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Navascués A, Rodríguez I, Repáraz J, Salvo S, Gil-Setas A, Martínez Peñuela JM. [Imported histoplasmosis in Navarra: presentation of four cases]. Rev Iberoam Micol 2011; 28:194-7. [PMID: 21539930 DOI: 10.1016/j.riam.2011.03.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Revised: 03/04/2011] [Accepted: 03/15/2011] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE Histoplasmosis is a fungal infection caused by the dimorphic fungi Histoplasma capsulatum. Its incidence in Spain has increased in recent years, mainly due to the increased presence of immigrants from Latin America and increased travel to the continent for tourism and cooperation. Our aim was to review the clinical characteristics of cases of histoplasmosis diagnosed in our hospital during the last six years. CASE REPORTS We diagnosed 4 cases from 4 patients from South America, 3 of whom were HIV positive and 1 diagnosed with dermatomyositis was treated with immunosuppressive drugs. The laboratory diagnosis was carried out by histological and microbiological study, by culture and specific PCR directly on the sample. DISCUSSION As it is an imported infection there needs to be a high level of suspicion and a detailed history taken to get a diagnosis. This infection requires a differential diagnosis between febrile syndrome in immunosuppressed patients, both HIV positive and immunosuppressive therapy, which originate from endemic areas, or who have a history of staying in them.
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López-Siguero JP, López-Canti LF, Espino R, Caro E, Fernández-García JM, Gutiérrez-Macías A, Rial JM, Lechuga JL, Macías F, Martínez-Aedo MJ, Rico S, Rodríguez I, Guillén J, Arroyo FJ, Bernal S, Espigares R, Núñez M, Escribano A, Barrionuevo JL, Gentil J, Barrios V, Fernández-Nistal A, Martos-Moreno GA, Martínez V, Argente J. Effect of recombinant growth hormone on leptin, adiponectin, resistin, interleukin-6, tumor necrosis factor-α and ghrelin levels in growth hormone-deficient children. J Endocrinol Invest 2011; 34:300-6. [PMID: 20634639 DOI: 10.1007/bf03347090] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Treatment with GH promotes linear growth and decreases body fat in patients with isolated GH deficiency (GHD). However, few studies have analyzed how GH replacement modifies ghrelin levels and the adipokine profile and the relationship of these modifications with the metabolic changes. AIMS To analyze the eventual differences between serum levels of leptin, leptin soluble receptor (sOBR), resistin, adiponectin, interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), total (TG) and acylated ghrelin (AG) and lipid and glycemic profiles in children with GHD, as well as to determine the effect of GH replacement on these parameters during the first year of therapy. SUBJECTS AND METHODS Thirty pre-pubertal (Tanner stage I) GHD children and 30 matched controls were enrolled. Children with GHD were studied before and after 6 and 12 months of GH treatment. Weight, height, BMI, fasting glucose, insulin, lipid profile and serum levels of adipokines and ghrelin were studied at every visit. Adi - pokines, insulin and ghrelin levels were determined by using commercial radio- and enzymoimmunoassays. RESULTS At baseline children with GHD had significantly higher sOBR (p<0.01) and adiponectin (p<0.01) levels than controls. Treatment with GH resulted in a decline in leptin (p<0.05) and TG (p<0.001) levels, an increase of homeostasis model assessment index and restored IGF-I levels (p<0.001). CONCLUSIONS These data indicate that GH replacement has a negative effect on leptin levels and may also produce a slight unfavorable effect on carbohydrate metabolism. In addition, the changes observed in the adipokine profile appear to be independent of body mass index.
