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van der Star A, Randall A, Calzo JP, Weersing VR, Rojas SA, Williams K, Alexander J, Blashill AJ, Wells KJ. Feasibility and Acceptability of a Patient Navigation Intervention to Prevent Suicide in LGBTQ Youth and Young Adults. Eur J Public Health 2021. [DOI: 10.1093/eurpub/ckab164.473] [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
Across Western countries, young LGBTQ+ individuals are at a four to seven-fold increased risk of attempting suicide, compared to the general public. Despite these substantial health disparities, no known empirically supported suicide prevention programs exist for this highly vulnerable population. Patient navigation (PN), as an intervention to assist people in overcoming barriers to care, paired with the Safety Planning Intervention (SPI), may be a promising intervention to target mechanisms (e.g., thwarted belongingness and suicide-related coping skills) that theoretically underlie suicide. The purpose of this presentation is to describe the developed intervention and present initial data on its feasibility and acceptability.
Methods
In collaboration with a Participatory Planning Group (PPG), an iterative process was used to develop a PN+SPI intervention to prevent suicide among at-risk LGBTQ+ youth and young adults. A mixed-methods case series was used to examine feasibility and acceptability of implementing the PN+SPI intervention over a three-month period of time.
Results
Theoretical models regarding suicidality and LGBTQ+ mental health along with PPG feedback have informed the development of the PN+SPI intervention, with 7 modules included in feasibility evaluation: 1) Introduction + SPI; 2) Minority Stress Psychoeducation; 3) Barriers to Mental Health Services; 4) Barriers to Community Resources; 5) Decision Making; 6) Crisis Intervention; and 7) Wrap Up.
Conclusions
This project has the potential for reducing mortality and morbidity due to suicide attempts among LGBTQ+ youth/emerging adults, who are one of the most vulnerable groups for attempting suicide globally. Given the brevity of the PN+SPI intervention and its emphasis on safety planning and accessing community resources, the PN+SPI intervention has high potential for wide dissemination and public health impact, should it demonstrate feasibility, acceptability, and preliminary efficacy.
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Affiliation(s)
- A van der Star
- San Diego State University Research Foundation, San Diego, USA
- Division of Psychology, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - A Randall
- San Diego State University Research Foundation, San Diego, USA
| | - JP Calzo
- School of Public Health, San Diego State University, San Diego, USA
| | - VR Weersing
- Department of Psychology, San Diego State University, San Diego, USA
- UC San Diego Joint Doctoral Program in Clinical Psychology, San Diego State University, San Diego, USA
| | - SA Rojas
- Family Health Centers of San Diego, San Diego, UK
| | - K Williams
- Family Health Centers of San Diego, San Diego, UK
| | - J Alexander
- San Diego State University Research Foundation, San Diego, USA
| | - AJ Blashill
- Department of Psychology, San Diego State University, San Diego, USA
- UC San Diego Joint Doctoral Program in Clinical Psychology, San Diego State University, San Diego, USA
| | - KJ Wells
- Department of Psychology, San Diego State University, San Diego, USA
- UC San Diego Joint Doctoral Program in Clinical Psychology, San Diego State University, San Diego, USA
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2
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Peiro Ibanez OM, Ordonez J, Garcia A, Bonet G, Quintern V, Rojas S, Bardaji A. P3825Long-term prognostic value of growth differentiation factor-15 in acute coronary syndrome. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0667] [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
Introduction
Biomarkers plays a critical role in diagnostic, prognostication, and decision-making in cardiovascular medicine. Growth differentiation factor-15 (GDF-15) has been reported as a potential biomarker in acute coronary syndrome (ACS). However, there is limited data on the long-term prognostic value after an ACS.
Purpose
To study the long-term prognostic value of GDF-15 in ACS.
Methods
We included patients with ACS who underwent coronary angiography. During angiography an arterial blood sample was collected. Plasma GDF-15 were measured and clinical data and long-term events were obtained. As previously reported, risk categories were defined as low risk (<1200ng/L), intermediate (1200–1800ng/L) and high risk (>1800ng/L). Incremental prognostic value of GDF-15 for all-cause death was assessed on top of a clinical model (GRACE score, LVEF<40% and age).
Results
A total of 358 patients were included; 157 as a low risk, 85 as an intermediate and 116 as a high risk. The median (IQR) age was 65 (56–74) years and 27.4% were female. Of all patients, 61.5% were admitted with non-ST-elevation myocardial infarction, 24.0% with ST-elevation myocardial infarction and 14.5% with unstable angina. Higher values of GDF-15 were consistently associated with an increased prevalence of cardiovascular risk factors. During 6 years of follow-up 54 patients died. Of those patients, 7 (4.5%) had values of GDF-15 below 1200ng/L, 6 (7.1%) between 1200–1800ng/L and 41 (35.3%) above 1800ng/L. After adjustment for a multivariate Cox regression model, GDF-15 >1800ng/L were independently associated with all-cause death (HR 4.5; 95% CI 1.8–11.6; p=0.002) and the composite of major adverse cardiovascular events (MACE) which were identified as all-cause death, nonfatal MI and heart failure (HR 2.5; 95% CI 1.4–4.4; p=0.001). For long-term all-cause death a significant increase of the c-statistic was seen after addition of GDF-15 to the clinical model 0.871 (95% CI 0.817–0.924; p=0.019) as well as net reclassification improvement (0.769; 95% CI 0.487–1.051; p<0.001) and integrated discrimination improvement (0.117; 95% CI 0.062–0.172; p<0.001). Of 18 events of heart failure, 17 occurred in patients with GDF>1800ng/L. A multivariate competing risk model showed a significant association between GDF-15>1800ng/L and incidence of heart failure (adjusted HR 30.8; 95% CI 4.1–231.5; p=0.001) but non-significant association were found for myocardial infarction.
KM figures and all-cause death ROC curve
Conclusions
In the setting of ACS GDF-15 can predict long-term all-cause death, MACE and heart failure and provides incremental prognostic value beyond traditional risks factors in the long-term all-cause death.
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Affiliation(s)
| | - J Ordonez
- Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - A Garcia
- Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - G Bonet
- Hospital Universitario Joan XXIII, Cardiology, Tarragona, Spain
| | - V Quintern
- Hospital Universitario Joan XXIII, Cardiology, Tarragona, Spain
| | - S Rojas
- Hospital Universitario Joan XXIII, Cardiology, Tarragona, Spain
| | - A Bardaji
- Hospital Universitario Joan XXIII, Cardiology, Tarragona, Spain
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3
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Peiro Ibanez OM, Farre N, Ordonez-Llanos J, Garcia A, Bonet G, Quintern V, Rojas S, Bardaji A. P6437Growth differentiation factor-15 and stromal cell-derived factor-1 as long-term prognosis biomarkers in acute coronary syndrome. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.1031] [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: 11/14/2022] Open
Abstract
Abstract
Introduction
After an acute coronary syn bdrome (ACS) patients are at high risk of cardiovascular morbidity and mortality. In this scenario, Growth differentiation factor-15 (GDF-15) and Stromal cell derived factor-1 (SDF-1) has been reported as potential biomarkers in ACS. However, there is limited data about their combined use in long-term prognosis.
