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Espeche WG, Marin M, Romero C, Renna N, Vissani S, Blanco G, Pantalena SP, Cesario D, Diez E, Grasso C, Garzon E, Barochiner J, Ruise M, Minetto J, Mazzei N, Ramirez E, Rojas M, Carrera Ramos P, Gimenez MS, Rivarola M, Rada N, Deffacci A, Leiva Sisnieguez BC, Vissani J, Bercovsky R, Tenuta MA, Martinez C, Cerri G, Salazar R, Graziani L, Cornavaca T, Salazar MR. [Prevalence, knowledge and control of arterial hypertension in vulnerable neighborhoods of Argentina: A Cross-sectional Study]. Hipertens Riesgo Vasc 2024; 41:78-86. [PMID: 38418299 DOI: 10.1016/j.hipert.2024.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 10/24/2023] [Accepted: 02/04/2024] [Indexed: 03/01/2024]
Abstract
INTRODUCTION Hypertension (HTN) represents the primary individual risk factor, contributing significantly to the global burden of cardiovascular diseases (CVD). In our country, epidemiological research has highlighted substantial variations in the prevalence of these risk factors across different populations. However, there is a lack of epidemiological studies assessing exclusive cardiovascular risk factors within vulnerable neighborhoods characterized by extremely limited economic resources, sociocultural challenges, and inadequate healthcare access. METHODS A multicenter cross-sectional observational study was conducted among individuals residing in economically deprived and marginalized communities, including informal settlements and underprivileged neighborhoods. Simple random sampling of households was employed. Blood pressure measurements, anthropometric assessments, and epidemiological, economic, and sociocultural questionnaires were administered. Results encompass prevalence rates, awareness levels, and blood pressure control across diverse regions. Logistic regression was utilized to identify independent variables influencing primary outcomes. RESULTS A total of 989 participants were analyzed. The overall prevalence of hypertension was 48.2%. About 82% had a body mass index (BMI) >25. Approximately 45.3% had less than 6 years of formal education. Independent association was established between education levels below 6 years and higher hypertension prevalence. Among hypertensive individuals, 44% were unaware of their condition, with only 17.2% achieving control, correlated with having health insurance and a higher educational background. Merely 24% were receiving combined therapy. CONCLUSION The prevalence of hypertension within vulnerable neighborhoods is alarmingly high, surpassing rates in other social strata. Knowledge, treatment, and control levels of hypertension are suboptimal, comparable to other populations. Inadequate use of combination therapy was observed. This study underscores the urgent need for targeted interventions addressing cardiovascular risk factors in poor areas to mitigate the burden of CVD.
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Affiliation(s)
- W G Espeche
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Unidad de Enfermedades Cardiometabólicas, Hospital San Martín de La Plata, Buenos Aires, Argentina
| | - M Marin
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Sección de Hipertensión, Hospital Italiano de San Justo, Buenos Aires, Argentina
| | - C Romero
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; School of Medicine, Emory University School of Medicine, Atlanta, EE. UU
| | - N Renna
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Departamento de Cardiología, Hospital Español de Mendoza, Mendoza, Argentina
| | - S Vissani
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Centro de Especialidades Neurológicas y Rehabilitación (CENYR) San Luis, San Luis, Argentina
| | - G Blanco
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Consultorios, Instituto Médico Prometeo, Mar del Plata, Buenos Aires, Argentina
| | - S P Pantalena
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Servicio de Cardiología, Centro Modelo en Cardiología, San Miguel de Tucumán, Tucumán, Argentina
| | - D Cesario
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Servicio de Cardiología, Hospital Villa Constitución, Santa Fe, Argentina
| | - E Diez
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Instituto de Medicina y Biología Experimental de Cuyo - UNCuyo - CONICET, Mendoza, Argentina
| | - C Grasso
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina
| | - E Garzon
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Servicio de Cardiología, Hospital Privado de Córdoba, Córdoba, Argentina
| | - J Barochiner
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Sección de Hipertensión arterial, Hospital Italiano de Buenos Aires, CABA, Buenos Aires, Argentina
| | - M Ruise
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Servicio de Cardiología CCV, Clínica Yunes, Santiago del Estero, Argentina
| | - J Minetto
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Unidad de Enfermedades Cardiometabólicas, Hospital San Martín de La Plata, Buenos Aires, Argentina.
| | - N Mazzei
- Universidad Maimónides, Buenos Aires, Argentina
| | - E Ramirez
- Departamento de Cardiología, Hospital Español de Mendoza, Mendoza, Argentina
| | - M Rojas
- Centro de Especialidades Neurológicas y Rehabilitación (CENYR) San Luis, San Luis, Argentina
| | - P Carrera Ramos
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Unidad de Enfermedades Cardiometabólicas, Hospital San Martín de La Plata, Buenos Aires, Argentina
| | - M S Gimenez
- Departamento de Cardiología, Hospital Español de Mendoza, Mendoza, Argentina
| | - M Rivarola
- Consultorios, Instituto Médico Prometeo, Mar del Plata, Buenos Aires, Argentina
| | - N Rada
- Consultorios, Instituto Médico Prometeo, Mar del Plata, Buenos Aires, Argentina
| | - A Deffacci
- Núcleo de Innovación y Desarrollo de Oportunidades, Municipalidad de Mendoza, Mendoza, Argentina
| | - B C Leiva Sisnieguez
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Unidad de Enfermedades Cardiometabólicas, Hospital San Martín de La Plata, Buenos Aires, Argentina
| | - J Vissani
- Centro de Especialidades Neurológicas y Rehabilitación (CENYR) San Luis, San Luis, Argentina
| | - R Bercovsky
- Consultorios, Instituto Médico Prometeo, Mar del Plata, Buenos Aires, Argentina
| | - M A Tenuta
- Departamento de Cardiología, Hospital Español de Mendoza, Mendoza, Argentina
| | - C Martinez
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Unidad de Enfermedades Cardiometabólicas, Hospital San Martín de La Plata, Buenos Aires, Argentina
| | - G Cerri
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Unidad de Enfermedades Cardiometabólicas, Hospital San Martín de La Plata, Buenos Aires, Argentina
| | - R Salazar
- Departamento de Cardiología, Hospital Español de Mendoza, Mendoza, Argentina
| | - L Graziani
- Departamento de Cardiología, Hospital Español de Mendoza, Mendoza, Argentina
| | - T Cornavaca
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Servicio de Cardiología, Hospital Privado de Córdoba, Córdoba, Argentina
| | - M R Salazar
- Sociedad Argentina de Hipertensión Arterial, CABA, Argentina; Unidad de Enfermedades Cardiometabólicas, Hospital San Martín de La Plata, Buenos Aires, Argentina
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Espinosa MA, Ponce P, Molina A, Borja V, Torres MG, Rojas M. Advancements in Home-Based Devices for Detecting Obstructive Sleep Apnea: A Comprehensive Study. Sensors (Basel) 2023; 23:9512. [PMID: 38067885 PMCID: PMC10708697 DOI: 10.3390/s23239512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 11/24/2023] [Accepted: 11/25/2023] [Indexed: 12/18/2023]
Abstract
Obstructive Sleep Apnea (OSA) is a respiratory disorder characterized by frequent breathing pauses during sleep. The apnea-hypopnea index is a measure used to assess the severity of sleep apnea and the hourly rate of respiratory events. Despite numerous commercial devices available for apnea diagnosis and early detection, accessibility remains challenging for the general population, leading to lengthy wait times in sleep clinics. Consequently, research on monitoring and predicting OSA has surged. This comprehensive paper reviews devices, emphasizing distinctions among representative apnea devices and technologies for home detection of OSA. The collected articles are analyzed to present a clear discussion. Each article is evaluated according to diagnostic elements, the implemented automation level, and the derived level of evidence and quality rating. The findings indicate that the critical variables for monitoring sleep behavior include oxygen saturation (oximetry), body position, respiratory effort, and respiratory flow. Also, the prevalent trend is the development of level IV devices, measuring one or two signals and supported by prediction software. Noteworthy methods showcasing optimal results involve neural networks, deep learning, and regression modeling, achieving an accuracy of approximately 99%.
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Affiliation(s)
- Miguel A. Espinosa
- Institute of Advanced Materials for Sustainable Manufacturing, Tecnologico de Monterrey, Mexico City 14380, Mexico; (M.A.E.); (M.R.)
| | - Pedro Ponce
- Institute of Advanced Materials for Sustainable Manufacturing, Tecnologico de Monterrey, Mexico City 14380, Mexico; (M.A.E.); (M.R.)
| | - Arturo Molina
- Institute of Advanced Materials for Sustainable Manufacturing, Tecnologico de Monterrey, Mexico City 14380, Mexico; (M.A.E.); (M.R.)
| | - Vicente Borja
- Faculty of Engineering, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico;
| | - Martha G. Torres
- Sleep Medicine Unit, Instituto Nacional de Enfermedades Respiratorias Ismael Cosio Villegas, Mexico City 14080, Mexico;
| | - Mario Rojas
- Institute of Advanced Materials for Sustainable Manufacturing, Tecnologico de Monterrey, Mexico City 14380, Mexico; (M.A.E.); (M.R.)
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Lopez-Bernal D, Balderas D, Ponce P, Rojas M, Molina A. Implications of Artificial Intelligence Algorithms in the Diagnosis and Treatment of Motor Neuron Diseases-A Review. Life (Basel) 2023; 13:life13041031. [PMID: 37109560 PMCID: PMC10146231 DOI: 10.3390/life13041031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/17/2023] [Accepted: 03/29/2023] [Indexed: 04/29/2023] Open
Abstract
Motor neuron diseases (MNDs) are a group of chronic neurological disorders characterized by the progressive failure of the motor system. Currently, these disorders do not have a definitive treatment; therefore, it is of huge importance to propose new and more advanced diagnoses and treatment options for MNDs. Nowadays, artificial intelligence is being applied to solve several real-life problems in different areas, including healthcare. It has shown great potential to accelerate the understanding and management of many health disorders, including neurological ones. Therefore, the main objective of this work is to offer a review of the most important research that has been done on the application of artificial intelligence models for analyzing motor disorders. This review includes a general description of the most commonly used AI algorithms and their usage in MND diagnosis, prognosis, and treatment. Finally, we highlight the main issues that must be overcome to take full advantage of what AI can offer us when dealing with MNDs.
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Affiliation(s)
- Diego Lopez-Bernal
- Tecnologico de Monterrey, National Department of Research, Puente 222, Del. Tlalpan, Mexico City 14380, Mexico
| | - David Balderas
- Tecnologico de Monterrey, National Department of Research, Puente 222, Del. Tlalpan, Mexico City 14380, Mexico
| | - Pedro Ponce
- Tecnologico de Monterrey, National Department of Research, Puente 222, Del. Tlalpan, Mexico City 14380, Mexico
| | - Mario Rojas
- Tecnologico de Monterrey, National Department of Research, Puente 222, Del. Tlalpan, Mexico City 14380, Mexico
| | - Arturo Molina
- Tecnologico de Monterrey, National Department of Research, Puente 222, Del. Tlalpan, Mexico City 14380, Mexico
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4
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Rojas M, Ponce P, Molina A. Development of a Sensing Platform Based on Hands-Free Interfaces for Controlling Electronic Devices. Front Hum Neurosci 2022; 16:867377. [PMID: 35754778 PMCID: PMC9231433 DOI: 10.3389/fnhum.2022.867377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 05/04/2022] [Indexed: 11/13/2022] Open
Abstract
Hands-free interfaces are essential to people with limited mobility for interacting with biomedical or electronic devices. However, there are not enough sensing platforms that quickly tailor the interface to these users with disabilities. Thus, this article proposes to create a sensing platform that could be used by patients with mobility impairments to manipulate electronic devices, thereby their independence will be increased. Hence, a new sensing scheme is developed by using three hands-free signals as inputs: voice commands, head movements, and eye gestures. These signals are obtained by using non-invasive sensors: a microphone for the speech commands, an accelerometer to detect inertial head movements, and an infrared oculography to register eye gestures. These signals are processed and received as the user's commands by an output unit, which provides several communication ports for sending control signals to other devices. The interaction methods are intuitive and could extend boundaries for people with disabilities to manipulate local or remote digital systems. As a study case, two volunteers with severe disabilities used the sensing platform to steer a power wheelchair. Participants performed 15 common skills for wheelchair users and their capacities were evaluated according to a standard test. By using the head control they obtained 93.3 and 86.6%, respectively for volunteers A and B; meanwhile, by using the voice control they obtained 63.3 and 66.6%, respectively. These results show that the end-users achieved high performance by developing most of the skills by using the head movements interface. On the contrary, the users were not able to develop most of the skills by using voice control. These results showed valuable information for tailoring the sensing platform according to the end-user needs.
