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De Oliveira R, Ferreira PRC, Neves C, Barreto C. Opioid-free mastectomy under thoracic epidural anesthesia-analgesia in a patient with critical tracheal stenosis: a case report. Rev Esp Anestesiol Reanim (Engl Ed) 2023; 70:300-304. [PMID: 36948497 DOI: 10.1016/j.redare.2023.03.002] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 04/15/2022] [Indexed: 03/24/2023]
Abstract
Mastectomy is traditionally performed under general anaesthesia and invasive ventilation, and is often complemented with regional techniques. In this setting, tracheal stenosis can pose a challenge to airway management. The aim of this report is to describe the successful management of a 68-year-old woman with severe subglottic tracheal stenosis undergoing mastectomy due to breast cancer. Surgery was performed without airway instrumentation under an opioid-free regimen consisting of thoracic epidural, propofol and dexmedetomidine perfusion, and non-opioid analgesics. Spontaneous ventilation and adequate perioperative analgesia were achieved. Opioid-free anaesthesia without airway instrumentation, consisting of thoracic epidural anaesthesia and sedation, is a good alternative in patients undergoing mastectomy in whom airway manipulation is best avoided.
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Affiliation(s)
- R De Oliveira
- Department of Anesthesiology, Centro Hospitalar Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal.
| | - P R C Ferreira
- Department of Anesthesiology, Centro Hospitalar Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal; Department of Medical Sciences, Universidade de Aveiro, Aveiro, Portugal
| | - C Neves
- Department of Anesthesiology, Centro Hospitalar Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal
| | - C Barreto
- Department of Anesthesiology, Centro Hospitalar Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal
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Tourvieilhe L, Jandot E, Quessada T, Barreto C, Marotte S, Heissat S, Poinsot P, Sierra-Torre A, Lachaux A, Loras-Duclaux I, Rabilloud M, Peretti N. Augmentation des infections liées à la voie veineuse centrale chez les enfants en nutrition parentérale au long cours hébergés en soins de suite et de réadaptation par rapport au domicile. NUTR CLIN METAB 2022. [DOI: 10.1016/j.nupar.2021.12.127] [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: 11/28/2022]
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Azevedo J, Martins M, Castilho P, Barreto C, Pereira A, Macedo A. Pertinence and development of cibd – clinical interview for bipolar disorder. Eur Psychiatry 2021. [PMCID: PMC9480172 DOI: 10.1192/j.eurpsy.2021.1646] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
IntroductionBipolar disorder (BD) is frequently underdiagnosed and due to poor screening, the average time between onset of symptoms and diagnosis is more than 7-years (Mantere et al., 2004). Improper diagnosis has serious consequences in intervention (Ghaemi et al., 2001), and previous assessment instruments are now considered insufficient to detect intervention changes, and to provide a more functional and integrated view of BD.ObjectivesOur study aims to develop a new DSM-5 based Clinical Interview for Bipolar Disorder (CIBD), providing criteria to diagnose BD, but also the individual’s perceptions dealing with BD symptoms. This interview follows the same structure of CIPD (Martins et al., 2015), which has shown acceptability by the participants and experts.MethodsCIBD was developed by a multidisciplinary team considering the DSM-5 criteria for Bipolar Disorders. There was a thorough research regarding assessment and evaluation of BD, and several suggestions from an international task force of specialist working with BD patients were considered, when writing the questions for the interview. A detailed description of CIBD development is presented. The authors of the interview have extended experience in the management and assessment of BD patients, and CIBD is now being assessed by a wider non-related panel, regarding pertinence and clarity.ResultsPreliminary assessment and qualitative feedback from participants that were interviewed is shown, with an overall positive feedback.ConclusionsCIBD assesses both the diagnosis/presence of mood episodes (hypo/mania, and depressive) and symptoms’ psychosocial correlates. CIBD detects subtle changes caused by intervention adding a much needed recovery focused perspective.DisclosureNo significant relationships.
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Constant C, Descalço A, Silva A, Pereira L, Barreto C, Bandeira T. P169 Implementing nitrogen Multiple Breath Washout - a feasibility study. J Cyst Fibros 2020. [DOI: 10.1016/s1569-1993(20)30504-x] [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: 11/16/2022]
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Boon M, Calvo-Lerma J, Claes I, Havermans T, Asseiceira I, Bulfamante A, Garriga M, Masip E, van Schijndel BAM, Fornes V, Barreto C, Colombo C, Crespo P, Vicente S, Janssens H, Hulst J, Witters P, Nobili R, Pereira L, Ruperto M, Van der Wiel E, Mainz JG, De Boeck K, Ribes-Koninckx C. Use of a mobile application for self-management of pancreatic enzyme replacement therapy is associated with improved gastro-intestinal related quality of life in children with Cystic Fibrosis. J Cyst Fibros 2020; 19:562-568. [PMID: 32335023 DOI: 10.1016/j.jcf.2020.04.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 11/20/2019] [Revised: 04/02/2020] [Accepted: 04/04/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Most patients with cystic fibrosis (CF) suffer from pancreatic insufficiency (PI), leading to fat malabsorption, malnutrition, abdominal discomfort and impaired growth. Pancreatic enzyme replacement therapy (PERT) is effective, but evidence based guidelines for dose adjustment are lacking. A mobile app for self-management of PERT was developed in the context of the HORIZON 2020 project MyCyFAPP. It contains an algorithm to calculate individual PERT-doses for optimal fat digestion, based on in vitro and in vivo studies carried out in the same project. In addition, the app includes a symptoms diary, educational material, and it is linked to a web tool allowing health care professionals to evaluate patient's data and provide feedback. METHODS A 6-month open label prospective multicenter interventional clinical trial was performed to assess effects of using the app on gastro-intestinal related quality of life (GI QOL), measured by the CF-PedsQL-GI (shortened, CF specific version of the Pediatric Quality of Life Inventory, Gastrointestinal Symptoms Module). RESULTS One hundred and seventy-one patients with CF and PI between 2 and 18 years were recruited at 6 European CF centers. Self-reported CF-PedsQL-GI improved significantly from month 0 (M0) (84.3, 76.4-90.3) to month 6 (M6) (89.4, 80.35-93.5) (p< 0.0001). Similar improvements were reported by parents. Lower baseline CF-PedsQL-GI was associated with a greater improvement at M6 (p < 0.001). CONCLUSIONS The results suggest that the MyCyFAPP may improve GI QOL for children with CF. This tool may help patients to improve self-management of PERT, especially those with considerable GI symptoms.
