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Heratizadeh A, Mempel M, von Kiedrowski R, Hagl S, Mosch T, Fritz B, Werfel T. Checklist identification of candidates for systemic therapy in adult patients with atopic dermatitis in Germany: A multicentre study. J Eur Acad Dermatol Venereol 2024; 38:157-166. [PMID: 37611262 DOI: 10.1111/jdv.19465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 08/02/2023] [Indexed: 08/25/2023]
Abstract
BACKGROUND The German S2k guideline is the first to include a checklist that captures atopic dermatitis (AD) signs and symptoms as well as the lack of treatment response to identify patients eligible for systemic therapy. OBJECTIVES Identifying candidates for a start/switch of systemic therapy in adult AD patients in Germany by applying the S2k guideline's checklist. METHODS In this German multicentre, cross-sectional, non-interventional study (German Clinical Trials Register number: DRKS00023296), adult patients with mild to severe AD were enrolled at dermatological outpatient clinics and offices between April and October 2021. Demographics, clinical characteristics and quality of life were collected using questionnaires during one single visit. Eligibility for a start/switch of systemic AD therapy was evaluated according to the criteria of the German S2k guideline's checklist. RESULTS Atopic dermatitis patients (575) were included in the analysis. One hundred and sixty-four patients (28.5%) received systemic (SYS) AD therapy and 411 patients (71.5%) did not (TOP). Of the TOP therapy patients, 38.7% were eligible to start systemic AD therapy, and about half of those (49.1%), were scheduled to start systemic AD therapy. The most frequent reason deciding against a systemic therapy was the patient's wish. Although 29.3% of SYS patients were eligible for a switch according to the criteria of the German S2k guideline's checklist, the majority (81.3%) did not switch AD therapy. CONCLUSIONS This is the first study on the implementation of the German S2k guideline's checklist in everyday care of AD patients in Germany. More than one-third of the TOP patients were identified as eligible for systemic treatment. By applying the guideline's checklist criteria, another one-third of SYS patients may have benefited from a change of current systemic therapy. The use of the German S2k guideline's checklist in routine care represents an important tool to ensure effective patient care and identify inadequately treated patients.
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Affiliation(s)
- A Heratizadeh
- Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | - M Mempel
- Hautarztpraxis Elmshorn, Elmshorn, Germany
| | - R von Kiedrowski
- Company for Medical Study & Service Selters GmbH (CMS), Selters, Germany
| | - S Hagl
- formerly AbbVie Deutschland GmbH & Co. KG, Wiesbaden, Germany
| | - T Mosch
- AbbVie Deutschland GmbH & Co. KG, Wiesbaden, Germany
| | - B Fritz
- AbbVie Deutschland GmbH & Co. KG, Wiesbaden, Germany
| | - T Werfel
- Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
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Eckert GP, Eckert SH, Eckmann J, Hagl S, Muller WE, Friedland K. Olesoxime improves cerebral mitochondrial dysfunction and enhances Aβ levels in preclinical models of Alzheimer's disease. Exp Neurol 2020; 329:113286. [PMID: 32199815 DOI: 10.1016/j.expneurol.2020.113286] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 02/15/2020] [Accepted: 03/17/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Approved drugs for Alzheimer's disease (AD) only have a symptomatic effects and do not intervene causally in the course of the disease. Olesoxime (TRO19622) has been tested in AD disease models characterized by improved amyloid precursor protein processing (AβPP) and mitochondrial dysfunction. METHODS Three months old Thy-1-AβPPSL (tg) and wild type mice (wt) received TRO19622 (100 mg/kg b.w.) in supplemented food pellets for 15 weeks (tg TRO19622). Mitochondrial membrane potential (MMP) and adenosine triphosphate (ATP) levels were determined in dissociated brain cells (DBC). Respiration was analyzed in mitochondria isolated from brain tissue. Citrate synthase (CS) activity and beta-amyloid peptide (Aβ1-40) levels were determined in brain tissue. Malondialdehyde (MDA) levels were determined as an indicator for lipid peroxidation. DBC and brain homogenates were additionally stressed with Rotenone and FeCl2, respectively. Mitochondrial respiration and Aβ1-40 levels were also determined in HEK-AβPPsw-cells. RESULTS Treatment of mice did not affect the body weight. TRO19622 was absorbed after oral treatment (plasma levels: 6,2 μg/ml). Mitochondrial respiration was significantly reduced in brains of tg-mice. Subsequently, DBC isolated from brains of tg-mice showed significantly lower MMP but not ATP levels. TRO19622 increased the activity of respiratory chain complexes and reversed complex IV (CIV) activity and MMP. Moreover, DBC isolated from brains of tg TRO19622 mice were protected from Rotenone induced inhibition of complex I activity. TRO19622 also increased the respiratory activity in HEKsw-cells. MDA basal levels were significantly higher in brain homogenates isolated from tg-mice. TRO19622 treatment had no effects on lipid peroxidation. TRO19622 increased cholesterol levels but did not change membrane fluidity of synaptosomal plasma and mitochondrial membranes isolated from brain of mice. TRO19622 significantly increased levels of Aβ1-40 in both, in brains of tg TRO19622 mice and in HEKsw cells. CONCLUSIONS TRO19622 improves mitochondrial dysfunction but enhances Aβ levels in disease models of AD. Further studies must evaluate whether TRO19622 offers benefits at the mitochondrial level despite the increased formation of Aβ, which could be harmful.
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Affiliation(s)
- Gunter P Eckert
- Institute of Nutritional Sciences, Justus-Liebig-University, Giessen, Germany.
| | - Schamim H Eckert
- Institute of Pharmacology, Goethe University, Frankfurt, Germany
| | - Janett Eckmann
- Institute of Pharmacology, Goethe University, Frankfurt, Germany
| | - Stephanie Hagl
- Institute of Pharmacology, Goethe University, Frankfurt, Germany
| | - Walter E Muller
- Institute of Pharmacology, Goethe University, Frankfurt, Germany
| | - Kristina Friedland
- Institute of Pharmacology, Johannes-Gutenberg University, Mainz, Germany
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Esselun C, Bruns B, Hagl S, Grewal R, Eckert GP. Differential Effects of Silibinin A on Mitochondrial Function in Neuronal PC12 and HepG2 Liver Cells. Oxid Med Cell Longev 2019; 2019:1652609. [PMID: 31871539 PMCID: PMC6906813 DOI: 10.1155/2019/1652609] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 08/27/2019] [Accepted: 10/08/2019] [Indexed: 12/23/2022]
Abstract
The Mediterranean plant Silybum marianum L., commonly known as milk thistle, has been used for centuries to treat liver disorders. The flavonolignan silibinin represents a natural antioxidant and the main bioactive ingredient of silymarin (silybin), a standard extract of its seeds. Mitochondrial dysfunction and the associated generation of reactive oxygen/nitrogen species (ROS/RNS) are involved in the development of chronic liver and age-related neurodegenerative diseases. Silibinin A (SIL A) is one of two diastereomers found in silymarin and was used to evaluate the effects of silymarin on mitochondrial parameters including mitochondrial membrane potential and ATP production with and without sodium nitroprusside- (SNP-) induced nitrosative stress, oxidative phosphorylation, and citrate synthase activity in HepG2 and PC12 cells. Both cell lines were influenced by SIL A, but at different concentrations. SIL A significantly weakened nitrosative stress in both cell lines. Low concentrations not only maintained protective properties but also increased basal mitochondrial membrane potential (MMP) and adenosine triphosphate (ATP) levels. However, these effects could not be associated with oxidative phosphorylation. On the other side, high concentrations of SIL A significantly decreased MMP and ATP levels. Although SIL A did not provide a general improvement of the mitochondrial function, our findings show that SIL A protects against SNP-induced nitrosative stress at the level of mitochondria making it potentially beneficial against neurological disorders.
