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Nosrani SE, Tartibian B, Eslami R, Farinha C, Serrano J, Ferreira JP, Texeira AM. The Effects of Combined Aquatic Exercise on Physical Performance and Metabolic Indices in Overweight Healthy Older Adults. Int J Exerc Sci 2024; 16:1499-1513. [PMID: 38288074 PMCID: PMC10824309] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
Addressing overweight and obesity to promote healthy aging is essential. Exercise is an outstanding approach to manage metabolic and physical dysfunction. Aquatic exercise has been recommended for older individuals due to reduced weight pressure on joints. The aim of this study was to determine the effects of twenty-eight weeks of combined aquatic exercise (aerobic and resistance) in overweight healthy older individuals. Thirty-two subjects of both genders with mean age of 72.06 ± 5.8 years were randomly assigned into two groups: an aquatic exercise group (EG; n = 19) and a control group (CG; n = 13). Body composition, anthropometric measurements, blood pressure, lipid profile, fasting glucose, insulin, and leptin were assessed before and after the training program. The lipid profile, fasting glucose, leptin, insulin, and insulin resistance did not change between and within groups. The lipid profile worsened in the CG. Reduction in body fat mass, waist and leg circumferences, along with body mass gain in the aquatic exercise group was observed (p ≤ 0.05). Systolic and diastolic blood pressure significantly improved in the exercise group (P = 0.003, P = 0.001). Significant differences were found in aerobic endurance (P = 0.008) and lower body flexibility (P = 0.049) of the aquatic exercise group compared with the control group. Also, upper body flexibility (P = 0.001, P = 0.020), lower and upper body strength (P = 0.001, P = 0.031), and handgrip (P = 0.001, P = 0.006), showed significant differences within the exercise group. Aquatic exercise may have a positive impact on the overweight aging population's metabolic and cardiovascular parameters, based on the observed improvements in blood pressure and body composition.
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Affiliation(s)
- Shiva Ebrahimpour Nosrani
- Faculty of Physical Education and Sport Sciences, Tehran, IRAN
- Research Center for Sport and Physical Activity (CIDAF), Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, PORTUGAL
| | | | - Rasul Eslami
- Faculty of Physical Education and Sport Sciences, Tehran, IRAN
| | - Carlos Farinha
- Research Center for Sport and Physical Activity (CIDAF), Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, PORTUGAL
| | - Joao Serrano
- Sport, Health & Exercise Research Unit (SHERU), Polytechnic Institute of Castelo Branco, Castelo Branco, PORTUGAL
| | - Jose Pedro Ferreira
- Research Center for Sport and Physical Activity (CIDAF), Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, PORTUGAL
| | - Ana Maria Texeira
- Research Center for Sport and Physical Activity (CIDAF), Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, PORTUGAL
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Silva FM, Duarte-Mendes P, Carvalho E, Soares CM, Farinha C, Serrano J, Paulo R, Massart A, Rodrigues RN, Teixeira AM, Ferreira JP. Effects of combined training during the COVID-19 pandemic on metabolic health and quality of life in sedentary workers: A randomized controlled study. Front Public Health 2022; 10:1040714. [PMID: 36438250 PMCID: PMC9686330 DOI: 10.3389/fpubh.2022.1040714] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 10/20/2022] [Indexed: 11/11/2022] Open
Abstract
This study aimed to analyze the effects of a combined training (CT) program performed during the first national lockdown due to the COVID-19 pandemic on body composition, metabolic profile, quality of life and stress in sedentary workers, and examines whether changes in the metabolic profile are associated with changes in health-related outcomes which are modifiable by exercise. We evaluated 31 sedentary workers (48.26 ± 7.89 years old). Participants were randomly assigned to a CT group (i.e., performed 16 weeks of exercise) or to a non-exercise control group. The CT program consisted of 16-week of resistance and aerobic exercise. Body composition, glycemic and lipidic profiles, cardiorespiratory fitness (CRF), health-related quality of life and stress levels were assessed pre- and post-intervention. After the intervention period, the CT group demonstrated significantly lower waist and hip circumference (p < 0.05) values than the control group. The control group significantly increased the fasting glucose and HOMA-IR after 16 weeks follow-up (+4.74 mg/dL, p = 0.029; and +0.41 units, p = 0.010, respectively), whiles no significant changes were observed in the CT group in the same parameters (+3.33 mg/dL, p = 0.176; and +0.04 units, p = 0.628, respectively). No changes were observed in the lipid profile for either group (p > 0.05). A significant positive relationship was detected between the change in BMI with the changes in insulin and HOMA-IR (r = 0.643, p = 0.024; and r = 0.605, p = 0.037, respectively). In addition, the changes in CRF were negatively associated with the changes in total cholesterol (r = -0.578, p = 0.049). We observed differences between groups on perceived stress levels and physical, psychological, and environmental domains of quality of life, with the CT group showing better results. Moreover, the CT group improved perceived life satisfaction (+3.17 points, p = 0.038). The findings of the present study suggest that the participants who remained physically active during the first pandemic-related lockdown were able to mitigate the deleterious effects associated with a sedentary lifestyle.
