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Teng L, Dedousis N, Adeshirlarijaney A, Kanshana JS, Liu M, Hodges CA, Kohan AB. Impaired intestinal free fatty acid transport followed by chylomicron malformation, not pancreatic insufficiency, cause metabolic defects in cystic fibrosis. J Lipid Res 2024; 65:100551. [PMID: 39002195 PMCID: PMC11301217 DOI: 10.1016/j.jlr.2024.100551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 04/03/2024] [Accepted: 04/29/2024] [Indexed: 07/15/2024] Open
Abstract
Intestinal disease is one of the earliest manifestations of cystic fibrosis (CF) in children and is closely tied to deficits in growth and nutrition, both of which are directly linked to future mortality. Patients are treated aggressively with pancreatic enzyme replacement therapy and a high-fat diet to circumvent fat malabsorption, but this does not reverse growth and nutritional defects. We hypothesized that defects in chylomicron production could explain why CF body weights and nutrition are so resistant to clinical treatments. We used gold standard intestinal lipid absorption and metabolism approaches, including mouse mesenteric lymph cannulation, in vivo chylomicron secretion kinetics, transmission electron microscopy, small intestinal organoids, and chylomicron metabolism assays to test this hypothesis. In mice expressing the G542X mutation in cystic fibrosis transmembrane conductance regulator (CFTR-/- mice), we find that defective FFA trafficking across the epithelium into enterocytes drives a chylomicron formation defect. Furthermore, G542X mice secrete small, triglyceride-poor chylomicrons into the lymph and blood. These defective chylomicrons are cleared into extraintestinal tissues at ∼10-fold faster than WT chylomicrons. This defect in FFA absorption resulting in dysfunctional chylomicrons cannot be explained by steatorrhea or pancreatic insufficiency and is maintained in primary small intestinal organoids treated with micellar lipids. These studies suggest that the ultrahigh-fat diet that most people with CF are counselled to follow may instead make steatorrhea and malabsorption defects worse by overloading the absorptive capacity of the CF small intestine.
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Affiliation(s)
- Lihong Teng
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA; Department of Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Nikolaos Dedousis
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA; Department of Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Aneseh Adeshirlarijaney
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA; Department of Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jitendra S Kanshana
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA; Department of Immunology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Min Liu
- Department of Pathology and Laboratory Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Craig A Hodges
- Department of Genetics and Genome Sciences and Department of Pediatrics, Case Western Reserve University, Cleveland, OH, USA
| | - Alison B Kohan
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA; Department of Immunology, University of Pittsburgh, Pittsburgh, PA, USA.
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Fabricius D, Knieling T, Zurmuehl N, Makedon L, Freihorst J, Schmidt H, Bode S. Changes in vitamins and trace elements after initiation of highly effective CFTR modulator therapy in children and adults with cystic fibrosis - a real-life insight. Mol Cell Pediatr 2024; 11:4. [PMID: 38717689 PMCID: PMC11078909 DOI: 10.1186/s40348-024-00178-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 05/01/2024] [Indexed: 05/12/2024] Open
Abstract
BACKGROUND Highly-effective CFTR-modulator therapy with elexa-/teza-/ivacaftor (ETI) has led to improvements in pulmonary outcomes, sweat chloride, body mass index (BMI) and quality of life in people with cystic fibrosis (CF). Improved uptake of fat-soluble vitamins and micronutrients has been reported for CFTR-modulators but data regarding ETI therapy is lacking. METHODS This single-center retrospective study evaluated forced expiratory volume in one second (FEV-1), sweat chloride, BMI, transaminases (AST, ALT), bilirubin, vitamins A, D, E, zinc and selenium in children and adults eligible for ETI. Parameters were assessed before and up to one year after initiation of ETI. RESULTS 58 patients (median age m = 28 years, SD ± 11.6 years, 51.7% female14 < 18 years old) were included. FEV-1 and sweat chloride improved significantly after ETI. There were no changes in BMI or AST. ALT was increased significantly after 4 weeks of ETI but returned to normal levels in further course. Bilirubin levels remained elevated after ETI. Vitamin A was significantly higher 12 months after ETI. No changes were found for vitamins D, E, zinc and selenium. CONCLUSIONS This study adds to the evidence that improvements of some fat-soluble vitamin levels can be found after ETI. No changes regarding micronutrients were noted. Individualized follow-up and supplementation are recommended.
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Affiliation(s)
- Dorit Fabricius
- Department of Pediatrics and Adolescent Medicine, Ulm University Medical Center, Ulm University, Eythstrasse 24, 89075, Ulm, Germany
| | - Tina Knieling
- Department of Pediatrics and Adolescent Medicine, Ulm University Medical Center, Ulm University, Eythstrasse 24, 89075, Ulm, Germany
| | - Noelle Zurmuehl
- Department of Pediatrics and Adolescent Medicine, Ulm University Medical Center, Ulm University, Eythstrasse 24, 89075, Ulm, Germany
| | - Leandra Makedon
- Department of Pediatrics and Adolescent Medicine, Ulm University Medical Center, Ulm University, Eythstrasse 24, 89075, Ulm, Germany
| | - Joachim Freihorst
- Department of Pediatrics and Adolescent Medicine, Ulm University Medical Center, Ulm University, Eythstrasse 24, 89075, Ulm, Germany
| | - Hanna Schmidt
- Department of Pediatrics and Adolescent Medicine, Ulm University Medical Center, Ulm University, Eythstrasse 24, 89075, Ulm, Germany
| | - Sebastian Bode
- Department of Pediatrics and Adolescent Medicine, Ulm University Medical Center, Ulm University, Eythstrasse 24, 89075, Ulm, Germany.
