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Probst V, Rankin DA, Haddadin Z, Hamdan L, Rahman HK, Yanis A, Talj R, Spieker AJ, Howard L, Stewart LS, Guevara C, Yepsen E, Faouri S, Shehabi A, Williams JV, Chappell J, Khuri-Bulos N, Halasa NB. Adenovirus Infection in Hospitalized Children with Acute Respiratory Infection in Jordan. Pediatr Infect Dis J 2022; 41:277-283. [PMID: 35315822 PMCID: PMC8943843 DOI: 10.1097/inf.0000000000003423] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND The most common clinical manifestation of adenovirus (AdV) infection is acute respiratory illness (ARI). Specific AdV species associated with ARI hospitalizations are not well defined in the Middle East. METHODS A viral surveillance study was conducted among children <2 years hospitalized in Amman, Jordan, from March 2010 to March 2013. Nasal and throat respiratory specimens were obtained from enrolled children and tested for viruses using a real-time reverse-transcription quantitative polymerase chain reaction. AdV-positive specimens were typed by partial hexon gene sequencing. Demographic and clinical features were compared between AdV detected as single pathogen versus co-detected with other respiratory viruses, and between AdV-B and AdV-C species. RESULTS AdV was detected in 475/3168 (15%) children hospitalized with ARI; of these, 216 (45%) specimens were successfully typed with AdV-C as the most common species detected (140/216; 65%). Children with AdV-single detection (88/475; 19%) had a higher frequency of fever (71% vs. 56%; P=0.015), diarrhea (18% vs. 11%; p=0.048), and/or seizures/abnormal movements (14% vs. 5%; p=0.003). Children with AdV co-detected with other viruses more likely required oxygen support [adjusted odds ratio (aOR) 1.91 (95% CI: 1.08, 3.39), P = 0.027] than those with AdV-single detection. Children with AdV-C had higher odds of co-detections with other viruses compared with those with AdV-B [aOR 4.00 (95% CI: 1.91, 8.44), P < 0.001]. CONCLUSION Clinical differences were identified between AdV-single and AdV co-detected with other viruses, and between AdV-B and AdV-C. Larger studies with AdV typing are needed to determine additional epidemiological and clinical differences between specific AdV species and types.
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Affiliation(s)
- Varvara Probst
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN
| | - Danielle A. Rankin
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN
- Vanderbilt Epidemiology PhD Program, Vanderbilt University School of Medicine, Nashville, TN
| | - Zaid Haddadin
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN
| | - Lubna Hamdan
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN
| | - Herdi K. Rahman
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN
| | - Ahmad Yanis
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN
| | - Rana Talj
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN
| | - Andrew J. Spieker
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Leigh Howard
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN
| | - Laura S. Stewart
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN
| | - Claudia Guevara
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN
| | - Erin Yepsen
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN
| | - Samir Faouri
- Department of Pediatrics, Al Bashir Hospital, Amman, Jordan
| | - Asem Shehabi
- Department of Pediatrics, Jordan University, Amman, Jordan
| | - John V. Williams
- Department of Pediatrics, University of Pittsburgh School of Medicine, Children’s Hospital of Pittsburgh of University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - James Chappell
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN
| | | | - Natasha B. Halasa
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN
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2
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Guevara C, Matouk M. In-office 3D printed guide for rhinoplasty. Int J Oral Maxillofac Surg 2021; 50:1563-1565. [PMID: 34092452 DOI: 10.1016/j.ijom.2021.05.005] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/11/2021] [Accepted: 05/11/2021] [Indexed: 11/27/2022]
Abstract
Rhinoplasty is one of the most technically challenging aspects of facial cosmetic surgery. Various versions of predictive computer software have been developed to aid the surgeon in obtaining predictable results. In the rapidly progressing era of three-dimensional (3D) printing, we present an intraoperative technique that has enabled us to reliably monitor planned surgical changes to the nasal form.
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Affiliation(s)
- C Guevara
- South Florida Dental Implant and Facial Surgery Center, Fort Lauderdale, FL, USA.
| | - M Matouk
- South Florida Dental Implant and Facial Surgery Center, Fort Lauderdale, FL, USA
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3
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Crawford D, Kim S, Guevara C. Abstract No. 148 Does transcervical retrograde thoracic duct access improve clinical outcomes of thoracic duct embolization for patients with chyle leak? J Vasc Interv Radiol 2021. [DOI: 10.1016/j.jvir.2021.03.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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4
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Probst V, Datyner EK, Haddadin Z, Rankin DA, Hamdan L, Rahman HK, Spieker A, Stewart LS, Guevara C, Yepsen E, Schmitz JE, Halasa NB. Human adenovirus species in children with acute respiratory illnesses. J Clin Virol 2021; 134:104716. [PMID: 33360858 PMCID: PMC8324062 DOI: 10.1016/j.jcv.2020.104716] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/21/2020] [Accepted: 12/06/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Human adenovirus (HAdV) species B, C, and E are commonly associated with acute respiratory illnesses (ARI). We sought to determine the association between HAdV species and ARI severity in children over one respiratory season at Monroe Carell Jr. Children's Hospital at Vanderbilt. METHODS We conducted a retrospective cohort study of children with HAdV from a provider-ordered BioFire® FilmArray Respiratory Pathogen Panel 2.0 (RPP) from 05/2018-06/2019. Type-specific PCR assays for HAdV-B3, B7, B11, B14, B16, B21, HAdV-C1, C2, C5, C6, and HAdV-E4 were performed. Demographics, clinical characteristics, and outcome data were compared between HAdV species. RESULTS Of 4514 respiratory specimens collected, 2644 (59 %) had at least one pathogen detected by RPP, and 384 (15 %) were HAdV-positive; 342 (89 %) were available for research testing with 306 (89 %) specimens from unique symptomatic individuals; 237 (77 %) were positive for the following species: 104 (44 %) HAdV-B, 114 (48 %) HAdV-C, 9 (4%) HAdV-E, and 10 (4%) with co-detection between species. The majority with identified HAdV species were seen in the ED (62 %), and approximately one-third were hospitalized. Patients with HAdV-C were more likely to be younger, hospitalized, and have a higher frequency of seizures compared to HAdV-B. CONCLUSION HAdV-C and HAdV-B were the most common species detected, with differences in clinical characteristics and outcomes noted. Additional studies with larger sample sizes focusing on a high-risk pediatric population are necessary to determine if differences in illness severity across individual HAdV types exist to guide further type-specific HAdV vaccine development.
