February 23-March 2, 1985, St. Christoph, Arlberg, Austria

Frontmatter -- PREFACE -- LIST OF PARTICIPANTS -- CONTENTS -- 1. CHEMISTRY AND ANALYSIS OF PTERIDINES -- ELECTROLYSIS OF PTERIDINES / Pfleiderer, Wolfgang / Gottlieb, Raphael -- NITRITE OXIDATION OF TETRAHYDROPTERINS / Heales, S.J.R. / Blair, J.A. / Guest, A.E. / Pheasant, A.E. -- ACYLATION OF TETRAHYDROPTERINS / Lockhart, Ronan John / Pfleiderer, Wolfgang -- SYNTHESIS AND PROPERTIES OF 5,6-DIHYDROPTERIDINES / Soyka, Rainer / Pfleiderer, Wolfgang -- SYNTHESIS AND PROPERTIES OF NEW TETRAHYDROPTERIDINES / Traub, Hermann / Pfleiderer, Wolfgang -- INTER- AND INTRAMOLECULAR REDOX-REACTIONS BY 5,6- RESP. 7,8-DIHYDROPTERINES; DO THESE COMPOUNDS BEHAVE AS REDOX COFACTORS DURING THE BIOSYNTHESIS OF 5,6,7,8-TETRAHYDRO-L-BIOPTERIN ? / Viscontini, Max -- DETERMINATION OF NEOPTERIN AND REDUCED NEOPTERINS BY RADIOIMMUNOASSAY / Rokos, H. / Bienhaus, G. / Gadow, A. / Rokos, K. -- THE DETERMINATION OF PTERINS, BIOGENIC AMINE METABOLITES, AND AROMATIC AMINO ACIDS IN CEREBROSPINAL FLUID USING ISOCRATIC REVERSE PHASE LIQUID CHROMATOGRAPHY WITH IN SERIES DUAL CELL COULOMETRIC ELECTROCHEMICAL AND FLUORESCENCE DETECTION:- USE IN THE STUDY OF INBORN ERRORS OF DIHYDROPTERIDINE REDUCTASE AND 5,lO-METHYLENETETRAHYDROFOLATE REDUCTASE / Hyland, K. / Smith, I. / Howells, D. W. / Clayton, P. T. / Leonard, J. V. -- 2. BIOCHEMISTRY AND METABOLISM OF PTERIDINES -- TETRAHYDROBIOPTERIN METABOLISM IN THE CENTRAL NERVOUS SYSTEM / Blair, John A. -- ENZYMATIC FORMATION OF H4-BIOPTERIN IN DROSOPHILA MELANOGASTER / Brown, G.M. / Switchenko, A.C. / Primus, J.P. -- TETRAHYDROBIOPTERIN BIOSYNTHESIS. STUDIES ON THE REACTION OF DIHYDRONEOPTERIN TRIPHOSPHATE IN THE PRESENCE OF PHOSPHATE-ELIMINATING ENZYME FROM HUMAN LIVER / Curtius, H.-Ch. / Leimbacher, W. / Niederwieser, A. / Ghisla, Sandro -- BIOSYNTHESIS OF TETRAHYDROBIOPTERIN: INCORPORATION OF LABEL FROM REDUCED PYRIDINE NUCLEOTIDE DURING FORMATION FROM DIHYDRONEOPTERIN TRIPHOSPHATE / Ghisla, Sandro / Curtius, Hans-Christoph / Heintel, Dorothee / Küster, Thomas / Leimbacher, Walter / Niederwieser, Alois -- TETRAHYDROBIOPTERIN BIOSYNTHESIS IN MAN / Heintel, Dorothee / Leimbacher, Walter / Redweik, Udo / Blau, Nenad / Niederwieser, Alois / Curtius, Hans-Christoph / Ghisla, Sandro -- PHOSPHORYLATION OF UNPROTECTED D-NEOPTERIN / Zagalak, B. / Neuheiser, F. / Curtius, H.-Ch. -- MEASUREMENT OF PHOSPHATE-ELIMINATING ENZYME (PEE) ACTIVITY IN LIVER BIOPSIES / Niederwieser, A. / Leimbacher, W. / Curtius, H.-Ch. -- INHIBITION OF THE TETRAHYDROPTERIN PATHWAY FOR BIOPTERIN COFACTOR BIOSYNTHESIS BY N-ACETYLSEROTONIN IN CELL CULTURES AND IN ENZYME PREPARATIONS AND STUDIES ON THE MECHANISM OF TETRAHYDROPTERIN FORMATION / Smith, Gary K. / Duch, David S. / Nichol, Charles A. -- ACTH STIMULATION OF TETRAHYDROBIOPTERIN BIOSYNTHESIS AND STEROIDOGENESIS IN ADRENAL CORTICAL TUMOR CELLS IN CULTURE / Duch, David S. / Woolf, Jeffrey H. / Edelstein, Mark P. / Viveros, O. Humberto / Abou-Donia, Martha M. / Nichol, Charles A. -- ENDOCRINE AND METABOLIC REGULATION OF GTP-CYCLOHYDROLASE ACTIVITY AND TETRAHYDROBIOPTERIN LEVELS IN RAT LIVER / Abou-Donia, Martha M. / Daniels, Alejandro J. / Diliberto, Emanuel / Nichol, Charles A. / Viveros, O. Humberto -- TETRAHYDROBIOPTERIN SYNTHESIS AND THE ROLE OF THE COFACTOR IN THE REGULATION OF TYROSINE HYDROXYLATION IN ADRENOMEDULLARY CHROMAFFIN CELLS / Abou-Donia, Martha M. / Zimmerman, Thomas P. / Nichol, Charles A. / Viveros, O. Humberto -- BIOPTERIN METABOLISM IN HEPATOMA CELLS / Dhondt, Jean-Louis / Cotton, Richard G.H. / Fowler, Kerry -- HIGH BIOPTERIN CONCENTRATION IN NUCLEAR FRACTIONS OF REGIONAL RAT-BRAIN PREPARATIONS / Knapp, S. / Merwin, M. -- 3. TETRAHYDROBIOPTERIN DEFICIENCIES, DIAGNOSIS AND THERAPY -- TRANSIENT NEONATAL HYPERPHENYLALANINEMIA DUE TO DEFECTIVE SYNTHESIS OF 7,8-DIHYDROBIOPTERIN / Okano, Y. / Shintuku, H. / Sawada, Y. / Isshiki, G. / Hase, Y. / Tsuruhara, T. / Oura, T. / Takahashi, S. / Kodama, Y. -- TETRAHYDROBIOPTERIN ANALOGUES AND THEIR ABILITY TO ENTER THE RAT STRIATUM AFTER