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Archives of Medical Research

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https://www.readbyqxmd.com/read/28476198/copy-number-alterations-associated-with-acute-lymphoblastic-leukemia-in-mexican-children-a-report-from-the-mexican-inter-institutional-group-for-the-identification-of-the-causes-of-childhood-leukemia
#1
Beatriz Rosales-Rodríguez, Fernando Fernández-Ramírez, Juan Carlos Núñez-Enríquez, Ana Claudia Velázquez-Wong, Aurora Medina-Sansón, Elva Jiménez-Hernández, Janet Flores-Lujano, José Gabriel Peñaloza-González, Rosa Martha Espinosa-Elizondo, María Luisa Pérez-Saldívar, José Refugio Torres-Nava, Jorge Alfonso Martín-Trejo, Gabriela Bibiana Martínez-Morales, Vilma Carolina Bekker-Méndez, Juan Manuel Mejía-Aranguré, Haydee Rosas-Vargas
B-cell precursor acute lymphocytic leukemia (B-ALL) represents a worldwide public health issue. Particularly, Mexico is one of the countries with the highest incidence of ALL in children. Between the multiple factors involved in ALL etiology, genetic alterations are clearly one of the most relevant features. In this work, a group of 24 B-ALL patients, all negative for the four most frequent gene fusions (ETV6-RUNX1, BCR-ABL1, TCF3-PBX1 and MLL-AF4), were included in a high-resolution microarray analysis in order to evaluate genomic copy-number alterations (CNAs)...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28476197/road-traffic-pollution-and-childhood-leukemia-a-nationwide-case-control-study-in-italy
#2
Corrado Magnani, Alessandra Ranucci, Chiara Badaloni, Giulia Cesaroni, Daniela Ferrante, Lucia Miligi, Stefano Mattioli, Roberto Rondelli, Luigi Bisanti, Paola Zambon, Santina Cannizzaro, Paola Michelozzi, Pierluigi Cocco, Egidio Celentano, Giorgio Assennato, Domenico Franco Merlo, Paola Mosciatti, Liliana Minelli, Marina Cuttini, Maria Valeria Torregrossa, Susanna Lagorio, Riccardo Haupt, Francesco Forastiere
BACKGROUND: The association of childhood leukemia with traffic pollution was considered in a number of studies from 1989 onwards, with results not entirely consistent and little information regarding subtypes. AIM OF THE STUDY: We used the data of the Italian SETIL case-control on childhood leukemia to explore the risk by leukemia subtypes associated to exposure to vehicular traffic. METHODS: We included in the analyses 648 cases of childhood leukemia (565 Acute lymphoblastic-ALL and 80 Acute non lymphoblastic-AnLL) and 980 controls...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28476196/parental-exposure-to-workplace-carcinogens-and-the-risk-of-development-of%C3%A2-acute-leukemia-in-infants-case-control-study
#3
María Luisa Pérez-Saldivar, Arturo Fajardo-Gutiérrez, José Alfredo Sierra-Ramírez, Nancy Núñez-Villegas, Héctor Pérez-Lorenzana, Elisa María Dorantes-Acosta, Pedro Francisco Román-Zepeda, María Del Carmen Rodríguez-Zepeda, Juana Esther González-Ulivarri, Norma López-Santiago, Sofía Irene Martínez-Silva, Rogelio Paredes-Aguilera, Martha Margarita Velázquez-Aviña, Janet Flores-Lujano, Elva Jiménez-Hernández, Juan Carlos Núñez-Enríquez, Vilma Carolina Bekker-Méndez, Juan Manuel Mejía-Aranguré
BACKGROUND AND AIMS: Occupational exposure of parents to carcinogens is of great interest in the etiology of leukemias. Evidence of the impact of such exposure on infants or small children is scarce. Here we estimated whether occupational exposure of parents to carcinogens could be a risk factor for leukemias in their children. METHODS: Cases of acute leukemia (AL) in infants ≤24 months old diagnosed in Mexico City (1998-2013) were included in a population-based, case-control study...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28476195/tobacco-smoke-and-ras-mutations-among-latino-and-non-latino-children-with-acute-lymphoblastic-leukemia
#4
