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• ROBINSON

YGODFRE

MIU

APrimer forClinicians andScientists

MarfanSyndrome:

MEDICAL INTELLIGENCE UNIT

Peter N. Robinson and Maurice Godfrey

Marfan Syndrome: A Primer for Clinicians and Scientists

MEDICAL

INTELLIGENCE

UNIT

Marfan Syndrome:

A Primer for Clinicians and Scientists

Peter N. Robinson, M.D.

Institute of Medical Genetics

Charité University Hospital

Humboldt University

Berlin, Germany

Maurice Godfrey, Ph.D.

Department of Pediatrics and Center

for Human Molecular Genetics

Munroe-Meyer Institute

University of Nebraska Medical Center

Omaha, Nebraska, U.S.A.

LANDES BIOSCIENCE / EUREKAH.COM

KLUWER ACADEMIC / PLENUM PUBLISHERS

GEORGETOWN, TEXAS

NEW YORK, NEW YORK

U.S.A.

U.S.A.

MARFAN SYNDROME:

A PRIMER FOR CLINICIANS AND SCIENTISTS

Medical Intelligence Unit

Landes Bioscience / Eurekah.com

Kluwer Academic / Plenum Publishers

Copyright ©2004 Eurekah.com and Kluwer Academic / Plenum Publishers

All rights reserved.

No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher.

Printed in the U.S.A.

Kluwer Academic / Plenum Publishers, 233 Spring Street, New York, New York, U.S.A. 10013 http://www.wkap.nl/

Please address all inquiries to the Publishers:

Landes Bioscience / Eurekah.com, 810 South Church Street, Georgetown, Texas, U.S.A. 78626 Phone: 512.863.7762; Fax: 512.863.0081

http://www.eurekah.com

http://www.landesbioscience.com ISBN: 0-306-48238-X

Marfan Syndrome: A Primer for Clinicians and Scientists, edited by Peter N. Robinson and Maurice Godfrey, Landes / Kluwer dual imprint / Landes series: Medical Intelligence Unit

While the authors, editors and publisher believe that drug selection and dosage and the specifications and usage of equipment and devices, as set forth in this book, are in accord with current recommendations and practice at the time of publication, they make no warranty, expressed or implied, with respect to material described in this book. In view of the ongoing research, equipment development, changes in governmental regulations and the rapid accumulation of information relating to the biomedical sciences, the reader is urged to carefully review and evaluate the information provided herein.

Library of Congress Cataloging-in-Publication Data

Marfan syndrome : a primer for clinicians and scientists / [edited by] Peter N. Robinson, Maurice Godfrey.

p. ; cm. -- (Medical intelligence unit) Includes bibliographic references and index. ISBN 0-306-48238-X

1. Marfan syndrome. I. Robinson, Peter N. (Peter Nicholas), 1963II. Godfrey, Maurice. III. Series: Medical intelligence unit (Unnumbered : 2003)

[DNLM: 1. Marfan Syndrome. WD 375 M326 2004] RC580.M37M37 2004

616.7'73--dc22

2004015623

CONTENTS

Preface ..................................................................................................

xi

Introduction: Historical Introduction

 

The Marfan Syndrome: From Clinical Delineation

 

to Mutational Characterization, a Semiautobiographic Account ............

1

Victor A. McKusick

 

Tutelage in the Principle of Pleiotropism ...............................................

3

Clinical Delineation of Marfan Syndrome

 

and Three Main Principles of Clinical Genetics .................................

4

The Evolution of Clinical Management of the Marfan Syndrome .........

6

The Basic Defect ...................................................................................

7

Marfan Support Groups ........................................................................

8

Public Awareness of Marfan Syndrome .................................................

9

Epilogue ..............................................................................................

10

1. Diagnosis and Treatment of Marfan Syndrome—A Summary .............

13

Anne H. Child, Luitgard Neumann and Peter N. Robinson

 

Overview .............................................................................................

13

Clinical Management ..........................................................................

16

Inheritance ..........................................................................................

