51
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Gomes H, Pinto D, Sequeira S, Santos L, Marques A, Carreiro da Costa F. Prevalence of barriers for physical activity in Portuguese adolescents. Br J Sports Med 2011. [DOI: 10.1136/bjsports-2011-090606.61] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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52
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Drucker AM, Pinto D, Teh E, Williams J, Rayson D, Douglas S. A feasibility study of gene expression analysis from enriched circulating tumor cells (CTC) in metastatic breast cancer (MBC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e21156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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53
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Pinto D, Almeida V, Almeida Santos M, Chambel L. Resuscitation of Escherichia coli VBNC cells depends on a variety of environmental or chemical stimuli. J Appl Microbiol 2011; 110:1601-11. [DOI: 10.1111/j.1365-2672.2011.05016.x] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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54
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Durante-Mangoni E, Ragone E, Pinto D, Iossa D, Covino F, Maiello C, Utili R. Outcome of Treatment With Pegylated Interferon and Ribavirin in Heart Transplant Recipients With Chronic Hepatitis C. Transplant Proc 2011; 43:299-303. [DOI: 10.1016/j.transproceed.2010.09.096] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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55
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Durante-Mangoni E, Casillo R, Pinto D, Caianiello C, Albisinni R, Caprioli V, Maiello C, Utili R. Heart Transplantation During Active Infective Endocarditis: Case Report and Review of the Literature. Transplant Proc 2011; 43:304-6. [DOI: 10.1016/j.transproceed.2010.09.095] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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56
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Webber C, Marshall C, Pinto D, Scherer S, Ponting C. [P2.62]: 46% of individuals with ASD that harbour de novo CNVs have at least one de novo CNV that overlaps a gene associated with synaptic signalling. Int J Dev Neurosci 2010. [DOI: 10.1016/j.ijdevneu.2010.07.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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57
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Carter MT, Nikkel SM, Fernandez BA, Marshall CR, Noor A, Lionel AC, Prasad A, Pinto D, Joseph-George AM, Noakes C, Fairbrother-Davies C, Roberts W, Vincent J, Weksberg R, Scherer SW. Hemizygous deletions on chromosome 1p21.3 involving the DPYD gene in individuals with autism spectrum disorder. Clin Genet 2010; 80:435-43. [PMID: 21114665 DOI: 10.1111/j.1399-0004.2010.01578.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We describe the identification and clinical presentation of four individuals from three unrelated families with hemizygous deletions involving the DPYD gene at chromosome 1p21.3. DPYD encodes dihydropyrimidine dehydrogenase, which is the initial and rate-limiting enzyme in the catabolism of pyrimidine bases. All four individuals described met diagnostic criteria for autism spectrum disorder with severe speech delay. Patient 1's deletion was originally reported in 2008, and more detailed clinical information is provided. Subsequently, this male individual was found to have a missense mutation in the X-linked PTCHD1 autism susceptibility gene, which may also contribute to the phenotype. Patients 2 and 3 are siblings with a novel deletion encompassing the DPYD gene. In their mother, the genomic region deleted from chromosome 1p21.3 was inserted into chromosome 10. A fourth proband had a novel 10-kb intragenic deletion of exon 6 of the DPYD gene detected on a higher resolution microarray. Our study suggests that hemizygous deletions involving the DPYD locus present with variable phenotypes which can include speech delay and autistic features, and may also be influenced by additional mutations in other genes, issues which need to be considered in genetic counseling.
