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1.
Brief Bioinform ; 25(1)2023 11 22.
Artigo em Inglês | MEDLINE | ID: mdl-38040490

RESUMO

RNA biology has risen to prominence after a remarkable discovery of diverse functions of noncoding RNA (ncRNA). Most untranslated transcripts often exert their regulatory functions into RNA-RNA complexes via base pairing with complementary sequences in other RNAs. An interplay between RNAs is essential, as it possesses various functional roles in human cells, including genetic translation, RNA splicing, editing, ribosomal RNA maturation, RNA degradation and the regulation of metabolic pathways/riboswitches. Moreover, the pervasive transcription of the human genome allows for the discovery of novel genomic functions via RNA interactome investigation. The advancement of experimental procedures has resulted in an explosion of documented data, necessitating the development of efficient and precise computational tools and algorithms. This review provides an extensive update on RNA-RNA interaction (RRI) analysis via thermodynamic- and comparative-based RNA secondary structure prediction (RSP) and RNA-RNA interaction prediction (RIP) tools and their general functions. We also highlighted the current knowledge of RRIs and the limitations of RNA interactome mapping via experimental data. Then, the gap between RSP and RIP, the importance of RNA homologues, the relationship between pseudoknots, and RNA folding thermodynamics are discussed. It is hoped that these emerging prediction tools will deepen the understanding of RNA-associated interactions in human diseases and hasten treatment processes.


Assuntos
Biologia Computacional , RNA , Humanos , RNA/metabolismo , Biologia Computacional/métodos , RNA não Traduzido/genética , Genômica , Dobramento de RNA , Conformação de Ácido Nucleico , Algoritmos
2.
Crit Rev Food Sci Nutr ; : 1-26, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38619217

RESUMO

Inflammatory cascades of the dysregulated inflammatory pathways in COVID-19 can cause excessive production of pro-inflammatory cytokines and chemokines leading to cytokine storm syndrome (CSS). The molecular cascades involved in the pathways may be targeted for discovery of new anti-inflammatory agents. Many plant extracts have been used clinically in the management of COVID-19, however, their immunosuppressive activities were mainly investigated based on in silico activity. Dietary flavonoids of the extracts such as quercetin, luteolin, kaempferol, naringenin, isorhamnetin, baicalein, wogonin, and rutin were commonly identified as responsible for their inhibitory effects. The present review critically analyzes the anti-inflammatory effects and mechanisms of phytochemicals, including dietary compounds against cytokine storm (CS) and hyperinflammation via inhibition of the altered inflammatory pathways triggered by SARS-CoV-2, published since the emergence of COVID-19 in December 2019. Only a few phytochemicals, mainly dietary compounds such as nanocurcumin, melatonin, quercetin, 6-shagoal, kaempferol, resveratrol, andrographolide, and colchicine have been investigated either in in silico or preliminary clinical studies to evaluate their anti-inflammatory effects against COVID-19. Sufficient pre-clinical studies on safety and efficacy of anti-inflammatory effects of the phytochemicals must be performed prior to proper clinical studies to develop them into therapeutic adjuvants in the prevention and treatmemt of COVID-19 symptoms.

3.
Biol Res ; 57(1): 32, 2024 May 27.
Artigo em Inglês | MEDLINE | ID: mdl-38797855

RESUMO

BACKGROUND: The liver serves as a metabolic hub within the human body, playing a crucial role in various essential functions, such as detoxification, nutrient metabolism, and hormone regulation. Therefore, protecting the liver against endogenous and exogenous insults has become a primary focus in medical research. Consequently, the potential hepatoprotective properties of multiple 4-phenyltetrahydroquinolines inspired us to thoroughly study the influence of four specially designed and synthesized derivatives on carbon tetrachloride (CCl4)-induced liver injury in rats. METHODS AND RESULTS: Seventy-seven Wistar albino male rats weighing 140 ± 18 g were divided into eleven groups to investigate both the toxicity profile and the hepatoprotective potential of 4-phenyltetrahydroquinolines. An in-vivo hepatotoxicity model was conducted using CCl4 (1 ml/kg body weight, a 1:1 v/v mixture with corn oil, i.p.) every 72 h for 14 days. The concurrent treatment of rats with our newly synthesized compounds (each at a dose of 25 mg/kg body weight, suspended in 0.5% CMC, p.o.) every 24 h effectively lowered transaminases, preserved liver tissue integrity, and mitigated oxidative stress and inflammation. Moreover, the histopathological examination of liver tissues revealed a significant reduction in liver fibrosis, which was further supported by the immunohistochemical analysis of α-SMA. Additionally, the expression of the apoptotic genes BAX and BCL2 was monitored using real-time PCR, which showed a significant decrease in liver apoptosis. Further investigations unveiled the ability of the compounds to significantly decrease the expression of autophagy-related proteins, Beclin-1 and LC3B, consequently inhibiting autophagy. Finally, our computer-assisted simulation dockingonfirmed the obtained experimental activities. CONCLUSION: Our findings suggest that derivatives of 4-phenyltetrahydroquinoline demonstrate hepatoprotective properties in CCl4-induced liver damage and fibrosis in rats. The potential mechanism of action may be due to the inhibition of autophagy in liver cells.


