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Urrutia I, Martínez R, Calvo B, Saso-Jiménez L, González P, Fernández-Rubio E, Martín-Nieto A, Aguayo A, Rica I, Gaztambide S, Castano L. Autoimmune Diabetes From Childhood to Adulthood: The Role of Pancreatic Autoantibodies and HLA-DRB1 Genotype. J Clin Endocrinol Metab 2023; 108:e1341-e1346. [PMID: 37207452 DOI: 10.1210/clinem/dgad277] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 05/15/2023] [Accepted: 05/15/2023] [Indexed: 05/21/2023]
Abstract
CONTEXT Autoimmune diabetes can develop at any age, but unlike early-onset diabetes, adult onset is less well documented. We aimed to compare, over a wide age range, the most reliable predictive biomarkers for this pathology: pancreatic-autoantibodies and HLA-DRB1 genotype. METHODS A retrospective study of 802 patients with diabetes (aged 11 months to 66 years) was conducted. Pancreatic autoantibodies at diagnosis: insulin autoantibodies (IAA), glutamate decarboxylase autoantibodies (GADA), islet tyrosine phosphatase 2 autoantibodies (IA2A), and zinc transporter-8 autoantibodies (ZnT8A) and HLA-DRB1 genotype were analyzed. RESULTS Compared with early-onset patients, adults had a lower frequency of multiple autoantibodies, with GADA being the most common. At early onset, IAA was the most frequent in those younger than 6 years and correlated inversely with age; GADA and ZnT8A correlated directly and IA2A remained stable.The absence of HLA-DRB1 risk genotype was associated with higher age at diabetes onset (27.5 years; interquartile range [IQR], 14.3-35.7), whereas the high-risk HLA-DR3/DR4 was significantly more common at lower age (11.9 years; IQR, 7.1-21.6). ZnT8A was associated with DR4/non-DR3 (odds ratio [OR], 1.91; 95% CI, 1.15-3.17), GADA with DR3/non-DR4 (OR, 2.97; 95% CI, 1.55-5.71), and IA2A with DR4/non-DR3 and DR3/DR4 (OR, 3.89; 95% CI, 2.28-6.64, and OR, 3.08; 95% CI, 1.83-5.18, respectively). No association of IAA with HLA-DRB1 was found. CONCLUSION Autoimmunity and HLA-DRB1 genotype are age-dependent biomarkers. Adult-onset autoimmune diabetes is associated with lower genetic risk and lower immune response to pancreatic islet cells compared with early-onset diabetes.
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Affiliation(s)
- Inés Urrutia
- Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
- CIBERDEM, CIBERER, UPV-EHU, Endo-ERN, 48903 Barakaldo, Spain
| | - Rosa Martínez
- Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
- CIBERDEM, CIBERER, UPV-EHU, Endo-ERN, 48903 Barakaldo, Spain
| | - Begona Calvo
- Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
- Department of Medical Oncology, Hospital Universitario Cruces, 48903 Barakaldo, Spain
| | - Laura Saso-Jiménez
- Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
- CIBERDEM, CIBERER, UPV-EHU, Endo-ERN, 48903 Barakaldo, Spain
| | - Pedro González
- Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario Cruces, 48903 Barakaldo, Spain
| | - Elsa Fernández-Rubio
- Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario Cruces, 48903 Barakaldo, Spain
| | - Alicia Martín-Nieto
- Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario Cruces, 48903 Barakaldo, Spain
| | - Anibal Aguayo
- Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
- CIBERDEM, CIBERER, UPV-EHU, Endo-ERN, 48903 Barakaldo, Spain
| | - Itxaso Rica
- Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
- CIBERDEM, CIBERER, UPV-EHU, Endo-ERN, 48903 Barakaldo, Spain
- Department of Pediatric Endocrinology, Hospital Universitario Cruces, 48903 Barakaldo, Spain
| | - Sonia Gaztambide
- Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
- CIBERDEM, CIBERER, UPV-EHU, Endo-ERN, 48903 Barakaldo, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario Cruces, 48903 Barakaldo, Spain
| | - Luis Castano
- Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
- CIBERDEM, CIBERER, UPV-EHU, Endo-ERN, 48903 Barakaldo, Spain
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Urrutia I, Martín-Nieto A, Martínez R, Casanovas-Marsal JO, Aguayo A, Del Olmo J, Arana E, Fernandez-Rubio E, Castaño L, Gaztambide S. Incidence of diabetes mellitus and associated risk factors in the adult population of the Basque country, Spain. Sci Rep 2021; 11:3016. [PMID: 33542348 PMCID: PMC7862431 DOI: 10.1038/s41598-021-82548-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 01/15/2021] [Indexed: 01/14/2023] Open
Abstract
The aim of this study was to estimate the incidence of diabetes mellitus in the Basque Country and the risk factors involved in the disease by reassessing an adult population after 7 years of follow-up. In the previous prevalence study, 847 people older than 18 years were randomly selected from all over the Basque Country and were invited to answer a medical questionnaire, followed by a physical examination and an oral glucose tolerance test. In the reassessment, the same variables were collected and the resulting cohort comprised 517 individuals of whom 43 had diabetes at baseline. The cumulative incidence of diabetes was 4.64% in 7 years and the raw incidence rate was 6.56 cases/1000 person-years (95%CI: 4.11-9.93). Among the incident cases, 59% were undiagnosed. The most strongly associated markers by univariate analyses were age > 60 years, dyslipidaemia, prediabetes and insulin resistance. We also found association with hypertension, obesity, family history of diabetes and low education level. Multivariate analysis adjusted for age and sex showed that a set of risk factors assessed together (dyslipidaemia, waist-to-hip-ratio and family history of diabetes) had great predictive value (AUC-ROC = 0.899, 95%CI: 0.846-0.953, p = 0.942), which suggests the need for early intervention before the onset of prediabetes.
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Affiliation(s)
- Inés Urrutia
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country UPV/EHU, Leioa, Bizkaia, Spain
- CIBERDEM (Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders), CIBERER (Spanish Biomedical Research Centre in Rare Diseases), Instituto de Salud Carlos III, Madrid, Spain
| | - Alicia Martín-Nieto
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country UPV/EHU, Leioa, Bizkaia, Spain
- Endocrinology and Nutrition Department, Cruces University Hospital, Osakidetza, Bilbao, Bizkaia, Spain
| | - Rosa Martínez
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country UPV/EHU, Leioa, Bizkaia, Spain
- CIBERDEM (Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders), CIBERER (Spanish Biomedical Research Centre in Rare Diseases), Instituto de Salud Carlos III, Madrid, Spain
| | - J Oriol Casanovas-Marsal
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country UPV/EHU, Leioa, Bizkaia, Spain
| | - Anibal Aguayo
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country UPV/EHU, Leioa, Bizkaia, Spain
- CIBERDEM (Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders), CIBERER (Spanish Biomedical Research Centre in Rare Diseases), Instituto de Salud Carlos III, Madrid, Spain
| | - Juan Del Olmo
- Clinical Chemistry Laboratory, Cruces University Hospital, Osakidetza, Bilbao, Bizkaia, Spain
| | - Eunate Arana
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country UPV/EHU, Leioa, Bizkaia, Spain
| | - Elsa Fernandez-Rubio
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country UPV/EHU, Leioa, Bizkaia, Spain
- Endocrinology and Nutrition Department, Cruces University Hospital, Osakidetza, Bilbao, Bizkaia, Spain
| | - Luis Castaño
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country UPV/EHU, Leioa, Bizkaia, Spain.
- CIBERDEM (Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders), CIBERER (Spanish Biomedical Research Centre in Rare Diseases), Instituto de Salud Carlos III, Madrid, Spain.
| | - Sonia Gaztambide
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, University of the Basque Country UPV/EHU, Leioa, Bizkaia, Spain.
- CIBERDEM (Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders), CIBERER (Spanish Biomedical Research Centre in Rare Diseases), Instituto de Salud Carlos III, Madrid, Spain.
- Endocrinology and Nutrition Department, Cruces University Hospital, Osakidetza, Bilbao, Bizkaia, Spain.
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Sosa A, Armienta MA, Aguayo A, Cruz O. Evaluation of the influence of main groundwater ions on arsenic removal by limestones through column experiments. Sci Total Environ 2020; 727:138459. [PMID: 32334211 DOI: 10.1016/j.scitotenv.2020.138459] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 04/02/2020] [Accepted: 04/03/2020] [Indexed: 06/11/2023]
Abstract
The influence of common groundwater major ions on arsenic (As) retention by native limestones was studied through column experiments. Columns were packed with rock particles (0.5-1.41 mm) and fed with solutions containing As, and chloride (Cl), sulfate, bicarbonate or fluoride (F) in concentrations similar to those measured in one of the most As-rich wells of Mexico. Besides, other solutions were also treated containing multiples or submultiples of those anion concentrations. Physico-chemical parameters, As, and each anion concentrations were determined weekly along 4 months. After the end of the experiments rocks collected from the top of the columns were analyzed by XRF, XRD, and SEM-WDS. Concentrations of As decreased from 1.2 mg/L to values below the Mexican drinking water standard (0.025 mg/L), since the first week in the solutions containing F or Cl keeping low values afterwards, indicating that they do not interfere with As removal. However, although As strongly decreased in the solutions containing sulfate since the first week, it started to increase from the 12th week in the highest concentrated solution. Bicarbonate was the anion affecting most As retention, since, after its decrease below 0.025 mg/L in the 2nd week for both solutions (30 mg/L and 300 mg/L), it started to increase since the 7th week in the most concentrated one, but maintained a low concentration in the least concentrated solution. Saturation index calculations and XRD analyses did not evidence the formation of As minerals. However, SEM elemental maps and XRF analyses showed the presence of As on the rocks after the treatments. Results indicate that As may be retained by sorption. Sulfate and bicarbonate compete with As for sorption sites. Results showed that native limestones are an option for treating As polluted water. Experiments also indicated that bicarbonate and sulfate may interfere with As removal depending on their concentrations.
