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1.
Nefrología (Madrid) ; 43(4): 413-426, jul.-ago. 2023. ilus, tab
Article in English | IBECS | ID: ibc-223960

ABSTRACT

Urinary epidermal growth factor (uEGF) is primarily produced by the kidney, and alterations of it have been associated with several kidney diseases. The aim of this review was to describe uEGF levels in presence or progression of kidney diseases. We conducted a systematic review of observational studies with uEGF determination, patients with acute kidney injury, chronic kidney disease, primary or secondary nephropathy, or renal cancer were included. Studies were searched in Medline, Google Scholar, Science Direct, and EBSCO up to August 2, 2021. Participants and measurements characteristics from which uEGF were determined as the specificity, sensitivity, and the area under the ROC curve, whenever available, were gathered. 53 studies were included, the most frequent kidney diseases studied were acute kidney injury, chronic kidney disease, and diabetic nephropathy. In most studies, uEGF levels were lower in cases than in controls. Studies showed that uEGF levels can predict presence or progression of acute kidney injury, chronic kidney disease, and nephropathy. Heterogeneity in the reported uEGF values can be attributed to the different techniques, sampling, and ways of reporting uEGF values. Although uEGF values are lower in patients with almost all kidney diseases and their progression, uEGF evaluation methods should be standardised to be used as a biomarker in clinical practice. (AU)


El factor de crecimiento epidérmico urinario (uEGF) es producido principalmente por el riñón, y sus alteraciones se han asociado con varias enfermedades renales. El objetivo de esta revisión fue describir los niveles de uEGF en presencia o progresión de enfermedades renales. Realizamos una revisión sistemática de estudios observacionales con determinación de uEGF en la que se incluyeron pacientes con insuficiencia renal aguda, enfermedad renal crónica, nefropatía primaria o secundaria, o cáncer renal. Se realizaron búsquedas de estudios en Medline, Google Scholar, Science Direct y EBSCO hasta el 2 de agosto de 2021. Se extrajeron las características de los participantes y de las mediciones del uEGF, así como la especificidad, la sensibilidad y el área bajo la curva ROC, siempre que estuvieran disponibles. Se incluyeron 53 estudios, y las enfermedades renales más frecuentes estudiadas fueron la insuficiencia renal aguda, la enfermedad renal crónica y la nefropatía diabética. En la mayoría de los estudios los niveles de uEGF fueron más bajos en los casos que en los controles. Los estudios demostraron que los niveles de uEGF pueden predecir la presencia o la progresión de la lesión renal aguda, la enfermedad renal crónica y la nefropatía. La heterogeneidad en los valores de uEGF informados se puede atribuir a las diferentes técnicas, muestreo y formas de informar los valores de uEGF. Aunque los valores de uEGF son más bajos en pacientes con casi todas las enfermedades renales y su progresión, los métodos de evaluación de uEGF deben estandarizarse para ser utilizados como biomarcadores en la práctica clínica. (AU)


Subject(s)
Humans , Epidermal Growth Factor , Renal Insufficiency, Chronic , Kidney Diseases , Acute Kidney Injury
2.
Biometals ; 36(6): 1173-1187, 2023 12.
Article in English | MEDLINE | ID: mdl-37356039

ABSTRACT

In recent years, it has been identified that excess iron contributes to the development of various pathologies and their complications. Kidney diseases do not escape the toxic effects of iron, and ferroptosis is identified as a pathophysiological mechanism that could be a therapeutic target to avoid damage or progression of kidney disease. Ferroptosis is cell death associated with iron-dependent oxidative stress. To study the effects of iron overload (IOL) in the kidney, numerous animal models have been developed. The methodological differences between these models should reflect the IOL-generating mechanisms associated with human IOL diseases. A careful choice of animal model should be considered for translational purposes.


