Search

IntroductionHypoxia has a teratogenic effect on the fish during embryonic development. Nevertheless, the effects on the larval stage are not yet known. Therefore, the aim of this study was to assess the effects of hypoxia on the number of neurons and their apoptotic rate in the spinal cord of Salmo salar alevins after hatching.MethodsWe used a total of 400 alevins, establishing both hypoxia and control (normoxia) groups (n = 8), considering post-hatching days 1, 3, 5, and 7, each with 50 individuals. Transversal sections of 50 μm thickness were cut from the alevin body. We performed cresyl-violet staining and counted the spinal cord neurons. Also, immunohistochemistry for HIF-1α and caspase-3 were used. For statistical analysis ANOVA one-way and Tukey's Test were used.ResultsHIF-1α was expressed in spinal neurons in both the hypoxic and normoxic groups, with the former being significantly higher. Both the hypoxic and normoxic groups evidenced the process of neuronal apoptosis, with the hypoxic groups demonstrating a higher significance. The number of neurons in the spinal cord was significantly lower in the hypoxic group.DiscussionWe found that when oxygen levels in the aquatic environment were low in Salmo salar farming alevins post-hatch, the number of spinal neurons dropped by half. These results contribute to increasing our knowledge of the biological development of salmon, in particular the genesis of the spinal cord, and the effects of hypoxic conditions on the development of this structure of the nervous system.

Background: Sternal pain after cardiac surgery results in considerable discomfort. Single-injection parasternal fascial plane blocks have been shown to reduce pain scores and opioid consumption during the first 24 h after surgery, but the efficacy of continuous infusion has not been evaluated. This retrospective cohort study examined the effect of a continuous infusion of local anaesthetic through parasternal catheters on the integrated Pain Intensity and Opioid Consumption (PIOC) score up to 72 h. Methods: We performed a retrospective analysis of patients undergoing cardiac surgery with median sternotomy at a single academic centre before and after the addition of parasternal nerve catheters to a standard multimodal analgesic protocol. Outcomes included PIOC score, total opioid consumption in oral morphine equivalents, and time-weighted area under the curve pain scores up to 72 h after surgery. Results: Continuous infusion of ropivacaine 0.1% through parasternal catheters resulted in a significant reduction in PIOC scores at 24 h (−62, 95% confidence interval −108 to −16; P

La educación es esencial para la vida, por lo cual el ser humano, puede lograr a través de ésta, su desarrollo integral, de allí que, teniendo en cuenta esta premisa, este estudio analiza los procesos educativos como catalizadores del desarrollo psicosocial del ser humano. Se abordó una metodología cualitativa, incluyendo entrevistas a cuatro profesionales de la educación a nivel universitario, quienes aportaron sus planteamientos al respecto de la temática, tomando en cuenta la descripción e interpretación de experiencias vividas. Luego de un análisis hermenéutico, los hallazgos indican que los procesos educativos en la universidad pueden influir significativamente en el desarrollo psicosocial de los estudiantes en áreas como la identidad, las relaciones interpersonales, el desarrollo cognitivo y moral, el bienestar emocional, y el desarrollo vocacional y laboral. Las dinámicas en el aula y los métodos de enseñanza pueden impactar en la autonomía, el pensamiento crítico, la autoestima, el trabajo en equipo y las habilidades sociales de los estudiantes. Por lo tanto, se concluye que es necesario implementar metodologías de enseñanza y ambientes educativos que fomenten el trabajo colaborativo, la libre expresión de ideas y la participación de los estudiantes en entornos democráticos, para potenciar su autonomía y competencias sociales.