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Sellers ZM, Assis DN, Paranjape SM, Sathe M, Bodewes F, Bowen M, Cipolli M, Debray D, Green N, Hughan KS, Hunt WR, Leey J, Ling SC, Morelli G, Peckham D, Pettit RS, Philbrick A, Stoll J, Vavrina K, Allen S, Goodwin T, Hempstead SE, Narkewicz MR. Cystic fibrosis screening, evaluation, and management of hepatobiliary disease consensus recommendations. Hepatology 2024; 79:1220-1238. [PMID: 37934656 PMCID: PMC11020118 DOI: 10.1097/hep.0000000000000646] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 10/11/2023] [Indexed: 11/09/2023]
Abstract
Cystic fibrosis (CF) may cause a spectrum of hepatobiliary complications, including portal hypertension, multilobular cirrhosis, and liver failure. Current guidelines on the detection and monitoring of hepatobiliary complications in CF were published in 1999. The CF Foundation assembled a committee to evaluate research advances and formulate revised guidelines for CF-associated liver disease. A committee of hepatologists, gastroenterologists, pulmonologists, pharmacists, nurses, dietitians, individuals with CF, and the parents of a child with CF devised "population, intervention, comparison, and outcome" questions regarding hepatobiliary disease in CF. PubMed literature searches were performed for each population, intervention, comparison, and outcome question. Recommendations were voted on with 80% agreement required to approve a recommendation. Public comment on initial recommendations was solicited prior to the formulation of final recommendations. Thirty-one population, intervention, comparison, and outcome questions were assembled, 6401 manuscripts were title screened for relevance, with 1053 manuscripts undergoing detailed full-text review. Seven recommendations were approved for screening, 13 for monitoring of existing disease, and 14 for treatment of CF-associated hepatobiliary involvement or advanced liver disease. One recommendation on liver biopsy did not meet the 80% threshold. One recommendation on screening ultrasound was revised and re-voted on. Through a multidisciplinary committee and public engagement, we have assembled updated recommendations and guidance on screening, monitoring, and treatment of CF-associated hepatobiliary involvement and advanced liver disease. While research gaps remain, we anticipate that these recommendations will lead to improvements in CF outcomes through earlier detection and increased evidence-based approaches to monitoring and treatment.
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Affiliation(s)
- Zachary M. Sellers
- Department of Pediatrics, Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Stanford University, Palo Alto, California, USA
| | - David N. Assis
- Department of Medicine, Section of Digestive Diseases, Yale School of Medicine, New Haven, Connecticut, USA
| | - Shruti M. Paranjape
- Division of Pediatric Pulmonology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Meghana Sathe
- Department of Pediatrics, Division of Pediatric Gastroenterology and Nutrition, UT Southwestern, Dallas, Texas, USA
| | - Frank Bodewes
- Department of Pediatric Gastroenterology, University Medical Center Groningen, Groningen, The Netherlands
| | - Melissa Bowen
- Department of Advanced Lung Disease and Lung Transplant, Inova Fairfax Hospital, Falls Church, Virginia, USA
| | - Marco Cipolli
- Cystic Fibrosis Center, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Dominique Debray
- Pediatric Hepatology Unit, AP-HP, HôpitalNecker-Enfants malades, Paris, France
| | - Nicole Green
- Department of Pediatrics, Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Seattle Children’s Hospital and University of Washington, Seattle, Washington State, USA
| | - Kara S. Hughan
- Department of Pediatrics, Division of Pediatric Endocrinology and Metabolism, UPMC Children’s Hospital of Pittsburgh and University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - William R. Hunt
- Department of Medicine, Division of Pulmonary, Allergy, Critical Care and Sleep, Emory University, Atlanta, Georgia, USA
| | - Julio Leey
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Florida, Gainesville, Florida, USA
| | - Simon C. Ling
- Department of Paediatrics, Division of Gastroenterology, Hepatology & Nutrition, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Giuseppe Morelli
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Florida, Gainesville, Florida, USA
| | - Daniel Peckham
- Leeds Institute of Medical Research at St. James’s, University of Leeds, Leeds, UK
| | - Rebeca S. Pettit
- Riley Hospital for Children at IU Health, Indianapolis, Indiana, USA
| | - Alexander Philbrick
- Department of Specialty Pharmacy, Northwestern Medicine, Chicago, Illinois, USA
| | - Janis Stoll
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Washington University School of Medicine, St Louis, Missouri, USA
| | - Kay Vavrina
- University of Texas, Health Science Center, San Antonio, Texas, USA
| | - Stacy Allen
- CF Parent Community Advisor to Cystic Fibrosis Foundation, USA
| | - Tara Goodwin
- CF Parent Community Advisor to Cystic Fibrosis Foundation, USA
| | | | - Michael R. Narkewicz
- Department of Pediatrics, Section of Pediatric Gastroenterology, Hepatology, and Nutrition, Digestive Health Institute, Children’s Hospital Colorado, University of Colorado School of, Aurora, Colorado, USA
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Patel T, McBennett K, Sankararaman S, Schindler T, Sundaram K, Minich NM, Malay S, Kutney K. Impact of elexacaftor/tezacaftor/ivacaftor on lipid and fat-soluble vitamin levels and association with body mass index. Pediatr Pulmonol 2024; 59:734-742. [PMID: 38179878 DOI: 10.1002/ppul.26823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 11/04/2023] [Accepted: 12/04/2023] [Indexed: 01/06/2024]
Abstract
INTRODUCTION Cystic fibrosis transmembrane conductance regulator (CFTR) modulators improve gastrointestinal absorption of nutrients and may result in changes in body mass index (BMI), serum lipids, and fat-soluble vitamin levels. We hypothesized that serum lipids and vitamin levels would increase with CFTR modulator therapy and that greater increase in lipids and vitamin levels would be related to greater increase in BMI. METHODS A retrospective study was performed to evaluate the impact of elexacaftor/tezacaftor/ivacaftor (ETI) on nutritional parameters, serum lipids, and fat-soluble vitamin levels. Pre-ETI values (<2 years prior) and post-ETI values (>1 month after) were compared. Linear regression was used to evaluate whether change in BMI is associated with the change in lipid and/or vitamin levels and whether modulator duration is associated with the degree of rise in lipid and/or vitamin levels. RESULTS Adults and adolescents with CF (n = 137) were evaluated before and 31-300 days after starting ETI. Median BMI (adults 21.9 vs. 23.5 kg/m2 ; adolescents 48 vs. 63 percentile) increased after initiation of ETI. Total cholesterol (126 vs. 154 mg/dL), low-density lipoprotein cholesterol (63 vs. 78 mg/dL), non-high-density lipoprotein cholesterol (84 vs. 102 mg/dL), and high density lipoprotein cholesterol (43 vs. 49 mg/dL) increased after ETI, while triglycerides and very low density lipoprotein did not change. Median values for vitamin D (34.5 vs. 38.0 ng/mL) and vitamin A (40.1 vs. 47.9 µg/dL) increased, while vitamin E did not change significantly. There was no significant correlation between BMI change or duration of modulator therapy with vitamin levels or lipid changes. CONCLUSION After initiation of ETI therapy, serum lipids increased in our population, but most values remained within the normal range. Vitamins A and D levels increased post-ETI and no changes were noted in vitamin E. No significant correlation between the degree of BMI change and the magnitude of increase in lipids or vitamin levels was found.
