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Chiarelli-Neto O, Yotoko K, Vidigal P, Silva F, Castro L, Fietto J, Silva A, Almeida M. Classification and putative origins of Brazilian porcine circovirus 2 inferred through phylogenetic and phylogeographical approaches. Virus Res 2009; 140:57-63. [DOI: 10.1016/j.virusres.2008.11.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2008] [Revised: 11/03/2008] [Accepted: 11/03/2008] [Indexed: 11/29/2022]
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Teeuw WJ, Coelho L, Silva A, van der Palen CJNM, Lessmann FGJM, van der Velden U, Loos BG. Validation of a dental image analyzer tool to measure alveolar bone loss in periodontitis patients. J Periodontal Res 2009; 44:94-102. [DOI: 10.1111/j.1600-0765.2008.01111.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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303
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Murillo-Ortiz B, Castillo-Valenzuela R, Martínez-Garza S, Moreno-Perez A, Silva A, Ruiz-García E, Astudillo-de la Vega H. Association of the polymorphisms CYP19 (TTTA)n in treatment response to hormone therapy based in aromatase inhibitors in breast cancer patients. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-3033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Abstract #3033
Background 
 Case-control studies have reported inconsistent results concerning breast cancer risk and polymorphisms in genes that control endogenous estrogen biosynthesis. We report findings from the first study in Mexican women examining associations between female with breast cancer and polymorphisms CYP19 (TTTA repeated polymorphism).
 Methods 
 We conducted a study among 180 healthy women and 70 women with breast cancer underwent hormone therapy with aromatase inhibitor. DNA and questionnaire data was obtained. Tandem repeated (TTTA)n polymorphism in CYP19 gene was determined by PCR followed by electrophoresis on denaturalizing acrilamide gel stained with silver nitrate. Differences were visualized with Gel-Doc BioRad. Estrone, estradiol and FSH levels were measured by RIA and IRMA. We used likelihood-based statistical methods to examine allelic associations.
 Results:
 250 women (age 55 ± 12 years) were included. BMI was 30 ± 7.1 Kg/m2. We found a distribution of different CYP19 allele frequencies. In healthy women the allele frequencies with 6 (32.7 %) and 7 (21.6 %) tandem repetitions were the most frequent, in women with breast cancer the alleles with 6(29%) and 10(26%) tandem repeated were the most frequent. A relationship between hormonal levels and number of (TTTA) repeated was not found. Anastrozol reduced significantly estrona and estradiol. Surpriseling we found in a patients with 10 or more (TTTA)n repeated an association with a mayor tumoral activity (p=0.04).
 Conclusion 
 This study indicates that status of CYP19 >10 TTTA repeated might be related to increased breast cancer risk and with the clinical response (aromatase inhibitor). Because of this is the first study to report an association between CYP19 >10 TTTA repeated and treatment hormonal response in breast cancer.
Citation Information: Cancer Res 2009;69(2 Suppl):Abstract nr 3033.
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Macedo S, Bello Y, Silva A, Siqueira C, Siqueira S, Brito L. Effects of simvastatin in prevention of vasospasm in nontraumatic subarachnoid hemorrhage: preliminary data. Crit Care 2009. [PMCID: PMC4083989 DOI: 10.1186/cc7267] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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305
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Martins A, Domingues I, Pedrosa R, Sousa V, Marques J, Silva A, Curral R, Torres AR. Compared Diagnostic Stability Between Mood Disorders and Psychotic Disorders in a Day-care Psychiatric Unit. Eur Psychiatry 2009. [DOI: 10.1016/s0924-9338(09)70954-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Psychiatric diagnosis depends more from the experts' opinion than from the biological basis of the diseases. Therefore the lack of diagnostic stability among the psychiatric practice is not a rare situation. This usually results in increased costs in treatment and sometimes in worst outcome for the patient who is misdiagnosed at the onset of the illness.The authors evaluated diagnostic stability among a population of 302 patients receiving psychiatric treatment in a day-care unit of a central hospital between January/2005 and June/2008. The study compared diagnostic stability of 146 patients diagnosed as mood disorder with diagnostic stability of 83 patients diagnosed as psychotic disorder.There was high diagnostic stability either for mood disorders as for psychotic disorders. This fact provides the chance of planning more accurate treatment strategies and better outcome.