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Affiliation(s)
- A Sosa
- Universidad Nacional Autónoma de México, Posgrado en Ciencias de la Tierra, CDMX 04510, Mexico
| | - M Aurora Armienta
- Universidad Nacional Autónoma de México, Instituto de Geofísica, C.U., CDMX 04510, Mexico.
| | - A Aguayo
- Universidad Nacional Autónoma de México, Instituto de Geofísica, C.U., CDMX 04510, Mexico
| | - O Cruz
- Universidad Nacional Autónoma de México, Instituto de Geofísica, C.U., CDMX 04510, Mexico
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García-Castaño A, Madariaga L, Pérez de Nanclares G, Vela A, Rica I, Gaztambide S, Martínez R, Martinez de LaPiscina I, Urrutia I, Aguayo A, Velasco O, Castaño L. Response to Letter to the Editor: "Forty-One Individuals with Mutations in the AVP-NPII Gene Associated with Familial Neurohypophyseal Diabetes Insipidus. J Clin Endocrinol Metab 2020; 105:5835887. [PMID: 32392319 DOI: 10.1210/clinem/dgaa255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 05/06/2020] [Indexed: 11/19/2022]
Affiliation(s)
| | - Leire Madariaga
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
- UPV/EHU, Leioa, Spain
| | - Gustavo Pérez de Nanclares
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
| | - Amaia Vela
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
- UPV/EHU, Leioa, Spain
| | - Itxaso Rica
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
| | - Sonia Gaztambide
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
- UPV/EHU, Leioa, Spain
| | - Rosa Martínez
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
| | | | - Inés Urrutia
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
| | - Anibal Aguayo
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
| | - Olaia Velasco
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
| | - Luis Castaño
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
- UPV/EHU, Leioa, Spain
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García-Castaño A, Madariaga L, Pérez de Nanclares G, Vela A, Rica I, Gaztambide S, Martínez R, Martinez de LaPiscina I, Urrutia I, Aguayo A, Velasco O, Castaño L. Forty-One Individuals With Mutations in the AVP-NPII Gene Associated With Familial Neurohypophyseal Diabetes Insipidus. J Clin Endocrinol Metab 2020; 105:5735194. [PMID: 32052034 DOI: 10.1210/clinem/dgaa069] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 02/07/2020] [Indexed: 11/19/2022]
Abstract
CONTEXT Familial neurohypophyseal diabetes insipidus is a rare disease produced by a deficiency in the secretion of antidiuretic hormone and is caused by mutations in the arginine vasopressin gene. OBJECTIVE Clinical, biochemical, and genetic characterization of a group of patients clinically diagnosed with familial neurohypophyseal diabetes insipidus, 1 of the largest cohorts of patients with protein neurophysin II (AVP-NPII) gene alterations studied so far. DESIGN The AVP-NPII gene was screened for mutations by PCR followed by direct Sanger sequencing in 15 different unrelated families from Spain. RESULTS The 15 probands presented with polyuria and polydipsia as the most important symptoms at the time of diagnosis. In these patients, the disease was diagnosed at a median of 6 years of age. We observed 11 likely pathogenic variants. Importantly, 4 of the AVP-NPII variants were novel (p.(Tyr21Cys), p.(Gly45Ser), p.(Cys75Tyr), p.(Gly88Cys)). CONCLUSIONS Cytotoxicity seems to be due to consequences common to all the variants found in our cohort, which are not able to fold correctly and pass the quality control of the ER. In concordance, we found autosomal dominant familial neurohypophyseal diabetes insipidus in the 15 families studied.
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Affiliation(s)
| | - Leire Madariaga
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
- UPV/EHU, Leioa, Spain
| | - Gustavo Pérez de Nanclares
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
| | - Amaia Vela
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
- UPV/EHU, Leioa, Spain
| | - Itxaso Rica
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
| | - Sonia Gaztambide
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
- UPV/EHU, Leioa, Spain
| | - Rosa Martínez
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
| | | | - Inés Urrutia
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
| | - Anibal Aguayo
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
| | - Olaia Velasco
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
| | | | - Luis Castaño
- Biocruces Bizkaia Health Research Institute, CIBERDEM, CIBERER, Barakaldo, Spain
- Hospital Universitario Cruces, Barakaldo, Spain
- UPV/EHU, Leioa, Spain
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Urrutia I, Martínez R, Rica I, Martínez de LaPiscina I, García-Castaño A, Aguayo A, Calvo B, Castaño L. Negative autoimmunity in a Spanish pediatric cohort suspected of type 1 diabetes, could it be monogenic diabetes? PLoS One 2019; 14:e0220634. [PMID: 31365591 PMCID: PMC6668821 DOI: 10.1371/journal.pone.0220634] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 07/19/2019] [Indexed: 12/19/2022] Open
Abstract
Objective Monogenic diabetes can be misdiagnosed as type 1 or type 2 diabetes in children. The right diagnosis is crucial for both therapeutic choice and prognosis and influences genetic counseling. The main objective of this study was to search for monogenic diabetes in Spanish pediatric patients suspected of type 1 diabetes with lack of autoimmunity at the onset of the disease. We also evaluated the extra value of ZnT8A in addition to the classical IAA, GADA and IA2A autoantibodies to improve the accuracy of type 1 diabetes diagnosis. Methods Four hundred Spanish pediatric patients with recent-onset diabetes (mean age 8.9 ± 3.9 years) were analyzed for IAA, GADA, IA2A and ZnT8A pancreatic-autoantibodies and HLA-DRB1 alleles. Patients without autoimmunity and those with only ZnT8A positive were screened for 12 monogenic diabetes genes by next generation sequencing. Results ZnT8A testing increased the number of autoantibody-positive patients from 373 (93.3%) to 377 (94.3%). An isolated positivity for ZnT8A allowed diagnosing autoimmune diabetes in 14.8% (4/27) of pediatric patients negative for the rest of the antibodies tested. At least 2 of the 23 patients with no detectable autoimmunity (8%) carried heterozygous pathogenic variants: one previously reported missense variant in the INS gene (p.Gly32Ser) and one novel frameshift variant (p.Val264fs) in the HNF1A gene. One variant of uncertain significance was also found. Carriers of pathogenic variants had HLA-DRB1 risk alleles for autoimmune diabetes and clinical characteristics compatible with type 1 diabetes except for the absence of autoimmunity. Conclusion ZnT8A determination improves the diagnosis of autoimmune diabetes in pediatrics. At least 8% of pediatric patients suspected of type 1 diabetes and with undetectable autoimmunity have monogenic diabetes and can benefit from the correct diagnosis of the disease by genetic study.
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Affiliation(s)
- Inés Urrutia
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, UPV-EHU, Bizkaia, Spain
- CIBERDEM, CIBERER, Instituto de Salud Carlos III, Madrid, Spain
| | - Rosa Martínez
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, UPV-EHU, Bizkaia, Spain
- CIBERDEM, CIBERER, Instituto de Salud Carlos III, Madrid, Spain
| | - Itxaso Rica
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, UPV-EHU, Bizkaia, Spain
- CIBERDEM, CIBERER, Instituto de Salud Carlos III, Madrid, Spain
- Pediatric Endocrinology Service, Cruces University Hospital, Osakidetza, Bizkaia, Spain
| | - Idoia Martínez de LaPiscina
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, UPV-EHU, Bizkaia, Spain
- CIBERDEM, CIBERER, Instituto de Salud Carlos III, Madrid, Spain
| | - Alejandro García-Castaño
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, UPV-EHU, Bizkaia, Spain
- CIBERDEM, CIBERER, Instituto de Salud Carlos III, Madrid, Spain
| | - Anibal Aguayo
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, UPV-EHU, Bizkaia, Spain
- CIBERDEM, CIBERER, Instituto de Salud Carlos III, Madrid, Spain
| | - Begoña Calvo
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, UPV-EHU, Bizkaia, Spain
| | - Luis Castaño
- Biocruces Bizkaia Health Research Institute, Cruces University Hospital, UPV-EHU, Bizkaia, Spain
- CIBERDEM, CIBERER, Instituto de Salud Carlos III, Madrid, Spain
- * E-mail:
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Morlett PA, Calderón CJ, Aguayo A, Rivera D, Arango LJ. C-02Rey-Osterrieth Complex Figure: Normative Data for an Illiterate Adult Population from 5 Latin American Countries. Arch Clin Neuropsychol 2017. [DOI: 10.1093/arclin/acx076.169] [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: 11/13/2022] Open
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Aguayo A, Urrutia I, González-Frutos T, Martínez R, Martínez-Indart L, Castaño L, Gaztambide S. Prevalence of diabetes mellitus and impaired glucose metabolism in the adult population of the Basque Country, Spain. Diabet Med 2017; 34:662-666. [PMID: 27353285 DOI: 10.1111/dme.13181] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/27/2016] [Indexed: 01/13/2023]
Abstract
AIMS To assess the prevalence of diabetes mellitus and impaired glucose metabolism in the Basque Country and their relationship with cardiovascular risk factors. METHODS A population-based, cross-sectional, cluster sampling design study was carried out in an adult (≥18 years) Basque population. A total of 847 participants completed a questionnaire on personal and family medical history and lifestyle. Anthropometric variables and blood pressure were measured and biochemical analysis and an oral glucose tolerance test (75 g) were also performed. RESULTS The total prevalence of diabetes was 10.6% (95% CI 8.65-12.95). Among them 6.3% (95% CI 4.79-8.22) had previously been diagnosed and 4.3% (95% CI 3.04-5.92) were not aware that they had diabetes. Impaired glucose tolerance was present in 7.2% (95% CI 5.53-9.15) and impaired fasting glucose in 3.8% (95% CI 2.64-5.37) of the population. In total, 21.6% of the population had some type of glucose metabolism disturbance, with a higher rate among men (28.3 vs 16.3%; P<0.001) and with the rate increasing with age. Risk factors independently associated with the development of diabetes were: male sex [odds ratio 4.58 (95% CI 2.34-8.97)]; abdominal obesity [odds ratio 2.80 (95% CI 1.47-5.36)]; high triglyceride levels [odds ratio 2.46 (95% CI 1.26-4.81)]; hypertension [odds ratio 2.40 (95% CI 1.16-4.96)]; family history of diabetes [odds ratio 2.30 (95% CI 1.25-4.24)]; high LDL cholesterol levels [odds ratio 1.83 (95% CI 1.01-3.31)] and older age [odds ratio 1.08 (95% CI 1.05-1.10)]. CONCLUSIONS The prevalence of diabetes in the Basque Country was lower than in Spain and was independently associated with family history of diabetes and with cardiovascular risk factors such as abdominal obesity, hypertension, high LDL cholesterol levels and high triglyceride levels, which were also observed in those with prediabetes.
