Cognitive decline in adult-onset temporal lobe epilepsy: Insights from aetiology.

PURPOSE: To identify patients with adult-onset temporal lobe epilepsy (TLE) at risk of developing cognitive decline. Detecting which patients, aetiologies, or factors are most closely related with memory decline would allow us to identify patients that would eventually benefit from more specific treatment. METHODS: Single centre, retrospective analysis of a prospectively followed-up cohort study, including all patients with the diagnosis of adult-onset TLE during 2013, with a minimum follow-up of five years. Memory and cognitive decline were analysed at 5 years and at last follow-up. RESULTS: Of 89 initially selected patients, 71 were included. After 5 years, 11/71 (15.5%) patients suffered cognitive decline, of which 1/71 (4%) developed dementia. At last follow-up (range 65-596 m) a total of 34/71 (47.8%) patients were diagnosed with cognitive decline, specifically either memory decline or dementia. Cognitive decline at 5 years was related to: 1. Age at onset: 62.65 years (SD 9.04) in the group with cognitive decline vs 50.33 y. (SD 13.02 in the group without cognitive decline; p=0.004); 2. Onset as status epilepticus (3/6 in patients with memory decline vs 8/65 in patients without cognitive decline; p=0.04); 3. Immune aetiology: 42% compared with unknown (10%) and structural (10%) aetiologies; p=0.036; 4. Hippocampal sclerosis on MRI: 5/11 patients with cognitive decline vs 9/51 patients without cognitive decline; p=0.035. Cognitive decline was not related to seizure frequency, sex, or age (p=0.78; p=0.40; p=0.95, respectively). CONCLUSIONS: Older age at epilepsy onset, onset as status epilepticus, immune aetiology, and hippocampal sclerosis are risk factors for developing cognitive decline in patients with adult-onset temporal lobe epilepsy.

Field efficacy of Metarhizium anisopliae oil formulations against Rhipicephalus microplus ticks using a cattle spray race.

Rhipicephalus microplus tick is the main ectoparasite of cattle in Brazil. The exhaustive use of chemical acaricides to control this tick has favored the selection of resistant tick populations. Entomopathogenic fungi, as Metarhizium anisopliae, has been described as a potential biocontroller of ticks. Therefore, the aim of this study was to evaluate the in vivo efficacy of two oil based formulations of M. anisopliae for the control of the cattle tick R. microplus under field conditions using a cattle spray race as a method of treatment. Initially, in vitro assays were carried out with an aqueous suspension of M. anisopliae, using mineral oil and/or silicon oil. A potential synergism between oils and fungus conidia for tick control was demonstrated. Additionally, the usefulness of silicon oil in order to reduce mineral oil concentration, while improving formulation efficacy was illustrated. Based on the in vitro results, two formulations were selected for use in the field trial: MaO1 (107 conidia/mL plus 5% mineral oil) and MaO2 (107 conidia/mL plus 2.5% mineral oil and 0.01% silicon oil). The adjuvants concentrations (mineral and silicon oils) were chosen since preliminary data indicate that higher concentrations caused significant mortality in adult ticks. For this, 30 naturally infested heifers were divided into three groups based on previous tick counts. The control group did not receive treatment. The selected formulations were applied on animals using a cattle spray race. Subsequently, tick load was evaluated weekly by counting. The MaO1 treatment significantly reduced the tick count only on day +21, reaching approximately 55% efficacy. On the other hand, MaO2 showed significantly lower tick counts on days +7, +14, and +21 after treatment, with weekly efficacy achieving 66%. The results showed a substantial reduction of tick infestation, up to day +28, using a novel formulation of M. anisopliae based in the mixture of two oils. Moreover, we have shown, for the first time, the feasibility of employing formulations of M. anisopliae for large-scale treatment methods, such as a cattle spray race, which in turn, may increase the use and adhesion to biological control tools among farmers.

Morphometric variants of the paranasal sinuses in a Mexican population: expected changes according to age and gender.

BACKGROUND: There are developmental variations in the paranasal sinuses. Our objective was to determine their dimensions and volume stratified by age and sex and define the expected growth pattern. MATERIALS AND METHODS: A retrospective, observational study was performed including computed tomography (CT) of patients between 1 and 20 years of age. The volumes of the frontal, sphenoid, and maxillary sinuses were obtained. RESULTS: A total of 210 CT were included with a mean age of 10 ± 6.1 years, 106 (50.5%) were female. Groups were categorised in ranges of 5 years. Spearman correlation coefficients between the right and left sides were 0.843, 0.711, 0.916 for the frontal, sphenoid and maxillary sinuses. Post-hoc for the categorical age groups demonstrated statistically significant differences with values of p < 0.01, except between age groups 11-15 against ≥ 16 years of age (p = 0.8). Gender-related differences were evident with a higher air volume in girls in the 5-10-year-old group, while boys predominated in the rest of the groups. CONCLUSIONS: Computed tomography is ideal for pre-surgical sinus assessment. The maximum volume of paranasal sinuses is reached at the age of 15. There is a clear volumetric difference between age and gender groups. There is a direct relationship between a volume and its contralateral counterpart.

