotropic receptor was present on all CD34+ cell subsets examined. Our findings suggest that, in rhesus macaques, PG13-derived retroviral vectors may only be able to transduce a subset of CD34+ cells as only CD34+ Thy-1+ cells express the GaLV receptor.
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Affiliation(s)
- B A Bunnell
- Clinical Gene Therapy Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
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Sullivan PA, Murphy D, Sullivan PA, Keogh S, Sullivan PA, Nash P, Kaarisalo MM, Marttila J, Immonen-Raiha P, Salomaa V, Torppa J, Tuomilehto J, Siani A, Racone R, Ragone E, Stinga F, Strazzullol P, Cappuccio FP, Trevisan M, Farinaro E, Mellone C, Fox KF, Cowie MR, Wood DA, Coats AJ, Poole Wilson PA, Sutton GC, Yarnell J, Sweetnam P, Thomas H, Piwonski J, Piotrowski W, Pytlak A, Wannamethee SG, Shaper AG, Walker M, Sharpe PC, Young IS, Hasselwander O, McMaster D, Mercer C, McGrath LT, Evans AE, Thomas F, Guize L, Ducimetiere P, Benetos A, Rosolova H, Simon J, Mayer O, Sefrna F, Mayer O, Šimon J, Rosolova H, Racek J, Trefil L, Marin-Tarlea M, Carp C, Apetrei E, Ginghina C, Serban I, Florica N, Ceck C, Patrascoiu M, Ginghina C, Carp C, Apetrei E, Tarlea M, Cioranu R, Florica N, Ceck C, Vaduva M, Mihaescu D, Lapadat M, Ashton WD, Wood D, Nanchahahal K, Kelleher CC, Brennan PJ, Howarth D, Meade TW, Kelleher CC, Fallon UB, McCarthy U, O’Donnell MMK, Dineen B, Jousilahti P, Vartiainen E, Tuomilehto J, Puska P, Kastarinen M, Nissinen A, Salomaa V, Vartiainen E, Jousilahti P, Tuomilehto J, Puska P, Rosengren A, Wedel H, Wilhelmsen L, Liese AD, Hense HW, Keil U, Keil U, Liese AD, Hense HW, Filipiak B, Döring A, Stieber J, Lowel H, De Laet C, Brasseur D, Kahn A, Wautrecht JC, Decuyper J, Boeynaems JM, Jousilahti P, Vartiainen E, Tuomilehto J, Sundvall J, Puska P, Marques-Vidal P, Ferrières J, Haas B, Evans A, Amouyel P, Luc G, Ducimetiere P, Marques-Vidal P, Ferrieres J, Arveiler D, Montaye M, Evans A, Ducimetiere P, Fuentes R, Notkola IL, Shemeikka S, Tuomilehto J, Nissinen A, Mak R, De BacquerBacquer D, De Backer G, Stam M, Koyuncu R, de Smet P, Kornitzer M, Braeckman L, De Backer G, De Bacquer D, Claeys L, Delanghe J, De Bacquer D, Kornitzer M, De Backer G, Cífkova R, Pit’ha J, Červenka L, Šejda T, Lanska V, Škodová Z, Stavek P, Poledne R, Cífková R, Duskova A, Hauserová G, Hejl Z, Lánská V, Škodova Z, Pistulková H, Poledne R, Hubáček J, Pit’ha J, Stávek P, Lánská V, Cífková R, Faleiro LL, Rodrigues D, Fonseca A, Martins MC, Norris RM, Nyyssönen K, Seppänen K, Salonen R, Kantola M, Salonen JT, Parviainen MT, De Henauw S, Myny K, Doyen Z, Van Oyen H, Tafforeau J, Kornitzer M, De Backer G, Benetos A, Thomas F, Guize L, Immonen-Räihä P, Kaarisalo M, Marttila RJ, Torppa J, Tuomilehto J, Houterman S, Hofman B, Witteman JCM, Verschuren WMM, van de Vijver LPL, Kardinaal AFM, Grobbee DE, van Poppel G, Princen HMG, Kornitzer M, Doven M, Koyuncu R, De Bacquer D, Myny K, De Backer G, Tafforeau J, Van Oven H, Doyen M, Koyuncu R, Kornitzer M, De Bacquer D, Myny K, De Backer G, Tafforeau J, Van Oyen H, de Bree A, Verschuren WMM, Blom HJ, Mulder I, Smit HA, Menotti A, Kromhout D, Van den Hoogen PCW, Hofman A, Witteman JCM, Feskens EJM, Štika L, Bruthans J, Wierzbicka M, Bolinska H, Voutilainen S, Nyyssönen K, Salonen R, Lakka TA, Salonen JT, Lakka HM, Lakka TA, Salonen JT, Tuomainen TP, Nyyssonen K, Salonen JT, Punnonen K, Yarnell J, Patterson C, Thomas H, Sweetnam P, Smith WCS, Campbell SE, Cardy A, Phillips DO, Helms PJ, Squair J, Smith WCS, Cardy A, Phillips