The diagnostic accuracy of autoscoring from auto-CPAP using different cutoff points of RDI (a parts per thousand yen5 and 10) was evaluated by the receiver operating Dorsomorphin research buy characteristics (ROCs) curve. The study included 114 patients (24 women; mean age and BMI, 59 years old and 33 kg/m(2); RDI and apnea/hypopnea index (AHI)-auto median, 5 and 2, respectively). The average difference between the AHI-auto and the RDI was -3.5 +/- 3.9. The intraclass correlation coefficient (ICC) between the total number of central apneas, obstructive, and hypopneas between the PSG and the auto-CPAP were 0.69, 0.16, and 0.15, respectively.

An AHI-auto bigger than 2 (RDI a parts per thousand yenaEuro parts per thousand 5) or bigger than 4 (RDI a parts per thousand yenaEuro parts per thousand 10) had an area under the ROC curve, sensitivity, specificity, positive likelihood ratio, and negative for diagnosis of residual sleep apnea of 0.84/0.89, 84/81 Doramapimod datasheet %, 82/91 %, 4.5/9.5, and 0.22/0.2, respectively. The automatic analysis from auto-CPAP (S9 Autoset) showed a good diagnostic accuracy to identify residual sleep apnea. The absolute agreement between PSG and auto-CPAP to classify the respiratory events correctly varied from very low (obstructive apneas, hypopneas) to moderate (central apneas).”
“The use of natural remedies and pharmacological

mineral supplements for liver disease treatment has a long history. In present study, the levels of selenium (Se) and zinc (Zn) were determined in biological samples (serum and whole blood) of female hepatitis C patients (n = 132), age ranged 30-45 years, before and after 30 days treatment with herbal/pharmaceutical supplements. For comparative study, 128 age-matched female subjects, residing in the same residential areas and have socioeconomic status, were selected as referents. The Se and Zn in supplements, blood, and sera were determined

by atomic absorption spectrometry. It was observed that Zn and Se in blood and serum samples of viral DMH1 chemical structure hepatitis C (HCV) patients were reduced in the range of 28.6-39 % and 24-36 %, respectively, as compared to those of referents. After herbal/pharmaceutical supplementations, 20.6-25.0 and 9.15-13.2 % of Zn and 10.6-12.1 and 19.6-21.4 % of Se were enhanced in sera and blood samples of HCV patients, respectively. The resulted data indicated that the levels of Se and Zn in addition to some biochemical parameters were improved in HCV patients after herbal/pharmaceutical supplementation. The effects of both supplements were not significantly different (p > 0.05).”
“Cancer-related fatigue (CRF) has been documented as 1 of the most distressing symptoms reported by breast cancer survivors. CRF affects functioning and impacts quality of life. Possible causal factors include physical conditions, affective and cognitive states, proinflammatory cytokines, and metabolic factors.

(C) 2012 American Institute of Physics.

[doi:10.1063/1.3675279]“
“Chronic iliocaval venous obstructions have been treated by means of bypass surgery until endovascular treatment emerged as a valuable alternative. With the introduction of new imaging modalities, recanalization techniques and novel stent design the endovascular approach gained even more popularity and surpassed surgery GS-9973 as the primary treatment option. Still, lessons learned from our and others’ experience launches a new era in which we should decide on some unsolved issues. Foremost, reproducible imaging techniques should help to define treatment indication. Second, further research is needed to establish the optimal stent design, but also advice on stenting techniques. Finally, if and when arteriovenous fistulas should be used to support early patency is still unclear. This manuscript addresses some of these technical considerations, pitfalls and complications to advice on materials and methods to optimize the quality of your treatment.”
“Objective:The

GSI-IX ic50 M184V mutation in the HIV-1 reverse transcriptase gene is frequent ( bigger than 50%) in patients, both in resource-rich and resource-limited countries, conferring high-level resistance ( bigger than 100-fold) to the cytosine analog reverse transcriptase inhibitors lamivudine and emtricitabine. The reverse transcriptase enzyme of M184V HIV-1 mutants has reduced processivity, VX-661 resulting in reduced viral replication, particularly at low deoxynucleotide (dNTP) levels. We hypothesized that lowering intracellular

