MyMedR

Displaying all 17 publications

Abstract:

Sort:

Efficacy and safety of Vernonia cinerea (L.) Less. for smoking cessation: A systematic review and meta-analysis of randomized controlled trials

Puttarak P, Pornpanyanukul P, Meetam T, Bunditanukul K, Chaiyakunapruk N

Complement Ther Med, 2018 Apr;37:37-42.
PMID: 29609935 DOI: 10.1016/j.ctim.2018.01.009

BACKGROUND & OBJECTIVE: Several randomized controlled trials have investigated Vernonia cinerea (L.) Less. for smoking cessation but there remains no critical summary of overall findings. This study uses systematic review and meta-analysis to summarize the efficacy and safety of V. cinerea.
METHODS: Nine databases were searched through November 2017. Randomized controlled trials that reported the smoking cessation effect of V. cinerea were included. Data were extracted by two independent researchers. Study quality was assessed using the Cochrane risk of bias and JADAD score. The estimates of pooled effects were calculated as relative risk (RR) with 95% CI using a random-effects model.
RESULTS: Five trials with 347 smokers were included. V. cinerea treatment group was significantly associated with cessation rate higher than that in the control group with no evidence of heterogeneity for both continuous abstinence rate (CAR) at week 8 with risk ratio (RR): 1.69, 95% CI [1.00, 2.86]; week 12 RR: 2.18, 95% CI [1.17, 4.04]) and 7-day point prevalence abstinence rate (PAR) (week 8 RR: 1.51, 95% CI [1.01, 2.27]; week 12 RR: 1.93, 95% CI [1.24, 2.99]) at week 8 and 12, respectively. There was no significant difference of all adverse events between the treatment and the control groups.
CONCLUSION: Our study demonstrates that V. cinerea has potential efficacy for smoking cessation. Further well-design RCTs of standardized V. cinerea compared with standard treatment should be conducted to strengthen this evidence.

Matched MeSH terms: Vernonia*
Fulltext Antioxidant activity of Vernonia cinerea, Peperomia pellucida and the combination of Vernonia cinerea and Peperomia pellucida

Sarini Ahmad Wakid, Nurul Syafiqah Zaharin

Journal of Academia Universiti Teknologi MARA Negeri Sembilan, 2020;8(1):24-28.
MyJurnal

The present study was conducted to evaluate the antioxidant activity of Vernonia cinerea, Peperomia
pellucida and combination of Vernonia cinerea and Peperomia pellucida. These two herbs are pants that
often grow at random in different environments but are not commercialized due to the fact that no
comprehensive study of the importance of their use. The extract was prepared with methanol respectively.
1,1-diphenyl-2-picrylhydrazyl (DPPH) assay were used to study their antioxidant activity. The extracts
were compared with commercial antioxidant, butylated hydroxytoluene (BHT). The highest scavenging
effect from peel extract was presented by Vernonia cinerea with the value of 76.3% scavenging activity
(IC50 = 2.909), followed by the combination of Vernonia cinerea and Peperomia pellucida (71.21%
scavenging activity; IC50 = 5.274) and Peperomia pellucida with value of 68.3% scavenging activity (IC50
= 5.572). BHT showed the lowest IC50 value 1.71 with the scavenging activity 90.0%. Low IC50 value will
indicates the strong ability of the extracts to act as DPPH scavenger.

Matched MeSH terms: Vernonia
Dataset on LC-Q-TOF/MS tentative identification of phytochemicals in the extract of Vernonia amygdalina leaf through positive ionization

Alara OR, Abdurahman NH, Ukaegbu CI, Hassan Z, Kabbashi NA

Data Brief, 2018 Dec;21:1686-1689.
PMID: 30505901 DOI: 10.1016/j.dib.2018.10.159

The tentative identification of bioactive compounds in the extract of Vernonia amygdalina leaf was carried out using positive ionization of Liquid chromatography-mass spectrometry quadrupole time of flight (LC-Q-TOF/MS). The positive ionization is associated with the presence of saponins, flavonoids, alkaloids, terpenoids, and glycosides. Tentative assignments of the secondary metabolites were performed by comparing the MS fragmentation patterns with Waters® UNIFY library which allows positive identification of the compounds based on the spectral match. All the metabolites compounds were estimated and presented in a BPI (Base peak intensity) plot. These data are the unpublished supplementary materials related to "Ethanolic extraction of bioactive compounds from V. amygdalina leaf using response surface methodology as an optimization tool" (Alara et al., 2018).

