scholarly journals NOT ONLY ESTRADIOL BUT ALSO TESTOSTERONE LEVELS DEPEND ON MENSTRUAL CYCLE PHASES

2019 ◽  
Vol 6 (3) ◽  
Author(s):  
L. Popova ◽  
I. Vasylyeva ◽  
A. Tkachenko ◽  
H. Polikarpova ◽  
Umut Kökbaş ◽  
...  

Abstract. MENSTRUAL CYCLE-RELATED CHANGES IN BLOOD SERUM TESTOSTERONE AND ESTRADIOL LEVELS AND THEIR RATIO STABILITY IN YOUNG HEALTHY FEMALES Popova L. ., Vasylyeva L., Tkachenko A., Polikarpova H., Kökbaş U.,  Tuli A2, Kayrin L., Nakonechna A. The role of testosterone in females has not been fully elucidated. Studies usually involved postmenopausal women. Literature data on age-related changes of testosterone levels are contradictory. The application of sex hormones and their combination in medical practice increases the importance of study of the menstrual cycle fluctuations in testosterone, populational variability of testosterone and estradiol levels and their ratio in healthy females to prevent the excessive doses of sex steroids and provide the using of optimal their doses in different phases of menstrual cycle during treatment.The objective of our research was to evaluate testosterone and estradiol levels, their interrelation and their ratio in different stages of menstrual cycle in young healthy women. Twenty-two young Ukrainian females aged 18 to 22 years were enrolled in this study. Testosterone and estradiol levels in blood serum were determined by Estradiol ELISA andTestosterone ELISA kits (Italy). Both estradiol and testosterone levels depended on menstrual cycle phases. The highest testosterone level was revealed in ovulation. No correlation between blood serum testosterone and estradiol levels was found in all menstrual cycle phases. Differences in testosterone and estradiol levels between Ukrainian women and some other populations of women were noted, indicating that such differences must be taken into account when treating women of different populations. Testosterone/estradiol ratio was not changed during menstrual cycle. Because of the constancy of the ratio of testosterone to estradiol during menstrual cycle and the age-related change in  that ratio, this must be taken into account in the treatment of elderly women in order to create a testosterone-estradiol ratio that is characteristic of young women. Key words: Testosterone, estradiol, menstrual cycle phases, women.   Резюме НЕ ТІЛЬКИ РІВЕНЬ ЕСТРАДІОЛУ, АЛЕ Й ТЕСТОСТЕРОНУ ЗАЛЕЖИТЬ ВІД ФАЗИ МЕНСТРУАЛЬНОГО ЦИКЛУ Попова Л.Д., Васильєва І.М., Ткаченко А.С., Полікарпова Г.В., Кокбаш У., Туллі А., Кайрін Л., Наконечна О.А. Роль тестостерону у жінок висвітлена недостатньо. У дослідженнях зазвичай беруть участь жінки в постменопаузі. Дані літератури про вікові зміни рівня тестостерону суперечливі. Застосування статевих гормонів та їх комбінації в медичній практиці підвищує важливість вивчення коливань тестостерону в менструальному циклі, популяційної мінливості рівнів тестостерону та естрадіолу та їх співвідношення у здорових жінок для запобігання надмірних доз статевих стероїдів та забезпечення використання їх оптимальних доз в різні фази менструального циклу під час лікування. Метою нашого дослідження було оцінити рівень тестостерону та естрадіолу, їх взаємозв'язок та їх співвідношення у різні фази менструального циклу у молодих здорових жінок. До дослідження були залучені двадцять дві молоді жінки віком від 18 до 22 років. Рівні тестостерону та естрадіолу в сироватці крові визначали імуноферментним методом. Рівні естрадіолу і тестостерону залежали від фаз менструального циклу. Найвищий рівень тестостерону виявлений під час овуляції. Не було виявлено кореляції між рівнем тестостерону і естрадіолу в сироватці крові у всіх фазах менструального циклу. Відмічено відмінності в рівнях тестостерону та естрадіолу між українськими жінками та жінками деяких інших популяцій, що свідчить про те, що такі відмінності слід враховувати при лікуванні жінок різних популяцій. Співвідношення тестостерону до естрадіолу не змінювалось під час менструального циклу. Зважаючи на сталість співвідношення тестостерону до естрадіолу під час менструального циклу  та зміну цього співвідношення з віком, необхідно враховувати це при лікуванні жінок похилого віку з метою створення співвідношення тестостерону до естрадіолу, характерного для молодих жінок. Ключові слова: тестостерон, естрадіол, фази менструального циклу, жінки.   Резюме НЕ ТОЛЬКО УРОВЕНЬ ЭСТРАДИОЛА, НО И ТЕСТОСТЕРОНА ЗАВИСИТ ОТ ФАЗЫ МЕНСТРУАЛЬНОГО ЦИКЛА Попова Л.Д., Васильева И.М., Ткаченко А.С., Поликарпова А.В., Кокбаш У., Тулли А., Кайрин Л., Наконечная О.А. Роль тестостерона у женщин освещена недостаточно. В исследованиях обычно участвуют женщины в постменопаузе. Данные литературы о возрастных изменениях уровня тестостерона противоречивы.Применение половых гормонов и их комбинации в медицинской практике повышает важность изучения колебаний тестостерона в менструальном цикле, популяционной изменчивости уровней тестостерона и эстрадиола и их соотношений у здоровых женщин для предотвращения чрезмерных доз половых стероидов и обеспечения использования оптимальных доз в различные фазы менструального цикла во время лечения. Целью нашего исследования было оценить уровень тестостерона и эстрадиола, их взаимосвязь и их соотношение в разные фазы менструального цикла у молодых здоровых женщин. В исследование были включены двадцать две молодые женщины в возрасте от 18 до 22 лет. Уровни тестостерона и эстрадиола в сыворотке крови определяли иммуноферментным методом. Уровни эстрадиола и тестостерона зависели от фаз менструального цикла. Самый высокий уровень тестостерона обнаружен во время овуляции. Не было обнаружено корреляции между уровнем тестостерона и эстрадиола в сыворотке крови во всех фазах менструального цикла. Были отмечены различия в уровнях тестостерона и эстрадиола между украинскими женщинами и некоторыми другими популяциями женщин, что указывает на то, что такие различия необходимо учитывать при лечении женщин разных популяций. Соотношение тестостерона / эстрадиола не менялось во время менструального цикла. Учитывая постоянство соотношения тестостерона к эстрадиолу во время менструального цикла и изменение этого соотношения с возрастом, необходимо учитывать это при лечении пожилых женщин с целью создания соотношение тестостерона к эстрадиолу, характерного для молодых женщин. Ключевые слова: тестостерон, эстрадиол, фазы менструального цикла, женщины.