dNTPs with resveratrol, a dietary supplement, could interfere with replication of M184V HIV-1 mutants.Design and methods:Evaluation of the activity of resveratrol on infection of primary peripheral blood lymphocytes by wild-type and M184V mutant HIV-1. We assayed both molecular clones and primary isolates of HIV-1, containing M184V alone and in combination with other reverse transcriptase mutations. Viral infection was quantified by p24 ELISA and by quantitative real-time PCR analysis. Cell viability was measured by colorimetric 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assays.Results:In virus-infectivity assays, resveratrol did not inhibit replication of wild-type NL4-3 (resveratrol EC50 bigger than 10mol/l), but it inhibited NL4-3 184V mutant (resveratrol EC50=5.8mol/l). These results were confirmed by real-time PCR analysis of early and late products of reverse transcription. Resveratrol inhibited molecular clones and primary isolates carrying M184V, alone or in combination with other reverse transcriptase mutations (resveratrol EC50 values ranging from 2.5 to 7.7mol/l).Conclusions:Resveratrol inhibits HIV-1 strains carrying the M184V mutation in reverse transcriptase. We propose resveratrol as a potential adjuvant in HIV-1 therapy, particularly in resource-limited settings, to help control emtricitabine-resistant M184V HIV-1mutants.

“
“Vulcanization gives birth to the nonuniformity of rubber network, the identification of which MK-0518 molecular weight is the basis of improvement of performance of rubber products. We established a visco-hyperelastic

constitutive equation to reveal the quantitative distribution of the inhomogeneous network phases according to a three-phase model. The cross-linked network was assumed to be composed of the cross-linking cluster, the low network chain density domain and the fluid-like mass. The incorporation of clay with high specific surface area induced the effective uniformity of network structure by decreasing the content of the cross-linking cluster and increasing that of the low network chain density domain. These structural variations were responsible for excellent mechanical properties and strong strain-induced crystallization ability probed by the in situ synchrotron wide-angle X-ray diffraction. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40324.”
“Nitroepoxides are easily transformed into 1,4-diamino heterocycles such as quinoxalines and pyrazines by treatment

with 1,2-benzenediamines and ammonia, respectively. Additionally, related saturated heterocycles, such as piperazines and tetrahydroquinoxalines, can be accessed by treatment with 1,2-diamines and a reducing agent. These transformations are efficient, provide access privileged, bioactive structures, and produce minimal waste.”
“Background: EMR at the anorectal junction (ARJ) is technically challenging. Issues of safety and procedural efficacy dictate that surgery is still performed as the primary management for noninvasive lesions in most centers. Modifications www.selleckchem.com/products/fg-4592.html to the standard EMR technique may help to address the unique features and achieve safe and curative resection of most

lesions. Objective: To describe an effective and safe, modified EMR technique to remove advanced mucosal neoplasia (AMN) of the ARJ. Design: Prospective, observational cohort study. Setting: Academic, tertiary care referral center. Patients: Patients undergoing EMR for AMN at the ARJ over 4.5 years, from June 2008 to December 2012. Interventions: Use of long-acting local anesthetic in the submucosal injectate, endoscopic resection over the dentate line and hemorrhoidal columns, prophylactic antibiotics for resection of lesions at high risk for bacteremia, and cap and gastroscope-assisted resection. learn more Main Outcome Measurements: Procedural success and safety. Results: Twenty-six patients with lesions involving the ARJ were referred for EMR (males 53.8%, median age 63, median lesion size 40 mm). Two patients went directly to surgery because of an endoscopic diagnosis of adenocarcinoma. EMR was performed in 24 lesions with complete adenoma clearance achieved in 100%. Four patients were admitted to the hospital. Focal adenoma recurrence was seen in 4 of 18 patients (22%) at first surveillance colonoscopy and was managed by snare diathermy resection.

“
“A novel organocatalytic activation mode of cyclopropanes is presented. The reaction concept is based on a design in which a reactive donor-acceptor cyclopropane intermediate is generated by in situ condensation of cyclopropylacetaldehydes with an aminocatalyst. The mechanism of this enamine-based activation of cyclopropylacetaldehydes is investigated by the application of a combined computational and experimental

approach. The activation can be traced to a favorable orbital interaction between the pi-orbital of the enamine and the sigma*(C-C) orbital of the cyclopropyl ring. Furthermore, the synthetic potential of the developed system has been evaluated. By the application of a chiral secondary amine catalyst, the organocatalytically activated cyclopropanes show an unexpected and highly stereoselective formation of cyclobutanes, functionalizing at the usually inert sites of the GDC-0973 mouse donor-acceptor cyclopropane. By the application RepSox molecular weight of 3-olefinic oxindoles and benzofuranone, biologically relevant spirocyclobutaneoxindoles and spirocyclobutanebenzofuranone can be obtained in good yields, high diastereomeric ratios, and excellent enantiomeric excesses. The mechanism of the reaction is

