Enhancing public health outcomes with AI-powered clinical surveillance: Precise detection of COVID-19 variants using qPCR and nanopore sequencing

BACKGROUND

We aimed to evaluate the efficacy of integrating the Varia5 multiplex assay (qPCR) and whole genome sequencing (WGS) for monitoring SARS-CoV-2, focusing on their overall performance in identifying various virus variants.

METHODS

This study included 140 naso-pharyngeal swab samples from individuals with suspected COVID-19. We utilized our self-developed Varia5 multiplex assay, which targets five viral genes linked to COVID-19 mutations, in conjunction with comprehensive genomic analysis performed through whole genome sequencing (WGS) using the Oxford Nanopore system. Machine learning was integrated to optimize the qPCR conditions and enhance the detection efficiency.

RESULTS

The Varia5 assay identified the prevalent BA.2.75 variant in 92 samples compared to that in 81 samples detected via WGS. The BA.5.2 variant, indicative of higher viral loads, was identified in 15 samples via Varia5 and in 14 samples via WGS.Furthermore, rare variants, such as BA.2.10, were identified. The mean Ct value was 18.36, with significant viral load differences noted between specific variants.

CONCLUSION

Our findings demonstrate that while WGS offers enhanced sensitivity and specificity for variant detection, qPCR remains crucial for large-scale testing because of its cost and time efficiency. The integrated approach, which combines both techniques, represents a more comprehensive monitoring algorithm that can improve public health strategies against pandemics such as COVID-19.

From protein to immunology: comprehensive insights into Marburg virus vaccines, mechanism, and application

The Marburg virus (MARV), a member of the Filoviridae family, is a highly lethal pathogen that causes Marburg virus disease (MVD), a severe hemorrhagic fever with high fatality rates.Despite recurrent outbreaks, no licensed vaccine is currently available. This review explores MARV's genomic architecture, structural proteins, and recent advancements in vaccine development. It highlights the crucial role of MARV's seven monocistronic genes in viral replication and pathogenesis, with a focus on structural proteins such as nucleoprotein (NP), glycoprotein (GP), and viral proteins VP35, VP40, and VP24. These proteins are essential for viral entry, immune evasion, and replication. The review further examines various vaccine platforms, including multi-epitope vaccines, DNA-based vaccines, viral vector vaccines, virus-like particles (VLPs), and mRNA vaccines. Cutting-edge immunoinformatics approaches are discussed for identifying conserved epitopes critical for broad-spectrum protection. The immunological responses induced by these vaccine candidates, particularly their efficacy in preclinical trials, are analyzed, showcasing promising results in generating both humoral and cellular immunity. Moreover, the review addresses challenges and future directions in MARV vaccine development, emphasizing the need for enhanced immunogenicity, safety, and global accessibility. The integration of omics technologies (genomics, transcriptomics, proteomics) with immunoinformatics is presented as a transformative approach for next-generation vaccine design. Innovative platforms such as mRNA and VLP-based vaccines offer rapid and effective development opportunities. In this study, underscores the urgent need for a licensed MARV vaccine to prevent future outbreaks and strengthen global preparedness. By synthesizing the latest research and technological advancements, it provides a strategic roadmap for developing safe, effective, and broadly protective vaccines. The fight against MARV is a global priority, requiring coordinated efforts from researchers, policymakers, and public health organizations.

A critical review on phytochemicals as antiviral medications for SARS-CoV-2 virus infection

A pandemic of acute respiratory infection, which was specified as coronavirus disease 2019, was instigated by a different strain of the virulent coronavirus SARS-CoV-2 that first appeared in late 2019. Since viral infections spread fast and there is presently no effective treatment, the use of plants with a long history of use in treating these infections has been explored regularly. The pandemic of coronavirus disease 2019 (COVID-19) has brought to light the dearth of medications with approval to treat acute viral illnesses. Because of this, the illness had a high fatality rate. The mortality rate was initially quite high and varied according to the patient's geographic location. For instance, among Chinese patients, the rate was 3·6%, whereas 1·5% of COVID-19-related deaths were documented outside of China. As of 2020, India has a 1.4% case fatality rate (CFR) of COVID-19 mortality, compared to 2.8% in Brazil and 1.8% in the USA. Many studies are being conducted to create pharmaceutical compounds specifically targeting important SARS-CoV-2 proteins. Several drug discovery initiatives are being undertaken to find powerful inhibitors by combining biochemical assay and computer-aided drug design techniques. Although plant-derived compounds have not had much success in the dominion of antivirals, plants are, however, believed to be a limitless supply of medications for a variety of diseases and clinical conditions. The scientific foundation required for developing novel natural source medications is provided by the chemical characterization and analysis of plant components. Most viral infections treated by ethnobotanical applications and historical literature on ayurveda, and traditional medicine are generally attributed to phytochemicals, which are compounds derived from medicinal plants. In this review, we have described the application of vascular plant-derived chemicals, such as tannins, polyphenols, alkaloids, and flavonoids, as antivirals, especially for managing COVID-19. This article discusses novel bioactive compounds and their molecular structures that target the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) as prospective candidates for anti-coronavirus disease drugs. Moreover, to confirm the effectiveness of the phytochemicals that have demonstrated antiviral activity, clinical trials would need to be conducted in addition to the preclinical research that has already been done. To ensure spectacular findings, more applications of the compound would need to be studied to fully understand the effects of those phytochemicals whose clinical usefulness has already been established.

Pharmacokinetics of the Monoclonal Antibody, Sotrovimab, in Healthy Participants Following IM Administration at Different Injection Sites

Sotrovimab is a recombinant human monoclonal antibody for the early treatment of mild-to-moderate COVID- 19. A phase I, open-label, randomized, parallel-group study was conducted to investigate the pharmacokinetics, relative bioavailability, safety, and tolerability of two concentrations of sotrovimab administered intramuscularly at different injection sites in healthy volunteers. The study consisted of three parts (A, B, and C) and the pharmacokinetic results from Part A are reported herein. In Part A, participants were randomized in a 2:2:1:1 ratio to a 500 mg dose of 62.5 mg/mL sotrovimab administered into dorsogluteal muscle, or 100 mg/mL sotrovimab administered into dorsogluteal, anterolateral thigh, or deltoid muscles. Formulation concentration did not impact exposure following dorsogluteal administration; the point estimates (90% confidence interval [CI]) of the geometric mean ratios (GMRs) of area under the curve (AUC)inf and maximum serum concentration (Cmax) for dorsogluteal administration of 100 mg/mL vs. 62.5 mg/mL intramuscular sotrovimab were 0.95 (0.86-1.05) and 1.14 (1.02-1.27), respectively. However, the administration of 100 mg/mL sotrovimab in thigh or deltoid resulted in increased exposure relative to gluteal injections; the point estimates (90% CI) of the GMRs for 100 mg/mL intramuscular sotrovimab administered into thigh or deltoid muscles vs. 100 mg/mL administered dorsogluteally were 1.63 (1.46-1.83) and 1.50 (1.34-1.67) for AUCinf, and 1.82 (1.60-2.08) and 1.49 (1.31-1.69) for Cmax, respectively. Notably, thigh and deltoid administration also resulted in lower variability in key pharmacokinetic parameters such as AUC, Cmax, apparent clearance and volume of distribution, and earlier achievement of Cmax, than dorsogluteal intramuscular administration of sotrovimab.