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58
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Sundaram M, Pinto D, Majumder B, Ameer K, Majumder P. 120 Primary tumor derived preclinical model mimics human colon cancer: a novel platform to study cancer biology and to evaluate anti-cancer drugs. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71825-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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59
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Sousa H, Santos A, Breda E, Catarino R, Pinto D, Moutinho J, Medeiros R. 105 Role of IL-1RN VNTR polymorphism in host immune susceptibility to viral associated neoplasias. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)70913-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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60
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Lima L, Pereira D, Gomes A, Pinto D, Medeiros R. 108 Association between FAS-670A/G polymorphism and ovarian cancer development. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)70916-2] [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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61
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de Kovel CGF, Pinto D, Tauer U, Lorenz S, Muhle H, Leu C, Neubauer BA, Hempelmann A, Callenbach PMC, Scheffer IE, Berkovic SF, Rudolf G, Striano P, Siren A, Baykan B, Sander T, Lindhout D, Kasteleijn-Nolst Trenité DG, Stephani U, Koeleman BPC. Whole-genome linkage scan for epilepsy-related photosensitivity: a mega-analysis. Epilepsy Res 2010; 89:286-94. [PMID: 20153606 DOI: 10.1016/j.eplepsyres.2010.01.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2009] [Revised: 12/22/2009] [Accepted: 01/23/2010] [Indexed: 10/19/2022]
Abstract
Photoparoxysmal response (PPR) is considered to be a risk factor for idiopathic generalised epilepsy (IGE) and it has a strong genetic basis. Two genome-wide linkage studies have been published before and they identified loci for PPR at 6p21, 7q32, 13q13, 13q31 and 16p13. Here we combine these studies, augmented with additional families, in a mega-analysis of 100 families. Non-parametric linkage analysis identified three suggestive peaks for photosensitivity, two of which are novel (5q35.3 and 8q21.13) and one has been found before (16p13.3). We found no evidence for linkage at four previously detected loci (6p21, 7q32, 13q13 and 13q31). Our results suggest that the different family data sets are not linked to a shared locus. Detailed analysis showed that the peak at 16p13 was mainly supported by a single subset of families, while the peaks at 5q35 and 8q21 had weak support from multiple subsets. Family studies clearly support the role of PPR as a risk factor for IGE. This mega-analysis shows that distinct loci seem to be linked to subsets of PPR-positive families that may differ in subtle clinical phenotypes or geographic origin. Further linkage studies of PPR should therefore include in-depth phenotyping to make appropriate subsets and increase genetic homogeneity.
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Napoletano C, Rughetti A, Landi R, Pinto D, Bellati F, Rahimi H, Spinelli GP, Pauselli S, Sale P, Dolo V, De Lorenzo F, Tomao F, Benedetti-Panici P, Frati L, Nuti M. Immunogenicity of allo-vesicle carrying ERBB2 tumor antigen for dendritic cell-based anti-tumor immunotherapy. Int J Immunopathol Pharmacol 2009; 22:647-58. [PMID: 19822081 DOI: 10.1177/039463200902200310] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Dendritic cells (DCs) are able to orchestrate innate and acquired immunity and can activate and sustain a long-lasting anti-tumor immune response in vivo when used as anti-tumor cell therapy. The selection of the antigen and the choice of its formulation are key points in designing anti-cancer DC-based vaccines. Cell released vesicles/exosomes have been shown to transfer antigens, HLAI/peptide complexes and co-stimulatory molecules to recipient cells. In this study we describe the generation of an allogenic microvesicle cell factory in which the expression of a specific tumor antigen was combined to the expression of co-stimulatory and allogeneic molecules. The DG75 lymphoblastoid cell line was selected as microvesicle producer and transfected with ErbB2, as tumor antigen prototype. The shed microvesicles transferred antigenic components to recipient DCs, increasing their immunogenicity. DC pulsing resulted in cross-presentation of ErbB2 both in HLAI and HLAII compartments, and ErbB2-specific CD8+ T cells from cancer patients were activated by DCs pulsed with vesicle-bound ErbB2. The microvesicle cell factory proposed may represent a source of cell free immunogen to be used for DC-based cancer therapy.
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63
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Pereira PD, Lopes CC, Matos AJF, Pinto D, Gärtner F, Lopes C, Medeiros R. Influence of Catechol-O-Methyltransferase (COMT) Genotypes on the Prognosis of Canine Mammary Tumors. Vet Pathol 2009; 46:1270-4. [DOI: 10.1354/vp.08-vp-0298-d-fl] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Catechol-O-methyltransferase (COMT) is an important enzyme involved in inactivation of catechol estrogens, which are metabolites with carcinogenic properties. Some investigations in human breast cancer associate a genetic polymorphism in the COMT gene (COMT val158met) with an increased risk and poor clinical progression of the disease. In dogs, there are 2 recognized single nucleotide polymorphisms in the COMT gene (COMTG216A and COMTG482A); however, their influence on the outcome of mammary neoplasms has never been investigated. The purpose of this study is to investigate the influence of COMT in the clinical progression of canine mammary tumors, namely in recurrence, metastasis and survival by testing 2 SNPs (G216A and G482A), and 2 genotypes of the COMT gene. A case series was conducted analyzing genomic DNA samples by polymerase chain reaction-restriction fragment length polymorphism from 80 bitches with mammary tumors. Animals were submitted to an active follow-up study for a period of 24 months after surgery. We observed that bitches carrying both genetic variations simultaneously are more likely to develop recurrence of mammary lesions. Our results demonstrate a possible role for COMT genotypes in the outcome of mammary neoplasms in the dog. Identifying a genetic factor predictive of recurrence may be useful in selecting the most effective surgical approach for canine mammary neoplasms.