Maneet Kaur, Adam J de Smith, Steve Selvin, Luoping Zhang, Marc Cunningham, Michelle W Kang, Helen M Hansen, Robert M Cooper, Roberta McKean-Cowdin, Joseph L Wiemels, Catherine Metayer
BACKGROUND AND AIMS: Childhood acute lymphoblastic leukemia (ALL) is a biologically heterogeneous disease, and mutations in the KRAS and NRAS oncogenes are present at diagnosis in about one-fifth of cases. Ras mutations were previously associated with environmental exposures in leukemias as well as in many other cancer types. This study examined whether Ras mutation could define a unique etiologic group of childhood ALL associated with tobacco smoke, a well-established mutagen and carcinogen...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28476194/results-of-treating-childhood-acute-lymphoblastic-leukemia-in-a-low-middle-income-country-10%C3%A2-year-experience-in-northeast-mexico
#5
José C Jaime-Pérez, Olga Nidia López-Razo, Gisela García-Arellano, Mónica Andrea Pinzón-Uresti, Raúl A Jiménez-Castillo, Oscar González-Llano, David Gómez-Almaguer
BACKGROUND AND AIMS: In high-income countries, treatment protocols for acute lymphoblastic leukemia (ALL) in children lead to a 5-year overall survival (OS) approaching 90%. There is scarce information on protocols and results of therapy from low-middle income countries (LMIC). We documented the results of treating children with ALL with two protocols in consecutive 5-year periods at a reference center in northeast Mexico. PATIENTS AND METHODS: Children ≤16 years of age diagnosed with ALL treated with two protocols were studied...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28476193/molecular-characterization-of-pediatric-acute-myeloid-leukemia-results-of%C3%A2-a-multicentric-study-in-brazil
#6
Francianne Gomes Andrade, Elda Pereira Noronha, Gisele Dallapicola Brisson, Filipe Dos Santos Vicente Bueno, Ingrid Sardou Cezar, Eugênia Terra-Granado, Luiz Claudio Santos Thuler, Maria S Pombo-de-Oliveira
BACKGROUND AND AIMS: The biological characterization of childhood acute myeloid leukemia (c-AML) is an important outcome predictor. In Brazil, very little is known about the frequency of AML subgroups, although c-AML accounts for about 18% of leukemias. We carried out this study to investigate the contribution of type I and II gene mutations in the probability of overall survival (pOS) of c-AML in Brazil. METHODS: Seven hundred and three de novo pediatric AML cases (2000-2015) were assessed throughout a multicentric network study...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28476192/gene-expression-profiling-of-acute-lymphoblastic-leukemia-in-children-with%C3%A2-very-early-relapse
#7
Juan Carlos Núñez-Enríquez, Diego Alberto Bárcenas-López, Alfredo Hidalgo-Miranda, Elva Jiménez-Hernández, Vilma Carolina Bekker-Méndez, Janet Flores-Lujano, Karina Anastacia Solis-Labastida, Gabriela Bibiana Martínez-Morales, Fausto Sánchez-Muñoz, Laura Eugenia Espinoza-Hernández, Martha Margarita Velázquez-Aviña, Laura Elizabeth Merino-Pasaye, Alejandra Jimena García Velázquez, María Luisa Pérez-Saldívar, Raúl Mojica-Espinoza, Julián Ramírez-Bello, Silvia Jiménez-Morales, Juan Manuel Mejía-Aranguré
BACKGROUND AND AIMS: Acute lymphoblastic leukemia (ALL) is the most common childhood cancer worldwide. Mexican patients have high mortality rates, low frequency of good prognosis biomarkers (i.e., ETV6-RUNX1) and a high proportion is classified at the time of diagnosis with a high risk to relapse according to clinical features. In addition, very early relapses are more frequently observed than in other populations. The aim of the study was to identify new potential biomarkers associated with very early relapse in Mexican ALL children through transcriptome analysis...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28476191/analysis-of-normal-hematopoietic-stem-and-progenitor-cell-contents-in-childhood-acute-leukemia-bone-marrow
#8
