Vigilar les calories per poder mantenir el cervell jove

Els excessos a la taula també influeixen en els mecanismes que expliquen el desenvolupament de les malalties neurodegeneratives

Canvis neuropsicològics en el procés d’envelliment en les persones amb Síndrome de Down

La millora en la qualitat de vida ha afavorit considerablement l'augment de la longevitat de les persones amb discapacitat intel·lectual i amb síndrome de Down (SD) en particular i, per aquesta raó, és important descriure les característiques que presenta el seu procés d'envelliment. Per tant, és molt important aconseguir una major precisió en la detecció inicial dels canvis cognitius i emocionals, per tal de dur a terme una bona prevenció i/o intervenció ajustada a les necessitats de cada persona. És per tant, fonamental una bona prevenció i detecció de l’inici del deteriorament per així, millorar la intervenció en la seva qualitat de vida durant el procés d’envelliment. En aquest sentit i degut a què hi ha encara pocs estudis sobre el deteriorament cognitiu en l’envelliment de les persones amb SD, cal fomentar la realització d’estudis que permetin un millor coneixement del seu procés d’envelliment. Per aquest motiu, s’ha iniciat un estudi multicèntric amb diferents institucions que treballen amb persones amb SD, amb la finalitat de determinar si existeix un patró de deteriorament i l’evolució dels canvis cognitius i emocionals en el procés d’envelliment en les persones amb SD.

El Rol del cuidador en l'atenció a persones amb demència

El present article té com a objectiu analitzar el rol del cuidador no professional, sigui familiar o no, en l’atenció a persones amb demència, tant les seves característiques com els trets principals. Els estudis realitzats sobre el cuidador familiar són els més nombrosos i refereixen canvis tant a nivell psicològic, físic, social, familiar com econòmic, per tot el que comporta atendre una persona amb algun tipus de demència durant un llarg període de temps. Aquests canvis, conseqüència de l’atenció a una persona que pateix demència, porten habitualment al cuidador a patir sobrecàrrega, estrés i burnout, les quals tenen clares conseqüències en la seva pròpia salut i benestar. En els darrers anys han sorgit noves línies d’investigació que posen la mirada en els aspectes més positius del cuidar en el marc del desenvolupament de la Psicologia positiva. Els pocs estudis realitzats fins l’actualitat en contextos formals (residències, hospitals, entre d’altres) ens avancen que els cuidadors amb vinculació a la tasca o engagement pateixen menys estrés i burnout, donat que actua com amortidor d’aquests factors. Considerem que cal continuar investigant a partir d’aquests nous enfocaments, donat que probablement aportaran nous elements en la intervenció amb cuidadors, per tal de millorar el seu benestar i qualitat de vida.

Primary Sjogren syndrome.

Sjögren syndrome is a systemic autoimmune disease causing secretory gland dysfunction. This leads to dryness of the main mucosal surfaces such as the mouth, eyes, nose, pharynx, larynx, and vagina. 1 Sjögren syndrome may be a serious disease, with excess mortality caused by haematological cancer. 2 The cause of Sjögren syndrome is unknown, but factors postulated to play a role are both genetic and environmental .....

Group motivational intervention in overweight/obese patients in primary prevention of cardiovascular disease in the primary healthcare area

Background The global mortality caused by cardiovascular disease increases with weight. The Framingham study showed that obesity is a cardiovascular risk factor independent of other risks such as type 2 diabetes mellitus, dyslipidemia and smoking. Moreover, the main problem in the management of weight-loss is its maintenance, if it is achieved. We have designed a study to determine whether a group motivational intervention, together with current clinical practice, is more efficient than the latter alone in the treatment of overweight and obesity, for initial weight loss and essentially to achieve maintenance of the weight achieved; and, secondly, to know if this intervention is more effective for reducing cardiovascular risk factors associated with overweight and obesity. Methods This 26-month follow up multi-centre trial, will include 1200 overweight/obese patients. Random assignment of the intervention by Basic Health Areas (BHA): two geographically separate groups have been created, one of which receives group motivational intervention (group intervention), delivered by a nurse trained by an expert phsychologist, in 32 group sessions, 1 to 12 fortnightly, and 13 to 32, monthly, on top of their standard program of diet, exercise, and the other (control group), receiving the usual follow up, with regular visits every 3 months. Discussion By addressing currently unanswered questions regarding the maintenance in weight loss in obesity/overweight, upon the expected completion of participant follow-up in 2012, the IMOAP trial should document, for the first time, the benefits of a motivational intervention as a treatment tool of weight loss in a primary care setting.