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 471-471
Author(s):  
Shehzad Basaria

Abstract Serum testosterone concentrations decrease in men with age, but benefits and risks of raising testosterone levels in older men remain controversial. In the T-Trials, a total of 790 men, age 65 and older, with a serum testosterone concentration of < 275 ng/dL and symptoms of sexual dysfunction, fatigue or physical dysfunction were randomized to either testosterone gel or placebo gel for 1 year. Treatment in the testosterone arm increased serum testosterone levels to the mid-normal range for young men. Testosterone replacement was associated with a significant increase in sexual activity (p<0.001), libido and erectile function. In contrast, there was no improvement in vitality or physical function. Adverse findings included increases in non-calcified plaque formation and a higher rate of prostate events. In sum, testosterone treatment in older men was associated with modest benefits, while the risk on prostate and cardiovascular health remain unclear.


1991 ◽  
Vol 7 (4) ◽  
pp. 261-275 ◽  
Author(s):  
E. Lee ◽  
A.N. Brady ◽  
M.J. Brabec ◽  
T. Fabel

Potential toxic effects of methanol vapors on testicular produc tion of testosterone and the morphology of testes were investi gated using normal or methanol-sensitive folate-reduced rats. Methanol inhalation at the level of the current permissible expo sure limit, 200 ppm, for up to six weeks (8 hours/day, 5 days/ week), did not reduce serum testosterone levels in normal rats. Testes isolated from methanol-exposed (200 ppm) rats had the same capability as those from air-exposed rats in synthesizing testosterone whether testes were incubated in the absence or pres ence of hCG. The testes-to-body weight ratio of rats exposed up to 800 ppm methanol for up to 13 weeks (20 hours/day, 7 days/ week) were not different from those of the air-exposed rats. Fur thermore, methanol had no adverse effect on testicular morphol ogy at the end of the 13 week exposure period at 800 ppm in either normal rats or folate-reduced methanol-sensitive rats when they were 10 months old at the time of examination. Thus, these data indicate that low level methanol may not cause an inhibi tory effect on testosterone synthesis contrary to previous litera ture reports. However, a greater incidence of testicular degeneration was noticed in the 18 month old folate-reduced rats exposed to 800 ppm for 13 weeks (20 hours/day, 7 days/week), suggesting that methanol may have a potential to accelerate the age-related degeneration of the testes.