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Affiliation(s)
- Tanvi Patel
- Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Loyola University School of Medicine, Maywood, Illinois, USA
| | - Kimberly McBennett
- Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Senthilkumar Sankararaman
- Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Teresa Schindler
- Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Krithika Sundaram
- University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Nori Mercuri Minich
- Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Sindhoosha Malay
- University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Katherine Kutney
- Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
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Acri G, Testagrossa B, Lucanto MC, Cristadoro S, Pellegrino S, Ruello E, Costa S. Raman Spectroscopy and Cystic Fibrosis Disease: An Alternative Potential Tool for Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Modulator Response Differentiation-A Pilot Study Based on Serum Samples. Molecules 2024; 29:433. [PMID: 38257346 PMCID: PMC10818724 DOI: 10.3390/molecules29020433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/06/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Cystic fibrosis (CF) is a genetic disorder that alters chloride transport in mucous membranes. Recent studies have demonstrated that treatment with modulators of the chloride channel reduces inflammatory markers, restoring, among others, the imbalance of lipids. In this study, we analyzed the serum samples of treated and non-treated patients with modulators with Raman spectroscopy. Nineteen (eight treated an eleven non-treated) patients were considered. The main difference between the two groups appeared in the 3020-2800 cm-1 range. A Voigt deconvolution fit was performed, and nine sub-bands were identified. To distinguish between treated and non-treated patients, the area ratio between the CH3 and CH2 vibration modes was calculated for each patient. The results were validated using statistical analyses. In particular, receiver operating characteristic (ROC) curves and Youden index (Y) were calculated (Area Under Curve (AUC): 0.977; Y: 3.30). An ROC curve represents the performance of the classification, illustrating the diagnostic ability of Raman spectroscopy. It was demonstrated that Raman spectroscopy is able to highlight peculiar differences between elexacaftor/tezacaftor/ivacaftor (ETI)-treated and non-treated patients, in relation with lipids biomarkers.
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Affiliation(s)
- Giuseppe Acri
- Dipartimento di Scienze Biomediche, Odontoiatriche, e delle Immagini Morfologiche e Funzionali, Università degli Studi di Messina, 98125 Messina, Italy; (G.A.); (E.R.)
| | - Barbara Testagrossa
- Dipartimento di Scienze Biomediche, Odontoiatriche, e delle Immagini Morfologiche e Funzionali, Università degli Studi di Messina, 98125 Messina, Italy; (G.A.); (E.R.)
| | - Maria Cristina Lucanto
- Unità Operativa Semplice Dipartimentale Gastroenterologia Pediatrica e Fibrosi Cistica, Azienda, Ospedaliera Universitaria Policlinico G. Martino, Via Consolare Valeria, 98125 Messina, Italy; (M.C.L.); (S.C.); (S.P.); (S.C.)
| | - Simona Cristadoro
- Unità Operativa Semplice Dipartimentale Gastroenterologia Pediatrica e Fibrosi Cistica, Azienda, Ospedaliera Universitaria Policlinico G. Martino, Via Consolare Valeria, 98125 Messina, Italy; (M.C.L.); (S.C.); (S.P.); (S.C.)
| | - Salvatore Pellegrino
- Unità Operativa Semplice Dipartimentale Gastroenterologia Pediatrica e Fibrosi Cistica, Azienda, Ospedaliera Universitaria Policlinico G. Martino, Via Consolare Valeria, 98125 Messina, Italy; (M.C.L.); (S.C.); (S.P.); (S.C.)
| | - Elisa Ruello
- Dipartimento di Scienze Biomediche, Odontoiatriche, e delle Immagini Morfologiche e Funzionali, Università degli Studi di Messina, 98125 Messina, Italy; (G.A.); (E.R.)
| | - Stefano Costa
- Unità Operativa Semplice Dipartimentale Gastroenterologia Pediatrica e Fibrosi Cistica, Azienda, Ospedaliera Universitaria Policlinico G. Martino, Via Consolare Valeria, 98125 Messina, Italy; (M.C.L.); (S.C.); (S.P.); (S.C.)
