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Search Results: 1 - 10 of 204197 matches for " Manuel Gómez Alzugaray "
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Efectos del implante norplant sobre el metabolismo de los lípidos durante 3 a?os de uso
Gómez Alzugaray,Manuel; Santana Pérez,Felipe; Real Cancio,Rosa María;
Revista Cubana de Obstetricia y Ginecolog?-a , 2001,
Abstract: with the objective of studying the possible effect of subdermal “norplant” implant on the lipid and lipoprotein metabolism during the 3 first years of use in 33 healthy females aged 21-32 years, blood samples were taken from the 5th to 8th day of their menstrual cycles prior to the insertion of the implant, and later annually, to determine the levels of total cholesterol, tryglycerides, hdl-cholesterol, ldl-cholesterol and apolipoproteins a1 and b. the atherogenesis indexes were calculated: ldl-cholesterol/total cholesterol; hdl-cholesterol/total cholesterol; hdl-cholesterol/ldl-cholesterol and apo al/apo b. a decrease in the average cholesterol and ldl-cholesterol levels was observed during these three years, but without being statistically significant. it was confirmed that there were changes in the tryglyceride levels whereas those of apolipoprotein a1 significantly lowered after 24 months (p
Deficiencia androgénica en hombres de 60 a os y más del área de salud Vedado Androgen deficiency in men aged 60 or more from Vedado health area
Eduardo álvarez Seijas,Gilda Monteagudo Pe?a,Manuel Gómez Alzugaray,Celeste Arranz Calzado
Revista Cubana de Endocrinología , 2009,
Abstract: El declinar de la función testicular propia del envejecimiento ha adquirido relevancia en los últimos a os, sin embargo aún no se conoce su prevalencia, ni existe uniformidad para el diagnóstico. Se realizó un estudio descriptivo transversal con el objetivo de determinar la prevalencia y características clínico-hormonales del déficit androgénico en varones de 60 a os y más. Se incluyeron 70 sujetos de un área de salud, seleccionados mediante muestreo aleatorio estratificado polietápico, a los cuales se interrogó sobre la presencia de síntomas de deficiencia androgénica, se les realizó examen físico general y genital y determinaciones de testosterona total, hormona luteinizante y hormona folículo estimulante en sangre periférica. De acuerdo con las concentraciones de la testosterona se dividieron en 2 grupos: a) sujetos con deficiencia androgénica y b) sujetos sin deficiencia androgénica. Los que presentaron déficit androgénico tenían un peso significativamente superior, una proporción mayor de obesidad y una talla significativamente inferior. Los síntomas de déficit androgénico fueron frecuentes, los refirieron indistintamente los integrantes de ambos grupos y se presentaron independientemente de las concentraciones de las hormonas sexuales. En general, las gonadotropinas estaban aumentadas fundamentalmente a expensas de hormona folículo estimulante y su comportamiento fue independiente de las concentraciones de testosterona. Decline of testicular function typical of aging has acquired relevance in past years, however yet it is unknown its prevalence and there is not evenness for its diagnosis. A cross-sectional and descriptive study was made to determine the prevalence and clinical-hormonal features of androgen deficit in males aged 60 or more. Included are 70 subjects from a health area selected by multistage stratified randomized sampling that were interrogated about presence of androgen deficiency syndrome and underwent a physical and genital examination and total testosterone determinations, luteinizing hormone and follicle-stimulating hormone in peripheral blood. According the testosterone concentrations they were divided into two groups: a) subjects presenting with androgen deficiency and b) subjects without this type of deficiency. Those with androgen deficit had a higher weight, a higher obesity ratio, and a significantly lower height. The symptoms of androgen deficit were frequent, recounted indiscriminately by both groups and independently of sexual hormone concentrations. Generally, gonadotropins were increased mainly at the expense of folli
Efectos del implante norplant sobre el metabolismo de los lípidos durante 3 a os de uso Effect of the Norplant implant on the lipid metabolism during 3 years of use.
