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Rivas-Lasarte M, Maestro A, Fernández-Martínez J, López-López L, Solé-González E, Vives-Borrás M, Montero S, Mesado N, Pirla MJ, Mirabet S, Fluvià P, Brossa V, Sionis A, Roig E, Cinca J, Álvarez-García J. Prevalence and prognostic impact of subclinical pulmonary congestion at discharge in patients with acute heart failure. ESC Heart Fail 2020; 7:2621-2628. [PMID: 32633473 PMCID: PMC7524099 DOI: 10.1002/ehf2.12842] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/14/2020] [Accepted: 05/29/2020] [Indexed: 01/01/2023] Open
Abstract
Aims Residual pulmonary congestion at hospital discharge can worsen the outcomes in patients with heart failure (HF) and can be detected by lung ultrasound (LUS). The aim of this study was to analyse the prevalence of subclinical pulmonary congestion at discharge and its impact on prognosis in patients admitted for acute HF. Methods and results This is a post‐hoc analysis of the LUS‐HF trial. LUS was performed by the investigators in eight chest zones with a pocket device. Physical exam was subsequently performed by the treating physicians. Primary outcome was a combined endpoint of rehospitalization, unexpected visit for HF worsening or death at 6‐ month follow‐up. Subclinical pulmonary congestion at discharge was defined as the presence of ≥5 B‐lines in LUS in absence of rales in the auscultation employing the area under the ROC curve. At discharge, 100 patients (81%) did not show clinical signs of pulmonary congestion. Of these, 41 had ≥5 B‐lines. Independent factors related with the presence of subclinical pulmonary congestion were anaemia, higher New York Heart Association (NYHA) class, and N terminal pro brain natriuretic peptide (NT‐proBNP). After adjusting by propensity score analysis including age, renal insufficiency, atrial fibrillation, NYHA class, NT‐proBNP levels, clinical congestion, and the trial intervention, the presence of subclinical pulmonary congestion at discharge was a risk factor for the occurrence of the primary outcome (hazard ratio 2.63; 95% confidence interval: 1.08–6.41; P = 0.033). Conclusions Up to 40% of patients considered ‘dry’ according to pulmonary auscultation presents subclinical congestion at hospital discharge that can be detected by LUS and implies a worse prognosis at 6‐ month follow‐up. Comorbidities, high values of natriuretic peptides, and higher NYHA class are the factors related with its presence.
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Ammirati E, Veronese G, Brambatti M, Merlo M, Cipriani M, Potena L, Sormani P, Aoki T, Sugimura K, Sawamura A, Okumura T, Pinney S, Hong K, Shah P, Braun Ö, Van de Heyning CM, Montero S, Petrella D, Huang F, Schmidt M, Raineri C, Lala A, Varrenti M, Foà A, Leone O, Gentile P, Artico J, Agostini V, Patel R, Garascia A, Van Craenenbroeck EM, Hirose K, Isotani A, Murohara T, Arita Y, Sionis A, Fabris E, Hashem S, Garcia-Hernando V, Oliva F, Greenberg B, Shimokawa H, Sinagra G, Adler ED, Frigerio M, Camici PG. Fulminant Versus Acute Nonfulminant Myocarditis in Patients With Left Ventricular Systolic Dysfunction. J Am Coll Cardiol 2020; 74:299-311. [PMID: 31319912 DOI: 10.1016/j.jacc.2019.04.063] [Citation(s) in RCA: 124] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 04/23/2019] [Accepted: 04/29/2019] [Indexed: 12/22/2022]
Abstract
BACKGROUND Fulminant myocarditis (FM) is a form of acute myocarditis characterized by severe left ventricular systolic dysfunction requiring inotropes and/or mechanical circulatory support. A single-center study found that a patient with FM had better outcomes than those with acute nonfulminant myocarditis (NFM) presenting with left ventricular systolic dysfunction, but otherwise hemodynamically stable. This was recently challenged, so disagreement still exists. OBJECTIVES This study sought to provide additional evidence on the outcome of FM and to ascertain whether patient stratification based on the main histologic subtypes can provide additional prognostic information. METHODS A total of 220 patients (median age 42 years, 46.3% female) with histologically proven acute myocarditis (onset of symptoms <30 days) all presenting with left ventricular systolic dysfunction were included in a retrospective, international registry comprising 16 tertiary hospitals in the United States, Europe, and Japan. The main endpoint was the occurrence of cardiac death or heart transplantation within 60 days from admission and at