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Shin H, Morty RE, Sucre JM, Negretti NM, Markmann M, Hossain H, Krauss-Etschmann S, Dehmel S, Hilgendorff A. Reference genes for the developing mouse lung under consideration of biological, technical and experimental confounders. Sci Rep 2022; 12:17679. [PMID: 36271035 PMCID: PMC9587035 DOI: 10.1038/s41598-022-19071-1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 08/24/2022] [Indexed: 01/18/2023] Open
Abstract
For gene expression analysis, the raw data obtained from RT-qPCR are preferably normalized to reference genes, which should be constantly expressed regardless of experimental conditions. Selection of reference genes is particularly challenging for the developing lung because of the complex transcriptional and epigenetic regulation of genes during organ maturation and injury repair. To date, there are only limited experimental data addressing reliable reference genes for this biological circumstance. In this study, we evaluated reference genes for the lung in neonatal C57BL/6 mice under consideration of biological, technical and experimental conditions. For that, we thoroughly selected candidates from commonly used reference genes side-by-side with novel ones by analyzing publicly available microarray datasets. We performed RT-qPCR of the selected candidate genes and analyzed their expression variability using GeNorm and Normfinder. Cell-specific expression of the candidate genes was analyzed using our own single-cell RNA-sequencing data from the developing mouse lung. Depending on the investigated conditions, i.e., developmental stages, sex, RNA quality, experimental condition (hyperoxia) and cell types, distinct candidate genes demonstrated stable expression confirming their eligibility as reliable reference genes. Our results provide valuable information for the selection of proper reference genes in studies investigating the neonatal mouse lung.
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Affiliation(s)
- H. Shin
- grid.4567.00000 0004 0483 2525Institute for Lung Biology and Disease and Comprehensive Pneumology Center, Helmholtz Zentrum München, Member of German Center for Lung Research (DZL), Munich, Germany
| | - R. E. Morty
- grid.5253.10000 0001 0328 4908Department of Translational Pulmonology, University Hospital Heidelberg, Heidelberg, Germany ,Translational Lung Research Center, member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - J. M. Sucre
- grid.412807.80000 0004 1936 9916Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN USA
| | - N. M. Negretti
- grid.412807.80000 0004 1936 9916Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN USA
| | - M. Markmann
- grid.8664.c0000 0001 2165 8627Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, Justus-Liebig-University, Giessen, Germany
| | - H. Hossain
- grid.440273.6Institute of Laboratory Medicine and Microbiology, Klinikum St. Marien Amberg and Kliniken Nordoberpfalz AG, Weiden, Germany
| | - S. Krauss-Etschmann
- grid.4567.00000 0004 0483 2525Institute for Lung Biology and Disease and Comprehensive Pneumology Center, Helmholtz Zentrum München, Member of German Center for Lung Research (DZL), Munich, Germany ,grid.452624.3Present Address: Priority Area Chronic Lung Diseases, Early Life Origins of Chronic Lung Disease, Research Center Borstel, Leibniz Lung Center, German Center for Lung Research (DZL) and the Airway Research Center North (ARCN), Borstel, Germany ,grid.9764.c0000 0001 2153 9986Present Address: Institute for Experimental Medicine, Christian Albrechts University, German Center for Lung Research (DZL) and the Airway Research Center North (ARCN), Kiel, Germany
| | - S. Dehmel
- grid.4567.00000 0004 0483 2525Institute for Lung Biology and Disease and Comprehensive Pneumology Center, Helmholtz Zentrum München, Member of German Center for Lung Research (DZL), Munich, Germany ,grid.4567.00000 0004 0483 2525Present Address: Strategy, Programs, Resources (SPR), Helmholtz Zentrum München, Munich, Germany
| | - A. Hilgendorff
- grid.4567.00000 0004 0483 2525Institute for Lung Biology and Disease and Comprehensive Pneumology Center, Helmholtz Zentrum München, Member of German Center for Lung Research (DZL), Munich, Germany ,grid.5252.00000 0004 1936 973XCenter for Comprehensive Developmental Care (CDeCLMU), University Hospital, Ludwig-Maximilians-University, Munich, Germany
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Apitz C, Abdul-Khaliq H, Albini S, Beerbaum P, Dubowy KO, Gorenflo M, Hager A, Hansmann G, Hilgendorff A, Humpl T, Kaestner M, Koestenberger M, Kozlik-Feldmann R, Latus H, Michel-Behnke I, Miera O, Quandt D, Sallmon H, Schranz D, Schulze-Neick I, Stiller B, Warnecke G, Pattathu J, Lammers AE. Neue hämodynamische Definition der pulmonalen Hypertonie. Monatsschr Kinderheilkd 2019. [DOI: 10.1007/s00112-019-00792-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Zusammenfassung
Eine pathologische Druckerhöhung im pulmonalen Gefäßsystem (pulmonale Hypertonie, PH) wurde bisher definiert durch einen invasiv gemessenen mittleren pulmonalarteriellen Druck (mPAP) ≥25 mm Hg in Ruhe. Auf dem 6th World Symposium on Pulmonary Hypertension (WSPH) in Nizza 2018 wurde eine neue Definition der PH vorgeschlagen, die die Senkung der Obergrenze des normalen mPAP von 24 auf 20 mm Hg beinhaltet.
