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Elsner C, Appeltrath GA, Konik M, Parreuter J, Broecker-Preuss M, Krawczyk A, Esser S, Sammet S, Karsten CB. False-Positive Screening and Confirmatory HIV Diagnostic Test in a Patient with Cured SARS-CoV-2 Infection Is Not Mediated by Env/Spike Cross-Reactive Antibodies. Viruses 2023; 15:v15051161. [PMID: 37243248 DOI: 10.3390/v15051161] [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: 04/03/2023] [Revised: 05/04/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023] Open
Abstract
Acute SARS-CoV-2 infection has been associated with false-positive HIV screening tests. The underlying mechanism is unclear, and for clinical cases, evidence beyond a temporal connection is missing. However, several experimental studies point toward SARS-CoV-2 spike/HIV-1 envelope (Env) cross-reactive antibodies (Abs) as a cause. Here, we present the first case of an individual with convalescent SARS-CoV-2 infection testing false positive in both an HIV screening and confirmatory test. Longitudinal sampling showed that the phenomenon was temporary but lasted for at least 3 months before waning. After excluding a multitude of common determinants for assay interference, we further show by antibody depletion studies that SARS-CoV-2-spike-specific Abs did not cross-react with HIV-1 gp120 in the patient sample. No additional case of HIV test interference was identified in a cohort of 66 individuals who presented to a post-COVID-19 outpatient clinic. We conclude the SARS-CoV-2-associated HIV test interference to be a temporary process capable of disturbing both screening and confirmatory assays. The assay interference is short-lived and/or rare but should be considered by physicians as a possible explanation for unexpected HIV diagnostic results in patients with a recent SARS-CoV-2 infection.
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Affiliation(s)
- Carina Elsner
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
| | - Gwenllian A Appeltrath
- Institute for Translational HIV Research, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
| | - Margarethe Konik
- Department of Infectious Diseases, West German Centre of Infectious Diseases, University Hospital Essen, University Duisburg-Essen, 45147 Essen, Germany
| | - Janine Parreuter
- Institute for Translational HIV Research, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
| | - Martina Broecker-Preuss
- Laboratory Medicine Section, Department of Medicine, University Hospital Knappschaftskrankenhaus Bochum, Ruhr University Bochum, 44892 Bochum, Germany
| | - Adalbert Krawczyk
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
- Department of Infectious Diseases, West German Centre of Infectious Diseases, University Hospital Essen, University Duisburg-Essen, 45147 Essen, Germany
| | - Stefan Esser
- Institute for Translational HIV Research, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
- Clinic of Dermatology, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
| | - Stefanie Sammet
- Clinic of Dermatology, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
| | - Christina B Karsten
- Institute for Translational HIV Research, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany
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Broecker-Preuss M, Simon D, Fries M, Kornely E, Weber M, Vardarli I, Gilman E, Herrmann K, Görges R. Update on Calcitonin Screening for Medullary Thyroid Carcinoma and the Results of a Retrospective Analysis of 12,984 Patients with Thyroid Nodules. Cancers (Basel) 2023; 15:cancers15082333. [PMID: 37190260 DOI: 10.3390/cancers15082333] [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: 02/21/2023] [Revised: 04/05/2023] [Accepted: 04/14/2023] [Indexed: 05/17/2023] Open
Abstract
BACKGROUND We provide an update on calcitonin (Ctn) screening for the early detection of medullary thyroid carcinoma (MTC) and present the results of a large single-center analysis evaluating sex-specific cut-off-levels and long-term courses. METHODS A total of 12,984 consecutive adult patients (20.1% male and 79.9% female) with thyroid nodules who had undergone routine Ctn measurement were retrospectively analyzed. Patients with confirmed suspicious Ctn values were referred for surgery. RESULTS Ctn measurements were elevated in 207 (1.6%) patients, with values below twice the sex-specific reference limit in 82% of these cases. Further clarification was possible in 124/207 cases, of which MTC could be ruled out in 108 cases. Histopathological assessment confirmed MTC in 16/12,984 patients. CONCLUSIONS Our extrapolated MTC prevalence of 0.14% is significantly lower than that described in early international screening studies. The stimulation test can usually be dispensable when using a decision-making concept based on sex-specific basal Ctn cut-off values. Ctn screening is recommended even in patients with very small thyroid nodules. High quality standards in pre-analytics, laboratory measurements, and the interpretation of data must be ensured, as well as close interdisciplinary cooperation between medical disciplines.
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Affiliation(s)
- Martina Broecker-Preuss
- Department of Medicine, Laboratory Medicine Section, Ruhr-University Bochum, University Hospital, Knappschaftskrankenhaus Bochum, 44892 Bochum, Germany
| | - Dietmar Simon
- Department of Endocrine Surgery, Bethesda Krankenhaus, Thyroid Center Rhine-Ruhr, 47053 Duisburg, Germany
| | - Mirka Fries
- Clinic for Nuclear Medicine, University Hospital Essen, 45147 Essen, Germany
| | - Elisabeth Kornely
- Practice of Endocrinology, Thyroid Center Rhine-Ruhr, 47051 Duisburg, Germany
| | - Manuel Weber
- Clinic for Nuclear Medicine, University Hospital Essen, 45147 Essen, Germany
| | - Irfan Vardarli
- Department of Medicine I, Klinikum Vest GmbH, Knappschaftskrankenhaus Recklinghausen, 45657 Recklinghausen, Germany
- 5th Medical Department, Division of Endocrinology and Diabetes, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Elena Gilman
- Gilman Biometrics, Consultant for Data Processing and Statistics, 50858 Köln, Germany
| | - Ken Herrmann
- Clinic for Nuclear Medicine, University Hospital Essen, 45147 Essen, Germany
| | - Rainer Görges
- Clinic for Nuclear Medicine, University Hospital Essen, 45147 Essen, Germany
- Practice of Nuclear Medicine, Thyroid Center Rhine-Ruhr, 47051 Duisburg, Germany
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Pabst KM, Seifert R, Hirmas N, Broecker-Preuss M, Weber M, Peter Fendler W, Bartel T, Theurer S, Herrmann K, Görges R. Predictive value of highly sensitive basal versus stimulated thyroglobulin measurement in long-term follow-up of thyroid cancer. Endocr Connect 2023; 12:EC-22-0312. [PMID: 36507775 PMCID: PMC9880903 DOI: 10.1530/ec-22-0312] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 12/12/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Recurrence of differentiated thyroid cancer (DTC) is associated with reduced quality of life, and therefore, early identification of patients at risk is urgently needed.Here we investigated the predictive power of various cut-off values of single stimulated thyroglobulin (s-Tg) and single highly sensitive measured, unstimulated thyroglobulin (u-hsTg) measurements close to the end of primary therapy for recurrence-free survival (RFS) in long-term follow-up (>10 years) of patients with DTC. METHODS In DTC patients with adjuvant radioiodine therapy, we assessed retrospectively u-hsTg (6 ± 3 months before s-Tg measurement) and s-Tg measurements (≤24 months after last radioiodine therapy). Positive predictive (PPV)/negative predictive values (NPV) of various cut-off values (s-Tg: 0.5/1.0 ng/mL; u-hsTg: 0.09/0.2 ng/mL) for patient outcomes as well as additional factors associated with disease development were analyzed. RESULTS In total, 175 patients were retrospectively reviewed (tumor recurrence: n = 14/complete remission: n = 161). Examined cut-off values for s-Tg and u-hsTg showed significant predictive power for RFS (log-rank: all P < 0.001). NPV/PPV for s-Tg were 98.6%/36.4%, respectively (0.5 ng/mL cut-off) and 96.7%/42.9%, respectively (1.0 ng/mL cut-off); those for u-hsTg were 97.3%/35.7%, respectively (0.09 ng/mL cut-off) and 95.2%/85.7%, respectively (0.2 ng/mL cut-off). U-hsTg (P < 0.001) and patient age (P < 0.05) were significantly associated with tumor recurrence. One-third of patients with tumor recurrence in the course initially showed undetectable u-hsTg after completion of primary therapy. CONCLUSION With >10 years of follow-up, both s-Tg and u-hsTg have a comparably high predictive power for RFS, while only u-hsTg was significantly associated with a recurrence event.Serial u-hsTg measurements seem warranted since patients with tumor recurrence during follow-up may have an undetectable tumor marker at baseline.
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Affiliation(s)
- Kim Magaly Pabst
- Department of Nuclear Medicine, West German Cancer Center, University Hospital Essen, Essen, Germany
- German Cancer Consortium (DKTK), Partner site University Hospital Essen, Essen, Germany
- Correspondence should be addressed to K M Pabst:
| | - Robert Seifert
- Department of Nuclear Medicine, West German Cancer Center, University Hospital Essen, Essen, Germany
- German Cancer Consortium (DKTK), Partner site University Hospital Essen, Essen, Germany
- Department of Nuclear Medicine, University Hospital Münster, Münster, Germany
| | - Nader Hirmas
- Department of Nuclear Medicine, West German Cancer Center, University Hospital Essen, Essen, Germany
- German Cancer Consortium (DKTK), Partner site University Hospital Essen, Essen, Germany
| | - Martina Broecker-Preuss
- Department of Medicine, Ruhr-University Bochum, University Hospital, Knappschaftskrankenhaus Bochum, Bochum, Germany
| | - Manuel Weber
- Department of Nuclear Medicine, West German Cancer Center, University Hospital Essen, Essen, Germany
- German Cancer Consortium (DKTK), Partner site University Hospital Essen, Essen, Germany
| | - Wolfgang Peter Fendler
- Department of Nuclear Medicine, West German Cancer Center, University Hospital Essen, Essen, Germany
- German Cancer Consortium (DKTK), Partner site University Hospital Essen, Essen, Germany
| | - Timo Bartel
- Department of Nuclear Medicine, West German Cancer Center, University Hospital Essen, Essen, Germany
- German Cancer Consortium (DKTK), Partner site University Hospital Essen, Essen, Germany
| | - Sarah Theurer
- German Cancer Consortium (DKTK), Partner site University Hospital Essen, Essen, Germany
- Institute of Pathology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Ken Herrmann
- Department of Nuclear Medicine, West German Cancer Center, University Hospital Essen, Essen, Germany
- German Cancer Consortium (DKTK), Partner site University Hospital Essen, Essen, Germany
| | - Rainer Görges
- Department of Nuclear Medicine, West German Cancer Center, University Hospital Essen, Essen, Germany
- German Cancer Consortium (DKTK), Partner site University Hospital Essen, Essen, Germany
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Broecker-Preuss M, Arzideh F, Best J, Canbay A, Özçürümez M, Manka P. Comparison of age- and sex-dependent reference limits derived from distinct sources for metabolic measurands in basic liver diagnostics. Z Gastroenterol 2023; 61:50-59. [PMID: 36623543 DOI: 10.1055/a-1994-0809] [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] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Reference intervals for basic liver laboratory diagnostic rely on manufacturers' information, remaining unchanged for more than 20 years. This ignores known age and sex dependencies. METHODS We performed a retrospective cross-sectional study to compare the age-dependent distribution of flagged and non-flagged laboratory findings between reference limits from 3 distinct sources: manufacturer, published reference study, and the truncated maximum likelihood method applied on a cohort of inpatients aged 18-100 years. Discordance rates adjusted for the permissible analytical uncertainty are reported for serum levels of albumin (n= 150,550), alkaline phosphatase (n= 433,721), gamma-GT (n=580,012), AST (n= 510,620), and ALT (n= 704,546). RESULTS The number of flagged findings differed notably between reference intervals compared, except for alkaline phosphatase. AST and alkaline phosphatase increased with age in women. Overall discordance for AP, AST, and ALT remained below 10%, respectively, in both sexes. Albumin decreased with age which led to discordant flags in up to 22% in patients ≥70 years. GGT and ALT peaked in 50-59-year-old men with up to 23.5% and 22.8% discordant flags, respectively. CONCLUSION We assessed the impact of different reference limits on liver related laboratory results and found up to 25 % discordant flags. We suggest to further analyse the diagnostic and economic effects of reference limits adapted to the population of interest even for well-established basic liver diagnostics.
