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PubMed2006

Value of basal serum cortisol to detect corticosteroid-induced adrenal insufficiency in elite cyclists.

The frequent use of glucocorticoids by athletes necessitates testing for adrenal insufficiency because of the risk of death in cases of associated severe stress (trauma, infection). During the 2001 and 2002 sporting seasons, we assessed the value of measuring baseline serum cortisol concentrations and the frequency of corticosteroid use during compulsory medical tests carried out by the French Cycling Federation on 659 elite cyclists (585 men and 74 women); the risk of adrenal insufficiency is negatively correlated with the basal serum cortisol level. Adrenal insufficiency was suspected in 34 cyclists (5.2%; 22 in 2001 and 12 in 2002) on the basis of below normal cortisol concentrations and in three cyclists (in 2001) because they had received corticosteroid treatment. In 2001, 10 of the 25 cyclists convoked underwent baseline follow-up serum cortisol determinations and 15 underwent dynamic exploration of adrenal function with the short ACTH test. Adrenal function was found to be deficient in four of these cyclists, at the limits of the normal range in four and normal in seven. Based on these results, the FFC sent a questionnaire in 2002 to all the cyclists to assess the use of corticosteroid in this population. This survey revealed that 85 of 538 cyclists (15.8%) had received corticosteroid treatment in the previous 3 months. Moreover, 11 of the 12 cyclists (92%) with low basal serum cortisol concentrations had received corticosteroid therapy. These results show that basal serum cortisol is relevant to detect adrenal insufficiency in sportsmen, in particular in cases of values below the normal range. The high frequency of corticosteroid use among elite cyclists, and in particular road cyclists who are at risk of trauma and infection, justifies screening tests to detect adrenal insufficiency.

Adrenal Cortex Function Tests↗
PubMed1998

[Rapid ACTH test to judge recovery of adrenal function in patients with Cushing's syndrome].

BACKGROUND: Steroid hormone replacement and recovery of adrenal function after unilateral adrenalectomy were studied in 12 patients with Cushing's syndrome due to adenocortical adenoma. PATIENTS AND METHOD: The patients were 3 males and 9 females aged 19 to 61 years old (mean 34.3 years old). Recovery of adrenal function was judged by plasma cortisol level and rapid ACTH test peridocally. RESULTS: Plasma cortisol level was 13.7 to 20.8 micrograms/dl without diurnal rythme before adrenalectomy. Average replacement period with low dose hydrocortisone was 15 +/- 9.2 months after adrenalectomy. Plasma ACTH and cortisol concentration was recovered to normal range after 3.4 +/- 2.9 months and 12.2 +/- 8.2 after adrenalectomy, respectively. Plasma ACTH concentration was recovered to normal range earlier than plasma cortisol level in all patients. Sufficient response of plasma cortisol concentration in rapid ACTH test was seen a little later than recovery of plasma cortisol level. CONCLUSION: Present data suggest that it is insufficient to judge recovery of adrenal function only by the rise of plasma ACTH and/or cortisol concentrations. Therefore rapid ACTH test is useful to judge sufficient recovery of adrenal function during and after steroid hormone replacement.

Adenoma↗
PubMed2002

Androgen-secreting adrenal adenomas.

BACKGROUND: The androgen source in women with hirsutism and signs of virilism may be the ovary or adrenal gland. CASES: Three patients with androgen excess are reported. Two had hyperandrogenemia and Cushing syndrome with an adrenal mass greater than 5.5 cm; the third had a small adrenal adenoma secreting only testosterone and responsive to human chorionic gonadotropin. In all cases, the pathologic report from surgery and the long-term resolution of symptoms confirmed the benign nature of the tumors. CONCLUSION: Basal and dynamic hormonal tests cannot precisely differentiate ovarian from adrenal tumors. Adrenal adenomas must be considered as a cause of hyperandrogenic syndrome.

Adrenal Cortex Function Tests↗
PubMed1985

Adrenal function in acute severe asthma.

