144 results on '"Renaldo Faber"'
Search Results
2. Analysis of Heart Rate and Blood Pressure Variability in Pregnancy - New Method for the Prediction of Preeclampsia.
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Hagen Malberg, Robert Bauernschmitt, Thomas Walther, Andreas Voss, Renaldo Faber, Holger Stepan, and Niels Wessel
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- 2008
3. Basic Gynecologic Ultrasound Examination (Level I): DEGUM, ÖGUM, and SGUM Recommendations
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Dieter Grab, Eberhard Merz, Karl-Heinz Eichhorn, Boris Tutschek, Karl Oliver Kagan, Kai-Sven Heling, Renaldo Faber, Philipp Klaritsch, Andreas Rempen, Christiane Kähler, Wolfgang Henrich, Gwendolin Manegold-Brauer, Samir Helmy, and Markus Hoopmann
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Radiology, Nuclear Medicine and imaging - Abstract
Ultrasound has become an essential diagnostic tool in gynecology, and every practicing gynecologist must be able to differentiate normal from pathologic findings, such as benign or malignant pelvic masses, adnexal torsion, pelvic inflammation disease, endometriosis, ectopic pregnancies, and congenital uterine malformations at least on a basic level. A standardized approach to the correct settings of the ultrasound system, the indications for gynecologic ultrasound investigations, and the sonographic appearance of normal anatomy and common pathologic findings in the standard planes are important prerequisites for safe and confident clinical management of gynecologic patients. Based on current publications and different national and international guidelines, updated DEGUM, ÖGUM, and SGUM recommendations for the performance of basic gynecologic ultrasound examinations were established.Die sonografische Basisuntersuchung in der Gynäkologie umfasst Diagnostik und Differenzialdiagnostik in der täglichen Praxis: Gesundheitsvorsorge, Abgrenzung der Normalbefunde von pathologischen Befunden wie kongenitale Fehlbildungen, benigne und maligne Tumoren, Adnextorsionen, entzündliche Erkrankungen des inneren Genitals, Endometriose, gestörte Frühgraviditäten und Tubargraviditäten sowie Fragestellungen zu Kontrazeption und Fertilität. Die Standardisierung der Untersuchungstechnik sowie die genaue Definition der Leistungsinhalte für die Basisdiagnostik und für die weiterführende Diagnostik (DEGUM-Stufe II) analog des schon seit Jahren in der pränatalen Diagnostik bewährten Mehrstufenkonzepts der DEGUM sind inzwischen auch in die gynäkologische Sonografie implementiert worden. Als Grundlage für eine strukturierte Aus- und Weiterbildung im Rahmen dieses Stufenkonzepts haben DEGUM, ÖGUM und SGUM die Qualitätsanforderungen und die Leistungsinhalte für gynäkologische sonografische Basisuntersuchungen (DEGUM-Stufe I) entsprechend dem gegenwärtigen Kenntnisstand sowie anhand nationaler und internationaler Standards und Empfehlungen aktualisiert.
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- 2022
4. Pränatale Diagnose einer singulären Nabelschnurarterie Typ II (persistierende Vitellinarterie) bei einem Feten mit Darmatresie als Komplikation
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Sabine Riße, Renaldo Faber, Holger Stepan, and Martin Lacher
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- 2022
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5. Multiscale entropy and detrended fluctuation analysis of QT interval and heart rate variability during normal pregnancy.
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Mathias Baumert, Michal Javorka, Andrea Seeck, Renaldo Faber, Prashanthan Sanders, and Andreas Voss
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- 2012
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6. Hidden Markov models based on symbolic dynamics for statistical modeling of cardiovascular control in hypertensive pregnancy disorders.
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Vico Baier, Mathias Baumert, Pere Caminal, Montserrat Vallverdú, Renaldo Faber, and Andreas Voss
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- 2006
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7. Prenatal and Obstetric Parameters of Late Terminations: A Retrospective Analysis
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Julia Kern, Holger Stepan, Anne Dathan-Stumpf, and Renaldo Faber
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induction of labor ,medicine.medical_specialty ,feticide ,medicine.medical_treatment ,Context (language use) ,03 medical and health sciences ,0302 clinical medicine ,Blutverlust ,Feticide ,Maternity and Midwifery ,medicine ,GebFra Science ,blood loss ,Geburtseinleitung ,Misoprostol ,late termination ,Pregnancy ,Fetus ,030219 obstetrics & reproductive medicine ,business.industry ,Obstetrics ,Fetozid ,Obstetrics and Gynecology ,Gestational age ,Original Article/Originalarbeit ,maternales Outcome ,medicine.disease ,maternal outcome ,Curettage ,Spätabbruch ,business ,Obstetric Procedure ,030217 neurology & neurosurgery ,medicine.drug - Abstract
Background In Germany, the highly sensitive issue of late terminations of pregnancy and feticide is regulated in Sec. 218a para. 2 of the German Penal Code (medical indication). This study aimed to investigate the prenatal obstetric approach after feticide and the rate of maternal complications. Material and Methods All feticides of singleton pregnancies carried out at Leipzig University Hospital (n = 164) in the period between 01/2016 and 12/2019 were retrospectively analyzed. Selective feticides of multiple pregnancies were excluded from the study. Target indicators for the prenatal obstetric approach were sonographic accuracy of estimation, method used to induce feticide, time between feticide and delivery, and whether curettage was required. The rate of maternal complications was defined as blood loss of ≥ 500 ml. Results The number of feticides as a percentage of the total number of births during the investigation period was 1.6%. None of the terminations were performed primarily because of a serious risk to the motherʼs physical health; all of the indications to terminate the pregnancy were based on the psychosocial burden and the risk to the motherʼs mental health as outlined in Sec. 218a StGB (German Penal Code). The most common fetal diagnoses in the context of a maternal psychosocial emergency were central nervous system abnormalities (29.3%), numerical chromosomal aberrations (29.3%) and structural chromosomal aberrations/syndromes (21.3%). Sonographic measurements were used to estimate fetal weight and the weight of around half of the fetuses was underestimated (− 121.8 ± 155.8 g). The margin of estimation error increased with increasing gestational age (p Conclusion Late terminations of pregnancy carried out in accordance with Sec. 218a para. 2 StGB are a reality and must be understood and accepted as a possible consequence of modern prenatal medicine. The complication rate after feticide and the subsequent obstetric procedure was 10% for the above-defined maternal complication. Late terminations and their obstetric management should be carried out in specialized perinatal centers which offer interprofessional expertise.
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- 2020
8. Telomere attrition and dysfunction: a potential trigger of the progeroid phenotype in nijmegen breakage syndrome
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Ryong Kim, Reinhard Voss, Heidemarie Neitzel, Kathrin Jäger, Martin Digweed, Raneem Habib, Ilja Demuth, Krystyna H. Chrzanowska, Michael Walter, Eva Seemanova, Karl Sperling, and Renaldo Faber
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Male ,Aging ,Telomerase ,Heterozygote ,Adolescent ,DNA repair ,telomere-position effect over long distances ,Cell Cycle Proteins ,Mice, Transgenic ,nijmegen breakage syndrome ,Biology ,medicine.disease_cause ,Progeroid syndromes ,Mice ,Young Adult ,Progeria ,Cell Line, Tumor ,medicine ,Animals ,Humans ,Child ,alternative lengthening of telomeres ,Mutation ,Homozygote ,food and beverages ,Infant ,Nuclear Proteins ,Telomere Homeostasis ,Heterozygote advantage ,Cell Biology ,Telomere ,medicine.disease ,Nibrin ,Disease Models, Animal ,Child, Preschool ,Karyotyping ,embryonic structures ,Cancer research ,Female ,nibrin ,Nijmegen breakage syndrome ,Research Paper - Abstract
Background Nibrin, as part of the NBN/MRE11/RAD50 complex, is mutated in Nijmegen breakage syndrome (NBS), which leads to impaired DNA damage response and lymphoid malignancy. Results Telomere length (TL) was markedly reduced in homozygous patients (and comparably so in all chromosomes) by ~40% (qPCR) and was slightly reduced in NBS heterozygotes older than 30 years (~25% in qPCR), in accordance with the respective cancer rates. Humanized cancer-free NBS mice had normal TL. Telomere elongation was inducible by telomerase and/or alternative telomere lengthening but was associated with abnormal expression of telomeric genes involved in aging and/or cell growth. Lymphoblastoid cells from NBS patients with long survival times (>12 years) displayed the shortest telomeres and low caspase 7 activity. Conclusions NBS is a secondary telomeropathy. The two-edged sword of telomere attrition enhances the cancer-prone situation in NBS but can also lead to a relatively stable cellular phenotype in tumor survivors. Results suggest a modular model for progeroid syndromes with abnormal expression of telomeric genes as a molecular basis. Methods We studied TL and function in 38 homozygous individuals, 27 heterozygotes, one homozygous fetus, six NBS lymphoblastoid cell lines, and humanized NBS mice, all with the same founder NBN mutation: c.657_661del5.
