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Diagnostic Utility of PSMA 18F-DCFPyL PET/TC in Occult Biochemical Recurrence of Prostate Carcinoma with PSA Values <2ng/ml More than Two Years of Experience. Int J Radiat Oncol Biol Phys 2023; 117:e364. [PMID: 37785249 DOI: 10.1016/j.ijrobp.2023.06.2456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To analyze the diagnostic capability of PET-PSMA in clinical practice in patients with occult biochemical recurrence of prostate carcinoma with PSA values less than 2ng/ml. MATERIALS/METHODS The first 116 patients who underwent PSMA 18F-DCFPyL PET/TC at the centers participating in the study for occult biochemical recurrence of prostatic neoplasia were selected. All patients had low PSA values (<2ng/ml). The studies were visually assessed by two experts in Nuclear Medicine, and classified dichotomously as positive or negative/inconclusive. The diagnostic capacity of the test was determined according to the PSA values, as well as the densities by groups. Descriptive statistical analysis was performed. The AUC was evaluated, determining the optimal cut-off point and its precision parameters. RESULTS The retrospective analysis showed that 66/116 patients (56.9%) were positive, with statistically significant differences in the medians of the positive group (AUC 0.77) and 50/116 (43.1%) patients were negative (AUC 0.42). The study of densities by group showed a marked clustering of the negative/ inconclusive studies in PSA values less than 0.5 ng/ml. Correlation was observed between the PSA values and the detection capability of the test (AUC: 0,74). The optimal cut-off point calculated was 0,55 which showed a sensitivity of 0,75 and specificity of 0,68. CONCLUSION PET-PSMA shows excellent diagnostic capability even in strictly selected patients with PSA values < 2ng/ml. Its indication with values < 0.5ng/mL should be assessed according to individual risk. In 56.9% of the patients in the study the positive result could influence changes in therapeutic strategy.
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First Report of Cucurbit Chlorotic Yellows Virus Infecting Watermelon and Zucchini in the Canary Islands, Spain. PLANT DISEASE 2022; 106:PDIS10212296PDN. [PMID: 34931898 DOI: 10.1094/pdis-10-21-2296-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
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PROGNOSTIC FACTORS IN ELDERLY PATIENTS WITH CLASSICAL HODGKIN LYMPHOMA ‐ A JOINT ANALYSIS OF TWO CLINICAL DATABASES. Hematol Oncol 2021. [DOI: 10.1002/hon.113_2880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Transient Support from Fibroblasts is Sufficient to Drive Functional Vascularization in Engineered Tissues. ADVANCED FUNCTIONAL MATERIALS 2020; 30:2003777. [PMID: 33613149 PMCID: PMC7891457 DOI: 10.1002/adfm.202003777] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Indexed: 05/05/2023]
Abstract
Formation of capillary blood vasculature is a critical requirement for native as well as engineered organs and can be induced in vitro by co-culturing endothelial cells with fibroblasts. However, whether these fibroblasts are required only in the initial morphogenesis of endothelial cells or needed throughout is unknown, and the ability to remove these stromal cells after assembly could be useful for clinical translation. In this study, we introduce a technique termed CAMEO (Controlled Apoptosis in Multicellular Tissues for Engineered Organogenesis), whereby fibroblasts are selectively ablated on demand, and utilize it to probe the dispensability of fibroblasts in vascular morphogenesis. The presence of fibroblasts is shown to be necessary only during the first few days of endothelial cell morphogenesis, after which they can be ablated without significantly affecting the structural and functional features of the developed vasculature. Furthermore, we demonstrate the use of CAMEO to vascularize a construct containing primary human hepatocytes that improved tissue function. In conclusion, this study suggests that transient, initial support from fibroblasts is sufficient to drive vascular morphogenesis in engineered tissues, and this strategy of engineering-via-elimination may provide a new general approach for achieving desired functions and cell compositions in engineered organs.
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Necesidades de información en las empresas: estudio de un caso. REVISTA ESPANOLA DE DOCUMENTACION CIENTIFICA 2020. [DOI: 10.3989/redc.1993.v16.i2.229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
El estudio de las necesidades de información en las empresas es una tarea compleja y urgente que se está acometiendo desde distintas vertientes, con el fin de ir completando el conocimiento que se tiene de este tipo de usuario de información. En este sentido, en el trabajo se estudian las necesidades de información de las empresas norteamericanas del estado de Indiana, a partir de una serie de entrevistas con responsables de centros de información y servicios de desarrollo, que atendían las distintas demandas de las empresas. Asimismo, en el trabajo se ha utilizado una encuesta realizada por la Universidad del Estado de Indiana sobre el uso y los tipos de información más demandados por las empresas.