Clinical and molecular characterization of hereditary spastic paraplegia in a spanish Southern region.

INTRODUCTION: Spastic paraplegia (SPG) is a syndrome characterised by lower limb spasticity, occurring alone or in association with other neurological manifestations. Despite of the new molecular technologies, many patients remain yet undiagnosed. OBJECTIVE: The purpose of this study was to describe the clinical presentation and molecular characteristics of a cohort of 27 patients from 18 different families with SPG in the south of Spain. METHODS: We used a targeted next-generation sequencing (NGS) approach to study a proband from each family. RESULTS: Variants in SPG11 gene were the most common cause of SPG in our area. We made a genetic diagnosis in 52% of cases, identified 3 novel variants and reclassified one uncertain variant in SPG11 gene as pathogenic variant. We identified a patient with two truncanting mutations in SPG11 gene and late onset disease and report another missense mutation outside of motor domain of KIF1A gene in a family with pure SPG. CONCLUSION: Our study contributes to enhance the scientific knowledge of SPG. It is important to note the large group of cases (48%) that were not genetically diagnosed in our cohort. Therefore NGS approach is an efficient diagnostic tool, but it still large the number of non-diagnosed subjects, suggesting further genetic heterogeneity.

Intervalos de referencia de la tirotropina durante la gestación en la provincia de Huelva / Thyrotropin reference ranges during pregnancy in the province of Huelva, Spain

Objetivo: El diagnóstico correcto de hipotiroidismo gestacional requiere determinar los intervalos de referencia trimestrales locales de la TSH. En su ausencia las guías recomiendan utilizar como límites superiores 2,5-3,0-3,0μU/ml para el 1.°-2.°-3.° trimestre. Nuestro objetivo es calcular el rango de referencia para nuestra población. Material y métodos: Estudio observacional de base poblacional realizado en gestantes sanas de 11 centros de salud de la provincia de Huelva incluidas consecutivamente durante el año 2016 en el proceso de embarazo. Excluimos las gestantes con antecedentes de enfermedad tiroidea o médica, malos antecedentes obstétricos, embarazo gemelar, autoinmunidad tiroidea y TSH en valores extremos (<0,4μU/ml o>10μU/ml), así como las que durante el estudio iniciaron tratamiento con levotiroxina por disfunción tiroidea. Resultados: Seleccionamos 186 gestantes de 30,7 años (IC 95%: 29,8-31,6) e IMC de 23,6 (IC 95%: 23,2-24,0) que mayoritariamente se hicieron la 1.ª analítica con anterioridad a la 11.ª semana de gestación. Fueron válidas para el análisis 145-105-67 gestantes en el 1.°-2.°-3.° trimestre, respectivamente, tras excluir sucesivamente abortos (18,9%), autoinmunidad (6,5%), hipo/hipertiroidismos (2,2%) y tratamientos con levotiroxina durante el 2.°/3.° trimestre (18,6%). El percentil 97,5 de la TSH para el 1.°-2.°-3.° trimestre, respectivamente, fue de 4,68-4,83-4,57μU/ml. Durante el estudio se detectaron 80 gestantes con disfunción tiroidea (55,2%), recibiendo 33 de ellas tratamiento con levotiroxina (22,7%); con los nuevos criterios la prevalencia de disfunción tiroidea se reduciría al 6,2% y la necesidad de tratamiento al 4,1%. Conclusión: El rango de normalidad de TSH de nuestra población difiere del propuesto en las guías. Un 18,6% de las gestantes fueron tratadas innecesariamente

