A summer study was conducted during 2007 using instrumented shade structures in conjunction with meteorological measurements to estimate relative effectiveness of various shade materials. Shade structures were 3.6 m by 6.0 m by 3.0 m high at the peak and 2.0 m high at the sides. Polyethylene shade cloth was used in three of the comparisons and consisted of effective coverings of 100%, 60% with a silver reflective coating, and 60% black material with no reflective coating. Additionally, one of the structures was fitted with a poly snow fence with an effective shade of about 30%. Each shade structure contained a solar

radiation meter and a black globe thermometer MAPK inhibitor to measure radiant energy received under the shade material. Additionally, meteorological data were collected as a non-shaded treatment and included temperature, humidity, wind speed, and solar radiation. Data analyses was conducted using a physiological model based on temperature, humidity, solar radiation and wind

speed; a second model using black globe temperatures, relative humidity, and wind speed was used as well. Analyses of the data revealed that time spent in the highest stress category was reduced by all shade materials. Moreover, significant differences (P < 0.05) existed between all shade materials (compared to no-shade) for hourly summaries during peak daylight hours and for ‘full sun’ days.”
“Anodic oxide nanostructures (nanopores and nanotubes) were fabricated on a biomedical beta-type titanium alloy, Ti-29Nb-13Ta-4.6Zr Taselisib supplier alloy (TNTZ), by anodization in order to improve the adhesive strength of a medical polymer, segmented polyurethane (SPU), to TNTZ. TNTZ was anodized in 1.0 M H3PO4 solution Anlotinib order with 0.5 mass% NaF using a direct-current power supply at a voltage of 20 V. A

nanoporous structure is formed on TNTZ in the first stage of anodization, and the formation of a nanotube structure occurs subsequently beneath the nanoporous structure. The nanostructures formed on TNTZ by anodization for less than 3600 s exhibit higher adhesive strengths than those formed at longer anodization times. The adhesive strength of the SPU coating on the nanoporous structure formed on top of TNTZ by anodization for 1200 s improves by 144% compared to that of the SPU coating on as-polished TNTZ with a mirror surface. The adhesive strength of the SPU coating on the nanotube structure formed on TNTZ by anodization for 3600 s increases by 50%. These improvements in the adhesive strength of SPU are the result of an anchor effect introduced by the nanostructures formed by anodization. Fracture occurs at the interface of the nanoporous structure and the SPU coating layer. In contrast, in the case that SPU coating has been performed on the nanotube structure, fracture occurs inside the nanotubes. (C) 2013 Elsevier B.V. All rights reserved.”
“Meibomian gland dysfunction is a leading cause of ocular surface disease.

He was then confirmed as a responder. After the operation, the gait difficulties were almost fully resolved. Further studies developing the standard procedure of the CSFTT should be considered.”
“Perfluorooctanoate (PFOA) and perfluorooctanesulfonate (PFOS) are surfactants that

have been used for various industrial and consumer applications. The widespread exposure and persistence of PFOA and PFOS in humans have caused these chemicals to be the subject of intense kinetic and toxicity studies. To identify the biological determinants of the species different in elimination observed in kinetic studies, we incorporated time-dependent descriptions for free fraction in plasma and for volume of distribution into an earlier pharmacokinetic BTK inhibitor ic50 model to simulate the time course behaviors of PFOA and PFOS in monkeys and rats. The structurally similar model for monkeys and rats also allows for examination https://www.selleckchem.com/products/ve-821.html of the complex kinetics observed in animal studies. A higher estimated liver:blood partition coefficient in the rat and additional binding in rat liver suggest that PFOS retention in liver occurs in rats but not in monkeys. Higher liver:blood partition coefficient and renal filtration suggest that PFOS is retained longer in tissues compared to PFOA. A much lower renal resorption may explain

the fast elimination of PFOA from plasma observed in female compared to male rats. Understanding these cross-species, cross-compound, and cross-gender difference is an important step in the future development of a human model for these compounds. (C) 2007 Elsevier Ireland Ltd. All rights reserved.”
“A novel method for the efficient discovery of new types of minor actinide (MA) ligands is based on the unique combination of “tea bag” split pool combinatorial chemistry and screening based on the inherent radioactivity of the complexed cations. Four multicoordinating AM(3+) chelating groups, such as CMPO (diphenylcarbamoylmethyl)phosphine oxide), PICO (picolinamide), DGA (N,N’-dimethyldiglycoldiamide),and MPMA (N-methyl-N-phenylmalonamide),