Assuntos
Autofagia , Tetracloreto de Carbono , Doença Hepática Induzida por Substâncias e Drogas , Quinolinas , Ratos Wistar , Animais , Autofagia/efeitos dos fármacos , Masculino , Doença Hepática Induzida por Substâncias e Drogas/prevenção & controle , Doença Hepática Induzida por Substâncias e Drogas/tratamento farmacológico , Ratos , Quinolinas/farmacologia , Estresse Oxidativo/efeitos dos fármacos , Fígado/efeitos dos fármacos , Fígado/patologia , Fígado/metabolismo , Substâncias Protetoras/farmacologia , Apoptose/efeitos dos fármacos , Modelos Animais de Doenças
4.
Clin Exp Dermatol ; 2024 Mar 12.
Artigo em Inglês | MEDLINE | ID: mdl-38469732

RESUMO

BACKGROUND: Psoriasis is a common chronic, immune-mediated inflammatory skin disease. Despite the availability of several systemic therapeutic agents, treatment of psoriasis remains a challenge because of the associated adverse effects and/or the financial burden of these medications, given the chronicity of the disease. AIM: We aimed to compare the efficacy and safety of combined pulse azathioprine (AZA) and low dose methotrexate versus conventional dose of methotrexate (MTX) in patients with chronic plaque psoriasis. METHODS: In this randomized controlled trial, 67 patients with moderate to severe plaque psoriasis were randomized into 2 groups, receiving either combined pulse AZA (300 mg weekly dose) and low dose MTX (10 mg weekly) or conventional dose MTX (0.3 mg/kg/week) for 16 weeks. Patients were assessed for treatment response using PASI score and for the development of any adverse effects at weeks 12 and 16 and for a further 3 months after stoppage of treatment. RESULTS: A statistically significant higher proportion of the patients receiving combined pulse AZA and low dose MTX achieved PASI 90 and PASI 100 at week 12 and PASI 100 at week 16, compared to those receiving conventional dose of MTX monotherapy. No serious adverse events were reported during the entire study period in the two groups. CONCLUSION: Combination therapy using pulse AZA and low dose MTX can be an efficacious treatment for moderate to severe plaque psoriasis with a relatively good safety profile.

5.
Paediatr Anaesth ; 34(2): 112-120, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-37927199

RESUMO

BACKGROUND: During scoliosis surgery, motor evoked potentials (MEP), and somatosensory evoked potentials (SSEP) have been reported to be affected by the use of higher doses of anesthetic agents. Dexmedetomidine, a sympatholytic agent, an alpha-2 receptor agonist, has been used as an adjunctive agent to lower anesthetic dose. However, there is conflicting evidence regarding the effects of dexmedetomidine on the intraoperative neurophysiological monitoring of MEP and SSEP during surgery, particularly among pediatric patients. OBJECTIVES: This systematic review aimed to determine whether, during spinal fusion surgery in pediatric patients with scoliosis, dexmedetomidine alters MEP amplitude or SSEP latency and amplitude and, if so, whether different doses of dexmedetomidine display different effects (PROSPERO registration number CRD42022300562). METHODS: We searched PubMed, Scopus, and Cochrane Library on January 1, 2022 and included randomized controlled trials, observational cohort and case-control studies and case series investigating dexmedetomidine in the population of interest and comparing against a standardized anesthesia regimen without dexmedetomidine or comparing multiple doses of dexmedetomidine. Animal and in vitro studies and conference abstracts were excluded. RESULTS: We found substantial heterogeneity in the risk of bias (per Cochrane-preferred tools) of the included articles (n = 5); results are summarized without meta-analysis. Articles with the lowest risk of bias indicated that dexmedetomidine was associated with MEP loss and that higher doses of dexmedetomidine increased risk. In contrast, articles reporting no association between dexmedetomidine and MEP loss suffered from higher risk of bias, including suspected or confirmed problems with confounding, outcome measurement, participant selection, results reporting, and lack of statistical transparency and power. CONCLUSION: Given the limitations of the studies available in the literature, it would be advisable to conduct rigorous randomized controlled trials with larger sample sizes to assess the effects of dexmedetomidine use of in scoliosis surgery in pediatric patients.


Assuntos
Dexmedetomidina , Monitorização Neurofisiológica Intraoperatória , Escoliose , Humanos , Criança , Monitorização Neurofisiológica Intraoperatória/métodos , Dexmedetomidina/farmacologia , Escoliose/cirurgia , Potenciais Somatossensoriais Evocados/fisiologia , Potencial Evocado Motor/fisiologia , Agonistas de Receptores Adrenérgicos alfa 2/farmacologia , Estudos Retrospectivos
6.
BMC Nurs ; 23(1): 443, 2024 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-38943109