Objective: The correct diagnosis of hypothyroidism during pregnancy requires knowledge of the local trimester-specific thyrotropin (TSH) reference ranges. When these are not available, the guidelines recommend upper limits of 2.5, 3.0, and 3.0μU/ml for the 1st, 2nd, and 3rd trimesters, respectively. The aim is to establish the reference range for our local population. Material and methods: A population-based observational study was performed on healthy pregnant women from 11 healthcare centres in the province of Huelva. Women were recruited consecutively during 2016 through the pregnancy process. Women were excluded who had a history of thyroid or medical disease, a poor obstetric history, multiple pregnancy, thyroid autoimmunity, and extreme TSH values (<0.4μU/ml or>10μU/ml), as well as women treated with levothyroxine for thyroid dysfunction. Results: The study included a total of 186 pregnant women, with a mean age of 30.7 years (95% CI: 29.8-31.6) and a body mass index (BMI) of 23.6 (95% CI: 23.2-24.0). Most of them had the first laboratory tests performed before week 11 of pregnancy. Valid subjects for analysis were 145, 105, and 67 pregnant women in the 1st, 2nd, and 3rd trimesters, respectively, after excluding those due to abortion (18.9%), autoimmunity (6.5%), hypo/hyperthyroidism (2.2%), and levothyroxine treatment during the 2nd/3rd trimester (18.6%). The 97.5% TSH percentile for the 1st, 2nd, and 3rd trimester was 4.68, 4.83, and 4.57μU/ml, respectively. Thyroid dysfunction was identified in 80 women (55.2%), 33 of whom received treatment with Levothyroxine (22.7%). With the new criteria, thyroid dysfunction prevalence would be reduced to 6.2%, and the need for treatment to 4.1%. Conclusion: The reference range for TSH in our population differs from that proposed by the guidelines. Unnecessary treatment was being given to 18.6% of pregnant women

[Thyrotropin reference ranges during pregnancy in the province of Huelva, Spain]. / Intervalos de referencia de la tirotropina durante la gestación en la provincia de Huelva.

OBJECTIVE: The correct diagnosis of hypothyroidism during pregnancy requires knowledge of the local trimester-specific thyrotropin (TSH) reference ranges. When these are not available, the guidelines recommend upper limits of 2.5, 3.0, and 3.0µU/ml for the 1st, 2nd, and 3rd trimesters, respectively. The aim is to establish the reference range for our local population. MATERIAL AND METHODS: A population-based observational study was performed on healthy pregnant women from 11 healthcare centres in the province of Huelva. Women were recruited consecutively during 2016 through the pregnancy process. Women were excluded who had a history of thyroid or medical disease, a poor obstetric history, multiple pregnancy, thyroid autoimmunity, and extreme TSH values (<0.4µU/ml or>10µU/ml), as well as women treated with levothyroxine for thyroid dysfunction. RESULTS: The study included a total of 186 pregnant women, with a mean age of 30.7 years (95% CI: 29.8-31.6) and a body mass index (BMI) of 23.6 (95% CI: 23.2-24.0). Most of them had the first laboratory tests performed before week 11 of pregnancy. Valid subjects for analysis were 145, 105, and 67 pregnant women in the 1st, 2nd, and 3rd trimesters, respectively, after excluding those due to abortion (18.9%), autoimmunity (6.5%), hypo/hyperthyroidism (2.2%), and levothyroxine treatment during the 2nd/3rd trimester (18.6%). The 97.5% TSH percentile for the 1st, 2nd, and 3rd trimester was 4.68, 4.83, and 4.57µU/ml, respectively. Thyroid dysfunction was identified in 80 women (55.2%), 33 of whom received treatment with Levothyroxine (22.7%). With the new criteria, thyroid dysfunction prevalence would be reduced to 6.2%, and the need for treatment to 4.1%. CONCLUSION: The reference range for TSH in our population differs from that proposed by the guidelines. Unnecessary treatment was being given to 18.6% of pregnant women.

Perfiles metabolómicos de sujetos sanos y con cáncer de pulmón. Influencia de la carga tabáquica / The metabolomics of healthy subjects and those with lung cancer: the influence of smoking

INTRODUCCIÓN: la aplicación de técnicas metabolómicas presenta un gran potencial para la búsqueda de posibles biomarcadores de diagnóstico precoz en numerosas enfermedades. El empleo de procedimientos metabolómicos basados en espectrometría de masas permite estudiar las modificaciones metabólicas subyacentes al cáncer de pulmón (CP) y la influencia de la carga tabáquica (CT), medida en paquetes-año, en los correspondientes perfiles metabólicos. METODOLOGÍA: se estudió el suero de 9 controles sanos (no fumadores), 6 enfermos de CP con carga tabáquica moderada (CT 70). Se analizaron los metabolitos mediante técnicas de espectrometría de masas de alta resolución (DI-ESI-QTOFMS). Los perfiles metabólicos obtenidos se sometieron a análisis estadístico multivariante (PCA, PLS-DA). RESULTADOS: los tres grupos de estudio mostraron perfiles metabólicos claramente diferentes, lo que permitió identificar algunos posibles biomarcadores. Los niveles de glutatión se encontraron disminuidos en muestras de suero de pacientes con CP, mientras que se incrementó el contenido de distintos fosfolípidos de membrana (PL). La mayoría de estas anormalidades metabólicas se acentuó en pacientes con una CT elevada. CONCLUSIONES: el análisis metabolómico en muestras de suero permitió diferenciar claramente entre sujetos sanos y pacientes con CP. Así mismo, se identificaron posibles biomarcadores para el diagnóstico del CP (relacionados con rutas previamente conocidas en el proceso del cáncer). Además, estas alteraciones se vieron influenciadas por la carga tabáquica, confirmando la importancia del tabaquismo como factor de riesgo primario en el desarrollo del CP