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Affiliation(s)
- Carsten Esselun
- Institute for Nutritional Sciences, Justus-Liebig-University of Giessen, Giessen, Germany
| | - Bastian Bruns
- Institute of Pharmacology, Goethe-University of Frankfurt am Main, Frankfurt am Main, Germany
| | - Stephanie Hagl
- Institute of Pharmacology, Goethe-University of Frankfurt am Main, Frankfurt am Main, Germany
| | - Rekha Grewal
- Institute for Nutritional Sciences, Justus-Liebig-University of Giessen, Giessen, Germany
| | - Gunter P. Eckert
- Institute for Nutritional Sciences, Justus-Liebig-University of Giessen, Giessen, Germany
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Pohland M, Pellowska M, Asseburg H, Hagl S, Reutzel M, Joppe A, Berressem D, Eckert SH, Wurglics M, Schubert‐Zsilavecz M, Eckert GP. MH84 improves mitochondrial dysfunction in a mouse model of early Alzheimer's disease. Alzheimers Res Ther 2018; 10:18. [PMID: 29433569 PMCID: PMC5809956 DOI: 10.1186/s13195-018-0342-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 01/12/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND Current approved drugs for Alzheimer's disease (AD) only attenuate symptoms, but do not cure the disease. The pirinixic acid derivate MH84 has been characterized as a dual gamma-secretase/proliferator activated receptor gamma (PPARγ) modulator in vitro. Pharmacokinetic studies in mice showed that MH84 is bioavailable after oral administration and reaches the brain. We recently demonstrated that MH84 improved mitochondrial dysfunction in a cellular model of AD. In the present study, we extended the pharmacological characterization of MH84 to 3-month-old Thy-1 AβPPSL mice (harboring the Swedish and London mutation in human amyloid precursor protein (APP)) which are characterized by enhanced AβPP processing and cerebral mitochondrial dysfunction, representing a mouse model of early AD. METHODS Three-month-old Thy-1 AβPPSL mice received 12 mg/kg b.w. MH84 by oral gavage once a day for 21 days. Mitochondrial respiration was analyzed in isolated brain mitochondria, and mitochondrial membrane potential and ATP levels were determined in dissociated brain cells. Citrate synthase (CS) activity was determined in brain tissues and MitoTracker Green fluorescence was measured in HEK293-AβPPwt and HEK293-AβPPsw cells. Soluble Aβ1-40 and Aβ1-42 levels were determined using ELISA. Western blot analysis and qRT-PCR were used to measure protein and mRNA levels, respectively. RESULTS MH84 reduced cerebral levels of the β-secretase-related C99 peptide and of Aβ40 levels. Mitochondrial dysfunction was ameliorated by restoring complex IV (cytochrome-c oxidase) respiration, mitochondrial membrane potential, and levels of ATP. Induction of PPARγ coactivator-1α (PGC-1α) mRNA and protein expression was identified as a possible mode of action that leads to increased mitochondrial mass as indicated by enhanced CS activity, OXPHOS levels, and MitoTracker Green fluorescence. CONCLUSIONS MH84 modulates β-secretase processing of APP and improves mitochondrial dysfunction by a PGC-1α-dependent mechanism. Thus, MH84 seems to be a new promising therapeutic agent with approved in-vivo activity for the treatment of AD.
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Affiliation(s)
| | - Maren Pellowska
- Institute of Pharmaceutical Chemistry, Goethe University, Frankfurt, Germany
| | - Heike Asseburg
- Institute of Pharmacology, Goethe University, Frankfurt, Germany
- Institute of Nutritional Sciences, Justus-Liebig-University, Giessen, Germany
| | - Stephanie Hagl
- Institute of Pharmacology, Goethe University, Frankfurt, Germany
| | - Martina Reutzel
- Institute of Nutritional Sciences, Justus-Liebig-University, Giessen, Germany
| | - Aljoscha Joppe
- Institute of Pharmacology, Goethe University, Frankfurt, Germany
| | - Dirk Berressem
- Institute of Pharmacology, Goethe University, Frankfurt, Germany
| | | | - Mario Wurglics
- Institute of Pharmaceutical Chemistry, Goethe University, Frankfurt, Germany
| | | | - Gunter P. Eckert
- Institute of Nutritional Sciences, Justus-Liebig-University, Giessen, Germany
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Asseburg H, Schäfer C, Müller M, Hagl S, Pohland M, Berressem D, Borchiellini M, Plank C, Eckert GP. Effects of Grape Skin Extract on Age-Related Mitochondrial Dysfunction, Memory and Life Span in C57BL/6J Mice. Neuromolecular Med 2016; 18:378-95. [DOI: 10.1007/s12017-016-8428-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 07/15/2016] [Indexed: 02/06/2023]
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Hagl S, Asseburg H, Heinrich M, Sus N, Blumrich EM, Dringen R, Frank J, Eckert GP. Effects of Long-Term Rice Bran Extract Supplementation on Survival, Cognition and Brain Mitochondrial Function in Aged NMRI Mice. Neuromolecular Med 2016; 18:347-63. [PMID: 27350374 DOI: 10.1007/s12017-016-8420-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 06/14/2016] [Indexed: 11/27/2022]
Abstract
Aging represents a major risk factor for the development of neurodegenerative diseases like Alzheimer's disease (AD). As mitochondrial dysfunction plays an important role in brain aging and occurs early in the development of AD, the prevention of mitochondrial dysfunction might help to slow brain aging and the development of neurodegenerative diseases. Rice bran extract (RBE) contains high concentrations of vitamin E congeners and γ-oryzanol. We have previously shown that RBE increased mitochondrial function and protected from mitochondrial dysfunction in vitro and in short-term in vivo feeding studies. To mimic the use of RBE as food additive, we have now investigated the effects of a long-term (6 months) feeding of RBE on survival, behavior and brain mitochondrial function in aged NMRI mice. RBE administration significantly increased survival and performance of aged NMRI mice in the passive avoidance and Y-maze test. Brain mitochondrial dysfunction found in aged mice was ameliorated after RBE administration. Furthermore, data from mRNA and protein expression studies revealed an up-regulation of mitochondrial proteins in RBE-fed mice, suggesting an increase in mitochondrial content which is mediated by a peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC1α)-dependent mechanism. Our findings suggest that a long-term treatment with a nutraceutical containing RBE could be useful for slowing down brain aging and thereby delaying or even preventing AD.