DO, Helms PJ, Squair J, Smith WCS, Cardy A, Phillips DO, Helms PJ, Squair J, Pytlak A, Piotrowski W, Rywik S, Waskiewicz A, Sygnowska E, Szczesniewska D, Sygnowska E, Waskiewicz A, Wagrowska H, Polakowska M, Rywik S, Broda G, Jasinski B, Piotrowski W, Elandt-Johnson RC, Wagrowska H, Kupsé W, Szczesniewska D, Platonov DY, Haapanen N, Miilunpalo S, Vuori I, Pasanen M, Oja P, Urponen H, Kopp MS, Skrabski A, Szedmák S, Boaz M, Biro A, Katzir Z, Matas T, Smetana S, Green M, Whincup PH, Morris R, Walker M, Lennon L, Thomson A, Ebrahim SJB, Refsum H, Ueland PM, Perry IJ, Boer JMA, Kuivenhoven JA, Feskens EJM, Schouten EG, Havekes LM, Seidell JC, Kastelein JJP, Kromhout D, Oomen CM, Feskens EJM, Rasanen L, Nissinen A, Fidanza F, Menotti A, Kok FJ, Kromhout D, Sileikiene L, Klambienne J, Milasauskiene Z, Cappuccio FP, Siani A, Barba G, Russo L, Ragone E, Strazzullo P, Farinaro E, Trevisan M, Schnohr P, Parner J, Lange P, Meleady R, Graham IM, Ueland PM, Refsum H, Blom H, Whitehead AS, Daly LE, Stefanovic B, Boskovic D, Mitrovic P, Perunicic J, Vukcevic V, Radovanovic N, Terzic B, Mrdovic I, Orilc D, Matic G, Vasiljevic Z, Mitrovic P, Boskovic D, Stefanovic B, Perunicic J, Vukcevic V, Mrdovic I, Radovanovic N, Orlic D, Matic G, Milentijevic B, Rajic D, Mitrovic N, Boskovic S, Vasiljevic Z, Marin-Tarlea M, Carp C, Apetrei E, Serban I, Ceck C, Patrascsoiu M, Florica N, Mihaescu D, Murphy C, Meleady R, Ingram S, Love J, Graham I, Graham IM, Meleady R, van Berkel TFM, Deckers JW, De Bacquer D. Working Group on Epidemiology and Prevention of the European Society of Cardiology. Shannon, May 14-17, 1998. Abstracts. Ir J Med Sci 1998; 167 Suppl 7:1-35. [PMID: 9827492 DOI: 10.1007/bf02937278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bodine DM, Dunbar CE, Girard LJ, Seidel NE, Cline AP, Donahue RE, Orlic D. Improved amphotropic retrovirus-mediated gene transfer into hematopoietic stem cells. Ann N Y Acad Sci 1998; 850:139-50. [PMID: 9668536 DOI: 10.1111/j.1749-6632.1998.tb10471.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The efficiency of amphotropic retrovirus-mediated gene transfer into human Hematopoietic Stem Cells (HSC) is less than 1%. This has impeded gene therapy for hematopoietic diseases. In this study we demonstrate that populations of mouse and human HSC contain low to undetectable levels of the amphotropic virus receptor mRNA (ampho R mRNA), and are resistant to transduction with amphotropic retroviral vectors. In a subpopulation of mouse HSC expressing 7-fold higher levels of ampho R mRNA, transduction with amphotropic retrovirus vectors was 30-fold higher. We conclude that retrovirus transduction of HSC correlates with ampho R mRNA levels. Our results predict that alternative sources of HSC or retroviruses will be required for human gene therapy of hematopoietic diseases. One alternative source of stem cells is from individuals treated with cytokines. We have previously shown that mice treated with G-CSF and SCF have an immediate increase in peripheral blood HSC immediately after treatment, followed by a 10-fold increase in bone marrow HSC 14 days after treatment. In this report we show that when rhesus monkey bone marrow cells collected 14 days after G-CSF and SCF treatment were transduced with amphotropic retroviruses, gene transfer levels were approximately 10%, which was easily detected by Southern blot analysis. We conclude that the increased gene transfer may be the result of increased expression of the amphotropic retrovirus receptor, increased numbers of cycling HSC or both.
