Dataset Information

A greater birthweight increases the risk of acute leukemias in Mexican children-experience from the Mexican Interinstitutional Group for the Identification of the Causes of Childhood Leukemia (MIGICCL).

ABSTRACT: In Mexico, due to the high rates of diabetes, overweight, and obesity, there has also been noted an increased newborn weight, which may be contributing to the elevated incidence rate of childhood acute leukemia (AL). We conducted a case-control study in public hospitals of Mexico City aimed to know whether a greater weight at birth is associated with a higher risk of developing leukemia. We included incident cases with acute lymphoblastic leukemia (ALL) and acute myeloid leukemia (AML) diagnosed between 2010 and 2015. Controls were frequency-matched to the cases by age, sex, and health institution. Logistic regression analysis was performed adjusting risks by child's sex, overcrowding index, birth order, and mother's age at the time of pregnancy. Adjusted odds ratios (aORs) and 95% confidence intervals were calculated. A total of 1455 cases and 1455 controls were included. An evident association between ALL and child's birthweight ?2500 g was found (aOR 2.06; 95% CI: 1.59, 2.66) and also, in those with birthweight ?3500 g (aOR 1.19; 95% CI: 1.00, 1.41). In AML patients with birthweight ?2500 g and ?3500 g, an aOR of 1.77 (95% CI: 1.07, 2.94) and 1.42 (95% CI: 1.03-1.95) was observed, respectively. No association was noticed with either type of AL and a birthweight ?4000 g. To sum up, we found a moderate association between not having a low birthweight and an increased risk of acute leukemias. Birthweight ?3500 g was also a risk factor for both types of leukemia. This suggests that a greater birthweight may increase the risk of acute leukemias in Mexican children.

SUBMITTER: Jimenez-Hernandez E

PROVIDER: S-EPMC5911591 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

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A greater birthweight increases the risk of acute leukemias in Mexican children-experience from the Mexican Interinstitutional Group for the Identification of the Causes of Childhood Leukemia (MIGICCL).

Jiménez-Hernández Elva E Fajardo-Gutiérrez Arturo A Núñez-Enriquez Juan Carlos JC Martín-Trejo Jorge Alfonso JA Espinoza-Hernández Laura Eugenia LE Flores-Lujano Janet J Arellano-Galindo José J Medina-Sanson Aurora A Paredes-Aguilera Rogelio R Merino-Pasaye Laura Elizabeth LE Velázquez-Aviña Martha Margarita MM Torres-Nava José Refugio JR Espinosa-Elizondo Rosa Martha RM Amador-Sánchez Raquel R Dosta-Herrera Juan José JJ Mondragón-García Javier Anastacio JA Valdés-Guzmán Heriberto H Mejía-Pérez Laura L Espinoza-Anrubio Gilberto G Paz-Bribiesca María Minerva MM Salcedo-Lozada Perla P Landa-García Rodolfo Ángel RÁ Ramírez-Colorado Rosario R Hernández-Mora Luis L Pérez-Saldivar María Luisa ML Santamaría-Ascencio Marlene M López-Loyola Anselmo A Godoy-Esquivel Arturo Hermilo AH García-López Luis Ramiro LR Anguiano-Ávalos Alison Ireri AI Mora-Rico Karina K Castañeda-Echevarría Alejandro A Rodríguez-Jiménez Roberto R Cibrian-Cruz José Alberto JA Solís-Labastida Karina Anastacia KA Cárdenas-Cardos Rocío R Martínez-Avalos Armando A Flores-Villegas Luz Victoria LV Peñaloza-González José Gabriel JG González-Ávila Ana Itamar AI Altamirano-García Martha Beatriz MB López-Santiago Norma N Sánchez-Ruiz Martin M Rivera-Luna Roberto R Rodríguez-Villalobos Luis Rodolfo LR Hernández-Pérez Francisco F Olvera-Durán Jaime Ángel JÁ García-Cortés Luis Rey LR Mata-Rocha Minerva M Sepúlveda-Robles Omar Alejandro OA González-Bonilla Cesar Raúl CR Bekker-Méndez Vilma Carolina VC Jiménez-Morales Silvia S Rosas-Vargas Haydee H Mejía-Aranguré Juan Manuel JM

