Neuroendocrinology of Appetite ( Wiley-INF Masterclass in Neuroendocrinology Series )

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Description

This cutting-edge, interdisciplinary volume  describes established and state of the art approaches for exploring the pathways that influence and control appetite, including: behavioural, electrophysiological, neuroanatomical, gene knockout and pharmacological techniques.   The book presents key peptide and neurotransmitter systems, together with newly emerging concepts of metabolic signalling and hypothalamic inflammation.  The impact of early life experience on neuroendocrine appetite circuits is also looked at, including early programming of these circuits by circulating hormones.  Finally, new emerging therapeutic approaches to appetite suppression are discussed, including those linked to bariatric (weight loss) surgery.

Neuroendocrinology of Appetite is especially focused on established and emerging technologies and approaches for investigating appetite control.  It is written so as to provide an overview of sufficient depth for an undergraduate or new scientist in the field to come up to speed in the complementary approaches used by researchers in this field. Taking an interdisciplinary approach, the book aims to appeal to all those with a basic, clinical or therapeutic interest in research into obesity and eating disorders. 

Chapter

1.6 The importance of distributed neural networks extending to the brainstem

1.7 Perspectives

Glossary

Cited references

Further recommended reading

Chapter 2 Afferent Endocrine Control of Eating

Introduction

2.1 Background

2.1.1 Historical aspects

2.1.2 Categorization of hormones

2.2 Gastrointestinal hormones that affect eating

2.2.1 General

2.2.2 Ghrelin

2.2.3 Cholecystokinin (CCK)

2.2.4 Glucagon-like peptide-1 (GLP-1) and peptide tyrosine tyrosine (PYY)

2.3 Adiposity signals

2.3.1 Leptin

2.3.2 Insulin and amylin

2.4 Interactions among hormones – from single meals to energy homeostasis

2.4.1 General

2.4.2 Leptin and CCK

2.4.3 Other interactions

2.5 Perspectives

Glossary

Cited references

Further recommended reading

Chapter 3 Ontogeny of Neuroendocrine Feeding Circuits

Introduction

3.1 Major stages of hypothalamic development

3.1.1 Neurogenesis and cellular specification

3.1.2 Neuronal migration

3.1.3 Axon growth

3.1.4 Synapse formation

3.2 Developmental aspects of the hypothalamic response to metabolic hormones

3.2.1 Expression pattern of metabolic hormones during perinatal life

3.2.2 Ontogeny of the response of hypothalamic neurons to metabolic hormones

3.3 Hormonal control of hypothalamic development

3.4 Development of appetite‐related circuits in obesity‐related conditions

3.4.1 Animal model of perinatal obesity

3.4.2 Perinatal obesity causes hypothalamic hormonal resistance

3.4.3 Molecular changes observed in the hypothalamus of animals exposed to an obesogenic environment during perinatal life

3.4.4 Structural changes associated with perinatal obesity

3.5 Perspectives

Glossary

Cited references

Chapter 4 Hypothalamic Peptides and Meal Patterns

Introduction

4.1 Analysis of how animals feed

4.1.1 Meal pattern analysis

4.1.2 Licking microstructural analyses

4.2 The hypothalamus and feeding‐related behavior

4.3 Neuropeptides involved in feeding‐related behavior

4.3.1 Neuropeptide Y (NPY)

4.3.2 α-Melanocyte-stimulating hormone (α-MSH)