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306
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Bonotto D, Bueno T, Tessari B, Silva A. The natural radioactivity in water by gross alpha and beta measurements. RADIAT MEAS 2009. [DOI: 10.1016/j.radmeas.2008.10.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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307
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Silveira C, Norton A, Martins A, Domingues I, Moreira R, Timóteo S, Silva A. Diagnostic Stability of Psychotic Disorders: A Retrospective Study. Eur Psychiatry 2009. [DOI: 10.1016/s0924-9338(09)71412-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background:An essential condition to validate a diagnosis is its stability over time. Since there are no biological markers for psychiatric disorders, the diagnosis relies on clinical expertise, with several consequences in treatment planning, disease burden and disability, affecting outcome and public health.Objectives:The aims of this study were:1.the assessment of long term stability of the diagnosis of psychotic disorders,2.its implications in patient treatment, and3.the evaluation of eventual predictors of diagnosis stability.Methods:This was a retrospective study carried out in the Department of Psychiatry of a large University Hospital (Hospital S. João, Porto, Portugal). Patients enrolled were admitted in the inpatient unit from 2000 to 2003 (n=190, 12.41% of 1531 patients admitted), experienced a first psychotic episode, and fulfilled criteria for one of the following diagnosis: schizophrenia, schizoaffective disorder, bipolar disorder, drug induced psychosis, acute and transient psychotic disorders, schizophreniform disorder and psychosis NOS (ICD-10 classification). the diagnoses were extracted from clinical records, and reassessed five years after the initial diagnosis. the analysis focuses on diagnostic agreement over time; clinical and demographic variables were also collected and putative associations with diagnostic shift considered.Results:The study is now under statistic evaluation.
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308
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Silva A, Andersen M, De Mello M, Bittencourt L, Peruzzo D, Tufik S. Gender and age differences in polysomnography findings and sleep complaints of patients referred to a sleep laboratory. Braz J Med Biol Res 2008; 41:1067-75. [DOI: 10.1590/s0100-879x2008001200005] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2007] [Accepted: 11/28/2008] [Indexed: 11/21/2022] Open
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309
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Patra SK, Rizzi F, Silva A, Rugina DO, Bettuzzi S. Molecular targets of (-)-epigallocatechin-3-gallate (EGCG): specificity and interaction with membrane lipid rafts. JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY : AN OFFICIAL JOURNAL OF THE POLISH PHYSIOLOGICAL SOCIETY 2008; 59 Suppl 9:217-235. [PMID: 19261982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 11/05/2008] [Accepted: 12/20/2008] [Indexed: 05/27/2023]
Abstract
Proteomic studies on anticancer activity of Green Tea Catechins (specifically EGCG) are suggesting a large set of protein targets that may directly interact with EGCG and alter the physiology of diseased cells, including cancer. Of notice, benign cells are usually left untouched. Lipid rafts have been recently recognized as signal processing hubs and suggested to be involved in drug uptake by means of endocytosis. These findings are suggesting new insights on the molecular mechanisms of anticancer drugs action. In the membrane, EGCG is hijacked by the laminin receptor (LamR), a lipid raft protein. Similar to aplidin and edelfosin, EGCG alters membrane domains composition also preventing EGF binding to EGFR, imerization of EGFR and relocation of phosphorylated EGFR to lipid rafts. In vitro studies have recently shown that EGCG also binds both DNA and RNA in GpC-rich regions. This event may importantly affect genes function. Moreover, EGCG was shown to inhibit telomerase, topoisomerase II and DNA methyltransferase 1 (DNMT1), thus ultimately affecting chromatin maintenance and remodeling. But another important alternative pathway besides interaction with specific proteins may play an important role in EGCG action: direct targeting of bioactive membrane platforms, lipid rafts. Structural alteration of the platforms deeply impact (and often inactivates) important pathways involving MAP kinases. The key issue is that, important and specific differences in lipid rafts composition have been found in transformed versus benign cells and apoptotic versus non-apoptotic cells. We suggest here that the anticancer activity of Green Tea Catechins against different kind of cancers may find an explanation in direct targeting of lipid rafts by EGCG.
