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Abstract Background Endometriosis is a gynecological disease characterized by the presence of endometrial tissue in abnormal locations, leading to severe symptoms, inflammation, pain, organ dysfunction, and infertility. Surgical removal of endometriosis lesions is crucial for improving pain and fertility outcomes, with the goal of complete lesion removal. This study aimed to analyze the location and expression patterns of poly (ADP-ribose) polymerase 1 (PARP-1), epithelial cell adhesion molecule (EpCAM), and folate receptor alpha (FRα) in endometriosis lesions and evaluate their potential for targeted imaging. Methods Gene expression analysis was performed using the Turku endometriosis database (EndometDB). By immunohistochemistry, we investigated the presence and distribution of PARP-1, EpCAM, and FRα in endometriosis foci and adjacent tissue. We also applied an ad hoc platform for the analysis of images to perform a quantitative immunolocalization analysis. Double immunofluorescence analysis was carried out for PARP-1 and EpCAM, as well as for PARP-1 and FRα, to explore the expression of these combined markers within endometriosis foci and their potential simultaneous utilization in surgical treatment. Results Gene expression analysis revealed that PARP-1, EpCAM, and FOLR1 (FRα gene) are more highly expressed in endometriotic lesions than in the peritoneum, which served as the control tissue. The results of the immunohistochemical study revealed a significant increase in the expression levels of all three biomarkers inside the endometriosis foci compared to the adjacent tissues. Additionally, the double immunofluorescence analysis consistently demonstrated the presence of PARP-1 in the nucleus and the expression of EpCAM and FRα in the cell membrane and cytoplasm. Conclusion Overall, these three markers demonstrate significant potential for effective imaging of endometriosis. In particular, the results emphasize the importance of PARP-1 expression as a possible indicator for distinguishing endometriotic lesions from adjacent tissue. PARP-1, as a potential biomarker for endometriosis, offers promising avenues for further investigation in terms of both pathophysiology and diagnostic-therapeutic approaches.

This study examined social determinants associated with Korean American immigrant women’s mammography use in Korea after immigration to the United States. Data from a cross-sectional survey were obtained from 187 women in Los Angeles County, California. More than one-quarter (28.3%) of the respondents reported returning to Korea for a mammogram after immigrating to the United States. Multivariable logistic regression revealed that compared to those who had their first mammogram in Korea, Korean American immigrant women who had their first mammogram in the United States were less likely to return to Korea for subsequent screenings (AOR = 0.02, 95% CI:

RESUMO Objetivo Verificar a influência das habilidades intelectuais-cognitivas verbais na percepção de fala no ruído, em idosos com perda auditiva sensorioneural, considerando a escolaridade, a idade e o grau da perda auditiva. Método Participaram 36 idosos entre 60 e 89 anos com perda auditiva sensorioneural bilateral, que após avaliação psicológica por meio do Wechsler Intelligence Scale for Adults (WAIS III), foram divididos em (GI) 24 idosos sem alteração cognitiva e (GII) 12 idosos com risco de alteração cognitiva. Foram submetidos à avaliação otorrinolaringológica, entrevista audiológica, audiometria tonal liminar e a avaliação da percepção de fala no ruído por meio do Hearing in Noise Test (HINT-Brasil). O teste estatístico U de Mann-Whitney comparou os resultados entre os grupos, e a correlação de Spearman verificou as variáveis idade, grau da perda auditiva e nível de escolaridade. Resultados Não houve diferença entre os grupos na habilidade de percepção de fala no ruído, exceto na condição ruído à esquerda, no qual o GII apresentou melhor desempenho no HINT-Brasil. O grau da perda auditiva e o nível de escolaridade influenciaram na percepção de fala no ruído. O nível de escolaridade teve correlação com os resultados do WAIS III. Conclusão O declínio das habilidades intelectuais-cognitivas verbais não interferiu na percepção de fala no ruído nos idosos com perda auditiva. O grau da perda auditiva e o nível de escolaridade influenciaram no desempenho dos idosos no teste de percepção de fala no ruído. O desempenho nas habilidades cognitivas verbais variou com o nível de escolaridade.

