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Schloissnig S, Pani S, Rodriguez-Martin B, Ebler J, Hain C, Tsapalou V, Söylev A, Hüther P, Ashraf H, Prodanov T, Asparuhova M, Hunt S, Rausch T, Marschall T, Korbel JO. Long-read sequencing and structural variant characterization in 1,019 samples from the 1000 Genomes Project. bioRxiv 2024:2024.04.18.590093. [PMID: 38659906 PMCID: PMC11042266 DOI: 10.1101/2024.04.18.590093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Structural variants (SVs) contribute significantly to human genetic diversity and disease 1-4 . Previously, SVs have remained incompletely resolved by population genomics, with short-read sequencing facing limitations in capturing the whole spectrum of SVs at nucleotide resolution 5-7 . Here we leveraged nanopore sequencing 8 to construct an intermediate coverage resource of 1,019 long-read genomes sampled within 26 human populations from the 1000 Genomes Project. By integrating linear and graph-based approaches for SV analysis via pangenome graph-augmentation, we uncover 167,291 sequence-resolved SVs in these samples, considerably advancing SV characterization compared to population-wide short-read sequencing studies 3,4 . Our analysis details diverse SV classes-deletions, duplications, insertions, and inversions-at population-scale. LINE-1 and SVA retrotransposition activities frequently mediate transductions 9,10 of unique sequences, with both mobile element classes transducing sequences at either the 3'- or 5'-end, depending on the source element locus. Furthermore, analyses of SV breakpoint junctions suggest a continuum of homology-mediated rearrangement processes are integral to SV formation, and highlight evidence for SV recurrence involving repeat sequences. Our open-access dataset underscores the transformative impact of long-read sequencing in advancing the characterisation of polymorphic genomic architectures, and provides a resource for guiding variant prioritisation in future long-read sequencing-based disease studies.
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Shao S, Scholtz LU, Gendreizig S, Martínez-Ruiz L, Florido J, Escames G, Schürmann M, Hain C, Hose L, Mentz A, Schmidt P, Wang M, Goon P, Wehmeier M, Brasch F, Kalinowski J, Oppel F, Sudhoff H. Primary head and neck cancer cell cultures are susceptible to proliferation of Epstein-Barr virus infected lymphocytes. BMC Cancer 2023; 23:47. [PMID: 36639629 PMCID: PMC9840248 DOI: 10.1186/s12885-022-10481-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 12/23/2022] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND New concepts for a more effective anti-cancer therapy are urgently needed. Experimental flaws represent a major counter player of this development and lead to inaccurate and unreproducible data as well as unsuccessful translation of research approaches into clinics. In a previous study we have created epithelial cell cultures from head and neck squamous cell carcinoma (HNSCC) tissue. METHODS We characterize primary cell populations isolated from human papillomavirus positive HNSCC tissue for their marker expression by RT-qPCR, flow cytometry, and immunofluorescence staining. Their sensitivity to MDM2-inhibition was measured using cell viability assays. RESULTS Primary HNSCC cell cultures showed the delayed formation of spheroids at higher passages. These spheroids mimicked the morphology and growth characteristics of other established HNSCC spheroid models. However, expression of epithelial and mesenchymal markers could not be detected in these cells despite the presence of the HNSCC stem cell marker aldehyde dehydrogenase 1 family member A1. Instead, strong expression of B- and T-lymphocytes markers was observed. Flow cytometry analysis revealed a heterogeneous mixture of CD3 + /CD25 + T-lymphocytes and CD19 + B-lymphocytes at a ratio of 4:1 at passage 5 and transformed lymphocytes at late passages (≥ passage 12) with CD45 + CD19 + CD20 + , of which around 10 to 20% were CD3 + CD25 + CD56 + . Interestingly, the whole population was FOXP3-positive indicative of regulatory B-cells (Bregs). Expression of transcripts specific for the Epstein-Barr-virus (EBV) was detected to increase in these spheroid cells along late passages, and this population was vulnerable to MDM2 inhibition. HPV + HNSCC cells but not EBV + lymphocytes were detected to engraft into immunodeficient mice. CONCLUSIONS In this study we present a primary cell culture of EBV-infected tumor-infiltrating B-lymphocytes, which could be used to study the role of these cells in tumor biology in future research projects. Moreover, by describing the detailed characteristics of these cells, we aim to caution other researchers in the HNSCC field to test for EBV-infected lymphocyte contaminations in primary cell cultures ahead of further experiments. Especially researchers who are interested in TIL-based adopted immunotherapy should exclude these cells in their primary tumor models, e.g. by MDM2-inhibitor treatment. BI-12-derived xenograft tumors represent a suitable model for in vivo targeting studies.
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Affiliation(s)
- Senyao Shao
- grid.7491.b0000 0001 0944 9128Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Klinikum Bielefeld, Teutoburger Str. 50, 33604 Bielefeld, Germany
| | - Lars Uwe Scholtz
- grid.7491.b0000 0001 0944 9128Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Klinikum Bielefeld, Teutoburger Str. 50, 33604 Bielefeld, Germany
| | - Sarah Gendreizig
- grid.7491.b0000 0001 0944 9128Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Klinikum Bielefeld, Teutoburger Str. 50, 33604 Bielefeld, Germany
| | - Laura Martínez-Ruiz
- grid.4489.10000000121678994Biomedical Research Center, Health Sciences Technology Park, University of Granada, 18016 Granada, Spain ,grid.4489.10000000121678994Department of Physiology, Faculty of Medicine, University of Granada, 18016 Granada, Spain ,grid.459499.cCIBERFES, Ibs. Granada, San Cecilio University Hospital, 18016 Granada, Spain
| | - Javier Florido
- grid.4489.10000000121678994Biomedical Research Center, Health Sciences Technology Park, University of Granada, 18016 Granada, Spain ,grid.4489.10000000121678994Department of Physiology, Faculty of Medicine, University of Granada, 18016 Granada, Spain ,grid.459499.cCIBERFES, Ibs. Granada, San Cecilio University Hospital, 18016 Granada, Spain
| | - Germaine Escames
- grid.4489.10000000121678994Biomedical Research Center, Health Sciences Technology Park, University of Granada, 18016 Granada, Spain ,grid.4489.10000000121678994Department of Physiology, Faculty of Medicine, University of Granada, 18016 Granada, Spain ,grid.459499.cCIBERFES, Ibs. Granada, San Cecilio University Hospital, 18016 Granada, Spain
| | - Matthias Schürmann
- grid.7491.b0000 0001 0944 9128Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Klinikum Bielefeld, Teutoburger Str. 50, 33604 Bielefeld, Germany
| | - Carsten Hain
