1
|
Leibing T, Riedel A, Xi Y, Adrian M, Krzistetzko J, Kirkamm C, Dormann C, Schledzewski K, Goerdt S, Géraud C. Deficiency for scavenger receptors Stabilin-1 and Stabilin-2 leads to age-dependent renal and hepatic depositions of fasciclin domain proteins TGFBI and Periostin in mice. Aging Cell 2023; 22:e13914. [PMID: 37357460 PMCID: PMC10497815 DOI: 10.1111/acel.13914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 05/19/2023] [Accepted: 06/03/2023] [Indexed: 06/27/2023] Open
Abstract
Stabilin-1 (Stab1) and Stabilin-2 (Stab2) are two major scavenger receptors of liver sinusoidal endothelial cells that mediate removal of diverse molecules from the plasma. Double-knockout mice (Stab-DKO) develop impaired kidney function and a decreased lifespan, while single Stabilin deficiency or therapeutic inhibition ameliorates atherosclerosis and Stab1-inhibition is subject of clinical trials in immuno-oncology. Although POSTN and TFGBI have recently been described as novel Stabilin ligands, the dynamics and functional implications of these ligands have not been comprehensively studied. Immunofluorescence, Western Blotting and Simple Western™ as well as in situ hybridization (RNAScope™) and qRT-PCR were used to analyze transcription levels and tissue distribution of POSTN and TGFBI in Stab-KO mice. Stab-POSTN-Triple deficient mice were generated to assess kidney and liver fibrosis and function in young and aged mice. TGFBI and POSTN protein accumulated in liver tissue in Stab-DKO mice and age-dependent in glomeruli of Stabilin-deficient mice despite unchanged transcriptional levels. Stab-POSTN-Triple KO mice showed glomerulofibrosis and a reduced lifespan comparable to Stab-DKO mice. However, alterations of the glomerular diameter and vascular density were partially normalized in Stab-POSTN-Triple KO. TGFBI and POSTN are Stabilin-ligands that are deposited in an age-dependent manner in the kidneys and liver due to insufficient scavenging in the liver. Functionally, POSTN might partially contribute to the observed renal phenotype in Stab-DKO mice. This study provides details on downstream effects how Stabilin dysfunction affects organ function on a molecular and functional level.
Collapse
Affiliation(s)
- Thomas Leibing
- Department of Dermatology, Venereology and Allergology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Section of Clinical and Molecular Dermatology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Anna Riedel
- Department of Dermatology, Venereology and Allergology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Section of Clinical and Molecular Dermatology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Yannick Xi
- Department of Dermatology, Venereology and Allergology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Section of Clinical and Molecular Dermatology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Monica Adrian
- Department of Dermatology, Venereology and Allergology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Section of Clinical and Molecular Dermatology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Jessica Krzistetzko
- Department of Dermatology, Venereology and Allergology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Section of Clinical and Molecular Dermatology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Christof Kirkamm
- Department of Dermatology, Venereology and Allergology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Section of Clinical and Molecular Dermatology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Christof Dormann
- Department of Dermatology, Venereology and Allergology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Section of Clinical and Molecular Dermatology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Kai Schledzewski
- Department of Dermatology, Venereology and Allergology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Sergij Goerdt
- Department of Dermatology, Venereology and Allergology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- European Center for Angioscience (ECAS), Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| | - Cyrill Géraud
- Department of Dermatology, Venereology and Allergology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- Section of Clinical and Molecular Dermatology, University Medical Center and Medical Faculty MannheimHeidelberg UniversityMannheimGermany
- European Center for Angioscience (ECAS), Medical Faculty MannheimHeidelberg UniversityMannheimGermany
| |
Collapse
|
2
|
Krzistetzko J, Géraud C, Dormann C, Riedel A, Leibing T. Association of Differentially Altered Liver Fibrosis with Deposition of TGFBi in Stabilin-Deficient Mice. Int J Mol Sci 2023; 24:10969. [PMID: 37446152 DOI: 10.3390/ijms241310969] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/28/2023] [Accepted: 06/29/2023] [Indexed: 07/15/2023] Open
Abstract
Liver sinusoidal endothelial cells (LSECs) control clearance of Transforming growth factor, beta-induced, 68kDa (TGFBi) and Periostin (POSTN) through scavenger receptors Stabilin-1 (Stab1) and Stabilin-2 (Stab2). Stabilin inhibition can ameliorate atherosclerosis in mouse models, while Stabilin-double-knockout leads to glomerulofibrosis. Fibrotic organ damage may pose a limiting factor in future anti-Stabilin therapies. While Stab1-deficient (Stab1-/-) mice were shown to exhibit higher liver fibrosis levels upon challenges, fibrosis susceptibility has not been studied in Stab2-deficient (Stab2-/-) mice. Wildtype (WT), Stab1-/- and Stab2-/- mice were fed experimental diets, and local ligand abundance, hepatic fibrosis, and ligand plasma levels were measured. Hepatic fibrosis was increased in both Stab1-/- and Stab2-/- at baseline. A pro-fibrotic short Methionine-Choline-deficient (MCD) diet induced slightly increased liver fibrosis in Stab1-/- and Stab2-/- mice. A Choline-deficient L-amino acid-defined (CDAA) diet induced liver fibrosis of similar distribution and extent in all genotypes (WT, Stab1-/- and Stab2-/-). A hepatic abundance of Stabilin ligand TGFBi correlated very highly with liver fibrosis levels. In contrast, plasma levels of TGFBi were increased only in Stab2-/- mice after the CDAA diet but not the MCD diet, indicating the differential effects of these diets. Here we show that a single Stabilin deficiency of either Stab1 or Stab2 induces mildly increased collagen depositions under homeostatic conditions. Upon experimental dietary challenge, the local abundance of Stabilin ligand TGFBi was differentially altered in Stabilin-deficient mice, indicating differentially affected LSEC scavenger functions. Since anti-Stabilin-directed therapies are in clinical evaluation for the treatment of diseases, these findings bear relevance to treatment with novel anti-Stabilin agents.
