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Giavedoni P, Combalia A, Espinosa N, Aguilera J, Puig S. Exposure to UV Radiation in Lifeguards on Barcelona's Beaches: An Underestimated Occupational Risk. Actas Dermosifiliogr 2024:S0001-7310(24)00178-9. [PMID: 38423506 DOI: 10.1016/j.ad.2024.02.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 10/02/2023] [Accepted: 10/09/2023] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND The development of skin cancer is closely related to high exposure to UV radiation. Lifeguards are at an increased risk of excessive sun exposure. OBJECTIVES The main objective of this study was to measure the exposure of Barcelona's beach lifeguards to UV radiation. METHODS Measurements in the work chair were taken every 30min on a typical working day from 10:45 am to 19:15 pm. These measurements were carried out on four different days. These data were used to calculate the erythematous doses received during working hours, as well as those potentially received throughout the summer season. Vitamin D production was also estimated for the four days that the radiation received was measured, and the amount generated was calculated for the entire summer season. RESULTS Exposure to UV radiation among Barcelona lifeguards far exceeds safety limits. In some locations, the exposure to UVB radiation is more than 16 times the minimum erythematous dose for phototype II skin. LIMITATIONS This study assessed the radiation received during only four days. However, is a much higher number than most of the published papers. CONCLUSION Although the health risks of excessive exposure to UV radiation are known, Barcelona's beach lifeguards are insufficiently protected.
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Affiliation(s)
- P Giavedoni
- Departamento de Dermatología, Institut Clínic de Medicina i Dermatologia (ICMiD), Barcelona, España; Universidad de Barcelona, Barcelona, España.
| | - A Combalia
- Departamento de Dermatología, Institut Clínic de Medicina i Dermatologia (ICMiD), Barcelona, España; Universidad de Barcelona, Barcelona, España
| | - N Espinosa
- Departamento de Dermatología, Institut Clínic de Medicina i Dermatologia (ICMiD), Barcelona, España; Universidad de Barcelona, Barcelona, España; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, España
| | - J Aguilera
- Laboratorio de Fotobiología Dermatológica, Centro de Investigaciones Médico Sanitarias, Departamento de Medicina y Dermatología, Universidad de Málaga, Málaga, España
| | - S Puig
- Departamento de Dermatología, Institut Clínic de Medicina i Dermatologia (ICMiD), Barcelona, España; Universidad de Barcelona, Barcelona, España; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, España
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Giavedoni P, Combalia A, Espinosa N, Aguilera J, Puig S. Exposure to UV Radiation in Lifeguards on Barcelona's Beaches: An Underestimated Occupational Risk. Actas Dermosifiliogr 2023:S0001-7310(23)00816-5. [PMID: 37858859 DOI: 10.1016/j.ad.2023.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 10/02/2023] [Accepted: 10/09/2023] [Indexed: 10/21/2023] Open
Abstract
BACKGROUND The development of skin cancer is closely related to high exposure to UV radiation. Lifeguards are at an increased risk of excessive sun exposure. OBJECTIVES The main objective of this study was to measure the exposure of Barcelona's beach lifeguards to UV radiation. METHODS Measurements in the work chair were taken every 30min on a typical working day from 10:45 am to 19:15 pm. These measurements were carried out on four different days. These data were used to calculate the erythematous doses received during working hours, as well as those potentially received throughout the summer season. Vitamin D production was also estimated for the four days that the radiation received was measured, and the amount generated was calculated for the entire summer season. RESULTS Exposure to UV radiation among Barcelona lifeguards far exceeds safety limits. In some locations, the exposure to UVB radiation is more than 16 times the minimum erythematous dose for phototype II skin. LIMITATIONS This study assessed the radiation received during only four days. However, is a much higher number than most of the published papers. CONCLUSION Although the health risks of excessive exposure to UV radiation are known, Barcelona's beach lifeguards are insufficiently protected.
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Affiliation(s)
- P Giavedoni
- Department of Dermatology, ICMiD (Institut Clínic de Medicina i Dermatologia), Spain; University of Barcelona, Barcelona, Spain.
| | - A Combalia
- Department of Dermatology, ICMiD (Institut Clínic de Medicina i Dermatologia), Spain; University of Barcelona, Barcelona, Spain
| | - N Espinosa
- Department of Dermatology, ICMiD (Institut Clínic de Medicina i Dermatologia), Spain; University of Barcelona, Barcelona, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - J Aguilera
- Dermatological Photobiology Laboratory, Medical and Health Research Center, Department of Medicine and Dermatology, University of Málaga, Spain
| | - S Puig
- Department of Dermatology, ICMiD (Institut Clínic de Medicina i Dermatologia), Spain; University of Barcelona, Barcelona, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
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3
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Antúnez-Lay A, Podlipnik S, Carrera C, Potrony M, Tell-Martí G, Badenas C, Puig-Butille JA, Espinosa N, Puig S, Malvehy J. Synchronous primary cutaneous melanomas: a descriptive study of their clinical features, histology, genetic background of the patients and clinical outcomes. J Eur Acad Dermatol Venereol 2022; 36:2364-2372. [PMID: 35882522 DOI: 10.1111/jdv.18467] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 06/30/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND Around 0.5% cutaneous melanoma (CM) patients will present with synchronous melanomas when first seen. Moreover, 26%-40% of patients with multiple primary melanomas present with synchronous lesions. OBJECTIVES To assess the prevalence, clinical and histopathological characteristics, germline mutations and outcome in patients with synchronous melanoma. METHODS Clinical and histopathological data from 4703 melanoma patients were included. Clinical, histological and genetic mutational status information was analyzed. Kaplan-Meier curves were used to investigate survival outcomes. RESULTS A total of 144 patients (3.06%) presented simultaneously with 2 or more primary melanomas. During follow-up, 25.7% of patients with synchronous melanoma developed a new primary melanoma compared to 8.6% of patients diagnosed with single melanoma (p < 0.001). Germinal CDKN2A mutations were identified in 10.7% of patients with synchronous melanomas and genetic variants in MC1R in 72%. No significant differences in all survival outcomes between patients with synchronous melanomas and single melanomas were found. CONCLUSION Synchronous melanomas are more frequent than previously reported and are more frequent in older patients compared to single melanomas. Moreover, these patients have a higher risk of developing a new primary melanoma during follow-up and have higher rates of germline susceptibility variants. Nevertheless, these findings were not associated with worse outcomes.