2006 ◽  
Vol 91 (11) ◽  
pp. 4669-4675 ◽  
Author(s):  
Andrea D. Coviello ◽  
Kishore Lakshman ◽  
Norman A. Mazer ◽  
Shalender Bhasin

Abstract Background: Recently we found that testosterone levels are higher in older men than young men receiving exogenous testosterone. We hypothesized that older men have lower apparent testosterone metabolic clearance rates (aMCR-T) that contribute to higher testosterone levels. Objective: The objective of the study was to compare aMCR-T in older and young men and identify predictors of aMCR-T. Methods: Sixty-one younger (19–35 yr) and 60 older (59–75 yr) men were given a monthly GnRH agonist and weekly testosterone enanthate (TE) (25, 50, 125, 300, or 600 mg) for 5 months. Estimated aMCR-T was calculated from the amount of TE delivered weekly and trough serum testosterone concentrations, corrected for real-time absorption kinetics from the im testosterone depot. Results: Older men had lower total (316 ± 13 vs. 585 ± 26 ng/dl, P < 0.00001) and free testosterone (4 ± 0.1 vs. 6 ± 0.3 ng/dl, P < 0.00001) and higher SHBG (52 ± 3 vs. 33 ± 2 nmol/liter, P < 0.00001) than younger men at baseline. Total and free testosterones increased with TE dose and were higher in older men than young men in the 125-, 300-, and 600-mg dose groups. aMCR-T was lower in older men than young men (1390 ± 69 vs. 1821 ± 102 liter/d, P = 0.006). aMCR-T correlated negatively with age (P = 0.0007), SHBG (P = 0.046), and total testosterone during treatment (P = 0.02) and percent body fat at baseline (P = 0.01) and during treatment (P = 0.004). aMCR-T correlated positively with lean body mass at baseline (P = 0.03) and during treatment (P = 0.01). In multiple regression models, significant predictors of aMCR-T included lean body mass (P = 0.008), percent fat mass (P = 0.009), and SHBG (P = 0.001). Conclusions: Higher testosterone levels in older men receiving TE were associated with an age-related decrease in apparent testosterone metabolic clearance rates. Body composition and SHBG were significant predictors of aMCR-T.


2007 ◽  
Vol 92 (9) ◽  
pp. 3599-3603 ◽  
Author(s):  
Peter Y. Liu ◽  
Jonathan Beilin ◽  
Christian Meier ◽  
Tuan V. Nguyen ◽  
Jacqueline R. Center ◽  
...  

Abstract Background: Cross-sectional studies from different populations show a variable decline in blood testosterone concentrations as men age. Few population representative cohorts have been followed up over time. Objective: The objective of the study was to quantify longitudinally the change in serum testosterone and SHBG concentrations with age in two well-defined, representative but geographically widely separated regional Australian cohorts. Subjects and Setting: The Busselton cohort comprises individuals aged 18–90 yr residing in Western Australia assessed prospectively since 1981. Sera were assayed from 910 men, from whom further samples were available 14 yr later in 480. The Dubbo cohort involves individuals aged 61–90 yr living in Eastern Australia. Baseline sera were collected from 610 men and additional sera on a second (n = 370) and third (n = 200) occasion from 1989 to 2004. Men from both cohorts are community dwelling and of predominately European origin. Results: Longitudinal analyses show the following: 1) total testosterone declines comparably (P > 0.9) by 1.3% (Busselton) and 0.9% (Dubbo) per annum with the same rates of decline when analyses were restricted to men older than 60 yr of age; 2) annual changes in SHBG were also very similar in age-restricted analyses (2.3% vs. 2.5%, P = 0.48); and 3) the annual increase in SHBG was steeper in middle-aged and older men (P < 10−3vs. young men). These longitudinal changes were all up to 4-fold greater in magnitude, compared with cross-sectional analyses of baseline data. Conclusion: In two separate regional Australian populations, blood testosterone fell and SHBG increased comparably with age. Age-related changes in blood testosterone and SHBG previously described in urban-dwelling men are the same in men who reside in smaller regional cities of another continent.