Purpose
To study the long-term prognostic value of GDF-15 and SDF-1 in ACS.
Methods
We included patients with ACS who underwent coronary angiography. During angiography an arterial blood sample was collected. Plasma SDF-1 and GDF-15 were measured and clinical data and long-term events were obtained. The cut-off point of SDF-1 and GDF-15 was identified individually by receiver operating characteristic curves. Patients were classified into 3 groups: 1) both biomarkers below cut-off points; 2) only one biomarker above cut-off points; 3) both biomarkers above cut-off points.
Results
A total of 238 patients were included. The median (IQR) age was 64 (55–74) year and 27.3% were female. Of all patients, 60.9% were admitted with non-ST-elevation myocardial infarction, 22.7% with ST-elevation myocardial infarction and 16.4% with unstable angina. The cut-off point of SDF-1 was 3283.5pg/mL and GDF-15 was 1849ng/L. A total of 127 patients were in group 1, 64 in group 2 and 47 in group 3. Group 3 patients were associated with older age, hypertension, dyslipidemia, diabetes mellitus and history of myocardial infarction (MI), stroke, chronic kidney disease and peripheral artery disease. Besides, they were more likely to have left ventricular dysfunction (ejection fraction <40%) and significant three vessels stenosis. During 6.5 years of follow-up 8 patients died (6.3%) in group 1, 7 patients died (10.9%) in group 2 and 25 patients died (53.2%) in group 3 (Figure 1). Multivariate Cox analysis showed that high levels of SDF-1 and GDF-15 (group 3) were an independent predictor of all-cause death (HR 5.8; 95% CI 2.4 - 14.1; p<0.001) and the composite of major adverse cardiovascular events (MACE) which were identified as all-cause death, nonfatal MI and heart failure (HR 3.9; 95% CI 2.1 - 7.3; p<0.001). During follow-up 1 patient had heart failure in group 1 (0.8%), 3 patients (4.7%) in group 2 and 9 patients (19.1%) in group 3. Despite the low number of events of heart failure, the multivariate competing risks regression showed association between group 3 and heart failure during follow-up (HR 28.0; 95% CI 3.5 - 225.2; p=0.002). Higher levels of SDF-1 and GDF-15 (group 3) were not associated with new MI in multivariate competing risks regression. Regarding group 2, all multivariate analyses were non-significant.
Cumulative survival and incidence curves
Conclusions
Higher values of combined GDF-15 and SDF-1 are an excellent predictor of all-cause death, MACE and heart failure in long-term follow-up of patients with ACS. The combined use of SDF-1 and GDF-15 may be useful in long-term ACS prognosis.
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Affiliation(s)
| | - N Farre
- Hospital del Mar, Cardiology, Barcelona, Spain
| | | | - A Garcia
- Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - G Bonet
- Hospital Universitario Joan XXIII, Cardiology, Tarragona, Spain
| | - V Quintern
- Hospital Universitario Joan XXIII, Cardiology, Tarragona, Spain
| | - S Rojas
- Hospital Universitario Joan XXIII, Cardiology, Tarragona, Spain
| | - A Bardaji
- Hospital Universitario Joan XXIII, Cardiology, Tarragona, Spain
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Rojas S, Ius F, Schibilsky D, Kaufeld T, Benk C, Goecke T, Avsar M, Poyanmehr R, Rümke S, Mogaldea A, Bobylev D, Salman J, Siemeni T, Bara C, Beyersdorf F, Haverich A, Siepe M, Warnecke G. Ex Vivo Heart Perfusion for Higher Risk Cardiac Transplantations: A Retrospective Analysis from Two German Centers. Thorac Cardiovasc Surg 2019. [DOI: 10.1055/s-0039-1678914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- S. Rojas
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
| | - F. Ius
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
| | - D. Schibilsky
- Universitäts Herzzentrum Freiburg Bad Krozingen, Freiburg, Germany
| | - T. Kaufeld
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
| | - C. Benk
- Universitäts Herzzentrum Freiburg Bad Krozingen, Freiburg, Germany
| | - T. Goecke
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
| | - M. Avsar
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
| | - R. Poyanmehr
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
| | - S. Rümke
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
| | - A. Mogaldea
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
| | - D. Bobylev
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
| | - J. Salman
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
| | - T. Siemeni
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
| | - C. Bara
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
| | - F. Beyersdorf
- Universitäts Herzzentrum Freiburg Bad Krozingen, Freiburg, Germany
| | - A. Haverich
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
| | - M. Siepe
- Universitäts Herzzentrum Freiburg Bad Krozingen, Freiburg, Germany
| | - G. Warnecke
- Medizinische Hochschule Hannover, Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Hannover, Germany
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Ferreira Gonzalez I, Ribera AR, Marsal JR, Faixedas M, Rosas A, Tizon-Marcos HT, Rojas S, Labata C, Cardenas M, Homs S, Tomas-Querol C, Garcia-Picart J, Roura G, Masotti M, Mauri J. P1719Validity of DAPT score to predict late ischemic and hemorrhagic events in patients with ST-segment-elevation acute coronary syndrome. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - A R Ribera
- University Hospital Vall d'Hebron, Barcelona, Spain
| | - J R Marsal
- University Hospital Vall d'Hebron, Barcelona, Spain
| | | | - A Rosas
- Department of Health, Barcelona, Spain
| | - H T Tizon-Marcos
- Hospital del Mar Medical Research Institute (IMIM), Departament de Salut. Generalitat de Cataluña, Barcelona, Spain
| | - S Rojas
- Hospital Joan XXIII, Barcelona, Spain
| | - C Labata
- University Hospital Trias i Pujol, Barcelona, Spain
| | - M Cardenas
- University Hospital de Girona Dr. Josep Trueta, Girona, Spain
| | - S Homs
- University Hospital Mutua de Terrassa, Terrassa, Spain
| | | | | | - G Roura
- University Hospital of Bellvitge, Barcelona, Spain
| | - M Masotti
- Hospital Clinic de Barcelona, Barcelona, Spain
| | - J Mauri
- University Hospital Trias i Pujol, Barcelona, Spain
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6
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Ius F, Berchtold-Herz M, Rojas S, Kaufeld T, Scheunemann J, Avsar M, Salman J, Bara C, Beyersdorf F, Haverich A, Warnecke G, Siepe M. Heart Preservation with the Organ Care System in Germany: Revival in High-Risk Recipients. Thorac Cardiovasc Surg 2018. [DOI: 10.1055/s-0038-1628003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- F. Ius
- Department of Cardio-thoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - M. Berchtold-Herz
- Department of Thoracic and Cardiovascular Surgery, University of Freiburg, Freiburg im Breisgau, Germany
| | - S. Rojas
- Department of Cardio-thoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - T. Kaufeld
- Department of Cardio-thoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - J. Scheunemann
