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1.
Notas enferm. (Córdoba) ; 25(43): 17-23, jun.2024.
Artigo em Espanhol | LILACS, BDENF - Enfermagem, UNISALUD, InstitutionalDB, BINACIS | ID: biblio-1561178

RESUMO

Determinar el nivel de conocimiento de los estudiantes de enfermería de la Universidad Técnica de Ambato sobre la desinfección terminal del área quirúrgica. Metodología: Esta investigación es cuantitativa, con enfoque descriptivo de cohorte transversal ya que el nivel de conocimiento se ha representado mediante tablas y gráficos para describir la problemática del periodo octubre 2023-febrero 2024. Resultados: Se evidencia el alto porcentaje de respuestas incorrectas por cada ítem por parte de los estudiantes. La categoría desinfección fue respondida de manera incorrecta con un porcentaje del 26%, la categoría proceso de desinfección con el 55,6%, la categoría aplicación del DAN con el 45.8%, la categoría desinfectante del DAN con el 36,2% y, por último, la categoría riesgo y prevención del DAN con el 29,2%. Conclusiones: El nivel de conocimiento de los estudiantes sobre desinfección es bajo, porque no están lo suficientemente motivados o interesados en el tema de desinfección[AU]


Determine the level of knowledge of nursing students at the Technical University of Ambato about terminal disinfection of the surgical area.Methodology:This research is quantitative, with a descriptive cross-sectional cohort approach and the level of knowledge has been represented through tables and graphs to describe the problems of the period October 2023-February 2024.Results:A high percentage of incorrect answers for each item by the students is evident. The disinfection category was answered incorrectly with a percentage of 26%, the disinfection process category with 55.6%, the DAN application category with 45.8%, the disinfectant category with 36.2% and, finally, the DAN risk and prevention category. with 29.2%. Conclusions:The level of knowledge of students about disinfection is low, because they are not sufficiently motivated or interested in the topic of disinfection[AU]


Determinar o nível de conhecimento dos estudantes de enfermagem da Universidade Técnica de Ambato sobre desinfecção terminal da área cirúrgica. Metodologia:Esta pesquisa é quantitativa, com abordagem descritiva de coorte transversal e o nível de conhecimento foi representado por meio de tabelas e gráficos para descrever os problemas do período outubro de 2023 a fevereiro de 2024.Resultados: Evidencia-se um alto percentual de respostas incorretas para cada item por parte dos alunos. A categoria desinfecção foi respondida incorretamente com um percentual de 26%, a categoria processo de desinfecção com 55,6%, a categoria aplicação DAN com 45,8%, a categoria desinfetante com 36,2% e, por último, a categoria risco e prevenção DAN. com 29,2%.Conclusões:O nível de conhecimento dos alunos sobre desinfecção é baixo, porque não estão suficientemente motivados ou interessados no tema da desinfecção[AU]


Assuntos
Humanos , Adulto , Salas Cirúrgicas , Conhecimentos, Atitudes e Prática em Saúde , Controle de Infecções , Desinfetantes
2.
Environ Res Lett ; 19(8): 081002, 2024 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-39007070

RESUMO

Households that burn biomass in inefficient open fires-a practice that results in $1.6 trillion in global damages from health impacts and climate-altering emissions yearly-are often unable to access cleaner alternatives, like gas, which is widely available but unaffordable, or electricity, which is unattainable for many due to insufficient supply and reliability of electricity services. Governments are often reluctant to make gas affordable. We argue that condemnation of all fossil fuel subsidies is short-sighted and does not adequately consider subsidizing gas for cooking as a potential strategy to improve public health and reduce greenhouse gas emissions.

3.
Healthcare (Basel) ; 12(13)2024 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-38998777

RESUMO

(1) Background: Mental health problems are associated with negative connotations that may lead to discrimination and rejection of people diagnosed with mental disorders. The present study aimed to develop and validate a new scale (the Spanish Social Stigma Scale-S3) to assess the current level of social stigma in the general Spanish population. (2) Methods: The assessment tool was developed after reviewing the items of existing tools that represent the most appropriate indicators for the assessment of social stigma. A review was performed by volunteer subjects and by a group of experts in the field, based on the participation of 563 respondents to a survey. (3) Results: The confirmatory factor analysis revealed that the developed tool fits with the factors that determine the level of social stigma and shows good internal consistency (χ2SB = 412.0321, gl = 293, p < 0.01; BBNNFI = 0.922; CFI = 0.930; IFI = 0.931; RMSEA = 0.028 [0.022, 0.035]). (4) Conclusions: The S3 is useful for assessing knowledge, attitudes, and behavior towards people diagnosed with a mental disorder. This tool may be used for the identification and development of mechanisms necessary for the reduction of social stigma in the general population.

