1
|
Alinger-Scharinger B, Kronberger C, Hutarew G, Hitzl W, Reitsamer R, Klaassen-Federspiel F, Hager M, Fischer T, Sotlar K, Jaksch-Bogensperger H. Correction to: HER2 copy number determination in breast cancer using the highly sensitive droplet digital PCR method. Virchows Arch 2023:10.1007/s00428-023-03716-1. [PMID: 38059983 DOI: 10.1007/s00428-023-03716-1] [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: 12/08/2023]
Affiliation(s)
- Beate Alinger-Scharinger
- Department of Pathology, University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria.
| | - Cornelia Kronberger
- Department of Pathology, University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Georg Hutarew
- Department of Pathology, University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Wolfgang Hitzl
- Research Management and Technology Transfer, Paracelsus Medical University Salzburg, Strubergasse 16, 5020, Salzburg, Austria
- Department of Ophthalmology and Optometry, Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
- Research Program Experimental Ophthalmology and Glaucoma Research, Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Roland Reitsamer
- Department of Obstetrics and Gynaecology, Clinical Research Center Salzburg (CRCS), University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Frederike Klaassen-Federspiel
- Department of Obstetrics and Gynaecology, Clinical Research Center Salzburg (CRCS), University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Martina Hager
- Department of Pathology, University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Thorsten Fischer
- Department of Obstetrics and Gynaecology, Clinical Research Center Salzburg (CRCS), University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Karl Sotlar
- Department of Pathology, University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Heidi Jaksch-Bogensperger
- Department of Obstetrics and Gynaecology, Clinical Research Center Salzburg (CRCS), University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| |
Collapse
|
2
|
Alinger-Scharinger B, Kronberger C, Hutarew G, Hitzl W, Reitsamer R, Frederike KF, Hager M, Fischer T, Sotlar K, Jaksch-Bogensperger H. HER2 copy number determination in breast cancer using the highly sensitive droplet digital PCR method. Virchows Arch 2023:10.1007/s00428-023-03706-3. [PMID: 37996704 DOI: 10.1007/s00428-023-03706-3] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 11/07/2023] [Accepted: 11/10/2023] [Indexed: 11/25/2023]
Abstract
Human epidermal growth factor receptor 2 (HER)-positive breast cancer (BC) is characterized by an aggressive clinical course. In the case of HER2 overexpression/amplification, patients benefit from HER2-targeting therapies. Standardized diagnostic HER2 assessment includes immunohistochemistry (IHC) and/or in situ hybridization (ISH). The aim of this study was to compare this "gold standard" with the Droplet Digital™ polymerase chain reaction (ddPCR), a method that allows sensitive and precise detection of copy number variations (CNV) in FFPE (formalin-fixed, paraffin-embedded) DNA samples. Partitioning of the PCR reaction into 20,000 droplets enables a precise quantitative "CN" discrimination also in heterogeneous samples. FFPE breast cancer samples (n = 170) with routinely assessed HER2 status by IHC/ISH were retrospectively analyzed using the ddPCR CNV ERBB2 assay. Comparison of HER2 status assessment by the two methods revealed concordant results in 92.9% (158/170) of the cases. Discrepant cases were verified and interpreted. For ddPCR, a cut off value of 3 HER2 copies was set to distinguish between HER2-negative and HER2-positive BC. Results obtained with the ddPCR CNV ERBB2 assay were consistent and reproducible, and serial dilutions demonstrated a high stability and sensitivity of the method. The ddPCR CNV ERBB2 assay may be a specific and convenient tool to quantify HER2 copy numbers in BC samples. In our study, this method showed high reproducibility in accuracy of HER2 assessment compared to IHC/ISH analysis.
Collapse
Affiliation(s)
- Beate Alinger-Scharinger
- Department of Pathology, University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria.
