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Albaiz FA, Semenchuk J, Ma X, Lightfoot D, Gonska T, Tullis E, Stephenson AL. Clinical outcomes after liver transplant in people with cystic fibrosis: A systematic review and meta-analysis. J Cyst Fibros 2024:S1569-1993(24)00781-1. [PMID: 38942722 DOI: 10.1016/j.jcf.2024.06.012] [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: 03/05/2024] [Revised: 06/21/2024] [Accepted: 06/22/2024] [Indexed: 06/30/2024]
Abstract
BACKGROUND Data on the impact of liver transplantation (LT) in cystic fibrosis (CF) on lung function and exacerbations are limited. The objective of this study was to summarize the literature on lung function, nutritional status, survival, and complications following LT in people with CF. METHODS Three databases were searched until September 2023, to identify the impact of LT in CF. Lung transplant prior to LT and simultaneous liver-lung transplant were excluded. Pooled hazard ratios were calculated using random-effects models. RESULTS Thirty studies were included in this review, with 3 and 9 studies included in meta-analyses for nutritional status and lung function, respectively. Eighty-three percent of the studies used data that was more than a decade old. There was a significant increase in percent-predicted forced expiratory volume with mean change of 7.16 % (2.13, 12.19; p = 0.005) one year post-LT. Pulmonary exacerbations decreased in the short-term, however there was no significant change in body mass index (BMI). One-year survival post-LT ranged between 75 and 100 %, while five-year survival was lower at 64-89 %. CONCLUSION Existing data suggest that LT improves lung function in the short term and does not increase the likelihood of pulmonary exacerbations, despite ongoing immunosuppression in the setting of chronic lung infection.
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Affiliation(s)
- Faisal A Albaiz
- Division of Respirology, St. Michael's Hospital, University of Toronto, Ontario, Canada; Organ Transplant Centre of Excellence, Lung Health Centre, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Julie Semenchuk
- Division of Respirology, St. Michael's Hospital, University of Toronto, Ontario, Canada
| | - Xiayi Ma
- Division of Respirology, St. Michael's Hospital, University of Toronto, Ontario, Canada
| | - David Lightfoot
- St Michael's Health Sciences Library, St Michael's Hospital, Toronto, Ontario, Canada
| | - Tanja Gonska
- The Hospital for Sick Children, Division of Gastroenterology, Toronto, Ontario, Canada
| | - Elizabeth Tullis
- Division of Respirology, St. Michael's Hospital, University of Toronto, Ontario, Canada
| | - Anne L Stephenson
- Division of Respirology, St. Michael's Hospital, University of Toronto, Ontario, Canada.
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Chooklin S, Chuklin S, Posivnych M, Krystopchuk S. Pathophysiological basis of hepatopulmonary syndrome. Gastroenterology 2024; 58:73-81. [DOI: 10.22141/2308-2097.58.1.2024.590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Circulatory changes with increased blood flow and vasodilatation/vasoconstriction imbalance are an integral consequence of liver cirrhosis and portal hypertension and can affect the pulmonary circulation with the development of vascular disorders, with hepatopulmonary syndrome (HPS) being the most common. HPS is a serious pulmonary complication of progressive liver disease, resulting in a poor clinical prognosis. Vascular tone decrease, monocytic infiltration of pulmonary vessels, formation of intrapulmonary arteriovenous shunts, dysfunction of alveolar type II cells, destruction of the endothelial glycocalyx are important in the pathogenesis of HPS. Abnormalities of pulmonary capillaries lead to hypoxemia caused by a violation of the ventilation/perfusion ratio, diffusion disorders, and the development of arteriovenous anastomoses. Infiltration of the pulmonary vessels by monocytes is one of the key factors of HPS. This migration is facilitated by the intestinal microbiota translocation into the portal bloodstream with increased expression of proinflammatory cytokines (tumor necrosis factor α, interleukins 1, 6), leading to the activation of monocytes. Monocytes located in the pulmonary circulation promote the vasodilation through the activation of inducible nitric oxide (NO) synthase and thus NO production. This is also associated with endothelial dysfunction due to a decreased hepatic secretion of bone morphogenetic protein 9 and increased endothelin 1, endothelial overexpression of endothelin B receptors, and increased endothelial NO production. Proangiogenic factors such as vascular endothelial growth factor, platelet-derived growth factor, and placental growth factor play an important role in the proliferation of pulmonary capillaries. Circulation of tumor necrosis factor α, bile acids and monocyte infiltration in the pulmonary circulation lead to increased apoptosis of alveolar type II cells and decreased surfactant synthesis. Chronic inflammation in HPS disrupts the continuity of the endothelial glycocalyx layer. This article provides an overview of the current knowledge on the pathogenesis of HPS, summarizes many features of the disease based on the literature research in MEDLINE database on the PubMed platform.