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Affiliation(s)
- D M Bodine
- Hematopoiesis Section, National Center for Human Genome Research, NIH, Bethesda, Maryland 20892-4442, USA
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Orlic D, Girard LJ, Anderson SM, Pyle LC, Yoder MC, Broxmeyer HE, Bodine DM. Identification of human and mouse hematopoietic stem cell populations expressing high levels of mRNA encoding retrovirus receptors. Blood 1998; 91:3247-54. [PMID: 9558380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
One obstacle to retrovirus-mediated gene therapy for human hematopoietic disorders is the low efficiency of gene transfer into pluripotent hematopoietic stem cells (HSC). We have previously shown a direct correlation between retrovirus receptor mRNA levels in mouse HSC and the efficiency with which they are transduced. In the present study, we assayed retrovirus receptor mRNA levels in a variety of mouse and human HSC populations to identify HSC which may be more competent for retrovirus transduction. The highest levels of amphotropic retrovirus receptor (amphoR) mRNA were found in cryopreserved human cord blood HSC. The level of amphoR mRNA in Lin- CD34(+) CD38(-) cells isolated from frozen cord blood was 12-fold higher than the level in fresh cord blood Lin- CD34(+) CD38(-) cells. In mice, the level of amphoR mRNA in HSC from the bone marrow (BM) of mice treated with stem cell factor and granulocyte-colony stimulating factor was 2.8- to 7.8-fold higher than in HSC from the BM of untreated mice. These findings suggest that HSC from frozen cord blood and cytokine-mobilized BM may be superior targets for amphotropic retrovirus transduction compared with HSC from untreated adult BM.
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Affiliation(s)
- D Orlic
- Hematopoiesis Section, Laboratory of Gene Transfer, National Human Genome Research Institute (NHGRI), National Institutes of Health (NIH), Bethesda, MD, USA
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Sabatino DE, Do BQ, Pyle LC, Seidel NE, Girard LJ, Spratt SK, Orlic D, Bodine DM. Amphotropic or gibbon ape leukemia virus retrovirus binding and transduction correlates with the level of receptor mRNA in human hematopoietic cell lines. Blood Cells Mol Dis 1997; 23:422-33. [PMID: 9454686 DOI: 10.1006/bcmd.1997.0161] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The low level of amphotropic retrovirus mediated gene transfer into human hematopoietic stem cells (HSC) has been an impediment to gene therapy for hematopoietic diseases (1). We have previously shown that mouse and human HSC have low levels of the mRNA encoding PiT-2, the amphotropic retrovirus receptor. We hypothesized that the low level of PiT-2 mRNA was responsible for the low frequency of transduction of HSC by amphotropic retroviral vectors (2). In this study we compared the level of PiT-2 and PiT-1, the Gibbon Ape Leukemia Virus receptor (GaLV), in 5 human tissue culture cell lines. PiT-2 and PiT-1 mRNA levels were highest in K562 cells and lowest in HL60 cells. In hematopoietic cell lines, the level of PiT-2 or PiT-1 mRNA correlated directly with retrovirus binding and transduction with the appropriate (amphotropic or GaLV) retrovirus vector. The level of expression of PiT-2 and PiT-1 mRNA could be increased by treatment of HL60 cells with either PMA or Interleukin-1alpha. The increase in the level of PiT-2 and PiT-1 mRNA correlated with increased transduction with both amphotropic and GaLV retroviral vectors. We conclude that the improved transduction was a direct effect of the increased levels of receptor mRNA and unrelated to changes in the cell cycle status.