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310
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Silva A. [SY2.1]: Molecular and cellular cognition: unraveling mechanisms and finding cures for learning disabilities. Int J Dev Neurosci 2008. [DOI: 10.1016/j.ijdevneu.2008.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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311
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Silva A, Andersen ML, Tufik S. Sleep pattern in an experimental model of osteoarthritis. Pain 2008; 140:446-455. [DOI: 10.1016/j.pain.2008.09.025] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2008] [Revised: 09/16/2008] [Accepted: 09/19/2008] [Indexed: 10/21/2022]
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312
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Vernal R, Leon R, Herrera D, Garcia-Sanz JA, Silva A, Sanz M. Variability in the response of human dendritic cells stimulated withPorphyromonas gingivalisorAggregatibacter actinomycetemcomitans. J Periodontal Res 2008; 43:689-97. [DOI: 10.1111/j.1600-0765.2007.01073.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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313
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Armesilla-Diaz A, Bragado P, Del Valle I, Cuevas E, Lazaro I, Martin C, Cigudosa JC, Silva A. p53 regulates the self-renewal and differentiation of neural precursors. Neuroscience 2008; 158:1378-89. [PMID: 19038313 DOI: 10.1016/j.neuroscience.2008.10.052] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2008] [Revised: 10/22/2008] [Accepted: 10/23/2008] [Indexed: 12/25/2022]
Abstract
During embryo neurogenesis, neurons that originate from stem cells located in the forebrain subventricular zone (SVZ) continuously migrate to the olfactory bulb (OB). However, other authors describe the occurrence of resident stem cells in the OB. In the present work we report that the absence of tumor suppressor protein p53 increases the number of neurosphere-forming cells and the proliferation of stem cells derived from 13.5-day embryo OB. Interestingly, differentiation of p53 knockout-derived neurospheres was biased toward neuronal precursors, suggesting a role for p53 in the differentiation process. Moreover, we demonstrate the relevance of p53 in maintaining chromosomal stability in response to genotoxic insult. Finally, our data show that neurosphere stem cells are highly resistant to long-term epidermal growth factor (EGF) and basic fibroblast growth factor (bFGF) deprivation in a p53-independent fashion, and they preserve their differentiation potential. Thus, these data demonstrate that p53 controls the proliferation, chromosomal stability and differentiation pattern of embryonic mouse olfactory bulb stem cells.
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314
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Oliveira KA, Oliveira LS, Dias CCA, Silva A, Almeida MR, Almada G, Bouyer DH, Galvão MAM, Mafra C. Molecular identification of Rickettsia felis in ticks and fleas from an endemic area for Brazilian Spotted Fever. Mem Inst Oswaldo Cruz 2008; 103:191-4. [PMID: 18425272 DOI: 10.1590/s0074-02762008000200011] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2007] [Accepted: 03/20/2008] [Indexed: 11/21/2022] Open
Abstract
Rickettsioses are arthropod-borne diseases caused by parasites from the Order Rickettsiales. The most prevalent rickettsial disease in Brazil is Brazilian Spotted Fever (BSF). This work intends the molecular detection of those agents in ectoparasites from an endemic area of BSF in the state of Espírito Santo. A total of 502 ectoparasites, among them Amblyomma cajennense, Amblyomma dubitatum (A. cooperi), Riphicephalus sanguineus, Anocentor nitens and Ctenocephalides felis, was collected from domestic animals and the environment and separated in 152 lots according to the origin. Rickettsia sp. was detected in pools of all collected species by amplification of 17 kDa protein-encoding gene fragments. The products of PCR amplification of three samples were sequenced, and Rickettsia felis was identified in R. sanguineus and C. felis. These results confirm the presence of Rickettsia felis in areas previously known as endemic for BSF, disease caused by Rickettsia rickettsii. Moreover, they show the needing of further studies for deeper knowledge of R. felis-spotted fever epidemiology and differentiation of these diseases in Brazil.
