cover

Contents

Cover

Title Page

Copyright

Dedication

Contributors

Preface

Foreword

Acknowledgements

Chapter 1: Population Health

Introduction

Shoe-Leather Epidemiology

Smoking and Cancer: Association and Causality

The Inverse Care Law

Framingham and the Heart

The Evidence-Based Revolution

The Black Report

The Prevention Paradox

The Principles of Screening

Determining Causation

On the State of Public Health

Conclusion

Key Outstanding Questions

Key Research Centres

References

Chapter 2: Patient Safety

Introduction

Florence Nightingale on Running a Hospital

Codman and the End Results System

Understanding the Prevalence of Medical Error

Models for Understanding Error

The Story of Wayne Jowett

Setting the Agenda and Building Learning Organisations

Technology and Patient Safety

Hand Hygiene

Standardising Care

Using Checklists

Conclusions

Key Outstanding Questions

Key Research Centres

References

Chapter 3: Heart Failure

Introduction

The Landmark Trial of Renin-Angiotensin Inhibition

The Multidisciplinary Heart Failure Team

An About-Turn in Medical Thinking: Beta-Blockers Are Good for Heart Failure

B-Type Natriuretic Peptide in Helping to Identify Heart Failure

The Digoxin Trial in Heart Failure Study

The Randomized Aldactone Evaluation (RALES) Study

Flogging a Dying Horse: The Sad Tale of Intravenous Inotropes

A Paradigm Shift: The Development of Cardiac Resynchronisation Therapy: CARE HF

Preventing Sudden Death by an Implantable Cardioverter Defibrillator

Telemonitoring: An Important Technological Advance in Monitoring Heart Failure

Key Outstanding Questions

Key Laboratories and Clinics

References

Additional References

Chapter 4: Acute Coronary Syndrome (NSTEMI)

Introduction

Troponin: The Basis of Diagnosis

Aspirin: The Cornerstone of MI Management

The Additive Effect of Clopidogrel: A Case for Dual Anti-Platelet Therapy

The New Kid on the Block: Fondaparinux

Percutaneous Coronary Intervention: Who Should Get It?

The Role of GPIIb/IIIa Inhibitors

Use of ACE Inhibitors Post Myocardial Infarction: Dawn of a New HOPE

Beta-Blockers: When to Give Them?

Should All Post-MI Patients Get Statins?

Aldosterone Antagonists

Conclusion

Key Outstanding Questions

Key Research Centres

References

Chapter 5: Lipids, Dyslipidaemia and Cardiovascular Disease

Introduction

The Beginnings of Clinical Lipidology: Fredrickson's Classification of Lipoprotein Phenotypes

Dietary Saturated Fat and Cardiovascular Disease: The Seven Countries Study

Risk Factors for Coronary Heart Disease: The Framingham Study

Discovery of the LDL Receptor and the Cause of Familial Hypercholesterolaemia

Recognition of the Protective Role of HDL against Cardiovascular Disease

The Discovery of Compactin: The First Statin

ApoE Polymorphism and Type III Hyperlipoproteinaemia

Role of the Scavenger Receptor in Atherosclerosis

Atheromatous Plaque Fissuring and Fatal Coronary Events

4S: The Trial That Proved the Lipid Hypothesis

Summary and Conclusions

Key Outstanding Questions

Key Research Centres

References

Chapter 6: Atrial Fibrillation

Introduction

Basic Mechanisms: The Multiple-Wavelet Hypothesis

Basic Mechanisms: Wavelength

Basic Mechanisms: Pulmonary Veins

Basic Mechanisms: Mother Rotor

Atrial Remodelling: Atrial Tachycardia-Induced Remodelling

Atrial Remodelling: Congestive Heart Failure-Related Atrial Remodelling

Drug Therapy: Anticoagulation Therapy

Drug Therapy: Rhythm Control versus Rate Control

Drug Therapy: Upstream Therapy

Genetics

Conclusions

References

Chapter 7: Asthma

Introduction

The Pathophysiology of Asthma

Treatment of Asthma

Summary and Conclusions

Key Outstanding Questions

Key Research Centres

References

Chapter 8: Cystic Fibrosis

Introduction

An Electrifying Finding: Abnormal Mucosal Potential Differences

On the Shoulders of Giants: Chloride Permeability and CF

Big Is Beautiful, and More Is Better

A False Dawn? Finding the CF Gene

Treatment of Respiratory Infection: The Early Bird Catches the Worm

Many a Slip! The First Animal Model of CF

No Such Thing as a Free Lunch: New Infections, New Problems

Catch Them Early, Treat Them Quickly: A Randomised Controlled Trial of Screening for CF