Cancer medicine 20180313 4

In Mexico, due to the high rates of diabetes, overweight, and obesity, there has also been noted an increased newborn weight, which may be contributing to the elevated incidence rate of childhood acute leukemia (AL). We conducted a case-control study in public hospitals of Mexico City aimed to know whether a greater weight at birth is associated with a higher risk of developing leukemia. We included incident cases with acute lymphoblastic leukemia (ALL) and acute myeloid leukemia (AML) diagnosed ...[more]

PMID: 29533016

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Project description:Acute lymphoblastic leukemia (ALL) is the most common cancer in children around the globe. Mexico City has one of the highest incidence rates of childhood leukemia worldwide with 49.5 cases per million children under the age of 15 which is similar to that reported for Hispanic populations living in the United States. In addition, it has been noted a dismal prognosis in Mexican and Hispanic ALL pediatric population. Although ALL, like cancer in general, has its origins in endogenous, exogenous, and genetic factors, several studies have shown that the immune system also plays a deterministic role in cancer development. Among various elements of the immune system, T lymphocytes and NK cells seem to dominate the immune response against leukemia. The aim of the present study was to perform a phenotypic and functional characterization of NK cells in ALL Mexican children at the moment of diagnosis and before treatment initiation. A case-control study was conducted by the Mexican Interinstitutional Group for the Identification of the Causes of Childhood Leukemia (MIGICCL). 41 cases were incident ALL children younger than 17 years old and residents of Mexico City. 14 controls were children without leukemia, matched by age and sex with cases. NK cell function was evaluated by degranulation assays towards K562 cells and SLAM-associated protein (SAP) expression was measured by intracellular staining. All assays were performed using peripheral blood mononuclear cells from controls and patients. The results indicate that NK mediated cytotoxicity, measured by CD107a degranulation assays in response to K562 cells, was reduced in ALL patients compared to controls. Interestingly, an impaired NK cell killing of target cells was not equally distributed among ALL patients. In contrast to patients classified as high-risk, standard-risk patients did not display a significant reduction in NK cell-mediated cytotoxicity. Moreover, patients presenting a leukocyte count ≥ 50,000xmm3 displayed a reduction in NK-cell mediated cytotoxicity and a reduction in SAP expression, indicating a positive correlation between a reduced SAP expression and an impaired NK cell-mediated citotoxicity. In the present study it was observed that unlike patients with standard-risk, NK cells from children presenting high-risk ALL, harbor an impaired cytotoxicity towards K562 at diagnosis. In addition, NK cell function was observed to be compromised in patients with a leukocyte count ≥50,000xmm3, where also it was noticed a decreased expression of SAP compared to patients with a leukocyte count <50,000xmm3. These data indicate NK cell-mediated cytotoxicity is not equally affected in ALL patients, nevertheless a positive correlation between low SAP expression and decreased NK cell-mediated cytotoxicity was observed in ALL patients with a leukocyte count ≥50,000xmm3. Finally, an abnormal NK cell-mediated cytotoxicity may represent a prognostic factor for high-risk acute lymphoblastic leukemia.