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Affiliation(s)
- Mario Rojas
- Tecnologico de Monterrey, School of Engineering and Sciences, Mexico City, Mexico
| | - Pedro Ponce
- Tecnologico de Monterrey, School of Engineering and Sciences, Mexico City, Mexico
| | - Arturo Molina
- Tecnologico de Monterrey, School of Engineering and Sciences, Mexico City, Mexico
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5
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Watane A, Cavuoto KM, Rojas M, Dermer H, Day JO, Banerjee S, Galor A. Fecal Microbial Transplant in Individuals With Immune-Mediated Dry Eye. Am J Ophthalmol 2022; 233:90-100. [PMID: 34214453 PMCID: PMC8678170 DOI: 10.1016/j.ajo.2021.06.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 04/06/2021] [Revised: 06/01/2021] [Accepted: 06/23/2021] [Indexed: 01/03/2023]
Abstract
PURPOSE To evaluate the safety of the Fecal Microbial Transplant for Sjogren Syndrome (FMT) trial in individuals with immune-mediated dry eye (DE). DESIGN Open-label, nonrandomized clinical trial. METHODS The study population included 10 individuals with DE symptoms and signs meeting criteria for Sjögren or positive early Sjögren markers. Procedures were 2 FMTs from a single healthy donor delivered via enema, 1 week apart. The primary outcome measure was safety. In addition, gut microbiome profiles, DE metrics, and T-cell profiles in blood were examined at baseline before FMT, and at 1 week, 1 month, and 3 months after FMT. RESULTS The mean age of the population was 60.4 years; 30% were male; 50% were white; and 50% were Hispanic. At baseline, all subjects had significantly different gut microbiome profiles from the donor, including higher mean diversity indices. Subjects had a decreased abundance of genera Faecalibacterium, Prevotella, and Ruminococcus and an increased abundance of genera Alistipes, Streptococcus, and Blautia compared to the donor. Effector and regulatory T-cell profiles were positively correlated with each other and with DE symptom severity (T helper 1 cells [Th1]; r = .76; P = .01; Th17: r = 0.83; P = .003; CD25: r = 0.66; P = .04; FoxP3: r = 0.68; P = .03). No adverse events were noted with FMT. After FMT, gut microbiome profiles in 8 subjects moved closer to the donor's profile. As a group, gut microbiome profiles at all follow-up time points were more similar to the original recipients' than the donor's microbiome; however, certain phyla, classes, and genera operational taxonomic unit (OTU) numbers remained closer to the donor vs recipients' baseline profiles out to 3 months. Five individuals subjectively reported improved dry eye symptoms 3 months after FMT. CONCLUSIONS FMT was safely performed in individuals with immune-mediated DE, with certain bacterial profiles resembling the donor out to 3 months after FMT. One-half the subjects reported improved DE symptoms. The most effective FMT administration method has yet to be determined.
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Affiliation(s)
- Arjun Watane
- Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL
| | - Kara M. Cavuoto
- Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL
| | - Mario Rojas
- Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL
| | - Harrison Dermer
- Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL
| | - Joanne O Day
- Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL
| | - Santanu Banerjee
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL
| | - Anat Galor
- Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL,Miami Veterans Administration Medical Center, 1201 NW 16th St, Miami, FL 33125
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6
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Sosa C, Rivas M, Mascareño P, Amarilla L, Ricardo A, Rojas M, Gonzalez J, Sosa P. Outcome of fetal microneurosurgery for intrauterine spina bifida repair in country with deficient healthcare system. Ultrasound Obstet Gynecol 2022; 59:120-122. [PMID: 34255893 DOI: 10.1002/uog.23738] [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] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/26/2021] [Accepted: 07/02/2021] [Indexed: 06/13/2023]
Affiliation(s)
- C Sosa
- Fundación Fetosur, Medicina Materno Fetal y Cirugía Fetal, Sanatorio Internacional, Ciudad del Este, Paraguay
- Unidad de Cirugía Experimental, Instituto Venezolano de Investigaciones Científicas, Altos de Pipe, Caracas, Venezuela
| | - M Rivas
- Departamento de Neurocirugía Pediátrica, Hospital de Clínicas, Facultad de Medicina, Universidad Nacional de Asunción, Asunción, Paraguay
| | - P Mascareño
- Fundación Fetosur, Medicina Materno Fetal y Cirugía Fetal, Sanatorio Internacional, Ciudad del Este, Paraguay
| | - L Amarilla
- Fundación Fetosur, Medicina Materno Fetal y Cirugía Fetal, Sanatorio Internacional, Ciudad del Este, Paraguay
| | - A Ricardo
- Fundación Fetosur, Medicina Materno Fetal y Cirugía Fetal, Sanatorio Internacional, Ciudad del Este, Paraguay
| | - M Rojas
- Fundación Fetosur, Medicina Materno Fetal y Cirugía Fetal, Sanatorio Internacional, Ciudad del Este, Paraguay
| | - J Gonzalez
- Departamento de Neurocirugía Pediátrica, Hospital de Clínicas, Facultad de Medicina, Universidad Nacional de Asunción, Asunción, Paraguay
| | - P Sosa
- Fundación Fetosur, Medicina Materno Fetal y Cirugía Fetal, Sanatorio Internacional, Ciudad del Este, Paraguay
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7
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Rodriguez Herrera A, Linares M, Rivas S, Contla I, Cafaggi D, Rojas M, Juarez J, Hernandez Gallegos A. Guillain barre syndrome and subsegmentary pulmonary embolism asociated to SARS-CoV-2 infection: Case report and review of current literature. J Neurol Sci 2021. [PMCID: PMC8498645 DOI: 10.1016/j.jns.2021.119924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Rincón-Arévalo H, Rojas M, Vanegas-García A, Muñoz-Vahos C, Orejuela-Erazo J, Vásquez G, Castaño D. Atypical phenotype and response of B cells in patients with seropositive rheumatoid arthritis. Clin Exp Immunol 2021; 204:221-238. [PMID: 33459349 DOI: 10.1111/cei.13576] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/21/2020] [Accepted: 01/07/2021] [Indexed: 01/02/2023] Open
Abstract
Patients with rheumatoid arthritis (RA) may be classified as seropositive or seronegative according to the presence of autoantibodies. An abnormal B cell phenotype and function could be one of the main components of the immunopathology of seropositive patients; however, there is little information regarding B cell defects in these patients. This study shows a broad characterization of the B cell phenotype and function in patients with seropositive RA. We focused mainly on the evaluation of subsets, the expression of modulatory molecules of cell activation (CD22, FcɣRIIb and FcµR), calcium mobilization, global tyrosine phosphorylation, expression of activation markers, cytokine and immunoglobulin (Ig) production, proliferation and the in-vitro generation of plasma cells. Increased frequency of CD27- IgM- IgD- and CD21- B cells was observed in patients with seropositive RA compared with healthy donors (HD). Decreased expression of CD22 was primarily found in memory B cells of patients with RA regardless of seropositivity. B cells from seropositive patients exhibited normal proliferation, calcium mobilization kinetics and global tyrosine phosphorylation, but showed an increased frequency of CD86+ B cells compared with HD. B cells of seropositive patients secrete less interleukin-10 after in-vitro activation and showed a decreased frequency of plasma cell differentiation and IgM production compared with HD. Our data indicate that patients with seropositive RA have an increased frequency of atypical B cell populations previously associated with chronic activation and antigen exposure. This may result in the observed low responsiveness of these cells in vitro.
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Affiliation(s)
- H Rincón-Arévalo
- Grupo de Inmunología Celular e Inmunogenética, Instituto de Investigaciones Médicas, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - M Rojas
- Grupo de Inmunología Celular e Inmunogenética, Instituto de Investigaciones Médicas, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia.,Unidad de Citometría, Facultad de Medicina, Sede de Investigación Universitaria, Universidad de Antioquia UdeA, Medellín, Colombia
| | - A Vanegas-García
- Unidad Reumatología, Hospital Universitario San Vicente Fundación, Medellín, Colombia
| | - C Muñoz-Vahos
- Unidad Reumatología, Hospital Universitario San Vicente Fundación, Medellín, Colombia
| | - J Orejuela-Erazo
- Grupo de Inmunología Celular e Inmunogenética, Instituto de Investigaciones Médicas, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - G Vásquez
- Grupo de Inmunología Celular e Inmunogenética, Instituto de Investigaciones Médicas, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - D Castaño
- Grupo de Inmunología Celular e Inmunogenética, Instituto de Investigaciones Médicas, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
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Calle M, Dawson L, Rojas M, Loetz E. 110 Pregnancy rate and embryo viability in response to chorionic gonadotrophins given for oestrus induction and gonadotrophin-releasing hormone 5 days after timed laparoscope-aided insemination of lactating and non-lactating goats. Reprod Fertil Dev 2021. [DOI: 10.1071/rdv33n2ab110] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Gonadotrophins are included in oestrous/ovulation synchronization (E/OS) regimens when breeding early in the transitional phase to promote follicular development. However, the time of use has been a matter of debate. Hence, the objective of this study was to determine whether equine and human chorionic gonadotrophins (eCG and hCG, respectively) given 24h before or 24h after concurrent removal of intravaginal progestagen (P4) and prostaglandin (PGF2α) delivery influences pregnancy rate (PR) and/or embryo viability (EV). Relatedly, the influence of gonadotrophin-releasing hormone (GnRH) 5 days post-breeding (dpb) on PR and/or EV was also considered. A prospective randomised control trial was conducted using lactating and non-lactating Alpine breed goats of different parity, average±s.e. age, and bodyweight (3.7±2.6), and (52.5±7), respectively. Goats were time-bred at 48h after P4 removal by laparoscopy (LAI; n=75) or by natural service (NS; n=29) during the early transitional breeding phase in mid-September through mid-December (corresponding to 12:12h daylight/darkness). E/OS used an intravaginal device containing 300mg of P4 for 12±1d. At P4 removal, 2mL of PGF2α was administered IM. Twenty-four hours before (E) or 24h after (L) P4 removal, an IM dose of 1.5mL containing 120IU of eCG and 60IU of hCG was given. A third control (C) group (n=38) was not exposed to gonadotrophins. GnRH analogue was given (n=51) 5 days after insemination, and the remaining goats (n=53) received an IM dose of 2mL of saline solution. PR was evaluated at 18 to 24 (dpb) by non-return to oestrus (NRE), at 30 dpb by pregnancy-specific protein B (PSPB), and at 40 dpb by ultrasound imaging (UI). EV was determined from the difference between pregnancy outcomes for NRE and PSPB, and PSPB and UI. Statistical analysis (JMP/SAS vs.11; SAS Institute Inc.) were obtained using logistic regression. All concomitant variables (i.e. parity, bodyweight, days of P4 exposure, and lactation were not influenced by PR or EV; P>0.07). The overall PR was 71% for LAI and 69% for NS and, as shown in Table 1, was similar (P>0.49) at all times (at 18 to 24, 30, and 40 dpb). Likewise, the breeding procedure did not influence the levels of EV at 30 or 40 dpb. E/OS protocol or the use of GnRH 5 dpb did not affect PR or EV at any of the time points evaluated.
