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Matta Coelho C, Guimarães J, Bracchi I, Xavier Moreira N, Pinheiro C, Ferreira P, Pestana D, Barreiros Mota I, Cortez A, Prucha C, Martins C, Pinto E, Almeida A, Delerue-Matos C, Dias CC, Moreira-Rosário A, Ribeiro de Azevedo LF, Cruz Fernandes V, Ramalho C, Calhau C, Brantsæter AL, Costa Leite J, Keating E. Noncompliance to iodine supplementation recommendation is a risk factor for iodine insufficiency in Portuguese pregnant women: results from the IoMum cohort. J Endocrinol Invest 2022; 45:1865-1874. [PMID: 35635644 DOI: 10.1007/s40618-022-01813-7] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 04/27/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE After a recommendation for iodine supplementation in pregnancy has been issued in 2013 in Portugal, there were no studies covering iodine status in pregnancy in the country. The aim of this study was to assess iodine status in pregnant women in Porto region and its association with iodine supplementation. METHODS A cross-sectional study was conducted at Centro Hospitalar Universitário São João, Porto, from April 2018 to April 2019. Pregnant women attending the 1st trimester ultrasound scan were invited to participate. Exclusion criteria were levothyroxine use, gestational age < 10 and ≥ 14 weeks, non-evolutive pregnancy at recruitment and non-signing of informed consent. Urinary iodine concentration (UIC) was measured in random spot urine by inductively coupled plasma-mass spectrometry. RESULTS Median UIC was 104 μg/L (IQR 62-189) in the overall population (n = 481) of which 19% had UIC < 50 µg/L. Forty three percent (n = 206) were not taking an iodine-containing supplement (ICS) and median UIC values were 146 µg/L (IQR 81-260) and 74 µg/L (IQR 42-113) in ICS users and non-users, respectively (p < 0.001). Not using an ICS was an independent risk factor for iodine insufficiency [adjusted OR (95% CI) = 6.00 (2.74, 13.16); p < 0.001]. Iodised salt use was associated with increased median iodine-to-creatinine ratio (p < 0.014). CONCLUSIONS A low compliance to iodine supplementation recommendation in pregnancy accounted for a mild-to-moderately iodine deficiency. Our results evidence the need to support iodine supplementation among pregnant women in countries with low household coverage of iodised salt. Trial registration number NCT04010708, registered on the 8th July 2019.
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Affiliation(s)
- C Matta Coelho
- CINTESIS@RISE, Department Biomedicine, Unit of Biochemistry, Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal
| | - J Guimarães
- CINTESIS@RISE, Department Biomedicine, Unit of Biochemistry, Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal
| | - I Bracchi
- CINTESIS@RISE, Department Biomedicine, Unit of Biochemistry, Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal
| | - N Xavier Moreira
- CINTESIS@RISE, Faculty of Medicine, University of Porto, Porto, Portugal
- Fluminense Federal University, Niterói, Rio de Janeiro, Brasil
| | - C Pinheiro
- CINTESIS@RISE, Department Biomedicine, Unit of Biochemistry, Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal
| | - P Ferreira
- Faculdade de Ciências da Nutrição e Alimentação, Universidade do Porto, Porto, Portugal
| | - D Pestana
- CINTESIS@RISE, Nutrition and Metabolism, NOVA Medical School│FCM, Universidade Nova de Lisboa, Porto, Portugal
| | - I Barreiros Mota
- CINTESIS@RISE, Nutrition and Metabolism, NOVA Medical School│FCM, Universidade Nova de Lisboa, Porto, Portugal
| | - A Cortez
- Medicina Laboratorial Dr. Carlos Torres, Porto, Portugal
| | - C Prucha
- Department of Obstetrics, Centro Hospitalar Universitário S. João, Porto, Portugal
| | - C Martins
- Department of Obstetrics, Centro Hospitalar Universitário S. João, Porto, Portugal
| | - E Pinto
- REQUIMTE//LAQV, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
- Department of Environmental Health, School of Health, P.Porto, Porto, Portugal
| | - A Almeida
- REQUIMTE//LAQV, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - C Delerue-Matos
- REQUIMTE/LAQV, Instituto Superior de Engenharia, Politécnico do Porto, Porto, Portugal
| | - C C Dias
- CINTESIS@RISE, Department of Community Medicine, Information and Health Decision Sciences (MEDCIDS), Faculty of Medicine, University of Porto, Porto, Portugal
| | - A Moreira-Rosário
- CINTESIS@RISE, Nutrition and Metabolism, NOVA Medical School│FCM, Universidade Nova de Lisboa, Porto, Portugal
| | - L F Ribeiro de Azevedo
- CINTESIS@RISE, Department of Community Medicine, Information and Health Decision Sciences (MEDCIDS), Faculty of Medicine, University of Porto, Porto, Portugal
| | - V Cruz Fernandes
- REQUIMTE/LAQV, Instituto Superior de Engenharia, Politécnico do Porto, Porto, Portugal
| | - C Ramalho
- Department of Obstetrics, Centro Hospitalar Universitário S. João, Porto, Portugal
- Department of Ginecology-Obstetrics and Pediatrics, Faculty of Medicine, University of Porto, Porto, Portugal
- Instituto de Investigação e Inovação em Saúde, i3S, Universidade Do Porto, Porto, Portugal
| | - C Calhau
- CINTESIS@RISE, Nutrition and Metabolism, NOVA Medical School│FCM, Universidade Nova de Lisboa, Porto, Portugal
| | - A-L Brantsæter
- Division of Climate and Environmental Health, Norwegian Institute of Public Health, Oslo, Norway
| | - J Costa Leite
- CINTESIS@RISE, Faculty of Medicine, University of Porto, Porto, Portugal
| | - E Keating
- CINTESIS@RISE, Department Biomedicine, Unit of Biochemistry, Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal.
