1
|
Rauniyar N, Togle AJ, Ronci RA, Reyes D, Han X. Characterization of PEGylation sites in Neulasta and a biosimilar candidate with a combined fragmentation strategy in mass spectrometry analysis. J Mass Spectrom 2024; 59:e5017. [PMID: 38517094 DOI: 10.1002/jms.5017] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 02/08/2024] [Accepted: 02/27/2024] [Indexed: 03/23/2024]
Abstract
In the development of biosimilar products to Neulasta, it is essential to determine the intact molecular mass and confirm precise PEGylation sites. In this study, we applied a combination of techniques, including post-column addition of triethylamine in reversed-phase liquid chromatography-mass spectrometry (RPLC-MS) to determine the intact molecular mass, and in-source fragmentation (ISF) and higher-energy collision dissociation-tandem mass spectrometry (HCD-MS/MS) to identify the PEGylation site. Our results show that both the pegfilgrastim biosimilar candidate and Neulasta lots are mono-PEGylated at the N-terminal end. Furthermore, we show that the combined ISF and HCD-MS/MS method can be used for identifying the PEGylation sites in the diPEGylated variant of pegfilgrastim. The diPEGylated variant has modification sites at the N-terminal end and a lysine at position 35 in the protein sequence.
Collapse
Affiliation(s)
| | | | | | - Diego Reyes
- Tanvex BioPharma USA, Inc., San Diego, California, USA
| | - Xuemei Han
- Tanvex BioPharma USA, Inc., San Diego, California, USA
| |
Collapse
|
2
|
Latorre G, Silva F, Montero I, Bustamante M, Dukes E, Uribe J, Corsi Sotelo O, Reyes D, Fuentes-López E, Pizarro M, Medel P, Torres J, Roa JC, Pizarro S, Achurra P, Donoso A, Wichmann I, Corvalán AH, Chahuan J, Candia R, Agüero C, Gonzalez R, Vargas JI, Espino A, Camargo MC, Shah SC, Riquelme A. Comparison of OLGA and OLGIM as predictors of gastric cancer in a Latin American population: the ECHOS Study. Gut 2023:gutjnl-2023-331059. [PMID: 38148138 DOI: 10.1136/gutjnl-2023-331059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 12/15/2023] [Indexed: 12/28/2023]
Affiliation(s)
- Gonzalo Latorre
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Felipe Silva
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Isabella Montero
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Miguel Bustamante
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Eitan Dukes
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Javier Uribe
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Oscar Corsi Sotelo
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Diego Reyes
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Eduardo Fuentes-López
- Department of Health Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Margarita Pizarro
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Patricio Medel
- Pharmacology and Toxicology Program, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Javiera Torres
- Department of Pathology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Juan Carlos Roa
- Department of Pathology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro para la Prevención y el Control del Cáncer (CECAN), Santiago, Chile
| | - Sebastián Pizarro
- Department of Pathology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pablo Achurra
- Department of Digestive Surgery, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Andrés Donoso
- Department of Digestive Surgery, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ignacio Wichmann
- Department of Obstetrics, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Division of Oncology, Department of Medicine, Stanford University School of Medicine, Stanford, California, USA
- Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alejandro H Corvalán
- Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Católica de Chile, Santiago, Chile
- Department of Hematology & Oncology, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Javier Chahuan
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Roberto Candia
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carlos Agüero
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Robinson Gonzalez
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jose Ignacio Vargas
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alberto Espino
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - M Constanza Camargo
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Shailja C Shah
- Gastroenterology Section, Veterans Affairs, San Diego Healthcare System, San Diego, California, USA
- Division of Gastroenterology, University of California San Diego, La Jolla, California, USA
| | - Arnoldo Riquelme
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro para la Prevención y el Control del Cáncer (CECAN), Santiago, Chile
| |
Collapse
|
3
|
Díaz LA, García-Salum T, Fuentes-López E, Reyes D, Ortiz J, Chahuan J, Levican J, Almonacid LI, Valenzuela GH, Serrano E, Budnik S, Gandara V, Gallardo A, Seydewitz MF, Ferrés M, Cofré C, Álvarez M, Pavez C, Candia R, Monrroy H, Espino A, Rada G, Ortiz L, Valderrama S, Salinas E, Toro A, Ortega M, Pizarro M, Medina RA, Riquelme A. High prevalence of SARS-CoV-2 detection and prolonged viral shedding in stools: A systematic review and cohort study. Gastroenterología y Hepatología (English Edition) 2022; 45. [PMCID: PMC9574026 DOI: 10.1016/j.gastre.2021.12.006] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Objectives Methods Results Conclusions
Collapse
Affiliation(s)
- Luis Antonio Díaz
- Department of Gastroenterology, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Tamara García-Salum
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Eduardo Fuentes-López
- Department of Health Sciences, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Diego Reyes
- Department of Internal Medicine, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Javier Ortiz
- Department of Internal Medicine, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Javier Chahuan
- Department of Gastroenterology, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jorge Levican
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Leonardo I. Almonacid
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gonzalo H. Valenzuela
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Eileen Serrano
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Sigall Budnik
- School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Vicente Gandara
- School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Andrea Gallardo
- School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Marcela Ferrés
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Colomba Cofré
- Department of Pediatric Gastroenterology and Nutrition, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Manuel Álvarez
- Department of Gastroenterology, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carolina Pavez
- Department of Gastroenterology, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Roberto Candia
- Department of Gastroenterology, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Hugo Monrroy
- Department of Gastroenterology, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alberto Espino
- Department of Gastroenterology, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gabriel Rada
- Department of Internal Medicine, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile,Evidence Center, Cochrane Chile Associated Center, Pontificia Universidad Católica de Chile, Santiago, Chile,Epistemonikos Foundation, Santiago, Chile
| | - Luis Ortiz
- Evidence Center, Cochrane Chile Associated Center, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Sebastián Valderrama
- Department of Internal Medicine, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Erick Salinas
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Adriana Toro
- Pediatric Service, Clínica UC San Carlos, Red Salud UC Christus, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Marcos Ortega
- Department of Intensive Care Medicine, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile,Department of Respiratory Medicine, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Margarita Pizarro
- Department of Gastroenterology, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rafael A. Medina
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile,Corresponding authors
| | - Arnoldo Riquelme
- Department of Gastroenterology, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile,Department of Health Sciences, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile,Corresponding authors
| |
Collapse
|
4
|
Díaz LA, García-Salum T, Fuentes-López E, Reyes D, Ortiz J, Chahuan J, Levican J, Almonacid LI, Valenzuela GH, Serrano E, Budnik S, Gandara V, Gallardo A, Seydewitz MF, Ferrés M, Cofré C, Álvarez M, Pavez C, Candia R, Monrroy H, Espino A, Rada G, Ortiz L, Valderrama S, Salinas E, Toro A, Ortega M, Pizarro M, Medina RA, Riquelme A. High prevalence of SARS-CoV-2 detection and prolonged viral shedding in stools: A Systematic Review and Cohort Study. Gastroenterología y Hepatología 2022; 45:593-604. [PMID: 35077722 PMCID: PMC8783395 DOI: 10.1016/j.gastrohep.2021.12.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 11/02/2021] [Accepted: 12/29/2021] [Indexed: 10/25/2022]
|
5
|
Reyes D, Ortiz J, Fuentes-López E, Budnik S, Gándara V, Gallardo A, Seydewitz MF, Candia R, Vargas JI, Rollan MP, Godoy J, Rollan A, Mansilla R, Arenas A, Chahuán J, Espino A, Pizarro M, Riquelme A. Quadruple therapies are superior to standard triple therapy for Helicobacter pylori first-line eradication in Chile. Gastroenterol Hepatol 2021; 45:515-523. [PMID: 34890721 DOI: 10.1016/j.gastrohep.2021.11.010] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/22/2021] [Accepted: 11/29/2021] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Helicobacter pylori infection affects approximately 70% of the Chilean population. It is a public health problem whose eradication treatment is part of the explicit health guarantees in Chile. OBJECTIVES Characterize the most widely used H. pylori first-line eradication therapies in our environment and evaluate their efficacy. METHODS A retrospective observational study was carried out where, in patients with certified H. pylori infection, the eradication therapy indicated by the treating physician, its efficacy, adherence and adverse effects, in addition to the eradication certification method used, were evaluated. RESULTS 242 patients and 4 main therapies were analyzed: standard triple therapy, dual therapy, concomitant therapy, and bismuth quadruple therapy. Eradication rates of 81.9% (95% CI 74.44-87.63), 88.5% (95% CI 73.13-95.67), 93.7% (95% CI 78.07-98.44) and 97.6% (95% CI 84.81-99.67) were observed respectively, with concomitant therapy (RR: 1.14; 95% CI 1.01-1.29; p=.028) and quadruple therapy with bismuth (RR: 1.19; 95% CI 1.09-1.31; p<.001) being significantly more effective than standard triple therapy. Regarding the rate of reported adverse effects, it was 58.5% (95% CI 50.66-65.92), 35.4% (95% CI 24.6-48.11), 22.9% (95% CI 81-37.14) and 63.4% (95% CI 47.8-76.64), having the dual and concomitant therapy significantly fewer adverse effects compared with standard therapy. CONCLUSIONS Quadruple therapies are superior to standard triple therapy and should be considered as first-line treatment in Chile. Dual therapy is promising. More studies will be required to determine which therapies are most cost-effective.
