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Current updates on Centella asiatica: Phytochemistry, pharmacology and traditional uses

Authors:

Abstract

Plants have been demonstrated extraordinary source of medicine, and recently focus on medicinal plant research has increased. Centella asiatica is well known for its traditional uses and medicinal properties for the treatment of many diseases. The published literatures mention the use of this plant as whole and bioactive compounds isolated are widely used in the treatment of various human ailments. C. asiatica reported to possess various pharmacological activities: antimicrobial activity, anticancer activity, wound healing activity, neuroprotechtive activity, immunomodulatory activity, anti-inflammatory activity, hepatoprotective activity, insecticidal activity, and antioxidant activity. C. asiatica is also rich in flavonoids and terpenoids compounds among them asiatic acid, asiaticoside, madecassoside is well characterized for its pharmacological value. The present review summarized widespread information on phytochemistry, isolated and characterized bioactive compounds, pharmacological properties, in vitro propagation and traditional uses of the important medicinal plant C. asiatica.
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Review Open Access
Current Updates on Centella asiatica: Phytochemistry, Pharmacology and
Traditional Uses
Dipankar Chandra Roy , Shital Kumar Barman , Md. Munan Shaik
Department of Biotechnology and Genetic Engineering, Islamic University, Kushtia-7003, Bangladesh
Corresponding author email: munanbt2004@gmail.com; mmshaik@btge.iu.ac.bd; Authors
Medicinal Plant Research, 2013, Vol.3, No.4 doi: 10.5376/mpr.2013.03.0004
Received: 14 Jan., 2013
Accepted: 23 Jan., 2013
Published: 28 Jan., 2013
Copyright © 2012 Dipankar et al., This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted
use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:
Dipankar C.R., et al., 2013, Current Updates on Centella asiatica: Phytochemistry, Pharmacology and Traditional Uses, Medicinal Plant Research, Vol.3, No.4
20-36 (doi: 10.5376/mpr.2013.03.0004)
Abstract Plants have been demonstrated extraordinary source of medicine, and recently focus on medicinal plant research has
increased. Centella asiatica is well known for its traditional uses and medicinal properties for the treatment of many diseases. The
published literatures mention the use of this plant as whole and bioactive compounds isolated are widely used in the treatment of
various human ailments. C. asiatica reported to possess various pharmacological activities: antimicrobial activity, anticancer activity,
wound healing activity, neuroprotechtive activity, immunomodulatory activity, anti-inflammatory activity, hepatoprotective activity,
insecticidal activity, and antioxidant activity. C. asiatica is also rich in flavonoids and terpenoids compounds among them asiatic acid,
asiaticoside, madecassoside is well characterized for its pharmacological value. The present review summarized widespread
information on phytochemistry, isolated and characterized bioactive compounds, pharmacological properties, in vitro propagation and
traditional uses of the important medicinal plant C. asiatica.
Keywords Centella asiatica; Medicinal Plants; Triterpenes; Terpenoids phytochemistry; Pharmacology; Neuroprotechtive activity;
Wound healing actitivty; Anti-inflammatory activity; Anticancer activity
Background
Medicinal plants are an important episode in the
medical sector. Around 5 000 species have specific
therapeutic value among 250 000 higher plant species
on earth (Joy et al., 1998). Centella asiatica has a long
history in ancient Ayurvedic remedy, used in wound
healing, cleansing for skin problem and digestive
disorders (Chevallier, 2001) and effective in treatment
of stomach ulcers, mental fatigue, diarrhea, epilepsy,
hepatitis, syphilis and asthma (Goldstein and
Goldstein, 2012). Such traditional uses and reputation
of this species cross over the boundary limit of
Bangladesh, India, and Srilanka and now extensively
used in the West (Chevallier, 2001; Meulenbeld and
Wujastyk, 2001). C. asiatica and Hydrocotyle asiatica,
belongs to family Apiaceae (Umbelliferae) are used
synonymously and commonly known as Thankuni
(Bengali), Bemgsag/Brahma-Manduki/Gotukola/Khu-
lakhudi/Mandookaparni (Hindi), Indian Pennywort/
Marsh Pennywort/ Gotu kola (English) (Singh et al.,
2010). C. asiatica is creeping, perennial herb with up
to 2m long slender and tender horizontal reddish
prostrate stolons, characterized by long rooting
internodes (Jamil et al., 2007; Koh et al., 2009).
Glabrous leaves, 1-3 arising from each node of the
stems, are green, fan-shaped or round renifrom,
1.4 cm by 1.7 cm with crenate or dentate margin
(Jamil et al., 2007; Koh et al., 2009). Flowers
occurring in July- September are umbels with 3-4
white or light purple-to-pink petals bearing 4mm long
oval to globular shaped fruit (Chauhan, 1999; Jamil et
al., 2007; Koh et al., 2009). The most used part for
medicinal purposes is dried whole plant, leaves and
stems. C. asiatica plant is indigenous to Bangladesh,
India, West Pakistan, China, Japan, America and the
pacific (Koh et al., 2009). This plant is commonly
seen in moist, sandy or clayey soils waste places
(Jamil et al., 2007).
Phytochemistry
C. asiatica is a rich source of amino acids, flavonoids,
terpenoids, essential oils, alkaloids etc. (Table 1).
Most of the phytochemical studies concentrated on
leaves and the constituents vary depending upon the
geographical distribution (Chong and Aziz, 2011).
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Table 1 Chemical constituents of C. asiatica
Main groups
Constituents
References
Amino acids
Alanine and serine (major components), aminobutyrate, aspartate, glutamate,
histidine, lysine, threonine, arginine, leucine, iso-leucine, valine, methionine,
tyrosine, phenylalanine, proline, cystine, glycine.