Objetivos: Bolivia enfrenta serios problemas en la prevención secundaria del cáncer cervicouterino. Este estudio tiene por objetivo evaluar la eficacia y concordancia de los métodos de diagnóstico en la prevención secundaria del cáncer de cuello uterino para detectar lesiones cervicales intraepiteliales de alto grado. Métodos: Sesenta y dos pacientes con una citología alterada o una prueba VPH-ar positiva complementada obligatoriamente con una citología, fueron sometidas a una colposcopia y biopsia dirigida. Aquellas pacientes con diagnósticos histopatológicos de NIC2+ en la biopsia colposcópica recibieron el tratamiento escisional correspondiente, obteniéndose muestras de tejido para su análisis histopatológico (biopsias escisionales). Los resultados de la citología e impresión colposcópica fueron comparados con los resultados histopatológicos de la biopsia colposcópica. Finalmente, los resultados histopatológicos de NIC2+ de la biopsia colposcópica fueron comparados con los resultados de la biopsia escisional. Resultados: La sensibilidad de la citología y la impresión colposcopia para detectar NIC 2+ fue de 31,43% y 80% respectivamente. La concordancia (Índice Kappa) de los resultados de la citología y la impresión colposcópica comparadas con los resultados NIC 2+ de la biopsia colposcópica fue 0,15 (leve) y 0,43 (moderado) respectivamente. Finalmente, la comparación entre los resultados histopatológicos de la biopsia colposcópica (NIC2+) y de la biopsia escisional dio una coincidencia del 68%. Conclusiones: De las pruebas evaluadas, la citología resulto ser la que tuvo menor eficacia y concordancia para detectar NIC 2+. La colposcopia mejora la identificación de lesiones subyacentes NIC 2+ en pacientes con citologías iguales o menores a LIE-BG.

ABSTRACT: Objectives: Antimicrobial resistant (AMR) Campylobacter is a global health threat; however, there is limited information on genomic determinants of resistance in low- and middle-income countries. We evaluated genomic determinants of AMR using a collection of whole genome sequenced Campylobacter jejuni and C. coli isolates from Iquitos, Peru. Methods: Campylobacter isolates from two paediatric cohort studies enriched with isolates that demonstrated resistance to ciprofloxacin and azithromycin were sequenced and mined for AMR determinants. Results: The gyrA mutation leading to the Thr86Ile amino acid change was the only gyrA mutation associated with fluoroquinolone resistance identified. The A2075G mutation in 23S rRNA was present, but three other 23S rRNA mutations previously associated with macrolide resistance were not identified. A resistant-enhancing variant of the cmeABC efflux pump genotype (RE-cmeABC) was identified in 36.1% (35/97) of C. jejuni genomes and 17.9% (12/67) of C. coli genomes. Mutations identified in the CmeR-binding site, an inverted repeat sequence in the cmeABC promoter region that increases expression of the operon, were identified in 24/97 C. jejuni and 14/67 C. coli genomes. The presence of these variants, in addition to RE-cmeABC, was noted in 18 of the 24 C. jejuni and 9 of the 14 C. coli genomes. Conclusions: Both RE-cmeABC and mutations in the CmeR-binding site were strongly associated with the MDR phenotype in C. jejuni and C. coli. This is the first report of RE-cmeABC in Peru and suggests it is a major driver of resistance to the principal therapies used to treat human campylobacteriosis in this setting.

In today’s digitized world, digital competences are required to facilitate the transition to the Internet. For professorship, these competences go beyond knowledge of a particular subject. They focus on the skills needed to transmit that knowledge to students. A quantitative approach study was applied. The design was non-experimental and descriptive. The population and sample correspond to the 70 teachers who worked in the Faculty of Humanistic and Social Sciences during the first semester of 2023. The instrument for data collection was a teaching self-assessment. The competencies in digital citizenship showed the highest levels of teacher mastery with a value of 5. The competencies in pedagogy and professional development showed a value of 4. 93% of UTM-CHS teachers stated they had participated in training activities on the use of ICT in education. In conclusion, university faculty in Ecuador must have a stronger digital academic background; they must establish better pedagogical and professional development skills, research capacity, knowledge of educational technologies, intercultural skills and leadership skills. To ensure a high-quality learning environment all three areas must be at the same level of outcomes. For that, university professional development leads to establishing good pedagogy. Then pedagogy is strengthened through digital citizenship.

