Hindawi
International Journal of Medicinal Chemistry
Volume 2019, Article ID 7105834, 10 pages
https://doi.org/10.1155/2019/7105834
Research Article
Hair Growth Promoting Effect of Dicerocaryum senecioides
Phytochemicals
H. Rambwawasvika
, P. Dzomba
, and L. Gwatidzo
Department of Chemistry, Faculty of Science, Bindura University of Science Education, P. Bag 1020, Bindura, Zimbabwe
Correspondence should be addressed to P. Dzomba; pdzomba@gmail.com
Received 20 July 2019; Revised 26 October 2019; Accepted 7 November 2019; Published 12 December 2019
Academic Editor: Benedetto Natalini
Copyright © 2019 H. Rambwawasvika et al. This is an open access article distributed under the Creative Commons Attribution
License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly
cited.
Phytochemicals from Dicerocaryum senecioides were studied for hair rejuvenation activity using BalB/c mice. Solvent extractions and
thin layer chromatography (TLC) were used to extract and isolate the phytochemicals respectively. Phytochemicals were identified by
spraying with target-specific revealing reagents. In vivo hair growth stimulating activity for each extract was tested on denuded dorsal
skin of 5-week old BalB/c mice against the controls and the standard drug minoxidil. The parameters used to evaluate hair growth were
hair growth completion time, hair length, hair weight, hair follicle length, and relative hair follicle area. The identified phytochemicals
from the active ethanol extract were steroidal glycosides, triterpenoid glycosides, and flavonoid glycosides. Flavonoid glycosides
treatment had the uppermost hair rejuvenation capacity as measured by the shortest hair growth completion time (19 days) versus
control (29 days) and longest hair length (11.04 mm and 11.86 mm for male and female mice respectively while the control group had
5.15 mm for male mice and 5.33 mm for female mice). Hair growth stimulation by flavonoid glycosides was also dependent on dose
concentration. It can be concluded from this study that flavonoid glycosides extracted from the leaves of Dicerocaryum senecioides
have remarkable hair rejuvenation capacity in BalB/c mice. The present results provides insights on the use of Dicerocaryum senecioides
for hair rejuvenation in traditional practices and on the potential of the plant as a source of novel compounds that can be used as hair
growth promoters.
1. Introduction
Hair plays a significant role in people’s psychosocial life and
anything which negatively affect its appearance will be directly
reducing the quality of life for the patients. Hair style is a
cultural symbol for expressing one’s religion, beauty, wealth,
or power, as such involuntary hair loss is a great threat to
human social life. Although regarded not life threatening,
alopecia is a serious dermatological disorders which can
severely affect social status of people. Society has its own
perception on people’s hair style or lack thereof. The perception
can even lead to people diagnosing each other for diseases
such as kwashiorkor in children, HIV infection, or cancer in
adults [1, 2]. In order to fit in and gain social acceptance, a lot
is done to keep one’s hair impressive. The extent of this impact
can be measured by the fact that every year in the United States
of America, around 60 million individuals spend roughly
$US1.5 billion on hair regrowth medicines [3]. The complicated
process of hair growth constitute 3 cyclic phases which are
regeneration phase (anagen), relapse phase (catagen), and rest
phase (telogen). A normal healthful scalp will be having an
average of 100,000 hairs, 90% of which will be in the rapid
growth phase (anagen) at a time.
Hair loss emanate from many factors such as old age,
genetic predisposition, thyroid imbalance, undernourishment
or wrong diet, chronic infections, hormonal effects of family
planning pills, physiological processes such as pregnancy, certain drugs, and chemotherapy targeting cancer cells [4, 5]. In
some cases hair loss can be temporary but a hormonal and
genetic predisposition condition like androgenic alopecia is
usually permanent. Currently such conditions are treated but
cannot be cured. In an attempt to counter the deleterious
effects of hair loss on the health and self-esteem of people, a
wide range of natural, and synthetic products have been tried.
Some of the tried products reveal side effects while others lack
effectiveness on some patients. This motivates the continuous
2
need to search for new and safer alternatives with improved
efficacy. Herbal products have proved over the past years to
offer safer and environmentally friendlier medicines compared
to synthetic ones and they are worthy trying in the treatment
of alopecia.
There are only two approved drugs for alopecia by the
Food Drug Administration (FDA), minoxidil (Rogaine), and
finasteride (Propecia) [6]. Both drugs are effective however
they are not enough to meet the growing need of alopecia
remedies both in men and women. Topical minoxidil has generally been considered a safe application with very rare side
effects which normally disappear upon stopping medication
[7]. Oral finasteride worked effectively against male pattern
baldness. Few reports of mild sexual related problems such as
irregular ejaculation, lower sperm volume, and poor sexual
performance which normally subside upon discontinuation
of treatment were observed on clinical trials [8, 9]. Considering
that both finasteride (a dihydrotestosterone-suppressing 5a-reductase inhibitor) and minoxidil (an antihypertensive potassium channel opener) are products of serendipity [6], more
focus should be given in an attempt to design drugs of specific
pharmacological action against hair loss.
Mice hair follicles are synonymous to that of human beings
with respect to essential features of organization and function.