Juan Carlos Balandrán, Eduardo Vadillo, David Dozal, Alfonso Reyes-López, Antonio Sandoval-Cabrera, Merle Denisse Laffont-Ortiz, Jessica L Prieto-Chávez, Armando Vilchis-Ordoñez, Henry Quintela-Nuñez Del Prado, Héctor Mayani, Juan Carlos Núñez-Enríquez, Juan Manuel Mejía-Aranguré, Briceida López-Martínez, Elva Jiménez-Hernández, Rosana Pelayo
BACKGROUND AND AIMS: Childhood acute leukemias (AL) are characterized by the excessive production of malignant precursor cells at the expense of effective blood cell development. The dominance of leukemic cells over normal progenitors may result in either direct suppression of functional hematopoiesis or remodeling of microenvironmental niches, contributing to BM failure and AL-associated mortality. We undertook this study to investigate the contents and functional activity of hematopoietic stem/progenitor cells (HSPC) and their relationship to immune cell production and risk status in AL pediatric patients...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28476190/arid5b-cebpe-and-pip4k2a-germline-genetic-polymorphisms-and-risk-of-childhood-acute-lymphoblastic-leukemia-in-mexican-patients-a%C3%A2-migiccl-study
#9
Vilma Carolina Bekker-Méndez, Juan Carlos Núñez-Enríquez, José Luis Torres Escalante, Enrique Alvarez-Olmos, Pablo Miguel González-Montalvoc, Elva Jiménez-Hernández, Aurora Medina Sansón, Yelda A Leal, María Teresa Ramos-Cervantes, Francisco Xavier Guerra-Castillo, Mónica Patricia Ortiz-Maganda, Janet Flores-Lujano, Maria Luisa Pérez-Saldivar, Martha Margarita Velazquez-Aviña, Victoria Bolea-Murga, José Refugio Torres-Nava, Raquel Amador-Sanchez, Karina Anastacia Solis-Labastida, Julian Rámirez-Bello, José Manuel Fragoso, Juan Manuel Mejía-Aranguré
BACKGROUND AND AIMS: Childhood acute lymphoblastic leukemia (ALL) is the leading cause of childhood cancer-related deaths worldwide. Multiples studies have shown that ALL seems to be originated by an interaction between environmental and genetic susceptibility factors. The ARID5B polymorphisms are among the most reproducible ALL associated-risk alleles in different populations. The aim of the present study was to examine the contribution of ARID5B, CEBPE, and PIP4K2 risk alleles for the development of ALL in children from Mexico City and Yucatan, Mexico...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28476189/analysis-of-thiopurine-s-methyltransferase-deficient-alleles-in-acute-lymphoblastic-leukemia-patients-in-mexican-patients
#10
Silvia Jiménez-Morales, Mireya Ramírez-Florencio, Juan Manuel Mejía-Aranguré, Juan Carlos Núñez-Enríquez, Carolina Bekker-Mendez, José Luis Torres-Escalante, Janet Flores-Lujano, Elva Jiménez-Hernández, María Del Carmen Rodríguez-Zepeda, Yelda A Leal, Pablo Miguel González-Montalvo, Francisco Pantoja-Guillen, José Gabriel Peñaloza-Gonzalez, Erick Israel Gutiérrez-Juárez, Nora Nancy Núñez-Villegas, Maria Luisa Pérez-Saldivar, Francisco Xavier Guerra-Castillo, Luz Victoria Flores-Villegas, María Teresa Ramos-Cervantes, José Manuel Fragoso, María Guadalupe García-Escalante, Doris Del Carmen Pinto-Escalante, Julián Ramírez-Bello, Alfredo Hidalgo-Miranda
BACKGROUND AND AIMS: It has been demonstrated that heterozygote and homozygote thiopurine S-methyltransferase (TPMT) mutant allele carriers are at high risk to develop severe and potentially fatal hematopoietic toxicity after treatment with standard doses of 6-mercaptopurine (6-MP) and methotrexate (MX). Those drugs are the backbone of acute lymphoblastic leukemia (ALL) and several autoimmune disease treatments. We undertook this study to determine the frequency of the TPMT deficient alleles in children with ALL and non-ALL subjects from Mexico City and Yucatan, Mexico...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28476188/environmental-exposure-and-risk-of-childhood-leukemia-an-overview
#11
REVIEW
Joachim Schüz, Friederike Erdmann