Obwohl keine Evidenz aus pädiatrischen Studien hierfür vorliegt, wurde diese neue PH-Definition (mPAP >20 mm Hg) aus Gründen der Einheitlichkeit auch von der pädiatrischen „Task Force“ des WSPH 2018 übernommen.
Die vorliegende Stellungnahme der Arbeitsgemeinschaft Pulmonale Hypertonie (AGPH) der Deutschen Gesellschaft für Pädiatrische Kardiologie und angeborene Herzfehler e. V. (DGPK) erläutert die zugrunde liegende Rationale und mögliche Konsequenzen dieser Definitionsänderung. Insbesondere stellt sie klar, dass diese Änderung der Definition aktuell keinen Einfluss auf die Verschreibung von Medikamenten zur gezielten spezifischen Therapie der pulmonalarteriellen Hypertonie hat.
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Tacke U, Weigand-Brunnhölzl H, Hilgendorff A, Giese RM, Flemmer AW, König H, Warken-Madelung B, Arens M, Hesse N, Schroeder AS. [Developmental neurology - networked medicine and new perspectives]. Nervenarzt 2017; 88:1395-1401. [PMID: 29101526 DOI: 10.1007/s00115-017-0436-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Developmental neurology is one of the major areas of neuropediatrics and is among other things (legally) responsible for monitoring the motor, cognitive and psychosocial development of all infants using standardized monitoring investigations. The special focus is on infants born at risk and/or due to premature birth before 32 weeks of gestation or a birth weight less than 1500 g. Early diagnosis of deviations from normal, age-related development is a prerequisite for early interventions, which may positively influence development and the long-term biopsychosocial prognosis of the patients. This article illustrates the available methods in developmental neurology with a focus on recent developments. Particular attention is paid to the predictive value of general movements (GM). The current development of markerless automated detection of spontaneous movements using conventional depth imaging cameras is demonstrated. Differences in spontaneous movements in infants at the age of 12 weeks are illustrated and discussed exemplified by three patients (healthy versus genetic syndrome versus cerebral palsy).
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Affiliation(s)
- U Tacke
- Abteilung für Neuropädiatrie und Entwicklung, Universitäts-Kinderspital beider Basel (UKBB), Spitalstraße 33, Postfach, 4031, Basel, Schweiz.
| | - H Weigand-Brunnhölzl
- Abteilung für Pädiatrische Neurologie und Entwicklungsneurologie LMU Zentrum - iSPZ Hauner, Kinderklinik und Kinderpoliklinik, Dr. von Haunersches Kinderspital der Universität München, München, Deutschland
| | - A Hilgendorff
- Abteilung für Pädiatrische Neurologie und Entwicklungsneurologie LMU Zentrum - iSPZ Hauner, Kinderklinik und Kinderpoliklinik, Dr. von Haunersches Kinderspital der Universität München, München, Deutschland.,Institut für Lungenbiologie Comprehensive Pneumology Center (CPC), Helmholz-Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt, München, Deutschland
| | - R M Giese
- Abteilung für Pädiatrische Neurologie und Entwicklungsneurologie LMU Zentrum - iSPZ Hauner, Kinderklinik und Kinderpoliklinik, Dr. von Haunersches Kinderspital der Universität München, München, Deutschland
| | - A W Flemmer
- Neonatologie der Kinderklinik am Perinatalzentrum, Klinikum der LMU-München, Campus Großhadern, München, Deutschland
| | - H König
- Abteilung für Pädiatrische Neurologie und Entwicklungsneurologie LMU Zentrum - iSPZ Hauner, Kinderklinik und Kinderpoliklinik, Dr. von Haunersches Kinderspital der Universität München, München, Deutschland
| | - B Warken-Madelung
- Abteilung für Pädiatrische Neurologie und Entwicklungsneurologie LMU Zentrum - iSPZ Hauner, Kinderklinik und Kinderpoliklinik, Dr. von Haunersches Kinderspital der Universität München, München, Deutschland
| | - M Arens
- Fraunhofer Institut für Optronik, Systemtechnik und Bildauswertung (IOSB), Ettlingen, Deutschland
| | - N Hesse
- Fraunhofer Institut für Optronik, Systemtechnik und Bildauswertung (IOSB), Ettlingen, Deutschland
| | - A S Schroeder
- Abteilung für Pädiatrische Neurologie und Entwicklungsneurologie LMU Zentrum - iSPZ Hauner, Kinderklinik und Kinderpoliklinik, Dr. von Haunersches Kinderspital der Universität München, München, Deutschland
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Deppe C, Zachoval R, Denk G, Delius M, Blume C, Hilgendorff A, Flemmer A, Mahner S, Hasbargen U. Schwangerschaften mit Child-B-Leberzirrhose aufgrund einer Gallengangsatresie, Fallbericht. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1592837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Förster KM, Immler S, Ensslen M, Flemmer A, Schulze A, von Poblotzki M, Genzel-Boroviczény O, Heinen F, Hilgendorff A. [Indications and concept of follow-up care of home-monitoring for premature and risk infants]. Klin Padiatr 2015; 227:72-9. [PMID: 25751680 DOI: 10.1055/s-0034-1395663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The pros and cons of home monitoring especially for premature infants with continuing apneic episodes and/or chronic lung disease are an ongoing discussion. The controversy spans socio-economic requirements, medical indication as well as patient and family needs. Here, the costs of home monitoring and follow-up care on the one hand and longer hospitalization times on the other need to be considered. This article aims to create a basis for this discussion by summarizing current evidence for the indications and considerations for differential diagnoses while also outlining the established follow-up program for these patients at the Dr. v. Hauner Children's Hospital at the Ludwig-Maximilians-University Munich, Germany.