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Affiliation(s)
- Stephanie Hagl
- Department of Pharmacology, Goethe-University, Biozentrum Niederursel, Max-von-Laue-Straße 9, 60438, Frankfurt, Germany
| | - Heike Asseburg
- Department of Pharmacology, Goethe-University, Biozentrum Niederursel, Max-von-Laue-Straße 9, 60438, Frankfurt, Germany
| | - Martina Heinrich
- Department of Pharmacology, Goethe-University, Biozentrum Niederursel, Max-von-Laue-Straße 9, 60438, Frankfurt, Germany
| | - Nadine Sus
- Institute of Biological Chemistry and Nutrition, University of Hohenheim, Garbenstraße 28, 70599, Stuttgart, Germany
| | - Eva-Maria Blumrich
- Centre for Biomolecular Interactions Bremen, University of Bremen, Bremen, Germany.,Centre for Environmental Research and Sustainable Technology, University of Bremen, Bremen, Germany
| | - Ralf Dringen
- Centre for Biomolecular Interactions Bremen, University of Bremen, Bremen, Germany.,Centre for Environmental Research and Sustainable Technology, University of Bremen, Bremen, Germany
| | - Jan Frank
- Institute of Biological Chemistry and Nutrition, University of Hohenheim, Garbenstraße 28, 70599, Stuttgart, Germany
| | - Gunter P Eckert
- Department of Pharmacology, Goethe-University, Biozentrum Niederursel, Max-von-Laue-Straße 9, 60438, Frankfurt, Germany. .,Institute of Nutritional Sciences, University of Giessen, Wilhelmstrasse 20, 35392, Giessen, Germany.
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Bhatia HS, Baron J, Hagl S, Eckert GP, Fiebich BL. Rice bran derivatives alleviate microglia activation: possible involvement of MAPK pathway. J Neuroinflammation 2016; 13:148. [PMID: 27301644 PMCID: PMC4908728 DOI: 10.1186/s12974-016-0615-6] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Accepted: 06/07/2016] [Indexed: 01/08/2023] Open
Abstract
Background Hyperactivation of microglia is considered to be a key hallmark of brain inflammation and plays a critical role in regulating neuroinflammatory events. Neuroinflammatory responses in microglia represent one of the major risk factors for various neurodegenerative diseases. One of the strategies to protect the brain and slow down the progression of these neurodegenerative diseases is by consuming diet enriched in anti-oxidants and polyphenols. Therefore, the present study aimed to evaluate the anti-inflammatory effects of rice bran extract (RBE), one of the rich sources of vitamin E forms (tocopherols and tocotrienols) and gamma-oryzanols, in primary rat microglia. Methods The vitamin E profile of the RBE was quantified by high-performance liquid chromatography (HPLC). Microglia were stimulated with lipopolysaccharide (LPS) in the presence or absence of RBE. Release of prostaglandins (prostaglandin (PG) E2, 8-iso-prostaglandin F2α (8-iso-PGF2α)) were determined with enzyme immunoassay (EIA). Protein levels and genes related to PGE2 synthesis (Cyclooxygenase-2 (COX-2), microsomal prostaglandin E synthase-1 (mPGES-1)) and various pro- and anti-inflammatory cytokines (TNF-α, IL-1β, IL-6, and IL-10), were assessed by western blot, ELISA, and quantitative real-time PCR. Furthermore, to elucidate the molecular targets of RBE, the phosphorylated state of various mitogen-activated protein kinase (MAPK) signaling molecules (p38 MAPK, ERK 1/2, and JNK) and activation of NF-kB pathway was studied. Results RBE significantly inhibited the release of PGE2 and free radical formation (8-iso-PGF2α) in LPS-activated primary microglia. Inhibition of PGE2 by RBE was dependent on reduced COX-2 and mPGES-1 immunoreactivity in microglia. Interestingly, treatment of activated microglia with RBE further enhanced the gene expression of the microglial M2 marker IL-10 and reduced the expression of pro-inflammatory M1 markers (TNF-α, IL-1β). Further mechanistic studies showed that RBE inhibits microglial activation by interfering with important steps of MAPK signaling pathway. Additionally, microglia activation with LPS leads to IkB-α degradation which was not affected by the pre-treatment of RBE. Conclusions Taken together, our data demonstrate that RBE is able to affect microglial activation by interfering in important inflammatory pathway. These in vitro findings further demonstrate the potential value of RBE as a nutraceutical for the prevention of microglial dysfunction related to neuroinflammatory diseases, including Alzheimer’s disease. Electronic supplementary material The online version of this article (doi:10.1186/s12974-016-0615-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Harsharan S Bhatia
- Department of Psychiatry, University of Freiburg Medical School, Hauptstr. 5, Freiburg, 79104, Germany. .,VivaCell Biotechnology GmbH, Ferdinand-Porsche-Str. 5, Denzlingen, 79211, Germany.
| | - Julian Baron
- Department of Psychiatry, University of Freiburg Medical School, Hauptstr. 5, Freiburg, 79104, Germany
| | - Stephanie Hagl
- Department of Pharmacology, Goethe University, Biozentrum Niederursel, Max-von-Laue-Str. 9, Frankfurt, 60438, Germany
| | - Gunter P Eckert
- Department of Pharmacology, Goethe University, Biozentrum Niederursel, Max-von-Laue-Str. 9, Frankfurt, 60438, Germany.,Institute of Nutritional Sciences, University of Giessen, Wilhelmstrasse 20, Giessen, 35392, Germany
| | - Bernd L Fiebich
- Department of Psychiatry, University of Freiburg Medical School, Hauptstr. 5, Freiburg, 79104, Germany.,VivaCell Biotechnology GmbH, Ferdinand-Porsche-Str. 5, Denzlingen, 79211, Germany
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Hagl S, Berressem D, Bruns B, Sus N, Frank J, Eckert GP. Beneficial Effects of Ethanolic and Hexanic Rice Bran Extract on Mitochondrial Function in PC12 Cells and the Search for Bioactive Components. Molecules 2015; 20:16524-39. [PMID: 26378512 PMCID: PMC6331980 DOI: 10.3390/molecules200916524] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 09/03/2015] [Accepted: 09/07/2015] [Indexed: 12/31/2022] Open
Abstract
Mitochondria are involved in the aging processes that ultimately lead to neurodegeneration and the development of Alzheimer’s disease (AD). A healthy lifestyle, including a diet rich in antioxidants and polyphenols, represents one strategy to protect the brain and to prevent neurodegeneration. We recently reported that a stabilized hexanic rice bran extract (RBE) rich in vitamin E and polyphenols (but unsuitable for human consumption) has beneficial effects on mitochondrial function in vitro and in vivo (doi:10.1016/j.phrs.2013.06.008, 10.3233/JAD-132084). To enable the use of RBE as food additive, a stabilized ethanolic extract has been produced. Here, we compare the vitamin E profiles of both extracts and their effects on mitochondrial function (ATP concentrations, mitochondrial membrane potential, mitochondrial respiration and mitochondrial biogenesis) in PC12 cells. We found that vitamin E contents and the effects of both RBE on mitochondrial function were similar. Furthermore, we aimed to identify components responsible for the mitochondria-protective effects of RBE, but could not achieve a conclusive result. α-Tocotrienol and possibly also γ-tocotrienol, α-tocopherol and δ-tocopherol might be involved, but hitherto unknown components of RBE or a synergistic effect of various components might also play a role in mediating RBE’s beneficial effects on mitochondrial function.
