Mesterolone

Mesterolone
Clinical data
Trade namesProviron, others
Other namesNSC-75054; SH-60723; SH-723; 1α-Methyl-4,5α-dihydrotestosterone; 1α-Methyl-DHT; 1α-Methyl-5α-androstan-17β-ol-3-one
AHFS/Drugs.comInternational Drug Names
Routes of
administration
By mouth
Drug classAndrogen; Anabolic steroid
ATC code
Legal status
Legal status
Pharmacokinetic data
Bioavailability3%
Protein binding98% (40% to Albumin, 58% to SHBG)
MetabolismLiver
Elimination half-life12-13 hours
ExcretionUrine
Identifiers
  • (1S,5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-1,10,13-trimethyl-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-one
CAS Number
PubChem CID
ChemSpider
UNII
KEGG
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard100.014.397 Edit this at Wikidata
Chemical and physical data
FormulaC20H32O2
Molar mass304.474 g·mol−1
3D model (JSmol)
  • O=C4C[C@@H]3CC[C@@H]2[C@H](CC[C@]1(C)[C@@H](O)CC[C@H]12)[C@@]3(C)[C@@H](C)C4
  • InChI=1S/C20H32O2/c1-12-10-14(21)11-13-4-5-15-16-6-7-18(22)19(16,2)9-8-17(15)20(12,13)3/h12-13,15-18,22H,4-11H2,1-3H3/t12-,13-,15-,16-,17-,18-,19-,20-/m0/s1 checkY
  • Key:UXYRZJKIQKRJCF-TZPFWLJSSA-N checkY
 ☒NcheckY (what is this?)  (verify)

Mesterolone, sold under the brand name Proviron among others, is an androgen and anabolic steroid (AAS) medication which is used mainly in the treatment of low testosterone levels.[2][3] It has also been used to treat male infertility, although this use is controversial.[2][4][5] It is taken by mouth.[2]

Side effects of mesterolone include symptoms of masculinization like acne, scalp hair loss, increased body hair growth, voice changes, and increased sexual desire.[2] It has no risk of liver damage.[2][3] The drug is a synthetic androgen and anabolic steroid and hence is an agonist of the androgen receptor (AR), the biological target of androgens like testosterone and dihydrotestosterone (DHT).[2][6] It has strong androgenic effects and weak anabolic effects, which make it useful for producing masculinization.[2] The drug has no estrogenic effects.[2][3]

Mesterolone was first described by 1966[7] and introduced for medical use by 1967.[8][9] In addition to its medical use, mesterolone has been used to improve physique and performance, although it is not commonly used for such purposes due to its weak anabolic effects.[2] The drug is a controlled substance in many countries and so non-medical use is generally illicit.[2][10]

Medical uses

Mesterolone is used in the treatment of androgen deficiency in male hypogonadism, anemia, and to support male fertility among other indications.[2][11][12] It has also been used to treat delayed puberty in boys.[13] Because it lacks estrogenic effects, mesterolone may be indicated for treating cases of androgen deficiency in which breast tenderness or gynecomastia is also present.[14] The drug is described as a relatively weak androgen with partial activity and is rarely used for the purpose of androgen replacement therapy, but is still widely used in medicine.[2][12][15][3]

Mesterolone is used in androgen replacement therapy at a dosage of 50 to 100 mg 2 to 3 times per day.[16]

