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PT-141とは何ですか?
PT-141, also called bremelanotide, is sometimes referred to as the female Viagra because the peptide was previously investigated in phase IIb human clinical trials for use in treating female hypoactive sexual desire disorder (HSDD). PT-141 is a melanocortin that binds primarily to melanocortin 4 receptor (MC-4R) and MC-1R. In 2009, PT-141 was also investigated as a treatment for acute hemorrhage. PT-141 is a derivative of another synthetic melanocortin, melanotan 2 (MT-2).
PT-141は、MC-4Rを刺激するという点でユニークなペプチドです。これは、中枢神経系で性的覚醒を生成し、性的行動に影響を与えることが知られています。[1], [2]。マウスの研究では、MC-4Rへのアゴニストの結合が性的興奮を引き起こし、男性と女性の両方で交尾を増加させることが示されています。[3], [4]. Because PT-141 works via a different mechanism than drugs like Viagra, it is possible to treat sexual arousal disorders in both men and women that stem from causes other than reduced blood flow to the genitals.
A study of men with erectile dysfunction (ED) who did not respond to sildenafil (Viagra) found that roughly one third experienced adequate erection for sexual intercourse with PT-141 (administered via nasal spray). There was also a strong dose-dependent response in the trial, indicating that PT-141 is indeed effective in certain cases[]。これは、PT-141がシルデナフィルが失敗した設定でEDの修正に関する洞察を提供し、低活性の性的欲求の中心的な原因についての洞察を提供できることを示唆しています。
Duration of penile base rigidity greater than 60% for placebo compared to various doses of PT-141.
Source: 自然
興味深いことに、PT-141は、HSDDに苦しむ女性での使用の承認に達する前に、臨床試験から引き出されました。これは、薬物が1か月あたりの満足のいく性的出来事の数を増やし、実質的な副作用なしに統計的に有意な方法で女性の性的苦痛スコアを減らす兆候にもかかわらずです[6]。女性の性機能障害(FSD)を治療する多くの専門家は、肯定的な結果にもかかわらず、ペプチドが進行していないことに失望しました。彼らは、FSDの試験のための確立されたエンドポイントと、女性の性的健康に対する社会文化的バイアスの欠如を指摘しています。[7]. They hope that greater attention will be given to the topic and that the FDA will establish more concrete guidelines for evaluating therapies like PT-141 that can offer benefit. These experts also expressed dismay that the pharmacological treatments were not tested in conjunction with other established means of treating sexual dysfunction as they believe that the combination may prove synergistic and that peptides like PT-141 may be useful for overcoming initial barriers and jump-starting psychological treatment modalities.
In 2017, partly in response to the outcry against the cessation of earlier trials, Phase II Reconnect trials were launched using subcutaneous injections of PT-141 for FSD. The newest version of PT-141, called Rekynda, may soon be available for use in the United States. It would be legal to use PT-141 off-label, at that point, to treat both male and female sexual dysfunction[8]。これらの新しい試験は、FSDの専門家がこれらの種類の治療を承認するのを見るのに有益であると宣伝されている種類の修正エンドポイントに依存しています。
Right now, PT-141 has received widespread and intense attention as a treatment for sexual dysfunction. There is, however, a great deal of potential research outside of sexual dysfunction and hemorrhage that PT-141 could be applied to. For instance, MC-4R is well-known to be defective or missing in certain cases of obesity and may account for as much as 6% of all cases of early-onset obesity. PT-141 offers a unique means of exploring this particular cause of obesity and potentially illustrating a pathway for intervention. MC-1R plays roles in both pain and inflammation as well as kidney pathology and the spread of infection. There is a plethora of available research that PT-141 could help to shed light on.
PT-141 exhibits minimal side effects, low oral and excellent subcutaneous bioavailability in mice. Per kg dosage in mice does not scale to humans. PT-141 for sale at
The above literature was researched, edited and organized by Dr. Logan, M.D. Dr. Logan holds a doctorate degree from Case Western Reserve University School of Medicine and a B.S. in molecular biology.
Scientific Journalの著者
シェリルA.キングスバーグ博士 is the chief of behavioral medicine at University Hospitals Case Medical Center and professor in Reproductive Biology and Psychiatry at Case Western Reserve University. Her areas of clinical specialization include sexual medicine, female sexual disorders, cognitive behavioral psychotherapy, menopause, pregnancy and postpartum mood disorders, psychological aspects of infertility, and psychological and sexual aspects of cancer. Dr. Kingsberg’s primary research interests are in treatments for female sexual disorders and the psychological aspects of infertility and menopause. She led a ランダム化されたプラセボ対照用量発見試験 for PT-141. She has numerous publications in many national and international journals, sits on the editorial board of Menopause and has authored numerous chapters on topics including perimenopause and sexuality, oocyte donation, infertility and aging, the treatment of psychogenic erectile dysfunction and sexuality after cancer. キングスバーグ博士 received her PhD from the University of South Florida in Tampa and completed her fellowship in sexual medicine at University Hospitals Case Medical Center. She is an active member in a number of national and international organizations including the American Psychological Association and the American Society for Reproductive Medicine. She currently sits on the Board of Trustees of The North American Menopause Society, and serves as the current treasurer of the Society for Assisted Reproductive Technologies. Dr. Kingsberg s a past president of The International Society for the Study of Women’s Sexual Health.
Dr. Sheryl A. Kingsberg is being referenced as one of the leading scientists involved in the research and development of PT-141. In no way is this doctor/scientist endorsing or advocating the purchase, sale, or use of this product for any reason. There is no affiliation or relationship, implied or otherwise, between
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このウェブサイトで提供される製品は、ビトロ内の研究のためにのみ提供されています。 in-vitro研究(ラテン語:ガラス)は体の外側で行われます。これらの製品は薬や薬ではなく、病状、病気、病気を予防、治療、治療するためにFDAによって承認されていません。あらゆる種類の人間や動物への身体導入は、法律によって厳密に禁じられています。