Subject(s)
Ferroptosis , Iron Overload , Animals , Humans , Kidney , Iron , Models, Animal
3.
Cienc. act. fís. (Talca, En línea) ; 22(2): 1-11, 2021. graf
Article in Spanish | LILACS | ID: biblio-1361611

ABSTRACT

RESUMEN. El proceso de enseñanza-aprendizaje hace prioritario valorar las experiencias y perspectivas de los actores involucrados, para ello, es necesario promover la dialogicidad entre estudiantes y docentes, como una actividad de retroalimentación que oriente a la reflexión y análisis en busca de la adaptación y mejora del mismo. El objetivo del estudio fue valorar la práctica educativa sustentada en el enfoque de pensamiento complejo, a partir de la perspectiva estudiantil. El presente trabajo muestra los datos obtenidos a partir de sistematización de experiencias académicas desarrollada con 23 estudiantes del segundo semestre de Licenciatura en Educación Física, con respecto, al primer objeto de estudio del proyecto formativo implementado que atiende la asignatura Bases Psicopedagógicas en el semestre enero-junio 2018, para lo cual se atendieron tres fases procedimentales: reconstrucción, interpretación y potenciación de la experiencia. Haciendo uso de la videograbación y observación participante, se analizó como unidad de observación al pensamiento complejo y como unidades de análisis 1. La planeación analítica de clase compuesta por 2. Estrategias docentes innovadoras y 3. La metodología de evaluación. Los resultados muestran que los estudiantes manifiestan interés y motivación por las unidades de análisis 2 y 3, expresando que les favorecen las clases dinámicas y la valoración de su trabajo con un carácter formativo y no memorístico. En cuanto a la unidad de observación 1, manifestaron un dominio limitado acerca de la propuesta presentada por la docente. Se rescata su interés y satisfacción porque las asignaturas teóricas los sitúen en su realidad laboral.


ABSTRACT. In the teaching-learning process it becomes a priority to assess the experiences and perspectives of the actors involved, for this it is necessary to promote dialogue between students and teachers, as a feedback activity that guides reflection and analysis in search of adaptation and of the improvement of it. The objective was to assess the educational practice based on the complex thinking approach from the student perspective. The present work shows the data obtained from Systematization of Academic Experiences developed with 23 students of the second semester of the Degree in Physical Education, with respect to the first object of study of the formative project implemented that attends the subject Psychopedagogical Bases in the semester January -June 2018, for which three procedural phases were attended: reconstruction, interpretation and enhancement of the experience. Using video recording and participant observation, it was analyzed as a unit of observation to complex thinking and as units of analysis 1.The analytical class planning, 2. The teaching strategies implemented and 3. The evaluation methodology. The results show that the students express interest and motivation for the analysis units 2 and 3, expressing that they favor dynamic classes and the valuation of their work with a formative and non-memorial character. Regarding the observation unit 1, they expressed limited mastery of the proposal presented by the teacher. Their interest and satisfaction are rescued because the theoretical subjects place them in their work reality.


Subject(s)
Humans , Physical Education and Training , Students , Feedback , Teaching , Qualitative Research , Learning
4.
Rev. chil. nutr ; 47(5): 801-807, set. 2020. tab, graf
Article in English | LILACS | ID: biblio-1138617

ABSTRACT

ABSTRACT As palatability of medical formulas has been documented as unpleasant, new options are required to improve acceptance and adherence in people with inborn errors of metabolism (IEM). Miracle fruit (Synsepalum dulcificum) has a glycoprotein named miraculin that transforms a sour, bitter taste such as the one found in metabolic formula, into a sweet perception. The objective of this work is to analyze the response in the taste perception of metabolic formula with the use of the miraculin tablets in patients with IEM and healthy adults. To test this hypothesis a prospective, longitudinal, quasi-experimental, analytical study was performed. Patients with IEM and healthy adults were recruited. All participants assessed 3 different liquids (lemon, apple cider vinegar and metabolic formula) before and after the administration of miraculin tablets and completed a questionnaire. The sensory responses were evaluated using hedonic scales, analyzed with nonparametric tests for paired data. Seven patients with IEM and 14 healthy subjects were included. After miraculin intake 57% of patients (Z ≤ -1.89 p= 0.059) and healthy adults (Z≤ -2.31 p= 0.021) had a positive change in their taste perception. The absolute frequency of patients who did not like the metabolic formula decreased from 4 to 1, and in patients who liked it or loved, it increased from 0 to 2 and from 0 to 1 respectively; the frequency of patients who perceived the metabolic formula as indifferent or hated it, did not change. Response in taste perception had a positive change of 57% in both groups. The use of miraculin tablets may improve palatability of metabolic formula.