discussed and two mechanistic proposals are presented.”
“In vitro embryo production (IVP) and cryopreservation are associated with a high incidence of pregnancy complications and fetal abnormalities that may be linked with alterations of placental development. The amniotic fluid is partly Ulixertinib derived from the transport of water and solutes across the placenta and provides the fetus with amino acids (AAs), which are the building blocks for biomolecules involved in physiological growth

and development. To better understand the anomalies associated with IVP pregnancies, the present study was conducted to test the hypothesis that amniotic concentrations of AAs differ in pregnancies derived from vitrified/thawed (V/T) IVP embryos compared with gestations obtained with natural mating (NM) in sheep. Amniotic fluid was sampled in ewes that were pregnant after transfer of V/T IVP embryos and that had conceived with NM between Days 60 and 65 (V/T, n = 6; NM, n = 11) and between Days 80 and 85 (V/T, n = 5; NM, n = 14) of gestation via ultrasound-guided amniocentesis. Concentrations of 16 AAs in the amniotic fluid were measured using high-performance liquid chromatography. From Days 60 to 65 of gestation, concentrations of cystine, phenylalanine, and isoleucine were lower in V/T compared with NM ewes. From Days 80 to 85 of pregnancy, the mean concentrations of cystine and lysine were lower in the V/T versus NM groups. The total AA concentration per ewe was similar between the groups from Days 60 to 65 and 80 to 85 of gestation and decreased by 55% from Days 60 to 65 and 80 to 85 of gestation in all ewes.

The interactive effects of cortisol and FA were examined by comparing telomere length (TL), biomarkers of DNA damage, and cytostasis. At day 12 TL was 5-17% longer in lymphocytes cultured in FA(low) conditions (mean +/- SD; 10.2% +/- 1.6), compared with those in FA(high) medium (9.1% +/- 1, p = 0.02). Refuting the hypothesis, TL was consistently greater in the

presence of cortisol. The effect of FA deficiency on the frequency of DNA damage was significant for nucleoplasmic bridges, circular nuclei, micronuclei and nuclear buds, (p smaller than 0.0001 – 0.001). The effect of cortisol, however, was negligible, only reaching statistical significance for the frequency of fused nuclei (p = 0.04). Cortisol was significantly associated with reduced cell division and growth and had an apparent protective effect this website on cell buy AC220 viability in the FA(low) conditions. Conclusions: Both chronic cortisol exposure, and folate deficiency, resulted in telomere elongation, however, the effect of cortisol was marginal relative to that of folate. Cortisol was not associated with increased chromosomal instability, but caused a significant reduction in cell division and growth. Together these results indicate that cortisol is not directly genotoxic and that the telomere shortening associated with increased psychological

stress in vivo may not be explained by a direct effect of cortisol.”
“We have previously demonstrated that running-wheel access normalizes the food intake and body weight of Otsuka Long-Evens Tokushima Fatty (OLETF) rats. Following 6 wk of running-wheel access beginning at 8 wk of age, the body weight of OLETF rats remains reduced, demonstrating a lasting effect on their phenotype. In contrast, access to a high-fat Vorinostat supplier diet exacerbates the hyperphagia and obesity of OLETF rats. To determine whether diet modulates the long-term effects of exercise, we examined the effects of high-fat diet on food intake and body weight in OLETF rats that had

prior access to running wheels for 4 wk. We found that 4 wk of running exercise significantly decreased food intake and body weight of OLETF rats. Consistent with prior results, 4 wk of exercise also produced long-lasting effects on food intake and body weight in OLETF rats fed a regular chow. When running wheels were relocked, OLETF rats stabilized at lower levels of body weight than sedentary OLETF rats. However, access to a high-fat diet offset these effects. When OLETF rats were switched to a high-fat diet following wheel relocking, they significantly increased food intake and body weight, so that they reached levels similar to those of sedentary OLETF rats fed a high-fat diet. Gene expression determination of hypothalamic neuropeptides revealed changes that appeared to be appropriate responses to the effects of diet and running exercise.

