Objective: To evaluate

Objective: To evaluate 4EGI-1 purchase the antioxidant, analgesic, antidiarrheal, anthelmintic activities, and general toxicity of the ethanol extract of the roots. Materials and Methods: The extract was assessed for free-radical-scavenging activity by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, total phenolic content (TPC) by the Folin Ciocalteu reagent, antioxidant activity by the ferric reducing power assay, analgesic activity by the acetic acid-induced writhing and hot-plate

tests, antidiarrheal activity by the castor oil-induced diarrhea model in mice, anthelmintic activity on Paramphistomum cervi and Haemonchus contortus, and general toxicity by the brine shrimp lethality assay. Results: The extract showed free-radical-scavenging activity with an IC 50 value of 44.86 g/mL. TPC was 537.89 mg gallic acid equivalent/100 g of dried plant material. It showed concentration-dependent reducing power, and displayed 42.11 and 69.32% writhing inhibition at doses of 250 and 500 mg/kg body weight, respectively. The extract also significantly raised the pain threshold at the above-mentioned

dose levels. In vivo antidiarrheal property was substantiated by Torin 2 significant prolongation of latent period and decrease in total number of stools compared with the control. The LC 50 against brine shrimp nauplii was 36.21 g/mL. The extract exhibited dose-dependent decrease in paralysis and death time of the helminths. Conclusion: The above results demonstrated that the plant possesses notable bioactivities and somewhat supports its use in folk medicine.”
“Bone marrow-derived cells represent a heterogeneous cell population containing haematopoietic stem and progenitor cells. These cells have been identified as potential candidates for use in cell therapy for the regeneration

of damaged tissues caused by trauma, degenerative diseases, ischaemia and inflammation or cancer treatment. see more In our study, we examined a model using whole-body irradiation and the transplantation of bone marrow (BM) or haematopoietic stem cells (HSCs) to study the repair of haematopoiesis, extramedullary haematopoiesis and the migration of green fluorescent protein (GFP(+)) transplanted cells into non-haematopoietic tissues. We investigated the repair of damage to the BM, peripheral blood, spleen and thymus and assessed the ability of this treatment to induce the entry of BM cells or GFP(+)lin(-)Sca-1(+) cells into non-haematopoietic tissues. The transplantation of BM cells or GFP(+)lin(-)Sca-1(+) cells from GFP transgenic mice successfully repopulated haematopoiesis and the haematopoietic niche in haematopoietic tissues, specifically the BM, spleen and thymus. The transplanted GFP(+) cells also entered the gastrointestinal tract (GIT) following whole-body irradiation.

The major cause for discontinuation was loss of response, in 18 c

The major cause for discontinuation was loss of response, in 18 cases. Combination treatment,

obesity and infusion reactions were found to be predictors of drug survival.”
“The aryl hydrocarbon receptor (AHR) is regarded as an important homeostatic transcriptional regulator within physiological and pathophysiological processes, including xenobiotic metabolism, endocrine function, immunity, and cancer. Agonist activation of the AHR is considered deleterious based on toxicological evidence selleck chemical obtained with environmental pollutants, which mediate toxic effects through AHR. However, a multitude of plant-derived constituents, e. g., polyphenols that exhibit beneficial properties, have also been described as ligands for the AHR. It is conceivable that some of the positive aspects of such compounds can be attributed to suppression of AHR activity through antagonism. Therefore, we conducted a dioxin response element reporter-based screen to assess the AHR activity associated with a range of flavonoid compounds. Our screen identified two flavonoids (5-methoxyflavone and 7,4′-dimethoxyisoflavone) Cell Cycle inhibitor with previously unidentified AHR agonist potential. In addition, we have identified

and characterized 6,2′,4′-trimethoxyflavone (TMF) as an AHR ligand that possesses the characteristics of an antagonist having the capacity to compete with agonists, such as 2,3,7,8-tetrachlorodibenzo-p-dioxin and benzo[a] pyrene, thus effectively inhibiting AHR-mediated transactivation of a heterologous reporter and endogenous targets, e. g., CYP1A1, independent of cell lineage or species. Furthermore, TMF displays superior action by virtue of having no partial agonist activity, in contrast to other documented antagonists, e. g., alpha-napthoflavone,

