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Dewein L, Kresz A, Essers J, Bride P, Kaestner M, Apitz C. Dilated Cardiomyopathy Due to Alimentary Iron Deficiency. Children (Basel) 2024; 11:196. [PMID: 38397308 PMCID: PMC10887770 DOI: 10.3390/children11020196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/26/2024] [Accepted: 02/01/2024] [Indexed: 02/25/2024]
Abstract
Dilated cardiomyopathy (DCM) is a severe condition, characterised by left ventricular dilation and systolic dysfunction, necessitating heart transplantation when all other treatment options fail. This case report describes a 2-year-old girl initially presenting with oedema, listlessness, and severe iron deficiency anaemia. She was diagnosed with DCM. Extensive diagnostic workup ruled out other causes, leading to the suspicion of DCM due to alimentary iron deficiency. This was confirmed by the parents' report that the girl was fed almost exclusively with low-fat cow's milk. Prompt treatment, including packed red cell transfusion, iron supplementation, and heart failure medications (diuretics, ACE inhibitors, beta blockers, and aldosterone antagonists), resulted in significant improvement in cardiac function within days. This report demonstrates the potential risks of alimentary iron deficiency, the most common cause of microcytic hypochromic anaemia in young children, which might even result in the development of life-threatening cardiac dysfunction in extreme cases.
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Affiliation(s)
- Leonie Dewein
- Division of Pediatric Cardiology, University Children Hospital, Eythstr. 24, 89075 Ulm, Germany
| | - Andrea Kresz
- Division of Neonatology and Intensive Medicine, University Children Hospital, Eythstr. 24, 89075 Ulm, Germany
| | - Jochen Essers
- Division of Neonatology and Intensive Medicine, University Children Hospital, Eythstr. 24, 89075 Ulm, Germany
| | - Peter Bride
- Division of Pediatric Cardiology, University Children Hospital, Eythstr. 24, 89075 Ulm, Germany
| | - Michael Kaestner
- Division of Pediatric Cardiology, University Children Hospital, Eythstr. 24, 89075 Ulm, Germany
| | - Christian Apitz
- Division of Pediatric Cardiology, University Children Hospital, Eythstr. 24, 89075 Ulm, Germany
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Katheria A, Szychowski J, Carlo WA, Subramaniam A, Reister F, Essers J, Vora F, Martin C, Schmölzer GM, Law B, Dempsey E, O'Donoghue K, Kaempf J, Tomlinson M, Fulford K, Folsom B, Karam S, Morris R, Yanowitz T, Beck S, Clark E, DuPont T, Biniwale M, Ramanathan R, Bhat S, Hoffman M, Chouthai N, Bany-Mohammed F, Mydam J, Narendran V, Wertheimer F, Gollin Y, Vaucher Y, Arnell K, Varner M, Cutter G, Wilson N, Rich W, Finer N. Umbilical Cord Milking Versus Delayed Cord Clamping in Infants 28 to 32 Weeks: A Randomized Trial. Pediatrics 2023; 152:e2023063113. [PMID: 37941523 DOI: 10.1542/peds.2023-063113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/02/2023] [Indexed: 11/10/2023] Open
Abstract
OBJECTIVES To determine whether rate of severe intraventricular hemorrhage (IVH) or death among preterm infants receiving placental transfusion with UCM is noninferior to delayed cord clamping (DCC). METHODS Noninferiority randomized controlled trial comparing UCM versus DCC in preterm infants born 28 to 32 weeks recruited between June 2017 through September 2022 from 19 university and private medical centers in 4 countries. The primary outcome was Grade III/IV IVH or death evaluated at a 1% noninferiority margin. RESULTS Among 1019 infants (UCM n = 511 and DCC n = 508), all completed the trial from birth through initial hospitalization (mean gestational age 31 weeks, 44% female). For the primary outcome, 7 of 511 (1.4%) infants randomized to UCM developed severe IVH or died compared to 7 of 508 (1.4%) infants randomized to DCC (rate difference 0.01%, 95% confidence interval: (-1.4% to 1.4%), P = .99). CONCLUSIONS In this randomized controlled trial of UCM versus DCC among preterm infants born between 28 and 32 weeks' gestation, there was no difference in the rates of severe IVH or death. UCM may be a safe alternative to DCC in premature infants born at 28 to 32 weeks who require resuscitation.
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Affiliation(s)
- Anup Katheria
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, California
| | | | | | | | - Frank Reister
- Department of Pediatrics and Obstetrics, University of Ulm, Ulm, Germany
| | - Jochen Essers
- Department of Pediatrics and Obstetrics, University of Ulm, Ulm, Germany
| | - Farha Vora
- Department of Pediatrics and Obstetrics, Loma Linda University, Loma Linda, California
| | - Courtney Martin
- Department of Pediatrics and Obstetrics, Loma Linda University, Loma Linda, California
| | - Georg M Schmölzer
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Brenda Law
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Eugene Dempsey
- Department of Pediatrics and Obstetrics, University College Cork, Cork, Ireland
| | - Keelin O'Donoghue
- Department of Pediatrics and Obstetrics, University College Cork, Cork, Ireland
| | - Joseph Kaempf
- Women and Children's Services, Providence St Vincent Medical Center, Portland, Oregon
| | - Mark Tomlinson
- Women and Children's Services, Providence St Vincent Medical Center, Portland, Oregon
| | - Kevin Fulford
- Department of Pediatrics and Obstetrics, Sharp Grossmont Hospital, La Mesa, California
| | - Bergen Folsom
- Department of Pediatrics and Obstetrics, Sharp Grossmont Hospital, La Mesa, California
| | - Simon Karam
- Department of Pediatrics and Obstetrics, University of Mississippi Medical CenterJackson, Mississippi
| | - Rachael Morris
- Department of Pediatrics and Obstetrics, University of Mississippi Medical CenterJackson, Mississippi
| | - Toby Yanowitz
- Department of Pediatrics and Obstetrics, Magee Women's Hospital of UPMC, Pittsburgh, Pennsylvania
| | - Stacy Beck
- Department of Pediatrics and Obstetrics, Magee Women's Hospital of UPMC, Pittsburgh, Pennsylvania
| | - Erin Clark
- University of Utah, Department of Pediatrics and Obstetrics, Salt Lake City, Utah
| | - Tara DuPont
- University of Utah, Department of Pediatrics and Obstetrics, Salt Lake City, Utah
| | - Manoj Biniwale
- Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Rangasamy Ramanathan
- Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Shazia Bhat
- Department of Pediatrics and Obstetrics, Christiana Care Health System, Newark, Delaware
| | - Matthew Hoffman
- Department of Pediatrics and Obstetrics, Christiana Care Health System, Newark, Delaware
| | - Nitin Chouthai
- Department of Pediatrics, Saint Louis University School of Medicine, St Louis, Missouri
| | - Fayez Bany-Mohammed
- Department of Pediatrics, University of California, Irvine, School of Medicine, Orange, California
| | - Janardhan Mydam
- Department of Pediatrics, John H. Stroger, Jr Hospital of Cook County, Chicago, Illinois
| | - Vivek Narendran
- Department of Pediatrics and Obstetrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Fiona Wertheimer
- Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Yvonne Gollin
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, California
| | - Yvonne Vaucher
- Department of Pediatrics, University of California at San Diego, San Diego, California
| | - Kathy Arnell
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, California
| | - Michael Varner
- University of Utah, Department of Pediatrics and Obstetrics, Salt Lake City, Utah
