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Mendez E, Munguia L, Ramirez Molina R, Herrera C, Regino L, Tellez M, Sandoval V, Perez J, Medina D, Vasquez C, Page-Reeves J. Our voices, our lives: Unforeseen stories after the violence and opening the door to becoming whole again. Womens Health (Lond) 2023; 19:17455057231197159. [PMID: 37727110 PMCID: PMC10515508 DOI: 10.1177/17455057231197159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/18/2023] [Accepted: 08/08/2023] [Indexed: 09/21/2023]
Abstract
We are a group of 11 women in Albuquerque, New Mexico. Nine of us are immigrants from Mexico. One of us is from an immigrant household. One of us is neither. We have been working collaboratively on a research study called Tertulias (Spanish for "a social gathering"), which is an innovative women's peer support group approach we created to reduce social isolation, depression, and stress among women immigrants from Mexico, and to increase their resilience and sense of empowerment. In the process of implementing the Tertulias study, we are revealing the profound power of peer support, friendship, and small, quotidian kindnesses. But we are also exposing the immensity and scope of trauma, fear, loneliness, depression, and self-blame that exist in the Mexican immigrant community because of domestic violence. Our experience with domestic violence and with the consciousness-raising and support we found in Tertulias has made us want to be involved in a positive manner to do something about this issue in our community. We want our experience to mean something-to be used to make a difference. We are opening our hearts and sharing our stories and ideas. We wanted to be included as co-authors of this article because we want our stories to be received and heard by other women. We want to plant seeds to help other women find their inner strength to be able to escape from their chains. We have to return for others. It is a commitment-to understand how we were able to do it and share that with others. Through our experience participating in Tertulias, we learned that we could overcome what felt overwhelming and impenetrable. We could leave the violence and rediscover and recreate ourselves and our lives.
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Affiliation(s)
- Ernestina Mendez
- The University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Leticia Munguia
- The University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | | | - Cristina Herrera
- The University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Lidia Regino
- The University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Maria Tellez
- The University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Virginia Sandoval
- The University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Jackie Perez
- The University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Dulce Medina
- The University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Camille Vasquez
- The University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Janet Page-Reeves
- The University of New Mexico Health Sciences Center, Albuquerque, NM, USA
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Rodriguez L, Murray-Krezan C, Regino L, Tellez M, Vasquez C, Sandoval V, Perez Rodriguez D, Pedigo B, Page-Reeves J. A Study of a Culturally and Contextually Situated Multimedia Approach to Recruit a Hard-to-Reach Spanish-Speaking Population for a Randomized Control Trial (RCT). J Empir Res Hum Res Ethics 2022; 17:461-470. [PMID: 35585705 DOI: 10.1177/15562646221102682] [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] [Indexed: 11/16/2022]
Abstract
Study designs involving randomization can be difficult to communicate to participants, especially those with low literacy. The literature on strategies to explain research concepts is limited, especially for non-English speakers. We measured the effectiveness of a culturally and contextually situated multimedia approach to recruit a cohort of 60 female Mexican immigrants (FMI) to a randomized control trial (RCT) to reduce social isolation and depression. This strategy was designed to explain the concept of randomization, explain what participating in the research study entailed, and ensure informed consent. Potential participants viewed a presentation explaining the study and a video including animation with voice-over explaining the concept of randomization. We administered a pre/post survey. Respondents (N = 59) reported an increase in their understanding of randomization, intention to enroll, and attitude towards participating in research. We conclude that a culturally and contextually situated multimedia approach is an effective model when recruiting underrepresented populations with low literacy for RCTs.