(Barnes et al., 2007;
Chong NJ and Aziz,
2011),
Carbohydrates
Glucose, mesoinositol, centellose, pectin, arabinogalactan
(Chong NJ and Aziz,
2011)
Phenols
Flavonoids: Kaempferol, kaempferol-3-o-β-d-glucuronide, castilliferol, quercetin,
quercetin-3-o-β-d-glucuronide, castillicetin, apigenin, rutin, luteolin, naringin
(Bhandari et al., 2007;
Zheng and Qin, 2007;
Chong NJ and Aziz,
2011)
Phenylpropanoids: Rosmarinic acid, chlorogenic acid, 3,4-di-o-caffeoyl quinic acid,
1,5-di-o-caffeoyl quinic acid, 3,5-di-o-caffeoyl quinic acid, 4,5-di-o-caffeoyl quinic
acid, isochlorogenic acid
(Chong NJ and Aziz,
2011)
Tannin: Tannin, phlobatannin
(Chong NJ and Aziz,
2011)
Terpenoids
Triterpenes, asiaticoside, centelloside, madecassoside, brahmoside, brahminoside
(saponin glycosides), asiaticentoic acid, centellic acid, centoic acid, madecassic
acid, terminolic acid and betulic acid.
(Barnes et al., 2007;
Jamil et al., 2007)
Volatile oils and
fatty oils
Various terpenoids: β-caryophyllene, trans β-farnesene and germacrene D
(sesquiterpenes), α-pinene and β-pinene.
Fatty acids: linoleic acid, linolenic acid, lignocene, oleic acid, palmitic acid, stearic
acid.
(Barnes et al., 2007;
Jamil et al., 2007)
Vitamins
Ascorbic acid, nicotinic acid, β-carotene
(Chong NJ and Aziz,
2011)
Mineral
Calcium, phosphorus, iron, potassium, magnesium, manganese, zinc, sodium,
copper
(Chong NJ and Aziz,
2011)
Other constituents
Hydrocotylin (an alkaloid), vallerine (a bitter principle), phytosterols (e.g.
campesterol, sitosterol, stigmasterol), resin. ~14 different polyacetylenes
(8-acetoxycentellynol, cadiyenol, dotriacont-8-en-1-oic acid, 11-oxoheneicosanyl
cyclohexane).
(Barnes et al., 2007;
Chong NJ and Aziz,
2011)
Bioactive compounds
C. asiatica is being used as a natural source of
medicine for long time. The main active constitients
of C. asitica are pentacyclic triterpenes (asiatic acid,
madecassic acid, asiaticoside, and madecassoside, etc.)
(Puttarak and Panichayupakaranant, 2012b). Two new
dammarane monodesmosides centellosides A (1) and
B (2), and two new natural products ginsenosides Mc
(10) and Y (11), were reported recently (Weng et al.,
2011; Han et al., 2012). An efficient microwave-
assisted extraction method was developed for asiatic
acid and a sensitive method for quantification of it and
madecassoside in rat plasma also reported (Han et al.,
2012; Nasir et al., 2012; Puttarak and Panicha-
yupakaranant, 2012a). Asiatic acid has shown
numerous therapeutic activities and biotransformation
of it by Penicillium lilacinum ACCC 31890, Fusarium
equiseti CGMCC 3.3658, and Streptomyces griseus
CGMCC 4.18 strains was investigated and structure
were deduced for all new derivaties (Guo et al., 2012).
The ELISA method was investigated as an analytical
tool for quality control and standardization of
pharmaceutical products containing asiaticoside and
madecassoside (Juengwatanatrakul et al., 2011;
Tassanawat et al., 2012). Bioactive compounds
isolated and characterized from C. asiatica are
summarized in Table 2 with their physical properties.
Pharmacological Activity
The primary constituents of C. asiatica is the
triterpenic fractions which showed wide range of
defensive and therapeutic effects, most prominently
influencing of collagen production and deposition in
wound healing. Titrated Extract of Centella asiatica
(TECA) is used to treat several microcirculatory problems,
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Table 2 Structure and biological activities of bioactive compounds isolated from C. asiatica
Name of the compounds
Structure Biological activity References
Asiatic acid (C
30
H
48
O
5
;
mw=488.71)
Aids in generation of neuroglia; promotes wound
healing, promotes cuticle cornification; stimulates
granulation; induces gene expression changes,
enhancing learning and memory properties,
antinociceptive activity, anti-inflammation activity,
acetylcholinesterase inhibitory activity, anti apoptotic
activity
(Huang et al.,
2011; Nasir et
al., 2011a,
2012; Zhou et
al., 2011; Song
et al., 2012;
Zhang et al.,
2012)
Asiaticoside (C
48
H
78
O
19
;
mw=
959.15)
Anti-inflammatory; antioxidant induces gene
expression changes, wound healing, reduces scar
formation, neuroprotective activity, improve collagen
biosynthesis
(Tang et al.,
2011a; Zhou et
al., 2011; Lee
et al., 2012;
Nowwarote et
al., 2012;
Paolino et al.,
2012; Wan et
al., 2012; Xu
et al., 2012a)
Madecassic acid
(C
30H48 O6;
mw=504.71)
Induces gene expression changes,
(Zhou et al.,
2011; Song et
al., 2012)
Madecassoside
(
C48H78 O20 ;
mw=
975.14)
Induces gene expression changes, protection of
endothelial cells from oxidative injury.
