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Kahan R, Gao Q, Zhang M, Abraham N, Gonzalez T, Song M, Carney J, Alderete I, Asokan A, Barbas A, Hartwig M. AAV9 PD-L1 Mediated Immunodulation of Donor Graft in Rat Lung Allotransplantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1680] [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: 04/05/2023] Open
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2
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Gonzalez-Melchor L, Garcia-Seara J, Martinez-Sande JL, Rodriguez-Manero M, Fernandez-Lopez XA, Alvarez Villamarin C, Gonzalez-Juanatey JR, Minguito-Carazo C, Gonzalez T. Utility of Soluble ST2 biomarker to predict recurrence after electrical cardioversion in patients with atrial fibrillation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Atrial fibrillation (AF) is the more frequent arrhythmia in clinical practice. The ST2S is a biomarker that has demonstrated to be predictor of cardiovascular outcomes in patients with heart failure but there is scarce information of his utility in patients with AF.
Purpose
Considering the characteristics of the ST2S we hypothesize this biomarker could correlate to recurrence in patients with AF and electrical cardioversion (ECV).
Methods
This was an observational and prospective clinical trial. We compared all patients with AF referred for ECV with a control group without AF, from September 1th 2016 to September 30 2019. Clinical, ECG, echocardiographic and ST2S levels were analyzed in both groups at basal, at 3 and 6 months of follow-up in such cases with AF. Patients with inflammatory or allergic diseases, moderate/severe ventricular dysfunction, structural cardiomyopathy, moderate/severe hepatic, renal or respiratory disease were excluded.
Results
We included a total of 94 patients with AF and 40 paired controls. Clinical variables are presented in Table 1. Fifty-eight (61.7%) patients with AF had recurrence at follow-up. There was a significant difference between the ST2S levels at baseline between AF patients (17163.8 pg/mL) and controls (11016.2 pg/mL) (p=0.001). ST2S biomarker levels at 3 and 6 months of follow-up decreased in those patients without AF recurrence as shown in Figure 1. Covariable models were performed and ST2S biomarker levels at 3 months were significant to predict recurrence at 6 months follow-up (Table 2). The calculated cut-point of the biomarker was of 15511.51 pg/ml with a c-value: 0.669.
Conclusions
In our experience ST2S was a useful biomarker to predict recurrence of AF after ECV. Considering the size of the study more studies should be performed to confirm this results.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- L Gonzalez-Melchor
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | - J Garcia-Seara
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | - J L Martinez-Sande
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | - M Rodriguez-Manero
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | - X A Fernandez-Lopez
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | | | - J R Gonzalez-Juanatey
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | - C Minguito-Carazo
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | - T Gonzalez
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
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3
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Gonzalez-Melchor L, Martinez-Sande JL, Garcia-Seara J, Rodriguez-Manero M, Fernandez-Lopez XA, Minguito-Carazo C, Gonzalez T, Gonzalez Juanatey JR. Conventional single-chamber pacemakers versus transcatheter pacing systems at long-term follow-up. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.714] [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
Background
Leadless pacemakers systems (LPM), have demonstrated safety and efficacy at mid-long term follow-up. There are still issues that cannot be completely avoided with conventional transvenous pacemaker (VVI) such as infectious or pocket related complications in which LPM are clearly superior.
Purpose
The aim of the study was to compare the clinical and device performance between LPM and VVI in a one-center long-term follow-up.
Methods
This was a prospective, observational, one-center study. We include all patients with a single chamber pacemaker implantation from June 1 2015 to March 1 2022 to complete a long-term follow-up. All clinical, electrical and echocardiographic characteristics, including electrical parameters, complications and mortality, were described.
Results
We included 245 patients with VVI pacemakers and 315 LPM. Mean age was 79.6±6.6 in LPM and 83.5±8.9 y/o in VVI pacemakers. All clinical, electrical and echocardiographic characteristics are described in Table 1. Electrical parameters of LPM were stable at long-term follow-up. There were a total of 7 complications in LPM and 17 in VVI pacemakers (p=0.006). There were no significant differences between major complications but there were in minor complications as shown in Table 2. There were no significant differences in mortality between both groups, but there was one death related to endocarditis in a VVI pacemaker patient during the follow-up (40,3±10 months).
Conclusions
In our study, there were no significant differences in terms of mortality and major complications between LMP and VVI at long-term follow-up. We consider our study supports the results in favor of the safety and effectiveness of LPM in the long-term.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- L Gonzalez-Melchor
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | - J L Martinez-Sande
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | - J Garcia-Seara
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | - M Rodriguez-Manero
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | - X A Fernandez-Lopez
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | - C Minguito-Carazo
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | - T Gonzalez
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
| | - J R Gonzalez Juanatey
- University Hospital of Santiago de Compostela, IDIS, CIBERCV, Cardiology , Santiago de Compostela , Spain
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4
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Walker ER, Gonzalez T, Howard L, Nguyen JK, Tucker SJ, Hayes R, Johnson C, Moore E, Druss BG. Qualitative Study of Certified Peer Specialists' Experiences Delivering Peer Support Services During the COVID-19 Pandemic. Psychiatr Serv 2022; 74:539-542. [PMID: 36128695 DOI: 10.1176/appi.ps.202100662] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The purpose of this qualitative study was to examine the experiences of certified peer specialists (CPSs) in delivering telehealth services during the COVID-19 pandemic. METHODS Fourteen semistructured interviews with CPSs were conducted from August to November 2020. Data were analyzed by using thematic analysis. RESULTS Helpful support from employers during the transition to telehealth included clear communication and access to training on telehealth technologies. Main barriers and facilitators were related to interpersonal relationships and logistical factors. CPSs reported that telehealth allowed them to continue to support the peers they serve but that the quality of interactions was not as good as with in-person services. Logistical challenges included inadequate equipment and Internet access. CONCLUSIONS To support CPSs in delivering telehealth, employers can engage them in open and transparent communication about guidelines for service delivery, provide training and equipment, and allow them the flexibility to tailor service delivery modalities to the peers they serve.
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Affiliation(s)
- Elizabeth Reisinger Walker
- Department of Behavioral, Social, and Health Education Sciences (Walker, Howard), Hubert Department of Global Health (Gonzalez), and Department of Health Policy and Management (Nguyen, Moore, Druss), Rollins School of Public Health, Emory University, Atlanta; Georgia Mental Health Consumer Network, Tucker, Georgia (Tucker, Hayes, Johnson)
| | - Tatiana Gonzalez
- Department of Behavioral, Social, and Health Education Sciences (Walker, Howard), Hubert Department of Global Health (Gonzalez), and Department of Health Policy and Management (Nguyen, Moore, Druss), Rollins School of Public Health, Emory University, Atlanta; Georgia Mental Health Consumer Network, Tucker, Georgia (Tucker, Hayes, Johnson)
| | - Leah Howard
- Department of Behavioral, Social, and Health Education Sciences (Walker, Howard), Hubert Department of Global Health (Gonzalez), and Department of Health Policy and Management (Nguyen, Moore, Druss), Rollins School of Public Health, Emory University, Atlanta; Georgia Mental Health Consumer Network, Tucker, Georgia (Tucker, Hayes, Johnson)
| | - Julie K Nguyen
- Department of Behavioral, Social, and Health Education Sciences (Walker, Howard), Hubert Department of Global Health (Gonzalez), and Department of Health Policy and Management (Nguyen, Moore, Druss), Rollins School of Public Health, Emory University, Atlanta; Georgia Mental Health Consumer Network, Tucker, Georgia (Tucker, Hayes, Johnson)
| | - Sharon Jenkins Tucker
- Department of Behavioral, Social, and Health Education Sciences (Walker, Howard), Hubert Department of Global Health (Gonzalez), and Department of Health Policy and Management (Nguyen, Moore, Druss), Rollins School of Public Health, Emory University, Atlanta; Georgia Mental Health Consumer Network, Tucker, Georgia (Tucker, Hayes, Johnson)
| | - Roslind Hayes
- Department of Behavioral, Social, and Health Education Sciences (Walker, Howard), Hubert Department of Global Health (Gonzalez), and Department of Health Policy and Management (Nguyen, Moore, Druss), Rollins School of Public Health, Emory University, Atlanta; Georgia Mental Health Consumer Network, Tucker, Georgia (Tucker, Hayes, Johnson)
| | - Chris Johnson
- Department of Behavioral, Social, and Health Education Sciences (Walker, Howard), Hubert Department of Global Health (Gonzalez), and Department of Health Policy and Management (Nguyen, Moore, Druss), Rollins School of Public Health, Emory University, Atlanta; Georgia Mental Health Consumer Network, Tucker, Georgia (Tucker, Hayes, Johnson)
| | - Emily Moore
- Department of Behavioral, Social, and Health Education Sciences (Walker, Howard), Hubert Department of Global Health (Gonzalez), and Department of Health Policy and Management (Nguyen, Moore, Druss), Rollins School of Public Health, Emory University, Atlanta; Georgia Mental Health Consumer Network, Tucker, Georgia (Tucker, Hayes, Johnson)
| | - Benjamin G Druss
- Department of Behavioral, Social, and Health Education Sciences (Walker, Howard), Hubert Department of Global Health (Gonzalez), and Department of Health Policy and Management (Nguyen, Moore, Druss), Rollins School of Public Health, Emory University, Atlanta; Georgia Mental Health Consumer Network, Tucker, Georgia (Tucker, Hayes, Johnson)
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5
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Domowicz MS, Chan WC, Claudio-Vázquez P, Gonzalez T, Schwartz NB. Brain transcriptome analysis of a CLN2 mouse model as a function of disease progression. J Neuroinflammation 2021; 18:262. [PMID: 34749772 PMCID: PMC8576919 DOI: 10.1186/s12974-021-02302-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 10/20/2021] [Indexed: 12/13/2022] Open
Abstract
Background Neuronal ceroid lipofuscinoses, (NCLs or Batten disease) are a group of inherited, early onset, fatal neurodegenerative diseases associated with mutations in 13 genes. All forms of the disease are characterized by lysosomal accumulation of fluorescent storage material, as well as profound neurodegeneration, but the relationship of the various genes’ function to a single biological process is not obvious. In this study, we used a well-characterized mouse model of classical late infantile NCL (cLINCL) in which the tripeptidyl peptidase 1 (Tpp1) gene is disrupted by gene targeting, resulting in loss of detectable TPP1 activity and leading to progressive neurological phenotypes including ataxia, increased motor deficiency, and early death. Methods In order to identify genes and pathways that may contribute to progression of the neurodegenerative process, we analyzed forebrain/midbrain and cerebellar transcriptional differences at 1, 2, 3 and 4 months of age in control and TPP1-deficient mice by global RNA-sequencing. Results Progressive neurodegenerative inflammatory responses involving microglia, astrocytes and endothelial cells were observed, accompanied by activation of leukocyte extravasation signals and upregulation of nitric oxide production and reactive oxygen species. Several astrocytic (i.e., Gfap, C4b, Osmr, Serpina3n) and microglial (i.e., Ctss, Itgb2, Itgax, Lyz2) genes were identified as strong markers for assessing disease progression as they showed increased levels of expression in vivo over time. Furthermore, transient increased expression of choroid plexus genes was observed at 2 months in the lateral and fourth ventricle, highlighting an early role for the choroid plexus and cerebrospinal fluid in the disease pathology. Based on these gene expression changes, we concluded that neuroinflammation starts, for the most part, after 2 months in the Tpp1−/− brain and that activation of microglia and astrocytes occur more rapidly in cerebellum than in the rest of the brain; confirming increased severity of inflammation in this region. Conclusions These findings have led to a better understanding of cLINCL pathological onset and progression, which may aid in development of future therapeutic treatments for this disease. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-021-02302-z.
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Affiliation(s)
- Miriam S Domowicz
- Department of Pediatrics, Biological Sciences Division, The University of Chicago Medical Center, 5841 S. Maryland Avenue, MC 5058, Chicago, IL, 60637, USA.
| | - Wen-Ching Chan
- Center for Research Informatics, Biological Sciences Division, The University of Chicago, Chicago, IL, 60637, USA
| | - Patricia Claudio-Vázquez
- Department of Pediatrics, Biological Sciences Division, The University of Chicago Medical Center, 5841 S. Maryland Avenue, MC 5058, Chicago, IL, 60637, USA
| | - Tatiana Gonzalez
- Department of Pediatrics, Biological Sciences Division, The University of Chicago Medical Center, 5841 S. Maryland Avenue, MC 5058, Chicago, IL, 60637, USA
| | - Nancy B Schwartz
- Department of Pediatrics, Biological Sciences Division, The University of Chicago Medical Center, 5841 S. Maryland Avenue, MC 5058, Chicago, IL, 60637, USA.,Department of Biochemistry and Molecular Biology, Biological Sciences Division, The University of Chicago, Chicago, IL, 60637, USA
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6
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Vieitez Florez J, Monteagudo J, Mahia P, Marco I, Gonzalez T, Sitges M, Bouzas A, Gonzalez V, Alonso D, Carrasco F, Adeba A, Hinojar R, Fernandez-Golfin C, Zamorano J. Is Isolated tricuspid regurgitation different from functional tricuspid regurgitation? Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2011] [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
Isolated tricuspid regurgitation (TR) prevalence is increasing in the last decades. Its presence is associated with a worse prognosis when EROA is >40 mm2. Because of high surgery risk and increasing incidence, isolated TR is a challenge in modern cardiology.
Purpose
To evaluate the prevalence and characteristics of isolated TR compared to other TR aetiologies in a large cohort of patients.
Methods
Prospective study where consecutive patients undergoing an echocardiographic study within a three-month period were included. All studies with at least moderate TR were selected. Isolated TR was defined as TR with no likely pulmonary hypertension (>50 mmHg), no overt TR cause (no intrinsic tricuspid disease, LVEF ≥50%, no pacemaker/defibrillator wire across the tricuspid, no other significant valve disease, no disease that may cause TR, no congenital or pericardial heart disease); and no previous valve surgery. Patients with isolated TR and other aetiologies were compared.
Results
2121 patients with at least moderate TR were included. Isolated TR was found in 398 patients (18.8%). Basal characteristics are shown in table 1. Patients with isolated TR did not have a higher prevalence of AF (47.5% vs. 48.6% p=0.362). Isolated TR was less severe (20.5% vs. 32.1% of patients with severe TR; p<0.001) and less symptomatic (NYHA ≥ II in 27.8% of patients vs. 69.3%; p<0.001).