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Affiliation(s)
- Larimar Rodriguez
- 12288University of New Mexico School of Medicine, Albuquerque, NM, USA
| | | | - Lidia Regino
- Office for Community Health, University of New Mexico, Albuquerque, NM, USA
| | - Maria Tellez
- One Hope Centro de Vida Health Center, East Central Ministries, Albuquerque, NM, USA
| | | | - Virginia Sandoval
- One Hope Centro de Vida Health Center, East Central Ministries, Albuquerque, NM, USA
| | | | - Blanca Pedigo
- One Hope Centro de Vida Health Center, East Central Ministries, Albuquerque, NM, USA
| | - Janet Page-Reeves
- Office for Community Health, University of New Mexico, Albuquerque, NM, USA.,Department of Family and Community Medicine, University of New Mexico, Albuquerque, NM, USA
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Juza RM, Docimo S, Drexel S, Sandoval V, Marks JM, Pauli EM. Endoscopic rescue of early percutaneous endoscopy gastrostomy tube dislodgement. Surg Endosc 2021; 35:1915-1920. [PMID: 33398579 DOI: 10.1007/s00464-020-08203-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/19/2020] [Indexed: 01/14/2023]
Abstract
BACKGROUND Percutaneous endoscopic gastrostomy (PEG) tube placement is one of the most common methods for establishing durable enteral access. Early PEG dislodgement occurs in < 5% of cases but typically prompts urgent surgical intervention to reestablish the gastrocutaneous tract and prevent intra-abdominal sepsis. To date, there is a single case report in the literature where successful endoscopic "rescue" of an early dislodged PEG tube negated the need for operative intervention. Here, we report our experience with a series of endoscopic PEG rescues for early dislodged PEG tubes. METHODS A retrospective analysis of cases was reviewed from two institutions. Patients with early PEG dislodgements underwent PEG rescue using a gastroscope and standard Ponsky "Pull" PEG techniques through the original tract. RESULTS Eleven patients were identified from the database and underwent PEG rescue after early PEG dislodgement. Mean operative time was 68 min, and there were no complications related to PEG rescue. PEG rescue permitted safe re-establishment of the gastrostomy tract while avoiding laparoscopic or open surgical intervention in hemodynamically stable patients. All patients tolerated the procedure well and were able to resume use of the PEG tubes shortly after intervention. CONCLUSION Endoscopic rescue represents a feasible noninvasive option for PEG tube replacement following early inadvertent PEG tube dislodgement in appropriate clinical settings.
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Affiliation(s)
- R M Juza
- Division of General Surgery, Department of Surgery, University Hospitals, Cleveland Medical Center, Cleveland, OH, USA.
| | - S Docimo
- Division of Bariatric, Foregut, and Advanced Gastrointestinal Surgery, Department of Surgery, Stony Brook Medicine, Stony Brook, NY, USA
| | - S Drexel
- Division of General Surgery, Department of Surgery, University Hospitals, Cleveland Medical Center, Cleveland, OH, USA
| | | | - J M Marks
- Division of General Surgery, Department of Surgery, University Hospitals, Cleveland Medical Center, Cleveland, OH, USA
| | - E M Pauli
- Division of Minimally Invasive and Bariatric Surgery, Department of Surgery, Penn State Hershey Medical Center, Hershey, PA, USA
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Barcia E, Sandoval V, Fernandez-Carballido A, Negro S. Flunarizine-loaded microparticles for the prophylaxis of migraine. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.102012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Olmos LH, Colque Caro LA, Avellaneda-Cáceres A, Medina DM, Sandoval V, Aguirre DH, Micheloud JF. First record of clinical coccidiosis (Eimeria ovinoidalis) in adult sheep from northwestern Argentina. Vet Parasitol Reg Stud Reports 2020; 21:100429. [PMID: 32862909 DOI: 10.1016/j.vprsr.2020.100429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 06/24/2020] [Accepted: 06/27/2020] [Indexed: 11/16/2022]
Abstract
Coccidiosis of sheep is an intestinal infection caused by protozoa of the genus Eimeria. An outbreak of the disease in adult sheep from Salta province, northwestern Argentina, was studied to establish its clinical, epidemiological, pathological and etiological aspects. The affected animals were part of a flock of 20 sheep brought from Formosa province about 10 days before. Most sheep (80% incidence) showed hemorrhagic diarrhea, dehydration and loss of body condition; six of them died and two that became permanently recumbent were euthanized. Three necropsied sheep showed mild mesenteric lymphadenomegaly, diffuse proliferative enteritis in the small and large intestines, and mucosal thickening. Histopathological studies exhibited diffuse proliferative enteritis and presence of structures compatible with intracellular coccidia at different stages of development. Parasitological studies (n = 12) resulted in an average of 16,636.6 (± 15,266.8) Eimeria oocysts per gram of feces (range 1680-46,400). Taxonomy of Eimeria species based on analysis of sporulated oocysts derived from 4 fecal samples (n = 100 oocyst per sample) showed, on average, a high prevalence of E. ovinoidalis (61.5%), followed by E. parva (27.2%), and lower proportions of E. crandallis (5.3%), E. ahsata (3.2%) and E. intricata (2.8%). Clinical and pathological findings confirmed the diagnosis of coccidiosis in the affected sheep; parasitological results showed that E. ovinoidalis was the main species responsible for the clinical signs. Clinical coccidiosis is considered unusual in adult sheep, but the present case shows that under favorable environmental and/or management conditions, this infection may be highly deleterious for adult sheep.