Diagnosing Patients Combining Principal Components Analysis and Case Based Reasoning

This paper addresses the application of a PCA analysis on categorical data prior to diagnose a patients data set using a Case-Based Reasoning (CBR) system. The particularity is that the standard PCA techniques are designed to deal with numerical attributes, but our medical data set contains many categorical data and alternative methods as RS-PCA are required. Thus, we propose to hybridize RS-PCA (Regular Simplex PCA) and a simple CBR. Results show how the hybrid system produces similar results when diagnosing a medical data set, that the ones obtained when using the original attributes. These results are quite promising since they allow to diagnose with less computation effort and memory storage

An investigation of the resolution of inflammation (catabasis) in COPD.

Background: Chronic Obstructive Pulmonary Disease (COPD) is characterized by an enhanced inflammatory response to smoking that persists despite quitting. The resolution of inflammation (catabasis) is a complex and highly regulated process where tissue resident macrophages play a key role since they phagocytose apoptotic cells (efferocytosis), preventing their secondary necrosis and the spill-over of their pro-inflammatory cytoplasmic content, and release pro-resolution and tissue repair molecules, such as TGFβ, VEGF and HGF. Because inflammation does not resolve in COPD, we hypothesized that catabasis may be abnormal in these patients. Methods: To explore this hypothesis, we studied lung tissue samples obtained at surgery from 21 COPD patients,22 smokers with normal spirometry and 13 non-smokers controls. In these samples we used: (1)immunohistochemistry to assess the expression of CD44, CD36, VEGF and TGFβ in lung macrophages; (2) real time PCR to determine HGF, PPARγ, TGFβ, VEGF and MMP-9 gene expression; and, (3) ELISA to quantify lipoxin A4, a lipid mediator of catabasis. Results: We found that current and former smokers with COPD showed: (1) more inflammation (higher MMP-9 expression); (2) reduced macrophage surface expression of CD44, a key efferocytosis receptor; and, (3) similar levels of TGFβ, VEGF, HGF, PPARγ, and lipoxin A4 than smokers with normal spirometry, despite the presence of inflammation and disease. Conclusions: These results identify several potential abnormalities of catabasis in patients with COPD.

Comparison of the gut microbiota from soldier and worker castes of the termite Reticulitermes grassei

The bacterial microbiota from the whole gut of soldier and worker castes of the termite Reticulitermes grassei was isolated and studied. In addition, the 16S rDNA bacterial genes from gut DNA were PCR-amplified using Bacteria-selective primers, and the 16S rDNA amplicons subsequently cloned into Escherichia coli. Sequences of the cloned inserts were then used to determine closest relatives by comparison with published sequences and with sequences from our previous work. The clones were found to be affiliated with the phyla Spirochaetes, Proteobacteria, Firmicutes, Bacteroidetes, Actinobacteria, Synergistetes, Verrucomicrobia, and candidate phyla Termite Group 1 (TG1) and Termite Group 2 (TG2). No significant differences were observed with respect to the relative bacterial abundances between soldier and worker phylotypes. The phylotypes obtained in this study were compared with reported sequences from other termites, especially those of phylotypes related to Spirochaetes, Wolbachia (an Alphaproteobacteria), Actinobacteria, and TG1. Many of the clone phylotypes detected in soldiers grouped with those of workers. Moreover, clones CRgS91 (soldiers) and CRgW68 (workers), both affiliated with"Endomicrobia", were the same phylotype. Soldiers and workers also seemed to have similar relative protist abundances. Heterotrophic, poly-β-hydroxyalkanoate-accumulating bacteria were isolated from the gut of soldiers and shown to be affiliated with Actinobacteria and Gammaproteobacteria. We noted that Wolbachia was detected in soldiers but not in workers. Overall, the maintenance by soldiers and workers of comparable axial and radial redox gradients in the gut is consistent with the similarities in the prokaryotes and protists comprising their microbiota.