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Reynolds SS, Woltz P, Keating E, Neff J, Elliott J, Hatch D, Yang Q, Granger BB. Results of the CHlorhexidine Gluconate Bathing implementation intervention to improve evidence-based nursing practices for prevention of central line associated bloodstream infections Study (CHanGing BathS): a stepped wedge cluster randomized trial. Implement Sci 2021; 16:45. [PMID: 33902653 PMCID: PMC8074470 DOI: 10.1186/s13012-021-01112-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 04/07/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Central line-associated bloodstream infections (CLABSIs) result in approximately 28,000 deaths and approximately $2.3 billion in added costs to the U.S. healthcare system each year, and yet, many of these infections are preventable. At two large health systems in the southeast United States, CLABSIs continue to be an area of opportunity. Despite strong evidence for interventions to prevent CLABSI and reduce associated patient harm, such as use of chlorhexidine gluconate (CHG) bathing, the adoption of these interventions in practice is poor. The primary objective of this study was to assess the effect of a tailored, multifaceted implementation program on nursing staff's compliance with the CHG bathing process and electronic health record (EHR) documentation in critically ill patients. The secondary objectives were to examine the (1) moderating effect of unit characteristics and cultural context, (2) intervention effect on nursing staff's knowledge and perceptions of CHG bathing, and (3) intervention effect on CLABSI rates. METHODS A stepped wedged cluster-randomized design was used with units clustered into 4 sequences; each sequence consecutively began the intervention over the course of 4 months. The Grol and Wensing Model of Implementation helped guide selection of the implementation strategies, which included educational outreach visits and audit and feedback. Compliance with the appropriate CHG bathing process and daily CHG bathing documentation were assessed. Outcomes were assessed 12 months after the intervention to assess for sustainability. RESULTS Among the 14 clinical units participating, 8 were in a university hospital setting and 6 were in community hospital settings. CHG bathing process compliance and nursing staff's knowledge and perceptions of CHG bathing significantly improved after the intervention (p = .009, p = .002, and p = .01, respectively). CHG bathing documentation compliance and CLABSI rates did not significantly improve; however, there was a clinically significant 27.4% decrease in CLABSI rates. CONCLUSIONS Using educational outreach visits and audit and feedback implementation strategies can improve adoption of evidence-based CHG bathing practices. TRIAL REGISTRATION ClinicalTrials.gov, NCT03898115 , Registered 28 March 2019.
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Affiliation(s)
- Staci S Reynolds
- Duke University School of Nursing, 307 Trent Drive, Durham, NC, 27710, USA.
- Duke University Hospital, 2310 Erwin Road, Durham, NC, 27710, USA.