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Castaldo A, Gelzo M, Iacotucci P, Longobardi A, Taccetti G, Terlizzi V, Carnovale V. One year of treatment with elexacaftor/tezacaftor/ivacaftor in patients with cystic fibrosis homozygous for the F508del mutation causes a significant increase in liver biochemical indexes. Front Mol Biosci 2024; 10:1327958. [PMID: 38259684 PMCID: PMC10800484 DOI: 10.3389/fmolb.2023.1327958] [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: 10/25/2023] [Accepted: 12/01/2023] [Indexed: 01/24/2024] Open
Abstract
Introduction: Modulators of cystic fibrosis transmembrane conductance regulator mutated protein significantly improved the outcome of patients with cystic fibrosis (CF). We describe 63 patients who were independently followed up in two CF regional centers (i.e., Campania and Tuscany regions). Methods: All patients were homozygous for the F508del mutation and were treated with lumacaftor/ivacaftor (LI) for 3 years, followed by 1 year of treatment with elexacaftor/tezacaftor/ivacaftor (ETI). We studied the biochemical parameters of liver damage and cholesterol metabolism. Results: Beyond the improvement of BMI and lung function with LI treatment and even more with ETI, we found that the 3 years of LI treatment significantly improved liver function parameters (total and conjugated bilirubin, ALT, AP, and GGT), while the subsequent ETI treatment caused a significant increase of such parameters. Discussion: We confirm that treatment with LI does not correct hypocholesterolemia, whereas treatment with ETI significantly increases serum cholesterol. Such an increase is likely due to enhanced de novo biosynthesis, as indicated by the significant increase in serum lathosterol, and it is likely that the subsequent liver cholesterol accumulation may contribute to triggering inflammation and worsening liver biochemical indexes. The increase in serum bilirubin and ALT that we observed in approximately 94% and 84% of patients treated with ETI, respectively, suggests further investigation of the impact of ETI therapy on liver function indexes.
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Affiliation(s)
- Alice Castaldo
- Dipartimento di Scienze Mediche Traslazionali, Centro Regionale Fibrosi Cistica del Bambino - Pediatria, Università di Napoli Federico II, Naples, Italy
- Ospedale Pediatrico Meyer IRCCS, Dipartimento di Scienze della Salute, Florence, Italy
- CEINGE-Biotecnologie Avanzate Franco Salvatore, Naples, Italy
| | - Monica Gelzo
- CEINGE-Biotecnologie Avanzate Franco Salvatore, Naples, Italy
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università di Napoli Federico II, Naples, Italy
| | - Paola Iacotucci
- Dipartimento di Medicina Clinica e Chirurgia, Università di Napoli Federico II, Naples, Italy
| | | | - Giovanni Taccetti
- Meyer Children’s Hospital IRCCS, Centro Regionale Toscano per la cura della Fibrosi Cistica, Dipartimento di Pediatria, Firenze, Italy
| | - Vito Terlizzi
- Meyer Children’s Hospital IRCCS, Centro Regionale Toscano per la cura della Fibrosi Cistica, Dipartimento di Pediatria, Firenze, Italy
| | - Vincenzo Carnovale
- Dipartimento di Scienze Mediche Traslazionali, Centro Regionale Fibrosi Cistica dell’Adulto – Geriatria, Università di Napoli Federico II, Naples, Italy
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Lieu N, Prentice BJ, Field P, Fitzgerald DA. Trials and tribulations of highly effective modulator therapies in cystic fibrosis. Paediatr Respir Rev 2023; 48:10-19. [PMID: 37914566 DOI: 10.1016/j.prrv.2023.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 09/13/2023] [Indexed: 11/03/2023]
Abstract
Highly effective modulator therapies (HEMTs) have revolutionised the management approach of most patients living with cystic fibrosis (CF) who have access to these therapies. Clinical trials have reported significant improvements across multiorgan systems, with patients surviving longer. However, there are accumulating case reports and observational data describing various adverse events following initiation of HEMTs including drug-to-drug interactions, drug induced liver injury, Stevens-Johnson syndrome, and neurocognitive symptoms including psychosis and depression, which have required discontinuation of therapy. Current clinical trials are assessing efficacy in younger patients with CF, yet long-term studies are also required to better understand the safety profile in the real-world setting across all ages and the impact of HEMT dose alteration or discontinuation.
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Affiliation(s)
- Nathan Lieu
- Department of Respiratory Medicine, The Children's Hospital at Westmead, Sydney, New South Wales, Australia, 2145; Discipline of Paediatrics and Child Health, University of Sydney, Sydney, New South Wales, Australia.
