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Anquetin Y, Gaspar J, Corre Y, Tichit Q, Gardarein J, Laffont G, Missirlian M, Pocheau C. Surface heat flux estimation with embedded thermocouples and Fiber Bragg Grating sensor in ITER-like plasma facing components. Fusion Engineering and Design 2023. [DOI: 10.1016/j.fusengdes.2023.113480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Gaspar J, Rigollet F, Ehret N, Anquetin Y, Bernard E, Corre Y, Diez M, Firdaouss M, Houry M, Loarer T, Martin C, Missirlian M, Moreau P, Pocheau C, Reihlac P, Richou M, Tsitrone E. Emissivity measurement of the ITER-like plasma facing components of the WEST phase 2: pre-exposure measurements and first WEST exposure. Nuclear Materials and Energy 2022. [DOI: 10.1016/j.nme.2022.101305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Eid-Lidt G, Vega Servín S, Farjat Pasos JI, Rivera Rodríguez A, Anaya Morales CA, Marroquin Donday LA, Nombela Franco L, Gaspar J. Bioprosthetic valve failure. Comparative trial of two balloon-expandable transcatheter heart valve systems in intermediate-risk patients: a propensity score analysis. Acta Cardiol 2022; 77:158-165. [PMID: 34092183 DOI: 10.1080/00015385.2021.1894726] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND The comparative mid and long-term durability, including the rates of bioprosthetic valve failure (BVF) of the Sapien XT® and Sapien 3® transcatheter heart valve (THV) in patients with intermediate surgical risk has not been reported. METHODS Consecutive intermediate-risk patients with severe aortic stenosis from the Mexican registry of transcatheter aortic valve replacement (TAVR) with Sapien® THVs were included. The primary endpoint was to compare the BVF rate between THVs at 2 years of follow-up. Secondary endpoints were comparisons of the composite of global mortality, cardiovascular mortality, and neurological events at 30 d and 24 months of follow-up. RESULTS During 2014-2019, 115 (60 Sapien XT® and 55 Sapien 3®) patients met the inclusion criteria in five medical centres. The mean age was 77.3 ± 8.4 years. The average Society of Thoracic Surgeons Predicted Risk of Mortality (STS-PROM) was 5.6 ± 2.9. There was no statistically significant difference between the groups in BVF rate. At 30 d, overall, cardiovascular and non-cardiovascular mortality was 4.3%, 2.6%, and 1.7%, respectively. Neurological events rate was 1.73%. The mean long-term follow-up was 25.3 ± 14.2 months with an overall mortality of 9.56% but lower for the Sapien 3® group (15% vs. 3.6%, p=.037). The only independent predictor of composite mortality and neurological events that occurred in the long term was using a Sapien XT® [OR 1.6, CI 95%, 1.0-24.9; p=.049]. CONCLUSIONS The BVF rate at 25 months of follow-up was similar with the XT and S3 systems. During this follow-up period, the major composite events of death from any cause and neurological events were significantly lower with the S3 system.
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Affiliation(s)
- Guering Eid-Lidt
- Ignacio Chavez National Institute of Cardiology, Mexico City, Mexico
| | - Said Vega Servín
- Ignacio Chavez National Institute of Cardiology, Mexico City, Mexico
| | | | | | | | | | | | - Jorge Gaspar
- Ignacio Chavez National Institute of Cardiology, Mexico City, Mexico
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Arias E, González-Pacheco H, Sandoval-Jones J, Berrios E, Damas de los Santos F, Arias A, Rodríguez-Zanella H, Pasos JF, Jimenez-Santos M, Cervantes RDLM, Arias-Godínez JA, Gaspar J. TCT-129 Use of the PRECISE 3D-CT Morphological Classification for Percutaneous Closure Treatment Selection in Patients With Ventricular Septal Rupture. J Am Coll Cardiol 2021. [DOI: 10.1016/j.jacc.2021.09.979] [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: 10/19/2022]
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Corre Y, Chanet N, Cotillard R, Gaspar J, Laffont G, Pocheau C, Caulier G, Destouches C, Gardarein JL, Firdaouss M, Houry M, Missirlian M, Roussel N, Santraine B. First temperature database achieved with Fiber Bragg Grating sensors in uncooled plasma facing components of the WEST lower divertor. Fusion Engineering and Design 2021. [DOI: 10.1016/j.fusengdes.2021.112528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Eid-Lidt G, Rivera Rodríguez A, Jimenez Castellanos J, Farjat Pasos JI, Estrada López KE, Gaspar J. Distal Radial Artery Approach to Prevent Radial Artery Occlusion Trial. JACC Cardiovasc Interv 2021; 14:378-385. [PMID: 33602433 DOI: 10.1016/j.jcin.2020.10.013] [Citation(s) in RCA: 84] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/30/2020] [Accepted: 10/13/2020] [Indexed: 01/12/2023]
Abstract
OBJECTIVES The aim of this study was to compare the rate of proximal radial artery occlusion (RAO) with Doppler ultrasound between distal and conventional radial access 24 h and 30 days after a transradial coronary procedure. BACKGROUND The use of distal radial access to prevent proximal RAO (PRAO) in the proximal segment at 24 h and 30 days after a procedure, compared with conventional radial access, is unknown. METHODS This was a prospective, comparative, longitudinal, randomized study. A total of 282 patients were randomized to either proximal radial access (n = 142) or distal radial access (n = 140) to evaluate the superiority of the distal approach in the prevention of PRAO with Doppler ultrasound 24 h and 30 days after a transradial coronary procedure. RESULTS In the per protocol analysis, the rates of PRAO at 24 h and 30 days were 8.4% and 5.6% in the proximal group and 0.7% and 0.7% in the distal group, respectively (24 h: odds ratio [OR]: 12.8; 95% confidence interval [CI]: 1.6 to 100.0; p = 0.002; 30 days: OR: 8.2; 95% CI: 1.0 to 67.2; p = 0.019). In an intention-to-treat analysis, the 24-h and 30-day rates of PRAO were 8.8% and 6.4% for proximal radial access and 1.2% and 0.6% in the distal radial access group (24 h: OR: 7.4; 95% CI: 1.6 to 34.3; p = 0.003; 30 days: OR: 10.6; 95% CI: 1.3 to 86.4; p = 0.007). CONCLUSIONS Distal radial access prevents RAO in the proximal segment at 24 h and 30 days after the procedure compared with conventional radial access.