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Affiliation(s)
- Martina Broecker-Preuss
- Medizinische Klinik, Universitätsklinikum Knappschaftskrankenhaus Bochum, Ruhr-Universität Bochum, Bochum, Germany
| | - Farhad Arzideh
- Medizinische Klinik, Universitätsklinikum Knappschaftskrankenhaus Bochum, Ruhr-Universität Bochum, Bochum, Germany
| | - Jan Best
- Medizinische Klinik, Universitätsklinikum Knappschaftskrankenhaus Bochum, Ruhr-Universität Bochum, Bochum, Germany
| | - Ali Canbay
- Medizinische Klinik, Universitätsklinikum Knappschaftskrankenhaus Bochum, Ruhr-Universität Bochum, Bochum, Germany
| | - Mustafa Özçürümez
- Medizinische Klinik, Universitätsklinikum Knappschaftskrankenhaus Bochum, Ruhr-Universität Bochum, Bochum, Germany
| | - Paul Manka
- Medizinische Klinik, Universitätsklinikum Knappschaftskrankenhaus Bochum, Ruhr-Universität Bochum, Bochum, Germany
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Broecker-Preuss M, Mehnert I, Gilman E, Herrmann K, Weber M, Görges R. Evaluation of a new automated assay for high-sensitivity thyroglobulin measurement and comparison with two established high-sensitivity thyroglobulin assays. Pract Lab Med 2021; 26:e00250. [PMID: 34386567 PMCID: PMC8342782 DOI: 10.1016/j.plabm.2021.e00250] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/25/2021] [Accepted: 07/26/2021] [Indexed: 11/29/2022] Open
Abstract
Objective Thyroglobulin (Tg) is an important tumor marker for therapy control and follow-up of differentiated thyroid carcinoma (DTC). Over the past decade, assays for highly sensitive Tg measurement have become increasingly established. We evaluated a newly developed high-sensitive Tg assay running on an automated platform (LIAISON® Tg II Gen assay, DiaSorin), with a limit of quantification of 0.10 ng/ml. Design and Methods Tg values of 166 sera from subjects without thyroid diseases and of more than 500 sera of well-defined DTC patients were determined with the new LIAISON® Tg II Gen assay and compared with two established assays (Elecsys® Tg II/Roche, and Medizym® Tg REM/Medipan). Results Tg reference values from healthy subjects were up to 37.93 ng/ml (women) resp. 24.59 ng/ml (men) with the LIAISON® Tg II Gen assay. Tg values showed good correlations in healthy subjects and patients with active tumorous disease. In contrast, Tg values in the very low range from cured thyroidectomized patients were poorly comparable between the three assays, while clinical differences between the cohorts were correctly reflected by all assays. Conclusions With the new LIAISON® Tg II Gen assay, another automated assay standardized against the first International Reference Preparation CRM-457 for highly sensitive measurement of Tg values is available.
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Affiliation(s)
- Martina Broecker-Preuss
- Department of Clinical Chemistry and Laboratory Medicine, University Hospital of Essen, Germany
| | - Irina Mehnert
- Department of Nuclear Medicine, University Hospital of Essen, Germany
| | - Elena Gilman
- Gilman Biometrics, Consultant for Data Processing and Statistics, Köln, Germany
| | - Ken Herrmann
- Department of Nuclear Medicine, University Hospital of Essen, Germany
| | - Manuel Weber
- Department of Nuclear Medicine, University Hospital of Essen, Germany
| | - Rainer Görges
- Department of Nuclear Medicine, University Hospital of Essen, Germany
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Pechlivanis S, Mahabadi AA, Hoffmann P, Nöthen MM, Broecker-Preuss M, Erbel R, Moebus S, Stang A, Jöckel KH. Association between lipoprotein(a) (Lp(a)) levels and Lp(a) genetic variants with coronary artery calcification. BMC Med Genet 2020; 21:62. [PMID: 32220223 PMCID: PMC7099786 DOI: 10.1186/s12881-020-01003-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 03/18/2020] [Indexed: 12/12/2022]
Abstract
Background To examine the association between lipoprotein(a) (Lp(a)) levels, LPA (rs10455872 and rs3798220) and IL1F9 (rs13415097) single nucleotide polymorphisms (SNPs) with coronary artery calcification (CAC), an important predictor for coronary artery disease (CAD). Methods We used data from 3799 (mean age ± SD: 59.0 ± 7.7 years, 47.1% men) Heinz Nixdorf Recall study participants. We applied linear regression models to explore the relation between the log-transformed Lp(a) levels and LPA and IL1F9 SNPs with loge (CAC + 1). The association between the SNPs and log-transformed Lp(a) levels was further assessed using linear regression. The models were adjusted for age and sex (Model 1) and additionally for Lp(a) levels (Model 2). Results We observed a statistically significant association between log-transformed Lp(a) levels and CAC (Model 1: beta per log-unit increase in Lp(a) levels = 0.11; 95% confidence interval [95% CI] [0.04; 0.18], p = 0.002). Furthermore, the LPA SNP rs10455872 showed a statistically significant association with CAC (Model 1: beta per allele = 0.37 [0.14; 0.61], p = 0.002). The association between rs10455872 and CAC was attenuated after adjustment for Lp(a) levels (Model 2: beta per allele = 0.26 [− 0.01; 0.53], p = 0.06). Both LPA SNPs also showed a statistically significant association with Lp(a) levels (Model 1: betars10455872 per allele: 1.56 [1.46; 1.65], p < 0.0001 and betars3798220 per allele: 1.51 [1.33; 1.69], p < 0.0001)). The Mendelian randomization analysis showed that Lp(a) is a causal risk factor for CAC (estimate per log-unit increase in Lp(a) levels (95% CI), p: 0.27 [0.11; 0.44], p = 0.001). The IL1F9 SNP did not show any statistically significant association with Lp(a) levels or with CAC. Conclusions We provide evidence for the association of LPA rs10455872 with higher levels of Lp(a) and CAC in our study. The results of our study suggest that rs10455872, mediated by Lp(a) levels, might play a role in promoting the development of atherosclerosis leading to cardiovascular disease events.
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Affiliation(s)
- Sonali Pechlivanis
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Essen, Germany. .,Institute of Pharmacology and Toxicology, Centre for Biomedical Education and Research, Witten/Herdecke University, Witten, Germany.
| | - Amir A Mahabadi
- Department of Cardiology and Vascular Medicine, West German Heart and Vascular Center, University Hospital of Essen, University Duisburg-Essen, Essen, Germany
| | - Per Hoffmann
- Department of Genomics, Life & Brain Center, University of Bonn, Bonn, Germany.,Division of Medical Genetics, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Markus M Nöthen
- Division of Medical Genetics, Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Martina Broecker-Preuss
- Department of Clinical Chemistry and Laboratory Medicine, University Duisburg-Essen, Essen, Germany
| | - Raimund Erbel
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Essen, Germany
| | - Susanne Moebus
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Essen, Germany.,Centre for Urban Epidemiology, University Hospital Essen, Essen, Germany
| | - Andreas Stang
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Essen, Germany.,Centre for Clinic Epidemiology, University Hospital of Essen, Essen, Germany
| | - Karl-Heinz Jöckel
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Essen, Germany
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Broecker-Preuss M, Becher-Boveleth N, Bockisch A, Dührsen U, Müller S. Regulation of glucose uptake in lymphoma cell lines by c-MYC- and PI3K-dependent signaling pathways and impact of glycolytic pathways on cell viability. J Transl Med 2017; 15:158. [PMID: 28724379 PMCID: PMC5517804 DOI: 10.1186/s12967-017-1258-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [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: 05/03/2017] [Accepted: 07/04/2017] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Changes in glucose and energy metabolism contribute to the altered phenotype of cancer cells and are the basis for positron emission tomography with 18F-fluoro-2-deoxy-D-glucose (FDG) to visualize tumors in vivo. The molecular background of the enhanced glucose uptake and its regulation in lymphoma cells is not fully clarified and may provide new possibilities to reverse the altered metabolism. Thus in this study we investigated regulation of glucose uptake by different signaling pathways. Furthermore, the effect of the glucose analog 2-deoxy-D-glucose (2-DG) alone and in combination with other inhibitors on cell survival was studied. METHODS An FDG uptake assay was established and uptake of FDG by lymphoma cells was determined after incubation with inhibitors of the c-MYC and the PI3K signalling pathways that are known to be activated in lymphoma cells and able to regulate glucose metabolism. Inhibitors of MAPK signalling pathways whose role in altered metabolism is still unclear were also investigated. Expression of mRNAs of the glucose transporter 1 (GLUT1), hexokinase 2 (HK2), glucose-6-phosphatase (G6Pase) and lactate dehydrogenase A (LDHA) and of the glucose metabolism-regulating micro RNAs (miRNA) miR21, -23a, -133a, -133b, -138-1 and -143 was determined by RT-PCR. Cell viability was analysed by MTT assay. RESULTS Treatment with the c-MYC inhibitor 10058-F4 and inhibitors of the PI3K/mTOR pathway diminished uptake of FDG in all three cell lines, while inhibition of MAPK pathways had no effect on glucose uptake. Expression of glycolysis-related genes and miRNAs were diminished, although to a variable degree in the three cell lines. The c-MYC inhibitor, the PI3K inhibitor LY294002, the mTOR inhibitor Rapamycin and 2-DG all diminished the number of viable cells. Interestingly, in combination with 2-DG, the c-MYC inhibitor, LY294002 and the p38 MAPK inhibitor SB203580 had synergistic effects on cell viability in all three cell lines. CONCLUSIONS c-MYC- and PI3K/mTOR-inhibitors decreased viability of the lymphoma cells and led to decreased glucose uptake, expression of glycolysis-associated genes, and glucose metabolism-regulating miRNAs. Inhibition of HK by 2-DG reduced cell numbers as a single agent and synergistically with inhibitors of other intracellular pathways. Thus, targeted inhibition of the pathways investigated here could be a strategy to suppress the glycolytic phenotype of lymphoma cells and reduce proliferation.
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Affiliation(s)
- Martina Broecker-Preuss
- Department of Nuclear Medicine, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany. .,Department of Clinical Chemistry, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany.
| | - Nina Becher-Boveleth
- Department of Nuclear Medicine, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany.,Department of Hematology, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany.,Institute of Pathology, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany
| | - Andreas Bockisch
- Department of Nuclear Medicine, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany
| | - Ulrich Dührsen
- Department of Hematology, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany
| | - Stefan Müller
- Department of Nuclear Medicine, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany
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Broecker-Preuss M, Becher-Boveleth N, Müller S, Mann K. The BH3 mimetic drug ABT-737 induces apoptosis and acts synergistically with chemotherapeutic drugs in thyroid carcinoma cells. Cancer Cell Int 2016; 16:27. [PMID: 27042160 PMCID: PMC4818940 DOI: 10.1186/s12935-016-0303-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [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: 12/02/2015] [Accepted: 03/24/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Patients with dedifferentiated and anaplastic thyroid carcinomas that do not take up radioiodine are resistant to chemotherapeutic treatment and external irradiation and thus are difficult to treat. Direct induction of apoptosis is a promising approach in these apoptosis-resistant tumor cells. The BH3 mimetic ABT-737 belongs to a new class of drugs that target anti-apoptotic proteins of the BCL-2 family and facilitate cell death. The purpose of this study was to investigate the effect of ABT-737 alone or in combination with chemotherapeutic drugs on thyroid carcinoma cell lines. METHODS A total of 16 cell lines derived from follicular, papillary, and anaplastic thyroid carcinomas were treated with ABT-737. Cell viability was measured with MTT assay. Cell death was determined by cell cycle phase distribution and subG1 peak analyses, determination of caspase 3/7 activity and caspase cleavage products, lactate dehydrogenase (LDH) liberation assays and LC3 analysis by western blot. RESULTS The number of viable cells was decreased in all cell lines examined after ABT-737 treatment, with IC50 values ranging from 0.73 to 15.6 μM. Biochemical markers of apoptosis like caspase activities, caspase cleavage products and DNA fragmentation determined as SubG1 peak were elevated after ABT-737 treatment, but no LC3 cleavage was induced by ABT-737 indicating no autophagic processes. In combination with doxorubicin and gemcitabine, ABT-737 showed synergistic effects on cell viability. CONCLUSIONS With these experiments we demonstrated the efficacy of the BH3 mimetic drug ABT-737 against dedifferentiated thyroid carcinoma cells of various histological origins and showed synergistic effects with chemotherapeutic drugs. ABT-737-treated cells underwent an apoptotic cell death. ABT-737 and related BH3 mimetic drugs, alone or in combination, may thus be of value as a new therapeutic option for dedifferentiated thyroid carcinomas.