By using high resolution metabolomics, we obtained the metabolomic profiles for patients who smoked and had lung cancer (LC) and a healthy, non-smoker control (HC) group; we assessed the influence of smoking on said profiles. The results show a clear discrimination between the metabolomic profiles of both groups studied; the metabolites causing said difference could be determined. Moreover, differences were encountered between the metabolomic profiles of heavy smokers with lung cancer compared to moderate smokers. INTRODUCTION: theapplicationof metabolomic techniques offers extensive potential to search for possible biomarkers in the early detection of several diseases. Using metabolomic procedures based on mass spectrometry allow us to study underlying metabolic changes in lung cancer and the influence of smoking, measured as packets/year, in the corresponding metabolic profiles. METHOD: the serum from 9 healthy control subjects (nonsmokers) was studied, as well as that of 6 patients with lung cancer who were moderate smokers (CT 70). The metabolites were analyzed using high resolution mass spectrometer techniques (DI-ESI-QTOF-MS). The metabolic profiles obtained were subject to multivariate statistical analysis (PCA, PLS-DA). RESULTS: the three groups studied showed clearly differentiated metabolic profiles, which facilitated the identification of certain biomarkers. Glutathione levels were found to be decreased in the sample from patients with lung cancer, while the content of various membrane phospholipids increased. Most of these metabolic abnormalities were heightened in patients who were heavy smokers. CONCLUSIONS: the metabolomics analysis in serum samples clearly differentiated healthy subjects from patients with lung cancer. Also, possible biomarkers were identified to diagnose lung cancer (linked to previously known routes in the cancer process. Moreover, these alterations were influenced by the amount smoked, thus confirming the importance of smoking as a primary risk factor in developing lung cáncer

Diabetes mellitus tipo 1: breve revisión de los principales factores psicológicos asociados / Type 1 Diabetes mellitus: Brief review of the main associated psychological factors

La diabetes mellitus tipo 1 (DM1) es una enfermedad crónica ampliamente extendida entre la población infantojuvenil. Suele suponer una sobrecarga significativa en el niño y su familia, modificando aspectos en su estilo de vida, necesarios para cumplimentar las exigencias del tratamiento. Nuestro objetivo es estudiar las principales características psicológicas, familiares y de ajuste a la enfermedad de los niños y adolescentes diagnosticados de DM1, haciendo especial hincapié en los factores psicopatológicos asociados. La metodología empleada ha consistido en una búsqueda bibliográfica sistemática en las principales bases de datos científicas. Debido al impacto biopsicosocial que la DM1 suele suponer en la vida del niño y su familia, pudiendo comprometer la calidad de vida y bienestar emocional de ambos, se ha señalado la importancia de identificar el conjunto de factores psicológicos asociados con un buen ajuste a la DM1 infantojuvenil

Type 1 Diabetes Mellitus (T1DM) is a widespread chronic disease among children and adolescents. Diagnosis and evolution usually involves a significant burden on the patient, and their families must change various aspects of their lifestyle to fulfill the demands of treatment. This study aims to identify the main psychological, family, and adjustment to illness features of children and adolescents diagnosed with DM1 and, in particular to highlight the associated psychopathological factors. The methodology involved a systematic literature search in the main scientific databases. Due to the biopsychosocial impact of DM1 usually assumed in the life of the child and family, and how it may compromise the quality of life and emotional well-being of both, different studies have agreed on the importance of identifying the set of psychological factors involved in healthy adjustment to illness in the child and adolescent with DM1

[Type 1 Diabetes Mellitus: brief review of the main associated psychological factors]. / Diabetes mellitus tipo 1: breve revisión de los principales factores psicológicos asociados.

Type 1 Diabetes Mellitus (T1DM) is a widespread chronic disease among children and adolescents. Diagnosis and evolution usually involves a significant burden on the patient, and their families must change various aspects of their lifestyle to fulfill the demands of treatment. This study aims to identify the main psychological, family, and adjustment to illness features of children and adolescents diagnosed with DM1 and, in particular to highlight the associated psychopathological factors. The methodology involved a systematic literature search in the main scientific databases. Due to the biopsychosocial impact of DM1 usually assumed in the life of the child and family, and how it may compromise the quality of life and emotional well-being of both, different studies have agreed on the importance of identifying the set of psychological factors involved in healthy adjustment to illness in the child and adolescent with DM1.

