Helmut Wachter
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Helmut Wachter's Degrees
- PhD Immunology University of Vienna
- Doctorate Medicine University of Vienna
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(Suggest an Edit or Addition)Helmut Wachter's Published Works
Number of citations in a given year to any of this author's works
Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author
Published Works
- Immune response-associated production of neopterin. Release from macrophages primarily under control of interferon-gamma (1984) (1107)
- Neopterin as a marker for activated cell-mediated immunity: application in HIV infection. (1988) (599)
- Iron regulates nitric oxide synthase activity by controlling nuclear transcription (1994) (417)
- Simultaneous measurement of serum tryptophan and kynurenine by HPLC. (1997) (413)
- Neopterin as marker for activation of cellular immunity: immunologic basis and clinical application. (1989) (400)
- Brain nitric oxide synthase is a biopterin‐ and flavin‐containing multi‐functional oxido‐reductase (1991) (378)
- Translational regulation via iron‐responsive elements by the nitric oxide/NO‐synthase pathway. (1993) (369)
- The role of neopterin as a monitor of cellular immune activation in transplantation, inflammatory, infectious, and malignant diseases. (1992) (324)
- Soluble receptors for tumour necrosis factor in clinical laboratory diagnosis (1995) (306)
- Tetrahydrobiopterin-dependent formation of nitrite and nitrate in murine fibroblasts (1990) (283)
- Pteridine biosynthesis in human endothelial cells. Impact on nitric oxide-mediated formation of cyclic GMP. (1993) (280)
- Protein kinase C-theta isoenzyme selective stimulation of the transcription factor complex AP-1 in T lymphocytes (1996) (278)
- Tetrahydrobiopterin biosynthetic activities in human macrophages, fibroblasts, THP-1, and T 24 cells. GTP-cyclohydrolase I is stimulated by interferon-gamma, and 6-pyruvoyl tetrahydropterin synthase and sepiapterin reductase are constitutively present. (1990) (253)
- Importance of vpr for infection of rhesus monkeys with simian immunodeficiency virus (1993) (221)
- Decreased serum tryptophan in patients with HIV-1 infection correlates with increased serum neopterin and with neurologic/psychiatric symptoms. (1990) (221)
- Neopterin, biochemistry and clinical use as a marker for cellular immune reactions. (1993) (221)
- Linkage of cell-mediated immunity to iron metabolism. (1995) (212)
- Characteristics of interferon induced tryptophan metabolism in human cells in vitro. (1989) (203)
- Parallel induction of tetrahydrobiopterin biosynthesis and indoleamine 2,3-dioxygenase activity in human cells and cell lines by interferon-gamma. (1989) (200)
- Determination of neopterin in serum and urine. (1987) (195)
- Neopterin modulates toxicity mediated by reactive oxygen and chloride species (1993) (194)
- Human macrophages degrade tryptophan upon induction by interferon-gamma. (1987) (192)
- Neopterin as a new biochemical marker for diagnosis of allograft rejection. Experience based upon evaluation of 100 consecutive cases. (1983) (161)
- Pteridines as a new marker to detect human T cells activated by allogeneic or modified self major histocompatibility complex (MHC) determinants. (1983) (159)
- Tetrahydrobiopterin-dependent formation of endothelium-derived relaxing factor (nitric oxide) in aortic endothelial cells. (1992) (154)
- Decreased plasma tryptophan in pregnancy (1996) (142)
- Immune activation and the anaemia associated with chronic inflammatory disorders (1991) (139)
- Iron modulates interferon-gamma effects in the human myelomonocytic cell line THP-1. (1992) (134)
- Increased concentrations of neopterin in carotid atherosclerosis. (1994) (133)
- Increased endogenous interferon-gamma and neopterin correlate with increased degradation of tryptophan in human immunodeficiency virus type 1 infection. (1991) (131)
- Neopterin as a marker for activated cell-mediated immunity: application in malignant disease. (1991) (130)
- Urinary neopterin reflects clinical activity in patients with rheumatoid arthritis. (1986) (129)
- Interferon-gamma concentrations are increased in sera from individuals infected with human immunodeficiency virus type 1. (1989) (127)
- Tumour necrosis factor-alpha and lipopolysaccharide enhance interferon-induced tryptophan degradation and pteridine synthesis in human cells. (1989) (124)
- Neopterin concentrations in cerebrospinal fluid and serum of individuals infected with HIV-1. (1989) (121)
- Determination of neopterine in human urine by reversed-phase high-performance liquid chromatography. (1982) (116)
- Neopterin formation and tryptophan degradation by a human myelomonocytic cell line (THP-1) upon cytokine treatment. (1990) (113)
- Neopterin as a prognostic indicator in patients with carcinoma of the uterine cervix. (1986) (112)
- Neopterin as a predictive marker for disease progression in human immunodeficiency virus type 1 infection. (1989) (107)
- Association between immune activation, changes of iron metabolism and anaemia in patients with HIV infection (1993) (105)
- Immune activation and decreased tryptophan in patients with HIV-1 infection. (1990) (103)
- Neopterin : biochemistry, methods, clinical application (1992) (103)
- Endogenous release of interferon-gamma and diminished response of peripheral blood mononuclear cells to antigenic stimulation. (1989) (102)
- Decreased plasma concentrations of HDL cholesterol in HIV-infected individuals are associated with immune activation. (1994) (102)
