International Journal of Biological Chemistry 9 (6): 318-331, 2015
ISSN 1819-155X / DOI: 10.3923/ijbc.2015.318.331
© 2015 Academic Journals Inc.
A Review of the Medicinal Plants of Genus Orthosiphon (Lamiaceae)
1
Mukesh K. Singh, 1Bina Gidwani, 1Anshita Gupta,
1
Chanchal Deep Kaur, 2Pranita P. Kashyap and 3D.K. Tripathi
1
Hemant
Dhongade,
1
Shri Rawatpura Sarkar Institute of Pharmacy, Kumhari, Durg, Chhattisgarh, India
Maharashtra Institute of Pharmacy, Bramhapuri, Chandrapur, Maharashtra
3
Rungta College of Pharmaceutical Sciences and Research, Bhilai, Chhattisgarh, India
2
Corresponding Author: Mukesh Kumar Singh, Shri Rawatpura Sarkar Institute of Pharmacy, Kumhari, Durg,
Chhattisgarh, India Tel: +91-9691699320
ABSTRACT
In the genus Orthosiphon (Lamiaceae), Orthosiphon aristatus, Orthosiphon pallidus,
Orthosiphon thymiflorus, Orthosiphon stamineus are widely used in traditional medicine to prevent
different diseases such as diabetes, kidney stone, edema, rheumatism, hepatitis, hypertensive and
jaundice. A different variety of phytoconstituents has been isolated from the Orthosiphon species
which include monoterpenes, diterpenes, triterpenes, saponins, organic acid and flavonoids
compound. Antidiabetic, anti-inflammatory, antioxidant, hepatoprotective, analgesic and
nephroprotective activities have been reported in the plant extract and phytoconstituents. Hence,
the purpose of this review is to provide a comprehensive report about the Orthosiphon genus based
on its toxicity in order to identify its therapeutic potential and future prospects for betterment of
research.
Key words: Orthosiphon, phytochemistry, pharmacological activities, toxicity studies
INTRODUCTION
The genus Orthosiphon was coined from two Latin words, iorthos and siphon. The words
referred to straight while siphon meant tube like or cylindrical. These two words actually referred
to the straight tube like flowers that were produced by the Orthosiphon species and this was
considered as one of the main characteristics of the Labiatae or Lamiaceae family (Keng and Siong,
2006).
The genus Orthosiphon benth in tribe ocimeae comprises 40 species and was recorded from the
old world: in tropical and subtropical Asia including Southern Africa and Madagascar. The species
usually occurs in grassland, woodland or forest margins (Sadashiva et al., 2013).
Some of these species are important medicinal plants that are used in herbolism and thought
to have medicinal properties. Up to date, the genus provided a large number of chemical compounds
of which some indicated dynamic pharmacological activity (Sundarammal et al., 2012).
Orthosiphon aristatus has long history of medicinal use in Indonesia, Malaysia, Southeast Asia,
this plant was initially recorded as a treatment for diabetes, kidney stone and hypertension
(Matsubara et al., 1999; Ohashi et al., 2000; Masuda et al., 1992; Shibuya, 1999). Orthosiphon
pallidus is herbaceous shrub native to South East Asia and India has been used to treat urinary
lithiasis, edema, fever, influenza, rheumatism, hepatitis and jaundice (Kiruthika and
Meenakshi, 2011). Orthosiphon thymiflorus used in India to treat cytotoxic, diabetic,
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Int. J. Biol. Chem., 9 (6): 318-331, 2015
anti-inflammatory and hypertensive (Sundarammal et al., 2012; Sini et al., 2012; Kavimani et al.,
1997). Orthosiphon stamineus is used to treat diabetes, hypertension, oedema, epilepsy, fever,
influenza and jaundice (Arafat et al., 2008; Akowuah et al., 2005; Ho et al., 2010; Awale et al.,
2003a). The traditional indigenous uses and pharmacology of ethnobotanic herbs provides basic
knowledge for further development of medicinal plants and a useful approach for drug discovery
(Heinrich and Gibbons, 2001).
The genus Orthosiphon comprises an impressive number of species some of which have been
used in traditional medicine. Hence the purpose of this review is to provide a comprehensive report
about the genus based on its toxicity in order to identify its therapeutic potential and future
prospects for betterment of research. This will be possible through analysis of collected data related
to botany, local and traditional uses, pharmacology and toxicology of Orthosiphon species.
BOTANICAL DESCRIPTION
Orthosiphon plants are herbaceous shrubs which grow to a height of 1.5 m. Orthosiphon is a
popular garden plant with whitish flower having unique identification and bluish filaments
resembling a cast’s whiskers. Orthosiphon pallidus Royle ex Benth, O. aristatus, O. thymiflorus and
O. stamineus are commonly used in traditional medicines.
The morphology characteristics of O. pallidus are as follows: perennial herb with a woody root
stock not aromatic. Stems are diffusely branched ascending erect 10-35 cm, slender, quadrangular,
velvety or almost hairless. Leaves are ovate, 1-3.5×1.2, palegreen, slightly fleshy, nearly entire to
saw-toothed, gland-dotted, stalked, velvety to almost hairless. Flower stalks are 2 mm in flower and
up to 6 mm in fruit, velvety in lower part, upper lobe ovate-circular.
