Detection of avian reovirus (ARV) by ELISA based on recombinant σB, σC and σNS full-length proteins and protein fragments.

Avian reovirus (ARV) is associated with arthritis/tenosynovitis and malabsorption syndrome in chickens. The σC and σB proteins, both exposed to the virus capsid, are highly immunogenic and could form the basis for diagnostic devices designed to assess the immunological status of the flock. Commercial ARV ELISAs cannot distinguish between vaccinated and infected animals and might not detect circulating ARV strains.

Protein fraction from Sesbania virgata (Cav.) Pers. seeds exhibit antioxidant and antifungal activities.

Sesbania virgata (Cav.) Pers. seeds are protein sources with health and environmental benefits.

Improving in vitro screening compounds anti-Trypanosoma cruzi by GFP-expressing parasites.

Background: Conventional microscopic counting is a widely utilised method for evaluating the trypanocidal effects of drugs on intracellular amastigotes. This is a low-cost approach, but it is time-consuming and reliant on the expertise of the microscopist. So, there is a pressing need for developing technologies to enhance the efficiency of low-cost anti-Trypanosoma cruzi drug screening.

Comparing Prognosis for , , and Non-BRCA Breast Cancer.

Background: Germline pathogenic variants (PV) in and genes, which account for 20% of familial breast cancer (BC) cases, are highly penetrant and are associated with Hereditary Breast/Ovarian Cancer Syndrome. Previous studies, mostly including higher numbers of BC patients, yielded conflicting results regarding BC outcomes. In the Portuguese population, BC is diagnosed more frequently than BC.

Is There a Role for Risk-Reducing Bilateral Breast Surgery in Ovarian Cancer Survivors? An Observational Study.

Background: Risk-reducing surgeries are an option for cancer risk management in individuals. However, while adnexectomy is commonly recommended in breast cancer (BC) survivors, risk-reducing bilateral breast surgery (RRBBS) is controversial in ovarian cancer (OC) survivors due to relapse rates and mortality.

Methods: We conducted a retrospective analysis of -OC survivors, with OC as first cancer diagnosis.

A New Strategy for Mapping Epitopes of LACK and PEPCK Proteins of Specific for Major Histocompatibility Complex Class I.

Leishmaniasis represents a complex of diseases with a broad clinical spectrum and epidemiological diversity, considered a major public health problem. Although there is treatment, there are still no vaccines for cutaneous leishmaniasis. Because spp.

Lateral versus posterior approaches to treat degenerative lumbar pathologies-systematic review and meta-analysis of recent literature.

Introduction: The lateral lumbar interbody fusion arose as a revolutionary approach to treating several spinal pathologies because the techniques were able to promote indirect decompression and lordosis restoration through a minimally invasive approach allowing for reduced blood loss and early recovery for patients. However, it is still not clear how the technique compares to other established approaches for treating spinal degenerative diseases, such as TLIF, PLIF, and PLF.

Material And Methods: This is a systematic review and meta-analysis of articles published in the last 10 years comparing lateral approaches to posterior techniques.

Overexpression of Gene Increases Infectivity in Mice Infected with .

Ecto-nucleoside triphosphate diphosphohydrolases (NTPDases) are enzymes located on the surface of the T. cruzi plasma membrane, which hydrolyze a wide range of tri-/-diphosphate nucleosides. In this work, we used previously developed genetically modified strains of Trypanosoma cruzi (T.

H2B.V demarcates divergent strand-switch regions, some tDNA loci, and genome compartments in Trypanosoma cruzi and affects parasite differentiation and host cell invasion.

Histone variants play a crucial role in chromatin structure organization and gene expression. Trypanosomatids have an unusual H2B variant (H2B.V) that is known to dimerize with the variant H2A.

Serum IgG anti-SARS-CoV-2 Binding Antibody Level Is Strongly Associated With IgA and Functional Antibody Levels in Adults Infected With SARS-CoV-2.

Background: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was first reported in December 2019 in Wuhan, China, and then rapidly spread causing an unprecedented pandemic. A robust serological assay is needed to evaluate vaccine candidates and better understand the epidemiology of coronavirus disease (COVID-19).

Methods: We used the full-length spike (S) protein of SARS-CoV-2 for the development of qualitative and quantitative IgG and IgA anti-S enzyme linked immunosorbent assays (ELISA).

Hereditary breast cancer and ancestry in the Madeira archipelago: an exploratory study.

Access to genetic testing and counselling in remote areas such as the Madeira archipelago, in the Northern Atlantic Ocean, may be complex. Different counselling methods, including telegenetics, should be explored. In this study, we characterise the Hereditary Breast/Ovarian Cancer (HBOC) families with Madeira ancestry enrolled in our programme.

Assessing the antigenicity of different VP3 regions of infectious bursal disease virus in chickens from South Brazil.

Background: Infectious bursal disease (IBD), also known as Gumboro disease, is a viral infection that causes mortality and immunosuppression in chickens (Gallus gallus). VP2 and VP3 are the major structural viral capsid components and are the most immunogenic proteins of IBD virus (IBDV). Reliable diagnostic tests using VP2 and VP3 produced in heterologous systems are important tools to control this infection.