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Affiliation(s)
- A Antúnez-Lay
- Department of Dermatology, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona University, Spain
| | - S Podlipnik
- Department of Dermatology, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona University, Spain
| | - C Carrera
- Department of Dermatology, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona University, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Barcelona, Spain
| | - M Potrony
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Barcelona, Spain.,Biochemistry and Molecular Genetics Department, Hospital Clínic de Barcelona, IDIBAPS, University of Barcelona, Spain
| | - G Tell-Martí
- Department of Dermatology, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona University, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Barcelona, Spain
| | - C Badenas
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Barcelona, Spain.,Biochemistry and Molecular Genetics Department, Hospital Clínic de Barcelona, IDIBAPS, University of Barcelona, Spain
| | - J A Puig-Butille
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Barcelona, Spain.,Molecular Biology CORE. Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona University, Spain
| | - N Espinosa
- Department of Dermatology, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona University, Spain
| | - S Puig
- Department of Dermatology, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona University, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Barcelona, Spain
| | - J Malvehy
- Department of Dermatology, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona University, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Barcelona, Spain
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Jornet N, Valverde I, Espinosa N, Latorre-Mussoll A, Carrasco de Fez P, Delgado P, Perez-Alija J, Gallego P, Ruiz A, Adria M, Simon P, Ribas Morales M. PO-1365: EPID 2D transit In Vivo Dosimetry: Can relevant anatomy and positioning differences be detected? Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01384-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Espinosa N, Coral Gallart A, Bermejo Martinez S, Nolla Nieto X, Gomez De Segura Melcon G, Mancera Soto M, Lizondo Gisbert M, Jornet Sala N. PO-1846: Inter-faction reproducibility of organs at risk in prostate and rectum RT treatments. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01864-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Rivero‐Juarez A, Tellez F, Castaño‐Carracedo M, Merino D, Espinosa N, Santos J, Macias J, Paniagua‐García M, Zapata‐Lopez A, Collado A, Gómez‐Vidal MA, Perez‐Stachowski J, Muñoz‐Medina L, Fernandez‐Fuertes E, Rivero A. Parenteral drug use as the main barrier to hepatitis C treatment uptake inHIV‐infected patients. HIV Med 2019; 20:359-367. [DOI: 10.1111/hiv.12715] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2018] [Indexed: 12/18/2022]
Affiliation(s)
- A Rivero‐Juarez
- Infectious Diseases Unit Instituto Maimonides de Investigación Biomédica de Córdoba (IMIBIC) Hospital Universitario Reina Sofía de Córdoba Universidad de Córdoba Córdoba Spain
| | - F Tellez
- Infectious Diseases Unit Hospital Universitario de Puerto Real Instituto de Investigación e Innovación en Ciencias Biomédicas de la Provincia de Cádiz Universidad de Cádiz Cádiz Spain
| | - M Castaño‐Carracedo
- Infectious Diseases Unit Hospital Regional Universitario de Málaga Málaga Spain
| | - D Merino
- Infectious Diseases Unit Hospitales Juan Ramón Jiménez e Infanta Elena de Huelva Huelva Spain
| | - N Espinosa
- Infectious Diseases Unit Hospital Universitario Virgen del Rocio Instituto de Biomedicina de Sevilla (iBiS) Sevilla Spain
| | - J Santos
- Infectious Diseases Unit Hospital Universitario Virgen de la Victoria Complejo Hospitalario Provincial de Málaga Málaga Spain
| | - J Macias
- Infectious Diseases Unit Hospital Universitario de Valme Instituto de Biomedicina de Sevilla (iBiS) Sevilla Spain
| | - M Paniagua‐García
- Infectious Diseases Unit Hospital Universitario Virgen Macarena Instituto de Biomedicina de Sevilla (iBiS) Sevilla Spain
| | | | - A Collado
- Infectious Diseases Unit Complejo Hospitalario Torrecárdenas Almería Spain
| | - MA Gómez‐Vidal
- Infectious Diseases Unit Complejo Hospitalario de Jaén Jaén Spain
| | | | - L Muñoz‐Medina
- Infectious Diseases Unit Hospital Universitario San Cecilio Granada Spain
| | | | - A Rivero
- Infectious Diseases Unit Instituto Maimonides de Investigación Biomédica de Córdoba (IMIBIC) Hospital Universitario Reina Sofía de Córdoba Universidad de Córdoba Córdoba Spain
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Lizondo M, Latorre-Musoll A, Espinosa N, Coral A, Cases C, Jornet N, Carrasco P, Delgado-Tapia P, Ruiz-Martinez A, Valverde-Pascual I, Barcelo M, Ribas M. PO-0918 Optimal parameters to perform the Pseudo Skin-Flash on VMAT on breast radiotherapy. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31338-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Coral A, Espinosa N, Latorre A, Bermejo S, Nolla X, De Segura G, Diaz C, Mancera M. EP-2176 Analysis of inter-fraction tumor position variability in lung SBRT. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32596-4] [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: 10/26/2022]
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Lucero Y, Oyarzún A, O'Ryan M, Quera R, Espinosa N, Valenzuela R, Simian D, Alcalde E, Arce C, Farfán MJ, Vergara AF, Gajardo I, Mendez J, Carrasco J, Errázuriz G, González M, Ossa JC, Maiza E, Perez-Bravo F, Castro M, Araya M. Corrigendum: Helicobacter pylori cagA+ Is Associated with Milder Duodenal Histological Changes in Chilean Celiac Patients. Front Cell Infect Microbiol 2017; 7:427. [PMID: 28983475 PMCID: PMC5627282 DOI: 10.3389/fcimb.2017.00427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 09/19/2017] [Indexed: 11/13/2022] Open
Abstract
[This corrects the article on p. 376 in vol. 7, PMID: 28879170.].