Eight STS primers that include two controls were selected to determine Y-chromosome microdeletions.\n\nResults:

20% (5/25) of all patients have at least one microdeletion in more than one region of AZF loci. Totally 17 microdeletions was observed, one case had deletions in three AZF regions, and 4 cases had deletions in two AZF regions. The rate of deletions was 42% (7/17) for AZFc, 35% (6/17) for AZFa and 23% (4/17) for AZFb.\n\nConclusion: The molecular DNA analysis could PND-1186 research buy help us to know the real cause of infertility and can give good information for good decision for example in men whit microdeletions who want to undertake ICSI procedure the deletions will be passed to their son.”
“Intramuscular injection of plasmid DNA (pDNA) to express a therapeutic protein is a promising method for the treatment of many diseases. However, the therapeutic applications are usually hindered by gene delivery efficiency buy Acalabrutinib and expression level. In this study, critical factors in a pDNA-based gene therapy system,

such as gene delivery materials, a therapeutic gene, and its regulatory elements, were optimized to establish an integrated system for the treatment of mouse hindlimb ischemia. The results showed that Pluronic (R) L64 ( L64) was an efficient and safe material for gene delivery into mouse skeletal muscle. It also showed intrinsic ability to promote in vivo angiogenesis in a concentration-dependent manner, which might be through the activation of nuclear factor kappa-light-chain-enhancer of activated B cell (NF-kappa B)-regulated angiogenic factors. Belnacasan cell line The combination of 0.1% L64 with a hybrid gene promoter (pSC) increased the gene expression level, elongated the gene expression duration, and enhanced the number of transfected muscle fibers. In mice ischemic limbs, a gene medicine (pSC-HIF1 alpha(tri)/L64) composed of L64 and pSC-based expression plasmid encoding hypoxia-inducible factor 1-alpha triple mutant (HIF-1 alpha(tri)), improved the expression of stable HIF-1 alpha, and in turn, the expression

of multiple angiogenic factors. As a result, the ischemic limbs showed accelerated function recovery, reduced foot necrosis, faster blood reperfusion, and higher capillary density. These results indicated that the pSC-HIF1 alpha(tri)/L64 combination presented a potential and convenient venue for the treatment of peripheral vascular diseases, especially critical limb ischemia.”
“The phylogenetic structure of Asclepiadoideae (Apocynaceae) has been elucidated at the tribal and subtribal levels in the last two decades. However, to date, the systematic positions of seven Asian genera, Cosmostigma, Graphistemma, Holostemma, Pentasachme, Raphistemma, Seshagiria and Treutlera, have not been investigated. In this study, we examine the evolutionary relationships among these seven small enigmatic Asian genera and clarify their positions in Asclepiadoideae, using a combination of plastid sequences of rbcL, rps16, trnL and trnL- F regions.

Dietary fat has been shown to increase postprandial endotoxemia. Therefore, the aim of this study was to assess the effects of different dietary oils on intestinal endotoxin transport and postprandial endotoxemia using swine as a model. We hypothesized that oils rich in saturated fatty acids (SFA) would augment, while oils rich in n-3 polyunsaturated

fatty acids (PUFA) would attenuate intestinal endotoxin transport and circulating concentrations.\n\nMethods: Postprandial endotoxemia was measured in Compound Library cell line twenty four pigs following a porridge meal made with either water (Control), fish oil (FO), vegetable oil (VO) or coconut oil (CO). Blood was collected at 0, 1, 2, 3 and 5 hours postprandial and measured for endotoxin. Furthermore, ex vivo ileum endotoxin transport was assessed

using modified Ussing chambers and intestines were treated with either no oil or 12.5% (v/v) VO, FO, cod liver oil (CLO), CO or olive oil (OO). Ex vivo mucosal to serosal endotoxin transport permeability (Papp) was then measured by the addition of fluorescent labeled-lipopolysaccharide.\n\nResults: Postprandial serum endotoxin concentrations were increased after a meal rich in saturated fatty acids and decreased with click here higher n-3 PUFA intake. Compared to the no oil control, fish oil and CLO which are rich in n-3 fatty acids reduced ex vivo endotoxin Papp by 50% (P < 0.05). Contrarily, saturated fatty acids increased the Papp by 60% (P = 0.008). Olive and vegetable oils did not alter intestinal endotoxin Papp.\n\nConclusion: Overall, these results indicate that saturated and n-3 PUFA differentially regulate intestinal epithelial endotoxin transport. This

