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547 result(s) for "Mohamed, Basma A."
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Cobalt oxide nanoparticles induce cytotoxicity and excessive ROS mediated mitochondrial dysfunction and p53-independent apoptosis in melanoma cells
Nanotherapy has emerged as a promising strategy for the targeted and efficient treatment of melanoma, the most aggressive and lethal form of skin cancer, with minimized systemic toxicity. However, the therapeutic efficacy of cobalt oxide nanoparticles (Co 3 O 4 NPs) in melanoma treatment remains unexplored. This study aimed to assess the therapeutic potential of Co 3 O 4 NPs in melanoma treatment by evaluating their impact on cell viability, genomic DNA and mitochondrial integrity, reactive oxygen species (ROS) generation and apoptosis induction in melanoma A-375 cells. Our findings demonstrated a concentration-dependent reduction in cell viability upon treatment with five Co 3 O 4 NP concentrations (0.2, 2, 20, 200, and 2000 µg/ml), with an IC50 value of 303.80 µg/ml. Treatment with this IC50 concentration significantly increased ROS generation, induced dramatic DNA damage, and disrupted mitochondrial membrane potential integrity. Flow cytometric analysis revealed apoptosis and necrosis induction following Co 3 O 4 NP exposure at the IC50 concentration value. Results of qRT-PCR analysis demonstrated remarkable dysregulation of apoptotic and mitochondrial genes, including a significant downregulation of apoptotic p53 and mitochondrial ND3 genes and marked upregulation of the anti-apoptotic gene Bcl2. These findings highlight the novel potential of Co 3 O 4 NPs as potent inducers of melanoma A-375 cell death in a concentration-dependent manner through excessive ROS production, genomic instability, mitochondrial dysfunction and dysregulation of apoptotic and mitochondrial gene expression, ultimately promoting apoptosis in A-375 cells. This study thus underscores the potential of Co 3 O 4 NPs as a promising nanotherapeutic candidate for melanoma treatment, warranting further exploration to elucidate their full biological and clinical applicability.
Yttrium oxide nanoparticles induce selective cytotoxicity, genomic instability and ROS mitochondrial P53 mediated apoptosis in human pancreatic cancer cells
Pancreatic cancer is a hard-to-treat tumor with a poor prognosis. While traditional pancreatic cancer therapies can be effective, issues like cytotoxicity, low selectivity, and drug resistance still pose major challenges. Nanotechnology has shown promise in improving cancer diagnosis and treatment. Yttrium oxide nanoparticles (Y 2 O 3 -NPs), for example, have demonstrated potent selective cytotoxicity against triple negative breast cancer cells; but their effects on pancreatic cancer cells have not been explored. This study aimed to explore the impact of Y 2 O 3 -NPs on cell proliferation, DNA integrity, and oxidative stress in pancreatic cancer (PANC-1) and human skin fibroblast (HSF) cells. The cytotoxicity of Y 2 O 3 -NPs after 72 h were estimated using Sulforhodamine (SRB) cytotoxicity assay, while alkaline Comet assay was done to study genomic DNA integrity. Generation level of reactive oxygen species (ROS) and integrity of mitochondrial membrane potential were also analyzed. Apoptosis induction was investigated using Flow Cytometry and expression level of apoptotic (p53), anti-apoptotic (Bcl2) and mitochondrial (ND3) genes was measured using quantitative RTPCR. Our findings exhibited that Y 2 O 3 -NPs had strong selective cytotoxicity against PANC-1 cells with an IC50 value of 31.06 µg/ml, while having minimal effect on normal HSF cells (IC50 = 319.21 µg/ml). Treatment of PANC-1 cells with Y 2 O 3 -NPs at the IC50 concentration for 72 h significantly increased intracellular ROS levels and DNA damage, along with a notable reduction in mitochondrial membrane potential. Additionally, a significant rise in necrotic, early, and late apoptotic cells was observed, accompanied by downregulation of the anti-apoptotic Bcl2 gene and upregulation of the apoptotic p53 and mitochondrial ND3 genes. These findings highlight the selective toxicity of Y 2 O 3 -NPs towards cancerous PANC-1 cells, with minimal impact on normal cells. Y 2 O 3 -NPs appear to induce apoptosis in cancer cells by increasing ROS generation, damaging DNA, disrupting mitochondrial function, and triggering cell death. This study suggests that Y 2 O 3 -NPs may be a promising candidate for pancreatic cancer treatment. Further research is needed to fully explore their therapeutic potential.