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Affiliation(s)
- Martina Broecker-Preuss
- Department of Endocrinology and Metabolism, Division of Laboratory Research, University Hospital Essen, Hufelandstr. 55, 45122 Essen, Germany ; Department of Clinical Chemistry, University Hospital Essen, Hufelandstr. 55, Essen, Germany
| | - Nina Becher-Boveleth
- Department of Endocrinology and Metabolism, Division of Laboratory Research, University Hospital Essen, Hufelandstr. 55, 45122 Essen, Germany ; Clinic of Nuclear Medicine, University Hospital Essen, Hufelandstr. 55, Essen, Germany
| | - Stefan Müller
- Department of Nuclear Medicine, University Hospital Essen, Hufelandstr. 55, 45122 Essen, Germany
| | - Klaus Mann
- Department of Endocrinology and Metabolism, Division of Laboratory Research, University Hospital Essen, Hufelandstr. 55, 45122 Essen, Germany ; Center of Endocrinology Alter Hof München, Dienerstr. 12, Munich, Germany
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Broecker-Preuss M, Becher-Boveleth N, Mann K. Cell Death Induction by the Indirubin Derivative 7BIO and the BH3 Mimetic Drugs ABT-737 and GX15-070 in Medullary Thyroid Carcinoma Cells. Exp Clin Endocrinol Diabetes 2016; 124:324-30. [DOI: 10.1055/s-0042-101162] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- M. Broecker-Preuss
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Essen, Germany
| | - N. Becher-Boveleth
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Essen, Germany
| | - K. Mann
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Essen, Germany
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Dlugaj M, Winkler A, Weimar C, Dürig J, Broecker-Preuss M, Dragano N, Moebus S, Jöckel KH, Erbel R, Eisele L. Anemia and Mild Cognitive Impairment in the German General Population. J Alzheimers Dis 2015; 49:1031-42. [PMID: 26599053 DOI: 10.3233/jad-150434] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Martha Dlugaj
- Department of Neurology, University Hospital of Essen, University of Duisburg-Essen, Essen, Germany
| | - Angela Winkler
- Department of Neurology, University Hospital of Essen, University of Duisburg-Essen, Essen, Germany
| | - Christian Weimar
- Department of Neurology, University Hospital of Essen, University of Duisburg-Essen, Essen, Germany
| | - Jan Dürig
- Department of Hematology, University Hospital of Essen, University of Duisburg-Essen, Essen, Germany
| | - Martina Broecker-Preuss
- Department of Endocrinology, Division of Laboratory Research, University Hospital of Essen, University Duisburg-Essen, Essen, Germany
| | - Nico Dragano
- Institute for Medical Sociology, Medical Faculty, University of Düsseldorf, Düsseldorf, Germany
| | - Susanne Moebus
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Essen, Germany
| | - Karl-Heinz Jöckel
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Essen, Germany
| | - Raimund Erbel
- Clinic of Cardiology, West German Heart Centre, University Hospital of Essen, University Duisburg-Essen, Essen, Germany
| | - Lewin Eisele
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Essen, Germany
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Winkler A, Weimar C, Jöckel KH, Erbel R, Dragano N, Broecker-Preuss M, Moebus S, Führer-Sakel D, Dlugaj M. Thyroid-Stimulating Hormone and Mild Cognitive Impairment: Results of the Heinz Nixdorf Recall Study. J Alzheimers Dis 2015; 49:797-807. [PMID: 26519440 DOI: 10.3233/jad-150561] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 12/18/2022]
Abstract
BACKGROUND Although some studies reported on the association of serum thyroid-stimulating hormone (TSH) concentration and cognition, only one population-based study investigated the association of TSH concentration and mild cognitive impairment (MCI). OBJECTIVE To investigate the gender-specific association of low- and high-normal TSH concentrations with MCI in euthyroid participants. METHODS Analysis sample 1 included 2,563 euthyroid participants (aged 50-80 years) from the second examination of the population-based Heinz Nixdorf Recall study. Gender-specific TSH quintiles (Q1 low, Q2-Q4 middle, Q5 high TSH concentration) were determined and group comparisons of age- and education-adjusted mean scores were performed for all cognitive subtests. Analysis sample 2 included 378 participants with MCI and 931 cognitively normal participants. MCI was diagnosed according to previously published MCI criteria. Multivariate logistic regression models were performed using TSH quintiles (Q2-Q4 as reference) to assess the association of low- and high-normal TSH concentration with MCI. Models were performed unadjusted and adjusted for sociodemographic and cardiovascular risk factors. RESULTS Group comparisons showed significant differences only in the immediate recall of the verbal memory task in women. Only women showed a strong association of high-normal TSH concentration with MCI (unadjusted: odds ratio 2.09, 95% confidence interval 1.29-3.37, full adjusted: 1.86, 1.06-3.27). There was no association with low-normal TSH concentration in women and no association of either low- or high-normal TSH concentration with MCI in men. CONCLUSIONS These results suggest that women with high-normal TSH concentration might be at higher risk of cognitive decline. This needs to be confirmed in the longitudinal analysis.
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Affiliation(s)
- Angela Winkler
- Department of Neurology, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - Christian Weimar
- Department of Neurology, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - Karl-Heinz Jöckel
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Germany
| | - Raimund Erbel
- Clinic of Cardiology, West German Heart Centre, University Hospital of Essen, University Duisburg-Essen, Germany
| | - Nico Dragano
- Institute for Medical Sociology, Centre for Healthy and Society, University of Düsseldorf, Germany
| | - Martina Broecker-Preuss
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Duisburg-Essen, Essen, Germany
| | - Susanne Moebus
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Germany
| | - Dagmar Führer-Sakel
- Department of Endocrinology, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - Martha Dlugaj
- Department of Neurology, University Hospital of Essen, University of Duisburg-Essen, Germany
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Broecker-Preuss M, Becher-Boveleth N, Gall S, Rehmann K, Schenke S, Mann K. Induction of atypical cell death in thyroid carcinoma cells by the indirubin derivative 7-bromoindirubin-3'-oxime (7BIO). Cancer Cell Int 2015; 15:97. [PMID: 26464561 PMCID: PMC4603293 DOI: 10.1186/s12935-015-0251-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 07/30/2015] [Accepted: 10/05/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The indirubin derivative 7-bromoindirubin-3'-oxime (7BIO) has already shown anticancer properties by causing cell death in some tumour cell lines and may be a new therapeutic option for treatment-resistant tumour cells. Since dedifferentiated and anaplastic thyroid carcinomas do not take up radioiodine and are insensitive to chemotherapeutic treatment and external radiation, direct cell death induction in these tumour cells may be a promising approach. We thus investigated the effect of 7BIO on thyroid carcinoma cell lines of different histological origins and characterized the type of cell death induction by 7BIO. METHODS Cell viability was measured with MTT assay. Cell death was analysed by caspase 3/7 activity, lactate dehydrogenase liberation, caspase cleavage products, DNA fragmentation, cell cycle phase distribution and LC3B analysis. RESULTS After 7BIO treatment, cell viability was reduced in all 14 thyroid carcinoma cell lines investigated. Treated cells showed DNA fragmentation, cell cycle arrest and lactate dehydrogenase liberation but no LC3B cleavage. Caspase activation following 7BIO treatment was found in five of six cell lines investigated. Interestingly, inhibition of caspases had no effect on viability of the cells after 7BIO incubation. CONCLUSIONS Our results indicate that 7BIO efficiently killed dedifferentiated thyroid carcinoma cells. It induced a non-classical kind of cell death that was caspase-independent and includes DNA fragmentation. 7BIO and related indirubin components thus may have value as a new therapeutic option for dedifferentiated thyroid cancer irrespective of the exact target molecules and the kind of cell death they induce.
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Affiliation(s)
- Martina Broecker-Preuss
- Division of Laboratory Research, Department of Endocrinology and Metabolism, University Hospital Essen, Hufelandstr. 55, Essen, Germany ; Department of Clinical Chemistry, University Hospital Essen, Hufelandstr. 55, Essen, Germany
| | - Nina Becher-Boveleth
- Division of Laboratory Research, Department of Endocrinology and Metabolism, University Hospital Essen, Hufelandstr. 55, Essen, Germany ; Clinic of Nuclear Medicine, University Hospital Essen, Hufelandstr. 55, Essen, Germany
| | - Susanne Gall
- Division of Laboratory Research, Department of Endocrinology and Metabolism, University Hospital Essen, Hufelandstr. 55, Essen, Germany
| | - Katrin Rehmann
- Division of Laboratory Research, Department of Endocrinology and Metabolism, University Hospital Essen, Hufelandstr. 55, Essen, Germany ; Department of Clinical Chemistry, University Hospital Essen, Hufelandstr. 55, Essen, Germany
| | - Susann Schenke
- Division of Laboratory Research, Department of Endocrinology and Metabolism, University Hospital Essen, Hufelandstr. 55, Essen, Germany
| | - Klaus Mann
- Division of Laboratory Research, Department of Endocrinology and Metabolism, University Hospital Essen, Hufelandstr. 55, Essen, Germany ; Center of Endocrinology Alter Hof München, Dienerstr. 12, Munich, Germany
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13
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Broecker-Preuss M, Viehof J, Jastrow H, Becher-Boveleth N, Fuhrer D, Mann K. Cell death induction by the BH3 mimetic GX15-070 in thyroid carcinoma cells. J Exp Clin Cancer Res 2015. [PMID: 26198850 PMCID: PMC4510903 DOI: 10.1186/s13046-015-0186-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Background The evasion of cell death is one of the hallmarks of cancer, contributing to both tumor progression and resistance to therapy. Dedifferentiated and anaplastic thyroid carcinomas that do not take up radioiodine are resistant to conventional anticancer treatments and patients with these tumors are difficult to treat. BH3 mimetics are a new class of drugs that target anti-apoptotic proteins of the BCL-2 family and promote cell death. The purpose of this study was to analyze the molecular effects of the BH3 mimetic GX15-070 on thyroid carcinoma cell lines and to characterize cell death induced by GX15-070. Methods A total of 17 cell lines derived from follicular, papillary, and anaplastic thyroid carcinomas were treated with GX15-070. Cell viability was measured with MTT assay while cell cycle phase distribution and subG1 peaks were determined after propidium iodide staining. We assessed cell death via the caspase 3/7 activity, caspase cleavage products, lactate dehydrogenase (LDH) liberation assays, and a LC3 analysis by western blot. Ultrastructural changes were analysed by electron microscopy of GX15-070-treated cells. Results After GX15-070 treatment, the number of viable cells was decreased in all cell lines examined, with IC50 values ranging from 48nM to 3.25 μM. We observed biochemical markers of autophagic cell death and necrosis like LC3 conversion and LDH release after the GX15-070 treatment. Electron microscopy revealed several common characteristic ultrastructural changes like swelling of mitochondria, dilatation of rough endoplasmic reticulum, membrane blebbing and formation of vacuoles. GX15-070 treatment induced DNA fragmentation detected by subG1-peak induction and an arrest in G1 phase of the cell cycle. Caspase activation after GX15-070 incubation was detected but had no effect on viability of cells. Conclusions With these experiments we demonstrated the efficacy of the BH3 mimetic drug GX15-070 acting against dedifferentiated thyroid carcinoma cells of various histological origins by the induction of cell death. GX15-070-treated cells underwent non-classical cell death with signs of apoptosis, autophagy and necrosis in parallel. GX15-07 and related compounds thus may be a new therapeutic option for dedifferentiated thyroid carcinoma of various histological subtypes.
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Affiliation(s)
- Martina Broecker-Preuss
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Hufelandstrasse 55, Essen, Germany. .,Present address: Department of Clinical Chemistry, University Hospital Essen, Hufelandstrasse 55, 45122, Essen, Germany.
| | - Jan Viehof
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Hufelandstrasse 55, Essen, Germany. .,Present address: Ruhrlandklinik, University Hospital Essen, Tüschener Weg 40, 45239, Essen, Germany.
| | - Holger Jastrow
- Institute of Anatomy, University Hospital Essen, Hufelandstrasse 55, Essen, Germany.
| | - Nina Becher-Boveleth
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Hufelandstrasse 55, Essen, Germany. .,Present address: Clinic of Nuclear Medicine, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany.
| | - Dagmar Fuhrer
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Hufelandstrasse 55, Essen, Germany.
| | - Klaus Mann
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Hufelandstrasse 55, Essen, Germany. .,Present address: Center of Endocrinology Alter Hof München, Dienerstr. 12, 80331, Munich, Germany.
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Effenberger-Neidnicht K, Brencher L, Broecker-Preuss M, Hamburger T, Petrat F, de Groot H. Immune stimulation by exogenous melatonin during experimental endotoxemia. Inflammation 2015; 37:738-44. [PMID: 24385237 DOI: 10.1007/s10753-013-9792-y] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Melatonin has been shown to enhance the immune response under immune-compromised conditions. However, its immune-modulatory effects under inflammatory conditions are unclear at present. Both pro- and anti-inflammation has been reported. To study time-dependent effects of melatonin on the general immune response during endotoxemia in more detail, we used two models in male rats: per-acute endotoxemia was induced by lipopolysaccharide (LPS) bolus injection (2.5 mg/kg), sub-acute endotoxemia by LPS infusion (2.5 mg/kg × h). Melatonin was applied directly before and 2 h after LPS administration (3 mg/kg, each). The LPS-induced formation of the pro-inflammatory cytokines tumor necrosis factor alpha, interferon-gamma, interleukin (IL)-1α/β, IL-5, and IL-6 and of the anti-inflammatory cytokine IL-10 was further amplified by melatonin, although it was only significant during per-acute endotoxemia. In both models, melatonin had no effect on the LPS-induced nitric oxide release. These findings show that exogenous melatonin is capable of enhancing the general immune response under inflammatory conditions.