Collapse
Affiliation(s)
- Diego Reyes
- Departamento de Medicina Interna, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
| | - Javier Ortiz
- Departamento de Medicina Interna, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Eduardo Fuentes-López
- Departamento de Ciencias de la Salud, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Sigall Budnik
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Vicente Gándara
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Andrea Gallardo
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - María Francisca Seydewitz
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Roberto Candia
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José Ignacio Vargas
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Division of Gastroenterology, Department of Medicine, Saint Michael's Hospital, University of Toronto, Toronto, Canadá
| | - María Paz Rollan
- Facultad de Medicina, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - Javiera Godoy
- Facultad de Medicina, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - Antonio Rollan
- Departamento de Gastroenterología, Clínica Alemana, Santiago, Chile
| | - Rodrigo Mansilla
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Departamento de Gastroenterología, Hospital de Puerto Montt, Puerto Montt, Chile
| | - Alex Arenas
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; División de Gastroenterología, Departamento de Medicina, Complejo Asistencial Dr. Sótero del Río, Santiago, Chile
| | - Javier Chahuán
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alberto Espino
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Margarita Pizarro
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Arnoldo Riquelme
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Departamento de Ciencias de la Salud, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
6
|
Saagi R, Arnell M, Reyes D, Wärff C, Ahlström M, Jeppsson U. Modelling temperature dynamics in sewer systems - comparing mechanistic and conceptual modelling approaches. Water Sci Technol 2021; 84:2335-2352. [PMID: 34810315 DOI: 10.2166/wst.2021.425] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The vast majority of the energy consumed for urban water services is used to heat tap water. Heat recovery from wastewater is consequently an area of rapidly growing concern, both in research and by commercial interest, promoting the path towards a circular economy. To facilitate a system-wide evaluation of heat recovery from wastewater, this paper compares two one-dimensional models (mechanistic and conceptual) that can describe wastewater temperature dynamics in sewer pipe systems. The models are applied to successfully predict downstream wastewater temperature for sewer stretches in two Swedish cities (Linköping and Malmö). The root mean squared errors for the mechanistic model (Linköping Dataset1 - 0.33 °C; Linköping Dataset2 - 0.28 °C; Malmö - 0.40 °C) and the conceptual model (Linköping Dataset1 - 0.32 °C; Linköping Dataset2 - 0.20 °C; Malmö - 0.44 °C) indicate that both models have similar predictive capabilities, encouraging the use of conceptual models to reduce data requirements and model calibration efforts. Both models are freely distributed and can be easily integrated with wastewater generation and treatment models to facilitate system-wide wastewater temperature dynamics analysis.
Collapse
Affiliation(s)
- R Saagi
- Division of Industrial Electrical Engineering and Automation (IEA), Department of Biomedical Engineering, Lund University, P.O. Box 118, SE-22100 Lund, Sweden E-mail:
| | - M Arnell
- Division of Industrial Electrical Engineering and Automation (IEA), Department of Biomedical Engineering, Lund University, P.O. Box 118, SE-22100 Lund, Sweden E-mail: ; RISE Research Institutes of Sweden, Gjuterigatan 1D, SE-58273 Linköping, Sweden
| | - D Reyes
- Division of Industrial Electrical Engineering and Automation (IEA), Department of Biomedical Engineering, Lund University, P.O. Box 118, SE-22100 Lund, Sweden E-mail:
| | - C Wärff
- Division of Industrial Electrical Engineering and Automation (IEA), Department of Biomedical Engineering, Lund University, P.O. Box 118, SE-22100 Lund, Sweden E-mail: ; RISE Research Institutes of Sweden, Gjuterigatan 1D, SE-58273 Linköping, Sweden
| | - M Ahlström
- RISE Research Institutes of Sweden, Gjuterigatan 1D, SE-58273 Linköping, Sweden
| | - U Jeppsson
- Division of Industrial Electrical Engineering and Automation (IEA), Department of Biomedical Engineering, Lund University, P.O. Box 118, SE-22100 Lund, Sweden E-mail:
| |
Collapse
|
7
|
Cathalifaud D, Sandoval J, Cerda T, Reyes D, Sepúlveda RA. Síndrome hemolítico urémico asociado a toxina Shiga con hipocomplementemia en edad atípica. Caso clínico. Rev Med Chil 2021; 149:1668-1672. [DOI: 10.4067/s0034-98872021001101668] [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] [Received: 11/28/2020] [Accepted: 11/30/2021] [Indexed: 11/17/2022]
|
8
|
Kyonen M, Fica A, Rivas C, Torres F, Reyes D, Scheinost C. Adverse events associated with antimicrobial compounds in a general hospital in Chile. Rev Med Chil 2021; 149:1119-1128. [DOI: 10.4067/s0034-98872021000801119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 05/19/2021] [Indexed: 11/17/2022]
|
9
|
Adenikinju O, Vianna S, Rubin D, Ujueta F, Money B, Reynolds H, Patel M, Reyes D, Szomstein KB, Pirea A, Watchmaker J, Ayad M, Zybulewski A, Olivieri B, Beasly R. Abstract No. 12 Stay alive: drug-eluting versus bare-metal stent mortality rates in a high-volume vascular center. J Vasc Interv Radiol 2021. [DOI: 10.1016/j.jvir.2021.03.424] [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
|
10
|
Ciampi E, Uribe-San-Martin R, Soler B, Molnar K, Reyes D, Keller K, Carcamo C. Prevalence of comorbidities in Multiple Sclerosis and impact on physical disability according to disease phenotypes. Mult Scler Relat Disord 2020; 46:102565. [PMID: 33039942 DOI: 10.1016/j.msard.2020.102565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/13/2020] [Accepted: 10/04/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND Comorbidities are prevalent among Multiple Sclerosis (MS) patients. Few studies have characterized their prevalence and impact in Latin American populations. OBJECTIVE We aim to assess the prevalence of comorbidities and their impact on the risk of physical disability across different MS phenotypes. METHODS Cross-sectional multicenter study of patients under regular clinical care at the Programa de Esclerosis Múltiple UC and Hospital Dr. Sótero del Río in Chile. Prevalence of comorbidities was estimated from the retrospective assessment of electronic medical charts. Disease phenotypes were categorized into two groups: clinically isolated syndrome/relapsing-remitting (inflammatory group) and primary/secondary progressive MS patients (progressive group). A multivariable analysis using binary logistic regression for assessing the risk of EDSS ≥ 6.0 in each group was performed. RESULTS A total of 453 patients was included, 71% female, mean age at onset 31 years, mean disease duration 10 years, and median EDSS 2.0 (range 0-10). In the whole sample, most prevalent comorbidities were ever-smoking (42.2%), depression/anxiety (34.9%), thyroid disease (15.7%), hypertension (11.3%) and insulin resistance/type 2 diabetes mellitus (11.0%). When assessing the risk of EDSS ≥ 6, in the inflammatory group (N = 366), age at onset (OR 1.06, 95%CI(1.02-1.11), p = 0.008), disease duration (OR 1.06, 95%CI(1.00-1.12), p = 0.039) and epilepsy comorbidity (OR 5.36, 95%CI(1.33-21.5), p = 0.018) were associated with a higher risk of disability. In the progressive group (N = 87), disease duration was a risk factor (OR 1.08 95%CI(1.02-1.16), p = 0.014), while shorter diagnostic delay (OR 0.91 95%CI(0.85-0.99), p = 0.025) and insulin resistance/type 2 diabetes mellitus comorbidity were protective factors (OR 0.18 95%CI(0.04-0.83), p = 0.028), 72% of these patients were receiving metformin. CONCLUSIONS Comorbidities are common across different MS disease phenotypes. Epilepsy seems particularly related with a higher risk of physical disability in relapsing-remitting patients, while the role of insulin resistance/type 2 diabetes mellitus or the impact of metformin use as a protective factor should be further studied. Prospective and larger studies are still needed in order to assess the real impact of comorbidities and their management in MS outcomes.
Collapse
Affiliation(s)
- Ethel Ciampi
- Neurology, Pontificia Universidad Católica de Chile, Santiago, Chile; Neurology, Hospital Sotero del Rio, Santiago, Chile; Neurosurgery, Pontificia Universidad Católica de Chile and Hospital Dr. Sótero del Río, Santiago, Chile.
