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Augusto A, Miranda A, Costa L, Pinheiro J, Campos MJ, Raimundo D, Pedrosa R, Mitchell G, Niranjan K, Silva SF. A pilot plant scale testing of the application of seaweed‐based natural coating and modified atmosphere packaging for shelf‐life extension of fresh‐cut apple. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Ana Augusto
- MARE ‐ Centro de Ciências do Mar e do Ambiente, ESTM, Politécnico de Leiria, 2520‐641 Peniche Portugal
- Department of Food and Nutritional Sciences University of Reading Reading United Kingdom
- Centre for Rapid and Sustainable Product Development (CDRsp), Politécnico de Leiria, 2430‐028 Marinha Grande
| | - Andreia Miranda
- MARE ‐ Centro de Ciências do Mar e do Ambiente, ESTM, Politécnico de Leiria, 2520‐641 Peniche Portugal
| | - Leonor Costa
- iBET – Instituto de Biologia Experimental e Tecnológica, 2781‐901 Oeiras Portugal
| | - Joaquina Pinheiro
- MARE ‐ Centro de Ciências do Mar e do Ambiente, ESTM, Politécnico de Leiria, 2520‐641 Peniche Portugal
| | - Maria J. Campos
- MARE ‐ Centro de Ciências do Mar e do Ambiente, ESTM, Politécnico de Leiria, 2520‐641 Peniche Portugal
| | | | - Rui Pedrosa
- MARE ‐ Centro de Ciências do Mar e do Ambiente, ESTM, Politécnico de Leiria, 2520‐641 Peniche Portugal
| | - Geoffrey Mitchell
- Centre for Rapid and Sustainable Product Development (CDRsp), Politécnico de Leiria, 2430‐028 Marinha Grande
| | - Keshavan Niranjan
- Department of Food and Nutritional Sciences University of Reading Reading United Kingdom
| | - Susana F.J. Silva
- MARE ‐ Centro de Ciências do Mar e do Ambiente, ESTM, Politécnico de Leiria, 2520‐641 Peniche Portugal
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Valdez C, Costa C, Simões M, de Carvalho CCCR, Baptista T, Campos MJ. Detection of mcr-1 Gene in Undefined Vibrio Species Isolated from Clams. Microorganisms 2022; 10:microorganisms10020394. [PMID: 35208850 PMCID: PMC8876837 DOI: 10.3390/microorganisms10020394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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] [Received: 12/23/2021] [Revised: 01/24/2022] [Accepted: 02/03/2022] [Indexed: 01/27/2023] Open
Abstract
The increase of antimicrobial resistant strains is leading to an emerging threat to public health. Pathogenic Vibrio are responsible for human and animal illness. The Enterobacteriaceae family includes microorganisms that affect humans, causing several infections. One of the main causes of human infection is related to the ingestion of undercooked seafood. Due to their filter-feeding habit, marine invertebrates, such as clams, are known to be a natural reservoir of specific microbial communities. In the present study, Vibrionaceae and coliforms microorganisms were isolated from clams. A microbial susceptibility test was performed using the disk diffusion method. From 43 presumptive Vibrio spp. and 17 coliforms, three Vibrio spp. with MICs to colistin >512 mg L−1 were found. From the 23 antimicrobial resistance genes investigated, only the three isolates that showed phenotypic resistance to colistin contained the mcr-1 gene. Genotypic analysis for virulence genes in EB07V indicated chiA gene presence. The results from the plasmid cure and transformation showed that the resistance is chromosomally mediated. Biochemical analysis and MLSA, on the basis of four protein-coding gene sequences (recA, rpoB, groEL and dnaJ), grouped the isolates into the genus Vibrio but distinguished them as different from any known Vibrio spp.