Several authors established follicular similarities on mice and
human beings. Apart from cell type similarities, both follicles
experience repetitive cyclic hair growth [10, 11]. Murine are
also useful as a preindicator of possible toxicity or irritation
of potential medicines. Consequently, preclinical research to
understand human hair biology can be done on mice prior to
undertaking clinical trials. It is paramount, however, for a
researcher to understand hair growth cycle patterns of rodents
before selection. Synchronized hair growth in rodents is only
when the rodents are young, thereafter numerous hair cycle
patterns come into play, each with a different regeneration
rhythm [12, 13]. Thus it will be difficult to have all the hair
follicles in the same growth phase at any time after the completion of the first hair growth cycle. Physiological events such
as lactation and pregnancy can also alter the domain patterns
on rodents. This research made use of 5 weeks old BalB/c mice
whose dorsal hair was in the late telogen stage of growth to
examine the potential of the leaf extract of Dicerocaryum senecioides for hair growth stimulation . The same animal model
was also used in previous studies [14].
Dicerocaryum senecioides is a common herb in
Zimbabwean ethnobotany popularly used as a soap substitute,
a relish, and to facilitate the removal of trapped placenta in
cattle. The herb is also popularly used to stimulate hair growth
in alopecia cases although the claim has not yet been established scientifically. A viscous fluid obtained when the herb’s
leaves are macerated in water is responsible for all the ethnopharmacological uses. The aqueous extract of the herb’s conspecific, Dicerocaryum zangubaricum was shown to contain
many sugars such as galactose, xylose, arabinose, and mannose
[15, 16]. Laboratory studies of the plant have also shown to be
a reliable source of medicinal antioxidants [17–19]. Studies
done by Chokoe [17], Rambwawasvika et al. [20] revealed that
the plant extract has antimicrobial properties against some
fungi and bacteria. Phytochemical profiling of the leaf extract
International Journal of Medicinal Chemistry
done by Rambwawasvika et al. [20] revealed the presence of
many phytochemicals including phenolic compounds, flavonoids, alkaloids, glycosides, terpenoids, and steroids. In this
study active phytochemicals from Dicerocaryum senecioides
leaf extract were isolated and tested in vivo for hair growth
stimulation on mice against 2% minoxidil standard and blank
controls in an attempt to scientifically test the hair growth
stimulation claims of the herbal extracts.
2. Materials and Methods
2.1. Materials and Chemicals. Standard drug 2% minoxidil
supplied by McNeil Products Limited, UK was purchased
from a local retail pharmacy. Analytical grade reagents
supplied by Merck Germany were used to prepare
reagents and solutions. Thin Layer Chromatography plates
(ALUGRAM® SIL G/UV254) and preparative glass coated
TLC plates (60F254, 20 × 20 cm) were also supplied by Merck
(German).
2.2. Plant Material Collection. Wet leaves of the plant
Dicerocaryum senecioides were harvested in the summer
season around Bulawayo city in Zimbabwe. Identification
and authentication was done by the Harare Botanical garden
and the herb voucher specimens 2017/5 was kept for future
reference in the Bindura University of Science Education,
chemistry laboratory.
2.3. Extraction and Fractionation of Plant Material. The
leaves of Dicerocaryum senecioides were dried under roof by
spreading them on thin sheets of stainless steel in the chemistry
laboratory bench tops. The dry leaves were powdered using
a laboratory blender. The ground plant leaves (100 g) were
extracted exhaustively with absolute ethanol (1000 mL) by
shaking for 12 hours on a laboratory shaker. The residue
from the extract was removed by filtration using a mutton
cloth first and then using Whatman No. 1 filter paper. The
extraction process was repeated 3 times with fresh ethanol
solvents. The collected supernatants were pooled together for
concentration on a rotary evaporator (RE-200) from Xi’an
Heb Biotechnology Co., Ltd., China. The solid obtained was
resuspended in ethanol: water (60 : 40, v/v) and sonicated
to facilitate solubility. The suspension was transferred to a
separating funnel and an equal volume of hexane was added
followed by a careful thorough shaking. Two fractions, the
hexane (D1) and aqueous (D2) were obtained and separated.
The extraction process was repeated 3 times with fresh hexane
portions before the extracts were concentrated by rotary
evaporation. Dried extracts were then kept in amber bottles
at 4°C until required for use.
2.4. Thin Layer Chromatography (TLC) and Phytochemical
Tests. The D1 and D2 extracts were subjected to analytical Thin
Layer Chromatography (TLC) for separation and qualitative
detection of phytochemicals. Crude extract solutions of 10 mg/
mL were prepared by redissolving the extracts in their respective solvents for chromatographic separation. The extracts were
spotted on 5 × 10 cm ALUGRAM® Xtra SIL G/UV254 TLC plates
International Journal of Medicinal Chemistry
3
using a spotting capillary. The plates were then subjected to
various solvent systems for separation of phytochemicals. The
D1 TLC chromatogram was developed using solvent system
hexane; ethyl acetate; acetic acid (HEA, 50 : 40 : 10, v/v/v). The
polar fraction (D2) was successfully separated using the solvent system ethyl acetate; methanol; water (EMW, 10 : 2 : 1.5,
v/v/v). Detection of flavonoids was done by spraying the TLC
plates with 1% AlCl3 in ethanol according to the method of
[21, 22]. Triterpenoids and steroids were revealed by spraying
with Liebermann-Burchard’s reagent according to the method
adopted from [23, 24].The developed plates were viewed on UV
viewer cabin at 366 nm for characteristic florescence and 𝑅𝑓
values determined. Glycosides were detected using the method
described by [25].
