Miranda M.,Rovira i Virgili University |
Miranda M.,CIBER ISCIII |
Escote X.,Rovira i Virgili University |
Escote X.,CIBER ISCIII |
And 9 more authors.
Journal of Clinical Endocrinology and Metabolism | Year: 2010
Context: AQP7 is considered to be the sole adipose glycerol channel, and its regulation is crucial for glycemia control. Objectives: In this work, we aimed to further characterize AQP7 in human adipose tissue in obesity and type 2 diabetes (T2D): 1) to assess AQP7 expression levels in paired abdominal adipose tissue depots (sc and visceral); 2) to relate it with gene expression of genes involved in lipid metabolism; and 3) to confirm that AQP7 is mainly expressed in the adipocytes. Design: We conducted a transversal study of gene expression in paired samples of sc adipose tissue (SAT) and visceral adipose tissue (VAT). Patients: Caucasian lean and obese subjects (n = 62, matched for age and gender) and T2D subjects (n = 11, matched for age, gender, and BMI with their control group) participated in the study. Main Outcome Measure: We measured AQP7 expression levels in paired SAT and VAT. Results: We have proved the presence of AQP7 mRNA and protein in the adipocyte rather than the stromovascular fraction of adipose tissue (P = 0.001) and in mature adipocytes when differentiated in vitro. Increased AQP7 mRNA expression levels in VAT from T2D obese subjects (P < 0.05) were found. AQP7 transcript levels ratio of SAT vs. VAT changed with the presence of obesity and T2D. Interestingly, there were positive associations between AQP7 and both lipogenic and lipolytic genes in a similar manner in both adipose depots. Conclusions: Taken together, these data suggest a subtle regulation between adipose depots of the sole adipose aquaporin, AQP7, which is unbalanced in obesity and T2D. Copyright © 2010 by The Endocrine Society. Source
Pastor A.,Human Pharmacology and Clinical Neurosciences Research Group |
Pastor A.,IMIM Hospital del Mar Medical Research Institute |
Farre M.,Human Pharmacology and Clinical Neurosciences Research Group |
Farre M.,IMIM Hospital del Mar Medical Research Institute |
And 7 more authors.
Journal of Lipid Research | Year: 2014
The analysis of peripheral endocannabinoids (ECs) is a good biomarker of the EC system. Their concentrations, from clinical studies, strongly depend on sample collection and time processing conditions taking place in clinical and laboratory settings. The analysis of 2-monoacylglycerols (MGs) (i.e., 2-arachidonoylglycerol or 2-oleoylglycerol) is a particularly challenging issue because of their ex vivo formation and chemical isomerization that occur after blood sample collection. We provide evidence that their ex vivo formation can be minimized by adding Orlistat, an enzymatic lipase inhibitor, to plasma. Taking into consideration the low cost of Orlistat, we recommend its addition to plasma collecting tubes while maintaining sample cold chain until storage. We have validated a method for the determination of the EC profile of a range of MGs and N-acylethanolamides in plasma that preserves the original isomer ratio of MGs. Nevertheless, the chemical isomerization of 2-MGs can only be avoided by an immediate processing and analysis of samples due to their instability during conservation. We believe that this new methodology can aid in the harmonization of the measurement of ECs and related compounds in clinical samples.-Pastor, A., M. Farré, M. Fitó, F. Fernandez- Aranda, and R. de la Torre. Analysis of ECs and related compounds in plasma: artifactual isomerization and ex vivo enzymatic generation of 2-MGs. J. Lipid Res. 2014. 55: 966-977. Copyright © 2014 by the American Society for Biochemistry and Molecular Biology, Inc. Source
de Leon-Casasola O.A.,Roswell Park Cancer Institute |
de Leon-Casasola O.A.,State University of New York at Buffalo |
Mayoral V.,University Hospital Of Bellvitge
Journal of Pain Research | Year: 2016
Topical 5% lidocaine medicated plasters represent a well-established first-line option for the treatment of peripheral localized neuropathic pain (LNP). This review provides an updated overview of the clinical evidence (randomized, controlled, and open-label clinical studies, real-life daily clinical practice, and case series). The 5% lidocaine medicated plaster effectively provides pain relief in postherpetic neuralgia, and data from a large open-label controlled study indicate that the 5% lidocaine medicated plaster is as effective as systemic pregabalin in postherpetic neuralgia and painful diabetic polyneuropathy but with an improved tolerability profile. Additionally, improved analgesia and fewer side effects were experienced by patients treated synchronously with the 5% lidocaine medicated plaster, further demonstrating the value of multimodal analgesia in LNP. The 5% lidocaine medicated plaster provides continued benefit after long-term (#7 years) use and is also effective in various other LNP conditions. Minor application-site reactions are the most common adverse events associated with the 5% lidocaine medicated plaster; there is minimal risk of systemic adverse events and drug–drug interactions. Although further well-controlled studies are warranted, the 5% lidocaine medicated plaster is efficacious and safe in LNP and may have particular clinical benefit in elderly and/or medically compromised patients because of the low incidence of adverse events. © 2016 de León-Casasola and Mayoral. Source
Dominguez M.,University Hospital Of Bellvitge |
De Oliveira E.,Proteomics Platform |
Odena M.A.,Proteomics Platform |
Portero M.,University of Lleida |
And 4 more authors.