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- 2020
9. Vermeidbare Fetozide- eine 1 Jahresanalyse der späten Schwangerschaftsabbrüche an 2 Zentren für Pränatale Medizin
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Renaldo Faber, Holger Stepan, and S Riße
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- 2019
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10. Vermeidbare Fetozide – eine 1-Jahresanalyse der späten Schwangerschaftsabbrüche an zwei Zentren für Pränatale Medizin
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Holger Stepan, S Riße, and Renaldo Faber
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- 2019
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11. Fallbericht eines perikardialen Teratoms
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Holger Stepan, S Riße, Renaldo Faber, S Geiler, and P Kinzel
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- 2018
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12. Höhergradige Mehrlingsschwangerschaften – Management und Ausgang
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S Riße, Holger Stepan, S Geiler, and Renaldo Faber
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Maternity and Midwifery ,Obstetrics and Gynecology - Published
- 2017
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13. Prognosekriterien bei fetalen Steißbeinteratomen
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Holger Stepan, S Geiler, S Riße, and Renaldo Faber
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- 2017
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14. Megazystis-Microcolon intestinales Hypoperistaltik-Syndrom – pränatal eine diagnostische Herausforderung – 2 Fallberichte
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S Riße, D Huhle, UH Thome, Renaldo Faber, and S Geiler
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- 2017
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15. Beurteilung des unteren Uterinsegments in der Schwangerschaft – eine diagnostische Notwendigkeit
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Renaldo Faber
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- 2015
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16. Cardiovascular variability before and after delivery: recovery from arterial stiffness in women with preeclampsia 4 days post partum
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Holger Stepan, Holger Till, Mathias Baumert, Sandra Truebner, Andreas Voss, Thomas Walther, Renaldo Faber, and Niels Wessel
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medicine.medical_specialty ,Blood Pressure ,Baroreflex ,Preeclampsia ,Young Adult ,Pre-Eclampsia ,Heart Rate ,Pregnancy ,Internal medicine ,Heart rate ,Internal Medicine ,medicine ,Humans ,Heart rate variability ,Placental Circulation ,business.industry ,Case-control study ,Obstetrics and Gynecology ,Puerperal Disorders ,medicine.disease ,Blood pressure ,Case-Control Studies ,Anesthesia ,Cardiology ,Arterial stiffness ,Female ,business - Abstract
Objective: We studied the short-term response of autonomic control to delivery in normal pregnancies and pregnancies with preeclampsia (PE). Methods: Fourteen healthy pregnant women and 13 women with PE were monitored within four days before and four days after delivery and compared to values of 14 non-pregnant women as controls using high-resolution electrocardiogram and noninvasive continuous blood pressure monitoring. Results: In PE, blood pressure remained elevated four days postpartum, but markers for arterial stiffness normalized. In contrast, none of heart rate variability and baroreflex sensitivity parameters, altered due to either pregnancy or disease, were normalized 96 h after delivery. Conclusion: Four days after delivery, the maternal cardiovascular system is still strongly affected by pregnancy independent of the health status.
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- 2013
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17. Maternal Side-Effects After Multiple Courses of Antenatal Corticosteroids (MACS): The Three- Month Follow-Up of Women in the Randomized Controlled Trial of MACS for Preterm Birth Study
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Kellie E. Murphy, Mary E. Hannah, Andrew R. Willan, Arne Ohlsson, Edmond N. Kelly, Stephen G. Matthews, Saroj Saigal, Elizabeth Asztalos, Sue Ross, Marie-France Delisle, Laura Tomat, Kofi Amankwah, Patricia Guselle, Amiram Gafni, Shoo K. Lee, B. Anthony Armson, null for the MACS Collaborative Group, MarieFrance Delisle, Sheila A. Hewson, Joanne Rovet, Renee Sananes, Isabelle Schmid, Leonardo Kwiatkowski, Susana Marisa Tortorella, Marta Susana Bertin, José Luis Castaldi, Carlos Deguer, Milton Klun, Cintia Besegato, Gustavo Izbizky, Maria Cristina Vaneri, Carlos Alberto Fustinana, Lucas Otano, Mario S.F. Palermo, Emerson Javier Murua, Dolores Montes Valera, Hector Sampietro, Antonio Monaco, Argentina Ricardo Savransky, Armando Dunaiewsky, Maria Natalia Basualdo, Elsa Andina, Ingrid Di Marco, Mabel Rivero, Maria Celeste Feu, Sergio Garcia, Jesus Daniel Aguirre, Elba Mirta Morales, Liana Elisa Ayala, Maria Teresa De Sagastizabal, Griselda Abreo, Alfredo Uranga, Raquel de Lourdes Martin, Carlos Arias, Raul Abalos Gorostiaga, Miguel Curioni, Jorge Alvarado, Carlos Fuchtner, Desiree Mostajo Flores, Dilma Maria Tonoli Tessari, Jose Mauro Madi, Dino Roberto Soares de Lorenzi, Maria do Carmo Mattana, Carla Brunstein, Alberto Trapani, Luiza Schmaltz, Goianice Ribero de Souza, Maria Elaine de Assis, Irene Angela Melo Melgaco, Renato Augusto Moreira de Sa, Rita Guerios Bornia, Nestor N Demianczuk, Elizabeth Penttinen, Kimberly Butt, Kathryn Hay, Vicki Sandwich, B Anthony Armson, Michael Vincer, Victoria Allen, Cora Fanning, Ramesh Kulkarni, Joanne Laplante, George D Carson, Suzanne Williams, Sandy Holfeld, Femi Olatunbosun, Shirley Dalton, April Henry, Janna Haughian, Jean-Marie Moutquin, Daniel Blouin, Suzanne Kocsis Bédard, Kellie Murphy, Edmond Kelly, Anne Jordan, Jodi Shapiro, Jon Barrett, Howard Cohen, Leigh Andrews, Holly Owen, Vesna Popovska, Shelley Soanes, Michael E Helewa, Doris Kenny-Lodewyks, Ricardo Gomez, Karla Silva, Jorge Figueroa Poblete, Pedro Ferrand, Cristian Belmar, Claudio Vera, Qi Feng Su, Wei Gu, Zhi Wei Liu, Martha Marrugo Flores, Carlos Malabet Santoro, Edgar Ivan Ortiz, Javier Torres, Adriana Rodriguez, Lone Hvidman, Anne Mouritzen, Jennifer Vikre-Jørgensen, Hartmut Hopp, Andreas Nonnenmacher, Ute Braig, Christoph Berg, Gabriele Bizjak, Ulrich Gembruch, Verena Schwarzer, U B Hoyme, Hans-Jorg Bittrich, Britta Oletzky, Joachim Schneider, Bettina Hollwitz, Katrin Oehler, Frank Dressler, A Kubilay Ertan, Juliane Hentschel, Annegret Mack, W. Schmidt, Renaldo Faber, Holger Stepan, Maritta Kuhnert, Susanne Stiller, Bettina Kuschel, K.T.M. Schneider, Andrea Zimmermann, Michael Krause, H Gröbe, Neslisah Terzioglu, Birgit Seelbach-Goebel, Andreas Falkert, Karin Mueller, Hana Voss, Tamas Major, Krasznai Zoärd, Tünde Bartha, Polonkai Bea, Judit Zsadänyi, Zohar Nachum, Marina Peniakov, Mordechai Hallak, Avraham Harlev, Linda Harel, Benny Chayen, Sima Siev, Ichel Samberg, Leslie Wolff, Oscar Sadan, Anat Elyassi, Carolina Baider, David Kohelet, Abraham Golan, David Mankuta, Benjamin Bar-Oz, Danielle Combs, Doron J.D. Rosen, Hagai Y. Kaneti, Tal Tzachi, Janice Zausmer, Maor Maman, Tamar Perri, Shani Taitelboum, Michal Simchen, Gilat Shalev, Michael Goldinfeld, Orit Levine, Mazen Y El-Zibdeh, Lama T Al-Faris, Hussein A Ayyash, Pedro Saona Ugarte, Krzysztof Preis, Iwona Domzalska-Popadiuk, Malgorzata Swiatkowska-Freund, Iwona Janczewska, Jan Wilczynski, Michael Krekora, Marcin Kesiak, Ewa Gulczynska, Mariola Ropacka, Mateusz Madejczyk, Joanna Rozycka, Grzegorz H Breborowicz, Marta Szymankiewicz, Nadezhda Borzova, Lubov V Posiseeva, Zulfiya Khodjaeva, Ekaterina Vikhlyaeva, Montse Palacio, Dolors Salvia, Francesc Botet, Marta Massanes, Marta Lopez, Irene Hösli, Wolfgang Holzgreve, Cora A. Voekt, Fadhil Belhia, Patrick Hohlfeld, Edmond Prince-dit-Clottu, Ernst Beinder, Ursula von Mandach, Jean-Claude Fauchere, Frans J.M.E. Roumen, Mijntje Pieters, Frans Smits, Ibrahim I Bolaji, Pauline Adiotomre, Hamed Al-Taher, Hayley Barnes, Rezan Abdul-Kadir, Claudia Chi, Vivienne Van Someren, Scott Dexter, Renee Samelson, Michael J Horgan, Cathryn Valentini, Setul Pardanani, Michael Bebbington, Cynthia Chazotte, Sarah Kilpatrick, Jessica L. Drahos, Luis Saldana, Beverly Mount, Barbara Warner, Kathy Wedig, Andrzej Lysikiewicz, Fadi Bsat, Jennie Fleming, Alison Lee, Despina Hoffman, Michael Bracken, Patricia Crowley, Allan Donner, Lelia Duley, and Jon Tyson
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Postpartum depression ,medicine.medical_specialty ,Pregnancy ,Pediatrics ,Respiratory distress ,business.industry ,Obstetrics ,Obstetrics and Gynecology ,medicine.disease ,Placebo ,law.invention ,Randomized controlled trial ,law ,Edinburgh Postnatal Depression Scale ,Medicine ,medicine.symptom ,business ,Weight gain ,Depression (differential diagnoses) - Abstract
Objective A single course of antenatal corticosteroids (ACS) is associated with a reduction in respiratory distress syndrome and neonatal death. Multiple Courses of Antenatal Corticosteroids Study (MACS), a study involving 1858 women, was a multicentre randomized placebo-controlled trial of multiple courses of ACS, given every 14 days until 33+6 weeks or birth, whichever came first. The primary outcome of the study, a composite of neonatal mortality and morbidity, was similar for the multiple ACS and placebo groups (12.9% vs. 12.5%), but infants exposed to multiple courses of ACS weighed less, were shorter, and had smaller head circumferences. Thus for women who remain at increased risk of preterm birth, multiple courses of ACS (every 14 days) are not recommended. Chronic use of corticosteroids is associated with numerous side effects including weight gain and depression The aim of this postpartum assessment was to ascertain if multiple courses of ACS were associated with maternal side effects. Methods Three months postpartum, women who participated in MACS were asked to complete a structured questionnaire that asked about maternal side effects of corticosteroid use during MACS and included the Edinburgh Postnatal Depression Scale Women were also asked to evaluate their study participation Results Of the 1858 women randomized, 1712 (92.1%) completed the postpartum questionnaire. There were no significant differences in the risk of maternal side effects between the two groups. Large numbers of women met the criteria for postpartum depression (14.1% in the ACS vs. 16.0% in the placebo group). Most women (94.1%) responded that they would participate in the trial again. Conclusion In pregnancy, corticosteroids are given to women for fetal lung maturation and for the treatment of various maternal diseases. In this international multicentre randomized controlled trial, multiple courses of ACS (every 14 days) were not associated with maternal side effects, and the majority of women responded that they would participate in such a study again.