Background: Pneumonia occurs in about 20% of trauma patients with pulmonary contusions. This study aims to evaluate the association between empirical antibiotic therapy and nosocomial pneumonia in this population. Methods: Retrospective cohort of adult patients admitted to a trauma-surgical ICU. The Antibiotic Therapy Group (ATG) was defined by intravenous antibiotic use for more than 48 h starting on hospital admission, while the Conservative Group (CG) was determined by antibiotic use no longer than 48 h. Primary outcome was microbiologically documented nosocomial pneumonia within 14 days after hospital admission. Logistic regression was used to estimate the association between group allocation and primary outcome. Exploratory analyses evaluating the association between resistant strains in pneumonia and antibiotic use were performed. Results: The study included 177 patients with chest trauma and pulmonary contusion on CT scan. ATG were more severely ill than CG, as shown by higher Injury Severity Score, SAPS3, SOFA score, higher rates, and longer duration of mechanical ventilation. In the multivariate analysis, ATG was associated with a lower incidence of primary outcome (OR = 0.25, 95% CI 0.09–0.64; p < 0.01). Similar results were found in the sensitivity analysis with another set of variables. However, each day of antibiotic use was associated with an increased risk of pneumonia by resistant bacteria (OR = 1.18 per day, 95% CI 1.05–1.36; p < 0.01). Conclusions: Empiric antibiotic therapy was independently associated with lower incidence of nosocomial pneumonia in critically ill patients with pulmonary contusion. However, each day of antibiotic use was associated with increased resistant strains in infected patients.

This paper details the comprehensive design and prototyping of a 3D-printed wearable device tailored for mouse models which addresses the need for non-invasive applications in spinal cord studies and therapeutic treatments. Our work was prompted by the increasing demand for wearable devices in preclinical research on freely behaving rodent models of spinal cord injury. We present an innovative solution that employs compliant 3D-printed structures for stable device placement on the backs of both healthy and spinal cord-injured mice. In our trial, the device was represented by two magnets that applied passive magnetic stimulation to the injury site. This device was designed to be combined with the use of magnetic nanoparticles to render neurons or neural cells sensitive to an exogenous magnetic field, resulting in the stimulation of axon growth in response to a pulling force. We show different design iterations, emphasizing the challenges faced and the solutions proposed during the design process. The iterative design process involved multiple phases, from the magnet holder (MH) to the wearable device configurations. The latter included different approaches: a “Fitbit”, “Belt”, “Bib”, and ultimately a “Cape”. Each design iteration was accompanied by a testing protocol involving healthy and injured mice, with qualitative assessments focusing on animal wellbeing. Follow-up lasted for at least 21 consecutive days, thus allowing animal welfare to be accurately monitored. The final Cape design was our best compromise between the need for a thin structure that would not hinder movement and the resistance required to maintain the structure at the correct position while withstanding biting and mechanical stress. The detailed account of the iterative design process and testing procedures provides valuable insights for researchers and practitioners engaged in the development of wearable devices for mice, particularly in the context of spinal cord studies and therapeutic treatments. Finally, in addition to describing the design of a 3D-printed wearable holder, we also outline some general guidelines for the design of wearable devices.

Fatalism is reported as a salient cultural belief that influences cancer screening disparities in racial and ethnic minority groups. Previous studies provide a range of measures and descriptions of cancer fatalism, but no studies to our knowledge have analyzed how fatalistic views cluster together within subgroups to form distinct profiles, and how these profiles can be predicted. This study identified subgroups of Korean American immigrants with similar fatalistic beliefs toward cancer and examined the influence of fatalism, health belief variables, and health literacy on mammography use. A cross-sectional survey design was used to obtain a convenience sample of 240 Korean American immigrant women in Los Angeles, California. Latent class analysis was used to identify unobserved subgroups of fatalism. Hierarchical logistic regression models were used to identify predisposing, enabling, and need factors associated with recent mammography use. The latent class analysis model identified three cancer fatalism subgroups: high fatalism (17.8%), moderate fatalism (36.7%), and low fatalism (45.5%). Women in the high fatalism subgroup were more likely to have had a mammogram within the past 2 years than women in the low fatalism subgroup. Regression analysis revealed three facilitators of recent mammogram use: level of fatalism, perceived barriers to mammogram, and family history of cancer. Although cultural beliefs can have a powerful influence on health-seeking behavior, it is important to weigh individual and contextual factors that may weaken or mediate the relationship between fatalism and engaging in preventive care such as having a mammogram.