| | - Gary Cutter
- University of Alabama at Birmingham, Birmingham, Alabama
| | - Nicole Wilson
- University of Alabama at Birmingham, Birmingham, Alabama
| | | | - Neil Finer
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, California
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Hüner B, Essers J, Schiefele L, Schütze S, Reister F, Janni W, Deniz M. Obstetric and fetal short- and long-term outcomes of delayed-interval delivery in multiple pregnancies. J Gynecol Obstet Hum Reprod 2022; 51:102486. [DOI: 10.1016/j.jogoh.2022.102486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/07/2022] [Accepted: 10/12/2022] [Indexed: 11/07/2022]
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Kraft K, Schütze S, Essers J, Tschürtz AK, Hüner B, Janni W, Reister F. Pre-viable Preterm Premature Rupture of Membranes under 20 weeks of Pregnancy: A Retrospective Cohort Analysis for Potential Outcome Predictors. Eur J Obstet Gynecol Reprod Biol 2022; 278:177-182. [DOI: 10.1016/j.ejogrb.2022.09.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 09/18/2022] [Accepted: 09/26/2022] [Indexed: 11/04/2022]
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Katheria AC, Allman P, Szychowski JM, Essers J, Carlo WA, Schmölzer GM, Dempsey E, Yanowitz T, Kaempf J, Vora F, Bhat S, Arnell K, Rich W, Varner M. Perinatal Outcomes of Subjects Enrolled in a Multicenter Trial with a Waiver of Antenatal Consent. Am J Perinatol 2022; 39:904-908. [PMID: 33142340 PMCID: PMC8788902 DOI: 10.1055/s-0040-1719184] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVE This study aimed to determine whether outcomes differed between infants enrolled in the PREMOD2 trial and those otherwise eligible but not enrolled, and whether the use of waiver effected these differences. STUDY DESIGN The multicenter PREMOD2 (PREmature infants receiving Milking Or Delayed cord clamping) trial was approved for waiver of antenatal consent by six of the nine sites institutional review boards, while three sites exclusively used antenatal consent. Every randomized subject delivered at a site with a waiver of consent was approached for postnatal consent to allow for data collection. Four of those six sites IRBs required the study team to attempt antenatal consent when possible. Three sites exclusively used antenatal consent. RESULTS Enrolled subjects had higher Apgar scores, less use of positive pressure ventilation, a lower rate of bronchopulmonary dysplasia, and a less frequent occurrence of the combined outcome of severe intraventricular hemorrhage or death. A significantly greater number of infants were enrolled at sites with an option of waiver of consent (66 vs. 26%, risk ratio = 2.54, p < 0.001). At sites with an option of either approaching families before delivery or after delivery with a waiver of antenatal consent, those approached prior to delivery refused consent 40% (range 15-74% across six sites) of the time. CONCLUSION PREMOD2 trial demonstrated analytical validity limitations because of the variable mix of antenatal consent and waiver of consent. A waiver of antenatal consent for minimal risk interventional trials conducted during the intrapartum period will be more successful in enrolling a representative sample of low and high-risk infants if investigators are able to enroll all eligible subjects. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov identifier: NCT03019367. KEY POINTS · Waiver of consent is when informed consent cannot be obtained prior to delivery.. · Cord milking is a procedure in which blood is pushed (stripped) two to four times towards the newborn.. · Delayed clamping means the umbilical cord is not clamped immediately after birth..
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Affiliation(s)
- Anup C. Katheria
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, California
| | - Phillip Allman
- Department of Biostatistics, The UAB School of Public Health, Birmingham, Alabama
| | - Jeff M. Szychowski
- Department of Biostatistics, The UAB School of Public Health, Birmingham, Alabama
| | - Jochen Essers
- Department of Pediatrics, University of Ulm, Ulm, Germany
| | - Waldemar A. Carlo
- Department of Pediatrics, University of Alabama, Birmingham, Alabama
| | - Georg M. Schmölzer
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Eugene Dempsey
- Department of Paediatrics and INFANT Centre, University College Cork, Cork, Ireland
| | - Toby Yanowitz
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Joseph Kaempf
- Women and Children’s Services, Providence St. Vincent Medical Center, Portland, Oregon
| | - Farha Vora
- Department of Pediatrics, Loma Linda University, Loma Linda, California
| | - Shazia Bhat
- Department of Pediatrics, ChristianaCare Health System, Newark, Delaware
| | - Kathy Arnell
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, California
| | - Wade Rich
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, California
| | - Michael Varner
- Department of Obstetrics and Gynecology, University of Utah, Salt Lake City, Utah
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6
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Freudenhammer M, Karampatsas K, Le Doare K, Lander F, Armann J, Acero Moreno D, Boyle M, Buxmann H, Campbell R, Chalker V, Cunney R, Doherty L, Davies E, Efstratiou A, Elling R, Endmann M, Essers J, Hentschel R, Jones CE, Kallsen S, Kapatai G, Krüger M, Ladhani S, Lamagni T, Lindsay D, Meehan M, O'Sullivan CP, Patel D, Reynolds AJ, Roll C, Schulzke S, Smith A, Stein A, von der Wense A, Voss E, Wieg C, Härtel C, Heath PT, Henneke P. Invasive Group B Streptococcus Disease With Recurrence and in Multiples: Towards a Better Understanding of GBS Late-Onset Sepsis. Front Immunol 2021; 12:617925. [PMID: 34149682 PMCID: PMC8208644 DOI: 10.3389/fimmu.2021.617925] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 05/04/2021] [Indexed: 01/30/2023] Open
Abstract
Group B Streptococcus (GBS) is a common intestinal colonizer during the neonatal period, but also may cause late-onset sepsis or meningitis in up to 0.5% of otherwise healthy colonized infants after day 3 of life. Transmission routes and risk factors of this late-onset form of invasive GBS disease (iGBS) are not fully understood. Cases of iGBS with recurrence (n=25) and those occurring in parallel in twins/triplets (n=32) from the UK and Ireland (national surveillance study 2014/15) and from Germany and Switzerland (retrospective case collection) were analyzed to unravel shared (in affected multiples) or fixed (in recurrent disease) risk factors for GBS disease. The risk of iGBS among infants from multiple births was high (17%), if one infant had already developed GBS disease. The interval of onset of iGBS between siblings was 4.5 days and in recurrent cases 12.5 days. Disturbances of the individual microbiome, including persistence of infectious foci are suggested e.g. by high usage of perinatal antibiotics in mothers of affected multiples, and by the association of an increased risk of recurrence with a short term of antibiotics [aOR 4.2 (1.3-14.2), P=0.02]. Identical GBS serotypes in both recurrent infections and concurrently infected multiples might indicate a failed microbiome integration of GBS strains that are generally regarded as commensals in healthy infants. The dynamics of recurrent GBS infections or concurrent infections in multiples suggest individual patterns of exposure and fluctuations in host immunity, causing failure of natural niche occupation.