- grid.7491.b0000 0001 0944 9128Center for Biotechnology (CeBiTec), Universität Bielefeld, Bielefeld, Germany
| | - Leonie Hose
- grid.7491.b0000 0001 0944 9128Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Klinikum Bielefeld, Teutoburger Str. 50, 33604 Bielefeld, Germany ,Department of Pathology, Klinikum Bielefeld, Teutoburger Str. 50, 33604 Bielefeld, Germany
| | - Almut Mentz
- Department of Pathology, Klinikum Bielefeld, Teutoburger Str. 50, 33604 Bielefeld, Germany
| | - Pascal Schmidt
- grid.7491.b0000 0001 0944 9128Center for Biotechnology (CeBiTec), Universität Bielefeld, Bielefeld, Germany
| | - Menghang Wang
- grid.7491.b0000 0001 0944 9128Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Klinikum Bielefeld, Teutoburger Str. 50, 33604 Bielefeld, Germany ,grid.11135.370000 0001 2256 9319Department of Otolaryngology Head and Neck Surgery, Peking University International Hospital, Peking University, Beijing, 102206 China
| | - Peter Goon
- grid.7491.b0000 0001 0944 9128Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Klinikum Bielefeld, Teutoburger Str. 50, 33604 Bielefeld, Germany
| | - Michael Wehmeier
- Department of Laboratory Medicine, Klinikum Bielefeld, Teutoburger Str. 50, 33604 Bielefeld, Germany
| | - Frank Brasch
- Department of Pathology, Klinikum Bielefeld, Teutoburger Str. 50, 33604 Bielefeld, Germany
| | - Jörn Kalinowski
- grid.7491.b0000 0001 0944 9128Center for Biotechnology (CeBiTec), Universität Bielefeld, Bielefeld, Germany
| | - Felix Oppel
- grid.7491.b0000 0001 0944 9128Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Klinikum Bielefeld, Teutoburger Str. 50, 33604 Bielefeld, Germany
| | - Holger Sudhoff
- grid.7491.b0000 0001 0944 9128Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Klinikum Bielefeld, Teutoburger Str. 50, 33604 Bielefeld, Germany
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Stadler R, Hain C. [New insights into the pathogenesis and molecular understanding of cutaneous T-cell lymphomas]. Dermatologie (Heidelb) 2022; 73:765-771. [PMID: 35960311 DOI: 10.1007/s00105-022-05047-9] [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] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
The pathogenesis of cutaneous T‑cell lymphomas (CTCL) is still an enigma. Therefore, extensive translational research efforts have been undertaken in recent years to gain further clinical and molecular insights. There is increasing evidence that the different clinical appearance of the CTCL subtypes derives from the assumption that they develop from different skin subpopulations of T cells. Detection and quantification of the malignant T‑cell clones is crucial for the diagnosis and prognosis of CTCL. Numerous recurrent mutant cellular signalling pathways have been found in recent years. This includes the JAK-STAT, NFκB, T‑cell receptor and MAP kinase signalling pathways, as well as cell cycle control and epigenetics. The most recent analyses imply a tumour evolution model with initial copy number variation, like amplification or deletions of specific DNA fragments (CNVs) and only subsequent later single nucleotide variations (SNVs). The crucial question, however, is which CNVs are sufficient to initiate general tumourigenesis? The challenge is to identify possible driver genes. Increasing molecular understanding in CTCL will include new breakthrough therapeutic options in the near future.
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Affiliation(s)
- Rudolf Stadler
- Universitätsklinik für Dermatologie, Johannes Wesling Klinikum Minden, UK RUB, Hans-Nolte-Str. 1, 32429, Minden, Deutschland.
| | - Carsten Hain
- Zentrum für Biotechnologie (CeBiTec), Universität Bielefeld, Bielefeld, Deutschland
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Hain C, Cieslak C, Stadler R, Kalinowski J. Structural variations in low tumor fraction mycosis fungoides unraveled by nanopore sequencing. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)00614-1] [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: 11/03/2022]
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Oppel F, Shao S, Gendreizig S, Kühnel P, Przybycin V, Hain C, Schmidt P, Schürmann M, Goon P, Niehaus K, Kalinowski J, Sudhoff H. Abstract 111: Head and neck cancer cells can differentiate and resemble their tissue of origin. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-111] [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: 11/16/2022]
Abstract
Abstract
Head and neck squamous cell carcinoma (HNSCC) is a highly malignant disease with a mortality rate of about 50%. It represents the sixth most common type of malignant tumor in the world. Risk factors include tobacco and alcohol usage and infection with the human papilloma virus (HPV). HPV-negative HNSCCs frequently display areas of cornification evident by keratin pearls in the tumor tissue. Cornification represents a natural differentiation path of keratinocytes in the normal epidermis and oral mucosa. To investigate the mechanisms of HNSCC cell differentiation we have established spheroid cell cultures from patient-derived HNSCC and parotid gland adenoid cystic carcinoma (ACC) tissue that grow in suspension under serum-free conditions. The use of a specific differentiation medium induced striking adhesion, loss of proliferation, and differentiation in tumor cells. Spheroid cells grew as single cell clones under serum-free conditions with a cloning efficiency of 40-60%, which was fully diminished under differentiating conditions. HNSCC cells cornified as indicated by the formation of lamellar bodies in the cytoplasm of adherent cells and an upregulation of cornification markers SPRR3 and involucrin. ACC cells upregulated parotid gland differentiation markers including α-amylase. RNA-seq analysis in HNSCC cells confirmed an upregulation of signaling pathways associated with cornification and epithelial cell differentiation. Conversely, pathways regulating the three-dimensional organization of the genome were downregulated upon differentiation. This was accompanied by the formation of ATRX-positive heterochromatin foci in the nucleus of differentiated ACC and HNSCC cells resembling those previously described to arise during therapy-induced senescence. Moreover, gas chromatography mass spectrometry analysis revealed a lack of essential amino acids including leucine to be implicated in the differentiation process. Altogether, our spheroid model of HNSCC and ACC cells is suitable to analyze the mechanisms underlying tumor cell differentiation and might lead to new therapeutic approaches that can drive long-term repopulating HNSCC and ACC cells into differentiation.
Citation Format: Felix Oppel, Senyao Shao, Sarah Gendreizig, Philipp Kühnel, Vivien Przybycin, Carsten Hain, Pascal Schmidt, Matthias Schürmann, Peter Goon, Karsten Niehaus, Jörn Kalinowski, Holger Sudhoff. Head and neck cancer cells can differentiate and resemble their tissue of origin [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 111.