| | - Patricia Woltz
- WakeMed Health & Hospitals, 3000 New Bern Avenue, Raleigh, NC, 27610, USA
| | - Edward Keating
- Duke University Hospital, 2310 Erwin Road, Durham, NC, 27710, USA
| | - Janice Neff
- WakeMed Health & Hospitals, 3000 New Bern Avenue, Raleigh, NC, 27610, USA
| | - Jennifer Elliott
- WakeMed Health & Hospitals, 3000 New Bern Avenue, Raleigh, NC, 27610, USA
| | - Daniel Hatch
- Duke University School of Nursing, 307 Trent Drive, Durham, NC, 27710, USA
| | - Qing Yang
- Duke University School of Nursing, 307 Trent Drive, Durham, NC, 27710, USA
| | - Bradi B Granger
- Duke University School of Nursing, 307 Trent Drive, Durham, NC, 27710, USA
- Duke University Health System, 2310 Erwin Road, Durham, NC, 27710, USA
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Finn BP, Millar SR, Cronin K, Crowley J, S D, Jennings R, Keating E, Murphy C, O'Donovan D, Shanahan P, Short C, Mullane D, Ni Chroinin M. Improvements in Clinical Outcomes in Children with Cystic Fibrosis aged Six and 16 years. Ir Med J 2020; 113:119. [PMID: 35574822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Aims Our aim was to assess if outcomes for cystic fibrosis (CF) patients at six & sixteen years of age have improved in the last 17 years looking at FEV1, BMI and death. Methods A retrospective observational study using a prospectively maintained database of CF patients at Cork University Hospital. Results 84 patients were included in the 16-year-old data and 89 patients were included in the six-year-old data. The mean FEV1 and BMI (16 years) for the 2002-2007 group was 72.9±21.0% and 18.9±2.53 respectively, 2008-2013 group was 75.4±27.2% and 19.8±2.7 and for the 2014-2018 group was 95.2±16.0% and 22.9±4.1. The percentage of patients (16 years) with chronic pseudomonas status was 37.9% (11/30) in the 2002-2007 group, 51.6 % (16/31) in the 2008-2013 group and 4.2% (1/24) in the 2014-2018 group. The relationship between FEV1 and FVC with BMI remained significant in multivariate analysis (P <0.001). The mean FEV1 (six years) for the 2002-2007 group was 90.7±16.1%, 2008-2013 group was 99.3±17.9% and for the 2014-2018 group was 100.9±15.8%. Conclusions Improvements in FEV1 and BMI aged six and 16 years are notable as well as a significant decline in the number of patients with chronic pseudomonas.
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Affiliation(s)
- B P Finn
- Department of Paediatrics and Child Health, Cork University Hospital
| | - S R Millar
- School of Public Health, University College Cork, Ireland
| | - K Cronin
- Department of Dietetics, Cork University Hospital
| | - J Crowley
- Department of Dietetics, Cork University Hospital
| | - Dunne S
- Department of Dietetics, Cork University Hospital
| | - R Jennings
- Department of Paediatrics and Child Health, Cork University Hospital
| | - E Keating
- Department of Paediatrics and Child Health, Cork University Hospital
| | - C Murphy
- Department of Paediatrics and Child Health, Cork University Hospital
| | - D O'Donovan
- Department of Paediatrics and Child Health, Cork University Hospital
| | - P Shanahan
- Department of Physiotherapy, Cork University Hospital
| | - C Short
- Department of Respiratory Medicine, Cork University Hospital
| | - D Mullane
- Department of Paediatrics and Child Health, Cork University Hospital
| | - M Ni Chroinin
- Department of Paediatrics and Child Health, Cork University Hospital
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Finn B, Millar S, Cronin K, Crowley J, Dunne S, Jennings R, Keating E, Murphy C, Donovan D, Shanahan P, Short C, Mullane D, Ni Chroinin M. WS10-3 Improvements in outcomes in children with cystic fibrosis aged 16 years in Cork University Hospital from 2002 to 2018. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30174-2] [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: 11/30/2022]
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Honarbakhsh S, Schilling RJ, Dhillon G, Ullah W, Keating E, Providencia R, Baker V, Chow A, Earley MJ, Hunter RJ. P1171Validation of a novel mapping system and utility for mapping complex atrial tachycardias. Europace 2018. [DOI: 10.1093/europace/euy015.656] [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: 11/13/2022] Open
Affiliation(s)
- S Honarbakhsh
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - R J Schilling
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - G Dhillon
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - W Ullah
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - E Keating
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - R Providencia
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - V Baker
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - A Chow
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - M J Earley
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - R J Hunter
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
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Honarbakhsh S, Schilling RJ, Orini M, Providencia R, Keating E, Finlay M, Sporton S, Chow A, Earley MJ, Lambiase PD, Hunter RJ. P1151Structural remodeling and conduction velocity dynamics in the human left atrium: relationship with reentrant mechanisms sustaining atrial tachycardia and atrial fibrillation. Europace 2018. [DOI: 10.1093/europace/euy015.637] [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: 11/12/2022] Open
Affiliation(s)
- S Honarbakhsh
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - R J Schilling
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - M Orini
