另外網站National Library of Medicine Programs and Services也說明:Also , support for PubChem depositions using IUPAC International Identifiers ( InChis ) was added . New methodology was created for performing similarity ...
臺北醫學大學 藥學系碩士班 許明照所指導 江忠肯的 Sildenafil 速效性口溶膜與口溶錠之研發 (2021),提出PubChem關鍵因素是什麼,來自於口溶膜、口溶錠、西地那非。
而第二篇論文國立清華大學 生物資訊與結構生物研究所 楊立威所指導 艾哈邁德的 結合準確而高效的化學相似物搜尋引擎以及接觸分佈擬合法來挑選能調控新冠病毒框架轉移效率的FDA老藥以阻殺病毒 (2021),提出因為有 新型冠狀病毒、化學相似性搜索引擎的重點而找出了 PubChem的解答。
最後網站Integrated Platform of Small Molecules and Biological Activities則補充:PubChem is an open repository for experimental data identifying the biological activities of small molecules. PubChem contents include more than: 1000 ...
PubChem進入發燒排行的影片
Sildenafil 速效性口溶膜與口溶錠之研發
為了解決PubChem 的問題,作者江忠肯 這樣論述:
Sildenafil (VIAGRA®) 是最廣泛使用的勃起功能障礙藥物之一,通常使用口服的給藥方式,然而該藥物的起效時間通常需要一個小時以上,所以需要在作用前約一個小時服用。因此為了改善這類型藥物起效作用緩慢、生體可利用率低等缺點,舌下給藥系統 (sublingual drug delivery system) 近年來被廣泛開發,此外舌下給藥途徑能夠避開肝臟首渡效應代謝的風險,因而能夠有助於提高生體可利用率以及提高患者的服藥順從性。由於這些優點,本研究之目的是開發速效型sildenafil口溶膜 (Orally disintegrating film, ODF) 和口溶錠 (Orally
disintegrating tablet, ODT)。本研究分為製備sildenafil 口溶膜 (ODF) 及口溶錠 (ODT) 兩種劑型,ODF由PVP K30、PVP VA64、Lecithin S100、propylene glycol組成,將賦形劑溶解於乙醇 : 二次水 (Double Distilled Water DDW) 6:4、7:3、8:2三個比例,然後使用烘箱乾燥後製成,sildenafil citrate口溶膜 (ODF) 使其每片含有70.2 mg sildenafil citrate相當於50 mg sildenafil base,在體外溶解度試驗中,SP3LP
G、S1.5P3LPG和S2P3LPG 之sildenafil ODF在5分鐘內可釋放近90%的藥物含量,在10分鐘內完全釋放。此外,市售產品“Please® orally soluble film 50 mg”在一小時內僅釋放約60%,透過體外溶離試驗觀察到ODF處方SP3LPG、S1.5P3LPG和S2P3LPG相較於市售品有更快的溶離速率,因此我們認為ODF處方是優於市售品的。另一方面,口溶錠 (ODT) 劑型分為兩階段製程,將第一階段為制備ODF劑型,第二階段為將第一階段制備之ODF磨成細粉後與 AEROSIL® 200 、EMCOSOY® 及紐甜(Neotame),均勻混和後打成錠,
ODT處方S2V3A-01、S1.5P1.5V1.5A-01、S2P1.5V1.5A-01RU皆可在2分鐘內將藥物完全釋放,溶離速率與市售“VIAGRA® 50 mg錠劑”相似。同時已溶離曲線比度對試驗比較市售VIAGRA® 和ODT處方S2V3A-01、S1.5P1.5V1.5A-01、S2P1.5V1.5A-01的溶離曲線,其溶離相似值(f2)值均在50%以上,表示這三種配方與市售產品相似。因此,這三種ODT配方S2V3A-01、S1.5P1.5V1.5A-01、S2P1.5V1.5A-01具有相當大的發展潛力。
結合準確而高效的化學相似物搜尋引擎以及接觸分佈擬合法來挑選能調控新冠病毒框架轉移效率的FDA老藥以阻殺病毒
為了解決PubChem 的問題,作者艾哈邁德 這樣論述:
截至論文撰寫之時,世界上超過 50% 的人口已在一年內第三次接種疫苗,以抵禦由冠狀病毒(SARS-CoV2)所引起的百年以來最大的流行病。與每季均能逃避疫苗識別而不斷突變的棘蛋白相比,-1 程序性核醣體移碼 (-1 PRF) 與觸發此PRF機制的 mRNA 假結 (PK)在演化上相對保守許多,包含冠狀病毒在內的病毒屬。因此,科學家們非常感興趣的是可以開發調節PRF的藥物來干擾病毒蛋白的轉譯,進而干擾病毒的複製。儘管科學家已了解PK 的平衡結構及其在核醣體上的位置,但人們仍不清楚 PK 如何的誘導 PRF 產生以及藥物應被設計結合在 PK 中的什麼位置才能增強或減少病毒的移碼效率(FE%)。在
本論文中,我們展示了通過整合小分子對接、分子動力學(MD)模擬和少量藥物的體外篩選,來實現抗 PK 藥物的設計。我們開發了一種新方法:接觸分佈匹配,以有效及省時地找到讓FE%上升或下降的調節劑。這些調節劑是從 2000 多種 FDA 批准的藥物庫中挑選出來的,所以可以讓醫師有機會來off-label使用。接觸分佈由分析一個藥物前十名與SARS-CoV2 PK結合的低能量構型而來,此PK的結構是由冷凍電鏡解析出後,以分子動力學模擬(MD simulations)來鬆弛 (relax) 平衡。通過小分子對接的概率分佈匹配及根據雙螢光素酶測定 (DLA) 所確定現有 FE% 調節劑的證據,我們有效地
擴大了可以篩選的藥物數量。為了支持此平台,我們也開發了化學相似性搜索引擎 SmChem,找出少數可有效調控FE%的 FDA 藥物(老藥新用),並以生化和病毒抑制試驗中來驗證。我們使用此新平台僅對十種藥物進行了篩選,就發現了兩種新的 FE% 變化調節劑,並且該藥在化學結構上不同於已知的調節劑。通過使用光鑷 (OT) 在有或無FE% 調節劑的情況下進一步測試 PK 的機械穩定性和解旋力(unfolding forces)中間體的數量,我們對 PK 的構象可塑性和 PRF 效率之間的相關性提供了新的見解,主要在於FE%增加劑比FE%抑制劑更能減少解旋力中間體的生成但解旋力卻變化不大。這些結果對我們如
何能合理地設計藥物以靶向有翻譯調節功能的 RNA結構提供了一個明確的證據,並提供了一種進化上保守且及時的途徑來使用FDA 已核准的藥物以應對病毒感染。
想知道PubChem更多一定要看下面主題
PubChem的網路口碑排行榜
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#1.PubChem