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Procedure to build a signal transfer set, independent of the target analytes, between a portable fluorimeter based on light-emitting diodes and a master fluorimeter. Anal Chim Acta 2020; 1106:33-41. [DOI: 10.1016/j.aca.2020.01.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/27/2020] [Accepted: 01/30/2020] [Indexed: 11/25/2022]
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Improvement in the identification and quantification of UV filters and additives in sunscreen cosmetic creams by gas chromatography/mass spectrometry through three-way calibration techniques. Talanta 2019; 205:120156. [DOI: 10.1016/j.talanta.2019.120156] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/10/2019] [Accepted: 07/14/2019] [Indexed: 12/01/2022]
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Fluorescence determination of cochineal in strawberry jam in the presence of carmoisine as a quencher by means of four-way PARAFAC decomposition. Food Chem 2019; 290:178-186. [DOI: 10.1016/j.foodchem.2019.03.113] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 03/18/2019] [Accepted: 03/21/2019] [Indexed: 10/27/2022]
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Determination of cochineal and erythrosine in cherries in syrup in the presence of quenching effect by means of excitation-emission fluorescence data and three-way PARAFAC decomposition. Talanta 2019; 196:153-162. [DOI: 10.1016/j.talanta.2018.12.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/12/2018] [Accepted: 12/14/2018] [Indexed: 11/28/2022]
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D-Optimal Design and PARAFAC as Useful Tools for the Optimisation of Signals from Fluorescence Spectroscopy Prior to the Characterisation of Green Tea Samples. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-01408-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Effects of physical therapy on postural imbalance depending on time since stroke: A meta-analysis. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Effect of the cleaning procedure of Tenax on its reuse in the determination of plasticizers after migration by gas chromatography/mass spectrometry. Talanta 2018; 182:505-522. [DOI: 10.1016/j.talanta.2018.02.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/01/2018] [Accepted: 02/04/2018] [Indexed: 11/27/2022]
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STRESSFUL LIFE-EVENTS AND COPING STRATEGIES IN OLD AGE: A COMPARISON BETWEEN SPAIN AND PUERTO RICO. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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PCA3 as a second-line biomarker in a prospective controlled randomized opportunistic prostate cancer screening programme. Actas Urol Esp 2017; 41:300-308. [PMID: 28342633 DOI: 10.1016/j.acuro.2016.10.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/07/2016] [Accepted: 10/10/2016] [Indexed: 12/14/2022]
Abstract
OBJECTIVES PCA3 performance as a single second line biomarker is compared to the European Randomised Study of Screening for Prostate Cancer risk calculator model 3 (ERSPC RC-3) in an opportunistic screening in prostate cancer (PCa). MATERIAL AND METHODS 5,199 men, aged 40-75y, underwent prostate-specific antigen (PSA) screening and digital rectal examination (DRE). Men with a normal DRE and PSA ≥3ng/ml had a PCA3 test done. All men with PCA3 ≥35 underwent an initial biopsy (IBx) -12 cores-. Men with PCA3 <35 were randomized 1:1 to either IBx or observation. We compared them to those obtained with ERSPC RC-3. RESULTS PCA3 test was performed on 838 men (16.1%). In PCA3(+) and PCA3(-) groups, global PCa detection rates were 40.9% and 14.7% with a median follow-up (FU) of 21.7 months (P<.001). In the PCA3(+) arm (n=301, 35.9%), PCa was identified in 115 men at IBx (38.2%). In the randomized arm, 256 underwent IBx and PCa was found in 46 (18.0%) (P<.001). The biopsy-sparing potential would have been 64.1% as opposed to 76.6% if we had used ERSPC RC-3. However, the estimated false negative cases for HGPCa would have been reduced by 37.1% (89 to 56 patients). Moreover, if we had applied PCA3-35 to avoid IBx, 14.7% PCa and 9.1% of clinical significant PCa patients would not have been diagnosed during this FU. CONCLUSIONS When PCA3-35 is used as a second-line biomarker when PSA ≥3ng/ml and DRE is normal, IBx could be avoided in 12.5% less than if ERSPC RC-3 is used and would reduce the false negative cases by 36.2%. At a FU of 21.7 months, this dual protocol would miss 9.1% of clinically significant PCa, so strict FU is mandatory with established biopsy criteria based on PSA and DRE in cases with PCA3 <35.
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LONG-TERM FOLLOW-UP AND PREDICTORS OF POOR OUTCOME IN PATIENTS WITH FOLLICULAR LYMPHOMA UNDERGOING FRONT-LINE TREATMENT WITH CHEMOIMMUNOTERAPY: A SINGLE CENTER EXPERIENCE. Hematol Oncol 2017. [DOI: 10.1002/hon.2439_127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Skin permeation and antioxidant efficacy of topically applied resveratrol. Arch Dermatol Res 2017; 309:423-431. [PMID: 28389713 DOI: 10.1007/s00403-017-1740-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 03/14/2017] [Accepted: 04/04/2017] [Indexed: 11/26/2022]
Abstract
The permeation of resveratrol was assessed by in vitro and in vivo experiments 24 h after topical administration. The in vitro profile of resveratrol was assessed by Raman spectroscopy. Human skin permeation was analysed in vivo by the tape stripping method with the progressive removal of the stratum corneum layers using adhesive tape strips. Moreover, the free radical scavenging activity of resveratrol after its topical application was determined using the DPPH assay. The Raman spectra indicated that the topically applied resveratrol penetrates deep into the skin. The results showed high amounts of resveratrol in the different stratum corneum layers close to the surface and a constant lower amount in the upper layers of the viable epidermis. The concentration of resveratrol present in the outermost stratum corneum layers was obtained by tape stripping after in vivo application. The results demonstrated that resveratrol mainly remained in the human stratum corneum layers. After topical application, resveratrol maintained its antiradical activity. The antioxidant efficacy of the compound was higher in the inner layers of the stratum corneum. As these results have demonstrated, topically applied resveratrol reinforces the antioxidant system of the stratum corneum and provides an efficient means of increasing the tissue levels of antioxidants in the human epidermis.