Matched MeSH terms: Vernonia
Kinetics studies on effects of extraction techniques on bioactive compounds from Vernonia cinerea leaf

Alara OR, Abdurahman NH

J Food Sci Technol, 2019 Feb;56(2):580-588.
PMID: 30906015 DOI: 10.1007/s13197-018-3512-4

Recently, unconventional methods especially microwave-assisted hydrodistillation extraction (MAHE) is being used as an alternative technique for extracting bioactive compounds from plant materials due to its advantages over conventional methods such as Soxhlet extraction (SE). In this study, bioactive compounds were extracted from Vernonia cinerea leaf using both MAHE and SE methods. In addition, the kinetic study of MAHE and SE methods were carried out using first- and second-order kinetic models. The results obtained showed that MAHE can extract higher yield of bioactive compounds from V. cinerea leaf in a shorter time and reduced used of extracting solvent compared with SE method. Based on the results obtained, second-order kinetic models can actually describe the extraction of bioactive compounds from V. cinerea leaf through MAHE with extraction rate coefficient of 0.1172 L/gmin and extraction capacity of 1.0547 L/g as compared to SE with 0.0157 L/gmin and 1.1626 L/g of extraction rate coefficient and extraction capacity, respectively. The gas chromatography-mass spectrometry analysis of the oil showed the presence of numerous heavy fractions in the oil obtained through MAHE as compared with the SE method. Moreover, the electric consumption and environmental impacts analysis of the oil suggested that MAHE can be a suitable green technique for extracting bioactive compounds from V. cinerea leaf.

Matched MeSH terms: Vernonia
Effects of Vernonia cinerea less methanol extract on growth and morphogenesis of Candida albicans

Latha LY, Darah I, Jain K, Sasidharan S

Eur Rev Med Pharmacol Sci, 2011 May;15(5):543-9.
PMID: 21744750

Vernonia (V.) cinerea Less (Asteraceae) have many therapeutic uses in the practice of traditional medicine. The methanol extract of V cinerea, was screened for antiyeast activity against pathogenic yeast Candida albicans.

Matched MeSH terms: Vernonia*
Toxicity study of Vernonia cinerea

Latha LY, Darah I, Jain K, Sasidharan S

Pharm Biol, 2010 Jan;48(1):101-4.
PMID: 20645763 DOI: 10.3109/13880200903046203

The methanol extract of Vernonia cinerea Less (Asteraceae), which exhibited antimicrobial activity, was tested for toxicity. In an acute toxicity study using mice, the median lethal dose (LD(50)) of the extract was greater than 2000 mg/kg, and we found no pathological changes in macroscopic examination by necropsy of mice treated with extract. As well as the oral acute toxicity study, the brine shrimp lethality test was also done. Brine shrimp test LC(50) values were 3.87 mg/mL (6 h) and 2.72 mg/mL (24 h), exhibiting no significant toxicity result. In conclusion, the methanol extract of V. cinerea did not produce toxic effects in mice and brine shrimp.

Matched MeSH terms: Vernonia*
Fulltext Vernonia amygdalina Ethanol Extract Protects against Doxorubicin-Induced Cardiotoxicity via TGFβ, Cytochrome c, and Apoptosis

Syahputra RA, Harahap U, Harahap Y, Gani AP, Dalimunthe A, Ahmed A, et al.