PubChem is the world's largest collection of freely accessible chemical information. Search chemicals by name, molecular formula, structure, and other ... 於 pubchem.ncbi.nlm.nih.gov -
#2.PubChem - Applied Chemoinformatics - Wiley Online Library
Summary The original intent behind the development of PubChem was to provide a repository for the assay screening results funded by the ... 於 onlinelibrary.wiley.com -
#3.National Library of Medicine Programs and Services
Also , support for PubChem depositions using IUPAC International Identifiers ( InChis ) was added . New methodology was created for performing similarity ... 於 books.google.com.tw -
#4.Integrated Platform of Small Molecules and Biological Activities
PubChem is an open repository for experimental data identifying the biological activities of small molecules. PubChem contents include more than: 1000 ... 於 www.sciencedirect.com -
#5.PubChem in 2021: new data content and ... - Oxford Academic
PubChem (https://pubchem.ncbi.nlm.nih.gov) (1–4) is a public chemical database at the National Library of Medicine (NLM), an institute within ... 於 academic.oup.com -
#6.Applied Chemoinformatics: Achievements and Future Opportunities
NCBI Data Sources, https://pubchem.ncbi.nlm.nih.gov/sources/ (accessed January 2018). NCBI PubChem Standardization Service Help, ... 於 books.google.com.tw -
#7.Drotaverine - nomuwiki.com
身份标识. IUPAC名称. (ž)-1-(3,4-二乙氧基亚苄基)-6,7-二乙氧基-1,2,3,4-四氢异喹啉. CAS号. 14009-24-6. ñ. PubChem 客户编号. 於 cn.nomuwiki.com -
#8.PubChem 2019 update: improved access to chemical data
PubChem (https://pubchem.ncbi.nlm.nih.gov) is a key chemical information resource for the biomedical research community. 於 pubmed.ncbi.nlm.nih.gov -
#9.2 fma vendor
22: Computed by PubChem 2. 2 fma vendor. 2-Fluoromethamphetamine (2-FMA) is a synthetic ring-substituted fluorinated amphetamine compound that is commonly ... 於 fiersdelles.com -
#10.The data module — ASE documentation - CAMD Wiki pages
Search PubChem for the field and search input on the argument passed in returning an atoms object.Note that only one argument may be passed in at a time. 於 wiki.fysik.dtu.dk -
#11.Searching by chemical name & formula - Chemistry
PubChem. Provides information on the biological activities of small molecules, generally those with molecular weight less than 500 daltons. 於 lancaster.libguides.com -
#12.PubChem - Wikipedia
PubChem is a database of chemical molecules and their activities against biological assays. The system is maintained by the National Center for ... 於 en.wikipedia.org -
#13.American Chemical Society Citation Generator
Generate AMERICAN-CHEMICAL-SOCIETY citations in seconds. Start citing books, websites, journals, and more with the Citation Machine® ... 於 www.citationmachine.net -
#14.PubChem - Home | Facebook
PubChem is an open archive for the biological activities of substances, a part of the National... 8600 Rockville Pike, Bethesda, MD 20894. 於 www.facebook.com -
#15.IUPAC Name2PubChem - InChI Trust
This submission shows you how to create a smart spreadsheet with Google Sheets that links an IUPAC name to a chemical's PubChem landing page ... 於 www.inchi-trust.org -
#16.Molecular property links to SpringerMaterials are now in ...