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Exogenous and endogenous lipids of human hair. Skin Res Technol 2017; 23:479-485. [DOI: 10.1111/srt.12359] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2017] [Indexed: 11/27/2022]
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Skin penetration and antioxidant effect of cosmeto-textiles with gallic acid. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 156:50-5. [PMID: 26848532 DOI: 10.1016/j.jphotobiol.2016.01.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 01/22/2016] [Accepted: 01/25/2016] [Indexed: 10/22/2022]
Abstract
In this work, the antioxidant gallic acid (GA) has been encapsulated in microspheres prepared with poly-ε-caprolactone (PCL) and incorporated into polyamide (PA) obtaining the cosmeto-textile. The topical application of the cosmeto-textile provides a reservoir effect in the skin delivery of GA. The close contact of the cosmeto-textile, containing microsphere-encapsulated GA (ME-GA), with the skin and their corresponding occlusion, may be the main reasons that explain the crossing of active principle (GA) through the skin barrier, located in the stratum corneum, and its penetration into the different compartments of the skin, epidermis and dermis. An ex vivo assessment was performed to evaluate the antioxidant effect of the ME-GA on the stratum corneum (SC) using the thiobarbituric acid-reactive species (TBARS) test. The test is based on a non-invasive ex vivo methodology that evaluates lipid peroxides formed in the outermost layers of the SC from human volunteers after UV radiation to determine the effectiveness of an antioxidant. In this case, a ME-GA cosmeto-textile or ME-GA formulation were applied to the skin in vivo and lipid peroxidation (LPO) in the horny layer were determined after UV irradiation. This methodology may be used as a quality control tool to determine ex vivo the percentage of LPO inhibition on human SC for a variety of antioxidants that are topically applied, in this case GA. Results show that LPO formation was inhibited in human SC when GA was applied directly or embedded in the cosmeto-textile, demonstrating the effectiveness of both applications. The percentage of LPO inhibition obtained after both topical applications was approximately 10% for the cosmeto-textile and 41% for the direct application of microspheres containing GA. This methodology could be used to determine the effectiveness of topically applied antioxidants encapsulated in cosmeto-textiles on human SC.
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Influence of vehicles on antioxidant efficacy in hair. RSC Adv 2016. [DOI: 10.1039/c5ra26815j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Microspheres are the best vehicle to increase the antioxidant efficacy of gallic acid in hair.
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Moderated Posters session: diastolic function in clinical perspectiveP1260Coronary flow reserve in patients with chest pain but without significant coronary stenosis: the role of hypertensionP1261Diastolic bicycle exercise: normal reference values and determinantsP1262Prediction of left ventricular diastolic dysfunction in breast cancer patients after chemotherapyP1263Impaired diastolic recovery is associated with adverse events in the patients with hypertensive heart failureP1264Diastolic strain parameters in hypertensive heart disease: Insights from a speckle tracking imagingP1265Standard echocardiographic parameters to assess right ventricular diastolic function does not detect increased end diastolic right ventricular pressure in pulmonary vascular diseaseP1266In heart failure with preserved ejection fraction carotid arterial stiffness is increased and may contribute to reduced functional reserveP1267Study of left atrial function by speckle tracking in young Egyptian females with unexplained dyspnea; pilot reportP1268stress effect on diastolic functionP1269Diastolic function and adjusted diastolic index in apparently healthy obese patients. Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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External validation of FXYD3 and KRT20 as predictive biomarkers for the presence of micrometastasis in muscle invasive bladder cancer lymph nodes. Actas Urol Esp 2015; 39:473-81. [PMID: 25920992 DOI: 10.1016/j.acuro.2015.02.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 02/09/2015] [Accepted: 02/10/2015] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Recent studies have proposed that FXYD3 and KRT20 mRNA quantified by quantitative reverse transcription polymerase chain reaction (qRT-PCR) in paraffin could be biomarkers to detect lymph nodes with micrometastases that avoid detection by conventional analysis with hematoxylin-eosin (HE). A validation study was conducted on the lymph nodes of patients who underwent radical cystectomy. OBJECTIVE To classify the adenopathic state of a sample of patients who underwent cystectomy, based on the lymph node expression of FXYD3 and KRT20. The secondary objective was to assess whether there is a differential oncologic evolution for the patients, depending on the lymph node expression of these proteins. MATERIAL AND METHOD The study included lymph nodes from 64 patients who underwent cystectomy for infiltrating