- Department of Thoracic and Cardiovascular Surgery, University of Freiburg, Freiburg im Breisgau, Germany
| | - M. Avsar
- Department of Cardio-thoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - J. Salman
- Department of Cardio-thoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - C. Bara
- Department of Cardio-thoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - F. Beyersdorf
- Department of Thoracic and Cardiovascular Surgery, University of Freiburg, Freiburg im Breisgau, Germany
| | - A. Haverich
- Department of Cardio-thoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - G. Warnecke
- Department of Cardio-thoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - M. Siepe
- Department of Thoracic and Cardiovascular Surgery, University of Freiburg, Freiburg im Breisgau, Germany
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Rojas S, Avsar M, Ius F, Kaufeld T, Salman J, Siemeni T, Goecke T, Poyanmehr R, Uribarri A, Schmitto J, Bara C, Haverich A, Warnecke G. Cardiac Transplantation in the VAD Era: Twenty-Year Experience of a Single Center. Thorac Cardiovasc Surg 2018. [DOI: 10.1055/s-0038-1628007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- S. Rojas
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Germany
| | - M. Avsar
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Germany
| | - F. Ius
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Germany
| | - T. Kaufeld
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Germany
| | - J. Salman
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Germany
| | - T. Siemeni
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Germany
| | - T. Goecke
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Germany
| | - R. Poyanmehr
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Germany
| | - A. Uribarri
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Germany
| | - J. Schmitto
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Germany
| | - C. Bara
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Germany
| | - A. Haverich
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Germany
| | - G. Warnecke
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Germany
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Bahadori Z, Esmaielzadeh L, Karimi-Torshizi M, Seidavi A, Olivares J, Rojas S, Salem A, Khusro A, López S. The effect of earthworm ( Eisenia foetida ) meal with vermi-humus on growth performance, hematology, immunity, intestinal microbiota, carcass characteristics, and meat quality of broiler chickens. Livest Sci 2017. [DOI: 10.1016/j.livsci.2017.05.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Boethig D, Schwäblein I, Rojas S, Hanke J, Bobylev D, Haverich A, Schmitto J. Outcome of the First 100 Patients Treated with Minimally Invasively Implanted HVAD Heartware Left Heart Ventricular Assist Devices. Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1598841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- D. Boethig
- Hannover Medical School, Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover, Germany
| | - I. Schwäblein
- Hannover Medical School, Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover, Germany
| | - S. Rojas
- Hannover Medical School, Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover, Germany
| | - J. Hanke
- Hannover Medical School, Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover, Germany
| | - D. Bobylev
- Hannover Medical School, Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover, Germany
| | - A. Haverich
- Hannover Medical School, Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover, Germany
| | - J. Schmitto
- Hannover Medical School, Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover, Germany
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Abstract
This review highlights the latest advances of Metal Organic Frameworks (MOFs) in the promising biomedical domain, from their synthesis to their biorelated activities.
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Affiliation(s)
- S. Rojas
- Institut Lavoisier
- CNRS UMR8180m Université de Versailles. 45
- Av. Des Etats Unis 78035 Versailles Cedex
- France
| | - T. Devic
- Institut des Matériaux Jean Rouxel
- UMR 6502 CNRS Université de Nantes
- 44322 Nantes cedex 3
- France
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Carmona FJ, Rojas S, Romão CC, Navarro JAR, Barea E, Maldonado CR. One-pot preparation of a novel CO-releasing material based on a CO-releasing molecule@metal–organic framework system. Chem Commun (Camb) 2017; 53:6581-6584. [DOI: 10.1039/c7cc03605a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A hierarchical micro-mesoporous metal–organic framework has been used as a platform of a photoactivable CO-prodrug to prepare a novel CO-releasing material.
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Affiliation(s)
- F. J. Carmona
- Department of Inorganic Chemistry
- University of Granada
- 18071 Granada
- Spain
| | - S. Rojas
- Department of Inorganic Chemistry
- University of Granada
- 18071 Granada
- Spain
| | - C. C. Romão
- Instituto de Tecnologia Química e Biológica da Universidade Nova de Lisboa
- 2780-157 Oeiras
- Portugal
- Alfama Ltd., Instituto de Biologia Experimental e Tecnológica
- IBET
| | - J. A. R. Navarro
- Department of Inorganic Chemistry
- University of Granada
- 18071 Granada
- Spain
| | - E. Barea
- Department of Inorganic Chemistry
- University of Granada
- 18071 Granada
- Spain
| | - C. R. Maldonado
- Department of Inorganic Chemistry
- University of Granada
- 18071 Granada
- Spain
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12
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Rodriguez T, Cossio P, Rojas S, Moreno V, Veroz R, Leόn M, Aznar J, Espárrago M, Chamizo E. AB0514 Association of Anti-RO (SSA) Specificity with Clinical Manifestations in A spanish Population: Table 1. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.5053] [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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13
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Deniz E, Reiss N, Avsar M, Rojas S, Hanke SJ, Martens A, Tudorache I, Ismail I, Haverich A, Schmitto JD. The Clinical Impact of Atrial Arrhythmia in Patients with Left Ventricular Assist Device. Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571571] [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: 10/22/2022]
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14
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Rojas S, Avsar M, Hanke J, Deniz E, Hillert M, Tümler K, Kühn C, Martens A, Warnecke G, Shrestha M, Cebotari S, Haverich A, Schmitto J. Less Invasive LVAD Surgery in Cardiogenic Shock. Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571749] [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: 10/22/2022]
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te Wildt B, Hassan K, Steinbüchel T, Dieris-Hirche J, Rojas S, Hillemacher T, Löber S, Münte T, Mohammadi B, Szycik G. Abhängigkeitsphänomene, Aggressivität und Empathie bei exzessiven Nutzern von Computerspielen vom First-Person-Shooter-Typ. Suchttherapie 2015. [DOI: 10.1055/s-0035-1564214] [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: 10/22/2022]
