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Estrogen Treatment and Estrogen Suppression: Metabolic Effects in Adolescence
Nemours Children’s Clinic and Research Programs, Jacksonville, Florida and Johns Hopkins University School of Hygiene and Public Health, Baltimore, Maryland, USA
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Nelly Mauras
Veröffentlicht/Copyright:
22. Juli 2014
ABSTRACT
The metabolic consequences of reaching full reproductive maturity in humans involve not only growth hormone (GH) and insulin-like growth factor-I, but also the collaborative interaction of the gonadal sex steroids. Estrogen is critical for completing linear growth. It also inhibits bone resorption, decreases plasma lipid levels and serves as an antiatherosclerotic agent. Our studies show that, in low doses, estrogen increases GH production, increases calcium absorption and decreases bone turnover; however, unlike testosterone, estrogen has no effects as a protein-anabolic agent, at least at the whole body level. Studies of selective estrogen suppression, achieved using a potent aromatase inhibitor, show that estrogen is the main regulator of the gonadotropin axis. In boys, selective aromatase blockade may have a role in delaying epiphyseal fusion. Large placebo-controlled trials will be required to study this effect further.
Keywords: anastrozole; aromatase; calcium metabolism; estrogen; protein metabolism; puberty; stable isotopes; testosterone
Published Online: 2014-07-22
Published in Print: 2000-12-01
© 2014 by Walter de Gruyter Berlin/Boston
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Artikel in diesem Heft
- Titelei
- TABLE OF CONTENTS
- Foreword
- What Happens When Growth Hormone is Discontinued at Completion of Growth? Metabolic Aspects
- Growth Hormone Deficiency and Peak Bone Mass
- Optimal Strategy for Management of Pituitary Disease in the Growth Hormone-Deficient Teenager
- Ethical Dilemmas in Pediatric Endocrinology: Growth Hormone for Short Normal Children
- Evidence-Based Approach to Growth Hormone Replacement Therapy in Adults, with Special Emphasis on Body Composition
- Evidence-Based Growth Hormone Therapy Prediction Models
- New Paradigms for Growth Hormone Treatment in the 21st Century: Prediction Models
- Role of Insulin-like Growth Factor Monitoring in Optimizing Growth Hormone Therapy
- Knockout Mice Challenge Our Concepts of Glucose Homeostasis and the Pathogenesis of Diabetes Mellitus
- Type 2 Diabetes Mellitus in Children: Pathophysiology and Risk Factors
- Emergence of Type 2 Diabetes Mellitus in Children: Epidemiological Evidence
- Treatment of Type 2 Diabetes Mellitus in Children and Adolescents
- Diagnosis of Maturity-Onset Diabetes of the Young in the Pediatric Diabetes Clinic
- Thrifty Genotypes and Phenotypes in the Pathogenesis of Type 2 Diabetes Mellitus
- Estradiol: A Protective Factor in the Adult Brain
- Estrogen Treatment and Estrogen Suppression: Metabolic Effects in Adolescence
- Estrogen, Bone, Growth and Sex: A Sea Change in Conventional Wisdom
- Route-Dependent Endocrine and Metabolic Effects of Estrogen Replacement Therapy
- Telomerase and the Cellular Lifespan: Implications for the Aging Process
- Human Aging and Progeria
- A Role for the Somatotropic Axis in Neural Development, Injury and Disease
- Hypothalamic Growth Hormone-Insulin-like Growth Factor-I Axis across the Human Life Span
- The Lost Voice: A History of the Castrato
- SELECTED POSTER ABSTRACTS
- GROWTH. FETAL GROWTH. SGA
- SYNDROMES: TURNER. PRADER-WILLI. NOONAN. PHP. OTHERS
- GHD. HYPOPITUITARISM. KIGS
- METABOLIC. GENETIC. ADULT. ACROMEGALY
- GH. IGF. IGFBPs
- GROWTH IN SYSTEMIC DISEASE. CRI. RICKETS. STEROIDS
Schlagwörter für diesen Artikel
anastrozole;
aromatase;
calcium metabolism;
estrogen;
protein metabolism;
puberty;
stable isotopes;
testosterone
Artikel in diesem Heft
- Titelei
- TABLE OF CONTENTS
- Foreword
- What Happens When Growth Hormone is Discontinued at Completion of Growth? Metabolic Aspects
- Growth Hormone Deficiency and Peak Bone Mass
- Optimal Strategy for Management of Pituitary Disease in the Growth Hormone-Deficient Teenager
- Ethical Dilemmas in Pediatric Endocrinology: Growth Hormone for Short Normal Children
- Evidence-Based Approach to Growth Hormone Replacement Therapy in Adults, with Special Emphasis on Body Composition
- Evidence-Based Growth Hormone Therapy Prediction Models
- New Paradigms for Growth Hormone Treatment in the 21st Century: Prediction Models
- Role of Insulin-like Growth Factor Monitoring in Optimizing Growth Hormone Therapy
- Knockout Mice Challenge Our Concepts of Glucose Homeostasis and the Pathogenesis of Diabetes Mellitus
- Type 2 Diabetes Mellitus in Children: Pathophysiology and Risk Factors
- Emergence of Type 2 Diabetes Mellitus in Children: Epidemiological Evidence
- Treatment of Type 2 Diabetes Mellitus in Children and Adolescents
- Diagnosis of Maturity-Onset Diabetes of the Young in the Pediatric Diabetes Clinic
- Thrifty Genotypes and Phenotypes in the Pathogenesis of Type 2 Diabetes Mellitus
- Estradiol: A Protective Factor in the Adult Brain
- Estrogen Treatment and Estrogen Suppression: Metabolic Effects in Adolescence
- Estrogen, Bone, Growth and Sex: A Sea Change in Conventional Wisdom
- Route-Dependent Endocrine and Metabolic Effects of Estrogen Replacement Therapy
- Telomerase and the Cellular Lifespan: Implications for the Aging Process
- Human Aging and Progeria
- A Role for the Somatotropic Axis in Neural Development, Injury and Disease
- Hypothalamic Growth Hormone-Insulin-like Growth Factor-I Axis across the Human Life Span
- The Lost Voice: A History of the Castrato
- SELECTED POSTER ABSTRACTS
- GROWTH. FETAL GROWTH. SGA
- SYNDROMES: TURNER. PRADER-WILLI. NOONAN. PHP. OTHERS
- GHD. HYPOPITUITARISM. KIGS
- METABOLIC. GENETIC. ADULT. ACROMEGALY
- GH. IGF. IGFBPs
- GROWTH IN SYSTEMIC DISEASE. CRI. RICKETS. STEROIDS
