Effects of Gambir (Uncaria gambir Roxb) Catechins on Burn Wound
Healing in Male Rats
Muhammad Yanis Musdja
1
, Lina Elvita
2
, Nursetyowati Rahayu
3
1, 2, 3
Department of Pharmacy, Faculty of Medicne and Health Sciences, State Islamic University,
Syarif Hidayatullah, Jakarta, Indonesia.
Keywords: Catechins, Burn wound healing, Male rats Uncaria gambir,
Abstract: Background: Indonesia is the largest Uncaria gambir, Roxb (gambir) producing country in the world, but its
benefits as a medicinal plant has not been optimally developed. Traditionally, gambir plants have been
widely used by a lot of people as burn wound healing. Objective: This study aims to determine the effect of
gambir catechins crude for burn wound healing through histopathological observations on white rats male.
Methods: Gambir Catechins crude was isolated by using partition method with ethyl acetate solvent. The
rats were made to suffer burn wound based on Akhoondinasab methods et al. A total of 30 male white rats
were divided into 5 groups and given daily test preparations. A total of 3 groups were given gambir
catechins crude gel with variations of concentrations of 1%, 2% and 4%), for positive control group was
used a commercial drug that contains 10% placenta extract and 0.5% Neomycin sulfate and one other group
was used as a negative control. After administration of test preparation for 21 days, histopathology changes
was observed in the burn wound that occurred. Results: Statistical analysis showed that gel gambir
catechins crude with concentrations 2% had effect of decreasing the burn wound area and an increase in
the percentage of healing of burn wound that did not differ significantly from positive controls (P <0.05).
Histopathologic observations showed that catechins crude of gambir were able to reduce the number of
inflammatory cells and increase neocapillary formation compared with the negative control group.
Conclusion: Gambir catechins crude with concentration 2 % could help the healing process of second
degree of burn wound on the inflammatory phase and proliferation.
1 INTRODUCTION
Burn wound is one of the most common and
devastating forms of trauma and a major health
problem of morbidity and mortality worldwide,
because burn wound is very frequent cause of
infection and difficult to cure and often cause
scarring on the burn wound tissue (Kaddoura et al
2017, Church et al 2006). This greatly reduces the
value of skin beauty and the price of these drugs is
very expensive (Rowan et al, 2015) Current
methods to treat burn wound include antibiotics,
antiphlogistics, and silver salt, which possesses
major drawbacks and unwanted side effects,
(Waserman, 2002, Atiyeh et al, 2007) Therefore it
is necessary to find a healing drugs burn wound that
does not cause scarring on the burn wound tissue
and the price is cheaper. Generally drugs that come
from natural ingredients have smaller side effects.
One of the natural ingredients that have been proven
to be better and safer for burn wound healing than
synthetic drugs that are widely used today (1% silver
sulphadiazine cream) is Aloe Vera Gel (Shahzad and
Ahmed, 2013)
According to the research result of Hananeh et
al (2015) the use of propolis cream was the best
overall wound healing effects in full thickness
skin wounds in rats, where in this study, the
inflammatory reaction was weaker in the
propolis treated group than in the other groups
treated with silver sulphurdiazine (SSD) and
bepanthane (Hananeh et al 2015). Besides that
Centella asiatica also has a very good effect on burn
wound healing (Somboonwong et al, 2012)
On the other hand, the use of honey as a topical
treatment of wounds in diabetic patients in both
human and veterinary medicine, revealed that both
natural honey and amikacin enhanced wound
healing in non -diabetic rat patients. Honey
showed more promising results compared to
Musdja, M., Elvita, L. and Rahayu, N.
Effects of Gambir (Uncaria gambir Roxb) Catechins on Burn Wound Healing in Male Rats.
DOI: 10.5220/0009845600002406
In Proceedings of BROMO Conference (BROMO 2018) - Symposium on Natural Product and Biodiversity, page 1
ISBN: 978-989-758-347-6
Copyright
c
2022 by SCITEPRESS Science and Technology Publications, Lda. All rights reserved
1
amikacin in enhancing the healing of full-
thickness punch biopsy wounds in diabetic rats
(Hananeh et al 2015)
Gambir (Uncaria gambir, Roxb) is a kind of
herbal that has been known in Indonesia and other
countries for a long time. Gambir is added on betel
nut chewing as well as additional substance in
traditional herbal medicine. Traditionally gambir has
been used for people with diarrhea, sore throat, burn
wound healing, anti-cancer, immunomodulator,etc
(Musdja et al 2017, Li et al, 2013)
The main content of the gambir is catechins (up
to 51%), tannin (22-50%), and a number of alkaloids
such as gambirtannin, derivatives dihydro and oxo
of gambirtannin. There are 9 types of catechins that
were found of gambir, namely; (+)-Catechin, (+)-
epicatechin, Gambiriin A1, Gambiriin A2,
Gambiriin B2, Epigallocatechin, Catechin-(4α-8)-
ent-epicatechin, Gambirflavan D1 and
Gambirflavan D2 (Taniguchi et al, 2008).