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Affiliation(s)
- A Aguayo
- BioCruces Research Institute, Cruces University Hospital, University of the Basque Country (UPV/EHU), Bizkaia, Spain
- CIBERDEM (Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders), CIBERER (Spanish Biomedical Research Centre in Rare Diseases), Madrid, Spain
| | - I Urrutia
- BioCruces Research Institute, Cruces University Hospital, University of the Basque Country (UPV/EHU), Bizkaia, Spain
- CIBERDEM (Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders), CIBERER (Spanish Biomedical Research Centre in Rare Diseases), Madrid, Spain
| | - T González-Frutos
- BioCruces Research Institute, Cruces University Hospital, University of the Basque Country (UPV/EHU), Bizkaia, Spain
- CIBERDEM (Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders), CIBERER (Spanish Biomedical Research Centre in Rare Diseases), Madrid, Spain
| | - R Martínez
- BioCruces Research Institute, Cruces University Hospital, University of the Basque Country (UPV/EHU), Bizkaia, Spain
- CIBERDEM (Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders), CIBERER (Spanish Biomedical Research Centre in Rare Diseases), Madrid, Spain
| | - L Martínez-Indart
- BioCruces Research Institute, Cruces University Hospital, University of the Basque Country (UPV/EHU), Bizkaia, Spain
| | - L Castaño
- BioCruces Research Institute, Cruces University Hospital, University of the Basque Country (UPV/EHU), Bizkaia, Spain
- CIBERDEM (Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders), CIBERER (Spanish Biomedical Research Centre in Rare Diseases), Madrid, Spain
| | - S Gaztambide
- BioCruces Research Institute, Cruces University Hospital, University of the Basque Country (UPV/EHU), Bizkaia, Spain
- CIBERDEM (Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders), CIBERER (Spanish Biomedical Research Centre in Rare Diseases), Madrid, Spain
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9
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Velayos T, Martínez R, Alonso M, Garcia-Etxebarria K, Aguayo A, Camarero C, Urrutia I, Martínez de LaPiscina I, Barrio R, Santin I, Castaño L. An Activating Mutation in STAT3 Results in Neonatal Diabetes Through Reduced Insulin Synthesis. Diabetes 2017; 66:1022-1029. [PMID: 28073828 DOI: 10.2337/db16-0867] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 01/05/2017] [Indexed: 11/13/2022]
Abstract
Neonatal diabetes mellitus (NDM) is a rare form of diabetes diagnosed within the first 6 months of life. Genetic studies have allowed the identification of several genes linked to the development of NDM; however, genetic causes for ∼20% of the cases remain to be clarified. Most cases of NDM involve isolated diabetes, but sometimes NDM appears in association with other pathological conditions, including autoimmune diseases. Recent reports have linked activating mutations in STAT3 with early-onset autoimmune disorders that include diabetes of autoimmune origin, but the functional impact of STAT3-activating mutations have not been characterized at the pancreatic β-cell level. By using whole-exome sequencing, we identified a novel missense mutation in the binding domain of the STAT3 protein in a patient with NDM. The functional analyses showed that the mutation results in an aberrant activation of STAT3, leading to deleterious downstream effects in pancreatic β-cells. The identified mutation leads to hyperinhibition of the transcription factor Isl-1 and, consequently, to a decrease in insulin expression. These findings represent the first functional indication of a direct link between an NDM-linked activating mutation in STAT3 and pancreatic β-cell dysfunction.
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Affiliation(s)
- Teresa Velayos
- Endocrinology and Diabetes Research Group, Hospital Universitario Cruces, BioCruces Health Research Institute, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
| | - Rosa Martínez
- Endocrinology and Diabetes Research Group, Hospital Universitario Cruces, BioCruces Health Research Institute, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
| | - Milagros Alonso
- Pediatrics Endocrinology, Ramon y Cajal University Hospital, Madrid, Spain
| | - Koldo Garcia-Etxebarria
- Immunogenetics Research Laboratory, Department of Genetics, Physical Anthropology and Animal Physiology, BioCruces Health Research Institute, UPV-EHU, Leioa, Spain
| | - Anibal Aguayo
- Endocrinology and Diabetes Research Group, Hospital Universitario Cruces, BioCruces Health Research Institute, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
| | - Cristina Camarero
- Pediatrics Endocrinology, Ramon y Cajal University Hospital, Madrid, Spain
| | - Inés Urrutia
- Endocrinology and Diabetes Research Group, Hospital Universitario Cruces, BioCruces Health Research Institute, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
| | - Idoia Martínez de LaPiscina
- Endocrinology and Diabetes Research Group, Hospital Universitario Cruces, BioCruces Health Research Institute, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
| | - Raquel Barrio
- Pediatrics Endocrinology, Ramon y Cajal University Hospital, Madrid, Spain
| | - Izortze Santin
- Endocrinology and Diabetes Research Group, Hospital Universitario Cruces, BioCruces Health Research Institute, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
| | - Luis Castaño
- Endocrinology and Diabetes Research Group, Hospital Universitario Cruces, BioCruces Health Research Institute, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
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10
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Arango-Lasprilla JC, Rivera D, Rodríguez G, Garza MT, Galarza-Del-Angel J, Rodríguez W, Velázquez-Cardoso J, Aguayo A, Schebela S, Weil C, Longoni M, Aliaga A, Ocampo-Barba N, Saracho CP, Panyavin I, Esenarro L, Martínez C, García de la Cadena C, Perrin PB. Symbol Digit Modalities Test: Normative data for the Latin American Spanish speaking adult population. NeuroRehabilitation 2016; 37:625-38. [PMID: 26639927 DOI: 10.3233/nre-151282] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To generate normative data on the Symbol Digit Modalities Test (SDMT) across 11 countries in Latin America, with country-specific adjustments for gender, age, and education, where appropriate. METHOD The sample consisted of 3,977 healthy adults who were recruited from Argentina, Bolivia, Chile, Cuba, El Salvador, Guatemala, Honduras, Mexico, Paraguay, Peru, and, Puerto Rico. Each subject was administered the SDMT as part of a larger neuropsychological battery. A standardized five-step statistical procedure was used to generate the norms. RESULTS The final multiple linear regression models explained 29-56% of the variance in SDMT scores. Although there were gender differences on the SDMT in Mexico, Honduras, Paraguay, and Guatemala, none of the four countries had an effect size greater than 0.3. As a result, gender-adjusted norms were not generated. CONCLUSIONS This is the first normative multicenter study conducted in Latin America to create norms for the SDMT; this study will have an impact on the future practice of neuropsychology throughout the global region.
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Affiliation(s)
- J C Arango-Lasprilla
- IKERBASQUE, Basque Foundation for Science, Bilbao, Spain.,Faculty of Psychology and Education, University of Deusto, Bilbao, Spain
| | - D Rivera
- Faculty of Psychology and Education, University of Deusto, Bilbao, Spain
| | - G Rodríguez
- Hospital Clínico Quirúrgico Docente "Hermanos Ameijeiras", Havana, Cuba
| | - M T Garza
- Facultad de Psicología, Universidad Autónoma de Nuevo Leon, Monterrey, Mexico
| | | | - W Rodríguez
- Ponce Health Sciences University, Ponce, Puerto Rico
| | | | - A Aguayo
- Instituto Vocacional Enrique Díaz de León, Guadalajara, Mexico
| | - S Schebela
- Instituto de Prevención Social, Asunción, Paraguay
| | - C Weil
- Escuela de Psicología, Universidad Dr. José Matías Delgado, San Salvador, El Salvador
| | - M Longoni
- Clínica de rehabilitación Las Araucarias, Buenos Aires, Argentina
| | - A Aliaga
- Servicio Médico Legal, Ministerio de Justicia, Santiago, Chile
| | | | | | - I Panyavin
- Faculty of Psychology and Education, University of Deusto, Bilbao, Spain
| | - L Esenarro
- Instituto de Neuropsicología y Demencias, Lima, Peru
| | - C Martínez
- Departamento de Medicina de Rehabilitación, Universidad Nacional Autónoma de Honduras, Tegucigalpa, Honduras
| | - C García de la Cadena
- Departamento de psicología, Universidad del Valle de Guatemala, Guatemala City, Guatemala
| | - P B Perrin
- Department of Psychology, Virginia Commonwealth University, Richmond, VA, USA
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11
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Arango-Lasprilla JC, Rivera D, Garza MT, Saracho CP, Rodríguez W, Rodríguez-Agudelo Y, Aguayo A, Schebela S, Luna M, Longoni M, Martínez C, Doyle S, Ocampo-Barba N, Galarza-Del-Angel J, Aliaga A, Bringas M, Esenarro L, García-Egan P, Perrin PB. Hopkins Verbal Learning Test- Revised: Normative data for the Latin American Spanish speaking adult population. NeuroRehabilitation 2016; 37:699-718. [PMID: 26639933 DOI: 10.3233/nre-151286] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [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: 11/15/2022]
Abstract
OBJECTIVE To generate normative data on the Hopkins Verbal Learning Test- Revised (HVLT-R) across 11 countries in Latin America, with country-specific adjustments for gender, age, and education, where appropriate. METHOD The sample consisted of 3,977 healthy adults who were recruited from Argentina, Bolivia, Chile, Cuba, El Salvador, Guatemala, Honduras, Mexico, Paraguay, Peru, and, Puerto Rico. Each subject was administered the HVLT-R as part of a larger neuropsychological battery. A standardized five-step statistical procedure was used to generate the norms. RESULTS The final multiple linear regression models explained 17- 45% of the variance in HVLT-R scores. Although t-tests showed significant differences between men and women in Guatemala on the HVLT-R, it was a small effect size. As a result, gender-adjusted norms were not generated. CONCLUSIONS The results from this study will have a substantial impact on the practice of neuropsychology in Latin America, as this is the first normative multicenter study to develop norms for the HVLT-R in this region.
