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NCT07280390
Cirrhosis and portal hypertension are associated with an hyperdynamic circulation and hepatic inflammation, leading to complications like ascites, variceal bleeding, acute kidney injury, and higher infection risk. Microplastics (MPs) are a global plastic pollution issue, and studies have found plastic MPs or nanoparticles (NPs) contaminating human, animal and environmental ecosystems.It has been noted that the accumulation of MPs increases with a reduction in size of the plastic particle. MPs are categorized into primary particles such as manufactured plastics including pellets and cosmetic microbeads and secondary particles which originate from mechanical and ultraviolet disruption of large plastic particles. MPs can be ingested via food or beverages, especially plastic packaged comestibles or inhaled as environmental pollutants. Contamination of medications such as antibiotics, intravenous fluids, albumin and medical devices is another source of exposure to microplastics in patients with chronic liver disease (CLD)In particular exposure to endoscopic interventions, liver biopsy, and invasive procedures such as paracentesis and interventional radiology procedures can lead to plastic exposure and deposition of MPs in the liver and other tissues in patients with cirrhosis. It may be hypothesized that these may contribute to hepatic inflammation and progression of cirrhosis and portal hypertension. Globally, there is new research on the influence of MPs on the environment, plant and animal ecosystems and human health. Polystyrene (PS) microspheres that concentrate in the liver, intestine and the kidneys of mammals disrupt lipid and energy metabolism, impair mucus secretion, and alter the microbiome. Therefore, studies are required to assess how and to what extent, MPs impact human health, and affect chronic diseases like cirrhosis and reduce longevity. The study investigators will assess the presence of MPs in the liver, kidneys and intestine of patients with liver cirrhosis and compare it with those without underlying liver disease and determine the impact on portal hypertension and fibrosis, and cardiovascular and metabolic function.
NCT07358663
This study is a single-center, prospective cohort study based on real-world data. Patients with portal hypertension and esophagogastric varices were enrolled and divided into an endoscopic treatment group and a non-endoscopic treatment group (including patients receiving medical therapy, interventional procedures, or surgical treatment) according to whether they underwent endoscopic intervention. Baseline data, serum metabolites, CT imaging and endoscopic images, liver biopsy pathology, and other multi-omics data were integrated for both groups. Patients were followed up to compare adverse events after variceal treatment, including rebleeding and its causes, hepatic encephalopathy, ascites, subsequent treatments (such as regular endoscopic therapy, NSSB, and TIPS), and survival outcomes. Clinical characteristics of portal hypertension attributed to different etiologies, including hepatitis B, autoimmune liver disease, schistosomiasis, hematological disorders, and chemotherapy-induced liver injury, were compared. The efficacy and safety of endoscopic and interventional treatments for esophagogastric varices were evaluated. Factors influencing rebleeding rates among different treatment groups were analyzed, and reasons for inclusion in different groups were discussed.
NCT02417740
Background: \- Noncirrhotic Portal Hypertension (NCPH) is caused by liver diseases that increase pressure in the blood vessels of the liver. It seems to start slowly and not have many warning signs. Many people may not even know that they have a liver disease. There are no specific treatments for NCPH. Objectives: \- To learn more about how NCPH develops over time. Eligibility: \- People age 12 and older who have NCPH or are at risk for getting it. In the past year, they cannot have had other types of liver disease that typically result in cirrhosis, liver cancer, or active substance abuse. Design: * Participants will have 2 screening visits. * Visit 1: to see if they have or may develop NCPH. * Medical history * Physical exam * Urine and stool studies * Abdominal ultrasound * Fibroscan. Sound waves measure liver stiffness. \<TAB\>- Visit 2: * Blood tests * Abdominal MRI * Echocardiogram * Questionnaire * Liver blood vessel pressure (hepatic venous portal gradient (HVPG)) measurement. This is done with a small tube inserted in a neck vein. * They may have a liver biopsy. * All participants will visit the clinic every 6 months for a history, physical exam, and blood tests. They will also repeat some of the screening tests yearly. * Participants with NCPH will also have: * Upper endoscopy test. A tube inserted in the mouth goes through the esophagus and stomach. * At least every 2 years: Esophagogastroduodenoscopy. * At least every 4 years: testing including HVPG measurements and liver biopsy. * Participants without NCPH will also have: * Liver biopsy and HVPG measurements to see if they have NCPH. * Every 2 years: abdominal MRI and stool studies. * The study will last indefinitely.
