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Anton-Păduraru DT, Azoicăi AN, Trofin F, Murgu AM, Mîndru DE, Bocec AS, Halițchi COI, Zota GR, Păduraru D, Nastase EV. Diagnosis, Management, and Prognosis of Cystic Fibrosis-Related Liver Disease in Children. Diagnostics (Basel) 2024; 14:538. [PMID: 38473009 DOI: 10.3390/diagnostics14050538] [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: 01/23/2024] [Revised: 02/28/2024] [Accepted: 03/01/2024] [Indexed: 03/14/2024] Open
Abstract
Cystic fibrosis (CF) is a multifaceted disorder predominantly investigated for its pulmonary manifestations, yet patients with CF also exhibit a spectrum of extrapulmonary manifestations, notably those involving the hepatobiliary system. The latter constitutes the third leading cause of morbidity and mortality in individuals with CF. Cystic fibrosis-related liver disease (CFLD), with an escalating prevalence, manifests diverse clinical presentations ranging from hepatomegaly to cirrhosis and hepatopulmonary syndrome. Consequently, early detection and appropriate management are imperative for sustaining the health and influencing the quality of life of CF patients afflicted with CFLD. This review aims to consolidate existing knowledge by providing a comprehensive overview of hepatobiliary manifestations associated with CF. It delineates the clinical hepatobiliary manifestations, diagnostic methodologies, incorporating minimally invasive markers, and therapeutic approaches, encompassing the impact of novel CFTR modulators on CFLD. Given the exigency of early diagnosis and the intricate management of CFLD, a multidisciplinary team approach is essential to optimize care and enhance the quality of life for this subset of patients. In conclusion, recognizing CF as more than solely a pulmonary ailment, the authors underscore the imperative for further clinical investigations to establish a more robust evidence base for CFLD management within the continuum of this chronic disease.
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Affiliation(s)
- Dana-Teodora Anton-Păduraru
- Department of Mother and Child Medicine, "Grigore T. Popa" University of Medicine and Pharmacy, 700115 Iaṣi, Romania
- "Sf. Maria" Children Emergency Hospital, 700309 Iasi, Romania
| | - Alice Nicoleta Azoicăi
- Department of Mother and Child Medicine, "Grigore T. Popa" University of Medicine and Pharmacy, 700115 Iaṣi, Romania
- "Sf. Maria" Children Emergency Hospital, 700309 Iasi, Romania
| | - Felicia Trofin
- Department of Preventive Medicine and Interdisciplinarity-Microbiology, "Grigore T. Popa" University of Medicine and Pharmacy, 700115 Iaṣi, Romania
| | - Alina Mariela Murgu
- Department of Mother and Child Medicine, "Grigore T. Popa" University of Medicine and Pharmacy, 700115 Iaṣi, Romania
- "Sf. Maria" Children Emergency Hospital, 700309 Iasi, Romania
| | - Dana Elena Mîndru
- Department of Mother and Child Medicine, "Grigore T. Popa" University of Medicine and Pharmacy, 700115 Iaṣi, Romania
- "Sf. Maria" Children Emergency Hospital, 700309 Iasi, Romania
| | - Ana Simona Bocec
- Department of Mother and Child Medicine, "Grigore T. Popa" University of Medicine and Pharmacy, 700115 Iaṣi, Romania
| | | | - Gabriela Rusu Zota
- Department of Pharmacology, Clinical Pharmacology and Algesiology, "Grigore T. Popa" University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Diana Păduraru
- "Dr. C. I. Parhon" Clinical Hospital, 700503 Iaṣi, Romania
| | - Eduard Vasile Nastase
- Department of Internal Medicine II-Infectious Diseases, "Grigore T. Popa" University of Medicine and Pharmacy, 700115 Iasi, Romania
- Clinical Hospital of Infectious Diseases "Sf. Parascheva", 700116 Iasi, Romania
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2
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Siegel MJ, Leung DH, Molleston JP, Ye W, Paranjape SM, Freeman AJ, Palermo JJ, Stoll J, Masand P, Karmazyn B, Harned R, Ling SC, Navarro OM, Karnsakul W, Alazraki A, Schwarzenberg SJ, Towbin AJ, Alonso EM, Nicholas JL, Green N, Otto RK, Magee JC, Narkewicz MR. Heterogeneous liver on research ultrasound identifies children with cystic fibrosis at high risk of advanced liver disease. J Cyst Fibros 2023; 22:745-755. [PMID: 37032248 PMCID: PMC10523874 DOI: 10.1016/j.jcf.2023.03.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 03/28/2023] [Accepted: 03/29/2023] [Indexed: 04/11/2023]
Abstract
BACKGROUND This study examines whether heterogeneous (HTG) pattern on liver ultrasound (US) identifies children at risk for advanced cystic fibrosis liver disease (aCFLD). METHODS Prospective 6-year multicenter case-controlled cohort study. Children with pancreatic insufficient cystic fibrosis (CF) aged 3-12 years without known cirrhosis underwent screening US. Participants with HTG were matched (by age, Pseudomonas infection status and center) 1:2 with participants with normal (NL) US pattern. Clinical status and laboratory data were obtained annually and US bi-annually for 6 years. Primary endpoint was development of nodular (NOD) US pattern consistent with aCFLD. RESULTS 722 participants underwent screening US, with 65 HTG and 592 NL. Final cohort included 55 HTG and 116 NL with ≥ 1 follow-up US. ALT, AST, GGTP, FIB-4, GPR and APRI were higher, and platelets were lower in HTG compared to NL. HTG had a 9.5-fold increased incidence (95% confidence interval [CI]:3.4, 26.7, p<0.0001, 32.7% vs 3.4%) of NOD versus NL. HTG had a sensitivity of 82% and specificity of 75% for subsequent NOD. Negative predictive value of a NL US for subsequent NOD was 96%. Multivariate logistic prediction model that included baseline US, age, and log(GPR) improved the C-index to 0.90 compared to only baseline US (C-index 0.78). Based on survival analysis, 50% of HTG develop NOD after 8 years. CONCLUSIONS Research US finding of HTG identifies children with CF with a 30-50% risk for aCFLD. A score based on US pattern, age and GPR may refine the identification of individuals at high risk for aCFLD. CLINICAL TRIAL REGISTRATION Prospective Study of Ultrasound to Predict Hepatic Cirrhosis in CF: NCT 01,144,507 (observational study, no consort checklist).
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Affiliation(s)
- Marilyn J Siegel
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO, USA
| | - Daniel H Leung
- Division of Gastroenterology, Hepatology and Nutrition, Texas Children's Hospital, Department of Pediatrics, Baylor College of Medicine, Houston TX, USA
| | - Jean P Molleston
- Pediatric Gastroenterology, Hepatology and Nutrition, Riley Hospital for Children, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Wen Ye
- Department of Biostatistics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Shruti M Paranjape
- Division of Pediatric Pulmonology, John Hopkins School of Medicine, Baltimore, MD, USA
| | - A Jay Freeman
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Emory University School of Medicine, Atlanta, GA, USA
| | - Joseph J Palermo
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Janis Stoll
- Division of Gastroenterology and Nutrition, Washington University School of Medicine, St Louis, MO, USA
| | - Prakash Masand
- Division of Radiology, Texas Children's Hospital, Houston, TX, USA
| | - Boaz Karmazyn
- Pediatric Radiology, Riley Hospital for Children, Indianapolis, IN, USA
| | - Roger Harned
- Division of Pediatric Radiology, Children's Hospital Colorado and University of Colorado School of Medicine, Aurora, CO, USA
| | - Simon C Ling
- Division of Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
| | - Oscar M Navarro
- Department of Medical Imaging, Department of Diagnostic Imaging, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Wikrom Karnsakul
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, John Hopkins School of Medicine, Baltimore, MD, USA
| | - Adina Alazraki
- Department of Radiology, Emory University School of Medicine and Children's Healthcare of Atlanta, Egleston, Atlanta, GA, USA
| | - Sarah Jane Schwarzenberg
- Pediatric Gastroenterology, University of Minnesota Masonic Children's Hospital, Minneapolis, MN, USA
| | - Alex J Towbin
- Department of Radiology, Cincinnati Children's Hospital Medical Center and Department of Radiology, University of Cincinnati College of Medicine Cincinnati, OH, USA
| | - Estella M Alonso
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Ann & Robert H. Lurie Children's Hospital, Chicago, IL, USA
| | - Jennifer L Nicholas
- Department of Radiology, Case Western Reserve School of Medicine, University Hospitals Rainbow Babies and Children's Hospital, Cleveland, OH, USA
| | - Nicole Green
- Division of Gastroenterology and Hepatology, University of Washington and Seattle Children's Hospital, Seattle, WA, USA
| | - Randolph K Otto
- Department of Radiology, Seattle Children's Hospital, Seattle, WA, USA
| | - John C Magee
- Department of Surgery, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Michael R Narkewicz
- Children's Hospital Colorado and Section of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Digestive Health Institute, University of Colorado School of Medicine, Aurora, CO, USA.
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Yanda MK, Zeidan A, Cebotaru L. Ameliorating liver disease in an autosomal recessive polycystic kidney disease mouse model. Am J Physiol Gastrointest Liver Physiol 2023; 324:G404-G414. [PMID: 36880660 PMCID: PMC10085553 DOI: 10.1152/ajpgi.00255.2022] [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: 10/28/2022] [Revised: 02/27/2023] [Accepted: 02/27/2023] [Indexed: 03/08/2023]
Abstract
Systemic and portal hypertension, liver fibrosis, and hepatomegaly are manifestations associated with autosomal recessive polycystic kidney disease (ARPKD), which is caused by malfunctions of fibrocystin/polyductin (FPC). The goal is to understand how liver pathology occurs and to devise therapeutic strategies to treat it. We injected 5-day-old Pkhd1del3-4/del3-4 mice for 1 mo with the cystic fibrosis transmembrane conductance regulator (CFTR) modulator VX-809 designed to rescue processing and trafficking of CFTR folding mutants. We used immunostaining and immunofluorescence techniques to evaluate liver pathology. We assessed protein expression via Western blotting. We detected abnormal biliary ducts consistent with ductal plate abnormalities, as well as a greatly increased proliferation of cholangiocytes in the Pkhd1del3-4/del3-4 mice. CFTR was present in the apical membrane of cholangiocytes and increased in the Pkhd1del3-4/del3-4 mice, consistent with a role for apically located CFTR in enlarged bile ducts. Interestingly, we also found CFTR in the primary cilium, in association with polycystin (PC2). Localization of CFTR and PC2 and overall length of the cilia were increased in the Pkhd1del3-4/del3-4 mice. In addition, several of the heat shock proteins; 27, 70, and 90 were upregulated, suggesting that global changes in protein processing and trafficking had occurred. We found that a deficit of FPC leads to bile duct abnormalities, enhanced cholangiocyte proliferation, and misregulation of heat shock proteins, which all returned toward wild type (WT) values following VX-809 treatment. These data suggest that CFTR correctors can be useful as therapeutics for ARPKD. Given that these drugs are already approved for use in humans, they can be fast-tracked for clinical use.NEW & NOTEWORTHY ARPKD is a multiorgan genetic disorder resulting in newborn morbidity and mortality. There is a critical need for new therapies to treat this disease. We show that persistent cholangiocytes proliferation occurs in a mouse model of ARPKD along with mislocalized CFTR and misregulated heat shock proteins. We found that VX-809, a CFTR modulator, inhibits proliferation and limits bile duct malformation. The data provide a therapeutic pathway for strategies to treat ADPKD.