4.
Wellcome Open Res ; 9: 129, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38989474

RESUMO

We present a genome assembly from an individual specimen of Fragum fragum (a heart cockle; Mollusca; Bivalvia; Veneroida; Cardiidae). The genome sequence is 1,153.1 megabases in span. Most of the assembly is scaffolded into 19 chromosomal pseudomolecules. The mitochondrial genome has also been assembled and is 22.36 kilobases in length. Gene annotation of this assembly on Ensembl identified 17,262 protein coding genes.

5.
J Am Coll Cardiol ; 84(3): 233-243, 2024 Jul 16.
Artigo em Inglês | MEDLINE | ID: mdl-38986667

RESUMO

BACKGROUND: Diabetic cardiomyopathy (DbCM) increases risk of overt heart failure in individuals with diabetes mellitus. Racial and ethnic differences in DbCM remain unexplored. OBJECTIVES: The authors sought to identify racial and ethnic differences among individuals with type 2 diabetes mellitus, structural heart disease, and impaired exercise capacity. METHODS: The ARISE-HF (Aldolase Reductase Inhibitor for Stabilization of Exercise Capacity in Heart Failure) trial is assessing the efficacy of an aldose reductase inhibitor for exercise capacity preservation in 691 persons with DbCM. Baseline characteristics, echocardiographic parameters, and functional capacity were analyzed and stratified by race and ethnicity. RESULTS: The mean age of the study participants was 67.4 years; 50% were women. Black and Hispanic patients had lower use of diabetes mellitus treatments. Black patients had poorer baseline ventricular function and more impaired global longitudinal strain. Overall, health status was preserved, based on Kansas City Cardiomyopathy Questionnaire scores, but reduced exercise capacity was present as evidenced by reduced Physical Activity Scale for the Elderly (PASE) scores. When stratified by race and ethnicity and compared with the entire cohort, Black patients had poorer health status, more reduced physical activity, and a greater impairment in exercise capacity during cardiopulmonary exercise testing, whereas Hispanic patients also displayed compromised cardiopulmonary exercise testing functional capacity. White patients demonstrated higher physical activity and functional capacity. CONCLUSIONS: Racial and ethnic differences exist in baseline characteristics of persons affected by DbCM, with Black and Hispanic study participants demonstrating higher risk features. These insights inform the need to address differences in the population with DbCM. (Safety and Efficacy of AT-001 in Patients With Diabetic Cardiomyopathy [ARISE-HF]; NCT04083339).


Assuntos
Diabetes Mellitus Tipo 2 , Cardiomiopatias Diabéticas , Humanos , Feminino , Masculino , Cardiomiopatias Diabéticas/etnologia , Cardiomiopatias Diabéticas/epidemiologia , Idoso , Pessoa de Meia-Idade , Diabetes Mellitus Tipo 2/etnologia , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/tratamento farmacológico , Tolerância ao Exercício/fisiologia , Hispânico ou Latino/estatística & dados numéricos , Negro ou Afro-Americano , Ecocardiografia , Teste de Esforço , Insuficiência Cardíaca/etnologia , Insuficiência Cardíaca/fisiopatologia , Insuficiência Cardíaca/tratamento farmacológico
6.
Mycoses ; 67(7): e13765, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38988310

RESUMO

BACKGROUND: Candida auris, a multidrug-resistant fungal pathogen, has received considerable attention owing to its recent surge, especially in South America, which coincides with the ongoing global COVID-19 pandemic. Understanding the clinical and microbiological characteristics of outbreaks is crucial for their effective management and control. OBJECTIVE: This retrospective observational study aimed to characterize a C. auris outbreak at a Peruvian referral hospital between January 2021 and July 2023. METHODS: Data were collected from hospitalized patients with positive C. auris culture results. Microbiological data and antifungal susceptibility test results were analysed. Additionally, infection prevention and control measures have been described. Statistical analysis was used to compare the characteristics between the infected and colonized patients. RESULTS: Thirty-three patients were identified, mostly male (66.7%), with a median age of 53 years. Among them, 18 (54.5%) were colonized, and 15 (45.5%) were infected. Fungemia was the predominant presentation (80%), with notable cases of fungemia in tuberculosis patients with long-stay devices for parenteral anti-tuberculosis therapy. Seventy-five percent of the isolates exhibited fluconazole resistance. Echinocandins were the primary treatment, preventing fungemia recurrence within 30 days. Infected patients had significantly longer hospital stays than colonized patients (100 vs. 45 days; p = .023). Hospital mortality rates were 46.7% and 25% in the infected and fungemia patients, respectively. Simultaneous outbreaks of multidrug-resistant bacteria were documented. CONCLUSIONS: This study underscores the severity of a C. auris outbreak at a referral hospital in Peru, highlighting its significant impact on patient outcomes and healthcare resources. The high prevalence of fluconazole-resistant isolates, leading to prolonged hospital stay and high mortality rates, particularly in cases of fungemia, underscores the critical need for effective infection prevention and control strategies.