Androgen replacement therapy formulations and dosages used in men
Route Medication Major brand names Form Dosage
Oral Testosteronea Tablet 400–800 mg/day (in divided doses)
Testosterone undecanoate Andriol, Jatenzo Capsule 40–80 mg/2–4x day (with meals)
Methyltestosteroneb Android, Metandren, Testred Tablet 10–50 mg/day
Fluoxymesteroneb Halotestin, Ora-Testryl, Ultandren Tablet 5–20 mg/day
Metandienoneb Dianabol Tablet 5–15 mg/day
Mesteroloneb Proviron Tablet 25–150 mg/day
Sublingual Testosteroneb Testoral Tablet 5–10 mg 1–4x/day
Methyltestosteroneb Metandren, Oreton Methyl Tablet 10–30 mg/day
Buccal Testosterone Striant Tablet 30 mg 2x/day
Methyltestosteroneb Metandren, Oreton Methyl Tablet 5–25 mg/day
Transdermal Testosterone AndroGel, Testim, TestoGel Gel 25–125 mg/day
Androderm, AndroPatch, TestoPatch Non-scrotal patch 2.5–15 mg/day
Testoderm Scrotal patch 4–6 mg/day
Axiron Axillary solution 30–120 mg/day
Androstanolone (DHT) Andractim Gel 100–250 mg/day
Rectal Testosterone Rektandron, Testosteronb Suppository 40 mg 2–3x/day
Injection (IMTooltip intramuscular injection or SCTooltip subcutaneous injection) Testosterone Andronaq, Sterotate, Virosterone Aqueous suspension 10–50 mg 2–3x/week
Testosterone propionateb Testoviron Oil solution 10–50 mg 2–3x/week
Testosterone enanthate Delatestryl Oil solution 50–250 mg 1x/1–4 weeks
Xyosted Auto-injector 50–100 mg 1x/week
Testosterone cypionate Depo-Testosterone Oil solution 50–250 mg 1x/1–4 weeks
Testosterone isobutyrate Agovirin Depot Aqueous suspension 50–100 mg 1x/1–2 weeks
Testosterone phenylacetateb Perandren, Androject Oil solution 50–200 mg 1x/3–5 weeks
Mixed testosterone esters Sustanon 100, Sustanon 250 Oil solution 50–250 mg 1x/2–4 weeks
Testosterone undecanoate Aveed, Nebido Oil solution 750–1,000 mg 1x/10–14 weeks
Testosterone buciclatea Aqueous suspension 600–1,000 mg 1x/12–20 weeks
Implant Testosterone Testopel Pellet 150–1,200 mg/3–6 months
Notes: Men produce about 3 to 11 mg testosterone per day (mean 7 mg/day in young men). Footnotes: a = Never marketed. b = No longer used and/or no longer marketed. Sources: See template.

Non-medical uses

Mesterolone has been used for physique- and performance-enhancing purposes by competitive athletes, bodybuilders, and powerlifters.[2]

Side effects

Side effects of mesterolone include virilization among others.[2]

Pharmacology

Pharmacodynamics

Like other AAS, mesterolone is an agonist of the androgen receptor (AR).[2] Mesterolone is described as a very poor anabolic agent due to inactivation by 3α-hydroxysteroid dehydrogenase (3α-HSD) in skeletal muscle tissue, similarly to DHT and mestanolone (17α-methyl-DHT).[2] In contrast, testosterone is a very poor substrate for 3α-HSD, and so is not similarly inactivated in skeletal muscle.[2] Because of its lack of potentiation by 5α-reductase in "androgenic" tissues and its inactivation by 3α-HSD in skeletal muscle, mesterolone is relatively low in both its androgenic potency and its anabolic potency.[2] However, it does still show a greater ratio of anabolic activity to androgenic activity relative to testosterone.[2]

Mesterolone is not a substrate for 5α-reductase, as it is already 5α-reduced, and hence is not potentiated in so-called "androgenic" tissues such as the skin, hair follicles, and prostate gland.[2]

Mesterolone is not a substrate for aromatase, and so cannot be converted into an estrogen.[2] As such, it has no propensity for producing estrogenic side effects such as gynecomastia and fluid retention.[2] It also has no progestogenic activity.[2]

Because mesterolone is not 17α-alkylated, it has little or no potential for hepatotoxicity.[2] However, its risk of deleterious effects on the cardiovascular system is comparable to that of several other oral AAS.[2]

Pharmacokinetics

The C1α methyl group of mesterolone inhibits its hepatic metabolism and thereby confers significant oral activity, although its oral bioavailability is still much lower than that of 17α-alkylated AAS.[2] In any case, mesterolone is one of the few non-17α-alkylated AAS that is active with oral ingestion.[2] Uniquely among AAS, mesterolone has very high affinity for human serum sex hormone-binding globulin (SHBG), about 440% that of DHT in one study and 82% of that of DHT in another study.[17][2][18] As a result, it may displace endogenous testosterone from SHBG and thereby increase free testosterone concentrations, which may in part be involved in its effects.[2]

Chemistry

Mesterolone, also known as 1α-methyl-4,5α-dihydrotestosterone (1α-methyl-DHT) or as 1α-methyl-5α-androstan-17β-ol-3-one, is a synthetic androstane steroid and derivative of DHT.[19][20][2] It is specifically DHT with a methyl group at the C1α position.[19][20][2] Closely related AAS include metenolone and its esters metenolone acetate and metenolone enanthate.[19][20][2] The antiandrogen rosterolone (17α-propylmesterolone) is also closely related to mesterolone.[21]