A novel receptor for platelet-activating factor and lysophosphatidylcholine in Trypanosoma cruzi.

The lipid mediators, platelet-activating factor (PAF) and lysophosphatidylcholine (LPC), play relevant pathophysiological roles in Trypanosoma cruzi infection. Several species of LPC, including C18:1 LPC, which mimics the effects of PAF, are synthesized by T. cruzi.

SARS-CoV-2 re-infection versus prolonged shedding: A case series.

Since the start of the SARS-CoV-2 pandemic, it has been difficult to differentiate between SARS-CoV-2 re-infection and prolonged RNA shedding. In this report, we identified patients with positive RT-PCR results for SARS-CoV-2 ≥70 days apart. Clinical and laboratory data were collected and criteria were applied to discern whether the presentation was consistent with SARS-CoV-2 re-infection or prolonged viral RNA shedding.

DNA Topoisomerase 3α Is Involved in Homologous Recombination Repair and Replication Stress Response in .

DNA topoisomerases are enzymes that modulate DNA topology. Among them, topoisomerase 3α is engaged in genomic maintenance acting in DNA replication termination, sister chromatid separation, and dissolution of recombination intermediates. To evaluate the role of this enzyme in , the etiologic agent of Chagas disease, a topoisomerase 3α knockout parasite (TcTopo3α KO) was generated, and the parasite growth, as well as its response to several DNA damage agents, were evaluated.

Viral Load of Severe Acute Respiratory Syndrome Coronavirus 2 in Adults During the First and Second Wave of Coronavirus Disease 2019 Pandemic in Houston, Texas: The Potential of the Superspreader.

Background: During the coronavirus disease 2019 pandemic, a minority of index cases are associated with a majority of secondary cases suggesting that superspreaders could drive the pandemic. We identified a phenotype in individuals with extremely high viral load who could act as superspreaders.

Methods: Data were analyzed from individuals tested for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from 18 March through 15 August 2020.

An Evaluation of Portuguese Societal Opinion towards the Practice of Bullfighting.

Bullfighting is a controversial sport that continues to be legally permitted in a number of countries around the world, including Portugal. The spectacle has attracted significant attention from animal protectionist groups for many years because of concerns for animal distress, pain, and suffering during the fights. While there has been strong support for the sport in Portugal in the past, there is a need to study social profiles regarding the acceptability of this sport before a case can be made for changes in regional and national legislation.

High-Throughput Sequencing Identifies 3 Novel Susceptibility Genes for Hereditary Melanoma.

Cutaneous melanoma is one of the most aggressive human cancers due to its high invasiveness. Germline mutations in high-risk melanoma susceptibility genes have been associated with development hereditary melanoma; however, most genetic culprits remain elusive. To unravel novel susceptibility genes for hereditary melanoma, we performed whole exome sequencing (WES) on eight patients with multiple primary melanomas, high number of nevi, and negative for high and intermediate-risk germline mutations.

Knocking Down TcNTPDase-1 Gene Reduces Infectivity of .

Ecto-Nucleoside Triphosphate Diphosphohydrolases are enzymes that hydrolyze tri- and/or diphosphate nucleosides. Evidences pointed out to their participation in virulence, infectivity, and purine acquisition. In this study, recombinant knocking out or overexpressing the TcNTPDase-1 gene were built, and the role of TcNTPDase-1 in the interaction with VERO cells was investigated.

The Influence of Recombinational Processes to Induce Dormancy in .

The protozoan is the causative agent of Chagas disease, a neglected tropical disease that affects around 8 million people worldwide. Chagas disease can be divided into two stages: an acute stage with high parasitemia followed by a low parasitemia chronic stage. Recently, the importance of dormancy concerning drug resistance in amastigotes has been shown.

Nuclear export of replication protein A in the nonreplicative infective forms of Trypanosoma cruzi.

Replication protein A (RPA), a heterotrimeric complex, is the major single-stranded DNA binding protein in eukaryotes. Recently, we characterized RPA from Trypanosoma cruzi, showing that it is involved in DNA replication and DNA damage response in this organism. Better efficiency in differentiation from epimastigote to metacyclic trypomastigote forms was observed in TcRPA-2 subunit heterozygous knockout cells, suggesting that RPA is involved in this process.

Job hazards and respiratory symptoms in Hispanic female domestic cleaners.

The occupational hazards and respiratory symptoms of domestic cleaners in USA are largely unknown. We conducted a cross-sectional study among 56 Hispanic female domestic cleaner on their health status and frequency of cleaning products used and tasks performed. While women used multi-use products (60.

Ortholog of the polymerase theta helicase domain modulates DNA replication in Trypanosoma cruzi.

DNA polymerase theta (Polθ), a member of the DNA polymerase family A, exhibits a polymerase C-terminal domain, a central domain, and an N-terminal helicase domain. Polθ plays important roles in DNA repair via its polymerase domain, regulating genome integrity. In addition, in mammals, Polθ modulates origin firing timing and MCM helicase recruitment to chromatin.