4.3.3 Orexins

4.3.4 Melanin-concentrating hormone (MCH)

4.4 Peripheral peptides with central sites of action that affect food intake

4.4.1 Leptin

4.4.2 Ghrelin

4.5 Future perspectives

Glossary

Cited References

Chapter 5 Food Hedonics: Insight from Animal Models

Introduction

5.1 Food hedonics

5.2 Animal models of food hedonics

5.2.1 Historic landmarks

5.2.2 How are hedonic responses to food investigated? Behavioral neuroscience methods

5.3 Excessive feeding: binge eating and food addiction

5.3.1 Binge eating models in rodents

5.3.2 Food addiction controversy

5.4 Hormonal regulation of food hedonics

5.5 Conclusions

5.6 Perspectives

Acknowledgements

Glossary

Cited references

Chapter 6 Functional and Anatomical Dissection of Feeding Circuits

Introduction

6.1 AgRP neuron circuits that regulate appetite

6.1.1 Neuron ablation

6.1.2 Optogenetic activation

6.1.3 Chemogenetic activation and inhibition

6.1.4 Local AGRP neuron circuits

6.1.5 Long-range AgRP neuron circuits for feeding

6.2 Second-order circuit nodes downstream of AgRP neurons

6.2.1 BNST and LatH circuits

6.2.2 ARCAgRP→PVN circuits

6.2.3 PBN and CEA circuits

6.3 Third-order nodes downstream of AgRP neurons that elevate food intake

6.4 Circuits presynaptic to AgRP neurons

6.5 Perspectives

Glossary

Cited references

Chapter 7 Exploring Appetite and Hypothalamic Circuitry through Manipulating Gene Expression

Introduction

7.1 Genetics and obesity

7.1.1 Mouse strain considerations

7.2 Central control of energy balance

7.3 Transgenic technology basics

7.3.1 ‘Conventional’ knockout and transgenic mice

7.3.2 Limitations of germ line deletions for metabolic studies

7.3.3 Temporal control from BAC transgenics

7.4 Temporal and spatial control of transgenic genes

7.4.1 Outline of the recombinase technologies

7.4.2 Spatial control with the Cre-loxP technology

7.4.3 Cautionary notes on Cre

7.4.4 Temporal and/or inducible systems

7.5 CRISPR/Cas mediated genome engineering

7.6 Perspectives

Glossary

Cited references

Further recommended reading

Chapter 8 Electrophysiology of the Appetite-Regulating Circuits of the Hypothalamus

Introduction

8.1 Background

8.2 Gut–brain signaling

8.3 Central signaling

8.4 Electrophysiological studies of appetite signaling

8.4.1 In vitro

8.4.2 Hypothalamic electrophysiology in vivo

8.5 Perspectives

Glossary

Cited references

Further recommended reading

Chapter 9 Functional Neuroimaging of Appetite and Gut–Brain Interactions

Introduction

9.1 Appetite and the brain

9.2 Functional neuroimaging techniques

9.2.1 Positron emission tomography (PET)

9.2.2 BOLD functional magnetic resonance imaging (fMRI)

9.2.3 Perfusion fMRI (arterial spin labeling, ASL)

9.2.4 Electroencephalography (EEG) and magnetoencephalography (MEG)

9.3 Gut–brain interactions: appetite hormones versus brain responses

9.3.1 Effects of hormone or nutrient administration on the brain

9.4 Perspectives

Glossary

Cited references

Further recommended reading

Chapter 10 Appetite Disorders: From Binge Eating to Anorexia Nervosa

Introduction

10.1 Etiology of eating disorders

10.2 Eating disorders: subtypes and diagnosis

10.2.1 Anorexia nervosa

10.2.2 Bulimia nervosa

10.2.3 Binge eating disorder

10.3 Animal models of eating disorders

10.3.1 Animal models of ‘binge eating’

10.3.2 Animal models of ‘anorexia nervosa’

10.4 Underlying mechanisms and targets for treatment

Glossary

Cited references

Chapter 11 Future Prospects of the Management of Appetite Disorders: Bariatric Surgery

Introduction

11.1 Historical perspective on bariatric surgery

11.2 Bariatric procedures

11.3 Neurobiological effects and mechanisms

11.3.1 Food intake

11.3.2 Hypothalamic signaling

11.3.3 Gut hormones

11.3.4 Vagal signaling

11.4 Food preferences

11.5 New knowledge emerging

11.6 Conclusions

11.7 Perspectives

Glossary

Cited references

Further recommended reading

Chapter 12 Discovery of New Drugs for Weight Loss and Prevention of Weight Regain

Introduction

12.1 Background

12.2 The drug discovery process

12.2.1 The phases of drug discovery and development

12.2.2 Target identification, selection, and validation

12.2.3 Lead identification including in vitro screening

12.2.4 Animal models, in vivo screening

12.2.5 Validity of animal models

12.2.6 Clinical studies

12.3 Drug combinations in obesity

12.4 Multiselective therapeutics (MT)

12.4.1 Molecular modalities

12.5 The postobese state

12.5.1 Physiology of the weight-reduced state (see Tables 12.7 and 12.8)

12.5.2 Effects of nutritional status on response to pharmacotherapy

12.6 Perspectives

Glossary

Cited references

Index

EULA

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