217 research outputs found
High Density Lipoproteins Inhibit Oxidative Stress-Induced Prostate Cancer Cell Proliferation
Recent evidence suggests that oxidative stress can play a role in the pathogenesis and the progression of prostate cancer (PCa). Reactive oxygen species (ROS) generation is higher in PCa cells compared to normal prostate epithelial cells and this increase is proportional to the aggressiveness of the phenotype. Since high density lipoproteins (HDL) are known to exert antioxidant activities, their ability to reduce ROS levels and the consequent impact on cell proliferation was tested in normal and PCa cell lines. HDL significantly reduced basal and H2O2-induced oxidative stress in normal, androgen receptor (AR)-positive and AR-null PCa cell lines. AR, scavenger receptor BI and ATP binding cassette G1 transporter were not involved. In addition, HDL completely blunted H2O2-induced increase of cell proliferation, through their capacity to prevent the H2O2-induced shift of cell cycle distribution from G0/G1 towards G2/M phase. Synthetic HDL, made of the two main components of plasma-derived HDL (apoA-I and phosphatidylcholine) and which are under clinical development as anti-atherosclerotic agents, retained the ability of HDL to inhibit ROS production in PCa cells. Collectively, HDL antioxidant activity limits cell proliferation induced by ROS in AR-positive and AR-null PCa cell lines, thus supporting a possible role of HDL against PCa progression
Prometeo: Project on Metacognition in Borderline Personality Disorder
Borderline Personality Disorder (BPD) is characterized by Metacognition/Mentalization deficits and Emotion Dysregulation (ED). BPD’s first-choice treatment is psychotherapy, but a comprehensive model has not yet been formulated, consequently also treatments result controversial.
Study 1:
Aims: to examine the relationships between Metacognitive Functions and ED and other clinical features in a BPD sample.
Methods: Seventy patients were assessed for the inclusion and 45 BPD patients were included. Metacognitive functions were evaluated with Metacognition Assessment Interview (MAI). Specific self-reports measured respectively: ED (Difficulties in Emotion Regulation Scale, DERS), Alexithymia (Toronto Alexithymia Scale, TAS), Impulsiveness (Barratt Impulsiveness Scale, BIS), Mood (Beck Depression Inventory; BDI), Interpersonal Sensitivity (Inventory of Interpersonal Problems, IIP) and general psychopathology (Global Severity Index (GSI) of SCL-90).
A Structural Equation Model (SEM) was used to evaluate the relations between variables.
Results: SEM showed that TAS score resulted a mediator between MAI total score and DERS score and DERS significantly predicted BIS, BDI, IIP and GSI scores.
Conclusions: The general level of psychopathology and the other clinical variables seemed directly linked to ED. ED didn’t seem to correlate directly to Metacognition, but indirectly through Alexithymia.
Study 2:
Aims: to compare the effect of 1-year Metacognitive Interpersonal Therapy (MIT) and Mentalization Based Therapy (MBT) vs TAU (Treatment as usual) on Metacognition functions, ED and other clinical features in a BPD sample.
Methods: Forty-five patients were divided in 3 groups: MIT (N=14), MBT (N=16) and TAU (N=15). MAI scores were the primary outcome, DERS, TAS, BIS, BDI, IIP and GSI of SCL-90 scores were the secondary outcomes.
Linear Mixed model were used for the longitudinal evaluation of the results.
Results: MAI total score improve in both experimental groups. Secondary outcomes improved, but the effect wasn’t statistically significant.
Conclusions: Differentiation and Integration played a central role both in MIT and MBT
Trayectorias escolares de los y las estudiantes con discapacidad de la EPJA : experiencia en el CENS 3-415
Objetivo de propuesta: Reflexionar sobre las condiciones necesarias para
garantizar el derecho a la educaciĂłn de las/los diversos sujetos de la modalidad de
jĂłvenes y adultos.
Destinatarios: Estudiantes con discapacidad de la EPJA.Fil: Flores Magni, Melisa.
Mendoza (Argentina). CENS 3-415 Jorge PaschcuanFil: Ortubia, MarĂa Laura.
