1
|
Homann L, Rentschler M, Brenner E, Böhm K, Röcken M, Wieder T. IFN-γ and TNF Induce Senescence and a Distinct Senescence-Associated Secretory Phenotype in Melanoma. Cells 2022; 11:cells11091514. [PMID: 35563820 PMCID: PMC9103004 DOI: 10.3390/cells11091514] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [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: 03/24/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 12/13/2022] Open
Abstract
Immune checkpoint blockade (ICB) therapy is a central pillar of melanoma treatment leading to durable response rates. Important mechanisms of action of ICB therapy include disinhibition of CD4+ and CD8+ T cells. Stimulated CD4+ T helper 1 cells secrete the effector cytokines interferon-gamma (IFN-γ) and tumor necrosis factor alpha (TNF), which induce senescence in tumor cells. Besides being growth-arrested, senescent cells are metabolically active and secrete a large spectrum of factors, which are summarized as senescence-associated secretory phenotype (SASP). This secretome affects the tumor growth. Here, we compared the SASP of cytokine-induced senescent (CIS) cells with the SASP of therapy-induced senescent (TIS) cells. Therefore, we established in vitro models for CIS and TIS in melanoma. The human melanoma cell lines SK-MEL-28 and WM115 were treated with the cytokines IFN-γ and TNF as CIS, the chemotherapeutic agent doxorubicin, and the cell cycle inhibitor palbociclib as TIS. Then, we determined several senescence markers, i.e., growth arrest, p21 expression, and senescence-associated β-galactosidase (SA-β-gal) activity. For SASP analyses, we measured the regulation and secretion of several common SASP factors using qPCR arrays, protein arrays, and ELISA. Each treatment initiated a stable growth arrest, enhanced SA-β-gal activity, and—except palbociclib—increased the expression of p21. mRNA and protein analyses revealed that gene expression and secretion of SASP factors were severalfold stronger in CIS than in TIS. Finally, we showed that treatment with the conditioned media (CM) derived from cytokine- and palbociclib-treated cells induced senescence characteristics in melanoma cells. Thus, we conclude that senescence induction via cytokines may lead to self-sustaining senescence surveillance of melanoma.
Collapse
Affiliation(s)
- Lorenzo Homann
- Department of Dermatology, University of Tuebingen, 72076 Tuebingen, Germany; (M.R.); (E.B.); (K.B.); (M.R.)
- Correspondence: (L.H.); (T.W.); Tel.: +49-7071-2986865 (L.H.); +49-7071-2978240 (T.W.)
| | - Maximilian Rentschler
- Department of Dermatology, University of Tuebingen, 72076 Tuebingen, Germany; (M.R.); (E.B.); (K.B.); (M.R.)
- Institute of Physiology I, Department of Vegetative and Clinical Physiology, University of Tuebingen, 72074 Tuebingen, Germany
| | - Ellen Brenner
- Department of Dermatology, University of Tuebingen, 72076 Tuebingen, Germany; (M.R.); (E.B.); (K.B.); (M.R.)
| | - Katharina Böhm
- Department of Dermatology, University of Tuebingen, 72076 Tuebingen, Germany; (M.R.); (E.B.); (K.B.); (M.R.)
| | - Martin Röcken
- Department of Dermatology, University of Tuebingen, 72076 Tuebingen, Germany; (M.R.); (E.B.); (K.B.); (M.R.)
| | - Thomas Wieder
- Institute of Physiology I, Department of Vegetative and Clinical Physiology, University of Tuebingen, 72074 Tuebingen, Germany
- Correspondence: (L.H.); (T.W.); Tel.: +49-7071-2986865 (L.H.); +49-7071-2978240 (T.W.)
