Reversing Sex Steroid Deficiency and Optimizing Skeletal Development in the Adolescent with Gonadal Failure

Author(s):  
Dirk Vanderschueren ◽  
Liesbeth Vandenput ◽  
Steven Boonen
2021 ◽  
Vol 9 (B) ◽  
pp. 806-810
Author(s):  
Ahmed Ansaf ◽  
Safaa A. Faraj ◽  
Safaa Kazem

 Thalassemia Major still a growing disease in Iraq with no clear plan for prevention.  Failure to get a secondary sexual character, amenorrhea, and then the inability to get pregnant is one the increasingly common problems in female patients with huge burden effects. Despite recent advances in iron chelation therapy, still, excess iron deposition in pituitary gonadotropic and gonadal cells remains one of the major causes for gonadal failure. Objectives: To evaluate the effect of iron overloads measured by serum ferritin on pituitary gonadotrophins measured by FSH, LH, and the gonadal sex steroid measured by estrogen in pubertal females with thalassemia Major. Methods: 41 female patients randomly selected in a cross-sectional study with diagnosed Thalassemia Major registered in Al-Kut Hereditary Blood Disease Center in the south of Iraq. Demographic data were evaluated including (age, type of chelation therapy, compliance for treatment and mean hemoglobin levels, and presence of amenorrhea). Serum ferritin, hemoglobin, FSH, LH, Estrogen levels were collected from patient's files.  Results:   the age of the studied sample were range from 14-43 years. The majority of the studied patients 33(80.5%) were suffering from primary amenorrhea and only six had a normal menstrual cycle. Twenty-six (63.4%) patients had serum ferritin levels of more than 3000 ng/dl. A low average serum FSH, LH, and Estrogen concentration were observed in the group with serum ferritin levels more than 3000ng/dl in a statistically significant p-value, 0.001, 0.002, and 0.003 respectively with inverse Pearson's correlation (-0.4 and p-value 0.0009 for FSH), (- 0.2 with no significant p-value 0.12, for LH) and (-0.3 with significant p. value 0.02 for estrogen level).  Conclusions:  In this study majority of females with thalassemia, Major suffer from disruption of pituitary gonadotropins and possible gonadal sex steroid. High ferritin still is a statistically significant risk factor for gonadal failure. The needs for more strict iron control, early screening, and proper treatment of gonadotropin and gonadal sex steroid deficiency around the age of 13 years are essential to be offered. More studies and a larger sample are needed to confirm and/or add other risk factors in pubertal thalassemic females.      


Author(s):  
Na Ri Kim ◽  
Rougin Khalil ◽  
Karel David ◽  
Leen Antonio ◽  
Dieter Schollaert ◽  
...  

Sex steroids are critical for skeletal development and maturation during puberty as well as skeletal maintenance during adult life. However, the exact time during puberty when sex steroids have the highest impact as well as the ability of bone to recover from transient sex steroid deficiency is unclear. Surgical castration is a common technique to study sex steroid effects in rodents, but it is irreversible, invasive, and associated with metabolic and behavioral alterations. Here, we used a low dose (LD) or a high dose (HD) of gonadotropin-releasing hormone antagonist to either temporarily or persistently suppress sex steroid action in male mice, respectively. The LD group, a model for delayed puberty, did not show changes in linear growth or body composition, but displayed reduced trabecular bone volume during puberty, which fully caught up at adult age. In contrast, the HD group, representing complete pubertal suppression, showed a phenotype reminiscent of that observed in surgically castrated rodents. Indeed, HD animals exhibited severely impaired cortical and trabecular bone acquisition, decreased body weight and lean mass, and increased fat mass. In conclusion, we developed a rodent model of chemical castration, which can be used as an alternative to surgical castration. Moreover, the transient nature of the intervention enables to study the effects of delayed puberty and reversibility of sex steroid deficiency.


Author(s):  
S. Karkare ◽  
J. Gilloteaux ◽  
T. R. Kelly

Approximately 1 million people in the United States alone develop gallstones each year. The incidence is higher in women than in men and the ratio being 4 ≥ 1. A correlation has also been suggested between oral contraceptives and cholelithiasis. In addition, postmenopausal or cancer estrogen therapy has been reported to be a factor responsible for gallstone formation. Female sex hormone receptors have been detected not only in the gallbladder musculature, but also in its epithelium. As a follow up to experiments effectuated in the male and the ovariectomized Syrian hamster, this report shows that, a combination of a low cholesterol diet with female sex steroid treatment contributes to the formation of gallstone-like deposits, while modifying the surface epithelium morphology. Syrian hamsters (F1B strain, BioBreeders, Watertown MA) were housed under 12h light: 12 h dark cycle, at 20 °C, fed Purina chow and water ad libitum. Several duration/treatment groups were studied, but this report will focus on data obtained with the group injected weekly with estradiol valerate (E weekly, s.c. 8-10 μg/100 g.b.w., in corn oil) and with i.m. medroxyprogesterone acetate (DepoProvera Upjohn Co., Kalamazoo, MI; 8-10 mg/100 g.b.w.) for a 3-month period. Other parameters (blood and bile) were also studied but not reported here.


2013 ◽  
Author(s):  
Mary Matthews ◽  
Andrew Zannettino ◽  
Stephen Fitter ◽  
Sally Martin
Keyword(s):  

2015 ◽  
Author(s):  
Harriet Buckley ◽  
Stephanie Borg ◽  
Kirsty Nicholson ◽  
Mark Kinch ◽  
David Hughes ◽  
...  

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