Table 1.
Main effect mean comparisons and logistic model probabilities for pregnancy rate (PR) and embryo viability (EV) by main treatment effect
Response variable (days post-breeding)
Breeding procedure
E/OS Protocol
Gonadotrophin
LAI
NS
P>
Control
Early
Late
P>
GnRH
Placebo
P>
PR at 18–24
77
72
0.49
76
73
78
0.83
78
74
0.49
PR at 30
68
66
0.65
66
65
70
0.82
71
64
0.43
PR at 40
69
69
0.78
66
69
73
0.77
73
66
0.43
EV at 30
89
90
0.94
86
94
90
0.65
92
87
0.46
EV at 40
88
95
0.42
86
89
94
0.73
92
87
0.43
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Loetz E, Rojas M. 112 Follicular dynamics and oestrus response of Alpine goats with oestrus/ovulation synchronized during the early transitional reproductive phase using gonadotrophin given early or late. Reprod Fertil Dev 2021. [DOI: 10.1071/rdv33n2ab112] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Oestrus and ovulation synchronization (E/OS) regimens for fixed-timed breeding are useful when consistently eliciting ovulation. Early synchronization in the reproductive season promotes unreliable oestrus behavioural and physiologic response due to insufficient ovarian priming. In ruminants, equine (eCG) or human chorionic gonadotrophin (hCG) has FSH bioactivity or elicits ovulation, correspondingly. Hence, 120 and 60IU of eCG and hCG, respectively, are included in goat E/OS regimes. This experiment addresses the time when eCG/hCG (CG) is given relative to progestagen (P4) withdrawal and its effect on oestrus and ovulation. Fourteen non-lactating, Alpine breed goats, ranging from 1 to 6 kiddings, averaging±s.d. 3.9±2.0 years of age, and 56.3±5.0kg of bodyweight (BW), and body condition score (BCS) of 2.6±0.2, were evaluated early in the transitional reproductive phase (12h daylight:12h darkness). E/OS was accomplished with 12 day of P4 (200 mg) exposure by intravaginal insert. Three treatments were evaluated: Traditional (T; n=4) did not receive CG and served as the control group; early (E; n=5) received CG 24h before P4 removal; and reverse (R; n=5) received PGF2α 24h before P4 withdrawal as well as CG concurrent with P4 withdrawal. Oestrus response to E/OS was evaluated 24h after breeding using epididymectomized bucks. Ovaries were scanned by transrectal ultrasound (Aloka SSD-500V/7.5-MHz linear array probe) for 4 consecutive days starting with the first i.m. injection of 1.0mL of PGF2α or 1.5mL of CG. Images were digitized (MediCapture™) for later morphometry. The absence of effect (P>0.05) from concomitant variables age, BW, BCS, and parity was ascertained using a logistic regression model (JMP/SAS v15; SAS Institute Inc.). Ovulation, defined as the disappearance of the largest (>7mm) preovulatory follicle on a subsequent observation, was 100, 80, and 100%; and the average±s.e. number of ovulations per goat was 2±0.41, 1±0.32, and 1.3±0.49 (P>0.05). Table 1 summarises follicular size documented of 122 observations of ovulatory areas. Graafian follicle location was not different for left or right ovaries (P>0.05). Oestrus behavioural response to each E/OS treatment (T, E, or L) up to 24h after P4 removal was 50, 80, and 80% (P>0.05), respectively. In summary, oestrus response and ovulation were not affected by the variables studied. In this experience the timing of CG was not relevant.
Table 1.
Mean diameter (±SE; mm) of nonovulatory and preovulatory follicles on left (L) and right (R) ovaries
E/OS protocol
Non- and preovulatory
Nonovulatory
Preovulatory
L
R
L
R
L
R
Traditional
6.4±0.6
5.5±0.6
4.8±0.4
4.5±0.4
7.7±0.4
8.9±0.3
Early
5.2±0.3
5.5±0.4
4.9±0.2
4.4±0.3
8.4±1.2
8.1±0.2
Reverse
6.6±0.5
5.3±0.6
5.1±0.4
4.4±0.5
8.7±0.3
8.1±0.2
Overall
5.7±0.19
4.7±0.14
8.3±0.14
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11
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Encinas F, Rojas M, Dawson L, Loetz E. 111 Use of gonadotrophin-releasing hormone (GnRH) or equine and human chorionic gonadotrophins for oestrus synchronization and their influence on embryo viability and progesterone levels on day 16 and 30 of goats receiving GnRH 5 days after intrauterine insemination or natural service. Reprod Fertil Dev 2021. [DOI: 10.1071/rdv33n2ab111] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Gonadotrophin-releasing hormone (GnRH) or equine and human chorionic gonadotrophins (eCG and hCG) were evaluated for oestrus/ovulation synchronization (E/OS), as well as the influence of GnRH 5 days post-breeding (dpb) on embryo viability (EV), and progesterone (P4) levels on Day 16 and 30 after laparoscopic AI (LAI) or natural service (NS). Fifty-four lactating/non-lactating Alpine breed goats (average of 3.82±1.2s.d. years of age) of mixed parity were E/OS during the early transitional breeding phase using 12±1 day of 300mg of P4 and 2mL of prostaglandin F2α analogue given at P4 removal. The experiment included a sub-group from a larger study in which a completely randomised design was used. The germane data were arranged as a 2×2×2 factorial. This study focused on goats receiving 120IU of eCG and 60IU of hCG (n=40), or GnRH analogue (n=14) 24h after P4 removal. At 5 dpb, 25 goats received 1mL (IM) of GnRH and the control (n=29) received 1mL of physiologic saline. Goats were time-bred 48h after P4 withdrawal by LAI (n=33) or NS (n=21). Pregnancy was diagnosed at 18 to 24, 30, and 40 dpb by non-return to oestrus, pregnancy-specific protein B, and ultrasound, respectively. EV was evaluated as the difference between pregnancy diagnosis results. Blood serum P4 was evaluated at 5, 16, and 30 dpb. A logistic regression model was used for statistical analysis. Pregnancy rate (PR) for LAI or NS, at 18–24, 30, and 40 days was 73 vs. 76%, 67 vs. 62%, and 64 vs. 67%, respectively (P>0.72). In contrast, when GnRH was used for E/OS, the 5 dpb GnRH influenced EV at 30 days (95 vs. 81%; P=0.06) but not at 40 days (89 vs. 86%; P>0.35), compared with placebo. Similarly, with the exception of PR at 40 days (43 vs. 72%; P=0.05), for the GnRH and eCG/hCG E/OS groups, respectively, PR was not affected (P>0.12) by either E/OS or GnRH 5 dpb or their interaction (P>0.35) at any pregnancy diagnosis (i.e. 18–24, 30, or 40 dpb). Likewise, levels of P4 at 5, 16, and 30 dpb did not affect PR at 18–24, 30, and 40 dpb (P>0.92, 0.71, and 0.11). As shown in Table 1, the level of P4 was not influenced for goats receiving GnRH or placebo at 5, 16, or 30 dpb. The baseline mean P4 blood serum level for goats receiving GnRH 5 dpb differed at 16 but not at 30 dpb (P<0.001).
Table 1
Blood serum progesterone (P4, ng mL−1) in response to gonadotrophin-releasing hormone (GnRH) or placebo given 5 days post-breeding
Sampling day
GnRH
Placebo
P >1
Mean
±SE
Mean
±SE
5 (baseline)
6.2a
0.83
5.7a
0.72
0.66
16
11.7b
1.11
11.0b
1.05
0.65
30
6.2a
0.89
7.6c
0.84
0.26
a–cMean values with different superscripts within a column signify statistical difference for GnRH (P<0.001) and placebo (P<0.02).
1Probability for mean differences in the same row.
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12
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Shaikh M, Bean C, Bergholz L, Rojas M, Ali M, Forneris T. Integrating a Sport-Based Trauma-Sensitive Program in a National Youth-Serving Organization. Child Adolesc Social Work J 2021; 38:449-461. [PMID: 34108798 PMCID: PMC8179094 DOI: 10.1007/s10560-021-00776-7] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/18/2021] [Indexed: 05/07/2023]
Abstract
UNLABELLED There is a pressing need to equip youth-serving community organizations to respond to the unique needs of trauma-exposed children. Early prevention measures can be an effective means of redirecting children to self-regulatory healing, while facilitating their transition toward strength-based thriving. Sport can offer a powerful opportunity to reach these children; however there remains little information on how to effectively develop, deliver, evaluate, and sustain trauma-sensitive sport programs in a community context. The purpose of this paper is to outline a case study of integrating sport-based trauma-sensitive practices with BGC Canada's national Bounce Back League program. An interdisciplinary partnership of academic, community, and practice experts used a community-based participatory action research approach, paired with a knowledge translational approach, to guide the process of program development. Mixed methods (e.g., surveys, logbooks, interviews, focus groups, online communications) were used to generate ongoing insights of staff's training experiences, successes and challenges of program implementation, and potential impact of program on club members. Several stages of program development are described, including: (a) collaboratively planning the program; (b) piloting the program to three clubs; (c) adapting the program using pilot insights; (d) expanding the adapted program to ten clubs; and (e) creating opportunities to maintain, sustain, and scale-out practices throughout grant duration and beyond. Lessons learned regarding the leadership team's experiences in terms of developing, adapting, and integrating trauma-sensitive practices in this community context are shared. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s10560-021-00776-7.
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Affiliation(s)
- M. Shaikh
- University of Ottawa, Ottawa, ON Canada
| | - C. Bean
- Brock University, St. Catharines, ON Canada
| | | | - M. Rojas
- Edgework Consulting, Boston, MA USA
| | - M. Ali
- BGC Canada, Toronto, ON Canada
| | - T. Forneris
- The University of British Columbia, Kelowna, BC Canada
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13
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Calle M, Dawson L, Rojas M, Loetz E. 151 Influence of chorionic gonadotrophin, breeding procedure, and gonadotrophin-releasing hormone on pregnancy, embryo viability, and kidding rate of lactating Alpine goats time inseminated during the early transitional reproductive phase. Reprod Fertil Dev 2020. [DOI: 10.1071/rdv32n2ab151] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Oestrus and ovulation synchronisation (E/OS) regimens containing equine chorionic gonadotrophin (ECG) are used for follicular stimulation during the early transitional reproductive phase and goat anestrus. However, the effects of ECG when applied at different times are unknown. Thus, the objective was to evaluate the influence of ECG, breeding procedure, and gonadotrophin-releasing hormone (GnRH) on pregnancy, embryonic viability, and kidding rate in dairy goats. We used 41 alpine goats (mean±standard deviation: 3.82±1.2 years old; 57.0±6.0kg of bodyweight; 1.75-2.25 body condition score; 195±16.7 days in milk; range of 1-4 kiddings). This study took place during the transitional phase (12h of daylight, 12h of dark) in September (35.9° N, 97.3° W) using controlled internal drug release intravaginal inserts (300mg of progestagen; P4) for 11, 12, or 13 days with a 2-mL intramuscular dose containing 10mg of dinoprost tromethamine at P4 removal. The E/OS protocols differed on the time when the 1-mL intramuscular dose of P.G. 600© (Merck Animal Health; 120 and 60IU of ECG and human chorionic gonadotrophin, respectively) was given (i.e. early=24h before P4 removal; late=24h after P4 removal), and the traditional control group did not receive P.G. 600. Time breeding, either by laparoscopic-aided insemination using frozen-thawed semen (n=28) or natural (n=13), was scheduled 48h after P4 removal. To improve embryo survival, 5 days post-breeding (dpb) 21 goats received 1mL of GnRH analogue intramuscularly as 50µgmL−1 gonadorelin diacetate tetrahydrate, and 20 control goats received 1mL of placebo intramuscularly. Pregnancy rate (PR) was evaluated at d 18-24 by non-return to oestrus, d 30 by pregnancy-specific protein B, and d 40 by ultrasound. Kidding rate was determined for females with at least one newborn. Logistic regression was used to establish statistical significance. Days of P4 exposure did not influence any response variable (P>0.20). Table 1 summarises the results; age influenced all PR evaluations. The number of kiddings and administration of GnRH at 5 dpb had a significant effect on PR, whereas bodyweight, days in milk, E/OS protocol, and breeding procedure were not influential. Embryo viability and kidding rate were not influenced by any variable. In short, P.G. 600 had no bearing on any response variable analysed. Late-lactating goats can be evaluated early in the transitional breeding phase using PR at 18-24, 30, or 40 dpb. As indicated by the lack of effect on embryo viability at 30 and 40 days, the mechanism by which GnRH increases PR was not by decreasing embryo mortality.
