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1.
J Control Release ; 375: 601-613, 2024 Sep 23.
Artigo em Inglês | MEDLINE | ID: mdl-39278357

RESUMO

Thermogenic brown adipose tissue (BAT) has emerged as an attractive target for combating obesity. However, pharmacological activation of energy expenditure by BAT and/or induction of browning of white adipose tissue (WAT) has been hampered by cardiovascular side effects. To address these concerns, we developed polylactide-co-glycolide acid (PLGA) microspheres loaded with mirabegron (MIR), a selective beta-3 adrenergic receptor (ADRB3) agonist, to achieve sustained local induction and activation of thermogenic adipocytes. MIR-loaded PLGA microspheres (MIR-MS) effectively activated brown adipocytes and enhanced the thermogenic program in white adipocytes. Moreover, treating isolated inguinal WAT (iWAT) with MIR-MS resulted in increased expression of browning markers and elevated lipolysis mainly via ADRB3. In mice, injection of MIR-MS over four weeks induced browning of iWAT at the injection site. Importantly, local MIR-MS injection successfully mitigated unwanted cardiovascular risks, including high systolic blood pressure (SBP) and heart rate, as compared to MIR-treated mice. Finally, injecting MIR-MS into human subcutaneous WAT led to a significant induction of lipolysis and an increase in the expression of thermogenic marker uncoupling protein 1 (UCP1). Taken together, our findings indicate that MIR-MS function as a local drug release system that induces browning of human and murine subcutaneous WAT while mitigating undesirable cardiovascular effects.

2.
Surg Endosc ; 2024 Sep 12.
Artigo em Inglês | MEDLINE | ID: mdl-39266760

RESUMO

BACKGROUND: We previously showed worse outcomes among lower socioeconomic status (SES) groups following metabolic/bariatric surgery (MBS). In light of healthcare changes in response to COVID-19, this study aims to evaluate post-pandemic MBS outcomes and determine if prior socioeconomic disparities persisted in the post-COVID era. METHODS: A retrospective chart review of patients undergoing primary Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) between 2015 and 2022 was performed. Patients were stratified into pre- and post-COVID groups. Post-COVID cohort was further stratified into high (HT) and low (LT) tier status based on Distressed Communities Index, a geocoded composite measure of SES. Preoperative characteristics and postoperative outcomes were compared between pre- and post-COVID cohorts, as well as between post-COVID HT and LT groups. RESULTS: Of 709 patients, 82.9% were pre-COVID and 17.1% were post-COVID. Post-COVID cohort had greater rate of public insurance (46% vs. 37%, p < 0.001), longer wait time to surgery (mean 358 ± 609.8 days vs 241.9 ± 368.5 days, p = 0.045), and were more likely to undergo RYGB (69% vs. 56%, p = 0.010). Post-COVID patients also had lower risk of any complications on multivariable analysis (OR 0.599, 95% CI 0.372-0.963), had higher follow-up rates at post-discharge (95.8% vs 79.7%, p < 0.005), 6-month (93% vs. 82%, p < 0.001) and 12-month visits (75% vs. 63%, p = 0.005), and lost more weight at 12 months (67% excess weight loss (%EWL) vs. 58%EWL, p = 0.002). Among post-COVID HT and LT cohorts, previously seen disparities in complications were no longer seen. Finally, there were no differences in weight or follow-up rates between post-COVID HT and LT. CONCLUSIONS: Post-COVID changes to MBS care have resulted in improved short-term outcomes and reduced disparities for patients of lower SES. Further studies are needed to identify these positive factors to perpetuate practice patterns that optimize care for patients of all socioeconomic status.