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64
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Kacem N, Hentz S, Pinto D, Reig B, Nguyen V. Nonlinear dynamics of nanomechanical beam resonators: improving the performance of NEMS-based sensors. NANOTECHNOLOGY 2009; 20:275501. [PMID: 19528678 DOI: 10.1088/0957-4484/20/27/275501] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In order to compensate for the loss of performance when scaling resonant sensors down to NEMS, it proves extremely useful to study the behavior of resonators up to very high displacements and hence high nonlinearities. This work describes a comprehensive nonlinear multiphysics model based on the Euler-Bernoulli equation which includes both mechanical and electrostatic nonlinearities valid up to displacements comparable to the gap in the case of an electrostatically actuated doubly clamped beam. Moreover, the model takes into account the fringing field effects, significant for thin resonators. The model has been compared to both numerical integrations and electrical measurements of devices fabricated on 200 mm SOI wafers; it shows very good agreement with both. An important contribution of this work is the provision for closed-form expressions of the critical amplitude and the pull-in domain initiation amplitude including all nonlinearities. This model allows designers to cancel out nonlinearities by tuning some design parameters and thus gives the possibility to drive the resonator beyond its critical amplitude. Consequently, the sensor performance can be enhanced to the maximum below the pull-in instability, while keeping a linear behavior.
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Durante-Mangoni E, Pinto D, Iossa D, Caianiello C, Molaro R, Casillo R, Crispi F, Ragone E, Dialetto G, Utili R. 077 CLINICAL SIGNIFICANCE AND PROGNOSTIC VALUE OF N-TERMINAL PRO-B-TYPE NATRIURETIC PEPTIDE (NT-pro-BNP) IN INFECTIVE ENDOCARDITIS: A PRELIMINARY STUDY. Int J Antimicrob Agents 2009. [DOI: 10.1016/s0924-8579(09)70096-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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66
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Pasic I, Shlien A, Novokmet A, Zhang C, Tabori U, Pinto D, Scherer SW, Malkin D. CONTRIBUTION OF DNA COPY-NUMBER VARIATION (CNV) TO CANCER SUSCEPTIBILITY AND LARGE-SCALE GENOME ALTERATIONS IN OSTEOSARCOMA (OS). CLIN INVEST MED 2008. [DOI: 10.25011/cim.v31i4.4821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Introduction: OS, a common Li-Fraumeni syndrome (LFS)-associated neoplasm, is a common bone malignancy of children and adolescents. Sporadic OS is also characterized by young age of onset and high genomic instability, suggesting a genetic contribution to disease. This study examined the contribution of novel DNA structural variation elements, CNVs, to OS susceptibility. Given our finding of excessive constitutional DNA CNV in LFS patients, which often coincide with cancer-related genes, we hypothesized that constitutional CNV may also provide clues about the aetiology of LFS-related sporadic neoplasms like OS.
Methods: CNV in blood DNA of 26 patients with sporadic OS was compared to that of 263 normal control samples from the International HapMap project, as well as 62 local controls. Analysis was performed on DNA hybridized to Affymetrix genome-wide human SNP array 6.0 by Partek Genomic Suite.
Results: There was no detectable difference in average number of CNVs, CNV length, and total structural variation (product of average CNV number and length) between individuals with OS and controls. While this data is preliminary (small sample size), it argues against the presence of constitutional genomic instability in individuals with sporadic OS.
Conclusion: We found that the majority of tumours from patients with sporadic OS show CN loss at chr3q13.31, raising the possibility that chr3q13.31 may represent a “driver” region in OS aetiology. In at least one OS tumour, which displays CN loss at chr3q13.31, we demonstrate decreased expression of a known tumour suppressor gene located at chr3q13.31. We are investigating the role ofchr3q13.31 in development of OS.