Dimethyl sulfide biofiltration using immobilized Hyphomicrobium VS and Thiobacillus thioparus TK-m in sugarcane bagasse.

Sugarcane bagasse was used as a carrier material of microorganisms in two different biofilters used to remove dimethyl sulfide (DMS) from a gas stream. The first biofilter was inoculated with Hyphomicrobium VS and the second with Thiobacillus thioparus Tk-m. During the operation of the biofilters the empty bed residence time (EBRT) was varied from 90 to 180 seconds and the inlet concentration of DMS from 12 to 50 ppmv. The inlet load was varied in the range of 0.62 to 5.2 (g DMS/m3 h). The maximum elimination capacity (EC) of the biofilter inoculated with Hyphomicrobium VS was 5 g DMS/m3 h; however, for the biofilter inoculated with T. thioparus Tk-m the maximum EC was 3.9 g DMS/m3 h. For T. thioparus TK-m the maximum removal efficiency (RE) obtained was 85.1 +/- 5.2% at 12 ppmv DMS inlet concentration, inlet load of 0.62 g DMS/m3 h and 180 s EBRT. The highest removal efficiency for Hyphomicrobium VS was 97.6 + 4.8% at 12 ppmv DMS inlet concentration, load of 0.62 g DMS/m3 h and 180 s EBRT.

Premenstrual asthma and leukotriene variations in the menstrual cycle

Background: Several authors have reported an increase in leukotriene C4 in the premenstrual phase in women with severe premenstrual asthma, indicating that antileukotrienes could be used in treatment. Objective: To analyse the role of leukotrienes in premenstrual asthma. Methods: A questionnaire on respiratory symptoms and peak flow during one complete menstrual cycle was given to women of fertile age to define them as asthmatics who suffered from premenstrual asthma or not. Premenstrual asthma (PMA) was defined as a clinical or functional deterioration (major=20%) in the premenstrual phase compared with the preovulatory phase. Blood samples to measure leukotriene C4 were taken during the preovulatory and premenstrual phases. Results: Blood samples were taken in 62 asthmatic women, 34 of whom (54.3%) presented PMA criteria, all with a premenstrual deterioration of between 20 and 40%. There was no difference in leukotriene C4 levels between the preovulatory and premenstrual phases in the women who suffered from PMA (1.50ng/mL vs. 1.31ng/mL; p=0.32) and those who did not (1.40ng/mL vs. 1.29ng/mL; p=0.62). Neither were there any differences in leukotriene levels between women with or without PMA. The results were similar for each category of asthma severity. Conclusions: Our data show that leukotriene C4 does not appear to be involved in the pathogenesis of premenstrual asthma, or support the use of anti-leukotrienes in the specific treatment of premenstrual asthma, at least in women with a moderate premenstrual deterioration. No differences appeared in any of the categories of asthma severity(AU)

Premenstrual asthma and leukotriene variations in the menstrual cycle.

BACKGROUND: Several authors have reported an increase in leukotriene C4 in the premenstrual phase in women with severe premenstrual asthma, indicating that antileukotrienes could be used in treatment. OBJECTIVE: To analyse the role of leukotrienes in premenstrual asthma. METHODS: A questionnaire on respiratory symptoms and peak flow during one complete menstrual cycle was given to women of fertile age to define them as asthmatics who suffered from premenstrual asthma or not. Premenstrual asthma (PMA) was defined as a clinical or functional deterioration (≥20%) in the premenstrual phase compared with the preovulatory phase. Blood samples to measure leukotriene C4 were taken during the preovulatory and premenstrual phases. RESULTS: Blood samples were taken in 62 asthmatic women, 34 of whom (54.3%) presented PMA criteria, all with a premenstrual deterioration of between 20 and 40%. There was no difference in leukotriene C4 levels between the preovulatory and premenstrual phases in the women who suffered from PMA (1.50ng/mL vs. 1.31ng/mL; p=0.32) and those who did not (1.40ng/mL vs. 1.29ng/mL; p=0.62). Neither were there any differences in leukotriene levels between women with or without PMA. The results were similar for each category of asthma severity. CONCLUSIONS: Our data show that leukotriene C4 does not appear to be involved in the pathogenesis of premenstrual asthma, or support the use of anti-leukotrienes in the specific treatment of premenstrual asthma, at least in women with a moderate premenstrual deterioration. No differences appeared in any of the categories of asthma severity.

[Determination of brain natriuretic peptide in patients undergoing different haemodiafiltration techniques]. / Determinación del péptido natriurético cerebral en pacientes sometidos a diferentes técnicas de hemodiafiltración.