Adrenocortical function was assessed by the intravenous short synacthen test in 22 control subjects and 68 patients admitted to hospital with acute severe asthma. The cortisol increment was subnormal in 19 of the 68 asthmatics. This included 11 of the 14 patients on continuous oral steroids, seven of the 29 patients who had had occasional courses of oral steroids, one of the seven on inhaled steroids only, and none of the 18 who had had no steroids. Adrenal suppression was greatest in those patients taking oral steroids in divided daily doses. Nineteen of 43 patients were on or had taken oral steroids in this fashion. Of those 19 patients with low cortisol increments only one half had received supplementary steroids in the 24 hours preceding admission. Based on the synacthen test, serum DHEA-SO4 values were not a good discriminant of adrenocortical function. Adrenal insufficiency may be an important cause of death in acute severe asthma in New Zealand.

Acute Disease↗
PubMed1976

Plasma adrenocorticosteroid levels in protein and energy restricted pigs.

Pigs (Yorkshire) were subjected to protein-energy malnutrition in the following manner: 3- or 4-week-old pigs from control dams were fed a control diet (18% protein), an energy-restricted diet (18% protein), or a low protein diet (6% and 3% protein) for 8 weeks. Energy restriction was achieved by feeding the control diet in amounts that allowed some growth, but only to an extent equal to the low protein diet being matched. After the restriction period, all pigs were fed the control diet for another 8 weeks. Blood samples were collected at intervals from the superior vena cava. Plasma samples were analyzed for corticosteroids in all groups and for free cortisol in the controls and 3% protein groups. No significant differences were found for total plasma corticosteroids among all groups. Free cortisol was found significantly higher in the 3% group compared to the controls. An ACTH test was performed with depleted and recovered pigs of the 3% protein group and controls. No differences were found among controls, depleted and recovered pigs.

Adrenal Cortex↗
PubMed1983

Effects of long term inhaled high dose beclomethasone dipropionate on adrenal function.

Studies of adrenal function were performed on 54 asthmatic patients who were taking long term high doses of inhaled beclomethasone dipropionate ranging from 500 to 2000 micrograms/day for between six and 60 months. Of the 43 patients taking up to 1500 micrograms/day, 39 (91%) had normal basal plasma cortisol concentrations and normal short tetracosactrin responses and 24 hour urinary free cortisol excretion was within the normal range in eight of nine patients tested. Some evidence of adrenal suppression was found in patients taking 2000 micrograms/day, with basal plasma cortisol below the normal range in four out of 11 patients and 24 hour urinary free cortisol excretion below the normal range in five out of six patients tested. Only one of the 11 patients taking 2000 micrograms/day had a short tetracosactrin response below the normal range: the mean rise in plasma cortisol was, however, significantly lower in this group than in those taking 1000 micrograms/day (328 (SE 30) and 506 (34) nmol/l respectively) (p less than 0.01). Patients taking more than 1500 micrograms/day of inhaled beclomethasone may require systemic corticosteroids during prolonged stress.

Adolescent↗
PubMedDate not supplied

[Characteristics of the adrenal endocrine function of Papio hamadryas in the metopyrone test].

Hormonal function of the adrenals of preadolescent and adult monkeys (Papio hamadryas) was examined by the metopyrone test. After a single injection of metopyrone the content of cortisol, 11-deoxycortisol, progesterone, pregnenolone, 17-hydroxyprogesterone and 17-hydroxypregnenolone was measured in the blood of monkeys by radioimmunoassay. The reasons for age-associated differences in the hormonal response of the primate adrenals to metopyrone injection are discussed. The conclusion is drawn on the advisability of a single metopyrone injection for studying functional reserves of the pituitary-adrenal system.

Adrenal Cortex Function Tests↗
PubMed1993

Clinical experience of incidentally discovered adrenal tumor with particular reference to cortical function.

We reviewed 14 male and 9 female patients with adrenal tumor discovered incidentally by imaging studies in an attempt to assess adrenal function, mainly cortical function. Pathological diagnosis consisted of cortical adenoma in 12 patients, cortical nodular hyperplasia in 2, medullary hyperplasia in 1, cavernous hemangioma in 1, metastatic tumor in 4 and cyst in 2. Another adrenal cyst was diagnosed by percutaneous puncture. In all patients peripheral levels of plasma cortisol and aldosterone were normal. Plasma catecholamine levels were also normal except for 1 patient with medullary hyperplasia who had equivocal elevation. Among the patients with cortical adenoma and hyperplasia, however, 5 of 10 (50%) had excessive excretion of 24-hour urinary 17-hydroxycorticosteroids, 4 of 13 (31%) had a loss of plasma cortisol circadian rhythm and 7 of 14 (50%) had insufficient suppression on the dexamethasone test. Furthermore all patients had an increased ipsilateral uptake that was not suppressed after dexamethasone on 131iodine-adosterol scintigraphy, while a diminished contralateral uptake was noted in 5 of 15 (33%). Postoperatively, hypertension decreased to normal in 2 of 3 patients and impaired glucose tolerance was improved in 1 of 2. Two patients with cortical adenoma who exhibited a loss of plasma cortisol circadian rhythm experienced postoperative adrenal insufficiency. These data indicate that a considerable number of incidentally discovered adrenal tumors are not nonfunctioning particularly in reference to glucocorticoid secretion, and adrenalectomy seems to be beneficial in some of those patients with hypertension or impaired glucose tolerance.