- Simultaneous determination of neopterin and creatinine in serum with solid-phase extraction and on-line elution liquid chromatography. (1987) (102)
- Tetrahydrobiopterin and Cytokines (1993) (97)
- Clinical significance of neopterin for prognosis and follow-up in ovarian cancer. (1987) (96)
- Rapid development of vaccine protection in macaques by live-attenuated simian immunodeficiency virus. (1996) (93)
- Neural networks as a tool for utilizing laboratory information: comparison with linear discriminant analysis and with classification and regression trees. (1991) (87)
- Induction of inducible nitric oxide synthase expression by neopterin in vascular smooth muscle cells (1995) (87)
- Serum soluble markers of immune activation and disease activity in systemic lupus erythematosus (1995) (87)
- Identification of the 4-amino analogue of tetrahydrobiopterin as a dihydropteridine reductase inhibitor and a potent pteridine antagonist of rat neuronal nitric oxide synthase. (1996) (85)
- Predictive value of interleukin-6 and neopterin in patients with multiple myeloma. (1991) (85)
- Approach to define “normal aging” in man. Immune function, serum lipids, lipoproteins and neopterin levels (1988) (85)
- HIV and HIV-infected cells differentially activate the human complement system independent of antibody. (1989) (82)
- Tryptophan degradation in patients infected by human immunodeficiency virus. (1988) (82)
- Cerebrospinal fluid neopterin concentrations in central nervous system infection. (1993) (81)
- Effect of neopterin and 7,8‐dihydroneopterin on tumor necrosis factor‐α induced programmed cell death (1995) (81)
- Neopterin and 7,8‐dihydroneopterin induce apoptosis in the rat alveolar epithelial cell line L2 (1996) (80)
- Cigarette Smoking: A Modifier of Human Immunodeficiency Virus Type 1 Infection? (1991) (76)
- Complement‐mediated enhancement of HIV‐1 infection of the monoblastoid cell line U937 (1990) (75)
- Chronic immune stimulation, oxidative stress, and apoptosis in HIV infection. (1997) (75)
- Correlation between neopterin, interferon‐gamma and haemoglobin in patients with haematological disorders (1990) (74)
- Neopterin and prognosis in patients with adenocarcinoma of the colon. (1993) (72)
- Neopterin activates transcription factor nuclear factor‐κB in vascular smooth muscle cells (1996) (72)
- NITRIC OXIDE FORMATION AS PREDICTIVE PARAMETER FOR ACUTE GRAFT‐VERSUS-HOST DISEASE AFTER HUMAN ALLOGENEIC BONE MARROW TRANSPLANTATION (1995) (69)
- Increased serum concentrations of soluble tumor necrosis factor receptors in HIV-infected individuals are associated with immune activation. (1994) (68)
- 7,8 Dihydroneopterin inhibits low density lipoprotein oxidation in vitro. Evidence that this macrophage secreted pteridine is an anti-oxidant. (1995) (67)
- Urinary neopterin concentrations vs total neopterins for clinical utility. (1989) (67)
- NEOPTERIN AS A NEW BIOCHEMICAL MARKER IN THE CLINICAL MONITORING OF BONE MARROW TRANSPLANT RECIPIENTS (1984) (67)
- Urinary neopterin is elevated in patients with malaria. (1984) (67)
- [Increased urinary excretion of neopterin in patients with malignant tumors and with virus diseases (author's transl)]. (1979) (63)
- Differential patterns of serum biomarkers of immune activation in human T-cell lymphotropic virus type I-associated myelopathy/tropical spastic paraparesis, and adult T-cell leukemia/lymphoma. (1996) (63)
- Markers of immune stimulation in the cerebrospinal fluid during HIV infection: a longitudinal study. (1994) (60)
- Immunologic markers of progression to acquired immunodeficiency syndrome are time-dependent and illness-specific. (1992) (59)
- Elevated urinary neopterin levels in patients with the acquired immunodeficiency syndrome (AIDS). A preliminary report. (1983) (57)
- Immunization with tween-ether-treated SIV adsorbed onto aluminum hydroxide protects monkeys against experimental SIV infection. (1992) (56)
- Increased immune activation during and after physical exercise. (1993) (55)
- Neopterin as a new biochemical marker in the clinical assessment of ulcerative colitis. (1985) (55)
- Neopterin: a predictive marker of acquired immune deficiency syndrome in human immunodeficiency virus infection. (1989) (54)
- Neopterin--its clinical use in urinalysis. (1994) (54)
- Tumor necrosis factor alpha and soluble tumor necrosis factor receptors in individuals with human immunodeficiency virus infection. (1994) (54)
- Urinary neopterin, a marker of clinical activity in patients with Crohn's disease. (1986) (52)
- Immunomodulatory therapy with thymopentin and indomethacin. Successful restoration of interleukin-2 synthesis in patients undergoing major surgery. (1991) (52)
- COMPLEMENT RECEPTORS: ANOTHER PORT OF ENTRY FOR HIV (1989) (52)
- Pteridine biosynthesis and nitric oxide synthase in Physarum polycephalum. (1994) (51)
- Neopterin derivatives together with cyclic guanosine monophosphate induce c‐fos gene expression (1994) (51)
- Urinary neopterine as marker for haematological neoplasias. (1981) (51)
- Urinary neopterin levels in acute viral hepatitis (1988) (51)
- Impact of tumour necrosis factor-alpha and interferon-gamma on tetrahydrobiopterin synthesis in murine fibroblasts and macrophages. (1991) (49)
- Biochemistry and function of pteridine synthesis in human and murine macrophages. (1991) (49)
- Immune activation markers to predict AIDS and survival in HIV-1 seropositives. (1990) (49)
- Weight loss in patients with hematological neoplasias is associated with immune system stimulation (2004) (48)
- Increased serum neopterin in patients with HIV‐1 infection is correlated with reduced in vitro interleukin‐2 production (1990) (48)