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Affiliation(s)
- Stephanie Hagl
- Department of Pharmacology, Biocenter Campus Riedberg, Goethe-University of Frankfurt, Frankfurt 60438, Germany.
| | - Dirk Berressem
- Department of Pharmacology, Biocenter Campus Riedberg, Goethe-University of Frankfurt, Frankfurt 60438, Germany.
| | - Bastian Bruns
- Department of Pharmacology, Biocenter Campus Riedberg, Goethe-University of Frankfurt, Frankfurt 60438, Germany.
| | - Nadine Sus
- Institute of Biological Chemistry and Nutrition, University of Hohenheim, Stuttgart 70599, Germany.
| | - Jan Frank
- Institute of Biological Chemistry and Nutrition, University of Hohenheim, Stuttgart 70599, Germany.
| | - Gunter P Eckert
- Department of Pharmacology, Biocenter Campus Riedberg, Goethe-University of Frankfurt, Frankfurt 60438, Germany.
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Hagl S, Grewal R, Ciobanu I, Helal A, Khayyal MT, Muller WE, Eckert GP. Rice bran extract compensates mitochondrial dysfunction in a cellular model of early Alzheimer's disease. J Alzheimers Dis 2015; 43:927-38. [PMID: 25125472 DOI: 10.3233/jad-132084] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Mitochondrial dysfunction plays an important role in brain aging and has emerged to be an early event in Alzheimer's disease (AD), contributing to neurodegeneration and the loss of physical abilities seen in patients suffering from this disease. We examined mitochondrial dysfunction in a cell culture model of AD (PC12APPsw cells) releasing very low amyloid-β (Aβ40) levels and thus mimicking early AD stages. Our data show that these cells have impaired energy metabolism, low ATP levels, and decreased endogenous mitochondrial respiration. Furthermore, protein levels of PGC1α as well as of Mitofusin 1 were decreased. PC12APPsw cells also showed increased mitochondrial content, probably due to an attempt to compensate the impaired mitochondrial function. Recent data showed that stabilized rice bran extract (RBE) protects from mitochondrial dysfunction in vivo Pharmacol Res. (2013) 76C, 17-27. To assess the effect of RBE on mitochondrial function, we treated PC12APPsw cells for 24 h with RBE. Key components of RBE are oryzanols, tocopherols, and tocotrienols, all substances that have been found to exert beneficial effects on mitochondrial function. RBE incubation elevated ATP production and respiratory rates as well as PGC1α protein levels in PC12APPsw cells, thus improving the impaired mitochondrial function assessed in our cell culture AD model. Therefore, RBE represents to be a promising nutraceutical for the prevention of AD.
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Affiliation(s)
- Stephanie Hagl
- Department of Pharmacology, Campus Riedberg, Goethe-University, Frankfurt, Germany
| | - Rekha Grewal
- Department of Pharmacology, Campus Riedberg, Goethe-University, Frankfurt, Germany
| | - Ion Ciobanu
- Department of Pharmacology, Campus Riedberg, Goethe-University, Frankfurt, Germany
| | | | - Mohamed T Khayyal
- Department of Pharmacology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Walter E Muller
- Department of Pharmacology, Campus Riedberg, Goethe-University, Frankfurt, Germany
| | - Gunter P Eckert
- Department of Pharmacology, Campus Riedberg, Goethe-University, Frankfurt, Germany
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Hagl S, Kocher A, Schiborr C, Kolesova N, Frank J, Eckert GP. Curcumin micelles improve mitochondrial function in neuronal PC12 cells and brains of NMRI mice - Impact on bioavailability. Neurochem Int 2015; 89:234-42. [PMID: 26254982 DOI: 10.1016/j.neuint.2015.07.026] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/27/2015] [Accepted: 07/31/2015] [Indexed: 01/19/2023]
Abstract
Curcumin, a polyphenolic compound abundant in the rhizome of Curcuma longa, has been reported to have various beneficial biological and pharmacological activities. Recent research revealed that curcumin might be valuable in the prevention and therapy of numerous disorders including neurodegenerative diseases like Alzheimer's disease. Due to its low absorption and quick elimination from the body, curcumin bioavailability is rather low which poses major problems for the use of curcumin as a therapeutic agent. There are several approaches to ameliorate curcumin bioavailability after oral administration, amongst them simultaneous administration with secondary plant compounds, micronization and micellation. We examined bioavailability in vivo in NMRI mice and the effects of native curcumin and a newly developed curcumin micelles formulation on mitochondrial function in vitro in PC12 cells and ex vivo in isolated mouse brain mitochondria. We found that curcumin micelles improved bioavailability of native curcumin around 10- to 40-fold in plasma and brain of mice. Incubation with native curcumin and curcumin micelles prevented isolated mouse brain mitochondria from swelling, indicating less mitochondrial permeability transition pore (mPTP) opening and prevention of injury. Curcumin micelles proved to be more efficient in preventing mitochondrial swelling in isolated mouse brain mitochondria and protecting PC12 cells from nitrosative stress than native curcumin. Due to their improved effectivity, curcumin micelles might be a suitable formulation for the prevention of mitochondrial dysfunction in brain aging and neurodegeneration.
