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McDonald CM, Reid EK, Pohl JF, Yuzyuk TK, Padula LM, Vavrina K, Altman K. Cystic fibrosis and fat malabsorption: Pathophysiology of the cystic fibrosis gastrointestinal tract and the impact of highly effective CFTR modulator therapy. Nutr Clin Pract 2024; 39 Suppl 1:S57-S77. [PMID: 38429959 DOI: 10.1002/ncp.11122] [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: 09/28/2023] [Revised: 11/28/2023] [Accepted: 12/28/2023] [Indexed: 03/03/2024] Open
Abstract
Cystic fibrosis (CF) is a progressive, genetic, multi-organ disease affecting the respiratory, digestive, endocrine, and reproductive systems. CF can affect any aspect of the gastrointestinal (GI) tract, including the esophagus, stomach, small intestine, colon, pancreas, liver, and gall bladder. GI pathophysiology associated with CF results from CF membrane conductance regulator (CFTR) dysfunction. The majority of people with CF (pwCF) experience exocrine pancreatic insufficiency resulting in malabsorption of nutrients and malnutrition. Additionally, other factors can cause or worsen fat malabsorption, including the potential for short gut syndrome with a history of meconium ileus, hepatobiliary diseases, and disrupted intraluminal factors, such as inadequate bile salts, abnormal pH, intestinal microbiome changes, and small intestinal bacterial overgrowth. Signs and symptoms associated with fat malabsorption, such as abdominal pain, bloating, malodorous flatus, gastroesophageal reflux, nausea, anorexia, steatorrhea, constipation, and distal intestinal obstruction syndrome, are seen in pwCF despite the use of pancreatic enzyme replacement therapy. Given the association of poor nutrition status with lung function decline and increased mortality, aggressive nutrition support is essential in CF care to optimize growth in children and to achieve and maintain a healthy body mass index in adults. The introduction of highly effective CFTR modulator therapy and other advances in CF care have profoundly changed the course of CF management. However, GI symptoms in some pwCF may persist. The use of current knowledge of the pathophysiology of the CF GI tract as well as appropriate, individualized management of GI symptoms continue to be integral components of care for pwCF.
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Affiliation(s)
| | - Elizabeth K Reid
- Cystic Fibrosis Center, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - John F Pohl
- Pediatric Gastroenterology, Primary Children's Hospital, Salt Lake City, Utah, USA
| | - Tatiana K Yuzyuk
- Pathology, University of Utah School of Medicine, Salt Lake City, Utah, USA
- ARUP Institute for Clinical & Experimental Pathology, Salt Lake City, Utah, USA
| | - Laura M Padula
- Pediatric Specialty, University Health, San Antonio, Texas, USA
| | - Kay Vavrina
- Pediatric Specialty, University Health, San Antonio, Texas, USA
| | - Kimberly Altman
- Gunnar Esiason Adult Cystic Fibrosis and Lung Center, Columbia University Medical Center, New York, New York, USA
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Sathe M, Moshiree B, Aliaj E, Lee M, Hudson J, Gifford A, Attel S, Gamel B, Freedman SD, Schwarzenberg SJ, Freeman AJ. Need to study simplification of gastrointestinal medication regimen in cystic fibrosis in the era of highly effective modulators. Pediatr Pulmonol 2023; 58:811-818. [PMID: 36448312 DOI: 10.1002/ppul.26257] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/13/2022] [Accepted: 11/25/2022] [Indexed: 12/03/2022]
Abstract
INTRODUCTION The success of highly effective modulator therapy (HEMT) has led to consideration of simpler regimens for people with CF (PwCF) with opportunities to modify burdensome regimens. Despite the intuitive appeal of discontinuing chronic therapies no longer necessary, this process should be pursued systematically to ensure safety, adherence, and validate patient-centered preferences. We designed a questionnaire to determine the state of use of acid-suppressive medications (ASM) and pancreatic enzyme therapy (PERT), current self-withdrawal and provider-directed withdrawal practices, and interest in a standardized withdrawal study. METHODS In collaboration with CF Foundation (CFF), a questionnaire was developed and distributed to members of Community Voice (CV, comprised of PwCF and their loved ones), and CF providers regarding the need to study simplifying the gastrointestinal (GI) regimen for PwCF on HEMT. RESULTS Approximately 20-40% of CV or CF providers have decreased or stopped ASM for those on HEMT. For PERT, CV and CF providers have decreased dose (34%-48% and approximately 25%, respectively) more often than having stopped it altogether (13%-24% and 3%-12%, respectively). Cumulatively, there is interest in pursuing research in this area (86% CV and 89% CF providers) and willingness to enroll in such a study (80% CV and 89% CF providers). CONCLUSION Systematically studying the withdrawal of common GI medications, ASM and PERT, is important to CV and CF providers. Decreases in dosing and withdrawal are already taking place without evidence to support this practice. This questionnaire is the first step in designing a GI medication simplification study in PwCF on HEMT.