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Affiliation(s)
- Felix Oppel
- 1University Hospital OWL of Bielefeld University, Bielefeld, Germany
| | - Senyao Shao
- 1University Hospital OWL of Bielefeld University, Bielefeld, Germany
| | - Sarah Gendreizig
- 1University Hospital OWL of Bielefeld University, Bielefeld, Germany
| | - Philipp Kühnel
- 1University Hospital OWL of Bielefeld University, Bielefeld, Germany
| | - Vivien Przybycin
- 1University Hospital OWL of Bielefeld University, Bielefeld, Germany
| | - Carsten Hain
- 2Center for Biotechnology (CeBiTec), Bielefeld University, Bielefeld, Germany
| | - Pascal Schmidt
- 2Center for Biotechnology (CeBiTec), Bielefeld University, Bielefeld, Germany
| | | | - Peter Goon
- 1University Hospital OWL of Bielefeld University, Bielefeld, Germany
| | - Karsten Niehaus
- 2Center for Biotechnology (CeBiTec), Bielefeld University, Bielefeld, Germany
| | - Jörn Kalinowski
- 2Center for Biotechnology (CeBiTec), Bielefeld University, Bielefeld, Germany
| | - Holger Sudhoff
- 1University Hospital OWL of Bielefeld University, Bielefeld, Germany
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Hain C, Stadler R, Kalinowski J. Sézary Syndrome Shows Whole Genome Duplication as a Late Event in Tumor Evolution. J Invest Dermatol 2021; 142:1755-1758. [PMID: 34808235 DOI: 10.1016/j.jid.2021.11.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 11/04/2021] [Accepted: 11/04/2021] [Indexed: 11/18/2022]
Affiliation(s)
- Carsten Hain
- Center for Biotechnology (CeBiTec), Bielefeld University, Bielefeld, Germany
| | - Rudolf Stadler
- University Clinic for Dermatology, Johannes Wesling Medical Centre, UKRUB, University of Bochum, Minden, Germany
| | - Jörn Kalinowski
- Center for Biotechnology (CeBiTec), Bielefeld University, Bielefeld, Germany.
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Brodehl A, Hain C, Flottmann F, Ratnavadivel S, Gaertner A, Klauke B, Kalinowski J, Körperich H, Gummert J, Paluszkiewicz L, Deutsch MA, Milting H. The Desmin Mutation DES-c.735G>C Causes Severe Restrictive Cardiomyopathy by Inducing In-Frame Skipping of Exon-3. Biomedicines 2021; 9:biomedicines9101400. [PMID: 34680517 PMCID: PMC8533191 DOI: 10.3390/biomedicines9101400] [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: 09/13/2021] [Revised: 10/01/2021] [Accepted: 10/02/2021] [Indexed: 02/02/2023] Open
Abstract
Currently, little is known about the genetic background of restrictive cardiomyopathy (RCM). Herein, we screened an index patient with RCM in combination with atrial fibrillation using a next generation sequencing (NGS) approach and identified the heterozygous mutation DES-c.735G>C. As DES-c.735G>C affects the last base pair of exon-3, it is unknown whether putative missense or splice site mutations are caused. Therefore, we applied nanopore amplicon sequencing revealing the expression of a transcript without exon-3 in the explanted myocardial tissue of the index patient. Western blot analysis verified this finding at the protein level. In addition, we performed cell culture experiments revealing an abnormal cytoplasmic aggregation of the truncated desmin form (p.D214-E245del) but not of the missense variant (p.E245D). In conclusion, we show that DES-c.735G>C causes a splicing defect leading to exon-3 skipping of the DES gene. DES-c.735G>C can be classified as a pathogenic mutation associated with RCM and atrial fibrillation. In the future, this finding might have relevance for the genetic understanding of similar cases.
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Affiliation(s)
- Andreas Brodehl
- Heart and Diabetes Center NRW, Erich and Hanna Klessmann Institute, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany; (F.F.); (S.R.); (A.G.); (B.K.); (J.G.)
- Correspondence: (A.B.); (H.M.); Tel.: +49-(0)5731-973530 (A.B.); +49-(0)5731-973510 (H.M.)
| | - Carsten Hain
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, D-33615 Bielefeld, Germany; (C.H.); (J.K.)
| | - Franziska Flottmann
- Heart and Diabetes Center NRW, Erich and Hanna Klessmann Institute, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany; (F.F.); (S.R.); (A.G.); (B.K.); (J.G.)
| | - Sandra Ratnavadivel
- Heart and Diabetes Center NRW, Erich and Hanna Klessmann Institute, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany; (F.F.); (S.R.); (A.G.); (B.K.); (J.G.)
| | - Anna Gaertner
- Heart and Diabetes Center NRW, Erich and Hanna Klessmann Institute, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany; (F.F.); (S.R.); (A.G.); (B.K.); (J.G.)
| | - Bärbel Klauke
- Heart and Diabetes Center NRW, Erich and Hanna Klessmann Institute, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany; (F.F.); (S.R.); (A.G.); (B.K.); (J.G.)
- Clinic for General and Interventional Cardiology/Angiology, Heart and Diabetes Center NRW, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany
| | - Jörn Kalinowski
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, D-33615 Bielefeld, Germany; (C.H.); (J.K.)
| | - Hermann Körperich
- Heart and Diabetes Center NRW, Institute for Radiology, Nuclear Medicine and Molecular Imaging, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany;
| | - Jan Gummert
- Heart and Diabetes Center NRW, Erich and Hanna Klessmann Institute, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany; (F.F.); (S.R.); (A.G.); (B.K.); (J.G.)
- Heart and Diabetes Center NRW, Department of Thoracic and Cardiovascular Surgery, University Hospital Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany; (L.P.); (M.-A.D.)
| | - Lech Paluszkiewicz
- Heart and Diabetes Center NRW, Department of Thoracic and Cardiovascular Surgery, University Hospital Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany; (L.P.); (M.-A.D.)
| | - Marcus-André Deutsch
- Heart and Diabetes Center NRW, Department of Thoracic and Cardiovascular Surgery, University Hospital Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany; (L.P.); (M.-A.D.)
| | - Hendrik Milting
- Heart and Diabetes Center NRW, Erich and Hanna Klessmann Institute, University Hospital of the Ruhr-University Bochum, Georgstrasse 11, D-32545 Bad Oeynhausen, Germany; (F.F.); (S.R.); (A.G.); (B.K.); (J.G.)
- Correspondence: (A.B.); (H.M.); Tel.: +49-(0)5731-973530 (A.B.); +49-(0)5731-973510 (H.M.)
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Schaffert L, Ruwe M, Milse J, Hanuschka K, Ortseifen V, Droste J, Brandt D, Schlüter L, Kutter Y, Vinke S, Viehöfer P, Jacob L, Lübke NC, Schulte-Berndt E, Hain C, Linder M, Schmidt P, Wollenschläger L, Luttermann T, Thieme E, Hassa J, Haak M, Wittchen M, Mentz A, Persicke M, Busche T, Rückert C. Classification of three corynebacterial strains isolated from a small paddock in North Rhine-Westphalia: proposal of Corynebacterium kalinowskii sp. nov., Corynebacterium comes sp. nov. and Corynebacterium occultum sp. nov. Int J Syst Evol Microbiol 2021; 71. [PMID: 34342562 DOI: 10.1099/ijsem.0.004933] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Three novel corynebacterial species were isolated from soil sampled at a paddock in Vilsendorf, North Rhine-Westphalia, Germany. The strains were coccoid or irregular rod-shaped, catalase-positive and pale white to yellow-orange in colour. By whole genome sequencing and comparison of the 16S rRNA genes as well as the whole genome structure, it was shown that all three strains represent novel species of the family Corynebacteriaceae, order Corynebacteriales, class Actinobacteria. This project describes the isolation, identification, sequencing, and phenotypic characterization of the three novel Corynebacterium species. We propose the names Corynebacterium kalinowskii sp. nov. (DSM 110639T=LMG 31801T), Corynebacterium comes sp. nov. (DSM 110640T=LMG 31802T), and Corynebacterium occultum sp. nov. (DSM 110642T=LMG 31803T).