| | - Reinaldo Uribe-San-Martin
- Neurology, Pontificia Universidad Católica de Chile, Santiago, Chile; Neurology, Hospital Sotero del Rio, Santiago, Chile; Neurosurgery, Pontificia Universidad Católica de Chile and Hospital Dr. Sótero del Río, Santiago, Chile
| | - Bernardita Soler
- Neurology, Pontificia Universidad Católica de Chile, Santiago, Chile; Neurology, Hospital Sotero del Rio, Santiago, Chile; Neurosurgery, Pontificia Universidad Católica de Chile and Hospital Dr. Sótero del Río, Santiago, Chile
| | - Karolyn Molnar
- Neurology, Pontificia Universidad Católica de Chile, Santiago, Chile; Neurosurgery, Pontificia Universidad Católica de Chile and Hospital Dr. Sótero del Río, Santiago, Chile
| | - Diego Reyes
- Neurology, Pontificia Universidad Católica de Chile, Santiago, Chile; Neurosurgery, Pontificia Universidad Católica de Chile and Hospital Dr. Sótero del Río, Santiago, Chile
| | - Karina Keller
- Neurology, Pontificia Universidad Católica de Chile, Santiago, Chile; Neurosurgery, Pontificia Universidad Católica de Chile and Hospital Dr. Sótero del Río, Santiago, Chile
| | - Claudia Carcamo
- Neurology, Pontificia Universidad Católica de Chile, Santiago, Chile; Neurosurgery, Pontificia Universidad Católica de Chile and Hospital Dr. Sótero del Río, Santiago, Chile
| |
Collapse
|
11
|
Ciampi E, Uribe-San-Martin R, Cárcamo C, Cruz JP, Reyes A, Reyes D, Pinto C, Vásquez M, Burgos RA, Hancke J. Efficacy of andrographolide in not active progressive multiple sclerosis: a prospective exploratory double-blind, parallel-group, randomized, placebo-controlled trial. BMC Neurol 2020; 20:173. [PMID: 32380977 PMCID: PMC7203851 DOI: 10.1186/s12883-020-01745-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 03/05/2020] [Accepted: 04/23/2020] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Multiple sclerosis (MS) is a chronic immune mediated disease and the progressive phase appears to have significant neurodegenerative mechanisms. The classification of the course of progressive MS (PMS) has been re-organized into categories of active vs. not active inflammatory disease and the presence vs. absence of gradual disease progression. Clinical trial experience to date in PMS with anti-inflammatory medications has shown limited effect. Andrographolide is a new class of anti-inflammatory agent, that has been proposed as a potential drug for autoimmune disorders, including MS. In the present trial, we perform an exploratory pilot study on the efficacy and safety of andrographolide (AP) compared to placebo in not active PMS. METHODS A pilot clinical trial using 140 mg oral AP or placebo twice daily for 24 months in patients with not active primary or secondary progressive MS was conducted. The primary efficacy endpoint was the mean percentage brain volume change (mPBVC). Secondary efficacy endpoints included 3-month confirmed disability progression (3-CDP) and mean EDSS change. RESULTS Forty-four patients were randomized: 23 were assigned to the AP group, and 21 were assigned to the placebo group. The median baseline EDSS of both groups was 6.0. Annualized mPBVC was - 0.679% for the AP group and - 1.069% for the placebo group (mean difference: -0.39; 95% CI [- 0.836-0.055], p = 0.08, relative reduction: 36.5%). In the AP group, 30% had 3-CDP compared to 41% in the placebo group (HR: 0.596; 95% CI [0.200-1.777], p = 0.06). The mean EDSS change was - 0.025 in the AP group and + 0.352 in the placebo group (mean difference: 0.63, p = 0.042). Adverse events related to AP were mild rash and dysgeusia. CONCLUSIONS AP was well tolerated and showed a potential effect in reducing brain atrophy and disability progression, that need to be further evaluated in a larger clinical trial. TRIAL REGISTRATION ClinicalTrials.gov NCT02273635 retrospectively registered on October 24th, 2014.
Collapse
Affiliation(s)
- Ethel Ciampi
- Neurology Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay, 362, 5° floor, Santiago, Chile. .,Neurology, Hospital Dr. Sótero del Río, Av. Concha y Toro, 3459, Santiago, Chile.
| | - Reinaldo Uribe-San-Martin
- Neurology Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay, 362, 5° floor, Santiago, Chile.,Neurology, Hospital Dr. Sótero del Río, Av. Concha y Toro, 3459, Santiago, Chile
| | - Claudia Cárcamo
- Neurology Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay, 362, 5° floor, Santiago, Chile.
| | - Juan Pablo Cruz
- Radiology, Pontificia Universidad Católica de Chile, Diagonal Paraguay, 362, 5° floor, Santiago, Chile
| | - Ana Reyes
- Neurology Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay, 362, 5° floor, Santiago, Chile
| | - Diego Reyes
- Neurology Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay, 362, 5° floor, Santiago, Chile
| | - Carmen Pinto
- Neurology Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay, 362, 5° floor, Santiago, Chile
| | - Macarena Vásquez
- Neurology Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Diagonal Paraguay, 362, 5° floor, Santiago, Chile
| | - Rafael A Burgos
- Pharmacology and Morphophysiology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Independencia, 613, Valdivia, Chile
| | - Juan Hancke
- Pharmacology and Morphophysiology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Independencia, 613, Valdivia, Chile
| |
Collapse
|
12
|
Reyes D, Isbej L, Uribe J, Ruz C, Pizarro M, Walker R, Pérez-Cruz P, Maldonado A, Robles C, Latorre G, Ivanovic-Zuvic D, Figueroa C, González A, Cotoras P, Núñez C, Labarca J, Riquelme A. [Educational impact after 10 years of implementation of a portfolio for undergraduate medical students]. Rev Med Chil 2020; 147:790-798. [PMID: 31859833 DOI: 10.4067/s0034-98872019000600790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 07/08/2019] [Indexed: 11/17/2022]
Abstract
BACKGROUND A portfolio is a compilation of academic work that demonstrates student's knowledge, reflection and critical thinking. AIM To describe the development and implementation of an undergraduate portfolio in the School of Medicine at the Pontificia Universidad Católica de Chile, its temporal evolution and its educational impact after 10 years of experience. MATERIAL AND METHODS The development and implementation of a portfolio for 4th-year undergraduate medical student was analyzed. Its design, teaching and learning methodologies, results and perceptions of students and teachers were assessed. The educational impact was measured using Kirkpatrick's levels. RESULTS A total of 1,320 students participated between 2007 and 2017, supported by six teachers and 190 assistant-students. The portfolio included clinical cases, narrative medicine, palliative care and evidence-based medicine (EBM). The overall student's perception was positive, highlighting the development of critical analysis, clinical reasoning and professionalism. The delivery of feedback and learning assessment, allowed students to obtain excellent grades. There were only two cases of plagiarism reported. Fifteen EBM articles and two books with 52 narrative medicine essays were published. The greatest organizational impact of this teaching innovation, was that it evolved to become an established and continuous assessment instrument in 10 consecutive years. CONCLUSIONS This portfolio is a project with a high educational impact, with a favorable perception by students and tutors, excellent results related to grades, stimulating both scientific writing and reflective practice.
Collapse
Affiliation(s)
- Diego Reyes
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Lorena Isbej
- Escuela de Odontología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Javier Uribe
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Cristián Ruz
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Margarita Pizarro
- Departamento de Gastroenterología, Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rosa Walker
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pedro Pérez-Cruz
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Armando Maldonado
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Camila Robles
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gonzalo Latorre
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Danisa Ivanovic-Zuvic
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Catalina Figueroa
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Agustín González
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Petre Cotoras
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carolina Núñez
- Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jaime Labarca
- Departamento de Enfermedades Infecciosas del Adulto, Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Arnoldo Riquelme
- Departamento de Gastroenterología, Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
13
|
Mayà-Casalprim G, Gaig C, Matos N, Reyes D, Iranzo-De Riquer A, Amaro S, Santamaría-Cano J. [Focal epileptic seizures mimicking a stroke: neuroimaging and electroencephalographic correlations]. Rev Neurol 2020; 70:33. [PMID: 31845754 DOI: 10.33588/rn.7001.2019324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
| | - C Gaig
- Hospital Clínic de Barcelona, 08036 Barcelona, España
| | - N Matos
- Hospital Clínic de Barcelona, 08036 Barcelona, España
| | - D Reyes
- Hospital Clínic de Barcelona, 08036 Barcelona, España
| | | | - S Amaro
- Hospital Clínic de Barcelona, 08036 Barcelona, España
| | | |
Collapse
|
14
|
Normant E, Ribeiro M, Reyes D, Miskin H, Sportelli P, Weiss M, Bosch F, Roue G. THE NOVEL BISPECIFIC CD47-CD19 ANTIBODY TG-1801 POTENTIATES THE ACTIVITY OF UBLITUXIMAB-UMBRALISIB (U2) DRUG COMBINATION IN PRECLINICAL MODELS OF B-NHL. Hematol Oncol 2019. [DOI: 10.1002/hon.133_2630] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- E. Normant
- Preclinical Sciences; TG Therapeutics; New York United States
| | - M.L. Ribeiro
- Experimental Hematology; Vall d'Hebron Institute of Oncology (VHIO); Barcelona Spain
| | - D. Reyes
- Experimental Hematology; Vall d'Hebron Institute of Oncology (VHIO); Barcelona Spain
| | - H.P. Miskin
- Preclinical Sciences; TG Therapeutics; New York United States
| | - P. Sportelli
- Preclinical Sciences; TG Therapeutics; New York United States
| | - M.S. Weiss
- Preclinical Sciences; TG Therapeutics; New York United States
| | - F. Bosch
- Experimental Hematology; Vall d'Hebron Institute of Oncology (VHIO); Barcelona Spain
| | - G. Roue
- Experimental Hematology; Vall d'Hebron Institute of Oncology (VHIO); Barcelona Spain
| |
Collapse
|
15
|
Ciampi E, Uribe-San-Martin R, Vásquez M, Ruiz-Tagle A, Labbe T, Cruz JP, Lillo P, Slachevsky A, Reyes D, Reyes A, Cárcamo-Rodríguez C. Relationship between Social Cognition and traditional cognitive impairment in Progressive Multiple Sclerosis and possible implicated neuroanatomical regions. Mult Scler Relat Disord 2018; 20:122-128. [PMID: 29414284 DOI: 10.1016/j.msard.2018.01.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 11/16/2017] [Accepted: 01/16/2018] [Indexed: 01/12/2023]
Abstract
BACKGROUND Cognitive impairment is a relevant contributor of the medical and social burden in Progressive MS. Social Cognition, the neurocognitive processes underlying social interaction, has been explored mainly in European and North American cohorts, influencing social aspects of quality of life (QOL) of early MS patients and families. Few studies have studied Social Cognition in Progressive MS and the literature on its neuroanatomical bases or brain atrophy measurements is still scarce. OBJECTIVES To explore the relationship between Social Cognition performance and its correlations with traditional cognitive domains, brain atrophy and QOL in primary and secondary Progressive MS patients. METHODS Cross-sectional analysis including: mini-Social-Cognition-and-Emotional-Assessment (mini-SEA), neuropsychological battery, disability, depression, fatigue, QOL, and brain volume. RESULTS Forty-three MS patients, 23 primary and 20 secondary Progressive, 65% women, mean age and disease duration of 57.2 and 15.7 years, respectively, with high levels of disability (median EDSS 6.0) and a widespread impairment in traditional domains (mostly episodic verbal/visual and working memories) were assessed. The Mini-SEA score was correlated with executive functions (cognitive shifts Rho:0.55; p = 0.001) analyzing the whole group, and with visual episodic memory (Rho:0.58, p = 0.009) in the primary Progressive MS group. Mini-SEA score was also correlated with total normalized grey matter volume (Rho:0.48; p = 0.004). Particularly, atrophy within bilateral cortical regions of orbitofrontal, insula and cerebellum, and right regions of fusiform gyrus and precuneus were significantly associated with higher Social Cognition impairment. In this cohort, QOL was not correlated with Social Cognition, but with EDSS, fatigue and depression. CONCLUSIONS In Progressive MS, Social Cognition is directly correlated with traditional cognitive domains such as executive function and episodic memory. It is also associated with global grey matter atrophy and regional atrophy within associative visual and executive cortical areas, but no correlations with QOL were found in this cohort. These findings may contribute to the understanding of the pathological bases behind Social Cognition in Progressive MS.