bladder tumor: The model was developed using metastatic lymph nodes from 15 patients and lymph nodes from 4 patients with no known tumor. Genetic expression was measured using real-time qRT-PCR. We calculated (using qRT-PCR) the median expression of FXYD3 and KRT20 mRNA in the lymph node tissue. We then analyzed the receiver operating characteristic (ROC) curves, according to the function y=0.1400+0.250FXYD3-2.532. The cutoff was established using an ROC curve. The formula was applied to the remaining lymph node tissue, based on the previously established cutoff. The sample was classified into 4 subgroups: HE- qRT-PCR-, HE- qRT-PCR+, HE+ qRT-PCR+ y HE+, qRT-PCR-. A descriptive, comparative analysis was performed, as well as a metastatic progression-free survival analysis, calculating the Kaplan and Meyer curves for the 3 established subgroups. The test results were considered statistically significant at P<.05. RESULTS Using qRT-PCR, we verified that there were differences in the median expression of FXYD3 (P=.05) and KRT20 (P=.009) between the lymph node tissues of patients with benign prostate hyperplasia and those of patients with lymph node metastasis. A cutoff was assigned to 0.377. The sample was classified as follows: 37.5% of the patients were pN0 by HE and pN0 by qRT-PCR (-HE -qRT-PCR), 39.1% were pN0 by HE but metastatic by qRT-PCR (-HE +qRT-PCR), and 15 patients (23.4%) were metastatic by both techniques (+HE +qRT-PCR). The Kaplan and Meyer curves showed poorer metastatic progression-free survival for the patients who were +HE and +qRT-PCR than for the other subgroups, with no significant differences between -HE +qRT-PCR and -HE -qRT-PCR. CONCLUSIONS According to our results, 39.1% of the patients with infiltrating vesical tumors overexpressed the FXYD3 and KRT20 biomarkers and were N0 by HE. We observed no differential clinical behavior among the patients who underwent cystectomy according to their expression of FXYD3 and KRT20 when they were N0 by HE.
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External validation of FXYD3 and KRT20 as predictive biomarkers for the presence of micrometastasis in muscle invasive bladder cancer lymph nodes. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.acuroe.2015.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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The influence of hair lipids in ethnic hair properties. Int J Cosmet Sci 2015; 38:77-84. [DOI: 10.1111/ics.12261] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 06/30/2015] [Indexed: 12/01/2022]
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Advanced hair damage model from ultra-violet radiation in the presence of copper. Int J Cosmet Sci 2015; 37:532-41. [PMID: 25923177 DOI: 10.1111/ics.12231] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 03/25/2015] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Damage to hair from UV exposure has been well reported in the literature and is known to be a highly complex process involving initiation via absorption of UV light followed by formation and propagation of reactive oxygen species (ROS). The objective of this work was to understand these mechanisms, explain the role of copper in accelerating the formation of ROS and identify strategies to reduce the hair damage caused by these reactive species. METHODS The location of copper in hair was measured by Transmission electron microscopy-(TEM) X-ray energy dispersive spectroscopy (XEDS) and levels measured by ICP-OES. Protein changes were measured as total protein loss via the Lowry assay, and MALDI ToF was used to identify the biomarker protein fragments. TBARS assay was used to measure lipid peroxide formation. Sensory methods and dry combing friction were used to measure hair damage due to copper and UV exposure and to demonstrate the efficacy of N,N' ethylenediamine disuccinic acid (EDDS) and histidine chelants to reduce this damage. RESULTS In this work, a biomarker protein fragment formed during UV exposure is identified using mass spectrometry. This fragment originates from the calcium-binding protein S100A3. Also shown is the accelerated formation of this peptide fragment in hair containing low levels of copper absorbed from hair during washing with tap water containing copper ions. Transmission electron microscopy (TEM) X-ray energy dispersive spectroscopy (XEDS) studies indicate copper is located in the sulphur-poor endo-cuticle region, a region where the S100A3 protein is concentrated. A mechanism for formation of this peptide fragment is proposed in addition to the possible role of lipids in UV oxidation. A shampoo and conditioner containing chelants (EDDS in shampoo and histidine in conditioner) is shown to reduce copper uptake from tap water and reduce protein loss and formation of S100A3 protein fragment. In addition, the long-term consequences of UV oxidation and additional damage induced by copper are illustrated in a four-month wear study where hair was treated with a consumer relevant protocol of hair colouring treatments, UV exposure and regular shampoo and conditioning. CONCLUSIONS The role of copper in accelerating UV damage to hair has been demonstrated as well as the ability of chelants such as EDDS and histidine in shampoo and conditioner products to reduce this damage.