Table 1.Logistic model independent variable probabilities on response variables1
Response variable
Age (years)
BW
Kidding
DIM
E/OS protocol
GnRH
Breeding procedure
PR 18-24 d
0.02
0.65
0.15
0.52
0.37
0.21
0.30
PR 30 d
0.01
0.56
0.05
0.58
0.61
0.05
0.39
PR 40 d
0.001
0.12
0.01
0.60
0.62
0.02
0.35
EV 30 d
0.62
0.96
0.61
0.63
0.30
0.32
0.36
EV 40 d
0.44
0.90
0.26
0.36
0.46
0.17
0.40
KR
0.83
0.93
0.63
0.86
0.42
0.29
0.35
1BW=body weight; DIM=days in milk; E/OS=oestrus/ovulation synchronisation; GnRH=gonadotrophin-releasing hormone; PR=pregnancy rate; EV=embryo viability at 30 and 40 d; KR=kidding rate.
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14
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Carrasquilla M, Zakzuk Sierra J, Alvis-Zakzuk N, Gomez de la Rosa F, Beltran-Rodriguez C, Rojas M, Prieto E, Yen G, Parellada C, Pavelyev A, De La Hoz F, Alvis Guzman N, Monsanto H. PIN9 PUBLIC HEALTH AND ECONOMIC IMPACT OF A GENDER-NEUTRAL QUADRIVALENT HUMAN PAPILLOMAVIRUS VACCINATION PROGRAM IN COLOMBIA. Value Health Reg Issues 2019. [DOI: 10.1016/j.vhri.2019.08.240] [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]
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15
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Rojas M, Jimenez-Bremont F, Villicaña C, Carreón-Palau L, Arredondo-Vega BO, Gómez-Anduro G. Involvement of OpsLTP1 from Opuntia streptacantha in abiotic stress adaptation and lipid metabolism. Funct Plant Biol 2019; 46:816-829. [PMID: 31138396 DOI: 10.1071/fp18280] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 04/27/2019] [Indexed: 06/09/2023]
Abstract
Plant lipid transfer proteins (LTPs) exhibit the ability to transfer lipids between membranes in vitro, and have been implicated in diverse physiological processes associated to plant growth, reproduction, development, biotic and abiotic stress responses. However, their mode of action is not yet fully understood. To explore the functions of the OpsLTP1 gene encoding a LTP from cactus pear Opuntia streptacantha Lem., we generated transgenic Arabidopsis thaliana (L.) Heynh. plants to overexpress OpsLTP1 and contrasted our results with the loss-of-function mutant ltp3 from A. thaliana under abiotic stress conditions. The ltp3 mutant seeds showed impaired germination under salt and osmotic treatments, in contrast to OpsLTP1 overexpressing lines that displayed significant increases in germination rate. Moreover, stress recovery assays showed that ltp3 mutant seedlings were more sensitive to salt and osmotic treatments than wild-type plants suggesting that AtLTP3 is required for stress-induced responses, while the OpsLTP1 overexpressing line showed no significant differences. In addition, OpsLTP1 overexpressing and ltp3 mutant seeds stored lower amount of total lipids compared with wild-type seeds, showing changes primarily on 16C and 18C fatty acids. However, ltp3 mutant also lead changes in lipid profile and no over concrete lipids which may suggest a compensatory activation of other LTPs. Interestingly, linoleic acid (18:2ω6) was consistently increased in neutral, galactoglycerolipids and phosphoglycerolipids of OpsLTP1 overexpressing line indicating a role of OpsLTP1 in the modulation of lipid composition in A. thaliana.
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Affiliation(s)
- Mario Rojas
- Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Av. Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita Apdo, Postal 128, 23096 La Paz, B.C.S., México
| | - Francisco Jimenez-Bremont
- Instituto Potosino de Investigación Científica y Tecnológica. Camino a la Presa San José 2055, Col. Lomas 4 sección CP. 78216, San Luis Potosí, S.L.P., México
| | - Claudia Villicaña
- CONACYT-Centro de Investigación en Alimentación y Desarrollo, A. C. Carretera a Eldorado Km. 5.5, Apartado Postal 32-A. C. P. 80110, Culiacán, Sinaloa, México
| | - Laura Carreón-Palau
- Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Av. Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita Apdo, Postal 128, 23096 La Paz, B.C.S., México
| | - Bertha Olivia Arredondo-Vega
- Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Av. Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita Apdo, Postal 128, 23096 La Paz, B.C.S., México
| | - Gracia Gómez-Anduro
- Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Av. Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita Apdo, Postal 128, 23096 La Paz, B.C.S., México; and Corresponding author.
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16
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Rodríguez-Perea AL, Rojas M, Velilla-Hernández PA. High concentrations of atorvastatin reduce in-vitro function of conventional T and regulatory T cells. Clin Exp Immunol 2019; 196:237-248. [PMID: 30638266 DOI: 10.1111/cei.13260] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/03/2019] [Indexed: 12/15/2022] Open
Abstract
Regulatory T cells (Tregs ) modulate the magnitude of immune responses and possess therapeutic potential in an array of immune diseases. Statins reduce the activation and proliferation of conventional T cells (Tcons ), and they seem to up-regulate the frequency and function of Tregs . However, there is a lack of simultaneous evaluation of the in-vitro effect of statins on the functional profile of Tregs versus Tcons . Herein, magnetically purified Tcons and Tregs were stimulated with CD3/CD28/interleukin (IL)-2 in the presence of atorvastatin (ATV) at 1 or 10 µM. The suppressive function of Tregs , the expression of markers associated with Treg function, activation levels, cytokine production and calcium flux in both subpopulations were assessed by flow cytometry. ATV had no cytotoxic effect on T cells at the concentrations used. Interestingly, 10 µM ATV hampered the suppressive capacity of Tregs . Moreover, this higher concentration reduced the expression of forkhead box protein 3 (FoxP3), cytotoxic T lymphocyte antigen (CTLA-4) and programmed death 1 (PD-1). In Tcons , ATV at 10 µM decreased PD-1 and CD45RO expression. The expression of CD25, CD69, CD95, CD38, CD62L, CCR7 and perforin was not affected in both subpopulations or at any ATV concentrations. Remarkably, 10 µM ATV increased the percentage of tumour necrosis factor (TNF)-α-producing Tregs . Although there was a reduction of calcium flux in Tcons and Tregs , it was only significant in 10 µM ATV-treated Tcons . These results suggested that 10 µM ATV affects the cellular functions of both populations; however, this concentration particularly affected several aspects of Treg biology: its suppressive function, cytokine production and expression of Treg -specific markers.
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Affiliation(s)
- A L Rodríguez-Perea
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia.,Grupo Bacterias & Cáncer, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - M Rojas
- Grupo de Inmunología Celular e Inmunogenética (GICIG), Facultad de Medicina, Instituto de Investigaciones Médicas, Universidad de Antioquia UdeA, Medellín, Colombia.,Unidad de Citometría, Facultad de Medicina, Sede de Investigación Universitaria, Universidad de Antioquia UdeA, Medellín, Colombia
| | - P A Velilla-Hernández
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
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17
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Paniagua R, Rojas M, Ramos A. Managing Peritoneal Dialysis Complications through Remote Patient Management Protocols. Contributions to Nephrology 2019; 197:65-72. [DOI: 10.1159/000496320] [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: 11/19/2022]
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18
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Prieto E, Jiang Y, Yang X, Graham J, Monsanto H, Ruiz J, Beltrán C, Rojas M. A cost-effectiveness analysis of vaccinating older adults with the 23-valent pneumococcal polysaccharide vaccine (PPV23) compared to no vaccination, the 13-valent pneumococcal conjugate vaccine (PCV13), or PCV13 followed by PPV23 in Colombia. Int J Infect Dis 2018. [DOI: 10.1016/j.ijid.2018.04.3456] [Citation(s) in RCA: 2] [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: 10/28/2022] Open
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19
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Zunino C, Notejane M, Bernadá M, Rodríguez L, Vanoli N, Rojas M, Benech L, Mimbacas I. Pain in children and adolescents hospitalized in a center of reference. ACTA ACUST UNITED AC 2018; 89:67-73. [PMID: 29664505 DOI: 10.4067/s0370-41062018000100067] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 10/30/2017] [Indexed: 11/17/2022]
Abstract
INTRODUCTION The evaluation and treatment of pain in hospitalized is still an important health pro blem. OBJECTIVE To know the prevalence, characteristics and approaches to pain management in children and adolescents hospitalized in the Pediatric Hospital of the Pereira Rossell Center (HP-CH- PR), a pediatric reference center in Uruguay. PATIENTS AND METHOD Cross-sectional study, through survey and review of clinical records on 09/13/16. All hospitalized children under the age of 19 were included. VARIABLES age, gender, reason for admission, presence of cognitive disorder, the prevalen ce of pain at some time during hospitalization, in the last 24 hours and during the interview, cause of maximum pain, intensity, pharmacological and non-pharmacological treatment. RESULTS 97.4% (152/156) hospitalized children were included. Pain prevalence at some point during hospitalization: 51.3% (78/152, 95% CI: 43.2-59.3); in the previous 24 hours: 39.5% (60/152, 95% CI: 31.7-47.2); during the interview: 15.8% (24/152, 95% CI: 10-21.5). Intensity: mild 13/24, moderate-severe 11/24. Maximum pain referred during hospitalization: needle punctures 48.5% (38/78). They had some analgesic prescription 47.3% of them had some analgesic prescription. Inadequate interdose inter val: 45.8%; adequate dose 98.9%; intravenous administration: 43.7%; contraindication to oral route: 40.5%. CONCLUSIONS Regarding children and adolescents hospitalized, 39.5% reported pain 24 hours before being the interviewed and 15.8% reported pain during the interview. The maximum pain reported during hospitalization was due to needle punctures. Children in pain with inappropriate analgesic prescriptions are still detected.
