1
|
Aldunate F, Fajardo A, Ibañez N, Rammauro F, Daghero H, Arce R, Ferla D, Pereira-Gomez M, Salazar C, Iraola G, Pritsch O, Hurtado J, Tenzi J, Bollati-Fogolín M, Bianchi S, Nin N, Moratorio G, Moreno P. What have we learned from a case of convalescent plasma treatment in a two-time kidney transplant recipient COVID-19 patient? A case report from the perspective of viral load evolution and immune response. Front Nephrol 2023; 3:1132763. [PMID: 37675346 PMCID: PMC10479756 DOI: 10.3389/fneph.2023.1132763] [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] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 06/05/2023] [Indexed: 09/08/2023]
Abstract
Coronavirus disease 2019 (COVID-19), an infectious disease caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus, can have a wide range of clinical manifestations, ranging from asymptomatic disease to potentially life-threatening complications. Convalescent plasma therapy has been proposed as an effective alternative for the treatment of severe cases. The aim of this study was to follow a two-time renal transplant patient with severe COVID-19 treated with convalescent plasma over time from an immunologic and virologic perspective. A 42-year-old female patient, who was a two-time kidney transplant recipient, was hospitalized with COVID-19. Due to worsening respiratory symptoms, she was admitted to the intensive care unit, where she received two doses of convalescent plasma. We analyzed the dynamics of viral load in nasopharyngeal swab, saliva, and tracheal aspirate samples, before and after convalescent plasma transfusion. The levels of pro-inflammatory cytokines and antibody titers were also measured in serum samples. A significant decrease in viral load was observed after treatment in the saliva and nasopharyngeal swab samples, and a slight decrease was observed in tracheal aspirate samples. In addition, we found evidence of an increase in antibody titers after transfusion, accompanied by a decrease in the levels of several cytokines responsible for cytokine storm.
Collapse
Affiliation(s)
- Fabian Aldunate
- Laboratorio de Virología Molecular, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur Montevideo, Montevideo, Uruguay
| | - Alvaro Fajardo
- Laboratorio de Virología Molecular, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur Montevideo, Montevideo, Uruguay
| | - Natalia Ibañez
- Laboratorio de Inmunovirología, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Florencia Rammauro
- Laboratorio de Inmunovirología, Institut Pasteur de Montevideo, Montevideo, Uruguay
- Departamento de Inmunobiología, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Hellen Daghero
- Cell Biology Unit, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Rodrigo Arce
- Laboratorio de Virología Molecular, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur Montevideo, Montevideo, Uruguay
| | - Diego Ferla
- Laboratorio de Virología Molecular, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur Montevideo, Montevideo, Uruguay
| | - Marianoel Pereira-Gomez
- Laboratorio de Virología Molecular, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur Montevideo, Montevideo, Uruguay
| | - Cecilia Salazar
- Laboratorio de Genómica Microbiana, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Gregorio Iraola
- Laboratorio de Genómica Microbiana, Institut Pasteur de Montevideo, Montevideo, Uruguay
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Hinxton, United Kingdom
| | - Otto Pritsch
- Laboratorio de Inmunovirología, Institut Pasteur de Montevideo, Montevideo, Uruguay
- Departamento de Inmunobiología, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Javier Hurtado
- Unidad de Cuidados Intensivos, Hospital Español “Juan José Crottoggini”, Administración de Servicios de Salud del Estado, Montevideo, Uruguay
| | - Jordan Tenzi
- Unidad de Cuidados Intensivos, Hospital Español “Juan José Crottoggini”, Administración de Servicios de Salud del Estado, Montevideo, Uruguay
| | | | - Sergio Bianchi
- Laboratorio de Biomarcadores Moleculares, Departamento de Fisiopatología, Hospital de Clínicas, Universidad de la República, Montevideo, Uruguay
- Laboratorio de Genómica Funcional, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Nicolas Nin
- Unidad de Cuidados Intensivos, Hospital Español “Juan José Crottoggini”, Administración de Servicios de Salud del Estado, Montevideo, Uruguay
| | - Gonzalo Moratorio
- Laboratorio de Virología Molecular, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur Montevideo, Montevideo, Uruguay
| | - Pilar Moreno
- Laboratorio de Virología Molecular, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur Montevideo, Montevideo, Uruguay
| |
Collapse
|
2
|
Rodriguez F, Nin N, Fajardo A, Aunchayna M, Guerendiaín R, Hurtado J. [Early lung autopsy in deceased patients with acute respiratory distress syndrome due to infection by SARS-CoV-2]. Med Intensiva 2023; 47:173-175. [PMID: 35935246 PMCID: PMC9339975 DOI: 10.1016/j.medin.2022.07.001] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 07/12/2022] [Indexed: 11/23/2022]
Affiliation(s)
- F. Rodriguez
- Unidad de Medicina Intensiva, Hospital Español «Juan J. Crottogini» ASSE, Montevideo, Uruguay,Autor para correspondencia
| | - N. Nin
- Unidad de Medicina Intensiva, Hospital Español «Juan J. Crottogini» ASSE, Montevideo, Uruguay
| | - A. Fajardo
- Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - M. Aunchayna
- Laboratorio de Anatomía Patológica, Hospital Maciel ASSE, Montevideo, Uruguay
| | - R. Guerendiaín
- Unidad de Medicina Intensiva, Hospital Español «Juan J. Crottogini» ASSE, Montevideo, Uruguay
| | - J. Hurtado
- Unidad de Medicina Intensiva, Hospital Español «Juan J. Crottogini» ASSE, Montevideo, Uruguay
| |
Collapse
|
3
|
Rodriguez F, Nin N, Fajardo A, Auchayna M, Guerendiaín R, Hurtado J. Early lung autopsy in deceased patients with acute respiratory distress syndrome due to infection by SARS-CoV-2. Med Intensiva 2023; 47:173-175. [PMID: 36272904 PMCID: PMC9579894 DOI: 10.1016/j.medine.2022.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- F Rodriguez
- Unidad de Medicina Intensiva, Hospital Español "Juan J Crottogini" ASSE, Montevideo, Uruguay.
| | - N Nin
- Unidad de Medicina Intensiva, Hospital Español "Juan J Crottogini" ASSE, Montevideo, Uruguay
| | - A Fajardo
- Laboratorio de Virología Molecular, Facultad de Ciencias. Universidad de la República, Montevideo, Uruguay
| | - M Auchayna
- Laboratorio de Anatomía Patológica, Hospital Maciel ASSE, Montevideo, Uruguay
| | - R Guerendiaín
- Unidad de Medicina Intensiva, Hospital Español "Juan J Crottogini" ASSE, Montevideo, Uruguay
| | - J Hurtado
- Unidad de Medicina Intensiva, Hospital Español "Juan J Crottogini" ASSE, Montevideo, Uruguay
| |
Collapse
|
4
|
Pereira-Gómez M, Arce R, Ferla D, Simón D, Salazar C, Perbolianachis P, Costábile A, Fajardo A, Aldunate F, Nin N, Hurtado J, Iraola G, Moreno P, Moratorio G. One-year monitoring SARS-CoV-2 RNA surface contamination in hospitals reveals no correlation with organic material and negative pressure as a limiting factor for contamination. Heliyon 2023; 9:e13875. [PMID: 36845037 PMCID: PMC9938536 DOI: 10.1016/j.heliyon.2023.e13875] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 02/14/2023] [Accepted: 02/14/2023] [Indexed: 02/22/2023] Open
Abstract
Understanding transmission routes of SARS-CoV-2 is crucial to establish effective interventions in healthcare institutions. Although the role of surface contamination in SARS-CoV-2 transmission has been controversial, fomites have been proposed as a contributing factor. Longitudinal studies about SARS-CoV-2 surface contamination in hospitals with different infrastructure (presence or absence of negative pressure systems) are needed to improve our understanding of their effectiveness on patient healthcare and to advance our knowledge about the viral spread. We performed a one-year longitudinal study to evaluate surface contamination with SARS-CoV-2 RNA in reference hospitals. These hospitals have to admit all COVID-19 patients from public health services that require hospitalization. Surfaces samples were molecular tested for SARS-CoV-2 RNA presence considering three factors: the dirtiness by measuring organic material, the circulation of a high transmissibility variant, and the presence or absence of negative pressure systems in hospitalized patients' rooms. Our results show that: (i) There is no correlation between the amount of organic material dirtiness and SARS-CoV-2 RNA detected on surfaces; (ii) SARS-CoV-2 high transmissible Gamma variant introduction significantly increased surface contamination; (iii) the hospital with negative pressure systems was associated with lower levels of SARS-CoV-2 surface contamination and, iv) most environmental samples recovered from contaminated surfaces were assigned as non-infectious. This study provides data gathered for one year about the surface contamination with SARS-CoV-2 RNA sampling hospital settings. Our results suggest that spatial dynamics of SARS-CoV-2 RNA contamination varies according with the type of SARS-CoV-2 genetic variant and the presence of negative pressure systems. In addition, we showed that there is no correlation between the amount of organic material dirtiness and the quantity of viral RNA detected in hospital settings. Our findings suggest that SARS CoV-2 RNA surface contamination monitoring might be useful for the understanding of SARS-CoV-2 dissemination with impact on hospital management and public health policies. This is of special relevance for the Latin-American region where ICU rooms with negative pressure are insufficient.
Collapse
Affiliation(s)
- Marianoel Pereira-Gómez
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Uruguay,Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Rodrigo Arce
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Uruguay,Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Diego Ferla
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Uruguay,Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Diego Simón
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Uruguay,Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Cecilia Salazar
- Laboratorio de Genómica Microbiana, Institut Pasteur de Montevideo, Uruguay,Centro de Innovación en Vigilancia Epidemiológica, Institut Pasteur de Montevideo, Uruguay
| | - Paula Perbolianachis
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Uruguay,Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Alicia Costábile
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Uruguay,Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Uruguay,Centro de Innovación en Vigilancia Epidemiológica, Institut Pasteur de Montevideo, Uruguay,Sección Bioquímica, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Alvaro Fajardo
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Uruguay,Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Fabián Aldunate
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Uruguay,Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Nicolás Nin
- Unidad de Cuidados Intensivos, Hospital Español “Juan José Crottoggini”, Administración de Servicios de Salud del Estado, Uruguay
| | - Javier Hurtado
- Unidad de Cuidados Intensivos, Hospital Español “Juan José Crottoggini”, Administración de Servicios de Salud del Estado, Uruguay
| | - Gregorio Iraola
- Laboratorio de Genómica Microbiana, Institut Pasteur de Montevideo, Uruguay,Centro de Innovación en Vigilancia Epidemiológica, Institut Pasteur de Montevideo, Uruguay
| | - Pilar Moreno
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Uruguay,Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Uruguay,Centro de Innovación en Vigilancia Epidemiológica, Institut Pasteur de Montevideo, Uruguay,Corresponding author.Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Uruguay
| | - Gonzalo Moratorio
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Uruguay,Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Uruguay,Centro de Innovación en Vigilancia Epidemiológica, Institut Pasteur de Montevideo, Uruguay,Corresponding author.Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Uruguay
| |
Collapse
|
5
|
Angulo M, Vacca A, Rodríguez R, Marin MN, Suárez AL, Jorge G, Nosiglia O, Cambón V, Ríos A, Iglesias M, Seija M, Escande C, Hurtado J, Briva A. Peripheral and respiratory muscle impairment during murine acute lung injury. Physiol Rep 2022; 10:e15449. [PMID: 36065875 PMCID: PMC9446397 DOI: 10.14814/phy2.15449] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 08/13/2022] [Indexed: 11/24/2022] Open
Abstract
Acute respiratory distress syndrome is associated with skeletal muscle compromise, which decreases survival and impairs functional capacity. A comparative analysis of peripheral and respiratory muscles' atrophy and dysfunction in acute lung injury (ALI) has not been performed. We aimed to evaluate diaphragmatic and peripheral muscle mass and contractility in an ALI animal model. ALI was induced in C57BL/6 mice by intratracheal lipopolysaccharides instillation. Muscle mass and in vitro contractility were evaluated at different time points in hindlimb soleus (slow-twitch) and extensor digitorum longus (EDL, fast-twitch), as well as in the main respiratory muscle diaphragm. Myogenic precursor satellite cell-specific transcription factor Pax7 expression was determined by Western blot. Lung injury was associated with atrophy of the three studied muscles, although it was more pronounced and persistent in the diaphragm. Specific contractility was reduced during lung injury in EDL muscle but restored by the time lung injury has resolved. Specific force was not affected in soleus and diaphragm. A persistent increase in Pax7 expression was detected in diaphragm and EDL muscles after induction of ALI, but not in soleus muscle. Different peripheral and respiratory skeletal muscles are distinctly affected during the course of ALI. Each of the studied muscles presented a unique pattern in terms of atrophy development, contractile dysfunction and Pax7 expression.