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Standard addition method based on four-way PARAFAC decomposition to solve the matrix interferences in the determination of carbamate pesticides in lettuce using excitation-emission fluorescence data. Talanta 2015; 138:86-99. [PMID: 25863376 DOI: 10.1016/j.talanta.2015.01.042] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 01/26/2015] [Accepted: 01/31/2015] [Indexed: 11/19/2022]
Abstract
The simultaneous determination of two carbamate pesticides (carbaryl and carbendazim) and of the degradation product of carbaryl (1-naphthol) in iceberg lettuce was achieved by means of PARAFAC decomposition and excitation-emission fluorescence matrices. A standard addition method for a calibration based on four-way data was applied using different dilutions of the extract from iceberg lettuce as a fourth way that provided the enough variation of the matrix to carry out the four-way analysis. A high fluorescent overlapping existed between the three analytes and the fluorophores of the matrix. The identification of two fluorescent matrix constituents through the four-way model enabled to know the matrix contribution in each dilution of the extract. This contribution was subtracted from the previous signals and a subsequent three-way analysis was carried out with the tensors corresponding to each dilution. The PARAFAC decomposition of these resulting tensors showed a CORCONDIA index equal to 99%. For the identification of the analytes, the correlation between the PARAFAC spectral loadings and the reference spectra has been used. The trueness of the method, in the concentration range studied, was guaranteed because there was neither constant nor proportional bias according to the appropriate hypothesis tests. The best recovery percentages were obtained with the data from the most diluted extract, being the results: 127.6% for carbaryl, 125.55% for carbendazim and 87.6% for 1-naphthol. When the solvent calibration was performed, the decision limit (CCα) and the capability of detection (CCβ) values, in x0=0, were 2.21 and 4.38 μg L(-1) for carbaryl, 4.87 and 9.64 μg L(-1) for carbendazim; and 3.22 and 6.38 μg L(-1) for 1-naphthol, respectively, for probabilities of false positive and false negative fixed at 0.05. However, these values were 5.30 and 10.49 μg L(-1) for carbaryl, 18.05 and 35.73 μg L(-1) for carbendazim; and 1.92 and 3.79 μg L(-1) for 1-naphthol, respectively, when the matrix-matched calibration using the most diluted extract was carried out in the recovery study.
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[Update on the diagnosis of PCa in urine. The current role of urine markers]. ARCH ESP UROL 2015; 68:240-249. [PMID: 25948797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Prostate cancer (PCa) is still a main health issue, in fact it is responsible for 10% of cancer deaths across Europe. The morphology of the prostate gland makes urine an ideal sample, non invasive, for determination both diagnostic and prognostic biomarkers. We use urinary PCA3 levels to indicate a prostate biopsy, and it is the only urinary biomarkers in PCa with FDA approval for clinical use. Many other biomarkers based on the expression of specific genes of PCa are being studied and validated, for instance the fusion gene TMPRSS2-ERG with a commercial kit available, while another approach is to test the expression of a panel of genes. An emerging focus of research, which deserves attention, is miRNAs. Other newer approaches such as epigenetics, proteomics and metabolomics also would be very useful in the future for the development and validation of new biomarkers. In this paper we review the state of the art in the field of urinary biomarkers in PCa.
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Abstract
A survey of viral diseases was carried out during 2012 to 2013 in two major tomato (Solanum lycopersicum L.) producing regions in Uruguay (Salto and Canelones). Lower leaves of fruit-bearing plants were observed displaying yellowing and interveinal chlorosis under greenhouse conditions. The symptoms were similar to those associated with magnesium deficiency. However, the chlorosis displayed a tendency to move up affecting medial and apical leaves and prevailed even after supplementary magnesium applications to the soil, indicating potential infection by either Tomato chlorosis virus (ToCV) or Tomato infectious chlorosis virus (TICV) (3). Four leaf samples were collected from two sites in Canelones and 28 samples were collected from distinct commercial fields in Salto. Whiteflies (Bemisia tabaci biotype Q and Trialeurodes vaporariorum) were present in all sampling sites. Total RNA was extracted from symptomatic and healthy (control) plants and used for cDNA preparation with the HS-11/HS-12 primer pair followed by PCR amplification using the same primer pair. The 587-bp amplicon, corresponding to a highly conserved region of the heat shock protein (HSP-70) homolog gene reported in both TICV and ToCV genomes, was observed only in the symptomatic samples. These PCR products were then subjected to nested PCR using the ToCV specific primer pair (ToC-5/ToC-6) and TICV specific primer pair (TIC-3/TIC-4) (1). The expected 463-bp ToCV-specific amplicon was observed in all symptomatic plants but not in the healthy controls. The 223-bp amplicon corresponding to TICV was not observed in any sample, indicating the sole presence of ToCV. The amplicon of one Uruguayan ToCV isolate from Salto (named as CRS03) was purified and directly sequenced (GenBank KC626018). BLAST analysis revealed 99% identity of CRS03 with one Spanish isolate (AF233435.1) (2). Virus-free B. tabaci biotype Q adults were exposed to symptomatic plants infected with the CRS03 isolate for a 24-h period and then cage-confined with 10 healthy tomato plants (line 'LT17') for a 48-h period. Symptoms were reproduced in all tested plants after a 65-day period and ToCV infection was confirmed via PCR assays and by sequence analysis of the gel-purified amplicons. This is the first formal report of ToCV infecting tomatoes in Uruguay. Incidence of symptomatic plants in tomato crops varied from 30 to 100%, even under low whitefly pressure. Epidemiological information needs to be generated in order to evaluate the impact of ToCV in the fresh-market tomato yield and quality. References: (1) C. I. Dovas et al. Plant Dis. 86:1345, 2002. (2) G. Lozano et al. Arch. Virol. 151:581, 2006. (3) G. C. Wisler et al. Arch. Virol. 151:409, 2006.
