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Vacarescu C, Luca CT, Gaita D, Crisan S, Mornos C, Goanta EV, Lazar MA, Ionac I, Arnautu DA, Cozma D. Fusion CRT pacing: septal flash significance in super responder patients. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.999] [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
LV only CRT pacing is an option that may be considered to maximize response to CRT and at least as an alternative in non-responders to biventricular (BiV) pacing. However, criteria to best titrate therapy on an individual basis are lacking in fusion pacing. On the other hand, septal flash (SF) is a strong predictor of favorable response for patients (pts) with BiV pacing.
Purpose
To analyze the relationship between SF and the response to fusion CRT pacing.
Methods
Consecutive pts with exclusive fusion CRT-P were included. Right atrium/left ventricle leads DDD CRT pacing system were used in all patients. Prospective data were collected at every 6 months follow-up visits: device interrogation, exercise test, echocardiographic parameters. Exercise tests, device reprogramming and medication optimization were performed regular in order to maximize CRT response. Patients were divided in 2 groups: super-responders (SR) and responders (R). SRs were defined those with left ventricular end-systolic volume (LVESV) improvement ≥30% and stable ejection fraction (LVEF) ≥45%.
Results
69 pts with NYHA II–III heart failure and non-ischemic dilated cardiomyopathy were initially included. 5 pts were non responders and excluded (non LBBB, spontaneous QRS <149 ms). Final analyzed group had 64 pts (35 male) aged 60±12 y.o. The mean follow-up was 54±19 months; 22 pts (34%) were SRs. At baseline, SF was found in all SR pts and in 55% of R pts. SF was corrected post CRT in all patients, except one. For this patient (LV lead in a posterior branch of the coronary sinus – CS) the strategy included an upgrade to triple chamber device with a second lead in a lateral branch of the CS and became SR from R. Mitral regurgitation decreased in 38 patients (all SR, 40% R). Interesting, baseline left atrium volume and pulmonary sistolic artery pressure were smaller in SR versus R group, however SF did not corelate with LA volume/diastolic dysfunction.
Conclusions
Septal flash seems to be a strong predictor of super-response in patients with fusion CRT pacing. This finding could improve the selection of candidates for fusion CRT-P, however larger studies are needed to assess SF in this categories of patients.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- C Vacarescu
- University of Medicine Victor Babes , Timisoara , Romania
| | - C T Luca
- University of Medicine Victor Babes , Timisoara , Romania
| | - D Gaita
- University of Medicine Victor Babes , Timisoara , Romania
| | - S Crisan
- University of Medicine Victor Babes , Timisoara , Romania
| | - C Mornos
- University of Medicine Victor Babes , Timisoara , Romania
| | - E V Goanta
- University of Medicine Victor Babes , Timisoara , Romania
| | - M A Lazar
- University of Medicine Victor Babes , Timisoara , Romania
| | - I Ionac
- University of Medicine Victor Babes , Timisoara , Romania
| | - D A Arnautu
- University of Medicine Victor Babes , Timisoara , Romania
| | - D Cozma
- University of Medicine Victor Babes , Timisoara , Romania
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Barbu EC, Moroti-Constantinescu VR, Lazar M, Chitu CE, Olariu CM, Bojinca M, Ion DA. BODY COMPOSITION CHANGES IN MEN WITH HIV/HCV COINFECTION, HIV MONOINFECTION, AND HCV MONOINFECTION. Acta Endocrinol (Buchar) 2022; 18:442-451. [PMID: 37152870 PMCID: PMC10162814 DOI: 10.4183/aeb.2022.442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Context Both human immunodeficiency virus (HIV) infection and hepatitis C virus (HCV) infection represent systemic diseases that may develop metabolic complications, thus HIV/HCV coinfection metabolic changes need to be depicted. Objective We aimed to evaluate the body composition changes in patients with either HIV and HCV monoinfections or HIV/HCV coinfection. Methods 123 young men divided into three groups: 41 with HIV/HCV coinfection, 42 with HIV-monoinfection, and 40 with HCV-monoinfection were evaluated for total and regional bone and soft tissue body composition assessments using a Dual-energy X-ray absorptiometry (DXA) and were compared with 40 healthy men with age and body mass index similar to the study groups. To detect sarcopenia, we calculated the appendicular limbs' lean mass index (ALMI), for obesity, we used the percent of body fat, and for lipodystrophy, we calculated the trunk/limbs index. Results HIV/HCV coinfection is associated with a significant higher bone demineralization in all regions of interest compared to HCV or HIV monoinfections and to controls. The prevalence of bone demineralization in HIV/HCV patients was 31.7%, more frequently at lumbar spine. Fat mass and lean mass were significantly lower in HIV/HCV-coinfected patients than in controls. Lipodystrophy was found in similar percentages in all three evaluated groups (80.4% in HIV/HCV, 92.5% in HIV, and 95% in the HCV group). Sarcopenia was higher in HIV/HCV group (43.9%) and important in HCV-monoinfection group (30%). Conclusions HIV/HCV-coinfected patients had the highest prevalence of bone demineralization, fat mass, and lean mass loss, compared to controls and to HIV and HCV monoinfections.
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Affiliation(s)
- E C Barbu
- "Carol Davila" University of Medicine and Pharmacy, Faculty of Medicine
| | - V R Moroti-Constantinescu
- "Carol Davila" University of Medicine and Pharmacy, Faculty of Medicine
- "Prof. Dr. Matei Balș" National Institute for Infectious Diseases
| | - M Lazar
- "Carol Davila" University of Medicine and Pharmacy, Faculty of Medicine
- "Prof. Dr. Matei Balș" National Institute for Infectious Diseases
| | - C E Chitu
- "Carol Davila" University of Medicine and Pharmacy, Faculty of Medicine
| | - C M Olariu
- "Carol Davila" University of Medicine and Pharmacy, Faculty of Medicine
- "Prof. Dr. Matei Balș" National Institute for Infectious Diseases
| | - M Bojinca
- "Carol Davila" University of Medicine and Pharmacy, Faculty of Medicine
- "Dr. I. Cantacuzino" Clinical Hospital, Bucharest, Romania
| | - D A Ion
- "Carol Davila" University of Medicine and Pharmacy, Faculty of Medicine
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Sosdean R, Ionica LN, Pescariu SA, Goanta FS, Lazar MA, Mornos C, Ionac A, Sturza A, Muntean DM, Luca CT, Feier H. Relationship between oxidative stress and three-dimensional echocardiographic changes in myxomatous mitral valves with severe regurgitation - a pilot study. Eur Heart J Cardiovasc Imaging 2022. [DOI: 10.1093/ehjci/jeab289.233] [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
Funding Acknowledgements
Type of funding sources: None.
Background. Reactive oxygen species (ROS) have been reported to contribute to the molecular pathogenesis of severe mitral regurgitation induced by myxomatous degeneration. Data about oxidative stress and the possible relationship with the extent of prolapsing and/or flail elements is scarce in the literature. The pathogenic mechanism may prompt the development of therapeutic approaches aimed at delaying extensive valvular alteration.
Purpose. The aim of the study is to investigate the possible correlation between ROS expression in myxomatous mitral valves with severe regurgitation and the extent of valvular alteration.
Material and methods. Samples from myxomatous mitral valves with ruptured chordae and severe regurgitation were harvested during surgical intervention for valve repair/replacement from 9 patients. Besides transthoracic echocardiography, all patients were evaluated before surgery by transesophageal echocardiography (TEE) with three-dimensional (3D) reconstruction of the mitral valve, using 3D zoom mode acquisition with qualitative and quantitative analysis through the 4D Auto MVQ technology. Tissue from the valvular samples was further analysed for the assessment of ROS by 2 methods: spectrophotometry (ferrous oxidation xylenol orange - FOX assay) and confocal microscopy (dihydroethidium staining).
Results. Patients had a mean age of 51.88 ± 13.54 years, with a left ventricular ejection fraction of 62.55 ± 7.33%, left ventricular end-diastolic diameter of 5.4 ± 0.72cm and end-diastolic volume of 168.55 ± 62.57ml, a mitral annulus area of 17.91 ± 5.74 cm2 and a number of prolapsing/flail scallops varying between 1 and 5 (average of 2 ± 1 scallops). All patients had diffuse thickening of the mitral leaflets with at least one primary and one secondary ruptured chordae and flail of the P2 scallop. Two patients had significant prolapse of at least 2 anterior mitral leaflet scallops and three patients had supplemental significant prolapse and/or flail of at least 1 posterior scallop, besides flail of P2. The mean value for ROS in the valvular tissue was 9.46 ± 2.03nM H2O2/mg tissue/h at FOX assay. A significant positive correlation between the ROS values and the extent of prolapsing/flail segments was found (R = 0.67, p = 0.04).
Conclusion. Besides the diagnosis and accurate preoperatory valve description, 3D TEE along with molecular investigations contribute to the understanding of myxomatous mitral valves’ pathogenesis. Oxidative stress increased in the mitral valves with advanced myxomatous degeneration. Whether this occurs as a cause or a consequence contributing to the disease progression as well as the sources of ROS are worth further investigation.
