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The aim of this study was to compare the dosimetry of carotid arteries (CAs) using three radiation therapy (RT) techniques, three-dimensional conformal RT (3D-CRT), helical tomotherapy-intensity-modulated RT (HT-IMRT), and volumetric modulated arc therapy (VMAT), in patients with early-stage glottic cancer.

Ana Catarina Domingues,1 Luiz Miguel Santiago,2–4 Ana Rita Rodrigues,5 Beatriz Pires,2 Denise Velho,6 Pedro L Ferreira4,71General Practice and Family Medicine Resident, Family Health Unit Topázio, Health Centers Group of Baixo Mondego, Coimbra, Portugal; 2Faculty of Medicine, University of Coimbra, Coimbra, Portugal; 3Faculty of Medicine, University Clinic of General Practice and Family Medicine, Coimbra, Portugal; 4Centre for Health Studies and Research, University of Coimbra, Coimbra, Portugal; 5Faculty of Health Sciences, University of Beira Interior, Covilha, Portugal; 6Faculty of Health Sciences, University of Beira Interior, Covilha, Portugal; 7Faculty of Economy, University of Coimbra, Coimbra, PortugalObjectives: To translate the Jefferson Scale of Patient Perceptions of Physician Empathy (JSPPPE) to the European Portuguese spoken language and to verify its reliability and validity.Methods: Cultural adaptation and linguistic translation from English to European Portuguese, revision of translations, semantics equivalence, and grammar correction of the Portuguese wording were made. Readability of the Portuguese version was verified and the analysis of internal consistency and correlation with the subscale “physician–patient relationship” of the Portuguese version of European Task Force on Patient Evaluation of General Practice Care Scale (EuroPEP) were made. Reliability was tested by intertemporal stability and internal consistency. Validity of criteria and construction was also verified.Results: The Portuguese translation was adapted to the 8th or 9th grade level, easy to understand. There was the need to change the visual appearance of the scale, answers below sentences. Interclass correlation coefficient for reliability varied between 0.737 and 1.000 and Cronbach’s α between 0.806 and 0.877. Validity was verified by comparing values of socio-demographic variables for JSPPPE index and for EuroPEP with no differences. Correlation values between the total score and its five items varied from 0.806 to 0.934. Criterion validity against EuroPEP had a correlation of 0.831.Conclusion: This study fulfilled the necessary steps to translate, verify the validity and the reliability of the Portuguese version of the JSPPPE, with minimum layout alteration. All five items were maintained. The authors recommend the use of the JSPPPE in research and clinical practice.Keywords: empathy, physician-patient relationship, patient centered medicine

Objective. The objective of this study was to determine the effect on productive performance and carcass characteristics in lambs fed with different amounts of palm kernel cake. Material and methods. Thirty-two Santa Inês lambs, with an initial live body weight of 24.8 ± 3.59 kg were used. Treatments consisted of four levels (0; 6.5;13.0 and 19.5%) of palm kernel cake added to the dry matter diet. Lambs were fed for 80 days, and then slaughtered to be evaluated for the quantitative characteristics of the carcass. Results. Intake of dry matter and non-structural carbohydrates decreased with increasing levels of palm kernel cake. The intake of neutral detergent fiber showed a linear increase. Crude protein and total digestive nutrient intake were not affected. Weight gain, and the feed:gain ratio of dry matter, organic matter, crude protein and total digestive nutrients were similar among the four treatments. There was an increase on the feed:gain ratio of neutral detergent fiber and a decrease of nonstructural carbohydrates. The weight gain at slaughter and biometric measures were not affected by treatment. The carcasscompactness index showed a linear decrease. The indexes of leg muscularity, compactness of the leg and rib eye area were similar among treatments. There was a linear decrease in the cold carcass weight and commercial yield of the carcass. Conclusions. The diet madeof up to 19.5% palm kernel cake reduced DM intake, the carcass compactness index and carcass commercial yield, but did not alter weight gain, or feed dry matter intake.

The aim of this study was to compare the dosimetry of carotid arteries (CAs) using three radiation therapy (RT) techniques, three-dimensional conformal RT (3D-CRT), helical tomotherapy-intensity-modulated RT (HT-IMRT), and volumetric modulated arc therapy (VMAT), in patients with early-stage glottic cancer. A retrospective analysis of 28 patients was performed, and the right and left CAs were delineated. Mean and maximum dose (Dmax) values were compared across the three treatment techniques. The results indicate that 3D-CRT plans had the highest mean and maximum doses to CAs, while VMAT plans had the lowest doses. Our study demonstrates the feasibility of sparing CAs with newer RT modalities. Further clinical studies are needed to determine if these techniques can reduce carotid stenosis-related events. [ABSTRACT FROM AUTHOR]

Re-irradiation as a therapeutic option for locoregional recurrence in patients with recurrent, persistent tumour or second primary malignant neoplasm has great advantages for locally advanced unresectable tumours.

