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Walbum P, Andreasen L, Geilswijk M, Niemann I, Sunde L. Aneuploidy is frequent in heterozygous diploid and triploid hydatidiform moles. Sci Rep 2024; 14:6876. [PMID: 38519579 PMCID: PMC10960034 DOI: 10.1038/s41598-024-57465-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 03/18/2024] [Indexed: 03/25/2024] Open
Abstract
Hydatidiform moles are abnormal conceptuses. Many hydatidiform moles are diploid androgenetic, and of these, most are homozygous in all loci. Additionally, most hydatidiform moles are euploid. Using Single Nucleotide Polymorphism (SNP) array analysis, in two studies a higher frequency of aneuploidy was observed in diploid androgenetic heterozygous conceptuses, than in their homozygous counterparts. In the Danish Mole Project, we analyze conceptuses suspected to be hydatidiform moles due to the clinical presentation, using karyotyping and Short Tandem Repeat (STR) analysis. Among 278 diploid androgenetic conceptuses, 226 were homozygous in all loci and 52 (18.7%) were heterozygous in several loci. Among 142 triploid diandric conceptuses, 141 were heterozygous for paternally inherited alleles in several loci. Here we show that the frequencies of aneuploidy in diploid androgenetic heterozygous and triploid diandric heterozygous conceptuses were significantly higher than the frequency of aneuploidy in diploid androgenetic homozygous conceptuses. In diploid androgenetic and triploid diandric conceptuses that are heterozygous for paternally inherited alleles, the two paternally inherited sets of genomes originate in two spermatozoa. Each spermatozoon provides one pair of centrioles to the zygote. The presence of two pairs of centrioles may cause an increased risk of aneuploidy.
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Affiliation(s)
- P Walbum
- Department of Clinical Genetics, Aalborg University Hospital, Aalborg, Denmark.
| | - L Andreasen
- Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark
| | - M Geilswijk
- Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark
| | - I Niemann
- Department of Gynecology and Obstetrics, Randers Regional Hospital, Randers, Denmark
| | - L Sunde
- Department of Clinical Genetics, Aalborg University Hospital, Aalborg, Denmark
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Bønløkke S, Steiniche T, Sorensen BS, Nyvang GB, Lindegaard JC, Blaakaer J, Bertelsen J, Fuglsang K, Strube ML, Lenz S, Stougaard M. Circulating cell-free HPV DNA is a strong marker for disease severity in cervical cancer. Mol Oncol 2023. [PMID: 37853962 DOI: 10.1002/1878-0261.13538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 10/08/2023] [Accepted: 10/17/2023] [Indexed: 10/20/2023] Open
Abstract
For cervical cancer (CC), circulating cell-free HPV DNA (ccfHPV) may establish disease severity. Furthermore, HPV integration has been correlated to viral load and survival. In this study, pre-treatment plasma from 139 CC cases (50 primary surgery patients, 22 primary surgery + adjuvant oncological therapy patients, and 67 primary oncological therapy patients) was collected (2018-2020). Furthermore, plasma from 25 cervical intraepithelial neoplasia grade 3 patients and 15 healthy women (negative controls) were collected. Two next-generation sequencing (NGS) panels were used to establish ccfHPV presence and human papillomavirus type 16 (HPV16) integration status. ccfHPV was detected in four primary surgery (8.0%), eight primary surgery + adjuvant oncology (36.4%), and 54 primary oncology (80.6%) patients. For primary oncology patients with HPV16-related cancer (n = 37), more ccfHPVneg than ccfHPVpos patients had HPV16 integration (P = 0.04), and in patients with HPV16 integration (n = 13), ccfHPVpos patients had higher disease stages than ccfHPVneg patients (P = 0.05). In summary, ccfHPV presence is related to disease severity and may add to the debated Sedlis criteria used for identifying patients for adjuvant oncological therapy. However, ccfHPV detection is influenced by HPV integration status and disease stage, and these factors need to be considered in ccfHPVneg patients.