which are partial weak agonists. TMF also exhibits no species or promoter dependence with regard to AHR antagonism. TMF therefore represents an improved tool allowing for more precise dissection of AHR function in the absence of any conflicting Evofosfamide manufacturer agonist activity.”
“Trehalose uptake at 65 degrees C in Rhodothermus marinus was characterized. The profile of trehalose uptake as a function of concentration showed two distinct types of saturation kinetics, and the analysis of the data was complicated by the activity of a periplasmic trehalase. The kinetic parameters of this enzyme determined in whole cells were as follows: K-m = 156 +/- 11 mu M and V-max = 21.2 +/- 0.4 nmol/min/mg of total protein. Therefore, trehalose could be acted upon by this periplasmic activity, yielding glucose that subsequently entered the cell via the glucose uptake system, which was also characterized. To distinguish the several contributions in this intricate system, a mathematical model was developed that took into account the experimental kinetic parameters for trehalase, trehalose transport, glucose transport, competition data with trehalose, glucose, and palatinose, and measurements of glucose diffusion out of the periplasm.

SMARCA2 mutations caused NCBRS, typically with short stature, spa

SMARCA2 mutations caused NCBRS, typically with short stature, sparse hair, a thin vermillion of the Omipalisib solubility dmso upper lip, an everted lower lip and prominent finger joints. A SMARCE1 mutation caused CSS without typical facial coarseness and with significant digital/nail hypoplasia. ARID1A mutations caused the most severe CSS with severe physical complications. ARID1B mutations caused CSS without typical facial coarseness and with mild digital/nail hypoplasia, or caused syndromic ID. Because of the common underlying mechanism and overlapping clinical features, we propose that these conditions be referred to collectively as

“SWI/SNF-related ID syndromes”. (C) 2013 Wiley Periodicals, Inc.”
“Epithelial PRIMA-1MET inhibitor malignancies frequently metastasize to the serous cavities and result in symptomatic effusions. Cytology has high specificity but moderate sensitivity for the diagnosis of a malignant effusion. We developed and validated a simple, rapid, 3-color flow cytometric panel using the adhesion molecule Ber-EP4 to detect epithelial cells in effusions. One hundred ninety-five consecutive benign and malignant effusions received for routine cytologic examination were analyzed Eighty-three fluid specimens were benign and 76 were malignant as judged by follow-up

data. Ber-EP4 positive cells were detected with flow cytometry in 89.3% of malignant effusions. The sensitivity and specificity of flow cytometry was 88.15% and 97.64% compared with 73.68% and 100% on cytologic examination alone for the presence of a malignant effusion. Flow cytometry is a useful adjunct to cytology for the diagnosis of a malignant effusion and is particularly useful if the cytologic diagnosis is atypical/suspicious or if the cytologic preparations are hypocellular or hemorrhagic.”
“The Drosophila

disconnected (disco) gene encodes a C(2)H(2)-type zinc finger transcription factor required for the development of the central and peripheral nervous systems. We report that disco participates in a positive feedback loop with the Dll gene, a master regulator of ventral appendage development. Dll function is not only required for proper disco expression EPZ-6438 mouse in antenna and leg discs, but is also sufficient for ectopic expression of disco in the developing retina and wing imaginal discs. Conversely, disco gene function is required for the maintenance of Dll expression. We show that Dll phenotypes are partially rescued by the up-regulation of disco expression in the Dll domain. Reduction in disco gene function disrupts antenna and leg development, and the phenotypes closely resemble that produced by Dll alleles. These observations demonstrate that disco plays a fundamental role in the Dll-dependent patterning of antenna and leg, perhaps as a regulator of Dll gene expression.”
“The Mre11/Rad50/Nbs1 protein complex plays central enzymatic and signaling roles in the DNA-damage response.