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Optimizing prostate cancer screening; prospective randomized controlled study of the role of PSA and PCA3 testing in a sequential manner in an opportunistic screening program. Actas Urol Esp 2014; 38:217-23. [PMID: 24169211 DOI: 10.1016/j.acuro.2013.09.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2013] [Accepted: 09/08/2013] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To reduce unnecessary biopsies (Bx) in an opportunistic screening programme of prostate cancer. MATERIAL AND METHODS We perform a prospective evaluation of PCA3 as a second line biomarker in an opportunistic screening for prostate cancer (PCa). From September-2010 until September-2012, 2,366 men, aged 40-74 years and with >10 years life expectancy, were initially screened with PSA/digital rectal examination (DRE). Men with previous Bx or with recent urine infections were excluded. Men with abnormal DRE and/or PSA >3 ng/ml were submitted for PCA3. All men with PCA3 ≥ 35 underwent an initial biopsy (IBx) -12cores-. Men with PCA3 < 35 were randomized 1:1 to either IBx or observation. Re-biopsy(16-18 cores) criteria were PSA increase >.5 ng/ml at 4-6 months or PSAv > .75 ng/ml/year. RESULTS With median follow-up (FU) of 10.1 months, PCA3 was performed in 321/2366 men (13.57%), 289 at first visit and 32 during FU. All 110 PCA3+ men (34.3%) were biopsied and PCa was identified in 43 men in IBx (39.1%). In the randomized arm, 110 were observed and 101 underwent biopsy, finding 12 PCa (11.9%), showing a statistically significant reduction of PCa detection rate in this cohort (P<.001). Global PCa detection rates were 40.9% and 9.5% for the PCA3+ and PCA3- branches, respectively (P<.001). Area under the curve for PSA and PCA3 were .601 and .74, respectively. This is an ongoing prospective study limited by its short follow-up period and still limited enrolment. CONCLUSIONS PCA3 as a second line biomarker within an opportunistic dual screening protocol, can potentially avoid 65.7% and 50.1% biopsies at first round and at median FU of 10.1 months, respectively, just missing around 3.2% of high grade PCa.
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Identification and quantification of carbamate pesticides in dried lime tree flowers by means of excitation-emission molecular fluorescence and parallel factor analysis when quenching effect exists. Anal Chim Acta 2014; 820:9-22. [DOI: 10.1016/j.aca.2014.02.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 01/31/2014] [Accepted: 02/06/2014] [Indexed: 11/25/2022]
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Abstract
The effects of neonatal food restriction upon the dendritic development of facial nucleus (FN) motor neurons of Wistar rats were analyzed. Rats neonatally underfed by daily (12 h) mother-litter separation in an incubator from 5-30 days after birth exhibited, in brain stem Golgi-Cox sections, significant reductions in the number and extension of stellate, triangular and bipolar FN neuronal dendritic prolongations with negligible effects upon perikarya measurements. Data suggest that in the underfed newborn, the ability of FN neurons to establish synaptic contacts with afferent fibers is reduced, which then interferes with their capacities for the integration and triggering of nerve impulses to modulate facial motor expression in response to sensory cues.