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Affiliation(s)
- C Zunino
- Departamento de Pediatría, Facultad de Medicina, Universidad de la República, Uruguay,
| | - M Notejane
- Departamento de Pediatría, Facultad de Medicina, UdelaR, Montevideo, Uruguay
| | - M Bernadá
- Departamento de Pediatría, Facultad de Medicina, UdelaR, Montevideo, Uruguay
| | - L Rodríguez
- Facultad de Medicina, UdelaR, Montevideo, Uruguay
| | - N Vanoli
- Facultad de Medicina, UdelaR, Montevideo, Uruguay
| | - M Rojas
- Facultad de Medicina, UdelaR, Montevideo, Uruguay
| | - L Benech
- Facultad de Medicina, UdelaR, Montevideo, Uruguay
| | - I Mimbacas
- Facultad de Medicina, UdelaR, Montevideo, Uruguay
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20
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Coggon D, Ntani G, Palmer KT, Felli VE, Harari F, Quintana LA, Felknor SA, Rojas M, Cattrell A, Vargas-Prada S, Bonzini M, Solidaki E, Merisalu E, Habib RR, Sadeghian F, Kadir MM, Warnakulasuriya SSP, Matsudaira K, Nyantumbu-Mkhize B, Kelsall HL, Harcombe H. Drivers of international variation in prevalence of disabling low back pain: Findings from the Cultural and Psychosocial Influences on Disability study. Eur J Pain 2018; 23:35-45. [PMID: 29882614 PMCID: PMC6492178 DOI: 10.1002/ejp.1255] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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] [Accepted: 06/01/2018] [Indexed: 11/13/2022]
Abstract
Background Wide international variation in the prevalence of disabling low back pain (LBP) among working populations is not explained by known risk factors. It would be useful to know whether the drivers of this variation are specific to the spine or factors that predispose to musculoskeletal pain more generally. Methods Baseline information about musculoskeletal pain and risk factors was elicited from 11 710 participants aged 20–59 years, who were sampled from 45 occupational groups in 18 countries. Wider propensity to pain was characterized by the number of anatomical sites outside the low back that had been painful in the 12 months before baseline (‘pain propensity index’). After a mean interval of 14 months, 9055 participants (77.3%) provided follow‐up data on disabling LBP in the past month. Baseline risk factors for disabling LBP at follow‐up were assessed by random intercept Poisson regression. Results After allowance for other known and suspected risk factors, pain propensity showed the strongest association with disabling LBP (prevalence rate ratios up to 2.6, 95% CI: 2.2–3.1; population attributable fraction 39.8%). Across the 45 occupational groups, the prevalence of disabling LBP varied sevenfold (much more than within‐country differences between nurses and office workers), and correlated with mean pain propensity index (r = 0.58). Conclusions Within our study, major international variation in the prevalence of disabling LBP appeared to be driven largely by factors predisposing to musculoskeletal pain at multiple anatomical sites rather than by risk factors specific to the spine. Significance Our findings indicate that differences in general propensity to musculoskeletal pain are a major driver of large international variation in the prevalence of disabling low back pain among people of working age.
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Affiliation(s)
- D Coggon
- Medical Research Council Lifecourse Epidemiology Unit, University of Southampton, UK.,Arthritis Research UK/MRC Centre for Musculoskeletal Health and Work, University of Southampton, UK
| | - G Ntani
- Medical Research Council Lifecourse Epidemiology Unit, University of Southampton, UK.,Arthritis Research UK/MRC Centre for Musculoskeletal Health and Work, University of Southampton, UK
| | - K T Palmer
- Medical Research Council Lifecourse Epidemiology Unit, University of Southampton, UK.,Arthritis Research UK/MRC Centre for Musculoskeletal Health and Work, University of Southampton, UK
| | - V E Felli
- School of Nursing, University of São Paulo, Brazil
| | - F Harari
- Corporación para el Desarrollo de la Producción y el Medio Ambiente Laboral - IFA (Institute for the Development of Production and the Work Environment), Quito, Ecuador
| | - L A Quintana
- Department of Industrial Engineering, School of Engineering, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - S A Felknor
- Southwest Center for Occupational and Environmental Health, The University of Texas Health Science Center at Houston School of Public Health, TX, USA.,Center for Disease Control and Prevention/National Institute for Occupational Safety and Health, Atlanta, GA, USA
| | - M Rojas
- Program Health, Work and Environment in Central America, Institute for Studies on Toxic Substances (IRET), National University of Costa Rica, Heredia, Costa Rica
| | - A Cattrell
- North East London NHS Foundation Trust, Goodmayes Hospital, Ilford, Essex, UK
| | - S Vargas-Prada
- Center for Research in Occupational Health (CiSAL), Universitat Pompeu Fabra, Barcelona, Spain.,CIBER of Epidemiology and Public Health, Barcelona, Spain.,IMIM (Hospital del Mar Research Institute), Barcelona, Spain.,Unidad Central de Contingencias Comunes (U3C), Mutua Asepeyo, Spain
| | - M Bonzini
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - E Solidaki
- Department of Social Medicine, Medical School, University of Crete, Heraklion, Greece
| | - E Merisalu
- Institute of Technology, Estonian University of Life Sciences, Tartu, Estonia
| | - R R Habib
- Department of Environmental Health, Faculty of Health Sciences, American University of Beirut, Lebanon
| | - F Sadeghian
- Department of Occupational Health, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - M M Kadir
- Department of Community Health Sciences, Aga Khan University, Karachi, Pakistan
| | - S S P Warnakulasuriya
- Department of Allied Health Sciences, Faculty of Medical Sciences, University of Sri Jayawardenepura, Gangodawila, Nugegoda, Sri Lanka
| | - K Matsudaira
- Department for Medical Research and Management for Musculoskeletal Pain, 22nd Century Medical and Research Center, Faculty of Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | - B Nyantumbu-Mkhize
- National Institute for Occupational Health, National Health Laboratory Service, Johannesburg, South Africa.,Faculty of Health Sciences, School of Public Health, University of Witwatersrand, Johannesburg, South Africa
| | - H L Kelsall
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Vic., Australia
| | - H Harcombe
- Department of Preventive and Social Medicine, University of Otago, Dunedin, New Zealand
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21
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Abstract
The CEA family consists of two structurally and functionally distinct subgroups; the group including CEA, NCA and CGM-6 which are cell surface-bound by phosphatidylinositol (PI) linkages, and the group of BGP splice variants which have transmembrane and cytoplasmic domains. Although all CEA family members mediate intercellular adhesion in vitro, the PI-linked group show Ca++ and temperature independent adhesion whereas the BGP group show rapidly reversible Ca++ and temperature dependent adhesion. From the close alignment in cDNA nucleotide sequences between family members and between repeated domains in one family member, it is apparent that the CEA family is now rapidly evolving; in fact, analogs of only the transmembrane BGP group have been found so far in the mouse. The addition of a new group of potent adhesion molecules to complex species at some time after the rodent radiation has strong evolutional implications, which are discussed.
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Affiliation(s)
- C P Stanners
- McGill Cancer Centre, McGill University, Montreal, Quebec-Canada
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22
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Lendermon EA, Dodd-O JM, Coon TA, Wang X, Ensor CR, Cardenes N, Koodray CL, Heusey HL, Bennewitz MF, Sundd P, Bullock GC, Popescu I, Guo L, O'Donnell CP, Rojas M, McDyer JF. Azithromycin Fails to Prevent Accelerated Airway Obliteration in T-bet -/- Mouse Lung Allograft Recipients. Transplant Proc 2018; 50:1566-1574. [PMID: 29880387 DOI: 10.1016/j.transproceed.2018.02.070] [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] [Received: 09/23/2017] [Accepted: 02/16/2018] [Indexed: 10/17/2022]
Abstract
BACKGROUND Cellular and molecular mechanisms of acute and chronic lung allograft rejection have yet to be clearly defined, and obliterative bronchiolitis (OB) remains the primary limitation to survival in lung transplant recipients (LTRs). We have previously shown that T-bet-deficient recipients of full major histocompatibility complex (MHC)-mismatched, orthotopic left lung transplants develop accelerated obliterative airway disease (OAD) in the setting of acute cellular rejection characterized by robust alloimmune CD8+ interleukin (IL)-17 and interferon (IFN)-γ responses that are attenuated with neutralization of IL-17. Azithromycin has been shown to be beneficial in some LTRs with bronchiolitis obliterans syndrome/OB. Here, we evaluated the effects of azithromycin on rejection pathology and T-cell effector responses in T-bet-/- recipients of lung transplants. METHODS Orthotopic left lung transplantation was performed in BALB/c → B6 wild type or BALB/c → B6 T-bet-/- strain combinations as previously described. Mice treated with azithromycin received 10 mg/kg or 50 mg/kg subcutaneously daily. Lung allograft histopathology was analyzed at day 10 or day 21 post-transplantation, and neutrophil staining for quantification was performed using anti-myeloperoxidase. Allograft mononuclear cells were isolated at day 10 for T-cell effector cytokine response assessment using flow cytometry. RESULTS We show that while azithromycin significantly decreases lung allograft neutrophilia and CXCL1 levels and attenuates allospecific CD8+ IL-17 responses early post-transplantation, OAD persists in T-bet-deficient mice. CONCLUSIONS Our results indicate that lung allograft neutrophilia is not essential for the development of OAD in this model and suggest allospecific T-cell responses that remain despite marked attenuation of CD8+ IL-17 are sufficient for obliterative airway inflammation and fibrosis.
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Affiliation(s)
- E A Lendermon
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
| | - J M Dodd-O
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA; Department of Anesthesiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - T A Coon
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - X Wang
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - C R Ensor
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - N Cardenes
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - C L Koodray
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - H L Heusey
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - M F Bennewitz
- Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - P Sundd
- Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - G C Bullock
- Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - I Popescu
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - L Guo
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - C P O'Donnell
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - M Rojas
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - J F McDyer
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
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23
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Moreno PI, Vilanova I, Villa-Martínez R, Dunbar RB, Mucciarone DA, Kaplan MR, Garreaud RD, Rojas M, Moy CM, De Pol-Holz R, Lambert F. Onset and Evolution of Southern Annular Mode-Like Changes at Centennial Timescale. Sci Rep 2018; 8:3458. [PMID: 29472572 PMCID: PMC5823851 DOI: 10.1038/s41598-018-21836-6] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [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: 08/22/2017] [Accepted: 02/05/2018] [Indexed: 11/29/2022] Open
Abstract
The Southern Westerly Winds (SWW) are the surface expression of geostrophic winds that encircle the southern mid-latitudes. In conjunction with the Southern Ocean, they establish a coupled system that not only controls climate in the southern third of the world, but is also closely connected to the position of the Intertropical Convergence Zone and CO2 degassing from the deep ocean. Paradoxically, little is known about their behavior since the last ice age and relationships with mid-latitude glacier history and tropical climate variability. Here we present a lake sediment record from Chilean Patagonia (51°S) that reveals fluctuations of the low-level SWW at mid-latitudes, including strong westerlies during the Antarctic Cold Reversal, anomalously low intensity during the early Holocene, which was unfavorable for glacier growth, and strong SWW since ~7.5 ka. We detect nine positive Southern Annular Mode-like events at centennial timescale since ~5.8 ka that alternate with cold/wet intervals favorable for glacier expansions (Neoglaciations) in southern Patagonia. The correspondence of key features of mid-latitude atmospheric circulation with shifts in tropical climate since ~10 ka suggests that coherent climatic shifts in these regions have driven climate change in vast sectors of the Southern Hemisphere at centennial and millennial timescales.
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Affiliation(s)
- P I Moreno
- Departamento de Ciencias Ecológicas, Universidad de Chile, Santiago, Chile.
| | - I Vilanova
- CONICET-Museo Argentino de Ciencias Naturales, Buenos Aires, Argentina
| | | | - R B Dunbar
- School of Earth, Energy & Environmental Sciences, Stanford University, Palo Alto, CA, USA
| | - D A Mucciarone
- School of Earth, Energy & Environmental Sciences, Stanford University, Palo Alto, CA, USA
| | - M R Kaplan
- Geochemistry, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA
| | - R D Garreaud
- Departamento de Geofísica, Universidad de Chile, Santiago, Chile
| | - M Rojas
- Departamento de Geofísica, Universidad de Chile, Santiago, Chile
| | - C M Moy
- Department of Geology, University of Otago, Dunedin, New Zealand
| | - R De Pol-Holz
- GAIA-Antártica, Universidad de Magallanes, Punta Arenas, Chile
| | - F Lambert
- Departamento de Geografía Física, Pontificia Universidad Católica de Chile, Santiago, Chile
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24
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Abstract
In this article, we present an obstacle avoidance controller implemented in a field programmable gate array for an electric wheelchair. It is based on a traditional approach with ultrasonic sensors and fuzzy logic. Various tests were conducted to characterize the prototype and to evaluate the controller performance. The results showed that the system is able to acquire data from sensors and make decisions 46.16 times per second. The sensors’ coverage extends 3 m to the front, rear, left, and right sides of the wheelchair; moreover, the sensors detect 0.95-cm diameter objects at 40 cm. The power consumption was evaluated, and it was found that the hardware architecture reduces the battery life by only 0.87%. Furthermore, the controller helped to navigate in confined areas, avoiding obstacles with cautious movements and decreasing the likelihood of collision. The proposed methodology uses data from eight sonars distributed around the wheelchair to make navigation decisions, besides the hardware-based architecture guarantees real-time control and on-time response.