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Fontana AR, Rodríguez I, Ramil M, Altamirano JC, Cela R. Solid-phase extraction followed by liquid chromatography quadrupole time-of-flight tandem mass spectrometry for the selective determination of fungicides in wine samples. J Chromatogr A 2011; 1218:2165-75. [PMID: 21382623 DOI: 10.1016/j.chroma.2011.02.025] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Revised: 02/09/2011] [Accepted: 02/10/2011] [Indexed: 11/15/2022]
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Metzger WG, Vivas-Martínez S, Giron A, Vaccari E, Campos E, Rodríguez I, Miranda E, Terán E, Olivo L, Magris M. Assessment of routine malaria diagnosis in the Venezuelan Amazon. Trans R Soc Trop Med Hyg 2011; 105:262-8. [PMID: 21376357 DOI: 10.1016/j.trstmh.2011.01.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2010] [Revised: 01/13/2011] [Accepted: 01/13/2011] [Indexed: 11/27/2022] Open
Abstract
The quality of routine malaria diagnosis is a crucial topic of malaria control. The aim of this assessment was to monitor and evaluate the quality of routine malaria diagnosis in Amazonas (Venezuela) and to improve the quality control system. The traditional non-blinded quality control system was found to be overburdened with diagnostic samples. A modified sampling system with fewer samples to be tested was proposed. Expert microscopists blindly double-checked 1000 slides and 550 rapid diagnostic tests (RDT) (OptiMAL-IT) from health posts (HP). For Plasmodium vivax, HP microscopy and OptiMAL-IT showed sensitivies of 86% and 63%, respectively. For P. falciparum, HP microscopy and OptiMAL-IT showed sensitivities of 68% and 89%, respectively. Both methods lost accuracy when fewer parasites occurred in the sample. HP microscopists from different municipalities displayed significant differences in diagnostic quality. Overall, quality of routine malaria diagnosis in the Venezuelan Amazon is good but not optimal. The change from the traditional non-blinded quality control system to blinded cross-checking of a minimal selection of samples is - comparatively - a low cost intervention with possibly high impact on the quality of routine malaria diagnosis. The introduction of RDTs should be discussed carefully in order not to displace an existing network of HP microscopists.
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Negreira N, Rodríguez I, Rubí E, Cela R. Silicone discs as disposable enrichment probes for gas chromatography-mass spectrometry determination of UV filters in water samples. Anal Bioanal Chem 2011; 400:603-11. [DOI: 10.1007/s00216-011-4763-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Revised: 02/01/2011] [Accepted: 02/02/2011] [Indexed: 10/18/2022]
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131
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Negreira N, Rodríguez I, Rubí E, Cela R. Optimization of pressurized liquid extraction and purification conditions for gas chromatography–mass spectrometry determination of UV filters in sludge. J Chromatogr A 2011; 1218:211-7. [DOI: 10.1016/j.chroma.2010.11.028] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Revised: 11/10/2010] [Accepted: 11/12/2010] [Indexed: 11/29/2022]
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Cusidó M, Fargas F, Rodríguez I, Alsina A, Baulies S, Tresserra F, Pascual Martínez A, Ibiza JF, Xaudaró RF. Role of lymphadenectomy in endometrioid endometrial cancer. EUR J GYNAECOL ONCOL 2011; 32:49-53. [PMID: 21446325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
OBJECTIVE To assess the risk factors associated with node involvement. STUDY DESIGN In the period 1990-2008 a total of 265 endometrial cancers were treated in the Institut Universitari Dexeus. We analysed the rate of myometrial invasion, tumour grade, histological type and node involvement. RESULTS Overall, 86% of tumours were endometrioid, 5.3% papillary serous, 4.9% mixed and 2.6% endometrial stroma sarcoma. Among those with endometrioid histology, lymphadenectomy was not performed (NL) in 85 cases (37.2%), whereas pelvic lymphadenectomy (PL) or pelvic and aortic lymphadenectomy (PAL) was carried out in 84 (36.84%) and 59 patients (25.87%), respectively. In NL patients the overall disease-free survival (DFS) rate at five years was 92.8%. In the PL group, node involvement was observed in 2.4% of cases and the five-year DFS rate was 92.3%. Among PAL patients, 18.6% showed node involvement (72.7% positive pelvic nodes and 63.6% aortic). Aortic