The 2-year probability of conversion was 57 % for McDonald Criter

The 2-year probability of conversion was 57 % for McDonald Criteria and 36 % for

CDMS criteria. Variables at enrolment significantly associated with conversion according GNS-1480 to McDonald criteria were age and positivity for Barkhof criteria, and according to Poser’s CDMS criteria, age, positivity for Barkhof criteria and no disease modifying therapy. In this large prospective cohort study the conversion rate from CIS to MS in patients presenting with recent symptoms suggestive of MS was within the range of previous observational studies and lower than that reported in the placebo arm of randomized trials. We confirm the prognostic value of MRI in addition to the previous experimental data on the protective role

of disease-modifying therapies.”
“The template condensation reaction between Screening Library benzil and 3,4-diaminotoulene resulted mononuclear 12-membered tetraimine macrocyclic complexes of the type, [MLCl2] [M = Co(II), Ni(II), Cu(II) and Zn(II)]. The synthesized complexes have been characterized on the basis of the results of elemental analysis, molar conductance, magnetic susceptibility measurements and spectroscopic studies viz. FT-IR, H-1 and C-13 NMR, FAB mass, UV-vis and EPR. An octahedral geometry has been envisaged for all these complexes, while a distorted octahedral geometry has been noticed for Cu(II) complex. Low conductivity data of all these complexes suggest their non-ionic nature. The interactive studies of these complexes with calf thymus DNA showed that the complexes are avid binders of calf thymus DNA. The in vitro PRT062607 datasheet antibacterial studies of these complexes screened against pathogenic bacteria proved them as growth inhibiting agents. (C) 2012 Elsevier B.V. All rights reserved.”
“The aim of the study was to clarify and build upon current understandings of mental health nurse (MHN) identity. The study adopted a framework of social constructionism and qualitative methodology. Semistructured

interviews were conducted, which were thematically analyzed using Nvivo software. Twenty-five MHN were recruited across three geographical sites in the UK. Participants constructed a cluster of seven MHN identity characteristics that constituted a unique contribution to talk-based therapies. These themes of characteristics are: (i) the MHN as generic specialist; (ii) the MHN as adopting a service-user focus; (iii) the MHN as positioning and utilizing the personal self; (iv) the MHN as spending time with the service user; (v) the MHN as delivering talk-based therapies in versatile ways; (vi) the MHN as having an everyday attitude; and (vii) the MHN as having transferable skills. The distinctiveness, and thus, professional identity of mental health nursing, must be understood as a cluster of capabilities rather than a search for a singular point of difference.

Such agents have a relatively long-lasting effect (up to 7 min),

Such agents have a relatively long-lasting effect (up to 7 min), and can be administered as a single injection or, alternatively, a fractionated injection protocol can be used, depending on the quality of the window. Copyright (c) 2008 S. Karger AG, Basel.”
“Objective: Recent studies have shown that progressive renal dysfunction may develop in patients after endovascular aneurysm repair (EVAR). Data are conflicting about the effect of EVAR on renal function compared with open repair

(OR). The purpose of this study was to compare the effects of EVAR, both with transrenal fixation (TRF) and infrarenal fixation (IRF), vs OR on renal function detected with renal perfusion scintigraphy (RPS).\n\nMethods: A prospective study was carried out from January 2003 to December 2007. Exclusion criteria included factors that could influence selleck chemicals llc post-procedural renal function as: preoperative creatinine clearance level <65 mL/min for men and 60 mL/min for women, renal artery stenosis >60%, renal accessory artery planned to be covered by the endograft, single functioning click here kidney, hemodialysis, and kidney transplant. To evaluate renal function, an RPS was performed preoperatively, at 30 days, at 6 and 12 months, and then yearly. The glomerular filtration rate (GFR) was estimated with the Gates method.\n\nResults: During the study period, 403 patients were enrolled;

243 (60%) had OR and 160 (40%) EVAR; among these, 83 (51%) had a TRF and 77 (48%) an IRF; 55 patients were excluded from the study. No statistical differences were observed between groups for demographics and risk factors. Statistically significant differences emerged between OR and EVAR for early postoperative death (4% vs 0%; P = .01). Follow-up ranged from 54 to 126 months (mean, 76 months) for Roscovitine order OR and from 54 to 124 months (mean, 74 months) for EVAR (P = NS). Kaplan-Meier analysis survival rate at 9 years was 70% for OR and 58% for EVAR with a risk of secondary procedure of 9% and 34%, respectively (P < .0001). A deterioration of the GFR

was observed during the follow-up in both groups with a decrease after 9 years of 11% in the EVAR group and 3% in the OR group respective to baseline (P < .001). A remarkable difference emerged on renal function between EVAR patients who required a secondary procedure compared with the other EVAR patients (P < .005). No significant differences emerged between TFR and IRF for GFR decline during the follow-up period.\n\nConclusions: After EVAR, there is a continuous decline in renal function with respect to OR, regardless of fixation level and independently of pre-existing renal insufficiency. The risk of GFR impairment after EVAR should be taken into consideration in selecting patients with preoperative renal insufficiency.