Proteases represent common targets in combating infectious diseases, including COVID-19. The 3-chymotrypsin-like protease (3CLpro) is a validated molecular target for COVID-19, and it is key for developing potent and selective inhibitors for inhibiting viral replication of SARS-CoV-2. In this review, we discuss structural relationships and diverse subsites of 3CLpro, shedding light on the pivotal role of dimerization and active site architecture in substrate recognition and catalysis. Our analysis of bioinformatics and other published studies motivated us to investigate a novel catalytic mechanism for the SARS-CoV-2 polyprotein cleavage by 3CLpro, centering on the triad mechanism involving His41-Cys145-Asp187 and its indispensable role in viral replication. Our hypothesis is that Asp187 may participate in modulating the pKa of the His41, in which catalytic histidine may act as an acid and/or a base in the catalytic mechanism. Recognizing Asp187 as a crucial component in the catalytic process underscores its significance as a fundamental pharmacophoric element in drug design. Next, we provide an overview of both covalent and non-covalent inhibitors, elucidating advancements in drug development observed in preclinical and clinical trials. By highlighting various chemical classes and their pharmacokinetic profiles, our review aims to guide future research directions toward the development of highly selective inhibitors, underscore the significance of 3CLpro as a validated therapeutic target, and propel the progression of drug candidates through preclinical and clinical phases.

Abstract Background Children with disabilities and their families are at higher risk during emergencies and disasters, which is often attributed to the lack of disability inclusion in emergency response as well as disparities in preparedness. This disparity speaks to a need for emergency preparedness that centers children with disabilities and their families. The purpose of this study was to elicit the perspectives of health professionals (nurses, occupational therapists, social workers), disability advocates, and public safety personnel (e.g., fire fighters, police officers, emergency management administrators) on what would enable these types of professionals to support family-centered emergency preparedness for families who care for children with disabilities. One goal of this research is to provide recommendations for practice and policy to improve safety outcomes for children with disabilities and their families in emergency situations. Methods This study consisted of 46 qualitative interviews with nurses, occupational therapists, social workers, public safety personnel, and advocacy organization representatives about their role in emergency preparedness for families of children with disabilities. Qualitative content analysis was used to identify themes from participants’ responses. Results Participants expressed interest in family-centered emergency preparedness, and stated that greater awareness, more education and training, increased networking between professions, and institutional support would enable their involvement. Conclusions These findings have implications for the importance of interprofessional collaboration in supporting family-centered emergency preparedness for families of children with disabilities. Stronger interprofessional networks would help overcome many of the barriers identified by participants, and advocacy groups appear to be well-positioned to bridge the gap between these professionals and their areas of expertise.

Objective: Using social cognitive theory as a framework, this study examined electronic nicotine delivery systems (ENDS) use, related cognitions, and context among college students. Participants: Respondents were 1229 students attending a mid-sized, northeastern university. Methods: A cross-sectional survey was administered and SPSS was used for analysis. Results: Almost 41% of respondents reported ENDS use in the prior month (past-month user), 26.8% reported trying ENDS but no use in the prior month (occasional user), and 32.3% reported never trying ENDS. The results highlight significant associations in past-month versus occasional use and reasons for initation, location for ENDS use, perceived norms for ENDS use, and outcome expectations for ENDS use. Conclusions: This study highlights a need for theory-based, multi-level strategies to reduce ENDS use. Interventions should increase awareness about the risks of ENDS, include peer-based interventions to foster health-promoting campus social environments, and explore the use of policies restricting campus ENDS use.