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Affiliation(s)
- R Sosdean
- University of Medicine and Pharmacy Victor Babes Timisoara, Cardiology, Institute of Cardiovascular Diseases, Timisoara, Romania
| | - LN Ionica
- University of Medicine and Pharmacy Victor Babes Timisoara, Pathophysiology, Center for Translational Research and Systems Medicine, Timisoara, Romania
| | - SA Pescariu
- University of Medicine and Pharmacy Victor Babes Timisoara, Cardiology, Institute of Cardiovascular Diseases, Timisoara, Romania
| | - FS Goanta
- University of Medicine and Pharmacy Victor Babes Timisoara, Cardiology, Institute of Cardiovascular Diseases, Timisoara, Romania
| | - MA Lazar
- University of Medicine and Pharmacy Victor Babes Timisoara, Cardiology, Institute of Cardiovascular Diseases, Timisoara, Romania
| | - C Mornos
- University of Medicine and Pharmacy Victor Babes Timisoara, Cardiology, Institute of Cardiovascular Diseases, Timisoara, Romania
| | - A Ionac
- University of Medicine and Pharmacy Victor Babes Timisoara, Cardiology, Institute of Cardiovascular Diseases, Timisoara, Romania
| | - A Sturza
- University of Medicine and Pharmacy Victor Babes Timisoara, Pathophysiology, Center for Translational Research and Systems Medicine, Timisoara, Romania
| | - DM Muntean
- University of Medicine and Pharmacy Victor Babes Timisoara, Pathophysiology, Center for Translational Research and Systems Medicine, Timisoara, Romania
| | - CT Luca
- University of Medicine and Pharmacy Victor Babes Timisoara, Cardiology, Institute of Cardiovascular Diseases, Timisoara, Romania
| | - H Feier
- University of Medicine and Pharmacy Victor Babes Timisoara, Cardiovascular Surgery, Institute of Cardiovascular Diseases, Timisoara, Romania
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Gurgu A, Petrescu L, Vacarescu C, Luca CT, Mornos C, Crisan S, Lazar MA, Cozma D. Diastolic dyssynchrony in patients with LV only fusion pacing CRT without RV lead. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.034] [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
Funding Acknowledgements
Type of funding sources: None.
Background
CRT improves both systolic and diastolic function, thus increasing cardiac output. However, less data is available concerning diastolic dyssynchrony and fusion pacing CRT. The aim of our study was to assess the outcome of LV diastolic asynchrony in a population of fusion pacing CRT without right ventricular (RV) lead.
Methods
Prospective data were collected from a cohort of patients (pts) with right atrium/left ventricle leads (RA/LV CRT). Baseline and every 6 months follow-up included standard ETT and classical dyssynchrony parameter measurements. Diastolic dyssynchrony was done by offline speckle-tracking derived TDI timing assesment of the simultaneity of E" and A" basal septal and lateral wall 4 chamber view. New parameters were introduced: E" and respectively A" time (E"T / A"T) as the time difference between E" (respectively A" ) peaks septal and lateral wall. Exercise tests, drugs optimization and device individual programmimg were systematically performed in order to maintain constant fusion and improve CRT response. Patients were divided in three groups: super-responders (SR), responders (R) and non responders (NR).
Results
Sixty-two pts (35 male) aged 62 ± 11 y.o. with idiopathic DCM implanted with a RA/LV CRT were analyzed: 34%SR / 61%R / 5%NR. Baseline initial characteristics: QRS 164 ± 18 ms; EF 27 ± 5.2; 29% had type III diastolic dysfunction (DD), 63% type II DD, 8% type I DD. Average follow-up was 45 ± 19 months; mean LVEF at the last follow-up was 37 ± 7.9%. The E"T decreased from 90 ± 20 ms to 25 ± 10 ms in SR with significant LV reverse remodelling (LV end-diastolic volume 193.7 ± 81 vs 243.2 ± 82 ml at baseline, p < 0.0028) and lower LV filling pressures (E/E" 13.2 ± 4.6 vs 11.4 ± 4.5, p =0.0295). DD profile improved in 65% of R with a reduction in E/A ratio (1.46 ± 5.3 vs. 0.82 ± 3.9 at baseline, p= 0.4453). Non-sudden cardiac death occurred in 3 NR pts (2%) with type III DD, severe LA volume and larger E" T /A"T (E"T> 85 msec A"T > 30 msec). Significant cut off value calculated by ROC curve for LV diastolic dyssynchrony is E"T > 80 ms and A"T of > 25 msec.
Conclusions
Fusion pacing CRT without RV lead showed a positive outcome; improving LV diastolic dyssynchrony in responders and super-responders patients is obvious. Larger randomized studies are needed to define the role of diastolic asynchronism as a predictor of favorable response in fusion pacing.
Abstract Figure. Typical TDI patterns in LV fusion pacing
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Affiliation(s)
- A Gurgu
- University of Medicine and Pharmacy Victor Babes, Timisoara, Romania
| | - L Petrescu
- University of Medicine and Pharmacy Victor Babes, Timisoara, Romania
| | - C Vacarescu
- University of Medicine and Pharmacy Victor Babes, Timisoara, Romania
| | - CT Luca
- University of Medicine and Pharmacy Victor Babes, Timisoara, Romania
| | - C Mornos
- University of Medicine and Pharmacy Victor Babes, Timisoara, Romania
| | - S Crisan
- University of Medicine and Pharmacy Victor Babes, Timisoara, Romania
| | - MA Lazar
- University of Medicine and Pharmacy Victor Babes, Timisoara, Romania
| | - D Cozma
- University of Medicine and Pharmacy Victor Babes, Timisoara, Romania
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Taylor J, Ruggiero M, Maity A, Ko K, Greenberger B, Donofree D, Sherif K, Lazar M, Jaslow R, Richard S, Mitchell E, Anne P, Trabulsi E, Leader A, Simone N. Sexual Health Toxicity in Cancer Survivors: Is There a Gender Disparity in Physician Evaluation and Intervention? Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Fernandez C, Ali A, Miller R, Jaslow R, Lazar M, Anne P, Berger A, Cristofanilli M, Simone N. Success of Preoperative Radiotherapy in Inflammatory Breast Cancer with Inadequate Response to Taxane-Based Chemotherapies. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1143] [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: 11/24/2022]
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Armencea G, Cosma C, Dinu C, Onisor F, Lazar M, Berce P, Balc N, Baciut M, Bran S. Technical queries of a 3D design custom-made implant made from titanium particles for maxillofacial bone reconstruction. Particulate Science and Technology 2020. [DOI: 10.1080/02726351.2019.1578846] [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] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- G. Armencea
- Department of Oral and Maxillo-Facial surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - C. Cosma
- Department of Manufacturing Engineering, Technical University of Cluj-Napoca, Cluj-Napoca, Romania
| | - C. Dinu
- Department of Oral and Maxillo-Facial surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - F. Onisor
- Department of Oral and Maxillo-Facial surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - M. Lazar
- Department of Oral and Maxillo-Facial surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - P. Berce
- Department of Manufacturing Engineering, Technical University of Cluj-Napoca, Cluj-Napoca, Romania
| | - N. Balc
- Department of Manufacturing Engineering, Technical University of Cluj-Napoca, Cluj-Napoca, Romania
| | - M. Baciut
- Department of Oral and Maxillo-Facial surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - S. Bran
- Department of Oral and Maxillo-Facial surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Jedrzejczyk-Patej E, Mazurek M, Lazar M, Pruszkowska-Skrzep P, Podolecki T, Kowalczyk J, Kowalski O, Kalarus Z, Lenarczyk R. 854Predictors of ventricular tachyarrhythmia in patients with implantable cardioverter-defibrillator and non-ischaemic systolic heart failure. Europace 2020. [DOI: 10.1093/europace/euaa162.106] [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: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
none
OnBehalf
none
Background
The benefit of an implantable cardioverter-defibrillator (ICD) in patients with ischaemic heart failure (HF) has been well proven but the benefit of ICD in subjects with non-ischaemic systolic HF is less well-established. Consequently, there is very limited evidence which patients with non-ischaemic HF would benefit most from receiving an ICD.
Aim
To determine the incidence and predictors of ventricular arrhythmia in patients with ICD and non-ischaemic systolic HF.
Methods
Study population consisted of 420 consecutive patients with ICD and non-ischaemic systolic HF monitored remotely (on a daily basis) between 2010 and 2017 in tertiary care university hospital, in a densely inhabited, urban region of Poland. Sixty-six percentage of patients had cardiac resynchronization therapy with defibrillator (CRT-D).
Results
During the median follow-up of 1645 days (range: 507-3515) sustained ventricular arrhythmia occurred in 100 patients (23.8%). Of those, ventricular fibrillation (VF), ventricular tachycardia (VT) or VT/VF (combined) occurred in 10 (10.0%), 77 (77.0%) and 13 (13.0%) patients, respectively. Patients with versus without ventricular arrhythmia did differ with respect to baseline variables such as: left ventricular end diastolic diameter (LVEDD) - median of 67 mm [49-82] vs 62 mm [46-78]; post-inflammatory HF (17 vs 9.7%, P = 0.045); atrial fibrillation/atrial flutter - AF/AFL (57 vs. 38.1%, P = 0.0009); supraventricular arrhythmia (SVT) - any supraventricular arrythmia >100/min other than AF/AFL (27 vs. 15.9%, P = 0.01); and left ventricular ejection fraction - EF (25 vs. 28%, P = 0.01). No differences were observed for age, sex, NYHA class, mitral regurgitation, common comorbidities (including diabetes and chronic renal disease) or concomitant medications. On multivariable regression analysis, LVEDD (HR 1.05, 95% CI 1.004-1.09, P = 0.03), AF/AFL (HR 1.81, 95% CI 1.21-2.72, P = 0.004) and SVT (HR 1.91, 95% CI 1.21-3.01, P = 0.006) were identified as independent predictors of sustained ventricular arrhythmia in patients with ICD and non-ischaemic HF. All-cause mortality in patients with VT/VF was significantly higher than in subjects without sustained ventricular arrhythmias (33% vs. 20%, P = 0.03).
Conclusions
Ventricular arrhythmia occurred in 23.8% of patients with systolic non-ischaemic HF during 4.5 years of observation and was associated with significantly worse prognosis compared with subjects free of VT/VF. Left ventricular dimension, atrial fibrillation/atrial flutter and supraventricular tachycardia were identified as independent predictors for ventricular arrhythmia.