Collapse
Affiliation(s)
- Martín Angulo
- Departamento de Fisiopatología, Hospital de Clínicas, Facultad de MedicinaUniversidad de la RepúblicaMontevideoUruguay
- Laboratorio de Exploración Funcional Respiratoria, Centro de Tratamiento Intensivo, Hospital de Clínicas, Facultad de MedicinaUniversidad de la RepúblicaMontevideoUruguay
| | - Agustina Vacca
- Departamento de Fisiopatología, Hospital de Clínicas, Facultad de MedicinaUniversidad de la RepúblicaMontevideoUruguay
| | - Romina Rodríguez
- Departamento de Fisiopatología, Hospital de Clínicas, Facultad de MedicinaUniversidad de la RepúblicaMontevideoUruguay
| | - María Noel Marin
- Departamento de Fisiopatología, Hospital de Clínicas, Facultad de MedicinaUniversidad de la RepúblicaMontevideoUruguay
| | - Ana Laura Suárez
- Departamento de Fisiopatología, Hospital de Clínicas, Facultad de MedicinaUniversidad de la RepúblicaMontevideoUruguay
| | - Gissel Jorge
- Departamento de Fisiopatología, Hospital de Clínicas, Facultad de MedicinaUniversidad de la RepúblicaMontevideoUruguay
| | - Oscar Nosiglia
- Departamento de Fisiopatología, Hospital de Clínicas, Facultad de MedicinaUniversidad de la RepúblicaMontevideoUruguay
| | - Victoria Cambón
- Departamento de Fisiopatología, Hospital de Clínicas, Facultad de MedicinaUniversidad de la RepúblicaMontevideoUruguay
| | - Anaclara Ríos
- Departamento de Fisiopatología, Hospital de Clínicas, Facultad de MedicinaUniversidad de la RepúblicaMontevideoUruguay
| | - Matías Iglesias
- Departamento de Fisiopatología, Hospital de Clínicas, Facultad de MedicinaUniversidad de la RepúblicaMontevideoUruguay
| | - Mariana Seija
- Departamento de Fisiopatología, Hospital de Clínicas, Facultad de MedicinaUniversidad de la RepúblicaMontevideoUruguay
| | - Carlos Escande
- Laboratorio de Patologías del Metabolismo y EnvejecimientoInstitut PasteurMontevideoUruguay
| | - Javier Hurtado
- Unidad de Medicina IntensivaHospital EspañolMontevideoUruguay
| | - Arturo Briva
- Cátedra de Medicina Intensiva, Hospital de Clínicas, Facultad de MedicinaUniversidad de la RepúblicaMontevideoUruguay
| |
Collapse
|
6
|
Pisani L, Algera AG, Neto AS, Azevedo L, Pham T, Paulus F, de Abreu MG, Pelosi P, Dondorp AM, Bellani G, Laffey JG, Schultz MJ, Martinez A, Leal L, Jorge Pereira A, de Oliveira Maia M, Neto JA, Piras C, Caser EB, Moreira CL, Braga Gusman P, Dalcomune DM, Ribeiro de Carvalho AG, Gondim LAR, Castelo Branco Reis LM, da Cunha Ribeiro D, de Assis Simões L, Campos RS, Fernandez Versiani dos Anjos JC, Bruzzi Carvalho F, Alves RA, Nunes LB, Réa-Neto Á, de Oliveira MC, Tannous L, Cardoso Gomes B, Rodriguez FB, Abelha P, Lugarinho ME, Japiassu A, de Melo HK, Lopes EA, Varaschin P, de Souza Dantas VC, Freitas Knibel M, Ponte M, de Azambuja Rodrigues PM, Costa Filho RC, Saddy F, Wanderley Castellões TF, Silva SA, Osorio LAG, Mannarino D, Espinoza R, Righy C, Soares M, Salluh J, Tanaka L, Aragão D, Tavares ME, Kehdi MGP, Rezende VMC, Carbonell RCC, Teixeira C, de Oliveira RP, Maccari JG, Castro PS, Berto P, Schwarz P, Torelly AP, Lisboa T, Moraes E, Dal-Pizzol F, Tomasi Damiani C, Ritter C, Ferreira JC, Teixeira Costa R, Caruso P, Amendola CP, de Oliveira AMRR, Silva UVA, Sanches LC, Almeida RDS, Azevedo LC, Park M, Schettino G, Assunção MS, Silva E, Barboza CE, Junior APN, Marzocchi Tierno PFGM, Malbouisson LM, Oliveira L, Cristovao D, Neto ML, Rego Ê, Fernandes FE, Romano MLP, Cavalcanti AB, de Souza Barros D, Rodgers H, Dixon B, Smith R, Kol M, Wong H, Schmid W, Hermans G, Ceunen H, Bourgeois M, Anquez N, Suzumura ÉA, Decruyenaere J, DeCrop L, Neto AS, Souza dos Santos R, Beraldo D, dos Santos MC, Pellegrini JAS, Piras C, Oliveira V, Munhoz C, Meira KL, Peçanha AC, da Silva Ramos FJ, Maia I, Bahl M, Biondi R, Prado D, Pinto SF, Salgado J, Falcão LF, Macruz T, de Oliveira GA, Cavalcanti AB, Romano MLP, Ruas K, Mecatti GC, Caser EB, Gava IA, Carreño N, Morales M, Avendaño R, Aguirre S, Luciano PM, Sribar A, Klaric V, Skilijic S, Dvorscak MB, Krkusek M, Jurjevic M, Karanovic N, Simurina T, Stourac P, Kratochvil M, Pacheco ED, Máca J, Wrigge H, Schlegel C, Treschan TA, Schaefer M, Aytulun A, Kienbaum P, Clarkson K, Jaafar R, Collins D, Mazza BF, Plant R, Melchionda G, Di Lauro E, Cortegiani A, Russotto V, Caione R, Mestria D, Volta CA, Spadaro S, Botteri M, Machado FR, Seghelini E, Brazzi L, Sales G, D'Antini D, Molin A, Severgnini P, Bacuzzi A, Peluso L, Verrastro P, Raimondo P, Ferreira E, Gecaj-Gashi A, Simonis FD, Tuinman PR, Alberts E, van den Hul I, Kuiper M, de Wilde RBP, Koopmans M, Kose I, Zincircioglu Ç, dos Santos RB, Dogan N, Aydin D, Denker AS, Buyukkocak U, Akgun N, Turan G, Senturk E, Demirtürk Z, Özcan PE, Ekinci O, Colombo AS, Saylan S, Eren G, Ulger F, Dilek A, Ulusoy H, Goktas U, Soyoral L, Toman H, Orak Y, Kahveci F, Nogueira AC, Mills GH, Pinder A, Walker R, Harrison J, Snell J, Seasman C, Pearson R, Sharman M, Kaloo C, Bynorth N, Fernandes JB, Matthews K, Hughes C, Rose A, Simeson K, Niska L, Huneke N, Adderly J, Padilla-Harris C, Oliver R, Brohi F, Nóbrega RS, Wilson N, Talbot H, Wilson D, Smith D, Dark P, Evans T, Fisher N, Montgomery J, Fitzell P, Muench C, do CS Martins B, Hugill K, Cirstea E, Bentley A, Lynch K, White I, Cooper J, Brazier M, Devile M, Parris M, Gill P, Soriano F, Patel T, Criswell J, Trodd D, Griffin D, Martin J, Wreybrown C, Bewley J, Sweet K, Grimmer L, Kozlowski M, Morsch RD, James S, Limb J, Cowton A, Rogerson D, Downes C, Melbourne S, Humphries R, Pulletz M, Moreton S, Janes S, Nunes ALB, Corner A, Linnett V, Ritzema J, Watters M, Windebank S, Chenna S, Howard-Griffin R, Turner K, Suresh S, Blaylock H, de Almeida JP, Bell S, Blenk K, Everett L, Hopkins P, Mellis C, Hadfield D, Harris C, Chan A, Birch S, Pegg C, Hajjar L, Plowright C, Cooper L, Hatton T, McCullagh I, Wright S, Scott C, Boyd C, Holliday M, Poultney U, Crowther H, Moulin S, Thornthwaite S, Hollister N, Hunt J, Skinner A, Matsa R, Salt R, Matthews C, Reschreiter H, Camsooksai J, Venner N, Giannini FP, Barcraft-Barnes H, Tbaily L, Pogson D, Mouland J, Rose S, Lamb N, Tarmey N, Knighton J, Giles J, Weller D, Baptiston Nunes AL, Reed I, Hormis A, Pearson S, Harris M, Howe J, Paddle J, Burt K, Welters I, Walker A, Youds L, Rios F, Hendry S, Shaw D, Williams K, Hollands R, Carnahan M, Stickley J, Miller C, Donaldson D, Tonks L, Creagh-Brown B, Van Haren F, Hull D, Boyd O, Ortiz-Ruiz L, Gopal S, Metherell S, Spencer H, Frey C, Brown C, Clifford G, Leaver S, Sottiaux T, Ryan C, Mellinghoff JM, Prudden SP, Green HG, Roy AR, Furneval JF, Bell AB, Lakhani SL, Fasting LF, Murray LM, Lora FS, Preller K, McInerney A, Beavis S, Whileman A, Toms J, Glenn S, Ramali M, Ghosh A, Bullock C, Barrell L, Azevedo LC, Young E, Robertson H, Faulkner M, MacNaughton P, Tyson S, Pulak P, Sewell TA, Smalley C, Jacob R, Santos C, Depuydt P, Alzugaray P, Vidal Melo MF, Joyce K, Needleman J, Ahsan A, Faiz A, Alam AKMS, Khatoon SN, Nath RK, Rahman Chowdhury MA, Fan E, Banik D, Mondol MK, Bhuiyan SR, Nazneed S, Sultana R, Hamid T, Hossain M, Reza ST, Asaduzzaman M, Salim M, Bugedo G, Mostafa Kamal AH, Taher SM, Taohid TM, Karmaker P, Roy S, Das S, Sarkar SA, Dutta ML, Roy P, Iyer S, Qiu H, Krishna B, Sampath S, Pattnaik R, Kasi CK, Shah J, Dongre A, Reza Hashemian SM, Nooraei N, Raessi Estabragh R, Malekmohammad M, Gonzalez M, Khoundabi B, Mobasher M, Mohd Yunos N, Kassim M, Voon CM, Das SS, Azauddin SNS, Dorasamy D, Tai LL, Mat Nor MB, Silesky J, Zarudin N, Hasan MS, Jamaluddin MFH, Othman Jailani MI, Kayashta G, Adhikari A, Pangeni R, Hashmi M, Joseph S, Akhtar A, Cerny V, Qadeer A, Memon I, Ali SM, Idrees F, Kamal S, Hanif S, Rehman AU, Taqi A, Hussain T, Farooq A, Nielsen J, Khaskheli S, Hayat M, Indraratna K, Beane A, Haniffa R, Samaranayake U, Mathanalagan S, Gunaratne A, Mithraratne N, Thilakasiri K, Jibaja M, Pilimatalawwe C, Dilhani YAH, Fernando M, Ranatunge K, Samarasinghe L, Vaas M, Edirisooriya M, Sigera C, Arumoli J, De Silva K, Pham T, Kudavidanage B, Pinto V, Dissanayake L, Chittawatanarat K, Kongpolprom N, Silachamroon U, Pornsuriyasak P, Petnak T, Singhatas P, Tangsujaritvijit V, Wrigge H, Rungruanghiranya S, Piriyapatsom A, Juntaping K, Trongtrakul K, Thungtitigul P, Tajarernmuang P, Chatmongkolchart S, Bhurayanontachai R, Akaraborworn O, Navasakulpong A, Matamis D, Surasit K, Thwaites L, Nadjm B, Vu Quoc D, Nguyen Thi Thanh H, Nguyen Van K, Duong Bich T, Lam Minh Y, Ranero JL, Hashemian SM, Amin P, Clarkson K, Bellani G, Kurahashi K, Villagomez A, Zeggwagh AA, Heunks LM, Laake JH, Palo JE, do Vale Fernandes A, Sandesc D, Arabi Y, Bumbasierevic V, Lorente JA, Larsson A, Piquilloud L, Abroug F, McAuley DF, McNamee L, Hurtado J, Bajwa E, Démpaire G, Francois GM, Sula H, Nunci L, Cani A, Zazu A, Dellera C, Insaurralde CS, Alejandro RV, Daldin J, Vinzio M, Fernandez RO, Cardonnet LP, Bettini LR, Bisso MC, Osman EM, Setten MG, Lovazzano P, Alvarez J, Villar V, Milstein C, Pozo NC, Grubissich N, Plotnikow GA, Vasquez DN, Ilutovich S, Tiribelli N, Chena A, Pellegrini CA, Saenz MG, Estenssoro E, Brizuela M, Gianinetto H, Gomez PE, Cerrato VI, Bezzi MG, Borello SA, Loiacono FA, Fernandez AM, Knowles S, Reynolds C, Inskip DM, Miller JJ, Kong J, Whitehead C, Bihari S, Seven A, Krstevski A, Rodgers HJ, Millar RT, Mckenna TE, Bailey IM, Hanlon GC, Aneman A, Lynch JM, Azad R, Neal J, Woods PW, Roberts BL, Kol MR, Wong HS, Riss KC, Staudinger T, Wittebole X, Berghe C, Bulpa PA, Dive AM, Verstraete R, Lebbinck H, Depuydt P, Vermassen J, Meersseman P, Ceunen H, Rosa JI, Beraldo DO, Piras C, Ampinelli AMR, Nassar Jr AP, Mataloun S, Moock M, Thompson MM, Gonçalves CH, Antônio ACP, Ascoli A, Biondi RS, Fontenele DC, Nobrega D, Sales VM, Shindhe S, Ismail DMABPH, Laffey J, Beloncle F, Davies KG, Cirone R, Manoharan V, Ismail M, Goligher EC, Jassal M, Nishikawa E, Javeed A, Curley G, Rittayamai N, Parotto M, Ferguson ND, Mehta S, Knoll J, Pronovost A, Canestrini S, Bruhn AR, Garcia PH, Aliaga FA, Farías PA, Yumha JS, Ortiz CA, Salas JE, Saez AA, Vega LD, Labarca EF, Martinez FT, Carreño NG, Lora P, Liu H, Qiu H, Liu L, Tang R, Luo X, An Y, Zhao H, Gao Y, Zhai Z, Ye ZL, Wang W, Li W, Li Q, Zheng R, Yu W, Shen J, Li X, Yu T, Lu W, Wu YQ, Huang XB, He Z, Lu Y, Han H, Zhang F, Sun R, Wang HX, Qin SH, Zhu BH, Zhao J, Liu J, Li B, Liu JL, Zhou FC, Li QJ, Zhang XY, Li-Xin Z, Xin-Hua Q, Jiang L, Gao YN, Zhao XY, Li YY, Li XL, Wang C, Yao Q, Yu R, Chen K, Shao H, Qin B, Huang QQ, Zhu WH, Hang AY, Hua MX, Li Y, Xu Y, Di YD, Ling LL, Qin TH, Wang SH, Qin J, Han Y, Zhou S, Vargas MP, Silesky Jimenez JI, González Rojas MA, Solis-Quesada JE, Ramirez-Alfaro CM, Máca J, Sklienka P, Gjedsted J, Christiansen A, Nielsen J, Villamagua BG, Llano M, Burtin P, Buzancais G, Beuret P, Pelletier N, Mortaza S, Mercat A, Chelly J, Jochmans S, Terzi N, Daubin C, Carteaux G, de Prost N, Chiche JD, Daviaud F, Pham T, Fartoukh M, Barberet G, Biehler J, Dellamonica J, Doyen D, Arnal JM, Briquet A, Hraiech S, Papazian L, Follin A, Roux D, Messika J, Kalaitzis E, Dangers L, Combes A, Au SM, Béduneau G, Carpentier D, Zogheib EH, Dupont H, Ricome S, Santoli FL, Besset SL, Michel P, Gelée B, Danin PE, Goubaux B, Crova PJ, Phan NT, Berkelmans F, Badie JC, Tapponnier R, Gally J, Khebbeb S, Herbrecht JE, Schneider F, Declercq PLM, Rigaud JP, Duranteau J, Harrois A, Chabanne R, Marin J, Bigot C, Thibault S, Ghazi M, Boukhazna M, Ould Zein S, Richecoeur JR, Combaux DM, Grelon F, Le Moal C, Sauvadet EP, Robine A, Lemiale V, Reuter D, Dres M, Demoule A, Goldgran-Toledano D, Baboi L, Guérin C, Lohner R, Kraßler J, Schäfer S, Zacharowski KD, Meybohm P, Reske AW, Simon P, Hopf HBF, Schuetz M, Baltus T, Papanikolaou MN, Papavasilopoulou TG, Zacharas GA, Ourailogloy V, Mouloudi EK, Massa EV, Nagy EO, Stamou EE, Kiourtzieva EV, Oikonomou MA, Avila LE, Cortez CA, Citalán JE, Jog SA, Sable SD, Shah B, Gurjar M, Baronia AK, Memon M, Muthuchellappan R, Ramesh VJ, Shenoy A, Unnikrishnan R, Dixit SB, Rhayakar RV, Ramakrishnan N, Bhardwaj VK, Mahto HL, Sagar SV, Palaniswamy V, Ganesan D, Mohammadreza Hashemian S, Jamaati H, Heidari F, Meaney EA, Nichol A, Knapman KM, O'Croinin D, Dunne ES, Breen DM, Clarkson KP, Jaafar RF, Dwyer R, Amir F, Ajetunmobi OO, O'Muircheartaigh AC, Black CS, Treanor N, Collins DV, Altaf W, Zani G, Fusari M, Spadaro S, Volta CA, Graziani R, Brunettini B, Palmese S, Formenti P, Umbrello M, Lombardo A, Pecci E, Botteri M, Savioli M, Protti A, Mattei A, Schiavoni L, Tinnirello A, Todeschini M, Giarratano A, Cortegiani A, Sher S, Rossi A, Antonelli MM, Montini LM, Casalena P, Scafetti S, Panarello G, Occhipinti G, Patroniti N, Pozzi M, Biscione RR, Poli MM, Raimondi F, Albiero D, Crapelli G, Beck E, Pota V, Schiavone V, Molin A, Tarantino F, Monti G, Frati E, Mirabella L, Cinnella G, Fossali T, Colombo R, Terragni P, Pattarino I, Mojoli F, Braschi A, Borotto EE, Cracchiolo AN, Palma DM, Raponi F, Foti G, Vascotto ER, Coppadoro A, Brazzi L, Floris L, Iotti GA, Venti A, Yamaguchi O, Takagi S, Maeyama HN, Watanabe E, Yamaji Y, Shimizu K, Shiozaki K, Futami S, Ryosuke S, Saito K, Kameyama Y, Ueno K, Izawa M, Okuda N, Suzuki H, Harasawa T, Nasu M, Takada T, Ito F, Nunomiya S, Koyama K, Abe T, Andoh K, Kusumoto K, Hirata A, Takaba A, Kimura H, Matsumoto S, Higashijima U, Honda H, Aoki N, Imai H, Ogino Y, Mizuguchi I, Ichikado K, Nitta K, Mochizuki K, Hashida T, Tanaka H, Nakamura T, Niimi D, Ueda T, Kashiwa Y, Uchiyama A, Sabelnikovs O, Oss P, Haddad Y, Liew KY, Ñamendys-Silva SA, Jarquin-Badiola YD, Sanchez-Hurtado LA, Gomez-Flores SS, Marin MC, Villagomez AJ, Lemus JS, Fierro JM, Cervantes MR, Mejia FJF, Gonzalez DR, Dector DM, Estrella CR, Sanchez-Medina JR, Ramirez-Gutierrez A, George FG, Aguirre JS, Buensuseso JA, Poblano M, Dendane T, Zeggwagh AA, Balkhi H, Elkhayari M, Samkaoui N, Ezzouine H, Benslama A, Amor M, Maazouzi W, Cimic N, Beck O, Bruns MM, Schouten JA, Rinia M, Raaijmakers M, Heunks LM, Van Wezel HM, Heines SJ, Buise MP, Simonis FD, Schultz MJ, Goodson JC, rowne TSB, Navarra L, Hunt A, Hutchison RA, Bailey MB, Newby L, Mcarthur C, Kalkoff M, Mcleod A, Casement J, Hacking DJ, Andersen FH, Dolva MS, Laake JH, Barratt-Due A, Noremark KAL, Søreide E, Sjøbø BÅ, Guttormsen AB, Yoshido HHL, Aguilar RZ, Oscanoa FAM, Alisasis AU, Robles JB, Pasanting-Lim RAB, Tan BC, Andruszkiewicz P, Jakubowska K, Cox CM, Alvarez AM, Oliveira BS, Montanha GM, Barros NC, Pereira CS, Messias AM, Monteiro JM, Araujo AM, Catorze NT, Marum SM, Bouw MJ, Gomes RM, Brito VA, Castro S, Estilita JM, Barros FM, Serra IM, Martinho AM, Tomescu DR, Marcu A, Bedreag OH, Papurica M, Corneci DE, Negoita SI, Grigoriev E, Gritsan AI, Gazenkampf AA, Almekhlafi G, Albarrak MM, Mustafa GM, Maghrabi KA, Salahuddin N, Aisa TM, Al Jabbary AS, Tabhan E, Arabi YM, Trinidad OA, Al Dorzi HM, Tabhan EE, Bolon S, Smith O, Mancebo J, Aguirre-Bermeo H, Lopez-Delgado JC, Esteve F, Rialp G, Forteza C, De Haro C, Artigas A, Albaiceta GM, De Cima-Iglesias S, Seoane-Quiroga L, Ceniceros-Barros A, Ruiz-Aguilar AL, Claraco-Vega LM, Soler JA, Lorente MDC, Hermosa C, Gordo F, Prieto-González M, López-Messa JB, Perez MP, Pere CP, Allue RM, Roche-Campo F, Ibañez-Santacruz M, Temprano S, Pintado MC, De Pablo R, Gómez PRA, Ruiz SR, Moles SI, Jurado MT, Arizmendi A, Piacentini EA, Franco N, Honrubia T, Perez Cheng M, Perez Losada E, Blanco J, Yuste LJ, Carbayo-Gorriz C, Cazorla-Barranquero FG, Alonso JG, Alda RS, Algaba Á, Navarro G, Cereijo E, Diaz-Rodriguez E, Marcos DP, Montero LA, Para LH, Sanchez RJ, Blasco Navalpotro MA, Abad RD, Montiel González R, Toribio DP, Castro AG, Artiga MJD, Penuelas O, Roser TP, Olga MF, Curto EG, Sánchez RM, Imma VP, Elisabet GM, Claverias L, Magret M, Pellicer AM, Rodriguez LL, Sánchez-Ballesteros J, González-Salamanca Á, Jimenez AG, Huerta FP, Diaz JCJS, Lopez EB, Moya DDL, Alfonso AAT, Eugenio Luis PS, Cesar PS, Rafael SI, Virgilio CG, Recio NN, Adamsson RO, Rylander CC, Holzgraefe B, Broman LM, Wessbergh J, Persson L, Schiöler F, Kedelv H, Tibblin AO, Appelberg H, Hedlund L, Helleberg J, Eriksson KE, Glietsch R, Larsson N, Nygren I, Nunes SL, Morin AK, Kander T, Adolfsson A, Piquilloud L, Zender HO, Leemann-Refondini C, Elatrous S, Bouchoucha S, Chouchene I, Ouanes I, Ben Souissi A, Kamoun S, Demirkiran O, Aker M, Erbabacan E, Ceylan I, Girgin NK, Ozcelik M, Ünal N, Meco BC, Akyol OO, Derman SS, Kennedy B, Parhar K, Srinivasa L, McNamee L, McAuley D, Steinberg J, Hopkins P, Mellis C, Stansil F, Kakar V, Hadfield D, Brown C, Vercueil A, Bhowmick K, Humphreys SK, Ferguson A, Mckee R, Raj AS, Fawkes DA, Watt P, Twohey L, Thomas RRJM, Morton A, Kadaba V, Smith MJ, Hormis AP, Kannan SG, Namih M, Reschreiter H, Camsooksai J, Kumar A, Rugonfalvi S, Nutt C, Oneill O, Seasman C, Dempsey G, Scott CJ, Ellis HE, Mckechnie S, Hutton PJ, Di Tomasso NN, Vitale MN, Griffin RO, Dean MN, Cranshaw JH, Willett EL, Ioannou N, Gillis S, Csabi P, Macfadyen R, Dawson H, Preez PD, Williams AJ, Boyd O, De Gordoa LOR, Bramall J, Symmonds S, Chau SK, Wenham T, Szakmany T, Toth-Tarsoly P, Mccalman KH, Alexander P, Stephenson L, Collyer T, Chapman R, Cooper R, Allan RM, Sim M, Wrathall DW, Irvine DA, Zantua KS, Adams JC, Burtenshaw AJ, Sellors GP, Welters ID, Williams KE, Hessell RJ, Oldroyd MG, Battle CE, Pillai S, Kajtor I, Sivashanmugave M, Okane SC, Donnelly A, Frigyik AD, Careless JP, May MM, Stewart R, Trinder TJ, Hagan SJ, Wise MP, Cole JM, MacFie CC, Dowling AT, Hurtado J, Nin N, Hurtado J, Nuñez E, Pittini G, Rodriguez R, Imperio MC, Santos C, França AG, Ebeid A, Deicas A, Serra C, Uppalapati A, Kamel G, Banner-Goodspeed VM, Beitler JR, Mukkera SR, Kulkarni S, Lee J, Mesar T, Shinn Iii JO, Gomaa D, Tainter C, Mesar T, Cowley RA, Yeatts DJ, Warren J, Lanspa MJ, Miller RR, Grissom CK, Brown SM, Bauer PR, Gosselin RJ, Kitch BT, Cohen JE, Beegle SH, Gueret RM, Tulaimat A, Choudry S, Stigler W, Batra H, Huff NG, Lamb KD, Oetting TW, Mohr NM, Judy C, Saito S, Kheir FM, Schlichting AB, Delsing A, Elmasri M, Crouch DR, Ismail D, Blakeman TC, Dreyer KR, Gomaa D, Baron RM, Grijalba CQ, Hou PC, Seethala R, Aisiku I, Henderson G, Frendl G, Hou SK, Owens RL, Schomer A, Bumbasirevic V, Jovanovic B, Surbatovic M, Veljovic M, Van Haren F. Geoeconomic variations in epidemiology, ventilation management, and outcomes in invasively ventilated intensive care unit patients without acute respiratory distress syndrome: a pooled analysis of four observational studies. The Lancet Global Health 2022; 10:e227-e235. [PMID: 34914899 PMCID: PMC8766316 DOI: 10.1016/s2214-109x(21)00485-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 09/05/2021] [Accepted: 10/01/2021] [Indexed: 12/19/2022] Open