UNLABELLED: IB-type natriuretic peptide is a cardíac neurohormone secreted by the cardíac ventricules in response to ventricular dilatation so plasma BNP level correlate with left ventricular mass and dysfunction. Dialysis patients have much greater levels of BNP due to the volume overload and because of reduced renal clearance. The aim of this study was to mesure and compare the BNP levels in three groups of patients who received different hemodiafiltration techniques: Daily online hemodiafiltration (HDFOLd), on-line hemodiafiltration (HDFOL) and low convective volume hemodiafiltration (HDF). Fifteen patients were included, five in each group. Pre and postdialysis BNP leves were measured during 8 weeks. The measure was done at the beginning of the week (long period), and at the end (short period), in order to study if there were significative differences between techniques and periods. We found significative differences between predialysis BNP levels in the short period (BNPpreC) and the long period (BNPpre-L). We also found significative differences with the posdialysis BNP in both periods; BNPpre- L vs. BNPpos-L (1069+/-1031 vs. 612 +/- 540). After comparing the three techniques the study showed significative differences between BNPpreC in HDF and HDFOL compared with HDFOld. And also after dialysis between BNPpos-C in HDFOLd compared with the other techniques. CONCLUSION: Although previous papers have shown that BNP levels have limited potential for assessment of hydration in hemodialysis patients, in this study our data demonstrate that after dialysis BNP levels decline in a significative way in the long and short period and we have found that patients on daily hemodialysis show lower BNP levels, and maybe this could be explained because daily on-line haemodiafiltration patients had lower weight rise between dialysis sessions and also better haemodynamic tolerance.

Determinación del péptido natriurético cerebral en pacientes sometidos a diferentes técnicas de hemodiafiltración / No disponible

El péptido natriurético cerebral (BNP) es una hormona que se libera a la circulación en respuesta de dilatación ventricular. Sus niveles se correlacionan con la masa del ventrículo izquierdo y con la disfunción ventricular. Los pacientes en diálisis presentan valores elevados a consecuencia de la situación de expansión de volumen y la reducción de su aclaramiento. Objetivo: analizar los niveles de BNP en pacientes sometidos a diferentes técnicas de hemodiafiltración: on-line diaria (HDFOLd), on-line (HDFOL) y con bajo volumen convectivo (HDF). Se determinaron las concentraciones séricas pre y posdiálisis de 15 pacientes (cinco de cada grupo) durante ocho semanas. Se efectuaron dos determinaciones, una a principio de semana (período largo) y otra al final de semana (período corto), con el fin de determinar si existían diferencias significativas entre técnicas y entre períodos. Al comparar los valores globales de BNP prehemodiálisis entre el período corto (BNPpreC) y el largo (BNP pre-L), se objetivaron diferencias significativas. Igualmente, se apreciaron diferencias entre el BNPpos del período corto y del largo. Asimismo, entre el BNP preC vs. BNPpos-C y entre BNPpre-L vs. BNPpos-L. El estudio comparativo entre técnicas mostró diferencias significativas en el período corto entre el BNPpre-C y BNPpos-C de HDFOLd con respecto a las mismas determinaciones en HDF y HDFOL. Conclusión: aunque la determinación del BNP tiene un potencial limitado para la evaluación del estado de hidratación en los pacientes en hemodiálisis, en este trabajo hemos comprobado que tras la sesión de diálisis se produce un descenso significativo del BNP, tanto en el período corto como en el largo, y que de manera significativa los pacientes del grupo de diaria presentan concentraciones inferiores de BNP, lo que se explicaría por la menor ganancia de peso interdiálisis y la mejor tolerancia hemodinámica a la técnica (AU)

IB-type natriuretic peptide is a cardíac neurohormone secreted by the cardíac ventricules in response to ventricular dilatation soplasma BNP level correlate with left ventricular mass and dysfunction. Dialysis patients have much greater levels of BNP due to the volume overload and because of reduced renal clearance. The aim of this study was to mesure and compare the BNP levels in three groups of patients who received different hemodia filtration techniques: Daily on-line hemodiafiltration (HDFOLd),on-line hemodiafiltration (HDFOL) and low convective volume hemodiafiltration (HDF). Fifteen patients were included, five ineach group. Pre and postdialysis BNP leves were measured during 8 weeks. The measure was done at the beginning of the week (long period), and at the end (short period), in order to study if there were significative differences between techniques and periods. We found significative differences between predialysis BNP levels in the short period (BNPpreC) and the long period (BNPpre-L). We also found significative differences with the posdialysis BNP in both periods; BNPpre-L vs. BNPpos-L(1069±1031 vs. 612 ± 540). After comparing the three techniques the study showed significative differences between BNPpreC in HDF and HDFOL compared with HDFOld. And also after dialysis between BNPpos-C in HDFOLd compared with the other techniques. Conclusion: Although previous papers have shown thatBNP levels have limited potential for assessment of hydration in hemodialysis patients, in this study our data demonstrate thatafter dialysis BNP levels decline in a significative way in the long and short period and we have found that patients on daily hemodialysis show lower BNP levels, and maybe this could be explained because daily on-line haemodiafiltration patients had lower weight rise between dialysis sessions and also better haemodynamic tolerance (AU)