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Affiliation(s)
- Mirjam Freudenhammer
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Center for Pediatrics and Adolescent Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,IMM-PACT Clinician Scientist Programme, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Konstantinos Karampatsas
- Paediatric Infectious Diseases Research Group, Institute of Infection and Immunity, St. George's, University of London, London, United Kingdom
| | - Kirsty Le Doare
- Paediatric Infectious Diseases Research Group, Institute of Infection and Immunity, St. George's, University of London, London, United Kingdom
| | - Fabian Lander
- Department of Pediatrics, University Hospital and Medical Faculty Carl Gustav Carus, Technische Universität (TU) Dresden, Dresden, Germany
| | - Jakob Armann
- Department of Pediatrics, University Hospital and Medical Faculty Carl Gustav Carus, Technische Universität (TU) Dresden, Dresden, Germany
| | - Daniel Acero Moreno
- Department of Neonatology, Kinderkrankenhaus Amsterdamer Straße, Cologne, Germany
| | - Margaret Boyle
- Department of Health Northern Ireland, Belfast, United Kingdom
| | - Horst Buxmann
- Department of Pediatric and Adolescent Medicine, Division for Neonatology at the University Hospital Frankfurt, Frankfurt/Main, Germany
| | - Ruth Campbell
- Public Health Agency Northern Ireland, Belfast, United Kingdom
| | - Victoria Chalker
- Immunisation, Hepatitis and Blood Safety Department, Public Health England, London, United Kingdom
| | - Robert Cunney
- Health Service Executive, Health Protection Surveillance Centre, Dublin, Ireland.,Irish Meningitis and Sepsis Reference Laboratory, Temple Street Children's University Hospital, Dublin, Ireland
| | | | | | | | - Roland Elling
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Center for Pediatrics and Adolescent Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Matthias Endmann
- Department of Pediatric and Adolescent Medicine, St. Franziskus Hospital Ahlen, Ahlen, Germany
| | - Jochen Essers
- Department of Pediatrics, University of Ulm, Ulm, Germany
| | - Roland Hentschel
- Center for Pediatrics and Adolescent Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christine E Jones
- Faculty of Medicine and Institute for Life Sciences, University of Southampton and NIHR Southampton Clinical Research Facility and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Steffen Kallsen
- Department of Paediatrics and Youth Medicine, Klinikum Friedrichshafen, Friedrichshafen, Germany
| | - Georgia Kapatai
- Immunisation, Hepatitis and Blood Safety Department, Public Health England, London, United Kingdom
| | - Marcus Krüger
- Department of Neonatology, München Klinik Harlaching and Schwabing, Munich, Germany
| | - Shamez Ladhani
- Paediatric Infectious Diseases Research Group, Institute of Infection and Immunity, St. George's, University of London, London, United Kingdom.,Immunisation and Countermeasures Division, Public Health England, London, United Kingdom
| | - Theresa Lamagni
- National Infection Service, Public Health England, London, United Kingdom
| | - Diane Lindsay
- Scottish Microbiology Reference Laboratory, Glasgow Royal Infirmary, Glasgow, United Kingdom
| | - Mary Meehan
- Irish Meningitis and Sepsis Reference Laboratory, Temple Street Children's University Hospital, Dublin, Ireland
| | - Catherine P O'Sullivan
- Paediatric Infectious Diseases Research Group, Institute of Infection and Immunity, St. George's, University of London, London, United Kingdom
| | - Darshana Patel
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Paediatric Infectious Diseases Research Group, Institute of Infection and Immunity, St. George's, University of London, London, United Kingdom
| | | | - Claudia Roll
- Department of Neonatology, Vest Children's Hospital Datteln, University Witten-Herdecke, Witten-Herdecke, Germany
| | - Sven Schulzke
- Department of Neonatology, University Children's Hospital Basel UKBB, Basel, Switzerland
| | - Andrew Smith
- Scottish Microbiology Reference Laboratory, Glasgow Royal Infirmary, Glasgow, United Kingdom.,Glasgow Dental Hospital and School, University of Glasgow, Glasgow, United Kingdom
| | - Anja Stein
- Department of Pediatrics, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Axel von der Wense
- Neonatology and Pediatric Intensive Care, Altonaer Children's Hospital, Altonaer Kinderkrankenhaus, Hamburg, Germany
| | - Egbert Voss
- Klinik Hallerwiese-Cnopfsche Kinderklinik, Nürnberg, Germany
| | - Christian Wieg
- Department of Neonatology, Klinikum Aschaffenburg, Aschaffenburg, Germany
| | - Christoph Härtel
- Department of Pediatrics, University of Würzburg, Würzburg, Germany.,PRIMAL (Priming Immunity at the Beginning of Life) Consortium, Freiburg/Lübeck, Germany
| | - Paul T Heath
- Paediatric Infectious Diseases Research Group, Institute of Infection and Immunity, St. George's, University of London, London, United Kingdom
| | - Philipp Henneke
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Center for Pediatrics and Adolescent Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,PRIMAL (Priming Immunity at the Beginning of Life) Consortium, Freiburg/Lübeck, Germany
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7
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Franz AR, Engel C, Bassler D, Rüdiger M, Thome UH, Maier RF, Krägeloh-Mann I, Kron M, Essers J, Bührer C, Rellensmann G, Rossi R, Bittrich HJ, Roll C, Höhn T, Ehrhardt H, Avenarius S, Körner HT, Stein A, Buxmann H, Vochem M, Poets CF. Effects of Liberal vs Restrictive Transfusion Thresholds on Survival and Neurocognitive Outcomes in Extremely Low-Birth-Weight Infants: The ETTNO Randomized Clinical Trial. JAMA 2020; 324:560-570. [PMID: 32780138 PMCID: PMC7420159 DOI: 10.1001/jama.2020.10690] [Citation(s) in RCA: 105] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
IMPORTANCE Red blood cell transfusions are commonly administered to infants weighing less than 1000 g at birth. Evidence-based transfusion thresholds have not been established. Previous studies have suggested higher rates of cognitive impairment with restrictive transfusion thresholds. OBJECTIVE To compare the effect of liberal vs restrictive red blood cell transfusion strategies on death or disability. DESIGN, SETTING, AND PARTICIPANTS Randomized clinical trial conducted in 36 level III/IV neonatal intensive care units in Europe among 1013 infants with birth weights of 400 g to 999 g at less than 72 hours after birth; enrollment took place between July 14, 2011, and November 14, 2014, and follow-up was completed by January 15, 2018. INTERVENTIONS Infants were randomly assigned to liberal (n = 492) or restrictive (n = 521) red blood cell transfusion thresholds based on infants' postnatal age and current health state. MAIN OUTCOME AND MEASURES The primary outcome, measured at 24 months of corrected age, was death or disability, defined as any of cognitive deficit, cerebral palsy, or severe visual or hearing impairment. Secondary outcome measures included individual components of the primary outcome, complications of prematurity, and growth. RESULTS Among 1013 patients randomized (median gestational age at birth, 26.3 [interquartile range {IQR}, 24.9-27.6] weeks; 509 [50.2%] females), 928 (91.6%) completed the trial. Among infants in the liberal vs restrictive transfusion thresholds groups, respectively, incidence of any transfusion was 400/492 (81.3%) vs 315/521 (60.5%); median volume transfused was 40 mL (IQR, 16-73 mL) vs 19 mL (IQR, 0-46 mL); and weekly mean hematocrit was 3 percentage points higher with liberal thresholds. Among infants in the liberal vs restrictive thresholds groups, the primary outcome occurred in 200/450 (44.4%) vs 205/478 (42.9%), respectively, for a difference of 1.6% (95% CI, -4.8% to 7.9%; P = .72). Death by 24 months occurred in 38/460 (8.3%) vs 44/491 (9.0%), for a difference of -0.7% (95% CI, -4.3% to 2.9%; P = .70), cognitive deficit was observed in 154/410 (37.6%) vs 148/430 (34.4%), for a difference of 3.2% (95% CI, -3.3% to 9.6%; P = .47), and cerebral palsy occurred in 18/419 (4.3%) vs 25/443 (5.6%), for a difference of -1.3% (95% CI, -4.2% to 1.5%; P = .37), in the liberal vs the restrictive thresholds groups, respectively. In the liberal vs restrictive thresholds groups, necrotizing enterocolitis requiring surgical intervention occurred in 20/492 (4.1%) vs 28/518 (5.4%); bronchopulmonary dysplasia occurred in 130/458 (28.4%) vs 126/485 (26.0%); and treatment for retinopathy of prematurity was required in 41/472 (8.7%) vs 38/492 (7.7%). Growth at follow-up was also not significantly different between groups. CONCLUSIONS AND RELEVANCE Among infants with birth weights of less than 1000 g, a strategy of liberal blood transfusions compared with restrictive transfusions did not reduce the likelihood of death or disability at 24 months of corrected age. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT01393496.
