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Sobral D, Fernandes AF, Mashayekhi Sardoo A, Bernardes M, Pinto P, Santos H, Gomes JL, Tavares-Costa J, Silva J, Madruga Dias J, Bernardo A, Gaillard J, Armengaud J, Benes V, Pinheiro Torres R, Domingues L, Maia S, Branco J, Coelho AV, Pimentel dos Santos F. POS0359 MOLECULAR PROFILING OF RADIOGRAPHIC AXIAL SPONDYLOARTHRITIS PATIENTS REVEALS AN ASSOCIATION BETWEEN INNATE AND ADAPTIVE CELL POPULATIONS AND THERAPEUTIC RESPONSE TO ADALIMUMAB. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:The response to treatment in spondylarthropaties is heterogeneous, due to factors yet to be better described. For that reason, it is important to find tools that might help clinicians to decide what is the best available therapeutic option for each patient.Objectives:The goal of this study is to use comprehensive molecular profiling to characterize clinical response to therapy in a real-world setting. Specifically, to identify molecular biomarkers differentiating good responders and non-responders to TNF inhibitors (TNFi) treatment, using adalimumab, in radiographic axial spondyloarthritis | ankylosing spondylitis (r-axSpA|AS) patients context.Methods:Whole-blood mRNA and plasma proteins were measured in a cohort of biologic naïve r-axSpA|AS patients (n = 35) from the Bioefficacy study (Biomarkers identification of anti-TNF alpha agent efficacy in AS patients using RNA sequencing and mass spectrometry), pre and post (14 weeks) TNFi treatment using adalimumab. Response to treatment was categorized according to ASAS20. Results of differential expression analysis were used to identify the most enriched pathways and in predictive models to distinguish responses to TNFi.Results:A treatment-related signature, independent of the type of response, suggests a reduction in inflammatory disease activity. We found genes and proteins robustly differentially expressed between baseline and week 14 in responders, including the GWAS AS-associated genes TNFRSF1A, FCGR2A, TYK2, TBKBP1, IL1R1, IL6R, ICOSLG, IL7R, HHAT and LTBR. Moreover, CRP and HP proteins showed strong and early decrease in the plasma of AS patients, while a cluster of apolipoproteins (APO1, APO2, APO3) showed an increased expression at week 14. Good responders to TNFi treatment tend to have higher expression of innate immunity genes at baseline, and lower expression of markers associated with adaptive immunity, particularly B-cells. A logistic regression model incorporating ASDAS-CRP, gender and Gene x, the top differentially expressed gene at baseline between responders and non-responders, enabled an accurate prediction of response to adalimumab in our cohort (AUC=0.97).Conclusion:Differences in disease activity and/or innate/adaptive immune cell type composition at baseline may be a major contributor to response to adalimumab in r-axSpA|AS. Alternatively, a model including clinical and gene expression variables could be considered, particularly in patients with mild disease activity.Disclosure of Interests:None declared
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Mashayekhi Sardoo A, Leo P, Santos M, Costa T, Almeida SF, Maia S, Benes V, Brown M, Branco J, Pimentel Dos Santos F. AB0015 IDENTIFICATION OF KEY GENES TO SUPPORT SYSTEMIC LUPUS ERYTHEMATOSUS, RHEUMATOID ARTHRITIS AND ANKYLOSING SPONDYLITIS DIAGNOSIS BY TRANSCRIPTOMIC APPROACH. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.5456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Early diagnosis of inflammatory rheumatic diseases (IRD), as Systemic Lupus Erythematosus (SLE), Rheumatoid Arthritis (RA) and axial Spondyloarthritis (axSpA) represents in our days a major clinical challenge. Increasing evidence has determined that early diagnosis, prompt treatment initiation and early achievement of remission are the best predictors of long-term clinical, functional and radiographic outcomes. Therefore, identification of sensitive biomarkers to support an early diagnosis to enable early therapy is of utmost importance [1,2].Objectives:This study aims to identify novel genes that may improve the current clinical diagnosis approach for early SLE, RA and axSpA.Methods:A cross-sectional study was conducted on 44 participants, 12 with axSpA (according to ASAS criteria), 