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Affiliation(s)
- K M Förster
- Neonatologie des Dr. von Haunerschen Kinderspitals der Ludwig-Maximilians-Universität München am Perinatalzentrum Campus Großhadern, Klinikum der Universität, München
| | - S Immler
- Neonatologie des Dr. von Haunerschen Kinderspitals der Ludwig-Maximilians-Universität München am Perinatalzentrum Campus Innenstadt, Klinikum der Universität, München
| | - M Ensslen
- Pädiatrische Neurologie, Entwicklungsneurologie und Sozialpädiatrie im Dr. von Haunerschen Kinderspital der Ludwig-Maximilians-Universität München, Campus Innenstadt, Klinikum der Universität, München
| | - A Flemmer
- Neonatologie des Dr. von Haunerschen Kinderspitals der Ludwig-Maximilians-Universität München am Perinatalzentrum Campus Großhadern, Klinikum der Universität, München
| | - A Schulze
- Neonatologie des Dr. von Haunerschen Kinderspitals der Ludwig-Maximilians-Universität München am Perinatalzentrum Campus Großhadern, Klinikum der Universität, München
| | - M von Poblotzki
- Neonatologie des Dr. von Haunerschen Kinderspitals der Ludwig-Maximilians-Universität München am Perinatalzentrum Campus Innenstadt, Klinikum der Universität, München
| | - O Genzel-Boroviczény
- Neonatologie des Dr. von Haunerschen Kinderspitals der Ludwig-Maximilians-Universität München am Perinatalzentrum Campus Innenstadt, Klinikum der Universität, München
| | - F Heinen
- Pädiatrische Neurologie, Entwicklungsneurologie und Sozialpädiatrie im Dr. von Haunerschen Kinderspital der Ludwig-Maximilians-Universität München, Campus Innenstadt, Klinikum der Universität, München
| | - A Hilgendorff
- Neonatologie des Dr. von Haunerschen Kinderspitals der Ludwig-Maximilians-Universität München am Perinatalzentrum Campus Großhadern, Klinikum der Universität, München
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6
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Hilgendorff A. Diagnose und Behandlung der perinatalen Asphyxie. Monatsschr Kinderheilkd 2014. [DOI: 10.1007/s00112-014-3229-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Geisler I, Gimm T, Oak P, Koschlig M, Ballweg K, Meiners S, Hilgendorff A. Effect of stretch and hyperoxia on the stress response of the newborn mouse lung. Pneumologie 2014. [DOI: 10.1055/s-0034-1376813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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8
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Lindner U, Tutdibi E, Binot S, Monz D, Hilgendorff A, Gortner L. Levels of cytokines in umbilical cord blood in small for gestational age preterm infants. Klin Padiatr 2013; 225:70-74. [PMID: 23526611 DOI: 10.1055/s-0033-1334879] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
INTRODUCTION Being born small for gestational age (SGA) can be a reference to intrauterine growth retardation (IUGR) and is associated with increased neonatal morbidity and mortality. In pregnancies complicated by IUGR placental insufficiency is thought to be one of the leading underlying pathogenetic mechanisms. As cytokines appear to be implicated in implantation and -placental development, imbalances in cytokine levels may contribute to pregnancy disorders i. e., IUGR. OBJECTIVE Cord blood cytokine profiles were analyzed in order to characterize differences in cytokine profiles between SGA and appropriate for gestational age (AGA) preterm infants. METHODS Cytokine concentrations were measured in venous cord blood of preterm infants delivered by caesarean section without previous labour activity and without signs of maternal or fetal infection. RESULTS 93 preterm infants were enrolled, 29 SGA preterm infants (GA 31.0 (24.6-36.7) weeks; BW 1080 (315-2010) grams) and 63 AGA preterm infants (GA 33.3 (26.0-36.9) weeks; BW 1790 (760-3570) grams). In both groups multiple cytokines could be detected. Significant differences in cytokine levels between the groups were found for G-CSF, IL-12p40 and IL-8, while levels of IL-1a, IL-6, IL-10, IP-10, MCP-1, MCP-3, MIP-1a and TNF-a were not different. CONCLUSIONS Alteration of cytokine levels in SGA preterm infants may be involved in the pathogenesis of reduced intrauterine growth as well as in the higher morbidity in these infants. Further studies are needed to get more comprehension of the complex function of cytokines in pregnancies complicated by IUGR.