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- 2011
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18. Out of control?!
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A Jank, E. Robel-Tillig, C. Baerwald, Holger Stepan, and Renaldo Faber
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Gynecology ,medicine.medical_specialty ,business.industry ,medicine ,Obstetrics and Gynecology ,business - Abstract
Eine schwangere Patientin, bei der eine Phenylketonurie bekannt war, wurde in der 16. Schwangerschaftswoche (SSW) wegen Verdacht auf kardiale Fehlbildung des Fetus zur Pranatalsprechstunde uberwiesen. Sonographisch zeigte sich ein Ventrikelseptumdefekt, die Entwicklung entsprach der 14. SSW. In der 25. SSW wurde bei erneuter fetaler Echokardiographie ein „double outlet right ventricle“ (DORV) diagnostiziert, die fetale Biometrie entsprach der 22. SSW. In der 40. +5 SSW kam es zur unauffalligen Spontangeburt eines hypotrophen Jungen mit Gesichtsdysmorphie. Die postnatale Echokardiographie ergab einen Rechtsaortenbogen, einen Ventrikelseptumdefekt und einen Links-rechts-Shunt sowie eine uberreitende Aorta. Der Phanotyp entsprach dem Vollbild einer Phenylketonurie-Fetopathie. Diese Fetopathie ware durch Einhalten einer phenylalaninarmen Diat seitens der Mutter vermeidbar gewesen.
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- 2009
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19. Secretory products from human adipocytes stimulate proinflammatory cytokine secretion from human endothelial cells
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Susan Kralisch, Ulrike Lossner, Michael Stumvoll, Andreas Schubert, Grit Sommer, Holger Stepan, Renaldo Faber, Matthias Blüher, Mathias Fasshauer, Angelika Vietzke, Uwe Köhler, Verena Stangl, and Publica
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Proteomics ,obesity ,medicine.medical_specialty ,Endothelium ,Adipose tissue ,adipocyte ,Biochemistry ,endothelial dysfunction ,Proinflammatory cytokine ,chemistry.chemical_compound ,Adipokine ,Adipocyte ,Internal medicine ,Paracrine Communication ,Adipocytes ,medicine ,Humans ,Molecular Biology ,Macrophage inflammatory protein ,protein array ,Cells, Cultured ,Endothelial Cells ,Proteins ,Cell Biology ,Up-Regulation ,Endothelial stem cell ,Monokine ,Endocrinology ,medicine.anatomical_structure ,chemistry ,Cytokines ,Arteriosklerose ,Cytokine secretion ,Endothelium, Vascular ,Inflammation Mediators - Abstract
Hyperplasia and hypertrophy of fat cells can be found in obesity and increased adiposity is associated with endothelial dysfunction as an early event of atherosclerosis. However, it is unclear whether human adipocytes directly influence endothelial protein secretion. To study the crosstalk between fat and endothelial cells, human umbilical venous endothelial cells (HUVECs) were cultured in infranatants (Adipo) of primary differentiated human adipocytes. Interestingly, significantly increased secretion of 23 cytokines and chemokines from HUVECs was detected in four independent experiments after Adipo stimulation by protein array analysis detecting a total of 174 different proteins. Among those, time-dependent Adipo-induced upregulation of cytokine secretion in HUVECs was confirmed by ELISA for interleukin (IL)-8, monokine induced by gamma interferon, macrophage inflammatory protein (MIP)-1beta, MIP-3alpha, monocyte chemoattractant protein-1, and IL-6. Factors besides adiponectin, leptin, resistin, and tumor necrosis factor alpha appear to mediate these stimulatory effects. Our findings suggest that endothelial cell secretion is significantly influenced towards a proinflammatory pattern by adipocyte-secreted factors.
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- 2009
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20. Potential Errors with Rapid Analysis Techniques: Partial Duplication 21q Resulting from a Paternal Paracentric Insertion Uncovered in Chorionic Villus Sampling by Fluorescence in situ Hybridization
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Ursula G. Froster, Renaldo Faber, Annegret Kujat, Lars-Christian Horn, and N. Ehrhardt
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Adult ,Male ,Embryology ,Chromosomes, Human, Pair 21 ,Chorionic villus sampling ,Prenatal diagnosis ,Biology ,Sensitivity and Specificity ,Pregnancy ,Gene duplication ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,In Situ Hybridization, Fluorescence ,Chromosomal inversion ,Chromosome Aberrations ,Genetics ,medicine.diagnostic_test ,Obstetrics and Gynecology ,Karyotype ,General Medicine ,Molecular biology ,medicine.anatomical_structure ,Chorionic Villi Sampling ,Karyotyping ,Pediatrics, Perinatology and Child Health ,Chorionic villi ,Female ,Down Syndrome ,Chromosome 21 ,Fluorescence in situ hybridization - Abstract
We report on partial duplication 21q resulting from a paternal insertion identified during prenatal diagnosis. While performing interphase fluorescence in situ hybridization (I-FISH), we were able to identify 3 signals of the LSI 21 Spectrum Orange probe with chorionic villus sampling. Using standard cytogenetic analysis, I-FISH and GTG banding, structural aberrations in 21q in the parents and in the fetus could not be reliably determined. Applying metaphase fluorescence in situ hybridization (M-FISH), we identified a recombinant chromosome 21 carrying an interstitial duplication of the Down syndrome critical region inherited from the father. Both data from our analysis and published literature recommend the use of rapid testing methods such as I-FISH and standard cytogenetic analysis in prenatal diagnosis. It became obvious that I-FISH would not detect such a particular aberration. Thus, karyotyping, I-FISH and M-FISH should be performed in all Down syndrome cases.
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- 2009
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21. Endogenous soluble receptor for advanced glycation endproducts is increased in preeclampsia
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Thomas Ebert, Matthias Blüher, Mathias Fasshauer, Jeannette Seeger, Holger Stepan, S. Schrey, Renaldo Faber, Theresa Waldeyer, Ulrike Lossner, and Michael Stumvoll
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Adult ,Glycation End Products, Advanced ,medicine.medical_specialty ,Adolescent ,Physiology ,medicine.medical_treatment ,Receptor for Advanced Glycation End Products ,Renal function ,Enzyme-Linked Immunosorbent Assay ,Preeclampsia ,Young Adult ,chemistry.chemical_compound ,Insulin resistance ,Pre-Eclampsia ,Predictive Value of Tests ,Pregnancy ,Internal medicine ,Internal Medicine ,medicine ,Humans ,Receptors, Immunologic ,Creatinine ,Adiponectin ,business.industry ,Insulin ,Hypertension, Pregnancy-Induced ,medicine.disease ,C-Reactive Protein ,Endocrinology ,chemistry ,Blood Preservation ,Multivariate Analysis ,Gestation ,Female ,Insulin Resistance ,Cardiology and Cardiovascular Medicine ,business - Abstract
OBJECTIVE Preeclampsia is a serious complication in pregnancy with an increased future cardiovascular risk for both mother and newborn. Recently, low levels of endogenous soluble receptor for advanced glycation endproducts (esRAGE) have been associated with increased cardiovascular risk. In the current study, we investigated esRAGE serum levels in patients with preeclampsia as compared to healthy gestational age-matched controls. METHODS esRAGE was quantified by enzyme-linked immunosorbent assay in controls and patients with preeclampsia during pregnancy (control: n = 20, preeclampsia: n = 16) and 6 months after delivery (control: n = 19, preeclampsia: n = 15). Furthermore, esRAGE was correlated to clinical and biochemical measures of renal function, glucose and lipid metabolism, as well as inflammation. RESULTS During pregnancy, median maternal serum esRAGE concentrations were more than three-fold higher in patients with preeclampsia (200 ng/l) than in controls (63 ng/l) (P < 0.01). Furthermore, esRAGE levels positively correlated with age, blood pressure, creatinine, adiponectin, and C-reactive protein, whereas a negative correlation existed with fasting insulin and the homeostasis model assessment of insulin resistance index. In multivariate analyses, homeostasis model assessment of insulin resistance and C-reactive protein independently predicted esRAGE serum levels and explained 44% of the variation in esRAGE concentrations. Surprisingly, median esRAGE concentrations 6 months after delivery were significantly lower in former patients with preeclampsia (270 ng/l) than in controls (342 ng/l) in contrast to the results obtained during pregnancy. CONCLUSION We showed that maternal esRAGE concentrations are significantly increased in patients with preeclampsia during pregnancy. Here, insulin sensitivity and inflammatory status independently predict serum esRAGE levels.