The elderly emergency surgical patient: Risk factors that alter perioperative management
[...]of the high association between hip fracture, cognitive impairment, and the aging population, multiple retrospective reviews analyzing the incidence of delirium in this specific population have shown a rate of 30% to 60% specifically in patients with hip fractures [2,3]. In this issue of Journal of Clinical Anesthesia, Harris et al. retrospectively analyzed American College of Surgeons National Surgical Quality Improvement Program – Geriatric Surgery Pilot project data to identify potential clinical predictors of postoperative delirium, functional status, and mortality after hip fracture surgery [4]. [...]preoperative screening of a patient's baseline cognitive impairment and the reason for that (opioid use and/or lack of pain control versus undiagnosed cognitive impairment) implemented prior to an emergency procedure as a standardized protocol for this vulnerable patient population would be a positive future direction in the perioperative care of this patient population, even prior to emergency procedures.
The BUDDYS System: A Unique Peer Support Strategy Among Anaesthesiology Residents During the COVID-19 Pandemic
Objective:The coronavirus disease 2019 pandemic stressed healthcare organizations. Initial efforts focused on supplies with a minimal empha- sis on frontline healthcare workers’ wellbeing. Anaesthesiology residents represent vulnerable frontline healthcare workers because airway pro- cedures increase nosocomial infection risks. Peer support can promote healthcare workers’ wellbeing during crises; its application to graduate medical trainees is underrepresented in the literature. We implemented a quality improvement project to improve wellbeing among anaesthesiol- ogy residents via a peer support system called BUilding Dynamic Duos for Your Support.Methods:BUilding Dynamic Duos for Your Support consists of pairing 2 anaesthesiology residents with instructions to support each other in anticipation of a coronavirus disease 2019 case surge. A lecture presentation introduced this system to the residents and described frequent check-ins with another resident. We evaluated the initiative with a survey 2-4 weeks postimplementation.Results:BUilding Dynamic Duos for Your Support began in April 2020 and involved 88 residents. Survey respondents (n = 58) indicated that BUilding Dynamic Duos for Your Support had a positive impact on their wellbeing. BUilding Dynamic Duos for Your Support implementation had no additional costs, requiring minimal resource dedication.Conclusions:BUilding Dynamic Duos for Your Support promoted wellbeing among anaesthesiology trainees. This quality improvement project highlights the positive impact of a peer support system on anaesthesiology residents’ wellbeing with a potential broader application to graduate medical education.