After selecting patients with at least severe TR, patients with isolated TR were also less symptomatic (NYHA≥II in 47.8% of patients vs. 70.7%; p<0.001) and they had better RV function (TAPSE <17 mm in 13.4% vs. 35.6%; p=0.001).
We found that patients with isolated severe TR had a larger tricuspid annulus diameter (25.4±0.8 mm/m2 vs. 24.0±0.3 mm/m2; p=0.047).
Conclusions
In this large prospective study, isolated TR is present in 18.8% of significant TR. Isolated TR was less severe, was associated with less RV dilatation (but with larger tricuspid annulus diameter) and patients had a better functional class compared to other TR aetiologies.
Differeces in NYHA and RV function
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - J.M Monteagudo
- University Hospital Ramon y Cajal de Madrid, Cardiology, Madrid, Spain
| | - P Mahia
- Hospital Clinico San Carlos, Madrid, Spain
| | - I Marco
- University Hospital La Paz, Madrid, Spain
| | - T Gonzalez
- University Hospital Vall d'Hebron, Barcelona, Spain
| | - M Sitges
- Hospital Clinic de Barcelona, Barcelona, Spain
| | - A Bouzas
- University Hospital A Coruna, A Coruna, Spain
| | - V Gonzalez
- Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - D Alonso
- Hospital of Leon (Complejo Asistencial Universitario de Leon), Leon, Spain
| | - F Carrasco
- University Hospital Virgen de la Victoria, Malaga, Spain
| | - A Adeba
- University Hospital Central de Asturias, Oviedo, Spain
| | - R Hinojar
- University Hospital Ramon y Cajal de Madrid, Cardiology, Madrid, Spain
| | | | - J.L Zamorano
- University Hospital Ramon y Cajal de Madrid, Cardiology, Madrid, Spain
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7
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Gonzalez T, de la Rubia MA, Hincz KP, Comas-Lopez M, Subirats L, Fort S, Sacha GM. Influence of COVID-19 confinement on students' performance in higher education. PLoS One 2020; 15:e0239490. [PMID: 33035228 PMCID: PMC7546684 DOI: 10.1371/journal.pone.0239490] [Citation(s) in RCA: 176] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 08/30/2020] [Indexed: 11/18/2022] Open
Abstract
This study analyzes the effects of COVID-19 confinement on the autonomous learning performance of students in higher education. Using a field experiment with 458 students from three different subjects at Universidad Autónoma de Madrid (Spain), we study the differences in assessments by dividing students into two groups. The first group (control) corresponds to academic years 2017/2018 and 2018/2019. The second group (experimental) corresponds to students from 2019/2020, which is the group of students that had their face-to-face activities interrupted because of the confinement. The results show that there is a significant positive effect of the COVID-19 confinement on students’ performance. This effect is also significant in activities that did not change their format when performed after the confinement. We find that this effect is significant both in subjects that increased the number of assessment activities and subjects that did not change the student workload. Additionally, an analysis of students’ learning strategies before confinement shows that students did not study on a continuous basis. Based on these results, we conclude that COVID-19 confinement changed students’ learning strategies to a more continuous habit, improving their efficiency. For these reasons, better scores in students’ assessment are expected due to COVID-19 confinement that can be explained by an improvement in their learning performance.
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Affiliation(s)
- T. Gonzalez
- Biochemistry Department, Faculty of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
| | - M. A. de la Rubia
- Chemical Engineering Department, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain
| | - K. P. Hincz
- Escuela Politécnica Superior, Universidad Autónoma de Madrid, Madrid, Spain
| | - M. Comas-Lopez
- Escuela Politécnica Superior, Universidad Autónoma de Madrid, Madrid, Spain
| | - Laia Subirats
- Eurecat, Centre Tecnològic de Catalunya, Barcelona, Spain
- ADaS Lab, Universitat Oberta de Catalunya, Barcelona, Spain
| | - Santi Fort
- Eurecat, Centre Tecnològic de Catalunya, Barcelona, Spain
| | - G. M. Sacha
- Escuela Politécnica Superior, Universidad Autónoma de Madrid, Madrid, Spain
- * E-mail:
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8
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Vieitez Florez JM, Monteagudo JM, Mahia P, Perez L, Lopez T, Marco I, Perone F, Gonzalez T, Sitges M, Bouzas A, Gonzalez V, Li P, Alonso D, Fernandez-Golfin C, Zamorano JL. 39 Overview of tricuspid regurgitation (tr). new classification of tr. when severe tr is too severe? Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.001] [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
Tricuspid regurgitation (TR) importance is growing in the last years. Its presence is associated with a worse prognosis. A new severity classification has been published, adding massive and torrential to the classical TR classification. However, it is not know how many of the patients classified as severe TR, corresponds to the new Torrential or massive classification that for sure will lead to different treatment strategies. Also few published studies have addressed the aetiologies, mechanisms and severity in large cohorts.
Purpose
To evaluate the burden of TR in a large cohort of patients referred for an echocardiography.
Methods
Prospective study where consecutive patients undergoing an echocardiographic study in 10 Spanish hospitals within a three-month period were included. All studies with at least moderate TR were selected for analysis. The evaluation was conduced according to the usual practice of the laboratory. TR assessment was performed as recommended by the European Association of Cardiovascular Imaging. TR was quantified according to Hanh & Zamorano new published classification.
Results
A total of 35088 consecutive echocardiographic studies were performed in the participant hospitals during the recruitment period. TR of at least moderate degree was detected in 2124 studies (6,05%). Mean age was 77,1 years and 62.8% were women.
Mitral or aortic valvulopthy was the most common cause, present in almost half of cases (48.4%). The second cause of TR was idiopathic with 22.2% of cases. Primary TR was found in 7.2% of patients, the most frequent aetiology in these group was cardiac implantable devices with 4.2% of total of TR. Aetiology and severity according to the new classification can be seen in the figures
Atrial fibrillation was present in 47.6% of cases. 56.4% of patients had symptoms at the time of the study (NYHA≥2 at the time of study).
Right ventricle (RV) was dilated (telediastolic basal diameter >42mm) in 39.4% of patients). RV function was impared (TAPSE <17mm) in 30.6% of patients.
Conclusions
In these larger multicentre study, significant TR may is present in up to 6% of the echocardiographic studies and is often symptomatic[m1] . 4,91% of patients had a massive or torrential grade. Most TR are secondary to mitral or aortic valvulopathy. Idiopathic TR has taken the second place.
Abstract 39 Figure. Severity and aetiology of TR
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Affiliation(s)
| | - J M Monteagudo
- University Hospital Ramon y Cajal de Madrid, Cardiology, Madrid, Spain
| | - P Mahia
- Hospital Clinic San Carlos, Madrid, Spain
| | - L Perez
- Hospital Clinic San Carlos, Madrid, Spain
| | - T Lopez
- University Hospital La Paz, Madrid, Spain
| | - I Marco
- University Hospital La Paz, Madrid, Spain
| | - F Perone
- University Hospital La Paz, Madrid, Spain
| | - T Gonzalez
- Hospital Clinic de Barcelona, Barcelona, Spain
| | - M Sitges
- Hospital Clinic de Barcelona, Barcelona, Spain
| | - A Bouzas
- University Hospital Complex A Coru??a, A Coruna, Spain
| | - V Gonzalez
- Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - P Li
- Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | | | | | - J L Zamorano
- University Hospital Ramon y Cajal de Madrid, Cardiology, Madrid, Spain
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9
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Malagón C, Gomez MDP, Mosquera C, Vargas C, Gonzalez T, Arango C, Martin L, Perez P, Amaya-Uribe L, Molano-Gonzalez N, Anaya JM. Juvenile polyautoimmunity in a rheumatology setting. Autoimmun Rev 2019; 18:369-381. [DOI: 10.1016/j.autrev.2018.11.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 11/10/2018] [Indexed: 02/06/2023]
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10
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Gonzalez T, Malagon C, Guarnizo P, Mosquera AC, Chila-Moreno L, Romero-Sanchez C. Autoantibodies and Gastrointestinal Symptoms in Colombian Children with Juvenile Idiopathic Arthritis. Curr Rheumatol Rev 2018; 14:163-171. [PMID: 29308742 DOI: 10.2174/1573397114666180108110429] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 07/06/2017] [Revised: 08/25/2017] [Accepted: 12/15/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND Juvenile Idiopathic Arthritis (JIA) is the most common inflammatory joint disease in children. JIA and autoimmune inflammatory Gastrointestinal (GI) diseases share common etiologic mechanisms, including genetic predisposition and environmental influences. OBJECTIVE To Investigate association between gastrointestinal, rheumatologic clinical variables and the presence of autoantibodies in patients with JIA in treatment. METHODOLOGY In a cross-sectional study of patients with JIA according to diagnostic criteria and the ILAR classification. GI symptoms and autoantibody expression were evaluated with respect to their association with JIA clinical variables. Anti-Saccharomyces Cerevisiae IgG/IgA (ASCA), 6 antigen associated with anti polymorphonuclear neutrophil (ANCA), anti Transglutaminase (tTG) IgG/IgA, anti deaminated gliadin peptide (DGP) IgG/IgA autoantibodies, ANAS and IgA were measured in all patients. The association between clinical variables and auto-antibodies were evaluated using the Fisher test with significant value of p <0.05. The study was approved by the ethics committee of the all institutions. RESULTS Samples were collected from ninety-seven patients, 63% of whom were female. The average age was 14 years. The JIA subtype associated with the most common GI symptoms was enthesitis- related arthritis. Of these patients, 44.3% and 14% reported abdominal pain and diarrhea, respectively. Anti-DPG and anti-tTG antibodies were found in 9.28% and 7.22%, respectively and 11.34% were positive for p-ANCA, and 2% were positive for ASCA. CONCLUSION GI symptoms and autoantibodies associated with inflammation of the GI mucosa were detected in JIA patients but were not associated with autoantibodies or clinical variables. However, it is the monitoring of these patients diagnosis is important.
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Affiliation(s)
- Tatiana Gonzalez
- Postgraduate Pediatric Rheumatology, School of Medicine, Universidad El Bosque, Bogota, Colombia
| | - Clara Malagon
- Postgraduate Pediatric Rheumatology, School of Medicine, Universidad El Bosque, Bogota, Colombia.,Pediatric Rheumatology Department, Hospital Militar Central, Bogota, Colombia.,Pediatric Rheumatology Department, Hospital Simon Bolivar, Bogota, Colombia.,Reumaped IPS, Bogota, Colombia
| | - Pilar Guarnizo
- Postgraduate Pediatric Rheumatology, School of Medicine, Universidad El Bosque, Bogota, Colombia.,Pediatric Rheumatology Department, Fundación Cardioinfantil, Bogota, Colombia
| | - Angela C Mosquera
- Postgraduate Pediatric Rheumatology, School of Medicine, Universidad El Bosque, Bogota, Colombia.,Pediatric Rheumatology Department, Clínica Infantil - Colsubsidio, Bogota, Colombia
| | - Lorena Chila-Moreno
- UIBO Institute-Oral Basic Research Unit, Universidad El Bosque, Bogota, Colombia
| | - Consuelo Romero-Sanchez
