Publications by authors named "Ana Luisa Teixeira"

About 2 to 3 % of all new cancer cases worldwide are renal carcinomas. Nevertheless, during the past few decades, there has been a 2 % annual increase in the prevalence of this malignancy worldwide. Within three years, 20 to 40 % of individuals with early-stage malignancies may either have a local recurrence or metastasis, and 20 to 30 % will receive a diagnosis of metastatic illness.

View Article and Find Full Text PDF

Non-alcoholic wine is becoming popular as a healthier alternative to traditional wine, offering potential health benefits without the risks of alcohol consumption. Sensory attributes, such as taste and aroma, significantly influence consumer preferences, with sweet, sour, and balanced fragrances favored over bitter or medicinal notes. A lower alcohol content can enhance the complexity of sensory properties, suggesting that non-alcoholic wines provide an appealing experience.

View Article and Find Full Text PDF

Clear cell renal cell carcinoma (ccRCC) is an aggressive kidney cancer subtype with limited biomarkers and therapeutic options. Thus, the present study aimed to evaluate the biomarker and therapeutic potential of Phosphatase and Tensin Homologue (PTEN)-regulating microRNAs (miRNAs) in 2D and 3D ccRCC models. Extracellular vesicles (EVs) from four renal cell lines were characterized, and selected miRNAs (hsa-miR-200c-3p, hsa-miR-25-3p, and hsa-miR-301a-3p) were quantified in cells and EVs.

View Article and Find Full Text PDF
Article Synopsis
  • * Abnormal miRNA levels are linked to various cancers, including prostate cancer (PC), where they can act as either tumor suppressors or oncogenes, complicating treatment strategies, especially for castration-resistant prostate cancer (CRPC).
  • * The review discusses the important role of miRNAs in cancer biology, examines delivery systems for miRNA therapies, and emphasizes the need for more research to effectively translate these therapies into clinical use for CRPC treatment.
View Article and Find Full Text PDF

Enzalutamide (ENZ) has emerged as a major treatment advance in castration-resistant prostate cancer (CRPC) patients; however the development of resistance remains a key challenge. The extracellular vesicles (VEs)-derived miRNAs play crucial roles tumor microenvironment cell communication, thereby influencing resistance mechanisms. Considering the urgent need for molecular biomarkers to monitor ENZ response and predict resistance, we intend to identify an EV-derived miRNA profile associated with ENZ resistance using an innovative 3D-spheroid in vitro model.

View Article and Find Full Text PDF

Cancer patients, prone to severe COVID-19, face immune challenges due to their disease and treatments. Identifying biomarkers, particularly extracellular vesicle (EV)-derived microRNAs (miRNAs), is vital for comprehending their response to COVID-19 vaccination. Therefore, this study aimed to investigate specific EV-miRNAs in the plasma of cancer patients under active treatment who received the COVID-19 booster vaccine.

View Article and Find Full Text PDF

Renal cell carcinoma is the most common adult renal solid tumor and the deadliest urological cancer, with clear cell renal cell carcinoma (ccRCC) being the predominant subtype. The PI3K/AKT signaling pathway assumes a central role in ccRCC tumorigenesis, wherein its abnormal activation confers a highly aggressive phenotype, leading to swift resistance against current therapies and distant metastasis. Thus, treatment resistance and disease progression remain a persistent clinical challenge in managing ccRCC effectively.

View Article and Find Full Text PDF

Prostate cancer (PC) is the second most frequently diagnosed cancer and the fifth leading cause of cancer-related deaths in male population worldwide. Since the growth and progression of PC highly depend on the androgen pathway, androgen deprivation therapy (ADT) is the mainstay of systemic treatment. Enzalutamide is a second-generation antiandrogen, which is widely used for the treatment of advanced and metastatic PC.

View Article and Find Full Text PDF

Nanomedicine's advent has promised to revolutionize different biomedical fields, including oncology. Silver Nanoparticles (AgNPs) showed promising results in different tumor models. Clear cell Renal Cell Carcinoma (ccRCC) is especially challenging due to its late diagnosis, poor prognosis and treatment resistance.

View Article and Find Full Text PDF

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) provoked a global pandemic identified as coronavirus disease (COVID-19), with millions of deaths worldwide. However, several important questions regarding its impact on public health remain unanswered, such as the impact of vaccination on vulnerable subpopulations such as cancer patients. Cytokine storm and a sustained inflammatory state are commonly associated with immune cell depletion, being manifested in most immunocompromised individuals.

View Article and Find Full Text PDF

A deeper understanding of the communication mechanisms of tumor cells in a tumor microenvironment can improve the development of new therapeutic solutions, leading to a more personalized approach. Recently, the field of extracellular vesicles (EVs) has drawn attention due to their key role in intercellular communication. EVs are nano-sized lipid bilayer vesicles that are secreted by all types of cells and can function as intermediators of intercellular communication with the ability to transfer different cargo (proteins, nucleic acids, sugar…) types among cells.