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Affiliation(s)
| | - D Rivera
- Faculty of Psychology and Education, University of Deusto, Bilbao, Spain
| | - M T Garza
- Facultad de Psicología, Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | | | - W Rodríguez
- Ponce Health Sciences University, Ponce, Puerto Rico
| | | | - A Aguayo
- Instituto Vocacional Enrique Díaz de León, Guadalajara, Mexico
| | - S Schebela
- Instituto de Prevención Social, Asunción, Paraguay
| | - M Luna
- Universidad Dr. José Matías Delgado, San Salvador, El Salvador
| | - M Longoni
- Clínica de rehabilitación Las Araucarias, Buenos Aires, Argentina
| | - C Martínez
- Departamento de Medicina de Rehabilitación, Universidad Nacional Autónoma de Honduras, Tegucigalpa, Honduras
| | - S Doyle
- Department of Psychology, Virginia Commonwealth University, Richmond, VA, USA
| | | | | | - A Aliaga
- Servicio Médico Legal, Ministerio de Justicia, Santiago, Chile
| | - M Bringas
- International center for neurological Restoration CIREN, Havana, Cuba
| | - L Esenarro
- Instituto de Neuropsicología y Demencias, Lima, Peru
| | - P García-Egan
- Fundación Horizontes, Santa Cruz de la Sierra, Bolivia
| | - P B Perrin
- Department of Psychology, Virginia Commonwealth University, Richmond, VA, USA
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12
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Martínez R, Fernández-Ramos C, Vela A, Velayos T, Aguayo A, Urrutia I, Rica I, Castaño L. Clinical and genetic characterization of congenital hyperinsulinism in Spain. Eur J Endocrinol 2016; 174:717-26. [PMID: 27188453 DOI: 10.1530/eje-16-0027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 03/07/2016] [Indexed: 12/30/2022]
Abstract
CONTEXT Congenital hyperinsulinism (CHI) is a clinically and genetically heterogeneous disease characterized by severe hypoglycemia caused by inappropriate insulin secretion by pancreatic β-cells. OBJECTIVE To characterize clinically and genetically CHI patients in Spain. DESIGN AND METHODS We included 50 patients with CHI from Spain. Clinical information was provided by the referring clinicians. Mutational analysis was carried out for KCNJ11, ABCC8, and GCK genes. The GLUD1, HNF4A, HNF1A, UCP2, and HADH genes were sequenced depending on the clinical phenotype. RESULTS We identified the genetic etiology in 28 of the 50 CHI patients tested: 21 had a mutation in KATP channel genes (42%), three in GLUD1 (6%), and four in GCK (8%). Most mutations were found in ABCC8 (20/50). Half of these patients (10/20) were homozygous or compound heterozygous, with nine being unresponsive to diazoxide treatment. The other half had heterozygous mutations in ABCC8, six of them being unresponsive to diazoxide treatment and four being responsive to diazoxide treatment. We identified 22 different mutations in the KATP channel genes, of which ten were novel. Notably, patients with ABCC8 mutations were diagnosed earlier, with lower blood glucose levels and required higher doses of diazoxide than those without a genetic diagnosis. CONCLUSIONS Genetic analysis revealed mutations in 56% of the CHI patients. ABCC8 mutations are the most frequent cause of CHI in Spain. We found ten novel mutations in the KATP channel genes. The genetic diagnosis is more likely to be achieved in patients with onset within the first week of life and in those who fail to respond to diazoxide treatment.
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Affiliation(s)
- R Martínez
- Endocrinology and Diabetes Research GroupBioCruces Health Research Institute, Cruces University Hospital, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
| | - C Fernández-Ramos
- Pediatric Endocrinology SectionBasurto University Hospital, BioCruces Health Research Institute, UPV/EHU, Bilbao, Spain
| | - A Vela
- Pediatric Endocrinology SectionCruces University Hospital, BioCruces Health Research Institute, CIBERDEM, CIBERER, UPV/EHU, Barakaldo, Spain
| | - T Velayos
- Endocrinology and Diabetes Research GroupBioCruces Health Research Institute, Cruces University Hospital, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
| | - A Aguayo
- Endocrinology and Diabetes Research GroupBioCruces Health Research Institute, Cruces University Hospital, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
| | - I Urrutia
- Endocrinology and Diabetes Research GroupBioCruces Health Research Institute, Cruces University Hospital, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
| | - I Rica
- Pediatric Endocrinology SectionCruces University Hospital, BioCruces Health Research Institute, CIBERDEM, CIBERER, UPV/EHU, Barakaldo, Spain
| | - L Castaño
- Endocrinology and Diabetes Research GroupBioCruces Health Research Institute, Cruces University Hospital, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
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13
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Rivera D, Perrin P, Weiler G, Ocampo-Barba N, Aliaga A, Rodríguez W, Rodríguez-Agudelo Y, Aguayo A, Longoni M, Trapp S, Esenarro L, Arango-Lasprilla J. Test of Memory Malingering (TOMM): Normative data for the Latin American Spanish speaking adult population. NeuroRehabilitation 2015; 37:719-35. [DOI: 10.3233/nre-151287] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- D. Rivera
- Faculty of Psychology and Education, University of Deusto, Bilbao, Spain
| | - P.B. Perrin
- Department of Psychology, Virginia Commonwealth University, Richmond, VA, USA
| | - G. Weiler
- Instituto de Prevención Social, Asuncion, Paraguay
| | | | - A. Aliaga
- Servicio Médico Legal, Ministerio de Justicia, Santiago, Chile
| | - W. Rodríguez
- Ponce Health Sciences University, Ponce, Puerto Rico
| | | | - A. Aguayo
- Instituto Vocacional Enrique Díaz de León, Guadalajara, Mexico
| | - M. Longoni
- Clínica de rehabilitación Las Araucarias, Buenos Aires, Argentina
| | - S. Trapp
- Department of Psychology, Virginia Commonwealth University, Richmond, VA, USA
| | - L. Esenarro
- Instituto de Neuropsicología y Demencias, Lima, Peru
| | - J.C. Arango-Lasprilla
- IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
- Faculty of Psychology and Education, University of Deusto, Bilbao, Spain
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14
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Arango-Lasprilla J, Rivera D, Aguayo A, Rodríguez W, Garza M, Saracho C, Rodríguez-Agudelo Y, Aliaga A, Weiler G, Luna M, Longoni M, Ocampo-Barba N, Galarza-del-Angel J, Panyavin I, Guerra A, Esenarro L, García de la Cadena P, Martínez C, Perrin P. Trail Making Test: Normative data for the Latin American Spanish speaking adult population. NeuroRehabilitation 2015; 37:639-61. [DOI: 10.3233/nre-151284] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- J.C. Arango-Lasprilla
- IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
- Faculty of Psychology and Education, University of Deusto, Bilbao, Spain
| | - D. Rivera
- Faculty of Psychology and Education, University of Deusto, Bilbao, Spain
| | - A. Aguayo
- Instituto Vocacional Enrique Díaz de León, Guadalajara, Mexico
| | - W. Rodríguez
- Ponce Health Sciences University, Ponce, Puerto Rico
| | - M.T. Garza
- Facultad de Psicología, Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | | | | | - A. Aliaga
- Servicio Médico Legal, Ministerio de Justicia, Santiago, Chile
| | - G. Weiler
- Instituto de Prevención Social, Asunción, Paraguay
| | - M. Luna
- Universidad Dr, José Matías Delgado, San Salvador, El Salvador
| | - M. Longoni
- Clínica de rehabilitación Las Araucarias, Buenos Aires, Argentina
| | | | | | - I. Panyavin
- Faculty of Psychology and Education, University of Deusto, Bilbao, Spain
| | - A. Guerra
- Departamento de Psicología, Universidad de Camagüey Ignacio Agramonte Loynaz, Camaguey, Cuba
| | - L. Esenarro
- Departamento de Psicología, Universidad del Valle de Guatemala, Guatemala City, Guatemala
| | | | - C. Martínez
- Departamento de Medicina de Rehabilitación, Nacional Autónoma de Honduras, Tegucigalpa, Honduras
| | - P.B. Perrin
- Department of Psychology, Virginia Commonwealth University, Richmond, USA
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15
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Rivera D, Perrin P, Aliaga A, Garza M, Saracho C, Rodrŕguez W, Justo-Guillen E, Aguayo A, Schebela S, Gulin S, Weil C, Longoni M, Ocampo-Barba N, Galarza-del-Angel J, Rodrŕguez D, Esenarro L, García-Egan P, Martínez C, Arango-Lasprilla J. Brief Test of Attention: Normative data for the Latin American Spanish speaking adult population. NeuroRehabilitation 2015; 37:663-76. [DOI: 10.3233/nre-151283] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- D. Rivera
- Faculty of Psychology and Education, University of Deusto, Bilbao, Spain
| | - P.B. Perrin
- Department of Psychology, Virginia Commonwealth University, Richmond, USA
| | - A. Aliaga
- Servicio Médico Legal, Ministerio de Justicia, Santiago, Chile
| | - M.T. Garza
- Facultad de Psicología, Universidad Autónoma de Nuevo León, Monterrey, Mexico
| | | | - W. Rodrŕguez
- Ponce Health Sciences University, Ponce, Puerto Rico
| | - E. Justo-Guillen
- Instituto Nacional de Neurología y Neurocirugía MVS, Mexico City, Mexico
| | - A. Aguayo
- Instituto Vocacional Enrique Díaz de León, Guadalajara, Mexico
| | - S. Schebela
- Instituto de Prevención Social, Asunción, Paraguay
| | - S. Gulin
- Department of Psychology, Virginia Commonwealth University, Richmond, USA
| | - C. Weil
- Escuela de Psicología, Universidad Dr. José Matías Delgado, San Salvador, El Salvador
| | - M. Longoni
- Clínica de rehabilitación Las Araucarias, Buenos Aires, Argentina
| | | | | | - D. Rodrŕguez
- Centro investigaciones Medico Quirúrgicas CIMEQ, Havana, Cuba
| | - L. Esenarro
- Instituto de Neuropsicología y Demencias, Lima, Peru
| | - P. García-Egan
- Departamento de Psicología, Universidad del Valle de Guatemala, Guatemala City, Guatemala
| | - C. Martínez
- Departamento de Medicina de Rehabilitación, Nacional Autónoma de Honduras, Tegucigalpa, Honduras
| | - J.C. Arango-Lasprilla
- Faculty of Psychology and Education, University of Deusto, Bilbao, Spain
- IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
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16
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Grau G, Aguayo A, Vela A, Aniel-Quiroga A, Espada M, Miranda G, Martinez-Indart L, Martul P, Castaño L, Rica I. Normal intellectual development in children born from women with hypothyroxinemia during their pregnancy. J Trace Elem Med Biol 2015; 31:18-24. [PMID: 26004887 DOI: 10.1016/j.jtemb.2015.02.004] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 01/29/2015] [Accepted: 02/21/2015] [Indexed: 10/23/2022]
Abstract
Proper maternal thyroid function is known to be essential for neural differentiation and migration in the fetus during the first half of pregnancy. The objectives of this study were to assess the relationship between thyroxin levels, in pregnant women with no thyroid disease and the intellectual development of their offspring in a non-iodine-deficient area, and to know specifically whether or not isolated hypothyroxinemia during pregnancy was associated with a lower intelligence in the offspring. Previously we had publicated values TSH, FT4, free T3 (FT3), anti-thyroid peroxidase antibodies (TPO Abs) and urinary iodine concentration (UIC) in 1322 pregnant women in our hospital area. Now we presented results of intelligence quotient in children born from these pregnancies. We assessed 455 children at one year of age using Brunet-Lezine scale. Of these, 289 children were evaluated again at 6-8 years of age using the WISC-IV. From the total group of children recruited, we established as control subgroup, children born of rigorously normal pregnancies (women with UIC > 150 μg/L, FT4>10th percentile and TPO-Ab negative in both trimesters). The remaining children were divided into two subgroups: those born to mothers with FT4 below the 10th percentile and the rest. No correlation was found between FT4 maternal levels, in either of trimesters studied, and the intellectual scores of offspring. No differences were found in intellectual scores comparing children born to mothers with hypothyroxinemia and those whose mothers were euthyroxinemic in both trimesters, or with the control subgroup. As conclusions we did not find any association between the levels of maternal FT4 during pregnancy and the subsequent intellectual development the offspring from these pregnancies. We attribute this result to the fact that all the pregnant women included had normal thyroid function.