Collapse
Affiliation(s)
- E Ciampi
- Neurology Department, Pontifical Catholic University of Chile, Santiago, Chile; Neurology, Hospital Sotero del Rio, Santiago, Chile.
| | - R Uribe-San-Martin
- Neurology Department, Pontifical Catholic University of Chile, Santiago, Chile; Neurology, Hospital Sotero del Rio, Santiago, Chile
| | - M Vásquez
- Neurology Department, Pontifical Catholic University of Chile, Santiago, Chile
| | - A Ruiz-Tagle
- Centre for Advanced Research in Education, University of Chile, Santiago, Chile
| | - T Labbe
- Pontifical Catholic University of Chile, Santiago, Chile
| | - J P Cruz
- Radiology Department, Pontifical Catholic University of Chile, Santiago, Chile
| | - P Lillo
- Neurology Department South, Faculty of Medicine, University of Chile, Geroscience Center for Brain Health and Metabolism, Santiago, Chile
| | - A Slachevsky
- Centre for Advanced Research in Education, University of Chile, Santiago, Chile; Gerosciences Center for Brain Health and Metabolism, Santiago, Chile; Physiopathology Department, ICBM and East Neuroscience Department Faculty of Medicine University of Chile, Santiago, Chile; Cognitive Neurology and Dementia, Neurology Department, Salvador Hospital, Santiago, Chile; Neurology Service, Medicine Department, Alemana Clinic and Universidad del Desarrollo, Santiago, Chile
| | - D Reyes
- Faculty of Medicine, Pontifical Catholic University of Chile, Santiago, Chile
| | - A Reyes
- Neurology Department, Pontifical Catholic University of Chile, Santiago, Chile
| | - C Cárcamo-Rodríguez
- Neurology Department, Pontifical Catholic University of Chile, Santiago, Chile
| |
Collapse
|
16
|
Abstract
INTRODUCTION Flumazenil is an antagonist of the GABA/benzodiazepines receptor complex that might play a role in the treatment of hepatic encephalopathy. However, its efficacy and safety are a matter of debate. METHODS To answer this question we used Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others. We extracted data from the systematic reviews, reanalyzed data of primary studies, conducted a meta-analysis and generated a summary of findings table using the GRADE approach. RESULTS AND CONCLUSIONS We identified two systematic reviews including fourteen randomized trials. We concluded flumazenil does not reduce mortality in patients with hepatic encephalopathy and it is not clear whether it leads to any clinical improvement because the certainty of the evidence is very low.
Collapse
Affiliation(s)
- Diego Reyes
- Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Proyecto Epistemonikos, Santiago, Chile
| | - Francisco Barrera
- Proyecto Epistemonikos, Santiago, Chile; Departamento de Gastroenterología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile. . Address: Centro Evidencia UC, Pontificia Universidad Católica de Chile, Centro de Innovación UC Anacleto Angelini, Av. Vicuña Mackenna 4860, Macul, Santiago
| |
Collapse
|
17
|
Gatel C, Warot-Fonrose B, Biziere N, Rodríguez LA, Reyes D, Cours R, Castiella M, Casanove MJ. Inhomogeneous spatial distribution of the magnetic transition in an iron-rhodium thin film. Nat Commun 2017; 8:15703. [PMID: 28589931 PMCID: PMC5467229 DOI: 10.1038/ncomms15703] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [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: 10/27/2016] [Accepted: 04/14/2017] [Indexed: 11/17/2022] Open
Abstract
Monitoring a magnetic state using thermal or electrical activation is mandatory for the development of new magnetic devices, for instance in heat or electrically assisted magnetic recording or room-temperature memory resistor. Compounds such as FeRh, which undergoes a magnetic transition from an antiferromagnetic state to a ferromagnetic state around 100 °C, are thus highly desirable. However, the mechanisms involved in the transition are still under debate. Here we use in situ heating and cooling electron holography to quantitatively map at the nanometre scale the magnetization of a cross-sectional FeRh thin film through the antiferromagnetic–ferromagnetic transition. Our results provide a direct observation of an inhomogeneous spatial distribution of the transition temperature along the growth direction. Most interestingly, a regular spacing of the ferromagnetic domains nucleated upon monitoring of the transition is also observed. Beyond these findings on the fundamental transition mechanisms, our work also brings insights for in operando analysis of magnetic devices. Films of iron-rhodium alloy undergo a magnetic transition at 100°C, and so are attractive for applications, but a detailed understanding of the transition mechanism has not been achieved. Here, the authors use electron holography to quantitatively map the transition's progress through the film depth.
Collapse
Affiliation(s)
- C Gatel
- CEMES CNRS-UPR 8011, Université de Toulouse, 29 rue Jeanne Marvig, 31055 Toulouse, France
| | - B Warot-Fonrose
- CEMES CNRS-UPR 8011, Université de Toulouse, 29 rue Jeanne Marvig, 31055 Toulouse, France
| | - N Biziere
- CEMES CNRS-UPR 8011, Université de Toulouse, 29 rue Jeanne Marvig, 31055 Toulouse, France
| | - L A Rodríguez
- CEMES CNRS-UPR 8011, Université de Toulouse, 29 rue Jeanne Marvig, 31055 Toulouse, France.,Department of Physics, Universidad del Valle, A.A. 25360, Cali, Colombia
| | - D Reyes
- CEMES CNRS-UPR 8011, Université de Toulouse, 29 rue Jeanne Marvig, 31055 Toulouse, France
| | - R Cours
- CEMES CNRS-UPR 8011, Université de Toulouse, 29 rue Jeanne Marvig, 31055 Toulouse, France
| | - M Castiella
- CEMES CNRS-UPR 8011, Université de Toulouse, 29 rue Jeanne Marvig, 31055 Toulouse, France
| | - M J Casanove
- CEMES CNRS-UPR 8011, Université de Toulouse, 29 rue Jeanne Marvig, 31055 Toulouse, France
| |
Collapse
|
18
|
Sepulveda F, Aliaga A, Fleck D, Fernandez M, Mercado A, Vilches R, Moya F, Ledezma R, Reyes D, Marchant F. Hemostatic agents for access tract in tubeless percutaneous nephrolithotomy: Is it worth? Urol Ann 2016; 8:208-12. [PMID: 27141194 PMCID: PMC4839241 DOI: 10.4103/0974-7796.163796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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] [Indexed: 11/23/2022] Open
Abstract
Introduction: The role of hemostatic agents as an adjunct for closure of the nephrostomy tract in tubeless percutaneous surgery (tubeless percutaneous nephrolithotomy [tPNL]) has been previously evaluated, observing a potential benefit in terms of reduced bleeding and urinary leakage. We assessed the rate of postoperative complications after the use of hemostatic agents for sealing the nephrostomy tract in patients undergoing tPNL at our institution. Subjects and Methods: We performed a retrospective analysis of 52 consecutive patients undergoing tPNL at our center between January 2010 and December 2013. No substance was placed within the tract in 25 patients (Group 1). A cylinder of Surgicel® in addition to 1 unit of Gelita® were placed within the access tract in 27 patients (Group 2). We accounted for demographic variables, stone size, operative time, postoperative pain, development of hematoma, postoperative hematocrit drop, urinary leakage, residual lithiasis, and hospital stay length. Results: Age and sex differed significantly between the two groups (P = 0.0002 and P = 0.048 respectively). However, there were no significant differences in terms of body mass index and stone burden. No significant differences between groups were found with regards to operative time, postoperative hematocrit drop, postoperative pain and presence of residual lithiasis. Conclusion: The use of Gelita® and Surgicel® as hemostatic agents in tPNL is safe, but we were not able to demonstrate any significant benefit in terms of postoperative morbidity after comparing the use of these agents in tPNL. We concluded that the uses of hemostatic agents needed to be evaluated in prospective randomized trials to define its benefits.