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Affiliation(s)
- Lena Schaffert
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Matthias Ruwe
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Johanna Milse
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Katharina Hanuschka
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Vera Ortseifen
- Senior Research Group in Genome Research of Industrial Microorganisms, Center for Biotechnology, Bielefeld University, Bielefeld, Germany.,Proteome and Metabolome Research, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Julian Droste
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - David Brandt
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Laura Schlüter
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Yvonne Kutter
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Svenja Vinke
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Prisca Viehöfer
- Genetics and Genomics of Plants, Faculty of Biology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Lucas Jacob
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Nils-Christian Lübke
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Eva Schulte-Berndt
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Carsten Hain
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Marten Linder
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Pascal Schmidt
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Lars Wollenschläger
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Tobias Luttermann
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Eric Thieme
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Julia Hassa
- Senior Research Group in Genome Research of Industrial Microorganisms, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Markus Haak
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Manuel Wittchen
- Senior Research Group in Genome Research of Industrial Microorganisms, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Almut Mentz
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Marcus Persicke
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Tobias Busche
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Christian Rückert
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
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Stadler R, Hain C, Cieslak C, Stranzenbach R. Molecular pathogenesis of cutaneous lymphoma-Future directions. Exp Dermatol 2020; 29:1062-1068. [PMID: 33090576 DOI: 10.1111/exd.14211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 06/10/2020] [Revised: 09/18/2020] [Accepted: 10/01/2020] [Indexed: 12/18/2022]
Abstract
The pathogenesis of cutaneous T-cell lymphomas is not clear. In recent years, the genetic changes in CTCL were explored. The detected mutations showed a great deal of heterogeneity between individual patients. The studies documented various copy number variations (CNV) and single nucleotide variations (SNV) in multiple genes involved in multiple signalling pathways. Recurrently mutated signalling pathways include JAK-STAT, MAPK, T-cell receptor, TNF receptor and NFκB signalling. In the period between 2018 and today, additional studies towards the genetic changes in CTCL were carried out. Genetic changes in gamma delta T-cell lymphoma are also shown in genes of the JAK-STAT, MAPK, MYC and chromatin signalling pathways. These studies might indicate a shift away from targeted sequencing approaches towards whole-genome sequencing. This approach demands additional resources in terms of funding but has the advantage of finding mutations in non-coding regions. These mutations were neglected for a long time, but as shown in contemporary research these regions harbour highly recurrent mutations affecting gene expression and regulation. Nevertheless, the detection of specific molecular changes in known pathways enables considerations for targeted therapies.
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Affiliation(s)
- Rudolf Stadler
- University Clinic for Dermatology, Johannes Wesling Medical Centre, UKRUB, University of Bochum, Minden, Germany
| | - Carsten Hain
- Center of Biotechnology, University of Bielefeld, Bielefeld, Germany
| | - Cassandra Cieslak
- University Clinic for Dermatology, Johannes Wesling Medical Centre, UKRUB, University of Bochum, Minden, Germany
| | - René Stranzenbach
- University Clinic for Dermatology, Johannes Wesling Medical Centre, UKRUB, University of Bochum, Minden, Germany
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10
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Enenkel M, Brown ME, Vogt JV, McCarty JL, Reid Bell A, Guha-Sapir D, Dorigo W, Vasilaky K, Svoboda M, Bonifacio R, Anderson M, Funk C, Osgood D, Hain C, Vinck P. Why predict climate hazards if we need to understand impacts? Putting humans back into the drought equation. Clim Change 2020; 162:1161-1176. [PMID: 33071396 PMCID: PMC7545810 DOI: 10.1007/s10584-020-02878-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 09/25/2020] [Indexed: 06/01/2023]
Abstract
Virtually all climate monitoring and forecasting efforts concentrate on hazards rather than on impacts, while the latter are a priority for planning emergency activities and for the evaluation of mitigation strategies. Effective disaster risk management strategies need to consider the prevailing "human terrain" to predict who is at risk and how communities will be affected. There has been little effort to align the spatiotemporal granularity of socioeconomic assessments with the granularity of weather or climate monitoring. The lack of a high-resolution socioeconomic baseline leaves methodical approaches like machine learning virtually untapped for pattern recognition of extreme climate impacts on livelihood conditions. While the request for "better" socioeconomic data is not new, we highlight the need to collect and analyze environmental and socioeconomic data together and discuss novel strategies for coordinated data collection via mobile technologies from a drought risk management perspective. A better temporal, spatial, and contextual understanding of socioeconomic impacts of extreme climate conditions will help to establish complex causal pathways and quantitative proof about climate-attributable livelihood impacts. Such considerations are particularly important in the context of the latest big data-driven initiatives, such as the World Bank's Famine Action Mechanism (FAM).