| | - Cornelia Kronberger
- Department of Pathology, University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Georg Hutarew
- Department of Pathology, University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Wolfgang Hitzl
- Research Management and Technology Transfer, Paracelsus Medical University Salzburg, Strubergasse 16, 5020, Salzburg, Austria
- Department of Ophthalmology and Optometry, Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
- Research Program Experimental Ophthalmology and Glaucoma Research, Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Roland Reitsamer
- Department of Obstetrics and Gynaecology, Clinical Research Center Salzburg (CRCS), University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Klaassen-Federspiel Frederike
- Department of Obstetrics and Gynaecology, Clinical Research Center Salzburg (CRCS), University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Martina Hager
- Department of Pathology, University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Thorsten Fischer
- Department of Obstetrics and Gynaecology, Clinical Research Center Salzburg (CRCS), University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Karl Sotlar
- Department of Pathology, University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| | - Heidi Jaksch-Bogensperger
- Department of Obstetrics and Gynaecology, Clinical Research Center Salzburg (CRCS), University Hospital and Paracelsus Medical University Salzburg, Muellner Hauptstraße 48, 5020, Salzburg, Austria
| |
Collapse
|
3
|
Huhn EA, Göbl CS, Fischer T, Todesco Bernasconi M, Kreft M, Kunze M, Vogt DR, Dölzlmüller E, Jaksch-Bogensperger H, Heldstab S, Eppel W, Husslein P, Ochsenbein Kölble N, Richter A, Bäz E, Winzeler B, Hoesli I. Sensitivity, specificity, and diagnostic accuracy of WHO 2013 criteria for diagnosis of gestational diabetes mellitus in low risk early pregnancies: international, prospective, multicentre cohort study. BMJ Med 2023; 2:e000330. [PMID: 37720695 PMCID: PMC10503330 DOI: 10.1136/bmjmed-2022-000330] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 07/17/2023] [Indexed: 09/19/2023]
Abstract
Objective To evaluate the predictability of gestational diabetes mellitus wth a 75 g oral glucose tolerance test (OGTT) in early pregnancy, based on the 2013 criteria of the World Health Organization, and to test newly proposed cut-off values. Design International, prospective, multicentre cohort study. Setting Six university or cantonal departments in Austria, Germany, and Switzerland, from 1 May 2016 to 31 January 2019. Participants Low risk cohort of 829 participants aged 18-45 years with singleton pregnancies attending first trimester screening and consenting to have an early 75 g OGTT at 12-15 weeks of gestation. Participants and healthcare providers were blinded to the results. Main outcome measures Fasting, one hour, and two hour plasma glucose concentrations after an early 75 g OGTT (12-15 weeks of gestation) and a late 75 g OGTT (24-28 weeks of gestation). Results Of 636 participants, 74 (12%) developed gestational diabetes mellitus, according to World Health Organization 2013 criteria, at 24-28 weeks of gestation. Applying WHO 2013 criteria to the early OGTT with at least one abnormal value gave a low sensitivity of 0.35 (95% confidence interval 0.24 to 0.47), high specificity of 0.96 (0.95 to 0.98), positive predictive value of 0.57 (0.41 to 0.71), negative predictive value of 0.92 (0.89 to 0.94), positive likelihood ratio of 10.46 (6.21 to 17.63), negative likelihood ratio of 0.65 (0.55 to 0.78), and diagnostic odds ratio of 15.98 (8.38 to 30.47). Lowering the postload glucose values (75 g OGTT cut-off values of 5.1, 8.9, and 7.8 mmol/L) improved the detection rate (53%, 95% confidence interval 41% to 64%) and negative predictive value (0.94, 0.91 to 0.95), but decreased the specificity (0.91, 0.88 to 0.93) and positive predictive value (0.42, 0.32 to 0.53) at a false positive rate of 9% (positive likelihood ratio 5.59, 4.0 to 7.81; negative likelihood ratio 0.64, 0.52 to 0.77; and diagnostic odds ratio 10.07, 6.26 to 18.31). Conclusions The results of this prospective low risk cohort study indicated that the 75 g OGTT as a screening tool in early pregnancy is not sensitive enough when applying WHO 2013 criteria. Postload glucose values were higher in early pregnancy complicated by diabetes in pregnancy. Lowering the postload cut-off values identified a high risk group for later development of gestational diabetes mellitus or those who might benefit from earlier treatment. Results from randomised controlled trials showing a beneficial effect of early intervention are unclear. Trial registration ClinicalTrials.gov NCT02035059.