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Affiliation(s)
- U Lindner
- Center of Pediatrics and Neonatology, University of the Saarland, -Homburg, Germany
| | - E Tutdibi
- Center of Pediatrics and Neonatology, University of the Saarland, -Homburg, Germany
| | - S Binot
- Neonatology, Grosshadern, Ludwig-Maximilian University, Munich, -Germany
| | - D Monz
- Center of Pediatrics and Neonatology, University of the Saarland, -Homburg, Germany
| | - A Hilgendorff
- Neonatology, Grosshadern, Ludwig-Maximilian University, Munich, -Germany
| | - L Gortner
- Center of Pediatrics and Neonatology, University of the Saarland, -Homburg, Germany
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Hilgendorff A, Daiminger A, Dangel V, Kreuder J, Geidel C, Reiss I, Enders G. Oral Valganciclovir treatment in a CMV congenital infected infant with sensorineural hearing loss (SNHL) first detected at 4 months of age. Klin Padiatr 2010; 221:448-9. [PMID: 20013570 DOI: 10.1055/s-0029-1234076] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hentschel R, Dittrich F, Hilgendorff A, Wauer R, Westmeier M, Gortner L. Neurodevelopmental outcome and pulmonary morbidity two years after early versus late surfactant treatment: does it really differ? Acta Paediatr 2009; 98:654-9. [PMID: 19170659 DOI: 10.1111/j.1651-2227.2008.01216.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM To investigate whether neurodevelopmental outcome or pulmonary morbidity at age two years might be different after early versus late surfactant treatment in intubated preterm infants with severe respiratory distress syndrome (RDS). METHODS In 185 ex-preterm infants of 27-32 completed weeks of gestation, who were enrolled in a controlled trial of early versus late surfactant treatment (31 +/- 19 min vs. 202 +/- 80 min, respectively), a standardized follow up of medical history, pulmonary morbidity and neurodevelopmental outcome using the Griffiths scales were carried out. RESULTS Neurobehavioural and motor development was comparable in both groups, as was medical history and actual morbidity. However, in the early treatment group a delay in the subscale 'personal social' of the Griffiths test and in one 'milestone' of motor development (rolling over from supine to prone) was noticed, and the rate of increased muscular tone was significantly higher. CONCLUSION In terms of long-term morbidity or neurological development there is no obvious advantage of an immediate surfactant administration after intubation in preterm infants with RDS. This is in line with our results published earlier on morbidity at discharge, so improvement of gas exchange after intubation can first be awaited before surfactant is indicated.
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Affiliation(s)
- R Hentschel
- Division of Neonatology & Intensive Care, Department of Pediatrics and Adolescent Medicine, University Hospital Freiburg, Germany.