17-Hydroxycorticosteroids↗
PubMed1990

[Clinical experience of adrenal incidentaloma with particular reference to adrenal cortical function].

The adrenal function mainly cortical one, was evaluated in 16 patients with incidentally discovered adrenal masses. Pathological examination was possible in 15 cases. The finding consisted of adrenocortical adenoma in 9, adrenocortical nodular hyperplasia in 1, adrenal medullary hyperplasia in 1, metastatic tumor in 2 and adrenal cyst in 2. Another case of adrenal cyst was diagnosed by percutaneous puncture. In all cases peripheral levels of plasma cortisol, plasma aldosterone concentration and plasma renin activity were normal. Plasma catecholamine levels were also normal except in a case of adrenal medullary hyperplasia. On the other hand, the cases of adrenocortical adenoma displayed elevation of urinary 17-hydroxycorticosteroids in 6/9 (67%), a loss of plasma cortisol circadian rhythm in 3/7 (43%) and insufficient suppression on dexamethasone (DXM) suppression test in 6/9 (67%). Their adrenal scintigraphy (with 131I-6 beta-iodomethyl-9-nor-cholest-5 (10)-en-3 beta-ol) revealed an increased ipsilateral up-take and insufficient suppression after DXM in all, while a diminished contralateral up-take in 4/9 (44%). These data suggested that a considerable number of adrenal incidentalomas may not be truly "non-functioning". Two patients with cortical adenoma experienced post operative adrenal insufficiency (25%). It was suggested that a pre-operative loss of plasma cortisol circadian rhythm was the most prognosticating of the post operative adrenal insufficiency, rather than insufficient DXM suppression or scintigraphic absence of contralateral up-take. Among the patients with malignancy, differentiation of incidental adrenal adenoma from metastasis by size alone may not be reliable.

Adenoma↗
PubMed1999

Progesterone secreting adrenal mass in a cat with clinical signs of hyperadrenocorticism.

A 7-year-old 7-kg (16-lb) neutered male Himalayan cat had nonpruritic progressive alopecia of 9 months' duration. The cat had hyperglycemia and glucosuria. Physical examination revealed complete alopecia along the abdomen, inguinal area, medial and caudal areas of the thighs, ventral area of the thorax, and axilla. Clinical signs were consistent with endocrine-induced alopecia and hyperadrenocorticism, however, results of diagnostic tests (ACTH stimulation and low-dose dexamethasone suppression) were not supportive of hyperadrenocorticism. Abdominal ultrasonography revealed a mass cranial to the left kidney. Blood samples were obtained before and after ACTH stimulation to measure sex hormone concentrations. Analysis revealed markedly high blood progesterone concentrations before and after ACTH stimulation. An adrenalectomy was performed and histologic examination of the mass revealed a well-differentiated adrenocortical carcinoma. The right adrenal gland could not be viewed during surgery and was assumed to be atrophic. Following surgery, the hyperglycemia and glucosuria resolved. Within 4 months of surgery, the hyperprogesteronemia had resolved, and at 12 months the cat's coat quality appeared normal. Findings suggest that cats with signs of hyperadrenocorticism should be evaluated not only for abnormal cortisol concentrations, but also for sex hormone abnormalities.

Adrenal Cortex Function Tests↗
PubMed1992

Conservative and surgical management of incidentally discovered adrenal tumors (incidentalomas).