Collapse
Affiliation(s)
- Evelyn A Huhn
- Department of Feto-Maternal Medicine and Obstetrics, University Hospital Basel, Basel, Switzerland
- Department of Prenatal Diangosis and Obstetrics, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Christian S Göbl
- Department of Obstetrics and Gynaecology, Medical University of Vienna, Vienna, Austria
| | - Thorsten Fischer
- Department of Obstetrics and Gynaecology, Salzburger Landeskrankenhaus, Paracelsus Medical University, Salzburg, Austria
| | | | - Martina Kreft
- Department of Obstetrics and Gynaecology, University Hospital Zurich, Zurich, Switzerland
| | - Mirjam Kunze
- Department of Obstetrics and Gynaecology, University Hospital Freiburg, Freiburg, Germany
| | - Deborah R Vogt
- Department of Clinical Research, University of Basel, Basel, Switzerland
- Department of Clinical Research, University Hospital Basel, Basel, Switzerland
| | - Eva Dölzlmüller
- Department of Obstetrics and Gynaecology, Salzburger Landeskrankenhaus, Paracelsus Medical University, Salzburg, Austria
| | - Heidi Jaksch-Bogensperger
- Department of Obstetrics and Gynaecology, Salzburger Landeskrankenhaus, Paracelsus Medical University, Salzburg, Austria
| | - Sandra Heldstab
- Department of Obstetrics and Gynaecology, Cantonal Hospital Aarau, Aarau, Switzerland
| | - Wolfgang Eppel
- Department of Obstetrics and Gynaecology, Medical University of Vienna, Vienna, Austria
| | - Peter Husslein
- Department of Obstetrics and Gynaecology, Medical University of Vienna, Vienna, Austria
| | | | - Anne Richter
- Department of Obstetrics and Gynaecology, University Hospital Zurich, Zurich, Switzerland
| | - Elke Bäz
- Department of Obstetrics and Gynaecology, University Hospital Freiburg, Freiburg, Germany
| | - Bettina Winzeler
- Department of Endocrinology and Diabetology, University Hospital Basel, Basel, Switzerland
| | - Irene Hoesli
- Department of Obstetrics and Gynaecology, University Hospital Basel, Basel, Switzerland
| |
Collapse
|
4
|
Fischer T, Helmer H, Klaritsch P, Fazelnia C, Bogner G, Hillerer KM, Wohlmuth C, Jaksch-Bogensperger H. Diagnosis and Therapy of Iron Deficiency Anemia During Pregnancy: Recommendation of the Austrian Society for Gynecology and Obstetrics (OEGGG). Geburtshilfe Frauenheilkd 2022; 82:392-399. [PMID: 35392071 PMCID: PMC8983107 DOI: 10.1055/a-1710-3387] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 11/30/2021] [Indexed: 10/25/2022] Open
Abstract
This overview analyzes the data on the controversial therapy of iron substitution during pregnancy, the diagnosis of iron deficiency anemia and the indication-related therapy, and is the first recommendation issued by the OEGGG on the appropriate therapy. The effects of anemia during pregnancy on postnatal outcomes have been intensively investigated with heterogeneous results. A final scientific conclusion with regards to the "optimal" maternal hemoglobin level is limited by the heterogeneous results of various studies, many of which were conducted in emerging nations (with different dietary habits and structural differences in the respective healthcare systems). The current literature even suggests that there may be a connection between both decreased and increased maternal serum hemoglobin concentrations and unfavorable short-term and long-term neonatal outcomes. In Austria, 67 percent of pregnant women take pharmacological supplements or use a variety of dietary supplements. Clinically, the prevalence of maternal anemia is often overestimated, leading to overtreatment of pregnant women (iron substitution without a medical indication). To obtain a differential diagnosis, a workup of the indications for treatment should be carried out prior to initiating any form of iron substitution during pregnancy. If treatment is medically indicated, oral iron substitution is usually sufficient. Because of the restricted approval and potential side effects, medical indications for intravenous iron substitution should be limited. Intravenous iron substitution without a prior detailed diagnostic workup is an off-label use and should only be used in very limited cases, and women should be advised accordingly.