on a trityl platform immobilized on TentaGeIS served as a model library 17-AAG mw for. the development of the screening method. This model library was screened under various conditions (i.e., 0.001 M <= [HNO(3)] <= 3 M, NaNO(3) <= 4 M, and [Eu] <= 10 x [ligand]) showing competitive extraction of the tour ligands. Other libraries of 9 and 72 members were synthesized by functionalization of the trityl platform with ligating groups that are composed of four building blocks (including at least one amide and one (phosphoric) hydrazone moiety). The screening of these two libraries resulted in the discovery of two multicoordinate ligands that contain ligating groups previously not known to complex AM(3+). Both are N-isopropyl amides terminated with a p-methoxyphenyl hydrazide (A(2)B1C1D10 K(D)(Am) = 2197) or a p-nitrophenyl hydrazide (A2B1C1D11 K(D)(Am) = 1 989) moiety, respectively.

Recognition of the extra-hematopoietic biologic actions of erythropoietin is a result of the better understanding of its interaction with Epo receptors in several tissues and organ systems, during fetal development as well

as in the adult organism. More specifically, antiapoptotic, anti-inflammatory, angiogenetic and cytoprotective effects have been revealed in the kidneys, cardiovascular system, brain and retina. Until future studies are able to clarify the multiple beneficial or unfavorable effects of Epo, it is advisable to remain prudent in its administration, yet optimistic about its possible contribution in a number of pathologic conditions. Hippokratia 2011; 15 (2): 109-115″
“Although renal trauma is increasingly managed nonoperatively, severe renovascular injuries occasionally require nephrectomy. Long-term

outcomes after trauma nephrectomy are unknown. We hypothesized that the risk of LY2603618 end-stage renal disease (ESRD) is minimal after trauma nephrectomy. We conducted a retrospective review of the following: 1) our university-based, urban trauma center database; 2) the National Trauma Data Bank (NTDB); 3) the National Inpatient Sample (NIS); and 4) the U. S. Renal Data System (USRDS). Data were compiled to estimate the risk of ESRD after trauma nephrectomy in the United States. Of the 232 patients who sustained traumatic renal injuries at our SBC-115076 price institution from 1998 to 2007, 36 (16%) underwent a nephrectomy an average of approximately four nephrectomies per year. The NTDB reported 1780 trauma nephrectomies from 2002 to 2006, an average of 356 per year. The 2005 NIS data estimated that in the United States, over 20,000 nephrectomies

are performed annually for renal cell carcinoma. The USRDS annual incidence of ESRD requiring hemodialysis is over 90,000, of which 0.1 per cent (100 per year) of renal failure is the result of traumatic or surgical loss of a kidney. Considering the large number of nephrectomies performed for cancer, we estimated the risk of trauma nephrectomy causing renal failure that requires dialysis to be 0.5 per cent. National data regarding the etiology of renal failure among patients with ESRD reveal CBL0137 cost a very low incidence of trauma nephrectomy (0.5%) as a cause; therefore, nephrectomy for trauma can be performed with little concern for long-term dialysis dependence.”
“Inappropriate seizure management may result in high morbidity and mortality. We assessed the adherence of health professionals in southern Rwanda to a national protocol for pharmacological management of seizures in children. A questionnaire featuring a 5-year-old child with generalized prolonged seizures was administered. The questions focused on the choice of initial treatment and the sequence of management following failure of the initial treatment choice. Benzodiazepine was chosen as initial therapy by 93.7% of physicians and 90.9% of nurses.

The combined administration of baicalin and geniposide significantly reduced atherosclerotic lesions, and modulated the phenotype of dendritic cells in bone marrow and atherosclerotic plaque. Geniposide lowered both plasma lipid levels and DC numbers, while baicalin administered either alone or in combination with geniposide did not decrease plasma lipids. Our results suggest that baicalin and geniposide may have immune-regulatory effects and prevent the formation of atherosclerotic lesions by decreasing the DC numbers, and inhibit DC

maturation in bone marrow and infiltration HSP990 into lesions. (C) 2014 Elsevier B.V. All rights reserved.”
“Background. Recent reports indicated high miltefosine treatment failure rates for visceral leishmaniasis (VL) on the Indian subcontinent. To further explore the pharmacological factors associated with these treatment failures, a population pharmacokinetic-pharmacodynamic study was performed to examine the relationship

between miltefosine drug exposure and treatment failure in a cohort of Nepalese patients with VL. Methods. Miltefosine steady-state blood concentrations at the end of treatment were analyzed using liquid chromatography tandem mass spectrometry. A population pharmacokinetic-pharmacodynamic analysis was performed using nonlinear mixed-effects modeling and a logistic regression model.