NCT07439939
Portal vein thrombosis is defined as non-tumoural obstruction of the portal vein or one of its branches. Its incidence is 0.7 to 2.7 per 100,000 patient-years in the general population, and 4.6 per 100 patient-years in patients with cirrhosis. Histological modificaitions fo the portal vein wall and haemostatic changes have been described in cirrhotic patients. The contribution of these changes, both systemic and local, to the development of portal vein thrombosis is debated. One of the hypotheses put forward on the genesis of portal vein thrombosis is as follows: certain bacterial translocations from the digestive tract, promoted by portal hypertension, contribute to endothelial activation resulting in the release of von Willebrand factor and factor VIII, as well as platelet activation and the coagulation cascade, which is dysregulated by cirrhosis and underlying changes in haemostatic balance. Inflammatory phenomena and NETosis may also be involved. Studies suggest that cirrhotic patients have lesions of the glycocalyx located in the portal area, which may be involved in the development of portal vein thrombosis. Patients with cirrhosis may benefit from the placement of a transjugular intrahepatic portosystemic shunt (TIPS). During the TIPS placement procedure, blood is drawn from the internal jugular vein and the portal vein, allowing for parallel biological analyses. The assumption of this study is that haemostasis and inflammation are disrupted differently at the systemic and portal levels in cirrhotic patients.
NCT05118308
This study will directly compare the endoscopic ultrasound guided approach to obtain adequate liver biopsies and portal pressure gradient measurements to the current standard of care which uses the transjugular approach.
NCT04807803
Minimal hepatic encephalopathy (MHE) is a subclinical cognitive impairment and represents the mildest type of hepatic encephalopathy (HE). Portal hypertension is the main complication of cirrhosis and is responsible of severe complications such as HE. The consequence of portal hypertension is the formation of the spontaneous portosystemic shunts (SPSS). The relationship between the SPSS and their characteristics and the prevalence of MHE in patient with cirrhosis is poorly known. The main objective of this study is to evaluate the MHE in patients with cirrhosis and portal hypertension.
NCT07492862
Porto-sinusoidal vascular disease (PSVD) is a rare clinical entity characterized by significant portal hypertension in the absence of cirrhosis on liver histology, which may or may not show specific alterations of the portal vein, sinusoids, or hepatic lobular architecture. Currently, diagnosis of this condition necessarily requires a liver biopsy and, despite some differences detected on imaging studies-and particularly on liver and spleen elastography-PSVD remains indistinguishable from cirrhosis using non-invasive tests. Contrast-enhanced ultrasound (CEUS) is an easy-to-perform, repeatable, and cost-effective examination that enables real-time assessment of parenchymal or focal liver lesion perfusion. Moreover, the application of dynamic contrast-enhanced ultrasound (DCE-US-i.e., contrast-enhanced ultrasound followed by quantitative perfusion analysis using dedicated software, such as the VueBox Software that will be used in this study) allows integration of CEUS qualitative assessment with quantitative evaluation of tissue perfusion through analysis of time-intensity curves generated during contrast transit. From this analysis, several perfusion-related parameters can be derived (for example, peak enhancement, time to peak, or area under the curve), which have already proven useful in improving differential diagnosis of focal liver lesions and in predicting treatment response and systemic therapy outcomes. To date, the use of DCE-US for the diagnosis of PSVD has not yet been described; however, based on the underlying histological alterations associated with this disease, it is reasonable to hypothesize that parameters obtained with this technique in the liver parenchyma of patients with PSVD may differ from those measured in patients with liver cirrhosis. The aim of the present project is to apply DCE-US in patients with PSVD and in patients with cirrhosis to evaluate potential significant differences in perfusion parameters, and to assess the feasibility of a non-invasive differential diagnosis between the two conditions using this technique in combination with elastography and bidimensional ultrasound data to develop a multiparametric diagnostic score.
NCT07464522
The goal of this observational study: * To evaluate the diagnostic accuracy of non-invasive markers in predicting the presence and grading of esophageal varices in children with portal hypertension. * To correlate these non-invasive markers with the severity of portal hypertension and the grade of esophageal varices to identify patients at high risk of bleeding. * To propose a defined protocol for screening esophageal varices in those children.
NCT07459972
This prospective open-label parallel pilot clinical study evaluated the efficacy and safety of physiologically based pharmacokinetic (PBPK)-guided simvastatin dosing in Child-Pugh A and B cirrhotic patients with portal hypertension over a 3-month period. Twenty-two patients were enrolled following screening, and portal hemodynamic, laboratory, and safety parameters were assessed.