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Broecker-Preuss M, Müller S, Britten M, Worm K, Schmid KW, Mann K, Fuhrer D. Sorafenib inhibits intracellular signaling pathways and induces cell cycle arrest and cell death in thyroid carcinoma cells irrespective of histological origin or BRAF mutational status. BMC Cancer 2015; 15:184. [PMID: 25879531 PMCID: PMC4377064 DOI: 10.1186/s12885-015-1186-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [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: 12/23/2014] [Accepted: 03/12/2015] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Patients with dedifferentiated or anaplastic thyroid carcinomas currently lack appropriate treatment options. Kinase inhibitors are among the most promising new agents as alternative strategies. The BRAF- and multi-kinase inhibitor, sorafenib, has already shown antitumor effects in thyroid carcinoma patients in a phase III clinical trial. In this study we aim to better characterize molecular effects and efficacy of sorafenib against thyroid carcinoma cells with various histological origins and different BRAF mutational status. Analysis of different signaling pathways affected by sorafenib may contribute to assist a more specific therapy choice with fewer side effects. Twelve thyroid carcinoma cell lines derived from anaplastic, follicular and papillary thyroid carcinomas with wildtype or mutationally activated BRAF were treated with sorafenib. Growth inhibition, cell cycle arrest, cell death induction and inhibition of intracellular signaling pathways were then comprehensively analyzed. METHODS Cell viability was analyzed by MTT assay, and the cell cycle was assessed by flow cytometry after propidium iodide staining. Cell death was assessed by lactate dehydrogenase liberation assays, caspase activity assays and subG1 peak determinations. Inhibition of intracellular pathways was analyzed in dot blot and western blot analyses. RESULTS Sorafenib inhibited proliferation of all thyroid carcinoma cell lines tested with IC50 values ranging between 1.85 and 4.2 μM. Cells derived from papillary carcinoma harboring the mutant BRAF (V600E) allele were slightly more sensitive to sorafenib than those harboring wildtype BRAF. Cell cycle analyses and caspase assays showed a sorafenib-dependent induction of apoptosis in all cell lines, whereas increased lactate dehydrogenase release suggested cell membrane disruption. Sorafenib treatment caused a rapid inhibition of various MAP kinases in addition to inhibiting AKT and receptor tyrosine kinases. CONCLUSIONS Sorafenib inhibited multiple intracellular signaling pathways in thyroid carcinoma cells, which resulted in cell cycle arrest and the initiation of apoptosis. Sorafenib was effective against all thyroid carcinoma cell lines regardless of their tumor subtype origin or BRAF status, confirming that sorafenib is therapeutically beneficial for patients with any subtype of dedifferentiated thyroid cancer. Inhibition of single intracellular targets of sorafenib in thyroid carcinoma cells may allow the development of more specific therapeutic intervention with less side effects.
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Affiliation(s)
- Martina Broecker-Preuss
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Hufelandstr. 55, Essen, Germany. .,Present address: Department of Clinical Chemistry, University Hospital Essen, Hufelandstr. 55, 45122, Essen, Germany.
| | - Stefan Müller
- Department of Nuclear Medicine, University Hospital Essen, Hufelandstr. 55, Essen, Germany.
| | - Martin Britten
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Hufelandstr. 55, Essen, Germany. .,Present address: University Hospital Essen, Klinik für Anästhesiologie & Intensivmedizin, Hufelandstr. 55, 45122, Essen, Germany.
| | - Karl Worm
- Institute of Pathology at the University Hospital Essen, Hufelandstr. 55, Essen, Germany.
| | - Kurt Werner Schmid
- Institute of Pathology at the University Hospital Essen, Hufelandstr. 55, Essen, Germany.
| | - Klaus Mann
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Hufelandstr. 55, Essen, Germany. .,Present address: Center of Endocrinology Alter Hof München, Dienerstr. 12, 80331, München, Germany.
| | - Dagmar Fuhrer
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Hufelandstr. 55, Essen, Germany.
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Broecker-Preuss M, Baten J, Sheu-Grabellus SY, Görges R, Bockisch A, Schmid KW, Führer D, Mann K. Expression of the cAMP binding protein EPAC1 in thyroid tumors and growth regulation of thyroid cells and thyroid carcinoma cells by EPAC proteins. Horm Metab Res 2015; 47:200-8. [PMID: 25372777 DOI: 10.1055/s-0034-1390484] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 10/24/2022]
Abstract
The thyrotropin receptor-cAMP pathway is central in growth regulation of thyroid cells and thyroid tumorigenesis, and it regulates expression of thyroid specific genes. Recently, 2 new protein kinase A-independent cAMP effectors named EPAC1 and 2 were described that activate additional intracellular pathways. The aim of our study was to investigate the role of EPAC proteins in growth regulation of thyroid cells and thyroid carcinomas. EPAC1 expression was investigated immunohistochemically in tissues of various thyroid tumors. Utilizing MTT assay, the effect of EPAC stimulation on proliferation in thyroid carcinoma cells and in non-transformed rat FRTL5 cells was investigated. The activation of intracellular signaling pathways was examined by RAP pull-down assay and Western blots. EPAC1 expression was strong in non-oxyphilic follicular thyroid adenomas and carcinomas and in follicular papillary thyroid carcinomas. It was moderate in oxyphilic follicular tumors and classical and tall cell papillary carcinomas. In contrast, EPAC1 expression was low in poorly differentiated carcinomas and very low in anaplastic carcinomas. Thyroid carcinoma cell lines showed no or very weak EPAC1 expression and exhibited no growth-promoting effect after EPAC stimulation. Non-transformed rat FRTL5 cells were growth-stimulated by an EPAC-specific cAMP-analogue and showed EPAC-dependent activation of RAP, ERK, and p70S6 kinase. EPAC1 expression and cellular response to EPAC activation in rat FRTL5 cells reflect cellular responses to cAMP and TSH stimulation in non-transformed thyroid cells. In undifferentiated thyroid carcinomas, loss of EPAC1 expression may be in accordance with the loss of thyroid-specific functions and the loss of responsiveness of the TSHR-cAMP pathway.
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Affiliation(s)
- M Broecker-Preuss
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Essen, Germany
| | - J Baten
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Essen, Germany
| | | | - R Görges
- Clinic of Nuclear Medicine, University Hospital Essen, Essen, Germany
| | - A Bockisch
- Clinic of Nuclear Medicine, University Hospital Essen, Essen, Germany
| | - K W Schmid
- Institute of Pathology, University Hospital Essen, Essen, Germany
| | - D Führer
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Essen, Germany
| | - K Mann
- Department of Endocrinology and Metabolism, and Division of Laboratory Research, University Hospital Essen, Essen, Germany
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Kara K, Lehmann N, Neumann T, Kälsch H, Möhlenkamp S, Dykun I, Broecker-Preuss M, Pundt N, Moebus S, Jöckel KH, Erbel R, Mahabadi AA. NT-proBNP is superior to BNP for predicting first cardiovascular events in the general population: the Heinz Nixdorf Recall Study. Int J Cardiol 2015; 183:155-61. [PMID: 25666125 DOI: 10.1016/j.ijcard.2015.01.082] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [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: 09/14/2014] [Revised: 12/18/2014] [Accepted: 01/28/2015] [Indexed: 02/05/2023]
Abstract
BACKGROUND B-type natriuretic peptide (BNP) as well as N-terminal-proBNP (NT-proBNP) are associated with cardiac events in the general population. Yet, data from the general population comparing both peptides for their prognostic value is lacking. METHODS Participants from the population-based Heinz-Nixdorf-Recall-study without cardiovascular diseases were included. Associations of BNP and NT-proBNP with incident cardiovascular events (incident myocardial infarction, stroke, or cardiovascular death) were assessed using Cox regression; prognostic value was addressed using Harrell's c statistic. RESULTS From overall 3589 subjects (mean age: 59.3 ± 7.7 yrs, 52.5% female), 235 subjects developed a cardiovascular event during 8.9 ± 2.2 yrs of follow-up. In regression analysis both natriuretic peptides were associated with incident cardiovascular events, independent of traditional risk factors (hazard ratio (HR) per unit increase on log-scale (95% CI): NT-proBNP: 1.60 (1.39; 1.84); BNP: 1.37 (1.19; 1.58), p<0.0001 respectively). Specifically looking at subjects <60 yrs only NT-proBNP, was linked with events (HR (95% CI): 1.59 (1.19; 2.13) for NT-proBNP, p=0.0019; HR: 1.25 (0.94; 1.65) for BNP, p=0.12, after adjustment for age and gender). Similar results were observed for females (HR (95% CI) 1.65 (1.28; 2.12), p=0.0001 for NT-proBNP, and 1.24 (0.96; 1.61), p=0.10 for BNP after adjustment for age). Adding NT-proBNP/BNP to traditional risk factors increased the prognostic value, with effects being stronger for NT-proBNP (Harrell's c, 0.724 to 0.741, p=0.034) as compared to BNP (0.724 to 0.732, p=0.20). CONCLUSION Both, NT-proBNP and BNP are associated with future cardiovascular events in the general population. However, when both are available, NT-proBNP seems to be superior due to its higher prognostic value, especially in younger subjects and females.
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Affiliation(s)
- Kaffer Kara
- The Cardiovascular Center, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany; The West-German Heart Center, Department of Cardiology, University of Duisburg-Essen, Essen, Germany.
| | - Nils Lehmann
- The Institute for Medical Informatics, Biometry and Epidemiology, University of Duisburg-Essen, Essen, Germany
| | - Till Neumann
- The West-German Heart Center, Department of Cardiology, University of Duisburg-Essen, Essen, Germany
| | - Hagen Kälsch
- The West-German Heart Center, Department of Cardiology, University of Duisburg-Essen, Essen, Germany
| | | | - Iryna Dykun
- The West-German Heart Center, Department of Cardiology, University of Duisburg-Essen, Essen, Germany
| | - Martina Broecker-Preuss
- Institute of Clinical Chemistry and Laboratory Medicine, University of Duisburg-Essen, Essen, Germany
| | - Noreen Pundt
- The Institute for Medical Informatics, Biometry and Epidemiology, University of Duisburg-Essen, Essen, Germany
| | - Susanne Moebus
- The Institute for Medical Informatics, Biometry and Epidemiology, University of Duisburg-Essen, Essen, Germany
| | - Karl-Heinz Jöckel
- The Institute for Medical Informatics, Biometry and Epidemiology, University of Duisburg-Essen, Essen, Germany
| | - Raimund Erbel
- The West-German Heart Center, Department of Cardiology, University of Duisburg-Essen, Essen, Germany
| | - Amir A Mahabadi
- The West-German Heart Center, Department of Cardiology, University of Duisburg-Essen, Essen, Germany
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Dohle DS, Petrat F, Tsagakis K, Pilarczyk K, Bestendonk C, Broecker-Preuss M, Jakob H, de Groot H. Early Detection of Patients at Risk for Laparotomy by Serum Markers. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1544307] [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: 10/24/2022]
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Henning Y, Vole C, Begall S, Bens M, Broecker-Preuss M, Sahm A, Szafranski K, Burda H, Dammann P. Unusual ratio between free thyroxine and free triiodothyronine in a long-lived mole-rat species with bimodal ageing. PLoS One 2014; 9:e113698. [PMID: 25409169 PMCID: PMC4237498 DOI: 10.1371/journal.pone.0113698] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [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: 07/03/2014] [Accepted: 10/27/2014] [Indexed: 12/03/2022] Open
Abstract
Ansell's mole-rats (Fukomys anselli) are subterranean, long-lived rodents, which live in eusocial families, where the maximum lifespan of breeders is twice as long as that of non-breeders. Their metabolic rate is significantly lower than expected based on allometry, and their retinae show a high density of S-cone opsins. Both features may indicate naturally low thyroid hormone levels. In the present study, we sequenced several major components of the thyroid hormone pathways and analyzed free and total thyroxine and triiodothyronine in serum samples of breeding and non-breeding F. anselli to examine whether a) their thyroid hormone system shows any peculiarities on the genetic level, b) these animals have lower hormone levels compared to euthyroid rodents (rats and guinea pigs), and c) reproductive status, lifespan and free hormone levels are correlated. Genetic analyses confirmed that Ansell's mole-rats have a conserved thyroid hormone system as known from other mammalian species. Interspecific comparisons revealed that free thyroxine levels of F. anselli were about ten times lower than of guinea pigs and rats, whereas the free triiodothyronine levels, the main biologically active form, did not differ significantly amongst species. The resulting fT4:fT3 ratio is unusual for a mammal and potentially represents a case of natural hypothyroxinemia. Comparisons with total thyroxine levels suggest that mole-rats seem to possess two distinct mechanisms that work hand in hand to downregulate fT4 levels reliably. We could not find any correlation between free hormone levels and reproductive status, gender or weight. Free thyroxine may slightly increase with age, based on sub-significant evidence. Hence, thyroid hormones do not seem to explain the different ageing rates of breeders and non-breeders. Further research is required to investigate the regulatory mechanisms responsible for the unusual proportion of free thyroxine and free triiodothyronine.