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Affiliation(s)
- Yalda Lucero
- Department of Pediatrics and Pediatric Surgery, Faculty of Medicine, University of Chile, Santiago, Chile.,Microbiology and Micology Program, ICBM, Faculty of Medicine, University of Chile, Santiago, Chile.,Pediatric Gastroenterology Unit, Department of Pediatrics, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - Amaya Oyarzún
- Laboratory of Immunegenetics, Institute of Nutrition and Food Technology, University of Chile, Santiago, Chile
| | - Miguel O'Ryan
- Microbiology and Micology Program, ICBM, Faculty of Medicine, University of Chile, Santiago, Chile.,Millenium Institute of Immunology and Immunotherapy, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Rodrigo Quera
- Department of Gastroenterology, Clínica Las Condes, Santiago, Chile
| | | | - Romina Valenzuela
- Department of Pediatrics and Pediatric Surgery, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Daniela Simian
- Department of Gastroenterology, Clínica Las Condes, Santiago, Chile
| | | | - Claudio Arce
- Hospital Dr. Luis Calvo Mackenna, Santiago, Chile
| | - Mauricio J Farfán
- Department of Pediatrics and Pediatric Surgery, Faculty of Medicine, University of Chile, Santiago, Chile.,Hospital Dr. Luis Calvo Mackenna, Santiago, Chile
| | | | - Iván Gajardo
- Department of Pediatrics and Pediatric Surgery, Faculty of Medicine, University of Chile, Santiago, Chile
| | | | | | - Germán Errázuriz
- Department of Gastroenterology, Clínica Las Condes, Santiago, Chile
| | | | - Juan C Ossa
- Department of Pediatrics and Pediatric Surgery, Faculty of Medicine, University of Chile, Santiago, Chile
| | | | | | - Magdalena Castro
- Department of Gastroenterology, Clínica Las Condes, Santiago, Chile
| | - Magdalena Araya
- Laboratory of Immunegenetics, Institute of Nutrition and Food Technology, University of Chile, Santiago, Chile
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Lucero Y, Oyarzún A, O'Ryan M, Quera R, Espinosa N, Valenzuela R, Simian D, Alcalde E, Arce C, Farfán MJ, Vergara AF, Gajardo I, Mendez J, Carrasco J, Errázuriz G, Gonzalez M, Ossa JC, Maiza E, Perez-Bravo F, Castro M, Araya M. Helicobacter pylori cagA+ Is Associated with Milder Duodenal Histological Changes in Chilean Celiac Patients. Front Cell Infect Microbiol 2017; 7:376. [PMID: 28879170 PMCID: PMC5572207 DOI: 10.3389/fcimb.2017.00376] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 08/08/2017] [Indexed: 12/14/2022] Open
Abstract
HIGHLIGHTSWhat is already known about this subject? Celiac disease (CD) has a high clinical and histological diversity and the mechanisms underlying this phenomenon remain elusive. H. pylori is a bacterium that chronically infect gastric and duodenal mucosa activating both a Th1/Th17 and T-reg pathways. The role of H. pylori (and the effect of their virulence factors) in CD have not yet completely elucidated. What are the new findings? cagA+ H. pylori strains are associated to milder histological damage in infected CD patients. In active-CD patients the presence of cagA+ H. pylori is associated to an increase in T-reg markers, contrasting with a downregulation in cagA+ infected potential-CD individuals. How might it impact on clinical practice in the foreseeable future? The identification of microbiological factors that could modulate inflammation and clinical expression of CD may be used in the future as preventive strategies or as supplementary treatment in patients that cannot achieve complete remission, contributing to the better care of these patients.
Background: Mechanisms underlying the high clinical and histological diversity of celiac disease (CD) remain elusive. Helicobacter pylori (Hp) chronically infects gastric and duodenal mucosa and has been associated with protection against some immune-mediated conditions, but its role (specifically of cagA+ strains) in CD is unclear. Objective: To assess the relationship between gastric Hp infection (cagA+ strains) and duodenal histological damage in patients with CD. Design: Case-control study including patients with active-CD, potential-CD and non-celiac individuals. Clinical presentation, HLA genotype, Hp/cagA gene detection in gastric mucosa, duodenal histology, Foxp3 positive cells and TGF-β expression in duodenal lamina propria were analyzed. Results: We recruited 116 patients, 29 active-CD, 37 potential-CD, and 50 non-CD controls. Hp detection was similar in the three groups (~30–40%), but cagA+ strains were more common in infected potential-CD than in active-CD (10/11 vs. 4/10; p = 0.020) and non-CD (10/20; p = 0.025). Among active-CD patients, Foxp3 positivity was significantly higher in subjects with cagA+ Hp+ compared to cagA- Hp+ (p < 0.01) and Hp- (p < 0.01). In cagA+ Hp+ individuals, Foxp3 positivity was also higher comparing active- to potential-CD (p < 0.01). TGF-β expression in duodenum was similar in active-CD with cagA+ Hp+ compared to Hp- and was significantly downregulated in cagA+ potential-CD subjects compared to other groups. Conclusion: Hp infection rates were similar among individuals with/without CD, but infection with cagA+ strains was associated with milder histological damage in celiac patients infected by Hp, and in active-CD cases with higher expression of T-reg markers. Results suggest that infection by cagA+ Hp may be protective for CD progression, or conversely, that these strains are prone to colonize intestinal mucosa with less severe damage.