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Affiliation(s)
- Murali K Yanda
- Departments of Medicine and Physiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Adi Zeidan
- Departments of Medicine and Physiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Liudmila Cebotaru
- Departments of Medicine and Physiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
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4
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H E, CR H, S D, EA E. 2D Shear Wave Elastography, a promising screening tool for Cystic Fibrosis liver disease, shows a correlation between vitamin D and liver stiffness. J Cyst Fibros 2022; 21:873-877. [DOI: 10.1016/j.jcf.2022.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 05/24/2022] [Accepted: 06/17/2022] [Indexed: 11/25/2022]
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Therapeutic Potential for CFTR Correctors in Autosomal Recessive Polycystic Kidney Disease. Cell Mol Gastroenterol Hepatol 2021; 12:1517-1529. [PMID: 34329764 PMCID: PMC8529398 DOI: 10.1016/j.jcmgh.2021.07.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND & AIMS Autosomal recessive polycystic kidney disease (ARPKD) is caused by mutations in PKHD1, encoding fibrocystin/polyductin (FPC). Severe disease occurs in perinates. Those who survive the neonatal period face a myriad of comorbidities, including systemic and portal hypertension, liver fibrosis, and hepatosplenomegaly. The goal here was to uncover therapeutic strategies for ARPKD. METHODS We used wild-type and an FPC-mutant cholangiocyte cell line in 3-dimenional cysts and in confluent monolayers to evaluate protein expression using western blotting and protein trafficking using confocal microscopy. RESULTS We found that the protein level of the cystic fibrosis transmembrane conductance regulator (CFTR) was downregulated. The levels of heat shock proteins (HSPs) were altered in the FPC-mutant cholangiocytes, with HSP27 being downregulated and HSP90 and HSP70 upregulated. FPC-mutant cholangiocytes formed cysts, but normal cells did not. Cyst growth could be reduced by increasing HSP27 protein levels, by HSP90 and HSP70 inhibitor treatments, by silencing HSP90 through messenger RNA inhibition, or by the novel approach of treating the cysts with the CFTR corrector VX-809. In wild-type cholangiocytes, CFTR is present in both apical and basolateral membranes. FPC malfunction resulted in altered colocalization of CFTR with both apical and basolateral membranes. Whereas, treatment with VX-809, increasing HSP27 or inhibiting HSP70 or HSP90 restored CFTR localization toward normal values. CONCLUSIONS FPC malfunction induces the formation of cysts, which are fueled by alterations in HSPs and in CFTR protein levels and miss-localization. We suggest that CFTR correctors, already in clinical use to treat cystic fibrosis, could also be used as a treatment for ARPKD.
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Orro A, Uggeri M, Rusnati M, Urbinati C, Pedemonte N, Pesce E, Moscatelli M, Padoan R, Cichero E, Fossa P, D'Ursi P. In silico drug repositioning on F508del-CFTR: A proof-of-concept study on the AIFA library. Eur J Med Chem 2021; 213:113186. [PMID: 33472120 DOI: 10.1016/j.ejmech.2021.113186] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 01/07/2021] [Accepted: 01/07/2021] [Indexed: 12/14/2022]
Abstract
Computational drug repositioning is of growing interest to academia and industry, for its ability to rapidly screen a huge number of candidates in silico (exploiting comprehensive drug datasets) together with reduced development cost and time. The potential of drug repositioning has not been fully evaluated yet for cystic fibrosis (CF), a disease mainly caused by deletion of Phe 508 (F508del) of the cystic fibrosis transmembrane conductance regulator (CFTR) protein. F508del-CFTR is thus withheld in the endoplasmic reticulum and rapidly degraded by the ubiquitin/proteasome system. CF is still a fatal disease. Nowadays, it is treatable by some CFTR-rescuing drugs, but new-generation drugs with stronger therapeutic benefits and fewer side effects are still awaited. In this manuscript we report about the results of a pilot computational drug repositioning screening in search of F508del-CFTR-targeted drugs performed on AIFA library by means of a dedicated computational pipeline and surface plasmon resonance binding assay to experimentally validate the computational findings.
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Affiliation(s)
- Alessandro Orro
- Institute for Biomedical Technologies, National Research Council (ITB-CNR), Segrate, MI, Italy
| | - Matteo Uggeri
- Institute for Biomedical Technologies, National Research Council (ITB-CNR), Segrate, MI, Italy; Department of Pharmacy, Section of Medicinal Chemistry, School of Medical and Pharmaceutical Sciences, University of Genova, Genova, Italy
| | - Marco Rusnati
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Chiara Urbinati
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | | | - Emanuela Pesce
- UOC Genetica Medica, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Marco Moscatelli
- Institute for Biomedical Technologies, National Research Council (ITB-CNR), Segrate, MI, Italy
| | - Rita Padoan
- Department of Pediatrics, Regional Support Centre for Cystic Fibrosis, Children's Hospital-ASST Spedali Civili, University of Brescia, Brescia, Italy
| | - Elena Cichero
- Department of Pharmacy, Section of Medicinal Chemistry, School of Medical and Pharmaceutical Sciences, University of Genova, Genova, Italy
| | - Paola Fossa
- Department of Pharmacy, Section of Medicinal Chemistry, School of Medical and Pharmaceutical Sciences, University of Genova, Genova, Italy
| | - Pasqualina D'Ursi
- Institute for Biomedical Technologies, National Research Council (ITB-CNR), Segrate, MI, Italy.
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7
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Siegel MJ, Freeman AJ, Ye W, Palermo JJ, Molleston JP, Paranjape SM, Stoll J, Leung D, Masand P, Karmazyn B, Harned R, Ling SC, Navarro OM, Karnsakul W, Alazraki A, Schwarzenberg SJ, Seidel FG, Towbin A, Alonso EM, Nicholas JL, Murray KF, Otto RK, Sherker AH, Magee JC, Narkewicz MR. Heterogeneous Liver on Research Ultrasound Identifies Children with Cystic Fibrosis at High Risk of Advanced Liver Disease: Interim Results of a Prospective Observational Case-Controlled Study. J Pediatr 2020; 219:62-69.e4. [PMID: 32061406 PMCID: PMC7096278 DOI: 10.1016/j.jpeds.2019.12.033] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/21/2019] [Accepted: 12/13/2019] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To assess if a heterogeneous pattern on research liver ultrasound examination can identify children at risk for advanced cystic fibrosis (CF) liver disease. STUDY DESIGN Planned 4-year interim analysis of a 9-year multicenter, case-controlled cohort study (Prospective Study of Ultrasound to Predict Hepatic Cirrhosis in CF). Children with pancreatic insufficient CF aged 3-12 years without known cirrhosis, Burkholderia species infection, or short bowel syndrome underwent a screening research ultrasound examination. Participants with a heterogeneous liver ultrasound pattern were matched (by age, Pseudomonas infection status, and center) 1:2 with participants with a normal pattern. Clinical status and laboratory data were obtained annually and research ultrasound examinations biannually. The primary end point was the development of a nodular research ultrasound pattern, a surrogate for advanced CF liver disease. RESULTS There were 722 participants who underwent screening research ultrasound examination, of which 65 were heterogeneous liver ultrasound pattern and 592 normal liver ultrasound pattern. The final cohort included 55 participants with a heterogeneous liver ultrasound pattern and 116 participants with a normal liver ultrasound pattern. All participants with at least 1 follow-up research ultrasound were included. There were no differences in age or sex between groups at entry. Alanine aminotransferase (42 ± 22 U/L vs 32 ± 19 U/L; P = .0033), gamma glutamyl transpeptidase (36 ± 34 U/L vs 15 ± 8 U/L; P < .001), and aspartate aminotransferase to platelet ratio index (0.7 ± 0.5 vs 0.4 ± 0.2; P < .0001) were higher in participants with a heterogeneous liver ultrasound pattern compared with participants with a normal liver ultrasound pattern. Participants with a heterogeneous liver ultrasound pattern had a 9.1-fold increased incidence (95% CI, 2.7-30.8; P = .0004) of nodular pattern vs a normal liver ultrasound pattern (23% in heterogeneous liver ultrasound pattern vs 2.6% in normal liver ultrasound pattern). CONCLUSIONS Research liver ultrasound examinations can identify children with CF at increased risk for developing advanced CF liver disease.
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Affiliation(s)
- Marilyn J Siegel
- Mallinckrodt Institute of Radiology, Washington
University School of Medicine, St Louis, MO
| | - A Jay Freeman
- Division of Pediatric Gastroenterology, Hepatology and
Nutrition, Emory University School of Medicine, Atlanta, GA
| | - Wen Ye
- Department of Biostatistics, University of Michigan
Medical School, Ann Arbor, MI
| | - Joseph J Palermo
- Division of Pediatric Gastroenterology, Hepatology and
Nutrition, Cincinnati Children’s Hospital Medical Center, and Department of
Pediatrics, University of Cincinnati College of Medicine, Cincinnati OH
| | - Jean P Molleston
- Pediatric Gastroenterology, Hepatology and Nutrition,
Riley Hospital for Children, Indiana University School of Medicine, Indianapolis,
IN
| | - Shruti M Paranjape
- Division of Pediatric Pulmonology, John Hopkins School of
Medicine, Baltimore, MD
| | - Janis Stoll
- Division of Gastroenterology and Nutrition, Washington
University School of Medicine, St Louis, MO
| | - Daniel Leung
- Division of Gastroenterology, Hepatology and Nutrition,
Texas Children’s Hospital, Houston TX
| | - Prakash Masand
- Division of Radiology, Texas Children’s Hospital,
Houston TX
| | - Boaz Karmazyn
- Pediatric Radiology, Riley Hospital for Children,
Indianapolis, IN
| | - Roger Harned
- Division of Pediatric Radiology, Children’s
Hospital Colorado and University of Colorado School of Medicine, Aurora, CO
| | - Simon C Ling
- Division of Gastroenterology, Hepatology and Nutrition,
The Hospital for Sick Children, Department of Paediatrics, University of Toronto,
Toronto, Ontario, Canada
| | - Oscar M Navarro
- Department of Medical Imaging, University of Toronto,
Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Ontario,
Canada
| | - Wikrom Karnsakul
- Division of Pediatric Gastroenterology, Hepatology and
Nutrition, John Hopkins School of Medicine, Baltimore, MD
| | - Adina Alazraki
- Department of Radiology, Emory University School of
Medicine and Children’s Healthcare of Atlanta, Egleston, Atlanta, GA
| | - Sarah Jane Schwarzenberg
- Pediatric Gastroenterology, University of Minnesota
Masonic Children’s Hospital, Minneapolis, MN
| | - F Glen Seidel
- Pediatric Radiology, Lucile Packard Children’s
Hospital, Stanford, CA
| | - Alex Towbin
- Department of Radiology, Cincinnati Children’s
Hospital Medical Center and Department of Radiology, University of Cincinnati
College of Medicine Cincinnati OH
| | - Estella M Alonso
- Division of Pediatric Gastroenterology, Hepatology and
Nutrition, Ann & Robert H. Lurie Children’s Hospital, Chicago IL
| | - Jennifer L. Nicholas
- Mallinckrodt Institute of Radiology, Washington
University School of Medicine, St Louis, MO
| | - Karen F Murray
- Division of Gastroenterology and Hepatology, University
of Washington and Seattle Children’s Hospital, Seattle, WA
| | - Randolph K Otto
- Department of Radiology, Seattle Children’s
Hospital, Seattle, WA
| | | | - John C Magee
- Department of Surgery, University of Michigan Medical
School, Ann Arbor, MI
| | - Michael R Narkewicz
- Digestive Health Institute, Children's Hospital Colorado and Section of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO.
