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Ageing and Endocrine System

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1 Ageing and Endocrine System
11NOV2008 Staff Lecture Ageing and Endocrine System Jeong-taek Woo Department of Endocrinology and Metabolism Kyung Hee University School of Medicine

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3 Aging A continuous, universal, progressive, intensive, deleterious, but democratic phenomenon Secondary aging, pathologic aging

4 Theories of ageing Genetic Oxidative stress Mitochondrial dysfunction
Hormonal change Telomere shortening Defective host defenses Accumulation of senescent cells

5 Antiaging theory in the late 1800s
Cellular theory Elie Metchnikoff Charles A. Stephens Nutrition and hygiene Arnold Berthold ( ) atrophy of the comb in castrated roosters reversed by returning the testes of the castrated rooster to the abdomen

6 Birth of Endocrinology and Elixir of life (in June 1889 at the Societe de Biologie in Paris) published in the July 20, 1889 issue of The Lancet Charles Edouard Brown-Sequard ( )

7 Advertisement depicting Brown-Sequard type elixir of life called Sequarine. Originally published in Strand Magazine in 1912

8 Autoplastic rejuvenation
Eugen Steinach ( )

9 Sex gland transplantation
Serge Voronoff ( )

10 Monkey Gland Type: Cocktail Primary alcohol by volume: Gin Absinthe
Standard drinkware: Cocktail glass Commonly used ingredients: 1 part gin 1 part orange juice dash absinthe dash grenadine Preparation: Shake well over ice cubes in a shaker, strain into a chilled cocktail glass.

11 Human testis transplantation in United States
Victor D. lespinasse ( ) Frank Lydston ( ) Published in the Journal of the American Medical Association in 1916 Leo L. Stanley ( ) Published in the journal of Endocrinology in 1922.

12 John R Brinkley (1885-1942) Performed more than 16,000 transplants
Revoked his medical lincense Originally printed in New York Evening Journal

13 Main neuroendocrinal changes in aging

14 Insulin resistance and carbohydrate metabolism – glucose intolerance and diabetes
Calcium and bone metabolism – osteoporosis Hypothalamic-pituitary thyroid axis – thyroid dysfunction Fat metabolism and body composition – fat accumulation Pineal gland and body composition – insomnia and disordered circadian rhythms Thymus and immunological sequelae – tendency to infections

15 Somatopause Annals of Internal Medicine 2007, 146:

16 AL. Barkan, Nature Clinical Practice Endocrinology & Metabolism July 2007, 3: 509
Peris TT et al, Journal of American Medical Association 2005, 294:

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19 Diagnosis of GHD in adulthood
Who to test Those with signs and symptoms of hypothalamic pituitary disease (endocrine, structural, and/or genetic causes) Those who have received cranial irradiation or tumor treatment Those with traumatic brain injury (TBI) or subarachnoid hemorrage Idiothathic isolated GHD occuring de novo in the adult is not a recognized entity Consensus guidelines for the diagnosis and treatment of adults with GH deficiency II: A statement of the GH Research Society in association with the European Society for Pediatric Endocrinology, Lawson Wilkins Society, European Society of Endocrinology, Japan Endocrine Society, And Endocrine Society of Austrailia. European Journal of Endocrinology (2007) 157,

20 Andropause

21 J Clin Endocrinol Metab 89:4789-4796, 2004

22 Menopause

23 Benefits and risks of postmenopausal hormone therapy (HT)
Definite benefits Menopausal symptoms Osteoporosis Definite risks Endometrial cancer Venous thromboembolism Breast cancer Probable or uncertain risks or benefits CVD Primary prevention increase in risk Secondary prevention early increase in risk Gallbladder disease increase in risk Colorectal cancer decrease in risk Cognitive dysfunction decrease in risk

24 Flowchart for identifying appropriate candidates for postmenopausal hormone-replacement therapy (HRT) N Eng J Med 345:34-40, 2001

25 DHEA, an prohormone of sex steroids
Journal of Endocrinology 2005, 187:

26 Adrenopause Horm Res 2004;62(suppl 3);

27 Mechanism of decreased production of DHEA-S and dissociation of cortisol and DHEA-S synthesis with aging Horm Res 2004;62(suppl 3);

28 Dehydroepiandrosterone in adrenal insufficiency and ageing
Dehydroepiandrosterone in adrenal insufficiency and ageing. Bhagra S, et al Curr Opin Endocrinol Diabetes Obes Jun;15(3):239-43 Dehydroepiandrosterone replacement increases bone mineral density in elderly subjects; however, the effect is relatively small compared with established therapies for osteoporosis. No additional benefits have been identified for long-term dehydroepiandrosterone replacement, when used in the elderly to prevent or delay ageing. Dehydroepiandrosterone replacement may improve some metabolic variables and measures of psychological well-being in adrenal deficiency, but these benefits are not consistently sustained in long-term therapy. Long-term studies are needed to confirm sustained benefits in adrenal deficiency and establish long-term safety.

29 Summary of the significant age-related changes that have been measured in the CNS
Endocrine Review April 2005, 26(2):

30 Systems approach vs Reductionist methods Lifestyle modication


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