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Affiliation(s)
- Varvara Probst
- Departments of Pediatrics, Vanderbilt University Medical Center, 1161 21st Ave. South, Nashville, TN, 37232, USA.
| | - Emily K Datyner
- Departments of Pediatrics, Vanderbilt University Medical Center, 1161 21st Ave. South, Nashville, TN, 37232, USA
| | - Zaid Haddadin
- Departments of Pediatrics, Vanderbilt University Medical Center, 1161 21st Ave. South, Nashville, TN, 37232, USA
| | - Danielle A Rankin
- Departments of Pediatrics, Vanderbilt University Medical Center, 1161 21st Ave. South, Nashville, TN, 37232, USA; Vanderbilt Epidemiology PhD Program, Vanderbilt University School of Medicine, 1161 21st Ave S, Nashville, TN, 37232, USA
| | - Lubna Hamdan
- Departments of Pediatrics, Vanderbilt University Medical Center, 1161 21st Ave. South, Nashville, TN, 37232, USA
| | - Herdi K Rahman
- Departments of Pediatrics, Vanderbilt University Medical Center, 1161 21st Ave. South, Nashville, TN, 37232, USA
| | - Andrew Spieker
- Department of Biostatistics, Vanderbilt University Medical Center, 2525 West End Ave #1100, Nashville, TN, 37203, USA
| | - Laura S Stewart
- Departments of Pediatrics, Vanderbilt University Medical Center, 1161 21st Ave. South, Nashville, TN, 37232, USA
| | - Claudia Guevara
- Departments of Pediatrics, Vanderbilt University Medical Center, 1161 21st Ave. South, Nashville, TN, 37232, USA
| | - Erin Yepsen
- Departments of Pediatrics, Vanderbilt University Medical Center, 1161 21st Ave. South, Nashville, TN, 37232, USA
| | - Jonathan E Schmitz
- Departments of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN, 37232, USA
| | - Natasha B Halasa
- Departments of Pediatrics, Vanderbilt University Medical Center, 1161 21st Ave. South, Nashville, TN, 37232, USA
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5
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Shull JG, Pay MT, Lara Compte C, Olid M, Bermudo G, Portillo K, Sellarés J, Balcells E, Vicens-Zygmunt V, Planas-Cerezales L, Badenes-Bonet D, Blavia R, Rivera-Ortega P, Moreno A, Sans J, Perich D, Barril S, Esteban L, Garcia-Bellmunt L, Esplugas J, Suarez-Cuartin G, Bordas-Martinez J, Castillo D, Jolis R, Salvador I, Eizaguirre Anton S, Villar A, Robles-Perez A, Cardona MJ, Barbeta E, Silveira MG, Guevara C, Dorca J, Rosell A, Luburich P, Llatjós R, Jorba O, Molina-Molina M. Mapping IPF helps identify geographic regions at higher risk for disease development and potential triggers. Respirology 2020; 26:352-359. [PMID: 33167075 DOI: 10.1111/resp.13973] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 02/25/2020] [Revised: 09/30/2020] [Accepted: 10/20/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND OBJECTIVE The relationship between IPF development and environmental factors has not been completely elucidated. Analysing geographic regions of idiopathic pulmonary fibrosis (IPF) cases could help identify those areas with higher aggregation and investigate potential triggers. We hypothesize that cross-analysing location of IPF cases and areas of consistently high air pollution concentration could lead to recognition of environmental risk factors for IPF development. METHODS This retrospective study analysed epidemiological and clinical data from 503 patients registered in the Observatory IPF.cat from January 2017 to June 2019. Incident and prevalent IPF cases from the Catalan region of Spain were graphed based on their postal address. We generated maps of the most relevant air pollutant PM2.5 from the last 10 years using data from the CALIOPE air quality forecast system and observational data. RESULTS In 2018, the prevalence of IPF differed across provinces; from 8.1 cases per 100 000 habitants in Barcelona to 2.0 cases per 100 000 in Girona. The ratio of IPF was higher in some areas. Mapping PM2.5 levels illustrated that certain areas with more industry, traffic and shipping maintained markedly higher PM2.5 concentrations. Most of these locations correlated with higher aggregation of IPF cases. Compared with other risk factors, PM2.5 exposure was the most frequent. CONCLUSION In this retrospective study, prevalence of IPF is higher in areas of elevated PM2.5 concentration. Prospective studies with targeted pollution mapping need to be done in specific geographies to compile a broader profile of environmental factors involved in the development of pulmonary fibrosis.
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Affiliation(s)
- Jessica Germaine Shull
- ILD Multidisciplinary Unit, Bellvitge University Hospital, IDIBELL, Hospitalet de Llobregat, Spain
| | - Maria Teresa Pay
- Barcelona Supercomputing Center, BSC, c/Jordi Girona, 29,, Barcelona, Spain
| | - Carla Lara Compte
- ILD Multidisciplinary Unit, Bellvitge University Hospital, IDIBELL, Hospitalet de Llobregat, Spain
| | - Miriam Olid
- Barcelona Supercomputing Center, BSC, c/Jordi Girona, 29,, Barcelona, Spain
| | - Guadalupe Bermudo
- ILD Multidisciplinary Unit, Bellvitge University Hospital, IDIBELL, Hospitalet de Llobregat, Spain
| | - Karina Portillo
- ILD Multidisciplinary Unit, University Hospital Trias i Pujol, Badalona, Spain
| | - Jacobo Sellarés
- ILD Multidisciplinary Unit, Hospital Clínic of Barcelona, IDIBAPS, Barcelona, Spain
| | - Eva Balcells
- Respiratory Medicine Department, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Hospital del Mar, Barcelona, Spain
| | - Vanesa Vicens-Zygmunt
- ILD Multidisciplinary Unit, Bellvitge University Hospital, IDIBELL, Hospitalet de Llobregat, Spain
| | - Lurdes Planas-Cerezales
- ILD Multidisciplinary Unit, Bellvitge University Hospital, IDIBELL, Hospitalet de Llobregat, Spain
| | - Diana Badenes-Bonet
- Respiratory Medicine Department, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Hospital del Mar, Barcelona, Spain.,School of Health & Life Sciences, Pompeu Fabra University (UPF), Barcelona, Spain.,CIBER Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Rosana Blavia
- Respiratory Department, Hospital Moises Broggi, San Joan Despi, Spain
| | - Pilar Rivera-Ortega
- ILD Multidisciplinary Unit, Bellvitge University Hospital, IDIBELL, Hospitalet de Llobregat, Spain
| | - Amalia Moreno
- Respiratory Department, Hospital Parc Taulí, Sabadell, Spain
| | - Jordi Sans
- Respiratory Department, Consorci Sanitari de Terrassa, Terrassa, Spain
| | - Damià Perich
- Respiratory Department, Consorci Sanitari de Terrassa, Terrassa, Spain
| | - Silvia Barril
- Respiratory Department, Hospital Arnau de Vilanova, Lleida, Spain
| | | | | | - Jordi Esplugas
- Respiratory Department, Hospital de Martorell, Barcelonès, Spain
| | - Guillermo Suarez-Cuartin
- ILD Multidisciplinary Unit, Bellvitge University Hospital, IDIBELL, Hospitalet de Llobregat, Spain
| | - Jaume Bordas-Martinez
- ILD Multidisciplinary Unit, Bellvitge University Hospital, IDIBELL, Hospitalet de Llobregat, Spain
| | - Diego Castillo
- ILD Multidisciplinary Unit, Hospital Sant Pau i Santa Creu, Barcelona, Spain
| | - Rosa Jolis
- Respiratory Department, Hospital de Figueres, Figueres, Spain
| | - Inma Salvador
- Respiratory Department, Hospital de Tortosa, Tortosa, Spain
| | | | - Ana Villar
- ILD Multidisciplinary Unit, Hospital Vall d'Hebron, Barcelona, Spain
| | | | | | - Enric Barbeta
- Respiratory Department, Hospital de Granollers, Granollers, Spain
| | | | - Claudia Guevara
- Respiratory Department, Hospital Sant Camil, Vilanova, Spain
| | - Jordi Dorca
- ILD Multidisciplinary Unit, Bellvitge University Hospital, IDIBELL, Hospitalet de Llobregat, Spain