Retention factor (𝑅𝑓) values are calculated using the following formula,
𝑅𝑓 =
Distance moved by extract
.
Distance moved by solvent
(1)
The extracts were then subjected to preparative TLC for the
isolation of identified phytochemicals. Same solvent systems
were used to develop the chromatograms on glass backed silica
gel coated TLC plates (60F254, 20 × 20 cm). The developed
plates were then dried under fan to allow all the solvents to
evaporate. The plates were developed over a distance of 12 cm
using similar solvent systems as used for analytical TLC.
Different bands were individually scratched off into clean
labelled beakers and redissolved in respective extracting solvents. The contents were thoroughly shaken and the silica
removed by centrifugation for 10 minutes at 2500 rpm followed by vacuum filtration with Whatman No. 1 filter paper.
The supernatants of the extracts were put in preweighed Petri
dishes and the solvent was allowed to evaporate under a fume
extractor until a constant solid mass was obtained. Further
analytical TLC to check purity was conducted and the dry
extracts were kept in amber bottles under refrigeration.
2.5. Experimental Animals. Healthy BalB/c mice (18−20 g)
were purchased from the department of livestock and
veterinary services animal unit section. The conduct and care
for animals was approved by the country’s division of veterinary
services (Department of livestock and veterinary services)
for animal research conduct and performed in compliance
with guidelines of Bindura University of Science Education’s
Ethical Research Committee for the use of laboratory animals.
The animals were housed at the Astra campus’ laboratory in
spacious polypropylene cages. Bedding for the animals was
made from wood shavings which were replaced every week.
Proper ventilation and experimental conditions of an ambient
temperature of 25 ± 2°C and 12 hour light/dark cycles were
maintained throughout the experimental period. A normal
feeding with standard pellet and water was maintained
throughout the experiment (ad libitum). No experiment was
done in the first week to allow the animals to familiarize and
adjust to the environment.
2.6. Dosage Preparation. Dosages for topical application were
made by dissolving the solid isolated phytochemicals in 99%
ethanol. A concentration of 200 µg/mL was maintained for
each extract except when testing for the effect of concentration
dose on hair growth. A small laboratory blender was used
to achieve uniform concentrations of extract solutions before
treatments.
2.7. In Vivo Determination of Hair Growth. For the experiment,
the animals were indiscriminately separated into six groups
of (𝑛 = 10 consisting of 5 males and 5 females, Figure 1) and
treated as indicated in Table 1. The mice’s dorsal hair covering
an area of 4 cm2 were shaved using an electric shaver a day
before the experiment Figure 1(a). Hair removal cream bought
from a local pharmacy was smeared on the shaved portion to
completely eliminate all hairs. Special care was taken to avoid
damaging the denude skin. Putting the hair growth circle into
consideration the tests were topically applied on the 5th week
targeting the second telogen phase.
2.8. Qualitative Studies on Hair Growth. The minimum time
taken before visible hair growth on the shaven skin and the
minimum time taken to completely grow new hair on the
denude skin were the parameters used for qualitative hair
rejuvenation studies. These were achieved by visual observation
and the times were noted for each treatment group of mice.
2.9. Determination of Hair Length. Hairs were pulled
indiscriminately from the previously hairless region of all
mice in a group. The average length of the randomly selected
20 hairs was measured and the result noted as the mean length
± standard deviation (SD) of 20 hairs. Length measurements
were done after 14 and 21 days of treatment.
2.10. Determination of Hair Weight. Hair weight measurements
were done at the end of 21 days of treatments. The mice were
killed by physical dislocation and a one square centimeter
portion of the previously shaved skin region was cut from the
same position in all mice. Skin weight with and without hair
was determined using an analytical balance. The differences in
weight was recorded as the net weight of the new regrown hair.
2.11. Determination of Hair Follicle Length and Area. The
response of mice follicles to topical application of
phytochemicals was done after 21 days of topical application
with extracts and controls. New grown hairs were randomly
tugged from the once shaved portion of all mice in each group
using a pair of high-grip forceps. Hair follicles were viewed
and microscopic photographs (magnification 400) were used
to determine follicle length. Obtained photographs were used
to determine the relative area of follicles. Results were recorded
as mean ± SD of 10 strands for each treatment.
2.12. Effect of Flavonoid Concentration Dose on Hair
Growth. Male mice were put in 6 different groups (5 per
group) and their dorsal hair denuded. Each group of mice
was subjected to daily topical application of a constant
concentration for 21 days. Hair length was measured
at day 14 and 21 to determine the response to different
concentration doses. The concentrations made were 1000,
500, 200, 100, 50, and 25 µg/mL. Fresh doses were prepared
for each application.
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International Journal of Medicinal Chemistry
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
(l)
Figure 1: (a and b) Mice at the beginning of the experiment, (c and d) control consisting of ethanol only, (e and f) control consisting of 2%
minoxidil, (g and h) experiment consisting of flavonoid glycoside, (i and j) experiment consisting of steroidal glycosides, (k and l) experiment
consisting of triterpenoid glycosides after 21 days.