According to research of Musdja et al (2017),
“The (+)Catechin was the highest level among 9
types of catechins with concentration about 45.66%
of the total catechins in gambir. Therefore (+)-
catechin can be used as a biomaker to determine the
quality of gambir. Therefore in this study only (+)-
catechin (biomarkers) was measured by a
spectrophotometer UV-VIS at wavelength 279
nm” (Musdja et al, 2017, Isnawati, 2010)
Figure 1. (+)Catechin, main content of gambir (Musdja
et al, 2017)
Extract of gambir could inhibit the growth of
Streptococcus mutans, Staphylococcus aures and
Bacillus subtilis extract of gambir also could inhibit
the growth of Helicobacter phylori that resistent to
antibiotic (Heitzman et al, 2005, Voravuthikunchai,
and Mitchell 2008). The effect of gambir as an
antimicrobial is thought to prevent infection in burns
wound, so it will accelerate on burn wound healing
(Mohamed et al, 2008)
In addition, traditionally, a lot of people in
Indonesia have long used gambir as a drug for burn
wound healing. Based on this reason, we conducted
a study on the effect of gambir catechins on burn
wound healing on male rats.
2. METHODS
Gambir was obtained from Payakumbuh region,
West Sumatra, the largest producer of gambir in
Indonesia, to ensure that the sample used was
Uncaria gambir Roxb, in this research was done
determination of plant taxonomy in Biological
Research Center of Indonesian Institute of Sciences,
Bogor, Indonesia.
Phytochemical screening of gambir extract was
done based on Harbone methods. (Harborne, 1998,
Farsworth, 1969 ).
Catechins isolation from gambir extract was
done based on National Standard Indonesia: SNI 01-
3391-2000, “A total of 500 g of gambir powder was
extracted with a water solvent at temperature of 90 -
96 0C for 15 minutes while stirring. Then the
infusion was filtered in hot conditions using a funnel
coated with filter paper. The extract obtained was
partitioned with ethyl acetate, the ratio of extract
with ethyl acetate (1 : ½.). Ethyl acetate phase was
taken and the water phase was partitioned repeatedly
with ethyl acetate until a clear solution was obtained.
The ethyl acetate phase was condensed with an
evaporator, then washed with cold water and
filtered. Catechins that obtained was dried in an
oven at temperature 70 °C”. Then, The quality of
gambir extract was determined based on National
Standard Indonesia: SNI 01-3391-2000. In this
research, the yield of catechins obtained from the
gambir extract was determined as (+)-catechins by
comparing with standard (+)-catechins and measured
by a spectrophotometer UV-VIS at wavelength 279
nm. (Ferdinal, 2014, Hargono, 1986).
The yield catechins from gambir calculated
by the formula:
weight of acquired isolate
% Yield = x% purity
weight of extracted powder
Preparation of catechins gel was made base on
modification of (Eva et al, 2014, Rini et al 2013 )
methods. In this experiment, crude catechins of
gambir was mixed into gel formulations as below.
Na CMC 3,75%
Propilen glikol 3,75%
Gliserin 7,5%
Nipagin 0,05%
Aquadest ad 60
The crude catechins of gambir in the gel
formula was prepared with concentrations : 1%, 2%
and 4% b/w . Evaluation of this formulation was
BROMO 2018 - Bromo Conference, Symposium on Natural Products and Biodiversity
2
done by determination: organoleptic, homogeneity,
viscosity and pH of the gel formula based on the
provisions of the Drug and Food Control Agency, RI
(Ditjen POM RI, 2000)
Experimental Animal was used male white
rats (Rattus novergicus) Sprague Dawley strain,
aged 2-3 months with a weight of 150-190 gram.