| | - Antoni Rosell
- ILD Multidisciplinary Unit, University Hospital Trias i Pujol, Badalona, Spain.,CIBER Enfermedades Respiratorias (CIBERES), Madrid, Spain.,Translational Respiratory Research Group, Institut de Recerca Germans Trias i Pujol (IGTP), Badalona, Spain
| | - Patricio Luburich
- ILD Multidisciplinary Unit, Bellvitge University Hospital, IDIBELL, Hospitalet de Llobregat, Spain
| | - Roger Llatjós
- ILD Multidisciplinary Unit, Bellvitge University Hospital, IDIBELL, Hospitalet de Llobregat, Spain
| | - Oriol Jorba
- Barcelona Supercomputing Center, BSC, c/Jordi Girona, 29,, Barcelona, Spain
| | - Maria Molina-Molina
- ILD Multidisciplinary Unit, Bellvitge University Hospital, IDIBELL, Hospitalet de Llobregat, Spain.,CIBER Enfermedades Respiratorias (CIBERES), Madrid, Spain
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Báez-Becerra CT, Valencia-Rincón E, Velásquez-Méndez K, Ramírez-Suárez NJ, Guevara C, Sandoval-Hernandez A, Arboleda-Bustos CE, Olivos-Cisneros L, Gutiérrez-Ospina G, Arboleda H, Arboleda G. Nucleolar disruption, activation of P53 and premature senescence in POLR3A-mutated Wiedemann-Rautenstrauch syndrome fibroblasts. Mech Ageing Dev 2020; 192:111360. [PMID: 32976914 DOI: 10.1016/j.mad.2020.111360] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 09/15/2020] [Accepted: 09/17/2020] [Indexed: 01/01/2023]
Abstract
Recently, mutations in the RNA polymerase III subunit A (POLR3A) have been described as the cause of the neonatal progeria or Wiedemann-Rautenstrauch syndrome (WRS). POLR3A has important roles in transcription regulation of small RNAs, including tRNA, 5S rRNA, and 7SK rRNA. We aim to describe the cellular and molecular features of WRS fibroblasts. Cultures of primary fibroblasts from one WRS patient [monoallelic POLR3A variant c.3772_3773delCT (p.Leu1258Glyfs*12)] and one control patient were cultured in vitro. The mutation caused a decrease in the expression of wildtype POLR3A mRNA and POLR3A protein and a sharp increase in mutant protein expression. In addition, there was an increase in the nuclear localization of the mutant protein. These changes were associated with an increase in the number and area of nucleoli and to a high increase in the expression of pP53 and pH2AX. All these changes were associated with premature senescence. The present observations add to our understanding of the differences between Hutchinson-Gilford progeria syndrome and WRS and opens new alternatives to study cell senesce and human aging.
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Affiliation(s)
- Cindy Tatiana Báez-Becerra
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Estefania Valencia-Rincón
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Karen Velásquez-Méndez
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Nelson J Ramírez-Suárez
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Claudia Guevara
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Adrian Sandoval-Hernandez
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Carlos E Arboleda-Bustos
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Leonora Olivos-Cisneros
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico
| | - Gabriel Gutiérrez-Ospina
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico
| | - Humberto Arboleda
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Pediatría, Facultad de Medicina, Universidad Nacional de Colombia Bogotá, Colombia
| | - Gonzalo Arboleda
- Grupo de Neurociencias y Muerte Celular, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia; Departamento de Patología, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia.
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7
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Yomayusa González N, Low Padilla E, De La Hoz Siegler I, Chacón K, Acevedo Peña J, Barrero Garzón L, Barrera A, Tolosa N, Castillo A, Guevara Pulido F, Castelblanco D, Pinzón Florez C, Mendivelso Duarte F, Cantor Cruz F, Castillo Gutiérrez A, Gómez Gómez O, Ávila A, Guevara C, Álvarez Moreno C, Rojas Gambasica J, Arbeláez Duque CM, García Guarín B, Cárdenas Rodríguez M, Robayo Rodríguez S, Torres Castro M. Uso de resúmenes de evidencia para informar el tratamiento farmacológico de personas con sospecha o diagnóstico de infección respiratoria por SARS CoV-2 / COVID-19. Rev Colomb Nefrol 2020. [DOI: 10.22265/acnef.7.supl.2.407] [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: 11/27/2022] Open
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8
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Yomayusa González N, Low Padilla E, De La Hoz Siegler I, Chacón K, Acevedo Peña J, Barrero Garzón L, Barrera A, Tolosa N, Castillo A, Guevara Pulido F, Castelblanco D, Pinzón Florez C, Mendivelso Duarte F, Cantor Cruz F, Castillo Gutiérrez A, Gómez Gómez O, Ávila A, Guevara C, Álvarez Moreno C, Rojas Gambasica J, Arbeláez Duque CM, García Guarín B, Cárdenas Rodríguez M, Robayo Rodríguez S, Torres Castro M. Uso de resúmenes de evidencia para informar el tratamiento farmacológico de personas con sospecha o diagnóstico de infección respiratoria por SARS CoV-2 / COVID-19. Rev Colomb Nefrol 2020. [DOI: 10.22265/acnef.7.supl2.407] [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: 11/27/2022] Open
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9
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Breinbauer HA, Contreras MD, Lira JP, Guevara C, Castillo L, Ruëdlinger K, Muñoz D, Delano PH. Spatial Navigation Is Distinctively Impaired in Persistent Postural Perceptual Dizziness. Front Neurol 2020; 10:1361. [PMID: 31998220 PMCID: PMC6970195 DOI: 10.3389/fneur.2019.01361] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 12/10/2019] [Indexed: 11/24/2022] Open
Abstract
Objective: To determine whether performance in a virtual spatial navigational task is poorer in persistent postural perceptual dizziness (PPPD) patients than in healthy volunteers and patients suffering other vestibular disorders. Methods: Subjects were asked to perform three virtual Morris water maze spatial navigational tasks: (i) with a visible target, (ii) then with an invisible target and a fixed starting position, and finally (iii) with an invisible target and random initial position. Data were analyzed using the cumulative search error (CSE) index. Results: While all subjects performed equally well with a visible target, the patients with PPPD (n = 19) performed poorer (p < 0.004) in the invisible target/navigationally demanding tasks (CSE median of 8) than did the healthy controls (n = 18; CSE: 3) and vestibular controls (n = 19; CSE: 4). Navigational performance in the most challenging setting allowed us to discriminate PPPD patients from controls with an area under the receiver operating characteristic curve of 0.83 (sensitivity 78.1%; specificity 83.3%). PPPD patients manifested more chaotic and disorganized search strategies, with more dispersion in the navigational pool than those of the non-PPPD groups (standard distance deviation of 0.97 vs. 0.46 in vestibular controls and 0.20 in healthy controls; p < 0.001). Conclusions: While all patients suffering a vestibular disorder had poorer navigational abilities than healthy controls did, patients with PPPD showed the worst performance, to the point that this variable allowed the discrimination of PPPD from non-PPPD patients. This distinct impairment in spatial navigation abilities offers new insights into PPPD pathophysiology and may also represent a new biomarker for diagnosing this entity.