| | - Bernadette J Prentice
- Department of Respiratory Medicine, Sydney Children's Hospital, Randwick, Sydney, New South Wales, Australia, 2031; Discipline of Paediatrics and Child Health, UNSW, Sydney, New South Wales, Australia
| | - Penelope Field
- Department of Respiratory Medicine, The Children's Hospital at Westmead, Sydney, New South Wales, Australia, 2145; Department of Respiratory Medicine, Sydney Children's Hospital, Randwick, Sydney, New South Wales, Australia, 2031; Discipline of Paediatrics and Child Health, UNSW, Sydney, New South Wales, Australia
| | - Dominic A Fitzgerald
- Department of Respiratory Medicine, The Children's Hospital at Westmead, Sydney, New South Wales, Australia, 2145; Discipline of Paediatrics and Child Health, University of Sydney, Sydney, New South Wales, Australia
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8
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Hergenroeder GE, Faino A, Bridges G, Bartlett LE, Cogen JD, Green N, McNamara S, Nichols DP, Ramos KJ. The impact of elexacaftor/tezacaftor/ivacaftor on fat-soluble vitamin levels in people with cystic fibrosis. J Cyst Fibros 2023; 22:1048-1053. [PMID: 37563007 PMCID: PMC10843772 DOI: 10.1016/j.jcf.2023.08.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/04/2023] [Accepted: 08/05/2023] [Indexed: 08/12/2023]
Abstract
BACKGROUND While elexacaftor/tezacaftor/ivacaftor (ETI) has improved the pulmonary health of many people with cystic fibrosis (PwCF), less is known about ETI effectiveness for extra-pulmonary manifestations, including fat-soluble vitamin malabsorption. This study aims to evaluate ETI's impact on vitamin A, D, E, and international normalized ratio (INR, an indirect marker for Vitamin K) serum levels. METHODS Retrospective cohort study of PwCF ≥12 years receiving ETI. Vitamin levels up to four years preceding and up to two years following ETI initiation were collected. Pairwise comparisons of vitamin levels pre/post-ETI initiation were made using Wilcoxon signed rank and McNemar's tests. Linear mixed effect models were used to regress vitamin levels on time since starting ETI, ETI use (yes/no), the interaction between time and ETI use, and age. RESULTS Two hundred and sixty-four participants met study inclusion, and 169 (64%) had post-ETI initiation vitamin levels. Median vitamin A levels increased from 422.0 to 471.0 mcg/L (p < 0.001), median vitamin D levels increased from 28.5 to 30.8 ng/mL (p = 0.003), and there were no significant changes in median vitamin E or INR. Vitamin A levels rose at a rate of 40.7 mcg/L/year (CI 11.3, 70.2) after ETI start. CONCLUSIONS ETI initiation is associated with increased median vitamin A and vitamin D levels, but no change in median vitamin E or INR levels. Ongoing monitoring of vitamin levels after ETI initiation is needed to screen for potential deficiencies and toxicities, particularly in light of case reports of hypervitaminosis A following ETI initiation.
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Affiliation(s)
- Georgene E Hergenroeder
- Division of Pulmonary and Sleep Medicine, Seattle Children's Hospital; Department of Pediatrics, University of Washington.
| | - Anna Faino
- Core for Biostatistics, Epidemiology, and Analytics in Research, Seattle Children's Research Institute
| | - Gracia Bridges
- Division of Pulmonary and Sleep Medicine, Seattle Children's Hospital
| | - Lauren E Bartlett
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington
| | - Jonathan D Cogen
- Division of Pulmonary and Sleep Medicine, Seattle Children's Hospital; Department of Pediatrics, University of Washington
| | - Nicole Green
- Department of Pediatrics, University of Washington; Division of Gastroenterology and Hepatology, Seattle Children's Hospital
| | - Sharon McNamara
- Division of Pulmonary and Sleep Medicine, Seattle Children's Hospital
| | | | - Kathleen J Ramos
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington
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9
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Gaschignard M, Beaufils F, Lussac-Sorton F, Gallet P, Clouzeau H, Menard J, Costanzo A, Nouard L, Delhaes L, Tetard C, Lamireau T, Fayon M, Bui S, Enaud R. Nutritional impact of CFTR modulators in children with cystic fibrosis. Front Pediatr 2023; 11:1130790. [PMID: 37063653 PMCID: PMC10091219 DOI: 10.3389/fped.2023.1130790] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 03/06/2023] [Indexed: 04/18/2023] Open
Abstract
Background Nutritional status is a major prognostic factor for breathing and the survival of patients with cystic fibrosis (CF). Since 2012, the development of CFTR modulators has considerably transformed the outcome of this disease. Indeed, both lung function and body mass index are improved by CFTR modulators, such as Lumacaftor/Ivacaftor. However, few data exist regarding the outcome of nutritional intakes under Lumacaftor/Ivacaftor. Methods We conducted a prospective single-center study in children with CF treated with Lumacaftor/Ivacaftor to evaluate their nutritional intake before and after treatment. Results Thirty-four children were included in this study, with a median age of 12.4 years [11.9; 14.7]. There was no significant improvement in weight, height or BMI. Patients' total energy intake was not significantly changed with Lumacaftor/Ivacaftor, while carbohydrate intakes decreased significantly. We found that blood levels of vitamin E and Selenium were significantly increased under Lumacaftor/Ivacaftor, without a significant increase in supplementation. In patients with a BMI Z-score < 0 at treatment initiation, there was a significant improvement in weight and BMI Z-score, while TEI and carbohydrate intakes were significantly lower. Conclusion We showed that treatment with Lumacaftor/Ivacaftor improved the nutritional status of patients without necessarily being associated with an increase in nutritional intake. Although these data need to be confirmed in larger cohorts, they support the hypothesis that weight gain under modulators is multifactorial, and may be related to a decrease in energy expenditure or an improvement in absorption.