Pathophysiology of CF: The Low-Volume Hypothesis

A True Dawn? The Modern Era of Mutation Specific Therapies

Summary and Conclusions

Key Outstanding Questions

Key Useful Websites

References

Chapter 9: Chronic Obstructive Pulmonary Disease

Introduction

The Dutch Hypothesis

Quantifying Lung Resistance in Small Airways Disease

Assessing Decline in FEV1

Exercise Training in COPD

Supplementary O2 Therapy in COPD

Synchronised Smoking Cessation: Effect on Decline in FEV1

Breathlessness and Dynamic Hyperinflation

Effect of an Inhaled Steroid on FEV1 Decline in Smokers with Mild COPD

The Nature of Persistent Airway Inflammation in Ex-Smokers with COPD

Small Airways Inflammation in COPD

Exacerbations in COPD

Summary and Conclusions

Key Outstanding Questions

Key Research Centres

References

Chapter 10: Pneumonia

Introduction

Prevention of Pneumonia – Vaccination against Streptococcus pneumoniae

Recognising the Patient with Pneumonia

Determining Where to Treat the Patient Diagnosed with Pneumonia

Surviving Sepsis: Reducing the Mortality of Patients with Severe Pneumonia

Optimal Duration of Antibiotic Therapy

Sequelae of Pneumonia: Pleural Space Infection

Microbiology of Pneumonia

Novel Approaches to Diagnosing an Aetiological Cause of Pneumonia

Clustering of Pneumocystis jirovecii The First Presentation of the Acquired Immunodeficiency Syndrome (AIDS)

Legionnaires' Disease: an Epidemiological and Laboratory Mystery

Summary and Conclusions

Key Outstanding Questions

References

Chapter 11: Stroke

Introduction

Classifying Stroke by Aetiological Subtype

The Brain Must Be Imaged Immediately after Arrival at Hospital

Stroke Units Save Lives

The First Definitive Drug Treatment for Acute Ischaemic Stroke

Hemicraniectomy Saves Lives in Malignant Cerebral Infarction without Increasing the Numbers of Severely Disabled Survivors

Secondary Prevention Should Start Early after Ischaemic Stroke

Preventing Recurrent Stroke in Those with Atrial Fibrillation

Preventing Recurrent Stroke in Those with Severe Carotid Artery Stenosis

Lowering Blood Pressure to Reduce the Risk of Recurrence after Stroke

Lowering Blood Lipids to Reduce the Risk of Recurrence after Stroke

Key Outstanding Questions

Key Research Centres

References

Chapter 12: Parkinson's Disease

Introduction

Describing the Condition

Drug Treatments in Parkinson's Disease

Assessing Disease Severity

Developing Animal Models

Parkinson's Disease Surgery

Establishing the Diagnosis

Motor Complications

Redefining the Pathology

Understanding the Genetics

Summary

Key Outstanding Questions

Key Research Centres

References

Additional References

Chapter 13: Epilepsy

Introduction and Historical Perspective

The Birth of Anti-Epileptic Medication

When to Begin Anti-Epileptic Medication?

