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Costa F, Teles P, Nogueira A, Barreto A, Santos A, Carvalho A, Martins B, Oliveira C, Gaspar C, Barros C, Neves D, Costa D, Rodrigues E, Godinho F, Alves F, Cardoso G, Cantinho G, Conde I, Vale J, Santos J, Isidoro J, Pereira J, Salgado L, Rézio M, Vieira M, Simãozinho P, Almeida P, Castro R, Parafita R, Pintão S, Lúcio T, Reis T, Vaz P. Estimation of the collective ionizing dose in the Portuguese population for the years 2011 and 2012, due to nuclear medicine exams. Rev Esp Med Nucl Imagen Mol 2015. [DOI: 10.1016/j.remnie.2014.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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77
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Silva M, Félix J, Ferreira D, Vandewalle B, Guerra I, Cure S, Aldir I, Carvalho A, Macedo G, Marinho RT, Pedroto I, Ramalho F. Sofosbuvir For The Treatment Of Chronic Hepatitis C: A Comprehensive Cost-Effectiveness Analysis Across Hcv Genotypes, Pretreatment Conditions And Hiv Co-Infection. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A366. [PMID: 27200767 DOI: 10.1016/j.jval.2014.08.820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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78
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Félix J, Silva M, Ferreira D, Vandewalle B, Guerra I, Cure S, Aldir I, Carvalho A, Macedo G, Marinho RT, Pedroto I, Ramalho F. High Therapeutic Efficiency With Sofosbuvir For The Treatment Of Chronic Hepatitis C. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A371. [PMID: 27200791 DOI: 10.1016/j.jval.2014.08.847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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79
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Avsar A, Tan JY, Taychatanapat T, Balakrishnan J, Koon G, Yeo Y, Lahiri J, Carvalho A, Rodin AS, O’Farrell E, Eda G, Castro Neto AH, Özyilmaz B. Spin–orbit proximity effect in graphene. Nat Commun 2014; 5:4875. [DOI: 10.1038/ncomms5875] [Citation(s) in RCA: 350] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 07/31/2014] [Indexed: 01/13/2023] Open
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Thiry G, Hombach J, Constenla D, Carvalho A, Durbin A. New chapter unfolding in the fight against dengue with an unwritten ending. Trans R Soc Trop Med Hyg 2014; 108:597-8. [DOI: 10.1093/trstmh/tru149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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81
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Rodrigues AL, Carvalho A, Cabral R, Carneiro V, Gilardi P, Duarte CP, Puente-Prieto J, Santos P, Mota-Vieira L. Multiple nevoid basal cell carcinoma syndrome associated with congenital orbital teratoma, caused by a PTCH1 frameshift mutation. GENETICS AND MOLECULAR RESEARCH 2014; 13:5654-63. [PMID: 25117323 DOI: 10.4238/2014.july.25.21] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Gorlin-Goltz syndrome, or nevoid basal cell carcinoma syndrome (NBCCS), is a rare autosomal dominant disorder caused by mutations in the PTCH1 gene and shows a high level of penetrance and variable expressivity. The syndrome is characterized by developmental abnormalities or neoplasms and is diagnosed with 2 major criteria, or with 1 major and 2 minor criteria. Here, we report a new clinical manifestation associated with this syndrome in a boy affected by NBCCS who had congenital orbital teratoma at birth. Later, at the age of 15 years, he presented with 4 major and 4 minor criteria of NBCCS, including multiple basal cell carcinoma and 2 odontogenic keratocysts of the jaw, both confirmed by histology, more than 5 palmar pits, calcification of the cerebral falx, extensive meningeal calcifications, macrocephaly, hypertelorism, frontal bosses, and kyphoscoliosis. PTCH1 mutation analysis revealed the heterozygous germline mutation c.290dupA. This mutation generated a frameshift within exon 2 and an early premature stop codon (p.Asn97LysfsX43), predicting a truncated protein with complete loss of function. Identification of this mutation is useful for genetic counseling. Although the clinical symptoms are well-known, our case contributes to the understanding of phenotypic variability in NBCCS, highlighting that PTCH1 mutations cannot be used for predicting disease burden and reinforces the need of a multidisciplinary team in the diagnosis, treatment, and follow-up of NBCCS patients.
