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Resveratrol, (3,4’,5-trihydroxystilbene) has long been suspected to show a broad range of biological activities of medicinal interest such as anticancer, anti-oxidative, anti-diabetic, anti-aging and anti-inflammatory activities. Piceatannol (3,3’,4’,5-tetrahydroxystilbene) is a hydroxylated analogue of resveratrol and it confirms a lot of similar biological activities as shown by resveratrol. Both resveratrol and piceatannol are very important naturally occurring polyphenolic stilbenes, produced by plants in response to fungal infection, mechanical damage, or ultra-violet irradiation. They can be consumed on a daily basis as they show no harmful effects on human body. They play a significant role in improving human health. Compared with resveratrol, piceatannol is a more potent anticancer agent and preferable agent with other biological activities like antioxidant activity. This article reports biological activities of the two important stilbenes: resveratrol and piceatannol and their possible role in disease prevention.
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Research Article Open Access
Kukreja et al., J Blood Disorders Transf 2014, 5:9
http://dx.doi.org/10.4172/2155-9864.1000240
Review Article Open Access
Blood
Disorders & Transfusion
Volume 5 • Issue 9 • 1000240
J Blood Disorders Transf
ISSN: 2155-9864 JBDT, an open access journal
Therapeutic Role of Resveratrol and Piceatannol in Disease Prevention
Aayush Kukreja1*, Neha Wadhwa2 and Archana Tiwari1
1School of Biotechnology, Rajiv Gandhi Proudyogiki Vishwavidyalaya, Bhopal, India
2Department of Biotechnology, College of Professional Studies, SR Group of Institutions, Bhopal, India
*Corresponding aut hor: Aayush Kukreja, School of Biotechnology, Rajiv Gandhi
Proudyogiki Vishwavidyalaya, Airport Road-Bhopal-462033 Madhya Pradesh, India,
Tel: 0755-2678873; Fax: 0755-2742006; E-mail: aayush_kukreja@yahoo.co.in
Received September 29, 2014; Accepted November 29, 2014; Published
December 05, 2014
Citation: Kukreja A, Wadhwa N, Tiwari A (2014) Therapeutic Role of Resveratrol
and Piceatannol in Disease Prevention. J Blood Disorders Transf 5: 240. doi:
10.4172/2155-9864.1000240
Copyright: © 2014 Kukreja A, et al. This is an open-access article distributed
under the terms of the Creative Commons Attribution License, which permits un-
restricted use, distribution, and reproduction in any medium, provided the original
author and source are credited.
Keywords: Resveratrol; Piceatannol; Polyphenols; Biological
activities
Introduction
Polyphenols are abundant micronutrients that complement and
add to the functions of antioxidants, vitamins and enzymes as a defense
against oxidative stress caused by excess reactive oxygen species. ey
contain phenolic rings in their structure and are found in dierent forms
in nature. ese compounds are classied into dierent groups on the
basis of the number of phenol rings that they contain and structural
elements that are attached to these rings (Figure 1) [1,2].
Resveratrol is the most well characterized stilbenes, having a
trihydroxystilbene skeleton [3,4]. Piceatannol closely resembles
resveratrol in structure [5]. Both piceatannol and resveratrol possess
almost similar biological activities like antioxidant, antiproliferative and
anti-inammatory properties [6]. e importance of these compounds
in disease prevention has been reviewed here.
Resveratrol
Resveratrol (3,4’,5-trihydroxystilbene) is a natural stilbene
containing two aromatic rings in its structure. It is a phytoalexin formed
naturally by 72 dierent plant species, especially pine trees, jackfruit,
mulberry, blueberry, cranberry, grape vines and legumes (Figure 2). It is
found in large amount in peanuts, soybeans and pomegranates [7-10].
Resveratrol exists in two isomeric forms: cis-resveratrol and trans-
resveratrol. e trans form is more stable and potent than the cis form.
Molecular structure of resveratrol consists of two aromatic rings that
are linked together by a methylene double bond (Figure 3) [8].
All the three hydroxyl groups of resveratrol are responsible for
intensive hydrogen-bonding network [10]. Its biological activity is
dependent on the presence of intramolecular hydrogen bonding, double
bond and number and position of hydroxyl groups [11]. Resveratrol
is a fat soluble plant secondary metabolite produced with the help of
enzyme stilbene synthetase [12]. It is known to possess good cancer
chemo preventive properties [10].
Biological Activities of Resveratrol
Resveratrol has many biological roles and dierent mechanisms of
action [13]. It can inhibit the progression of several diseases, including
cardiovascular disease, carcinogenic, neurodegenerative, and prevent
aging process. Resveratrol has found to possess anti-inammatory,
antioxidant and antimicrobial properties [9,13].
Resveratrol as an antioxidant
Recognition of resveratrol as a natural antioxidant agent was
illustrated by Zini et al. [14,15]. Resveratrol possesses both antioxidant
and free radical scavenging activity. It increases the activities of
antioxidant enzymes such as glutathione peroxidase, SOD (superoxide
Abstract
Resveratrol, (3,4’,5-trihydroxystilbene) has long been suspected to show a broad range of biological activities
of medicinal interest such as anticancer, anti-oxidative, anti-diabetic, anti-aging and anti-inammatory activities.
Piceatannol (3,3’,4’,5-tetrahydroxystilbene) is a hydroxylated analogue of resveratrol and it conrms a lot of
similar biological activities as shown by resveratrol. Both resveratrol and piceatannol are very important naturally
occurring polyphenolic stilbenes, produced by plants in response to fungal infection, mechanical damage, or
ultra-violet irradiation. They can be consumed on a daily basis as they show no harmful effects on human body.
They play a signicant role in improving human health. Compared with resveratrol, piceatannol is a more potent
anticancer agent and preferable agent with other biological activities like antioxidant activity. This article reports
biological activities of the two important stilbenes: resveratrol and piceatannol and their possible role in disease
prevention.
Figure 1: Classication of polyphenols.