Which Anti-Epileptic Drugs to Start? The SANAD study

Early Identification of Refractory Epilepsy

Anti-Epileptic Drug Withdrawal

Genetics and Epilepsy

Impact of Epilepsy

Anti-Epileptic Drugs and the Foetus

Summary and Conclusions

Key Outstanding Questions

References

Additional References

Chapter 14: Motor Neuron Disease

Introduction

The Recognition of ALS as a Disease of Two Compartments

Identification of the Pathological Hallmarks of MND

The First Gene in Familial MND

An Animal Model

The First Disease-Modifying Treatment

Identification of Clinical Prognostic Factors

Standardised Measurement of Disease Progression and the Evolution of Clinical Trials

The Discovery of TDP-43

Understanding Focality and Spread of Pathology

Summary and Conclusion

Key Outstanding Questions

Key Research Centres

References

Additional References

Chapter 15: Migraine

Introduction

Migraine and Ergotamine

Introduction of the Serotonin Antagonists

Headache Classification

An Account of Auras

The Development of Triptans

The Trigeminovascular System and Migraine

Migraine Genetics

Key Outstanding Questions

Key Research Groups

References

Additional References

Chapter 16: Multiple Sclerosis

Introduction

1916: The Pathological Anatomy of the Lesion in Multiple Sclerosis

1960: Evidence for an Immune Response within the Central Nervous System

1970: An Exemplary Trial of Steroid Treatment of the Acute Relapse

1972: The First Clinical Demonstration of Demyelination

1972: Identifying the Primary Genetic Association for Multiple Sclerosis

1973: Remyelination Is Possible in the CNS

1977: Plotting the Epidemiology of MS

1981: The First Evidence Showing That MS Is Treatable: The End of the Beginning?

1983: A Step towards Increased Diagnostic Accuracy

1988: Surrogate Markers in Life for Disease Activity in MS

Conclusion

Key Outstanding Questions

Key Research Centres

References

Additional References

Chapter 17: The Autoimmune Basis for Guillain-Barré Syndrome

Introduction

What Is Guillain-Barré Syndrome?

Describing the Syndrome

Defining the Pathology

Assessing Treatment

Clinical Variants and Neuroimmunology

The Mechanism of Antiganglioside Antibody-mediated Nerve Injury

Summary and Conclusions

Key Outstanding Questions

Key Research Centres

References

Additional References

Chapter 18: Helicobacter pylori, Peptic Ulcers and Gastric Cancer

Introduction

An Infectious Theory

The Human Guinea Pig and Koch's Postulates

How Does an Infection in the Antrum Cause Ulcers in the Duodenum? The Gastrin Link

What Is the Effect of Helicobacter pylori on Gastric Physiology?

A Simple Treatment That Cures Ulcers?

The Power of the NIH Consensus Statements

The H. pylori Genome

H. pylori and Gastric Cancer

H. pylori and the Gastric Cancer versus Duodenal Ulcer Phenotype

The Role of Host Genetics in Outcome of H. pylori Infection

Summary and Conclusion

Key Outstanding Questions

Key Research Centres

References

Chapter 19: Acute Liver Failure

Introduction

Definitions of Acute Liver Failure

Prognostication in Acute Liver Failure

Pathophysiology of ALF: Multiple Organ Failure and Covert Tissue Hypoxia

N-Acetyl Cysteine in ALF: From Clinical Observation to Randomised Controlled Trials

Ammonia: The Key Player in Hepatic Encephalopathy and Cerebral Oedema

Conclusion

Key Outstanding Questions

Key Research Centres

References

Chapter 20: Haemostasis and Thrombosis

Introduction

The Discovery of Heparin

The Discovery of Warfarin

The Treatment of Pulmonary Embolism

Prevention of Venous Thrombosis

Warfarin and Heparin in the Initial Treatment of Thromboembolic Disease

Activated Protein C Resistance and the Discovery of the Factor V Leiden Mutation

The Introduction of Low Molecular Weight Heparin

Mechanical Methods of Preventing Pulmonary Emboli

Predicting Venous Thrombosis

Conclusion

Key Outstanding Questions

Key Research Centres

References

Chapter 21: The Inherited Disorders of Haemoglobin

Introduction

Molecular and Cellular Pathology

Improvements in the Prevention and Treatment of the Thalassaemias and Sickle Cell Disease

Why Are the Inherited Haemoglobin Disorders So Common?