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Affiliation(s)
- M. Enenkel
- Harvard Humanitarian Initiative, Harvard University, Cambridge, MA USA
- World Bank Disaster Risk Financing and Insurance (DRFI) Program, Washington, DC USA
| | - M. E. Brown
- Department of Geographical Sciences, University of Maryland, College Park, MD USA
| | - J. V. Vogt
- European Commission, Joint Research Center, Ispra, VA Italy
| | - J. L. McCarty
- Department of Geography, Miami University, Oxford, OH USA
| | - A. Reid Bell
- Department of Environmental Studies, New York University, New York, USA
| | - D. Guha-Sapir
- Centre for Research on the Epidemiology of Disasters, Institute for Health and Society, Université Catholique de Louvain, Brussels, Belgium
| | - W. Dorigo
- Department of Geodesy and Geoinformation, Vienna University of Technology, Vienna, Austria
| | - K. Vasilaky
- Department of Economics, Orfalea College of Business, California Polytechnic University, San Luis Obispo, CA USA
| | - M. Svoboda
- US National Drought Mitigation Center, University of Nebraska-Lincoln, Lincoln, USA
| | - R. Bonifacio
- United Nations World Food Programme, Rome, Italy
| | - M. Anderson
- U.S. Department of Agriculture, Agricultural Research Service, Beltsville, MD USA
| | - C. Funk
- U.S. Geological Survey Center for Earth Resources Observation and Science and the University of Santa Barbara, Climate Hazards Center, Santa Barbara, CA USA
| | - D. Osgood
- International Research Institute for Climate and Society, Columbia University, New York, NY USA
| | - C. Hain
- NASA Marshall Space Flight Center, Earth Science Branch, Huntsville, AL USA
| | - P. Vinck
- Harvard Humanitarian Initiative, Harvard University, Cambridge, MA USA
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11
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Spahr H, Hillmann D, Hain C, Pfäffle C, Sudkamp H, Franke G, Koch P, Hüttmann G. Darstellung von Blutfluss und Pulsation in retinalen Gefäßen mit Full-Field-Swept-Source-OCT. Klin Monbl Augenheilkd 2016; 233:1324-1330. [DOI: 10.1055/s-0042-120279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- H. Spahr
- Institut für Biomedizinische Optik, Universität zu Lübeck, Lübeck
| | | | - C. Hain
- Institut für Biomedizinische Optik, Universität zu Lübeck, Lübeck
| | - C. Pfäffle
- Institut für Biomedizinische Optik, Universität zu Lübeck, Lübeck
| | - H. Sudkamp
- Medizinisches Laserzentrum Lübeck GmbH, Lübeck
| | - G. Franke
- Institut für Biomedizinische Optik, Universität zu Lübeck, Lübeck
| | - P. Koch
- Medizinisches Laserzentrum Lübeck GmbH, Lübeck
| | - G. Hüttmann
- Institut für Biomedizinische Optik, Universität zu Lübeck, Lübeck
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12
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Schwarzer M, Hain C, Amorim PA, Schrepper A, Doenst T. Cardiac insulin resistance in heart failure may be mediated through PTP1B activation in rats and humans. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332346] [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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13
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Faensen B, Hain C, Höhne J, Schwabe P, Haas N, Schmidmaier G, Wildemann B. Aprotinin application has no negative effect on osseous implant integration: a biomechanical and histomorphometric investigation in a rat model. Arch Orthop Trauma Surg 2009; 129:51-6. [PMID: 18270722 DOI: 10.1007/s00402-008-0582-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2007] [Indexed: 10/22/2022]
Abstract
Intraoperative blood loss requiring allogenic blood transfusion (ABT) is a common problem in major orthopedic surgery. Since transfusion related side effects up to fatal consequences due to blood type incompatibility cannot be excluded completely, it is desirable to reduce the amount of blood loss and transfusions to a minimum. Encouraging results in the application of aprotinin, a natural protease-inhibitor with antifibrinolytic, bleeding-reducing properties, in thoracic-, heart- and abdominal surgery led to the use of aprotinin also in orthopedic surgery. One important safety issue in the use of aprotinin in orthopedic surgery is a possible negative effect on the osseous integration of an implant due to the multiple interactions of aprotinin with several enzymatic systems. In this study, we therefore investigated the influence of aprotinin on the osseous ingrowth of a titanium-implant in a rat model. Forty female Sprague-Dawley rats underwent unilateral retrograde nailing of the femur. Animals were divided in two groups, one receiving i.v. aprotinin intraoperatively, the other group receiving the same amount as saline solution. After 56 days animals were killed and from each group half of the femora were prepared for biomechanical testing, the other half for histological examination. The push-out experiment revealed no significant difference between the aprotinin-group and the control-group, both showing comparable shear stresses. In addition, the histomorphometrical analysis showed comparable implant integration between both groups. The results demonstrate that perioperative aprotinin application has no negative effect on osseous implant integration in a rat model.
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Affiliation(s)
- B Faensen
- Center for Musculoskeletal Surgery, Universitätsmedizin Berlin, Charité, Augustenburger Platz 1, 13353, Berlin, Germany
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14
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Strauss R, Muchl R, Hain C, Hrabcik H. EURO 2008 - preparations for the football championship in Austria. Euro Surveill 2008. [DOI: 10.2807/ese.13.14.08086-en] [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] Open
Abstract
The European Football Championship 2008 (EURO 2008) is jointly organised by Switzerland and Austria and will take place between 7 and 29 June 2008. The Austrian Public Health Service is making special preparations for a potential public health crisis during this mass gathering, which is expected to have around 550,000 spectators [1].
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Affiliation(s)
- R Strauss
- Directorate of Public Health, Federal Ministry for Health, Family and Youth, Vienna, Austria
| | - R Muchl
- Directorate of Public Health, Federal Ministry for Health, Family and Youth, Vienna, Austria
| | - C Hain
- Directorate of Public Health, Federal Ministry for Health, Family and Youth, Vienna, Austria
| | - H Hrabcik
- Directorate of Public Health, Federal Ministry for Health, Family and Youth, Vienna, Austria
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15
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Strauss R, Muchl R, Hain C, Hrabcik H. EURO 2008--preparations for the football championship in Austria. Euro Surveill 2008; 13:8086. [PMID: 18445454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Affiliation(s)
- R Strauss
- Directorate of Public Health, Federal Ministry for Health, Family and Youth, Vienna, Austria.
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16
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Hain C. [Chronic discomfort with dentures - successful treatment with clomipramine]. Psychiatr Prax 2001; 28:303-4. [PMID: 11678084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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17
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Hain C, Többen B, Schulz W. [Evaluation of integrative group therapy with children]. Prax Kinderpsychol Kinderpsychiatr 2001; 50:360-71. [PMID: 11471423] [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: 02/20/2023]
Abstract
The purpose of this study consists in the investigation of the effectiveness of an Integrative Group Therapy involving children from a social focus area. The research has been made on a group therapy covering a total of 22 therapeutic sessions with six "marginalised children" aged seven to nine attending the second class of a primary school. The children suffered from considerable concentration and attention problems affecting their achievements at school. The dominating symptom with three of these children has been aggressiveness, with two of them it has been social withdrawal and insecurity and one child suffered from psychosomatic complaints. The success of the treatment was determined by different target areas (symptomatic features, adaptive function, individual therapeutic goals, assessment of the treatment), having been assessed by different persons of reference (parents, teachers, therapists). According to the results the effectiveness of the Integrative Group Therapy with children has to be regarded unsatisfactory. The average effect size (averaged over all the scales of CBCL and TRF) amounts to 0.32. Considering only those scales where there have been peculiarities at the preliminary measuring, the average effect size amounts to 0.39. According to the individual case evaluation the treatment may be considered successful with one child, yet with another child a definite negative development has been noticed, and with four of the children no or slightly positive changes have been registered. The Integrative Group Therapy seems to be inapplicable to children with aggressive problems. In conclusion the results will be discussed and proposals for an improvement of the treatment are being made.
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Affiliation(s)
- C Hain
- Institut für Psychologie, Technische Universität Braunschweig, Spielmannstr. 12A, 38106 Braunschweig
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18
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Hain C, Peter K. [Initial manifestation of a manic syndrome in advanced age in subcortical arteriosclerotic encephalopathy (Binswanger disease)]. Psychiatr Prax 1999; 26:305-7. [PMID: 10627962] [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] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
We describe the case of a 65-year old man who presented with a first episode of mania lacking a history of previous affective illness. Clinical, neuropsychological and NMR-findings pointed to a subcortical arteriosclerotic encephalopathy (Morbus Binswanger) as an underlying organic condition. According Kleman's concept of "secondary mania" this case illustrates the necessity a thorough search for organic conditions in late manifesting affective illness which may also involve therapeutic considerations.