Collapse
Affiliation(s)
- Jessica Krzistetzko
- Department of Dermatology, Venereology, and Allergology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, 68135 Mannheim, Germany
- Section of Clinical and Molecular Dermatology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, 68135 Mannheim, Germany
| | - Cyrill Géraud
- Department of Dermatology, Venereology, and Allergology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, 68135 Mannheim, Germany
- Section of Clinical and Molecular Dermatology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, 68135 Mannheim, Germany
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, 68135 Mannheim, Germany
| | - Christof Dormann
- Department of Dermatology, Venereology, and Allergology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, 68135 Mannheim, Germany
- Section of Clinical and Molecular Dermatology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, 68135 Mannheim, Germany
| | - Anna Riedel
- Department of Dermatology, Venereology, and Allergology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, 68135 Mannheim, Germany
- Section of Clinical and Molecular Dermatology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, 68135 Mannheim, Germany
| | - Thomas Leibing
- Department of Dermatology, Venereology, and Allergology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, 68135 Mannheim, Germany
- Section of Clinical and Molecular Dermatology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, 68135 Mannheim, Germany
| |
Collapse
|
3
|
Roy-Luzarraga M, Reynolds LE, de Luxán-Delgado B, Maiques O, Wisniewski L, Newport E, Rajeeve V, Drake RJ, Gómez-Escudero J, Richards FM, Weller C, Dormann C, Meng YM, Vermeulen PB, Saur D, Sanz-Moreno V, Wong PP, Géraud C, Cutillas PR, Hodivala-Dilke K. Suppression of Endothelial Cell FAK Expression Reduces Pancreatic Ductal Adenocarcinoma Metastasis after Gemcitabine Treatment. Cancer Res 2022; 82:1909-1925. [PMID: 35350066 PMCID: PMC9381116 DOI: 10.1158/0008-5472.can-20-3807] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/07/2022] [Accepted: 03/25/2022] [Indexed: 02/02/2023]
Abstract
Despite substantial advances in the treatment of solid cancers, resistance to therapy remains a major obstacle to prolonged progression-free survival. Pancreatic ductal adenocarcinoma (PDAC) is one of the most aggressive cancers, with a high level of liver metastasis. Primary PDAC is highly hypoxic, and metastases are resistant to first-line treatment, including gemcitabine. Recent studies have indicated that endothelial cell (EC) focal adhesion kinase (FAK) regulates DNA-damaging therapy-induced angiocrine factors and chemosensitivity in primary tumor models. Here, we show that inducible loss of EC-FAK in both orthotopic and spontaneous mouse models of PDAC is not sufficient to affect primary tumor growth but reduces liver and lung metastasis load and improves survival rates in gemcitabine-treated, but not untreated, mice. EC-FAK loss did not affect primary tumor angiogenesis, tumor blood vessel leakage, or early events in metastasis, including the numbers of circulating tumor cells, tumor cell homing, or metastatic seeding. Phosphoproteomics analysis showed a downregulation of the MAPK, RAF, and PAK signaling pathways in gemcitabine-treated FAK-depleted ECs compared with gemcitabine-treated wild-type ECs. Moreover, low levels of EC-FAK correlated with increased survival and reduced relapse in gemcitabine-treated patients with PDAC, supporting the clinical relevance of these findings. Altogether, we have identified a new role of EC-FAK in regulating PDAC metastasis upon gemcitabine treatment that impacts outcome. SIGNIFICANCE These findings establish the potential utility of combinatorial endothelial cell FAK targeting together with gemcitabine in future clinical applications to control metastasis in patients with pancreatic ductal adenocarcinoma.
Collapse
Affiliation(s)
- Marina Roy-Luzarraga
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Louise E. Reynolds
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Beatriz de Luxán-Delgado
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Oscar Maiques
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Laura Wisniewski
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Emma Newport
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Vinothini Rajeeve
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Rebecca J.G. Drake
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Jesús Gómez-Escudero
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Frances M. Richards
- Translational Medicine Operations, Astrazeneca Oncology, Darwin Building, Cambridge Science Park, Milton Road, Cambridge, United Kingdom
| | - Céline Weller
- Department of Dermatology, Section of Clinical and Molecular Dermatology, Venereology and Allergology, University Medical Center and European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Christof Dormann
- Department of Dermatology, Section of Clinical and Molecular Dermatology, Venereology and Allergology, University Medical Center and European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Ya-Ming Meng
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Peter B. Vermeulen
- Department of Oncological Research, Translational Cancer Research Unit, Oncology Center GZA—GZA Hospitals St. Augustinus and University of Antwerp, Antwerp, Belgium
| | - Dieter Saur
- Division of Translational Cancer Research, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Heidelberg and Chair of Translational Cancer Research and Institute for Experimental Cancer Therapy, Klinikum rechts der Isar, School of Medicine, Technische Universität München, München, Germany
| | - Victoria Sanz-Moreno
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Ping-Pui Wong
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Cyrill Géraud
- Department of Dermatology, Section of Clinical and Molecular Dermatology, Venereology and Allergology, University Medical Center and European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Pedro R. Cutillas
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| | - Kairbaan Hodivala-Dilke
- Barts Cancer Institute—A CR-UK Center of Excellence, Queen Mary University of London, John Vane Science Center, Charterhouse Square, London, United Kingdom