RESUMO

BACKGROUND: The empathic relationship between nursing students and patients allows them to understand and address caring behavior for patients. Appropriate emotional support equips them to overcome the complexities and difficulties inherent in patient care. This support cultivates resilience and self-awareness, enabling students to manage their emotions effectively and establish meaningful connections and caring with their patients. OBJECTIVES: To investigate the role of empathy in the association between emotional support and caring behavior toward patients among intern nursing students at Alexandria and Damanhur University. SUBJECTS: The study subjects were 200 intern nursing students in their internship years of 2022-2023, randomly selected from an equal sample size from Alexandria and Damanhur University, Egypt. TOOLS: A questionnaire of social information& academics from students, the Toronto Empathy Questionnaire, the Caring Dimension Inventory, and the Multidimensional Scale of Perceived Social Support are used to collect participants' data. RESULTS: Empathy was associated with caring behavior and emotional support among nursing students (P < 0.001), and higher levels of empathy indicated increased levels of caring behavior and emotional support. The caring behavior significantly increased when intern nursing students received more emotional support and among those who were not working in private hospitals (p < 0.001,&p = 0.023 respectively). Empathy acts as a mediating role in the relationship between emotional support and caring behavior. IMPLICATIONS: Implementing strategies to assist interns in navigating challenges and promoting a culture of support can facilitate the cultivation of caring behaviors. Shedding light on the interconnectedness of empathy, emotional support, and caring behavior can inform the design of interventions to strengthen empathy as a pathway to improving patient outcomes. CONCLUSION: Empathy is a mediating factor in the relationship between emotional support and caring behavior. This suggests that interventions promoting empathy may serve as a pathway to enhancing caring behavior among nursing students and strategies for improving patient care outcomes by strengthening empathy skills among healthcare professionals.

7.
BMC Nurs ; 23(1): 238, 2024 Apr 10.
Artigo em Inglês | MEDLINE | ID: mdl-38600487

RESUMO

BACKGROUND: Kinesiophobia could act as a significant barrier against physical activity following cardiac procedures worsening cardiovascular health problems and potentially leading to conditions like hospital-acquired anxiety and depression among patients with cardiovascular disease (CVD). Nurses are the vanguard health care team who can aid patients in taking proactive steps to overcome fear of movement following cardiac procedures. AIM: The overarching aim is to investigate the relationship between kinesiophobia, anxiety and depression, and patients' perception of nursing care. METHOD: A descriptive correlational research design in two rural hospitals, conducted at cardiac intensive care units of Kafr Eldawar Hospital and Damanhur Medical National Institute. Data were collected from 265 nurses, using the following patient-reported outcome measures, the Tampa Scale for Kinesiophobia (TSK), the Hospital Anxiety and Depression Scale (HADS), the Person-Centered Critical Care Nursing Questionnaire (PCCNP) and the patients' demographic and clinical profile. RESULT: A significant negative correlation was found between HADS and PCCNP (r: -0.510, p < 0.001) however, Kinesiophobia was significantly and positively correlated (r: 0.271, p < 0.001). A direct effect of PCCNP in the presence of the mediator was found to be not statistically significant (-0.015, CR = 0.302, p = 0.763). Nonetheless, PCCNP indirectly affects kinesiophobia through HADS (p=-0.099). IMPLICATION FOR NURSING PRACTICE: Customizing individualized cardiac rehabilitation (CR) programs based on the emotional experience of cardiac patients will be conducive to rehabilitation and prognosis for patients, thereby lessening the physical burden and improving their quality of life.

8.
BMC Nurs ; 23(1): 83, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-38303046

RESUMO

BACKGROUND: Carpal tunnel syndrome (CTS) is a prevalent condition characterized by hand pain, tingling, and numbness. The severity of symptoms and functional status in CTS patients may be influenced by perceived stress and how individuals cope with it. However, scarce knowledge exists about the role of coping strategies as moderators in this relationship. Unfolding the role of perceived stress and coping strategies for CTS management will help the nurse to provide comprehensive and tailored nursing care. This will ultimately improve patient comfort, functionality, and quality of life. PURPOSES: This study aimed to examine the role of coping strategies (adaptive and maladaptive) in the relationship between perceived stress and both symptoms severity and function status among those patients. METHOD: We employed a multisite, correlational study design with moderation analysis. The study included 215 patients with CTS from neurosurgery outpatient clinics at three hospitals in Egypt. After obtaining their consent to participate, eligible participants completed anonymous, self-reported measures of perceived stress, the brief COPE inventory, and the Boston Carpal Tunnel Questionnaire. Demographic and biomedical data were also collected. The questionnaire took about 20 min to be completed. The data was collected over six months, starting in February 2023. RESULTS: The results showed that perceived stress, adaptive coping, and maladaptive coping were significant predictors of symptoms severity and functional status. Adaptive coping moderated the relationships between perceived stress and both symptoms severity and function status, while maladaptive coping did not. The interaction between perceived stress and adaptive coping explained a moderate effect on symptoms severity and function status after controlling for the main effects and the covariates. CONCLUSION: This study explored the relationship between perceived stress, coping strategies, and outcomes in patients with CTS. The results indicate that nurses play a vital role in assessing and assisting patients to adopt effective coping strategies to manage perceived stress and alleviate symptoms and functional impairment. Moreover, the findings support the need for psychological interventions that address both perceived stress and coping strategies as a way to enhance the functioning status and quality of life of patients with CTS.