Citation: Kukreja A, Wadhwa N, Tiwari A (2014) Therapeutic Role of Resveratrol and Piceatannol in Disease Prevention. J Blood Disorders Transf 5:
240. doi: 10.4172/2155-9864.1000240
Page 2 of 6
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J Blood Disorders Transf
ISSN: 2155-9864 JBDT, an open access journal
dismutase), catalase, and glutathione reductase [16]. It also maintains
the level of intracellular antioxidants in the biological systems [15].
Resveratrol as an anticancer agent
Resveratrol is a good anticancer agent known since ages [11].
It inhibits onset and promotion of cancer. It promotes anti-tumoral
activity by inhibiting angiogenesis [17,18]. e anti-cancer eect of
resveratrol is associated with the damage of mitochondrial function
that leads to an increase in ROS (reactive oxygen species), apoptosis
and possibly intracellular drug accumulation via inhibition of proteins
involved in MDR (multi-drug resistance) [19].
Resveratrol as an anti-inammatory agent
Resveratrol exhibits anti-inammatory activity through modulation
of enzymes and pathways that are mostly centered on cyclooxygenases
COX-1 and COX-2. It also suppresses the activity of NF-kB (nuclear
factor kappa light chain enhancer of activated B cells) and I-kB
(inhibitor of kappa) kinase and reduced production of prostaglandin
E2 (PGE2) and ROS in lipopolysaccharide (LPS) -activated microglial
cells [20,21].
Resveratrol as an anti-microbial agent
Resveratrol possesses antimicrobial properties. It inhibits the
growth of some pathogenic microorganism such as gram-positive and
gram-negative bacteria and fungi like Aspergillus niger, Helicobacter
pylori, Aspergillus avus, Candida albicans, Staphylococcus aureus,
Escherichia coli and Pseudomonas aeruginosa [13]. It inhibits the
growth of Escherichia coli via site-specic oxidative damage to the cell
membrane [14]. Resveratrol is a potent antimicrobial agent and may
be used in future for the treatment of infections caused by certain
pathogens [22,23].
Resveratrol as an anti-aging agent
Resveratrol possesses anti-aging activity. Its anti-aging activity
was seen on yeast (Saccharomyces cerevisiae), fruit y (Drosophila
melanogaster) and round worm (Caenorhabditis elegans). Resveratrol
increases genetic expression of SIR2 enzyme, NAD-dependent, sirutuin
class of deacetylase resulting in an increase in the life time of these
species [24].
Resveratrol in cardiovascular protection
Resveratrol possesses cardioprotective eects as it inhibits platelet
aggregation, thromboxane A2 formation (vasodilator eect) and
peroxidase reactions of Cox-1 [25]. It has been observed that even low
doses (such as consumed in the common diet) of resveratrol shows
cardio-protective activity [26].
Resveratrol in cancer prevention
Resveratrol has been reported to inhibit the proliferation of tumors
of breast, colon and prostate cancer. Various mechanisms for the
anticancer action of resveratrol include angiogenesis inhibition, cell
cycle alteration, apoptosis and antioxidant eects. It also suppresses
cytochrome P450 that is considered as procarcinogens [18,25].
Resveratrol in neurological disorder
Resveratrol is a neuroprotective supplement for neurological
disorders like Alzheimer’s disease, Parkinson disease and Huntingtons
disease. It reduces the level of neuronal cell death. It represses p53,
thereby preventing neurons from oxidative damage [25].
Resveratrol in thalassemia
Resveratrol possesses both anti-oxidant and HbF (fetal hemoglobin)
inducing properties. It activates gamma (γ) -globin genes expression
and helps in the production of HbF. is property of resveratrol is
helpful in the treatment of beta thalassemia [27].
Resveratrol in diabetes
Resveratrol has been hypothesized to protect β cells in diabetes. It
has experimentally proved that resveratrol lowers the insulin secretion
in blood. Its inhibitory eect has been proved in hyperinsulinemic
animals [28]. Resveratrol shields against hepatic and renal impairment
in the diabetic patients [29]. is indicates that resveratrol has benecial
role in the prevention and treatment of diabetes [28].
Piceatannol
Piceatannol (3,3’,4’,5-tetrahydroxystilbene) is a naturally occurring
hydroxylated analog of resveratrol (Figure 4). It has two phenol rings
that are linked together by a styrene double bond. It exists in two
isomeric forms: cis- piceatannol and trans- piceatannol. Usually, its
trans isomeric form is more stable as compared to cis form [6,30,31].
It has been identied in various plants specically in passion
fruit (Passiora edulis), Cassia marginata, Melaleuca leucadendron,
Figure 2: Sources of resveratrol.
Figure 3: Chemical structure of resveratrol.
Citation: Kukreja A, Wadhwa N, Tiwari A (2014) Therapeutic Role of Resveratrol and Piceatannol in Disease Prevention. J Blood Disorders Transf 5:
240. doi: 10.4172/2155-9864.1000240
Page 3 of 6
Volume 5 • Issue 9 • 1000240
J Blood Disorders Transf
ISSN: 2155-9864 JBDT, an open access journal
Asian legume (Cassia garrettiana), Rhubarb (Rheum spp.), Euphorbia
lagascae, Mezoneuron cucullatum, Vitis amurensis, Caragana tibetica,
Rheum rhaponticum, Partneocissus tricuspidata, Aiphanes aculeata,
Arachis hypogaea, Vitis thunbergii, Ampelopsis brevipedunculaata and
Vaccinium berries (Figure 5) [6].
Rhodomyrtus tomentosa also known as Sim fruit has been reported
to contain 1000-2000 times higher piceatannol than that found in
red grape [32]. In humans, resveratrol metabolism in the presence of
enzyme CYP1B1 (Cytochrome P450 1B1) produces piceatannol as a
major metabolite (Figure 6) [8].