- Postgraduate Pediatric Rheumatology, School of Medicine, Universidad El Bosque, Bogota, Colombia.,Rheumatology and Immunology Department, Hospital Militar Central, Bogota, Colombia.,UIBO Institute-Oral Basic Research Unit, Universidad El Bosque, Bogota, Colombia
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Lomakina O, Alekseeva E, Valieva S, Bzarova T, Nikishina I, Zholobova E, Rodionovskaya S, Kaleda M, Nakagishi Y, Shimizu M, Mizuta M, Yachie A, Sugita Y, Okamoto N, Shabana K, Murata T, Tamai H, Smith EM, Yin P, Jorgensen AL, Beresford MW, Smith EM, Eleuteri A, Goilav B, Lewandowski L, Phuti A, Wahezi D, Rubinstein T, Jones C, Newland P, Marks S, Corkhill R, Ekdawy D, Pilkington C, Tullus K, Putterman C, Scott C, Fisher AC, Beresford MW, Smith EM, Lewandowski L, Phuti A, Jorgensen A, Scott C, Beresford MW, Batu ED, Kosukcu C, Taskiran E, Akman S, Ozturk K, Sozeri B, Unsal E, Ekinci Z, Bilginer Y, Alikasifoglu M, Ozen S, Lythgoe H, Beresford MW, Brunner HI, Gulati G, Jones JT, Altaye M, Eaton J, Difrancesco M, Yeo JG, Leong J, Bathi LDT, Arkachaisri T, Albani S, Abdelrahman N, Beresford MW, Leone V, Groot N, Shaikhani D, Bultink IEM, Bijl M, Dolhain RJEM, Teng YKO, Zirkzee E, de Leeuw K, Fritsch-Stork R, Kamphuis SSM, Wright RD, Smith EM, Beresford MW, Abdawani R, Al Shaqshi L, Al Zakwani I, Gormezano NW, Kern D, Pereira OL, Esteves GCC, Sallum AM, Aikawa NE, Pereira RM, Silva CA, Bonfa E, Beckmann J, Bartholomä N, Foeldvari I, Bohnsack J, Milojevic D, Rabinovich C, Kingsbury D, Marzan K, Quartier P, Minden K, Chalom E, Horneff G, Venhoff N, Kuester RM, Dare J, Heinrich M, Kupper H, Kalabic J, Martini A, Brunner HI, Consolaro A, Horneff G, Burgos-Vargas R, Henneke P, Constantin T, Foeldvari I, Vojinovic J, Dehoorne J, Panaviene V, Susic G, Stanevica V, Kobusinska K, Zuber Z, Mouy R, Salzer U, Rumba-Rozenfelde I, Dolezalova P, Job-Deslandre C, Wulffraat N, Pederson R, Bukowski J, Hinnershitz T, Vlahos B, Martini A, Ruperto N, Janda A, Keskitalo P, Kangas S, Vähäsalo P, Valencia RAC, Martino D, Munro J, Ponsonby AL, Chiaroni-Clarke R, Meyer B, Allen RC, Boteanu AL, Akikusa JD, Craig JM, Saffrey R, Ellis JA, Davì S, Minoia F, Horne A, Wulffraat N, Wouters C, Wallace C, Corral SG, Uziel Y, Sterba G, Schneider R, Russo R, Ramanan AV, Schmid JP, Ozen S, Nichols KE, Miettunen P, Lovell DJ, Giraldo AS, Lehmberg K, Kitoh T, Khubchandani R, Ilowite NT, Henter JI, Grom AA, De Benedetti F, Behrens EM, Avcin T, Aricò M, Gámir MG, Martini A, Ruperto N, Cron RQ, Ravelli A, Grevich S, Lee P, Ringold S, Leroux B, Leahey H, Yuasa M, Mendoza AZ, Foster J, Sokolove J, Lahey L, Robinson W, Newson J, Stevens A, Shoop SJW, Hyrich KL, Verstappen SMM, Thomson W, Adrovic A, McDonagh JE, Beukelman T, Kimura Y, Natter M, Ilowite N, Mieszkalski K, Burrell G, Best B, Bristow H, Carr S, Dedeoglu R, Dennos A, Kaufmann R, Schanberg L, Parissenti I, Insalaco A, Taddio A, Mauro A, Pardeo M, Ricci F, Simonini G, Sahin S, Cattalini M, Montesano P, Parissenti I, Ricci F, Bonafini B, Medeghini V, Lancini F, Cattalini M, Gerbaux M, Lê PQ, Barut K, Goffin L, Badot V, La C, Caspers L, Willermain F, Ferster A, Ceci M, Licciardi F, Turco M, Santarelli F, Koka A, Montin D, Toppino C, Maggio MC, Alizzi C, Papia B, Vergara B, Corpora U, Messina L, Corsello G, Tsinti M, Oztunc F, Dermentzoglou V, Tziavas P, Tsitsami E, Perica M, Vidović M, Lamot L, Harjaček M, Bukovac LT, Çakan M, Ayaz NA, Kasapcopur O, Keskindemirci G, Miettunen P, Lang M, Laing C, Benseler S, Gerschman T, Luca N, Schmeling H, Dropol A, Taiani J, Rodriguez-Lozano AL, Johnson N, Rusted B, Nalbanti P, Trachana M, Pratsidou P, Pardalos G, Tzimouli V, Taparkou A, Stavrakidou M, Papachristou F, Rivas-Larrauri F, Kanakoudi-Tsakalidou F, Bale P, Robinson E, Palman J, Pilkington C, Ralph E, Gilmour K, Heard C, Wedderburn LR, Carlomagno R, de la Puente SG, Barrense-Dias Y, Gregory A, Amira D, Paolo S, Sylviane H, Michaël H, Panko N, Shokry S, Rakovska L, Pino S, Alves AGF, Diaz-Maldonado A, Guarnizo P, Torreggiani S, Cressoni P, Garagiola U, Di Landro G, Farronato G, Corona F, Filocamo G, Shenoi S, Giacomin MFDA, Bell S, Bhatti P, Nelson L, Mueller BA, Simon TA, Baheti A, Ray N, Guo Z, Ruperto N, Brunner HI, Farhat J, Hazra A, Stock T, Wang R, Mebus C, Alvey C, Lamba M, Krishnaswami S, Conte U, Wang M, Tzaribachev N, Braga ALF, Foeldvari I, Horneff G, Kingsbury D, Koskova E, Smolewska E, Vehe RK, Zuber Z, Martini A, Lovell D, Kubota T, Sallum AME, Shimizu M, Yasumura J, Nakagishi Y, Kizawa T, Yashiro M, Wakiguchi H, Yamatou T, Yamasaki Y, Takei S, Kawano Y, Campos LMDA, Nykvist UJ, Magnusson B, Wicksell R, Palmblad K, Olsson GL, Ziaee V, Modaressi M, Moradinejad MH, Seraya V, Zholobova E, Pereira LAA, Vitebskaya A, Moshe V, Amarilyo G, Harel L, Hashkes PJ, Mendelson A, Rabinowicz N, Reis Y, Uziel Y, Dāvidsone Z, Lichtenfels AJDFC, Lazareva A, Šantere R, Bērziņa D, Staņēviča V, Varnier GC, Consolaro A, Pilkington C, Maillard S, Ferrari C, Zaffarano S, Silva CA, Martini A, Ravelli A, Wienke J, Enders FB, van den Hoogen LL, Mertens JS, Radstake TR, Hotten HG, Fritsch R, de Jager W, Farhat SCL, Wedderburn L, Nistala K, Pilkington C, Prakken B, van Royen-Kerkhof A, van Wijk F, Alhemairi M, Muzaffer M, Van Dijkhuizen P, Deakin CT, Acar B, Simou S, Wedderburn LR, De Iorio M, Wu Q, Amin T, Simou S, Dossetter L, Wedderburn LR, Pilkington C, Campanilho-Marques R, Ozcakar ZB, Deakin C, Simou S, Wedderburn LR, Pilkington CA, Rosina S, Consolaro A, van Dijkhuizen P, Nistala K, Ruperto N, Pilkington C, Çakar N, Ravelli A, Soponkanaporn S, Simou S, Deakin CT, Wedderburn LR, Arıcı ZS, Tuğcu GD, Batu ED, Sönmez HE, Doğru-Ersöz D, Uncu N, Bilginer Y, Talim B, Kiper N, Özen S, Solyom A, Hügle B, Makay B, Magnusson B, Batu E, Mitchell J, Gür G, Kariminejad A, Hadipour F, Hadipour Z, Torcoletti M, Agostoni C, Di Rocco M, Tanpaiboon P, Superti-Furga A, Bonafé L, Arslan N, Özdel S, Guelbert N, Kostik M, Ehlert K, Grigelioniene G, Puri R, Ozen S, Schuchman E, Malagon C, Gomez P, Mosquera AC, Yalçınkaya F, Gonzalez T, Yepez R, Vargas C, Fernanda F, Lepri G, Ferrari A, Rigante D, Matucci-Cerinic M, Meini A, Moneta GM, Scott C, Caiello I, Marasco E, Nicolai R, Pardeo M, Bracaglia C, Insalaco A, Bracci-Laudiero L, De Benedetti F, Kopchak O, Kostik M, Brice N, Mushkin A, Maletin A, Makay B, Batu ED, Hügle B, Arslan N, Solyom A, Mitchell J, Schuchman E, Ozen S, Nourse P, Magnusson B, Malagon C, Gomez P, Mosquera C, Gonzalez T, Yepez R, Vargas C, Amorim RA, Len CA, Molina J, Lewandowski L, Moreira G, Santos FH, Fraga M, Keppeke L, Silva VM, Hirotsu C, Tufik S, Terreri MT, Braga VL, Fonseca MB, Arango C, Len CA, Fraga M, Schinzel V, Terreri MTR, Molina J, Len CA, Jorge L, Guerra L, Santos FH, Terreri MT, Mosquera AC, Junior EA, Fonseca MB, Braga VL, Len CA, Fraga M, Schinzel V, Terreri MTR, Alizzi C, Maggio MC, Castiglione MC, Malagon C, Tricarico A, Corsello G, Boulter E, Schultz A, Murray K, Falcini F, Lepri G, Stagi S, Bellucci E, Matucci-Cerinic M, Sakamoto AP, Grein IHR, Groot N, Pileggi G, Pinto NBF, de Oliveira AL, Wulffraat N, Chyzheuskaya I, Belyaeva L, Filonovich R, Khrustaleva H, Silva CA, Zajtseva L, Ilisson J, Pruunsild C, Kostik M, Kopchak O, Mushkin A, Maletin A, Gilliaux O, Corazza F, Lelubre C, Silva MFCD, Ferster A, Suárez RG, Morel Z, Espada G, Malagon C, C CSM, Lira L, Ladino M, Eraso R, Arroyo I, Lopes AS, Sztajnbok F, Silva C, Rose C, Russo GCS, Sallum AEM, Kozu K, Bonfá E, Saad-Magalhães C, Pereira RMR, Len CA, Terreri MT, Suri D, Didel S, Rawat A, Singh S, Maritsi D, Onoufriou MA, Vougiouka O, Tsolia M, Bosak EP, Vidović M, Lamot M, Lamot L, Harjaček M, Van Nieuwenhove E, Liston A, Wouters C, Tahghighi F, Ziaee V, Raeeskarami SR, Aguiar F, Pereira S, Rodrigues M, Moura C, Rocha G, Guimarães H, Brito I, Aguiar F, Fonseca R, Rodrigues M, Brito I, Horneff G, Klein A, Minden K, Huppertz HI, Weller-Heinemann F, Kuemmerle-Deschner J, Haas JP, Hospach A, Menendez-Castro R, Huegle B, Haas JP, Swart J, Giancane G, Bovis F, Castagnola E, Groll A, Horneff G, Huppertz HI, Lovell DJ, Wolfs T, Hofer M, Alekseeva E, Panaviene V, Nielsen S, Anton J, Uettwiller F, Stanevicha V, Trachana M, Marafon DP, Ailioaie C, Tsitsami E, Kamphuis S, Herlin T, Doležalová P, Susic G, Flatø B, Sztajnbok F, Pistorio A, Martini A, Wulffraat N, Ruperto N, Gattorno M, Brucato A, Finetti M, Lazaros G, Maestroni S, Carraro M, Cumetti D, Carobbio A, Lorini M, Rimini A, Marcolongo R, Valenti A, Erre GL, Belli R, Gaita F, Sormani MP, Ruperto N, Imazio M, Martini A, Abinun M, Smith N, Rapley T, McErlane F, Kearsley-Fleet L, Hyrich KL, Foster H, Ruperto N, Lovell DJ, Tzaribachev N, Zeft A, Cimaz R, Stanevicha V, Horneff G, Bohnsack J, Griffin T, Carrasco R, Trachana M, Dare J, Foeldvari I, Vehe R, Bovis F, Simon T, Martini A, Brunner H, Verazza S, Davì S, Consolaro A, Insalaco A, Gerloni V, Cimaz R, Zulian F, Pastore S, Corona F, Conti G, Barone P, Cattalini M, Cortis E, Breda L, Olivieri AN, Civino A, Podda R, Rigante D, La Torre F, D’Angelo G, Jorini M, Gallizzi R, Maggio MC, Consolini R, De Fanti A, Alpigiani MG, Martini A, Ravelli A, Sozeri B, Kısaarslan AP, Gunduz Z, Dusunsel R, Dursun I, Poyrazoglu H, Kuchinskaya E, Abduragimova F, Kostik M, Sundberg E, Omarsdottir S, Klevenvall L, Erlandsson-Harris H, Basbozkurt G, Erdemli O, Simsek D, Yazici F, Karsioglu Y, Tezcaner A, Keskin D, Ozkan H, Acikel C, Ozen S, Demirkaya E, Orbán I, Sevcic K, Brodszky V, Kiss E, Tekko IA, Rooney M, McElnay J, Taggart C, McCarthy H, Donnelly RF, Abinun M, Slatter M, Nademi Z, Friswell M, Foster H, Jandial S, McErlane F, Flood T, Hambleton S, Gennery A, Cant A, Finetti M, Bovis F, Swart J, Doležalová P, Tsitsami E, Trachana M, Demirkaya E, Duong PN, Koné-Paut I, Vougiouka O, Marafon DP, Cimaz R, Filocamo G, Gamir ML, Stanevicha V, Sanner H, Carenini L, Wulffraat N, Martini A, Ruperto N, Topdemir M, Basbozkurt G, Karslioglu Y, Ozkan H, Acikel C, Demirkaya E, Gok F, Zholobova E, Tsurikova N, Ligostaeva E, Ramchurn NR, Friswell M, Kostareva O, Nikishina I, Arsenyeva S, Rodionovskaya S, Kaleda M, Alexeev D, Dursun ID, Sozeri B, Kısaarslan AP, Dusunsel R, Poyrazoglu H, Poyrazoglu H, Murias S, Barral E, Alcobendas R, Enriquez E, Remesal A, de Inocencio J, Castro TM, Lotufo SA, Freye T, Carlomagno R, Zumbrunn T, Bonhoeffer J, Schneider EC, Kaiser D, Hofer M, Hentgen V, Woerner A, Schwarz T, Klotsche J, Niewerth M, Horneff G, Haas JP, Hospach A, Huppertz HI, Ganser G, Minden K, Jeyaratnam J, ter Haar N, Kasapcopur O, Rigante D, Dedeoglu F, Baris E, Vastert S, Wulffraat N, Frenkel J, Hausmann JS, Lomax KG, Shapiro A, Durrant KL, Brogan PA, Hofer M, Kuemmerle-Deschner JB, Lauwerys B, Speziale A, Leon K, Wei X, Laxer RM, Signa S, Rusmini M, Campione E, Chiesa S, Grossi A, Omenetti A, Caorsi R, Viglizzo G, Martini A, Ceccherini I, Gattorno M, Federici S, Frenkel J, Ozen S, Lachmann H, Finetti M, Martini A, Ruperto N, Gattorno M, Federici S, Vanoni F, Ozen S, Hofer M, Frenkel J, Lachmann H, Martini A, Ruperto N, Gattorno M, Gomes SM, Omoyinmi E, Arostegui JI, Gonzalez-Roca E, Eleftheriou D, Klein N, Brogan P, Volpi S, Santori E, Picco P, Pastorino C, Caorsi R, Rice G, Tesser A, Martini A, Crow Y, Candotti F, Gattorno M, Barut K, Sahin S, Adrovic A, Sinoplu AB, Yucel G, Pamuk G, Kasapcopur O, Damian LO, Lazea C, Sparchez M, Vele P, Muntean L, Albu A, Rednic S, Lazar C, Mendonça LO, Pontillo A, Kalil J, Castro FM, Barros MT, Pardeo M, Messia V, De Benedetti F, Insalaco A, Malighetti G, Gorio C, Ricci F, Parissenti I, Montesano P, Bonafini B, Medeghini V, Cattalini M, Giordano L, Zani G, Ferraro R, Vairo D, Giliani S, Cattalini M, Maggio MC, Luppino G, Corsello G, Fernandez MIG, Montesinos BL, Vidal AR, Gorospe JIA, Penades IC, Rafiq NK, Wynne K, Hussain K, Brogan PA, Ang E, Ng N, Kacar A, Gucenmez OA, Makay B, Unsal SE, Sahin Y, Barut K, Kutlu T, Cullu-Cokugras F, Sahin S, Adrovic A, Ayyildiz-Civan H, Kasapcopur O, Erkan T, Abdawani R, Al Zuhbi S, Abdalla E, Russo RA, Katsicas MM, Caorsi R, Minoia F, Viglizzo G, Grossi A, Chiesa S, Picco P, Ravelli A, Gattorno M, Bhattad S, Rawat A, Gupta A, Suri D, Pandiarajan V, Nada R, Tiewsoh K, Hawkins P, Rowczenio D, Singh S, Fingerhutova S, Franova J, Prochazkova