Repeated pancreatitis in peritoneal dialysis patient

No disponible

No disponible

Fracaso renal agudo recurrente y reversible en un paciente afecto de hematuria y púrpura de Schönlein-Henoch / No disponible

La purpura de Schönlein-Henoch es una vasculitis de pequeño vaso caracterizada por el depósito de inmunocomplejos, principalmente IgA y C3. Es un trastorno multisistémico que afecta predominantemente la piel, las articulaciones, el tracto gastro-intestinal y los riñones. A nivel renal la expresión clínica varía desde una microhematuria aislada transitoria, hasta el cuadro de nefropatía rápidamente progresiva. El fracaso renal agudo es raro y suele verse asociado a episodios de hematuria macroscópica. Estos episodios suelen cursar con daño y obstrucción tubular por cilindros eritrocitarios. En este caso clínico describimos un paciente que sufrió dos episodios de fracaso renal agudo reversibles precedidos por brotes de hematuria macroscópica y que precisaron hemodiálisis durante cuatro y seis meses respectivamente (AU)

Sumary Henoch- Schönelin purpura (HSP) is a small vessel vasculitis characterized by deposition of inmune complexes, mainlyIg A and C3. It is a multisystem disorder affecting predominantly the skin, joints, gastrointestinal tract and kidneys. Clinical expression of nephritis ranges from transient isolated microscopic hematuria to rapidly progressive nephropathy. Acute renal failure is rare and is associated with episodes of macroscopic hematuria. These episodes are frequently associated with tubular damage and tubular obstruction by erythrocyte casts. We describe a patient with two episodes of acute renal failure after the onset of gross hematuria. Both episodes were reversible after six and four months respectively on hemodialysis (AU)

[Oxidative stress analysis in patients on hemodiafiltration on-line]. / Análisis del estrés oxidativo en pacientes en hemodiafiltración en línea.

Patients with chronic renal disease have a very high mortality due to cardiovascular disease. However, the traditional risk factors are not the only one explanation. Nowadays, there are new risk factors becoming, and one of these is the oxidative stress. Besides today we know that when these patients receive haemodialysis are being exposed to an additional oxidative stress. The aim of this study was to measure and to compare the degree of oxidative stress in two groups of patients on different dialysis techniques: a) On-Line Haemodiafiltration three times / week (OL-HDF). b) Daily Om-Line haemodiafiltration ( six times / week ) ( dOL-HDF) We studied 9 patients with chronic renal disease stage 5 on hemodialysis. They all were men, with a medium age of 72,5 +/- 6 years. Five patients were on dOL-HDFand four on tOL-HDF. Glutathione (GSH) concentration of patients on dOL-HDF before dialysis was 742+/- 153 nmol/ml and post-dialysis de 878+/- 223. Blood GSSG concentration before and after dialysis was 34+/- 14 nmol/ml y 137+/- 74 nmol/ml (p< 0,03). GSSG/GSH ratio pre-dialysis was 58+/-10 and post-dialysis 169+/-65 ( p < 0,03). In OL-HDF group GSSG concentration and the ratio GSSG/GSH also increased in a significative way from 99+/-45 nmol/ml to 179+/-66 nmol/ml, and from 161+/- 99 to 337+/-143 ( p<0,05). We also found differences in pCR concentrations between both groups; 3+/-1,4 g/l in dOL-HDF and 8,75+/-5,8 g/l in HDF OL. (p< 0,05). We did not find differences between xatine-oxidase activity before and after hemodialysis and between groups. In conclusion, patient with terminal chronic renal disease on OL-HDF receive an additional load of oxidative stress, as the increase in GSSG/GSH ratio in both groups shows. However patients on dHDF-OL shows low ratios GSSG/GSH post-hemodialysis and low pCR concentrations, and maybe this could be explained because daily on line haemodiafiltration improves purification of inflammatory mediators. Clue words: Hemodialysis, oxidative stress, glutathione, gssg/gsh ratio, xantine oxidasa.