La Docència de l'avaluació psicològica des d'una perspectiva integradora i professionalitzadora

Es presenta un projecte de millora de la qualitat docent, iniciat durant el curs acadèmic 2009-2010, en el qual es desenvolupà un treball conjunt amb les assignatures de Psicodiagnòstic, Psicologia Clínica Infantil i Neuropsicologia per tal de dissenyar un mòdul adreçat als alumnes de tercer de Grau en Psicologia, posant en comú les aportacions més recents en l’àmbit de l’avaluació i el diagnòstic psicològic, amb la finalitat d’afavorir la formació clínica dels estudiants. La finalitat d’aquest projecte era l’elaboració d’una proposta de Pla Docent del mòdul d’Avaluació i Diagnòstic Psicològic II, integrant els resultats de la metodologia plantejada en els seminaris i en coherència amb el plantejament del mateix mòdul, que s’imparteix, prèviament, durant el primer quadrimestre, tot intentant establir connexions entre les tres matèries. L’objectiu final és oferir als estudiants un plantejament modular integrador que els permeti assolir les competències previstes en el pla d’estudis de l’Espai Europeu d’Educació Superior. Entre les propostes per a aquest mòdul es presenta el treball d’un cas interdisciplinari des de les franges de petit grup, com també un plantejament de les matèries de forma conjunta i coordinada. En aquest projecte també s’ha volgut tenir en compte la valoració dels mateixos estudiants, que han estat partícips del procés.

Targeting microglial KATP channels to treat neurodegenerative diseases: a mitochondrial issue

Neurodegeneration is a complex process involving different cell types and neurotransmitters. A common characteristic of neurodegenerative disorders is the occurrence of a neuroinflammatory reaction in which cellular processes involving glial cells, mainly microglia and astrocytes, are activated in response to neuronal death. Microglia do not constitute a unique cell population but rather present a range of phenotypes closely related to the evolution of neurodegeneration. In a dynamic equilibrium with the lesion microenvironment, microglia phenotypes cover from a proinflammatory activation state to a neurotrophic one directly involved in cell repair and extracellular matrix remodeling. At each moment, the microglial phenotype is likely to depend on the diversity of signals from the environment and of its response capacity. As a consequence, microglia present a high energy demand, for which the mitochondria activity determines the microglia participation in the neurodegenerative process. As such, modulation of microglia activity by controlling microglia mitochondrial activity constitutes an innovative approach to interfere in the neurodegenerative process. In this review, we discuss the mitochondrial KATP channel as a new target to control microglia activity, avoid its toxic phenotype, and facilitate a positive disease outcome.

Targeting microglial KATP channels to treat neurodegenerative diseases: a mitochondrial issue

Neurodegeneration is a complex process involving different cell types and neurotransmitters. A common characteristic of neurodegenerative disorders is the occurrence of a neuroinflammatory reaction in which cellular processes involving glial cells, mainly microglia and astrocytes, are activated in response to neuronal death. Microglia do not constitute a unique cell population but rather present a range of phenotypes closely related to the evolution of neurodegeneration. In a dynamic equilibrium with the lesion microenvironment, microglia phenotypes cover from a proinflammatory activation state to a neurotrophic one directly involved in cell repair and extracellular matrix remodeling. At each moment, the microglial phenotype is likely to depend on the diversity of signals from the environment and of its response capacity. As a consequence, microglia present a high energy demand, for which the mitochondria activity determines the microglia participation in the neurodegenerative process. As such, modulation of microglia activity by controlling microglia mitochondrial activity constitutes an innovative approach to interfere in the neurodegenerative process. In this review, we discuss the mitochondrial KATP channel as a new target to control microglia activity, avoid its toxic phenotype, and facilitate a positive disease outcome.