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Affiliation(s)
- Hayo A Breinbauer
- Department of Otolaryngology, Facultad de Medicina, Universidad de Chile, Santiago, Chile.,Department of Neurocience, Facultad de Medicina, Universidad de Chile, Santiago, Chile.,Department of Otolaryngology, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Maria Daniela Contreras
- Department of Otolaryngology, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Juan P Lira
- Department of Otolaryngology, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Claudia Guevara
- Department of Otolaryngology, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Leslie Castillo
- Department of Otolaryngology, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Katherine Ruëdlinger
- Department of Otolaryngology, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Daniel Muñoz
- Department of Otolaryngology, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Paul H Delano
- Department of Otolaryngology, Facultad de Medicina, Universidad de Chile, Santiago, Chile.,Department of Neurocience, Facultad de Medicina, Universidad de Chile, Santiago, Chile
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10
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Probst V, Speaker A, Stewart LS, Guevara C, Gerber SI, Rha B, Lively J, Lu X, Halasa NB. 237. Adenovirus Types in Children with Acute Respiratory Illnesses in Nashville Over Two Respiratory Seasons. Open Forum Infect Dis 2019. [PMCID: PMC6809822 DOI: 10.1093/ofid/ofz360.312] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Human adenovirus (HAdV) types 1–7, 11, 14, 16, and 21 within species B, C, and E are commonly associated with acute respiratory illnesses (ARI) in children. We sought to compare demographics, clinical characteristics, and outcomes of HAdV types with children who presented with fever and/or respiratory symptoms. Methods Children < 18 years with fever and/or ARI seen at Vanderbilt Children’s Hospital inpatient and emergency department settings from December of 2016 to October of 2018 were enrolled. Interviews and chart abstraction were conducted. Mid-turbinate nose and throat swab specimens were collected and tested by real-time RT-PCR for common respiratory viruses including HAdV. HAdV molecular typing was performed by type-specific real-time PCR assays for types 1–7, 11, 14, 16, and 21 targeting the hexon gene using published methods. Results Of 5111 ARI cases, 206 (4%) were HAdV-positive with a median age of 16 months (IQR 9–30); 57% male, 47% White, 40% Black, 33% Hispanic, 20% admitted, and 24% of hospitalized required oxygen support. Of the 206, 186 (90%) were able to be typed with more than one types detected in 13 (7%) cases. Distribution of HAdV types among single detections (n = 173) is shown in Figure 1; HAdV-1 and HAdV-2 were most common. Children with HAdV-2 were younger (median age 12 months vs. 15 months (HAdV-1) and 59 months (all other types), P < 0.001), and those with HAdV-1 were less likely to be male (44% vs. 65% for both HAdV-2 and other types, P = 0.029). Figure 2 displays HAdV detections over time, with winter and early spring peaks. Co-detection with other respiratory viruses occurred in 47% of cases; the most common among typable HAdV were rhinovirus/enterovirus in 30/186 (16%) and RSV in 19/186 (10%). Distribution among HAdV types is shown in Figure 3. Conclusion HAdV-1 and HAdV-2 were more prevalent than other HAdV types over two respiratory seasons in the Nashville area with peak cases in December-March. Children with HAdV-1 and HAdV-2 had some demographic differences. Further studies with a larger sample size for HAdV typing are needed in the pediatric population to determine whether additional clinically-relevant differences between HAdV types exist. ![]()
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Disclosures All authors: No reported disclosures.
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Affiliation(s)
| | - Andrew Speaker
- Vanderbilt University Medical Center, Nashville, Tennessee
| | | | | | - Susan I Gerber
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Brian Rha
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Joana Lively
- Division of Viral Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, Atlanta, Georgia
| | - Xiaoyan Lu
- Centers for Disease Control and Prevention, Atlanta, Georgia
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11
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Guevara C, Martinez M, Orellana P, Silva-Rosas C, Diaz V, De Gazia J, Garrido C. Serial decline of no evidence of disease activity-4 status in early disease stages of multiple sclerosis. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1220] [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: 11/15/2022]
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12
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Patel S, Pillai A, Guevara C, Celii F, Bhatti Z, Wang H. Abstract No. 467 A panel of mRNA molecules as prognostic biomarkers for patients with hepatocellular carcinoma. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.548] [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: 11/27/2022] Open
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13
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Guevara C, Baabor M. Deep brain stimulation for Parkinson disease with severe axial disability.A Case Report. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Liu K, Ramaswamy R, Guevara C, Kim S. 04:21 PM Abstract No. 402 Intranodal lymphangiography with thoracic duct embolization for chyle leak after head and neck surgeries. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.478] [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: 11/27/2022] Open
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Charalel R, Akinwande O, Picus D, Som A, Guevara C, Kavali P, Kim S, Giardina J, Darcy M, Ramaswamy R. 3:09 PM Abstract No. 283 Propensity-matched comparison of transjugular intrahepatic portosytemic shunt placement techniques: intravascular ultrasound versus fluoroscopic guidance. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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16
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McCabe J, Guevara C, Renfroe J, Fattahi T, Salman S, Steinberg B. Quantitative analysis of facial soft tissue perfusion during hypotensive anesthesia using laser-assisted indocyanine green fluorescence angiography. Int J Oral Maxillofac Surg 2017; 47:465-469. [PMID: 29089201 DOI: 10.1016/j.ijom.2017.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 08/24/2017] [Accepted: 10/05/2017] [Indexed: 11/20/2022]
Abstract
The aim of this study was to quantitatively evaluate the efficacy of induced hypotensive anesthesia in decreasing facial soft tissue perfusion during orthognathic surgery using laser-assisted indocyanine green fluorescence angiography. This retrospective study involved the evaluation of 16 patients who underwent orthognathic surgery. Data collection included facial tissue perfusion of the bilateral cheeks and chin at normotension and with pharmacologically induced hypotensive anesthesia. There were statistically significant differences in the facial tissue perfusion at normal and depressed levels of blood pressure (P<0.001). This study used an objective measure to demonstrate the long-standing belief that hypotensive anesthesia is efficacious in reducing tissue perfusion in the surgical field. The data suggest that pharmacologically depressing the level of mean arterial pressure by 18% may result in a 41-52% decrease in facial soft tissue perfusion. This study reports a novel method of quantitative analysis.
