#兇手不只一個
阿茲海默症惡化😰?中研院找到 #蛋白質幫兇!
👵👴👵👴
#阿茲海默症 是最常見的 #老年失智症。過去,科學認為阿茲海默症起因於:🧠大腦中的2種蛋白質錯誤堆疊:
1⃣:蛋白質Aβ(Amyloid-β)
2⃣:Tau蛋白(Tau Protein)
最近,中研院基因體研究中心 #陳韻如研究團隊 證實,導致阿茲海默症病情惡化,還有另一個💢蛋白質幫凶:
3⃣:蛋白質TDP-43
👉本研究證實:大腦 #蛋白質TDP-43 錯誤表現後,會與 #Aβ 作用,產生更有毒的中間產物,造成阿茲海默症病情惡化!
👩🔬陳韻如表示,「我們發現TDP-43在阿茲海默症裡扮演多重的角色:一方面會直接與Aβ反應誘發Aβ寡聚體形成,造成 #神經突觸功能障礙,以及記憶受損;另一方面TDP-43也會增加 #腦部發炎反應,讓患者對於空間的記憶能力降低。」
🌎全球約5,000萬名失智症患者中,有將近六、七成都是阿茲海默症病人。發病後會 #記憶力下降、#喪失語言功能、#空間感退化 #常迷路,造成自己及親友的生活負擔。但目前還沒有有效的治療藥物。
📍本研究有助於掌握更多阿茲海默症的發病特徵及機制,未來,可望透過TDP-43,為神經退化疾病尋找🔍診斷及💊治療的新方法!
📍本研究起始於兩位博士後研究學者施耀翔與杜玲嫻博士,並由張婷宇碩士加入團隊協力完成。研究成果已於今(2020)年11月23日發表於《#自然通訊》(Nature Communications)。
—
Curbing #TDP-43 May Ease the #Alzheimer’s Disease Progression
Neurodegenerative diseases are making more impacts socially and economically as human life expectancy gets higher and higher. The scientific world still doesn’t have many clues regarding these diseases. Dr. Yun-Ru (Ruby) Chen’s research has been circled around the protein TDP-43 and its role in several neuro-degenerative diseases, in a paper published in the journal Nature Communications, they have reported a new insight into how TDP-43 is affecting Alzheimer’s disease.
The team designed and made several antibodies, they will look into a solution in finding a best antibody that can do a preempt act to interact with TDP-43. If less inflammation can be managed, less memory loss of AD patients could be feasible. A synergistic effect to disrupt TDP-43 and Aβ interaction may also ameliorate AD.
—
📍新聞稿:https://www.sinica.edu.tw/ch/news/6721
📍Press Release: https://www.sinica.edu.tw/en/news/6721
📍論文全文:https://www.nature.com/articles/s41467-020-19786-7
—
#中研院基因體研究中心
#陳韻如副研究員
#神經退化疾病
neurodegenerative diseases 在 Focus Taiwan Facebook 的最讚貼文
Taiwan's National Health Research Institutes (NHRI) has successfully cultivated key components from stem cells that hold the potential for treatment of neurodegenerative diseases.
https://focustaiwan.tw/sci-tech/202007130024
neurodegenerative diseases 在 小小藥罐子 Facebook 的最佳貼文
【保健知多D】薑黃素=???
近月武漢肺炎肆虐香港,藥罐子相信大家時刻都已經勤洗手和戴口罩防疫。
除此之外,其實不論有沒有武漢肺炎,大家都應該提升免疫力,打造一個健康的身體。
過往很多人平常都可能會選擇攝取維生素C(Vitamin C)補充劑提高抵抗力。
不過除此之外,其實還有薑黃素(Curcumin)提升免疫力。
好,簡單介紹一下薑黃素:
首先顧名思義,薑黃素主要源自薑黃(Turmeric)。
至於薑黃的莖既可食用,又可藥用;既可以拿來做咖哩,在阿育吠陀(Ayurveda)這門源自印度的醫學裡,一般相信又可以拿來改善消化、紓緩關節炎(Arthritis)。
實際上,薑黃裡面的薑黃素有抗菌、抗病毒、抗真菌的功能[1],例如抗藥性金黃葡萄球菌(Methicillin-Resistant Staphylococcus Aureus, MRSA)[2]、幽門螺旋桿菌(Helicobacter pylori, H. pylori)[3]、單純疱疹一型病毒(Herpes Simplex Virus Type 1, HSV-1)[4],在相當程度上,間接提升免疫力。
除此之外,薑黃素還能夠調節人體的免疫系統並阻斷發炎組織的環氧化酶-2(Cyclo-oxygenase-2, COX-2)的形成[5],發揮抗發炎的功能,從而有可能抑制關節炎。[6]
過往有研究曾經比較薑黃與Ibuprofen這種非類固醇消炎止痛藥(Non-steroidal Anti-inflammatory Drugs, NSAIDs)在膝部退化性關節炎(Knee Osteoarthritis)的效果與安全性並顯示兩者看來在效果與安全性上沒有明顯差異。[7]
同時薑黃素還是一種抗氧化劑(Antioxidant)[8],主要用來KO體內的自由基(Free Radicals),理論上,能夠預防癌症。[9]
除此之外,薑黃素還能夠增加黏液素(Mucin)分泌[10],或許能夠保護胃壁,達到健胃的功效,實際上,有研究指出薑黃素能夠紓緩消化不良(Dyspepsia)的症狀。[11]
在副作用上,薑黃被美國食品藥物管理局(U.S. Food and Drug Administration, FDA)列為「一般安全(Generally Recognized As Safe, GRAS)」,而且一般相信薑黃素較沒有毒性[12][13],常見的副作用主要是胃痛,問題一般不大。