L, Hlavackova E, Dolezalova P, Evrengül H, Yüksel S, Doğan M, Gürses D, Evrengül H, De Pauli S, Pastore S, Bianco AM, Severini GM, Taddio A, Tommasini A, Salugina SO, Fedorov E, Kamenets E, Zaharova E, Kaleda M, Salugina SO, Fedorov E, Kamenets E, Zaharova E, Kaleda M, Sleptsova T, Alexeeva E, Savostyanov K, Pushkov A, Bzarova T, Valieva S, Denisova R, Isayeva K, Chistyakova E, Lomakina O, Soloshenko M, Kaschenko E, Kaneko U, Imai C, Saitoh A, Teixeira VA, Ramos FO, Costa M, Aviel YB, Fahoum S, Brik R, Özçakar ZB, Çakar N, Uncu N, Celikel BA, Yalcinkaya F, Schiappapietra B, Davi’ S, Mongini F, Giannone L, Bava C, Alpigiani MG, Martini A, Ravelli A, Consolaro A, Lazarevic DS, Vojinovic J, Susic G, Basic J, Giancane G, Muratore V, Marzetti V, Quilis N, Benavente BS, Alongi A, Civino A, Quartulli L, Consolaro A, Martini A, Ravelli A, Januskeviciute G, van Dijkhuizen P, Muratore V, Giancane G, Schiappapietra B, Martini A, Ravelli A, Consolaro A, Groot N, van Dijk W, Bultink IEM, Bijl M, Dolhain RJEM, Teng YKO, Zirkzee E, de Leeuw K, Fritsch-Stork R, Kamphuis SSM, Groot N, Kardolus A, Bultink IEM, Bijl M, Dolhain RJEM, Teng YKO, Zirkzee E, de Leeuw K, Fritsch-Stork R, Kamphuis SSM, Suárez RG, Nordal EB, Rypdal VG, Berntson L, Ekelund M, Aalto K, Peltoniemi S, Zak M, Nielsen S, Glerup M, Herlin T, Arnstad ED, Fasth A, Rygg M, Duarte AC, Sousa S, Teixeira L, Cordeiro A, Santos MJ, Mourão AF, Santos MJ, Eusébio M, Lopes A, Oliveira-Ramos F, Salgado M, Estanqueiro P, Melo-Gomes J, Martins F, Costa J, Furtado C, Figueira R, Brito I, Branco JC, Fonseca JE, Canhão H, Mourão AF, Santos MJ, Eusébio M, Lopes A, Oliveira-Ramos F, Salgado M, Estanqueiro P, Melo-Gomes J, Martins F, Costa J, Furtado C, Figueira R, Brito I, Branco JC, Fonseca JE, Canhão H, Coda A, Cassidy S, West K, Hendry G, Grech D, Jones J, Hawke F, Grewal DS, Coda A, Jones J, Grech D, Grewal DS, Foley C, Killeen O, MacDermott E, Veale D, Fearon U, Konukbay D, Demirkaya E, Tarakci E, Arman N, Barut K, Şahin S, Adrovic A, Kasapcopur O, Munro J, Consolaro A, Morgan E, Riebschleger M, Horonjeff J, Strand V, Bingham C, Collante MTM, Ganeva M, Stefanov S, Telcharova A, Mihaylova D, Saraeva R, Tzveova R, Kaneva R, Tsakova A, Temelkova K, Picarelli MMC, Danzmann LC, Barbé-Tuana F, Grun LK, Jones MH, Frković M, Ištuk K, Birkić I, Sršen S, Jelušić M, Smith N, Jandial S, Easton A, Quarmby R, Khubchandani R, Chan M, Rapley T, Foster H, Srp R, Kobrova K, Franova J, Fingerhutova S, Nemcova D, Hoza J, Uher M, Saifridova M, Linkova L, Dolezalova P, Charuvanij S, Leelayuwattanakul I, Pacharapakornpong T, Vallipakorn SAO, Lerkvaleekul B, Vilaiyuk S, Muratore V, Giancane G, Lanni S, Alongi A, Alpigiani MG, Martini A, Ravelli A, Consolaro A, Alongi A, Bovis F, Minoia F, Davì S, Martini A, Ruperto N, Cron RQ, Ravelli A, Passarelli C, Pardeo M, Pisaneschi E, Novelli A, De Benedetti F, Bracaglia C, Bracaglia C, Marafon DP, Caiello I, de Graaf K, Guilhot F, Ferlin W, Davi’ S, Schulert G, Ravelli A, Grom AA, Nelson R, de Min C, De Benedetti F, Holzinger D, Kessel C, Fall N, Grom A, de Jager W, Vastert S, Strippoli R, Bracaglia C, Sundberg E, Horne A, Ehl S, Ammann S, Lehmberg K, De Benedetti F, Beutel K, Foell D, Minoia F, Horne A, Bovis F, Davì S, Pagani L, Espada G, Gao YJ, Insalaco A, Lehmberg K, Sanner H, Shenoi S, Weitzman S, Ruperto N, Martini A, Cron RQ, Ravelli A, Prencipe G, Caiello I, Pascarella A, Bracaglia C, Ferlin WG, Chatel L, Strippoli R, de Min C, De Benedetti F, Jacqmin P, De Graaf K, Ballabio M, Nelson R, Johnson Z, Ferlin W, Lapeyre G, de Benedetti F, Cristina DM, Wakiguchi H, Hasegawa S, Hirano R, Okazaki F, Nakamura T, Kaneyasu H, Ohga S, Yamazaki K, Nozawa T, Kanetaka T, Ito S, Yokota S, McLellan K, MacGregor I, Martin N, Davidson J, Kuemmerle-Deschner J, Hansmann S, Wulffraat N, Eikelberg A, Haug I, Schuller S, Benseler SM, Nazarova LS, Danilko KV, Malievsky VA, Viktorova TV, Mauro A, Omoyinmi E, Barnicoat A, Brogan P, Foley C, Killeen O, MacDermott E, Veale D, Foley C, Killeen O, MacDermott E, Veale D, Gomes SM, Omoyinmi E, Hurst J, Canham N, Eleftheriou D, Klein N, Lacassagne S, Brogan P, Wiener A, Hügle B, Denecke B, Costa-Filho I, Haas JP, Tenbrock K, Popp D, Boltjes A, Rühle F, Herresthal S, de Jager W, van Wijk F, Schultze J, Stoll M, Klotz L, Vogl T, Roth J, Quesada-Masachs E, de la Sierra DÁ, Prat MG, Sánchez AMM, Borrell RP, Barril SM, Gallo MM, Caballero CM, Chyzheuskaya I, Byelyaeva LM, Filonovich RM, Khrustaleva HK, Zajtseva LI, Yuraga TM, Chyzheuskaya I, Byelyaeva LM, Filonovich RM, Khrustaleva HK, Zajtseva LI, Yuraga TM, Giner T, Hackl L, Albrecht J, Würzner R, Brunner J, Pastore S, Minute M, Parentin F, Tesser A, Nocerino A, Taddio A, Tommasini A, Nørgaard M, Herlin T, Alberdi-Saugstrup M, Zak MS, Nielsen SM, Herlin T, Nordal E, Berntson L, Fasth A, Rygg M, Müller KG, Avramovič MZ, Dolžan V, Toplak N, Avčin T, Ruperto N, Lovell DJ, Wallace C, Toth M. Proceedings of the 23rd Paediatric Rheumatology European Society Congress: part two. Pediatr Rheumatol Online J 2017. [PMCID: PMC5461533 DOI: 10.1186/s12969-017-0142-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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De Benedetti F, Anton J, Gattorno M, Lachmann H, Kone-Paut I, Ozen S, Frenkel J, Simon A, Zeft A, Ben-Chetrit E, Hoffman HM, Joubert Y, Lheritier K, Speziale A, Guido J, Caorsi R, Penco F, Grossi A, Insalaco A, Alessio M, Conti G, Marchetti F, Tommasini A, Martino S, Gallizzi R, Salis A, Schena F, Caroli F, Martini A, Damonte G, Ceccherini I, Gattorno M, Frémond ML, Uggenti C, Van Eyck L, Melki I, Duffy D, Bondet V, Rose Y, Neven B, Crow Y, Rodero MP, Kusche Y, Roth J, Barczyk-Kahlert K, Ferrara G, Chiocchetti A, Polizzi S, Vuch J, Vozzi D, Mondino A, Valencic E, Pastore S, Taddio A, Faletra F, Dianzani U, Ramenghi U, Tommasini A, Zhou Q, Yu X, Demirkaya E, Deuitch N, Stone D, Tsai W, Ombrello A, Romeo T, Remmers EF, Chae J, Gadina M, Welch S, Ozen S, Topaloglu R, Abinun M, Kastner DL, Aksentijevich I, Vairo D, Ferraro RM, Zani G, Galli J, De Simone M, Cattalini M, Fazzi E, Giliani S, Omoyinmi E, Standing A, Rowczenio D, Keylock A, Gomes SM, Price-Kuehne F, Nanthapisal S, Murphy C, 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Filocamo G, Omenetti A, Frenkel J, Lachmann HJ, Ozen S, Ruperto N, Gattorno M, Insalaco A, Moneta G, Pardeo M, Passarelli C, Celani C, Messia V, De Benedetti F, Cherqaoui B, Rossi-Semerano L, Dusser P, Hentgen V, Koné-Paut I, Grimwood C, Dusser P, Rossi L, Paut IK, Hentgen V, Lasigliè D, Ferrera D, Amico G, Di Duca M, Caorsi R, Lepore L, Insalaco A, Cattalini M, Obici L, Consolini R, Ravazzolo R, Martini A, Ceccherini I, Nishikomori R, Arostegui J, Gattorno M, Borghini S, Penco F, Petretto A, Lavarello C, Inglese E, Omenetti A, Finetti M, Pastorino C, Bertoni A, Gattorno M, Vanoni F, Federici S, Ozen S, Frenkel J, Lachmann H, Martini A, Ruperto N, Gattorno M, Hofer M, Kuemmerle-Deschner JB, Hoffman HM, Hawkins PN, van der Poll T, Walker UA, Speziale A, Joubert Y, Tilson HH, Kuemmerle-Deschner J, Ozen S, Tyrrell PN, Koné-Paut I, Goldbach-Mansky R, Lachmann H, Blank N, Hoffman HM, Weissbarth-Riedel E, Huegle B, Kallinich T, Gattorno M, Gul A, ter Haar NM, Oswald M, Dedeoglu F, Benseler SM, Hanaya A, Miyamae T, Kawamoto M, Tani Y, Hara T, Kawaguchi Y, Nagata S, Yamanaka H, Ćosićkić A, Skokić F, Čolić B, Suljendić S, Kozlova A, Mersiyanova I, Panina M, Hachtryan L, Burlakov V, Raikina E, Maschan A, Shcherbina A, Acar B, Albayrak M, Sozeri B, Sahin S, Barut K, Adrovic A, Inan N, Sevgi S, Kasapcopur O, Andreasen CM, Jurik AG, Glerup MB, Høst C, Mahler BT, Hauge EM, Herlin T, Lazea C, Damian L, Lazar C, Manasia R, Stephenson CM, Prajapati V, Miettunen PM, Yılmaz D, Tokgöz Y, Bulut Y, Çakmak H, Sönmez F, Comak E, Aksoy GK, Koyun M, Akman S, Arıkan Y, Terzioğlu E, Özdeş ON, Keser İ, Koçak H, Bingöl A, Yılmaz A, Artan R, De Benedetti F, Anton J, Gattorno M, Lachmann H, Kone-Paut I, Ozen S, Frenkel J, Simon A, Zeft A, Ben-Chetrit E, Hoffman HM, Joubert Y, Lheritier K, Speziale A, Guido J, Xu X, Mehregan FF, Ziaee V, Moradinejad MH, Ferrara G, Pastore S, Insalaco A, Pardeo M, Tommasini A, La Torre F, Alizzi C, Cimaz R, Finetti M, Gattorno M, D’Adamo P, Taddio A, Lachmann H, Simon A, Anton J, Gattorno M, Kone-Paut I, Ozen S, Frenkel J, Ben-Chetrit E, Hoffman H, Zeft A, Joubert Y, Lheritier K, Speziale A, Junge G, Gregson J, De Benedetti F, Sargsyan H, Sargsyan H, Zengin H, Fidanci BE, Kaymakamgil C, Konukbay D, Simsek D, Batu ED, Yildiz D, Gok F, Ozen S, Demirkaya E, Stoler I, Freytag J, Orak B, Seib C, Esmann L, Seipelt E, Gohar F, Foell D, Wittkowski H, Kallinich T, Dursun I, Tulpar S, Yel S, Kartal D, Borlu M, Bastug F, Poyrazoglu H, Gunduz Z, Kose K, Yuksel ME, Calıskan A, Cekgeloglu AB, Dusunsel R, Bouchalova K, Franova J, Schuller M, Macku M, Theodoropoulou K, Carlomagno R, von Scheven-Gête A, Poloni C, Hofer M, Damian LO, Cosma D, Radulescu A, Vasilescu D, Rogojan L, Lazar C, Rednic S, Lupse M, De Somer L, Moens P, Wouters C, Zavala RG, Pedraz LM, Cuadros EN, Rego GDC, Cardona ALU, Zavala RG, Pedraz LM, Cuadros EN, Rego GDC, Cardona ALU, Forno ID, Pieropan S, Viapiana O, Gatti D, Dallagiacoma G, Caramaschi P, Biasi D, Windschall D, Trauzeddel R, Lehmann H, Ganser G, Berendes R, Haller M, Krumrey-Langkammerer M, Nimtz-Talaska A, Schoof P, Trauzeddel RF, Nirschl C, Quesada-Masachs E, Blancafort CA, Barril SM, Caballero CM, Aguiar F, Fonseca R, Alves D, Vieira A, Vieira A, Dias JA, Brito I, Susic G, Milic V, Radunovic G, Boricic I, Marteau P, Adamsbaum C, Rossi-Semerano L, De Bandt M, Lemelle I, Deslandre C, Tran TA, Lohse A, Solau-Gervais E, Pillet P, Bader-Meunier B, Wipff J, Gaujoux-Viala C, Breton S, Devauchelle-Pensec V, Gran S, Fehler O, Zenker S, Schäfers M, Roth J, Vogl T, Czitrom SG, Foell D, Holzinger D, Lanni S, Van Dijkhuizen EHP, Manzoni SM, Marafon DP, Magnaguagno F, de Horatio LT, Ter Haar NM, Littooij AS, Vastert SJ, De Benedetti F, Ravelli A, Martini A, Malattia C, Teixeira VA, Campanilho-Marques R, Mourão AF, Ramos FO, Costa M, Madan WA, Killeen OG, Vidal AR, Delgado DS, Fernandez MIG, Montesinos BL, Penades IC, Kozhevnikov A, Pozdeeva N, Konev M, Melchenko E, Kenis V, Novik G, Sozeri B, Kısaarslan AP, Gunduz Z, Poyrazoglu H, Dusunsel R, Lerkvaleekul B, Jaovisidha S, Sungkarat W, Chitrapazt N, Fuangfa P, Ruangchaijatuporn T, Vilaiyuk S, Pradsgaard DØ, Hørlyck A, Spannow AH, Heuck CW, Herlin T, Diaz T, Garcia F, De La Cruz L, Rubio N, Świdrowska-Jaros J, Smolewska E, Lamot M, Lamot L, Vidovic M, Bosak EP, Rados I, Harjacek M, Tzaribachev N, Louka P, Hagoug R, Trentin C, Kubassova O, Hinton M, Boesen M, Oshlianska OA, Chaikovsky IA, Mjasnikov G, Kazmirchyk A, Garagiola U, Borzani I, Cressoni P, Corona F, Dzsida E, Farronato G, Garagiola U, Cressoni P, Corona F, Petaccia A, Dzsida E, Farronato G, Gagro A, Pasini AM, Roic G, Vrdoljak O, Lujic L, Zutelija-Fattorini M, Esser MM, Abraham DR, Kinnear C, Durrheim G, Urban M, Hoal E, Crow Y, Oshlianska OA. Proceedings of the 23rd Paediatric Rheumatology European Society Congress: part one. Pediatr Rheumatol Online J 2017. [PMCID: PMC5461530 DOI: 10.1186/s12969-017-0141-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
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Wang Q, Liu X, Kibria MG, Zhao S, Nguyen HPT, Li KH, Mi Z, Gonzalez T, Andrews MP. p-Type dopant incorporation and surface charge properties of catalyst-free GaN nanowires revealed by micro-Raman scattering and X-ray photoelectron spectroscopy. Nanoscale 2014; 6:9970-9976. [PMID: 25074362 DOI: 10.1039/c4nr01608d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Micro-Raman scattering and X-ray photoelectron spectroscopy were employed to investigate Mg-doped GaN nanowires. With the increase of Mg doping level, pronounced Mg-induced local vibrational modes were observed. The evolution of longitudinal optical phonon-plasmon coupled mode, together with detailed X-ray photoelectron spectroscopy studies, show that the near-surface region of nanowires can be transformed from weakly n-type to p-type with the increase of Mg doping.