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8
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Dutta AK, Boggs K, Khimji AK, Getachew Y, Wang Y, Kresge C, Rockey DC, Feranchak AP. Signaling through the interleukin-4 and interleukin-13 receptor complexes regulates cholangiocyte TMEM16A expression and biliary secretion. Am J Physiol Gastrointest Liver Physiol 2020; 318:G763-G771. [PMID: 32090602 PMCID: PMC7191463 DOI: 10.1152/ajpgi.00219.2019] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
TMEM16A is a Ca2+-activated Cl- channel in the apical membrane of biliary epithelial cells, known as cholangiocytes, which contributes importantly to ductular bile formation. Whereas cholangiocyte TMEM16A activity is regulated by extracellular ATP-binding membrane purinergic receptors, channel expression is regulated by interleukin-4 (IL-4) through an unknown mechanism. Therefore, the aim of the present study was to identify the signaling pathways involved in TMEM16A expression and cholangiocyte secretion. Studies were performed in polarized normal rat cholangiocyte monolayers, human Mz-Cha-1 biliary cells, and cholangiocytes isolated from murine liver tissue. The results demonstrate that all the biliary models expressed the IL-4Rα/IL-13Rα1 receptor complex. Incubation of cholangiocytes with either IL-13 or IL-4 increased the expression of TMEM16A protein, which was associated with an increase in the magnitude of Ca2+-activated Cl- currents in response to ATP in single cells and the short-circuit current response in polarized monolayers. The IL-4- and IL-13-mediated increase in TMEM16A expression was also associated with an increase in STAT6 phosphorylation. Specific inhibition of JAK-3 inhibited the increase in TMEM16A expression and the IL-4-mediated increase in ATP-stimulated currents, whereas inhibition of STAT6 inhibited both IL-4- and IL-13-mediated increases in TMEM16A expression and ATP-stimulated secretion. These studies demonstrate that the cytokines IL-13 and IL-4 regulate the expression and function of biliary TMEM16A channels through a signaling pathway involving STAT6. Identification of this regulatory pathway provides new insight into biliary secretion and suggests new targets to enhance bile formation in the treatment of cholestatic liver disorders.NEW & NOTEWORTHY The Ca2+-activated Cl- channel transmembrane member 16A (TMEM16A) has emerged as an important regulator of biliary secretion and hence, ductular bile formation. The present studies represent the initial description of the regulation of TMEM16A expression in biliary epithelium. Identification of this regulatory pathway involving the IL-4 and IL-13 receptor complex and JAK-3 and STAT-6 signaling provides new insight into biliary secretion and suggests new therapeutic targets to enhance bile formation in the treatment of cholestatic liver disorders.
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Affiliation(s)
- Amal K. Dutta
- 1Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Kristy Boggs
- 4Department of Pediatrics, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Al-karim Khimji
- 2Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Yonas Getachew
- 2Department of Medicine, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Youxue Wang
- 1Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Charles Kresge
- 1Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Don C. Rockey
- 3Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Andrew P. Feranchak
- 4Department of Pediatrics, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
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9
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Abstract
Cystic fibrosis (CF) is a multisystem disease caused by mutations in the CF transmembrane conductance regulator (CFTR) gene. CFTR is expressed in the apical surface of cholangiocytes. Homozygous CFTR gene mutation results in viscous and acidic bile secretions secondary to deficient surface fluid and bicarbonate efflux. Viscous, inspissated bile causes ductular obstruction and hepatotoxicity from retained bile components, leading to fibrosis and ultimately cirrhosis, known as CF liver disease (CFLD). CFLD is the third leading cause of death in CF patients. CFLD manifestations can take many forms. They range from asymptomatic elevation of transaminases to cirrhosis and end-stage liver disease. CFLD is diagnosed after excluding other causes of chronic liver disease. To date, there is no effective therapy to prevent or treat CFLD. Management of CFLD emphasizes on optimizing nutritional status. Ursodeoxycholic acid is the only available treatment that may prevent progression of CFLD at present. All CF patients with CFLD need annual investigations and follow-up for early detection of the disease. Liver transplantation should be considered in patients with decompensated cirrhosis and portal hypertension, with acceptable long-term outcomes. Novel therapies of CFLD are promising. This review article aims to summarize the published literature on CFLD, its pathophysiology, clinical features and complications, and management including new therapeutic options.
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Affiliation(s)
- Siham Al Sinani
- Graduate Medical Education Department, Oman Medical Specialty Board, Muscat, Oman.,Department of Child Health, Sultan Qaboos University Hospital, Muscat, Oman
| | - Sharef Al-Mulaabed
- Department of Pediatrics, Brookdale University Hospital Medical Center, Brooklyn, NY, USA
| | | | - Rabab Sultan
- Department of Child Health, Sultan Qaboos University Hospital, Muscat, Oman
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Young TJ, Li DA, Eshaghian PH. Cystic Fibrosis: an Update on Disease Pathophysiology, Management, and Novel Modalities of Therapy. CURRENT TREATMENT OPTIONS IN ALLERGY 2019. [DOI: 10.1007/s40521-019-00211-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Cirrhosis associated with decreased survival and a 10-year lower median age at death of cystic fibrosis patients in the Netherlands. J Cyst Fibros 2019; 18:385-389. [DOI: 10.1016/j.jcf.2018.11.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 11/10/2018] [Accepted: 11/14/2018] [Indexed: 11/18/2022]
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12
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Vitamin D intake, serum 25-hydroxy vitamin D and pulmonary function in paediatric patients with cystic fibrosis: a longitudinal approach. Br J Nutr 2018; 121:195-201. [DOI: 10.1017/s0007114518003021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
AbstractPancreatic-insufficient children with cystic fibrosis (CF) receive age-group-specific vitamin D supplementation according to international CF nutritional guidelines. The potential advantageous immunomodulatory effect of serum 25-hydroxy vitamin D (25(OH)D) on pulmonary function (PF) is yet to be established and is complicated by CF-related vitamin D malabsorption. We aimed to assess whether current recommendations are optimal for preventing deficiencies and whether higher serum 25(OH)D levels have long-term beneficial effects on PF. We examined the longitudinal relationship between vitamin D intake, serum 25(OH)D and PF in 190 CF children during a 4-year follow-up period. We found a significant relationship between total vitamin D intake and serum 25(OH)D (β = 0·02; 95 % CI 0·01, 0·03; P = 0·000). However, serum 25(OH)D decreased with increasing body weight (β = –0·79; 95 % CI –1·28, –0·29; P = 0·002). Furthermore, we observed a significant relationship between serum 25(OH)D and forced expiratory volume in 1 s (β = 0·056; 95 % CI 0·01, 0·102; P = 0·018) and forced vital capacity (β = 0·045; 95 % CI 0·008, 0·082; P = 0·017). In the present large study sample, vitamin D intake is associated with serum 25(OH)D levels, and adequate serum 25(OH)D levels may contribute to the preservation of PF in children with CF. Furthermore, to maintain adequate levels of serum 25(OH)D, vitamin D supplementation should increase with increasing body weight. Adjustments of the international CF nutritional guidelines, in which vitamin D supplementation increases with increasing weight, should be considered.
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Leung DH, Narkewicz MR. Cystic Fibrosis-related cirrhosis. J Cyst Fibros 2017; 16 Suppl 2:S50-S61. [DOI: 10.1016/j.jcf.2017.07.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 07/01/2017] [Accepted: 07/03/2017] [Indexed: 12/14/2022]
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Klotter V, Gunchick C, Siemers E, Rath T, Hudel H, Naehrlich L, Roderfeld M, Roeb E. Assessment of pathologic increase in liver stiffness enables earlier diagnosis of CFLD: Results from a prospective longitudinal cohort study. PLoS One 2017; 12:e0178784. [PMID: 28575039 PMCID: PMC5456384 DOI: 10.1371/journal.pone.0178784] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 05/18/2017] [Indexed: 12/17/2022] Open
Abstract
About 30% of patients with Cystic Fibrosis (CF) develop CF-associated liver disease (CFLD). Recent studies have shown that transient elastography (TE), as a method to quantify liver stiffness, allows non-invasive diagnosis of CFLD in adults and children with CF. Within this study we aimed to prospectively identify patients at risk for development of CFLD by longitudinal analysis of liver stiffness and fibrosis scores in a 5-year follow-up. 36 pediatric and 16 adult patients with initial liver stiffness below the cut-off value indicative of CFLD (6.3 kPa) were examined by transient elastography for 4-5 years. TE, APRI-, and FIB-4-scores were assessed and compared by Kruskal-Wallis test and receiver operating characteristic (ROC)-analysis. Frequencies were compared by Chi2-test. Among the 36 patients participating in this study, a subgroup of 9 patients developed liver stiffness >6.3 kPa after 4-5 years with an increase of ΔTE >0.38 kPa/a (the group with increasing liver stiffness was labelled TEinc). APRI- and FIB-4 scores confirmed the rationale for grouping. The frequency of CFLD assessed by conventional diagnosis was significantly higher in TEinc-group compared to the control group (TEnorm). None of the adult CF patients matched criteria for TEinc-group. For the first time it was shown that the non-invasive longitudinal assessment of TE allows identification of patients with progression of CFLD in a subgroup of juvenile but not in adult CF patients. Comparing TE to conventional fibrosis-scores underlined the strength of the continuous assessment of liver stiffness for the exact diagnosis of progressive CFLD. The newly described cut-off for pathologic increase of liver stiffness, ΔTEcutoff = 0.38kPa/a, might enable to detect developing CFLD using consequent follow up TE measurements before reaching the level of stiffness indicating established CFLD. Nevertheless, the limited size of the analyzed cohort should encourage a prospective, multi-center, long term follow up study to confirm the suggested cut-off for the rise in liver stiffness.