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19
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Loerch B, Graf-Morgenstern M, Hautzinger M, Schlegel S, Hain C, Sandmann J, Benkert O. Randomised placebo-controlled trial of moclobemide, cognitive-behavioural therapy and their combination in panic disorder with agoraphobia. Br J Psychiatry 1999; 174:205-12. [PMID: 10448444 DOI: 10.1192/bjp.174.3.205] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND In the treatment of panic disorder with agoraphobia, the efficacy of pharmacological, psychological and combined treatments has been established. Unanswered questions concern the relative efficacy of such treatments. AIMS To demonstrate that moclobemide and cognitive-behavioural therapy (CBT) are effective singly and more effective in combination. METHOD Fifty-five patients were randomly assigned to an eight-week treatment of: moclobemide plus CBT; moclobemide plus clinical management ('psychological placebo'); placebo plus CBT; or placebo plus clinical management. RESULTS Comparisons between treatments revealed strong effects for CBT. Moclobemide with clinical management was not superior to placebo. The combination of moclobemide with CBT did not yield significantly better short-term results than CBI with placebo. The CBT results remained stable during a six-month follow-up, although a substantial proportion of patients treated with placebo plus CBT needed additional treatment. CONCLUSIONS CBT was highly effective in the treatment of panic disorder with agoraphobia and reduced agoraphobia to levels that were comparable to those of non-clinical controls.
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Affiliation(s)
- B Loerch
- Department of Psychiatry, University of Mainz, Germany
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20
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Hain C, Demisch S, Langer B. [Organically-induced delusional syndrome in psittacosis]. Psychiatr Prax 1997; 24:198-9. [PMID: 9340661] [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] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We report on a case of psittacosis which presented first as an atypical pneumonia and in the further course as a paranoid syndrome with a concomitant disorder of consciousness. In contrast with reports from the literature there were no obvious neurologic signs and symptoms which would have indicated the organic nature of the illness. Therefore, the correct diagnosis was based on a careful anamnesis, clinical and psychopathological examination and confirmatory results of serological tests.
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Affiliation(s)
- C Hain
- Medizinisch-Psychosomatische Klinik, Bad Bramstedt
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21
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Hain C, Maier W, Hoechst-Janneck S, Franke P. Subclinical thought disorder in first-degree relatives of schizophrenic patients. Results from a matched-pairs study with the Thought Disorder Index. Acta Psychiatr Scand 1995; 92:305-9. [PMID: 8848957 DOI: 10.1111/j.1600-0447.1995.tb09587.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
To assess the frequency and quality of formal thought disorder in schizophrenic patients and their first-degree relatives, a consecutive series of 36 unmedicated patients, 20 siblings of these patients and 37 normal control subjects were examined with Holzman's Thought Disorder Index (TDI). As a proof of the internal validity of this tool, the patients demonstrated significantly more thought disorder than the controls as measured by the TDI total score and various subscores, which proved the internal validity of this tool in a German-speaking sample. In addition, in a pairwise comparison with controls who were individually matched by age and sex the patients' siblings had a significantly higher total TDI score and nonsignificant elevations on several subscores (combinatory and flippant). As to the level of severity of the thought disorder, the siblings mostly took an intermediate position between patients and controls. In conjunction with previous reports from other authors, our findings lend further support to the notion of subclinical thought disorder as an indicator of familial vulnerability to schizophrenia.
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Affiliation(s)
- C Hain
- Department of Psychiatry, University of Mainz, Germany
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22
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Terness P, Kohl I, Hübener G, Battistutta R, Moroder L, Welschof M, Dufter C, Finger M, Hain C, Jung M. The natural human IgG anti-F(ab')2 antibody recognizes a conformational IgG1 hinge epitope. J Immunol 1995; 154:6446-52. [PMID: 7539020] [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] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Natural IgG anti-F(ab')2 Abs are part of the physiologic immune repertoire and have important immunoregulatory functions. Although previous work suggested that some of these Abs recognize epitopes located in the constant region of the F(ab')2 molecule, an exact epitope mapping has not been performed. We found that the anti-F(ab')2 Ab binds strongly to F(ab')2 but only weakly to Fab fragments. Fab fragments are lacking the core and lower hinge region. In our experiments, we show that the IgG anti-F(ab')2 Ab binds strongly to a synthetic double chain peptide (225-237/225'-237') comprising the core and lower hinge region of the human IgG1 molecule. In contrast, it binds only weakly to the same peptide in monomeric form (225-237) or to a short double chain hinge peptide (225-232/225'-232'). The double chain peptides comprise a cyclic region between the two cystine bridges and an exocyclic region. Previous nuclear magnetic resonance analyses showed that the cyclic portion of the short double chain hinge peptide adopts the same conformation as that found in the intact IgG1 molecule. The dichroic properties of the short and long double chain hinge peptides indicate that they have identical conformations in their cyclic regions, but have different conformations in their exocyclic regions. The conformational differences in the exocyclic regions explain the binding of the Ab to the long double chain hinge peptide and the lack of binding to the short one. The circular dichroism spectrum of the monomeric hinge peptide, which is not recognized by the Ab, is consistent with the absence of an ordered peptide structure. These findings lead us to conclude that the IgG anti-F(ab')2 Ab recognizes a conformational IgG1 hinge epitope.
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Affiliation(s)
- P Terness
- Department of Transplantation Immunology, University of Heidelberg, Germany
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23
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Terness P, Kohl I, Hübener G, Battistutta R, Moroder L, Welschof M, Dufter C, Finger M, Hain C, Jung M. The natural human IgG anti-F(ab')2 antibody recognizes a conformational IgG1 hinge epitope. The Journal of Immunology 1995. [DOI: 10.4049/jimmunol.154.12.6446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Natural IgG anti-F(ab')2 Abs are part of the physiologic immune repertoire and have important immunoregulatory functions. Although previous work suggested that some of these Abs recognize epitopes located in the constant region of the F(ab')2 molecule, an exact epitope mapping has not been performed. We found that the anti-F(ab')2 Ab binds strongly to F(ab')2 but only weakly to Fab fragments. Fab fragments are lacking the core and lower hinge region. In our experiments, we show that the IgG anti-F(ab')2 Ab binds strongly to a synthetic double chain peptide (225-237/225'-237') comprising the core and lower hinge region of the human IgG1 molecule. In contrast, it binds only weakly to the same peptide in monomeric form (225-237) or to a short double chain hinge peptide (225-232/225'-232'). The double chain peptides comprise a cyclic region between the two cystine bridges and an exocyclic region. Previous nuclear magnetic resonance analyses showed that the cyclic portion of the short double chain hinge peptide adopts the same conformation as that found in the intact IgG1 molecule. The dichroic properties of the short and long double chain hinge peptides indicate that they have identical conformations in their cyclic regions, but have different conformations in their exocyclic regions. The conformational differences in the exocyclic regions explain the binding of the Ab to the long double chain hinge peptide and the lack of binding to the short one. The circular dichroism spectrum of the monomeric hinge peptide, which is not recognized by the Ab, is consistent with the absence of an ordered peptide structure. These findings lead us to conclude that the IgG anti-F(ab')2 Ab recognizes a conformational IgG1 hinge epitope.