In Vitro Evaluation of the Ultraviolet Ceed Mobile Disinfection Device: A Rapid, Portable Approach for Surface Sterilization

Introduction: Ultraviolet-C (UVC) sterilization technologies have garnered significant attention for their potential to inactivate pathogens. The UVCeed device, a smartphone-enabled UVC sterilization tool, offers a portable and user-friendly option for disinfection. This study investigates the disinfection efficacy of UVCeed against bacterial and viral pathogens, including Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, and SARS-CoV-2. Methods: Pathogens were inoculated onto sterile surfaces such as urine cups (bacteria) or glass slides (virus) and exposed to the UVCeed device at controlled distances (65 mm, 100 mm, and 165 mm) and durations ranging from 0 to 64 seconds. Laboratory conditions were standardized at 72°F and 40-50% relative humidity. Assessment methods included viable plate counts for bacterial colonies and cytopathic effect (CPE) measurements for SARS-CoV-2 using Vero E6 cell cultures. Crystal violet staining confirmed viral cell viability post-exposure. Key metrics, such as log reductions in pathogen concentration, were calculated to quantify disinfection efficacy. Results: UVCeed achieved significant pathogen reductions, with log reductions exceeding 6.0 for Staphylococcus aureus, Escherichia coli, and Klebsiella pneumoniae after 64 seconds at 65 mm. For SARS-CoV-2, viral concentrations decreased by over four log-units within the same exposure time. Threshold times for effective disinfection varied by distance, with shorter distances achieving reductions faster. Compared to Lysol® wipes, which required up to four minutes of wetness for similar effectiveness, UVCeed disinfected a 6"x 6" surface in ~15 seconds and an 8"x 8" surface in ~37 seconds. Discussion: These results highlight UVCeed's efficiency as a rapid and portable disinfection solution. Its ability to inactivate pathogens within seconds makes it a valuable alternative to chemical disinfectants, especially for high-touch surfaces. The device's efficacy varied with distance and exposure time, underscoring the importance of proper usage. Future research should explore real-world applications and expand pathogen testing to validate these findings further.

Virology, epidemiology, transmissions, diagnostic tests, prophylaxis and treatments of human Mpox: Saudi Arabia perspective

Mpox (Monkeypox) is a highly contagious viral disease that can be transmitted from animal-to-human or human-to-human through intimate contact, Mpox is caused by the monkeypox virus (MPXV), which is an enveloped double-stranded DNA that belongs to the genus Orthopoxvirus, Poxviridae family, and subfamily Chordopoxvirinae. Mpox cases were previously only reported in West and Central Africa, however in recent times non-endemic countries including Saudi Arabia (SA) also reported confirmed Mpox cases. The first laboratory-confirmed human Mpox case in SA was reported on 14 July 2022, since then a number of confirmed Mpox cases have been reported by WHO in SA. These confirmed Mpox cases in SA were observed among individuals with a history of visiting European Union countries. SA is not only at risk of importation of Mpox cases owing to travel to such countries, but also there are various other risk factors including geographic proximity to the African continent, trade in exotic animals, and massive inflow of tourists. Therefore, government health authorities of SA should continue to collaborate with various international health organizations including WHO to prevent, manage or monitor potential health risks at most of the entry points in SA including highways, seaports, and airports by ensuring adherence to hygiene protocols, vaccinations, and health screenings. There are a range of diagnostic tests are currently available that can be used in SA to confirm Mpox infections, including real-time PCR, loop-mediated isothermal amplification, serological testing, clustered regularly interspaced short palindromic repeat-CRISPR-associated protein (CRISPR-Cas)-based systems, whole-genome sequencing, electron microscopy, and virus isolation and culture. There is no approved treatment specifically for Mpox, however multiple approved antiviral agents for smallpox treatment were found to be useful in Mpox treatment and in the management of Mpox outbreaks, such as- trifluridine, brincidofovir, tecovirimat, and cidofovir. The aim of this review is to provide valuable insights regarding virology, pathogenesis, epidemiology, transmissions, clinical presentation, diagnostic tests, prophylactic measures and therapeutic options of Mpox from SA perspective. Moreover, a side-by-side discussion on the global trend and scenarios of Mpox has been provided for comparison and further improvement in measures against Mpox in SA.

Hepatic dysfunction among scrub typhus Indian patients with acute undifferentiated febrile illness

Scrub typhus is a febrile illness caused by through trombiculid mite, bite Orientia tsutsugamushi. It is often unrecognized due to its vague symptoms. It is prevalent in the Rewa region of Madhya Pradesh, India. Therefore, it is of interest to assess hepatic dysfunction and to establish the association between liver function test parameters and disease severity in confirmed Scrub typhus cases. Hence, 50 IgM ELISA positive cases from July to September 2024 at Shyam Shah Medical College, Rewa were studied. Data were analysed using IBM SPSS 25 software, with Spearman's correlation used to relate severity, liver function test parameters and fever duration. The average fever duration was 6.22 days, with 80% of patients showing serum glutamate oxaloacetate transaminase and 70% showing serum glutamate pyruvate transaminase abnormalities. Thus, there was a correlation between disease severity and liver dysfunction, with moderate injury in 62% and severe injury in 38% of patients.

Advancements and Challenges in Addressing Zoonotic Viral Infections with Epidemic and Pandemic Threats

Zoonotic viruses have significant pandemic potential, as evidenced by the coronavirus pandemic, which underscores that zoonotic infections have historically caused numerous outbreaks and millions of deaths over centuries. Zoonotic viruses induce numerous types of illnesses in their natural hosts. These viruses are transmitted to humans via biological vectors, direct contact with infected animals or their bites, and aerosols. Zoonotic viruses continuously evolve and adapt to human hosts, resulting in devastating consequences. It is very important to understand pathogenesis pathways associated with zoonotic viral infections across various hosts and develop countermeasure strategies accordingly. In this review, we briefly discuss advancements in diagnostics and therapeutics for zoonotic viral infections. It provides insight into recent outbreaks, viral dynamics, licensed vaccines, as well as vaccine candidates progressing to clinical investigations. Despite advancements, challenges persist in combating zoonotic viruses due to immune evasion, unpredicted outbreaks, and the complexity of the immune responses. Most of these viruses lack effective treatments and vaccines, relying entirely on supportive care and preventive measures. Exposure to animal reservoirs, limited vaccine access, and insufficient coverage further pose challenges to preventive efforts. This review highlights the critical need for ongoing interdisciplinary research and collaboration to strengthen preparedness and response strategies against emerging infectious threats.