Orthosiphon aristatus is slender, smooth or hairy undershrub 30-60 cm high. Leaves in distant
pair, narrowed in to the stalk ovate, 5-10 cm long, pointed at bath ends, coarsely toothed margins.
The flowers are borne with extreme lax racemes. The calyxes of flowers have naked throat and bell
shape with two slender lower teeth. Corolla is purple-white in color with 2.5 cm long and smooth.
Nutlets are oblong and compressed.
Orthosiphon thymiflorus straggling, somewhat shrubby perennial herb up to 1.5 m tall not or
hardly aromatic. Stems several ascending to erect to 4-angled, normally well branched, retrorsely
pubescent along the angles and sometimes with dense hairs. Leaves are usually oval or elliptic with
1.4-4.5 cm long but larger in well shaded plants, glandular punctuate and hairless/pubescent
mostly along the veins beneath, margin scalloped or toothed, petiole up to 25 mm long.
Orthosiphon stamineus is a perennial herb. It attains 0.3-1.5 m high and 4 angle stem. Leaves
are simple, opposite, ovate, oblong lanceolate, elliptic orrhamboid, which have 2-4 cm wide and
4-7 cm long. The flowers are white, blue or violet.
TRADITIONAL USES OF SELECTED SPECIES
The plants of genus Orthosiphon have been used by the various parts of Asia and Africa.
Traditional uses of selected Orthosiphon species (Table 1) point to their importance especially in
the treatment of diabetes, kidney stone, influenza, hepatitis and jaundice.
In order to cover all published botanical names, a list of synonyms based on the relevant
taxonomic literature is provided (Table 2). The list encompasses representatives of the genus that
have ethanomedicinal relevance according to the present comprehensive literature review.
319
Table 1: Traditional uses, pharmacological and biological activities of selected Orthosiphon species
Species
Region
Plant part
Traditional uses
Pharmacological activity
Orthosiphon Indonesia
Dried leaves and Used in hypertension
Antibacterial activity
aristatus
and Malaysia
tops of stem
and diabetes
Indonesia
Leaves
Used as a diuretics
Diuretic effects
and Malaysia
Indonesia
Dried leaves
Used in hypertension
Antihypertensive
Used in diabetes
Southeast Asia
and Australia
Dried leaves
Aerial part
320
Baluchistan, Arabia,
Whole plant
India (Kashmir, Punjab,
(coarse powder)
West Bihar and Southwards
to Travancore)
Orthosiphon Aliyar foot hills of valparal, Fresh leaves
thymiflorus Coimbatore, Tamilnadu
Treatment of renal
inflammation used in
Kidney stone
Used in dysuria
Used to treat urinary
lithiasis, edema,
influenza, rheumatism,
hepatitis and jaundice
Treatment of
neurasthenia, general
tonic and aphrodisiac
Antioxidant
Reference
Chen et al. (1989)
Aqueous extract
Chen et al. (1999)
Water decoction
Matsubara et al. (1999),
Ohashi et al. (2000),
Masuda et al. (1992)
and Shibuya et al. (1999)
Di et al. (2013) and
Hsu et al. (2010)
Antioxidant and
anti-inflammatory
Methanol, ethanol and
water extract
Antioxidant and
anti-inflammatory
Anticancer
(51.74% cytotoxicity)
Hexane extract
Lower the blood pressure
and inhibition of heart of
pithed frog
Absolute alcohol
and Basu and Singh
Antioxidant, cytotoxic and
vasodialative
Absolute alcohol
Di et al. (2013) and
Hsu et al. (2010)
Ashokan and
Muthuraman (2011)
Basu and Sing (1956)
(1956)
Hydrodistilation,
Sundarammal et al.
Clevenger and
(2012)
apparatus
Attapady palakkad and
Powdered plant Anticancer
Cytotoxic activity, anti
Imbbibition,
Sini et al. (2012)
Kerala
material
diabetic, antihepatotoxic,
meceration and
antibacterial and hypertensive
percolation in chloroform
Tirunelveli and Tamilnadu Whole plant
Aquaretic
Diuretic activity and
Meceration in boiling
Kavimani et al. (1997)
anti-inflammetory
water
Maruthamalal hills
Dried leaves
Larvacidal
Larvacidal activity
Hexane, chloroform,
Kovendan et al. (2012)
Coimbatore and Tamilnadu
ethyl acetate, acetone
and methanol
Orthosiphon Malaysia, Indonesia and
Leaf part (fresh) Treating stone diseases Bladder inflammation, food preservative, Methanol, Chloroform, Awale et al. (2003a, b),
stamineus Japan
and gout, Java tea and inhibitory effect in growth of calcium Ethyl acetate and
Hossain and Ismail
decocted leaves as
crystal,
diabetes,
hypertension,
Acetone
(2013), Akowuah et al.
