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Jurnal Kedokteran Hewan June 2018, 12(2):53-56
P-ISSN : 1978-225X; E-ISSN : 2502-5600 DOI: https://doi.org/10.21157/ j.ked.hewan.v12i2.10497
53
THE POTENTIAL EFFECT OF RED DRAGON FRUIT (Hylocereus
polyrhizus) PEEL ETHANOL EXTRACT ON ENDOMETRIOSIS
PROGRESSIVITY IN ENDOMETRIOSIS MICE
Anindya Hapsari1* and Yanuar Eka Pujiastutik2
1Department of Public Health, Sport Science Faculty, Universitas Negeri Malang, Malang, East Java, Indonesia
2Department of Nursing, Faculty of Health Sciences, Institut Ilmu Kesehatan Bhakti Wiyata, Kediri, East Java, Indonesia
*Corresponding author: anindya.hapsari.fik@um.ac.id
ABSTRACT
The aim of this study was to know the effect of red dragon fruit (Hylocereus polyrhizus) peel ethanol extract at dose of 0.25, 0.5, and 1 mg/g
bw on endometriosis progressivity, signed by granuloma, on mouse model of endometriosis. Twenty five female mice were used as samples and
divided into 5 groups: 1 positive control, 1 negative control, and 3 treatment groups. Positive control and treatment groups were induced as model
of endometriosis for 14 days. The next 14 days, placebo was given to both control groups, while red dragon fruit peel ethanol extract at dose of
0.25, 0.5, and 1 mg/g bw were given to mice in treatment groups as much as 0.2 mL/25 g bw/day orally. Endometriotic lesion was examined.
Result showed that there were significantly differences on granuloma among control groups and treatment groups. The conclusion was red
dragon fruit peel ethanol extract could inhibit endometriosis progressivity, signed by granuloma, on mouse model of endometriosis.
____________________________________________________________________________________________________________________
Key words: endometriosis progressivity, granuloma, red dragon fruit peel ethanol extract
ABSTRAK
Penelitian ini bertujuan mempelajari pengaruh dari ekstrak etanol kulit buah naga merah (Hylocereus polyrhizus) dosis 0,25; 0,5; dan 1
mg/g bb terhadap progresivitas endometriosis yang ditandai dengan granuloma pada hewan coba mencit model endometriosis. Sampel
penelitian adalah 25 ekor mencit betina, yang dikelompokkan dalam 5 kelompok: 1 kelompok kontrol positif, 1 kelompok kontrol negatif, dan 3
kelompok perlakuan. Kelompok kontrol positif dan kelompok perlakuan dijadikan mencit model endometriosis selama 14 hari. Selanjutnya,
selama 14 hari berikutnya, kelompok kontrol negatif dan kelompok kontrol positif diberi plasebo, sedangkan kelompok perlakuan diterapi ekstrak
etanol kulit buah naga merah dosis 0,25; 0,5; dan 1 mg/g bb mencit sebanyak 0,2 ml/25 g bb/hari. Lesi endometriosis kemudian diperiksa. Hasil
penelitian menunjukkan terdapat perbedaan secara bermakna pada granuloma antara kelompok kontrol dan kelompok perlakuan. Kesimpulan
penelitian ini adalah ekstrak etanol kulit buah naga merah mampu menghambat progresivitas endometriosis, yang ditandai dengan granuloma
pada hewan coba mencit model endometriosis.
____________________________________________________________________________________________________________________
Kata kunci: progresivitas endometriosis, granuloma, ekstrak etanol kulit buah naga merah
INTRODUCTION
Infertility is the inability of a sexually active, non-
contraception couple to achieve pregnancy in one year.
Infertility is a disease of the reproductive system
defined by the failure to achieve a clinical pregnancy
after 12 months or more of regular unprotected sexual
intercourse (Schmidt, 2006). The prevalence of
infertility in whole world is increasing, reaching 10-
15% among all reproductive-aged couples (Deka and
Sarma, 2010). Infertility can be caused by many
factors; one of them is endometriosis (Hendarto, 2015).
Endometriosis is the presence of endometriosis-like
tissue outside the uterus, which induces a chronic
inflammatory reaction (ESHRE, 2013). This chronic
inflammatory process make endometriosis as a
progressive disease that can destroy structures at
peritoneum cavity so that reproductive system,
functions, and processes can be disturbed (Schenken
and Guzick, 1997). The progressivity of endometriosis
on peritoneum cavity can be seen by seeing peritoneum
level of destruction or abdominal adhesion. This
destruction is signed by inflammation, granulomas,
abscess/necrosis, and fibrosis (Klopfleisch, 2013).