Assuntos
Antifúngicos , Candida auris , Candidíase , Surtos de Doenças , Humanos , Peru/epidemiologia , Pessoa de Meia-Idade , Masculino , Feminino , Estudos Retrospectivos , Adulto , Candidíase/epidemiologia , Candidíase/microbiologia , Antifúngicos/uso terapêutico , Antifúngicos/farmacologia , Idoso , Candida auris/efeitos dos fármacos , COVID-19/epidemiologia , Testes de Sensibilidade Microbiana , Infecção Hospitalar/epidemiologia , Infecção Hospitalar/microbiologia , Candida/efeitos dos fármacos , Candida/isolamento & purificação , Candida/classificação , Encaminhamento e Consulta
7.
Eur J Prev Cardiol ; 2024 Jul 23.
Artigo em Inglês | MEDLINE | ID: mdl-39041366

RESUMO

AIMS: To external validate the SCORE2, AHA/ACC Pooled Cohort Equation (PCE), Framingham Risk Score (FRS), Non-Laboratory INTERHEART Risk Score (NL-IHRS), Globorisk-LAC, and WHO prediction models and compare their discrimination and calibration capacity. METHODS: Validation in individuals aged 40-69 years with at least 10 years follow-up and without baseline use of statins or cardiovascular diseases from the Prospective Urban Rural Epidemiology prospective cohort study (PURE)-Colombia. For discrimination, the C-statistic, and Receiver Operating Characteristic curves with the integrated area under the curve (AUCi) were used and compared. For calibration, the smoothed time-to-event method was used, choosing a recalibration factor based on the integrated calibration index (ICI). In the NL-IHRS, linear regressions were used. RESULTS: In 3,802 participants (59.1% women), baseline risk ranged from 4.8% (SCORE2 women) to 55.7% (NL-IHRS). After a mean follow-up of 13.2 years, 234 events were reported (4.8 cases per 1000 person-years). The C-statistic ranged between 0.637 (0.601-0.672) in NL-IHRS and 0.767 (0.657-0.877) in AHA/ACC PCE. Discrimination was similar between AUCi. In women, higher overprediction was observed in the Globorisk-LAC (61%) and WHO (59%). In men, higher overprediction was observed in FRS (72%) and AHA/ACC PCE (71%). Overestimations were corrected after multiplying by a factor derived from the ICI. CONCLUSIONS: Six prediction models had a similar discrimination capacity, supporting their use after multiplying by a correction factor. If blood tests are unavailable, NL-IHRS is a reasonable option. Our results suggest that these models could be used in other countries of Latin America after correcting the overestimations with a multiplying factor.


Detecting people at high risk of cardiovascular disease and implementing preventive interventions in this population is a key strategy in primary prevention. Recently, new risk calculation tools have been developed, but before their application and routine use in populations different from those where it was developed, it's necessary to validate them. The recommendations for predicting cardiovascular risk in Colombia's guidelines are based on studies with noteworthy limitations. This study involving 3,802 healthy individuals in Colombia supports the recommendation of using these prediction models. The estimation result should be multiplied by a correction factor, because most of the prediction models overestimate cardiovascular risk. For example, the correction factors suggested in women for AHA/ACC PCE and SCORE2 are 0.54 and 0.75, respectively. In men, the correction factors suggested in AHA/ACC PCE and SCORE2 are 0.28 and 0.61, respectively. Therefore, the present study with a contemporary population provides additional evidence to update these recommendations in Colombia and perhaps in Latin America.