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Affiliation(s)
- Fernanda M. Silva
- Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal,Research Unit for Sport and Physical Activity (CIDAF, UID/DTP/04213/2020), University of Coimbra, Coimbra, Portugal,Fernanda M. Silva
| | - Pedro Duarte-Mendes
- Department of Sports and Wellbeing, Polytechnic Institute of Castelo Branco, Castelo Branco, Portugal,Sport, Health & Exercise Research Unit (SHERU), Polytechnic Institute of Castelo Branco, Castelo Branco, Portugal,*Correspondence: Pedro Duarte-Mendes
| | - Eugénia Carvalho
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal,Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
| | - Carlos M. Soares
- Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal,Research Unit for Sport and Physical Activity (CIDAF, UID/DTP/04213/2020), University of Coimbra, Coimbra, Portugal
| | - Carlos Farinha
- Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal
| | - João Serrano
- Department of Sports and Wellbeing, Polytechnic Institute of Castelo Branco, Castelo Branco, Portugal,Sport, Health & Exercise Research Unit (SHERU), Polytechnic Institute of Castelo Branco, Castelo Branco, Portugal
| | - Rui Paulo
- Department of Sports and Wellbeing, Polytechnic Institute of Castelo Branco, Castelo Branco, Portugal,Sport, Health & Exercise Research Unit (SHERU), Polytechnic Institute of Castelo Branco, Castelo Branco, Portugal
| | - Alain Massart
- Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal,Research Unit for Sport and Physical Activity (CIDAF, UID/DTP/04213/2020), University of Coimbra, Coimbra, Portugal
| | - Rafael N. Rodrigues
- Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal
| | - Ana M. Teixeira
- Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal,Research Unit for Sport and Physical Activity (CIDAF, UID/DTP/04213/2020), University of Coimbra, Coimbra, Portugal
| | - José Pedro Ferreira
- Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal,Research Unit for Sport and Physical Activity (CIDAF, UID/DTP/04213/2020), University of Coimbra, Coimbra, Portugal
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Farinha C, Ferreira JP, Serrano J, Santos H, Oliveiros B, Silva FM, Cascante-Rusenhack M, Teixeira AM. The impact of aquatic exercise programs on the systemic hematological and inflammatory markers of community dwelling elderly: A randomized controlled trial. Front Physiol 2022; 13:838580. [PMID: 36246130 PMCID: PMC9554228 DOI: 10.3389/fphys.2022.838580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 09/05/2022] [Indexed: 11/18/2022] Open
Abstract
Evidence shows that physical exercise is important in maintaining an efficient immune system during ageing. However, there are few studies that test the impact of aquatic exercise programs on the immune system. This study aims to analyze the impact of different physical exercise programs in aquatic environment on the systemic hematological and inflammatory markers of community dwelling elderly. One hundred and two elderly were randomly allocated into four groups: a continuous aerobic exercise group (AerG) (n = 25, 71.44 ± 4.84 years); an interval aerobic exercise group (IntG) (n = 28, 72.64 ± 5.22 years); a combined exercise group (ComG) (n = 29, 71.90 ± 5.67 years); a control group (CG) (n = 20, 73.60 ± 5.25 years). The AerG, IntG and ComG participants took part in three different aquatic exercise programs over a 28-weeks period. The CG participants maintained their usual routines during the same time period. Blood samples were collected from all participants in order to access hematologic indicators, by means of cell count, and the inflammatory profile by ELISA. After 28 weeks, significant differences were found for several hematologic variables in the AerG, IntG and ComG with increases in mean corpuscular hemoglobulin (MCH), mean corpuscular hemoglobulin concentration (MCHC), and hemoglobulin (Hb). Decreases in TNF-α levels were found for all exercising groups. An increase in IL-10 levels, granulocytes to lymphocytes ratio (GLR) and a decrease in the TNF-α/IL-10 ratio, were found for the IntG. For the ComG decreases were also found for the TNF-α, IL-1ß/IL-1ra ratios. The present study suggests that aquatic exercise programs were able to improve the inflammatory profile of the participants. Those in the exercise intervention groups showed a shift towards lower pro-inflammatory levels while the non-exercising group showed the opposite behaviour. The IntG and the ComG aquatic exercise programs appeared to be more effective than the AerG program in decreasing chronic low-grade inflammation by mediating the production of higher levels of anti-inflammatory cytokines. However, the differences found between the exercising groups were small and may not have clinical significance.