Granuloma or granulomatous inflammation is a
distinctive form of chronic inflammation produced in
response to various infectious, autoimmune, toxic,
allergic, and neoplastic conditions. Granuloma is
defined by the presence of mononuclear leucocytes,
particularly macrophages that respond to various
chemical mediators of cell injury. Granuloma can
occurs in all age groups and within all tissue sites (Shah
et al., 2017).
To prevent endometriosis progressivity, there are 2
common managements that can be done, empirical
treatments and surgery. However, the recurrence rate
after treatment is still high, reaching about 35% in mild
endometriosis and 74% in severe endometriosis
(Speroff and Fritz, 2005). The high recurrence rate due
to endometriosis is a progressive disease that needed
long-time treatment (Annas et al., 2014).
As an alternative therapy to overcome chronic
inflammation condition, endometriosis patients may
consume traditional drugs that have anti-inflammatory
effects. One of plants that has been known for its anti-
inflammatory effect and was able to inhibit carcinoma
mammae cells (MCF-7) in vitro is red dragon fruit
(Hylocereus polyrhizus) (Sarasmita and Laksmiani,
2015). Red dragon fruit is a plant that is included in
Cactaceae family dan Hylocereanea subfamily
(Wybraniec et al., 2007; Nurliyana et al., 2010).
Ethanolic extract of red dragon fruit peel contains
betalain that is able to inhibit transcription factor NF-
κB so that inflammatory genes expression, such as
TNF-α and IL-1β, will not be released (Sarasmita and
Laksmiani, 2015).
Amindya Hapsari and Yanuar Eka Pujiastutik
54
Recently, the information regarding the potential
effect of ethanolic extract of red dragon fruit peel on
endometriosis progressivity is not available. Therefore,
this study was conducted to know the potential effect of
ethanolic extract of red dragon fruit peel at dose of
0.25; 0.5; and 1 mg/g bw to endometriosis
progressivity, signed by granuloma, on mouse model of
endometriosis.
MATERIALS AND METHODS
This study has been received approval ethical
clearance letter of animal subjects from Faculty of
Veterinary Medicine, Universitas Airlangga with
number 710-KE. This study was a laboratory
experimental research. Twenty five female mice (Mus
musculus), aged 2-3 months and weighed 20-25 g, were
used as samples.
Female mice divided into 5 groups after adaptation
for a week. These groups consist of positive control
group (K1), negative control group (K2), treatment
group with ethanolic extract of red dragon fruit peel at
dose of 0,25 mg/g bw/day (K3), treatment group with
ethanolic extract of red dragon fruit peel at dose of 0.5
mg/g bw/day (K4), and treatment group with ethanolic
extract of red dragon fruit peel at dose of 1 mg/g
bw/day (K5). The mice in positive control and
treatment groups were induced endometriosis by this
following steps: 1) injection of cyclosporin A (0.2
mL/mice) intramuscularly on day one to make mice in
immunodeficiency state; 2) injection of ethinyl
estradiol 20.000 IU (0.1 mL/mice) on day one and five;
3) injection of implant tissue (0.1 mL/mice) in the
peritoneal cavity on day one. Implant tissue was
derived from the myometrium and endometrium of
gynecologic benign tumor patients who underwent
surgery procedure and did not use hormonal
contraception at least for last 3 months before surgery.
The animal model was observed for 14 days to be the
mice model of endometriosis.
Starting from day 15, 0.5% Na-carboxymethyl
cellulose (Na-CMC) was given to both control groups
as placebo, while ethanolic extract of red dragon fruit
peel was given to 3 treatment groups (K3, K4, and K5)
at dose of 0.25, 0.5, and 1 mg/g bw/day, respectively.
These placebo and extract was administered orally (0.2
mL/25 g bw/day) for 14 days with an oral gavage.
At the end of experiment, mice were anesthetized
with ketamine and acepromazine, and then the
endometriosis lesions were collected. Formalin-fixed
and paraffin-embedded tissue sections from
endometriosis lesion were stained with hematoxillin
eosin (HE) to evaluate granulomas. Granulomas from 2
endometriosis lesions then were counted and evaluated
based on Klopfleisch scoring. The score criteria are:
0= no granuloma mass, 2= any granuloma mass and/or
11-50 macrophage infiltration observed, 4= granuloma
mass with abscess observed, 6= granuloma mass with
abscess and muscle necrosis observed and
8= granuloma mass with abscess, muscle necrosis, and
fibrosis observed (Klopfleisch, 2013).
Shapiro-Wilk test was used to know the normality
of data and Levene test was used to know the
homogeneity of data. If distribution and homogeneity
of data were normal (P>0.05), one way analysis of
variance (ANOVA) test was conducted, followed with
posthoc Bonferroni. But, if the data distribution or
homogeneity was not normal, Kruskall-Wallis test
followed with Mann-Whitney test, were conducted.
