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Current Management of Male Infertility, An Issue of Urologic, E-Book

Current Management of Male Infertility, An Issue of Urologic, E-Book

Craig S Niederberger

(2014)

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Abstract

Current Management of Male Infertility, An Issue of Urologic, E-Book

Table of Contents

Section Title Page Action Price
Front Cover Cover
Current Managementof Male Infertility i
Copyright\r ii
Contributors v
Contents ix
Forthcoming Issues xiii
Current Management of Male Infertility xv
The Field of Male Infertility Moves Fast! xvii
Genetics of Male Infertility 1
Key points 1
Introduction 1
Phenotype definitions 2
Genetics background 4
Basic Genetics 4
DNA mutations 4
DNA polymorphisms 4
Genetic Disorders 4
Current genetic tools 7
Congenital Bilateral Absence of the Vas Deferens 7
Karyotype Abnormalities 8
Karyotype 8
47,XXY KS 9
46,XX male syndrome 9
Other karyotype abnormalities 10
Y Chromosome Microdeletions 10
Hormone Levels and Epigenetics 11
Hormone levels 11
Epigenetics 12
Genetics of male infertility in 2034 12
Summary 13
References 13
The Office Visit 19
Key points 19
Introduction 19
The history and physical examination 20
History 20
Physical Examination 22
Initial laboratory assessment 22
The Semen Analysis 22
The Endocrine Evaluation 22
Imaging in the male infertility office evaluation 23
Interpretation of the initial evaluation 23
Normal Semen Parameters 23
Defects in isolated semen parameters 24
Seminal Volume Abnormalities 24
Abnormalities in Sperm Concentration 24
Oligospermia 24
Azoospermia 25
Abnormalities in motility 25
Abnormalities in morphology 26
Multiple semen abnormalities 26
Other seminal abnormalities 26
Leukocytospermia 26
Additional semen tests 27
ROS 27
DNA Fragmentation 27
Fluorescent in situ Hybridization 28
The genetic evaluation 28
Congenital Bilateral Absence of the Vasa and Cystic Fibrosis Gene Mutations 28
Karyotype-Associated Abnormalities 28
Y-chromosome Microdeletions 29
The year is 2034 29
Evolving Genomic Assessments 29
The Role of Proteomics and Metabolomics 30
Changes in Insurance Coverage and Referral Patterns 30
Summary 31
References 31
Male Endocrine Dysfunction 39
Key points 39
Introduction 39
Male endocrine physiology 39
HPG Axis 40
Nongonadotrope Hormones 40
Male endocrine dysfunction 42
Endogenous Dysfunction 42
Iatrogenic Dysfunction 43
Endogenous influences from outside the HPG axis 45
Growth Hormone 45
Treatment 45
Conservative Therapy 45
Pituitary Stimulation 46
Future therapy 48
Gene Therapy 48
Autologous Hormone Replacement 49
Summary 49
References 50
Lifestyle, Environment, and Male Reproductive Health 55
Key points 55
Introduction 55
Personal health factors 55
Diet 55
Exercise 56
Obesity 56
Psychological Stress 57
Substances of abuse 57
Alcohol 57
Cigarette Smoking 58
Marijuana 59
Anabolic Steroids 59
Opiates 59
Environmental factors 60
Cell Phone Use 60
Pollution 61
Heat Exposure 61
Trends in environment, lifestyle, and reproductive health: predictions for 2033 62
Summary 63
References 63
Infectious, Inflammatory, and Immunologic Conditions Resulting in Male Infertility 67
Key points 67
Introduction 67
Inflammation—effect on the male reproductive tract 68
Inflammatory conditions potentially associated with male infertility 69
Prostatitis 69
Epididymitis 71
Orchitis 71
Urethritis 71
Pyospermia: a marker of reproductive tract inflammation? 71
Infections—effect on the male reproductive tract 72
Infections—C trachomatis 72
Infections—N gonorrhoeae 73
Infections—other bacterial STDs 73
Infections—non-STD bacteria 74
Infections—viruses 75
Inflammation, infections, and antisperm antibodies 75
Summary 77
References 77
Obstructive Azoospermia 83
Key points 83
Background 83
Causes 83
Diagnosis 84
Treatment and outcomes 86
VV/VE Surgical Principles 87
EDO 90
Alternatives to Reconstruction, MESA 90
Perspective of the future: obstructive azoospermia 92
Summary 92
Supplementary data 92
References 92
Azoospermia due to Spermatogenic Failure 97
Key points 97
Introduction 97
Causes of Spermatogenic Failure 97
Cryptorchidism 98
Endocrinologic abnormalities 98
Varicocele 98
Other acquired causes of spermatogenic failure 98
Histologic Diagnoses in Spermatogenic Failure 98
Genetic basis of spermatogenic failure 99
Chromosomal Abnormalities—Klinefelter Syndrome 99
Other Chromosomal Structural Abnormalities 99
Y Chromosomal Microdeletions 100
Medical therapy for spermatogenic failure 100
Specific Endocrine Therapy 100
Gonadotropin replacement therapy 100
Dopamine receptor agonists 101
Empiric Endocrine Therapy 101
Gonadotropin replacement therapy 101
Empiric selective estrogen receptor modulators (SERM) 102
Aromatase inhibitor therapy 102
Surgical therapy for spermatogenic failure 102
Varicocelectomy 103
Sperm Retrieval Techniques 103
FNA/TESA 103
Testicular sperm extraction 104
Microdissection TESE 104
Complications 105
Fresh Versus Frozen Sperm 105
Surgical Sperm Retrieval Rates According to Etiology of Spermatogenic Failure 106
KS 106
Cryptorchidism 106