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - R Providencia
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - E Keating
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - M Finlay
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - S Sporton
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - A Chow
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - M J Earley
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - P D Lambiase
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - R J Hunter
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
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Honarbakhsh S, Schilling RJ, Providencia R, Keating E, Chow A, Sporton S, Lowe MD, Earley MJ, Hunter RJ. P1152Characterization of localized drivers that play a mechanistic role in persistent atrial fibrillation. Europace 2018. [DOI: 10.1093/europace/euy015.638] [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: 11/14/2022] Open
Affiliation(s)
- S Honarbakhsh
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - R J Schilling
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - R Providencia
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - E Keating
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - A Chow
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - S Sporton
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - M D Lowe
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - M J Earley
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
| | - R J Hunter
- Barts Health NHS Trust, Electrophysiology, London, United Kingdom
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Honarbakhsh S, Hunter RJ, Dhillon G, Ullah W, Keating E, Providencia R, Chow A, Earley MJ, Schilling RJ. Validation of a novel mapping system and utility for mapping complex atrial tachycardias. J Cardiovasc Electrophysiol 2018; 29:395-403. [PMID: 29364554 DOI: 10.1111/jce.13437] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 11/30/2017] [Accepted: 12/15/2017] [Indexed: 11/28/2022]
Abstract
INTRODUCTION This study sought to validate a novel wavefront mapping system utilizing whole-chamber basket catheters (CARTOFINDER, Biosense Webster). The system was validated in terms of (1) mapping atrial-paced beats and (2) mapping complex wavefront patterns in atrial tachycardia (AT). METHODS AND RESULTS Patients undergoing catheter ablation for AT and persistent AF were included. A 64-pole-basket catheter was used to acquire unipolar signals that were processed by CARTOFINDER mapping system to generate dynamic wavefront propagation maps. The left atrium was paced from four sites to demonstrate focal activation. ATs were mapped with the mechanism confirmed by conventional mapping, entrainment, and response to ablation. Twenty-two patients were included in the study (16 with AT and 6 with AF initially who terminated to AT during ablation). In total, 172 maps were created with the mapping system. It correctly identified atrial-pacing sites in all paced maps. It accurately mapped 9 focal/microreentrant and 18 macroreentrant ATs both in the left and right atrium. A third and fourth observer independently identified the sites of atrial pacing and the AT mechanism from the CARTOFINDER maps, while being blinded to the conventional activation maps. CONCLUSIONS This novel mapping system was effectively validated by mapping focal activation patterns from atrial-paced beats. The system was also effective in mapping complex wavefront patterns in a range of ATs in patients with scarred atria. The system may therefore be of practical use in the mapping and ablation of AT and could have potential for mapping wavefront activations in AF.
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Affiliation(s)
- S Honarbakhsh
- Barts Heart Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, United Kingdom
| | - R J Hunter
- Barts Heart Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, United Kingdom
| | - G Dhillon
- Barts Heart Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, United Kingdom
| | - W Ullah
- Barts Heart Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, United Kingdom
| | - E Keating
- Barts Heart Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, United Kingdom
| | - R Providencia
- Barts Heart Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, United Kingdom
| | - A Chow
- Barts Heart Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, United Kingdom
| | - M J Earley
- Barts Heart Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, United Kingdom
| | - R J Schilling
- Barts Heart Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, United Kingdom
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Honarbakhsh S, Schilling RJ, Providencia R, Dhillon G, Sawhney V, Martin CA, Keating E, Finlay M, Ahsan S, Chow A, Earley MJ, Hunter RJ. 79Panoramic atrial mapping with basket catheters: a quantitative analysis to optimise practice, patient selection and catheter choice. Europace 2017. [DOI: 10.1093/europace/eux283.074] [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: 11/13/2022] Open
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Honarbakhsh S, Schilling RJ, Orini M, Srinivasan NT, Providencia R, Keating E, Finlay M, Chow A, Earley MJ, Lambiase PD, Hunter RJ. 80Relationship of conduction velocity and conduction velocity dynamics to bipolar voltage and drivers in atrial arrhythmia. Europace 2017. [DOI: 10.1093/europace/eux283.075] [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: 11/14/2022] Open