RESUMEN La palatabilidad de las fórmulas médicas se ha reportado como desagradable, se requieren nuevas opciones para mejorar la aceptación en personas con errores innatos del metabolismo (EIM). La fruta milagrosa (Synsepalum dulcificum) contiene una glucoproteína llamada miraculina que transforma el sabor agrio y amargo en dulce. El objetivo fue analizar la respuesta en la percepción del sabor de la fórmula metabólica con el uso de las tabletas de miraculina en pacientes con EIM y adultos sanos. Se realizó un estudio analítico prospectivo, longitudinal, cuasi-experimental. Los participantes evaluaron la percepción de 3 líquidos (limón, vinagre de manzana y fórmula metabólica) antes y después de la administración de tabletas de miraculina y completaron un cuestionario. Las respuestas sensoriales se evaluaron mediante escalas hedónicas, analizadas con pruebas no paramétricas para datos pareados. Se incluyeron 7 pacientes con EIM y 14 adultos sanos. Después de la miraculina el 57% de los pacientes (Z ≤ -1,89 p= 0,059) y adultos sanos (Z≤ -2,31 p= 0,021) tuvieron un cambio positivo en su percepción del sabor. La frecuencia absoluta de pacientes a los que no les gustó la fórmula disminuyó de 4 a 1, y en quienes les gustó o les encantó, aumentó de 0 a 2 y de 0 a 1 respectivamente; la frecuencia de los pacientes que percibieron la fórmula como indiferente u odiada, no cambió. La respuesta en la percepción del sabor cambió positivamente en el 57% en ambos grupos. El uso de miraculina puede mejorar la palatabilidad de la fórmula metabólica.


Subject(s)
Adolescent , Adult , Biotransformation , Synsepalum , Taste Perception , Fruit , Amino Acids , Metabolism, Inborn Errors
5.
Rev Invest Clin ; 64(3): 255-61, 2012.
Article in Spanish | MEDLINE | ID: mdl-23045948

ABSTRACT

INTRODUCTION: Methylmalonic acidemia (MMA) is a genetically determined human metabolic disease, characterized by deficient activity of the mitochondrial enzyme, methylmalonyl CoA mutase (MCM). This enzyme catalyzes the isomerization of L-methylmalonyl CoA to succinyl CoA and requires adenosylcobalamin as cofactor. Several mutations have been identified in the unique genetic locus encoding the MCM apoenzyme (mut) which causes MMA. AIM: To identify the mutations present in Mexican patients diagnosed with MMA. RESULTS: Complete nucleotide sequencing of mut gene exons of 10 Mexican patients with methylmalonic acidemia (MMA) identified one novel mutation and eight mutations previously reported in the methylmalonyl-CoA mutase (mut) gene. The new mutation c.406G > T (p.V136F) was found in one patient combined with the deletion c.1891delG (p.A631QfsX17). The missense mutation c.322C > T (p.R108C) was found in six non-related patients; in addition, the mutations c.ins671-678dupAATTTATG (p.V227NfsX16), c.682C > T (p.R228X), c1022-1023dupA (p. N341KfsX20), c.1846C > T (p.R616C), c.2080C > T (p.R694W), and c.385+3insTAAGGGT (splice) were found. This work reveals that Mexican patients with MMA have new (p.V136F) as well as worldwide and hispanic reported mutations. The mutation R108C is the most frequent change (40% of total alleles) mainly in patients from León, Guanajuato.


Subject(s)
Amino Acid Metabolism, Inborn Errors/genetics , DNA Mutational Analysis , Methylmalonyl-CoA Mutase/genetics , Female , Humans , Male , Mexico
6.
BMJ ; 342: d2901, 2011 May 19.
Article in English | MEDLINE | ID: mdl-21596735