Perindopril and/or α‑pinene mitigate acetic acid-induced ulcerative colitis via regulation of JAK/STAT3/SOCS3 axis and miR-98-5p expression in rats
Background Ulcerative colitis (UC) is the most common type of inflammatory bowel disease (IBD) whose pathogenesis may involve inflammation, oxidative stress, apoptosis and fibrosis. The aim of this study is to ameliorate UC pathogenic mechanisms by using perindopril (PER; 2 mg/kg/day), an antihypertensive drug acting by inhibition of angiotensin-converting enzyme, and/or α-pinene (APN; 50 mg/kg/day), a naturally occurring volatile organic compound known for its anti-inflammatory and antioxidant effects, in comparison with the traditional treatment sulfasalazine (SSZ; 100 mg/kg/day) in acetic acid-induced UC in rats. Results The results showed that PER and/or APN improved UC macroscopic and microscopic lesions, while functionally decreasing the disease activity index. PER and/or APN also improved the oxidative status by decreasing malondialdehyde and nitric oxide while increasing reduced glutathione in UC-induced colons. Compared to UC group, animals treated with SSZ, PER, APN and PER + APN had increased levels of the anti-inflammatory cytokine IL-10 by 3.0, 1.9, 2.3 and 3.8 folds, respectively. Furthermore, compared to UC group, JAK-2 was declined by 51%, 39.2%, 42.8% and 60.7% and p-STAT3/STAT3 ratio was decreased by 41.4%, 46.5%, 50.9% and 58.6%, while SOCS3 levels were increased by 2.8, 2.0, 2.2 and 3.4 folds in SSZ, PER, APN and PER + APN groups, respectively. In addition, the pro-fibrotic marker MMP-9 was decreased by 51.7%, 58.2%, 55.1% and 66.13% and the pro-apoptotic markers also were decreased by 51.9%, 51.6%, 55.8% and 68.8% for c-caspase 3 and 47.7%, 53.8%, 54% and 67.6% for cytochrome C in SSZ, PER, APN and PER + APN groups, respectively. For MIR-98-5p, a microRNA known to have a role in IBD, it was decreased compared to UC group by 61.6%, 47.2%, 52.1% and 74% in SSZ, PER, APN and PER + APN groups, respectively. Conclusion In conclusion, to the best of our knowledge, this is the first study to demonstrate that PER and APN can modulate the JAK-STAT3-SOCS3 signaling axis and MIR-98-5p in UC model, to levels comparable to the traditional therapy with SSZ, and can be considered novel modulators of JAK-2/STAT3/SOCS3 and miR-98-5p in colon. Graphical abstract
Integrative analysis of gut microbiota and metabolic pathways reveals key microbial and metabolomic alterations in diabetes
Type 2 diabetes mellitus (T2DM) is increasingly recognized as a condition influenced by gut microbiota composition and associated metabolic pathways. This study investigated the differences in gut microbial diversity, composition, and metabolomic profiles between diabetic and control individuals. Using 16 S rRNA gene sequencing and metabolomic analyses, we observed significantly higher microbial diversity and evenness in the diabetic group, with distinct clustering patterns as revealed by Principal Coordinate Analysis (PCoA). Taxonomic profiling demonstrated an increased relative abundance of Bacteroidaceae and Lachnospiraceae in the diabetic group, while Streptococcaceae was more prevalent in the control group. LEfSe analysis identified key microbial taxa such as Bacteroides , Blautia , and Lachnospiraceae_FCS020_group enriched in diabetic individuals, suggesting a role in metabolic dysregulation. Metabolomic pathway enrichment analysis revealed significant differences in pathways related to fatty acid metabolism, glucose homeostasis, bile acid metabolism, and amino acid biosynthesis in diabetic individuals. Enriching fatty acid elongation and β-oxidation pathways, alongside disrupted glucose metabolism, indicate profound metabolic changes associated with diabetes. Bile acid metabolism and branched-chain amino acid (BCAA) pathways were also elevated, linking these metabolites to the observed gut microbiota shifts. These findings suggest that diabetes is associated with significant alterations in the gut microbiome’s composition and function, leading to disruptions in critical metabolic pathways. This study provides insights into potential microbial biomarkers and therapeutic targets for improving metabolic health in diabetic patients.
