Publications by authors named "Laurans L"

The wave of wartime migration from Ukraine has raised a number of concerns about infectious diseases, the prevalence of which is higher in Ukraine than in host countries, with hepatitis C virus (HCV) infection being one of them. Our analysis aimed to assess the percentage of HCV-infected Ukrainian refugees under care in Polish centers providing antiviral diagnosis and therapy, to evaluate their characteristics and the effectiveness of treatment with direct-acting antiviral drugs (DAAs). The analysis included patients of Polish and Ukrainian nationality treated for HCV infection between 2022 and 2024 in Polish hepatology centers.

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Background: Eliminating hepatitis C virus (HCV) infections is a goal set by the World Health Organization. This has become possible with the introduction of highly effective and safe direct-acting antivirals (DAA) but limitations remain due to undiagnosed HCV infections and loss of patients from the cascade of care at various stages, including those lost to follow-up (LTFU) before the assessment of the effectiveness of the therapy. The aim of our study was to determine the extent of this loss and to establish the characteristics of patients experiencing it.

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Article Synopsis
  • Chronic high cholesterol levels lead to systemic immune responses that accelerate atherosclerosis, but the impact of alternating high-fat diets (HFD) had not been well studied.
  • Researchers used a mouse model to compare the effects of an alternating HFD versus a continuous HFD on atherosclerosis progression, finding that the alternating diet significantly worsened the condition.
  • The study revealed that this worsening was linked to IL-1β production, which triggered inflammatory responses and increased neutrophil levels that contributed to plaque formation and exacerbated atherosclerosis, suggesting that targeting these pathways could reverse the effects.
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  • * Early intermittent feeding of mice on a high-cholesterol diet speeds up atherosclerosis by altering arterial macrophage behavior and gene expression associated with ASCVD.
  • * The Young Finns Study links early cholesterol exposure to increased carotid atherosclerotic plaque in adulthood, emphasizing the need for better hyperlipidaemia management early in life to prevent ASCVD.
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Background: Hepatitis C virus (HCV) infection affects 50 million people worldwide with around 242,000 deaths annually, mainly due to complications such as cirrhosis and hepatocellular carcinoma (HCC). Portal hypertension (PH) caused by cirrhosis leads to severe consequences, including esophageal varices (EV). This study aimed to evaluate the effectiveness and safety of direct-acting antiviral (DAA) treatment in patients with and without EV.

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  • * A high-fat diet (HFD) changes how Trp is processed in the body and can lead to inflammation, which might worsen heart problems.
  • * This study shows that controlling Tryptophan metabolism could help reduce gut inflammation and heart disease, leading to new treatment options.
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Language disorders, which are still very poorly detected, are often present in abused children. While the consequences are well known and long-lasting, little is known about the development and specific characteristics of these children, depending on where they were placed, the type of abuse they suffered and the age at which they were placed. This finding led to a review of the literature aimed at better defining the state of knowledge on the subject, for the benefit of better detection and treatment.

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  • A high-fat diet (HFD) alters gut microbiota, which drives the progression of atherosclerosis, while a high-cholesterol diet does not have the same effect.
  • Low fiber intake further exacerbates this microbiota dysbiosis, leading to increased proliferation of gut immune cells that migrate to sites of atherosclerotic plaques.
  • The research highlights a potentially important link between diet, gut microbiome changes, and immune responses in atherosclerosis, suggesting that modifying the gut microbiome could serve as a treatment strategy.
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  • CARD9 is an important signaling molecule in macrophages, but its function in atherosclerosis is still not well understood.
  • Deletion of the CARD9 gene leads to increased atherosclerosis in specific mouse models, indicating that it helps protect against this condition independent of the adaptive immune system.
  • CARD9 deficiency affects macrophage behavior by promoting inflammation and lipid accumulation, but treatments like rapamycin or metformin can reverse these effects and help restore normal macrophage functions.
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JAK2V617F mutation is associated with an increased risk for athero-thrombotic cardiovascular disease, but its role in aortic disease development and complications remains unknown. In a cohort of patients with myeloproliferative neoplasm, JAK2V617F mutation was identified as an independent risk factor for dilation of both the ascending and descending thoracic aorta. Using single-cell RNA-seq, complementary genetically-modified mouse models, as well as pharmacological approaches, we found that JAK2V617F mutation was associated with a pathogenic pro-inflammatory phenotype of perivascular tissue-resident macrophages, which promoted deleterious aortic wall remodeling at early stages, and dissecting aneurysm through the recruitment of circulating monocytes at later stages.