Free Radical Biology and Medicine | Year: 2016
Protein lipoxidation was assessed in the parietal cortex (PC), frontal cortex (FC), and cingulate gyrus (CG) in middle-aged and old-aged individuals with no clinical manifestations of cognitive impairment, in order to increase understanding of regional brain vulnerability to oxidative damage during aging. Twenty-five lipoxidized proteins were identified in all the three regions although with regional specificities, by using redox proteomics to detect target proteins of neuroketals (NKT) adduction. The number of cases with NKT-adducted proteins was higher in old-aged individuals but most oxidized proteins were already present in middle-aged individuals. Differences in vulnerability to oxidation were dependent on the sub-cellular localization, secondary structure, and external exposition of certain amino acids. Lipoxidized proteins included those involved in energy metabolism, cytoskeleton, proteostasis, neurotransmission and O2/CO2, and heme metabolism. Total NKT and soluble oligomer levels were estimated employing slot-blot, and these were compared between age groups. Oligomers increased with age in PC and FC; NKT significantly increased with age in FC, whereas total NKT and oligomer levels were not modified in CG, thus highlighting differences in brain regional vulnerability with age. Oligomers significantly correlated with NKT levels in the three cortical regions, suggesting that protein NKT adduction parallels soluble oligomer formation. © 2016 Elsevier Inc. All rights reserved. Source
Javier Carmona F.,Cancer Epigenetics and Biology Program PEBC |
Azuara D.,Translational Research Laboratory |
Berenguer-Llergo A.,Catalan Institute of Oncology ICO IDIBELL |
Berenguer-Llergo A.,CIBER ISCIII |
And 21 more authors.
Cancer Prevention Research | Year: 2013
DNAmethylation biomarkers for noninvasive diagnosis of colorectal cancer (CRC) and precursor lesions have been extensively studied. Different panels have been reported attempting to improve current protocols in clinical practice, although no definite biomarkers have been established. In the present study, we have examined patient biopsies starting from a comprehensive analysis of DNA methylation differences between paired normal and tumor samples in known cancer-related genes aiming to select the best performing candidates informative for CRC diagnosis in stool samples. Five selected markers were considered for subsequent analyses in independent biologic cohorts and in silico data sets. Among the five selected genes, three of them (AGTR1, WNT2 and SLIT2) were validated in stool DNA of affected patients with a detection sensitivity of 78% [95% confidence interval (CI), 56%- 89%]. As a reference,DNAmethylation of VIM and SEPT9 was evaluated in a subset of stool samples yielding sensitivities of55%and 20%, respectively. Moreover, our panel may complement histologic and endoscopic diagnosis of inflammatory bowel disease (IBD)-associated neoplasia, as it was also efficient detecting aberrant DNA methylation in non-neoplastic tissue samples from affected patients. This novel panel of specific methylation markers can be useful for early diagnosis of CRC using stool DNA and may help in the follow-up of high-risk patients with IBD. Source