3.
BMC Nurs ; 23(1): 676, 2024 Sep 26.
Artigo em Inglês | MEDLINE | ID: mdl-39322950

RESUMO

BACKGROUND: Climate changes have led to health and environmental risks, so it has become essential to measure climate change literacy among the entire population, especially nursing students. The significant role of nursing students in raising public awareness and future healthcare roles emphasizes assessing the predictors of climate change literacy among nursing students. AIMS: This study seeks to identify the predictors of climate change literacy among nursing students in A Multi-Site Survey. DESIGN: A multi-site descriptive cross-sectional study adheres to the guidelines outlined in A Consensus-Based Checklist for Reporting Survey Studies collected for five months, from the 1st of July 2023 to November 2023. The study participants comprise 10,084 nursing students from all 27 governments in Egypt. The researcher used the Predictors of Nursing Students' Climate Change Literacy scale in this study. Data was collected, with 25 min average time to complete. Backward multiple linear regression was used to identify these predictors. RESULTS: In the current study, nursing students demonstrated a moderate understanding of climate science (mean score 14.38), communication and advocacy skills (mean score 14.41), and knowledge of adaptation and mitigation strategies (mean score 13.33). Climate health impacts (mean score 17.72) emerged as the domain with the highest level of knowledge. No significant differences in climate literacy were observed across diverse student backgrounds (all p-values were > 0.05). Perceived faculty knowledge of climate change positively correlated with all four domains of climate literacy and emerged as a significant predictor in multiple linear regression analyses (all p-values were < 0.001). IMPLICATION: While our findings highlight significant predictors of climate literacy, it is essential to recognize that these results identify associations rather than causal relationships. Based on these associations, it is recommended that nursing professionals be equipped with comprehensive knowledge of climate adaptation strategies to better advocate for and implement effective public health measures.

4.
BMC Nurs ; 23(1): 674, 2024 Sep 26.
Artigo em Inglês | MEDLINE | ID: mdl-39322958

RESUMO

BACKGROUND: Organizational agility is the cornerstone of the complex dynamics for the success of healthcare organizations and the sustenance of nurses' career planning and professional development. AIM: Assess the organizational agility and the extent of nurses' career planning. It also sought to investigate the association between the two and the intermediating function that nurses` grit plays in this association. DESIGN: A cross-sectional descriptive design following STROBE guidelines was carried out. METHODS AND TOOLS: Data were collected from 300 nurses who made up the entire population sample that we used (a judgmental non-probability sampling technique) working across all in-patient care units at Itay El-Baroud General Hospital, in El Behaira governorate, using structured questionnaires as follows: the organizational agility questionnaire, the career planning scale, and the grit scale. The sociodemographic characteristics of the studied nurses were also collected. Statistical analyses were used to analyze the data, including ANOVA, Pearson correlation, and SEM, to determine whether career development may act as a mediator between organizational agility and the nurses' career planning. RESULTS: Rendering the findings of this study, more than half of nurses have a high perception regarding organizational agility and career planning. In contrast, the majority of them have a moderate perception regarding grit. In addition, there is a statistically high significant relationship between organizational agility and career planning. Also, there is a statistically high significant relationship between organizational agility and grit. There is a statistically high significant relationship between career planning and grit. CONCLUSION: The statistically substantial correlations among grit, career planning, and organizational agility demonstrate how interrelated they are. This implies that encouraging organizational flexibility and effective career planning techniques may have a good impact on nurses' resilience, which would ultimately result in a workforce of nurses who are more resilient and engaged. Additional investigation into the precise mechanisms behind these associations may yield important information for improving nurse wellbeing and retention. NURSING IMPLICATIONS: According to this study, putting organizational agility and career planning first can have a good impact on nurses' grit, which will make them more resilient and engaged workers. To encourage flexibility and growth among nurses, healthcare institutions should make training investments, provide clear career tracks, and support work-life balance. More investigation into the precise mechanisms underlying these connections may yield insightful information that improves nurse well-being and retention. The importance of organizational agility in creating a supportive work environment for nurses' career growth should be acknowledged by healthcare companies. This can lead to increased job satisfaction and lower turnover.