Individual estimates of miltefosine exposure were explored for their relationship with treatment failure. Results. The overall probability of treatment failure click here was 21%. The time that the blood concentration was bigger than 10 times the half maximal effective concentration of miltefosine (median, 30.2 days) was significantly associated with treatment failure: each 1-day decrease in miltefosine exposure was associated with a 1.08-fold (95% confidence interval, 1.01-1.17) increased odds of treatment failure. Conclusions. Achieving a sufficient exposure to miltefosine is a significant and critical factor for VL treatment success, Tariquidar research buy suggesting an urgent need to evaluate the recently proposed optimal allometric miltefosine dosing regimen. This study establishes the first evidence for a drug exposure-effect relationship for miltefosine in the treatment of VL.”
“Objective: Previously, we reported that enhancer of polycomb1 (Epc1) induces skeletal muscle differentiation through the serum response factor (SRF). Considering that SRF plays a critical role in vascular smooth muscle cell (VSMC) differentiation, we expected that Epc1 also works in VSMCs. Here we examined the effect of Epc1 on neointima formation after arterial balloon injury and the underlying mechanism.\n\nMethods: Epc1 expression was examined in carotid artery injury or VSMC models.

The present work provides proof of the concept that modulation of the c-di-GMP level in bacteria is a viable strategy for biofilm control.”
“Symptoms of depression can be induced in humans through blockade of acetylcholinesterase (AChE) whereas antidepressant-like effects can be produced in animal models and some clinical trials by limiting activity of acetylcholine (ACh) receptors. Thus, ACh signaling

could contribute to the etiology of mood regulation. To test this hypothesis, we administered the AChE inhibitor physostigmine to mice and demonstrated an increase in anxiety- and depression-like behaviors that was reversed LY2835219 inhibitor by administration of nicotinic or muscarinic antagonists. The behavioral effects of physostigmine were also reversed by administration of the selective serotonin reuptake inhibitor find more fluoxetine. Administration of fluoxetine also increased AChE activity throughout the brain, with the greatest change in the hippocampus. To determine whether cholinergic signaling in the hippocampus could contribute to the systemic effects of cholinergic drugs, we infused physostigmine or virally delivered shRNAs targeting AChE into the hippocampus.

Both pharmacological and molecular genetic decreases in hippocampal AChE activity increased anxiety- and depression-like behaviors and decreased resilience to repeated stress in a social defeat paradigm. The behavioral changes due to shRNA-mediated knockdown www.selleckchem.com/products/mk-5108-vx-689.html of AChE were rescued by coinfusion of an shRNA-resistant AChE transgene into the hippocampus and reversed by systemic administration of fluoxetine. These data demonstrate that ACh signaling in the hippocampus promotes behaviors related to anxiety and depression. The sensitivity of these effects to fluoxetine suggests that shRNA-mediated knockdown of hippocampal AChE represents a model for anxiety- and depression-like phenotypes.

Furthermore, abnormalities in the cholinergic system may be critical for the etiology of mood disorders and could represent an endophenotype of depression.”
“AimNon-steroidal anti-inflammatory drug (NSAID) use is widespread and associated with gastrointestinal symptoms and complications. The aims of this study were to assess (i) gastrointestinal symptoms in users of prescribed and over-the-counter (OTC) NSAIDs and (ii) proton pump inhibitor (PPI) co-prescription rates in NSAID users at increased risk for gastrointestinal complications.\n\nMethodsSurveys were sent to a randomly selected sample of the adult Dutch general population in December 2008. Questions included demographics, gastrointestinal symptoms, medication use and comorbidity. Main outcome measure was presence of gastrointestinal symptoms.\n\nResultsA total of 18,317 surveys were returned (response rate 35%), of which 16,758 surveys were eligible for analysis. Of these, 3233 participants (19%) reported NSAID use. NSAID users more frequently reported gastrointestinal symptoms than persons not using NSAIDs (33% vs. 24%, p<0.01).