- Selective induction of mononuclear phagocytes to produce neopterin by interferons. (1988) (48)
- Factors influencing serum neopterin and β2-microglobulin levels in a healthy diverse population (1994) (47)
- Serum HIV–1 RNA Levels Compared to Soluble Markers of Immune Activation to Predict Disease Progression in HIV–1–Infected Individuals (1998) (46)
- Biosynthesis of nitric oxide: dependence on pteridine metabolism. (1996) (46)
- Reactive Oxygen and Apoptosis (1997) (46)
- Significance of urinary neopterin in patients with malignant tumors of the genitourinary tract (1985) (46)
- Nocturnal sleep EEG in patients with HIV infection (1991) (45)
- Serum concentrations of neopterin, soluble interleukin 2 receptor, and soluble tumor necrosis factor receptor in Wegener's granulomatosis. (1997) (44)
- Association between the activation of macrophages, changes of iron metabolism and the degree of anaemia in patients with malignant disorders (1992) (43)
- Effects of pteridines on luminol-dependent chemiluminescence induced by chloramine-T. (1995) (43)
- Neopterin and soluble tumor necrosis factor receptor type I in alcohol‐induced cirrhosis (1995) (42)
- Interferon-gamma-induced degradation of tryptophan by human cells in vitro. (1987) (42)
- Serum nitrite plus nitrate in infection with human immunodeficiency virus type-1. (1995) (42)
- Neopterin, β2-Microglobulin, and Acute Phase Proteins in HIV-1-Seropositive and -Seronegative Zambian Patients with Tuberculosis (1997) (40)
- Urinary neopterin concentrations in rhesus monkeys after infection with simian immunodeficiency virus (SIVmac 251). (1989) (40)
- Neopterin as an index of immune response in patients with tuberculosis (2007) (40)
- Ca2+/calmodulin-dependent nitric oxide synthase activity in the human cervix carcinoma cell line ME-180. (1993) (40)
- Commercial enzyme-linked immunosorbent assay for neopterin detection in blood donations compared with RIA and HPLC. (1994) (39)
- Markers for disease progression in intravenous drug users infected with HIV-1. (1991) (39)
- Differential regulation of inducible nitric oxide synthase production in bovine and caprine macrophages. (1996) (39)
- Weight loss in HIV‐1 infection is associated with immune activation (1993) (39)
- Geography of medical publication (1993) (39)
- POTENTIAL OF URINARY NEOPTERIN EXCRETION IN DIFFERENTIATING CHRONIC NON-A, NON-B HEPATITIS FROM FATTY LIVER (1987) (38)
- N eopterin: Indicator of Oxidative Stress and Part of the Cytotoxic Armature of Activated Macrophages in Humans (1998) (37)
- Neopterin estimation compared with the ratio of T-cell subpopulations in persons infected with human immunodeficiency virus-1. (1988) (37)
- Neopterin in Clinical Use (1989) (36)
- Effects of neopterin-derivatives on H2O2-induced luminol chemiluminescence: mechanistic aspects. (1996) (36)
- The dependence of cell-mediated immune activation in malaria on age and endemicity. (1987) (35)
- Tryptophan concentrations increase in cerebrospinal fluid and blood after zidovudine treatment in patients with HIV type 1 infection. (1994) (35)
- URINARY NEOPTERIN EXCRETION IN COELIAC DISEASE (1983) (35)
- Neopterin production in acute schizophrenic patients: An indicator of alterations of cell-mediated immunity (1992) (35)
- Value of urinary neopterin in the differential diagnosis of bacterial and viral infections (1990) (34)
- Serum kynurenine and neopterin concentrations in patients with cardiomyopathy. (1992) (34)
- Urinary neopterine in the assessment of lymphoid and myeloid neoplasia, and neopterine levels in haemolytic anaemia and benign monoclonal gammopathy. (1982) (34)
- T-cell activation, expression of adhesion molecules and response to ethanol in alcoholic cirrhosis. (1996) (34)
- Neopterin activates transcription factor nuclear factor-kappa B in vascular smooth muscle cells. (1996) (34)
- Serum-soluble receptors for tumor necrosis factor-alpha and interleukin-2, and neopterin in acute rheumatic fever. (1995) (33)
- Elevated concentrations of circulating intercellular adhesion molecule 1 (ICAM-1) in HIV-1 infection. (1993) (33)
- 2,4‐diamino‐6‐hydroxypyrimidine, an inhibitor of tetrahydrobiopterin synthesis, downregulates the expression of iNOS protein and mRNA in primary murine macrophages (1995) (33)
- Patterns of serological markers for cellular immune activation in patients with dilated cardiomyopathy and chronic myocarditis. (1992) (32)
- Interleukin 1 beta and cAMP trigger the expression of GTP cyclohydrolase I in rat renal mesangial cells. (1996) (32)
- WHO WILL GET AIDS? (1986) (31)
- Neopterin–Induced Tumor Necrosis Factor–· Synthesis in Vascular Smooth Muscle Cells in vitro (1998) (31)
- Detection of bacterial pyrogens on the basis of their effects on gamma interferon-mediated formation of neopterin or nitrite in cultured monocyte cell lines (1995) (31)
- Reactivation of human immunodeficiency virus type 2 in macaques after simian immunodeficiency virus SIVmac superinfection (1995) (30)
- Attenuated SIV imparts immunity to challenge with pathogenic spleen-derived SIV but cannot prevent repair of the nef deletion. (1996) (30)
- Neopterin Plasma Concentrations Predict the Course of Severe Acute Pancreatitis (1998) (30)
- Neopterin Production and Tryptophan Degradation in Acute Lyme Neuroborreliosis Versus Late Lyme Encephalopathy (1994) (30)
- Changes of serum neopterin, beta 2-microglobulin and interferon-gamma in patients with chronic hepatitis C treated with interferon-alpha 2b. (1992) (30)
- Serum soluble tumour necrosis factor receptor 55 is increased in patients with haematological neoplasias and is associated with immune activation and weight loss. (1993) (29)