8.
J Sci Food Agric ; 2024 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-39031784

RESUMO

BACKGROUND: Viticulture has adapted foliar applications of biostimulants as a tool to improve crop quality. Recently, nanotechnology has been incorporated as a strategy to reduce the loss of biostimulants and treat nutrient deficiencies. Therefore, the present study aimed to investigate the effect of foliar applications of amorphous calcium phosphate nanoparticles (ACP) doped with methyl jasmonate (ACP-MeJA) and urea (ACP-Ur), individually or together (ACP-MeJA+Ur), on the content of volatile compounds in 'Tempranillo' grapes, compared to the conventional application of MeJA and Ur, individually or in combination (MeJA+Ur). RESULTS: The results showed that nanoparticle treatments reduced the total C6 compounds and some carbonyl compounds in the grape musts. This is of novel interest because their presence at high levels is undesirable to quality. In addition, some aroma-positive compounds such as nerol, neral, geranyl acetone, ß-cyclocitral, ß-ionone, 2-phenylethanal and 2-phenylethanol increased, despite applying MeJA and Ur at a lower dose. CONCLUSION: Consequently, although few differences in grape volatile composition were detected, nanotechnology could be an option for improving the aromatic quality of grapes, at the same time as reducing the required doses of biostimulants and generating more sustainable agricultural practices. © 2024 The Author(s). Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

9.
Nutrients ; 16(13)2024 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-38999807

RESUMO

(1) Background: Emerging adulthood, from the age of 18 to 29 years, is a crucial phase for individuals with Type 1 Diabetes Mellitus, as it affects their Health-Related Quality of Life. (2) Methods: This cross-sectional study analyzes the influence of the Mediterranean diet, Diabetes duration, Hemoglobin A1c, and sleep disorders on Health-Relate Quality of Life in Type 1 Diabetes Mellitus. In this study, conducted in Andalusia, Spain, 362 emerging adults with Type 1 Diabetes Mellitus completed the Oviedo Sleep Questionnaire, the Adaptation of Mediterranean Diet Adherence Screener, and the Vida con Diabetes Tipo 1 (ViDa1) Health-Related Quality of Life questionnaire between October 2021 and July 2022. Pearson correlation coefficients and a multiple regression analysis were conducted for each Health-Related Quality of Life in Type 1 Diabetes Mellitus dimension (Interference with Life, Well-being, Self-care, and Concern about the Condition) for overall sample and separately for males and females. (3) Results: Different and significant correlations are found among factors such as Age, Body Mass Index, Currently being a student, Hemoglobin A1c, Sleep satisfaction, Insomnia, Hypersomnolence, and Adherence to Mediterranean diet. Notably, Insomnia is a main predictor for Interference with Life, Well-being, and Concern about the Condition, especially for females. (4) Conclusions: Insomnia is the main predictor of Health-Related Quality of Life in Type 1 Diabetes Mellitus among Andalusian emerging adults with this condition. Consequently, a regular assessment of sleep and Health-Related Quality of Life from a gender perspective in this age group is crucial.


Assuntos
Diabetes Mellitus Tipo 1 , Dieta Mediterrânea , Hemoglobinas Glicadas , Qualidade de Vida , Humanos , Diabetes Mellitus Tipo 1/psicologia , Estudos Transversais , Masculino , Feminino , Adulto , Adulto Jovem , Adolescente , Hemoglobinas Glicadas/análise , Hemoglobinas Glicadas/metabolismo , Inquéritos e Questionários , Espanha/epidemiologia , Transtornos do Sono-Vigília/etiologia
10.
Int J Mol Sci ; 25(13)2024 Jun 22.
Artigo em Inglês | MEDLINE | ID: mdl-38999991

RESUMO

Sunitinib has greatly improved the survival of clear cell renal cell carcinoma (ccRCC) patients in recent years. However, 20-30% of treated patients do not respond. To identify miRNAs and genes associated with a response, comparisons were made between biopsies from responder and non-responder ccRCC patients. Using integrated transcriptomic analyses, we identified 37 miRNAs and 60 respective target genes, which were significantly associated with the NF-kappa B, PI3K-Akt and MAPK pathways. We validated expression of the miRNAs (miR-223, miR-155, miR-200b, miR-130b) and target genes (FLT1, PRDM1 and SAV1) in 35 ccRCC patients. High levels of miR-223 and low levels of FLT1, SAV1 and PRDM1 were associated with worse overall survival (OS), and combined miR-223 + SAV1 levels distinguished responders from non-responders (AUC = 0.92). Using immunohistochemical staining of 170 ccRCC patients, VEGFR1 (FLT1) expression was associated with treatment response, histological grade and RECIST (Response Evaluation Criteria in Solid Tumors) score, whereas SAV1 and BLIMP1 (PRDM1) were associated with metachronous metastatic disease. Using in situ hybridisation (ISH) to detect miR-155 we observed higher tumoural cell expression in non-responders, and non-tumoural cell expression with increased histological grade. In summary, our preliminary analysis using integrated miRNA-target gene analyses identified several novel biomarkers in ccRCC patients that surely warrant further investigation.