Plasma FGFC1 and tissue extracts were measured using HPLC with UV

Plasma FGFC1 and tissue extracts were measured using HPLC with UV detection. FGFC1 was detected using a C-18 column with a gradient eluted mobile phase of acetonitrile-water (0.1%

trifluoroacetic acid), 1.0 mL/min. Chromatograms were monitored at 265 nm (column temperature: 40 degrees C). Pharmacokinetic data indicate that FGFC1 fitted well to a two-compartment selleck compound model. Elimination half-lives (t(1/2)) of FGFC1 were 21.51 +/- 2.17 and 23.22 +/- 2.11 min for 10 and 20 mg/kg, respectively. AUC(0-t) were 412.19 +/- 19.09, 899.09 +/- 35.86 mu g/mLmin, systemic clearance (CL) was 0.023 +/- 0.002, 0.022 +/- 0.002 ((mg/kg)/(mu g/mL)/min) and the mean residence time (MRT) was 10.15 +/- 10.97, 9.65 +/- 1.40 min at 10 and 20 mg/kg, respectively. No significant differences were observed in the systemic clearance and mean residence time at the tested doses, suggesting linear pharmacokinetics in rats. Tissue distribution data reveal that FGFC1 distributed rapidly in most tissues except the brain and that

the highest concentration of the drug was in the liver. In the small intestine, FGFC1 initially increased and then declined, but remained find more comparatively high 60 min after administration, suggesting that enterohepatic circulation may exist (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.”
“Despite the crucial aid that newly developed target therapies are providing to chemotherapy and stem cell transplant, the cure for many hematological malignancies is still an unmet need.

Although available therapies are able to induce an effective debulking of the tumor, most of the time, an insidious minimal residual disease survives current treatments and it is responsible for an immediate or delayed relapse. Peptide-derived antitumor vaccines have been developed with the idea that an artificially “educated” immune Crenigacestat system may exert an active specific antitumor response able to control and ultimately eradicate underlying post-treatment residual disease. This review will summarize current knowledge of peptide vaccines for hematological malignancies, trying to analyze promises and pitfalls of a safe and intelligent tool that after many years from its first appearance has not yet established its potential role as alternative immune mediated therapeutic approach for hematopoietic tumors.”
“To investigate the effect of a year of highly active antiretroviral therapy (HAART) on immune reconstruction and cytokine production in HIV/AIDS patients, 35 AIDS patients were recruited for HAART treatment and 35 healthy volunteers were assigned as controls.

SNARE binding results in narrower intrasynaptotagmin FRET distrib

SNARE binding results in narrower intrasynaptotagmin FRET distributions and less frequent transitions between states. We obtained an experimentally determined

model of the elusive Syt1-SNARE complex using a multibody docking approach with 34 FRET-derived distances as restraints. The Ca(2+)-binding loops point away from the SNARE complex, so they may interact with the same membrane. The loop arrangement is similar to that of the crystal structure of SNARE-induced Ca(2+)-bound Syt3, suggesting a common mechanism by which the interaction between synaptotagmins and SNAREs aids in Ca(2+)-triggered fusion.”
“In previous work we described six point mutations that thermostabilised the turkey beta(1)-adrenergic receptor (t beta(1)AR). The thermostable mutant, t beta(1)AR-m23, had an histone deacetylase activity apparent T(m) 21 degrees C

higher than the native protein when solubilized in dodecylmaltoside (DDM) and, in addition, was significantly more stable in short chain detergents, which allowed us crystallization and structure determination Identification of thermostabilizing mutations in t beta(1)AR was performed by systematic mutagenesis followed by expressing and assaying each of the 318 mutants for their thermostability. This is time-consuming, so to facilitate studies on related receptors, we have studied the transferability of these mutations to the human adrenergic receptors, h beta(1)AR and h beta(2)AR, which have, respectively, 76% and 59% sequence identity to t beta(2)AR, excluding the N- and C-termini. Thermostability, assays revealed that h beta(1)AR was much more unstable than t beta(2)AR, whereas selleck products h beta(2)AR was more stable than t beta(1)AR Addition of the 6 thermostabilizing mutations in t beta(2)AR-m23 into both h beta(2)AR and h