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Affiliation(s)
- Guering Eid-Lidt
- Interventional Cardiology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico.
| | - Agustín Rivera Rodríguez
- Interventional Cardiology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
| | | | - Julio I Farjat Pasos
- Interventional Cardiology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
| | - Kathia E Estrada López
- Interventional Cardiology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
| | - Jorge Gaspar
- Interventional Cardiology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
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Grosjean A, Aumeunier M, Corre Y, Firdaouss M, Gaspar J, Gerardin J, Gunn J, Courtois X, Dejarnac R, Diez M, Dubus L, Houry M, Pocheau C, Tsitrone E. Interpretation of temperature distribution observed on W-ITER-like PFUs in WEST monitored with a very-high-resolution IR system. Fusion Engineering and Design 2021. [DOI: 10.1016/j.fusengdes.2021.112387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Gunn J, Bucalossi J, Corre Y, Diez M, Delmas E, Fedorczak N, Grosjean A, Firdaouss M, Gaspar J, Loarer T, Missirlian M, Moreau P, Nardon E, Reux C, Richou M, Tsitrone E. Thermal loads in gaps between ITER divertor monoblocks: First lessons learnt from WEST. Nuclear Materials and Energy 2021. [DOI: 10.1016/j.nme.2021.100920] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Fedorczak N, Gaspar J, Corre Y, Grosjean A, Courtois X, Gunn J, Mitteau R, Dejarnac R, Bucalossi J, Tsitrone E, Loarer T, Brezinsek S. Cross diagnostics measurements of heat load profiles on the lower tungsten divertor of WEST in L-mode experiments. Nuclear Materials and Energy 2021. [DOI: 10.1016/j.nme.2021.100961] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Eid-Lidt G, Rodríguez AR, Castellanos JJ, Farjat Pasos JI, Gaspar J. Reply: Distal Radial Artery Approach to Prevent Radial Artery Occlusion. JACC Cardiovasc Interv 2021; 14:1162-1163. [PMID: 34016422 DOI: 10.1016/j.jcin.2021.03.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 03/17/2021] [Accepted: 03/17/2021] [Indexed: 11/19/2022]
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Eid-Lidt G, Rodríguez AR, Castellanos JJ, Farjat Pasos JI, Gaspar J. Reply: Distal Radial Access to Prevent Conventional Radial Artery Occlusion. JACC Cardiovasc Interv 2021; 14:1044-1045. [PMID: 33958166 DOI: 10.1016/j.jcin.2021.03.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/05/2021] [Accepted: 03/09/2021] [Indexed: 11/20/2022]
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Bisson R, Hodille E, Gaspar J, Douai D, Wauters T, Gallo A, Gunn J, Hakola A, Loarer T, Nouailletas R, Morales J, Pégourié B, Reux C, Sabot R, Tsitrone E, Vartanian S, Wang E, Fedorczak N, Brezinsek S. Deuterium and helium outgassing following plasma discharges in WEST: Delayed D outgassing during D-to-He changeover experiments studied with threshold ionization mass spectrometry. Nuclear Materials and Energy 2021. [DOI: 10.1016/j.nme.2020.100885] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Aumeunier MH, Gerardin J, Talatizi C, Le Bohec M, Ben Yaala M, Marot L, Loarer T, Mitteau R, Gaspar J, Rigollet F, Courtois X, Houry M, Herrmann A, Faitsch M. Infrared thermography in metallic environments of WEST and ASDEX Upgrade. Nuclear Materials and Energy 2021. [DOI: 10.1016/j.nme.2020.100879] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Gaspar J, Aumeunier MH, Le Bohec M, Rigollet F, Brezinsek S, Corre Y, Courtois X, Dejarnac R, Diez M, Dubus L, Fedorczak N, Houry M, Moncada V, Moreau P, Pocheau C, Talatizi C, Tsitrone E. In-situ assessment of the emissivity of tungsten plasma facing components of the WEST tokamak. Nuclear Materials and Energy 2020. [DOI: 10.1016/j.nme.2020.100851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Eid-Lidt G, Reyes J, Rivera A, Limon C, Soto M, Gaspar J. TCT-777 Prevention of Radial Artery Occlusion: Comparison of 3 Hemostatic Methods in Transradial Intervention. J Am Coll Cardiol 2019. [DOI: 10.1016/j.jacc.2019.08.920] [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: 10/25/2022]
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Gaspar J, Corre Y, Firdaouss M, Gardarein J, Gerardin J, Gunn J, Houry M, Laffont G, Loarer T, Missirlian M, Morales J, Moreau P, Pocheau C, Tsitrone E. First heat flux estimation in the lower divertor of WEST with embedded thermal measurements. Fusion Engineering and Design 2019. [DOI: 10.1016/j.fusengdes.2019.01.074] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gaspar J, Coenen J, Corre Y, Dejarnac R, Firdaouss M, Clairet F, Gunn J, Iglesias D, Komm M, Krieger K, Matthews G, Pitts R, Silburn S. Heat flux analysis of Type-I ELM impact on a sloped, protruding surface in the JET bulk tungsten divertor. Nuclear Materials and Energy 2018. [DOI: 10.1016/j.nme.2018.10.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Corre Y, Laffont G, Pocheau C, Cotillard R, Gaspar J, Roussel N, Firdaouss M, Gardarein JL, Guilhem D, Missirlian M. Integration of fiber Bragg grating temperature sensors in plasma facing components of the WEST tokamak. Rev Sci Instrum 2018; 89:063508. [PMID: 29960581 DOI: 10.1063/1.5024514] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Plasma Facing Components (PFC) temperature measurement is mandatory to ensure safe high power and long pulse tokamak operation. IR thermography systems which are widely used in magnetic fusions devices become challenged with the choice of tungsten as a PFC material in the ITER tokamak, mainly due to emissivity uncertainties and reflection issues in a hot environment. Embedded temperature measurements are foreseen to cross-check the IR thermography measurements. Fiber Bragg grating sensors are potentially of great interest for this application because they are immune to electromagnetic interference and allow the measurement of a large number of temperature spots on a single fiber. Four optical fiber temperature sensing probes, each of them including 11 regenerated fiber Bragg gratings equally spaced by 12.5 mm (equivalent to one ITER-like tungsten monoblock), have been specifically designed and manufactured for the WEST project (W-tungsten Environment and Steady State Tokamak). The four probes are embedded in W-coated graphite components at two different distances from the surface, 3.5 mm and 7 mm, to cover a wide range of temperatures up to 900 °C. This paper addresses the design and integration issues and the qualification and performance assessment performed in the laboratory. It also shows the first measurements of this new diagnostic achieved in a tokamak environment during baking of the machine and during early diverted plasma exposure.