Assuntos
Carcinoma de Células Renais , Resistencia a Medicamentos Antineoplásicos , Regulação Neoplásica da Expressão Gênica , Neoplasias Renais , MicroRNAs , Sunitinibe , Humanos , Carcinoma de Células Renais/genética , Carcinoma de Células Renais/tratamento farmacológico , Carcinoma de Células Renais/patologia , MicroRNAs/genética , Sunitinibe/uso terapêutico , Sunitinibe/farmacologia , Neoplasias Renais/genética , Neoplasias Renais/tratamento farmacológico , Neoplasias Renais/patologia , Resistencia a Medicamentos Antineoplásicos/genética , Feminino , Masculino , Pessoa de Meia-Idade , Idoso , Antineoplásicos/uso terapêutico , Antineoplásicos/farmacologia , Perfilação da Expressão Gênica/métodos , Biomarcadores Tumorais/genética , Adulto , Indóis/uso terapêutico , Indóis/farmacologia
11.
Int J Mol Sci ; 25(13)2024 Jun 23.
Artigo em Inglês | MEDLINE | ID: mdl-39000001

RESUMO

Phenolic compounds with a position ortho to the free phenolic hydroxyl group occupied can be tyrosinase substrates. However, ortho-substituted compounds are usually described as inhibitors. The mechanism of action of tyrosinase on monophenols is complex, and if they are ortho-substituted, it is more complicated. It can be shown that many of these molecules can become substrates of the enzyme in the presence of catalytic o-diphenol, MBTH, or in the presence of hydrogen peroxide. Docking studies can help discern whether a molecule can behave as a substrate or inhibitor of the enzyme. Specifically, phenols such as thymol, carvacrol, guaiacol, eugenol, isoeugenol, and ferulic acid are substrates of tyrosinase, and docking simulations to the active center of the enzyme predict this since the distance of the peroxide oxygen from the oxy-tyrosinase form to the ortho position of the phenolic hydroxyl is adequate for the electrophilic attack reaction that gives rise to hydroxylation occurring.


Assuntos
Simulação de Acoplamento Molecular , Monofenol Mono-Oxigenase , Fenóis , Monofenol Mono-Oxigenase/química , Monofenol Mono-Oxigenase/metabolismo , Monofenol Mono-Oxigenase/antagonistas & inibidores , Fenóis/química , Fenóis/metabolismo , Especificidade por Substrato , Domínio Catalítico
12.
J Diabetes Res ; 2024: 7497059, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39022652

RESUMO

Background: Emerging adulthood is a phase characterized by exploration which potentially affecting sleep quality. While many emerging adults are healthy, the effects of chronic diseases such as Type 1 Diabetes Mellitus (T1DM) on sleep may be underestimated. Considering the frequency of nocturnal glycemic alterations that cause awakenings, this study explored the perceptions of emerging adults in Andalusia on the influence of T1DM on their sleep quality. Methods: A qualitative approach was used for this study. Purposive sampling through diabetes associations was initially utilized, supplemented by snowball sampling, in order to conduct semistructured interviews with 73 emerging adults (aged 18-29) diagnosed with T1DM, to explore their perceptions of the influence of T1DM on sleep quality. Interpretative Phenomenological Analysis was used for data analysis. Results: Sleep disruptions caused by overnight hyperglycemia and hypoglycemia were identified as significant factors. However, 62% of participants did not perceive the influence of diabetes on their sleep quality, despite experiencing frequent overnight glycemic alterations (reported by 40.9%). Conclusions: Perception of the impact of T1DM on sleep quality does not always align with the frequency of disruptions. Nonetheless, promoting healthy sleep and systematically assessing sleep quality can benefit both sleep and glycemic outcomes, regardless of individual perceptions.


