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https://www.readbyqxmd.com/read/28729092/annexin-a2-modulated-proliferation-of-pulmonary-arterial-smooth-muscle-cells-depends-on-caveolae-and-caveolin-1-in-hepatopulmonary-syndrome
#1
Lin Liao, Binwu Zheng, Bin Yi, Chang Liu, Lin Chen, Ziyang Zeng, Jing Gao
We have established that annexin A2 (ANXA2) is an important factor in the experimental hepatopulmonary syndrome (HPS) serum-induced proliferation of pulmonary arterial smooth muscle cells (PASMCs). However, the detailed mechanism remains unclear. ANXA2 translocated to the caveolin-enriched microdomains (caveolae) in PASMCs upon HPS serum stimulation. The disruption of caveolae by Methyl-β-cyclodextrin (MβCD) alleviated the caveolae recruitment of ANXA2 and the ANXA2-mediated activation of ERK1/2 and NF-κB, so that ANXA2-modulated PASMC proliferation was suppressed...
July 17, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28705726/dual-organ-beneficial-effects-of-metformin-in-cirrhotic-rats-with-hepatopulmonary-syndrome
#2
EDITORIAL
Chih-Wei Liu, Ying-Ying Yang
No abstract text is available yet for this article.
July 10, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28676445/metformin-reduces-intrahepatic-fibrosis-and-intrapulmonary-shunts-in-biliary-cirrhotic-rats
#3
Mu-Tzu Ko, Hui-Chun Huang, Wen-Shin Lee, Chiao-Lin Chuang, I-Fang Hsin, Shao-Jung Hsu, Fa-Yauh Lee, Ching-Chih Chang, Shou-Dong Lee
BACKGROUND: Liver fibrosis causes portal hypertension which dilates collateral vasculature and enhances extra-hepatic angiogenesis including intrapulmonary shunts, which subsequently complicates with hepatopulmonary syndrome. Metformin is an anti-diabetic agent which possesses anti-inflammation and anti-angiogenesis properties. This study evaluated the effect of metformin treatment on liver and lung in a non-diabetic rat model with biliary cirrhosis induced via common bile duct ligation (CBDL)...
July 1, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28642034/cyclooxygenase-2-promotes-pulmonary-intravascular-macrophage-accumulation-by-exacerbating-bmp-signaling-in-rat-experimental-hepatopulmonary-syndrome
#4
Chang Liu, Jing Gao, Bing Chen, Lin Chen, Karine Belguise, Weifeng Yu, Kaizhi Lu, Xiaobo Wang, Bin Yi
BACKGROUND AND AIMS: One central factor in hepatopulmonary syndrome (HPS) pathogenesis is intravascular accumulation of activated macrophages in small pulmonary arteries. However, molecular mechanism underlying the macrophage accumulation in HPS is unknown. In this study, we aimed to explore whether elevated COX-2 induces the Bone morphogenic protein-2 (BMP-2)/Crossveinless-2 (CV-2) imbalance and then activation of BMP signaling pathway promotes the macrophage accumulation in Common Bile Duct Ligation (CBDL) rat lung...
June 19, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28641354/-acute-liver-failure-acute-on-chronic-liver-failure-hepatorenal-syndrome-hepatopulmonary-syndrome-and-portopulmonary-hypertension-artificial-liver-support-on-the-icu
#5
Uwe Lodes, David Jacob, Frank Meyer
Background Acute hepatic dysfunction in the form of acute liver failure (ALF) or acute-on-chronic liver failure (ACLF) is a disease with a high risk of mortality and requires interdisciplinary intensive care. Aim This article explains the nomenclature, pathophysiology, prognosis and possible treatment options of ALF and ACLF, including the possibilities of extracorporeal liver support therapy at the point of liver transplantation (LTx). Method Narrative review with a selective literature review and representative case studies...