| |
Collapse
|
4
|
Pollari F, Kališnik J, Vogt F, Steblovnik K, Dormann C, Jessl J, Fischlein T, Pfeiffer S. Simplified Acute Physiology Score II Predicts Mortality and Length of Stay Better than EuroSCOREs in Patients Undergoing Transcatheter Aortic Valve Implantation: A Single-Center Experience. Thorac Cardiovasc Surg 2019. [DOI: 10.1055/s-0039-1679013] [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: 10/27/2022]
Affiliation(s)
- F. Pollari
- Paracelsus Medical University, Klinikum Nürnberg, Herzchirurgie, Nürnberg, Germany
| | - J. Kališnik
- Paracelsus Medical University, Klinikum Nürnberg, Herzchirurgie, Nürnberg, Germany
- University Medical Center, Ljubljana, Cardiovascular Surgery, Ljubljana, Slovenia
| | - F. Vogt
- Paracelsus Medical University, Klinikum Nürnberg, Herzchirurgie, Nürnberg, Germany
| | - K. Steblovnik
- University Medical Center, Ljubljana, Cardiology, Ljubljana, Slovenia
| | - C. Dormann
- Paracelsus Medical University, Nürnberg, Germany
| | - J. Jessl
- Paracelsus Medical University, Klinikum Nürnberg, Kardiologie, Nürnberg, Germany
| | - T. Fischlein
- Paracelsus Medical University, Klinikum Nürnberg, Herzchirurgie, Nürnberg, Germany
| | - S. Pfeiffer
- Paracelsus Medical University, Klinikum Nürnberg, Herzchirurgie, Nürnberg, Germany
| |
Collapse
|
5
|
Kronenberg G, Petermann M, Dormann C, Bader M, Gass P, Hellweg R, Klempin F. Brain serotonin critically contributes to the biological effects of electroconvulsive seizures. Eur Arch Psychiatry Clin Neurosci 2018; 268:861-864. [PMID: 30019210 DOI: 10.1007/s00406-018-0924-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [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: 01/26/2018] [Accepted: 07/09/2018] [Indexed: 10/28/2022]
Abstract
Compounds targeting serotonin (5-HT) are widely used as antidepressants. However, the role of 5-HT in mediating the effects of electroconvulsive seizure (ECS) therapy remains undefined. Using Tph2-/- mice depleted of brain 5-HT, we studied the effects of ECS on behavior and neurobiology. ECS significantly prolonged the start latency in the elevated O-Maze test, an effect that was abolished in Tph2-/- mice. Furthermore, in the absence of 5-HT, the ECS-induced increase in adult neurogenesis and in brain-derived neurotrophic factor signaling in the hippocampus were significantly reduced. Our results indicate that brain 5-HT critically contributes to the neurobiological responses to ECS.
Collapse
Affiliation(s)
- Golo Kronenberg
- Klinik und Poliklinik für Psychiatrie und Psychotherapie, Universitätsmedizin Rostock, 18147, Rostock, Germany.,Department of Psychiatry and Psychotherapy, Charité-University Medicine Berlin, Charitéplatz 1, 10117, Berlin, Germany.,Berlin Institute of Health, 10178, Berlin, Germany
| | - Markus Petermann
- Berlin Institute of Health, 10178, Berlin, Germany.,Max Delbruck Center for Molecular Medicine (MDC), 13125, Berlin, Germany
| | - Christof Dormann
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health Mannheim (CIMH), University of Heidelberg, J 5, 68159, Mannheim, Germany
| | - Michael Bader
- Berlin Institute of Health, 10178, Berlin, Germany.,Max Delbruck Center for Molecular Medicine (MDC), 13125, Berlin, Germany.,Charité-University Medicine Berlin, 10117, Berlin, Germany
| | - Peter Gass
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health Mannheim (CIMH), University of Heidelberg, J 5, 68159, Mannheim, Germany
| | - Rainer Hellweg
- Department of Psychiatry and Psychotherapy, Charité-University Medicine Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Friederike Klempin
- Department of Psychiatry and Psychotherapy, Charité-University Medicine Berlin, Charitéplatz 1, 10117, Berlin, Germany. .,Berlin Institute of Health, 10178, Berlin, Germany. .,Max Delbruck Center for Molecular Medicine (MDC), 13125, Berlin, Germany.
| |
Collapse
|
6
|
Pollari F, Cuomo M, Vogt F, Kalisnik J, Dormann C, Jessl J, Fischlein T, Pfeiffer S. RF93 UTILITY OF SIMPLIFIED ACUTE PHYSIOLOGY SCORE II AS OUTCOMEʼS PREDICTOR FOR TAVI. J Cardiovasc Med (Hagerstown) 2018. [DOI: 10.2459/01.jcm.0000550040.97388.59] [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: 11/05/2022]
|
7
|
Hammad S, Othman A, Meyer C, Telfah A, Lambert J, Dewidar B, Werle J, Nwosu ZC, Mahli A, Dormann C, Gao Y, Gould K, Han M, Yuan X, Gogiashvili M, Hergenröder R, Hellerbrand C, Thomas M, Ebert MP, Amasheh S, Hengstler JG, Dooley S. Confounding influence of tamoxifen in mouse models of Cre recombinase-induced gene activity or modulation. Arch Toxicol 2018; 92:2549-2561. [PMID: 29974145 DOI: 10.1007/s00204-018-2254-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 03/04/2018] [Accepted: 06/26/2018] [Indexed: 12/11/2022]
Abstract
Tamoxifen (TAM) is commonly used for cell type specific Cre recombinase-induced gene inactivation and in cell fate tracing studies. Inducing a gene knockout by TAM and using non-TAM exposed mice as controls lead to a situation where differences are interpreted as consequences of the gene knockout but in reality result from TAM-induced changes in hepatic metabolism. The degree to which TAM may compromise the interpretation of animal experiments with inducible gene expression still has to be elucidated. Here, we report that TAM strongly attenuates CCl4-induced hepatotoxicity in male C57Bl/6N mice, even after a 10 days TAM exposure-free period. TAM decreased (p < 0.0001) the necrosis index and the level of aspartate- and alanine transaminases in CCl4-treated compared to vehicle-exposed mice. TAM pretreatment also led to the downregulation of CYP2E1 (p = 0.0045) in mouse liver tissue, and lowered its activity in CYP2E1 expressing HepG2 cell line. Furthermore, TAM increased the level of the antioxidant ascorbate, catalase, SOD2, and methionine, as well as phase II metabolizing enzymes GSTM1 and UGT1A1 in CCl4-treated livers. Finally, we found that TAM increased the presence of resident macrophages and recruitment of immune cells in necrotic areas of the livers as indicated by F4/80 and CD45 staining. In conclusion, we reveal that TAM increases liver resistance to CCl4-induced toxicity. This finding is of high relevance for studies using the tamoxifen-inducible expression system particularly if this system is used in combination with hepatotoxic compounds such as CCl4.
