<?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%">Thanitsara Songtavisin</style></author><author><style face="normal" font="default" size="100%">Benjamart Pratoomthai</style></author><author><style face="normal" font="default" size="100%">Warachin Gangnonngiw</style></author><author><style face="normal" font="default" size="100%">Jarinyaporn Naowaboot</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Azadirachta indica (Neem) Water Leaf Extract Inhibits Melanin Production and Tyrosinase Activity in B16F10 Melanoma Cells</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%">Azadirachta indica</style></keyword><keyword><style  face="normal" font="default" size="100%">Hyperpigmentation</style></keyword><keyword><style  face="normal" font="default" size="100%">Melanin</style></keyword><keyword><style  face="normal" font="default" size="100%">Melanogenesis</style></keyword><keyword><style  face="normal" font="default" size="100%">Tyrosinase</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2021</style></year><pub-dates><date><style  face="normal" font="default" size="100%">July 2021</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">13</style></volume><pages><style face="normal" font="default" size="100%">1030-1035</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Introduction: &lt;/strong&gt;Abnormal melanin production can cause pigmentary disorder such as hyperpigmentation. Finding a potent medicinal plants that can prevent pigment disorder. Objective: This study was to investigate the potential of leaf extract from&lt;em&gt; Azadirachta indica&lt;/em&gt; var &lt;em&gt;siamensis valeton&lt;/em&gt; to inhibit melanin formation or melanogenesis. &lt;strong&gt;Materials and Methods: &lt;/strong&gt;&lt;em&gt;A.indica&lt;/em&gt; leaf extract was tested for phenolic and flavonoid content assay. Tests using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay were administered to determine the toxicity of &lt;em&gt;A.indica &lt;/em&gt;leaf extract in B16F10 melanoma cells. Melanin content and tyrosinase activity assays were used to determine the potential for the inhibition of melanogenesis. Data was analyzed using SPSS. &lt;strong&gt;Results: &lt;/strong&gt;It was found that &lt;em&gt;A.indica &lt;/em&gt;leaf extract per gram has a total phenolic content of 28.73 ± 0.30 mg gallic acid equivalents and flavonoid of 12.48 ± 0.00 mg rutin equivalent. In addition, we found that these herbal extracts decreased the melanin content and intracellular tyrosinase activity in B16F10 melanoma cells without any toxicity. This study suggested that the melanin content and intracellular tyrosinase activity in B16F10 melanoma cells were decreased without any cytotoxicity by the &lt;em&gt;A.indica&lt;/em&gt; leaf water extract. &lt;strong&gt;Conclusion:&lt;/strong&gt; The findings demonstrated that &lt;em&gt;A.indica&lt;/em&gt; leaf water extract inhibits melanin production through reducing tyrosinase activity. These results could be useful as a therapeutic treatment for skin hyperpigmentation disorders as well as an effective ingredient in whitening cosmetics.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">4</style></issue><work-type><style face="normal" font="default" size="100%">Research Article</style></work-type><section><style face="normal" font="default" size="100%">1030</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Thanitsara Songtavisin&lt;sup&gt;1,&lt;/sup&gt;*, Benjamart Pratoomthai&lt;sup&gt;2&lt;/sup&gt;, Warachin Gangnonngiw&lt;sup&gt;3&lt;/sup&gt;, Jarinyaporn Naowaboot&lt;sup&gt;4&lt;/sup&gt;&lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Division of Anatomy, Faculty of Medicine, Thammasat University, Paholyothin Road, Klong Nueng, Klong Luang, Pathumthani 12121, THAILAND.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Department of Basic Medical Science, Faculty of Medicine, Navamindradhiraj University, Thanon Samsen, Dusit District, Bangkok 10300, THAILAND.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;3&lt;/sup&gt;Centex Shrimp, Faculty of Science, Mahidol University, Rama VI Road, Ratchathewi, Bangkok 10400, THAILAND.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;4&lt;/sup&gt;Division of Pharmacology, Faculty of Medicine, Thammasat University, Klong Nueng, Klong Luang, Pathumthani 12121, THAILAND.&lt;/p&gt;
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