Abstract
Background Geoeconomic variations in epidemiology, the practice of ventilation, and outcome in invasively ventilated intensive care unit (ICU) patients without acute respiratory distress syndrome (ARDS) remain unexplored. In this analysis we aim to address these gaps using individual patient data of four large observational studies. Methods In this pooled analysis we harmonised individual patient data from the ERICC, LUNG SAFE, PRoVENT, and PRoVENT-iMiC prospective observational studies, which were conducted from June, 2011, to December, 2018, in 534 ICUs in 54 countries. We used the 2016 World Bank classification to define two geoeconomic regions: middle-income countries (MICs) and high-income countries (HICs). ARDS was defined according to the Berlin criteria. Descriptive statistics were used to compare patients in MICs versus HICs. The primary outcome was the use of low tidal volume ventilation (LTVV) for the first 3 days of mechanical ventilation. Secondary outcomes were key ventilation parameters (tidal volume size, positive end-expiratory pressure, fraction of inspired oxygen, peak pressure, plateau pressure, driving pressure, and respiratory rate), patient characteristics, the risk for and actual development of acute respiratory distress syndrome after the first day of ventilation, duration of ventilation, ICU length of stay, and ICU mortality. Findings Of the 7608 patients included in the original studies, this analysis included 3852 patients without ARDS, of whom 2345 were from MICs and 1507 were from HICs. Patients in MICs were younger, shorter and with a slightly lower body-mass index, more often had diabetes and active cancer, but less often chronic obstructive pulmonary disease and heart failure than patients from HICs. Sequential organ failure assessment scores were similar in MICs and HICs. Use of LTVV in MICs and HICs was comparable (42·4% vs 44·2%; absolute difference –1·69 [–9·58 to 6·11] p=0·67; data available in 3174 [82%] of 3852 patients). The median applied positive end expiratory pressure was lower in MICs than in HICs (5 [IQR 5–8] vs 6 [5–8] cm H2O; p=0·0011). ICU mortality was higher in MICs than in HICs (30·5% vs 19·9%; p=0·0004; adjusted effect 16·41% [95% CI 9·52–23·52]; p<0·0001) and was inversely associated with gross domestic product (adjusted odds ratio for a US$10 000 increase per capita 0·80 [95% CI 0·75–0·86]; p<0·0001). Interpretation Despite similar disease severity and ventilation management, ICU mortality in patients without ARDS is higher in MICs than in HICs, with a strong association with country-level economic status. Funding No funding.
Collapse
|
7
|
Tenzi J, Hurtado J, Nin N, Rodriguez F, Molina C, Aunchayna M. Renal histopathology in critically ill patients with Septic Acute Kidney Injury(S-AKI). J Crit Care 2021; 68:38-41. [PMID: 34872015 DOI: 10.1016/j.jcrc.2021.11.013] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 11/10/2021] [Accepted: 11/20/2021] [Indexed: 12/11/2022]
Abstract
PURPOSE To describe the kidney histopathology of patients with S-AKI and correlate the histological findings with AKI severity, presence of septic shock, and the degree of multiple organic dysfunction (MOD) using the SOFA score. MATERIALS AND METHODS This was a prospective, observational, and analytical study of a cohort of critically ill patients with S-AKI who died from sepsis at the "Hospital Español" intensive care unit (ICU). Kidney necropsies were performed within 2 h after death. RESULTS We considered twenty (20) patients, with all of them exhibiting S-AKI stage 3 at the same time. In renal histopathology analysis, nonspecific tubulointerstitial (TI) lesions were found in almost all patients (95%). The more frequently found nonspecific TI lesions involved leukocyte infiltration (85%). Necrotic TI lesions were found in 6 patients (30%), and necrotic tubular cell casts were the most frequent lesions (50% of patients). It was not possible to demonstrate an association between the presence of necrotic TI lesions and factors such as the APACHE II score, the global SOFA score, ICU stays, AKI length and renal replacement therapy (RRT). CONCLUSIONS The main histopathological findings in kidney necropsies in patients with S-AKI KDIGO 3, showed nonspecific TI lesions, and TI necrosis was only observed in 30% of the cases; therefore, S-AKI cannot be considered to be synonymous with acute tubular necrosis (ATN).
Collapse
Affiliation(s)
- Jordán Tenzi
- Unidad de Medicina Intensiva Hospital Español, ASSE, Montevideo, Uruguay.
| | - Javier Hurtado
- Unidad de Medicina Intensiva Hospital Español, ASSE, Montevideo, Uruguay
| | - Nicolás Nin
- Unidad de Medicina Intensiva Hospital Español, ASSE, Montevideo, Uruguay
| | - Fernando Rodriguez
- Unidad de Medicina Intensiva Hospital Español, ASSE, Montevideo, Uruguay
| | - Claudia Molina
- Unidad de Medicina Intensiva Hospital Español, ASSE, Montevideo, Uruguay
| | - Maria Aunchayna
- Laboratorio Anatomía Patológica Hospital Maciel, ASSE, Montevideo, Uruguay
| |
Collapse
|
8
|
Rego N, Salazar C, Paz M, Costábile A, Fajardo A, Ferrés I, Perbolianachis P, Fernández-Calero T, Noya V, Machado MR, Brandes M, Arce R, Arleo M, Possi T, Reyes N, Bentancor MN, Lizasoain A, Bortagaray V, Moller A, Chappos O, Nin N, Hurtado J, Duquía M, González MB, Griffero L, Méndez M, Techera MP, Zanetti J, Pereira E, Rivera B, Maidana M, Alonso M, Smircich P, Arantes I, Mir D, Alonso C, Medina J, Albornoz H, Colina R, Bello G, Moreno P, Moratorio G, Iraola G, Spangenberg L. Emergence and Spread of a B.1.1.28-Derived P.6 Lineage with Q675H and Q677H Spike Mutations in Uruguay. Viruses 2021; 13:1801. [PMID: 34578382 PMCID: PMC8473254 DOI: 10.3390/v13091801] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/20/2021] [Accepted: 08/31/2021] [Indexed: 12/11/2022] Open
Abstract
Uruguay controlled the viral dissemination during the first nine months of the SARS-CoV-2 pandemic. Unfortunately, towards the end of 2020, the number of daily new cases exponentially increased. Herein, we analyzed the country-wide genetic diversity of SARS-CoV-2 between November 2020 and April 2021. We identified that the most prevalent viral variant during the first epidemic wave in Uruguay (December 2020-February 2021) was a B.1.1.28 sublineage carrying Spike mutations Q675H + Q677H, now designated as P.6, followed by lineages P.2 and P.7. P.6 probably arose around November 2020, in Montevideo, Uruguay's capital department, and rapidly spread to other departments, with evidence of further local transmission clusters; it also spread sporadically to the USA and Spain. The more efficient dissemination of lineage P.6 with respect to P.2 and P.7 and the presence of mutations (Q675H and Q677H) in the proximity of the key cleavage site at the S1/S2 boundary suggest that P.6 may be more transmissible than other lineages co-circulating in Uruguay. Although P.6 was replaced by the variant of concern (VOC) P.1 as the predominant lineage in Uruguay since April 2021, the monitoring of the concurrent emergence of Q675H + Q677H in VOCs should be of worldwide interest.
Collapse
Affiliation(s)
- Natalia Rego
- Bioinformatics Unit, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay; (N.R.); (T.F.-C.); (M.B.)
| | - Cecilia Salazar
- Laboratorio de Genómica Microbiana, Institut Pasteur Montevideo, Montevideo 11400, Uruguay; (C.S.); (I.F.)
- Centro de Innovación en Vigilancia Epidemiológica, Institut Pasteur Montevideo, Montevideo 11400, Uruguay; (M.P.); (A.C.)
| | - Mercedes Paz
- Centro de Innovación en Vigilancia Epidemiológica, Institut Pasteur Montevideo, Montevideo 11400, Uruguay; (M.P.); (A.C.)
| | - Alicia Costábile
- Centro de Innovación en Vigilancia Epidemiológica, Institut Pasteur Montevideo, Montevideo 11400, Uruguay; (M.P.); (A.C.)
- Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay; (A.F.); (P.P.); (R.A.)
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
- Sección Bioquímica, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay
| | - Alvaro Fajardo
- Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay; (A.F.); (P.P.); (R.A.)
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
| | - Ignacio Ferrés
- Laboratorio de Genómica Microbiana, Institut Pasteur Montevideo, Montevideo 11400, Uruguay; (C.S.); (I.F.)
- Centro de Innovación en Vigilancia Epidemiológica, Institut Pasteur Montevideo, Montevideo 11400, Uruguay; (M.P.); (A.C.)
| | - Paula Perbolianachis
- Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay; (A.F.); (P.P.); (R.A.)
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
| | - Tamara Fernández-Calero
- Bioinformatics Unit, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay; (N.R.); (T.F.-C.); (M.B.)
- Department of Exact and Natural Sciences, Universidad Católica del Uruguay, Montevideo 11600, Uruguay
| | - Veronica Noya
- Laboratorio de Biología Molecular, Sanatorio Americano, Montevideo 11600, Uruguay; (V.N.); (M.A.); (T.P.); (N.R.); (M.N.B.)
| | - Matias R. Machado
- Protein Engineering, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay;
| | - Mariana Brandes
- Bioinformatics Unit, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay; (N.R.); (T.F.-C.); (M.B.)
| | - Rodrigo Arce
- Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay; (A.F.); (P.P.); (R.A.)
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
- Laboratorio de Biología Molecular, Sanatorio Americano, Montevideo 11600, Uruguay; (V.N.); (M.A.); (T.P.); (N.R.); (M.N.B.)
| | - Mailen Arleo
- Laboratorio de Biología Molecular, Sanatorio Americano, Montevideo 11600, Uruguay; (V.N.); (M.A.); (T.P.); (N.R.); (M.N.B.)
| | - Tania Possi
- Laboratorio de Biología Molecular, Sanatorio Americano, Montevideo 11600, Uruguay; (V.N.); (M.A.); (T.P.); (N.R.); (M.N.B.)
| | - Natalia Reyes
- Laboratorio de Biología Molecular, Sanatorio Americano, Montevideo 11600, Uruguay; (V.N.); (M.A.); (T.P.); (N.R.); (M.N.B.)
| | - María Noel Bentancor
- Laboratorio de Biología Molecular, Sanatorio Americano, Montevideo 11600, Uruguay; (V.N.); (M.A.); (T.P.); (N.R.); (M.N.B.)
| | - Andrés Lizasoain
- Laboratorio de Virología Molecular, Departamento de Ciencias Biológicas, CENUR Litoral Norte, Universidad de la República, Salto 50000, Uruguay; (A.L.); (V.B.); (A.M.); (R.C.)
| | - Viviana Bortagaray
- Laboratorio de Virología Molecular, Departamento de Ciencias Biológicas, CENUR Litoral Norte, Universidad de la República, Salto 50000, Uruguay; (A.L.); (V.B.); (A.M.); (R.C.)
| | - Ana Moller
- Laboratorio de Virología Molecular, Departamento de Ciencias Biológicas, CENUR Litoral Norte, Universidad de la República, Salto 50000, Uruguay; (A.L.); (V.B.); (A.M.); (R.C.)
| | - Odhille Chappos
- Centro Universitario Regional Este, Universidad de la República, Rocha 27000, Uruguay; (O.C.); (M.D.); (M.B.G.); (L.G.); (M.M.); (M.P.T.); (J.Z.); (E.P.); (C.A.)
| | - Nicolas Nin
- Unidad de Cuidados Intensivos, Hospital Español “Juan J. Crottogini”, Montevideo 11800, Uruguay; (N.N.); (J.H.)
| | - Javier Hurtado
- Unidad de Cuidados Intensivos, Hospital Español “Juan J. Crottogini”, Montevideo 11800, Uruguay; (N.N.); (J.H.)
| | - Melissa Duquía
- Centro Universitario Regional Este, Universidad de la República, Rocha 27000, Uruguay; (O.C.); (M.D.); (M.B.G.); (L.G.); (M.M.); (M.P.T.); (J.Z.); (E.P.); (C.A.)
| | - Maria Belén González
- Centro Universitario Regional Este, Universidad de la República, Rocha 27000, Uruguay; (O.C.); (M.D.); (M.B.G.); (L.G.); (M.M.); (M.P.T.); (J.Z.); (E.P.); (C.A.)
| | - Luciana Griffero
- Centro Universitario Regional Este, Universidad de la República, Rocha 27000, Uruguay; (O.C.); (M.D.); (M.B.G.); (L.G.); (M.M.); (M.P.T.); (J.Z.); (E.P.); (C.A.)
| | - Mauricio Méndez
- Centro Universitario Regional Este, Universidad de la República, Rocha 27000, Uruguay; (O.C.); (M.D.); (M.B.G.); (L.G.); (M.M.); (M.P.T.); (J.Z.); (E.P.); (C.A.)
| | - Maria Pía Techera
- Centro Universitario Regional Este, Universidad de la República, Rocha 27000, Uruguay; (O.C.); (M.D.); (M.B.G.); (L.G.); (M.M.); (M.P.T.); (J.Z.); (E.P.); (C.A.)
| | - Juan Zanetti
- Centro Universitario Regional Este, Universidad de la República, Rocha 27000, Uruguay; (O.C.); (M.D.); (M.B.G.); (L.G.); (M.M.); (M.P.T.); (J.Z.); (E.P.); (C.A.)
| | - Emiliano Pereira
- Centro Universitario Regional Este, Universidad de la República, Rocha 27000, Uruguay; (O.C.); (M.D.); (M.B.G.); (L.G.); (M.M.); (M.P.T.); (J.Z.); (E.P.); (C.A.)
| | - Bernardina Rivera
- Laboratorio de Diagnóstico Molecular, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay; (B.R.); (M.M.); (M.A.)
| | - Matías Maidana
- Laboratorio de Diagnóstico Molecular, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay; (B.R.); (M.M.); (M.A.)
| | - Martina Alonso
- Laboratorio de Diagnóstico Molecular, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay; (B.R.); (M.M.); (M.A.)
| | - Pablo Smircich
- Bioinformatics Laboratory, Department of Genomics, Instituto de Investigaciones Biológicas Clemente Estable, MEC, Montevideo 11600, Uruguay;
- Laboratory of Molecular Interactions, Facultad de Ciencias, UdelaR, Montevideo 11400, Uruguay
| | - Ighor Arantes
- Laboratorio de AIDS e Imunologia Molecular, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro 21040-900, Brazil; (I.A.); (G.B.)
| | - Daiana Mir
- Unidad de Genómica y Bioinformática, Departamento de Ciencias Biológicas, Centro Universitario Regional Litoral Norte, Universidad de la República, Salto 50000, Uruguay;
| | - Cecilia Alonso
- Centro Universitario Regional Este, Universidad de la República, Rocha 27000, Uruguay; (O.C.); (M.D.); (M.B.G.); (L.G.); (M.M.); (M.P.T.); (J.Z.); (E.P.); (C.A.)
| | - Julio Medina
- Cátedra de Enfermedades Infecciosas, Facultad de Medicina, Universidad de la República, Montevideo 11300, Uruguay; (J.M.); (H.A.)