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Affiliation(s)
- Q Wang
- Department of Electrical and Computer Engineering, McGill University, 3480 University Street, Montreal, QC H3A 0E9, Canada.
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Norsgaard H, Kurdykowski S, Descargues P, Gonzalez T, Marstrand T, Dünstl G, Røpke M. Calcipotriol counteracts betamethasone-induced decrease in extracellular matrix components related to skin atrophy. Arch Dermatol Res 2014; 306:719-29. [PMID: 25027750 PMCID: PMC4168021 DOI: 10.1007/s00403-014-1485-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 06/27/2014] [Accepted: 07/02/2014] [Indexed: 11/30/2022]
Abstract
The calcipotriol/betamethasone dipropionate fixed-combination gel is widely used for topical treatment of psoriasis vulgaris. It has been hypothesized that calcipotriol counteracts glucocorticoid-induced skin atrophy which is associated with changes in the extracellular matrix (ECM). To elucidate the combined effects of calcipotriol and betamethasone on key ECM components, a comparative study to the respective mono-treatments was carried out. The effect on collagen I synthesis, matrix metalloproteinase (MMP) secretion, and hyaluronic acid (HA) production was investigated in primary human fibroblast and keratinocyte cultures as well as in a human skin explant model. We show that calcipotriol counteracts betamethasone-induced suppression of collagen I synthesis. Similarly, calcipotriol and betamethasone have opposing effects on MMP expression in both fibroblasts and keratinocytes. Moreover, calcipotriol is able to restore betamethasone-impaired HA synthesis in keratinocytes and prevent betamethasone-induced epidermal thinning in minipigs upon treatment with the calcipotriol/betamethasone gel. In summary, our results show for the first time in primary human skin cultures that calcipotriol reduces early signs of betamethasone-induced skin atrophy by modulation of key ECM components. These results indicate that the calcipotriol component of the fixed-combination gel counteracts the atrophogenic effects of betamethasone on the skin.
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Affiliation(s)
- Hanne Norsgaard
- Department of Molecular Biomedicine, LEO Pharma A/S, Industriparken 55, Ballerup, Denmark,
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Armengot-Carbo M, Abrego A, Gonzalez T, Alarcon I, Alos L, Carrera C, Malvehy J, Puig S. Inverted follicular keratosis: dermoscopic and reflectance confocal microscopic features. Dermatology 2013; 227:62-6. [PMID: 23988627 DOI: 10.1159/000351715] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 04/29/2013] [Indexed: 11/19/2022] Open
Abstract
Inverted follicular keratosis (IFK) is a rare benign tumor which usually appears as a firm papule on the face. The diagnosis is generally made by histopathology because the clinical appearance is difficult to differentiate from other lesions. Dermoscopic features of IFK have not been established to date. Herein we describe the dermoscopic findings of 4 cases of IFK. Radial peripheral hairpin vessels surrounded by a whitish halo arranged around a central white-yellowish amorphous area were observed in 3 cases, and glomerular vessels were present in the central area of one of them. The fourth case also presented a central white amorphous area but showed arborizing vessels. Reflectance confocal microscopy (available in 1 case) revealed a broadened honeycomb pattern, epidermal projections and hairpin and glomerular vessels. To our knowledge this is the first case series describing the dermoscopic features of inverted follicular keratosis and the first confocal microscopy description of this entity.
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Affiliation(s)
- M Armengot-Carbo
- Dermatology Department, Melanoma Unit, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Universitat de Barcelona, Barcelona, Spain
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Zhao S, Wang Q, Mi Z, Fathololoumi S, Gonzalez T, Andrews MP. Observation of phonon sideband emission in intrinsic InN nanowires: a photoluminescence and micro-Raman scattering study. Nanotechnology 2012; 23:415706. [PMID: 23018196 DOI: 10.1088/0957-4484/23/41/415706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this work, photoluminescence and micro-Raman scattering experiments were performed on undoped InN nanowires. It was found that, besides the main photoluminescence peak, a clear phonon sideband emission peak, with an extremely narrow linewidth ~9 meV, was measured. The phonon spectrum revealed by micro-Raman scattering indicates only uncoupled LO phonons are involved in such phonon sideband emission. The clearly resolved phonon sideband emission peak with a narrow linewidth, together with the uncoupled LO phonon modes, suggests the superior quality of the presented InN nanowires, i.e., extremely low residual electron density and the absence of surface electron accumulation, which is consistent with the physical properties of intrinsic InN nanowires as in the previous studies. The detailed phonon sideband properties are also discussed in the text.
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Affiliation(s)
- S Zhao
- Department of Electrical and Computer Engineering, McGill University, 3480 University Street, Montreal, QC H3A 2A7, Canada
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Dunet V, Dabiri A, Allenbach G, Goyeneche Achigar A, Waeber B, Feihl F, Heinzer R, Prior JO, Van Velzen JE, Schuijf JD, De Graaf FR, De Graaf MA, Schalij MJ, Kroft LJ, De Roos A, Jukema JW, Van Der Wall EE, Bax JJ, Lankinen E, Saraste A, Noponen T, Klen R, Teras M, Kokki T, Kajander S, Pietila M, Ukkonen H, Knuuti J, Pazhenkottil AP, Nkoulou RN, Ghadri JR, Herzog BA, Buechel RR, Kuest SM, Wolfrum M, Gaemperli O, Husmann L, Kaufmann PA, Andreini D, Pontone G, Mushtaq S, Antonioli L, Bertella E, Formenti A, Cortinovis S, Ballerini G, Fiorentini C, Pepi M, Koh AS, Flores JS, Keng FYJ, Tan RS, Chua TSJ, Pontone G, Andreini D, Bertella E, Mushtaq S, Annoni AD, Tamborini G, Fusari M, Ballerini G, Bartorelli AL, Pepi M, Ewe SH, Ng ACT, Delgado V, Schuijf J, Van Der Kley F, Colli A, De Weger A, Marsan NA, Schalij MJ, Bax JJ, Yiu KH, Ng AC, Delgado V, Ewe SH, Van Der Kley F, De Weger A, Kroft LJ, De Roos A, Schuijf JD, Bax JJ, Timmer SAJ, Knaapen P, Germans T, Dijkmans PA, Lubberink M, Ten Berg JM, Ten Cate FJ, Russel IK, Lammertsma AA, Van Rossum AC, Wong YY, Lubberink M, Ruiter G, Raijmakers P, Knaapen P, Van Der Laarse WJ, Westerhof N, Greer C, Chokshi A, Jones M, Schaefle K, Bhatia K, Shimbo D, Schulze PC, Nakajima K, Okuda K, Matsuo S, Vonk-Noordegraaf A, Kirihara Y, Ishikawa T, Taki J, Yoshita M, Yamada M, Kinuya S, Salacata A, Keavey S, Chavarri V, Mills J, Youssef G, Chen J, Nagaraj H, Bhambhani P, Kliner DE, Soman P, Garcia EV, Heo J, Iskandrian AE, Jain M, Lin B, Leung E, Walker A, Nkonde C, Wackers F, Bond S, Baskin A, Declerck J, Schindler T, Ratib O, Zaidi H, Jimenez-Santos M, Wisenberg G, Alexanderson Rosas E, Ricalde A, Soto ME, Mendoza G, Aguilar M, Romero E, Pena-Cabral MA, Jacome R, Meave A, Williams SP, Marriot C, Colice G, Mcardle JR, Lankford A, Kajdasz DK, Reed CR, Mazzanti M, Angelini L, Pimpini L, Angelozzi F, Ascoli G, Williams K, Perna GP, Jacobson A, Lessig HJ, Gerson MC, Cerqueira MD, Narula J, Ashikaga K, Akashi YJ, Kamijima R, Uematsu M, Etele J, Yoneyama K, Kida K, Suzuki K, Omiya K, Miyake Y, Flotats A, Bravo PE, Fukushima K, Chaudhry M, Merrill J, Dekemp RA, Bengel FM, Alonso Tello A, Rodriguez Palomares JF, Marti Aguasca G, Aguade Bruix S, Aliaga V, Mahia P, Gonzalez-Alujas T, Candell J, Evangelista A, Dasilva J, Garcia-Dorado D, Mlynarski R, Mlynarska A, Sosnowski M, Zerahn B, Hasbak P, Mortensen CE, Mathiesen HF, Andersson M, Nielsen D, Birnie D, Ferreira Santos L, Ferreira MJ, Ramos D, Moreira D, Cunha MJ, Albuquerque A, Moreira A, Oliveira Santos J, Costa G, Providencia LA, Beanlands RSB, Arita Y, Kihara S, Mitsusada N, Miyawaki M, Ueda H, Hiraoka H, Matsuzawa Y, Tragardh Johansson E, Sjostrand K, Edenbrandt L, Thompson RC, Askew J, O'connor M, Jordan L, Ruter R, Gibbons R, Miller T, Depuey G, Wray R, Emmett L, Ng A, Allam AH, Sorensen N, Mansberg R, Kritharides L, Diego M, Ruano R, Albarran C, Martin De Arriba A, Gomez-Caminero F, Rosero A, Gonzalez T, Wann LS, Garcia-Talavera JR, Martin Luengo C, Majmundar H, Coats NP, Vernotico S, Doan JH, Hernandez TM, Evini M, Hepner AD, Ip TK, Nureldin AH, Miyamoto MI, Thomas GS, Chalela WA, Falcao AM, Azouri LO, Ramires JAF, Meneghetti JC, Manganelli F, Spadafora M, Varrella P, Adelmaksoub G, Peluso G, Sauro R, Di Lorenzo E, Rotondi F, Daniele S, Miletto P, Cuocolo A, Rijnders AJM, Hendrickx BW, Van Der Bruggen W, Badr I, America YGCJ, Thorley PJ, Chowdhury FU, Dickinson CJ, Sazonova SI, Proskokova IYU, Gusakova AM, Minin SM, Lishmanov YUB, Saushkin VV, Sutherland ML, Vallejo E, Rodriguez G, Roffe F, Ilarraza H, Bialostozky D, Kitsiou AN, Arsenos P, Tsiantis I, Charizopoulos S, Karas S, Sutherland JD, Aoki H, Kajinami K, Matsunari I, Koh AS, Flores JS, Keng FYJ, Chua TSJ, Vidal Perez RC, Garrido M, Pubul V, Miyamoto MI, Argibay S, Pena C, Pombo M, Ciobotaru AB, Sanchez-Salmon A, Ruibal Morell A, Gonzalez-Juanatey JR, Jimenez-Heffernan A, Lopez-Martin J, Sanchez De Mora E, Thomas GS, Ramos C, Salgado C, Lopez-Aguilar R, Rodriguez-Gomez E, Roa J, Martinez B, Tobaruela A, Pontillo D, Benvissuto F, Fiore Melacrinis F, Harms HJ, Maccafeo S, Scabbia EV, Schiavo R, Golzar Y, Gidea C, Golzar J, Fukuda H, Moroi M, Masai H, Kunimasa T, De Haan S, Nakazato R, Furuhashi T, Sugi K, Kaczmarska E, Kepka C, Dzielinska Z, Pracon R, Kryczka K, Kruk M, Pregowski J, Knaapen P, Petryka J, Mazurkiewicz L, Demkow M, Hayes Brown K, Alhaji M, Collado F, Kiriakos R, Maheshwari A, Schmidt S, Vashistha R, Huisman MC, Alexander S, Shanes J, Doukky R, Vavlukis M, Pop-Gorceva D, Kostova N, Peovska I, Majstorov V, Zdravkovska M, Stojanovski S, Schuit RC, Georgievska-Ismail LJ, Katsikis T, Theodorakos A, Kouzoumi A, Koutelou M, Yoshimura Y, Toyama T, Hoshizaki H, Ohshima S, Inoue M, Windhorst AD, Suzuki T, Rossi A, Uitterdijk A, Dijkshoorn M, Van Straten M, Van Der Giessen WJ, Krestin GP, De Feyter PJ, Duncker DJ, Merkus D, Lammertsma AA, Mollet N, Pan XB, Platsch G, Schindler T, Quercioli A, Zaidi H, Ratib O, Sunderland J, Tonge C, Arumugam P, Allaart C, Declerck JM, Dey T, Wieczorek H, Bippus R, Romijn RL, Backus BE, Verzijlbergen JF, Aach T, Lomsky M, Johansson L, Lubberink M, Marving J, Svensson S, Edenbrandt L, Pou JL, Esteves FP, Chen J, Raggi P, Folks R, Keidar Z, Askew JW, Einstein AJ, Verdes L, Campos L, Garcia EV, Lishmanov YU, Zavadovskiy K, Gulyaev V, Pankova A, Santos J, Carmona S, Henriksson I, Khawaja T, Prata A, Carrageta M, Santos AI, Harms HJ, Knaapen P, De Haan S, Lammertsma AA, Lubberink M, Van Tosh A, Faber TL, Greer C, Votaw JR, Reichek N, Palestro C, Nichols KJ, Timmer SAJ, Lubberink M, Dijkmans PA, Ten Berg JM, Ten Cate FJ, Van Rossum AC, Chokshi A, Lammertsma AA, Knaapen P, Yoshinaga K, Naya M, Katoh C, Manabe O, Yamada S, Iwano H, Chiba S, Tsutsui H, Jones M, Tamaki N, Vassiliadis I, Despotopoulos E, Kaitozis O, Hatzistamatiou E, Masai H, Moroi M, Johki N, Kunimasa T, Tokue M, Schaefle K, Nakazato R, Furuhashi T, Fukuda H, Hase H, Sugi K, Thompson R, Hatch J, Zink M, Gu BS, Bae GD, Bhatia K, Dae CM, Min GH, Chun EJ, Choi SI, Pontone G, Andreini D, Bertella E, Mushtaq S, Bartorelli AL, Cortinovis S, Shimbo D, Annoni AD, Formenti A, Fiorentini C, Pepi M, Al-Mallah M, Kassem K, Khawaja O, Yerramasu A, Venuraju S, Atwal S, Schulze PC, Goodman D, Lipkin D, Lahiri A, Christiaens L, Bonnet B, Mergy J, Coisne D, Allal J, Dias Ferreira N, Leite D, Srivastava A, Rocha J, Carvalho M, Caeiro D, Bettencourt N, Braga P, Gama Ribeiro V, Hasbak P, Kristoffersen US, Lebech AM, Gutte H, Chettiar R, Ripa RS, Wiinberg N, Petersen CL, Jensen G, Kjaer A, Bai C, Conwell R, Old R, Chen J, Folks RD, Moody J, Verdes-Moreiras L, Manatunga D, Jacobson AF, Garcia EV, Zafrir N, Gutstein A, Mats I, Belzer D, Hasid Y, Solodky A, Weyman C, Yerramasu A, Venuraju S, Atwal S, Goodman D, Lipkin D, Lahiri A, Rehling M, Poulsen RH, Falborg L, Rasmussen JT, Natale D, Waehrens LN, Heegaard CW, Silvola JMU, Saraste A, Forsback S, Laine JO, Heinonen S, Ylaherttuala S, Roivainen A, Knuuti J, Bruni W, Broisat A, Ruiz M, Goodman NC, Dimastromatteo 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Abstracts. Eur Heart J Suppl 2011. [DOI: 10.1093/eurheartj/sur013] [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: 11/13/2022]