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Honarbakhsh S, Schilling RJ, Dhillon G, Ullah W, Keating E, Providencia R, Chow A, Earley MJ, Hunter RJ. 6A novel mapping system for panoramic mapping of the left atrium: validation and application to detect and characterise localised sources maintaining AF. Europace 2017. [DOI: 10.1093/europace/eux283.146] [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: 11/13/2022] Open
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Honarbakhsh S, Ullah W, Keating E, Dhillon G, Finlay M, Earley MJ, Schilling RJ, Hunter RJ. P246Validation of a novel high resolution mapping system for panoramic mapping of the left atrium: potential for mapping drivers in atrial fibrillation. Europace 2017. [DOI: 10.1093/ehjci/eux171.003] [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: 11/14/2022] Open
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Ronan N, Harrison M, Wurfel M, Goss C, Shanahan F, O'Callaghan G, O'Donovan D, Jennings R, Murphy C, Keating E, Chroinin MN, Murphy D, Mullane D, Eustace J, Plant B. WS04.3 A comparison of Toll-like receptor mediated innate immune response in children with cystic fibrosis and an age matched control cohort. J Cyst Fibros 2016. [DOI: 10.1016/s1569-1993(16)30080-7] [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: 11/26/2022]
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Martel F, Guedes M, Keating E. Effect of polyphenols on glucose and lactate transport by breast cancer cells. Breast Cancer Res Treat 2016; 157:1-11. [PMID: 27097608 DOI: 10.1007/s10549-016-3794-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 04/08/2016] [Indexed: 01/26/2023]
Abstract
One of the cancer molecular hallmarks is a deviant energetic metabolism, known as the Warburg effect, whereby the rate of glucose uptake is significantly increased and a high rate of glycolysis and lactic acid production occurs even when oxygen is present-"aerobic lactatogenesis". Accordingly, GLUT1 and MCT1, which are the main glucose and lactate transporters in cancer cells, respectively, have been proposed as oncogenes and are currently seen as potential therapeutic targets in cancer treatment. Polyphenols, commonly contained in fruits and vegetables, have long been associated with a protective role against cancer. Generally considered as nontoxic, dietary polyphenols are considered ideal chemopreventive and possibly chemotherapeutic agents. Several mechanisms of action of polyphenols in breast cancer cells have been proposed including modulation of intracellular signaling, induction of apoptosis through redox regulation or modulation of epigenetic alterations. Additionally, in vitro studies have shown that several polyphenols act as specific inhibitors of glucose transport in breast cancer cell lines and an association between their anticarcinogenic effect and inhibition of glucose cellular uptake has been described. Also, some polyphenols were found to inhibit lactate transport. Importantly, some polyphenols behave as inhibitors of both glucose and lactate cellular uptake by breast cancer cells and these compounds are thus very interesting in the context of a chemopreventive effect, because they deplete breast cancer cells of their two most important energy suppliers. So, the antimetabolic effect of polyphenols should be regarded as a mechanism of action contributing to their chemopreventive/chemotherapeutic potential in relation to breast cancer.
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Affiliation(s)
- F Martel
- Department of Biochemistry, Faculty of Medicine, University of Porto, Al. Prof. Hernâni Monteiro, 4200-319, Porto, Portugal.
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.
| | - M Guedes
- Department of Biochemistry, Faculty of Medicine, University of Porto, Al. Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
| | - E Keating
- Department of Biochemistry, Faculty of Medicine, University of Porto, Al. Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
- CINTESIS, Center for Research in Health Technologies and Information Systems, University of Porto, 4200-319, Porto, Portugal
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Costa MA, Keating E, Fonseca BM, Teixeira NA, Correia-da-Silva G. 2-Arachidonoylglycerol impairs human cytotrophoblast cells syncytialization: influence of endocannabinoid signalling in placental development. Mol Cell Endocrinol 2015; 399:386-94. [PMID: 25199616 DOI: 10.1016/j.mce.2014.09.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 09/04/2014] [Accepted: 09/04/2014] [Indexed: 11/16/2022]
Abstract
A balanced cytotrophoblast cell turnover is crucial for placental development and anomalies in this process associated with gestational diseases. The endocannabinoid system (ECS) has emerged as a new player in several biological processes. However, its influence during placental development is still unknown. We report here the expression of the endocannabinoid 2-arachidonoylglycerol (2-AG) main metabolic enzymes in human cytotrophoblasts and syncytiotrophoblast. We also showed that 2-AG induced a decrease in placental alkaline phosphatase activity, human chorionic gonadotropin secretion and Leptin mRNA levels. Moreover, 2-AG reduced glial cell missing 1 and syncytin-2 transcription and the number of nuclei in syncytium. These effects were mediated by cannabinoid receptors and may result from 2-AG inhibition of the cAMP/PKA signalling pathway. Our data suggest that 2-AG may interfere with the biochemical and morphological differentiation of human cytotrophoblasts, through a CB receptor-dependent mechanism, shedding light on a role for the ECS in placental development.