Animals were acclimatized for 1 week in order to
adaptation to the environment and during the
adaptation process was carried out observations of
general conditions and animals weight were weighed
every day. Animals that qualify for the experiment
were selected (Hoekstra et al, 1993, Amini et al,
2010)
Burn wound was made based on a method
undertaken by Akhoondinasab et al, 2014. Testing
the effects of burn wound healing was done on 30
rats. The feather on the dorsal area about 3 cm from
the ear of the rats was shaved and given local
anaesthesia with ketamine. Burn wound induction
process was performed by using a 4x2 cm iron plate
heated for 5 minutes in boiling water and then
attached to the skin of the back for 10 seconds at the
same pressure (Akhoondinasab et al, 2014)
Animals were divided into 5 groups and each
group consisted of 6 rats, each group was used for
testing, positive control, negative control, gambir
catechins crude with doses : 1%, 2% and 4% b/w.
The burns wound were observed and measured,
and then smeared the drug according to each group,
namely, negative control with gel base, positive
control with commercial drug that contains 10%
placenta extract and 0.5% Neomycin sulfate and
three groups with crude catechins of gambir with
concentration of 1%, 2% and 4%.
Giving test gels were done topically as much as
0.2 g for 1x polishing by applying it on the burn
wound in each group of treatment rats. Giving test
gels were done every day, from day 1 to day 21, 2
times a day, in the morning and evening
Histopathological observations were done in
daily from day 1 to day 21 after burns wound to all
treatment rats. Observation was done by looking
directly at the burn wound healing. To assess burn
wound healing, photographs obtained were
processed with Image software and calculated the
percentage of healing (Akhoondinasab et al, 2014)
Skin tissue samples were taken on the 7th day,
from each of the five groups were taken 1 rat. Skins
retrieval were carried out after rats were euthanized
by using ether solution per inhalation. The area skins
of the back would be taken were cleansed from the
hair that starts to grow, the skins were cut with a
thickness of ± 3 mm to the sub-cutaneous with area
of 1-1.5 cm
2
. The skins obtained were fixed with a
10% Formalin Neutral Buffer solution and left at
room temperature for ± 48 hours (Kulac et al 2013,
Prasetyoet al 2010)
The skin tissue obtained was made
histopathological preparations with Hematoxylin-
Eosin dye by the Histopathology team at the
Pathology Laboratory, Faculty of Medicine,
University of Indonesia.
Histopathologic observations were done on skin
tissue preparations taken on day 7. The observations
were done by descriptive light microscopy. These
observations include the parameters that play a role
in burn wound healing namely the presence of
inflammatory cells and neocapillarization. (Jose et al
2010)
Histopathology Observation Scoring Reading
was done by using Hosseini methods, (S.V. Hosseini
et al 2011)
For measurement of percentage of wound
healing, done by looking directly at the wound then
measured the area of burn with image application
and calculated the percentage of healing burns and
calculated with formula in below :
(extent of initial wound-wound end)
% Burn wound healing = X100%
(initial wound area)
The test results data were analyzed using data
processing software and presented in the mean and
standard deviation of each group. The data were
processed using statistical analysis with normality
test, homogeneity test, One Way ANOVA and
Kruskal-Wallis Test.
3. RESULT AND DISCUSSION
The result of determination of plant taxonomy in
Biological Research Center of Indonesian Institute
of Sciences, Bogor, Indonesia stated that the plant
extract used in this research was an extract from
Uncaria gambir Roxb.
The result of screening of chemical group
content of gambir extract based on Harbone
methods was shown in table 1. This was the same
with the research results of Taniguchi et al (2008),
that gambir extract contains groups of chemical
compounds alkaloids, flavonoids, saponins, tannin
and Quinone (Taniguchi et al, 2008).
Gambir quality that was used in this study, when
compared with the provisions of the Indonesian
Effects of Gambir (Uncaria gambir Roxb) Catechins on Burn Wound Healing in Male Rats
3
National Standard: (Indonesian National Standard:
SNI 01-3391-2000) as shown in table 2.
Gambir used in this research was number one
quality, or fulfills the requirements for research.