話雖如此,不過有證據顯示不論是攝取高劑量薑黃還是長期攝取薑黃,兩者都可能會影響肝功能[14][15],所以未必適合肝功能不佳人士,例如肝病。
#提升免疫力 #消炎殺毒 #補薑夠薑 #保護自己 #做多一步 #夠薑抗逆 #健康隨傳隨到 #薑黃素
💊💊💊💊💊💊💊
BLOG➡️http://pegashadraymak.blogspot.com/
IG➡️https://www.instagram.com/pegashadraymak/
YT➡️https://www.youtube.com/channel/UCQOMojMd6q7XnESMWwldPhQ
📕📕📕📕📕📕📕
著作➡️藥事知多D、用藥知多D、藥房事件簿、家居用藥攻略(各大書店有售)
Reference:
1. Moghadamtousi SZ, Kadir HA, Hassandarvish P, Tajik H, Abubakar S, Zandi K. A review on antibacterial, antiviral, and antifungal activity of curcumin. Biomed Res Int. 2014;2014:186864.
2. Mun SH, Joung DK, Kim YS, Kang OH, Kim SB, Seo YS, et al. Synergistic antibacterial effect of curcumin against methicillin-resistant Staphylococcus aureus. Phytother Res. 2013;19:599-604.
3. De R, Kundu P, Swarnakar S, Ramamurthy T, Chowdhury A, Nair GB, et al. Antimicrobial activity of curcumin against Helicobacter pylori isolates from India and during infections in mice. Antimicrob Agents Chemother. 2009;53:1592-7.
4. Zandi K, Ramedani E, Mohammadi K, Tajbakhsh S, Deilami I, Rastian Z, et al. Evaluation of antiviral activities of curcumin derivatives against HSV-1 in Vero cell line. Nat Prod Commun. 2010;5:1935-8.
5. Aggarwal BB, Harikumar KB. Potential therapeutic effects of curcumin, the anti-inflammatory agent, against neurodegenerative, cardiovascular, pulmonary, metabolic, autoimmune and neoplastic diseases. Int J Biochem Cell Biol. 2009;41:40-59.
6. Srimal RC, Dhawan BN. Pharmacology of diferuloyl methane (curcumin), a non-steroidal anti-inflammatory agent. J Pharm Pharmacol. 1973;25:447–52.
7. Kuptniratsaikul V, Thanakhumtorn S, Chinswangwatanakul P, Wattanamongkonsil L, Thamlikitkul V. Efficacy and safety of Curcuma domestica extracts in patients with knee osteoarthritis. J Altern Complement Med. 2009;15(8):891-897.
8. Sreejayan N, Rao MNA. Free radical scavenging activity of curcuminoids. Arzneimittelforschung. 1996;46:169-171.
9. Shukla PK, Khanna VK, Khan MY, Srimal RC. Protective effect of curcumin against lead neurotoxicity in rat. Hum Exp Toxicol. 2003;22:653-8.
10. Lee CJ, Lee JH, Seok JH, Hur GM, Park YC, Seol IC, et al. Effects of baicalein, berberine, curcumin and hesperidin on mucin release from airway goblet cells. Planta Med. 2003;69:523-6.
11. Thamlikitkul V, Bunyapraphatsara N, Dechatiwongse T, et al. Randomized double blind study of Curcuma domestica Val . for dyspepsia. J Med Assoc Thai. 1989;72:613-620.
12. Ammon HPT, Wahl MA. Pharmacology of Curcuma longa . Planta Med. 1991;57:1-7.
13. Shankar TNB, Shantha NV, Ramesh HP, et al. Toxicity studies on turmeric (Cucurma longa): acute toxicity studies in rats, guinea pigs and monkeys. Indian J Exp Biol. 1980;18:73-75.
14. Deshpande S, et al. Subchronic oral toxicity of turmeric and ethanolic turmeric extract in female mice and rats. Toxicology Letters. 1998;95:183-193.
15. Kandarkar SV, Sawant SS, Ingle AD, et al. Subchronic oral hepatotoxicity of turmeric in mice--histopathological and ultrastructural studies. Indian J Exp Biol. 1998;36:675-679.
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