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Lindner U, Hilgendorff A, Frey G, Gortner L. Drug Utilisation in Very Preterm Infants: Any Changes during the Past Decade? Klin Padiatr 2008; 220:238-42. [DOI: 10.1055/s-2008-1046786] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hilgendorff A, Heidinger K, Pfeiffer A, Bohnert A, König IR, Ziegler A, Merz C, Frey G, Chakraborty T, Gortner L, Bein G. Erratum: Association of polymorphisms in the mannose-binding lectin gene and pulmonary morbidity in preterm infants. Genes Immun 2008. [DOI: 10.1038/gene.2008.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Hilgendorff A, Wermuth I, Letzgus A, Flemmer AW, Schulze A. Standardisiertes neurologisches Follow-up sehr kleiner Frühgeborener im Alter von 24 Monaten mit den Bayley Scales of Infant Development – Erfahrungen am Perinatalzentrum Großhadern. Z Geburtshilfe Neonatol 2008. [DOI: 10.1055/s-2008-1078830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Staffler A, Klemme M, Hilgendorff A, Schulze A, Flemmer AW. Hypoglykämien bei hyperalimentatierten extrem unreifen Frühgeborenen. Z Geburtshilfe Neonatol 2008. [DOI: 10.1055/s-2008-1078815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hilgendorff A, Heidinger K, Pfeiffer A, Bohnert A, König IR, Ziegler A, Merz C, Frey G, Chakraborty T, Gortner L, Bein G. Association of polymorphisms in the mannose-binding lectin gene and pulmonary morbidity in preterm infants. Genes Immun 2007; 8:671-7. [PMID: 17898783 DOI: 10.1038/sj.gene.6364432] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Deficiency in the collectin mannose-binding lectin (MBL) increases the risk for pulmonary and systemic infections and its complications in children and adults. The aim of this prospective cohort study was to determine the genetic association of sequence variations within the MBL gene with systemic infections and pulmonary short- and long-term complications in preterm infants below 32 weeks gestational age (GA). Three single-nucleotide polymorphisms (SNPs) in the coding region and one SNP in the promotor region of MBL2 were genotyped by direct sequencing and with sequence-specific probes in 284 newborn infants <32 weeks GA. Clinical variables were comprehensively monitored. An association was found between two SNPs and the development of bronchopulmonary dysplasia (BPD), defined as persistent oxygen requirement at 36 weeks postmenstrual age, adjusting for covariates GA, grade of respiratory distress syndrome and days on mechanical ventilation (rs1800450 (exon 1 at codon 54, B variant): odds ratio dominant model (OR)=3.59, 95% confidence interval (CI)=1.62-7.98; rs7096206 (-221, X variant): OR=2.40, 95% CI=1.16-4.96). Haplotype analyses confirmed the association to BPD, and a single haplotype (frequency 56%) including all SNPs in their wild-type form showed a negative association with the development of BPD. We detected no association between the MBL gene variations and the development of early-onset infections or further pulmonary complications. Frequent variants of the MBL gene, leading to low MBL concentrations, are associated with the diagnosis of BPD in preterm infants. This provides a basis for potential therapeutic options and further genetic and proteomic analysis of the function of MBL in the resistance against pulmonary long-term complications in preterm infants.
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Affiliation(s)
- A Hilgendorff
- Department of Paediatrics, University of Giessen and Marburg, Giessen, Germany.
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Hilgendorff A, Heidinger K, Bohnert A, König I, Merz C, Gortner L, Bein G. Association of Polymorphisms in the Mannose-Binding Lectin Gene and Pulmonary Morbidity in Preterm Infants. Z Geburtshilfe Neonatol 2007. [DOI: 10.1055/s-2007-983233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hilgendorff A, Schaible T, Gortner L, Bähner T, Ebsen M, Ruppert C, Reiss I. Surfactant Replacement or Open Lung Concept? Comparison of two treatment strategies in neonatal ARDS. Z Geburtshilfe Neonatol 2007. [DOI: 10.1055/s-2007-983038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Staffler A, Hilgendorff A, Flemmer AW, Loeff M, Strauss A, Schulze A. Intrauterine Therapie oder akute Entbindung und extrauterine Therapie bei fetaler Tachykardie mit myokardialer Kontraktilitätsstörung und globaler Herzinsuffizienz. Z Geburtshilfe Neonatol 2007. [DOI: 10.1055/s-2007-983273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hilgendorff A, Heidinger K, Bohnert A, König IR, Ziegler A, Gortner L, Chakraborty T, Bein G. Association of polymorphisms in the human surfactant protein-D (SFTPD) gene and pulmonary morbidity in the preterm infant. Z Geburtshilfe Neonatol 2006. [DOI: 10.1055/s-2006-946210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Hilgendorff A, Heidinger K, Bohnert A, König IR, Ziegler A, Gortner L, Chakraborty T, Bein G. Association of polymorphisms in the human surfactant protein-D (SFTPD) gene and pulmonary morbidity in the preterm infant. Z Geburtshilfe Neonatol 2006. [DOI: 10.1055/s-2006-943295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Hilgendorff A, Rudloff S, Tchatalbachev S, Chakraborty T, Hossain H, Gortner L. Pulmonale Genexpression in einem Mausmodell intrauteriner Wachstumsretardierung. Z Geburtshilfe Neonatol 2005. [DOI: 