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Rimbach H, Linxweiler M, Körner S, Smola S, Linxweiler B, Speicher S, Helfrich J, Solomayer EF, Wagner M, Schick B, Kühn JP. Prediction of lymph node status in patients with surgically treated head and neck squamous cell carcinoma via neck lavage cytology: A pilot study. Cancer Cytopathol 2024; 132:285-296. [PMID: 38329321 DOI: 10.1002/cncy.22800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 12/09/2023] [Accepted: 12/11/2023] [Indexed: 02/09/2024]
Abstract
BACKGROUND Neck dissection is a standardized surgical procedure for patients with head and neck squamous cell carcinoma (HNSCC) and plays a critical role in the choice of adjuvant treatment based on histopathological findings. Saline irrigation is routinely performed at the end of surgery. However, this irrigant is not used for diagnostic purposes. METHODS Intraoperative irrigation of the neck dissection wound was performed in 56 patients with HNSCC (N = 93 neck dissections), and the cytological suspension obtained was processed via the liquid-based cytology (LBC) technique, Papanicolaou staining, and immunocytochemical staining. Microscopic preparations were screened for the presence of tumor cells and classified as positive, borderline, or negative. These results were correlated with the histopathological and clinical data. RESULTS Neck lavage LBC demonstrated high diagnostic value in detecting lymph node metastases (N+) with extracapsular spread (ECS), with a specificity, sensitivity, negative predictive value, and positive predictive value of 93.1%, 100%, 100%, and 80%, respectively. Tumor cells were detected in 4.8% of N- cases, 20% of N+ cases without ECS, and 100% of N+ cases with ECS. Receiver operating characteristic curve analysis showed an area under the curve of 0.8429 for the prediction of N+ (p < .0001) and 0.9658 for the prediction of N+ with ECS (p < .0001). CONCLUSIONS Differential lavage cytology can provide valid and rapid information on the lymph node status in patients with HNSCC and showed an excellent correlation with histopathology. Thus, neck lavage LBC may facilitate faster and more reasonable planning of adjuvant treatment and help improve the therapeutic management of patients with HNSCC.
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Affiliation(s)
- Hugo Rimbach
- Department of Otorhinolaryngology, Saarland University, Homburg/Saar, Germany
| | | | - Sandrina Körner
- Department of Otorhinolaryngology, Saarland University, Homburg/Saar, Germany
| | - Sigrun Smola
- Institute of Virology, Saarland University, Homburg/Saar, Germany
| | | | - Stefanie Speicher
- Department of Otorhinolaryngology, Saarland University, Homburg/Saar, Germany
| | - Johanna Helfrich
- Department of Otorhinolaryngology, Saarland University, Homburg/Saar, Germany
| | | | - Mathias Wagner
- Department of Pathology, Saarland University, Homburg/Saar, Germany
| | - Bernhard Schick
- Department of Otorhinolaryngology, Saarland University, Homburg/Saar, Germany
| | - Jan Philipp Kühn
- Department of Otorhinolaryngology, Saarland University, Homburg/Saar, Germany
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Kühn JP, Speicher S, Linxweiler B, Körner S, Rimbach H, Wagner M, Solomayer EF, Schick B, Linxweiler M. Dual Sec62/Ki67 immunocytochemistry of liquid-based cytological preparations represents a highly valid biomarker for non-invasive detection of head and neck squamous cell carcinomas. Cytopathology 2024; 35:113-121. [PMID: 37787092 DOI: 10.1111/cyt.13310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/01/2023] [Accepted: 09/06/2023] [Indexed: 10/04/2023]
Abstract
BACKGROUND Head and neck squamous cell carcinomas (HNSCC) are frequently diagnosed in advanced stages, which limits therapeutic options and results in persistently poor patient outcomes. The aim of this study was to use liquid-based swab cytology (LBC) in combination with dual immunocytochemical detection of migration and proliferation markers Sec62 and Ki67 in order to allow non-invasive early detection of HNSCC as well as to analyse the diagnostic validity of this method for predicting the malignancy of suspicious oral lesions. METHODS 104 HNSCC patients and 28 control patients, including healthy patients (n = 17), papilloma (n = 1) and leukoplakia patients (n = 10), were included in this study. For all patients, an LBC swab followed by simultaneous immunocytochemical detection of Sec62 and Ki67 was performed. Immunocytochemical as well as cytopathological results were correlated with histological diagnoses and clinical findings. RESULTS All HNSCC patients (100%) showed dual Sec62/Ki67 positivity, and all control patients except for the papilloma patient were negative for Sec62/Ki67 (96.4%), resulting in a 100% sensitivity and 96.4% specificity of Sec62/Ki67 dual stain for non-invasive detection of HNSCC. The positive predictive value was 99% and the negative predictive value was 100%. Sec62 expression levels showed a positive correlation with tumour de-differentiation (p = 0.0489). CONCLUSION Simultaneous immunocytochemical detection of Sec62/Ki67 using LBC represents a promising non-invasive and easy-to-apply tool for the early detection of HNSCC in routine clinical practice. This novel technique can help to avoid incisional biopsies and reduce the frequency with which general anaesthesia is used in diagnostic procedures in patients with suspicious oral lesions.
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Affiliation(s)
- Jan Philipp Kühn
- Department of Otorhinolaryngology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Stefanie Speicher
- Department of Otorhinolaryngology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Barbara Linxweiler
- Department of Gynecology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Sandrina Körner
- Department of Otorhinolaryngology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Hugo Rimbach
- Department of Otorhinolaryngology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Mathias Wagner
- Department of Pathology, Saarland University Medical Center, Homburg/Saar, Germany
| | | | - Bernhard Schick
- Department of Otorhinolaryngology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Maximilian Linxweiler
- Department of Otorhinolaryngology, Saarland University Medical Center, Homburg/Saar, Germany
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Linxweiler M, Schneider M, Körner S, Knebel M, Brust LA, Braun FL, Wemmert S, Wagner M, Hecht M, Schick B, Kühn JP. Expression of 3q Oncogene SEC62 Predicts Survival in Head and Neck Squamous Cell Carcinoma Patients Treated with Primary Chemoradiation. Cancers (Basel) 2023; 16:98. [PMID: 38201525 PMCID: PMC10778380 DOI: 10.3390/cancers16010098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 12/19/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024] Open
Abstract
Primary chemoradiotherapy (CRT) is an established treatment option for locally advanced head and neck squamous cell carcinomas (HNSCC) usually combining intensity modified radiotherapy with concurrent platinum-based chemotherapy. Though the majority of patients can be cured with this regimen, treatment response is highly heterogeneous and can hardly be predicted. SEC62 represents a metastasis stimulating oncogene that is frequently overexpressed in various cancer entities and is associated with poor outcome. Its role in HNSCC patients undergoing CRT has not been investigated so far. A total of 127 HNSCC patients treated with primary CRT were included in this study. The median follow-up was 5.4 years. Pretherapeutic tissue samples of the primary tumors were used for immunohistochemistry targeting SEC62. SEC62 expression, clinical and histopathological parameters, as well as patient outcome, were correlated in univariate and multivariate survival analyses. High SEC62 expression correlated with a significantly shorter overall survival (p = 0.015) and advanced lymph node metastases (p = 0.024). Further significant predictors of poor overall and progression-free survival included response to therapy (RECIST1.1), nodal status, distant metastases, tobacco consumption, recurrence of disease, and UICC stage. In a multivariate Cox hazard proportional regression analysis, only SEC62 expression (p = 0.046) and response to therapy (p < 0.0001) maintained statistical significance as independent predictors of the patients' overall survival. This study identified SEC62 as an independent prognostic biomarker in HNSCC patients treated with primary CRT. The role of SEC62 as a potential therapeutic target and its interaction with radiation-induced molecular alterations in head and neck cancer cells should further be investigated.