Assuntos
Diabetes Mellitus Tipo 1 , Pesquisa Qualitativa , Qualidade do Sono , Humanos , Diabetes Mellitus Tipo 1/psicologia , Diabetes Mellitus Tipo 1/complicações , Diabetes Mellitus Tipo 1/fisiopatologia , Adulto , Feminino , Masculino , Adulto Jovem , Adolescente , Percepção , Glicemia/metabolismo , Hipoglicemia/psicologia , Sono/fisiologia , Hiperglicemia/psicologia , Transtornos do Sono-Vigília/psicologia , Transtornos do Sono-Vigília/epidemiologia , Transtornos do Sono-Vigília/etiologia , Transtornos do Sono-Vigília/fisiopatologia
13.
J Clin Med ; 13(13)2024 Jun 27.
Artigo em Inglês | MEDLINE | ID: mdl-38999315

RESUMO

Background: Maxillary sinus lift is a well-documented and accepted technique in the rehabilitation of the posterior maxilla. Schneiderian membrane perforation is the most common complication and may occur in between 7% and 56% of cases. Different materials and techniques have been described to achieve reparation of the perforation. The aim of this study was to establish whether the perforation of the Schneiderian membrane and its repair during maxillary sinus lift surgery results in a lower implant survival rate compared to those cases where the membrane has not been perforated. Materials and methods: A systematic review and meta-analysis of studies assessing the survival rate of implants placed in regenerated sinus using the lateral window approach, where the perforation of the Schneiderian membrane occur, was carried out. Statistical analysis was performed with Open Meta-Analyst, calculating the odds ratio of implants placed in perforated sinuses and non-perforated sinuses. Results: Ten articles were included in the qualitative analysis and seven articles in the quantitative analysis or meta-analysis. A total of 1224 maxillary sinus augmentation surgeries were performed without perforation of the Schneiderian membrane and 2725 implants were placed; 62 implants failed during the follow-up period with an overall survival rate of 97.7%. In 480 perforated sinuses, 1044 implants were placed, of which 30 failed; the overall survival rate was 97.1%. There were no significant differences between the implant survival rate of the implants in the two groups (OR = 0.78; CI = 0.49-2.23; p = 0.28 and I2 heterogeneity: 0%, p = 0.44). Conclusions: Schneiderian membrane perforation, as long as it is repaired, does not appear to negatively influence implant survival rate. Membrane perforation should not be considered a reason to abort the procedure or an absolute contraindication to implant placement.

14.
bioRxiv ; 2024 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-38895387

RESUMO

While there is extensive information about sperm nuclear basic proteins (SNBP) in vertebrates, there is very little information about Arthropoda by comparison. This paper aims to contribute to filling this gap by analyzing these proteins in the sperm of the noble false widow spider Steatoda nobilis (Order Araneae, Family Theridiidae). To this end, we have developed a protein extraction method that allows the extraction of cysteine-containing protamines suitable for the preparation and analysis of SNBPs from samples where the amount of starting tissue material is limited. We carried out top-down mass spectrometry sequencing and molecular phylogenetic analyses to characterize the protamines of S. nobilis and other spiders. We also used electron microscopy to analyze the chromatin organization of the sperm, and we found it to exhibit liquid-liquid phase spinodal decomposition during the late stages of spermiogenesis. These studies further our knowledge of the distribution of SNBPs within the animal kingdom and provide additional support for a proposed evolutionary origin of many protamines from a histone H1 (H5) replication-independent precursor.

15.
Gene ; 928: 148720, 2024 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-38936785

RESUMO

Many critical aquatic habitats are in close proximity to human activity (i.e., adjacent to residences, docks, marinas, etc.), and it is vital to monitor biodiversity in these and similar areas that are subject to ongoing urbanization, pollution, and other environmental disruptions. Environmental DNA (eDNA) metabarcoding is an accessible, non-invasive genetic technique used to detect and monitor species diversity and is a particularly useful approach in areas where traditional biodiversity monitoring methods (e.g., visual surveys or video surveillance) are challenging to conduct. In this study, we implemented an eDNA approach that used a combination of three distinct PCR primer sets to detect marine vertebrates within a canal system of Biscayne Bay, Florida, an ecosystem representative of challenging sampling conditions and a myriad of impacts from urbanization. We detected fish species from aquarium, commercial, and recreational fisheries, as well as invasive, cryptobenthic, and endangered vertebrate species, including charismatic marine mammals such as the protected West Indian manatee, Trichechus manatus. Our results support the potential for eDNA analyses to supplement traditional biodiversity monitoring methods and ultimately serve as an important tool for ecosystem management. This approach minimizes stress or disturbance to organisms and removes the intrinsic risk and logical limitations of SCUBA diving, snorkeling, or deploying sensitive equipment in areas that are subject to high vessel traffic and/or low visibility. Overall, this work sets the framework to understand how biodiversity may change over different spatial and temporal scales in an aquatic ecosystem heavily influenced by urbanization and validates the use of eDNA as a complementary approach to traditional ecological monitoring methods.