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Affiliation(s)
- Stephanie Hagl
- Department of Pharmacology, Biozentrum Niederursel, Goethe University, Max-von-Laue-Str. 9, 60438 Frankfurt, Germany.
| | - Alexa Kocher
- Institute of Biological Chemistry and Nutrition, University of Hohenheim, Garbenstr. 28, 70599 Stuttgart, Germany
| | - Christina Schiborr
- Institute of Biological Chemistry and Nutrition, University of Hohenheim, Garbenstr. 28, 70599 Stuttgart, Germany
| | - Natalie Kolesova
- Department of Pharmacology, Biozentrum Niederursel, Goethe University, Max-von-Laue-Str. 9, 60438 Frankfurt, Germany
| | - Jan Frank
- Institute of Biological Chemistry and Nutrition, University of Hohenheim, Garbenstr. 28, 70599 Stuttgart, Germany
| | - Gunter P Eckert
- Department of Pharmacology, Biozentrum Niederursel, Goethe University, Max-von-Laue-Str. 9, 60438 Frankfurt, Germany
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Abstract
OBJECTIVES Aging represents a major risk factor for neurodegenerative diseases such as Alzheimer's disease. Mitochondria are significantly involved in both the aging process and neurodegeneration. One strategy to protect the brain and to prevent neurodegeneration is a healthy lifestyle including a diet rich in antioxidants and polyphenols. Rice bran extract (RBE) contains various antioxidants including natural vitamin E forms (tocopherols and tocotrienols) and gamma-oryzanol. In this work, we examined the effects of a stabilized RBE on mitochondrial function in 18-month-old Naval Medical Research Institute mice (340 mg/kg body weight/day), which received the extract for 3 weeks via oral gavage. METHODS Mitochondrial parameters were measured using high-resolution respirometry (Oroboros Oxygraph-2k), Western blot analysis, and photometric methods in dissociated brain cells, isolated mitochondria, and brain homogenate. Vitamin E concentrations in blood plasma and brain tissue were measured using HPLC with fluorescence detection. RESULTS Aging leads to decreased mitochondrial function (decreased mitochondrial respiration and ATP production) and decreased protein expression of peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC1alpha). RBE administration increased alpha-tocopherol concentrations in the brain and compensated for age-related mitochondrial dysfunction by increasing mitochondrial respiration, membrane potential, PGC1alpha protein expression, and citrate synthase activity. Furthermore, resistance of brain cells to sodium nitroprusside-induced nitrosative stress was improved. DISCUSSION According to these results, RBE is a promising candidate nutraceutical for the prevention of age-related neurodegenerative diseases.
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Kocher A, Hagl S, Schiborr C, Eckert GP, Frank J. Concentrations of total curcuminoids in plasma, but not liver and kidney, are higher in 18- than in 3-months old mice. NFS Journal 2015. [DOI: 10.1016/j.nfs.2015.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Afshordel S, Hagl S, Werner D, Röhner N, Kögel D, Bazan NG, Eckert GP. Omega-3 polyunsaturated fatty acids improve mitochondrial dysfunction in brain aging--impact of Bcl-2 and NPD-1 like metabolites. Prostaglandins Leukot Essent Fatty Acids 2015; 92:23-31. [PMID: 24972878 DOI: 10.1016/j.plefa.2014.05.008] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 05/21/2014] [Accepted: 05/22/2014] [Indexed: 01/28/2023]
Abstract
The present study investigated the effects of orally administered long chain omega-3 polyunsaturated fatty acids (PUFA) on mitochondrial function and processing of the amyloid precursor protein (APP) in brains of young (3 months old) and aged (24 months old) NMRI-mice. Neuroprotective properties of fish oil (FO) (1.6 ml/kg p.o.) were assessed ex vivo after 21 days in dissociated brain cells (DBC) and isolated mitochondria. Docosahexaenoic acid (DHA) levels were significantly lower in blood and brains of aged mice which were compensated by FO administration. Isolated DBC and mitochondria from aged mice showed significantly lower adenosine triphosphate (ATP) levels and reduced activity of complexes I+II and IV of the mitochondrial respiration system, respectively. FO restored the age-related decrease in respiration and improved ATP production. Moreover, FO increased the levels of anti-apoptotic Bcl-2 protein. Cell membrane fractions isolated from the brain of aged mice exhibited lower membrane fluidity, which was partially improved under FO treatment. In comparison to young animals, levels of neuroprotective sAPPα were significantly lower in the brain of aged mice. However, levels of sAPPα, Aβ and C-terminal APP fragments (CTF) were largely unchanged after FO treatment in aged mice. Neuroprotectin D-1 (NPD-1) represents a neuroprotective compound that is derived from unesterified DHA. Levels of NPD1-like metabolites (NPD1-like) and of unesterified DHA were significantly increased in brains of aged mice. FO treatment further strongly increased NPD1-like levels indicating an accelerated conversion rate of free DHA to NPD1-like. Our findings provide new mechanisms underlying the neuroprotective actions of omega-3 PUFA and identified FO as a promising nutraceutical to delay age-related mitochondrial dysfunction in the brain.
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Affiliation(s)
- Sarah Afshordel
- Department of Pharmacology, Goethe-University of Frankfurt, D-60438 Frankfurt, Germany
| | - Stephanie Hagl
- Department of Pharmacology, Goethe-University of Frankfurt, D-60438 Frankfurt, Germany
| | - Deborah Werner
- Department of Pharmacology, Goethe-University of Frankfurt, D-60438 Frankfurt, Germany
| | - Nelli Röhner
- Experimental Neurosurgery, Center for Neurology and Neurosurgery, Goethe-University Hospital, Neuroscience Center, D-60590 Frankfurt, Germany
| | - Donat Kögel
- Experimental Neurosurgery, Center for Neurology and Neurosurgery, Goethe-University Hospital, Neuroscience Center, D-60590 Frankfurt, Germany
| | - Nicolas G Bazan
- LSU Neuroscience Center And Department of Ophthalmology, Louisiana State University, Health Sciences Center, School of Medicine, New Orleans, LA 70112, USA
| | - Gunter P Eckert
- Department of Pharmacology, Goethe-University of Frankfurt, D-60438 Frankfurt, Germany.
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Eckmann J, Clemens LE, Eckert SH, Hagl S, Yu-Taeger L, Bordet T, Pruss RM, Muller WE, Leuner K, Nguyen HP, Eckert GP. Mitochondrial membrane fluidity is consistently increased in different models of Huntington disease: restorative effects of olesoxime. Mol Neurobiol 2014; 50:107-18. [PMID: 24633813 DOI: 10.1007/s12035-014-8663-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 02/18/2014] [Indexed: 12/12/2022]
Abstract
Huntington disease (HD) is a fatal neurodegenerative disorder caused by a CAG repeat expansion in exon 1 of the huntingtin gene (HTT). One prominent target of the mutant huntingtin protein (mhtt) is the mitochondrion, affecting its morphology, distribution, and function. Thus, mitochondria have been suggested as potential therapeutic targets for the treatment of HD. Olesoxime, a cholesterol-like compound, promotes motor neuron survival and neurite outgrowth in vitro, and its effects are presumed to occur via a direct interaction with mitochondrial membranes (MMs). We examined the properties of MMs isolated from cell and animal models of HD as well as the effects of olesoxime on MM fluidity and cholesterol levels. MMs isolated from brains of aged Hdh Q111/Q111 knock-in mice showed a significant decrease in 1,6-diphenyl-hexatriene (DPH) anisotropy, which is inversely correlated with membrane fluidity. Similar increases in MM fluidity were observed in striatal STHdh Q111/Q111 cells as well as in MMs isolated from brains of BACHD transgenic rats. Treatment of STHdh cells with olesoxime decreased the fluidity of isolated MMs. Decreased membrane fluidity was also measured in olesoxime-treated MMs isolated from brains of HD knock-in mice. In both models, treatment with olesoxime restored HD-specific changes in MMs. Accordingly, olesoxime significantly counteracted the mhtt-induced increase in MM fluidity of MMs isolated from brains of BACHD rats after 12 months of treatment in vivo, possibly by enhancing MM cholesterol levels. Thus, olesoxime may represent a novel pharmacological tool to treat mitochondrial dysfunction in HD.