June 2017: Zentralblatt Für Chirurgie
https://www.readbyqxmd.com/read/28632747/selective-cyclooxygenase-inhibition-by-sc-560-improves-hepatopulmonary-syndrome-in-cirrhotic-rats
#6
Ching-Chih Chang, Wen-Shin Lee, Hsian-Guey Hsieh, Chiao-Lin Chuang, Hui-Chun Huang, Fa-Yauh Lee, Shou-Dong Lee
OBJECTIVE: Hepatopulmonary syndrome (HPS) is characterized by hypoxia in patients with chronic liver disease. The mechanism of HPS includes pulmonary vasodilatation, inflammation, and angiogenesis. Prostaglandins synthesized by cyclooxygenases (COX) participate in vascular responsiveness, inflammation and angiogenesis, which can be modulated by COX inhibitors. We therefore evaluated the impact of COX inhibition in rats with common bile duct ligation (CBDL)-induced liver cirrhosis and HPS...
2017: PloS One
https://www.readbyqxmd.com/read/28612753/do-late-bubbles-correspond-to-early-hepatopulmonary-syndrome
#7
Hilary M DuBrock, Michael J Krowka
No abstract text is available yet for this article.
August 1, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28611257/isolated-intrapulmonary-vascular-dilatations-and-the-risk-of-developing-hepatopulmonary-syndrome-in-liver-transplant-candidates
#8
Manuel Mendizabal, David Goldberg, Federico Piñero, Diego Arufe, María José de la Fuente, Pablo Testa, Matías Coronel, Sergio Baratta, Luis Podestá, Michael Fallon, Marcelo Silva
BACKGROUND: The natural history of intrapulmonary vascular dilations (IPVD) and their impact on patient outcomes in the setting of portal hypertension has only been described in small series. AIMS: To assess the development of hepatopulmonary síndrome (HPS) in patients with isolated IPVD and to evaluate outcomes of IPVD and HPS among patients evaluated for liver transplantation (LT). MATERIAL AND METHODS: Data from a prospective cohort of patients evaluated for LT with standardized screening for HPS were analyzed...
August 1, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28604464/liver-transplantation-in-a-patient-with-antiphospholipid-syndrome-a-case-report
#9
Rachel C Steckelberg, Zarah D Antongiorgi, Randolph H Steadman
Antiphospholipid syndrome (APS) is an acquired thrombophilic disorder characterized by autoantibodies to cell membrane phospholipids. While altered coagulation can complicate end-stage liver disease, there are few reports describing the perioperative management for liver transplantation in recipients with a preexisting hypercoagulable disorder, such as APS. We present a patient with a history of APS, Budd-Chiari syndrome with cirrhosis, hepatopulmonary syndrome, and heparin-induced thrombocytopenia who underwent liver transplantation complicated by hepatic artery thrombosis...
June 8, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28591307/schistosomiasis-and-hepatopulmonary-syndrome-the-role-of-concomitant-liver-cirrhosis
#10
Liana Gonçalves-Macedo, Edmundo Pessoa Lopes, Ana Lucia Coutinho Domingues, Brivaldo Markman, Vitor Gomes Mota, Carlos Feitosa Luna
BACKGROUND: Hepatopulmonary syndrome (HPS) is defined as an oxygenation defect induced by intrapulmonary vasodilation in patients with liver disease or portal hypertension. It is investigated in patients with liver cirrhosis and less frequently in those with portal hypertension without liver cirrhosis, as may occur in hepatosplenic schistosomiasis (HSS). OBJECTIVES: To investigate the prevalence of HPS in patients with HSS, and to determine whether the occurrence of HPS is influenced by concomitant cirrhosis...
