Condiciones de salud oral en ancianos del club geriátrico “Abue-Club” en Paraguay / Oral health conditions in elderly of the geriatric club “Abue-Club” in Paraguay

El objetivo del estudio fue describir las condiciones de salud oral en personas mayores de 60 años del club geriátrico “Abue-Club”, Parroquia Virgen de Fátima-Barcequillo-San Lorenzo–Paraguay. Estudio descriptivo de corte transversal en adultos mayores de 60 años, que incluyó la exploración bucodental, evaluación de saliva post-estímulo y una encuesta para evaluar dieta, hábitos de higiene y acceso a los servicios de salud. El 63,9% de los evaluados era del sexo femenino con una mediana de edad de 72,6 años y en varones 68,8 años. El Índice CPOD total fue 23,4, con una prevalencia de caries activa del 75%. El 33,3% presentó edentulismo total (39,1% en mujeres y 23,1% en hombres). El 83,3% tenía más de la mitad de sus dientes ausentes, con mayor frecuencia en mujeres (86,9%). El 69,4% utilizaba prótesis, de los cuales el 56% usaba prótesis total. La prevalencia de enfermedad periodontal por el Índice de Russel fue de 66,7%; 70,8% con lesiones destructivas óseas y/ó bolsas periodontales. El 89% de la población presentó saliva fluida y 75% en cantidad normal (>1 ml). El 56% de los participantes acudió a un servicio odontológico un año o menos antes del estudio, siendo más frecuente en mujeres (69,5%). El grupo de estudio presentó marcado deterioro de salud oral, caracterizado por el edentulismo parcial y total, con alta frecuencia de uso de prótesis total; por tanto urge la necesidad de promoción de salud, con énfasis en la prevención de pérdidas dentarias y alternativas de rehabilitación protésica.

The objective of the study was to describe the oral health conditions of people over 60years from the geriatric grandparents club, Virgen de Fatima Parish-San LorenzoBarcequillo-Paraguay.It was a cross-sectional study carried out in adults over 60 years,which included oral examination, evaluation of post-stimulus saliva and a survey to assessdiet, oral hygiene and access to health services. Sixty three point nine percent (63.9%) ofthose tested were women with a median age of 72.6 years and 68.8 years for men. Theoverall DMFT index was 23.4, with a prevalence of 75% active caries. Thirty three pointthree (33.3%) were edentulous (39.1% women and 23.1% men) and 83.3% had more thanhalf his teeth missing, which was observed more frequently in women: 86.9%. A prosthesiswas used by 69.4% and 56% had full dentures. The prevalence of periodontal disease byRussel Index was 66.7%, 70.8% with destructive bone lesions and/or periodontal pockets.Eighty nine percent of the population had fluid saliva and 75% normal amount (>1 ml).Fifty six percent (56%) went to dental services one year or less before the study and thiswas more frequent in women (69.5%). The study group showed marked deterioration oftheir oral health, characterized by partial and total edentulism, with high frequency of theuse of a total prosthesis. Therefore, there is an urgent need for health promotion, withemphasis on the prevention of tooth loss and alternatives prosthetic rehabilitation.

Comparison of homocysteinemia and MTHFR 677CT polymorphism with Framingham Coronary Heart Risk Score / Comparación de homocisteinemia y polimorfismo 677CT MTHFR con el Escore Framingham de Riesgo Coronario

Objective: The Framingham Coronary Heart Disease Risk Score is an important clinical tool. The aim of this cross-sectional study was to compare plasma homocysteine levels and polymorphism 677CT MTHFR with this score to determine the utility of these new biomarkers in clinical practice. Methods: Plasma homocysteine levels determined by chemiluminescence and polymorphism 677CT MTHFR, detected by PCR-RFLP, were compared with Framingham coronary risk score in a cross-sectional survey on 68 men and 165 women. Results: Coronary heart disease risk augmented with an increase in the quartile of plasma homocysteine. In the 2nd, 3rd and 4th quartile of plasma homocysteine, men showed significantly (P < 0.001) higher risk than women. For the highest quartile of plasma homocysteine, OR of high-risk (10-year risk ≥ 20%) compared with the lowest quartile was 17.45 (95% CI: 5.79-52.01). Frequencies of CT and TT genotype and T allele were not over-represented in the individuals with score ≥ 10%. The higher plasma homocysteine concentrations in individuals with score ≥ 10% with respect to those with low risk (P < 0.005 and P < 0.001) were not due to the presence of T allele. The T allele (CT + TT genotypes) of the MTHFR C677T polymorphism was not significantly associated with an increased risk of coronary disease (OR = 1.09, 95% CI = 0.50-2.39, P = 0.844). Conclusions: The present study demonstrated an association between plasma homocysteine levels and the severity of coronary heart disease estimated with the Framingham coronary risk score, and this association appeared to be independent on the genotype of MTHFR. We postulate that plasma homocysteine is effective enough, considered even in isolation.