Background: Reelin has fundamental functions in the developing and mature brain. Its absence gives rise to the Reeler phenotype in mice, the first described cerebellar mutation. In homozygous mutants missing the Reelin gene ( reln -/-), neurons are incapable of correctly positioning themselves in layered brain areas such as the cerebral and cerebellar cortices. We here demonstrate that by employing ex vivo cultured cerebellar slices one can reduce the number of animals and use a non-recovery procedure to analyze the effects of Reelin on the migration of Purkinje neurons (PNs). Methods: We generated mouse hybrids (L7-GFP relnF1/) with green fluorescent protein (GFP)-tagged PNs, directly visible under fluorescence microscopy. We then cultured the slices obtained from mice with different reln genotypes and demonstrated that when the slices from reln -/- mutants were co-cultured with those from reln +/- mice, the Reelin produced by the latter induced migration of the PNs to partially rescue the normal layered cortical histology. We have confirmed this observation with Voronoi tessellation to analyze PN dispersion. Results: In images of the co-cultured slices from reln -/- mice, Voronoi polygons were larger than in single-cultured slices of the same genetic background but smaller than those generated from slices of reln +/- animals. The mean roundness factor, area disorder, and roundness factor homogeneity were different when slices from reln -/- mice were cultivated singularly or co-cultivated, supporting mathematically the transition from the clustered organization of the PNs in the absence of Reelin to a layered structure when the protein is supplied ex vivo. Conclusions: Neurobiologists are the primary target users of this 3Rs approach. They should adopt it for the possibility to study and manipulate ex vivo the activity of a brain-secreted or genetically engineered protein (scientific perspective), the potential reduction (up to 20%) of the animals used, and the total avoidance of severe surgery (3Rs perspective).

Upper Gastro-Intestinal Bleeding (UGIB) spans from minor bleeding to life-threatening events. Identification of early signs of shock, proper management of hemodynamically unstable patients, and correct risk stratification are essential for an appropriate diagnostic workup and therapy. This case reports a young man admitted to the emergency department with haematemesis. His medical history was unremarkable, without any risk factors for gastrointestinal bleeding. A few hours after admission, further episodes of haematemesis occurred, and the patient's condition rapidly deteriorated to irreversible shock. A contrast-enhanced computed tomography (CECT) revealed morphological features of chronic liver disease and oesophagal varices. The patient underwent upper gastrointestinal endoscopy, confirming oesophagal varices with massive bleeding. Although promptly applied, endoscopic hemostasis was ineffective, and the patient died twenty-four hours after admission. Based on this case, we reviewed the diagnostic and therapeutic approaches for patients with massive UGIB and provided a practical approach to this life-threatening emergency.

This article examines the involvement of the brain-derived neurotrophic factor (BDNF) in the control of nociception and pain. BDNF, a neurotrophin known for its essential role in neuronal survival and plasticity, has garnered significant attention for its potential implications as a modulator of synaptic transmission. This comprehensive review aims to provide insights into the multifaceted interactions between BDNF and pain pathways, encompassing both physiological and pathological pain conditions. I delve into the molecular mechanisms underlying BDNF’s involvement in pain processing and discuss potential therapeutic applications of BDNF and its mimetics in managing pain. Furthermore, I highlight recent advancements and challenges in translating BDNF-related research into clinical practice.

Abstract Equine protozoal myeloencephalitis (EPM) is a neurological disease caused by Sarcocystis neurona. Immunofluorescence antibody tests (IFATs) have been widely used to identify exposure of horses to S. neurona in Brazil. Here we used IFAT to search for IgG antibodies against Sarcocystis falcatula-like (Dal-CG23) and S. neurona (SN138) in sera from 342 horses sampled in Campo Grande, Mato Grosso do Sul state (Midwestern), and São Paulo, São Paulo state (Southeastern), Brazil. The 1:25 cutoff value was chosen to maximize sensitivity of the test. IgG antibodies against S. neurona were detected in 239 horses (69.88%), whereas IgG antibodies against S. falcatula-like were detected in 177 horses (51.75%). Sera from 132 horses (38.59%) reacted against both isolates. Absence of reactivity was evidenced in 58/342 horses (16.95%). The lower cutoff used, and the presence of opossums infected with S. falcatula-like and Sarcocystis spp. in the regions where the horses were sampled, might justify the high seroprevalence observed here. Owing to the similarity among antigens targeted in immunoassays, reports on S. neurona-seropositive horses in Brazil may also derive from the exposure of horses to other Sarcocystis species. The role of other Sarcocystis species in causing neurological diseases in horses in Brazil remains unclear.