involvement was present in 5.9% of cases when there was no pelvic disease, whereas in the presence of positive pelvic nodes the rate of aortic involvement was 50%. The DFS rate at five years was 93.6%. Referring to the risk factors, when infiltration was > 50% of the myometrium, lymph node involvement occurred in 37% of cases and G3 tumors in 45.5%. CONCLUSIONS Node involvement is more commonly observed in cases with > 50% myometrial invasion and G3, accounting for 25% of cases that can be considered as at-risk patients. When node involvement is present it is equally distributed between the pelvic and aortic levels. As node involvement is a predictive factor for distant metastasis, the 25% of patients considered to be at risk should undergo pelvic and aortic lymphadenectomy
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Carpinteiro I, Ramil M, Rodríguez I, Cela R. Determination of fungicides in wine by mixed-mode solid phase extraction and liquid chromatography coupled to tandem mass spectrometry. J Chromatogr A 2010; 1217:7484-92. [DOI: 10.1016/j.chroma.2010.09.080] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 09/27/2010] [Accepted: 09/28/2010] [Indexed: 11/16/2022]
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134
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Rodríguez I, Guerra B, Mendoza MC, Rodicio MR. pUO-SeVR1 is an emergent virulence–resistance complex plasmid of Salmonella enterica serovar Enteritidis. J Antimicrob Chemother 2010; 66:218-20. [DOI: 10.1093/jac/dkq386] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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135
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Ros M, Rodríguez I, García C, Hernández T. Microbial communities involved in the bioremediation of an aged recalcitrant hydrocarbon polluted soil by using organic amendments. BIORESOURCE TECHNOLOGY 2010; 101:6916-23. [PMID: 20413304 DOI: 10.1016/j.biortech.2010.03.126] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Revised: 03/22/2010] [Accepted: 03/29/2010] [Indexed: 05/21/2023]
Abstract
An 8-month field bioremediation experiment using fresh (FS) and composted (CS) sewage sludge and unamended soil (US) was carried out on an aged hydrocarbon contaminated semi-arid soil. FS treatments led to the highest percentage of hydrocarbon degradation (46%) and the highest bacterial and fungal population. Denaturing gradient gel electrophoresis analysis demonstrated differences in bacterial and fungal community structure of treated compared to uncontaminated soil (control). Time of sampling accounted for most of the differences than type of treatment. The principal phyla observed in bioremediation treatments were Actinobacteria and Ascomycota. Results pointed to the addition of organic amendments, particularly sewage sludge, as an useful strategy for improving the effectiveness of landfarming biodegradation processes in hydrocarbon polluted soils.
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González-Mariño I, Rodríguez I, Quintana JB, Cela R. Matrix solid-phase dispersion followed by gas chromatography-mass spectrometry for the determination of triclosan and methyl triclosan in sludge and sediments. Anal Bioanal Chem 2010; 398:2289-97. [DOI: 10.1007/s00216-010-4136-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2010] [Revised: 08/16/2010] [Accepted: 08/16/2010] [Indexed: 10/19/2022]
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137
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Negreira N, Rodríguez I, Rubí E, Cela R. Dispersive liquid–liquid microextraction followed by gas chromatography–mass spectrometry for the rapid and sensitive determination of UV filters in environmental water samples. Anal Bioanal Chem 2010; 398:995-1004. [DOI: 10.1007/s00216-010-4009-9] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 06/30/2010] [Accepted: 07/05/2010] [Indexed: 11/29/2022]
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138
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Montes R, García-López M, Rodríguez I, Cela R. Mixed-mode solid-phase extraction followed by acetylation and gas chromatography mass spectrometry for the reliable determination of trans-resveratrol in wine samples. Anal Chim Acta 2010; 673:47-53. [DOI: 10.1016/j.aca.2010.05.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Revised: 04/24/2010] [Accepted: 05/15/2010] [Indexed: 10/19/2022]
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139