9.
BMC Nurs ; 23(1): 133, 2024 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-38378543

RESUMO

BACKGROUND: Climate change, a pervasive global phenomenon, exerts discernible impacts on the physical, social, and psychological dimensions of well-being. The apprehension surrounding this complex environmental issue has reached a critical juncture, with over 76,000 individuals across more than thirty nations expressing profound levels of concern, characterizing their anxiety as either "very" or "extremely" pronounced. This surge in awareness regarding the potential consequences of climate change has given rise to an emergent and escalating challenge known as climate anxiety. This distinctive form of anxiety manifests through profound feelings of fear, helplessness, and despair elicited by the impending repercussions of climate change. Notably, the intersection of climate anxiety with occupational domains, particularly within the context of Nursing University Colleagues, suggests a nuanced relationship with job engagement, wherein the psychological responses to climate change may influence professional commitment and involvement. AIM OF THE STUDY: To examine the correlation among Climate Anxiety, Environmental Attitude, and Job Engagement among Nursing University Colleagues comprising eight distinct nursing faculties. DESIGN: A multicenter descriptive, cross-sectional research design study followed. SUBJECT: Three hundred fifty-nine participants from the Centre, Delta, West, Suez Canal, and Upper regions of Egypt using a stratified random cluster sampling technique. MEASUREMENTS: Social and health related to climate data structured questionnaire, climate anxiety scale, environmental attitude inventory, and job engagement scale. RESULTS: The influence of demographics on climate anxiety, environmental attitude, and job involvement was not observed. Nevertheless, geographical variations emerged as a noteworthy factor. A statistically significant inverse correlation was identified between climate anxiety, job engagement dimensions, and the overall score of environmental attitudes. CONCLUSION: Climate anxiety was strongly associated with environmental attitudes and job engagement among nursing university colleagues. Higher climate anxiety is associated with a lower attitude towards the environment and decreased job engagement. Additionally, a higher attitude towards the environment is associated with decreased overall engagement in participants' jobs. IMPLICATIONS: The study's patterns make it clear how important it is to provide targeted psycho-educational interventions to help reduce climate anxiety among the group of nursing university colleagues. The imperative lies not only in alleviating the immediate psychological distress associated with heightened climate anxiety but also in fostering adaptive coping mechanisms. By doing so, these interventions serve as instrumental tools in nurturing resilience, thereby fortifying the mental well-being of nursing professionals amidst the evolving landscape of climate-related concerns.

10.
BMC Nurs ; 23(1): 18, 2024 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-38166837

RESUMO

BACKGROUND: Nomophobia, the crippling fear of being disconnected from mobile devices, is a burgeoning global concern. Given the critical nature of the profession of nursing students, understanding nomophobia's prevalence and potential impacts on patient care and professional conductors becomes even more crucial. AIM: This study explores the relationship between nomophobia and impulsive sensation-seeking among nursing students in Egypt. DESIGN AND METHODS: A multicenter cross-sectional survey was conducted with 1626 nursing students randomly selected from three universities across Egypt. TOOLS: The Arabic versions of the Nomophobia and Impulsive Sensation Seeking Questionnaires were employed to gather data. RESULTS: Our findings revealed that 40.3% of the surveyed nursing students exhibited severe nomophobia, indicating a substantial dependence on their mobile devices. Notably, this high prevalence was accompanied by a strong tendency towards impulsive sensation-seeking behaviors. Furthermore, a stepwise regression analysis identified several significant predictors of nomophobia (p < 0.001). Impulsive sensation-seeking, year of study, average daily smartphone usage, and age emerged as key factors, explaining 27.5% of the variability in nomophobia scores. CONCLUSION: The prevalence of nomophobia among Egyptian nursing students is undeniable, highlighting their substantial reliance on mobile devices. A significant association with impulsive sensation-seeking behavior further compounds this dependence. Factors such as impulsive sensation seeking, year of study, average daily smartphone usage, and age were identified as significant predictors of nomophobia. Recognizing these factors as key predictors of nomophobia is crucial for designing effective interventions and psychotherapies. Prioritizing such interventions can promote future nurses' well-being and ensure they deliver the highest quality care to their patients.

