Brief report: Revealing the nuance: Examining approaches for research with adolescents who identify with multiple racial/ethnic groups.

INTRODUCTION: Increasing racial/ethnic diversity in the United States calls for methodological approaches that capture participants who identify with multiple racial/ethnic groups. Existing approaches are oriented toward large samples (N > 500); yet, we do not know how effective these approaches are with more common smaller convenience samples. We explored how several approaches were associated with the sample distribution of racial/ethnic groups and ethnic identity using a small convenience sample. METHODS: In 2017, 320 U.S. adolescents (Mage = 16.04 years, SDage = 1.33; 59% female) responded to an open-ended question regarding their racial/ethnic group(s) in a cross-sectional survey. Seventy-five (23%) adolescents identified with multiple racial/ethnic groups. Remaining adolescents identified solely with the Asian/Hawaiian Native/Pacific Islander (19%), Black/African American (3%), European American (21%), Latinx (34%), or Native American/Alaska Native (<1%) group. RESULTS: Three approaches for adolescents with multiple racial/ethnic groups were employed. Findings indicated that the sample distributions differed across the approaches. The greatest differences were shown for Black/African American, Native American/Alaska Native, and Other Race/Ethnicity groups. Descriptively, ethnic identity also differed across the approaches. For example, multiracial/ethnic adolescents reported greater ethnic identity-exploration than their European American counterparts in one approach than in others. CONCLUSIONS: Researchers should carefully consider approaches to research with adolescents who identify with multiple racial/ethnic groups given implications for the literature. This study demonstrates the critical need to further develop approaches for capturing the complexity of race/ethnicity.

A multiconsistent computational methodology to resolve a diffusive epidemiological system with effects of migration, vaccination and quarantine.

BACKGROUND: We provide a compartmental model for the transmission of some contagious illnesses in a population. The model is based on partial differential equations, and takes into account seven sub-populations which are, concretely, susceptible, exposed, infected (asymptomatic or symptomatic), quarantined, recovered and vaccinated individuals along with migration. The goal is to propose and analyze an efficient computer method which resembles the dynamical properties of the epidemiological model. MATERIALS AND METHODS: A non-local approach is utilized for finding approximate solutions for the mathematical model. To that end, a non-standard finite-difference technique is introduced. The finite-difference scheme is a linearly implicit model which may be rewritten using a suitable matrix. Under suitable circumstances, the matrices representing the methodology are M-matrices. RESULTS: Analytically, the local asymptotic stability of the constant solutions is investigated and the next generation matrix technique is employed to calculate the reproduction number. Computationally, the dynamical consistency of the method and the numerical efficiency are investigated rigorously. The method is thoroughly examined for its convergence, stability, and consistency. CONCLUSIONS: The theoretical analysis of the method shows that it is able to maintain the positivity of its solutions and identify equilibria. The method's local asymptotic stability properties are similar to those of the continuous system. The analysis concludes that the numerical model is convergent, stable and consistent, with linear order of convergence in the temporal domain and quadratic order of convergence in the spatial variables. A computer implementation is used to confirm the mathematical properties, and it confirms the ability in our scheme to preserve positivity, and identify equilibrium solutions and their local asymptotic stability.

Effect of high hydrostatic pressure on the polyphenols and antioxidant activity of plantain pulp (Musa paradisiaca AAB).

BACKGROUND: The impact of high-pressure processing (HPP) on the polyphenol (PP) content and antioxidant activity (AOX) of plantain pulp was evaluated. Pressures of 400, 500 and 600 MPa were applied to plantain pulp for 90 and 180 s at room temperature (25 °C). Polyphenoloxidase activity, extractable (EPP) and non-extractable PP (NEPP) contents, flavonoid content and AOX (FRAP, ABTS•+ ) were evaluated. In addition, PP identification was performed using high-performance liquid chromatography. RESULTS: Polyphenoloxidase activity was inhibited after HPP under all of the conditions studied. Increases of 110.80% and 137.40% in EPP content under conditions of 500 MPa/180 s and 600 MPa/90 s were observed with a simultaneous improvement in the AOX with increments of up to 128.71%. The treatment under conditions of 500 MPa/90 s had the highest total PP content, including the highest content of flavonoids (0.22 g ellagic acid equivalents kg-1 dry weight) and the proportion of NEPP that contained hydrolysable PPs (91.12 g gallic acid equivalents kg-1 dry weight with high AOX. The identified PPs included catechin, quercetin, gallic and hydroxybenzoic acids. CONCLUSION: HPP performed at a room temperature can be used for improving the total content of PP compounds in plantain pulp under specific pressure and time conditions. © 2016 Society of Chemical Industry.