may be associated with fatty selleck kinase inhibitor acid regulation of intestinal membrane lipid raft mediated permeability.”
“BACKGROUND & AIMS: Hepatic elastography (HE) is a noninvasive technique that measures liver stiffness and is used to diagnose hepatic fibrosis. It can help patients who are thought to have early-stage disease avoid a staging liver biopsy, but only when confounding variables that increase liver stiffness are excluded. Chronic inflammation from hepatitis C virus (HCV) infection is not considered to be one of these variables. METHODS: We identified 684 patients with HCV and METAVIR fibrosis scores of 0-2 from a prospective, multi-institutional study of liver stiffness in 2880 patients with chronic liver disease. Patients were 49.6 +/- 9.0 years old, 64.3% were male, and they had an average body mass index of 26.7 +/- 4.1 kg/m(2). RESULTS: In a multivariate analysis, inflammation (based on histologic analysis) and level of alanine aminotransferase (ALT) were associated with liver stiffness. The chances of a patient having a level of stiffness that indicates cirrhosis increased with grade of inflammation and level of ALT. By using a conservative 14.

These lesions

vary in regard to tumor grading Duvelisib chemical structure and clinical presentation, as compared with their intraparenchymal counterparts. A case report and review of the previous literature regarding IVO and tumor grading were conducted.\n\nCase Description: A case report of a patient with an anaplastic oligodendroglioma confined entirely within the ventricular system is presented. The patient underwent gross total surgical resection with perioperative shunt placement, yet developed aggressive recurrence of disease. The literature regarding the clinical presentation, methodology of diagnosis, and treatment of IVO was reviewed. Thirty-three studies reporting 70 patients with IVO were identified in the literature. Only 2 previous case reports of high-grade/anaplastic IVO were identified. Accurate diagnosis of these lesions, including immunohistochemistry, electron microscopy, and molecular/chromosomal subtyping, is imperative. Surgical resection with frequent perioperative shunting, as well as chemotherapy, www.selleckchem.com/products/BKM-120.html remains the mainstay of therapy. Adjuvant therapies may differ significantly according to the tumor grade and molecular Subtype.\n\nConclusions: Intraventricular oligodendroglioma remains an infrequently

encountered lesion, yet is usually found to be low grade at the time of surgery. Anaplastic IVO is an exceedingly rare lesion, with only 3 case reports in the literature. Future therapy for these aggressive lesions may Autophagy inhibitor clinical trial be based on susceptibility to various chemotherapeutic agents according to molecular subtyping. (C) 2009 Elsevier Inc.

All rights reserved.”
“The present study aimed to assess the effect of information about organic production on Pecorino cheese liking and consumer willingness to pay. Mean scores of perceived liking were similar for organic cheese (OC) and conventional cheese (CC). Expected liking scores were higher for OC than for CC (P<0.001). For OC the expected liking was significantly higher (P<0.001) than the perceived liking expressed in blind conditions (negative disconfirmation), whereas for CC the expected liking was significantly lower (P<0.001) than the perceived liking expressed in blind conditions (positive disconfirmation). Consumers assimilated their liking for OC in the direction of expectations, as the difference actual vs. perceived liking was significant (P<0.001). However the assimilation was not complete, as also the difference actual liking vs. expected liking was significant (P<0.001). Consumers showed a willingness to pay OC (mean +/- SE = 4.20+/-0.13(sic)/100 g) higher than the local retail price for conventional (1.90(sic)/100 g) and even organic cheese (3.00(sic)/100 g).

(J Allergy Clin Immunol 2010;125:209-16.)”
“In plant cells, boron (B) occurs predominantly as a borate ester associated with rhamnogalacturonan II (RG-II), but the function of this B-RG-II complex has yet to be investigated. 3-Deoxy-d-manno-2-octulosonic acid (KDO) is a specific component monosaccharide of RG-II. Mutant

plants defective in KDO biosynthesis are expected to have altered RG-II structure, and would be useful for studying the physiological function of the B-RG-II complex. Here, we characterized Arabidopsis CTP:KDO cytidylyltransferase (CMP-KDO synthetase; CKS), the enzyme activating KDO as a nucleotide sugar prior to its incorporation into RG-II. Our analyses localized the Arabidopsis CKS protein to mitochondria. The Arabidopsis CKS gene occurs as a single-copy gene in the genome, and we could not obtain cks null mutants selleck screening library from T-DNA insertion Stattic concentration lines. Analysis using +/cks heterozygotes in the quartet1 background demonstrated that the cks mutation rendered pollen infertile through