long-term follow-up. RESULTS Patients with FM (n = 165) had significantly higher rates of cardiac death and heart transplantation compared with those with NFM (n = 55), both at 60 days (28.0% vs. 1.8%, p = 0.0001) and at 7-year follow-up (47.7% vs. 10.4%, p < 0.0001). Using Cox multivariate analysis, the histologic subtype emerged as a further variable affecting the outcome in FM patients, with giant cell myocarditis having a significantly worse prognosis compared with eosinophilic and lymphocytic myocarditis. In a subanalysis including only adults with lymphocytic myocarditis, the main endpoints occurred more frequently in FM compared with in NFM both at 60 days (19.5% vs. 0%, p = 0.005) and at 7-year follow up (41.4% vs. 3.1%, p = 0.0004). CONCLUSIONS This international registry confirms that patients with FM have higher rates of cardiac death and heart transplantation both in the short- and long-term compared with patients with NFM. Furthermore, we provide evidence that the histologic subtype of FM carries independent prognostic value, highlighting the need for timely endomyocardial biopsy in this condition.
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Bayes-Genis A, Muñoz-Guijosa C, Santiago-Vacas E, Montero S, García-García C, Codina P, Núñez J, Lupón J. Destination Therapy with Left Ventricular Assist Devices in Non-transplant Centres: The Time is Right. Eur Cardiol 2020; 15:e19. [PMID: 32419850 PMCID: PMC7215475 DOI: 10.15420/ecr.2019.29.2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 08/02/2019] [Indexed: 01/14/2023] Open
Abstract
For almost half a century, cardiac transplant has been the only long-term treatment for patients with end-stage heart failure. Implantable left ventricular assist devices (LVADs) have emerged as a new treatment option for advanced heart failure as destination therapy for patients either too old or not suitable for transplant. A meta-analysis presenting head-to-head comparisons of cardiac transplant versus LVAD as destination therapy (LVAD-DT) found no difference in 1-year mortality rates between LVAD-DT and cardiac transplant (OR 1.49; 95% CI [0.48–4.66]; I2=82.8%). Moreover, a recent subanalysis from the Interagency Registry for Mechanically Assisted Circulatory Support found similar outcomes after LVAD-DT implantation in both transplant and non-transplant centres. The time is right for LVAD-DT in non-transplant centres, provided multidisciplinary heart failure teams and expertise are in place.
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Veronese G, Ammirati E, Brambatti M, Merlo M, Cipriani M, Potena L, Sormani P, Aoki T, Sugimura K, Sawamura A, Okumura T, Pinney S, Hong K, Shah P, Braun OÖ, Van de Heyning CM, Montero S, Petrella D, Huang F, Schmidt M, Raineri C, Lala A, Varrenti M, Foà A, Leone O, Gentile P, Artico J, Agostini V, Patel R, Garascia A, Van Craenenbroeck EM, Hirose K, Isotani A, Murohara T, Arita Y, Sionis A, Fabris E, Hashem S, Garcia-Hernando V, Oliva F, Greenberg B, Shimokawa H, Sinagra G, Adler ED, Frigerio M, Camici PG. Viral genome search in myocardium of patients with fulminant myocarditis. Eur J Heart Fail 2020; 22:1277-1280. [PMID: 31926056 DOI: 10.1002/ejhf.1738] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 12/08/2019] [Indexed: 11/09/2022] Open
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Gámez F, Fernández JM, Moreno E, Tejeda G, Hernández MI, Montero S. Inelastic Collisions of O 2 with He at Low Temperatures. J Phys Chem A 2019; 123:8496-8505. [DOI: 10.1021/acs.jpca.9b06165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ammirati E, Veronese G, Brambatti M, Merlo M, Potena L, Okumura T, Pinney S, Braun O, Van De Heyning CM, Montero S, Shimokawa H, Sinagra G, Adler E, Frigerio M, Camici PG. 2422Outcome of histologically-proven fulminant versus acute non-fulminant myocarditis with left ventricular systolic dysfunction. Evidence from the International Registry on Acute Myocarditis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Fulminant myocarditis (FM) is a form of acute myocarditis characterized by severe left ventricular (LV) dysfunction requiring inotropes and/or mechanical circulatory support. Based on a retrospective single-center study published in 2000, patients with FM were considered to have better outcomes than those affected by acute non-fulminant myocarditis (NFM) presenting with LV systolic dysfunction (LVSD). Recently, this tenet was challenged, though substantial disagreement still exists.