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Affiliation(s)
- M Boon
- Department of Pediatrics, Center for Cystic Fibrosis, University Hospital Leuven, Leuven, Belgium.
| | - J Calvo-Lerma
- Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - I Claes
- Department of Pediatrics, Center for Cystic Fibrosis, University Hospital Leuven, Leuven, Belgium
| | - T Havermans
- Department of Pediatrics, Center for Cystic Fibrosis, University Hospital Leuven, Leuven, Belgium
| | - I Asseiceira
- Associação para a Investigação e Desenvolvimento da Faculdade de Medicina, Lisbon, Portugal
| | - A Bulfamante
- Università degli Studi di Milano, Fondazione IRCCS Ca" Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - M Garriga
- Unidad de Fibrosis Quística, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - E Masip
- Gastroenterology and Pediatric cystic Fibrosis Unit, La Fe Hospital, Valencia, Spain
| | - B A M van Schijndel
- Department of Pediatrics, div of Gastro-Enterology, Erasmus MC- Sophia Children's Hospital, University Hospital Rotterdam, the Netherlands
| | - V Fornes
- Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - C Barreto
- Associação para a Investigação e Desenvolvimento da Faculdade de Medicina, Lisbon, Portugal
| | - C Colombo
- Università degli Studi di Milano, Fondazione IRCCS Ca" Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - P Crespo
- Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - S Vicente
- Unidad de Fibrosis Quística, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - H Janssens
- Department of Pediatrics, div Respiratory Medicine and Allergology, Erasmus MC-Sophia Children's Hospital, University Hospital Rotterdam, the Netherlands
| | - J Hulst
- Department of Pediatrics, div of Gastro-Enterology, Erasmus MC- Sophia Children's Hospital, University Hospital Rotterdam, the Netherlands
| | - P Witters
- Department of Pediatrics, Center for Cystic Fibrosis, University Hospital Leuven, Leuven, Belgium
| | - R Nobili
- Università degli Studi di Milano, Fondazione IRCCS Ca" Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - L Pereira
- Associação para a Investigação e Desenvolvimento da Faculdade de Medicina, Lisbon, Portugal
| | - M Ruperto
- Unidad de Fibrosis Quística, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - E Van der Wiel
- Department of Pediatrics, div Respiratory Medicine and Allergology, Erasmus MC-Sophia Children's Hospital, University Hospital Rotterdam, the Netherlands
| | - J G Mainz
- Cystic Fibrosis Center for Children and Adults, Jena University Hospital, Germany; Cystic Fibrosis Center Brandenburg Medical School (MHB), University, Brandenburg an der Havel, Germany
| | - K De Boeck
- Department of Pediatrics, Center for Cystic Fibrosis, University Hospital Leuven, Leuven, Belgium
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Barreto C, Vilela DAR, Houri BF, Lara LB, Torres ACD, Silva ASG, Castro Filho RPL, Costa CS, Martins NRS. New Isospora and Host Species in Brazilian Passerines. Braz J Poult Sci 2020. [DOI: 10.1590/1806-9061-2019-1070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- C Barreto
- Instituto Brasileiro de Meio Ambiente e Recursos Naturais Renováveis, Brazil
| | - DAR Vilela
- Instituto Brasileiro de Meio Ambiente e Recursos Naturais Renováveis, Brazil
| | - BF Houri
- Faculdade de Ciências Médicas de Minas Gerais, Brazil
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Martins T, Vaz A, Asseiceira I, Mexia S, Pereira L, Lopes C, Azevedo P, Barreto C, Sampaio D. P317 Nutritional status and body composition in a cystic fibrosis population: comparison with a healthy population. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30610-1] [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: 11/28/2022]
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Kuczewski E, Khanafer N, Amour S, Bruchon C, Debaille E, Barreto C, Grando J, Lamblin G, Doret-Dion M, Vanhems P. Réévaluation du seuil actuel d’adaptation de l’antibioprophylaxie en fonction du poids pour la prévention des infections du site opératoire en gynécologie. Med Mal Infect 2019. [DOI: 10.1016/j.medmal.2019.04.281] [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: 10/26/2022]
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Kuczewski E, Khanafer N, Amour S, Bruchon C, Debaille E, Barreto C, Grando J, Lamblin G, Doret-Dion M, Vanhems P. Réévaluation du seuil actuel d’adaptation de l’antibioprophylaxie en fonction du poids pour la prévention des infections du site opératoire en gynécologie. Med Mal Infect 2019. [DOI: 10.1016/j.medmal.2019.04.280] [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: 12/01/2022]
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Boon M, Calvo-Lermo J, Claes I, Havermans T, Fornes V, Asseiceira I, Bulfamente A, Garriga M, Massip E, Walet S, Barreto C, Colombo C, Crespo P, Janssens H, Ruperto M, Hulst J, Nobili R, Pereira L, Van der Wiel E, Vicente S, De Boeck K, Ribes-Koninckx C. ePS5.08 MyCyFAPP project: use of a mobile application for self-management of PERT improves gastrointestinal related quality of life in children with cystic fibrosis. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30286-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Serras I, Oliveira J, Pereira L, Barreto C. Cystic fibrosis – How we reach adult life. Pulmonology 2019; 25:60-61. [DOI: 10.1016/j.pulmoe.2019.02.001] [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] [Received: 05/16/2018] [Accepted: 12/01/2018] [Indexed: 10/27/2022] Open