ABSTRACT

OBJECTIVE: To test the hypothesis that a relative deficiency in L-arginine, the substrate for synthesis of the vasodilatory gas nitric oxide, may be associated with the development of pre-eclampsia in a population at high risk. DESIGN: Randomised, blinded, placebo controlled clinical trial. SETTING: Tertiary public hospital in Mexico City. PARTICIPANTS: Pregnant women with a history of a previous pregnancy complicated by pre-eclampsia, or pre-eclampsia in a first degree relative, and deemed to be at increased risk of recurrence of the disease were studied from week 14-32 of gestation and followed until delivery. INTERVENTIONS: Supplementation with a medical food-bars containing L-arginine plus antioxidant vitamins, antioxidant vitamins alone, or placebo-during pregnancy. MAIN OUTCOME MEASURE: Development of pre-eclampsia/eclampsia. RESULTS: 222 women were allocated to the placebo group, 228 received L-arginine plus antioxidant vitamins, and 222 received antioxidant vitamins alone. Women had 4-8 prenatal visits while receiving the bars. The incidence of pre-eclampsia was reduced significantly (χ(2) = 19.41; P < 0.001) in women randomised to L-arginine plus antioxidant vitamins compared with placebo (absolute risk reduction 0.17 (95% confidence interval 0.12 to 0.21). Antioxidant vitamins alone showed an observed benefit, but this effect was not statistically significant compared with placebo (χ(2) = 3.76; P = 0.052; absolute risk reduction 0.07, 0.005 to 0.15). L-arginine plus antioxidant vitamins compared with antioxidant vitamins alone resulted in a significant effect (P = 0.004; absolute risk reduction 0.09, 0.05 to 0.14). CONCLUSIONS: Supplementation during pregnancy with a medical food containing L-arginine and antioxidant vitamins reduced the incidence of pre-eclampsia in a population at high risk of the condition. Antioxidant vitamins alone did not have a protective effect for prevention of pre-eclampsia. Supplementation with L-arginine plus antioxidant vitamins needs to be evaluated in a low risk population to determine the generalisability of the protective effect, and the relative contributions of L-arginine and antioxidant vitamins to the observed effects of the combined treatment need to be determined. Trial registration Clinical trials NCT00469846.


Subject(s)
Antioxidants/administration & dosage , Arginine/administration & dosage , Dietary Supplements , Pre-Eclampsia/prevention & control , Vitamins/administration & dosage , Adult , Female , Food , Humans , Pregnancy , Pregnancy Outcome , Pregnancy, High-Risk , Prenatal Care
7.
Braz. j. vet. res. anim. sci ; 42(5): 333-338, 2005. tab, graf
Article in English | LILACS | ID: lil-433202

ABSTRACT

O objetivo deste estudo foi identificar mudanças do epitélio vaginal em fêmeas de Cerdo Pelón Mexicano, que ovularam durante o lactação, estágio causado pelo efeito da presença de macho e retirada da leitegada. A avaliação do estro foi feita através de citologia de raspado vaginal, observação do comportamento das fêmeas e por determinação de 17 ß estradiol e de progesterona no 8° dia após o início de lactação. Foram formados quatro grupos de fêmeas: Grupo 1 não sofreu estímulo; Grupo 2 permaneceu com o macho; Grupo 3 foi separado sua leitegada por 4 h e grupo 4 recebeu ambos estímulos. Amostras de raspado vaginal foram coletadas a cada 24 horas durante 5 dias após o estímulo. ANOVA para amostras repetidas foi realizada durante os 5 dias do teste. O estímulo utilizado no Grupo 4 causou modificações significativas (P < 0 001) quando comparado aos Grupos 1, 2 e 3. Os níveis de estradiol foram mais altos que 30 pg/ml no Grupo 4 no 10° dia pós parto e 4.5 ng/ ml de progesterona nos 11 ° e 12° dias pós parto. Ficou evidente que 100% das fêmeas nos Grupos 1,2 e 3 não mostraram atividade de estro quando foi relacionado citologia vaginal com o comportamento estral e determinação hormonal da fase de lactação das fêmeas, ao passo que 100% das fêmeas no Grupo 4 apresentaram estro 72 horas após os estímulos e ovularam 24 a 36 horas do início do cio, o que foi comprovado pela determinações de estradiol e progesterona, respectivamente.