| |
Collapse
|
2
|
Homann L, Rentschler M, Brenner E, Böhm K, Weidemann S, Röcken M, Wieder T. 263 Therapy-induced senescence in melanoma cells is associated with a low proinflammatory secretome. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
3
|
Gassenmaier M, Rentschler M, Fehrenbacher B, Eigentler TK, Ikenberg K, Kosnopfel C, Sinnberg T, Niessner H, Bösmüller H, Wagner NB, Schaller M, Garbe C, Röcken M. Expression of DNA Methyltransferase 1 Is a Hallmark of Melanoma, Correlating with Proliferation and Response to B-Raf and Mitogen-Activated Protein Kinase Inhibition in Melanocytic Tumors. Am J Pathol 2020; 190:2155-2164. [PMID: 32679231 DOI: 10.1016/j.ajpath.2020.07.002] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 06/29/2020] [Accepted: 07/03/2020] [Indexed: 12/11/2022]
Abstract
Aberrant DNA methylation is an epigenetic hallmark of melanoma, but the expression of DNA methyltransferase (Dnmt)-1 in melanocytic tumors is unknown. Dnmt1 expression was analyzed in primary melanocytes, melanoma cell lines, and 83 melanocytic tumors, and its associations with proliferation, mutational status, and response to B-Raf and mitogen-activated protein kinase kinase (MEK) inhibition were explored. Dnmt1 expression was increased incrementally from nevi [mean fluorescence intensity (MFI), 48.1; interquartile range, 41.7 to 59.6] to primary melanomas (MFI, 68.8; interquartile range, 58.4 to 77.0) and metastatic melanomas (MFI, 87.5; interquartile range, 77.1 to 114.5) (P < 0.001). Dnmt1 expression was correlated with Ki-67 expression (Spearman correlation, 0.483; P < 0.001) and was independent of BRAF mutation status (P = 0.55). In BRAF-mutant melanoma, Dnmt1 was down-regulated during response to B-Raf and MEK inhibition and was again up-regulated on drug resistance in vitro and in vivo. Degradation of Dnmt1 by the histone deacetylase inhibitor suberoylanilide hydroxamic acid was associated with decreased cell viability in B-Raf inhibitor-sensitive and -resistant cell lines. This study demonstrates that Dnmt1 expression is correlated with proliferation in melanocytic tumors, is increased with melanoma progression, and is associated with response to B-Raf and MEK inhibition. Given its strong expression in metastatic melanoma, Dnmt1 may be a promising target for combined epigenetic and immunotherapy.
Collapse
Affiliation(s)
| | | | - Birgit Fehrenbacher
- Department of Dermatology, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Thomas K Eigentler
- Department of Dermatology, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Kristian Ikenberg
- Institute of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Corinna Kosnopfel
- Department of Dermatology, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Tobias Sinnberg
- Department of Dermatology, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Heike Niessner
- Department of Dermatology, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Hans Bösmüller
- Institute of Pathology, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Nikolaus B Wagner
- Department of Dermatology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Martin Schaller
- Department of Dermatology, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Claus Garbe
- Department of Dermatology, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Martin Röcken
- Department of Dermatology, Eberhard Karls University of Tübingen, Tübingen, Germany
| |
Collapse
|
4
|
Rentschler M, Chen Y, Pahl J, Soria-Martinez L, Braumüller H, Brenner E, Bischof O, Röcken M, Wieder T. Nuclear Translocation of Argonaute 2 in Cytokine-Induced Senescence. Cell Physiol Biochem 2018; 51:1103-1118. [PMID: 30476917 DOI: 10.1159/000495490] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 03/05/2018] [Accepted: 11/16/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Cellular senescence, or permanent growth arrest, is known as an effective tumor suppressor mechanism that can be induced by different stressors, such as oncogenes, chemotherapeutics or cytokine cocktails. Previous studies demonstrated that the growth-repressing state of oncogene-induced senescent cells depends on argonaute protein 2 (Ago2)-mediated transcriptional gene silencing and Ago2/Rb corepression of E2F-dependent cell cycle genes. Cytokine-induced senescence (CIS) likewise depends on activation of the p16Ink4a/Rb pathway, and consecutive inactivation of the E2F family of transcription factors. In the present study, we therefore analyzed the role of Ago2 in CIS. METHODS Human cancer cell lines were treated with interferon-gamma (IFN-γ) and tumor necrosis factor (TNF) to induce senescence. Senescence was determined by growth assays and measurement of senescence-associated β-galactosidase (SA-β-gal) activity, Ago2 translocation by Ago2/ Ki67 immunofluorescence staining and western blot analysis, and gene transcription by quantitative polymerase chain reaction (qPCR). RESULTS IFN-γ and TNF permanently stopped cell proliferation and time-dependently increased SA-β-gal activity. After 24 - 48 h of cytokine treatment, Ago2 translocated from the cytoplasm into the nucleus of Ki67-negative cells, an effect which was shown to be reversible. Importantly, the proinflammatory cytokine cocktail suppressed Ago2-regulated cell cycle control genes, and siRNA-mediated depletion of Ago2 interfered with cytokine-induced growth inhibition. CONCLUSION IFN-γ and TNF induce a stable cell cycle arrest of cancer cells that is accompanied by a fast nuclear Ago2 translocation and repression of Ago2-regulated cell cycle control genes. As Ago2 downregulation impairs cytokine-induced growth regulation, Ago2 may contribute to tissue homeostasis in human cancers.