11.
Geriatr Nurs ; 58: 324-335, 2024 Jun 12.
Artigo em Inglês | MEDLINE | ID: mdl-38870598

RESUMO

BACKGROUND: The global aging population necessitates leveraging technology for older adults' independence and mental well-being. Gerontechnology, tailored for older users, thrives when accessible and accepted, with the pivotal role of acceptance of change shaping its adoption. AIMS: This study investigates the mediating role of acceptance of change in the relationship between gerontechnology acceptance and mental well-being among older adults and explores disparities in urban and rural settings DESIGN & METHODS: A cross-sectional, correlational design adhering to STROBE guidelines collected data through an interview survey from 802 older adults. Instruments included the Older Adult Structured Survey, Short Version of Senior Technology Acceptance, Acceptance of Change Scale, and the World Health Organization Well-Being Index. RESULTS: The results underscore a significant correlation between technology adoption, adaptability, and mental well-being among 60-year-olds and older. Notably, an individual's openness to change significantly influences the technology-mental well-being relationship, emphasizing its impact on overall health. Urban areas exhibit a stronger positive correlation between technology acceptance and mental well-being, whereas rural regions demonstrate a more pronounced negative correlation. CONCLUSION: This research contributes valuable knowledge for addressing the unique challenges older adults face in diverse geographic settings, paving the way for targeted and effective initiatives. IMPLICATIONS: Nurses should prioritize understanding the nexus between gerontechnology acceptance, change adaptability, and mental wellness, integrating technology education and culturally sensitive interventions to enhance care strategies for older adults in diverse geographic settings. This study lays the groundwork for developing person-centered geriatric nursing care plans, underscoring the importance of harnessing technology for improved mental well-being.

12.
J Environ Sci Health B ; 59(7): 399-416, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38785435

RESUMO

Secondary metabolites produced by Bacillus species from marine sources encompass a variety of compounds such as lipopeptides, isocoumarins, polyketides, macrolactones, polypeptides and fatty acids. These bioactive substances exhibit various biological activities, including antibiotic, antifungal, antiviral, and antitumor properties. This study aimed to isolate and identify a particular species of Bacillus from marine water and organisms that can produce bioactive secondary metabolites. Among the 73 Bacillus isolates collected, only 5 exhibited antagonistic activity against various viral and bacterial pathogens. The active isolates were subjected to 16S rRNA sequencing to determine their taxonomical affiliation. Among them, Bacillus tequilensis CCASU-2024-66 strain no. 42, with the accession number ON 054302 in GenBank, exhibited the highest inhibitory potential. It displayed an inhibition zone of 21 mm against Bacillus cereus while showing a minimum zone of inhibition of 9 mm against Escherichia coli and gave different inhibition against pathogenic fungi, the highest inhibition zone 15 mm against Candida albicans but the lowest inhibition zone 10 mm was against Botrytis cinerea, Fusarium oxysporum. Furthermore, it demonstrated the highest percentage of virucidal effect against the Newcastle virus and influenza virus, with rates of 98.6% and 98.1%, respectively. Furthermore, GC-MS analysis was employed to examine the bioactive substance components, specifically focusing on volatile and polysaccharide compounds. Based on these results, Bacillus tequilensis strain 42 may have the potential to be employed as an antiviral agent in poultry cultures to combat Newcastle and influenza, two extremely destructive viruses, thus reducing economic losses in the poultry production sector. Bacteria can be harnessed for the purpose of preserving food and controlling pathogenic fungi in both human and plant environments. Molecular docking for the three highly active derivatives 2,3-Butanediol, 2TMS, D-Xylopyranose, 4TMS, and Glucofuranoside, methyl 2,3,5,6-tetrakis-O-(trimethylsilyl) was carried out against the active sites of Bacillus cereus, Listeria monocytogenes, Candida albicans, Newcastle virus and influenza virus. The data obtained from molecular docking is highly correlated with that obtained from biology. Moreover, these highly active compounds exhibited excellent proposed ADMET profile.


Assuntos
Bacillus , Cromatografia Gasosa-Espectrometria de Massas , Bacillus/química , Bacillus/metabolismo , Anti-Infecciosos/farmacologia , Anti-Infecciosos/química , Água do Mar/microbiologia , RNA Ribossômico 16S/genética , Fungos/efeitos dos fármacos , Botrytis/efeitos dos fármacos
13.
J Contemp Dent Pract ; 25(1): 29-34, 2024 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-38514428

RESUMO

AIM: To evaluate the effect of thermo-mechanical cycling (TMC) on fracture resistance of different computer-aided design/computer-aided manufacture (CAD/CAM) crowns. MATERIALS AND METHODS: A total of 42 CAD/CAM crowns were fabricated on epoxy resin maxillary first premolar teeth and divided into three groups (n = 14) according to the material used: IPS e.max CAD (Ivoclar Vivadent) lithium disilicate (LD), Vita ENAMIC (VE) (VITA Zahnfabrik), Tetric CAD (Ivoclar Vivadent). Also, each group was subdivided into two equal subgroups according to TMC (n = 7). Subgroups (O) without TMC and subgroup (W) with TMC (5-55°C, 30 second, 75,000 cycles). All samples in each group were cemented with a universal bond (Tetric N bond universal) and adhesive resin cement (Variolink Esthetic DC) (Ivoclar Vivadent). Subsequently, the samples were loaded to failure in a universal testing machine at a crosshead speed of 1 mm/min, and the fracture pattern and the fracture resistance in each group were recorded. RESULTS: Fracture resistance was analyzed by one-way analysis of variance (ANOVA) test, followed by Tukey's post hoc test for pairwise comparison. Fracture resistance showed a significant difference between the tested groups before and after TMC; IPS e.max CAD has the highest value (1233.35 ± 97.72, 1165.73 ± 199.54 N) followed by Tetric CAD (927.62 ± 42.5, 992.04 ± 53.46 N) and Vita ENAMIC has lowest value (506.49 ± 74.24, 354.69 ± 90.36 N). CONCLUSION: Thermo-mechanical cycling affected the fracture resistance of both polymer-based CAD/CAM crowns. CLINICAL SIGNIFICANCE: For dental practitioners, both IPS e.max CAD and Tetric CAD can be used clinically for posterior teeth, providing satisfactory results and resistance to fracture. How to cite this article: Elmokadem MI, Haggag KM, Mohamed HR. Effect of Thermo-mechanical Cycling on Fracture Resistance of Different CAD/CAM Crowns: An In Vitro Study. J Contemp Dent Pract 2024;25(1):29-34.