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Affiliation(s)
- Y Corre
- CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France
| | - G Laffont
- CEA, LIST, Gif-sur-Yvette Cedex 91191, France
| | - C Pocheau
- CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France
| | - R Cotillard
- CEA, LIST, Gif-sur-Yvette Cedex 91191, France
| | - J Gaspar
- CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France
| | - N Roussel
- CEA, LIST, Gif-sur-Yvette Cedex 91191, France
| | - M Firdaouss
- CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France
| | - J-L Gardarein
- Aix-Marseille Université, CNRS, IUSTI UMR 7343, 13013 Marseille, France
| | - D Guilhem
- CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France
| | - M Missirlian
- CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France
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Dejarnac R, Corre Y, Vondracek P, Gardarein JL, Gaspar J, Gauthier E, Gunn J, Horacek J, Hron M, Komm M, Panek R, Pitts R, the COMPASS team. Power deposition on misaligned edges in COMPASS. Nuclear Materials and Energy 2017. [DOI: 10.1016/j.nme.2016.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Pitts R, Bardin S, Bazylev B, van den Berg M, Bunting P, Carpentier-Chouchana S, Coenen J, Corre Y, Dejarnac R, Escourbiac F, Gaspar J, Gunn J, Hirai T, Hong SH, Horacek J, Iglesias D, Komm M, Krieger K, Lasnier C, Matthews G, Morgan T, Panayotis S, Pestchanyi S, Podolnik A, Nygren R, Rudakov D, De Temmerman G, Vondracek P, Watkins J. Physics conclusions in support of ITER W divertor monoblock shaping. Nuclear Materials and Energy 2017. [DOI: 10.1016/j.nme.2017.03.005] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Janca A, Gaspar J. Social rituals as an early indicator of mental illness. Eur Psychiatry 2017. [DOI: 10.1016/j.eurpsy.2017.01.849] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
IntroductionSocial rituals refer to routine and expected social activities that are practiced in all communities in a culturally recognized manner (e.g., social greetings, eating customs, attention to dress, sleeping rituals etc.). Persistent departures from or disregard of these social rituals may be an early or prodromal sign of the onset of mental illness.Objectives(1) To develop and evaluate psychometric properties of a measure of social rituals entitled, Social Rituals Schedule (SRS); (2) to evaluate the reliability and cross-cultural applicability of this measure.MethodsThe SRS was administered to 30 psychiatric patients and their nominated relative/friend. The cross-cultural evaluations were conducted using focus groups of Ethiopian (n = 30), Australian Indigenous (n = 100), Iranian (n = 22), and Indian (n = 50) participants.ResultsThe SRS demonstrated moderate to high inter-rater reliability and patient-informant concordance. The social ritual domains were found to be valid, well understood and applicable across the sampled cultures [1].ConclusionsThe concept of social rituals and the SRS instrument were demonstrated to be feasible, reliable and cross-culturally applicable tools for measuring changes in people's appearance and behavior that might be indicative of emerging mental illness.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Eid-Lidt G, Gaspar J, Sandoval J, Gonzalez-Pacheco H, Arias A, Acevedo P, Pulido T, Martinez-Sanchez C, Martinez-Rios MA. Persistent pulmonary hypertension and right ventricular function after percutaneous mechanical thrombectomy in severe acute pulmonary embolism. Eur Respir J 2016; 49:13993003.00910-2016. [DOI: 10.1183/13993003.00910-2016] [Citation(s) in RCA: 2] [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] [Received: 03/22/2016] [Accepted: 09/11/2016] [Indexed: 01/21/2023]
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Sandoval J, Gomez-Arroyo J, Gaspar J, Pulido-Zamudio T. Interventional and surgical therapeutic strategies for pulmonary arterial hypertension: Beyond palliative treatments. J Cardiol 2015; 66:304-14. [PMID: 25769400 DOI: 10.1016/j.jjcc.2015.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 01/20/2015] [Indexed: 10/23/2022]
Abstract
Despite significant advances in pharmacological treatments, pulmonary arterial hypertension remains an incurable disease with an unreasonably high morbidity and mortality. Although specific pharmacotherapies have shifted the survival curves of patients and improved exercise endurance as well as quality of life, it is also true that these pharmacological interventions are not always accessible (particularly in developing countries) and, perhaps most importantly, not all patients respond similarly to these drugs. Furthermore, many patients will continue to deteriorate and will eventually require an additional, non-pharmacological, intervention. In this review we analyze the role of atrial septostomy and Potts anastomosis in the management of patients with pulmonary arterial hypertension, we summarize the current worldwide clinical experience (case reports and case series), and discuss why these interventional/surgical strategies might have a therapeutic role beyond that of a "bridge" to transplantation.