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Affiliation(s)
- Christian Valdez
- MARE-Marine and Environmental Sciences Centre, ESTM, Polytechnic of Leiria, 2520-630 Peniche, Portugal; (C.V.); (C.C.); (M.S.); (T.B.)
| | - Cátia Costa
- MARE-Marine and Environmental Sciences Centre, ESTM, Polytechnic of Leiria, 2520-630 Peniche, Portugal; (C.V.); (C.C.); (M.S.); (T.B.)
| | - Marco Simões
- MARE-Marine and Environmental Sciences Centre, ESTM, Polytechnic of Leiria, 2520-630 Peniche, Portugal; (C.V.); (C.C.); (M.S.); (T.B.)
| | - Carla C. C. R. de Carvalho
- iBB-Institute for Bioengineering and Biosciences, Department of Bioengineering, Associate Laboratory i4HB—Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
| | - Teresa Baptista
- MARE-Marine and Environmental Sciences Centre, ESTM, Polytechnic of Leiria, 2520-630 Peniche, Portugal; (C.V.); (C.C.); (M.S.); (T.B.)
| | - Maria J. Campos
- MARE-Marine and Environmental Sciences Centre, ESTM, Polytechnic of Leiria, 2520-630 Peniche, Portugal; (C.V.); (C.C.); (M.S.); (T.B.)
- Correspondence:
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Augusto A, Miranda A, Crespo D, Campos MJ, Raimundo D, Pedrosa R, Mitchell G, Niranjan K, Silva SF. Preservation of fresh-cut Rocha Pear using Codium tomentosum extract. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112938] [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: 10/19/2022]
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Neves M, Antunes M, Fernandes W, Campos MJ, Azevedo ZM, Freitas V, Rocha JM, Tecelão C. Physicochemical and nutritional profile of leaves, flowers, and fruits of the edible halophyte chorão-da-praia (Carpobrotus edulis) on Portuguese west shores. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Hormeño L, Campos MJ, Vadillo S, Quesada A. Occurrence of tet(O/M/O) Mosaic Gene in Tetracycline-Resistant Campylobacter. Microorganisms 2020; 8:E1710. [PMID: 33142824 PMCID: PMC7693602 DOI: 10.3390/microorganisms8111710] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/29/2020] [Accepted: 10/30/2020] [Indexed: 11/18/2022] Open
Abstract
Campylobacter is one of the most important microorganisms responsible for foodborne diseases in the EU. In this study, we investigated resistance to tetracycline in 139 Campylobacter jejuni and Campylobacter coli samples isolated from human clinical cases. From these, 110 were resistant to tetracycline, with MIC (minimal inhibitory concentration) varying in a range of 1 to >512 μg/mL, and 109 (78.4%) carried tet(O), a gene that confers resistance to tetracycline through the expression of a protein that confers protection to the ribosome. Amongst the tetracycline-resistant isolates, one C. jejuni (HCC30) was the only tet(O)-negative sample, presenting an MIC of 256 μg/mL. Instead, the mosaic gene tet(O/M/O) was found in HCC30 and, as far as we know, this is the first description of this chimeric gene originating from homologous recombination between tet(O) and tet(M). The previously described mosaic gene tet(O/32/O), also found in Campylobacter, presents a chimeric structure very similar to that of tet(O/M/O), affecting domains II and III of encoded proteins distantly related to the elongation factor G (EF-G). The tet(O/M/O) mosaic gene has been found in nucleotide databases in several genomes of Campylobacter isolated from different origins, indicating its frequent acquisition, even though it can be undetected through screening by PCR with specific tet(O) primers. In this work, we address the improvement of classical PCR to efficiently diagnose the most prevalent tetracycline resistance determinants in Campylobacter, including tet(O/M/O), which should be taken into account in the optimization of campylobacteriosis treatments.
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Affiliation(s)
- Lorena Hormeño
- Departamento de Bioquímica, Biología Molecular y Genética, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain; (L.H.); (A.Q.)
| | - Maria J. Campos
- MARE-Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, 2520-641 Peniche, Portugal
| | - Santiago Vadillo
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain;
| | - Alberto Quesada
- Departamento de Bioquímica, Biología Molecular y Genética, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain; (L.H.); (A.Q.)