Collapse
Affiliation(s)
- Maximilian Rentschler
- Department of Dermatology, University Medical Center Tübingen, Eberhard Karls University, Tübingen, Germany
| | - Yan Chen
- Department of Dermatology, University Medical Center Tübingen, Eberhard Karls University, Tübingen, Germany
| | - Jana Pahl
- Department of Dermatology, University Medical Center Tübingen, Eberhard Karls University, Tübingen, Germany
| | - Laura Soria-Martinez
- Department of Dermatology, University Medical Center Tübingen, Eberhard Karls University, Tübingen, Germany
| | - Heidi Braumüller
- Department of Dermatology, University Medical Center Tübingen, Eberhard Karls University, Tübingen, Germany
| | - Ellen Brenner
- Department of Dermatology, University Medical Center Tübingen, Eberhard Karls University, Tübingen, Germany
| | - Oliver Bischof
- Institut Pasteur, Nuclear Organisation and Oncogenesis Unit, Department of Cell Biology and Infection, Paris, France.,INSERM, U993, Paris, France.,Equipe Labellisée Fondation ARC pour la recherche sur le cancer, Paris, France
| | - Martin Röcken
- Department of Dermatology, University Medical Center Tübingen, Eberhard Karls University, Tübingen, Germany
| | - Thomas Wieder
- Department of Dermatology, University Medical Center Tübingen, Eberhard Karls University, Tübingen,
| |
Collapse
|
5
|
Yazdi AS, Barlin M, Böhm K, Gendrisch F, Ghorbanalipoor S, Häberle S, Hamel A, Hüning S, Hüttner C, Iwanova I, Kanaki T, Kimeswenger S, Lohmann N, Munir S, Muzumdar S, Pereira MP, Peking P, Plesser K, Rendon A, Rentschler M, Schlumprecht C, Smorodchenko A, Stock M, Tillmanns J, Uslu U, Ghoreschi K, Glatz M, Grabbe S, Kunz M, Ludwig R, Scharffetter-Kochanek K, Loser K. ADF Winter School-An exciting concept of the Arbeitsgemeinschaft Dermatologische Forschung to connect young scientists and clinician scientists in Dermatology at the top of Germany. Exp Dermatol 2016; 26:292-294. [PMID: 27808431 DOI: 10.1111/exd.13241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Amir S Yazdi
- Department of Dermatology, University of Tübingen, Tübingen, Germany.,CRC/TRR156 University of Heidelberg, Tübingen and Mainz, Germany
| | - Meltem Barlin
- Department of Dermatology, University of Cologne, Cologne, Germany
| | - Katharina Böhm
- Department of Dermatology, University of Tübingen, Tübingen, Germany
| | - Fabian Gendrisch
- Department of Dermatology, University of Freiburg, Freiburg, Germany
| | | | - Stefanie Häberle
- CRC/TRR156 University of Heidelberg, Tübingen and Mainz, Germany.,Department of Dermatology, University of Heidelberg, Heidelberg, Germany
| | - Annamarie Hamel
- Department of Dermatology, Technical University of Munich, Munich, Germany
| | | | - Clemens Hüttner
- University Hospital of Dermatology, University of Salzburg, Salzburg, Austria
| | - Irina Iwanova
- Department of Dermatology, University of Regensburg, Regensburg, Germany
| | - Theodora Kanaki
- Center for Dermatology and Immunology, Städtisches Klinikum Dessau, Dessau, Germany
| | | | - Nadine Lohmann
- Department of Dermatology, University of Leipzig, Leipzig, Germany
| | - Saira Munir
- Department of Dermatology and Allergic Diseases, University of Ulm, Ulm, Germany