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315
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Peixoto P, Ministro P, Sadio A, Castanheira A, Cancela E, Araújo R, Silva A, Caldas A. Embolic complications associated with endoscopic injection of cyanoacrylate for bleeding duodenal ulcer. Endoscopy 2008; 40 Suppl 2:E126. [PMID: 18633868 DOI: 10.1055/s-2007-995695] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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316
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Katulanda P, Shine B, Katulanda GW, Silva A, Asfir EL, Sheriff R, Somasundaram N, Long AE, Bingley PJ, McCarthy MI, Clark A, Matthews DR. Diabetes mellitus among young adults in Sri Lanka--role of GAD antibodies in classification and treatment: the Sri Lanka Young Diabetes study. Diabetologia 2008; 51:1368-74. [PMID: 18528678 DOI: 10.1007/s00125-008-1052-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2008] [Accepted: 04/29/2008] [Indexed: 01/15/2023]
Abstract
AIMS/HYPOTHESIS Diabetes mellitus is increasing among young adult South Asians. The aim of this study was to determine the prevalence and phenotypic characteristics of diabetes subtypes based on GAD65 autoantibody (GADA) status in those with young adult-onset diabetes in Sri Lanka. METHODS Clinical, metabolic and GADA data were available for 992 consecutively recruited individuals with diabetes aged < or =45 years (age at diagnosis 16-40 years). Participants were classified according to the following definitions: type 1 diabetes, insulin-dependent <6 months from diagnosis; latent autoimmune diabetes in adults (LADA), GADA-positive, age > or =30 years and insulin-independent > or =6 months from diagnosis; type 2 diabetes, GADA-negative and insulin-independent > or =6 months from diagnosis. RESULTS The median (interquartile range) age at diagnosis and diabetes duration were 33.0 (29.0-36.1) and 4.0 (1.1-7.1) years, respectively; 42.1% were male. GADA positivity was seen in 5.4% of participants (n = 54) and GADA levels negatively correlated with age at diagnosis (p < 0.0001), BMI (p < 0.0001) and time to insulin requirement (p = 0.006). Type 1 diabetes, type 2 diabetes and LADA were present in 7.0%, 89.7% and 2.6%, respectively. The remaining 0.7% of the participants were GADA-positive, insulin independent > or =6 months from diagnosis and were diagnosed at age <30 years. The metabolic syndrome and homeostasis model assessment of beta cell function (HOMA %B) were lowest in GADA-positive type 1 diabetes and increased progressively in latent autoimmune diabetes, GADA-negative type 1 diabetes and type 2 diabetes. Among those requiring insulin, 69.2% had fasting C-peptide levels in the lowest quartile, whereas only 19.5% were GADA-positive (p < 0.0001). CONCLUSIONS/INTERPRETATION The prevalence of GADA-positive autoimmune diabetes is low among individuals with young adult-onset diabetes in Sri Lanka. Young-onset diabetic phenotypes appear as a continuum from autoimmune type 1 diabetes to type 2 diabetes.
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317
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Andersen ML, Antunes IB, Silva A, Alvarenga TAF, Baracat EC, Tufik S. Effects of sleep loss on sleep architecture in Wistar rats: gender-specific rebound sleep. Prog Neuropsychopharmacol Biol Psychiatry 2008; 32:975-83. [PMID: 18276051 DOI: 10.1016/j.pnpbp.2008.01.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2007] [Revised: 01/08/2008] [Accepted: 01/08/2008] [Indexed: 11/30/2022]
Abstract
This study was designed to examine the influence of gender on sleep rebound architecture after a 4-day paradoxical sleep deprivation period. After a 5-day baseline sleep recording, both male and female rats in different phases of the estrus cycle were submitted to paradoxical sleep deprivation for 96 h. After this period, the sleep rebound recording was evaluated for 5 days (one estrus cycle). The findings revealed that after paradoxical sleep deprivation, sleep efficiency and paradoxical sleep returned to baseline values on the second day of the light period, for all except the proestrus group. During the dark rebound period, only the female groups presented increased sleep efficiency on the first day. Paradoxical sleep returned to baseline values on the third day, except for males and the cycling females submitted to paradoxical sleep deprivation in the diestrus phase, whose baseline values returned to normal on the second day of rebound period. Thus, the females and males displayed distinct patterns as a result of sleep disruption.
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318
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Cardoso BA, Gírio A, Henriques C, Martins LR, Santos C, Silva A, Barata JT. Aberrant signaling in T-cell acute lymphoblastic leukemia: biological and therapeutic implications. ACTA ACUST UNITED AC 2008; 41:344-50. [PMID: 18488097 DOI: 10.1590/s0100-879x2008005000016] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2007] [Accepted: 03/31/2008] [Indexed: 02/14/2023]
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is a biologically heterogeneous disease with respect to phenotype, gene expression profile and activation of particular intracellular signaling pathways. Despite very significant improvements, current therapeutic regimens still fail to cure a portion of the patients and frequently implicate the use of aggressive protocols with long-term side effects. In this review, we focused on how deregulation of critical signaling pathways, in particular Notch, PI3K/Akt, MAPK, Jak/STAT and TGF-beta, may contribute to T-ALL. Identifying the alterations that affect intracellular pathways that regulate cell cycle and apoptosis is essential to understanding the biology of this malignancy, to define more effective markers for the correct stratification of patients into appropriate therapeutic regimens and to identify novel targets for the development of specific, less detrimental therapies for T-ALL.