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Affiliation(s)
- Yalda Lucero
- Hospital Dr. Luis Calvo MackennaSantiago, Chile.,Department of Pediatrics and Pediatric Surgery, Faculty of Medicine, University of ChileSantiago, Chile.,Microbiology and Micology Program, Faculty of Medicine, University of ChileSantiago, Chile
| | - Amaya Oyarzún
- Laboratory of Immunegenetics, Institute of Nutrition and Food Technology, University of ChileSantiago, Chile
| | - Miguel O'Ryan
- Microbiology and Micology Program, Faculty of Medicine, University of ChileSantiago, Chile.,Millenium Institute of Immunology and Immunotherapy, Faculty of Medicine, University of ChileSantiago, Chile
| | - Rodrigo Quera
- Department of Gastroenterology, Clínica Las CondesSantiago, Chile
| | | | - Romina Valenzuela
- Department of Pediatrics and Pediatric Surgery, Faculty of Medicine, University of ChileSantiago, Chile
| | - Daniela Simian
- Department of Gastroenterology, Clínica Las CondesSantiago, Chile
| | | | | | - Mauricio J Farfán
- Hospital Dr. Luis Calvo MackennaSantiago, Chile.,Department of Pediatrics and Pediatric Surgery, Faculty of Medicine, University of ChileSantiago, Chile
| | | | - Iván Gajardo
- Department of Pediatrics and Pediatric Surgery, Faculty of Medicine, University of ChileSantiago, Chile
| | | | | | - Germán Errázuriz
- Department of Gastroenterology, Clínica Las CondesSantiago, Chile
| | | | - Juan C Ossa
- Hospital Dr. Luis Calvo MackennaSantiago, Chile.,Department of Pediatrics and Pediatric Surgery, Faculty of Medicine, University of ChileSantiago, Chile
| | | | | | - Magdalena Castro
- Millenium Institute of Immunology and Immunotherapy, Faculty of Medicine, University of ChileSantiago, Chile
| | - Magdalena Araya
- Microbiology and Micology Program, Faculty of Medicine, University of ChileSantiago, Chile
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Abdo A, Pérez-Bernal J, Hinojosa R, Porras F, Castellanos R, Gómez F, Gutiérrez J, Castellanos A, Leal G, Espinosa N, Gómez-Bravo M. Cerebral Hemodynamics Patterns by Transcranial Doppler in Patients With Acute Liver Failure. Transplant Proc 2016; 47:2647-9. [PMID: 26680061 DOI: 10.1016/j.transproceed.2015.10.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Revised: 09/26/2015] [Accepted: 10/06/2015] [Indexed: 01/08/2023]
Abstract
INTRODUCTION About half of patients with acute liver failure (ALF) show clinical signs of cerebral edema and intracranial hypertension. Neuroimaging diagnostics and electroencephalography have poor correlation with intracranial pressure measurement. OBJECTIVE The objective of this study was to characterize the cerebral hemodynamics patterns with transcranial Doppler (TCD) sonography in patients with ALF. METHOD We studied 21 patients diagnosed with ALF, admitted to the intensive care unit (ICU) at the Centro de Investigaciones Médico Quirúrgicas of Cuba. All of these patients had a TCD performed on arrival at ICU, evaluating the following: systolic (SV), diastolic (DV), and medium (MV) flows velocities and pulsatility index (PI) in right middle cerebral artery (RMCA) via temporal windows. RESULTS The sonographic patterns of cerebral hemodynamics were as follows: low-flow, 12 patients (57.1%); high resistance, 5 patients (23.8%); and hyperemic, 4 patients (19%). Patients who died while waiting had lower MV RMCA (56.1 vs 58.1 cm/s) and higher PI (1.71 vs 1.41) than patients who could undergo transplantation (P = .800 and P = .787, respectively). CONCLUSIONS In patients diagnosed with ALF admitted to the ICU the predominating cerebral hemodynamic pattern was low-flow with resistance increase. The TCD was shown to be a useful tool in the initial evaluation for prognosis and treatment.
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Affiliation(s)
- A Abdo
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba.
| | - J Pérez-Bernal
- Intensive Care Unit, Hospital Universitario Virgen del Rocío, Sevilla, España
| | - R Hinojosa
- Intensive Care Unit, Hospital Universitario Virgen del Rocío, Sevilla, España
| | - F Porras
- Intensive Care Unit, Hospital Universitario Virgen del Rocío, Sevilla, España
| | - R Castellanos
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba
| | - F Gómez
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba
| | - J Gutiérrez
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba
| | - A Castellanos
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba
| | - G Leal
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba
| | - N Espinosa
- Intensive Care Unit, Centro de Investigaciones Médico Quirúrgicas, La Habana, Cuba
| | - M Gómez-Bravo
- Liver Transplantation Unit, Hospital Universitario Virgen del Rocío, Sevilla, España
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Abstract
INTRODUCTION Peroneal tendon instability goes often mis- or undiagnosed in the acute setting of evaluation of ankle sprains. The current article provides a concise overview regarding peroneal tendon instability. METHODS A proper history, clinical assessment and imaging help to establish the correct diagnosis. Conventional radiography, ultrasound, magnetic resonance imaging and sometimes computed tomography may help to elucidate the pattern of injury. RESULTS Nonoperative treatment can be considered in the acute setting. However, high failure rates up to 50 % have been reported in the literature. This is even better reflected in the chronic stage of peroneal instability, in which most of the patients need surgical treatment. In contrast, surgical treatment attempts to restore structural stabilization of the peroneal tendon and retinacular complex. The simple reconstruction and repair of the damaged retinacular structures and tendons achieve excellent results. In patients with structural abnormalities of the retromalleolar groove, groove-deepening procedures may be considered. Most of chronic personal tendon instabilities need to be addressed by surgery due to the frustrating results obtained by nonoperative measures. However, reconstruction of the tendinous and retinacular structures can yield good-to-excellent outcomes.