Affiliation(s)
- B. te Wildt
- Klinik für Psychosomatische Medizin und Psychotherapie, LWL-Universitätsklinikum Bochum der Ruhr-Universität Bochum
| | - K. Hassan
- Klinikum Herford, Klinik für Kardiologie
| | - T. Steinbüchel
- Klinik für Psychosomatische Medizin und Psychotherapie, LWL-Universitätsklinikum Bochum der Ruhr-Universität Bochum
| | | | - S. Rojas
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Medizinische Hochschule Hannover
| | - T. Hillemacher
- Zentrum für Seelische Gesundheit, Medizinische Hochschule Hannover
| | - S. Löber
- Lehrstuhl für Klinische Psychologie und Psychotherapie, Universität Bamberg
| | - T. Münte
- Klinik für Neurologie, Universitätsklinikum Schleswig-Holstein, Lübeck
| | | | - G. Szycik
- Institut für Verhaltenstherapie und Verhaltensmedizin (AVVM), Zentrum für Seelische Gesundheit, Medizinische Hochschule Hannover
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Gispert JD, Rami L, Sánchez-Benavides G, Falcon C, Tucholka A, Rojas S, Molinuevo JL. Nonlinear cerebral atrophy patterns across the Alzheimer's disease continuum: impact of APOE4 genotype. Neurobiol Aging 2015; 36:2687-701. [PMID: 26239178 DOI: 10.1016/j.neurobiolaging.2015.06.027] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 06/26/2015] [Accepted: 06/30/2015] [Indexed: 01/11/2023]
Abstract
The progression of Alzheimer's disease (AD) is characterized by complex trajectories of cerebral atrophy that are affected by interactions with age and apolipoprotein E allele ε4 (APOE4) status. In this article, we report the nonlinear volumetric changes in gray matter across the full biological spectrum of the disease, represented by the AD-cerebrospinal fluid (CSF) index. This index reflects the subject's level of pathology and position along the AD continuum. We also evaluated the associated impact of the APOE4 genotype. The atrophy pattern associated with the AD-CSF index was highly symmetrical and corresponded with the typical AD signature. Medial temporal structures showed different atrophy dynamics along the progression of the disease. The bilateral parahippocampal cortices and a parietotemporal region extending from the middle temporal to the supramarginal gyrus presented an initial increase in volume which later reverted. Similarly, a portion of the precuneus presented a rather linear inverse association with the AD-CSF index whereas some other clusters did not show significant atrophy until index values corresponded to positive CSF tau values. APOE4 carriers showed steeper hippocampal volume reductions with AD progression. Overall, the reported atrophy patterns are in close agreement with those mentioned in previous findings. However, the detected nonlinearities suggest that there may be different pathological processes taking place at specific moments during AD progression and reveal the impact of the APOE4 allele.
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Affiliation(s)
- J D Gispert
- Clinical and Neuroimaging Departments, Barcelonabeta Brain Research Center, Pasqual Maragall Foundation, Barcelona, Spain; Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Barcelona, Spain
| | - L Rami
- Alzheimer's Disease and Other Cognitive Disorders Unit, Neurology Service, Hospital Clínic, Barcelona, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | | | - C Falcon
- Clinical and Neuroimaging Departments, Barcelonabeta Brain Research Center, Pasqual Maragall Foundation, Barcelona, Spain; Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Barcelona, Spain
| | - A Tucholka
- Clinical and Neuroimaging Departments, Barcelonabeta Brain Research Center, Pasqual Maragall Foundation, Barcelona, Spain
| | - S Rojas
- Clinical and Neuroimaging Departments, Barcelonabeta Brain Research Center, Pasqual Maragall Foundation, Barcelona, Spain; Department of Morphological Sciences, Anatomy and Embriology Unit, Faculty of Medicine, Autonomous University of Barcelona
| | - J L Molinuevo
- Clinical and Neuroimaging Departments, Barcelonabeta Brain Research Center, Pasqual Maragall Foundation, Barcelona, Spain; Alzheimer's Disease and Other Cognitive Disorders Unit, Neurology Service, Hospital Clínic, Barcelona, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.
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Valdivia L, Rojas S, Saavedra A, Gallegos D, Cid M, Farías M, González M. Differential expression of CHOP and GADD34 in human fetal endothelium from gestational diabetes. Placenta 2015. [DOI: 10.1016/j.placenta.2015.01.497] [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: 10/23/2022]
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Rojas S, Avsar M, Hanke J, Deniz E, Meier A, Tümler K, Martens A, Cebotari S, Haverich A, Schmitto J. Minimally Invasive LVAD Surgery in Septuagenarians. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1544298] [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: 10/24/2022]
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Rojas S, Avsar M, Hanke J, Deniz E, Bara C, Martens A, Shrestha M, Cebotari S, Haverich A, Schmitto J. Less Invasive Left Ventricular Assist Device Implantation with Outflow-Graft Tunnelling through the Sinus Transversus. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1544266] [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: 10/24/2022]
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Loudet CI, Marchena MC, Maradeo R, Fernández S, Romero V, Valenzuela G, Ramírez M, Rojas S, Tumino LI, González AL, Reina R, Estenssoro E. IMPACT OF A MULTIFACETED INTERVENTION ON THE INCIDENCE OF PRESSURE ULCERS IN A MEDICAL−SURGICAL ICU. A BEFORE-AFTER STUDY. Intensive Care Med Exp 2015. [PMCID: PMC4798583 DOI: 10.1186/2197-425x-3-s1-a926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Rojas S, Quartapelle-Procopio E, Carmona FJ, Romero MA, Navarro JAR, Barea E. Biophysical characterisation, antitumor activity and MOF encapsulation of a half-sandwich ruthenium(ii) mitoxantronato system. J Mater Chem B 2014; 2:2473-2477. [DOI: 10.1039/c3tb21455a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hengevoß J, Rojas S, Piechotta M, Parr MK, Diel P. Endocrine fingerprint analyses as an alternative strategy to detect the abuse of anabolic steroids. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336742] [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: 10/27/2022]