Neurobiological Alterations Induced by SARS-CoV-2: Insights from Variant-Specific Host Gene Expression Patterns in hACE2-Expressing Mice

Since the onset of the COVID-19 pandemic, various severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) variants have emerged. Although the primary site of SARS-CoV-2 infection is the lungs, it can also affect the brain and induce neurological symptoms. However, the specific effects of different variants on the brain remain unclear. In this study, a whole-transcriptome analysis was conducted using the brain tissues of K18-hACE2 mice infected with the ancestral B.1 (Wuhan) variant and with major SARS-CoV-2 variants of concern, including B.1.1.7 (Alpha), B.1.351 (Beta), B.1.617.2 (Delta) and B.1.529 (Omicron). After sequencing, differential gene expression, gene ontology (GO) and genome pathway enrichment analyses were performed. An Immune Cell Abundance Identifier (ImmuCellAI) was used to identify the abundance of different cell populations. Additionally, RT-qPCR was used to validate the RNA-seq data. The viral load and hierarchical clustering analyses divided the samples into two different clusters with notable differences in gene expression at day 6 post-infection for all variants compared to the control group. GO and the Kyoto Encyclopedia of genes and genomes enrichment analyses revealed similar patterns of pathway enrichment for different variants. ImmuCellAI revealed the changes in immune cell populations, including the decrease in CD4+ T and B cell proportions and the increase in CD8+ T and dendritic cell proportions. A co-expression network analysis revealed that some genes, such as STAT1, interleukin-6 (IL-6) and tumor necrosis factor alpha (TNF-α), were dysregulated in all variants. A RT-qPCR analysis for IL-6, CXCL10 and IRF7 further validated the RNA-seq analysis. In conclusion, this study provides, for the first time, an extensive transcriptome analysis of a K18-hACE2 mouse brain after infection with major SARS-CoV-2 variants.

Public perception of COVID-19 in Saudi Arabia during the Omicron wave: recommendations for policy improvement

Background

The emergence of new SARS-CoV-2 variants makes it difficult to forecast potential epidemiological changes. This study investigates Saudi citizens' perceptions of COVID-19 during the Omicron wave.

Methods

We conducted a cross-sectional study using an online survey and a convenience sample of 746 participants. The survey included questions about demographics, anxiety levels, and perception of COVID-19 during the Omicron wave.

Results

Our findings revealed that 27.3% of the participants believed that COVID-19 cases would decrease, while 30.2% believed that cases would increase; the remaining 42.5% were uncertain. When asked about the primary reasons for expecting a rise in COVID-19 cases, the two most frequently cited causes were non-adherence to prevention measures (74.7%) and the high transmissibility of the virus (66.7%). Conversely, when asked about the primary reasons for expecting a decrease in COVID-19 cases, participants cited the availability of free vaccines (60.3%), government measures (59.9%), compliance with preventive measures (57.4%), and health awareness programs (44.1%). Multivariate logistic regression analysis indicated that anxiety about COVID-19 (AOR = 1.23, 95% CI: 1.15-1.32) and education level (AOR = 1.58, 95% CI: 1.11-2.25) were significant predictors of respondents' expectations of increases or decreases in COVID-19 cases (p < 0.05). Around 46.2% of participants were moderately to highly worried about the reinstatement of lockdowns, while 36.2% reported moderate to high levels of anxiety related to COVID-19. Ordinal logistic regression analysis showed that respondents who reported higher levels of worry about the reinstatement of lockdowns were 1.28 times more likely to experience higher levels of anxiety related to COVID-19 (p < 0.05). A few participants were hesitant to adhere to preventive measures because they had already been vaccinated or believed that COVID-19 was not real or severe. This hesitancy raises public health concerns, suggesting that some individuals may underestimate the risks associated with COVID-19 and future pandemics.

Conclusion

This study provides valuable insights into how Saudi citizens perceived COVID-19 during the Omicron wave. Understanding these perceptions can guide the development of public health policies, optimize resource allocation, help control the potential transmission of viral variants, and enhance preparedness for future pandemics.

Outcomes of pregnant ICU patients with severe COVID-19 pneumonia in Qatar during the three waves of the COVID-19 pandemic: A retrospective cohort study

Introduction

Pregnant women are considered a high-risk group for COVID-19 infection/pneumonia as they are known to be more vulnerable to viral infections. They require close monitoring and appropriate timely intervention to minimize the impact on both the mother and the fetus. Although the more prevalent Omicron variant led to fewer severe infections and fewer intensive care unit (ICU) admissions globally during the third wave, the effect on pregnant women and pregnancy outcomes was unknown. The vaccination campaign was thoroughly established by the third wave of the pandemic in Qatar. This retrospective descriptive cohort study investigates the characteristics, hospital stay, interventions, vaccination status, and fetal and maternal outcomes of patients admitted to the ICU with severe COVID-19 pneumonia during each of the three COVID-19 waves in Qatar.

Methods

The inclusion criteria were all pregnant patients with a positive polymerase chain reaction antigen test result and/or defined radiological changes at the time of admission that subsequently required admission to the ICU for 24 hours or more. Data were collected from the medical records and chart reviews of patients admitted to Hamad Medical Corporation with COVID-19 pneumonia from March 1, 2020 to February 28, 2022.

Results

The study included a total of 54 pregnant women. In contrast, during the third wave, the number of patients admitted to the ICU was significantly less than in the first wave. The mean gestational age at presentation for each of the three waves was 213.5, 212, and 245 days, respectively. No pregnant women were vaccinated during the first two waves. However, during the third wave, 90.9% of patients admitted to the ICU were vaccinated. The average length of stay in hospital was (mean ± standard deviation) 22.0 ± 27.6, 15.5 ± 7.8, and 5.0 ± 6.3 days for each of the waves, respectively, and the average length of ICU stay was 13.4 ± 20.9, 6.3 ± 5.5, and 3 ± 2.5 days, respectively. The most common chest X-ray finding on admission was bilateral infiltrates. During the third wave, only one patient required a high-flow nasal cannula. As the severity of the disease increased, the patients received more invasive respiratory support and had a higher likelihood of a preterm delivery. Vaccination status correlated with a significantly higher birth weight (mean weight 3.14 kg). However, it was not associated with better maternal outcome.