10.1055/s-2005-871385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Hilgendorff A, Enders G, Kreckel H, Kreuder J, Reiss I. Ganciclovirtherapie einer spätmanifestierten Hörstörung bei konnataler CMV Infektion. Z Geburtshilfe Neonatol 2005. [DOI: 10.1055/s-2005-871492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Lindner U, Hilgendorff A, Frey G, Gortner L. Arzneimitteltherapie bei sehr unreifen Frühgeborenen: Was hat sich in der vergangenen Dekade verändert? Z Geburtshilfe Neonatol 2005. [DOI: 10.1055/s-2005-871439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Gortner L, Hilgendorff A, Bähner T, Ebsen M, Reiss I, Rudloff S. Hypoxia-induced intrauterine growth retardation: effects on pulmonary development and surfactant protein transcription. Neonatology 2005; 88:129-35. [PMID: 15908743 DOI: 10.1159/000085895] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [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] [Received: 09/20/2004] [Accepted: 01/17/2005] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND OBJECTIVES Preterm infants with intrauterine growth retardation (IUGR) reveal an increased risk for the development of acute and chronic pulmonary disorders, i.e. bronchopulmonary dysplasia (BPD). In order to investigate the effect of IUGR on pulmonary development, an easily reproducible animal model for fetal growth restriction has been established using hypoxia as a sole intervention in the last third of pregnancy. METHODS Date-mated mice were randomly assigned to either being kept at a fraction of inspired oxygen (FiO2) of 0.10 (hypoxic group) starting at day 14 or under normoxic conditions until day 17.5 of gestation (control group). Variables of somatic growth were assessed and standardized histomorphometric analyses of pulmonary tissue were performed. Expression of surfactant proteins (SP)-A, -B, -C and -D was determined by quantitative rt-PCR as biochemical indicators for lung development and maturation. RESULTS Fetuses were delivered preterm at 0.87 of gestation. Those grown under hypoxic conditions revealed significantly lower birth weights (median: 0.69 vs. 0.97 g in controls; p < 0.001), body lengths (median: 17.5 vs. 20.2 mm in controls; p < 0.001) and fronto-occipital diameters (median: 9.4 vs. 10.1 mm in controls; p < 0.001) compared to controls. Histomorphometric analyses were found to be without significant differences between both groups. On the transcriptional level, however, mRNA expression of SP-A, -B and -C but not SP-D could be shown to be significantly reduced in hypoxic fetuses compared to normoxic controls. CONCLUSIONS In conclusion, hypoxic conditions from day 14 to 17.5 led to IUGR in preterm mice and to significant alterations of the developing surfactant system. We speculate restricted development of SP gene expression to be a causal factor for the increased risk of acute and chronic pulmonary disorders in preterm infants with IUGR.
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Affiliation(s)
- L Gortner
- Department of Pediatrics and Neonatology, University of Saarland, Homburg/Saar, Germany.
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Hilgendorff A, Rudloff S, Tchatalbachev S, Chakraborty T, Hossain H, Gortner L. Pulmonale Genexpression in einem Mausmodell intrauteriner Wachstumsretardierung (IUGR). Z Geburtshilfe Neonatol 2005. [DOI: 10.1055/s-2005-923212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hilgendorff A, Reiss I, Kreuder J, Lindemann H. Bronchospasmolyse-Effekt bei Säuglingen mit bronchopulmonaler Dysplasie. Z Geburtshilfe Neonatol 2005. [DOI: 10.1055/s-2005-923127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
Treatment of neonatal RDS in premature infants with intratracheal administration of natural surfactant has become gold standard therapy. Natural surfactant preparations mainly contain, apart from phospholipids, the surfactant associated proteins B and C (SP-B and SP-C). Both proteins are synthesized mainly in alveolar type-II cells and Clara-cells, SP-B, also in the gastrointestinal tract and the auditive tube. SP-B is encoded on chromosome 2 over a region with 11 exons, whereas the SP-C gene is localized on chromosome 8 in a region containing 6 exons. Transcription of both SP-B and SP-C is induced by TTF-1. Furthermore SP-1 and SP-3 are known as transcription factors for SP-B. The main function of SP-B and SP-C is to maintain physiologic surface properties enabeling adequate lung mechanics. A complete SP-B deficiency following homozygous mutations in the SP-B gene (e. g. 121-ins 2-mutation) therefore leads to severe respiratory failure postnatally, due to the lack of functional surfactant. On the other hand complete deficiency of SP-C causes chronic interstitial pneumonitis as well in infants as in adults depending on disease-modifiers yet unknown. Besides the surface tension lowering property, SP-B reveals immunological functions regarding its interaction with different proinflammatory cellular systems as well as other inflammatory mediators, e. g. following hyperoxia. For SP-C first studies have described modulation of inflammatory reactions in macrophages, suggesting similar immune-modulatory effects. Whereas basic effects on lung mechanisms of both lipophilic surfactant proteins seem to be well understood, their immunologic local pulmonary functions and effects on surfactant metabolism require further investigations.