- A simple index relating clinical activity in Crohn's disease with T cell activation: hematocrit, frequency of liquid stools and urinary neopterin as parameters. (1986) (29)
- Effect of pteridine derivatives on intracellular calcium concentration in human monocytic cells (1993) (29)
- ENVELOPE GENE-DERIVED RECOMBINANT PEPTIDE IN THE SERODIAGNOSIS OF HUMAN IMMUNODEFICIENCY VIRUS INFECTION (1986) (29)
- Systemic immune activation as a potential determinant of wasting in Zambians with HIV-related diarrhoea. (1996) (29)
- Expression of the C3d/EBV receptor and of other cell membrane surface markers is altered upon HIV-1 infection of myeloid, T, and B cells. (1990) (28)
- Increased peripheral mononuclear cells expression of adhesion molecules in alcoholic cirrhosis: its relation to immune activation. (1997) (28)
- AUTOMATIZED ROUTINE ESTIMATION OF NEOPTERIN IN HUMAN URINE BY HPLC ON REVERSED PHASE (1982) (28)
- Role of 7,8-dihydroneopterin in T-cell apoptosis and HTLV-1 transcription in vitro. (1996) (28)
- Neopterin Levels and Pulmonary Tuberculosis in Infants (1998) (28)
- Neopterin, a marker of cell-mediated immune activation in human pregnancy. (1991) (28)
- Lymphocyte subsets and β2‐microglobulin expression in chronic hepatitis C/non‐A, non‐B. Effects of interferon‐alpha treatment (1992) (27)
- Reducing HIV transmission by seronegative blood (1992) (27)
- Inhibition of xanthine oxidase by pterins. (1998) (27)
- Neopterin-induced Suppression of Erythropoietin Production In Vitro (1995) (27)
- Negative correlation between blood cell counts and serum neopterin concentration in patients with HIV-1 infection. (1991) (26)
- Is schizophrenia linked to alteration in cellular immunity? (1989) (26)
- Coinduction of nitric oxide synthesis and intracellular nonheme iron-nitrosyl complexes in murine cytokine-treated fibroblasts. (1994) (26)
- Antigen detection in primary HIV infection (1988) (26)
- Neopterin levels in long-term hemodialysis. (1988) (26)
- Oxidative stress and apoptosis. (1994) (26)
- Pteridines in the Assessment of Neoplasia (1982) (26)
- Anti-viral antibodies in HIV (HTLV-III) infection possess auto-antibody activity against a CH1 domain determinant in human IgG: possible immunological consequences. (1989) (26)
- Trends in HIV infection among intravenous drug users in Innsbruck, Austria. (1992) (26)
- The role of neopterin in assessing disease activity in Crohn's disease: classification and regression trees. (1993) (25)
- Neopterin excretion after liver transplantation and its value in differential diagnosis of complications. (1989) (25)
- Neopterin levels correlating with the Walter Reed staging classification in human immunodeficiency virus (HIV) infection. (1987) (25)
- Neopterin levels during acute rubella in children. (1993) (24)
- Role of neopterin and 7,8-dihydroneopterin in human immunodeficiency virus infection: marker for disease progression and pathogenic link. (1996) (24)
- The prognostic value of nuclear roundness and neopterin in ovarian cancer. (1993) (24)
- ARE CONDITIONS LINKED WITH T-CELL STIMULATION NECESSARY FOR PROGRESSIVE HTLV-III INFECTION? (1986) (24)
- HIGH FREQUENCY OF HTLV-III ANTIBODIES AMONG HETEROSEXUAL INTRAVENOUS DRUG ABUSERS IN THE AUSTRIAN TYROL (1985) (24)
- Proposed World-Health-Organization Staging System for Hiv-Infection and Disease - Preliminary Testing by An International Collaborative Cross-Sectional Study (1992) (24)
- Measurement of urinary neopterin in normal pregnant and non-pregnant women and in women with benign and malignant genital tract neoplasms (2005) (24)
- Serum neopterin, beta2-microglobulin, soluble interleukin-2 receptors, and immunoglobulin levels in healthy adolescents. (1998) (23)
- Elevated serum levels of neopterin in adult patients with polymyositis/dermatomyositis. (1997) (23)
- Blood donations and viruses (1997) (23)
- Rat GTP cyclohydrolase I is a homodecameric protein complex containing high-affinity calcium-binding sites. (1998) (23)
- Cerebrospinal fluid and serum neopterin levels in patients with Lyme neuroborreliosis (1990) (22)
- Enhanced urinary excretion of 7,8-dihydro-6-hydroxylumazine by mice bearing the Ehrlich ascites tumour. (1979) (22)
- Determination of tetrahydrobiopterin biosynthetic activities by high-performance liquid chromatography with fluorescence detection. (1997) (22)
- Comparison of Western blot (immunoblot) based on recombinant-derived p41 with conventional tests for serodiagnosis of human immunodeficiency virus infections (1988) (22)
- trans-Activation of the HIV type 1 promoter by 7,8-dihydroneopterin in vitro. (1997) (22)
- Urinary neopterin excretion in pulmonary sarcoidosis: correlation to clinical course of the disease. (1988) (22)
- Increased CSF neopterin levels in subarachnoid hemorrhage. (1990) (22)
- Serum tryptophan, kynurenine, and neopterin in patients with Guillain-Barre-syndrome (GBS) and multiple sclerosis (MS). (1996) (22)
- Increased concentrations of soluble tumor necrosis factor receptor 75 but not of soluble intercellular adhesion molecule-1 are associated with the decline of CD4+ lymphocytes in HIV infection. (1994) (22)
- In vivo activation of CD4+ cells in AIDS. (1987) (22)
- NEOPTERIN IN CLINICAL MEDICINE (1988) (21)
- Distinct distributions of D-erythro-neopterin in arteries and veins and its recovery by an enterohepatic circulation. (1992) (21)
- Amyotrophic lateral sclerosis an enigmatic disease with B-cellular and anti-retroviral immune responses. (1993) (20)
- Neopterin, a biochemical indicator of cellular immune reactions, in the detection and control of patients with neoplastic diseases. (1985) (20)