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Affiliation(s)
- Julio Sandoval
- Department of Cardiopulmonary, Instituto Nacional de Cardiología "Ignacio Chávez", Mexico City, Mexico.
| | - Jose Gomez-Arroyo
- Department of Cardiopulmonary, Instituto Nacional de Cardiología "Ignacio Chávez", Mexico City, Mexico; Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University-School of Medicine, Baltimore, MD, USA
| | - Jorge Gaspar
- Department of Interventional Cardiology, Instituto Nacional de Cardiología "Ignacio Chávez", Mexico City, Mexico
| | - Tomas Pulido-Zamudio
- Department of Cardiopulmonary, Instituto Nacional de Cardiología "Ignacio Chávez", Mexico City, Mexico
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Eid-Lidt G, Gaspar J, Sandoval E, González-Pacheco H, Damas de los Santos F, Martínez-Ríos MA. Primary angioplasty limited to the culprit vessel in patients with multivessel disease: impact on clinical outcomes. Int J Cardiol 2013; 168:3053-5. [PMID: 23643426 DOI: 10.1016/j.ijcard.2013.04.103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Accepted: 04/06/2013] [Indexed: 10/26/2022]
Affiliation(s)
- Guering Eid-Lidt
- Department of Interventional Cardiology, Instituto Nacional de Cardiología "Ignacio Chávez", Mexico City, Mexico.
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Gaspar J, Gir E, Reis RK, Quintana SM. P3.077 Sociodemographic and Clinical Profile of Women with Genital Infection by the Human Papillomavirus Seen at a Brazilian Reference Hospital. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0537] [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: 11/04/2022]
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Gaspar J, Gir E, Reis RK, Quintana SM, Canini SRMS. P3.057 Clinical Follow-Up of Women with Genital Human Papillomavirus Infection Treated at a Reference Hospital in Brazil. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0517] [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: 11/03/2022]
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Eid-Lidt G, Gaspar J, Meléndez-Ramírez G, Cervantes S. J, González-Pacheco H, Dámas de Los Santos F, Meave-González A, Ramírez Marroquín S. Endovascular treatment of type B dissection in patients with marfan syndrome: Mid-term outcomes and aortic remodeling. Catheter Cardiovasc Interv 2013; 82:E898-905. [DOI: 10.1002/ccd.24725] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Accepted: 10/12/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Guering Eid-Lidt
- Department of Interventional Cardiology; Instituto Nacional de Cardiología “Ignacio Chávez”; Mexico City Mexico
| | - Jorge Gaspar
- Department of Interventional Cardiology; Instituto Nacional de Cardiología “Ignacio Chávez”; Mexico City Mexico
| | - Gabriela Meléndez-Ramírez
- Department of Magnetic Resonance; Instituto Nacional de Cardiología “Ignacio Chávez”; Mexico City Mexico
| | - Jorge Cervantes S.
- Department of Cardiovascular Surgery; Instituto Nacional de Cardiología “Ignacio Chávez”; Mexico City Mexico
| | - Hector González-Pacheco
- Department of Urgency and Coronary Care Unit; Instituto Nacional de Cardiología “Ignacio Chávez”; Mexico City Mexico
| | - Félix Dámas de Los Santos
- Department of Urgency and Coronary Care Unit; Instituto Nacional de Cardiología “Ignacio Chávez”; Mexico City Mexico
| | - Aloha Meave-González
- Department of Magnetic Resonance; Instituto Nacional de Cardiología “Ignacio Chávez”; Mexico City Mexico
| | - Samuel Ramírez Marroquín
- Department of Cardiovascular Surgery; Instituto Nacional de Cardiología “Ignacio Chávez”; Mexico City Mexico
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Iñiguez A, FATH-ORDOUBADHI F, Cebollero IC, Elsässer A, Atmowihardjo I, Gaspar J, Lesiak M, OPPENLÄNDER K, Ngoc NQ, Roguin A, Spyrou N. TCT-574 Drug-eluting stent with biodegradable polymer in patients with STEMI – short and long term outcomes: data from e-NOBORI and NOBORI 2 trials. J Am Coll Cardiol 2012. [DOI: 10.1016/j.jacc.2012.08.609] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Friedmann A, Cismak A, Tautorat C, Koester PJ, Baumann W, Held J, Gaspar J, Ruther P, Paul O, Heilmann A. FIB preparation and SEM investigations for three-dimensional analysis of cell cultures on microneedle arrays. Scanning 2012; 34:221-229. [PMID: 22076793 DOI: 10.1002/sca.20297] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Accepted: 09/23/2011] [Indexed: 05/31/2023]
Abstract
We report the investigation of the interfaces between microneedle arrays and cell cultures in patch-on-chip systems by using Focused Ion Beam (FIB) preparation and Scanning Electron Microscopy (SEM). First, FIB preparations of micro chips are made to determine the size and shape of the designed microneedles. In this essay, we investigate the cell-substrate interaction, especially the cell adhesion, and the microneedle's potential cell penetration. For this purpose, cross-sectional preparation of these hard/soft hybrid structures is performed by the FIB technology. By applying the FIB technology followed by high-resolution imaging with SEM, new insights into the cell-substrate interface can be received. One can clearly distinguish between cells that are only in contact with microneedles and cells that are penetrated by microneedles. A stack of slice images is collected by the application of the slice-and-view setup during FIB preparation and is used for three-dimensional reconstruction of cells and micro-needles.
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Affiliation(s)
- A Friedmann
- Fraunhofer Institute for Mechanics of Materials IWM, Halle (Saale), Germany.