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Affiliation(s)
- E Jedrzejczyk-Patej
- Medical University of Silesia, SCHD, Dpt. of Cardiology, Congenital Heart Disease & Electrotherapy, Zabrze, Poland
| | - M Mazurek
- Medical University of Silesia, SCHD, Dpt. of Cardiology, Congenital Heart Disease & Electrotherapy, Zabrze, Poland
| | - M Lazar
- Medical University of Silesia, SCHD, Dpt. of Cardiology, Congenital Heart Disease & Electrotherapy, Zabrze, Poland
| | - P Pruszkowska-Skrzep
- Medical University of Silesia, SCHD, Dpt. of Cardiology, Congenital Heart Disease & Electrotherapy, Zabrze, Poland
| | - T Podolecki
- Medical University of Silesia, SCHD, Dpt. of Cardiology, Congenital Heart Disease & Electrotherapy, Zabrze, Poland
| | - J Kowalczyk
- Medical University of Silesia, SCHD, Dpt. of Cardiology, Congenital Heart Disease & Electrotherapy, Zabrze, Poland
| | - O Kowalski
- Medical University of Silesia, SCHD, Dpt. of Cardiology, Congenital Heart Disease & Electrotherapy, Zabrze, Poland
| | - Z Kalarus
- Medical University of Silesia, SCHD, Dpt. of Cardiology, Congenital Heart Disease & Electrotherapy, Zabrze, Poland
| | - R Lenarczyk
- Medical University of Silesia, SCHD, Dpt. of Cardiology, Congenital Heart Disease & Electrotherapy, Zabrze, Poland
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Vacarescu C, Luca CT, Petrescu L, Mornos C, Goanta EV, Crisan S, Lazar MA, Cozlac RA, Cozma D. P1168Redefining first degree AV block: constant fusion pacing CRT is easier in longer PR interval patients. Europace 2020. [DOI: 10.1093/europace/euaa162.217] [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: 11/14/2022] Open
Abstract
Abstract
Background
LV only pacing is non-inferior to BiV pacing, and recent publications showed that DDD CRT without RV lead is safe in patients with normal atrioventricular (AV) conduction, although there are no device algorithms available for fusion pacing and PR interval variability is understudied in this population. Purpose: To analyse AV behaviour in pts with DDD CRT and the impact to effective fusion maintenance.
Methods
Consecutive pts with right atrium/left ventricle (RA/LV) DDD CRT pacing system were included. Prospective data were collected at every 6 months follow-up visits: device interrogation, exercise test (ET), echocardiography. CRT assessment during ET analysed loss of LV capture with special focus on maintaining constant fusion pacing during exercise. We defined 2 groups of pts: longer PR interval pts (200-250 ms) and normal PR interval pts (˂200 ms). In case of LV loss of capture or unsatisfactory LV fusion pacing, device reprogramming was performed individualised for each patient and BB/ivabradine dose titration was done to achieve stability of PR spontaneous interval. Patients were rescheduled in no later one month to be reassessed by ET.
Results
55 pts (29 male) aged 62 ± 11 y.o. were included, 36 pts with normal PR and 19 pts with longer PR. During follow-up (45 ± 19 months), a total of 235 ETs were performed with mean exercise load 118 ± 35 watts. In the normal PR group 14 pts (39%) had inadequate pacing or loss of LV capture during ET due to physiological shortening of PR interval vs. 4 pts (21%) in the long PR group. Loss of LV capture by exceeding maximum tracking rate (MTR) was noted in 6 pts (17%) with normal PR vs. 2 pts (11%) with longer PR. Post ET device optimisation included: reprogramming rate adaptive AV interval (23 ± 8 ms decrease in normal PR pts vs. 12 ± 7 ms in longer PR pts, p < 0.0001) and individualised programming of MTR. BB/ivabradine optimisation was performed in 32% of pts with normal PR vs. 13% of pts with longer PR.
Conclusions
A lower rate of optimisations after exercise test was needed in pts with a slightly longer AV conduction to achieve stability of fusion pacing DDD CRT without device algorithms. Larger studies are needed to assess AV conduction variability and the benefits of fusion pacing CRT in pts with longer PR interval.
Abstract Figure.
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Affiliation(s)
- C Vacarescu
- University of Medicine Victor Babes, Timisoara, Romania
| | - C T Luca
- Timisoara Institute of Cardiovascular Medicine, Timisoara, Romania
| | - L Petrescu
- University of Medicine Victor Babes, Cardiology Department, Timisoara, Romania
| | - C Mornos
- Timisoara Institute of Cardiovascular Medicine, Timisoara, Romania
| | - E V Goanta
- University of Medicine Victor Babes, Timisoara, Romania
| | - S Crisan
- Timisoara Institute of Cardiovascular Medicine, Timisoara, Romania
| | - M A Lazar
- University of Medicine Victor Babes, Cardiology Department, Timisoara, Romania
| | - R A Cozlac
- University of Medicine Victor Babes, Cardiology Department, Timisoara, Romania
| | - D Cozma
- Timisoara Institute of Cardiovascular Medicine, Timisoara, Romania
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LaFollette K, Satterfield BC, Esbit S, Lazar M, Grandner MA, Killgore WD. 0316 Emotion Regulation During Sleep Deprivation and Repeated Physiological Stress: Implications for Motor Skill Learning and Production. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.313] [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: 11/14/2022] Open
Abstract
Abstract
Introduction
The ability to perform learned motor procedures under stress is a critical skill for many high-risk occupations. Explicit motor skills require top-down cognitive control, which both sleep loss and stress have been found to produce significant degradations, whereas implicit skills rely less on cognitive control and are more resilient to physiological stress. We investigated whether differences in emotion regulation attenuated the effects of sleep deprivation (SD) and acute stress on discrete motor learning.
Methods
45 adults (21 F; 22 ± 3.4 years) participated in 28-hours of in-lab SD. Participants completed repeated batteries that included the Maastricht Acute Stress Test (MAST) Karolinska Sleepiness Scale (KSS), Psychomotor Vigilance Test (PVT), and Discrete Sequence Production Task (DSP). Stress response was quantified by salivary cortisol. We quantified DSP motor performance by total accurate sequences, and average movement time on accurate trials. Ability emotional intelligence (EI) was measured with the MSCEIT, while trait EI was measured with the Bar-On EQI. The CD-RISC was included as a measure of resilience.
Results
Using linear mixed effects models of motor performance indices, we found subjective, trait-based emotional intelligence (EQI) to be associated with worse motor performance over time, and objective, ability-based emotional intelligence (MSCEIT) to be associated with greater movement speed. We further found that greater psychological resilience (CD-RISC) but not emotional intelligence was predictive of stronger and less variable chunking structures during SD.
Conclusion
Emotional intelligence can influence motor learning under stressful SD, whereas psychological resilience can safeguard learning. Future work should further investigate how trait and ability metrics of EI have opposing effects on responses to stress under SD. Work in this direction could serve to identify difference factors that bolster motor skill production in operational environments where stress and SD are unavoidable.
Support
US Army Medical Research and Development Command: W81XWH-17-C-0088
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Affiliation(s)
| | | | - S Esbit
- University of Arizona, Tucson, AZ
| | - M Lazar
- University of Arizona, Tucson, AZ
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Benea SN, Lazar M, Hristea A, Hrisca RM, Niculae CM, Moroti RV. CENTRAL HYPOTHYROIDISM IN SEVERE SEPSIS. Acta Endocrinol (Buchar) 2020; 15:372-377. [PMID: 32010358 DOI: 10.4183/aeb.2019.372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Objective A partial or complete deficiency of hormone secretion by pituitary gland (hypopituitarism) is commonly seen after a pituitary apoplexy caused by an infarction of a pituitary adenoma or pituitary hyperplasia (as in Sheehan's syndrome). Hypopituitarism may also follow surgery, when hypovolemia, anticoagulation, fat/air/bone marrow microemboli can provoke a pituitary infarction/hemorrhage. Other causes of abrupt hypophyseal hypoperfusion, as hypovolemia during a septic shock, could also contribute. In the last mentioned situation, due to the complex endocrine-immune interrelation, sepsis could be masked and improperly managed. Case report We report a case of a 72 years-old Caucasian woman, previously healthy, who underwent an orthopedic surgery for a femoral fracture. This event apparently triggered a central-origin hypothyroidism, misinterpreted as "post-surgical psychosis", which, in turn, masked a symptomatology of a subsequent severe sepsis. The patient was admitted in the infectious diseases department with a severe gut-origin sepsis, needing surgery and long course antibiotics. The pituitary insufficiency was reversed. Conclusion Pituitary apoplexy is an uncommon but potentially life-threatening disease, and could be precipitated by successive events - in our case an orthopedic surgery and a subsequent severe sepsis. It needs recognizing (has intrinsic severity and could mask other serious conditions), treat and monitor (could progress and/or reverse).
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Affiliation(s)
- S N Benea
- "Prof. Dr. Matei Bals" National Institute of Infectious Diseases, Bucharest, Romania.,"Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
| | - M Lazar
- "Prof. Dr. Matei Bals" National Institute of Infectious Diseases, Bucharest, Romania.,"Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
| | - A Hristea
- "Prof. Dr. Matei Bals" National Institute of Infectious Diseases, Bucharest, Romania.,"Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
| | - R M Hrisca
- "Carol Davila" Military Emergency University Hospital, Bucharest, Romania
| | - C M Niculae
- "Prof. Dr. Matei Bals" National Institute of Infectious Diseases, Bucharest, Romania
| | - R V Moroti
- "Prof. Dr. Matei Bals" National Institute of Infectious Diseases, Bucharest, Romania.,"Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
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Vacarescu C, Petrescu L, Luca CT, Mornos C, Gurgu A, Goanta EV, Crisan S, Lazar MA, Cozlac RA, Cozma D. 416 LV only fusion pacing CRT without RV lead induces size and shape LA reverse remodelling. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.230] [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
Adaptive CRT pacing induces significant left atrium (LA) reverse remodelling comparing to biventricular (BiV) pacing, although the algorithm delivers compulsory BiV pacing in heart rate over 100/min! Purpose: to assess LA remodelling in LV only pacing without RV lead in a real-life situation of permanent CRT fusion pacing.
Methods
Prospective data were analysed from a cohort of patients with CRT-P indication implanted with right atrium/left ventricle (RA/LV) DDD pacing system. Complete follow-up at every 6 months included device interrogation, exercise test, transthoracic echocardiography (TE) and individualised drug optimisation. LA evaluation included: parasternal dimension (LAd), 4 chambers view: mid-LA transverse diameter (LAt), basal LA maximal transverse diameter (LAb); volume (LA vol) and shape assessment: trapezoidal LA shape was defined by LAt less than Lab, the reverse situation was considered ellipsoidal shape.