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Affiliation(s)
- Maximilian Linxweiler
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (M.S.); (S.K.); (M.K.); (L.A.B.); (S.W.); (B.S.); (J.P.K.)
| | - Matthias Schneider
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (M.S.); (S.K.); (M.K.); (L.A.B.); (S.W.); (B.S.); (J.P.K.)
| | - Sandrina Körner
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (M.S.); (S.K.); (M.K.); (L.A.B.); (S.W.); (B.S.); (J.P.K.)
| | - Moritz Knebel
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (M.S.); (S.K.); (M.K.); (L.A.B.); (S.W.); (B.S.); (J.P.K.)
| | - Lukas Alexander Brust
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (M.S.); (S.K.); (M.K.); (L.A.B.); (S.W.); (B.S.); (J.P.K.)
| | - Felix Leon Braun
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (M.S.); (S.K.); (M.K.); (L.A.B.); (S.W.); (B.S.); (J.P.K.)
| | - Silke Wemmert
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (M.S.); (S.K.); (M.K.); (L.A.B.); (S.W.); (B.S.); (J.P.K.)
| | - Mathias Wagner
- Department of General and Surgical Pathology, Saarland University Medical Center, D-66421 Homburg, Germany;
| | - Markus Hecht
- Department of Radiotherapy and Radiation Oncology, Saarland University Medical Center, D-66421 Homburg, Germany;
| | - Bernhard Schick
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (M.S.); (S.K.); (M.K.); (L.A.B.); (S.W.); (B.S.); (J.P.K.)
| | - Jan Philipp Kühn
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (M.S.); (S.K.); (M.K.); (L.A.B.); (S.W.); (B.S.); (J.P.K.)
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Knebel M, Körner S, Kühn JP, Wemmert S, Brust L, Smola S, Wagner M, Bohle RM, Morris LGT, Pandey A, Schick B, Linxweiler M. Prognostic impact of intra- and peritumoral immune cell subpopulations in head and neck squamous cell carcinomas - comprehensive analysis of the TCGA-HNSC cohort and immunohistochemical validation on 101 patients. Front Immunol 2023; 14:1172768. [PMID: 37383237 PMCID: PMC10294051 DOI: 10.3389/fimmu.2023.1172768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 05/31/2023] [Indexed: 06/30/2023] Open
Abstract
Background Due to the expanding role of immune checkpoint inhibition in the treatment of head and neck squamous cell carcinoma, understanding immunological processes in the tumor microevironment (TME) has strong translational importance. Though analytical methods for a comprehensive analysis of the immunological TME have constantly improved and expanded over the past years the prognostic relevance of immune cell composition in head and neck cancer TME largely remains ambiguous with most studies focusing on one or a small subset of immune cells. Methods The overall survival (OS) of the TCGA-HNSC patient cohort comprising 513 head and neck cancer patients was correlated with a total of 29 different immune metrics including a wide spectrum of immune cell subpopulations as well as immune checkpoint receptors and cytokines using RNAseq based immune deconvolution analyses. The most significant predictors of survival among these 29 immune metrics were validated on a separate HNSCC patient cohort (n=101) using immunohistochemistry: CD3, CD20+CXCR5, CD4+CXCR5, Foxp3 and CD68. Results Overall immune infiltration irrespective of immune cell composition showed no significant correlation with the patients' overall survival in the TCGA-HNSC cohort. However, when focusing on different immune cell subpopulations, naïve B cells (p=0.0006), follicular T-helper cells (p<0.0001), macrophages (p=0.0042), regulatory T cells (p=0.0306), lymphocytes (p=0.0001), and cytotoxic T cells (p=0.0242) were identified as highly significant predictors of improved patient survival. Using immunohistochemical detection of these immune cells in a second independent validation cohort of 101 HNSCC patients, we confirmed the prognostic relevance of follicular T helper cells, cytotoxic T cells and lymphocytes. In multivariable analysis, HPV negativity and advanced UICC stages were identified as additional prognostic biomarkers associated with poor outcome. Conclusion Our study highlights the prognostic relevance of the immunological tumor environment in head and neck cancer and demonstrates that a more detailed analysis of immune cell composition and immune cell subtypes is necessary to accurately prognosticate. We observed the highest prognostic relevance for lymphocytes, cytotoxic T cells, and follicular T helper cells, suggesting further investigations focusing on these specific immune cell subpopulations not only as predictors of patient prognosis but also as promising targets of new immunotherapeutic strategies.
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Affiliation(s)
- Moritz Knebel
- Department of Otorhinolaryngology, Saarland University Medical Center, Homburg, Saar, Germany
| | - Sandrina Körner
- Department of Otorhinolaryngology, Saarland University Medical Center, Homburg, Saar, Germany
| | - Jan Philipp Kühn
- Department of Otorhinolaryngology, Saarland University Medical Center, Homburg, Saar, Germany
| | - Silke Wemmert
- Department of Otorhinolaryngology, Saarland University Medical Center, Homburg, Saar, Germany
| | - Lukas Brust
- Department of Otorhinolaryngology, Saarland University Medical Center, Homburg, Saar, Germany
| | - Sigrun Smola
- Institute of Virology, Saarland University Medical Center, Homburg, Saar, Germany
| | - Mathias Wagner
- Department of General and Surgical Pathology, Saarland University Medical Center, Homburg, Saar, Germany
| | - Rainer M. Bohle
- Department of General and Surgical Pathology, Saarland University Medical Center, Homburg, Saar, Germany
| | - Luc G. T. Morris
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York City, NY, United States
| | - Abhinav Pandey
- Weill Cornell School of Medical Sciences, New York City, NY, United States
| | - Bernhard Schick
- Department of Otorhinolaryngology, Saarland University Medical Center, Homburg, Saar, Germany
| | - Maximilian Linxweiler
- Department of Otorhinolaryngology, Saarland University Medical Center, Homburg, Saar, Germany
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Körner S, Pick T, Bochen F, Wemmert S, Körbel C, Menger MD, Cavalié A, Kühn JP, Schick B, Linxweiler M. Antagonizing Sec62 function in intracellular Ca2+ homeostasis represents a novel therapeutic strategy for head and neck cancer. Front Physiol 2022; 13:880004. [PMID: 36045752 PMCID: PMC9421371 DOI: 10.3389/fphys.2022.880004] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 02/20/2022] [Accepted: 06/30/2022] [Indexed: 12/24/2022] Open
Abstract
Various cancer types including head and neck squamous cell carcinomas (HNSCC) show a frequent amplification of chromosomal region 3q26 that encodes, among others, for the SEC62 gene. Located in the ER membrane, this translocation protein is known to play a critical role as a potential driver oncogene in cancer development. High SEC62 expression levels were observed in various cancer entities and were associated with a poor outcome and increased metastatic burden. Because of its intracellular localization the SEC62 protein is poorly accessible for therapeutic antibodies, therefore a functional SEC62 knockdown represents the most promising mechanism of a potential antineoplastic targeted therapy. By stimulating the Ca2+ efflux from the ER lumen and thereby increasing cellular stress levels, a functional inhibition of SEC62 bears the potential to limit tumor growth and metastasis formation. In this study, two potential anti-metastatic and -proliferative agents that counteract SEC62 function were investigated in functional in vitro assays by utilizing an immortalized human hypopharyngeal cancer cell line as well as a newly established orthotopic murine in vivo model. Additionally, a CRISPR/Cas9 based SEC62 knockout HNSCC cell line was generated and functionally characterized for its relevance in HNSCC cell proliferation and migration as well as sensitivity to SEC62 targeted therapy in vitro.
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Affiliation(s)
- Sandrina Körner
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Tillman Pick
- Experimental and Clinical Pharmacology and Toxicology, Pre-Clinical Center for Molecular Signalling (PSMZ), Saarland University, Homburg, Germany
| | - Florian Bochen
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Silke Wemmert
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Christina Körbel
- Institute for Clinical and Experimental Surgery, Saarland University, Homburg, Germany
| | - Michael D. Menger
- Institute for Clinical and Experimental Surgery, Saarland University, Homburg, Germany
| | - Adolfo Cavalié
- Experimental and Clinical Pharmacology and Toxicology, Pre-Clinical Center for Molecular Signalling (PSMZ), Saarland University, Homburg, Germany
| | - Jan-Philipp Kühn
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Bernhard Schick
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Maximilian Linxweiler
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
- *Correspondence: Maximilian Linxweiler,
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Kühn JP, Bochen F, Körner S, Schick B, Wagner M, Smola S, Berkó-Göttel B, Morris LGT, Wang J, Bozzato A, Linxweiler M. Podoplanin expression in lymph node metastases of head and neck cancer and cancer of unknown primary patients. Int J Biol Markers 2022; 37:280-288. [PMID: 35880270 DOI: 10.1177/03936155221105524] [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] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Head and neck squamous cell carcinomas (HNSCCs) are cancers with generally poor prognosis. Outcomes have not improved in decades, with more than half of the patients presenting with lymph node metastases at the time of diagnosis. A unique subtype of HNSCC, cancer of unknown primary of the head and neck (HNCUP) is associated with a poor outcome. Increased expression of the D2-40 gene (podoplanin) has been described for several human malignancies and has been associated with increased metastatic potential of cancer cells. METHODS In order to examine the role of podoplanin in lymph node metastasis of HNSCC generally and HNCUP specifically, we evaluated the prognostic impact of podoplanin expression in HNSCC- (n = 68) and HNCUP-associated lymph node metastases (n = 30). The expression of podoplanin was analyzed by immunohistochemical staining of lymph node tissue samples and correlated with clinical and histopathological data. RESULTS We found a non-significant tendency towards a higher podoplanin expression in HNCUP compared to HNSCC lymph node metastases and a significant correlation between a high podoplanin expression and advanced node-stage classification. Podoplanin expression had no significant impact on overall survival for both groups and did not correlate with human papillomavirus tumor status. CONCLUSION Taken together, our results suggest that upregulation of podoplanin may be associated with a stimulation of lymphatic metastasis in head and neck cancer.