This study examined social determinants associated with Korean American immigrant women's mammography use in Korea after immigration to the United States. Data from a cross-sectional survey were obtained from 187 women in Los Angeles County, California. More than one-quarter (28.3%) of the respondents reported returning to Korea for a mammogram after immigrating to the United States. Multivariable logistic regression revealed that compared to those who had their first mammogram in Korea, Korean American immigrant women who had their first mammogram in the United States were less likely to return to Korea for subsequent screenings (AOR = 0.02, 95% CI: <0.001, 0.05); also, those who had employer-based health insurance in the United States were less likely to get a mammogram in Korea after immigration (AOR = 0.01, 95% CI: <0.01, 0.18). Findings suggest that women familiar with the Korean healthcare system and who are uninsured or have inconsistent healthcare coverage in the United States may seek care in Korea. To promote adherence to breast cancer screening guidelines among Korean American immigrant women residing in the United States, greater access to free or low-cost screening services and breast cancer screening education is warranted to reduce the risk of later stage breast cancer detection resulting from medical tourism. [ABSTRACT FROM AUTHOR]

Alzheimer's disease (AD) is a neurodegenerative pathology covering about 70% of all cases of dementia. It is associated with neuroinflammation and neuronal cell death, which are involved in disease progression. There is a lack of effective therapies, and halting this process represents a therapeutic challenge. Data in the literature suggest several neuroprotective effects of low-frequency, low-energy pulsed electromagnetic fields (PEMFs) on biological systems, and clinical studies report that PEMF stimulation is safe and well tolerated. The aim of this work is to investigate the effects of PEMF exposure on oxidative stress and cell death in in vitro-injured cellular models of neurons and microglia. SH-SY5Y cells were stimulated by hydrogen peroxide (H2O2) or amyloid-β (Aβ) peptide, and N9 microglial cells were activated with lipopolysaccharide (LPS) or Aβ peptide. Reactive oxygen production, mitochondrial integrity, and cell death modulation were investigated through 2′,7′-dichlorodihydrofluorescein diacetate (H2DCFDA) and 5,5′,6,6′-tetrachloro-1,1′,3,3′-tetraethylbenzimidazolocarbo-cyanine iodide (JC-1) biochemical assays, fluorescence, and MTS experiments. Cells were exposed to PEMFs producing a pulsed signal with the following parameters: pulse duration of 1.3 ms and frequency of 75 Hz. The outcomes demonstrated that PEMFs defended SH-SY5Y cells against Aβ peptide- or H2O2-induced oxidative stress, mitochondrial damage, and cell death. Furthermore, in microglia activated by LPS or Aβ peptide, they reverted the reduction in mitochondrial potential, oxidative damage, and cell death. Overall, these findings imply that PEMFs influence the redox state of the cells by significantly boosting antioxidant levels in both injured microglia and neuronal in vitro cells mimicking in vitro AD. [ABSTRACT FROM AUTHOR]

Cancer stem cells (CSCs) are the main drivers of disease progression and chemotherapy resistance in breast cancer. Tumor progression and chemoresistance might then be prevented by CSC-targeted therapies. We previously demonstrated that Toll-like Receptor (TLR)2 is overexpressed in CSCs and fuels their self-renewal. Here, we show that high TLR2 expression is linked to poor prognosis in breast cancer patients, therefore representing a candidate target for breast cancer treatment. By using a novel mammary cancer-prone TLR2KO mouse model, we demonstrate that TLR2 is required for CSC pool maintenance and for regulatory T cell induction. Accordingly, cancer-prone TLR2KO mice display delayed tumor onset and increased survival. Transplantation of TLR2WT and TLR2KO cancer cells in either TLR2WT or TLR2KO hosts shows that tumor initiation is mostly sustained by TLR2 expression in cancer cells. TLR2 host deficiency partially impairs cancer cell growth, implying a pro-tumorigenic effect of TLR2 expression in immune cells. Finally, we demonstrate that doxorubicin-induced release of HMGB1 activates TLR2 signaling in cancer cells, leading to a chemotherapy-resistant phenotype. Unprecedented use of TLR2 inhibitors in vivo reduces tumor growth and potentiates doxorubicin efficacy with no negative impact on the host immune system, opening new perspectives for the treatment of breast cancer patients.