- Dirección General de Salud, Ministerio de Salud Pública, Montevideo 11200, Uruguay
| | - Henry Albornoz
- Cátedra de Enfermedades Infecciosas, Facultad de Medicina, Universidad de la República, Montevideo 11300, Uruguay; (J.M.); (H.A.)
- Dirección General de Salud, Ministerio de Salud Pública, Montevideo 11200, Uruguay
| | - Rodney Colina
- Laboratorio de Virología Molecular, Departamento de Ciencias Biológicas, CENUR Litoral Norte, Universidad de la República, Salto 50000, Uruguay; (A.L.); (V.B.); (A.M.); (R.C.)
| | - Gonzalo Bello
- Laboratorio de AIDS e Imunologia Molecular, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro 21040-900, Brazil; (I.A.); (G.B.)
| | - Pilar Moreno
- Centro de Innovación en Vigilancia Epidemiológica, Institut Pasteur Montevideo, Montevideo 11400, Uruguay; (M.P.); (A.C.)
- Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay; (A.F.); (P.P.); (R.A.)
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
| | - Gonzalo Moratorio
- Centro de Innovación en Vigilancia Epidemiológica, Institut Pasteur Montevideo, Montevideo 11400, Uruguay; (M.P.); (A.C.)
- Laboratorio de Virología Molecular, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay; (A.F.); (P.P.); (R.A.)
- Laboratorio de Evolución Experimental de Virus, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
| | - Gregorio Iraola
- Laboratorio de Genómica Microbiana, Institut Pasteur Montevideo, Montevideo 11400, Uruguay; (C.S.); (I.F.)
- Centro de Innovación en Vigilancia Epidemiológica, Institut Pasteur Montevideo, Montevideo 11400, Uruguay; (M.P.); (A.C.)
- Center for Integrative Biology, Universidad Mayor, Santiago de Chile 8580745, Chile
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Hinxton, Cambridge CB10 1SA, UK
| | - Lucía Spangenberg
- Bioinformatics Unit, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay; (N.R.); (T.F.-C.); (M.B.)
- Department of Informatics and Computer Science, Universidad Católica del Uruguay, Montevideo 11600, Uruguay
| |
Collapse
|
9
|
Amarelle L, Quintela L, Hurtado J, Malacrida L. Hyperoxia and Lungs: What We Have Learned From Animal Models. Front Med (Lausanne) 2021; 8:606678. [PMID: 33768102 PMCID: PMC7985075 DOI: 10.3389/fmed.2021.606678] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [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: 09/15/2020] [Accepted: 02/15/2021] [Indexed: 12/19/2022] Open
Abstract
Although oxygen (O2) is essential for aerobic life, it can also be an important source of cellular damage. Supra-physiological levels of O2 determine toxicity due to exacerbated reactive oxygen species (ROS) production, impairing the homeostatic balance of several cellular processes. Furthermore, injured cells activate inflammation cascades, amplifying the tissue damage. The lung is the first (but not the only) organ affected by this condition. Critically ill patients are often exposed to several insults, such as mechanical ventilation, infections, hypo-perfusion, systemic inflammation, and drug toxicity. In this scenario, it is not easy to dissect the effect of oxygen toxicity. Translational investigations with animal models are essential to explore injuring stimuli in controlled experimental conditions, and are milestones in understanding pathological mechanisms and developing therapeutic strategies. Animal models can resemble what happens in critical care or anesthesia patients under mechanical ventilation and hyperoxia, but are also critical to explore the effect of O2 on lung development and the role of hyperoxic damage on bronchopulmonary dysplasia. Here, we set out to review the hyperoxia effects on lung pathology, contributing to the field by describing and analyzing animal experimentation's main aspects and its implications on human lung diseases.
Collapse
Affiliation(s)
- Luciano Amarelle
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Lucía Quintela
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Javier Hurtado
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Leonel Malacrida
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay.,Advanced Bioimaging Unit, Institut Pasteur Montevideo and Universidad de la República, Montevideo, Uruguay
| |
Collapse
|
10
|
Dubin A, Pozo MO, Hurtado J. Central venous minus arterial carbon dioxide pressure to arterial minus central venous oxygen content ratio as an indicator of tissue oxygenation: a narrative review. Rev Bras Ter Intensiva 2020; 32:115-122. [PMID: 32401981 PMCID: PMC7206946 DOI: 10.5935/0103-507x.20200017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 04/28/2019] [Accepted: 06/09/2019] [Indexed: 12/18/2022] Open
Abstract
The central venous minus arterial carbon dioxide pressure to arterial minus central venous oxygen content ratio (Pcv-aCO2/Ca-cvO2) has been proposed as a surrogate for respiratory quotient and an indicator of tissue oxygenation. Some small observational studies have found that a Pcv-aCO2/Ca-cvO2 > 1.4 was associated with hyperlactatemia, oxygen supply dependency, and increased mortality. Moreover, Pcv-aCO2/Ca-cvO2 has been incorporated into algorithms for tissue oxygenation evaluation and resuscitation. However, the evidence for these recommendations is quite limited and of low quality. The goal of this narrative review was to analyze the methodological bases, the pathophysiologic foundations, and the experimental and clinical evidence supporting the use of Pcv-aCO2/Ca-cvO2 as a surrogate for respiratory quotient. Physiologically, the increase in respiratory quotient secondary to critical reductions in oxygen transport is a life-threatening and dramatic event. Nevertheless, this event is easily noticeable and probably does not require further monitoring. Since the beginning of anaerobic metabolism is indicated by the sudden increase in respiratory quotient and the normal range of respiratory quotient is wide, the use of a defined cutoff of 1.4 for Pcv-aCO2/Ca-cvO2 is meaningless. Experimental studies have shown that Pcv-aCO2/Ca-cvO2 is more dependent on factors that modify the dissociation of carbon dioxide from hemoglobin than on respiratory quotient and that respiratory quotient and Pcv-aCO2/Ca-cvO2 may have distinct behaviors. Studies performed in critically ill patients have shown controversial results regarding the ability of Pcv-aCO2/Ca-cvO2 to predict outcome, hyperlactatemia, microvascular abnormalities, and oxygen supply dependency. A randomized controlled trial also showed that Pcv-aCO2/Ca-cvO2 is useless as a goal of resuscitation. Pcv-aCO2/Ca-cvO2 should be carefully interpreted in critically ill patients.
Collapse
Affiliation(s)
- Arnaldo Dubin
- Cátedra de Farmacología Aplicada, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina
| | | | | |
Collapse
|
11
|
Illescas L, Kohn E, Bouchacourt JP, Cavalleri F, Hurtado J, Riva J. Utilidad de las medidas derivadas de la presión parcial de CO2 en pacientes adultos
sometidos cirugía cardíaca con circulación extracorpórea. Rev chil anest 2019. [DOI: 10.25237/revchilanestv48n05.06] [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
|
12
|
Hernández G, Ospina-Tascón GA, Damiani LP, Estenssoro E, Dubin A, Hurtado J, Friedman G, Castro R, Alegría L, Teboul JL, Cecconi M, Ferri G, Jibaja M, Pairumani R, Fernández P, Barahona D, Granda-Luna V, Cavalcanti AB, Bakker J. Effect of a Resuscitation Strategy Targeting Peripheral Perfusion Status vs Serum Lactate Levels on 28-Day Mortality Among Patients With Septic Shock: The ANDROMEDA-SHOCK Randomized Clinical Trial. JAMA 2019; 321:654-664. [PMID: 30772908 PMCID: PMC6439620 DOI: 10.1001/jama.2019.0071] [Citation(s) in RCA: 386] [Impact Index Per Article: 77.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
IMPORTANCE Abnormal peripheral perfusion after septic shock resuscitation has been associated with organ dysfunction and mortality. The potential role of the clinical assessment of peripheral perfusion as a target during resuscitation in early septic shock has not been established. OBJECTIVE To determine if a peripheral perfusion-targeted resuscitation during early septic shock in adults is more effective than a lactate level-targeted resuscitation for reducing mortality. DESIGN, SETTING, AND PARTICIPANTS Multicenter, randomized trial conducted at 28 intensive care units in 5 countries. Four-hundred twenty-four patients with septic shock were included between March 2017 and March 2018. The last date of follow-up was June 12, 2018. INTERVENTIONS Patients were randomized to a step-by-step resuscitation protocol aimed at either normalizing capillary refill time (n = 212) or normalizing or decreasing lactate levels at rates greater than 20% per 2 hours (n = 212), during an 8-hour intervention period. MAIN OUTCOMES AND MEASURES The primary outcome was all-cause mortality at 28 days. Secondary outcomes were organ dysfunction at 72 hours after randomization, as assessed by Sequential Organ Failure Assessment (SOFA) score (range, 0 [best] to 24 [worst]); death within 90 days; mechanical ventilation-, renal replacement therapy-, and vasopressor-free days within 28 days; intensive care unit and hospital length of stay. RESULTS Among 424 patients randomized (mean age, 63 years; 226 [53%] women), 416 (98%) completed the trial. By day 28, 74 patients (34.9%) in the peripheral perfusion group and 92 patients (43.4%) in the lactate group had died (hazard ratio, 0.75 [95% CI, 0.55 to 1.02]; P = .06; risk difference, -8.5% [95% CI, -18.2% to 1.2%]). Peripheral perfusion-targeted resuscitation was associated with less organ dysfunction at 72 hours (mean SOFA score, 5.6 [SD, 4.3] vs 6.6 [SD, 4.7]; mean difference, -1.00 [95% CI, -1.97 to -0.02]; P = .045). There were no significant differences in the other 6 secondary outcomes. No protocol-related serious adverse reactions were confirmed. CONCLUSIONS AND RELEVANCE Among patients with septic shock, a resuscitation strategy targeting normalization of capillary refill time, compared with a strategy targeting serum lactate levels, did not reduce all-cause 28-day mortality. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT03078712.
Collapse
Affiliation(s)
- Glenn Hernández
- Departmento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago
| | - Gustavo A. Ospina-Tascón
- Fundación Valle del Lili, Universidad ICESI, Department of Intensive Care Medicine, Cali, Colombia
| | - Lucas Petri Damiani
- HCor Research Institute–Hospital do Coração, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Elisa Estenssoro
- Hospital Interzonal de Agudos San Martín de La Plata, La Plata, Argentina
| | - Arnaldo Dubin
- Sanatorio Otamendi, Buenos Aires, Argentina
- Cátedra de Farmacología Aplicada, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina
| | - Javier Hurtado
- Intensive Care Unit, Hospital Español–ASSE, Montevideo, Uruguay
- Department of Pathophysiology, School of Medicine Universidad de la República, Montevideo, Uruguay
| | - Gilberto Friedman
- Post-Graduation Program in Pneumological Sciences, Department of Internal Medicine, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Ricardo Castro
- Departmento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago
| | - Leyla Alegría
- Departmento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago
| | - Jean-Louis Teboul
- Service de Réanimation Médicale, Hopital Bicetre, Hopitaux Universitaires Paris–Sud, Paris, France
- Assistance Publique Hôpitaux de Paris, Université Paris–Sud, Paris, France
| | - Maurizio Cecconi
- Humanitas Clinical and Research Center, Department of Biomedical Sciences, Humanitas University, Milan, Italy
| | - Giorgio Ferri
- Unidad de Cuidados Intensivos, Hospital Barros Luco Trudeau, Santiago, Chile
| | - Manuel Jibaja
- Unidad de Cuidados Intensivos, Hospital Eugenio Espejo, Escuela de Medicina, Universidad Internacional del Ecuador, Quito
| | - Ronald Pairumani
- Unidad de Cuidados Intensivos, Hospital Barros Luco Trudeau, Santiago, Chile
| | - Paula Fernández
- Unidad de Pacientes Críticos, Hospital Guillermo Grant Benavente, Concepción, Chile
| | - Diego Barahona
- Unidad de Cuidados Intensivos, Hospital General Docente de Calderón, Universidad Central del Ecuador, Quito
| | - Vladimir Granda-Luna
- Unidad de Cuidados Intensivos, Hospital San Francisco, Pontificia Universidad Católica de Quito, Quito, Ecuador
| | - Alexandre Biasi Cavalcanti
- HCor Research Institute–Hospital do Coração, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Jan Bakker
- Departmento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago
- Department of Intensive Care Adults, Erasmus MC University Medical Center, Rotterdam, the Netherlands
- Department of Pulmonary and Critical Care, New York University, New York, New York
- Division of Pulmonary, Allergy, and Critical Care Medicine, Columbia University Medical Center, New York, New York
| |
Collapse
|
13
|
Castro R, Nin N, Ríos F, Alegría L, Estenssoro E, Murias G, Friedman G, Jibaja M, Ospina-Tascon G, Hurtado J, Marín MDC, Machado FR, Cavalcanti AB, Dubin A, Azevedo L, Cecconi M, Bakker J, Hernandez G. The practice of intensive care in Latin America: a survey of academic intensivists. Crit Care 2018; 22:39. [PMID: 29463310 PMCID: PMC5820791 DOI: 10.1186/s13054-018-1956-6] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 01/16/2018] [Indexed: 12/29/2022]
Abstract
Background Intensive care medicine is a relatively young discipline that has rapidly grown into a full-fledged medical subspecialty. Intensivists are responsible for managing an ever-increasing number of patients with complex, life-threatening diseases. Several factors may influence their performance, including age, training, experience, workload, and socioeconomic context. The aim of this study was to examine individual- and work-related aspects of the Latin American intensivist workforce, mainly with academic appointments, which might influence the quality of care provided. In consequence, we conducted a cross-sectional study of intensivists at public and private academic and nonacademic Latin American intensive care units (ICUs) through a web-based electronic survey submitted by email. Questions about personal aspects, work-related topics, and general clinical workflow were incorporated. Results Our study comprised 735 survey respondents (53% return rate) with the following country-specific breakdown: Brazil (29%); Argentina (19%); Chile (17%); Uruguay (12%); Ecuador (9%); Mexico (7%); Colombia (5%); and Bolivia, Peru, Guatemala, and Paraguay combined (2%). Latin American intensivists were predominantly male (68%) young adults (median age, 40 [IQR, 35–48] years) with a median clinical ICU experience of 10 (IQR, 5–20) years. The median weekly workload was 60 (IQR, 47–70) h. ICU formal training was between 2 and 4 years. Only 63% of academic ICUs performed multidisciplinary rounds. Most intensivists (85%) reported adequate conditions to manage patients with septic shock in their units. Unsatisfactory conditions were attributed to insufficient technology (11%), laboratory support (5%), imaging resources (5%), and drug shortages (5%). Seventy percent of intensivists participated in research, and 54% read scientific studies regularly, whereas 32% read no more than one scientific study per month. Research grants and pharmaceutical sponsorship are unusual funding sources in Latin America. Although Latin American intensivists are mostly unsatisfied with their income (81%), only a minority (27%) considered changing to another specialty before retirement. Conclusions Latin American intensivists constitute a predominantly young adult workforce, mostly formally trained, have a high workload, and most are interested in research. They are under important limitations owing to resource constraints and overt dissatisfaction. Latin America may be representative of other world areas with similar challenges for intensivists. Specific initiatives aimed at addressing these situations need to be devised to improve the quality of critical care delivery in Latin America. Electronic supplementary material The online version of this article (10.1186/s13054-018-1956-6) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Ricardo Castro
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Catolica de Chile, Diagonal Paraguay #362, Santiago Centro, RM, 8330077, Chile. .,Unidad de Paciente Critico Adultos, Hospital Clinico UC-CHRISTUS, Marcoleta #367, Santiago Centro, RM, 8330077, Chile.