Metabolic alterations and increased liver mTOR expression precede the development of autoimmune disease in a murine model of lupus erythematosus

Although metabolic syndrome (MS) and systemic lupus erythematosus (SLE) are often associated, a common link has not been identified. Using the BWF1 mouse, which develops MS and SLE, we sought a molecular connection to explain the prevalence of these two diseases in the same individuals. We determined SLE- markers (plasma anti-ds-DNA antibodies, splenic regulatory T cells (Tregs) and cytokines, proteinuria and renal histology) and MS-markers (plasma glucose, non-esterified fatty acids, triglycerides, insulin and leptin, liver triglycerides, visceral adipose tissue, liver and adipose tissue expression of 86 insulin signaling-related genes) in 8-, 16-, 24-, and 36-week old BWF1 and control New-Zealand-White female mice. Up to week 16, BWF1 mice showed MS-markers (hyperleptinemia, hyperinsulinemia, fatty liver and visceral adipose tissue) that disappeared at week 36, when plasma anti-dsDNA antibodies, lupus nephritis and a pro-autoimmune cytokine profile were detected. BWF1 mice had hyperleptinemia and high splenic Tregs till week 16, thereby pointing to leptin resistance, as confirmed by the lack of increased liver P-Tyr-STAT-3. Hyperinsulinemia was associated with a down-regulation of insulin related-genes only in adipose tissue, whereas expression of liver mammalian target of rapamicyn (mTOR) was increased. Although leptin resistance presented early in BWF1 mice can slow-down the progression of autoimmunity, our results suggest that sustained insulin stimulation of organs, such as liver and probably kidneys, facilitates the over-expression and activity of mTOR and the development of SLE.

Effect of maternal clinical chorioamnionitis on neonatal morbidity in very-low birthweight infants: a case control study

Aims: To assess the relationship between maternal clinical chorioamnionitis and neonatal outcome in preterm very-low birthweight (VLBW) infants. Methods: An observational case-control study was conducted in the Neonatology Services of 12 acute-care teaching hospitals in Spain. Between January 2004 and December 2006, all consecutive VLBW (F1500 g) infants born to a mother with clinical chorioamnionitis were enrolled. Controls were infants without chorioamnionitis matched by gestational age who were born immediately after each index case. Results: There were 165 cases and 163 controls. A significantly higher percentage of cases than controls required intubation (53% vs. 35.8%), had normal intrauterine growth (98.1% vs. 84.7%), were born in a tertiary center (inborn) (95.1% vs. 89.1%), from single gestations (76.4% vs. 65.6%) and vaginal delivery (47.3% vs. 33.3%), showed a lowerApgar score at 5 min, and presented a higher rate of earlyonset sepsis (10.4% vs. 1.2%). Older maternal age (32.5 vs. 30.8 years), premature labor (67.3% vs. 25.8%), premature rupture of membranes (61.3% vs. 25.8%), and antibiotic treatment (88.5% vs. 52.3%) were significantly more frequent among cases than controls. Conclusions: After controlling by gestational age, maternal chorioamnionitis was associated with neonatal depression and early sepsis but not with other prematurity-related complications.

Plantilla d'observació i avaluació de competències (POAC) : millora de la qualitat docent en l'avaluació psicològica

Els autors, un grup de professorat que imparteix docència al 3r curs de la Llicenciatura en Psicologia, reflexionen sobre el procés d’ensenyament- aprenentatge i les competències a assolir pels estudiants dins el marc de l’Espai Europeu d’Educació Superior. Considerant la rellevància de l’avaluació psicològica i de l’entrevista com a eina fonamental per a dur-la a terme, es centren en l’objectivació, definició i operacionalització de les competències necessàries per desenvolupar un procés diagnòstic de qualitat en el nou pla d’estudis. S’exposen diferents experiències pilot de treball amb grups reduïts d’estudiants. La reflexió sobre la tasca docent genera la creació de la Plantilla d’Observació i Avaluació de Competències (POAC 33), i de la seva versió abreujada (la POAC 14). Es clou l’article constatant que ambdós instruments es mostren útils i pràctics tan per a l’ensenyament de les competències com per a la seva avaluació.