Publications by authors named "Palma N"

Article Synopsis
  • Early detection of pancreatic ductal adenocarcinoma (PDAC) is crucial for improving survival, but current methods like imaging and the CA19-9 blood test lack sensitivity for early-stage tumors.
  • A study was conducted to identify a blood-based protein signature that performs better than CA19-9, analyzing approximately 3000 proteins and using machine learning to create multiple biomarker signatures.
  • The new signatures showed significant improvements, achieving 84% sensitivity at 95% specificity, compared to CA19-9’s 53% sensitivity, and identified 41 promising biomarker candidates for further validation.
View Article and Find Full Text PDF

A simple method set for assessing biochemical changes associated with osmotic stress responses was developed using coffee (Coffea arabica L.) leaf disks. Stress was induced by polyethylene glycol (PEG) exposure.

View Article and Find Full Text PDF

Portugal's real income per head grew by a factor of eight during the second half of the twentieth century, a period of fast convergence towards Western European living standards. We use a new sample of about 3,400 infants and children living in Lisbon to document trends in the prevalence of stunting and wasting between 1906 and 1994. We find that stunting and wasting fell quickly from around 1950, for both males and females.

View Article and Find Full Text PDF

Objective: There is limited data about the impact of mood disorders treatment guidelines on clinical outcomes. The objective of this study was to investigate the impact of prescribers' adherence to the 2018 Canadian Network for Mood and Anxiety Treatments (CANMAT) and International Society for Bipolar Disorders (ISBD) treatment guidelines recommendations on the readmission rates of patients hospitalized for mania.

Method: A retrospective cohort of all individuals admitted due to acute mania to Kingston General Hospital, Kingston, ON, from January 2018 to July 2021 was included in this study.

View Article and Find Full Text PDF

Hepatocellular carcinoma (HCC) is the third most common cause of death from cancer worldwide. Therapeutic strategies are still challenging due to the high relapse rate after surgery and multidrug resistance (MDR). It is essential to better understand the mechanisms for HCC progression and MDR for the development of new therapeutic strategies.

View Article and Find Full Text PDF

Under natural conditions plants are generally subjected to complex scenarios of combined or sequential environmental stresses. Among the various components of plant biochemistry modulated by abiotic variables, a pivotal role is played by antioxidant systems, including specialized metabolites and their interaction with central pathways. To help address this knowledge gap, a comparative analysis of metabolic changes in leaf tissues of the alkaloid accumulating plant Psychotria brachyceras Müll Arg.

View Article and Find Full Text PDF

Furan is a volatile compound that is formed in foods during thermal processing. It is classified as a possible human carcinogen by international authorities based on sufficient evidence of carcinogenicity from studies in experimental animals. Although a vast number of studies both in vitro and in vivo have been performed to investigate furan genotoxicity, the results are inconsistent, and its carcinogenic mode of action remains to be clarified.

View Article and Find Full Text PDF

Objectives: These 2 parallel studies (K031 and K032) aim to evaluate the safety of KB109 in addition to supportive self-care (SSC) compared with SSC alone in outpatients with mild to moderate coronavirus disease 2019 (COVID-19). KB109 is a novel synthetic glycan that was formulated to modulate the gut microbiome composition and metabolic output in order to increase beneficial short-chain fatty acid (SCFA) production in the gut. The K031 study is designed to evaluate the safety of KB109 and characterize its impact on the natural progression of COVID-19 in patients with mild to moderate disease.

View Article and Find Full Text PDF

Social vulnerability refers to the ways in which an individual is at risk of being victimised. The Test of Interpersonal Competences and Personal Vulnerability [TICPV] is an Australian assessment tool designed for adults with intellectual disabilities (ID) [Wilson et al. (1996).

View Article and Find Full Text PDF

Medical image segmentation is an important tool for current clinical applications. It is the backbone of numerous clinical diagnosis methods, oncological treatments and computer-integrated surgeries. A new class of machine learning algorithm, deep learning algorithms, outperforms the results of classical segmentation in terms of accuracy.

View Article and Find Full Text PDF

Unlabelled: Pulmonary arteriovenous malformations (PAVMs) are rare vascular anomalies. Alternative designations are pulmonary arteriovenous fistulae or aneurysms. Although mostly asymptomatic, PAVMs can cause respiratory symptoms due to right-to-left shunt.