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Barreto C, Amour S, Kuczewski E, Dupuis O, Huissoud C, Gaucherand P, Gerbier-Colomban S, Girard R, Vanhems P. Maternal infection rates: Surveillance in three obstetric units of a French University Hospital group in 2016. Rev Epidemiol Sante Publique 2018. [DOI: 10.1016/j.respe.2018.05.407] [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] Open
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Martins T, Vaz A, Asseiceira I, Mexia S, Pereira L, Lopes C, Almeida Nunes P, Azevedo P, Barreto C, Sampaio D. P199 Nutritional status and eating behaviour in a CF population. J Cyst Fibros 2018. [DOI: 10.1016/s1569-1993(18)30494-6] [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: 10/14/2022]
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Barreto C, Aguiar P, Silverio F, Yaksic M, Manfrivato M, Naraki L, Souza E, Tamura P, Kobayashi K, Zapata L, Padua T, Silva F, Spada M, Parmigiani R, Yamaguchi N. P3.03-019 Activity of PARP Inhibitor in NSCLC with Germline and Somatic Mutation and in Silico Chemotherapy Lethality. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1646] [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: 11/25/2022]
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Sousa S, Pita T, Feliciano J, Soares-Castro P, Morad M, Barreto C, Pereira L, Cavaco J, Santos P, Leitão J. 117 Exploitation of immunogenic proteins of the Burkholderia cepacia complex to design new therapeutic strategies. J Cyst Fibros 2017. [DOI: 10.1016/s1569-1993(17)30481-2] [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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Boon M, Claes I, Havermans T, Asseiceira I, Bulfamante A, Garriga M, Martinez-Barona S, Woodcock S, Verhoeven K, Barreto C, Calvo-Lerma J, Colombo C, Crespo P, Hulst J, Masip E, Nobili R, Pereira L, Ruperto M, De Boeck K, Ribes-Koninckx C. 341 MyCyFAPP project: assessment and validation of the PEDsQL GI symptom scale in children with CF. J Cyst Fibros 2017. [DOI: 10.1016/s1569-1993(17)30679-3] [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: 11/16/2022]
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Lerma JC, Hulst J, Asseiceira I, Claes I, Garriga M, Colombo C, Ribes-Koninckx C, Walet S, Martins T, Boon M, Ruperto M, Speziali C, Woodcock S, Witters P, Masip E, Barreto C, de Boeck C. WS02.1 Nutritional status, nutrients intake and enzymatic supplements in a European CF cohort: a cross-sectional overview. J Cyst Fibros 2016. [DOI: 10.1016/s1569-1993(16)30066-2] [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: 10/21/2022]
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Silva AM, Descalço A, Salgueiro M, Pereira L, Barreto C, Bandeira T, Ferreira R. Respiratory sleep disturbance in children and adolescents with cystic fibrosis. Rev Port Pneumol (2006) 2016; 22:202-8. [PMID: 27052354 DOI: 10.1016/j.rppnen.2016.02.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 11/10/2015] [Revised: 12/22/2015] [Accepted: 02/06/2016] [Indexed: 12/23/2022] Open
Abstract
UNLABELLED Sleep disturbance has been described in cystic fibrosis (CF) patients as relevant to clinical and lung function predictive factors helping to improve the diagnosis and early intervention. Related paediatric studies are scarce. OBJECTIVE To describe respiratory sleep disturbance (RSD) and its association with spirometric indices in a population of CF children. A second aim was to determine if spirometric indices and wake-time SpO2 are predictors of sleep disturbance. METHODS A cross-sectional study involving 33CF paediatric patients. All participants underwent in-lab polysomnography (PSG), pulse oximetry and spirometry. A standardized sleep questionnaire was completed for each patient. Two subgroups were considered: I - Normal (FEV1>-1.64 z-score); II - Obstructed (FEV1≤-1.64 z-score). RESULTS Participant's median age was 12 (6-18) years, 16 (48.5%) were male. Twenty-nine patients (87.9%) presented sleep complaints. Sleep efficiency was reduced; sleep latency and waking after sleep onset (WASO) increased. N1 increased, N2, N3, REM and awakenings were normal. The apnoea-hypopnoea index was 0.6/h (sd 0.9); respiratory disturbance index (RDI) was 6.6/h (sd 5.2). Mean awaking (97% (sd 1.1)) and sleep SpO2 (95% (sd 2.7)) were normal; mean nocturnal oximetry desaturation index was 2.36/h; minimal nocturnal SpO2 was 89% (sd 4.1). We found associations between mean nocturnal SPO2 and mean values of FEV1 (r=0.528; p=0.002) and FEF25-75 (r=0.426; p=0.013). There were significant differences in nocturnal SpO2 between normal and obstructed patients (p<0.000). PSG data correlated with the questionnaire answers for night awakenings and WASO (p=0.985) and difficult breathing during sleep and RDI (p=0.722). This study points to most CF children having sleep complaints, and highlights the correlation between subjective assessment of sleep and PSG and spirometric results. Awake-time SpO2 and spirometric values are possible risk predictors for nocturnal desaturation.