Biological Activities of Piceatannol
Like resveratrol, piceatannol also has many biological roles and
dierent mechanisms of action. It possesses biological activities like
anticancer, antioxidant, antileukaemic and anti-inammatory activities.
It also possesses property to combat diseases like breast cancer, prostate
cancer, colon cancer, leukemia, lymphoma and melanoma [6].
Piceatannol as an antioxidant agent
e antioxidant activity of piceatannol is due to hydroxyl groups in
its stilbene rings. It has good lipid peroxyl radical scavenging activity.
Semiquinone radical of piceatannol is found to be more stable. Its
antioxidant activity was proved by its ability to suppress the production
of melanin in B16 melanoma cells [6,33].
Piceatannol as an anticancer agent
Piceatannol exhibits anticancer activity due to its potential to
inhibit spread of a vast array of dierent tumor cells, including
lymphoma, leukaemia, breast cancer, prostate cancer, and colon cancer.
It shows growth inhibition and the proapoptic eect on cancer cells.
Its proapoptic eect may be due to loss of mitochondrial potential,
activation of caspases and release of cytochrome C [6].
Its proapoptic activity has been observed in various cancer cells
including skin, prostate, bladder and breast. It possesses cytotoxicity
activity against prostate cancer cells. It inhibits JAK1 (Janus kinase)
activity proving itself to be curative agent for prostate cancer [6]. In
colon and liver cancer, piceatannol has found to be responsible for
accumulation of cells in G1 and S phase of cell cycle [34]. In bladder
cancer, it has been reported that piceatannol induces apoptosis and
obstructs G0/G1 cells progression [35].
Piceatannol as an antileukaemic agent
Piceatannol exhibits antileukaemic activity as its treatment results
in an increase in Fas and FasL protein expression. It induces death of
human leukaemia cells by increasing intracellular Ca2+ concentration,
activating p38 mitogen activated protein kinase (MAPK), inactivating
extracellular regulated kinase (ERK), producing t-Bid and degrading
procaspase-8 in leukaemic cells [6,36].
Piceatannol results in apoptosis, DNA fragmentation, decreased
Bcl-2 and cIAP-2 (anti- apoptic proteins) expression and halt of cells
in sub G1 phase. Up-regulation of Fas/FasL has been reported in
piceatannol treated leukaemic cells [5,37].
Piceatannol as an anti-inammatory agent
Piceatannol shows anti-allergic inammatory activity by regulating
MAPK signaling pathway. It suppresses SyK activity by obstructing
FcεR I-mediated signaling in mast cells [6,38].
Piceatannol as an anti-adipogenic agent
Piceatannol plays a vital role in inhibiting adipogenesis. It
downregulates C/EBP and PPAR (pro-adipogenic transcription factors)
expression. It also inhibits phosphorylation and kinase activity of
signaling pathways including IR and PI3K/Akt pathway [39].
Piceatannol as an antimelanogenic agent
Picetannol upregulates intracellular GSH level and downregulates
GSSG level in B16 cells. It increases GSH/GSSG ratio resulting in an
increase in intracellular reducing power, which plays a pivotal role in
the regulation of melanogenesis. It lowers melanin content without
exhibiting any antagonist eect on cell viability [40].
Figure 4: Chemical structure of piceatannol.
Figure 5: Sources of piceatannol.
Figure 6: Resveratrol metabolism in humans.
Citation: Kukreja A, Wadhwa N, Tiwari A (2014) Therapeutic Role of Resveratrol and Piceatannol in Disease Prevention. J Blood Disorders Transf 5:
240. doi: 10.4172/2155-9864.1000240
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Volume 5 • Issue 9 • 1000240
J Blood Disorders Transf
ISSN: 2155-9864 JBDT, an open access journal
Piceatannol in diabetes
Piceatannol exhibits antidiabetic phytochemical activity. It enhances
glucose uptake, AMPK phosphorylation and glucose transporter 4
(GLUT4) translocation to overcome insulin resistance in diabetic cells.
erefore, it plays a therapeutic role in the prevention of type 2 diabetes
[6,41].
Piceatannol in asthma
Piceatannol, a Syk-selective tyrosine kinase possesses signicant
inhibitory eect in the release of histamine and peptidoleukotriene
from sensitized lung fragments. Syk kinase is an essential upstream
signaling molecule which activates various inammatory cells like T
cells, B cells and monocytes. Its inhibition in inammatory cell may
prove to be benecial in the treatment of asthma [42,43].
Piceatannol in bone formation
Piceatannol induces dierentiation of osteoblasts from its
progenitor stage to well dierentiated osteoblasts. It induces BMP-2
(bone morphogenetic protein-2) expression which increases alkaline
phosphatase and osteocalcin production in the cells. Piceatannol
stimulates BMP2-BMP receptor interaction which is linked with
the production of BMP-2. erefore, piceatannol may be useful in
stimulating osteoblastic activity, which results in bone formation [44].
Biological spectrum of piceatannol and resveratrol
Piceatannol and resveratrol both belong to stilbene family.
ey both can be synthesized by using Perkin’s approach, using
3,5-dihydoxyacetophenone as a starting material [45]. ey share
almost same biological activities such as antioxidant, anti-inammatory,
anticancer and antileukaemic activities (Table 1) [6].
Piceatannol in Alzheimer
Alzheimer’s disease is prevalent neurodegenerative disease in the
elderly people, which eventually lead to death of person suering
from this disease. Studies have shown a relationship between the
consumption of polyphenol rich foods or drinks and the prevention of
Alzheimer’s disease. e results of a recent study provides evidence that
piceatannol have high potential to prevent Alzheimer’s disease [46].
Piceatannol in Cardiovascular Diseases
e frequency of cardiovascular diseases is high in developing and
developed countries. Cardiovascular diseases are responsible for high
rate of mortality. Many drugs are available for treating cardiovascular
diseases and complications associated with it. Intake of functional
foods or dietary supplements for treating cardiovascular diseases has
gained wide acceptance by the general public. Piceatannol is believed to
be eective in preventing cardiovascular diseases such as arrhythmia,
hypercholesterolemia, angiogenesis and atherosclerosis [47].