View Article and Find Full Text PDF

Chalcones are synthetic and naturally occurring compounds that have been widely investigated as anticancer agents. In this work, the effect of chalcones - against the metabolic viability of cervical (HeLa) and prostate (PC-3 and LNCaP) tumor cell lines was tested, to compare the activity against solid and liquid tumor cells. Their effect was also evaluated on the Jurkat cell line.

View Article and Find Full Text PDF

Objective: We aim to determine the disposal site for biohazardous materials resulting from diabetes surveillance and therapy.

Design: Cross-sectional study.

Setting: Five Portuguese primary care facilities.

View Article and Find Full Text PDF

Purpose: Silver nanoparticles (AgNPs) have shown great potential as anticancer agents, namely in therapies' resistant forms of cancer. The progression of prostate cancer (PCa) to resistant forms of the disease (castration-resistant PCa, CRPC) is associated with poor prognosis and life quality, with current limited therapeutic options. CRPC is characterized by a high glucose consumption, which poses as an opportunity to direct AgNPs to these cancer cells.

View Article and Find Full Text PDF

Coronavirus disease (COVID-19) is an infectious disease that is caused by a highly contagious and severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2). This infection started to spread across the world in 2019 and rapidly turned into a global pandemic, causing an urgent necessity for treatment strategies development. The mRNA vaccines against SARS-CoV-2 can trigger an immune response, providing genetic information that allows the production of spike glycoproteins.

View Article and Find Full Text PDF
Article Synopsis
  • Non-Hodgkin lymphoma (NHL) shows varying patient outcomes, highlighting the need for new biomarkers for prognosis.
  • This study explored novel circulating biomarkers based on an miRNA/lncRNA-associated ceRNA network, analyzing plasma levels of specific miRNA-lncRNA pairs in 113 NHL patients.
  • Findings revealed that certain miRNA-lncRNA pairs correlated with more aggressive disease and were independent prognostic factors, suggesting a potential for personalized disease management.
View Article and Find Full Text PDF

Colorectal cancer (CRC) is the third most common cancer in the world and represents the third most deadly tumor worldwide. About 15-25% of patients present metastasis in the moment of diagnosis, the liver being the most common site of metastization. Therefore, the development of new therapeutic agents is needed, to improve the patients' prognosis.

View Article and Find Full Text PDF
Article Synopsis
  • Researchers are aiming to find new biomarkers to better predict the prognosis of non-Hodgkin lymphoma (NHL) patients.
  • The study analyzed the roles of specific lncRNAs as miRNA sponges in ceRNA networks and determined that certain miRNA/lncRNA pairs are correlated with the aggressiveness of the disease.
  • Findings indicate that measuring the plasma levels of hsa-miR-150-5p/MALAT1 and hsa-miR-335-5p/NEAT1 can serve as independent prognostic factors, helping identify NHL patients who may need more aggressive treatment strategies.
View Article and Find Full Text PDF
Article Synopsis
  • Research shows that miRNAs and lncRNAs play important roles in lymphoma by acting as either tumor promoters or suppressors, making them potential therapeutic targets.
  • Despite their promise, challenges remain in developing effective delivery systems, minimizing off-target effects, and ensuring safety, which can be addressed through chemical modifications and targeted delivery methods.
  • Current studies are exploring the use of miRNA- and lncRNA-based therapies both as standalone treatments and in combination with existing therapies to enhance effectiveness and combat therapeutic resistance, with ongoing clinical trials examining these approaches in lymphoma.
View Article and Find Full Text PDF

Non-Hodgkin lymphoma (NHL) is a heterogeneous malignancy with variable patient outcomes. There is still a lack of understanding about the different players involved in lymphomagenesis, and the identification of new diagnostic and prognostic biomarkers is urgent. MicroRNAs and long non-coding RNAs emerged as master regulators of B-cell development, and their deregulation has been associated with the initiation and progression of lymphomagenesis.

View Article and Find Full Text PDF

Renal cell carcinoma (RCC) is the most lethal urological cancer and up to 40% of patients submitted to surgery will relapse. Thus, the study aim was to analyze the associations of SNPs with RCC patients' prognosis, and evaluate their effect on mRNA levels The rs4961280, rs3928672 and rs11996715 polymorphisms and the relative quantification of mRNA levels were analyzed by real-time PCR. We observed that genotypes carriers presented a higher cancer progression risk (odds ratio= 3.

View Article and Find Full Text PDF

Background: Gastric carcinogenesis progresses from normal mucosa, atrophic/metaplastic gastritis, and dysplasia to adenocarcinoma. MicroRNAs (miRNAs) regulate DNA expression and have been implicated; however, their role is not fully established.

Aims: The aim of this study was to characterize plasma and tissue expression of several miRNAs in gastric carcinogenesis stages.

View Article and Find Full Text PDF

The development and progression of colorectal cancer (CRC) have been associated with genetic and epigenetic alterations and more recently with changes in cell metabolism. Amino acid transporters are key players in tumor development, and it is described that tumor cells upregulate some AA transporters in order to support the increased amino acid (AA) intake to sustain the tumor additional needs for tumor growth and proliferation through the activation of several signaling pathways. LAT1 and ASCT2 are two AA transporters involved in the regulation of the mTOR pathway that has been reported as upregulated in CRC.

View Article and Find Full Text PDF