Publications by authors named "Ney Pereira Carneiro Santos"

Article Synopsis
  • * Most genetic studies on drug responses have focused on European and North American populations, leaving a gap in understanding how these drugs affect Indigenous groups, particularly in the Amazon.
  • * This study found unique genetic variants in Amazonian Indigenous populations related to corticosteroid treatment, emphasizing the need for precision medicine tailored to their genetic makeup to improve treatment outcomes and reduce adverse effects.
View Article and Find Full Text PDF

COVID-19 is a systemic disease caused by the etiologic agent SARS-CoV-2, first reported in Hubei Province in Wuhan, China, in late 2019. The SARS-CoV-2 virus has evolved over time with distinct transmissibility subvariants from ancestral lineages. The clinical manifestations of the disease vary according to their severity and can range from asymptomatic to severe.

View Article and Find Full Text PDF

Background: Female gynecological cancers represent a serious public health problem, with 1,398,601 new diagnoses and 671,875 deaths per year worldwide. Antipsychotics are often used in psychiatric disorders, including schizophrenia, bipolar disorder, and major depression. It is estimated that the prescription of these drugs is linked to 1,800 deaths a year in the United States, but their association with cancer remains controversial.

View Article and Find Full Text PDF
Article Synopsis
  • Radiotherapy can negatively impact healthy tissues, leading to toxicities potentially linked to genetic factors.
  • Radiogenomics aims to tailor radiotherapy treatments by examining genetic profiles, particularly in under-researched populations like indigenous Amazonians.
  • The study identified 39 genetic variants in the indigenous population, including some potentially protective against treatment side effects, highlighting the need for personalized radiotherapy approaches.
View Article and Find Full Text PDF

Background: Cyclin-dependent kinase 4/6 (CDK4/6) inhibitors are approved for advanced breast cancer combined with endocrine therapy (ET). The efficacy of CDK4/6 inhibitors plus ET in hormone estrogen-positive, human epidermal growth factor 2-negative (HR+/HER2-) early-stage breast cancer (esBC) is still to be confirmed.

Methods: We performed a systematic review and a meta-analysis to investigate the efficacy of CDK4/6i plus ET in esBC.

View Article and Find Full Text PDF

Background: Acute Lymphoblastic Leukemia (ALL) is a neoplasm of the hematopoietic system characterized by a clonal expansion of abnormal lymphocyte precursor cells. ALL is the most common form of cancer in children, but despite advances in treatment, it can still be fatal. Ethnic differences influence survival rates, and genomic ancestry plays an important role, especially in mixed-race populations such as Latin America.

View Article and Find Full Text PDF
Article Synopsis
  • * The research focused on the genomic profile of 64 Indigenous individuals, identifying high-impact genetic variants that suggest greater susceptibility to mercury exposure compared to global populations.
  • * As the first study of its kind, the findings aim to inform public policies by identifying at-risk populations through genomic analysis related to mercury metabolism.
View Article and Find Full Text PDF

Breast cancer (BCa) is the most common cancer and leading cause of cancer death among women globally. This can be explained by the genetic factor of this disease. This article aims to correlate the epidemiological data, worldwide incidence, and mortality of BCa with the Single-Nucleotide Polymorphisms (SNPs) associated with the susceptibility and severity in different populations.

View Article and Find Full Text PDF

Objective: Several studies point to antibacterial properties and beneficial effects of honey on scar tissue formation, which is a low-cost and easy-to-use option. This study aimed to compare honey versus a placebo for cicatrization and pain control of obstetric wounds, and determine if one is superior to the other, in terms of efficacy, through a meta-analysis.

Methods: We searched PubMed, Scopus, Cochrane Central Register of Controlled Trials, and Web of Science.

View Article and Find Full Text PDF

Papillary subtypes of renal-cell carcinoma (pRCC) represent 10-15% of the cases and commonly have MET alterations. This systematic review and single-arm meta-analysis evaluated MET inhibitor therapy (METi) efficacy and safety in adults with confirmed advanced pRCC. The search strategy included PubMed, Web-of-science, Cochrane, and Scopus.

View Article and Find Full Text PDF

Background: Paclitaxel and carboplatin is the standard chemotherapy for the treatment of advanced or recurrent endometrial cancer. However, the benefit of adding programmed cell death 1 (PD-1)/programmed death ligand 1 (PD-L1) inhibitors to chemotherapy is still unclear.

Method: We searched PubMed, Scopus, Cochrane, and Web of Science databases for randomized controlled trials that investigated PD-1/PD-L1 inhibitors plus carboplatin and paclitaxel compared with carboplatin and paclitaxel in primary advanced or recurrent endometrial cancer.

View Article and Find Full Text PDF
Article Synopsis
  • Acute lymphoblastic leukemia (ALL) is the most common cancer in children, and certain genetic variants (SNVs) may influence how patients respond to treatment and experience side effects.
  • The study focused on 25 specific SNVs in genes related to microRNA in 77 patients from the Brazilian Amazon, utilizing the TaqMan OpenArray™ Genotyping System for analysis.
  • Results indicated some SNVs increased the risk of neurological and gastrointestinal toxicities, while others provided protection, highlighting the potential to use these genetic markers to better understand and manage treatment-related toxicities in ALL patients.
View Article and Find Full Text PDF

Leprosy is a chronic neurodermatological disease caused by the bacillus . Recent studies show that SNPs in genes related to miRNAs have been associated with several diseases in different populations. This study aimed to evaluate the association of twenty-five SNPs in genes encoding miRNAs related to biological processes and immune response with susceptibility to leprosy and its polar forms paucibacillary and multibacillary in the Brazilian Amazon.