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Affiliation(s)
- Victoria Klotter
- Department of Internal Medicine, Division of Gastroenterology, Justus-Liebig-University, Giessen, Germany
| | - Caroline Gunchick
- Department of Internal Medicine, Division of Gastroenterology, Justus-Liebig-University, Giessen, Germany
| | - Enno Siemers
- Department of Internal Medicine, Division of Gastroenterology, Justus-Liebig-University, Giessen, Germany
| | - Timo Rath
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Helge Hudel
- Institute for Medical Informatics, Justus-Liebig-University, Giessen, Germany
| | - Lutz Naehrlich
- Department of Pediatrics, Division of Pulmonology, Justus-Liebig-University, Giessen, Germany
| | - Martin Roderfeld
- Department of Internal Medicine, Division of Gastroenterology, Justus-Liebig-University, Giessen, Germany
| | - Elke Roeb
- Department of Internal Medicine, Division of Gastroenterology, Justus-Liebig-University, Giessen, Germany
- * E-mail:
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Jagadisan B, Srivastava A. Child with Jaundice and Pruritus: How to Evaluate? Indian J Pediatr 2016; 83:1311-1320. [PMID: 26932879 DOI: 10.1007/s12098-016-2058-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 02/01/2016] [Indexed: 12/01/2022]
Abstract
Jaundice with pruritus is a manifestation of cholestasis. The defective biliary drainage causes accumulation of substances that are usually excreted in bile, which in turn causes pruritus. The exact nature of the pruritogen is under evaluation. However, lysophosphatidic acid is the current favourite. The causes of cholestasis can be broadly classified as intra or extrahepatic, with intrahepatic disorders being more often associated with pruritus. Cholestatic phase of acute viral hepatitis, progressive familial intrahepatic cholestasis, syndromic and non-syndromic paucity of intralobular bile ductules, drug induced cholestasis and sclerosing cholangitis (SC) are the common causes in children. An algorithmic approach facilitates early etiological diagnosis by careful clinical evaluation combined with investigations including gamma glutamyl transpeptidase, radiological imaging (ultrasonography, magnetic resonance cholangiopancreatography), liver biopsy and genetic analysis. Management is largely supportive and includes nutritional rehabilitation with supplement of fat soluble vitamins and calcium, stepwise therapy of pruritus with drugs (ursodeoxycholic acid, rifampicin, bile acid sequestrants and/or opioid antagonists) and biliary diversion surgery. Complications of advanced liver disease and portal hypertension need to be addressed. Liver transplantation is required in children with refractory pruritus affecting the quality of life or those with end stage liver disease. Relief of biliary obstruction by endoscopy or surgery and treatment of diseases associated with SC like histiocytosis may be rewarding. Long-term follow-up for development of complications of liver disease and hepatocellular/ cholangiocarcinoma is essential. Thus, an early diagnosis and stepwise treatment with an understanding of the pathogenesis of pruritus in cholestatic disorders may decrease morbidity and mortality.
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Affiliation(s)
- Barath Jagadisan
- Department of Pediatrics, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Pondicherry, India
| | - Anshu Srivastava
- Department of Pediatric Gastroenterology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Raebareli Road, Lucknow, 226014, Uttar Pradesh, India.
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16
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Relevance of 3D Cholangiography and Transient Elastography to Assess Cystic Fibrosis-Associated Liver Disease? Can Respir J 2016; 2016:4592702. [PMID: 27445541 PMCID: PMC4939173 DOI: 10.1155/2016/4592702] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 05/25/2016] [Accepted: 06/02/2016] [Indexed: 12/14/2022] Open
Abstract
Background. Cystic fibrosis-associated liver disease (CFLD) is a major cause of death. The objective of our retrospective study was to describe the relevance of magnetic resonance imaging (MRI) and liver stiffness measurement (LSM) for CFLD evaluation. Methods. All cystic fibrosis adult patients evaluated by MRI and LSM were included. MR signs of portal hypertension (PHT), dysmorphia, or cholangitis were collected and LSM expressed in kPa and Metavir. Results. Of 25 patients, 52% had abnormal MRI. Median LSM was 5.7 kPa (3.4–9.9). Three patients had F2 score and one had F3 score. In patients with PHT, LSM was 7.85 kPa (3.7–9.9) compared to 5 (3.4–7.5) in others, p = 0.02. In patients with abnormal liver function tests, 50% had increased LSM (≥F2), whereas 94% with normal tests had normal LSM (p = 0.04). Seven patients had abnormal MRI despite normal ultrasonography. Conclusions. MRI and LSM provide useful information on CFLD and may help to screen patients with PHT.
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17
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Armaghanian N, Brand-Miller JC, Markovic TP, Steinbeck KS. Hypoglycaemia in cystic fibrosis in the absence of diabetes: A systematic review. J Cyst Fibros 2016; 15:274-84. [PMID: 27025865 DOI: 10.1016/j.jcf.2016.02.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 02/17/2016] [Accepted: 02/24/2016] [Indexed: 10/22/2022]
Abstract
BACKGROUND Hypoglycaemia in CF in the absence of diabetes or glucose lowering therapies is a phenomenon that is receiving growing attention in the literature. These episodes are sometimes symptomatic and likely have variable aetiologies. Our first aim was to conduct a systematic review of the literature to determine what is known about hypoglycaemia in CF. Our second aim was to assess evidence based guidelines for management strategies. METHODS A comprehensive search of databases and guideline compiler entities was performed. Inclusion criteria were primary research articles and evidence based guidelines that referred to hypoglycaemia in CF in the absence of insulin treatment or other glucose lowering therapies. RESULTS A total of 11 studies (four manuscripts and seven abstracts) and five evidence-based guidelines met the inclusion criteria. Prevalence rates of hypoglycaemia unrelated to diabetes varied between studies (7-69%). Hypoglycaemia was diagnosed during oral glucose tolerance testing or continuous glucose monitoring (CGM). Associations between hypoglycaemia and clinical parameters of BMI, lung function, liver disease and pancreatic insufficiency were measured in some studies. There was no unifying definition of hypoglycaemia in the absence of diabetes. Only two evidence based guidelines reported possible management strategies. CONCLUSION The systematic review found limited data on this clinical problem and supports the need for high quality methodological studies that are able to describe the experience and the aetiology(ies) of hypoglycaemia in CF.
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Affiliation(s)
- N Armaghanian
- Discipline of Paediatrics and Child Health, Sydney Medical School, University of Sydney, Australia; Academic Department of Adolescent Medicine, The Children's Hospital at Westmead, Australia.
| | - J C Brand-Miller
- School of Molecular Bioscience, University of Sydney, Australia; Boden Institute of Obesity, Nutrition and Exercise, University of Sydney, Australia
| | - T P Markovic
- Boden Institute of Obesity, Nutrition and Exercise, University of Sydney, Australia; Department of Endocrinology, Royal Prince Alfred Hospital, Sydney, Australia
| | - K S Steinbeck
- Discipline of Paediatrics and Child Health, Sydney Medical School, University of Sydney, Australia; Academic Department of Adolescent Medicine, The Children's Hospital at Westmead, Australia; Department of Endocrinology, Royal Prince Alfred Hospital, Sydney, Australia
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18
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Murphy MP, Caraher E. Current and Emerging Therapies for the Treatment of Cystic Fibrosis or Mitigation of Its Symptoms. Drugs R D 2016; 16:1-17. [PMID: 26747453 PMCID: PMC4767716 DOI: 10.1007/s40268-015-0121-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Clinical presentation of the chronic, heritable condition cystic fibrosis (CF) is complex, with a diverse range of symptoms often affecting multiple organs with varying severity. The primary source of morbidity and mortality is due to progressive destruction of the airways attributable to chronic inflammation arising from microbial colonisation. Antimicrobial therapy combined with practises to remove obstructive mucopurulent deposits form the cornerstone of current therapy. However, new treatment options are emerging which offer, for the first time, the opportunity to effect remission from the underlying cause of CF. Here, we discuss these therapies, their mechanisms of action, and their successes and failures in order to illustrate the shift in the nature of how CF will likely be managed into the future.
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Affiliation(s)
- Mark P Murphy
- Centre for Microbial-Host Interactions, Centre of Applied Science for Health, Institute of Technology Tallaght, Dublin 24, Ireland.
| | - Emma Caraher
- Centre for Microbial-Host Interactions, Centre of Applied Science for Health, Institute of Technology Tallaght, Dublin 24, Ireland.
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Leung DH, Ye W, Molleston JP, Weymann A, Ling S, Paranjape SM, Romero R, Schwarzenberg SJ, Palermo J, Alonso EM, Murray KF, Marshall BC, Sherker AH, Siegel MJ, Krishnamurthy R, Harned R, Karmazyn B, Magee JC, Narkewicz MR. Baseline Ultrasound and Clinical Correlates in Children with Cystic Fibrosis. J Pediatr 2015; 167:862-868.e2. [PMID: 26254836 PMCID: PMC4586395 DOI: 10.1016/j.jpeds.2015.06.062] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 05/18/2015] [Accepted: 06/26/2015] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To investigate the relationship between abdominal ultrasound findings and demographic, historical, and clinical features in children with cystic fibrosis (CF). STUDY DESIGN Children age 3-12 years with CF without known cirrhosis, were enrolled in a prospective, multicenter study of ultrasound to predict hepatic fibrosis. Consensus ultrasound patterns were assigned by 3 radiologists as normal, heterogeneous, homogeneous, or cirrhosis. Data were derived from direct collection and US or Toronto CF registries. χ(2) or ANOVA were used to compare variables among ultrasound groups and between normal and abnormal. Logistic regression was used to study risk factors for having abnormal ultrasound. RESULTS Findings in 719 subjects were normal (n = 590, 82.1%), heterogeneous (64, 8.9%), homogeneous (41, 5.7%), and cirrhosis (24, 3.3%). Cirrhosis (P = .0004), homogeneous (P < .0001), and heterogeneous (P = .03) were older than normal. More males were heterogeneous (P = .001). More heterogeneous (15.0%, P = .009) and cirrhosis (25.0%, P = .005) had CF-related diabetes or impaired glucose tolerance vs normal (5.4%). Early infection with Pseudomonas aeruginosa (<2 years old) was associated with a lower risk (OR 0.42, P = .0007) of abnormal. Ursodeoxycholic acid use (OR 3.69, P < .0001) and CF-related diabetes (OR 2.21, P = .019) were associated with increased risk of abnormal. CONCLUSIONS Unsuspected cirrhosis is seen in 3.3% of young patients with CF, heterogeneous in 8.9%. Abnormal ultrasound is associated with CF-related diabetes, and early P aeruginosa is associated with normal ultrasound. Prospective assessment of these risk factors may identify potential interventional targets. TRIAL REGISTRATION ClinicalTrials.gov: NCT01144507.