diuretics
rheumatism, tonsillitis, menstrual
(2005), Ho et al. (2010),
disorder, urinary lithiasis, biliary
Arafat et al. (2008),
litiasis, epilepsy, oedema, eruptive fever,
Akowuah et al. (2005)
hepatitis, jaundice, influenza, gonorrhoea,
and Hossain and Ismail
syphilills, renal calculus, gallstone,
(2013)
diuretics, inhibitory activity of nitric
oxide and body detoxification
Myanmar
Leaf part (dried) Antidiabetics to treat
Diabetes, urinary tract and renal
Methanol
Awale et al.
urinary tract and renal diseases
(2003a, b, 2004) and
diseases
Han et al. (2008)
China, Indonesia and
Arial part
Urinary lithiasis, edema, eruptive fever, Methanol
Awale et al.
Veitnam
influenza, hepatitis and jaundice
(2003b, 2004) and
Paton et al. (2004)
Int. J. Biol. Chem., 9 (6): 318-331, 2015
Southeast Asia
and Australia
Orthosiphon Africa and
pallidus
South-East Asia
Dried leaves
Active extract
Aqueous extract
Int. J. Biol. Chem., 9 (6): 318-331, 2015
Table 2: Representatives of genus Orthosiphon used in traditional medicine and their synonyms
Orthosiphon species
Synonyms
Orthosiphon adenocaulis
Orthosiphon adornatus, Orthosiphon affinis Benth, Orthosiphon adscendence and Orthosiphon
albiflorus
Orthosiphon allenii
Orthosiphon amabilis, Orthosiphon ambiguous Bolus and Orthosiphon angolensis
Orthosiphon aristatus var. aristatus Orthosiphon asperus, Orthosiphon atacorensis, Orthosiphon australis and Orthosiphon bartsioides
Orthosiphon biflorus
Orthosiphon bodinieri, Orthosiphon bolusii, Orthosiphon bracteatus, Orthosiphon brevicaulis,
Orthosiphon buchananii and Orthosiphon bracteotus
Orthosiphon bullosus
Orthosiphon buryi, Orthosiphon calaminthoides, Orthosiphon cameronii, Orthosiphon canescens
and Orthosiphon capitatus
Orthosiphon cladotrichos
Orthosiphon cleistocalyx, Orthosiphon colouratus, Orthosiphon comosus Wight and Orthosiphon
comosus Baker
Orthosiphon cuanzae
Orthosiphon debilis, Orthosiphon decipiens, Orthosiphon degasparisianum and Orthosiphon diffuses
Orthosiphon discolor
Orthosiphon dissitifolius, Orthosiphon ehrenbergii, Orthosiphon ellenbecki and Orthosiphon elliottii
Orthosiphon ellipticus
Orthosiphon emirnensis and Orthosiphon engleri Perkins
Orthosiphon ferruginous
Orthosiphon foliosus
Orthosiphon fruticosus
Orthosiphon gerrardii, Orthosiphon glabratus Benth, Orthosiphon glabratus var. Palviflorus (Benth)
and Orthosiphon glabrascene
Orthosiphon glandulosus
Orthosiphon glutinosus Chiov., Orthosiphon gofensis S. Moore and Orthosiphon grandiflorus Bold.
Orthosiphon hanningtonii
Orthosiphon helenae Buscal, Orthosiphon heterochrous Briq, Orthosiphon heterophyllus Gurke,
Orthosiphon hildebrandtii Vatke, Orthosiphon hildebrandtii Baker, Orthosiphon hispidus Benth.,
Orthosiphon hockii, Orthosiphon holubii and Orthosiphon homblei
Orthosiphon humbertii
Orthosiphon humilis, Orthosiphon incisus and Orthosiphon inconcinnus
Orthosiphon incurvus
Orthosiphon inodorus, Orthosiphon iodocalyx Briq, Orthosiphon johnstonii Baker, Orthosiphon
kelleri Briq, Orthosiphon kirkii Baker and Orthosiphon labiatuss
Orthosiphon lanatus Doan
Orthosiphon lanceolatus Gurke, Orthosiphon lanceolatus, Orthosiphon latidens, Orthosiphon laurentii,
Orthosiphon liebrechtsiauum, Orthosiphon linraris Benth, Orthosiphon longipes Baker, Orthosiphon
macranthus, Orthosiphon macrocheilus, Orthosiphon macrophyllus, Orthosiphon mairei, Orthosiphon
malosanus Baker, Orthosiphon marmoritis, Orthosiphon marquesii Briq., Orthosiphon menthifolius
Briq and Orthosiphon massinensis
Orthosiphon miserabilis
Orthosiphon molis Baker, Orthosiphon mombasicus, Orthosiphon mossianus, Orthosiphon muddii,
Orthosiphon natalensis and Orthosiphon neglectus
Orthosiphon nigripunctatus
Orthosiphon nyasicus, Orthosiphon obbiadensis, Orthosiphon oblongifolius, Orthosiphon obscurus
and Orthosiphon omatus
Orthosiphon parvifolius
Orthosiphon pascuensis, Orthosiphon persimilis, Orthosiphon petiolaris, Orthosiphon petrensis,
Orthosiphon physocalycinus and Orthosiphon pretoriae
Orthosiphon pseudoaristatus
Orthosiphon pseudomatus, Orthosiphon pseudorubicundus, Orthosiphon pseudoserratus,
Orthosiphon rabaiensis, Orthosiphon reflexus, Orthosiphon rehmannii, Orthosiphon retinervis
and Orthosiphon rhodesianus
Orthosiphon robustus
Orthosiphon rogersii and Orthosiphon roseus
Orthosiphon rubicundus Benth
Orthosiphon rubicundus var. canescene
Orthosiphon rubicundus var.
