DNA polymerase beta from Trypanosoma cruzi is involved in kinetoplast DNA replication and repair of oxidative lesions.

Specific DNA repair pathways from Trypanosoma cruzi are believed to protect genomic DNA and kinetoplast DNA (kDNA) from mutations. Particular pathways are supposed to operate in order to repair nucleotides oxidized by reactive oxygen species (ROS) during parasite infection, being 7,8-dihydro-8-oxoguanine (8oxoG) a frequent and highly mutagenic base alteration. If unrepaired, 8oxoG can lead to cytotoxic base transversions during DNA replication.

Selective breeding for 50 kHz ultrasonic vocalization emission produces alterations in the ontogeny and regulation of rough-and-tumble play.

Ultrasonic vocalizations (USVs) are emitted by rodents and can signal either negative or positive affective states in social and nonsocial contexts. Our recent work has utilized selective breeding based upon the emission of 50 kHz USVs in response to standard cross species hand play-namely experimenters 'tickling' rats. Previous work has shown that high-tickle responsive animals (i.

Superior mesenteric artery syndrome in a patient with Charcot Marie Tooth disease.

The extrinsic compression of the third part of the duodenum as it passes through the aorto-mesenteric angle is known as the superior mesenteric artery syndrome (SMAS). This syndrome is a rare mechanical cause of upper intestinal obstruction, with a reported incidence of between 0.2% and 0.

Mortality in people with depressive, anxiety and alcohol use disorders in Finland.

Background: Mental disorders are associated with increased mortality, but population-based surveys with reliable diagnostic procedures controlling for somatic health status are scarce.

Aims: To assess excess mortality associated with depressive, anxiety and alcohol use disorders and the principal causes of death.

Method: In a nationally representative sample of Finns aged 30-70 years, psychiatric disorders were diagnosed with the Composite International Diagnostic Interview.

Influence of genomic ancestry on the distribution of SLCO1B1, SLCO1B3 and ABCB1 gene polymorphisms among Brazilians.

The frequency distribution of SNPs and haplotypes in the ABCB1, SLCO1B1 and SLCO1B3 genes varies largely among continental populations. This variation can lead to biases in pharmacogenetic studies conducted in admixed populations such as those from Brazil and other Latin American countries. The aim of this study was to evaluate the influence of self-reported colour, geographical origin and genomic ancestry on distributions of the ABCB1, SLCO1B1 and SLCO1B3 polymorphisms and derived haplotypes in admixed Brazilian populations.

Characteristics of women who undergo second-trimester abortion in the setting of a fetal anomaly.

Background: Most women diagnosed with a fetal anomaly terminate the pregnancy. Little is known about utilization of two procedures: dilation and evacuation (D&E) and induction termination.

Study Design: This retrospective cohort study included all women seen at the University of California, San Francisco (UCSF) Prenatal Diagnosis Center (PDC) who underwent a second-trimester abortion for an anomalous pregnancy from 2005 to 2008.

Circadian aspects of hyperthermia in mice induced by Aconitum napellus.

Background: Aconitum napellus (Acn) is used topically to relieve pain, itching and inflammation, and internally to reduce febrile states, among others. Any circadian time-related consequences of Acn administration are unknown. The objective of this study was to explore the effects of two doses of Acn on body temperature (BT) of mice treated at six different times over 24 hours.

Estimating the degree of identity by descent in consanguineous couples.

In some clinical and research settings, it is often necessary to identify the true level of "identity by descent" (IBD) between two individuals. However, as the individuals become more distantly related, it is increasingly difficult to accurately calculate this value. Consequently, we have developed a computer program that uses genome-wide SNP genotype data from related individuals to estimate the size and extent of IBD in their genomes.

Total synthesis of aeruginazole A.

The first total synthesis of Aeruginazole A, prepared via a convergent strategy that involved both solid-phase peptide synthesis and solution phase chemistry and that enabled conservation of the stereochemistry of the intermediates, is reported.

[Prudent use of antimicrobial agents and proposals for improvement in veterinary medicine].

The alarms that have sounded in the last two decades of the 20(th) century in the feld of antimicrobial resistance in livestock farming have led to the development of various measures that have substantially improved the use of antimicrobial agents in veterinary medicine. These measures mainly involve the implementation of new pharmaceutical legislation and the hygiene package provisions. Even though awareness of the regulations is high, surveillance systems have been implemented and the promotion of appropriate use has begun to show results, it is necessary to maintain these measures while promoting alternatives to the use of antimicrobials.

The fallacy of racial pharmacogenomics.

Personalized pharmacogenomics aims to use individual genotypes to direct medical treatment. Unfortunately, the loci relevant for the pharmacokinetics and especially the pharmacodynamics of most drugs are still unknown. Moreover, we still do not understand the role that individual genotypes play in modulating the pathogenesis, the clinical course and the susceptibility to drugs of human diseases which, although appearing homogeneous on the surface, may vary from patient to patient.

The genomic ancestry of individuals from different geographical regions of Brazil is more uniform than expected.

Based on pre-DNA racial/color methodology, clinical and pharmacological trials have traditionally considered the different geographical regions of Brazil as being very heterogeneous. We wished to ascertain how such diversity of regional color categories correlated with ancestry. Using a panel of 40 validated ancestry-informative insertion-deletion DNA polymorphisms we estimated individually the European, African and Amerindian ancestry components of 934 self-categorized White, Brown or Black Brazilians from the four most populous regions of the Country.

Thyroid hemiagenesis: report of a case and review of the literature.