16.
mSystems ; 9(7): e0070923, 2024 Jul 23.
Artigo em Inglês | MEDLINE | ID: mdl-38856205

RESUMO

The occurrence of cyanobacterial harmful algal blooms (cyanoHABs) is related to their physical and chemical environment. However, less is known about their associated microbial interactions and processes. In this study, cyanoHABs were analyzed as a microbial ecosystem, using 1 year of 16S rRNA sequencing and 70 metagenomes collected during the bloom season from Lake Okeechobee (Florida, USA). Biogeographical patterns observed in microbial community composition and function reflected ecological zones distinct in their physical and chemical parameters that resulted in bloom "hotspots" near major lake inflows. Changes in relative abundances of taxa within multiple phyla followed increasing bloom severity. Functional pathways that correlated with increasing bloom severity encoded organic nitrogen and phosphorus utilization, storage of nutrients, exchange of genetic material, phage defense, and protection against oxidative stress, suggesting that microbial interactions may promote cyanoHAB resilience. Cyanobacterial communities were highly diverse, with picocyanobacteria ubiquitous and oftentimes most abundant, especially in the absence of blooms. The identification of novel bloom-forming cyanobacteria and genomic comparisons indicated a functionally diverse cyanobacterial community with differences in its capability to store nitrogen using cyanophycin and to defend against phage using CRISPR and restriction-modification systems. Considering blooms in the context of a microbial ecosystem and their interactions in nature, physiologies and interactions supporting the proliferation and stability of cyanoHABs are proposed, including a role for phage infection of picocyanobacteria. This study displayed the power of "-omics" to reveal important biological processes that could support the effective management and prediction of cyanoHABs. IMPORTANCE: Cyanobacterial harmful algal blooms pose a significant threat to aquatic ecosystems and human health. Although physical and chemical conditions in aquatic systems that facilitate bloom development are well studied, there are fundamental gaps in the biological understanding of the microbial ecosystem that makes a cyanobacterial bloom. High-throughput sequencing was used to determine the drivers of cyanobacteria blooms in nature. Multiple functions and interactions important to consider in cyanobacterial bloom ecology were identified. The microbial biodiversity of blooms revealed microbial functions, genomic characteristics, and interactions between cyanobacterial populations that could be involved in bloom stability and more coherently define cyanobacteria blooms. Our results highlight the importance of considering cyanobacterial blooms as a microbial ecosystem to predict, prevent, and mitigate them.


Assuntos
Bacteriófagos , Cianobactérias , Proliferação Nociva de Algas , Cianobactérias/virologia , Cianobactérias/genética , Bacteriófagos/genética , RNA Ribossômico 16S/genética , Microbiota/genética , Metagenoma , Lagos/microbiologia , Lagos/virologia , Genômica , Biodiversidade
17.
Cir Esp (Engl Ed) ; 2024 Jun 20.
Artigo em Inglês | MEDLINE | ID: mdl-38908514

RESUMO

INTRODUCTION: Peritoneal sarcomatosis is a rare disease, with multiple histological origins and poor overall prognosis. The option of radical cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) is controversial. The results of a surgical team experienced in these procedures are analyzed and discussed based on the available evidence. METHODS: Study on a prospective database of patients with peritoneal sarcomatosis who underwent CRS and HIPEC, from 2016 to 2022, in a national reference center for sarcomas and peritoneal oncological surgery, who met the established inclusion/exclusion criteria. RESULTS: 23 patients were included in the study, with a median age of 53 years (6-68). Recurrent/persistent clinical presentation predominated (78.3%). Visceral origin (including GIST and non-GIST peritoneal) accounted for 47.8% of patients, compared to 43.5% uterine and 8.7% retroperitoneal. The median PCI was 17 (3-36), with CC0 cytoreduction of 87%. Postoperative morbidity (Dindo Clavien III-IV) of 13%, with no postoperative mortality in the series. Overall survival and disease-free survival at 5 years were 64% and 34%, respectively. Histological grade was the most influential prognostic factor for survival. CONCLUSIONS: The results of the series, with low morbidity, support the benefit of radical peritoneal oncological surgery in patients with peritoneal sarcomatosis after adequate selection, as long as it is performed in high-volume centers, experienced surgeons and expert multidisciplinary teams. However, the role of HIPEC remains to be demonstrated and pending future studies.

