Publications by authors named "Rodrigo Dalmolin"

Coronavirus disease 2019 (COVID-19) presents a wide spectrum of symptoms, the causes of which remain poorly understood. This study explored the associations between autoantibodies (AABs), particularly those targeting G protein-coupled receptors (GPCRs) and renin‒angiotensin system (RAS) molecules, and the clinical manifestations of COVID-19. Using a cross-sectional analysis of 244 individuals, we applied multivariate analysis of variance, principal component analysis, and multinomial regression to examine the relationships between AAB levels and key symptoms.

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This study investigates the transcriptional profile of a novel oil-degrading microbial consortium (MC1) composed of four bacterial isolates from Brazilian oil reservoirs: Acinetobacter baumannii subsp. oleum ficedula, Bacillus velezensis, Enterobacter asburiae, and Klebsiella pneumoniae. Genomic analysis revealed an enrichment of genes associated with xenobiotic degradation, particularly for aminobenzoate, atrazine, and aromatic compounds, compared to reference genomes.

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Medulloblastoma (MB) is one of the most common pediatric brain tumors and it is estimated that one-third of patients will not achieve long-term survival. Conventional prognostic parameters have limited and unreliable correlations with MB outcome, presenting a major challenge for patients' clinical improvement. Acknowledging this issue, our aim was to build a gene signature and evaluate its potential as a new prognostic model for patients with the disease.

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Trastuzumab is a monoclonal antibody used in oncotherapy for HER2-positive tumors. However, as an adverse effect, trastuzumab elevates the risk of heart failure, implying the involvement of energy production and mitochondrial processes. Past studies with transcriptome analysis have offered insights on pathways related to trastuzumab safety and toxicity but limited study sizes hinder conclusive findings.

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Orthology information has been used for searching patterns in high-dimensional data, allowing transferring functional information between species. The key concept behind this strategy is that orthologous genes share ancestry to some extent. While reconstructing the history of a single gene is feasible with the existing computational resources, the reconstruction of entire biological systems remains challenging.

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The past few years have seen significant advances in the study of complex microbial communities associated with the evolution of sequencing technologies and increasing adoption of whole genome shotgun sequencing methods over the once more traditional Amplicon-based methods. Although these advances have broadened the horizon of meta-omic analyses in planetary health, human health, and ecology from simple sample composition studies to comprehensive taxonomic and metabolic profiles, there are still significant challenges in processing these data. First, there is a widespread lack of standardization in data processing, including software choices and the ease of installing and running attendant software.

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Background: Metastatic castration-resistant prostate cancer (mCRPC) is an aggressive form of cancer unresponsive to androgen deprivation therapy (ADT) that spreads quickly to other organs. Despite reduced androgen levels after ADT, mCRPC development and lethality continues to be conducted by the androgen receptor (AR) axis. The maintenance of AR signaling in mCRPC is a result of AR alterations, androgen intratumoral production, and the action of regulatory elements, such as noncoding RNAs (ncRNAs).

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Age is a significant risk factor for the coronavirus disease 2019 (COVID-19) severity due to immunosenescence and certain age-dependent medical conditions (e.g., obesity, cardiovascular disorder, and chronic respiratory disease).

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The emergence of open ocean global-scale studies provided important information about the genomics of oceanic microbial communities. Metagenomic analyses shed light on the structure of marine habitats, unraveling the biodiversity of different water masses. Many biological and environmental factors can contribute to marine organism composition, such as depth.

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Metagenomic studies unravel details about the taxonomic composition and the functions performed by microbial communities. As a complete metagenomic analysis requires different tools for different purposes, the selection and setup of these tools remain challenging. Furthermore, the chosen toolset will affect the accuracy, the formatting, and the functional identifiers reported in the results, impacting the results interpretation and the biological answer obtained.

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Motivation: Dendrogram is a classical diagram for visualizing binary trees. Although efficient to represent hierarchical relations, it provides limited space for displaying information on the leaf elements, especially for large trees.

Results: Here, we present TreeAndLeaf, an R/Bioconductor package that implements a hybrid layout strategy to represent tree diagrams with focus on the leaves.

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Sepsis remains a leading cause of death in ICUs all over the world, with pediatric sepsis accounting for a high percentage of mortality in pediatric ICUs. Its complexity makes it difficult to establish a consensus on genetic biomarkers and therapeutic targets. A promising strategy is to investigate the regulatory mechanisms involved in sepsis progression, but there are few studies regarding gene regulation in sepsis.