5.
BMC Nurs ; 23(1): 675, 2024 Sep 26.
Artigo em Inglês | MEDLINE | ID: mdl-39322967

RESUMO

BACKGROUND: Since nurses are at the frontline of healthcare delivery, their actions and understanding of the environment have a big impact on how long healthcare systems can last. It is essential to comprehend the elements that impact nurses' sustainability consciousness to encourage ecologically conscious actions in the healthcare industry. AIM: This study aimed to explore the relationship between pro-social leader behaviors and nurses' sustainability consciousness and testify to the mediating role of organizational culture in this relationship. DESIGN: A cross-sectional descriptive correlational design by STROBE criteria was used. METHODS AND TOOLS: An approach to a judgmental non-probability sampling technique was employed to obtain data from 350 nurses in an Egyptian hospital. Three measurement surveys were employed: Organizational Culture Survey, Prosociality Scale, and, Sustainability Consciousness Questionnaire (SCQ-S). Relationships were shown using structural equation modeling and descriptive and inferential statistics. RESULTS: 53.4% of nurses have high perceptions of organizational culture, and the majority of nurses (85.7%) have high perceptions of prosocial leader behaviors. Furthermore, 60.9% of nurses have high perceptions of sustainability consciousness. Additionally, Prosocial leader behaviors positively correlated with organizational culture (r = 0.129) and nurses' sustainability consciousness (r = 0.274). The indirect effect of prosocial leader behaviors on nurses' sustainability consciousness through organizational culture is calculated by multiplying the coefficients of both direct effects (0.129 * 0.159 = 0.811). This means that for each unit increase in prosocial leader behaviors, we would expect a 0.811 unit increase in nurses' sustainability consciousness through the mediating effect of organizational culture. The model appears to match the data well based on the model fit parameters (CFI = 1.000, IFI = 1.000, RMSEA = 0.114). CONCLUSIONS: The study highlights the impact of pro-social leader behaviors on nurses' sustainability consciousness through the organizational culture as a mediating factor. NURSING IMPLICATIONS: Findings from this research can promote environmental stewardship and sustainable practices in the healthcare sector by illuminating the elements that can encourage and support a sustainability-oriented mindset among nurses. To promote a more sustainable future for the nursing profession, the findings can guide activities in nursing education, corporate culture transformation, and leadership development.

6.
CNS Neurosci Ther ; 30(9): e70025, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39228080

RESUMO

AIMS: The study aimed to evaluate the potential benefits of luteolin treatment in Huntington's disease (HD), an inherited progressive neurodegenerative disorder. METHODS: HD N171-82Q transgenic and WT mice received luteolin or vehicle for treatment at 6 weeks of age. The mice's body weight changes and survival rates were monitored throughout the study, and a series of motor functional tests were conducted. Serum level of the marker NfL was also determined. Immunohistochemical staining and western blotting were utilized to assess the expression of huntingtin aggregates. RESULTS: Luteolin treatment enhanced survival and prevented weight loss in HD mice compared to the vehicle-treated HD group. Furthermore, the luteolin-treated HD mice exhibited enhanced motor coordination and balance and significantly reduced motor dysfunction. Also, luteolin decreased serum NfL levels in HD mice. Notably, the accumulation of huntingtin aggregates was significantly reduced in the brain's cortex, hippocampus, and striatum of luteolin-treated HD mice compared to the vehicle-treated HD group. CONCLUSION: Luteolin holds promise as a therapeutic agent for improving survival outcomes, managing motor dysfunction, and reducing huntingtin aggregates in HD. The findings are of significance as currently, there are no approved therapeutic interventions that reverse HD pathology or slow down its progression.


Assuntos
Modelos Animais de Doenças , Proteína Huntingtina , Doença de Huntington , Luteolina , Camundongos Transgênicos , Animais , Doença de Huntington/tratamento farmacológico , Doença de Huntington/metabolismo , Luteolina/farmacologia , Luteolina/uso terapêutico , Camundongos , Proteína Huntingtina/genética , Encéfalo/efeitos dos fármacos , Encéfalo/metabolismo , Proteínas de Neurofilamentos/metabolismo , Masculino , Atividade Motora/efeitos dos fármacos , Humanos
7.
Front Pharmacol ; 15: 1414790, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39246660

RESUMO

Cancer prevention is currently envisioned as a molecular-based approach to prevent carcinogenesis in pre-cancerous stages, i.e., dysplasia and carcinoma in situ. Cancer is the second-leading cause of mortality worldwide, and a more than 61% increase is expected by 2040. A detailed exploration of cancer progression pathways, including the NF-kß signaling pathway, Wnt-B catenin signaling pathway, JAK-STAT pathway, TNF-α-mediated pathway, MAPK/mTOR pathway, and apoptotic and angiogenic pathways and effector molecules involved in cancer development, has been discussed in the manuscript. Critical evaluation of these effector molecules through molecular approaches using phytomolecules can intersect cancer formation and its metastasis. Manipulation of effector molecules like NF-kß, SOCS, ß-catenin, BAX, BAK, VEGF, STAT, Bcl2, p53, caspases, and CDKs has played an important role in inhibiting tumor growth and its spread. Plant-derived secondary metabolites obtained from natural sources have been extensively studied for their cancer-preventing potential in the last few decades. Eugenol, anethole, capsaicin, sanguinarine, EGCG, 6-gingerol, and resveratrol are some examples of such interesting lead molecules and are mentioned in the manuscript. This work is an attempt to put forward a comprehensive approach to understanding cancer progression pathways and their management using effector herbal molecules. The role of different plant metabolites and their chronic toxicity profiling in modulating cancer development pathways has also been highlighted.