The Potential Protective Effect and Underlying Mechanisms of Physiological Unconjugated Hyperbilirubinemia Mediated by UGT1A1 Antisense Oligonucleotide Therapy in a Mouse Model of Cyclosporine A-Induced Chronic Kidney Disease
Cyclosporine A (CSA) is an immunosuppressive drug that has improved transplant survival rates. However, its use is often limited because it is thought to be linked to the development of chronic kidney disease after kidney transplants. This study aimed to investigate the protective effects and underlying mechanisms of physiological unconjugated (UC) hyperbilirubinemia mediated by UGT1A1 antisense oligonucleotide in a mouse model of CsA-induced chronic kidney disease, and match these with that of chitosan (CH) as a natural chelator against kidney injury. In the current study, CsA-treated mice were given an intravenous injection of UGT1A1 antisense morpholino oligonucleotide (16 µg/kg) every third day for 14 days. In serum samples, bilirubin, creatinine, and urea were determined. Markers of oxidative stress, antioxidant activities, and mRNA expression of target genes PPAR-α, cFn, eNOS, NF-B, AT1-R, ETA-R, Kim-1, and NGAL were measured in the kidney tissues. Moreover, histopathological examinations were carried out on the kidney tissue. Physiological UC hyperbilirubinemia could be a promising protective strategy against CsA-induced kidney disease in transplant recipients. UGT1A1 antisense oligonucleotide-induced physiological UC hyperbilirubinemia serum significantly protected against CsA-induced kidney dysfunction. UCB acts as a signaling molecule that protects against kidney disease through different mechanisms, including antioxidant, anti-inflammatory, and hormonal action, by activating nuclear hormone receptors (PPAR-α). Moreover, it significantly downregulated mRNA expression of NF-kB, ETA-R, iNOS, AT1-R, cFn, Kim-1, and NGAL in the kidney tissue and alleviated CsA-induced kidney histological changes in CsA-treated mice.
Environmental Policy to Develop a Conceptual Design for the Water–Energy–Food Nexus: A Case Study in Wadi-Dara on the Red Sea Coast, Egypt
In the next twenty years, the scarcity of food shortage and drinking water will appear in Egypt due to the growth of industries and agriculture. This paper develops a conceptual design of the new technologies in the field of water–energy–food in new cities. Border lines are the internal relationship, external influence, and linkage system evaluation for WEF nexus. The major problems of using fossil energy in desalination are emissions and non-renewability, as well as the preference for dispersed freshwater production instead of concentrated output. The design of a desalination system that is integrated with renewable energies is critical these days. This type of system can also reduce the production of environmental pollutants due to reduced energy consumption and transfer of freshwater. GIS data from the United Nations have confirmed the existence of an underground reservoir in Wadi-Dara that can cultivate 1000 acres using smart farming techniques to reach a circular economy for an integrated solution between the water–energy nexus. The possibility of cultivating a hundred acres in Wadi-Dara on the Red Sea coast exists, through which about one million people could be settled. In this comprehensive review, we conducted a deep study in order to establish a sustainable integrated lifestyle in the Dara Valley region in terms of the availability of potable water, clean energy, and agriculture. Sustainable integrated solutions were conducted for seawater desalination using beach sand filtration wells as a pretreatment for seawater using renewable energy, e.g., wind energy (18% wind turbines), and photovoltaic panels (77% PV panels). Strategic food will be cultivated using smart farming that includes an open ponds cultivation system of microalgal cells to synthesis (5.0% of bio-fuel (. Aqua agriculture and aquaponics will cultivate marine culture and integrate mangrove, a shrimp aquaculture. A municipal waste water treatment is conceived for the irrigation of shrubby forests and landscapes. Mixotrophic cultures were explored to achieve a sustained ecological balance. Food, poultry and animal waste management, as well as a cooker factory, were included in the overall design. The environmental impact assessment (EIA) study shows a low risk due to anticipated net zero emissions, a 75% green city, and optimal waste recycling. This research assists in combining research efforts to address the challenging processes in nexus research and build resilient and sustainable water, energy, and food systems.