(Zhou et al.,
2011; Bian et
al., 2012)
Quercetin (C
15
H
10
O
7
;
mw=
302.24)
Anti-HIV-1, antiasthmatic, antibacterial,
antihepatotoxin, antihypertensive, anti-inflammatory,
antitussive, antiviral, coronary vasodilator,
antihypercholesterolemic, 5-HT inhibitor, smooth
muscle relaxant, platelet aggregation inhibitor,
3’,5’-cAMP-phosphodiesterase inhibitor, fatty acid
synthetase inhibitor, aldose reductase inhibitor (eye
lens), protein kinase C inhibitor; antihypertensive,
reduces blood capillary brittleness, antioxidant
(Chong NJ and
Aziz, 2011;
Zhou et al.,
2011)
Kaempferol (C
15
H
10
O
6
;
mw=
286.24)
Anti-HIV-1, antibacterial; anti-inflammatory,
antitussive to cure trachitis, antioxidant, 5
-lipoxygenase inhibitor; iodinate thyronine
deiodinase inhibitor; aldose reductase inhibitor
(Chong NJ and
Aziz, 2011;
Zhou et al.,
2011)
Apigenin (
C15H10O5;
mw=
270.24)
Antibacterial, antiulcerative, antispasmodic (smooth
muscle), diuretic, aldose reductase inhibitor,
antihypertensive, anti-inflammatory, antioxidant,
nodulation signal for metabiosis of pea and
Rhizobium leguminosarum,
(Bhandari et
al., 2007; Zhou
et al., 2011)
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Continuing table 2
Name of the compounds
Structure Biological activity References
Rutin (
C27H30 O16 ;
mw=
610.53)
Anti-inflammatory, antiviral, aldose reductase
Inhibitor, insect antifeedant (Heliothis zea), insect
phagostimulant (Gastrophysa atrocynea),
antioxidant, inhibits cancer cell invasion, reduces
blood capillary permeability and brittleness
(Bhandari et
al., 2007; Zhou
et al., 2011)
Luteolin (
C15H10 O6;
mw=
286.24)
Antiallergic, antibacterial, antifungal, cytotoxic,
anti-inflammatory, antispasmodic, antitussive,
antiviral, enhances arterial tension and lowers
intravenous tension, enhances blood capillary
permeability, immunoenhancer, increases coronary
flow; dihydrocoenzyme I (NADH) oxidase inhibitor,
iodine-induced thyronine deiodinase inhibitor, aldose
reductase inhibitor, anti-inflammatory, anti-HIV
activity
(Bhandari et
al., 2007; Zhou
et al., 2011)
Quercitrin (C
21
H
20
O
11
;
mw=
448.39)
Antibacterial, antineoplastic, antihepatotoxin,
anti-inflammatory, antimutagenic, antiviral, diuretic,
Hemostatic, aldose reductase inhibitor, antioxidant,
insect antifeedant (Bombyx mor), insect
phagostimulant (Gastrophysa atriocyaea),
hepatoprotective
(Bhandari et
al., 2007; Zhou
et al., 2011)
Naringin (C
27
H
32
O
14
;
mw=580.55)
Antibacterial, anti-inflammatory, antiviral, aldose
reductase inhibitor, passive cutaneous anaphylaxis
inhibitor
(Zheng and
Qin, 2007;
Zhou et al.,
2011)
Betulic acid (C
30H48 O3;
Mw=
456.72)
Antineoplastic, cytotoxic, antitubercular, antibacterial (Jamil et al.,
2007; Zhou et
al., 2011)
α
-Pinene (C10H16;
mw=136.24;
Antifungal, antitussive, irritant. (Barnes et al.,
2007; Zhou et
al., 2011)
β
-Pinene (C10H16;
mw=136.24;
Antifungal, anti-inflammatory, antitussive (Barnes et al.,
2007; Zhou et
al., 2011)
Β
-caryophyllene (C15H24;
mw=204.36);
Flavorant (Barnes et al.,
2007; Zhou et
al., 2011)
Linolenic acid
(C
18H30 O2;
mw=278.44)
Nutrient, inhibits cancer cell invasion, 5α-reductase
inhibitor
(Jamil et al.,
2007; Zhou et
al., 2011)
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Continuing table 2
Name of the compounds
Structure Biological activity References
Oleic acid
(C18 H34 O2;
mw=282.47)
Increases absorption through skin, dermatitis, inhibits
cancer cell invasion
(Jamil et al.,
2007; Zhou et
al., 2011)
Stigmasterol (C
29H48 O;
mw=412.71)
Antihypercholesterolemic, antimutagenic, cytotoxic
inactive, antileishmanial, antimalarial,
antitrypanosomal, platelet aggregation inhibitor,
antiviral
(Barnes et al.,
2007; Zhou et
al., 2011)
Ascorbic acid (C
6
H
8
O
6
;
mw=176.13)
Antioxidant, antibacterial, anti-infective, antidote,
antihypercholesterolemic, inhibits production of
Carcinogen, induces tissue to produce collagen,
hematopoietic activity
(Chong NJ and
Aziz, 2011;
Zhou et al.,
2011)
Nicotinic acid (
C6H5NO2;
mw=123.11)
Antihypercholesterolemic, vasodilator (peripheral) (Chong NJ and
Aziz, 2011;
Zhou et al.,
2011)
β-Carotene (C
40
H
56
;
mw=536.89)
EBV-EA activation inhibitor, anti-tumor promoter,
ultraviolet screen, pigment, food additive
(Chong NJ and
Aziz, 2011;
Zhou et al.,
2011)
Alanine (C
3
H
7
NO
2
;
mw=89.09)
Food additive, reverses glucopenia and ketosis
caused by starvation, glucagon secretion promotor
(Barnes et al.,
2007; Zhou et
al., 2011)
Chlorogenic acid
(C
16H18 O9; mw=354.32)
Antioxidant, antineoplastic, cytotoxic, antimutagenic,
antiviral, choleretic, hemostatic, leukopoietic,
antimalarial,
(Chong NJ and
Aziz, 2011;
Zhou et al.,
2011)
Irbic acid
(C
28H26 O15 ; mw=602)
Strong radical scavenging, collagenase inhibitory
activity
(Antognoni et
al., 2011)
skin inflammation (eczema, atopic dermatitis, leprosy,
varicose ulcers, etc.) fever, intestinal problems and
genitourinary conditions (Belcaro et al., 2011). C.
asiatica exerts diverse pharmacological activities such
as antibacterial, antidepresent, antiemetic, antineo-
plastic, antioxidant, antithrombotic, anxiolytic,
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gastroprotective, immunomodulatory, antigenotoxic,
nerve regenerative, reproductive, wound healing etc.
due to the presence of several saponin constituents,
including asiaticoside, asiatic acid, madecassic acid
and some other bioactive compounds (Craker and
Simon, 1986; Koh et al., 2009; Kim et al., 2011).
Anti-inflammatory activity: Asiatic acid and
madecassic acid showed anti-inflammatory effect by
the inhibition of enzymes (iNOS, cyclooxygenase-2
(COX-2)), interleukins (IL-6, IL-1β), cytokine tumor
necrosis factor (TNF-α) expression through the
down-regulation of NF-κB activation in lipopoly-
saccharide (LPS) induced RAW 264.7 murine
macrophage cells (Yun et al., 2008; Won et al., 2010).
Madecassoside prevented collagen II (CII)-induced
arthritis (CIA) in mice (Liu et al., 2008). Ethanolic
extract of C. aiatica at dose 100 mg/kg of body weight
showed anti-inflammatory activity in rats similar to
standard Ibuprofen (George et al., 2009).