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Sampaio A, Norte G, Campos MJ, Raimundo A, Carreira C, Órfão R. Anaesthetic management of intracranial hypertension and pregnancy. A case report. ACTA ACUST UNITED AC 2020; 67:204-207. [PMID: 32192721 DOI: 10.1016/j.redar.2019.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 10/15/2019] [Revised: 11/15/2019] [Accepted: 11/19/2019] [Indexed: 10/24/2022]
Abstract
Hydrocephalus is an active distension of the ventricular system of the brain. The improved survival rates of patients with neurosurgical pathology is accompanied by a greater number of non-neurosurgical procedures in patients who have therapeutic neurosurgical devices. The real incidence of pregnancy in patients with obstructive hydrocephalus controlled with ventriculoperitoneal shunt (VPS) is unclear. We present a case of a pregnant 34-year-old female with a VPS for obstructive hydrocephalus. Due to VPS obstruction secondary to uterus volume, she presented several episodes of neurological impairment during pregnancy. An elective caesarean section (C-section) and VPS review were planned for the same operative time. This rare case reflects the challenge that the anaesthesiologist has to face in order to provide the best and simultaneous management of the wellbeing of the mother, the mother's brain and the foetus.
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Affiliation(s)
- A Sampaio
- Servicio de Anestesiología, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.
| | - G Norte
- Servicio de Anestesiología, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - M J Campos
- Servicio de Anestesiología, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - A Raimundo
- Servicio de Anestesiología, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - C Carreira
- Servicio de Anestesiología, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - R Órfão
- Servicio de Anestesiología, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
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Lima MH, Campos MJ, Valentim A, Paulo L, Rego S, Semedo E. Intranasal self-administration of local anesthetic (ropivacaine) for sphenopalatine ganglion block, for treatment of second trigeminal branch neuralgia secondary to maxillary sinus curettage: A case report. ACTA ACUST UNITED AC 2019; 66:447-450. [PMID: 31395405 DOI: 10.1016/j.redar.2019.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 10/10/2018] [Revised: 02/04/2019] [Accepted: 02/05/2019] [Indexed: 10/26/2022]
Abstract
Trigeminal neuralgia (TN) is a severe and often underestimated facial pain that affects quality of life. Pharmacological treatment is insufficient for pain control in 30% of cases and, although intervention techniques may be effective, there is a possibility of relapse and associated complications. The second division of the trigeminal nerve (V2) runs through the sphenopalatine ganglion (SPG), which is anatomically accessible to blocking due to its superficial location in the nasal cavity. We report a clinical case of a patient with uncontrolled V2 TN that was put on ambulatory self-administered SPG block with nasal swabs soaked in 0.75% ropivacaine. In the follow-up visits, we confirmed that this adjuvant treatment provided a significant pain relief over 24hours with a decrease in the number of exacerbations.
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Affiliation(s)
- M H Lima
- Departamento de Anestesiología, Centro Hospitalario y Universitario de Coimbra, Coimbra, Portugal.
| | - M J Campos
- Departamento de Anestesiología, Centro Hospitalario y Universitario de Coimbra, Coimbra, Portugal
| | - A Valentim
- Departamento de Anestesiología, Centro Hospitalario y Universitario de Coimbra, Coimbra, Portugal
| | - L Paulo
- Departamento de Anestesiología, Centro Hospitalario y Universitario de Coimbra, Coimbra, Portugal
| | - S Rego
- Departamento de Anestesiología, Centro Hospitalario y Universitario de Coimbra, Coimbra, Portugal
| | - E Semedo
- Departamento de Anestesiología, Centro Hospitalario y Universitario de Coimbra, Coimbra, Portugal
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Hormeño L, Ugarte-Ruiz M, Palomo G, Borge C, Florez-Cuadrado D, Vadillo S, Píriz S, Domínguez L, Campos MJ, Quesada A. ant(6)-I Genes Encoding Aminoglycoside O-Nucleotidyltransferases Are Widely Spread Among Streptomycin Resistant Strains of Campylobacter jejuni and Campylobacter coli. Front Microbiol 2018; 9:2515. [PMID: 30405573 PMCID: PMC6206021 DOI: 10.3389/fmicb.2018.02515] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 10/02/2018] [Indexed: 12/20/2022] Open
Abstract
Thermotolerant Campylobacter species C. jejuni and C. coli are actually recognized as the major bacterial agent responsible for food-transmitted gastroenteritis. The most effective antimicrobials against Campylobacter are macrolides and some, but not all aminoglycosides. Among these, susceptibility to streptomycin is reduced by mutations in the ribosomal RPSL protein or by expression of ANT(6)-I aminoglycoside O-nucleotidyltransferases. The presence of streptomycin resistance genes was evaluated among streptomycin-resistant Campylobacter isolated from humans and animals by using PCR with degenerated primers devised to distinguish ant(6)-Ia, ant(6)-Ib and other ant-like genes. Genes encoding ANT(6)-I enzymes were found in all possible combinations with a major fraction of the isolates carrying a previously described ant-like gene, distantly related and belonging to the new ant(6)-I sub-family ant(6)-Ie. Among Campylobacter isolates, ant(6)-Ie was uniquely found functional in C. coli, as shown by gene transfer and phenotype expression in Escherichia coli, unlike detected coding sequences in C. jejuni that were truncated by an internal frame shift associated to RPSL mutations in streptomycin resistant strains. The genetic relationships of C. coli isolates with ANT(6)-Ie revealed one cluster of strains presented in bovine and humans, suggesting a circulation pathway of Campylobacter strains by consuming contaminated calf meat by bacteria expressing this streptomycin resistance element.