Conclusion

This extension study of the COVID-19 patients admitted to the ICU in Qatar during all three waves suggests that those admitted to the ICU with COVID-19 pneumonia are more likely to require close monitoring and appropriate interventions to minimize adverse outcomes for both the mother and the fetus. Our data may suggest that vaccination in these patients may contribute to reducing the use of respiratory support modalities for those admitted to the ICU and shortening the length of hospital stay. Overall, there was no statistical significance between vaccination and maternal outcome.

Nanomaterials in Agriculture: A Pathway to Enhanced Plant Growth and Abiotic Stress Resistance

Nanotechnology has emerged as a transformative field in agriculture, offering innovative solutions to enhance plant growth and resilience against abiotic stresses. This review explores the diverse applications of nanomaterials in agriculture, focusing on their role in promoting plant development and improving tolerance to drought, salinity, heavy metals, and temperature fluctuations. The method classifies nanomaterials commonly employed in plant sciences and examines their unique physicochemical properties that facilitate interactions with plants. Key mechanisms of nanomaterial uptake, transport, and influence on plants at the cellular and molecular levels are outlined, emphasizing their effects on nutrient absorption, photosynthetic efficiency, and overall biomass production. The molecular basis of stress tolerance is examined, highlighting nanomaterial-induced regulation of reactive oxygen species, antioxidant activity, gene expression, and hormonal balance. Furthermore, this review addresses the environmental and health implications of nanomaterials, emphasizing sustainable and eco-friendly approaches to mitigate potential risks. The integration of nanotechnology with precision agriculture and smart technologies promises to revolutionize agricultural practices. This review provides valuable insights into the future directions of nanomaterial R&D, paving the way for a more resilient and sustainable agricultural system.

Synthetic approaches for novel 3-heteroaryl-4-hydroxy-1-methylquinoline-2(1H)one: spectroscopic characterization, molecular docking and DFT investigations

Ring opening and recyclization reactions with 4-hydroxy-6-methyl-3-nitro-2H-pyrano[3,2-c]quinoline-2,5(6H)-dione (1) was examined towards some carbon nucleophilic reagents. Treatment of key precursor 1 with cyanoacetamide, malononitrile dimer and 1H-benzimidazol-2-ylacetonitrile afforded pyridines 2, 3 and pyrido[1,2-a]benzimidazole 4, respectively. Reaction of compound 1 with 5-amino-2,4-dihydro-3H-pyrazol-3-one and 5-amino-3-methyl-1H-pyrazole furnished pyrazolo[3,4-b]pyridine derivatives 5 and 6. Further, pyrido[2,3-d]pyrimidines 7-9 were synthesized from recyclization of compound 1 with some 6-aminouracil derivatives. Compounds 2-4 demonstrated favorable efficacy in HepG-2 liver cancer cells comparable to reference drug (cisplatin), exhibiting IC50 values of 8.79-17.78 μM L-1. The optimized geometrical configurations of the synthesized compounds were determined, using DFT calculations conducted at the B3LYP/6-311++G(d,p) level, for computing various parameters including molecular electrostatic potential (MEP), global reactivity indices, frontier molecular orbital (FMO) analysis, and nonlinear optical (NLO) characteristics. The obtained results revealed that, compound 3 exhibits the smallest energy gap (ΔE = 2.783 eV), while compound 9 presents the largest energy gap (ΔE = 3.995 eV). Also, compound 9 with a hardness value (η) of 1.998 eV demonstrated greater hardness and stability compared to other compounds, whereas compound 3 with a softness value (S) of 0.719 eV-1, is comparatively softer and more reactive. The experimental infrared (IR) and nuclear magnetic resonance (NMR) spectra of the current compounds were compared with the simulated spectra derived from DFT computations, revealing a good agreement. SwissADME analyses suggested that all prepared compounds adhere to the Lipinski, Ghose, and Veber principles fitting to drug likeness. Utilizing the topoisomerase IIβ protein (PDB ID: 4G0U) as a receptor, molecular docking analyses were conducted to investigate the binding interactions of the synthesized compounds and correlated with their anticancer efficacy. Further, MEP surfaces of the studied compounds were analyzed to ascertain the reactive sites appropriated to electrophilic and nucleophilic attacks. The theoretical investigation suggests that the synthesized compounds possess potential applicability for future NLO applications.

Clean Label Approaches in Cheese Production: Where Are We?

The Clean Label concept has gained significant traction in the cheese industry due to consumer preferences for minimally processed cheeses free from synthetic additives. This review explores different approaches for applying Clean Label principles to the cheese industry while maintaining food safety, sensory quality, and shelf life. Non-thermal technologies, such as high-pressure processing (HPP), pulsed electric fields (PEF), ultra-violet (UV), and visible light (VL), are among the most promising methods that effectively control microbial growth while preserving the nutritional and functional properties of cheese. Protective cultures, postbiotics, and bacteriophages represent microbiological strategies that are natural alternatives to conventional preservatives. Another efficient approach involves plant extracts, which contribute to microbial control, and enhance cheese functionality and potential health benefits. Edible coatings, either alone or combined with other methods, also show promising applications. Despite these advantages, several challenges persist: higher costs of production and technical limitations, possible shorter shelf-life, and regulatory challenges, such as the absence of standardized Clean Label definitions and compliance complexities. Further research is needed to develop and refine Clean Label formulations, especially regarding bioactive peptides, sustainable packaging, and advanced microbial control techniques. Addressing these challenges will be essential for expanding Clean Label cheese availability while ensuring product quality and maintaining consumer acceptance.

Real-world effectiveness and safety of oral Azvudine versus Paxlovid for COVID-19 in patients with kidney disease: a multicenter, retrospective, cohort study

BACKGROUND

Patients with kidney disease (KD) are at high risk of contracting COVID-19 and developing severe disease. There is still a lack of guidance regarding the treatment of COVID-19 in patients with KD. The safety and effectiveness of Azvudine in treating COVID-19 patients with KD remain unknown.

METHODS

This study included 32,864 COVID-19 patients from nine centers in Henan Province, China. After applying the exclusion criteria and 2:1 propensity score matching, 438 and 219 participants in the Azvudine and Paxlovid groups, respectively, were subjected to analysis.

RESULTS

Kaplan-Meier analysis revealed no significant differences in all-cause death or composite disease progression between the Azvudine and Paxlovid groups (all p values > 0.05). The same results were obtained in the Cox regression analysis after baseline characteristics adjustment. Three different sensitivity analyses contributed to the robustness of these findings. Subgroup analysis revealed that patients treated with Azvudine had a lower risk of composite disease progression than patients treated with Paxlovid did among patients with moderate disease (p = 0.016, HR: 0.51, 95% CI: 0.27-0.96). Safety data indicated that there was no difference in the incidence of most adverse events. Compared with the Paxlovid group, the Azvudine group had a lower incidence of hypophosphatemia (p = 0.008) and a lower PLT count (p = 0.045). Moreover, during the 15-day follow-up since drug administration, higher concentrations of lymphocytes were detected in the Azvudine group.