- Induction of indoleamine 2,3-dioxygenase in human cells in vitro. (1991) (19)
- Urinary neopterine excretion in patient with genital cancer. (1982) (19)
- Differential effect of dexamethasone on interleukin 1β‐ and cyclic AMP‐triggered expression of GTP cyclohydrolase I in rat renal mesangial cells (1997) (19)
- High-performance liquid chromatographic methods for the quantification of tetrahydrobiopterin biosynthetic enzymes. (1996) (19)
- Urinary Neopterin as a Prognostic Factor in Haematological Neoplasias (1989) (18)
- Oxidative Stress and Apoptosis in HIV Infection (1996) (18)
- Theoretical implications of cellular immune reactions against helper lymphocytes infected by an immune system retrovirus. (1987) (18)
- Nitric oxide synthase and antimicrobial armature of human macrophages. (1994) (18)
- HIV INFECTION IN RENAL ALLOGRAFT RECIPIENTS (1986) (18)
- Urinary excretion of porphyrins is increased in patients with HIV-1 infection. (1990) (17)
- Neopterin and beta 2-microglobulin as prognostic indices in human immunodeficiency virus type 1 infection. (1991) (17)
- Stimulated Cellular Immune System in Patients with Congestive Heart Failure (1993) (17)
- Influence of interferon-gamma and extracellular tryptophan on indoleamine 2,3-dioxygenase activity in T24 cells as determined by a non-radiometric assay. (1988) (17)
- Comparative Effects of Heme and Metalloporphyrins on Interferon-γ-Mediated Pathways in Monocytic Cells (THP-1) (1993) (17)
- Synthesis and characterization of 3H-labelled tetrahydrobiopterin. (1994) (17)
- Mechanism of defective NK cell activity in patients with AIDS and AIDS-related complex. (1987) (16)
- Serum concentrations of interferon gamma, interleukin-6 and neopterin in patients with infectious mononucleosis and other Epstein-Barr virus-related lymphoproliferative diseases (1993) (16)
- Self-Organizing Neural Networks as a Means of Cluster Analysis in Clinical Chemistry (1993) (16)
- Anti-HIV-1 antibodies, anti-HTLV-I antibodies and neopterin levels in parenteral drug addicts in the Austrian Tyrol. (1988) (15)
- Association between serum neopterin concentrations and in vitro replicative capacity of HIV-1 isolates. (1989) (15)
- Activated cellular immunity and decreased serum tryptophan in healthy pregnancy. (1996) (15)
- An evaluation of low‐cost progression markers in HIV‐1 seropositive Zambians (2000) (15)
- Increased prevalence of IgM antibodies to Epstein-Barr virus and parvovirus B19 in blood donations with above-normal neopterin. (1994) (15)
- On multiple forms of NO synthase and their occurrence in human cells. (1991) (15)
- A note on the low-dimensional display of multivariate data using neural networks. (1993) (15)
- [Pteridine secretion as a marker for the proliferation of alloantigen-induced lymphocytes (author's transl)]. (1982) (15)
- ARE HOMOSEXUALS LESS AT RISK OF AIDS THAN INTRAVENOUS DRUG ABUSERS AND HAEMOPHILIACS? (1985) (15)
- Diatomaceous earth lowers blood cholesterol concentrations. (1998) (15)
- Correlation of ribonucleic acid polymerase chain reaction, acid dissociated p24 antigen, and neopterin with progression of disease. A retrospective, longitudinal study of vertically acquired human immunodeficiency virus type 1 infection in children. (1997) (14)
- Recombinant peptides derived from the env-gene of HIV-2 in the serodiagnosis of HIV-2 infections. (1989) (14)
- Anemia of chronic disease: a misnomer? (1992) (14)
- Biliary and urinary neopterin concentrations in monitoring liver-allograft recipients. (1993) (14)
- Stability analysis of simple models for immune cells interacting with normal pathogens and immune system retroviruses. (1989) (14)
- Serum neopterin concentrations in Wegener's granulomatosis correlate with vasculitis activity. (1995) (14)
- Quantitation of urinary uric acid by reversed-phase liquid chromatography. (1981) (13)
- Immunosuppressants in patients with AIDS (1986) (13)
- Modulation of nitric oxide synthase activity in intact cells by intracellular tetrahydrobiopterin levels. (1993) (13)
- Tumor-associated antigen 90K activates myelomonocytic cell line THP-1. (1996) (13)
- Neopterin screening and acute cytomegalovirus infections in blood donors (2004) (13)
- Increased neopterin concentration in saliva of patients with HIV-1 infection. (1990) (13)
- Increased levels of serum intercellular adhesion molecule 1 in HIV infection are related to immune activation. (1993) (12)
- Low haemoglobin in haemophilia children is associated with chronic immune activation. (1991) (12)
- Neopterin as a marker in HIV infection. (1988) (12)
- Neopterin and viral infections: diagnostic potential in virally induced liver disease. (1989) (12)
- NEOPTERIN AS INDEX FOR ACTIVITY OF DISEASE IN PATIENTS WITH RHEUMATOID ARTHRITIS NEOPTERIN AS INDEX FOR ACTIVITY OF DISEASE IN PATIENTS WITH RHEUMATOID ARTHRITIS (1983) (12)
- SEROLOGICAL DISCRIMINATION BETWEEN HIV-1 AND HIV-2 (1988) (12)
- Beta 2-microglobulin and immune activation. (1989) (12)
- [Serum neopterin determination for the additional safeguarding of blood transfusions. Our experiences with 76,587 blood donors]. (1989) (12)
- RETROVIRAL INFECTIONS (HIV-1, HIV-2, AND HTLV-I) IN RURAL NORTHWESTERN TANZANIA CLINICAL FINDINGS, EPIDEMIOLOGY, AND ASSOCIATION WITH INFECTIONS COMMON EN AFRICACLINICAL FINDINGS, EPIDEMIOLOGY, AND ASSOCIATION WITEI INFECTIONS COMMON IN AFRICA (1989) (12)
- Tetrahydrobiopterin biosynthesis inhibition for diminishing nitric oxide production in cytokine-mediated septic shock. (1992) (12)
- Early changes of neopterin concentrations during treatment of human immunodeficiency virus infection with zidovudine. (1992) (12)