Collapse
Affiliation(s)
- Seddik Hammad
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany.
- Department of Forensic Medicine and Veterinary Toxicology, Faculty of Veterinary Medicine, South Valley University, 83523, Qena, Egypt.
| | - Amnah Othman
- Leibniz Institut für analytische Wissenschaften, ISAS e.V., 44139 Dortmund, Germany
| | - Christoph Meyer
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Ahmad Telfah
- Leibniz Institut für analytische Wissenschaften, ISAS e.V., 44139 Dortmund, Germany
| | - Joerg Lambert
- Leibniz Institut für analytische Wissenschaften, ISAS e.V., 44139 Dortmund, Germany
| | - Bedair Dewidar
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tanta University, 31527, Tanta, Egypt
| | - Julia Werle
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Zeribe Chike Nwosu
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Abdo Mahli
- Institute of Biochemistry (Emil-Fischer Zentrum), Friedrich-Alexander University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Christof Dormann
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Yan Gao
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Kerry Gould
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Mei Han
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Xiaodong Yuan
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Mikheil Gogiashvili
- Leibniz Institut für analytische Wissenschaften, ISAS e.V., 44139 Dortmund, Germany
| | - Roland Hergenröder
- Leibniz Institut für analytische Wissenschaften, ISAS e.V., 44139 Dortmund, Germany
| | - Claus Hellerbrand
- Institute of Biochemistry (Emil-Fischer Zentrum), Friedrich-Alexander University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Maria Thomas
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology and University of Tuebingen, Stuttgart, Germany
| | - Matthias Philip Ebert
- Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Salah Amasheh
- Department of Veterinary Medicine, Institute of Veterinary Physiology, Free University of Berlin, 14163, Berlin, Germany
| | - Jan G Hengstler
- Leibniz Research Centre for Working Environment and Human Factors at TU Dortmund (IfADo), 44139, Dortmund, Germany
| | - Steven Dooley
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany.
| |
Collapse
|
8
|
Lerch S, Tolksdorf G, Schütz P, Brandwein C, Dormann C, Gass P, Chourbaji S. Effects of Embryo Transfer on Emotional Behaviors in C57BL/6 Mice. J Am Assoc Lab Anim Sci 2016; 55:510-519. [PMID: 27657704 PMCID: PMC5029820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 02/24/2016] [Accepted: 03/01/2016] [Indexed: 06/06/2023]
Abstract
Microbiologic standardization plays a key role in the management of animal facilities because contamination of stock could affect the health status and wellbeing of animals and thereby induce artifacts in biomedical research. One common method to avoid the dissemination of pathogens is embryo transfer (ET). Although disturbances in the perinatal environment may cause long-lasting effects on the behavior and physiology of mouse offspring, the influences of ET during this sensitive phase have not yet been addressed. Our study investigated the effects of various components of ET (anesthesia, surgery, recipient strain) on the behavior of dams (exploration, nest-building) and offspring (nest-building, exploration, anxiety, and social and depressive-like behaviors). For ET, the donor strain C57BL/6N and a standard protocol were used. Whereas treatment with anesthesia-analgesia did not affect maternal behavior, female offspring demonstrated overall effects on weight gain and corticosterone levels. Compared with naturally delivered female offspring, dams obtained through ET demonstrated decreased exploration and nest-building. In addition, female ET-derived offspring had enhanced levels of anxiety and increased social interest. Furthermore, ET-derived dams obtained by using NMRI as the recipient strain showed increased exploratory behavior compared with that of dams obtained by using C57 mice as recipients. Compared with using C57 as recipients, both sexes of offspring transferred into NMRI recipients weighed more, and female mice showed a depressive-like phenotype. Our findings suggest that ET, now considered to be a routine procedure in animal husbandry, bears the risk of introducing artifacts.