| | - Sukalp Muzumdar
- Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | | | - Patricia Peking
- University Hospital of Dermatology, University of Salzburg, Salzburg, Austria
| | - Kristin Plesser
- Department of Dermatology, University of Düsseldorf, Düsseldorf, Germany
| | - Adriana Rendon
- CRC/TRR156 University of Heidelberg, Tübingen and Mainz, Germany.,Department of Dermatology, University of Heidelberg, Heidelberg, Germany
| | | | | | - Anna Smorodchenko
- Department of Dermatology and Allergy, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Martin Stock
- Department of Dermatology, University of Münster, Münster, Germany
| | - Jessica Tillmanns
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Ugur Uslu
- Department of Dermatology, University of Erlangen, Erlangen, Germany
| | - Kamran Ghoreschi
- CRC/TRR156 University of Heidelberg, Tübingen and Mainz, Germany.,Department of Dermatology, University of Cologne, Cologne, Germany
| | - Martin Glatz
- Department of Immunology, Universitätsspital Zürich, Zürich, Switzerland
| | - Stephan Grabbe
- CRC/TRR156 University of Heidelberg, Tübingen and Mainz, Germany.,Department of Dermatology, University of Mainz, Mainz, Germany
| | - Manfred Kunz
- Department of Dermatology, University of Leipzig, Leipzig, Germany
| | - Ralf Ludwig
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | | | - Karin Loser
- Department of Dermatology, University of Münster, Münster, Germany.,CRC1009 and Cells in Motion - Cluster of Excellence, University of Münster, Münster, Germany
| |
Collapse
|
6
|
|
7
|
Oleynikov D, Rentschler M, Hadzialic A, Dumpert J, Platt SR, Farritor S. Miniature robots can assist in Laparoscopic cholecystectomy. Surg Endosc 2005; 19:473-6. [PMID: 15742124 DOI: 10.1007/s00464-004-8918-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2004] [Accepted: 10/26/2004] [Indexed: 10/25/2022]
Abstract
Laparoscopy reduces patient trauma but eliminates the surgeon's ability to directly view and touch the surgical environment. Although current robot-assisted laparoscopy improves the surgeon's ability to manipulate and visualize the target organs, the instruments and cameras remain constrained by the entry incision. This limits tool tip orientation and optimal camera placement. This article focuses on developing miniature in vivo robots to assist surgeons during laparoscopic surgery by providing an enhanced field of view from multiple angles and dexterous manipulators not constrained by the abdominal wall fulcrum effect. Miniature camera robots were inserted through a small incision into the insufflated abdominal cavity of an anesthetized pig. Trocar insertion and other laparoscopic tool placements were then viewed with these robotic cameras. The miniature robots provided additional camera angles that improved surgical visualization during a cholecystectomy. These successful prototype trials have demonstrated that miniature in vivo robots can provide surgeons with additional visual information that can increase procedural safety.
Collapse
Affiliation(s)
- D Oleynikov
- University of Nebraska Medical Center, 983280 Nebraska Medical Center, Omaha, NE 68198-3280, USA.