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Hepatitis C infection is one of the main reasons for liver cirrhosis and hepatocellular carcinoma. In recent years, more and more is being heard about extrahepatic manifestations of the hepatitis C infection including its possible influence on the development of hypertension and cardiovascular diseases. In the given work, the frequency analysis of the incidence of hypertension and cardiovascular diseases among 2898 HCV-infected patients treated in Poland and the assessment of their relevance to the HCV genotype and the progression of liver fibrosis can be found.

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HCV infection is one of the main reasons for liver cirrhosis and hepatocellular carcinoma. In recent years, one finds more and more extrahepatic manifestations of HCV infection, including its possible influence on the development of diabetes. In the presented work, one finds the frequency analysis of the incidence of diabetes among 2898 HCV infected patients treated in Poland, and the assessment of their relevance to the HCV genotype and the progression of fibrosis.

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There is still limited data available from real-world experience studies on the pangenotypic regimens in patients with genotype (GT) 3 hepatitis C virus (HCV) infection and liver cirrhosis. The current study aimed to evaluate the efficacy and safety of pangenotypic regimens in this difficult-to-treat population. A total of 236 patients with mean age 52.

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Background: The introduction of direct-acting antiviral drugs into clinical practice has revolutionized the treatment of chronic hepatitis C, making it highly effective and safe for patients. However, few researchers have analyzed the factors causing therapy failure in some patients.

Aim: To analyze factors influencing the failure of direct antiviral drugs in the large, multicenter EpiTer-2 cohort in a real-world setting.

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Background And Aims: The aim of this study was to assess the real-life effectiveness and safety of direct acting antivirals (DAAs) in patients with cirrhosis and history of hepatic decompensation compared to those with compensated cirrhosis.

Method: Data of patients treated with DAAs and included in the EpiTer-2 database (N = 10 152) were collected retrospectively. The primary endpoint was sustained viral response (SVR) at 12 weeks posttreatment.

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Liver injury-expressed as elevated liver enzymes-is common in patients with COVID-19. Little is known about the potential mechanisms of liver damage by SARS-CoV-2. A direct cytopathic effect on hepatocytes as well as injury related to hypoxia or hepatotoxicity are being considered.

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Background: Ischemic cardiovascular diseases, particularly acute myocardial infarction (MI), is one of the leading causes of mortality worldwide. Indoleamine 2, 3-dioxygenase 1 (IDO) catalyzes 1 rate-limiting step of L-tryptophan metabolism, and emerges as an important regulator of many pathological conditions. We hypothesized that IDO could play a key role to locally regulate cardiac homeostasis after MI.

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The triggering receptor expressed on myeloid cells 1 (TREM-1) drives inflammatory responses in several cardiovascular diseases but its role in abdominal aortic aneurysm (AAA) remains unknown. Our objective was to explore the role of TREM-1 in a mouse model of angiotensin II-induced (AngII-induced) AAA. TREM-1 expression was detected in mouse aortic aneurysm and colocalized with macrophages.

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Background And Aims: The revolution of the antiviral treatment of hepatitis C virus (HCV) infection resulting in higher effectiveness came with the introduction of direct-acting antivirals with pangenotypic regimens as a final touch. Among them, the combination of glecaprevir (GLE) and pibrentasvir (PIB) provides the opportunity for shortening therapy to 8 weeks in the majority of patients. Because of still insufficient evaluation of this regimen in the real-world experience, our study aimed to assess the efficacy and safety of 8-week GLE/PIB in chronic hepatitis C patients depending on liver fibrosis and genotype (GT).

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BACKGROUND COVID-19 is an infectious disease caused by SARS-CoV-2. It has spread rapidly through the world, endangering human life. The main target of COVID-19 is the lungs; however, it can involve other organs, including the liver.

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Objectives: The aim of the study was to analyze the prevalence and clinical characteristics of HCV/HBV coinfection and to evaluate the rate of HBV-reactivation during anti-HCV therapy in a large real-world study.

Methods: Analyzed population consisted of 10,152 chronic hepatitis C patients treated with DAA between 2015 and 2019 in a nationwide study. Prior to the DAA all subjects had HBsAg and 60% anti-HBc testing.

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Article Synopsis
  • Adaptive immune responses play a role in the development of atherosclerosis, with type 1 responses being harmful and type 2 responses providing protection.
  • The study focused on thymic stromal lymphopoietin (TSLP), a cytokine important for type 2 immune responses, to see if it was crucial for the anti-atherogenic effects of Freund's adjuvant.
  • Results showed that Freund's adjuvant induced TSLP expression through different mechanisms in male and female mice, and TSLP signaling was essential for reducing atherosclerosis, as ApoE mice had less atherogenesis compared to ApoE/TSLPR mice that lacked this signaling.
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