Orthosiphon rubicundus var. hohenackeri, Orthosiphon rubicundus var. macrocarpus,
hainanensis
Orthosiphon rubicundus var. mollissimus and Orthosiphon rubicundus var. rigidus
Orthosiphon rubicundus var.
Orthosiphon rufinervis and Orthosiphon salagensis
rubicundus
Orthosiphon sarmentotus
Orthosiphon scabridus
Orthosiphon schimperi
Orthosiphon schinzianus, Orthosiphon secundiflorus, Orthosiphon serratus, Orthosiphon shirensis,
Orthosiphon silvicola, Orthosiphon sinensis, Orthosiphon somalensis, Orthosiphon spicatus Baker,
Orthosiphon spicatus Benth, Orthosiphon spiralis, Orthosiphon stamineus, Orthosiphon stenophyllus,
Orthosiphon stuhlmannii, Orthosiphon subvelutinus, Orthosiphon suffrutescene, Orthosiphon tagawae
Orthosiphon tenuiflorus, Orthosiphon tenuifrons, Orthosiphon teucriifolius, Orthosiphon teucriifolius
var. galpinianus, Orthosiphon teucriifolius var. teucriifolius and Orthosiphon thorncroftii
Orthosiphon thymiflorus
Orthosiphon thymiflorus var. viscosus, Orthosiphon tomentosus Benth, Orthosiphon tomentosus
De wild, Orthosiphon tomentosus var. glabratus, Orthosiphon tomentotus var. parviflorus, Orthosiphon
tomentosus var. rubiginosus, Orthosiphon tomentotus var viscosus, Orthosiphon transvaalensis and
Orthosiphon tristis Benth
Orthosiphon truncates
Orthosiphon tuberosus, Orthosiphon tubiformis, Orthosiphon tubulascene, Orthosiphon unyikensis
Orthosiphon usambarensis, Orthosiphon varians and Orthosiphon velteri
Orthosiphon vernalis
Orthosiphon viatorum and Orthosiphon villosus
Orthosiphon violaceus
Orthosiphon virgatus, Orthosiphon viscosus and Orthosiphon welkefieldii
Orthosiphon wattii
Orthosiphon welwitschii, Orthosiphon wilmsii gurke, Orthosiphon wilmsii var. komghensis,
Orthosiphon wilmsii var. wilomsii, Orthosiphon woodii and Orthosiphon xylorrhizus
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Int. J. Biol. Chem., 9 (6): 318-331, 2015
PHYTOCHEMISTRY
These plants generally reported to contain monoterpenes, diterpenes, triterpenes, saponins,
flavonoids, organic acids and etc. Considering the similarity of the chemical constituents of plants
in the same genus. We summarized the phytochemical studies of five investigated plants, including
O. stamineus, O. ariatatus, O. pallidus, O. thymiflorus and O. diffuses. This summary allows an
understanding of the general and phytochemical constituents that has been discovered. It should
also aid in further utilization of the plant resources in this genus. Selected chemical structure
identified in Orthosiphon plants are depicted in Fig. 1.