Molecules, 2023 May 24;28(11).
PMID: 37298779 DOI: 10.3390/molecules28114305

Doxorubicin (DOX) has been extensively utilized in cancer treatment. However, DOX administration has adverse effects, such as cardiac injury. This study intends to analyze the expression of TGF, cytochrome c, and apoptosis on the cardiac histology of rats induced with doxorubicin, since the prevalence of cardiotoxicity remains an unpreventable problem due to a lack of understanding of the mechanism underlying the cardiotoxicity result. Vernonia amygdalina ethanol extract (VAEE) was produced by soaking dried Vernonia amygdalina leaves in ethanol. Rats were randomly divided into seven groups: K- (only given doxorubicin 15 mg/kgbw), KN (water saline), P100, P200, P400, P4600, and P800 (DOX 15 mg/kgbw + 100, 200, 400, 600, and 800 mg/kgbw extract); at the end of the study, rats were scarified, and blood was taken directly from the heart; the heart was then removed. TGF, cytochrome c, and apoptosis were stained using immunohistochemistry, whereas SOD, MDA, and GR concentration were evaluated using an ELISA kit. In conclusion, ethanol extract might protect the cardiotoxicity produced by doxorubicin by significantly reducing the expression of TGF, cytochrome c, and apoptosis in P600 and P800 compared to untreated control K- (p < 0.001). These findings suggest that Vernonia amygdalina may protect cardiac rats by reducing the apoptosis, TGF, and cytochrome c expression while not producing the doxorubicinol as doxorubicin metabolite. In the future, Vernonia amygdalina could be used as herbal preventive therapy for patient administered doxorubicin to reduce the incidence of cardiotoxicity.

Matched MeSH terms: Vernonia*
Fulltext Antimicrobial activity of Emilia sonchifolia DC., Tridax procumbens L. and Vernonia cinerea L. of Asteracea family: potential as food preservatives

Yoga Latha, L., Darah, I., Sasidharan, S., Jain, K.

Malays J Nutr, 2009;15(2):223-231.
MyJurnal

Chemical preservatives have been used in the food industry for many years. However, with increased health concerns, consumers prefer additive-free products or food preservatives based on natural products. This study evaluated antimicrobial activities of extracts from Emilia sonchifolia L. (Common name: lilac tassel flower), Tridax procumbens L. (Common name: tridax daisy) and Vernonia cinerea L. (Common name: Sahadevi), belonging to the Asteracea family, to explore their potential for use against general food spoilage and human pathogens so that new food preservatives may be developed. Three methanol extracts of these plants were tested in vitro against 20 bacterial species, 3 yeast species, and 12 filamentous fungi by the agar diffusion and broth dilution methods. The V. cinerea extract was found to be most effective against all of the tested organisms and the methanol fraction showed the most significant (p < 0.05) antimicrobial
activity among all the soluble fractions tested. The minimum inhibitory concentrations (MICs) of extracts determined by the broth dilution method ranged from 1.56 to 100.00mg/mL. The MIC of methanol fraction was the lowest in comparison to the other four extracts. The study findings indicate that bioactive natural products from these plants may be isolated for further testing as leads in the development of new pharmaceuticals in food preservation as well as natural plant-based medicine.

Matched MeSH terms: Vernonia
Fulltext In vivo antidiabetic and acute toxicity of spray-dried Vernonia amygdalina water extract

Yeap, S.K., Beh, B.K., Liang, W.S., Ho, W.Y., Yousr, A.N., Alitheen, N.B.

International Food Research Journal, 2013;20(2):613-616.
MyJurnal

The spray-dried Vernonia amygdalina water extract was evaluated for antidiabetic effect using normoglycaemic, glucose induced hyperglycaemic and streptozotocin induced diabetic mice. This effect was compared with an oral dose of Momordica charantia. Besides, acute toxicity of the extract was also evaluated at concentration 2000 and 5000 mg/kg body weight. The extract was able to reduce blood glucose level in glucose and streptozotocin induced hyperglycaemic mice without causing hypoglycemic effect on fasting normoglycaemic mice. Moreover, mice appeared to be normal and no mortality was observed in the acute toxicity study after treated with up to 5000mg/kg of extract. These results indicated that the spray-dried Vernonia amygdalina water extract was a potential antidiabetic agent which does not induce hypoglycemic and acute toxicity on normal subject.