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- 2008
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22. Maternal Plasma Concentrations of Soluble Endoglin in Pregnancies with Intrauterine Growth Restriction
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T. Krämer, Holger Stepan, and Renaldo Faber
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Adult ,HELLP Syndrome ,medicine.medical_specialty ,Adolescent ,HELLP syndrome ,Endocrinology, Diabetes and Metabolism ,Clinical Biochemistry ,Intrauterine growth restriction ,Receptors, Cell Surface ,Context (language use) ,Biochemistry ,Preeclampsia ,Endocrinology ,Antigens, CD ,Pregnancy ,Internal medicine ,Blood plasma ,medicine ,Humans ,reproductive and urinary physiology ,Retrospective Studies ,Fetal Growth Retardation ,business.industry ,Biochemistry (medical) ,Endoglin ,Infant, Newborn ,medicine.disease ,female genital diseases and pregnancy complications ,Solubility ,embryonic structures ,Female ,business ,Soluble fms-like tyrosine kinase-1 - Abstract
Soluble endoglin (sEng), a coreceptor for TGF with antiangiogenic properties, acts synergistically with soluble fms-like tyrosine kinase 1 (sFlt1) to induce symptoms of HELLP (hemolysis, elevated liver enzymes, low platelets) syndrome in animal models and to promote a preeclamptic phenotype. Pregnant women with preeclampsia show increased sEng concentrations in circulation, whereas the sEng increase is detectable months before the clinical onset of the disease.The aim of the study was to determine whether maternal sEng is altered in pregnancies with normotensive intrauterine growth restriction (IUGR).sEng and sFlt1 were retrospectively determined by a commercial ELISA.The study included 11 normotensive pregnancies with IUGR, 18 pregnancies with manifest preeclampsia, and 15 gestational-age-matched controls.Patients with preeclampsia showed significantly higher sEng concentrations compared with controls (57.0 ng/ml vs. 5.3 ng/ml; P0.001). Also IUGR pregnancies showed significantly elevated sEng concentrations (25.9 ng/ml; P0.001), but the levels were lower compared with the preeclamptic patients. There was a strong positive correlation between the sEng and sFlt1 concentration (Pearson 0.552; P0.01). Similar to sEng, the maternal sFlt1 concentration is highest in the preeclamptic patients (8388 vs. 2602 pg/ml; P0.01) but also significantly elevated in the IUGR patients (6952 pg/ml; P0.01).Pregnancy with IUGR, but without maternal symptoms, was characterized by elevated sEng concentrations in circulation. Although this finding is less pronounced when compared with preeclampsia, sEng seems to be involved in different clinical manifestations of placental pathology.
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- 2007
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23. Monoamniale Geminigraviditäten – Betreuung von Risikoschwangerschaften
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S Riße, Holger Stepan, Renaldo Faber, and S Geiler
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Maternity and Midwifery ,Pediatrics, Perinatology and Child Health ,Obstetrics and Gynecology - Published
- 2015
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24. Monoamniale Zwillingsschwangerschaften – Betreuung und Ausgang von Hochrisikoschwangerschaften
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S Geiler, S Riße, Holger Stepan, and Renaldo Faber
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Maternity and Midwifery ,Obstetrics and Gynecology - Published
- 2015
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25. Schwierige Prognoseeinschätzung bei pränatal diagnostizierter isolierter Agenesie des Septum pellucidum
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W Hirsch, Renaldo Faber, and S Riße
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Maternity and Midwifery ,Obstetrics and Gynecology - Published
- 2015
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26. A combined technique for predicting pre-eclampsia: concurrent measurement of uterine perfusion and analysis of heart rate and blood pressure variability
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Thomas Walther, Holger Stepan, Niels Wessel, Hagen Malberg, Andreas Voss, Renaldo Faber, Internal Medicine, and Public Health
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Adult ,Physiology ,Diastole ,Blood Pressure ,Baroreflex ,Pre-Eclampsia ,Heart Rate ,Pregnancy ,Heart rate ,Internal Medicine ,Birth Weight ,Humans ,Heart rate variability ,Medicine ,Eclampsia ,business.industry ,Uterus ,Infant, Newborn ,Pregnancy Outcome ,Institut für Physik und Astronomie ,Arteries ,Prognosis ,medicine.disease ,Blood pressure ,Pregnancy Trimester, Second ,Anesthesia ,Cuff ,Female ,Cardiology and Cardiovascular Medicine ,business ,Perfusion ,Blood Flow Velocity - Abstract
Objective: Pre-eclampsia is a serious complication of pregnancy with high morbidity and mortality and an incidence of 3-5% in all pregnancies. Early prediction is still insufficient in clinical practice. Although most pre-eclamptic patients have pathological uterine perfusion in the second trimester, perfusion disturbance has a positive predictive accuracy (PPA) only of approximately 30%. Methods: Non-invasive continuous blood pressure recordings were taken simultaneously via a finger cuff for 30 min. Time series of systolic as well as diastolic beat-to-beat pressure values were extracted to analyse heart rate and blood pressure variability and baroreflex sensitivity in 102 second-trimester pregnancies, to assess predictability for pre-eclampsia (n = 16). All women underwent Doppler investigations of the uterine arteries. Results: We identified a combination of three variability and baroreflex parameters to best predict pre-eclampsia several weeks before clinical manifestation. The discriminant function of these three parameters classified patients with later pre-eclampsia with a sensitivity of 87.5%, a specificity of 83.7%, and a PPA of 50.0%. Combined with Doppler investigations of uterine arteries, PPA increased to 71.4%. Conclusions: This technique of incorporating one-stop clinical assessment of uterine perfusion and variability parameters in the second trimester produces the most effective prediction of pre-eclampsia to date.
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- 2006
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27. Umbilical Cord Hypercoiling and Thinning: A Rare Cause of Intrauterine Death in the Second Trimester of Pregnancy
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Lars-Christian Horn, Christian Wittekind, Holger Stepan, R. Robel, Eike Simon, and Renaldo Faber
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Gynecology ,Pregnancy ,Fetus ,medicine.medical_specialty ,business.industry ,Obstetrics ,Gestational age ,Autopsy ,General Medicine ,Placental insufficiency ,Abortion ,medicine.disease ,Umbilical cord ,Pathology and Forensic Medicine ,medicine.anatomical_structure ,Pediatrics, Perinatology and Child Health ,Medicine ,business ,Cause of death - Abstract
Little attention has been paid to the pathologic features of the umbilical cord, which might fatally damage the fetus. We determined the association of hypercoiling (more than 1 coil per 5 cm) and thinning with consecutive constriction of the umbilical vessels (thin cord syndrome; TCS) and intrauterine fetal death (IUFD). Three hundred and three cases of consecutive fetal autopsies over a 5-year period, including spontaneous and induced abortions of the 2nd trimester of pregnancy, were examined using a standardized protocol. The mean maternal age was 28.5 years and the mean gestational age was 19.1 weeks (range: 12.6 to 24.5 weeks). Thirty-six percent of all cases were induced abortions because of congenital malformations, and 8.9% resulted from legal abortions, as regulated by German law. One hundred sixty-seven cases (55.1%) were spontaneous abortion specimens. The leading cause for IUFD in the spontaneous abortion group was an amnion infection (34.7%), followed by abruptio placentae (15.6%). In 25.1% of cases, placental dysmaturity with consecutive placental insufficiency was responsible for IUFD. Pathologies of the umbilical cord as the cause of IUFD were seen in 10.2% of the cases. Most of these cases (15/17) involved TCS. In 14.4% of all spontaneous abortion specimens the cause of IUFD could not be determined by autopsy. There was an apparent difference in the frequency of TCS in the spontaneous abortion group (15/167 = 9%) compared to the nonspontaneous group (2/136 = 1.5%). A remarkably high percentage (17/303 = 5.6%) of all cases showed TCS. In cases of spontaneous abortions, TCS was causative for intrauterine death in 9% of cases (15/167). Careful pathologic examination of the umbilical cord is recommended to detect TCS and to reduce the cases with unexplained intrauterine death.