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Affiliation(s)
- Mario Rojas
- Tecnologico de Monterrey National Department of Research, Puente 222, Del. Tlalpan, Mexico City, 14380, Mexico
| | - Pedro Ponce
- Tecnologico de Monterrey National Department of Research, Puente 222, Del. Tlalpan, Mexico City, 14380, Mexico
| | - Arturo Molina
- Tecnologico de Monterrey National Department of Research, Puente 222, Del. Tlalpan, Mexico City, 14380, Mexico
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25
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Rosi EJ, Bechtold HA, Snow D, Rojas M, Reisinger AJ, Kelly JJ. Urban stream microbial communities show resistance to pharmaceutical exposure. Ecosphere 2018. [DOI: 10.1002/ecs2.2041] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
- E. J. Rosi
- Cary Institute of Ecosystem Studies Millbrook New York 12545 USA
| | | | - D. Snow
- Nebraska Water Center/School of Natural Resources University of Nebraska‐Lincoln Lincoln Nebraska 68583 USA
| | - M. Rojas
- Department of Biology Loyola University Chicago Chicago Illinois 60660 USA
| | - A. J. Reisinger
- Cary Institute of Ecosystem Studies Millbrook New York 12545 USA
- Soil and Water Sciences Department University of Florida Gainesville Florida 32611 USA
| | - J. J. Kelly
- Department of Biology Loyola University Chicago Chicago Illinois 60660 USA
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26
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Narasimhulu D, Brown A, Egbert NM, Rojas M, Haberman S, Bhutada A, Minkoff H, Rastogi S. Maternal magnesium therapy, neonatal serum magnesium concentration and immediate neonatal outcomes. J Perinatol 2017; 37:1297-1303. [PMID: 28981078 DOI: 10.1038/jp.2017.132] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 06/27/2017] [Accepted: 07/06/2017] [Indexed: 11/09/2022]
Abstract
OBJECTIVE The fetus is exposed to magnesium administered to the pregnant mother. However, there is controversy regarding magnesium-related neonatal adverse outcomes, largely driven by a limited understanding of the factors that influence neonatal serum magnesium concentrations and associated outcomes. The objective of this study was to examine the relationship between antenatal maternal magnesium dose and serum concentrations, neonatal serum magnesium concentration and immediate neonatal outcomes. STUDY DESIGN A retrospective study was conducted at a community-based teaching hospital. Neonatal serum magnesium concentrations within 48 h of birth were used to stratify magnesium-exposed neonates into three groups: group 1: <2.5 mg dl-1, group 2: ⩾2.5 to <4.5 mg dl-1, and group 3:⩾4.5 mg dl-1. Immediate neonatal outcomes were compared between the three groups. Total maternal magnesium dose and serum magnesium concentrations before the delivery were correlated with neonatal serum magnesium concentrations and outcomes. RESULTS Of the 304 mother-baby dyads between 24 and 34 weeks gestation, 237 received antenatal magnesium. Neonatal serum magnesium concentration was 3.14±0.83 mg dl-1 in exposed and 1.96±0.42 mg dl-1 in unexposed neonates (P<0.001). Compared with group 2, neonates had higher odds of grade 3 or 4 intraventricular hemorrhage in group 1 (adjusted odds ratio (AOR) 5.95 (95% confidence interval (CI) 1.05 to 33.66)) and group 3 (AOR 8.42 (95% CI 1.35 to 52.54)). Group 3 neonates also had increased odds of periventricular leukomalacia (AOR: 5.37 (95% CI 1.02 to 28.28) compared with group 2 neonates. Predictors of neonatal serum magnesium concentrations included maternal magnesium dose (r=0.66, P<0.0001), duration of therapy (r=0.70, P<0.0001) and serum concentration (r=0.72, P<0.001). CONCLUSION The between-group differences highlight that there is a therapeutic range of neonatal serum magnesium concentrations for neuroprotective effects of antenatal magnesium sulfate, while concentrations outside of this range may be associated with adverse neonatal outcomes. Further studies are needed to determine the optimal dose and duration of maternal magnesium to minimize adverse neonatal outcomes.
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Affiliation(s)
- D Narasimhulu
- Department of Obstetrics and Gynecology, Maimonides Medical Center, Albert Einstein College of Medicine, Brooklyn, NY, USA
| | - A Brown
- Department of Pediatrics, Maimonides Medical Center, Albert Einstein College of Medicine, Brooklyn, NY, USA
| | - N M Egbert
- Department of Obstetrics and Gynecology, Maimonides Medical Center, Albert Einstein College of Medicine, Brooklyn, NY, USA
| | - M Rojas
- Department of Pediatrics, Maimonides Medical Center, Albert Einstein College of Medicine, Brooklyn, NY, USA
| | - S Haberman
- Department of Obstetrics and Gynecology, Maimonides Medical Center, Albert Einstein College of Medicine, Brooklyn, NY, USA
| | - A Bhutada
- Department of Pediatrics, Maimonides Medical Center, Albert Einstein College of Medicine, Brooklyn, NY, USA
| | - H Minkoff
- Department of Obstetrics and Gynecology, Maimonides Medical Center, Albert Einstein College of Medicine, Brooklyn, NY, USA
| | - S Rastogi
- Department of Pediatrics, Maimonides Medical Center, Albert Einstein College of Medicine, Brooklyn, NY, USA
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27
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Rocha Arrieta YC, Rojas M, Vasquez G, Lopez J. The Lymphocytes Stimulation Induced DNA Release, a Phenomenon Similar to NETosis. Scand J Immunol 2017; 86:229-238. [PMID: 28805301 DOI: 10.1111/sji.12592] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Accepted: 07/30/2017] [Indexed: 12/23/2022]
Abstract
The release of DNA into the extracellular milieu by neutrophil during a process called NETosis has been postulated as an additional source of autoantigens; a process believed to be important in the pathogenesis of some autoimmune disease, such as systemic lupus erythematosus (SLE). However, it is not established if the B and T cells undergo the release of DNA to the extracellular milleu, in response to different stimuli. In this study, it was observed that the treatment of B and T cells with PMA, ionomycin and the serum from patients with SLE induced the extracellular DNA presence in B and T cells. These findings suggest that the phenomenon were similar to those observed in neutrophil's Etosis; B and T cells also released their DNA into the extracellular milieu. The findings express that serum from patients with SLE and SLEDAI ≤ 8 triggers the release of extracellular DNA in neutrophils, B and T cells, that suggested the presence of soluble factors in the serum that favoured this phenomenon.
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Affiliation(s)
- Y C Rocha Arrieta
- Grupo de Inmunodeficiencias Primarias/Lab 530-531, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - M Rojas
- Unidad de Citometría/Lab 420, Instituto de Investigaciones Médicas, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia.,Grupo de Inmunología Celular e Inmunogenética/Lab 510-511, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - G Vasquez
- Grupo de Inmunología Celular e Inmunogenética/Lab 510-511, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - J Lopez
- Grupo de Inmunodeficiencias Primarias/Lab 530-531, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
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28
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Abstract
Our objective is to investigate which factors and patient characteristics are associated with success in Trabectome surgery.A total of 658 phakic cases with at least of 12 months follow-up were included in the analysis. Baseline demographics and medical data were collected. The main outcome measure was intraocular pressure (IOP), glaucoma medication (Rx), and secondary glaucoma surgery if any. Success was defined as IOP reduction of 20% or more from preoperative IOP and IOP < 21 mm Hg with no secondary surgery throughout the follow-up period. Risk factors for failure were determined by using univariate and multivariate cox regression.At baseline, the average IOP was 23.6 ± 7.8 mm Hg and the average number of medications was 2.6 ± 1.3 for all cases. At 12 months, the average IOP was 16.0 ± 3.6 mm Hg (P < .01) and the average number of medications was 1.8 ± 1.3 (P < .01). Based on the result of multivariate cox regression model, we found that the Trabectome + Phaco (TP) and Trabectome alone (TA) group had a 94% and 79% survival rate at 12 months, respectively. TP cases had 78% lower risk of failure than TA (95% confidence interval [CI]: 54-89), diagnosis of pseudoexfoliation glaucoma had a 54% lower risk of failure than primary open angle glaucoma patients (95% CI: 1-78). Hispanics had an estimated hazard ratio that is 60% lower than Caucasians (95% CI: 18-80); 20% of TA cases and 3% of TP cases were required to undergo additional secondary surgery (P < .01).Trabectome surgery, whether in combination with phacoemulsification cataract removal or stand alone, is associated with a significant reduction of IOP and glaucoma medication. Patients having a higher baseline IOP are expected to have a higher IOP reduction after Trabectome. Pseudoexfoliation glaucoma, combination with phacoemulsification cataract surgery and Hispanic race are factors associated with enhanced Trabectome survival.
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Affiliation(s)
| | - Eydie Miller-Ellis
- Scheie Eye Institute, University of Pennsylvania School of Medicine, Philadelphia, PA
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29
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Rojas M, Ponce P, Molina A. Skills based evaluation of alternative input methods to command a semi-autonomous electric wheelchair. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2016:4593-4596. [PMID: 28269298 DOI: 10.1109/embc.2016.7591750] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This paper presents the evaluation, under standardized metrics, of alternative input methods to steer and maneuver a semi-autonomous electric wheelchair. The Human-Machine Interface (HMI), which includes a virtual joystick, head movements and speech recognition controls, was designed to facilitate mobility skills for severely disabled people. Thirteen tasks, which are common to all the wheelchair users, were attempted five times by controlling it with the virtual joystick and the hands-free interfaces in different areas for disabled and non-disabled people. Even though the prototype has an intelligent navigation control, based on fuzzy logic and ultrasonic sensors, the evaluation was done without assistance. The scored values showed that both controls, the head movements and the virtual joystick have similar capabilities, 92.3% and 100%, respectively. However, the 54.6% capacity score obtained for the speech control interface indicates the needs of the navigation assistance to accomplish some of the goals. Furthermore, the evaluation time indicates those skills which require more user's training with the interface and specifications to improve the total performance of the wheelchair.
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30
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Baldwin SB, Djambazov B, Papenfuss M, Abrahamsen M, Denman C, Guernsey de Zapien J, Ortega L, Navarro Henze JL, Hunter J, Rojas M, García F, Giuliano AR. Chlamydial infection in women along the US–Mexico border. Int J STD AIDS 2016; 15:815-21. [PMID: 15601488 DOI: 10.1258/0956462042563792] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 11/18/2022]
Abstract
Few studies have reported on sexually transmitted infections at the US–Mexico border, so the prevalence of Chlamydia trachomatis in this population remains uncertain. This binational project investigated the prevalence of, and risk factors for, C. trachomatis among women along the Arizona, US–Sonora, Mexico border. Women who self-referred for routine gynaecological care were invited to complete an interviewer-administered questionnaire and to undergo a Pap smear, C. trachomatis test, and HPV test. In 2270 women, C. trachomatis prevalence overall was 8.2% as measured by hybrid capture and 2.6% by enzyme immunoassay. Infection was associated with young age, a history of new sexual partner(s) in the previous three months, HPV infection, and proximity of clinic to the international border. Antibiotic use in the previous 30 days was associated with decreased odds of infection. Women in Arizona–Sonora border communities are at increased risk for C. trachomatis infection compared to women attending clinics in non-border locations.