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Carvalho A, Martins MBF, Corvo ML, Feio G. Enhanced contrast efficiency in MRI by PEGylated magnetoliposomes loaded with PEGylated SPION: effect of SPION coating and micro-environment. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 43:521-6. [PMID: 25175245 DOI: 10.1016/j.msec.2014.07.055] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 05/14/2014] [Accepted: 07/15/2014] [Indexed: 01/04/2023]
Abstract
Magnetic core coatings modify the efficiency of nanoparticles used as contrast agents for MRI. In studies of these phenomena, care should be given to take into account possible effects of the specific micro-environment where coated nanoparticles are embedded. In the present work, the longitudinal and transverse relaxivities of superparamagnetic iron oxide nanoparticles stabilized with short-chain polyethylene glycol molecules (PEGylated SPIONs) were measured in a 7T magnetic field. PEGylated SPIONs with two different diameters (5 and 10nm) were studied. Two different PEGylated magnetoliposomes having liposome bilayer membranes composed of egg-phosphatidylcholine, cholesterol and 1,2-distearoyl-sn-glycerol-3-phosphoethanolamine-N-[methoxy PEG-2000] were also studied for their relaxivities, after being loaded with the PEGylated SPION of 5 or 10nm. This type of liposomes is known to have long residence time in bloodstream that leads to an attractive option for therapeutic applications. The influence of the magnetic core coating on the efficiency of the nanosystem as a negative contrast agent for MRI was then compared to the cumulative effect of the coating plus the specific micro-environment components. As a result, it was found that the PEGylated magnetoliposomes present a 4-fold higher efficiency as negative contrast agents for MRI than the PEGylated SPION.
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Paulino J, Vigia E, Marcelino P, Abade O, Sobral J, Ligeiro D, Carvalho A, Alves M, Papoila A, Trindade H, Barroso E. Genetic Expression Profile of Human Liver Grafts in Ischemia-Reperfusion Injury: Comparison of Familial Amyloidotic Polyneuropathy and Deceased-Donor Liver Grafts. Transplant Proc 2014; 46:1678-84. [DOI: 10.1016/j.transproceed.2014.05.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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84
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Rodin AS, Carvalho A, Castro Neto AH. Strain-induced gap modification in black phosphorus. PHYSICAL REVIEW LETTERS 2014; 112:176801. [PMID: 24836264 DOI: 10.1103/physrevlett.112.176801] [Citation(s) in RCA: 450] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Indexed: 05/04/2023]
Abstract
The band structure of single-layer black phosphorus and the effect of strain are predicted using density functional theory and tight-binding models. Having determined the localized orbital composition of the individual bands from first principles, we use the system symmetry to write down the effective low-energy Hamiltonian at the Γ point. From numerical calculations and arguments based on the crystal structure of the material, we show that the deformation in the direction normal to the plane can be used to change the gap size and induce a semiconductor-metal transition.
