Conjugated bile acids promote cholangiocarcinoma cell invasive growth through activation of sphingosine 1‐phosphate receptor 2

Runping Liu, Renping Zhao, Xiqiao Zhou, Xiuyin Liang, Deanna J.W. Campbell, Xiaoxuan Zhang, Luyong Zhang, Ruihua Shi, Guangji Wang, William M. Pandak, Alphonse E. Sirica, Phillip B. Hylemon, Huiping Zhou – 22 February 2014 – Cholangiocarcinoma (CCA) is an often fatal primary malignancy of the intra‐ and extrahepatic biliary tract that is commonly associated with chronic cholestasis and significantly elevated levels of primary and conjugated bile acids (CBAs), which are correlated with bile duct obstruction (BDO). BDO has also recently been shown to promote CCA progression.

Liver transplantation in the management of porphyria

Ashwani K. Singal, Charles Parker, Christine Bowden, Manish Thapar, Lawrence Liu, Brendan M. McGuire – 22 February 2014 – Porphyrias are a group of eight metabolic disorders, each resulting from a mutation that affects an enzyme of the heme biosynthetic pathway. Porphyrias are classified as hepatic or erythropoietic, depending upon the site where the gene defect is predominantly expressed.

Clonal tracing of Sox9+ liver progenitors in mouse oval cell injury

Branden D. Tarlow, Milton J. Finegold, Markus Grompe – 22 February 2014 – Proliferating ducts, termed “oval cells,” have long been thought to be bipotential, that is, produce both biliary ducts and hepatocytes during chronic liver injury. The precursor to oval cells is considered to be a facultative liver stem cell (LSC). Recent lineage tracing experiments indicated that the LSC is SRY‐related HMG box transcription factor 9 postive (Sox9+) and can replace the bulk of hepatocyte mass in several settings.

Role of protein kinase C isoforms in bile formation and cholestasis

M. Sawkat Anwer – 22 February 2014 – Transhepatic solute transport provides the osmotic driving force for canalicular bile formation. Choleretic and cholestatic agents affect bile formation, in part, by altering plasma membrane localizations of transporters involved in bile formation. These short‐term dynamic changes in transporter location are highly regulated posttranslational events requiring various cellular signaling pathways.

Role of protein kinase C isoforms in bile formation and cholestasis

M. Sawkat Anwer – 22 February 2014 – Transhepatic solute transport provides the osmotic driving force for canalicular bile formation. Choleretic and cholestatic agents affect bile formation, in part, by altering plasma membrane localizations of transporters involved in bile formation. These short‐term dynamic changes in transporter location are highly regulated posttranslational events requiring various cellular signaling pathways.

Liver transplantation in the management of porphyria

Ashwani K. Singal, Charles Parker, Christine Bowden, Manish Thapar, Lawrence Liu, Brendan M. McGuire – 22 February 2014 – Porphyrias are a group of eight metabolic disorders, each resulting from a mutation that affects an enzyme of the heme biosynthetic pathway. Porphyrias are classified as hepatic or erythropoietic, depending upon the site where the gene defect is predominantly expressed.

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