Collapse
Affiliation(s)
- Sandra Lerch
- Interfaculty Biomedical Research Facility, University of Heidelberg, Germany
| | - Gabriele Tolksdorf
- Interfaculty Biomedical Research Facility, University of Heidelberg, Germany
| | - Patrizia Schütz
- Interfaculty Biomedical Research Facility, University of Heidelberg, Germany
| | | | - Christof Dormann
- Central Institute of Mental Health, Mannheim, University of Heidelberg, Germany
| | - Peter Gass
- Central Institute of Mental Health, Mannheim, University of Heidelberg, Germany
| | - Sabine Chourbaji
- Interfaculty Biomedical Research Facility, University of Heidelberg, Germany; chourbaji@uni-heidelberg
| |
Collapse
|
9
|
Lerch S, Dormann C, Brandwein C, Gass P, Chourbaji S. The scent of stress: environmental challenge in the peripartum environment of mice affects emotional behaviours of the adult offspring in a sex-specific manner. Lab Anim 2015; 50:167-78. [PMID: 26408077 DOI: 10.1177/0023677215603260] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Early adverse experiences are known to influence the risk of developing psychiatric disorders later. To shed further light on the development of laboratory mice, we systematically examined the influence of a prenatal or postnatal olfactory stressor, namely unfamiliar male mouse faeces, presented to pregnant or nursing mouse dams. Maternal and offspring behaviours were then examined. Maternal behaviours relative to controls revealed changes in nest building by the pregnant dams exposed to the unfamiliar faeces. There were no differences among groups on pup retrieval or exploration by the dams. Behavioural phenotyping of male and female offspring as adults included measures of exploration, anxiety, social and depressive-like behaviours. Additionally, serum corticosterone was assessed as a marker of physiological stress response. Group differences were dependent on the sex of the adult offspring. Males raised by dams that were stressed during pregnancy presented elevated emotionality as indicated by increased numbers of faecal boluses in the open field paradigm. Consistent with the effects of prenatal stress on the males only the prenatally stressed females had higher body weights than their respective controls. Indeed, males in both experimental groups had higher circulating corticosterone levels. By contrast, female offspring of dams exposed to the olfactory stressor after parturition were more anxious in the O-maze as indicated by increased latencies in entering the exposed areas of the maze. These findings emphasize the necessity for researchers to consider the pre- and postnatal environments, even of mice with almost identical genetic backgrounds, in designing experiments and interpreting their data.
Collapse
Affiliation(s)
- S Lerch
- Interfaculty Biomedical Research Facility (IBF), University of Heidelberg, Central Institute of Mental Health (ZI) Mannheim, University of Heidelberg, Germany
| | - C Dormann
- Interfaculty Biomedical Research Facility (IBF), University of Heidelberg, Central Institute of Mental Health (ZI) Mannheim, University of Heidelberg, Germany
| | - C Brandwein
- Interfaculty Biomedical Research Facility (IBF), University of Heidelberg, Central Institute of Mental Health (ZI) Mannheim, University of Heidelberg, Germany
| | - P Gass
- Interfaculty Biomedical Research Facility (IBF), University of Heidelberg, Central Institute of Mental Health (ZI) Mannheim, University of Heidelberg, Germany
| | - S Chourbaji
- Interfaculty Biomedical Research Facility (IBF), University of Heidelberg, Central Institute of Mental Health (ZI) Mannheim, University of Heidelberg, Germany
| |
Collapse
|
10
|
Lerch S, Brandwein C, Dormann C, Gass P, Chourbaji S. Mice age - Does the age of the mother predict offspring behaviour? Physiol Behav 2015; 147:157-62. [PMID: 25914174 DOI: 10.1016/j.physbeh.2015.04.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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: 01/05/2015] [Revised: 04/20/2015] [Accepted: 04/22/2015] [Indexed: 12/25/2022]
Abstract
Increasing paternal age is known to be associated with a great variety of psychiatric disorders such as schizophrenia or autism. Hence the factor "age" may be taken as strategic tool to analyse specific scientific hypotheses. Additionally, this finding also needs to be addressed in rather pragmatically performed breeding protocols of model organisms, since otherwise artefacts may challenge the validity of the results. Our study was performed to investigate influences of advanced age of mouse dams (30 vs. 16weeks) on maternal- and offspring behaviour. Adult offspring of both sexes was analysed in a test battery comprising paradigms for exploration, anxiety and depressive-like behaviours. Final blood sampling was conducted for stressphysiological analysis. Interestingly, advanced age of the mothers was associated with increased nest-building quality while maternal activity was unaffected. Moreover "maternal (mice) age" (MA) affected emotionality in the offspring, which became apparent in the dark-light box and the social recognition paradigm. These findings not only emphasize MA to model a potent risk factor with regard to emotional stability, but also underscore the vast necessity to include information about breeding protocols into the methods section of any animal study.
Collapse
Affiliation(s)
- Sandra Lerch
- Interfaculty Biomedical Research Facility (IBF), University of Heidelberg, Germany; Central Institute of Mental Health (CIMH), Medical Faculty Mannheim, University of Heidelberg, Germany
| | - Christiane Brandwein
- Interfaculty Biomedical Research Facility (IBF), University of Heidelberg, Germany; Central Institute of Mental Health (CIMH), Medical Faculty Mannheim, University of Heidelberg, Germany
| | - Christof Dormann
- Interfaculty Biomedical Research Facility (IBF), University of Heidelberg, Germany; Central Institute of Mental Health (CIMH), Medical Faculty Mannheim, University of Heidelberg, Germany
| | - Peter Gass
- Interfaculty Biomedical Research Facility (IBF), University of Heidelberg, Germany; Central Institute of Mental Health (CIMH), Medical Faculty Mannheim, University of Heidelberg, Germany
| | - Sabine Chourbaji
- Interfaculty Biomedical Research Facility (IBF), University of Heidelberg, Germany; Central Institute of Mental Health (CIMH), Medical Faculty Mannheim, University of Heidelberg, Germany.