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Affiliation(s)
- Lorena Hormeño
- Departamento de Bioquímica, Biología Molecular y Genética, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | - María Ugarte-Ruiz
- Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense Madrid, Madrid, Spain
| | - Gonzalo Palomo
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | - Carmen Borge
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Córdoba, Córdoba, Spain
| | - Diego Florez-Cuadrado
- Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense Madrid, Madrid, Spain
| | - Santiago Vadillo
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | - Segundo Píriz
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | - Lucas Domínguez
- Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense Madrid, Madrid, Spain
| | - Maria J Campos
- MARE-Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, Peniche, Portugal
| | - Alberto Quesada
- Departamento de Bioquímica, Biología Molecular y Genética, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
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Sánchez-Benito R, Iglesias MR, Quijada NM, Campos MJ, Ugarte-Ruiz M, Hernández M, Pazos C, Rodríguez-Lázaro D, Garduño E, Domínguez L, Quesada A. Escherichia coli ST167 carrying plasmid mobilisable mcr-1 and bla CTX-M-15 resistance determinants isolated from a human respiratory infection. Int J Antimicrob Agents 2017; 50:285-286. [PMID: 28599866 DOI: 10.1016/j.ijantimicag.2017.05.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 05/08/2017] [Accepted: 05/25/2017] [Indexed: 10/19/2022]
Affiliation(s)
| | - M Rocío Iglesias
- Departamento de Bioquímica, Biología Molecular y Genética, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | - Narciso M Quijada
- Laboratorio de Biología Molecular y Microbiología, Instituto Tecnológico Agrario de Castilla y León, Valladolid, Spain
| | - Maria J Campos
- MARE-Marine and Environmental Sciences Centre, Instituto Politécnico de Leiria, Peniche, Portugal
| | - María Ugarte-Ruiz
- VISAVET Health Surveillance Centre, Universidad Complutense Madrid, Madrid, Spain
| | - Marta Hernández
- Laboratorio de Biología Molecular y Microbiología, Instituto Tecnológico Agrario de Castilla y León, Valladolid, Spain; Departamento de Ingeniería Agrícola y Forestal, Tecnología de los Alimentos, Escuela Técnica Superior de Ingenierías Agrarias, Universidad de Valladolid, Palencia, Spain
| | - Carmen Pazos
- Servicio de Microbiología, Hospital S. Pedro de Alcántara, Cáceres, Spain
| | - David Rodríguez-Lázaro
- Unidad de Microbiología, Departamento de Biotecnología y Ciencia de los Alimentos, Universidad de Burgos, Burgos, Spain
| | - Eugenio Garduño
- Servicio de Microbiología, Hospital Infanta Cristina, Badajoz, Spain
| | - Lucas Domínguez
- VISAVET Health Surveillance Centre, Universidad Complutense Madrid, Madrid, Spain; Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, Madrid, Spain
| | - Alberto Quesada
- Departamento de Bioquímica, Biología Molecular y Genética, Edificio de Bioquímica, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain; INBIO G+C, Universidad de Extremadura, Cáceres, Spain.