More than 32000 compounds in PubChem now have links to hundreds of chemical and physical properties pertinent to chemistry, material science ... 於 go.usa.gov -
#17.PubChem in 2021: new data content and improved ... - PubMed
PubChem (https://pubchem.ncbi.nlm.nih.gov) is a popular chemical information resource that serves the scientific community as well as the ... 於 pubmed.ncbi.nlm.nih.gov -
#18.Nucleic Acids Res;49(D1): D1388-D1395, 2021 01 08.
Data from more than 100 new data sources were added to PubChem, including chemical-literature links from Thieme Chemistry, chemical and physical property links ... 於 pesquisa.bvsalud.org -
#19.Programs and Services - 第 51 頁 - Google 圖書結果
The PubChem Power User Gateway ( PUG ) is a interface that allows users to search and download dat that is not accessible to the Entrez system , such a ... 於 books.google.com.tw -
#20.PubChem Substance and Compound databases - PubMed
PubChem (https://pubchem.ncbi.nlm.nih.gov) is a public repository for information on chemical substances and their biological activities, ... 於 pubmed.ncbi.nlm.nih.gov -
#21.Pain Relief: From Analgesics to Alternative Therapies
PubChem Compound Database; CID=9852086, https://pubchem.ncbi.nlm.nih.gov/compound/9852086. − Lappaconitine: National Center for Biotechnology Information. 於 books.google.com.tw -
#22.PubChem | re3data.org
PubChem BioAssay: The PubChem BioAssay Database contains bioactivity screens of chemical substances described in PubChem Substance. It provides ... 於 www.re3data.org -
#23.MolView
PubChem Compound ID. Return. Download PNG image. Download JCAMP data. NIST source. MolView AGPL. LOADING… By closing this banner and using MolView, ... 於 molview.org -
#24.PubChem chemical structure standardization - Journal of ...
PubChem [81,82,83] is a public repository for information on chemical substances and their biological activities. It contains more than 237 ... 於 jcheminf.biomedcentral.com -
#25.PubChem - Twitter
PubChem Pathway Pages are now available. Each PubChem Pathway page provides information about chemicals, proteins, genes, and diseases involved in or associated ... 於 twitter.com -
#26.PubChem: a public information system for analyzing ...
PubChem (http://pubchem.ncbi.nlm.nih.gov) is a public repository for biological properties of small molecules hosted by the US National Institutes of Health ... 於 pubmed.ncbi.nlm.nih.gov -
#27.Using PubChem - PubMed - Guides
Pubchem is a useful tool of getting information on many substances that have a biological or pharmacological aspect. 於 libguides.library.cpp.edu -
#28.McDaniel's death ruled as accidental kratom overdose
Mitragynine is a Thai medicinal plant commonly known as kratom, according to PubChem.gov. The herbal drug has been used for decades as ... 於 www.wcluradio.com -
#29.Identification of Key Flavor Compounds in Citrus Fruits - ACS ...
... The Pherobase, PubChem, and LRI & Odor Database). Relative concentrations of target compounds were semiquantified on the basis of the ... 於 pubs.acs.org -
#30.PubChem - Databases A-Z - SWOSU Library
PubChem contains information on chemical structures, identifiers, chemical and physical properties, biological activities, patents, health, safety, toxicity ... 於 library.swosu.edu -
#31.All Press Releases - Springer Nature Group
Open access chemistry database PubChem will now include thousands of links to chemical and physical properties of materials from the. 於 group.springernature.com -
#32.PubChem | SBS - Sistema bibliotecario Sapienza
PubChem, released in 2004, provides information on the biological activities of small molecules. PubChem is organized as three linked databases within the ... 於 web.uniroma1.it -
#33.PubChem: An Information Resource for Chemical Structure
PubChem contains the chemical structures of small organic molecules and information on their biological activities. It is intended to support the Molecular ... 於 grantome.com -
#34.ChemmineR: Cheminformatics Toolkit for R - Bioconductor
... fingerprint search support using atom pair or PubChem fingerprints ... using as sample data set the first 100 compounds from this PubChem SD file (SDF): ... 於 www.bioconductor.org -
#35.Benchmarking Data Sets from PubChem BioAssay Data - MDPI
PubChem BioAssay Statistics: Assays and Compounds. As of 30 April 2020, there were 1,067,896 assays deposited on the database. The vast majority of them (99.98 ... 於 www.mdpi.com -
#36.A deep generative model enables automated structure ...
... a random sample of molecules with matching exact masses from PubChem. ... or a random molecule with a matching exact mass from PubChem. 於 www.nature.com -
#37.BRF2 COMPOUND NAME - SPEZIAL REPORTE.COM
PubChem CID. 20192670. Structure. Find Similar Structures. Molecular Formula. BrF-2. Molecular Weight. 98.90. Bromide;fluoride Beryllium fluoride | BeF2 | CID ... 於 spezial-reporte.com -
#38.Computer Applications in Drug Discovery and Development
PubChem Compound Database PubChem Compound database: The unique chemical structures extracted from the PubChem substance database are stored in PubChem ... 於 books.google.com.tw