Summary

Key Outstanding Questions

Acknowledgements

References

Additional References

Chapter 22: Diabetes Therapy and the Prevention of Vascular Damage

Introduction

Urinary Glucose Control and Microvascular Complications in Clinical Practice

Subcutaneous Pumped Insulin: Better Glucose Control in Type 1 Diabetes

A Feasibility Study of Glucose Control and Complications

The Ultimate Type 1 Diabetes Study

Persistent Effects of Glucose Control on Arteriosclerotic Outcomes

Type 2 Diabetes: A Study That Took 20 Years

The Glucose Legacy Effect Wins Again

The Power of Multifactorial Intervention in Type 2 Diabetes

Intensive Glucose Control or Over-Intensive Glucose Control?

Meta-Analysis to the Rescue

Concluding Comment

References

Additional References

Chapter 23: Rheumatoid Arthritis

Introduction

What Is the Tissue Pathology?

What Mediates the Systemic Process?

How Might Rheumatoid Factors Be Pathogenic?

What Is the Basis of Genetic Susceptibility to RA?

What Is the Crucial Inflammatory Mediator in RA?

Does Smoking Contribute to the Causation of RA?

Why Do RA Patients Have Antibodies to Keratin?

What New Insights Can Immunohistochemistry Provide?

When Does the Immunopathology Begin?

Is RA Due to Self-Perpetuating Autoreactive B Cells?

Conclusions and Key Outstanding Questions

References

Additional References

Chapter 24: Osteoarthritis

Introduction

Risk Factors for Osteoarthritis

Focus on Pain

Linking Radiological OA and Clinical Symptoms

Surgical Treatment of Osteoarthritis

Autologous Chondrocyte Implantation: The Future of OA Therapuetics?

Key Outstanding Questions

Key Research Centres

References

Additional References

Chapter 25: Systemic Vasculitis

Introduction

Describing the Disease

Classification of Vasculitis

Aetiology and Pathogenesis

Treatment

Summary

Key Outstanding Questions

Key Research Groups

References

Additional References

Chapter 26: Polycystic Kidney Disease

Introduction

Autosomal Dominant Polycystic Kidney Disease

Describing the Syndrome and Diagnosis of ADPKD

Identifying the Genes and Proteins: ADPKD1 Gene and Polycystin-1

Identifying the Genes and Proteins: ADPKD2 gene and Polycystin-2

Defining the Pathogenesis

Prospective Treatments

Autosomal Recessive Polycystic Kidney Disease

Identifying the Gene and Protein

Defining the Pathogenesis

Prospective Treatment

Summary and Conclusions

Note

Key Outstanding Questions

Key Research Centres

References

Additional References

Chapter 27: Glomerular Disease and the Nephrotic Syndrome

Introduction

The Beginnings of Clinical Nephrology: Bright's Disease

Classification of Bright's Disease

The Nephrotic Syndrome

Structure, Function and Pathology of the Glomerular Filtration Barrier

Summary and Conclusions

Key Outstanding Questions

Key Research Centres

References

Additional References

Chapter 28: Acquired Immunodeficiency Syndrome

Introduction

The Discovery of AIDS and HIV

The Origin and Evolution of HIV-1

Identification of Cellular Entry Receptors and Co-Receptors Required for HIV-1 Infection

The Course of HIV-1 Infection: From Transmission to the Development of AIDS

Host Immune Mechanisms Controlling HIV-1 Infection

Treatment of HIV-1 Infection by Antiretroviral Drugs

HIV-1 Vaccines: Preventative versus Therapeutic

Conclusion

Key Outstanding Questions

Key Research Centres

References

Additional References

Chapter 29: Transplantation

Introduction

Identification of Chromosomal Loci Encoding Major Histocompatibility Antigens in Mice and Humans

Tolerance to Transplanted Tissue Can Be Induced Post-natally (skin grafts are rejected by ‘cell mediated immunity’)

Clinical Transplantation of Kidneys Is Feasible

Clinical Transplantation of Bone Marrow Creates Chimerism

The Thymus Controls the Ability to Reject Grafts and Humoral Responses

Mutation Involving Thymus Affecting Ability to Reject Grafts

Regulation of Immunity by T Cells

T Cell Responses are MHC Restricted – a Central Tenet for All T Cell Responses

Repertoire Selection of T Cells in the Thymus Depends on Structural Components of the T Cell Receptor and Self MHC Molecules

Key Outstanding Questions

Key Research Centres

Acknowledgements

References

Additional References

Chapter 30: Autoimmunity

Introduction

Is ‘Horror Autotoxicus’ Possible?

