292 results match your criteria: "University of Porto ICBAS-UP[Affiliation]"

Patient-Reported Outcomes in Sarcoma: A scoping review.

Eur J Oncol Nurs

February 2021

Escola Superior de Enfermagem do Porto (Nursing School of Porto), Porto, Portugal; CINTESIS- Center for Health Technology and Services Research (NursID: Innovation and Development in Nursing), Porto, Portugal. Electronic address:

Purpose: Sarcoma is a heterogeneous group of tumours, usually affecting young patients and related to both endogenous and exogenous risk factors. The importance of obtaining the patient's perspective of the illness experience is imperative. Patient-reported outcomes (PROs) are the outcomes that come directly from the patient.

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Bioinformatic analysis of dysregulated proteins in prostate cancer patients reveals putative urinary biomarkers and key biological pathways.

Med Oncol

January 2021

Laboratory of Signal Transduction, Department of Medical Sciences, Institute of Biomedicine - iBiMED, University of Aveiro, 3810-193, Aveiro, Portugal.

Prostate cancer (PCa) is one of the most common cancer types among men. The quantification of prostate-specific antigen used for PCa detection has revealed limited applicability. Thus, it is crucial to identify new minimally invasive biomarkers for PCa.

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Less toxic treatment strategies for testicular germ cell tumor (TGCT) patients are needed, as overtreatment is a concern due to the long-term side effects of platin-based chemotherapy. Although clinical benefit from classical hypomethylating agents has to date been limited, TGCTs show an abnormal DNA methylome indicating the potential of treating TGCTs with hypomethylating drugs. We tested, for the first time in TGCT cell lines, a new synthetic flavonoid compound (MLo1302) from the 3-nitroflavanone family of DNA methyltransferase (DNMT) inhibitors.

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The Response of Estuarine Ammonia-Oxidizing Communities to Constant and Fluctuating Salinity Regimes.

Front Microbiol

November 2020

Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR), Universidade do Porto, Terminal de Cruzeiros do Porto de Leixões, Matosinhos, Portugal.

Aerobic nitrification is a fundamental nitrogen biogeochemical process that links the oxidation of ammonia to the removal of fixed nitrogen in eutrophicated water bodies. However, in estuarine environments there is an enormous variability of water physicochemical parameters that can affect the ammonia oxidation biological process. For instance, it is known that salinity can affect nitrification performance, yet there is still a lack of information on the ammonia-oxidizing communities behavior facing daily salinity fluctuations.

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Esophageal squamous cell carcinoma (ESCC), the most frequent esophageal cancer (EC) subtype, entails dismal prognosis. Hypoxia, a common feature of advanced ESCC, is involved in resistance to radiotherapy (RT). RT response in hypoxia might be modulated through epigenetic mechanisms, constituting novel targets to improve patient outcome.

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Utility of Serum miR-371a-3p in Predicting Relapse on Surveillance in Patients with Clinical Stage I Testicular Germ Cell Cancer.

Eur Urol Oncol

June 2021

Departments of Surgery (Urology), Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada; University of Toronto, Toronto, Ontario, Canada. Electronic address:

Background: Optimal management of clinical stage I (CSI) testicular cancer is controversial due to lack of robust prognostic factors; miRNA-371a-3p holds promise as a biomarker, although its clinical utility for identifying patients at risk of relapse is unknown.

Objective: To explore the association between serum miR-371a-3p and CSI surveillance relapse.

Design, Setting, And Participants: Serial banked sera from 151 CSI (101 seminomas and 50 nonseminomatous germ cell tumors [NSGCTs]) samples from our Princess Margaret active surveillance cohort were tested.

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Clinical Significance of ARID1A and ANXA1 in HER-2 Positive Breast Cancer.

J Clin Med

December 2020

Cancer Biology & Epigenetics Group-Research Center, Portuguese Oncology Institute of Porto (CI-IPOP), Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal.

Background: trastuzumab is considered the standard of care for human epidermal growth factor receptor-2 (HER-2+) breast cancer patients. Regardless of the benefits of its use, many early-stage patients eventually recur, and usually, the disease progresses within a year. Since about half of the HER-2+ patients do not respond to trastuzumab, new biomarkers of prognosis and prediction are warranted to allow a better patient stratification.

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Somatic mutations in the () promoter regions are frequent events in urothelial cancer (UC) and their detection in urine (supernatant cell-free DNA or DNA from exfoliated cells) could serve as putative non-invasive biomarkers for UC detection and monitoring. However, detecting these tumor-borne mutations in urine requires highly sensitive methods, capable of measuring low-level mutations. In this study, we developed sensitive droplet digital PCR (ddPCR) assays for detecting promoter mutations (C228T, C228A, CC242-243TT, and C250T).