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Affiliation(s)
- Axel R. Franz
- Center for Pediatric Clinical Studies, University Children’s Hospital Tübingen, Tübingen, Germany
- Neonatology, University Children’s Hospital Tübingen, Tübingen, Germany
| | - Corinna Engel
- Center for Pediatric Clinical Studies, University Children’s Hospital Tübingen, Tübingen, Germany
| | - Dirk Bassler
- University Hospital Zurich, Department of Neonatology, University of Zurich, Zurich, Switzerland
| | - Mario Rüdiger
- Clinic for Pediatrics, Department for Neonatology and Pediatric Intensive Care Medicine, Medical Faculty, TU Dresden, Dresden, Germany
| | - Ulrich H. Thome
- Children’s Hospital, Division of Neonatology, Department of Women and Children’s Health, University of Leipzig, Leipzig, Germany
| | - Rolf F. Maier
- Children’s Hospital, University Hospital, Philipps University Marburg, Marburg, Germany
| | - Ingeborg Krägeloh-Mann
- Department of Paediatric Neurology and Developmental Medicine, University Children’s Hospital Tübingen, Tübingen, Germany
| | - Martina Kron
- Institute for Epidemiology and Medical Biometry, University of Ulm, Ulm, Germany
| | | | | | | | | | | | - Claudia Roll
- Vestische Kinder-und Jugendklinik Datteln, Universität Witten/Herdecke, Datteln, Germany
| | - Thomas Höhn
- Neonatology and Pediatric Intensive Care, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Harald Ehrhardt
- Department of General Pediatrics and Neonatology, Justus-Liebig-University Giessen, Giessen, Germany
| | | | | | - Anja Stein
- Department of Paediatrics I, University Duisburg-Essen, Essen, Germany
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8
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Katheria AC, Szychowski JM, Essers J, Mendler MR, Dempsey EM, Schmölzer GM, Arnell K, Rich WD, Hassen K, Allman P, Varner M, Cutter GR, Finer N. Early Cardiac and Cerebral Hemodynamics with Umbilical Cord Milking Compared with Delayed Cord Clamping in Infants Born Preterm. J Pediatr 2020; 223:51-56.e1. [PMID: 32482392 PMCID: PMC7387184 DOI: 10.1016/j.jpeds.2020.04.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/13/2020] [Accepted: 04/03/2020] [Indexed: 02/09/2023]
Abstract
OBJECTIVE To evaluate changes in cerebral oxygenation, peripheral arterial oxygenation, respiratory status, and administered fraction of inspired oxygen during the first 10 minutes of life in premature infants receiving umbilical cord milking compared with delayed cord clamping (DCC). STUDY DESIGN Premature infants born at 230/7 to 276/7 weeks of gestation were randomized to umbilical cord milking or DCC. A near infrared spectroscopy sensor, pulse oximeter, and electrocardiogram electrodes were placed. Pulse rate, cerebral tissue oxygenation, peripheral oxygen saturation, airway pressure, and fraction of inspired oxygen were collected for 10 minutes in the delivery room. Longitudinal models were used to compare effects of umbilical cord milking and DCC. RESULTS Fifty-six infants had cerebral oximetry and advanced monitoring at birth. There was an increased incidence of severe intraventricular hemorrhage in infants who received umbilical cord milking compared with DCC (P = .0211). Longitudinal models suggested that peripheral oxygen saturation was higher in the umbilical cord milking group in the first 4 minutes (P = .0221) and that mean airway pressures were lower in the umbilical cord milking group after the first 7 minutes (P = .0072). No statistical differences were observed for fraction of inspired oxygen, cerebral tissue oxygenation, or heart rates. CONCLUSIONS The data suggest that the rapid transfer of blood during umbilical cord milking may facilitate lung expansion with improved pulmonary blood flow, but may also increase cerebral blood flow, resulting in severe intraventricular hemorrhage. TRIAL REGISTRATION ClinicalTrials.gov: NCT03145142.
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Affiliation(s)
- Anup C Katheria
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, CA.
| | - Jeff M Szychowski
- Department of Biostatistics at the UAB School of Public Health, Birmingham, AL, United States
| | - Jochen Essers
- Department of Pediatrics University of Ulm, Ulm, Germany
| | - Marc R Mendler
- Department of Pediatrics University of Ulm, Ulm, Germany
| | - Eugene M Dempsey
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - Georg M Schmölzer
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - Kathy Arnell
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, CA, United States
| | - Wade D Rich
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, CA, United States
| | - Kasim Hassen
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, CA, United States
| | - Phillip Allman
- Department of Biostatistics at the UAB School of Public Health, Birmingham, AL, United States
| | - Michael Varner
- Department of Obstetrics, University of Utah, Salt Lake City, UT, United States
| | - Gary R Cutter
- Department of Biostatistics at the UAB School of Public Health, Birmingham, AL, United States
| | - Neil Finer
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, CA, United States
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9
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Katheria A, Reister F, Essers J, Mendler M, Hummler H, Subramaniam A, Carlo W, Tita A, Truong G, Davis-Nelson S, Schmölzer G, Chari R, Kaempf J, Tomlinson M, Yanowitz T, Beck S, Simhan H, Dempsey E, O’Donoghue K, Bhat S, Hoffman M, Faksh A, Arnell K, Rich W, Finer N, Vaucher Y, Khanna P, Meyers M, Varner M, Allman P, Szychowski J, Cutter G. Association of Umbilical Cord Milking vs Delayed Umbilical Cord Clamping With Death or Severe Intraventricular Hemorrhage Among Preterm Infants. JAMA 2019; 322:1877-1886. [PMID: 31742630 PMCID: PMC6865839 DOI: 10.1001/jama.2019.16004] [Citation(s) in RCA: 149] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
IMPORTANCE Umbilical cord milking as an alternative to delayed umbilical cord clamping may provide equivalent benefits to preterm infants, but without delaying resuscitation. OBJECTIVE To determine whether the rates of death or severe intraventricular hemorrhage differ among preterm infants receiving placental transfusion with umbilical cord milking vs delayed umbilical cord clamping. DESIGN, SETTING, AND PARTICIPANTS Noninferiority randomized clinical trial of preterm infants (born at 23-31 weeks' gestation) from 9 university and private medical centers in 4 countries were recruited and enrolled between June 2017 and September 2018. Planned enrollment was 750 per group. However, a safety signal comprising an imbalance in the number of severe intraventricular hemorrhage events by study group was observed at the first interim analysis; enrollment was stopped based on recommendations from the data and safety monitoring board. The planned noninferiority analysis could not be conducted and a post hoc comparison was performed instead. Final date of follow-up was December 2018. INTERVENTIONS Participants were randomized to umbilical cord milking (n = 236) or delayed umbilical cord clamping (n = 238). MAIN OUTCOMES AND MEASURES The primary outcome was a composite of death or severe intraventricular hemorrhage to determine noninferiority of umbilical cord milking with a 1% noninferiority margin. RESULTS Among 540 infants randomized, 474 (88%) were enrolled and completed the trial (mean gestational age of 28 weeks; 46% female). Twelve percent (29/236) of the umbilical cord milking group died or developed severe intraventricular hemorrhage compared with 8% (20/238) of the delayed umbilical cord clamping group (risk difference, 4% [95% CI, -2% to 9%]; P = .16). Although there was no statistically significant difference in death, severe intraventricular hemorrhage was statistically significantly higher in the umbilical cord milking group than in the delayed umbilical cord clamping group (8% [20/236] vs 3% [8/238], respectively; risk difference, 5% [95% CI, 1% to 9%]; P = .02). The test for interaction between gestational age strata and treatment group was significant for severe intraventricular hemorrhage only (P = .003); among infants born at 23 to 27 weeks' gestation, severe intraventricular hemorrhage was statistically significantly higher with umbilical cord milking than with delayed umbilical cord clamping (22% [20/93] vs 6% [5/89], respectively; risk difference, 16% [95% CI, 6% to 26%]; P = .002). CONCLUSIONS AND RELEVANCE In this post hoc analysis of a prematurely terminated randomized clinical trial of umbilical cord milking vs delayed umbilical cord clamping among preterm infants born at less than 32 weeks' gestation, there was no statistically significant difference in the rate of a composite outcome of death or severe intraventricular hemorrhage, but there was a statistically significantly higher rate of severe intraventricular hemorrhage in the umbilical cord milking group. The early study termination and resulting post hoc nature of the analyses preclude definitive conclusions. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT03019367.