Análisis del estrés oxidativo en pacientes en hemodiafiltración en línea / Stress oxidative analysis in patients on hemodiafiltration on line

Los pacientes afectos de enfermedad renal crónica presentan una elevada morbimortalidad debido a enfermedades cardiovasculares. Sin embargo, la elevada presencia de estas enfermedades no puede explicarse únicamente por los factores de riesgo tradicionales. En la actualidad, se considera la existencia de factores de riesgo emergentes, entre los que se encuentra el estrés oxidativo. Además se sabe que cuando reciben tratamiento con hemodiálisis, se ven sometidos a un estrés oxidativo adicional. El objetivo de este trabajo ha sido analizar y comparar el grado de estrés oxidativo en dos grupos de pacientes urémicos dializados con diferentes técnicas dialíticas: a. Hemodiafiltración on-line 3 veces/semana (HDFOL). b. Hemodiafiltración on-line diaria 6 veces semana(HDFOLD). Se estudiaron 9 pacientes afectos de enfermedad renal crónica terminal (Estadio 5), todos ellos varones con una edad media de 72,5 ± 6 años. Cinco pacientes pertenecían al grupo de HDFOLD y cuatro al grupo de HDFOL tres veces por semana. Los pacientes del grupo de HDF-OLD presentaban las siguientes concentraciones de glutatión reducido (GSH) en sangre, pre-diálisis de 742 ± 153 nmol/ml y post-diálisis de 878 ± 223, sin detectarse diferencias significativas entre ambos. Las concentraciones pre y post-diálisis de glutatión oxidado (GSSG) en sangre eran de 34 ± 14 nmol/ml y 137 ± 74 nmol/ml respectivamente (p < 0,03). Los cocientes GSSG/GSH obtenidos fueron: pre-diálisis de 58 ± 10 y post-diálisis 169 ± 65, con diferencias entre ambos valores (p < 0,03). Los pacientes del grupo HDF-OL 3 veces/semana también presentaron un incremento significativo de la concentración de GSSG y del ratio GSSG/GSH tras la sesión de diálisis, de 99 ± 45 nmol/ml a 179 ± 66 nmol/ml y de 161 ± 99 y a 337 ± 143, respectivamente (p < 0,05). La mediana de los valores de proteína C reactiva eran de 4,12 g/l en el grupo HDFOLD y 7,7 g/l en grupo de HDFOL (p < 0,05). No encontramos diferencias estadisticas en la actividad de la xantina oxidasa entre grupos ni tras la sesión de hemodiálisis. En resumen, podemos concluir que los pacientes afectos de enfermedad renal crónica terminal que reciben tratamiento sustitutivo se encuentran sometidos a un estrés oxidativo adicional, como muestra el incremento en los ratios GSSG/GSH en ambos grupos. Sin embargo los pacientes en el grupo HDFOLD presentan cocientes GSSG/GSH post-hemodiálisis y valores de PCR inferiores, lo que sugiere que la hemodiálisis diaria podría mejorar la depuración de medidores inflamatorios

Patients with chronic renal disease have a very high mortality due to cardiovascular disease. However, the traditional risk factors are not the only one explanation. Nowadays, there are new risk factors becoming, and one of these is the oxidative stress. Besides today we know that when these patients receive haemodialysis are being exposed to an additional oxidative stress. The aim of this study was to mesure and to compare the degree of oxidative stress in two groups of patients on different dialysis techniques: a) On-Line Haemodiafiltration three times / week (OL-HDF). b) Daily Om-Line haemodiafiltration (six times/week) (dOL-HDF) We studied 9 patients with chronic renal disease stage 5 on hemodialysis. They all were men, with a medium age of 72,5 ± 6 years. Five patiens were on dOL-HDFand four on tOL-HDF. Glutathione (GSH) concentration of patients on dOL-HDF before dialysis was 742 ± 153 nmol/ml and postdialysis de 878 ± 223. Blood GSSG concentration before and after dialysis was 34 ± 14 nmol/ml y 137 ± 74 nmol/ml (p < 0,03). GSSG/GSH ratio pre-dialysis was 58 ± 10 and post-dialysis 169 ± 65 (p < 0,03). In OL-HDF group GSSG concentration and the ratio GSSG/GSH also increased in a significative way from 99 ± 45 nmol/ml to 179 ± 66 nmol/ml, and from 161 ± 99 to 337 ± 143 (p < 0,05).We also found differences in pCR concentrations between both groups; 3 ± 1,4 g/l in dOL-HDF and 8,75 ± 5,8 g/l in HDF OL (p < 0,05).We did not find differences between xatine-oxidase activity before and after hemodialysis and between groups. In conclusion, patient with terminal chronic renal disease on OL-HDF receive an additional load of oxidative stress, as the increase in GSSG/GSH ratio in both groups shows. However patients on dHDF-OL shows low ratios GSSG/GSH post-hemodialysis and low pCR concentrations, and maybe this could be explained because daily on line haemodiafiltration improves purification of inflammatory mediators. Clue words: Hemodialysis, oxidative stress, glutathione, gssg/gsh ratio, xantine oxidasa