3,5-dicaffeoyl-4-malonylquinic acid, extract from C.
asiatica demonstrated beneficial effect on
inflammatory bowel disease in rats (Di Paola et al.,
2010). In experimental animal asiaticoside dose
inhibited LPS induced fever and inflammatory
response, including serum TNF-α and IL-6 production,
liver myeloperoxidase (MPO) activity, brain COX-2
protein expression and prostaglandin E(2) (PGE(2) )
production (Wan et al., 2012). Asiaticoside G was also
reported having anti-inflammatory property in
LPS-stimulated RAW 264.7 cells (Nhiem et al., 2011).
Anticancer activity: A large number of experimental
reports proved that different solvent extracts of C.
asiatica has anti-cancerous activity. In vitro study on
HeLa, HepG2, SW480 and MCF-7 cell lines showed
that methanolic extract had induced apoptosis in
human breast cancerous MCF-7 cells (Babykutty et al.,
2009). Water extracts induced apoptosis in colonic
crypts and exerted chemopreventive effect on colon
tumorigenesis in male F344 rats (Bunpo et al., 2004).
Asiatic acid induced apoptosis in human melanoma
SK-MEL-2 cells (responsible for skin cancer) and
SW480 human colon cancer cells (Park et al., 2005;
Tang et al., 2009). Asiaticoside enhanced anti-tumor
activity of vincristine in cancer cells (Huang et al.,
2004). Constituents in the methanol extract inhibited
the proliferation of human gastric adenocarcinoma
(MK-1), human uterine carcinoma (HeLa), and murine
melanoma (B16F10) cells (Yoshida et al., 2005).
Anticonvulsant activity: Oral administration of
different extracts from C. asiatica for 1 week at a dose
of 200 mg/kg of body weight of in pentylenetetrazol
(induces seizure) induced rats increased the level of
acetylcholine (neurotransmitter) and decreased the
activity of acetylcholinesterase, causes perceptible
changes in the cholinergic system which indicates the
anticonvulsant activity (Visweswari et al., 2010).
Antidepressant activity: Total triterpenes from C.
asiatica showed reduced immobility time and
ameliorating the imbalance of amino acid levels in
forced swimming mice indicate antidepressant activity
(Chen et al., 2003). Total triterpenes from C. asiatica
also ameliorated the function of hypothalamic-
pituitary-adrenal axis (HPA axis), increased the
contents of monoamine neurotransmitters in rat brain
and reduced the corticosterone level in serum (Chen et
al., 2005).
Antioxidant activity: C. asiatica possesses potent
antioxidant activity, which can exerted neuropro-
tective effect and effect against age related oxidative
damage in rats brain (Subathra et al., 2005). The
anti-oxidant enzymes, like superoxide dismutase
(SOD), catalase and glutathione peroxidase (GSHPx)
were significantly increased, and anti-oxidants like
glutathione (GSH) and ascorbic acid were decreased
in lymphoma-bearing mice after oral treatment with
50mg/kg of body weight per day of crude methanol
extract of C. asiatica for 14 days (Jayashree et al.,
2003). Administration of aqueous extracts of C.
asiatica showed to counteract lead-induced oxidative
stress male rats (Sainath et al., 2011). Flavonoid
compounds were present in aqueous extract of C.
asiatica, showed highest antioxidant property (Pittella
et al., 2009). The antioxidant properties of essential
oils and various extracts of this plant may be a great
interest in food industry, since their possible use as
natural additives. To study the antioxidant properties
and phenolic compounds present in C. asiatica, the
optimum brewing procedure was studied to use as
herbal teas (Ariffin et al., 2011).
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Antiulcer activity: C. asiatica showed significant
protection against ethanol, aspirin, cold restraint stress
and pyloric ligation induced gastric ulcers in rats when
200 mg/kg and 600 mg/kg of body weight of fresh
juice was given orally twice daily for five days
(Sairam et al., 2001). Water extract of C. asiatica
containing asiaticoside were found to reduce the size
of the acetic acid induced gastric ulcers in rats (Guo et
al., 2004).
Anxiolytic activity: 12 g oral single dose of C.
asiatica after 60 minutes significantly attenuated the
acoustic startle response (ASR) in human (Bradwejn
et al., 2000). The elevated plus maze (EPM) test for
5 minutes revealed that administration of standardized
extract, methanol and ethyl acetate extracts as well as
pure asiaticoside had imparted anxiolytic activity in
rats (Wijeweera et al., 2006; Wanasuntronwong et al.,
2012). Medication of 500 mg/capsule (concentrated
lyophilized of 70% hydro-ethanolic extract of C.
asiatica), twice daily, after meal for 60 days in 33
patient (18 male and 15 female; average age 33
years) in Kolkata (India) demonstrated that C.
asiatica not only significantly had attenuated
anxiety related disorders but it also significantly
had reduced stress phenomenon and its correlated
depression (Jana et al., 2010).
Cardioprotective activity: Administration of alcoholic
extract of C. asiatica at a dose of 1000 mg/kg of body
weight in Laboratory bred Sprague–Dawley rats
significantly reduced the necrosis of the myocardium
(Pragada et al., 2004). C. asiatica extract
demonstrated the cardioprotective effect at a dose of
200 mg/kg of body weight in adult male albino rats of
Wistar strain on antioxidant tissue defense system
during adriamycin induced cardiac damage (Gnana-
pragasam et al., 2004). Madecassoside showed protective
effect on myocardial ischemiareperfusion injury in
rabbits and rats (Li et al., 2007; Bian et al., 2008).
Hepatoprotective activity: Total glucosides extract of
C. asiatica showed significant anti-liver fibrosis effect
in dimethylnitrosamine induced liver fibrosis in rats
(Ming et al., 2004). Asiaticoside revealed hepatopro-
tective effect against acute liver injury induced by
lipopolysaccharide/D-galactosamine in mice (Zhang et
al., 2010).
Effect on Skin: Asiaticoside stimulated skin aging
inhibitor type 1 collagen synthesis in human dermal
fibroblast cells and potential use in the treatment
and/or prevention of hypertrophic scars and keloids
was recommended (Lee et al., 2006; Tang et al.,
2011b). Alcoholic extract of C. asiatica showed useful
effects in pruritis and other skin disease (Gohil et al.,
2010). Hydroalcoholic extract of C. asiatica was used
to be made herbal creams along with four medicinal
plants (Curcuma caesia, Areca catechu, Cinnamon
zeylanicum and Tamarindus indica) which showed
increased skin hydration, sebum levels, viscoelasticity,
and decreased melanin content (Saraf et al., 2012).