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Affiliation(s)
- Anup Katheria
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, California
| | - Frank Reister
- Department of Obstetrics, University of Ulm, Ulm, Germany
| | - Jochen Essers
- Department of Pediatrics, University of Ulm, Ulm, Germany
| | - Marc Mendler
- Department of Pediatrics, University of Ulm, Ulm, Germany
| | - Helmut Hummler
- Division of Neonatology, Department of Pediatrics, Sidra Medicine, Doha, Qatar
| | | | - Waldemar Carlo
- Department of Pediatrics, University of Alabama at Birmingham
| | - Alan Tita
- Department of Obstetrics, University of Alabama at Birmingham
| | - Giang Truong
- Department of Pediatrics, Loma Linda University, Loma Linda, California
| | | | - Georg Schmölzer
- Department of Pediatrics, University of Alberta, Edmonton, Canada
| | - Radha Chari
- Department of Obstetrics, University of Alberta, Edmonton, Canada
| | - Joseph Kaempf
- Women and Children’s Services, Providence St Vincent Medical Center, Portland, Oregon
| | - Mark Tomlinson
- Women and Children’s Services, Providence St Vincent Medical Center, Portland, Oregon
| | - Toby Yanowitz
- Department of Pediatrics, Magee Women’s Hospital of UPMC, Pittsburgh, Pennsylvania
| | - Stacy Beck
- Department of Obstetrics, Magee Women’s Hospital of UPMC, Pittsburgh, Pennsylvania
| | - Hyagriv Simhan
- Department of Obstetrics, Magee Women’s Hospital of UPMC, Pittsburgh, Pennsylvania
| | - Eugene Dempsey
- Department of Paediatrics and Child Health, University College Cork, Cork, Ireland
- INFANT Research Centre, University College Cork, Cork, Ireland
| | | | - Shazia Bhat
- Department of Pediatrics, Christiana Care Health System, Newark, Delaware
| | - Matthew Hoffman
- Department of Obstetrics, Christiana Care Health System, Newark, Delaware
| | - Arij Faksh
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, California
| | - Kathy Arnell
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, California
| | - Wade Rich
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, California
| | - Neil Finer
- Neonatal Research Institute, Sharp Mary Birch Hospital for Women & Newborns, San Diego, California
| | - Yvonne Vaucher
- Department of Radiology, Children’s Hospital Colorado, University of Colorado School of Medicine, Denver
| | - Paritosh Khanna
- Department of Radiology, Rady Children’s Hospital, San Diego, California
| | - Mariana Meyers
- Department of Radiology, Children’s Hospital Colorado, University of Colorado School of Medicine, Denver
| | - Michael Varner
- Department of Obstetrics and Gynecology, University of Utah, Salt Lake City
| | - Phillip Allman
- Department of Biostatistics, University of Alabama at Birmingham
| | - Jeff Szychowski
- Department of Biostatistics, University of Alabama at Birmingham
| | - Gary Cutter
- Department of Biostatistics, University of Alabama at Birmingham
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Katheria AC, Reister F, Hummler H, Essers J, Mendler M, Truong G, Davis-Nelson S, Subramaniam A, Carlo W, Yankowitz TD, Simhan H, Beck S, Kaempf J, Tomlinson M, Schmolzer G, Chari R, Dempsey E, O’Donoghue K, Bhat S, Hoffman M, Faksh A, Vaucher Y, Szychowski J, Cutter G, Varner M, Finer N. LB 1: Premature Infants Receiving Cord Milking or Delayed Cord Clamping: A Randomized Controlled Non-inferiority Trial. Am J Obstet Gynecol 2019. [DOI: 10.1016/j.ajog.2018.12.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Koch S, Essers J, Beringer O, Reister F, Hummler H, Moewes A. [EXIT - A Possible Intervention for New- and Earlyborn Babies with Severe Hydrops Fetalis and Hydrothoraces on Both Sides]. Z Geburtshilfe Neonatol 2017; 221:286-290. [PMID: 28915526 DOI: 10.1055/s-0043-117419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The EXIT (ex utero intrapartum treatment) procedure is an established method of respiratory protection, originally used in the delivery of fetuses with congenital obstructive airway diseases (tumors in the throat area, hygromas, so-called congenital high airway obstruction syndrome (CHAOS)). Meanwhile, the procedure is also carried out in large perinatal centers for pronounced diaphragmatic hernia or other special indications (EXIT to ECMO, congenital lung airway malformations (CCAM), pulmonary atresia). We present our experience with adapted EXIT procedures in 5 preterm infants with secondary generalized hydrops fetalis and pronounced bilateral hydrothoraces.
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Affiliation(s)
- Sandra Koch
- Sektion Neonatologie und Pädiatrische Intensivmedizin, Klinik für Kinder- und Jugendmedizin, Ulm
| | - Jochen Essers
- Sektion Neonatologie und Pädiatrische Intensivmedizin, Klinik für Kinder- und Jugendmedizin, Ulm
| | - Ortraud Beringer
- Sektion Neonatologie und Pädiatrische Intensivmedizin, Klinik für Kinder- und Jugendmedizin, Ulm
| | - Frank Reister
- Klinik für Frauenheilkunde und Geburtshilfe, Universitätsklinikum Ulm, Ulm
| | - Helmut Hummler
- Klinik für Kinder- und Jugendmedizin, Universitätsklinikum Ulm, Ulm
| | - Anja Moewes
- Department of Neonatology, St. Christopher's Hospital for Children, Philadelphia, United States
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12
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van der Pluijm I, van Vliet N, von der Thusen JH, Robertus JL, Ridwan Y, van Heijningen PM, van Thiel BS, Vermeij M, Hoeks SE, Buijs-Offerman RMGB, Verhagen HJM, Kanaar R, Bertoli-Avella AM, Essers J. Defective Connective Tissue Remodeling in Smad3 Mice Leads to Accelerated Aneurysmal Growth Through Disturbed Downstream TGF-β Signaling. EBioMedicine 2016; 12:280-294. [PMID: 27688095 PMCID: PMC5078606 DOI: 10.1016/j.ebiom.2016.09.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 08/29/2016] [Accepted: 09/08/2016] [Indexed: 12/15/2022] Open
Abstract
Aneurysm-osteoarthritis syndrome characterized by unpredictable aortic aneurysm formation, is caused by SMAD3 mutations. SMAD3 is part of the SMAD2/3/4 transcription factor, essential for TGF-β-activated transcription. Although TGF-β-related gene mutations result in aneurysms, the underlying mechanism is unknown. Here, we examined aneurysm formation and progression in Smad3-/- animals. Smad3-/- animals developed aortic aneurysms rapidly, resulting in premature death. Aortic wall immunohistochemistry showed no increase in extracellular matrix and collagen accumulation, nor loss of vascular smooth muscle cells (VSMCs) but instead revealed medial elastin disruption and adventitial inflammation. Remarkably, matrix metalloproteases (MMPs) were not activated in VSMCs, but rather specifically in inflammatory areas. Although Smad3-/- aortas showed increased nuclear pSmad2 and pErk, indicating TGF-β receptor activation, downstream TGF-β-activated target genes were not upregulated. Increased pSmad2 and pErk staining in pre-aneurysmal Smad3-/- aortas implied that aortic damage and TGF-β receptor-activated signaling precede aortic inflammation. Finally, impaired downstream TGF-β activated transcription resulted in increased Smad3-/- VSMC proliferation. Smad3 deficiency leads to imbalanced activation of downstream genes, no activation of MMPs in VSMCs, and immune responses resulting in rapid aortic wall dilatation and rupture. Our findings uncover new possibilities for treatment of SMAD3 patients; instead of targeting TGF-β signaling, immune suppression may be more beneficial.