Objetivo: La puntuación del riesgo coronario de Framingham es una importante herramienta clínica. El objetivo del presente estudio transversal fue comparar los niveles plasmáticos de homocisteína plasmática y el polimorfismo 677CT de la MTHFR con esta herramienta para determinar la utilidad de estos nuevos biomarcadores en la práctica clínica. Métodos: Los niveles de homocisteína plasmática determinados por quimioluminiscencia y el polimorfismo 677CT MTHFR por PCR-RFLP fueron comparados con la puntuación del riesgo coronario de Framingham en un estudio transversal sobre 68 hombres y 165 mujeres. Resultados: El riesgo de enfermedad coronaria aumentó con el incremento en los cuartiles de homocisteína plasmática. En el segundo, tercero y cuarto cuartil de homocisteína plasmática los hombres mostraron significativamente (p < 0.001) mayor riesgo que las mujeres. Para el cuartil más alto de homocisteína plasmática, la OR de riesgo alto (riesgo a 10 años ≥ 20%) comparado con el cuartil más bajo fue 17,45 (IC 95%: 5,79-52,01; p < 0.001). Las frecuencias de los genotipos CT y TT y del alelo T no estuvieron aumentados en los individuos con una puntuación ≥ 10%. Las mayores concentraciones de homocisteína plasmática en los individuos con una puntuación ≥ 10% respecto a los de bajo riesgo (p < 0.005 y p < 0.001) no se debieron a la presencia del alelo T. El alelo T (genotipos CT + TT) del polimorfismo MTHFR C677T no estuvo significativamente asociado con mayor riesgo de enfermedad coronaria (OR = 1.09, IC 95% = 0.50-2.39, p = 0.844). Conclusiones: El presente estudio mostró una asociación entre los niveles de homocisteína plasmática y la severidad de la enfermedad coronaria estimada con el algoritmo de puntuación de riesgo coronario de Framingham y esta asociación resultó ser independiente del genotipo de MTHFR. Postulamos que la homocisteína plasmática es lo suficientemente eficaz, estudiada incluso aisladamente.

Comparison of homocysteinemia and MTHFR 677CT polymorphism with Framingham Coronary Heart Risk Score.

OBJECTIVE: The Framingham Coronary Heart Disease Risk Score is an important clinical tool. The aim of this cross-sectional study was to compare plasma homocysteine levels and polymorphism 677CT MTHFR with this score to determine the utility of these new biomarkers in clinical practice. METHODS: Plasma homocysteine levels determined by chemiluminescence and polymorphism 677CT MTHFR, detected by PCR-RFLP, were compared with Framingham coronary risk score in a cross-sectional survey on 68 men and 165 women. RESULTS: Coronary heart disease risk augmented with an increase in the quartile of plasma homocysteine. In the 2nd, 3rd and 4th quartile of plasma homocysteine, men showed significantly (P<0.001) higher risk than women. For the highest quartile of plasma homocysteine, OR of high-risk (10-year risk≥20%) compared with the lowest quartile was 17.45 (95% CI: 5.79-52.01). Frequencies of CT and TT genotype and T allele were not over-represented in the individuals with score≥10%. The higher plasma homocysteine concentrations in individuals with score≥10% with respect to those with low risk (P<0.005 and P<0.001) were not due to the presence of T allele. The T allele (CT+TT genotypes) of the MTHFR C677T polymorphism was not significantly associated with an increased risk of coronary disease (OR=1.09, 95% CI=0.50-2.39, P=0.844). CONCLUSIONS: The present study demonstrated an association between plasma homocysteine levels and the severity of coronary heart disease estimated with the Framingham coronary risk score, and this association appeared to be independent on the genotype of MTHFR. We postulate that plasma homocysteine is effective enough, considered even in isolation.

Association of methylenetetrahydrofolate reductase gene 677C>T polymorphism with hypertension in older women in a population of Buenos Aires City.

We examined the relationship between the 677C >T polymorphism in the MTHFR gene and tHcy in normotensive (NT) and hypertensive (HT) subjects and the influence of sex and age in a cross-sectional study. Smoking habits, history of vascular disease, diabetes, and tHcy were significantly associated with T allele as hypertension risk factors. The T allele was significantly related with higher tHcy in (i) men versus women (P < .01), (ii) men and women older than 47 years versus the younger ones (P < .05 and P < .001, respectively), (iii) HT women versus NT women (P < .01), and (iv) older HT women versus older NT women (P < .01). We found an association between the 677C>T MTHFR polymorphism and tHcy with hypertension that in women is manifested with age.

Corticoadrenal activity in rat regulates betaine-homocysteine S-methyltransferase expression with opposite effects in liver and kidney.