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Fernandes AS, Costa J, Gaspar J, Rueff J, Cabral MF, Cipriano M, Castro M, Oliveira NG. Development of pyridine-containing macrocyclic copper(II) complexes: potential role in the redox modulation of oxaliplatin toxicity in human breast cells. Free Radic Res 2012; 46:1157-66. [DOI: 10.3109/10715762.2012.695869] [Citation(s) in RCA: 11] [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: 12/30/2022]
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Esteves F, Gaspar J, de Sousa B, Antunes F, Mansinho K, Matos O. Pneumocystis jirovecii multilocus genotyping in pooled DNA samples: a new approach for clinical and epidemiological studies. Clin Microbiol Infect 2012; 18:E177-84. [DOI: 10.1111/j.1469-0691.2012.03828.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [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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Costa C, Costa S, Silva S, Coelho P, Botelho M, Gaspar J, Rueff J, Laffon B, Teixeira JP. DNA damage and susceptibility assessment in industrial workers exposed to styrene. J Toxicol Environ Health A 2012; 75:735-746. [PMID: 22788361 DOI: 10.1080/15287394.2012.688488] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Styrene is a widely used chemical in the manufacture of synthetic rubber, resins, polyesters, and plastics. The highest levels of human exposure to styrene occur during the production of reinforced plastic products. The objective of this study was to examine occupational exposure to styrene in a multistage approach, in order to integrate the following endpoints: styrene in workplace air, mandelic and phenylglyoxylic acids (MA + PGA) in urine, sister chromatid exchanges (SCE), micronuclei (MN), DNA damage (comet assay), and genetic polymorphisms of metabolizing enzymes (CYP2E1, EPHX1, GSTM1, GSTT1, and GSTP1). Seventy-five workers from a fiberglass-reinforced plastics factory and 77 unexposed controls took part in the study. The mean air concentration of styrene in the breathing zone of workers (30.4 ppm) and the mean concentration of urinary metabolites (MA + PGA = 443 ± 44 mg/g creatinine) exceeded the threshold limit value (TLV) and the biological exposure index (BEI). Significantly higher SCE frequency rate and DNA damage were observed in exposed workers, but MN frequency was not markedly modified by exposure. With respect to the effect of genetic polymorphisms on different exposure and effect biomarkers studied, an increase in SCE levels with elevated microsomal epoxide hydrolase activity was noted in exposed workers, suggesting a possible exposure-genotype interaction.
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Affiliation(s)
- Carla Costa
- Portuguese National Institute of Health, Environmental Health Department, Porto, Portugal.
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Neider M, Gaspar J, McCarley J, Crowell J, Kaczmarski H, Kramer A. Pedestrians, Automobiles, and Cell Phones; Examining the Effects of Divided Attention and Aging in a Realistic Virtual Reality Street Crossing Task. J Vis 2011. [DOI: 10.1167/11.11.98] [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: 11/24/2022] Open
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Gaspar J, Neider M, Simons D, McCarley J, Kramer A. Change Detection: Training and Transfer. J Vis 2011. [DOI: 10.1167/11.11.155] [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] Open
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Jagtap S, Meganathan K, Gaspar J, Wagh V, Winkler J, Hescheler J, Sachinidis A. Cytosine arabinoside induces ectoderm and inhibits mesoderm expression in human embryonic stem cells during multilineage differentiation. Br J Pharmacol 2011; 162:1743-56. [PMID: 21198554 DOI: 10.1111/j.1476-5381.2010.01197.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND AND PURPOSE Teratogenic substances induce adverse effects during the development of the embryo. Multilineage differentiation of human embryonic stem cells (hESCs) mimics the development of the embryo in vitro. Here, we propose a transcriptomic approach in hESCs for monitoring specific toxic effects of compounds as an alternative to traditional time-consuming and cost-intensive in vivo tests requiring large numbers of animals. This study was undertaken to explore the adverse effects of cytosine arabinoside (Ara-C) on randomly differentiated hESCs. EXPERIMENTAL APPROACH Human embryonic stem cells were used to investigate the effects of a developmental toxicant Ara-C. Sublethal concentrations of Ara-C were given for two time points, day 7 and day 14 during the differentiation. Gene expression was assessed with microarrays to determine the dysregulated transcripts in presence of Ara-C. KEY RESULTS Randomly differentiated hESCs were able to generate the multilineage markers. The low concentration of Ara-C (1 nM) induced the ectoderm and inhibited the mesoderm at day 14. The induction of ectodermal markers such as MAP2, TUBB III, PAX6, TH and NESTIN was observed with an inhibition of mesodermal markers such as HAND2, PITX2, GATA5, MYL4, TNNT2, COL1A1 and COL1A2. In addition, no induction of apoptosis was observed. Gene ontology revealed unique dysregulated biological process related to neuronal differentiation and mesoderm development. Pathway analysis showed the axon guidance pathway to be dysregulated. CONCLUSIONS AND IMPLICATIONS Our results suggest that hESCs in combination with toxicogenomics offer a sensitive in vitro developmental toxicity model as an alternative to traditional animal experiments.
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Affiliation(s)
- S Jagtap
- Center of Physiology and Pathophysiology, Institute of Neurophysiology, Cologne, Germany
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Peña-Duque MA, Martínez-Ríos MA, Calderón G E, Mejía AM, Gómez E, Martínez-Sánchez C, Figueroa J, Gaspar J, González H, Bialoztosky D, Meave A, Uribe-González J, Alexánderson E, Ochoa V, Masso F. Design and implementation of the TRACIA: intracoronary autologous transplant of bone marrow-derived stem cells for acute ST elevation myocardial infarction. Arch Cardiol Mex 2011; 81:183-187. [PMID: 21975231] [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
OBJECTIVE To describe the design of a protocol of intracoronary autologous transplant of bone marrow-derived stem cells for acute ST-elevation myocardial infarction (STEMI) and to report the safety of the procedure in the first patients included. METHODS The TRACIA study was implemented following predetermined inclusion and exclusion criteria. The protocol includes procedures such as randomization, bone marrow retrieval, stem cells processing, intracoronary infusion of stem cells in the infarct-related artery, preand- post MRI, pre-and-post SPECT with radioisotope ventriculography, and clinical follow-up at 6 months. RESULTS Eight patients with a diagnosis of acute STEMI and duration of symptoms of ?24 hours that were perfused successfully through primary percutaneous coronary intervention (PPCI) with a LVEF of ?45% were assigned randomly to two groups (n = 4 each). One group treated with stem cells and the other corresponded to the control group. Neither death, re-infarction, no need for revascularization or thrombosis of the stent were observed at follow-up. CONCLUSIONS The initial experience at the Instituto Nacional de Cardiología Ignacio Chávez in the treatment of acute STEMI by means of autologous transplantation of bone marrow-derived stem cells is encouraging. Implementation was possible in the first eight patients with no complications.