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10
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Hormeño L, Palomo G, Ugarte-Ruiz M, Porrero MC, Borge C, Vadillo S, Píriz S, Domínguez L, Campos MJ, Quesada A. Identification of the main quinolone resistance determinant in Campylobacter jejuni and Campylobacter coli by MAMA-DEG PCR. Diagn Microbiol Infect Dis 2015; 84:236-9. [PMID: 26658311 DOI: 10.1016/j.diagmicrobio.2015.11.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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: 09/02/2015] [Revised: 10/30/2015] [Accepted: 11/03/2015] [Indexed: 01/15/2023]
Abstract
Among zoonotic diseases, campylobacteriosis stands out as the major bacterial infection producing human gastroenteritis. Antimicrobial therapy, only recommended in critical cases, is challenged by resistance mechanisms that should be unambiguously detected for achievement of effective treatments. Quinolone (ciprofloxacin) resistance of Campylobacter jejuni and Campylobacter coli, the 2 main Campylobacter detected in humans, is conferred by the mutation gyrA C-257-T, which can be genotyped by several methods that require a previous identification of the pathogen species to circumvent the sequence polymorphism of the gene. A multiplex PCR, based on degenerated oligonucleotides, has been designed for unambiguous identification of the quinolone resistance determinant in Campylobacter spp. isolates. The method was verified with 249 Campylobacter strains isolated from humans (141 isolates) and from the 3 most important animal sources for this zoonosis: poultry (34 isolates), swine (38 isolates), and cattle (36 isolates). High resistance to ciprofloxacin, MIC above 4μg/mL, linked to the mutated genotype predicted by MAMA-DEG PCR (mismatch amplification mutation assay PCR with degenerated primers) was found frequently among isolates from the different hosts.
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Affiliation(s)
- Lorena Hormeño
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | - Gonzalo Palomo
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | - María Ugarte-Ruiz
- Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense Madrid, Madrid, Spain
| | - M Concepción Porrero
- Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense Madrid, Madrid, Spain
| | - Carmen Borge
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Córdoba, Córdoba, Spain
| | - Santiago Vadillo
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | - Segundo Píriz
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | - Lucas Domínguez
- Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense Madrid, Madrid, Spain
| | - Maria J Campos
- MARE-Marine and Environmental Sciences Centre, ESTM, Instituto Politécnico de Leiria, 2520-641 Peniche, Portugal.
| | - Alberto Quesada
- Departamento de Bioquímica, Biología Molecular y Genética, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
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Meireles P, Lucas R, Carvalho C, Fuertes R, Brito J, Campos MJ, Mendão L, Barros H. Incident risk factors as predictors of HIV seroconversion in the Lisbon cohort of men who have sex with men: first results, 2011-2014. ACTA ACUST UNITED AC 2015; 20. [PMID: 25884151 DOI: 10.2807/1560-7917.es2015.20.14.21091] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
HIV incidence in men who have sex with men (MSM) is increasing in western countries, including Portugal. We aimed to estimate HIV incidence and to assess how individual short-term changes in exposures over time predict seroconversion. We evaluated participants of an open cohort of HIV-negative MSM enrolled after testing at a community-based voluntary HIV counselling and testing centre in Lisbon. At each evaluation a structured questionnaire was completed and HIV status was ascertained using rapid followed by confirmatory testing. Between April 2011 and February 2014, 804 MSM were followed for a total of 893 person-years. Predictors of HIV seroconversion were identified using Poisson generalised linear regression. The overall seroincidence was 2.80/100 person-years (95% confidence interval: 1.89-4.14). Men who seroconverted had a higher mean number of tests per year. Seroconversions were significantly associated with partner disclosure of HIV status during follow-up, newly-adopted unprotected anal intercourse (UAI) with a steady partner and being newly-diagnosed with syphilis during follow-up. Likewise, sexual intercourse with HIV-positive men, having an HIV-positive steady partner at least once during follow-up and persistent UAI with occasional partners were predictors of seroconversion. High HIV incidence in this cohort is likely driven by short-term contextual and behavioural changes during follow-up.