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Affiliation(s)
- Jan Philipp Kühn
- Department of Otorhinolaryngology, Head and Neck Surgery, 39072Saarland University Medical Center, Homburg, Germany
| | - Florian Bochen
- Department of Otorhinolaryngology, Head and Neck Surgery, 39072Saarland University Medical Center, Homburg, Germany
| | - Sandrina Körner
- Department of Otorhinolaryngology, Head and Neck Surgery, 39072Saarland University Medical Center, Homburg, Germany
| | - Bernhard Schick
- Department of Otorhinolaryngology, Head and Neck Surgery, 39072Saarland University Medical Center, Homburg, Germany
| | - Mathias Wagner
- Department of General and Surgical Pathology, Saarland University Medical Center, Homburg, Germany
| | - Sigrun Smola
- Institute of Virology, Saarland University Medical Center, Homburg, Germany
| | | | - Luc G T Morris
- Department of Surgery, 5803Memorial Sloan Kettering Cancer Center, New York City, NY, USA.,Human Oncology and Pathogenesis Program, 39072Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Jingming Wang
- Human Oncology and Pathogenesis Program, 39072Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Alessandro Bozzato
- Department of Otorhinolaryngology, Head and Neck Surgery, 39072Saarland University Medical Center, Homburg, Germany
| | - Maximilian Linxweiler
- Department of Otorhinolaryngology, Head and Neck Surgery, 39072Saarland University Medical Center, Homburg, Germany
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Linxweiler M, Körner S, Wemmert S, Rimbach H, Helfrich J, Linxweiler B, Takacs ZF, Solomayer EF, Wagner M, Morris LGT, Schick B, Kühn JP. Cytology-based Cancer Surgery of the Head and Neck (CyCaS-HN): a prospective, randomized, controlled clinical trial. Eur Arch Otorhinolaryngol 2022; 279:4505-4514. [PMID: 35305137 PMCID: PMC9363327 DOI: 10.1007/s00405-022-07333-7] [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: 12/10/2021] [Accepted: 02/28/2022] [Indexed: 11/29/2022]
Abstract
Purpose Liquid-based cytology (LBC) is routinely used in gynecology but is rarely applied in head and neck oncology though many suspicious lesions are easily accessible. While several studies have evaluated the potential use of LBC for early detection and molecular characterization of head and neck squamous cell carcinomas (HNSCCs), no study investigated its potential role in surgical management and therapy planning so far. Methods Twenty-five patients with cT1-2 squamous cell carcinomas of the oral cavity and oropharynx were prospectively enrolled in this study and were randomized to two treatment arms: in the control arm, a diagnostic panendoscopy with incisional biopsy was followed by a second operation with transoral tumor resection ± neck dissection and tracheostomy. In the intervention arm, patients underwent LBC diagnostics and in case of a positive result received one single operation with panendoscopy and incisional biopsy for confirmation of LBC result by rapid section histology followed by transoral tumor resection ± neck dissection and tracheostomy in the same session. Results Time between clinical diagnosis and definitive surgical treatment was significantly shorter in the intervention group compared with the control group (p < 0.0001). Additionally, time of hospitalization (p < 0.0001) and cumulative operation time (p = 0.062) were shorter in the intervention group. No significant differences in overall, progression-free, and disease-specific survival were observed. Conclusion Cytology-based cancer surgery is a promising therapeutic strategy that can potentially be considered for a well-defined group of early-stage HNSCC patients and help to avoid repetitive general anesthesia, shorten the diagnosis-to-treatment interval and spare operation as well as hospitalization time.
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Affiliation(s)
- Maximilian Linxweiler
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Kirrbergerstr. 100, building 6, 66421, Homburg, Germany.
| | - Sandrina Körner
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Kirrbergerstr. 100, building 6, 66421, Homburg, Germany
| | - Silke Wemmert
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Kirrbergerstr. 100, building 6, 66421, Homburg, Germany
| | - Hugo Rimbach
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Kirrbergerstr. 100, building 6, 66421, Homburg, Germany
| | - Johanna Helfrich
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Kirrbergerstr. 100, building 6, 66421, Homburg, Germany
| | - Barbara Linxweiler
- Department of Gynecology, Obstetrics and Reproductive Medicine, Saarland University Medical Center, Homburg, Germany
| | - Zoltan Ferenc Takacs
- Department of Gynecology, Obstetrics and Reproductive Medicine, Saarland University Medical Center, Homburg, Germany
| | - Erich Franz Solomayer
- Department of Gynecology, Obstetrics and Reproductive Medicine, Saarland University Medical Center, Homburg, Germany
| | - Mathias Wagner
- Department of General and Surgical Pathology, Saarland University Medical Center, Homburg, Germany
| | - Luc G T Morris
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York City, NY, USA.,Immunogenomics and Precision Oncology Platform, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Bernhard Schick
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Kirrbergerstr. 100, building 6, 66421, Homburg, Germany
| | - Jan Philipp Kühn
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Kirrbergerstr. 100, building 6, 66421, Homburg, Germany
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8
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Kühn JP, Schmid W, Körner S, Bochen F, Wemmert S, Rimbach H, Smola S, Radosa JC, Wagner M, Morris LG, Bozzato V, Bozzato A, Schick B, Linxweiler M. HPV Status as Prognostic Biomarker in Head and Neck Cancer-Which Method Fits the Best for Outcome Prediction? Cancers (Basel) 2021; 13:cancers13184730. [PMID: 34572957 PMCID: PMC8469433 DOI: 10.3390/cancers13184730] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/11/2021] [Accepted: 09/20/2021] [Indexed: 01/22/2023] Open
Abstract
The incidence of human papillomavirus (HPV)-related head and neck cancer (HNSCC) is rising globally, presenting challenges for optimized clinical management. To date, it remains unclear which biomarker best reflects HPV-driven carcinogenesis, a process that is associated with better therapeutic response and outcome compared to tobacco/alcohol-induced cancers. Six potential HPV surrogate biomarkers were analyzed using FFPE tissue samples from 153 HNSCC patients (n = 78 oropharyngeal cancer (OPSCC), n = 35 laryngeal cancer, n = 23 hypopharyngeal cancer, n = 17 oral cavity cancer): p16, CyclinD1, pRb, dual immunohistochemical staining of p16 and Ki67, HPV-DNA-PCR, and HPV-DNA-in situ hybridization (ISH). Biomarkers were analyzed for correlation with one another, tumor subsite, and patient survival. P16-IHC alone showed the best performance for discriminating between good (high expression) vs poor outcome (low expression; p = 0.0030) in OPSCC patients. Additionally, HPV-DNA-ISH (p = 0.0039), HPV-DNA-PCR (p = 0.0113), and p16-Ki67 dual stain (p = 0.0047) were significantly associated with prognosis in uni- and multivariable analysis for oropharyngeal cancer. In the non-OPSCC group, however, none of the aforementioned surrogate markers was prognostic. Taken together, P16-IHC as a single biomarker displays the best diagnostic accuracy for prognosis stratification in OPSCC patients with a direct detection of HPV-DNA by PCR or ISH as well as p16-Ki67 dual stain as potential alternatives.
