TY - THES A1 - Hofmann, Theresa T1 - Interleukin-1 beta in Follikelflüssigkeit und Embryo-Kulturmedium und dessen Zusammenhang mit der Entwicklung menschlicher Präimplantationsembryonen bei der künstlichen Befruchtung T1 - IL-1 beta in follicular fluid and embryo culture medium and its relationship to preimplantation embryo development in IVF/ICSI cycles N2 - Ziel dieser Untersuchung war, den Einfluss von Interleukin (IL)-1 beta auf die Entwicklung menschlicher Präimplantationsembryonen bei der künstlichen Befruchtung zu überprüfen. An der Studie nahmen 256 Paare teil, die aufgrund verschiedener Indikationen das IVF-/ICSI-Programm der Universitäts-Frauenklinik Würzburg durchliefen. In 160 Fällen fand eine konventionelle IVF-Behandlung statt und in 96 Fällen wurde die ICSI-Methode angewendet. In der Follikelflüssigkeit wurden sowohl die IL-1 beta-Konzentrationen, als auch die FSH-, LH-, Östradiol- und Progesteron-Werte bestimmt. Der Embryotransfer fand nach einer Kulturdauer von fünf Tagen statt. Die Qualität der Embryonen wurde sowohl 14 bis 18 Stunden nach Insemination als auch am Tag 3 und Tag 5 der Embryonenkultur beurteilt. Sofern ausreichend Material vorhanden war, wurden die IL-1 beta-Konzentrationen auch in den Überständen der Embryo-Kulturmedien von Tag 3 und Tag 5 bestimmt. In IVF-Zyklen konnte zwischen IL-1 beta in der Follikelflüssigkeit und der Fertilisationsrate ein signifikanter Zusammenhang festgestellt werden. Befruchteten sich über 90 % der Eizellen, so lagen die zugehörigen IL-1 beta-Konzentrationen signifikant höher (3,34 pg/ml) als bei niedrigeren Befruchtungsraten < 90 % (1,96 pg/ml, p = 0,032*). Bei der Intrazytoplasmatischen Spermieninjektion konnte diese Assoziation nicht nachgewiesen werden. IL-1 beta in der Follikelflüssigkeit scheint mit der Embryonenqualität nicht in Verbindung zu stehen. Weder mit der Zygotenqualität noch mit der morphologischen Entwicklung der Embryonen am dritten oder fünften Kulturtag zeigte sich eine signifikante Korrelation. Auch zwischen dem Eintritt einer Schwangerschaft und den IL-1 beta-Werten in der Follikelflüssigkeit bestand keine signifikante Abhängigkeit. Zwischen IL-1 beta und Hormonen in der Follikelflüssigkeit konnte kein Zusammenhang ermittelt werden. Die IL-1 beta-Werte im Kulturmedium von Tag 3 zeigten keine Korrelation mit der zugehörigen Embryonenmorphologie. Im Tag 5-Medium von Blastozysten mit einer guten morphologischen Qualität und einer mittleren Blastozystenbeurteilung von 3,5 oder besser lagen die IL-1 beta-Werte signifikant höher (29,3 pg/ml) als beim Restkollektiv (4,4 pg/ml, p = 0,041*). In dieser Studie waren hohe intrafollikuläre IL-1 beta-Konzentrationen bei IVF-Patientinnen mit einer erfolgreichen Befruchtung assoziiert. Die Bestimmung dieses Zytokins in der Follikelflüssigkeit scheint allerdings keinen Vorhersagewert für die weitere morphologische Entwicklung der Embryonen oder den Erfolg der IVF/ICSI-Behandlung zu haben. N2 - The aim of this study was to determine the levels of interleukin (IL)-1 beta in follicular fluid (FF) and to asses the association of this cytokine with the preimplantation embryo development in IVF/ICSI cycles. 256 couples were included in this prospective study and underwent the IVF or ICSI program for different indications. In 160 patients, conventional IVF was performed and in 96 cases the ICSI procedure was applied. IL-1 beta levels and concentrations of FSH, LH, estradiol and progesterone were determined in the fluid of the dominant follicle. Pronuclear morphology was evaluated 16-18 hours after insemination or injection. Embryo morphology was determined on day 3 and blastocyst morphology on day 5. If enough medium was available, IL-1 beta concentrations were measured in culture fluid supernatants from day 3 and day 5. The follicular fluid of IVF-patients with good fertilization rates (> 90%) contained significantly higher levels of IL-1 beta (3.34 pg/ml) than the FF of women with fertilization rates < 90% (1.96 pg/ml; p = 0.032. This Association was not found in ICSI cycles. There was no correlation between IL-1 beta concentration and pronuclear morphology, day 3 and day 5 embryo morphology. Intrafollicular cytokine concentrations were not significantly different in pregnant and non-pregnant women. No association was found between IL-1 beta and gonadotropins or steroids in follicular fluid. IL-1 beta in embryo culture medium from day 3 was not related to embryo morphology at this time. Day 5 culture fluid from highly developed blastocysts (mean blastocyst grade < 3,5) contained significantly higher IL-1 beta levels (29,3 pg/ml) than medium from other embryos (mean blastocyst grade > 3,5, 4,4 pg/ml, p = 0,041*). In this study high intrafollicular IL-1 beta concentrations in IVF cycles were associated with successful fertilization. However, determination of this cytokine in follicular fluid seems not to posses a predictive value for further embryonic development or IVF/ICSI outcome. KW - Interleukin-1 beta KW - Follikelflüssigkeit KW - Präimplantationsembryo KW - IVF KW - ICSI KW - Interleukin-1 beta KW - follicular fluid KW - preimplantation embryo KW - IVF KW - ICSI Y1 - 2006 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-18807 ER - TY - JOUR A1 - Traub, Jan