Pretreatment with piceatannol suppresses cardiac hypertrophy
which has been assessed by expression level of hypertrophy markers,
cross-sectional area and heart weight/body weight ratio. It also inhibits
cardiac hypertrophy induced by lentiviral GATA-6 [48].
Piceatannol in reducing toxic eect of neutrophils
Piceatannol has ability to reduce the toxic eect produced by
neutrophils. It elevates the percentage of early apoptotic neutrophils
and hinders the activity of protein kinase C which is the main regulatory
enzyme in neutrophils. e result indicates that piceatannol may be
used as a complementary medicine in lowering the level of activated
neutrophils [49].
Comparative Biological Properties of Piceatannol and
Resveratrol
Piceatannol is a more active resveratrol analogue due to the presence
of additional hydroxyl group at 3’ position (Table 2). It possesses
stronger anticancer activity than resveratrol [6]. Piceatannol possesses
higher ability to scavenge free radicals as compared to resveratrol
[50]. e presence of an extra hydroxyl group in piceatannol makes it
reactive and more potent antioxidant as compared to resveratrol. e
required concentration of piceatannol to scavenge free radicals is 1200
times lesser than that of resveratrol [6].
Although, resveratrol possesses several benecial eects on human
health as well as in preclusion of many chronic diseases, but its low
Activity Resveratrol Piceatannol
Antioxidant Present Present
Anti-inammatory Present Present
Anticancer Present Present
Antileukaemic Present Present
Table 1: Similar biological activities of resveratrol and piceatannol [11,14-
19,29,32,33,36].
Compound
Position on the ring
3 4 5 3’ 4’ 5’
Resveratrol OH - OH - OH -
Piceatannol OH - OH OH OH -
Table 2: Table showing hydroxyl group positions in resveratrol and piceatannol [6].
Parameters Piceatannol Resveratrol
Nomenclature 3,3′,4′,5-trans-
trihydroxystilbene
3,4′,5-trans-
trihydroxystilbene
Spectrophotometric
analysis in ethanol
Absorbs maximally at
322 nm
Absorbs maximally at
308 nm.
Content in grapes About 4-times lower than
resveratrol
about 4-times higher
than piceatannol
Inhibitory activity Does not inhibit CYP2E1
(Cytochrome P450 2E1)
Inhibits CYP2E1
(Cytochrome P450 2E1)
Scavenging activity
Show stronger activity to
scavenge free radicals.
Higher rate constant of
reaction with linoleate
(LOO•)
Concentration of
piceatannol required to
scavenge O2
•- is 1200
times lower than that of
Resveratrol
Lower rate constant of
reaction with linoleate
(LOO•)
Substrate of
enzyme catechol-O-
methyltransferase
(COMT)
Substrate of
enzyme catechol-O-
methyltransferase (COMT)
due to presence of extra
3’-OH group
Not a substrate of
enzyme catechol-O-
methyltransferase
(COMT)
Inhibition of MRP1-
mediated transport of
2′,7′-bis-(carboxypropyl)-
5(6)-carboxyuorescein
(BCPCF) from
human erythrocytes
Show moderate activity Ineffective
Hormetic effect
Piceatannol-induced
hormetic response has
been reported
Not reported till now
TPA-induced NFkB DNA
binding
Inhibits NFkB DNA binding
to a greater extent
inhibits NFkB DNA
binding to a lesser extent
Table 3: Table showing distinction between piceatannol and resveratrol [6,15,18,25].
Citation: Kukreja A, Wadhwa N, Tiwari A (2014) Therapeutic Role of Resveratrol and Piceatannol in Disease Prevention. J Blood Disorders Transf 5:
240. doi: 10.4172/2155-9864.1000240
Page 5 of 6
Volume 5 • Issue 9 • 1000240
J Blood Disorders Transf
ISSN: 2155-9864 JBDT, an open access journal
bioavailability and rapid metabolism limits its use in the preclusion of
chronic diseases [8]. Table 3 illustrates dissimilarity between resveratrol
and piceatannol.
Piceatannol has much more eective biological activity and
bioavailability as compared to resveratrol. erefore, piceatannol is
gaining more scientic attention than resveratrol for improving health
related diseases. But more studies are needed to prove its eective
diseases saving properties [8,38].
Conclusions
Resveratrol and piceatannol are naturally occurring polyphenolic
compounds with a wide range of biological activities. Resveratrol
plays a signicant role in prevention of diseases, but due to its fast
metabolism in the body and poor bioavailability, it is less preferred.
Piceatannol being a natural analogue of resveratrol, contains additional
hydroxyl group which confers to its more eective biological activities
as compared to resveratrol. In order to make both of these compounds
applicable for clinical use, they should be studied more extensively to
understand their bioavailability, metabolic pathways and toxicity in
humans.
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Citation: Kukreja A, Wadhwa N, Tiwari A (2014) Therapeutic Role of Resveratrol and Piceatannol in Disease Prevention. J Blood Disorders Transf 5:
240. doi: 10.4172/2155-9864.1000240
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J Blood Disorders Transf
ISSN: 2155-9864 JBDT, an open access journal
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Citation: Kukreja A, Wadhwa N, Tiwari A (2014) Therapeutic Role of Resveratrol
and Piceatannol in Disease Prevention. J Blood Disorders Transf 5: 240. doi:
10.4172/2155-9864.1000240
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... In addition to functioning as phytoalexins, a strong focus on stilbene bioproduction research has been implemented in the last decade (Jeandet et al., 2021) due to a large and diverse number of biological activities attributed mainly to t-R, including inhibiting the progression of cardiovascular, carcinogenic, and neurodegenerative diseases as well as the aging process, as confirmed by several in vitro assays (Kukreja et al., 2014). ...