Of 50 patients with incidentalomas (INC), 18 were adrenalectomized and in 18 patients the INC was left in place. For 14 patients clinical data were insufficient for evaluation. Follow-up investigation of the 18 unoperated subjects 11-101 months (median 32.2) after the diagnosis had been made revealed unchanged size of the INC [initially 2.1 +/- 0.8 cm (mean +/- SD) at follow-up 2.0 +/- 1.0 cm]. Cushing's syndrome developed in one patient, which was not evident at the initial discovery of the INC 32 months before. "Pre-Cushing's Syndrome" was detected in 1 patient and confirmed in a second who had displayed a pathologically high dose dexamethasone suppression test 101 months before. In addition, 3 male patients with a hitherto unknown mild subclinical defect of 21-hydroxylase activity were identified. The remaining 12 patients had normal endocrine activity of their adrenals. Eighteen patients were adrenalectomized with an average tumor size of 3.96 +/- 1.88 cm. Histologically, 10 (52%) adenomas were observed, including 3 with signs of hypercortisolism. Adrenal hyperplasias were observed in 2 patients, metastasis in 1 patient. 31.5% of the INC which were removed were nonmalignant tumors of other than adrenal origin. We conclude that initially endocrinologically inactive adrenal tumors can eventually develop autonomous endocrine activity and therefore need to be reexamined at regular intervals. Conservative management with regular follow-up investigations is the preferable treatment for small incidentalomas when endocrine over-activity has been excluded and no indications of malignancy exist. Based on these observations and the literature a diagnostic and therapeutic strategy is presented.

Adrenal Cortex Function Tests↗
PubMed1992

Menopause related changes of adrenocortical steroid production.

To elucidate changes of adrenocortical steroid production with age, reproductive age (n = 14), peri-menopausal (n = 12) and post-menopausal (n = 13) women were studied using basal hormone levels and the results of a rapid ACTH stimulation test. Peripheral serum levels of pregnenolone, 17 alpha-hydroxypregnenolone, 17 alpha-hydroxyprogesterone, dehydroepiandrosterone and androstenedione were measured by RIA. The basal levels of all steroids except pregnenolone decreased with age. A significant increase in the levels of all steroids after ACTH stimulation was observed in all subjects. Although, there was an age related decrease in the response of C19-steroids to ACTH, the response of pregnenolone and 17 alpha-hydroxyprogesterone to ACTH did not alter with age. The preserved response of 17 alpha-hydroxyprogesterone to ACTH in post-menopausal women suggests that 17 alpha-hydroxyprogesterone production plays a role in the age independency of cortisol. In the present paper, the changes in the capacity of the post-menopausal adrenal cortex to produce androgens and C21-steroids were demonstrated.

17-alpha-Hydroxypregnenolone↗
PubMed1995

'Exaggerated adrenarche' in children presenting with premature adrenarche.

OBJECTIVE: Previous reports of endocrinological profiles in children presenting with premature adrenarche have not shown consistent abnormalities. We therefore aimed to review the clinical and biochemical aspects of a large number of patients presenting with premature adrenarche without virilization and determine the relation between clinical and biochemical characteristics and the frequency of adrenal steroid disorders. DESIGN AND PATIENTS: Eighty-eight patients presenting with adrenarche without virilization during 1985-1992 were retrospectively reviewed. There were 72 girls and 16 boys. All were normotensive and had either prepubertal breasts or testes < 4 ml. In patients with high adrenal androgen levels, adrenal tumours had been excluded by either adrenal ultrasound or CT scan. MEASUREMENT: We recorded clinical manifestations, auxological data, bone age, biochemical results including basal 17OH-progesterone (b17OHP), dehydroepiandrosterone sulphate (DHEAS), androstenedione (delta 4A), testosterone, cortisol and stimulated 17OHP and cortisol. ACTH stimulation tests (using soluble Synacthen 250 micrograms intramuscularly and collecting blood at 0, 30 and 60 minutes) were performed when clinically indicated. 17OH-Pregnenolone (17OHPreg) was also measured during ACTH stimulation tests in 13 individuals to look for abnormalities of 3 beta-hydroxysteroid dehydrogenase (3 beta-HSD). RESULTS: The age of onset ranged from 3 to 9.5 years (mean 6.8 +/- 1.3). There were no significant differences by sex for height SDS, weight SDS or % ideal body weight, but bone age advancement was greater in males (P < 0.02). The most common presenting clinical manifestation was premature appearance of pubic hair in 93.8%, the other 6.2% presenting with body odour, acne and/or hirsutism. Twelve patients had b17OHP > 6 nmol/l of whom 5 were diagnosed as having congenital adrenal hyperplasia (CAH) resulting from 21-hydroxylase deficiency after ACTH stimulation tests. A further 33 patients who had b17OHP < 6 nmol/l had normal 17OHP and cortisol responses to ACTH stimulation. Patients, after excluding those with CAH, were divided on the basis of their DHEAS levels into prepubertal (< 1.5 mumol/l), pubertal (1.5-6 mumol/l) and above pubertal range (> 6 mumol/l). The 8 patients with DHEAS values above the pubertal range were described as having 'exaggerated adrenarche'. There were no significant clinical differences between these 3 groups, but significant differences were found for bone age advancement and the steroids, b17OHP, delta 4A and testosterone. There was a strong correlation between DHEAS and delta 4A (r = 0.623, P < 0.001). The 'exaggerated adrenarche' group had higher 17 OHPreg/17OHP ratios at 60 minutes after stimulation but these were not diagnostic for 3 beta-HSD deficiency. CONCLUSION: The value of assessing basal steroids in children presenting with premature adrenarche is demonstrated in this series with 5.7% being diagnosed with 21-hydroxylase deficiency and 9.1% with 'exaggerated adrenarche'. No relation was found between adrenal steroids and clinical features except for the acceleration of bone age. The relation between 'exaggerated adrenarche' and future ovarian hyperandrogenism needs further evaluation.