(a)
H3C
O
O
O
O
H3C
Bzo
Bzo
CH3
AcO
H
CH3
O
HO
OH
CH3
HO
OAc
AcO
H3C
CH3
CH3
H
HO
H3C
H
CH3
HO
H
H
CH3
HO
H3C
H
CH3
CH3
HO
H3C
CH3
CH3
H3C
O
O
CH3
CH3
OH
CH3
H
H
CH3
CH3
H3C
O
H
CH3
H
OAc
(d)
CH3
H3C
H3C
CH3
H
CH3
H3C CH
3
H3C
O
OH
H
CH3
H3C
CH2
CH3
OH
Bzo
Bzo
CH3
O
OH
H
CH3
O
(c)
(b)
CH2
CH3
OH
CH3
OH
CH3
HO
H3C
CH3
(e)
OH
CH3
HO
H3C
CH3
CH3
(f)
CH3
O
H3C
O
Bzo
Bzo
CH3
CH2
H
CH3
OH
AcO
O
CH3
H
AcO
O
OH
HO
AcO
OAc
AcO
CH3
CH2
CH3
OH
Bzo
Bzo
CH3
H
HO
OH
O
OH
H
CH3
HO
CH2
H
CH3
CH3
OH
OH
O
OAc
(h)
OH
O
H
CH3
(g)
OH
O
H
CH3
Bzo
Bzo
CH3
CH2
H
CH3
OAc
H
CH3
Bzo
Bzo
CH3
CH2
O
OAc
Bzo
CH3
CH3
O
Bzo
CH3
OH
O
OH
OAc
Bzo
Bzo
CH3
CH3
AcO
H
CH2
CH3
OH
O
OH
OAc
H
H
CH3
CH3
OH
(i)
O
H
CH3
H
HO
H3C
CH3
(j)
CH3
CH2
CH3
OH C
H
3
CH2
OH
CH3
H
CH3
H3C
O
O
CH3
CH3
O
O
CH3
O
O
H3C
O
O
OH
O
O
CH3
CH3
CH3
CH3
HO
CH3
H3C
CH2
(k)
H3C
OH
H2C
O
CH3
CH3
Fig. 1: Continue
322
O
O
CH3
Int. J. Biol. Chem., 9 (6): 318-331, 2015
OH
(l)
H3C
CH3
O
O
OH
O
O
O
H3C
O
O
O
OH
CH3
CH3
O
OH
H2C
(m)
CH3
CH3
(n)
CH3
HO
O
H
CH3
CH3
O
O
O
O
CH3
CH3
CH3
O
O
CH3
CH3
O
O
CH3
O
CH3
CH3
(o)
CH2
H
CH2 H3C
CH3
H
H3C
CH3
CH3
CH3
H3C
O
(p)
CH3
OH
OH
HO
CH3
H
H3C
CH3
+
N
CH3
H3C
CH3
CH3
+
N
CH3
CH3
(r)
O
(q)
H3C
CH3
OH
H
CH2
H3C
H3C
H3C
CH3
OH
(s)
CH3
CH3
CH3
CH3
H3C
CH3
CH3
O H3C
CH3
CH3
H3C
CH3
CH2
Fig. 1(a-s): Chemical Structures of typical and bioactive constituents isolated from
Orthosiphon species, (a) 3’-hydroxy-5, 6, 7, 4’-tetramethoxyflavoneNeoorthosiphol A,
(b) Neoorthosiphol Bα-amyrin, (c) -amyrinMaslinic acid, (d) Urosolic Acid Oleanolicv
Acid, (e) Orthosiphonone A Orthosiphonone B, (f) Orthosiphol A Orthosiphol B,
(g) Myo-inositol, (h) Neoorthosiphol A Neoorthosiphol B, (i) Betulinic acid -Elemene,
(j) -Caryophyllene Caffeic acid, (k) Sinensetin Tetra-methyl scutellarein, (l) Eupatorin
Cirsimaritin, (m) Acetovanillochromene Orthochromene A, (n) Methylripario Chromene
Agermacrene-D, (o) -Selinen -Cadinol, (p) Choline Betaine, (q) O-cyamenea-terpineol,
(r) LyrolValencene and (s) Nephthalin Camphor -elemene
Moreover, previous research have detected 116 chemical compound have been isolated from
the O. stamineus. They were 3-hdroxy 5, 6, 7, 4 tetramethoxy flavones, 2-O-deacetyl Orthosiphol
J, 4' hydroxyl-5,6,7-trimethoxy flavone, α-cadinol, α-humulene, β-bourbonene, β-caryophyllene,
β-elemene, β-pinene, aurantiamide acetate, caffeic acid depside A-C, cismaritin, eugenol, eupatorin,
ladanein, methylripario chromene A, neoorthosiphol A-B, neoOrthosiphon A, norstaminol A-C,
Othosiphol A-Z, Orthosiphon A-D, pillion, quercetin, rosamarinic acid salvigenin, secoorthosiphol
A-C, siphonol A-E, staminol A-D, ursolic acid, betulinic acid, vomifoliol beta amyrin, α-amyrin,
maslinic acid, oleanolicy acid and other minor constituents (Adnyana et al., 2013; Ameer et al.,
2012; Guerin et al., 1989).
323
Int. J. Biol. Chem., 9 (6): 318-331, 2015
In the case of O. aristatus, the major constituents were sequiterpenes including β-elemene,
β-caryophyllene, orthochromene A, acetovanillochromene, sinensetin, tetramethyl scutellarein,
eupatorin, neoOrthosiphons A and B, Orthosiphones A and B with some minor constituents
(Shibuya et al., 1999; Schut and Zwaving, 1986; Bombardelli, 1972; Lyckander and Malterud, 1992).