8.
Life Sci ; 354: 122950, 2024 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-39128821

RESUMO

Behçet's Disease (BD) is an intricate medical puzzle, captivating researchers with its enigmatic pathogenesis. This complex ailment, distinguished by recurrent mouth and genital lesions, eye irritation, and skin injuries, presents a substantial obstacle to therapeutic research. This review explores the complex interaction of microRNAs (miRNAs) with BD, highlighting their crucial involvement in the disease's pathophysiology. miRNAs, recognized for regulatory influence in diverse biological processes, hold a pivotal position in the molecular mechanisms of autoimmune diseases, such as BD. The exploration begins with examining miRNA biogenic pathways and functions, establishing a foundational understanding of their regulatory mechanisms. Shifting to the molecular landscape governing BD, the review highlights miRNA-mediated impacts on critical signaling pathways like Notch, nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), and protein kinase B (AKT)/mammalian target of rapamycin (mTOR), offering insights into intricate pathophysiological mechanisms. Dissecting the immunological landscape reveals the profound influence of miRNAs on BD, shedding light on the intricate modulation of immune responses and offering novel perspectives on disease etiology and progression. Beyond molecular intricacies, the review explores the clinical relevance of miRNAs in BD, emphasizing their potential as diagnostic and prognostic indicators. The discussion extends to the promising realm of miRNA-based therapeutic interventions, highlighting their potential in alleviating symptoms and altering disease progression. This comprehensive review, serving as a valuable resource for researchers, clinicians, and stakeholders, aims to decipher the intricate molecular tapestry of BD and explore the therapeutic potential of miRNAs.


Assuntos
Síndrome de Behçet , MicroRNAs , Síndrome de Behçet/terapia , Síndrome de Behçet/genética , Síndrome de Behçet/diagnóstico , Humanos , MicroRNAs/genética , Transdução de Sinais , Animais , Biomarcadores/metabolismo
9.
Chirurgie (Heidelb) ; 2024 Aug 16.
Artigo em Inglês | MEDLINE | ID: mdl-39150539

RESUMO

BACKGROUND: Supra-sphincteric and high trans-sphincteric fistula are very challenging procedures for both the patient and the surgeon. We aimed to evaluate the outcomes of anal sphincter repair in the management of supra-sphincteric and high trans-sphincteric fistula-in-ano in terms of postoperative wound infection, bleeding, incontinence to flatus or stool, and recurrence within 1 year. PATIENTS AND METHODS: This single-center prospective cohort trial conducted from June 2020 to December 2023 at the Ain Shams University Hospitals included 20 patients who presented with supra-sphincteric or high trans-sphincteric fistula. There were nine (45%) male and 11 (55%) female patients, with a mean age of 41.5 years postoperatively. RESULTS: The mean duration of the procedure was 90.3 min (SD ± 11.9). During the first 2 weeks, ten (50%) patients scored their postoperative pain as mild, eight (40%) as moderate, and two (10%) as severe. Wound infection occurred in two (10%) patients and postoperative bleeding in three (15%) patients in the form of spotting after defecation. There were no cases of incontinence to stool. However, there were three (15%) cases of incontinence to gases. There were two cases (10%) of recurrence at the 1­year follow-up. Postoperative patient satisfaction was assessed on a 5­point Likert scale after 2 weeks: One patient (5%) was very dissatisfied, three (15%) patients were dissatisfied, and two (10%) patients were unsure, while five (25%) patients were satisfied and nine (45%) were very satisfied. CONCLUSION: Immediate sphincter repair in supra-sphincteric and high trans-sphincteric fistula through a lay-open procedure was determined to be safe, easier than classic operations, and associated with a low incidence of recurrence at the 1­year follow-up and a high quality of life.

