Severity: Warning
Message: file_get_contents(https://...@pubfacts.com&api_key=b8daa3ad693db53b1410957c26c9a51b4908&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
Filename: helpers/my_audit_helper.php
Line Number: 176
Backtrace:
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 176
Function: file_get_contents
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 250
Function: simplexml_load_file_from_url
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3122
Function: getPubMedXML
File: /var/www/html/application/controllers/Detail.php
Line: 575
Function: pubMedSearch_Global
File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword
File: /var/www/html/index.php
Line: 316
Function: require_once
In our continuous search for cytotoxic compounds from the genus chromatographic separation of the MeOH/CHCl (1:1) extract of yielded one new alkamide; 4-(isoprenyloxy)-3-methoxy-3,4-deoxymethylenedioxyfagaramide () and a known one; fagaramide (). Similarly, from the MeOH/CHCl (1:1) extract of the stem bark of four known compounds; canthin-6-one (), dihydrochelerythrine (), lupeol () and sesamin () were isolated. Characterization of the structures of these compounds was achieved using spectroscopic techniques (NMR and MS). Using resazurin reduction assay , and displayed moderate cytotoxicity with IC values below 50 μM against the drug sensitive CCRF-CEM and multidrug-resistant CEM/ADR5000 leukemia cell lines. It is interesting to note that was more active than the standard drug, doxorubicin against CEM/ADR5000 leukemia cells. Compounds and showed good selectivity on leukemia cells than normal cells. In future studies should be tested against a panel of drug resistant human cells.
Download full-text PDF |
Source |
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http://dx.doi.org/10.1080/14786419.2019.1587424 | DOI Listing |
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