| | - Nicolas Nin
- Hospital Español, Avenida General Garibaldi, 1729 esq., Rocha, Montevideo, Uruguay.,Agencia Nacional de Investigación e Innovación (ANII), Montevideo, Uruguay
| | - Fernando Ríos
- Servicio de Terapia Intensiva. Hospital Alejandro Posadas, Avenida Presidente Arturo U. Illia, El Palomar, Buenos Aires, Argentina
| | - Leyla Alegría
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Catolica de Chile, Diagonal Paraguay #362, Santiago Centro, RM, 8330077, Chile
| | - Elisa Estenssoro
- Servicio de Terapia Intensiva, Hospital Interzonal de Agudos General San Martin de La Plata, Avenida 1 1794, Casco Urbano, La Plata, Buenos Aires, B1904CFU, Argentina
| | - Gastón Murias
- Clinica Bazterrica and Clinica Santa Isabel, Billinghurst 2072 (esquina Juncal), Ciudad Autónoma de Buenos Aires, Argentina
| | - Gilberto Friedman
- Departamento de Medicina Interna - Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos, 2350 - Santa Cecilia, Porto Alegre, RS, 90035-903, Brasil
| | - Manuel Jibaja
- Escuela de Medicina, Universidad Internacional del Ecuador, Unidad de Cuidados Intensivos, Hospital Eugenio Espejo, Avenida Gran Colombia, Quito, 170136, Ecuador
| | - Gustavo Ospina-Tascon
- Department of Intensive Care Medicine, Fundación Valle del Lili - Universidad ICESI, Cali, Carrera 98 No. 18-49, Cali, Valle del Cauca, Colombia
| | - Javier Hurtado
- Hospital Español, Avenida General Garibaldi, 1729 esq., Rocha, Montevideo, Uruguay.,Agencia Nacional de Investigación e Innovación (ANII), Montevideo, Uruguay
| | - María Del Carmen Marín
- Unidad de Cuidados Intensivos, Hospital Regional 1 Octubre, ISSSTE, Avenida Instituto Politécnico Nacional 1669. Colonia Lindavista, c.p., Delegación Gustavo A. Madero, Ciudad de México, 07300, México
| | - Flavia R Machado
- Anesthesiology, Pain and Intensive Care Department, Federal University of Sao Paulo, Rua Sena Madureira, 1500 - Clementino, São Paulo, SP, 04021-001, Brasil
| | - Alexandre Biasi Cavalcanti
- Research Institute HCor, Hospital do Coração, Rua. Desembargador Eliseu Guilherme, 147 - Paraíso, São Paulo, SP, 04004-030, Brasil
| | - Arnaldo Dubin
- Catedra de Farmacología, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, Buenos Aires, Argentina.,Servicio de Terapia Intensiva, Sanatorio Otamendi y Miroli, Azcuénaga 894, CABA, C1115AAB, Argentina
| | - Luciano Azevedo
- Anesthesiology, Pain and Intensive Care Department, Federal University of Sao Paulo, Sao Paulo, Brazil.,Emergency Medicine Department, University of Sao Paulo, Hospital Sirio-Libanes, Rua Dona Adma Jafet, 91 - Vista, Sao Paulo, SP, 01308-050, Brasil
| | - Maurizio Cecconi
- St. George's University Hospitals NHS Foundation Trust, London, SW17 0QT, UK
| | - Jan Bakker
- Division of Pulmonary, Allergy, and Critical Care Medicine, Columbia University Medical Center, 630 West 168th Street, New York, NY, 10032, USA
| | - Glenn Hernandez
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Catolica de Chile, Diagonal Paraguay #362, Santiago Centro, RM, 8330077, Chile.,Unidad de Paciente Critico Adultos, Hospital Clinico UC-CHRISTUS, Marcoleta #367, Santiago Centro, RM, 8330077, Chile
| | | |
Collapse
|
14
|
Larrea RA, Gutiérrez AM, Hurtado J, Ramírez JM, Garrido B, Sanchis P. Compact focusing grating couplers for silicon horizontal slot waveguides. Opt Lett 2017; 42:490-493. [PMID: 28146509 DOI: 10.1364/ol.42.000490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this Letter, we present the design, simulation (2D and 3D), fabrication, and experimental characterization of compact and fully etched focusing gratings for a horizontal slot waveguide based on a silicon nitride layer sandwiched between amorphous silicon and a silicon-on-insulator. The measured coupling losses are about 4 dB with a 3 dB bandwidth of 38 nm. The fully etched configuration allows the fabrication in a single lithography step.
Collapse
|
15
|
Molina V, Rauhalahti M, Hurtado J, Fliegl H, Sundholm D, Muñoz-Castro A. Aromaticity introduced by antiferromagnetic ligand mediated metal–metal interactions. Insights from the induced magnetic response in [Cu6(dmPz)6(OH)6]. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00023e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Ligand-mediated antiferromagnetic coupling induces aromatic-ring behavior.
Collapse
Affiliation(s)
- V. Molina
- Grupo de Química Inorgánica y Materiales Moleculares
- Universidad Autonoma de Chile
- Santiago
- Chile
- Liceo Politécnico Ciencia y Tecnología
| | - M. Rauhalahti
- Department of Chemistry
- University of Helsinki
- Finland
| | - J. Hurtado
- Departamento de Química
- Universidad de los Andes
- Bogotá
- Colombia
| | - H. Fliegl
- Centre for Theoretical and Computational Chemistry (CTCC)
- Department of Chemistry
- University of Oslo
- Oslo
- Norway
| | - D. Sundholm
- Department of Chemistry
- University of Helsinki
- Finland
| | - A. Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares
- Universidad Autonoma de Chile
- Santiago
- Chile
- Doctorado en Fisicoquímica Molecular
| |
Collapse
|
16
|
Muriel A, Peñuelas O, Frutos-Vivar F, Arroliga AC, Abraira V, Thille AW, Brochard L, Nin N, Davies AR, Amin P, Du B, Raymondos K, Rios F, Violi DA, Maggiore SM, Soares MA, González M, Abroug F, Bülow HH, Hurtado J, Kuiper MA, Moreno RP, Zeggwagh AA, Villagómez AJ, Jibaja M, Soto L, D’Empaire G, Matamis D, Koh Y, Anzueto A, Ferguson ND, Esteban A. Impact of sedation and analgesia during noninvasive positive pressure ventilation on outcome: a marginal structural model causal analysis. Intensive Care Med 2015; 41:1586-600. [DOI: 10.1007/s00134-015-3854-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 04/28/2015] [Indexed: 10/23/2022]
|
17
|
Sutherasan Y, Peñuelas O, Muriel A, Vargas M, Frutos-Vivar F, Brunetti I, Raymondos K, D'Antini D, Nielsen N, Ferguson ND, Böttiger BW, Thille AW, Davies AR, Hurtado J, Rios F, Apezteguía C, Violi DA, Cakar N, González M, Du B, Kuiper MA, Soares MA, Koh Y, Moreno RP, Amin P, Tomicic V, Soto L, Bülow HH, Anzueto A, Esteban A, Pelosi P. Management and outcome of mechanically ventilated patients after cardiac arrest. Crit Care 2015; 19:215. [PMID: 25953483 PMCID: PMC4457998 DOI: 10.1186/s13054-015-0922-9] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [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: 02/04/2015] [Accepted: 04/13/2015] [Indexed: 11/13/2022] Open
Abstract
Introduction The aim of this study was to describe and compare the changes in ventilator management and complications over time, as well as variables associated with 28-day hospital mortality in patients receiving mechanical ventilation (MV) after cardiac arrest. Methods We performed a secondary analysis of three prospective, observational multicenter studies conducted in 1998, 2004 and 2010 in 927 ICUs from 40 countries. We screened 18,302 patients receiving MV for more than 12 hours during a one-month-period. We included 812 patients receiving MV after cardiac arrest. We collected data on demographics, daily ventilator settings, complications during ventilation and outcomes. Multivariate logistic regression analysis was performed to calculate odds ratios, determining which variables within 24 hours of hospital admission were associated with 28-day hospital mortality and occurrence of acute respiratory distress syndrome (ARDS) and pneumonia acquired during ICU stay at 48 hours after admission. Results Among 812 patients, 100 were included from 1998, 239 from 2004 and 473 from 2010. Ventilatory management changed over time, with decreased tidal volumes (VT) (1998: mean 8.9 (standard deviation (SD) 2) ml/kg actual body weight (ABW), 2010: 6.7 (SD 2) ml/kg ABW; 2004: 9 (SD 2.3) ml/kg predicted body weight (PBW), 2010: 7.95 (SD 1.7) ml/kg PBW) and increased positive end-expiratory pressure (PEEP) (1998: mean 3.5 (SD 3), 2010: 6.5 (SD 3); P <0.001). Patients included from 2010 had more sepsis, cardiovascular dysfunction and neurological failure, but 28-day hospital mortality was similar over time (52% in 1998, 57% in 2004 and 52% in 2010). Variables independently associated with 28-day hospital mortality were: older age, PaO2 <60 mmHg, cardiovascular dysfunction and less use of sedative agents. Higher VT, and plateau pressure with lower PEEP were associated with occurrence of ARDS and pneumonia acquired during ICU stay. Conclusions Protective mechanical ventilation with lower VT and higher PEEP is more commonly used after cardiac arrest. The incidence of pulmonary complications decreased, while other non-respiratory organ failures increased with time. The application of protective mechanical ventilation and the prevention of single and multiple organ failure may be considered to improve outcome in patients after cardiac arrest. Electronic supplementary material The online version of this article (doi:10.1186/s13054-015-0922-9) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Yuda Sutherasan
- Department of Medicine, Ramathibodi Hospital, Mahidol University, RAMA VI road, Bangkok, 10400, Thailand. .,Department of Surgical Sciences and Integrated Diagnostics IRCCS AOU San Martino-IST, Largo Rosanna Benzi 8, Genoa, 16131, Italy.
| | - Oscar Peñuelas
- Hospital Universitario Infanta Cristina and CIBER Enfermedades Respiratorias, Avenida 9 de junio, 2, 28981, Parla, Madrid, Spain.
| | - Alfonso Muriel
- Biostatistics Unit, Ramón y Cajal Institute and Research Health, IRYCIS, CIBERESP, Hospital Ramón y Cajal Ctra., Colmenar Km 9.100, 28034, Madrid, Spain.
| | - Maria Vargas
- Department of Neurosciences, Odonthostomatological and Reproductive Sciences, University of Naples, "Federico II", Naples, 80100, Italy.
| | - Fernando Frutos-Vivar
- Hospital Universitario de Getafe and CIBER Enfermedades Respiratorias, Carretera de Toledo Km 12.500, 28905, Madrid, Spain.
| | - Iole Brunetti
- Department of Surgical Sciences and Integrated Diagnostics IRCCS AOU San Martino-IST, Largo Rosanna Benzi 8, Genoa, 16131, Italy.
| | - Konstantinos Raymondos
- Anaesthesiology and Intensive Care Medicine, Medical School Hanover, 544 Carl-Neuberg-Strasse 1, D-30625, Hanover, Germany.
| | - Davide D'Antini
- Dipartimento di Anestesia, Rianimazione e Terapia Intensiva, Universita' degli Studi di Foggia, Viale Pinto, 1, 71100, Foggia, Italy.
| | - Niklas Nielsen
- Department of Anesthesia and Intensive Care, Intensive Care Unit, Helsingborg Hospital, S Vallgatan 5, 251 87, Helsingborg, Sweden.
| | - Niall D Ferguson
- Interdepartmental Division of Critical Care Medicine, Department of Medicine, University of Toronto, University Health Network and Mount Sinai Hospital, 585 University Avenue, Toronto, M5G 2N2, ON, Canada.
| | - Bernd W Böttiger
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital of Cologne, Kerpener Straße 62, 50937, Köln, Germany.
| | - Arnaud W Thille
- Cenre Hospitalier Universitaire de Poitiers, Réanimation Médicale, INSERM CIC 1402, Université de Poitiers, Poitiers, 86000, France.
| | - Andrew R Davies
- Department of Epidemiology and Preventive Medicine, ANZIC-RC, Monash University, Commercial Road, Melbourne, 3004, Australia.
| | - Javier Hurtado
- Dept. Pathophysiology, Hospital de Clínicas, Av. Italia s/n. Universidad de la Republica, Montevideo, 11600, Uruguay.
| | - Fernando Rios
- Department of Intensive Care, Hospital Nacional Prof. Alejandro Posadas El Palomar, Buenos Aires, CP, 1684, Argentina.
| | - Carlos Apezteguía
- Department of Intensive Care, Hospital Nacional Prof. Alejandro Posadas El Palomar, Buenos Aires, CP, 1684, Argentina.
| | - Damian A Violi
- Medical Staff-Critical Care, Hospital Prof. Dr. Luis Guemes, Buenos Aires, Argentina.
| | - Nahit Cakar
- Anesthesiology and Intensive Care, Istanbul University, Istanbul Medical Faculty, Millet cad., 34093, Istanbul, Turkey.
| | - Marco González
- Clínica Medellín & Universidad Pontificia Bolivariana, Medellín, Colombia.
| | - Bin Du
- Medical ICU, Peking Union Medical College Hospital, 1 Shuai Fu Yuan, Beijing, 100730, People's Republic of China.
| | - Michael A Kuiper
- Department of Intensive Care, Medical Center Leeuwarden Henri Dunantweg 2, 8934, AD, Leeuwarden, The Netherlands.
| | | | - Younsuck Koh
- Department of Pulmonary and Critical Care Medicine Asan Medical Center, Univ. of Ulsan College of Medicine, 388-1 Pungnap Dong Songpa Ku Seoul, 138-736, Seoul, Republic of Korea.
| | - Rui P Moreno
- Unidade de Cuidados Intensivos Neurocríticos Hospital de São José Centro Hospitalarde Lisboa Central, E.P.E. R. José António Serrano, 1150-199, Lisbon, Portugal.
| | - Pravin Amin
- Bombay Hospital Institute of Medical Sciences, 12 New Marine Lines, Mumbai, 400020, India.
| | | | - Luis Soto
- Instituto Nacional del Tórax de Santiago, Santiago, Chile.
| | - Hans-Henrik Bülow
- Anaesthesiology and Intensive Care, Holbaek Hospitall, Region Zealand University of Copenhagen, Smedelundsgade, 60 4300, Holbaek, Denmark.
| | - Antonio Anzueto
- South Texas Veterans Health Care System and University of Texas Health Science Center, 111 E 7400 Merton Minter blvd, 78229, San Antonio, TX, USA.
| | - Andrés Esteban
- Hospital Universitario de Getafe and CIBER Enfermedades Respiratorias, Carretera de Toledo Km 12.500, 28905, Madrid, Spain.
| | - Paolo Pelosi
- Department of Surgical Sciences and Integrated Diagnostics IRCCS AOU San Martino-IST, Largo Rosanna Benzi 8, Genoa, 16131, Italy.
| | | |
Collapse
|
18
|
Esteban A, Frutos-Vivar F, Muriel A, Ferguson ND, Peñuelas O, Abraira V, Raymondos K, Rios F, Nin N, Apezteguía C, Violi DA, Thille AW, Brochard L, González M, Villagomez AJ, Hurtado J, Davies AR, Du B, Maggiore SM, Pelosi P, Soto L, Tomicic V, D'Empaire G, Matamis D, Abroug F, Moreno RP, Soares MA, Arabi Y, Sandi F, Jibaja M, Amin P, Koh Y, Kuiper MA, Bülow HH, Zeggwagh AA, Anzueto A. Evolution of mortality over time in patients receiving mechanical ventilation. Am J Respir Crit Care Med 2013; 188:220-30. [PMID: 23631814 DOI: 10.1164/rccm.201212-2169oc] [Citation(s) in RCA: 417] [Impact Index Per Article: 37.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Baseline characteristics and management have changed over time in patients requiring mechanical ventilation; however, the impact of these changes on patient outcomes is unclear. OBJECTIVES To estimate whether mortality in mechanically ventilated patients has changed over time. METHODS Prospective cohort studies conducted in 1998, 2004, and 2010, including patients receiving mechanical ventilation for more than 12 hours in a 1-month period, from 927 units in 40 countries. To examine effects over time on mortality in intensive care units, we performed generalized estimating equation models. MEASUREMENTS AND MAIN RESULTS We included 18,302 patients. The reasons for initiating mechanical ventilation varied significantly among cohorts. Ventilatory management changed over time (P < 0.001), with increased use of noninvasive positive-pressure ventilation (5% in 1998 to 14% in 2010), a decrease in tidal volume (mean 8.8 ml/kg actual body weight [SD = 2.1] in 1998 to 6.9 ml/kg [SD = 1.9] in 2010), and an increase in applied positive end-expiratory pressure (mean 4.2 cm H2O [SD = 3.8] in 1998 to 7.0 cm of H2O [SD = 3.0] in 2010). Crude mortality in the intensive care unit decreased in 2010 compared with 1998 (28 versus 31%; odds ratio, 0.87; 95% confidence interval, 0.80-0.94), despite a similar complication rate. Hospital mortality decreased similarly. After adjusting for baseline and management variables, this difference remained significant (odds ratio, 0.78; 95% confidence interval, 0.67-0.92). CONCLUSIONS Patient characteristics and ventilation practices have changed over time, and outcomes of mechanically ventilated patients have improved. Clinical trials registered with www.clinicaltrials.gov (NCT01093482).