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Affiliation(s)
- M A Costa
- Departamento de Ciências Biológicas, Laboratório de Bioquímica, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal; Instituto de Biologia Celular e Molecular da Universidade do Porto (IBMC), Porto, Portugal
| | - E Keating
- Departmento de Bioquímica U38FCT, Faculdade de Medicina, Universidade do Porto, Porto, Portugal; Center for Biotechnology and Fine Chemistry, School of Biotechnology, Portuguese Catholic University, Porto, Portugal
| | - B M Fonseca
- Departamento de Ciências Biológicas, Laboratório de Bioquímica, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal; Instituto de Biologia Celular e Molecular da Universidade do Porto (IBMC), Porto, Portugal
| | - N A Teixeira
- Departamento de Ciências Biológicas, Laboratório de Bioquímica, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal; Instituto de Biologia Celular e Molecular da Universidade do Porto (IBMC), Porto, Portugal
| | - G Correia-da-Silva
- Departamento de Ciências Biológicas, Laboratório de Bioquímica, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal; Instituto de Biologia Celular e Molecular da Universidade do Porto (IBMC), Porto, Portugal.
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Costa MA, Fonseca BM, Keating E, Teixeira NA, Correia-da-Silva G. 2-arachidonoylglycerol effects in cytotrophoblasts: metabolic enzymes expression and apoptosis in BeWo cells. Reproduction 2014; 147:301-11. [PMID: 24324206 DOI: 10.1530/rep-13-0563] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The major endocannabinoid (eCB) 2-arachidonoylglycerol (2-AG) is a member of the endocannabinoid system (ECS) that participates in cell proliferation and apoptosis, important events for the homoeostasis of biological systems. The formation of placenta is one of the most important stages of pregnancy and its development requires highly regulated proliferation, differentiation and apoptosis of trophoblasts. Anomalies in these processes are associated with gestational pathologies. In this work, we aimed to study the involvement of 2-AG in cytotrophoblast cell turnover. We found that 2-AG biosynthetic (diacylglycerol lipase A) and degradative (monoacylglycerol lipase) enzymes are expressed in human cytotrophoblasts and in BeWo cells. We also found that 2-AG induces a decrease in cell viability in a time- and concentration-dependent manner and exerts antiproliferative effects. The loss of cell viability induced by a 48-h treatment with 2-AG (10 μM) was accompanied by chromatin fragmentation and condensation, morphological features of apoptosis. Additionally, 2-AG induced an increase in caspase 3/7 and 9 activities, a loss of mitochondrial membrane potential (Δψm) and an increase in reactive oxygen species (ROS)/reactive nitrogen species (RNS) generation, suggesting the activation of the mitochondrial pathway. Moreover, whereas Δψm loss and ROS/RNS generation were significantly attenuated by the antagonists of both the cannabinoid receptors 1 and 2 (CB1 and CB2), the increase in caspase 3/7 and 9 activities and loss of cell viability were reversed only by the antagonist of CB2 receptor; the blockage of the eCB membrane transporter and the depletion of cholesterol failed to reverse the effects of 2-AG. Therefore, this work supports the importance of cannabinoid signalling during cytotrophoblast cell turnover and that its deregulation may be responsible for altered placental development and poor pregnancy outcomes.
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Affiliation(s)
- M A Costa
- Laboratório de Bioquímica, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira n.° 228, 4050-313 Porto, Portugal
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Keating E, Lemos C, Monteiro R, Azevedo I, Martel F. The effect of a series of organic cations upon the plasmalemmal serotonin transporter, SERT. Life Sci 2004; 76:103-19. [PMID: 15501483 DOI: 10.1016/j.lfs.2004.08.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2004] [Accepted: 08/28/2004] [Indexed: 11/17/2022]
Abstract
The aim of this work was to test the effect of a series of organic cations upon the activity of the plasma membrane serotonin transporter (SERT). The experiments were performed using the JAR cell line that constitutively expresses high levels of SERT, and rat intestine, whose mucosal epithelial cells also express SERT. Initial rates of (3)H-serotonin ((3)H-5HT; 200 nM) uptake were not changed by some of the organic cations tested (guanidine, N-methylnicotinamide, choline, atenolol, caffeine and theophylline), but were slightly (15-30%) inhibited by some other organic cations, at the highest concentrations tested (thiamine (3 mM), cimetidine (1 mM) and tetraethylammonium (3 mM)). On the other hand, some other organic cations reduced, in a concentration-dependent manner, uptake of (3)H-5HT by JAR cells (IC(50)s of 0.3, 1.3, 5.4, 89.3, 460 and 748 microM for quinidine, verapamil, propranolol, amiloride, nicotine and clonidine, respectively). Quinidine, clonidine and amiloride seem to be competitive inhibitors of (3)H-5HT uptake, whereas verapamil, nicotine and propranolol appear to be uncompetitive or non-competitive inhibitors. Moreover, quinidine, verapamil and propranolol trans-inhibited (3)H-5HT uptake, whereas clonidine, nicotine and amiloride were devoid of effect. Finally, these six organic cations were able to significantly increase the serosal-to-mucosal apparent permeability (P(app)) to (3)H-5HT of rat jejunum, ileum and colon. In conclusion, human and rat SERT-mediated transport is inhibited by several distinct organic cations, some of which are therapeutic agents or drugs of abuse. Knowledge on which organic cations interfere with SERT-mediated transport of 5HT will have major implications in tissues where 5HT plays important physiological roles (eg. central nervous system, intestine and placenta).