| | | | | | | | | | | |
Collapse
|
8
|
Kotzerke J, Glatting G, Seitz U, Rentschler M, Neumaier B, Bunjes D, Duncker C, Dohr D, Bergmann L, Reske SN. Radioimmunotherapy for the intensification of conditioning before stem cell transplantation: differences in dosimetry and biokinetics of 188Re- and 99mTc-labeled anti-NCA-95 MAbs. J Nucl Med 2000; 41:531-7. [PMID: 10716329] [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: 02/15/2023] Open
Abstract
UNLABELLED A new concept is the intensification of preparative regimens for patients with advanced leukemia using monoclonal antibodies (MAbs) with an affinity for beta emitter-labeled bone marrow. 188Re is a high-energy beta emitter that has therapeutic promise. Our first aim was to clarify whether the therapeutic application of 188Re-MAb against nonspecific cross-reacting antigen 95 (NCA-95) can be predicted from biokinetic data derived from 99mTc-labeled NCA-95. Our second aim was to show that a radiation absorbed dose of > or =12 Gy in the bone marrow can be achieved using 188Re-MAb. METHODS Dosimetric data were obtained for both radiotracers from multiple planar whole-body scans (double-head gamma camera), blood samples, and urine measurements from 12 patients with advanced leukemia. Radiation absorbed doses were calculated using MIRDOSE 3 software. RESULTS Radiation absorbed doses to bone marrow, liver, spleen, lung, and kidney were 2.24, 0.50, 1.93, 0.05, and 0.90 mGy/MBq, respectively, using 99mTc-MAb and 1.45, 0.43, 1.32, 0.07, and 0.71 mGy/MBq, respectively, using 188Re-MAb. These differences were statistically significant for bone marrow, spleen, and kidney. The main differences were less accumulation of 188Re-MAb in bone marrow (31%+/-13% compared with 52%+/-13%) and faster elimination through urine (25%+/-3% compared with 15%+/-5% after 24 h). On the basis of these data, a mean marrow dose of 14+/-7 Gy was achieved in 12 patients suffering from leukemia after application of approximately 10+/-2 GBq 188Re-MAb. CONCLUSION Myeloablative radiation absorbed doses can easily be achieved using 188Re-MAb. 99mTc- and 188Re-MAb showed similar whole-body distributions. However, direct prediction of radiation absorbed doses from the 99mTc-MAb, assuming identical biokinetic behavior, is not valid for the 188Re-MAb in a single patient. Therefore, individual dosimetry using 188Re-MAb is needed to calculate therapeutic activity.
Collapse
Affiliation(s)
- J Kotzerke
- Department of Nuclear Medicine, University Ulm, Germany
| | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Schirrmeister H, Guhlmann A, Elsner K, Kotzerke J, Glatting G, Rentschler M, Neumaier B, Träger H, Nüssle K, Reske SN. Sensitivity in detecting osseous lesions depends on anatomic localization: planar bone scintigraphy versus 18F PET. J Nucl Med 1999; 40:1623-9. [PMID: 10520701] [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: 02/14/2023] Open
Abstract
UNLABELLED Radionuclide bone scanning (RNB) is considered to be the most practical screening technique for assessing the entire skeleton for skeletal metastases. However, RNB has been shown to be of lower sensitivity than MRI and CT in detecting osteolytic metastases. A prospective study was designed to evaluate the accuracy of planar RNB versus tomographic bone imaging with 18F-labeled NaF and PET (18F PET) in detecting osteolytic and osteoblastic metastases and its dependency on their anatomic localization. METHODS Forty-four patients with known prostate, lung or thyroid carcinoma were examined with both planar RNB and 18F PET. A panel of reference methods including MRI of the spine, 1311 scintigraphy, conventional radiography and spiral CT was used as the gold standard. RNB and 18F PET were compared by a lesion-by-lesion analysis using a five-point score for receiver operating characteristic (ROC) curve analysis. RESULTS 18F PET showed 96 metastases (67 of prostate carcinoma and 29 of lung or thyroid cancer), whereas RNB revealed 46 metastases (33 of prostate carcinoma and 13 of lung or thyroid cancer). All lesions found with RNB were also detected with 18F PET. Compared with 18F PET and the reference methods, RNB had a sensitivity of 82.8% in detecting malignant and benign osseous lesions in the skull, thorax and extremities and a sensitivity of 40% in the spine and pelvis. The area under the ROC curve was 0.99 for 18F PET and 0.64 for RNB. CONCLUSION 18F PET is more sensitive than RNB in detecting osseous lesions. With RNB, sensitivity in detecting osseous metastases is highly dependent on anatomic localization of these lesions, whereas detection rates of osteoblastic and osteolytic metastases are similar. Higher detection rates and more accurate differentiation between benign and malignant lesions with 18F PET suggest the use of 18F PET when possible.