17-alpha-Hydroxypregnenolone↗
PubMed1993

Remission of subclinical adrenocortical failure in subjects with adrenal autoantibodies.

Idiopathic Addison's disease is a chronic organ-specific autoimmune disorder with a long subclinical period characterized only by the presence of adrenal autoantibodies (AA) with or without adrenal function failure. The aim of this longitudinal study was to evaluate the behavior of AA using, an indirect fluorescence method, and adrenal function in 20 AA-positive and 50 AA-negative patients screened by an investigation of a large population of organ-specific autoimmune disease patients without clinical Addison's disease. As controls, 100 normal age-matched subjects were tested only once. In the 20 AA-positive and 50 negative patients, AA and adrenal functional tests were evaluated every 4 months for 5 yr. The AA-positive patients were grouped into 5 adrenal functional stages, specifically: stage 0, normal adrenal function; stage 1, high PRA and low (or normal) aldosterone levels alone; stage 2, along with impaired cortisol response to ACTH, stage 3, along with increased ACTH levels; and stage 4, clinically overt Addison's disease. On the basis of the behavior of AA, the 20 positive patients were grouped as follows: group A, 11 patients with AA titer of 1:8 or higher at the first observation and persistently AA positive in subsequent observations, with titers ranging from 1:8 to 1:64; group B, 6 patients with initial AA titers of 1:8 or lower and AA disappearance in subsequent observations; and group C, 3 patients with AA titer of 1:32 or higher, undergoing corticosteroid therapy after the start of the study and showing AA disappearance in subsequent observations. With respect to adrenal function in group A, 2 patients initially in stage 1 and 1 patient initially in stage 2 did not progress to the upper stages, whereas 5 patients initially in stage 0 and 3 initially in stage 1 progressed subsequently to the upper stages, in 2 cases reaching overt clinical Addison's disease (stage 4). On the other hand, all of the patients of group B showed both a spontaneous disappearance of AA and recovery of adrenal function during the study span. Also, the 3 patients of group C showed disappearance of AA after corticosteroid therapy with recovery of adrenal function. None of the 50 patients who were initially AA negative became AA positive subsequently or showed impairment of adrenal function. We reached the following conclusions. 1) AA, even if present initially in some subjects without clinical Addison's disease, can subsequently disappear. 2) Restoration of adrenal function after disappearance of AA indicates that a spontaneous remission of subclinical adrenocortical failure can occur.(ABSTRACT TRUNCATED AT 400 WORDS)

Addison Disease↗
PubMed1998

Elevated post-dexamethasone suppression cortisol concentrations correlate with hormonal alterations of the hypothalamo-pituitary adrenal axis in patients with adrenal incidentalomas.