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Affiliation(s)
- N Espinosa
- Institute for Foot and Ankle Reconstruction Zurich, Kappelistrasse 7, 8002, Zurich, Switzerland.
| | - M A Maurer
- Institute for Foot and Ankle Reconstruction Zurich, Kappelistrasse 7, 8002, Zurich, Switzerland
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Araya M, Oyarzun A, Lucero Y, Espinosa N, Pérez-Bravo F. DQ2, DQ7 and DQ8 Distribution and Clinical Manifestations in Celiac Cases and Their First-Degree Relatives. Nutrients 2015; 7:4955-65. [PMID: 26096569 PMCID: PMC4488825 DOI: 10.3390/nu7064955] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 05/29/2015] [Accepted: 06/05/2015] [Indexed: 12/13/2022] Open
Abstract
HLA-linked genes are relevant to celiac disease (CD); the potential genetic differences present worldwide are not fully understood. Previous results suggest that the distribution of HLA-DQ2/DQ7/DQ8 in Chile may differ from that in Europe and North America. In celiac patients and their first-degree relatives (FDRS), we assessed their clinical, serological and histological characteristics, determined HLA-DQ2, HLA-DQ7 and HLA-DQ8 alleles and genotypes, and evaluated the relations between them. A total of 222 individuals were assessed (56 cases, 166 FDRs). 16.9% of FDRs were tTG positive; 53.6% of them showed overweight/obesity and 3% undernourishment; they spontaneously declared being asymptomatic, but detailed questioning revealed that 60.7% experienced symptoms, which had not been investigated. DQ2 was present in 53.9% and 43.9.0% of cases and FDRs (p < 0.05). The most frequent genotype distribution was DQ2/DQ7 (fr 0.392 (cases) and 0.248 (FDRs), respectively, p < 0.02). The next most common genotypes were HLA-DQ2/DQ8 (fr 0.236 in FDRs and 0.176 in cases, p < 0.05). 3.92% cases were not HLA-DQ2/DQ8 carriers. Among tTG positive FDRs, 57.4%, 22.3% and 20.2% carried DQ2, DQ7 and DQ8, respectively. In cases, 72.7% of the biopsies classified Marsh ≥ 3 carried at least one DQ2; 91.7% of DQ2/DQ2 and 88.3% of DQ2/DQ7 were Marsh ≥ 3. Thus, DQ2 frequency is lower than reported; the higher frequency found for DQ8 and DQ7 concur with recent publications from Argentine and Brazil. These results suggest that although CD may manifest clinically in ways similar to those described in other populations, some genetic peculiarities in this region deserve further study.
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Affiliation(s)
- Magdalena Araya
- Human Nutrition, Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile.
| | - Amaya Oyarzun
- Human Nutrition, Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile.
| | - Yalda Lucero
- Department of Pediatrics, Faculty of Medicine, University of Chile, Santiago, Chile.
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Vargas M, Cabezali J, Espinosa N, Barrullas S, Diaz C, Guerra P, Coral A, Arroyo E, Suriñach F, Rosás V. EP-1618: Study of the capacity to keep the treatment position during radiotherapy in palliative patients. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)41610-x] [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]
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Espinosa N, Cudeiro J, Mariño J. Spectroscopic measurement of cortical nitric oxide release induced by ascending activation. Neuroscience 2015; 285:303-11. [DOI: 10.1016/j.neuroscience.2014.11.028] [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] [Received: 03/18/2014] [Revised: 11/17/2014] [Accepted: 11/17/2014] [Indexed: 10/24/2022]
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Podzamczer D, Imaz A, Perez I, Viciana P, Valencia E, Curto J, Martin T, Castano M, Rojas J, Espinosa N, Moreno V, Asensi V, Iribarren JA, Clotet B, Force L, Bachiller P, Knobel H, Lopez Bernaldo De Quiros JC, Blanco JR, Rozas N, Vergas J, Ocampo A, Camacho A, Flores J, Gomez-Sirvent JL. Abacavir/lamivudine plus darunavir/ritonavir in routine clinical practice: a multicentre experience in antiretroviral therapy-naive and -experienced patients. J Antimicrob Chemother 2014; 69:2536-40. [DOI: 10.1093/jac/dku157] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Li F, Ozkaya E, Akula K, De Sutter P, Oktay K, Rives N, Milazzo JP, Perdrix A, Bironneau A, Travers A, Mace B, Liard A, Bachy B, Elbaz V, Vannier JP, Delle Piane L, Dolfin E, Salvagno F, Molinari E, Gennarelli G, Marchino GL, Revelli A, Durmaz A, Komurcu N, Sanchez-Serrano M, Dolmans MM, Greve T, Pellicer A, Donnez J, Yding Andersen C, Vlismas A, Sabatini L, Edwards C, Mohamed M, Caragia A, Pepas L, Al-Shawaf T, Sanhueza P, Carrasco I, Rios M, Donoso P, Salinas R, Enriquez R, Saez V, Gonzalez P, Aydin Y, Cepni I, Ocal P, Aydin B, Aydogan B, Salahov R, Idil M, Akman L, Akdogan A, Sahin G, Terek C, Ozsaran A, Dikmen Y, Goker ENT, Tavmergen E, Grynberg M, Poulain M, Sebag Peyrelevade S, Treves R, Frydman N, Fanchin R, Borras A, Manau D, Espinosa N, Calafell JM, Moreno V, Civico S, Fabregues F, Balasch J, Kim MK, Lee DR, Cha SK, Lee WS, Kim YS, Won HJ, Han JE, Yoon TK, Torgal M, Bravo I, Metello JL, Sanches F, Sa e Melo P, Silber S, Ernst E, Andersen C, Naasan M, Oluyede G, Kirkham C, Ciprike V, Mocanu E, Martinez-Madrid B, Encinas T, Tinetti P, Jimenez L, Gilabert JA, Picazo RA, Wiweko B, Maidarti M, Bastings L, Liebenthron J, Westphal JR, Beerendonk CCM, Gerritse R, Braat DDM, Montag M, Peek R, Bernstein S, Wiesemann C, Karimi M, Omani Samani R, Labied S, Delforge YVES, Munaut C, Blacher S, Colige A, Delcombel R, Henry L, Fransolet M, Perrier d'Hauterive S, Nisolle M, Foidart JM, Sakai H, Sakamoto E, Kuchiki M, Doshida M, Toya M, Kyono K, Kyoya T, Ishikawa T, Nakamura Y, Shibuya Y, Tomiyama T, Kyono K, Sakamoto E, Sakai H, Kuchiki M, Sato K, Nakajo Y, Kyono K, Hashemifesharaki M, Falcone P, Lofiego V, Pisoni M, Ricci S, Pilla F, Mereu L, Mencaglia L, Westphal JR, Gerritse R, Beerendonk CCM, Bastings L, Braat DDM, Peek R, Schmidt KT, Nyboe Andersen A, Yding Andersen C, Noyes N, Melzer K, Fino ME, Druckenmiller S, Smith M, Knopman JM, Devesa M, Coroleu B, Tur R, Gonzalez C, Rodriguez I, Veiga A, Barri PN, Courbiere B, Decanter C, Bringer-Deutsch S, Rives N, Mirallie S, Pech JC, De Ziegler D, Carre-Pigeon F, May-Panloup P, Sifer C, Amice V, Schweitzer T, Porcu-Buisson G, Gook D, Archer J, Edgar DH, Maldonado I, Varghese A, Lopez P, Cervantes E, Gongora A, Sharma R, Granja J, Marquez MT, Agarwal A. MALE AND FEMALE FERTILITY PRESERVATION. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.82] [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: 11/14/2022] Open