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Affiliation(s)
- A M Silva
- Pediatric Lung Function and Sleep Laboratory, Hospital de Santa Maria, CHLN, Lisbon Academic Medical Center, Portugal.
| | - A Descalço
- Pediatric Lung Function and Sleep Laboratory, Hospital de Santa Maria, CHLN, Lisbon Academic Medical Center, Portugal.
| | - M Salgueiro
- Pediatric Lung Function and Sleep Laboratory, Hospital de Santa Maria, CHLN, Lisbon Academic Medical Center, Portugal.
| | - L Pereira
- Respiratory Unit, Department of Pediatrics, Hospital de Santa Maria, CHLN, Lisbon Academic Medical Center, Portugal.
| | - C Barreto
- Department of Pediatrics, Hospital de Santa Maria, CHLN, Lisbon Academic Medical Center, Portugal.
| | - T Bandeira
- Pediatric Lung Function and Sleep Laboratory, Hospital de Santa Maria, CHLN, Lisbon Academic Medical Center, Portugal; Respiratory Unit, Department of Pediatrics, Hospital de Santa Maria, CHLN, Lisbon Academic Medical Center, Portugal.
| | - R Ferreira
- Pediatric Lung Function and Sleep Laboratory, Hospital de Santa Maria, CHLN, Lisbon Academic Medical Center, Portugal; Respiratory Unit, Department of Pediatrics, Hospital de Santa Maria, CHLN, Lisbon Academic Medical Center, Portugal.
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Mexia S, Asseiceira I, Rodrigues T, Pereira L, Barreto C. 219 Nutritional intervention in paediatric cystic fibrosis patients leads to improvement of nutritional status – Preliminary results of a prospective study. J Cyst Fibros 2015. [DOI: 10.1016/s1569-1993(15)30394-5] [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: 11/17/2022]
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Sousa R, Pereira L, Cavaco J, Silva T, Vaz L, Rocha H, Vilarinho L, Barreto C. ePS01.2 First year evaluation of the Portuguese pilot neonatal screening for cystic fibrosis. J Cyst Fibros 2015. [DOI: 10.1016/s1569-1993(15)30132-6] [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] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Santo RE, Sousa R, Pereira L, Barreto C. 50 Microbiological characterization of patients in Lisbon cystic fibrosis centre. J Cyst Fibros 2014. [DOI: 10.1016/s1569-1993(14)60187-9] [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: 11/30/2022]
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Silva A, Salgueiro M, Descalço A, Pereira L, Barreto C, Ferreira R. 137 Sleep disturbances in CF children: looking for severity predictors. J Cyst Fibros 2014. [DOI: 10.1016/s1569-1993(14)60273-3] [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: 10/25/2022]
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Romão P, Jotta R, Sousa R, Pereira L, Barreto C. 127 Characterization of bacteria isolated from the respiratory tract of pediatric cystic fibrosis patients followed in a CF specialized center. J Cyst Fibros 2013. [DOI: 10.1016/s1569-1993(13)60269-6] [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: 10/26/2022]
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Pereira L, Cavaco J, Felix M, Gonçalves J, Nunes S, Freitas C, Silva T, Barreto C. 14 Genetic characterization of the pediatric patients from southern and central Portugal and islands. J Cyst Fibros 2013. [DOI: 10.1016/s1569-1993(13)60157-5] [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: 11/25/2022]
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Pinto MV, Castanhinha S, Pereira L, Lopes A, Barreto C. 249 Liver disease in children with cystic fibrosis – The contribution of ultrasound evaluation. J Cyst Fibros 2013. [DOI: 10.1016/s1569-1993(13)60390-2] [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: 10/26/2022]
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Asseiceira I, Mexia S, Pinheiro J, Pereira L, Barreto C. 269 Nutritional assessment and dietary intake in children and teenagers with cystic fibrosis. J Cyst Fibros 2013. [DOI: 10.1016/s1569-1993(13)60410-5] [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: 10/26/2022]