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Affiliation(s)
- P Meireles
- EPIUnit, Institute of Public Health, University of Porto, Porto, Portugal
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Campos MJ, Ferreira JP, Block ME. Influence of an awareness program on Portuguese middle and high school students' perceptions of peers with disabilities. Psychol Rep 2014; 115:897-912. [PMID: 25386703 DOI: 10.2466/11.15.pr0.115c26z7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The ongoing topic of attitudes toward inclusion of students with disabilities in Physical Education (PE) classes emphases the role of schools as a primary place where attitudes toward disabilities can be changed. The effect of an awareness program on students' attitudes toward the inclusion of peers with disabilities in PE was examined, as well as variables such as sex, age, previous contact with disability, and competitiveness. The participants were 509 students (235 girls, 274 boys; M age = 13.3 yr., SD = 1.1, range = 11-16), who attended middle and high Portuguese schools. The awareness intervention comprised a one-week program (2 PE classes, 90 min. and 45 min.). Attitudes were assessed before and after the intervention. The awareness program appeared to have a positive influence on changing students' attitudes toward inclusion in PE.
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Affiliation(s)
- Maria J Campos
- 1 Faculty of Sport Science and Physical Education, University of Coimbra
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Carvalho C, Fuertes R, Lucas R, Martins A, Campos MJ, Mendão L, Schmidt AJ, Barros H. HIV testing among Portuguese men who have sex with men - results from the European MSM Internet Survey (EMIS). HIV Med 2013; 14 Suppl 3:15-8. [DOI: 10.1111/hiv.12058] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2013] [Indexed: 11/28/2022]
Affiliation(s)
| | - R Fuertes
- Grupo Português de Activistas sobre Tratamentos VIH/SIDA (GAT); Lisboa; Portugal
| | | | | | - MJ Campos
- Grupo Português de Activistas sobre Tratamentos VIH/SIDA (GAT); Lisboa; Portugal
| | - L Mendão
- Grupo Português de Activistas sobre Tratamentos VIH/SIDA (GAT); Lisboa; Portugal
| | - AJ Schmidt
- Sigma Research; Department of Social & Environmental Health Research; London School of Hygiene and Tropical Medicine; London; UK
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Castro R, Lopes Â, Fuertes R, Machado H, Rocha M, Jordão R, Brito J, Esteves J, Campos MJ, Pereira F. P5.085 Treponema Pallidum Antibodies Detection by a Point-Of-Care Test and RPR and TPHA Tests in MSM Attending a Community Based HIV Anonymous Center - Checkpoint LX. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.1129] [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: 11/03/2022]
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15
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Borges MA, Carmo MI, Sambo MR, Borges FC, Araújo CM, Campos MJ, Jacinto AM, Mansinho K, Leitão OC. Intramedullary tuberculoma in a patient with human immunodeficiency virus infection and disseminated multidrug-resistant tuberculosis: case report. Int J Infect Dis 1998; 2:164-7. [PMID: 9625611 DOI: 10.1016/s1201-9712(98)90121-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Affiliation(s)
- M A Borges
- Department of Internal Medicine, Hospital Egas Moniz, Lisbon, Portugal
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16
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Imura N, Otani SM, Campos MJ, Jardim Júnior EG, Zuolo ML. Bacterial penetration through temporary restorative materials in root-canal-treated teeth in vitro. Int Endod J 1997; 30:381-5. [PMID: 9588977 DOI: 10.1046/j.1365-2591.1997.00100.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [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]
Abstract
Seventy extracted single-rooted mandibular premolars were used in this study to determine the length of time needed for bacteria present in natural human saliva to penetrate through three commonly used temporary restorative materials and through the entire root canal system obturated with the lateral condensation technique. Five intact teeth with no decay were used in the negative control group and five teeth with extensive decay in communication with the canal, in the positive control group. The 60 teeth used in the experimental group were divided into three groups. In Group 1, the access cavities of 20 teeth were temporarily restored with gutta percha, in Group 2 with IRM and in Group 3 with Cavit-G. All 70 teeth were mounted individually where the crown was placed in contact with human saliva. All five teeth in the positive control group caused broth turbidity within 24 h. In contrast, broth in the negative control group remained clear throughout the entire experimental period. In the experimental group, the average time for broth contamination of access cavities closed with gutta percha, IRM and Cavit-G was 7.85, 12.95 and 9.80 days, respectively. The Kruskal-Wallis nonparametric test showed significant differences among the groups, while the multiple comparison test showed that the IRM group was statistically better than the gutta percha group when the average lengths of time for contamination were compared (P < 0.05).