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Affiliation(s)
- D E Sabatino
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892-4442, USA
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Orlic D, Girard LJ, Anderson SM, Do BK, Seidel NE, Jordan CT, Bodine DM. Transduction efficiency of cell lines and hematopoietic stem cells correlates with retrovirus receptor mRNA levels. Stem Cells 1997; 15 Suppl 1:23-8; discussion 28-9. [PMID: 9368321 DOI: 10.1002/stem.5530150805] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The low transduction efficiency of hematopoietic stem cells (HSC) using amphotropic retroviruses continues to plague gene therapy protocols. This low transduction efficiency may be related to a low level of amphotropic retrovirus binding to target cell receptors. We have assayed murine and human cell lines as well as primary bone marrow HSC populations for mRNA encoding retrovirus receptors. Total cellular RNA was amplified by reverse transcriptase-polymerase chain reaction and the level of ecotropic and amphotropic receptor mRNA was compared to the level of beta 2-microglobulin mRNA in the same cell populations. Cell lines that are easily transduced by ecotropic and amphotropic retroviruses have high levels of receptor mRNA. In studies using murine HSC-enriched populations obtained from bone marrow, we observed a high correlation between transduction efficiency and the level of ecotropic and amphotropic receptor mRNA. We predict from these findings that purification of monkey and human HSC populations with high levels of amphotropic receptor mRNA will enable us to obtain improved efficiency of gene transfer.
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Affiliation(s)
- D Orlic
- Laboratory of Gene Transfer, National Institutes of Health, Bethesda, Maryland, USA
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Abstract
The site of origin of lymphohematopoietic stem cells (HSC) that initiate definitive blood cell production in the murine fetal liver is controversial. Contrary to reports that the preliver yolk sac does not contain definitive HSC, we observed that CD34+ day 9 yolk sac cells repopulated multiple blood cell lineages in newborn hosts for at least 1 year. Furthermore, 100 CD34+c-Kit+ day 9 yolk sac or para-aortic splanchnopleura (P-Sp) cells, known to give rise to embryonic HSC, similarly repopulated hematopoiesis in recipient hosts. Surprisingly, 37-fold more CD34+c-Kit+ cells reside in the day 9 yolk sac than in the P-Sp. In sum, definitive HSC are coexistent, but not equal in number, in the murine yolk sac and P-Sp prior to fetal liver colonization.
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Affiliation(s)
- M C Yoder
- Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis 46202, USA
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Orlic D, Girard LJ, Lee D, Anderson SM, Puck JM, Bodine DM. Interleukin-7R alpha mRNA expression increases as stem cells differentiate into T and B lymphocyte progenitors. Exp Hematol 1997; 25:217-22. [PMID: 9091297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The gamma common (gamma c) chain is a partner in several interleukin receptor complexes, including the interleukin-2 receptor (IL-2R), IL-4R, and IL-7R. Mutations in the gamma c gene are associated with X-linked severe combined immunodeficiency (SCID). Using reverse transcriptase-PCR, we examined the level of mRNA-encoding gamma c and its partners in mouse pluripotent hematopoietic stem cells (PHSCs), which repopulate both bone marrow and thymus. We also assayed developing lymphocytes to define which, if any, IL-R complexes are expressed at the earliest stage of T and B lymphocyte maturation. RNA extracted from bone marrow-derived PHSCs did not contain detectable levels of mRNA-encoding IL-7R alpha. However, the most primitive (CD4- CD8-) T cells from the thymus and the most primitive (c-kit+ B220+) B cells from bone marrow contained high levels of IL-7R alpha mRNA. There were no detectable differences between PHSCs and primitive or more mature T and B cells for expression of gamma c mRNA. We conclude that the onset of IL-7R formation occurs at the earliest stage of differentiation of T and B lymphocytes. Our findings are consistent with the hypothesis that the absence of an intact IL-7R (IL-7R alpha and gamma c) may be a critical loss that interrupts lymphopoiesis.