Manuel Gómez Alzugaray,Felipe Santana Pérez,Rosa María Real Cancio
Revista Cubana de Obstetricia y Ginecolog?-a , 2001,
Abstract: Con el objetivo de estudiar la posible repercusión en el metabolismo de los lípidos y las lipoproteínas del implante subdérmico "norplant" durante los 3 primeros a os de uso en 33 mujeres sanas con edades de 21 a 32 a os, se tomaron muestras sanguíneas entre los días quinto y octavo del ciclo menstrual, previo a la inserción del implante y luego anualmente, para determinar los niveles de colesterol total, triglicéridos, HDL-col, LDL-col y apolipoporoteínas A1 y B. Se calcularon los índices de aterogenicidad: LDL-col/colesterol total; HDL-col/colesterol total; HDL-col/LDL-col y Apo A1 / Apo B. Se observó descenso en los niveles promedio del colesterol y LDL-col durante los 3 a os, pero sin significación estadística. Se corroboró que hubo cambios en los niveles de los triglicéridos, mientras los de apolipoproteína A1 descendieron significativamente a los 24 meses (p < 0,05) y también los valores medios de la HDL-col, en forma significativa (p < 0,001). Los índices de aterogenicidad no mostraron cambios durante el período de estudio. Se concluyó que, durante los 3 a os de uso, del implante subdérmico norplant, no se encontró riesgo cardiovascular importante, pues a pesar del descenso de los valores de la HDL-col, los índices aterogénicos calculados no variaron. With the objective of studying the possible effect of subdermal “Norplant” implant on the lipid and lipoprotein metabolism during the 3 first years of use in 33 healthy females aged 21-32 years, blood samples were taken from the 5th to 8th day of their menstrual cycles prior to the insertion of the implant, and later annually, to determine the levels of total cholesterol, tryglycerides, HDL-cholesterol, LDL-cholesterol and apolipoproteins A1 and B. The atherogenesis indexes were calculated: LDL-cholesterol/total cholesterol; HDL-cholesterol/total cholesterol; HDL-cholesterol/LDL-cholesterol and Apo Al/Apo B. A decrease in the average cholesterol and LDL-cholesterol levels was observed during these three years, but without being statistically significant. It was confirmed that there were changes in the tryglyceride levels whereas those of apolipoprotein A1 significantly lowered after 24 months (p
Características de la posmenopausia en mujeres con diabetes tipo 1
Licea Puig,Manuel E.; álvarez Altamirano,Víctor Alfonso; Monteagudo Pérez,Gilda; Gómez Alzugaray,Manuel;
Revista Cubana de Endocrinolog?-a , 2007,
Abstract: in diabetic women menospause occur in earliest ages. aim ot present paper is to identify feaures of spontaneous menopause and postmenopause in a group of women presenting with type 1 diabetes (1 dm). a transversal and descriptive study was conducted in 60 postmenaopausal women presenting with 1 md aged 40-59, and in 80 comparable non-diabetec women (control group) with chronic diseases, apparently healthy. study women were resident in urban areas and have an spontaneous menopause. women with menopause of surgical cause, or other iatrogenic causes were excluded. age, body mass index, smoking, habit intensity, pregnancies, age in first pregnancy, birth rate, age in first birth, breast feeding, age in menarche, and stages of postmenospause, presence of symptoms and its severity. in diabetic women evoluliton time was conisered of 40,06 ? 4,68 years, and in those non-diabetec aged 49,32 ? 3,22, p <0,003. smoking, labor and births rate, breast feeding, and age of menarche, weren't associated with age of menopause in diabetec women. it was confirmed that chronologic age and that of menaopause were smaller in women presenting with 1 md. there aren't relevant differences related to symptoms and its severity, among women presenting with and without 1 md.