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Affiliation(s)
- N Imura
- Microbiology Department, ICB, São Paulo University, Brazil
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17
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Vernon SM, Campos MJ, Haystead T, Thompson MM, DiCorleto PE, Owens GK. Endothelial cell-conditioned medium downregulates smooth muscle contractile protein expression. Am J Physiol 1997; 272:C582-91. [PMID: 9124302 DOI: 10.1152/ajpcell.1997.272.2.c582] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Smooth muscle cells (SMC) within atherosclerotic lesions proliferate and exhibit phenotypic modulation, but the contribution of vascular endothelium to this process is poorly understood. Our aim was to examine the effects of endothelial cell-conditioned medium (ECCM) on vascular SMC growth and differentiation. Rat aortic ECCM stimulated a ninefold increase in [3H]thymidine incorporation and downregulated smooth muscle-specific myosin heavy chain and alpha-actin synthesis in rat aortic SMC. These effects were not inhibited by antibodies to platelet-derived growth factor (PDGF)-BB or PDGF-AB or with a PDGF beta-receptor subunit. Treatment with PDGF-BB (at a concentration found in ECCM), PDGF-AA, basic fibroblast growth factor, endothelin-1, or transforming growth factor-beta did not reproduce these effects. The ECCM activities were sensitive to heat and trypsinization, were >30 kDa in molecular mass, and bound weakly to heparin-Sepharose. Our data indicate that cultured endothelial cells produce a factor(s) that downregulates contractile protein expression in SMC, which may contribute to SMC dedifferentiation and proliferation.
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MESH Headings
- Actins/metabolism
- Animals
- Antibodies/immunology
- Antibodies/pharmacology
- Becaplermin
- Cell Differentiation/drug effects
- Cell Division/drug effects
- Cells, Cultured
- Contractile Proteins/metabolism
- Culture Media, Conditioned/metabolism
- Culture Media, Conditioned/pharmacology
- Endothelium, Vascular/cytology
- Endothelium, Vascular/physiology
- Heparin/metabolism
- Hot Temperature
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/metabolism
- Myosin Heavy Chains/metabolism
- Peptide Fragments/pharmacology
- Platelet-Derived Growth Factor/immunology
- Proto-Oncogene Proteins c-sis
- Rats
- Rats, Sprague-Dawley
- Receptor, Platelet-Derived Growth Factor beta
- Receptors, Platelet-Derived Growth Factor/chemistry
- Trypsin/pharmacology
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Affiliation(s)
- S M Vernon
- Department of Medicine (Cardiology), University of Virginia School of Medicine, Charlottesville 22908, USA
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18
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Jaques AK, Arroja I, Araújo C, Azevedo J, Borges A, Santos I, Cabral A, Campos MJ, Mansinho K, Borges F. [The acquired immunodeficiency syndrome, hypertrophic myocardiopathy and multivalvular infectious endocarditis. Apropos a clinical case]. Rev Port Cardiol 1995; 14:53-8. [PMID: 7695955] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
We present a clinical case of a 33 years old young male, gypsy, intravenous drug abuser with heroine and cocaine and AIDS diagnosis. The clinical anamnesis was mainly fever and systolic heart murmur in a clinical scenario of AIDS. The two-dimensional echocardiographic study was clearly diagnostic of an hypertrophic obstructive cardiomyopathy of the left ventricle. This study showed also the presence of multiple vegetations of the mitral, aortic and pulmonic valves in a clinical setting of an acute Streptococcus Viridans infective endocarditis. In this case report we discuss the incidence of this type of multiple cardiac lesions and particularly the presence of this specific pathogenic agent in this high risk group of patients with intravenous drug abuse and systemic immunosuppression. We pointed out the rarity of these findings of left side valvular vegetations associated with this type of cardiomyopathy and the different factors related to infective endocarditis.