11 with RA (according to ACR/EULAR criteria for RA), 10 with SLE (according to ACR classification criteria for SLE) and 11 Healthy Controls (HC), gender and age matched. Patients with co-occurrence of other IRD or having received biological therapies were excluded. Peripheral blood samples were collected into PAXgene tubes and stored in -80°C. mRNA profiling by RNA-seq was performed. Unpaired t-tests with multivariate permutation correction were applied to identify differentially expressed genes (DEGs) between patients and HC for each disease and within diseases. Enrichment analysis, Gene ontology (GO) and Kyoto Enrichment of Genes and Genomes (KEGG) analysis were also performed. DEGs that allow to distinguish each disease from HC and between diseases. The top DEGs (axSpA n=2, RA n=2, SLE n=3) identified were confirmed by quantitative RT-PCR.Results:For axSpA, genes involved in negative regulation of cytokines by JAK/STAT pathway and in osteoblast differentiation through STAT3 pathway, were confirmed. In SLE, genes involved in trap for immune complexes in peripheral blood and involved in nucleosome regulation, were also confirmed. Regarding RA, no genes were confirmed.Conclusion:Our work provides new insights into IRD pathogenesis, and discloses new biomarkers, which may be useful as either predictive biomarkers for diagnosis or therapeutic targets to improve IRD approach.Further validation are needed in different cohorts.References:[1]Monti, S. et al. (2015) ‘Rheumatoid arthritis treatment: The earlier the better to prevent joint damage’, RMD Open, 1(Suppl 1), pp. 1–5. doi: 10.1136/rmdopen-2015-000057.[2]Oglesby, A. et al. (2014) ‘Impact of early versus late systemic lupus erythematosus diagnosis on clinical and economic outcomes.’, Applied health economics and health policy, 12(2), pp. 179–90. doi: 10.1007/s40258-014-0085-x.Acknowledgments:To all patients and healthy controls who participated in the studyDisclosure of Interests:Atlas Mashayekhi Sardoo: None declared, Paul Leo: None declared, Mariana Santos: None declared, Tiago Costa: None declared, Sergio Fernandes Almeida: None declared, Sara Maia: None declared, Vladimir Benes: None declared, Mattew Brown Speakers bureau: MSD, Pfizer, Novartis, Jaime Branco Speakers bureau: Vitoria, Fernando Pimentel dos Santos Speakers bureau: Novartis, Pfizer, Biogen, Vitoria,
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Neri V, Louvain T, Medina-Acosta E, Vandesteen L, Pessoa A, Nascimento A, Siquara A, Vianna D, de Carvalho JF, de Sá JD, Pereira B, dos Santos VM, Costa A, Renon T, Maia S, Lopes AS, Motté M, Santana M, Lima A, Neto PG. Genetic study, histochemical analysis and neuroimaging profile in Brazilian patients with cadasil. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Reis R, Leão A, Santos A, Maia S, Almeida J, Gonçalves M. Comparison of cardiorespiratory sleep study versus polysomnography for the diagnosis and decision to treat of obstructive sleep apnea. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Malherbe C, Ligonie A, Dupont A, Courtehoux M, Venel Y, Santiago Ribeiro M, Arlicot N, Maia S. Intérêt diagnostique de la scintigraphie des récepteurs à la somatostatine à l’111Indium-pentetréotide (Octréoscan ® ) : étude rétrospective au CHRU de Tours. Médecine Nucléaire 2017. [DOI: 10.1016/j.mednuc.2017.02.124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Vijiiac AE, Kemaloglu Oz T, Neves Pestana G, Stefan C, Coutinho Cruz M, Sanz Sanchez J, Fernandez Cabeza J, Amanullah MR, Marques L, Ruivo C, Piro V, Morgado GJ, Peteiro Vazquez JC, De Santos M, Furniss GO, Boutsikou M, Lopez Pais J, Kemal HS, Braga M, Nestoruc AG, Iancovici S, Scafa-Udriste A, Tatu-Chitoiu G, Dorobantu M, Nanda N, Kalenderoglu K, Akyuz S, Atasoy I, Osken A, Onuk T, Eren M, Sousa C, Maia S, Pinto R, Tavares-Silva M, Pinho T, Bernardo-Almeida P, Macedo F, Maciel MJ, Zamfir D, Dan M, Onut R, Onciul S, Vatasescu R, Bogdan S, Dorobantu L, Calmac L, Dorobantu M, Moura Branco L, Galrinho A, Soares Ferreira R, Bastos Goncalves F, Castro J, Mota Capitao L, Cruz Ferreira R, Osa Saez A, Arnau Vives MA, Rueda Soriano J, Blanes Julia M, Perez Guillen M, Loaiza Gongora J, Fonfria Esparcia C, Martinez Dolz L, Mesa Rubio D, Ruiz Ortiz M, Delgado Ortega M, Lopez Granados A, Lopez Aguilera