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Affiliation(s)
- L H Olmos
- Instituto Nacional de Tecnología Agropecuaria (INTA), CIAP, Instituto de Investigación Animal del Chaco Semiárido, Área de Investigación en Salud Animal, EEA Salta, Salta, Argentina; Facultad de Ciencias Agrarias y Veterinarias, Universidad Católica de Salta, Argentina.
| | - L A Colque Caro
- Instituto Nacional de Tecnología Agropecuaria (INTA), CIAP, Instituto de Investigación Animal del Chaco Semiárido, Área de Investigación en Salud Animal, EEA Salta, Salta, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), EEA Salta, Salta, Argentina
| | - A Avellaneda-Cáceres
- Facultad de Ciencias Agrarias y Veterinarias, Universidad Católica de Salta, Argentina
| | - D M Medina
- Facultad de Ciencias Agrarias y Veterinarias, Universidad Católica de Salta, Argentina
| | - V Sandoval
- Facultad de Ciencias Agrarias y Veterinarias, Universidad Católica de Salta, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), EEA Salta, Salta, Argentina
| | - D H Aguirre
- Instituto Nacional de Tecnología Agropecuaria (INTA), CIAP, Instituto de Investigación Animal del Chaco Semiárido, Área de Investigación en Salud Animal, EEA Salta, Salta, Argentina
| | - J F Micheloud
- Instituto Nacional de Tecnología Agropecuaria (INTA), CIAP, Instituto de Investigación Animal del Chaco Semiárido, Área de Investigación en Salud Animal, EEA Salta, Salta, Argentina; Facultad de Ciencias Agrarias y Veterinarias, Universidad Católica de Salta, Argentina
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McGrew HC, Regino L, Bleecker M, Tellez M, Pedigo B, Guerrero D, Sandoval V, Varela L, Page-Reeves J. Training Patient Stakeholders Builds Community Capacity, Enhances Patient Engagement in Research. J Community Engagem Scholarsh 2020; 13:99-106. [PMID: 33927800 PMCID: PMC8081393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Our philosophical framework for research with low-income Latino patients with diabetes prioritizes hiring research staff who share the culture and language of the population of study. Inclusive research design requires an active role by patient stakeholders with training opportunities in a collaborative learning environment to allow patient stakeholder data collectors (PSDCs) to build on existing strengths and expertise. To develop this manuscript, our team reflected on our collective experiences in implementing research-specific trainings for PSDCs. Although our population of study is known to be difficult to recruit and retain, our PSDCs have successfully enrolled participants on schedule, and attrition is low. Although language, institutional requirements, and funding restrictions presented training challenges, we overcame these by using a flexible approach and by incorporating the data collectors' expertise in refining our protocols. We propose that our success in recruiting and retaining participants is a reflection of our engaged research strategy and framework and demonstrates that engagement promotes better science. However, our experience also demonstrates research institutions need to make policy and infrastructural improvements to reduce barriers and make engaged approaches more feasible.