2.13. Statistical Analysis of Data. Experimental results were
stated as mean values ± SD of the mean. Levels of statistical
significance were calculated using the Student’s t-test when
comparing values against the control, 𝑃 < 0.05 was considered
to be significantly different.
3. Results
3.1. Phytochemical Analysis. TLC chromatograms of
flavonoids glycosides, triterpenoid glycosides, and steroidal
glycosides were seen as blue, brown, and red luminous zones
International Journal of Medicinal Chemistry
Table 1: Groups of rats for the experiment.
Group
1
2
3
4
5
6
Treatment
Shaved and no chemical applied
Shaved and treated with ethanol only
Shaved and treated with standard 1 mL of 2%
minoxidil ethanolic solution
Shaved and treated with vehicle + flavonoid glycosides
Shaved and treated with vehicle + steroidal glycosides
Shaved and treated with vehicle + triterpenoid
glycosides
Table 2: Identity of compounds, calculated 𝑅𝑓 values, and the
systemic mobile phases used on TLC.
Compound
Flavonoid glycosides
Steroidal glycosides
Triterpenoids
glycosides
Extract
𝑅𝑓 values
D2
D2
D2
D2
D2
D2
D2
0.125
0.313
0.375
0.425
0.500
0.650
0.850
D1
0.875
TLC mobile phase
EMW, 10 : 2 : 0.5,
(v/v/v)
EMW, 10 : 2 : 0.5,
(v/v/v)
EMW, 10 : 2 : 0.5,
(v/v/v)
HEA, 50 : 40 : 10,
(v/v/v)
in the long wavelength before spraying with revealing agents.
Spraying with revealing reagents enabled the identification of
the phytochemicals and the subsequent calculation of their 𝑅𝑓
values (Table 2).
Phytochemical analysis revealed the presents of steroidal
glycosides, triterpenoid glycosides, and flavonoid glycosides
as the major constituents in the ethanol extract of Dicerocaryum
senecioides leaves. Hexane extract (D1) had one major compound which was shown to be a triterpenoid glycoside while
the polar extract (D2) revealed the presence of all the 3 phytochemicals (Figure 2).
3.2. Qualitative Evaluation of In Vivo Hair Growth. The
minimum time taken before visible hair growth on the
shaven skin and the minimum time taken to completely grow
new hair on the denude skin were observed physically and
selected results are shown in Figures 1(a)–1(l). Treatment
with flavonoid glycosides resulted in the shortest hair growth
starting time and hair growth completion time (Table 3 and
Figures 1(g) and 1(h)). Treatment with flavonoid glycosides
reduced the time for hair growth completion by 10 days while
the standard 2% minoxidil (Figures 1(e) and 1(f)) reduced the
duration by 7 days. The initial time taken for noticeable hair
regrowth was reduced by 3 days for both 2% minoxidil and
flavonoid glycosides.
3.3. Determination of Hair Length. Mice treated with flavonoid
glycosides extract showed the longest length of 11.70 ± 0.24 mm
for male mice and 11.81 ± 0.23 mm for female mice after 21
days of treatment (Figure 3). The performance was higher
than both the controls and the standard drug (2% standard
5
minoxidil). Formulations with phytochemicals steroidal
glycosides and terpenoid glycosides treatments had their
lengths above the controls but less than that of 2% minoxidil.
3.4. Determination of Hair Weight. As with length, the weight
of hair from the mice treated with flavonoid glycoside extract
was more than the weight of both controls and the standard.
Mice treated with flavonoid glycosides extract had hair weight
of 56.61 ± 1.30 mg and 54.44 ± 2.52 mg for male and female
mice respectively while those treated with standard minoxidil
drug had a weight of 53.34 ± 1.72 mg and 51.81 ± 1.36 mg
for male and female mice respectively. Groups treated with
steroidal glycosides and triterpenoid glycosides had hair
weight less than that of the standard drug (Figure 4).
3.5. Effect of Application on Follicle Length, Width, and Relative
Area. The lengths and widths of follicles were greatest for the
mice treated with flavonoid glycosides further identifying
flavonoid glycosides as the most bioactive phytochemicals.
Images of follicles from the treated mice were used to estimate
the area of the hair follicles relative to the controls (Figure
5). Sampled microscope photographs are shown in Figure 6.
The obtained results confirmed that the flavonoid glycosides
extract as the most effective in causing hair growth as measured
by follicle area. The performance of flavonoid glycoside extract
was higher than that of the control drug minoxidil while that
of steroidal glycosides and triterpenoid glycosides were lower
(Table 4). No difference was observed on the performance of
steroidal glycosides and triterpenoid glycosides.
3.6. Effect of Flavonoid Concentration Dose on Hair Growth. The
results of varied concentrations on hair growth at 14 and 21
days indicated that mice hair growth was dependent on the
concentration of flavonoid glycosides. An increase in dose
concentration to 100 µg/mL was accompanied by an increase
in hair length (Figure 7). A further increase concentration
above 100 µg/mL did not result in a further increase in hair
length.
