Johann Ockenga

Summary

Affiliation: Klinikum Bremen-Mitte
Country: Germany

Publications

  1. doi request reprint [Nutritional therapy in acute pancreatitis]
    J Ockenga
    Medizinische Klinik II m S Gastroenterologie, Endokrinologie und Ernährungsmedizin, Klinikum Bremen Mitte, St Juergen Str 1, 28177, Bremen, Deutschland
    Med Klin Intensivmed Notfmed 108:401-7. 2013
  2. doi request reprint Plasma bile acids are associated with energy expenditure and thyroid function in humans
    Johann Ockenga
    Department of Gastroenterology, Hepatology, Endocrinology, and Nutrition, Klinikum Bremen Mitte, St Juergen Strasse 1, D 28177 Bremen, Germany
    J Clin Endocrinol Metab 97:535-42. 2012
  3. pmc Plasma bile acids are not associated with energy metabolism in humans
    Gemma Brufau
    Dept, of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands
    Nutr Metab (Lond) 7:73. 2010
  4. doi request reprint The role of epoxide hydrolase Y113H gene variant in pancreatic diseases
    Johann Ockenga
    Department of Gastroenterology, Hepatology and Endocrinology, Charite, Campus Mitte, Germany
    Pancreas 38:e97-e101. 2009
  5. doi request reprint Serum bile acids and leptin interact with glucose metabolism in patients with liver cirrhosis
    Luzia Valentini
    Charite Universitatsmedizin Berlin, Department of Gastroenterology, Infectiology and Rheumatology incl section on Clinical Nutrition, Chariteplatz 1, Berlin 10117, Germany
    Clin Nutr 32:122-9. 2013
  6. doi request reprint Circulating adipokines and the protective effects of hyperinsulinemia in inflammatory bowel disease
    Luzia Valentini
    Department of Gastroenterology, Hepatology and Endocrinology, Campus Mitte, Charite Universitatsmedizin Berlin, Berlin, Germany
    Nutrition 25:172-81. 2009
  7. doi request reprint Mutational analysis of the gene encoding the zymogen granule membrane glycoprotein 2 (GP2) in patients with chronic pancreatitis
    Heiko Witt
    Department of Hepatology and Gastroenterology, Charite, Campus Virchow Klinikum, Universitatsmedizin Berlin, Berlin, Germany
    Pancreas 39:188-92. 2010
  8. ncbi request reprint Keratin 8 sequence variants in patients with pancreatitis and pancreatic cancer
    Matthias Treiber
    Department of Hepatology and Gastroenterology, Charite, Campus Virchow Klinikum, Universitatsmedizin Berlin, Berlin, Germany
    J Mol Med (Berl) 84:1015-22. 2006
  9. doi request reprint Malnutrition and impaired muscle strength in patients with Crohn's disease and ulcerative colitis in remission
    Luzia Valentini
    Department of Gastroenterology, Hepatology and Endocrinology, CCM, Charite Universitatsmedizin Berlin, Berlin, Germany
    Nutrition 24:694-702. 2008
  10. doi request reprint Abnormal plasma peptide YY(3-36) levels in patients with liver cirrhosis
    Luzia Valentini
    Department of Gastroenterology, Hepatology and Endocrinology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Nutrition 27:880-4. 2011