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Affiliation(s)
- Jan Philipp Kühn
- Department of Otorhinolaryngology, Saarland University Medical Center, D-66421 Homburg, Germany; (J.P.K.); (W.S.); (S.K.); (F.B.); (S.W.); (H.R.); (V.B.); (A.B.); (B.S.)
| | - Wendelin Schmid
- Department of Otorhinolaryngology, Saarland University Medical Center, D-66421 Homburg, Germany; (J.P.K.); (W.S.); (S.K.); (F.B.); (S.W.); (H.R.); (V.B.); (A.B.); (B.S.)
| | - Sandrina Körner
- Department of Otorhinolaryngology, Saarland University Medical Center, D-66421 Homburg, Germany; (J.P.K.); (W.S.); (S.K.); (F.B.); (S.W.); (H.R.); (V.B.); (A.B.); (B.S.)
| | - Florian Bochen
- Department of Otorhinolaryngology, Saarland University Medical Center, D-66421 Homburg, Germany; (J.P.K.); (W.S.); (S.K.); (F.B.); (S.W.); (H.R.); (V.B.); (A.B.); (B.S.)
| | - Silke Wemmert
- Department of Otorhinolaryngology, Saarland University Medical Center, D-66421 Homburg, Germany; (J.P.K.); (W.S.); (S.K.); (F.B.); (S.W.); (H.R.); (V.B.); (A.B.); (B.S.)
| | - Hugo Rimbach
- Department of Otorhinolaryngology, Saarland University Medical Center, D-66421 Homburg, Germany; (J.P.K.); (W.S.); (S.K.); (F.B.); (S.W.); (H.R.); (V.B.); (A.B.); (B.S.)
| | - Sigrun Smola
- Institute of Virology, Saarland University Medical Center, D-66421 Homburg, Germany;
| | - Julia Caroline Radosa
- Department of Gynecology and Obstetrics, Saarland University Medical Center, D-66421 Homburg, Germany;
| | - Mathias Wagner
- Department of General and Surgical Pathology, Saarland University Medical Center, D-66421 Homburg, Germany;
| | - Luc G.T. Morris
- Immunogenomics and Precision Oncology Platform, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA;
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Victoria Bozzato
- Department of Otorhinolaryngology, Saarland University Medical Center, D-66421 Homburg, Germany; (J.P.K.); (W.S.); (S.K.); (F.B.); (S.W.); (H.R.); (V.B.); (A.B.); (B.S.)
| | - Alessandro Bozzato
- Department of Otorhinolaryngology, Saarland University Medical Center, D-66421 Homburg, Germany; (J.P.K.); (W.S.); (S.K.); (F.B.); (S.W.); (H.R.); (V.B.); (A.B.); (B.S.)
| | - Bernhard Schick
- Department of Otorhinolaryngology, Saarland University Medical Center, D-66421 Homburg, Germany; (J.P.K.); (W.S.); (S.K.); (F.B.); (S.W.); (H.R.); (V.B.); (A.B.); (B.S.)
| | - Maximilian Linxweiler
- Department of Otorhinolaryngology, Saarland University Medical Center, D-66421 Homburg, Germany; (J.P.K.); (W.S.); (S.K.); (F.B.); (S.W.); (H.R.); (V.B.); (A.B.); (B.S.)
- Correspondence: ; Tel.: +49-6841-1622928
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Müller CSL, Pföhler C, Wahl M, Bochen F, Körner S, Kühn JP, Bozzato A, Schick B, Linxweiler M. Expression of SEC62 Oncogene in Benign, Malignant and Borderline Melanocytic Tumors-Unmasking the Wolf in Sheep's Clothing? Cancers (Basel) 2021; 13:cancers13071645. [PMID: 33915997 PMCID: PMC8036965 DOI: 10.3390/cancers13071645] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 02/28/2021] [Revised: 03/29/2021] [Accepted: 03/30/2021] [Indexed: 01/09/2023] Open
Abstract
Simple Summary Amplification and overexpression of the SEC62 oncogene was reported in a variety of human cancers and was associated with poor prognosis as well as lymph node and distant metastases. In this study, SEC62 expression was analyzed in benign, borderline, and malignant melanocytic lesions of 209 patients. We found the highest expression in Spitz nevi, followed by melanoma metastases, primary melanoma, congenital nevi, and blue nevi. In melanoma patients, high Sec62 levels correlated with shorter overall and progression-free survival. Significantly higher Sec62 levels were found in melanomas with lymph node and distant metastases compared with those without. Taken together, these data suggest a relevant role of SEC62 as a metastasis-stimulating oncogene in melanoma development, which represents a promising therapeutic target. Abstract SEC62 oncogene located at chromosomal region 3q26 encodes for a transmembrane protein of the endoplasmic reticulum (ER) and is expressed at high levels in numerous human malignancies. SEC62 overexpression has been associated with worse prognosis and high risk for lymphatic and distant metastases in head and neck cancer, cervical cancer, hepatocellular cancer, and lung cancer. However, its role in the development and tumor biology of melanocytic lesions has not been investigated so far. An immunohistochemical study including 209 patients with melanocytic lesions (malignant melanoma (MM), n = 93; melanoma metastases (MET), n = 28; Spitz nevi (SN), n = 29; blue nevi (BN), n = 21; congenital nevi (CN), n = 38) was conducted and SEC62 expression was correlated with clinical data including patient survival and histopathological characteristics. SN showed the highest SEC62 expression levels followed by MET, MM, CN, and BN. High SEC62 expression correlated with a shorter overall and progression-free survival in MM patients. Additionally, high Sec62 levels correlated significantly with higher tumor size (T stage), the presence of tumor ulceration, and the presence of lymph node as well as distant metastases. Strikingly, SEC62 expression showed a strong correlation with Clark level. Taken together, these data demonstrate that SEC62 is a promising prognostic marker in MM and has the potential to predict biological behavior and clinical aggressiveness of melanocytic lesions.
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Affiliation(s)
- Cornelia S. L. Müller
- Department of Dermatology, Venerology and Allergology, Saarland University Medical Center, D-66421 Homburg, Germany; (C.S.L.M.); (C.P.); (M.W.)
| | - Claudia Pföhler
- Department of Dermatology, Venerology and Allergology, Saarland University Medical Center, D-66421 Homburg, Germany; (C.S.L.M.); (C.P.); (M.W.)
| | - Maria Wahl
- Department of Dermatology, Venerology and Allergology, Saarland University Medical Center, D-66421 Homburg, Germany; (C.S.L.M.); (C.P.); (M.W.)
| | - Florian Bochen
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (F.B.); (S.K.); (J.P.K.); (A.B.); (B.S.)
| | - Sandrina Körner
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (F.B.); (S.K.); (J.P.K.); (A.B.); (B.S.)
| | - Jan Philipp Kühn
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (F.B.); (S.K.); (J.P.K.); (A.B.); (B.S.)
| | - Alessandro Bozzato
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (F.B.); (S.K.); (J.P.K.); (A.B.); (B.S.)
| | - Bernhard Schick
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (F.B.); (S.K.); (J.P.K.); (A.B.); (B.S.)
| | - Maximilian Linxweiler
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (F.B.); (S.K.); (J.P.K.); (A.B.); (B.S.)
- Correspondence: ; Tel.: +49-6841-162-2928
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10
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Linxweiler M, Pillong L, Kopanja D, Kühn JP, Wagenpfeil S, Radosa JC, Wang J, Morris LGT, Al Kadah B, Bochen F, Körner S, Schick B. Augmented reality-enhanced navigation in endoscopic sinus surgery: A prospective, randomized, controlled clinical trial. Laryngoscope Investig Otolaryngol 2020; 5:621-629. [PMID: 32864433 PMCID: PMC7444769 DOI: 10.1002/lio2.436] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 07/11/2020] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE Endoscopic sinus surgery represents the gold standard for surgical treatment of chronic sinus diseases. Thereby, navigation systems can be of distinct use. In our study, we tested the recently developed KARL STORZ NAV1 SinusTracker navigation software that incorporates elements of augmented reality (AR) to provide a better preoperative planning and guidance during the surgical procedure. METHODS One hundred patients with chronic sinus disease were operated on using either a conventional navigation software (n = 52, non-AR, control group) or a navigation software incorporating AR elements (n = 48, AR, intervention group). Incidence of postoperative complications, duration of surgery, surgeon-reported benefit from the navigation system and patient-reported postoperative rehabilitation were assessed. RESULTS The surgeons reported a higher benefit during surgery, used the navigation system for more surgical steps and spent longer time with preoperative image analysis when using the AR system as compared with the non-AR system. No significant differences were seen in terms of postoperative complications, target registration error, operation time and postoperative rehabilitation. CONCLUSION The AR enhanced navigation software shows a high acceptance by sinus surgeons in different stages of surgical training and offers potential benefits during surgery without affecting the duration of the operation or the incidence of postoperative complications. LEVEL OF EVIDENCE 1b.