Anticancer, Anticoagulant, Antioxidant and Antimicrobial Activities of Thevetia peruviana Latex with Molecular Docking of Antimicrobial and Anticancer Activities
Natural origin molecules represent reliable and excellent sources to overcome some medicinal problems. The study of anticancer, anticoagulant, and antimicrobial activities of Thevetia peruviana latex were the aim of the current research. An investigation using high-performance liquid chromatography (HPLC) revealed that the major content of the flavonoids are rutin (11.45 µg/mL), quersestin (7.15 µg/mL), naringin (5.25 µg/mL), and hisperdin (6.07 µg/mL), while phenolic had chlorogenic (12.39 µg/mL), syringenic (7.45 µg/mL), and ferulic (5.07 µg/mL) acids in latex of T. peruviana. Via 1,1-diphenyl-2- picrylhydrazyl (DPPH) radical scavenging, the experiment demonstrated that latex had a potent antioxidant activity with the IC50 43.9 µg/mL for scavenging DPPH. Hemolysis inhibition was 58.5% at 1000 µg/mL of latex compared with 91.0% at 200 µg/mL of indomethacin as positive control. Negligible anticoagulant properties of latex were reported where the recorded time was 11.9 s of prothrombin time (PT) and 29.2 s of the activated partial thromboplastin time (APTT) at 25 µg/mL, compared with the same concentration of heparin (PT 94.6 s and APPT 117.7 s). The anticancer potential of latex was recorded against PC-3 (97.11% toxicity) and MCF-7 (96.23% toxicity) at 1000 μg/mL with IC50 48.26 μg/mL and 40.31 µg/mL, respectively. Disc diffusion assessment for antimicrobial activity recorded that the most sensitive tested microorganisms to latex were Bacillus subtilis followed by Escherichia coli, with an inhibition zone (IZ) of 31 mm with minimum inhibitory concentration (MIC) (10.2 μg/mL) and 30 mm (MIC, 12.51 μg/mL), respectively. Moreover, Candida albicans was sensitive (IZ, 28 mm) to latex, unlike black fungus (Mucor circinelloides). TEM examination exhibited ultrastructure changes in cell walls and cell membranes of Staphylococcus aureus and Pseudomonas aeruginosa treated with latex. Energy scores of the molecular docking of chlorogenic acid with E. coli DNA (7C7N), and Rutin with human prostate-specific antigen (3QUM) and breast cancer-associated protein (1JNX), result in excellent harmony with the experimental results. The outcome of research recommended that the latex is rich in constituents and considered a promising source that contributes to fighting cancer and pathogenic microorganisms.
A Meta-Analysis Examining the Impact of Consuming Nitrogen-Free Analogs of Essential Amino Acids on the Progression of Chronic Renal Disease
Background and Objectives: We conducted a meta-analysis to assess the impact of nitrogen-free substitutes for essential amino acids on the progression of chronic kidney disease (CKD). Materials and Methods: A comprehensive literature review conducted up to November 2024 identified 15 studies that involved 1596 participants with CKD at baseline; among them, 797 were on very-low-protein diets (LPDs) enriched with nitrogen-free analogs (NFA), while 799 followed a standard LPD. Results: A very-LPD utilizing NFA showed significantly improved estimated glomerular filtration rate (MD, 1.00; 95% CI, 0.35–1.64, p = 0.002), reduced serum creatinine (MD, −0.44; 95% CI, −0.75 to −0.13, p = 0.006), decreased blood urea nitrogen (MD, −35.34; 95% CI, −64.27 to −6.42, p = 0.02), and lower parathyroid hormone levels (MD, −1.25; 95% CI, −2.33 to 0.18, p = 0.02) when compared to a standard LPD in patients with CKD. Nevertheless, the very-LPD with NFA resulted in no significant differences in serum albumin (MD, 0.08; 95% CI, −0.03 to 0.19, p = 0.14), serum cholesterol (MD, −17.25; 95% CI, −42.79 to 8.29, p = 0.19), serum phosphorus (MD, −0.41; 95% CI, −0.97 to 0.15, p = 0.15), and serum calcium (MD, 0.16; 95% CI, −0.06 to 0.39, p = 0.16) compared to a typical LPD in subjects with CKD. Conclusions: A very-LPD supplemented with NFA showed a notably higher estimated glomerular filtration rate, decreased serum creatinine levels, lower blood urea nitrogen, and reduced parathyroid hormone levels; however, there were no significant differences observed in serum albumin, serum cholesterol, serum phosphorous, and serum calcium when compared to a standard LPD in individuals with CKD. Additional research is necessary to confirm these results.