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Affiliation(s)
- E Keating
- Department of Biochemistry (U38-FCT), Faculty of Medicine, 4200-319 Porto, Portugal
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Abstract
The aim of this work was to characterize the uptake of 1-methyl-4-phenylpyridinium (MPP(+)) in the JAR human choriocarcinoma cell line. As JAR cells, as well as the placenta, express the neuronal serotonin transporter (SERT), a comparison between the uptake of (3)H-MPP(+) and (3)H-serotonin ((3)H-5HT) was made. Specific uptake of (3)H-MPP(+) (0.2 microM ) was temperature-, Na(+)- and potential-dependent. 5HT and MPP(+) reduced (3)H-MPP(+) specific uptake (for 5HT, its IC(50) was found to be 4 microM ). The SERT inhibitors desipramine and fluoxetine also inhibited (3)H-MPP(+) specific uptake (with IC(50)s of 189 and 0.92 microM, respectively). The inhibitors of the extraneuronal monoamine transporter (EMT) and of the organic cation transporter type 2 (OCT2), corticosterone and decynium22, had no effect on (3)H-MPP(+) specific uptake, but cyanine863 concentration-dependently reduced it (with an IC(50) of 23 microM ). Specific uptake of (3)H-5HT (0.2 microM ) by JAR cells was temperature-, Na(+)- and potential-dependent. 5HT, MPP(+), desipramine and fluoxetine concentration-dependently inhibited (3)H-5HT specific uptake (with IC(50)s of 1.9 microM, 50 microM, 0.17 microM and 0.046 microM, respectively). Corticosterone showed no effect, but decynium22 and cyanine863 significantly reduced(3) H-5HT specific uptake. For cyanine863, its IC(50) was found to be 11 microM. In conclusion, the results suggest that: (1) uptake of (3)H-5HT by JAR cells occurs exclusively through SERT; (2) uptake of(3) H-MPP(+) by JAR cells involves SERT and also another transporter; (3) neither EMT nor OCT2 are functionally present in JAR cells.
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Affiliation(s)
- F Martel
- Department of Biochemistry (U38-FCT), Faculty of Medicine, 4200-319, Porto, Portugal
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McIntyre NS, Huctwith CM, Taylor KF, Keating E, Petersen NO, Brennenstühl AM. Uses of SIMS three dimensional imaging to understand the relationships between grain boundary chemistry, orientation and intergranular degradation. SURF INTERFACE ANAL 2002. [DOI: 10.1002/sia.1187] [Citation(s) in RCA: 4] [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: 11/11/2022]
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Martel F, Keating E, Calhau C, Gründemann D, Schömig E, Azevedo I. Regulation of human extraneuronal monoamine transporter (hEMT) expressed in HEK293 cells by intracellular second messenger systems. Naunyn Schmiedebergs Arch Pharmacol 2001; 364:487-95. [PMID: 11770002 DOI: 10.1007/s002100100476] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Several transmembrane transporters of organic compounds are regulated by phosphorylation/dephosphorylation mechanisms. The aim of this study was to investigate the possible regulation of the human extraneuronal monoamine transporter, hEMT, by these mechanisms. The experiments were performed using HEK293 cells stably transfected with pcDNA3hEMT (293hEMT). The characteristics of hEMT-mediated uptake of [3H]1-methyl-4-phenylpyridinium ([3H]MPP+) were studied by incubating the cells at 37 degrees C for 1 min with 200 nM [3H]MPP+. Uptake of [3H]MPP+ by 293hEMT cells was not affected or only slightly reduced by modulators of protein kinase A, protein kinase C, or protein kinase G. It was not affected by an inhibitor of protein tyrosine kinase and was reduced by mitogen-activated protein kinase inhibitors. Uptake of [3H]MPP+ by 293hEMT cells was independent of extracellular Ca2+ and strongly reduced by Ca2+/calmodulin pathway inhibitors. Uptake of [3H]MPP+ by 293hEMT cells was strongly reduced in the presence of non-selective phosphodiesterase inhibitors (IBMX, caffeine, theophylline). The effect of IBMX was independent of extracellular Ca2+ its IC50 was found to be 82.0 microM (66.2-101.6 microM; n=4), and its inhibitory effect resulted from a significant decrease in the maximal velocity of [3H]MPP+ uptake, with no change in the Michaelis-Menten constant. [3H]MPP+ uptake was reduced by 8-methoxy-methyl-IBMX, a selective inhibitor of the Ca2+/calmodulin-dependent phosphodiesterase (PDE1), but not by zaprinast, a selective inhibitor of PDE5. Uptake of [3H]MPP+ by 293hEMT cells was strongly reduced by protein tyrosine phosphatase inhibitors, by an alkaline phosphatase inhibitor and, by contrast. showed an increase in the presence of exogenous alkaline phosphatase. In conclusion, these results suggest that hEMT is regulated by phosphorylation/dephosphorylation mechanisms, being active in the dephosphorylated state.