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Vinhas J, Barreto C, Assunção J, Parreira L, Vaz A. Treatment of Anaemia with Erythropoiesis-Stimulating Agents in Patients with Chronic Kidney Disease Does Not Lower Mortality and May Increase Cardiovascular Risk: A Meta-Analysis. Nephron Clin Pract 2012. [DOI: 10.1159/000345158] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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De Boeck K, Kent L, Davies J, Derichs N, Amaral M, Rowe SM, Middleton P, de Jonge H, Bronsveld I, Wilschanski M, Melotti P, Danner-Boucher I, Boerner S, Fajac I, Southern K, de Nooijer RA, Bot A, de Rijke Y, de Wachter E, Leal T, Vermeulen F, Hug MJ, Rault G, Nguyen-Khoa T, Barreto C, Proesmans M, Sermet-Gaudelus I. CFTR biomarkers: time for promotion to surrogate end-point. Eur Respir J 2012; 41:203-16. [DOI: 10.1183/09031936.00057512] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Castanhinha S, Pereira L, Aguiar S, Ramirez M, Rodrigues T, Barreto C, Melo Cristino J. 117 Diagnosis of Pseudomonas aeruginosa infection using serology in children with cystic fibrosis. J Cyst Fibros 2012. [DOI: 10.1016/s1569-1993(12)60287-2] [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: 11/29/2022]
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Abbott J, Hart A, Havermans T, Matossian A, Goldbeck L, Barreto C, Bergsten-Brucefors A, Besier T, Catastini P, Lupi F, Staab D. Measuring health-related quality of life in clinical trials in cystic fibrosis. J Cyst Fibros 2011; 10 Suppl 2:S82-5. [DOI: 10.1016/s1569-1993(11)60013-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Pinto M, Pereira L, Rodrigues T, Barreto C. Cystic fibrosis survival: the factors we can't control. J Cyst Fibros 2010. [DOI: 10.1016/s1569-1993(10)60436-5] [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: 11/15/2022]
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Pinto M, Pereira L, Rodrigues T, Barreto C. Cystic fibrosis in Portugal: a survival study. J Cyst Fibros 2010. [DOI: 10.1016/s1569-1993(10)60437-7] [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: 11/17/2022]
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Fermeiro J, Castanhinha S, Pereira L, Barreto C. Long term impact of azithromycin in paediatric cystic fibrosis patients. J Cyst Fibros 2009. [DOI: 10.1016/s1569-1993(09)60259-9] [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: 11/24/2022]
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López-Piñeiro A, Albarrán A, Nunes JMR, Barreto C. Short and medium-term effects of two-phase olive mill waste application on olive grove production and soil properties under semiarid mediterranean conditions. Bioresour Technol 2008; 99:7982-7987. [PMID: 18462936 DOI: 10.1016/j.biortech.2008.03.051] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2008] [Revised: 03/18/2008] [Accepted: 03/22/2008] [Indexed: 05/26/2023]
Abstract
A five-year field study was conducted to evaluate the potential use of oiled and de-oiled two-phase olive mill waste (TPOMW and DTPOMW, respectively) as soil amendment on a representative olive grove soil: a Cutanic Luvisol. Treatments included a non-amended control, TPOMW1, TPOMW2, DTPOMW1 and DTPOMW2 (30, 60, 27 and 54Mgha(-1) dry weight equivalent). Significant increases (P<0.05) in organic carbon, total N, available P and K, and aggregate stability were observed in the amended soils. Leaf analysis showed significant increases in N, P, and K concentrations in treated plots after the two first years of TPOMW or DTPOMW amendments. Also, a general increase in olive production was observed in the treated plots, this increase being higher in the TPOMW1 and DTPOMW1 treated soils. After five years of repeated TPOMW and DTPOMW application, the increase in yield was 29%, 9.8%, 30%, and 19% for TPOMW1, TPOMW2, DTPOMW1, and DTPOMW2, respectively. Raw TPOMW and DTPOMW have the potential to be valuable soil amendments and source of organic matter, with a positive effect on olive yield, and closing the cycle of residues-resources.
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Affiliation(s)
- A López-Piñeiro
- Area de Edafología y Química Agrícola, Facultad de Ciencias, Universidad de Extremadura, Avda de Elvas S/N, 06071 Badajoz, Spain.