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MESH Headings
- Adult
- Animals
- Chromosomes, Human, Pair 2
- Chromosomes, Human, Pair 8
- DNA Mutational Analysis
- Humans
- Infant
- Infant, Newborn
- Lung Diseases, Interstitial/drug therapy
- Lung Diseases, Interstitial/genetics
- Lung Diseases, Interstitial/physiopathology
- Peptides/genetics
- Peptides/physiology
- Peptides/therapeutic use
- Pulmonary Surfactant-Associated Protein B/genetics
- Pulmonary Surfactant-Associated Protein B/physiology
- Pulmonary Surfactant-Associated Protein B/therapeutic use
- Pulmonary Surfactant-Associated Protein C
- Respiratory Distress Syndrome, Newborn/drug therapy
- Respiratory Distress Syndrome, Newborn/genetics
- Respiratory Distress Syndrome, Newborn/physiopathology
- Respiratory Insufficiency/drug therapy
- Respiratory Insufficiency/genetics
- Respiratory Insufficiency/physiopathology
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Affiliation(s)
- L Gortner
- Abteilung für Neonatologie und Pädiatrische Intensivmedizin, Zentrum für Kinderheilkunde und Jugendmedizin der Justus-Liebig-Universität Giessen, Giessen.
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Hilgendorff A, Rawer D, Dörner M, Trotter A, Leick J, Hanfstingl T, Gortner L, Reiss I. Vascular endothelial growth factor A (VEGF-A) in Modell des experimentellen Mekoniumaspirationssyndroms nach Behandlung mit natürlichen und synthetischen Surfactantpräparaten. Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2004-829292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hilgendorff A, Huels G, Gortner L, Lindemann H. Lungenfunktionsdiagnostik bei Säuglingen mit bronchopulmonaler Dysplasie. Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2004-829314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Rawer D, Hilgendorff A, Dörner M, Trotter A, Leick J, Hanfstingl T, Reiss I, Gortner L. Genexpressionsanalyse an Tiermodellen des akuten neonatalen Lungenversagens: Evaluation dreier potentieller Housekeeping-Gene für die Real-Time PCR. Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2004-829306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hanfstingl T, Rawer D, Hilgendorff A, Leick J, Ruppert C, Reiss I, Gortner L. Beeinflussung der Expression surfactant-assoziierter Proteine durch rekombinantes SP-C Surfactant in einem Tiermodell für RDS. Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2004-829325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Bähner TM, Rudloff S, Hilgendorff A, Seliger AS, Reiss I, Gortner L. Maternale Hypoxie induziert Intrauterine Growth Retardation (IUGR): Konzeption eines Maus – Modells. Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2004-829346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Trotter A, Pohlandt F, Meggle S, Stuplich J, Küppers E, Beyer C, Kiossis E, Gortner L, Hilgendorff A. Aufhebung der geschlechtsspezifischen Expression von Surfactantprotein mRNA beim Schweinefeten durch Blockierung von Östradiol und Progesteron. Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2004-829334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Merz C, Hilgendorff A, Frey G, Bohnert A, Bein G, Gortner L. Bestimmung von Surfactant-Protein-D und MBL bei Frühgeborenen. Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2004-829358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Leick J, Hilgendorff A, Rawer D, Hanfstingl T, Dörner M, Trotter A, Gortner L, Ruppert C, Reiss I. Surfactantmetabolismus im Model des experimentellen Mekoniumaspirationssyndroms nach Behandlung mit synthetischen und natürlichen Surfactantpräparaten. Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2004-829315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hilgendorff A, Hossain H, Tchatalbachev S, Ghai R, Chakraborty T, Gortner L. Genexpressionsprofile bei Frühgeborenen mit konnataler Sepsis. Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2004-829368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hilgendorff A, Hogen N, H�ls G, Alzen G, Lindemann H, Gortner L. Sekund�re Osteoporose als typische Langzeitkomplikation der zystischen Fibrose und ihre Therapie mit Bisphosphonaten. Monatsschr Kinderheilkd 2004. [DOI: 10.1007/s00112-002-0636-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Hilgendorff A, Reiss I, Thul J, Alzen G, Gortner L. [Wilson-Mikity syndrome as a cause of respiratory insufficiency of prematurity]. Klin Padiatr 2003; 212:318-9. [PMID: 14582512 DOI: 10.1055/s-2000-9608] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The Wilson-Mikity syndrome is a differential diagnosis of chronic lung disease in the neonate and primarily related to immaturity. It is characterized by the absence of typical clinical and radiological findings of the respiratory distress syndrome (RDS). Infectious causes are being discussed.