NCT07450651
Background: Chronic hepatitis B (CHB)-related cirrhosis is a common cause of portal hypertension, which leads to the development of gastroesophageal varices (EGVs). High-risk varices (HRV) are associated with a higher risk of bleeding and require timely interventions. Endoscopy is the gold standard for diagnosing HRV but is invasive and not suitable for routine screening in large populations. Objective: This study aims to develop a noninvasive model based on hepatic and splenic microcirculatory perfusion parameters derived from intravoxel incoherent motion (IVIM) magnetic resonance imaging (MRI) to predict and rule out HRV in patients with compensated CHB-related cirrhosis receiving antiviral therapy. Methods: This observational, retrospective study will include patients with compensated CHB-related cirrhosis who have undergone both esophagogastroduodenoscopy (EGD) and IVIM MRI. Microcirculatory perfusion parameters will be extracted from IVIM images using a biexponential model, and their ability to predict HRV will be assessed. Outcomes: The study will validate the performance of the Hepato-Splenic Microcirculatory Perfusion Model (HSMP) in ruling out HRV compared to conventional noninvasive tests like APRI, FIB-4, and LSM. The model's diagnostic accuracy will be evaluated with a focus on reducing unnecessary endoscopic procedures. Significance: If successful, this model could reduce the need for invasive endoscopy and improve the management of cirrhosis patients by providing a safer and more accessible screening tool for HRV.
NCT07405749
Alterations in conventional coagulation tests in patients with cirrhosis and/or portal hypertension do not reliably predict bleeding risk, as hemostatic balance is complex and often compensated. Many procedure-related bleeding events are driven by non-coagulatory factors, such as portal hypertension or technical aspects of the procedure. Most commonly performed procedures carry a low risk of bleeding even in the presence of elevated INR or thrombocytopenia, and no validated laboratory thresholds support prophylactic correction. Risk assessment should therefore be based on procedural factors, severity of liver disease, and systemic patient conditions, with correction of modifiable risk factors particularly before high-risk elective procedures.
NCT07390344
This Registry will look at patients being treated with a transjugular intrahepatic portosystemic shunt (TIPS) procedure for portal hypertension. The purpose of this Registry is to collect data on the safety and performance of the GORE® VIATORR® TIPS Endoprosthesis with Controlled Expansion (6-10mm) for 2 years in real world setting. Additionally, data will be collected on the safety and performance of the GORE TIPS Set when utilized.
NCT06205992
How to construct a novel, non-invasive, accurate, and convenient method to achieve prediction of hepatic venous pressure gradient (HVPG) is an important general problem in the management of portal hypertension in cirrhosis. We plan to compare the ability of three demensional-magnetic resonance elastography (3D-MRE) to two demensional-magnetic resonance elastography (2D-MRE) to establish a risk stratification system and perform tailored management for portal hypertension in cirrhosis.
NCT07352228
Cirrhosis is a serious liver disease where scar tissue replaces healthy liver tissue, often leading to portal hypertension-a condition where blood pressure in the liver's blood vessels rises. A life-threatening complication of this is variceal bleeding, which happens when swollen veins (varices) in the esophagus or stomach rupture. Around 30% of patients die during their first variceal bleeding episode, and 60-70% of survivors face a high risk of rebleeding, making secondary prevention crucial for improving outcomes. Current guidelines recommend combining non-selective beta-blockers (a type of blood pressure medication) with endoscopic ligation (a procedure to tie off swollen veins) as the first-line treatment to prevent recurrent variceal bleeding. Propranolol is a commonly used non-selective beta-blocker, but it only works for 30-50% of patients by effectively reducing liver vein pressure. Carvedilol, a newer generation of this type of drug, is more potent at lowering liver vein pressure and is recommended for preventing first-time variceal bleeding. However, there is limited research on its effectiveness and safety for preventing recurrent bleeding, and concerns exist that it may cause low blood pressure, which could worsen conditions like ascites (fluid buildup in the abdomen) in some patients. This study aims to answer a key question: Is combining endoscopic treatment with carvedilol more effective and safe than combining endoscopic treatment with propranolol for preventing recurrent bleeding in cirrhosis patients who have already experienced variceal bleeding? The research hypothesis is that carvedilol will reduce the rate of recurrent bleeding more effectively than propranolol when both are used alongside endoscopic treatment, while having a similar or acceptable safety profile. This is a single-center randomized controlled trial conducted by the First Affiliated Hospital of Air Force Medical University, lasting 3 years (from October 2025 to October 2028). The investigators plan to recruit 350 eligible patients, aged 18-75, who have been diagnosed with cirrhosis, have a history of variceal bleeding (with the most recent episode 6-30 days before enrollment), and voluntarily agree to participate and complete follow-up. These patients will be randomly divided into two groups in a 1:1 ratio. Both groups will receive endoscopic treatment first; one group will then take propranolol, and the other will take carvedilol, with dosage adjustments based on their heart rate, blood pressure, and tolerance. Throughout the study, the investigators will closely monitor patients for recurrent bleeding (the main measure of effectiveness) and other outcomes like disease progression, death, new or worsening ascites, liver encephalopathy (brain dysfunction due to liver disease), and changes in quality of life. The investigators will also track side effects of the drugs and complications from the endoscopic procedure to assess safety. The results of this study will help clarify whether carvedilol can become a better choice than propranolol for preventing recurrent variceal bleeding, providing more reliable treatment guidance for cirrhosis patients and potentially improving their survival rates and quality of life.