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Affiliation(s)
- Yoshiyuki Henning
- Department of General Zoology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
- * E-mail:
| | - Christiane Vole
- Department of General Zoology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | - Sabine Begall
- Department of General Zoology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | - Martin Bens
- Genome Analysis, Leibniz Institute for Age Research - Fritz Lipmann Institute, Jena, Germany
| | - Martina Broecker-Preuss
- Department of Endocrinology and Metabolism and Division of Laboratory Research, University Hospital, University of Duisburg-Essen, Essen, Germany
| | - Arne Sahm
- Genome Analysis, Leibniz Institute for Age Research - Fritz Lipmann Institute, Jena, Germany
| | - Karol Szafranski
- Genome Analysis, Leibniz Institute for Age Research - Fritz Lipmann Institute, Jena, Germany
| | - Hynek Burda
- Department of General Zoology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | - Philip Dammann
- Department of General Zoology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany
- Central Animal Laboratory, University Hospital, University of Duisburg-Essen, Essen, Germany
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20
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Ferenz KB, Waack IN, Laudien J, Mayer C, Broecker-Preuss M, Groot HD, Kirsch M. Safety of poly (ethylene glycol)-coated perfluorodecalin-filled poly (lactide-co-glycolide) microcapsules following intravenous administration of high amounts in rats. Results Pharma Sci 2014; 4:8-18. [PMID: 25756002 PMCID: PMC4050377 DOI: 10.1016/j.rinphs.2014.04.001] [Citation(s) in RCA: 10] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 04/24/2014] [Accepted: 04/28/2014] [Indexed: 01/05/2023]
Abstract
The host response against foreign materials designates the biocompatibility of intravenously administered microcapsules and thus, widely affects their potential for subsequent clinical use as artificial oxygen/drug carriers. Therefore, body distribution and systemic parameters, as well as markers of inflammation and indicators of organ damage were carefully evaluated after administration of short-chained poly (vinyl alcohol, (PVA)) solution or poly (ethylene glycol (PEG))-shielded perfluorodecalin-filled poly (d,l-lactide-co-glycolide, PFD-filled PLGA) microcapsules into Wistar rats. Whereas PVA infusion was well tolerated, all animals survived the selected dose of 1247 mg microcapsules/kg body weight but showed marked toxicity (increased enzyme activities, rising pro-inflammatory cytokines and complement factors) and developed a mild metabolic acidosis. The observed hypotension emerging immediately after start of capsule infusion was transient and mean arterial blood pressure restored to baseline within 70 min. Microcapsules accumulated in spleen and liver (but not in other organs) and partly occluded hepatic microcirculation reducing sinusoidal perfusion rate by about 20%. Intravenous infusion of high amounts of PFD-filled PLGA microcapsules was tolerated temporarily but associated with severe side effects such as hypotension and organ damage. Short-chained PVA displays excellent biocompatibility and thus, can be utilized as emulsifier for the preparation of drug carriers designed for intravenous use.
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Key Words
- ALAT, alanine aminotransferase
- ANOVA, one-way analysis of variance
- ASAT, aspartate aminotransferase
- Artificial oxygen carriers
- BE, base excess
- Biocompatibility
- Biodegradable microcapsules
- C3, complement factor 3
- C4a, complement factor 4a
- CARPA, complement activation-related pseudoallergy
- CK, creatine kinase
- DAPI, 4',6-diamidin-2-phenylindol
- FITC-dextran, fluorescein isothiocyanate-dextran 150,000
- IFN-?, interferon-gamma
- IL, interleukin
- IVM, intravital microscopy
- LDH, lactate dehydrogenase
- MAP, mean arterial blood pressure
- PEG, poly (ethylene glycol)
- PFD, perfluorodecalin
- PLA)
- PLGA, poly (d,l-lactide-co-glycolide)
- PVA, poly (vinyl alcohol)
- Perfluorocarbon
- Poly (lactic/glycolic) acid (PLGA
- Poly (vinyl alcohol)
- TNF-a, tumor necrosis factor alpha
- pO2, pCO2, oxygen and carbon dioxide partial pressures
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Affiliation(s)
- Katja B Ferenz
- University of Duisburg-Essen, Institute for Physiological Chemistry, University Hospital Essen, Hufelandstr. 55, Essen 45122, Germany
| | - Indra N Waack
- University of Duisburg-Essen, Institute for Physiological Chemistry, University Hospital Essen, Hufelandstr. 55, Essen 45122, Germany
| | - Julia Laudien
- University of Duisburg-Essen, Institute for Physiological Chemistry, University Hospital Essen, Hufelandstr. 55, Essen 45122, Germany
| | - Christian Mayer
- University of Duisburg-Essen, Institute for Physical Chemistry, CeNIDE, Universitaetsstr. 5, Essen 45141, Germany
| | - Martina Broecker-Preuss
- Department of Endocrinology and Metabolism Illnesses, Division of Laboratory Research, University of Duisburg-Essen, University Hospital Essen, Hufelandstr. 55, Essen 45122, Germany
| | - Herbert de Groot
- University of Duisburg-Essen, Institute for Physiological Chemistry, University Hospital Essen, Hufelandstr. 55, Essen 45122, Germany
| | - Michael Kirsch
- University of Duisburg-Essen, Institute for Physiological Chemistry, University Hospital Essen, Hufelandstr. 55, Essen 45122, Germany
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21
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Kara K, Gronewold J, Neumann T, Mahabadi AA, Weimar C, Lehmann N, Berger K, Kälsch HIM, Bauer M, Broecker-Preuss M, Möhlenkamp S, Moebus S, Jöckel KH, Erbel R, Hermann DM. B-type natriuretic peptide predicts stroke of presumable cardioembolic origin in addition to coronary artery calcification. Eur J Neurol 2014; 21:914-21. [DOI: 10.1111/ene.12411] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Accepted: 02/07/2014] [Indexed: 01/17/2023]
Affiliation(s)
- K. Kara
- Department of Cardiology; University Hospital Essen; Essen Germany
| | - J. Gronewold
- Department of Neurology; University Hospital Essen; Essen Germany
| | - T. Neumann
- Department of Cardiology; University Hospital Essen; Essen Germany
| | - A. A. Mahabadi
- Department of Cardiology; University Hospital Essen; Essen Germany
| | - C. Weimar
- Department of Neurology; University Hospital Essen; Essen Germany
| | - N. Lehmann
- Institute for Medical Informatics Biometry and Epidemiology; University Duisburg-Essen; Essen Germany
| | - K. Berger
- Institute of Epidemiology and Social Medicine; University of Münster; Essen Germany
| | - H. I. M. Kälsch
- Department of Cardiology; University Hospital Essen; Essen Germany
| | - M. Bauer
- Department of Cardiology; University Hospital Essen; Essen Germany
| | - M. Broecker-Preuss
- Department of Clinical Chemistry; University Hospital Essen; Essen Germany
| | - S. Möhlenkamp
- Department of Cardiology; Hospital Bethanien Moers; Moers Germany
| | - S. Moebus
- Institute for Medical Informatics Biometry and Epidemiology; University Duisburg-Essen; Essen Germany
| | - K.-H. Jöckel
- Institute for Medical Informatics Biometry and Epidemiology; University Duisburg-Essen; Essen Germany
| | - R. Erbel
- Department of Cardiology; University Hospital Essen; Essen Germany
| | - D. M. Hermann
- Department of Neurology; University Hospital Essen; Essen Germany
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22
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Hamburger T, Broecker-Preuss M, Hartmann M, Schade FU, de Groot H, Petrat F. Effects of glycine, pyruvate, resveratrol, and nitrite on tissue injury and cytokine response in endotoxemic rats. J Surg Res 2013; 183:e7-e21. [DOI: 10.1016/j.jss.2013.01.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Revised: 12/15/2012] [Accepted: 01/11/2013] [Indexed: 12/15/2022]
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23
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Li C, Ostermann T, Hardt M, Lüdtke R, Broecker-Preuss M, Dobos G, Michalsen A. Metabolic and psychological response to 7-day fasting in obese patients with and without metabolic syndrome. ACTA ACUST UNITED AC 2013; 20:413-20. [PMID: 24434755 DOI: 10.1159/000353672] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Extended modified fasting is a frequently practiced tradition in Europe. It is claimed to improve the cardiometabolic state and physical and psychological well-being by an evolutionary co-developed adaptation response. We aimed to investigate the cardiometabolic and psychological effects of a 7-day fast and differences of these responses between patients with or without metabolic syndrome (MetS). METHODS We investigated 30 female subjects (49.0 ± 8.1 years, BMI 30.4 ± 6.7 kg/m(2)) with (n = 12) and without (n = 18) MetS. All subjects participated in a 7-day fast according to Buchinger with a nutritional energy intake of 300 kcal/day and stepwise reintroduction of solid food thereafter. Outcomes were assessed baseline and after fasting and included measures of metabolic and glucoregulatory control, adipokines as well as psychological well-being as assessed by Profile of Mood States (POMS) and Hospital Anxiety and Depression Scale (HADS). RESULTS Mean weight decreased from 85.4 ± 18.8 kg to 79.7 ± 18.2 kg accompanied by systolic/diastolic blood pressure (BP) reduction of -16.2 mm Hg (95% CI: -9.1; -23.3 mm Hg) and -6.0 mm Hg (95% CI: -1.8; -10.3 mm Hg), each p < 0.001 and p = 0.005. Fasting led to marked decreases of levels of LDL-cholesterol, leptin, and insulin and increases of levels of adiponectin, leptin receptors, and resistin. Fasting-induced mood enhancement was reflected by decreased anxiety, depression, fatigue, and improved vigor. Patients with MetS showed some greater changes in B P, LDL-cholesterol, triglycerides, adiponectin, leptin, and sleep quality. Fasting was well-tolerated. CONCLUSIONS Our results point to marked beneficial responses to 7-day modified fasting and a potential role in the prevention of the MetS. Randomized trials with longer observation periods should test the clinical effectiveness of fasting in metabolic diseases.
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Affiliation(s)
- Chenying Li
- Department of Traditional Chinese Medicine, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
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24
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Kauther MD, Neuerburg C, Wefelnberg F, Bachmann HS, Schlepper R, Hilken G, Broecker-Preuss M, Grabellus F, Schilling AF, Jäger M, Wedemeyer C. RANKL-associated suppression of particle-induced osteolysis in an aged model of Calcitonin and α-CGRP deficiency. Biomaterials 2013; 34:2911-9. [DOI: 10.1016/j.biomaterials.2013.01.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Accepted: 01/04/2013] [Indexed: 12/15/2022]
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25
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Reinhardt W, Dolff S, Broecker-Preuss M, Führer D, Kribben A, Witzke O. Hypogonadism at initiation of hemodialysis is associated with a high mortality rate in male patients with chronic kidney disease (CKD). Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336664] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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Berg C, Chittamadathil J, Petersenn S, Walensi M, Broecker-Preuss M, Bauer M, Möhlenkamp S, Roggenbuck U, Lehmann N, Sandalcioglu IE, Sure U, Jöckel KH, Erbel R, Mann K, Führer D. Cardiovascular risk in patients with hypopituitarism after surgery: comparison to matched data from the general population. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336743] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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27
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Kruse F, Rabis T, Kleibrink B, Wang Y, Langguth N, Broecker-Preuss M, Jäger A, Weinreich G, Kamler M, Teschler H, Sommerwerck U. Entzündungsparameter, Lipide und metabolische Hormone bei lungentransplantierten Patienten mit obstruktiver Schlafapnoe. Pneumologie 2013. [DOI: 10.1055/s-0033-1334787] [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: 10/27/2022]
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28
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Eisele L, Dürig J, Broecker-Preuss M, Dührsen U, Bokhof B, Erbel R, Moebus S, Jöckel KH. Prevalence and incidence of anemia in the German Heinz Nixdorf Recall Study. Ann Hematol 2013; 92:731-7. [DOI: 10.1007/s00277-013-1697-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 02/01/2013] [Indexed: 11/28/2022]
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29
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Dohle DS, Petrat F, Tsagakis K, Bestendonk C, Pilarczyk K, Broecker-Preuss M, Thielmann M, Jakob H, de Groot H. Early detection of Mesenteric Ischemia by serum markers in cardiac surgery patients. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332333] [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: 10/27/2022]
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30
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Berg C, Petersenn S, Walensi M, Möhlenkamp S, Bauer M, Lehmann N, Roggenbuck U, Moebus S, Broecker-Preuss M, Sandalcioglu I, Stolke D, Sure U, Joeckel K, Erbel R, Führer D, Mann K. Cardiac Risk in Patients with Treatment Naïve, First-Line Medically Controlled and First-Line Surgically Cured Acromegaly in Comparison to Matched Data from the General Population. Exp Clin Endocrinol Diabetes 2013; 121:125-32. [PMID: 23338744 DOI: 10.1055/s-0032-1314811] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- C. Berg
- Department of Endocrinology and Metabolism and Division of Laboratory Research, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - S. Petersenn
- Department of Endocrinology and Metabolism and Division of Laboratory Research, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - M. Walensi
- Department of Endocrinology and Metabolism and Division of Laboratory Research, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - S. Möhlenkamp
- Department of Cardiology, West-German Heart Centre Essen, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - M. Bauer
- Department of Cardiology, West-German Heart Centre Essen, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - N. Lehmann
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Germany
| | - U. Roggenbuck
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Germany
| | - S. Moebus
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Germany
| | - M. Broecker-Preuss
- Department of Endocrinology and Metabolism and Division of Laboratory Research, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - I. Sandalcioglu
- Department of Neurosurgery, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - D. Stolke
- Department of Neurosurgery, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - U. Sure
- Department of Neurosurgery, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - K. Joeckel
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Germany
| | - R. Erbel
- Department of Cardiology, West-German Heart Centre Essen, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - D. Führer
- Department of Endocrinology and Metabolism and Division of Laboratory Research, University Hospital of Essen, University of Duisburg-Essen, Germany
| | - K. Mann
- Department of Endocrinology and Metabolism and Division of Laboratory Research, University Hospital of Essen, University of Duisburg-Essen, Germany
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31
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Houschyar KS, Lüdtke R, Dobos GJ, Kalus U, Broecker-Preuss M, Rampp T, Brinkhaus B, Michalsen A. Effects of phlebotomy-induced reduction of body iron stores on metabolic syndrome: results from a randomized clinical trial. BMC Med 2012; 10:54. [PMID: 22647517 PMCID: PMC3386865 DOI: 10.1186/1741-7015-10-54] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Accepted: 05/30/2012] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Metabolic syndrome (METS) is an increasingly prevalent but poorly understood clinical condition characterized by insulin resistance, glucose intolerance, dyslipidemia, hypertension, and obesity. Increased oxidative stress catalyzed by accumulation of iron in excess of physiologic requirements has been implicated in the pathogenesis of METS, but the relationships between cause and effect remain uncertain. We tested the hypothesis that phlebotomy-induced reduction of body iron stores would alter the clinical presentation of METS, using a randomized trial. METHODS In a randomized, controlled, single-blind clinical trial, 64 patients with METS were randomly assigned to iron reduction by phlebotomy (n = 33) or to a control group (n = 31), which was offered phlebotomy at the end of the study (waiting-list design). The iron-reduction patients had 300 ml of blood removed at entry and between 250 and 500 ml removed after 4 weeks, depending on ferritin levels at study entry. Primary outcomes were change in systolic blood pressure (SBP) and insulin sensitivity as measured by Homeostatic Model Assessment (HOMA) index after 6 weeks. Secondary outcomes included HbA1c, plasma glucose, blood lipids, and heart rate (HR). RESULTS SBP decreased from 148.5 ± 12.3 mmHg to 130.5 ± 11.8 mmHg in the phlebotomy group, and from 144.7 ± 14.4 mmHg to 143.8 ± 11.9 mmHg in the control group (difference -16.6 mmHg; 95% CI -20.7 to -12.5; P < 0.001). No significant effect on HOMA index was seen. With regard to secondary outcomes, blood glucose, HbA1c, low-density lipoprotein/high-density lipoprotein ratio, and HR were significantly decreased by phlebotomy. Changes in BP and HOMA index correlated with ferritin reduction. CONCLUSIONS In patients with METS, phlebotomy, with consecutive reduction of body iron stores, lowered BP and resulted in improvements in markers of cardiovascular risk and glycemic control. Blood donation may have beneficial effects for blood donors with METS. TRIAL REGISTRATION ClinicalTrials.gov: NCT01328210 Please see related article: http://www.biomedcentral.com/1741-7015/10/53.