Características de la posmenopausia en mujeres con diabetes tipo 1 Features of postmenospause in women presenting with Type 1 diabetes
Manuel E. Licea Puig,Víctor Alfonso álvarez Altamirano,Gilda Monteagudo Pérez,Manuel Gómez Alzugaray
Revista Cubana de Endocrinología , 2007,
Abstract: En las diabéticas la menopausia ocurre a edades más tempranas. El objetivo del presente estudio es identificar las características de la menopausia espontánea y la posmenopausia en un grupo de mujeres con diabetes tipo 1 (DM 1). Se realizó un estudio transversal y descriptivo en 60 mujeres posmenopáusicas con DM 1 en edades de 40-59 a os, y en 80 mujeres no diabéticas comparables (grupo control) sin enfermedades crónicas, aparentemente sanas. Las mujeres incluidas en el estudio son de procedencia urbana y tuvieron una menopausia espontánea. No se incluyeron mujeres con menopausia de causa quirúrgica u otras causas iatrogénicas. Se estudió: edad, índice de masa corporal, hábito de fumar, intensidad del hábito, número de embarazos, edad del primer embarazo, número de partos, edad del primer parto, lactancia materna, edad de la menarquia y las etapas de la posmenopausia, la presencia de síntomas y su severidad. En las diabéticas se consideró el tiempo de evolución de la DM 1. Se comprobó que la edad de la menopausia fue en las diabéticas de 40,06 ± 4,68 a os y en las no diabéticas de 49,32 ± 3,22 a os, p<0,003. El hábito de fumar, el número de embarazos y de partos, la lactancia y la edad de la menarquia no se asociaron con la edad de la menopausia en las diabéticas. Se confirmó que la edad cronológica y la de la menopausia fueron significativamente menores en las mujeres con DM 1. No existen diferencias relevantes en relación con los síntomas y su severidad, entre las mujeres con DM 1 y sin ella. In diabetic women menospause occur in earliest ages. Aim ot present paper is to identify feaures of spontaneous menopause and postmenopause in a group of women presenting with Type 1 diabetes (1 DM). A transversal and descriptive study was conducted in 60 postmenaopausal women presenting with 1 MD aged 40-59, and in 80 comparable non-diabetec women (control group) with chronic diseases, apparently healthy. Study women were resident in urban areas and have an spontaneous menopause. Women with menopause of surgical cause, or other iatrogenic causes were excluded. Age, body mass index, smoking, habit intensity, pregnancies, age in first pregnancy, birth rate, age in first birth, breast feeding, age in menarche, and stages of postmenospause, presence of symptoms and its severity. In diabetic women evoluliton time was conisered of 40,06 ? 4,68 years, and in those non-diabetec aged 49,32 ? 3,22, p <0,003. Smoking, labor and births rate, breast feeding, and age of menarche, weren't associated with age of menopause in diabetec women. It was confirmed that chronologic age
Deficiencia androgénica en hombres de 60 a?os y más del área de salud Vedado
álvarez Seijas,Eduardo; Monteagudo Pe?a,Gilda; Gómez Alzugaray,Manuel; Arranz Calzado,Celeste; álvarez álvarez,Aymeé; Sánchez Leyva,Silvia;
Revista Cubana de Endocrinolog?-a , 2009,
Abstract: decline of testicular function typical of aging has acquired relevance in past years, however yet it is unknown its prevalence and there is not evenness for its diagnosis. a cross-sectional and descriptive study was made to determine the prevalence and clinical-hormonal features of androgen deficit in males aged 60 or more. included are 70 subjects from a health area selected by multistage stratified randomized sampling that were interrogated about presence of androgen deficiency syndrome and underwent a physical and genital examination and total testosterone determinations, luteinizing hormone and follicle-stimulating hormone in peripheral blood. according the testosterone concentrations they were divided into two groups: a) subjects presenting with androgen deficiency and b) subjects without this type of deficiency. those with androgen deficit had a higher weight, a higher obesity ratio, and a significantly lower height. the symptoms of androgen deficit were frequent, recounted indiscriminately by both groups and independently of sexual hormone concentrations. generally, gonadotropins were increased mainly at the expense of follicle-stimulating hormone and its behavior was independent of the testosterone concentrations.