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Affiliation(s)
- J McCabe
- Department of Oral and Maxillofacial Surgery, University of Florida, Jacksonville, Florida, USA
| | - C Guevara
- Department of Oral and Maxillofacial Surgery, University of Florida, Jacksonville, Florida, USA
| | - J Renfroe
- Department of Oral and Maxillofacial Surgery, University of Florida, Jacksonville, Florida, USA
| | - T Fattahi
- Department of Oral and Maxillofacial Surgery, University of Florida, Jacksonville, Florida, USA
| | - S Salman
- Department of Oral and Maxillofacial Surgery, University of Florida, Jacksonville, Florida, USA
| | - B Steinberg
- Department of Oral and Maxillofacial Surgery, University of Florida, Jacksonville, Florida, USA.
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Mattie M, Raitano A, Morrison K, Morrison K, An Z, Capo L, Verlinsky A, Leavitt M, Ou J, Nadell R, Aviña H, Guevara C, Malik F, Moser R, Duniho S, Coleman J, Li Y, Pereira DS, Doñate F, Joseph IBJ, Challita-Eid P, Benjamin D, Stover DR. The Discovery and Preclinical Development of ASG-5ME, an Antibody-Drug Conjugate Targeting SLC44A4-Positive Epithelial Tumors Including Pancreatic and Prostate Cancer. Mol Cancer Ther 2016; 15:2679-2687. [PMID: 27550944 DOI: 10.1158/1535-7163.mct-16-0225] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 08/07/2016] [Indexed: 11/16/2022]
Abstract
Here, we report the development of an antibody-drug conjugate, ASG-5ME, which targets the solute carrier receptor SLC44A4. SLC44A4 is a member of a family of putative choline transporters that we show to be markedly upregulated in a variety of epithelial tumors, most notably prostate and pancreatic cancer. SLC44A4 is normally expressed on the apical surface of secretory epithelial cells, but in cancer we show expression is not restricted to the luminal surface in advanced and undifferentiated tumors. ASG-5ME consists of a human IgG2 anti-SLC44A4 antibody conjugated through a cleavable linker to the microtubule-disrupting agent monomethylauristatin E. It has potent antitumor activity in both cell line - and patient-derived xenograft models of pancreatic and prostate cancers. Combination studies with ASG-5ME and nab-paclitaxel demonstrated combination effect in both pancreatic and prostate tumor models. Altogether, the data presented here suggest that ASG-5ME may have the potential to offer a new therapeutic option for the treatment of pancreatic and prostate cancers. Mol Cancer Ther; 15(11); 2679-87. ©2016 AACR.
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Affiliation(s)
- Michael Mattie
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California.
| | - Arthur Raitano
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Kendall Morrison
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Karen Morrison
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Zili An
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Linnette Capo
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Alla Verlinsky
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Monica Leavitt
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Jimmy Ou
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Rossana Nadell
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Hector Aviña
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Claudia Guevara
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Faisal Malik
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Ruth Moser
- Seattle Genetics, Inc., Bothell, Washington
| | | | - Jeffrey Coleman
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Ying Li
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Daniel S Pereira
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Fernando Doñate
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Ingrid B J Joseph
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | - Pia Challita-Eid
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
| | | | - David R Stover
- Agensys Inc., an Affiliate of Astellas Pharma Inc., Santa Monica, California
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Guevara C, Wallender A, Steinberg B, Ranalli NJ. Primary delayed onset craniosynostosis in a child demonstrated by serial computed tomography imaging. Int J Oral Maxillofac Surg 2016; 45:1347-1350. [PMID: 27267708 DOI: 10.1016/j.ijom.2016.05.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 04/12/2016] [Accepted: 05/18/2016] [Indexed: 11/19/2022]
Abstract
Primary delayed onset craniosynostosis is a rarely reported phenomenon. The unique case of a 2-year-old boy who had computed tomography (CT) scans performed 20 months apart demonstrating the post-gestational development of sagittal suture craniosynostosis is presented. The otherwise healthy male initially presented to the emergency department at age 7 months with soft tissue swelling over his left parietal region secondary to a fall. A CT scan revealed a possible left parietal skull fracture without intracranial pathology and patent cranial sutures with a normocephalic calvarial configuration. Twenty months later, his paediatrician referred the boy to the craniofacial service for evaluation of progressive dolichocephaly. A new CT scan showed complete fusion of the sagittal suture with resultant biparietal narrowing, frontal bossing, and occipital prominence. The patient subsequently underwent uncomplicated frontoparietal craniotomy with calvarial vault reconstruction. Prior reports in the literature of cases of non-syndromic primary delayed onset craniosynostosis all lack 'pre-synostosis' CT imaging that proves post-birth patency of the cranial sutures. This case report documents CT demonstrating true primary delayed onset craniosynostosis.