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Affiliation(s)
- Khosrow S Houschyar
- Department of Internal Medicine, Kliniken Essen-Mitte, University Duisburg-Essen, Essen, Germany
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32
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Deutschbein T, Broecker-Preuss M, Flitsch J, Jaeger A, Althoff R, Walz MK, Mann K, Petersenn S. Salivary cortisol as a diagnostic tool for Cushing's syndrome and adrenal insufficiency: improved screening by an automatic immunoassay. Eur J Endocrinol 2012; 166:613-8. [PMID: 22214924 DOI: 10.1530/eje-11-0945] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [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: 11/08/2022]
Abstract
BACKGROUND Salivary cortisol is increasingly used to assess patients with suspected hypo- and hypercortisolism. This study established disease-specific reference ranges for an automated electrochemiluminescence immunoassay (ECLIA). METHODS Unstimulated saliva from 62 patients with hypothalamic-pituitary disease was collected at 0800 h. A peak serum cortisol level below 500 nmol/l during the insulin tolerance test (ITT) was used to identify hypocortisolism. Receiver-operating characteristic (ROC) analysis allowed establishment of lower and upper cutoffs with at least 95% specificity for adrenal insufficiency and adrenal sufficiency. Saliva from 40 patients with confirmed hypercortisolism, 45 patients with various adrenal masses, and 115 healthy subjects was sampled at 2300 h and after low-dose dexamethasone suppression at 0800 h . ROC analysis was used to calculate thresholds with at least 95% sensitivity for hypercortisolism. Salivary cortisol was measured with an automated ECLIA. RESULTS When screening for secondary adrenal insufficiency, a lower cutoff of 3.2 nmol/l and an upper cutoff of 13.2 nmol/l for unstimulated salivary cortisol allowed a highly specific diagnosis (i.e. similar to the ITT result) in 26% of patients. For identification of hypercortisolism, cutoffs of 6.1 nmol/l (sensitivity 95%, specificity 91%, area under the curve (AUC) 0.97) and 2.0 nmol/l (sensitivity 97%, specificity 86%, AUC 0.97) were established for salivary cortisol at 2300 h and for dexamethasone-suppressed salivary cortisol at 0800 h. CONCLUSIONS The newly established thresholds facilitated initial screening for secondary adrenal insufficiency and allowed excellent identification of hypercortisolism. Measurement by an automated immunoassay will allow broader use of salivary cortisol as a diagnostic tool.
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Affiliation(s)
- Timo Deutschbein
- Department of Endocrinology and Division of Laboratory Research, Medical Center, University Hospital of Essen, University of Duisburg-Essen, Hufelandstrasse 55, Essen, Germany
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33
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Müller S, Nagarajah J, Lahner H, Broecker-Preuss M, Bockisch A, Görges R, Hartung-Knemeyer V. Assay-Abhängigkeit der Calcitonin- Zielbereiche für „biochemisch geheilte“ Patienten mit medullärem Schilddrüsenkarzinom. Nuklearmedizin 2012; 51:125-32. [DOI: 10.3413/nukmed-0454-11-12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Accepted: 03/30/2012] [Indexed: 11/20/2022]
Abstract
SummaryAim: Calcitonin (hCT) is an important diagnostic parameter in medullary thyroid carcinoma (MTC). We determined the variability of the reference ranges of several currently available immunometric assays for „biochemically cured“ MTC patients. Patients, methods: We compared six assays [Nichols ICMA, Biomerica IEMA, Immulite 2000 (Siemens), Calcitonin-IRMA magnum (Medipan), SELco-IRMA (Medipan) and Calcitonin IRMA (Medgenix)] in subgroups of 198 patients with differentiated thyroid cancer (DTC) after total thyroidectomy as a model for curatively treated MTC patients. In addition, hCT was measured after pentagastrin stimulation in 13 DTC patients and 13 patients with MTC. Results: The basal hCT concentrations were below the detection limit of the respective assay in 100% of all thyroidectomized DTC patients for Nichols ICMA (n = 138) and Immulite 2000 (n = 60), in 97% for Biomerica IEMA (n = 57), and in 85% for IRMA magnum (n = 20). However, basal hCT was mostly within the reference range in Selco-IRMA (n = 20) and Medgenix IRMA (n = 76). In all DTC patients and 9/13 MTC patients the pentagastrin stimulated hCT was below the detection limit for the Nichols ICMA and Immulite 2000, all four MTC patients with elevated stimulated hCT developed a recurrence during follow-up. Conclusions: For assays with high monomer specificity (Nichols ICMA, Biomerica IEMA, Immulite 2000, to a lesser degree IRMA magnum) biochemical cure is defined by basal and stimulated calcitonin levels below the detection limit. For assays with low monomer specificity (SELco-IRMA, IRMA Medgenix) calcitonin levels in the reference range of patients without thyroid diseases are consistent with “biochemical cure”.
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34
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Deutschbein T, Broecker-Preuss M, Hartmann MF, Althoff R, Wudy SA, Mann K, Petersenn S. Measurement of urinary free cortisol by current immunoassays: need for sex-dependent reference ranges to define hypercortisolism. Horm Metab Res 2011; 43:714-9. [PMID: 21932176 DOI: 10.1055/s-0031-1286297] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [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: 10/17/2022]
Abstract
Urinary free cortisol (UFC) is used to assess disease activity in hypercortisolemic patients. However, reference ranges are often lacking, especially with respect to potential confounding variables. This study analyzed upper limits of normal (ULN, mean + 2 SD) for 2 newer immunoassays, using gas chromatography-mass spectrometry (GC-MS) as reference method. Each 10 healthy subjects were grouped by age (18-29; 30-49; ≥ 50 years), BMI (< 25; ≥ 25 kg/m2), and sex, resulting in a total of 120 controls (60 males; age: 39.3±1.3 years; BMI: 25.9±0.4 kg/m2). ULN were calculated for a radioimmunoassay (RIA, Immunotech) and an electrochemiluminescence immunoassay (ECLIA, Roche) and applied to 12 hypercortisolemic patients (4 males; age: 53.1±3.1 years; BMI: 29.1±1.8 kg/m2). To determine degradation, samples were stored at 4°C (without light) or 22°C (with and without light) for 0, 24, and 72 h. Cortisol concentrations were significantly correlated: r=0.88 for RIA vs. ECLIA, r=0.75 for RIA vs. GC-MS, and r=0.77 for ECLIA vs. GC-MS (always p<0.0001). For each procedure, multiple stepwise regression analysis identified sex as the only significant predictor, resulting in sex-dependent ULN (males vs. females): 294 vs. 208 nmol/24 h (RIA), and 379 vs. 277 nmol/24 h (ECLIA). These ULN classified samples from patients as hypercortisolemic in 100% (RIA) and 95% (ECLIA). Different storage conditions over 72 h did not alter UFC levels significantly. Results of the 3 procedures were well correlated, and the use of assay- and sex-specific ULN allowed excellent identification of hypercortisolic states. UFC is stable over 72 h irrespective of the storage conditions applied.
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Affiliation(s)
- T Deutschbein
- Department of Endocrinology and Division of Laboratory Research, University of Duisburg-Essen, Essen, Germany
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35
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Kauther MD, Bachmann HS, Neuerburg L, Broecker-Preuss M, Hilken G, Grabellus F, Koehler G, von Knoch M, Wedemeyer C. Calcitonin substitution in calcitonin deficiency reduces particle-induced osteolysis. BMC Musculoskelet Disord 2011; 12:186. [PMID: 21843355 PMCID: PMC3171722 DOI: 10.1186/1471-2474-12-186] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Accepted: 08/15/2011] [Indexed: 08/30/2023] Open
Abstract
Background Periprosthetic osteolysis is a major cause of aseptic loosening in joint arthroplasty. This study investigates the impact of CT (calcitonin) deficiency and CT substitution under in-vivo circumstances on particle-induced osteolysis in Calca -/- mice. Methods We used the murine calvarial osteolysis model based on ultra-high molecular weight polyethylene (UHMWPE) particles in 10 C57BL/6J wild-type (WT) mice and twenty Calca -/- mice. The mice were divided into six groups: WT without UHMWPE particles (Group 1), WT with UHMWPE particles (Group 2), Calca -/- mice without UHMWPE particles (Group 3), Calca -/- mice with UHMWPE particles (Group 4), Calca -/- mice without UHMWPE particles and calcitonin substitution (Group 5), and Calca -/- mice with UHMWPE particle implantation and calcitonin substitution (Group 6). Analytes were extracted from serum and urine. Bone resorption was measured by bone histomorphometry. The number of osteoclasts was determined by counting the tartrate-resistant acid phosphatase (TRACP) + cells. Results Bone resorption was significantly increased in Calca -/- mice compared with their corresponding WT. The eroded surface in Calca -/- mice with particle implantation was reduced by 20.6% after CT substitution. Osteoclast numbers were significantly increased in Calca -/- mice after particle implantation. Serum OPG (osteoprotegerin) increased significantly after CT substitution. Conclusions As anticipated, Calca -/- mice show extensive osteolysis compared with wild-type mice, and CT substitution reduces particle-induced osteolysis.
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Affiliation(s)
- Max D Kauther
- Department of Trauma Surgery, University Duisburg-Essen, Hufelandstr. 55, 45147 Essen, Germany.
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Abstract
Abstract Thyroid hormone (TH) is essential for normal development, growth and metabolism. Its effects were thought to be principally mediated through triiodothyronine (T3), acting as a ligand for the nuclear TH receptors (TRs) α and β residing on thyroid hormone response elements (TREs) in the promoter of TH target genes. In this classical model of TH action, T3 binding to TRs leads to recruitment of basal transcription factors and increased transcription of TH responsive genes. Recently, the concept of TH action on gene expression has become more diverse and now includes nonclassical actions of T3 and T4: T3 has been shown to activate PI3K via the TRs, which ultimately increases transcription of certain genes, e.g. HIF-1α. Additionally, both T3 and thyroxine (T4) can bind to a membrane integrin, αvβ3, which leads to activation of the PI3K and MAPK signal transduction pathways and finally also increases gene transcription, e.g. of the FGF2 gene. Therefore, these initially nongenomic, nonclassical actions seem to serve as additional interfaces for transcriptional regulation by TH. Aim of this perspective is to summarize the genes that are currently known to be induced by nonclassical TH action and the mechanisms involved.