Collapse
Affiliation(s)
- Thorsten Fischer
- Universitätsklinik für Frauenheilkunde und Geburtshilfe, Paracelsus Medizinische Universität Salzburg (PMU), Salzburg, Austria
| | - Hanns Helmer
- Leitliniengruppe der Österreichischen Gesellschaft für Gynäkologie und Geburtshilfe, Univ.-Klinik f. Frauenheilkunde, Medizinische Universität Wien, Wien, Austria
| | - Philipp Klaritsch
- Abteilung für Geburtshilfe, Universitätsklinik für Frauenheilkunde und Geburtshilfe, Medizinische Universität Graz, Graz, Austria
| | - Claudius Fazelnia
- Universitätsklinik für Frauenheilkunde und Geburtshilfe, Paracelsus Medizinische Universität Salzburg (PMU), Salzburg, Austria
| | - Gerhard Bogner
- Universitätsklinik für Frauenheilkunde und Geburtshilfe, Paracelsus Medizinische Universität Salzburg (PMU), Salzburg, Austria
| | - Katharina M Hillerer
- Universitätsklinik für Frauenheilkunde und Geburtshilfe, Paracelsus Medizinische Universität Salzburg (PMU), Salzburg, Austria
| | - Christoph Wohlmuth
- Universitätsklinik für Frauenheilkunde und Geburtshilfe, Paracelsus Medizinische Universität Salzburg (PMU), Salzburg, Austria
| | - Heidi Jaksch-Bogensperger
- Universitätsklinik für Frauenheilkunde und Geburtshilfe, Paracelsus Medizinische Universität Salzburg (PMU), Salzburg, Austria
| | | |
Collapse
|
5
|
Stepan J, Bajaj T, Gharehbaghi D, Jaksch-Bogensperger H, Gassen N. Placental autophagy: Emerging pathway in preeclampsia. Geburtshilfe Frauenheilkd 2020. [DOI: 10.1055/s-0040-1718014] [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: 10/23/2022] Open
Affiliation(s)
- J Stepan
- Department of Obstetrics and Gynecology, Paracelsus Medical University
- Research Group Neurohomeostasis, Department of Psychiatry and Psychotherapy, University of Bonn
| | - T Bajaj
- Research Group Neurohomeostasis, Department of Psychiatry and Psychotherapy, University of Bonn
| | - D Gharehbaghi
- Department of Obstetrics and Gynecology, Paracelsus Medical University
| | | | - N Gassen
- Research Group Neurohomeostasis, Department of Psychiatry and Psychotherapy, University of Bonn
| |
Collapse
|
6
|
Jaksch-Bogensperger H, Spiegl-Kreinecker S, Arosio P, Eckl P, Golaszewski S, Ebner Y, Al-Schameri R, Strasser P, Weis S, Bresgen N. Ferritin in glioblastoma. Br J Cancer 2020; 122:1441-1444. [PMID: 32203223 PMCID: PMC7217840 DOI: 10.1038/s41416-020-0808-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 02/27/2020] [Accepted: 03/04/2020] [Indexed: 11/09/2022] Open
Abstract
Elevated levels of serum ferritin (SF) are observed in several types of cancer; however, little is known on the association between ferritin and glioma, the most frequent type of human primary brain tumour. Here we report that GBM patients show significantly increased pre-surgical SF levels (i.e. ferritinaemia) within the SF reference range and a marked ferritin immunoreactivity of resected tumour tissue. Our findings account for an indirect association between ferritin synthesis in glioma-tissue and altered SF levels, which limits the clinical value of SF as a tumour marker in glioma. Importantly, we show for the first time that GBM-derived glioma cells release ferritin in vitro, which exerts an apoptosis-stimulating activity. Albeit the pathophysiologic context of apoptosis induction by a tumour-derived ferritin remains to be defined, our findings account for a distinct growth-regulatory role of these ferritin species in tumour biology.
Collapse
Affiliation(s)
- Heidi Jaksch-Bogensperger
- Department of Biosciences, University of Salzburg, Hellbrunnerstrasse 34, Salzburg, A-5020, Austria.,Department of Obstetrics and Gynaecology, Salzburger Landeskliniken (SALK), Paracelsus Medical University Salzburg (PMU), Clinical Research Center, Salzburg, A-5020, Austria.,University Hospital of Neurology, Christian-Doppler-Klinik, Salzburger Landeskliniken (SALK), Paracelsus Medical University Salzburg (PMU), Salzburg, A-5020, Austria
| | - Sabine Spiegl-Kreinecker
- Department of Neurosurgery, Kepler University Hospital GmbH, Johannes Kepler University, Linz, A-4020, Austria
| | - Paolo Arosio
- Laboratory of Molecular Biology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, I-25123, Italy
| | - Peter Eckl
- Department of Biosciences, University of Salzburg, Hellbrunnerstrasse 34, Salzburg, A-5020, Austria
| | - Stefan Golaszewski
- University Hospital of Neurology, Christian-Doppler-Klinik, Salzburger Landeskliniken (SALK), Paracelsus Medical University Salzburg (PMU), Salzburg, A-5020, Austria
| | - Yvonne Ebner
- University Hospital of Neurology, Christian-Doppler-Klinik, Salzburger Landeskliniken (SALK), Paracelsus Medical University Salzburg (PMU), Salzburg, A-5020, Austria
| | - Rahman Al-Schameri
- Department of Neurosurgery, Christian Doppler Klinik, Salzburger Landeskliniken (SALK), Paracelsus Medical University Salzburg (PMU), Salzburg, A-5020, Austria
| | - Peter Strasser
- Institute for Medical and Chemical Laboratory Diagnostics, Salzburger Landeskliniken (SALK), Paracelsus Medical University Salzburg (PMU), Salzburg, A-5020, Austria
| | - Serge Weis
- Department of Neuropathology, Kepler University Hospital GmbH, Johannes Kepler University, Linz, A-4020, Austria
| | - Nikolaus Bresgen
- Department of Biosciences, University of Salzburg, Hellbrunnerstrasse 34, Salzburg, A-5020, Austria.