Collapse
Affiliation(s)
- Andrés Esteban
- Hospital Universitario de Getafe & Centro de Investigación Biomédica en red de Enfermedades Respiratorias, Spain.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Hurtado J, Iglesias PP, Lipko P, Hasson E. Multiple paternity and sperm competition in the sibling speciesDrosophila buzzatiiandDrosophila koepferae. Mol Ecol 2013; 22:5016-26. [DOI: 10.1111/mec.12436] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 06/28/2013] [Accepted: 07/03/2013] [Indexed: 11/29/2022]
Affiliation(s)
- J. Hurtado
- Departamento de Ecología, Genética y Evolución; Facultad de Ciencias Exactas y Naturales; Instituto de Ecología Genética y Evolución de la ciudad de Buenos Aires; CONICET-Universidad de Buenos Aires (UBA); Ciudad Universitaria; Pabellón II C1428EGA Buenos Aires Argentina
| | - P. P. Iglesias
- Departamento de Ecología, Genética y Evolución; Facultad de Ciencias Exactas y Naturales; Instituto de Ecología Genética y Evolución de la ciudad de Buenos Aires; CONICET-Universidad de Buenos Aires (UBA); Ciudad Universitaria; Pabellón II C1428EGA Buenos Aires Argentina
| | - P. Lipko
- Departamento de Ecología, Genética y Evolución; Facultad de Ciencias Exactas y Naturales; Instituto de Ecología Genética y Evolución de la ciudad de Buenos Aires; CONICET-Universidad de Buenos Aires (UBA); Ciudad Universitaria; Pabellón II C1428EGA Buenos Aires Argentina
| | - E. Hasson
- Departamento de Ecología, Genética y Evolución; Facultad de Ciencias Exactas y Naturales; Instituto de Ecología Genética y Evolución de la ciudad de Buenos Aires; CONICET-Universidad de Buenos Aires (UBA); Ciudad Universitaria; Pabellón II C1428EGA Buenos Aires Argentina
| |
Collapse
|
20
|
Cardinal-Fernández P, García Gabarrot G, Echeverria P, Zum G, Hurtado J, Rieppi G. Clinical and microbiological aspects of acute community-acquired pneumonia due to Streptococcus pneumoniae. Rev Clin Esp 2013. [DOI: 10.1016/j.rceng.2012.12.001] [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: 11/28/2022]
|
21
|
Cardinal-Fernández P, García Gabarrot G, Echeverria P, Zum G, Hurtado J, Rieppi G. Aspectos clínicos y microbiológicos de la neumonía aguda comunitaria a Streptococcus pneumoniae. Rev Clin Esp 2013. [DOI: 10.1016/j.rce.2012.09.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
22
|
Chowell G, Viboud C, Simonsen L, Miller MA, Hurtado J, Soto G, Vargas R, Guzman MA, Ulloa M, Munayco CV. The 1918-1920 influenza pandemic in Peru. Vaccine 2012; 29 Suppl 2:B21-6. [PMID: 21757099 DOI: 10.1016/j.vaccine.2011.02.048] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2010] [Revised: 01/13/2011] [Accepted: 02/15/2011] [Indexed: 11/24/2022]
Abstract
BACKGROUND Increasing our knowledge of past influenza pandemic patterns in different regions of the world is crucial to guide preparedness plans against future influenza pandemics. Here, we undertook extensive archival collection efforts from three representative cities of Peru-Lima in the central coast, Iquitos in the northeastern Amazon region, Ica in the southern coast-to characterize the temporal, age and geographic patterns of the 1918-1920 influenza pandemic in this country. MATERIALS AND METHODS We analyzed historical documents describing the 1918-1920 influenza pandemic in Peru and retrieved individual mortality records from local provincial archives for quantitative analysis. We applied seasonal excess mortality models to daily and monthly respiratory mortality rates for 1917-1920 and quantified transmissibility estimates based on the daily growth rate in respiratory deaths. RESULTS A total of 52,739 individual mortality records were inspected from local provincial archives. We found evidence for an initial mild pandemic wave during July-September 1918 in Lima, identified a synchronized severe pandemic wave of respiratory mortality in all three locations during November 1918-February 1919, and a severe pandemic wave during January 1920-March 1920 in Lima and July-October 1920 in Ica. There was no recrudescent pandemic wave in 1920 in Iquitos. Remarkably, Lima experienced the brunt of the 1918-1920 excess mortality impact during the 1920 recrudescent wave, with all age groups experiencing an increase in all cause excess mortality from 1918-1919 to 1920. Middle age groups experienced the highest excess mortality impact, relative to baseline levels, in the 1918-1919 and 1920 pandemic waves. Cumulative excess mortality rates for the 1918-1920 pandemic period were higher in Iquitos (2.9%) than Lima (1.6%). The mean reproduction number for Lima was estimated in the range 1.3-1.5. CONCLUSIONS We identified synchronized pandemic waves of intense excess respiratory mortality during November 1918-February 1919 in Lima, Iquitos, Ica, followed by asynchronous recrudescent waves in 1920. Cumulative data from quantitative studies of the 1918 influenza pandemic in Latin American settings have confirmed the high mortality impact associated with this pandemic. Further historical studies in lesser studied regions of Latin America, Africa, and Asia are warranted for a full understanding of the global impact of the 1918 pandemic virus.
Collapse
Affiliation(s)
- G Chowell
- Mathematical, Computational & Modeling Sciences Center, School of Human Evolution and Social Change, Arizona State University, Tempe, AZ 85287, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Lombardi R, Nin N, Lorente JA, Frutos-Vivar F, Ferguson ND, Hurtado J, Apezteguia C, Desmery P, Raymondos K, Tomicic V, Cakar N, González M, Elizalde J, Nightingale P, Abroug F, Jibaja M, Arabi Y, Moreno R, Matamis D, Anzueto A, Esteban A. An Assessment of the Acute Kidney Injury Network Creatinine-Based Criteria in Patients Submitted to Mechanical Ventilation. Clin J Am Soc Nephrol 2011; 6:1547-55. [DOI: 10.2215/cjn.09531010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
24
|
Nin N, Lorente JA, Soto L, Ríos F, Hurtado J, Arancibia F, Ugarte S, Echevarría E, Cardinal P, Saldarini F, Bagnulo H, Cortés I, Bujedo G, Ortega C, Frutos F, Esteban A. Acute kidney injury in critically ill patients with 2009 influenza A (H1N1) viral pneumonia: an observational study. Intensive Care Med 2011; 37:768-74. [PMID: 21394630 PMCID: PMC7095219 DOI: 10.1007/s00134-011-2167-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2010] [Accepted: 10/22/2010] [Indexed: 01/03/2023]
Abstract
OBJECTIVE To describe the incidence, risk factors, and impact on mortality of acute kidney injury (AKI) in patients with 2009 influenza A (H1N1) viral pneumonia requiring mechanical ventilation. DESIGN Observational cohort study. PATIENTS AND METHODS AKI was defined as risk, injury or failure, according to the RIFLE classification. Early and late AKI were defined as AKI occurring on intensive care unit (ICU) day 2 or before, or after ICU day 2, respectively. Demographic data and information on organ dysfunction were collected daily. RESULTS Of 84 patients, AKI developed in 43 patients (51%). Twenty (24%) needed renal replacement therapy. Early and late AKI were found in 28 (33%) and 15 (18%) patients, respectively. Patients with AKI, as compared with patients without AKI, had higher Acute Physiology and Chronic Health Evaluation (APACHE) II score and ICU mortality (72% versus 39%, p < 0.01) and presented on admission more marked cardiovascular, respiratory, and hematological dysfunction. Patients with early but not late AKI presented on admission higher APACHE II score and more marked organ dysfunction, as compared with patients without AKI. ICU mortality was higher in late versus early AKI (93% versus 61%, p < 0.001). On multivariate analysis, only APACHE II score and late but not early AKI [odds ratio (OR) 1.1 (95% confidence interval 1.0-1.1) and 15.1 (1.8-130.7), respectively] were associated with mortality. CONCLUSIONS AKI is a frequent complication of 2009 influenza A (H1N1) viral pneumonia. AKI developing after 2 days in ICU appears to be associated with different risk factors than early AKI, and is related to a higher mortality rate.
Collapse
Affiliation(s)
- N. Nin
- Intensive Care Department, Hospital Universitario de Getafe & CIBER de Enfermedades Respiratorias, Carretera de Toledo Km 12,500, 28905 Getafe, Madrid Spain
| | - J. A. Lorente
- Intensive Care Department, Hospital Universitario de Getafe & CIBER de Enfermedades Respiratorias, Carretera de Toledo Km 12,500, 28905 Getafe, Madrid Spain
| | - L. Soto
- Instituto Nacional del Tórax, Santiago de Chile, Chile
| | - F. Ríos
- Hospital Nacional Profesor A. Posadas, El Palomar, Argentina
| | - J. Hurtado
- Hospital Español Juan J. Crottogini, Montevideo, Uruguay
| | - F. Arancibia
- Instituto Nacional del Tórax, Santiago de Chile, Chile
| | - S. Ugarte
- Clínica Indisa, Santiago de Chile, Chile
| | | | - P. Cardinal
- Sanatorio CASMU, Montevideo, Uruguay
- Hospital Central de las Fuerzas Armada, Montevideo, Uruguay
| | - F. Saldarini
- Hospital Donación Francisco Santojanni (CABA), Buenos Aires, Argentina
| | | | - I. Cortés
- Intensive Care Department, Hospital Universitario de Getafe & CIBER de Enfermedades Respiratorias, Carretera de Toledo Km 12,500, 28905 Getafe, Madrid Spain
| | - G. Bujedo
- Universidad Católica de Chile, Santiago, Chile
| | - C. Ortega
- Hospital Regional de Concepción, Concepción, Chile
| | - F. Frutos
- Intensive Care Department, Hospital Universitario de Getafe & CIBER de Enfermedades Respiratorias, Carretera de Toledo Km 12,500, 28905 Getafe, Madrid Spain
| | - A. Esteban
- Intensive Care Department, Hospital Universitario de Getafe & CIBER de Enfermedades Respiratorias, Carretera de Toledo Km 12,500, 28905 Getafe, Madrid Spain
| |
Collapse
|
25
|
Anzueto A, Frutos-Vivar F, Esteban A, Bensalami N, Marks D, Raymondos K, Apezteguia C, Arabi Y, Hurtado J, Gonzalez M, Tomicic V, Abroug F, Elizalde J, Cakar N, Pelosi P, Ferguson ND. Influence of body mass index on outcome of the mechanically ventilated patients. Thorax 2010; 66:66-73. [DOI: 10.1136/thx.2010.145086] [Citation(s) in RCA: 119] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
26
|
Nin N, Soto L, Hurtado J, Lorente JA, Buroni M, Arancibia F, Ugarte S, Bagnulo H, Cardinal P, Bugedo G, Echevarría E, Deicas A, Ortega C, Frutos-Vivar F, Esteban A. Clinical characteristics and outcomes of patients with 2009 influenza A(H1N1) virus infection with respiratory failure requiring mechanical ventilation. J Crit Care 2010; 26:186-92. [PMID: 20688465 DOI: 10.1016/j.jcrc.2010.05.031] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2010] [Revised: 05/10/2010] [Accepted: 05/17/2010] [Indexed: 01/31/2023]
Abstract
PURPOSE The purpose of the study was to describe the clinical characteristics and outcomes of critically ill patients with 2009 influenza A(H1N1). METHODS An observational study of patients with confirmed or probable 2009 influenza A(H1N1) and respiratory failure requiring mechanical ventilation was performed. RESULTS We studied 96 patients (mean age, 45 [14] years [mean, SD]; 44% female). Shock and acute respiratory distress syndrome were diagnosed during the first 72 hours of admission in 43% and 72% of patients, respectively. Noninvasive positive pressure ventilation was used in 45% of the patients, but failed in 77% of them. Bacterial pneumonia was diagnosed in 33% of cases, 8% during the first week (due to community-acquired microorganisms) and 25% after the first week (due to gram-negative bacilli and resistant gram-positive cocci). Intensive care unit mortality was 50%. Nonsurvivors differed from survivors in the prevalence of cardiovascular, respiratory, and hematologic failure on admission and late pneumonia. Reported causes of death were refractory hypoxia, multiorgan failure, and shock (50%, 38%, and 12% of all causes of death, respectively). CONCLUSIONS Patients with 2009 influenza A(H1N1) and respiratory failure requiring mechanical ventilation often present with clinical criteria of acute respiratory distress syndrome and shock. Bacterial pneumonia is a frequent complication. Mortality is high and is primarily due to refractory hypoxia.
Collapse
Affiliation(s)
- Nicolás Nin
- Hospital Universitario de Getafe & CIBER de Enfermedades Respiratorias, Madrid, Spain
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Ortiz G, Frutos-Vivar F, Ferguson ND, Esteban A, Raymondos K, Apezteguía C, Hurtado J, González M, Tomicic V, Elizalde J, Abroug F, Arabi Y, Pelosi P, Anzueto A. Outcomes of patients ventilated with synchronized intermittent mandatory ventilation with pressure support: a comparative propensity score study. Chest 2009; 137:1265-77. [PMID: 20022967 DOI: 10.1378/chest.09-2131] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
BACKGROUND Few data are available regarding the benefits of one mode over another for ventilatory support. We set out to compare clinical outcomes of patients receiving synchronized intermittent mandatory ventilation with pressure support (SIMV-PS) compared with assist-control (A/C) ventilation as their primary mode of ventilatory support. METHODS This was a secondary analysis of an observational study conducted in 349 ICUs from 23 countries. A propensity score stratified analysis was used to compare 350 patients ventilated with SIMV-PS with 1,228 patients ventilated with A/C ventilation. The primary outcome was in-hospital mortality. RESULTS In a logistic regression model, patients were more likely to receive SIMV-PS if they were from North America, had lower severity of illness, or were ventilated postoperatively or for trauma. SIMV-PS was less likely to be selected if patients were ventilated because of asthma or coma, or if they developed complications such as sepsis or cardiovascular failure during mechanical ventilation. In the stratified analysis according to propensity score, we did not find significant differences in the in-hospital mortality. After adjustment for propensity score, overall effect of SIMV-PS on in-hospital mortality was not significant (odds ratio, 1.04; 95% CI, 0.77-1.42; P = .78). CONCLUSIONS In our cohort of ventilated patients, ventilation with SIMV-PS compared with A/C did not offer any advantage in terms of clinical outcomes, despite treatment-allocation bias that would have favored SIMV-PS.
Collapse
|
28
|
Ramos W, Galarza C, Ronceros G, de Amat F, Teran M, Pichardo L, Juarez D, Anaya R, Mayhua A, Hurtado J, Ortega-Loayza AG. Noninfectious dermatological diseases associated with chronic exposure to mine tailings in a Peruvian district. Br J Dermatol 2008; 159:169-74. [PMID: 18510675 DOI: 10.1111/j.1365-2133.2008.08630.x] [Citation(s) in RCA: 5] [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] [Indexed: 11/29/2022]
Abstract
BACKGROUND Mine tailings are metallic wastes which are deposited in the environment due to mining activity. Long-term exposure to these metals is harmful to human health. OBJECTIVE To determine if chronic exposure to mine tailings constitutes a risk factor for the development of dermatological diseases in the district of San Mateo de Huanchor (Lima, Peru). METHODS An observational case-control study was carried out in the communities of Mayoc, Daza and Tamboraque (exposed to mine tailings, case group) located in the district of San Mateo de Huanchor, and also in the communities of Choccna and Caruya (not exposed to mine tailings, control group) located in the same district. Out of 230 adults, 121 were exposed and 109 were not exposed to mine tailings and out of 135 children, 71 were exposed and 64 were not exposed to mine tailings. RESULTS In the adult group, 71% of the exposed cases had some noninfectious dermatological disease while in the nonexposed group the frequency was 34% [P < 0.001; odds ratio (OR) 5.40; 95% confidence interval (CI) 3.02-9.68]. A statistically significant difference between groups was found for arsenical dermatitis, nonpruritic papulovesicular eruption, atopic dermatitis, contact dermatitis, seborrhoeic dermatitis and xerosis. In the paediatric population, 71 exposed and 64 nonexposed children were evaluated. Sixty-nine per cent of the exposed group had some noninfectious dermatological disease vs. 30% in the nonexposed group (P < 0.001; OR 6.00; 95% CI 2.71-13.31). A statistically significant difference between groups was found for xerosis and atopic dermatitis. CONCLUSION Chronic exposure to mine tailings represents a risk factor for development of noninfectious dermatological diseases in both adults and children.