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Affiliation(s)
- Carlos Farinha
- Research Unit for Sport and Physical Activity, University of Coimbra, Coimbra, Portugal
- Municipality of Sertã, Sertã, Portugal
- *Correspondence: Carlos Farinha,
| | - José Pedro Ferreira
- Research Unit for Sport and Physical Activity, University of Coimbra, Coimbra, Portugal
| | - João Serrano
- Sport, Health and Exercise Research Unit (SHERU), Polytechnic Institute of Castelo Branco, Castelo-Branco, Portugal
| | - Hélder Santos
- Polytechnic of Coimbra, ESTeSC, Clinical Physiology, Coimbra, Portugal
| | - Bárbara Oliveiros
- Coimbra Institute for Clinical and Biomedical Research, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Fernanda M. Silva
- Research Unit for Sport and Physical Activity, University of Coimbra, Coimbra, Portugal
| | | | - Ana Maria Teixeira
- Research Unit for Sport and Physical Activity, University of Coimbra, Coimbra, Portugal
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Ferreira V, Guerreiro J, Correia J, Gonçalves J, Farinha C, Mendes F. 556: Development of molecular imaging tools to monitor drug efficacy through assessment of CFTR localization in vivo. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01979-2] [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: 11/28/2022]
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Ferreira J, Farinha C. 624: Role of cytoskeleton modulators in regulating CFTR membrane stability and rescue. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)02047-6] [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: 11/27/2022]
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Ramalho S, Silva I, Amaral M, Farinha C. 633: Characterization of 4 rare CFTR trafficking mutants and their response to rescue strategies. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)02056-7] [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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Farinha C, Teixeira AM, Serrano J, Santos H, Campos MJ, Oliveiros B, Silva FM, Cascante-Rusenhack M, Luís P, Ferreira JP. Impact of Different Aquatic Exercise Programs on Body Composition, Functional Fitness and Cognitive Function of Non-Institutionalized Elderly Adults: A Randomized Controlled Trial. Int J Environ Res Public Health 2021; 18:ijerph18178963. [PMID: 34501553 PMCID: PMC8430467 DOI: 10.3390/ijerph18178963] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/18/2021] [Accepted: 08/22/2021] [Indexed: 11/16/2022]
Abstract
Aquatic physical exercise programs have become progressively more popular among elderly people. Some of the major physical exercise program disadvantages on land are minimized due to the specific properties of the aquatic environment. The purpose of the present randomized controlled study is to verify the effects of different aquatic physical exercise programs on body composition, functional fitness and cognitive function in non-institutionalized elderly people. For this study, 102 elderly individuals were randomly allocated into four different groups: AerG (n = 25, 71.44 ± 4.84 years); IntG (n = 28, 72.64 ± 5.22 years); ComG (n = 29, 71.90 ± 5.67 years) and CG (n = 20, 73.60 ± 5.25 years). Individuals from the groups AerG, IntG and ComG participated in three different aquatic physical exercise programs for a period of 28 weeks. The CG participants kept to their usual routines. All participants were evaluated for body composition, functional fitness and cognitive function at two time moments, i.e., pre- (M1) and post-intervention (M2). Significant differences for body composition were found between M1 and M2 for FM (p < 0.001), LBM (p < 0.001) and WCir (p < 0.01) in the AerG, for BMI (p < 0.05), FM (p < 0.05), LBM (p < 0.001) and LCir-R (p < 0.05) in the IntG, and for WGT (p < 0.01), FM (p < 0.05), LBM (p < 0.01), LCir-R (p < 0.05) and LCir-L (p < 0.01) in the ComG groups. For functional fitness, differences were found between M1 and M2 for 2m-ST (p < 0.000), 30s-CS (p < 0.000), 30s-AC (p < 0.05), HG-T-R (p < 0.000) and HG-T-L (p < 0.000) in the AerG, for 2m-ST (p < 0.05), BS-R (p < 0.05), 30s-CS (p < 0.000), 30s-AC(p < 0.01), HG-T-R (p < 0.000) and HG-T-L (p < 0.000) in the IntG, and for 30s-CS (p < 0.000), HG-T-R (p < 0.000) and HG-T-L (p < 0.000) in the ComG groups. The present study evidenced the beneficial effects of physical exercise in an aquatic environment on body composition, functional fitness and cognitive function in non-institutionalized elderly adults. The ComG water-based exercise program showed more beneficial effects in the improvement of body composition and cognitive function variables, while the IntG and AerG programs were more effective in the improvement of functional fitness.