In the case of O. pallidus is rich in gemacrene D, β-selinene, α-cadinol, choline, betainine,
Orthosiphonone A and B, Orthosiphol A and B with some minor other constituents (Basu and
Sing, 1956; Basu and Singh, 1956).
Moreover O. thymiflorus and diffuses leaves were identified 33 and 25 compound. Most of the
compounds are terpenoids. Orthosiphon thymiflorus content camphor, o-cymene, α-terpineal,
nephthaline, lyrol, α-elemene and valencene etc.
Other major compound of Orthosiphon diffuses were t-caryophyllene, octocosane, n-eicosane,
limonene, β-ocimene and kauran-18-al and minor compounds were farnesol, calarene, octanol,
β-selive, β-bisebolene, α- terpinolene and methylioso stearate etc. (Sadashiva et al., 2013).
PHARMACOLOGICAL PROPERTIES
Anti-inflammatory activity: Mostly 60-75% of the medicinal species of Orthosiphon reported in
Table 1 have been traditionally used for treatment of inflammation and diseases like arthritis,
bronchitis and rheumatoid. The pharmacological activity of the species of genus Orthosiphon
provides primarily in vivo information for anti-inflammatory effects.
In different studies on O. stamineus methanolic extract on various amount model
suggested that oral administration of methanolic extract of O. stamineus exerted significant
anti-inflammatory activity from 250-1000 mg kgG1 of dose (Ameer et al., 2012).
The activity of chloroform extract was studied on various models like anti-peritoneal capillary
permeability, carrageenan-induced rat paw edema along with in vitro radical scavenging activity.
It was found that oral administration of chloroform extract at 500-1000 mg kgG1 reduced edema and
no dye leakage to the peritoneal cavity (Yam et al., 2010).
Masuda et al. (1992) investigated that isolation of Orthosiphol A and B showed strong inhibitory
activity against the inflammation induced by a tumor promoter on the ears gene targated mice
(Masuda et al., 1992).
Antioxidant activity: Several Orthosiphon species traditionally used for expectorant and
rheumatism indicated antioxidant activity. In different studies of O. stamineus for different extract
(50% hydroalcoholic, distilled water, 50-70% hydroacetone and chloroform extract) was investigated
that for free radical scavenging activity using different model like DPPH, superoxides and xanthin
oxidase that O. stamineus extract showed potential antioxidant activity. The highest activity was
found in hydroacetone extract. Other study found that all the extract had potential antioxidants
comparable to that of some standard antioxidants BHA and quercetin (Adnyana et al., 2013).
Hepatoprotective activity: Yam et al. (2009) reported that pretreatment with methanolic extract
of O. stamineus to hepatoprotective activity in CCL4- induced liver damage in rats. It was
investigated that hepatoprotective effects caused by antioxidants properties (Yam et al., 2007).
Another study Maheswari et al. (2008) investigated that methanol extract of O. stamineus
showed hepatoprotective activity on paracetamol-induced rats. Further, they proposed that
there quality of medicinal plant due to ability to prevent the depletion of the tissue GSH
(Maheswari et al., 2008).
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Anticancer activity: Stampoulis et al. (1999) proposed cytotoxic activity of methanolic extract of
O. stamineus against liver methanolic clon 26-LS carcinoma cells. The isolated compound stamina
lactones A and B and norstaminal a showed mild cytotoxic activity against high malignant live
metal stalic clone carcinoma cells (Stampoulis et al., 1999). Another study Awale et al. (2003a)
investigated the possible cytotoxic activity a compound isolated from japans O. stamineus against
highly malignant liver metastatices murine colon 26-LS carcinoma and human HT-1080
fibrosarcoma cell line (Adnyana et al., 2013).
Antihypertensive activity: The antihypertensive activity of aqueous extract of leaves and
active constituent isolated from O. stamineus benth was examined. Methylripariochromene A
(from aqueous extract of leaves), Orthochromene A, Orthosiphonone A and B and neoorthosiphol
A and B (from CHcl3 fraction of leaves), tetramethylscutell are in posses diuretic action. These
constituents led to decrease in blood pressure and cardiac output. Subcutaneous administration
of aqueous decoction of leaves led to decrease in systolic blood pressure conscious SHRSP. Does
dependent decrease in urinary volume was observed ofter oral administration of isolated
constituents of Orthosiphon stamineus benth urinary excretion of electrolytes was increased
2-3 times. These results confirmed that flavonoids and isopimarane-type compounds contributes
significant antihypertensive activity (Adnyana et al., 213; Ameer et al., 2012).
Koay and Amir (2012) investigated antihypertensive activity of O. stamineus benth in
combination with folic acid, coenzyme-Q, policosanol which indicated effective control of high blood
pressure in patients with metabolic syndrome (Koay and Amir, 2012).