July 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28589869/-hepatopulmonary-syndrome-a-consideration-in-patients-with-liver-disease-accompanied-by-dyspnoea-and-hypoxaemia
#11
P V van Hirtum, G P Bootsma, R A de Man, C Th B M van Deursen, P I Bonta, M D de Kruif
BACKGROUND: Hepatopulmonary syndrome is a severe complication of liver disease, with greatly increased mortality. The syndrome is characterized by increased blood-flow, intrapulmonary vasodilatation and angiogenesis, leading to effects including the formation of shunts. This leads to a decrease in arterial oxygen pressure. Liver transplantation is the only effective treatment. CASE DESCRIPTION: A 74-year-old woman with cirrhosis of the liver attended the pulmonary outpatients' clinic with progressive dyspnoea, which worsened if she sat upright from a lying position (platypnoea)...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28556380/waitlist-outcomes-for-patients-relisted-following-failed-donation-after-cardiac-death-liver-transplant-implications-for-awarding-meld-exception-scores
#12
Kristopher P Croome, David D Lee, Justin H Nguyen, Andrew P Keaveny, C Burcin Taner
Understanding of outcomes for patients re-listed for ischemic cholangiopathy (IC) following a donation after cardiac death (DCD) liver transplant (LT) will help standardization of MELD exception scheme for re-transplantation. Early relisting (E-RL) for DCD graft failure due to PNF or HAT was defined as re-listing ≤ 14 days after DCD-LT, late relisting (L-RL) due to biliary complications was defined as re-listing 14 days- 3 years after DCD-LT. Of 3908 DCD-LT performed nationally between 2002-2016, 540 (13...
May 29, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28543822/good-for-the-lung-but-bad-for-the-liver-garlic-induced-hepatotoxicity-following-liver-transplantation
#13
S A Shaikh, S Tischer, E K Choi, R J Fontana
WHAT IS KNOWN AND OBJECTIVE: Limited data exist surrounding the metabolism and safety of garlic supplements. CASE DESCRIPTION: A patient with a history of hepatopulmonary syndrome (HPS) and orthotopic liver transplantation was admitted to our surgery transplant service with severe hypoxaemia. The patient was started on high-dose Garlicin Cardio(®) (Allium sativum) for HPS and soon after had elevated liver function tests. Garlicin Cardio(®) was discontinued and liver enzymes normalized...
May 25, 2017: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/28494714/is-the-hepatic-factor-a-mirna-that-maintains-the-integrity-of-pulmonary-microvasculature-by-inhibiting-the-vascular-endothelial-growth-factor
#14
Joseph John Vettukattil
The "hepatic factor," a molecule or group of molecules present in the hepatic venous blood, essential for the prevention of the development of pulmonary arteriovenous malformations (PAVMs) and right-to-left shunting has been a conceptual enigma in the understanding of many related conditions. Patients with various forms of liver diseases including acute hepatic failure, and others with normal hepatic function like hereditary hemorrhagic telangiectasia (HHT), inflammatory and parasitic disorders, cardiogenic hepatopulmonary syndrome (cHPS) and skin disorders like Dyskeratosis congenita are all known to cause PAVMs...
May 9, 2017: Current Cardiology Reviews
https://www.readbyqxmd.com/read/28489830/-clinical-and-laboratory-characteristics-of-patients-with-pulmonary-hypertension-and-pulmonary-vascular-complications-hospitalized-at-the-instituto-nacional-de-salud-del-ni%C3%A3-o
#15
Alexis Jose Ormeño Julca, Carlos Melchor Alvarez Murillo, Pedro Miguel Amoretti Alvino, Angel Aladino Florian Florian, Rosa Aurora Castro Johanson, Maria Danisa Celi Perez, Olga Rocío Huamán Prado
The hepatopulmonary syndrome (HPS) and portopulmonary hypertension (PPHN) are distinct pulmonary vascular complications of portal hypertension (PHT) and are associated with increased morbidity and mortality. OBJECTIVES: To describe the clinical and laboratory characteristics of patients with pulmonary hypertension and pulmonary vascular complications hospitalized at the Instituto Nacional de Salud del Niño. MATERIALS AND METHODS: We included patients with HTP hospitalized from January 2012 to June 2013 and that during its evolution progressed with SHP or HTPP...