Project description:BackgroundWorldwide, acute leukemia is the most common type of childhood cancer. It is particularly common in the Hispanic populations residing in the United States, Costa Rica, and Mexico City. The objective of this study was to determine the incidence of acute leukemia in children who were diagnosed and treated in public hospitals in Mexico City.MethodsIncluded in this study were those children, under 15 years of age and residents of Mexico City, who were diagnosed in 2006 and 2007 with leukemia, as determined by using the International Classification of Childhood Cancer. The average annual incidence rates (AAIR), and the standardized average annual incidence rates (SAAIR) per million children were calculated. We calculated crude, age- and sex-specific incidence rates and adjusted for age by the direct method with the world population as standard. We determined if there were a correlation between the incidence of acute leukemias in the various boroughs of Mexico City and either the number of agricultural hectares, the average number of persons per household, or the municipal human development index for Mexico (used as a reference of socio-economic level).ResultsAlthough a total of 610 new cases of leukemia were registered during 2006-2007, only 228 fit the criteria for inclusion in this study. The overall SAAIR was 57.6 per million children (95% CI, 46.9-68.3); acute lymphoblastic leukemia (ALL) was the most frequent type of leukemia, constituting 85.1% of the cases (SAAIR: 49.5 per million), followed by acute myeloblastic leukemia at 12.3% (SAAIR: 6.9 per million), and chronic myeloid leukemia at 1.7% (SAAIR: 0.9 per million). The 1-4 years age group had the highest SAAIR for ALL (77.7 per million). For cases of ALL, 73.2% had precursor B-cell immunophenotype (SAAIR: 35.8 per million) and 12.4% had T-cell immunophenotype (SAAIR 6.3 per million). The peak ages for ALL were 2-6 years and 8-10 years. More than half the children (58.8%) were classified as high risk. There was a positive correlation between the average number of persons per household and the incidence of the pre-B immunophenotype (Pearson's r, 0.789; P = 0.02).ConclusionsThe frequency of ALL in Mexico City is among the highest in the world, similar to those found for Hispanics in the United States and in Costa Rica.

Project description:IntroductionFaculty and staff from Duquesne University and the University of Pittsburgh Schools of Pharmacy created a simulation activity focused on the care of critically ill patients with coronavirus disease 2019 (COVID-19). Students on remote, short-term-care advanced pharmacy practice experiences (APPE) rotations from both universities worked in comingled teams and completed two educational electronic health record reviews, complex simulation sessions, and debriefs. Individually, students completed two educational electronic health record reviews and verbal patient presentations before and after the simulation sessions.ObjectivesEvaluate the effects of a simulation activity during a remote short-term-care APPE on student confidence and knowledge surrounding the care of a critically ill patient with COVID-19.MethodsStudent knowledge surrounding COVID-19 short-term-care treatment principles was assessed through pre-/postcase-based multiple-choice examinations and an intermittent clinical examination (ICE). Student confidence and perceptions were gathered through anonymous pre-/postsurveys. The written examination and patient presentation recordings were compared from baseline to the final assessment using the Wilcoxon signed-rank test.ResultsIn total, 92 students participated in the activity. There was a statistically significant improvement from baseline to the final assessment (preassessment median [interquartile range (IQR)]: 55.3% [50%-60.5%]; postassessment median [IQR]: 68.4 [60.5%-73.7%]; P < .001) on the written examination. ICE total scores improved from baseline (preassessment median [range]: 33 [28-36] vs postassessment median [range]: 36.5 [29.5-43.52]; P = .004) as well as the objective (P < .001), plan (P < .001), and monitoring (P < .001) subdomain scores. Student confidence reported on surveys improved from baseline in all domains.ConclusionRemote simulation sessions improve student knowledge and confidence and provide an opportunity for students to experience caring for patients with COVID-19 in a safe environment. Collaboration between schools of pharmacy can be successfully employed to leverage resources and expertise to expand opportunities for students.

Dataset Information

A greater birthweight increases the risk of acute leukemias in Mexican children-experience from the Mexican Interinstitutional Group for the Identification of the Causes of Childhood Leukemia (MIGICCL).

Publications

A greater birthweight increases the risk of acute leukemias in Mexican children-experience from the Mexican Interinstitutional Group for the Identification of the Causes of Childhood Leukemia (MIGICCL).

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