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- 2006
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28. Autonomic cardiovascular control in pregnancies with abnormal uterine perfusion
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Thomas Walther, Holger Stepan, V. Baier, Renaldo Faber, Mathias Baumert, Andreas Voss, Internal Medicine, and Public Health
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Adult ,medicine.medical_specialty ,Intrauterine growth restriction ,Blood Pressure ,Preeclampsia ,Pre-Eclampsia ,Heart Rate ,Pregnancy ,Internal medicine ,Heart rate ,Internal Medicine ,medicine ,Humans ,Heart rate variability ,Longitudinal Studies ,business.industry ,Uterus ,Baroreflex ,medicine.disease ,Blood pressure ,Endocrinology ,Blood Circulation ,Cardiology ,Gestation ,Female ,business ,Perfusion - Abstract
Background: Abnormal uterine perfusion is associated with the development of hypertensive pregnancy disorders. However, its impact on maternal autonomic cardiovascular control is poorly understood. The aim of our study was to investigate the adaptation of autonomic control during pregnancy with abnormal uterine perfusion with normal and pathologic outcome in comparison to normal pregnancies. based on blood pressure variability (BPV), baroreflex sensitivity (BRS), and heart rate variability (HRV) analyses. Methods: A total of 32 healthy pregnant women (CON, age 28 years, range 24 to 31 years); 16 women with abnormal uterine perfusion and normal outcome (AP-NO, age 29 years, range 28 to 33 years); and 19 women with abnormal uterine perfusion and pathologic outcome (AP-PO, age 26 years, range 25 to 30 years), were recruited for this longitudinal study. Beginning in the 20th week of pregnancy, the women were monitored every fourth week until delivery. For the analysis of BPV, BRS, and HRV, high-resolution ECG, and noninvasive continuous blood pressure (BP) recordings were taken simultaneously for 30 minutes. Results: CON showed pregnancy-induced adaptation of cardiovascular control; in the course of gestation BPV was increased while parameters of HRV and BRS were reduced. On the contrary, no changes during the second half of pregnancy could be observed in pregnancies with abnormal perfusion. Variability parameters were significantly altered in women with abnormal perfusion compared with CON, whereas these changes were more pronounced in AP-PO compared with AP-NO. Conclusions: Abnormal uterine perfusion, independently of the pregnancy outcome, has a significant impact on maternal cardiovascular control. Measures of BPV, BRS and HRV might be used for improved risk stratification.
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- 2006
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29. Proteinuria in hypertensive pregnancy diseases is associated with a longer persistence of hypertension postpartum
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Renaldo Faber, Holger Stepan, and A. K. Nordmeyer
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Adult ,Male ,medicine.medical_specialty ,HELLP syndrome ,Remission, Spontaneous ,Blood Pressure ,Gastroenterology ,Preeclampsia ,Pregnancy ,Internal medicine ,Internal Medicine ,Humans ,Medicine ,Retrospective Studies ,Proteinuria ,business.industry ,Retrospective cohort study ,Hypertension, Pregnancy-Induced ,Puerperal Disorders ,Haemolysis ,medicine.disease ,Endocrinology ,Blood pressure ,Hypertension ,Gestation ,Female ,medicine.symptom ,business - Abstract
As there is growing evidence that hypertensive pregnancy disorders are associated with a risk of cardiovascular diseases later, the resolution of hypertension postpartum (PP) is of high clinical significance. However, there is little knowledge about the factors that influence this normalization. The objectives of our study were (a) to investigate whether or not there are differences in the resolution of hypertension between the distinct types of hypertensive pregnancy disorders and (b) to analyse what clinical parameters may determine the resolution pattern PP. In this retrospective study, 52 patients with preeclampsia (PE), seven with HELLP syndrome (haemolysis, elevated liver enzymes, low platelets), 10 with chronic hypertension (CH) and 21 with pregnancy-induced hypertension (PIH) were recruited. The course of the clinical parameters until day 7 PP was documented. Patients with proteinuria (PE/HELLP) showed the highest blood pressure values PP, while patients with PIH and CH showed no blood pressure changes up to day 7 PP. In patients with proteinuric diseases, there was a significantly higher percentage of cases with persisting hypertension at day 3 PP (71% vs 48% PIH/CH group, P
- Published
- 2005
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30. Angiotensin II type 1 receptor agonistic antibodies reflect fundamental alterations in the uteroplacental vasculature
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Sabine Bartel, Holger Stepan, A Jank, Renaldo Faber, Thomas Walther, Gerd Wallukat, Heinz-Peter Schultheiss, Internal Medicine, and Public Health
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Adult ,medicine.medical_specialty ,Pregnancy Trimester, Third ,Receptor, Angiotensin, Type 1 ,Preeclampsia ,Pathogenesis ,Pre-Eclampsia ,Pregnancy ,Placenta ,Internal medicine ,Internal Medicine ,medicine ,Humans ,Placental Circulation ,reproductive and urinary physiology ,Autoantibodies ,Fetal Growth Retardation ,business.industry ,Uterus ,Autoantibody ,Trophoblast ,medicine.disease ,Angiotensin II ,medicine.anatomical_structure ,Endocrinology ,Regional Blood Flow ,Case-Control Studies ,Pregnancy Trimester, Second ,Gestation ,Female ,business ,Biomarkers - Abstract
Abnormal uterine perfusion detected by Doppler sonography reflects impaired trophoblast invasion, a factor involved in the pathogenesis of pregnancy complications such as preeclampsia or intrauterine growth retardation. Recent studies have demonstrated an autoantibody against the angiotensin type 1 (AT 1 ) receptor in pregnant women with preeclampsia. Our aim was to determine whether the AT 1 autoantibody precedes the clinical symptoms and is thus predictive of preeclampsia. We therefore detected this antibody in serum from second trimester pregnancies with abnormal uterine perfusion because these women show an indirect sign of inadequate trophoblast invasion. Then the AT 1 autoantibody distribution/concentration was compared with that of women at term with or without pregnancy pathology. The AT 1 autoantibody was already detectable in second trimester pregnant women with abnormal uterine perfusion before the clinical manifestation of preeclampsia (80%). However, it was also found in second trimester pregnant women with abnormal uterine perfusion who later developed intrauterine growth retardation (60%) or even had a normal course of pregnancy (62%). In the third trimester, the AT 1 autoantibody was demonstrated in 89% of patients with manifest preeclampsia, 86% of those with manifest intrauterine growth retardation, and even in healthy pregnant women at term with a history of abnormal uterine perfusion in the second trimester. We conclude that the AT 1 autoantibody is an early but nonspecific marker for preeclampsia. The generation of this antibody seems to be associated with distinct types of pregnancy disorders resulting from impaired placental development. The AT 1 autoantibody may thus be causative for pathological uteroplacental perfusion.
- Published
- 2005
31. Longitudinal analysis of heart rate variability in chronic hypertensive pregnancy
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Mathias Baumert, Renaldo Faber, Thomas Walther, Niels Wessel, Holger Stepan, Andreas Voss, Internal Medicine, and Public Health
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Adult ,Longitudinal study ,medicine.medical_specialty ,Time Factors ,Hypertensive pregnancy ,Physiology ,Pregnancy Trimester, Third ,Pregnancy Complications, Cardiovascular ,Elevated blood ,Heart Rate ,Pregnancy ,Internal medicine ,Internal Medicine ,medicine ,Humans ,Heart rate variability ,Longitudinal Studies ,Chronic hypertension ,business.industry ,Frequency ratio ,Significant difference ,medicine.disease ,Endocrinology ,Case-Control Studies ,Pregnancy Trimester, Second ,Chronic Disease ,Hypertension ,Cardiology ,Female ,Cardiology and Cardiovascular Medicine ,business - Abstract
In the US, it is currently estimated that 3% of pregnant women have chronic hypertension, or more than 100,000 pregnant women each year. The aim of our study was to investigate the adaptation of autonomic control during pregnancy based on heart rate variability analysis and to determine whether chronic hypertension during pregnancy has an impact on this adaptation. Sixteen pregnant women with chronic hypertension (CH group; mean age, 30 years; range, 25-33 years) and 35 healthy pregnant women serving as controls (CON group; mean age, 28 years; range, 24-30 years) were recruited for this longitudinal study. Beginning at the 20th week of pregnancy, the women were monitored every 4th week until delivery. For the analysis of heart rate variability, Portapres signals (200 Hz) were recorded for 30 min under resting conditions. Women in the CH group had significantly elevated blood pressure compared to controls (CON, 111 mmHg [105-132]; CH, 140 mmHg [132-148]; p
- Published
- 2005
32. Reduced antioxidant capacity in second-trimester pregnancies with pathological uterine perfusion
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Renaldo Faber, Holger Stepan, and Anne Heihoff-Klose
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Gynecology ,medicine.medical_specialty ,Pregnancy ,Radiological and Ultrasound Technology ,business.industry ,Uterus ,Obstetrics and Gynecology ,Intrauterine growth restriction ,General Medicine ,Blood flow ,medicine.disease ,Andrology ,medicine.anatomical_structure ,Reproductive Medicine ,In utero ,medicine ,Gestation ,Radiology, Nuclear Medicine and imaging ,Prospective cohort study ,business ,Perfusion - Abstract
Objectives To examine whether pathological perfusion in the second trimester is characterized by an altered plasma antioxidant capacity and to investigate whether the total antioxidant capacity in maternal plasma is related to the clinical outcome of these high-risk pregnancies. Methods This was a prospective cohort study that included 25 pregnancies with normal and 25 pregnancies with pathological uterine perfusion. Doppler ultrasound measurement of uterine perfusion was performed between 18 and 23 weeks of gestation. Total antioxidant capacity in maternal plasma was measured using a specific photometric assay. Results Plasma antioxidant capacity of pregnant women with pathological uterine perfusion (227.3 ± 4.0 µmol/L) was significantly lower compared with the group with normal uterine perfusion (275.2 ± 10.5 µmol/L; P < 0.05). There was a significant negative correlation between antioxidant capacity and mean pulsatility index of the uterine arteries (r = −0.363; P < 0.05). Patients with pathological perfusion and a normal course of pregnancy did not show significantly changed values compared with those patients with later pre-eclampsia or intrauterine growth restriction (235.0 ± 4.9 µmol/L vs. 218.6 ± 6.7 µmol/L). Conclusions Second-trimester pregnancies with pathological uterine perfusion are characterized by a decreased antioxidant capacity in maternal plasma. This reduction is related to the impaired uteroplacental blood flow, but does not reflect the changes characteristic of the oxidative status for diseases like pre-eclampsia since the reduction of the plasma antioxidant capacity is not related to the clinical outcome of these high-risk pregnancies. Copyright © 2004 ISUOG. Published by John Wiley & Sons, Ltd.