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Affiliation(s)
- Hannah Cole McGrew
- dual specialty nurse-midwife and family nurse practitioner student at the University of New Mexico
| | - Lidia Regino
- program operations director in the Office for Community Health at the University of New Mexico and co-principal investigator for this project
| | - Molly Bleecker
- senior research scientist 1 in the Office for Community Health at the University of New Mexico. She was data manager for this project
| | - Maria Tellez
- patient engagement and research coordinator at One Hope Centro de Vida Health Center in Tulancingo Hidalgo, Mexico
| | - Blanca Pedigo
- project site director for One Hope Centro de Vida Health Center
| | | | | | | | - Janet Page-Reeves
- associate professor in the Department of Family & Community Medicine at the University of New Mexico
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Troitiño C, Adrover M, Calizaya G, Lares J, Durigan V, Sandoval V, Marcaida P, Scarafia S, Duarte V, Secco A, Mamani M. AB0993 Depressive Symptoms in Patients Consulting for The First Time A Rheumatology Service. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2559] [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: 11/04/2022]
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McCalmont K, Norris J, Garzon A, Cisneros R, Greene H, Regino L, Sandoval V, Gomez R, Page-Reeves J, Kaufman A. Community Health Workers and Family Medicine Resident Education: Addressing the Social Determinants of Health. Fam Med 2016; 48:260-264. [PMID: 27057603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Neither the health care system nor the training of medical residents focus sufficiently on social determinants of health. Community health workers (CHWs) are a growing presence in health care settings. Culturally and linguistically competent, typically they are from underserved communities and spend more time addressing social determinants of health than others on the health care team. However, CHWs are an infrequent presence in resident clinical training environments. The University of New Mexico Family Medicine Residency placed family medicine residents at a community clinic in Albuquerque managed by CHWs, recognizing that CHWs' collaboration with residents would enhance resident competency in multiple domains. Residents gained skills from CHWs in inter-professional teamwork, cultural proficiency in patient care, effective communication, provision of cost-conscious care, and advocating for both individual and community health. Our model recognizes the value of CHW skills and knowledge and creates a powerful rationale for greater recognition of CHW expertise and integration of CHWs as members of the care team.
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Affiliation(s)
- Kate McCalmont
- Department of Family and Community Medicine, University of New Mexico
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Rodríguez AE, Robledo C, García JL, González M, Gutiérrez NC, Hernández JA, Sandoval V, García de Coca A, Recio I, Risueño A, Martín-Núñez G, García E, Fisac R, Conde J, de Las Rivas J, Hernández JM. Identification of a novel recurrent gain on 20q13 in chronic lymphocytic leukemia by array CGH and gene expression profiling. Ann Oncol 2012; 23:2138-2146. [PMID: 22228453 DOI: 10.1093/annonc/mdr579] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023] Open
Abstract
BACKGROUND The presence of genetic changes is a hallmark of chronic lymphocytic leukemia (CLL). The most common cytogenetic abnormalities with independent prognostic significance in CLL are 13q14, ATM and TP53 deletions and trisomy 12. However, CLL displays a great genetic and biological heterogeneity. The aim of this study was to analyze the genomic imbalances in CLL cytogenetic subsets from both genomic and gene expression perspectives to identify new recurrent alterations. PATIENTS AND METHODS The genomic imbalances and expression levels of 67 patients were analyzed. The novel recurrent abnormalities detected with bacterial artificial chromosome array were confirmed by FISH and oligonucleotide microarrays. In all cases, gene expression profiling was assessed. RESULTS Copy number alterations were identified in 75% of cases. Overall, the results confirmed FISH studies for the regions frequently involved in CLL and also defined a new recurrent gain on chromosome 20q13.12, in 19% (13/67) of the CLL patients. Oligonucleotide expression correlated with the regions of loss or gain of genomic material, suggesting that the changes in gene expression are related to alterations in copy number. CONCLUSION Our study demonstrates the presence of a recurrent gain in 20q13.12 associated with overexpression of the genes located in this region, in CLL cytogenetic subgroups.
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Affiliation(s)
- A E Rodríguez
- IBMCC, Centro de Investigación del Cáncer, Universidad de Salamanca-CSIC, Salamanca
| | - C Robledo
- IBMCC, Centro de Investigación del Cáncer, Universidad de Salamanca-CSIC, Salamanca
| | - J L García
- Instituto de Estudios de Ciencias de la Salud de Castilla y León (IECSCYL)-HUSAL, Castill y León
| | - M González
- Department of Hematology, Hospital Clínico Universitario de Salamanca, Salamanca
| | - N C Gutiérrez
- Department of Hematology, Hospital Clínico Universitario de Salamanca, Salamanca
| | - J A Hernández
- Department of Hematology, Hospital Infanta Leonor, Madrid
| | - V Sandoval
- Department of Hematology, Hospital Virgen Blanca, León
| | - A García de Coca
- Department of Hematology, Hospital Clínico Universitario, Valladolid
| | - I Recio
- Department of Hematology, Hospital Nuestra Señora de Sonsoles, Ávila
| | - A Risueño
- Bioinformatics and Functional Genomics, Centro de Investigación del Cáncer, Universidad de Salamanca-CSIC, Salamanca
| | - G Martín-Núñez
- Department of Hematology, Hospital Virgen del Puerto, Plasencia
| | - E García
- Genomics and Proteomics Unit, Centro de Investigación del Cáncer, Universidad de Salamanca-CSIC, Salamanca
| | - R Fisac
- Department of Hematology, Hospital General de Segovia, Segovia
| | - J Conde
- Department of Hematology, Hospital del Río Hortega, Valladolid, Spain
| | - J de Las Rivas
- Bioinformatics and Functional Genomics, Centro de Investigación del Cáncer, Universidad de Salamanca-CSIC, Salamanca
| | - J M Hernández
- IBMCC, Centro de Investigación del Cáncer, Universidad de Salamanca-CSIC, Salamanca; Department of Hematology, Hospital Clínico Universitario de Salamanca, Salamanca.