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Affiliation(s)
- I van der Pluijm
- Department of Vascular Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Molecular Genetics, Cancer Genomics Netherlands, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - N van Vliet
- Department of Molecular Genetics, Cancer Genomics Netherlands, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - J H von der Thusen
- Department of Pathology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - J L Robertus
- Department of Pathology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Y Ridwan
- Department of Molecular Genetics, Cancer Genomics Netherlands, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - P M van Heijningen
- Department of Molecular Genetics, Cancer Genomics Netherlands, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - B S van Thiel
- Department of Vascular Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Molecular Genetics, Cancer Genomics Netherlands, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Pharmacology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M Vermeij
- Department of Molecular Genetics, Cancer Genomics Netherlands, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - S E Hoeks
- Department of Anesthesiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - R M G B Buijs-Offerman
- Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - H J M Verhagen
- Department of Vascular Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - R Kanaar
- Department of Molecular Genetics, Cancer Genomics Netherlands, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Radiation Oncology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - A M Bertoli-Avella
- Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - J Essers
- Department of Vascular Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Molecular Genetics, Cancer Genomics Netherlands, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Radiation Oncology, Erasmus University Medical Center, Rotterdam, The Netherlands.
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13
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Lazzarini E, Carter PR, De Boer M, Balbi C, Altieri P, Pfeffer U, Gambini E, Varesio L, Bosco MC, Coviello D, Pompilio G, Brunelli C, Cancedda R, Ameri P, Bollini S, Mcgowan J, Uppal H, Chandran S, Sarma J, Potluri R, Octavia Y, De Kleijnen MGJ, Van Thiel BS, Ridwan Y, Te Lintel Hekkert M, Van Der Pluijm I, Essers J, Hoeijmakers JH, Duncker DJ. Mechanisms of Cancer-related Cardiomyopathy67Protection against chemotherapy cardiotoxicity by the human amniotic fluid stem cell secretome: a new tool for future paracrine therapy68Hyperlipidaemia reduces mortality in breast, prostate, lung and bowel cancer69DNA-repair in cardiomyocytes is critical for maintaining cardiac function. Cardiovasc Res 2016. [DOI: 10.1093/cvr/cvw130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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14
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Ramnath NWM, Hawinkels LJAC, van Heijningen PM, te Riet L, Paauwe M, Vermeij M, Danser AHJ, Kanaar R, ten Dijke P, Essers J. Fibulin-4 deficiency increases TGF-β signalling in aortic smooth muscle cells due to elevated TGF-β2 levels. Sci Rep 2015; 5:16872. [PMID: 26607280 PMCID: PMC4660353 DOI: 10.1038/srep16872] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 10/19/2015] [Indexed: 12/18/2022] Open
Abstract
Fibulins are extracellular matrix proteins associated with elastic fibres. Homozygous Fibulin-4 mutations lead to life-threatening abnormalities such as aortic aneurysms. Aortic aneurysms in Fibulin-4 mutant mice were associated with upregulation of TGF-β signalling. How Fibulin-4 deficiency leads to deregulation of the TGF-β pathway is largely unknown. Isolated aortic smooth muscle cells (SMCs) from Fibulin-4 deficient mice showed reduced growth, which could be reversed by treatment with TGF-β neutralizing antibodies. In Fibulin-4 deficient SMCs increased TGF-β signalling was detected using a transcriptional reporter assay and by increased SMAD2 phosphorylation. Next, we investigated if the increased activity was due to increased levels of the three TGF-β isoforms. These data revealed slightly increased TGF-β1 and markedly increased TGF-β2 levels. Significantly increased TGF-β2 levels were also detectable in plasma from homozygous Fibulin-4(R/R) mice, not in wild type mice. TGF-β2 levels were reduced after losartan treatment, an angiotensin-II type-1 receptor blocker, known to prevent aortic aneurysm formation. In conclusion, we have shown increased TGF-β signalling in isolated SMCs from Fibulin-4 deficient mouse aortas, not only caused by increased levels of TGF-β1, but especially TGF-β2. These data provide new insights in the molecular interaction between Fibulin-4 and TGF-β pathway regulation in the pathogenesis of aortic aneurysms.
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Affiliation(s)
- N W M Ramnath
- Department of Genetics, Cancer Genomics Centre Netherlands, Erasmus MC, Rotterdam, The Netherlands.,Department of Vascular Surgery, Erasmus MC, Rotterdam, The Netherlands
| | - L J A C Hawinkels
- Department of Molecular Cell Biology Leiden University Medical Centre, Leiden, The Netherlands, Cancer Genomics Centre.,Department of Gastroenterology-Hepatology, Leiden University Medical Centre, Leiden, The Netherlands
| | - P M van Heijningen
- Department of Genetics, Cancer Genomics Centre Netherlands, Erasmus MC, Rotterdam, The Netherlands
| | - L te Riet
- Department of Vascular Surgery, Erasmus MC, Rotterdam, The Netherlands.,Department of Pharmacology, Erasmus MC, Rotterdam, The Netherlands
| | - M Paauwe
- Department of Molecular Cell Biology Leiden University Medical Centre, Leiden, The Netherlands, Cancer Genomics Centre
| | - M Vermeij
- Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - A H J Danser
- Department of Pharmacology, Erasmus MC, Rotterdam, The Netherlands
| | - R Kanaar
- Department of Genetics, Cancer Genomics Centre Netherlands, Erasmus MC, Rotterdam, The Netherlands.,Department of Radiation Oncology, Erasmus MC, Rotterdam, The Netherlands
| | - P ten Dijke
- Department of Molecular Cell Biology Leiden University Medical Centre, Leiden, The Netherlands, Cancer Genomics Centre
| | - J Essers
- Department of Genetics, Cancer Genomics Centre Netherlands, Erasmus MC, Rotterdam, The Netherlands.,Department of Vascular Surgery, Erasmus MC, Rotterdam, The Netherlands.,Department of Radiation Oncology, Erasmus MC, Rotterdam, The Netherlands
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15
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Hummler HD, Parys E, Mayer B, Essers J, Fuchs H, Schmid M. Risk Indicators for Air Leaks in Preterm Infants Exposed to Restrictive Use of Endotracheal Intubation. Neonatology 2015; 108:1-7. [PMID: 25825229 DOI: 10.1159/000375361] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 01/20/2015] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To identify perinatal risk indicators for air leaks in preterm infants treated with a policy of restrictive use of endotracheal intubation based on sustained inflations followed by noninvasive ventilation in the delivery room. METHODS Perinatal variables and variables of respiratory support in the delivery room were analyzed retrospectively in a cohort of 297 inborn preterm infants with a gestational age <29 weeks born in 2005-2009 in a tertiary care center with respect to their associations with air leaks. Multivariate logistic regression analysis was performed to analyze independent risk indicators. RESULTS Gestational age was 26 weeks + 0 days (22+3 to 28+6), birth weight was 790 g (265-1,660) and 270/297 survived (91.0%). A total of 63 (21.2%) developed air leaks, 32 (10.8%) pneumothorax, 44 (14.8%) pulmonary interstitial emphysema, and 1 (0.3%) pneumopericardium. The infants with air leaks had a higher risk of death (p < 0.01) and of intraventricular hemorrhage grade 3/4 (p < 0.05). Air leaks were associated with less use of prenatal steroids (p < 0.01), more frequent use of cardiac compressions (p < 0.01), use of a pressure of 30 cm H2O for sustained inflations (p < 0.05), and intubation in the delivery room (p < 0.01). After multivariate logistic regression only prenatal steroids (OR 0.41, 0.20-0.85), epinephrine (OR 3.56, 1.55-8.15) and surfactant use (OR 12.03, 3.39-42.72) remained significant. CONCLUSIONS Our approach resulted in a high survival rate but was associated with a substantial rate of air leaks, which were associated with death and severe intraventricular hemorrhage. Prenatal steroids were protective, and epinephrine and surfactant use were significant risk indicators, whereas the use of sustained inflations was not a risk factor.