3.7. Toxicity Studies. Although D. senecioides leaves are a
common relish, investigations to determine the toxicity
on mice were done before the experiment commenced. A
concentration of 200 mg/mL of crude extract were applied
on shaved mice and visual observations were made for any
lethal reactions or erythema on skin surface for a total period
of 72 hours after the topical applications. The observations
warranted ethanol extracts of D. senecioides as safe for topical
application.
4. Discussion
Extractable phytochemicals have proven to be an excellent
source of medication for many ailments. Plant extract derived
medication is usually associated with fewer side effects in the
body and lower production cost [26]. In this study, flavonoid
glycosides extracted from Dicerocaryum senecioides have
proven to be a strong hair growth stimulant when tested
in vivo on BalB/c mice. Results obtained after 21 days of topical
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International Journal of Medicinal Chemistry
EMW
EMW
HEA
Tritepenoids
Tritepenoids
Steroids
Flavonoids
D2
D1
D2
(b)
(a)
(c)
Figure 2: Analytical TLC chromatograms for the two fractions D1 (nonpolar) developed by solvent system HEA and D2 (polar) developed
by solvent systems EMW after spraying with revealing agents for the detection of phytochemicals.
Table 3: Hair growth initiation and completion time of mice after receiving different treatments.
No treatment
Vehicle only
Steroidal glycosides
8
8
6
6
5
5
29
29
24
23
19
21
Hair growth
initiation/day
Hair growth
completion time/day
Triterpenoid glycosides Flavonoid glycosides
Minoxidil
15
15
∗∗∗
10
∗∗
∗∗∗
∗∗
∗∗
∗∗∗
∗∗
5
Length of hair (mm)
Length of hair (mm)
∗∗∗
∗∗∗
10
∗∗
∗∗∗
∗
∗∗∗ ∗∗∗
∗
∗
5
0
0
Day 14
Day 14
Day 21
Day 21
Days
Days
Treatments
Treatments
No treatment
Vehicle only
Steroidal glycosides
Triterpenoid glycosides
2% Minoxidil
Flavonoid glycosides
(a)
No treatment
Vehicle only
Steroidal glycosides
Triterpenoid glycosides
2% Minoxidil
Flavonoid glycosides
(b)
Figure 3: Length of hair on experimental groups after 14 and 21 days of treatment with extracts and 2% minoxidil drug ((a) male; (b) female).
∗
∗∗
∗∗∗
Results are shown as mean values ± SD. 𝑃 < 0.05, 𝑃 < 0.01,
𝑃 < 0.001 compared with no treatment control group.
application with separated phytochemicals show significant
hair growth in the group of mice treated with flavonoid
glycosides compared to other phytochemicals as well as blank
control (𝑃 < 0.01) Figures 1(a)–1(l). The performance of
flavonoid glycosides was also significantly greater than that of
the standard drug minoxidil (Figures 3–5). Apart from a
visible increased hair length above the controls and the
standard drug (Figure 3), the group of mice treated with
flavonoid glycosides had heavier hair (Figure 4) as well as the
biggest follicle size (Figures 5 and 6) after 21 days of receiving
treatment. Hair growth was fast in female mice compared to
their male counterparts basing on the measured parameters.
International Journal of Medicinal Chemistry
7
80
Weight (mg/cm2)
60
∗∗
∗
∗∗∗
∗∗∗
∗
∗
∗∗∗
∗∗∗
40
20
0
Male
Female
Groups
Treatments
No treatemet
Ethanol only
Steroidal glycosides
Triterpenoid glycosides
2% Minoxidil solution
Flavonoid glycosides
Figure 4: Hair weight measurements after treatment with
phytochemical extracts of Dicerocaryum senecioides, controls, and
2% minoxidil after 21 days of treatment. Results are graphed as mean
values ± SD. ∗ 𝑃 < 0.05, ∗∗ 𝑃 < 0.01, ∗∗∗ 𝑃 < 0.001 compared with no
treatment control group (𝑛 = 10).
If the diverse forms of alopecia are to be put into consideration, flavonoid glycoside extract has potential therapeutic
effect on nonhormonal forms such as chemotherapy induced
alopecia, traction alopecia, anagen effluvium, telogen effluvium, and some forms of nonhormonal alopecia areata. The
extract is yet to be tested for the treatment of androgenic alopecia as the mice model used for tests in this study did not
address the condition. Androgenic alopecia results from a
combination of genetic predisposition and an androgen called
dihydrotestosterone generated from the metabolism of testosterone [8]. The condition affects both male and female but
affect males mostly because of the high levels of testosterone
in males. Testing for the extract’s effect on androgenic alopecia
will require other animal models like stump tailed macaque
which develop similar scalp baldness due to the generation of
androgens in its body [9, 27].
Positive identification of flavonoids on TLC was done by
spraying with ethanolic aluminum chloride reagent. A
sparkling bluish to yellow color characterized flavonoids
(Figure 2). The observed chromatograms were correlating with
the findings of [28]. Other prominent phytochemicals,
steroidal glycosides, and triterpenoid glycosides in the ethanol
extract also significantly stimulate hair growth when compared
to the negative controls however their performance was
significantly lower than that of flavonoid glycosides and the
standard drug minoxidil (𝑃 < 0.05). Further studies are
needed to establish whether their structure does not contain
part of the active phytochemical found abundantly in flavonoid
glycosides. There was no major difference between the blank
control group and the ethanol only group indicating that the
extracting solvent has no influence in the physiology of hair
growth.