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Affiliation(s)
- Maximilian Linxweiler
- Department of Otorhinolaryngology, Head and Neck SurgerySaarland University Medical CentreHomburgGermany
| | - Lukas Pillong
- Department of Otorhinolaryngology, Head and Neck SurgerySaarland University Medical CentreHomburgGermany
| | - Dragan Kopanja
- Department of Otorhinolaryngology, Head and Neck SurgerySaarland University Medical CentreHomburgGermany
| | - Jan P. Kühn
- Department of Otorhinolaryngology, Head and Neck SurgerySaarland University Medical CentreHomburgGermany
| | - Stefan Wagenpfeil
- Institute of Medical Biometry, Epidemiology and Medical InformaticsSaarland University Medical CentreHomburgGermany
| | - Julia C. Radosa
- Department of Gynecology, Obstetrics and Reproductive MedicineSaarland University Medical CentreHomburgGermany
| | - Jingming Wang
- Human Oncology and Pathogenesis ProgramMemorial Sloan Kettering Cancer CenterNew YorkNew YorkUSA
| | - Luc G. T. Morris
- Immunogenomics and Precision Oncology PlatformMemorial Sloan Kettering Cancer CenterNew YorkNew YorkUSA
- Department of SurgeryMemorial Sloan Kettering Cancer CenterNew YorkNew YorkUSA
| | - Basel Al Kadah
- Department of OtorhinolaryngologyBethanien HospitalPlauenGermany
| | - Florian Bochen
- Department of Otorhinolaryngology, Head and Neck SurgerySaarland University Medical CentreHomburgGermany
| | - Sandrina Körner
- Department of Otorhinolaryngology, Head and Neck SurgerySaarland University Medical CentreHomburgGermany
| | - Bernhard Schick
- Department of Otorhinolaryngology, Head and Neck SurgerySaarland University Medical CentreHomburgGermany
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Osmanovic A, Koch M, Müschen L, Seeliger T, Gingele S, Stangel M, Dengler R, Petri S, Skripuletz T, Körner S. P28 Blink R1 latency outcome in patients with chronic acquired demyelinating neuropathy under immunoglobulin treatment. Clin Neurophysiol 2020. [DOI: 10.1016/j.clinph.2019.12.034] [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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12
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Schadendorf D, Hassel J, Fluck M, Eigentler T, Loquai C, Berneburg M, Gutzmer R, Meier F, Mohr P, Hauschild A, Becker J, Menzer C, Kiecker F, Dippel E, Simon JC, Conrad B, Garbe C, Körner S, Livingstone E, Zimmer L. Adjuvant immunotherapy with nivolumab (NIVO) alone or in combination with ipilimumab (IPI) versus placebo in stage IV melanoma patients with no evidence of disease (NED): A randomized, double-blind phase II trial (IMMUNED). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz394.064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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13
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Vogt S, Schreiber S, Kollewe K, Körner S, Heinze HJ, Dengler R, Petri S, Vielhaber S. Dyspnea in amyotrophic lateral sclerosis: The Dyspnea-ALS-Scale (DALS-15) essentially contributes to the diagnosis of respiratory impairment. Respir Med 2019; 154:116-121. [PMID: 31234039 DOI: 10.1016/j.rmed.2019.06.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 04/29/2019] [Accepted: 06/12/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Dyspnea is a cardinal but often underestimated symptom in amyotrophic lateral sclerosis (ALS). The newly developed Dyspnea-ALS-Scale (DALS-15) is highly relevant for therapeutic decisions because dyspnea is a separate criterion to consider noninvasive ventilation (NIV) in ALS. In comparison to the limited effects of neuroprotective compounds, NIV has the greatest impact on survival and improves quality of life. OBJECTIVE To investigate whether dyspnea corresponds to parameters of respiratory status mainly used in clinical neurological practice. We also investigated if the DALS-15 could help identify patients for consideration of NIV in whom neither spirometry nor blood gas parameters indicate the need for NIV (forced vital capacity (FVC) < 50% or probable <75%, pCO2 ≥45 mmHg). METHODS Seventy ALS patients with dyspnea according to the DALS-15 obtained blood gas analysis and spirometry (FVC in sitting and supine positions). The supine decline in FVC was calculated. RESULTS There was no linear relationship between dyspnea and spirometry as well as blood gases. 83% of our patients had an upright FVC still greater than 50% and no daytime hypercapnia. CONCLUSIONS Our study clearly shows that dyspnea can occur independently of objective indicators of respiratory impairment like spirometry or blood gases. Hence, the DALS-15 covers another aspect of respiratory impairment than these tests and refers to the subjective component of respiratory impairment. It detects dyspnea in a considerable proportion of patients in whom NIV should thus be considered although their spirometric and blood gas results do not point towards NIV. The DALS-15 therefore may help to improve the stratification of patients with respiratory impairment for more efficient symptom management and timely coordination of care.
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Affiliation(s)
- S Vogt
- Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany.
| | - S Schreiber
- Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany
| | - K Kollewe
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | - S Körner
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | - H-J Heinze
- Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany; German Center for Neurodegenerative Diseases, Magdeburg, Germany; Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - R Dengler
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | - S Petri
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | - S Vielhaber
- Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany; German Center for Neurodegenerative Diseases, Magdeburg, Germany
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Bochen F, Balensiefer B, Körner S, Bittenbring JT, Neumann F, Koch A, Bumm K, Marx A, Wemmert S, Papaspyrou G, Zuschlag D, Kühn JP, Al Kadah B, Schick B, Linxweiler M. Vitamin D deficiency in head and neck cancer patients - prevalence, prognostic value and impact on immune function. Oncoimmunology 2018; 7:e1476817. [PMID: 30228945 PMCID: PMC6140588 DOI: 10.1080/2162402x.2018.1476817] [Citation(s) in RCA: 32] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 05/08/2018] [Accepted: 05/09/2018] [Indexed: 01/17/2023] Open
Abstract
Vitamin D deficiency is frequently observed in human cancer patients and a prognostic relevance could be shown for some entities. Additionally, it is known that vitamin D can stimulate the patients' antitumor immunity. However, valid epidemiological data for head and neck squamous cell carcinoma (HNSCC) patients are sparse and functional studies on a possible connection between vitamin D and the patients' immune system are missing. 25-OH vitamin D serum levels were analyzed in 231 HNSCC patients and 232 healthy controls and correlated with clinical data and patient survival. Intra- and peritumoral infiltration with T-cell, NK-cell and macrophage populations was analyzed in 102 HNSCC patients by immunohistochemistry. In 11 HNSCC patients, NK-cells were isolated before and after vitamin D substitution and analyzed for their cytotoxic activity directed against a HNSCC cell line. Vitamin D serum levels were significantly lower in HNSCC patients compared with healthy controls. Low vitamin D levels were associated with lymphatic metastasis and a negative HPV status and were a significant predictor of poor overall survival. HNSCC patients with severe vitamin D deficiency showed significantly altered intra- and peritumoral immune cell infiltrate levels. After vitamin D substitution, the patients' NK cells showed a significant rise in cytotoxic activity. Taken together, we could show that Vitamin D deficiency is highly prevalent in HNSCC patients and is a predictor of poor survival. Vitamin D substitution used as an adjuvant in immune therapies such as cetuximab and nivolumab treatment could support antitumorigenic immune responses, thus contributing to the improvement of the patients' prognosis in the context of a multimodal therapy.