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Affiliation(s)
- Daniel H Leung
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Baylor College of Medicine/Texas Children's Hospital, Houston, TX.
| | - Wen Ye
- Department of Biostatistics, University of Michigan, Ann Arbor, MI
| | - Jean P Molleston
- Pediatric Gastroenterology, Hepatology and Nutrition, Indiana University School of Medicine Riley Hospital for Children, Indianapolis, IN
| | - Alexander Weymann
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO
| | - Simon Ling
- Division of Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, and Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada
| | - Shruti M Paranjape
- Division of Pediatric Pulmonology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Rene Romero
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Emory University School of Medicine, Atlanta, GA
| | - Sara Jane Schwarzenberg
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, University of Minnesota Masonic Children's Hospital, Minneapolis, MN
| | - Joseph Palermo
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Estella M Alonso
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Ann and Robert Lurie Children's Hospital, Chicago, IL
| | - Karen F Murray
- Division of Gastroenterology and Hepatology, Seattle Children's Hospital and University of Washington, Seattle, WA
| | | | - Averell H Sherker
- Liver Diseases Research Branch, Division of Digestive Diseases and Nutrition, NIDDK, Bethesda, MD
| | - Marilyn J Siegel
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO
| | - Rajesh Krishnamurthy
- EB Singleton Department of Diagnostic Imaging, Texas Children's Hospital, Houston, TX
| | - Roger Harned
- Department of Radiology, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO
| | - Boaz Karmazyn
- Pediatric Radiology, Riley Hospital for Children, Indianapolis, IN
| | - John C Magee
- Department of Surgery, University of Michigan, Ann Arbor, MI
| | - Michael R Narkewicz
- Section of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of Colorado SOM and Children's Hospital Colorado, Aurora, CO.
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20
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Huqi San-Evoked Rat Colonic Anion Secretion through Increasing CFTR Expression. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:301640. [PMID: 26290673 PMCID: PMC4531196 DOI: 10.1155/2015/301640] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 10/06/2014] [Accepted: 10/12/2014] [Indexed: 02/07/2023]
Abstract
Huqi San (HQS) is a Chinese herbal preparation of eight medicinal herbs that promote diuresis, detoxification, blood circulation, and cholestasis. Defects in transporter expression and function can cause cholestasis and jaundice. However, the mechanism of the cholestasis underlying HQS effects, especially on the gastrointestinal tract ion secretion, has not been elucidated. Real-time RT-PCR and Western blotting were used to study the expression and localization of cystic fibrosis transmembrane conductance regulator (CFTR) and α-ENaC in rat alimentary tract, and then the effect of HQS on the ion transport in rat distal colon mucosa was investigated using the short-circuit current (ISC) technique. The results showed that pretreatment with HQS significantly enhanced mRNA transcripts and protein content of CFTR in liver and distal colon but not α-ENaC in alimentary organs. HQS increases ISC and decreases the transepithelial resistance. Pretreatment with epithelial Na+ channel blocker did not affect the ISC responses elicited by HQS, but removal of extracellular Cl− or pretreatment with Cl− channel or Na+-K+-2Cl− cotransporter blocker inhibited HQS-elicited ISC responses. These findings demonstrated that HQS, RA, and RP can stimulate Cl− secretion in the distal colon by increasing the mRNA transcripts and protein content of CFTR in liver and distal colon.
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Abstract
Hepatic involvement is often encountered in gastrointestinal (GI) diseases, in part because of the close anatomic and physiologic relations between the liver and GI tract. Drainage of the mesenteric blood supply to the portal vein permits absorbed and/or translocated nutrients, toxins, bacterial elements, cytokines, and immunocytes to gain hepatic access. Liver problems in digestive disorders may range from nonspecific hepatocellular enzyme elevations to significant pathologic processes that may progress to end-stage liver disease. Hepatobiliary manifestations of primary GI diseases in childhood and adolescence are not uncommon and include several well-described associations, such as sclerosing cholangitis with inflammatory bowel disease. Liver damage may also result from the effects of drugs used to treat GI diseases, for example, the hepatotoxicity of immunomodulatory therapies. This review highlights the important features of the hepatic and biliary abnormalities associated with 3 common pediatric GI conditions: inflammatory bowel disease, celiac disease, and cystic fibrosis.
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Bozic M, Molleston J. Strategies for management of pediatric cystic fibrosis liver disease. Clin Liver Dis (Hoboken) 2013; 2:204-206. [PMID: 30992863 PMCID: PMC6448657 DOI: 10.1002/cld.255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 07/02/2013] [Accepted: 08/17/2013] [Indexed: 02/04/2023] Open
Affiliation(s)
- Molly Bozic
- Department of Pediatric GastroenterologyHepatology and Nutrition, Indiana University School of Medicine Riley Hospital for ChildrenIndianapolisIN.
| | - Jean Molleston
- Department of Pediatric GastroenterologyHepatology and Nutrition, Indiana University School of Medicine Riley Hospital for ChildrenIndianapolisIN.
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Aggarwal S, Fiel MI, Schiano TD. Obliterative portal venopathy: a clinical and histopathological review. Dig Dis Sci 2013; 58:2767-76. [PMID: 23812828 DOI: 10.1007/s10620-013-2736-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 05/29/2013] [Indexed: 12/12/2022]
Abstract
Non-cirrhotic portal hypertension (NCPH) is characterized by the elevation of the portal pressure in the absence of cirrhosis. Obliterative portal venopathy (OPV) as a cause of NCPH is being increasingly diagnosed, especially after recent reports of its occurrence in patients with HIV using didanosine. Patients usually present with episodes of variceal hemorrhage and other features of portal hypertension including jaundice, ascites, encephalopathy and hepatopulmonary syndrome. Hepatic synthetic function is typically well preserved and the laboratory evaluation in OPV patients typically reveals only mild nonspecific hematological abnormalities chiefly related to hypersplenism. Its diagnosis remains a challenge and patients are often mistakenly diagnosed as having cirrhosis. Despite the increasing recognition of OPV, its etiology and pathogenesis are still unclear. A number of etiologies have been proposed including genetic predisposition, recurrent bacterial infections, HIV infection and highly active antiretroviral therapy, an altered immune response, hypercoagulability, and exposure to chemicals and certain medications. Histopathological evaluation remains critical in excluding cirrhosis and other causes of portal hypertension, and is the only way of definitively establishing the diagnosis of OPV. Clinicians should have a high index of suspicion for OPV in patients who present with variceal bleeding and splenomegaly and who do not have other features of cirrhosis. The purpose of this review is to summarize the known etiologies for OPV and its associated clinical aspects and correlations, and to also provide ample histophotomicrographs of OPV to aid in the diagnosis. It will also help raise awareness of this entity amongst pathologists and clinicians alike.
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Affiliation(s)
- Sourabh Aggarwal
- School of Medicine, Western Michigan University, Kalamazoo, MI, USA
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25
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Abstract
The clinical manifestations of cystic fibrosis (CF) result from dysfunction of the cystic fibrosis transmembrane regulator protein (CFTR). The majority of people with CF have a limited life span as a consequence of CFTR dysfunction in the respiratory tract. However, CFTR dysfunction in the gastrointestinal (GI) tract occurs earlier in ontogeny and is present in all patients, regardless of genotype. The same pathophysiologic triad of obstruction, infection, and inflammation that causes disease in the airways also causes disease in the intestines. This article describes the effects of CFTR dysfunction on the intestinal tissues and the intraluminal environment. Mouse models of CF have greatly advanced our understanding of the GI manifestations of CF, which can be directly applied to understanding CF disease in humans.
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Affiliation(s)
- Robert C De Lisle
- Anatomy and Cell Biology, University of Kansas School of Medicine, Kansas City, Kansas 66160
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26
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Parisi GF, Di Dio G, Franzonello C, Gennaro A, Rotolo N, Lionetti E, Leonardi S. Liver disease in cystic fibrosis: an update. HEPATITIS MONTHLY 2013; 13:e11215. [PMID: 24171010 PMCID: PMC3810678 DOI: 10.5812/hepatmon.11215] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 06/16/2013] [Accepted: 08/05/2013] [Indexed: 12/11/2022]
Abstract
CONTEXT Cystic fibrosis (CF) is the most widespread autosomal recessive genetic disorder that limits life expectation amongst the Caucasian population. As the median survival has increased related to early multidisciplinary intervention, other manifestations of CF have emerged especially for the broad spectrum of hepatobiliary involvement. The present study reviews the existing literature on liver disease in cystic fibrosis and describes the key issues for an adequate clinical evaluation and management of patients, with a focus on the pathogenetic, clinical and diagnostic-therapeutic aspects of liver disease in CF. EVIDENCE ACQUISITION A literature search of electronic databases was undertaken for relevant studies published from 1990 about liver disease in cystic fibrosis. The databases searched were: EMBASE, PubMed and Cochrane Library. RESULTS CF is due to mutations in the gene on chromosome 7 that encodes an amino acidic polypeptide named CFTR (cystic fibrosis transmembrane regulator). The hepatic manifestations include particular changes referring to the basic CFTR defect, iatrogenic lesions or consequences of the multisystem disease. Even though hepatobiliary disease is the most common non-pulmonary cause of mortality in CF (the third after pulmonary disease and transplant complications), only about the 33%of CF patients presents clinically significant hepatobiliary disease. CONCLUSIONS Liver disease will have a growing impact on survival and quality of life of cystic fibrosis patients because a longer life expectancy and for this it is important its early recognition and a correct clinical management aimed at delaying the onset of complications. This review could represent an opportunity to encourage researchers to better investigate genotype-phenotype correlation associated with the development of cystic fibrosis liver disease, especially for non-CFTR genetic polymorphisms, and detect predisposed individuals. Therapeutic trials are needed to find strategies of fibrosis prevention and to avoid its progression prior to development its related complications.
