Publications by authors named "Juan Carlos Lopez-Fernandez"

Background: Endothelial progenitor cells (EPCs) are circulating angiogenic cells with endothelial features associated with risk for stroke. We aimed to delve into their functional characteristics. EPCs were isolated and cultured from Ischemic Stroke (IS) patients and predictors of their variance evaluated.

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Novel ultrasound (US) methods are required to assess qualitative changes in the quadriceps rectus femoris (QRF) muscle when evaluating mechanically ventilated, long-stay ICU patients with suspected neuromuscular acquired weakness (ICUAW). Our aim was to analyze novel US muscle assessment methods in these patients versus healthy controls by carrying out a prospective observational study. Shear wave elastography (SWE) showed, with a receiver operating characteristic (ROC) curve of 0.

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There is currently no standardized procedure to assess sarcopenia in long-stay catabolic patients. Our aim is to analyze a novel ultrasound muscle assessment protocol in these patients versus healthy controls, by carrying out a prospective observational study. We designed a new ultrasound protocol that assesses quadriceps rectus femoris (QRF) muscle quality in real-time B-mode, color-Doppler, and M-mode ultrasound, and evaluates QRF intramuscular central tendon thickness, cross-sectional area, and muscle thickness in ultrasound B-mode.

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Objective: Common variants of the Paraoxonase (PON), 5-Methyl-Tetrahydrofolate-Reductase (MTHFR) and Angiotensin-II receptor 1 (AT1R) genes have been associated with ischemic stroke (IS) risk. Moreover, carotid atherosclerosis is a common cause of IS. The aim of this study is to explore whether variants in these genes associate with the severity of ultrasonographic determined atherosclerosis assessed in carotid arteries.

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Purpose Of The Study: The present study aims to evaluate the relationship between rs662 (Gln(Q)192Arg(R)) and rs854560 (L55M) and the rs7493 (S311C) in the paraoxonase genes and ischemic stroke (IS) in the population of Gran Canaria (Canary Islands). The association with stroke was also evaluated using systematic review and meta-analysis.

Methods: A total of 129 IS patients and 176 age and gender matched controls were enrolled.

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Stroke is a disease with significant morbidity, mortality, and economic and social impacts. It is a complex entity whose pathogenesis involves multiple environmental and genetic factors, with the latter having a role in up to 50% of strokes. The objective of the review is to analyze the available methods for the genetic diagnosis including linkage studies of variation in copy number, gene - candidate approximations, or whole genome (GWAS) and polymorphisms associated with its pathogenesis.

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Introduction: The aim of this study was to analyze differences between patients aged 80 years or less and those aged more than 80 years old a hospital series of ischemic stroke.

Material And Methods: We performed a retrospective review of all patients with ischemic stroke or transient ischemic attack requiring admission to the Neurology Service of the Dr. Negrín University Hospital of Gran Canaria (Spain) between January 1, 2004 and December 31, 2006.

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