35 research outputs found

    The selective peroxisome proliferator-activated receptor alpha modulator (SPPARM) paradigm : conceptual framework and therapeutic potential: A consensus statement from the International Atherosclerosis Society (IAS) and the Residual Risk Reduction Initiative (R3i) Foundation

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    In the era of precision medicine, treatments that target specific modifiable characteristics of high-risk patients have the potential to lower further the residual risk of atherosclerotic cardiovascular events. Correction of atherogenic dyslipidemia, however, remains a major unmet clinical need. Elevated plasma triglycerides, with or without low levels of high-density lipoprotein cholesterol (HDL-C), offer a key modifiable component of this common dyslipidemia, especially in insulin resistant conditions such as type 2 diabetes mellitus. The development of selective peroxisome proliferator-activated receptor alpha modulators (SPPARM) offers an approach to address this treatment gap. This Joint Consensus Panel appraised evidence for the first SPPARM agonist and concluded that this agent represents a novel therapeutic class, distinct from fibrates, based on pharmacological activity, and, importantly, a safe hepatic and renal profile. The ongoing PROMINENT cardiovascular outcomes trial is testing in 10,000 patients with type 2 diabetes mellitus, elevated triglycerides, and low levels of HDL-C whether treatment with this SPPARM agonist safely reduces residual cardiovascular risk.Peer reviewe

    Accelerated surgery versus standard care in hip fracture (HIP ATTACK): an international, randomised, controlled trial

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    Autonomous cortisol secretion in patients with primary aldosteronism: prevalence and implications on cardiometabolic profile and on surgical outcomes

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    Purpose: The aim of this study was to evaluate the prevalence of autonomous cortisol secretion (ACS) in patients with primary aldosteronism (PA) and its implications on cardiometabolic and surgical outcomes. Methods: This is a retrospective multicenter study of PA patients who underwent 1 mg dexamethasone-suppression test (DST) during diagnostic workup in 21 Spanish tertiary hospitals. ACS was defined as a cortisol post-DST >1.8 μg/dL (confirmed ACS if >5 μg/dL and possible ACS if 1.8–5 μg/dL) in the absence of spe cific clinical features of hypercortisolism. The cardiometabolic profile was compared with a control group with ACS without PA (ACS group) matched for age and DST levels. Results: The prevalence of ACS in the global cohort of patients with PA (n = 176) was 29% (ACS–PA; n = 51). Ten patients had confirmed ACS and 41 possible ACS. The cardiometabolic profile of ACS–PA and PA-only patients was simil ar, except for older age and larger tumor size of the adrenal lesion in the ACS–PA group. When comparing the ACS–PA group (n = 51) and the ACS group (n = 78), the prevalence of hypertension (OR 7.7 (2.64–22.32)) and cardiovascular events (OR 5.0 (2.29–11.07)) was higher in ACS–PA patients than in ACS patients. The coexistence of ACS in patien ts with PA did not affect the surgical outcomes, the proportion of biochemical cure and clinical cure being similar between ACS–PA and PA-only groups. Conclusion: Co-secretion of cortisol and aldosterone affects almost one-thi rd of patients with PA. Its occurrence is more frequent in patients with larger tumors and advanced age. However, the cardiometabolic and surgical outcomes of patients with ACS–PA and PA-only are similar

    Planet Formation Imager (PFI): science vision and key requirements

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    The Planet Formation Imager (PFI) project aims to provide a strong scientific vision for ground-based optical astronomy beyond the upcoming generation of Extremely Large Telescopes. We make the case that a breakthrough in angular resolution imaging capabilities is required in order to unravel the processes involved in planet formation. PFI will be optimised to provide a complete census of the protoplanet population at all stellocentric radii and over the age range from 0.1 to ~100 Myr. Within this age period, planetary systems undergo dramatic changes and the final architecture of planetary systems is determined. Our goal is to study the planetary birth on the natural spatial scale where the material is assembled, which is the "Hill Sphere" of the forming planet, and to characterise the protoplanetary cores by measuring their masses and physical properties. Our science working group has investigated the observational characteristics of these young protoplanets as well as the migration mechanisms that might alter the system architecture. We simulated the imprints that the planets leave in the disk and study how PFI could revolutionise areas ranging from exoplanet to extragalactic science. In this contribution we outline the key science drivers of PFI and discuss the requirements that will guide the technology choices, the site selection, and potential science/technology tradeoffs.S.K. acknowledges support from an STFC Rutherford Fellowship (ST/J004030/1) and Philip Leverhulme Prize (PLP-2013-110). Part of this work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration

    Phytoplankton oceanographic characterization during El Niño 2004 event in the Northwest region of Baja California, Mexico

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    An oceanographic cruise in front of the Coast of Baja California was carried from the 9th to the 29th day of July in 2004, in 91 stations at 10 m depth. The aim of this study was to identify the variability of phytoplankton and its oceanographic characterization in the coast-ocean region during an anomalous year with El Niño characteristics. Results showed a taxonomic composition of 21 phytoplankton genera in an interval size called nano-microphytoplankton: Gymnodinium, Scrippsiella, Ceratium, Coscinodiscus, Oxytoxum, Gyrodinium, Protoperidinium, Nitzschia, Gonyaulax. On the other hand, spatial distribution of light absorption coefficient for phytoplankton (aph440) and chlorophyll-a (Chl-a) concentration showed high values in front of the San Quintin coast and south of Punta Eugenia, detecting a clear decrease towards the oceanic zone. In regard to the taxonomic composition of phytoplankton, a dominance of dinoflagellates in contrast to diatoms was observed, results coinciding with the basic characteristics of phytoplankton ecology during an El Niño event

    Crustal Structure across Southern Islas Marías (Nayarit, Mexico) from Wide-Angle Data (TSUJAL Project)

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    American Geophysical Union (AGU) Fall Meeting, 14-18 December 2015, San FranciscoThe Mexican Pacific Margin is an interesting geological and tectonic study region due to the subduction processes that involve Rivera plate, North American plates and Jalisco Block. This region has been recently studied by the TSUJAL geophysical experiment during 2014. The main goal of this project is to achieve a better knowledge about this active margin and the seismic and tsunamigenic potential structural sources. To carry out this objective a set of multibeam bathymetric, potential fields, high resolution seismic, MCS and WAS data were obtained. In the frame of this study, we present the most significant results of wide angle seismic profile RTSIM04 carried out across the southern region of Islas Marías perpendicular to the coast towards Tepic in Nayarit with 220 km of length and SW-NE orientated. This profile is made of by a network of 4 OBS and 30 land seismic stations, deployed specially for this project, which registered the air gun shots provided by RRS James Cook every 120 s. Data obtained after processing and interpretation characterize seismically the contact zone between Rivera and North American plates from 30 to 60 km of model distance. Moreover, a cortical thickening from 9 to 20 km is observed towards to the coast. In the upper mantle, P-wave velocities of 7.9-8.4 km/s up to maximum depth of 50 km have been determinedPeer Reviewe

    Imágenes sísmicas de la corteza a lo largo del perfil RTSIM06 - Proyecto TSUJAL

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    Resumen de la comuniciación presentanda en la Reunión Anual de la Unión Geofísica Mexicana, del 2 al 7 de Noviembre 2015, Puerto Vallarta, Jalisco, México.-- 1 pageEn el marco del proyecto TSUJAL >Caracterización del peligro sísmico ytsunamigénico asociado con la estructura cortical del contacto PlacaRivera-Bloque de Jalisco>, se realizó el perfil sísmico mar-tierra RTSIM06llevado a cabo entre febrero y marzo de 2014 por investigadores de laUniversidad Complutense de Madrid y la Universidad de Guadalajara-Sisvoc, en el que se obtuvieron datos de sísmica de reflexión multicanal,sísmica de gran ángulo, batimetría multihaz y campos potenciales. El perfilRTSIM06 tuvo una longitud total de 245 km comenzando al oeste de lasislas María Magdalena y María Cleofás hasta la localidad de Redención en l municipio de Santiago Ixcuintla (Nayarit).Al oeste de las Islas Marías, se fondearon 3 OBS separados de 12 - 16 kmy 30 estaciones sísmicas de corto periodo instaladas en tierra a intervalosde 2-4 km de componente vertical (TEXAN 125-A) y de tres componentes(TAURUS, GURALP y SPIDER). Estas estaciones registraron, en modocontinuo, los disparos de aire comprimido realizados desde el buque RRSJames Cook a lo largo de dicho perfil. El procesado, análisis e interpretación de los datos de sísmica de granángulo obtenidos a lo largo perfil RTSIM06, ha permitido generar unmodelo de velocidades de ondas P que aporta un mayor conocimiento dela estructura interna de la corteza en la zona norte de la Placa de Rivera yel Bloque de Jalisco, así como nueva información del comienzo de la zonade subducciónPeer Reviewe
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