Betaine-homocysteine S-methyltransferase (BHMT) is an enzyme that converts homocysteine (Hcy) to methionine using betaine as a methyl donor. Betaine also acts as osmolyte in kidney medulla, protecting cells from high extracellular osmolarity. Hepatic BHMT expression is regulated by salt intake. Hormones, particularly corticosteroids, also regulate BHMT expression in rat liver. We investigated to know whether the corticoadrenal activity plays a role in kidney BHMT expression. BHMT activity in rat kidneys is several orders of magnitude lower than in rat livers and only restricted to the renal cortex. This study confirms that corticosteroids stimulate BHMT activity in the liver and, for the first time in an animal model, also up-regulate the BHMT gene expression. Besides, unlike the liver, corticosteroids in rat kidney down-regulate BHMT expression and activity. Given that the classical effect of adrenocortical activity on the kidney is associated with sodium and water re-absorption by the distal tubule leading to volume expansion, by promoting lesser use of betaine as a methyl donor, corticosteroids would preserve betaine for its other role as osmoprotectant against changes in the extracellular osmotic conditions. We conclude that corticosteroids are, at least in part, responsible for the inhibition of BHMT expression and activity in rat kidneys.

[Paraoxonase: its multiple functions and pharmacological regulation]. / Paraoxonasa: sus múltiples funciones y regulación farmacológica.

Homocysteine, a non-protein amino acid, important risk factor for atherosclerosis and thrombosis, causes dysfunction of vascular endothelial cells traduced in inadequate vasodilatation mechanism, is pro-inflammatory and induces endoplasmic reticulum stress. The more reactive conformation is the homocysteine thiolactone (HcyT), product to the nonspecific action of methionyl-tRNA synthetase, which is incorporated into proteins by disulfide bonds (S-homocysteinilation) or amide bonds (N-homocysteinilation) affecting protein structure and function leading to cell toxicity, autoimmune responses and atherogenesis. The enzyme paraoxonase-1 (PON1), part of high density lipoprotein (HDL), had been studied only for its ability to hydrolyze organophosphate derivatives. But, more recently it has been attributed other important role. The enzyme activities are involving in protecting against the development of atherosclerosis, by preventing oxidation of lipoproteins and hydrolyze HcyT. There is growing evidence about the protective role of PON1 in vascular disease. Genetic factors (polymorphisms of the PON1), environmental and lifestyle influence their concentration and biological activity, but drugs used as cardioprotectives and lipid-lowering or others, such as antibiotics and steroids, are also important modulators. This review is an updated of the most prominent information on clinical and experimental studies for understanding the role of the PON-1 in the protection against development of atherosclerosis.

Paraoxonasa: sus múltiples funciones y regulación farmacológica / Paraoxonase: its multiple functions and pharmacological regulation

La homocisteína, aminoácido no-proteico, es un importante factor de riesgo de aterosclerosis y trombosis, afecta la vasodilatación y la función normal del endotelio vascular, es pro-inflamatoria e induce estrés de retículo endoplásmico. Su conformación más reactiva, la homocisteína tiolactona, producto de la acción no específica de la metionil-t RNA sintetasa, se incorpora a proteínas mediante puentes disulfuro (S-homocisteinilación) o uniones amida (N-homocisteinilación) produciendo graves efectos sobre la estructura y función proteica conduciendo a toxicidad celular, respuestas autoinmunes y aterogénesis. La enzima paraoxonasa-1, integrante de la lipoproteína de alta densidad, fue inicialmente considerada por su capacidad de hidrolizar derivados organofosfato, pero luego se le atribuyó un importante papel protector contra la aterosclerosis por prevenir la oxidación de lipoproteínas e hidrolizar homocisteína tiolactona. Existen evidencias acerca del papel de paraoxonasa-1 en la enfermedad vascular. Los factores genéticos (polimorfismos de la paraoxonasa-1), ambientales y el estilo de vida influyen sobre su concentración y actividad biológica, pero distintos fármacos como hipolipemiantes o cardioprotectores y otros, como antibióticos y esteroides, son también importantes moduladores. En la presente revisión se actualiza la más destacada información sobre los estudios clínicos y experimentales que permiten entender el papel que cumple esta enzima en la protección ante el desarrollo de la aterosclerosis.

