Re: [發問] 聖約翰純路跟皮膚外用藥膏?

看板Aromatherapy作者 (0.0)時間7年前 (2017/02/21 18:56), 7年前編輯推噓8(803)
留言11則, 9人參與, 最新討論串3/3 (看更多)

02/21 13:06,
A酸存在肝臟可長達2年之久..
02/21 13:06

02/21 14:11,
驚!!!請問樓上的論點從何而來,謝謝...
02/21 14:11
A酸應該是以A醇的結構儲存在肝臟才對...=.= 找了2篇文章,一篇是文獻,一篇是書,2篇都各有引用的文獻 以下指的都是口服A酸,外用A酸似乎沒有這些困擾.. 1.Ramos-e-Silva M, Hexsel DM, Rutowitsch MS, Zechmeister M. Hydroxy acids and retinoids in cosmetics. Clin Dermatol. 2001 Jul-Aug;19(4):460-6. 463頁 Meals, particularly those with fat content, improve retinoid absorption. Because of its lipid solubility, etretinate has extensive and prolonged storage in fat resulting in a serum half life of 80–160 days. Upon discontinuing the drug, a low level may be detected in the blood for 2 years or more[1]Retinol released from the liver is carried in the circulatory system by plasma retinol-binding proteins. 從肝臟釋放出的A醇在結束口服治療2年或更久時間後,仍有少量能在血液中被檢測到。 2.T. Krieg et al. (eds.), Therapy of Skin Diseases:A Worldwide Perspective on Therapeutic Approaches and Their Molecular Basis, 2010 80頁 Women of childbearing potential who have been treated with acitretin must continue using contraception for 3 years in view of its teratogenic effects [2] . 有懷孕可能的女生在中止口服acitretin治療後,最好持續避孕3年 83頁 One major side effect of all retinoids is teratogenicity, especially in early pregnancy which can persist for up to 2 years after cessation of orally administered retinoids such as etretinate which may persist in the body for several years. 所有A酸有致畸性,在口服A酸中止後,A酸留在身體裡的時間可能長達2年,etretinate甚 至可能更久。 引用文獻: 1. Saurat JH. Systemic retinoids. What's new? Dermatol Clin. 1998 Apr;16(2):331-40. 2. van de Kerkhof PC (2006) Update on retinoid therapy of psoriasis in: an update on the use of retinoids in dermatology. Dermatol Ther 19(5):252–263 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 110.28.197.234 ※ 文章網址: https://www.ptt.cc/bbs/Aromatherapy/M.1487674594.A.644.html

02/21 19:06, , 1F
專業推
02/21 19:06, 1F

02/21 21:41, , 2F
專業推
02/21 21:41, 2F

02/21 22:15, , 3F
推,原來A酸如此可怕。
02/21 22:15, 3F

02/21 22:20, , 4F
推。A酸的致畸是指胎兒吧,所以使用口服A酸一定要避
02/21 22:20, 4F
指胎兒沒錯

02/21 22:20, , 5F
孕;但比起A酸,我覺得深海魚的重金屬累積或是作物
02/21 22:20, 5F

02/21 22:20, , 6F
農藥殘留更可怕…
02/21 22:20, 6F

02/21 22:26, , 7F
給樓上F大 所以要均衡攝取各種毒素(?)
02/21 22:26, 7F

02/21 23:42, , 8F
擦的會比吃的好嗎
02/21 23:42, 8F
擦的有皮膚屏障阻隔,經皮吸收進入身體的量較少,研究顯示和正常人一樣,但也不排除 有些人對A酸極敏感,有懷孕計劃停用是最安全的。

02/22 00:39, , 9F
口服才會存在這麼久吧?
02/22 00:39, 9F
我沒看到外用的追蹤存在體內多久的研究,不過理論上,口服存在比外用久沒錯。 補充一下,胎兒的生長和A酸有關,A酸的過量和缺乏都可能致畸,維持正常範圍是最好的 。在預定期間內停用A酸,然後平常從食物攝取胡蘿蔔素和A酯,這2樣可在體內轉成A酸, 應該就不用太擔心了。

02/22 09:55, , 10F
好專業,剛好提供給朋友參考,感謝分享
02/22 09:55, 10F
※ 編輯: antioxidant (39.12.162.212), 02/22/2017 15:33:47

02/22 19:01, , 11F
專業推,好懶得查文獻~哈哈^^"
02/22 19:01, 11F
文章代碼(AID): #1Oh1pYP4 (Aromatherapy)
文章代碼(AID): #1Oh1pYP4 (Aromatherapy)