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Carpinteiro I, Abuín B, Rodríguez I, Ramil M, Cela R. Pressurized solvent extraction followed by gas chromatography tandem mass spectrometry for the determination of benzotriazole light stabilizers in indoor dust. J Chromatogr A 2010; 1217:3729-35. [DOI: 10.1016/j.chroma.2010.04.022] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Revised: 04/06/2010] [Accepted: 04/09/2010] [Indexed: 10/19/2022]
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140
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García-López M, Rodríguez I, Cela R. Mixed-mode solid-phase extraction followed by liquid chromatography–tandem mass spectrometry for the determination of tri- and di-substituted organophosphorus species in water samples. J Chromatogr A 2010; 1217:1476-84. [DOI: 10.1016/j.chroma.2009.12.067] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2009] [Revised: 12/15/2009] [Accepted: 12/23/2009] [Indexed: 10/20/2022]
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141
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Martínez N, Rodríguez I, Rodicio R, Mendoza MDC, Rodicio MDR. Molecular Basis and Evolution of Multiple Drug Resistance in the Foodborne PathogenSalmonella entericaSerovar Ohio. Foodborne Pathog Dis 2010; 7:189-98. [DOI: 10.1089/fpd.2009.0377] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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142
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Montes R, Rodríguez I, Cela R. Solid-phase microextraction with simultaneous oxidative sample treatment for the sensitive determination of tetra- to hexa-brominated diphenyl ethers in sediments. J Chromatogr A 2010; 1217:14-21. [DOI: 10.1016/j.chroma.2009.11.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2009] [Revised: 11/09/2009] [Accepted: 11/10/2009] [Indexed: 11/17/2022]
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143
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Negreira N, Rodríguez I, Ramil M, Rubí E, Cela R. Solid-phase extraction followed by liquid chromatography–tandem mass spectrometry for the determination of hydroxylated benzophenone UV absorbers in environmental water samples. Anal Chim Acta 2009; 654:162-70. [DOI: 10.1016/j.aca.2009.09.033] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2009] [Revised: 09/02/2009] [Accepted: 09/17/2009] [Indexed: 10/20/2022]
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Riesco-Eizaguirre G, Rodríguez I, De la Vieja A, Costamagna E, Carrasco N, Nistal M, Santisteban P. The BRAFV600E oncogene induces transforming growth factor beta secretion leading to sodium iodide symporter repression and increased malignancy in thyroid cancer. Cancer Res 2009; 69:8317-25. [PMID: 19861538 DOI: 10.1158/0008-5472.can-09-1248] [Citation(s) in RCA: 202] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The activating mutation BRAF(V600E) is a frequent genetic event in papillary thyroid carcinomas (PTC) that predicts a poor prognosis, leading to loss of sodium/iodide symporter (NIS) expression and subsequent radioiodide-refractory metastatic disease. The molecular basis of such an aggressive behavior induced by BRAF remains unclear. Here, we show a mechanism through which BRAF induces NIS repression and promotes epithelial to mesenchimal transition and invasion based on the operation of an autocrine transforming growth factor (TGF)beta loop. BRAF induces secretion of functional TGFbeta and blocking TGFbeta/Smad signaling at multiple levels rescues BRAF-induced NIS repression. Although this mechanism is MAP/extracellular signal-regulated kinase (ERK) kinase (MEK)-ERK independent, secreted TGFbeta cooperates with MEK-ERK signaling in BRAF-induced cell migration, Matrigel invasion, and EMT. Consistent with this process, TGFbeta and other key components of TGFbeta signaling, such as TbetaRII and pSmad2, are overexpressed in human PTC, suggesting a widespread activation of this pathway by locally released TGFbeta. Moreover, this high TGFbeta/Smad activity is associated with PTC invasion, nodal metastasis, and BRAF status. Interestingly, TGFbeta is overexpressed in the invasive front, whereas NIS is preferentially expressed in the central regions of the tumors, suggesting that this negative correlation between TGFbeta and NIS occurs locally inside the tumor. Our study describes a novel mechanism of NIS repression in thyroid cancer and provides evidence that TGFbeta may play a key role in promoting radioiodide resistance and tumor invasion during PTC progression.