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Affiliation(s)
- Margaux Gaschignard
- Bordeaux University Hospital, Hôpital Pellegrin-Enfants, Paediatric Cystic Fibrosis Reference Center (CRCM), Centre d'Investigation Clinique (CIC 1401), Bordeaux, France
| | - Fabien Beaufils
- Bordeaux University Hospital, Hôpital Pellegrin-Enfants, Paediatric Cystic Fibrosis Reference Center (CRCM), Centre d'Investigation Clinique (CIC 1401), Bordeaux, France
- Centre de Recherche Cardio-Thoracique de Bordeaux, INSERM U1045, Bordeaux University, Bordeaux, France
| | - Florian Lussac-Sorton
- Centre de Recherche Cardio-Thoracique de Bordeaux, INSERM U1045, Bordeaux University, Bordeaux, France
| | - Pauline Gallet
- Bordeaux University Hospital, Hôpital Pellegrin-Enfants, Paediatric Cystic Fibrosis Reference Center (CRCM), Centre d'Investigation Clinique (CIC 1401), Bordeaux, France
| | - Haude Clouzeau
- Bordeaux University Hospital, Hôpital Pellegrin-Enfants, Paediatric Cystic Fibrosis Reference Center (CRCM), Centre d'Investigation Clinique (CIC 1401), Bordeaux, France
| | - Joris Menard
- Bordeaux University Hospital, Hôpital Pellegrin-Enfants, Paediatric Cystic Fibrosis Reference Center (CRCM), Centre d'Investigation Clinique (CIC 1401), Bordeaux, France
| | - Aurélie Costanzo
- Bordeaux University Hospital, Hôpital Pellegrin-Enfants, Paediatric Cystic Fibrosis Reference Center (CRCM), Centre d'Investigation Clinique (CIC 1401), Bordeaux, France
| | - Lucie Nouard
- Bordeaux University Hospital, Hôpital Pellegrin-Enfants, Paediatric Cystic Fibrosis Reference Center (CRCM), Centre d'Investigation Clinique (CIC 1401), Bordeaux, France
| | - Laurence Delhaes
- Bordeaux University Hospital, Hôpital Pellegrin-Enfants, Paediatric Cystic Fibrosis Reference Center (CRCM), Centre d'Investigation Clinique (CIC 1401), Bordeaux, France
- Centre de Recherche Cardio-Thoracique de Bordeaux, INSERM U1045, Bordeaux University, Bordeaux, France
| | - Candice Tetard
- Bordeaux University Hospital, Hôpital Pellegrin-Enfants, Paediatric Cystic Fibrosis Reference Center (CRCM), Centre d'Investigation Clinique (CIC 1401), Bordeaux, France
| | - Thierry Lamireau
- Bordeaux University Hospital, Hôpital Pellegrin-Enfants, Paediatric Cystic Fibrosis Reference Center (CRCM), Centre d'Investigation Clinique (CIC 1401), Bordeaux, France
| | - Michael Fayon
- Bordeaux University Hospital, Hôpital Pellegrin-Enfants, Paediatric Cystic Fibrosis Reference Center (CRCM), Centre d'Investigation Clinique (CIC 1401), Bordeaux, France
- Centre de Recherche Cardio-Thoracique de Bordeaux, INSERM U1045, Bordeaux University, Bordeaux, France
| | - Stéphanie Bui
- Bordeaux University Hospital, Hôpital Pellegrin-Enfants, Paediatric Cystic Fibrosis Reference Center (CRCM), Centre d'Investigation Clinique (CIC 1401), Bordeaux, France
- Centre de Recherche Cardio-Thoracique de Bordeaux, INSERM U1045, Bordeaux University, Bordeaux, France
| | - Raphaël Enaud
- Bordeaux University Hospital, Hôpital Pellegrin-Enfants, Paediatric Cystic Fibrosis Reference Center (CRCM), Centre d'Investigation Clinique (CIC 1401), Bordeaux, France
- Centre de Recherche Cardio-Thoracique de Bordeaux, INSERM U1045, Bordeaux University, Bordeaux, France
- Correspondence: Raphaël Enaud
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10
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Wu Q, Liang X, Hou X, Song Z, Bouhamdan M, Qiu Y, Koike Y, Rajagopalan C, Wei HG, Jiang H, Hish G, Zhang J, Chen YE, Jin JP, Xu J, Zhang K, Sun F. Cystic fibrosis rabbits develop spontaneous hepatobiliary lesions and CF-associated liver disease (CFLD)-like phenotypes. PNAS NEXUS 2023; 2:pgac306. [PMID: 36712930 PMCID: PMC9832953 DOI: 10.1093/pnasnexus/pgac306] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 12/22/2022] [Indexed: 12/25/2022]
Abstract
Cystic fibrosis (CF) is an autosomal recessive genetic disease affecting multiple organs. Approximately 30% CF patients develop CF-related liver disease (CFLD), which is the third most common cause of morbidity and mortality of CF. CFLD is progressive, and many of the severe forms eventually need liver transplantation. The mechanistic studies and therapeutic interventions to CFLD are unfortunately very limited. Utilizing the CRISPR/Cas9 technology, we recently generated CF rabbits by introducing mutations to the rabbit CF transmembrane conductance regulator (CFTR) gene. Here we report the liver phenotypes and mechanistic insights into the liver pathogenesis in these animals. CF rabbits develop spontaneous hepatobiliary lesions and abnormal biliary secretion accompanied with altered bile acid profiles. They exhibit nonalcoholic steatohepatitis (NASH)-like phenotypes, characterized by hepatic inflammation, steatosis, and fibrosis, as well as altered lipid profiles and diminished glycogen storage. Mechanistically, our data reveal that multiple stress-induced metabolic regulators involved in hepatic lipid homeostasis were up-regulated in the livers of CF-rabbits, and that endoplasmic reticulum (ER) stress response mediated through IRE1α-XBP1 axis as well as NF-κB- and JNK-mediated inflammatory responses prevail in CF rabbit livers. These findings show that CF rabbits manifest many CFLD-like phenotypes and suggest targeting hepatic ER stress and inflammatory pathways for potential CFLD treatment.