- Published
- 2004
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33. Identification of the causes of intrauterine death during 310 consecutive autopsies
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Christian Wittekind, Renaldo Faber, Lars-Christian Horn, Andrea Langner, and Peter Stiehl
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medicine.medical_specialty ,Placenta Diseases ,Gestational Age ,Autopsy ,Umbilical cord ,Congenital Abnormalities ,Umbilical Cord ,Pregnancy ,Placenta ,Humans ,Medicine ,Fetal Death ,Uterine Diseases ,Fetus ,Fetal Growth Retardation ,business.industry ,Obstetrics ,Obstetrics and Gynecology ,Gestational age ,medicine.disease ,Pregnancy Complications ,medicine.anatomical_structure ,Fetal Weight ,Reproductive Medicine ,Small for gestational age ,Gestation ,Female ,Pregnancy, Multiple ,business - Abstract
Objective : Evaluation of causes of death in stillborn infants. Methods : During a five-year period, 310 consecutive autopsies of stillborn infants were performed using a standardized protocol with systematic examination of all major cranial, thoracic and abdominal organs including microscopic examination. Results : In 71%, the intrauterine death (ID) occurred up to the end of the 37th week of gestation. Thirty-seven percent (115/310) stillbirths represented with maceration and about one-half with minor or major malformations. Thirty-one percent (53/171) of them were responsible for intrauterine death. In 83% (44/53), the intrauterine death of the malformed fetus occurred before the end of 37th week of gestation, most of them (48/53, 90.6%) were small for gestational age infants. In 75.5% (234/310), the placental villous tree and the umbilical cord represented pathologic conditions. In 191cases (61.1%), utero-placental pathology was responsible for intrauterine death. Intrauterine infections and traumatic lesions were accompanied by intrauterine death in 2.2 and 1.3%, respectively. In 15.2%, unexplained intrauterine death (because of severe maceration, the placenta was not available for autopsy or insufficient clinical data) occurred. Conclusions : Perinatal autopsy may be valuable in three ways: the confirmation of ante-mortem diagnoses; the identification of unexpected disorders; and exclusion of other (perhaps inheritable) conditions which might be have caused the intrauterine death. Clinically valuable information, obtained from the autopsy, can be improved by high autopsy rate and performing perinatal necropsies by specially trained pathologists.
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- 2004
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34. Dizygotic twin boys born after ICSI with maternal meiosis I-derived free trisomy 21 in the first and multiple congenital anomalies in the second: chance or common aetiology?: Case Report
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Stephanie Schönekerl, Annegret Kujat, Dieter Kotzot, Ursula G. Froster, Dirk Hausen, and Renaldo Faber
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Male ,medicine.medical_specialty ,Down syndrome ,Dizygotic twin ,medicine.medical_treatment ,Population ,Aneuploidy ,Biology ,Intracytoplasmic sperm injection ,Twins, Dizygotic ,medicine ,Humans ,Abnormalities, Multiple ,Sperm Injections, Intracytoplasmic ,Advanced maternal age ,education ,Genetics ,education.field_of_study ,Obstetrics ,Rehabilitation ,Infant, Newborn ,Obstetrics and Gynecology ,medicine.disease ,Reproductive Medicine ,Down Syndrome ,Chromosome 21 ,Trisomy - Abstract
We report on a pair of dizygotic twin boys born after ICSI. One twin was affected with maternal meiosis I-derived free trisomy 21. The other had multiple congenital malformations including a complex heart defect and oesophageal atresia. The advanced maternal age of 37 years predisposed for chromosome 21 meiosis I non-disjunction in twin A. Each of the multiple congenital anomalies in twin B has been described in trisomy 21. However, due to dizygosity demonstrated by a panel of molecular markers mapped on chromosome 21 as well as the results of investigations with 16 short tandem repeat markers localized on various other chromosomes, low level mosaicism or chimerism for this aneuploidy in twin B is unlikely. In addition, the twinning process, which by itself is associated with an increased rate of congenital malformations particularly affecting heart and oesophagus, might be responsible for the multiple congenital anomalies in twin B. Thus, in agreement with the results of several population-based studies from the literature, it appears unlikely that the micromanipulation of ICSI is causally responsible for the different anomalies found in these two boys.
- Published
- 2002
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35. Expression of C-Type Natriuretic Peptide in Human Placenta and Myometrium in Normal Pregnancies and Pregnancies Complicated by Intrauterine Growth Retardation
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Heinz-Peter Schultheiss, Stephanie Stegemann, Holger Stepan, Thomas Walther, and Renaldo Faber
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Embryology ,medicine.medical_specialty ,Growth retardation ,medicine.drug_class ,business.industry ,Myometrium ,Obstetrics and Gynecology ,Human placenta ,General Medicine ,Endocrinology ,medicine.anatomical_structure ,C-type natriuretic peptide ,Internal medicine ,Placenta ,Pediatrics, Perinatology and Child Health ,Gene expression ,medicine ,Natriuretic peptide ,Radiology, Nuclear Medicine and imaging ,business ,Hormone - Abstract
Objective: C-type natriuretic peptide (CNP) is a vasoactive hormone and the endothelial component of the natriuretic peptide system. At present, nothing is known about CNP expression in human reproductive tissue. Since CNP shows antimitogenic and vasodilatative properties, it was the aim of the study to investigate whether CNP expression is altered in placenta and myometrium from pregnancies complicated by intrauterine growth retardation. Methods: CNP expression was examined by RNase protection assay in human placenta and myometrium from six normal term pregnancies, six pregnancies with preterm delivery and six pregnancies complicated by intrauterine growth retardation (IUGR). Results: In placenta and myometrium, CNP expression levels did not differ between term and preterm pregnancies (40 vs. 28 weeks of gestation). In pregnancies with IUGR (34 weeks of gestation) placental CNP expression was significantly decreased (100.00 ± 18.6 vs. 67.09 ± 8.7; p < 0.05). In the myometrium from IUGR pregnancies CNP expression was significantly increased to 191.48 ± 42.5 (vs. 100.00 ± 15.4; p < 0.05). Conclusions: CNP is expressed in human placenta and myometrium with no dependency on gestational age in the third trimester. Pregnancies with IUGR show an opposite regulation of CNP in placenta and myometrium, which indicates an organ-specific function of the peptide in human reproductive tissue.
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- 2002
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36. PRL as a Novel Potent Cofactor for Platelet Aggregation
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Tobias Lohmann, M. Koksch, M Donné, Holger Stepan, Martin Eigenthaler, B Hentschel, Renaldo Faber, and H Wallaschofski
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Adenoma ,Adult ,Blood Platelets ,Male ,Pituitary gland ,medicine.medical_specialty ,Time Factors ,Platelet Aggregation ,P-selectin ,Endocrinology, Diabetes and Metabolism ,Clinical Biochemistry ,Pituitary neoplasm ,Biochemistry ,Endocrinology ,Pregnancy ,Reference Values ,Internal medicine ,medicine ,Humans ,Pituitary Neoplasms ,Prolactinoma ,Platelet ,Thyrotropin-Releasing Hormone ,Aged ,business.industry ,Biochemistry (medical) ,Pituitary tumors ,Middle Aged ,Blood Physiological Phenomena ,medicine.disease ,Prolactin ,Adenosine Diphosphate ,Hyperprolactinemia ,medicine.anatomical_structure ,Pituitary Gland ,Dopamine Agonists ,Female ,business - Abstract
Pregnancy (including puerperium) is a period of hypercoagulability and seems to be an independent major risk factor for venous thromboembolism (VTE). However, the basis of the increased risk of VTE in pregnancy and around delivery is unknown. We hypothesized that changes in PRL, which is a prominently increased hormone during pregnancy and lactation, might be involved in the activation of platelets. To investigate platelet functional abnormalities in pregnancy, we assessed the ADP-stimulated and nonstimulated P-selectin expression of platelets in 42 consecutive pregnant women, 22 normo- and hyperprolactinemic patients with pituitary tumors, and controls. In addition, the aggregation of platelets by human PRL in vitro was studied. We found a significant correlation between PRL values and ADP stimulation of platelets in pregnant women (r = 0.56; P < 0.0001) and patients with pituitary tumors (r = 0.57; P = 0.006). Hyperprolactinemic pregnant women or hyperprolactinemic patients with pituitary tumors revealed significantly higher ADP stimulation of platelets (P < 0.0001) than healthy controls or normoprolactinemic patients with pituitary tumors. These results were reconciled by increased in vitro stimulation and aggregation of platelets using human PRL. Our novel findings demonstrate that hyperprolactinemia causes increased platelet aggregation via ADP stimulation both in vitro and in vivo. Moreover, our data indicate that PRL may be a physiological cofactor of the delicate coagulation balance during pregnancy and puerperium that might explain the increased risk of VTE in pregnant women around delivery. Further studies of the interaction between PRL and platelets will clarify the clinical relevance of hyperprolactinemia as a potential risk factor for VTE.