Purpose
Aim of the present study is to provide additional evidence on the outcome of FM and to ascertain if patient stratification based on the main histologic subtypes can provide additional prognostic information.
Methods
Two hundred and twenty patients (median age 42 years, 46.3% female) with histologically proven acute myocarditis (onset of symptoms <30 days) presenting with LVSD were included in a retrospective, international registry comprising 16 tertiary hospitals in the United States, Europe, and Japan. The primary endpoint was the occurrence of cardiac death or heart transplant (HTx) within 60 days from admission and at long-term follow-up.
Results
Patients with FM (N=165) had significantly higher rates of cardiac death and HTx compared with those with NFM (N=55), both at 60 days (28.0% vs. 1.8%, p=0.0001) and at 7-year follow up (47.7% vs. 10.4%, p<0.0001; Figure). At Cox-multivariate analysis, the histologic subtype emerged as a further variable affecting outcome in FM patients, with giant cell myocarditis having a significantly worse prognosis compared with eosinophilic and lymphocytic myocarditis both at 60 days (62.5% vs. 26.3% vs. 21.0%) and at 3 years (81.3% vs. 39.9% vs. 37.3%, overall p<0.0001). In a sub-analysis including only adults with lymphocytic myocarditis, the main endpoints occurred more frequently in FM compared with NFM both at 60 days (19.5% vs. 0%, p=0.005) and up to 7 years (41.4% vs. 3.1%, p=0.0004).
Outcome of FM vs NFM
Conclusions
The results of this international registry confirm that patients with FM have higher rates of cardiac death and HTx both in the short and long-term compared with patients with NFM. Furthermore, we provide evidence that the histologic subtype of FM carries independent prognostic value, highlighting the need for timely endomyocardial biopsy in this condition.
Acknowledgement/Funding
None
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Llaó I, Gómez-Hospital JA, Aboal J, Garcia C, Montero S, Sambola A, Ortiz J, Tomás C, Bonet G, Viñas D, Oliveras T, Sans-Roselló J, Cantalapiedra J, Andrea R, Hernández I, Pérez-Rodriguez M, Gual M, Cequier A, Ariza-Solé A. Risk-adjusted early invasive strategy in patients with non-ST-segment elevation acute coronary syndrome in Intensive Cardiac Care Units. Med Intensiva 2019; 44:475-484. [PMID: 31362838 DOI: 10.1016/j.medin.2019.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/27/2019] [Accepted: 06/01/2019] [Indexed: 11/19/2022]
Abstract
OBJECTIVE Current guidelines recommend a risk-adjusted early invasive strategy (EIS) in patients with non-ST-segment elevation acute coronary syndrome (NSTEACS). The present study assesses the application if this strategy, the conditioning factors and prognostic impact upon patients with NSTEACS admitted to Intensive Cardiac Care Units (ICCU). DESIGN A prospective cohort study was carried out. SETTING The ICCUs of 8 hospitals in Catalonia (Spain). PATIENTS Consecutive patients with NSTEACS between October 2017 and March 2018. The risk profile was defined by the European Society of Cardiology criteria. INTERVENTIONS EIS was defined as the performance of coronary angiography within the first 6hours in patients at very high-risk or within 24hours in high-risk patients. OUTCOME VARIABLES Mortality or readmission at 6 months. RESULTS A total of 629 patients were included (mean age 66.6 years), of whom 225 (35.9%) were at very high risk, and 392 (62.6%) at high risk. Most patients (96.2%) underwent an invasive strategy. EIS was performed in 284 patients (45.6%), especially younger patients with fewer comorbidities. These patients had a shorter ICCU and hospital stay, as well as a lesser incidence of ACS, revascularization and death or readmission at 6 months. After adjusting for confounders, the association between EIS and death or readmission at 6 months remained significant (hazard ratio: .66, 95% confidence interval .45-.97; P=.035). CONCLUSIONS The EIS was performed in a minority of NSTEACS admitted to ICCU, being associated with better outcomes.