View Article and Find Full Text PDF

Prostate cancer (PCa) incidence and mortality vary across territories and populations. This can be explained by the genetic factor of this disease. This article aims to correlate the epidemiological data, worldwide incidence, and mortality of PCa with single-nucleotide polymorphisms (SNPs) associated with the susceptibility and severity of this neoplasm in different populations.

View Article and Find Full Text PDF

Genetic factors associated with COVID-19 disease outcomes are poorly understood. This study aimed to associate genetic variants in the , , , , , , and genes with the risk of severe forms of COVID-19 in Amazonian Native Americans, and to compare the frequencies with continental populations. The study population was composed of 64 Amerindians from the Amazon region of northern Brazil.

View Article and Find Full Text PDF

Genetic variations in have been associated with different pathologies in global literature, but there are no data regarding this gene in Native American populations. The Amazonian Native American populations have lower genetic diversity and are more different from other continental groups. We investigated 18 genetic variants in the gene in Amazonian indigenous and compared our results with the ones found in global populations, which were publicly available in the 1000 Genomes Project, gnmAD and ABraOM databases.

View Article and Find Full Text PDF
Article Synopsis
  • Tuberculosis (TB) is a serious infection caused by the bacterium Mycobacterium tuberculosis (Mtb), with significant health risks linked to genetic differences in individuals.
  • This study focused on examining 26 specific genetic variants (SNPs) to see if they influence the likelihood of developing TB in the Amazon population, involving 178 participants.
  • Findings revealed that certain SNPs are linked to both increased and decreased risks of TB, suggesting a genetic component to how individuals might respond to this infection and potentially aiding in future diagnostic advancements.
View Article and Find Full Text PDF
Article Synopsis
  • Fluoropyrimidines are commonly used cancer drugs but have significant toxicity, and this study examined genetic variations in patients treated with these drugs in the Brazilian Amazon.
  • The research involved 216 patients with gastrointestinal cancers, analyzing 33 gene polymorphisms and using advanced genotyping technology to assess ancestry and potential toxicity risks.
  • Four specific genetic polymorphisms (in the ABCC4, FPGS, SLC29A1, and MTHFR genes) were identified as significant predictors of toxicity, highlighting the importance of personalized medicine in this unique population.
View Article and Find Full Text PDF
Article Synopsis
  • - Identifying a specific microbiome pattern linked to gastric cancer (GC) is complex due to variations among populations, clinical scenarios, and different metagenomic methods, with H. pylori being the key microorganism involved in the early stages of cancer development.
  • - While H. pylori is central to gastric carcinogenesis, other non-H. pylori microbiome patterns emerge later in the process; however, most findings are inconsistent and suffer from issues like contamination, small sample sizes, and lack of standardized analysis.
  • - A comprehensive analysis of publicly available metagenomic data revealed that Helicobacter and Prevotella are prominent genera across various clinical scenarios, suggesting specific bacterial groups and their metabolic pathways could provide insights for future interventions
View Article and Find Full Text PDF
Article Synopsis
  • * This study analyzes 117 polymorphisms in 35 pharmacogenes among 109 Native American individuals from the Amazon and compares the results to data from the 1000 Genomes Project.
  • * Findings show significant genetic differences among the Native American groups, suggesting unique genetic profiles and similarities to populations in East Asia and South Asia, which may affect precision medicine approaches typically designed for European populations.
View Article and Find Full Text PDF
Article Synopsis
  • Acute Lymphoblastic Leukemia (ALL) is the most common cancer in children, and this study looks into genetic variations affecting the microRNAs related to its development in a Brazilian population.
  • The study analyzed 10 genetic polymorphisms in 100 pediatric ALL patients and 180 healthy controls, finding that specific genotypes significantly increased the risk of developing ALL, particularly the rs3746444 and rs3805500 polymorphisms.
  • Results indicate that certain genetic variations can indicate susceptibility to ALL, highlighting their potential use in risk assessment and facilitating a better understanding of the disease's complex causes.
View Article and Find Full Text PDF

The clinical condition COVID-19, caused by SARS-CoV-2, was declared a pandemic by the WHO in March 2020. Currently, there are more than 5 million cases worldwide, and the pandemic has increased exponentially in many countries, with different incidences and death rates among regions/ethnicities and, intriguingly, between sexes. In addition to the many factors that can influence these discrepancies, we suggest a biological aspect, the genetic variation at the viral S protein receptor in human cells, ACE2 (angiotensin I-converting enzyme 2), which may contribute to the worse clinical outcome in males and in some regions worldwide.

View Article and Find Full Text PDF

Colorectal (CRC) and gastric (GC) cancers are associated with increased morbidity and mortality. Single nucleotide polymorphisms (SNPs) of xenobiotic metabolism and transporter genes may play a role in the individual responses to exposure to substances implicated in susceptibility to cancer. The investigation of the genetic variation related to the activation and detoxification of xenobiotics may thus help to clarify the prevalence of neoplasms.

View Article and Find Full Text PDF

In recent years, the incidence of tuberculosis (TB) has declined worldwide, although this disease still occurs at relatively high rates in Amerindian populations. This suggests that the genetic ancestry of Amerindians may be an important factor in the development of infections, and may account for at least some of the variation in infection rates in the different populations. The present study investigated the potential influence of Amerindian genetic ancestry on susceptibility to tuberculosis in an Amazon population.

View Article and Find Full Text PDF
Article Synopsis
  • CNVs can help identify biomarkers and understand the causes of acute lymphoblastic leukemia (ALL) in children.
  • The study focused on analyzing specific CNVs that are frequently found in ALL and have potential roles in cancer development.
  • The findings indicate that microarrays are effective for detecting genomic changes, which could aid in assessing patient risk.
View Article and Find Full Text PDF