Background: Reelin has fundamental functions in the developing and mature brain. Its absence gives rise to the Reeler phenotype in mice, the first described cerebellar mutation. In homozygous mutants missing the Reelin gene ( reln -/-), neurons are incapable of correctly positioning themselves in layered brain areas such as the cerebral and cerebellar cortices. We here demonstrate that by employing ex vivo cultured cerebellar slices one can reduce the number of animals and use a non-recovery procedure to analyze the effects of Reelin on the migration of Purkinje neurons (PNs). Methods: We generated mouse hybrids (L7-GFP relnF1/) with green fluorescent protein (GFP)-tagged PNs, directly visible under fluorescence microscopy. We then cultured the slices obtained from mice with different reln genotypes and demonstrated that when the slices from reln -/- mutants were co-cultured with those from reln +/- mice, the Reelin produced by the latter induced migration of the PNs to partially rescue the normal layered cortical histology. We have confirmed this observation with Voronoi tessellation to analyze PN dispersion. Results: In images of the co-cultured slices from reln -/- mice, Voronoi polygons were larger than in single-cultured slices of the same genetic background but smaller than those generated from slices of reln +/- animals. The mean roundness factor, area disorder, and roundness factor homogeneity were different when slices from reln -/- mice were cultivated singularly or co-cultivated, supporting mathematically the transition from the clustered organization of the PNs in the absence of Reelin to a layered structure when the protein is supplied ex vivo. Conclusions: Neurobiologists are the primary target users of this 3Rs approach. They should adopt it for the possibility to study and manipulate ex vivo the activity of a brain-secreted or genetically engineered protein (scientific perspective), the potential reduction (up to 20%) of the animals used, and the total avoidance of severe surgery (3Rs perspective).

The blood–brain barrier (BBB) is a biological barrier that protects the central nervous system (CNS) by ensuring an appropriate microenvironment. Brain microvascular endothelial cells (ECs) control the passage of molecules from blood to brain tissue and regulate their concentration-versus-time profiles to guarantee proper neuronal activity, angiogenesis and neurogenesis, as well as to prevent the entry of immune cells into the brain. However, the BBB also restricts the penetration of drugs, thus presenting a challenge in the development of therapeutics for CNS diseases. On the other hand, adenosine, an endogenous purine-based nucleoside that is expressed in most body tissues, regulates different body functions by acting through its G-protein-coupled receptors (A1, A2A, A2B and A3). Adenosine receptors (ARs) are thus considered potential drug targets for treating different metabolic, inflammatory and neurological diseases. In the CNS, A1 and A2A are expressed by astrocytes, oligodendrocytes, neurons, immune cells and ECs. Moreover, adenosine, by acting locally through its receptors A1 and/or A2A, may modulate BBB permeability, and this effect is potentiated when both receptors are simultaneously activated. This review showcases in vivo and in vitro evidence supporting AR signaling as a candidate for modifying endothelial barrier permeability in the treatment of CNS disorders.

Adenosine receptors (ARs) are widely acknowledged pharmacological targets yet are still underutilized in clinical practice. Their ubiquitous distribution in almost all cells and tissues of the body makes them, on the one hand, excellent candidates for numerous diseases, and on the other hand, intrinsically challenging to exploit selectively and in a site-specific manner. This review endeavors to comprehensively depict the substantial advancements witnessed in recent years concerning the development of drugs that modulate ARs. Through preclinical and clinical research, it has become evident that the modulation of ARs holds promise for the treatment of numerous diseases, including central nervous system disorders, cardiovascular and metabolic conditions, inflammatory and autoimmune diseases, and cancer. The latest studies discussed herein shed light on novel mechanisms through which ARs exert control over pathophysiological states. They also introduce new ligands and innovative strategies for receptor activation, presenting compelling evidence of efficacy along with the implicated signaling pathways. Collectively, these emerging insights underscore a promising trajectory toward harnessing the therapeutic potential of these multifaceted targets.

