<?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%">Dewi Sartika</style></author><author><style face="normal" font="default" size="100%">Gusbakti Rusip</style></author><author><style face="normal" font="default" size="100%">Linda Chiuman</style></author><author><style face="normal" font="default" size="100%">Ermy Girsang</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The Photoprotective Effect of Cucurbita moschata Seed Extract on Rat Skin Exposed to Ultraviolet Radiation</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%">collagen density</style></keyword><keyword><style  face="normal" font="default" size="100%">CPD</style></keyword><keyword><style  face="normal" font="default" size="100%">Cucurbita moschata</style></keyword><keyword><style  face="normal" font="default" size="100%">photoaging</style></keyword><keyword><style  face="normal" font="default" size="100%">UVB radiation</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2025</style></year><pub-dates><date><style  face="normal" font="default" size="100%">September 2025</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">17</style></volume><pages><style face="normal" font="default" size="100%">588-596</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;Photoaging induced by ultraviolet B (UVB) radiation is characterized by DNA damage, oxidative stress, extracellular matrix degradation, and collagen loss. This study evaluated the photoprotective effects of topical pumpkin seed (&lt;em&gt;Cucurbita moschata&lt;/em&gt;) extract cream against UVB-induced skin damage in Wistar rats. CPD (cyclobutane pyrimidine dimer), MDA (malondialdehyde), MMP-1 (matrix metalloproteinase-1) levels, and collagen density were assessed. UVB exposure significantly increased CPD, MDA, and MMP- 1 levels while reducing collagen density. Treatment with pumpkin seed extract cream, particularly at 10% concentration, markedly reduced CPD and MDA levels (&lt;em&gt;P ≤ &lt;/em&gt;0.05), indicating potent DNA repair support and antioxidant activity likely attributable to phenolic and flavonoid compounds. MMP-1 levels were significantly decreased, approaching normal values, suggesting inhibition of collagen degradation through anti-inflammatory and anti-matrix degradation mechanisms. Histological examination revealed higher collagen density and more organized collagen fibers in treated groups compared with negative control and placebo. These findings indicate that &lt;em&gt;Cucurbita moschata &lt;/em&gt;seed extract cream exerts strong photoprotective, antioxidant, anti-inflammatory, and collagen-preserving effects, with the 10% formulation showing the greatest efficacy.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">5</style></issue><work-type><style face="normal" font="default" size="100%">Original Article</style></work-type><section><style face="normal" font="default" size="100%">588</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Dewi Sartika&lt;sup&gt;1,2*&lt;/sup&gt;, GUSBAKTI RUSIP&lt;sup&gt;3&lt;/sup&gt;, Linda Chiuman&lt;sup&gt;4&lt;/sup&gt;, Ermy Girsang&lt;sup&gt;5&lt;/sup&gt; &lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Doctoral Program in Medical Science, Faculty of Medicine, Dentistry and Health Science, Universitas Prima Indonesia, INDONESIA&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Departement of Dermatology and Venereology, Faculty of Medicine, Dentistry and Health Science, Universitas Prima Indonesia, INDONESIA&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;3&lt;/sup&gt;Departement Family Medicine, Faculty of Medicine, Dentistry and Health Science, Universitas Prima Indonesia, INDONESIA&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;4&lt;/sup&gt;Center of Excellence for Phytodegenerative and Lifestyle Medicine, Faculty of Medicine, Dentistry and Health Science, Universitas Prima Indonesia, Medan, INDONESIA&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;5&lt;/sup&gt;Departement of Public Health, Faculty of Medicine, Dentistry and Health Science, Universitas Prima Indonesia, INDONESIA&lt;/p&gt;
</style></auth-address></record></records></xml>