Is Collagen Vascular Disease a Systemic Reaction to Dying Self?

Might Auto-antibodies Cause Organ-Specific Disease?

Can Instability of B Cell Tolerance Be Modeled in Animals?

Are B Cell Dynamics as Important as Reactivity?

How Can Autoreactive B Cells Get T Cell Help?

Does B Cell/T Cell Antigen Discordance Occur In Vivo?

What Roles Do Innate Thresholds Play?

Are There Genetic Effects on T Cell Tolerance?

What Does Therapeutic Depletion of B or T Cells Tell Us?

Conclusions

Key Outstanding Questions

References

Additional References

Chapter 31: The Biochemistry of Depression

Introduction

A Laboratory Test for Depression?

Hypersecretion of Cortisol as a State-Independent Marker of Depression

Noradrenaline Dysfunction in Depressed Patients

Role for Noradrenaline in Depressive Relapse

Serotonin and Depression: A Possible Link with Suicide

Low Serotonin Function in Depression Detected by Neuroendocrine Challenge

PET Imaging of the 5-HT1A Receptor in Depression

Tryptophan Depletion Provokes Relapse in Recovered Depressed Patients

An Interaction between a Serotonin Genetic Mechanism and Environmental Stress

Beyond Monoamines: A Role for GABA and Glutamate in Depression

Conclusion

Key Questions Remaining

References

Additional References

Chapter 32: Schizophrenia and the Dopamine Hypothesis

Introduction

What Is the Dopamine Hypothesis?

Amphetamine-Induced Psychosis

Experimental Studies of Amphetamine

Discovery of Antipsychotic Drugs

Dopamine and Parkinson's Disease

Dopamine Blockade and the Efficacy of Antipsychotic Drugs

Determination of the Different Classes of Dopamine Receptors

Atypical Antipsychotics

A Revised Dopamine Theory of Schizophrenia

Imaging Dopamine Receptors

Summary and Conclusions

Key Outstanding Questions

Key Research Centres

References

Chapter 33: Alzheimer's Disease

Introduction

Alzheimer's Original Description of the Disease

Loss of Subcortical Neurones from the Basal Nucleus of Meynert

The Relationship between the Pathology of Alzheimer's Disease and the Clinical Syndrome

Standardising Diagnostic Criteria for Research Studies

Revising the NINCDS–ADRDA Criteria

The Symptoms of Alzheimer's Disease

Cholinesterase Inhibitors as Treatment for AD

The Possible Central Role of ‘Amyloid’

Risk Factor Genes for Alzheimer's Disease: APOE 4

Time to Reconsider the Amyloid Cascade Hypothesis? Amyloid Removal from the Brain Does Not Benefit AD Sufferers