Collapse
Affiliation(s)
- Francisco Sepulveda
- Department of Urology, Hospital Clínico de la Universidad de Chile, Universidad de Chile, Santiago, Chile
| | - Alfredo Aliaga
- Department of Urology, Hospital Clínico de la Universidad de Chile, Universidad de Chile, Santiago, Chile
| | - Daniela Fleck
- Department of Urology, Hospital Clínico de la Universidad de Chile, Universidad de Chile, Santiago, Chile
| | - Mario Fernandez
- Department of Urology, Clínica Alemana de Santiago, Santiago de Chile, Santiago, Chile
| | - Alejandro Mercado
- Department of Urology, Hospital Clínico de la Universidad de Chile, Universidad de Chile, Santiago, Chile
| | - Roberto Vilches
- Department of Urology, Hospital Clínico de la Universidad de Chile, Universidad de Chile, Santiago, Chile
| | - Francisco Moya
- Department of Urology, Hospital Clínico de la Universidad de Chile, Universidad de Chile, Santiago, Chile
| | - Rodrigo Ledezma
- Department of Urology, Hospital Clínico de la Universidad de Chile, Universidad de Chile, Santiago, Chile
| | - Diego Reyes
- Department of Urology, Hospital Clínico de la Universidad de Chile, Universidad de Chile, Santiago, Chile
| | - Fernando Marchant
- Department of Urology, Hospital Clínico de la Universidad de Chile, Universidad de Chile, Santiago, Chile
| |
Collapse
|
19
|
Salazar-Onfray F, Pereda C, Reyes D, López MN. TAPCells, the Chilean dendritic cell vaccine against melanoma and prostate cancer. Biol Res 2016; 46:431-40. [PMID: 24510145 DOI: 10.4067/s0716-97602013000400014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 11/15/2013] [Indexed: 11/17/2022] Open
Abstract
Here we summarize 10 years of effort in the development of a biomedical innovation with global projections. This innovation consists of a novel method for the production of therapeutic dendritic-like cells called Tumor Antigen Presenting Cells (TAPCells®). TAPCells-based immunotherapy was tested in more than 120 stage III and IV melanoma patients and 20 castration-resistant prostate cancer patients in a series of phase I and I/II clinical trials. TAPCells vaccines induced T cell-mediated memory immune responses that correlated with increased survival in melanoma patients and prolonged prostate-specific antigen doubling time in prostate cancer patients. Importantly, more than 60% of tested patients showed a Delayed Type Hypersensitivity (DTH) reaction against the lysates, indicating the development of anti-tumor immunological memory that correlates with clinical benefits. The in vitro analysis of the lysate mix showed that it contains damage-associated molecular patterns such as HMBG-1 protein which are capable to improve, through Toll-like receptor-4, maturation and antigen cross-presentation of the dendritic cells (DC). In fact, a Toll-like receptor-4 polymorphism correlates with patient clinical outcomes. Moreover, Concholepas concholepas hemocyanin (CCH) used as adjuvant proved to be safe and capable of enhancing the immunological response. Furthermore, we observed that DC vaccination resulted in a three-fold increase of T helper-1 lymphocytes releasing IFN-γ and a two-fold increase of T helper-17 lymphocytes capable of producing IL-17 in DTH+ with respect to DTH- patients. Important steps have been accomplished for TAPCells technology transfer, including patenting, packaging and technology assessment. Altogether, our results indicate that TAPCells vaccines constitute an exceptional Chilean national innovation of international value.
Collapse
|
20
|
Reyes D, Biziere N, Warot-Fonrose B, Wade T, Gatel C. Magnetic Configurations in Co/Cu Multilayered Nanowires: Evidence of Structural and Magnetic Interplay. Nano Lett 2016; 16:1230-1236. [PMID: 26783831 DOI: 10.1021/acs.nanolett.5b04553] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Off-axis electron holography experiments have been combined with micromagnetic simulations to study the remnant magnetic states of electrodeposited Co/Cu multilayered nanocylinders. Structural and chemical data obtained by transmission electron microscopy have been introduced in the simulations. Three different magnetic configurations such as an antiparallel coupling of the Co layers, coupled vortices, and a monodomain-like state have been quantitatively mapped and simulated. While most of the wires present the same remnant state whatever the direction of the saturation field, we show that some layers can present a change from an antiparallel coupling to vortices. Such a configuration can be of particular interest to design nano-oscillators with two different working frequencies.
Collapse
Affiliation(s)
- D Reyes
- CEMES CNRS-UPR 8011, Université de Toulouse , 31055 Toulouse, France
| | - N Biziere
- CEMES CNRS-UPR 8011, Université de Toulouse , 31055 Toulouse, France
| | - B Warot-Fonrose
- CEMES CNRS-UPR 8011, Université de Toulouse , 31055 Toulouse, France
| | - T Wade
- Laboratoire des Solides Irradiés, Ecole Polytechnique, CNRS, CEA, Université Paris Saclay , F 91128 Palaiseau, France
| | - C Gatel
- CEMES CNRS-UPR 8011, Université de Toulouse , 31055 Toulouse, France
| |
Collapse
|
21
|
Novoa C, Anguita C, Badilla-O S, Aliaga A, Reyes D. [Prostate cancer screening is associated with educational level and knowledge about the disease]. Rev Med Chil 2015; 142:1136-41. [PMID: 25517053 DOI: 10.4067/s0034-98872014000900007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND The screening of prostate cancer allows an earlier diagnosis, allowing more therapeutic options. This screening depends in part on spontaneous patients' consultation, which is largely related to their educational level. AIM To evaluate the association between educational level, knowledge of the disease, and prostatic screening. MATERIAL AND METHODS A questionnaire was applied to 377 men aged between 50 and 90 years to determine their educational level, knowledge of the disease, if they had any prostate screening and age at first screening. Data was analyzed with R Commander. RESULTS Eighty one percent of respondents had some knowledge of the disease and of these, 68% had prostate screenings compared with 34% of those without knowledge of the disease. Information about prostate cancer was reported by 71% and 96% of respondents with primary and university education, respectively. Fifty nine and 90% of respondents with primary and university education had prostate screenings performed, respectively. CONCLUSIONS Those respondents with a prostate cancer screening had a better knowledge of the disease and a higher educational level.
Collapse
|
22
|
Vilches R, Aliaga A, Reyes D, Sepulveda F, Mercado A, Moya F, Ledezma R, Hidalgo J, Olmedo T, Marchant F. Comparison between retrograde intrarenal surgery and extracorporeal shock wave lithotripsy in the treatment of lower pole kidney stones up to 15 mm. Prospective, randomized study. Actas Urol Esp 2015; 39:236-42. [PMID: 25435403 DOI: 10.1016/j.acuro.2014.08.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 08/21/2014] [Accepted: 08/24/2014] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Extracorporeal Shock Wave Lithotripsy (ESWL) is currently the recommended treatment for intra-renal calculi smaller than 2 cm. However the low Stone Free Rate (SFR) in lower pole calculi gives rise to new techniques, such us retrograde intrarenal surgery (RIRS), for improve the surgery outcomes. OBJECTIVE To compare the efficacy of a treatment with ESWL with RIRS, in terms of SFR after surgery, in patients with kidney stones up to 15 mm in the lower pole. MATERIAL AND METHODS A prospective study was carried out in order to assess the results of ESWL and RIRS in patients with lower pole stones less than 15 mm. Among a total of 55 patients, 31 were underwent to ESWL (Group 1) and the remaining 24 to RIRS (Group 2). Clinical data recorded, including general characteristics of each patient, were: calculi size, side, operative time, complications according to Clavien scale, SFR and the presence of residual fragments at 2 months post-treatment assessed by a CT scan. STATA 11 was used to perform the statistical analysis. RESULTS There were no differences for general descriptors among groups with the exception of a significantly longer operative time for RIRS. The rates of SFR and residual fragments lesser than 3 mm. were lower in the RIRS group than in ESWL ones. RIRS also showed a lower rate of clinically significant fragments (0% vs 42.3%. P < .05). In the subgroup of patients with stones between 10/15 mm RIRS showed higher SFR (75% vs. 41.2%) and a lower rate of stones>3 mm (0% vs. 58.8%), being statistically significant (P < .05). Clavien III or higher complications were not reported in any of the groups. CONCLUSIONS In the treatment of lower pole stone RIRS has the same results than ESWL in terms of SFR. Regarding absence of a clinically significant residual fragment, RIRS was superior to ESWL. A bigger sample size is required in order to confirm this results.
Collapse
|
23
|
Greene S, Duran R, Sohn J, Kyere S, Reyes D, Lin M, Geschwind J, Johns Hopkins T. The role of Lipiodol as an imaging biomarker of metastatic tumor necrosis after TACE: preliminary results of a longitudinal multimodality investigation. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|
24
|
Sahu S, Duran R, Schernthaner R, Sohn J, Reyes D, Lin M, Geschwind J. Volumetric contrast patterns on intraprocedural cone-beam CT predicts tumor response: preliminary results in a prospective trial of HCC patients treated with DEBDOX-M1 bead TACE. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.323] [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: 11/25/2022] Open
|
25
|
López PJ, Reed F, Ovalle A, Celis S, Reyes D, Letelier N, Zubieta R. Intraoperative cystography pre- and post-endoscopic treatment for vesicoureteral reflux: guaranteed success? J Pediatr Urol 2014; 10:831-4. [PMID: 24972883 DOI: 10.1016/j.jpurol.2014.02.002] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Accepted: 02/07/2014] [Indexed: 11/19/2022]
Abstract
OBJECTIVE This study was designed to investigate whether post-endoscopic treatment (ET) intraoperative cystography is predictive of treatment outcome. PATIENTS AND METHODS Patients diagnosed with vesicoureteral reflux (VUR) and treated endoscopically with polyacrylate/polyalcohol copolymer or dextranomer hyaluronic acid were studied prospectively between August 2009 and April 2011. Slow infusion pre-ET cystography was performed under anesthesia. Post-ET cystography was performed only if the intraoperative pre-ET results demonstrated VUR. RESULTS Over a period of 20 months, 23 patients were studied (18 girls, five boys), with an average age of 41.9 months (range 13 months-11 years). Thirty-two renal units with reflux were treated: nine bilateral cases, seven right, and seven left. The distribution of reflux grades was as follows: two grade I, 10 grade II, 11 grade III, nine grade IV. All injected ureters demonstrated grade 0 hydrodistention after the procedure. Twelve of 23 of the pre-ET cystography results were negative for VUR, indicating that the sensitivity of this test is 47% compared with the preoperative voiding cystourethrography (VCUG) or nuclear cystogram. There were no procedure complications. CONCLUSION Of all patients (n = 23), nearly 60% did not demonstrate pre-ET VUR on intraoperative cystography. If a postoperative VCUG had been performed on all patients, more than half would have received unnecessary radiation. Therefore, this study demonstrates that post-ET cystography does not predict the success of ET of VUR intraoperative. Pre-ET cystography under general anesthesia before ureteral injection, has very low sensitivity, creating false-negatives that may complicate the interpretation of post-ET cystography. We suggest that intraoperative cystography before and after ET fails to show clinical utility and should not be used to predict the outcome of endoscopic VUR treatment.