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Essential genes are so-called because they are crucial for organism perpetuation. Those genes are usually related to essential functions to cellular metabolism or multicellular homeostasis. Deleterious alterations on essential genes produce a spectrum of phenotypes in multicellular organisms.

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Article Synopsis
  • Scientists studied how nervous systems started and found that it’s mostly about how brain signals travel through tiny gaps called synapses.
  • They noticed that some important genes are similar in different creatures that don’t have nervous systems, which made them curious about how these connections developed.
  • By looking at many different species, they discovered that a common ancestor of humans and jellyfish had a lot of new genes important for brain signaling, leading to more complex nervous systems in animals like fish, birds, and mammals.
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The antioxidant and anti-inflammatory properties of Malpighia emarginata D.C (acerola) and Camellia sinensis L. (green tea) have been studied, particularly as an alternative in medicinal approach for different physio pathological conditions.

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Article Synopsis
  • * The arrangement of TF binding sites in the genome gives rise to varied transcriptional regulatory networks (TRNs), allowing different configurations from the same regulator.
  • * This article aims to provide insights for formulating hypotheses on the evolution of regulons by examining changes in TRN elements over time, as part of a special issue on transcriptional profiles and regulatory networks.
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Reactive oxygen species (ROS) are byproducts of aerobic metabolism and may cause oxidative damage to biomolecules. Plants have a complex redox system, involving enzymatic and non-enzymatic compounds. The evolutionary origin of enzymatic antioxidant defense in plants is yet unclear.

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  • Lead poisoning significantly damages the nervous system, especially during development, and disrupts cellular metabolism through its interference with crucial metalloproteins involved in ion balance and gene regulation.
  • A study using RNA-seq on human embryonic-derived neural progenitor cells treated with lead acetate revealed a downregulation of key cellular systems related to differentiation, such as cytoskeleton organization and biosynthesis processes.
  • The findings suggest that prolonged lead exposure leads to widespread impairment in gene expression regulation, potentially affecting the ability of neural progenitor cells to differentiate and impacting their overall development.
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Motivation: Several freely available tools perform analysis using algorithms developed to identify significant variation of gene expression individually. The transcriptogramer R package uses protein-protein interaction to perform differential expression of functionally associated genes. The software assesses expression profile of entire genetic systems and reveals which biological systems are significantly altered in case-control designed transcriptome experiments.

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Vitamin D (VD) deficiency is a growing problem, affecting a significant portion of the population in many countries. VD deficiency may be related to several diseases, including Alzheimer's disease (AD). This study aimed to review the relationship between VD deficiency and AD.

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  • Lead is a harmful heavy metal that can cause serious health problems when people are exposed to it.
  • Symptoms of lead poisoning can affect different parts of the body, including the heart, immune system, bones, and brain.
  • Researchers aimed to find out how lead affects the body by studying proteins that interact with lead and discovered 23 proteins related to important body functions.
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In tropical America, principally in Northeastern Brazil, the leaf extract of is traditionally used for treatment of different diseases. However, chemical and biological properties and activities of are poorly investigated and known. Here, we evaluated the antioxidant and anti-inflammatory activities of leaf extract from Our results show that leaf extract exhibits antioxidant activity when used to treat RAW 264.

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The non-syndromic cleft lip and/or palate (NSCL/P) is a common birth defect caused by a combination of genetic and environmental factors. The possible role of genome instability on NSCL/P patient needs more investigation, since DNA metabolism is an essential cellular function to keep cells with normal genotypes and gene expression patterns according to tissue specificities, which is critical during embryo development because it requires sensitive regulation of cell proliferation, apoptosis and differentiation. Thus, genome stability is ultimately essential to maintain a healthy life.

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In South America, particularly in the Northeastern regions of Brazil, Turnera subulata leaf extract is used as an alternative traditional medicine approach for several types of chronic diseases, such as diabetes, hypertension, chronic pain, and general inflammation. Despite its widespread use, little is known about the medicinal properties of the plants of this genus. In this study, we evaluate the antioxidant and anti-inflammatory of T.

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Background: Long non-coding RNAs (lncRNAs) are pervasively transcribed in the genome. They have important regulatory functions in chromatin remodeling and gene expression. Dysregulated lncRNAs have been studied in cancers, but their role in esophageal squamous cell carcinoma (ESCC) remains largely unknown.

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