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Affiliation(s)
- Meghana Sathe
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, University of Texas Southwestern/Children's Health, Dallas, Texas, USA
| | - Baha Moshiree
- Division of Gastroenterology, Wake Forest/Atrium Health, Charlotte, North Carolina, USA
| | - Enid Aliaj
- Cystic Fibrosis Foundation: Community Partnerships, Bethesda, Maryland, USA
| | - MinJae Lee
- Division of Biostatistics, Department of Population & Data Sciences, University of Texas Southwestern, Dallas, Texas, USA
| | - Jessica Hudson
- Cystic Fibrosis Foundation: Community Partnerships, Bethesda, Maryland, USA
| | - Alex Gifford
- Division of Pulmonary, Critical Care, and Sleep Medicine, University Hospitals Cleveland Medical Center, Ohio, Cleveland, USA.,Division of Pediatric Pulmonology, Rainbow Babies and Children's Hospital, Cleveland, Ohio, USA
| | - Susan Attel
- Patient Representative, Children's Health, Dallas, Texas, USA
| | - Breck Gamel
- Patient Representative, Children's Health, Dallas, Texas, USA
| | - Steven D Freedman
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Sarah Jane Schwarzenberg
- University of Minnesota/MHealth Fairview Masonic Children's Hospital, Minneapolis, Minnesota, USA
| | - A Jay Freeman
- Division of Gastroenterology, Hepatology and Nutrition, Nationwide Children's Hospital/Ohio State School of Medicine, Columbus, Ohio, USA
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Ritivoiu ME, Drăgoi CM, Matei D, Stan IV, Nicolae AC, Craiu M, Dumitrescu IB, Ciolpan AA. Current and Future Therapeutic Approaches of Exocrine Pancreatic Insufficiency in Children with Cystic Fibrosis in the Era of Personalized Medicine. Pharmaceutics 2023; 15:162. [PMID: 36678791 PMCID: PMC9862205 DOI: 10.3390/pharmaceutics15010162] [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: 11/15/2022] [Revised: 12/17/2022] [Accepted: 12/28/2022] [Indexed: 01/05/2023] Open
Abstract
This review presents current updates of pancreatic enzyme replacement therapy in children with cystic fibrosis based on literature published in the last decade and some special considerations regarding pancreatic enzyme replacement therapy in the era of new therapies, such as cystic fibrosis transmembrane conductance regulator modulator therapies. Few articles evaluate the efficacy of pancreatic enzyme replacement therapy in the pediatric population, and most studies also included children and adults with cystic fibrosis. Approximately 85% of cystic fibrosis patients have exocrine pancreatic insufficiency and need pancreatic enzyme replacement therapy. Fecal elastase is the most commonly used diagnostic test for exocrine pancreatic insufficiency, although this value can fluctuate over time. While it is used as a diagnostic test, it cannot be used for monitoring the effectiveness of pancreatic enzyme replacement therapy and for adjusting doses. Pancreatic enzyme replacement therapy, the actual treatment for exocrine pancreatic insufficiency, is essential in children with cystic fibrosis to prevent malabsorption and malnutrition and needs to be urgently initiated. This therapy presents many considerations for physicians, patients, and their families, including types and timing of administration, dose monitoring, and therapy failures. Based on clinical trials, pancreatic enzyme replacement therapy is considered effective and well-tolerated in children with cystic fibrosis. An important key point in cystic fibrosis treatment is the recent hypothesis that cystic fibrosis transmembrane conductance regulator modulators could improve pancreatic function, further studies being essential. Pancreatic enzyme replacement therapy is addressed a complication of the disease (exocrine pancreatic insufficiency), while modulators target the defective cystic fibrosis transmembrane conductance regulator protein. Exocrine pancreatic insufficiency in cystic fibrosis remains an active area of research in this era of cystic fibrosis transmembrane conductance regulator modulator therapies. This new therapy could represent an example of personalized medicine in cystic fibrosis patients, with each class of modulators being addressed to patients with specific genetic mutations.