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Affiliation(s)
- Sara Bønløkke
- Department of Clinical Medicine, Aarhus University, Denmark
- Department of Pathology, Aarhus University Hospital, Denmark
| | - Torben Steiniche
- Department of Clinical Medicine, Aarhus University, Denmark
- Department of Pathology, Aarhus University Hospital, Denmark
| | - Boe Sandahl Sorensen
- Department of Clinical Medicine, Aarhus University, Denmark
- Department of Clinical Biochemistry, Aarhus University Hospital, Denmark
| | | | | | - Jan Blaakaer
- Department of Obstetrics and Gynecology, Odense University Hospital, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense M, Denmark
| | | | - Katrine Fuglsang
- Department of Clinical Medicine, Aarhus University, Denmark
- Department of Obstetrics and Gynecology, Aarhus University Hospital, Denmark
| | - Mikael Lenz Strube
- DTU Bioengineering, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Suzan Lenz
- Private Gynecological Clinic "Suzan Lenz Gynaekolog", Copenhagen, Denmark
| | - Magnus Stougaard
- Department of Clinical Medicine, Aarhus University, Denmark
- Department of Pathology, Aarhus University Hospital, Denmark
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Nielsen JM, Kristinsdóttir ÁE, Zibrandtsen IC, Masulli P, Ballegaard M, Andersen TS, Kjær TW. Out-of-hospital multimodal seizure detection: a pilot study. BMJ Neurol Open 2023; 5:e000442. [PMID: 37547054 PMCID: PMC10401242 DOI: 10.1136/bmjno-2023-000442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 07/14/2023] [Indexed: 08/08/2023] Open
Abstract
Background Out-of-hospital seizure detection aims to provide clinicians and patients with objective seizure documentation in efforts to improve the clinical management of epilepsy. In-patient studies have found that combining different modalities helps improve the seizure detection accuracy. In this study, the objective was to evaluate the viability of out-of-hospital seizure detection using wearable ECG, accelerometry and behind-the-ear electroencephalography (EEG). Furthermore, we examined the signal quality of out-of-hospital EEG recordings. Methods Seventeen patients were monitored for up to 5 days. A support vector machine based seizure detection algorithm was applied using both in-patient seizures and out-of-hospital electrographic seizures in one patient. To assess the content of noise in the EEG signal, we compared the root-mean-square (RMS) of the recordings to a reference threshold derived from manually categorised segments of EEG recordings. Results In total 1427 hours of continuous EEG was recorded. In one patient, we identified 15 electrographic focal impaired awareness seizures with a motor component. After training our algorithm on in-patient data, we found a sensitivity of 91% and a false alarm rate (FAR) of 18/24 hours for the detection of out-of-hospital seizures using a combination of EEG and ECG recordings. We estimated that 30.1% of the recorded EEG signal was physiological EEG, with an RMS value within the reference threshold. Conclusion We found that detection of out-of-hospital focal impaired awareness seizures with a motor component is possible and that applying multiple modalities improves the diagnostic accuracy compared with unimodal EEG. However, significant challenges remain regarding a high FAR and that only 30.1% of the EEG data represented usable signal.
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Affiliation(s)
- Jonas Munch Nielsen
- Department of Neurology, Zealand University Hospital Roskilde, Roskilde, Denmark
- Department of Clinical Medicine, University of Copenhagen, Kobenhavn, Denmark
| | - Ástrós Eir Kristinsdóttir
- Department of Neurology, Zealand University Hospital Roskilde, Roskilde, Denmark
- Department of Applied Mathematics and Computer Science, Technical University, Lyngby, Denmark
| | | | - Paolo Masulli
- Department of Applied Mathematics and Computer Science, Technical University, Lyngby, Denmark
- iMotions A/S, Copenhagen K, Denmark
| | - Martin Ballegaard
- Department of Neurology, Zealand University Hospital Roskilde, Roskilde, Denmark
- Department of Clinical Medicine, University of Copenhagen, Kobenhavn, Denmark
| | - Tobias Søren Andersen
- Department of Applied Mathematics and Computer Science, Technical University, Lyngby, Denmark
| | - Troels Wesenberg Kjær
- Department of Neurology, Zealand University Hospital Roskilde, Roskilde, Denmark
- Department of Clinical Medicine, University of Copenhagen, Kobenhavn, Denmark
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Franch O, Gutiérrez-Corbo C, Domínguez-Asenjo B, Boesen T, Jensen PB, Nejsum LN, Keller JG, Nielsen SP, Singh PR, Jha RK, Nagaraja V, Balaña-Fouce R, Ho YP, Reguera RM, Knudsen BR. DNA flowerstructure co-localizes with human pathogens in infected macrophages. Nucleic Acids Res 2020; 48:6081-6091. [PMID: 32402089 PMCID: PMC7293011 DOI: 10.1093/nar/gkaa341] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 04/16/2020] [Accepted: 04/24/2020] [Indexed: 01/07/2023] Open
Abstract
Herein, we characterize the cellular uptake of a DNA structure generated by rolling circle DNA amplification. The structure, termed nanoflower, was fluorescently labeled by incorporation of ATTO488-dUTP allowing the intracellular localization to be followed. The nanoflower had a hydrodynamic diameter of approximately 300 nanometer and was non-toxic for all mammalian cell lines tested. It was internalized specifically by mammalian macrophages by phagocytosis within a few hours resulting in specific compartmentalization in phagolysosomes. Maximum uptake was observed after eight hours and the nanoflower remained stable in the phagolysosomes with a half-life of 12 h. Interestingly, the nanoflower co-localized with both Mycobacterium tuberculosis and Leishmania infantum within infected macrophages although these pathogens escape lysosomal degradation by affecting the phagocytotic pathway in very different manners. These results suggest an intriguing and overlooked potential application of DNA structures in targeted treatment of infectious diseases such as tuberculosis and leishmaniasis that are caused by pathogens that escape the human immune system by modifying macrophage biology.
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Affiliation(s)
- Oskar Franch
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus, Denmark
| | | | | | - Thomas Boesen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus, Denmark
- DANDRITE, Nordic EMBL Partnership for Molecular Medicine, Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Pia Bomholt Jensen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus, Denmark
| | - Lene N Nejsum
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Josephine Geertsen Keller
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | | | - Prakruti R Singh
- Department of Microbiology and Cell Biology, Indian Institute of Science & Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India
| | - Rajiv Kumar Jha
- Department of Microbiology and Cell Biology, Indian Institute of Science & Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India
| | - Valakunja Nagaraja
- Department of Microbiology and Cell Biology, Indian Institute of Science & Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India
| | | | - Yi-Ping Ho
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong SAR
- Centre for Novel Biomaterials, The Chinese University of Hong Kong, Hong Kong SAR
| | | | - Birgitta Ruth Knudsen
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus, Denmark
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