Table 1. The content of groups of chemical compounds in
the gambir extract that was studied
Chemical group
Results
Alkaloids
+
Flavonoids
+
Saponin
+
Tannin
+
Quinone
+
Steroids &
Triterpenoids
-
Essential oil
-
Qoumarine
-
Catechins are flavonoid compounds that include
natural phenolic compounds that are potential as
antioxidants and have bioactivity as a drug (Lucida,
2007). The working mechanism of the flavonoid is
to circulate blood throughout the body and prevent
the occurrence of blockage in the blood vessels
(Handayani, 2015). In addition, catechins are
potentially antibacterial (Arakawa et al 2004)
According to Anggraini et al (2011) flavonoid
compounds have anti-inflammatory effects that
serve as anti-inflammatories and are able to prevent
stiffness and pain (Anggraini et al 2011).
Catechins have activity as antibacterial,
especially gram-positive bacteria tested on
Staphylococcus aureus bacteria where this
bacterium is one of the gram-positive bacteria that
often cause wound infection (Musdja et al 2017 ).
Table 2. Comparison of gambir quality that was used in
this research with gambir quality requirements of
National Standards of Indonesia (Standar Nasional
Indonesia : SNI 01-3391-2000)
Testing of gambir
extract
Quality
number 1
Quality
number 2
Gambir extract
for experiment
a. Physical condition :
shape
color
smell
b. Water content w/w
c. Ash content w/w
d d. d. Catechins
concentration w/w
of dry weight
e. Insoluble material
Intact
Yellow to
brownish
yellow
Specific
≤ 14%
≤ 5%
≥60%
Intact
Yellow brown
to yellow-
black
Specific
≤ 16%
≤ 5%
≥50%
Intact
Yellow to
brownish
yellow
Specific
4%
1.03 %
88.65%
content of :
water w/w of dry
weight
alcohol w/w of dry
weight
≤ 10%
≤ 15%
3.9%
8.6%
In addition, the presence of antibacterial activity
can suppress pathogenic bacteria and prevent the
growth of pathogenic bacteria in wounds so that
wound healing can be accelerated (Kaddoura et al
2017)
Catechins act as antibacterials by the mechanism
of binding to the peptide unit on the peptidoglycan
component of the cell wall. The occurrence of such
binding can disrupt the integrity of bacterial cell
walls and cause leaks in Gram-positive bacterial
cells (Pambayun et al, 2007)
Therefore, the presence of antibacterial activity
in catechins prevents the possibility of infection in
the event of injury. Moreover, catechins have
activity as an antioxidant that works by breaking the
lipid peroxidase chain that plays a role in free
radicals that can bind certain substances and harmful
to the body (Musdja et al , 2018) and can damage
three types of compounds that are important to
maintain cell integrity, namely: fat, especially
unsaturated fatty acids, which are important
components of cell membrane phospholipids; DNA,
is a genetic device of cells; protein, plays many
important roles such as enzymes, receptors,
antibodies, and cytoskeleton matrix formers
(Ambiyani and Winny, 2013) So the existence of
antioxidant activity in catechins can avoid more
severe cell damage.
After examination of gambir quality, catechin
isolates were formulated in gel preparation form.
The gel preparation was chosen because it has a
cooling, cooling, moisturizing, easy-to-use water
content, easy penetration to the skin, thus providing
a faster healing effect according to the base used. So
it is in accordance with the principle of the main
handling of minor burns that is cooling the burning
wound with water, where the gel content consists
mostly of water (Ansel, 2005). Observation of gel
preparation shown in Table
Tabel 3. Observation of Gel Preparations
Observation
Dose 1%
Dose 2%
Dose 4%
Color
Light brown
Brown
Brown
Form
Semisolid
transparent
Semisolid
transparent
Semisolid,
Not
transparent
Smell
Specific
Specific
Specific
Homogenity
Homogen
Specific
Specific
pH
6,51
6,12
5,76
Viscosity
43600
56400
73000
BROMO 2018 - Bromo Conference, Symposium on Natural Products and Biodiversity
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As the mechanism of action of positive control
containing 10% placenta extract is growing new
tissue and for healing wounds, while neomycin
sulfate 0.5% to prevent gram negative bacterial
infection in the wound area (Niknejad, 2013)
The formation of a scab indicates the process
of wound healing entering the early stage of
proliferation. To observe the formation of scab, in
the wound was seen a network of granulation
characterized by the appearance of a scab. This scab
serves to close the wound and prevent injury from
further contamination by microbes. The release of
scabs signifies the growth of new cells on the skin,
thus helping to accelerate the release of scabs and to
close the wound edges (Niknejad, 2013)
In the positive control group, the average scab
was formed on day 4 and off on day 11. In the
negative control group, the average scab was formed
on day 3 and off on day 14. In the low concentration
test group ( 1%), the average scab formed on the 2nd
day and off on the 11th day. In the medium
concentration test group (2%), the average scab was
formed on day 2 and off on day 12. In the group
high concentration test (4%), the average scab
formed on day 1 and off on day 14.