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Affiliation(s)
- Giuseppe Fabio Parisi
- Department of Medical and Pediatric Science, Bronchopneumology and Cystic Fibrosis Unit, University of Catania, Catania, Italy
| | - Giovanna Di Dio
- Department of Medical and Pediatric Science, Bronchopneumology and Cystic Fibrosis Unit, University of Catania, Catania, Italy
| | - Chiara Franzonello
- Department of Medical and Pediatric Science, Bronchopneumology and Cystic Fibrosis Unit, University of Catania, Catania, Italy
| | - Alessia Gennaro
- Department of Medical and Pediatric Science, Bronchopneumology and Cystic Fibrosis Unit, University of Catania, Catania, Italy
| | - Novella Rotolo
- Department of Medical and Pediatric Science, Bronchopneumology and Cystic Fibrosis Unit, University of Catania, Catania, Italy
| | - Elena Lionetti
- Department of Medical and Pediatric Science, Bronchopneumology and Cystic Fibrosis Unit, University of Catania, Catania, Italy
| | - Salvatore Leonardi
- Department of Medical and Pediatric Science, Bronchopneumology and Cystic Fibrosis Unit, University of Catania, Catania, Italy
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Harring TR, Nguyen NTT, Liu H, Karpen SJ, Goss JA, O'Mahony CA. Liver transplantation in cystic fibrosis: a report from Baylor College of Medicine and the Texas Children's Hospital. Pediatr Transplant 2013; 17:271-7. [PMID: 23489441 DOI: 10.1111/petr.12057] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/11/2012] [Indexed: 12/01/2022]
Abstract
CF affects one of 2000 Caucasians, and approximately 25% are found to have CFLD for which OLT may be indicated. Timing of transplantation, contraindications, and survival are still widely debated. We report the outcomes of OLT for pediatric patients with CFLD from the largest children's hospital in the United States. Our records since September 1998 were analyzed for all patients undergoing OLT for CFLD. Nine patients were then compared to similar patients in the UNOS/OPTN database (n = 155). Survivals were calculated with the Kaplan-Meier method and compared using the log-rank test. All statistics were performed in SPSS 15.0. We performed OLT on nine pediatric patients with CFLD, with age ranging from nine to 17 yr at the time of transplant. Mean survival was 69.2 months; patient and allograft survivals at one and five yr were 88.9%, with one death at day 21 due to Aspergillus fumigatus sepsis. Two patients underwent concurrent multi-organ transplantation. One patient required double lung transplantation four yr after isolated OLT. Comparison to the UNOS/OPTN database revealed a trend toward improved survival. Patients with CF can achieve favorable outcomes after OLT, as we report excellent survivals for pediatric patients with CFLD.
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Affiliation(s)
- Theresa R Harring
- Michael E. DeBakey Department of Surgery, Baylor College Of Medicine, Houston, TX, USA
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Kitson MT, Kemp WW, Iser DM, Paul E, Wilson JW, Roberts SK. Utility of transient elastography in the non-invasive evaluation of cystic fibrosis liver disease. Liver Int 2013; 33:698-705. [PMID: 23432782 DOI: 10.1111/liv.12113] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 12/11/2012] [Accepted: 12/28/2012] [Indexed: 01/13/2023]
Abstract
BACKGROUND Liver disease frequently complicates cystic fibrosis (CF), with CF liver disease (CFLD) a leading cause of death. Liver biopsy is rarely performed because of the patchy nature of the disease. Transient elastography can reliably stage liver fibrosis via liver stiffness measurement (LSM). AIMS To evaluate LSM as a diagnostic tool in adults with CFLD. METHODS Fifty adult patients with CF were prospectively studied: 25 with CFLD and 25 without CFLD. The presence of CFLD and portal hypertension (PHT) was assessed according to strict established criteria based on serial biochemistry and imaging. All patients underwent LSM; APRI, Hepascore(®) and Forns score were calculated. RESULTS Median LSM was higher in those with CFLD [8.1 kPa (IQR 6.8-9.5) vs. 5.0 kPa (IQR 4.1-5.6); P < 0.001]. On multivariate analysis, LSM was the only variable associated with CFLD (OR 2.74, 95% CI 1.53-4.89; P = 0.001). AUROC for LSM predicting CFLD was 0.87 (95% CI 0.77-0.98) and an LSM ≥ 6.8 kPa predicted CFLD with 76.0% sensitivity and 92.0% specificity. Median LSM was higher in those with PHT [15.7 kPa (IQR 9.2-17.2) vs. 5.4 kPa (IQR 4.3-6.8); P < 0.001]. The AUROC for LSM predicting the presence of PHT was 0.96 (95% CI 0.92-1.00). An LSM cut-off of ≥ 8.9 kPa predicted the presence of PHT with 87.5% sensitivity, 90.5% specificity, 63.6% positive predictive value and 92.9% negative predictive value. CONCLUSIONS LSM is an accurate and reliable non-invasive tool in assessing CFLD and PHT. An LSM ≥ 6.8 kPa is highly suggestive of CFLD and an LSM <8.9 kPa reliably excludes PHT.
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Affiliation(s)
- Matthew T Kitson
- Department of Gastroenterology, Alfred Hospital, Melbourne, Australia
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Gelfond D, Borowitz D. Gastrointestinal complications of cystic fibrosis. Clin Gastroenterol Hepatol 2013; 11:333-42; quiz e30-1. [PMID: 23142604 DOI: 10.1016/j.cgh.2012.11.006] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 10/30/2012] [Accepted: 11/01/2012] [Indexed: 02/07/2023]
Abstract
The cystic fibrosis transmembrane regulator protein (CFTR) is an ion channel in the apical surface of epithelial membranes that regulates other ion channels. Dysfunction of CFTR leads to the clinical entity of CF when mutations in CFTR are inherited in an autosomal recessive fashion. Although airway obstruction, inflammation, and infection are usually the most serious consequences of CFTR dysfunction because they lead to respiratory failure, CFTR dysfunction affects the intestinal tract and the pancreatic and hepatobiliary ducts in a similar fashion, leading to significant morbidity. This review outlines pathophysiology and common gastrointestinal ailments in the CF population along with current medical and surgical management.
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Affiliation(s)
- Daniel Gelfond
- Department of Pediatrics, State University of New York at Buffalo, Buffalo, New York, USA.
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Rath T, Hage L, Kügler M, Menendez Menendez K, Zachoval R, Naehrlich L, Schulz R, Roderfeld M, Roeb E. Serum proteome profiling identifies novel and powerful markers of cystic fibrosis liver disease. PLoS One 2013; 8:e58955. [PMID: 23516586 PMCID: PMC3597583 DOI: 10.1371/journal.pone.0058955] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Accepted: 02/08/2013] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND AND AIMS Cystic Fibrosis associated liver disease (CFLD) develops in approximately 30% of CF patients. However, routine sensitive diagnostic tools for CFLD are lacking. Within this study, we aimed to identify new experimental biomarkers for the detection of CFLD. METHODS 45 CF patients were included in the study and received transient elastography. Differential regulation of 220 different serum proteins was assessed in a subgroup of patients with and without CFLD. Most interesting candidate proteins were further quantified and validated by ELISA in the whole patient cohort. To assess a potential relation of biomarker expression to the degree of hepatic fibrosis, serum biomarkers were further determined in 18 HCV patients where liver histology was available. RESULTS 43 serum proteins differed at least 2-fold in patients with CFLD compared to those without liver disease as identified in proteome profiling. In ELISA quantifications, TIMP-4 and Endoglin were significantly up-regulated in patients with CFLD as diagnosed by clinical guidelines or increased liver stiffness. Pentraxin-3 was significantly decreased in patients with CFLD. Serum TIMP-4 and Endoglin showed highest values in HCV patients with liver cirrhosis compared to those with fibrosis but without cirrhosis. At a cut-off value of 6.3 kPa, transient elastography compassed a very high diagnostic accuracy and specificity for the detection of CFLD. Among the biomarkers, TIMP-4 and Endoglin exhibited a high diagnostic accuracy for CFLD. Diagnostic sensitivities and negative predictive values were increased when elastography and TIMP-4 and Endoglin were combined for the detection of CFLD. CONCLUSIONS Serum TIMP-4 and Endoglin are increased in CFLD and their expression correlates with hepatic staging. Determination of TIMP-4 and Endoglin together with transient elastography can increase the sensitivity for the non-invasive diagnosis of CFLD.
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Affiliation(s)
- Timo Rath
- Justus-Liebig-University Giessen, Department of Internal Medicine, Division of Gastroenterology, Giessen, Germany
| | - Lisa Hage
- Justus-Liebig-University Giessen, Department of Internal Medicine, Division of Gastroenterology, Giessen, Germany
| | - Marion Kügler
- Justus-Liebig-University Giessen, Department of Internal Medicine, Division of Gastroenterology, Giessen, Germany
| | - Katrin Menendez Menendez
- Justus-Liebig-University Giessen, Department of Internal Medicine, Division of Gastroenterology, Giessen, Germany
| | - Reinhart Zachoval
- Ludwig-Maximilians-University Munich, Department of Gastroenterology, Munich, Germany
| | - Lutz Naehrlich
- Justus-Liebig-University Giessen, Department of Pediatrics, Division of Pulmonology, Giessen, Germany
| | - Richard Schulz
- Justus-Liebig-University Giessen, Department of Internal Medicine, Division of Pulmonology, Giessen, Germany
| | - Martin Roderfeld
- Justus-Liebig-University Giessen, Department of Internal Medicine, Division of Gastroenterology, Giessen, Germany
| | - Elke Roeb
- Justus-Liebig-University Giessen, Department of Internal Medicine, Division of Gastroenterology, Giessen, Germany
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Flass T, Narkewicz MR. Cirrhosis and other liver disease in cystic fibrosis. J Cyst Fibros 2013; 12:116-24. [PMID: 23266093 PMCID: PMC3883947 DOI: 10.1016/j.jcf.2012.11.010] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 11/14/2012] [Accepted: 11/15/2012] [Indexed: 12/25/2022]
Affiliation(s)
- Thomas Flass
- Section of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics University of Colorado School of Medicine and The Pediatric Liver Center, Children's Hospital Colorado, Aurora, CO, USA
| | - Michael R Narkewicz
- Section of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics University of Colorado School of Medicine and The Pediatric Liver Center, Children's Hospital Colorado, Aurora, CO, USA.
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Rath T, Menendez KM, Kügler M, Hage L, Wenzel C, Schulz R, Graf J, Nährlich L, Roeb E, Roderfeld M. TIMP-1/-2 and transient elastography allow non invasive diagnosis of cystic fibrosis associated liver disease. Dig Liver Dis 2012; 44:780-7. [PMID: 22652148 DOI: 10.1016/j.dld.2012.04.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Revised: 04/12/2012] [Accepted: 04/15/2012] [Indexed: 01/18/2023]
Abstract
BACKGROUND Cystic fibrosis (CF) associated liver disease develops in approximately 30% of CF patients. However, routine sensitive diagnostic tools are lacking. AIMS We aimed to compare the value of transient elastography and experimental fibrosis markers for the detection of liver disease in CF patients. METHODS 145 CF patients (75 children, 70 adults) were prospectively studied and received transient elastography. CF liver disease was diagnosed according to recent guidelines. Serum concentrations of YKL-40, HA, PIIIP, MMP-9, TIMP-1 and TIMP-2 were determined by ELISA. RESULTS Transient elastography was increased in adults and children with CF hepatopathy compared to those without and exhibited a high diagnostic accuracy for CF liver disease. In adults with portal hypertension, elastography was further enhanced. TIMP-2 was elevated in adults with CF hepatopathy associated portal hypertension and exhibited a high diagnostic accuracy for portal hypertension in adults and for CF hepatopathy in children. TIMP-1 had a high diagnostic accuracy for CF hepatopathy in adults. Diagnostic sensitivities were increased when elastography and respective biomarkers were combined for the detection of CF hepatopathy and portal hypertension. CONCLUSIONS TIMP-1 and TIMP-2 represent powerful biomarkers for CF associated liver disease and portal hypertension. Their determination may confirm and improve the diagnostic accuracy of transient elastography.