- Neopterin-induced tumor necrosis factor-alpha synthesis in vascular smooth muscle cells in vitro. (1998) (12)
- Comparison of serum and urine neopterin concentrations in patients with HIV-1 infection. (1990) (11)
- 6-Pyruvoyl tetrahydropterin synthase assay in extracts of cultured human cells using high-performance liquid chromatography with fluorescence detection of biopterin. (1991) (11)
- Pteridine excretion from cells as indicator of cell proliferation (1980) (11)
- The value of urinary neopterin as an immunological parameter in patients with malignant tumors of the genitourinary tract. (1985) (11)
- Neopterin derivatives to activate NF-kappa B. (1997) (11)
- Increased serum neopterin concentrations in a patient with Creutzfeldt-Jakob disease. (1996) (11)
- Cellular immune activation in the brain and human immunodeficiency virus infection (1988) (11)
- Neopterin and β2-microglobulin as prognostic indices in human immunodeficiency virus type 1 infection (2005) (10)
- Correlation of body mass index with urinary neopterin in individuals infected with human immunodeficiency virus. (1994) (10)
- Increased interferon-gamma and neopterin concentrations in patients with acute brucellosis. (1993) (10)
- Urinary neopterin in the diagnosis and follow-up of neoplasia: a biochemical parameter to detect cell-mediated immune response. (1984) (10)
- PTERIDINES RELEASED FROM DICTYOSTELIUM DISCOIDEUM CELLS INTO THE EXTRACELLULAR MEDIUM (1982) (10)
- Urinary neopterin excretion in patients with uterine sarcomas (1990) (10)
- Stimulation of tetrahydrobiopterin synthesis by cytokines in human and in murine cells. (1993) (10)
- Urinary low molecular weight products in neoplasia. (1971) (10)
- Significance of urinary neopterine in gynecological oncology: follow-up of patients with ovarian cancer. (1983) (10)
- ACTIVATED MACROPHAGES AND CANCER (1987) (10)
- Streptococcal erythrogenic toxins induce tryptophan degradation in human peripheral blood mononuclear cells. (1997) (10)
- [Activated macrophages in the pathologic mechanism of pregnancy-induced hypertension]. (1994) (10)
- Prevalence of antibodies to human herpesvirus 6 in human immunodeficiency virus 1-seropositive and -negative intravenous drug addicts. (1989) (10)
- Levels of CD4+ Lymphocytes, Neopterin, and β2-Microglobulin Are Early Predictors of Acquired Immunodeficiency Syndrome (1990) (10)
- Reduction of Ferric Iron by 7,8-Dihydroneopterin (1990) (9)
- Temporal variability in immunological parameters: Peripheral blood mononuclear cell subsets, serum immunoglobulins, and soluble markers of immune system activation (1997) (9)
- Mode of delivery in HIV-1-infected women (1992) (9)
- Is neopterin--a marker of cell mediated immune response--helpful in classifying leprosy? (1986) (9)
- Course of Immune Activation Markers in Patients after Severe Multiple Trauma (1990) (9)
- High stored iron levels and the risk of myocardial infarction. (1993) (9)
- Immunization of rhesus monkeys with high- and low-dose Tween-ether-disrupted SIVMAC. (1992) (9)
- Effect of zidovudine on cerebrospinal fluid in patients with HIV infection and acute neurological disease. (1991) (9)
- Immune response associated production of neopterin release from macrophages under control of lymphokines (1985) (8)
- Psoriasis, gamma-interferon, and the acquired immunodeficiency syndrome. (1987) (8)
- Influence of Kynurenine, Neopterin, Noradrenaline and Pyridoxal-5-Phosphate on Cholesterol and Phospholipid Content and Phospholipid Biosynthesis in vitro (1993) (8)
- Self-organizing neural networks--an alternative way of cluster analysis in clinical chemistry. (1996) (8)
- Increased production of immune activation marker neopterin by colony‐stimulating factors in gynecological cancer patients (1994) (8)
- Twelfth International Winter-Workshop on Biochemical and Clinical Aspects of Pteridines (1993) (8)
- Individual probability for onset of full-blown disease in patients infected with human immunodeficiency virus type 1. (1991) (8)
- Colchicine derivatives inhibit neopterin production in human peripheral blood mononuclear cells (PBMC) (1997) (8)
- 7,8-Dihydroneopterin Upregulates Interferon-γ Promoterin T cells (1996) (8)
- SCREENING FOR TOXOPLASMOSIS IN PREGNANCY (1988) (8)
- Generalized likelihood ratio concept and logistic regression analysis for multiple diagnostic categories. (1989) (8)
- Interleukin-10 for common variable immunodeficiency (1993) (8)
- Postmortem evaluation of serum and urine neopterin concentrations. (1991) (8)
- Urinary Neopterin as Marker for Disease Activity in Children and Adolescents with Crohn’s Disease (1990) (8)
- Immune activation and psoriasis (1991) (8)
- NEOPTERIN EVALUATION IN PATIENTS SUFFERING FROM PULMONARY TUBERCULOSIS (1983) (7)
- Ab Initio Quantum Chemical Calculations on the Stability of Different Tautomers of 6- and 7-Phenacetyl Pterin (1993) (7)
- Plasma Nitrate and Pteridine Levels in Experimental Bacteremia in Baboons (1995) (7)
- Immune activation markers and CD4+ T-cell counts in HIV-infected intravenous drug users. (1992) (7)
- Postoperative delirium and plasma tryptophan (1991) (7)
- Determination of silicon in urine by inductive coupled plasma-optical emission spectroscopy. (1998) (7)
- Circulating gamma-interferon in patients with aplastic anemia. (1989) (7)
- Increase of tryptophan in serum and in cerebrospinal fluid of patients with HIV infection during zidovudine therapy. (1996) (7)
- Postmortem neopterin concentrations: Comparison of diagnoses with and without cellular immunological background (2005) (7)