Article
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Stilbenes, particularly trans-resveratrol, play a highly relevant defense role in grapevines as phytoalexin is induced in response to stress. Metabolism and transport of stilbenes can be conveniently investigated in grapevine cell culture since large amounts of trans-resveratrol are accumulated in the extracellular medium upon treatment with the elicitor methylated cyclodextrin, either alone or combined with methyl jasmonate. A proteomic approach on grapevine cell membrane fractions was performed to find trans-resveratrol transporter candidates. The candidate VvABCB15 was functionally characterized. Its stable expression in both yeast and Silybum marianum cells’ heterologous systems led to increased trans-resveratrol transport in these hosts. Transient expression in Vitis cells showed an enhanced absorbent- or elicitor-assisted accumulation of extracellular trans-resveratrol in VvABCB15-expressing or VvGSTU10/VvABCB15-co-expressing cell suspension cultures. Experiments of transient expression in Vitis cell suspensions using light-switchable stilbene synthase (pHYH::VvSTS3) and VvABCB15 further confirmed the candidate’s role as a trans-resveratrol transporter. VvABCB15-YFP fusion proteins in Nicotiana leaf showed localization in the plasma membrane, consistent with a functional role in trans-resveratrol transport. This is the first report to provide evidence for the involvement of an ABC transporter B type, VvABCB15, in trans-resveratrol transport to the extracellular medium of grapevine cells.
... It is an important naturally occurring polyphenolic stilbene, produced by plants in response to fungal infection, mechanical damage, and ultra-violet irradiation. It can be consumed daily with no harmful effects on the human body (Kukreja et al., 2014). Also, PIC is known as a potent scavenger of free radicals due to the hydroxyl groups in its stilbene rings (Rossi et al., 2008;Moustafa et al., 2021). ...
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Background: The natural compound’s alternative and complementary uses have increased hopes for hepatocellular cancer treatment (HCC). Objects: The goal of this study was to see if Piceatannol (PIC) in combination with cisplatin has a synergistic effect on N, N-nitrosodiethylamine (DEN)-induced HCC in rats. Methods: Tissue antioxidant enzymes, malondialdehyde (MDA), and nuclear factor erythroid 2 related factors 2 (Nrf2) and tumor necrosis factor α (TNF-α) gene expression were all measured. Nuclear Factor Kabba B (NF-κB) was also tested, as well as hepatic caspase 3 and NAD (P) H quinone oxidoreductase 1 (NQO1). Liver specimens were subjected to histopathological analysis. Results: When compared to the HCC group, piceatannol and/or cisplatin caused a significant improvement in liver function tests, as well as a significant modulation in Nrf2 gene expression and antioxidant enzyme activities, as well as a significant decrease in tissue MDA, TNF-α, NF-κB levels, NQO1 activity, and prompt and caspase-3 activities. When the PIC and/ or cisplatin combination was compared to each of these compounds alone, the results were substantial. Conclusion: PIC in combination with cisplatin has been shown to have a synergistic anticancer impact through modulating Nrf2 and redox state. In addition, adding PIC to an HCC therapy plan that includes chemotherapeutic medicines may boost the efficacy of cisplatin while reducing its negative effects.
... This compound, renowned for its antioxidant, anti-inflammatory, and anticarcinogenic properties [74,75] naturally occurring in Vitis vinifera and Vaccinium corymbosum [76,77], seems to be the most promising agent for not only extending shelf-life but also potentially enhancing the health-related aspects of preserved beverages. Piceatannol, a hydroxylated analogue of resveratrol naturally occurring in various plants such as V. vinifera and Passiflora edulis, is known for exhibiting strong antimicrobial and antioxidative activity as well as anticancer potential [78][79][80]. Furthermore, the results showed that pterostilbene's antimicrobial action is significantly higher compared to oxyresveratrol, another stilbene that naturally occurs in V. vinifera and Morus alba [81]. In addition to the stilbenes, ferulic acid was the only compound showing anti-yeast activity with MICs ranging from 512 to 1024 µg/mL. ...
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Yeasts are the usual contaminants in fruit juices and other beverages, responsible for the decrease in the quality and shelf-life of such products. Preservatives are principally added to these beverages to enhance their shelf-life. With the increasing consumer concern towards chemical food additives, plant-derived antimicrobials have attracted the attention of researchers as efficient and safer anti-yeast agents. However, the methods currently used for determining their anti-yeast activity are time- and material-consuming. In this study, the anti-yeast effect of plant phenolic compounds in apple and orange juice food models using microtiter plates has been evaluated in order to validate the modified broth microdilution method for screening the antimicrobial activity of juice preservative agents. Among the twelve compounds tested, four showed a significant in vitro growth-inhibitory effect against all tested yeasts (Saccharomyces cerevisiae, Zygosaccharomyces bailii, and Zygosaccharomyces rouxii) in both orange and apple juices. The best results were obtained for pterostilbene in both juices with minimum inhibitory concentrations (MICs) ranging from 32 to 128 μg/mL. Other compounds, namely oxyresveratrol, piceatannol, and ferulic acid, exhibited moderate inhibitory effects with MICs of 256–512 μg/mL. Furthermore, the results indicated that differences in the chemical structures of the compounds tested significantly affected the level of yeast inhibition, whereas stilbenes with methoxy and hydroxy groups produced the strongest effect. Furthermore, the innovative assay developed in this study can be used for screening the anti-yeast activity of juice preservative agents because it saves preparatory and analysis time, laboratory supplies, and manpower in comparison to the methods commonly used.
... PIC exists in both trans and cis-isomeric forms and its trans-isomeric form is more stable as compared to the cis form. 12 Chemical structure of PIC is shown in Figure 2. PIC is a nonpolar compound that is soluble in organic solvents such as dimethyl sulfoxide and ethanol but insoluble in water. It has a molecular weight of 244.24 g/mol and a melting point of 223-226 C. 1,13 PIC shows the maximum absorbance spectra at 322 nm in spectrophotometric analysis. ...