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Affiliation(s)
- Florian Bochen
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Benedikt Balensiefer
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Sandrina Körner
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Jörg Thomas Bittenbring
- Department of Hematology, Oncology, Rheumatology and Clinical Immunology, Saarland University Medical Center, Homburg, Germany
| | - Frank Neumann
- Department of Hematology, Oncology, Rheumatology and Clinical Immunology, Saarland University Medical Center, Homburg, Germany
| | - Armand Koch
- Department of Otorhinolaryngology, Zitha Hospital, Luxemburg-City, Luxemburg
| | - Klaus Bumm
- Department of Otorhinolaryngology, Head and Neck Surgery, Caritas Hospital, Saarbrücken, Germany
| | - Anke Marx
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Silke Wemmert
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Georgios Papaspyrou
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - David Zuschlag
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Jan Philipp Kühn
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Basel Al Kadah
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Bernhard Schick
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
| | - Maximilian Linxweiler
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, Homburg, Germany
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15
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Janikovits J, Müller M, Krzykalla J, Körner S, Echterdiek F, Lahrmann B, Grabe N, Schneider M, Benner A, Doeberitz MVK, Kloor M. High numbers of PDCD1 (PD-1)-positive T cells and B2M mutations in microsatellite-unstable colorectal cancer. Oncoimmunology 2017; 7:e1390640. [PMID: 29308317 DOI: 10.1080/2162402x.2017.1390640] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 09/22/2017] [Accepted: 10/05/2017] [Indexed: 12/31/2022] Open
Abstract
DNA mismatch repair (MMR)-deficient cancers accumulate high numbers of coding microsatellite mutations, which lead to the generation of highly immunogenic frameshift peptide (FSP) neoantigens. MMR-deficient cells can grow out to clinically manifest cancers either if they evade immune cell attack or if local T-cells get exhausted. Therefore, a subset of MSI cancer patients responds particularly well to treatment with immune checkpoint inhibitors. We analyzed whether immune evasion in MMR-deficient cancer mediated by loss of HLA class I or II antigens is related to local immune cell activation status. Microsatellites located in Beta2-microglobulin (B2M) and the HLA class II-regulatory genes RFX5 and CIITA were analyzed for mutations in MMR-deficient colorectal cancers (n = 53). The results were related to CD3-positive and PDCD1 (PD-1)-positive T-cell infiltration. PDCD1 (PD-1)-positive T-cell counts were significantly higher in B2M-mutant compared to B2M-wild type tumors (median: 22.2 cells per 0.25 mm2 vs. 2.0 cells per 0.25 mm2, Wilcoxon test p = 0.002). Increasing PDCD1 (PD-1)-positive T-cell infiltration was significantly related to an increased likelihood of B2M mutations (OR = 1.81). HLA class II antigen expression status was significantly associated with enhanced overall T-cell infiltration, but not related to PDCD1 (PD-1)-positive T-cells. These results suggest that immune evasion mediated by B2M mutation-induced loss of HLA class I antigen expression predominantly occurs in an environment of activated PDCD1 (PD-1)-positive T cell infiltration. If B2M mutations interfere with anti-PDCD1 (PD-1)/CD274 (PD-L1) therapy success, we predict that resistance towards anti-PDCD1 (PD-1) therapy may - counterintuitively - be particularly common in patients with MMR-deficient cancers that show high PDCD1 (PD-1)-positive T cell infiltration.
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Affiliation(s)
- Jonas Janikovits
- Department of Applied Tumour Biology, Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany, and Clinical Cooperation Unit Applied Tumour Biology, DKFZ (German Cancer Research Center) Heidelberg, Heidelberg, Germany, and Molecular Medicine Partnership Unit (MMPU), Heidelberg University Hospital and EMBL Heidelberg
| | - Meike Müller
- Department of Applied Tumour Biology, Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany, and Clinical Cooperation Unit Applied Tumour Biology, DKFZ (German Cancer Research Center) Heidelberg, Heidelberg, Germany, and Molecular Medicine Partnership Unit (MMPU), Heidelberg University Hospital and EMBL Heidelberg
| | - Julia Krzykalla
- Division of Biostatistics, DKFZ (German Cancer Research Center), Heidelberg, Germany
| | - Sandrina Körner
- Department of Applied Tumour Biology, Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany, and Clinical Cooperation Unit Applied Tumour Biology, DKFZ (German Cancer Research Center) Heidelberg, Heidelberg, Germany, and Molecular Medicine Partnership Unit (MMPU), Heidelberg University Hospital and EMBL Heidelberg
| | - Fabian Echterdiek
- Department of Applied Tumour Biology, Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany, and Clinical Cooperation Unit Applied Tumour Biology, DKFZ (German Cancer Research Center) Heidelberg, Heidelberg, Germany, and Molecular Medicine Partnership Unit (MMPU), Heidelberg University Hospital and EMBL Heidelberg
| | - Bernd Lahrmann
- Hamamatsu Tissue Imaging and Analysis (TIGA) Center, Heidelberg, Germany
| | - Niels Grabe
- Hamamatsu Tissue Imaging and Analysis (TIGA) Center, Heidelberg, Germany
| | - Martin Schneider
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Axel Benner
- Division of Biostatistics, DKFZ (German Cancer Research Center), Heidelberg, Germany
| | - Magnus von Knebel Doeberitz
- Department of Applied Tumour Biology, Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany, and Clinical Cooperation Unit Applied Tumour Biology, DKFZ (German Cancer Research Center) Heidelberg, Heidelberg, Germany, and Molecular Medicine Partnership Unit (MMPU), Heidelberg University Hospital and EMBL Heidelberg
| | - Matthias Kloor
- Department of Applied Tumour Biology, Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany, and Clinical Cooperation Unit Applied Tumour Biology, DKFZ (German Cancer Research Center) Heidelberg, Heidelberg, Germany, and Molecular Medicine Partnership Unit (MMPU), Heidelberg University Hospital and EMBL Heidelberg
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Warth A, Körner S, Penzel R, Muley T, Dienemann H, Schirmacher P, von Knebel-Doeberitz M, Weichert W, Kloor M. Microsatellite instability in pulmonary adenocarcinomas: a comprehensive study of 480 cases. Virchows Arch 2015; 468:313-9. [PMID: 26637197 DOI: 10.1007/s00428-015-1892-7] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 09/27/2015] [Accepted: 11/25/2015] [Indexed: 02/06/2023]
Abstract
A major molecular pathway of genetic instability in cancer is DNA mismatch repair deficiency, leading to accumulation of numerous mutations at repetitive DNA sequence stretches (microsatellites), known as high-level microsatellite instability (MSI-H). In colorectal cancer, MSI-H tumors show a clinical behavior different from microsatellite-stable (MSS) tumors. Data about the prevalence of MSI among non-small cell lung cancer (NSCLC) are conflicting, and clinical relevance of MSI is largely unknown. We analyzed a series of 480 pulmonary adenocarcinomas (ADC) for MSI using a sensitive mononucleotide marker panel (BAT25, BAT26, and CAT25). Positive cases were further analyzed by immunohistochemical staining for DNA mismatch repair proteins. Results were correlated with clinicopathological variables. MSI-H was detected in 4/480 (0.8 %) cases. In none of these, a background of Lynch syndrome was found. Three of the patients developed a metachronous carcinoma (esophagus, pancreas, and kidney). All MSI-H cases were stage I and occurred in smokers/ex-smokers. Mutations were found in EGFR (n = 2), KRAS (n = 1), or BRAF (n = 1). MSI-H neoplasms had a higher proliferative activity (38.7 %) than MSS neoplasms (28.3 %). Mean overall survival for MSS and MSI-H cases was 64.8 (CI 60.4-69.1) and 47.1 (CI 21-73.2) months, respectively. When specific mononucleotide marker panels are applied, the MSI-H phenotype is rare and predominantly found in early stage ADC of smokers. However, the frequency of MSI-H is in the range of other relevant molecular alterations. In the era of precision therapy, associations with distinct clinicopathological variables merit further investigation.
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Affiliation(s)
- Arne Warth
- Institute of Pathology, Heidelberg University, University Hospital Heidelberg, Im Neuenheimer Feld 224, 69120, Heidelberg, Germany.