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Affiliation(s)
- S B Baldwin
- Veterans Health Administration of Greater Los Angeles, Sepulveda Ambulatory Care Center, 16111 Plummer St, Sepulveda, CA, USA.
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31
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Srur E, Toro P, Leiva M, Rojas M, Contreras N. Tratamiento transdisciplinario del linfedema mediante terapia físico-combinada compleja. Análisis de nuestra experiencia. Angiología 2016. [DOI: 10.1016/j.angio.2015.04.008] [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]
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32
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Katina S, McNeil K, Ayoub A, Guilfoyle B, Khambay B, Siebert P, Sukno F, Rojas M, Vittert L, Waddington J, Whelan PF, Bowman AW. The definitions of three-dimensional landmarks on the human face: an interdisciplinary view. J Anat 2015; 228:355-65. [PMID: 26659272 PMCID: PMC4832301 DOI: 10.1111/joa.12407] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2015] [Indexed: 11/29/2022] Open
Abstract
The analysis of shape is a key part of anatomical research and in the large majority of cases landmarks provide a standard starting point. However, while the technology of image capture has developed rapidly and in particular three‐dimensional imaging is widely available, the definitions of anatomical landmarks remain rooted in their two‐dimensional origins. In the important case of the human face, standard definitions often require careful orientation of the subject. This paper considers the definitions of facial landmarks from an interdisciplinary perspective, including biological and clinical motivations, issues associated with imaging and subsequent analysis, and the mathematical definition of surface shape using differential geometry. This last perspective provides a route to definitions of landmarks based on surface curvature, often making use of ridge and valley curves, which is genuinely three‐dimensional and is independent of orientation. Specific definitions based on curvature are proposed. These are evaluated, along with traditional definitions, in a study that uses a hierarchical (random effects) model to estimate the error variation that is present at several different levels within the image capture process. The estimates of variation at these different levels are of interest in their own right but, in addition, evidence is provided that variation is reduced at the observer level when the new landmark definitions are used.
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Affiliation(s)
- Stanislav Katina
- Institute of Mathematics and Statistics, Masaryk University, Brno, Czech Republic.,School of Mathematics and Statistics, The University of Glasgow, Glasgow, UK
| | - Kathryn McNeil
- School of Mathematics and Statistics, The University of Glasgow, Glasgow, UK
| | - Ashraf Ayoub
- College of MVLS, School of Medicine, Dental School, The University of Glasgow, Glasgow, UK
| | | | | | - Paul Siebert
- School of Computing Science, The University of Glasgow, Glasgow, UK
| | - Federico Sukno
- Department of Information and Communication Technologies, Pompeu Fabra University, Barcelona, Spain
| | - Mario Rojas
- Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland.,Centre for Image Processing and Analysis, Dublin City University, Dublin, Ireland
| | - Liberty Vittert
- School of Mathematics and Statistics, The University of Glasgow, Glasgow, UK
| | - John Waddington
- Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Paul F Whelan
- Centre for Image Processing and Analysis, Dublin City University, Dublin, Ireland
| | - Adrian W Bowman
- School of Mathematics and Statistics, The University of Glasgow, Glasgow, UK
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33
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Troncoso M, Santander P, Balut F, Barrios A, Faure F, Vergara D, Troncoso L, Rojas M, Galleguillos C. Clinical phenotype, genetic and imaging features in vanishing white matter disease/cach. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.09.072] [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]
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34
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Santos N, Mendes GS, Silva RC, Pena GA, Rojas M, Amorim AR, Lima DP. Salivirus and aichivirus A infections in children with gastroenteritis in Brazil. Clin Microbiol Infect 2015; 21:799.e1-3. [PMID: 25889358 DOI: 10.1016/j.cmi.2015.04.004] [Citation(s) in RCA: 12] [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: 03/25/2015] [Accepted: 04/07/2015] [Indexed: 10/23/2022]
Abstract
Stool samples were obtained from healthy children and children with diarrhoea in Rio de Janeiro, Brazil, and analysed for aichivirus A and salivirus by reverse transcription PCR. Aichivirus A was detected in 5 (0.8%) and salivirus in 10 (1.7%) of the samples obtained from children with diarrhoea. None of the healthy children tested positive for these viruses. The results demonstrate that these viruses continuously circulate in the country, although at a low frequency.
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Affiliation(s)
- N Santos
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
| | - G S Mendes
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - R C Silva
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - G A Pena
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - M Rojas
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - A R Amorim
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - D P Lima
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Affiliation(s)
- G. F. Gonzales
- Facultad de Ciencias y Filosofía; Universidad Peruana Cayetano Heredia; Lima Perú
| | - R. Sanchez
- Center of Biotechnology in Reproduction (BIOREN-CEBIOR); Faculty of Medicine; Universidad de La Frontera; Temuco Chile
| | - M. Rojas
- Programa de Anatomìa y Biología del Desarrollo; ICBM; Facultad de Medicina; Universidad de Chile; Santiago de Chile Chile
| | - R. Henkel
- Department of Medical Bioscience; University of the Western Cape; Bellville South Africa
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Burbano C, Vasquez G, Rojas M. Modulatory Effects of CD14+CD16++ Monocytes on CD14++CD16− Monocytes: A Possible Explanation of Monocyte Alterations in Systemic Lupus Erythematosus. Arthritis Rheumatol 2014; 66:3371-81. [DOI: 10.1002/art.38860] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 08/21/2014] [Indexed: 12/23/2022]
Affiliation(s)
- C. Burbano
- University of Antioquia, Medellín; Antioquia Colombia
| | - G. Vasquez
- University of Antioquia, Medellín; Antioquia Colombia
| | - M. Rojas
- University of Antioquia, Medellín; Antioquia Colombia
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Rincón D, Foguet A, Rojas M, Segarra E, Sacristán E, Teixidor R, Ortega A. Time of cord clamping and neonatal complications, a prospective study. An Pediatr (Barc) 2014. [DOI: 10.1016/j.anpede.2013.10.009] [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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Rincón D, Foguet A, Rojas M, Segarra E, Sacristán E, Teixidor R, Ortega A. Tiempo de pinzamiento del cordón umbilical y complicaciones neonatales, un estudio prospectivo. An Pediatr (Barc) 2014; 81:142-8. [DOI: 10.1016/j.anpedi.2013.10.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 10/04/2013] [Accepted: 10/28/2013] [Indexed: 11/29/2022] Open
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Meruane M, Benítez S, Rojas M, Sagredo A, Marcelain K, Villalobos B. Epitelización inducida por células troncales derivadas del tejido adiposo. Cir plást iberolatinoam 2014. [DOI: 10.4321/s0376-78922014000200001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Ting A, Lehman N, Cardenes N, Kocyildirim E, Romagnoli M, Mroz L, Carceres E, Tedrow J, Bermudez C, Rojas M. The use of human bone marrow stem cells reduces endotoxin-induced lung injury in sheep. Cytotherapy 2014. [DOI: 10.1016/j.jcyt.2014.01.306] [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]
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Carrasco N, Rojas M, Aceituno P, Andree KB, Lacuesta B, Furones MD. Perkinsus chesapeaki observed in a new host, the European common edible cockle Cerastoderma edule, in the Spanish Mediterranean coast. J Invertebr Pathol 2014; 117:56-60. [PMID: 24525498 DOI: 10.1016/j.jip.2014.01.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [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: 07/24/2013] [Revised: 01/30/2014] [Accepted: 01/31/2014] [Indexed: 10/25/2022]
Abstract
Histological observations showed the presence of a Perkinsus sp. parasite in Cerastoderma edule tissues for the first time in the Spanish Mediterranean coast. ITS molecular characterization by PCR-RFLP, in situ hybridization and sequencing, identified the parasite as Perkinsus chesapeaki, with a maximum identity of 99-100% with GenBank P. chesapeaki sequences from France and 97% with P. chesapeaki sequences of North American origin when BLAST analysis was carried out. Furthermore, phylogenetic studies placed the European cockle parasite in a well defined cluster together with the other European isolates. This is the first report of P. chesapeaki in the cockle C. edule.
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Affiliation(s)
- N Carrasco
- IRTA, Sant Carles de la Ràpita, Ctra. Poblenou Km 5, 43540 Tarragona, Spain; Catalonia's Aquaculture R&D and Innovation Reference Network (XRAq), Spain.
| | - M Rojas
- IRTA, Sant Carles de la Ràpita, Ctra. Poblenou Km 5, 43540 Tarragona, Spain
| | - P Aceituno
- IRTA, Sant Carles de la Ràpita, Ctra. Poblenou Km 5, 43540 Tarragona, Spain
| | - K B Andree
- IRTA, Sant Carles de la Ràpita, Ctra. Poblenou Km 5, 43540 Tarragona, Spain; Catalonia's Aquaculture R&D and Innovation Reference Network (XRAq), Spain
| | - B Lacuesta
- IRTA, Sant Carles de la Ràpita, Ctra. Poblenou Km 5, 43540 Tarragona, Spain; Catalonia's Aquaculture R&D and Innovation Reference Network (XRAq), Spain
| | - M D Furones
- IRTA, Sant Carles de la Ràpita, Ctra. Poblenou Km 5, 43540 Tarragona, Spain; Catalonia's Aquaculture R&D and Innovation Reference Network (XRAq), Spain
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Gonzalez Florez HA, Rojas M, Quiroz J, Mancera Y. Abnormalities in cancer patients' coagulation system. J Clin Oncol 2013. [DOI: 10.1200/jco.2013.31.15_suppl.e22207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e22207 Background: It is well known cancer patients may present both hemorrhagic and thrombotic abnormalities and these phenomena are difficult to diagnose and treat. Thrombotic phenomena are developed clinicly in 15% in cancer patients and it’s higher in adenocarcinomas and myeloprolipherative disorders. These complications can be the consequence of coagulations factor direct activation or chronic DIC, because of the acquired capacity of neoplastic cells for starting coagulation cascade. Methods: In this study an untreated cancer patients group were compared with another healthy controls group, older than 14 years. Patients before treatment and controls were laboratory tested. A t – test for independent samples was employed. Results: Number: patients group: 66, control group: 73. Median age: patients: 50 (17-78). Controls: 52 (18 -93). Sex: Patients: men: 35%, women: 65%. Controls: men: 52%, women: 48%. Malignancies: breast cancer 9.7%; gastric carcinoma 8.1%; cervical carcinoma 6.5%; NH lymphomas 6.5%, unknown origen metastatic carcinoma 4.8%; oral carcinoma 4.8%. Clinical stages: I: 6.3%; II: 6.3%; III: 22.9%; IV: 62.5% (metastatic) 47.9%. Thrombotic antecedents in patients group: 19.7%. There were significant differences in: Platelets count: patients: 281121, controls: 307745 (p<0.001). Protein C: 0.87 and 3.81 UI/mL, respectively (p < 0.001). Antithrombin III: 97 and 101% (p<0.001). Plasminogen: 92.9 and 101.1% (p < 0.001). Lupus anticoagulant (RVV time): 27 and 25.6” (p<0.001). There were no significant differences in PT: 18.3 and 16.9” and PTT: 31 and 34”. The same significant differences were got when the patients of every clinical stage were compared with control patients. There were no differences when the patients of every clinical stage were compared among themselves, nor between sex. Conclusions: This study shows cancer patients may have many coagulation abnormalities: anticoagulant system defects and fibrinolytic system hipoactivity, demonstrated by the significant differences found in antithrombin III, protein C and plasminogen levels between patients and controls groups. It is suggested to practice these tests to cancer patients, even without clinical coagulation disorders, to stablish prophylactic measures.