History

Mesterolone was developed in the 1960s[22] and was first described by 1966.[7][23][24][25] It was introduced for medical use by Schering under the brand name Proviron by 1967.[8][9] The well-established brand name Proviron had previously been used by Schering for testosterone propionate starting in 1936.[26] Following the introduction of mesterolone as Proviron, Schering continued to market testosterone propionate under the brand name Testoviron.[26] A number of sources incorrectly state that mesterolone was synthesized or introduced for medical use in 1934.[22][2][27][28]

Society and culture

Generic names

Mesterolone is the generic name of the drug and its INNTooltip International Nonproprietary Name, USANTooltip United States Adopted Name, BANTooltip British Approved Name, and DCITTooltip Denominazione Comune Italiana, while mestérolone is its DCFTooltip Dénomination Commune Française.[19][20][29][30]

Brand names

Mesterolone is marketed mainly under the brand name Proviron.[19][20][30][2]

Availability

Mesterolone is available widely throughout the world, including in the United Kingdom, Australia, and South Africa, as well as many non-English-speaking countries.[20][30] It is not available in the United States, Canada, or New Zealand.[20][30] The drug has never been marketed in the United States.[27]

Mesterolone, along with other AAS, is a schedule III controlled substance in the United States under the Controlled Substances Act and a schedule IV controlled substance in Canada under the Controlled Drugs and Substances Act.[10][31]

Research

In one small scale clinical trial of depressed patients, an improvement of symptoms which included anxiety, lack of drive and desire was observed.[32] In patients with dysthymia, unipolar, and bipolar depression significant improvement was observed.[32] In this series of studies, mesterolone lead to a significant decrease in luteinizing hormone and testosterone levels.[32] In another study, 100 mg mesterolone cipionate was administered twice monthly.[33] With regards to plasma testosterone levels, there was no difference between the treated versus untreated group, and baseline luteinizing hormone levels were minimally affected.[33]