Matched MeSH terms: Vernonia
Antibacterial activity and morphological changes of Pseudomonas aeruginosa cells after exposure to Vernonia cinerea extract

Latha LY, Darah I, Kassim MJ, Sasidharan S

Ultrastruct Pathol, 2010 Aug;34(4):219-25.
PMID: 20594042 DOI: 10.3109/01913121003651513

The antibacterial activity of Vernonia cinerea (L.) extract was investigated using the broth dilution method. The extract showed a favorable antimicrobial activity against Pseudomonas aeruginosa with a minimum inhibition concentration (MIC) value of 3.13 mg/mL. V. cinerea extract at (1/2), 1, or 2 times the MIC significantly inhibited bacterial growth with a noticeable drop in optical density (OD) of the bacterial culture, thus confirming the antibacterial activity of the extract on P. aeruginosa. Imaging using scanning (SEM) and transmission (TEM) electron microscopy was done to determine the major alterations in the microstructure of the extract-treated P. aeruginosa. The main abnormalities noted via SEM and TEM studies were the alteration in morphology of the bacterial cells. The main reason for this destruction was the severe alterations of the cell wall with the formation of holes, invaginations, and morphological disorganization caused by the extract. The authors conclude that the extract may be used as a candidate for the development of antimicrobial agents.

Matched MeSH terms: Vernonia/chemistry*
Fulltext In vitro Anticancer Effects of Vernonia amygdalina Leaf Extract and Green-Synthesised Silver Nanoparticles

Joseph J, Khor KZ, Moses EJ, Lim V, Aziz MY, Abdul Samad N

Int J Nanomedicine, 2021;16:3599-3612.
PMID: 34079252 DOI: 10.2147/IJN.S303921

Purpose: Vernonia amygdalina (VA) is a traditional African herbal medicine that has been reported to possess anticancer properties. However, the anticancer properties of VA silver nanoparticles have not been studied. The aim of the study was to examine and evaluate the anticancer activities of VA leaf extracts and VA silver nanoparticles on the human breast cancer cell line, MCF-7.
Methods: VA leaves were extracted using sequential extraction assisted with ultrasound using three different solvents: ethanol, 50% ethanol, and deionized water. The silver nanoparticles were synthesised with VA aqueous extract.
Results: The ethanol extract and VA silver nanoparticles inhibit MCF-7 cell proliferation with an average half-maximal inhibitory concentration (IC50) value of 67µg/mL and 6.11µg/mL, respectively, after 72 hours of treatment. The ethanol extract and VA silver nanoparticles also caused G1 phase cell cycle arrest, induced apoptosis and nuclear fragmentation in MCF-7 cells.
Conclusion: VA ethanol extracts and VA silver nanoparticles decreased the cell viability in MCF-7 cells in a time and dose-dependent manner by inducing apoptosis and causing DNA damage. Further research is needed to elucidate the mechanism of action of VA leaf extracts and VA silver nanoparticles. This study is the first to report on the anticancer activity of VA silver nanoparticles in MCF-7 cells.

Matched MeSH terms: Vernonia/chemistry*
Fulltext Vasorelaxant properties of Vernonia amygdalina ethanol extract and its possible mechanism

Ch'ng YS, Loh YC, Tan CS, Ahmad M, Asmawi MZ, Wan Omar WM, et al.

Pharm Biol, 2017 Dec;55(1):2083-2094.
PMID: 28832263 DOI: 10.1080/13880209.2017.1357735

CONTEXT: Vernonia amygdalina Del. (VA) (Asteraceae) is commonly used to treat hypertension in Malaysia.
OBJECTIVE: This study investigates the vasorelaxant mechanism of VA ethanol extract (VAE) and analyzes its tri-step FTIR spectroscopy fingerprint.
MATERIALS AND METHODS: Dried VA leaves were extracted with ethanol through maceration and concentrated using rotary evaporator before freeze-dried. The vasorelaxant activity and the underlying mechanisms of VAE using the cumulative concentration (0.01-2.55 mg/mL at 20-min intervals) were evaluated on aortic rings isolated from Sprague Dawley rats in the presence of antagonists.
RESULTS: The tri-step FTIR spectroscopy showed that VAE contains alkaloids, flavonoids, and saponins. VAE caused the relaxation of pre-contracted aortic rings in the presence and absence of endothelium with EC50 of 0.057 ± 0.006 and 0.430 ± 0.196 mg/mL, respectively. In the presence of Nω-nitro-l-arginine methyl ester (EC50 0.971 ± 0.459 mg/mL), methylene blue (EC50 1.203 ± 0.426 mg/mL), indomethacin (EC50 2.128 ± 1.218 mg/mL), atropine (EC50 0.470 ± 0.325 mg/mL), and propranolol (EC50 0.314 ± 0.032 mg/mL), relaxation stimulated by VAE was significantly reduced. VAE acted on potassium channels, with its vasorelaxation effects significantly reduced by tetraethylammonium, 4-aminopyridine, barium chloride, and glibenclamide (EC50 0.548 ± 0.184, 0.158 ± 0.012, 0.847 ± 0.342, and 0.304 ± 0.075 mg/mL, respectively). VAE was also found to be active in reducing Ca2+ released from the sarcoplasmic reticulum and blocking calcium channels.
CONCLUSIONS: The vasorelaxation effect of VAE involves upregulation of NO/cGMP and PGI2 signalling pathways, and modulation of calcium/potassium channels, and muscarinic and β2-adrenergic receptor levels.