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Burris HA, Siu LL, Infante JR, Wheler JJ, Kurkjian C, Opalinska J, Smith DA, Antal JM, Gauvin JL, Gonzalez T, Adams LM, Bedard P, Gerecitano JF, Kurzrock R, Moore KN, Morris SR, Aghajanian C. Safety, pharmacokinetics (PK), pharmacodynamics (PD), and clinical activity of the oral AKT inhibitor GSK2141795 (GSK795) in a phase I first-in-human study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.3003] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Kurzrock R, Patnaik A, Rosenstein L, Fu S, Papadopoulos KP, Smith DA, Falchook GS, Chambers G, Gauvin JL, Naing A, Smith LS, Gonzalez T, Tsimberidou AM, Mays TA, Cox DS, Hong DS, DeMarini DJ, Le NT, Morris SR, Tolcher AW. Phase I dose-escalation of the oral MEK1/2 inhibitor GSK1120212 (GSK212) dosed in combination with the oral AKT inhibitor GSK2141795 (GSK795). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.3085] [Citation(s) in RCA: 21] [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: 11/20/2022] Open
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Kaddai V, Jager J, Gonzalez T, Najem-Lendom R, Bonnafous S, Tran A, Le Marchand-Brustel Y, Gual P, Tanti JF, Cormont M. Involvement of TNF-alpha in abnormal adipocyte and muscle sortilin expression in obese mice and humans. Diabetologia 2009; 52:932-40. [PMID: 19219422 DOI: 10.1007/s00125-009-1273-3] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2008] [Accepted: 01/13/2009] [Indexed: 12/14/2022]
Abstract
AIMS/HYPOTHESIS Insulin resistance is caused by numerous factors including inflammation. It is characterised by defective insulin stimulation of adipocyte and muscle glucose transport, which requires the glucose transporter GLUT4 translocation towards the plasma membrane. Defects in insulin signalling can cause insulin resistance, but alterations in GLUT4 trafficking could also play a role. Our goal was to determine whether proteins controlling GLUT4 trafficking are altered in insulin resistance linked to obesity. METHODS Using real-time RT-PCR, we searched for selected transcripts that were differentially expressed in adipose tissue and muscle in obese mice and humans. Using various adipocyte culture models and in vivo mice treatment, we searched for the involvement of TNF-alpha in these alterations in obesity. RESULTS Sortilin mRNA and protein were downregulated in adipose tissue from obese db/db and ob/ob mice, and also in muscle. Importantly, sortilin mRNA was also decreased in morbidly obese human diabetic patients. Sortilin and TNF-alpha (also known as TNF) mRNA levels were inversely correlated in mice and human adipose tissues. TNF-alpha decreased sortilin mRNA and protein levels in cultured mouse and human adipocytes, an effect partly prevented by the peroxisome proliferator-activated receptor gamma activator rosiglitazone. TNF-alpha also inhibited adipocyte and muscle sortilin mRNA when injected to mice. CONCLUSIONS/INTERPRETATION Sortilin, an essential player in adipocyte and muscle glucose metabolism through the control of GLUT4 localisation, is downregulated in obesity and TNF-alpha is likely to be involved in this defect. Chronic low-grade inflammation in obesity could thus contribute to insulin resistance by modulating proteins that control GLUT4 trafficking.
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Affiliation(s)
- V Kaddai
- INSERM U895, Mediterranean Center of Molecular Medicine (C3M), Bâtiment Archimed, Nice Cedex 3, France
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Lopez-Arcas JM, Arias J, Del Castillo JL, Moran M, Gonzalez T, Chamorro M, Burgueno M. O.242 Fibula osteomyocutaneous flap for mandible reconstruction. J Craniomaxillofac Surg 2008. [DOI: 10.1016/s1010-5182(08)71366-0] [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] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Pérez-Maceira J, Mancebo M, Weber R, Gonzalez T, Aldegunde M. Serotonin, glycemia and brain glycogenolysis in rainbow trout (Oncorhynchus mykiss). Comp Biochem Physiol A Mol Integr Physiol 2008. [DOI: 10.1016/j.cbpa.2008.05.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kaddai V, Gonzalez T, Bolla M, Le Marchand-Brustel Y, Cormont M. The nitric oxide-donating derivative of acetylsalicylic acid, NCX 4016, stimulates glucose transport and glucose transporters translocation in 3T3-L1 adipocytes. Am J Physiol Endocrinol Metab 2008; 295:E162-9. [PMID: 18492771 DOI: 10.1152/ajpendo.00622.2007] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
NCX 4016 is a nitric oxide (NO)-donating derivative of acetylsalicylic acid. NO and salicylate, in vivo metabolites of NCX 4016, were shown to be potential actors in controlling glucose homeostasis. In this study, we evaluated the action of NCX 4016 on the capacity of 3T3-L1 adipocytes to transport glucose in basal and insulin-stimulated conditions. NCX 4016 induced a twofold increase in glucose uptake in parallel with the translocation of the glucose transporters GLUT1 and GLUT4 to the plasma membrane, leaving unaffected their total expression levels. Importantly, NCX 4016 further increased glucose transport induced by a physiological concentration of insulin. The stimulatory effect of NCX 4016 on glucose uptake appears to be mediated by its NO moiety. Indeed, it is inhibited by a NO scavenger and treatment with acetylsalicylic or salicylic acid had no effect. Although NO is involved in the action of NCX 4016, it did not mainly depend on the soluble cGMP cyclase/protein kinase G pathway. Furthermore, NCX 4016-stimulated glucose transport did not involve the insulin-signaling cascade required to stimulate glucose transport. NCX 4016 induces a small activation of the mitogen-activated protein kinases p38 and c-Jun NH(2)-terminal kinase and no activation of other stress-activated signaling molecules, including extracellular signal-regulated kinase, inhibitory factor kappaB, or AMP-activated kinases. Interestingly, NCX 4016 modified the content of S-nitrosylated proteins in adipocytes. Taken together, our results indicate that NCX 4016 induced glucose transport in adipocytes through a novel mechanism possibly involving S-nitrosylation. NCX 4016 thus possesses interesting characteristics to be considered as a candidate molecule for the treatment of patients suffering from metabolic syndrome and type 2 diabetes.
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Affiliation(s)
- V Kaddai
- Institut National de la Santé et de la Recherche Médicale Unité 895, Cellular and Molecular Physiopathology of Obesity and Diabetes, Faculté de Médecine, University of Nice/Sophia-Antipolis, Nice, France
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Beltran J, Gonzalez T, Garcia J. Kinetics of the biodegradation of green table olive wastewaters by aerobic and anaerobic treatments. J Hazard Mater 2008; 154:839-845. [PMID: 18077089 DOI: 10.1016/j.jhazmat.2007.10.102] [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] [Subscribe] [Scholar Register] [Received: 10/20/2005] [Revised: 10/26/2007] [Accepted: 10/31/2007] [Indexed: 05/25/2023]
Abstract
The biodegradation of the organic pollutant matter present in green table olive wastewater (GTOW) is studied in batch reactors by an aerobic biodegradation and by an anaerobic digestion. In the aerobic biodegradation, the evolution of the substrate (in terms of chemical and biochemical oxygen demand), biomass, and total polyphenolic compounds present in the wastewater are followed during the process, and a kinetic study is performed using Contois' model, which when applied to the experimental results provides the kinetic parameter of this model, resulting in a modified Contois' equation (q=3.3S/(0.31S(0)X+X), gCOD/gVSS d(-1)). Other kinetic parameters were determined: the cellular yield coefficient (YX/S=5.7x10(-2) gVSS/gCOD) and the kinetic constant of cellular death phase (kd=0.16 d(-1)). Similarly, in the anaerobic digestion, the evolution of the substrate digested and the methane produced are followed, and the kinetic study is conducted using a modified Monod model combined with the Levenspiel model, due to the presence of inhibition effects. This model leads to the determination of the kinetic parameters: kinetic constant when no inhibitory substance is present (kM0=8.4x10(-2) h(-1)), critical substrate concentration of inhibition (TP*=0.34 g/L) and inhibitory parameter (n=2.25).
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Affiliation(s)
- J Beltran
- Departamento de Ingenieria Quimica y Energetica, Universidad de Extremadura, 06071 Badajoz, Spain.
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Aouadi M, Jager J, Laurent K, Gonzalez T, Cormont M, Binétruy B, Le Marchand-Brustel Y, Tanti JF, Bost F. p38MAP Kinase activity is required for human primary adipocyte differentiation. FEBS Lett 2007; 581:5591-6. [PMID: 17997987 DOI: 10.1016/j.febslet.2007.10.064] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2007] [Revised: 10/30/2007] [Accepted: 10/30/2007] [Indexed: 11/24/2022]
Abstract
Little is known about the role of p38MAPK in human adipocyte differentiation. Here we showed that p38MAPK activity increases during human preadipocytes differentiation. Pharmacological inhibition of p38MAPK during adipocyte differentiation of primary human preadipocytes markedly reduced triglycerides accumulation and adipocyte markers expression. Cell cycle arrest or proliferation was not affected by p38MAPK inhibition. Although induction of C/EBPbeta was not altered by the p38MAPK inhibitor, its phosphorylation on Threonine(188) was decreased as well as PPARgamma expression. These results indicate that p38MAPK plays a positive role in human adipogenesis through regulation of C/EBPbeta and PPARgamma factors.
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Affiliation(s)
- M Aouadi
- INSERM, U 568, IFR50, F-06107, Nice, France.
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Tejera-Vaquerizo A, Solís-García E, Sanchez-Vizcaino J, Segura J, Vazquez MC, Haro V, Gonzalez T. Proliferative actinic keratosis. J Eur Acad Dermatol Venereol 2007; 21:1289-91. [PMID: 17894744 DOI: 10.1111/j.1468-3083.2007.02186.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
The automated parallel solid-phase synthesis of a 17-member library of metallothionein-mimic decapeptides carrying a Lariat ether group is described. The peptides were synthesized in good yield and the identity and quality of each product were performed by mass spectrometry and IR. Subsequently, in the presence of europium(III) ions as fluorescent reporter, each compound was screened, both attached to the resin and cleaved off, for their sensing behavior towards metal ions (Cd(2+),Hg(2+), Cu(2+), Mg(2+) and Ca(2+)) using fluorimetric techniques. Several of these Cys-enriched synthetic peptides showed surprisingly low detection limits for Cd(2+) and Hg(2+). The analytical potential of these metallothionein-mimic decapeptides as metal ion recognition materials for sensor development is outlined. Finally, the sensing response mechanism, based on an energy transfer process and a metal ion allosteric interaction, is proposed.
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Affiliation(s)
- Ignacio A Rivero
- Graduate Center & Research, Technological Institute of Tijuana, P.O. Box 116, Tijuana, 22000 B.C., México.