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Ladeira I, Correia AM, Dias J, Gaio R, Carvalho I, Carvalho A, Duarte R. Confirming the diagnosis of tuberculosis in children in Northern Portugal. Int J Tuberc Lung Dis 2014; 18:531-3. [DOI: 10.5588/ijtld.13.0793] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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86
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Anjo J, Café A, Carvalho A, Doroana M, Fraga J, Gíria J, Marinho R, Santos S, Velosa J. O impacto da hepatite C em Portugal. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.jpg.2014.03.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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87
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Carvalho A, Madeiro H, Santos C. Radiation Therapy Without Neck Dissection as the Elective Neck Treatment for cN0 High-Risk Major Salivary Gland Patients Submitted to Surgery. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2013.11.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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88
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Mateus P, Caldas de Almeida J, Carvalho A, Xavier M. EPA-0710 – Portuguese mental health services and workforce profiles. Eur Psychiatry 2014. [DOI: 10.1016/s0924-9338(14)78069-1] [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: 10/25/2022] Open
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89
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Mansilha C, Carvalho A, Guimarães P, Espinha Marques J. Water quality concerns due to forest fires: polycyclic aromatic hydrocarbons (PAH) contamination of groundwater from mountain areas. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2014; 77:806-15. [PMID: 25072713 DOI: 10.1080/15287394.2014.909301] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Water quality alterations due to forest fires may considerably affect aquatic organisms and water resources. These impacts are cumulative as a result of pollutants mobilized from fires, chemicals used to fight fire, and postfire responses. Few studies have examined postfire transport into water resources of trace elements, including the polycyclic aromatic hydrocarbons (PAH), which are organic pollutants produced during combustion and are considered carcinogenic and harmful to humans. PAH are also known to adversely affect survival, growth, and reproduction of many aquatic species. This study assessed the effects of forest wildfires on groundwater from two mountain regions located in protected areas from north and central Portugal. Two campaigns to collect water samples were performed in order to measure PAH levels. Fifteen of 16 studied PAH were found in groundwater samples collected at burned areas, most of them at concentrations significantly higher than those found in control regions, indicating aquifer contamination. The total sum of PAH in burned areas ranged from 23.1to 95.1 ng/L with a median of 62.9 ng/L, which is one- to sixfold higher than the average level measured in controls (16.2 ng/L). In addition, in control samples, the levels of light PAH with two to four rings were at higher levels than heavy PAH with five or six rings, thus showing a different profile between control and burned sites. The contribution of wildfires to groundwater contamination by PAH was demonstrated, enabling a reliable assessment of the impacts on water quality and preparation of scientifically based decision criteria for postfire forest management practices.
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Soares Pires F, van Zeller M, Reis R, Carvalho A, Duarte R. Abordagem diagnóstica na tuberculose ganglionar. REVISTA PORTUGUESA DE PNEUMOLOGIA 2013; 19:237-8. [DOI: 10.1016/j.rppneu.2013.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2012] [Revised: 06/12/2013] [Accepted: 06/12/2013] [Indexed: 10/26/2022] Open
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91
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Cipriano J, Carvalho A, Fernandes C, Gaspar MJ, Pires J, Bento J, Roxo L, Louzada J, Lima-Brito J. Evaluation of genetic diversity of Portuguese Pinus sylvestris L. populations based on molecular data and inferences about the future use of this germplasm. J Genet 2013; 92:e41-8. [PMID: 23981929 DOI: 10.1007/s12041-013-0241-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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92
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Figueira A, Monteiro A, Marques M, Carvalho A, Inácio D, Soares P, Reis T, Batel V, Pinto G. Pelvic radiotherapy: Do we really need high energy beams? Rep Pract Oncol Radiother 2013. [DOI: 10.1016/j.rpor.2013.03.611] [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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93
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Areias V, Neves I, Carvalho A, Duarte R. Mycobacterium tuberculosis, quanto tempo passeaste? REVISTA PORTUGUESA DE PNEUMOLOGIA 2013; 19:139-40. [DOI: 10.1016/j.rppneu.2012.12.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Accepted: 12/20/2012] [Indexed: 10/26/2022] Open
