NEWS HIGHLIGHTS
Published Studies Related to Methyltestosterone
Safety and efficacy of low-dose esterified estrogens and methyltestosterone, alone or combined, for the treatment of hot flashes in menopausal women: a randomized, double-blind, placebo-controlled study. [2011.01]
This study evaluated safety and efficacy of esterified estrogens and methyltestosterone administered alone or in combination for the treatment of hot flashes in menopausal women. The 0.30-mg esterified estrogens and 0.30-mg methyltestosterone combination was the lowest effective dose, and our results are consistent with the known safety profile of estrogen and androgen combination products.
Effects of methyltestosterone on immunity against Salmonella Pullorum in dwarf chicks. [2009.12]
This study was conducted to determine effects of methyltestosterone on innate immunity and adaptive immunity against Salmonella Pullorum in dwarf chicks. In vivo experiment, comparisons of pathological sections, viable counts of bacteria, specific antibody levels, and subsets of T lymphocytes were set forth between chicks with or without 10(-7) M methyltestosterone treatment (2 d of age through 21 d of age) and challenged with 5 x 10(8) virulent Salmonella Pullorum (7 d of age), and in vitro experiment, phagocytic and killing abilities, reactive oxygen intermediate production, and reactive nitrogen intermediate production of monocytes-macrophages treated with high (10(-8) M/10(6) cell) or physiological (10(-14) M/10(6) cell) concentration of methyltestosterone were examined after Salmonella Pullorum infection...
Efficacy of hormone therapy with and without methyltestosterone augmentation of venlafaxine in the treatment of postmenopausal depression: a double-blind controlled pilot study. [2006.03]
OBJECTIVE: This study evaluated the augmentation of venlafaxine with hormone therapy in the treatment of postmenopausal depression. The hormones evaluated were estrogen (0.625 mg) in combination with medroxyprogesterone acetate (2.5 mg) and methyltestosterone (2.5 mg)... CONCLUSIONS: Methyltestosterone 2.5 mg had the highest effect size compared with placebo, but the high dropout rate prevented its efficacy from being determined. Estrogen plus medroxyprogesterone, combined with methyltestosterone or otherwise, demonstrated a trend toward increased efficacy of venlafaxine. Further larger-scale clinical trials are needed to elucidate the findings of this pilot study.
Combined esterified estrogens and methyltestosterone versus esterified estrogens alone in the treatment of loss of sexual interest in surgically menopausal women. [2005.07]
OBJECTIVE: To compare the effect of esterified estrogens and methyltestosterone versus esterified estrogens alone on diminished sexual interest in surgically menopausal women... CONCLUSIONS: The mixed results seen with the different sexual function questionnaires may be due to the CSFQ-F-C's lack of specificity for this population. Increased levels of bioavailable and free testosterone paralleled the improved MSIQ item scores. Both the EE and EE/MT treatments were well tolerated.
Combined esterified estrogen and methyltestosterone treatment for dry eye syndrome in postmenopausal women. [2005.06]
PURPOSE: To determine whether systemic replacement with combined esterified estrogen (EE) and methyltestosterone (MT) (EE + MT) would reduce symptoms and promote clinical improvement in postmenopausal women with dry eye syndrome (DES). DESIGN: Retrospective, noncomparative, interventional case series... CONCLUSIONS: Treatment with EE + MT may be efficacious for DES of various etiologies. A randomized placebo-controlled trial is planned to further evaluate these encouraging findings.
Clinical Trials Related to Methyltestosterone
A Study of Fortigel Testosterone Gel 2% in Males With Low Testosterone [Active, not recruiting]
Low testosterone is a condition that occurs when the body is unable to produce sufficient
quantities of testosterone. The medical name for low testosterone is hypogonadism.
Hypogonadism can be caused by many factors. Symptoms include: decrease in libido, lack of
energy and mood swings. The goal of testosterone replacement therapy is to return
testosterone levels to the normal range and relieve symptoms.
The purpose of this study is to evaluate the ability of Fortigel testosterone gel 2% to
maintain serum (blood) testosterone levels within the normal range in hypogonadal men aged 18
to 75 years. This will be determined by blood sampling at specified times during the study.
The study is also intended to evaluate the tolerability of Fortigel, which will be applied to
the skin each day throughout the study period.
Exogenous Testosterone Plus Dutasteride for the Treatment of Castrate Metastatic Prostate Cancer [Recruiting]
Usually, the male hormone testosterone makes prostate cancer cells grow. Lowering
testosterone usually stops the growth of prostate cancer. However, after a period of time
without testosterone, prostate cancer cells learn to grow again.
You are able to join this trial because your prostate cancer is growing even though you have
very low levels of testosterone. Studies have shown that high doses of testosterone, in this
situation, can cause prostate cancer cells to stop growing.
The investigators did a study several years ago in which the investigators gave high doses
of testosterone to patients such as yourself. The investigators showed that giving
testosterone in this situation was safe. The investigators also showed that the
investigators could, in some cases, make the PSA go down using high-dose testosterone.
The investigators believe that they can improve this type of treatment by combining
testosterone with another drug called dutasteride. Dutasteride is another type of hormone.
It should make testosterone levels rise. The investigators believe that combination of
dutasteride and testosterone will be more a more powerful regimen against your cancer than
testosterone alone.
Effect of Androgel on Type 2 Diabetic Males With Hypogonadism [Recruiting]
This is to study the effect of replacing testosterone on different inflammatory cells in
type 2 diabetics with low testosterone levels.
Influence of Administration Route of Testosterone on Male Fertility [Not yet recruiting]
Exogenously administered testosterone will override the normal negative feedback of
endogenous testosterone on the hypothalamus and pituitary. Constantly, relatively high and
constant testosterone levels will cause a drop in FSH and LH production by the pituitary.
Since FSH and LH are signalling hormones to the testes, endogenous testosterone production
and spermatogenesis will be down-regulated. It is expected that intranasal dosing in the
morning will mimic the normal physiological pattern of testosterone production thereby
avoiding negative side-effects on spermatogenesis. Trans-dermal gels give testosterone
levels more or less constant over the day and will very likely have inhibitory effects on
spermatogenesis.
The main objective of this study is to show that twice daily intranasal dosing does not
have, or has a smaller inhibitory effect on spermatogenesis in comparison to transdermal
testosterone gels.
Oral Androgens in Man-4: (Short Title: Oral T-4) [Completed]
The protocol was designed to address the hypothesis that oral testosterone enanthate plus
dutasteride can suppress the secretion of LH and FSH after four weeks of administration. In
addition, we will compare the gonadotropin suppression mediated by a dose of testosterone
enanthate (400 mg twice daily) that would be expected to maintain the serum testosterone in
the normal range throughout the day, with the same dose (800 mg once daily) administered once
daily. This larger once-daily dose is expected to result in a higher peak and lower trough
by the end of the dosing interval
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