Rotavirus alphagastroenteritidis is the major causative agent of acute gastroenteritis in both children under the age of 5 and young mammals and birds globally. RVAs are non-enveloped viruses with a genome comprising 11 double-stranded RNA segments. In 2008, the Rotavirus Classification Working Group pioneered a comprehensive and complete RVA genome classification system, establishing a specific threshold, which measures the genetic distances between homologous genes. The aim of this study was to perform an updated systematic analysis of the genetic variability across all RVA genes. Our investigation involved assessing the established cutoff values for each RVA genome segment and determining the need for any updates. To achieve this objective, multiple sequence alignments were constructed for all 11 genes and one for each genotype with discrepancies. Also, pairwise distances along with their cutoff values were evaluated. The analyses provided insights into the current relevance of cutoff values, which remain applicable for the majority of genotypes. In conclusion, this study fortifies the current classification system by highlighting its robustness and accurate genotyping of Rotavirus alphagastroenteritidis.

Background The improper management of hazardous solid waste in dental care offices poses significant risks to public health and the environment. Dental offices generate hazardous waste, including biological and chemical contaminants, which can lead to infections, pollution, and harm if not managed properly. Effective waste management practices are crucial, yet compliance varies significantly across regions, especially in Latin America, due to limited resources, inadequate training, and insufficient infrastructure. This study compares hazardous waste management practices in dental offices in Talara, Peru, and Machala, Ecuador, to provide actionable recommendations for improvement. Policy and Implications In Peru, hazardous waste management involves critical steps such as conditioning, segregation, transport, storage, treatment, and disposal. Compliance minimizes exposure risks and environmental contamination. Ecuador emphasizes administrative and operational aspects, including policies, records, training, and procedures. Improving practices in both countries can model enhanced waste management across Latin America. Recommendations To address challenges in Talara and similar Latin American cities, it is essential to strengthen administrative systems, increase budget allocations for waste management, and develop comprehensive training programs. Waste management should be prioritized within public policy agendas with clear guidelines and accountability measures. Both cities need improved resource allocation, modern waste treatment facilities, and centralized storage solutions. Continuous education and certification programs are crucial. Implementing integrated policies, regular reviews, and robust compliance mechanisms based on Machala’s practices can benefit other regions. Public awareness campaigns and regional collaboration through workshops and research initiatives are also recommended. Conclusions Significant disparities in hazardous waste management exist between Talara and Machala. Talara requires strengthened systems and improved infrastructure, while Machala’s practices serve as a model. Tailored interventions can enhance public health and environmental outcomes across Latin America. Regular monitoring, evaluation, and collaboration are essential for sustained improvements.

Water contamination with pesticides is one of the major pollution problems in northwestern Mexico, and this is due to the extensive use of pesticides in agriculture. In this research, water samples of ten sampling sites (fishing grounds, beaches, and both) were analyzed in the search for 28 pesticides (organochlorines, organophosphates, pyrethroids, carbamates, among other chemical classes), supplemented with a calculation of the resulting potential environmental risk. Pesticides were separated from the matrix by liquid-liquid extraction and quantified by gas chromatography coupled to electron micro-capture (organohalogenated) and pulsed flame photometric detectors (organophosphates). In addition, the ecotoxicological risk of pesticides in algae, invertebrates, and fish was assessed, based on seawater pesticide concentrations using the Risk Quotient (RQ) and Toxic Units (TU) approach. The results showed 18 pesticides identified in the analyzed samples, where cypermethrin and chlorpyrifos were identified with the maximum concentrations of 1.223 and 0.994 μg L-1, respectively. In addition, these two pesticides have been associated with acute toxic effects on algae, invertebrates, and fish. It is important to pay particular attention to the search for long-term alternatives to the use of chlorpyrifos and cypermethrin due to their high detection rates and the risks associated with their toxic properties. However, the adoption of alternative measures to synthetic pesticide control should be a priority, moving towards sustainable practices such as the use of biopesticides, crop rotation and polycultures.