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Bader A, Brodarac A, Hetzer R, Kurtz A, Stamm C, Baraki H, Kensah G, Asch S, Rojas S, Martens A, Gruh I, Haverich A, Kutschka I, Cortes-Dericks L, Froment L, Kocher G, Schmid RA, Delyagina E, Schade A, Scharfenberg D, Skorska A, Lux C, Li W, Steinhoff G, Drey F, Lepperhof V, Neef K, Fatima A, Wittwer T, Wahlers T, Saric T, Choi YH, Fehrenbach D, Lehner A, Herrmann F, Hollweck T, Pfeifer S, Wintermantel E, Kozlik-Feldmann R, Hagl C, Akra B, Gyongyosi M, Zimmermann M, Pavo N, Mildner M, Lichtenauer M, Maurer G, Ankersmit J, Hacker S, Mittermayr R, Mildner M, Haider T, Nickl S, Zimmermann M, Beer L, Lebherz-Eichinger D, Schweiger T, Mitterbauer A, Keibl C, Werba G, Frey M, Ankersmit HJ, Herrmann S, Lux CA, Steinhoff G, Holfeld J, Tepekoylu C, Wang FS, Kozaryn R, Schaden W, Grimm M, Wang CJ, Holfeld J, Tepekoylu C, Kozaryn R, Urbschat A, Zacharowski K, Grimm M, Paulus P, Avaca MJ, Kempf H, Malan D, Sasse P, Fleischmann B, Palecek J, Drager G, Kirschning A, Zweigerdt R, Martin U, Katsirntaki K, Haller R, Ulrich S, Sgodda M, Puppe V, Duerr J, Schmiedl A, Ochs M, Cantz T, Mall M, Martin U, Mauritz C, Kensah G, Lara AR, Dahlmann J, Zweigerdt R, Schwanke K, Hegermann J, Skvorc D, Gawol A, Azizian A, Wagner S, Krause A, Drager G, Ochs M, Haverich A, Gruh I, Martin U, Klopsch C, Gaebel R, Kaminski A, Chichkov B, Jockenhoevel S, Steinhoff G, Klose K, Roy R, Brodarac A, Kang KS, Bieback K, Nasseri B, Choi YH, Kurtz A, Stamm C, Lepperhof V, Polchynska O, Kruttwig K, Bruggemann C, Xu G, Drey F, Neef K, Saric T, Lichtenauer M, Werba G, Mildner M, Baumgartner A, Hasun M, Nickl S, Beer L, Mitterbauer A, Zimmermann M, Gyongyosi M, Podesser BK, Ankersmit HJ, Ludwig M, Tolk A, Skorska A, Noack T, Steinhoff G, Margaryan R, Assanta N, Menciassi A, Burchielli S, Matteucci M, Lionetti V, Luchi C, Cariati E, Coceani F, Murzi B, Martens A, Rojas SV, Kensah G, Rotarmel A, Baraki H, Haverich A, Martin U, Gruh I, Kutschka I, Nasseri BA, Klose K, Ebell W, Dandel M, Kukucka M, Gebker R, Choi YH, Hetzer R, Stamm C, Paulus P, Holfeld J, Urbschat A, Mutlak H, Ockelmann P, Tacke S, Zacharowski K, Scheller B, Pereszlenyi A, Rojas SV, Martens A, Baraki H, Schwanke K, Zweigerdt R, Martin U, Haverich A, Kutschka I, Rojas SV, Martens A, Meier M, Baraki H, Schecker N, Rathert C, Zweigerdt R, Martin U, Haverich A, Kutschka I, Roy R, Brodarac A, Kukucka M, Kurtz A, Becher PM, Choi YH, Drori-Carmi N, Bercovich N, Zahavi-Goldstein E, Jack M, Netzer N, Pinzur L, Chajut A, Tschope C, Stamm C, Ruch U, Kaminski A, Strauer BE, Tiedemann G, Steinhoff G, Schade A, Delyagina E, Scharfenberg D, Lux C, Steinhoff G, Schlegel F, Dhein S, Akhavuz O, Mohr FW, Dohmen PM, Schlegel F, Salameh A, Oelmann K, Kiefer P, Dhein S, Mohr FW, Dohmen PM, Schwanke K, Merkert S, Templin C, Jara-Avaca M, Muller S, Haverich A, Martin U, Zweigerdt R, Skorska A, von Haehling S, Ludwig M, Slavic S, Curato C, Altarche-Xifro W, Unger T, Steinhoff G, Li J, Zhang Y, Li WZ, Ou L, Lux CA, Ma N, Steinhoff G, Haase A, Alt R, Schwanke K, Martin U. 3rd EACTS Meeting on Cardiac and Pulmonary Regeneration Berlin-Brandenburgische Akademie, Berlin, Germany, 14-15 December 2012. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivs561] [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: 11/13/2022] Open
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Baraki H, Kensah G, Gruh I, Rojas S, Martens A, Haverich A, Kutschka I. Intramyocardial transplantation of bioartificial cardiac tissue splints for restauration of infarcted myocardium in rats. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297590] [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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Martens A, Kensah G, Rojas S, Rotärmel A, Baraki H, Haverich A, Martin U, Gruh I, Kutschka I. Induced pluripotent stem cell (iPSC)-derived cardiomyocytes engraft and improve heart function in a mouse model of acute myocardial infarction. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297673] [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: 10/14/2022]
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Pino F, Roé N, Orero A, Falcón C, Rojas S, Benlloch JM, Ros D, Pavía J. Development of a variable-radius pinhole SPECT system with a portable gamma camera. ACTA ACUST UNITED AC 2011; 30:286-91. [PMID: 21640439 DOI: 10.1016/j.remn.2011.03.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Accepted: 03/02/2011] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To develop a small-animal SPECT system using a low cost commercial portable gamma camera equipped with a pinhole collimator, a continuous scintillation crystal and a position-sensitive photomultiplier tube. MATERIAL AND METHODS The gamma camera was attached to a variable radius system, which enabled us to optimize sensitivity and resolution by adjusting the radius of rotation to the size of the object. To investigate the capability of the SPECT system for small animal imaging, the dependence of resolution and calibration parameters on radius was assessed and acquisitions of small phantoms and mice were carried out. RESULTS Resolution values, ranging from 1.0mm for a radius of 21.4mm and 1.4mm for a radius of 37.2mm were obtained, thereby justifying the interest of a variable radius SPECT system. CONCLUSIONS The image quality of phantoms and animals were satisfactory, thus confirming the usefulness of the system for small animal SPECT imaging.
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Affiliation(s)
- F Pino
- Unitat de Biofísica, Facultat de Medicina, Universitat de Barcelona, Spain.
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Hoekzema E, Herance R, Rojas S, Pareto D, Abad S, Jiménez X, Figueiras FP, Popota F, Ruiz A, Torrent È, Fernández-Soriano FJ, Rocha M, Rovira M, Víctor VM, Gispert JD. The effects of aging on dopaminergic neurotransmission: a microPET study of [11C]-raclopride binding in the aged rodent brain. Neuroscience 2010; 171:1283-6. [PMID: 20937365 DOI: 10.1016/j.neuroscience.2010.10.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2010] [Revised: 09/29/2010] [Accepted: 10/03/2010] [Indexed: 10/19/2022]
Abstract
Rodent models are frequently used in aging research to investigate biochemical age effects and aid in the development of therapies for pathological and non-pathological age-related degenerative processes. In order to validate the use of animal models in aging research and pave the way for longitudinal intervention-based animal studies, the consistency of cerebral aging processes across species needs to be evaluated. The dopaminergic system seems particularly susceptible to the aging process, and one of the most consistent findings in human brain aging research is a decline in striatal D2-like receptor (D2R) availability, quantifiable by positron emission tomography (PET) imaging. In this study, we aimed to assess whether similar age effects can be discerned in rat brains, using in vivo molecular imaging with the radioactive compound [(11)C]-raclopride. We observed a robust decline in striatal [(11)C]-raclopride uptake in the aged rats in comparison to the young control group, comprising a 41% decrement in striatal binding potential. In accordance with human studies, these results indicate that substantial reductions in D2R availability can be measured in the aged striatal complex. Our findings suggest that rat and human brains exhibit similar biochemical alterations with age in the striatal dopaminergic system, providing support for the pertinence of rodent models in aging research.