Asiaticoside promotes skin cell behaviours involved
in wound healing by increasing migration rates of skin
cells, enhancing the initial skin cell adhesion, inducing
an increase in the number of normal human dermal
fibroblasts (Lee et al., 2012). Aqueous extract of C.
asiatica was nano-encapsulated with gelatin and
efficiently reduced the expression of matrix
metalloproteinase (MMP)-1 in UV-irradiated cells and
inhibited hyaluronidase expression in mouse skin
(Kwon et al., 2012).
Immunomodulating activity: Triterpenoid saponins
of C. asiatica showed immunomodulatory effect
(Plohmann et al., 1997). Methanolic extract of C.
asiatica dramatically increased phagocytic index and
total WBC in Swiss Albino mice (Jayathirtha and
Mishra, 2004). Administration of water extract of C.
asiatica significantly increased proliferation and the
production of IL-2 and TNF-α in human peripheral
blood mononuclear cells (PBMCs) but ethanol extract
had inhibitory effect (Punturee et al., 2005). Asiatic
acid and C. asiatica ethanol and dichloromethane
extracts showed inhibitory effect on three major
cDNA, which expressed human cytochrome P450
(CYP2C9, CYP2D6 and CYP3A4) isoforms (Pan et
al., 2010).
Radioprotective activity: Aqueous extract C. asiatica
showed more radioprotective effect than standard drug
“ondansetron” against conditioned taste aversion
(behavioural perturbation) induced by 60Co-γ
irradiation at low dose 2Gy in male rats (Shobi and
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Goel, 2001). Administration of 100 mg/kg of body
weight of aqueous extract of C. asiatica, just 1 hour
before irradiation with 8Gy 60Co- γ rays was found
most radioprotective in Swiss Albino Mouse (Sharma
and Sharma, 2002) and further study revealed that
100mg/kg of body weight of dried powdered extract
of C. asiatica had found to be effective against
modified 60Co-γ irradiation induced damage in the
mouse liver (Sharma and Sharma, 2005). 70%
ethanolic extract of C. asiatica significantly reduced
radiation-induced damage to DNA (Joy and Nair,
2009). microRNA (miRNA) expression profiling
analysis was used to evaluate the protective effects of
C. asiatica against Ultraviolet B damage in human
keratinocytes, disclosed that miRNAs with altered
expression were functionally related with cell
proliferation and inhibition of apoptosis, may prevent
the skin damage (An et al., 2012).
Wound healing activity: A large number of reports
have been found about the wound healing activity of
C. asiatica (Temrangsee et al., 2011). Aqueous extract
of C. asiatica was used to formulate ointment, cream
and gel, which evaluate for wound healing in rats
showed faster epithelialisation and higher rate of
wound contraction (Sunilkumar et al., 1998).
Dexamethasone suppressed wound in Wistar Albino
rats could be healed by ethanolic leaf extracts as like
as normal model (Shetty et al., 2006). In a recent
study in 200 diabetic patients revealed positive result
with C. asiatica extracted capsule without any adverse
effect in the department of Surgery, Thammasat
University Hospital (Paocharoen, 2010). Wound
healing activity of asiaticoside was also reported in
guinea pig model at dose 1 mg/kg of body weight and
in the chick chorioallantoic membrane model at
concentration 40 µg/disk (Shukla et al., 1999). The
effects of asiaticoside in human periodontal ligament
cells (HPDLs) proliferation, protein synthesis, and
osteogenic differentiation were investigated and
showed enhanced periodontal tissue healing
(Nowwarote et al., 2012). At low concentrations
aqueous extract of C. asiatica promote epithelium
wound healing in rabbit corneal epithelial (RCE) cells
(Ruszymah et al., 2012). Ultra-fine cellulose acetate
fiber mats containing asiaticoside (in crude extract or
pure substance) were prepared and evaluated for
wound dressings and loaded herbal substances were
found stable up to 4 months, promotes proliferation
and upregulating the production of collagen of the
seeded (Suwantong et al., 2010). The clinical efficacy
and side effects of the oral C. asiatica extract capsule
in the diabetic wound healing was investigated
(Paocharoen, 2010). Madecassoside showed enhance
wound-healing and diminish keloid formation in
primary keloid-derived fibroblasts, originating from
human earlobe keloids (Song et al., 2012).
Memory enhancing Activity: Since the ancient time,
C. asiatica is used to enhance intelligence and
improve cognitive function. Oral administration with
200 mg/kg of body weight aqueous extract during
postnatal development stage increased brain function
in juvenile and young adult mice (Rao et al., 2005).
Enhanced working memory and improved self-rated
mood were observed in 28 patients after higher dose
administration of C. asiatiac extract preparations
(Wattanathorn et al., 2008). Asiatic acids isolated from
C. asiatica showed enhancing learning and memory
properties in male SpraqueDawley rats (Nasir et al.,
2011b).
Burns: C. asiatica extract and its active constituents
are very effective against burns caused by boiling
water, electric current or gas exploitation.
Combination of C. asiatica extract with an antibiotic
was anti-infectious beside healing burns (Salas et al.,
2005). Low dose 108% to 1012% (w/w) of
asiaticoside application facilitated repairing in mice
burned wound (Kimura et al., 2008).
Anti-psoriatic Activity: C. asiatica shows anti-
psoriatic effect on SVK-14 keratinocyte due to the
presence of triterpenoid glycosides (Sampson et al.,
2001).
Antimicrobial Activity: C. asiatica shows
antibacterial activity on both Gram positive and Gram
negative bacteria. Growth inhibition of Gram positive
Bacillus subtilis and Gram negative Pseudomonas
aeruginosa, P. cichorii and Escherichia coli was
observed in the disc diffusion test of hexane and ethyl
acetate extracts of C. asiatica (Escop and
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28
Phytotherapy, 2003). 1 000 µg/disc of hot methanolic
extract is moderately effective on Staphylococcus
aureus and Methicillin Resistant S. aureus (Wild Type)
(Zaidan et al., 2005). Micobacterium tuberculosis and
M. leprae were reported to be more sensitive to
liposomal asiatocoside than free asiatocoside (Fugh-
Berman, 2003). Higher antiviral activity was also
reported with aqueous extract of C. asiatica against
type 2 Herpes simplex virus (Escop and Phytotherapy,
2003).