- Inflammatory joint disease and HIV infection. (1988) (7)
- Allogeneic activation is increased during pregnancy. A risk factor in HIV infection? (1987) (7)
- Stimulation of IRE-BP activity of IRF by tetrahydrobiopterin and cytokine dependent induction of nitric oxide synthase. (1994) (7)
- Neopterin and Endogenous Interferon Gamma in Serum of Patients with Epstein-Barr Virus-associated Lymphoproliferative Diseases (1990) (7)
- Streptococcal erythrogenic toxins induce neopterin formation in human peripheral blood mononuclear cells but not in the human myelomonocytoma cell line THP-1. (1996) (7)
- HIV seroconversion in health care workers. (1987) (7)
- Pancreatic juice neopterin excretion--a reliable marker of pancreas allograft rejection. (1992) (7)
- [Cellular immunity in pregnancy-induced hypertensive diseases]. (1992) (7)
- [Systemic changes of the immune system in patients with Alzheimer's dementia]. (1998) (7)
- Cervical intraepithelial neoplasia is not associated with elevated serum neopterin levels. (1995) (6)
- Intrathecal immunoactivation in patients with HIV-1 infection is reduced by zidovudine but not by didanosine. (1996) (6)
- Serum neopterin in acute rheumatic fever. (1993) (6)
- Change in HIV-antibody seroprevalence rates in i.v. drug dependent prisoners. (1991) (6)
- Lack of nephrotoxic effects of the new quinolone antibacterial agent levofloxacin in rabbits. (1992) (6)
- Urinary neopterin excretion in patients with squamous carcinoma of the oral cavity. (1995) (6)
- Peak E contaminated L-tryptophan and immune activation (1991) (6)
- Distinct Neopterin Excretion Patterns after Vaccination (1990) (6)
- Inhibitory Cytokines in Patients with Anemia of Chronic Disorders (1994) (6)
- Correlation of Serum Interferon Gamma and Neopterin Concentrations in Africans with Various Diseases (1989) (6)
- Identification of 3-hydroxyanthranilic acid in mixed lymphocyte cultures. (1985) (6)
- Increased 7,8-dihydroneopterin and reduced methyl-group metabolism in HIV-1 infection (1990) (6)
- CELLULAR IMMUNE ACTIVATION AND ERYTHROPOIESIS IN GYNAECOLOGICAL CANCER (1989) (6)
- Urinary neopterin in the diagnosis of acquired immune deficiency syndrome (1984) (6)
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- Production and characterization of a monoclonal antibody against neopterin. (1990) (5)
- Applicability of an Enzyme-linked Immunosorbant Assay for Neopterin Detection for Screening of Blood Donations (1994) (5)
- Neopterin and psoriasis (1991) (5)
- Relationships between pteridine synthesis and tryptophan degradation. (1991) (5)
- Interferon Gamma-induced Formation of Neopterin and Degradation of Tryptophan in Cerebrospinal Fluid of Children with Meningitis but Not with Febrile Convulsions (1994) (5)
- Soluble Receptors for Tumor Necrosis Factor and Neopterin as Parameters of Cell-Mediated Immune Activation. (1996) (5)
- Pathogenesis of chronic fatigue syndrome. (1992) (5)
- Effect of interferon gamma on tryptophan and pteridine metabolism of human cells. (1988) (5)
- Interactions between immune activation cascades and biosynthesis of neurotransmitters. (1990) (5)
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- INTERFERON-GAMMA-INDUCED IN VITRO-EXCRETION OF NEOPTERIN AND 3-HYDROXYANTHRANILIC ACID BY HUMAN MACROPHAGES (1985) (4)
- Immune activation, impaired tryptophan metabolism, and neurologic/Psychiatric symptoms in HIV-infection (1992) (4)
- Neopterin release in human mixed lymphocyte culture: requirement of HLA-DR disparity. (1985) (4)
- Evaluation on HIV Serology and Immune-Stimulation on Patients in Tanzania (1991) (4)
- 7,8-Dihydroneopterin upregulates interferon-gamma promoter in T cells. (1996) (4)
- Cyclosporin A Treatment in Psoriasis: Monitoring by Neopterin Concentrations In Serum and Urine (1993) (4)
- PTERIDINES IN THE ASSESSMENT OF LYMPHOCYTE ACTIVATION (1982) (4)
- Measurement of urinary 7,8-dihydro-6-hydroxylumazine in healthy and in Ehrlich ascites tumour-bearing mice. (1984) (4)
- Urinary and pancreatic juice neopterin excretion after combined pancreas-kidney transplantation. (1992) (4)
- Assessment of Urinary Neopterin in the Early Diagnosis of Human Allograft Rejection (1983) (4)
- Immune activation and neuronal injury in AIDS (1992) (4)
- Conformational investigation of the cofactor (6R,1'R,2'S-)-5,6,7,8-tetrahydrobiopterin. (1995) (4)
- Immune activation and enhanced urinary zinc concentrations in allograft recipients. (1994) (4)
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- Neopterin levels in long-term renal allograft recipients. (1985) (4)
- Urinary neopterin in infants with primary immunodeficiency. (1988) (4)
- Effect of Sepiapterin, 7,8-Dihydrobiopterin, 5,6,7,8-Tetrahydrobiopterin and Xanthopterin on Cholesterol and Phospholipid Content and Phospholipid Biosynthesis in vitro (1995) (4)
- OUTCOME PREDICTION IN INTENSIVE CARE (1989) (4)
- Concentrations of neopterin in serum of recipients of renal allografts. (1989) (4)
- SIGNIFICANCE OF URINARY NEOPTERIN IN GYNECOLOGY AND OBSTETRICS: ONCOLOGY, PREGNANCY, AMNIOTIC FLUID (1982) (4)
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- Effect of D-penicillamine on the expression and propagation of the human immunodeficiency virus by H9 T-lymphoblastoid cells. (1989) (3)
- Longitudinal immunological follow-up of HIV infected haemophiliacs in Hungary. (1995) (3)
- Abstracts. Fourteenth International Winter-Workshop on Biochemical and Clinical Aspects of Pteridines (1995) (3)
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- Characterization of monoclonal antibodies to human immunodeficiency virus type 1 gp41 by HIV-1 polypeptides expressed in Escherichia coli. (1990) (3)