Key Outstanding Questions

Key Research Centres

References

Additional References

Index

Title Page

To my wife Rosalyn

Contributors

Raza Alikhan

Consultant Haematologist

Haemophilia and Thrombosis Centre

University Hospital of Wales

Cardiff, UK

Nigel Arden

Professor of Rheumatology

Botnar Research Centre

Institute of Musculoskeletal Sciences

University of Oxford

Oxford, UK

Peter J. Barnes

Professor and Head of Respiratory Medicine

Airway Disease Section

National Heart and Lung Institute

Imperial College London

London, UK

Philip M.W. Bath

Professor of Stroke MedicineStroke Association

Division of Stroke

School of Clinical Sciences

University of Nottingham

Nottingham, UK

Colin Berry

Professor and Honorary Consultant Physician and Cardiologist

BHF Glasgow Cardiovascular Research Centre

University of Glasgow

Glasgow, UK

Alistair Burns

Professor of Old Age Psychiatry

Department of Old Age Psychiatry

School of Medicine

University of Manchester

Manchester, UK

Andrew K. Burroughs

Consultant Physician and Professor of Hepatology

Royal Free Sheila Sherlock Liver Centre

Royal Free Hospital

London, UK

Andrew Bush

Professor of Paediatric Respirology

Imperial College London and Royal Brompton Hospital

London, UK

Geraldine Cambridge

Principal Research Fellow and Honorary Senior Lecturer in Rheumatology

Centre for Rheumatology

Division of Medicine

University College London

London, UK

Alasdair Coles

University Lecturer in Neuroimmunology

Department of Clinical Neurosciences

University of Cambridge

Cambridge, UK

Alastair Compston

Professor of Neurology

Department of Clinical Neurosciences

University of Cambridge

Cambridge, UK

Philip J. Cowen

Professor of Psychopharmacology

Department of Psychiatry

University of Oxford

Oxford, UK

Martin R. Cowie

Professor of Cardiology

National Heart and Lung Institute

Imperial College London

London, UK

Robert J.O. Davies

Professor of Respiratory Medicine

Respiratory Medicine Group

Experimental Medicine Division

University of Oxford

Oxford, UK

Sir Liam Donaldson

Chief Medical Officer for England and UK Government Chief Medical Adviser 1998–2010