Article
Piceatannol is a naturally occurring hydroxylated resveratrol analogue that can be found in a variety of fruits and vegetables. It has been documented to have a wide range of beneficial effects, including anti-inflammatory, antioxidant, anti-aging, anti-allergic, antidiabetic, neuroprotective, cardioprotective, and chemopreventive properties. Piceatannol has significantly higher antioxidant activity than resveratrol. Piceatannol has been shown in preclinical studies to have the ability to inhibit or reduce the growth of cancers in various organs such as the brain, breast, lung, colon, cervical, liver, prostate, and skin. However, the bioavailability of Piceatannol is comparatively lower than resveratrol and other stilbenes. Several approaches have been reported in recent years to enhance its bioavailability and biological activity, and clinical trials are required to validate these findings. This review focuses on several aspects of natural stilbene Piceatannol, its chemistry, and its mechanism of action, and its promising therapeutic potential for the prevention and treatment of a wide variety of complex human diseases.
... Stilbenes have been proven to possess biological activities like anticancer (Filippis et al., 2017), anti-inflammatory (Dvorakova and Landa, 2017), neuroprotective (Chen et al., 2017), antibacterial , and antifungal properties (Filippis et al., 2019). Resveratrol (RSV) and its hydroxylated analog piceatannol (PIC), two of the best-known stilbenes, also closely resembled in various bioactivities (Kukreja et al., 2013(Kukreja et al., , 2014Banik et al., 2020). However, the low water solubility and bioavailability of either RSV or PIC limit their use in pharmaceutical and other fields (Delmas et al., 2011;Messiad et al., 2013). ...
Article
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Introduction Limitation of pharmaceutical application of resveratrol (RSV) and piceatannol (PIC) continue to exist, there is a need to obtain the superior analogs of two stilbenes with promoted activity, stability, and bioavailability. Microbial transformation has been suggested as a common and efficient strategy to solve the above problems. Methods In this study, Beauveria bassiana was selected to transform RSV and PIC. LC-MS and NMR spectroscopies were used to analyze the transformed products and identify their structures. The biological activities of these metabolites were evaluated in vitro with GPR119 agonist and insulin secretion assays. Single factor tests were employed to optimize the biotransformation condition. Results Three new methylglucosylated derivatives of PIC (1–3) and two known RSV methylglucosides (4 and 5) were isolated and characterized from the fermentation broth. Among them, 1 not only showed moderate GPR119 agonistic activity with 65.9%, but also promoted insulin secretion level significantly (12.94 ng/mg protein/hour) at 1 μM. After optimization of fermentation conditions, the yield of 1 reached 45.53%, which was increased by 4.2-fold compared with the control. Discussion Our work presents that 3-O-MG PIC (1), obtained by microbial transformation, is an effective and safer ligand targeting GPR119, which lays a foundation for the anti-diabetic drug design in the future.
... The chemical structure of resveratrol (3,5,4 0 -trihydroxystilbene) consists in two geometric cis-(or Z-) and trans-(or E-) isomers. Transresveratrol was found to be more stable and aroused much interest because of its important role in protection against various diseases and disorders such as diabetes, ageing, cancer, osteoporosis, and other physiological effects, including antioxidant, antiinflammatory, cardioprotective, neuroprotective and antiviral activities (Kukreja et al., 2014;Salehi et al., 2018;Zhang et al., 2021). Some resveratrol analogues have been identified such as piceatannol, as a hydroxyl derivative, and piceid, as a glucosylated resveratrol (Sales & Resurreccion, 2014). ...
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Trans‐resveratrol is a natural polyphenolic compound, belonging to the class of stilbenes. It is known for its various pharmacological properties but limited bioavailability. Our objective was to evaluate for the first time the effect of an extract of Sargassum vulgare on resveratrol, piceatannol and piceid production in peanut (Arachis hypogaea) sprouts. Treatments with rising concentrations of seaweed extract were assessed in ‘Trabelsia’, ‘Chanfakhi’ and ‘American’ peanut varieties after 7 days of incubation. Liquid chromatography‐mass spectrometry was performed to quantify targeted compounds. Total phenols and flavonoids content, PAL and TAL activity and DPPH radical scavenging activity were also determined. A significant genotype effect was demonstrated, as quite exceptionally, in ‘Trabelsia’ the resveratrol content was increased by a factor 110 by elicitation with 8% extract. Piceatannol, piceid, TPC, TFC, PAL, TAL, and DPPH radical scavenging activity confirmed the same trend. This study provides a new insight into an effective approach to enable the accumulation of resveratrol and its derivatives in peanut sprouts for use as a functional food.
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Oxidative stress and epigenetic alterations, including the overexpression of all class I and II histone deacetylases (HDACs), particularly HDAC2 and HDAC4, have been identified as key molecular mechanisms driving pulmonary fibrosis. Treatment with piceatannol (PIC) or vitamin D (Vit D) has previously exhibited mitigating impacts in pulmonary fibrosis models. The present study investigated the effects of PIC, Vit D, or a combination (PIC-Vit D) on the expression of HDAC2, HDAC4, and transforming growth factor-beta (TGF-β) in the lungs; the phosphatidylinositide-3-kinase (PI3K)/AKT signaling pathway; and the antioxidant status of the lungs. The objective was to determine if the treatments had protective mechanisms against pulmonary fibrosis caused by bleomycin (BLM) in rats. Adult male albino rats were given a single intratracheal dosage of BLM (10 mg/kg) to induce pulmonary fibrosis. PIC (15 mg/kg/day, oral (p.o.)), Vit D (0.5 μg/kg/day, intraperitoneal (i.p.)), or PIC-Vit D (15 mg/kg/day, p.o. plus 0.5 μg/kg/day, i.p.) were given the day following BLM instillation and maintained for 14 days. The results showed that PIC, Vit D, and PIC-Vit D significantly improved the histopathological sections; downregulated the expression of HDAC2, HDAC4, and TGF-β in the lungs; inhibited the PI3K/AKT signaling pathway; decreased extracellular matrix (ECM) deposition including collagen type I and alpha smooth muscle actin (α-SMA); and increased the antioxidant capacity of the lungs by increasing the levels of glutathione (GSH) that had been reduced and decreasing the levels of malondialdehyde (MDA) compared with the BLM group at a p-value less than 0.05. The concomitant administration of PIC and Vit D had a synergistic impact that was greater than the impact of monotherapy with either PIC or Vit D. PIC, Vit D, and PIC-Vit D exhibited a notable protective effect through their antioxidant effects, modulation of the expression of HDAC2, HDAC4, and TGF-β in the lungs, and suppression of the PI3K/AKT signaling pathway.