Objectives: Our objective was to report an incidental finding of thyroid hemiagenesis in a patient who presented with a left neck mass, present a review of literature, and to discuss management of this diagnosis.

Study Design: Case report and review of literature.

Methods: An internet-based literature search was performed via Pubmed with key words, "hemithyroid agenesis, thyroid hemiagenesis, absent thyroid gland".

Global pharmacogenomics: Impact of population diversity on the distribution of polymorphisms in the CYP2C cluster among Brazilians.

The impact of biogeographical ancestry, self-reported 'race/color' and geographical origin on the frequency distribution of 10 CYP2C functional polymorphisms (CYP2C8*2, *3, *4, CYP2C9*2, *3, *5, *11, CYP2C19*2, *3 and *17) and their haplotypes was assessed in a representative cohort of the Brazilian population (n=1034). TaqMan assays were used for allele discrimination at each CYP2C locus investigated. Individual proportions of European, African and Amerindian biogeographical ancestry were estimated using a panel of insertion-deletion polymorphisms.

Recovering mitochondrial DNA lineages of extinct Amerindian nations in extant homopatric Brazilian populations.

Background: Brazilian Amerindians have experienced a drastic population decrease in the past 500 years. Indeed, many native groups from eastern Brazil have vanished. However, their mitochondrial mtDNA haplotypes, still persist in Brazilians, at least 50 million of whom carry Amerindian mitochondrial lineages.

Coinfection with different Trypanosoma cruzi strains interferes with the host immune response to infection.

A century after the discovery of Trypanosoma cruzi in a child living in Lassance, Minas Gerais, Brazil in 1909, many uncertainties remain with respect to factors determining the pathogenesis of Chagas disease (CD). Herein, we simultaneously investigate the contribution of both host and parasite factors during acute phase of infection in BALB/c mice infected with the JG and/or CL Brener T. cruzi strains.

Differential tissue tropism of Trypanosoma cruzi strains: an in vitro study.

We have previously demonstrated selection favoring the JG strain of Trypanosoma cruzi in hearts of BALB/c mice that were chronically infected with an equal mixture of the monoclonal JG strain and a clone of the Colombian strain, Col1.7G2. To evaluate whether cell invasion efficiency drives this selection, we infected primary cultures of BALB/c cardiomyocytes using these same T.

VKORC1 polymorphisms in Brazilians: comparison with the Portuguese and Portuguese-speaking Africans and pharmacogenetic implications.

Aims: The heterogeneity of the Brazilian population renders the extrapolation of pharmacogenomic data derived from well-defined ethnic groups inappropriate. We investigated the influence of self-reported 'race/color', geographical origin and genetic ancestry on the distribution of four VKORC1 SNPs and haplotypes in Brazilians. Comparative data were obtained from two major ancestral roots of Brazilians: Portuguese and Africans from former Portuguese colonies.

Effects of diabetes and obesity on vascular reactivity, inflammatory cytokines, and growth factors.

We examined the influences of obesity and diabetes on endothelium-dependent and -independent vasodilation, inflammatory cytokines, and growth factors. We included 258 subjects, age 21-80 years in four groups matched for age and gender: 40 healthy nonobese (BMI <30 kg·m(-2)) nondiabetic subjects, 76 nonobese diabetic patients, 37 obese (BMI >30) nondiabetic subjects, and 105 obese (BMI >30) diabetic patients. The flow-mediated dilation (FMD, endothelium-dependent) and nitroglycerin-induced dilation (NID, endothelium-independent) in the brachial artery, the vascular reactivity at the forearm skin and serum growth factors and inflammatory cytokines were measured.

Worldwide diversity of the Y-chromosome tetra-local microsatellite DYS464.

Of all DNA markers on the human Y-chromosome, the tetra-local Y-linked microsatellite DYS464 is the most polymorphic. We genotyped DYS464 in 677 male samples collected worldwide, maintained in the HGDP-CEPH Human Genome Diversity Cell Line Panel. Fourteen different alleles were found, with allele lengths varying from 9 to 23 repeats.

Color, race, and genomic ancestry in Brazil: dialogues between anthropology and genetics.

In the contemporary world, "race" narratives are so multifaceted that at times, different views of the concept appear mutually incompatible. In recent decades biologists, especially geneticists, have repeatedly stated that the notion of race does not apply to the human species. On the other hand, social scientists claim that race is highly significant in cultural, historical, and socioeconomic terms because it molds everyday social relations and because it is a powerful motivator for social and political movements based on race differences.

The Chilean Rural Practitioner Programme: a multidimensional strategy to attract and retain doctors in rural areas.

Developing countries currently face internal and external migration of their health workforce and interventions are needed to attract and retain health professionals in rural areas. Evidence of multidimensional interventions, however, is scarce. This study explores a long-standing strategy to attract and retain doctors to rural areas in Chile: the Rural Practitioner Programme.

Efficient human paternity testing with a panel of 40 short insertion-deletion polymorphisms.

We developed a panel of 40 multiplexed short insertion-deletion (indel) polymorphic loci with widespread chromosomal locations and allele frequencies close to 0.50 in the European population. We genotyped these markers in 360 unrelated self-classified White Brazilians and 50 mother-child-probable father trios with proven paternity.

Expression of matrix metalloproteinases 2 and 9 in human gastric cancer and superficial gastritis.

Aim: To assess expression of matrix metalloproteinases 2 (MMP2) and MMP9 in gastric cancer, superficial gastritis and normal mucosa, and to measure metalloproteinase activity.

Methods: MMP2 and MMP9 mRNA expression was determined by quantitative real-time polymerase chain reaction. Normalization was carried out using three different factors.