Table 4 Observation of Scab
Average on the day to
PC
NC
C1%
C2%
C4%
Scab
formation,
on days to
4
3
2
2
1
Remove
the scab,
on days to
11
14
11
12
14
Note:
PC = Positive Control, NC = Negative Control,
C1% = Concentration Test 1%
C2% = Concentration Test 2%, C4% = Concentration Test 4%,
Based on the observation of the formation of the
scab, it was obtained that the low concentration test
group (1%) had the potential to accelerate wound
healing time as the formation of the most rapidly
formed scab, ie on the 2nd day and released on the
11th day was almost close to the positive control
group compared to the concentration test group
medium (2%) and high concentration (4%) and
negative control. In high concentration tests (4%)
initially could accelerate drying in the wound area
but this drying triggers the formation of scab or dead
tissue that was very hard and thick and attached
tightly to the surface of the wound. This dead tissue
could inhibit the distribution of the active substance
and the absorption of the drug so that the wound
lasts longer. The duration of the process of
formation of new tissue resulted in the length of the
healing period. Therefore the high concentration test
group (4%) had the longest peeling time. In addition,
it could be observed that the negative control group
undergoes a long wound healing process seen from
the time of formation of the scab and the time of loss
of the scab. This matter showed that gel base alone
did not affect the acceleration of wound healing.
The area of the initial injury to the width of the
wound the day after the wound was made and the
extent of the final wound was the area of the wound
on the day of observation.
The area of the initial wound to the calculation of
the percentage of wound healing was the area of the
wound the day after the rat was injured, after 24
hours wound stability occurs. A wound can be said
to be healed if the wound area had undergone
epithelialization thoroughly and no longer requires
treatment. The result of measurement of the
reduction of burn area on all treatment groups on the
1st day until the 21st day using Akhoondinasab
injection method (Akhoondinasab, 2014) as shown s
in Table 5 and Figure 1.
Giving gambir catechins gel with various
concentration levels (1%, 2% and 4%) had an effect
on time and percentage of burn wound healing. The
highest percentage of reduction of burn wound area
(in Cm
2
) on 8th day was in positive control
(59.60%) followed by medium concentration (2%)
was 44.02%. Based on statistical test of medium
concentration test (2%) was significantly different
with high concentration test group (4%) and did not
significantly different with negative control, low
concentration test (1%) and positive control.
The highest percentage of reduction of burn
wound area on 15th day was obtained on positive
control (95,76%) followed by medium concentration
test group (2%) that was 88,32%. Statistical results
on the 15th day showed that the group of medium
concentration test (2%) was significantly different
with the high concentration test group (4%) and did
not significantly different with the low concentration
test group (1%), positive control and negative
control.
Based on the percentage of reduction of burn
wound area on the 21st day, the positive control
group showed the highest result (100%) followed by
medium-concentration (98.02%) and low
concentration test (97.87 %), negative control
(95,98%) and high concentration test (93,99%).
This suggests that the gambir catechins gel on the
Effects of Gambir (Uncaria gambir Roxb) Catechins on Burn Wound Healing in Male Rats
5
low concentration test (1%) and the middle
concentration test (2%) had high activity and were
almost equal to the positive controls in the
percentage of second degree burn wound healing.
However, statistically the percentage reducing of
burn wound area indicates that the data were
normal, but not homogeneously distributed so that
the data processing was followed by a non-
parametric Kruskal-Wallis test. The statistical data
of percentage reducing of burn wound area showed
not significantly different (p> 0.05) in all groups, as
shown in Table 5 and Figure 1.
Histopathological Observation was done by light
microscope descriptively, based on Figure 2, at 20
field of view with 400 x magnification.
Histopathologic observations preparations were
performed by scoring system. The scoring method
was done by using the Hosseini methods (Hosseini,
et al, 2011) as shown in Table 6 and Figure 2.
Table 5. Results of Measurement Reduction of Burn
Wound Area (in Cm
2
)
Figure 1. Percentage of Reduction of burn wound of
gambir catechins dose 1%, dose 2%, dose 4%, positive
control and negative control
The observations histopathology were done by
using light microscope (Olympus SZ61)
descriptively at 20 field of view with magnification
200 x and 400 x, as Shown in Figure 2.
