Adipose tissue concentrations of non-persistent environmental phenols and local redox balance in adults from Southern Spain.

The aim was to evaluate the associations of environmental phenol and paraben concentrations with the oxidative microenvironment in adipose tissue. This study was conducted in a subsample (n = 144) of the GraMo cohort (Southern Spain). Concentrations of 9 phenols and 7 parabens, and levels of oxidative stress biomarkers were quantified in adipose tissue. Associations were estimated using multivariable linear regression analyses adjusted for potential confounders. Benzophenone-3 (BP-3) concentration was borderline associated with enhanced glutathione peroxidase (GPx) activity [exp(ß) = 1.20, p = 0.060] and decreased levels of reduced glutathione (GSH) [exp(ß) = 0.55, p = 0.070]. Concentrations of bisphenol A (BPA) and methylparaben (MeP) were associated to lower glutathione reductase (GRd) activity [exp(ß) = 0.83, exp(ß) = 0.72, respectively], and BPA was borderline associated to increased levels of oxidized glutathione (GSSG) [exp(ß) = 1.73, p-value = 0.062]. MeP was inversely associated to both hemeoxygenase-1 (HO-1) and superoxide dismustase (SOD) activity, as well as to the levels of thiobarbituric acid reactive substances (TBARS) [0.75 < exp(ß) < 0.79]. Our results suggest that some specific non-persistent pollutants may be associated with a disruption of the activity of relevant antioxidant enzymes, in addition to the depletion of the glutathione stock. They might act as a tissue-specific source of free radicals, contributing to the oxidative microenvironment in the adipose tissue.

Simultaneous determination of the UV-filters benzyl salicylate, phenyl salicylate, octyl salicylate, homosalate, 3-(4-methylbenzylidene) camphor and 3-benzylidene camphor in human placental tissue by LC-MS/MS. Assessment of their in vitro endocrine activity.

UV-filters are widely used in many personal care products and cosmetics. Recent studies indicate that some organic UV-filters can accumulate in biota and act as endocrine disruptors, but there are few studies on the occurrence and fate of these compounds in humans. In the present work, a new liquid chromatography-tandem mass spectrometry (LC-MS/MS) method to assess the presence of six UV-filters in current use (benzyl salicylate, phenyl salicylate, octyl salicylate, homosalate, 3-(4-methylbenzylidene) camphor, and 3-benzylidene camphor) in human placental tissue is proposed. The method involves the extraction of the analytes from the samples using ethyl acetate, followed by a clean-up step using centrifugation prior to their quantification by LC-MS/MS using an atmospheric pressure chemical ionization (APCI) interface. Bisphenol A-d16 was used as surrogate for the determination of benzyl salicylate, phenyl salicylate, octyl salicylate and homosalate in negative mode and benzophenone-d10, was used as surrogate for the determination of 3-(4-methylbenzylidene) camphor and 3-benzylidene camphor in positive mode. The found limits of detection ranged from 0.4 to 0.6ngg(-1) and the limits of quantification ranged from 1.3 to 2.0ngg(-1), while variability was under 13.7%. Recovery rates for spiked samples ranged from 97% to 104%. Moreover, the interactions of these compounds with the human estrogen receptor alpha (hERα) and androgen receptor (hAR), using two in vitro bioassays based on reporter gene expression and cell proliferation assessment, were also investigated. All tested compounds, except benzyl salicylate and octyl salicylate, showed estrogenic activity in the E-Screen bioassay whereas only homosalate and 3-(4-methylbenzylidene) camphor were potent hAR antagonists. Although free salicylate derivatives and free camphor derivatives were not detected in the human placenta samples analyzed, the observed estrogenic and anti-androgenic activities of some of these compounds support the analysis of their occurrence and their role as endocrine disrupters in humans.

Exposición humana a compuestos con actividad disruptora endocrina en la población española / Human Exposure to endocrine disrupting chemicals in the Spanish population

Introducción: En el concepto de disruptor endocrino se incluye un amplio grupo de compuestos químicos, con diversas estructuras moleculares, que comparten su capacidad de interferir sobre elsistema hormonal. Los disruptores endocrinos están presentes en útiles y elementos de uso cotidiano, desde plásticos, papel reciclado a plaguicidas y cosméticos. Numerosos estudios han demostrado efectos adversos sobre la salud humana derivados de la exposición a disruptores endocrinos, como alteraciones reproductivas y aumento de ciertos tipos de cáncer. Objetivo: Recopilar información acerca del grado de exposición de la población general española a disruptores endocrinos. Metodología: Revisión sistemática de todas las publicaciones científicas de los últimos 5 años acerca de exposición humana a disruptores endocrinos, en muestras de población general española. Discusión: De la revisión realizada se deduce que la población española está expuesta de forma frecuente a disruptores endocrinos, ya que se encuentran niveles detectables de estos compuestos en diferentes matrices biológicas de diversos grupos de población. La progresiva incorporación de nuevas sustancias en el mercado, así como la falta de estudios científicos que evalúen la incertidumbre entorno al efecto combinado de múltiples residuos, hacen que la exposición humana a estos compuestos continúe siendo un problema para la salud pública(AU)