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Blumenthal S, Borgeat A, Neudörfer C, Bertolini R, Espinosa N, Aguirre J. Additional femoral catheter in combination with popliteal catheter for analgesia after major ankle surgery. Br J Anaesth 2011; 106:387-93. [DOI: 10.1093/bja/aeq365] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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20
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Espinosa N, Klammer G. Treatment of ankle osteoarthritis: arthrodesis versus total ankle replacement. Eur J Trauma Emerg Surg 2010; 36:525-35. [PMID: 26816307 DOI: 10.1007/s00068-010-0058-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Accepted: 10/07/2010] [Indexed: 01/15/2023]
Abstract
While ankle arthrodesis has remained the gold standard treatment for symptomatic primary, secondary, and posttraumatic ankle arthritis, more recently, total ankle replacement (TAR) has seen considerable improvement in terms of biomechanics, function, and complication rates. However, while in the long-term degeneration of the adjacent joints is almost always found on radiographs after ankle arthrodesis, the longevity of TAR is still insufficient and does not match that of total knee and hip joints. The current review article focuses on the treatment of ankle arthritis by means of arthrodesis and TAR.
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Affiliation(s)
- N Espinosa
- Department of Orthopaedic Surgery, University of Zurich Hospital, University of Zurich, Balgrist, Forchstrasse 340, 8008, Zurich, Switzerland.
| | - G Klammer
- Department of Orthopaedic Surgery, University of Zurich Hospital, University of Zurich, Balgrist, Forchstrasse 340, 8008, Zurich, Switzerland
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21
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Abstract
BACKGROUND A major cause of the limited longevity of total ankle replacements is premature polyethylene component wear, which can be induced by high joint contact pressures. We implemented a computational model to parametrically explore the hypothesis that intercomponent positioning deviating from the manufacturer's recommendations can result in pressure distributions that may predispose to wear of the polyethylene insert. We also investigated the hypothesis that a modern mobile-bearing design may be able to better compensate for imposed misalignments compared with an early two-component design. METHODS Two finite element models of total ankle replacement prostheses were built to quantify peak and average contact pressures on the polyethylene insert surfaces. Models were validated by biomechanical testing of the two implant designs with use of pressure-sensitive film. The validated models were configured to replicate three potential misalignments with the most CLINICAL RELEVANCE version of the tibial component, version of the talar component, and relative component rotation of the two-component design. The misalignments were simulated with use of the computer model with physiologically relevant boundary loads. RESULTS With use of the manufacturer's guidelines for positioning of the two-component design, the predicted average joint contact pressures exceeded the yield stress of polyethylene (18 to 20 MPa). Pressure magnitudes increased as implant alignment was systematically deviated from this reference position. The three-component design showed lower-magnitude contact pressures in the standard position (<10 MPa) and was generally less sensitive to misalignment. Both implant systems were sensitive to version misalignment. CONCLUSIONS In the tested implants, a highly congruent mobile-bearing total ankle replacement design yields more evenly distributed and lower-magnitude joint contact pressures than a less congruent design. Although the mobile-bearing implant reduced susceptibility to aberrant joint contact characteristics that were induced by misalignment, predicted average contact stresses reached the yield stress of polyethylene for imposed version misalignments of >5 degrees.
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Affiliation(s)
- N Espinosa
- Department of Orthopedics, Balgrist Hospital, University of Zurich, Zurich, Switzerland
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Maquieira GJ, Espinosa N, Gerber C, Eid K. Non-operative treatment of large anterior glenoid rim fractures after traumatic anterior dislocation of the shoulder. ACTA ACUST UNITED AC 2008; 89:1347-51. [PMID: 17957076 DOI: 10.1302/0301-620x.89b10.19273] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The generally-accepted treatment for large, displaced fractures of the glenoid associated with traumatic anterior dislocation of the shoulder is operative repair. In this study, 14 consecutive patients with large (> 5 mm), displaced (> 2 mm) anteroinferior glenoid rim fractures were treated non-operatively if post-reduction radiographs showed a centred glenohumeral joint. After a mean follow-up of 5.6 years (2.8 to 8.4), the mean Constant score and subjective shoulder value were 98% (90% to 100%) and 97% (90% to 100%), respectively. There were no redislocations or subluxations, and the apprehension test was negative. All fragments healed with an average intra-articular step of 3.0 mm (0.5 to 11). No patient had symptoms of osteoarthritis, which was mild in two shoulders and moderate in one. Traumatic anterior dislocation of the shoulder, associated with a large displaced glenoid rim fracture can be successfully treated non-operatively, providing the glenohumeral joint is concentrically reduced on the anteroposterior radiograph.