Gastro protective activity: Methanolic extract of leaves of O. stamineus benth posses significant
effects for treatment gastric ailments. Fifty percentage of methanolic extract led to decrease in
ulcer index, gastric mucosa mucosal damage, lipid peroxidation with an increase in mucus
secretion.
The antiulcerogenic activity was investigated in male Sprague Dawley rats against ethanolinduced ulcers. The traces of histological changes, mucosal secretion, Ulcer index and lipid.
Peroxidation level was estimated using both in vitro and ex vivo models. The results showed
significant does dependent gastro protective responces (125-1000 mg kgG1) (Yam et al., 2009).
Antisebum activity: Sebum is an oily waxy matter secreted by exocrine sebaceous gland.
Antisebum activity is observed in plants with phenolic and flavonoidal, terpennidal contents.
O. stamineus benth exhibit prominent antisebum activity. The leaf extracts of O. stamineus decrese
the activity of enzyme 5 α-reductase. The enzyme triggers the secretion of sebum. The extract of
O. stamineus inhibits the synthesis of squaline (30 carbon natural orgaic compound) importent
sebum constituents and help in skin glow there by reducing the oily appearance. Two percentage
of leaf extract of O. stamineus reduces the oily appearance of skin and significantly reduces the pore
size leading to improved skin complexion (Vogelgesang et al., 2011).
Hyperlipidemic acivity: The aqueous extract of O. stamineus benth showed significant
hyperlipidemic activity in diabetic rats. Mariam et al. (1996) investigated the oral admnistration
of aqueous extract of O. stamineus benth on lipid profile in normal and Streptozotocic induced
diabetic male wistar rats (Mariam et al., 1996).
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Nephroprotective activity: Adnyana et al. (2013) investigated the potential of hydroalcoholic
O. stamneus. The study revealed that the plant posses nephroprotective activity significantly at a
dose of 50 mg kgG1. When compared to standard drug hydrochlorothiazide (10 mg kgG1). Similarly
when the methanolic extract of the plant was investigated gentamycin-induced nephrotic model,
A does dependent nephroprotective effect was observed (100-200 mg kgG1) with a steep decrease in
decreased serum creatinine and blood urea level (Adnyana et al., 2013).
Antipyretic activity: Antipyretic study of O. stamineus hydrochloric extract executed a
profound effect from a dose range of 50-1000 mg kgG1 b.wt. The yeast induced pyrexia model was
employed to investigate the effect. Similarly the effect was observed in 50% methanolic extract of
O. stamineus in yeast-induced pyrexia in Sprague Dawley rats was investigated. The study showed
that oral administration of the extract in the range from 450-1000 mg kgG1 led to no reduction in
body temperature, but a significant alleviation of the pyrexia induced by yeasts was observed
(Yam et al., 2008).
Antiangiogenic activity: Plant O. stamineus possess significant anti-angiogenic activity.
Ethanolic extract of O. stamineus showed retarding effect on the colorectal tumor and human
umbical vein endothetical cell formation. Ethanolic extract of the plant at a concentration of
(211±0.26 pg mLG1) inhibited VEGF in vitro and in vivo (53-54) (Sahib et al., 2009; Goodwin, 2007).
Antibacterial activity: The studies on O. stamineus extract showed antibacterial activity on
serotypes c and d of Streptococcus mutans (MIC = 7.8-23.4 mg mLG1). The potency decreased
about one-half for type d but no change was found in type c, with the presence of 5% sucrose
(Chen et al., 1989). Orthosiphon stamineus methanolic extract at concentration of 50% inhibited
Bacillus subtilis, Bacillus cereus, Litseria monocytogenes, Staphylococcus aureus, Escherichia coli,
Vibri parahaemolyticus, Salmonella enteritidis, Salmonella typhimurium and Klebsiella
pneumoniae. This antibacterial activities of O. stamineus may be due to the high concentration of
rosmarinic acid (Hossain et al., 2008).
Whole O. stamineus plant (powdered) methanolic extract demonstrated inhibitory activity
against vibrio parahaemolyticus in vitro. The inhibition showed with O. stamineus extracts was
comparable to the inhibition seen with that of 5% lactic acid; this may be likely due to high
concentration of rosmarinic acid found in the O. stamineus extracts (Ho et al., 2010).
Antidiabetic activity: In oral glucose tolerance test, the water extract at doses of 0.2-1.0 g kgG1
significantly decreased plasma glucose concentration in dose-dependent manner for both normal
and diabetic rats. At a dose of 1.0 g kgG1 showed similar effect with glibenclamide (5 mg kgG1). In
diabetic rats, after they were given the extract orally (0.5 g kgG1) for 14 days, plasma glucose
concentrations were reduced significantly. In addition, plasma triglyceride concentration was also
lower in the extract-treated diabetic rats than that of untreated group. Furthermore, plasma
HDL-cholesterol concentration was significantly increased in diabetic rats treated with the extract.
In perfused rat pancreas, 100 μg mLG1 extract potentiated the glucose-induced insulin secretion
(Sriplang et al., 2007).