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Affiliation(s)
- Mirela-Elena Ritivoiu
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Alessandrescu-Rusescu National Institute for Mother and Child Health, 020395 Bucharest, Romania
| | - Cristina Manuela Drăgoi
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 020956 Bucharest, Romania
| | - Dumitru Matei
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Alessandrescu-Rusescu National Institute for Mother and Child Health, 020395 Bucharest, Romania
| | - Iustina Violeta Stan
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Alessandrescu-Rusescu National Institute for Mother and Child Health, 020395 Bucharest, Romania
| | - Alina Crenguţa Nicolae
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 020956 Bucharest, Romania
| | - Mihai Craiu
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Alessandrescu-Rusescu National Institute for Mother and Child Health, 020395 Bucharest, Romania
| | - Ion-Bogdan Dumitrescu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 020956 Bucharest, Romania
| | - Alina Angelica Ciolpan
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Alessandrescu-Rusescu National Institute for Mother and Child Health, 020395 Bucharest, Romania
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Understanding Cystic Fibrosis Comorbidities and Their Impact on Nutritional Management. Nutrients 2022; 14:nu14051028. [PMID: 35268004 PMCID: PMC8912424 DOI: 10.3390/nu14051028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/23/2022] [Accepted: 02/25/2022] [Indexed: 11/17/2022] Open
Abstract
Cystic fibrosis (CF) is a chronic, multisystem disease with multiple comorbidities that can significantly affect nutrition and quality of life. Maintaining nutritional adequacy can be challenging in people with cystic fibrosis and has been directly associated with suboptimal clinical outcomes. Comorbidities of CF can result in significantly decreased nutritional intake and intestinal absorption, as well as increased metabolic demands. It is crucial to utilize a multidisciplinary team with expertise in CF to optimize growth and nutrition, where patients with CF and their loved ones are placed in the center of the care model. Additionally, with the advent of highly effective modulators (HEMs), CF providers have begun to identify previously unrecognized nutritional issues, such as obesity. Here, we will review and summarize commonly encountered comorbidities and their nutritional impact on this unique population.
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Lahiri T, Sullivan JS. Recent advances in the early treatment of cystic fibrosis: Bridging the gap to highly effective modulator therapy. Pediatr Pulmonol 2022; 57 Suppl 1:S60-S74. [PMID: 34473419 DOI: 10.1002/ppul.25660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 08/22/2021] [Accepted: 09/01/2021] [Indexed: 11/08/2022]
Abstract
Highly effective modulator therapy (HEMT) for cystic fibrosis (CF) has been touted as one of the greatest advances to date in CF care. As these therapies are now available for many older children and adults with CF, marked improvement of their nutritional status, pulmonary and gastrointestinal symptoms has been observed. However, most infants and younger children are not current candidates for HEMT due to age and/or cystic fibrosis transmembrane conductance regulator (CFTR) mutation. For these young children, it is essential to provide rigorous monitoring and care to avoid potential disease sequelae while awaiting HEMT availability. The following article highlights recent advances in the care of infants and young children with CF with regard to surveillance and treatment of nutritional, pulmonary, and gastrointestinal disorders. Recent clinical trials in this population are also reviewed.
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Affiliation(s)
- Thomas Lahiri
- Divisions of Pediatric Pulmonology and Gastroenterology, University of Vermont Children's Hospital, Burlington, Vermont, USA
| | - Jillian S Sullivan
- Divisions of Pediatric Pulmonology and Gastroenterology, University of Vermont Children's Hospital, Burlington, Vermont, USA
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