ABSTRACT The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classifications. In this context, the Brazilian megadiverse fauna is no exception, and the Catálogo Taxonômico da Fauna do Brasil (CTFB) (http://fauna.jbrj.gov.br/), made public in 2015, represents a database on biodiversity anchored on a list of valid and expertly recognized scientific names of animals in Brazil. The CTFB is updated in near real time by a team of more than 800 specialists. By January 1, 2024, the CTFB compiled 133,691 nominal species, with 125,138 that were considered valid. Most of the valid species were arthropods (82.3%, with more than 102,000 species) and chordates (7.69%, with over 11,000 species). These taxa were followed by a cluster composed of Mollusca (3,567 species), Platyhelminthes (2,292 species), Annelida (1,833 species), and Nematoda (1,447 species). All remaining groups had less than 1,000 species reported in Brazil, with Cnidaria (831 species), Porifera (628 species), Rotifera (606 species), and Bryozoa (520 species) representing those with more than 500 species. Analysis of the CTFB database can facilitate and direct efforts towards the discovery of new species in Brazil, but it is also fundamental in providing the best available list of valid nominal species to users, including those in science, health, conservation efforts, and any initiative involving animals. The importance of the CTFB is evidenced by the elevated number of citations in the scientific literature in diverse areas of biology, law, anthropology, education, forensic science, and veterinary science, among others.

ObjectiveTo determine how cognitive domains mediate the link between fitness components, their global score (GFS), and adolescents’ academic achievement (ACA) across various school subjects.MethodsIn this study, 1,296 adolescents aged 10–14 participated. GFS was computed by three fitness components (strength, muscular, and cardiorespiratory fitness) through the ALPHA-fitness test battery. ACA was determined by five school subjects (Language, English, Mathematics, Science, and History) and two academic scores (a) “Academic Average” (five subjects) and (b) “Academic-PISA” (Language, Mathematics, and Science). A principal component analysis was performed to establish four factors (working memory [WM], cognitive flexibility [CF], inhibitory control [IC], and fluid reasoning [FR]). A parallel mediation approach was implemented with 5,000 bootstrapped samples controlled for sex, maturity, central obesity, having breakfast before cognitive tasks, schools, and school vulnerability. Total, direct, indirect effects, and mediation percentages were estimated.ResultsOverall, the finding showed a full parallel mediation effect for Language (92.5%) and English (53.9%), while a partial mediation for Mathematics (43.0%), Science (43.8%), History (45.9%), “Academic Average” (50.6%), and “Academic-PISA” (51.5%). In particular, WM, IC, and FR mediated all school subjects except mathematics, where IC was not significant. CF has not mediated any relationship between GF and academic performance.ConclusionThis study underscores the pivotal role of cognitive domains, specifically WM, IC, and FR, in mediating the link between physical fitness and academic performance in adolescents. These insights have relevant implications for educational and public health policies.

O presente trabalho apresenta os resultados de uma dissertação de mestrado que investigou o impacto de um poluente nas dinâmicas populacionais de espécies que interagem entre si em um mesmo ambiente. É apresentado um sistema de Equações Diferenciais Parciais de Dispersão-Migração, que foi discretizado espacialmente através do Método de Galerkin via Elementos Finitos e temporalmente através do Método de Crank-Nicolson. São aqui apresentadas as equações não-lineares do sistema empregado na modelagem e suas formulações variacionais. Também é apresentado o sistema não linear discreto resultante, com o qual foram realizadas as simulações numéricas. Este estudo contribui significativamente para a compreensão dos impactos da presença de materiais poluentes advindos de ações antropogênicas em um determinado ambiente, principalmente no que tange aos seus efeitos nas densidades populacionais de espécies coexistentes.