Antidiabetic effects of the chloroform, methanol, petroleum ether and water extracts of
Orthosiphon stamineus was studied. Chloroform extract at a dose of 1 g kgG1 b.wt., significantly
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reduced blood glucose level. Further, this extract was fractionated and finally one subfraction
showed similar antidiabetic effect with metformin (Mohamed et al., 2011a).
Diuretic activity: Diuretic activity of O. stamineus hydroalcohol extract from aerial parts was
reported. At a dose of 50 mg kgG1, this extract showed similar effectivity with hydrochlorothiazide
at a dose of 10 mg kgG1 (Beaux et al., 1999).
Other studies reported that a water extract and tincture of leaves enhanced ion excretion of rats
which were not due to the potassium content of the starting material (Englert and Harnischfeger,
1992).
Arafat et al. (2008) studied the diuretic and hypouricemic activity of different O. stamineus
methanol extracts by Sprague, Dawley rats model. A single dose infusion (2 g kgG1) of methanol and
methanol: Water (1:1) extracts possesses significant diuretic action, where the effect was
quantitatively similar to the control, hydrochlorothiazide. Repeated dose of 0.5 g kgG1 of methanol:
water (1:1) extracts showed an increase in diuresis from the third day of treatment. Oral
administration of 0.5, 1.0 and 2.0 g kgG1 of methanol: water (1:1) extracts significantly reduced
serum urate level of hyperuricemic rats at hour 6, whereby the decrease in the uric acid level was
also observed for the standard, allopurinol at hour 6 (Arafat et al., 2008).
Adam et al. (2009) investigated the diuretic effects of Orthosiphon stamineus aqueous extract.
Orally at doses of 5 and 10 mg kgG1 to Sprague, Dawley rats and was compare with furosemide or
hydrochlorothiazide at 10 mg kgG1. Urine pH, urine volume, urine density and urine electrolytes
were determined every hour for 4 h. Blood was assayed for albumin, glucose, Blood Urea Nitrogen
(BUN) and creatinine. Orthosiphon stamineus extract exhibited dose-dependent diuretic activity.
However, Na+ and Cl!excretion was not markedly elevated but urinary excretion of K+ was
significantly increased. Orthosiphon stamineus extracts increased the serum BUN, creatinine and
blood glucose level slightly (Adam et al., 2009).
The diuretic, saluretic and uricosuric actions of 50 and 70% ethanol extracts of O. stamineus
(700 mg kgG1) in rats revealed that the diuretic effect of the 50% ethanolic extract was higher than
that of the 70% ethanolic extract or furosemide. It was characterized by higher absolute excretion
of sodium and lower potassium wasting. Furthermore, the same 50% ethanol extract showed a
relatively higher uricosuric effect. As the hydrophilicity of the extract increases, its diuretic and
uricosuric effects also increase. This may be attributed to the abundance of polyphenols
(Olah et al., 2003).
TOXICITY STUDY
The only toxicity literature and reports on members of the Orthosiphon genus were concerning
O. stamineus. Different studies proved that the possible acute toxicity effects of orally administered
Orthosiphon stamineus plant extract in rats. Acute toxicity was evaluated by LD50 method. No
toxicity was found at a dose of 2 g kgG1 (Padilla et al., 1996).
Another study Mohamed et al. (2011b) proved that standardized 50% ethanol plant extract at
a dose 5 g kgG1 given orally to Sprague Dawley rats did not show an changes in macroscopic and
microscopic. These results were proved that subchronic toxicity. Different concentration of plant
extract (1250-5000 mg kgG1) on male and female Sprague Dawley rats for 4 weeks, showed no
significant changes with control group. The parameters were hematological, organ weight,
biochemical value, macroscopic and microscopic observation of the heart, brain, liver, kidney,
spleen, tests, uterus and stomach (Mohamed et al., 2011a).
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Recently Muhammad et al. (2011) investigated genotoxicity of O. stamineus using salmonellal
microsome mutation and mouse bone marrow micronucleus assays method. The results were
concluded that use of Orthosiphon stamineus in traditional medicine poses no genotoxic risk
(Muhammad et al., 2011).
SUMMARY AND CONCLUSION
In the present review, summarized to congregate traditional use of medicinal plants in the
genus Orthosiphon and research on its phytochemical, pharmacological and toxicological
information on O. aristatus, O. pallidus, O. thymiflorus and O. stamineus, medicinal herbs used
in the India and all over the world.
Survey of literature data provided a practical base for further scientific research on this genus.
In another equally very important to understand if the pharmacological studies on this genus are
available to validate their traditional uses. Preliminary report in experimental studies says that
it is significantly effective in diseases related to gastrointestinal, lungs and liver. Hence the
purpose of this review is to provide comprehensive report about the genus based on its toxicity in
order to identify its therapeutic potential and further prospects for betterment of research and
provides basic knowledge for development of medicinal plants and useful approach for drug
discovery.
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