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Lorza-Gil E, Przemeck GKH, Ulven ER, Sabrautzki S, Panse M, Gerst F, Häring HU, Ulven T, Hrabě de Angelis M, Ullrich S. Role of free fatty acid signaling in islet function. DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1641773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- E Lorza-Gil
- Universitätsklinikum Tübingen, Institut für Diabetes Forschung und Metabolische Krankheiten des Helmholtz Zentrum München an der Universität Tübingen (IDM), Department für Pathophysiologie des Prediabetes, Tübingen, Germany
- German Center for Diabetes Research (DZD e.V.), Tübingen, Germany
| | - GKH Przemeck
- Helmholtz Zentrum München, Institute of Experimental Genetics and the German Mouse Clinic, Neuherberg, Germany
- German Center for Diabetes Research (DZD e.V.), München, Germany
| | - ER Ulven
- University of Southern Denmark, Department of Physics, Chemistry and Pharmacy, Odense M, Denmark
| | - S Sabrautzki
- Helmholtz Zentrum München, Institute of Experimental Genetics and the German Mouse Clinic, Neuherberg, Germany
- Helmholtz Zentrum München, Research Unit Comparative Medicine, Neuherberg, Germany
| | - M Panse
- German Center for Diabetes Research (DZD e.V.), Tübingen, Germany
- University Hospital Tübingen, Internal Medicine IV, Endocrinology, Diabetology, Vascular Medicine, Nephrology and Clinical Chemistry, Tübingen, Germany
| | - F Gerst
- German Center for Diabetes Research (DZD e.V.), Tübingen, Germany
- Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tübingen (IDM), Department für Pathophysiologie des Prediabetes, Tübingen, Germany
| | - HU Häring
- German Center for Diabetes Research (DZD e.V.), Tübingen, Germany
- University Hospital Tübingen, Internal Medicine IV, Endocrinology, Diabetology, Vascular Medicine, Nephrology and Clinical Chemistry, Tübingen, Germany
| | - T Ulven
- University of Copenhagen, Department of Drug Design and Pharmacology, Copenhagen, Denmark
| | - M Hrabě de Angelis
- Helmholtz Zentrum München, Institute of Experimental Genetics and the German Mouse Clinic, Neuherberg, Germany
- Technische Universität München, Chair of Experimental Genetics, School of Life Sciences Weihenstephan, München, Germany
| | - S Ullrich
- German Center for Diabetes Research (DZD e.V.), Tübingen, Germany
- Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tübingen (IDM), Department für Pathophysiologie des Prediabetes, Tübingen, Germany
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Panse M, Gerst F, Kaiser G, Häring HU, Ullrich S. Synergistic effects of palmitate and insulin/IGF-1 signaling on glucose-mediated upregulation of Thioredoxin interacting protein (TxNIP) in pancreatic beta-cells. DIABETOL STOFFWECHS 2017. [DOI: 10.1055/s-0037-1601666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- M Panse
- German Center for Diabetes Research (DZD), Tübingen, Germany
| | - F Gerst
- German Center for Diabetes Research (DZD), Tübingen, Germany
| | - G Kaiser
- German Center for Diabetes Research (DZD), Tübingen, Germany
| | - HU Häring
- German Center for Diabetes Research (DZD), Tübingen, Germany
| | - S Ullrich
- German Center for Diabetes Research (DZD), Tübingen, Germany
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Gerst F, Wagner R, Panse M, Siegel-Axel D, Ordelheide A, Stefan N, Sipos B, Fend F, Nadalin S, Königsrainer A, Häring HU, Ullrich S. Charakterisierung des „fettigen“ Pankreas: Beeinflussen Adipozyten und Immunzellen die Insel? DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1580810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Siegel-Axel DI, Gerst F, Panse M, Wagner R, Machann J, Stefan N, Schmidt U, Schreiner B, Sipos B, Fend F, Nadalin S, Königsrainer A, Häring HU, Ullrich S. Interaktionen des „fettigen“ Pankreas mit der Fettleber: Unterschiedliche Effekte von Fetuin-A auf die durch Prädipozyten und Adipozyten vermittelte pankreatische Inflammation. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1580756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Panse M, Gerst F, Kaiser G, Häring HU, Ullrich S. The role of FOXO1 in palmitate-induced β-cell death. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1549756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Gerst F, Kaiser G, Panse M, Pujol A, Bosch F, Häring HU, Ullrich S. PKCdelta-dependent phosphorylation of 14 – 3-3zeta delays the nuclear export of FOXO1 in beta-cells. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Panse M, Kaiser G, Gerst F, Häring HU, Ullrich S. Regulation of thioredoxin interacting protein by FFA1 ligands under hyperglycemic conditions. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Panse M, Block HU, Förster W, Mest HJ. An improved malondialdehyde assay for estimation of thromboxane synthase activity in washed human blood platelets. Prostaglandins 1985; 30:1031-40. [PMID: 3937179 DOI: 10.1016/0090-6980(85)90174-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