10.
Cells ; 13(15)2024 Jul 24.
Artigo em Inglês | MEDLINE | ID: mdl-39120276

RESUMO

Circular RNAs (circRNAs) are cardinal players in numerous physiological and pathological processes. CircRNAs play dual roles as tumor suppressors and oncogenes in different oncological contexts, including hepatocellular carcinoma (HCC). Their roles significantly impact the disease at all stages, including initiation, development, progression, invasion, and metastasis, in addition to the response to treatment. In this review, we discuss the biogenesis and regulatory functional roles of circRNAs, as well as circRNA-protein-mRNA ternary complex formation, elucidating the intricate pathways tuned by circRNAs to modulate gene expression and cellular processes through a comprehensive literature search, in silico search, and bioinformatics analysis. With a particular focus on the interplay between circRNAs, epigenetics, and HCC pathology, the article sets the stage for further exploration of circRNAs as novel investigational theranostic agents in the dynamic realm of HCC.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Medicina de Precisão , RNA Circular , RNA não Traduzido , Carcinoma Hepatocelular/genética , Carcinoma Hepatocelular/patologia , Carcinoma Hepatocelular/metabolismo , Humanos , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/patologia , Neoplasias Hepáticas/metabolismo , RNA Circular/genética , RNA Circular/metabolismo , Medicina de Precisão/métodos , RNA não Traduzido/genética , RNA não Traduzido/metabolismo , Simulação por Computador , Regulação Neoplásica da Expressão Gênica , Biologia Computacional/métodos
11.
Nanomaterials (Basel) ; 14(15)2024 Aug 03.
Artigo em Inglês | MEDLINE | ID: mdl-39120413

RESUMO

As an environmentally friendly material, biochar is increasingly being utilized in the field of heat transfer and thermal conduction. In this study, nano-biochar was prepared from high-pressure homogenization (HPH) using sesame stalks as the raw material. It was incorporated into ethylene glycol (EG) and its dispersion stability, viscosity, and thermal conductivity were investigated. The nano-biochar was stably dispersed in EG for 28 days. When the concentration of the nano-biochar added to EG was less than 1%, the impact on viscosity was negligible. The addition of 5 wt.% nano-biochar to EG improved the thermal conductivity by 6.72%, which could be attributed to the graphitized structure and Brownian motion of the nano-biochar. Overall, nano-biochar has the potential to be applied in automotive thermal management.

12.
Int Med Case Rep J ; 17: 751-755, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39171203

RESUMO

Congenital rubella syndrome (CRS) is a serious condition with a high rate of morbidity. It is currently a rare disorder, especially in developed countries, because of universal vaccination campaigns. However, it remains a public health concern in developing countries. Here, we report a case of congenital rubella syndrome in a mother who did not receive any prenatal care or had a known history of vaccination. He is a term male infant, and the infant's positive rubella IgM confirmed the diagnosis. The baby had a bilateral cataract, convulsions, Patent ductus arteriosus (PDA)-related cardiomegaly, and bilateral hearing loss. The only known preventive measure for congenital rubella syndrome is vaccination.

13.
BMJ Glob Health ; 8(Suppl 4)2024 Aug 09.
Artigo em Inglês | MEDLINE | ID: mdl-39122445

RESUMO

Routine assessment of health facility capacity to provide abortion and post-abortion care can inform policy and programmes to expand access and improve quality. Since 2018, abortion and/or post-abortion care have been integrated into two WHO health facility assessment tools: the Service Availability and Readiness Assessment and the Harmonised Health Facility Assessment. We discuss lessons learnt through experiences integrating abortion into these standardised tools. Our experiences highlight the feasibility of including abortion in health facility assessments across a range of legal contexts. Factors facilitating the integration of abortion include cross-country collaboration and experience sharing, timely inputs into tool adaptations, clear leadership, close relationships among key stakeholders as in assessment coordination groups, use of locally appropriate terminology to refer to abortion and reference to national policies and guidelines. To facilitate high-quality data collection, we identify considerations around question sequencing in tool design, appropriate terminology and the need to balance the normalisation of abortion with adequate sensitisation and education of data collectors. To facilitate appropriate and consistent analysis, future work must ensure adequate disaggregation of recommended and non-recommended abortion methods, alignment with national guidelines and development of a standardised approach for measuring abortion service readiness. Measurement of abortion service availability and readiness should be a routine practice and a standardised component of health facility assessment tools. Evidence generated by health facility assessments that include abortion monitoring can guide efforts to expand access to timely and effective care and help normalise abortion as a core component of sexual and reproductive healthcare.