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Affiliation(s)
- P Terness
- Department of Transplantation Immunology, University of Heidelberg, Germany
| | - I Kohl
- Department of Transplantation Immunology, University of Heidelberg, Germany
| | - G Hübener
- Department of Transplantation Immunology, University of Heidelberg, Germany
| | - R Battistutta
- Department of Transplantation Immunology, University of Heidelberg, Germany
| | - L Moroder
- Department of Transplantation Immunology, University of Heidelberg, Germany
| | - M Welschof
- Department of Transplantation Immunology, University of Heidelberg, Germany
| | - C Dufter
- Department of Transplantation Immunology, University of Heidelberg, Germany
| | - M Finger
- Department of Transplantation Immunology, University of Heidelberg, Germany
| | - C Hain
- Department of Transplantation Immunology, University of Heidelberg, Germany
| | - M Jung
- Department of Transplantation Immunology, University of Heidelberg, Germany
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24
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Wetzel H, Szegedi A, Hain C, Wiesner J, Schlegel S, Benkert O. Seroquel (ICI 204 636), a putative "atypical" antipsychotic, in schizophrenia with positive symptomatology: results of an open clinical trial and changes of neuroendocrinological and EEG parameters. Psychopharmacology (Berl) 1995; 119:231-8. [PMID: 7659771 DOI: 10.1007/bf02246165] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Preclinical data indicated that seroquel (ICI 204 636), a dibenzothiazepine with 5-HT2 and D2-like receptor antagonistic properties, might be an effective antipsychotic agent, causing fewer extrapyramidal side effects than typical neuroleptics. In the present study, 12 patients suffering from schizophrenia or schizophreniform disorder with predominantly positive symptomatology were treated in an open clinical trial for 4 weeks with seroquel at a maximum dosage of 750 mg/day. The drug was generally well tolerated, and virtually no adverse extrapyramidal side effects such as acute dystonia, parkinsonism or akathisia were observed. Total scores for BPRS (item score 0-6; baseline: 42.0 +/- 2.3; mean +/- SEM), SAPS (64.5 +/- 4.8) and SANS (55.0 +/- 4.3) showed a moderate decrease at the end of treatment (BPRS: 30.0 +/- 3.5; SAPS: 36.1 +/- 6.7; SANS: 42.5 +/- 5.9), when intention-to-treat analysis was applied. There were considerable interindividual differences in treatment response, with some subjects showing almost full remission of positive symptoms, in contrast to about half of the patients who showed no satisfactory clinical improvement. Interestingly, patients showing good antipsychotic response reported slight initial side effects like mild sedation. Prolactin and TSH levels were not altered during seroquel administration. As to pharmaco-EEG investigations, seroquel caused a moderate increase of the absolute power in the alpha, theta, and beta frequency bands, paralleled by a decrease of delta activity. There were no signs of paroxysmal EEG activity under seroquel.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- H Wetzel
- Department of Psychiatry, University of Mainz, Germany
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25
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Welschof M, Terness P, Kolbinger F, Zewe M, Dübel S, Dörsam H, Hain C, Finger M, Jung M, Moldenhauer G. Amino acid sequence based PCR primers for amplification of rearranged human heavy and light chain immunoglobulin variable region genes. J Immunol Methods 1995; 179:203-14. [PMID: 7876568 DOI: 10.1016/0022-1759(94)00286-6] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Previously described primers for PCR amplification of variable immunoglobulin (Ig) genes were based on gene sequences. To include the large number of amino acid sequences of antibodies whose DNA has not been sequenced and to ensure a maximal fit to rearranged human Ig variable region genes, we have made a comprehensive comparison of both protein and nucleotide sequences. The resulting set of 15 primers was able to amplify a wide range of rearranged antibody variable region genes. Restriction sites included in the primers facilitate cloning of the PCR products into various expression vectors. Sequence analyses of PCR-amplified cDNA derived from a polyclonal B cell population showed that maximal enrichment is obtained for highly represented variable Ig gene subgroups. Rarely occurring V kappa 4 and V lambda 5 subgroups were not detected. Rearranged Ig variable region genes from each of 19 human B cell lines were also amplified. Comparisons to germline sequences allowed the allocation of rearranged genes to the original Ig genes. This primer set should be very useful for generating large repertoires of rearranged V genes and for amplifying genes of individual B cell clones.
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Affiliation(s)
- M Welschof
- Department of Transplantation Immunology, University of Heidelberg, Germany
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26
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Franke P, Maier W, Hardt J, Hain C, Cornblatt BA. Attentional abilities and measures of schizotypy: their variation and covariation in schizophrenic patients, their siblings, and normal control subjects. Psychiatry Res 1994; 54:259-72. [PMID: 7792330 DOI: 10.1016/0165-1781(94)90020-5] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Thirty-five schizophrenic patients in the early stages of illness, 26 of their healthy siblings, and 35 normal control subjects performed the Continuous Performance Test, Identical Pairs version (CPT-IP). Both schizophrenic patients and their siblings were significantly impaired in their attentional performance compared with normal subjects. These results support impaired attention as a vulnerability marker of schizophrenia and indicate that at-risk siblings of schizophrenic patients display attentional deficits comparable to those found for the offspring of schizophrenic parents. By contrast, a decline in performance with the onset of a distraction condition (auditory and visual stimuli) was seen only in schizophrenic patients; siblings and normal control subjects did not differ from one another in response to experimental distraction. Therefore, it was concluded that differential distractibility is likely to be a state marker of schizophrenia. In clinical assessments, healthy siblings rated themselves as experiencing significantly more physical anhedonia than did normal control subjects, but the siblings did not differ from normal control subjects in self-rated perceptual aberrations. Contrary to expectation, performance on the CPT-IP did not correlate significantly with either anhedonia or perceptual aberration in high-risk siblings. These results suggest that psychometrically measured "psychosis proneness" and neuropsychologically detected deficits may tap two nonoverlapping sources of vulnerability to schizophrenia.