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Georgakopoulou VE, Makrodimitri S, Gkoufa A, Apostolidi E, Provatas S, Papalexis P, Spandidos DA, Lempesis IG, Gamaletsou MN, Sipsas NV. Lung function at three months after hospitalization due to COVID‑19 pneumonia: Comparison of alpha, delta and omicron variant predominance periods. Exp Ther Med 2024; 27:83. [PMID: 38274344 PMCID: PMC10809351 DOI: 10.3892/etm.2024.12372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 12/22/2023] [Indexed: 01/27/2024] Open
Abstract
The coronavirus disease (COVID-19) pandemic has already affected millions of individuals, with increasing numbers of survivors. These data suggest that the pulmonary sequelae of the infection may have an effect on a wide range of individuals. The aim of the present study was to evaluate pulmonary function in patients hospitalized due to COVID-19 three months after hospital discharge. A total of 116 patients, 34 females and 82 males, with a mean age of 57.77±11.45 years, who were hospitalized due to COVID-19, underwent pulmonary function testing three months after their hospital discharge. Of these, 83 (71.6%) patients were hospitalized in the period of alpha variant predominance, 16 (13.8%) in the period of delta variant predominance and 17 (14.6%) in the omicron variant predominance period. The mean value of diffusion capacity for carbon monoxide (DLCO)% predicted (pred) was statistically higher in patients affected by the omicron variant (P=0.028). Abnormal values (<80% pred) of DLCO and total lung capacity (TLC) were observed in 28.4 and 20.7% of the patients, respectively. Active smoking was an independent predictor of abnormal values of forced expiratory volume in 1 sec % pred and TLC% pred [P=0.038; odds ratio (OR): 8.574, confidence interval (CI) 1.124-65.424 and P=0.004, OR: 14.733, CI 2.323-93.429, respectively], age was an independent predictor of abnormal values of forced vital capacity % pred and DLCO% pred (P=0.027, OR: 1.124, CI 1.014-1.246 and P=0.011, OR:1.054, CI 1.012-1.098, respectively); and female sex was an independent predictor of abnormal values of DLCO% pred (P=0.009, OR: 1.124, CI 1.014-1.246). Α significant percentage of hospitalized patients due to COVID-19 pneumonia will develop abnormal pulmonary function, regardless of the SARS-CoV-2 variant.
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Affiliation(s)
- Vasiliki Epameinondas Georgakopoulou
- Department of Infectious Diseases and COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Department of Pathophysiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Sotiria Makrodimitri
- Department of Infectious Diseases and COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Aikaterini Gkoufa
- Department of Infectious Diseases and COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Eirini Apostolidi
- Department of Pathophysiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Sotirios Provatas
- ENT Department, Laiko General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Petros Papalexis
- Unit of Endocrinology, First Department of Propedeutic and Internal Medicine, Laiko General Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Department of Biomedical Sciences, University of West Attica, 12243 Athens, Greece
| | - Demetrios A. Spandidos
- Laboratory of Clinical Virology, Medical School, University of Crete, 71003 Heraklion, Greece
| | - Ioannis G. Lempesis
- Department of Pathophysiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Maria N. Gamaletsou
- Department of Pathophysiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Nikolaos V. Sipsas
- Department of Infectious Diseases and COVID-19 Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Department of Pathophysiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
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