Following the establishment that mice hair cycle is synonymous to that of human with the exception of specialized
follicles and a shorter hair growth cycle [29], BalB/c mice were
chosen for this study. The same type of mice were also used
by [14] in a similar study. Treatment on mice was commenced
at the age of 5 weeks to target the late telogen stage were hair
follicles are miniaturized and therefore cannot actively grow.
Thus any positive hair growth on denuded mice is less attributed to the natural mice hair growth cycle but the treatment
which triggers a transformation into the anagen, which is the
active hair growth phase. After the first treatment, no mice
were not subjected to the second treatment because the second
hair growth in mice is not synchronized as not all hairs will
be in the same phase of growth [12]. Physiological processes
such as pregnancy and lactation were prevented during the
experimental period by keeping the male and female mice in
separate cages. Physiological processes such as pregnancy and
lactation are known to affect the synchronized hair growth
patterns [30].
Although mechanistic studies of how flavonoid glycosides
in D. senecioides promote hair growth are still underway, it is
important to discuss how other similar extracts have worked
to promote hair growth. Studies on D. senecioides extracts,
[17–19] investigated the anti-inflammatory and antioxidant
properties of the plant extracts. These properties are crucial
in triggering proliferation of hair follicle cells leading to hair
growth. Studies by [31] on hair growth promoting effects of
antioxidants and anti-inflammatory extracts of Rosemarinus
officinalis and Altheae officinalis supported the idea. The mechanism involves follicle stem cells resuscitation by the cleansing
removal of microinflammations which emerge from stress and
exposure to free radicals. Removal of microinflammations
results in cell viability and multiplication of follicle cells.
Having flavonoids as active hair growth stimulant is a double
blessing in that they are also very good antioxidants.
Antioxidants have been incorporated into cosmetic formulations for the intention to lessen the unfavorable impacts of
ultra violet (UV) radiation on hair fiber. Studies done by [32]
revealed that UV light damage hair development by targeting
melanin pigment and protein fractions.
This is not the first time when flavonoids from plant
extracts are shown to promote hair growth. Studies done by
[33, 34] on Ginkgo biloba, a plant known for its hair growth
activity was also shown to have flavonol glycosides phytochemicals in larger proportion. Antioxidants like flavonoids
are known to stimulate hair growth by causing muscle relaxation in blood vessels around hair follicles thereby facilitating
a constant supply of blood with nutrients to the hair follicles
cells. A conducive environment for hair regrowth is set by
providing decent food nutrients without toxins. On the off
chance that these prerequisites are not satisfied, the follicles
stays in the dormant resting stage of the hair cycle. The activity
of these flavonoid glycosides can also be attributed to their
saponification value where the cleansing action is responsible
for sloughing of dead skin leading to the opening of scalp
pores. This stimulates the hair root and accelerates the conversion of the telogen to anagen stage of hair development.
This will enable blood capillaries carrying nutrients and
8
International Journal of Medicinal Chemistry
8
300
Length (mm)
100
∗∗∗
∗∗∗
200
Relative follicle area
∗∗∗
∗∗∗
∗∗∗ ∗∗∗
∗∗∗ ∗∗∗
Male
Female
∗∗∗
6
∗∗∗
∗∗∗
∗∗∗
4
∗∗∗ ∗∗∗
∗∗∗ ∗∗∗
2
0
0
Male
Female
Groups
Groups
Treatments
Treatments
Triterpenoid glycosides
2% Minoxidil solution
Flavonoid glycosides
No treatment
Vehicle only
Steroidal glycosides
Triterpenoid glycosides
2% Minoxidil solution
Flavonoid glycosides
No treatment
Vehicle only
Steroidal glycosides
(a)
(b)
Figure 5: Hair follicle response to different treatments. (a) Hair follicle length measurements, (b) estimated relative follicle area. Results are
graphed as mean values ± SD.
10 µm
10 µm
(a)
(b)
10 µm
(c)
Figure 6: Microscopic images of hair follicles at a magnification of ×400. (a) Image of control untreated, (b) treated with standard 2% minoxidil
drug, and (c) treated with flavonoid glycosides extract.
Table 4: Effect of application on relative hair follicle area.
Group
Treatment administered to animals
Relative area of hair follicle
Male
Female
1 ± 0.15
1.08 ± 0.20
1.10 ± 0.20
1.12 ± 0.28
A
B
C
No treatment
Ethanol only
2% Minoxidil solution
3.84 ± 0.29
D
Flavonoid glycosides
4.25 ± 0.18
E
F
Steroidal glycosides
Triterpenoid glycosides
∗∗∗
∗∗∗
∗∗∗
1.80 ± 0.16
∗∗∗
∗∗∗
3.96 ± 0.33
∗∗∗
4.75 ± 0.29
∗∗∗
1.89 ± 0.22
∗∗∗
1.87 ± 0.18
1.93 ± 0.17
∗
∗∗
∗∗∗
Relative area of hair follicles compared to the standard non treatment group. Results are tabulated as mean values ± SD. 𝑃 < 0.05, 𝑃 < 0.01,
𝑃 < 0.001
compared with no treatment control group (𝑛 = 10).