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Reis P, Fermeiro J, Castanhinha S, Rodrigues T, Pereira L, Barreto C. Clinical difference between cystic fibrosis patients colonized with different bacteria. J Cyst Fibros 2008. [DOI: 10.1016/s1569-1993(08)60222-2] [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: 11/29/2022]
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Castanhinha S, Reis P, Fermeiro J, Pereira L, Barreto C. Experience of inhaled tobramycin: impact in microbiological and clinical parameters in patients with cystic fibrosis. J Cyst Fibros 2008. [DOI: 10.1016/s1569-1993(08)60139-3] [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: 11/16/2022]
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38
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Pereira L, Silva-Costa C, Pinto F, Barreto C, Ramirez M, Melo-Cristino J. Classical criteria for chronic infection predict the maintenance of the same Staphylococcus aureus strain in cystic fibrosis patients. J Cyst Fibros 2008. [DOI: 10.1016/s1569-1993(08)60167-8] [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: 10/22/2022]
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39
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Fermeiro J, Reis P, Castanhinha S, Pereira L, Barreto C. Methicillin-resistant Staphylococcus aureus infection – what impact in cystic fibrosis patients morbidity? J Cyst Fibros 2008. [DOI: 10.1016/s1569-1993(08)60172-1] [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: 10/22/2022]
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Amaral MD, Pacheco P, Beck S, Farinha CM, Penque D, Nogueira P, Barreto C, Lopes B, Casals T, Dapena J, Gartner S, Vásquez C, Pérez-Frías J, Olveira C, Cabanas R, Estivill X, Tzetis M, Kanavakis E, Doudounakis S, Dörk T, Tümmler B, Girodon-Boulandet E, Cazeneuve C, Goossens M, Blayau M, Verlingue C, Vieira I, Féréc C, Claustres M, des Georges M, Clavel C, Birembaut P, Hubert D, Bienvenu T, Adoun M, Chomel JC, De Boeck K, Cuppens H, Lavinha J. Cystic fibrosis patients with the 3272-26A>G splicing mutation have milder disease than F508del homozygotes: a large European study. J Med Genet 2001; 38:777-83. [PMID: 11732487 PMCID: PMC1734751 DOI: 10.1136/jmg.38.11.777] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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42
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Luppi CG, Eluf-Neto J, Sabino E, Buccheri V, Barreto C, Ungaro AB. Late diagnosis of HIV infection in women seeking counseling and testing services in São Paulo, Brazil. AIDS Patient Care STDS 2001; 15:391-7. [PMID: 11483166 DOI: 10.1089/108729101750301942] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 11/12/2022] Open
Abstract
We investigated whether women positive for human immunodeficiency virus (HIV) infection were late in seeking an anonymous HIV counseling and testing service, and the factors associated with a low CD4 count, in São Paulo, Brazil. Seventy-one consecutive HIV-1-seropositive women were interviewed by means of a structured questionnaire. Blood samples were collected for CD4+ T-lymphocytes count and determination of HIV-1 subtypes. Hepatitis C, syphilis, human T-cell lymphotrophic virus type I (HTLV-I), and HTLV-II infections were assessed by serologic tests. More than 70% of the women had less than 500 CD4+ cells/mm3 (20% below 200). Low CD4 count was significantly associated with sex work history, condom use in the last 6 months, and seropositivity to HTLV-I and syphilis. There was no relation between low CD4 count and HIV-1 subtypes. These results indicate that in Sao Paulo many women are seeking an anonymous testing service late in the course of HIV infection. The main purposes of anonymous HIV testing services - early diagnosis of infection, and counseling to prevent infection - are not being achieved. Another strategy for reducing the interval between infection and diagnosis in women must be addressed.
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Affiliation(s)
- C G Luppi
- Departamento de Medicina Preventiva-Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
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43
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Casals T, Pacheco P, Barreto C, Giménez J, Ramos MD, Pereira S, Pinheiro JA, Cobos N, Curvelo A, Vázquez C, Rocha H, Séculi JL, Pérez E, Dapena J, Carrilho E, Duarte A, Palacio AM, Nunes V, Lavinha J, Estivill X. Missense mutation R1066C in the second transmembrane domain of CFTR causes a severe cystic fibrosis phenotype: study of 19 heterozygous and 2 homozygous patients. Hum Mutat 2000; 10:387-92. [PMID: 9375855 DOI: 10.1002/(sici)1098-1004(1997)10:5<387::aid-humu9>3.0.co;2-c] [Citation(s) in RCA: 9] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We report the clinical features of 21 unrelated cystic fibrosis (CF) patients from Portugal and Spain, who carry the mutation R1066C in the CFTR gene. The current age of the patients was higher in the R1066C/any mutation group (P < 0.01), as compared to the deltaF508/deltaF508 group. Poor values for lung radiological involvement (Chrispin-Norman) and general status (Shwachman-Kulcycki) were observed in the R1066C/any mutation group (P < 0.005 and P < 0.0004). A slightly, but not significantly worse lung function was found in the R1066C/any mutation group when compared with the deltaF508/deltaF508 patients. No significant differences were detected regarding the age at diagnosis, sweat Cl-values, or percentiles of height and weight between the two groups. Neither were significant differences observed regarding sex, meconium ileus (4.7% vs. 11.1%), dehydration (10.5% vs. 14.7%), or pancreatic insufficiency (PI) (100% vs. 97.8%). The proportion of patients with lung colonization by bacterial pathogens was slightly, but not significantly higher in the R1066C/any mutation group (70.0%), as compared with the deltaF508/deltaF508 group (57.5%). Other clinical complications were significantly more frequent in the R1066C/any mutation patients(P < 0.02) than in the deltaF508/deltaF508 group. The two homozygous R1066C/R1066C patients died at the ages of 3 months and 7 years. The data presented in this study clearly demonstrate that the R1066C mutation is responsible for a severe phenotype similar to that observed in homozygous deltaF508 patients. The poor clinical scores and complications of patients with the R1066C mutation are probably related to their slightly longer survival.