- Immune-mediated mechanisms in multiple sclerosis (1990) (3)
- Erythropoietin and decreased erythropoiesis in pregnancy. (1992) (3)
- HIV myelopathy (1994) (3)
- Changes of Neopterin and Tryptophan in Serum and Cerebrospinal Fluid of Patients in Different Stages of HIV -1 Infection (1990) (3)
- Association between haemoglobin and neopterin concentrations in haemodialysis patients treated with erythropoietin (1993) (3)
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- Serum-soluble interleukin-2 receptor, neopterin levels, and severity of dilated cardiomyopathy. (1996) (3)
- Interaction of complement with HIV-1 and Candida albicans: molecular mechanisms and biological implications. (1990) (3)
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- Cerebrospinal fluid neopterin and β2-microglobulin levels in neurologically asymptomatic HIV-infected patients before and after initiation of zidovudine treatment (1992) (3)
- Monitoring of serum neopterin levels for diagnosis of acute rejection of renal allografts. (1989) (3)
- The Influence of Kynurenine and Its Metabolites on Lipid Metabolism (1997) (3)
- Urinary neopterin: An early marker of HIV infection (1987) (3)
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- Characterization of monoclonal antibodies to human immunodefiency virus type 1 gp41 by HIV-1 polypeptides expressed in Escherichia coli (1990) (3)
- IMMUNOSUPPRESSANTS IN TREATMENT OF PATIENTS WITH AIDS (1987) (3)
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- [Changes in cell-mediated immunity after gynecologic interventions]. (1993) (0)
- Interference by electrolytes in the staining with Amido Black 10B of proteins separated electrophoretically. (1970) (0)
- [A combined determination using potassium permanganate and ninhydrin reagents in the peptide mapping technic]. (1969) (0)
- Hyperphenylalaninemia (1992) (0)
- [Comments on the contribution "Changes in T-cell subpopulations in normal pregnancy and in patients with spontaneous abortions" by C. J. Thaler, L. J. Behnken, H. D. Taubert]. (1990) (0)
- Sex differentiation in the fowl from serum proteins separated electrophoretically. (1965) (0)
- Activated Cellular Immunity in Chronic Hepatitis C. (1996) (0)
- 9 Neopterin in Infectious Diseases (1992) (0)
- Simultaneous Determination of NeoptennandCreatinine in SerumwithSolid-Phase Extraction andOn-LineElutionLiquidChromatography (1987) (0)
- New trends in neuropsychiatry: polyimmunotherapy—A new way of treatment in neurology and psychiatry. The 5S-7S Tilz protocol and the antigen clearing deficiency syndromes (1997) (0)
- Activated cell mediated immunity and hematopoiesis in hiv infection (1990) (0)
- [Distribution of the nuclear volumes of the liver cells]. (1954) (0)
- [Sex determination in poultry from blood proteins separated by paper electrophoresis]. (1965) (0)
- GEOGRAPHY OF MEDICAL PUBLICATION. REPLY (1993) (0)
- Comments on Dr. Robert L. Bjork's review (1991) (0)
- Human immunodeficiency virus infection and porphyria cutanea tarda. (1995) (0)
- Antigen test v neopterin test. (1988) (0)
- [Influence of India ink and cortisone on experimental liver lesions induced by carbon tetrachloride]. (1958) (0)
- PTERIDINES DÜRING GRCWTH AND DIFEEIENTIATION OF PHYSARUM POLYCEPHALUM (1982) (0)
- Contents, Vol. 34, Supplement 1, 1994 (1994) (0)
- [Effect of liver hydrolisate on the course of experimental diphtherial intoxication in guinea pig]. (1953) (0)
- Pteridines and cytokines induce apoptotic cell death in alveolar epithelial cells (1997) (0)
- Neopterin and Cellular Immune Activation in Active Gynaecological Cancer: Significant Correlation Between Neopterin and Circulating Number of HLA-DR Expressing Lymphocytes (1990) (0)
- URINARY NEOPTERIN EXCRETION AS AN ACTIVITY PARAMETER IN CROHN'S DISEASE (1985) (0)
- Contents to volume 352 (2001) (0)
- [Comment on the article "Immunologic aspects of invasive squamous cell carcinoma of the cervix uteri"]. (1988) (0)
- [A SIMPLE PROCEDURE FOR TESTING THE REDUCING POWER OF THE BLOOD]. (1965) (0)
- INTEFERON-GAMMA AND MANAGEMENT OF INFECTIOUS DISEASES. AUTHORS' REPLY (1996) (0)
- [Total irradiation in Bad Soden, in Taunus and in other places]. (1967) (0)
- [Neopterin: marker of cellular immunity activation in idiopathic inflammatory myopathy]. (1997) (0)
- Tetrahydrobiopterin-Dependent Conversion of L-Arginine to L-Citrulline and Nitric Oxide in Murine and Human Cells (1991) (0)
- Recombinant-Derived p4l with Conventional Tests for Serodiagnosis of Human Immunodeficiency Virus Infections (0)
- 11 Neopterin in Transfusion Medicine (1992) (0)
- Pteridines in Dictyostelium discoideum and Physarum polycephalum (1983) (0)
- Individual Probabilityfor Onset of Full-BlownDisease in Patients Infected with Human ImmunodeficiencyVirus Type 1 (1991) (0)
- MALING THE BLOOD SAFER. AUTHOR'S REPLY (1993) (0)
- Clues to enhancing the identification of human immunodeficiency virus-infected women. (1993) (0)
- Contents, Vol. 23, Supplementum 3, 1983 (1983) (0)
- Neopterin and the Acute Phase Response in Human Immunodeficiency Virus Type 1 (HIV‐1) Infection. (1992) (0)
- [On the standardization of the thymol turbidity reaction. II]. (1961) (0)
- Abstracts. Thirteenth International Winter-Workshop on Biochemical and Clinical Aspects of Pteridines (1994) (0)
- Neopterin in acute pancreatitis: 689 (1997) (0)
- [Characterization of paraproteins by paper and immune electrophoresis]. (1961) (0)
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What Schools Are Affiliated With Helmut Wachter?
Helmut Wachter is affiliated with the following schools:
