Mem Inst Oswaldo Cruz
December 2024
Background: Although blood transfusion is an essential therapeutic procedure, it can present risks, including transmitting infectious diseases, such as malaria. In Acre, the thick blood smear microscopic examination (TBS) is used to screen infected malaria blood donors. However, TBS has low sensitivity for detecting Plasmodium in situations of low parasitaemia, such as those presented by asymptomatic clinically healthy individuals.
View Article and Find Full Text PDFMetal complexes are emerging as promising alternatives to traditional platinum-based cancer treatments, offering reduced side effects. However, understanding their cellular uptake and distribution and quantifying their presence at the single cell level remains challenging. Advanced imaging techniques, including transmission electron microscopy, synchrotron radiation X-ray fluorescence, and energetic ion beam-based nuclear microscopy (scanning transmission ion microscopy, particle-induced X-ray emission, elastic backscattering spectrometry), allow detailed high-resolution visualization of structure and morphology, high sensitivity for elemental detection with quantification within single cells, and the construction of 3D models of metal distribution, positioning them as powerful tools for assessing the cellular uptake and compartmentalization of complexes.
View Article and Find Full Text PDFIndian J Otolaryngol Head Neck Surg
October 2024
Vet Parasitol Reg Stud Reports
October 2024
Objective: To analyze the experiences of transgender women and travestis regarding the use of hormones for body changes without a medical prescription.
Methods: This is a cross-sectional, quantitative and qualitative study, using data from "TransOdara", which estimated the prevalence of Sexually Transmitted Infections in transgender women and travestis recruited through Respondent-Driven Sampling, between December 2019 and July 2021, in São Paulo, Campo Grande, Manaus, Porto Alegre, and Salvador, Brazil. The main outcome was: use of hormones without medical prescription and associated risk factors.
Objective: To understand the narratives of transgender women and travestis (TGW) from four Brazilian cities regarding access to and use of health services.
Methods: Qualitative study carried out within the scope of the TransOdara project, cross-sectional multicenter mixed methods research conducted between 2019-2021. Fifty-two in-depth interviews with TGW in Manaus, Campo Grande, Porto Alegre and São Paulo were analyzed.
Objective: Sexually transmitted infections (STIs) disproportionately affect transgender women and travestis (TGW), who often lack access to healthcare due to stigma and discrimination. We describe the approach and methodology of a study investigating the prevalence of syphilis, HIV, hepatitis A, B, and C, Neisseria gonorrhoeae (NG), Chlamydia trachomatis (CT), and human papillomavirus (HPV) among TGW, as well as their knowledge and perceptions regarding syphilis, to better inform policies to curb STIs among this vulnerable population.
Methods: TransOdara was a multicentric, cross-sectional study conducted among TGW in five capital cities from major Brazilian regions between December 2019 and July 2021.
Anticancer drugs inhibit DNA replication by intercalating between DNA base pairs, forming covalent bonds with nucleotide bases, or binding to the DNA groove. To develop safer drugs, novel molecular structures with alternative binding mechanisms are essential. Stable boron hydrides offer a promising alternative for cancer therapy, opening up additional options like boron neutron capture therapy based on B and thermal neutron beams or proton boron fusion therapy using B and proton beams.
View Article and Find Full Text PDFCOVID-19 induces acute and persistent neurological symptoms in mild and severe cases. Proposed concomitant mechanisms include direct viral infection and strain, coagulopathy, hypoxia, and neuroinflammation. However, underlying molecular alterations associated with multiple neurological outcomes in both mild and severe cases are majorly unexplored.
View Article and Find Full Text PDFMonoanionic gold bis(dithiolene) complexes were recently shown to display activity against ovarian cancer cells, Gram-positive bacteria, strains and the rodent malaria parasite, . To date, only monoanionic gold(III) bis(dithiolene) complexes with a thiazoline backbone substituted with small alkyl chains have been evaluated for biomedical applications. We now analyzed the influence of the length and the hydrophobicity hydrophilicity of these complexes' alkyl chain on their anticancer and antiplasmodial properties.
View Article and Find Full Text PDFThe aim of this study was to evaluate the influence of liver fibrosis (LF) on the expression of Toll-like receptors (TLR) 2 and 4 in apical periodontitis (AP) in Wistar rats. Forty Wistar rats were allocated in the following groups (n = 10): C-control; AP-apical periodontitis; LF-liver fibrosis; AP + LF-rats with AP and LF. LF and AP were induced by established methodologies.
