Pharmakologisches Institut für Naturwissenschaftler -
Prof. Dr. Walter E. Müller |
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Expertise
- Neurodegeneration und neuroprotektive Wirkstoffe
- Oxidativer Stress und Antioxidantien
- Antidepressive und anxiolytische Wirkmechanismen
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Methoden
und Geräte
- Apoptose und Nekrose: DNA-Fragmentierung [FACS]; Nucleosomen-ELISA, TUNEL-Färbung [Fluoreszenzmikroskop]; MTT-, LDH-, ATP-Assay (IN-VITRO-TESTSYSTEME)
- Immunologie: Markerbestimmung (CD-3, CD-4, CD-8, IL-2, IL-6 u.) [FACS], Expressionsbestimmung Bcl-2, Bax u.a. (IN-VITRO-TESTSYSTEME)
- Oxidativer Stress: Enzymaktivitätsbestimmungen (SOD, GPx u.a.); GSH-Spiegel; MDA- und HNE-Bestimmung; Antioxidative Kapazität (TEAC), Hydroperoxid-Bestimmung, Hämoglobin-Degradations-Assay, Guaiacol-Oxidations-Assay (IN-VITRO-TESTSYSTEME)
- Molekularbiologie: In vitro-Transkription, -Translation; Klonierungen; PCR (MOLEKULARBIOLOGIE)
- Signaltransduktion: Natrium- und Calcium-Imaging, intrazelluläre pH-Wertmessung (an Einzelzellen und Zellsuspensionen) [Video-Imaging], Radiorezeptorassays (verschiedene Rezeptoren im Bereich der GABAergen, glutaminergen, noradrenergen, dopaminergen und serotonergen Neurotransmission); MAO-A, -B Assay; Synaptosomale Neurotransmitteraufnahme [Radioassay]; Neurotransmitterbestimmung [HPLC]; Transduktionssysteme (PLC, Adenylatcyclase, u.a.) (IN-VITRO-TESTSYSTEME)
- Membranbiochemie: Subzelluläre Fraktionierung, Fluiditätsuntersuchungen, Membrananalyse (Cholesterin, Phospholipide [HPLC, TLC], Fettsäurespektrum [GC-MS], Transbilayer-Cholesterin-Distribution, Isolierung und Charakterisierung von Lipid Rafts [WP], Membranmodulation.
- Charakterisierung von Wirkstoffen in funktionellen Rezeptormodellen, Struktur-Wirkungsbeziehungen(IN-VITRO-TESTSYSTEME)
- Analytik: AAS-FI, HPLC-UV, HPLC-ECD, (WIRKSTOFF-ANALYTIK)
- Zell-Modelle: Bluthirnschranken-Modell (PBCEC- und VLB-Zellen), Alzheimer Modell (PC12swAPP-Zellen, HEKswAPP-Zellen)
- Tierexperimentelle Methoden: (IN-VIVO-TESTSYSTEME)
- Transgene Alzheimer Modelle (PS1, APP), Maus-Alterungsmodell, Kardiomyopathie-Modell (Hamster)
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Mitarbeiter:
- Prof. Dr. Walter E. Müller (Neuropsychopharmakologie, Wirkmechanismen von Antidepressiva und Anxiolytika)
- Dr. Gunter Eckert (Nutritional Neuroscience, Cerebrale Lipid Homeostase, Membranbiologie, Neuroprotektion, neue Targets für Antidementiva, zerebrale Lipidhomöostase)
- Dr. Kristina Leuner (Molekulare Wirkmechanismen von Antidepressiva and Sedativa)
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Publikationen
- Eckert A, Hauptmann S, Scherping I, Meinhardt J, Rhein V, Dröse S, Brandt U, Fändrich M, Müller WE, Götz J: Oligomeric and fibrillar species of beta-amyloid (Abeta42) both impair mitochondrial function in P301L tau transgenic mice. J Mol Med 2008; in press.
- Hooff GP, Volmer DA, Wood WG, Müller WE, Eckert GP: Isoprenoid quantitation in human brain tissue: a validated HPLC-fluorescence detection method for endogenous farnesyl- (FPP) and geranylgeranylpyrophosphate (GGPP). Anal Bioanal Chem 2008; in press.