January 2017: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
https://www.readbyqxmd.com/read/28480722/hepatopulmonary-syndrome-with-large-pulmonary-arteriovenous-malformations-ct-findings-with-emphasis-on-its-association-with-a-mosaic-pattern-of-the-lung-parenchyma
#16
Luis Gorospe Sarasúa, Andreína Olavarría-Delgado, Frank Eric Farfán-Leal, Josefa Pérez-Templado Ladrón de Guevara
We present a case of a 54-year-old patient with cirrhosis, progressive dyspnea, and platypnea. Thoracic computed tomography (CT) showed multiple pulmonary arteriovenous malformations (PAVM), confirming the diagnosis of hepatopulmonary syndrome (HPS). Besides precisely identifying the number and location of PAVM, CT also demonstrated a striking mosaic pattern of the lung parenchyma, characterized by the presence of alternating geographic areas of low attenuation (showing pulmonary vessels with a decreased diameter) with regions of relatively increased attenuation (showing pulmonary vessels with a normal diameter)...
May 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28435094/diammonium-glycyrrhizinate-alleviates-hepatopulmonary-syndrome-via-restoring-superoxide-dismutase-3-activity-in-rats
#17
Xin Zhao, Jinyu Liu, Shijun Yang, Chen Chen, He Yin, Ting Li, Qiuting Wang, Xiaoya Li, Yulin Lin, Dayong Cai
Hepatopulmonary syndrome (HPS) has a fatal hypoxemia from pulmonary shunts. Superoxide dismutase 3 (SOD3) deficiency involves in this pathogenesis. The purpose of this study was to investigate the underlying mechanisms of diammonium glycyrrhizinate (DG) on HPS via SOD3. Carbon tetrachloride induced HPS rats were treated with captopril or DG for 56 days. Blood gas, pulmonary artery pressures, and histological changes were measured. Molecule dynamics of inducible (iNOS), endothelial (eNOS), neuronal nitric oxide synthase (nNOS) and SOD3 were assessed by immunohistochemistry, quantitative RT-PCR and western blot...
July 15, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28414743/the-et-1-mediated-carbonylation-and-degradation-of-anxa1-induce-inflammatory-phenotype-and-proliferation-of-pulmonary-artery-smooth-muscle-cells-in-hps
#18
Jing He, Bin Yi, Yang Chen, Qing Huang, Huan Wang, Kaizhi Lu, Weiling Fu
Hepatopulmonary syndrome (HPS) is a serious complication of advanced liver disease, which markedly increases mortality. Pulmonary vascular remodelling (PVR) induced by circulating mediators plays an important role in the pathogenesis of HPS, while the underlying mechanism remains undefined. In the present study, we reported that endothelin-1 (ET-1) is up-regulated and annexin A1(ANXA1) is down-regulated in HPS rat, and ET-1 decreases the ANXA1 expression in a dose-dependent manner in rat pulmonary arterial smooth muscle cells (PASMCs)...
2017: PloS One
https://www.readbyqxmd.com/read/28302500/development-and-evaluation-of-an-online-resource-for-hepatopulmonary-syndrome-patients-and-caregivers-www-hpscare-com
#19
Justina Marianayagam, Katherine Griffin, Jenna Sykes, Samir Gupta
No abstract text is available yet for this article.
March 14, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28301945/the-utility-of-the-macro-aggregated-albumin-lung-perfusion-scan-in-the-diagnosis-and-prognosis-of-hepatopulmonary-syndrome-in-cirrhotic-patients-candidates-for-liver-transplantation
#20
Israel Grilo, Juan Manuel Pascasio, Juan Luis Tirado, Francisco-Jesús López-Pardo, Francisco Ortega-Ruiz, José Manuel Sousa, María José Rodríguez-Puras, María Teresa Ferrer, Miguel Ángel Gómez-Bravo, Antonio Grilo Reina
BACKGROUND: The macro-aggregated albumin lung perfusion scan (99mTc-MAA) is a diagnostic method for hepatopulmonary syndrome (HPS). GOAL: To determine the sensitivity of 99mTc-MAA in diagnosing HPS, to establish the utility of 99mTc-MAA in determining the influence of HPS on hypoxemia in patients with concomitant pulmonary disease and to determine the correlation between 99mTc-MAA values and other respiratory parameters. METHODS: Data from 115 cirrhotic patients who were eligible for liver transplantation (LT) were prospectively analyzed...
May 2017: Revista Española de Enfermedades Digestivas
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