Postchemotherapy azoospermia 106
Microdeletions in the AZF region of the Yq 107
Uniform MA 107
Sertoli cell only 107
Future directions in the treatment of spermatogenic failure 107
Stem Cell Therapy 107
Gene Therapy 108
Summary 108
References 108
Ejaculatory Dysfunction 115
Key points 115
Introduction 115
Anatomy of the ejaculatory apparatus 115
Epididymis 115
Vas Deferens 116
Seminal Vesicles 116
Ejaculatory Ducts 116
Bladder Neck 116
External Urethral Sphincter 116
Perineal Periurethral Muscles 116
Neurophysiology of ejaculation 116
Spinal Ejaculation Generator 117
Cortical Input to the Spinal Ejaculation Generator 117
Afferent Sensory Input to the Spinal Ejaculation Generator 118
Efferent Sympathetic Output from the Spinal Ejaculation Generator 118
Efferent Somatic Output from the Spinal Ejaculation Generator 118
Temporal sequence of the ejaculatory process 118
Disorders resulting in ejaculatory failure 119
RPLND 119
Various Types of Pelvic Surgery 120
Inguinal Herniorrhaphy 120
Neurologic Illnesses 120
Diabetes Mellitus 121
Traumatic SCI 121
Treatment strategies for ejaculatory failure 121
Oral Sympathomimetic Medications 121
PVS 122
Rectal Probe Electroejaculation 123
Direct Microsurgical Sperm Harvesting 124
Summary and the future 124
References 124
The Varicocele 129
Key points 129
Historical perspective 129
Anatomy 130
Pathophysiology 131
Presentation 133
Diagnosis 133
Ultrasonography 134
Venography 134
Treatment indications 135
Infertility 135
Hypogonadism 136
Symptomatic Varicoceles 136
Treatment options 137
Inguinal and Subinguinal Approach 137
Alternative Surgical Approaches 138
Percutaneous Venous Occlusion 138
Treatment outcomes 139
Varicocelectomy in 2034: what does the future hold? 140
References 140
Male Contraception 145
Key points 145
Introduction 145
Currently available methods 145
Condoms 145
Vasectomy 145
Hormonal 146
Pure Androgen 147
Ethnic Differences 148
Testosterone + Progestin 148
Oral Testosterone 149
Implants 149
Transdermal 150
Addition of GnRH Antagonists 151
7α-Methyl-19-Nortestosterone 151
Overview of Hormonal Contraceptives 151
Nonhormonal contraception 152
Pharmacologic 152
Gossypol 152
Triptolide 152
Indenopyridines 152
Lonidamine derivates 152
Testicular retinoic acid inhibition 153
Calcium channel blockers 153
Sperm Na+/H+ exchanger 153
Inhibitors of glycosphingolipid synthesis 154
Bromodomain BRDT inhibitor (JQ1) 154
Thermal 154
Ultrasound 154
Vasal Occlusion/Interruption 154
Intravas device 154
Reversible inhibition of sperm under guidance 155
Immunologic 155
Summary 156
Future perspectives 156
References 156
Semen Assessment 163
Key points 163
Introduction 163
Initial assessment 163
Laboratory examination 164
Interpretation of semen analysis 164
Future considerations: a look to year 2040 and beyond 165
References 166
Identification and Preparation of Sperm for ART 169
Key points 169
Introduction 169
Modern era of ART 170
Principles of sperm selection 170
Conventional sperm selection methods 170
Sperm Washing 170
Migration Techniques 171
DGC 171
Filtration 171
Advanced sperm selection methods 172
Sperm Maturity 172
Sperm Ultramorphology 172
Sperm Surface Electric Charge 173
Separation of Apoptotic and Nonapoptotic Sperm 173
DNA damage 174
Aneuploidy 174
Sperm-oocyte interaction 174
Optimizing sperm function in vitro 175
Pentoxifylline 175
Hypoosmotic Sperm Swelling 175
Bicarbonate 175
Platelet Activating Factor 175
ROS Scavengers 176
Future techniques 176
RMS 176
Confocal Light Absorption and Scattering Spectroscopic Microscopy 176
Polarizing Microscopy 176
Summary 177
References 177
The Role of Nutraceuticals in Male Fertility 181
Key points 181
Introduction 181
Oxidative stress 181
Antioxidants 182
Definition of nutraceuticals 182
Review of nutraceuticals 182
Arginine 182
Carnitines 182
Coenzyme Q10 184
Folic Acid (Folate) 184
Glutathione 184
Lycopene 185
Omega Fatty Acids 185
Phytoestrogens 185
Selenium 186
Vitamin A 187
Vitamin C 187
Vitamin E 187
Zinc 188
Discussion 188
Summary 189
References 189
The Epidemiology of Male Infertility 195
Key points 195
Introduction 195
Epidemiology 196
Infertility 197
Male infertility 198
Incidence of male infertility 198
Secular or birth cohort trends in diagnosis 200
Racial variation 201
Geographic variation 201
Infertility in unique exposure populations: obesity as an example 201
Summary and limits to epidemiologic analysis of male infertility 202
Research moving forward 202
References 203
Reproductive Health Care Delivery 205
Key points 205
Introduction 205
What constitutes reproductive health care? 205
Changes in reproductive health care through time 206
Models of reproductive health care delivery 207
Fee For Service 207
State-mandated Coverage 207
Winfertility: A Private, Bundled Model 208
Reproductive Endocrinologist Group Risk-sharing Model 208
Counsyl: Flat-rate Genetic Testing 208
Federal Title X 208
Federal/State: Medicaid 209
Military Personnel and Tricare 209
Veterans Health Administration 209
Should reproductive health care be covered? 209
The future of reproductive health care 210
References 210
Index 213