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Affiliation(s)
- T Casals
- Molecular Genetics Department (IRO), Hospital Duran i Reynals, Barcelona, Catalonia, Spain
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Richau JA, Leitão JH, Correia M, Lito L, Salgado MJ, Barreto C, Cescutti P, Sá-Correia I. Molecular typing and exopolysaccharide biosynthesis of Burkholderia cepacia isolates from a Portuguese cystic fibrosis center. J Clin Microbiol 2000; 38:1651-5. [PMID: 10747161 PMCID: PMC86514 DOI: 10.1128/jcm.38.4.1651-1655.2000] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.4] [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: 12/12/2022] Open
Abstract
This work describes the first epidemiological survey of Burkholderia cepacia involved in pulmonary infections among the Portuguese population with cystic fibrosis (CF) who attended the major CF treatment Center in Lisbon at Sta. Maria Hospital from 1995 to the end of 1997. The characterization of the genomic relatedness of the isolates was based on the analysis of their ribopatterns (with EcoRI) followed by construction of a ribotype-based phylogenetic tree. This study was complemented with macrorestriction fragment analysis by pulsed-field gel electrophoresis. After optimization of the solid growth medium, we found that exopolysaccharide (EPS) production by B. cepacia CF isolates is not as rare a phenomenon as was thought before; indeed, 70% of the isolates examined were EPS producers.
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Affiliation(s)
- J A Richau
- Centro de Engenharia Biológica e Química, Instituto Superior Técnico, 1049-001 Lisbon
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Beck S, Penque D, Garcia S, Gomes A, Farinha C, Mata L, Gulbenkian S, Gil-Ferreira K, Duarte A, Pacheco P, Barreto C, Lopes B, Cavaco J, Lavinha J, Amaral MD. Cystic fibrosis patients with the 3272-26A-->G mutation have mild disease, leaky alternative mRNA splicing, and CFTR protein at the cell membrane. Hum Mutat 1999; 14:133-44. [PMID: 10425036 DOI: 10.1002/(sici)1098-1004(1999)14:2<133::aid-humu5>3.0.co;2-t] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.9] [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: 12/26/2022]
Abstract
We characterized the 3272-26A-->G mutation in the cystic fibrosis transmembrane conductance regulator (CFTR) gene, creating an alternative acceptor splice site in intron 17a, that competes with the normal one, although we predict from consensus values, with lower efficiency. We analyzed five Cystic Fibrosis (CF) Portuguese patients with the 3272-26A-->G/F508del genotype. Besides clinical and haplotype characterization of those patients, we report here results from CFTR transcript analysis in nasal brushings from all five patients. RT-PCR analysis supports alternative splicing in all patients and carriers, but not in controls. By sequencing, we determined that the alternative transcript includes 25 nucleotides from intron 17a, which predictively cause frameshift and a premature stop codon. The use of this alternative splice site causes a reduction in the levels of normal transcripts from the allele with this mutation and, most probably, of normal protein as well. By immunocytochemistry of both epithelial primary cell cultures and slices from CF polyps, CFTR protein is detected at the cell membrane, with three different antibodies. Ussing chamber analysis of one nasal polyp shows a high sodium absorption, characteristic of CF. Altogether, the results suggest that the main defect caused by the 3272-26A-->G mutation is a reduction in normal CFTR transcripts and protein and therefore this mutation should be included in class V, according to Zielenski and Tsui.
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Affiliation(s)
- S Beck
- Centro de Genética Humana, Instituto Nacional de Saúde, Lisboa, Portugal
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46
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Casals T, Pacheco P, Barreto C, Giménez J, Ramos M, Pereira S, Pinheiro J, Cobos N, Curvelo A, Vázquez C, Rocha H, Séculi J, Pérez E, Dapena J, Carrilho E, Duarte A, Palacio A, Nunes V, Lavinha J, Estivill X. Missense mutation R1066C in the second transmembrane domain of CFTR causes a severe cystic fibrosis phenotype: Study of 19 heterozygous and 2 homozygous patients. Hum Mutat 1997. [DOI: 10.1002/(sici)1098-1004(1997)10:5<387::aid-humu9>3.3.co;2-v] [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: 12/30/2022]
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47
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Abstract
Differential elongation of growth plates is the process by which growth-plate chondrocytes translate the same sequence of gene regulation into the appropriate timing pattern for a given rate of elongation. While some of the parameters associated with differential growth are known, the purpose of this study was to test the hypothesis that eight independent variables are involved. We tested this hypothesis by considering four different growth plates in 28-day-old Long-Evans rats. Temporal parameters were provided by means of oxytetracycline and bromodeoxyuridine labeling techniques. Stereological parameters were measured with standard techniques. For all four growth plates, the calculated number of new chondrocytes produced per day approximated the number of chondrocytes lost per day at the chondro-osseous junction. This suggests that the proposed equations and associated variables represent a comprehensive set of variables defining differential growth. In absolute numbers, the proximal tibial growth plate produced about four times as many chondrocytes per day as the proximal radial growth plate (16,400 compared with 3,700). In the proximal tibia, 9% of growth is contributed by cellular division; 32%, by matrix synthesis throughout the growth plate; and 59%, by chondrocytic enlargement during hypertrophy. In the more slowly elongating growth plates, the relative contribution to elongation from cellular enlargement decreases from 59 to 44%, with a relative increase in contribution from matrix synthesis ranging from 32% in the proximal tibia 49% in the proximal radius. This study suggests that differential growth is best depicted as a complex interplay among cellular division, matrix synthesis, and cellular enlargement during hypertrophy. Differential growth is best explained by considering a set of eight independent variables, seven of which vary from growth plate to growth plate. Thus, this study confirms the importance of cellular hypertrophy during elongation and adds to our understanding of the importance of locally mediated regulatory systems controlling growth-plate activity.