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Affiliation(s)
- Janett Eckmann
- Department of Pharmacology, Biocenter, Goethe-University Campus Riedberg, Biocentre Geb. N260, R.1.09, Max-von-Laue Str. 9, 60438, Frankfurt, Germany
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Hagl S, Kocher A, Schiborr C, Eckert SH, Ciobanu I, Birringer M, El-Askary H, Helal A, Khayyal MT, Frank J, Muller WE, Eckert GP. Rice bran extract protects from mitochondrial dysfunction in guinea pig brains. Pharmacol Res 2013; 76:17-27. [PMID: 23827162 DOI: 10.1016/j.phrs.2013.06.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 06/13/2013] [Accepted: 06/18/2013] [Indexed: 01/08/2023]
Abstract
Mitochondrial dysfunction plays a major role in the development of age-related neurodegenerative diseases and recent evidence suggests that food ingredients can improve mitochondrial function. In the current study we investigated the effects of feeding a stabilized rice bran extract (RBE) on mitochondrial function in the brain of guinea pigs. Key components of the rice bran are oryzanols, tocopherols and tocotrienols, which are supposed to have beneficial effects on mitochondrial function. Concentrations of α-tocotrienol and γ-carboxyethyl hydroxychroman (CEHC) but not γ-tocotrienol were significantly elevated in brains of RBE fed animals and thus may have provided protective properties. Overall respiration and mitochondrial coupling were significantly enhanced in isolated mitochondria, which suggests improved mitochondrial function in brains of RBE fed animals. Cells isolated from brains of RBE fed animals showed significantly higher mitochondrial membrane potential and ATP levels after sodium nitroprusside (SNP) challenge indicating resistance against mitochondrial dysfunction. Experimental evidence indicated increased mitochondrial mass in guinea pig brains, e.g. enhanced citrate synthase activity, increased cardiolipin as well as respiratory chain complex I and II and TIMM levels. In addition levels of Drp1 and fis1 were also increased in brains of guinea pigs fed RBE, indicating enhanced fission events. Thus, RBE represents a potential nutraceutical for the prevention of mitochondrial dysfunction and oxidative stress in brain aging and neurodegenerative diseases.
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Schwarzkopf TM, Hagl S, Eckert GP, Klein J. Neuroprotection by bilobalide in ischemia: improvement of mitochondrial function. Pharmazie 2013; 68:584-589. [PMID: 23923641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Bilobalide, an active constituent of Ginkgo biloba, is known to have neuroprotective properties, but its mode of action remains unclear. In this study, bilobalide significantly reduced brain damage in mice (indicated by TTC staining) when given before transient middle cerebral artery occlusion (tMCAO). As measured by microdialysis in the ischemic striatum, local perfusion with bilobalide (10 microM) reduced ischemia-induced glutamate release by 70% while glucose levels were not affected. Mitochondria isolated from ischemic brain showed a decrease of respiration compared to non-ischemic controls. Treatment with bilobalide (10 mg/kg) before tMCAO improved respiratory capacity of complex I significantly when measured ex vivo. In addition, mitochondrial swelling induced ex vivo by calcium was used to estimate opening of the mitochondrial permeability transition pore. In this assay, the changes induced by tMCAO were completely reversed when mice had received pretreatment with bilobalide. We conclude that neuroprotection by bilobalide involves a mechanism in which the drug reverses ischemia-induced changes in mitochondria, leading to a reduction of glutamate release.
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Affiliation(s)
- T M Schwarzkopf
- Pharmakologisches Institut für Naturwissenschaftler, Goethe Universittit Frankfurt am Main, Germany
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Eckert GP, Renner K, Eckert SH, Eckmann J, Hagl S, Abdel-Kader RM, Kurz C, Leuner K, Muller WE. Mitochondrial Dysfunction—A Pharmacological Target in Alzheimer's Disease. Mol Neurobiol 2012; 46:136-50. [DOI: 10.1007/s12035-012-8271-z] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2012] [Accepted: 04/16/2012] [Indexed: 12/12/2022]
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Hagl S, Deusser H, Soyalan B, Janzowski C, Will F, Dietrich H, Albert FW, Rohner S, Richling E. Colonic availability of polyphenols and D
-(−)-quinic acid after apple smoothie consumption. Mol Nutr Food Res 2010; 55:368-77. [DOI: 10.1002/mnfr.201000252] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Revised: 08/31/2010] [Accepted: 09/06/2010] [Indexed: 12/20/2022]
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Osswald BR, Tochtermann U, Keller S, Badowski-Zyla D, Gegouskov V, Thomas G, Jakob HG, Hagl S. Myocardial infarction: an important factor for surgical decision making? Thorac Cardiovasc Surg 2009; 57:130-4. [PMID: 19330748 DOI: 10.1055/s-2008-1039104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND Recent myocardial infarction has been identified as a risk factor and is currently used as a strong predictor in different scores. The aim of our study was to determine whether the impact of myocardial infarction, especially acute myocardial infarction, is still strong enough to justify a restrictive indication for isolated CABG procedure in patients with significant coronary artery disease. METHODS 10 272 patients underwent isolated CABG at a single institution. A 10-year follow-up was performed with a completeness of 97.2 %. RESULTS 6 107 (59.5 %) of the patients had a history of myocardial infarction. A stratified Kaplan-Meier analysis demonstrates a significantly worse survival for patients with myocardial infarction (chi-square value: 36.7, P < 0.0001). At a further differentiation for no myocardial infarction (n = 4 165), myocardial infarction > 90 days (n = 4 578), myocardial infarction up to 90 days (recent myocardial infarction) (n = 1 266) and ongoing acute myocardial infarction up to 15 days (n = 263), indicated a higher mortality for the more recent infarction in the univariate analysis. However, if patients with acute myocardial infarction in the past 6 years were analyzed separately, their risk remained at the same level as patients with non-acute myocardial infarction over the total observation period. Furthermore, propensity score matching revealed no statistical significant difference in the outcome of the patients. CONCLUSIONS Structural myocardial damage represents a risk factor for survival after isolated CABG in univariate analysis. More appropriate statistical methods indicate a time-dependent loss of statistically relevant differences between patients with or without myocardial infarction prior to CABG. This is also true for "recent" myocardial infarction which is still part of current scores.