Collapse
Affiliation(s)
- W Ramos
- Instituto de Investigaciones Clínicas de la Universidad Nacional Mayor de San Marcos, Lima, Peru
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Esteban A, Ferguson ND, Meade MO, Frutos-Vivar F, Apezteguia C, Brochard L, Raymondos K, Nin N, Hurtado J, Tomicic V, González M, Elizalde J, Nightingale P, Abroug F, Pelosi P, Arabi Y, Moreno R, Jibaja M, D'Empaire G, Sandi F, Matamis D, Montañez AM, Anzueto A. Evolution of mechanical ventilation in response to clinical research. Am J Respir Crit Care Med 2007; 177:170-7. [PMID: 17962636 DOI: 10.1164/rccm.200706-893oc] [Citation(s) in RCA: 413] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
RATIONALE Recent literature in mechanical ventilation includes strong evidence from randomized trials. Little information is available regarding the influence of these trials on usual clinical practice. OBJECTIVES To describe current mechanical ventilation practices and to assess the influence of interval randomized trials when compared with findings from a 1998 cohort. METHODS A prospective international observational cohort study, with a nested comparative study performed in 349 intensive care units in 23 countries. We enrolled 4,968 consecutive patients receiving mechanical ventilation over a 1-month period. We recorded demographics and daily data related to mechanical ventilation for the duration of ventilation. We systematically reviewed the literature and developed 11 practice-change hypotheses for the comparative cohort study before seeing these results. In assessing practice changes, we only compared data from the 107 intensive care units (1,675 patients) that also participated in the 1998 cohort (1,383 patients). MEASUREMENTS AND MAIN RESULTS In 2004 compared with 1998, the use of noninvasive ventilation increased (11.1 vs. 4.4%, P < 0.001). Among patients with acute respiratory distress syndrome, tidal volumes decreased (7.4 vs. 9.1 ml/kg, P < 0.001) and positive end-expiratory pressure levels increased slightly (8.7 vs. 7.7 cm H(2)O, P = 0.02). More patients were successfully extubated after their first attempt of spontaneous breathing (77 vs. 62%, P < 0.001). Use of synchronized intermittent mandatory ventilation fell dramatically (1.6 vs. 11%, P < 0.001). Observations confirmed 10 of our 11 practice-change hypotheses. CONCLUSIONS The strong concordance of predicted and observed practice changes suggests that randomized trial results have advanced mechanical ventilation practices internationally.
Collapse
Affiliation(s)
- Andrés Esteban
- Intensive Care Unit, Hospital Universitario de Getafe, Carretera de Toledo Km 12,500, 28905 Getafe, Madrid, Spain.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Valdesuso R, Lacunza J, Jimeno J, Rodriguez J, Hurtado J, Pinar E, García J, Valdés M. Transulnar approach for cardiac catheterization: incidence of complication and how to reduce it. Cardiovascular Revascularization Medicine 2007. [DOI: 10.1016/j.carrev.2007.03.094] [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]
|
31
|
Martinez-Sanchez J, Garcia-Alberola A, Sanchez-Mu oz J, Cerdan-Sanchez M, Teruel-Carrillo F, Hurtado J, Ruiperez-Abizanda J, Valdes-Chavarri M. 141 Usefulness of incremental atrial pacing for evaluating the effectiveness of perinodal slow pathway ablation. Europace 2005. [DOI: 10.1016/eupace/7.supplement_1.21-a] [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: 11/28/2022] Open
Affiliation(s)
| | | | | | | | | | - J. Hurtado
- University Hospital Virgen Arrixaca, Cardiology, El Palmag Spain
| | | | | |
Collapse
|
32
|
Melero R, Adrados M, Fuentes I, Carrillo R, Casado J, Hurtado J, Caramelo C, Martín J. [Progressive deterioration in an elderly patient]. Nefrologia 2004; 24 Suppl 3:64-7. [PMID: 15219072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023] Open
Abstract
Vasculitis is diagnosed with increasing frequency in the elderly. We hereby present the case of an 84-year-old male, who had weight loss, low-degree fever, anemia and epigastric pain. After 14 days of study with the tentative diagnosis of digestive neoplasia, a progressive renal insufficiency was detected. This clinical picture was secondary to ANCA-positive vasculitis. The case poses the differential diagnosis of non-oliguric acute renal failure (FRA) in elder people and the systematics of the study of renal insufficiency in individuals with previously unknown renal function. Also, this patient's history emphasizes the importance of acute deterioration of renal function as a guiding symptom for orienting the interpretation of clinical data. In the present case, a diagnostic hypothesis based only in the pursue of an occult digestive tumor misguided the attention from the main cause of the disease.
Collapse
Affiliation(s)
- R Melero
- Servicio de Nefrología de la Fundación Jiménez Díaz, Madrid
| | | | | | | | | | | | | | | |
Collapse
|
33
|
Abstract
Hypercalcaemia is a common paraneoplastic syndrome caused by the production by tumours of several factors which affect bone resorption and/or tubular calcium reabsorption. Antihypercalcaemic therapy in cancer patients involves rehydration manoeuvres, as well as the use of a variety of available drugs which inhibit bone resorption, namely plicamycin, calcitonin, bisphosphonates and gallium nitrate. While plicamycin is currently out of use because of its considerable toxicity, bisphosphonates have become the standard therapy in hypercalcaemia of malignancy (HM). These compounds are potent inhibitors of bone resorption but they do not affect tubular calcium reabsorption, which limits their efficacy in humoral HM (HHM) cases. In these patients, gallium nitrate should be the therapy of choice. Among the available bisphosphonates, pamidronate administered in a single infusion of 90 mg, normalises serum calcium levels in > 90% of HM patients. A recently introduced bisphosphonate, zoledronate, is likely to replace pamidronate as a first-line therapy in these patients. The effectiveness of calcitonin in HM treatment is limited, although it seems to be useful at the outset in cases with severe symptomatic hypercalcaemia. Future treatment options of HM are likely to include new bone resorption inhibitors, for example, naturally-occurring osteoprotegerin, or alternate approaches aimed at reducing the tumour production of parathyroid hormone-related protein with noncalcaemic analogues of calcitriol or ras-isoprenylation inhibitors. The development of putative therapeutic agents targeted to inhibit distal calcium reabsorption should be valuable in the management of HHM cases.
Collapse
Affiliation(s)
- J Hurtado
- Bone and Mineral Research Laboratory, Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain
| | | |
Collapse
|
34
|
Motellón JL, Jiménez FJ, de Miguel F, Jaras MJ, Díaz A, Hurtado J, Esbrit P. Relationship of plasma bone cytokines with hypercalcemia in cancer patients. Clin Chim Acta 2000; 302:59-68. [PMID: 11074064 DOI: 10.1016/s0009-8981(00)00352-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The pathogenesis of cancer-associated hypercalcemia is not yet completely understood. This syndrome appears to be a consequence of the tumor production of humoral factors, mainly parathyroid hormone related protein (PTHrP). However, patients with humoral hypercalcemia of malignancy have features suggesting that factors other than PTHrP might play a role in this syndrome. We performed a case-control study in cancer patients with and without hypercalcemia. A total of 105 patients with a variety of tumors, 60 of them with hypercalcemia (corrected serum calcium over 2.6 mmol/l), and 45 without hypercalcemia. In a previous study, we demonstrated that plasma PTHrP was highly associated with hypercalcemia in these patients. In the present study, we measured the plasma levels of various bone cytokines: interleukin-1beta (IL-1beta), interleukin-6 (IL-6), transforming growth factor (TGF) alpha, and tumor necrosis factor (TNF) alpha, in these cancer patients. We also determined C-terminal type I procollagen (PICP) and C-terminal telopeptide of type I collagen (ICTP), bone formation and bone resorption markers, respectively, in serum in these patients. We found that these osteolytic cytokines do not increase in plasma by the presence of hypercalcemia. In fact, using a logistic regression analysis, a significant (P<0.02) association was found between the low plasma levels of IL-1beta and TGFalpha and hypercalcemia, independent of plasma PTHrP and the presence of bone metastasis, in these patients. No significant association between the plasma levels of IL-6 or TNFalpha and hypercalcemia was found in these cancer patients. Serum ICTP correlated (r=0.35; P=0.008) with hypercalcemia in these patients, but none of the cytokines studied in plasma correlated with either ICTP or PICP in these hypercalcemic patients. Our data indicate that the circulating levels of several bone cytokines are not enhanced by PTHrP in hypercalcemic cancer patients. The mechanism responsible for the association between the low plasma levels of some of these cytokines and hypercalcemia in these patients remains obscure. However, this finding does not rule out the possible local bone effects of these cytokines, contributing to hypercalcemia in cancer patients.
Collapse
Affiliation(s)
- J L Motellón
- Department of Nephrology, Hospital de la Princesa, Madrid, Spain
| | | | | | | | | | | | | |
Collapse
|
35
|
Motellón JL, Javort Jiménez F, de Miguel F, Jaras MJ, Díaz A, Hurtado J, Esbrit P. Parathyroid hormone-related protein, parathyroid hormone, and vitamin D in hypercalcemia of malignancy. Clin Chim Acta 2000; 290:189-97. [PMID: 10660809 DOI: 10.1016/s0009-8981(99)00181-3] [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 pathogenesis of cancer-associated hypercalcemia is not yet completely understood. In the majority of cancer patients, hypercalcemia appears to be a consequence of the tumor production of parathyroid hormone (PTH)-related protein (PTHrP). However, patients with humoral hypercalcemia of malignancy, in contrast to those with primary hyperparathyroidism, have an uncoupled bone turnover, and they usually have low circulating levels of 1.25(OH)2D3. We performed a case-control study to assess the relationship of plasma PTHrP, PTH and 1.25(OH)2D3 with hypercalcemia in cancer patients with a variety of tumors. Sixty of these patients had hypercalcemia, and 45 were normocalcemic. We measured PTHrP and PTH by immunoradiometric assay (Nichols), and 1.25(OH)2D3 by radioreceptor assay (Nichols), in plasma in both groups of cancer patients. Using a logistic regression analysis, we found that the higher PTHrP in plasma, the higher association with hypercalcemia occurred in these patients. In addition, the decreased plasma levels of PTH and 1.25(OH)2D3 in the majority of cancer patients were found to be significantly associated with hypercalcemia. Our results indicate that the combined determination of PTH, PTHrP and 1.25(OH)2D3 in plasma represents a more comprehensive approach to the investigation of hypercalcemia in cancer patients. Our data also support the role of PTHrP as a humoral factor responsible for hypercalcemia in these patients.
Collapse
Affiliation(s)
- J L Motellón
- Department of Nephrology, Hospital de la Princesa, Madrid, Spain
| | | | | | | | | | | | | |
Collapse
|
36
|
de Miguel F, Motellón JL, Hurtado J, Jiménez FJ, Esbrit P. Comparison of two immunoradiometric assays for parathyroid hormone-related protein in the evaluation of cancer patients with and without hypercalcemia. Clin Chim Acta 1998; 277:171-80. [PMID: 9853700 DOI: 10.1016/s0009-8981(98)00127-2] [Citation(s) in RCA: 12] [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: 10/16/2022]
Abstract
Hypercalcemia is a common paraneoplastic syndrome due to the secretion by tumors of parathyroid hormone-related protein (PTHrP) and/or other osteolytic factors. In the present study, we have measured plasma PTHrP using two immunoradiometric assays for PTHrP, assay N (Nichols) and assay I (INCSTAR), recognizing the 1-86 domain of PTHrP, for the evaluation of malignancy-associated hypercalcemia. The study included 25 tumor patients with hypercalcemia (HCa) [corrected serum calcium (SCa) > or = 2.70 mmol/L], 20 normocalcemic patients with cancer (NCa), and ten healthy control subjects. Plasma PTHrP was either undetectable or within the respective normal range in the majority of NCa patients and in the control subjects, with both assays. Plasma PTHrP was increased in 13 and 15 of HCa cases with assay N and assay I, respectively. PTHrP was elevated in plasma in 5/6 (assay N) and 3/6 (assay I) HCa patients with squamous tumors. However, plasma PTHrP was high in only 2/9 (assay N) and 1/9 (assay I) HCa cases with hematological tumors. Less than 40% of HCa patients with bone metastases, and >75% of those without bone involvement, had elevated plasma PTHrP with both assays. Detectable plasma PTHrP and SCa were significantly correlated using assay N (p = 0.025) and assay I (p = 0.01), in the HCa group. A highly significant correlation (p <0.001) was found between detectable plasma PTHrP with both assays, and a high agreement between them based on simple kappa statistics (p < 0.001), in the latter group. Our results indicate that each assay may be similarly useful in detecting PTHrP hyperproduction in cancer patients.
Collapse
Affiliation(s)
- F de Miguel
- Research Unit, Fundación Jiménez Díaz, Madrid, Spain
| | | | | | | | | |
Collapse
|
37
|
Abstract
Trace metal concentrations (Pb, Cd, Cu and Zn) in Sydney rock oysters (Sacostera commercialis) and sediments (< 53 microns fraction) were determined for six sites in the northern regions of Botany Bay. Levels for lead, cadmium, copper and zinc in oysters ranged (in microgram g-1) from 1.38 to 15.3, 1.81 to 16.3, 56.1 to 212 and 1806 to 2902, respectively. In sediments, levels ranged (in microgram g-1) from 599 to 4081, 3.57 to 91.0, 191 to 1113 and 227 to 1472, respectively. Such values indicated high levels of contamination, especially in the sediments. Indeed, high proportions of the samples displayed metal concentrations that exceeded the prescribed limits for oysters and sediments. No significant correlations in metal concentrations were found between oysters and sediments, suggesting that changes in the sediment metal loading are not solely influencing the levels of bioavailable metal. The results supported the conclusion that different rates and mechanisms of metal accumulation are taking place in the two types of samples. Variability between sites was high, particularly for oysters. Multidimensional scaling identified that the Cooks River (site 3) and La Perouse (site 6) sites were most dissimilar, both to each other as well as to the other four sites. This was a reflection of high contamination in the Cooks River and the generally low levels in the La Perouse reference sample. The configuration was mainly influenced by the sediment parameters, rather than the oyster metal concentrations, indicating the sediment data were better for identifying site similarities. These ordinations provide evidence of the usefulness of multidimensional scaling in elucidating the physico-chemical variability of the sampling sites.
Collapse
Affiliation(s)
- W J Hayes
- Department of Chemistry, Faculty of Business and Technology, University of Western Sydney, Campbelltown, NSW, Australia.
| | | | | | | |
Collapse
|
38
|
López-Durán L, García-López A, Durán L, Hurtado J, Ruiz C, Rodrigo JL. Cardiopulmonary and haemodynamic changes during total hip arthroplasty. Int Orthop 1997; 21:253-8. [PMID: 9349963 PMCID: PMC3617689 DOI: 10.1007/s002640050161] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We report a prospective study of 30 patients who underwent total hip arthroplasty for osteoarthrosis in order to investigate the haemodynamic and respiratory changes which occur during operation. Cement was used in 17 cases and the implants were not cemented in 13. Pulmonary and cardiac function, blood levels of methylmethacrylate monomer, intramedullary pressure and transoesophageal echocardiography were recorded. Two well differentiated echogenic patterns appeared consistently during the operation. The intramedullary pressure became raised as the cement was inserted. The following changes occurred within seconds and continued for some minutes: elevation of mean arterial pressure and mean pulmonary artery pressure; decrease of arterial oxygen tension and of mixed venous PO2, and greater tissue consumption of oxygen. Although we recorded raised concentration of methylmethacrylate monomer in venous blood after the cement was inserted, there is no evidence that the monomer is responsible for the haemodynamic changes which take place.
Collapse
Affiliation(s)
- L López-Durán
- Orthopaedic Surgery and Traumatology Service, University Hospital San Carlos, Madrid
| | | | | | | | | | | |
Collapse
|
39
|
Abstract
OBJECTIVE To determine the presence of tricuspid regurgitation (TR) in patients affected by acute lung injury (ALI) and the adult respiratory distress syndrome (ARDS) during mechanical ventilation with positive end-expiratory pressure (PEEP). DESIGN A prospective clinical study. SETTING 10-bed general intensive care unit in a University Hospital. PATIENTS 7 consecutive patients an age 44.7 +/- 8.6 years with a diagnosis of ALI or ARDS were studied. All were on mechanical ventilation with PEEP. INTERVENTIONS PEEP was increased in steps of 5 cm H2O until the appearance of TR or up to a limit of 20 cm H2O. MEASUREMENTS AND RESULTS Right atrial pressure, pulmonary artery pressure, and wedge pressure were measured and cardiac output was determined by thermodilution. TR was graded from 0 to 3. Standard 2D echocardiographic and pulsed-wave images were obtained at each level of PEEP. PEEP was increased from 4 +/- 3 to 17 +/- 2 cm H2O. Mean PAP increased from 27.7 +/- 2.9 to 36.7 +/- 3.5 mm Hg (p < 0.02) when PEEP was increased. Five patients had competent valves and two had mild TR at baseline. In six out of the seven, TR either developed or increased when PEEP was increased. CONCLUSIONS Our study demonstrated the development of TR after the use of PEEP in patients with ALI and ARDS as a consequence of pulmonary hypertension and right ventricular overloading. Since TR may randomly affect cardiac output values and derived parameters, the assessment of cardiac performance by some techniques such as thermodilution should be used with caution.
