<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">BiYun Gu</style></author><author><style face="normal" font="default" size="100%">Joseph Shalom</style></author><author><style face="normal" font="default" size="100%">Ian E. Cock</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Anti-Proliferative Properties of Terminalia sericea Burch. Ex Dc Leaf Extracts Against Caco2 and HeLa Cancer Cell Lines</style></title><secondary-title><style face="normal" font="default" size="100%">Pharmacognosy Journal</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Anticancer activity</style></keyword><keyword><style  face="normal" font="default" size="100%">Antioxidant Capacity</style></keyword><keyword><style  face="normal" font="default" size="100%">Antiproliferative Activity</style></keyword><keyword><style  face="normal" font="default" size="100%">Apoptosis</style></keyword><keyword><style  face="normal" font="default" size="100%">Combretaceae</style></keyword><keyword><style  face="normal" font="default" size="100%">DPPH</style></keyword><keyword><style  face="normal" font="default" size="100%">Silver Cluster Leaf</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2018</style></year><pub-dates><date><style  face="normal" font="default" size="100%">March 2018</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://fulltxt.org/article/499</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">10</style></volume><pages><style face="normal" font="default" size="100%">408-415</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p style=&quot;text-align: justify;&quot;&gt;&lt;strong&gt;Introduction:&lt;/strong&gt; &lt;em&gt;Terminalia&lt;/em&gt; spp. are characterised by their high levels of antioxidant phytochemicals and several species have anticancer activity. This study examines the anti-proliferative activity of &lt;em&gt;T. sericea&lt;/em&gt; leaf extracts against Caco2 and HeLa carcinoma cell proliferation. &lt;strong&gt;Methods:&lt;/strong&gt; Solvent extracts were prepared from &lt;em&gt;T. sericea&lt;/em&gt; leaves and their antioxidant capacities were determined by the DPPH free radical scavenging assay. Anti-proliferative activities against Caco2 and HeLa cancer cells were determined by an MTS based cell proliferation assay. Toxicity was determined using the &lt;em&gt;Artemia franciscana&lt;/em&gt; nauplii bioassay. &lt;strong&gt;Results:&lt;/strong&gt; The methanolic and aqueous &lt;em&gt;T. sericea&lt;/em&gt; leaf extracts displayed high antioxidant capacities (equivalent to 150 and 340 mg of ascorbic acid per gram of plant material extracted respectively). In contrast, the ethyl acetate, chloroform and hexane extracts had relatively low antioxidant contents (&amp;le;5 mg of ascorbic acid equivalents per gram of plant material extracted). The antioxidant contents of the &lt;em&gt;T. sericea&lt;/em&gt; leaf extracts correlated with the ability of the extracts to inhibit proliferation of Caco2 and HeLa cancer cell lines. The high antioxidant methanolic and aqueous extracts were potent inhibitors of cell proliferation, with IC&lt;sub&gt;50&lt;/sub&gt; values 120-1400 &amp;mu;g/mL. The aqueous &lt;em&gt;T. sericea&lt;/em&gt; leaf extract was particularly effective, with IC&lt;sub&gt;50&lt;/sub&gt; values of 528 and 120 &amp;mu;g/mL against Caco2 and HeLa cells respectively. The methanolic extract also displayed good, albeit substantially less potent, antiproliferative activity against HeLa cells, with an IC&lt;sub&gt;50&lt;/sub&gt; of 1358 &amp;mu;g/mL. In contrast, the lower antioxidant content extracts generally did not inhibit cancer cell proliferation. Cell imaging studies detected morphological features consistent with apoptosis in Caco2 cells exposed to sub-lethal concentrations of the methanolic and aqueous T. sericea leaf extracts, indicating that these extracts are functioning by cytotoxic mechanisms. The aqueous &lt;em&gt;T. sericea&lt;/em&gt; leaf extract displayed low to moderate toxicity in the &lt;em&gt;Artemia franciscana&lt;/em&gt; bioassay, with an LC&lt;sub&gt;50&lt;/sub&gt; value of 737 &amp;mu;g/mL. All other extracts were nontoxic. &lt;strong&gt;Conclusion:&lt;/strong&gt; The antiproliferative activity and low toxicity of the &lt;em&gt;T. sericea &lt;/em&gt;methanolic and aqueous leaf extracts extracts against HeLa and Caco2 cancer cell lines indicates their potential in the treatment and prevention of some cancers.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue><work-type><style face="normal" font="default" size="100%">Original Article</style></work-type><section><style face="normal" font="default" size="100%">408</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p style=&quot;text-align: justify;&quot;&gt;&lt;strong&gt;BiYun Gu&lt;sup&gt;1,2&lt;/sup&gt;, Joseph Shalom&lt;sup&gt;1,3&lt;/sup&gt;, Ian E. Cock&lt;sup&gt;1,3* &lt;/sup&gt;&lt;/strong&gt;&lt;/p&gt;
&lt;p style=&quot;text-align: justify;&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;School of Natural Sciences, Nathan Campus, Griffith University, 170 Kessels Rd, Nathan, Queensland 4111, AUSTRALIA.&lt;/p&gt;
&lt;p style=&quot;text-align: justify;&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, CHINA.&lt;/p&gt;
&lt;p style=&quot;text-align: justify;&quot;&gt;&lt;sup&gt;3&lt;/sup&gt;Environmental Futures Research Institute, Nathan Campus, Griffith University, 170 Kessels Rd, Nathan, Queensland 4111, AUSTRALIA.&lt;/p&gt;</style></auth-address></record></records></xml>