18.
Dent J (Basel) ; 12(6)2024 Jun 17.
Artigo em Inglês | MEDLINE | ID: mdl-38920885

RESUMO

BACKGROUND: The increase in soft tissue (ST) around implants can benefit peri-implant health and aesthetic results. The objective was to compare the gingival and esthetic health benefits of immediate implant placement (IIP) with simultaneous or delayed connective tissue graft (CTG) compared to IIP without CTG. METHODS: A systematic review was carried out by two reviewers in Medline-Pubmed, Scopus, and Cochrane. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) were considered. Randomized Clinical Trials (RCTs) that were published between April 2017 and February 2024 were used. Studies that analyzed the performance of a simultaneous or deferred CTG after the placement of an implant in the aesthetic zone, with or without immediate provisionalization, without previous regeneration, with a follow-up of 6 months, and that were performed in humans were included. RESULTS: Quantitative analysis was performed using data provided by the RCTs. The five RCTs that were selected analyzed a total "n" of 245 subjects who met the inclusion criteria and focused on the subject of the study. In the quantitative analysis, four RCTs were included. The studies evaluated buccal gingiva levels when placing the IIP with and without CTG, obtaining a mean buccal gingiva level difference of 0.09 mm (95% CI: -0.54 to 0.72, p = 0.05), statistically not significant, but with a favorable trend. CONCLUSIONS: The use of CTG associated with the II can maintain the gum level but not increase the volume. CTG is favorable for achieving successful esthetic results when immediate placement of an implant with a provisional prosthesis is planned.

19.
Cancer Genomics Proteomics ; 21(4): 350-360, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38944422

RESUMO

BACKGROUND/AIM: Uveal melanoma is an ocular malignancy whose prognosis severely worsens following metastasis. In order to improve the understanding of molecular physiology of metastatic uveal melanoma, we identified genes and pathways implicated in metastatic vs non-metastatic uveal melanoma. PATIENTS AND METHODS: A previously published dataset from Gene Expression Omnibus (GEO) was used to identify differentially expressed genes between metastatic and non-metastatic samples as well as to conduct pathway and perturbagen analyses using Gene Set Enrichment Analysis (GSEA), EnrichR, and iLINCS. RESULTS: In male metastatic uveal melanoma samples, the gene LOC401052 is significantly down-regulated and FHDC1 is significantly up-regulated compared to non-metastatic male samples. In female samples, no significant differently expressed genes were found. Additionally, we identified many significant up-regulated immune response pathways in male metastatic uveal melanoma, including "T cell activation in immune response". In contrast, many top up-regulated female pathways involve iron metabolism, including "heme biosynthetic process". iLINCS perturbagen analysis identified that both male and female samples have similar discordant activity with growth factor receptors, but only female samples have discordant activity with progesterone receptor agonists. CONCLUSION: Our results from analyzing genes, pathways, and perturbagens demonstrate differences in metastatic processes between sexes.


Assuntos
Perfilação da Expressão Gênica , Melanoma , Neoplasias Uveais , Humanos , Neoplasias Uveais/genética , Neoplasias Uveais/patologia , Neoplasias Uveais/metabolismo , Melanoma/genética , Melanoma/patologia , Melanoma/metabolismo , Feminino , Masculino , Metástase Neoplásica , Regulação Neoplásica da Expressão Gênica , Transcriptoma , Fatores Sexuais
20.
Radiol Case Rep ; 19(8): 3529-3532, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38881623

RESUMO

Syphilis is a chronic infectious disease, which dates back to the XV century and is caused by the spirochete treponema pallidum, capable of invading the central nervous system in any of its stages- Its incidence has increased in parallel to the HIV/AIDS pandemic, and the synergism between both pathologies is such. that it has become a public health problem in recent years. Here we present the case of a 31-year-old female patient, who consulted for headache associated with decreased visual acuity and provided an unenhanced head CT showing hypodense lesions in both thalamic regions, serological tests for syphilis were reactive and those for HIV were not reactive. The brain MRI with spectroscopy was reported in favor of cerebral toxoplasmosis, which was later ruled out with a study of cerebrospinal fluid. Management with penicillin G sodium IV for 6 weeks was indicated, achieving complete imaging resolution of her lesions.

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