International Journal of Medicinal Chemistry
References
Effect of dose concentration
15
Hair length (mm)
9
10
5
0
0
100
200
300
400
500
Concentration (µg/ml)
Length (Day 14)
Length (Day 21)
Figure 7: Effect of flavonoid glycoside concentration on mice hair
length. Hair length was measured at day 14 and day 21 of daily topical
application with flavonoid glycoside extract.
oxygen to reach follicle cells without much hindrances.
Research by [35, 36] suggest that flavonoids can also stimulate
hair growth by inhibiting the activity of type II 5α reductase
enzyme.
5. Conclusion
Flavonoid glycosides extracted from the leaves of Dicerocaryum
senecioides have exhibited remarkable hair growth stimulation
in mice in vivo. Its hair growth activity was found to be greater
than other phytochemicals and that of the standard drug, 2%
minoxidil. The extract facilitated anagen induction in telogen
follicles of BalB/c mice. The results indicated that flavonoid
glycosides from the plant are a promising source of lead compounds for alopecia medication. The activity of the extract on
mice was shown to increase with an increase in concentration
dose.
Data Availability
The data used to support the findings of this study are included
within the article.
Conflicts of Interest
The authors affirm no conflict of interest.
Acknowledgments
The authors are grateful to the Bindura University of Science
Education for the purchase of reagents and equipment. The
authors are also thankful to the Department of Livestock and
Veterinary Services animal unit section for the supply of mice
and granting the authority to use them in this research.
[1] M. Bjekić, “Diffuse hair loss in secondary syphilis in HIV
positive man: case report,” Scientific Journal of the Faculty of
Medicine in Niš, vol. 29, no. 4, pp. 193–197, 2012.
[2] I. C. V. D. de Sousa, “Simultaneous primary and secondary
syphilis associated with syphilitic alopecia and folliculitis in
an HIV positive patient,” Hair Therapy and Transplantation,
vol. 3, no. 108, 2013.
[3] V. M. Meidan and E. Touitou, “Treatments for androgenetic
alopecia and alopecia areata,” Drugs, vol. 61, no. 1, pp. 53–69,
2001.
[4] B. H. Lee, J. S. Lee, and Y. C. Kim, “Hair growth-promoting
effects of lavender oil in C57BL/6 mice,” Toxicological Research,
vol. 32, no. 2, pp. 103–108, 2016.
[5] P. K. Jain, D. Das, and C. Das, “Prospect of herbs as hair growth
potential,” Innovare Journals of Medical Sciences, vol. 5, no. 1,
pp. 25–33, 2017.
[6] R. Paus, “Therapeutic strategies for treating hair loss,” Drug
Discovery Today: Therapeutic Strategies, vol. 3, no. 1, pp. 101–110,
2006.
[7] A. Rossi, C. Cantisani, L. Melis, A. Iorio, E. Scali, and S. Calvieri,
“Minoxidil use in dermatology, side effects and recent patents,”
Recent Patents on Inflammation & Allergy Drug Discovery,
vol. 6, no. 2, pp. 130–136, 2012.
[8] A. Rossi, A. Anzalone, M. C. Fortuna et al., “Carlesimo
multi-therapies in androgenetic alopecia: review and clinical
experiences,” Dermatologic Therapy, vol. 29, no. 6, pp. 424–432,
2016.
[9] R. G. Damodaran and R. Gupta, “Hair loss and the applied
techniques for identification of novel hair growth promoters for
hair re-growth,” Pharmacognosy Journal, vol. 3, no. 22, pp. 1–5,
2011.
[10] Y. C. Hsu, L. Li, and E. Fuchs, “Emerging interactions between
skin stem cells and their niches,” Nature Medicine, vol. 20, no. 8,
pp. 847–856, 2014.
[11] M. Geyfman, M. V. Plikus, E. Treffeisen, B. Andersen, and
R. Paus, “Resting no more: re-defining telogen, the maintenance
stage of the hair growth cycle,” Biological Reviews, vol. 90, no. 4,
pp. 1179–1196, 2015.
[12] M. Maekawa, T. Ohnishi, S. Balan et al., “Thiosulfate promotes
hair growth in mouse model,” Bioscience, Biotechnology, and
Biochemistry, vol. 83, no. 1, pp. 114–122, 2019.
[13] M. V. Plikus and C. M. Chuong, “Complex hair cycle domain
patterns and regenerative hair waves in living rodents,” Journal
of Investigative Dermatology, vol. 128, no. 5, pp. 1071–1080,
2008.
[14] J. I. Yoon, S. M. Al-Reza, and S. C. Kang, “Hair growth
promoting effect of Zizyphus jujuba essential oil,” Food and
Chemical Toxicology, vol. 48, no. 5, pp. 1350–1354, 2010.
[15] M. A. Benhura and M. Marume, “The mucilaginous
polysaccharide material isolated from ruredzo (Dicerocaryum
zanguebarium),” Food Chemistry, vol. 46, no. 1, pp. 7–11, 1993.