Dietary supplementation with royal jelly (RJ) may improve growth, antioxidant gene expression, and intestinal antioxidant capacity, and possibly mitigate effects of stress induced by high stocking density (HSD) in zebrafish (Danio rerio). Effects of HSD and RJ supplementation on growth performance, antioxidant gene expression, and intestinal antioxidant capacity in zebrafish were investigated. A total of 240 four-month-old zebrafish were used in a 2 x 2 factorial design, with four treatments and three replications. The treatments consisted of normal stocking density (NSD) (1 fish/L) and high stocking density (HSD) (3 fish/L) and an unsupplemented commercial diet (0RJ) and commercial diet supplemented with 10% RJ (10RJ). The experiment lasted 25 days. Daily weight gain, final body length, specific growth rate, and survival were recorded. On day 25, six fish per treatment were euthanised and their intestines analysed for antioxidant capacity, and superoxide dismutase 2 (SOD2) and catalase (CAT) gene expression. There were no effects of diet or SD and diet interaction on growth. High stocking density decreased daily weight gain by 25.31%, body length by 2.70%, and survival by 16.85%. Stocking density (SD) and diet interaction influenced intestinal SOD2 and CAT expression and antioxidant capacity. The HSD/0RJ group had lower antioxidant gene expression and antioxidant capacity than the HSD/10RJ and NSD/0RJ groups. Supplementation with RJ did not mitigate the harmful effects of stocking stress. These results indicate that HSD promotes transcriptional suppression of gene encoding enzymes that form the first line of antioxidant defence, resulting in reduced elimination of toxic substances and occurrence of intestinal oxidative stress. [ABSTRACT FROM AUTHOR]

In this study, Bayesian analysis under a threshold animal model was used to estimate genetic correlations between morphological traits (body structure, finishing precocity and muscling) in Nelore cattle evaluated at weaning and yearling. Visual scores obtained from 7651 Nelore cattle at weaning and from 4155 animals at yearling, belonging to the Brazilian Nelore Program, were used. Genetic parameters for the morphological traits were estimated by two-trait Bayesian analysis under a threshold animal model. The genetic correlations between the morphological traits evaluated at two ages of the animal (weaning and yearling) were positive and high for body structure (0.91), finishing precocity (0.96) and muscling (0.94). These results indicate that the traits are mainly determined by the same set of genes of additive action and that direct selection at weaning will also result in genetic progress for the same traits at yearling. Thus, selection of the best genotypes during only one phase of life of the animal is suggested. However, genetic differences between morphological traits were better detected during the growth phase to yearling. Direct selection for body structure, finishing precocity and muscling at only one age, preferentially at yearling, is recommended as genetic differences between traits can be detected at this age. [ABSTRACT FROM AUTHOR]

Estudo prospectivo visando identificar e comparar que conhecimentos básicos relativos à leishmaniose visceral (LV) têm as populações com características distintas, residentes em áreas periurbanas (Maracanã ­ instalação e ocorrência de casos de LV antigas; Vila Nova/Bom Viver ­ instalação e ocorrência recentes) e rural, Município de Codó ­ instalação antiga e ocorrência recentes. No período compreendido entre agosto de 1996 a janeiro de 1997, aplicou-se questionário com perguntas abertas e fechadas, sendo abordados aspectos referentes à epidemiologia, prevenção, clínica e terapêutica. A população de estudo foi formada pelos casos de LV registrados pela FNS/MA e seus vizinhos. Foram entrevistados os residentes de 283 casas: 53 do Maracanã; 103, em Vila Nova/Bom Viver; 127, em Codó. Foi referido ambiente favorável para o desenvolvimento e manutenção da doença. Do total dos entrevistados, 93,8%, percentual significativo, ouviram falar de LV, por meio de fontes não oficiais. No Maracanã, 50,9% referiram transmissão pelo mosquito; 87,2% reconheciam o envolvimento do cão na cadeia epidemiológica da doença. Os entrevistados estão cientes da gravidade do mal, sendo capazes de identificar casos suspeitos, humano ou canino. Medidas de controle são desconhecidas por 77,8%. Sete pessoas sabiam que o Glucantime® é usado no tratamento da LV. Concluiu-se que o nível de conhecimento sobre LV foi baixo, principalmente em relação à prevenção e à terapêutica, situação semelhantes nas três áreas.

Several protocols for the analysis of amphetamine-type stimulants (ATS) in hair have been developed over the years, with microextraction by packed sorbent (MEPS) being used for drugs like opiates, cocaine and ketamine. However, concerning ATS determination in hair samples, this approach has only been applied so far to amphetamine (AMP) and methamphetamine (MAMP). This study aimed at developing and validating a MEPS-based procedure for the determination in hair of not only AMP and MAMP but also of 3,4-methylenedioxyamphetamine (MDA), 3,4-methylenedioxymethamphetamine (MDMA), 1-(1,3-benzodioxol-5-yl)propan-2-yl (ethyl)amine (MDE) and N-methyl-1-(1,3-benzodioxol-5-yl)-2-aminobutane (MBDB) as well. Hair, 50 mg, was incubated with 1 M sodium hydroxide (NaOH) at 45°C overnight, neutralization with 10 M hydrochloric acid (HCl) and centrifugation followed. The design of experiments approach was used for MEPS optimization, with the final optimized conditions including conditioning (250 μL methanol and deionized water), loading (18 × 100 μL) and elution (7 × 100 μL 2% NH 4 OH in acetonitrile). The eluted extract was evaporated to dryness and underwent microwave-assisted derivatization with N-methyl-bis(trifluoroacetamide) (MBTFA), and it was afterwards injected onto the gas chromatography-mass spectrometer (GC-MS). The obtained recoveries ranged between 8% and 14% for AMP, 14% and 20% for MAMP, 10% and 15% for MDA, 18% and 28% for MDMA, 25% and 43% for MDE and 34% and 52% for MBDB, and the method was linear from 0.2 to 5.0 ng/mg. Precision and accuracy were in accordance with international method validation guidelines. This novel method involving MEPS coupled to GC-MS offers a swift, eco-friendly and cost-effective alternative to traditional procedures for detecting these AMPs in hair samples., (© 2024 John Wiley & Sons Ltd.)