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Affiliation(s)
- P Franke
- Department of Psychiatry, University of Mainz, Germany
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27
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Abstract
Deviant response patterns in experimental reaction time paradigms in schizophrenic probands are well documented. Although simple reaction times are strongly influenced by the current psychopathological status of the proband (e.g. florid psychotic patients versus remitted patients) these influences are less clear for measures obtained from more complex reaction time paradigms. These include the crossover paradigm (reaction time to stimuli presented after constant preparatory intervals in comparison to reaction time to stimuli presented after irregular preparatory intervals) and the modality shift paradigm (reaction time to a stimulus (light or tone) when the modality of the stimulus on the preceding trial was the same compared to when it was different). It is not clear if these peculiarities of response patterns occur as a consequence of the disease or if they represent vulnerability markers for schizophrenia. Both crossover reaction time and modality shift reaction time paradigms were applied to 56 drug free schizophrenics, 45 healthy siblings of these patients and 68 healthy controls. The results indicate that retarded reaction times and the occurrence of the crossover effect as well as of the modality shift effect distinguish schizophrenics and controls. Healthy siblings of schizophrenics differed from healthy controls with regard to the crossover effect but not with regard to the modality shift effect. Therefore only the crossover effect represents a vulnerability marker for schizophrenia. Correlations between the modality shift and the crossover effect revealed strong correlations in the schizophrenic group only.
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Affiliation(s)
- W Maier
- Department of Psychiatry, University of Mainz, Germany
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28
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Abstract
This study investigated the performance of individuals with familiar loading of schizophrenia (healthy siblings of schizophrenic inpatients) on three neuropsychological tasks assumed to require frontal lobe functions: Trail Making Test (TMT), verbal fluency and Wisconsin Card Sorting Test (WCST). Healthy siblings of schizophrenics differed in performance from healthy controls not only on the WCST, but also on the Trail Making Test and the verbal fluency task. Furthermore, scores of physical anhedonia, assessed in a self-report rating scale (Chapman et al., 1976) were also significantly higher in the high risk group than in the control sample. However, healthy siblings of schizophrenics did not differ from controls with regard to experiences of perceptual aberrations, measured by the same method (Chapman et al., 1978). Neuropsychological performance and elevated anhedonia scores in the high risk group were interpreted under the conceptual framework of vulnerability markers: they were supposed to represent a trait shared by family members of schizophrenic probands. Amongst the neuropsychological tests, there were significant correlations between the physical anhedonia score and WCST and Trail Making test performance in the group of healthy siblings of schizophrenics, but not in the control group.
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Affiliation(s)
- P Franke
- Department of Psychiatry, University of Mainz, Germany
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29
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Abstract
In a search for an external validation of the negative syndrome construct and the attentional impairment item on Andreasen's scale, 49 unmedicated schizophrenic patients were administered the Span of Apprehension Test and a Continuous Performance Test with two levels of difficulty. This schizophrenic sample performed significantly more poorly on the attentional tests than a comparable group of 27 healthy control subjects. Depending on the difficulty of the test we found a number of significant correlations between the SANS composite score and the pertaining attentional impairment item on the one hand and experimental indices of attentional functioning on the other hand, which might corroborate the psychopathological assumptions. The implications of these results for further attempts to validate clinical concepts of the positive/negative dichotomy by experimental means will be discussed.
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Affiliation(s)
- C Hain
- Department of Psychiatry, University of Mainz, FRG
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30
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Abstract
This study has used neuropsychological tasks--Wisconsin Card Sort (WCST), Trail Making (TMT) A and B, Verbal Fluency, Digit Span--to compare acute and currently off-medication schizophrenics, patients with unipolar nonpsychotic major depression and healthy controls. Both patient groups differed significantly from healthy controls in their neuropsychological performance. Furthermore there was only little (quantitative) difference between schizophrenics and depressed patients in the frontal lobe associated tasks: WCST, TMT and Verbal Fluency. Depressed patients tended to perform worse than schizophrenics on Digit Span, a task hypothesized to involve other than frontal areas of the brain. Although the group of depressed patients was older than the schizophrenic sample, the effect of age may not totally explain the findings. The results indicate that there do exist disturbances in frontal lobe cognitive functioning in schizophrenia and depression. Symptomatology (SANS/SAPS) and cognitive functioning in the schizophrenic group revealed only a trend for negative symptoms to be associated with worse performance in the WCST, but were significantly correlated with negative as well as positive symptoms on the TMT.
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Affiliation(s)
- P Franke
- Department of Psychiatry, University of Mainz, FRG
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31
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Abstract
Schizophrenia is associated with enduring deficits in neuropsychological functioning. It is widely undecided if the various aspects of neuropsychological impairment are a consequence of the disorder or if they are also present premorbidly and in populations at increased risk for schizophrenia (vulnerability markers). Neuropsychological deficits in healthy relatives of schizophrenic patients who are at an elevated risk for schizophrenia and who did not yet pass the period of risk would indicate that these deficits are vulnerability markers. This hypothesis was tested for three neuropsychological paradigms which have been proven to distinguish schizophrenic patients from controls. 33 siblings of drug-free schizophrenic probands revealed deficits has compared to 33 matched healthy controls in a blurred single target version of the Continuous Performance Test and in a multiple item version of the Span of Apprehension Test but not so in less difficult versions of both tests or in the time needed to react to stimuli with shifting modality.
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Affiliation(s)
- W Maier
- Department of Psychiatry, University of Mainz, FRG
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32
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Abstract
The Wisconsin Card Sorting Test (WCST) is a neuropsychological test, hypothesized to be an indicator of dorsolateral prefrontal cortex (DLPFC) functioning. The performance of schizophrenic patients in our sample (off medication) was worse than the performance of healthy controls in all variables of the WCST, including perseverative responses (PR) as well as non-perseverative responses (NPR). The rate of perseverative and non-perseverative responses was neither a function of the severity of the illness (measured by SANS/SAPS scales) nor the duration of the disease. Healthy siblings of schizophrenic probands revealed more perseverative responses than healthy controls, but did not show any difference with respect to the non-perseverative responses. This finding suggests that the difficulty to shift a cognitive set, reflected by the frequency of perseverative responses, is in favor of the WCST as a vulnerability marker for schizophrenia, whereas non-perseverative responses presumably indicate a state, but not a trait marker of the disease. However, the usefulness of this indicator may be limited by its association with age, which is worthy of being studied in closer detail.
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Affiliation(s)
- P Franke
- University of Mainz, Department of Psychiatry, Germany
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Jozefovics F, Adorjan C, Bălan V, Hain C, Kiss K, Kuron A, Lakatos V, Nagy A, Olteanu M. [Causes responsible for delaying the detection of adult tuberculosis in the current stage of the anti-tuberculosis campaign]. Rev Ig Bacteriol Virusol Parazitol Epidemiol Pneumoftiziol Pneumoftiziol 1986; 35:45-56. [PMID: 3016868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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34
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Barbu Z, Jozefovics F, Hain C, Barbu E, Pupp A, Borş M. [Changes in pulmonary perfusion detectable by angiopneumoscintigraphy in tuberculosis. (Summary text)]. Ftiziologia 1973; 22:17-8. [PMID: 4690186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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