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Affiliation(s)
- Marco A Peña-Duque
- Instituto Nacional de Cardiología Ignacio Chávez. The contributions by Marco A. Peña-Duque and Marco A. Martínez-Ríos are equal and the order of authorship is arbitrary
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Conceicao L, Araújo M, Rocha F, Oliveira A, Gaspar J, Lopes M. 1454 poster SIX YEARS EXPERIENCE OF AN INTERNAL INCIDENT REPORTING SYSTEM. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71576-6] [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: 10/18/2022]
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Sandoval J, Gaspar J, Peña H, Santos LE, Córdova J, del Valle K, Rodríguez A, Pulido T. Effect of atrial septostomy on the survival of patients with severe pulmonary arterial hypertension. Eur Respir J 2011; 38:1343-8. [PMID: 21349914 DOI: 10.1183/09031936.00072210] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Atrial septostomy (AS) is a palliative treatment for right ventricular failure from severe pulmonary arterial hypertension (PAH). We sought to investigate the effect of AS, alone or combined with PAH-specific pharmacotherapy, on the survival of patients with PAH. We performed a retrospective analysis of the functional and haemodynamic changes in patients with PAH following AS, and long-term survival characteristics for the whole group and separately for the subgroup who received post-procedural pharmacotherapy. 50 procedures performed in 34 patients (mean ± SD age 35 ± 10 yrs) resulted in haemodynamic and symptomatic improvement in most of the patients. Only one (2%) procedure-related death occurred. Due to spontaneous closure of the defect, AS was repeated in 10 patients. In 21 patients, AS was the only form of treatment, while 11 received additional pharmacotherapy after AS. During follow-up (58.5 ± 38 months), 21 patients died; median survival of the group was 60 months (95% CI 43-77 months). Median survival for patients on pharmacotherapy additional to AS was 83 months (95% CI 57-109 months), which was better than that for patients with AS alone (53 months, 95% CI 39-67 months) (log-rank 6.52; p = 0.010). In selected patients with PAH, AS is a safe and effective intervention that exerts a beneficial impact on long-term survival. Survival appears to be improved when AS is combined with PAH-specific pharmacotherapy.
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Affiliation(s)
- J Sandoval
- Cardiopulmonary Dept, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano No 1, Colonia Sección XVI, Tlalpan, 14080 México, DF México, Mexico.
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Abstract
AbstractThis paper reports on the fabrication and characterization of microelectromechanical bridge resonators on glass substrates using thin-film technology and surface micromachining. All the processing steps are performed at temperatures below 110°C. The microbridges consist of either a single layer of heavily doped n-type amorphous silicon (n+-a-Si:H) or bilayers of aluminum (Al) and intrinsic a-Si:H. The bridge is suspended over a gate electrode with a 1 μm air-gap. Applying a voltage between the bridge and an underlying Al gate electrode electrostatically actuates the microstructures. The resulting deflection is monitored optically. The resonance of the microbridges is measured in air and in vacuum. Resonance frequencies up to 70 MHz and quality factors up to 3000 are obtained at pressures below 1 Torr. The energy dissipation mechanisms of the resonators are discussed.
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Porto B, Sousa R, Malheiro I, Gaspar J, Rueff J, Gonçalves C, Barbot J. Normal red blood cells partially decrease diepoxybutane-induced chromosome breakage in cultured lymphocytes from Fanconi anaemia patients. Cell Prolif 2010; 43:573-8. [PMID: 21039995 DOI: 10.1111/j.1365-2184.2010.00706.x] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVES Fanconi anaemia (FA) is a cancer-prone chromosome instability syndrome characterized by hypersensitivity to DNA cross-linking agents, such as diepoxybutane (DEB). Previous studies have shown that normal red blood cells (RBC) can protect cultured lymphocytes against chromosomal breaks induced by DEB. The present study was designed to analyse influence of RBCs from normal individuals on frequency of DEB-induced chromosome breaks in lymphocyte cultures from FA patients. MATERIALS AND METHODS A comparative study was performed between DEB-induced chromosome breaks in cultures of FA lymphocytes with either autologous or heterologous RBCs. A further comparative study was carried out between whole blood cultures from FA patients performed on two occasions, before and 1 week after transfusion of RBCs. RESULTS It was observed that normal RBCs compared to FA RBCs, partially reduced chromosome breaks in cultured FA lymphocytes. A significant reduction in DEB-induced breaks was also observed in FA cultured lymphocytes obtained 1 week after transfusion of RBCs, in comparison to those observed in the same patients before RBC transfusion. CONCLUSIONS This study shows that DEB-induced chromosome instability in FA lymphocytes is partially reduced by normal RBCs. This effect may have some clinical relevance in vivo, whenever FA patients receive a RBC transfusion.
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Affiliation(s)
- B Porto
- Laboratory of Cytogenetics, ICBAS-Institute of Biomedical Sciences Abel Salazar, UP, Porto, Portugal.