- Krüger P, Daneshfar R, Eckert GP, Klein J, Volmer DA, Bahr U, Müller WE, Karas, M, Schubert-Zsilavecz M, Abdel-Tawab M: Metabolism of boswellic acids in vitro and in vivo. Drug Metab Dispos 2008; 36:1135-1142.
- Eckert A, Hauptmann S, Scherping I, Rhein V, Müller-Spahn F, Götz J, Müller WE: Soluble beta-amyloid leads to mitochondrial defects in amyloid precursor protein and tau transgenic mice. Neurodegener Dis 2008; 5:157-159.
- Hauptmann S, Scherping I, Dröse S, Brandt U, Schulz KL, Jendrach M, Leuner K, Eckert A, Müller WE: Mitochondrial dysfunction: An early event in Alzheimer pathology accumulates with age in AD transgenic mice. Neurobiol Aging 2008; in press.
- Kasper S, Gastpar M, Müller WE, Volz HP, Dienel A, Kieser M, Möller HJ: Efficacy of St. John's wort extract WS 5570 in acute treatment of mild depression: a reanalysis of data from controlled clinical trials. Eur Arch Psychiatry Clin Neurosci 2008; 258:59-63.
- Huebbe P, Schaffer S, Jofre-Monseny L, Boesch-Saadatmandi C, Minihane AM, Müller WE, Eckert GP, Rimbach G: Apolipoprotein E genotype and alpha-tocopherol modulate amyloid precursor protein metabolism and cell cycle regulation. Mol Nutr Food Res 2007; 51:1510-1517.
- Leuner K, Pantel J, Frey C, Schindowski K, Schulz K, Wegat T, Maurer K, Eckert A, Müller WE: Enhanced apoptosis, oxidative stress and mitochondrial dysfunction in lymphocytes as potential biomarkers for Alzheimer's disease. J Neural Transm Suppl 2007; 72:207-215.
- Abdel-Kader R, Hauptmann S, Keil U, Scherping I, Leuner K, Eckert A, Müller WE: Stabilization of mitochondrial function by Ginkgo biloba extract (EGb 761). Pharmacol Res 2007; 6:493-502.
- Schindowski K, Eckert A, Peters J, Gorriz C, Schramm U, Weinandi T, Maurer K, Frölich L, Müller WE: Increased T-cell reactivity and elevated levels of CD8+ memory T-cells in Alzheimer's disease-patients and T-cell hyporeactivity in an Alzheimer's disease-mouse model: implications for immunotherapy. Neuromolecular Med 2007; 9:340-354.
- Leuner K, Hauptmann S, Abdel-Kader R, Scherping I, Keil U, Strosznajder JB, Eckert A, Müller WE. Mitochondrial dysfunction: the first domino in brain aging and Alzheimer's disease? Antioxid Redox Signal 2007; 9:1659-1675.
- Chalimoniuk M, Stolecka A, Caka?a M, Hauptmann S, Schulz K, Lipka U, Leuner K, Eckert A, Muller WE, Strosznajder JB: Amyloid beta enhances cytosolic phospholipase A2 level and arachidonic acid release via nitric oxide in APP-transfected PC12 cells. Acta Biochim Pol 2007; 54:611-623.
- Leuner K, Kazanski V, Müller M, Essin K, Henke B, Gollasch M, Harteneck C, Müller WE: Hyperforin--a key constituent of St. John's wort specifically activates TRPC6 channels. FASEB J 2007; 21:4101-4111.
- Schaffer S, Podstawa M, Visioli F, Bogani P, Müller WE, Eckert GP: Hydroxytyrosol-rich olive mill wastewater extract protects brain cells in vitro and ex vivo. J Agric Food Chem 2007; 55:5043-5049.
- Johnson-Anuna LN, Eckert GP, Franke C, Igbavboa U, Müller WE, Wood WG: Simvastatin protects neurons from cytotoxicity by up-regulating Bcl-2 mRNA and protein. J Neurochem 2007; 101:77-86.
- Dos Santos SM, Weber CC, Franke C, Müller WE, Eckert GP: Cholesterol: Coupling between membrane microenvironment and ABC transporter activity. Biochem Biophys Res Commun 2007; 354:216-221
- Franke C, Nöldner M, Abdel-Kader R, Johnson-Anuna LN, Gibson Wood W, Müller WE, Eckert GP: Bcl-2 upregulation and neuroprotection in guinea pig brain following chronic simvastatin treatment. Neurobiol Dis 2007; 25:438-445.
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