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Affiliation(s)
- Gema Grau
- Paediatric Endocrinology Unit, BioCruces Health Research Institute, Hospital Universitario Cruces, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Plaza de Cruces s/n, 48903 Barakaldo, Bizkaia, Spain.
| | - Anibal Aguayo
- Paediatric Endocrinology Unit, BioCruces Health Research Institute, Hospital Universitario Cruces, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Plaza de Cruces s/n, 48903 Barakaldo, Bizkaia, Spain; CIBERER (Center for Biomedical Research on Rare Diseases), Carlos III Health Institute, Madrid, Spain
| | - Amaia Vela
- Paediatric Endocrinology Unit, BioCruces Health Research Institute, Hospital Universitario Cruces, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Plaza de Cruces s/n, 48903 Barakaldo, Bizkaia, Spain; CIBERER (Center for Biomedical Research on Rare Diseases), Carlos III Health Institute, Madrid, Spain
| | - Angeles Aniel-Quiroga
- Biochemistry Laboratory, BioCruces Health Research Institute, Hospital Universitario Cruces, UPV/EHU, BioCruces, Plaza de Cruces s/n, 48903 Barakaldo, Bizkaia, Spain; CIBERER (Center for Biomedical Research on Rare Diseases), Carlos III Health Institute, Madrid, Spain
| | - Mercedes Espada
- Public Health Laboratory Standards, Basque Government Department of Health, Parque Tecnológico de Bizkaia, Ibaizabal Bidea, 48160 Derio, Bizkaia, Spain
| | | | - Lorea Martinez-Indart
- Clinical Epidemiologic Unit, BioCruces Health Research Institute, Hospital Universitario Cruces, Plaza de Cruces s/n, 48903 Barakaldo, Bizkaia, Spain
| | - Pedro Martul
- Paediatric Endocrinology Unit, BioCruces Health Research Institute, Hospital Universitario Cruces, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Plaza de Cruces s/n, 48903 Barakaldo, Bizkaia, Spain; CIBERER (Center for Biomedical Research on Rare Diseases), Carlos III Health Institute, Madrid, Spain
| | - Luis Castaño
- Research Unit, BioCruces Health Research Institute, Hospital Universitario Cruces, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Plaza de Cruces s/n, 48903 Barakaldo, Bizkaia, Spain; CIBERER (Center for Biomedical Research on Rare Diseases), Carlos III Health Institute, Madrid, Spain
| | - Itxaso Rica
- Paediatric Endocrinology Unit, BioCruces Health Research Institute, Hospital Universitario Cruces, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Plaza de Cruces s/n, 48903 Barakaldo, Bizkaia, Spain; CIBERER (Center for Biomedical Research on Rare Diseases), Carlos III Health Institute, Madrid, Spain
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17
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Labastida I, Armienta MA, Lara-Castro RH, Aguayo A, Cruz O, Ceniceros N. Treatment of mining acidic leachates with indigenous limestone, Zimapan Mexico. J Hazard Mater 2013; 262:1187-1195. [PMID: 22819958 DOI: 10.1016/j.jhazmat.2012.07.006] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 06/29/2012] [Accepted: 07/02/2012] [Indexed: 06/01/2023]
Abstract
An experimental study to evaluate the potential of using indigenous limestones in a passive system to treat acid mine drainage, at a mining zone of Mexico was carried out. Chemical and mineralogical characteristics of four types of native rocks (KIT1, KIT2, KSS, QZ) showed distinct CaCO3 contents. Synthetic aqueous leachates from an old tailings impoundment had a pH of 2.18, 34 mg/L As, 705 mg/L Fetotal, and 3975 mg/L SO4(2-). To evaluate dissolution behavior of rocks, kinetic batch experiments with an acid Fe-rich solution were performed. Decaying kinetic constants adjusting H(+) concentration to a first order exponential process were: KIT1 (k = 2.89), KIT2 (k = 0.89) and KSS (k = 0.47). Infrared spectrum and XRD of precipitates showed schwertmannite formation. To determine As and heavy metals (Fe, Cd, Zn, Al) removal from the synthetic leachates, batch experiments using KIT1 were developed. Arsenic decreased from 34.00 mg/L to 0.04 mg/L, Fe and Al were totally removed, and concentrations of Zn and Cd decreased 88% and 91% respectively. Analyses by IR and SEM-EDS indicate that co-precipitation with Fe-Hydroxides formed upon leachate interaction with limestone is the main As removal process. Chamosite, identified by XRD may participate in the removal of Al, SiO2 and a fraction of Fe.
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Affiliation(s)
- I Labastida
- Universidad Nacional Autónoma de México, Posgrado en Ciencias de la Tierra, UNAM, Mexico, DF., 04510, Mexico
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Aguayo A, Grau G, Vela A, Aniel-Quiroga A, Espada M, Martul P, Castaño L, Rica I. Urinary iodine and thyroid function in a population of healthy pregnant women in the North of Spain. J Trace Elem Med Biol 2013; 27:302-6. [PMID: 23992867 DOI: 10.1016/j.jtemb.2013.07.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 05/30/2013] [Accepted: 07/06/2013] [Indexed: 11/24/2022]
Abstract
BACKGROUND Iodine is an essential trace element for the synthesis of thyroid hormones, which are keys in maternal metabolism during pregnancy as well as in neurological development during fetal and postnatal life. This was a prospective study on iodine status and thyroid function in women during pregnancy in the Basque country to assess whether there was any relationship among maternal urinary iodine, maternal thyroid function and thyrotropin (TSH) in newborns, and to explore any difference in women experiencing miscarriages. METHODS We analyzed TSH, free T(4) (FT(4)), free T(3) (FT(3)), thyroid peroxidase antibody (TPO-Ab) titers in serum and urinary iodine concentrations (UIC) in 2104 women in the first trimester of pregnancy and in 1322 of them in their second trimester. We obtained neonatal TSH levels in 1868 cases. RESULTS In the first (T1) and second trimesters (T2), the median UICs were 88.5 μg/L and 140 μg/L, respectively. No relationship was found between UIC and FT4, or maternal and neonatal TSH. In T1 and T2, 9.7% and 7.5% of women were TPO-Ab positive, respectively. The total miscarriage rate was 10%. The percentage of miscarriages in healthy women was 8.9%, lower than in women with overt hypothyroidism (21.2%; p < 0.001) and than in women with subclinical hypothyroidism (15.6%; p < 0.025). The miscarriage rate was not higher in TPO-Ab-positive women. CONCLUSIONS In this study most women had iodine deficiency during pregnancy. Neonatal TSH is not correlated with maternal UIC during pregnancy. Pregnant women with hypothyroidism have a higher rate of miscarriages.
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Affiliation(s)
- Anibal Aguayo
- Paediatric Endocrinology Section, Cruces University Hospital, UPV/EHU, Plaza de Cruces s/n, 48903 Barakaldo-Bizkaia, Spain; CIBERER (Center for Biomedical Research on Rare Diseases), Instituto de Salud Carlos III, Barcelona, Spain
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Armienta M, Talavera O, Villaseñor G, Espinosa E, Pérez-Martínez I, Cruz O, Ceniceros N, Aguayo A. Environmental behaviour of metals from tailings in shallow rivers: Taxco, central Mexico. ACTA ACUST UNITED AC 2013. [DOI: 10.1179/037174504225004510] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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20
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Segura A, Gregoric I, Radovancevic R, Aguayo A, Buja L, Frazier O. 744 Variability in Fibrosis of Tissue Samples Obtained after Diaphragmatic and Apical LVAD Implantation. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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21
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Aguayo A, M. Armillas-Canseco F, Martinez-Banos D. Antiangiogenesis in Myelodysplastic Syndrome. Curr Cancer Drug Targets 2011; 11:1044-52. [DOI: 10.2174/156800911798073104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 09/22/2011] [Accepted: 09/22/2011] [Indexed: 11/22/2022]
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22
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de las Heras J, Garin I, de Nanclares GP, Aguayo A, Rica I, Castaño L, Vela A. Familial hyperinsulinism-hyperammonemia syndrome in a family with seizures: case report. J Pediatr Endocrinol Metab 2010; 23:827-30. [PMID: 21073125 DOI: 10.1515/jpem.2010.132] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [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] [Indexed: 11/15/2022]
Abstract
Hyperinsulinism-hyperammonemia (HI/HA) syndrome is the second most frequent cause of congenital hyperinsulinism (CHI) and it is characterized by recurrent symptomatic hypoglycemia and persistent hyperammonemia. We describe the familial case of a 2-year-old child and her 32-year-old mother who, having suffered from tonic-clonic seizures since infancy, had both been diagnosed with epilepsy and treated with sodium valproate. Hypoglycemia was identified in the child in routine analysis. Six days after admission, a complete study of hypoglycemia showed test results compatible with hyperinsulinemic hypoglycemia and hyperammonemia. A mutation in the GDH gene (Arg269His) confirmed the diagnosis in both the mother and the child. An important peculiarity of this case is the diagnosis of a 32-year-old woman, previously diagnosed with epilepsy through her daughter's diagnosis at a Pediatric Endocrinology Department and subsequently treated ineffectively with sodium valproate. We conclude that, as hypoglycemia may be subtle, the diagnosis of HI/HA should be considered in children or adults with seizures/epilepsy and hyperammonemia, serum ammonia being a simple screening test for the disease.
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Affiliation(s)
- Javier de las Heras
- Endocrinology and Diabetes Research Group, Cruces Hospital, CIBERDEM CIBERER Barakaldo, Vizcaya, Spain
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23
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Hurtado-Monroy R, Vargas P, Martinez A, Cruz J, Enriquez V, Gutierrez O, Candelaria M, Aguayo A, Cervera E. Imatinib (I) compared to I + cytarabine (Ara-C) for the frontline treatment of chronic phase (CP) chronic myeloid leukemia (CML). J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.7048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
7048 Background: Imatinib is now worldwide accepted as the standard frontline therapy of CP CML. Regardless of their impressive clinical results and low toxicity profile, a small proportion of CP CML patients could develop primary or secondary resistance. Main objective of present trial was to increase the hematological (HR) and major cytogenetical responses (MCR) with the addition of Ara-C to standard doses of I as a frontline therapy of CP CML. Methods: on September, 2003 we began this multicentric, phase III randomized, clinical trial, comparing I (400 mg/day) vs I (400 mg/day) plus subcutaneous Ara-C (10 mg/m2/day, for 10 days/monthly cycles), doses could be adjusted due to tolerance and toxicity. Inclusion criteria: newly diagnosed CP CML, not elective to allogeneic transplant. Primary endpoint was the acquisition and time to acquisition of HR, MCR by conventional criteria. Secondary endpoints were main toxicities, dead to progression and overall survival. Results: 61 patients were randomized with median follow-up of 850 days (range 85–1151) for entire group. Table 1 shows results for both treatment arms. Table 1 Both treatment arms were well tolerated and the toxicity profile was low and manageable. Statistical analysis (chi- square, paired T-student, Log-rank survival analysis) did not show significant differences among treatment arms. Conclusions: The addition of cytarabine to conventional I doses on frontline therapy CP CML does not produce significant benefit on HR or MHR. Larger I doses or other therapeutic options should be explored. [Table: see text] [Table: see text]
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Affiliation(s)
- R. Hurtado-Monroy
- Hospital Angeles Del Pedregal, Mexico City, Mexico; Instituto Nacional de Cancerologia, Mexico, D.F, Mexico; Instituto Nacional de Nutricion, Mexico, D.F., Mexico
| | - P. Vargas
- Hospital Angeles Del Pedregal, Mexico City, Mexico; Instituto Nacional de Cancerologia, Mexico, D.F, Mexico; Instituto Nacional de Nutricion, Mexico, D.F., Mexico
| | - A. Martinez
- Hospital Angeles Del Pedregal, Mexico City, Mexico; Instituto Nacional de Cancerologia, Mexico, D.F, Mexico; Instituto Nacional de Nutricion, Mexico, D.F., Mexico
| | - J. Cruz
- Hospital Angeles Del Pedregal, Mexico City, Mexico; Instituto Nacional de Cancerologia, Mexico, D.F, Mexico; Instituto Nacional de Nutricion, Mexico, D.F., Mexico
| | - V. Enriquez
- Hospital Angeles Del Pedregal, Mexico City, Mexico; Instituto Nacional de Cancerologia, Mexico, D.F, Mexico; Instituto Nacional de Nutricion, Mexico, D.F., Mexico
| | - O. Gutierrez
- Hospital Angeles Del Pedregal, Mexico City, Mexico; Instituto Nacional de Cancerologia, Mexico, D.F, Mexico; Instituto Nacional de Nutricion, Mexico, D.F., Mexico
| | - M. Candelaria
- Hospital Angeles Del Pedregal, Mexico City, Mexico; Instituto Nacional de Cancerologia, Mexico, D.F, Mexico; Instituto Nacional de Nutricion, Mexico, D.F., Mexico
| | - A. Aguayo
- Hospital Angeles Del Pedregal, Mexico City, Mexico; Instituto Nacional de Cancerologia, Mexico, D.F, Mexico; Instituto Nacional de Nutricion, Mexico, D.F., Mexico
| | - E. Cervera
- Hospital Angeles Del Pedregal, Mexico City, Mexico; Instituto Nacional de Cancerologia, Mexico, D.F, Mexico; Instituto Nacional de Nutricion, Mexico, D.F., Mexico
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Armienta M, Rodríguez C, Ongley L, Brust H, Morales F, Aguayo A, Cruz O, Ceniceros N. Origin and fate of arsenic in a historic mining area of Mexico. Trace Metals and other Contaminants in the Environment 2007. [DOI: 10.1016/s1875-1121(06)09018-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Martul P, Rica I, Vela A, Aguayo A. Clinical evaluation and health care in childhood and adolescent obesity. J Pediatr Endocrinol Metab 2005; 18 Suppl 1:1207-13. [PMID: 16398451 DOI: 10.1515/jpem.2005.18.s1.1207] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- P Martul
- Department of Pediatric Endocrinology, Hospital de Cruces, Cruces, Barakaldo (Vizcaya), Spain.
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Arrieta O, Cacho B, Domville D, Aguayo A, Leon-Rodriguez E. The progressive elevation of alpha fetoprotein as diagnostic test of hepatocellular carcinoma. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.4160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- O. Arrieta
- Inst Nacional Ciencias Medicas y Nutricion, Mexico City, Mexico
| | - B. Cacho
- Inst Nacional Ciencias Medicas y Nutricion, Mexico City, Mexico
| | - D. Domville
- Inst Nacional Ciencias Medicas y Nutricion, Mexico City, Mexico
| | - A. Aguayo
- Inst Nacional Ciencias Medicas y Nutricion, Mexico City, Mexico
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Aguayo A, Mazin II, Singh DJ. Why Ni3Al is an itinerant ferromagnet but Ni3Ga is not. Phys Rev Lett 2004; 92:147201. [PMID: 15089568 DOI: 10.1103/physrevlett.92.147201] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2003] [Revised: 10/31/2003] [Indexed: 05/24/2023]
Abstract
Ni3Al and Ni3Ga are closely related materials on opposite sides of a ferromagnetic quantum critical point. The Stoner factor of Ni is virtually the same in both compounds and the density of states is larger in Ni3Ga. Thus in Stoner theory it should be more magnetic, and in local-density approximation (LDA) calculations it is. However, experimentally it is a paramagnet, while Ni3Al is an itinerant ferromagnet. We show that critical spin fluctuations are stronger in Ni3Ga, due to weaker q dependence of the susceptibility, and this effect is enough to reverse the trend. The approach combines LDA calculations with Landau theory and the fluctuation-dissipation theorem using the same momentum cutoff for both compounds. The calculations provide evidence for strong, beyond LDA, spin fluctuations associated with the critical point in both materials, but stronger in Ni3Ga than in Ni3Al.
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Affiliation(s)
- A Aguayo
- Center for Computational Materials Science, Naval Research Laboratory, Washington, D.C. 20375, USA
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Abstract
While surgical resection and tumor ablation are the preferred therapies for hepatocellular carcinoma (HCC), these are available or appropriate in only a minority of patients. This reflects the usual comorbidity of severe underlying liver disease that either precludes surgery or makes the surgical approach extremely dangerous. Nonetheless, regional control of HCC is highly relevant and many regional strategies have been explored, including hepatic intra-arterial chemotherapy transarterial chemoembolization, lipiodol chemoembolization, radiation therapy, cryosurgery, percutaneous ethanol injection, and radiofrequency ablation. In addition, a variety of systemic chemotherapeutic agents have been tested in HCC, including various combinations of 5-fluorouracil, doxorubicin, epirubicin, etoposide, cisplatin, and mitoxantrone, as well as interferon, tamoxifen, capecitabine, thalidomide, and octreotide. Published data regarding these regional and systemic therapies will be discussed in this review.
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Affiliation(s)
- A Aguayo
- Division of Medicine, Department of Medical Oncology, The University of Texas, M.D. Anderson Cancer Center, Houston, TX 77030, USA
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29
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Verstovsek S, Kantarjian H, Aguayo A, Manshouri T, Freireich E, Keating M, Estey E, Albitar M. Significance of angiogenin plasma concentrations in patients with acute myeloid leukaemia and advanced myelodysplastic syndrome. Br J Haematol 2001; 114:290-5. [PMID: 11529846 DOI: 10.1046/j.1365-2141.2001.02921.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [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: 11/20/2022]
Abstract
Human angiogenin is a potent inducer of angiogenesis. The association between angiogenin and cancer progression and poor outcome in solid tumours has been documented, but its significance in leukaemias has not been evaluated. We evaluated plasma angiogenin levels in 101 previously untreated patients with acute myeloid leukaemia (AML) (59 patients) and advanced myelodysplastic syndrome (MDS) (42 patients). Angiogenin levels were significantly higher in AML and advanced MDS patients than in healthy individuals (P < 0.00001). Angiogenin levels were also significantly higher in advanced MDS than in AML (P = 0.001). Higher levels of angiogenin correlated with prolonged survival periods in both AML and advanced MDS patients (P = 0.02 and 0.01 respectively). We found no correlation between angiogenin plasma level and various patient characteristics, including age, performance status, antecedent haematological disorder, haemoglobin, white blood cell and platelet counts, and poor prognosis cytogenetics. There was no significant correlation between angiogenin level and complete remission rate and duration in AML or advanced MDS patients. In multivariate analysis, angiogenin concentration retained its significance as a prognostic factor in AML (P = 0.03), together with age (P = 0.00007) and haemoglobin (P = 0.03).