This paper presents a study about the effect of unevenness on conventional airport pavements and unpaved runways. During landing and take-off operations, aircraft tires are at high levels of tension and possible surface roughness can contribute to aircraft damage, landing gear fatigue, as well as the loss of aircraft directional stability, thus increasing the chances of accidents or incidents. The National Civil Aviation Agency (ANAC), responsible for regulating and supervising civil aviation activities in Brazil, regulates the need to evaluate longitudinal irregularity through the International Roughness Index (IRI) parameter on paved runways. In addition to the IRI, the Boeing Bump Index (BBI) and Runway Roughness Index (RRI) are indices also recommended by the Federal Aviation Administration (FAA). Moreover, this study understands the concept of unpaved runways and how these indexes can be evaluated on unpaved runways, however, with minimum requirements. Therefore, the present study addresses these bearing quality indices whose purpose is to guarantee the safety of operations.

Introdução: A pandemia COVID-19 está sendo considerada uma das mais devastadoras e desafiadoras crises da saúde pública mundial, impactando na saúde mental e no bem-estar psicológico. Somado a isso, a sociedade impõe padrões exigentes com elevadas e desgastantes expectativas, tornando a universidade um ambiente estressor capaz de prejudicar não só a formação, mas também a qualidade de vida do estudante. Desta forma, a avaliação de fatores associados a alterações na saúde mental poderia contribuir para a promoção de medidas preventivas. Objetivo: Avaliar a prevalência de alterações na saúde mental (depressão, ansiedade e estresse) de estudantes universitários da área da saúde e fatores associados em tempos de pandemia COVID-19. Método: Foram avaliados 140 estudantes do curso de biomedicina de uma universidade do interior paulista. Para tanto, os participantes responderam a um instrumento com questões estruturadas, organizados em: caracterização da população de estudo; uso de tabaco e álcool (ASSIST) e avaliação da saúde mental (DASS-21). A associação das variáveis do estudo foi realizada através dos testes do qui-quadrado, Fisher ou qui-quadrado de continuidade. Para avaliar os fatores associados às alterações da saúde mental foi utilizada a razão de chances (odds ratio/OR). Foi considerando significativo p < 0,05. Este trabalho foi aprovado pelo CEP (13359019.3.0000.5515). Resultados: Dentre os estudantes universitários avaliados, 44,85% apresentaram sinais de depressão, enquanto 55,22% de ansiedade e 71,54% de estresse. A associação entre as caraterísticas da população e avaliação do DASS-21 demonstrou que o sexo feminino tinha uma chance 0,40 vezes (p = 0,0387) maior de apresentar sintomas de estresse; idade entre 18 e 20 anos uma chance 2,645 vezes (p = 0,0462) maior em relação à 21 a 24 ano e uma chance 5,429 vezes (p = 0,0035) maior em relação à maiores de 24 anos de apresentar sintomas de estresse; estar solteiro uma chance 4,966 vezes (p = 0,0111) maior de apresentar sintomas de ansiedade; usar tabaco uma chance 2,270 vezes (p = 0,0318) maior de apresentar sintomas de depressão e, uma chance 2,740 vezes (p = 0,0151) maior de ansiedade; usar álcool uma chance 3,504 vezes (p = 0,0265) maior de apresentar sintomas de depressão, uma chance 4,013 vezes (p = 0,0088) maior de ansiedade e, uma chance 5,005 vezes (p = 0,0012) maior de estresse. Conclusão: Estudantes universitários apresentam uma elevada prevalência de alterações da saúde mental, associadas principalmente à pouca idade e ao uso de tabaco e álcool.