Childhood leukemia is the most common cancer diagnosed in children worldwide. However, only a few causes have been established so far, mainly some genetic syndromes and high doses of ionizing radiation. Major efforts have been undertaken to study the relationship between environmental factors and the risk of childhood leukemia, inspired by geographical variation in incidence rates. Some evidence has emerged for parental occupational exposures to pesticides, whereas there is less evidence for an association with postnatal pesticide exposure...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28476187/early-age-acute-leukemia-revisiting-two-decades-of-the-brazilian-collaborative-study-group
#12
REVIEW
Maria S Pombo-de-Oliveira, Francianne Gomes Andrade
The understanding of leukemogenesis in early-age acute leukemia (EAL) has improved remarkably. Initiating somatic mutations detected in dried neonatal blood spots (DNBS) and in cord blood samples of affected children with leukemia have been proven to be acquired prenatally. However, to date, few epidemiological studies have been carried out exploring EAL that include infants and children 13-24 months of age at the diagnosis. Maternal exposure to transplacental DNA-damaging substances during pregnancy has been suggested to be a risk factor for EAL...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28476186/importance-of-nutrition-in-the-treatment-of-leukemia-in-children-and-adolescents
#13
REVIEW
Ronald D Barr, David Gomez-Almaguer, Jose Carlos Jaime-Perez, Guillermo J Ruiz-Argüelles
BACKGROUND AND AIMS: Malnutrition has been identified as a prognostic factor in children and adolescents with leukemia. METHODS: A review of the data available on this topic has been carried out. RESULTS AND CONCLUSIONS: In children and adolescents (0-19 years of age), acute lymphoblastic leukemia (ALL) is the commonest form of cancer worldwide and malnutrition is prevalent in this age group, especially in low- and middle-income countries where most of these young people live...
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28476185/acute-leukemias-in-children
#14
EDITORIAL
Juan Manuel MejÍa-Aranguré, Maria S Pombo-de-Oliveira, Charles G Mullighan
No abstract text is available yet for this article.
November 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28262199/effects-of-disease-activity-and-inflammatory-response-on-hypercoagulability-in-patients-with-systemic-lupus-erythematosus
#15
Yan Liang, Rui-Xue Leng, Hai-Feng Pan, Dong-Qing Ye
BACKGROUND AND AIMS: The aim of the study was to (1) investigate the possible relationships of clinical manifestations and laboratory abnormalities with hypercoagulability in systemic lupus erythematosus (SLE) patients; (2) analyze the interaction effect between SLE disease activity and erythrocyte sedimentation rate (ESR) as well as between C3 and ESR on hypercoagulability. METHODS: The medical records of 1677 SLE patients were collected. Data on demographic characteristics, clinical manifestations, laboratory abnormalities and immunosuppressive agents use were obtained by medical record review...
October 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28262198/association-of-g308a-and-g238a-polymorphisms-of-the-tnf-%C3%AE-gene-with-risk-of-coronary-heart-disease-systematic-review-and-meta-analysis
#16
Karely Pulido-Gómez, Yazmín Hernández-Díaz, Carlos Alfonso Tovilla-Zárate, Isela Esther Juárez-Rojop, Thelma Beatriz González-Castro, María Lilia López-Narváez, Mariela Alpuin-Reyes
BACKGROUND AND AIMS: It is widely acknowledged that coronary heart disease (CHD) has a genetic influence. One of the most promising candidate genes is tumor necrosis factor-alpha (TNF-α). Although there have been several positive studies associating the TNF-α gene and CHD, the evidence is not entirely consistent. The aim of the study was to evaluate the role of the TNF-α gene in CHD using combined evidence by generating a meta-analysis and a systematic review of all published data...