Assuntos
Aborto Induzido , Acessibilidade aos Serviços de Saúde , Organização Mundial da Saúde , Humanos , Feminino , Gravidez , Instalações de Saúde/normas
14.
Expert Opin Ther Targets ; 28(8): 669-687, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39136530

RESUMO

INTRODUCTION: Uterine fibroids, the most common nonmalignant tumors affecting the female genital tract, are a significant medical challenge. This article focuses on the most recent studies that attempted to identify novel non-hormonal therapeutic targets and strategies in UF therapy. AREAS COVERED: This review covers the analysis of the pharmacological and biological mechanisms of the action of natural substances and the role of the microbiome in reference to UFs. This study aimed to determine the potential role of these compounds in UF prevention and therapy. EXPERT OPINION: While there are numerous approaches for treating UFs, available drug therapies for disease control have not been optimized yet. This review highlights the biological potential of vitamin D, EGCG and other natural compounds, as well as the microbiome, as promising alternatives in UF management and prevention. Although these substances have been quite well analyzed in this area, we still recommend conducting further studies, particularly randomized ones, in the field of therapy with these compounds or probiotics. Alternatively, as the quality of data continues to improve, we propose the consideration of their integration into clinical practice, in alignment with the patient's preferences and consent.


Assuntos
Leiomioma , Neoplasias Uterinas , Humanos , Leiomioma/tratamento farmacológico , Feminino , Animais , Neoplasias Uterinas/tratamento farmacológico , Terapia de Alvo Molecular , Microbiota/efeitos dos fármacos , Probióticos/farmacologia , Probióticos/administração & dosagem , Desenvolvimento de Medicamentos , Catequina/farmacologia , Catequina/análogos & derivados , Catequina/administração & dosagem , Vitamina D/farmacologia
15.
Molecules ; 29(16)2024 Aug 07.
Artigo em Inglês | MEDLINE | ID: mdl-39202829

RESUMO

Microalgae-mediated nanoparticle (NP) biosynthesis is a promising green synthesis method that overcomes the challenges of conventional synthesis methods. The novel Desmochloris edaphica strain CCAP 6006/5 was isolated, purified, and characterized morphologically and genetically. GC-MS analysis of the algal biomass (DBio) phytochemicals showed the abundance for elaidic acid (18.36%) and monoolein (17.37%). UV-VIS spectroscopy helped analyze the effects of the AgNO3 concentration, algal/silver nitrate ratio, temperature, reaction time, illumination, and pH on AgNP synthesis. DBio extract or cell-free medium (DSup) of D. edaphica successfully biosynthesized small silver NPs (AgNPs), namely, DBio@AgNPs and DSup@AgNPs, under optimum reaction conditions. TEM and SEM showed a quasi-spherical shape, with average diameters of 15.0 ± 1.0 nm and 12.0 ± 0.8 nm, respectively. EDx and mapping analyses revealed that silver was the main element, the NP hydrodynamic diameters were 77.9 and 62.7 nm, and the potential charges were -24.4 and -25.8 mV, respectively. FTIR spectroscopy revealed that the DBio@AgNPs, and DSup@AgNPs were coated with algal functional groups, probably derived from algal proteins, fatty acids, or polysaccharides, representing reductant and stabilizer molecules from the synthesis process. They showed significant anticancer activity against breast cancer cells (MCF-7), low toxicity against normal kidney cells (Vero), and potent inhibitory activity against Staphylococcus aureus, Bacillus subtilis, and Shigella flexneri. D. edaphica is a novel biomachine for synthesizing small, stable and potent therapeutic AgNPs.