| | - Sandrina Körner
- Department of Applied Tumor Biology, Institute of Pathology, University of Heidelberg, Heidelberg, Germany
| | - Roland Penzel
- Institute of Pathology, Heidelberg University, University Hospital Heidelberg, Im Neuenheimer Feld 224, 69120, Heidelberg, Germany
| | - Thomas Muley
- Translational Research Unit, Thoraxklinik at Heidelberg University, Heidelberg, Germany
| | - Hendrik Dienemann
- Department of Thoracic Surgery, Thoraxklinik at Heidelberg University, Heidelberg, Germany
| | - Peter Schirmacher
- Institute of Pathology, Heidelberg University, University Hospital Heidelberg, Im Neuenheimer Feld 224, 69120, Heidelberg, Germany
| | | | - Wilko Weichert
- Institute of Pathology, Heidelberg University, University Hospital Heidelberg, Im Neuenheimer Feld 224, 69120, Heidelberg, Germany.,National Center for Tumor Diseases (NCT), Heidelberg, Germany.,Institute of Pathology, Technical University Munich (TUM), Munich, Germany
| | - Matthias Kloor
- Department of Applied Tumor Biology, Institute of Pathology, University of Heidelberg, Heidelberg, Germany.,Molecular Medicine Partnership Unit, University of Heidelberg and European Molecular Biology Laboratory, Heidelberg, Germany.,Clinical Cooperation Unit Applied Tumor Biology, DKFZ, Heidelberg, Germany
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Funke A, Grehl T, Großkreutz J, Münch C, Walter B, Kettemann D, Karnapp C, Gajewski N, Meyer R, Maier A, Gruhn K, Prell T, Kollewe K, Abdulla S, Kobeleva X, Körner S, Petri S, Meyer T. Hilfsmittelversorgung bei der amyotrophen Lateralsklerose. Nervenarzt 2015. [DOI: 10.1007/s00115-015-4398-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Körner S, Kiefer F, Peibst R, Heinemeyer F, Krügener J, Eberstein M. Basic Study on the Influence of Glass Composition and Aluminum Content on the Ag/Al Paste Contact Formation to Boron Emitters. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.egypro.2015.03.284] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Körner S, Menke R, Filippini N, Douaud G, Knight S, Talbot K, Turner M. Deutliche Progression der Schädigung der grauen Substanz bei konstanten Befunden in der weißen Substanz im Krankheitsverlauf der Amyotrophen Lateralsklerose: Eine longitudinale MRT-Studie. KLIN NEUROPHYSIOL 2014. [DOI: 10.1055/s-0034-1371257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Abdulla S, Kaufmann J, Machts J, Körner S, Kollewe K, Dengler R, Petri S, Heinze HJ, Vielhaber S. Neuropsychologisches Profil bei ALS in Relation zum Hippokampusvolumen. KLIN NEUROPHYSIOL 2014. [DOI: 10.1055/s-0034-1371256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Körner S. Erfahrungsbericht zum Projekt Korrelation verschiedener Krankheits-Phänotypen und Krankheitsstadien der Amyotrophen Lateralsklerose (ALS) mit Veränderungen in der grauen und weißen Substanz mittels voxel based morphometry (VBM) und diffusion tensor imaging (DTI) Analysen an der University of Oxford (Oxford Centre for Functional MRI of the Brain (FMRIB)). KLIN NEUROPHYSIOL 2013. [DOI: 10.1055/s-0033-1351245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- S. Körner
- Abteilung für Neurologie mit klinischer Neurophysiologie, Medizinische Hochschule Hannover
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Kollewe K, Körner S, Paracka L, Petri S. Elektrodiagnostische Kriterien der amyotrophen Lateralsklerose. KLIN NEUROPHYSIOL 2013. [DOI: 10.1055/s-0033-1343165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- K. Kollewe
- Medizinische Hochschule Hannover, Neurologie mit klinischer Neurophysiologie
| | - S. Körner
- Medizinische Hochschule Hannover, Neurologie mit klinischer Neurophysiologie
| | - L. Paracka
- Medizinische Hochschule Hannover, Neurologie mit klinischer Neurophysiologie
| | - S. Petri
- Medizinische Hochschule Hannover, Neurologie mit klinischer Neurophysiologie
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Körner S, Reifenhäuser C. Radon at workplaces in Bavaria and experiences with remediation. KERNTECHNIK 2013. [DOI: 10.3139/124.110265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
In Germany radon exposure at certain workplaces has been regulated by the Radiation Protection Ordinance since 2001. However in Bavaria studies have been conducted since 1996. The radon exposure of all staff concerned was estimated and thereby several companies were identified where the exposure exceeded 6 mSv per year. Since then the exposure of the staff has been continuously monitored in these companies. Remediation measures specifically adjusted to local conditions led to a reduction of the exposure in many of these companies. Therefore only in 11 of the original 81 companies exposures of more than 6 mSv/a persist until today. As the Bavarian Environment Agency (LfU) oversaw the measurements and remediation measures there exists profound knowledge within the LfU of the local conditions mainly in water supply facilities as well as of the various remediation measures and their success. Furthermore, a few investigations concerning radon are carried out at workplaces not regulated by the Radiation Protection Ordinance. As an example we present a town hall where the measured radon concentrations led to a heated public dispute. Here the LfU successfully communicated factual information and the evaluation of the radon situation with regard to international recommendations.
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Affiliation(s)
- S. Körner
- Bayerisches Landesamt für Umwelt (LfU), Bgm.-Ulrich-Straße 160, D-86179 Augsburg, Germany. E-mail:
| | - C. Reifenhäuser
- Bayerisches Landesamt für Umwelt (LfU), Bgm.-Ulrich-Straße 160, D-86179 Augsburg, Germany. E-mail:
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Reifenhäuser C, Körner S. Notifiable work activities in water supply facilities – execution experience from Bavaria. KERNTECHNIK 2013. [DOI: 10.3139/124.100545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Since 2001, the protection against natural radiation is implemented in the German Radiation Protection Ordinance. Water supply facilities are now obliged to estimate the radon exposure of their staff. In 75 water supply facilities in Bavaria, Germany, radon exposures above the action limit of 6 mSv per year were determined. In these facilities the radon exposure has to be continuously monitored. By the proposal of the Bavarian Environment Agency (LfU), this should be done by continuous wearing of personal track-etch detectors, that are changed every three months. The results are sent to the LfU and reported to the central German dose register. Because of measuring periods of three months a high radon exposure that could probably exceed the annual limit of 20 mSv can be recognised at an early stage and immediate protection measures can be taken. In collaboration with the University of Regensburg remedial strategies for the permanent reduction of the radon exposure have been developed. The exposure is effectively reduced by reducing the time spent inside the units as much as possible. A very effective way to reduce the radon concentration inside buildings and hence the radon exposure is to blow fresh air directly into the work place of the staff with stationary or mobile devices. An alternative way to reduce the indoor air concentration is to avoid any transfer of radon polluted air exhausted from purification tanks to indoor air. For a long lasting success of the remedial measures a work instruction was developed by the LfU. All plants, their mean radon concentration and the measures to be taken have to be stated there.
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Affiliation(s)
- C. Reifenhäuser
- Bayerisches Landesamt für Umwelt, Bürgermeister-Ulrich-Straße 160, D 86179 Augsburg, Germany. E-mail:
| | - S. Körner
- Bayerisches Landesamt für Umwelt, Bürgermeister-Ulrich-Straße 160, D 86179 Augsburg, Germany. E-mail:
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Reifenhäuser C, Körner S, Mallick R. Workplaces with natural radionuclides – investigation results from Bavaria. KERNTECHNIK 2013. [DOI: 10.3139/124.100552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Since the amendment of the German Radiation Protection Ordinance in the year 2001 special workplaces with increased exposure due to natural terrestrial radiation have been subject to legal regulations. After the Radiation Protection Ordinance came into force the Bavarian Environment Agency informed all water supply facilities, breweries, dairies, mineral water manufactures, operators of underground workplaces and radon spas that the annual radon exposure of their staff has to be estimated. In Bavaria approximately 3330 companies with workplaces with exposure to radon were investigated. Herein the water supply facilities represented the largest group with 2550 companies. In about 96 % of all investigated companies the radon exposure of the staff is below the action level of 6 mSv per year. In 75 water supply facilities and two mines the radon exposure of the staff exceeded the action level (6 mSv/a) or the annual limit (20 mSv/a). Workplaces with increased exposure due to uranium and thorium are of secondary importance in Bavaria. Within the scope of a research project 13 companies were found, that still use thoriated welding electrodes. Only a few facilities use thoriated mantles, thorium alloys or natural thorium and uranium. The effective dose of all examined workers was below the action level of 6 mSv per year.