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Affiliation(s)
- Lars C Moeller
- Department of Endocrinology and Division of Laboratory Research, University of Duisburg-Essen, Hufelandstr, 55, 45147 Essen, Germany.
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Kauther MD, Zimmermann C, Bachmann H, Broecker-Preuss M, Hilken G, von Knoch M, Wedemeyer C. Biochemical markers of particle induced osteolysis in C57BL/6 mice. Clin Chem Lab Med 2010; 48:1641-6. [PMID: 20704528 DOI: 10.1515/cclm.2010.305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Micro-structural changes associated with ultra high molecular weight polyethylene particle (UHMWPE) induced osteolysis, the most frequent cause of aseptic loosening, have been intensively investigated in the mammalian calvarian model by histomorphometry and micro-computed tomography. However, little is known regarding the serological changes that occur during this process. METHODS Serological parameters for bone metabolism [calcium, phosphate, osteocalcin (OCN), deoxypyridinoline (DPD)/creatinine, alkaline phosphatase, osteoprotegerin and receptor activator of nuclear factor-κB] were analyzed in this animal model for particle induced osteolysis. Ten C57BL/6 mice were divided at random into sham operated and UHM-WPE implanted groups. Blood and urine samples were collected prior to and at 14 days after surgery. RESULTS Implantation of UHMWPE lead to a significant decrease in bone volume (p=0.027). Both groups (sham/UHMWPE) showed a significant increase in calcium (p=0.004/p=0.027) and phosphate (p=0.001/p=0.001), without correlation to particle implantation. Significantly higher concentrations of DPD/creatinine (p=0.034) and OCN (p=0.022) were found after implantation of UHM-WPE. In addition, parameters could not be correlated to particle induced osteolysis. CONCLUSIONS DPD can be regarded as a valuable parameter for detecting UHMWPE induced osteolysis in the calvarian model. Further studies of serum parameters should focus on the clinical relevance in aseptic prosthetic loosening.
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Affiliation(s)
- Max D Kauther
- Department of Trauma Surgery, University of Duisburg-Essen, Essen, Germany.
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Deutschbein T, Unger N, Jaeger A, Broecker-Preuss M, Mann K, Petersenn S. Influence of various confounding variables and storage conditions on metanephrine and normetanephrine levels in plasma. Clin Endocrinol (Oxf) 2010; 73:153-60. [PMID: 20039892 DOI: 10.1111/j.1365-2265.2009.03761.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [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: 01/03/2023]
Abstract
OBJECTIVE Measurements of plasma free metanephrines have been advocated as first-line tests for phaeochromocytoma. The aim of the study was to assess the impact of potential confounding variables. DESIGN Comparative study between 2008 and 2009. SUBJECTS Hundred and eighty healthy subjects. MEASUREMENTS The effects of age, BMI, gender, menstrual cycle (sampling every 2 days), time of day (sampling every 2 h), venepunture (0, 15, 30, 60, 90 and 120 min), physical exercise (0, 15 and 30 min), coffee (0 and 60 min), breakfast (0 and 60 min) and various body positions (standing and supine rest, each 0 and 120 min) were evaluated. In addition, whole blood and plasma samples were stored at 4 degrees C or at 22 degrees C for 0, 1, 3, 24 and 72 h. Plasma free metanephrines were measured using radioimmunoassay (LDN). RESULTS While metanephrine was significantly influenced by sex and age, BMI and sex were significant predictors of normetanephrine. Coffee (+20%) and food (+8%) elevated normetanephrine significantly (P < 0.05), while metanephrine remained stable. Physical exercise increased metanephrine (+82%) as well as normetanephrine (+84%) significantly (P < 0.005). Supine rest significantly decreased both metanephrine (-34%) and normetanephrine (-19%) when compared to standing rest (P < 0.01). Metanephrine and normetanephrine were not significantly influenced by time of day, menstrual cycle or venepuncture. When plasma samples were stored at 4 degrees C, metanephrine and normetanephrine were stable for 72 h. CONCLUSIONS Physical exercise may lead to relevant changes in metanephrine and normetanephrine and should therefore be avoided prior to sampling. Although effects of age, sex and BMI were small, these variables should be considered when interpreting biochemical results. Blood should be taken in the supine position, and samples should be immediately centrifuged and stored at 4 degrees C to improve stability.
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Affiliation(s)
- Timo Deutschbein
- Department of Endocrinology and Division of Laboratory Research, University of Duisburg-Essen, Essen, Germany
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Mö;hlenkamp S, Lehmann N, Moebus S, Schmermund A, Dragano N, Bauer M, Kälsch H, Kälsch H, Hoffmann B, Stang A, Broecker-Preuss M, Mann K, Siegrist J, Jö;ckel KH, Erbel R. MEASURING CORONARY ARTERY CALCIFICATION IN COMBINATION WITH HIGH-SENSITIVE C-REACTIVE PROTEIN PREDICTS HARD CORONARY EVENTS BEYOND FRAMINGHAM RISK SCORE CATEGORIES - DATA FROM THE HEINZ NIXDORF RECALL STUDY. J Am Coll Cardiol 2010. [DOI: 10.1016/s0735-1097(10)60657-2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Schott M, Hermsen D, Broecker-Preuss M, Casati M, Mas JC, Eckstein A, Gassner D, Golla R, Graeber C, van Helden J, Inomata K, Jarausch J, Kratzsch J, Miyazaki N, Moreno MAN, Murakami T, Roth HJ, Stock W, Noh JY, Scherbaum WA, Mann K. Clinical value of the first automated TSH receptor autoantibody assay for the diagnosis of Graves' disease (GD): an international multicentre trial. Clin Endocrinol (Oxf) 2009; 71:566-73. [PMID: 19170704 DOI: 10.1111/j.1365-2265.2008.03512.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [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: 11/30/2022]
Abstract
BACKGROUND Most recently, a new rapid and fully automated electrochemiluminescence immunoassay for the determination of TSH receptor autoantibodies (TRAb) based on the ability of TRAb to inhibit the binding of a human thyroid-stimulating monoclonal antibody (M22) has been established. OBJECTIVE To evaluate this assay system in clinical routine based on an international multicentre trial and to compare the results with other established TRAb assays. PATIENTS AND MEASUREMENTS Totally 508 Graves' disease (GD), 142 autoimmune thyroiditis, 107 subacute thyroiditis, 109 nonautoimmune nodular goitre, 23 thyroid cancer patients and 446 normal controls were retrospectively evaluated. RESULTS ROC plot analysis revealed an area under curve of 0.99 (95% CI: 0.99-1.0) indicating a high assay sensitivity and specificity. The highest sensitivity (99%) and specificity (99%) was seen at a cut-off level of 1.75 IU/l. Here, the calculated positive predictive value was 95%, whereas the negative predictive value was 100%. Applying the ROC plot-derived cut-off of 1.75 IU/l we found a sensitivity for TRAb positivity within the group of newly diagnosed GD patients of 97% which is in accordance to the sum of different nonautomated porcine TSH receptor-based assays with a sensitivity of 94% indicating an excellent analytical performance of the new assay format. Detailed comparison of the automated and the sum of manual assays revealed a near identical specificity. CONCLUSION Our results demonstrate that this new assay system has a high sensitivity for detecting GD and specificity for discriminating from other thyroid diseases. This assay may represent the future technology for rapid fully automated TRAb detection.
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Affiliation(s)
- Matthias Schott
- Department of Endocrinology, Diabetes and Rheumatology, University Hospital Duesseldorf, Moorenstrasse 5, Duesseldorf, Germany.
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Berg C, Oeffner A, Schumm-Draeger PM, Badorrek F, Brabant G, Gerbert B, Bornstein S, Zimmermann A, Weber M, Broecker-Preuss M, Mann K, Herrmann BL. Prevalence of anterior pituitary dysfunction in patients following traumatic brain injury in a German multi-centre screening program. Exp Clin Endocrinol Diabetes 2009; 118:139-44. [PMID: 19691014 DOI: 10.1055/s-0029-1225611] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
INTRODUCTION We determined the prevalence of anterior pituitary dysfunction in a multi-centre screening program across five German endocrine centres in patients rehabilitating from TBI (GCS<13). PATIENTS & METHODS 246 patients (39+/-14 yrs; 133 males, 12+/-8 months after TBI) underwent a series of baseline endocrine tests with central assessment of TSH, free T4, prolactin, LH, FSH, testosterone (m), estradiol (f), cortisol, GH, and IGF-I. If IGF-I was <-2 SDS dynamic testing was performed. GHD was defined according to BMI-dependent cut-off values for GH response to GHRH+arginine of <4.2, <8.0 and <11.5 ng/ml in obese, overweight and lean subjects, respectively, or <3 micro g/l in ITT. Hypocortisolism was suggested when basal cortisol was <200 nmol/l and confirmed by ITT (peak<500 nmol/l). RESULTS In TBI patients some degree of impaired pituitary function was shown in 21% (n=52/246). Total, multiple and isolated deficits were present in 1%, 2% and 18%, respectively. 19% had an IGF-I of <-1 SDS, 9% of <-2 SDS. In 5% GHD was confirmed. 9% had hypogonadism. 4% had hypocortisolism and 1% of patients had confirmed ACTH-deficiency. 12% had TSH-deficiency. SUMMARY In summary, in this large series carried out on an unselected group of TBI survivors we have found hypopituitarism in every fifth patient with predominantly secondary hypogonadism and hypothyreosis. Regarding somatotrope insufficiency IGF-I is decreased in 50% of GHD patients. CONCLUSION These findings strongly suggest that patients who suffer head trauma should routinely undergo endocrine evaluation.
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Affiliation(s)
- C Berg
- Clinic of Endocrinology, University Hospital of Essen, Germany.
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Ehrlich S, Burghardt R, Schneider N, Broecker-Preuss M, Weiss D, Merle JV, Craciun EM, Pfeiffer E, Mann K, Lehmkuhl U, Hebebrand J. The role of leptin and cortisol in hyperactivity in patients with acute and weight-recovered anorexia nervosa. Prog Neuropsychopharmacol Biol Psychiatry 2009; 33:658-62. [PMID: 19296912 DOI: 10.1016/j.pnpbp.2009.03.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2008] [Revised: 02/16/2009] [Accepted: 03/09/2009] [Indexed: 11/25/2022]
Abstract
INTRODUCTION In food-restricted rats, leptin as well as corticotropin releasing factor attenuate semistarvation-induced hyperactivity (SIH). Results from studies in patients with anorexia nervosa (AN) showed an association between excessive physical activity (PA) and leptin. One recent report suggests a role for cortisol in PA. In this study, we assessed the relationships between PA and both, cortisol and leptin levels at the same time in patients with acute anorexia nervosa (acAN) in comparison to recovered patients (recAN). METHODS Plasma leptin, plasma cortisol, body mass index (BMI), and expert-ratings of qualities of PA were assessed in 36 acAN patients, 27 recAN patients and 44 healthy control woman (HCW). Regression analyses were used to predict PA using BMI, leptin and cortisol levels as predictor variables. RESULTS Leptin levels but not cortisol significantly contributed to the prediction of PA in acAN. In recAN PA was not elevated and not related to endocrine parameters but correlated positively with core eating disorder symptoms. CONCLUSIONS Our work lends support to the proposed inverse association between peripheral leptin levels and excessive physical activity in AN. This relationship is specific to the state of semistarvation. The role of additional mediators remains to be clarified.
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Affiliation(s)
- Stefan Ehrlich
- Charité - Universitätsmedizin Berlin, Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, CVK, Augustenburger Platz 1, 13353 Berlin, Germany.