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Montero S, Chommeloux J, Franchineau G, Combes A, Schmidt M. Microcirculation in cardiogenic shock supported with extracorporeal membrane oxygenation: the need for a homogeneous population and strict evolution assessment. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2018; 22:281. [PMID: 30373656 PMCID: PMC6206654 DOI: 10.1186/s13054-018-2214-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 10/02/2018] [Indexed: 11/10/2022]
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Montero S, Aissaoui N, Tadié JM, Bizouarn P, Scherrer V, Persichini R, Delmas C, Rolle F, Besnier E, Le Guyader A, Combes A, Schmidt M. Fulminant giant-cell myocarditis on mechanical circulatory support: Management and outcomes of a French multicentre cohort. Int J Cardiol 2018; 253:105-112. [PMID: 29306448 DOI: 10.1016/j.ijcard.2017.10.053] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 10/04/2017] [Accepted: 10/13/2017] [Indexed: 11/17/2022]
Abstract
AIMS Giant-cell myocarditis (GCM) is a rare and often fatal form of myocarditis. Only a few reports have focused on fulminant forms. We describe the clinical characteristics, management and outcomes of GCM patients rescued by mechanical circulatory support (MCS). METHODS AND RESULTS The clinical features, diagnoses, treatments and outcomes of MCS-treated patients in refractory cardiogenic shock secondary to fulminant GCM admitted to eight French intensive care units (2002-2016) were analysed. We also conducted a systematic review of this topic. Thirteen patients (median age 44 [range 21-76]years, Simplified Acute Physiology Score II 55 [40-79]) in severe cardiogenic shock (median [range] left ventricular ejection fraction 15% [15-35%] and blood lactate 4 mmol/L) were placed on MCS 4 [0-28]days after hospital admission. Severe arrhythmic disturbances were frequent (77%), with six (46%) patients experiencing an electrical storm prior to MCS. Venoarterial extracorporeal membrane oxygenation was the first MCS option for 11 (85%) patients. GCM was diagnosed in five (38%) patients before transplant or death and treated with immunosuppressants; infections were the main complication (80%). Four patients died on MCS and no patient presented long-term survival free from heart transplant (nine patients, 69%). All transplanted patients were alive 1year later and no GCM recurrence was reported after median follow-up of 42 [12-145]months. CONCLUSION Outcomes of fulminant GCMs may differ from those of milder forms. In this context, heart transplant might likely be the only long-term survival option.