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Affiliation(s)
- Carlos Farinha
- University of Coimbra, Research Unit for Sport and Physical Activity, CIDAF, UID/PTD/04213/2019, 3040-248 Coimbra, Portugal; (C.F.); (A.M.T.); (M.J.C.); (F.M.S.)
| | - Ana Maria Teixeira
- University of Coimbra, Research Unit for Sport and Physical Activity, CIDAF, UID/PTD/04213/2019, 3040-248 Coimbra, Portugal; (C.F.); (A.M.T.); (M.J.C.); (F.M.S.)
| | - João Serrano
- Sport, Health & Exercise Research Unit (SHERU), Polytechnic Institute of Castelo Branco, 6000-266 Castelo Branco, Portugal;
| | - Hélder Santos
- Coimbra School of Health Technology—IPC, 3046-854 Coimbra, Portugal;
| | - Maria João Campos
- University of Coimbra, Research Unit for Sport and Physical Activity, CIDAF, UID/PTD/04213/2019, 3040-248 Coimbra, Portugal; (C.F.); (A.M.T.); (M.J.C.); (F.M.S.)
| | - Bárbara Oliveiros
- Faculty of Medicine, University of Coimbra, 3000-370 Coimbra, Portugal;
| | - Fernanda M. Silva
- University of Coimbra, Research Unit for Sport and Physical Activity, CIDAF, UID/PTD/04213/2019, 3040-248 Coimbra, Portugal; (C.F.); (A.M.T.); (M.J.C.); (F.M.S.)
| | - Márcio Cascante-Rusenhack
- School of Physical Education and Sports, University of Costa Rica (UCR), San José 11501-2060, Costa Rica;
| | - Paulo Luís
- Municipality of Sertã, 6100-738 Sertã, Portugal;
| | - José Pedro Ferreira
- University of Coimbra, Research Unit for Sport and Physical Activity, CIDAF, UID/PTD/04213/2019, 3040-248 Coimbra, Portugal; (C.F.); (A.M.T.); (M.J.C.); (F.M.S.)
- Correspondence: ; Tel.: +351-926-294-135
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Farinha C, Tavares O. SPGR with Contrast-Enhanced versus SE contrast-enhanced T1-weighted studies of the head. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz034.054] [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)
- C Farinha
- Madeira Medical Center, Grupo HPA Saúde
| | - O Tavares
- ESTeSC - Coimbra Health School, Instituto Politécnico de Coimbra, Portugal
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Martins C, Ferreira PM, Carvalho R, Costa SC, Farinha C, Azevedo L, Amorim A, Oliveira M. Evaluation of InnoQuant® HY and InnoTyper® 21 kits in the DNA analysis of rootless hair samples. Forensic Sci Int Genet 2019; 39:61-65. [DOI: 10.1016/j.fsigen.2018.12.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 11/28/2018] [Accepted: 12/16/2018] [Indexed: 01/02/2023]
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Martins C, Ferreira PM, Carvalho R, Costa SC, Farinha C, Azevedo L, Amorim A, Oliveira M. Internal validation of two new retrotransposons-based kits (InnoQuant ® HY and InnoTyper ® 21) at a forensic lab. Forensic Sci Int 2018; 283:1-8. [PMID: 29232650 DOI: 10.1016/j.forsciint.2017.11.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 10/30/2017] [Accepted: 11/22/2017] [Indexed: 12/26/2022]
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Florindo C, Damião V, Silvestre I, Farinha C, Rodrigues F, Nogueira F, Martins-Pereira F, Castro R, Borrego MJ, Santos-Sanches I, The Group for the Prevention of Neonatal GBS Infection C. Epidemiological surveillance of colonising group B Streptococcus epidemiology in the Lisbon and Tagus Valley regions, Portugal (2005 to 2012): emergence of a new epidemic type IV/clonal complex 17 clone. Euro Surveill 2014; 19. [DOI: 10.2807/1560-7917.es2014.19.23.20825] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Binary file ES_Abstracts_Final_ECDC.txt matches
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Affiliation(s)
- C Florindo
- Department of Infectious Diseases, National Institute of Health, Lisbon, Portugal
| | - V Damião
- Department of Infectious Diseases, National Institute of Health, Lisbon, Portugal
- CREM, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa , Caparica, Portugal
| | - I Silvestre
- CREM, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa , Caparica, Portugal
- Medical Microbiology Unit, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, Lisbon, Portugal
- Department of Infectious Diseases, National Institute of Health, Lisbon, Portugal
| | - C Farinha
- Medical Microbiology Unit, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, Lisbon, Portugal