| |
Collapse
|
11
|
Lima-Ojeda JM, Vogt MA, Pfeiffer N, Dormann C, Köhr G, Sprengel R, Gass P, Inta D. Pharmacological blockade of GluN2B-containing NMDA receptors induces antidepressant-like effects lacking psychotomimetic action and neurotoxicity in the perinatal and adult rodent brain. Prog Neuropsychopharmacol Biol Psychiatry 2013; 45:28-33. [PMID: 23643674 DOI: 10.1016/j.pnpbp.2013.04.017] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [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: 12/22/2012] [Revised: 04/22/2013] [Accepted: 04/23/2013] [Indexed: 12/01/2022]
Abstract
NMDA receptor (NMDAR) antagonists like ketamine and MK-801 possess remarkable antidepressant effects with fast onset. However, they over-stimulate the retrosplenial cortex, evoking psychosis-like effects and neuronal injury, revealed by de novo induction of the heat shock protein 70 (Hsp70). Moreover, early in the development MK-801 triggers widespread cortical apoptosis, inducing extensive caspase-3 expression. Altogether these data raise strong concerns on the clinical applicability of NMDAR antagonist therapies. Therefore, the development of novel therapeutics targeting more specifically NMDAR to avoid psychotomimetic effects is necessary. Here we investigated a GluN2B (NR2B) antagonist in behavioral and neurotoxicity paradigms in rats to assess its potential as possible alternative to unspecific NMDA receptor antagonists. We found that treatment with the GluN2B specific antagonist Ro 25-6981 evoked robust antidepressant-like effects. Moreover, Ro 25-6981 did not cause hyperactivity as displayed after treatment with unspecific NMDAR antagonists, a correlate of psychosis-like effects in rodents. Additionally, Ro 25-6981, unlike MK-801, did not induce caspase-3 and HSP70 expression, markers of neurotoxicity in the perinatal and adult brain, respectively. Moreover, unexpectedly, in the adult retrosplenial cortex Ro 25-6981 pretreatment significantly reduced MK-801-triggered neurotoxicity. Our results suggest that GluN2B antagonists may represent valuable alternatives to unspecific NMDAR antagonists with robust antidepressant efficacy and a more favorable side-effect profile.
Collapse
Affiliation(s)
- Juan M Lima-Ojeda
- RG Animal Models in Psychiatry, Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Germany
| | | | | | | | | | | | | | | |
Collapse
|
12
|
Inta D, Lima-Ojeda JM, Lau T, Tang W, Dormann C, Sprengel R, Schloss P, Sartorius A, Meyer-Lindenberg A, Gass P. Electroconvulsive therapy induces neurogenesis in frontal rat brain areas. PLoS One 2013; 8:e69869. [PMID: 23922833 PMCID: PMC3724733 DOI: 10.1371/journal.pone.0069869] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 06/13/2013] [Indexed: 11/18/2022] Open
Abstract
Electroconvulsive therapy (ECT) is an effective therapy for several psychiatric disorders, including severe major depression, mania and certain forms of schizophrenia. It had been proposed that ECT acts by modulating local plasticity via the stimulation of neurogenesis. In fact, among antidepressant therapies, ECT is the most robust enhancer of neurogenesis in the hippocampus of rodents and non-human primates. The existence of ECT-triggered neurogenesis in other brain areas, particularly in those adjacent to the other main locus of neurogenesis, the subventricular zone (SVZ), had so far remained unknown. Here we show that ECT also strongly enhances neurogenesis in frontal brain areas, especially in the rostro-medial striatum, generating specific, small-size calretinin-positive interneurons. We provide here the first evidence that ECT stimulates neurogenesis in areas outside the hippocampus. Our data may open research possibilities that focus on the plastic changes induced by ECT in frontal limbic circuitry.
Collapse
Affiliation(s)
- Dragos Inta
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Inta D, Lima-Ojeda JM, Dormann C, KÖHr G, Sprengel R, Gass P. Combined subunit-specific and unspecific inhibition of NMDA receptors triggers distinct cortical c-fos expression patterns. Synapse 2012; 66:752-4. [DOI: 10.1002/syn.21562] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Accepted: 04/04/2012] [Indexed: 11/10/2022]
|
14
|
Inta D, Filipovic D, Lima-Ojeda JM, Dormann C, Pfeiffer N, Gasparini F, Gass P. The mGlu5 receptor antagonist MPEP activates specific stress-related brain regions and lacks neurotoxic effects of the NMDA receptor antagonist MK-801: Significance for the use as anxiolytic/antidepressant drug. Neuropharmacology 2012; 62:2034-9. [DOI: 10.1016/j.neuropharm.2011.12.035] [Citation(s) in RCA: 25] [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: 07/08/2011] [Revised: 11/07/2011] [Accepted: 12/28/2011] [Indexed: 10/14/2022]
|
15
|
Dormann C, Krumm S. TBS-TK Rezensionen. Psychologische Rundschau 2010. [DOI: 10.1026/0033-3042/a000038] [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: 11/04/2022]
Affiliation(s)
- C. Dormann
- Institut für Psychologie der Johannes Gutenberg-Universität Mainz
| | - S. Krumm
- Institut für Psychologie, Westfälische Wilhelms-Universität Münster
| |
Collapse
|
16
|
Sartorius A, Hellweg R, Litzke J, Vogt M, Dormann C, Vollmayr B, Danker-Hopfe H, Gass P. Correlations and discrepancies between serum and brain tissue levels of neurotrophins after electroconvulsive treatment in rats. Pharmacopsychiatry 2009; 42:270-6. [PMID: 19924587 DOI: 10.1055/s-0029-1224162] [Citation(s) in RCA: 220] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
INTRODUCTION The neurotrophin brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) are a central part of the molecular concepts on neuroplastic changes associated with stress, anxiety and depression. An increasing number of studies uses serum BDNF levels as a potential indicator for central nervous system alterations. METHODS To analyze the relationship between brain tissue and serum BDNF and NGF levels, we used electroconvulsive shocks (ECS), an animal model of electroconvulsive therapy, and studied the temporal profile of neurotrophin expression in the hippocampus, prefrontal cortex and serum. 88 male Sprague-Dawley rats received single or serial ECS treatments and were killed between 3 hours and 14 days after the last treatment. RESULTS We found a 2.8-fold rise for BDNF (1.3-fold for NGF) in the prefrontal cortex, and a 2.2-fold rise (1.2-fold for NGF) in the hippocampus after 5 ECS sessions. The temporal expression profile and correlation analyses between tissue and serum BDNF indicate that BDNF crosses the blood-brain barrier. No such correlation was found for NGF. DISCUSSION The time course of central and peripheral BDNF changes may significantly differ. However, we demonstrate substantial evidence that it can be justified to measure serum BDNF levels with a time delay to monitor brain tissue neurotrophin alterations.