Department of Health

London, UK

Anahita Dua

Department of General Surgery

Medical College of Wisconsin

Milwaukee, Wisconsin, USA

Jonathan C.W. Edwards

Professor in Connective Tissue Medicine

Centre for Rheumatology

Division of Medicine

University College London

London, UK

Emad M. El-Omar

Professor of Gastroenterology

Gastrointestinal Group

Institute of Medical Sciences School of Medicine & Dentistry Aberdeen University

Aberdeen, UK

Paul A. Ford

Senior Clinical Research Fellow

Airway Disease Section

National Heart and Lung Institute

Imperial College London

London, UK

John A. Goodfellow

Honorary Clinical Academic Fellow

Neuroimmunology Group

Division of Clinical Neuroscience

University of Glasgow

Glasgow, UK

Kaushik Guha

Clinical Research Fellow

National Heart and Lung Institute

Imperial College London

London, UK

Felix Greaves

Public Health Registrar and Clinical Research Fellow

Department of Primary Care and Public Health

Imperial College London

London, UK

Donald G. Grosset

Consultant Neurologist and Honorary Senior Lecturer in Neurology

Greater Glasgow Movement Disorder Clinic

Institute of Neurological Sciences

Southern General Hospital

Glasgow, UK

Philip Home

Chair of Diabetes Medicine

Institute of Cellular Medicine

University of Newcastle upon Tyne

Newcastle, UK

Eve C. Johnstone

Professor and Head of Division of Psychiatry

Centre for Clinical Brain Sciences

University Department of Psychiatry

University of Edinburgh

Edinburgh, UK

Mandy Johnstone

Clinical Lecturer in Psychiatry

Centre for Clinical Brain Sciences

University Department of Psychiatry

University of Edinburgh

Edinburgh, UK

Maria J. Leandro

Honorary Senior Lecturer

Centre for Rheumatology

Division of Medicine

University College London

London, UK

Tak H. Lee

Asthma UK Professor of Allergy and Respiratory Medicine

Division of Asthma, Allergy and Lung Biology

Kings College London

London, UK

Wei Yao Lim

Academic Foundation Trainee

BHF Glasgow Cardiovascular Research Centre

University of Glasgow

Glasgow, UK

Raashid Luqmani

Senior Lecturer in Rheumatology

Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences

University of Oxford

Oxford, UK

Eleanor K. Mishra

Research Fellow

Oxford Centre for Respiratory Medicine

University of Oxford

Oxford, UK

Stanley Nattel

Associate Professor

Department of Medicine

Montreal Heart Institute

Université de Montreal

Canada

Edward J. Newman

Clinical Lecturer in Neurology

Greater Glasgow Movement Disorder Clinic

Institute of Neurological Sciences

Southern General Hospital

Glasgow, UK

Alexander S. Nicholls

Botnar Research Centre

Institute of Musculoskeletal Sciences

University of Oxford

Oxford, UK

Kunihiro Nishida

Assistant Professor

The Second Department of Internal Medicine

University of Toyama

Toyama, Japan

Douglas Noble

Public Health Registrar and Honorary Clinical Lecturer

Centre for Health Sciences

Barts and the London School of Medicine and Dentistry

London, UK

James O'Beirne

Consultant Hepatologist

Royal Free Sheila Sherlock Liver Centre

Royal Free Hospital

London, UK

Jenny Papakrivopoulou

NIHR Clinical Lecturer in Nephrology

UCL Centre for Nephrology

Royal Free Hospital

London, UK

Charles Percy

Specialty Registrar in Haematology

Haemophilia and Thrombosis Centre

University Hospital of Wales

Cardiff, UK

Tica Pichulik

MRC Human Immunology Unit

Weatherall Institute of Molecular Medicine

University of Oxford

Oxford, UK

Qi Qian

Lecturer in Internal Medicine and Nephrology

Division of Nephrology and Hypertension

Department of Internal Medicine

Mayo Clinic

Rochester, Minnesota, USA

Joanna Robson

Rheumatology Registrar

Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences

University of Oxford

Oxford, UK

Fergus J. Rugg-Gunn

Consultant Neurologist

Department of Clinical and Experimental Epilepsy

National Hospital for Neurology and Neurosurgery

Queen Square

London, UK

Leonard Siew

Clinical Research Fellow

Department of Asthma, Allergy and Respiratory Science

Kings College London

London, UK

Alison Simmons

Senior Clinical Lecturer

MRC Human Immunology Unit

Weatherall Institute of Molecular Medicine

University of Oxford

Oxford, UK

Elizabeth Simpson

Emeritus Professor of Transplantation Biology

Division of Immunology and Inflammation

Imperial College London

London, UK

Anushka Soni

Botnar Research Centre

Institute of Musculoskeletal Sciences

University of Oxford

Oxford, UK

Nikola Sprigg

Clinical Associate Professor

Division of Stroke

School of Clinical Sciences

University of Nottingham

Nottingham, UK

Ravi Suppiah

Rheumatology Clinical Fellow

Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences

University of Oxford

Oxford, UK

Kevin Talbot

Professor of Motor Neuron Biology and Honorary Consultant Neurologist

Oxford Motor Neuron Disease Centre and Department of Clinical Neurology

University of Oxford

Oxford, UK

Gilbert R. Thompson

Emeritus Professor of Clinical Lipidology

Department of Medicine

Imperial College London

London, UK

Martin R. Turner

Lady Edith Wolfson Clinician Scientist and Honorary Consultant Neurologist

Oxford Motor Neuron Disease Centre and Department of Clinical Neurology

University of Oxford

Oxford, UK

Robert Unwin

Professor of Nephrology and Physiology

UCL Centre for Nephrology

Royal Free Hospital

London, UK

Sir David Weatherall

Regius Professor of Medicine Emeritus

Weatherall Institute of Molecular Medicine

University of Oxford

Oxford, UK

Chancellor

Keele University

Keele, UK

Mark W. Weatherall

Consultant Neurologist

Princess Margaret Migraine Clinic

Department of Clinical Neurology

Charing Cross Hospital

London, UK

Kirsten White

Botnar Research Centre

Institute of Musculoskeletal Sciences

University of Oxford

Oxford, UK

Gordon Wilcock

Professor of Clinical Geratology

Dementia Clinical Research Group

Experimental Medicine Division

University of Oxford

Oxford, UK

Hugh J. Willison

Professor of Neurology

Neuroimmunology Group

Division of Clinical Neuroscience

University of Glasgow

Glasgow, UK

John M. Wrightson

Clinical Research Fellow and Respiratory Specialist Registrar

Oxford Centre for Respiratory Medicine

University of Oxford

Oxford, UK

Preface

Ars longa, vita brevis, occasio praeceps, experimentum periculosum, iudicium difficile.

[The art (of medicine) is long, life is short, opportunity fleeting, experiment treacherous, judgment difficult.]