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Montero S, Ferrero-Gregori A, Cinca J, Guerra JM. Long-term Outcome of Patients With Tachycardia-induced Cardiomyopathy After Recovery of Left Ventricular Function. REVISTA ESPANOLA DE CARDIOLOGIA (ENGLISH ED.) 2018; 71:681-683. [PMID: 28669768 DOI: 10.1016/j.rec.2017.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 04/24/2017] [Indexed: 06/07/2023]
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Montero S, Ferrero-Gregori A, Cinca J, Guerra JM. Evolución a largo plazo de pacientes con taquimiocardiopatía tras la recuperación de la función ventricular. Rev Esp Cardiol 2018. [DOI: 10.1016/j.recesp.2017.04.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Montero S, Slutsky AS, Schmidt M. The PRESET-Score: the extrapulmonary predictive survival model for extracorporeal membrane oxygenation in severe acute respiratory distress syndrome. J Thorac Dis 2018; 10:S2040-S2044. [PMID: 30023113 DOI: 10.21037/jtd.2018.05.184] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Montero S, Combes A, Schmidt M. The extracorporeal membrane oxygenation (ECMO) high-fidelity simulator: the best complementary tool to learn the technique. J Thorac Dis 2017; 9:4273-4276. [PMID: 29268489 DOI: 10.21037/jtd.2017.10.117] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Rozencwajg S, Fraser J, Montero S, Combes A, Schmidt M. To be or not to be on ECMO: can survival prediction models solve the question? CRIT CARE RESUSC 2017; 19:21-28. [PMID: 29084498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Over the past decade, there has been growing interest in extracorporeal membrane oxygenation (ECMO) as a rescue therapy for patients with severe acute respiratory distress syndrome (ARDS) and cardiogenic shock. Although survival of ECMO-treated patients has improved recently, the incidence of ECMO-related complications such as bleeding and nosocomial infections remains unacceptably high. In addition, patients often experience long-term physiological and psychological sequelae. Hence, identifying patients who will most likely benefit from ECMO is crucial. Because the technique exposes patients to complications and is associated with high costs and resource utilisation, prediction models have been developed to assist clinicians in identifying patients that would most likely survive after ECMO treatment. In addition, these prediction models enable comparison of risk-adjusted outcomes, both over time and between centres. Our review explores the latest predictive survival models developed for ECMO-treated severe cardiogenic shock and ARDS patients.
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Cuéllar R, Montero S, Luquín S, García-Estrada J, Melnikov V, Virgen-Ortiz A, Lemus M, Pineda-Lemus M, de Álvarez-Buylla E. BDNF and AMPA receptors in the cNTS modulate the hyperglycemic reflex after local carotid body NaCN stimulation. Auton Neurosci 2017; 205:12-20. [PMID: 28254195 DOI: 10.1016/j.autneu.2017.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 11/29/2016] [Accepted: 02/01/2017] [Indexed: 11/30/2022]
Abstract
The application of sodium cyanide (NaCN) to the carotid body receptors (CBR) (CBR stimulation) induces rapid blood hyperglycemia and an increase in brain glucose retention. The commissural nucleus tractus solitarius (cNTS) is an essential relay nucleus in this hyperglycemic reflex; it receives glutamatergic afferents (that also release brain derived neurotrophic factor, BDNF) from the nodose-petrosal ganglia that relays CBR information. Previous work showed that AMPA in NTS blocks hyperglycemia and brain glucose retention after CBR stimulation. In contrast, BDNF, which attenuates glutamatergic AMPA currents in NTS, enhances these glycemic responses. Here we investigated the combined effects of BDNF and AMPA (and their antagonists) in NTS on the glycemic responses to CBR stimulation. Microinjections of BDNF plus AMPA into the cNTS before CBR stimulation in anesthetized rats, induced blood hyperglycemia and an increase in brain arteriovenous (a-v) of blood glucose concentration difference, which we infer is due to increased brain glucose retention. By contrast, the microinjection of the TrkB antagonist K252a plus AMPA abolished the glycemic responses to CBR stimulation similar to what is observed after AMPA pretreatments. In BDNF plus AMPA microinjections preceding CBR stimulation, the number of c-fos immunoreactive cNTS neurons increased. In contrast, in the rats microinjected with K252a plus AMPA in NTS, before CBR stimulation, c-fos expression in cNTS decreased. The expression of AMPA receptors GluR2/3 did not change in any of the studied groups. These results indicate that BDNF in cNTS plays a key role in the modulation of the hyperglycemic reflex initiated by CBR stimulation.