Assuntos
Resinas Acrílicas , Resinas Compostas , Odontólogos , Poliuretanos , Papel Profissional , Humanos , Estética Dentária , Porcelana Dentária , Cerâmica/química , Coroas , Desenho Assistido por Computador , Teste de Materiais , Análise do Estresse Dentário , Falha de Restauração Dentária
14.
Cytokine ; 169: 156311, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37536222

RESUMO

BACKGROUND AND OBJECTIVE: The most important presentation of COVID-19 is hyper inflammatory condition and cytokine storm that occurs due to excessive increase of the inflammatory mediators specially, pro-inflammatory interleukins such as IL-1ß, IL-6 and tumor necrosis factor-α which have an important role in the cytokine storm pathway. Up till now there is not a definitive treatment for COVID-19 disease, but according to the pathophysiology of the disease, Anakinra (Interleukin- 1 inhibitor) is an adjuvant treatment option in patients with severe COVID-19 by blocking the effect of IL-1. So, we aimed to summarize the studies that evaluated the safety and efficacy of Anakinra in patients diagnosed with COVID-19. METHODS: We performed a search in PubMed, Cochrane Library, Scopus, and Web of Science (WOS) databases from inception till 7 Jan 2022. Additionally, we searched randomized and non-randomized clinical trials, cohort, case series, case control, case report more than 3 patients which contain confirmed cases of COVID-19 who received Anakinra (Interleukin- 1 inhibitor) for the management of hyper-inflammatory condition associated with COVID-19 disease. A meta-analysis was conducted using review manager 5.4. RESULTS: We included 44 articles in the systematic review. Ultimately, 23 studies were incorporated in the meta-analysis with a total number of 3179 patients. Our analysis showed statistically significant difference in the following outcomes: duration of ICU stays [MD = -0.65, 95% CI (-1.09, -0.03), p = 0.04], the number of patients who needed invasive mechanical ventilation [RR = 0.57, 95% CI (0.39, 0.84), p = 0.004], and number of deaths [RR = 0.80, 95% CI (0.66, 0.99), p = 0.04]. Our analysis showed no statistically significant difference in the following outcomes: length of hospital stays [MD = -0.16, 95% CI (-0.42, 0.11), p = 0.26], oxygen-free days [MD = -0.81, 95% CI (-3.81, 2.20), p = 0.60], and the number of patients who needed non-invasive mechanical ventilation [RR = 1.09, 95% CI (0.47, 2.52), p = 0.84]. CONCLUSION: Anakinra showed some promising results in important outcomes related to COVID-19 as it significantly reduced the rate of mortality and the need of invasive mechanical ventilation. It should be used in severe cases more than mild and moderate cases to avoid possible immunosuppression complications. Anakinra use is safe in cases of COVID-19 at dose less than 100 mg. Another important outcome was significant reduction is the D-dimer level. Anakinra may be effective in the treatment of specific immunocompromised cases, but it should be used cautiously.


Assuntos
COVID-19 , Proteína Antagonista do Receptor de Interleucina 1 , Humanos , COVID-19/terapia , Síndrome da Liberação de Citocina/tratamento farmacológico , Proteína Antagonista do Receptor de Interleucina 1/uso terapêutico , Respiração Artificial , Fator de Necrose Tumoral alfa
15.
J Nutr ; 153(9): 2598-2611, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37423385

RESUMO

BACKGROUND: Donor human milk banks use Holder pasteurization (HoP; 62.5°C, 30 min) to reduce pathogens in donor human milk, but this process damages some bioactive milk proteins. OBJECTIVES: We aimed to determine minimal parameters for high-pressure processing (HPP) to achieve >5-log reductions of relevant bacteria in human milk and how these parameters affect an array of bioactive proteins. METHODS: Pooled raw human milk inoculated with relevant pathogens (Enterococcus faecium, Staphylococcus aureus, Listeria monocytogenes, Cronobacter sakazakii) or microbial quality indicators (Bacillus subtilis and Paenibacillus spp. spores) at 7 log CFU/mL was processed at 300-500 MPa at 16-19°C (due to adiabatic heating) for 1-9 min. Surviving microbes were enumerated using standard plate counting methods. For raw milk, and HPP-treated and HoP-treated milk, the immunoreactivity of an array of bioactive proteins was assessed via ELISA and the activity of bile salt-stimulated lipase (BSSL) was determined via a colorimetric substrate assay. RESULTS: Treatment at 500 MPa for 9 min resulted in >5-log reductions of all vegetative bacteria, but <1-log reduction in B. subtilis and Paenibacillus spores. HoP decreased immunoglobulin A (IgA), immunoglobulin M (IgM), immunoglobulin G, lactoferrin, elastase and polymeric immunoglobulin receptor (PIGR) concentrations, and BSSL activity. The treatment at 500 MPa for 9 min preserved more IgA, IgM, elastase, lactoferrin, PIGR, and BSSL than HoP. HoP and HPP treatments up to 500 MPa for 9 min caused no losses in osteopontin, lysozyme, α-lactalbumin and vascular endothelial growth factor. CONCLUSION: Compared with HoP, HPP at 500 MPa for 9 min provides >5-log reduction of tested vegetative neonatal pathogens with improved retention of IgA, IgM, lactoferrin, elastase, PIGR, and BSSL in human milk.