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Affiliation(s)
- Timo Rath
- Justus-Liebig-University Giessen, Department of Internal Medicine, Division of Gastroenterology, 35385 Giessen, Germany
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Dowman JK, Watson D, Loganathan S, Gunson BK, Hodson J, Mirza DF, Clarke J, Lloyd C, Honeybourne D, Whitehouse JL, Nash EF, Kelly D, van Mourik I, Newsome PN. Long-term impact of liver transplantation on respiratory function and nutritional status in children and adults with cystic fibrosis. Am J Transplant 2012; 12:954-64. [PMID: 22225648 DOI: 10.1111/j.1600-6143.2011.03904.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Early liver transplant (LT) has been advocated for patients with cystic fibrosis liver disease (CFLD) and evidence of deterioration in nutritional state and respiratory function to prevent further decline. However, the impact of single LT on long-term respiratory function and nutritional status has not been adequately addressed. We performed a retrospective analysis of the outcomes of 40 (21 adult/19 pediatric) patients with CFLD transplanted between 1987 and 2009 with median follow-up of 47.8 months (range 4-180). One and five-year actuarial survival rates were 85%/64% for adult and 90%/85% for pediatric LT cohorts, respectively. Lung function remained stable until 4 years (FEV(1) % predicted; pretransplant 48.4% vs. 45.9%, 4 years posttransplant) but declined by 5 years (42.4%). Up to 4 years posttransplant mean annual decline in FEV(1) % was lower (0.74%; p = 0.04) compared with the predicted 3% annual decline in CF patients with comorbidity including diabetes. Number of courses of intravenous antibiotics was reduced following LT, from 3.9/year pretransplant to 1.1/year, 5 years posttransplant. Body mass index was preserved posttransplant; 18.0 kg/m(2) (range 15-24.3) pretransplant versus 19.6 kg/m(2) (range 16.4-22.7) 5 years posttransplant. In conclusion, LT is an effective treatment for selected patients with cirrhosis due to CFLD, stabilizing aspects of long-term lung function and preserving nutritional status.
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Affiliation(s)
- J K Dowman
- Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, UK.
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Expanding indications for pediatric liver transplantation. APOLLO MEDICINE 2012. [DOI: 10.1016/s0976-0016(12)60127-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Costa PC, Barreto CC, Pereira L, Lobo ML, Costa MA, Lopes AIG. Cystic fibrosis-related liver disease: a single-center experience. Pediatr Rep 2011; 3:e21. [PMID: 22053265 PMCID: PMC3207309 DOI: 10.4081/pr.2011.e21] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2010] [Accepted: 07/04/2011] [Indexed: 01/01/2023] Open
Abstract
Prospective studies concerning liver disease in pediatric cystic fibrosis patients are scarce. The present study aimed to describe the prevalence and clinical expression of cystic fibrosis - related liver disease, in a cohort of 62 pediatric patients. Descriptive study, resulting from the prospective evaluation, between 1994 and 2009, of 62 pediatric patients (age <18 years) with cystic fibrosis. The follow-up protocol included a clinical assessment every 2 months, liver function tests every 6 months and annual liver ultrasonography. The cumulative prevalence of liver disease was 11.2% (7/62 cases). All patients had ΔF508 mutation and pancreatic insufficiency, none had meconium ileus. The liver involvement became clinically evident at a mean age of 8 years (3-15 years), revealed by hepatomegaly or hepatosplenomegaly (3 cases) and/ or abnormalities of liver function tests (3 cases) changes of liver ultrasound (7 cases) with evidence of portal hypertension (2 cases). Four patients were submitted to liver biopsy; biliary fibrosis was documented in one case, focal biliary cirrhosis in 2 cases and multilobular cirrhosis in another case. Within a median 11.6 years follow-up period (all patients under UDCA therapy after liver disease diagnosis), progression of liver disease was observed in 2 patients; one patient developed refractory variceal bleeding and progressive hepatic failure, requiring liver transplant. The results of the present study agree with those of previous pediatric studies, further documenting clinical expression of liver disease in CF patients, which is usually detected in the first decade of life and emphasize the contribution of ultrasound to early diagnosis of liver involvement. Moreover, although advanced liver disease is a relatively rare event, early isolated liver transplantation may have to be considered at this age group.
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Meyer KC, Francois ML, Thomas HK, Radford KL, Hawes DS, Mack TL, Cornwell RD, Maloney JD, De Oliveira NC. Colon cancer in lung transplant recipients with CF: increased risk and results of screening. J Cyst Fibros 2011; 10:366-9. [PMID: 21664882 DOI: 10.1016/j.jcf.2011.05.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Accepted: 05/17/2011] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To determine the incidence of colon cancer in lung transplant recipients with cystic fibrosis (CF) and review screening colonoscopic findings in other recipients with CF. METHODS A retrospective chart review was performed for all patients with CF transplanted at the University of Wisconsin Hospital and Clinics (January 1994 through December 2010). RESULTS Four of 70 transplant recipients with CF developed fatal colon carcinoma following transplantation, and the cancer was advanced in all 4 recipients (age 31, 44, 44, 64) at the time of diagnosis. In contrast, only one of 287 recipients transplanted for non-CF indications developed colon cancer. Of all recipients with CF who did not develop colon cancer, 20 recipients underwent screening colonoscopy at 1 to 12 years following transplantation. Seven (35%) of the screened transplant recipients (ages 36, 38, 40, 41, 43, 49, 51) had colonic polyps in locations ranging from cecum to sigmoid colon and up to 3 cm in diameter. CONCLUSIONS In contrast to non-CF recipients, patients with CF displayed a significant incidence of colon cancer (4 of 70 recipients; 5.7%) with onset ranging from 246 days to 9.3 years post-transplant, which may be due to a combination of their underlying genetic disorder plus intense, sustained immunosuppression following lung transplantation. Colonoscopic screening may identify patients with pre-malignant colonic lesions and prevent progression to colonic malignancy.
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Affiliation(s)
- Keith C Meyer
- Section of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
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Transient elastography and portal hypertension in pediatric patients with cystic fibrosis Transient elastography and cystic fibrosis. J Cyst Fibros 2011; 10:338-42. [PMID: 21550861 DOI: 10.1016/j.jcf.2011.04.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Revised: 04/12/2011] [Accepted: 04/18/2011] [Indexed: 02/07/2023]
Abstract
BACKGROUND Esophageal varices (EV) are a complication of cystic fibrosis-associated liver disease. Esophagogastroduodenoscopy (EGD) is currently used to diagnose varices but is invasive for pediatric patients. The goal of this study was to explore the relationship between transient elastography (FibroScan®) and the presence of EV in patients with liver disease defined by clinical, laboratory, sonographic, and/or endoscopic criteria. METHODS 18 patients with cystic fibrosis underwent EGD and transient elastography. 12 patients had EV. RESULTS Patients with EV had higher FibroScan values than those without varices with median values of 22.4 kPa (14.4-30.4 kPa) vs. 7.9 kPa (4.4-13.7 kPa) (p=0.01). Using a threshold of 12 kPa, four of six patients without EV would not have needed EGD. CONCLUSIONS Elastography should be recommended for all cystic fibrosis patients with liver disease to follow its progression. A prospective study is needed to define an elastography threshold value that predicts the presence of EV.
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Darwish AA, McKiernan P, Chardot C. Paediatric liver transplantation for metabolic disorders. Part 2: Metabolic disorders with liver lesions. Clin Res Hepatol Gastroenterol 2011; 35:271-80. [PMID: 21376696 DOI: 10.1016/j.clinre.2011.01.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Liver based metabolic disorders account for 10 to 15% of the indications for paediatric liver transplantation. In the last three decades, important progress has been made in the understanding of these diseases, and new therapies have emerged. Concomitantly, medical and surgical innovations have lead to improved results of paediatric liver transplantation, patient survival nowadays exceeding 80% 10 year after surgery with close to normal quality of life in most survivors. This review is a practical update on medical therapy, indications and results of liver transplantation, and potential future therapies, for the main liver based metabolic disorders in which paediatric liver transplantation may be considered. Part 1 focuses on metabolic based liver disorders without liver lesions, and part 2 on metabolic liver diseases with liver lesions.
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Affiliation(s)
- Ahmed A Darwish
- University of Geneva Children's hospital, Paediatric Surgery Unit, Geneva, Switzerland
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Kostovski A, Zdraveska N. Coagulopathy as initial manifestation of concomitant celiac disease and cystic fibrosis: a case report. J Med Case Rep 2011; 5:116. [PMID: 21435208 PMCID: PMC3070667 DOI: 10.1186/1752-1947-5-116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Accepted: 03/24/2011] [Indexed: 01/03/2023] Open
Abstract
Introduction Celiac disease and cystic fibrosis have many common manifestations, such as malabsorption, steatorrhea and growth failure, and were for many years recognized as one clinical entity. Since their recognition as two separate diseases, their co-existence in a patient has been described sporadically; around 20 cases have been described in the literature. Taking into consideration the incidences of the two diseases, the chance of them occurring together is one in 2,000,000 in the general population. Case presentation We describe the case of a five-year-old boy of Turkish ethnicity with both celiac disease and cystic fibrosis, who presented initially with a skin hemorrhage. The diagnosis of celiac disease was made with a positive serum anti-tissue transglutaminase antibody test and the presence of HLA-DQ2 heterodimer, and confirmed on histology with small intestinal villous atrophy. A positive sweat test confirmed the diagnosis of associated cystic fibrosis. To the best of our knowledge there has been no previous report of this rare presentation of associated celiac disease and cystic fibrosis. Conclusion The clinical significance of this case is the consideration of malabsorption with both celiac disease and cystic fibrosis in patients who present with unexplained coagulopathy.
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Affiliation(s)
- Aco Kostovski
- University Children's Hospital, Department for Gastroenterology and Hepatology, Skopje, Former Yugoslav Republic of Macedonia.
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Abstract
Chronic liver disease is associated with many pulmonary complications. Several, including hepatopulmonary syndrome, portopulmonary hypertension, and hepatic hydrothorax have been extensively reviewed. However, hepatobiliary manifestations of primary pulmonary diseases have received less attention. This review focuses on hepatobiliary complications of respiratory failure, cystic fibrosis, α-1 antitrypsin deficiency, sarcoidosis, and tuberculosis.