2020 ◽  
Vol 27 (12) ◽  
pp. 1186-1191
Author(s):  
Giuseppe Grande ◽  
Domenico Milardi ◽  
Silvia Baroni ◽  
Andrea Urbani ◽  
Alfredo Pontecorvi

Male hypogonadism is “a clinical syndrome that results from failure of the testis to produce physiological concentrations of testosterone and/or a normal number of spermatozoa due to pathology at one or more levels of the hypothalamic– pituitary–testicular axis”. The diagnostic protocol of male hypogonadism includes accurate medical history, physical exam, as well as hormone assays and instrumental evaluation. Basal hormonal evaluation of serum testosterone, LH, and FSH is important in the evaluation of diseases of the hypothalamus-pituitary-testis axis. Total testosterone levels < 8 nmol/l profoundly suggest the diagnosis of hypogonadism. An inadequate androgen status is moreover possible if the total testosterone levels are 8-12 nmol/L. In this “grey zone” the diagnosis of hypogonadism is debated and the appropriateness for treating these patients with testosterone should be fostered by symptoms, although often non-specific. Up to now, no markers of androgen tissue action can be used in clinical practice. The identification of markers of androgens action might be useful in supporting diagnosis, Testosterone Replacement Treatment (TRT) and clinical follow-up. The aim of this review is to analyze the main findings of recent studies in the field of discovering putative diagnostic markers of male hypogonadism in seminal plasma by proteomic techniques. The identified proteins might represent a “molecular androtest” useful as a seminal fingerprint of male hypogonadism, for the diagnosis of patients with moderate grades of testosterone reduction and in the follow-up of testosterone replacement treatment.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Rong Lei ◽  
Yan Sun ◽  
Jiawen Liao ◽  
Yuan Yuan ◽  
Linlin Sun ◽  
...  

Abstract Background There are only a few studies on sex hormones in females of different ages suffering from depression, and their conclusions are not uniform until now. This study aimed to investigate the correlation between the severity of depression in females and factors such as sex hormones and differences in sex hormone levels in females of different ages, exploring variations after treatment. Methods A total of 169 females with depression were selected and divided into the first-episode (91 cases) and recurrent (78 cases) groups. Then, on the basis of their age, the first-episode patients were divided into the young (48 cases, age < 45 years), perimenopausal (20 cases, 45–55 years), and elderly groups (23 cases, age > 55 years); the patients with recurrent depression were classified into the young (37 cases, age < 45 years), perimenopausal (19 cases, 45–55 years), and elderly groups (22 cases, age > 55 years). The patients were assessed in accordance with the International Classification of Diseases of mental and behavioral disorders. The serum progesterone, prolactin, estradiol, and testosterone levels in the patients were measured, and differences in sex hormone levels of the groups were analyzed. Results The estradiol level was negatively correlated with age and the prolactin level was positively correlated with occupation. The severity of depression in females was found to be negatively correlated with age. The serum progesterone and estradiol levels in the young group were significantly higher than those in the elderly group, regardless of the first episode or recurrence. Estradiol levels in the perimenopausal and elderly groups with first-episode depression were significantly higher than those in the same group with recurrent depression. However, there was no significant difference in the serum progesterone, prolactin, estradiol, and testosterone levels in the recurrent group before and after treatment. Conclusions Sex hormone levels, especially estradiol, varied among females of different ages suffering from depression. Recurrent depression also has a certain effect on sex hormone levels in females. Not only should the age and relapse be considered when studying the sex hormone levels of females with depression, but also attention should be paid to whether the patients have used antidepressants before their sexual hormonal testing.


Biomolecules ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 409
Author(s):  
Dhruba Tara Maharjan ◽  
Ali Alamdar Shah Syed ◽  
Guan Ning Lin ◽  
Weihai Ying

Testosterone’s role in female depression is not well understood, with studies reporting conflicting results. Here, we use meta-analytical and Mendelian randomization techniques to determine whether serum testosterone levels differ between depressed and healthy women and whether such a relationship is casual. Our meta-analysis shows a significant association between absolute serum testosterone levels and female depression, which remains true for the premenopausal group while achieving borderline significance in the postmenopausal group. The results from our Mendelian randomization analysis failed to show any causal relationship between testosterone and depression. Our results show that women with depression do indeed display significantly different serum levels of testosterone. However, the directions of the effect of this relationship are conflicting and may be due to menopausal status. Since our Mendelian randomization analysis was insignificant, the difference in testosterone levels between healthy and depressed women is most likely a manifestation of the disease itself. Further studies could be carried out to leverage this newfound insight into better diagnostic capabilities culminating in early intervention in female depression.


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