Collapse
Affiliation(s)
- P-J López
- Pediatric Urology Service, Dr. Exequiel González Cortés Hospital, Barros Luco 3301, San Miguel, Santiago, Chile; University of Chile, School of Medicine, Department of Pediatrics and Pediatric Surgery, Santiago, Chile; Clinica Alemana, Santiago, Chile.
| | - F Reed
- Pediatric Urology Service, Dr. Exequiel González Cortés Hospital, Barros Luco 3301, San Miguel, Santiago, Chile
| | - A Ovalle
- Pediatric Urology Service, Dr. Exequiel González Cortés Hospital, Barros Luco 3301, San Miguel, Santiago, Chile; University of Chile, School of Medicine, Department of Pediatrics and Pediatric Surgery, Santiago, Chile
| | - S Celis
- Pediatric Urology Service, Dr. Exequiel González Cortés Hospital, Barros Luco 3301, San Miguel, Santiago, Chile
| | - D Reyes
- Pediatric Urology Service, Dr. Exequiel González Cortés Hospital, Barros Luco 3301, San Miguel, Santiago, Chile
| | - N Letelier
- Pediatric Urology Service, Dr. Exequiel González Cortés Hospital, Barros Luco 3301, San Miguel, Santiago, Chile; University of Chile, School of Medicine, Department of Pediatrics and Pediatric Surgery, Santiago, Chile
| | - R Zubieta
- Pediatric Urology Service, Dr. Exequiel González Cortés Hospital, Barros Luco 3301, San Miguel, Santiago, Chile; University of Chile, School of Medicine, Department of Pediatrics and Pediatric Surgery, Santiago, Chile; Clinica Alemana, Santiago, Chile
| |
Collapse
|
26
|
Nguyen TA, Yin TI, Reyes D, Urban GA. Microfluidic chip with integrated electrical cell-impedance sensing for monitoring single cancer cell migration in three-dimensional matrixes. Anal Chem 2013; 85:11068-76. [PMID: 24117341 DOI: 10.1021/ac402761s] [Citation(s) in RCA: 130] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cell migration has been recognized as one hallmark of malignant tumor progression. By integrating the method of electrical cell-substrate impedance sensing (ECIS) with the Boyden chamber design, the state-of-the-art techniques provide kinetic information about cell migration and invasion processes in three-dimensional (3D) extracellular matrixes. However, the information related to the initial stage of cell migration with single-cell resolution, which plays a unique role in the metastasis-invasion cascade of cancer, is not yet available. In this paper, we present a microfluidic device integrated with ECIS for investigating single cancer cell migration in 3D matrixes. Using microfluidics techniques without the requirement of physical connections to off-chip pneumatics, the proposed sensor chip can efficiently capture single cells on microelectrode arrays for sequential on-chip 2D or 3D cell culture and impedance measurement. An on-chip single-cell migration assay was successfully demonstrated within several minutes. Migration of single metastatic MDA-MB-231 cells in their initial stage can be monitored in real time; it shows a rapid change in impedance magnitude of approximately 10 Ω/s, whereas no prominent impedance change is observed for less-metastasis MCF-7 cells. The proposed sensor chip, allowing for a rapid and selective detection of the migratory properties of cancer cells at the single-cell level, could be applied as a new tool for cancer research.
Collapse
Affiliation(s)
- Tien Anh Nguyen
- Department of Microsystems Engineering, IMTEK, University of Freiburg , Georges-Koehler Allee 103, 79110 Freiburg, Germany
| | | | | | | |
Collapse
|
27
|
Reyes D, Salazar L, Espinoza E, Pereda C, Castellón E, Valdevenito R, Huidobro C, Inés Becker M, Lladser A, López MN, Salazar-Onfray F. Tumour cell lysate-loaded dendritic cell vaccine induces biochemical and memory immune response in castration-resistant prostate cancer patients. Br J Cancer 2013; 109:1488-97. [PMID: 23989944 PMCID: PMC3777003 DOI: 10.1038/bjc.2013.494] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [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: 05/26/2013] [Revised: 07/24/2013] [Accepted: 07/30/2013] [Indexed: 12/16/2022] Open
Abstract
Background: Recently, we produced a tumour antigen-presenting cells (TAPCells) vaccine using a melanoma cell lysate, called TRIMEL, as an antigen source and an activation factor. Tumour antigen-presenting cells induced immunological responses and increased melanoma patient survival. Herein, we investigated the effect of TAPCells loaded with prostate cancer cell lysates (PCCL) as an antigen source, and TRIMEL as a dendritic cell (DC) activation factor; which were co-injected with the Concholepas concholepas haemocyanin (CCH) as an adjuvant on castration-resistant prostate cancer (CRPC) patients. Methods: The lysate mix capacity, for inducing T-cell activation, was analysed by flow cytometry and Elispot. Delayed-type hypersensitivity (DTH) reaction against PCCL, frequency of CD8+ memory T cells (Tm) in blood and prostate-specific antigen (PSA) levels in serum were measured in treated patients. Results: The lysate mix induced functional mature DCs that were capable of activating PCCL-specific T cells. No relevant adverse reactions were observed. Six out of 14 patients showed a significant decrease in levels of PSA. DTH+ patients showed a prolonged PSA doubling-time after treatment. Expansion of functional central and effector CD8+ Tm were detected. Conclusion: Treatment of CRPC patients with lysate-loaded TAPCells and CCH as an adjuvant is safe: generating biochemical and memory immune responses. However, the limited number of cases requires confirmation in a phase II clinical trial.
Collapse
Affiliation(s)
- D Reyes
- 1] Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile [2] Service of Urology, University of Chile Clinical Hospital, Santiago 8380453, Chile [3] Millennium Institute on Immunology and Immunotherapy, University of Chile, Santiago 8380453 Chile
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Querci M, Rombini F, Espinola L, Boutureira M, Yetman M, Reyes D, Solis C, Gargiulo R, Galarza P, Muzzio M, Lamelas A, Coronel R, Guastavino D, Lambertini R, Nacinovich F. P53 NEISSERIA GONORRHOEAE INFECTIVE ENDOCARDITIS. A CASE REPORT. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70077-3] [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: 11/29/2022]
|
29
|
Amaya E, Reyes D, Paniagua M, Calderón S, Rashid MU, Colque P, Kühn I, Möllby R, Weintraub A, Nord CE. Antibiotic resistance patterns of Escherichia coli isolates from different aquatic environmental sources in León, Nicaragua. Clin Microbiol Infect 2012; 18:E347-54. [PMID: 22738232 DOI: 10.1111/j.1469-0691.2012.03930.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Antibiotic-resistant bacteria have emerged due to the selective pressure of antimicrobial use in humans and animals. Water plays an important role in dissemination of these organisms among humans, animals and the environment. We studied the antibiotic resistance patterns among 493 Escherichia coli isolates from different aquatic environmental sources collected from October 2008 to May 2009 in León, Nicaragua. High levels of antibiotic resistance were found in E. coli isolates in hospital sewage water and in eight of 87 well-water samples. Among the resistant isolates from the hospital sewage, ampicillin, chloramphenicol, ciprofloxacin, nalidixic acid, trimethoprim-sulphamethoxazole was the most common multi-resistance profile. Among the resistant isolates from the wells, 19% were resistant to ampicillin, ceftazidime, ceftriaxone, cefotaxime, chloramphenicol, ciprofloxacin, gentamicin, nalidixic acid and trimethoprim-sulphamethoxazole. E. coli producing ESBL and harbouring bla(CTX-M) genes were detected in one of the hospital sewage samples and in 26% of the resistant isolates from the well-water samples. The bla(CTX-M-9) group was more prevalent in E. coli isolates from the hospital sewage samples and the bla(CTX-M-1) group was more prevalent in the well-water samples.
Collapse
Affiliation(s)
- E Amaya
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Ovalle A, López PJ, Reed F, Reyes D, Letelier N, Zubieta R. What to do if cystoscopic graspers are not available? Polypropylene loop as an alternative for double J stent extraction, the 'cowboy way'. J Pediatr Urol 2012; 8:241-3. [PMID: 21813329 DOI: 10.1016/j.jpurol.2011.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Accepted: 07/01/2011] [Indexed: 11/25/2022]
|
31
|
Lin M, Bhagat N, Pellerin O, Rao P, Loffroy R, Ardon R, Mory B, Reyes D, Geschwind J. Abstract No. 241: Volumetric RECIST: an improved way to assess tumor response after transcatheter arterial chemoembolization (TACE). J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.292] [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: 11/27/2022] Open
|
32
|
Lin M, Bhagat N, Pellerin O, Rao P, Loffroy R, Ardon R, Mory B, Reyes D, Geschwind J. Abstract No. 242: Quantitative EASL: an improved way to assess tumor response after transcatheter arterial chemoembolization (TACE). J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
33
|
Martínez S, Hernández L, Reyes D, Gomez E, Ivory M, Davison C, Aubin S. Note: fast, small, and low vibration mechanical laser shutters. Rev Sci Instrum 2011; 82:046102. [PMID: 21529046 DOI: 10.1063/1.3574224] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We present three novel mechanical laser shutter designs based, respectively, on a stepper motor, a relay, and a piezoelectric actuator. Each shutter type is ideally suited to a specific shuttering application. The stepper motor is well suited for applications requiring low vibrations, the relay is compact and capable of rapid bursts, and the piezoelectric is 2 orders of magnitude faster than other available mechanical shutters.