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Affiliation(s)
- G J Maquieira
- Department of Orthopaedics, Uniklinik Balgrist, Forchstrasse 340, 8008 Zurich, Switzerland
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Michitte P, De Prado R, Espinosa N, Gauvrit C. Glyphosate resistance in a Chilean Lolium multiflorum. Commun Agric Appl Biol Sci 2005; 70:507-13. [PMID: 16637223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Lolium multiflorum (Italian ryegrass) has recently demonstrated itself to be poorly controlled with glyphosate in cereal crops of South Chile. The concentration of glyphosate necessary to reduce shoot length by 50% (ED50) in seedlings, after eight days of root contact was 7.3-fold in the resistant Vil-1 than in the susceptible (S) biotype. The obtained spray retention values were higher on S than the resistant (Vil-1) biotype. Contact angles measured on the adaxial surface of S and Vil-1 were similar. However, on the abaxial surface contact angles were of 63 degrees on Vil-1 as compared to 42 degrees on S. A greater glyphosate uptake was observed through the abaxial surface of S. Regarding translocation, glyphosate accumulated mainly in the tip of the treated leaf of Vil-1, 24 h after treatment. It was afterwards also well distributed to the rest of the leaves and roots, as in the susceptible biotype. Nevertheless, 14C-glyphosate remained higher in the foliar apex of Vil-1. Hence, resistance to glyphosate by the Vil-1 Lolium multflorum biotype seems to involve a lower uptake through the abaxial leaf surface and a different migration pattern.
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Affiliation(s)
- P Michitte
- Departamento de Química Agrícola, Universidad de Córdoba, España
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24
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Hernández O, Espinosa N, Pérez-González D, Malmierca MS. The inferior colliculus of the rat: A quantitative analysis of monaural frequency response areas. Neuroscience 2005; 132:203-17. [PMID: 15780479 DOI: 10.1016/j.neuroscience.2005.01.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/06/2005] [Indexed: 11/27/2022]
Abstract
Frequency response areas (FRAs) were measured for 237 single units in the inferior colliculus (IC) of urethane-anesthetized pigmented rats using monaural pure-tone stimulation. Based on qualitative criteria [J Neurosci 21 (2001) 7303], FRAs were classified as V-shaped in 69% of neurons, non-V-shaped in 29%, and unclassifiable in the remaining 2%. Non-V-shaped FRAs were heterogeneous, comprising a number of subtypes including narrow, closed, low- and high-tilt, multipeaked, U-shaped, mosaic and inhibitory. To complement this subjective classification, we applied quantitative measures used by others (e.g. [J Neurophysiol 84 (2000) 1012]), including the inverse slope of the upper and lower FRA borders, Q-values, and other measures of bandwidth. The results suggest that FRAs in the rat IC are best described as forming a continuous distribution among subtypes, rather than clustering into discrete categories. Moreover, there is a broad range of frequency tuning characteristics and FRA types across the entire frequency spectrum. Within this general pattern, however, there are some frequency-specific differences in FRA type distribution. The relative proportion of V-shaped FRAs was greatest at the high and low ends of the auditory range, with the highest proportion of non-V-shaped FRAs in the mid-range from 6 to 12 kHz. For most neurons with multipeaked FRAs, the peak frequencies were not harmonically related. Frequency tuning in the pigmented rat IC is generally similar to that in other species. Comparison of Q values across auditory nuclei shows little evidence that FRAs are sharpened at levels above the auditory nerve. Rather, there is a broad range of frequency tuning properties at each level.
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Affiliation(s)
- O Hernández
- Auditory Neurophysiology Unit, Laboratory for the Neurobiology of Hearing, Institute of Neuroscience of Castilla y León and Faculty of Medicine, University of Salamanca, Salamanca, Spain
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Abstract
The optimal treatment of shoulder stiffness remains controversial. The current authors reviewed the results of arthroscopic capsular release of 45 stiff shoulders in 45 patients that was done after the patients did not respond to conservative treatment. There were nine idiopathic frozen shoulders, 21 that had postoperative stiffness, and 15 shoulders with stiffness after trauma. At a mean followup of 26 months (minimum, 12 months), arthroscopic capsular release improved the subjective shoulder value from 25% to 68% and the age- and gender-adjusted Constant-Murley score from 41% to 75%. Pain improved from 4.7 to 10.9 of 15 points. Active, pain-free anterior elevation increased from 90 degrees to 128 degrees and external rotation increased from 14 degrees to 31 degrees. The quality of sleep improved from 0.5 to 1.6 on a two-point scale. The only improvement that did not reach statistical significance was the improvement in the ability to work. A retrospective analysis of the results stratified according to the etiology of stiffness showed that the outcome after treatment of idiopathic stiffness was better than after postoperative stiffness and that the results of treatment for posttraumatic stiffness were least favorable. The difference between preoperative state and followup, however, was not statistically significantly different from one group to another. All groups improved significantly and to a similar degree but the final outcome was related to the initial degree of disability. Arthroscopic release is an effective method for treatment of shoulder stiffness; however, the ultimate outcome is related directly to the severity of stiffness regardless of the etiology.
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Affiliation(s)
- C Gerber
- Department of Orthopedics, University of Zürich, Balgrist, Switzerland
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Espinosa N, Hernández R, López-Griego L, Arroyo R, López-Villaseñor I. Differences between coding and non-coding regions in the Trichomonas vaginalis genome: an actin gene as a locus model(1). Acta Trop 2001; 78:147-54. [PMID: 11230824 DOI: 10.1016/s0001-706x(00)00180-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The sequence of a cloned genomic fragment of Trichomonas vaginalis containing a complete actin gene was determined. An uninterrupted open reading frame of 1128 nucleotides was found that codes for an actin gene. Two overlapped consensus promoter sequences for T. vaginalis were found 12 nucleotides upstream the actin initiation codon. In addition to actin, two incomplete open reading frames were found at the 5' and 3' ends of the clone. These two sequences are expressed and showed similarity to adenylate cyclase genes and a yeast hypothetical protein. The overall sequence showed a higher G+C content and a lower frequency of repeated sequences in the coding regions when compared with the non-coding regions. A similar unequal nucleotide distribution was found in various T. vaginalis genes retrieved from data bases.