Results
55 pts (30 males) with idiopathic DCM aged 62 ± 11 y.o. were included. Baseline characteristic: QRS 164 ± 18 ms; EF 27 ± 5.2%; mitral regurgitation was severe in 22 pts, moderate in 27 pts and mild in 6 pts; 15 pts had type III diastolic dysfunction, 37 pts with type II diastolic dysfunction, 3 pts with type I diastolic dysfunction. Average follow-up was 42 ± 18 months: all patients were responders, EF increased at 37 ± 7.9%; mitral regurgitation decreased in 38 pts (69%), diastolic profile improved in 36 pts (65%). Trapezoidal LA shape was documented in 31 (56%) patients. Atrial fibrillation was noted in 4 pts (7%) and cardioversion was needed. Non-sudden cardiac death occurred in 5 patients (9%), all deaths were noted in pts with severe LA vol, trapezoidal shape and type III diastolic dysfunction. Statistically significative LA reverse remodelling was noted regarding LA volume, but not shape.
Conclusions
RA/LV fusion CRT pacing was associated with important LA reverse remodelling and a low incidence of AF. Larger randomised studies are needed to validate these results and assess the role of LA shape remodelling in CRT.
before RA/LV CRT-P Follow-up 42 ± 18 months p LV EF, %, mean ± SD 27 ± 5.2 37 ± 7.9 <0.0001 LA diameter (mm), mean ± SD 50 ± 4.9 44 ± 2.8 <0.0001 LA area (cm2), mean ± SD 24 ± 5.6 22 ± 0.7 0.0138 LA volume (ml), mean ± SD 104.9 ± 34 80 ± 28.2 0.0001
Abstract 416 Figure.
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Affiliation(s)
- C Vacarescu
- University of Medicine Victor Babes, Cardiology , Timisoara, Romania
| | - L Petrescu
- University of Medicine Victor Babes, Cardiology Department, Timisoara, Romania
| | - C T Luca
- Timisoara Institute of Cardiovascular Medicine, Timisoara, Romania
| | - C Mornos
- University of Medicine Victor Babes, Cardiology Department, Timisoara, Romania
| | - A Gurgu
- Timisoara Institute of Cardiovascular Medicine, Timisoara, Romania
| | - E V Goanta
- University of Medicine Victor Babes, Cardiology , Timisoara, Romania
| | - S Crisan
- University of Medicine Victor Babes, Cardiology , Timisoara, Romania
| | - M A Lazar
- University of Medicine Victor Babes, Cardiology , Timisoara, Romania
| | - R A Cozlac
- University of Medicine Victor Babes, Cardiology , Timisoara, Romania
| | - D Cozma
- University of Medicine Victor Babes, Cardiology , Timisoara, Romania
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López RA, Shaaban SM, Lazar M, Poedts S, Yoon PH, Micera A, Lapenta G. Particle-in-cell Simulations of the Whistler Heat-flux Instability in Solar Wind Conditions. Astrophys J Lett 2019; 882:10.3847/2041-8213/ab398b. [PMID: 32042401 PMCID: PMC7008930 DOI: 10.3847/2041-8213/ab398b] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In collision-poor plasmas from space, e.g., solar wind or stellar outflows, the heat flux carried by the strahl or beaming electrons is expected to be regulated by the self-generated instabilities. Recently, simultaneous field and particle observations have indeed revealed enhanced whistler-like fluctuations in the presence of counter-beaming populations of electrons, connecting these fluctuations to the whistler heat-flux instability (WHFI). This instability is predicted only for limited conditions of electron beam-plasmas, and has not yet been captured in numerical simulations. In this Letter we report the first simulations of WHFI in particle-in-cell setups, realistic for the solar wind conditions, and without temperature gradients or anisotropies to trigger the instability in the initiation phase. The velocity distributions have a complex reaction to the enhanced whistler fluctuations conditioning the instability saturation by a decrease of the relative drifts combined with induced (effective) temperature anisotropies (heating the core electrons and pitch-angle and energy scattering the strahl). These results are in good agreement with a recent quasilinear approach, and support therefore a largely accepted belief that WHFI saturates at moderate amplitudes. In the anti-sunward direction the strahl becomes skewed with a pitch-angle distribution decreasing in width as electron energy increases, which seems to be characteristic of self-generated whistlers and not to small-scale turbulence.
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Affiliation(s)
- R A López
- Centre for mathematical Plasma Astrophysics, KU Leuven, Celestijnenlaan 200B, B-3001 Leuven, Belgium
| | - S M Shaaban
- Centre for mathematical Plasma Astrophysics, KU Leuven, Celestijnenlaan 200B, B-3001 Leuven, Belgium
- Theoretical Physics Research Group, Physics Department, Faculty of Science, Mansoura University, 35516, Mansoura, Egypt
| | - M Lazar
- Centre for mathematical Plasma Astrophysics, KU Leuven, Celestijnenlaan 200B, B-3001 Leuven, Belgium
- Institut für Theoretische Physik, Lehrstuhl IV: Weltraum- und Astrophysik, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - S Poedts
- Centre for mathematical Plasma Astrophysics, KU Leuven, Celestijnenlaan 200B, B-3001 Leuven, Belgium
| | - P H Yoon
- Institute for Physical Science and Technology, University of Maryland, College Park, MD, USA
- School of Space Research, Kyung Hee University, Republic of Korea
- Korea Astronomy and Space Science Institute, Daejeon 34055, Republic of Korea
| | - A Micera
- Centre for mathematical Plasma Astrophysics, KU Leuven, Celestijnenlaan 200B, B-3001 Leuven, Belgium
- Solar-Terrestrial Centre of Excellence-SIDC, Royal Observatory of Belgium, B-1180 Brussels, Belgium
| | - G Lapenta
- Centre for mathematical Plasma Astrophysics, KU Leuven, Celestijnenlaan 200B, B-3001 Leuven, Belgium
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14
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Quimby H, Nissley-Tsiopinis J, Lazar M, Rourke M, Zarabba J. C-41 Functional Impairments in Girls with Attention-Deficit Hyperactivity Disorder. Arch Clin Neuropsychol 2019. [DOI: 10.1093/arclin/acz034.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Objective
ADHD is a neurodevelopmental disorder known to cause functional impairments. Few studies have identified impairments specific to girls with ADHD. The objective of this study was to explore the relationship between ADHD subtypes and measures of functional impairment in girls.
Method
Participants were chosen from a sample of girls ages 5 – 18 years old, diagnosed with ADHD at an outpatient ADHD clinic at a large children’s hospital (N = 303). Measures included parent and teacher BASC subscales of adaptability, homework problems, and comorbid clinical diagnoses based on the diagnostic interview for children and adolescents-revised parent version (DICA-R). Potential relationships between impairment measures and ADHD subtypes were assessed using multiple and logistic regressions to control for age and socioeconomic status (SES).
Results
Number of inattentive ADHD symptoms correlates positively with DICA diagnosis of ODD (x2 = 4.008, p = 0.045) and homework problems (r = 0.227, p = 0.0001). Number of combined ADHD symptoms is positively associated with DICA diagnosis of ODD (x2 = 26.812, p = 0.0001) and homework problems (r = 0.171, p = 0.0001) and negatively associated with parent reported social skills (r = 0.092, p = 0.006), adaptability (r = 0.146, p = 0.001) and teacher reported adaptability (r = 0.057, p = 0.01), after controlling for age and SES.
Discussion
Girls with ADHD exhibit functional impairments in the domains of comorbid diagnoses, homework problems, parent and teacher report of adaptability, and parent report of social skills. Additional research should include self-reports of functional impairment to determine self-perception of impairment.
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Chagpar AB, Tsangaris T, Garcia-Cantu C, Howard-McNatt M, Chiba A, Berger AC, Levine E, Gass JS, Gallagher K, Lum SS, Martinez RD, Willis AI, Pandya SV, Brown EA, Fenton A, Mendiola A, Murray M, Haddad V, Solomon NL, Senthil M, Bansil H, Ollila D, Snyder SK, Edmonson D, Lazar M, Namm JP, Li F, Butler M, McGowan NE, Herrera ME, Avitan YP, Yoder B, Dupont E. Abstract PD8-07: Does resection of cavity shave margins result in lower positive margin and re-excision rates in patients with stage 0-III breast cancer? Results from a prospective multicenter randomized controlled trial. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-pd8-07] [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: 11/16/2022]
Abstract
Abstract
INTRODUCTION: Routine resection of cavity shave margins has been shown in single center studies to result in a significant reduction in positive margin and re-excision rates. In this prospective multicenter randomized controlled trial, we sought to validate these findings across practice settings.
METHODS: Nine centers across the United States, varying in practice setting and patient population, participated in this clinical trial of 398 stage 0-III breast cancer patients undergoing partial mastectomy (with or without resection of selective cavity margins). Participants were stratified by clinical stage and randomized 1:1 to either have routine cavity shave margins resected (“shave”) or not (“no shave”). Randomization group was revealed to the surgeon intraoperatively, after they had completed their standard partial mastectomy and were ready to close. Positive margins were defined as “tumor at ink” for invasive cancer or within 2 mm for ductal carcinoma in situ (DCIS). Adverse events were defined as seromas requiring percutaneous drainage, and/or hematomas or abscesses requiring operative intervention.
RESULTS: Median patient age was 65 (range; 29-94). 116 patients had invasive disease, 74 had DCIS, 179 had both, and 29 had no residual cancer at the time of partial mastectomy. The median invasive cancer size was 1.2 cm (range; 0.05-8.00 cm); the median extent of DCIS was 0.9 cm (range; 0.05-6.40 cm). The “shave” and “no shave” groups were well matched at baseline for clinicopathologic and demographic factors.