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67
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Ribeiro R, Teixeira A, Pinto D, Pereira D, Medeiros R. Functional genetic polymorphisms in the leptin pathway are associated with progression free interval and overall survival in ovarian cancer patients. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)71568-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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68
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Dias Pereira P, Lopes CC, Matos AJF, Pinto D, Gärtner F, Lopes C, Medeiros R. Estrogens metabolism associated with polymorphisms: influence of COMT G482a genotype on age at onset of canine mammary tumors. Vet Pathol 2008; 45:124-30. [PMID: 18424824 DOI: 10.1354/vp.45-2-124] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Catechol-O-methyltransferase (COMT) is an important enzyme participating in inactivation of carcinogenic oestrogen metabolites. In humans there is a single nucleotide polymorphism in COMT gene (COMT val158met) that has been associated with an increased risk for developing breast cancer. In dogs, there is a single nucleotide polymorphism in COMT gene (G482A), but its relation with mammary carcinogenesis has never been investigated. The aim of this study was to focus on the evaluation of such polymorphism as a risk factor for the development of mammary tumors in bitches and on the analysis of its relationship with some clinicopathologic features (dog's age and weight, number and histologic type of the lesions, lymph node metastasis) of canine mammary neoplasms. A case-control study was conducted analyzing 90 bitches with mammary tumors and 84 bitches without evidence of neoplastic disease. The COMT G482A polymorphism was analyzed by PCR-RFLP. We found a protective effect of the polymorphism in age of onset of mammary tumors, although we could not establish a significant association between COMT genotype and other clinicopathologic parameters nor with mammary tumor risk overall. Animals carrying the variant allele have a threefold likelihood of developing mammary tumors after 9 years of age in comparison with noncarriers. The Kaplan-Meier method revealed significant differences in the waiting time for onset of malignant disease for A allele carrier (12.46 years) and noncarrier (11.13 years) animals. This investigation constitutes the first case-control study designed to assess the relationship between polymorphic genes and mammary tumor risk in dogs. Our results point to the combined effect of COMT genotype with other genetic and/or environmental risk factors as important key factors for mammary tumor etiopathogenesis.
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69
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Pontes F, Pontes H, Adachi P, Rodini C, Almeida D, Pinto D. Gingival and bone necrosis caused by accidental sodium hypochlorite injection instead of anaesthetic solution. Int Endod J 2008; 41:267-70. [DOI: 10.1111/j.1365-2591.2007.01340.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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70
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Oliveira S, Sousa H, Santos A, Pinto D, Pinto-Correia A, Fontoura D, Moutinho J, Medeiros R. The p53 R72P polymorphism does not influence cervical cancer development in a portuguese population: A study in exfoliated cervical cells. J Med Virol 2008; 80:424-9. [DOI: 10.1002/jmv.21103] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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71
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Pinto D, Marshall C, Feuk L, Scherer SW. Copy-number variation in control population cohorts. Hum Mol Genet 2007. [DOI: 10.1093/hmg/ddm321] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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72
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Sousa H, Breda E, Catarino R, Pinto D, Canedo P, Machado J, Medeiros R. 341 POSTER –308G>A TNF-alpha polymorphism is a genetic susceptibility marker for nasopharyngeal carcinoma development. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)70359-2] [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] Open
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73
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Pinto D, Faustino C, Ferreira P, Teixeira A, Pinto-Correia A, Sousa H, Dinis-Ribeiro M, Fragoso M, Medeiros R. 326 POSTER HER2 polymorphism is associated with gastric cancer risk. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)70344-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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74
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Rodrigues C, Pinto D, Catarino R, Pereira D, Moutinho J, Medeiros R. 351 POSTER Genetic background and cervical development: the influence of cytochromes P450IID6 genotypes. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)70369-5] [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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75
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Pinto Correia A, Pinto D, Pereira D, Rodrigues H, Abreu de Sousa J, Sousa H, Sousa B, Sousa S, Lopes C, Medeiros R. 362 POSTER Pepsinogen C gene polymorphism and breast cancer: Influence on the overall survival. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)70380-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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