Equilibrium Dynamics in the Neoclassical Growth Model with Habit Formation and Elastic Labor Supply  [PDF]
Manuel A. Gómez
Theoretical Economics Letters (TEL) , 2012, DOI: 10.4236/tel.2012.25087
Abstract: This note analyzes the equilibrium dynamics in the neoclassical growth model with habit-forming preferences and elastic labor supply. Habits enter into utility in a multiplicative way. The specification of the habit formation process comprises the particular cases of internal and external habits. Existence, uniqueness and saddle-path stability of the steady state are proved analytically.
Public Spending in a Model of Endogenous Growth with Habit Formation
Manuel A. Gómez
Discrete Dynamics in Nature and Society , 2010, DOI: 10.1155/2010/514329
Abstract: This paper introduces habit-forming preferences in a Barro-type endogenous growth model with productive public services. Government expenditure, which may be subject to congestion, is financed by distortionary income taxation. Different from the standard time-separable model, the presence of habits makes the economy feature transitional dynamics, which are solved in closed form. Setting the income tax so as to equate the elasticity of public services in production is shown to maximize both long-run growth and welfare as in the standard model. This second-best solution coincides with the first-best outcome only in the presence of proportional congestion. 1. Introduction Following the seminal work of Barro [1], the effect of productive government expenditure has been the subject of active research in the theoretical literature on endogenous growth (see, e.g., Irmen and Kuehnel [2], for a recent survey). This interest has been stimulated by empirical work, starting from Aschauer [3], providing compelling evidence that productive public spending has a positive impact on growth (see, e.g., the review by Romp and de Haan [4]). Barro [1] introduces the flow of government expenditure, which is fully financed by a distortionary income tax, as a productive input to private production. (Another strand of the literature, starting from Futagami et al. [5], considers that it is the accumulated stock of public capital, rather than the flow of current expenditure, that enters in the production function (see, e.g., Irmen and Kuehnel [2]).) Thus, public policy has two opposite effects on growth, which offset each other if the tax rate on income is equal to the elasticity of public spending in production. Under Cobb-Douglas technology, this growth-maximizing tax rate also maximizes intertemporal utility in a second-best sense. The ensuing literature has enriched the original Barro's setup to incorporate other relevant features such as, among others, adjustment costs [6], congestion [7, 8], public consumption services [9, 10], elastic labor supply [11], alternative government financing [9, 12], progressive taxation [13], rent-seeking [14, 15], finite lifetimes [16, 17], two countries [18], or stochastic growth [19, 20]. This paper adds to this literature by extending the Barro [1] model to incorporate habit-persistent preferences. In models with habit formation, individual's utility depends not only on her level of current consumption but also on how it compares to a reference level–-the habits stock. Recent empirical works by Chen and Ludvigson [21], Korniotis [22], and
THE WELFARE COST OF EXTERNAL HABITS: A QUANTITATIVE ASSESSMENT
Gómez,Manuel A;
Estudios de economía , 2010, DOI: 10.4067/S0718-52862010000100001
Abstract: this paper quantifies the welfare cost of consumption externalities in an endogenous growth model with habit formation. agent's utility depends on both current consumption and a reference consumption level determined by economy-wide average past consumption. although utility may be lower in the presence of consumption externalities, the welfare loss relative to the efficient growth path is found to be very small. this result is extremely robust to variations in the parameter values. however, there are relatively important differences in the timing of the welfare loss and in generational welfare.
Reforma fiscal y bienestar en la economía de México
Manuel A. Gómez
Economía Mexicana , 2004,
Abstract: En este trabajo se determina la estructura fiscal óptima en un modelo de crecimiento endógeno de la economía de México. El gasto público sería financiado por un impuesto sobre la renta. Si los rendimientos del capital y el trabajo pueden ser tasados a distintos tipos impositivos, el impuesto óptimo sobre los salarios sería nulo. Manteniendo constantes los parámetros de gasto público, el valor óptimo del impuesto sobre el consumo es cero. La presencia de externalidades no parece justificar un subsidio a la educación tan elevado como el estimado. Estos resultados se muestran relativamente robustos en el análisis de sensibilidad.
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