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Teixeira JP, Gaspar J, Coelho P, Costa C, Pinho-Silva S, Costa S, Da Silva S, Laffon B, Pásaro E, Rueff J, Farmer P. Cytogenetic and DNA damage on workers exposed to styrene. Mutagenesis 2010; 25:617-21. [PMID: 20729469 DOI: 10.1093/mutage/geq049] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Styrene is a commercially important chemical widely used in the manufacture of synthetic rubber, resins, polyesters and plastics. The highest levels of human exposure to styrene occur during the production of reinforced plastic products. The objective of this work was to evaluate both DNA and cytogenetic damage in styrene-exposed workers, analysing only non-smoker individuals. Environmental levels of styrene and urinary concentrations of mandelic and phenylglyoxylic acids were determined, and genetic damage was studied by means of micronucleus (MN) test, sister chromatid exchanges (SCEs) and comet assay. Fifty-two fibreglass-reinforced plastics workers and 54 controls took part in the study. The mean air concentration of styrene in the breathing zone of workers exceeded the threshold limit value, and 24 workers exceeded the biological exposure index. A strong and significant correlation was found between styrene environmental concentrations and urinary metabolites. Higher SCE rate (P<0.01) was observed in exposed workers than in controls. Besides, significant correlations were obtained for SCE rate with both environmental and internal exposure parameters (r=0.496, P<0.01 and r=0.511, P<0.01, respectively). Results from MN test and comet assay showed slight and non-significant increases related to the exposure. Our data seem to support previous studies reporting genotoxicity associated with occupational exposure to styrene, excluding the confounding influence of smoking, although caution must be taken in the interpretation of these results since the significance of an increase in SCE rate is still unclear.
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Affiliation(s)
- João Paulo Teixeira
- Environmental Health Department, National Institute of Health, Rua Alexandre Herculano, 321, 4000-055 Porto, Portugal.
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Costa S, Silva S, Costa C, Coelho P, Pina C, Gaspar J, Tavares A, Teixeira J. Formaldehyde occupational exposure: Genotoxic evaluation. Toxicol Lett 2010. [DOI: 10.1016/j.toxlet.2010.03.283] [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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Esteves F, Gaspar J, Marques T, Leite R, Antunes F, Mansinho K, Matos O. Identification of relevant single-nucleotide polymorphisms in Pneumocystis jirovecii: relationship with clinical data. Clin Microbiol Infect 2010; 16:878-84. [DOI: 10.1111/j.1469-0691.2009.03030.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fernandes AS, Gaspar J, Cabral MF, Rueff J, Castro M, Batinic-Haberle I, Costa J, Oliveira NG. Protective role of ortho-substituted Mn(III) N-alkylpyridylporphyrins against the oxidative injury induced by tert-butylhydroperoxide. Free Radic Res 2010; 44:430-40. [PMID: 20102317 DOI: 10.3109/10715760903555844] [Citation(s) in RCA: 25] [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: 12/19/2022]
Abstract
The present work addresses the role of two ortho-substituted Mn(III) N-alkylpyridylporphyrins, alkyl being ethyl in MnTE-2-PyP(5+) and n-hexyl in MnTnHex-2-PyP(5+), on the protection against the oxidant tert-butylhydroperoxide (TBHP). Their protective role was studied in V79 cells using endpoints of cell viability (MTT and crystal violet assays), intracellular O(2)*- generation (dihydroethidium assay) and glutathione status (DTNB and monochlorobimane assays). MnPs per se did not show cytotoxicity (up to 25 microM, 24 h). The exposure to TBHP resulted in a significant decrease in cell viability and in an increase in the intracellular O(2)(*-) levels. Also, TBHP depleted total and reduced glutathione and increased GSSG. The two MnPs counteracted remarkably the effects of TBHP. Even at low concentrations, both MnPs were protective in terms of cell viability and abrogated the intracellular O(2)(*-) increase in a significant way. Also, they augmented markedly the total and reduced glutathione contents in TBHP-treated cells, highlighting the multiple mechanisms of protection of these SOD mimics, which at least in part may be ascribed to their electron-donating ability.
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Affiliation(s)
- Ana S Fernandes
- iMed.UL, Faculty of Pharmacy, University of Lisbon, Lisboa, Portugal
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Esteves F, Gaspar J, Tavares A, Moser I, Antunes F, Mansinho K, Matos O. Population structure of Pneumocystis jirovecii isolated from immunodeficiency virus-positive patients. Infection, Genetics and Evolution 2010; 10:192-9. [DOI: 10.1016/j.meegid.2009.12.007] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Revised: 12/18/2009] [Accepted: 12/25/2009] [Indexed: 11/29/2022]
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Ruiz R, García B, Garcia-Tojal J, Busto N, Ibeas S, Leal JM, Martins C, Gaspar J, Borrás J, Gil-García R, González-Alvarez M. Biological assays and noncovalent interactions of pyridine-2-carbaldehyde thiosemicarbazonecopper(II) drugs with [poly(dA-dT)](2), [poly(dG-dC)] (2), and calf thymus DNA. J Biol Inorg Chem 2010; 15:515-32. [PMID: 20087612 DOI: 10.1007/s00775-009-0620-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2009] [Accepted: 12/14/2009] [Indexed: 11/29/2022]
Abstract
The interaction of the Cu(II) drugs CuL(NO(3)) and CuL'(NO(3)) (HL is pyridine-2-carbaldehyde thiosemicarbazone and HL' is pyridine-2-carbaldehyde 4N-methylthiosemicarbazone, in water named [CuL](+) and [CuL'](+)) with [poly(dA-dT)](2), [poly(dG-dC)](2), and calf thymus (CT) DNA has been probed in aqueous solution at pH 6.0, I = 0.1 M, and T = 25 degrees C by absorbance, fluorescence, circular dichroism, and viscosity measurements. The results reveal that these drugs act as groove binders with [poly(dA-dT)](2), with a site size n = 6-7, whereas they act as external binders with [poly(dG-dC)](2) and/or CT-DNA, thus establishing overall electrostatic interaction with n = 1. The binding constants with [CuL'](+) were slightly larger than with [CuL](+). The title compounds display some cleavage activity in the presence of thiols, bringing about the rupture of the DNA strands by the reactive oxygen species formed by reoxidation of Cu(I) to Cu(II); this feature was not observed in the absence of thiols. Mutagenic assays performed both in the presence and in the absence of S9 mix, probed by the Ames test on TA 98, TA 100, and TA 102, were negative. Weak genotoxic activity was detected for [CuL](+) and [CuL'](+), with a significative dose-response effect for [CuL'](+), which was shown to be more cytotoxic in the Ames test and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide cell proliferation assays. Methylation of the terminal NH(2) group enhances the antiproliferative activity of the pyridine-2-carbaldehyde thiosemicarbazones.