Assuntos
Antibacterianos , Antineoplásicos , Nanopartículas Metálicas , Prata , Nanopartículas Metálicas/química , Prata/química , Prata/farmacologia , Antibacterianos/farmacologia , Antibacterianos/química , Antineoplásicos/farmacologia , Antineoplásicos/química , Antineoplásicos/síntese química , Humanos , Química Verde , Testes de Sensibilidade Microbiana , Microalgas/química , Linhagem Celular Tumoral , Células MCF-7 , Staphylococcus aureus/efeitos dos fármacos
16.
Int J Biol Macromol ; 278(Pt 4): 135035, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-39182864

RESUMO

Site-directed protein immobilization allows the homogeneous orientation of proteins while maintaining high activity, which is advantageous for various applications. In this study, the use of SpyCatcher/SpyTag technology and magnetic nickel ferrite (NiFe2O4 NPs) nanoparticles were used to prepare a site-directed immobilization of BsUGT2m from Bacillus subtilis and AtSUSm from Arabidopsis thaliana for enhancing curcumin glucoside production with UDP-glucose regeneration from sucrose and UDP. The immobilization of self-assembled multienzyme complex (MESAs) enzymes were characterized for immobilization parameters and stability, including thermal, pH, storage stability, and reusability. The immobilized MESAs exhibited a 2.5-fold reduction in UDP consumption, enhancing catalytic efficiency. Moreover, the immobilized MESAs demonstrated high storage and temperature stability over 21 days at 4 °C and 25 °C, outperforming their free counterparts. Reusability assays showed that the immobilized MESAs retained 78.7 % activity after 10 cycles. Utilizing fed-batch technology, the cumulative titer of curcumin 4'-O-ß-D-glucoside reached 6.51 mM (3.57 g/L) and 9.45 mM (5.18 g/L) for free AtSUSm/BsUGT2m and immobilized MESAs, respectively, over 12 h. This study demonstrates the efficiency of magnetic nickel ferrite nanoparticles in co-immobilizing enzymes, enhancing biocatalysts' catalytic efficiency, reusability, and stability.


Assuntos
Biocatálise , Curcumina , Enzimas Imobilizadas , Uridina Difosfato Glucose , Enzimas Imobilizadas/química , Enzimas Imobilizadas/metabolismo , Uridina Difosfato Glucose/química , Uridina Difosfato Glucose/metabolismo , Curcumina/química , Bacillus subtilis/enzimologia , Glucosídeos/química , Glucosídeos/metabolismo , Temperatura , Estabilidade Enzimática , Concentração de Íons de Hidrogênio , Arabidopsis/enzimologia , Níquel/química , Nanopartículas de Magnetita/química
17.
Emerg Microbes Infect ; 13(1): 2396874, 2024 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-39193629

RESUMO

We detected highly pathogenic avian influenza A(H5N1) virus in wild rats collected from a rural area in Giza, Egypt, near poultry farms, markets, and backyard flocks. Sequence and phylogenetic analyses indicated that the virus from the rats belonged to clade 2.3.4.4b, which has been the predominant virus genotype circulating in Egypt and worldwide since 2021-2022. Active surveillance of avian influenza viruses in wild and domestic mammals is recommended to prevent further spread to mammals and humans.


Assuntos
Animais Selvagens , Virus da Influenza A Subtipo H5N1 , Infecções por Orthomyxoviridae , Filogenia , Animais , Egito/epidemiologia , Virus da Influenza A Subtipo H5N1/genética , Virus da Influenza A Subtipo H5N1/classificação , Virus da Influenza A Subtipo H5N1/isolamento & purificação , Virus da Influenza A Subtipo H5N1/patogenicidade , Ratos/virologia , Animais Selvagens/virologia , Infecções por Orthomyxoviridae/virologia , Infecções por Orthomyxoviridae/veterinária , Infecções por Orthomyxoviridae/epidemiologia , Genótipo , Influenza Aviária/virologia , Influenza Aviária/epidemiologia
18.
Sensors (Basel) ; 24(16)2024 Aug 08.
Artigo em Inglês | MEDLINE | ID: mdl-39204840

RESUMO

This comprehensive review delves into the forefront of biosensor technologies and their critical roles in disease biomarker detection and therapeutic drug monitoring. It provides an in-depth analysis of various biosensor types and applications, including enzymatic sensors, immunosensors, and DNA sensors, elucidating their mechanisms and specific healthcare applications. The review highlights recent innovations such as integrating nanotechnology, developing wearable devices, and trends in miniaturisation, showcasing their transformative potential in healthcare. In addition, it addresses significant sensitivity, specificity, reproducibility, and data security challenges, proposing strategic solutions to overcome these obstacles. It is envisaged that it will inform strategic decision-making, drive technological innovation, and enhance global healthcare outcomes by synthesising multidisciplinary insights.