IntroductionHypoxia is a recurring problem in the fish farming industry. Currently, it is known that the exposure of fish and fry to a hypoxic environment induces important changes in their metabolism, compromising not only their development but also their reproduction and mortality rates. Our hypothesis is that hypoxia constitutes one of the etiological factors causing deformation of the body and caudal fin in this species, as well as affecting its growth.MethodsWe analyzed two hundred forty Salmo salar salmon fry, differentially cultured at 100% saturation (normoxia condition) and 60% (hypoxia condition) for 2, 4, 6, and 8 days, including a group under continuous hypoxia. We performed diaphanization and Alcian blue staining, along with standard histological techniques. The polyclonal anti-HIF-1a antibody was used as a marker of hypoxia in Salmo salar, and hypoxia in these fish was associated with the immunopositivity of this antibody.Results and discussionThe results indicate that there is an association between exposure to hypoxia and the deformation of the body and fin, as well as an agreement between hypoxia and the total length of the fry and fin. Several months after the event occurred, we were able to find and describe angiogenesis, blood vessel disorganization, and vasodilation histologically. Finally, hypoxic cells in the fry (HIF-1a) could be recognized and confirmed as hypoxia sensors. All of this indicates that hypoxia not only affects the fry during the development phase of the event, but that its results can be evident much later and affect the fry throughout their entire ontogeny.

La historia se nos presenta en la bifurcación de conocimiento y realidad. No obstante, la forma más adecuada para conocer un fenómeno trascendental dentro de una sociedad particular es mediante la historiografía, en tanto máxima expresión del conocimiento histórico-científico; el problema viene dado por el hecho de que la historiografía no es, en ningún caso conocido, un conocimiento totalmente objetivo y neutral, sino que, por el contrario, siempre está condicionado por los sesgos, gustos, intereses, ideologías y posicionamiento político del historiador, como sujeto condicionado por la carga del tiempo y espacio en el que le toca vivir. En este sentido, el objetivo de la investigación fue describir las principales narrativas que se han producido en Ecuador sobre la revolución liberal sucedida en las postrimerías del siglo XIX, narrativas que adquieren significados divergentes y, definitivamente, son susceptibles a lecturas alternativas de los acontecimientos. Metodológicamente la investigación fue posible gracias a la técnica del balance historiográfico, que permite determinar hermenéuticamente que se ha escrito sobre un tema y como se ha escrito, es decir, desde que perspectivas. Se concluye que, en términos de discursividad, la Revolución Liberal dejó un impacto simbólico duradero en Ecuador, moldeando su paisaje político y sus normas sociales.

Abstract We present notable distributional updates for 14 species from western Ecuador (seven amphibians and seven reptiles). Our findings include the northernmost confirmed sighting of Pristimantis kuri and the southernmost documented record of Imantodes inornatus and Lepidoblepharis buchwaldi. Additionally, we document new records and notes on the distribution range of Agalychnis spurrelli, Hyloscirtus alytolylax, Engystomops montubio, Pristimantis muricatus, Pristimantis nyctophylax, Pristimantis walkeri, Chironius flavopictus, Chironius grandisquamis, Dendrophidion graciliverpa, Ninia schmidti, and Urotheca fulviceps. These observations significantly contribute to filling information gaps in our understanding of these species' distributions. The data, derived from samples collected across diverse forested areas in the western region of Ecuador (provinces of Bolívar, Cañar, Guayas, El Oro, and Los Ríos), provide valuable insights into the ecology and conservation of these species.

Trusting and supportive relationships with school counsellors can help first-generation college students access college despite barriers. In this narrative inquiry, 11 first-generation college students in the United States shared stories of their positive relationships with their former high school counsellors. After an iterative and consensus-based data analysis process, we summarised our participants' grand narrative with five themes: family context, school counselling delivery, relationships with school counsellors, impact of relationships with school counsellors, and suggested improvements. Participants valued how school counsellors helped them advocate for themselves, build their confidence, and feel encouraged and accountable through individual meetings, career counselling, and college guidance. School counsellors can offer targeted and relational interventions to help first-generation college students access and persist through college.