Table 6. Results of Histopathology Assessment with
Scoring System
Group
Score
Neocapillari
zation
Infiltration of
inflame matory
cells
Positive
Control
3
4
Negative
Control
0
0
Consentration
test 1%
1
2
Consentration
test 2%
2
3
Consentration
test 4%
0
1
Neocapillary formation or neovascularization is
the formation of new blood vessels to the wound
area. Inflammation of inflammatory cells is a
process of inflammation of inflamed cells into the
injury site. (Prasetyo, 2010). From the scoring
results it can be observed that the highest
neocapillarization score was found in the positive
control group, followed by medium concentration
test (2%), low concentration test (1%), high
concentration test (4%) and negative control. The
highest inflammatory cell infiltration score was in
Days to :
1 day
8 days
15 days
21 days
Average
wound
area
Average
decreas
ed
wound
area
Average
percent
age (%)
wound
Average
decreased
wound
area
Average
percentage
(%) wound
Average
decreased
wound area
Average
percentage
(%) wound
Concentra
tion 1%
7,34
3,02 ±
0,86
41,14
5,90 ± 1,01
85,83
7,18 ± 0,77
97,87
Concentra
tion 2%
7,36
3,24 ±
1,39
44,02
6,50 ± 1,36
88,32
7,22 ± 1,55
98,02
Concentra
tion 4%
7,31
1,86 ±
0,72
22,44
5,09 ± 1,49
72,78
6,65 ± 0,97
93,99
Positive
Control
7,08
4,22 ±
1,23
59,60
6,78 ± 0,74
95,76
7,08 ± 0,38
100
Negative
Control
7,07
2,85 ±
1,01
40,24
5,73 ± 0,95
81,84
6,78 ± 1,05
95,54
BROMO 2018 - Bromo Conference, Symposium on Natural Products and Biodiversity
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the negative control group, followed by high
concentration test (4%), medium concentration test
(2%) and positive control.
From the results of microscopic observation, it
was found the presence of inflammatory cells in the
five groups. From the scores of inflammatory cell
infiltration parameters it was found that 2% gambir
catechins gel had the highest score after positive
control compared to the other test group. High
scores on inflammatory cell infiltration parameters
signify at least inflammatory cells. This was because
the catechins act as anti-inflammatory and
antibacterial while control positive contains
neomycin sulfate as an antibacterial so that the role
of inflammatory cells to phagocytes microbes can be
minimized and fast wound cleansing.
Table 7: Observation of Histopathology Scoring Reading
based on Hosseini method, (2011).
In contrast, the lowest scores were in the negative
group and the high concentration test (4%). Low
scoring of inflammatory cell infiltration parameters
signifies the number of inflammatory cells. This was
caused by the absence of active ingredients in the
preparation that could help to eliminate the foreign
particles so it was possible that microbial and tissue
damage must be phagocytized by the cells in the
wound area so that the inflammation rate was still
high. This suggests that inflammation and
phagocytosis were still occurring and indicate that
the two test groups were still in the inflammatory
phase.
In the neocapilarization parameter, the highest
scores were obtained in the medium concentration
test (2%) after positive control compared to the
other test groups. High scoring on neocapilarization
parameters showed an increase in the number of
neocapillaries that signaled the process of wound
healing in the proliferative phase.
The important process of cellular activity in this
phase is repair and heal wounds and was
characterized by cell proliferation (Hosseini et al,
2011). Moreover, inflammatory cell infiltration
scores in the moderate concentration test group (2%)
had high scores. This shows that in the medium
concentration test group (2%) has passed the
inflammatory phase and entered the proliferation
phase.