NCT06669806
This Study is a prospective, multi-center, single-arm objective perform an criteria (OPC) study. A 12 months follow-up study on the patients who intend to receive the treatment of cirrhosis and complications of portal hypertension with the TIPS Stent Graft will be conducted. The primary evaluation endpoint of this Study is the stent patency at 6 months after treatment completion .
NCT07252570
Introduction: Pre-hepatic portal hypertension of malignant origin can lead to severe complications such as refractory ascites or gastrointestinal bleeding, significantly impairing patients' quality of life. Available therapeutic options are mainly symptomatic and do not address the venous obstruction. Portal vein stenting represents a minimally invasive alternative, which remains poorly studied in this setting. The aim of our study was to evaluate portal stent patency, as well as clinical efficacy and safety, in patients with symptomatic malignant stenosis or occlusion of the portal system. Methods: The team conducted a retrospective cohort study including 63 consecutive patients treated between April 2004 and March 2024 at CHU l'Archet and CAL Nice for symptomatic malignant stenosis or occlusion of the portal system. All patients underwent percutaneous transhepatic portal vein stenting with uncovered self-expandable metallic stents. The primary endpoint was stent patency, defined as the interval between implantation and the occurrence of an occlusion confirmed by imaging or end of follow-up. Secondary endpoints included technical success, clinical success (improvement of portal hypertension signs), and the occurrence of adverse events, graded according to the 2017 SIR classification.
NCT01072721
Early diagnosis of liver fibrosis is useful for the follow-up and treatment of chronic liver disease. At present, the unique validated method to evaluate the liver fibrosis in children, is the liver biopsy which is an invasive method. If the elastometry method is proved to be a good method to evaluate the fibrosis in children, a numerous liver biopsy could be avoided.
NCT07163689
Porto-sinusoidal Vascular Disease (PSVD) is characterized by a portal hypertension (PH) without cirrhosis. This can induce PH complications, like digestive hemorrhage from esophageal or gastric varices, ascites, or even portal thrombosis. Due to the rarity of MVPS, the treatment of complications of portal hypertension is modeled on the methods used in cirrhotic portal hypertension with non-cardio-selective beta blockers, endoscopic ligations or diuretics in first line therapy, as proposed by the Baveno VII recommendations. In complicated or refractory forms of PH in PSVD, the place of TIPS is also discussed, as in the field of cirrhosis. However, the experience of TIPS in PSVD is limited, reported in case reports and small specifically dedicated series. No predictive factors for survival or recurrence and tolerance were well known. A larger study with control group is needed in order to better know the right time and the right indication for the use of TIPS in complicated PH PSVD-related. The study will be retrospective, multicentric involving tertiary university French centers, expert in the management of TIPS. Patients white TIPS-PSVD will be compared with historical patients with TIPS-cirrhose, matched on age, sexe, indication of TIPS. The study will not comprise new intervention, only observational in a real life condition
NCT06861075
The purpose of this study is to assess the efficacy after one month of treatment with Carvedilol (12.5 mg daily) in primary prophylaxis of digestive haemorrhage due to portal hypertension in cirrhosis, by endoscopic ultrasound-guided portal pressure gradient measurement.
NCT05794555
This multicenter trial is being conducted to determine if sequential lactulose and Tele (virtual) Tai-Chi reduces the rate of injurious fall, non-injurious falls, incident overt Hepatic Encephalopathy (HE), and death or liver transplant over 24 weeks. Participants that are enrolled will be randomized to stage one of this project for approximately 12 weeks. After completing stage one, participants will be re-randomized to stage 2 of the project that will last approximately 12 more weeks. The study hypothesizes that sequential lactulose/TeleTai-Chi will reduce falls, incident overt HE, death and physical frailty and will improve cognitive function, and Health Related Quality of Life (HRQOL) over 24 weeks compared to other treatment combinations. As detailed below, an observational component that enrolls caregivers of the trial participants is being conducted. Upon completion, Participants listed in the record here only include trial participants; and the observational component was moved to a new registration for clarity, NCT07140120.