- CREM, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa , Caparica, Portugal
| | - F Rodrigues
- CREM, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa , Caparica, Portugal
- Medical Microbiology Unit, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, Lisbon, Portugal
| | - F Nogueira
- Medical Microbiology Unit, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, Lisbon, Portugal
- CREM, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa , Caparica, Portugal
| | - F Martins-Pereira
- CREM, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa , Caparica, Portugal
- Medical Microbiology Unit, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, Lisbon, Portugal
| | - R Castro
- Medical Microbiology Unit, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, Lisbon, Portugal
- CREM, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa , Caparica, Portugal
| | - M J Borrego
- Department of Infectious Diseases, National Institute of Health, Lisbon, Portugal
| | - I Santos-Sanches
- CREM, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa , Caparica, Portugal
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Penque D, Mendes F, Beck S, Farinha C, Pacheco P, Nogueira P, Lavinha J, Malhó R, Amaral MD. Cystic fibrosis F508del patients have apically localized CFTR in a reduced number of airway cells. J Transl Med 2000; 80:857-68. [PMID: 10879737 DOI: 10.1038/labinvest.3780090] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.4] [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: 11/09/2022] Open
Abstract
Present state of knowledge, mostly based on heterologous expression studies, indicates that the cystic fibrosis transmembrane conductance regulator (CFTR) protein bearing the F508del mutation is misprocessed and mislocalized in the cytoplasm, unable to reach the cell surface. Recently, however, it was described that protein levels and localization are similar between F508del and wild-type CFTR in airway and intestinal tissues, but not in the sweat glands. In this study, we used immunocytochemistry with three different anti-CFTR antibodies to investigate endogenous CFTR expression and localization in nasal epithelial cells from F508del homozygous patients, F508del carriers, and non-CF individuals. On average, 300 cells were observed per individual. No significant differences were observed for cell type distributions among CF, carrier, and non-CF samples; epithelial cells made up approximately 80% to 95% of all cells present. CFTR was detected mostly in the apical region (AR) of the tall columnar epithelial (TCE) cells, ciliated or nonciliated. By confocal microscopy analysis, we show that the CFTR apical region-staining does not overlap with either anti-calnexin (endoplasmic reticulum), anti-p58 (Golgi), or anti-tubulin (cilia) stainings. The median from results with three antibodies indicate that the apical localization of CFTR happens in 22% of TCE cells from F508del homozygous patients with CF (n = 12), in 42% of cells from F508del carriers (n = 20), and in 56% of cells from healthy individuals (n = 12). Statistical analysis indicates that differences are significant among all groups studied and for the three antibodies (p < 0.05). These results confirm the presence of CFTR in the apical region of airway cells from F508del homozygous patients; however, they also reveal that the number of cells in which this occurs is significantly lower than in F508del carriers and much lower than in healthy individuals. These findings may have an impact on the design of novel pharmacological strategies aimed at circumventing the CF defect caused by the F508del mutation.
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Affiliation(s)
- D Penque
- Centro de Genética Humana, Instituto Nacional Saúde Dr. Ricardo Jorge, Lisboa, Portugal.
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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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Beck S, Penque D, Garcia S, Gomes A, Farinha C, Mata L, Gulbenkian S, Gil-Ferreira K, Duarte Â, 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. [DOI: 10.1002/(sici)1098-1004(1999)14:2<133::aid-humu5>3.3.co;2-k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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