J, Gutierrez Ballesteros G, Aristizabal Duque C, Pan Alvarez Ossorio M, Suarez De Lezo J, Soon JL, Ho KW, Chuah SC, Tan SY, Ding ZP, Ewe SH, Pereira A, Santos R, Guedes H, Seabra D, Sousa R, Pinto P, Montenegro Sa F, Santos L, Correia J, Guardado J, Pernencar S, Saraiva F, Morais J, Gomes AC, Cruz IR, Carmona S, Fazendas P, Joao I, Santos AI, Lopes LR, Pereira H, Bouzas-Zubeldia B, Bouzas-Mosquera A, Reyes Graciela GR, Gastaldello Natalio NG, Granillo Fernandez Marcos MGF, Potito Mauricio MP, Velazco Maria Paula PV, Streitemberger Gisela GS, Chicote-Hughes L, Morgan-Hughes GN, Viswanathan GN, Babu-Narayan S, Swan L, Alonso-Gonzalez R, Dimopoulos K, Rubens M, Ioannides M, Gatzoulis MA, Li W, Casado Alvarez R, Pais Lopez M, Gorriz Magana J, Mata Caballero R, Molina Blazquez L, Hernandez Jimenez V, Perea Egido J, Saavedra Falero J, Alonso Martin J, Gunsel A, Calkavur T, Akin M, Nascimento H, Dias P, Vasconcelos M, Madureira A, Rodrigues R, Almeida PB, Maciel MJ. Clinical Case Poster session 3P938Spectacular disappearance of a massive 4-chamber thrombusP939A very rare reason of the left atrial appendage massP940A deeper look into an aortic regurgitation - case reportP941Reversible cause of right heart failure in a patient diagnosed with cardiomyopathyP942Consequences of an infectionP943Pacemaker leads in endocarditis surgery, leave it or remove it?P944Infective endocarditis with transesophageal echocardiography inconclusive: a diagnostic challenge resolved with nuclear medicine testsP945Thrombosed transcatheter valve after a mitral valve-in-valve implantationP946Monomorphic ventricular tachycardia in a 68-year-old woman: a late diagnosis of arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D)P947A clinical case of myotonic dystrophy with complex cardiac involvementP948A case of Churg Strauss diagnosed in the cardiology consultP949Sometimes it is more than just coronary atherosclerosisP950Looking to the other side: exercise echo unveils right ventricular dysfunction in a patient with a final diagnosis of primary pulmonary hypertensionP951Right ventricle myocardial herniation as a complication of constrictive pericarditisP952An acquired gerbode defect mistaken for tricuspid regurgitation: the importance of multi-modality imaging in infective endocarditisP953Right atrial thrombus and pulmonary embolism in two patients with tricuspid atresia after Fontan operationP954Asymptomatic L-transposition of the great vessels diagnosed in adulthoodP955Aorta - right atrial tunnel with aneursymatic left main coronary arteryP956Partial anomalous pulmonary venous connection in a 70-year-old patient. Eur Heart J Cardiovasc Imaging 2016. [DOI: 10.1093/ehjci/jew259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Peixoto A, Santos C, Pinto P, Pinheiro M, Rocha P, Pinto C, Bizarro S, Veiga I, Principe AS, Maia S, Castro F, Couto R, Gouveia A, Teixeira MR. The role of targeted BRCA1/BRCA2 mutation analysis in hereditary breast/ovarian cancer families of Portuguese ancestry. Clin Genet 2014; 88:41-8. [PMID: 24916970 DOI: 10.1111/cge.12441] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 06/02/2014] [Accepted: 06/06/2014] [Indexed: 12/20/2022]
Abstract
We report the analysis of altogether 1050 suspected hereditary breast/ovarian cancer (HBOC) families, 524 fully screened for BRCA1/BRCA2 mutations and 526 tested only for the most common mutations. Of the 119 families with pathogenic mutations, 40 (33.6%) had the BRCA2 c.156_157insAlu rearrangement and 15 (12.6%) the BRCA1 c.3331_3334del mutation, the former being specific of Portuguese ancestry and the latter showing a founder effect in Portugal. Interestingly, the two most common mutations were found in a significant proportion of the HBOC families with an a priori BRCAPRO mutation probability <10%. We recommend that all suspected HBOC families from Portugal or with Portuguese ancestry, even those fulfilling moderately stringent clinical-criteria for genetic testing, should be specifically analyzed for the two most common BRCA1/BRCA2 founder mutations, and we here present a simple method for this first tier test. Screening of the entire coding regions of BRCA1 and BRCA2 should subsequently be offered to those families with a mutation probability ≥10% if none of those founder mutations are found.