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Affiliation(s)
- Qingtian Wu
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Xiubin Liang
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Xia Hou
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Zhenfeng Song
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Mohamad Bouhamdan
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Yining Qiu
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Yui Koike
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Carthic Rajagopalan
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Hong-Guang Wei
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Hong Jiang
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Gerry Hish
- Laboratory Animal Resources, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Jifeng Zhang
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Y Eugene Chen
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Jian-Ping Jin
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Jie Xu
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Kezhong Zhang
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Fei Sun
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, USA
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11
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Cystic Fibrosis Patients with F508del/Minimal Function Genotype: Laboratory and Nutritional Evaluations after One Year of Elexacaftor/Tezacaftor/Ivacaftor Treatment. J Clin Med 2022; 11:jcm11236900. [PMID: 36498475 PMCID: PMC9735556 DOI: 10.3390/jcm11236900] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/03/2022] [Accepted: 11/21/2022] [Indexed: 11/24/2022] Open
Abstract
The last ten years have been characterized by an enormous step forward in the therapy and management of patients with Cystic Fibrosis (CF), thanks to the development and combination of Cystic Fibrosis Transmembrane Receptor (CFTR) correctors and potentiators. Specifically, the last approved triple combination elexacaftor/tezacaftor/ivacaftor has been demonstrated to improve lung function in CF patients with both homozygous Phe508del and Phe508del/minimal function genotypes. Here we have assessed the effect of elexacaftor/tezacaftor/ivacaftor in patients carrying the Phe508del/minimal function genotype (n = 20) after one year of treatments on liver function and nutrient absorption with a focus on lipid metabolism. We show that weight, BMI, and albumin significantly increase, suggesting a positive impact of the treatment on nutrient absorption. Furthermore, cholesterol levels as a biomarker of lipid metabolism increased significantly after one year of treatment. Most importantly, we suggest that these results were not dependent on the diet composition, possibly indicating that the drug improves the hepatic synthesis and secretion of proteins and cholesterol.
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12
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Ramsey ML, Li SS, Lara LF, Gokun Y, Akshintala VS, Conwell DL, Heintz J, Kirkby SE, McCoy KS, Papachristou GI, Patel A, Singh VK, Hart PA. Cystic fibrosis transmembrane conductance regulator modulators and the exocrine pancreas: A scoping review. J Cyst Fibros 2022; 22:193-200. [PMID: 36008229 DOI: 10.1016/j.jcf.2022.08.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 07/21/2022] [Accepted: 08/10/2022] [Indexed: 11/17/2022]
Abstract
BACKGROUND Cystic fibrosis transmembrane conductance regulator (CFTR) modulators improve pulmonary outcomes in subjects with cystic fibrosis (CF); however, the effects on pancreatic manifestations are not well characterized. We hypothesized that CFTR modulators would improve measures of exocrine pancreatic function and outcomes. METHODS We performed a systematic search to identify studies reporting measures of the exocrine pancreas in humans treated with CFTR modulators. Only studies reporting baseline and on-treatment assessments were included. RESULTS Of 630 identified studies, 41 met inclusion criteria. CFTR modulators reduced acute pancreatitis events by 85% overall (rate ratio 0.15, 95% confidence interval (CI) 0.04, 0.52), with a greater effect seen in the subgroup with pancreas sufficient CF (PS-CF) (rate ratio 0.13 (95% CI 0.03, 0.53). Among 293 subjects with baseline and on-treatment evaluation of pancreas sufficiency, 253 were pancreas insufficient at baseline and 54 (21.3%) converted to pancreas sufficiency. Of 32 subjects with baseline FE-1 values <200 mcg/g, 16 (50%) increased to ≥200 mcg/g. Serum trypsin decreased by a mean of 565.9 ng/mL (standard deviation (SD) 311.8), amylase decreased by 38.2 U/L (SD 57.6), and lipase decreased by 232.3 U/L (SD 247.7). CONCLUSIONS CFTR modulator use reduces acute pancreatitis frequency and improves indirect measures of exocrine pancreas function. Future interventional studies that evaluate the mechanism and impact of CFTR modulators on acute pancreatitis and pancreas sufficiency in patients with CFTR dysfunction are warranted.
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Affiliation(s)
- Mitchell L Ramsey
- Division of Gastroenterology, Hepatology, and Nutrition, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Susan S Li
- Division of General Internal Medicine, The Ohio State University Wexner Medical Center, USA
| | - Luis F Lara
- Division of Gastroenterology, Hepatology, and Nutrition, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Yevgeniya Gokun
- Center for Biostatistics, Department of Biomedical Informatics, The Ohio State University College of Medicine, USA
| | - Venkata S Akshintala
- Pancreatitis Center, Division of Gastroenterology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Darwin L Conwell
- Division of Gastroenterology, Hepatology, and Nutrition, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - John Heintz
- Division of Pediatric Pulmonology and Sleep Medicine, Nationwide Children's Hospital, Columbus, OH, USA
| | - Stephen E Kirkby
- Division of Pulmonary and Critical Care Medicine, The Ohio State University Wexner Medical Center, USA
| | - Karen S McCoy
- Division of Pediatric Pulmonology and Sleep Medicine, Nationwide Children's Hospital, Columbus, OH, USA
| | - Georgios I Papachristou
- Division of Gastroenterology, Hepatology, and Nutrition, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Alpa Patel
- Division of Pediatric Pulmonology and Sleep Medicine, Nationwide Children's Hospital, Columbus, OH, USA
| | - Vikesh K Singh
- Pancreatitis Center, Division of Gastroenterology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Phil A Hart
- Division of Gastroenterology, Hepatology, and Nutrition, The Ohio State University Wexner Medical Center, Columbus, OH, USA.
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13
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Thambuluru SR, Kyazimzade S, Despotes KA, Kirk D, Goralski JL. Acute ST-elevation myocardial infarction in two young women with cystic fibrosis and cystic fibrosis-related diabetes. J Cyst Fibros 2021; 21:e44-e47. [PMID: 34911664 DOI: 10.1016/j.jcf.2021.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 11/23/2021] [Indexed: 10/19/2022]
Abstract
Ischemic heart disease is rarely reported in people with cystic fibrosis (PwCF) despite multiple potential risk factors. Here we report two cases of ST elevation myocardial infarction (STEMI), both in young women with cystic fibrosis (CF) and cystic fibrosis related diabetes (CFRD). These cases illustrate the importance of considering myocardial injury/infarction in the differential diagnosis of patients with CF and chest pain or shortness of breath, and addressing the growing risk of cardiovascular disease (CVD).