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Bicellar systems as new delivery strategy for topical application of flufenamic acid. Int J Pharm 2013; 444:60-9. [DOI: 10.1016/j.ijpharm.2013.01.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 01/14/2013] [Accepted: 01/17/2013] [Indexed: 11/25/2022]
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KIT Mutations in a Series of Melanomas and Their Impact on Treatment With Imatinib. ACTAS DERMO-SIFILIOGRAFICAS 2012. [DOI: 10.1016/j.adengl.2011.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Mutaciones en KIT en una serie de melanomas y repercusiones en el tratamiento con imatinib. ACTAS DERMO-SIFILIOGRAFICAS 2012; 103:838-40. [DOI: 10.1016/j.ad.2011.10.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2011] [Revised: 10/15/2011] [Accepted: 10/31/2011] [Indexed: 10/28/2022] Open
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[Glucose effect in the expression of endothelial lipase in human endothelial cells and in patients with diabetes mellitus type 2]. NUTR HOSP 2012; 26:916-21. [PMID: 22470043 DOI: 10.1590/s0212-16112011000400036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Accepted: 03/04/2011] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Endothelial Lipase (EL), enzyme that modulates HDL metabolism, is overregulated by inflammatory-cytokines. Type 2 Diabetes (DM2) has been associated with a subclinical inflammation, so it has been ruled that these patients could have high levels of EL. The objectives of the research are to determine the effect of glucose in the expression of EL in culturing cells and evaluate the relation between the levels of EL and the metabolic control in patients with DM2. METHOD During 24 hours, human endothelial cells (HUVEC) were stimulated with different concentrations of glucose (5.5, 25 and 50 mmol/L), the effect was evaluated over the expression of EL. In DM2 patients levels of EL, glucose and HbA1c were measured. We had a control group (8) to determine the levels of enzyme. EL was measured by immune transference, and the results were expressed by arbitrary units(AU). RESULTS In HUVEC cells, the expression of EL was directly proportional extracellular glucose (p < 0.05). 24 diabetic patients were evaluated (15 females and 9 males) average age from 60 ± 9,7 years old. The studied group showed levels of EL bigger than the control group (14911AU and 10250, 18AU) respectively (p < 0.05). We found no relation between glucose, HbA1c and EL. CONCLUSION In HUVEC cells there is a direct relation between extracell glucose and EL. The diabetic patients had higher levels of EL than the control group, but these was not related with glucose or HbA1c, these shows the existence of other factors that participate in the increasement of EL.
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Bicellar systems as a new colloidal delivery strategy for skin. Colloids Surf B Biointerfaces 2012; 92:322-6. [DOI: 10.1016/j.colsurfb.2011.12.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 10/07/2011] [Accepted: 12/06/2011] [Indexed: 10/14/2022]
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Genetic variability and evolutionary analyses of the coat protein gene of Tomato mosaic virus. Virus Genes 2011; 43:435-8. [DOI: 10.1007/s11262-011-0651-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Accepted: 07/29/2011] [Indexed: 10/17/2022]
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Detection and absolute quantitation of Broad bean wilt virus 1 (BBWV-1) and BBWV-2 by real time RT-PCR. J Virol Methods 2011; 177:202-5. [PMID: 21855578 DOI: 10.1016/j.jviromet.2011.08.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 07/25/2011] [Accepted: 08/01/2011] [Indexed: 01/01/2023]
Abstract
Broad bean wilt virus 1 (BBWV-1) and BBWV-2 are the two most significant viruses in the genus Fabavirus, causing damage to many economically important agricultural crops worldwide. A quantitative real-time reverse transcription-polymerase chain reaction (RT-qPCR) procedure using two TaqMan(®)MGB probes was developed for sensitive and specific detection and quantitation of BBWV-1 and BBWV-2. Primers and probes were designed from conserved sequence stretches to detect all isolates of each virus. Standard curves using RNA transcripts identical to both TaqMan(®)MGB probes enabled absolute quantitation, with a wide dynamic range and high sensitivity (10(3)-10(10) RNA molecules). RT-qPCR was assayed with genetically divergent BBWV-1 and BBWV-2 isolates from different plant hosts and countries, and was used to evaluate the temporal accumulation of BBWV-1 RNA in two plant hosts.
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Expresión inmunohistoquímica de la densidad microvascular y de la anhidrasa carbónica IX en carcinoma renal: Relación con el tipo histológico y con la progresión tumoral. Actas Urol Esp 2011. [DOI: 10.4321/s0210-48062011000200004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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P91 From initial breast cancer visit to hospitalisation: taking care of women with breast cancer pathology. Eur J Oncol Nurs 2010. [DOI: 10.1016/s1462-3889(10)70153-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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61 Care continuity after discharge from the breast surgery division. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)70092-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Bicellar systems for in vitro percutaneous absorption of diclofenac. Int J Pharm 2010; 386:108-13. [DOI: 10.1016/j.ijpharm.2009.11.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Revised: 11/04/2009] [Accepted: 11/06/2009] [Indexed: 11/29/2022]
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Abstract
BACKGROUND The polymorphic enzyme human serum paraoxonase 1 (PON1), encoded by the gene PON1 (chromosome 7q21.3), plays a major role in the metabolism of organophosphorus compounds. We investigated the possible association between the PON1 genotype and allelic variants of the polymorphisms Leu55Met and Glu192Arg, and the risk for essential tremor (ET). METHODS We studied the frequency of the PON1 genotypes and allelic variants in 201 patients with ET and 220 healthy controls using a PCR-RLFP method. RESULTS The frequencies of the PON1 genotypes and allelic variants of the polymorphisms Leu55Met and Gln192Arg did not differ significantly between patients with ET and controls. These polymorphisms were unrelated with the age of onset of ET. CONCLUSIONS PON1 polymorphisms are not related with the risk for ET.