Collapse
Affiliation(s)
- A Sartorius
- Central Institute of Mental Health, Department of Psychiatry and Psychotherapy, Mannheim, Germany.
| | | | | | | | | | | | | | | |
Collapse
|
17
|
Vogt M, Chourbaji S, Brandwein C, Dormann C, Sprengel R, Gass P. Suitability of tamoxifen-induced mutagenesis for behavioral phenotyping. Exp Neurol 2008; 211:25-33. [DOI: 10.1016/j.expneurol.2007.12.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2007] [Revised: 11/30/2007] [Accepted: 12/04/2007] [Indexed: 01/09/2023]
|
18
|
Chourbaji S, Brandwein C, Vogt MA, Dormann C, Gass P. Evaluation of effects of previous exposure to an acute stressor before testing for depression-like behaviours in mice. Stress 2008; 11:170-5. [PMID: 18311605 DOI: 10.1080/10253890701560119] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Test batteries are an essential and broadly used tool for behavioural phenotyping, especially with regard to mouse models of particular diseases, such as depression. Facing the problem of an often limited number of mutant animals, it therefore seems crucial to develop and optimise such test batteries in terms of an ideal throughput of subjects. This study aimed to characterize several common stressors, which are used for the investigation of depressive-like features with regard to their capability of each of them to affect performance in a subsequent behavioural test. Here we investigated swim-, restraint- and footshock-stress in male C57/BL6 mice, focusing on post-stress corticosterone elevations as well as potential effects on the behavioural level. The stressors increased circulating corticosterone levels when assessed 1 h after exposure. On the behavioural level, no test interactions could be detected, which suggests, that in general, combining these test conditions in experiments with a restricted availability of animals seems to be rather unproblematic.
Collapse
Affiliation(s)
- Sabine Chourbaji
- Department of Behavioural Biology, Central Institute of Mental Health Mannheim (ZI), University of Heidelberg, Mannheim, Germany.
| | | | | | | | | |
Collapse
|
19
|
Billeter R, Liira J, Bailey D, Bugter R, Arens P, Augenstein I, Aviron S, Baudry J, Bukacek R, Burel F, Cerny M, De Blust G, De Cock R, Diekötter T, Dietz H, Dirksen J, Dormann C, Durka W, Frenzel M, Hamersky R, Hendrickx F, Herzog F, Klotz S, Koolstra B, Lausch A, Le Coeur D, Maelfait JP, Opdam P, Roubalova M, Schermann A, Schermann N, Schmidt T, Schweiger O, Smulders M, Speelmans M, Simova P, Verboom J, Van Wingerden W, Zobel M, Edwards P. Indicators for biodiversity in agricultural landscapes: a pan-European study. J Appl Ecol 2007. [DOI: 10.1111/j.1365-2664.2007.01393.x] [Citation(s) in RCA: 464] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
20
|
Affiliation(s)
- M.F. Dollard
- Work and Stress Research Group, University of South Australia
| | - C. Dormann
- Johann Wolfgang Goethe University, Germany
| | - C.M. Boyd
- Work and Stress Research Group, University of South Australia
| | | | - A.H. Winefield
- Work and Stress Research Group, University of South Australia
| |
Collapse
|
21
|
Chourbaji S, Zacher C, Sanchis-Segura C, Dormann C, Vollmayr B, Gass P. Learned helplessness: validity and reliability of depressive-like states in mice. ACTA ACUST UNITED AC 2005; 16:70-8. [PMID: 16338640 DOI: 10.1016/j.brainresprot.2005.09.002] [Citation(s) in RCA: 151] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2005] [Revised: 09/12/2005] [Accepted: 09/22/2005] [Indexed: 11/26/2022]
Abstract
The learned helplessness paradigm is a depression model in which animals are exposed to unpredictable and uncontrollable stress, e.g. electroshocks, and subsequently develop coping deficits for aversive but escapable situations (J.B. Overmier, M.E. Seligman, Effects of inescapable shock upon subsequent escape and avoidance responding, J. Comp. Physiol. Psychol. 63 (1967) 28-33 ). It represents a model with good similarity to the symptoms of depression, construct, and predictive validity in rats. Despite an increased need to investigate emotional, in particular depression-like behaviors in transgenic mice, so far only a few studies have been published using the learned helplessness paradigm. One reason may be the fact that-in contrast to rats (B. Vollmayr, F.A. Henn, Learned helplessness in the rat: improvements in validity and reliability, Brain Res. Brain Res. Protoc. 8 (2001) 1-7)--there is no generally accepted learned helplessness protocol available for mice. This prompted us to develop a reliable helplessness procedure in C57BL/6N mice, to exclude possible artifacts, and to establish a protocol, which yields a consistent fraction of helpless mice following the shock exposure. Furthermore, we validated this protocol pharmacologically using the tricyclic antidepressant imipramine. Here, we present a mouse model with good face and predictive validity that can be used for transgenic, behavioral, and pharmacological studies.