The dendritic polyethylene cores containing one

pyrene label per polymer molecule were prepared through a one-step transition-metal-catalyzed polymerization using a pyrene-labeled Pd(II)-alpha-diimine chain walking catalyst. A series of pyrene-labeled dendritic scaffolds were obtained with different molecular weights and sizes. NHS active end groups were introduced to the periphery of the dendritic scaffolds through end-group functionalization. Those NHS-functionalized dendritic scaffolds were successfully XMU-MP-1 cell line used to conjugate a model protein, ovalbumin, to yield protein-polymer conjugates carrying multiple copies of protein attached to each scaffold.”
“This study tested whether elevated maternal beta-hydroxybutyrate (beta-OHB) levels contribute to polycythaemia Pevonedistat datasheet in infants of diabetic mothers.

Pregnant diabetic women (n = 27) and non-diabetic controls (n = 20) and their singleton infants were included. Maternal glycosylated haemoglobin and beta-OHB levels were studied at 34 – 36 weeks’ gestation; levels were significantly higher in mothers with diabetes than in controls. Birth weights and cord blood levels of insulin and fetal haemoglobin were significantly higher in infants from diabetic mothers compared with control infants, Liproxstatin-1 nmr as were haematocrit levels in venous blood samples taken from each infant at 4 h following delivery. Cord blood erythropoietin levels were similar in both groups. There was a positive strong correlation between maternal beta-OHB levels and polycythaemia in newborn infants, indicating that beta-OHB could activate erythropoiesis independently from intrauterine hyperinsulinaemia and/or

erythropoietin levels, and may be important in the pathogenesis of polycythaemia in infants born to diabetic mothers.”
“In an effort to utilize the cationic cobalt(III) complex as a binding agent for fluoroanions, the reaction of carbonatobis(1,10-phenanthroline)cobalt(III) chloride with sodium tetrafluoroborate and sodium hexafluorophosphate in water (1:1 M ratio) leads to the formation of [Co(phen)(2)CO3]BF4 (1) and [Co(phen)(2-)CO3]PF6 center dot 3H(2)O (2). These cobalt(III) complex salts have been characterized by elemental analyses, spectroscopic techniques (multinuclear NMR, UV/Visible and FT-IR), solubility product and conductance measurements. X-ray structure determination of these complex salts revealed the presence of ionic structures i.e., one complex cation [Co(phen)(2)CO3](+) and one BF4- anion in 1 and one complex cation [Co(phen)(2)CO3](+), one PF6- anion and three water molecules of crystallisation in 2.

Incubation with a soluble fragment of adiponectin type 1 receptor or inhibition of nitric oxide synthase blocked the vasodilator effect of healthy perivascular adipose tissue.\n\nConclusions-We

conclude that adipocytes secrete adiponectin and provide the first functional evidence that it is a physiological modulator of local vascular tone by increasing nitric oxide bioavailability. This capacity is lost in obesity by the development of adipocyte hypertrophy, leading to hypoxia, inflammation, and oxidative stress. (Circulation. 2009; 119: 1661-1670.)”
“Rubella is generally a mild childhood disease, but infection during early pregnancy may cause spontaneous abortion or congenital rubella syndrome (CRS), which may entail Vorinostat price a variety of birth defects. Since vaccination at levels

short of those necessary to achieve eradication may increase the average age of infection, and thus potentially the CRS burden, introduction of the vaccine has been limited to contexts where coverage is high. Recent work suggests that spatial heterogeneity in coverage should also be a focus of concern. Here, we use a detailed dataset from South Africa to explore the implications of heterogeneous vaccination for the burden of CRS, introducing realistic vaccination scenarios based on reported levels of measles vaccine coverage. Our results highlight the potential impact of country-wide reductions of incidence of rubella on the local CRS burdens in districts with small population sizes. However, simulations indicate that if rubella vaccination is introduced with coverage reflecting current estimates for measles coverage in South Africa, the burden SB203580 datasheet of CRS is likely to be reduced overall over a 30 year time horizon by selleck screening library a factor of 3, despite the fact that this coverage is lower than the traditional 80 per cent rule of thumb for vaccine introduction, probably owing to a combination of relatively low birth and transmission rates. We conclude by discussing the likely impact of private-sector vaccination.”
“Due to its

common dysregulation in epithelial-based cancers and extensive characterization of its role in tumor growth, epidermal growth factor receptor (EGFR) is a highly validated target for anticancer therapies. There has been particular interest in the development of monoclonal antibodies (mAbs) targeting EGFR, resulting in two approved mAb-based drugs and several others in clinical trials. It has recently been reported that treatment with combinations of noncompetitive mAbs can induce receptor clustering, leading to synergistic receptor down-regulation. We elucidate three key aspects of this phenomenon. First, we show that highly potent combinations consisting of two noncompetitive mAbs that target EGFR domain 3 reduce surface receptor levels by up to 80% with a halftime of 0.5-5 h in both normal and transformed human cell lines to an extent inversely proportional to receptor density.