Assuntos
Técnicas Biossensoriais , Monitoramento de Medicamentos , Técnicas Biossensoriais/métodos , Humanos , Monitoramento de Medicamentos/métodos , Nanotecnologia/métodos , Dispositivos Eletrônicos Vestíveis , Biomarcadores/análise , Atenção à Saúde
19.
Surg Infect (Larchmt) ; 25(7): 513-520, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38957977

RESUMO

Background: Post-partum infection is a major contributor to maternal mortality and is responsible for approximately 10% of maternal fatalities worldwide. The risk of infection is substantially higher in cesarean section procedures. Approximately 8% of women who undergo cesarean sections are susceptible to infection. Although the body of evidence supporting the regular pre-operative utilization of prophylactic antibiotic treatment is steadily expanding, its usefulness in cesarean sections has not yet been standardized, and post-partum infection is still a serious medical challenge. We aimed to retrospectively assess the prophylactic effectiveness of cefazolin in combination with other antibiotic agents in cesarean sections. Materials and Methods: Both uni-variable and multi-variable analyses were conducted to identify factors that may affect cefazolin pre-operative antibiotic prophylaxis in elective cesarean section operations. The uni-variable analysis included timing of administration, operation duration, body mass index (BMI), and wound type. A multi-variable logistic regression model was then created to determine which variables provide independent information in the context of other variables. Results: Time of administration did not affect prophylactic cefazolin efficacy. However, prophylactic cefazolin was 1.43 and 1.77 times more effective when the operation lasted for 45 minutes or more, compared with operations that were shorter than 45 minutes. Patients with a BMI ranging from 18 to 29 kg/m2 showed increased efficacy of prophylactic cefazolin compared with obese patients with a BMI exceeding 30 kg/m2. The effectiveness of prophylactic cefazolin decreased by 95% in patients with clean-contaminated surgical incisions compared with those with clean surgical incisions. Conclusions: Our findings demonstrate that administering pre-operative prophylactic antibiotic agents to women undergoing cesarean section resulted in a reduction in post-partum infections, thereby reducing maternal mortality. Furthermore, optimal timing of administration, re-dosing if necessary, length of prophylactic medication, and dosing adjustments for obese patients are crucial factors in preventing surgical site infections and promoting antimicrobial stewardship.


Assuntos
Antibacterianos , Antibioticoprofilaxia , Cefazolina , Cesárea , Infecção da Ferida Cirúrgica , Humanos , Cefazolina/uso terapêutico , Cefazolina/administração & dosagem , Estudos Retrospectivos , Antibioticoprofilaxia/métodos , Feminino , Cesárea/efeitos adversos , Antibacterianos/administração & dosagem , Antibacterianos/uso terapêutico , Adulto , Infecção da Ferida Cirúrgica/prevenção & controle , Gravidez , Cuidados Pré-Operatórios/métodos
20.
Vet Res Forum ; 15(6): 267-274, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39035475

RESUMO

Staphylococcus aureus is one of the most common causes of mastitis worldwide. This study aimed to determine the prevalence and antimicrobial resistance (AMR) patterns of S. aureus in mastitic milk samples collected from camel farms in Matrouh Governorate, Egypt. A total of 200 mastitic camel milk samples were evaluated for S. aureus using both conventional culture-based and molecular-based methods. Antibiotic susceptibility testing of S. aureus isolates was conducted using disc diffusion and agar dilution methods, with antibiotic resistance genes identified through polymerase chain reaction with specific primers. Out of samples tested, 60 (30.00%) were positive for S. aureus. The isolates displayed the highest of resistance against piperacillin-tazobactam (55.00%) followed by trimethoprim- sulfamethoxazole (45.00%) and amoxicillin (40.00%). Half of the isolates were multidrug-resistant (MDR). The AMR genes included methicillin-resistant gene (mecA), ß-lactamase gene (blaZ), tetracycline resistance gene (tetK), erythromycin resistance gene (ermB) and vancomycin resistant gene (vanA) were detected in 100%, 100%, 95.00%, 90.00% and 20.00% of the isolates, respectively. In conclusion, the presence of MDRS aureus as a cause of clinical camel mastitis is a significant veterinary and public health concern. These findings highlight the importance of proper antibiotic use in Egyptian camel farms and the need for molecular techniques to fully understand the genetic profile of antimicrobial-resistant S. aureus isolates.

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