OBJECTIVE: It has recently been suggested that autonomous cortisol production may lead to subclinical glucocorticoid excess in a substantial number of patients with incidentally discovered adrenocortical adenomas. Following a standard low-dose dexamethasone suppression test (LDDST) cortisol concentrations are frequently incompletely suppressed in patients with adrenal incidentalomas, due to an ACTH-independent secretion of cortisol by the adrenal mass. Thus, post LDDST cortisol concentrations may provide a measure of the degree of autonomous glucocorticoid secretion, but hormonal alterations in relation to post-LDDST cortisol concentrations have not been thoroughly investigated. PATIENTS AND MEASUREMENTS: 61 patients with radiological features highly suggestive of adrenal adenomas were studied. These included 43 women, 18 men; mean age 59 +/- 1.4, range: 25-76 years; BMI 30.9 +/- 0.8 kg/m2 and waist:hip ratio 0.90 +/- 0.016. All subjects underwent a standard LDDST, as follows: after a 48-hr stabilisation period, 24-hr urine collections for basal urinary free cortisol (UFC) were performed. Basal serum cortisol and plasma ACTH were measured at 8 AM and at midnight the following day, and subjects started dexamethasone 0.5 mg 6 hourly for 2 days. Post-dexamethasone cortisol and ACTH levels were measured at 8 AM, 6-hrs after the last dose of dexamethasone. Blood samples for dehydroepiandrosterone sulphate (DHEAS) and serum lipids were obtained on the morning preceding dexamethasone administration. RESULTS: Post-LDDST cortisol concentrations correlated positively with the size of the adenoma (r = +0.527, P < 0.001). There was a negative rank correlation of post-LDDST cortisol concentrations and basal ACTH levels at 0900 h (rs = -0.426, P < 0.001) and DHEAS (rs = -0.380, P = 0.006). Moreover, there was a good rank correlation between DHEAS and basal ACTH levels (rs = +0.456, P < 0.001). A positive rank correlation was observed between post-LDDST cortisol concentrations and midnight cortisol concentrations (rs = +0.317, P = 0.020). As recent studies have suggested that post-LDDST cortisol levels higher than 70 nmol/l may indicate significant hypercortisolism comparisons were also performed between patients divided according to post-LDDST cortisol values into 3 groups: Group A, > 70 nmol/l (19 pts); Group B, 30-70 nmol/l (27 pts); Group C, < 30 nmol/l (15 pts). Although there was no difference in basal cortisol and UFC values between these groups, ACTH and DHEAS levels were significantly lower, and midnight cortisol significantly higher in group A compared to group C patients (P = 0.030, P = 0.017 and P = 0.001 respectively). Cholesterol and triglyceride levels were slightly albeit significantly higher in group A compared to group C patients (P < 0.05). CONCLUSIONS: It is concluded that higher post-low dose dexamethasone cortisol concentrations are associated with lower ACTH and dehydroepiandrosterone sulphate, higher midnight cortisol concentrations and larger adenomas. These findings are consistent with the hypothesis that post-low dose dexamethasone cortisol concentrations represent a useful index in assessing subtle glucocorticoid autonomy in patients with adrenal adenomas.

Adenoma↗
PubMed1987

Low plasma androgens in women with systemic lupus erythematosus.

The high ratio of women with systemic lupus erythematosus (SLE) has remained unexplained, despite the recent description of metabolic abnormalities of estrogen and androgen metabolism. Alterations of steroid metabolism in patients with SLE could be important in the pathogenesis of this disease, since it has been reported that gonadal steroids modulate the immune system. Moreover, research with inbred lupus mice has shown that estrogens have adverse effects on the disease in both sexes, whereas androgen therapy or oophorectomy is protective in females. Recently, the finding of elevated testosterone oxidation at C-17 in females with SLE suggested that plasma androgen levels in males and females with SLE should be examined more closely. We studied the varying degrees of clinical activity, with regard to plasma levels of 4 significant androgens: testosterone, androstenedione, dehydroepiandrosterone, and dehydroepiandrosterone sulfate in a series of 5 male and 42 female SLE patients. Decreased levels of all androgens were observed in women with SLE. The lowest levels of plasma androgens were found in female patients who had active disease, as determined by laboratory and clinical assessment. These data support the fact that specific abnormalities of androgen metabolism in the female are associated with SLE, and may contribute in some way to morbidity and mortality. More importantly, these data may have implications for future therapeutic regimens based on male hormone replacement.

Adolescent↗