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Affiliation(s)
- C Guevara
- Department of Oral and Maxillofacial Surgery, University of Florida, Jacksonville, FL, USA.
| | - A Wallender
- Department of Oral and Maxillofacial Surgery, University of Florida, Jacksonville, FL, USA
| | - B Steinberg
- Department of Oral and Maxillofacial Surgery, University of Florida, Jacksonville, FL, USA
| | - N J Ranalli
- Department of Oral and Maxillofacial Surgery, University of Florida, Jacksonville, FL, USA; Department of Neurosurgery, Division of Pediatric Neurosurgery, University of Florida, Jacksonville, FL, USA
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Ronald J, Ronald J, Davis B, Guevara C, Smith T, Kim C. Comparison of patency rates after angioplasty versus secondary stent deployment for treatment of in-stent restenoses of the central veins in hemodialysis patients. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.423] [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: 11/15/2022] Open
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20
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Mesick M, Belikoff B, Guevara C, Fowler K, Saad N. Bland embolization, chemoembolization, and Y-90 embolization of neuroendocrine metastases to the liver. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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21
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Guevara C, Zhang C, Gaddy JA, Iqbal J, Guerra J, Greenberg DP, Decker MD, Carbonetti N, Starner TD, McCray PB, Mooi FR, Gómez-Duarte OG. Highly differentiated human airway epithelial cells: a model to study host cell-parasite interactions in pertussis. Infect Dis (Lond) 2015; 48:177-88. [PMID: 26492208 DOI: 10.3109/23744235.2015.1100323] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Bordetella pertussis colonizes the human respiratory mucosa. Most studies on B. pertussis adherence have relied on cultured mammalian cells that lack key features present in differentiated human airway cells or on animal models that are not natural hosts of B. pertussis. The objectives of this work were to evaluate B. pertussis infection in highly differentiated human airway cells in vitro and to show the role of B. pertussis fimbriae in cell adherence. METHODS Primary human airway epithelial (PHAE) cells from human bronchi and a human bronchial epithelial (HBE) cell line were grown in vitro under air-liquid interface conditions. RESULTS PHAE and HBE cells infected with B. pertussis wild-type strain revealed bacterial adherence to the apical surface of cells, bacteria-induced cytoskeleton changes, and cell detachment. Mutations in the major fimbrial subunits Fim2/3 or in the minor fimbrial adhesin subunit FimD affected B. pertussis adherence to predominantly HBE cells. This cell model recapitulates the morphologic features of the human airway infected by B. pertussis and confirms the role of fimbriae in B. pertussis adherence. Furthermore, HBE cells show that fimbrial subunits, and specifically FimD adhesin, are critical in B. pertussis adherence to airway cells. CONCLUSIONS The relevance of this model to study host-parasite interaction in pertussis lies in the striking physiologic and morphologic similarity between the PHAE and HBE cells and the human airway ciliated and goblet cells in vivo. These cells can proliferate in vitro, differentiate, and express the same genetic profile as human respiratory cells in vivo.
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Affiliation(s)
- Claudia Guevara
- a Division of Pediatric Infectious Diseases , Vanderbilt University School of Medicine
| | - Chengxian Zhang
- a Division of Pediatric Infectious Diseases , Vanderbilt University School of Medicine
| | - Jennifer A Gaddy
- b Tennessee Valley Healthcare Systems , Department of Veterans Affairs.,c Division of Infectious Diseases , Vanderbilt University School of Medicine , Nashville , TN
| | - Junaid Iqbal
- a Division of Pediatric Infectious Diseases , Vanderbilt University School of Medicine
| | - Julio Guerra
- a Division of Pediatric Infectious Diseases , Vanderbilt University School of Medicine
| | - David P Greenberg
- d Department of Pediatrics , University of Pittsburgh School of Medicine , Pittsburgh , PA.,e Scientific and Medical Affairs , Sanofi Pasteur , Swiftwater , PA
| | - Michael D Decker
- e Scientific and Medical Affairs , Sanofi Pasteur , Swiftwater , PA.,f Department of Health Policy , Vanderbilt University School of Medicine , Nashville , TN
| | - Nicholas Carbonetti
- g Department of Biological and Biomedical Sciences, Department of Microbiology and Immunology , University of Maryland School of Medicine , Baltimore , MD
| | - Timothy D Starner
- h Stead Family Department of Pediatrics , University of Iowa Carver College of Medicine , Iowa City , IA
| | - Paul B McCray
- h Stead Family Department of Pediatrics , University of Iowa Carver College of Medicine , Iowa City , IA
| | - Frits R Mooi
- i National Institute for Public Health and the Environment, Center for Infectious Diseases Control , Bilthoven , The Netherlands
| | - Oscar G Gómez-Duarte
- a Division of Pediatric Infectious Diseases , Vanderbilt University School of Medicine
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Gonzalez G, Saad N, Kim S, Sheybani E, Darcy M, Guevara C. Sclerotherapy for extensive venous malformations of the hand. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Jagait H, Kim S, Guevara C. Transjugular intrahepatic portosystemic shunt (TIPS) versus balloon-occluded retrograde transvenous obliteration (BRTO) for the management of gastric varices: treatment algorithm according to imaging findings and clinical manifestations. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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24
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Gonzalez G, Tsai R, Guevara C, Kim S. Efficacy of transarterial chemoembolization (TACE) for hepatocellular carcinoma (HCC) in 31 patients with transjugular intrahepatic portosystemic shunts (TIPS). J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Pereira DS, Guevara C, Verlinsky A, Virata C, Ssucheng JH, An Z, Zhang C, Dinh N, Avina H, Do L, Karki S, Abad J, Yang P, Ou J, Morrison K, Moon SJ, Malik F, Jin L, Choi M, Wu C, Anand B, Cooper S, Joseph I, Jia XC, Morrison K, Challita-Eid P, Donate F, Kipps T, Dick J, Stover D. Abstract 2650: Ags67e, an anti-cd37 monomethyl auristatin e antibody (mmae) drug conjugate as a potential therapeutic for non-hodgkin's lymphoma, chronic lymphocytic leukemia and acute myeloid leukemia. Cancer Res 2014. [DOI: 10.1158/1538-7445.am2014-2650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
We have developed AGS67E, an antibody drug conjugate that targets CD37, a tetraspanin highly expressed on malignant B cells, for the potential treatment of non-Hodgkin's lymphoma (NHL), chronic lymphocytic leukemia (CLL) and acute myeloid leukemia (AML). AGS67E is a fully human anti-CD37 monoclonal IgG2 antibody conjugated to the potent microtubule-disrupting agent, MMAE, via reduced cysteines and the protease cleavable linker, maleimidocaproyl-valine-citrulline-p-aminobenzoyloxycarbonyl.
AGS67E exhibits potent in vitro binding, internalization and cytotoxicity on a variety of NHL, CLL and AML models and patient-derived samples, including CD34+CD38- leukemic stem cells. AGS67E also demonstrates potent anti-tumor responses, including complete tumor regressions in a variety of NHL, CLL and AML xenografts, including Rituxan refractory models and patient-derived samples. In general, CD37 was highly expressed across all models and a strong correlation was observed between the in vitro and in vivo efficacy of AGS67E.