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Affiliation(s)
- Helmut D Hummler
- Division of Neonatology and Pediatric Critical Care, Department of Pediatrics, Children's Hospital, University of Ulm, Ulm, Germany
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Essers J, van Steeg H, de Wit J, Swagemakers SM, Vermeij M, Hoeijmakers JH, Kanaar R. Homologous and non-homologous recombination differentially affect DNA damage repair in mice. EMBO J 2000; 19:1703-10. [PMID: 10747037 PMCID: PMC310238 DOI: 10.1093/emboj/19.7.1703] [Citation(s) in RCA: 190] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Ionizing radiation and interstrand DNA crosslinking compounds provide important treatments against cancer due to their extreme genotoxicity for proliferating cells. Both the efficacies of such treatments and the mutagenic potential of these agents are modulated by the ability of cells to repair the inflicted DNA damage. Here we demonstrate that homologous recombination-deficient mRAD54(-/-) mice are hypersensitive to ionizing radiation at the embryonic but, unexpectedly, not at the adult stage. However, at the adult stage mRAD54 deficiency dramatically aggravates the ionizing radiation sensitivity of severe combined immune deficiency (scid) mice that are impaired in DNA double-strand break repair through DNA end-joining. In contrast, regardless of developmental stage, mRAD54(-/-) mice are hypersensitive to the interstrand DNA crosslinking compound mitomycin C. These results demonstrate that the two major DNA double-strand break repair pathways in mammals have overlapping as well as specialized roles, and that the relative contribution of these pathways towards repair of ionizing radiation-induced DNA damage changes during development of the animal.
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Affiliation(s)
- J Essers
- Department of Cell Biology and Genetics, Erasmus University Rotterdam, PO Box 1738, 3000 DR Rotterdam
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Tan TL, Essers J, Citterio E, Swagemakers SM, de Wit J, Benson FE, Hoeijmakers JH, Kanaar R. Mouse Rad54 affects DNA conformation and DNA-damage-induced Rad51 foci formation. Curr Biol 1999; 9:325-8. [PMID: 10209103 DOI: 10.1016/s0960-9822(99)80142-0] [Citation(s) in RCA: 160] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Error-free repair by homologous recombination of DNA double-strand breaks induced by ionizing radiation (IR) requires the Rad52 group proteins, including Rad51 and Rad54, in the yeast Saccharomyces cerevisiae [1]. The formation of a 'joint' molecule between the damaged DNA and the homologous repair template is a key step in recombination mediated by Rad51 and stimulated by Rad54 [2] [3] [4] [5]. Mammalian homologs of Rad51 and Rad54 have been identified [2] [3] [6]. Here, we demonstrate that mouse Rad54 (mRad54) formed IR-induced nuclear foci that colocalized with mRad51. Interaction between mRad51 and mRad54 was induced by genotoxic stress, but only when lesions that required mRad54 for their repair were formed. Interestingly, mRad54 was essential for the formation of IR-induced mRad51 foci. Rad54 belongs to the SWI2/SNF2 protein family, members of which modulate protein-DNA interactions in an ATP-driven manner [7]. Results of a topological assay suggested that purified human Rad54 (hRad54) protein can unwind double-stranded (ds) DNA at the expense of ATP hydrolysis. Unwinding of the homologous repair template could promote the formation or stabilization of hRad51-mediated joint molecules. Rad54 appears to be required downstream of other Rad52 group proteins, such as Rad52 and the Rad55-Rad57 heterodimer, that assist Rad51 in interacting with the broken DNA [2] [3] [4].
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Affiliation(s)
- T L Tan
- Department of Cell Biology and Genetics, Erasmus University, Rotterdam, PO Box 1738, 3000 DR Rotterdam, The Netherlands
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Swagemakers SM, Essers J, de Wit J, Hoeijmakers JH, Kanaar R. The human RAD54 recombinational DNA repair protein is a double-stranded DNA-dependent ATPase. J Biol Chem 1998; 273:28292-7. [PMID: 9774452 DOI: 10.1074/jbc.273.43.28292] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
DNA double-strand break repair through the RAD52 homologous recombination pathway in the yeast Saccharomyces cerevisiae requires, among others, the RAD51, RAD52, and RAD54 genes. The biological importance of homologous recombination is underscored by the conservation of the RAD52 pathway from fungi to humans. The critical roles of the RAD52 group proteins in the early steps of recombination, the search for DNA homology and strand exchange, are now becoming apparent. Here, we report the purification of the human Rad54 protein. We showed that human Rad54 has ATPase activity that is absolutely dependent on double-stranded DNA. Unexpectedly, the ATPase activity appeared not absolutely required for the DNA repair function of human Rad54 in vivo. Despite the presence of amino acid sequence motifs that are conserved in a large family of DNA helicases, no helicase activity of human Rad54 was observed on a variety of different DNA substrates. Possible functions of human Rad54 in homologous recombination that couple the energy gained from ATP hydrolysis to translocation along DNA, rather than disruption of base pairing, are discussed.
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Affiliation(s)
- S M Swagemakers
- Department of Cell Biology and Genetics, Erasmus University Rotterdam, P. O. Box 1738, 3000 DR Rotterdam, The Netherlands
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Jacobs H, Fukita Y, van der Horst GT, de Boer J, Weeda G, Essers J, de Wind N, Engelward BP, Samson L, Verbeek S, de Murcia JM, de Murcia G, te Riele H, Rajewsky K. Hypermutation of immunoglobulin genes in memory B cells of DNA repair-deficient mice. J Exp Med 1998; 187:1735-43. [PMID: 9607915 PMCID: PMC2212309 DOI: 10.1084/jem.187.11.1735] [Citation(s) in RCA: 99] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
To investigate the possible involvement of DNA repair in the process of somatic hypermutation of rearranged immunoglobulin variable (V) region genes, we have analyzed the occurrence, frequency, distribution, and pattern of mutations in rearranged Vlambda1 light chain genes from naive and memory B cells in DNA repair-deficient mutant mouse strains. Hypermutation was found unaffected in mice carrying mutations in either of the following DNA repair genes: xeroderma pigmentosum complementation group (XP)A and XPD, Cockayne syndrome complementation group B (CSB), mutS homologue 2 (MSH2), radiation sensitivity 54 (RAD54), poly (ADP-ribose) polymerase (PARP), and 3-alkyladenine DNA-glycosylase (AAG). These results indicate that both subpathways of nucleotide excision repair, global genome repair, and transcription-coupled repair are not required for somatic hypermutation. This appears also to be true for mismatch repair, RAD54-dependent double-strand-break repair, and AAG-mediated base excision repair.