17

The Differential Diagnosis of Marfan Syndrome .................................

19

2. Orthopaedic Problems in Marfan Syndrome ........................................

24

Paul Sponseller and Michael Shindle

 

Overview .............................................................................................

24

Diagnosis ............................................................................................

24

Spinal Abnormalities ...........................................................................

25

Hip Deformity ....................................................................................

30

Joint Manifestations ............................................................................

31

Growth and Maturation ......................................................................

31

Bone Density .......................................................................................

31

Screening and Athletics .......................................................................

32

3. Ophthalmological Aspects ....................................................................

35

Thomas Rosenberg

 

The Role of the Ophthalmologist ........................................................

35

Key Symptoms ....................................................................................

35

Ocular Pathophysiology ......................................................................

35

Clinical Signs ......................................................................................

37

Retina ..................................................................................................

38

Ophthalmological Differential Diagnosis ............................................

39

Complications .....................................................................................

40

Management .......................................................................................

41

Surgery ................................................................................................

42

4. Cardiovascular Aspects of the Marfan Syndrome:

 

A Systematic Review ............................................................................

45

Yskert von Kodolitsch and Maike Rybczynski

 

Methods ..............................................................................................

45

Prognosis and Causes of Death in Untreated MFS ..............................

46

Prevalence of Cardiovascular Manifestations .......................................

47

Pathogenesis of Cardiovascular Disease ...............................................

50

Concomitant Cardiovascular Disease ...................................................

52

Cardiovascular Complications .............................................................

53

Pregnancy ............................................................................................

58

Diagnosis of Cardiovascular Abnormalities ..........................................

59

General Measures of Management .......................................................

60

Medical Management ..........................................................................

60

Indications for Surgery ........................................................................

61

Surgically Treated MFS Patients ..........................................................

62

Strategies for Follow-Up ......................................................................

63

5. Cardiovascular Surgery: Surgical Management

 

of the Marfan Patient at the Johns Hopkins Hospital ..........................

70

Duke E. Cameron and Vincent L. Gott

 

Indications for Cardiovascular Surgery ................................................

71

Surgical Procedures .............................................................................

73

Long Term Results of Surgery .............................................................

76

Long Term Management Following Aortic Root Replacement ............

80

6.Surgery for Cardiovascular Disorders in Marfan Syndrome: The Atrioventricular Valves, Distal Aortic Segments

and Myocardium ..................................................................................

81

Roland Hetzer, Reinhard Pregla and Frank Barthel

 

Atrioventricular Valves in Marfan Patients ..........................................

82

Indications for Atrioventricular Valve Surgery .....................................

83

Techniques of Surgery .........................................................................

84

Surgery of the Distal Aortic Segments .................................................

85

Distal (Type B) Dissections and Aneurysm Formation

 

in the Distal Aorta Following Ascending Replacement

 

in Type A Dissection .......................................................................

89

Cardiomyopathy in Marfan Patients ....................................................

90

Cardiovascular Disease in Children with Marfan Syndrome ................

90

Noncardiac Marfan Anomalies Affecting

 

Cardiac Surgery Operations .............................................................

91

7. Mutation Analysis of the FBN1 Gene in Individuals

 

with Marfan Syndrome: Sensitivity, Methods,

 

Clinical Indications ..............................................................................

93

Anne De Paepe, Bart Loeys and Paul Coucke

 

Diagnosis of the Marfan Syndrome:

 

Interpretation and Limitations of the Ghent Nosology ....................

93

Methodology for Mutational Analysis of the FBN1 Gene ....................

95

Clinical Indications for Mutation Analysis of the FBN1 Gene .............

97

8. The Marfan Mutation Database .........................................................

101

Gwenaëlle Collod-Béroud and Catherine Boileau

 

Database ............................................................................................

101

Routines ............................................................................................

102

Mutation Analyses .............................................................................

103

FBN1 Polymorphism Database .........................................................