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Affiliation(s)
- S Verstovsek
- Department of Leukemia, The University of Texas, M. D. Anderson Cancer Center, Houston, TX 77030, USA
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30
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Verstovsek S, Kantarjian H, Estey E, Aguayo A, Giles FJ, Manshouri T, Koller C, Estrov Z, Freireich E, Keating M, Albitar M. Plasma hepatocyte growth factor is a prognostic factor in patients with acute myeloid leukemia but not in patients with myelodysplastic syndrome. Leukemia 2001; 15:1165-70. [PMID: 11480557 DOI: 10.1038/sj.leu.2402182] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [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: 11/09/2022]
Abstract
Hepatocyte growth factor (HGF) is a potent angiogenic factor. The aim of our study was to evaluate plasma HGF levels and their prognostic significance in patients with newly diagnosed acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS). The sandwich enzyme immunoassay technique was used to quantify HGF in stored samples obtained before treatment from patients with AML (59 patients) and MDS (42 patients) treated at The University of Texas MD Anderson Cancer Center. HGF levels were significantly higher in patients with AML or MDS than in healthy individuals (P < 0.0001). Higher HGF levels in both AML and MDS correlated significantly with white blood cell (P = 0.000001 for both groups) and monocyte counts (P = 0.0004 and 0.003, respectively), and with poor performance status (P = 0.03 and 0.001, respectively). Using Cox proportional hazard model and HGF levels as a continuous variable, plasma levels of HGF correlated with shorter survival of AML (P = 0.001), but not MDS (P = 0.34) patients. No significant correlation was observed between HGF levels and complete remission rate or duration. In the multivariate analysis HGF retained its significance as prognostic factor in AML (P = 0.02), along with age (P = 0.0005).
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Affiliation(s)
- S Verstovsek
- Department of Leukemia, University of Texas MD Anderson Cancer Center, Houston 77030, USA
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Abstract
The prognosis of patients with HCC remains dismal. Even in the subgroups of patients who have the most favorable characteristics and are eligible for surgical resection, the 5-year survival rate is less than 25%. For patients with more advanced disease, the median survival time is less than 1 year. The good news in HCC research is that the disease can be prevented. In Taiwan, the rate of HCC in children aged 6 to 9 years decreased from 5.2 per million population before the neonatal vaccination program began in 1984 to 1.3 per million population in the first vaccinated cohort. Treatment of viral hepatitis with IFN may decrease the rates of long-term development of HCC. Other agents that may prevent second primary tumors following resection of HCC, such as polyprenoic acid and acylic retinoid, are also being investigated.
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Affiliation(s)
- A Aguayo
- Department of Gastrointestinal Medical Oncology, Division of Medicine, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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Aguayo A, Manshouri T, O'Brien S, Keating M, Beran M, Koller C, Kantarjian H, Rogers A, Albitar M. Clinical relevance of Flt1 and Tie1 angiogenesis receptors expression in B-cell chronic lymphocytic leukemia (CLL). Leuk Res 2001; 25:279-85. [PMID: 11248324 DOI: 10.1016/s0145-2126(00)00139-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Angiogenesis, a complex process tightly controlled by several molecules including vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF) along with their receptors, plays a major role in the growth and metastasis of solid tumors. The expression and production of VEGF and bFGF have been documented in numerous solid tumors and hematopoietic neoplasms. Having recently shown increased expression of cellular VEGF in the leukemic cells of patients with chronic lymphocytic leukemia (CLL) we decided to investigate the expression of angiogenic receptors Flt1 and Tie1. Levels of Tie1 and Flt1 proteins were measured in leukemic cells from 231 patients with B-cell CLL using Western blot analysis and solid-phase radioimmunoassay (RIA). A strong correlation was found between Flt1 and Tie1 levels and white blood cell count (WBC) and absolute lymphocyte counts. Levels of Flt1 but not Tie1 correlated with levels of cellular VEGF. Interestingly, Tie1 correlated well with Rai stage (P=0.04). Flt1 and Tie1 did not correlate with survival, although when we evaluated the patients with early disease (Rai stage 0-II), higher levels of Tie1 but not of Flt1 correlated with worse survival. These data suggest that Tie1 plays a role in the early stages of B-cell CLL and as the disease progresses, the tumor cells become independent from the effects of Tie1. Further studies are now needed to dissect the mechanisms responsible for this phenomenon.
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MESH Headings
- Actuarial Analysis
- Adult
- Aged
- Aged, 80 and over
- Disease Progression
- Female
- Humans
- Leukemia, Lymphocytic, Chronic, B-Cell/blood
- Leukemia, Lymphocytic, Chronic, B-Cell/diagnosis
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Leukocyte Count
- Leukocytes, Mononuclear/metabolism
- Leukocytes, Mononuclear/pathology
- Male
- Middle Aged
- Neovascularization, Pathologic/blood
- Prognosis
- Proto-Oncogene Proteins/metabolism
- Receptor Protein-Tyrosine Kinases/metabolism
- Receptor, TIE-1
- Receptors, Cell Surface/metabolism
- Receptors, Growth Factor/metabolism
- Receptors, TIE
- Statistics, Nonparametric
- Survival Rate
- Vascular Endothelial Growth Factor Receptor-1
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Affiliation(s)
- A Aguayo
- Department of Leukemia, The University of Texas, M.D. Anderson Cancer Center, 1515 Holcombe Boulevard, Box 72, Houston, TX , 77030-4095, USA
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Abstract
Given the poor prognosis of HCC and the therapeutic challenge posed by underlying liver cirrhosis, efforts and resources must be directed towards preventive strategies. Return on the investment in such research is likely to be greater than can be expected from treatment of advanced disease.
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Affiliation(s)
- A Aguayo
- Department of Medical Oncology, University of Texas, M.D. Anderson Cancer Center, Houston, Texas, USA
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Armienta MA, Morton O, Rodríguez R, Cruz O, Aguayo A, Ceniceros N. Chromium in a tannery wastewater irrigated area, León Valley, Mexico. Bull Environ Contam Toxicol 2001; 66:189-195. [PMID: 11116314 DOI: 10.1007/s0012800224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- M A Armienta
- Geophysics Institute, National Autonomous University of Mexico, Circuito Exterior C.U., México 04510 D.F., Mexico
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Cervantes J, Acoltzin C, Aguayo A. [Diagnosis and prevalence of arterial hypertension in persons under 19 years of age in the city of Colima]. Salud Publica Mex 2000; 42:529-32. [PMID: 11201581] [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: 02/19/2023] Open
Abstract
OBJECTIVE To assess the prevalence of high blood pressure among young children. MATERIAL AND METHODS This is a cross-sectional study, conducted in 1992 in Colima City, Mexico. Blood pressure readings were obtained from 400 children aged under 19. Statistical analysis consisted of calculation of means, variance, and Anova by group age. Association between age and blood pressure was assessed with correlation and determination coefficients. Comparisons by sex were made using Student's t, F, Mann-Whitney's U, and Z tests. Percentile 95th was used to define normal figures. RESULTS A lineal correlation coefficient was found and confirmed by the determination coefficient. Groups where this association was statistically significant at p < 0.01 were: a) children aged under 2; b) children from 2 to 13 years of age; and c) those over 13 years of age. High blood pressure figures for each group were: a) 92/50 mm/Hg; 110/70 mm/Hg; and 133/84 mm/Hg, respectively. CONCLUSIONS The prevalence of high blood pressure in younger children may be 8% for systolic pressure and 9% for diastolic pressure.
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Affiliation(s)
- J Cervantes
- Hospital General de Zona c/Unidad de Medicina Familiar Doctor Leonel Ramírez García, Instituto Mexicano del Seguro Social (IMSS), Colima, Colima, México
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Aguayo A, Kantarjian H, Manshouri T, Gidel C, Estey E, Thomas D, Koller C, Estrov Z, O'Brien S, Keating M, Freireich E, Albitar M. Angiogenesis in acute and chronic leukemias and myelodysplastic syndromes. Blood 2000. [PMID: 10979972 DOI: 10.1016/s0955-3886(00)00083-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Angiogenesis has been associated with the growth, dissemination, and metastasis of solid tumors. The aims of this study were to evaluate the vascularity and the levels of angiogenic factors in patients with acute and chronic leukemias and myelodysplastic syndromes (MDS). The numbers of blood vessels were measured in 145 bone marrow biopsies and the levels of vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF), tumor necrosis growth factor-alpha (TNF-alpha), tumor growth factor-alpha (TGF-alpha), and hepatocyte growth factor (HGF) were determined in 417 plasma samples. Except for chronic lymphocytic leukemia (CLL), vascularity was significantly higher in all leukemias and MDS compared with control bone marrows. The highest number of blood vessels and largest vascular area were found in chronic myeloid leukemia (CML). VEGF, bFGF, and HGF plasma levels were significantly increased in acute myeloid leukemia (AML), CML, CLL, chronic myelomonocytic leukemia (CMML), and MDS. HGF, TNF-alpha, and bFGF but not VEGF were significantly increased in acute lymphoblastic leukemia (ALL). TNF-alpha levels were significantly increased in all diseases except for AML and MDS. No significant increase was found in TGF-alpha in any leukemia or MDS. The highest plasma levels of VEGF were in CML, and the highest plasma levels of bFGF were in CLL. The levels of HGF were highest in CMML. These data suggest that vascularity and angiogenic factors are increased in leukemias and MDS and may play a role in the leukemogenic process.