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Affiliation(s)
- N J Wilsman
- Department of Comparative Biosciences, University of Wisconsin-Madison 53706, USA.
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48
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Da Silva LC, Madruga CL, Carrilho FJ, Pinho JR, Saéz-Alquezar A, Santos C, Bassit L, Barreto C, Fonseca LE, Alves VA, Leitão R, Vianna R, Cardoso RA, França AV, Gayotto LC. Spontaneous hepatitis B surface antigen clearance in a long-term follow-up study of patients with chronic type B hepatitis. Lack of correlation with hepatitis C and D virus superinfection. J Gastroenterol 1996; 31:696-701. [PMID: 8887037 DOI: 10.1007/bf02347619] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We investigated the frequency of HBsAg clearance and the possible role of viral superinfection in a long-term follow-up of 184 patients with chronic hepatitis B (CHB). Our subjects were 184 patients with chronic hepatitis B and the follow-up was 12-216 months (mean 66.2 +/- 53.7 months). The investigative methods used were: immunoenzymatic assays for HBV, HCV, HDV, and HIV markers; polymerase chain reaction (PCR) for HBV DNA; and liver biopsy and immunoperoxidase. During the follow-up, 20 of the 184 patients cleared serum HBsAg. A comparison of patients with persistent HBsAg(group I) and of those who cleared this marker (group II) showed a significant difference in mortality (P = 0.002) between the two groups and a tendency to a more severe exacerbation (flare) in group II (P = 0.07). Antibodies to hepatitis C and D virus as well as antibodies to HIV were equally distributed in both groups. Thirteen patients (7.9%) from group I, but none from group II, subsequently developed hepatocellular carcinoma. These results suggest that the frequency of spontaneous clearance of HBsAg during chronic HBV infection is low. No determinant factor for the clearance was found, including the presence of liver cirrhosis. Serum HBV DNA was undetectable by PCR after clearance in 16 out of 17 patients.
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Affiliation(s)
- L C Da Silva
- Department of Gastroenterology, University of São Paulo School of Medicine, Brazil
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Duarte A, Amaral M, Barreto C, Pacheco P, Lavinha J. Complex cystic fibrosis allele R334W-R1158X results in reduced levels of correctly processed mRNA in a pancreatic sufficient patient. Hum Mutat 1996; 8:134-9. [PMID: 8844211 DOI: 10.1002/(sici)1098-1004(1996)8:2<134::aid-humu5>3.0.co;2-b] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [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: 02/02/2023]
Abstract
CFTR alleles containing two mutations have been very rarely found in cystic fibrosis (CF) patients. They provide an opportunity to study the effect of two in cis-interacting gene defects on gene expression. Here, we describe a three-generation CF family with a complex CFTR allele that has not been previously described, containing the missense mutation R334W in exon 7 and the nonsense mutation R1158X in exon 19. Lymphocyte RNA analysis showed that (1) the mRNA corresponding to the complex allele is present although at markedly reduced levels; and (2) the nonsense mutation does not lead to detectable skipping of exon 19. The clinical picture of the patients with the genotype R334W-R1158X/delta F508 is characterized by pancreatic sufficiency and an atypical course of the disease.
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Affiliation(s)
- A Duarte
- Departamento de Genética Humana, Instituto Nacional de Saúde Dr. Ricardo Jorge, Lisboa, Portugal
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Abstract
In growing mammals there is a positive linear relationship between the mean hypertrophic chondrocyte volume and the rate of bone elongation. This suggests that the control of chondrocytic volume in the growth plate, is a major determinant in controlling bone elongation in mammals. In the present study the existence of such a relationship was tested for in birds. A scheme of fluorochrome labelling was devised to enable direct measurement of bone elongation per unit time. Four weight-bearing growth plates from two-week-old mallard ducklings and the corresponding four growth plates from two-week-old leghorn chicks were studied. Growth plate cartilage was fixed in the presence of ruthenium hexamine trichloride and embedded in Epon araldite. Estimates of mean cell volume, v(chondr), and mean cubic intercept (l3) were calculated by applying the stereological relationship: v(chondr) = (pi/3) x (l3). Regression analysis revealed a positive linear relationship between the two parameters, rate of bone elongation and mean hypertrophic cell volume in both species (squared correlation statistics: 65 per cent for mallards, 54 per cent for leghorns). There was a wide range in rates of bone elongation among growth plates studied (318 to 1418 microns 24 h-1 for mallards, 77 to 445 microns 24 h-1 for leghorns) and compared to mammals (such as rabbits, rats, swine and dogs), a small range in mean cell volume (2709 to 4786 micron3 for mallards, 3663 to 5719 micron3 for leghorns).(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- C Barreto
- University of Wisconsin-Madison, School of Veterinary Medicine 53706
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