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Affiliation(s)
- E Hoekzema
- Department de Psiquiatria i Medicina Legal, Universitat Autônoma de Barcelona, 08192, Bellaterra, Barcelona, Spain
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28
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Martens A, Gruh I, Dimitroulis D, Rojas S, Schmidt-Richter I, Rathert C, Khaladj N, Martin U, Haverich A, Kutschka I. Rhesus monkey derived „cardiospheres“ (CSps) for cardiac regenerative therapy in a mouse infarct model. Thorac Cardiovasc Surg 2010. [DOI: 10.1055/s-0029-1246792] [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: 10/20/2022]
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29
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te Wildt B, Rojas S, Sachs S, Wedegärtner F, Szycik G. P02-158 - Emotional responses in excessive players of violent video games - an fMRI-study. Eur Psychiatry 2010. [DOI: 10.1016/s0924-9338(10)70772-0] [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] Open
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30
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Rangel PL, Rodríguez A, Rojas S, Sharp PJ, Gutierrez CG. Testosterone stimulates progesterone production and STAR, P450 cholesterol side-chain cleavage and LH receptor mRNAs expression in hen (Gallus domesticus) granulosa cells. Reproduction 2009; 138:961-9. [PMID: 19710202 DOI: 10.1530/rep-09-0071] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The chicken ovary is organized into a hierarchy of yellow yolky follicles that ovulate on successive days. Active or passive immunization of laying hens against testosterone blocks ovulation without affecting follicle development. Testosterone may play a role in pre-ovulatory follicle maturation by stimulating granulosa progesterone production. We assessed whether this stimulus is dose-related and depends on the maturity of the donor follicle, and if it does so by stimulating granulosa cell STAR, P450 cholesterol side-chain cleavage (P450scc), and LH receptor (LHCGR) mRNAs expression. Progesterone production by granulosa cells from F1, F3, and F4 follicles, cultured for 3 h without testosterone was greater in cells collected 11-14 h than 1-4 h after ovulation. These differences in progesterone production were less pronounced after granulosa cells had been cultured for 24 h. Culture of granulosa cells for 3 or 24 h with testosterone (1-100 ng/ml) stimulated progesterone production in cells collected from F4, F3, or F1 follicles 1-4, or 11-14 h after ovulation. Testosterone (0-4000 ng/ml) alone or in combination with LH (0-100 ng/ml) increased progesterone production by F1 granulosa cells, collected 1-4 and 11-14 h after ovulation and cultured for 3 h. Finally, testosterone (10 or 100 ng/ml) increased STAR, P450scc, and LHCGR mRNAs, when added to 3 h cultures of F1 granulosa cells. In conclusion, testosterone stimulates granulosa cell progesterone production in hen pre-ovulatory hierarchical follicles irrespective of maturational state, acting alone or additively with LH. We propose that testosterone promotes granulosa cell maturation to facilitate the pre-ovulatory release of LH.
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Affiliation(s)
- P L Rangel
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Avenida Universidad 3000, CP 04510 México D.F., Mexico and Royal (Dick) School of Veterinary Studies, The Roslin Institute, University of Edinburgh, Roslin, Midlothian EH25 9PS, UK
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de la Fuente J, Pérez-Alonso F, Martínez-Huerta M, Peña M, Fierro J, Rojas S. Identification of Ru phases in PtRu based electrocatalysts and relevance in the methanol electrooxidation reaction. Catal Today 2009. [DOI: 10.1016/j.cattod.2008.10.052] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [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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Maquivar M, Verduzco A, Galina CS, Pulido A, Rojas S, Forster K, Van der Laan G, Arnoni R. Relationship Among Follicular Growth, Oestrus, Time of Ovulation, Endogenous Estradiol 17β and Luteinizing Hormone in Bos Indicus Cows After a Synchronization Program. Reprod Domest Anim 2007; 42:571-6. [DOI: 10.1111/j.1439-0531.2006.00821.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Espinoza-Navarro O, Vilaxa A, Granifo L, Rojas S, Rodríguez H. Histological Study on the Male Reproductive Organs of Mouse CF1 Treated With Boron. INT J MORPHOL 2007. [DOI: 10.4067/s0717-95022007000200017] [Citation(s) in RCA: 4] [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: 11/17/2022]
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Kogan M, Rojas S, Gómez P, Suárez F, Muñoz JF, Alister C. Evaluation of six pesticides leaching indexes using field data of herbicide application in Casablanca Valley, Chile. Water Sci Technol 2007; 56:169-78. [PMID: 17849992 DOI: 10.2166/wst.2007.486] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
A field study was performed to evaluate the accuracy of six pesticide screening leaching indexes for herbicide movement. Adsorption, dissipation and soil movement were studied in a vineyard in a sandy loam soil during 2005 season. Simazine, diuron, pendimethalin, oxyfluorfen and flumioxazin were applied to bare soil at rates commonly used, and their soil concentrations throughout soil profile were determined at 0, 10, 20, 40 and 90 days after application (DAA). Herbicides were subjected to two pluviometric regimens, natural field condition and modified conditions (plus natural rainfall 180 mm). Leaching indexes utilized were: Briggs's Rf, Hamaker's Rf, LEACH, LPI, GUS and LIX. Simazine reached 120 cm, diuron 90 cm, flumioxazin 30 cm soil depth respectively. Pendimethalin and oxyfluorfen were retained up to 5 cm. None of the herbicides leaching was affected by rainfall regimen. Only flumioxazin field dissipation was clearly affected by pluviometric condition. The best representation of the herbicide soil depth movement and leaching below 15 cm soil depth were: Hamaker's Rf < Briggs's Rf < GUS < LPI, < LEACH < LIX. Field results showed a good correlation between herbicides K(d) and their soil depth movement and mass leached below 15 cm soil depth.
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Affiliation(s)
- M Kogan
- Center de Investigación Agrícola y Ambiental (CIAA) Universidad de Viña del Mar, Chile.