Collapse
Affiliation(s)
- S Chourbaji
- Central Institute of Mental Health Mannheim (ZI), University of Heidelberg, Germany, J 5, D-68159 Mannheim, Germany.
| | | | | | | | | | | |
Collapse
|
22
|
Van der Wal R, Madan N, van Lieshout S, Dormann C, Langvatn R, Albon SD. Trading forage quality for quantity? Plant phenology and patch choice by Svalbard reindeer. Oecologia 2000; 123:108-115. [PMID: 28308735 DOI: 10.1007/s004420050995] [Citation(s) in RCA: 136] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- R Van der Wal
- Centre for Ecology & Hydrology, Banchory Research Station, Hill of Brathens, Glassel, Banchory, AB31 4BY, Scotland e-mail: Fax: +44-1330-823303, , , , , , GB
| | - N Madan
- Centre for Ecology & Hydrology, Banchory Research Station, Hill of Brathens, Glassel, Banchory, AB31 4BY, Scotland e-mail: Fax: +44-1330-823303, , , , , , GB
| | - S van Lieshout
- Centre for Ecology & Hydrology, Banchory Research Station, Hill of Brathens, Glassel, Banchory, AB31 4BY, Scotland e-mail: Fax: +44-1330-823303, , , , , , GB
| | - C Dormann
- Centre for Ecology & Hydrology, Banchory Research Station, Hill of Brathens, Glassel, Banchory, AB31 4BY, Scotland e-mail: Fax: +44-1330-823303, , , , , , GB
| | - R Langvatn
- University Courses in Svalbard (UNIS), N-9170 Longyearbyen, Norway, , , , , , NO
| | - S D Albon
- Centre for Ecology & Hydrology, Banchory Research Station, Hill of Brathens, Glassel, Banchory, AB31 4BY, Scotland e-mail: Fax: +44-1330-823303, , , , , , GB
| |
Collapse
|
23
|
Dormann C, Zapf D. Social support, social stressors at work, and depressive symptoms: testing for main and moderating effects with structural equations in a three-wave longitudinal study. J Appl Psychol 1999; 84:874-84. [PMID: 10639907 DOI: 10.1037/0021-9010.84.6.874] [Citation(s) in RCA: 179] [Impact Index Per Article: 7.2] [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: 11/08/2022] Open
Abstract
This study investigated the moderating effects of social support by supervisors and colleagues relative to social stressors at work and depressive symptoms using a structural equations approach in a 3-wave longitudinal study over 1 year. The analyses were based on a randomly drawn sample (N = 543) of citizens in the area around Dresden in the former East Germany. LISREL analysis with latent moderating effects revealed a moderating effect for supervisor support. This applied only if the time lag was 8 months, but not for longer or shorter lags. Under low-support conditions depressive symptoms were increased by social stressors, whereas, contrary to expectations, social stressors reduced subsequent depressive symptoms under high-support conditions. No moderating effect for colleague support was found. Several mechanisms are discussed that may explain the results.
Collapse
Affiliation(s)
- C Dormann
- Department of Psychology, University of Giessen, Germany.
| | | |
Collapse
|
24
|
Zapf D, Dormann C, Frese M. Longitudinal studies in organizational stress research: a review of the literature with reference to methodological issues. J Occup Health Psychol 1998. [PMID: 9547043 DOI: 10.1037//1076-8998.1.2.145] [Citation(s) in RCA: 112] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Demonstrating causal relationships has been of particular importance in organizational stress research. Longitudinal studies are typically suggested to overcome problems of reversed causation and third variables (e.g., social desirability and negative affectivity). This article reviews the empirical longitudinal literature and discusses designs and statistical methods used in these studies. Forty-three longitudinal field reports on organizational stress were identified. Most of the investigations used a 2-wave panel design and a hierarchical multiple regression approach. Six studies with 3 and more waves were found. About 50% of the studies analyzed potential strain-stressor (reversed causation) relationships. In about 33% of the studies there was some evidence of reverse causation. The power of longitudinal studies to rule out third variable explanations was not realized in many studies. Procedures of how to analyze longitudinal data are suggested.
Collapse
Affiliation(s)
- D Zapf
- Faculty of Social Sciences, University of Konstanz, Germany.
| | | | | |
Collapse
|
25
|
Zapf D, Dormann C, Frese M. Longitudinal studies in organizational stress research: a review of the literature with reference to methodological issues. J Occup Health Psychol 1996; 1:145-69. [PMID: 9547043 DOI: 10.1037/1076-8998.1.2.145] [Citation(s) in RCA: 690] [Impact Index Per Article: 24.6] [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: 11/08/2022]
Abstract
Demonstrating causal relationships has been of particular importance in organizational stress research. Longitudinal studies are typically suggested to overcome problems of reversed causation and third variables (e.g., social desirability and negative affectivity). This article reviews the empirical longitudinal literature and discusses designs and statistical methods used in these studies. Forty-three longitudinal field reports on organizational stress were identified. Most of the investigations used a 2-wave panel design and a hierarchical multiple regression approach. Six studies with 3 and more waves were found. About 50% of the studies analyzed potential strain-stressor (reversed causation) relationships. In about 33% of the studies there was some evidence of reverse causation. The power of longitudinal studies to rule out third variable explanations was not realized in many studies. Procedures of how to analyze longitudinal data are suggested.
Collapse
Affiliation(s)
- D Zapf
- Faculty of Social Sciences, University of Konstanz, Germany.
| | | | | |
Collapse
|