Matched MeSH terms: Vernonia*
Antioxidant versus anti-diabetic properties of leaves from Vernonia amygdalina Del. growing in Malaysia

Atangwho IJ, Egbung GE, Ahmad M, Yam MF, Asmawi MZ

Food Chem, 2013 Dec 15;141(4):3428-34.
PMID: 23993503 DOI: 10.1016/j.foodchem.2013.06.047

The antioxidant and anti-diabetic properties of the sequential extracts of Vernonia amygdalina based on the chemical composition of the most effective anti-diabetic extract were studied. Using DPPH and ABTS radical scavenging as well as FRAP assays, the extracts showed a consistent dose-dependent trend of potent antioxidant activity in the following solvents: water extract>methanol extract>chloroform extract>and petroleum ether extracts. In the oral glucose tolerance test, the chloroform extract exerted the highest response (33.3%), similar to metformin (27.2%), after 2h compared to the control (50.8%, P<0.05). After a 14-day administration in diabetic rats, the chloroform extract recorded the highest blood (23.5%) and serum (21.4%) glucose-lowering effects (P<0.05). GC-MS analysis of the chloroform extract revealed high levels of linoleic acid (4.72%), α-linolenic acid (10.8%) and phytols (12.0%), as well as other compounds.

Matched MeSH terms: Vernonia/chemistry*
Fulltext Medicinal Plants in COVID-19: Potential and Limitations

Lim XY, Teh BP, Tan TYC

Front Pharmacol, 2021;12:611408.
PMID: 33841143 DOI: 10.3389/fphar.2021.611408

Currently, the search to identify treatments and vaccines for novel coronavirus disease (COVID-19) are ongoing. Desperation within the community, especially among the middle-and low-income groups acutely affected by the economic impact of forced lockdowns, has driven increased interest in exploring alternative choices of medicinal plant-based therapeutics. This is evident with the rise in unsubstantiated efficacy claims of these interventions circulating on social media. Based on enquiries received, our team of researchers was given the chance to produce evidence summaries evaluating the potential of complementary interventions in COVID-19 management. Here, we present and discuss the findings of four selected medicinal plants (Nigella sativa, Vernonia amygdalina, Azadirachta indica, Eurycoma longifolia), with reported antiviral, anti-inflammatory, and immunomodulatory effects that might be interesting for further investigation. Our findings showed that only A. indica reported positive antiviral evidence specific to the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) based on preliminary in silico data while all four medicinal plants demonstrated differential anti-inflammatory or immunomodulatory effects. The definitive roles of these medicinal plants in cytokine storms and post-infection complications remains to be further investigated. Quality control and standardisation of medicinal plant-based products also needs to be emphasized. However, given the unprecedented challenges faced, ethnopharmacological research should be given a fair amount of consideration for contribution in this pandemic.