Mendoza (Argentina). CENS 3-415 Jorge Paschcua
Mitigation of and adaptation to UHI phenomena : the Padua case study
Elaborating solutions to counteract UHI effects can represents a relevant challenge for spatial planning and urban design. A specific experimentation has been developed on the city of Padua, analysing different scenarios of urban warming and using specific monitoring tools (Lidar/aerial survey) to define a DIM (Digital Surface Models) providing local situation in terms of green quality and extension, solar incidence/radiation, sky view factors, building materials. This chapter reconstruct the methodology followed during the survey and the elaboration of specific solutions to counteract UHI accordingly different scenarios
Report of 4 Cases and Review of the Literature
We reviewed the clinical, microbiologic, and outcome characteristics of 72 patients with human immunodeficiency virus (HIV)-associated histoplasmosis (4 newly described) reported in Europe over 20 years (1984-2004). Seven cases (9.7%) were acquired in Europe (autochthonous), whereas the majority involved a history of travel or arrival from endemic areas. The diagnosis of progressive disseminated histoplasmosis (PDH) was made during life in 63 patients (87.5%) and was the acquired immunodeficiency syndrome (AIDS)-presenting illness in 44 (61.1%). Disease was widespread in 66 patients (91.7%) and localized in 6 (8.3%), with the skin being the most frequent site of localized infection. Overall skin involvement was reported in 47.2% of the patients regardless of whether histoplasmosis was acquired in Africa or South America. Reticulonodular or diffuse interstial infiltrates occurred in 52.8%. The diagnosis was made during life by histopathology plus culture in 44 patients (69.8%), histopathology alone in 18 (28.5%), and culture alone in 1 (1.5%). During the induction phase amphotericin B and itraconazole (74.6%) were the single most frequently used drugs. Both drugs were also used either in combination (10.2%) or in sequential therapy (11.8%). Cumulative mortality rate during the induction phase of treatment was 15.2%. Overall, 37 patients died (57.8%); death occurred early in the course in 18 (28.1%). Seven of 40 patients (17.5%) who responded to therapy subsequently relapsed. Autopsy data in 13 patients confirmed the widespread disseminated nature of histoplasmosis (85%) among AIDS patients with a median of 4.5 organs involved. The results of the present report highlight the need to consider the diagnosis of PDH among patients with AIDS in Europe presenting with a febrile illness who have traveled to or who originated from an endemic area
Dose equivalents of antidepressants: Evidence-based recommendations from randomized controlled trials
Dose equivalence of antidepressants is critically important for clinical practice and for research. There are several methods to define and calculate dose equivalence but for antidepressants, only daily defined dose and consensus methods have been applied to date. The purpose of the present study is to examine dose equivalence of antidepressants by a less arbitrary and more systematic method
Earthquake-like dynamics in ultrathin magnetic film
We study the motion of a domain wall on an ultrathin magnetic film using the
magneto-optical Kerr effect (MOKE). At tiny magnetic fields, the wall creeps
only via thermal activation over the pinning centers present in the sample. Our
results show that this creep dynamics is highly intermittent and correlated. A
localized instability triggers a cascade, akin to aftershocks following a large
earthquake, where the pinned wall undergoes large reorganizations in a compact
active region for a few seconds. Surprisingly, the size and shape of these
reorganizations display the same scale-free statistics of the depinning
avalanches in agreement with the quenched Kardar-Parisi-Zhang universality
class.Comment: 5 pages, 4 figure
Nutraceutical approach for the management of cardiovascular risk \u2013 a combination containing the probiotic Bifidobacterium longum BB536 and red yeast rice extract: results from a randomized, double-blind, placebo-controlled study
BACKGROUND:
Probiotics incorporated into dairy products have been shown to reduce total (TC) and LDL cholesterolemia (LDL-C) in subjects with moderate hypercholesterolemia. More specifically, probiotics with high biliary salt hydrolase activity, e.g. Bifidobacterium longum BB536, may decrease TC and LDL-C by lowering intestinal cholesterol reabsorption and, combined with other nutraceuticals, may be useful to manage hypercholesterolemia in subjects with low cardiovascular (CV) risk. This study was conducted to evaluate the efficacy and safety of a nutraceutical combination containing Bifidobacterium longum BB536, red yeast rice (RYR) extract (10\u2009mg/day monacolin K), niacin, coenzyme Q10 (Lactoflorene Colesterolo\uae). The end-points were changes of lipid CV risk markers (LDL-C, TC, non-HDL-cholesterol (HDL-C), triglycerides (TG), apolipoprotein B (ApoB), HDL-C, apolipoprotein AI (ApoAI), lipoprotein(a) (Lp(a), proprotein convertase subtilisin/kexin type 9 (PCSK9)), and of markers of cholesterol synthesis/absorption.