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94
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Carvalho A, Pelaez-Vargas A, Gallego-Perez D, Grenho L, Fernandes M, De Aza A, Ferraz M, Hansford D, Monteiro F. Micropatterned silica thin films with nanohydroxyapatite micro-aggregates for guided tissue regeneration. Dent Mater 2012; 28:1250-60. [DOI: 10.1016/j.dental.2012.09.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Revised: 08/12/2012] [Accepted: 09/07/2012] [Indexed: 11/29/2022]
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Areias J, Calinas F, Porto A, Carvalho A, Freitas D, Macedo G, Noronha R, Cotter J, Meliço-Silvestre A, Peixe R, Pratas J, Barrote D, Teixeira R, Augusto F, Carrilho I, Campante F, Velosa J, Carvalho L, Duarte MA, Guerreiro H, Pires C, Silva A, Cotrim I, Guedes F, Tomé L, Marcelino M, Gonçalves C, Ferreira E, Matos L, Peixe P, Esteves J, Valente T, Simões C, Marinho C, Jasmins L, Vieira MJ, Marinho R, Matos P, Estevens J, Carrasquinho J, Salcedo G, Parada P, Teixeira C. One year of Lamivudine therapy for portuguese patients with chronic hepatitis B. Clin Drug Investig 2012; 23:339-46. [PMID: 17535046 DOI: 10.2165/00044011-200323050-00004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
OBJECTIVE To assess the efficacy of lamivudine treatment on hepatitis B e antigen (HBeAg) and/or hepatitis B surface antigen (HBsAg) seroconversion, on other virological and serological markers of response including hepatitis B virus (HBV) DNA and serum aminotransferases, and the safety of lamivudine treatment in hepatitis B patients. PATIENTS This phase III open-label study evaluated the virological and biochemical response to lamivudine in 70 Portuguese patients with HBeAg positive chronic hepatitis B. Patients were treated with lamivudine 100mg once daily for 12 months. METHODS Antiviral activity was assessed by measuring alanine aminotransferase (ALT)/aspartate aminotransferase (AST) levels at all protocol visits, and hepatitis B serology and HBV DNA were performed at baseline and at month 12 visits. Evaluation of safety and tolerance was based on clinical adverse events and laboratory analyses. RESULTS The primary endpoint was virological response at month 12, defined as loss of detectable HBeAg from serum with a reduction of HBV DNA to undetectable levels, and this was observed in 19/69 (27.5%) of patients. Almost half of the patients were HBV DNA negative by this time. Mean ALT values decreased steadily during treatment and by 12 months 61% of patients had values within the normal range. HBeAg seroconversion (HBeAg negative, HBeAb positive) was achieved in 27.9% of patients by 12 months, although all patients remained HBsAg positive. CONCLUSION Lamivudine was well tolerated and the incidence of adverse events was similar to those reported in previous studies. Lamivudine treatment resulted in virological and biochemical improvements in HBeAg positive chronic hepatitis B patients, with HBeAg seroconversion in one-third of patients.
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Duarte R, Neto M, Carvalho A, Barros H. Improving tuberculosis contact tracing: the role of evaluations in the home and workplace. Int J Tuberc Lung Dis 2012; 16:55-9. [PMID: 22236846 DOI: 10.5588/ijtld.10.0511] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING In 2004, the tuberculosis (TB) contact screening strategy in Vila Nova de Gaia, Portugal, was changed from targeting only close contacts identified by interviews with the index patient (reflecting national policy) to include visits to the patient?s home and workplace. OBJECTIVE To find out 1) whether the new strategy increased adherence to TB screening procedures, 2) whether the strategy identified more at-risk contacts and 3) whether the strategy increased prevention of TB. METHODS We compared TB contact tracing during the periods 2001-2003 and 2004-2006. The numbers of identified and screened contacts and the results of screening procedures (number of patients with active TB and latent TB infection [LTBI] detected per index case) were analysed. The number of instances of active TB prevented and the numbers of contacts that had to be screened to prevent one such instance were calculated and compared for both screening strategies. RESULTS Home and workplace visits helped to identify more at-risk contacts (8.4 per index patient) than interview (2.5 per index patient), and improved adherence (87.3% of identified contacts were screened compared to 67.6% previously). More patients with active TB and LTBI were detected (1.4 per index patient compared with 0.75 per index patient previously), and more TB cases were prevented. CONCLUSION The newly implemented contact screening programme, featuring home and workplace evaluation of TB patient contacts, improved adherence to screening procedures, identified more at-risk contacts and should prevent more TB cases in the future.