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Affiliation(s)
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- Department of Medical Oncology
| | - A Gouveia
- Department of Gynecology, Portuguese Oncology Institute, Porto, Portugal
| | - M R Teixeira
- Department of Genetics.,Biomedical Sciences Institute (ICBAS), University of Porto, Porto, Portugal
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Bailly M, Zinsius A, Maia S, Santiago Ribeiro MJ. [Radiation exposure of surgical staff during sentinel node surgery. Is there a risk for the surgeon and his team?]. ACTA ACUST UNITED AC 2014; 42:296-300. [PMID: 24533993 DOI: 10.1016/j.gyobfe.2014.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 11/22/2013] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Assess the radiation exposure of surgical staff during sentinel node surgery in gynecology using a radiotracer, the (99m)Tc-microalbumin. MATERIALS AND METHODS A monocentric, prospective study was conducted during 3 months representing 40 sentinel node surgical procedures with different dosimetric measurements. Dosimeters were used to evaluate the whole body and the fingers radiation exposure for all exposed workers (surgeon, nurse and surgical assistant). Another dosimeter was used to estimate the atmospheric radiation level. The activity of (99m)Tc-microalbumin was 50.1±2.4MBq when the surgery was performed the same day and 90.4±3.2MBq when the surgery was performed the day after. RESULTS Radioactive doses received during each procedure by the surgeon, surgical assistant and nurse are 5, 3.75 and 0μSv for whole body exposure and 17.5, 15.6 and 16.2μSv for extremities respectively. Atmosphere dosimeter does not detect any radiation over this period. On average, 200 procedures are performed each year in our hospital by 7 surgeons. Surgeon's radiation exposure remains below the threshold of 1mSv annual for whole body and 50mSv annual for fingers set for public by the International Commission on Radiological Protection. DISCUSSION AND CONCLUSIONS During sentinel node surgery radiation exposure of surgical staff is weak. Everyone, including the surgeon, receives a dose below the limits of the public radiation exposure. There is no need for special dosimetric monitoring or use radiation protective devices during the sentinel node surgery using (99m)Tc-microalbumin injection.
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Affiliation(s)
- M Bailly
- Service de médecine nucléaire, hôpital Bretonneau, CHRU-hôpitaux de Tours, 2, boulevard Tonnelé, 37000 Tours, France.
| | - A Zinsius
- Service de médecine nucléaire, hôpital Bretonneau, CHRU-hôpitaux de Tours, 2, boulevard Tonnelé, 37000 Tours, France; Service compétent en radioprotection, hôpital Bretonneau, CHRU-hôpitaux de Tours, 2, boulevard Tonnelé, 37000 Tours, France
| | - S Maia
- Service compétent en radioprotection, hôpital Bretonneau, CHRU-hôpitaux de Tours, 2, boulevard Tonnelé, 37000 Tours, France
| | - M-J Santiago Ribeiro
- Service de médecine nucléaire, hôpital Bretonneau, CHRU-hôpitaux de Tours, 2, boulevard Tonnelé, 37000 Tours, France
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Pardal A, Espirito-Santo H, Lemos L, Matreno J, Amaro H, Guadalupe S, Daniel F, Ferreira J, Fernandes M, Carvalho D, Maia S, Gonçalves R. 1556 – Social suport, mental health, and satisfaction with life in institutionalized elderly. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)76565-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Neves S, Lopes D, Morais A, Carvalho C, Bettencourt A, Leal B, Mota P, Brito M, Torres S, Maia S, Pinho e Costa P, Martins da Silva B. Associations of HLA-DRB1 genotype with clinical expression of sarcoidosis portuguese patients. Pneumologie 2012. [DOI: 10.1055/s-0032-1329833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Mourinha V, Maia S, Sobral M, Ferreira L, Oliveira C, Leca O, Santos C. M242 DISSEMINATED PERITONEAL LEIOMYOMATOSIS: CASE REPORT. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)61434-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Molin AM, Andrieux J, Koolen DA, Malan V, Carella M, Colleaux L, Cormier-Daire V, David A, de Leeuw N, Delobel B, Duban-Bedu B, Fischetto R, Flinter F, Kjaergaard S, Kok F, Krepischi AC, Le Caignec C, Ogilvie CM, Maia S, Mathieu-Dramard M, Munnich A, Palumbo O, Papadia F, Pfundt R, Reardon W, Receveur A, Rio M, Ronsbro Darling L, Rosenberg C, Sá J, Vallee L, Vincent-Delorme C, Zelante L, Bondeson ML, Annerén G. A novel microdeletion syndrome at 3q13.31 characterised by developmental delay, postnatal overgrowth, hypoplastic male genitals, and characteristic facial features. J Med Genet 2011; 49:104-9. [PMID: 22180640 PMCID: PMC3261728 DOI: 10.1136/jmedgenet-2011-100534] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Congenital deletions affecting 3q11q23 have rarely been reported and only five cases have been molecularly characterised. Genotype-phenotype correlation has been hampered by the variable sizes and breakpoints of the deletions. In this study, 14 novel patients with deletions in 3q11q23 were investigated and compared with 13 previously reported patients. METHODS Clinical data were collected from 14 novel patients that had been investigated by high resolution microarray techniques. Molecular investigation and updated clinical information of one cytogenetically previously reported patient were also included. RESULTS The molecular investigation identified deletions in the region 3q12.3q21.3 with different boundaries and variable sizes. The smallest studied deletion was 580 kb, located in 3q13.31. Genotype-phenotype comparison in 24 patients sharing this shortest region of overlapping deletion revealed several common major characteristics including significant developmental delay, muscular hypotonia, a high arched palate, and recognisable facial features including a short philtrum and protruding lips. Abnormal genitalia were found in the majority of males, several having micropenis. Finally, a postnatal growth pattern above the mean was apparent. The 580 kb deleted region includes five RefSeq genes and two of them are strong candidate genes for the developmental delay: DRD3 and ZBTB20. CONCLUSION A newly recognised 3q13.31 microdeletion syndrome is delineated which is of diagnostic and prognostic value. Furthermore, two genes are suggested to be responsible for the main phenotype.
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Affiliation(s)
- Anna-Maja Molin
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden.
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Wattiez A, Vazquez A, Maia S. The Importance of Strategy in Deep Endometriosis Surgery. J Minim Invasive Gynecol 2011. [DOI: 10.1016/j.jmig.2011.08.516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Wattiez A, Vazquez A, Maia S. Direct Entry and Trocars Placement: The Way To Do It Safely, Ergonomically, and Esthetically. J Minim Invasive Gynecol 2011. [DOI: 10.1016/j.jmig.2011.08.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Maia S, Ayachi Hatit N, Paycha F. [Situation of supply and boom of PET imaging: what is the future for technetium-99m in nuclear medicine?]. Ann Pharm Fr 2011; 69:155-64. [PMID: 21570540 DOI: 10.1016/j.pharma.2011.02.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 02/22/2011] [Accepted: 02/25/2011] [Indexed: 12/26/2022]
Abstract
Molecular imaging has shown its interest in the diagnosis, staging and therapy monitoring of many diseases, especially in the field of cancer. This imaging modality can detect non-invasively early molecular changes specific to these diseases. Its expansion includes two aspects linked firstly with the advanced techniques of imaging modalities and secondly with the development of tracers as radio pharmaceuticals for imaging new molecular targets. Technetium-99m ((99m)Tc), because of its physical characteristics, its widespread availability and low cost, is the most used radionuclide in molecular imaging with the technique of single photon emission computed tomography (SPECT). Nevertheless, the current difficulty concerning the supply and the great interest of Positron Emission Tomography (PET), the "competitor" imaging modality-using molecules labelled with fluorine-18 ((18)F), legitimates the question about the future of (99m)Tc, its supremacy and the emergence of new tracer labelled with (99m)Tc. Focusing on the actual and future supply situation, the place of SPECT imaging in nuclear medicine, as well as the development of new molecules labelled with (99m)Tc is necessary to show that this radionuclide will remain essential for the speciality in the next years.
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Affiliation(s)
- S Maia
- Service de pharmacie et radiopharmacie, hôpital Bretonneau, CHRU de Tours, France.