Background: Presently, there exists a growing interest in mitigating the utilization of antibiotics in response to the challenges emanating from their usage in livestock. A viable alternative strategy encompasses the introduction of live microorganisms recognized as probiotics, exerting advantageous impacts on the immune system and nutritional aspects of the host animals. Native lactic acid bacteria, inherently possessing specific properties and adaptive capabilities tailored to each animal, are deemed optimal contenders for probiotic advancement. Aim: In the current investigation, microorganisms exhibiting probiotic potential were isolated, characterized, and identified from the fecal samples of guinea pigs (Cavia porcellus) belonging to the Peruvian breed. Methods: The lactic acid bacteria isolated on MRS agar underwent Gram staining, catalase testing, proteolytic, amylolytic, and cellulolytic activity assays, low pH tolerance assessment, hemolytic evaluation, antagonism against Salmonella sp., determination of autoaggregation and coaggregation capacity, and genotypic characterization through sequencing of the 16S rRNA gene. Results: A total of 33 lactic acid bacteria were isolated from the feces of 30 guinea pigs, with 10 selected based on Gram staining and catalase testing. All strains exhibited proteolytic activity, although only one demonstrated amylolytic capability, while none displayed cellulase activity. These bacteria demonstrated higher tolerance to pH 5.0 and, to a lesser extent, to pH 4.0. Furthermore, they exhibited antagonistic activity against Salmonella sp. Only 2 bacteria demonstrated hemolytic activity, and they were subsequently excluded from further evaluations. Subsequent assessments revealed autoaggregation capacities ranging from 4.55% to 23.19%, with a lesser degree of coaggregation with Salmonella sp. ranging from 3.53% to 8.94% for the remaining 8 bacterial isolates. Based on these comprehensive tests, 5 bacteria with notable probiotic potential were identified through molecular assays, belonging to the groups Leuconostoc citreum, Enterococcus gallinarum, Exiguobacterium sp., and Lactococcus lactis. Conclusion: The identified bacteria stand out as promising probiotic candidates, deserving further assessment in Peruvian breed guinea pigs. This exploration aims to enhance production outcomes while mitigating the adverse effects induced by pathogenic microorganisms. [Open Vet J 2024; 14(2.000): 716-729]

Abstract Background Lung neuroendocrine neoplasms (LungNENs) comprise a heterogeneous group of tumors ranging from indolent lesions with good prognosis to highly aggressive cancers. Carcinoids are the rarest LungNENs, display low to intermediate malignancy and may be surgically managed, but show resistance to radiotherapy/chemotherapy in case of metastasis. Molecular profiling is providing new information to understand lung carcinoids, but its clinical value is still limited. Altered alternative splicing is emerging as a novel cancer hallmark unveiling a highly informative layer. Methods We primarily examined the status of the splicing machinery in lung carcinoids, by assessing the expression profile of the core spliceosome components and selected splicing factors in a cohort of 25 carcinoids using a microfluidic array. Results were validated in an external set of 51 samples. Dysregulation of splicing variants was further explored in silico in a separate set of 18 atypical carcinoids. Selected altered factors were tested by immunohistochemistry, their associations with clinical features were assessed and their putative functional roles were evaluated in vitro in two lung carcinoid-derived cell lines. Results The expression profile of the splicing machinery was profoundly dysregulated. Clustering and classification analyses highlighted five splicing factors: NOVA1, SRSF1, SRSF10, SRSF9 and PRPF8. Anatomopathological analysis showed protein differences in the presence of NOVA1, PRPF8 and SRSF10 in tumor versus non-tumor tissue. Expression levels of each of these factors were differentially related to distinct number and profiles of splicing events, and were associated to both common and disparate functional pathways. Accordingly, modulating the expression of NOVA1, PRPF8 and SRSF10 in vitro predictably influenced cell proliferation and colony formation, supporting their functional relevance and potential as actionable targets. Conclusions These results provide primary evidence for dysregulation of the splicing machinery in lung carcinoids and suggest a plausible functional role and therapeutic targetability of NOVA1, PRPF8 and SRSF10.