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Introduction: The present study aimed at all the benefits induced by taking the Mediterranean or Japanese diet among nurses and whether any beneficial differences in intakes between the two diets were considered. Methods: The author searched PubMed and Embase databases for medical subheadings terms and free full text referring to "Diet," "Mediterranean," "Japanese," and "Nurses" before 31st December 2022. Results: A total of 14 studies were included in this scoping review, which better underlined all the benefits implicated in the Mediterranean or Japanese diets assumption and also if there were any differences between the two diets. These eating behaviors were exclusively investigated among nurses. Conclusion: The nursing profession has always been considered the most stressful healthcare activity. However, some important concerns in the regular lifestyle, such as eating and physical activity, might help to live better.
Article
Objective: To investigate the effect and mechanism of piceatannol on cerebral ischemia-reperfusion injury. Methods: The oxygen-glucose deprivation reperfusion (OGD/R) model was constructed in primary cultured suckling rat cortical neuron cells. After 2 h of oxygen-glucose deprivation, the cells were treated with piceatannol for 24 h. The cell survival rate was detected by MTT assay, and the degree of cell damage was detected by intracellular lactate dehydrogenase (LDH) release assay. The activity of superoxide dismutase (SOD) and the content of adenosine triphosphate (ATP) were detected by colorimetric method. The content of reactive oxygen species (ROS) was detected by flow cytometry or observed with inverted fluorescence microscope. The ultrastructure of mitochondria was observed with transmission electron microscopy. Western blotting was used to detect the phosphorylation levels of protein kinase B (AKT) and glycogen synthase kinase (GSK)-3β. Immunofluorescence staining was used to observe the nuclear localization of nuclear factor-erythroid 2-related factor (Nrf) 2. After OGD/R neuron cells were pretreated with Nrf2 inhibitor ML385 for 24 h, the effect of Nrf2 on the improvement of cell activity and antioxidant activity of piceatannol were investigated. Western blotting was used to detect the protein expression levels of Nrf2, heme oxygenase (HO) 1 and NADPH quinone oxidoreductase (NQO) 1. Results: Piceatannol significantly increased the survival rate of OGD/R neurons, decreased LDH release and reactive oxygen species content, increased SOD activity, ameliorated mitochondrial ultrastructural damage, increased mitochondrial membrane potential and ATP level (all P<0.05), increased phosphorylation of AKT and GSK-3β protein, up-regulated the expression of Nrf2, HO-1 and NQO1 protein, increased the nuclear-to-plasma ratio of Nrf2, and promoted the nuclear transfer of Nrf2 (all P<0.05). ML385 could significantly reverse the rescue effect of paclitaxel on the model cells and the regulatory activities of SOD, ROS and LDH (all P<0.05). Conclusion: Piceatannol can regulate Nrf2 by activating GSK-3β signaling pathway, promote its nuclear translocation, exert corresponding antioxidant effect, and protect mitochondrial structure and function in rat neuron cells.
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Antimicrobial therapy is a powerful tool for the treatment of several diseases, and a keystone of modern medical practice. However, the increased resistance of microorganisms to the currently used antimicrobials has created the need to evaluate other agents with potential antimicrobial activity.The phytoalexin resveratrol (3,4',5-trihydroxistilbene) is commonly found in food and drinks, such as wines, grapes, vegetables, berries, peanuts and pistachios. This compound is thought to possess antimicrobial effects, along with antioxidant properties, which are benefic for the prevention of some diseases. This work reviewed the antimicrobial properties of resveratrol towards pathogenic microorganisms and investigated the antibacterial properties of resveratrol against different Helicobacter pylori strains. In addition we analysed different virulence profiles and different susceptibility patterns against the antibiotics that are usually used in anti-H. pylori therapy. Finally, we verified the ability of resveratrol to inhibit activity of the H. pylori urease, the key enzyme in colonization and persistence of this pathogen. Nowadays, the use of natural products as antibacterial agents is a promising area of investigation.
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Epidemiological studies have proven an association between consumption of polyphenols and prevention of Alzheimer's disease, the most common form of dementia characterized by extracellular deposition of amyloid beta plaques. The aim of this study is pharmacological screening of the aqueous alcohol extract of Markhamia platycalyx leaves, Schotia brachypetala leaves and stalks, and piceatannol compared to aqueous alcohol extract of Camellia sinensis leaves as potential Alzheimer's disease drugs. LC-HRESI(-ve)-MS(n) was performed to identify phenolics' profile of Schotia brachypetala stalks aqueous alcohol extract and revealed ten phenolic compounds as first report: daidzein, naringin, procyanidin isomers, procyanidin dimer gallate, quercetin 3-O-rhamnoside, quercetin 3-O-glucuronide, quercetin hexose gallic acid, quercetin hexose protocatechuic acid, and ellagic acid. Alzheimer's disease was induced by a single intraperitoneal injection of LPS. Adult male Swiss albino mice were divided into groups of 8-10 mice each receiving treatment for six days. In vivo behavioral tests (Y maze and object recognition) and in vitro estimation of amyloid beta 42 by ELISA showed significant differences between results of treated and nontreated animals.