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319
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Lança L, Silva A. Evaluation of exposure index (IgM) in orthopaedic radiography. RADIATION PROTECTION DOSIMETRY 2008; 129:112-118. [PMID: 18430719 DOI: 10.1093/rpd/ncn143] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The exposure index (lgM) obtained from a radiographic image may be a useful feedback indicator to the radiographer about the appropriate exposure level in routine clinical practice. This study aims to evaluate lgM in orthopaedic radiography performed in the standard clinical environment. We analysed the lgM of 267 exposures performed with an AGFA CR system. The mean value of lgM in our sample is 2.14. A significant difference (P = 0.000 < or =0.05) from 1.96 lgM reference is shown. Data show that 72% of exposures are above the 1.96 lgM and 42% are above the limit of 2.26. Median values of lgM are above 1.96 and below 2.26 for Speed class (SC) 200 (2.16) and SC400 (2.13). The interquartile range is lower in SC400 than in SC200. Data seem to indicate that lgM values are above the manufacturer's reference of 1.96. Departmental exposure charts should be optimised to reduce the dose given to patients.
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320
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Lança L, Silva A, Alves E, Serranheira F, Correia M. Evaluation of exposure parameters in plain radiography: a comparative study with European guidelines. RADIATION PROTECTION DOSIMETRY 2008; 129:316-320. [PMID: 18430717 DOI: 10.1093/rpd/ncn144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Typical distribution of exposure parameters in plain radiography is unknown in Portugal. This study aims to identify exposure parameters that are being used in plain radiography in the Lisbon area and to compare the collected data with European references [Commission of European Communities (CEC) guidelines]. The results show that in four examinations (skull, chest, lumbar spine and pelvis), there is a strong tendency of using exposure times above the European recommendation. The X-ray tube potential values (in kV) are below the recommended values from CEC guidelines. This study shows that at a local level (Lisbon region), radiographic practice does not comply with CEC guidelines concerning exposure techniques. Further national/local studies are recommended with the objective to improve exposure optimisation and technical procedures in plain radiography. This study also suggests the need to establish national/local diagnostic reference levels and to proceed to effective measurements for exposure optimisation.
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321
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Andrés S, Silva A, Soares-Pereira A, Martins C, Bruno-Soares A, Murray I. The use of visible and near infrared reflectance spectroscopy to predict beef M. longissimus thoracis et lumborum quality attributes. Meat Sci 2008; 78:217-24. [DOI: 10.1016/j.meatsci.2007.06.019] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2006] [Revised: 05/17/2007] [Accepted: 06/11/2007] [Indexed: 10/23/2022]
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322
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Oliveira R, Pinto R, Silva J, Silva C, Silva A, Cruz F. SHORT TERM ASSESSMENT OF TVT-SECUR™ FOR TREATMENT OF FEMALE STRESS URINARY INCONTINENCE. A SINGLE- INSTITUTION EXPERIENCE. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/s1569-9056(08)60205-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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323
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Vicente A, Barros R, Florinda A, Silva A, Hanscheid T. High rates of fluoroquinolone-resistant Campylobacter in Portugal--need for surveillance. Euro Surveill 2008; 13:8031. [PMID: 18445426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
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324
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Vicente A, Barros R, Florinda A, Silva A, Hanscheid T. High rates of fluoroquinolone-resistant Campylobacter in Portugal - need for surveillance. Euro Surveill 2008. [DOI: 10.2807/ese.13.06.08031-en] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Binary file ES_Abstracts_Final_ECDC.txt matches
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Almeida B, Silva A, Mesquita A, Sampaio-Marques B, Rodrigues F, Ludovico P. Drug-induced apoptosis in yeast. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2008; 1783:1436-48. [PMID: 18252203 DOI: 10.1016/j.bbamcr.2008.01.005] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2007] [Revised: 12/21/2007] [Accepted: 01/07/2008] [Indexed: 01/04/2023]
Abstract
In order to alter the impact of diseases on human society, drug development has been one of the most invested research fields. Nowadays, cancer and infectious diseases are leading targets for the design of effective drugs, in which the primary mechanism of action relies on the modulation of programmed cell death (PCD). Due to the high degree of conservation of basic cellular processes between yeast and higher eukaryotes, and to the existence of an ancestral PCD machinery in yeast, yeasts are an attractive tool for the study of affected pathways that give insights into the mode of action of both antitumour and antifungal drugs. Therefore, we covered some of the leading reports on drug-induced apoptosis in yeast, revealing that in common with mammalian cells, antitumour drugs induce apoptosis through reactive oxygen species (ROS) generation and altered mitochondrial functions. The evidence presented suggests that yeasts may be a powerful model for the screening/development of PCD-directed drugs, overcoming the problem of cellular specificity in the design of antitumour drugs, but also enabling the design of efficient antifungal drugs, targeted to fungal-specific apoptotic regulators that do not have major consequences for human cells.
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