The Effect of Computer Games on Hormonal Changes in Adolescent Boys

Background and Aim: Computer games are a kind of growing and attractive new communication technology. This has prompted researchers to study the effects of these games on users. This study aims to determine was performed the prevalence of computer game addiction and related factors in adolescent boys of Gonabad in 2018. Materials and Methods: In this cross-sectional descriptive-analytical study, 507 male students of the first-grade in Gonabad were examined by multi-stage sampling method. Data collection tools were included in two sections: Demographic Information and the Lumens Computer Games addiction questionnaire. The data were analyzed by using SPSS software (Version 19) with the help of the Chi-Esquire and Fisher's exact test. Results: The average age of the students in this study was 13.5 ±1 years. The most popular feature of computer games is a lot of excitement (42%), competitive games (29%) and the most common types of computer games were football (48.9%) and violent games (21.7%). 28.4% of students went to Game Center to play computer games. The prevalence of dependence on computer games was moderate to high (73.2%) It showed a significant relationship with the level of education of the mother (P = 0.03), playing computer games by the parents (P <0.001) and the educational level of the students (P = 0.04). Conclusion: The results showed that the highest level of dependence of students was at the intermediate level, which indicates the importance of the problem and the need for the authorities to intervene in this field. Key Words: Prevalence; Dependence; Computer Game; Student; Boy

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Decline in Bone Mass With Tenofovir Disoproxil Fumarate/Emtricitabine Is Associated With Hormonal Changes in the Absence of Renal Impairment When Used by HIV-Uninfected Adolescent Boys and Young Men for HIV Preexposure Prophylaxis

Clinical Infectious Diseases ◽

10.1093/cid/ciw765 ◽

2016 ◽

Vol 64 (3) ◽

pp. 317-325 ◽

Cited By ~ 32

Author(s):

Peter L. Havens ◽

Charles B. Stephensen ◽

Marta D. Van Loan ◽

Gertrud U. Schuster ◽

Leslie R. Woodhouse ◽

...

Keyword(s):

Renal Impairment ◽

Bone Mass ◽

Tenofovir Disoproxil Fumarate ◽

Young Men ◽

Hormonal Changes ◽

Adolescent Boys ◽

Preexposure Prophylaxis

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The lack of effect of isoflavones on high-density lipoprotein cholesterol concentrations in adolescent boys: a 6-week randomised trial

Public Health Nutrition ◽

10.1017/s1368980007000869 ◽

2008 ◽

Vol 11 (9) ◽

pp. 955-962 ◽

Cited By ~ 2

Author(s):

Terence Dwyer ◽

Kristen L Hynes ◽

Jayne L Fryer ◽

C Leigh Blizzard ◽

Fabien S Dalais

Keyword(s):

High Density Lipoprotein ◽

High Density Lipoprotein Cholesterol ◽

Controlled Trial ◽

Randomised Trial ◽

Density Lipoprotein ◽

Dietary Supplementation ◽

High Density ◽

Lipoprotein Cholesterol ◽

Hormonal Changes ◽

Adolescent Boys

AbstractBackgroundA substantial fall in high-density lipoprotein cholesterol (HDL-C) during puberty in boys, but not girls, has been reported in Western populations. The fall in boys is believed to be due to hormonal changes – androgens have been shown to be associated with lower HDL-C, whereas oestrogens are associated with higher HDL-C. The fall in HDL-C during puberty was not observed, however, in a study of Moslem boys in Israel, nor in a group of Japanese boys. A diet high in phyto-oestrogens may account for the lack of a fall in HDL-C in these populations.ObjectiveTo examine the effect of dietary supplementation with phyto-oestrogens on the HDL-C concentration of adolescent boys from a Western population. We hypothesised that dietary supplementation of 50 mg of the isoflavones daidzein and genistein would produce a 12% higher HDL-C concentration than in controls at the end of a 6-week intervention period.DesignA randomised controlled trial.SettingHellyer College in Burnie (Tasmania, Australia).SubjectsAdolescent boys (aged 16–18 years) were recruited through a letter sent to parents. A total of 132 eligible participants enrolled and five subjects withdrew from the trial.ResultsNo significant increase in HDL-C was observed in the treatment group (–0.02 mmol l–1, standard error (SE)=0.03, P = 0.53) or the placebo group (0.05 mmol l–1, SE = 0.03, P = 0.11).ConclusionsFactors other than isolated dietary isoflavones may be responsible for the lack of fall in HDL-C during puberty in Japanese and Moslem boys.

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Parathyroid gland before and after cisplatin treatment

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100128584 ◽

1987 ◽

Vol 45 ◽

pp. 860-861

Author(s):

S.K. Aggarwal ◽

J.M. Fadool

Keyword(s):

Parathyroid Gland ◽

Wistar Rats ◽

Antitumor Agent ◽

The Body ◽

Cross Linking ◽

Limiting Factor ◽

Hormonal Changes ◽

Primary Mechanism ◽

Before And After ◽

Dna Strands

Cisplatin (CDDP) a potent antitumor agent suffers from severe toxic side effects with nephrotoxicity being the major dose-limiting factor, The primary mechanism of its action has been proposed to be through its cross-linking DNA strands. It has also been shown to inactivate various transport enzymes and induce hypocalcemia and hypomagnesemia that may be the underlying cause for some of its toxicities. The present is an effort to study its influence on the parathyroid gland for any hormonal changes that control calcium levels in the body.Male Swiss Wistar rats (Crl: (WI) BR) weighing 200-300 g and of 60 days in age were injected (ip) with cisplatin (7mg/kg in normal saline). The controls received saline injections only. The animals were injected (iv) with calcium (0.5 ml of 10% calcium gluconate/day) and were killed by decapitation on day 1 through 5. Trunk blood was collected in heparinized tubes.

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