Collapse
Affiliation(s)
- S Martínez
- Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78290, Mexico
| | | | | | | | | | | | | |
Collapse
|
34
|
Liapi E, Georgiades C, Hong K, Reyes D, Wahlin T, Hebert J, Geschwind J. Abstract No. 247: Chemoembolization of hepatocellular carcinoma: Comparison of disease outcomes between hepatitis B and C infection. J Vasc Interv Radiol 2011. [DOI: 10.1016/j.jvir.2011.01.272] [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] Open
|
35
|
Reyes D, Kamel I, Georgiades C, Hong K, Bhagat N, Frangakis C, Geschwind J. Abstract No. 179: Prospective, phase II study of chemoembolization with drug-eluting beads for hepatic neuroendocrine metastases: Interim analysis. J Vasc Interv Radiol 2011. [DOI: 10.1016/j.jvir.2011.01.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
36
|
Aguilera R, Saffie C, Tittarelli A, González FE, Ramírez M, Reyes D, Pereda C, Hevia D, García T, Salazar L, Ferreira A, Hermoso M, Mendoza-Naranjo A, Ferrada C, Garrido P, López MN, Salazar-Onfray F. Heat-Shock Induction of Tumor-Derived Danger Signals Mediates Rapid Monocyte Differentiation into Clinically Effective Dendritic Cells. Clin Cancer Res 2011; 17:2474-83. [DOI: 10.1158/1078-0432.ccr-10-2384] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
37
|
Aguilera R, Saffie C, González F, Tittarelli A, Reyes D, Ferrada C, López MN, Salazar-Onfray F. Abstract B17: Heat shock-induced danger signals in tumor cells are crucial for a rapid differentiation of monocyte to therapeutic dendritic cells. Clin Cancer Res 2010. [DOI: 10.1158/1078-0432.tcme10-b17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Dendritic cells (DCs) are potent antigen-presenting cells (APCs) that initiate a cell-mediated antitumor immune response. Recently, we showed that monocyte-derived DCs loaded with a heat-shocked melanoma cell lysate (TRIMEL®) induce melanoma-specific immune responses, thus prolonging patient survival. Here, we describe the rapid effect of TRIMEL on human monocytes differentiation to tumor-antigen presenting cells (TAPCells®). TAPCells showed a mature DC-like phenotype and effectively activated melanoma associated antigen (MAA)-specific CD4+ and CD8+ T lymphocytes. Moreover, heat shock (HS) pre-conditioning of TRIMEL composing cells increased calreticulin (CRT) cell surface translocation and released high-mobility group box 1 protein (HMGB1), which was closely associated to the induction of APC maturation and efficient MAAs cross-presentation. Finally, 26 out of 43 patients vaccinated with TAPCells showed a TRIMEL-specific delayed type hypersensitivity reaction (DTH) associated to anti-melanoma T cell recognition, reduced rates of progression and prolonged patient survival. Our results suggest that heat-shocked tumor cell lysates are optimal source of MAAs, inducing activated APCs with improved MAAs cross-presentation capacity and clinically effective immunogenicity.
Citation Information: Clin Cancer Res 2010;16(7 Suppl):B17
Collapse
|
38
|
Reyes D, Azad N, Koteish A, Kamel I, Hamilton J, Georgiades C, Pawlik T, Choti M, Geschwind J. Abstract No. 141: Phase II trial of sorafenib combined with doxorubicin eluting bead-transarterial chemoembolization for patients with unresectable hepatocellular carcinoma: Interim safety analysis. J Vasc Interv Radiol 2010. [DOI: 10.1016/j.jvir.2009.12.296] [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: 10/19/2022] Open
|
39
|
Bender M, Geschwind J, Wahlin T, Reyes D, Herman J, Liapi E. Abstract No. 113: Chemoembolization versus yttrium-90 glass microsphere radioembolization for unresectable neuroendocrine metastases: Comparison of anatomic and functional radiological and clinical outcomes in a single US center. J Vasc Interv Radiol 2010. [DOI: 10.1016/j.jvir.2009.12.265] [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: 11/30/2022] Open
|
40
|
Reyes D, Vossen J, Kamel I, Mulcahy M, Salem R, Messersmith W, Weekes C, Georgiades C, Hong K, Geschwind J. Abstract No. 140: Phase II trial of bevacizumab combined with transarterial chemoembolization (TACE) for hepatocellular carcinoma: Initial experience at two institutions. J Vasc Interv Radiol 2010. [DOI: 10.1016/j.jvir.2009.12.295] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
|
41
|
Reyes D, Vossen J, Kamel I, Azad N, Wahlin T, Torbenson M, Choti M, Geschwind J. Abstract No. 142: Single centre phase II trial of transarterial chemoembolization with drug eluting beads for patients with unresectable hepatocellular carcinoma: Initial experience in the USA. J Vasc Interv Radiol 2010. [DOI: 10.1016/j.jvir.2009.12.297] [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: 11/25/2022] Open
|
42
|
Liapi E, Hong K, Georgiades CS, Wahlin T, Reyes D, Kamel IR, Geschwind JH. Standardized treatment and follow-up protocol of hepatocellular carcinoma with transcatheter arterial chemoembolization: Survival, clinical, and tumor control outcome over 12 years at a U.S. center. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e15522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e15522 Background: To report the outcome of the care of patients with hepatocellular carcinoma (HCC) treated with standardized transcatheter arterial chemomembolization (TACE), with a focus on tumor response according to Response Evaluation Criteria in Solid Tumors (RECIST), progression of underlying cirrhosis [Child-Pugh (CP) score], time to progression (TTP) and survival from 1996 to 2008. Methods: TACE was performed on 365 patients in 1,035 sessions. According to a standardized protocol, all patients received imaging (MRI and/or CT) at baseline and at 4–6 weeks after each session and were clinically, biochemically and radiologically evaluated before each session. Liver disease status was evaluated before and at the end of the treatment period with the CP class system and tumor size measurements according to the RECIST. The Barcelona Clinic Liver Cancer (BCLC) classification was employed to stage patients. Three chemotherapeutic agents and lipiodol, followed by non-occlusive embolization were utilized during TACE. Complete vessel occlusion was avoided at all times. Overall survival and TTP were calculated according to the Kaplan-Meier method. The log-rank test was used to calculate differences between groups in the subgroup analysis. Results: All patients (78% male, mean age: 63.5 years) received an average of 3 TACE sessions (range: 1–10 and average interval between sessions: 75 days). Sixty six percent of patients had 3 or more tumors, with a mean tumor size at presentation of 6.9 cm. Partial response was achieved in 32 % of patients, while 65% remained stable over the course of 3 TACEs. CP class remained unchanged for 75% of patients over the above course of treatment. Median survival for the entire cohort was 20 months and TTP was 14 months. Interestingly, advanced BCLC patients achieved similar tumor response (PR:33%), TTP of 13.4 months and median survival of 13.7 months. Conclusions: Patients with HCC treated with the aforementioned standardized TACE and follow-up protocol showed durable survival, stable liver disease and effective tumor control. [Table: see text]
Collapse
Affiliation(s)
- E. Liapi
- Johns Hopkins University, Baltimore, MD; Johns Hopkins Univeristy, Baltimore, MD
| | - K. Hong
- Johns Hopkins University, Baltimore, MD; Johns Hopkins Univeristy, Baltimore, MD
| | - C. S. Georgiades
- Johns Hopkins University, Baltimore, MD; Johns Hopkins Univeristy, Baltimore, MD
| | - T. Wahlin
- Johns Hopkins University, Baltimore, MD; Johns Hopkins Univeristy, Baltimore, MD
| | - D. Reyes
- Johns Hopkins University, Baltimore, MD; Johns Hopkins Univeristy, Baltimore, MD
| | - I. R. Kamel
- Johns Hopkins University, Baltimore, MD; Johns Hopkins Univeristy, Baltimore, MD
| | - J. H. Geschwind
- Johns Hopkins University, Baltimore, MD; Johns Hopkins Univeristy, Baltimore, MD
| |
Collapse
|
43
|
López MN, Pereda C, Segal G, Muñoz L, Aguilera R, González FE, Escobar A, Ginesta A, Reyes D, González R, Mendoza-Naranjo A, Larrondo M, Compán A, Ferrada C, Salazar-Onfray F. Prolonged Survival of Dendritic Cell–Vaccinated Melanoma Patients Correlates With Tumor-Specific Delayed Type IV Hypersensitivity Response and Reduction of Tumor Growth Factor β-Expressing T Cells. J Clin Oncol 2009; 27:945-52. [DOI: 10.1200/jco.2008.18.0794] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PurposeThe aim of this work was to assess immunologic response, disease progression, and post-treatment survival of melanoma patients vaccinated with autologous dendritic cells (DCs) pulsed with a novel allogeneic cell lysate (TRIMEL) derived from three melanoma cell lines.Patients and MethodsForty-three stage IV and seven stage III patients were vaccinated four times with TRIMEL/DC vaccine. Specific delayed type IV hypersensitivity (DTH) reaction, ex vivo cytokine production, and regulatory T-cell populations were determined. Overall survival and disease progression rates were analyzed using Kaplan-Meier curves and compared with historical records.ResultsThe overall survival for stage IV patients was 15 months. More than 60% of patients showed DTH-positive reaction against the TRIMEL. Stage IV/DTH-positive patients displayed a median survival of 33 months compared with 11 months observed for DTH-negative patients (P = .0014). All stage III treated patients were DTH positive and remained alive and tumor free for a median follow-up period of 48 months (range, 33 to 64 months). DTH-positive patients showed a marked reduction in the proportion of CD4+ transforming growth factor (TGF) β+ regulatory T cells compared to DTH-negative patients (1.54% v 5.78%; P < .0001).ConclusionOur findings strongly suggest that TRIMEL-pulsed DCs provide a standardized and widely applicable source of melanoma antigens, very effective in evoking antimelanoma immune response. To our knowledge, this is the first report describing a correlation between vaccine-induced reduction of CD4+TGFβ+ regulatory T cells and in vivo antimelanoma immune response associated to improved patient survival and disease stability.