FactorShave (n=197)No Shave (n=201)p-valueAge (years); median (range)67 (36-94)64 (29-89)0.585Race 0.062-- White173 (87.8%)164 (81.6%) -- Black20 (10.2%)33 (16.4%) -- Asian2 (1.0%)2 (1.0%) -- Native American0 (0%)2 (1.0%) -- Unknown/Declined2 (1.0%)0 (0%) Hispanic ethnicity28 (14.2%)32 (15.9%)0.806Invasive tumor size (cm); median (range)1.30 (0.09-8.00)1.20 (0.05-7.50)0.282DCIS extent (cm); median (range)0.80 (0.10-6.40)1.00 (0.05-5.50)0.906Invasive histology 0.556-- Ductal177 (89.8%)186 (92.5%) -- Lobular16 (8.1%)13 (6.5%) -- Mucinous3 (1.5%)2 (1.0%) -- Other1 (0.5%)0 (0%) Neoadjuvant therapy15 (7.6%)19 (9.5%)0.592Palpable tumor57 (28.9%)56 (27.9%)0.825Node positive*24 (16.3%)16 (10.6%)0.175*Of the 298 patients who had lymph nodes evaluated
Prior to randomization, positive margin rates were similar in the “shave” and “no shave” groups (38.1% vs. 37.3%, respectively, p=0.918). After randomization, however, those in the “shave” group were significantly less likely than those in the “no shave” group to have positive margins (8.6% vs. 37.3%, respectively, p<0.001). They were also less likely to require re-excision or mastectomy for margin clearance (8.6% vs. 23.9%, p<0.001). There were no significant differences between the two groups in terms of adverse events (p=0.280). Rates of seroma (1.5% vs. 0.5%, p=0.368), hematoma (0.5% vs. 0.5%, p=1.000) and abscess (0.3% vs. 0%, p=0.495) were similar between the “shave” and “no shave” groups, respectively.
CONCLUSION: Resection of cavity shave margins significantly reduces positive margin and re-excision rates in patients with stage 0-III breast cancer undergoing partial mastectomy.
Citation Format: Chagpar AB, Tsangaris T, Garcia-Cantu C, Howard-McNatt M, Chiba A, Berger AC, Levine E, Gass JS, Gallagher K, Lum SS, Martinez RD, Willis AI, Pandya SV, Brown EA, Fenton A, Mendiola A, Murray M, Haddad V, Solomon NL, Senthil M, Bansil H, Ollila D, Snyder SK, Edmonson D, Lazar M, Namm JP, Li F, Butler M, McGowan NE, Herrera ME, Avitan YP, Yoder B, Dupont E. Does resection of cavity shave margins result in lower positive margin and re-excision rates in patients with stage 0-III breast cancer? Results from a prospective multicenter randomized controlled trial [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr PD8-07.
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Affiliation(s)
- AB Chagpar
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - T Tsangaris
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - C Garcia-Cantu
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - M Howard-McNatt
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - A Chiba
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - AC Berger
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - E Levine
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - JS Gass
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - K Gallagher
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - SS Lum
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - RD Martinez
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - AI Willis
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - SV Pandya
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - EA Brown
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - A Fenton
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - A Mendiola
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - M Murray
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - V Haddad
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - NL Solomon
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - M Senthil
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - H Bansil
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - D Ollila
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - SK Snyder
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - D Edmonson
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - M Lazar
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - JP Namm
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - F Li
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - M Butler
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - NE McGowan
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - ME Herrera
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - YP Avitan
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - B Yoder
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
| | - E Dupont
- Yale University, New Haven, CT; Thomas Jefferson University, Philadelphia, PA; Doctors Hospital at Renaissance, Edinburg, TX; Wake Forest University, Winston-Salem, NC; Women and Infrants Hospital, Providence, RI; University of North Carolina, Chapel Hill, NC; Loma Linda University, Loma Linda, CA; Beaumont Hospital, Troy, MI; Cleveland Clinic Akron General, Akron, OH; Watson Clinic, Lakeland, FL; MicroPath Laboratories, Lakeland, FL
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Negru AR, Tiliscan C, Tudor AM, Munteanu DI, Popescu C, Lazar M, Streinu-Cercel A, Arama V, Arama SS. BONE QUALITY IN A YOUNG COHORT OF HIV-POSITIVE PATIENTS. Acta Endocrinol (Buchar) 2019; 15:447-453. [PMID: 32377241 DOI: 10.4183/aeb.2019.447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Context In HIV+ patients, several factors related to patient and antiretroviral therapy (ART) could determine early onset of bone mineral density (BMD) disturbances. Objective Evaluation of bone quality according to gender in patients from the HIV Romanian cohort. Design A cross-sectional study in "Prof. Dr. Matei Balş" National Institute for Infectious Diseases, Bucharest between 2016-2018. Subject and Methods We collected data regarding HIV infection, ART history, viral hepatitis co-infections and we calculated patients body mass index (BMI). CD4 cell count, HIV viral load (VL), vitamin-D levels were determined. Dual-energy X-ray absorptiometry (DXA) scans were used to evaluate BMD. Results We enrolled 97 patients with the median age of 26 years. According to the DXA T-scores, 10 males and 8 females had osteopenia and 4 males and 4 females had osteoporosis. According to Z-scores 2 males and 1 female had osteoporosis. Hip DXA T-scores revealed osteopenia in 6 males and 9 females, whereas T and Z-scores showed osteoporosis in 2 males and 3 females. Lumbar spine (LS) T-score diagnosed osteopenia in 9 males and 6 females, while T and Z-scores revealed osteoporosis in 3 males and females. In males, low T-scores were associated with decreased BMI; low LS DXA Z-scores with low vitamin-D levels; low T and Z-scores and LS-BMD with high VL. Conclusions Evaluating bone quality in patients with a long history of HIV infection, multiple factors should be taken into account.
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Affiliation(s)
- A R Negru
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,"Prof. Dr. Matei Balş" National Institute of Infectious Diseases, Bucharest, Romania
| | - C Tiliscan
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,"Prof. Dr. Matei Balş" National Institute of Infectious Diseases, Bucharest, Romania
| | - A M Tudor
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,"Prof. Dr. Matei Balş" National Institute of Infectious Diseases, Bucharest, Romania
| | - D I Munteanu
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,"Prof. Dr. Matei Balş" National Institute of Infectious Diseases, Bucharest, Romania
| | - C Popescu
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,"Prof. Dr. Matei Balş" National Institute of Infectious Diseases, Bucharest, Romania
| | - M Lazar
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,"Prof. Dr. Matei Balş" National Institute of Infectious Diseases, Bucharest, Romania
| | - A Streinu-Cercel
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,"Prof. Dr. Matei Balş" National Institute of Infectious Diseases, Bucharest, Romania
| | - V Arama
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,"Prof. Dr. Matei Balş" National Institute of Infectious Diseases, Bucharest, Romania
| | - S S Arama
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,"Prof. Dr. Matei Balş" National Institute of Infectious Diseases, Bucharest, Romania
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Hill D, Lim H, Foong Y, Nelson V, Won K, Lazar M. OR043 Obesity disrupts tissue-protective macrophage populations in the adipose and lung. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.08.043] [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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Villemain O, Takahashi L, Piro VR, Hu K, Amzulescu MS, Hjertaas JJ, Mornos C, Zaar DVJ, Correia M, Mousseaux E, Baranger J, Zarka S, Pernot M, Messas E, Uejima T, Nishikawa H, Semba H, Sawada H, Yamashita T, Piro O, Piro N, Liu D, Oder D, Herrmann S, Ertl G, Weidemann F, Wanner C, Stoerk S, Nordbeck P, Langet H, Saloux E, Manrique A, Boileau L, Slimani A, Allain P, Roy C, Pasquet A, De Craene M, Vancraeynest D, Pouleur AC, Vanoverschelde JL, Gerber BLM, Matre K, Ionac A, Petrescu L, Mornos A, Lazar M, Sosdean R, Cozma D, Van Mourik M, Smulders MW, Passos VL, Schalla S, Knackstedt C, Schummers G, Gjesdal O, Edvardsen T, Bekkers SC. Rapid Fire Abstract: Emerging imaging techniques303Myocardial stiffness assessment using shear wave imaging in healthy adult population302Intracardiac vortex intensity predicts early decompensation in dilated cardiomyopathy304A quantitative and qualitative characterization of the intraventricular blood flow of the normal human left ventricle using a contrast-tracking echo-PIV technique305Speckle tracking derived diastolic strain rate is an independent determinant of cardiac magnetic resonance detected myocardial fibrosis in patients with Fabry disease306Head to head comparison of global and regional 2D speckle tracking strain vs cardiac magnetic resonance tagging in a multicenter validation study307A twisting left ventricular ultrasound phantom for evaluation of 3D speckle tracking twist measurements308A new 2D-strain index to improve cardiovascular risk stratification in heart failure with reduced and mid-range ejection fraction309Adding speckle tracking echocardiography to visual assessment improves the detection of chronic myocardial infarction. Eur Heart J Cardiovasc Imaging 2016. [DOI: 10.1093/ehjci/jew237] [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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Meyer EJ, Kirov II, Tal A, Davitz MS, Babb JS, Lazar M, Malaspina D, Gonen O. Metabolic Abnormalities in the Hippocampus of Patients with Schizophrenia: A 3D Multivoxel MR Spectroscopic Imaging Study at 3T. AJNR Am J Neuroradiol 2016; 37:2273-2279. [PMID: 27444940 DOI: 10.3174/ajnr.a4886] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [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: 03/31/2016] [Accepted: 06/03/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Schizophrenia is well-known to be associated with hippocampal structural abnormalities. We used 1H-MR spectroscopy to test the hypothesis that these abnormalities are accompanied by NAA deficits, reflecting neuronal dysfunction, in patients compared with healthy controls. MATERIALS AND METHODS Nineteen patients with schizophrenia (11 men; mean age, 40.6 ± 10.1 years; mean disease duration, 19.5 ± 10.5 years) and 11 matched healthy controls (5 men; mean age, 33.7 ± 10.1 years) underwent MR imaging and multivoxel point-resolved spectroscopy (TE/TR, 35/1400 ms) 1H-MRS at 3T to obtain their hippocampal GM absolute NAA, Cr, Cho, and mIns concentrations. Unequal variance t tests and ANCOVA were used to compare patients with controls. Bilateral volumes from manually outlined hippocampal masks were compared by using unequal variance t tests. RESULTS Patients' average hippocampal GM Cr concentrations were 19% higher than that of controls, 8.7 ± 2.2 versus 7.4 ± 1.2 mmol/L (P < .05); showing no differences, concentrations in NAA were 8.8 ± 1.6 versus 8.7 ± 1.2 mmol/L; in Cho, 2.3 ± 0.7 versus 2.1 ± 0.3 mmol/L; and in mIns, 6.1 ± 1.5 versus 5.2 ± 0.9 (all P > .1). There was a positive correlation between mIns and Cr in patients (r = 0.57, P = .05) but not in controls. The mean bilateral hippocampal volume was ∼10% lower in patients: 7.5 ± 0.9 versus 8.4 ± 0.7 cm3 (P < .05). CONCLUSIONS These findings suggest that the hippocampal volume deficit in schizophrenia is not due to net loss of neurons, in agreement with histopathology studies but not with prior 1H-MR spectroscopy reports. Elevated Cr is consistent with hippocampal hypermetabolism, and its correlation with mIns may also suggest an inflammatory process affecting some cases; these findings may suggest treatment targets and markers to monitor them.