| |
Collapse
|
7
|
Jaksch-Bogensperger H, Hammerschmid A, Aigner L, Trinka E, Gehwolf R, Ebner Y, Hutterer M, Couillard-Despres S. Proseek single-plex protein assay kit system to detect sAxl and Gas6 in serological material of brain tumor patients. ACTA ACUST UNITED AC 2018; 18:e00252. [PMID: 29876303 PMCID: PMC5989588 DOI: 10.1016/j.btre.2018.e00252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 12/04/2017] [Revised: 03/01/2018] [Accepted: 04/04/2018] [Indexed: 01/01/2023]
Abstract
Establishment of an alternative method beside routinely used ELISA to measure levels of sAxl and Gas6 in serological material of HGG patients is proposed. Both antibodies are established with the powerful combination of protein detection and PCR amplification using the Proseek Single-Plex Assay. This tool quantifies single proteins in solution with a maximum of sensitivity and specificity to visualize low levels of proteins in just 1 μl blood sample within one day.
The receptor tyrosine kinase (RTK) Axl and its ligand Gas6 are critically involved in the pathogenesis of high-grade glioma (HGG). Both proteins were found to be overexpressed e.g. in tumor cells, mediating cell proliferation and migration as well as tumor angiogenesis and neuroinflammation. The extracellular domain of Axl (sAxl) and Gas6 were found in the peri-tumoral edema and blood of animals as well as in human glioma tissue. Therefore, we monitored the level of sAxl and Gas6 in human blood samples. To increase the sensitivity of protein detection beyond commonly used standard methods we preliminary tested the innovative Proseek Single-Plex Protein Assay Kit System from Olink Bioscience together with new antibodies against the soluble RTK sAxl and its ligand Gas6. We conclude that the Proseek method is a highly sensitive and fast procedure that can be used as a possible powerful tool compared to routinely used ELISA-methods.
Collapse
Affiliation(s)
- Heidi Jaksch-Bogensperger
- University Hospital for Obstetrics and Gynaecology, Paracelsus Medical University Salzburg, Müllner Hauptstrasse 48, A-5020, Salzburg, Austria.,Institute of Molecular Regenerative Medicine, Spinal Cord Injury and Tissue Regeneration Center Salzburg, Paracelsus Medical University, Strubergasse 21, A-5020, Salzburg, Austria
| | - Anna Hammerschmid
- Institute of Molecular Regenerative Medicine, Spinal Cord Injury and Tissue Regeneration Center Salzburg, Paracelsus Medical University, Strubergasse 21, A-5020, Salzburg, Austria
| | - Ludwig Aigner
- Institute of Molecular Regenerative Medicine, Spinal Cord Injury and Tissue Regeneration Center Salzburg, Paracelsus Medical University, Strubergasse 21, A-5020, Salzburg, Austria
| | - Eugen Trinka
- University Hospital of Neurology, Christian-Doppler-Klinik, Paracelsus Medical University Salzburg, Ignaz-Harrer-Straße 79, A-5020, Salzburg, Austria
| | - Renate Gehwolf
- Institute of Tendon and Bone Regeneration, Spinal Cord Injury and Tissue Regeneration Center Salzburg, Paracelsus Medical University, Strubergasse 21, A-5020, Salzburg, Austria
| | - Yvonne Ebner
- University Hospital of Psychiatry, Psychotherapy and Psychosomatic, Paracelsus Medical University Salzburg, Ignaz-Harrer-Straße 79, A-5020, Salzburg, Austria
| | - Markus Hutterer
- Department of Neurology 1 - Neuromed Campus, Kepler University Hospital Linz, Wagner-Jauregg Weg 15, A-4020, Linz, Austria
| | - Sebastien Couillard-Despres
- Institute of Experimental Neuroregeneration, Spinal Cord Injury and Tissue Regeneration Center Salzburg, Paracelsus Medical University, Strubergasse 21, A-5020, Salzburg, Austria
| |
Collapse
|
8
|
Marschallinger J, Sah A, Schmuckermair C, Unger M, Rotheneichner P, Kharitonova M, Waclawiczek A, Gerner P, Jaksch-Bogensperger H, Berger S, Striessnig J, Singewald N, Couillard-Despres S, Aigner L. The L-type calcium channel Cav1.3 is required for proper hippocampal neurogenesis and cognitive functions. Cell Calcium 2015; 58:606-16. [PMID: 26459417 DOI: 10.1016/j.ceca.2015.09.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [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: 05/01/2015] [Revised: 09/04/2015] [Accepted: 09/29/2015] [Indexed: 11/29/2022]
Abstract
