Multiparametric MR for Rapid Imaging Assessment of the Liver
Liver CirrhosisFatty LiverThe RIAL study aims to investigate whether non-invasive measurement of liver fat, iron content and fibrosis are as accurate as liver biopsy specimens in determining if patients have non-alcoholic fatty liver disease (NAFLD) or steatohepatitis (NASH), or other suspected liver disease. Currently, the gold-standard for the diagnosis and staging of liver disease is a liver biopsy. In this study, consecutive patients will be offered a multiparametric MR scan to assess their liver while they await a liver biopsy. Study time-frame: The scan will be performed in the 6-week period before their biopsy, and results will be compared to biopsy findings. results will be presented at the end of the study when MR data outcomes are compared to gold-standard biopsy dat. Participants will only have to attend one study visit to participate - there will be no patient follow-up.
Repeatability and Reproducibility of Multiparametric MRI
Liver DiseasesPrimary Biliary Cirrhosis7 moreThis study aims to prospectively assess the repeatability and reproducibility of iron-corrected T1 (cT1), T2*, and hepatic proton density fat fraction (PDFF) quantification with multiparametric MRI using the LiverMultiScan™ (LMS, Perspectum Diagnostics, Oxford, UK) protocol across different field strengths, scanner manufacturers and models.
Micro RNA Levels in NAFLD
Non-Alcoholic Fatty Liver DiseaseEpidemiological study of NAFLD, NASH patients. Descriptions of altered miRNA profiles in NAFLD patients especially with fibrosis. - Explore the role of circulating miRNAs as biomarkers for the early diagnosis and evaluation of NAFLD patient with fibrosis.
Clinical, Biochemical and Body Composition Analysis in Assessment of Steatosis in Non Alcoholic...
Non-alcoholic Fatty Liver Disease NAFLDNon-alcoholic fatty liver disease (NAFLD) includes a spectrum of liver disorders characterized by accumulation of hepatic fat in absence of significant alcohol consumption (<20 gm/day) and other causes of liver diseases. It is the most common cause of asymptomatic elevation of liver enzymes worldwide (Marchesini et al., 2003). Unfortunately, to date, existing non- or minimally invasive biomarkers are inadequate. While a number of non- or minimally invasive tests are able to rule out fibrosis or cirrhosis, no single test to identify steatosis, to early diagnose NASH, or to predict the disease progression is available. Moreover, specialized, combined tests are required to assess treatment response in clinical trials on emerging compounds (Piazzolla and Mangia, 2020). Among minimally invasive tools, plasma biomarkers and composite scores defined as "wet biomarkers" are commonly used. For example, fasting insulin level and its use in measurement of insulin resistance, Lipid Accumulation Product (LAP) score (Bedogni et al., 2010), the NAFLD Liver Fat Score (NLFS) (Kontronen et al., 2009), Hepatic Steatosis Index (HSI) (Lee et al., 2010), controlled attenuation parameter (CAP) measurement by fibroscan (Piazzolla and Mangia, 2020). Recent studies have shown that CAP significantly correlates with the percentage of steatosis and steatosis grade and that median CAP is higher among patients with significant steatosis (Sasso et al., 2012 & Karlas et al., 2017). The prevalence of NAFLD is 80-90% in obese, 30-50% in patients with diabetes and up to 90% in patients with hyperlipidemia (Abenavoli et al., 2014) Central obesity or visceral fat (VF) (determined by waist circumference (WC)) is defined as the presence of excess fat in the abdomen, and this type of obesity is often associated with the development and progression of NAFLD or more advanced forms of liver disease (Abenavoli et al., 2016). Thus, measurement of body composition rather than BMI may be helpful in the prediction of NAFLD (Milić et al., 2014 and Abenavoli et al., 2016) There is a growing need to assess the steatosis in NAFLD patients using minimally invasive tools.
Copeptin and Nonalcoholic Fatty Liver Disease
NAFLDCopeptin, a surrogate marker for vasopressin, has been found to be elevated in metabolic disorders including obesity and diabetes, which are disorders both associated with nonalcoholic fatty liver disease (NAFLD), and therefore suggest a potential role for vasopressin in the pathogenesis of NAFLD. The investigators intend to investigate if there is an association of vasopressin with the presence and severity of NAFLD.