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Pérez-Alonso FJ, Granados ML, Ojeda M, Herranz T, Rojas S, Terreros P, Fierro JLG, Gracia M, Gancedo JR. Relevance in the Fischer−Tropsch Synthesis of the Formation of Fe−O−Ce Interactions on Iron−Cerium Mixed Oxide Systems. J Phys Chem B 2006; 110:23870-80. [PMID: 17125353 DOI: 10.1021/jp064575f] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of Fe-Ce mixed oxides (95 atom % Fe-5 atom % Ce) has been prepared by different methods: coprecipitation, impregnation, and physical mixture of Ce and Fe oxides. These solids have been tested in the Fischer-Tropsch synthesis. The characterization of the catalytic precursors was carried out by X-ray diffraction (XRD), Raman, Mössbauer, and X-ray photoelectron (XPS) spectroscopic techniques. When the preparation method ensures a microscopic contact between Fe and Ce cations in the solid, several types of Fe-Ce interactions are present in the calcined solids. The interactions take the shape of Fe-O-Ce bridges that can exist either in the hematite-like solid solution or in the interphase between the Fe oxide covered by microcrystals of Ce oxide. In the case of the hematite-like solid solution, Ce(IV) cations are dissolved in the alpha-Fe2O3 network. The promotion by Ce of the catalytic properties observed in the final catalysts can be directly related with the detection of these Fe-O-Ce bridges in the calcined solids. The Ce promotion results in a larger yield to hydrocarbons, a higher production of olefins, and a higher selectivity to medium and large chain hydrocarbons (larger than six carbon atoms). It is proposed that the Ce promotion is due to the presence of Fe0-Ce(III) ensembles in the final catalysts arising from the initial Fe-O-Ce bridges developed in the parent calcined samples.
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Affiliation(s)
- F J Pérez-Alonso
- Instituto de Catálisis y Petroleoquímica, (CSIC), Marie Curie 2, 28049 Madrid, Spain
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de la Fuente JG, Martínez-Huerta M, Rojas S, Terreros P, Fierro J, Peña M. Methanol electrooxidation on PtRu nanoparticles supported on functionalised carbon black. Catal Today 2006. [DOI: 10.1016/j.cattod.2006.05.083] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [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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Rodas C, Guzman M, Rojas S. Prevalence of Sensitization and Latex Allergy in Operating Room Workers of the Worker's Hospital, Santiago, Chile. J Allergy Clin Immunol 2006. [DOI: 10.1016/j.jaci.2005.12.315] [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: 11/26/2022]
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Arrieta E, Porras A, González-Padilla E, Murcia C, Rojas S, Perera-Marín G. Ovine serum and pituitary isoforms of luteinising hormone during the luteal phase. Reprod Fertil Dev 2006; 18:485-95. [PMID: 16737642 DOI: 10.1071/rd05094] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2005] [Accepted: 01/24/2006] [Indexed: 11/23/2022] Open
Abstract
The relative abundance of the different isoforms of pituitary and circulating luteinising hormone (LH) in ewes, at different times after the administration of gonadotrophin-releasing hormone (GnRH), during the luteal phase of the oestrous cycle was investigated. Sixteen ewes on Day 9 of their cycle were divided into four groups (n = 4). The control group (T0) received saline solution; the remaining animals received 100 μg GnRH (i.m.) 30, 90 or 180 min (T30, T90 and T180, respectively) before serum and pituitary gland collection. Luteinising hormone polymorphism was analysed by chromatofocusing (pH 10.5–3.5). The LH eluted from each chromatofocusing was grouped on the basis of the following three criteria: (1) according to the pH of elution (pH ≥ 10–3.5); (2) as either a basic (pH ≥ 7.5), neutral (pH 7.4–6.5) and acidic (pH ≤ 6.4) elution of LH of serum and hypophyseal origin; and (3) on the basis of distinct isoforms, of which 10 (A–J) were identifiable in hypophyseal extracts and four (A–D) were found in the serum. In general, the most abundant forms of LH in both the pituitary and serum, at all times, were basic. However, that proportion was greater in hypophyseal extracts (84 ± 3%, 81 ± 4%, 82 ± 3% and 83 ± 2% at T0, T30, T90 and T180, respectively) than in serum (51 ± 5%, 48 ± 10% and 54 ± 6% at T30, T90 and T180, respectively). Neutral and acidic LH made up a larger proportion of the total LH in sera (neutral: 17 ± 4%, 20 ± 6% and 23 ± 3% at T30, T90 and T180, respectively; acidic: 32 ± 8%, 32 ± 11% and 23 ± 6% at T30, T90 and T180, respectively) than in the pituitary extracts (neutral: 4.0 ± 0.7%, 10 ± 4%, 7 ± 2% and 5.0 ± 0.5% at T0, T30, T90 and T180, respectively; acidic: 12 ± 3%, 11 ± 2%, 12 ± 2% and 12 ± 2% at T0, T30, T90 and T180, respectively) at all times. These data reveal that the relative composition of the LH present in the pituitary gland and the LH secreted into the circulation is different, with more neutral and acidic isoforms being secreted. The pattern of circulating LH isoforms changes between 30 and 180 min after GnRH peak induction, with a greater proportion of isoform C (eluting between pH 7.0 and 6.5) at T180 compared with T30 and T90.
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Affiliation(s)
- E Arrieta
- Departamento de Reproducción, Facultad de Medicina Veterinaria y Zootecnia, UNAM, Cd. Universitaria, DF, CP 04510, México
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Pérez-Hernández R, Gómez-Cortés A, Arenas-Alatorre J, Rojas S, Mariscal R, Fierro J, Díaz G. SCR of NO by CH4 on Pt/ZrO2–TiO2 sol–gel catalysts. Catal Today 2005. [DOI: 10.1016/j.cattod.2005.07.080] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Perera-Marín G, Murcia C, Rojas S, Hernández-Cerón J, González-Padilla E. Pattern of circulating luteinizing hormone isoforms during the estrous and luteal phases in Holstein heifers. Anim Reprod Sci 2005; 86:53-69. [PMID: 15721659 DOI: 10.1016/j.anireprosci.2004.07.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2004] [Revised: 06/24/2004] [Accepted: 07/01/2004] [Indexed: 11/26/2022]
Abstract
The pattern of distribution of circulating luteinizing hormone (LH) isoforms in cattle during estrus and the luteal phase was investigated. In each stage, the stage of the estrous cycle was synchronized in seven Holstein heifers with a prostaglandin analogue. After estrus was detected, blood samples were taken at 2-h intervals for 24h. In the luteal phase, animals received 250 microg i.v. of GnRH and blood samples were collected every 15 min for 5h. LH concentration in the samples was determined. Samples with the greatest LH concentration in estrus (pre-ovulatory peak) and those collected 60 min after GnRH administration (luteal phase) were analyzed by chromatofocusing, eluted with a pH gradient from 10.5 to 3.5. Eluted LH was grouped into basic (pH > or = 7.5), neutral (pH 7.4-6.5) and acidic isoforms (pH < or = 6.4) as well as by pH unit. In both phases, basic forms were the most abundant, and these were greater (P < 0.05) during the luteal phase (78.4 +/- 4.2%) as compared with during estrus (57.1 +/- 6.2%); the proportion of neutral and acidic isoforms in estrus (13.7 +/- 2.6%; 28.5 +/- 2.8%) was greater (P < 0.05) as compared with the luteal phase (3.0 +/- 0.7; 18.7 +/- 3.4). These results indicate that the relative proportion of LH isoforms secreted by the adenohypophysis differ by stage of estrous cycle. The addition of excess of NaCl to the column modifies the antigen-antibody binding in the RIA, and the proteins eluted are erroneously quantified as LH; this is an artifact of the technique.