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Julia A, Kovaleva L, Loria S, Alberca I, Hernandez F, Sandoval V, Sierra J, Vidaller A, Ayguasanosa J, Carretero M. Clinical efficacy and safety of Flebogammadif®, a new high-purity human intravenous immunoglobulin, in adult patients with chronic idiopathic thrombocytopenic purpura. Transfus Med 2009; 19:260-8. [DOI: 10.1111/j.1365-3148.2009.00945.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tejada J, Hernández-Echebarría L, Sandoval V, Mostaza JL. [Cerebral ischemia as first manifestation of paroxysmal nocturnal hemoglobinuria]. Neurologia 2007; 22:471-4. [PMID: 17853967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023] Open
Abstract
INTRODUCTION Paroxysmal nocturnal hemoglobinuria (PNH) is an acquired clonal disease characterized by chronic intravascular hemolysis, cytopenia and increased tendency to thrombosis. Arterial thrombosis has been observed in patients with PNH but is uncommon compared with venous thrombosis. Cerebral arterial thrombosis has been anecdotally described as the first clinical manifestation of PNH. CASE DESCRIPTION We present the case of a 48-yearold male who was admitted because of high-grade fever and infarction in the left middle cerebral artery territory. Other associated findings were mild anemia (hemoglobin level: 10.1 g/dl), renal ischemia and intra-abdominal venous thrombosis. Recurrent arterial and venous thromboembolic events were observed during his hospital stay. The diagnosis of PNH was confirmed by flow cytometric analysis. CONCLUSIONS PNH is a rare cause of cerebral ischemia and it should be considered in stroke patients with abnormal blood findings or marked prothrombotic tendency. We discuss the treatment guidelines and prevention of thrombotic complications.
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Affiliation(s)
- J Tejada
- Sección de Neurología, Hospital de León, Complejo Asistencial de León-Sacyl, León.
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12
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Grau J, Ribera JM, Tormo M, Indiano JM, Vercher J, Sandoval V, Ramírez G, Sastre A, Flores E, García-Conde J. [Results of treatment with 2-chlorodeoxyadenosine in refractory or relapsed Langerhans cell histiocytosis. Study of 9 patients]. Med Clin (Barc) 2001; 116:339-42. [PMID: 11333766 DOI: 10.1016/s0025-7753(01)71821-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND To analyse the results of the treatment with 2-chlorodeoxyadenosine (2CdA) in 9 patients with refractory or relapsed Langerhans cell histiocytosis (LCH) tracted in 8 Spanish hospitals between 1993 and 1999. PATIENTS AND METHOD In the 9 patients the following data were recorded: age, sex, organ involvement by LCH, first treatment and response, dose, number of cycles and schedule of administration 2CdA, response to 2CdA treatment, toxicity, disease-free survival (DFS) and overall survival (OS). RESULTS Median age was 25 years (range, 6-63). All patients had multiorganic involvement by LCH, with severe organ dysfunction in 4. 2CdA was administered as second line treatment in 7 cases and as third line in 2. The 2CdA dose was 0.1 mg/kg per day during 5 days in the majority of patients, and interval between cycles was 4 weeks. In 2 cases a complete remission (CR) was achieved and 4 cases attained a partial remission (PR) (overall response rate 66%). The main toxicity was hematologic, with neutropenia grade > 2 in 5 cases and thrombocytopenia > 2 in 5. Four patients had infections, with fatal evolution in one of them. After a median follow-up of 8 months (range 2-17), 2 patients remained in CR (12 months both), 4 in PR (range 2-12 months) and one had active disease (17 months). The other two died due to progressive disease and Aspergillus spp. sepsis, respectively. The actuarial probabilities of DFS and OS were 58% (95% CI, 38-78%) and 71% (95% CI, 54-88%), respectively. CONCLUSIONS 2CdA is an active drug for patients with refractory or relapsed LCH, and its main toxicity is myelosuppression. The usefulness of 2CdA, isolated or in combination with other drugs, in patients with refractory or relapsed LCH must be assessed in controlled studies.