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Affiliation(s)
- D Orlic
- Hematopoiesis Section, NHGRI, NIH, Bethesda, MD 20892-4442, USA
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Orlic D, Girard LJ, Jordan CT, Anderson SM, Cline AP, Bodine DM. The level of mRNA encoding the amphotropic retrovirus receptor in mouse and human hematopoietic stem cells is low and correlates with the efficiency of retrovirus transduction. Proc Natl Acad Sci U S A 1996; 93:11097-102. [PMID: 8855315 PMCID: PMC38290 DOI: 10.1073/pnas.93.20.11097] [Citation(s) in RCA: 200] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The low level of amphotropic retrovirus-mediated gene transfer into human hematopoietic stem cells (HSC) has been a major impediment to gene therapy for hematopoietic diseases. In the present study, we have examined amphotropic retrovirus receptor (amphoR) and ecotropic retrovirus receptor mRNA expression in highly purified populations of mouse and human HSC. Murine HSC with low to undetectable levels of amphoR mRNA and relatively high levels of ecotropic retrovirus receptor mRNA were studied. When these HSC were analyzed simultaneously for ecotropic and amphotropic retrovirus transduction, ecotropic provirus sequences were detected in 10 of 13 long-term repopulated animals, while amphotropic proviral sequences were detected in only one recipient. A second distinct population of murine HSC were isolated that express 3-fold higher levels of amphoR mRNA. When these HSC were analyzed simultaneously for ecotropic and amphotropic retrovirus transduction, 11 of 11 repopulated mice contained ecotropic provirus and 6 of 11 contained amphotropic provirus sequences, a significant increase in the amphotropic retrovirus transduction (P = 0.018). These results indicate that, among the heterogeneous populations of HSC present in adult mouse bone marrow, the subpopulation with the highest level of amphoR mRNA is more efficiently transduced by amphotropic retrovirus. In a related study, we found low levels of human amphoR mRNA in purified populations of human HSC (CD34+ CD38-) and higher levels in committed progenitor cells (CD34+ CD38+). We conclude that the amphoR mRNA level in HSC correlates with amphotropic retrovirus transduction efficiency.
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Affiliation(s)
- D Orlic
- Hematopoiesis Section, National Center for Human Genome Research, National Institutes of Health, Bethesda, MD 20892-4442, USA.
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Bodine DM, Seidel NE, Orlic D. Bone marrow collected 14 days after in vivo administration of granulocyte colony-stimulating factor and stem cell factor to mice has 10-fold more repopulating ability than untreated bone marrow. Blood 1996; 88:89-97. [PMID: 8704206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
We have examined the repopulating ability of bone marrow and peripheral blood cells collected immediately and at intervals after treatment of donor mice with the combination of granulocyte colony-stimulating factor (G-CSF) and stem cell factor (SCF). Using a competitive repopulation assay we showed that the repopulating ability of peripheral blood cells was highest immediately after cytokine treatment and declined to normal levels within 6 weeks of the termination of treatment with G-CSF and SCF. In contrast the repopulating ability of bone marrow cells was low immediately after cytokine treatment and increased to levels that were 10-fold or more greater than marrow from untreated mice by 14 days after termination of treatment with G-CSF and SCF. This high level of repopulating activity declined to normal levels by 6 weeks after termination of treatment with G-CSF and SCF. The high level of repopulating ability was confirmed by injecting cells from G-CSF- and SCF-treated donors into unconditioned recipients. Peripheral blood cells collected immediately after treatment with G-CSF and SCF engrafted into unconditioned mice sevenfold better than an equivalent number of bone marrow cells from untreated mice. Likewise, bone marrow cells collected 14 days after treatment of the donor animal with G-CSF and SCF engrafted at 10-fold higher levels than an equivalent number of bone marrow cells from untreated mice. We conclude that the treatment of donor mice with G-CSF and SCF causes a transient increase in the repopulating ability of peripheral blood and later of bone marrow. These observations may have applications to clinical hematopoietic stem cell transplantation.
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Affiliation(s)
- D M Bodine
- Hematopoiesis Section, Laboratory of Gene Transfer/National Center Human Genome Research, Bethesda, MD 20892-4470, USA
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