"Preventing Cardiovascular Ischemic Events and Arresting Their Consequences in Type 2 Diabetic Population...
Type2 Diabetes MellitusMicroangiopathy5 moreCurrent methods based on traditional Cardiovascular risk factors are not clinically useful for identifying Type 2 Diabetes patients at risk of developing acute Cardiovascular ischemic events (ie.myocardial infarction or stroke). In addition, Cardiovascular ischemic events in Type 2 Diabetes population have worse prognosis than in general population. In fact, there is sufficient experimental evidence indicating that diabetes exaggerates the deleterious effects of ischemic events and worsens their outcome. A prolonged sub-clinical phase exists before a Cardiovascular event occurs in Type 2 Diabetes patients. Therefore, new strategies aimed at identifying those patients with this subclinical Cardiovascular Diabetes and, consequently, more prone to develop Cardiovascular events is a challenge to be met.
Visceral Abdominal Fat, Non Alcoholic Fatty Liver Diseases and Asymptomatic Coronary Atherosclerosis...
Visceral FatFatty Liver2 moreVisceral fat or peri-omental fat is increasingly associated with metabolic syndrome, a condition carrying a high risk of coronary artery disease. The independent role of Visceral Fat in cardiovascular risk remains unclear. Patients with excess of visceral fat and NAFLD patients will have higher prevalence of coronary atherosclerosis plaques independently by metabolic syndrome diagnosis. Suggesting that the presence of visceral fat and/or fatty liver will be considered an important condition to optimize the cardiovascular risk stratification
Meta-Analyses of the Effect of Vegetable Protein for Animal Protein on Cardiometabolic Risk
DiabetesPrediabetes11 moreVegetarian diets have been associated with a reduced risk of preventable diseases such as type 2 diabetes and cardiovascular disease. These effects may be mediated through direct or indirect pathways. Although the high intakes of nuts, legumes, dietary fibre, whole grains, and unsaturated plant oils have each individually been associated with lower risk of type 2 diabetes and cardiovascular disease, so too has the displacement of red meats, processed meats, and saturated animal fats. One of the most important considerations in moving from animal-based diets to more plant-based diets is the replacement of animal proteins (e.g. meat, fish, dairy, eggs) with vegetable proteins (e.g. legumes, nuts, and seeds). It is unclear whether this particular replacement alone results in advantages for metabolic and cardiovascular health. To improve evidence-based guidance for dietary guidelines and health claims development, we propose to conduct a series of systematic reviews and meta-analyses of the effect of plant-based protein in exchange for animal protein on blood lipids, glycemic control, blood pressure, body weight, uric acid, markers of non-alcoholic fatty liver disease (NAFLD), and kidney function and injury. The systematic review process allows the combining of the results from many small studies in order to arrive at a pooled estimate, similar to a weighted average, of the true effect. The investigators will be able to explore whether the effects of replacing animal-based protein for plant-based protein hold true across different sexes, age groups, and background disease states and whether the effect depends on the protein source, dose, or background diet. The findings of this proposed knowledge synthesis will help improve the health of Canadians through informing recommendations for the general public, as well as those at risk of heart disease and diabetes.
Non Alcoholic Steatohepatitis in Relation to Visceral and Subcutaneous Fat
NASH - Nonalcoholic SteatohepatitisEvaluate the relationship between the severity of fatty liver in NAFLD assessed by ultrasonography and CT and the visceral fat area measured by CT
EXplanted LIver and Ex-vivo Pancreatic Specimen Evaluation by 7 TESLA MRI
Liver CirrhosisLiver Steatosis3 moreAim of this study is to evaluate the correlation between the characteristics detected by the 7T MRI equipment and the histological composition of native explanted livers (group A), liver graft excluded for donation (group B) and surgical specimens of primary pancreatic tumour, which underwent pancreaticoduodenectomy (group C).