Assuntos
Lactoferrina , Leite Humano , Recém-Nascido , Humanos , Leite Humano/microbiologia , Viabilidade Microbiana , Fator A de Crescimento do Endotélio Vascular , Pasteurização/métodos , Imunoglobulina A , Imunoglobulina M , Elastase Pancreática
16.
Fish Shellfish Immunol ; 142: 109171, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37858788

RESUMO

Protein-protein interactions (PPIs) are essential for understanding cell physiology in normal and pathological conditions, as they might involve in all cellular processes. PPIs have been widely used to elucidate the pathobiology of human and plant diseases. Therefore, they can also be used to unveil the pathobiology of infectious diseases in shrimp, which is one of the high-risk factors influencing the success or failure of shrimp production. PPI network analysis, specifically host-pathogen PPI (HP-PPI), provides insights into the molecular interactions between the shrimp and pathogens. This review quantitatively analyzed the research trends within this field through bibliometric analysis using specific keywords, countries, authors, organizations, journals, and documents. This analysis has screened 206 records from the Scopus database for determining eligibility, resulting in 179 papers that were retrieved for bibliometric analysis. The analysis revealed that China and Thailand were the driving forces behind this specific field of research and frequently collaborated with the United States. Aquaculture and Diseases of Aquatic Organisms were the prominent sources for publications in this field. The main keywords identified included "white spot syndrome virus," "WSSV," and "shrimp." We discovered that studies on HP-PPI are currently quite scarce. As a result, we further discussed the significance of HP-PPI by highlighting various approaches that have been previously adopted. These findings not only emphasize the importance of HP-PPI but also pave the way for future researchers to explore the pathogenesis of infectious diseases in shrimp. By doing so, preventative measures and enhanced treatment strategies can be identified.


Assuntos
Doenças Transmissíveis , Penaeidae , Vírus da Síndrome da Mancha Branca 1 , Animais , Humanos , Bibliometria , China , Tailândia , Vírus da Síndrome da Mancha Branca 1/fisiologia , Interações Hospedeiro-Patógeno
17.
BMC Nephrol ; 24(1): 271, 2023 09 14.
Artigo em Inglês | MEDLINE | ID: mdl-37710199

RESUMO

BACKGROUND: Although testosterone has a pivotal role in bone health, its correlation with bone mineral density (BMD) is understudied in kidney transplant recipients who are at high risk of osteoporosis. This study aimed to elucidate if there is any correlation between serum free testosterone and BMD in this population. PATIENTS AND METHODS: Sixty male kidney transplant recipients were enrolled in this cross-sectional study, and they were subjected to history taking, clinical examination, and laboratory investigations (including total and free testosterone). BMD was assessed in three regions (forearm, hip, and lumbar spine) using DEXA scan. RESULTS: The mean age of the included patients was 45.55 ± 13.58 years. Serum total and free testosterone had mean values of 5.17 ± 1.4 ng/ml and 95.46 ± 28.24 pg/ml, respectively, with all levels within the normal range. DEXA scan detected osteoporosis and osteopenia in 9 (15%) and 30 (50%) patients in the lumbar region, 3 (5%) and 36 (60%) in the hip region, as well as 21 (35%) and 33 (55%) in the forearm region, respectively. BMD of the lumbar region had a significant positive correlation with free testosterone, phosphorus, and eGFR, while it had a significant negative correlation with platelets and patient age. BMD of the hip region was positively correlated with serum phosphorus, parathyroid hormone, and duration since the transplant, whereas it was negatively correlated with platelets and total testosterone level. BMD of the forearm had a significant positive correlation with eGFR, whereas it had a significant negative correlation with age and duration since transplantation. In addition, forearm BMD was significantly lower in patients with a radiocephalic AVF. CONCLUSION: Even within the normal range, free testosterone has a significant positive correlation with lumbar spine BMD with no significant association with the forearm or hip BMD.