Table 1
. Granulomas on mice model endometriosis among control group and treatment groups using Mann-Whitney test
K1 K2 K3 K4 K5
K1 - 0,008* 0,032* 0,310 1,000
K2 0,008* - 0,016* 0,008* 0,008*
K3 0,032* 0,016* - 0,151 0,032*
K4 0,310 0,008* 0,151 - 0,310
K5 1,000 0,008* 0,032* 0,310 -
*P= 0.001. K1= Positive control group, K2= Negative control group, K3= Treatment group with ethanolic extract of red dragon fruit peel at
dose of 0,25 mg/g bw/day, K4= Treatment group with ethanolic extract of red dragon fruit peel at dose of 0.5 mg/g bw/day, K5= Treatment
group with ethanolic extract of red dragon fruit peel at dose of 1 mg/g bw/day
Figure 1. Chronic inflammation signed by fibrous formation and granuloma mass on peritoneum cavity of endometriosis mice.
A= Fibrous formation (arrow) among muscles, B= Granuloma mass (arrow) and massive infiltration of inflammatory cells on muscles (HE,
400x)
Amindya Hapsari and Yanuar Eka Pujiastutik
55
RESULTS AND DISCUSSION
Result showed that there were chronic inflammation
signed by fibrous formation and granuloma mass on
peritoneum cavity of endometriosis mice (Figure 1).
The granuloma mass was more pronounced in positive
control group (K2) than other groups (Figure 2). There
were mean differences among K1, K2, K3, K4, and K5
groups, as seen on Table 1. The endometriosis
progressivity, signed by granulomas formation, was
decreased on treatment groups. This reduction was
linear with the increasing dose of ethanolic extract of
red dragon fruit peel.
Shapiro-Wilk test showed that data in group 1, 2, 4,
and 5 were not normally distributed (P<0.05). Levene
test also showed that data were not homogenous,
therefore one way ANOVA test could not be
conducted. Statistical analysis was then conducted by
Kruskall-Wallis test with P= 0.001, that means there
was at least 1 significantly differences between 2
groups. Mann-Whitney test showed that there were
significantly differences between: K1 and K2, K1 and
K3, K2 and K3, K2 and K4, K2 and K5, and K3 and
K5 (Table 1).
The result of this study showed that ethanolic
extract of red dragon fruit peel was capable of reducing
endometriosis progressivity, signed by less granulomas
formation, on mice model endometriosis. Ethanolic
extract of red dragon fruit peel at dose of 0.5 and 1
mg/g bw had no significant differences with negative
control group, so it could be said that ethanolic extract
of red dragon fruit peel on dose 0.5 and 1 mg/g bw
could reduce granulomas on endometriosis mice
reaching levels to those comparable to healthy mice.
Granuloma is defined by the presence of
mononuclear leucocytes, specifically macrophages
Figure 2. The granuloma mass (arrow) on peritoneum cavity of endometriosis mice in different groups. K1= Positive control group,
K= Negative control group, K3= Treatment group with ethanolic extract of red dragon fruit peel at dose of 0,25 mg/g bw/day, K4= Treatment
group with ethanolic extract of red dragon fruit peel at dose of 0.5 mg/g bw/day, K5= Treatment group with ethanolic extract of red dragon fruit
peel of 1 mg/g bw/day (HE, 400x)
Amindya Hapsari and Yanuar Eka Pujiastutik
56
(Shah et al., 2017). On endometriosis, peritoneal
macrophages are first cells that are activated. These
macrophages play role as secretors for pro-
inflammatory cytokines which create ideal micro
environment for endometriosis cells to progress
(Sourial et al., 2014). One of these pro-inflammatory
cytokines is tumor necrosis factor-α. Tumor necrosis
factor-α plays its role through NF-κB pathway. It can
stimulate endometriosis cells to express monocyte
chemotactic protein 1 (MCP-1) which roles as chemo-
attractor to attract more macrophages to the lesions. So
we can find a large number of macrophages that form
granulomatous inflammation on endometriosis lesions
and peritoneal fluid (Grund et al., 2008; Gonzalez-
Ramos et al., 2012; Zheng et al., 2012).
Ethanolic extract of red dragon fruit peel were
given to mice model endometriosis to inhibit NF-κB
pathway which is activated by macrophage and
endometriosis cells when these cells bind to their
receptors (Martinez et al., 2014). By blocking NF-κB
pathway, it was supposed that the genes expression of
TNF-α and MCP-1 reduced, so that macrophage
migration to endometriosis lesion would also be
decreased and there would be less granuloma
formation.
CONCLUSION
Ethanolic extract of red dragon fruit peel could
inhibit endometriosis progressivity, signed by less
granuloma formation, on mouse model of
endometriosis.
ACKNOWLEDGEMENT
The authors wish to thank Djoko Legowo, DVM,
M.Sc for help with the interpretation of histology.
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