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Affiliation(s)
- A Aguayo
- Departments of Leukemia, Hematopathology, and Bioimmunotherapy, University of Texas, M.D. Anderson Cancer Center, Houston, TX 77030-4095, USA
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Aguayo A, O'Brien S, Keating M, Manshouri T, Gidel C, Barlogie B, Beran M, Koller C, Kantarjian H, Albitar M. Clinical relevance of intracellular vascular endothelial growth factor levels in B-cell chronic lymphocytic leukemia. Blood 2000; 96:768-70. [PMID: 10887147] [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: 02/17/2023] Open
Abstract
Strong evidence exists for an association between high vascular endothelial growth factor (VEGF) levels and poor prognoses in patients with solid tumors and acute leukemia. Using Western blot analysis and solid-phase radioimmunoassay, we measured cellular VEGF levels in B-cell chronic lymphocytic leukemia (CLL) samples from 225 patients and correlated these levels with disease characteristics and prognoses. The median VEGF level in CLL samples was 7.26 times the median level detected in normal peripheral blood mononuclear cells. Patients with lower levels of VEGF protein showed a trend toward shorter survival (P =.07). However, in a subgroup of CLL patients with good prognoses or early-stage disease (Rai stages 0-II, Binet stages A,B; beta2-M </= 2.8 mg/dL), lower levels of VEGF were associated with shorter survival times. For the entire group of patients, no correlation was found between VEGF levels and beta2-M levels or Rai and Binet stage. Most samples from patients with CLL expressed the 43-kd VEGF isoform in addition to the commonly expressed 45-kd isoform. It remains to be seen whether the expression of the 43-kd isoform is responsible for this reversed correlation with outcome. (Blood. 2000;96:768-770)
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Blotting, Western
- Endothelial Growth Factors/blood
- Humans
- Intracellular Fluid/chemistry
- Leukemia, Lymphocytic, Chronic, B-Cell/metabolism
- Leukemia, Lymphocytic, Chronic, B-Cell/mortality
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Lymphokines/blood
- Middle Aged
- Prognosis
- Survival Rate
- Vascular Endothelial Growth Factor A
- Vascular Endothelial Growth Factors
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Affiliation(s)
- A Aguayo
- Departments of Leukemia and Hematopathology, University of Texas MD Anderson Cancer Center, Houston, TX 77030-4095, USA
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Aguayo A, Estey E, Kantarjian H, Mansouri T, Gidel C, Keating M, Giles F, Estrov Z, Barlogie B, Albitar M. Cellular vascular endothelial growth factor is a predictor of outcome in patients with acute myeloid leukemia. Blood 1999; 94:3717-21. [PMID: 10572084] [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: 02/14/2023] Open
Abstract
Vascular endothelial growth factor (VEGF) is a potent mitogen for vascular endothelial cells. It has been associated with angiogenesis, growth, dissemination, metastasis, and poor outcome in solid tumors. To assess cellular VEGF levels and their prognostic significance in newly diagnosed acute myeloid leukemia (AML), we used a radioimmunoassay (RIA) to quantify VEGF levels in stored samples obtained before treatment from 99 patients with newly diagnosed AML treated at the MD Anderson Cancer Center from 1996 to 1998. Outcome in the 99 patients was representative of that observed in all patients seen at this institution with this diagnosis during these years, but the 99 patients had higher white blood cell (WBC) and blast counts than the other patients. Results of the RIA were confirmed by Western blot. There was a relationship between increasing VEGF levels and shorter survival (P =.01), as well as shorter disease-free survival, both from start of treatment and from complete response (CR) date. In contrast, there was no relationship between VEGF level and WBC or blast count, or between VEGF level and such established prognostic factors as age, cytogenetics, performance status, or presence of an antecedent hematologic disorder, and multivariate analysis indicated that VEGF was still prognostic for the above outcomes after accounting for these factors, as well as treatment. Our results suggest that at least in AML patients with higher WBC and blast counts, cellular VEGF level is an independent predictor of outcome.
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Affiliation(s)
- A Aguayo
- Departments of Leukemia and Laboratory Medicine, the University of Texas MD Anderson Cancer Center, Houston, TX 77030-4095, USA
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Aguayo A, Cortes J, Thomas D, Pierce S, Keating M, Kantarjian H. Combination therapy with methotrexate, vincristine, polyethylene-glycol conjugated-asparaginase, and prednisone in the treatment of patients with refractory or recurrent acute lymphoblastic leukemia. Cancer 1999; 86:1203-9. [PMID: 10506705 DOI: 10.1002/(sici)1097-0142(19991001)86:7<1203::aid-cncr15>3.0.co;2-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.8] [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: 11/08/2022]
Abstract
BACKGROUND L-asparaginase in combination with methotrexate has synergistic antileukemic activity in a schedule-dependent fashion. A new preparation of L-asparaginase, polyethylene-glycol conjugated (PEG)-asparaginase, is a pharmacologically different formulation of L-asparaginase with distinct properties including a longer half-life and less immunogenic properties. METHODS Patients with refractory or recurrent acute lymphoblastic leukemia (ALL) were treated with a combination of methotrexate (MTX), vincristine, PEG-asparaginase, and prednisone (MOAP). The treatment was comprised of MTX, 100 mg/m(2) intravenously (i.v.), over 15 minutes on Days 1 and 14; PEG-asparaginase, 2500 IU/m(2), with a maximum dose of 3750 IU i.v. approximately 4-6 hours after MTX on Days 1 and 14; vincristine, 1.4 mg/m(2) (maximum dose, 2 mg) i.v., over 15 minutes on Days 1, 7, and 14; and prednisone, 200 mg daily orally, on Days 1-5 and 14-19. RESULTS Thirty-two patients with a median age of 34 years (range, 20-74 years) were treated. Eight patients (25%) had ALL that was refractory to prior therapy and 24 patients (75%) had recurrent disease. Seven patients (22%) achieved a complete remission (CR). Five patients (16%) died early due to infections. Features associated with a poor response were high pretreatment lactate dehydrogenase levels and Philadelphia chromosome positive disease. The median duration of CR was 16 weeks and the overall median survival after MOAP therapy was 12 weeks. Anaphylactic reactions were not observed during MOAP combination therapy. CONCLUSIONS MOAP is an active regimen in patients with refractory or recurrent ALL. This regimen is well tolerated and is not associated with allergic reactions. However, further studies regarding the pharmacologic interaction of MTX with PEG-asparaginase are needed to optimize this regimen.
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Affiliation(s)
- A Aguayo
- The Department of Leukemia, The University of Texas, M. D. Anderson Cancer Center, Houston, Texas 77030, USA
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Aguayo A, Cortes JE, Kantarjian HM, Beran M, Gandhi V, Plunkett W, Kurtzberg J, Keating MJ. Complete hematologic and cytogenetic response to 2-amino-9-beta-D-arabinosyl-6-methoxy-9H-guanine in a patient with chronic myelogenous leukemia in T-cell blastic phase: a case report and review of the literature. Cancer 1999; 85:58-64. [PMID: 9921974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
BACKGROUND T-cell lymphoid blastic phase (BP) transformation is rare in chronic myelogenous leukemia (CML). 2-amino-9-beta-D-arabinosyl-6-methoxy-9H-guanine (GW506U78), a prodrug of arabinosylguanine (ara-G), is effective in T-cell leukemias. METHODS The authors present a case of a 48-year-old male with Philadelphia chromosome (Ph) positive CML and T-cell lymphoid BP after 17 months in the chronic phase. RESULTS Plasma pharmacokinetic studies after an infusion of GW506U78 at a dose of 40 mg/kg showed GW506U78 concentrations of 60 microM, and a peak ara-G concentration of 260 microM in the plasma. Cellular ara-G triphosphate (ara-GTP) concentration in the peripheral blood T-lymphoblasts was 80 microM at the end of GW506U78 infusion and reached a maximum of 150 microM. The patient achieved a complete response that lasted 13 months. Severe neurotoxicity related to GW506U78 was observed. CONCLUSIONS GW506U78 showed antileukemic activity against Ph positive T-cell BP CML. Neurotoxicity was dose-limiting in this patient. Treatment with GW506U78 and modulation of ara-GTP concentrations are therapeutic strategies that require further exploration in T-cell malignancies. Investigation of other dosing schedules may limit neurotoxicity.
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Affiliation(s)
- A Aguayo
- Department of Leukemia, The University of Texas M.D. Anderson Cancer Center, Houston 77030, USA
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Medrano L, Salinas M, Salas I, Guevara PLD, Aguayo A, Jacobsen J, Baker CS. Sex identification of humpback whales, Megaptera novaeangliae, on the wintering grounds of the Mexican Pacific Ocean. CAN J ZOOL 1994. [DOI: 10.1139/z94-239] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The sex of 43 humpback whales (Megaptera novaeangliae) from different social groupings in the Mexican Pacific was identified by a molecular analysis of skin biopsy samples. Of the 18 whales sampled from surface-active groups, 17 were males. Three singers were sampled and identified as males. In two cases, whales interrupting and joining a singer without exhibiting agonistic behavior were identified as females. A higher proportion of males was found in the samples collected at the Revillagigedo Islands, reflecting a greater sampling effort on surface-active groups. Preliminary data showed that along the Mexican Pacific coast, the migratory arrival of males corresponds closely to the timing of competitive activity.
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Aguayo A, Altamirano C, Baader T, García M, Aguayo G. [Hemobilia caused by ruptured hepatic artery aneurysm]. Rev Med Chil 1994; 122:691-3. [PMID: 7732215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We report two patients with hemobilia caused by hepatic artery aneurism that ruptured to the biliary tract. In the first patient, the diagnosis was made during an exploratory laparotomy. In the second patient, the aneurism was diagnosed with a selective hepatic artery arteriography and embolized during the procedure. The evolution of both patients was satisfactory.
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Affiliation(s)
- A Aguayo
- Servicio de Cirugía, Hospital del Salvador, Santiago de Chile
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Aguayo A, Giordano J, Cox P, Lira E, Arellano L. [Lipoma of the mediastinum. A clinical case]. Rev Med Chil 1988; 116:1298-301. [PMID: 3267918] [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: 01/05/2023]
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Abstract
The interrelation of Schwann cells in developing rat cervical sympathetic trunk was studied by measuring distances between consecutive Schwann cell nuclei in teased unmyelinated nerve fiber bundles (Remak fibers). From 300 to 400 inter-nuclear Schwann cell distances (INDs) were measured at ten days and 2, 4, 5, 6, 8, 12, and 16 weeks after birth. Median INDs increased from 54mum at ten days to reach adult values (90mum to 100mum) at 16 weeks of age. Mean axonal diameters measured in the contralateral cervical sympathetic trunk increased from 0.57mum to 0.69mum during the same period. Developmental changes in median INDs of Schwann cells correlated significantly with age but did not parallel increases in axonal diameter.
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Orgel M, Aguayo A, Williams HB. Sensory nerve regeneration: an experimental study of skin grafts in the rabbit. J Anat 1972; 111:121-35. [PMID: 4552753 PMCID: PMC1271117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Aguayo A, Nair CP, Midgley R. Experimental progressive compression neuropathy in the rabbit. Histologic and electrophysiologic studies. Arch Neurol 1971; 24:358-64. [PMID: 4323377 DOI: 10.1001/archneur.1971.00480340090010] [Citation(s) in RCA: 83] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Soledad Córdova M, Pirofsky B, Aguayo A, Sentíes LM. [Studies in man on acquired immunologic tolerance]. GAC MED MEX 1968; 98:1468-76. [PMID: 5753565] [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: 01/16/2023] Open
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Rosenthall L, Aguayo A, Stratford J. A clinical assessment of carotid and vertebral artery injection of macroaggregates of radioiodinated albumin (MARIA) for brain scanning. Radiology 1966; 86:499-505. [PMID: 5931778 DOI: 10.1148/86.3.499] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Rosenthall L, Aguayo A, Stratford J. Vertebral artery injection of macroaggregates of radioiodinated albumin for brain scanning. A preliminary report. J Can Assoc Radiol 1965; 16:204-7. [PMID: 5830714] [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: 01/16/2023]
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