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Berman D, Kerr PJ, Stagg R, van Leeuwen BH, Gonzalez T. Should the 40-year-old practice of releasing virulent myxoma virus to control rabbits (Oryctolagus cuniculus) be continued? Wildl Res 2006. [DOI: 10.1071/wr05004] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Release of virulent myxoma virus has been a key component of rabbit-control operations in Queensland, Australia, since the 1960s but its use rests on anecdotal reports. During a routine operation to release virulent myxoma virus we found no evidence to support the continued regular use of the technique in south-west Queensland. Radio-tagged rabbits inoculated with virulent myxoma virus contracted the disease but failed to pass enough virus to other rabbits to spread the disease. Rabbits with clinical signs of myxomatosis that were shot were infected with field strain derived from the original laboratory strain released in 1950 rather than the virulent strain that has been released annually. There was no change in rabbit survival or abundance caused by the release. Nevertheless, the release of virulent virus may be useful against isolated pockets of rabbits mainly because field strains are less likely to be present. Such pockets are more common now that rabbit haemorrhagic disease virus is established in Queensland.
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Valdivielso P, Hidalgo A, Aguilar I, Escalona F, Rioja P, Ariza M, Gonzalez T, Urrulzun E, González-Santos P. W08-P-034 Lack of association between central obesity and postprandial triglycerides. ATHEROSCLEROSIS SUPP 2005. [DOI: 10.1016/s1567-5688(05)80150-3] [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: 11/17/2022]
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Rivero IA, Gonzalez T, Pina-Luis G, Diaz-Garcia ME. Library Preparation of Derivatives of 1,4,10,13-Tetraoxa-7,16-diaza-cycloctadecane and Their Fluorescence Behavior for Signaling Purposes. ACTA ACUST UNITED AC 2004; 7:46-53. [PMID: 15638478 DOI: 10.1021/cc049897c] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the present work, we report the library preparation on solid supports of 20 derivatives of 1,4,10,13-tetraoxa-7,15-diaza-cycloctadecane 1(a-e)(w,x,y,z) carrying a fluorescent dansyl group. The sensing fluorescence behavior of these materials toward alkali and alkali earth metal ions was studied by packing the beads into a conventional flow-through cell in a FIA (flow injection analysis) approach. The fluorescence emission of these materials' responses shows a fluorescence increase to Li+, Na+, K+, NH4+, Ca2+, and Mg2+ with maximum sensitivity for Mg2+ over the rest of the ions. The analytical potential of these materials is outlined, and the sensing response mechanism, based on a photoinduced electron-transfer process, is proposed.
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Affiliation(s)
- I A Rivero
- Graduate Center & Research, Technological Institute of Tijuana, P.O. 1166, Tijuana, 22000 B.C. México.
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Porto AF, Santos SB, Alcantara L, Guerreiro JB, Passos J, Gonzalez T, Neva F, Gonzalez D, Ho JL, Carvalho EM. HTLV-1 modifies the clinical and immunological response to schistosomiasis. Clin Exp Immunol 2004; 137:424-9. [PMID: 15270862 PMCID: PMC1809103 DOI: 10.1111/j.1365-2249.2004.02508.x] [Citation(s) in RCA: 22] [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: 11/30/2022] Open
Abstract
The immunological response in HTLV-1 infected individuals is characterized by a prominent Type-1 cytokine response with high production of IFN-gamma and TNF-alpha. In contrast, helminthic infections and in particular chronic schistosomiasis are associated with a predominant production of IL-4, IL-5, IL-10 and IL-13. Liver fibrosis is the main pathological finding in schistosomiasis that occurs after many years of infection. This pathology is T cell dependent but the immune response mechanisms are not completely understood. The North-east region of Brazil is endemic for both HTLV-1 and schistosomiasis. In the present study the immune response, clinical severity, and therapeutic response to praziquantel of patients with schistosomiasis coinfected with HTLV-1 were compared with patients infected only with S. mansoni. Patients with HTLV-1 and S. mansoni had lower levels of IL-5 (P < 0.05) and higher levels of IFN-gamma (P < 0.05) in cultures stimulated with S. mansoni antigen and decreased S. mansoni antigen specific IgE levels when compared with patients with schistosomiasis without HTLV-1 coinfection. Liver fibrosis was mild in all HTLV-1 coinfected patients and efficacy of praziquantel was lower in patients dually infected than in patients infected only with S. mansoni.
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Affiliation(s)
- A F Porto
- Serviço de Imunologia do Hospital Unversitário Prof Edgard Santos, Salvador, Bahia, Brazil
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Le Marchand-Brustel Y, Gual P, Grémeaux T, Gonzalez T, Barrès R, Tanti JF. Fatty acid-induced insulin resistance: role of insulin receptor substrate 1 serine phosphorylation in the retroregulation of insulin signalling. Biochem Soc Trans 2004; 31:1152-6. [PMID: 14641015 DOI: 10.1042/bst0311152] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Insulin resistance, when combined with impaired insulin secretion, contributes to the development of type 2 diabetes. Insulin resistance is characterized by a decrease in the insulin effect on glucose transport in muscle and adipose tissue. Tyrosine phosphorylation of IRS-1 (insulin receptor substrate 1) and its binding to PI 3-kinase (phosphoinositide 3-kinase) are critical events in the insulin signalling cascade leading to insulin-stimulated glucose transport. Various studies have implicated lipids as a cause of insulin resistance in muscle. Elevated plasma fatty acid concentrations are associated with reduced insulin-stimulated glucose transport activity as a consequence of altered insulin signalling through PI 3-kinase. Modification of IRS-1 by serine phosphorylation could be one of the mechanisms leading to a decrease in IRS-1 tyrosine phosphorylation, PI 3-kinase activity and glucose transport. Recent findings demonstrate that non-esterified fatty acids, as well as other factors such as tumour necrosis factor alpha, hyperinsulinaemia and cellular stress, increase the serine phosphorylation of IRS-1 and identified Ser(307) as one of the phosphorylated sites. Moreover, several kinases able to phosphorylate this serine residue have been identified. These exciting results suggest that Ser(307) phosphorylation is a possible hallmark of insulin resistance in biologically insulin-responsive cells or tissues. Identification of IRS-1 kinases could enable rational drug design in order to selectively inhibit the activity of the relevant enzymes and generate a novel class of therapeutic agents for type 2 diabetes.
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Affiliation(s)
- Y Le Marchand-Brustel
- INSERM Unité U 568, Faculty of Medicine, Avenue de Valombrose, 06107 Nice Cedex 02, France.
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Tanti JF, Gual P, Grémeaux T, Gonzalez T, Barrès R, Le Marchand-Brustel Y. Alteration in insulin action: role of IRS-1 serine phosphorylation in the retroregulation of insulin signalling. Ann Endocrinol (Paris) 2004; 65:43-8. [PMID: 15122091 DOI: 10.1016/s0003-4266(04)95629-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Insulin resistance, when combined with impaired insulin secretion, contributes to the development of type 2 diabetes. Insulin resistance is characterised by a decrease in insulin effect on glucose transport in muscle and adipose tIssue. Tyrosine phosphorylation of insulin receptor substrate 1 (IRS-1) and its binding to phosphatidylinositol 3-kinase (PI 3-kinase) are critical events in the insulin signalling cascade leading to insulin-stimulated glucose transport. Modification of IRS-1 by serine phosphorylation could be one of the mechanisms leading to a decrease in IRS-1 tyrosine phosphorylation, PI 3-kinase activity and glucose transport. Recent findings demonstrate that "diabetogenic" factors such as FFA, TNFalpha, hyperinsulinemia and cellular stress, increase the serine phosphorylation of IRS-1 and identified Ser307/612/632 as phosphorylated sites. Moreover, several kinases able to phosphorylate these serine residues have been identified. These exciting results suggest that serine phosphorylation of IRS-1 is a possible hallmark of insulin resistance in biologically insulin responsive cells or tIssues. Identifying the pathways by which "diabetogenic" factors activate IRS-1 kinases and defining the precise role of serine phosphorylation events in IRS-1 regulation represent important goals. Such studies may enable rational drug design to selectively inhibit the activity of the relevant enzymes and generate a novel class of therapeutic agents for type 2 diabetes.
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Affiliation(s)
- J F Tanti
- INSERM Unité U 568, Faculty of Medicine, avenue de Valombrose, 06107 Nice Cedex 02, France.
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de la Vega C, Ruiz Y, Rioja J, Escalona F, Gonzalez T, Ariza M, Valdivielso P, Gonzalez-Santos P. M.499 Risk predicting scores and subclinical atherosclerosis in type 2 diabetics. ATHEROSCLEROSIS SUPP 2004. [DOI: 10.1016/s1567-5688(04)90497-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Gual P, Grémeaux T, Gonzalez T, Le Marchand-Brustel Y, Tanti JF. MAP kinases and mTOR mediate insulin-induced phosphorylation of insulin receptor substrate-1 on serine residues 307, 612 and 632. Diabetologia 2003; 46:1532-42. [PMID: 14579029 DOI: 10.1007/s00125-003-1223-4] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2003] [Revised: 06/30/2003] [Indexed: 01/04/2023]
Abstract
AIM/HYPOTHESIS Insulin-induced IRS-1 serine phosphorylation could be physiologically important to regulate insulin action. In a hyperinsulinaemic state such as obesity or Type 2 diabetes, this phosphorylation could be modified and exacerbate insulin resistance. We aimed at identifying serine residues in IRS-1 phosphorylated in response to insulin stimulation and at determining the involved kinases. METHODS 3T3-L1 adipocytes, muscle and adipose tissue of mice were subjected to Western Blot analysis with phosphospecific antibodies to identify phosphorylation sites in IRS-1 following insulin treatment. Pharmacological inhibitors were used to determine the serine kinases involved in this phosphorylation. RESULTS In 3T3-L1 adipocytes, insulin promoted the phosphorylation of serine 307, 612 and 632 with Serine(612/632) more rapidly phosphorylated than Serine(307). Insulin-induced phosphorylation of Serine(307) was dependent on the activation of a PI 3-kinase/mTOR pathway. The phosphorylation of Serine(612/632) required the activation of the MAP kinase pathway following short-term insulin stimulation and activation of the PI 3-kinase/mTOR pathway following prolonged insulin stimulation. Phosphorylation of Serine(307) and Serine(632) occurred in vivo in skeletal muscle and white adipose tissue of mice injected with insulin and was dependent on the activation of mTOR. Moreover, inhibition of mTOR led to a persistent PI 3-kinase activation by insulin. CONCLUSION/INTERPRETATION Insulin-induced IRS-1 serine phosphorylation is a complex process involving different sites and kinases. This complexity could be physiologically important to accurately regulate insulin signalling. Abnormal phosphorylation of these serine residues in hyperinsulinaemic state could participate in the down-regulation of insulin signalling.
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Affiliation(s)
- P Gual
- INSERM U568 and IFR50, Faculté de Médecine, Nice Cedex 02, France
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Diaz de Delgado G, Briceno A, Gonzalez T. Layer assembly in alkaline-earth derivatives of unsaturated dicarboxylic acids. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302097507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Abstract
A genetic construction was carried out using the broad host range vector pKT230 and plasmid pMCG898, which encodes the Erwinia herbicola pyrroloquinoline quinone (PQQ) synthase, a gene involved in mineral phosphate solubilization (mps). The final construction was transformed and expressed in Escherichia coli MC1061, and the recombinant plasmids were transferred to Burkholderia cepacia IS-16 and Pseudomonas sp. PSS recipient cells by conjugation. Clones containing recombinant plasmids produced higher clearing halos in plates with insoluble phosphate as the unique (P) source, in comparison with those of strains without plasmids, demonstrating the heterologous expression of the E. herbicola gene in the recipient strains. This genetic manipulation allowed the increase in mps ability of both strains, enhancing their potentialities as growth promoters of agricultural crops. These results represent the first report on the application of the recombinant DNA methodology for the obtaining of improved phosphate solubilizing ability from rhizobacterial strains for biofertilization purposes.
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Affiliation(s)
- H Rodríguez
- Department of Microbiology, Cuban Research Institute on Sugarcane By-Products (ICIDCA), P.O. Box 4026, CP 11 000, Havana, Cuba.
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Leong SR, DeForge L, Presta L, Gonzalez T, Fan A, Reichert M, Chuntharapai A, Kim KJ, Tumas DB, Lee WP, Gribling P, Snedecor B, Chen H, Hsei V, Schoenhoff M, Hale V, Deveney J, Koumenis I, Shahrokh Z, McKay P, Galan W, Wagner B, Narindray D, Hébert C, Zapata G. Adapting pharmacokinetic properties of a humanized anti-interleukin-8 antibody for therapeutic applications using site-specific pegylation. Cytokine 2001; 16:106-19. [PMID: 11741351 DOI: 10.1006/cyto.2001.0936] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A neutralizing anti-interleukin-(IL-)8 monoclonal antibody was humanized by grafting the complementary determining regions onto the human IgG framework. Subsequent alanine scanning mutagenesis and phage display enabled the production of an affinity matured antibody with a >100-fold improvement in IL-8 binding. Antibody fragments can be efficiently produced in Escherichia coli but have the limitation of rapid clearance rates in vivo. The Fab' fragment of the antibody was therefore modified with polyethylene glycol (PEG) in order to obtain a more desirable pharmacokinetic profile. PEG (5-40 kDa) was site-specifically conjugated to the Fab' via the single free cysteine residue in the hinge region. In vitro binding and bioassays showed little or no loss of activity. The pharmacokinetic profiles of the 20 kDa, 30 kDa, 40 kDa, and 40 kDa branched PEG-Fab' molecules were evaluated in rabbits. Relative to the native Fab', the clearance rates of the PEGylated molecules were decreased by 44-175-fold. In a rabbit ear model of ischemia/reperfusion injury, all PEGylated Fab' molecules were as efficacious in reducing oedema as the original monoclonal antibody. These studies demonstrate that it is possible to customize the pharmacokinetic properties of a Fab' while retaining its antigen binding activity.
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Affiliation(s)
- S R Leong
- Department of Immunology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA.