In this study, we also assessed the cytotoxicity of leinamycin against a collection of mammalian cell lines defective in various repair pathways. The mammalian cell line defective in the nucleotide excision BMS-345541 repair

(NER) or base excision repair (BER) pathways was about 3 to 5 times more sensitive to leinamycin as compared to the parental cell line. In contrast, the radiosensitive mutant xrs-5 cell line deficient in V(D)J recombination showed similar sensitivity towards leinamycin compared to the parental cell line. Collectively, our findings suggest that both NER and BER pathways play an important role in the repair of DNA damage caused by leinamycin. (C) 2012 Elsevier Ltd. All rights reserved.”
“Ribonucleotide reductases (RRs) catalyze the rate-limiting step of de novo deoxynucleotide (dNTP) synthesis. Eukaryotic RRs consist of two proteins, RR1

(alpha) that contains the catalytic site and RR2 (beta) that houses a diferric-tyrosyl radical essential for ribonucleoside diphosphate reduction. Biochemical analysis has been combined with isothermal titration calorimetry (ITC), X-ray crystallography and yeast genetics to elucidate the roles of two loop 2 mutations R293A and Q288A in Saccharomyces cerevisiae RR1 (ScRR1). These mutations, R293A and Q288A, cause lethality and severe S phase defects, respectively, in cells that use ScRR1 as the sole source of RR1 activity. Compared to the wild-type enzyme activity, R293A and Q288A mutants show 4% and 15%, respectively, for ADP reduction, whereas they are 20% and www.selleckchem.com/products/lazertinib-yh25448-gns-1480.html 23%, respectively, for CDP reduction. ITC data

showed that R293A ScRR1 is unable to bind ADP and binds CDP with 2-fold lower affinity compared to wild-type ScRR1. With the Q288A ScRR1 mutant, there is a 6-fold loss of affinity for ADP binding and a 2-fold loss of affinity for CDP compared to the wild type. X-ray structures of R293A ScRR1 complexed with dGTP and AMPPNP CDP [AMPPNP, adenosine 5-(beta,gamma-imido)triphosphate tetralithium salt] reveal that ADP is not bound at the catalytic site, and CDP binds farther from the catalytic site compared to wild type. Our in vivo functional find more analyses demonstrated that R293A cannot support mitotic growth, whereas Q288A can, albeit with a severe S phase defect. Taken together, our structure, activity, ITC and in vivo data reveal that the arginine 293 and glutamine 288 residues of ScRR1 are crucial in facilitating ADP and CDP substrate selection. (C) 2012 Elsevier Ltd. All rights reserved.”
“Jatropha has potential to be an important bio-fuel crop due to such advantages as high seed oil content and the ability to grow well on marginal lands less suited for food crops. Despite its ability to grow on marginal land, Jatropha is still susceptible to high salt and drought stresses, which can significantly reduce plant growth, stomatal conductance, sap-flow rate, and plant sap volume.

Tp-e/QT ratio and Tp-e/QTc ratio are used as an index of ventricular arrhythmogenesis. An increased incidence of ventricular arrhythmias has been reported in patients with obstructive sleep apnea (OSA). The aim of this study was to assess ventricular repolarization in patients with OSA by using Tp-e interval, Tp-e/QT ratio, and Tp-e/QTc ratio. Methods: We have studied 72 patients who underwent overnight polysomnography (PSG) between the years 2010-2011 at our institution. Patients with moderate and severe OSA (23 patients; mean age: 45 +/- 10), find more according to the apnea-hypopnea index, constituted

the study group. Patients with normal PSG (23 patients; mean age: 42 +/- 11) were used as the control group. In all patients, Tp-e interval, Tp-e/QT ratio, Tp-e/QTc ratio, as well as some other electrocardiogram intervals were measured. Independent samples t-tests were used for comparison