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Affiliation(s)
| | - M. Rojas
- Colombia National Cancer Institute, Ibague, Colombia
| | - J. Quiroz
- Colombia National University, Ibague, Colombia
| | - Y. Mancera
- Bogota Jorge Tadeo Lozano University, Bogota, Colombia
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Rojas M, González I, De la Cruz S, Hernández P, García T, Martín R. Corrigendum to ‘Application of species-specific polymerase chain reaction assays to verify the labeling of quail (Coturnix coturnix), pheasant (Phasianus colchicus) and ostrich (Struthio camelus) in pet foods’ [Anim. Feed Sci. Technol. 169 1–2 (2011) 128–133]. Anim Feed Sci Technol 2013. [DOI: 10.1016/j.anifeedsci.2013.01.001] [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: 11/16/2022]
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Elms SC, Toque HA, Rojas M, Xu Z, Caldwell RW, Caldwell RB. The role of arginase I in diabetes-induced retinal vascular dysfunction in mouse and rat models of diabetes. Diabetologia 2013; 56:654-62. [PMID: 23232640 PMCID: PMC3565067 DOI: 10.1007/s00125-012-2789-5] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [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] [Received: 09/20/2012] [Accepted: 11/07/2012] [Indexed: 10/27/2022]
Abstract
AIMS/HYPOTHESIS A reduction in retinal blood flow occurs early in diabetes and is likely to be involved in the development of diabetic retinopathy. We hypothesise that activation of the arginase pathway could have a role in the vascular dysfunction of diabetic retinopathy. METHODS Experiments were performed using a mouse and rat model of streptozotocin (STZ)-induced diabetes for in vivo and ex vivo analysis of retinal vascular function. For in vivo studies, mice were infused with the endothelial-dependent vasodilator acetylcholine (ACh) or the endothelial-independent vasodilator sodium nitroprusside (SNP), and vasodilation was assessed using a fundus microscope. Ex vivo assays included pressurised vessel myography, western blotting and arginase activity measurements. RESULTS ACh-induced retinal vasodilation was markedly impaired in diabetic mice (40% of control values), whereas SNP-induced dilation was not altered. The diabetes-induced vascular dysfunction was markedly blunted in mice lacking one copy of the gene encoding arginase I and in mice treated with the arginase inhibitor 2(S)-amino-6-boronohexanoic acid. Ex vivo studies performed using pressure myography and central retinal arteries isolated from rats with STZ-induced diabetes showed a similar impairment of endothelial-dependent vasodilation that was partially blunted by pretreatment of the isolated vessels with another arginase inhibitor, (S)-2-boronoethyl-L-cysteine. The diabetes-induced vascular alterations were associated with significant increases in both arginase I protein levels and total arginase activity. CONCLUSIONS/INTERPRETATION These results indicate that, in the mouse and rat model, diabetes-induced increases in arginase I were involved in the diabetes-induced impairment of retinal blood flow by a mechanism involving vascular endothelial cell dysfunction.
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Affiliation(s)
- S C Elms
- Vascular Biology Center, Georgia Health Sciences University, 1459 Laney Walker Boulevard, Augusta, GA 30912, USA
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Hoskins KF, Anderson EE, Tejedo S, Stolley M, Van de Wydeven K, Korah V, Moreno L, Rojas M, Carillo A, Caseras M, Awolala Y, Calhoun E, Campbell R, Warnecke R. Abstract P5-13-03: Breast cancer risk assessment for underserved minority women in primary care: patient and provider perspectives. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p5-13-03] [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
Background: Individualized breast cancer risk assessment can identify women at increased risk who are candidates for interventions with proven benefit, including chemoprevention, enhanced surveillance, genetic testing and risk-reducing surgery. Systematic risk assessment and prescription of individualized, risk-adapted cancer control recommendations provides a novel method for addressing cancer disparities in underserved minority women. Widespread dissemination of these approaches requires implementation in the primary care setting.
Purpose: to determine potential benefits and harms of a policy for routinely providing personalized breast cancer risk assessment for underserved minority women from the perspectives of patients and primary care providers (PCPs), and to explore ethical implications of breast cancer risk communication in this patient population.
Methods: African American and Hispanic women age 25–69 years without a history of breast cancer, presenting for a routine scheduled appointment with their primary provider at a Federally Qualified Health Center were invited to participate in a study on women's views about breast cancer risk. Breast cancer risk factor data was collected from all participants and individualized risk assessments were performed using three models (NCI BCRAT, Claus model and a pedigree assessment tool). PCPs discussed the results of the assessment with their patients and provided computer-generated, risk-adapted recommendations for screening and prevention that are based on national guidelines. Using a mixed methods approach, we collected quantitative survey data from participants at baseline (prior to receipt of risk information), immediately following the encounter with their PCP and two weeks later. We also used qualitative approaches in a subgroup of participants from each of three risk strata (general population risk, moderately-increased and high risk) including audio-recorded observational data from physician-patient interactions and in-depth interviews with patients and physicians in order to evaluate how women process risk information and make decisions regarding how to act on that information. Data collected broadly focused on the following topics: Interpretation and initial reaction to the personalized risk information provided by the PCPWhat it means to be “at (baseline, moderate, high) risk”Views on value of/potential benefits and harms of personalized risk informationLevel of trust in the informationPreferences regarding recommended surveillance strategies and risk reduction strategies (for moderate and high risk groups)Preferences regarding shared decision makingFuture plans/action steps based on personalized risk informationPerceptions of the manner that personalized risk information was presented to them by their PCP
Results: We are planning to enroll 480 participants for the quantitative survey portion and 48 participants for in-depth qualitative data collection, including audio-recorded patient-physician interactions and in-depth patient interviews, along with 8 in-depth provider interviews. Data collection is ongoing and results will be presented.
Acknowledgement: This research was supported by a grant from the National Cancer Institute (2P50CA106743)
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P5-13-03.
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Affiliation(s)
- KF Hoskins
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
| | - EE Anderson
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
| | - S Tejedo
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
| | - M Stolley
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
| | - K Van de Wydeven
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
| | - V Korah
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
| | - L Moreno
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
| | - M Rojas
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
| | - A Carillo
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
| | - M Caseras
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
| | - Y Awolala
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
| | - E Calhoun
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
| | - R Campbell
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
| | - R Warnecke
- The University of Illinois Hospital and Health Sciences System, Chicago, IL; The University of Illinois at Chicago School of Public Health, Chicago, IL; OSF Saint Anthony Medical Center, Rockford, IL; Loyola University Medical Center, Maywood, IL; Chicago Family Health Center, Chicago, IL
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Rojas M, Rojas O, de Souza SM. Frustrated Ising model on the Cairo pentagonal lattice. Phys Rev E Stat Nonlin Soft Matter Phys 2012; 86:051116. [PMID: 23214747 DOI: 10.1103/physreve.86.051116] [Citation(s) in RCA: 3] [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] [Received: 05/25/2011] [Indexed: 06/01/2023]
Abstract
Through the direct decoration transformation approach, we obtain a general solution for the pentagonal Ising model, showing its equivalence to the isotropic free-fermion eight-vertex model. We study the ground-state phase diagram, in which one ferromagnetic (FM) state, one ferrimagnetic (FIM) state, and one frustrated state are found. Using the exact solution of the pentagonal Ising model, we discuss the finite-temperature phase diagrams and find a phase transition between the FIM state and the disordered state as well as a phase transition between the disordered state and the FM state. We also discuss some additional remarkable properties of the model, such as the magnetization, entropy, and specific heat, at finite temperature and at its low-temperature asymptotic limit. Because of the influence of the second-order phase transition between the frustrated and ferromagnetic phases, we obtain surprisingly low values of the entropy and the specific heat until the critical temperature is reached.
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Affiliation(s)
- M Rojas
- Departamento de Ciencias Exatas, Universidade Federal de Lavras, CP 3037, 37200-000 Lavras, Minas Gerais, Brazil
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Gil-Villa AM, Norling LV, Serhan CN, Cordero D, Rojas M, Cadavid A. Aspirin triggered-lipoxin A4 reduces the adhesion of human polymorphonuclear neutrophils to endothelial cells initiated by preeclamptic plasma. Prostaglandins Leukot Essent Fatty Acids 2012; 87:127-34. [PMID: 22974760 PMCID: PMC3495183 DOI: 10.1016/j.plefa.2012.08.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [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] [Received: 04/11/2012] [Revised: 07/26/2012] [Accepted: 08/10/2012] [Indexed: 01/27/2023]
Abstract
INTRODUCTION Preeclampsia is a disorder of pregnancy, characterized by hypertension and proteinuria after 20 weeks of gestation. Here, we evaluated the role of aspirin triggered-lipoxin A(4) (ATL, 15-epi-LXA(4)) on the modulation of the adhesion of human polymorphonuclear neutrophils (PMN) to endothelial cells initiated by preeclamptic plasma. MATERIALS AND METHODS Plasma from preeclamptic, normotensive pregnant, and non-pregnant women were analyzed for factors involved in regulating angiogenesis, inflammation and lipid peroxidation. Plasma from preeclamptic women was added to human umbilical vein endothelial cells, and the adhesion of PMN (incubated with or without ATL) to cells was evaluated. RESULTS Preeclampsia was associated with some augmented anti-angiogenic, oxidative and pro-inflammatory markers, as well as increasing human PMN-endothelial cell adhesion. This cell adhesion was reduced when human PMN were incubated with ATL prior to addition to endothelial monolayers. DISCUSSIONS AND CONCLUSIONS Our results are the starting point for further research on the efficacy and rational use of aspirin in preeclampsia.
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Affiliation(s)
- A M Gil-Villa
- Grupo Reproducción, Facultad de Medicina. Universidad de Antioquia. Medellín, Colombia.
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Rose J, Seraj H, Huseby D, Rojas M, Hill H, Carlson N. Gender Based Differences in Clinical and MRI Outcomes in Multiple Sclerosis with Low Vitamin D (S50.004). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.s50.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Shu H, Yoon Y, Hong S, Gao H, Xu K, Liang Z, Hao C, Rojas M, Shim H. CXCR4/SDF-1 Axis Blockade Reduces Radiation-induced Pulmonary Fibrosis. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.348] [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: 10/16/2022]
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Faúndez M, Rojas M, Bohle P, Reyes C, Letelier ME, Aliaga ME, Speisky H, Lissi E, López-Alarcón C. Pyrogallol red oxidation induced by superoxide radicals: application to evaluate redox cycling of nitro compounds. Anal Biochem 2011; 419:284-91. [PMID: 21945352 DOI: 10.1016/j.ab.2011.08.048] [Citation(s) in RCA: 14] [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] [Received: 07/05/2011] [Revised: 08/25/2011] [Accepted: 08/27/2011] [Indexed: 11/30/2022]
Abstract
The bleaching of the pyrogallol red (PGR) dye mediated by superoxide anion radicals (O(2)(-)) generated from the xanthine/xanthine oxidase system (X/XO) was studied by UV-visible spectrophotometry. The absorption band (at 540 nm) of PGR quickly decreased in the presence of X/XO, implying an efficient reaction of O(2)(-) with PGR. The process was unaffected by catalase (CAT), but completely abolished by superoxide dismutase (SOD). A mechanism of the reaction involving the consumption of one PGR molecule by two O(2)(-) to generate one molecule of H(2)O(2) is proposed. PGR was used as a probe to estimate the rate of O(2)(-) generation in redox cycling reactions of a series of nitro compounds mediated by rat liver microsomes. The consumption of PGR induced by the redox cycling of nitrofurantoin was totally eliminated by the addition of SOD but unaffected by CAT. The initial rate of consumption of PGR mediated by the redox cycling of others nitro derivatives follows the order: furazolidindione > nitrofurantoin > nifurtimox > benznidazole > chloramphenicol. We concluded that PGR can be used as a probe to estimate the release of O(2)(-) from enzymatic systems or from the redox cycling of nitro compounds.
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Affiliation(s)
- M Faúndez
- Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, CP 782 0436, Santiago, Chile
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