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Affiliation(s)
- A K Jaques
- Laboratório de Ecocardiografia, Hospital Egas Moniz, Lisboa
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19
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Amaral EC, Paretzke HG, Campos MJ, Pires do Rio MA, Franklin M. The contribution of soil adhesion to radiocaesium uptake by leafy vegetables. Radiat Environ Biophys 1994; 33:373-379. [PMID: 7708910 DOI: 10.1007/bf01210458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The Goiânia accident, Brazil, was used as an opportunity to quantify the contributions of different mechanisms, in particular mass loading, leading to caesium uptake by leafy vegetables in a semi-urban environment contaminated with 137Cs. Soil splash contributions of 70-90% were quantified for lettuce and 50-60% for green cole. Soil mass loadings of 130 and 340 mg.g-1 were estimated for lettuce and 120 and 150 mg.g-1 for green cole. The results call attention to the potential significant contribution of the soil splash to radionuclide uptake by plants which have the edible plant parts near the soil surface (within 30-40 cm) and low root uptake factors. For radiological assessment purposes it could also be necessary to consider the contamination of crops by this mechanism.
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Affiliation(s)
- E C Amaral
- CNEN-Instituto de Radioproteção e Dosimetria, Rio de Janeiro, Brazil
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20
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Abstract
We examined the potential of astemizole, a histamine H1-receptor antagonist that does not cross the blood-brain barrier, to reverse blood-retinal barrier leakage to albumin in streptozotocin diabetic rats. Four groups of nondiabetic and four groups of diabetic rats received vehicle or astemizole at dosages of 5, 10, or 20 mg/kg body weight for days 22-28 of a 28-day holding period. There were no significant differences in nondiabetic plasma-vitreous albumin ratios between animals receiving vehicle or any of the three astemizole dosages. Only diabetic rats receiving vehicle showed a significant (p < 0.05) 100% increase in the plasma-vitreous albumin ratio over their nondiabetic counterparts. Diabetic rats receiving either 5, 10, or 20 mg/kg astemizole exhibited total normalization of vitreous albumin accumulation, despite persistence of diabetes. These data indicate that astemizole, an H1-receptor antagonist that does not cross the blood-retinal barrier, is effective in reversing blood-retinal barrier leakage of albumin in experimental diabetes.
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Affiliation(s)
- T M Hollis
- Department of Biology, Mueller Laboratory, Pennsylvania State University, University Park 16802
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21
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Hollis TM, Gardner TW, Vergis GJ, Kirbo BJ, Butler C, Dull RO, Campos MJ, Enea NA. Antihistamines reverse blood-ocular barrier breakdown in experimental diabetes. J Diabet Complications 1988; 2:47-9. [PMID: 2898479 DOI: 10.1016/0891-6632(88)90029-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Retinal and other tissue histamine synthesis is increased in experimental diabetes; histamine infusion causes blood-ocular barrier breakdown in nondiabetic rats. We have examined the hypothesis that antihistamines prevent blood-ocular barrier breakdown in streptozotocin diabetes using male Sprague-Dawley rats held 28 days. During the last 7 days they were divided into these treatment groups: control (C), untreated diabetic (D), diabetic rats receiving diphenhydramine-HCl (B), diabetic rats receiving ranitidine (R) and diabetic rats receiving diphenhydramine and ranitidine (BR). Vitreous albumin content was measured 6 hr following fluorescein isothiocyanate bovine serum albumin (FITCBSA) injection. Data show that D had a 98.3% increase in vitreous body FITCBSA over C (p less than 0.05) while B and R showed respective decreases of 34.9% and 51.4% compared to D, R being significantly lower than D (p less than 0.05). BR showed a decrease of 71% (p less than 0.05) compared to D, and R and BR groups were not significantly different from C (p less than 0.05). Leakage into the vitreous was from the retina, not the ciliary body. These data indicate that 1) experimental diabetes results in elevated blood-ocular barrier permeability, which can be reversed by diphenhydramine-HCl and ranitidine; and 2) histamine H1- and H2-receptor activation and interaction by altered endogenous histamine metabolism may mediate blood-ocular barrier breakdown, implicating a pathogenic role of histamine in diabetic retinopathy.
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Affiliation(s)
- T M Hollis
- Department of Biology, Pennsylvania State University, University Park 16802
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