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The importance of catecholamines in post-traumatic stress disorder (PTSD) still needs to be explored. We aimed to evaluate epinephrine's (EPI) causal role and molecular mechanism for the persistence of PTSD traumatic memories. Wild-type (WT) and EPI-deficient mice (phenylethanolamine--methyltransferase-knockout mice, Pnmt-KO) were induced with PTSD and behavioral tests were performed.

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Access and Retention of Informal Dementia Caregivers in Psychosocial Interventions: A Cross-Sectional Study.

Arch Gerontol Geriatr

February 2021

Institute of Biomedical Sciences Abel Salazar, University of Porto (ICBAS-UP), Department of Behavioral Sciences, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; Center for Health Technology and Services Research (CINTESIS), Rua Dr. Plácido da Costa, 4200-450, Porto, Portugal. Electronic address:

Underutilization of community care services has been described for informal dementia caregivers. Most research has however examined caregivers' access to home or respite care rather than to services for themselves. The aims of this study are: to describe access and retention of informal dementia caregivers in psychosocial interventions; examine the perceived effects of interventions among users and motives for non-use among non-users; and compare caregivers with and without lifetime access and retention in psychosocial interventions across predisposing, enabling and need variables.

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Participant attitudes are an explanatory factor for attrition in online health-related interventions. However, its assessment prior to interventions start is uncommon, partly because proper measures are missing. This study presents the psychometric properties of a new scale measuring attitudes towards online psychoeducational interventions (OPIs).

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Novel treatment options are needed for testicular germ cell tumor (TGCT) patients, particularly important for those showing or developing cisplatin resistance, the major cause of cancer-related deaths. As TGCTs pathobiology is highly related to epigenetic (de)regulation, epidrugs are potentially effective therapies. Hence, we sought to explore, for the first time, the effect of the two most recently FDA-approved HDAC inhibitors (HDACis), belinostat and panobinostat, in (T)GCT cell lines including those resistant to cisplatin.

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MicroRNAs have emerged as new diagnostic and therapeutic biomarkers for breast cancer. Herein, we analysed miR-99a-5p expression levels in primary tumours and plasma of breast cancer patients to evaluate its usefulness as a minimally invasive diagnostic biomarker. MiR-99a-5p expression levels were determined by quantitative real-time PCR in three independent cohorts of patients: (I) Discovery cohort: breast cancer tissues ( = 103) and healthy breast tissues ( = 26); (II) Testing cohort: plasma samples from 105 patients and 98 healthy donors; (III) Validation cohort: plasma samples from 89 patients and 85 healthy donors.

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Clinicopathological and imaging features of pulmonary alveolar microlithiasis in a dog - a case report.

BMC Vet Res

October 2020

Department of Veterinary Clinics, Institute of Biomedical Sciences Abel Salazar - University of Porto (ICBAS- UP), Veterinary Hospital of the University of Porto (UPVet), Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal.

Background: The aetiology of pulmonary alveolar microlithiasis (PAM) in animals is still unknown. In humans, this pulmonary disorder is a rare autosomal recessive disorder triggered by a mutation in the gene SLC34A2, which causes deposition and aggregation of calcium and phosphate in the pulmonary parenchyma with formation of microliths. Although histopathological examination is required for a definite diagnosis, in humans, imaging modalities such as computed tomography can demonstrate typical patterns of the disease.

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Characterize DNA methyltransferases/demethylases expression in testicular germ cell tumors (TGCTs). analysis of TCGA database, assessment of transcript levels of most relevant enzymes in four TGCT cell lines and validation in patient cohort (real-time quantitative polymerase chain reaction; immunohistochemistry). , and were the most differentially expressed between seminomas (SEs) and nonseminomas (NSs).

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Protein phosphatase 1 in tumorigenesis: is it worth a closer look?

Biochim Biophys Acta Rev Cancer

December 2020

Laboratory of Signal Transduction, Department of Medical Sciences, Institute of Biomedicine - iBiMED, University of Aveiro, 3810-193, Aveiro, Portugal. Electronic address:

Cancer cells take advantage of signaling cascades to meet their requirements for sustained growth and survival. Cell signaling is tightly controlled by reversible protein phosphorylation mechanisms, which require the counterbalanced action of protein kinases and protein phosphatases. Imbalances on this system are associated with cancer development and progression.