October 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28262197/longitudinal-analysis-of-the-interaction-between-obesity-and-pregnancy-on-iron-homeostasis-role-of-hepcidin
#17
María Eugenia Flores-Quijano, Irene Montalvo-Velarde, Victor Saul Vital-Reyes, Maricela Rodríguez-Cruz, Mario Enrique Rendón-Macías, Mardia López-Alarcón
BACKGROUND AND AIMS: When pregnancy occurs in obese women, two opposite mechanisms for iron homeostasis concur: increased need for available iron to support erythropoiesis and decreased iron mobilization from diets and stores due to obesity-related inflammation linked to overexpressed hepcidin. Few studies have examined the role of hepcidin on maternal iron homeostasis in the context of obese pregnancy. The aim of the study was to evaluate the combined effect of maternal obesity and pregnancy on hepcidin and maternal iron status while accounting for inflammation and iron supplementation...
October 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28262196/serum-chemerin-in-obese-children-and-adolescents-before-and-after-l-carnitine-therapy-relation-to-nonalcoholic-fatty-liver-disease-and-other-features-of-metabolic-syndrome
#18
Rasha T Hamza, Zeinab A Elkabbany, Ahmed M Shedid, Amira I Hamed, Asmaa O Ebrahim
BACKGROUND AND AIMS: Chemerin plays an important role in metabolic syndrome (MetS) including nonalcoholic fatty liver disease (NAFLD). L-carnitine (LC) may reduce plasma glucose, lipid profile, and improve liver function. The aim of the study was to assess serum chemerin in obese children with suspected NAFLD, the effect of LC on NAFLD grade, chemerin and metabolic profile. METHODS: Fifty obese children were compared to 50 controls. All were subjected to anthropometric assessment, liver function, fasting lipid profile, glucose/insulin (G/I) ratio, homeostasis model assessment (HOMA) index, serum chemerin and abdominal ultrasonography before and after LC...
October 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28262195/nutritional-intervention-in-malnourished-hospitalized-patients-with-heart-failure
#19
Juan L Bonilla-Palomas, Antonio L Gámez-López, Juan C Castillo-Domínguez, Mirian Moreno-Conde, María C López Ibáñez, Rosa Alhambra Expósito, Esmeralda Ramiro Ortega, Manuel P Anguita-Sánchez, Antonia Villar-Ráez
BACKGROUND AND AIMS: Hospitalized patients with heart failure who are malnourished present a worse prognosis than those with an adequate nutritional status. We undertook this study to assess whether a nutritional intervention in malnourished hospitalized patients with heart failure benefits morbidity and mortality. METHODS: A multicenter, randomized, controlled clinical trial was conducted. A total of 120 malnourished hospitalized patients due to acute heart failure were randomised to conventional heart failure treatment or conventional heart failure treatment combined with an individualized nutritional intervention...
October 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28262194/protective-effect-of-propolis-in-proteinuria-crystaluria-nephrotoxicity-and-hepatotoxicity-induced-by-ethylene-glycol-ingestion
#20
Nawal El Menyiy, Noori Al Waili, Meryem Bakour, Hamza Al-Waili, Badiaa Lyoussi
BACKGROUND AND AIMS: Propolis is a natural honeybee product with wide biological activities and potential therapeutic properties. The aim of the study is to evaluate the protective effect of propolis extract on nephrotoxicity and hepatotoxicity induced by ethylene glycol in rats. METHODS: Five groups of rats were used. Group 1 received drinking water, group 2 received 0.75% ethylene-glycol in drinking water, group 3 received 0.75% ethylene-glycol in drinking water along with cystone 500 mg/kg/body weight (bw) daily, group 4 received 0...
October 2016: Archives of Medical Research
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