View Article and Find Full Text PDF
Article Synopsis
  • The sexually transmitted pathogen can cause disseminated gonococcal infection (DGI), which manifests through symptoms like skin lesions, joint pain, and more.
  • The CDC has warned that drug-resistant strains of this pathogen, especially cephalosporin resistance, are becoming urgent public health threats.
  • A case study highlighted a young woman treated successfully with intravenous ceftriaxone after DGI was confirmed, emphasizing the need for clinicians to recognize this rare but reemerging condition.
View Article and Find Full Text PDF

Unlabelled: Heyde's syndrome is a form of acquired von Willebrand syndrome that consists of bleeding from intestinal angiodysplasia in the presence of aortic stenosis (AS). An association with obstructive hypertrophic cardiomyopathy, rather than AS, by a similar mechanism has also been described. We report the case of a 78-year-old woman with chronic anaemia and hypertrophic obstructive cardiomyopathy in whom intestinal angiodysplasia with active bleeding was identified by an unconventional method.

View Article and Find Full Text PDF

Unlabelled: Botulism is rare neuroparalytic disease caused by botulinum toxin, one of the most toxic substances known. Foodborne botulism is caused by consumption of foods contaminated with botulinum toxin. The clinical manifestations are flaccid, symmetrical, descending paralysis affecting cranial and peripheral nerves.

View Article and Find Full Text PDF

Objective.: The objective of this study was to describe the presence of Enterobacteriaceae in meat samples collected in traditional markets of Lima and to establish the levels of antimicrobial resistance and the presence of extended spectrum beta-lactamases (BLEE) and AmpC in Escherichia coli.

Materials And Methods.

View Article and Find Full Text PDF

Purpose: The promise of precision oncology is that identification of genomic alterations will direct the rational use of molecularly targeted therapy. This approach is particularly applicable to neoplasms that are resistant to standard cytotoxic chemotherapy, like T-cell leukemias and lymphomas. In this study, we tested the feasibility of targeted next-generation sequencing in profiles of diverse T-cell neoplasms and focused on the therapeutic utility of targeting activated JAK1 and JAK3 in an index case.

View Article and Find Full Text PDF

Objectives: To characterise the β-lactam, quinolone and macrolide resistance levels and mechanisms in 62 Escherichia coli isolates causing bacteraemia in Peruvian children.

Methods: Minimum inhibitory concentrations (MICs) of ciprofloxacin, nalidixic acid (NAL) and azithromycin were determined in the presence and absence of Phe-Arg-β-naphthylamide. Susceptibility to other 14 antimicrobial agents was also established.

View Article and Find Full Text PDF

Background: Gangliogliomas are slow-growing, low-grade central nervous system tumors affecting children and young adults. However, some patients will experience tumor recurrence and/or malignant progression. This article reports on the clinical history, molecular findings, and treatment response in a patient with BRAF V600-mutated high-grade glioma arising from ganglioglioma.

View Article and Find Full Text PDF

From its introduction in 1952 onwards, the clinical use of macrolides has been steadily increasing, both in human and veterinary medicine. Although initially designed to the treatment of Gram-positive microorganisms, this antimicrobial family has also been used to treat specific Gram-negative bacteria. Some of them, as azithromycin, are considered in the armamentarium against Enterobacteriaceae infections.

View Article and Find Full Text PDF

Background: Bartonella bacilliformis is the causative agent of Carrion's disease, a neglected illness with mortality rates of 40-85% in the absence of treatment. The lack of a diagnostic technique to overcome misdiagnosis and treat asymptomatic carriers is of note. This study aimed to identify new B.

View Article and Find Full Text PDF

Background: The frequency with which targeted tumor sequencing results will lead to implemented change in care is unclear. Prospective assessment of the feasibility and limitations of using genomic sequencing is critically important.

Methods: A prospective clinical study was conducted on 100 patients with diverse-histology, rare, or poor-prognosis cancers to evaluate the clinical actionability of a Clinical Laboratory Improvement Amendments (CLIA)-certified, comprehensive genomic profiling assay (FoundationOne), using formalin-fixed, paraffin-embedded tumors.

View Article and Find Full Text PDF

The presence of 25 virulence genes (VGs), genetic phylogroups, quinolone-resistance and Extended Spectrum β-lactamase (ESBL)-production was assessed in 65 Escherichia coli isolates from blood cultures in children <5 years in Peru. The most frequent VGs were fimA (89.2%), iutA (83.

View Article and Find Full Text PDF

Background: Squamous cell cancers of the anal canal (ASCC) are increasing in frequency and lack effective therapies for advanced disease. Although an association with human papillomavirus (HPV) has been established, little is known about the molecular characterization of ASCC. A comprehensive genomic analysis of ASCC was undertaken to identify novel genomic alterations (GAs) that will inform therapeutic choices for patients with advanced disease.

View Article and Find Full Text PDF

Background: Advanced penile squamous cell carcinoma (PSCC) is associated with poor survival due to the aggressiveness of the disease and lack of effective systemic therapies. Comprehensive genomic profiling (CGP) was performed to identify clinically relevant genomic alterations (CRGAs).

Materials And Methods: DNA was extracted from 40 μm of formalin-fixed, paraffin-embedded sections in patients with advanced PSCC.

View Article and Find Full Text PDF