After stimulation of the washed human blood platelets by arachidonic acid (AA), the concurrent evaluations for formed malondialdehyde (MDA) measured by the common photometrical thiobarbituric acid (TBA) method, and for thromboxane B2 (TXB2) measured by gas chromatography, revealed that the formed MDA exceeded the amount of TXB2 on a molar base. However, MDA and TXB2 originating from thromboxane synthase activity should be produced in approximately equimolar amounts. By treatment of the stimulated platelet samples with stannous chloride it is possible to reduce all peroxidized products of AA which generate MDA otherwise during the TBA reaction and to estimate MDA and TXB2 in a ratio of nearly 1:1. The stannous chloride treatment does not destroy the MDA and does not influence the TBA reaction with MDA. Therefore the simple and quick TBA method can be used after stannous chloride treatment for estimation of thromboxane synthase activity in AA stimulated washed human platelets.
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Beitz J, Panse M, Fischer S, Hora C, Förster W. Inhibition of prostaglandin I2 (PGI2) formation by LDL-cholesterol or LDL-peroxides? Prostaglandins 1983; 26:885-92. [PMID: 6396733 DOI: 10.1016/0090-6980(83)90151-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A hypothesis of Gryglewski et al. explains the correlation between increased level of LDL and development of atherosclerosis by inhibition of PGI2 synthesis by increased peroxide content of LDL. The aim of the present paper was to examine this hypothesis. The major results are: 1) Preparation of LDL in the presence of .02% butylated hydroxytoluene did not reduce the lipid peroxide content of LDL from men and women and not change the inhibition or stimulation of the in vitro biosynthesis of PGI2 by LDL isolated from blood of men or women, respectively. 2) In the LDL and HDL, respectively, of healthy men we found nearly the same lipid peroxide levels (nmole malondialdehyde (MDA)/mg lipoprotein-cholesterol) as in the lipoproteins of male patients with hyperlipidemia type IIa or IV, but the peroxide concentration is three times higher in HDL as in LDL. 3) LDL isolated from healthy men inhibited in dose dependent fashion the generation of PGI2 from PGH2 by aortic microsomes whereas LDL from premenopausal women stimulated PGI2 formation even calculated as LDL lipid peroxides (in nM MDA/ml). The results call into question the hypothesis that diminished PGI2 formation by atherosclerotic vessels is related to inhibition of PGI2 synthetase by lipid peroxides present in LDL in the lesions. A new working hypothesis is presented that also the fatty acid pattern and the lipid class composition in the LDL are important for their influence on the PGI2 formation.
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Beitz J, Panse M, Förster W. Low density lipoprotein (LDL) from male volunteers stimulated the thromboxane formation by human platelets. Prostaglandins Leukot Med 1983; 10:443-8. [PMID: 6574527 DOI: 10.1016/0262-1746(83)90056-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
LDL (0.5 - 2.0 mg LDL-cholesterol/ml) isolated from venous blood of healthy male volunteers stimulated dose-dependently the malondialdehyde (MDA) formation by frozen human platelets, used as a marker for the activity of the thromboxane synthetase. HDL (0.25 - 1.0 mg HDL-cholesterol/ml) and human serum albumin (1 - 10 mg/ml) had no concentration-dependent influence on the MDA formation. If these results can be extended to in vivo they suggested the strong connection between the prostaglandin and lipoprotein hypothesis of pathogenesis of atherosclerosis.
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