Collapse
Affiliation(s)
- H Artucio
- Intensive Care Department, Hospital de Clinicas (University Hospital), Universidad de la Republica, Montevideo, Uruguay
| | | | | | | | | |
Collapse
|
40
|
DeBenedette MA, Chu NR, Pollok KE, Hurtado J, Wade WF, Kwon BS, Watts TH. Role of 4-1BB ligand in costimulation of T lymphocyte growth and its upregulation on M12 B lymphomas by cAMP. J Exp Med 1995; 181:985-92. [PMID: 7532686 PMCID: PMC2191935 DOI: 10.1084/jem.181.3.985] [Citation(s) in RCA: 132] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
K46J B lymphomas express a T cell costimulatory activity that is not inhibited by CTLA-4Ig, anti-B7-1, anti-B7-2, anti-intercellular adhesion molecule 1 or antibodies to heat stable antigen. In this paper we report that this costimulatory activity is mediated at least in part by 4-1BB ligand, a member of the tumor necrosis factor (TNF) gene family that binds to 4-1BB, a T cell activation antigen with homology to the TNF/nerve growth factor receptor family. A fusion protein between 4-1BB and alkaline phosphatase (4-1BB-AP) blocks T cell activation by K46J lymphomas in both an antigen-specific system and with polyclonally (anti-CD3) activated T cells. 4-1BB-AP also blocks antigen presentation by normal spleen cells. When the antigen-presenting cells express B7 molecules as well as 4-1BB ligand, we find that B7 molecules and 4-1BB-AP both contribute to T cell activation. These data suggest that 4-1BB ligand plays an important role in costimulation of IL-2 production and proliferation by T cells. The B lymphoma M12 expresses low levels of 4-1BB-L but can be induced to express higher levels by treatment of the B cells with cAMP, which also induces B7-1 and B7-2 in these cells. Thus cAMP appears to coordinately induce several costimulatory molecules on B cells.
Collapse
Affiliation(s)
- M A DeBenedette
- Department of Immunology, University of Toronto, Ontario, Canada
| | | | | | | | | | | | | |
Collapse
|
41
|
Abstract
The human homologue of 4-1BB (H4-1BB) cDNA was isolated from PMA plus ionomycin-treated human peripheral T-cell cDNA libraries. The amino acid sequence deduced from the nucleotide sequence showed that the protein is composed of 255 amino acids with 2 potential N-linked glycosylation sites. The molecular weight of its protein backbone is calculated to be 27 kDa. The H4-1BB contains features such as signal sequence and transmembrane domain, indicating that it is a receptor protein. This protein showed 60% identity of amino acid sequence to mouse 4-1BB. In the cytoplasmic domain there are 5 regions of amino acid sequences conserved from mouse to human, indicating that these residues might be important in the 4-1BB function. H4-1BB mRNA was detected in unstimulated peripheral blood T cells and was inducible in T-cell lines such as Jurkat and CEM. H4-1BB-AP, a fusion protein between the H4-1BB extracellular domain and alkaline phosphatase, was used to identify the ligand for the H4-1BB. Although the H4-1BB ligand was detected in both T and B cells of human peripheral blood, the ligand was preferentially expressed in primary B cells and B-cell lines. Daudi, a B-cell lymphoma, was one of the B-cell lines that carried a higher number of ligands. Scatchard analysis showed that the Kd = 1.4 x 10(9) M and the number of ligands in Daudi cell was 4.2 x 10(3).
Collapse
MESH Headings
- 3T3 Cells
- 4-1BB Ligand
- Amino Acid Sequence
- Animals
- Antigens, CD
- B-Lymphocytes/metabolism
- Base Sequence
- DNA, Complementary/genetics
- Humans
- Leukemia-Lymphoma, Adult T-Cell/pathology
- Lymphocyte Activation
- Membrane Glycoproteins/chemistry
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/isolation & purification
- Mice
- Molecular Sequence Data
- Molecular Weight
- Peptide Fragments/genetics
- Peptide Fragments/metabolism
- Polymerase Chain Reaction
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/pathology
- Protein Structure, Tertiary
- RNA, Messenger/analysis
- Receptors, Nerve Growth Factor/chemistry
- Receptors, Nerve Growth Factor/genetics
- Receptors, Nerve Growth Factor/isolation & purification
- Receptors, Tumor Necrosis Factor/chemistry
- Receptors, Tumor Necrosis Factor/genetics
- Receptors, Tumor Necrosis Factor/isolation & purification
- Recombinant Fusion Proteins/metabolism
- Sequence Alignment
- Sequence Homology, Amino Acid
- Species Specificity
- T-Lymphocytes/drug effects
- T-Lymphocytes/metabolism
- Tumor Cells, Cultured
- Tumor Necrosis Factor Receptor Superfamily, Member 9
- Tumor Necrosis Factor-alpha/chemistry
Collapse
Affiliation(s)
- Z Zhou
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 56202-5120, USA
| | | | | | | | | | | | | |
Collapse
|
42
|
Talavera Sánchez J, Gómez Fiñana MS, Mauri J, Hurtado J, Polo I, Alemán O. [Thyroplasty in the treatment of functional or paralytic dysphonias]. Acta Otorrinolaringol Esp 1994; 45:461-4. [PMID: 7873239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
In phonosurgery, the laryngeal framework surgery, with several types of thyroplasty, allow a modification of the vocal function through an indirect action over the thyroid cartilage, without surgical invasion of the vocal fold tissues. We describe our experience and review the literature in this field.
Collapse
|
43
|
Rodrigo JL, Alfonso F, Aubele A, Mataix L, Hurtado J, Duran L, Sanchez-Barba A, Lopez Duran L, Zarco P. Transesophageal echocardiographic right atrial findings during prosthetic hip replacement. Am J Cardiol 1994; 73:823-4. [PMID: 8160624 DOI: 10.1016/0002-9149(94)90889-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- J L Rodrigo
- Department of Cardiopulmonary Surgery, Hospital Universitario San Carlos, Madrid, Spain
| | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Pollok KE, Kim YJ, Hurtado J, Zhou Z, Kim KK, Kwon BS. 4-1BB T-cell antigen binds to mature B cells and macrophages, and costimulates anti-mu-primed splenic B cells. Eur J Immunol 1994; 24:367-74. [PMID: 8299685 DOI: 10.1002/eji.1830240215] [Citation(s) in RCA: 166] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
4-1BB is expressed on activated murine T cells and may function as an accessory signaling molecule during T-cell activation. To identify putative 4-1BB ligands, a fusion protein consisting of the extracellular domain of 4-1BB fused to human placental alkaline phosphatase (4-1BB-AP) was constructed. Alkaline phosphatase activity could then be used as an indicator of the relative amount of bound 4-1BB. These studies indicated that 4-1BB-AP specifically bound to the surface of various mature B and macrophage cell lines. 4-1BB-AP bound at low levels to T cell lines (non-activated and anti-CD3-activated), pre-B-cell lines, and an immature macrophage cell line. 4-1BB-AP did not bind to a glial tumor cell line, HeLa cells, or COS cells. In addition, 4-1BB-AP bound at higher levels to F(ab')2 anti-mu-activated primary B cells compared to anti-CD3-activated primary T cells. Scatchard analysis indicated that the A20 B cell lymphoma expressed 3680 binding sites per cell with a Kd of 1.86 nM. Affinity cross-linking studies demonstrated that a major cell surface species of 120 kDa bound to 4-1BB-AP; 4-1BB-AP also bound to a minor species of approximately 60 kDa. The addition of paraformaldehyde-fixed SF21 cells expressing recombinant 4-1BB synergized with F(ab')2 anti-mu in inducing splenic B cell proliferation suggesting that 4-1BB may function as a regulator of B cell growth.
Collapse
Affiliation(s)
- K E Pollok
- Indiana University School of Medicine, Indianapolis 46202
| | | | | | | | | | | |
Collapse
|
45
|
Zhou Z, Kim YJ, Pollok K, Hurtado J, Lee JK, Broxmeyer HE, Kwon BS. Macrophage inflammatory protein-1 alpha rapidly modulates its receptors and inhibits the anti-CD3 mAb-mediated proliferation of T lymphocytes. J Immunol 1993; 151:4333-41. [PMID: 8409405] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Macrophage inflammatory protein-1 alpha (MIP-1 alpha) is a member of the intercrine/chemokine family which consists of basic, heparin-binding, small molecular weight proteins. We have previously shown that a T cell line, CTLL-R8, carried high-affinity receptors for MIP-1 alpha and the proliferation of CTLL-R8 cells was inhibited by murine recombinant (mr) MIP-1 alpha. We extended our previous studies to murine resting splenic T lymphocytes to determine whether the inhibition of T cell proliferation is a general property of MIP-1 alpha. The resting splenic T cells carried approximately 680 high-affinity binding sites for mrMIP-1 alpha; more than 90% of the primary T cells carried MIP-1 alpha receptors. When the T cells were stimulated with immobilized anti-CD3 mAb in the presence of accessory cells, the MIP-1 alpha binding was reduced. The lowest binding was obtained 2 h after anti-CD3 mAb stimulation due to the internalization of MIP-1 alpha receptors. mrMIP-1 alpha inhibited the anti-CD3 mAb-mediated proliferation of murine splenic T lymphocytes. The maximum inhibition was obtained when mrMIP-1 alpha was added 30 min before anti-CD3 mAb stimulation. Slight inhibition of T cell proliferation was observed when mrMIP-1 alpha was added at the same time as anti-CD3 mAb stimulation. These results indicate that T lymphocytes are regulated negatively by MIP-1 alpha, which occurs when the T cells are exposed to MIP-1 alpha before activation. The negative effect of MIP-1 alpha seems to be mediated in part by the inhibition of IL-2 production, for there was a reduction in both the IL-2 mRNA levels and the IL-2 activity in supernatants from T cells preincubated with MIP-1 alpha before anti-CD3 mAb stimulation.
Collapse
Affiliation(s)
- Z Zhou
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | | | | | | | | | | | | |
Collapse
|
46
|
Zhou Z, Kim YJ, Pollok K, Hurtado J, Lee JK, Broxmeyer HE, Kwon BS. Macrophage inflammatory protein-1 alpha rapidly modulates its receptors and inhibits the anti-CD3 mAb-mediated proliferation of T lymphocytes. The Journal of Immunology 1993. [DOI: 10.4049/jimmunol.151.8.4333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
Macrophage inflammatory protein-1 alpha (MIP-1 alpha) is a member of the intercrine/chemokine family which consists of basic, heparin-binding, small molecular weight proteins. We have previously shown that a T cell line, CTLL-R8, carried high-affinity receptors for MIP-1 alpha and the proliferation of CTLL-R8 cells was inhibited by murine recombinant (mr) MIP-1 alpha. We extended our previous studies to murine resting splenic T lymphocytes to determine whether the inhibition of T cell proliferation is a general property of MIP-1 alpha. The resting splenic T cells carried approximately 680 high-affinity binding sites for mrMIP-1 alpha; more than 90% of the primary T cells carried MIP-1 alpha receptors. When the T cells were stimulated with immobilized anti-CD3 mAb in the presence of accessory cells, the MIP-1 alpha binding was reduced. The lowest binding was obtained 2 h after anti-CD3 mAb stimulation due to the internalization of MIP-1 alpha receptors. mrMIP-1 alpha inhibited the anti-CD3 mAb-mediated proliferation of murine splenic T lymphocytes. The maximum inhibition was obtained when mrMIP-1 alpha was added 30 min before anti-CD3 mAb stimulation. Slight inhibition of T cell proliferation was observed when mrMIP-1 alpha was added at the same time as anti-CD3 mAb stimulation. These results indicate that T lymphocytes are regulated negatively by MIP-1 alpha, which occurs when the T cells are exposed to MIP-1 alpha before activation. The negative effect of MIP-1 alpha seems to be mediated in part by the inhibition of IL-2 production, for there was a reduction in both the IL-2 mRNA levels and the IL-2 activity in supernatants from T cells preincubated with MIP-1 alpha before anti-CD3 mAb stimulation.
Collapse
Affiliation(s)
- Z Zhou
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | - Y J Kim
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | - K Pollok
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | - J Hurtado
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | - J K Lee
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | - H E Broxmeyer
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | - B S Kwon
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| |
Collapse
|
47
|
Kim YJ, Zhou Z, Hurtado J, Wood DL, Choi AS, Pescovitz MD, Warfel KA, Vandagriff J, Davis JK, Kwon BS. IDDM patients' sera recognize a novel 30-kD pancreatic autoantigen related to chymotrypsinogen. Immunol Invest 1993; 22:219-27. [PMID: 8509158 DOI: 10.3109/08820139309063404] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We have examined, by western immunoblot analysis, the sera of 16 insulin-dependent diabetes mellitus patients (IDDM) for the presence of autoantibodies against proteins extracted from islet-cell enriched preparations of normal human pancreata. A novel putative autoantigen recognized by late stage IDDM patients sera was identified, and its amino acid sequence was partially determined. Islets of Langerhans were partially purified by a modified collagenase digestion procedure, and subsequent protein extracts were fractionated by one-dimensional or two-dimensional polyacrylamide gel electrophoresis (1-D or 2-D SDS-PAGE). Immunoblot analysis revealed a 30-kD species which was recognized by 4 of 16 IDDM patients sera, but none of 16 normal sera. The 30-kD protein, appeared as a single band on 1-D SDS-PAGE, but was resolved on 2-D gel electrophoresis as several distinct protein species with different isoelectric points (pI's), ranging from 7 to 9. The amino terminal sequence of one such species was partially determined by microsequencing, and the second through the fourteenth amino acids were found to be identical to the corresponding sequence in human chymotrypsinogen. The fifteenth through the eighteenth amino acids were different from the known chymotrypsinogen sequence. This region corresponds with the site that is cleaved to activate chymotrypsinogen. Based on the size and sequence homology, this antigen appears to be related to chymotrypsinogen. We conclude that this 30-kD species may be an autoantigen in some late stage IDDM patients.
Collapse
Affiliation(s)
- Y J Kim
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202-5120
| | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Pollok KE, Kim YJ, Zhou Z, Hurtado J, Kim KK, Pickard RT, Kwon BS. Inducible T cell antigen 4-1BB. Analysis of expression and function. The Journal of Immunology 1993. [DOI: 10.4049/jimmunol.150.3.771] [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: 01/02/2023]
Abstract
Abstract
4-1BB is an inducible receptor-like protein expressed in both cytolytic and Th cells. Optimal induction of 4-1BB mRNA in T cells required both PMA and ionomycin stimulation, indicating that protein kinase C activation and increases in intracellular Ca2+ were required for its expression. 4-1BB was categorized as an early activation gene since the protein synthesis inhibitor, cycloheximide, blocked the induction of 4-1BB mRNA. A rat mAb, 53A2, was generated against recombinant soluble 4-1BB and was used to characterize this molecule. 4-1BB is a 30-kDa glycoprotein and appears to exist as both a monomer and a 55-kDa dimer on the cell surface of a T cell clone. The 4-1BB protein may be post-translationally modified since its predicted backbone is 25 kDa. FACS analysis indicated that 4-1BB was inducible and expressed on the cell surface of activated splenic T cells and thymocytes. Cross-linking of 4-1BB on anti-CD3-stimulated T cells with 53A2 resulted in a dramatic enhancement of T cell proliferation. This suggests that 4-1BB may function as an accessory signaling molecule during T cell activation.
Collapse
Affiliation(s)
- K E Pollok
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | - Y J Kim
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | - Z Zhou
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | - J Hurtado
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | - K K Kim
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | - R T Pickard
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | - B S Kwon
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| |
Collapse
|
49
|
Pollok KE, Kim YJ, Zhou Z, Hurtado J, Kim KK, Pickard RT, Kwon BS. Inducible T cell antigen 4-1BB. Analysis of expression and function. J Immunol 1993; 150:771-81. [PMID: 7678621] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
4-1BB is an inducible receptor-like protein expressed in both cytolytic and Th cells. Optimal induction of 4-1BB mRNA in T cells required both PMA and ionomycin stimulation, indicating that protein kinase C activation and increases in intracellular Ca2+ were required for its expression. 4-1BB was categorized as an early activation gene since the protein synthesis inhibitor, cycloheximide, blocked the induction of 4-1BB mRNA. A rat mAb, 53A2, was generated against recombinant soluble 4-1BB and was used to characterize this molecule. 4-1BB is a 30-kDa glycoprotein and appears to exist as both a monomer and a 55-kDa dimer on the cell surface of a T cell clone. The 4-1BB protein may be post-translationally modified since its predicted backbone is 25 kDa. FACS analysis indicated that 4-1BB was inducible and expressed on the cell surface of activated splenic T cells and thymocytes. Cross-linking of 4-1BB on anti-CD3-stimulated T cells with 53A2 resulted in a dramatic enhancement of T cell proliferation. This suggests that 4-1BB may function as an accessory signaling molecule during T cell activation.
Collapse
MESH Headings
- Amino Acid Sequence
- Animals
- Antibodies, Monoclonal/immunology
- Antigens, CD/physiology
- Antigens, Differentiation, B-Lymphocyte/physiology
- Base Sequence
- CD40 Antigens
- Female
- Immune Sera/immunology
- Lymphocyte Activation
- Mice
- Mice, Inbred BALB C
- Molecular Sequence Data
- Receptors, Antigen, T-Cell/analysis
- Receptors, Antigen, T-Cell/immunology
- Receptors, Antigen, T-Cell/physiology
- T-Lymphocytes/immunology
Collapse
Affiliation(s)
- K E Pollok
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis 46202
| | | | | | | | | | | | | |
Collapse
|
50
|
Durán L, Hurtado J, Sante L, Timoneda FL. [Accidental subdural block during epidural anesthesia]. Rev Esp Anestesiol Reanim 1993; 40:41-42. [PMID: 8465081] [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: 05/22/2023]
|