<?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%">Jesús Rojas-Jaimes</style></author><author><style face="normal" font="default" size="100%">Marco Mesía-Guevara</style></author><author><style face="normal" font="default" size="100%">Maria Rojas-Puell</style></author><author><style face="normal" font="default" size="100%">Luis Castañeda- Pelaez</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Antiparasitic effect of Psidium guajava on promastigotes and axenic amastigotes of Leishmania</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%">Amastigote</style></keyword><keyword><style  face="normal" font="default" size="100%">Leishmania</style></keyword><keyword><style  face="normal" font="default" size="100%">Promastigote</style></keyword><keyword><style  face="normal" font="default" size="100%">Psidium guajava</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2022</style></year><pub-dates><date><style  face="normal" font="default" size="100%">January 2023</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">14</style></volume><pages><style face="normal" font="default" size="100%">973-977</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;Background&lt;/strong&gt;: Leishmaniasis is a stigmatic and mutilating disease due to pathogenic species of the genus Leishmania which, depending on the species and the individual's immune status, may vary clinically from a cutaneous, mucosal, and visceral form, and for which there is no suitable treatment without significant side effects.&lt;strong&gt; Objectives: &lt;/strong&gt;To measure the effect of ethanolic and aqueous extracts of&lt;em&gt; Psidium guajava&lt;/em&gt; against axenic promastigotes and amastigotes of &lt;em&gt;Leishmania spp.&lt;/em&gt; Methods: The method of [3- (3,4 -dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide] was used to study the antiparasitic effects of ethanolic (100mg/mL) and aqueous (100mg/mL) extracts of &lt;em&gt;Psidium guajava&lt;/em&gt; on axenic amastigotes cultures (8.1 x103 parasite/mL) and promastigotes (12 x 104 parasite/mL) obtained from a patient with cutaneous&amp;nbsp;leishmaniasis, and the percentage of parasite death was evaluated in comparison with Glucantime (300mg/mL) and untreated parasite cultures. &lt;strong&gt;Results: &lt;/strong&gt;Regarding parasite death in promastigotes, the ethanolic and aqueous extracts had a percentage of 22.58% and -45.16%, respectively, with no significant difference between treatments (N=3) (p= 0.058). In contrast, the ethanolic and aqueous extracts had an antiparasitic percentage of 91.67% and -70.83%, respectively, with a significant difference between treatments (N=3) (p&amp;lt;0.05).&lt;strong&gt; Conclusions: &lt;/strong&gt;Our study showed high and significant effectiveness in parasite death (91.67%) of &lt;em&gt;Leishmania&lt;/em&gt; axenic amastigotes of the ethanolic extract (100mg/mL) of &lt;em&gt;Psidium guajava,&lt;/em&gt; being this result promising and the basis for in vivo studies, using the ethanolic extraction of P. guajava&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">6s</style></issue><work-type><style face="normal" font="default" size="100%">Research Article </style></work-type><section><style face="normal" font="default" size="100%">973-977</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Jesús Rojas-Jaimes&lt;sup&gt;1,2,*&lt;/sup&gt;, Marco Mesía-Guevara&lt;sup&gt;1&lt;/sup&gt;, Maria Rojas- Puell&lt;sup&gt;1&lt;/sup&gt;, Luis Castañeda- Pelaez&lt;sup&gt;2&lt;/sup&gt;&lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Facultad de Ciencias de la Salud, Universidad Científica del Sur, Lima, PERU.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Facultad de Ciencias de la Salud, Universidad Privada del Norte, Lima, PERU.&lt;/p&gt;
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