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Affiliation(s)
- B R Osswald
- Department of Thoracic and Cardiovascular Surgery, University of Essen, Essen, Germany.
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Osswald BR, Thomas G, Hagl S, Karck M, Sergeant P, Jakob HG. Evaluation of early mortality within 30 days? A matter of systematic error. Thorac Cardiovasc Surg 2009. [DOI: 10.1055/s-0029-1191329] [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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Beller CJ, Labrosse MR, Hagl S, Gebhard MM, Karck M. Aortic root motion remodeling after aortic valve replacement - implications for late aortic dissection. Interact Cardiovasc Thorac Surg 2008; 7:407-11; discussion 411. [DOI: 10.1510/icvts.2007.166835] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Schmaltz AA, Bauer U, Baumgartner H, Cesnjevar R, de Haan F, Franke C, Gabriel H, Gohlke-Bärwolf C, Hagl S, Hess J, Hofbeck M, Kaemmerer H, Kallfelz HC, Lange PE, Nock H, Oechslin E, Schirmer KR, Tebbe U, Trindade PT, Weyand M, Breithardt G. Medizinische Leitlinie zur Behandlung von Erwachsenen mit angeborenen Herzfehlern (EMAH). Clin Res Cardiol 2008; 97:194-214. [DOI: 10.1007/s00392-008-0639-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Arnold R, Loukanov T, Sebening C, Ley-Zaporozhan J, Ley S, Hagl S, Kleber JB, Karck M, Gorenflo M. Outcome after mechanical aortic valve replacement in children and young adults. Thorac Cardiovasc Surg 2008. [DOI: 10.1055/s-2008-1037914] [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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Osswald B, Tochtermann U, Keller S, Badowski-Zyla D, Gegouskov V, Thomas G, Jakob H, Hagl S. Myocardial infarction – An important factor for surgical decision-making? Thorac Cardiovasc Surg 2008. [DOI: 10.1055/s-2008-1037697] [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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Osswald B, Thomas G, Tochtermann U, Gegouskov V, Badowski-Zyla D, Thielmann M, Massoudy P, Jakob H, Hagl S. Risk score – valuable tool for individual risk assessment? Thorac Cardiovasc Surg 2008. [DOI: 10.1055/s-2008-1037864] [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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Loukanov T, Sebening C, Springer W, Khalil M, Ulmer H, Hagl S, Karck M, Gorenflo M. Replacement of valved right ventricular (RV) to pulmonary artery (PA) conduits – an observational study with focus on right ventricular geometry. Thorac Cardiovasc Surg 2008. [DOI: 10.1055/s-2008-1037723] [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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Loukanov T, Sebening C, Hagl S, Karck M, Springer W, Gorenflo M. Pulmonary artery sling syndrom – reoperations for untreated tracheal stenosis. Thorac Cardiovasc Surg 2008. [DOI: 10.1055/s-2008-1037961] [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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Osswald B, Gegouskov V, Badowski-Zyla D, Tochtermann U, Thomas G, Jakob H, Hagl S. Venous graft – always a worse choice? Thorac Cardiovasc Surg 2008. [DOI: 10.1055/s-2008-1037778] [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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Loukanov T, Gorenflo M, Sebening C, Springer W, Eichhorn J, Ulmer H, Hagl S. Surgical Treatment of Long-Segment Tracheal Anomalies in Infants and Children. Thorac Cardiovasc Surg 2007; 55:375-9. [PMID: 17721847 DOI: 10.1055/s-2007-965381] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Tracheal stenosis in combination with vascular and/or cardiac anomalies is a life-threatening condition in infants and children presenting with severe symptoms of airway obstruction. The optimal surgical treatment of these cases remains controversial. OBJECTIVES We present here a group of infants and children with combined tracheal malformations and vascular and/or cardiac anomalies. More than 30 % of the stenotic trachea was resected in a subgroup of the patients. A reconstruction with end-to-end anastomosis was achieved on the basis of extensive mobilization of the whole tracheobronchial tree and use of CPB. METHODS The clinical outcome in 37 children with a median age of 8 (1 - 72) months was analyzed retrospectively. The patients presented with severe airway obstruction in combination with congenital heart defects and/or vascular anomalies. Cardiac catheterization, bronchoscopy and thoracic computer tomography were performed prior to operation. The operations were performed under CPB and consisted of tracheal resection with end-to-end anastomosis or external stabilization. Associated intracardiac and vascular anomalies were repaired simultaneously. RESULTS All but 1 patient survived and had a straightforward recovery. The patients were extubated under bronchoscopic control with a median intubation time after airway repair of 12.2 days. The average follow-up was 8.4 years (1 - 14 years) and the surviving patients did not show signs of restenosis clinically. A segment longer than 30 % of the tracheal length was resected and reconstructed with end-to-end anastomosis in 57 % of the patients (12 of 21 patients). CONCLUSIONS Our experience demonstrates that resection of tracheal stenosis and end-to-end anastomosis can be achieved successfully even in cases with stenosis of more than 30 % of the total tracheal length. The use of CBP allowed extensive mobilization of the tracheobronchial tree and resection with end-to-end tension-free anastomotic reconstruction.
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Affiliation(s)
- T Loukanov
- Department of Cardiac Surgery, University of Heidelberg, Heidelberg, Germany.
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Gegouskov V, Tochtermann U, Badowski-Zyla D, Thomas G, Hagl S, Osswald B. Long-Term Results after Coronary Artery Reconstructive Surgery. Thorac Cardiovasc Surg 2007; 55:293-7. [PMID: 17629858 DOI: 10.1055/s-2007-965061] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND Diffuse coronary artery disease, multiple consecutive stenoses and complex lesions are a common finding in coronary surgery. Coronary reconstructive surgery in terms of extended anastomoses with or without thromboendarterectomy is still controversially discussed. The aim of this study was to evaluate the long-term results of patients who underwent coronary reconstruction. METHODS Between January 1995 and June 2004, 640 consecutive, unselected patients underwent isolated CABG with coronary reconstructive surgery of the LAD at a single institution. A cross-sectional long-term follow-up was performed with a completeness of 99.2 %. Questionnaires were sent to all patients with a response rate of 83.2 % (n = 533). RESULTS 147 of the 640 patients (22.9 %) died during up the follow-up period which was up to 10 years. Of the 371 patients who responded to the questionnaires, the status of 54 patients (15.9 %), predominantly those with a preoperative lower NYHA class, remained unchanged, while 294 patients (79.2 %) improved by at least one NYHA class. Repeat angiography was performed in 80 patients (15.7 %). Indications for percutaneous coronary intervention for the LAD arose in 4 cases (0.8 %); the interventions were performed in the proximal (n = 2) or distal (n = 1) LAD and one intervention affected the anastomotic area. Redo CABG was necessary in 3 patients (0.5 %). CONCLUSIONS Coronary reconstruction in patients with complex coronary morphology and advanced diffuse CAD is in an additionally investigated subgroup of patients associated with a satisfying graft patency and excellent long-term results in terms of survival, NYHA class and reintervention rate.