Lervicidal Activity: Haemaphysalis bispinosa (the
adult cattle tick), Paramphistomum cervi (sheep fluke),
Anopheles subpictus and Culex tritaeniorhynchus
showed sensitivity to hexane, chloroform, ethyl
acetate, acetone, methanol extract of C. asiatica but
methanol extract was the most effective on P. cervi
and A. subpictus (Bagavan et al., 2009). 3-O-[a-L-
arabinopyranosyl] 2 a, 3 ß, 6 ß, 23-a tetrahydroxyurs-
12-ene-28-oic acid, a triterpenoid glycoside, exhibited
inhibitory activity against larvae of Spilarctia oblique
(Shukla et al., 2000).
Anti-hyperglycemic effect: Oral administration of
asiatic acid and glibenclamide to streptozotocin
induced diabetic rats for 45 days prevented the altered
activities of key enzymes (glucose-6-phosphatase and
fructose-1,6-bisphosphatase) related with hypergly-
cemia (Ramachandran and Saravanan, 2012).
Neuroprotective Activity: Aqueous extract showed
neuroprotective effect by increasing the antioxidant
enzyme level in mice corpus striatum and
hippocampus (Haleagrahara and Ponnusamy, 2010).
Fresh leaf extract of C. asiatica was investigated on
dendritic morphology of amygdaloid neurons on adult
rats, one of the regions concerned with learning and
memory, showed a significant increase in the dendritic
length and branching points (Rao et al., 2012). Water
extract of C. asiatica inhibit the activity of subtypes of
phospholipase A2 (PLA2), which is related with
neurodegenerative disease (Defillipo et al., 2012).
n-hexane, chloroform, ethyl acetate, n-butanol extract
of C. asiatica showed anticonvulsant and neuropro-
tective activity in male albino rats (Visweswari et al.,
2010). D-galactose induced oxidative and mitochon-
drial dysfunction and cognitive impairment in mice,
which could be significantly improved in six weeks by
administration of C. asiatica (150 and 300 mg/kg of
body weight) (Kumar et al., 2011). Chronic aluminum
exposure in rat induce cognitive dysfunction, apoptosis,
oxidative stress and mitochondrial enzyme alteration
and administration of C. asiatica found significantly
decreased aluminum concentration, improved memory
performance, oxidative defense, acetylcholinestrease
activity, caspase-3 and reversal of mitochondrial
enzyme activity as compared to control (Prakash and
Kumar, 2012). The psychoactive and antioxidant role
of ethanolic extract of C. asiatica in middle cerebral
artery occlusion (MCAO) in rats was evaluated and
revealed that administration of C. asiatica extract
restored histological morphology of brain, diminished
infarction volume, greatly improved the
neurobehavioral activity (Tabassum et al., 2012).
Asiatic acid possess neuroprotective effects in vitro
and in vivo (Xu et al., 2012b), nootropic activity with
therapeutic implications for patients with memory loss
(Shinomol et al., 2011). Increased dendritic length and
branches was observed in rat after fresh leaves extract
administration (Mohandas Rao et al., 2006). Three
derivatives of asiatic acid were significantly effective
in protecting excess glutamate exposed neurons on
cultured cortical cells (Lee et al., 2000; Xu et al.,
2012b). Non-polar fraction of ethanolic extract
containing asiatic acid which found to be increased in
neurite outgrowth in human SH-SY5Y cells in the
presence of nerve growth factor and administration of
ethanolic extract through drinking water demonstrated
axonal regeneration in Male Sprague-Dawley rats
(Soumyanath et al., 2005). Asiatic acid was reported
for the treatment of cerebral ischemia in mice
(Krishnamurthy et al., 2009). Asiatic acid showed
potential neuroprotective activity against
C2-ceramides-induced cell death in primary cultured
rat cortical neuronal cells (Zhang et al., 2012) and
asiaticoside significantly attenuated 1-methyl-4-
phenyl-1,2,3,6-tetrahydropyridine (MPTP) induce
Parkinsonism in rat model (Xu et al., 2012a).
Asiaticoside was recommended for epilepsy, stroke,
multiple sclerosis and other neuropsychiatric disorders
(Barbosa et al., 2008).
Venous insufficiency Activity: Patients suffering
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29
from venous hypertension were positively effective to
an oral preparation of total triterpenic fraction of C.
asiatica (TTFCA) in the improvement of microcir-
culation and edema (leg volume) in venous
microangiopathy (Cesarone et al., 2001). C. asiatica
exract regulated mucopolysachharide metabolism in
connective tissue in patient with varicose veins
(Arpaia et al., 1990). However, a large number of
similar studies were reported on venous insufficiency.
Others: Asiaticoside was revealed as protective
against cecal ligation and puncture (CLP) induced
lung injury in mice (Zhang et al., 2010). This plant
also increases vigority (Mato et al., 2011). C. asiatica
extract in combination with Punica granatum
significantly improved clinical signs of chronic
periodontitis in 15 patients (Sastravaha et al., 2005).
Whole gene expression level were analyzed using
microarrays in human dermal fibroblasts (HDFs) to
determine whether H2O2 -induced senescence is
affected by C. asiatica extracts to characterized the
activity of extract in stress-induced premature
senescence (SIPS) and found that 39 mRNAs are
expressed differentially includes genes that regulate
cell growth, apoptosis, DNA replication, transcription,
gene silencing, senescence and the spindle checkpoint
(Kim et al., 2011). Oral administration of water extract
of C. asiatica protected the toxicity induced by
exogenously added and endogenously generated
β-amyloid in the Tg2576 mouse, which is a murine
model of Alzheimer’s disease with high β-amyloid
burden in SH-SY5Y cells and MC65 human
neuroblastoma cells from (Soumyanath et al., 2012).
Contradictions: Clinical study in patients suffering
from jaundice showed that all patients had improved
with C. asiatica discontinuation and deteriorated after
retaking due to having hepatotoxic effect (Jorge and
Jorge, 2005). This plant is not applicable for children,
pregnant and lactated women (Koh et al., 2009).
Traditional uses
Traditionally C. asiatica is used to treat differents
aliments in different countries for over a long time.
Traditional uses of C. asiatica are summarized in
Table 3.