Introduction: Endocrine disruptors are a wide group of chemicals, with diverse structures, capable of interfering with the endocrine system. These chemicals are present in several items, such as plastics, recycled paper, pesticides and cosmetics. Several studies have reported adverse health effects derived from the exposure to endocrine disruptors, e.g. reproductive disorders and higher rate of certain types of cancer. Objective: To gather information concerning the exposure of the Spanish general population to endocrine disruptors. Methodology: Systematic review of the publications indexed in the last 5 years concerning human exposure to endocrine disruptors in samples of general population from Spain. Discussion/Conclusions: From this review, we concluded that the Spanish population is frequently exposed to endocrine disruptors, due to the presence of detectable levels of these chemicals indifferent samples of population. The introduction of new substances in the market, as well as the lack of scientific studies that explore the combined effect of multiple chemicals, make the exposure aproblem for Public Health(AU)

[Kikuchi-Fujimoto's disease and the association with systemic lupus erythematosus]. / Enfermedad de Kikuchi-Fujimoto y su asociación a lupus eritematoso sistémico.

Kikuchi-Fujimoto's disease (KFD), Histiocytic Necrotizing lymphadenitis, is a rare self-limiting condition characterized by lymphadenopathy, fever and neutropenia. The aetiology of KFD is controversial, and its diagnosis is confirmed histologically. Although KFD has rarely been reported associated to Systemic lupus erythemotosus (SLE) should be ruled out given its different prognosis and management. We present the clinical, histological and evolution the two cases of patients with Kikuchi's disease; one case had evolution classic and the other case were associated with SLE.

Piomiositis fúngica en paciente diabético como manifestación de déficit de mieloperoxidasa / Fungal pyomyositis in a diabetic patient as manifestation of myeloperoxidase deficit

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Enfermedad de Kikuchi-Fujimoto y su asociación a lupus eritematoso sistémico / Kikuchi-Fujimoto's disease and its association with systemic lupus erytematosus

La enfermedad de Kikuchi-Fujimoto (EKF) o linfadenitis necrotizante histiocítica es una patología autolimitada que se caracteriza por linfadenopatías, fiebre y neutropenia entre otros síntomas. La etiología de la EKF es controvertida y será el estudio histológico el que proporcione el diagnóstico de confirmación. Aunque la EKF no es muy frecuente, se han publicado varios casos en los cuales se asocia a Lupus Eritematoso Sistémico (LES) lo cual se ha de tener presente, puesto que modifica tanto el pronostico como el manejo terapéutico de estos pacientes.Se presentan dos casos de enfermedad de Kikuchi: el primero de los casos presente una evolución clásica de la enfermedad, mientras que el segundo caso asoció un LES (AU)

[Splenoportal thrombosis: form of presentation of essential thrombocythemia]. / Trombosis esplenoportal: forma de presentación de trombocitemia esencial.

Splenoportal thrombosis may appear in subclinical way and it necessary te make a differential diagnosis with other pathologies-more common, like inflammatory of infection, processes conditions in which a decrease in portal-flow take place, space compromise or hypercoagulability conditions. Hear we present two cases with this pathology, and we make an extensive differential diagnosis, the final diagnosis was reached through a bone marrow aspirate, with the outcome of essential thrombocytosis.

[Pseudoexfoliative glaucoma]. / Glaucomul pseudoexfoliativ.

The pseudoexfoliative glaucoma was find in our study at approximately 10% of the patients. Both clinical evolution and treatment results were less good at the patients with pseudoexfoliative glaucoma.

Critical dose of digoxin for treating supraventricular tachycardias after heart surgery.

This study was conducted to ascertain if critical peak body stores of digoxin were needed to protect patients from the debilities that result from supraventricular tachycardias occurring after open heart operations. We gave digoxin peak body stores of 15 micrograms/kg of lean body weight to 100 consecutive patients after open heart operations. If supraventricular tachycardias persisted four hours, we increased peak body stores to 17 or 19 micrograms/kg. The operations included coronary artery bypass grafts, heart valve replacements, and congenital defect correction. After operation, 18 patients had atrial fibrillation or flutter. During supraventricular tachycardias, ventricular rates were 150 beats per minute or slower. In the 100 patients, the median hospital stay after operation was four days. No patient required rehospitalization. The patients who had supraventricular tachycardias stayed in the hospital no longer than the patients who were at all times in regular sinus rhythm. All patients who entered the hospital with regular sinus rhythm went home with regular sinus rhythm. The critical safe peak body stores of digoxin needed to prevent debilities resulting from supraventricular tachycardias after open heart operations were 15 to 19 micrograms/kg of lean body weight.