Human papillomavirus (HPV)-associated cervical cancer is the most common cancer among women worldwide. The treatment options are strongly related to increased infertility in women. Imiquimod (IQ) is an imidazoquinoline, which has proven antiviral effects against persistent HPV infection by activating immune cells via Toll-like receptors 7/8 when formulated in carriers, like nanogels, for topical use. An effective alternative to conventional therapies is the nanoparticle drug delivery system. We studied lipidic nanoparticles with IQ (Lipo IQ) and functionalized them with a DNA aptamer, AT11 (Lipo IQ AT11), to improve the selectivity for cervical cancer cells combined with the efficacy of essential oils. The formulations showed that the physicochemical properties are adequate for vaginal drug delivery and have antimicrobial activity at higher concentrations (with MIC 50 starting from 0.625%). The final formulations exhibited cytotoxicity in cancer cells, enhanced by essential oils without affecting healthy cells, resulting in less than 10% cell viability in HeLa cells and over 60% in NHDF cells. Essential oils potentiate Lipo IQ's effectiveness, while AT11 increases the selectivity for cervical cancer cells. As suggested by the results of the permeation assay, the formulations were internalized by the cancer cells. Overall, the obtained results suggested that the synergistic effect of the essential oils and the nanosystem potentiate the cytotoxic effect of Lipo IQ and that Lipo IQ AT11 promotes selectivity towards cancer cells.

Coumarins have great pharmacotherapeutic potential, presenting several biological and pharmaceutical applications, like antibiotic, fungicidal, anti-inflammatory, anticancer, anti-HIV, and healing activities, among others. These molecules are practically insoluble in water, and for biological applications, it became necessary to complex them with cyclodextrins (CDs), which influence their bioavailability in the target organism. In this work, we studied two coumarins, and it was possible to conclude that there were structural differences between 4,7-dimethyl-2 H -chromen-2-one (DMC) and 7-methoxy-4-methyl-2 H -chromen-2-one (MMC)/β-CD that were solubilized in ethanol, frozen, and lyophilized (FL) and the mechanical mixtures (MM). In addition, the inclusion complex formation improved the solubility of DMC and MMC in an aqueous medium. According to the data, the inclusion complexes were formed and are more stable at a molar ratio of 2:1 coumarin/β-CD, and hydrogen bonds along with π-π stacking interactions are responsible for the better stability, especially for (MMC) 2 @β-CD. In vivo wound healing studies in mice showed faster re-epithelialization and the best deposition of collagen with the (DMC) 2 @β-CD (FL) and (MMC) 2 @β-CD (FL) inclusion complexes, demonstrating clearly that they have potential in wound repair. Therefore, (DMC) 2 @β-CD (FL) deserves great attention because it presented excellent results, reducing the granulation tissue and mast cell density and improving collagen remodeling. Finally, the protein binding studies suggested that the anti-inflammatory activities might exert their biological function through the inhibition of MEK, providing the possibility of development of new MEK inhibitors.

Cannabis-based products have gained attention in recent years for their perceived therapeutic benefits (with cannabinoids such as THC and CBD) and widespread availability. However, these products often lack accurate labelling regarding their cannabinoid content. Our study, conducted with products available in Portugal, revealed significant discrepancies between label claims and actual cannabinoid compositions. A fully validated method was developed for the characterisation of different products acquired from pharmacies and street shops (beverages, herbal samples, oils, and cosmetic products) using high-performance liquid chromatography coupled with a diode array detector. Linearity ranged from 0.4 to 100 µg/mL (0.04-10 µg/mg) (THC, 8-THC, CBD, CBG, CBDA, CBGA), 0.1-100 µg/mL (0.01-10 µg/mg) (CBN), 0.4-250 µg/mL (0.04-25 µg/mg) (THCA-A), and 0.8-100 µg/mL (0.08-10 µg/mg) (CBCA). Among sampled beverages, none contained detectable cannabinoids, despite suggestive packaging. Similarly, oils often differed from the declared cannabinoid compositions, with some containing significantly higher CBD concentrations than labelled. These inconsistencies raise serious concerns regarding consumer safety and informed decision-making. Moreover, our findings underscore the need for stringent regulation and standardised testing protocols to ensure the accuracy and safety of cannabis-based products.