Several Helicobacter species have recently been isolated from the bile and hepatobiliary systems of murine species, and are well recognized as a pathogen of the hepatobiliary disorder. This study was planned to investigate whether Helicobacter species possess a causative potential for human hepatobiliary disease, especially for hepatobiliary carcinogenesis. Bile and hepatobiliary tissue samples...

Fluorescence-mediated tomography (FMT) is a quantitative three-dimensional imaging technique for preclinical research applications. The combination with micro-computed tomography (µCT) enables improved reconstruction and analysis. The aim of this study is to assess the potential of µCT-FMT and kinetic modeling to determine elimination and retention of typical model drugs and drug delivery syste...

INTRODUCTION One of the major patterns of drug-induced liver injury (DILI) observed in man is cholestatic DILI. The mechanisms are complex and include decreased bile formation, which results in increased bile acid levels in blood [1]. Hepatobiliary transporters mediate uptake and excretion of drugs and endogenous substances. It has been proposed that inhibition of biliary efflux transporters ma...

  Introduction: Over expression of selected peptide receptors in human tumors has been shown to represent clinically relevant targets for cancer diagnosis and therapy. The aim of this work was to investigate Neuropeptide Y (NPY) as a new radiopharmaceutical for diagnosis of breast cancer. Methods: A neuropeptide Y analogues with Y1 receptor preference and agonistic p...

introduction: early differentiation of biliary atresia from neonatal hepatitis is of utmost importance, since on time surgery of biliary atresia significantly improves the outcome. hepatobiliary scintigraphy is an integral part of diagnosis work-up of these patients; however its specificity for diagnosis of biliary atresia is suboptimal. in this study we evaluated the value of ursodeoxycholic a...

Previous studies have demonstrated that phenobarbital (PB) significantly impairs the biliary excretion of acetaminophen glucuronide (AG) in rats. Studies also suggested that Mrp2 mediates AG biliary excretion, and Mrp3 is involved in AG basolateral export. It was hypothesized that inhibition of Mrp2-mediated AG transport by PB or PB metabolites, and PB induction of Mrp3, may contribute to the i...

UNLABELLED The organic anion (99m)Tc-N-[2-[(3-bromo-2,4,6-trimethylphenyl)-amino]-2-oxoethyl]-N-(carboxymethyl)-glycine ((99m)Tc-mebrofenin) and its analogs are widely used for hepatobiliary imaging. Identification of the mechanisms directing bile canalicular transport of these agents will provide insights into the basis of their hepatic handling for assessing perturbations. METHODS We perfor...

In connection with mechanism of action studies with Ntrifluoroacetyladriamycin-14-valerate (AD 32), a superior Adriamycin (ADR) analog under development in these laboratories, serial bile samples were collected from male Sprague-Dawley rats given a single i.v. dose of either ADR (4 mg/kg) or AD 32 (20 mg/kg) and were analyzed for anthracyclines by thin-layer chromatography-fluorometry and high-...

In connection with mechanism of action studies with N-trifluoroacetlyadriamycin-14-valerate (AD 32), a superior Adriamycin (ADR) analog under development in these laboratories, serial bile samples were collected from male Sprague-Dawley rats given a single i.v. dose of either ADR (4 mg/kg) or AD 32 (20 mg/kg) and were analyzed for anthracyclines by thin-layer chromatography-fluorometry and high...

Previous investigations have suggested that probenecid (PRB) alters the in vivo disposition of valproic acid (VPA), perhaps by inhibiting hepatic formation of valproate glucuronide (VG). Because VPA and PRB bind moderately to plasma proteins, protein binding also is a potential locus of interaction. The purpose of this investigation was to determine whether in vitro systems could accurately pre...