Assuntos
Transplante de Rim , Osteoporose , Humanos , Masculino , Adulto , Pessoa de Meia-Idade , Densidade Óssea , Estudos Transversais , Transplante de Rim/efeitos adversos , Testosterona
18.
Phytother Res ; 37(3): 1036-1056, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36343627

RESUMO

The worldwide spreading of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has posed a serious threat to health, economic, environmental, and social aspects of human lives. Currently, there are no approved treatments that can effectively block the virus although several existing antimalarial and antiviral agents have been repurposed and allowed use during the pandemic under the emergency use authorization (EUA) status. This review gives an updated overview of the antiviral effects of phytochemicals including alkaloids, flavonoids, and terpenoids against the COVID-19 virus and their mechanisms of action. Search for natural lead molecules against SARS-CoV-2 has been focusing on virtual screening and in vitro studies on phytochemicals that have shown great promise against other coronaviruses such as SARS-CoV. Until now, there is limited data on in vivo investigations to examine the antiviral activity of plants in SARS-CoV-2-infected animal models and the studies were performed using crude extracts. Further experimental and preclinical investigations on the in vivo effects of phytochemicals have to be performed to provide sufficient efficacy and safety data before clinical studies can be performed to develop them into COVID-19 drugs. Phytochemicals are potential sources of new chemical leads for the development of safe and potent anti-SARS-CoV-2 agents.


Assuntos
COVID-19 , SARS-CoV-2 , Animais , Humanos , Antivirais/farmacologia , Compostos Fitoquímicos/farmacologia
19.
BMC Nurs ; 22(1): 482, 2023 Dec 18.
Artigo em Inglês | MEDLINE | ID: mdl-38110907

RESUMO

BACKGROUND: Cardiopulmonary resuscitation (CPR) is considered one of the most stressful experiences in critical care nursing; it directly and indirectly leads to compassion fatigue and burnout. AIM: Determine the levels of and relationship between postcode stress and compassion fatigue. DESIGN AND METHODS: A descriptive-correlational study using 300 critical care nurses from five intensive care units in two hospitals was conducted. TOOLS: Demographic and work-related data, the Postcode Stress Scale, and the Professional Quality of Life Scale: Compassion Fatigue subscale. RESULTS: Nurses had moderate to high postcode stress and compassion fatigue (67.98 ± 16.39 and 65.40±14.34, respectively). Moreover, there was a significant positive correlation between postcode stress, burnout (r=0.350, p=<0.001), secondary traumatic stress (r=0.518, p=<0.001), and subsequently, compassion fatigue (r=0.449, p=<0.001). In addition, higher levels of postcode stress were associated with higher levels of compassion fatigue with its subscales: burnout and secondary traumatic stress, with a coefficient of determination for compassion fatigue (0.199), burnout subscale (0.121), and secondary traumatic stress (0.266). CONCLUSION: Critical care nurses involved in resuscitation experiences are susceptible to postcode stress, burnout, secondary traumatic stress, and compassion fatigue. There is a significant relationship between these factors, with higher levels of postcode stress contributing to higher levels of compassion fatigue and its subscales: burnout and secondary traumatic stress. These results highlight the importance of addressing and managing the psychological well-being of nurses in resuscitation settings to mitigate the adverse effects of stress and promote their overall resilience and well-being.

20.
BMC Oral Health ; 23(1): 50, 2023 01 30.
Artigo em Inglês | MEDLINE | ID: mdl-36710323

RESUMO

BACKGROUND: Maintaining good oral hygiene is key to preventing dental caries and periodontal disease. Children and adolescents with good oral hygiene behaviours are likely to grow into adults with the same behaviours. This study assessed the frequency of using various oral hygiene methods among children and adolescents from different countries and individual, familial and country-level factors associated with the use of these methods. METHODS: A multi-country online survey collected data from caregivers of children in 2020-21 about children's use of oral hygiene methods including toothbrush, fluoridated toothpaste, mouthwash, dental floss and miswak using self-administered, close-ended questions. Adjusted multilevel logistic regression models were used to assess the relationship between each of the five oral hygiene methods (dependent variables) and the independent factors: sex, age, and history of dental visits (individual factors), mother's education and area of residence (familial factors) as well as country income and region (country-level factors). RESULTS: A total of 4766 parents/caregivers were included from 20 countries (77.4% Eastern Mediterranean-region and 41.6% lower middle income countries). The most frequent oral hygiene methods were using toothbrush and toothpaste (90% and 60.3%). The use of oral hygiene methods differed by age, sex and history of dental visits as well as mother's education and area of residence (P < 0.05). In addition, children from low income countries had significantly lower odds of using mouthwashes and dental floss than those from high income countries (AOR = 0.55, 95% CI 0.31, 0.98 and AOR = 0.34, 95% CI 0.12, 0.97) whereas children from the European region had higher odds of using mouthwash (AOR = 2.82, 95% CI 1.27, 6.26) and those from the region of the Americas had higher odds of using dental floss (AOR = 3.84, 95% CI 1.28, 11.52) than those from the Eastern Mediterranean region. CONCLUSIONS: The use of various oral hygiene methods is associated with individual, familial and country-level factors. Oral health promotion programs should be developed taking into account these influences.


Assuntos
Cárie Dentária , Higiene Bucal , Adulto , Adolescente , Humanos , Criança , Cárie Dentária/prevenção & controle , Cremes Dentais , Antissépticos Bucais/uso terapêutico , Saúde Bucal
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