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Affiliation(s)
- J Grau
- Hospital Universitari Germans Trias i Pujol. Badalona. Barcelona
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13
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Sandoval V, Riddle EL, Ugarte YV, Hanson GR, Fleckenstein AE. Methamphetamine-induced rapid and reversible changes in dopamine transporter function: an in vitro model. J Neurosci 2001; 21:1413-9. [PMID: 11160413 PMCID: PMC6762246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
This laboratory has demonstrated that a single methamphetamine (METH) injection rapidly and reversibly decreases the activity of the dopamine transporter (DAT), as assessed ex vivo in synaptosomes prepared from treated rats. This decrease does not occur because of residual drug introduced by the original injection or nor is it associated with a change in binding of the DAT ligand WIN35428. The purpose of this study was to elucidate the mechanism or mechanisms of this METH effect by determining whether direct application of this stimulant to synaptosomes causes changes in DAT similar to those observed ex vivo. Similar to the ex vivo effect, incubation of striatal synaptosomes with METH decreased DAT activity, but not WIN35428 binding: the effect on activity was not eliminated by repeated washing of synaptosomes. Also, as observed ex vivo, incubation with 3,4-methylenedioxymethamphetamine, but not cocaine or methylphenidate, caused a METH-like reduction in DAT function. The rapid and reversible METH-induced diminution in DAT activity did not occur because of a change in membrane potential, as assessed in vitro and ex vivo by [(3)H]tetraphenylphosphonium accumulation. However, the METH-related decline in DAT function may be attributed to phosphorylation because NPC15437, a protein kinase C inhibitor, attenuated the METH-induced decline in DAT function. Similarities between previously reported effects ex vivo of a single METH injection on serotonin and norepinephrine transporter function and effects of direct METH application in vitro were also found. Together, these data demonstrate that the in vitro incubation model mimics the rapid and reversible effects observed after a single METH injection.
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Affiliation(s)
- V Sandoval
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, Utah 84112, USA
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14
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Abstract
Multiple methamphetamine administrations rapidly decrease rat striatal dopamine transporter activity. To determine the species specificity of this phenomenon, the present studies examined effects of this stimulant on the dopamine transporter in mice. As in rats, multiple methamphetamine injections rapidly reduced striatal dopamine transporter activity; a decrease that was partially reversed 24 h later. Moreover, methamphetamine decreased binding of the dopamine transporter ligand, WIN35428, but to a lesser degree than the change in dopamine transporter function. These decreases did not appear to result from residual methamphetamine introduced by the original drug treatment. As in rats, hyperthermia contributed to this phenomenon. Unlike in rats, a role for dopamine was not observed in mice as dopamine depletion, resulting from alpha-methyl-p-tyrosine pretreatment, did not prevent this decrease. In addition, unlike in rats, pretreatment with either a dopamine D1 or D2 receptor antagonist (SCH23390 or eticlopride, respectively) did not attenuate the methamphetamine-induced reduction in dopamine uptake. These findings demonstrate both similarities and differences in the acute effects of methamphetamine on dopamine transporter function in mice and rats, and suggest the mouse as an additional model for assessing the acute effects of methamphetamine on the dopamine transporter.