CONCLUSIONS

This study is the first to report that the safety and effectiveness of Azvudine are not inferior to those of Paxlovid in COVID-19 patients with KD. This study provides additional treatment options for COVID-19 patients with KD.

A Review of CAC-717, a Disinfectant Containing Calcium Hydrogen Carbonate Mesoscopic Crystals

Recent studies on utilizing biological functions of natural substances that mimic the mesoscopic structures (nanoparticles of about 50 to 500 nm) found in plant growth points and coral skeletons have been reported. After the calcium hydrogen carbonate contained in materials derived from plants and coral are separated, the crystals of the mesoscopic structure can be reformed by applying a high voltage under a specific set of conditions. A suspension of these mesoscopic crystals in water (CAC-717) can be used as an effective disinfectant. CAC-717 exhibits universal virucidal activity against both enveloped and non-enveloped viruses as well as bactericidal and anti-prion activity. Moreover, in comparison to sodium hypochlorite, the potency of CAC-717 as a disinfectant is less susceptible to organic substances such as albumin. The disinfection activity of CAC-717 is maintained for at least 6 years and 4 months after storage at room temperature. CAC-717 is non-irritating and harmless to humans and animals, making it a promising biosafe disinfectant. This review explores the disinfection activity of CAC-717 as well as the potential and future uses of this material.

Virtual perspectives of sanguinarine on cancer prevention and treatment through molecular dynamic study

Cancer prevention involves resisting cancer development at initial stages, retarding angiogenesis and initiating cancer cell apoptosis. Through the use of virtual screening, binding free energy calculations, and molecular dynamics simulations, we were able to identify compounds with potential anticancer activity."During the virtual screening process, compounds with promising drug-like properties were chosen using the Lipinski rule of five, and their binding affinities were evaluated by docking studies. In-silico activity of six different phytochemicals against established cancer specific proteins (NF-kB, p53, VEGF, BAX/BCl-2, TNF-alpha) were performed out of which p53, VEGF, BCl-2 has shown significant results. Sanguinarine has shown good docking score of -9.0 with VEGF and - 8.8 with Bcl-2 receptor and has been selected for molecular dynamics simulation. The results of Molecular Dynamics Simulations (MD) studies showed that RMSD and RMSF values of sanguinarine within an acceptable global minima (3-5.5 Å) for p53, VEGF, BAX/BCl-2. The computational models employed in this study produced important insights into the molecular mechanisms via which Sanguinarine prevents cancer by acting against p53, VEGF, and BCl-2 and by blocking the angiogenic, apoptotic, and proliferative pathways involved in the formation of cancer. The results suggest that the pharmacological activity of the selected phytomolecule (sanguinarine) is a promising avenue for cancer prevention.

Graphical Abstract

The Multifaceted Role of 3D Printed Conducting Polymers in Next-Generation Energy Devices: A Critical Perspective

The increasing human population is leading to growing consumption of energy sources which requires development in energy devices. The modern iterations of these devices fail to offer sustainable and environmentally friendly answers since they require costly equipment and produce a lot of waste. Three-dimensional (3D) printing has spurred incredible innovation over the years in a variety of fields and is clearly an attractive option because technology can create unique geometric items quickly, cheaply, and with little waste. Conducting polymers (CPs) are a significant family of functional materials that have garnered interest in the research community because of their high conductivity, outstanding sustainability, and economic significance. They have an extensive number of applications involving supercapacitors, power sources, electrochromic gadgets, electrostatic components, conducting pastes, sensors, and biological devices thanks to their special physical and electrical attributes, ease of synthesis, and appropriate frameworks for functional attachment. The use of three-dimensional printing has become popular as an exact way to enhance prepared networks. Rapid technological advancements are reproducing patterns and building structures that enable automated deposition of polymers for intricate structures. Different composites have been created using oxides of metals and carbon to improve the efficiency of the CPs. Such composites have been actively investigated as exceptional energy producers for low-power electronic techniques, and by increasing the range of applications, they have verified increasing surface area, electronic conductivity, and remarkable electrochemical behavior. The hybridization with such materials has produced a range of equipment, such as gathering energy, sensors, protective gadgets, and storage facilities. A few possible uses for these CPs such as sensors and energy storage devices are discussed in this perspective. We also provide an overview of the key strategies for scientific and industrial applications with an eye on potential improvements for a sustainable future.

Non-Candida mycosis in Gulf Cooperation Council (GCC) countries: perspective of a low-incidence region

BACKGROUND

Fungal pathogens are ubiquitous microorganisms that are implicated in a wide range of infections, affecting individuals with underlying health conditions and immune suppression therapy; however, immunocompetent individuals may also be at risk. Among these infections, many are caused by molds and yeasts other than Candida and are recognized in clinical practice, such as aspergillosis, mucormycosis, fusariosis, phaeohyphomycosis, and basidiobolomycosis, among others, each presents different clinical manifestations and requires clinical management specific to the site of involvement. Although pathogenic fungal contaminants and potential sources of mycosis in humans are plentiful in Gulf Cooperation Council (GCC) countries, epidemiological reports regarding mycosis in the region are scarce.

AIM

The aim of this review is to shed some light on the epidemiology of clinically associated molds and yeasts other than Candida and to survey all related case reports and epidemiological studies conducted in the GCC over the past 10 years.

METHODS

A comprehensive search of the Medline (PubMed) and Scopus databases was conducted using the following keywords: Aspergillosis, Mycosis, Mucormycosis, Fusarium, Kuwait, Bahrain, Saudi Arabia, Qatar, Oman and the United Arab Emirates. A timeframe was set to include only articles that were published from 2014 to 2024.

RESULTS

One hundred thirty-five of the 1563 articles examined fulfilled the purpose of this review. Most studies were in Saudi Arabia (45%), Qatar (18%) and Kuwait (16%). Mucormycosis, aspergillosis, phaeohyphomycosis and basidiobolomycosis were among the most commonly reported fungal infections in the GCC, with corresponding mortality rates of 53%, 37%, 69% and 24%, respectively. The average estimations of non-Candida fungal infections indicate a low regional incidence in comparison with global estimations.

CONCLUSION

Awareness and a high index of suspicion are warranted in successfully managing non-Candida mycosis. More specific immunological and molecular markers are needed for differential diagnosis to rule out fungal infections. Additionally, incorporating non-Candida mycosis-related antifungal resistance surveys in GCC national surveillance efforts should be enforced, especially when considering the increase in global mycosis rates.