Collapse
Affiliation(s)
- H Schirrmeister
- Department of Nuclear Medicine, University Hospital, Ulm, Germany
| | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Schirrmeister H, Kotzerke J, Rentschler M, Träger H, Fenchel S, Nüssle K, Diederichs CG, Reske SN. [Positron-emission tomography of the skeletal system using 18FNa: the incidence, pattern of the findings and distribution of benign changes]. ROFO-FORTSCHR RONTG 1998; 169:310-4. [PMID: 9779073 DOI: 10.1055/s-2007-1015095] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE We evaluated the frequency, distribution and appearance of benign lesions in 18F-PET scans. METHODS Between March 1996 and May 1997, 18F-PET scans were performed in 59 patients in addition to conventional planar bone scintigraphy. Eleven patients were subjected to additional SPECT imaging. The main indication was searching for bone metastases (58 pat.). The diagnosis was confirmed radiologically. RESULTS With 18F-PET in 39 patients (66.1%) 152 benign lesions, mostly located in the spine were detected. 99mTc bone scans revealed 45 lesions in 10 patients. Osteoarthritis of the intervertebral articulations (69%) or of the acromioclavicular joint (15%) were the most common reasons for degenerative lesions detected with 18F-PET. Osteophytes appeared as hot lesions located at two adjacent vertebral endplates. Osteoarthritis of the intervertebral articulations showed an enhanced tracer uptake at these localizations, whereas endplate fractures of the vertebral bodies appeared very typical; solitary fractures of the ribs could not be differentiated from metastases. Rare benign lesions were not studied. CONCLUSION Most of the degenerative lesions (84%) detected with 18F-PET had a very typical appearance and could be detected with the improved spatial resolution and advantages of a tomographic technique. 18F-PET had an increased accuracy in detecting degenerative bone lesions.
Collapse
|
11
|
Kotzerke J, Fenchel S, Guhlmann A, Stabin M, Rentschler M, Knapp FF, Reske SN. Pharmacokinetics of 99Tcm-pertechnetate and 188Re-perrhenate after oral administration of perchlorate: option for subsequent care after the use of liquid 188Re in a balloon catheter. Nucl Med Commun 1998; 19:795-801. [PMID: 9751935 DOI: 10.1097/00006231-199808000-00011] [Citation(s) in RCA: 34] [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] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Radioactive wires and other linear sources are currently being used in clinical trials as endovascular brachytherapy to prevent restenosis after percutaneous transluminal coronary angioplasty. A new concept is the use of a liquid-filled balloon containing a beta-emitting radioisotope. A major advantage is optimal delivery of the radioactivity to the vessel wall. Rhenium-188 (188Re) is a high-energy beta-emitter that is routinely available from a 188W/188Re generator in liquid form. Since 188Re-perrhenate could be released in the unlikely event of balloon rupture, we investigated whether, in analogy to pertechnetate, subsequent use of perchlorate can reduce the uptake of perrhenate in the thyroid. We performed static (n = 9) and dynamic (n = 11) thyroid scintigraphy with 99Tcm-pertechnetate to estimate the overall reduction in activity within 30 min and the washout from the thyroid after oral administration of 600 mg perchlorate (T1/2). In two patients, 188Re was injected to estimate the whole-body distribution and the discharge of thyroid activity after perchlorate use. Based on MIRD Dose Estimate Report No. 8 (valid for 99Tcm-pertechnetate), the radiation burden was calculated for intravenous administration of 188Re and competitive blocking with perchlorate. In 20 patients, 99Tcm uptake by the thyroid was reduced by 85% within 30 min by perchlorate. The mean (+/- S.D.) washout rate (T1/2) was 8 +/- 2 min in 11 patients. Perrhenate showed a whole-body distribution similar to that of pertechnetate and the thyroid activity could be displaced (T1/2 = 6.3 and 9.3 min, respectively) by oral administration of perchlorate, with reductions in uptake of 83% and 75% within 30 min, respectively. Whole-body scanning demonstrated no regional accumulation of 188Re-perrhenate with excretion by urine. Dose estimates gave an effective dose equivalent of 0.42 mSv MBq-1, which decreased to 0.16 mSv MBq-1 after perchlorate blocking. 188Re has favourable properties for endovascular brachytherapy via a balloon catheter and, in the unlikely event of balloon rupture, whole-body radiation can be reduced to 38% by subsequent oral administration of perchlorate.