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Affiliation(s)
- F Martel
- Department of Biochemistry, Faculty of Medicine, Porto, Portugal.
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Abstract
The aim of this work was to investigate the effect of P-glycoprotein modulators on human extraneuronal monoamine transporter (EMT)-mediated transport. The experiments were performed using a cell line from human embryonic kidney (HEK293 cells) stably transfected with pcDNA3hEMT (293(hEMT)), or with pcDNA3 alone (293(control)). Of the P-glycoprotein modulators tested, rhodamine123, verapamil and daunomycin concentration-dependently inhibited EMT-mediated uptake of [3H]1-methyl-4-phenylpyridinium ([3H]MPP(+)). The corresponding IC(50)'s were found to be 3.6, 37 and 130 microM, respectively. By contrast, vinblastine, digitoxin and cyclosporine A were devoid of effect. The endogenous organic cation tyramine, but not choline, inhibited EMT-mediated transport (IC(50) of 468 microM). Moreover, L-arginine and L-histidine (up to 1 mM) did not affect [3H]MPP(+) uptake. Finally, MPP(+) and tyramine trans-stimulated [3H]MPP(+) uptake, but rhodamine123 had no effect, and verapamil and daunomycin trans-inhibited [3H]MPP(+) uptake. In conclusion, this study shows that several cationic modulators of P-glycoprotein inhibit EMT-mediated transport. As a consequence, the interaction of P-glycoprotein modulators with EMT must be taken into account, and the consequences of this interaction must not be forgotten when using such drugs in vivo.
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Affiliation(s)
- F Martel
- Department of Biochemistry, Faculty of Medicine, 4200-319 Porto, Portugal.
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Abstract
A 26-year-old female with known platelet storage pool disease presented with a short history of recurrent haemoptysis. Initial investigations were unhelpful until the cyclical nature of the symptoms became apparent prompting the unusual diagnosis of pulmonary endometriosis to be made. This was subsequently confirmed on premenstrual CT scanning. The introduction of a specific hormonal therapy and multidisciplinary input was ultimately successful.
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Affiliation(s)
- E Keating
- Department of Haematology, Royal Hallamshire Hospital, Sheffield, UK
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Schlamowitz RA, Gross S, Keating E, Pitt W, Mazur J. Tricuspid valve prolapse: a common occurrence in the click-murmur syndrome. J Clin Ultrasound 1982; 10:435-439. [PMID: 6816829 DOI: 10.1002/jcu.1870100906] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Isolated mitral valve prolapse (MVP) may represent one end of a spectrum of disease involving dysfunction of multiple cardiac valves. Eighty-nine consecutive patients with MVP diagnosed by two-dimensional echocardiography (2-D echo) were prospectively studied specifically to determine the incidence of tricuspid valve prolapse (TVP) and its clinical correlations. Criteria for prolapse of the atrioventricular (A-V) valves by 2-D echo included extension of the valve leaflets behind an imaginary line defining the valve annulus. Forty-one of 82 patients with MVP had associated TVP. No significant differences existed between patients with isolated MVP and combined A-V valve prolapse with regard to sex, clinical history, symptoms, or physical examination. The parasternal long axis view was more sensitive than the apical four chamber view in diagnosing prolapse of either mitral or tricuspid valves. Thus, TVP is a frequent concomitant of MVP and occurs with equal frequency in both young and old patients.
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Keating E, Seidlitz PR. The role of safety in materials management. Hosp Prog 1976; 57:56-9. [PMID: 1270052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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