Developing and validating of an English questionnaire to assess knowledge, attitudes, and practices regarding Marburg virus disease (EKAP-MVD): A cross-sectional study

Knowledge, attitudes, and practices (KAP) of the general population toward Marburg Virus Disease (MVD) have a crucial impact on control and prevention strategies, particularly during outbreaks. The current study aimed to develop, culturally adapt, and validate a questionnaire for assessing KAP toward MVD (EKAP-MVD). A cross-sectional study using face-to-face interview and an anonymous online survey was conducted from March 13 to April 28, 2023 in 8 Sub-Saharan African countries (Ethiopia, Ghana, Kenya, Lesotho, Nigeria, Senegal, South Africa, and Tanzania). Internal consistency was assessed using Cronbach's alpha, split-half reliability, and Spearman-Brown coefficient. We assessed EKAP-MVD face and content validity. Construct validity was determined through convergent and discriminant validity, as well as exploratory and confirmatory factor analyses. A total of 510 participants were included: 51.6% were females, 46.5% were aged 18 to 25 years, 65.5% were residents in urban areas, 52.9% did not have university education, 58.6% were single, 34.7% were students, and 15.7% worked in the medical field. The Cronbach's alpha of the questionnaire was 0.877. All questions showed a statistically significant correlation with their latent factors (P < .05), indicating that the questionnaire had good convergent validity. The correlations between domains were either weak positive or negative, indicating discriminate validity. The KMO measure of sampling adequacy for factor analysis was 0.932 and Bartlett's test of sphericity was significant (P < .0001). The elbow point of the scree plot reveals that the number of factors that were most important and should be kept for further analysis was 3. Confirmatory factor analysis model fit was as follows: normed Chi-square (χ2) = 1.301, the root mean square error of a pproximation (RMSEA) = 0.038, goodness-of-fit index and comparative fit index > 0.9, and root mean square residual (RMR) < 0.08. In conclusion, the developed questionnaire had good psychometric properties and can be used to assess KAP about MVD.

Food hygiene practice and associated factors among food handlers working in food establishments in sub-Saharan Africa: a systematic review and meta-analysis

INTRODUCTION

Food hygiene practices are crucial to avoid foodborne illness and improve human well-being. Millions of people get sick, and many of them pass away due to eating unhealthy food. Foodborne diseases are still a public health problem in developing countries.

OBJECTIVE

This study aimed to determine the prevalence and factors associated with food hygiene practices among food handlers in sub-Saharan Africa.

METHODS

An extensive search was conducted using various databases including PubMed, Science Direct, African Journal Online, and Google Scholar. The search results were then extracted using Microsoft Excel. The data analysis was conducted using STATA version 14. Publication bias was checked by funnel plot, and more objectively through Begg and Egger regression test, with P < 0.05 considered to indicate potential publication bias. A random effect model was used to calculate the pooled prevalence of hygienic food handling practices. Sub-group analysis was done by country and study site.

RESULTS

To estimate the pooled prevalence of food hygiene practices in sub-Saharan Africa, 42 reviewed studies and 12,367 study participants were included. The pooled prevalence of food hygiene practices among food handlers in sub-Saharan Africa was found to be 50.68% (95% CI: 45.35, 56.02) in this study. Factors associated with food hygiene practices included lack of food safety training (OR = 2.14 95% CI: 0.68, 6.76), negative attitude (OR: 2.36, 95% CI: 1.36, 4.09), and lack of regular medical checkups (OR: 2.66, 95% CI: 1.52, 4.65) among food handlers.

CONCLUSION

This research found that only half of sub-Saharan Africa's food handlers had good food hygiene practices. Lack of food safety training, a lack of regular medical checkups, and unfavorable attitudes toward food hygiene practices were factors contributing to food hygiene practices. Thus, the authors recommended that food workers receive food safety training about food hygiene and safety procedures.

Evaluating geographic accessibility to COVID-19 vaccination across 54 countries/regions

BACKGROUND

The COVID-19 pandemic has revealed significant disparities in global vaccine accessibility, particularly affecting low and middle-income countries (LMICs). However, current research on COVID-19 vaccine accessibility primarily focuses on individual countries or high-income countries (HIC). We aimed to evaluate geographic accessibility to COVID-19 vaccination on a multicountry scale, covering comparisons across LMICs and HICs. Additionally, we explored the potential economic factors related to accessibility and their impacts on health outcomes.

METHODS

We collected population data at a 1 km resolution and geocoded all vaccination sites across the selected countries/regions. Four measures were used to evaluate vaccine accessibility from different perspectives: population coverage with varying travel time thresholds, driving time to vaccination sites, the number of sites within a 30-min threshold and a geographic accessibility index using enhanced two-step floating catchment area method. Finally, we explored the relationships between geographic accessibility and several factors: gross domestic product per capita, vaccination uptake and mortality.

FINDINGS

We found substantial disparities in vaccine accessibility across the selected countries/regions. In 24.07% of these countries/regions, over 95% of the population can access the nearest vaccination services within 15 min. In contrast, in countries/regions such as Manitoba (Canada), Zimbabwe and Bhutan, less than 30% of the population can reach these sites within 60 min. Underserved areas, termed 'vaccine deserts', were identified in both HICs and LMICs. We found that countries/regions with higher vaccine accessibility tend to achieve higher vaccination rates, whereas those with lower vaccine accessibility are likely to experience substantial increases in COVID-19 mortality rates.

CONCLUSION

LMICs require enhanced attention to improve geographic accessibility to vaccination. Additionally, there are internal disparities in accessibility within both HICs and LMICs. National public health officials and global health initiatives are suggested to prioritize 'vaccine deserts' and to ensure equitable vaccine access in future pandemics.

Revolutionizing Cancer Immunotherapy: Emerging Nanotechnology-Driven Drug Delivery Systems for Enhanced Therapeutic Efficacy

Cancer immunotherapy is an innovative way of treating cancer by stimulating individual cells to overcome cancer. Widespread biomedical studies were carried out with the aim of exploring immunotherapy cancer therapeutics, and this review spotlights some mechanisms in which it was developed, namely immune checkpoint inhibitors (E.G PD-1/PD-L1, CTLA-4), adoptive cell therapy (e.g., CAR T-cell therapy), and cancer vaccines. Although it has shown clinical benefit in a number of cancer types, including melanoma and non-small-cell lung cancer, several challenges have dampened enthusiasm for this approach, from the differing patient response rates to toxicities. Nanotechnology in drug delivery systems must play a role in overcoming the same. Nanotechnology enables increased specificity and controlled drug release, improved solubility and bioavailability, can treat the tumor specifically, and localized drug delivery at the disease site decreases systemic toxicity. The review also features advances in the construction of lipid-based, polymeric, and inorganic nanoparticles that improve drug stability and allow the delivery of cotherapeutic agents. Nanotechnology-based delivery systems can be used alone or in combination with immunotherapy to assist in improving the immune response, gaining access to the tumor microenvironment, and overcoming biological barriers. Thus, the nano-DDS were both safe and effective in preclinical studies, and ongoing clinical trials have shown that they are capable of increasing the therapeutic index of anticancer drugs. Lastly, the review also discusses current challenges and regulatory issues in advancing these technologies and highlights the importance of further research to devise appropriate methodology for efficient functionalization of nanotechnology for individualized cancer solutions in cancer treatment.