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Frey UH, Adamzik M, Kottenberg-Assenmacher E, Jakob H, Manthey I, Broecker-Preuss M, Bergmann L, Heusch G, Siffert W, Peters J, Leineweber K. A novel functional haplotype in the human GNAS gene alters Gαs expression, responsiveness to β-adrenoceptor stimulation, and peri-operative cardiac performance. Eur Heart J 2009; 30:1402-1410. [DOI: 10.1093/eurheartj/ehn572] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Moebus S, Stang A, Möhlenkamp S, Dragano N, Schmermund A, Slomiany U, Hoffmann B, Bauer M, Broecker-Preuss M, Mann K, Siegrist J, Erbel R, Jöckel KH. Association of impaired fasting glucose and coronary artery calcification as a marker of subclinical atherosclerosis in a population-based cohort--results of the Heinz Nixdorf Recall Study. Diabetologia 2009; 52:81-9. [PMID: 18979083 DOI: 10.1007/s00125-008-1173-y] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [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] [Received: 07/31/2008] [Accepted: 09/09/2008] [Indexed: 01/27/2023]
Abstract
AIMS/HYPOTHESIS Atherosclerosis and cardiovascular diseases are often present at the time of diagnosis of type 2 diabetes mellitus. Whether subclinical atherosclerosis can be detected in the pre-diabetic (borderline fasting hyperglycemia) state is not clear. This study investigated the association of impaired fasting glucose (IFG) and coronary artery calcification (CAC), a marker of subclinical atherosclerosis, among participants without a history of coronary heart disease or manifest diabetes mellitus. METHODS Study participants (aged 45-75 years) of the population-based Heinz Nixdorf Recall Study were categorised into those with normal fasting glucose (glucose <6.1 mmol/l) and those with IFG (glucose >or=6.1 to <7.0 mmol/l), excluding participants with a history of CHD or diabetes mellitus. CAC was assessed by electron-beam computed tomography, and risk factors were assessed by extended interviews, anthropometric measurements and laboratory tests. Various CAC cut-off points were used in multiple logistic and ordinal logistic regression models to estimate ORs and 95% CIs. RESULTS Of the 2,184 participants, more men had IFG than did women (37% vs 22%). Participants with IFG showed a higher prevalence of CAC > 0 (men OR 1.90, 95% CI 1.33-2.70; women 1.63, 1.23-2.15). Risk factor adjustment weakened this association in both sexes (men 1.63, 1.12-1.36; women 1.26, 0.93-1.70). When the age- and sex-specific 75th percentile was used as the cut-off point for CAC, the association further decreased in men (1.10, 0.81-1.50), but became stronger in women (1.41, 1.02-1.94). CONCLUSIONS/INTERPRETATION These data support the hypothesis that CAC is already present in the pre-diabetic state and that IFG has a modest and independent impact on the atherosclerotic process. Biological sex appears to modify the association between IFG and CAC.
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Affiliation(s)
- S Moebus
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Essen, Germany.
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Hermsen D, Broecker-Preuss M, Casati M, Mas JC, Eckstein A, Gassner D, van Helden J, Inomata K, Jarausch J, Kratzsch J, Mann K, Miyazaki N, Navarro Moreno MA, Murakami T, Roth HJ, Noh JY, Scherbaum WA, Schott M. Technical evaluation of the first fully automated assay for the detection of TSH receptor autoantibodies. Clin Chim Acta 2008; 401:84-9. [PMID: 19091299 DOI: 10.1016/j.cca.2008.11.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2008] [Revised: 11/18/2008] [Accepted: 11/18/2008] [Indexed: 11/19/2022]
Abstract
BACKGROUND Graves' disease (GD) is mediated by autoantibodies which bind to the TSH receptor (TRAb). The aim of the present study was to evaluate the technical performance of the first fully automated immunoassay for TRAb detection. METHODS The Elecsys Anti-TSHR immunoassay utilizes a porcine TSH receptor (TSHR) and the human thyroid stimulating monoclonal TSHR autoantibody M22. RESULTS Intraassay and total imprecision CV were determined between 1.4%-14.9%, and 2.4%-28.8%, respectively. Using the 20% CV criteria the functional sensitivity was found at 0.73 IU/L. The median CV at the cut-off (1.75 IU/L) was found to be 11%. Comparison studies with five TRAb immunoassays yielded slopes and intercepts between 1.02-1.48, and -0.74-0.56, respectively. Correlation coefficients were determined between 0.895 and 0.978. ROC plot analysis of patients with GD, patients with other thyroid disorders and healthy controls revealed an AUC of 0.99 resulting in a sensitivity of 97% and a specificity of 99% at a TRAb level of 1.75 IU/L. CONCLUSION The evaluation of the TRAb immunoassay generated homogeneous performance data and demonstrated a high degree of comparability to established TRAb assays. The automated TRAb assay represents a major improvement of thyroid testing in clinical practice.
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Affiliation(s)
- Derik Hermsen
- Central Institute for Clinical Chemistry and Laboratory Medicine, University Hospital Duesseldorf, Germany.
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Icks A, Kruse J, Dragano N, Broecker-Preuss M, Slomiany U, Mann K, Jöckel KH, Erbel R, Giani G, Moebus S. Are symptoms of depression more common in diabetes? Results from the Heinz Nixdorf Recall study. Diabet Med 2008; 25:1330-6. [PMID: 19046224 DOI: 10.1111/j.1464-5491.2008.02585.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [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: 12/01/2022]
Abstract
AIMS To estimate the association between depressive symptoms and Type 2 diabetes, as well as previously undetected diabetes, in a large population-based sample in Germany and to determine associated variables. METHODS We used baseline data on 4595 participants (age 45-75 years, 50.2% women) from the German Heinz Nixdorf Recall study, a population-based, prospective cohort study which started in 2000. Diabetes mellitus was assessed by self report (physician diagnosis or medication), undiagnosed diabetes based on blood glucose levels. Depressive symptoms were assessed using the Center for Epidemiologic Studies Depression (CES-D) scale short form (cut-off >or= 15 points). We fitted multiple logistic regression models. RESULTS The prevalence of diagnosed and previously undetected diabetes was 9.3% (95% confidence interval 8.2-11.6) and 7.6% (6.6-8.8) in men and 6.0% (5.1-7.1) and 3.2% (2.5-4.0) in women, respectively. Compared with non-diabetic women, the prevalence of depressive symptoms was not significantly different in diabetic women (age-adjusted odds ratio, 95% confidence interval 1.48; 0.98-2.24) and women with undiagnosed diabetes (0.67; 0.33-1.36). In men, the prevalence of depressive symptoms tended to be lower in diabetic than in non-diabetic subjects (0.62; 0.35-1.09), but the depressive symptoms were significantly less frequent in men with undiagnosed diabetes (0.30; 0.13-0.70). The pattern remained after further adjustment. Significant associations with depressive symptoms were found for co-morbidities and living without a partner in both women and in men, and for body mass index and activity level in women only. CONCLUSIONS After adjustment for relevant covariates, the association between depressive symptoms and Type 2 diabetes was heterogenous in our population-based study. In subjects with undiagnosed diabetes, however, depressive symptoms were less frequent in men. Co-morbidities and psychosocial conditions are strongly associated with depressive symptoms.
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Affiliation(s)
- A Icks
- Institute of Biometrics and Epidemiology, German Diabetes Research Centre, Düsseldorf, Germany.
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Broecker-Preuss M, Sheu SY, Worm K, Feldkamp J, Witte J, Scherbaum WA, Mann K, Schmid KW, Schott M. Expression and mutation analysis of the tyrosine kinase c-kit in poorly differentiated and anaplastic thyroid carcinoma. Horm Metab Res 2008; 40:685-91. [PMID: 18622894 DOI: 10.1055/s-2008-1080895] [Citation(s) in RCA: 8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Poorly differentiated and anaplastic thyroid carcinoma are aggressive tumors failing to res-pond to conventional therapy. Imatinib mesylate offers an effective therapeutic option in patients with various types of malignancies by inhibiting tyrosine kinases such as c-kit. In this study we investigated c-kit expression in anaplastic and poorly differentiated thyroid carcinoma compared to differentiated carcinoma and adenoma and the presence of c-kit mutations. In total, 224 thyroid tissues were analyzed by immunohistochemistry. Mutation analysis of exon 9, 11, 13, and 17 of the c-kit gene was performed in anaplastic and poorly differentiated carcinoma. c-Kit expression was negative in all anaplastic thyroid carcinoma, while c-kit expression of poorly differentiated carcinoma showed a high variability with a more intense staining in tumors showing obvious differentiated malignant follicular tumor areas. Differentiated carcinoma showed a slight, but not significantly stronger c-kit expression than poorly differentiated carcinoma. All tumors revealed wild type sequences of c-kit gene in exons 9, 11, 13, and 17. The low or lacking c-kit expression in undifferentiated thyroid carcinoma together with the lack of mutations argue against a crucial role of c-kit in thyroid carcinoma cell proliferation. Further molecular targets of imatinib mesylate have to be analyzed to estimate a potential benefit of this drug for patients with dedifferentiated thyroid carcinoma.
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Affiliation(s)
- M Broecker-Preuss
- Department of Endocrinology, Division of Clinical Chemistry and Laboratory Medicine, University Hospital Essen, Hufelandstrasse 55, Essen, Germany.
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Nassenstein K, Breuckmann F, Lehmann N, Schmermund A, Hunold P, Broecker-Preuss M, Sandner TA, Halle M, Mann K, Jöckel KH, Heusch G, Budde T, Erbel R, Barkhausen J, Möhlenkamp S. Left ventricular volumes and mass in marathon runners and their association with cardiovascular risk factors. Int J Cardiovasc Imaging 2008; 25:71-9. [PMID: 18677576 DOI: 10.1007/s10554-008-9337-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2008] [Accepted: 06/27/2008] [Indexed: 10/21/2022]
Abstract
BACKGROUND To assess left ventricular volumes and mass by cardiac magnetic resonance imaging in relation to conventional cardiovascular risk factors and coronary atherosclerotic plaque burden in master marathon runners aged > or =50 years. METHODS Cardiac MRI was performed in 105 clinically healthy male marathon runners (mean age 57.3 +/- 5.7 years, range 50-71 years) on a 1.5 T MR system (Avanto, Siemens, Germany). Cine steady state free precession images in standard long and short axes views were acquired to assess left ventricular volumes and mass. Cardiovascular risk factors (blood pressure, HDL/LDL cholesterol, smoking, body mass index) were assessed and coronary artery calcification (CAC) was quantified by electron beam computed tomography. RESULTS Left ventricular muscle mass (mean LVMM = 140 +/- 27 g; 73 +/- 13 g/m(2)) increased with increasing left ventricular end-diastolic volume (mean LVEDV = 137 +/- 32 ml; 72 +/- 15 ml/m(2)) (r = 0.41, P < 0.0001) and with systolic (r = 0.33, P = 0.005) and diastolic (r = 0.28, P = 0.005) blood pressures. Left ventricular EDV increased up to the age of 55 years, but decreased thereafter. Runners with LVMM > or =150 g had significantly higher CAC scores than runners with LVMM <150 g (median CAC score 110 vs. 25, P = 0.04). CONCLUSIONS Increases in LVMM and LVEDV may not only represent a response to exercise but are dependent on age and blood pressure, also. In addition, a left ventricular hypertrophy without an increase in volume may be an indicator for early subclinical cardiac alterations in response to risk factor exposure.
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Affiliation(s)
- Kai Nassenstein
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Duisburg-Essen, Essen, Germany
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Hahn S, Backhaus M, Broecker-Preuss M, Tan S, Dietz T, Kimmig R, Schmidt M, Mann K, Janssen OE. Retinol-binding protein 4 levels are elevated in polycystic ovary syndrome women with obesity and impaired glucose metabolism. Eur J Endocrinol 2007; 157:201-7. [PMID: 17656599 DOI: 10.1530/eje-07-0143] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [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: 02/01/2023]
Abstract
OBJECTIVE Insulin resistance and obesity are common features of the polycystic ovary syndrome (PCOS). Retinol-binding protein 4 (RBP4), a new fat-derived adipokine, has been described to be elevated in obesity and type 2 diabetes. The aim of the present study was to investigate whether serum RBP4 levels are correlated with metabolic parameters, indices of insulin resistance, and endocrine variables in German PCOS women. DESIGN We assessed the correlation between metabolic and endocrine parameters with RBP4 levels in 200 PCOS patients and 64 healthy controls. METHODS Serum RBP4 was measured by enzyme-linked immunosorbent assay (Immundiagnostik AG, Bensheim, Germany). In addition, anthropometric variables, clinical signs of hyperandrogenism, and body fat were evaluated, and a glucose tolerance test was performed to assess parameters of insulin resistance and glucose metabolism. RESULTS Taking the entire PCOS cohort, RBP4 levels were positively correlated with body mass index (BMI), body fat, waist circumference, fasting glucose, and area under the curve for glucose (all P<0.05), but not with indices of insulin resistance. On the other hand, PCOS women with impaired glucose metabolism had higher RBP4 levels than PCOS women with normal glucose metabolism (median 30.6, range 23.3-73.9 versus median 26.3, range 6.4-61.4, P<0.05). Furthermore, no differences were found in RBP4 levels between lean PCOS women and BMI-matched healthy controls. CONCLUSION In German PCOS women, serum RBP4 levels are associated with obesity and parameters of glucose metabolism but not with PCOS per se.
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Affiliation(s)
- Susanne Hahn
- Endokrinologikum Ruhr, Center for Endocrine and Metabolic Diseases, Alter Markt 4, 44866 Bochum, Germany.
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Redmann A, Gall S, Plettendorf K, Mann K, Broecker-Preuss M. Efficacy of various chemotherapeutic agents in dedifferentiated and anaplastic thyroid carcinoma cell lines. Exp Clin Endocrinol Diabetes 2007. [DOI: 10.1055/s-2007-972428] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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