Collapse
Affiliation(s)
- Mercedes N. López
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Cristian Pereda
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Gabriela Segal
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Leonel Muñoz
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Raquel Aguilera
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Fermín E. González
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Alejandro Escobar
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Alexandra Ginesta
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Diego Reyes
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Rodrigo González
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Ariadna Mendoza-Naranjo
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Milton Larrondo
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Alvaro Compán
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Carlos Ferrada
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| | - Flavio Salazar-Onfray
- From the Millennium Nucleus on Immunology and Immunotherapy, Disciplinary Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile; Research Support Office, Clinical Hospital of the University of Chile, Santiago; and the Regional Hospital of Concepción, Concepción, Chile
| |
Collapse
|
44
|
Cabezas J, Huidobro C, Larson T, Fruland B, Acevedo C, Marchant F, Palma C, Olea M, Reyes D, Storme O. SCHU-49: Electrochemical Ablation of the Prostate: A Feasibility Study for the Treatment of Prostate Cancer and Benign Prostatic Hyperplasia. Urology 2008. [DOI: 10.1016/j.urology.2008.08.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
45
|
Reyes D, Continentino MA. Dimensional crossover in anisotropic Kondo lattices. J Phys Condens Matter 2007; 19:406203. [PMID: 22049102 DOI: 10.1088/0953-8984/19/40/406203] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Dimensional crossover in the Kondo necklace model is analyzed using the bond-operator method at zero and finite temperatures. Explicit relations describing quasi-two-dimensional properties are obtained by asymptotically solving the resulting equations. The crossover from two dimensions (2d) to three dimensions (3d) is investigated, turning on the electronic hopping ([Formula: see text]) of conduction electrons between different planes. In order to give continuity to our analysis, both cases of crossover, quasi-three-dimensional (q3d) and quasi-one-dimensional (q1d), are also investigated. The phase diagram as a function of temperature T, [Formula: see text] and [Formula: see text], where [Formula: see text] is the hopping within the planes, is calculated. Unusual reentrant behavior in the temperature-dependent antiferromagnetic critical line is found close to two dimensions. Near the isotropic three-dimensional quantum critical point the critical line is described by a standard power law with a square root dependence on the distance to the quantum critical point.
Collapse
Affiliation(s)
- D Reyes
- Centro Brasileiro de Pesquisas Físicas-Rua Dr Xavier Sigaud, 150-Urca, 22290-180, RJ, Brazil
| | | |
Collapse
|
46
|
López MN, Segal G, Pereda C, Aguilera R, Ginesta A, Reyes D, Ferrada C, Salazar-Onfray F. Regulatory T Cells Affect the DC-mediated Immunotherapy Outcome in Melanoma Patients. Clin Immunol 2007. [DOI: 10.1016/j.clim.2007.03.509] [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: 10/23/2022]
|
47
|
Cardemil G, Fernández E, Riffo P, Reyes D, Ledezma R, Mira M, Morales C, Salguero J. [Sclerosing hemangioma presenting as a solitary lung nodule. Report of one case]. Rev Med Chil 2005; 132:853-6. [PMID: 15379333 DOI: 10.4067/s0034-98872004000700010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Lung sclerosing hemangioma is an uncommon tumor that presents as a solitary asymptomatic nodule and that affects middle age women. It derives from type II pneumocytes. We report a 52 years old female with a solitary lung nodule detected in a chest X ray requested for the diagnosis of an acute respiratory disease. The nodule was excised by video thoracoscopy and the frozen section biopsy was informed as a non small cell undifferentiated carcinoma. Therefore an inferior right lobectomy with lymph node resection was performed. The definitive biopsy was informed as a lung sclerosing hemangioma.
Collapse
Affiliation(s)
- Gonzalo Cardemil
- Departamento de Cirugia, Hospital Clinico de la Universidad de Chile, Santiago
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Santana Reyes C, García-Muñoz F, Reyes D, González G, Dominguez C, Domenech E. Role of cytokines (interleukin-1beta, 6, 8, tumour necrosis factor-alpha, and soluble receptor of interleukin-2) and C-reactive protein in the diagnosis of neonatal sepsis. Acta Paediatr 2003; 92:221-7. [PMID: 12710650 DOI: 10.1111/j.1651-2227.2003.tb00530.x] [Citation(s) in RCA: 60] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIM To investigate whether the serum levels of interleukin-1beta, 6, 8, tumour necrosis factor-alpha and the soluble receptor of IL-2 are useful in the diagnosis of neonatal sepsis, and whether their diagnostic power is increased when in combination with classical markers such as C-reactive protein and white blood cell count. METHODS Blood samples were collected at admission from 40 neonates with suspected infection. Patients were included in different groups according to the bacteriological and laboratory results: Group I consisted of 20 newborns with positive blood cultures and other biological tests suggestive of infection. Group II included 20 neonates with negative blood cultures and biological tests not suggestive of infection. The control group included 20 healthy neonates with no clinical or biological data of infection. RESULTS Mean values of C-reactive protein were significantly higher in Group I. No differences were found between the groups for white blood cell count, with the exception of the presence of leucocytosis in Group II. Levels of interleukin-1beta, 6, 8, tumour necrosis factor-alpha, soluble receptor of interleukin-2, and C-reactive protein were significantly higher in infected neonates than in the control groups. Detection sensitivity and specificity were 80 and 92% for C-reactive protein, 60 and 87% for interleukin-1beta, 61 and 80% for interleukin-6, 62 and 96% for interleukin-8, 54 and 92% for tumour necrosis factor-alpha and 63 and 94% for soluble receptor of interleukin-2. The discriminant analysis showed that the best combination for sepsis diagnosis was C-reactive protein + interleukin-8 + soluble receptor of interleukin-2, with a sensitivity of 85% and a specificity of 97.1%. CONCLUSION Our study suggests that no individual test can on its own identify infected neonates, and that although the combination of C-reactive protein, interleukin-8 and the soluble receptor of interleukin-2 exhibits a high specificity, its sensitivity is limited.
Collapse
Affiliation(s)
- C Santana Reyes
- Division of Neonatology, Hospital Universitario Materno-lnfantil de Canarias, Las Palmas de Gran Canaria, Spain.
| | | | | | | | | | | |
Collapse
|
49
|
García-Muñoz F, Santana C, Reyes D, Wiehoff A, López-Pinto JM, García-Alix A. Early sepsis, obstructive jaundice and right-sided diaphragmatic hernia in the newborn. Acta Paediatr 2001; 90:96-8. [PMID: 11227344] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
A male newborn was admitted to our Unit because of early sepsis and shock. He required antimicrobial therapy and mechanical ventilation and initially did well, although he exhibited jaundice and cholestasis. During the second week he deteriorated, with radiological opacification of the right hemithorax and pleural effusion, and did poorly in spite of antibiotical therapy and drainage of the effusion. In the third week, the X-ray suggested some bowel loops in the right hemithorax. A right-sided diaphragmatic hernia was confirmed by a CT-scan, and surgery was performed with good outcome. The association of delayed-onset right-sided CDH following early sepsis and obstructive jaundice has not been published before, and illustrates a scarcely known form of presentation of this condition.
Collapse
MESH Headings
- Cholestasis/complications
- Hernia, Diaphragmatic/complications
- Hernia, Diaphragmatic/diagnosis
- Hernia, Diaphragmatic/surgery
- Hernias, Diaphragmatic, Congenital
- Humans
- Infant, Newborn
- Infant, Premature
- Infant, Premature, Diseases/diagnosis
- Male
- Pleural Effusion/etiology
- Sepsis/complications
- Tomography, X-Ray Computed
Collapse
Affiliation(s)
- F García-Muñoz
- Neonatal Unit, Department of Paediatrics, Hospital Universitario Materno-Infantil de Canarias, Las Palmas de Gran Canaria, Spain
| | | | | | | | | | | |
Collapse
|
50
|
Abstract
Excessive body weight gain is an undesirable side effect of prolonged administration of antipsychotic drugs (AP), which affects health and interferes with treatment compliance. It has been suggested that hyperprolactinemia-induced endocrine and metabolic abnormalities, particularly in the gonadal steroids, might be involved in the development of this type of weight gain. To test this hypothesis, reproductive hormones, cortisol, dehydro-epiandrosterone-sulfate (DHEA-S), thyroid hormones, and body weight gain were assessed in 18 patients (9 men, 9 women) with mental disorders receiving AP who had been medication-free for at least 3 months before the study, and in 27 placebo-treated subjects (10 men, 17 women). In women, hormones were evaluated during several phases of the menstrual cycle. A significant weight gain was observed in men but not in women. Under AP administration, women displayed significantly lower serum levels of estradiol and progesterone, whereas in men the levels of free testosterone and DHEA-S were significantly lower than in controls. Hyperprolactinemia was observed in both sexes. The levels of follicle-stimulating hormone in women and luteinizing hormone in men were significantly elevated by treatment, thus suggesting that the functioning of the hypothalamus-pituitary gonads was preserved. In men, such an endocrine profile resembles that observed in subjects with primary obesity. Women under AP administration were found to be relatively hyperandrogenic because of decreased serum estradiol levels, whereas women with primary obesity are known to display actual increased levels of androgens. These endocrine abnormalities may contribute to the excessive weight gain observed after AP treatment, and these could be the target of novel pharmacological treatments.
Collapse
Affiliation(s)
- T Baptista
- Department of Physiology, Medical School, Universidad de Los Andes, Mérida, Venezuela
| | | | | |
Collapse
|