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Carvalho B, Silva J, Cunha M, Viana P, Leite R, Stevenson D, Carvalho A, Oliveira C, da Silva JT, Póvoa A, Soares S, Calejo L, Sousa S, Xavier P, Sousa M, Barros A, Carvalho F. P33 Preimplantation genetic diagnosis for Portuguese familial amyloidotic polyneuropathy – 12 years' experience. Reprod Biomed Online 2012. [DOI: 10.1016/s1472-6483(12)60250-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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98
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Nascimento T, Cardoso M, Presado H, Carvalho A. 157 SEXUAL SATISFACTION IN MIDDLE AGE. Maturitas 2012. [DOI: 10.1016/s0378-5122(12)70268-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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99
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Monteiro A, Strunk A, Carvalho A, Tchepel O, Miranda AI, Borrego C, Saavedra S, Rodríguez A, Souto J, Casares J, Friese E, Elbern H. Investigating a high ozone episode in a rural mountain site. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2012; 162:176-189. [PMID: 22243863 DOI: 10.1016/j.envpol.2011.11.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Revised: 10/29/2011] [Accepted: 11/08/2011] [Indexed: 05/31/2023]
Abstract
A very high ozone episode with observed hourly values above 350 μg m(-3) occurred in July 2005 at the Lamas d'Olo air quality monitoring station, located in a mountainous area in the north of Portugal. Aiming to identify the origin and formation of this ozone-rich episode, a statistical analysis and a modelling approach were applied. A cross-spectrum analysis in the frequency domain and a synoptic analysis of the meteorological and air quality time series were performed. In order to go further in this analysis, a numerical modelling approach was applied. The results indicate that the transport of ozone and its precursors is the main responsible for the high ozone concentrations. Together with the local mountain breeze and subsidence conditions, the sea-breeze circulation transporting pollutants from the coastal urban and industrialized areas that reach the site during late afternoon turn out to be the driving forces for the ozone peaks.
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100
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Botelho F, Figueiredo L, Leite R, Carvalho A, Tomada N, Vendeira P. Predictive factors of a successful testicular biopsy and subsequent clinical pregnancy. Andrologia 2012; 44:237-42. [PMID: 22272771 DOI: 10.1111/j.1439-0272.2012.01276.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/25/2011] [Indexed: 11/27/2022] Open
Abstract
Forecast of success with testicular sperm extraction and intracytoplasmic sperm injection (ICSI) remains unknown, as predictive factors have rarely been studied. We evaluated the association among possible predictive factors and a successful biopsy and clinical pregnancy. A consecutive sample of men submitted to a testicular open biopsy in S. João Hospital was used. Patient's age, medical history, testicular volume, spermogram, genetic testing, endocrinologic results, biopsy results and clinical pregnancy information were collected. From the 113 men included, it was possible to retrieve spermatozoa in 79.6% of the cases, which resulted in 58 fertilisations and 22 clinical pregnancies. Retrieving viable spermatozoa on biopsy was associated with the identification of spermatozoa in the spermogram (100.0% versus 74.4%; P = 0.010), diseases causing obstructive infertility (100.0% versus 79.2%; P = 0.036) and no genetic causes detected (82.4% versus 54.5%; P = 0.030). Successful clinical pregnancy was only associated with lower female partner age (31.7 versus 36.0 year; P = 0.001) but not the quality of the spermatozoa or the time until the reproduction cycle. Identification of spermatozoa in the spermogram, diseases causing obstructive infertility and lack of genetic causes for infertility were associated with higher probability of viable spermatozoa retrieval but the female partner age remained the principal determinant of a successful pregnancy.
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