[16] G. Barone, M. M. Corsaro, M. Giannattasio, R. Lanzetta,
M. Moscariello, and M. Parrilli, “Structural investigation of
the polysaccharide fraction from the mucilage of Dicerocaryum
zanguebaricum Merr,” Carbohydrate Research, vol. 280, no. 1,
pp. 111–119, 1996.
[17] P. K. Chokoe, The Anti-Proliferative, Antioxidative and AntiInflammatory Properties of the D2 Fraction and HPLC Semi-
10
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
International Journal of Medicinal Chemistry
Purified Sub-Fractions of Dicerocaryum senecioides, University
of Limpopo (Turfloop campus), Mankweng, South Africa, 2011.
L. J. Mampuru, P. K. Chokoe, M. C. Madiga, A. Theron,
R. Anderson, and M. P. Mokgotho, “Antioxidant and
anti-proliferative capacity of a dichloromethane extract
of Dicerocaryum senecioides leaves,” “Phytochemicals as
nutraceuticals-global approaches to their role in nutrition and
health,” InTech, USA, 2012.
H. Rambwawasvika, C. T. Parekh, B. Naidoo, and H. Chiririwa,
“Extraction and characterisation of mucilage from the
herb Dicerocaryum senecioides and its use a potential hair
permanent,” International Journal of Applied Chemistry, vol. 13,
pp. 691–705, 2017.
H. Rambwawasvika, P. Dzomba, and L. Gwatidzo, “In vitro
study of phytochemical composition and antifungal activity of
Dicerocaryum senecioides leaf extract,” Pharmacologia, vol. 9,
pp. 137–143, 2018.
J. B. Harborne and C. A. Williams, “Advances in flavonoid
research since 1992,” Phytochemistry, vol. 55, no. 6, pp. 481–504,
2000.
M. Medić-Šarić, I. Jasprica, A. Smolčić-Bubalo, and A. Mornar,
“Optimization of chromatographic conditions in thin layer
chromatography of flavonoids and phenolic acids,” Croatica
Chemica Acta, vol. 77, no. 1-2, pp. 361–366, 2004.
P. M. Richardson, “Phytochemical methods: a guide to modern
techniques of plant analysis,” Brittonia, vol. 42, no. 2, pp. 115–115,
1990.
Q. Xiong, W. K. Wilson, and J. Pang, “The LiebermannBurchard reaction: sulfonation, desaturation, and rearrangment
of cholesterol in acid,” Lipids, vol. 42, no. 1, pp. 87–96, 2007.
N. Raaman, Phytochemical techniques, New India Publishing,
Delhi, India, 2006.
S. Patel, V. S. Sharma, N. Chauhan, M. Thakur, and V. K. Dixit,
“Hair growth: focus on herbal therapeutic agent,” Current Drug
Discovery Technologies, vol. 12, no. 1, pp. 21–42, 2015.
Z. Santos, P. Avci, and M. R. Hamblin, “Drug discovery for
alopecia: gone today, hair tomorrow,” Expert Opinion on Drug
Discovery, vol. 10, no. 3, pp. 269–292
M. E. Pascual, M. E. Carretero, K. V. Slowing, and A. Villar,
“Simplified screening by TLC of plant drugs,” Pharmaceutical
Biology, vol. 40, no. 2, pp. 139–143, 2002.
R. M. Porter, “Mouse models for human hair loss disorders,”
Journal of Anatomy, vol. 202, no. 1, pp. 125–131, 2003.
Y. Tamura, K. Takata, A. Eguchi, and Y. Kataoka, “In vivo
monitoring of hair cycle stages via bioluminescence imaging
of hair follicle NG2 cells,” Scientific Reports, vol. 8, no. 1, p. 393,
2018.
H. R. Ahmadi Ashtiani, F. Salehinia, H. Rastegar, A. A. Allameh,
and S. Rezazadeh, “Differences in growth response of human
hair follicle mesenchymal stem cells to herbal extracts and
a growth factor,” Journal of Medicinal Plants, vol. 1, no. 65,
p. 3546, 2018.
V. Signori, “Review of the current understanding of the effect of
ultraviolet and visible radiation on hair structure and options
for photoprotection,” International Journal of Cosmetic Science,
vol. 26, no. 4, pp. 219–219, 2004.
T. A. van Beek, “Chemical analysis of Ginkgo biloba leaves and
extracts,” Journal of Chromatography A, vol. 967, no. 1, pp. 21–55,
2002.
[34] R. K. Roy, M. Thakur, and V. K. Dixit, “Development and
evaluation of polyherbal formulation for hair growth–
promoting activity,” Journal of Cosmetic Dermatology, vol. 6,
no. 2, pp. 108–112, 2007.
[35] R. A. Hiipakka, H. Z. Zhang, W. Dai, Q. Dai, and S. Liao,
“Structure-activity relationships for inhibition of human
5alpha-reductases by polyphenols,” Biochemical Pharmacology,
vol. 63, no. 6, pp. 1165–1176, 2002.
[36] J. W. Oh, J. Kloepper, E. A. Langan et al., “A guide to studying
human hair follicle cycling ,” “in vivo,” Journal of Investigative
Dermatology, vol. 136, no. 1, pp. 34–44, 2016.
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