To confirm binding of AGS67E in a variety of normal and patient-derived NHL, CLL and AML samples, we developed flow cytometry and immunohistochemistry (IHC) assays which have confirmed reported CD37 expression data in NHL & CLL. In normal hematopoietic cells, AGS67E bound strongly to B cells and to a much lesser extent to monocytes, T cells, neutrophils and NK cells. AGS67E also bound with high and similar affinity to cynomolgus monkey B cells and was equally cytotoxic to these and human B cells. In other normal tissues, AGS67E binding was only evident where lymphoid structures were apparent such as in the spleen and lymph node. With respect to CD37 expression in NHL, CLL and AML, AGS67E was found to bind to >80% of NHL and 100% of CLL and AML samples.
Taken together, our findings suggest that AGS67E may serve as a potential therapeutic for NHL, CLL and AML. To our knowledge, this body of work is also the first demonstration that CD37 is well expressed and potentially drug-able in AML.
Citation Format: Daniel S. Pereira, Claudia Guevara, Alla Verlinsky, Cyrus Virata, J Hsu Ssucheng, Zili An, Chungying Zhang, Nick Dinh, Hector Avina, Lisa Do, Sher Karki, Joseph Abad, Peng Yang, Jimmy Ou, Karen Morrison, Sing-Ju Moon, Faisal Malik, Liqing Jin, Michael Choi, Christina Wu, Banmeet Anand, Scott Cooper, Ingrid Joseph, Xiao-Chi Jia, Kendall Morrison, Pia Challita-Eid, Fernando Donate, Thomas Kipps, John Dick, David Stover. Ags67e, an anti-cd37 monomethyl auristatin e antibody (mmae) drug conjugate as a potential therapeutic for non-hodgkin's lymphoma, chronic lymphocytic leukemia and acute myeloid leukemia. [abstract]. In: Proceedings of the 105th Annual Meeting of the American Association for Cancer Research; 2014 Apr 5-9; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2014;74(19 Suppl):Abstract nr 2650. doi:10.1158/1538-7445.AM2014-2650
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Affiliation(s)
| | | | | | | | | | - Zili An
- 1Agensys, Inc, Santa Monica, CA
| | | | | | | | - Lisa Do
- 1Agensys, Inc, Santa Monica, CA
| | | | | | | | | | | | | | | | - Liqing Jin
- 2John Dick Lab, Toronto, Ontario, Canada
| | | | | | | | | | | | | | | | | | | | | | - John Dick
- 2John Dick Lab, Toronto, Ontario, Canada
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Guevara C, Miller M, Sopko D, Pabon-Ramos W, Smith T, Kim C. Abstract No. 101: Stenting of steno-occlusive disease of the central veins of the thorax in the setting of permanent hemodialysis access: comparison of stent-type and lesion-type. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Collins L, Goodwin J, Guevara C, Ferrell B, McSweeney J, Badgwell B. Patient Reasoning in Palliative Surgical Oncology. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Moor AE, Guevara C, Altermatt HJ, Warth R, Jaggi R, Aebi S. PRO_10--a new tissue-based prognostic multigene marker in patients with early estrogen receptor-positive breast cancer. Pathobiology 2011; 78:140-8. [PMID: 21613801 DOI: 10.1159/000323809] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Accepted: 12/22/2010] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND/AIMS Clinicopathological and molecular factors determine the prognosis of breast cancer. PRO_10 is a prognostic score based on quantitative RT-PCR of 10 proliferation-associated genes obtained from formalin-fixed, paraffin-embedded breast cancer tissues. We revalidated PRO_10 in patients treated in a non-trial setting. METHODS The charts of 315 patients with postmenopausal estrogen receptor (ER)-positive breast cancer between 1996 and 2004 were reviewed. Forty-eight cases relapsed within 5 years of diagnosis; they were paired with controls by matching the N and T stage, histological grade, percent ER-positive cells, human epidermal growth factor receptor 2, age, adjuvant chemo- and endocrine therapy. The score was tested by conditional logistic regression. RESULTS Despite strict matching, PRO_10 remained prognostic for recurrence in the whole group (odds ratio, OR = 4.7, p = 0.005) and in subgroups of grade 2 (OR = 5.5, p = 0.009) and N0 cancers (OR = 15, p = 0.002). Five-year recurrence-free survival was 29% in patients with high and 67% in patients with low scores (p = 0.002). PRO_10 was prognostic for overall survival (5-year overall survival 71 vs. 91%). CONCLUSION PRO_10 is an independent prognostic marker in postmenopausal ER-positive breast cancer. It is based on formalin-fixed, paraffin-embedded tissue and could be integrated easily into the routine diagnostic workflow.
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Affiliation(s)
- A E Moor
- Department of Clinical Research, University of Bern, Switzerland
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Kim C, Guevara C, Gage S, Lessne M, Icasiano D, Lawson J, Smith T. Abstract No. 227: Assessment of graft infection risk following covered stent deployment in polytetrafluoroethylene (PTFE) arteriovenous hemodialysis access. J Vasc Interv Radiol 2011. [DOI: 10.1016/j.jvir.2011.01.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Guevara C, Deasy N, Payan CA, Jarosz J, Agid Y, Leigh PN, Ludolph A, Kempton MJ, Barker G, Bensimon G. PAW22 Does cortical atrophy take place after basal ganglia damage in multiple system atrophy and progressive supranuclear palsy? Journal of Neurology, Neurosurgery & Psychiatry 2010. [DOI: 10.1136/jnnp.2010.226340.51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Quintero A, Cuero R, García S, Guevara P, Rincón C, Ospina C, Guevara C. A microbial biosensor device for iron detection under UV irradiation. ACTA ACUST UNITED AC 2007. [DOI: 10.1049/iet-stb:20070008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
Microorganisms isolated from diverse environmental sources were initially screened for carboxymethylcellulase activity. Nine strains that grew at elevated temperatures and which presented the highest activity were characterized further. Culture supernatants were assayed for potentiation of the enzymatic activity and, based on these results, consortia of four or nine microorganisms were tested for their capacity to grow on, and degrade a sugarcane leaf substrate. As predicted by the supernatant mixes, both consortia assayed were capable of degrading the cellulosic substrate provided. The group comprising of four strains was as efficient as the mix of all nine strains.
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Abstract
Ionizing radiation leads to rapid stabilization and activation of the p53 tumor suppressor. Previous reports demonstrate that murine p19ARF cooperates with p53 in the cellular response to gamma irradiation. Here, we show that endogenous ARF sequentially interacts with p53 and MDM2 following irradiation of primary human and mouse embryonic fibroblasts. Shortly after irradiation, p14ARF binds p53 independently of MDM2. As nuclear pools of p53 decline, endogenous p14ARF co-immunoprecipitates with MDM2 and is localized within the nucleolus. Interestingly, p14ARF nucleolar localization during this response is abrogated in cells lacking functional p53. Taken together, our data suggest that human and murine ARF contribute to the mammalian DNA damage response.