the inhibition of pollen tube elongation. These results suggest that KDO is an indispensable component of RG-II, and that the complete B-RG-II complex is essential for the cell wall integrity of rapidly growing tissues.”
“To describe the surgical outcomes and operative technique for reconstructing catheter-induced urethral erosion in men with a neurogenic bladder.\n\nThis Smoothened Agonist was a prospective study of 11 men (median age 45 years, range 26-52) who had elective urethroplasty for urethral erosion between 2004 and 2007 by one surgeon (C.M.G.). All men had a diagnosis of neurogenic bladder and indwelling catheter-induced urethral erosion. Reconstructive techniques included primary closure in

six men, substitution urethroplasty with a penile skin graft in three, penile skin flap in one and a buccal mucosa graft in one. A two-stage approach was used in one man.\n\nThe median (range) length of erosion from the meatus before surgery was 6 (4-10) cm. The repair was successful in seven men at a mean (range) follow-up of 25 (8-46) months. Of those with recurrence of erosion, the median length of the resultant defect was 2 (2-3) cm. All recurrences were in the first five patients of this series. The median time to recurrence of erosion was 1 month and recurrence did not appear to be related to any particular surgical technique. Urethral catheter traction after surgery appeared to be one of the factors related to repair breakdown.\n\nThe reconstruction of catheter-induced urethral erosion in men with a neurogenic bladder is feasible. Primary closure appears to be the best reconstructive method for urethral erosion, and avoiding catheter traction after surgery contributes to successful urethroplasty.”
“Modern density functionals were assessed for the calculation of magnetic exchange constants of academic hydrogen oligomer systems.

These results suggest the possible anti-inflammatory action of benzocyclo-heptoxazines via inhibition of LPS-activated macrophages.”
“Real-time, in situ electrochemical quartz crystal microbalance (EQCM) measurements are conducted to better understand the electrocrystallization of calcium phosphates (CaP) on CP-Ti. X-ray photoelectron spectroscopy is used to identify the exact phase deposited, so

that reliable estimation of the electrochemical processes involved is made. Analysis of the integrated intensity of the oxygen shake-up peaks, in combination with the determination of Ca/P and O/Ca atomic ratios, enables to determine unambiguously Vorinostat that the octacalcium phosphate (OCP) is formed. Its role as a precursor to hydroxyapatite (HAp) is discussed. After an incubation period, the process by which OCP is formed follows a Faradaic behavior. The incubation time may be related to the need for local increase of pH before precipitation from solution can occur. The standard enthalpy of activation is similar to 40 kJ/ mol, which excludes diffusion-controlled processes from being rate determining. The OCP deposit has thickness approximate to 0.61 mu m, apparent density Selleck GW786034 approximate to 0.95 g/cm(3), 63.6% porosity, and deposition rate of 23.5 ng/(cm(2) s) or 15 nm/min.

The low-equivalent weight value of 20.5 g/equiv, and the associated remarkably high number of electrons transferred in the reaction n approximate to 24, indicates that most of the current is consumed either by electrolysis of water or by a complex set of parasitic reactions. The low-solubility product allows precipitation of CaP even at relatively low concentrations of calcium and phosphate/hydrogen phosphate ions. It is shown that HAp most likely

forms via transformation of precursor phases, such as OCP, rather than directly. (c) 2008 Wiley Periodicals, Inc. J Biomed Mater Res 89A: 270-280, 2009″
“DNA repair activity is of interest as a potential biomarker of individual susceptibility CCI-779 mw to genotoxic agents. In view of the current trend for exploitation of large cohorts in molecular epidemiology projects, there is a pressing need for the development of phenotypic DNA repair assays that are high-throughput, very sensitive, inexpensive and reliable.\n\nTowards this goal we have developed and validated two phenotypic assays for the measurement of two DNA repair enzymes in cell extracts: (1) O-6-methylguanine-DNA-methyltransferase (MGMT), which repairs the O-6-alkylguanine-type of adducts induced in DNA by alkylating genotoxins; and (2) apurinic/apyrimidinic endonuclease 1 (APE 1), which participates in base excision repair (BER) by causing a rate-limiting DNA strand cleavage 5′ to the abasic sites.