110

9. Familial Thoracic Aortic Aneurysms and Dissections .........................

113

Sumera N. Hasham and Dianna M. Milewicz

 

Aortic Aneurysms and Dissections .....................................................

113

Thoracic Aortic Aneurysms and Dissection Associated

 

with Genetic Syndromes ...............................................................

114

Familial Thoracic Ascending Aortic Aneurysms and Dissections .......

115

10. Fibrillin-2 Mutations in Congenital Contractural Arachnodactyly .....

123

Maurice Godfrey

 

Introduction and Clinical Phenotype ................................................

123

Diagnosis and Genetic Counseling ....................................................

123

Management .....................................................................................

123

Severe/Lethal CCA ............................................................................

124

Molecular Genetics of CCA ..............................................................

126

Fibrillin-2 in Development and Animal Models ................................

127

11. Assembly of Microfibrils ....................................................................

130

Kerstin Tiedemann, Boris Bätge and Dieter P. Reinhardt

 

Methodological Approaches to Study Microfibril Assembly ...............

130

Microfibril Assembly Is Often Disturbed

 

in Individuals with MFS ................................................................

131

Role of Propeptide Processing in Fibrillin Assembly ..........................

133

Role of Intermolecular Cross-Link Formation

 

in Fibrillin Assembly .....................................................................

134

Interaction Epitopes Important for Fibrillin Assembly .......................

136

Mouse Models and Fibrillin Assembly ...............................................

138

Future Directions ..............................................................................

139

12. Organization and Biomechanical Properties

 

of Fibrillin Microfibrils ......................................................................

143

Cay M. Kielty, Tim J. Wess, J. Louise Haston, Michael J. Sherratt,

 

Clair Baldock and C. Adrian Shuttleworth

 

Tissue Organisation of Fibrillin-Rich Microfibrils .............................

144

Organisation of Isolated Microfibrils .................................................

148

Mechanical Properties of Microfibrils ................................................

150

13. Microfibril-Associated Glycoprotein-1 (MAGP-1)

 

and Other Non-Fibrillin Macromolecules Which May Possess

 

a Functional Association with the 10 nm Microfibrils ........................

161

Mark A. Gibson

 

MAGPs .............................................................................................

162

Function of MAGPs ..........................................................................

165

Other Small Microfibril-Associated Proteins (MFAPs) ......................

167

Proteoglycans ....................................................................................

169

Fibulins .............................................................................................

170

LTBPs ...............................................................................................

171

Emilins ..............................................................................................

172

Other Proteins ...................................................................................

172

Involvement in Human Genetic Diseases ..........................................

172

14. The Fibrillins and Key Molecular Mechanisms

 

that Initiate Disease Pathways ............................................................

178

Lynn Y. Sakai

 

Molecular Structure of Fibrillin: How FBN Mutations

 

Initiate Disease ..............................................................................

179

Fibrillin Microfibrils: Mutations Result in Poorly Assembled

 

Microfibrils and/or Microfibril Instability .....................................

181

Microfibrils and Morphogenesis: Effects of Fibrillin Mutations

 

on Growth Factors ........................................................................

183

New Research Opportunities Relevant to the Marfan Syndrome .......

185

15. Insights into Fibrillin-1 Structure and Function

 

from Domain Studies .........................................................................

188

Pat Whiteman and Penny A. Handford

 

Structure of Fibrillin-1 Domains .......................................................

188

Calcium Binding Properties of Fibrillin-1 .........................................

191

Structural Consequences of FBN1 Mutations ....................................

192

Correlation of Structural Studies with the Cellular Effects

 

of Missense Mutations ...................................................................

195

16. Genetics of Marfan Syndrome in Mouse Models ................................

199

Emilio Arteaga-Solis, Harry Dietz and Francesco Ramirez

 

Elastic Fiber Composition and Assembly ...........................................

199

Mouse Models of MFS ......................................................................

200

Instructive Roles of Microfibrils ........................................................

203

Perspectives .......................................................................................

205

Appendix: Marfan Syndrome Patient Organizations ..........................

209

Index ..................................................................................................

215