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Affiliation(s)
- V Sandoval
- Department of Pharmacology and Toxicology, 30 S. 200 E., Rm. 201, University of Utah, Salt Lake City, UT 84112, USA
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Muñiz-Díaz E, Sandoval V, de la Calle O, Cecchini C, Gil S, Puig L, Madoz P. [Post-transfusion purpura. Description of 2 cases diagnosed at the same hospital in a 6-month period]. Sangre (Barc) 1996; 41:59-64. [PMID: 8779037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Two new cases of postransfusional purpura diagnosed at the same hospital within the space of six months are described. This finding supports the idea that despite being an infrequent disorder, a substantial rise in PTP cases inside and outside our country, has been recorded. This increase has coincided with a greater interest in platelet immunology and, particularly, in complications associated with blood transfusion. Both cases constitute an example of the clinical epidemiological profile which characterizes the patients suffering from this disorder. The patients are two women aged 74 and 60 years who after 8 and 9 days, respectively, of being transfused with red cells developed a severe thrombocytopenia accompanied by generalized haemorrhagic diathesis. The serological studies performed revealed the presence, in both patients, of an HPA-1a platelet specific antibody. The platelet genotyping enabled us to confirm this specificity after detecting an HPA-1 (a-b+) platelet genotype. The treatment with immunoglobulins at high doses proved to be effective in both cases. The adsorption-elution experiments of the antibody versus HPA-1 (a + b) platelets were positive in the patient with the highest antibody titre (1024). This finding support the most recent hypothesis concerning the pathogenic mechanism of PTP. According to this theory, the antibody, which is detected in the acute phase of the PTP, would not yet have acquired the restricted specificity corresponding to it. This could enable it to react with a structure shared by the HPA-1a positive and HPA-1a negative platelets.
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Affiliation(s)
- E Muñiz-Díaz
- Servicio de Hemoterapia, Hospital de Sant Pau, Universitat Autónoma de Barcelona
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16
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Ramos FJ, Sandoval V, Rodríguez JA, Moro MJ. [The paradox of G-CSF]. Med Clin (Barc) 1994; 102:718-9. [PMID: 7518024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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17
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Cambier J, Chen ZZ, Pasternak J, Ransom J, Sandoval V, Pickles H. Ligand-induced desensitization of B-cell membrane immunoglobulin-mediated Ca2+ mobilization and protein kinase C translocation. Proc Natl Acad Sci U S A 1988; 85:6493-7. [PMID: 3045817 PMCID: PMC281999 DOI: 10.1073/pnas.85.17.6493] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Binding of ligand to B-cell membrane immunoglobulin (mIg) can lead to activation of a number of distinct biologic responses, including altered expression of genes encoding c-fos, c-myc, and Ia, as well as proliferation and immunologic tolerance. Tolerance could reflect a functional uncoupling of receptors from systems that generate intracellular second messengers (i.e., receptor desensitization). To better understand the molecular basis of immune regulation, we examined the ability of mIg to function as a signal transducer after the cell's initial contact with mIg-binding ligand. The results show that ligand binding to as little as 2-10% of mIgM or mIgD renders the cell unresponsive to ligand binding to the reciprocal isotype as judged by Ca2+ mobilization and protein kinase C translocation responses. This heterologous receptor desensitization lasts longer than 24 hr and does not reflect loss of receptor from the cell surface. Studies with the calcium ionophore ionomycin, 1,2-dioctanoyl-sn-glycerol, and the protein kinase inhibitor staurosporine indicate that both protein kinase C-dependent and protein kinase C-independent (staurosporine-insensitive) mechanisms mediate heterologous desensitization after mIg crosslinking.
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Affiliation(s)
- J Cambier
- Department of Pediatrics, National Jewish Center for Immunology and Respiratory Medicine, Denver, CO
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18
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Sandoval V, Orea T A, Garcia ML, Vargas MA, Camacho B. [Chronic cardiac actinomycosis. Case report and review of the literature]. Arch Inst Cardiol Mex 1988; 58:243-5. [PMID: 3063224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We report the case of a young man in whom a right paracardiac mass was resected. The histopathologic study was compatible with actinomycosis. He developed severe cardiac failure, pulmonary edema and pericardial effusion. He was treated with penicillin, during 12 months. He did well afterwards, however, the echocardiographic follow-up revealed chronic pericardial effusion and thickening and fusion of the pericardium to the epicardial wall.