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P3.156 Alcohol dehydrogenase 2 polymorphism is not associated to the risk for essential tremor. Parkinsonism Relat Disord 2009. [DOI: 10.1016/s1353-8020(09)70720-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Impairment of rapid repetitive finger movements and visual reaction time in patients with essential tremor. Eur J Neurol 2009; 17:152-9. [PMID: 19765055 DOI: 10.1111/j.1468-1331.2009.02784.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND PURPOSE The question whether patients with essential tremor (ET) have slowed movements as part of their clinical manifestations is still a matter of controversy. We analyzed basic motor function in patients with ET and in healthy matched controls. METHODS We studied 61 patients with ET and 122 age- and sex-matched controls. Evaluation included four timed tests (pronation-supination, finger tapping and movement between two points, all with both hands, and walking test); and three tests performed on a personal computer (speed for pressing repetitively a key - frequency, visual reaction time and movement time, all with both hands). RESULTS Essential tremor patients showed higher mean values for right and left finger tapping, left movement between two points; and with right and left frequency and reaction time. In the logistic regression study, ET patients showed significantly higher values than controls for right and left finger tapping; mean, SD, maximum and rank values of right and left frequency; and mean, SD, minimum, maximum and rank values of right and left visual reaction time. Tremor severity was not correlated with the altered values. CONCLUSIONS Patients with ET showed impaired motor performance, at least in some tasks, such as rapid repetitive finger movements (finger tapping and frequency) and visual reaction time (impairment was not related with tremor severity). This probably means that patients with ET have some degree of bradykinesia.
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Suspicion of elder abuse in South Eastern Spain: the extent and risk factors. Arch Gerontol Geriatr 2008; 49:132-7. [PMID: 18676036 DOI: 10.1016/j.archger.2008.06.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2008] [Revised: 06/03/2008] [Accepted: 06/06/2008] [Indexed: 11/20/2022]
Abstract
Elder abuse is recognized internationally as a growing problem. Recent years have seen an increase in the number of authors recommending that the MDs systematically question old people concerning possible abuse. The aim of our study was to ascertain the extent of suspicion of elder abuse and the different types of abuse. We design a cross-sectional survey including 460 patients > or = 65 years at different health centers (South East Spain). A face-to-face interview and a physical examination was carried out. Extent of suspected abuse was 44.6%. Female sex, > or = 75 years, widowhood, living alone or with children, accommodation in house of relatives and income < or = 300 euros/month were the associated sociodemographic variables. The risk factors associated are recent worsening of health, living with a mentally ill person, excessive consumption of alcohol or illegal drugs, arguing frequently with relatives or the dependence on someone to carry out a daily activity. The signs in the physical examination associated are dehydration/malnutrition, pressure ulcers and poor body and/or mouth hygiene. There is a high extent of suspicion of elder abuse and the keyword in this respect is prevention.
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Abstract
Currently, the potential to interfere with the pathology of beta-amyloid targeting a well-known drugable enzyme, the acetylcholinesterase (AChE), is opened. Peripheral or dual binding site inhibitors of AChE may simultaneously alleviate the cognitive and behavioral deficits in Alzheimer's disease (AD) patients and, more importantly, act as disease-modifying agents delaying amyloid plaque formation. As part of a rational drug design program directed to find dual binding site AChE inhibitors, several families of compounds have been synthesized as potent AChE inhibitors. From these series, several drug candidates were selected based on their potent and selective inhibition of AChE (subnanomolar activity) and their interference with the beta-amyloid aggregation in vitro (IC(50) in the low micromolar range). First in vivo data confirm our initial hypothesis. Oral treatment with NP-61 for 3 months is able to reverse the cognitive impairment (Morris water maze test) and to reduce plaque load in the brains of human amyloid precursor protein transgenic mice (Swedish mutation). These results suggest that NP-61, a potent beta-amyloid modulator, is able to reverse the AD-like neurodegenerative phenotype in transgenic mice, indicating a promising disease-modifying agent for clinical application.
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Abstract
Glutathione-S-transferases (GST) are polymorphic enzymes that participate in the metabolism of carcinogens (including those of tobacco smoke) and pesticides. We investigated the possible association between the GSTP1 genotype and allelic variants and the risk for essential tremor (ET). We studied the frequency of the GSTP1 genotypes and allelic variants in 200 patients with ET and 220 healthy controls using PCR-RFLP method. The association between GSTP1 polymorphism and the exposure to some environmental factors (agricultural work, pesticides, well-water and smoking-cigarettes habit) was also studied in a subgroup of patients. The frequencies of the GSTP1 genotypes and allelic variants did not differ significantly between patients with ET and controls or between patients with ET exposed to agricultural work, well water and cigarette smoking versus those non-exposed. Mutated allelic variants were significantly more frequent in patients with ET exposed to pesticides versus those non-exposed. GSTP1 polymorphism was unrelated with the age of onset of ET. GSTP1 genotypes and allelic variants were not related with the risk for ET with the possible exception of those patients exposed to pesticides.
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8170 POSTER Care continuity after discharge from the Breast Surgery Division. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)71672-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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