In vitro propagation
Optimum shoots development of C. asiatica were
achieved in Duchefa medium supplemented with
2 mg/L 6 benzylaminopurine (BAP) and 0.1 mg/L
1-naphthaleneacetic acid (NAA) (Moghaddam et al.,
2011), Murashige and Skoog medium supplemented
with 2.5 mg/L kinetin (Prasad et al., 2012). Rooting
can be done on full-strength MS medium containing
0.5 mg/L indole-3-butyric acid (IBA) (Moghaddam et
al., 2011). Varying level of asiaticoside content in
shoot could be achieved with the varying ratio of
NH4+-N:NO3--N or Cu2+ concentration in the medium
(Prasad et al., 2012).
Conclusion
Since the time of immemorial C. asiatica is being
used for the treatment of wide range of maladies. So
far, the reports on bioactivity and clinical trials in
different models and human concern the asiaticoside
and its derivatives. Recent studies have confirmed the
efficacy of this plant and its constituents and extracts
to injury, leprosy, tuberculosis, cancer, aging,
gastrointestinal disease, skin disease, neurological
disorder, cardiovascular problems, ulcer, radiation,
respiratory problems and so on. However, further
clinical research are essential which can establish the
C. asiatica as a potential source of standard drugs.
Reference
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Bae S., 2012, Titrated extract of Centella asiatica provides
a UVB protective effect by altering microRNA expression
profiles in human dermal fibroblasts, International Journal
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Antognoni F., Perellino N.C., Crippa S., Dal Toso R., Danieli
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Arpaia M.R., Ferrone R., Amitrano M., Nappo C., Leonardo G.,
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Table 3 Traditional uses of C. asiatica in different regions for different purposes
Traditional Uses
References
Elephantiasis, uterine cancer, leprosy
(Leonard,
2006)
Bleeding, scabies and tinea / ringworm, skin ulcers, rash, and redness, abdominal pain, diarrhea,
dysentery, vomiting, red eyes, swollen throat, tonsillitis, nosebleeds, jaundice, infectious
hepatitis, boils, fistulas, furuncles and carbuncles with toxic swelling, fever, trauma, falls,
contusion, fractures, childhood tidal fevers, measles, asthma, bronchitis, respiratory problems,
tuberculosis, pleurisy, urinary difficulty with stones or bleeding, arsenic poisoning, fear of cold,
dizziness, leprosy, scrofula, improve of appetite, digestion
(Leonard,
2006; Koh et
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Varicose veins
(Leonard,
2006)
Skin ulcers, rash, and redness, pimples, stomachache, bleeding ulcer, constipation, hemorroids,
eye problems, fractures, painful and swollen joints, rib pain, hildhood convulsions, post partum
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... Minerals like calcium, magnesium, sodium, potassium, iron, phosphate, sulfate, and chloride are abundant in its ash. The leaves also contain high levels of vitamins B, C, and G [10,21] . ...
... Antidepressant activity: CA's total triterpenes rectified amino acid imbalances and reduced immobility time in mice's forced swimming tests, suggesting possible antidepressant effects. Additionally, these triterpenes decreased blood corticosterone levels, increased brain levels of monoamine neurotransmitters, and improved hypothalamic-pituitary-adrenal axis function [21] . Antioxidant activity: In rats' brains, Centella asiatica has potent antioxidant qualities that aid in neuroprotection and the reduction of age-related oxidative damage. ...
... In rats with lymphomas, a raw methanolic extract of Centella asiatica demonstrated substantial antioxidant activity and notable neuroprotective benefits, successfully shielding rat brains from age-related oxidative damage.The extract's simultaneous treatment dramatically decreased the oxidative stress caused by arsenic in the brain, kidneys, and liver. C.asiatica exhibits significant neuroprotective qualities and is efficient in reducing age-related oxidative damage in rat brains, despite the fact that it lacks chelating characteristics [21,22,23,24,25] . Antiulcer activity: Centella asiatica provides strong protection against pyloric ligation, stress, aspirin, and ethanol-induced stomach ulcers in rats. ...
Article
Centella asiatica, also referred to as gotu kola, is a well-known medicinal herb that has been used for more than 3,000 years in Chinese and ancient Indian Ayurvedic medicine. It has recently attracted interest from all around the world due to its several medicinal advantages. The pharmacological characteristics, chemical makeup, and therapeutic uses of Centella asiatica are examined in this paper. The plant, which is abundant in bioactive substances like triterpenoids and saponins, has strong anti-inflammatory, anticancer, anticonvulsant, and antioxidant properties. Among other advantages, its medicinal potential includes improving memory, reducing anxiety, and encouraging wound healing. Although its natural sources make it a desirable therapeutic alternative, the way it is administered and the patient's specific medical condition will determine its safety and efficacy. The IUCN has classified CA as endangered due to the alarming loss in its natural populations caused by uncontrolled exploitation. This underlines how urgently sustainable farming methods and more study are required to properly realize its therapeutic potential.
... The plant Centella asiatica (L.) Urb. of the family Apiaceae has been used as a traditional remedy in India, China and Southeast Asia since ancient times (Ganie et al. 2022 an antidepressant, cardioprotective, anticancer, antimicrobial, anti-inflammatory, and antioxidant agent (Zheng and Qin 2007;Roy et al. 2013). This variety of medicinal features of C. asiatica indicates its inherently rich composition of bioactive secondary metabolites, including asiatic acid, asiaticoside, madecassic acid, madecassoside, isothankuniside, brahmic acid, brahmoside and hydrocotylin (Sun et al. 2020;Ganie et al. 2022). ...