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- 2001
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37. Genauigkeit pränataler Diagnosen bei terminierten Schwangerschaften - eine retrospektive Analyse der Ergebnisse und Einflussfaktoren1
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Schilde M, Renaldo Faber, Lars-Christian Horn, Holger Stepan, and Ursula G. Froster
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Fetus ,medicine.medical_specialty ,Pregnancy ,business.industry ,Obstetrics ,Obstetrics and Gynecology ,Prenatal diagnosis ,Retrospective cohort study ,Autopsy ,medicine.disease ,Umbilical cord ,medicine.anatomical_structure ,Maternity and Midwifery ,Pediatrics, Perinatology and Child Health ,Medicine ,Medical diagnosis ,business ,Pathological - Abstract
OBJECTIVE The aim of the study was to analyse the accuracy of prenatal sonography in terminated pregnancies and the influence of factors like personnel and standard of technique and organisation on the quality of prenatal sonography for the detection of fetal anomalies. MATERIAL AND METHODS The retrospective study includes 64 cases with termination of pregnancy from 1989 to 1997. We analyse prenatal sonographic and postnatal pathological findings of fetus, placenta and umbilical cord. Furthermore we compare two time periods (1989-93 and 1994-97) with different ultrasound conditions. RESULTS In 36 cases (56%) the prenatal diagnosis was exact. In 7 cases (11%) autopsy could not confirm all findings (false positive), whereas autopsy detected additional anomalies in 18 cases (28%) (false negative). The diagnosis was not correct in 3 cases (5%), whereby 2 pregnancies were terminated without proved somatic and chromosomal anomalies. Compared to 1989-93 the rate of false-positive (12 vs. 5) as well as false-negative (9 vs. 3) diagnoses decreased significantly (p < 0.002) in cases with major anomalies (heart, central nervous system). CONCLUSION We conclude that the improvement of the level of organisation, personnel and technical equipment has relevant impact on the accuracy of prenatal sonography. Autopsy as a method of quality control is absolutely necessary.
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- 2001
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38. Baroreflex sensitivity, heart rate, and blood pressure variability in normal pregnancy
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Niels Wessel, Renaldo Faber, Holger Stepan, Hagen Malberg, Andreas Voss, Thomas Walther, and Agnes Schumann
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Adult ,medicine.medical_specialty ,Blood Pressure ,Gestational Age ,Baroreflex ,Heart Rate ,Predictive Value of Tests ,Pregnancy ,Reference Values ,Internal medicine ,Heart rate ,Internal Medicine ,medicine ,Humans ,Heart rate variability ,business.industry ,Gestational age ,medicine.disease ,Autonomic nervous system ,Endocrinology ,Blood pressure ,Linear Models ,Cardiology ,Gestation ,Female ,business ,Maternal Age - Abstract
Heart rate variability is a relevant predictor of cardiovascular risk in humans. However, to use heart and blood pressure (BP) variability or baroreflex sensitivity as markers for hypertensive pregnancy disorders, it is first necessary to describe these parameters in normal pregnancy. To accommodate the complexities of autonomic cardiovascular control we added parameter domains of nonlinear dynamics to conventional linear methods of time and frequency domains. The BP of 27 women with normal pregnancy and 14 nonpregnant women were monitored at a high resolution (200 Hz sampling frequency) using a Portapres for 30 min. The pregnant women were divided into groups of 32 or less or greater than 32 weeks of gestation. Pregnant and nonpregnant women were classified into subclasses of maternal age of less than 28 or 28 or more years. Except for two single parameter domains, we found no significant differences in heart rate and BP variability for pregnant women with different gestational age or different maternal age. Moreover, no significant differences in spontaneous baroreflex sensitivity could be found between pregnant women regardless of either their age or gestational age. In contrast, all measures of nonlinear dynamics of heart rate variability as well as all parameter domains of spontaneous baroreflex sensitivity showed significant changes between pregnant and nonpregnant women, whereas BP variability did not differ between those groups. This complex assessment of autonomic cardiovascular regulation has shown that the parameters tested are stable in the second half of normal pregnancy, and might have the potential to be excellent indicators of pathophysiologic conditions.
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- 2000
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39. Persistent fetal rubella vaccine virus infection following inadvertent vaccination during early pregnancy
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Uwe G. Liebert, M. Kortung, J. Hofmann, Renaldo Faber, B. Pustowoit, and U. Piskazeck
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Congenital rubella syndrome ,business.industry ,Rubella virus ,medicine.disease ,medicine.disease_cause ,Rubella ,Virology ,Virus ,Vaccination ,Rubella vaccine ,Infectious Diseases ,Immunization ,Immunology ,medicine ,Viral shedding ,business ,medicine.drug - Abstract
Inadvertent immunisation of seronegative women with RA27/3 rubella virus live-attenuated vaccine several weeks before and after conception is described. Whereas in 5 cases the vaccine virus was not transmitted vertically, in 1 case vaccination led to the development of persistent fetal infection with prolonged virus shedding for more than 8 months. Sequence analysis carried out on isolates from amniotic fluid, from cord blood leukocytes as well as from infantile urine confirmed an infection by the vaccine strain. At birth, the newborn infant exhibited none of the symptoms compatible with the congenital rubella syndrome and signs indicative for development of late onset disease are not apparent. This observation constitutes the first unequivocal documented case of rubella vaccine virus related to persistent fetal infection.
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- 2000
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40. Postnatal intestinal disturbances in small-for-gestational-age premature infants after prenatal haemodynamic disturbances
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Renaldo Faber, E Robel-Tillig, and Chr Vogtmann
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Middle Cerebral Artery ,medicine.medical_specialty ,Gastrointestinal Diseases ,Gestational Age ,Placental insufficiency ,Ultrasonography, Prenatal ,Fetus ,Mesenteric Artery, Superior ,Internal medicine ,medicine.artery ,medicine ,Humans ,Infant, Very Low Birth Weight ,Prospective Studies ,Superior mesenteric artery ,business.industry ,Uterus ,Hemodynamics ,Infant, Newborn ,Gestational age ,Ultrasonography, Doppler ,Umbilical artery ,General Medicine ,medicine.disease ,Surgery ,Regional Blood Flow ,Infant, Small for Gestational Age ,Pediatrics, Perinatology and Child Health ,Necrotizing enterocolitis ,Cardiology ,Small for gestational age ,Female ,Gastrointestinal Motility ,Gastrointestinal function ,business ,Blood Flow Velocity ,Infant, Premature - Abstract
Uteroplacental insufficiency leads to fetal growth retardation, which is a major cause of perinatal and postnatal morbidity. In the present study we investigated the relationship between prenatal haemodynamic disturbances and postnatal intestinal perfusion and gastrointestinal function in small-for-gestational-age neonates. Prospectively, 114 preterm neonates with a birthweight below 1500 g were assigned to one of two groups according to their prenatal Doppler sonographic measurements: neonates with or without prenatal haemodynamic disturbances. We defined a pathological fetal perfusion by a pulsatility index of uterine arteries, umbilical artery and fetal thoracic aorta above the 90th percentile and by a pulsatility index of middle cerebral artery below the 10th percentile of a normal group. We compared the postnatal respiratory and intestinal adaptation in both groups as well as the blood flow velocity waveforms of the superior mesenteric artery in all neonates. Postnatally, all 36 neonates with prenatal haemodynamic disturbances were classified to be small for gestational age. Thirty-one of these neonates developed abdominal problems with delayed meconium passage, abdominal distension, bilious vomiting and a delay in tolerating in enteral feeding within the first days of life. Six of them needed surgical intervention, but none of these infants revealed typical signs of necrotizing enterocolitis. In contrast, all neonates after normal prenatal perfusion were classified to be appropriate for gestational age. Only 19 of 78 neonates of this group showed signs of intestinal disturbances postnatally. By Doppler sonographic investigations we found significant lower systolic, mean and end-diastolic flow velocities and higher pulsatility indices of the superior mesenteric artery in neonates with prenatal haemodynamic disturbances. This may occur as a result of postnatal persistent redistribution of regional blood flow and results in gastrointestinal problems and may adversely affect gut motility.
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- 2000
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41. Preliminary report: serum levels of retinol-binding protein 4 in preeclampsia
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S. Schrey, Michael Stumvoll, Jürgen Kratzsch, Thomas Ebert, Constanze Reisenbüchler, Matthias Blüher, Mathias Fasshauer, Holger Stepan, Renaldo Faber, and Patricia Tönnessen
- Subjects
Adult ,Blood Glucose ,medicine.medical_specialty ,Endocrinology, Diabetes and Metabolism ,Adipokine ,Blood Pressure ,Enzyme-Linked Immunosorbent Assay ,Kidney Function Tests ,Preeclampsia ,chemistry.chemical_compound ,Endocrinology ,Adipokines ,Pre-Eclampsia ,Pregnancy ,Reference Values ,Internal medicine ,medicine ,Birth Weight ,Humans ,Retinol binding protein 4 ,Proteinuria ,biology ,Infant, Newborn ,Pregnancy Outcome ,Retinol ,Gestational age ,Lipid metabolism ,medicine.disease ,Lipids ,Retinol binding protein ,chemistry ,Hypertension ,biology.protein ,Female ,medicine.symptom ,Retinol-Binding Proteins, Plasma - Abstract
The objective of the study was to investigate serum levels of the adipokine retinol-binding protein 4 (RBP4) in patients with preeclampsia (PE) as compared with healthy controls of similar gestational age. Retinol-binding protein 4 serum levels were quantified by enzyme-linked immunosorbent assay in control (n = 20) and PE (n = 16) patients. Mean maternal RBP4 concentrations were not significantly different in PE (24.5 mg/L) as compared with controls (22.3 mg/L). Furthermore, RBP4 did not correlate to clinical and biochemical measures of pregnancy outcome, renal function, glucose, and lipid metabolism, as well as inflammation. Our results do not support a role of RBP4 in the pathogenesis of PE.