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Affiliation(s)
- V Sandoval
- Del Hospital Central Sur de Concentración Nacional de Petróleos Mexicanos, México, D.F
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19
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Baez RJ, Sandoval V, Hicks J, Morales F, Hanley M, Gildersleeve J. Reversible/irreversible hydrocolloid systems. Compendium 1987; 8:541-6. [PMID: 3479252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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20
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Baez RJ, Sandoval V, Hicks J, Morales F, Hanley M, Gildersleeve J. [Evaluation of crowns after impressions with a combination of reversible and irreversible hydrocolloids]. Phillip J Restaur Zahnmed 1987; 4:31-4. [PMID: 3037596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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21
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Justement L, Chen Z, Harris L, Ransom J, Sandoval V, Smith C, Rennick D, Roehm N, Cambier J. BSF1 induces membrane protein phosphorylation but not phosphoinositide metabolism, Ca2+ mobilization, protein kinase C translocation, or membrane depolarization in resting murine B lymphocytes. The Journal of Immunology 1986. [DOI: 10.4049/jimmunol.137.11.3664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
The findings presented in this study provide evidence that BSF1 receptors and mIg transmit signals via dissimilar transduction mechanisms that result in a common biologic response, hyper-Ia expression. Specifically, BSF1-containing supernatant does not induce PtdInsP2 hydrolysis as determined by measurement of PtdOH and InsP3. Additionally, BSF1 does not stimulate Ca2+ mobilization, PKC translocation from cytosol to membrane, or membrane depolarization. All of these metabolic events appear to play a central role in hyper-Ia expression mediated by mIg and are initiated after treatment of resting B cells with anti-Ig antibodies. In vitro phosphorylation studies with partially purified plasma membranes from resting B cells revealed that BSF1 interaction with membrane receptors stimulates a membrane-associated protein kinase that phosphorylates an endogenous protein of 44 KDa. Anti-Ig does not stimulate phosphorylation of the 44 KDa protein, suggesting that it does not activate the membrane-associated protein kinase. This observation provides the first evidence of a signal transduction mechanism associated with BSF1-receptor ligation. It indicates that although BSF1 does not modulate events associated with PKC activation, it may function via activation of a membrane-associated protein kinase. This provides a focal point for further studies directed at elucidating signal transduction resulting from BSF1-receptor interaction.
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Justement L, Chen Z, Harris L, Ransom J, Sandoval V, Smith C, Rennick D, Roehm N, Cambier J. BSF1 induces membrane protein phosphorylation but not phosphoinositide metabolism, Ca2+ mobilization, protein kinase C translocation, or membrane depolarization in resting murine B lymphocytes. J Immunol 1986; 137:3664-70. [PMID: 3023486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The findings presented in this study provide evidence that BSF1 receptors and mIg transmit signals via dissimilar transduction mechanisms that result in a common biologic response, hyper-Ia expression. Specifically, BSF1-containing supernatant does not induce PtdInsP2 hydrolysis as determined by measurement of PtdOH and InsP3. Additionally, BSF1 does not stimulate Ca2+ mobilization, PKC translocation from cytosol to membrane, or membrane depolarization. All of these metabolic events appear to play a central role in hyper-Ia expression mediated by mIg and are initiated after treatment of resting B cells with anti-Ig antibodies. In vitro phosphorylation studies with partially purified plasma membranes from resting B cells revealed that BSF1 interaction with membrane receptors stimulates a membrane-associated protein kinase that phosphorylates an endogenous protein of 44 KDa. Anti-Ig does not stimulate phosphorylation of the 44 KDa protein, suggesting that it does not activate the membrane-associated protein kinase. This observation provides the first evidence of a signal transduction mechanism associated with BSF1-receptor ligation. It indicates that although BSF1 does not modulate events associated with PKC activation, it may function via activation of a membrane-associated protein kinase. This provides a focal point for further studies directed at elucidating signal transduction resulting from BSF1-receptor interaction.
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23
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Sandoval V, Orea A, Camacho B, Caballero J, Diliz H, Larraza O. [Multiple paragangliomas. The problem of its localization. Report of the first case studied with 131I meta-iodobenzylguanidine in our milieu and review of the literature]. Arch Inst Cardiol Mex 1986; 56:237-42. [PMID: 2944492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We report the case of a young woman, with an 8 year history of paroxysmal episodes of dyspnea, palpitations, blurred vision, tremors, precordial oppression and hypertension; the diagnosis of a chromaffin tumor was established, with an increase in serum and urine catecholamines level. She had three surgical interventions and also the following studies: abdominal and pelvic ultrasound, computed tomography, cavography; selective arteriography, and infusion of the meta iodobenzyl-guanidine 131, which localizes tissues hypersecretors rich in catecholamines.
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