beta(2)AR increased their apparent T(m)s by 17 degrees C and 11 degrees C, respectively. In addition, the mutations affected the global conformation of the human receptors so that they S3I-201 inhibitor were predominantly in the antagonist bound form, as was originally observed for t beta(2)AR-m23. Thus, once thermostabilizing mutations have been identified in one G protein-coupled receptor, stabilization of close members within the subfamily is rapidly obtainable.”
“This study developed and validated a method for the extraction and determination of 11 phenolic acids in rat plasma, urine, and liver by ultraperformance liquid, chromatography-mass spectrometry (UPLC-MS). A system suitability test (instrumental linearity, area, and retention time precision) was performed and recovery, intraday and between-day precisions, detection limits (LOD), and quantification limits (LOQ) were determined for all compounds in each biological matrix. Recoveries varied between 88 and 117% in plasma, between 87 and 102% in urine, and between 38 and 100% in liver. Precision was higher than 13.7% intraday and 14.0% interday in all matrices, at three concentration levels.

Human arrival and subsequent habitat alterations (introduction of

Human arrival and subsequent habitat alterations (introduction of alien taxa, burning, etc.) are the most probable causes of its extinction. The same species or a close relative is documented from dunes on the island of Porto Santo, but the quality of preservation of its bones precludes more certain identification.”
“Patient safety is currently a critical focus within obstetrics. Standardization of intrapartum management, in particular with regard to fetal heart rate monitoring assessment and management, is an important effort to improve obstetrical adverse outcomes. This study explores various strategies to implement standardization of assessment and management. Such measures can

impact significantly perinatal outcomes and safety culture. Investigation

this website of the impact of standardizing intrapartum management remains an important area of further study.”
“Psychosocial need implies a desire or requirement for support that underlies Elafibranor chemical structure a person’s psychological, social and emotional wellbeing. This is not a new concept in the wider cancer literature, yet remains a relatively unexplored area in relation to haematological malignancies. The well-recognised differences between haematological and other types of cancer diagnosis warrant further investigation to try and highlight the potential differences in the needs of this patient group. A systematic review of key online databases and psycho-oncology journals was conducted to identify papers that formally assessed unmet psychosocial needs in adults with a diagnosis of haematological Selleckchem ACY-738 cancer. The breadth of methodologies of included studies made a meta-analytical approach unfeasible, therefore studies were analysed using a narrative synthesis approach. Eighteen studies were found to be relevant and a specific focus was placed on those papers that looked solely at participants

with a haematological diagnosis. The key areas of need identified were: psychological need, notably fear of recurrence; information needs; and needs relating to both family and healthcare professionals. Fear of recurrence was the most commonly identified psychosocial need within this literature. The clinical implications of these findings highlight the need for more widespread access to psychological support for haematology patients and for more to be done to tackle patients’ fears and concerns throughout the course of their illness. Assessment and identification of unmet needs is an important step enabling the development of clinical services that support and maintain psychological wellbeing through treatment and into survivorship.”
“Theory predicts that sperm competition will generate sexual conflict that favours increased ovum defences against polyspermy. A recent study on house mice has shown that ovum resistance to fertilization coevolves in response to increased sperm fertilizing capacity.

Handling and consumption of raw or undercooked poultry products h

Handling and consumption of raw or undercooked poultry products have been determined to be the main route of transmission. The ability

to use phages to target these bacteria has been studied for more than a decade and although we have made PF-00299804 nmr progress towards deciphering how best to use phages to control Campylobacter associated with poultry production, there is still much work to be done. This review outlines methods to improve the isolation of these elusive phages, as well as methods to identify desirable characteristics needed for a successful outcome. It also highlights the body of research undertaken so far and what criteria to consider when doing in-vivo studies, especially because some in-vitro studies have not been found