Collapse
Affiliation(s)
- J Kotzerke
- Nuklearmedizin (Radiologie III), Universität Ulm, Germany
| | | | | | | | | | | | | |
Collapse
|
12
|
Schirrmeister H, Rentschler M, Kotzerke J, Diederichs CG, Reske SN. [Imaging of the normal skeletal system with 18F Na-PET compared with conventional skeletal scintigraphy using Tc99m-MDP]. ROFO-FORTSCHR RONTG 1998; 168:451-6. [PMID: 9617361 DOI: 10.1055/s-2007-1015161] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE We evaluated the feasibility of 18 Fluoride Positron Emission Tomography (18F-PET), investigated the characteristics appearance of bony structures, and compared the quality of 18F-PET images with conventional bone scans (BS). METHOD 18F-PET scans were performed in 59 patients additional to conventional bone scintigraphy. RESULTS Even very small details in the spine like the spinous and transverse processes were clearly visible with 18F-PET. Only half of these structures were visualised with BS. When visualising the vertebral bodies of the first rib from the clavicles and the twelfth rib from the kidneys, we arrived at similar results. Hot spots in the skull or at the manubriosternal joint were observed in 29% of the patients without any evidence of trauma, degeneration or metastasis. CONCLUSION 18F-PET shows more details of the skeleton compared to BS. Some hot spots not occurring with BS must be regarded as physiological.
Collapse
|
13
|
Kotzerke J, Rentschler M, Glatting G, Schneider E, Stabin M, Knapp FF, Reske SN. [Dosimetry fundamentals of endovascular therapy using Re-188 for the prevention of restenosis after angioplasty]. Nuklearmedizin 1998; 37:68-72. [PMID: 9547753] [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: 02/07/2023]
Abstract
AIM Various radionuclides can be used for endovascular brachytherapy. A new concept is to inflate the balloon of a dilatation catheter with a radioactive solution. Re-188 can be eluted from a generator system and is available daily. The aim of this study was to obtain dosimetric data for this radionuclide. METHODS The dose decrease of Re-188 was calculated and measured with a TLD-system radial to a balloon catheter typically used in cardiology (diameter: 3 mm, length: 20 mm). RESULTS Using a specific activity of 370 MBq/ml a dose of 0.3 Gy could be achieved within 1 min in a TLD in contact with the balloon. Paired TLDs differed about 3%. A fast dose reduction of 50% and 10% were stated within 0.5 mm and 2.5 mm, respectively. Calculated and measured values were in good agreement. The data are comparable to those known for Y-90. CONCLUSION Calculations of dose distribution are consistent with TLD measurements of Re-188. Using a specific activity of 1.85 GBq/ml, a dose of 10-15 Gy at the coronary artery wall can be achieved within 2-3 min. Compared to radioactive stents or wires the use of this liquid beta-emitter is a simple alternative for prevention of the restenosis following the angioplasty.
Collapse
Affiliation(s)
- J Kotzerke
- Radiologie III (Nuklearmedizin), Universität Ulm, Germany
| | | | | | | | | | | | | |
Collapse
|
14
|
Doerr HW, Rentschler M, Scheifler G. Serologic detection of active infections with human herpes viruses (CMV, EBV, HSV, VZV): diagnostic potential of IgA class and IgG subclass-specific antibodies. Infection 1987; 15:93-8. [PMID: 3036714 DOI: 10.1007/bf01650204] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In 175 sera from healthy persons as well as those suffering from primary or secondary herpes virus infections/reactivations, serum antibodies were assessed by an indirect ELISA in the immunoglobulin classes A, G and M and the subclasses G1-4, using carrier-fixed antigens (CMV, VZV, HSV) and monoclonal tracer antibodies. In a similar way EBV-specific antibodies were tested by an indirect IFT. Only IgG1 antibodies were detectable in nearly all persons. Virus-specific IgA and IgG3 may support conventional serological methods (IgM, IgG) indicating recent infection/reactivation with VZV, EBV and possibly CMV. Furthermore, differentiation of primary and secondary CMV and VZV infection was possible in some cases, when IgG3 was detectable before IgG1 in subsequent blood specimens. Recurrent herpes lesions could not be diagnosed serologically.
Collapse
|