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MESH Headings
- Actins/genetics
- Amino Acid Sequence
- Animals
- Base Composition
- Base Sequence
- Blotting, Northern
- Blotting, Southern
- DNA Probes/chemistry
- DNA, Protozoan/chemistry
- DNA, Protozoan/genetics
- DNA, Protozoan/isolation & purification
- Gene Library
- Genome, Protozoan
- Molecular Sequence Data
- Open Reading Frames
- Polymerase Chain Reaction
- RNA, Protozoan/chemistry
- RNA, Protozoan/genetics
- RNA, Protozoan/isolation & purification
- Repetitive Sequences, Nucleic Acid
- Sequence Analysis, DNA
- Trichomonas vaginalis/chemistry
- Trichomonas vaginalis/genetics
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Affiliation(s)
- N Espinosa
- Departamento de Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Apartado postal 70-228, CP 04510, México D.F., Mexico
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Atria AM, Baggio RF, Espinosa N, Garland MT, Manzur J, Moreno Y, Spodine E. Dichloro- and dibromo[N-(2-pyridylmethylidene)-2-thienylmethylamine-N,N']copper(II) complexes, [CuCl2(C11H10N2S)] and [CuBr2(C11H10N2S)]. Acta Crystallogr C 1994. [DOI: 10.1107/s0108270193012181] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Zollikofer CL, Schoch E, Stuckmann G, Espinosa N, Stiefel M. [Percutaneous transluminal treatment of stenoses and obstructions in the venous system using vascular endoprostheses (stents)]. Schweiz Med Wochenschr 1994; 124:995-1009. [PMID: 7517572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Benign and malignant obstructions of the superior and inferior V. cava and large central veins are often difficult to treat by conservative and surgical means. In this overview we report a new technique which keeps obstructed veins patent by means of percutaneously-inserted metal endoprostheses. The technique allows rapid and lasting relief of the clinical signs of venous inflow obstruction. The high clinical success rate and longterm patency of 70 to 100% in malignant stenoses, and close to 100% in benign obstruction, makes this technique the method of choice for treating superior and inferior inflow obstructions secondary to diseases of the V. cava and the pelvic and brachiocephalic veins. Patients suffering from malignancies benefit in particular from rapid improvement of their quality of life using an effective method with a low complication rate. Vascular stents may also be used in venous outflow stenosis of hemodialysis shunts. However, because of the high recurrence rate secondary to intimal hyperplasia, particularly in peripheral stenoses in the region of the arm, we recommend a conservative attitude. The use of stents is only indicated after one or more trials with conventional balloon angioplasty.
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Tacke J, Antonucci F, Stuckmann G, Mattias P, Espinosa N, Zollikofer CL. [The palliative treatment of venous stenoses in tumor patients with self-expanding vascular prostheses]. ROFO-FORTSCHR RONTG 1994; 160:433-40. [PMID: 7513561 DOI: 10.1055/s-2008-1032454] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
During 53 months 14 patients with tumour-induced obstructions of the superior vena cava (n = 8), the inferior vena cava (n = 2) and iliac veins (n = 4) were treated with self-expandable metallic stents. 21 Wall stents and 5 Gianturco double stents were applied. The follow-up lasted from 2 weeks to 16 months (range = 5.7 months). All patients showed a marked relief of inflow obstruction after stent placement. 6 of 7 patients, who died of their disease during follow-up, were asymptomatic regarding vein obstruction until their death (3 weeks to 16 months). In 6 of 7 still living patients no re-obstruction occurred during follow-up (2 to 16 months). Patency rate was 82%. These results suggest that self-expanding stents are a successful palliative therapy of malignant vein obstructions.
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Affiliation(s)
- J Tacke
- Radiologisches Institut, Kantonsspital Winterthur, Schweiz
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De Carli A, Heer M, Espinosa N, Benz J, Krampf K, Sulser H, Hany A. [Colorectal carcinoma following radiotherapy of gynecological carcinoma]. Schweiz Med Wochenschr 1988; 118:716-21. [PMID: 3133762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
To assess the risk of radiation-induced cancer of the colon we studied 196 patients with a history of radiation treatment for cancer of the female genital system. After a median follow-up of 12.4 years (range 10-15 years) corresponding to 1172 patient-years, 94 (48%) patients were still alive. 84 (89%) of these patients were evaluated for a second primary cancer to the colon. In 38 (45%) colonoscopic examination was performed. 3 patients were found to have a second primary cancer to the colon compared with 0.32 expected (relative risk 9.3) on the basis of rates from the Zürich Tumor Registry. Due to partial long-term survival, patient non-compliance and non-feasibility of colonoscopic examination, only one fourth of all patients initially treated by radiotherapy for cancers of the female genital system were suitable for colon screening. For these high risk women, colorectal tumor screening should be integrated into a gynecologic tumor follow-up.
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Affiliation(s)
- A De Carli
- Medizinische und Chirurgische Klinik, Kantonsspital Winterthur
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Sargent EN, Barbour BH, Espinosa N, Meyers HI. Evaluation of renal function following double dose infusion intravenous cholangiography. Am J Roentgenol Radium Ther Nucl Med 1973; 117:412-8. [PMID: 4685871 DOI: 10.2214/ajr.117.2.412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Herrera JJ, Espinosa N, Cortopassi LO. [The therapeutic community in psychiatry]. Actas Luso Esp Neurol Psiquiatr 1969; 28:100-16. [PMID: 5379460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Muggia A, Espinosa N. [Treatment of acute diarrhea of the infant with a new antibiotic--gentamicin sulfate]. Rev Chil Pediatr 1966; 37:615-20. [PMID: 5986913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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