A1 - Grondey, Katja A1 - Gassenmaier, Tobias A1 - Schmitt, Dominik A1 - Fette, Georg A1 - Frantz, Stefan A1 - Boivin-Jahns, Valérie A1 - Jahns, Roland A1 - Störk, Stefan A1 - Stoll, Guido A1 - Reiter, Theresa A1 - Hofmann, Ulrich A1 - Weber, Martin S. A1 - Frey, Anna T1 - Sustained increase in serum glial fibrillary acidic protein after first ST-elevation myocardial infarction JF - International Journal of Molecular Sciences N2 - Acute ischemic cardiac injury predisposes one to cognitive impairment, dementia, and depression. Pathophysiologically, recent positron emission tomography data suggest astroglial activation after experimental myocardial infarction (MI). We analyzed peripheral surrogate markers of glial (and neuronal) damage serially within 12 months after the first ST-elevation MI (STEMI). Serum levels of glial fibrillary acidic protein (GFAP) and neurofilament light chain (NfL) were quantified using ultra-sensitive molecular immunoassays. Sufficient biomaterial was available from 45 STEMI patients (aged 28 to 78 years, median 56 years, 11% female). The median (quartiles) of GFAP was 63.8 (47.0, 89.9) pg/mL and of NfL 10.6 (7.2, 14.8) pg/mL at study entry 0–4 days after STEMI. GFAP after STEMI increased in the first 3 months, with a median change of +7.8 (0.4, 19.4) pg/mL (p = 0.007). It remained elevated without further relevant increases after 6 months (+11.7 (0.6, 23.5) pg/mL; p = 0.015), and 12 months (+10.3 (1.5, 22.7) pg/mL; p = 0.010) compared to the baseline. Larger relative infarction size was associated with a higher increase in GFAP (ρ = 0.41; p = 0.009). In contrast, NfL remained unaltered in the course of one year. Our findings support the idea of central nervous system involvement after MI, with GFAP as a potential peripheral biomarker of chronic glial damage as one pathophysiologic pathway. KW - myocardial infarction KW - STEMI KW - glial fibrillary acidic protein KW - GFAP KW - neurofilament light chain KW - NfL KW - glial damage KW - cardiac magnetic resonance imaging KW - MRI KW - infarction size Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-288261 SN - 1422-0067 VL - 23 IS - 18 ER - TY - JOUR A1 - Schreiber, Laura M. A1 - Lohr, David A1 - Baltes, Steffen A1 - Vogel, Ulrich A1 - Elabyad, Ibrahim A. A1 - Bille, Maya A1 - Reiter, Theresa A1 - Kosmala, Aleksander A1 - Gassenmaier, Tobias A1 - Stefanescu, Maria R. A1 - Kollmann, Alena A1 - Aures, Julia A1 - Schnitter, Florian A1 - Pali, Mihaela A1 - Ueda, Yuichiro A1 - Williams, Tatiana A1 - Christa, Martin A1 - Hofmann, Ulrich A1 - Bauer, Wolfgang A1 - Gerull, Brenda A1 - Zernecke, Alma A1 - Ergün, Süleyman A1 - Terekhov, Maxim T1 - Ultra-high field cardiac MRI in large animals and humans for translational cardiovascular research JF - Frontiers in Cardiovascular Medicine N2 - A key step in translational cardiovascular research is the use of large animal models to better understand normal and abnormal physiology, to test drugs or interventions, or to perform studies which would be considered unethical in human subjects. Ultrahigh field magnetic resonance imaging (UHF-MRI) at 7 T field strength is becoming increasingly available for imaging of the heart and, when compared to clinically established field strengths, promises better image quality and image information content, more precise functional analysis, potentially new image contrasts, and as all in-vivo imaging techniques, a reduction of the number of animals per study because of the possibility to scan every animal repeatedly. We present here a solution to the dual use problem of whole-body UHF-MRI systems, which are typically installed in clinical environments, to both UHF-MRI in large animals and humans. Moreover, we provide evidence that in such a research infrastructure UHF-MRI, and ideally combined with a standard small-bore UHF-MRI system, can contribute to a variety of spatial scales in translational cardiovascular research: from cardiac organoids, Zebra fish and rodent hearts to large animal models such as pigs and humans. We present pilot data from serial CINE, late gadolinium enhancement, and susceptibility weighted UHF-MRI in a myocardial infarction model over eight weeks. In 14 pigs which were delivered from a breeding facility in a national SARS-CoV-2 hotspot, we found no infection in the incoming pigs. Human scanning using CINE and phase contrast flow measurements provided good image quality of the left and right ventricle. Agreement of functional analysis between CINE and phase contrast MRI was excellent. MRI in arrested hearts or excised vascular tissue for MRI-based histologic imaging, structural imaging of myofiber and vascular smooth muscle cell architecture using high-resolution diffusion tensor imaging, and UHF-MRI for monitoring free radicals as a surrogate for MRI of reactive oxygen species in studies of oxidative stress are demonstrated. We conclude that UHF-MRI has the potential to become an important precision imaging modality in translational cardiovascular research. KW - ultrahigh-field MRI KW - large animal models KW - translational research KW - research infrastructure KW - heart KW - organoid KW - pig KW - cardiovascular MRI Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-317398 SN - 2297-055X VL - 10 ER -