Cytotoxic and immunomodulatory properties of Tinospora cordifolia, Boerhaavia diffusa, Berberis aristata, and Ocimum basilicum extracts against HPV-positive cervical cancer cell line

BACKGROUND

Cervical cancer remains a significant public health concern, especially for low-and middle-income countries. This study explores the dual potential of medicinal plant extracts as both anticancer agents and immunomodulators, particularly in HPV-positive cervical cancer, while also addressing the limitations of conventional chemotherapy.

METHODS

Extracts from Tinospora cordifolia, Boerhaavia diffusa, Berberis aristata, and Ocimum basilicum were tested on CaSki and HEK 293 cells alongside cisplatin. Cytotoxicity, genotoxicity, cell migration, HPV DNA inhibition, IFNG secretion, and cell cycle modulation were assessed using established biochemical and immunological assays, including qPCR, ELISA, and flow cytometry.

RESULTS

Among the extracts, B. aristata demonstrated the strongest anticancer effects on cancer cells while exhibiting minimal impact on normal cells, highlighting its therapeutic potential. It also significantly reduced cell migration and has synergistic affect with cisplatin. B. diffusa emerged as the most effective in inhibiting HPV 16 DNA, suggesting its role in viral suppression. Immunomodulatory analysis revealed that T. cordifolia and O. basilicum significantly enhanced IFNG secretion, indicative of robust immune activation. Each tested extracts induced G0/G1 phase cell cycle arrest, with T. cordifolia showing the most pronounced effect.

CONCLUSIONS

This study highlights the novel therapeutic promise of integrating plant extracts into HPV-positive cervical cancer management. B. aristata stands out for its cytotoxicity and anti-migration properties, while T. cordifolia offers significant immunomodulatory benefits. These findings pave the way for further research into combining natural products with conventional therapies for safer, more effective cancer treatments.

Novel self-assembled spirochiral nanofluorescent probe for fipronil detection efficiently by PET mechanism

A novel spirochiral compound S-SPINOL-Y1 (S-6,6'-bis (thiophen-2-yl)-2,2', 3,3'-tetrahydro-1,1'-spirobis[indinee]-7,7'-diol) was synthesized via a Suzuki reaction and self-assembled into nanospheres in ethanol solution. Nano or micron vesicles could be formed by changing the concentration of ethanol solvent. The resulting nanoprobe demonstrated rapid and effective recognition of fipronil (FIP) through the photoinduced electron transfer effect (PET mechanism), as evidenced by complete fluorescence quenching. Concurrently, the spiral chiral S-SPINOL-Y1 and FIP co-assembled into vein-like nanotubes within the ethanol solution by covalent bonding and intermolecular hydrogen bonding.

Computational approaches: atom-based 3D-QSAR, molecular docking, ADME-Tox, MD simulation and DFT to find novel multi-targeted anti-tubercular agents

Tuberculosis (TB) has become the biggest threat to human society because of the rapid rise in resistance to the causative bacteria Mycobacterium tuberculosis (MTB) against the available anti-tubercular drugs. There is an urgent need to design new multi-targeted anti-tubercular agents to overcome the resistance species of MTB through computational design tools. With this aim in mind, we performed a combination of atom-based three-dimensional quantitative structure-activity relationship (3D-QSAR), six-point pharmacophore (AHHRRR), and molecular docking analysis on a series of fifty-eight anti-tubercular agents. The created QSAR model had a R2 value of 0.9521, a Q2 value of 0.8589, and a Pearson r-factor of 0.8988, all of which are statistically significant. This means that the model was effective at making predictions. We performed the molecular docking study for the data set of compounds with the two important anti-tubercular target proteins, Enoyl acyl carrier protein reductase (InhA) (PDBID: 2NSD) and Decaprenyl phosphoryl-β-D-Ribose 20-epimerase (DprE1) (PDBID: 4FDO). We used the similarity search principle to do virtual screening on 237 compounds from the PubChem database in order to find strong anti-tubercular agents that act against multiple targets. The screened compound, MK3, showed the highest docking score of -9.2 and -8.3 kJ/mol towards both the target proteins InhA and DprE1, which were picked for a 100 ns molecular-dynamic simulation study using GROMACS. The data showed that the compound MK3 was thermodynamically stable and effectively bound to both target proteins in their active binding pockets without much movement. The analysis of the highest occupied molecular orbital (HOMO), lowest unoccupied molecular orbital (LUMO), and energy gap predicts the molecular reactivity and stability of the identified molecule. Based on the result of the above studies, the proposed compound MK3 can be successfully used for the development of a novel multi-targeted anti-tubercular agent with high binding affinity and favourable ADME-T properties.

Monkeypox awareness and public health challenges in conflict affected syria 2024

Monkeypox (MPOX) is a zoonotic viral disease that has re-emerged and spread to non-endemic regions, drawing global attention. Understanding the knowledge, attitudes, and practices (KAP) of vulnerable populations, particularly in conflict-affected areas, is crucial for effective public health responses. This community-based cross-sectional study evaluates the KAP of the general Syrian population regarding MPOX, focusing on areas affected by conflict. The study was conducted between October 25 and November 22, 2024, using a culturally adapted and validated structured online and paper-based questionnaire. A total of 2,035 responses were collected. The sample included predominantly female participants (63.8%), aged 21-30 years (41.9%), mostly married (73.4%), and urban residents (72.4%). Statistical analysis included confidence intervals (95%) and significance levels (p < 0.05). The study revealed that while 80.3% of participants understood causative factors, 81.2% transmission, 89% prevention, and 78.2% symptoms, significant knowledge gaps were identified in vaccination (13.4%) and diagnostic tests (42.7%), with 58.9% of respondents demonstrating poor overall knowledge. Negative attitudes were reported in 65.8% of participants, although urban residents exhibited slightly more positive attitudes. Good practices were observed in 73.6% of respondents, with common behaviors including isolation and frequent handwashing (58.8%). However, practices did not significantly differ across genders or marital status. Higher knowledge scores were associated with males (OR = 1.721, 95% CI= [1.42-2.07]), higher education levels (OR = 1.324, 95% CI= [1.07-1.62]), and higher incomes (OR = 2.550, 95% CI= [1.56-4.15]). The conflict-affected context likely exacerbated knowledge gaps and negative attitudes, underscoring the urgent need for culturally tailored educational campaigns and public health initiatives. These efforts are critical for improving MPOX preparedness in vulnerable populations.