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The purpose of this study is to assess the psychometric properties of the Portuguese version of the Control, Autonomy, Self-realization, and Pleasure (CASP)-12 scale used in the Survey of Health, Aging and Retirement in Europe (SHARE) project. Data were obtained from a representative sample of 1666 people aged ≥50 years living in Portugal and participating in the SHARE wave 6. In addition to the CASP-12 scale, sociodemographic data and health status, activity limitation (GALI), depression (Euro-D) and satisfaction with life scores were collected.

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Background: As part of the multinational I-O Optimise research initiative, this retrospective cohort study of patients with advanced non-small cell lung cancer (NSCLC) evaluated real-world treatment patterns and survival prior to immunotherapy reimbursement in Portugal.

Methods: This study utilized a database held by IPO-Porto, Portugal's largest oncology hospital. Adult patients diagnosed with stage IIIB or IV NSCLC from January 2012 to December 2016 at IPO-Porto, with follow-up to June 2017, were included.

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DNA methylation constitutes the most studied epigenetic mechanism, regulating gene expression in several physiological and pathological states. Targeted methylation polymerase chain reaction (PCR)-based analyses are among the most universal and commonly used techniques in research. They can be of use for validating methylation-based biomarkers to include in clinical practice.

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The disruption of protein-protein interactions as a therapeutic strategy for prostate cancer.

Pharmacol Res

November 2020

Laboratory of Signal Transduction, Department of Medical Sciences, Institute of Biomedicine - iBiMED, University of Aveiro, 3810-193, Aveiro, Portugal. Electronic address:

Prostate cancer (PCa) is one of the most common male-specific cancers worldwide, with high morbidity and mortality rates associated with advanced disease stages. The current treatment options of PCa are prostatectomy, hormonal therapy, chemotherapy or radiotherapy, the selection of which is usually dependent upon the stage of the disease. The development of PCa to a castration-resistant phenotype (CRPC) is associated with a more severe prognosis requiring the development of a new and effective therapy.

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Renal Cell Tumors: Uncovering the Biomarker Potential of ncRNAs.

Cancers (Basel)

August 2020

Cancer Biology and Epigenetics Group, IPO Porto Research Center (CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto), Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal.

Renal cell tumors (RCT) remain as one of the most common and lethal urological tumors worldwide. Discrimination between (1) benign and malignant disease, (2) indolent and aggressive tumors, and (3) patient responsiveness to a specific therapy is of major clinical importance, allowing for a more efficient patient management. Nonetheless, currently available tools provide limited information and novel strategies are needed.

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DNA Methylation as a Therapeutic Target for Bladder Cancer.

Cells

August 2020

Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), 28040 Madrid, Spain.

Bladder cancer (BC) is the tenth most frequent cancer worldwide and is associated with high mortality when diagnosed in its most aggressive form, which is not reverted by the current treatment options. Thus, the development of new therapeutic strategies, either alternative or complementary to the current ones, is of major importance. The disruption of normal epigenetic mechanisms, namely, DNA methylation, is a known early event in cancer development.

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Background: Bladder cancer (BlCa) taxonomy has proved its impact in patient outcome and selection for targeted therapies, but such transcriptomic-based classification has not yet translated to routine practice. Moreover, epithelial-to-mesenchymal transition (EMT) has shown relevance in acquisition of more aggressive BlCa phenotype. We aimed to test the usefulness of the molecular classification, as defined by immunohistochemistry (a routinely performed and easy-to-implement technique), in a well-defined BlCa cohort of both non-muscle invasive (NMIBC) and muscle invasive (MIBC) disease.

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Prediction of relapse in stage I testicular germ cell tumor patients on surveillance: investigation of biomarkers.

BMC Cancer

August 2020

Department of Pathology, Lab. for Exp. Patho-Oncology (LEPO), Erasmus MC-University Medical Center Rotterdam, Cancer Institute, Doctor Molewaterplein 40, 3015, GD, Rotterdam, the Netherlands.

Background: Better biomarkers for assessing risk of relapse in stage I testicular germ cell tumor patients are needed, to complement classical histopathological variables. We aimed to assess the prognostic value of previously suggested biomarkers, related to proliferation (MIB-1 and TEX19) and to immune microenvironment (CXCL12, CXCR4, beta-catenin and MECA-79) in a surveillance cohort of stage I testicular germ cell tumor patients.

Methods: A total of 70 patients were included.

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Aim: To explore how informal caregivers of persons with dementia perceive training needs and preferences in the context of online training and support interventions.

Background: Informal dementia caregivers commonly present high needs across several domains. Paradoxically, they are more likely to have unmet needs and lower levels of service usage when compared to other caregivers.

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