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Montero S, Combes A, Schmidt M. We must identify patients at risk for pre-hospital sudden cardiac arrest at the early phase of myocardial infarction. J Thorac Dis 2017; 9:466-469. [DOI: 10.21037/jtd.2017.03.30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Kühnel M, Fernández JM, Tramonto F, Tejeda G, Moreno E, Kalinin A, Nava M, Galli DE, Montero S, Grisenti RE. Mixing effects in the crystallization of supercooled quantum binary liquids. J Chem Phys 2015; 143:064504. [PMID: 26277142 DOI: 10.1063/1.4928280] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
By means of Raman spectroscopy of liquid microjets, we have investigated the crystallization process of supercooled quantum liquid mixtures composed of parahydrogen (pH2) or orthodeuterium (oD2) diluted with small amounts of neon. We show that the introduction of the Ne impurities affects the crystallization kinetics in terms of a significant reduction of the measured pH2 and oD2 crystal growth rates, similarly to what found in our previous work on supercooled pH2-oD2 liquid mixtures [Kühnel et al., Phys. Rev. B 89, 180201(R) (2014)]. Our experimental results, in combination with path-integral simulations of the supercooled liquid mixtures, suggest in particular a correlation between the measured growth rates and the ratio of the effective particle sizes originating from quantum delocalization effects. We further show that the crystalline structure of the mixtures is also affected to a large extent by the presence of the Ne impurities, which likely initiate the freezing process through the formation of Ne-rich crystallites.
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Montero S, Pérez-Ríos J. Rotational relaxation in molecular hydrogen and deuterium: Theory versus acoustic experiments. J Chem Phys 2014; 141:114301. [DOI: 10.1063/1.4895398] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Mirabet S, Roldan C, Rivas M, Lozano F, Brossa V, Lopez L, Montero S, Gelpi MC, Roig E. Prognostic implications of positive C4d Immunostaining on endomyocardial biopsies of heart transplant patients. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Pérez-Ríos J, Tejeda G, Fernández JM, Hernández MI, Montero S. Inelastic collisions in molecular oxygen at low temperature (4 ⩽T⩽ 34 K). Close-coupling calculations versus experiment. J Chem Phys 2011; 134:174307. [DOI: 10.1063/1.3585978] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ramos A, Tejeda G, Fernández JM, Montero S. Nonequilibrium Processes in Supersonic Jets of N 2, H 2, and N 2+ H 2Mixtures: (II) Shock Waves. J Phys Chem A 2010; 114:7761-8. [DOI: 10.1021/jp1040053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Morilla JH, Fernández JM, Tejeda G, Montero S. The onset of molecular condensation: hydrogen. Phys Chem Chem Phys 2010; 12:12060-4. [DOI: 10.1039/c003376f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Lemus M, Montero S, Luquín S, García J, De Alvarez-Buylla ER. Nitric oxide in the solitary tract nucleus (STn) modulates glucose homeostasis and FOS-ir expression after carotid chemoreceptor stimulation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2009; 648:403-10. [PMID: 19536505 DOI: 10.1007/978-90-481-2259-2_46] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We evaluate in rats the role of NO in the solitary tract nucleus (STn) after an anoxic stimulus to carotid body chemoreceptor cells (CChrc) with cyanide (NaCN), on the hyperglycemic reflex with glucose retention by the brain (BGR) and FOS expression (FOS-ir) in the STn. The results suggest that nitroxidergic pathways in the STn may play an important role in glucose homeostasis. A NO donor such as sodium nitroprusside (NPS) in the STn before CChrc stimulation increased arterial glucose level and significantly decreased BGR. NPS also induced a higher FOS-ir expression in STn neurons when compared to neurons in control rats that only received artificial cerebrospinal fluid (aCSF) before CChrc stimulation. In contrast, a selective NOS inhibitor such as Nomega-nitro-L-arginine methyl ester (L-NAME) in the STn before CChrc stimulation resulted in an increase of both, systemic glucose and BGR above control values. In this case, the number of FOS-ir positive neurons in the STn decreased when compared to control or to NPS experiments. FOS-ir expression in brainstem cells suggests that CChrc stimulation activates nitroxidergic pathways in the STn to regulate peripheral and central glucose homeostasis. The study of these functionally defined cells will be important to understand brain glucose homeostasis.
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Ramos A, Tejeda G, Fernández JM, Montero S. Nonequilibrium Processes in Supersonic Jets of N2, H2, and N2 + H2 Mixtures: (I) Zone of Silence. J Phys Chem A 2009; 113:8506-12. [DOI: 10.1021/jp901700c] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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