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Resveratrol (5-[(E)-2-(4-hydroxyphenyl)ethenyl]benzene-1,3-diol), a redox active phytoalexin with a large number of beneficial activities is also known for antibacterial property. However the mechanism of action of resveratrol against bacteria remains unknown. Due to its extensive redox property it was envisaged if reactive oxygen species (ROS) generation by resveratrol could be a reason behind its antibacterial activity. Employing Escherichia coli as a model organism we have evaluated the role of diffusible reactive oxygen species in the events leading to inhibition of this organism by resveratrol. Evidence for the role of ROS in E. coli treated with resveratrol was investigated by direct quantification of ROS by flow cytometry, supplementation with ROS scavengers, depletion of intracellular glutathione, employing mutants devoid of enzymatic antioxidant defences, induction of adaptive response prior to resveratrol challenge and monitoring oxidative stress response elements oxyR, soxS and soxR upon resveratrol treatment. Resveratrol treatment did not result in scavengable ROS generation in E. coli cells. However, evidence towards membrane damage was obtained by potassium leakage (atomic absorption spectrometry) and propidium iodide uptake (flow cytometry and microscopy) as an early event. Based on the comprehensive evidences this study concludes for the first time the antibacterial property of resveratrol against E. coli does not progress via the diffusible ROS but is mediated by site-specific oxidative damage to the cell membrane as the primary event.
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Beta-thalassemia is a genetic disease caused by either reduced production or complete absence of beta-globin chains. It is characterized by dyserythropoiesis which leads to the development of early erythroid precursor cells into immature erythroblasts. Patients with high level of fetal hemoglobin (HbF) develop less severe symptoms and survive normally. Therefore, augmentation of the level of HbF has been an effective therapeutic approach for patients of beta-thalassemia. Iron overload is the leading cause of mortality in beta-thalassemia. Natural pharmacological agents have been used to stimulate the HbF level and reduce iron overload in patients suffering from this deleterious disease. This is an efficient way to treat beta-thalassemia as it also provides better correlation between in vivo and in vitro synthesis of beta-globin chains in patients. Being economic, it is also affordable for the patients in developing countries. This article reports some natural compounds of plant origin having a therapeutic role in inducing HbF level and possessing chelation therapy in beta-thalassemia patients.
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Phytochemicals present in food have shown significant prospects in the treatment and management of a vast array of human diseases. Resveratrol is a stilbene-type aromatic phytoalexin predominantly found in grapes, peanuts, berries, turmeric, and other food products. Resveratrol has been reported to exhibit several physiological activities including anticancer and anti-inflammatory activities in vitro and in experimental animal models, as well as in humans. Anticancer activity of this compound is mainly due to induction of apoptosis via several pathways, as well as alteration of gene expressions, all leading to a decrease in tumor initiation, promotion, and progression. Resveratrol exhibits anti-inflammatory activity through modulation of enzymes and pathways that produce mediators of inflammation and also induction of programmed cell death in activated immune cells. Resveratrol has been shown to produce no adverse effects, even when consumed at high concentrations. Hence, resveratrol possesses good potential to be used as an adjunctive or alternative therapy for cancer and inflammatory diseases.
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Piceatannol is a phenolic stilbenoid and a metabolite of resveratrol which is found in red wine. Piceatannol (PIC) commonly exhibits anti-inflammatory, antiplatelet and antiproliferative activity. In the present study, the anti-allergic and anti-inflammatory mechanisms of PIC were investigated by examining the effects of PIC on pro‑inflammatory cytokine release and phosphorylation of mitogen-activated protein (MAP) kinases (ERK, JNK and p38) in a human mast cell line. PIC dose-dependently inhibited compound 48/80-induced systemic anaphylaxis and immunoglobulin E-mediated local allergic reactions. PIC reduced the immunoglobulin E (IgE)-mediated local allergic reaction and attenuated histamine release from rat peritoneal mast cells. Histamine and β-hexosaminidase release was markedly decreased dose-dependently by PIC treatment in RBL-2H3 cells. PIC treatments of HMC-1 cells definitely reduced mRNA expression and the release of the pro‑inflammatory cytokines, tumor necrosis factor-α and interleukin-8. MAP kinase phosphorylation was also strongly decreased dose-dependently following PIC treatment. PIC regulated the production of cytokines and histamine in phorbol 12-myristate 13-acetate plus A23187-stimulated mast cells. Thus, PIC may alleviate allergic inflammation and may be a useful therapeutic agent for allergic diseases.
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The incidence of cardiovascular diseases (CVDs) is high in both developed and developing countries. It has a high global rate of mortality and causes heavy social burden. Drugs are available for managing or treating CVDs and its complications. Consumption of dietary supplements or functional foods for reducing the risk of CVDs has also gained wide recognition by the general public. Piceatannol, an analog and metabolite of resveratrol, is a natural stilbene commonly found in the skin of grapes and wine. Piceatannol is believed to be a potent compound with certain cardiovascular therapeutic effects, such as the prevention of hypercholesterolemia, arrhythmia, atherosclerosis, and angiogenesis. It also has vasorelaxation and antioxidant activities. A comprehensive review of piceatannol concludes that piceatannol has the potential to be developed into health products for the cardiovascular system to help modern society reduce the high CVD incidence. However, further investigations are warranted in order to increase the bioavailability and understand the biological mechanisms and safety of using piceatannol. Copyright © 2014 John Wiley & Sons, Ltd.
Article
Piceatannol is found in grapes, passion fruit, and Japanese knotweed. Piceatannol pretreatment suppresses cardiac hypertrophy induced by isoproterenol as assessed by heart weight/body weight ratio, cross-sectional area, and expression of hypertrophic markers. The anti-hypertrophic effect of piceatannol in rat neonatal cardiomyocytes is the same as that in vivo. Piceatannol inhibits lentiviral-GATA6-induced cardiomyocyte hypertrophy. Furthermore, piceatannol blocks the interaction between GATA4 and GATA6 as well as the DNA-binding activity of endogenous GATA6 in the ANP promoter. Our results suggest that piceatannol may be a novel therapeutic agent for the prevention of cardiac hypertrophy.