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Affiliation(s)
- E J Meyer
- From the Department of Radiology (E.J.M., I.I.K., M.S.D., J.S.B., M.L., O.G.), Center for Advanced Imaging Innovation and Research, Bernard and Irene Schwartz Center for Biomedical Imaging
| | - I I Kirov
- From the Department of Radiology (E.J.M., I.I.K., M.S.D., J.S.B., M.L., O.G.), Center for Advanced Imaging Innovation and Research, Bernard and Irene Schwartz Center for Biomedical Imaging
| | - A Tal
- Department of Chemical Physics (A.T.), Weizmann Institute of Science, Rehovot, Israel
| | - M S Davitz
- From the Department of Radiology (E.J.M., I.I.K., M.S.D., J.S.B., M.L., O.G.), Center for Advanced Imaging Innovation and Research, Bernard and Irene Schwartz Center for Biomedical Imaging
| | - J S Babb
- From the Department of Radiology (E.J.M., I.I.K., M.S.D., J.S.B., M.L., O.G.), Center for Advanced Imaging Innovation and Research, Bernard and Irene Schwartz Center for Biomedical Imaging
| | - M Lazar
- From the Department of Radiology (E.J.M., I.I.K., M.S.D., J.S.B., M.L., O.G.), Center for Advanced Imaging Innovation and Research, Bernard and Irene Schwartz Center for Biomedical Imaging
| | - D Malaspina
- Department of Psychiatry (D.M.), Institute for Social and Psychiatric Initiatives, New York University School of Medicine, New York, New York
| | - O Gonen
- From the Department of Radiology (E.J.M., I.I.K., M.S.D., J.S.B., M.L., O.G.), Center for Advanced Imaging Innovation and Research, Bernard and Irene Schwartz Center for Biomedical Imaging
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Gurgel-Giannetti J, Yamamoto G, Lazar M, Machado M, Tavares W, Pavanello R, Oliveira A, Zatz M, Vainzof M. Nemaline myopathy: Clinical, pathological, muscle imaging and molecular characterization in a cohort of Brazilian patients. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.170] [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: 10/21/2022]
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Liu F, Millar S, LeBoeuf M, Lazar M. 673 Histone Deacetylase 3 coordinates protein and lipid synthesis to establish a functional epidermal barrier. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.715] [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: 11/28/2022]
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Issa F, Vervisch V, Ottaviani L, Szalkai D, Vermeeren L, Lyoussi A, Kuznetsov A, Lazar M, Klix A, Palais O, Hallén A. Improvements in Realizing 4H-SiC Thermal Neutron Detectors. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201610605004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Gurgel-Giannetti J, Concentino E, Lazar M, Van der Linden V, Giannetti A, Fernandes F, Campos W, Vainzof M. Next generation sequencing (NGS): A powerful tool for studying rigid spine patients and multiminicore myopathy. Neuromuscul Disord 2015. [DOI: 10.1016/j.nmd.2015.06.302] [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: 11/28/2022]
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Zatz M, Pavanello R, Lazar M, Yamamoto G, Lourenço N, Cerqueira A, Nogueira L, Vainzof M. Milder course in Duchenne patients with nonsense mutations and no muscle dystrophin. Neuromuscul Disord 2014; 24:986-9. [DOI: 10.1016/j.nmd.2014.06.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 06/01/2014] [Indexed: 11/25/2022]
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Hsieh A, Altman B, Stine Z, Gouw A, Venkataraman A, Li B, Goraksha-Hicks P, Diskin S, Bellovin D, Celeste Simon M, Rathmell J, Lazar M, Maris J, Felsher D, Hogenesch J, Dang C. TM-06 * MYC AND MYCN DISRUPTION OF THE MOLECULAR CLOCK IN CANCER CELLS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou278.6] [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: 11/14/2022] Open
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Toss A, Berger A, Guiles F, Sendecki J, Simone N, Anne P, Avery T, Jaslow R, Palazzo J, Lazar M, Tsangaris T, Cristofanilli M. Preventive Tamoxifen After Ductal Carcinoma in Situ (Dcis) Diagnosis According to Age and Ethnicity. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu327.55] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Necula G, Lazar M, Stanescu A, Pistol A, Santibanez S, Mankertz A, Lupulescu E. Transmission and molecular characterisation of wild measles virus in Romania, 2008 to 2012. ACTA ACUST UNITED AC 2013; 18:20658. [PMID: 24342518 DOI: 10.2807/1560-7917.es2013.18.50.20658] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Molecular characterisation of measles virus is a powerful tool for tracing transmission. Genotyping may prove the absence of endemic circulation of measles virus, i.e. transmission for more than 12 months, which is one of the criteria for verifying elimination of the disease. We have genetically characterised measles viruses detected in Romania from 2008 to 2012, focusing on the recent outbreaks from 2010 to 2012 that affected mainly groups with limited access to healthcare and schools. The findings emphasise the importance of genotyping during the different phases of an outbreak. A total of 8,170 cases were notified, and 5,093 (62%) of the 7,559 possible cases were serologically confirmed. RT-PCR was performed for 104 samples: from the 101 positive samples obtained from sporadic measles cases or clusters from different counties, 73 were genotyped. Sporadic measles cases associated with D4 and D5 viruses were observed from2008 to 2009. Genotype D4-Manchester was predominant in 2011 and 2012. In addition, the related variant D4-Maramures and MVs/Limoges.FRA/17.10[D4] and a few D4-Hamburg strains were detected. The detection of several distinct MV-D4 genotypes suggests multiple virus importations to Romania. The outbreak associated with D4 genotype is the second largest outbreak in Romania in less than 10 years.
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Affiliation(s)
- G Necula
- National Reference Laboratory for Measles and Rubella and National Influenza Center, Cantacuzino Institute, Bucharest, Romania
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Paydar A, Fieremans E, Nwankwo JI, Lazar M, Sheth HD, Adisetiyo V, Helpern JA, Jensen JH, Milla SS. Diffusional kurtosis imaging of the developing brain. AJNR Am J Neuroradiol 2013; 35:808-14. [PMID: 24231848 DOI: 10.3174/ajnr.a3764] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Diffusional kurtosis imaging is an extension of DTI but includes non-Gaussian diffusion effects, allowing more comprehensive characterization of microstructural changes during brain development. Our purpose was to use diffusional kurtosis imaging to measure age-related microstructural changes in both the WM and GM of the developing human brain. MATERIALS AND METHODS Diffusional kurtosis imaging was performed in 59 subjects ranging from birth to 4 years 7 months of age. Diffusion metrics, fractional anisotropy, and mean kurtosis were collected from VOIs within multiple WM and GM structures and subsequently analyzed with respect to age. Diffusional kurtosis tractography images at various stages of development were also generated. RESULTS Fractional anisotropy and mean kurtosis both showed age-related increases in all WM regions, reflecting progression of diffusional anisotropy throughout development, predominantly in the first 2 years of life (eg, 70% and 157% increase in fractional anisotropy and mean kurtosis, respectively, from birth to 2 years for the splenium). However, mean kurtosis detected continued microstructural changes in WM past the fractional anisotropy plateau, accounting for more delayed isotropic changes (eg, 90% of maximum fractional anisotropy was reached at 5 months, whereas 90% of maximum mean kurtosis occurred at 18 months for the external capsule). Mean kurtosis may also provide greater characterization of GM maturation (eg, the putamen showed no change in fractional anisotropy but an 81% change in mean kurtosis from birth to 4 years 7 months). CONCLUSIONS Mean kurtosis detects significant microstructural changes consistent with known patterns of brain maturation. In comparison with fractional anisotropy, mean kurtosis may offer a more comprehensive evaluation of age-related microstructural changes in both WM and GM and is potentially a valuable technique for studying brain development.
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Affiliation(s)
- A Paydar
- From the Department of Radiology (A.P., E.F., J.I.N., M.L., H.D.S., V.A., S.S.M.), Center for Biomedical Imaging, New York University School of Medicine, New York, New York
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Abstract
Comparative research concerning masticatory musculature in squirrel, muskrat and rabbit, take into account the emphasizing and morphofunctional interpretation of the osteomuscular particularities involved in the prehension and mastication processes. The development of the coronoid process on the muskrat and squirrel demonstrates the growing of the force when raising the mandible by increasing the action force attached to the temporal muscle, with insertion on the coronoid process. In comparison with that, in the case of rabbits, both the coronoid process and the temporal muscle are reduced. From a philogenetic point of view, it has been found that the species that have the articular condyle lowered at or under the level of the dental tables (carnivores) present a greater pressure force between the dental tables. Analyzing this aspect of the rodents taken into discussion, we noticed the lowering of the articular condyle up to the inferior molars' plane, in the case of squirrels and muskrats, but through obliquity, namely through cranial caudal and dorsoventral movement. This peculiarity is emphasized through the analysis of the angle formed by the axis of the mandible recurved branch (passing through the mandibular condyle) with the axis of the horizontal branch of the mandible, where it was noticed that along with the increase in the angle formed by the two axes, which becomes an obtuse 160 degree angle on the squirrel and 130 degrees on the muskrat, there is also a lowering of the articular condyle up to the molar level, while in the case of carnivores, the lowering of the condyle is done without the modification of the angle between the two axes, which measures approximately 90 degrees.