Subject(s)
Animals , Estrus , Vaginal Smears/methods , Estradiol/analysis , Ovulation , Progesterone/analysis , Swine
8.
Rev. cuba. enferm ; 19(3)sept.-dic. 2003. tab
Article in Spanish | LILACS, CUMED | ID: lil-360486

ABSTRACT

La autoeficacia o juicio autoreferido es la capacidad para llevar a cabo una conducta o acción concreta, es un término utilizado en los últimos tiempos en la educación para la salud. Se realizo revisión bibliográfica del término asociándolo a la deshabituación tabáquica y el papel jugado por la enfermera para aumentar la autoeficacia en sus pacientes. Se hizo un estudio piloto de corte transversal, donde se aplicó una escala de medición de autoeficacia percibida a 51 pacientes dispuestos a dejar de fumar. El estudio se realizó en el consultorio del médico y enfermera de familia número 36 del policlínico 28 de septiembre del municipio Santiago de Cuba. Los pacientes se siguieron por 3 meses y se encontró que los 31 fumadores que tuvieron mayor autoeficacia se mantuvieron con más alta tasa de abstinencia que los 20 que tuvieron más baja puntuación. Se hace resalta la estrategia que puede desarrollar la enfermera para elevar la autoeficacia en la atención primaria de salud. Se demostró como el nivel de autoeficacia percibida predijo la posibilidad de éxito de abstinencia demostrándose que a mayor nivel de autoeficacia mayor porcentaje de abstinencia. Los resultados confirmaron el papel tan importante de educadora que tiene la enfermera para lograr que el paciente se sienta motivado, aconsejado, sensibilizado y capaz de dejar el habito de fumar(AU)


The autoeficacia or trial autoreferido is the capacity to carry out a behavior or concrete action, it is a term used in the last times in the education for the health. One carries out bibliographical revision of the term associating it to the deshabituación tabáquica and the paper played by the nurse to increase the autoeficacia in their patients. A study pilot of traverse court was made, where a scale of autoeficacia mensuration was applied perceived 51 patients willing to stop to smoke. The study was carried out in the doctor's clinic and nurse of family number 36 of the policlínico September of the municipality 28 Santiago from Cuba. The patients were continued by 3 months and it was found that the 31 smokers that had bigger autoeficacia stayed with higher rate of abstinence that the 20 that had lower punctuation. It is made it stands out the strategy that the nurse can develop to elevate the autoeficacia in the primary attention of health. It was demonstrated as the level of perceived autoeficacia it predicted the possibility of success of abstinence being demonstrated that at more level of autoeficacia bigger percentage of abstinence. The results confirmed the paper so important of educating that has the nurse to achieve the patient to be motivated, advised, sensitive and able of leaving the I inhabit of smoking(AU)


Subject(s)
Humans , Male , Female , Primary Health Care , Tobacco Use Disorder/prevention & control , Health Education/methods , Smoking Cessation/methods , Self Efficacy , Nurse's Role , Review Literature as Topic , Tobacco Use Cessation/psychology , Health Promotion/methods
9.
Rev. cuba. enferm ; 19(3)sept.-dic.2003. tab
Article in Spanish | CUMED | ID: cum-22864

ABSTRACT

La autoeficacia o juicio autoreferido es la capacidad para llevar a cabo una conducta o acción concreta, es un término utilizado en los últimos tiempos en la educación para la salud. Se realizo revisión bibliográfica del término asociándolo a la deshabituación tabáquica y el papel jugado por la enfermera para aumentar la autoeficacia en sus pacientes. Se hizo un estudio piloto de corte transversal, donde se aplicó una escala de medición de autoeficacia percibida a 51 pacientes dispuestos a dejar de fumar. El estudio se realizó en el consultorio del médico y enfermera de familia número 36 del policlínico 28 de septiembre del municipio Santiago de Cuba. Los pacientes se siguieron por 3 meses y se encontró que los 31 fumadores que tuvieron mayor autoeficacia se mantuvieron con más alta tasa de abstinencia que los 20 que tuvieron más baja puntuación. Se hace resalta la estrategia que puede desarrollar la enfermera para elevar la autoeficacia en la atención primaria de salud. Se demostró como el nivel de autoeficacia percibida predijo la posibilidad de éxito de abstinencia demostrándose que a mayor nivel de autoeficacia mayor porcentaje de abstinencia. Los resultados confirmaron el papel tan importante de educadora que tiene la enfermera para lograr que el paciente se sienta motivado, aconsejado, sensibilizado y capaz de dejar el habito de fumar(AU)


Subject(s)
Humans , Male , Female , Self Efficacy , Health Education , Tobacco Use Disorder/prevention & control , Primary Health Care , Health Promotion , Tobacco Use Cessation , Tobacco Use Cessation , Nurse's Role
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