Article
Full-text available
Carbohydrate sources play a critical role in supporting plant growth under in vitro conditions. Centella asiatica (L.) Urb., a highly valued medicinal plant, is widely recognized for its therapeutic properties, including neuroprotective, anti-inflammatory, and anti-neurodegenerative effects. Among various carbon sources, sucrose at a 3% concentration is most commonly utilized due to its efficient uptake, metabolism, and stability. In this study, treatment with 7% xylose resulted in the highest accumulation of chlorophyll a (0.86 g/100 g fresh weight and 0.41 g/100 g fresh weight) and chlorophyll b (0.41 g/100 g fresh weight). Furthermore, bioactive compound analyses revealed that 7% xylose significantly enhanced the levels of asiaticoside (33.51 ± 0.24 mg/g DW), madecassoside (43.02 ± 0.15 mg/g DW), asiatic acid (20.03 ± 0.07 mg/g DW), and madecassic acid (22.84 ± 0.14 mg/g DW). Additionally, the total phenolic content was maximized in treatments with 7% xylose, 5% xylose, and 7% galactose. Other monosaccharides, such as 5% fructose and 5% glucose, also promoted the accumulation of bioactive compounds. Among disaccharides, 1.5% sucrose increased madecassoside levels, while 7% maltose and 5% galactose elevated both asiaticoside and madecassoside concentrations. These results emphasize the significant impact of specific carbohydrate sources on chlorophyll biosynthesis and bioactive compound production in C. asiatica, highlighting their potential to optimize in vitro culture protocols for enhanced phytochemical yields.
... 6 Then, mainly triterpenes and saponins were reported as the largest chemical groups in C. asiatica which appear to be responsible for its therapeutic effects. [3][4][5] Especially, madecassoside and asiaticoside are a pentacyclic triterpene saponin from C. asiatica that may exert their biological activity through converted into aglycone (madecassic acid, and asiatic acid) on hydrolysis reaction. 35,41 There is no report of these pentacyclic triterpenes from H. umbellata. ...
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Introduction Centella is an important genus in the Apiaceae family. It includes Centella asiatica , which has significant edible and medicinal values. However, this species is easily confused due to its similar morphological traits to Hydrocotyle umbellata , hindering its utilization in the consumer and pharmacological industries. Objective The study aims to differentiate these two closely related plant species using reliable methods of confirming the authenticity of natural herbal medicines. Methods Our work mainly focuses on the basic morphological characteristics, chemical markers, genetic fingerprints, and their biological responses. Results The plants can be clearly differentiated using their leaf shapes, stipules, petioles, inflorescences, and fruit structures. Although the phytochemical compositions of the C. asiatica extract were similar to that of H. umbellata which included flavonoids, tannins, and saponins important to the plant's ability to reduce inflammation and promote healing of wounds, the H. umbellata extract showed significantly higher toxicity than that of C. asiatica . High‐performance liquid chromatography analysis was used to identify chemical fingerprints. The result revealed that C. asiatica had major triterpene glycoside constituents including asiaticoside, asiatic acid, madecassoside, and madecassic acid, which have a wide range of medicinal values. In contrast, triterpenoid saponins were not identified in H. umbellata . Furthermore, using SCoT1–6 primers was possible to effectively and sufficiently created a dendrogram which successfully identified the closeness of the plants and confirmed the differences between the two plant species. Conclusion Therefore, differentiation can be achieved through the combination of morphometrics, molecular bioactivity, and chemical analysis.
... Centella asiatica is utilised as an anti-bacterial, anti-depressant, anti-emetic, anti-neoplastic, antioxidant, anti-thrombotic, anxiolytic, gastroprotective, and immunological modulator. 5,6 Previous studies indicate the antioxidant actions of Centella asiatica in different animal models. Aqueous Brahmi extract significantly reduced the levels of MDA and increased glutathione and catalase in rats subjected to STZ-induced oxidative stress. ...
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Centella asiatica (L.) Urban consists of two major triterpene glycosides, asiaticoside (AS) and madecassoside (MA), as active components used for wound healing and enhancing memory. To produce a polyclonal antibody against madecassoside (MA-PAb) and develop enzyme-linked immunosorbent assay (ELISA) and Eastern blotting methods for quantitative analysis of triterpene glycosides in Centella asiatica. An ELISA method was developed using polyclonal antibody against MA. An Eastern blotting method on the PES membrane was established for determination of MA and AS. The immunoassays were validated for sensitivity, precision, specificity and accuracy. The prepared MA-PAb shows specificity to MA and AS. The measuring range of triterpene glycosides was 0.39–50 µg/mL using the ELISA method. An Eastern blotting method was developed for determining individual MA and AS, which could be detected in the range of 62.5–500 ng. The limit of detection for MA and AS was 31.25 ng. The two methods developed showed good specificity, precision, and accuracy, and also correlated with high-performance liquid chromatography. These immunoassays have several advantages that include high sensitivity as well as being rapid and facile for determination of the triterpene glycosides in C. asiatica. Copyright
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Asiaticoside (AS), a triterpenoid isolated from Centella asiatica, has been found to exhibit antioxidant and anti-inflammatory activities in several experimental animal models. However, the underlying mechanisms remain elusive. In this study, we provide experimental evidences that AS dose-dependently inhibited lipopolysaccharide (LPS)-induced fever and inflammatory response, including serum tumor necrosis factor (TNF)-α and interleukin (IL)-6 production, liver myeloperoxidase (MPO) activity, brain cyclooxygenase-2 (COX-2) protein expression and prostaglandin E(2) (PGE(2) ) production. Interestingly, AS increased serum IL-10 level, liver heme oxygenase-1 (HO-1) protein expression and activity. Furthermore, we found that the suppressive effects of AS on LPS-induced fever and inflammation were reversed by pretreatment with ZnPPIX, a HO-1 activity inhibitor. In summary, our results suggest that AS has the antipyretic and anti-inflammatory effects in LPS-treated rat. These effects could be associated with the inhibition of pro-inflammatory mediators, including TNF-α and IL-6 levels, COX-2 expression and PGE(2) production, as well as MPO activity, which might be mediated by the up-regulation of HO-1. Copyright © 2012 John Wiley & Sons, Ltd.
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Wound healing proceeds through a complex collaborative process involving many types of cells. Keratinocytes and fibroblasts of epidermal and dermal layers of the skin play prominent roles in this process. Asiaticoside, an active component of Centella asiatica, is known for beneficial effects on keloid and hypertrophic scar. However, the effects of this compound on normal human skin cells are not well known. Using in vitro systems, we observed the effects of asiaticoside on normal human skin cell behaviors related to healing. In a wound closure seeding model, asiaticoside increased migration rates of skin cells. By observing the numbers of cells attached and the area occupied by the cells, we concluded that asiaticoside also enhanced the initial skin cell adhesion. In cell proliferation assays, asiaticoside induced an increase in the number of normal human dermal fibroblasts. In conclusion, asiaticoside promotes skin cell behaviors involved in wound healing; and as a bioactive component of an artificial skin, may have therapeutic value.