Hippocrates

Understanding Medical Research is aimed at giving medical students and junior doctors a concise and authoritative overview of the landmark papers in medical research. Rather than summarising only recent developments, as review articles do, in each chapter the authors discuss ten or so papers that have contributed most to our understanding of the topic. It is distinct from evidence-based medicine in that it doesn't aim to summarise the ‘best available’ trial data; rather, it summarises the unique blend of science and pragmatism that has come together to form medical practice.

Such an enterprise is obviously a huge challenge to the authors, and I have allowed them some flexibility in how they approach this. For most a chronological approach is taken, but for some, such as the chapters on stroke, population health and patient safety, a slightly different approach is used. Regardless, the effect is the same: an authoritative summary of the key papers from people at the cutting edge of research.

The range of studies included is broad: from famous randomised clinical trials down to obscure case studies and biochemical reports. Likewise the range of journals from which the articles are selected is equally broad, although one or two recur again and again. These are the papers and journals that have changed our understanding of medicine, and every doctor should be familiar with them.

The reader should use this book as a starting point from which to enter the world of research. The chapters will give you a `big-picture' overview of the topic. This will put you in an ideal place to then put into context current studies and clinical practice, and to formulate your own research questions.

John A. Goodfellow

Foreword

Modern medicine is a discipline that over the last 150 years has developed in response to changing patterns of human disease, scientific understanding and technology. As such its origins, paradigm shifts and breakthroughs have at times come from human ingenuity, scientific scrutiny and serendipity. Much contemporary focus is rightly on determining best clinical practice through rigorous and tightly controlled clinical trials. However, this is only one part of the story of medicine in any given field. Understanding Medical Research is a book that seeks to give the reader a succinct and lively account of the colourful research that has made clinical practice what it is today.

For example, the ‘shoe-leather epidemiology’ of the great physician John Snow looks rather primitive in its methodology to the modern doctor: walking the streets of London to gather data by knocking on doors! This would not earn him a high-impact publication in today's journals, yet his painstaking observations allowed him to go beyond the ‘miasma’ theory of cholera and propose a waterborne pathogen, before even the germ theory of disease itself was widely accepted! Not to mention the countless lives he directly saved.

Not many of us have seen a case of familial hypercholesterolaemia; fewer still have read Goldstein and Brown's technical article on lipid metabolism in fibroblasts from patients with this disorder in a 1974 issue of the Journal of Biological Chemistry. However, we prescribe millions of statins on a daily basis and their Nobel Prize winning work began with this diligent piece of work. Other Nobel Prize winners have begun with more of a flair: the Australian gastroenterology registrar who, determined to convince rightly sceptical colleagues of his new theory on gastric ulcers, uses himself in an ‘n of one’ trial by simply walking into his laboratory and swallowing a vial of H. pylori.

Of course, many of the most significant publications have been large, well-conducted trials. The Framingham study for example established a standard, perhaps never to be replicated, in conducting long-term observational studies on a large scale. So much of what we now believe about hypertension, ischaemic heart disease and much more comes directly from this mammoth enterprise. Or the trials in heart failure – CONSENSUS, RALES and many others – that now allow us to know with great confidence which drugs really work and save lives.

Understanding Medical Research is an attempt to put in one place these very different types of studies which have come together to shape modern medicine. I hope that in reading it you develop the same sense of enthusiasm and excitement about medicine with which the authors have written.

Sir Liam Donaldson

Acknowledgements

First and foremost I must thank each of the authors who have given their time, expertise and energy in making this textbook what it is. It isn't hard to get academics to talk about what they love, but nonetheless it is easy to underestimate the time needed to carefully and succinctly summarise a whole field of research, and to do so in the midst of busy academic and clinical commitments. Your efforts have been legion and will provide a generation of medical students and junior doctors with an introduction to the vast volumes of medical research.

My thanks to the whole team at Wiley-Blackwell in Oxford, particularly Elizabeth Johnston for giving the project a chance when it was just an idea in a medical student's head, and Karen Moore for her endless patience in putting the manuscript together.

Thanks to Sir Liam Donaldson for providing the Foreword.

A final thanks to a few fellow medics who encouraged me along the way: Jakub Scaber, Charles Williams and Wei Yao Lim.