Effect of stevia and citric acid on the stability of phenolic compounds and in vitro antioxidant and antidiabetic capacity of a roselle (Hibiscus sabdariffa L.) beverage.

Plant infusions are consumed due to their beneficial effects on health, which is attributed to their bioactive compounds content. However, these compounds are susceptible to degradation during processing and storage. The objective of this research was to evaluate the effect of stevia and citric acid on the stability of phenolic compounds, antioxidant capacity and carbohydrate-hydrolysing enzyme inhibitory activity of roselle beverages during storage. The optimum extraction conditions of roselle polyphenolic compounds was of 95 °C/60 min, which was obtained by a second order experimental design. The incorporation of stevia increased the stability of colour and some polyphenols, such as quercetin, gallic acid and rosmarinic acid, during storage. In addition, stevia decreased the loss of ABTS, DPPH scavenging activity and α-amylase inhibitory capacity, whereas the incorporation of citric acid showed no effect. These results may contribute to the improvement of technological processes for the elaboration of hypocaloric and functional beverages.

Enfermedad renal crónica en el adulto mayor / Chronic renal disease in elder people

Fundamento: la insuficiencia renal crónica se define como el daño estructural o funcional del riñón, evidenciado por marcadores de daño (orina, sangre o imágenes) por un período igual o mayor a tres meses. Entre el 8 al 10 % de la población general adulta tiene algún daño renal.Objetivos: conocer la incidencia y prevalencía de la enfermedad renal crónica en el adulto mayor, en el Hospital Universitario Clínico Quirúrgico Comandante Faustino Pérez Hernández. Métodos: se realizó un estudio de tipo, longitudinal, descriptivo, retrospectivo. La muestra la constituyó 274 pacientes que cumplieron los criterios de inclusión. Las variables utilizadas fueron: edad, sexo, color de la piel, peso, antecedentes patológicos personales, las causas de ingreso, los factores de progresión de la enfermedad renal crónica, hábitos tóxicos y valor de la creatinina. Para organizar los indicadores obtenidos se aplicó el método estadístico descriptivo, analizando la información mediante tablas de distribución de frecuencia, gráficos y las medidas de resumen como la media y la moda para las variables cuantitativas, y los números absolutos y el porcentaje para las variables cualitativa. Resultados: alta prevalencia hospitalaria de la enfermedad renal crónica en el adulto mayor, más frecuente en el sexo femenino y la raza blanca, coexisten muchos factores de riesgo, predominando hipertensión arterial, cardiopatías, diabetes mellitus, edad y hábito de fumar. Los factores de progresión más frecuentes encontrados fueron hipertensión arterial descompensada, hipoperfusión renal y sepsis. Conclusiones: existe una alta prevalencia hospitalaria de la enfermedad renal crónica en el adulto mayor, con un subdiagnóstico de la misma(AU)

Founding principle: chronic renal insufficiency is defined as the kidney structural or functional damage, evidenced by markers of damage (urine, blood or images) for a period of three months or more. Between 8 and 10 % of the general adult population has some renal damage. Objective: to know the incidence and prevalence of the chronic renal disease in elder people, in the Teaching Clinic Surgical Hospital Comandante Faustino Pérez Hernández. Methods: a retrospective descriptive longitudinal study was carried out. The sample was formed by 274 patients fulfilling the inclusion criteria. The used variables were: age, sex, skin color, weight, personal pathological antecedents, entering cause, chronic renal disease's progression factors, toxic habits and creatinine value. For organizing the obtained indicators we applied the descriptive statistic method, analyzing the information through frequency distribution tables, graphics resuming measures as average and mode for the quantitative variables, and absolute numbers and percentage for the qualitative variables. Results: high nosocomial prevalence of the chronic renal disease in elder people, more frequent in the female sex and white people; coexistence of many risk factors, predominating arterial hypertension, cardiopathies, diabetes mellitus, age and smoking. The most frequently found progression factors were de decompensated arterial hypertension, renal hypoperfusion and sepsis. Conclusions: there is high nosocomial prevalence of the chronic renal disease in elder people(AU)

Enfermedad renal crónica en el adulto mayor / Chronic renal disease in elder people

