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Immunomodulatory effect of Parkia speciosa Hassk. pods extract on rat induced by Salmonella typhimurium


J Pharm Pharmacogn Res 8(5): 457-465, 2020.
Image: Flickr

Original Article

Immunomodulatory effect of Parkia speciosa Hassk. pods extract on rat induced by Salmonella typhimurium

[Efecto inmunomodulador del extracto de vainas de Parkia speciosa Hassk. en ratas inducidas por Salmonella typhimurium]

Fitrya Fitrya1*, Annisa Amriani1, Rennie Puspa Novita1, Elfita2, Dewi Setiorini1

1Pharmacy Department, Sriwijaya University, Palembang, Indonesia.2Chemistry Department, Sriwijaya University, Palembang, Indonesia.*E-mail: fitrya@unsri.ac.id

Abstract

ContextParkia speciosa, which has phenolic compounds and pharmacology activities, is a plant having potential immunomodulatory agents from the extract of its pod.

Aims: To evaluate the potential of P. speciosa as an immunomodulatory agent tested on albino rats induced by the bacteria Salmonella typhimurium leading to typhoid fever.

Methods: The animals were divided into six groups: normal non-infected group, negative control group, positive control, and three test groups with doses of 200, 400 and 800 mg/kg BW. The test groups were treated by the extract for 12 days. The control and test groups were induced with the S. typhimurium on the 8th day. On day 12th, CD4+, total leukocytes, differential cell count, and histology of the spleen organ were evaluated. Statistical analysis was performed by using one-way ANOVA followed post hoc LSD test (α 0.05).

Results: The result showed that the ethanol extract of P. speciosa pod could increase the number of CD4+. The extract to 200 and 400 mg/kg BW doses increased in the parameters of leukocyte, neutrophil, lymphocyte and monocyte with insignificant differences compared to that of the positive control group (p>0.05). However, there were significant differences between the two first parameters between the test group with 800 mg/kg BW doses compared to the positive control group. Moreover, more necroses in the spleen were observed from histological analysis on 800 mg/kg BW doses than 400 mg/kg BW.

Conclusions: In general, P. speciosa ethanolic extract can increase the immune system based on the CD4+ count, leukocyte, monocyte, and neutrophil, and causes normal necroses in low doses.

KeywordsParkia speciosa; immunomodulator; Salmonella typhimurium; typhoid fever.

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