Matched MeSH terms: Vernonia
Fulltext Vernonia cinerea regenerates tubular epithelial cells in cisplatin induced nephrotoxicity in cancer bearing mice without affecting antitumor activity

Amuthan A, Devi V, Shreedhara CS, Rao V, Jasphin S, Kumar N

J Tradit Complement Med, 2021 May;11(3):279-286.
PMID: 34012874 DOI: 10.1016/j.jtcme.2020.08.004

Background: Traditional Siddha Medicine advises using metal-based formulations to treat cancers. In the case of any toxicities during the therapy, Siddha physicians use Vernonia cinerea (VC) whole plant kashayam (crude aqueous extract-CAE) to reverse the toxic effects.
Aim: To evaluate the nephroprotective activity of CAE and its fractions in cisplatin-induced nephrotoxicity and to assess whether they compromise the anticancer efficacy of cisplatin.
Materials and methods: Cisplatin-induced renal damage was induced in Ehrlich Ascites Carcinoma (EAC) bearing mice during mild phase of tumor growth. CAE and its butanol (BF) and aqueous (AF) fractions were administered orally from the 5th day for five days. Nephroprotective potential (serum urea, creatinine, renal histology) and effect of VC on cisplatin anticancer efficacy (tumor volume, viable tumor cells, percentage increase in life span (% ILS)) were calculated.
Result: CAE and its fractions significantly reversed the cisplatin-induced renal damage. CAE and BF treated animals showed regeneration of 50%-75% of proximal tubular cells. Compared to EAC control mice, the % ILS of the cisplatin-treated group was 244% and it was further extended to 379% after CAE administration. The % ILS in the CAE treated group was 1.6 times higher than the cisplatin alone treated group. GC-MS study showed the presence of astaxanthin and betulin.
Conclusion: CAE of VC reverses cisplatin-induced kidney damage as well as regenerates proximal tubular epithelial cells, without compromising the anticancer effect of cisplatin. When CAE was further fractionated, the nephroprotective activity was retained, but the beneficial anticancer effect of cisplatin was compromised.

Matched MeSH terms: Vernonia
Fulltext Vernonia amygdalina simultaneously suppresses gluconeogenesis and potentiates glucose oxidation via the pentose phosphate pathway in streptozotocin-induced diabetic rats

Atangwho IJ, Yin KB, Umar MI, Ahmad M, Asmawi MZ

BMC Complement Altern Med, 2014;14:426.
PMID: 25358757 DOI: 10.1186/1472-6882-14-426

This study evaluated the impact of Vernonia amygdalina (VA) on the transcription of key enzymes involved in cellular modulation of glucose in streptozotocin-induced diabetic rats in a bid to understand the possible anti-diabetic mechanism of VA.

Matched MeSH terms: Vernonia*
Vernonia amygdalina inhibited osteoarthritis development by anti-inflammatory and anticollagenase pathways in cartilage explant and osteoarthritis-induced rat model

Madzuki IN, Lau SF, Abdullah R, Mohd Ishak NI, Mohamed S

Phytother Res, 2019 Jul;33(7):1784-1793.
PMID: 31033070 DOI: 10.1002/ptr.6366

Vernonia amygdalina (VA) is a medicinal tropical herb for diabetes and malaria and believed to be beneficial for joint pains. The antiosteorthritis effects of VA leaf in cartilage explant assays and on postmenopausal osteoarthritis (OA) rat model were investigated. The VA reduced the proteoglycan and nitric oxide release from the cartilage explants with interleukin 1β (IL-1β) stimulation. For the preclinical investigation, ovariectomized (OVX) female rats were grouped (n = 8) into nontreated OA, OA + diclofenac (5 mg/kg), OA + VA extract (150 and 300 mg/kg), and healthy sham control. Monosodium iodoacetate was injected into the knee joints to accelerate OA development. After 8 weeks, the macroscopic, microscopic, and histological images showed that the OA rats treated with VA 300 mg/kg and diclofenac had significantly reduced cartilage erosions and osteophytes unlike the control OA rats. The extract significantly down-regulated the inflammatory prostaglandin E2, nuclear factor κβ, IL-1β, ADAMTS-5, collagen type 10α1, and caspase3 in the OVX-OA rats. It up-regulated the anti-inflammatory IL-10 and collagen type 2α1 mRNA expressions, besides reducing serum collagenases (MMP-3 and MMP-13) and collagen type II degradation biomarker (CTX-II) levels in these rats. The VA (containing various caffeoyl-quinic acids, flavanone-O-rutinoside, luteolin, apigenin derivative and vernonioside D) suppressed inflammation, pain, collagenases as well as cartilage degradation, and improved cartilage matrix synthesis to prevent OA.

Matched MeSH terms: Vernonia

Filters

Please provide feedback to Administrator ([email protected])

External Links