METHODS:
A 12-week randomized, parallel, double-blind, placebo-controlled study. Thirty-three subjects (18-70\u2009years) in primary CV prevention and low CV risk (SCORE: 0-1% in 24 and 2-4% in 9 subjects; LDL-C: 130-200\u2009mg/dL) were randomly allocated to either nutraceutical (N\u2009=\u200916) or placebo (N\u2009=\u200917).
RESULTS:
Twelve-week treatment with the nutraceutical combination, compared to placebo, significantly reduced TC (-\u200916.7%), LDL-C (-\u200925.7%), non-HDL-C (-\u200924%) (all p\u2009<\u20090.0001), apoB (-\u200917%, p\u2009=\u20090.003). TG, HDL-C, apoAI, Lp(a), PCSK9 were unchanged. Lathosterol:TC ratio was significantly reduced by the nutraceutical combination, while campesterol:TC ratio and sitosterol:TC ratio did not change, suggesting reduction of synthesis without increased absorption of cholesterol. No adverse effects and a 97% compliance were observed.
CONCLUSIONS:
A 12-week treatment with a nutraceutical combination containing the probiotic Bifidobacterium longum BB536 and RYR extract significantly improved the atherogenic lipid profile and was well tolerated by low CV risk subjects.
TRIAL REGISTRATION:
NCT02689934
An interdisciplinary mixed-methods approach to developing antimicrobial stewardship interventions:Protocol for the preserving antibiotics through safe stewardship (PASS) research programme [version 1; peer review: 2 approved]
Behaviour change is key to combating antimicrobial resistance. Antimicrobial stewardship (AMS) programmes promote and monitor judicious antibiotic use, but there is little consideration of behavioural and social influences when designing interventions. We outline a programme of research which aims to co-design AMS interventions across healthcare settings, by integrating data-science, evidence- synthesis, behavioural-science and user-centred design. The project includes three work-packages (WP): WP1 (Identifying patterns of prescribing): analysis of electronic health-records to identify prescribing patterns in care-homes, primary-care, and secondary-care. An online survey will investigate consulting/antibiotic-seeking behaviours in members of the public. WP2 (Barriers and enablers to prescribing in practice): Semi-structured interviews and observations of practice to identify barriers/enablers to prescribing, influences on antibiotic-seeking behaviour and the social/contextual factors underpinning prescribing. Systematic reviews of AMS interventions to identify the components of existing interventions associated with effectiveness. Design workshops to identify constraints influencing the form of the intervention. Interviews conducted with healthcare-professionals in community pharmacies, care-homes, primary-, and secondary-care and with members of the public. Topic guides and analysis based on the Theoretical Domains Framework. Observations conducted in care-homes, primary and secondary-care with analysis drawing on grounded theory. Systematic reviews of interventions in each setting will be conducted, and interventions described using the Behaviour Change Technique taxonomy v1. Design workshops in care-homes, primary-, and secondary care. WP3 (Co-production of interventions and dissemination). Findings will be integrated to identify opportunities for interventions, and assess whether existing interventions target influences on antibiotic use. Stakeholder panels will be assembled to co-design and refine interventions in each setting, applying the Affordability, Practicability, Effectiveness, Acceptability, Side-effects and Equity (APEASE) criteria to prioritise candidate interventions. Outputs will inform development of new AMS interventions and/or optimisation of existing interventions. We will also develop web-resources for stakeholders providing analyses of antibiotic prescribing patterns, prescribing behaviours, and evidence reviews
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