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Affiliation(s)
- Rajan Kochar
- Division of Gastroenterology, Hepatology and Nutrition, The University of Texas Health Science Center at Houston, 6431 Fannin Street, MSB 4.234, Houston, TX 77030, USA
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Transient elastography in patients with cystic fibrosis. Pediatr Radiol 2010; 40:1231-5. [PMID: 20135110 DOI: 10.1007/s00247-009-1531-z] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2009] [Revised: 11/04/2009] [Accepted: 11/28/2009] [Indexed: 01/14/2023]
Abstract
BACKGROUND Hepatic involvement is frequent in patients with cystic fibrosis (CF), with focal biliary cirrhosis being the pathognomonic hepatic manifestation. In around one-quarter of CF patients, it results in CF-associated liver disease (CFLD). This occurs as a relatively early complication with the majority of patients presenting in childhood or their early teens. However, a normal US does not preclude significant liver fibrosis and liver biopsy is an invasive procedure that is hampered by potential sampling errors. Transient elastography (TE) (Fibroscan) is a non-invasive, user-friendly and quick technique that provides an objective and reproducible measure of liver stiffness. This is accomplished with a device using an US probe mounted in the axis of a vibrator. Vibrations are transmitted by the transducer, inducing an electronic shear wave that propagates through the underlying tissue. OBJECTIVES We aimed to prospectively compare TE and transabdominal US scanning in children and adults attending a CF clinic. MATERIALS AND METHODS A total of 134 consecutive patients with documented CF were prospectively studied. In each case, transient elastography measurement was performed immediately after the routine annual US evaluation of the liver. Sonographic appearance of the liver was classified from 1 to 5. Ten validated TE measurements were performed in each patient with the result expressed in kilopascals (kPa). The median value was considered representative of the elastic modulus of the liver. RESULTS Measurements were performed in 59 CF adults, 75 CF children and 31 control children. There was no relationship between age and liver stiffness in either the control group or CF patients. Elasticity values of controls, CF pancreatic sufficient (PS) patients and pancreatic insufficient (PI) CF patients with a US score <3 were comparable and significantly lower than in CF patients with a US score > or = 3 (all PI) (P < 0.002). Median elasticity in CF patients was significantly higher in males (4.7 kPa) than in females (3.9 kPa) (P = 0.0013). CONCLUSION Considering the limitations of US and the low risk-benefit rate of liver biopsy in most CF patients, this preliminary study suggests that TE is an attractive non-invasive way to assess and follow-up liver disease in these patients.
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An MBL2 haplotype and ABCB4 variants modulate the risk of liver disease in cystic fibrosis patients: a multicentre study. Dig Liver Dis 2009; 41:817-22. [PMID: 19467940 DOI: 10.1016/j.dld.2009.03.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2008] [Revised: 01/01/2009] [Accepted: 03/14/2009] [Indexed: 12/11/2022]
Abstract
BACKGROUND Cystic fibrosis is the most common lethal recessive disorder among Caucasians. Over 1500 mutations have been identified in cystic fibrosis transmembrane conductance regulator disease-gene so far. A large variability of the clinical phenotype has been observed both in cystic fibrosis patients bearing the same genotype, and in affected sibpairs. Thus, genes inherited independently from cystic fibrosis transmembrane conductance regulator could modulate the clinical expression of cystic fibrosis. METHODS We analysed some putative modifier genes of liver cystic fibrosis phenotype (serpin 1, hemochromatosis, transferrin receptor 2, ferroportin 1, mannose binding lectin and adenosine triphospate-binding cassette subfamily B member 4) in 108 unrelated cystic fibrosis patients with and without liver involvement. RESULTS HYPD mannose binding lectin haplotype was significantly (p<0.05) more frequent in cystic fibrosis patients with liver disease versus those without liver disease. This haplotype already related to a more severe pulmonary cystic fibrosis phenotype, is associated to a reduced MBL immunological activity. The c.834-66G>T variant of adenosine triphospate-binding cassette subfamily B member 4 gene was significantly (p<0.05) less frequent in cystic fibrosis patients with liver disease as compared to those with no liver disease. CONCLUSIONS The HYPD mannose binding lectin haplotype may predispose a subgroup of cystic fibrosis patients to a more severe liver involvement impairing the local defence mechanisms whereas the c.834-66G>T adenosine triphospate-binding cassette subfamily B member 4 variant may enhance the activity of the protein and thus exert a protective effect toward liver disease.
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Witters P, De Boeck K, Dupont L, Proesmans M, Vermeulen F, Servaes R, Verslype C, Laleman W, Nevens F, Hoffman I, Cassiman D. Non-invasive liver elastography (Fibroscan) for detection of cystic fibrosis-associated liver disease. J Cyst Fibros 2009; 8:392-9. [PMID: 19733131 DOI: 10.1016/j.jcf.2009.08.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2009] [Revised: 08/03/2009] [Accepted: 08/03/2009] [Indexed: 02/07/2023]
Abstract
BACKGROUND Cystic fibrosis-associated liver disease (CFLD) is the second cause of mortality in CF. The prevalence is estimated to be 26-45%, but sensitive diagnostic tools are lacking. We investigated whether non-invasive liver elastography (Fibroscan) could serve as a screening tool. METHODS Fibroscan measurements were performed in 66 CF patients. Age-specific cutoff values were determined in a control population (n=59). The measurements were compared to clinical data, bi-yearly biochemistry and ultrasound. RESULTS Fibroscan was easy to perform in this patient population. There were 14 patients (21%) with abnormal liver stiffness measurements. Liver stiffness was significantly increased in patients with clinical CFLD (11.2 kPa versus 5.1 kPa), biochemical CFLD (7.4 kPa versus 5.4 kPa) or ultrasonographical CFLD (8.2 versus 4.3 kPa) (p<0.02 for all). CONCLUSIONS Fibroscan is an objective measure and is easy to perform in CF patients, even in children and could provide a valuable tool to detect, and quantify CFLD.
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Affiliation(s)
- Peter Witters
- Department of Paediatrics, Katholieke Universiteit Leuven, Belgium.
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Sarles J. Atteinte digestive de la mucoviscidose : Approche physiopathologique. Arch Pediatr 2009; 16:546-7. [DOI: 10.1016/s0929-693x(09)74061-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Fiel MI, Schiano T. Ascites and variceal bleeding occurring in a 20-year-old with cystic fibrosis. Hepatology 2009; 49:1773-4. [PMID: 19402110 DOI: 10.1002/hep.23001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- M Isabel Fiel
- The Lillian and Henry M. Stratton-Hans Popper Department of Pathology, The Mount Sinai Medical Center, New York, NY 10029, USA.
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Repression of CFTR activity in human MMNK-1 cholangiocytes induces sulfotransferase 1E1 expression in co-cultured HepG2 hepatocytes. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2008; 1783:2391-7. [PMID: 18817817 DOI: 10.1016/j.bbamcr.2008.08.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2008] [Revised: 08/22/2008] [Accepted: 08/25/2008] [Indexed: 11/22/2022]
Abstract
Mouse models of cystic fibrosis (CF) indicate that sulfotransferase (SULT) 1E1 is significantly induced in livers of many mice lacking cystic fibrosis transmembrane receptor (CFTR) activity. Increased SULT1E1 activity results in the alteration of estrogen-regulated protein expression in the livers of these mice. In this study, human MMNK-1 cholangiocytes with repressed CFTR function were used to induce SULT1E1 expression in human HepG2 hepatocytes to investigate whether SULT1E1 can be increased in human CF liver. CFTR expression was inhibited in MMNK-1 cholangiocytes using CFTR-siRNA, then the MMNK-1 and HepG2 cells were co-cultured in a membrane-separated Transwell system. Expression of SULT1E1 and selected estrogen-regulated proteins were then assayed in the HepG2 cells. Results demonstrate that inhibition of CFTR expression in MMNK-1 cells results in the induction of SULT1E1 message and activity in HepG2 cells in the Transwell system. The expression of estrogen-regulated proteins including insulin-like growth factor (IGF)-1, glutathione-S-transferase (GST) P1 and carbonic anhydrase (CA) II expression are repressed in the HepG2 cells cultured with the CFTR-siRNA-MMNK-1 cells apparently in response to the increased sulfation of beta-estradiol. Thus, we have shown that co-culture of HepG2 hepatocytes with MMNK-1 cholangiocytes with siRNA repressed CFTR expression results in the selective induction of SULT1E1 in the HepG2 cells. Loss of CFTR function in cholangiocytes may have a paracrine regulatory effect on hepatocytes via the induction of SULT1E1 and the increased sulfation of beta-estradiol. Experiments are presently underway in our laboratory to elucidate the identity of these paracrine regulatory factors.
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Abstract
The aim of this article is to provide essential information for hepatologists, who primarily care for adults, regarding liver-based inborn errors of metabolism with particular reference to those that may be treatable with liver transplantation and to provide adequate references for more in-depth study should one of these disease states be encountered.
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Affiliation(s)
- Keli Hansen
- Division of Transplant Surgery and Division of Gastroenterology, Children's Hospital and Regional Medical Center, Seattle, WA 98105, USA
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Abstract
Liver damage leads to an inflammatory response and to the activation and proliferation of mesenchymal cell populations within the liver which remodel the extracellular matrix as part of an orchestrated wound-healing response. Chronic damage results in a progressive accumulation of scarring proteins (fibrosis) that, with increasing severity, alters tissue structure and function, leading to cirrhosis and liver failure. Efforts to modulate the fibrogenesis process have focused on understanding the biology of the heterogeneous liver fibroblast populations. The fibroblasts are derived from sources within and out with the liver. Fibroblasts expressing alpha-smooth muscle actin (myofibroblasts) may be derived from the transdifferentiation of quiescent hepatic stellate cells. Other fibroblasts emerge from the portal tracts within the liver. At least a proportion of these cells in diseased liver originate from the bone marrow. In addition, fibrogenic fibroblasts may also be generated through liver epithelial (hepatocyte and biliary epithelial cell)-mesenchymal transition. Whatever their origin, it is clear that fibrogenic fibroblast activity is sensitive to (and may be active in) the cytokine and chemokine profiles of liver-resident leucocytes such as macrophages. They may also be a component driving the regeneration of tissue. Understanding the complex intercellular interactions regulating liver fibrogenesis is of increasing importance in view of predicted increases in chronic liver disease and the current paucity of effective therapies.
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Abstract
The aim of this article is to provide essential information for hepatologists, who primarily care for adults, regarding liver-based inborn errors of metabolism with particular reference to those that may be treatable with liver transplantation and to provide adequate references for more in-depth study should one of these disease states be encountered.
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Affiliation(s)
- Keli Hansen
- Children's Hospital and Regional Medical Center, Seattle, WA 98105, USA.
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Affiliation(s)
- Jane C Davies
- Department of Gene Therapy, Imperial College, London.
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