Frontmatter -- PREFACE -- LIST OF PARTICIPANTS -- CONTENTS -- 1. CHEMISTRY AND ANALYSIS OF PTERIDINES -- SYNTHESES OF PTERIDINES / Pfleiderer, Wolfgang -- STEREOCHEMISTRY OF REDUCED PTERINES / Vlscontini, Max -- QUANTUM CHEMICAL ASPECTS OF PTERINS IN COMPARISON WITH GUANINE AND DEAZAGUANINE DERIVATIVES / Reibnegger, G. / Fuchs, D. / Hausen, A. / Knosp, O. / Wächter, H. -- DETERMINATION OF BIOPTERIN AND NEOPTERIN IN FLUIDS AND TISSUES BY RADIOIMMUNOASSAY / Sugimoto, Takashi / Matsuura, Sadao / Yamaguchi, Tokio / Sawada, Makoto / Nagatsu, Toshiharu -- TETRAHYDROBIOPTERIN IS DESTROYED BY AUTOCLAVING AT pH f.5: A COMPARISON OF CRITHIDIA AND HPLC ASSAYS / Milstien, Sheldon -- ISOLATION AND IDENTIFICATION OF PTERIDINES FROM SHEEP PINEALS AND THE INFLUENCE OF SOME SYNTHETIC PTERIDINES ON THE BIOSYNTHESIS OF 5-METHOXYINDOLES IN PINEALS OF RATS / Ebels, I. / Noteborn, H. P. J. M. / Morée, A. de -- PTERIDINES IN BLOOD CELLS AND PLASMA / Zeitler, Hans-Jörg / Andondonskaja-Renz, Berta / Fink, Michael / Wilmanns, Wolfgang -- 2. BIOCHEMISTRY AND METABOLISM OF PTERIDINES -- PTERIDINE CATABOLISM / Rembold, Heinz -- STUDIES ON THE BIOSYNTHESIS OF TETRAHYDROBIOPTERIN IN BOVINE ADRENAL MEDULLA PREPARATIONS / Smith, Gary K. / Nichol, Charles A. -- DIHYDROFOLATE REDUCTASE CATALYZES THE REDUCTION OF 7,8-DIHYDROBIOPTERIN IN LIVER AND BRAIN / Milstien, Sheldon / Kaufman, Seymour -- INHIBITION OF DIHYDROPTERIDINE REDUCTASE BY PTERIDINES, MONOAMINES AND METALLIC COMPOUNDS / Dhondt, Jean-Louis / Bellahsene, Zina -- THERAPEUTIC POTENTIAL OF 6,6-DISUBSTITUTED PTERIDINES / Ayling, June E. / Bailey, Steven W. -- 3. PTERIDINES IN IMMUNOLOGY -- GUANOSINE - TRIPHOSPHATE CYCLOHYDROLASE - DEFICIENCY : ANALYSIS OF THE INFLUENCE ON IMMUNE PARAMETERS IN A GIRL / Joller, Peter W. / Blau, Nenad / Atares, Manuel / Niederwieser, Alois / Cardesa-Garcia, J. -- PTERIDINES IN THE ASSESSMENT OF LYMPHOCYTE ACTIVATION / Huber, Chistoph / Niederwieser, Dietger / Schönitzer, Dieter / Fuchs, Dietmar / Hausen, Arno / Knosp, Olga / Reibnegger, Gilbert / Wachter, Helmut -- PTERINS AS FUNCTIONING CONSTITUENTS OF THE LYMPHOKI NE SYSTEM / Ziegler, Irmgard / Hamm, Ulrike / Berndt, Jürgen -- NEOPTERIN EXCRETION DURING ALLOGENEIC, SYNGENEIC AND AUTOLOGOUS BONE MARROW TRANSPLANTATION / Niederwieser, D. / Huber, Ch. / Gratwohl, A. / Bannerth, P. / Speck, D. / Fuchs, D. / Hausen, A. / Reibnegger, G. / Wächter, H. -- CHEMICAL DIVERSITY AND LYMPHOCYTE STIMULATING PROPERTIES OF APTERIDINE - BINDING VARIANT OF ALPHA1 - ACID GLYCOPROTEIN AND ITS DIAGNOSTIC APPLICATION / Ziegle, Irmgard / Fink, Michael -- NEOPTERIN AS INDEX FOR ACTIVITY OF DISEASE IN PATIENTS WITH RHEUMATOID ARTHRITIS NEOPTERIN AS INDEX FOR ACTIVITY OF DISEASE IN PATIENTS WITH RHEUMATOID ARTHRITIS / Hausen, Arno / Fuchs, Dietmar / Reibnegger, Gilbert / Wächter, Helmut / Egg, Dietmar / Günther, Robert -- 4. PTERIDINES IN CANCER AND OTHER DISEASES -- URINARY NEOPTERIN IEVEIfi IN PATIENTS WITH MALIGNANT TOMDRS OF THE GENITOURINARY TRACT / Aulitzky, Wolfgang / Frick, Julian / Fuchs, Dietmar / Hausen, Arno / Reibnegger, Gilbert / Wächter, Helmut -- THE CLINICAL SIGNIFICANCE OF NEOPTERIN SAMPLING IN THE FOLLOWUP OF PATIENTS WITH GENITAL CANCER / Hetzel, Heinz / Bichler, Alfred / Marth, Christian / Fuchs, Dietmar / Hausen, Arno / Reibnegger, Gilbert / Wächter, Helmut -- NEOPTERIN EVALUATION IN PATIENTS SUFFERING FROM PULMONARY TUBERCULOSIS / Fuchs, Dietmar / Hausen, Arno / Knosp, Olga / Reibnegger, Gilbert / Wächter, Helmut / Kofler, Manfred / Kosanowsky, Hans / Huber, Christoph / Niederwieser, Dietger -- CONFIGURATION OF BIOPTERIN AND NEOPTERIN EXCRETED BY PATIENTS WITH VARIOUS DISEASES / Rokos, Hartmut / Rokos, Katharina / Ziegler, Irmgard -- 5. TETRAHYDROBIOPTERIN DEFICIENCIES, DIAGNOSIS AND THERAPY -- TETRAHYDROBIOPTERIN METABOLISM AND MENTAL DISEASE / Barford, P. A. / Blair, J. A. / Eggar, C. / Hamon, C. -- DIHYDROBIOPTERIN-SYNTHETASE DEFICIENCY / Dhondt, Jean-Louis / Farriaux, Jean-Pierre / Leroux, B. / Lyon, Ian -- RECENT ADVANCES IN TETRAHYDROBIOPTERIN BIOSYNTHESIS AND THE TREATMENT OF HUMAN DISEASE / Levine, Robert A. / Heintel, Dorothee / Leimbacher, Walter / Niederwieser, Alois / Curtiu, Hans-Christoph / Ghisla, Sandro -- 6. FOLATE QUEUOSINE AND ACRASIN -- ROLE OF THYROXINE IN REGULATION OF FOLIC ACID METABOLISM / Stokstad, E. L. Robert / Chan, Margaret M-S / Watson, Joe E. / Urban, Gabriela -- INTRACELLULAR FOLATE CONCENTRATION AND GROWTH RATE IN FOLATE-DEPLETED K562 HUMAN LEUKEMIA CELLS / Watkins, David / Shapiro, Thomas E. / Cooper, Bernard A. -- QUEUOSINE IN TRANSFER-RNA IN RELATION TO DIFFERENTIATION AND PTERIDINE METABOLISM / Kersten, Helga / Schachner, Elfriede / Dess, Gerlinde / Anders, Annerose / Nishimura, Susumu / Shindo-Okada, Nobuko -- PTERINS AND FOLATES AS EXTRACELLULAR SIGNALS FOR CHEMOTAXIS AND DIFFERENTIATION IN THE CELLULAR SLIME MOLDS / De Wit, René J. W. / Konijn, Theo M. -- AUTHOR INDEX -- SUBJECT INDEX -- Backmatter