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Affiliation(s)
- C. Reifenhäuser
- Bayerisches Landesamt für Umwelt, Bürgermeister-Ulrich-Straße 160, 86179 Augsburg, Germany. E-mail:
| | - S. Körner
- Bayerisches Staatsministerium für Umwelt, Gesundheit und Verbraucherschutz, Rosenkavalierplatz, 81925 München, Germany
| | - R. Mallick
- Bayerisches Staatsministerium für Umwelt, Gesundheit und Verbraucherschutz, Rosenkavalierplatz, 81925 München, Germany
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Kollewe K, Wurster U, Sinzenich T, Mohammadi B, Körner S, Dengler R, Petri S. Ganglioside Antibodies in Amyotrophic Lateral Sclerosis. KLIN NEUROPHYSIOL 2013. [DOI: 10.1055/s-0033-1337234] [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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Körner S, Kollewe K, Ilsemann J, Müller-Heine A, Dengler R, Krampfl K, Petri S. Prevalence and prognostic impact of comorbidities in amyotrophic lateral sclerosis. Eur J Neurol 2012; 20:647-54. [PMID: 23094606 DOI: 10.1111/ene.12015] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 09/18/2012] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND PURPOSE Amyotrophic lateral sclerosis (ALS) is characterized by rapidly progressive paralysis of striated muscles due to the loss of upper and lower motor neurons. The disease leads to death within 2-5 years, mainly due to respiratory failure. The pathogenesis of ALS is still unexplained for the most part. In this study, we aimed to determine the prevalence of different cardiovascular, metabolic, and neuropsychiatric comorbidities in a large ALS cohort and to evaluate their influence on the disease course. METHODS A cohort of 514 patients with ALS of our ALS outpatient clinic was investigated retrospectively with reference to known prognostic factors and comorbidities. The prevalence of concomitant diseases was compared with the data from the German general population. Uni- and multivariate survival analyses were performed using the Cox proportional hazards model and Kaplan-Meier analysis. RESULTS The prevalence of cardiovascular diseases and cardiovascular risk factors was significantly lower in patients with ALS compared to the German general population, whilst the prevalence of dementia, parkinsonism, and depressive symptoms was significantly higher in the ALS cohort. None of the investigated comorbidities had an influence on the disease course or on the survival of patients. CONCLUSIONS Persons with cardiovascular diseases or risk factors seem to be at lower risk of ALS. Although these diseases are apparently somehow protective regarding ALS susceptibility, their presence did not modify disease progression and survival in patients with ALS. Our study further confirms the well-known continuum between ALS and dementia. It also suggests a link with other neurodegenerative diseases such as Parkinson's disease.
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Affiliation(s)
- S Körner
- Department of Neurology, Hannover Medical School, Hannover, Germany.
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Bergamaschi P, Frankenberg C, Meirink JF, Krol M, Dentener F, Wagner T, Platt U, Kaplan JO, Körner S, Heimann M, Dlugokencky EJ, Goede A. Satellite chartography of atmospheric methane from SCIAMACHY on board ENVISAT: 2. Evaluation based on inverse model simulations. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006jd007268] [Citation(s) in RCA: 232] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Frankenberg C, Meirink JF, Bergamaschi P, Goede APH, Heimann M, Körner S, Platt U, van Weele M, Wagner T. Satellite chartography of atmospheric methane from SCIAMACHY on board ENVISAT: Analysis of the years 2003 and 2004. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005jd006235] [Citation(s) in RCA: 159] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Ekanayake P, Menge H, Körner S, Schneider H, Ries ME, Brereton MG. Mean Field Contribution to the Average Segmental Orientation of a Polymer Network Studied by Deuterium Nuclear Magnetic Resonance: Temperature Dependence. Macromolecules 2001. [DOI: 10.1021/ma0102868] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Pfannes SD, Müller B, Körner S, Bessler WG, Hoffmann P. Induction of soluble antitumoral mediators by synthetic analogues of bacterial lipoprotein in bone marrow-derived macrophages from LPS-responder and -nonresponder mice. J Leukoc Biol 2001; 69:590-7. [PMID: 11310845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
Macrophage-dependent antitumoral activity is partly mediated by soluble factors including cytokines, reactive-oxygen intermediates (ROIs), and reactive-nitrogen intermediates (RNIs). Activation of macrophages for tumor cytotoxicity can be achieved with various bacterial compounds, such as lipopolysaccharides (LPSs), muramyl-dipeptides, and lipopeptides. We studied the production and release of oxygen radicals, nitric oxide, and tumor necrosis factor alpha (TNF-alpha) by bone marrow-derived macrophages (BMDMs) of different mouse inbred strains after they were stimulated with the lipopeptide P3CSK4, a water-soluble synthetic analogue of the lipidated N terminus of bacterial lipoprotein. The lipopeptide was able to induce a strong, long lasting release of oxygen radicals in BALB/c mouse macrophages. Furthermore, it induced nitric oxide release from BMDMs of several mouse strains (BALB/c, C57Bl/6, C57Bl/10ScSn, Sv129, NMRI, and LPS-nonresponder C57Bl/10ScCr). Stimulation with P3CSK4 also resulted in comparable production of TNF-alpha in LPS-responder and nonresponder BMDMs from C57Bl/10ScSn mice and C57Bl/10ScCr mice, respectively. All three antitumoral mediators reached functional levels or concentrations as shown by the strong cytostatic/cytotoxic activity of lipopeptide-activated macrophages for the cell lines Abelson 8-1, M12.5/P815, and L929, which are sensitive to ROIs, nitric oxide, and TNF-alpha, respectively. We found that synthetic lipopeptides can induce the secretion of effective levels of soluble tumor-cytotoxic/cytostatic mediators in BMDMs of LPS-responsive and, of particular interest, also of LPS-unresponsive mice. This result could indicate that the highly effective bacterial-macrophage activators P3CSK4 and LPS use different receptors and/or different intracellular signal transduction pathways.
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Affiliation(s)
- S D Pfannes
- Institut für Molekulare Medizin und Zellforschung, AG Tumorimmunologie und Vakzineforschung, Medizinische Fakultät der Universität Freiburg, Germany.
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Bauer I, Körner S, Pawelke B, Al-Malaika S, Habicher W. Hydroperoxide decomposing ability and hydrolytic stability of organic phosphites containing hindered amine moieties (HALS-Phosphites). Polym Degrad Stab 1998. [DOI: 10.1016/s0141-3910(97)00276-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Körner S. Nährstoff- und Sauerstoffbilanz eines hochbelasteten Klärwerksableiters unter besonderer Berücksichtigung der submersen Makrophyten. ACTA ACUST UNITED AC 1997. [DOI: 10.1002/aheh.19970250106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Miesel R, Körner S, Haas R, Spinnler C, Ehrenfeld U, Weser U. Phagocytic response modifying reactivity of enzymatic cell wall digests of Nocardia opaca. Immunol Lett 1990; 26:31-6. [PMID: 2177449 DOI: 10.1016/0165-2478(90)90172-m] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Aqueous extracts (ENOCW) and enzymatic digests of purified Nocardia opaca cell wall fragments, virtually free of muramyl peptides, were monitored for their phagocytic response modifying reactivity on polymorphonuclear leucocytes, separated or unseparated in whole human blood. In the presence of ENOCW a 74% increased production of superoxide during the respiratory burst of TPA-activated polymorphonuclear leukocytes was observed, as compared to the unprimed control. Delipidation of this preparation resulted in a further increase in reactivity (144%). Even in the presence of whole human blood, as a model for competitive binding in biological fluids, an enhanced generation of superoxide by TPA activated blood phagocytes remained detectable. A 37-75% decreased phagocytic reactivity in samples of HIV-seropositive blood was considerably restored in the presence of ENOCW.
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Affiliation(s)
- R Miesel
- Anorganische Biochemie, Physiologisch-Chemisches Institut, Universität Tübingen, F.R.G
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Riffel B, Stöhr M, Körner S. Spinal and cortical evoked potentials following stimulation of the posterior tibial nerve in the diagnosis and localization of spinal cord diseases. Electroencephalogr Clin Neurophysiol 1984; 58:400-7. [PMID: 6208006 DOI: 10.1016/0013-4694(84)90136-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Evoked potentials from unilateral stimulation of the posterior tibial nerve at the ankle were recorded over the spinous processes L5, L1, C2 and Cz' in 30 normal subjects (Table Ia, b and c), 11 patients with multiple sclerosis (Table II) and 8 patients with a proven space-occupying spinal cord lesion (Table III). Delayed sensory conduction of both absolute latencies and side to side differences of P40 was seen in 91% of MS patients. Additional recording of spinal evoked potentials over L5, L1 and C2 did not significantly increase the percentage of abnormal responses. The spinal cord evoked responses therefore have their diagnostic importance in localizing the demyelinating process to the spinal or supraspinal section of the sensory pathway and in excluding peripherally delayed impulse conduction. The absolute latencies were within normal limits or only slightly delayed in the spinal tumor group. The interpeak latencies between the lumbar and the cervical or cortical responses showed less variability as compared to the absolute ones and revealed slight delays in some cases. Diagnostically more important seems the amplitude quotient between the cortical and the lumbar evoked potentials (P40/S response) which was below the normal range in two thirds of the tumor group patients.
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