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Affiliation(s)
- Sirisha Reddy Thambuluru
- Division of Endocrinology & Metabolism, University of North Carolina, Chapel Hill, NC, United States
| | - Sayyad Kyazimzade
- Department of Internal Medicine, University of North Carolina, Chapel Hill, NC, United States
| | - Katherine A Despotes
- Division of Pulmonary Diseases and Critical Care Medicine, University of North Carolina, Chapel Hill, NC, United States; Division of Pediatric Pulmonology, University of North Carolina, Chapel Hill, NC, United States
| | - Deepa Kirk
- Division of Endocrinology & Metabolism, University of North Carolina, Chapel Hill, NC, United States
| | - Jennifer L Goralski
- Division of Pulmonary Diseases and Critical Care Medicine, University of North Carolina, Chapel Hill, NC, United States; Division of Pediatric Pulmonology, University of North Carolina, Chapel Hill, NC, United States.
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14
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Abstract
PURPOSE OF REVIEW Liver disease (CFLD) as a complication of cystic fibrosis is recognized as a more severe disease phenotype in both children and adults. We review recent advances in understanding the disease mechanism and consider the implications of new strategies for the diagnosis and management of cystic fibrosis in those with evidence of clinically significant liver disease. RECENT FINDINGS Evidence suggests that the prevalence of CFLD has not declined with the introduction of newborn screening. Furthermore, children with CFLD, who have been diagnosed with cystic fibrosis following newborn screening continue to have a much higher mortality rate compared with those with no liver disease. There is further data suggesting noncirrhotic obliterative portal venopathy as the predominant pathological mechanism in the majority of children and young adults receiving a liver transplantation. Little progress has been made in developing an accurate noninvasive test for early diagnosis or monitoring disease progression in CFLD. The benefit of new modulator therapies is not well understood in those with established CFLD, whereas the risk of hepatotoxicity as a complication of treatment must be carefully monitored. SUMMARY Better understanding of the pathophysiology of CFLD would allow a standardized approach to diagnosis, with the potential to improve outcomes for those with CFLD.
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15
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CFTR Modulator Therapy with Lumacaftor/Ivacaftor Alters Plasma Concentrations of Lipid-Soluble Vitamins A and E in Patients with Cystic Fibrosis. Antioxidants (Basel) 2021; 10:antiox10030483. [PMID: 33808590 PMCID: PMC8003491 DOI: 10.3390/antiox10030483] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 12/20/2022] Open
Abstract
RATIONALE Cystic fibrosis (CF), caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene, leads to impaired pancreatic function and therefore reduced intestinal absorption of lipids and fat-soluble vitamins especially in patients with CF developing pancreatic insufficiency (PI). Previous studies showed that CFTR modulator therapy with lumacaftor-ivacaftor (LUM/IVA) in Phe508del-homozygous patients with CF results in improvement of pulmonary disease and thriving. However, the effects of LUM/IVA on plasma concentration of the lipid soluble vitamins A and E remain unknown. OBJECTIVES To investigate the course of plasma vitamin A and E in patients with CF under LUM/IVA therapy. METHODS Data from annual follow-up examinations of patients with CF were obtained to assess clinical outcomes including pulmonary function status, body mass index (BMI), and clinical chemistry as well as fat-soluble vitamins in Phe508del-homozygous CF patients before initiation and during LUM/IVA therapy. RESULTS Patients with CF receiving LUM/IVA improved substantially, including improvement in pulmonary inflammation, associated with a decrease in blood immunoglobulin G (IgG) from 9.4 to 8.2 g/L after two years (p < 0.001). During the same time, plasma vitamin A increased significantly from 1.2 to 1.6 µmol/L (p < 0.05), however, levels above the upper limit of normal were not detected in any of the patients. In contrast, plasma vitamin E as vitamin E/cholesterol ratio decreased moderately over the same time from 6.2 to 5.5 µmol/L (p < 0.01). CONCLUSIONS CFTR modulator therapy with LUM/IVA alters concentrations of vitamins A and vitamin E in plasma. The increase of vitamin A must be monitored critically to avoid hypervitaminosis A in patients with CF.
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16
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Staufer K. Current Treatment Options for Cystic Fibrosis-Related Liver Disease. Int J Mol Sci 2020; 21:E8586. [PMID: 33202578 PMCID: PMC7696864 DOI: 10.3390/ijms21228586] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 11/08/2020] [Accepted: 11/11/2020] [Indexed: 02/07/2023] Open
Abstract
Cystic Fibrosis-related liver disease (CFLD) has become a leading cause of morbidity and mortality in patients with Cystic Fibrosis (CF), and affects children and adults. The understanding of the pathogenesis of CFLD is key in order to develop efficacious treatments. However, it remains complex, and has not been clarified to the last. The search for a drug might be additionally complicated due to the diverse clinical picture and lack of a unified definition of CFLD. Although ursodeoxycholic acid has been used for decades, its efficacy in CFLD is controversial, and the potential of Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) modulators and targeted gene therapy in CFLD needs to be defined in the near future. This review focuses on the current knowledge on treatment strategies for CFLD based on pathomechanistic viewpoints.
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Affiliation(s)
- Katharina Staufer
- Department of Visceral Surgery and Medicine, Inselspital, University Hospital Bern, 3010 Bern, Switzerland; ; Tel.: +41-31-63-2-74-88
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