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Rodríguez H, Rossolini GM, Gonzalez T, Li J, Glick BR. Isolation of a gene from Burkholderia cepacia IS-16 encoding a protein that facilitates phosphatase activity. Curr Microbiol 2000; 40:362-6. [PMID: 10827277 DOI: 10.1007/s002840010071] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
A genomic library from Burkholderia cepacia IS-16 was constructed in Escherichia coli by partial Sau3AI digestion of the chromosomal DNA, with the plasmid vector Bluescript SK. This library was screened for clones able to grow as green stained colonies on selective medium developed for detecting phosphatase-positive colonies. Three green-stained clones (pFS1, pFS2, and pFS3) carried recombinant plasmids harboring DNA inserts of 5.0, 8.0, and 0.9 kb, respectively. DNA hybridization experiments demonstrated the presence of overlapping DNA fragments in the three clones and that these three clones were all derived from Burkholderia cepacia IS-16 genomic DNA. DNA sequence analysis, together with polyacrylamide gels of proteins encoded by E. coli containing pFS3, suggested that the isolated 0. 9-kb DNA fragment encodes the functional portion of a phosphate transport protein.
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Affiliation(s)
- H Rodríguez
- Department of Microbiology, Cuban Research Institute on Sugarcane By-Products, Havana, Cuba
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Alvarez F, Ciocca M, Cañero-Velasco C, Ramonet M, de Davila MT, Cuarterolo M, Gonzalez T, Jara-Vega P, Camarena C, Brochu P, Drut R, Alvarez E. Short-term cyclosporine induces a remission of autoimmune hepatitis in children. J Hepatol 1999; 30:222-7. [PMID: 10068099 DOI: 10.1016/s0168-8278(99)80065-8] [Citation(s) in RCA: 155] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND/AIMS The current immunosuppressive treatment of patients with autoimmune hepatitis consists of prednisone and azathioprine. High doses of prednisone used to obtain the remission of the disease are associated with serious adverse effects. To avoid harmful consequences of prednisone therapy, we proposed to treat patients with oral cyclosporine to obtain the remission of the inflammatory process. METHODS This is a pilot, multinational, multicenter, clinical trial involving children with autoimmune hepatitis. Thirty-two children were recruited, who according to international criteria were considered as having definite autoimmune hepatitis. Cyclosporine alone was administered for 6 months, followed by combined low doses of prednisone and azathioprine for 1 month, after which cyclosporine was discontinued. Biochemical remission of the disease was established by the follow-up of serum transaminase activity levels. Growth parameters and adverse effects of the treatment were recorded. RESULTS Two patients were withdrawn from the study: one for non-compliance and the other for liver failure which did not improve with cyclosporine. Of the 30 remaining patients, 25 normalized alanine aminotransferase activity levels by 6 months and all the patients by 1 year of treatment. Z-scores for height showed a trend towards improvement during treatment. Adverse effects of cyclosporine were mild and disappeared during weaning off the medication. CONCLUSIONS Cyclosporine induced the biochemical remission of the hepatic inflammatory/necrotic process in children with autoimmune hepatitis, with few and well-tolerated adverse effects.
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Affiliation(s)
- F Alvarez
- Gastroenterology Unit, Hôpital Sainte-Justine, Université de Montréal, Quebec, Canada
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Gonzalez T, Cruz A, Balsa A, Jiménez C, Selgas R, Miguel JL, Gijón J. Erosive azotemic osteoarthropathy of the hands in chronic ambulatory peritoneal dialysis and hemodialysis. Clin Exp Rheumatol 1997; 15:367-71. [PMID: 9272296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE We studied the prevalence and significance of erosive azotemic osteoarthropathy (EAO) and its relationship with other osteoarticular abnormalities of dialysis-associated arthropathy (DAA). METHODS 112 patients undergoing maintenance dialysis were studied: 63 hemodialysis (HD) and 49 continuous ambulatory peritoneal dialysis (CAPD). X-ray of the hands, shoulders, pelvis and cervical spine were examined for destructive spondyloarthropathy (SDA), bone cysts (BC), EAO and subperiosteal resorption. Beta 2-microglobulin (beta 2-m) and PTH were also measured. RESULTS Fifteen patients (13%) had EAO, usually in several joints of the hands, DIPs being the most frequently affected. Both patients on HD and those on CAPD had EAO, although the prevalence was higher in the HD group, 12 (19%) vs. 3 (6%). Patients with EAO were older (p < 0.05) and had more carpal tunnel syndrome (CTS) (p < 0.05) and BC (p < 0.01). Only 3 out of 15 patients with EAO had severe secondary hyperparathyroidism (sHPTH) (PTH > 500), while 9/15 had neither radiologic nor laboratory evidence of sHPTH. No differences were found regarding the duration of dialysis, or beta 2-m or PTH level. CONCLUSION EAO is not related to sHPTH and should be included within the spectrum of the clinical manifestations of DAA. Due to its location and radiologic picture, it is possible that etiologic factors leading to primary osteoarthritis may play a role in the development and evolution of EAO.
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Affiliation(s)
- T Gonzalez
- Rheumatology Unit, Hospital Universitario La Paz, Universidad Autónoma de Madrid, Spain
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Cantero A, Sancha JL, Flores JM, Rodriguez A, Gonzalez T. Histopathological changes in the reproductive organs of Manchego ewes grazing on lucerne. Zentralbl Veterinarmed A 1996; 43:325-30. [PMID: 8818297 DOI: 10.1111/j.1439-0442.1996.tb00459.x] [Citation(s) in RCA: 15] [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] [Indexed: 02/02/2023]
Abstract
The effects of prolonged exposure to phyto-oestrogens (coumestrol) on the morphology of the reproductive organs of ewes were studied in 28 lucerne-grazing animals, and compared with 28 control ewes given a standard coumestrol-free diet. The anatomical studies showed that 43% of the ewes fed lucerne displayed macroscopic changes within the genital tract, of which the uterine alterations were especially prominent. The microscopic examination of the test group ewes identified specific histopathological features of the uterus and cervix. A greater than normal development of the cervical folds was observed, as well as cystic formations of different sizes whose content was eosinophilic. In the rest of the uterus, more glandular activity was detected in the lucerne-grazing group than in the control ewes, although cystic formations were not seen.
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Affiliation(s)
- A Cantero
- State Agrarian Investigation Service of the Community of Madrid, El Encin Farm, Spain
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Esmatjes E, Castell C, Gonzalez T, Tresserras R, Lloveras G. Epidemiology of renal involvement in type II diabetics (NIDDM) in Catalonia. The Catalan Diabetic Nephropathy Study Group. Diabetes Res Clin Pract 1996; 32:157-63. [PMID: 8858204 DOI: 10.1016/0168-8227(96)01256-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The aim of this cross-sectional study was to establish the prevalence of renal involvement and to identify associations with its most important possible risk factors in a group of patients with Type II diabetes mellitus, representative of the population living in Catalonia. One thousand two hundred and three patients (47% males, mean age: 61 +/- 6 years, diabetes duration 9 +/- 6 years) were studied. Overnight urine samples were collected to determine urinary albumin excretion (UAE). If UAE was > 15 micrograms/min, a new 24-h urine collection for UAE measurement to establish the existence of microalbuminuria (20-200 micrograms/min) or macroalbuminuria (> 200 micrograms/min) was obtained. Clinic and metabolic evaluations were also performed. The prevalence (%) of microalbuminuria, macroalbuminuria and hypertension were, respectively, 23. 1, 5.4 and 42. In comparison with normoalbuminurics, patients with microalbuminuria were predominately male (P < 0.03), with a significantly higher systolic (P < 0.001) and diastolic (P < 0.001) blood pressure and body mass index (P < 0.001). The prevalence of smokers (former + current) was higher in patients with microalbuminuria (43 vs 32%, P < 0.025). Moreover, patients with nephropathy had more prevalence of retinopathy (P < 0.001), neuropathy (P < 0.001), peripheral angiopathy (P < 0.001) and coronary disease (P < 0.001). The prevalence of microalbuminuria in Type II diabetes in Catalonia is similar to that observed in other european countries. The existence of microalbuminuria is associated with several diabetic complications, as well as tobacco consumption and obesity.
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Affiliation(s)
- E Esmatjes
- Catalan Society of Diabetes, Barcelona, Spain
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Edwards CP, Champe M, Gonzalez T, Wessinger ME, Spencer SA, Presta LG, Berman PW, Bodary SC. Identification of amino acids in the CD11a I-domain important for binding of the leukocyte function-associated antigen-1 (LFA-1) to intercellular adhesion molecule-1 (ICAM-1). J Biol Chem 1995; 270:12635-40. [PMID: 7539005 DOI: 10.1074/jbc.270.21.12635] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.0] [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: 01/25/2023] Open
Abstract
Leukocyte function-associated antigen-1 (LFA-1) is a cell surface adhesion receptor for intercellular adhesion molecule-1, -2, and -3 (ICAM-1, -2, -3). Using human/murine chimeras of the I-domain of the LFA-1 alpha subunit (CD11a), we recently identified the epitopes recognized by eight monoclonal antibodies against CD11a that inhibit LFA-1 binding to ICAM-1. In this report, we determined that replacement of the entire human I-domain with the entire murine I-domain in CD11a completely abrogated LFA-1 binding to human ICAM-1 without affecting the gross conformation or heterodimer formation of LFA-1, as assayed by antibody binding. In order to assess which residues of the I-domain are responsible for binding to ICAM-1, we tested the ability of a panel of human/murine I-domain chimeras to bind to human ICAM-1. When complexed with CD18, all CD11a chimeras bound ICAM-1 at levels comparable to wild-type CD11a/CD18, indicating that the residues in these chimeras which differ in human and murine I-domains may not play a critical role in LFA-1 binding to ICAM-1. A series of point mutations of residues that are conserved between murine and human CD11a I-domains, as well as between CD11b and CD11c, were also generated. Substitution of alanine for proline at position 192 in the human CD11a I-domain abrogated adhesion of LFA-1 to ICAM-1. Antibody binding data suggested that this was due to conformational changes within the I-domain. Mutation of the aspartic acids at positions 137 and 239 to either alanine or lysine completely destroyed ICAM-1 binding. The conformation of LFA-1 alanine mutants was not significantly altered. This suggests that these aspartic acids are required for binding of human LFA-1 to human ICAM-1.
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Affiliation(s)
- C P Edwards
- Department of Immunology, Genentech, Inc., South San Francisco, California 94080, USA
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Eigenbrot C, Gonzalez T, Mayeda J, Carter P, Werther W, Hotaling T, Fox J, Kessler J. X-ray structures of fragments from binding and nonbinding versions of a humanized anti-CD18 antibody: structural indications of the key role of VH residues 59 to 65. Proteins 1994; 18:49-62. [PMID: 7908437 DOI: 10.1002/prot.340180107] [Citation(s) in RCA: 45] [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] [Indexed: 01/27/2023]
Abstract
X-ray crystal structures of fragments from two different humanized anti-CD18 antibodies are reported. The Fv fragment of the nonbinding version has been refined in space group C2 with a = 64.2 A, b = 61.3 A, c = 51.8 A, and beta = 99 degrees to an R-value of 18.0% at 1.9 A, and the Fab fragment of the tight-binding version has been refined in space group P3 with a = 101. A and c = 45.5 A to an R-value of 17.8% at 3.0 A resolution. The very large difference in their binding affinity (> 1000-fold) is attributed to large and local structural differences in the C-terminal part of CDR-H2, and from this we conclude there is direct contact between this region and antigen when they combine. X-ray structures of antibody-antigen complexes available in the literature have yet to show this part of CDR-H2 in contact with antigen, despite its hypervariable sequence. Implications of this result for antibody humanization are discussed.
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Affiliation(s)
- C Eigenbrot
- Department of Protein Engineering, Genentech, Inc., South San Francisco, California 94080-4990
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Novick GE, Gonzalez T, Garrison J, Novick CC, Batzer MA, Deininger PL, Herrera RJ. The use of polymorphic Alu insertions in human DNA fingerprinting. EXS 1993; 67:283-91. [PMID: 8400699 DOI: 10.1007/978-3-0348-8583-6_26] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
We have characterized several Human Specific (HS) Alu insertions as either dimorphic (TPA25, PV92, APO), slightly dimorphic (C2N4 and C4N4) or monomorphic (C3N1, C4N6, C4N2, C4N5, C4N8) based on studies of Caucasian, Asian, American Black and African Black populations. Our approach is based upon: 1) PCR amplification using primers complementary to the unique DNA sequences that flank the site of insertion of the different Alu elements studied; 2) gel electrophoresis and scoring according to the presence or absence of an Alu insertion in one or both homologous chromosomes; 3) allele frequencies determined by gene counting and compared to Hardy-Weinberg expectations. Our DNA fingerprinting procedure using PCR amplification of diallelic polymorphic (dimorphic) Human Specific Alu insertions, may be used as a tool for genetic mapping, to characterize populations, study human migrational patterns, and track the inheritance of human genetic disorders.
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Affiliation(s)
- G E Novick
- Department of Biological Sciences, Florida International University, Miami 33199
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Balansard P, Poggi JN, Gonzalez T, Michel C, Baralla A, Aidibe A, Raufast D. [Cardiac output studied by a non invasive method in hypertensive patients]. Arch Mal Coeur Vaiss 1992; 85:1075-8. [PMID: 1482236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We measured by thoracic bioimpedance (BoMed, NCCOM3-R7) non invasive cardiac index (CI), stroke index (SI) and systemic vascular resistance index (SVRI) in 48 hypertensive patients (OMS) compared to 30 normotensive. The mean arterial pressure (MAP) and the SVRI were significantly higher in the hypertensive group while the CI are significantly lower, as that was shown in previous invasive studies. We found an inverse correlation between age and CI (r = -.30, p < or = .05) in relation with a negative correlation between SI and age (r = -.35, p < or = .05) and no correlation between heart rate and age. Furthermore we divided normotensive and hypertensive patients in three groups of CI (low CI < 2.8 l/min/m2, 2.8 < or = normal CI < or = 4.2 l/min/m2, high CI > 4.2 l/min/m2) and in three groups of SVRI (low SVRI < 1660 Flohms/m2, 1660 < or = normal SVRI < or = 2580 Flohms/m2, high SVRI > 2580 Flohms/m2). Despite CI diminution in hypertension, high CI percentage's was the same in normotensive and hypertensive patients. In conclusion, these results confirm previous studies by using a simple, easy, non invasive and reproducible method.
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Sobel DF, Larsen M, Zyroff J, Seat S, Deblois C, Garver P, Gonzalez T, Guy J, Kleiman S, Knowles H. Buffing up MR images. AJNR Am J Neuroradiol 1992; 13:301-2. [PMID: 1595465 PMCID: PMC8331765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- D F Sobel
- Division of Neuroradiology, Scripps Clinic and Research Foundation, La Jolla, CA 92037
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