Collaborators

Detail Information

Publications16

  1. doi request reprint [Nutritional therapy in acute pancreatitis]
    J Ockenga
    Medizinische Klinik II m S Gastroenterologie, Endokrinologie und Ernährungsmedizin, Klinikum Bremen Mitte, St Juergen Str 1, 28177, Bremen, Deutschland
    Med Klin Intensivmed Notfmed 108:401-7. 2013
    ..Individualized--primary enteral--nutritional support is an essential part of a multimodal therapy in severe acute pancreatitis and it improves clinical outcome...
  2. doi request reprint Plasma bile acids are associated with energy expenditure and thyroid function in humans
    Johann Ockenga
    Department of Gastroenterology, Hepatology, Endocrinology, and Nutrition, Klinikum Bremen Mitte, St Juergen Strasse 1, D 28177 Bremen, Germany
    J Clin Endocrinol Metab 97:535-42. 2012
    ..Animal studies implicate a role of bile acids (BA) in thyroid-regulated energy expenditure (EE) via activation of the TGR-5/adenylate cyclase/deiodinase type 2 pathway. Here we investigated these possible associations in humans...
  3. pmc Plasma bile acids are not associated with energy metabolism in humans
    Gemma Brufau
    Dept, of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands
    Nutr Metab (Lond) 7:73. 2010
    ..Therefore, our data do not support an important role of circulating BA in the control of human energy metabolism...
  4. doi request reprint The role of epoxide hydrolase Y113H gene variant in pancreatic diseases
    Johann Ockenga
    Department of Gastroenterology, Hepatology and Endocrinology, Charite, Campus Mitte, Germany
    Pancreas 38:e97-e101. 2009
    ..We studied the role of the EPHX1 c.337T>C (p.Y113H) variant, whichleads to altered enzyme activity, in pancreatic diseases...
  5. doi request reprint Serum bile acids and leptin interact with glucose metabolism in patients with liver cirrhosis
    Luzia Valentini
    Charite Universitatsmedizin Berlin, Department of Gastroenterology, Infectiology and Rheumatology incl section on Clinical Nutrition, Chariteplatz 1, Berlin 10117, Germany
    Clin Nutr 32:122-9. 2013
    ..We investigated possible involvements of bile acids (BA) and leptin in hepatogenous insulin resistance being present in up to 90% of cirrhotic patients...
  6. doi request reprint Circulating adipokines and the protective effects of hyperinsulinemia in inflammatory bowel disease
    Luzia Valentini
    Department of Gastroenterology, Hepatology and Endocrinology, Campus Mitte, Charite Universitatsmedizin Berlin, Berlin, Germany
    Nutrition 25:172-81. 2009
    ....
  7. doi request reprint Mutational analysis of the gene encoding the zymogen granule membrane glycoprotein 2 (GP2) in patients with chronic pancreatitis
    Heiko Witt
    Department of Hepatology and Gastroenterology, Charite, Campus Virchow Klinikum, Universitatsmedizin Berlin, Berlin, Germany
    Pancreas 39:188-92. 2010
    ..Genetic alterations of different pancreatic zymogens or their inhibitors have been associated with chronic pancreatitis (CP)...
  8. ncbi request reprint Keratin 8 sequence variants in patients with pancreatitis and pancreatic cancer
    Matthias Treiber
    Department of Hepatology and Gastroenterology, Charite, Campus Virchow Klinikum, Universitatsmedizin Berlin, Berlin, Germany
    J Mol Med (Berl) 84:1015-22. 2006
    ..6%) control subjects of African descent. Our data suggest that the KRT8 alterations, Y54H and G62C, do not predispose patients to the development of pancreatitis or pancreatic cancer...
  9. doi request reprint Malnutrition and impaired muscle strength in patients with Crohn's disease and ulcerative colitis in remission
    Luzia Valentini
    Department of Gastroenterology, Hepatology and Endocrinology, CCM, Charite Universitatsmedizin Berlin, Berlin, Germany
    Nutrition 24:694-702. 2008
    ..In addition, possible effects of gender, malnutrition, inflammation, and previous prednisolone therapy were investigated...
  10. doi request reprint Abnormal plasma peptide YY(3-36) levels in patients with liver cirrhosis
    Luzia Valentini
    Department of Gastroenterology, Hepatology and Endocrinology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Nutrition 27:880-4. 2011
    ..We thus investigated fasting and postprandial PYY(3-36) serum levels in patients with decompensated LC, patients with compensated LC with in situ TIPS, and healthy controls...
  11. doi request reprint Association between intestinal tight junction permeability and whole-body electrical resistance in healthy individuals: a hypothesis
    Luzia Valentini
    Department Gastroenterology, Hepatology and Endocrinology, Charite Universitatsmedizin Berlin, Berlin, Germany
    Nutrition 25:706-14. 2009
    ..The present report deals with the coincidentally observed associations between permeability results and electrical raw values of BIA and their subsequent reproduction in a larger group of individuals...
  12. ncbi request reprint Elevated resistin levels in cirrhosis are associated with the proinflammatory state and altered hepatic glucose metabolism but not with insulin resistance
    Matthias J Bahr
    Department of Gastroenterology, Hepatology, and Endocrinology, Hannover Medical School, Germany
    Am J Physiol Endocrinol Metab 291:E199-206. 2006
    ....
  13. ncbi request reprint Leptin and insulin response to long-term total parenteral nutrition depends on body fat mass
    Kinan Rifai
    Department of Gastroenterology, Hepatology and Endocrinology, Medical School Hannover, Carl Neuberg Strasse 1, 30625 Hannover, Germany
    Clin Nutr 25:773-9. 2006
    ..However, the artificial situation of long-term total parenteral nutrition (TPN) and its effects on serum leptin and insulin is not fully understood...
  14. ncbi request reprint Overlap syndrome of autoimmune pancreatitis and cholangitis associated with secondary Sjögren's syndrome
    Tilman Pickartz
    Department of Gastroenterology, Hepatology Endocrinology, Metabolism and Nutritrion, Medical Faculty Charité, Humboldt University, Berlin, Germany
    Eur J Gastroenterol Hepatol 16:1295-9. 2004
    ..Autoimmune pancreatitis may present as an isolated or syndromic disease. It is an autoimmune disorder of unknown cause and should be included in the differential diagnosis of pancreatic disorders...
  15. ncbi request reprint Introducing genetic testing for adult-type hypolactasia
    Carsten Buning
    Department of Gastroenterology, Hepatology and Endocrinology, Charite, Campus Mitte, Humboldt University of Berlin, Berlin, Germany
    Digestion 71:245-50. 2005
    ..To evaluate genotyping for two DNA variants (c.1993+327C>T and c.1438+117G>A), recently found to be associated with adult-type hypolactasia, in the diagnosis of lactose intolerance...
  16. ncbi request reprint UDP glucuronosyltransferase (UGT1A7) gene polymorphisms increase the risk of chronic pancreatitis and pancreatic cancer
    Johann Ockenga
    Department of Gastroenterology, Hepatology and Oncology, Hannover Medical School, Carl Neuberg Strasse 1, 30625 Hannover, Germany
    Gastroenterology 124:1802-8. 2003
    ..Uridine 5'-diphosphate glucuronosyltransferases are phase II detoxifying enzymes capable of tobacco-borne toxicant inactivation and cellular protection. This study analyzes UGT1A7 gene polymorphisms in pancreatic diseases...