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Affiliation(s)
- A Hilgendorff
- Zentrum für Kinderheilkunde und jugendmedizin, Abt. Allgemeine Pädiatrie und Neonatologie, Justus-Lieb-Universität, Giessen
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Hilgendorff A, Muth H, Parviz B, Staubitz A, Haberbosch W, Tillmanns H, Hölschermann H. Statins differ in their ability to block NF-kB activation in human blood monocytes. Int J Clin Pharmacol Ther 2003; 41:397-401. [PMID: 14518599 DOI: 10.5414/cpp41397] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.8] [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: 11/18/2022] Open
Abstract
OBJECTIVE The benefits of statin therapy in cardiovascular medicine are ascribed to its lipid-lowering effect as well as its anti-inflammatory properties. Whereas all statins have been shown to reduce cholesterol plasma levels, their effect on inflammatory markers has been inconsistent. Here, we show that statins differ markedly in their effectiveness in preventing activation of NF-kappaB, a transcription factor involved in the activation of immediately early genes during inflammation. METHODS Six statins (atorvastatin (Atv), cerivastatin (Cer), fluvastatin (Flu), lovastatin (Lov), pravastatin (Pra), simvastatin (Sim)) were tested for their ability to influence the induction of NF-kappaB in human monocytes (Mo) during inflammation. Mo isolated from healthy blood donors were incubated with LPS (10 microg/ml) in the presence and absence of statin (0.001-5 microM). NF-kappaB binding activity (EMSA), degradation and phosphorylation of the inhibitor protein IkappaB-alpha (Western blotting), tissue factor (TF) mRNA (rtPCR), and TF activity (clotting assay) were analyzed. RESULTS All statins inhibited LPS-induced NF-kappaB binding activity in Mo in a dose-dependent manner. The inhibitory effect was due to reduced phosphorylation and degradation of the NF-kappaB inhibitor protein IkappaB, and was primarily dependent on the absence of mevalonate. Whilst this effect appeared with all statins, there were marked differences in the degree of inhibition between the statins. Cer (45 +/- 9% inhibition, p < 0.05) was 9-fold more effective in reducing NF-kappaB activation than Flu (5 +/- 10% inhibition). The differences in the potency of statins (Cer > Atv > Sim > Pra > Lov > Flu) were also reflected at the transcriptional level and the protein level of NF-kappaB controlled tissue factor expression. CONCLUSIONS The finding that statins differ in their potency in interfering with the activation of NF-kappaB signaling in human monocytes further supports the hypothesis that some statins inhibit the inflammatory response more than others.
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Affiliation(s)
- A Hilgendorff
- Department of Internal Medicine, Justus Liebig University, Giessen, Germany
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Hölschermann H, Hilgendorff A, Kemkes-Matthes B, Schönburg M, Bauer EP, Tillmanns H, Haberbosch W. Simvastatin attenuates vascular hypercoagulability in cardiac transplant recipients. Transplantation 2000; 69:1830-6. [PMID: 10830219 DOI: 10.1097/00007890-200005150-00017] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND 3-Hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitors have been shown to reduce cardiac allograft failure and to lower the incidence of transplant coronary artery disease. These effects result from as yet unknown mechanisms not clearly attributable to lipid lowering. We here report that low-dose simvastatin treatment inhibits excessive expression of monocyte tissue factor (TF) and reduces the persistent hypercoagulability state seen in cardiac transplant recipients. METHODS Fifteen consecutive heart transplant recipients receiving standard oral immunosuppression were newly assigned to a 10 mg daily simvastatin therapy. Levels of TF activity in both unstimulated and lipopolysaccharide-stimulated peripheral blood mononuclear cells drawn from transplant recipients before and under simvastatin therapy were evaluated by one-stage clotting assay. RESULTS Monocyte TF activity was found to be significantly increased in cardiac transplant recipients when compared with healthy controls. Excessive monocyte procoagulant activity was reduced in cardiac transplant recipients during simvastatin treatment. This effect occurred independently of the reduction of serum low-density lipoprotein cholesterol. As demonstrated by reverse transcriptase-polymerase chain reaction, monocyte TF reduction by simvastatin, observed in 13 of the 15 transplant recipients investigated, could be ascribed to an inhibition of monocyte TF gene transcription. The reduction of monocyte TF activity during treatment with simvastatin paralleled with the normalization of elevated levels of thrombin-antithrombin complex, prothrombin fragment F1+2, and D-dimer, which are markers of thrombin and fibrin formation indicating coagulation activation after cardiac transplantation. CONCLUSION Inhibition of monocyte TF expression and attenuation of the persistent hypercoagulable state observed in cardiac transplant recipients during treatment with simvastatin may represent an important mechanism by which HMG-CoA reductase inhibitors protect against the development of transplant coronary artery disease.
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Affiliation(s)
- H Hölschermann
- Department of Internal Medicine, Justus-Liebig-University Giessen, Germany.
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