Group
Magnification
200x
400x
Positive
Control
Negative
Control
Consentration
Test 1%
Consentration
Test 2%
Consentration
Test 4%
Score
Inflammatory cells
Angiogenesis
0
13-15 inflammatory
cells per field of view
There is no
angiogenesis,
there is
congestion,
hemorrhagic and
edema
1
10-13 inflammatory
cells per field of view
1-2 blood vessels
per field of view,
there are edema,
hemorrhagic,
congestion
2
7-10 inflammatory
cells per field of view
3-4 blood vessels
per field of view,
there are edema,
hemorrhagic,
congestion
3
4-7 inflammatory
cells per field of view
5-6 blood vessels
per field of view,
there are edema,
hemorrhagic,
congestion
4
1-4 inflammatory
cells per field of view
More than 7 blood
vessels per field of
view, there are
edema,
hemorrhagic,
congestion
Effects of Gambir (Uncaria gambir Roxb) Catechins on Burn Wound Healing in Male Rats
7
Figure 2: Result of Observation of Histopathology of
white rats skin tissue with Hematoxylin-Eosin staining at
200x and 400x magnifications
Note:
Black arrow : Inflammatory cells
Blue arrow : Neocapillarization
From the analysis of all data, it can be concluded
that the activity of gambir catechins in healing
process of second degree burn did not show
significant result on decreasing of burn area and
percentage of wound healing. However, the activity
of catechin isolates of gambir has affects the
healingof burns in the inflammatory phase and
proliferative phases. This was seen in
histopathologic images. where in inflammatory cell,
the medium concentration test group (2%) could
decrease the number of inflammatory cells
compared to the low concentration test group (1%),
high concentration test (4%) and negative control.
This was because gambir catechins have activity as
anti-inflammatory and antibacterial. (Musdja et al
2017, Musdja et al 2018). The existence of these
compounds would indirectly decrease the
stimulation of inflammatory cell migration to the
wound area so as to reduce the number of
inflammatory cells and the process of clearance of
foreign substances can run faster Hosseini et al,
2011). Thus, the moderate concentration test group
(2%) may affect the healing of burns in the
inflammatory phase.
In the neocapillarization parameter, the moderate
concentration test group (2%) showed a higher score
than the low concentration test group (1%), high
concentration test (4%) and negative control. In the
process of tissue repair, the presence of blood
vessels had an important role to provide nutrient
intake for tissue that was regenerating. In addition,
blood vessels also had a role to deliver inflammatory
cells formed in the marrow to close the wounded
tissue so that the inflammatory cells to emigrate. To
support these functions, blood vessels would form
new vascular shoots that will eventually develop into
a new branching on the wound tissue or called
neokapilerisasi (Hananeh et al 2015). Thus, the
number of new blood vessels in the injury site in the
medium concentration test group (2%) indicates that
the wound healing process had proceeded in the
proliferation phase. (Eva et al, 2014)
Anatomic and histopathology observations
showed differences between groups. This difference
explains that in each gel preparation group had a
different work force. The working strength of the gel
preparation was influenced by the active ingredient
content of each gel and the concentration of isolates
that affect its activity both in the inflammatory
phase, the proliferation phase and the maturation
phase. In general, the moderate concentration test
group (2%) showed better results than the low
concentration test group (1%) and the high
concentration test group (4%). This is in line with
the research conducted by Sumoza et al. (2014)
where in the study of Gambir's Influence on Healing
Burns on white mice showed good results in
moderate concentrations.
In the medium concentration test group (2%)
showed the best results microscopically followed by
low concentration test group (1%) and high
concentration test group (4%). However, in the high
concentration test group (4%) showed unsatisfactory
results. This was probably due to the low
concentration of 1% gambir catechins gel having the
active ingredient content below the optimum dose so
that although it diffuses well but the active
ingredient content was not sufficient for wound
healing, medium concentration (2%) had the active
ingredient content in the range optimal dosage for
wound healing while gambir catechins gel with high
concentration (4%) was above the optimal dose for
wound healing. This causes the high concentration
of 4% gambir catechins gel to have high viscosity
and cause the gel to be too thick resulting in the
release of the active substance and the penetration
slowing into the skin.
4. CONCLUSION
Gambir Catechins (Uncaria gambit, Roxb) on
the concentration group of 1%, 2%, 4%, control
positive and control negative did not significantly
different (p>0,05) in reducing the surface area on
second degree burn wound which was given
topically on anatomical pathology observation.
There were differences in infiltration of
inflammatory cells and neocapillarization on day 7
in the 2% concentration test compared with the 1%
concentration test , 4% concentration test and
negative control on microscopic observation, where
the medium concentration group (2%) was better
than low concentration test group (1%) high
concentration test group (4%) of gambir catechins
and negative control.
Gambir catechins could assist in the healing
process of burns in the inflammatory phase and
proliferation.
BROMO 2018 - Bromo Conference, Symposium on Natural Products and Biodiversity
8
ACKNOWLEDGEMENTS
We would like to thank to team of
Histopathology, Faculty of Medicine, University of
Indonesia for their help in preparation and
interpretation of Histopathology in this research
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