La Sociedad Chilena de Medicina Física y Rehabilitación funciona hace más de 50 años y esta especialidad se ha consolidado en el país de forma gradual. Así, el modelo de rehabilitación en Chile ha cambiado desde uno centrado en hospitales hacia una red de instituciones de rehabilitación basada en la comunidad, y el actuar de los médicos fisiatras en el país va desde la atención primaria hasta la atención en unidades de paciente crítico. En la actualidad hay 334 médicos fisiatras acreditados con la especialidad en el país y se ha registrado un aumento de uno a cinco programas de formación en esta especialidad en los últimos diez años, esto en respuesta a la creciente demanda de servicios de rehabilitación y, en consecuencia, de profesionales en el área. El desarrollo en investigación en el área de medicina física y rehabilitación es aún discreto y su producción es predominantemente en revistas nacionales. Además, la contingencia sanitaria mundial por el COVID-19 exigió una adaptación del rol de los médicos fisiatras, por lo que hoy en día sus principales retos son profundizar en el desarrollo sanitario de las personas con discapacidad y respaldar políticas y estrategias locales e internacionales de rehabilitación.

Infections pose a risk for patients undergoing hematopoietic stem cell (HSC) transplants due to their immunosuppression, making them susceptible to opportunistic infections. Therefore, understanding the composition of the aerobiome in this area is vital. The aim of this study was to characterize the aerobiome in an HSC transplant area, evaluating the impact of infrastructure and health personnel operations on air contamination. The environmental parameters and aerobiome of the HSC transplant area at Hospital Juárez de México were quantified over one year. Finally, a double-entry Vester matrix was constructed to classify problems according to their degree of causality. The abundance and taxonomic diversity of the aerobiome were dependent on seasonality, environmental factors, and high-efficiency filtration. Gram-positive bacteria predominated, followed by fungi and Gram-negative bacteria. ANOVA revealed significant differences in the bacterial aerobiome but not in the fungal aerobiome among the transplant rooms. Clinically, fungi such as Aspergillus fumigatus, Alternaria spp., Cladosporium spp., and Penicillium spp. were identified. ESKAPE bacteria typing revealed clonal dispersion. Finally, the Vester matrix highlighted critical problems associated with contamination due to the absence of HEPA filtration and non-adherence in patient management practices. HEPA filtration and positive pressure are essential to improve the air quality and reduce the microbiological load. However, the control areas will depend on patient management and routine activities, such as entry protocols in controlled areas.

Abstract Background Sclerostin is an inhibitor of the Wnt/b-catenin pathway, which regulates bone formation, and can be expressed in vascular smooth muscle cells (VSMCs). Type 2 diabetes (T2D) is associated with an increased risk of cardiovascular disease (CVD) and increased serum and tissue expression of sclerostin. However, whether the role of sclerostin is detrimental or protective in the development of CVD is unknown. Therefore, our aims are to determine the level of sclerostin in T2D patients with/without CVD and in controls, both at serum and vascular tissue, and to analyze the role of sclerostin in VSMCs under calcified environments. Methods Cross-sectional study including 121 controls and 139 T2D patients with/without CVD (48/91). Sclerostin levels in serum were determined by ELISA, and sclerostin expression was analyzed by RT-qPCR and immunohistochemistry in calcified and non-calcified artery of lower limb from T2D patients (n = 7) and controls (n = 3). In vitro experiments were performed in VSMCs (mock and sclerostin overexpression) under calcifying conditions analyzing the sclerostin function by determination of calcium and phosphate concentrations, and quantification of calcium deposits by Alizarin Red. Proliferation and apoptosis were analyzed by MTT assay and flow cytometry, respectively. The regulation of the expression of genes involved in bone metabolism was determined by RT-qPCR. Results A significant increase in serum sclerostin levels in T2D patients with CVD compared to T2D patients without CVD and controls (p