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Affiliation(s)
- Shireen Khan
- Department of Discovery Research, DNAX Research Incorporated, Palo Alto, CA 94304, USA
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Korver W, Guevara C, Chen Y, Neuteboom S, Bookstein R, Tavtigian S, Lees E. The product of the candidate prostate cancer susceptibility gene ELAC2 interacts with the gamma-tubulin complex. Int J Cancer 2003; 104:283-8. [PMID: 12569551 DOI: 10.1002/ijc.10945] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
ELAC2 is a novel candidate cancer susceptibility gene located on chromosome 17p: Carriers of mutations in ELAC2 display a higher risk of developing prostate cancer. Overexpression of ELAC2 in tumor cells causes a delay in G2-M progression characterized by accumulation of cyclin B levels. Consistent with a function in mitosis, further biochemical analysis revealed that ELAC2 physically interacts with the gamma-tubulin complex. This is the first biologic insight into the function of this new putative cancer susceptibility gene, providing clues of how perturbation of ELAC2 might promote tumorigenesis through irregular cell division.
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Affiliation(s)
- Wouter Korver
- DNAX Research Institute, Department of Oncology, Palo Alto, CA 94304, USA
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Espinosa-Tanguma R, Guevara C, González J, Ortega F, Ramírez-Zacarías JL, Hernández AE, Mandeville P, Sánchez-Armass S. [Ca2+]i changes in guinea pig tracheal smooth muscle cells in culture: effects of Na+ and ouabain. J Physiol Biochem 2003; 59:25-33. [PMID: 12903902 DOI: 10.1007/bf03179865] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The objective of this work was to confirm that the contractile effects of ouabain and Na(+)-free solutions in guinea pig tracheal rings are associated with increments in the cytosolic free Ca2+ concentration ([Ca2+]i) in cultured tracheal smooth muscle (TSM) cells. Cultured cells were alpha-actin positive. Histamine (50 microM) and Na(+)-free solution elicited a transient increase in [Ca2+]i, while the responses to thapsigargin (1 microM) and ouabain (1 mM) were long lasting. However, carbachol (10, 200, and 500 mM) and high K(+)-solution produced no effect on [Ca2+]i, suggesting that cultured guinea pig TSM cells display a phenotype change but maintain some of the tracheal rings physiological properties. The transient rise in [Ca2+]i in response to the absence of extracellular Na+ and the effect of ouabain may indicate the participation of the Na(+)/Ca2+ exchanger (NCX) in the regulation of [Ca2+]i.
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Affiliation(s)
- R Espinosa-Tanguma
- Departamento de Fisiología y Farmacología, Facultad de Medicina de la Universidad Autónoma de San Luis Potosí, Av. V. Carranza 2405, San Luis Potosí, 78210, S.L.P., México
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García-Villarreal L, Martínez-Lagares F, Sierra A, Guevara C, Marrero JM, Jiménez E, Monescillo A, Hernández-Cabrero T, Alonso JM, Fuentes R. Transjugular intrahepatic portosystemic shunt versus endoscopic sclerotherapy for the prevention of variceal rebleeding after recent variceal hemorrhage. Hepatology 1999; 29:27-32. [PMID: 9862845 DOI: 10.1002/hep.510290125] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Variceal hemorrhage continues to be a major cause of morbidity and mortality in cirrhotic patients. Transjugular intrahepatic portosystemic shunt (TIPS) is gaining wide acceptance as a treatment for several complications of portal hypertension. The aim of the current randomized study was to compare the transjugular shunt and endoscopic sclerotherapy (ES) for the prevention of variceal rebleeding (VB) in cirrhotic patients. Forty-six consecutive cirrhotic patients with variceal bleeding were randomly allocated to receive either transjugular shunt (22 patients) or ES (24 patients) 24 hours after control of bleeding. VB (50% vs. 9%) and early (first 6 weeks) VB (33% vs. 5%) were significantly more frequent in sclerotherapy patients; the actuarial probability of being free of VB was higher in the shunt group (P <.002). Eight patients (33%) of the sclerotherapy group and 3 patients (15%) of the shunt group died; the actuarial probability of survival was higher for the shunted patients (P <.05); 6 patients in the sclerotherapy group and none in the shunt group died from VB (P <.05). No difference was found in the proportion of patients with clinically evident hepatic encephalopathy (HE). These results show that the transjugular shunt is more effective than sclerotherapy in the prevention of both early and long-term VB. Moreover, a significant improvement in survival was found in the shunt group.
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Affiliation(s)
- L García-Villarreal
- Service of Digestive Disorders, Hospital Insular Universitario, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria,
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Targarona E, Guevara C, Pros I, Bagur C, Novell F, Bordas J, Trias M. Gallstone migration to the pancreatic duct. An unusual finding in acute gallstone pancreatitis. Hepatogastroenterology 1992; 39:76-8. [PMID: 1568713] [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] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- E Targarona
- Department of Surgery, University of Barcelona, Spain
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Olm Font M, Guevara C, García-Pugés A, Navarro S. [Value of platelet count as an activity index in chronic inflammatory intestinal diseases]. Med Clin (Barc) 1988; 91:397. [PMID: 3216739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Abstract
Thirty-four patients with a probable clinical diagnosis of dysmyelopoietic syndrome (DMPS) were studied to assess the in vitro growth pattern of their hemopoietic progenitors, i.e. burst-forming unit erythroid (BFU-E) and colony-forming unit myeloid (CFU-C) progenitor cells. Twenty-one patients had DMPS confirmed by final diagnosis and were classified according to the French-American-British (FAB) recommendations. Our results indicate that the normal colony growth of hemopoietic progenitors in vitro excludes DMPS and other preleukemic conditions. In addition, within the DMPS group a low number of CFU-C (11 colonies or fewer) was a highly significant indicator for the development of acute leukemia. Analysis of the limited number of cytogenetic results in the DMPS patients did not reach statistical significance in relation to the development of acute leukemia.
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Affiliation(s)
- A Shihab-el-Deen
- Department of Pathology, Faculty of Medicine, Kuwait University, Safat
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Fernández H, Guevara C. [Genital mycoplasmas and N. gonorrhoeae in prostitutes (author's transl)]. Rev Med Chil 1980; 108:814-7. [PMID: 6784217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Chávez Contreras RM, Rodríguez Gómez D, Guevara C, Sánchez SE. [Biography of Miss Ma. Elena Maza Brito, nurse-instructor]. Rev Col Nac Enferm 1970; 7:3-11. [PMID: 5204289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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