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García-López M, Rodríguez I, Cela R. Pressurized liquid extraction of organophosphate triesters from sediment samples using aqueous solutions. J Chromatogr A 2009; 1216:6986-93. [DOI: 10.1016/j.chroma.2009.08.068] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Revised: 08/19/2009] [Accepted: 08/27/2009] [Indexed: 11/16/2022]
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146
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Ferreyra C, O'Valle F, Osorio J, Moreno J, Rodríguez I, Vargas F, Osuna A. Effect of Preconditioning With Triiodothyronine on Renal Ischemia/Reperfusion Injury and Poly(ADP-Ribose) Polymerase Expression in Rats. Transplant Proc 2009; 41:2073-5. [DOI: 10.1016/j.transproceed.2009.06.060] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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147
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Negreira N, Rodríguez I, Rubí E, Cela R. Determination of selected UV filters in indoor dust by matrix solid-phase dispersion and gas chromatography-tandem mass spectrometry. J Chromatogr A 2009; 1216:5895-902. [PMID: 19539293 DOI: 10.1016/j.chroma.2009.06.020] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2009] [Revised: 05/26/2009] [Accepted: 06/05/2009] [Indexed: 11/24/2022]
Abstract
A simple, inexpensive sample preparation procedure, based on the matrix solid-phase dispersion (MSPD) technique, for the determination of six UV filters: 2-ethylhexyl salicylate (EHS), 3,3,5-trimethylcyclohexyl salicylate (Homosalate, HMS), 3-(4-methylbenzylidene) camphor (4-MBC), isoamyl-p-methoxycinnamate (IAMC), 2-ethylhexyl-p-methoxycinnamate (EHMC) and octocrylene (OCR), in dust from indoor environments is presented and the influence of several operational parameters on the extraction performance discussed. Under the final working conditions, sieved samples (0.5 g) were mixed with the same amount of anhydrous sodium sulphate and dispersed with 2 g of octadecyl bonded silica (C18) in a mortar with a pestle. This blend was transferred to a polypropylene solid-phase extraction cartridge containing 2 g of activated silica, as the clean-up co-sorbent. The cartridge was first rinsed with 5 mL of n-hexane and the analytes were then recovered with 4 mL of acetonitrile. This extract was adjusted to 1 mL, filtered and the compounds were determined by gas chromatography combined with tandem mass spectrometry (GC-MS/MS). Recoveries for samples spiked at two different concentrations ranged between 77% and 99%, and the limits of quantification (LOQs) of the method between 10 and 40 ng g(-1). Analysis of settled dust from different indoor areas, including private flats, public buildings and vehicle cabins, showed that EHMC and OCR were ubiquitous in this matrix, with maximum concentrations of 15 and 41 microg g(-1), respectively. Both UV filters were also quantified in dust reference material SRM 2585 for first time. EHS, 4-MBC and IAMC were detected in some of the analyzed samples, although at lower concentrations than EHMC and OCR.
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Rodríguez I, Barownick W, Helmuth R, Mendoza MC, Rodicio MR, Schroeter A, Guerra B. Extended-spectrum β-lactamases and AmpC β-lactamases in ceftiofur-resistant Salmonella enterica isolates from food and livestock obtained in Germany during 2003–07. J Antimicrob Chemother 2009; 64:301-9. [DOI: 10.1093/jac/dkp195] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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149
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Dorado J, Hidalgo M, Muñoz A, Rodríguez I. Assessment of goat semen freezability according to the spermatozoa characteristics from fresh and frozen samples. Anim Reprod Sci 2009; 112:150-7. [DOI: 10.1016/j.anireprosci.2008.04.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2007] [Revised: 03/27/2008] [Accepted: 04/02/2008] [Indexed: 10/22/2022]
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150
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Negreira N, Rodríguez I, Ramil M, Rubí E, Cela R. Sensitive determination of salicylate and benzophenone type UV filters in water samples using solid-phase microextraction, derivatization and gas chromatography tandem mass spectrometry. Anal Chim Acta 2009; 638:36-44. [DOI: 10.1016/j.aca.2009.02.015] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2008] [Revised: 02/09/2009] [Accepted: 02/10/2009] [Indexed: 11/29/2022]
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