View Article and Find Full Text PDFCyanobacterial blooms have been a growing problem in water bodies and attracted attention from researcher and water companies worldwide. Different treatment methods have been researched and applied either inside water treatment plants or directly into reservoirs. We tested a combination of coagulants, polyaluminium chloride (PAC) and iron(III) chloride (FeCl), and ballasts, luvisol (LUV) and planosol (PLAN), known as the 'Floc and Sink' technique, to remove positively buoyant cyanobacteria from a tropical reservoir water.
View Article and Find Full Text PDFDirect Laser Writing (DLW) has been increasingly selected as a microfabrication route for efficient, cost-effective, high-resolution material synthesis and conversion. Concurrently, lasers participate in the patterning and assembly of functional geometries in several fields of application, of which electronics stand out. In this review, recent advances and strategies based on DLW for electronics microfabrication are surveyed and outlined, based on laser material growth strategies.
View Article and Find Full Text PDFCranial suture diastases are an uncommon clinical entity, with post craniotomy diastases being a previously undescribed finding in literature to our best knowledge. Herein, we report a case of a 28-year-old adult who underwent a second-stage low-grade glioma surgery 7 months after initial surgery. This study presents coronal suture diastases adjacent to the previously performed craniotomy.
View Article and Find Full Text PDFCyanotoxins pose a health threat when present in the drinking water supply since conventional water treatment processes are not effective in removing extracellular metabolites hence, advanced treatment techniques are usually applied. Powdered activated carbon (PAC) is an effective adsorbent for removing toxins. However, since a high volume is necessary, alternative adsorbents have been investigated.
View Article and Find Full Text PDFEndocrinol Diabetes Nutr (Engl Ed)
November 2023
SAGE Open Med
October 2023
Thirst is a real bother that most patients feel in the immediate postoperative period when they still need to fast. Many approaches regarding symptomatic relief strategies have been described in the literature, but strategies with cold water and/or menthol are effective in quenching thirst, as they act on pre-absorptive mechanisms. This study aims to evaluate the effectiveness of using menthol popsicles in relieving postoperative thirst in patients undergoing radical prostatectomy.
View Article and Find Full Text PDFBackground: Pain in the postoperative period of amputation surgeries, when not managed correctly, can have consequences for the patient.
Purposes And Objectives: The aim of this study was to map the scientific evidence on pain management in patients in the postoperative period of amputation surgeries.
Design: Scoping review with elaboration based on the recommendations of the Joanna Briggs Institute, supported by The PAGER framework and guided by the PRISMA-ScR Checklist.
Four new Cu(I) complexes of the general formula [Cu(PP)(LL)][BF ], in which PP is a phosphane ligand (triphenylphosphane or 1,2-bis(diphenylphosphano)ethane (dppe)) and LL is a bioactive thiosemicarbazone ligand (4-(methyl)-1-(5-nitrofurfurylidene)thiosemicarbazone) or 4-(ethyl)-1-(5-nitrofurfurylidene)thiosemicarbazone) were synthesized and fully characterized by classical analytical and spectroscopic methods. The anti-trypanosome and anticancer activities were investigated in vitro on Trypanosoma cruzi and in two human cancer cell lines (ovarian OVCAR3 and prostate PC3). To test the selectivity toward parasites and cancer cells, the cytotoxicity on normal monkey kidney VERO and human dermal fibroblasts HDF cells was also evaluated.
View Article and Find Full Text PDFTo investigate the effect of ELVAX polymer subgingival implants incorporated with echistatin peptide on incisor reimplanted tooth in rats. Forty-two male Wistars rats were divided into two groups: echistatin-treated rats (E) and control rats (C). The animals had their right maxillary incisors extracted and treated according to the International Association of Dental Traumatology replantation protocol.
View Article and Find Full Text PDFPhotodiagnosis Photodyn Ther
June 2023
This manuscript presents the first report on antimicrobial photo-inactivation in vitro using tetra-cationic porphyrins with peripheral platinum(II) bipyridyl complexes against Gram-positive bacteria. Two isomeric tetra-cationic porphyrins (3TPyP and 4TPyP) were tested against clinically important bacterial species. The antimicrobial activity assays were performed at specific photosensitizer (PS) concentrations under dark and white-light LED irradiation conditions for 120 min.
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