Endogenous sex steroids and circulating homocysteine in healthy Greek postmenopausal women

George E. Christodoulakos, Irene V. Lambrinoudaki, Demetrios A. Rizos,  Andreas Alexandrou, Apostolos V. Kountouris, George C. Creatsas

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OBJECTIVE: The determinants of serum homocysteine in healthy postmenopausal women remain uncertain. The aim of this study was the assessment of the association of endogenous sex steroids with serum homocysteine levels in healthy postmenopausal women not on hormone therapy…

Doping: a challenge to the endocrinologist. A reappraisal in view of the Olympic Games of 2004

Leonidas H Duntas, Constantinos Parisis

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The aim of this review is to provide an update on drug abuse by athletes, their mode of action and the technical difficulties of detection. The most common doping agents are the anabolic steroids (AS), testosterone derivatives modified to take advantage of the anabolic rather than the androgenic properties of the hormone…

The influence of exercise on growth hormone and testosterone in prepubertal and early-pubertal boys

Charilaos Tsolakis, Paraskevi Xekouki, Socratis Kaloupsis, Dimitrios Karas, Dimosthenis Messinis, George Vagenas, Athanasios Dessypris

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The purpose of this study was two fold a) to determine the levels of hormonal parameters which are related to growth and sexual maturation (T, SHBG, FAI, GH) in 66 pre-pubertal and early-pubertal boys (11-13 years old) who systematically engage in individual and team sports activities of endurance, strength, speed and skill, respectively …

The endocrinology of baldness

Menelaos L. Batrinos

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Male pattern baldness, scientifically known as androgenetic alopecia (AGA), is a very common condition, universally prevalent, which progresses with aging. The loss of scalp hair of any degree both in men and women is a cause of considerable psychological distress …

Klinefelter Syndrome and medical treatment: hypogonadism and beyond

Simon Chang, Anne Skakkebæk, Claus Højbjerg Gravholt

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Klinefelter syndrome (KS), though described more than 70 years ago, still imposes significant diagnostic challenges. Based on data from epidemiological studies, KS is associated with increased morbidity and mortality. Although the pathophysiology and etiology behind these observations are as yet not well understood …

Impact of dietary modification of advanced glycation end products (AGEs) on the hormonal and metabolic profile of women with polycystic ovary syndrome (PCOS)

Evangelia Tantalaki, Christina Piperi, Sarantis Livadas, Anastasios Kollias, Christos Adamopoulos, Aikaterini Koulouri, Charikleia Christakou, Evanthia Diamanti-Kandarakis

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OBJECTIVE: To investigate the impact of dietary intervention on Advanced Glycation End products (AGEs) intake on the hormonal and metabolic profile in women with polycystic ovary syndrome (PCOS). METHODS: After baseline evaluation, 23 women with PCOS …

Late-onset hypogonadism in men. Experience from the Turku Male Ageing Study (TuMAS)

Ilpo Huhtaniemi, Juuso I. Mäkinen, Antti Perheentupa, Olli T. Raitakari

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Interest has arisen during the last 10 years as to the possible connection between the age-related decline in androgen production and symptoms of ageing in men. A new ageing-related syndrome with several descriptive names …

Sex steroids and sex hormone-binding globulin in postmenopausal women with nonalcoholic fatty liver disease

Stergios A. Polyzos, Jannis Kountouras, Agathocles Tsatsoulis, Efthimia Zafeiriadou, Evangelia Katsiki, Kalliopi Patsiaoura, Christos Zavos, Vasiliki V. Anastasiadou, Aristidis Slavakis

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OBJECTIVE: The evaluation of serum sex steroids and sex hormone-binding globulin (SHBG) levels in postmenopausal women with nonalcoholic fatty liver disease (NAFLD) and their association to the disease severity. DESIGN: Twenty-two postmenopausal women with biopsy-proven NAFLD …

Hypogonadism as a possible link between metabolic diseases and erectile dysfunction in aging men

Giovanni Corona, Silvia Bianchini, Alessandra Sforza, Linda Vignozzi, Mario Maggi

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There is evidence demonstrating that sexual complaints represent the most specific symptoms associated with late onset hypogonadism, while central obesity is the most specific sign. In obese men, hypogonadism can further worsen the metabolic profile and increase abdominal fat …

Sex steroids and personality traits in the middle luteal phase of healthy normally menstruating young professional women

Pavlina D. Avgoustinaki, Effrosyni Mitsopoulou, Gregorios Chlouverakis, Theoni Triantafillou, Maria Venihaki, Sofia Koukouli, Andrew N. Margioris

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OBJECTIVE: Sex steroids affect human behavior. The aim of the present study was to determine the associations, if any, between the circulating levels of gonadal and adrenal sex steroids in the mid luteal phase (21st day of a normal menstrual cycle, MC) of young professional …

Hypogonadism in young men treated for cancer

Aleksander Giwercman, Yvonne Lundberg Giwercman

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An ever-increasing proportion of young males treated for cancer are cured. Therefore, one of the major challenges of modern Clinical Oncology is to ensure good quality of life. Cancer disease per se as well as cancer treatment may have a negative impact on androgen production, thereby leading to subclinical or clinically overt hypogonadism …

Male contraception: a clinically-oriented review

George A. Kanakis, Dimitrios D. Goulis

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Despite the variety of available female contraceptive methods, many pregnancies (~50%) are still undesired. Many men (>60%) want to participate equally with their partner in family planning; however, male contraceptive methods (MCMs) account for only 14% of those used worldwide and no pharmaceutical MCM is available so far …

Effect of different seasonal strength training protocols on circulating androgen levels and performance parameters in professional soccer players

Nikolaos E. Koundourakis, Nikolaos Androulakis, Eirini C. Spyridaki, Elias Castanas, Niki Malliaraki, Christos Tsatsanis, Andrew N. Margioris

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OBJECTIVE: To examine the effects of three seasonal training programs, largely different in strength volume, on androgen levels and performance parameters in soccer players. DESIGN: Sixty-seven soccer players, members of three different professional teams, participated in the study …

Effects of testosterone and estradiol on stress-induced adrenal and hippocampal weight changes in female rats

Anastasia Sfikakis, Pothitos M. Pitychoutis, Aikaterini Tsouma, Ioanna Messari, Zeta Papadopoulou-Daifoti

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OBJECTIVE: To examine the impact of circulating testosterone (T) and the T/Estradiol (T/Ediol) ratio on chronic stress-induced changes of adrenal and hippocampal weight during proestrus (PE) and estrus (E) in female rats. DESIGN: Stress was composed of repeated vaginal smear screening (VSS) and measured by the emotional reactivity score …