Introdução: A doença de Chagas é uma enfermidade tropical de extrema relevância, visto que apresenta alto índice de infectados e possui grande impacto socioeconômico. Entretanto, as drogas disponíveis possuem diversas restrições quanto à efetividade, dessa forma, é crucial a busca por novos medicamentos. Os ramnolipídeos têm chamado atenção como agente antimicrobiano, pois provocam alteração da permeabilidade da membrana de microrganismos, destruindo-os ou potencializando o efeito de outras drogas. Objetivo: O objetivo do presente estudo foi avaliar a ação do ramnolipídeo sobre cultura axênica de cepa Y de Trypanosoma cruzi. Método: Com este intuito, 105 epimastigotas/mL foram incubadas a 25°C em meio LIT (Liver Infusion Tryptose) e expostas ao ramnolipídeo na concentração de 0,5% durante 24 horas. Culturas não tratadas e tratadas com violeta genciana nas concentrações de 12,5µg/mL e 125µg/mL foram utilizadas em todos os ensaios como controle negativo e positivo, respectivamente. Após o período de incubação, as culturas foram avaliadas quanto ao crescimento, sendo este parâmetro observado em contagem em câmara de Neubauer. Os resultados foram expressos como a quantidade média de epimastigotas que cresceram após o período de incubação, sendo as culturas experimentais comparadas às culturas controle. Resultados: Observou-se que a cultura tratada com ramnolipídeo apresentou inibição significativa de crescimento em comparação ao cultivo não tratado, não sendo encontradas células viáveis à observação em microscópio óptico, além de serem observadas alterações na morfologia, como arredondamento, perda de flagelo e motilidade. As culturas tratadas com violeta genciana a 125µg/mL não apresentaram células viáveis e a tratada com o corante a 12,5µg/mL mostrou poucas células viáveis com alterações morfológicas, sendo as formas lentas e arredondadas. Conclusão: Os resultados obtidos demonstram que o ramnolipídeo apresentou atividade sobre cultura de T. cruzi, promovendo inibição do seu crescimento. Por ser uma substância anfipática, o ramnolipídeo deve ter alterado a permeabilidade da membrana celular das epimastigotas, visto que foram observadas células túrgidas após a exposição ao biossufactante.

Introdução: A tuberculose (TB) é uma doença que atinge um quarto da população mundial e, os profissionais da área da saúde são considerados como uma população de risco para a doença. Desta forma, verificar as informações de estudantes universitários da área da saúde sobre a TB poderia colaborar com ações para a sua prevenção. Objetivo: Avaliar o conhecimento, atitudes e práticas sobre a TB de estudantes de biomedicina de uma universidade do interior paulista. Método: Foram entrevistados 140 estudantes do curso de biomedicina de uma universidade do interior paulista, através de um questionário semiestruturado, composto por questões fechadas e organizado em quatro blocos relacionados à TB: Conhecimento; Atitudes e comportamentos; Atitudes e estigma; Consciência e informação. Foi realizada uma análise descritiva e de frequência dos resultados. O trabalho foi aprovado pelo CEP (13359019.3.0000.5515). Resultados: 42,88% consideram a TB como grave e 53,57% muito grave. Sintomas indicados: 72,14% falta de ar, 60,71% cansaço, 60% tosse com sangue, 57,14% tosse seca, 55,71% dor no peito, 55,71% tosse mais de duas semanas e 55,71% febre. 96,42% indicaram que “se pega” através do ar e 97,88% que qualquer pessoa poderia “pegar”. Como prevenção, 89,28% indicaram cobrir a boca e o nariz quando espirrar ou tossir. 7,14% indicaram não haver cura e 20,71% que não sabiam. Com relação ao tratamento, 2,88% não sabiam, 5,73% erraram e 33,71% não sabiam o seu valor. Com relação às atitudes e práticas, 67,86% indicam medo se tivesse TB, 35,71% desespero e 32,14% surpresa. 75,71% indicaram que procuraria ajuda no momento que os sinais e sintomas relacionados à tuberculose estivessem presentes. Com relação às atitudes e estigmas, somente 17,14% conheciam alguém com TB. 64,28% seriam solidários e desejariam ajudar o paciente; 18,57% solidário, mas prefere ficar longe dessas pessoas; 16,43% teriam medo, pois poderiam se infectar. Quando questionados como um paciente seria considerado por outros, indicaram que: 42,14% das pessoas na maior parte ajudam e 40,71% das pessoas são amigáveis, mas geralmente tentam evitá-lo. 92,86% consideram o HIV como fator de risco. 75% não se sentem bem-informados, apesar de 77,85% dos participantes terem recebido informações sobre TB. Conclusão: Nossos resultados demonstraram de forma geral que os estudantes apresentam bom conhecimento sobre diversos aspectos da tuberculose, entretanto, ainda existem pontos falhos, indicando a necessidade de estratégias para melhor divulgar as informações sobre a doença.