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Maia S, Alves J, Lagoa A. P1062 Breast cancer in young women: follow-up after treatment. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62547-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Maia S, Alves J, Lobo I, Lagoa A. O568 A rare case of fetal growth restriction. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)60941-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Amorim M, Melo F, Leite D, Maia S, Radaci I, Melo A, Souza A, Alves J. V30 Humanization of childbirth in Brazil: results in a public maternity in Northeast. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61467-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Teixeira EG, Menzies D, Comstock GW, Cunha AJLA, Kritski AL, Soares LC, Bethlem E, Zanetti G, Ruffino-Netto A, Belo MTCT, Selig L, Branco MMC, Cherri D, Maia S, Marandino R, Luiz RR, Chaisson RE, Trajman A. Latent tuberculosis infection among undergraduate medical students in Rio de Janeiro State, Brazil. Int J Tuberc Lung Dis 2005; 9:841-7. [PMID: 16104628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023] Open
Abstract
SETTING Five medical schools in three cities with different tuberculosis (TB) incidence rates in Rio de Janeiro State, Brazil. OBJECTIVE To estimate prevalence of and associated factors for latent tuberculosis infection (LTBI) among medical students. DESIGN A cross-sectional survey was conducted among undergraduate students in pre-clinical, early and late clinical years from schools in cities with low (28/100,000), intermediate (63/100,000) and high (114/100,000) TB incidence rates. Information on socio-demographic profile, previous BCG vaccination, potential TB exposure, co-morbidity and use of respiratory protective masks was obtained. A tuberculin skin test (TST) was performed using the Mantoux technique by an experienced professional. A positive TST, defined as induration > or = 10 mm, was considered LTBI. RESULTS LTBI prevalence was 6.9% (95%CI 5.4-8.6). In multivariate analysis, male sex (adjusted odds ratio [aOR] 1.8; 95% CI 1.1-3.0), late clinical years (aOR 1.9; 95% CI 1.01-3.5), intermediate TB incidence (aOR 4.3; 95% CI 1.3-14.6) and high TB incidence in the city of medical school (aOR 5.1; 95% CI 1.6-16.8) were significantly associated with LTBI. CONCLUSIONS The higher prevalence of LTBI in late clinical years suggests that medical students are at increased risk for nosocomial Mycobacterium tuberculosis infection. The implementation of a TB control program may be necessary in medical schools, particularly in cities with higher TB incidence.
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Affiliation(s)
- E G Teixeira
- Department of Internal Medicine, Gama Filho University, Rio de Janeiro, Brazil.
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Portugal I, Maia S, Moniz-Pereira J. Discrimination of multidrug-resistant Mycobacterium tuberculosis IS6110 fingerprint subclusters by rpoB gene mutation analysis. J Clin Microbiol 1999; 37:3022-4. [PMID: 10449496 PMCID: PMC85442 DOI: 10.1128/jcm.37.9.3022-3024.1999] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The rpoB gene mutations in a 69-bp region of the gene, resulting in resistance to rifampin, were used to discriminate between Mycobacterium tuberculosis IS6110 fingerprint subclusters. These subclusters exhibited identical IS6110 fragments or had one or two additional fragments. In the two major subclusters all the analyzed strains have the same variant rpoB allele but are different from each other, suggesting the occurrence of independent outbreaks.
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Affiliation(s)
- I Portugal
- Unidade dos Retrovírus e Infecções Associadas and Centro de Patogénese Molecular, Faculdade de Farmácia da Universidade de Lisboa, 1649-019 Lisbon, Portugal.
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Hamid A, Curtis R, McCoy K, McGuire J, Conde A, Bushell W, Lindenmayer R, Brimberg K, Maia S, Abdur-Rashid S, Settembrino J. The heroin epidemic in New York City: current status and prognoses. J Psychoactive Drugs 1997; 29:375-91. [PMID: 9460032 DOI: 10.1080/02791072.1997.10400565] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Since 1989, heroin production worldwide has risen; in New York City, as its purity rose and prices fell, street-level markets were restructured and offered heroin in addition to cocaine and crack (which had been popular during the 1980s). While officials estimate that there are between 500,000 and one million hard-core, chronic heroin users nationwide, evidence of supplemental users heralding another heroin era includes: more overdoses and overdose deaths, greater demand for treatment, larger seizures of heroin at all levels of distribution and related arrests, and broader media coverage. In this article, the authors describe the characteristics of populations in which there may have been a percentage increase of new users, such as young middle- or upper-class European-Americans, young Puerto Ricans and recent Haitian and Russian immigrants. The abstinence of young African-Americans is also noted. The article ends with a preliminary needs assessment of the new users in the areas of health (including AIDS), housing, employment, treatment, arrest and imprisonment.
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Affiliation(s)
- A Hamid
- Department of Anthropology, John Jay College of Criminal Justice, New York 10019, USA
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