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Affiliation(s)
- Rebeca Ruiz
- Departamento de Química, Universidad de Burgos, 09001, Burgos, Spain
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Eid-Lidt G, Gaspar J, Adames AE, Damas de Los Santos F, Valdez R I, Ramírez-Gutiérrez AE, Martínez-Ríos MA. Long-term outcomes of saphenous vein graft stenting compared with native coronary artery stenting in patients with previous coronary artery bypass graft surgery. Arch Cardiol Mex 2010; 80:3-9. [PMID: 21147555] [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: 05/30/2023] Open
Abstract
OBJECTIVE Our main objective was to compare the in-hospital and long-term outcomes of saphenous vein graft stenting and native coronary artery stenting in patients with previous coronary artery bypass grafting. METHODS We studied 127 patients who had prior coronary artery bypass; they were divided in two groups, according to the kind of percutaneous coronary intervention performed. The first group included 49 patients with saphenous vein graft stenting and the second group included 78 patients who underwent native coronary artery stenting. RESULTS There was no significant difference in age, incidence of diabetes, smoking, arterial hypertension, dyslipidemia, left ventricular ejection fraction or in the New York Heart Association functional class between both groups. The incidence of no reflow phenomenon was higher in group 1 (10.2% vs. 1.2%, p = 0.0001). The cumulative incidence of major adverse cardiac events was different between groups at 1 month (10.2% vs. 2.5%, p = 0.041). There was a lower MACE (major adverse cardiovascular events) free survival at 36 months in the saphenous vein graft stenting group (65.0% vs. 89.1%, p = 0.024). CONCLUSIONS Major in-hospital complications occurred more frequently in the saphenous vein graft stented group. MACE-free survival at 3 years was higher in the native coronary artery stent patients.
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Affiliation(s)
- Guering Eid-Lidt
- Department of Interventional Cardiology. Instituto Nacional de Cardiología Ignacio Chávez
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Affiliation(s)
- Antonio Colombo
- San Raffaele Scientific Institute and EMO-GVM, Milan, Italy.
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Costa MC, Gaspar J, Mansinho K, Esteves F, Antunes F, Matos O. Detection of Pneumocystis jirovecii dihydropteroate synthase polymorphisms in patients with Pneumocystis pneumonia. ACTA ACUST UNITED AC 2009; 37:766-71. [PMID: 16191898 DOI: 10.1080/00365540510038505] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In the present study, in order to improve the detection of Pneumocystis jirovecii dihydropteroate synthase (DHPS) mutations in pulmonary specimens of HIV-infected patients with P. jirovecii pneumonia, we evaluated a microfiltration procedure for the removal of human cell contamination and a nested-PCR method, for amplification in specimens with low parasite load. In the studied population, PCR amplification of the DHPS gene was more successful in unfiltered than in filtered specimens, with both touchdown-PCR and nested-PCR procedures (p<0.05 and p<0.001, respectively), but the amount of host DNA in the samples analysed seems to be inversely related with the successful PCR parasite detection. Amplification of P. jirovecii DHPS gene with nested-PCR was achieved in 77.5% of the specimens studied, demonstrating that this is a useful method for the identification of mutations in pulmonary specimens, including samples with low parasite loads, and will facilitate the evaluation of the relationship between the P. jirovecii DHPS polymorphisms and clinical resistance to sulfa drugs.
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Affiliation(s)
- M C Costa
- Unidade de Protozoários Oportunistas/VIH e outras Protozooses, Unidade de Parasitologia e Microbiologia Médicas (UPMM), Instituto de Higiene e Medicina Tropical, Lisboa, Portugal
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Martínez-Ríos MA, Méndez-Ortíz A, Gaspar J, Barragán-García R, Fernández-de-la-Reguera G, González-Quesada CJ. Left main coronary artery stenosis treatment with two paclitaxel-eluting stents in a patient with cardiac allograft vasculopathy. Arch Cardiol Mex 2008; 78:407-412. [PMID: 19205549] [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: 05/27/2023] Open
Abstract
Cardiac transplantation is a well defined therapy for end stage heart failure. After the first year of transplantation, allograft coronary artery disease (ACAD) is the second main cause of death. The ACAD is defined as a diffuse process affecting the entire length of epicardial vessels. Once ACAD has been established, treatments such as coronary angioplasty, coronary stenting, and coronary bypass are performed. We present a case of successful stenting of the left main coronary artery (LMCA) in a patient with ACAD. The patient's medical history was significant for heart transplantation due to ischemic heart failure. Four years after transplantation the patient was admitted again due to sudden worsening of New York Heart Association functional class and extreme fatigue. Coronary angiogram showed a severe stenosis in the proximal segment of the LMCA; we performed stenting with a paclitaxel-eluting stent (PES). Six months after the procedure, the patient had an elective angiogram, where we discovered a new severe occlusion distally to the former stent; a second PES was implanted. Fourteen months after the second stenting, a new elective angiogram was performed without evidence of in-stent restenosis. After a 8-year follow-up since transplantation, the patient is free from dyspnea, angina, and adverse cardiovascular events. Our report suggests the efficacy of PES as ACAD treatment of the unprotected LMCA.
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Affiliation(s)
- Marco A Martínez-Ríos
- Interventional Cardiology Department, Instituto Nacional de Cardiología, Ignacio Chávez, DF México.
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