References

  1. ^ Anvisa (2023-03-31). "RDC Nº 784 - Listas de Substâncias Entorpecentes, Psicotrópicas, Precursoras e Outras sob Controle Especial" [Collegiate Board Resolution No. 784 - Lists of Narcotic, Psychotropic, Precursor, and Other Substances under Special Control] (in Brazilian Portuguese). Diário Oficial da União (published 2023-04-04). Archived from the original on 2023-08-03. Retrieved 2023-08-15.
  2. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah Llewellyn W (2011). Anabolics. Molecular Nutrition Llc. pp. 641–. ISBN 978-0-9828280-1-4.
  3. ^ a b c d Nieschlag E, Behre HM (1 April 2004). Testosterone: Action, Deficiency, Substitution. Cambridge University Press. pp. 411–. ISBN 978-1-139-45221-2.
  4. ^ Hargreave TB (6 December 2012). Male Infertility. Springer Science & Business Media. pp. 398–399. ISBN 978-1-4471-1029-3.
  5. ^ Lipshultz LI, Howards SS, Niederberger CS (24 September 2009). Infertility in the Male. Cambridge University Press. pp. 445–446. ISBN 978-0-521-87289-8.
  6. ^ Kicman AT (June 2008). "Pharmacology of anabolic steroids". British Journal of Pharmacology. 154 (3): 502–521. doi:10.1038/bjp.2008.165. PMC 2439524. PMID 18500378.
  7. ^ a b Behre HM, Wang C, Handelsman DJ, Nieschlag E (2004). "Pharmacology of testosterone preparations". Testosterone. Cambridge University Press. pp. 405–444. doi:10.1017/CBO9780511545221.015. ISBN 9780521833806.
  8. ^ a b Rausch-Stroomann JG, Petry R, Hienz HA (1967). "The influence of mesterolone on testicular function". Research on Steroids. 3. Pergamon: 181–184.
  9. ^ a b Tausk M (1968). "Practically Applicable Results of Twenty Years of Research in Endocrinology". Progress in Drug Research / Fortschritte der Arzneimittelforschung / Progrès des recherches pharmaceutiques. Vol. 12. pp. 137–164. doi:10.1007/978-3-0348-7065-8_3. ISBN 978-3-0348-7067-2. PMID 4307936. {{cite book}}: |journal= ignored (help)
  10. ^ a b Karch SB (21 December 2006). Drug Abuse Handbook, Second Edition. CRC Press. pp. 30–. ISBN 978-1-4200-0346-8.
  11. ^ Allahbadia GN, Das RB (12 November 2004). The Art and Science of Assisted Reproductive Techniques. CRC Press. pp. 824–. ISBN 978-0-203-64051-7.
  12. ^ a b Becker KL (2001). Principles and Practice of Endocrinology and Metabolism. Lippincott Williams & Wilkins. pp. 1186–. ISBN 978-0-7817-1750-2.
  13. ^ Hart I, Newton RW (6 December 2012). Endocrinology. Springer Science & Business Media. pp. 119–. ISBN 978-94-010-9298-2.
  14. ^ Corona G, Rastrelli G, Vignozzi L, Maggi M (June 2012). "Emerging medication for the treatment of male hypogonadism". Expert Opinion on Emerging Drugs. 17 (2): 239–259. doi:10.1517/14728214.2012.683411. PMID 22612692. S2CID 22068249.
  15. ^ Nieschlag E, Behre HM, Bouchard P, Corrales JJ, Jones TH, Stalla GK, et al. (2004). "Testosterone replacement therapy: current trends and future directions". Human Reproduction Update. 10 (5): 409–419. doi:10.1093/humupd/dmh035. PMID 15297434.
  16. ^ Rastrelli G, Reisman Y, Ferri S, Prontera O, Sforza A, Maggi M, Corona G (2019). "Testosterone Replacement Therapy". Sexual Medicine. Springer. pp. 79–93. doi:10.1007/978-981-13-1226-7_8. ISBN 978-981-13-1225-0.
  17. ^ Saartok T, Dahlberg E, Gustafsson JA (June 1984). "Relative binding affinity of anabolic-androgenic steroids: comparison of the binding to the androgen receptors in skeletal muscle and in prostate, as well as to sex hormone-binding globulin". Endocrinology. 114 (6): 2100–2106. doi:10.1210/endo-114-6-2100. PMID 6539197.
  18. ^ Pugeat MM, Dunn JF, Nisula BC (July 1981). "Transport of steroid hormones: interaction of 70 drugs with testosterone-binding globulin and corticosteroid-binding globulin in human plasma". The Journal of Clinical Endocrinology and Metabolism. 53 (1): 69–75. doi:10.1210/jcem-53-1-69. PMID 7195405.
  19. ^ a b c d e Elks J (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 775–. ISBN 978-1-4757-2085-3.
  20. ^ a b c d e f g Index Nominum 2000: International Drug Directory. Taylor & Francis. 2000. pp. 656–. ISBN 978-3-88763-075-1.
  21. ^ Brooks JR, Primka RL, Berman C, Krupa DA, Reynolds GF, Rasmusson GH (August 1991). "Topical anti-androgenicity of a new 4-azasteroid in the hamster". Steroids. 56 (8): 428–433. doi:10.1016/0039-128x(91)90031-p. PMID 1788861. S2CID 21500107.
  22. ^ a b Carruthers M (2006). Androgen Deficiency in the Adult Male: Causes, Diagnosis and Treatment. CRC Press. pp. 137–178. ISBN 978-0-367-80018-5.
  23. ^ Neumann F, Wiechert R, Kramer M, Raspé G (April 1966). "[Experimental animal studies with a new androgen--mesterolone (1-alpha-methyl-5-alpha-androstan-17-beta-ol-one)]". Arzneimittel-Forschung (in German). 16 (4): 455–458. PMID 6014248.
  24. ^ Laschet U, Niermann H, Laschet L, Paarmann HF (1967). "Mesterolone, a potent oral active androgen without gonadotropin inhibition". Acta Endocrinologica. 56 (1_Suppl): S55. doi:10.1530/acta.0.056S055. ISSN 0804-4643.
  25. ^ Tausk M (1968). "Practically Applicable Results of Twenty Years of Research in Endocrinology". Progress in Drug Research / Fortschritte der Arzneimittelforschung / Progrès des recherches pharmaceutiques. Vol. 12. pp. 137–164. doi:10.1007/978-3-0348-7065-8_3. ISBN 978-3-0348-7067-2. PMID 4307936. {{cite book}}: |journal= ignored (help)
  26. ^ a b Nieschlag E, Nieschlag S (2017). "The History of Testosterone and The Testes: From Antiquity to Modern Times". Testosterone. Springer. pp. 1–19. doi:10.1007/978-3-319-46086-4_1. ISBN 978-3-319-46084-0.
  27. ^ a b Hohl A (6 April 2017). Testosterone: From Basic to Clinical Aspects. Springer. pp. 204–. ISBN 978-3-319-46086-4.
  28. ^ Kalinchenko S, Tyuzikov I, Mskhalaya G, Tishova Y (2017). "Testosterone Therapy: Oral Androgens". Testosterone. Springer. pp. 203–224. doi:10.1007/978-3-319-46086-4_10. ISBN 978-3-319-46084-0.
  29. ^ Morton IK, Hall JM (6 December 2012). Concise Dictionary of Pharmacological Agents: Properties and Synonyms. Springer Science & Business Media. pp. 176–177. ISBN 978-94-011-4439-1.
  30. ^ a b c d "Mesterolone".
  31. ^ Lilley LL, Snyder JS, Collins SR (5 August 2016). Pharmacology for Canadian Health Care Practice. Elsevier Health Sciences. pp. 50–. ISBN 978-1-77172-066-3.
  32. ^ a b c Itil TM, Michael ST, Shapiro DM, Itil KZ (June 1984). "The effects of mesterolone, a male sex hormone in depressed patients (a double blind controlled study)". Methods and Findings in Experimental and Clinical Pharmacology. 6 (6): 331–337. PMID 6431212.
  33. ^ a b Kövary PM, Lenau H, Niermann H, Zierden E, Wagner H (May 1977). "Testosterone levels and gonadotrophins in Klinefelter's patients treated with injections of mesterolone cipionate". Archives for Dermatological Research. 258 (3): 289–294. doi:10.1007/bf00561132. PMID 883846. S2CID 1222130.

