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Telomere length dynamics measured by flow-FISH in patients with obesity undergoing bariatric surgery. Sci Rep 2023; 13:304. [PMID: 36609582 PMCID: PMC9818052 DOI: 10.1038/s41598-022-27196-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 12/28/2022] [Indexed: 01/09/2023] Open
Abstract
Obesity has negative effects on comorbidities, health-related quality of life and survival. Telomere length (TL) changes after bariatric surgery have been reported, but the studies are contradictory, and analyses using state-of-the art techniques for TL measurement, such as flow-FISH, are sparse. We measured TL dynamics via flow-FISH in patients undergoing bariatric surgery and compared their TL with 105 healthy individuals. Patients with obesity who underwent bariatric surgery were included. Lymphocyte and granulocyte absolute and age-adjusted (aa) TL were analyzed by flow-FISH before (preoperative cohort, n = 45) and after surgery (follow-up cohort, n = 35) at month 5.5 ± 3.9 (mean ± standard deviation [SD]). The initial lymphocyte aaTL was significantly shorter (-0.37 kb ± 0.18 kb, P = 0.045) in patients with obesity, while the granulocyte aaTL was not different from that in the healthy comparison population (0.28 kb ± 0.17 kb, P = 0.11). The telomere dynamics after surgery showed an increase in mean TL in both lymphocytes and granulocytes of patients with a pronounced BMI loss of ≥ 10 kg/m2. We did not find any association between TL increase after surgery and age, sex or the type of procedure selected for bariatric surgery. We confirmed that patients suffering from obesity have significantly shorter lymphocyte TL using flow-FISH. Along with and dependent on the degree of weight reduction after bariatric surgery, TL significantly increased in both lymphocytes and granulocytes after a mean of 5.5 months. Our results show that bariatric surgery affects not only body weight but also biomarkers of aging, such as TL.
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Peña E, León-Mengíbar J, Powell TR, Caixàs A, Cardoner N, Rosa A. Telomere length in patients with obesity submitted to bariatric surgery: A systematic review. EUROPEAN EATING DISORDERS REVIEW 2021; 29:842-853. [PMID: 34545641 DOI: 10.1002/erv.2865] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 09/02/2021] [Accepted: 09/03/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND Patients with obesity show evidence of increased levels of inflammation, oxidative stress and premature ageing. Telomere length (TL) is a key marker of cellular ageing, and patients with obesity often present shorter TL. Bariatric surgery (BS) is currently the most effective treatment for severe obesity. The aim of this systematic review was to explore whether the beneficial health effects observed after surgery in obese patients correspond to a restoration in TL or slower rates of shortening. As a secondary aim, we evaluated, at baseline and post-surgery, the relationship between TL and different factors that could play a role in TL changes along time. METHODS Searches for relevant articles were performed in MEDLINE, Web of Knowledge and SCOPUS. Prospective longitudinal studies that evaluated leukocyte TL in adult patients who had undergone BS were included. Data were extracted and evaluated by two independent researchers. The protocol was registered in PROSPERO with the number CRD42020197711. RESULTS Seven studies based on independent samples that fulfilled our inclusion criteria were included. Obese patients showed shorter telomeres compared to healthy individuals. Long-term studies (>2 years) seem to suggest an improvement in TL after surgery presumably due to the improvement of the inflammatory and oxidative levels of the patients induced by weight loss. CONCLUSION Studies seem to point towards a beneficial long-term effect of BS on TL recovery. However, the scarce number of studies and the heterogeneity in the variables analysed in the different cohorts make it difficult to draw a firm conclusion. More studies are needed to evaluate long-term changes to TL following BS.
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Affiliation(s)
- Eleonora Peña
- Secció de Zoologia i Antropologia Biològica, Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, Spain.,Institut de Biomedicina, Universitat de Barcelona (UB), Barcelona, Spain
| | - Josep León-Mengíbar
- Institut d'Investigació i Innovació Parc Taulí (I3PT), Corporacio Sanitària Parc taulí, Sabadell, Spain.,Endocrinology and Nutrition Department, Hospital Universitari Parc Tauli, Sabadell, Spain.,Medicine Department, Universitat Autònoma de Barcelona (UAB), Sabadell, Spain
| | - Timothy R Powell
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.,Division of Infectious Diseases, Weill Cornell Medicine, Cornell University, New York, New York, USA
| | - Assumpta Caixàs
- Institut d'Investigació i Innovació Parc Taulí (I3PT), Corporacio Sanitària Parc taulí, Sabadell, Spain.,Endocrinology and Nutrition Department, Hospital Universitari Parc Tauli, Sabadell, Spain
| | - Narcís Cardoner
- Institut d'Investigació i Innovació Parc Taulí (I3PT), Corporacio Sanitària Parc taulí, Sabadell, Spain.,Mental Health Department, Corporació Sanitària Parc Taulí Sabadell, Barcelona, Spain.,Depression and Anxiety Program, Department of Mental Health, Parc Tauli Sabadell, Hospital Universitari, Barcelona, Spain.,Department of Psychiatry and Legal Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain.,Centre for Biomedical Network on Mental Health (CIBERSAM), Instituto Salud Carlos III, Barcelona, Spain
| | - Araceli Rosa
- Secció de Zoologia i Antropologia Biològica, Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, Spain.,Institut de Biomedicina, Universitat de Barcelona (UB), Barcelona, Spain.,Centre for Biomedical Network on Mental Health (CIBERSAM), Instituto Salud Carlos III, Barcelona, Spain
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