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Affiliation(s)
| | | | - V. Vulpe
- Faculty of Veterinary Medicine, Romania
| | - M. Lazar
- Faculty of Veterinary Medicine, Romania
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Lamb K, Cowan SW, Evans N, Pitcher H, Moritz T, Lazar M, Hirose H, Cavarocchi NC. Successful management of bleeding complications in patients supported with extracorporeal membrane oxygenation with primary respiratory failure. Perfusion 2012; 28:125-31. [DOI: 10.1177/0267659112464096] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: Extracorporeal membrane oxygenation (ECMO) is a lifesaving procedure in patients with severe respiratory insufficiency failing conventional support. Bleeding complications are common due to the necessity for anticoagulation and circuit-related factors. Methods: A retrospective review was conducted in patients requiring ECMO for respiratory failure from 7/2010 to 6/2011 to identify episodes of major bleeding, bleeding management and outcomes. Results: Twenty-one patients were supported with ECMO during the study although five experienced massive bleeding related to chest tube insertion, jejunal arterio-venous malformations, distal perfusion cannula dislodgement and ventricular rupture. Patients required aggressive resuscitation or endoscopic or operative intervention, totaling 28 procedures. There were no instances of dehiscence, infection or sepsis related to interventions. Anticoagulation was stopped six hours before and restarted 24 hours after major interventions, with no thrombotic or neurologic complications. All patients weaned off ECMO were discharged. Conclusions: ECMO bleeding complications can be managed successfully via surgical and endoscopic approaches in this high-risk population.
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Affiliation(s)
- K Lamb
- Department of Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - SW Cowan
- Department of Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - N Evans
- Department of Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - H Pitcher
- Department of Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - T Moritz
- Department of Surgery, Penn State Hershey Medical Center, Hershey, PA, USA
| | - M Lazar
- Department of Surgery, Penn State Hershey Medical Center, Hershey, PA, USA
| | - H Hirose
- Department of Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - NC Cavarocchi
- Department of Surgery, Thomas Jefferson University, Philadelphia, PA, USA
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Abstract
Morphological investigations were conducted on four bodies of dogs who died due to severe clinical symptoms following a massive invasion of cardiac and pulmonary Dirofilaria. The subjects were monitored clinically and diagnosed serologically positive for the Heartworm disease. The necropsy examination of the cardiovascular system (right ventricle and pulmonary artery) revealed the presence of 25 adult parasites in one dog with length ranging between 8 and 33cm. Macroscopically, lesions consistently observed were represented by the right ventricular dilatation and the diffuse wall thickening of the pulmonary artery. Parasitic invasion secondary lesions were present in the lungs, liver and kidneys (cardiac and vascular lesions). The histological examination mainly revealed myocardial injury, vascular (dystrophic), pulmonary (circulatory and inflammatory), hepatic (degenerative) and renal (degenerative and inflammatory) damage.
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Affiliation(s)
- S.A. Pasca
- Ion Ionescu de la Brad University, Romania
| | | | | | - M. Lazar
- Ion Ionescu de la Brad University, Romania
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Wang J, Chipitsyna G, Lazar M, Hyslop T, Chu M, Relles D, Yeo C, Arafat H. Clinical Significance of Serum COL6A3 in Pancreatic Ductal Adenocarcinoma. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.548] [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: 10/14/2022]
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Roger A, Hanf M, Dufour J, Basurko C, Lazar M, Sainte-Marie D, Simon S, Nacher M, Carme B, Couppié P. Climat et leishmaniose cutanée en Guyane. Étude à partir d’une série de 1302 patients vus entre 1994 et 2010. Ann Dermatol Venereol 2011. [DOI: 10.1016/j.annder.2011.10.299] [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: 10/15/2022]
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Dufour J, Lelièvre L, Santa F, Fior A, Berlioz M, Lazar M, Sainte-Marie D, Louvel D, Couppié P. Manifestations viscérales de la lèpre : deux observations en Guyane. Ann Dermatol Venereol 2011. [DOI: 10.1016/j.annder.2011.10.313] [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: 10/15/2022]
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Schlickeiser R, Michno MJ, Ibscher D, Lazar M, Skoda T. Modified temperature-anisotropy instability thresholds in the solar wind. Phys Rev Lett 2011; 107:201102. [PMID: 22181719 DOI: 10.1103/physrevlett.107.201102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Indexed: 05/31/2023]
Abstract
The proton and electron temperature anisotropies in the solar wind are constrained by the instability thresholds for temperature-anisotropy-driven kinetic plasma instabilities. The modifications to the marginal instability conditions from accounting for the influence of damping connected with the collisional effects in the solar wind plasma are calculated for right- and left-handed polarized parallel propagating Alfvén waves and mirror and firehose fluctuations. These modifications provide tighter threshold constraints compared to the marginal thresholds but do not fully explain the observations at small values of the parallel plasma beta.
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Affiliation(s)
- R Schlickeiser
- Institut für Theoretische Physik, Lehrstuhl IV: Weltraum- und Astrophysik, Ruhr-Universität Bochum, Germany
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Sun Z, Feng D, Everett LJ, Bugge A, Lazar MA. Circadian epigenomic remodeling and hepatic lipogenesis: lessons from HDAC3. Cold Spring Harb Symp Quant Biol 2011; 76:49-55. [PMID: 21900149 DOI: 10.1101/sqb.2011.76.011494] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Circadian rhythms have evolved to anticipate metabolic needs across the 24-h light/dark cycle. This is accomplished by circadian expression of metabolic genes orchestrated by transcription factors through chromatin remodeling and histone modifications. Our recent genome-wide study on histone deacetylase 3 (HDAC3) in mouse liver provides novel insights into the molecular link between circadian rhythm and hepatic de novo lipogenesis. We found that liver-specific knockout of HDAC3 in adult mouse displays severe hepatic steatosis associated with enhanced de novo lipogenesis and increased expression of lipogenic genes. Genome-wide analysis (ChIP-seq) revealed a pronounced circadian pattern of HDAC3 occupancy on genes involved in lipid metabolism, which is inversely related to histone acetylation and RNA polymerase II recruitment at these sites. The cistromes of HDAC3 and its binding partner, nuclear receptor corepressor (NCoR), significantly overlap with that of Rev-erbα, a nuclear receptor directly involved in the core circadian machinery. Knockout of Rev-erbα in mouse also leads to hepatic steatosis and enhanced de novo lipogenesis. Collectively, these data suggest that the circadian epigenomic remodeling controlled by HDAC3, and largely directed by Rev-erbα, is essential for homeostasis of the lipogenic process in liver.
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Affiliation(s)
- Z Sun
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, and The Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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37
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Varlotto J, Medford-Davis LN, Recht A, Flickinger J, Schaefer E, Shelkey J, Lazar M, Campbell D, Nikolov M, Decamp MM. Confirmation of the role of diabetes in the local recurrence of surgically resected non-small cell lung cancer. Lung Cancer 2011; 75:381-90. [PMID: 21864933 DOI: 10.1016/j.lungcan.2011.07.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 07/21/2011] [Accepted: 07/25/2011] [Indexed: 12/18/2022]
Abstract
PURPOSE We recently demonstrated that diabetes mellitus was an independent risk factor for local recurrence (LR) for patients undergoing resection of non-small cell lung cancer (NSCLC). This investigation was performed to confirm or refute this finding in a different patient cohort. MATERIALS AND METHODS Patients were eligible if they did not have a second primary cancer within 5 years of the original diagnosis, had at least 3-month follow-up, and did not receive radiotherapy. There were 373 and 168 patients in the original (P1) and confirmatory (P2) cohorts, respectively, with 66 and 30 patients with diabetes. RESULTS The median follow-up was 33 months (range, 3-98 months). Diabetes was an independent risk factor for LR in a Cox model in both the P2 (p=0.05, hazard ratio [HR] 2.15) and P1 (p=0.008, HR 1.90) cohorts, separately from BMI, glucose control, and the presence of the metabolic syndrome. The rates of LR in the patients with diabetes after combining the cohorts at 2, 3, and 5 years were 23%, 33%, and 56%, respectively; these rates were 15%, 19%, and 26% in non-diabetics. In multivariate Cox regression and competing risk analysis of the combined cohorts, the HRs for LR in patients with diabetes exceeded those of more established risk factors for LR including a 1-cm increase in tumor size and lymphovascular invasion. CONCLUSIONS Diabetes was confirmed to be an independent predictor of the risk of LR following resection of NSCLC.
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Affiliation(s)
- J Varlotto
- Penn State Hershey Cancer Institute, Hershey, PA 17033-0850, USA.
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Stanescu A, Janta D, Lupulescu E, Necula G, Lazar M, Molnar G, Pistol A. Ongoing measles outbreak in Romania, 2011. Euro Surveill 2011; 16:19932. [PMID: 21871218] [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: 05/31/2023] Open
Abstract
Since January 2011 Romania has been experiencing a measles outbreak with 2,072 cases notified in 29 of the 42 Romanian districts. Most cases occurred in the north-western part of the country among unvaccinated children with the highest number of cases (893 cases) registered in children aged one to four years. This report underlines once more the need for additional measures targeting susceptible populations to achieve high vaccination coverage with two doses of measles-mumps-rubella vaccine.
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Affiliation(s)
- A Stanescu
- National Institute of Public Health, National Centre for Communicable Diseases Surveillance and Control, Bucharest, Romania.
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Abstract
Since January 2011 Romania has been experiencing a measles outbreak with 2,072 cases notified in 29 of the 42 Romanian districts. Most cases occurred in the north-western part of the country among unvaccinated children with the highest number of cases (893 cases) registered in children aged one to four years. This report underlines once more the need for additional measures targeting susceptible populations to achieve high vaccination coverage with two doses of measles-mumps-rubella vaccine.