L-type voltage gated Ca(2+) channels (LTCCs) are widely expressed within different brain regions including the hippocampus. The isoforms Cav1.2 and Cav1.3 have been shown to be involved in hippocampus-dependent learning and memory, cognitive functions that require proper hippocampal neurogenesis. In vitro, functional LTCCs are expressed on neuronal progenitor cells, where they promote neuronal differentiation. Expression of LTCCs on neural stem and progenitor cells within the neurogenic regions in the adult brain in vivo has not been examined so far, and a contribution of the individual isoforms Cav1.2 and Cav1.3 to adult neurogenesis remained to be clarified. To reveal the role of these channels we first evaluated the expression patterns of Cav1.2 and Cav1.3 in the hippocampal dentate gyrus and the subventricular zone (SVZ) in adult (2- and 3-month old) and middle-aged (15-month old) mice on mRNA and protein levels. We performed immunohistological analysis of hippocampal neurogenesis in adult and middle-aged Cav1.3(-/-) mice and finally addressed the importance of Cav1.3 for hippocampal function by evaluating spatial memory and depression-like behavior in adult Cav1.3(-/-) mice. Our results showed Cav1.2 and Cav1.3 expression at different stages of neuronal differentiation. While Cav1.2 was primarily restricted to mature NeuN(+) granular neurons, Cav1.3 was expressed in Nestin(+) neural stem cells and in mature NeuN(+) granular neurons. Adult and middle-aged Cav1.3(-/-) mice showed severe impairments in dentate gyrus neurogenesis, with significantly smaller dentate gyrus volume, reduced survival of newly generated cells, and reduced neuronal differentiation. Further, Cav1.3(-/-) mice showed impairment in the hippocampus dependent object location memory test, implicating Cav1.3 as an essential element for hippocampus-associated cognitive functions. Thus, modulation of LTCC activities may have a crucial impact on neurogenic responses and cognition, which should be considered for future therapeutic administration of LTCCs modulators.
Collapse
Affiliation(s)
- Julia Marschallinger
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria; Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria
| | - Anupam Sah
- Department of Pharmacology and Toxicology, Institute of Pharmacy and CMBI, Leopold-Franzens-University of Innsbruck, Innsbruck, Austria
| | - Claudia Schmuckermair
- Department of Pharmacology and Toxicology, Institute of Pharmacy and CMBI, Leopold-Franzens-University of Innsbruck, Innsbruck, Austria
| | - Michael Unger
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria; Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria
| | - Peter Rotheneichner
- Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria; Institute of Experimental Neuroregeneration, Paracelsus Medical University, Salzburg, Austria
| | - Maria Kharitonova
- Department of Pharmacology and Toxicology, Institute of Pharmacy and CMBI, Leopold-Franzens-University of Innsbruck, Innsbruck, Austria
| | - Alexander Waclawiczek
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria; Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria
| | - Philipp Gerner
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria; Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria
| | - Heidi Jaksch-Bogensperger
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria; Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria
| | - Stefan Berger
- Department of Molecular Biology, Central Institute of Mental Health and Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Jörg Striessnig
- Department of Pharmacology and Toxicology, Institute of Pharmacy and CMBI, Leopold-Franzens-University of Innsbruck, Innsbruck, Austria
| | - Nicolas Singewald
- Department of Pharmacology and Toxicology, Institute of Pharmacy and CMBI, Leopold-Franzens-University of Innsbruck, Innsbruck, Austria
| | - Sebastien Couillard-Despres
- Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria; Institute of Experimental Neuroregeneration, Paracelsus Medical University, Salzburg, Austria
| | - Ludwig Aigner
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria; Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria.
| |
Collapse
|