of continuous and categorical variables and correlations were calculated by Spearman rank correlation. Results: Although QT and QTc intervals were not different between the groups, mean Tp-e interval (81.6 +/- 11.1 msn; 63.9 +/- 7.3 msn; this website respectively; P < 0.001), Tp-e/QT ratio (0.21 +/- 0.03; 0.17 +/- 0.02; respectively; P < 0.001), and Tp-e/QTc ratio (0.20 +/- 0.03; 0.16 +/- 0.02; respectively; P < 0.001) were prolonged in the study group compared to the control group. Correlation analysis showed a significant positive correlation between the presence of moderate and severe OSA and Tp-e interval (r = 0.72; P < 0.001), Tpe/QT ratio (r = 0.70; P < 0.001), and Tp-e/QTc ratio (r = 0.70; P < 0.001). Conclusions: Tp-e interval, Tp-e/QT ratio, and Tp-e/QTc ratio are prolonged in patients with moderate and severe OSA patients. There is a positive selleck chemicals llc correlation between the presence of OSA and Tp-e interval, Tp-e/QT ratio, and Tp-e/QTc ratio. (PACE 2012; 35:966-972)”
“Background: Although

attentional bias to alcohol-related stimuli has been identified as a potentially important factor in initiating a drinking episode, little is known about whether it persists once drinking has begun. Chief among the measures of attentional bias is the visual probe task, which requires the ability to respond quickly and fixate on objects. Alcohol is well recognized for impairing both of these abilities, which could undermine the reliable detection of attentional bias in intoxicated individuals. The purpose of the present study was to determine if attentional bias toward alcohol-related images can still be observed under alcohol even at blood alcohol concentrations (BACs) sufficient to disrupt reaction time (RT) and basic ocular functions.\n\nMethods: The present study employed a within-subject design to test the effects of three doses of alcohol (0.0 g/kg, 0.32 g/kg, and 0.

01), and increased cell death and cellular caspase activity (P<0.01). Western blotting data revealed that SB203580 sensitises cancer cells to 5-FU due to an increase in Bax expression. These findings suggest that p38 MARK is involved in cancer cell survival, and that the inhibition of p38 MAPK can enhance 5-FU to kill colorectal cancer cells.”
“Background: Mutations in PKHD1 cause autosomal recessive Caroli disease, which is a rare congenital disorder involving cystic dilatation of the intrahepatic bile ducts. However, the mutational spectrum

of PKHD1 and the Duvelisib research buy phenotype-genotype correlations have not yet been fully established.\n\nMethods: Whole exome sequencing (WES) was performed on one twin sample with Caroli disease from a Chinese family from Shandong province. Routine Sanger sequencing was used to validate the WES and to carry out segregation studies. We also described the PKHD1 mutation associated with the genotype-phenotype

of this twin.\n\nResults: A combination of WES and Sanger sequencing selleck revealed the genetic defect to be a novel compound heterozygous genotype in PKHD1, including the missense mutation c.2507 T>C, predicted to cause a valine to alanine substitution at codon 836 (c.2507T>C, p.Val836Ala), and the nonsense mutation c.2341C>T, which is predicted to result in an arginine to stop codon at codon 781 (c.2341C>T, p.Arg781*). This compound heterozygous genotype co-segregates with the Caroli disease-affected pedigree members, but is absent in 200 normal chromosomes.\n\nConclusions: Our findings indicate exome

sequencing can be useful in the diagnosis of Caroli disease patients and associate a compound heterozygous genotype in PKHD1 with Caroli disease, which further increases our understanding of the mutation spectrum of PKHD1 in association with Caroli disease.”
“The present Autophagy high throughput screening study aims to assess the antimutagenic potential of methanol extract and different fractions (hexane, ethyl acetate and butanol) of chickrassy (Chukrasia tabularis), belonging to family meliaceae by employing histidine point reversion assay. The antimutagenic effect was evaluated against mutagens, 4-Nitro-o-phenylenediamine and sodium azide and promutagen, 2-Aminofluorene of TA98 and TA100 strain of Salmonella typhimurium. The co-incubation and pre-incubation mode of treatments were used to evaluate the bioantimutagenic and desmutagenic effects, respectively. From the results obtained, it was clear that methanol extract and its fractions showed more desmutagenic effect than bioantimutagenic effect. The methanol extract was found to be most active in TA98 while ethyl acetate fraction showed good results in TA100 strain against both promutagen and direct acting mutagen. High performance liquid chromatography (HPLC) analysis of methanol extract was carried out for the identification of chemical constituents and the results revealed that catechin, quercetin and rutin have contributed to its antimutagenic activity.