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Affiliation(s)
- H Jacobs
- Basel Institute for Immunology, CH-4005 Basel, Switzerland.
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Essers J, Hendriks RW, Swagemakers SM, Troelstra C, de Wit J, Bootsma D, Hoeijmakers JH, Kanaar R. Disruption of mouse RAD54 reduces ionizing radiation resistance and homologous recombination. Cell 1997; 89:195-204. [PMID: 9108475 DOI: 10.1016/s0092-8674(00)80199-3] [Citation(s) in RCA: 321] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Double-strand DNA break (DSB) repair by homologous recombination occurs through the RAD52 pathway in Saccharomyces cerevisiae. Its biological importance is underscored by the conservation of many RAD52 pathway genes, including RAD54, from fungi to humans. We have analyzed the phenotype of mouse RAD54-/- (mRAD54-/-) cells. Consistent with a DSB repair defect, these cells are sensitive to ionizing radiation, mitomycin C, and methyl methanesulfonate, but not to ultraviolet light. Gene targeting experiments demonstrate that homologous recombination in mRAD54-/- cells is reduced compared to wild-type cells. These results imply that, besides DNA end-joining mediated by DNA-dependent protein kinase, homologous recombination contributes to the repair of DSBs in mammalian cells. Furthermore, we show that mRAD54-/- mice are viable and exhibit apparently normal V(D)J and immunoglobulin class-switch recombination. Thus, mRAD54 is not required for the recombination processes that generate functional immunoglobulin and T cell receptor genes.
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Affiliation(s)
- J Essers
- Medical Genetics Center, Department of Cell Biology and Genetics, Erasmus University Rotterdam, The Netherlands
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Kanaar R, Troelstra C, Swagemakers SM, Essers J, Smit B, Franssen JH, Pastink A, Bezzubova OY, Buerstedde JM, Clever B, Heyer WD, Hoeijmakers JH. Human and mouse homologs of the Saccharomyces cerevisiae RAD54 DNA repair gene: evidence for functional conservation. Curr Biol 1996; 6:828-38. [PMID: 8805304 DOI: 10.1016/s0960-9822(02)00606-1] [Citation(s) in RCA: 115] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND Homologous recombination is of eminent importance both in germ cells, to generate genetic diversity during meiosis, and in somatic cells, to safeguard DNA from genotoxic damage. The genetically well-defined RAD52 pathway is required for these processes in the yeast Saccharomyces cerevisiae. Genes similar to those in the RAD52 group have been identified in mammals. It is not known whether this conservation of primary sequence extends to conservation of function. RESULTS Here we report the isolation of cDNAs encoding a human and a mouse homolog of RAD54. The human (hHR54) and mouse (mHR54) proteins were 48% identical to Rad54 and belonged to the SNF2/SW12 family, which is characterized by amino-acid motifs found in DNA-dependent ATPases. The hHR54 gene was mapped to chromosome 1p32, and the hHR54 protein was located in the nucleus. We found that the levels of hHR54 mRNA increased in late G1 phase, as has been found for RAD54 mRNA. The level of mHR54 mRNA was elevated in organs of germ cell and lymphoid development and increased mHR54 expression correlated with the meiotic phase of spermatogenesis. The hHR54 cDNA could partially complement the methyl methanesulfonate-sensitive phenotype of S. cerevisiae rad54 delta cells. CONCLUSIONS The tissue-specific expression of mHR54 is consistent with a role for the gene in recombination. The complementation experiments show that the DNA repair function of Rad54 is conserved from yeast to humans. Our findings underscore the fundamental importance of DNA repair pathways: even though they are complex and involve multiple proteins, they seem to be functionally conserved throughout the eukaryotic kingdom.
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Affiliation(s)
- R Kanaar
- Department of Cell Biology and Genetics, Erasmus University Rotterdam, The Netherlands.
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Müller WH, Essers J, Humbel BM, Verkleij AJ. Enrichment of Penicillium chrysogenum microbodies by isopycnic centrifugation in nycodenz as visualized with immuno-electron microscopy. Biochim Biophys Acta 1995; 1245:215-20. [PMID: 7492580 DOI: 10.1016/0304-4165(95)00106-l] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A procedure to enrich microbodies from Penicillium chrysogenum and a method to evaluate the purity and integrity of the microbodies are described. As a P. chrysogenum microbody marker acyltransferase (AT) was used. The P. chrysogenum hyphae were converted into protoplasts with Novozym 234. In Percoll-sucrose buffer the protoplasts were separated from mycelial debris after 10,000 x g centrifugation. Purified protoplasts were lysed, and the cell homogenate was centrifuged to form a 14,000 x g pellet. After 2 h, 45,000 x g isopycnic centrifugation of the 14,000 x g pellet on a continuous 20-60% nycodenz gradient, ten fractions were collected. The fractions were analyzed for AT containing microbodies by immuno-blotting and immuno-electron microscopy. The results showed that AT-microbodies are enriched in the 38% nycodenz fraction. The microbodies had a diameter of 400 to 500 nm, revealed an intact single membrane and confined AT. The estimated equilibrium density of the P. chyrsogenum microbodies was 1.20 g ml-1 as deduced from the 38% (w/v) nycodenz concentration.
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Affiliation(s)
- W H Müller
- EMSA, Utrecht University, The Netherlands
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Essers J, de Stoppelaar JM, Hoebee B. A new rat repetitive DNA family shows preferential localization on chromosome 3, 12 and Y after fluorescence in situ hybridization and contains a subfamily which is Y chromosome specific. Cytogenet Cell Genet 1995; 69:246-52. [PMID: 7698023 DOI: 10.1159/000133974] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A DNA segment, containing a so far unknown repetitive DNA sequence has been isolated by reassociation of sheared total rat genomic DNA. FISH with this probe gave a strong hybridization signal on the satellites and in the centromeric region of chromosomes 3 and 12 and on the q-arm of the Y chromosome. A much weaker signal was seen in the centromeric region of chromosomes 11, 19 and X. The repeat unit of this repetitive DNA sequence is a 195-200 bp monomer, which is tandemly repeated. Screening of a rat genomic lambda library resulted in the isolation of variant members of this repeat family. FISH results with these members showed differences in their hybridization pattern especially when posthybridization washings were performed under higher stringency. Under these conditions one phage gave a strong hybridization signal only on the Y chromosome; other phage showed only weak hybridization patterns on different chromosomes. A subclone of the Y-specific phage was sequenced and showed large sequence homology with the 195-200 bp monomer. In Southern blot experiments this Y-specific sequence detects several male specific sequences, although some cross-hybridization with closely related sequences in both male and female DNA can also be observed.
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Affiliation(s)
- J Essers
- Laboratory of Carcinogenesis and Mutagenesis, National Institute of Public Health and Environmental Protection, Bilthoven, The Netherlands
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