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- 2009
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42. Prenatal detection of a giant bilateral thoracic vascular lesion: prognostic evaluation and genetic aspects
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Renaldo Faber, A. Meiner, Ursula G. Froster, Lars-Christian Horn, and H. Reichenbach
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Thorax ,Pathology ,medicine.medical_specialty ,Fetus ,Vascular disease ,business.industry ,Vascular malformation ,Obstetrics and Gynecology ,Blood volume ,medicine.disease ,Angioma ,In utero ,Heart failure ,medicine ,business ,Genetics (clinical) - Abstract
We describe a giant bilateral vascular mass in the skin of the chest diagnosed by ultrasound investigation in a fetus of 20 gestational weeks. Ultrasound and colour Doppler investigations detected no signs of early congestive heart failure but rapid and excessive enlargement of the vascular mass. Indications of increased fetal blood volume were found. The fetus had additional minor anomalies. Early in utero manifestation suggests a severe vascular malformation.
- Published
- 1999
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43. Uterusverletzung mit Folgen
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Nadja Dornhöfer, D. Baier, Holger Stepan, and Renaldo Faber
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Gynecology ,medicine.medical_specialty ,business.industry ,Reproductive medicine ,medicine ,Obstetrics and Gynecology ,business - Published
- 2008
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44. Bladder outlet obstruction causes fetal enterolithiasis in anorectal malformation with rectourinary fistula
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Holger Till, Udo Rolle, Renaldo Faber, E. Robel-Tillig, Wolfgang Hirsch, and Oliver J. Muensterer
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Male ,Meconium ,congenital, hereditary, and neonatal diseases and abnormalities ,medicine.medical_specialty ,Urinary Fistula ,medicine.medical_treatment ,Anal Canal ,Prenatal diagnosis ,Urethral stenosis ,Rectourethral fistula ,Ultrasonography, Prenatal ,Bladder outlet obstruction ,Colostomy ,Humans ,Rectal Fistula ,Medicine ,Abnormalities, Multiple ,business.industry ,Meconium peritonitis ,Infant, Newborn ,Rectum ,Calcinosis ,General Medicine ,medicine.disease ,Surgery ,Urinary Bladder Neck Obstruction ,Anal atresia ,Pediatrics, Perinatology and Child Health ,business - Abstract
Extraluminal calcified meconium is found frequently by prenatal ultrasound in cases with bowel perforation and meconium peritonitis. Intraluminal intestinal meconium calcifications are rarely seen in prenatal sonography. Meconium calcifications result from a mixture of meconium and urine that indicates a connection between intestinal and urinary tract. We report a case of a male newborn prenatally diagnosed with intraluminal echogenic calcifications at 23 weeks of gestation, suggesting an anorectal malformation (ARM) with rectourinary fistula. At birth, the child presented with a complex ARM including high anal atresia with both perineal and rectourethral fistula. Furthermore, a bladder outlet obstruction due to a urethral stenosis was diagnosed. Vesicostomy was performed as an emergency procedure followed by colostomy during neonatal period. Posterior sagittal anorectoplasty was performed at the age of 4 months. Prenatal echogenic calcifications within bowel should raise the suspicion of ARM with rectourinary fistula and bladder outlet obstruction.
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- 2008
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45. Spontane monochoriale – quadramniale Vierlingsschwangerschaft – ein Fallbericht
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J Kern, Holger Stepan, A Gottschlich, Renaldo Faber, and U Thome
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Maternity and Midwifery ,Pediatrics, Perinatology and Child Health ,Obstetrics and Gynecology - Published
- 2013
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46. Schwierige pränatale Beratungssituation und offene Prognose bei schwerer uteroplazentarer Insuffizienz in der 25. SSW
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J Hoffmann, S Riße, Renaldo Faber, Holger Stepan, and S Henjes
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Maternity and Midwifery ,Obstetrics and Gynecology - Published
- 2013
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47. Erfolgreicher Verlauf einer spontanen monochorialen - quadramnialen Vierlingsschwangerschaft
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Holger Stepan, Renaldo Faber, A Gottschlich, and U Thome
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Maternity and Midwifery ,Obstetrics and Gynecology - Published
- 2013
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48. Pre-eclampsia as a ‘Three Stage Problem’—A Workshop Report
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Thomas Walther, Berthold Huppertz, Henri Wallaschofski, Wolfram Heinritz, Ursula G. Froster, Renaldo Faber, Ralf Dechend, Holger Stepan, Public Health, and Internal Medicine
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Pregnancy ,Eclampsia ,HELLP syndrome ,business.industry ,Obstetrics and Gynecology ,Trophoblast ,Placental insufficiency ,Disease ,medicine.disease ,Bioinformatics ,female genital diseases and pregnancy complications ,Preeclampsia ,medicine.anatomical_structure ,Reproductive Medicine ,Placenta ,embryonic structures ,Immunology ,medicine ,business ,reproductive and urinary physiology ,Developmental Biology - Abstract
This workshop, held in Leipzig (Germany) on 22 September 2003, was organized to link new aspects of causative factors for pre-eclampsia to possible clinical consequences. Since aetiology and pathogenesis of pre-eclampsia are still unclear, basic pre-eclampsia research has been focused on early trophoblast development as well as maternal endothelial dysfunction as relevant factors. However, the increased knowledge of the recent past in terms of the cause of pre-eclampsia and the pathophysiological link to the syndrome has not substantially improved the opportunities for risk assessment, early prediction, and causal therapy of pre-eclampsia. At present, new aspects of trophoblast function, the role of peptide systems, and novel genetic and endocrine studies will hopefully facilitate future options for a better understanding and treatment of this pregnancy complication. The aim of this workshop was to provide an overview on some of these novel and interesting aspects of pre-eclampsia. H. Stepan demonstrated that pre-eclampsia can nowadays be understood as a ‘three-stage problem’, whereby each trimenon generates one so far unsolved problem. Stage one in the first trimester is the unknown origin of the disease. An impaired trophoblast invasion is thought to be the central factor regarding the aetiology of pre-eclampsia. However, the evidence that the early disturbance of placental development is indeed causative is still lacking. Moreover, the role of factors like hypoxia and apoptosis is not as clear as once thought. For instance, new data show decreased apoptosis in pre-eclamptic placentae and contradict to the established opinion that placental apoptosis is increased in pregnancies with pre-eclampsia and IUGR. In the second trimenon, a pathological uterine perfusion raises the problem of stage two. Easily measurable by Doppler sonography, the impaired uterine perfusion as a sign of high impedance within the uteroplacental bed has a low positive predictive value since only 35 per cent of the afflicted women develop pregnancy complication later on. Furthermore, this method for the identification of women at risk is not able to predict which clinical manifestation as a result of placental insufficiency (pre-eclampsia, IUGR, HELLP syndrome) will develop. Thus, additional markers are needed that can improve the specificity of uteroplacental perfusion and can be used in clinical practice as an adjunct to sonography. The problem at ‘stage three’ describes pre-eclampsia as a syndrome with the global maternal endothelial damage as the central pathophysiological feature. Since the number of altered markers in maternal plasma as well as placenta is enormous and various metabolic, endocrine and neuro-vegetative axes are influenced, it is difficult at this stage of the disease to
- Published
- 2004
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49. Another case of autosomal dominant exstrophy of the bladder
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Renaldo Faber, Lars-Christian Horn, Wolfram Heinritz, Ursula G. Froster, and J. Bennek
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Adult ,Male fetus ,medicine.medical_specialty ,Prenatal diagnosis ,Diagnosis, Differential ,Variable Expression ,Pregnancy ,Prenatal Diagnosis ,medicine ,Humans ,Genetic Predisposition to Disease ,Genetics (clinical) ,Ultrasonography ,Fetus ,Obstetrics ,business.industry ,Bladder Exstrophy ,Obstetrics and Gynecology ,Abortion, Induced ,medicine.disease ,Surgery ,Bladder exstrophy ,Gestation ,Female ,Differential diagnosis ,business - Abstract
Objective Exstrophy of the bladder is a rare malformation due to an anterior midline defect. Most cases of this condition with variable expression occur sporadically, but there are some cases indicative of a strong genetic component apart from environmental factors. This is a report about another rare mother–child pair with bladder exstrophy. Methods We present the clinical data of a familial case of bladder exstrophy with an affected mother and her equally affected male fetus. Results Prenatal diagnosis of bladder exstrophy in the fetus was assessed by ultrasound at the 19th gestational week and was confirmed after termination of pregnancy at the 21st gestational week. Conclusion The present case may be additional evidence for an autosomal dominant inherited variant of this malformation complex with implication for counselling of affected patients. Copyright © 2004 John Wiley & Sons, Ltd.
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- 2004
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50. First-trimester increased nuchal translucency as a prenatal sign of Zellweger syndrome
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Sibylle Strenge, Esther M. Maier, Jutta Gärtner, Renaldo Faber, Ursula G. Froster, Ania C. Muntau, Ronald J.A. Wanders, Paediatric Metabolic Diseases, and Laboratory Genetic Metabolic Diseases
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010407 polymers ,medicine.medical_specialty ,Zellweger syndrome ,030219 obstetrics & reproductive medicine ,Obstetrics ,business.industry ,Obstetrics and Gynecology ,medicine.disease ,01 natural sciences ,0104 chemical sciences ,03 medical and health sciences ,First trimester ,0302 clinical medicine ,medicine ,business ,Increased nuchal translucency ,Genetics (clinical) ,Sign (mathematics) - Published
- 2004
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