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Village in Lincolnshire, England Human settlement in EnglandDeeping Saint NicholasDeeping St Nicholas churchDeeping Saint NicholasLocation within LincolnshirePopulation1,961 (2011)[1]OS grid referenceTF215160Civil parishDeeping St NicholasDistrictSouth HollandShire countyLincolnshireRegionEast MidlandsCountryEnglandSovereign stateUnited KingdomPost townSPALDINGPostcode districtPE11Dialling code01775PoliceLincolnshireFireLincolnshireAmbulanceEast Midland…

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Keuskupan Ikot EkpeneDioecesis IkotekpenensisKatolik LokasiNegara NigeriaProvinsi gerejawiCalabarKoordinat5°11′0″N 7°43′0″E / 5.18333°N 7.71667°E / 5.18333; 7.71667StatistikLuas2.263 km2 (874 sq mi)Populasi- Total- Katolik(per 2004)908.02898,552 (10.9%)InformasiDenominasiKatolik RomaRitusRitus LatinPendirian1 Maret 1963KatedralKatedral Santa Anna di Ikot EkpeneKonkatedralPro-Katedral Santo Yohanes di AbakKepemimpinan kin…

埼玉県の行政機関埼玉県教育委員会役職教育長 高田直芳概要所在地 埼玉県さいたま市浦和区高砂3-15-1定員 教育長及び5人の委員ウェブサイト 埼玉県教育委員会テンプレートを表示 埼玉県教育委員会(さいたまけんきょういくいいんかい)は、埼玉県の教育委員会である。さいたま市浦和区に本部を置く。 概要 埼玉県内の教育に関する事務を所掌する行政委員会であり、…

Tanaman sukulen memiliki batang atau daun yang menebal, seperti lidah buaya. Tumbuhan sukulen, juga dikenal sebagai sukulen, adalah tumbuhan dengan organ yang menebal, berdaging, dan membengkak, biasanya untuk menyimpan air di iklim atau kondisi tanah kering. Karakter ini tidak digunakan secara ilmiah untuk mendefinisikan famili dan genus tumbuhan karena sering kali hanya akurat pada tingkat spesies tunggal. Kata sukulen berasal dari kata Latin sucus, yang berarti 'jus', atau 'getah'.[1]…

Canadian civilian honour for merit Order of New BrunswickOrdre du Nouveau Brunswick Awarded by the lieutenant governor of New BrunswickTypeProvincial orderFoundedDecember 2000EligibilityAny Canadian citizen presently or formerly resident in New Brunswick, save for politicians and judges while still in office.Awarded forExcellence, achievement, and outstanding contribution to the social, cultural, or economic well-being of New Brunswick and its residents.StatusCurrently constitutedFounderMarilyn …