Fundamento: la insuficiencia renal crónica se define como el daño estructural o funcional del riñón, evidenciado por marcadores de daño (orina, sangre o imágenes) por un período igual o mayor a tres meses. Entre el 8 al 10 % de la población general adulta tiene algún daño renal. Objetivos: conocer la incidencia y prevalencia de la enfermedad renal crónica en el adulto mayor, en el Hospital Universitario Clínico Quirúrgico Comandante Faustino Pérez Hernández. Métodos: se realizó un estudio de tipo, longitudinal, descriptivo, retrospectivo. La muestra la constituyó 274 pacientes que cumplieron los criterios de inclusión. Las variables utilizadas fueron: edad, sexo, color de la piel, peso, antecedentes patológicos personales, las causas de ingreso, los factores de progresión de la enfermedad renal crónica, hábitos tóxicos y valor de la creatinina. Para organizar los indicadores obtenidos se aplicó el método estadístico descriptivo, analizando la información mediante tablas de distribución de frecuencia, gráficos y las medidas de resumen como la media y la moda para las variables cuantitativas, y los números absolutos y el porcentaje para las variables cualitativa. Resultados: alta prevalencia hospitalaria de la enfermedad renal crónica en el adulto mayor, más frecuente en el sexo femenino y la raza blanca, coexisten muchos factores de riesgo, predominando hipertensión arterial, cardiopatías, diabetes mellitus, edad y hábito de fumar. Los factores de progresión más frecuentes encontrados fueron hipertensión arterial descompensada, hipoperfusión renal y sepsis. Conclusiones: existe una alta prevalencia hospitalaria de la enfermedad renal crónica en el adulto mayor, con un subdiagnóstico de la misma.

Founding principle: chronic renal insufficiency is defined as the kidney structural or functional damage, evidenced by markers of damage (urine, blood or images) for a period of three months or more. Between 8 and 10 % of the general adult population has some renal damage. Objective: to know the incidence and prevalence of the chronic renal disease in elder people, in the Teaching Clinic Surgical Hospital Comandante Faustino Pérez Hernández. Methods: a retrospective descriptive longitudinal study was carried out. The sample was formed by 274 patients fulfilling the inclusion criteria. The used variables were: age, sex, skin color, weight, personal pathological antecedents, entering cause, chronic renal disease´s progression factors, toxic habits and creatinine value. For organizing the obtained indicators we applied the descriptive statistic method, analyzing the information through frequency distribution tables, graphics resuming measures as average and mode for the quantitative variables, and absolute numbers and percentage for the qualitative variables. Results: high nosocomial prevalence of the chronic renal disease in elder people, more frequent in the female sex and white people; coexistence of many risk factors, predominating arterial hypertension, cardiopathies, diabetes mellitus, age and smoking. The most frequently found progression factors were de decompensated arterial hypertension, renal hypoperfusion and sepsis. Conclusions:there is high nosocomial prevalence of the chronic renal disease in elder people.

High hydrostatic pressure induces synthesis of heat-shock proteins and trehalose-6-phosphate synthase in Anastrepha ludens larvae.

The Mexican fruit fly (Anastrepha ludens) is responsible for losses of up to 25% of crops such as mango and citrus fruits in Central America and México. The larval life cycle of A. ludens comprises three stages with a duration ranging from 3 to 8 days. Because of the damage caused by A. ludens, several methods of control have been studied and implemented. High hydrostatic pressures (HHP) are currently applied to foods and it is now proposed to be employed to inactivate eggs and larvae of A. ludens. Originally HHP was designed to inactivate microorganisms, since it exerts marked effects on cell morphology, and can affect enzymatic reactions and genetic mechanisms of microbial cells, with no major changes altering the sensory or nutritional quality of the foodstuff. In this study, A. ludens in two larval stages (5- and 8-day-old) were subjected to HHP treatments. The biochemical response of the larvae of A. ludens was dependent on their stage of development. The third larval stage (L3) developed a better protection mechanism based on the synthesis of stress proteins or heat-shock proteins (HSPs) and the enzyme trehalose-6-phosphate synthase, which are linked and possibly act together to achieve greater survivability to stress caused by hydrostatic pressure.

Coagulación intravascular diseminada: diagnóstico de laboratorio por los métodos tradicionales / Disseminated intravascular coagulation: laboratory diagnosis by traditional methods

Con fines especialmente docentes se realiza una revisión bibliográfica sobre el diagnóstico de laboratorio clínico de la coagulación intravascular diseminada, tanto en su forma aguda como en su forma crónica, utilizando los métodos antiguos o tradicionales por su extraordinaria validez hoy en día, a pesar de la aparición de métodos modernos de investigación. Se explica además cuáles son las investigaciones de mayor importancia y utilidad para el médico, y las diferentes opciones con las que puede contar de acuerdo a condiciones concretas del paciente...(AU)