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Affiliation(s)
- G Perera-Marín
- Departamento de Reproducción, Facultad de Medicina Veterinaria y Zootecnia, UNAM, Ciudad Universitaria, DF, CP 04510, Mexico
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Ojeda M, Rojas S, García-García F, Granados ML, Terreros P, Fierro J. Inhibition of oxygenated compounds formation during CO hydrogenation over Rh/γ-Al2O3 catalysts calcined at high temperature. CATAL COMMUN 2004. [DOI: 10.1016/j.catcom.2004.09.003] [Citation(s) in RCA: 17] [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: 11/29/2022] Open
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Spivey JJ, Roberts GW, Rojas S, Eriksson S, Boutonnet M. Microemulsion: An alternative route to preparing supported catalysts. Catalysis 2004. [DOI: 10.1039/9781847553294-00258] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Ojeda M, López Granados M, Rojas S, Terreros P, Fierro J. Influence of residual chloride ions in the CO hydrogenation over Rh/SiO2 catalysts. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s1381-1169(03)00203-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [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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Rico G, Leandro E, Rojas S, Giménez JA, Kretschmer RR. The monocyte locomotion inhibitory factor produced by Entamoeba histolytica inhibits induced nitric oxide production in human leukocytes. Parasitol Res 2003; 90:264-7. [PMID: 12884017 DOI: 10.1007/s00436-002-0780-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2002] [Accepted: 10/15/2002] [Indexed: 12/31/2022]
Abstract
The monocyte locomotion inhibitory factor, an anti-inflammatory pentapeptide produced by Entamoeba histolytica, inhibits the in vitro production of nitric oxide induced by cytokines (INF-gamma, TNF-alpha) or PMA in human leukocytes. This can be added to the other previously reported functional effects of this factor, such as the inhibition of monocyte locomotion and the synthesis of reactive oxygen intermediates in both monocytes and neutrophils. The decreased nitric oxide production may interfere with the killing of amebas by neutrophils in the early invasive stages of amebiasis, when oxidative mechanisms are used [reactive oxygen and nitrogen intermediates either individually or synergistically via peroxynitrite (ONOO(-))], and in the advanced stages, when both non-oxidative and oxidative (including nitric oxide) mechanisms are employed by macrophages. Diminished nitric oxide production by leukocytes may also contribute to the paucity of late inflammatory components in amebic abscess of the liver and other amebic lesions.
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Affiliation(s)
- G Rico
- Unidad de Investigación Médica en Inmunología, Coordinación de Investigación Médica, Hospital de Pediatría, Centro Médico Nacional Siglo XXI, IMSS, Apdo. Postal A-047, Mexico City, D.F. 06703, Mexico
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Rojas S, Terreros P, Fierro J. Supported rhodium thiolate complexes as catalyst precursors for the hydroformylation of 1-heptene in organic media. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1381-1169(01)00524-6] [Citation(s) in RCA: 7] [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: 11/27/2022]
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Sánchez M, Höpfl H, Ochoa ME, Farfán N, Santillan R, Rojas S. Preparation of seven- and eight-membered boron heterocycles from different salen ligands and arylboronic acids. Inorg Chem 2001; 40:6405-12. [PMID: 11720494 DOI: 10.1021/ic010580g] [Citation(s) in RCA: 22] [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: 11/30/2022]
Abstract
Arylboronic acids and different salen ligands have been brought to reaction in a 2:1 stoichiometry in ethanol, toluene, and acetonitrile. In all cases bimetallic boronates with chiral boron atoms could be isolated with the difference that in ethanol mostly open bimetallic boronic esters are obtained, while in toluene or acetonitrile closed bimetallic complexes with a central seven- or eight-membered heterocyclic ring are formed. Both structural types have been characterized by spectroscopic techniques and X-ray crystallography showing that the reactions are diastereoselective in the case of the bimetallic heterocyclic structures. The configurations and conformations of the seven- and eight-membered rings are different, and this may depend on steric effects and/or repulsive intramolecular pi-pi interactions between the two salicylidene moieties attached to the central ring.
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Affiliation(s)
- M Sánchez
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62210 Cuernavaca, Morelos, México
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Soto R, Rubio I, Galina CS, Castillo E, Rojas S. Effect of pre- and post-partum feed supplementation on the productive and reproductive performance of grazing primiparous Brahman cows. Trop Anim Health Prod 2001; 33:253-64. [PMID: 11360803 DOI: 10.1023/a:1010370906515] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
This experiment studied the combined effect of pre- and post-calving feed supplementation on the productive and reproductive performance of primiparous Brahman cows. The animals were 4 years old (420 kg live weight) and pregnant, and grazed rotationally on Stargrass (Cynodon nlemfuensis) pastures. Supplementation was given before and after (T1, n = 15), only before (T2, n = 15) or only after (T3, n = 16) calving, and there was an unsupplemented control (T4, n = 16). The supplement (1.5 kg/animal per day, 13.4 MJ digestible energy/kg dry matter and 20% crude protein) was given for 45 days before and/or after calving. Changes in body weight and body condition score and the productive behaviour of the calves were similar (p > 0.05) among treatments. The concentration of urea in the plasma was low in the control group (T4) before and after calving. The animals in all the groups had a poor reproductive performance. The percentage of cows in oestrus was higher (p < 0.05) in T1 (73.3%) than in T3 (37.5%). The interval from calving to conception (148.7 +/- 53.7 days) and the pregnancy rate (48.5%) were similar (p > 0.05) among the treatments. The level of supplementation offered before and/or after calving did not improve the pregnancy rate.
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Affiliation(s)
- R Soto
- Colegio Superior Agropecuario del Estado de Guerrero, Iguala, México
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Abstract
We report a patient who developed multiple inflammatory muscle masses and generalized polymyositis in the setting of combined human immunodeficiency virus (HIV) and hepatitis C virus (HCV) infection. Magnetic resonance imaging (MRI) of muscles showed patchy edema which was particularly intense within the nodular masses. Polymerase chain reaction (PCR) showed no evidence of either virus within muscle. This report reviews earlier literature on muscle nodules associated with myositis and discusses the differential diagnosis of muscle masses in HIV infection.
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Affiliation(s)
- S J Richardson
- Department of Neurology, Stanford University School of Medicine, 3801 Miranda Avenue, Palo Alto, California 94304, USA.
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