Homocysteine, a non-protein amino acid, important risk factor for atherosclerosis and thrombosis, causes dysfunction of vascular endothelial cells traduced in inadequate vasodilatation mechanism, is pro-inflammatory and induces endoplasmic reticulum stress. The more reactive conformation is the homocysteine thiolactone (HcyT), product to the nonspecific action of methionyl-tRNA synthetase, which is incorporated into proteins by disulfide bonds (S-homocysteinilation) or amide bonds (N-homocysteinilation) affecting protein structure and function leading to cell toxicity, autoimmune responses and atherogenesis. The enzyme paraoxonase-1 (PON1), part of high density lipoprotein (HDL), had been studied only for its ability to hydrolyze organophosphate derivatives. But, more recently it has been attributed other important role. The enzyme activities are involving in protecting against the development of atherosclerosis, by preventing oxidation of lipoproteins and hydrolyze HcyT. There is growing evidence about the protective role of PON1 in vascular disease. Genetic factors (polymorphisms of the PON1), environmental and lifestyle influence their concentration and biological activity, but drugs used as cardioprotectives and lipid-lowering or others, such as antibiotics and steroids, are also important modulators. This review is an updated of the most prominent information on clinical and experimental studies for understanding the role of the PON-1 in the protection against development of atherosclerosis.

Study on homocysteine levels and methylenetetrahydrofolate reductase gene variant (C677T) in a population of Buenos Aires City.

UNLABELLED: The substitution of cytosine (C) by thymine (T) at nucleotide 677 of the methylenetetrahydrofolate reductase (MTHFR) gene, which converts an alanine to a valine residue, is a frequent polymorphism with reduced specific activity, associated with moderate increase in plasma homocysteine levels (tHcy) and risk of vascular diseases. OBJECTIVES: This study was designed to investigate an association of this polymorphism with tHcy and vascular risk factors. METHODS: We used a cross-sectional study on subjects affiliated to three health centers from Buenos Aires city. The diagnosis of hypertension was ascertained by patients' clinical history. Only subjects under long-term antihypertensive treatment were included. RESULTS: Samples from 138 physically active individuals (44 men and 94 women) randomly selected were included. The mean tHcy was significantly higher amongst hypertensives (HT) than normotensives (NT). The risk of hypertension was compared in subjects with CC genotype and the combined number of subjects with at least one T allele (CT/TT). There was no significant difference regarding the risk of hypertension between NT and HT groups in the overall sample. However, as obesity is considered a risk factor for hypertension development, when only HT (n = 29) and NT (n = 66) subjects with body mass index below 30 kg/m(2) (BMI<30) were compared, subjects bearing CT/TT presented a significantly higher risk of hypertension than those bearing the CC genotype and significantly higher concentration of tHcy. CONCLUSIONS: Our results indicate an association of hyper-tHcy and MTHFR C677T mutation with hypertension. MTHFR C677T mutation may contribute to hypertension or affect the development of hypertension through hyperhomocysteinemia.

Cirugía de las lesiones benignas traqueales evolución alejada / Surgery of the tracheal benign injuries remote evolution

Antecedentes: Las estenosis laringotraqueales benignas se originan en su mayoría como consecuencia de la asistencia mecánica (ARM) prolongada. Las medidas terapéuticas a emplear dependerán del grado de obstrucción de la via aérea. La endoscopia intervencionista constituye el primer paso hacia el tratamiento quirúrgico definitivo. Objetivo: Mostrar resultados a largo plazo. Lugar de aplicación: Hospital de Rehabilitación Respiratoria "María Ferrer". Diseño: Retrospectivo. Descriptivo. Pacientes y Métodos: Se analizaron 100 pacientes sometidos a resección y reconstrucción con anastomosis término-terminal por estenosis laringotraqueales benignas, elegidos al azar sobre más de 400 pacientes operados, con seguimiento mínimo posoperatorio de un año. 65 pacientes eran masculinos y 35 femeninos. La media de edad 33,8 años (rango 15-69). Más de 50% de los casos tuvieron algún tratamiento endoscópico previo (dilataciones, láser, endoprótesis). Se evaluaron los resultados del seguimiento alejado. Resultados: Se realizaron 80 plásticas traqueales y 23 subglóticas con los siguientes resultados: buenos en 81,6% de los casos, satisfactorios en 7,8% y fracasos en 5,8%. Las complicaciones posoperatorias más frecuentes fueron granulomas en la anastomosis e infección de herida quirúrgica. La mortalidad alejada ha sido 2%. Conclusiones: 1. Las lesiones laringotraqueales secuelares post asistencia respiratorias mecánica prolongada continúan siendo frecuentes pese a las medidas destinadas a su prevención. 2. El seguimiento alejado ha demostrado que el índice de recidivas y/o complicaciones es extremadamente bajo, teniendo en cuenta el número de pacientes con lesiones más complejas (subglóticas y con cirugías previas) de esta muestra. 3. Si bien las prótesis endoluminales han resuelto lesiones complejas y resultan de gran utilidad, su uso indiscriminado debe ser evitado. 4. Los resultados son más exitosos y las cirugías de resección y reconstrucción debe ser considerada de...

La institucion, el psicoanalista y el tratamiento del goce

Publicación del: Centro de Investigación y Estudios Clínicos, asociado con el Instituto del Campo Freudiano y el Area de Psicoanálisis del Ex Hospital Neuro - Psiquiátrico Provincial de Córdoba