to translate into to phage efficacy in-vivo. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.”
“The tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) induces apoptosis specifically in cancer cells with little BMS-777607 Protein Tyrosine Kinase inhibitor effect on normal cells. We have previously shown that TRAIL signaling is altered in most ovarian cancer patients and that resistance to TRAIL contributes to ovarian cancer progression. In this study, we investigated whether resistance to TRAIL may be overcome by a monoclonal TRAILR2 (DR5) agonistic antibody (AD5-10). We found that the joint presence of AD5-10 with TRAIL and natural killer (NK) cells expressing TRAIL resensitizes ovarian cancer cells to apoptosis in vitro and in vivo, respectively. The combination of AD5-10 with carboplatin exerts a more than additive effect in vitro, which may at least partially be explained by the fact that carboplatin triggers DR5 expression on ovarian cancer cells. Moreover, AD5-10 restores the sensitivity

of platin-resistant Selleck Nepicastat ovarian cancer to carboplatin in vivo. In addition, we found that TRAIL expression and NK cells are abundant in the tumor microenvironment and that depletion of NK cells abolishes the antitumor activity of AD5-10. This indicates that NK-mediated immunosurveillance against ovarian cancer might be mediated by TRAIL and that apoptosis induced by AD5-10 requires the presence of NK cells. In conclusion, this study indicates a key role and strong antitumorigenic effect of DR5 and highlights a novel link between NK-mediated immunosurveillance and activation of DR5-mediated apoptosis in ovarian cancer. Mol Cancer Ther; 9(4); 1007-18. (C) 2010 AACR.”
“In the present study, we report the comparative proteome profiles of proteins solubilized from 37 breast cancer surgical tissues, normalized for the actin content. Blood-derived proteins were excluded from the analysis. Among the tumor-derived protein spots, a large proportion (39%) was found present in all patients.

Three well-supported clades in the LEAFY tree were corroborated b

Three well-supported clades in the LEAFY tree were corroborated by the SINE (short interspersed elements) or SINE-like insertions. Taxa from Peru are grouped roughly into two clades. Nolana galapagensis from the Galapagos Island is most likely to have derived from a Peruvian ancestor. The monophyly of the morphologically well-diagnosed Nolana acuminata group (N. acuminata, N. baccata, N. paradoxa, N. parviflora, N. pterocarpa, N. rupicola and N. elegans) was supported RepSox mouse by both plastid and LEAFY data. Incongruence between the plastid and the LEAFY data was detected concerning primarily the positions of N. sessiliflora, N. galapagensis,

taxa of the Alona group and the two Peruvian clades. Such incongruence may be due to reticulate evolution or in some cases lineage sorting of plastid DNA. Incongruence CCI-779 between our previous GBSSI trees and the plastid-LEAFY trees was also detected concerning two well-supported major clades in the GBSSI tree. Duplication of the GBSSI gene may have contributed to this incongruence. (C) 2008 Published by Elsevier Inc.”
“Introduction P6 outer membrane protein is one of the candidates for a vaccine formulation

against nontypeable Haemophilus influenzae (NTHi) infection. As otitis-prone children who have recurrent episodes of acute otitis media because of NTHi show an impaired immune response to P6, an innovative approach to vaccination is required to augment their immune response.\n\nResults We previously identified human HLA-DR9-restricted T cell epitope peptide and highly immunogenic analog peptides on P6 for peptide vaccine candidates. To develop a vaccine formulation effective in

the general population, we identified promiscuous T cell epitope peptides (p41-55, p71-85) Selleck SN-38 on P6. In addition to stimulating with potentially promiscuous peptides (p30-44, p45-59) selected using a computer algorithm, we established peptide-specific T cell lines which respond to P6.\n\nConclusion Our present results indicate that these peptides would be candidates for a widely applicable peptide vaccine formulation.”
“We have used a novel microwave-assisted method developed in our laboratories to synthesize a series of ruthenium-thiosemicarbazone complexes. The new thiosemicarbazone ligands are derived from benzo[d][1,3]dioxole-5-carbaldehyde (piperonal) and the complexes are formulated as [(diimine)(2) Ru(TSC)](PF(6))(2) (where the TSC is the bidentate thiosemicarbazone ligand). The diimine in the complexes is either 2,2′-bipyridine or 1,10-phenanthroline. The complexes have been characterized by spectroscopic means (NMR, IR and UV-Vis) as well as by elemental analysis. We have studied the biophysical characteristics of the complexes by investigating their anti-oxidant ability as well as their ability to disrupt the function of the human topoisomerase ll enzyme. The complexes are moderately strong binders of DNA with binding constants of 10(4) M(-1).