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Affiliation(s)
- V Gegouskov
- Department of Cardiac Surgery, University of Heidelberg, Heidelberg, Germany.
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Koch A, Schmidt CI, Dengler TJ, Remppis A, Sack FU, Schirmacher P, Hagl S, Karck M, Schnabel PA. Differentiated expression patterns of growth factors in routine formalin-fixed endomyocardial biopsies in the early postoperative phase after heart transplantation. Transplant Proc 2007; 39:554-7. [PMID: 17362780 DOI: 10.1016/j.transproceed.2006.12.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Platelet-derived growth factor (PDGF) and fibroblast growth factor (FGF) seem to play a key role in immunological reactions shortly after heart transplantation (HTx). The aim of this study was to analyze the time course of the expression of PDGF A and B, PDGF-receptor alpha (PDGF-Ralpha) and beta, aFGF, and bFGF on formalin-fixed routine endomyocardial biopsies. PATIENTS AND METHODS Right ventricular endomyocardial biopsies were obtained from 36 heart transplant recipients up to 2 weeks after HTx. According to the clinical course in the first postoperative year, 3 groups were formed: (1) clinically uneventful course (n = 12); (2) cardiac/systemic infections (n = 12); (3) acute rejection (n = 12). The growth factor expression was examined immunohistochemically. RESULTS In the early phase after HTx, PDGF A, PDGF B, PDGF-Ralpha, and PDGF-Rbeta were predominantly expressed in endothelial cells. The main expression of PDGF-Ralpha and bFGF was found in cardiomyocytes, endothelial cells, and smooth muscle cells. During the first 2 postoperative weeks, PDGF A, PDGF B, and PDGF-Rbeta showed a similar time course of expression: A significantly elevated expression in the first week was followed by a decrease in the second week. In the rejection group, PDGF A was significantly elevated after the first week. CONCLUSIONS The increased expression of PDGF in the first postoperative week can be interpreted as an unspecific reaction to peritransplant injury. The prolonged expression of PDGF A, PDGF B, and PDGF-Rbeta showed that there were ongoing immunological reactions in the transplant during week 2. The persistence of elevated PDGF A expression might be of prognostic value in terms of a risk factor for either infection or rejection.
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Affiliation(s)
- A Koch
- Department of Cardiac Surgery, University of Heidelberg, Heidelberg, Germany.
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Szabó G, Heger U, Michel-Gröschel C, Szabó C, Hagl S, Bährle S. 141: Inhibition of poly (ADP-ribose) polymerase improves endothelial and myocardial function after brain death. J Heart Lung Transplant 2007. [DOI: 10.1016/j.healun.2006.11.157] [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: 11/27/2022] Open
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Tochtermann U, Keller S, Badowski-Zyla D, Gegouskov V, Thomas G, Hagl S, Osswald BR. Is CABG in acute myocardial infarction justified? Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967390] [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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Szabó G, Beller CJ, Seres L, Gorenflo M, Sonnenberg K, Hagl S. Tetrahydrobiopterin improves cardiac and pulmonary function after cardiopulmonary bypass. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967538] [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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Loganathan S, Radovits T, Wiratonseng I, Veres G, Hütter J, Hagl S, Szabó G. Effects of Vardenafil, a selective phosphodiesterase-5-inhibitor, on cardiovascular function in a rat model. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967293] [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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Szabó G, Heger U, Miesel-Gröschel C, Radovits T, Bährle S, Weigang E, Szabó C, Hagl S. Inhibition of poly (ADP-Ribose) polymerase improves endothelial and myocardial function after brain death. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967687] [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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Szabó G, Bulut C, Hagl S. Constrictive pericarditis: pre-operative risk adjusted survival after total pericardiectomy. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967461] [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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39
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Szabó G, Veres G, Radovits T, Miesel-Gröschel C, Hagl S. Is cardiopulmonary bypass responsible for systemic infalammation and cardiovascular dysfunction after cardiac surgery? Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967548] [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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40
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Szabó G, Radovits T, Koch A, Beller CJ, Veres G, Hagl S. FP15, a novel peroxynitrite decomposition catalyst reduces reperfusion injury in a rat heart transplantation model. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967539] [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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41
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De Simone R, Hoda R, Wolf I, Mottl-Link S, Mikhail B, Meinzer HP, Karck M, Hagl S. Study of different patterns of left ventricular remodeling in patients with functional mitral regurgitation and coronary artery disease. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967713] [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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42
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De Simone R, Hoda R, Mottl-Link S, Wolf I, Meinzer HP, Karck M, Hagl S. Comparison of three methods for quantitative assessment of left ventricular volume and ejection fraction by three-dimensional echocardiography and magnetic resonance imaging. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967477] [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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43
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Denk K, Kayhan N, Peivandi AA, Hagl S, Vahl CF. Left Ventricular Force production in 3 vessel disease in patients with and without preceeding intracoronary stent procedures. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967493] [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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44
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Osswald BR, Blackstone EH, Tochtermann U, Badowski-Zyla D, Gegouskov V, Hagl S. Neutralization of risk factors – a silent process of high impact. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967275] [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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45
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Kayhan N, Peivandi AA, Stumpf NA, Gaffga U, Hagl S, Vahl CF. Is the optimal temperature for weaning from extracorporeal circulation different in failing compared to normal human myocardium? Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967645] [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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46
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Hoda MR, Wolf I, Mottl-Link S, Seidel M, Meinzer HP, Hagl S, De Simone R. A new multimodal imaging technique for virtual planning of mitral valve repair. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967479] [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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47
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Beller CJ, Radovits T, Kosse J, Becker A, Berger I, Hagl S, Szabó G. Different effects of statin treatment on endothelial dysfunction in the coronary and carotid arteries of hypercholesterolemic pigs. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967421] [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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48
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Kayhan N, Edler K, Albers J, Wahn B, Peivandi AA, Hagl S, Vahl CF. Frank Starling Mechanisms: Dangerous one-way road in failing human myocardium? Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967605] [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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49
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Radovits T, Zotkina J, Lin LN, Gerő D, Veres G, Hagl S, Szabó C, Szabó G. Single dose treatment with PARP-inhibitor INO-1001 improves cardiovascular dysfunction associated with advanced aging. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967556] [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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50
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Hoda MR, Vetter HO, Hagl S, De Simone R. Kinetics of systemic stress hormone release during open heart surgery. Thorac Cardiovasc Surg 2007. [DOI: 10.1055/s-2007-967649] [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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