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Affiliation(s)
- A Stanescu
- These authors contributed equally to this work
- National Institute of Public Health, National Centre for Communicable Diseases Surveillance and Control, Bucharest, Romania
| | - D Janta
- National Institute of Public Health, National Centre for Communicable Diseases Surveillance and Control, Bucharest, Romania
- These authors contributed equally to this work
| | - E Lupulescu
- National Institute of Research and Development for Microbiology and Immunology ‘Cantacuzino’ – National Reference Laboratory for Measles and Rubella, Bucharest, Romania
| | - G Necula
- National Institute of Research and Development for Microbiology and Immunology ‘Cantacuzino’ – National Reference Laboratory for Measles and Rubella, Bucharest, Romania
| | - M Lazar
- National Institute of Research and Development for Microbiology and Immunology ‘Cantacuzino’ – National Reference Laboratory for Measles and Rubella, Bucharest, Romania
| | - G Molnar
- Ministry of Health, Bucharest, Romania
| | - A Pistol
- These authors contributed equally to this work
- National Institute of Public Health, National Centre for Communicable Diseases Surveillance and Control, Bucharest, Romania
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Witte N, Münzner M, Briggs ER, Lazar MA, Schupp M. Rolle der Retinol Saturase im hepatischen Glukose-und Fettstoffwechsel. DIABETOL STOFFWECHS 2011. [DOI: 10.1055/s-0031-1277339] [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: 10/18/2022]
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41
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Caruntu C, Lazar M, Di Cairano S, Gielen R, van den Bosch P. Horizon-1 predictive control of networked controlled vehicle drivetrains. ACTA ACUST UNITED AC 2011. [DOI: 10.3182/20110828-6-it-1002.02780] [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] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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42
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43
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Heemels WPMH, De Schutter B, Lunze J, Lazar M. Stability analysis and controller synthesis for hybrid dynamical systems. Philos Trans A Math Phys Eng Sci 2010; 368:4937-4960. [PMID: 20921005 DOI: 10.1098/rsta.2010.0187] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Wherever continuous and discrete dynamics interact, hybrid systems arise. This is especially the case in many technological systems in which logic decision-making and embedded control actions are combined with continuous physical processes. Also for many mechanical, biological, electrical and economical systems the use of hybrid models is essential to adequately describe their behaviour. To capture the evolution of these systems, mathematical models are needed that combine in one way or another the dynamics of the continuous parts of the system with the dynamics of the logic and discrete parts. These mathematical models come in all kinds of variations, but basically consist of some form of differential or difference equations on the one hand and automata or other discrete-event models on the other hand. The collection of analysis and synthesis techniques based on these models forms the research area of hybrid systems theory, which plays an important role in the multi-disciplinary design of many technological systems that surround us. This paper presents an overview from the perspective of the control community on modelling, analysis and control design for hybrid dynamical systems and surveys the major research lines in this appealing and lively research area.
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Affiliation(s)
- W P M H Heemels
- Hybrid and Networked Systems Group, Department of Mechanical Engineering, Eindhoven University of Technology, PO Box 513, NL-5600 MB Eindhoven, The Netherlands.
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Stanescu A, Muscat M, Romaniuc A, Pipirigeanu R, Lupulescu E, Necula G, Lazar M, Molnar G, Pistol A. Spotlight on measles 2010: An ongoing measles outbreak in the district of Neamt, Romania, August –September 2010. Euro Surveill 2010; 15. [DOI: 10.2807/ese.15.40.19682-en] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We report an outbreak of measles that has been ongoing in the district of Neamt, Romania, since 22 August 2010. As of 21 September, 17 of 21 suspected cases have been laboratory-confirmed and there was one measles-related fatality.
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Affiliation(s)
- A Stanescu
- These authors contributed equally to this work
- National Institute of Public Health, National Centre for Communicable Diseases Surveillance and Control, Bucharest, Romania
| | - M Muscat
- EUVAC.NET hub, Department of Epidemiology, Statens Serum Institut, Copenhagen, Denmark
- These authors contributed equally to this work
| | - A Romaniuc
- National Institute of Public Health, Regional Centre of Public Health – Iasi, Romania
| | - R Pipirigeanu
- Public Health Authority of the district of Neamt, Romania
| | - E Lupulescu
- National Institute of Research and Development for Microbiology and Immunology ’Cantacuzino’ – National Reference Laboratory for Measles and Rubella, Bucharest, Romania
| | - G Necula
- National Institute of Research and Development for Microbiology and Immunology ’Cantacuzino’ – National Reference Laboratory for Measles and Rubella, Bucharest, Romania
| | - M Lazar
- National Institute of Research and Development for Microbiology and Immunology ’Cantacuzino’ – National Reference Laboratory for Measles and Rubella, Bucharest, Romania
| | - G Molnar
- Ministry of Health, Bucharest, Romania
| | - A Pistol
- National Institute of Public Health, National Centre for Communicable Diseases Surveillance and Control, Bucharest, Romania
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Funke AD, Esser M, Krüttgen A, Weis J, Mitne-Neto M, Lazar M, Nishimura AL, Sperfeld AD, Trillenberg P, Senderek J, Krasnianski M, Zatz M, Zierz S, Deschauer M. The p.P56S mutation in the VAPB gene is not due to a single founder: the first European case. Clin Genet 2010; 77:302-3. [PMID: 20447143 PMCID: PMC2847198 DOI: 10.1111/j.1399-0004.2009.01319.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Abstract
The Weibel instability in the quantum plasma case is treated by means of a fluidlike (moments) approach. Quantum modifications to the macroscopic equations are then identified as effects of the first or second kind. Quantum effects of the first kind correspond to a dispersive term, similar to the Bohm potential in the quantum hydrodynamic equations for plasmas. Effects of the second kind are due to the Fermi statistics of the charge carriers and can become the dominant influence for strong degeneracy. The macroscopic dispersion relations are of higher order than those for the classical Weibel instability. This corresponds to the presence of a cutoff wave number even for the strong temperature anisotropy case.
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Affiliation(s)
- F Haas
- Institut für Theoretische Physik IV, Ruhr-Universität Bochum, D-44780 Bochum, Germany
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Abstract
The link between obesity and diabetes is strong as well as complex. Fat cells produce many circulating regulators of insulin sensitivity, including pro-inflammatory cytokines. In rodents, resistin is produced by adipose tissue, and is a significant regulator of glucose metabolism and insulin sensitivity. In humans, resistin is derived made mainly from macrophages. Given the emerging interrelationship between inflammation and metabolic disease, hyperresistinemia may be a biomarker, and/or a mediator, of metabolic and inflammatory diseases in humans as well as in rodents.
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Affiliation(s)
- M A Lazar
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, and The Institute for Diabetes, Obesity and Metabolism, University of Pennsylvania School of Medicine, Philadelphia, PA 19104-6149, USA.
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Bastin B, Grévy S, Sohler D, Sorlin O, Dombrádi Z, Achouri NL, Angélique JC, Azaiez F, Baiborodin D, Borcea R, Bourgeois C, Buta A, Bürger A, Chapman R, Dalouzy JC, Dlouhy Z, Drouard A, Elekes Z, Franchoo S, Iacob S, Laurent B, Lazar M, Liang X, Liénard E, Mrazek J, Nalpas L, Negoita F, Orr NA, Penionzhkevich Y, Podolyák Z, Pougheon F, Roussel-Chomaz P, Saint-Laurent MG, Stanoiu M, Stefan I, Nowacki F, Poves A. Collapse of the N=28 shell closure in (42)Si. Phys Rev Lett 2007; 99:022503. [PMID: 17678217 DOI: 10.1103/physrevlett.99.022503] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2006] [Indexed: 05/16/2023]
Abstract
The energies of the excited states in very neutron-rich (42)Si and (41,43)P have been measured using in-beam gamma-ray spectroscopy from the fragmentation of secondary beams of (42,44)S at 39A MeV. The low 2(+) energy of (42)Si, 770(19) keV, together with the level schemes of (41,43)P, provides evidence for the disappearance of the Z=14 and N=28 spherical shell closures, which is ascribed mainly to the action of proton-neutron tensor forces. New shell model calculations indicate that (42)Si is best described as a well-deformed oblate rotor.
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Affiliation(s)
- B Bastin
- Laboratoire de Physique Corpusculaire, 6, bd du Mal Juin, F-14050 Caen Cedex, France
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Tonini M, Lemmers R, Arashiro P, van Teijlingen C, Lazar M, Frants R, van der Maarel S, Zatz M. G.P.9 07 D4Z4 repeat exchanges between chromosomes 4 and 10 in different Brazilian ethnic groups: implications for FSHD prevalence? Neuromuscul Disord 2006. [DOI: 10.1016/j.nmd.2006.05.221] [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: 12/01/2022]
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Lazar M, Alexander AL, Thottakara PJ, Badie B, Field AS. White matter reorganization after surgical resection of brain tumors and vascular malformations. AJNR Am J Neuroradiol 2006; 27:1258-71. [PMID: 16775277 PMCID: PMC8133916] [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: 05/10/2023]
Abstract
BACKGROUND AND PURPOSE Diffusion tensor imaging (DTI) and white matter tractography (WMT) are promising techniques for estimating the course, extent, and connectivity patterns of the white matter (WM) structures in the human brain. In this study, DTI and WMT were used to evaluate WM tract reorganization after the surgical resection of brain tumors and vascular malformations. METHODS Pre- and postoperative DTI data were obtained in 6 patients undergoing surgical resection of brain lesions. WMT using a tensor deflection algorithm was used to reconstruct WM tracts adjacent to the lesions. Reconstructed tracts included corticospinal tracts, the corona radiata, superior longitudinal and inferior fronto-occipital fasciculi, cingulum bundles, and the corpus callosum. RESULTS WMT revealed a series of tract alteration patterns including deviation, deformation, infiltration, and apparent tract interruption. In general, the organization of WM tracts appeared more similar to normal anatomy after resection, with either disappearance or reduction of the deviation, deformation, or infiltration present preoperatively. In patients whose lesions were associated with corticospinal tract involvement, the WMT reconstructions showed that the tract was preserved during surgery and improved in position and appearance, and this finding correlated with improvement or preservation of motor function as determined by clinical assessment. CONCLUSION WMT is useful for appreciating the complex relationships between specific WM structures and the anatomic distortions created by brain lesions. Further studies with intraoperative correlation are necessary to confirm these initial findings and to determine WMT utility for presurgical planning and evaluation of surgical treatments.
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Affiliation(s)
- M Lazar
- Laboratory for Brain Imaging and Behavior, The Waisman Center, University of Wisconsin, 1500 Highland Avenue, Madison, WI 53705, USA
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