Botulinum Neurotoxins as Two-Faced Janus Proteins

Botulinum neurotoxins are synthetized by anaerobic, spore-forming bacteria that inhibit acetylcholine release at the level of the neuromuscular and autonomic cholinergic junctions, thus inducing a series of symptoms, the most relevant of which is flaccid paralysis. At least seven serotypes and over 40 subtypes are known, and they are among the most poisonous natural substances. There are different forms of botulism according to the route of contamination, but the clinical manifestation of descending symmetric flaccid paralysis is consistent, regardless of the route of contamination. It is very severe and potentially lethal. The induced paralysis lasts as long as the toxin is active, with variable length, according to the serotype of the toxin. This transient activity, as well as the precise mechanism of action, are the basis for the rationale behind use of the toxin in therapy for several clinical conditions, particularly, spastic conditions, as well as chronic migraine and axillary hyperhidrosis. The toxin has also been approved for the reduction in facial wrinkles; all these clinical applications, coupled with the toxin's risks, have earned botulinum the title of a two-faced Janus protein. No approved vaccines are currently available, andthe only approved antidotes are the human specific intravenous immunoglobulins for infant botulism and the heptavalent equine immunoglobulins/(F(ab')2 for adults. Nanobodies, which show great promise, may penetrate neuronal cells to inactivate the toxin within the cytoplasm, and Ebselen, a non-toxic, economic, small-molecule inhibitor, has the characteristic of inhibiting the toxin irrespective of the serotype.

Laboratory and field assays indicate that a widespread no-see-um, Culicoides furens (Poey) is susceptible to permethrin

The recent emergence of Oropouche virus (OROV) highlights the importance of understanding insecticide susceptibility in the genus Culicoides (Diptera: Ceratopogonidae). In addition to the vector of OROV, this genus contains many other species that are biting nuisances and vectors of pathogens that affect humans, livestock, and wildlife. With adulticides as the primary method of Culicoides control, there is growing concern about insecticide resistance, compounded by the lack of tools to monitor Culicoides susceptibility. We adapted the Centers for Disease Control and Prevention (CDC) bottle bioassay and field cage trial methods, typically used to monitor insecticide susceptibility in mosquitoes and formulated adulticide efficacy, to evaluate permethrin susceptibility in the widely distributed coastal nuisance species, Culicoides furens. Permethrin caused 100% mortality in C. furens in field and laboratory assays. We identified a diagnostic dose (10.75 µg) and time (30 min) that resulted in 100% mortality in CDC bottle bioassays. Additionally, we determined that no-see-um netting is an effective mesh for field cage trials, allowing for the accurate assessment of Culicoides susceptibility to ultra-low volume applications of formulated adulticides like Permanone 30-30, a widely used adulticide. These methodologies offer essential tools for assessing Culicoides susceptibility, which is crucial for managing populations of Culicoides and preventing the spread of OROV and other pathogens.

Genetic advancements in breast cancer treatment: a review

Breast cancer (BC) remains a leading cause of cancer-related deaths among women globally, highlighting the urgent need for more effective and targeted therapies. Traditional treatments, including surgery, chemotherapy, and radiation, face limitations such as drug resistance, metastasis, and severe side effects. Recent advancements in gene therapy, particularly CRISPR/Cas9 technology and Oncolytic Virotherapy (OVT), are transforming the BC treatment landscape. CRISPR/Cas9 enables precise gene editing to correct mutations in oncogenes like HER2 and MYC, directly addressing tumor growth and immune evasion. Simultaneously, OVT leverages genetically engineered viruses to selectively destroy cancer cells and stimulate robust antitumor immune responses. Despite their potential, gene therapies face challenges, including off-target effects, delivery issues, and ethical concerns. Innovations in delivery systems, combination strategies, and integrating gene therapy with existing treatments offer promising solutions to overcome these barriers. Personalized medicine, guided by genomic profiling, further enhances treatment precision by identifying patient-specific mutations, such as BRCA1 and BRCA2, allowing for more tailored and effective interventions. As research progresses, the constructive interaction between gene therapy, immunotherapy, and traditional approaches is paving the way for groundbreaking advancements in BC care. Continued collaboration between researchers and clinicians is essential to translate these innovations into clinical practice, ultimately improving BC patients' survival rates and quality of life.

The Bidirectional Relationship Between Iron Deficiency Anemia and Chronic Headache Disorders: A Systematic Review and Meta-Analysis

Background and Objective: IDA and chronic headache disorders such as migraines and tension-type headaches are common conditions that significantly affect quality of life. Emerging evidence suggests a bidirectional relationship between these two conditions. This systematic review and meta-analysis aimed to explore and quantify the association between iron deficiency anemia (IDA) and chronic headache disorders, with a focus on understanding the bidirectional nature of this relationship. Methods: A comprehensive literature search was conducted across PubMed, Embase, and Web of Science to identify relevant studies published up until August 10, 2024. Observational studies examining the prevalence, incidence, or association between IDA and chronic headache disorders were included. Data were extracted and assessed for quality using the Newcastle-Ottawa Scale. Meta-analyses were performed using a random-effects model to calculate pooled prevalence rates and risk ratios (RRs), with heterogeneity assessed via the I 2 statistic and meta-regression. A sensitivity analysis was conducted using the leave-one-out approach, and publication bias was evaluated through a funnel plot. Results: The meta-analysis included 13 studies: five studies examined chronic headaches among patients with IDA, and eight studies examined IDA among patients with chronic headaches. The pooled prevalence of chronic headaches among patients with IDA was 38% (95% CI: 15%-69%). In addition, 20% (95% CI: 10%-35%) of patients with chronic headaches were found to have IDA. Anemic patients were found to have a 76% higher risk of developing chronic headaches compared to nonanemic individuals (RR: 1.76; 95% CI: 1.22-2.52). Significant heterogeneity was observed across the studies. Conclusion: This meta-analysis demonstrates a significant association between IDA and chronic headache disorders, with a pooled prevalence of 38% for chronic headaches in IDA patients and 20% for IDA in chronic headache patients. IDA was associated with a 76% higher risk of chronic headaches. Routine screening for IDA in high-risk populations may improve headache outcomes, but further longitudinal studies are needed to establish causality and refine management strategies.

Historic smallpox vaccination and Mpox cross-reactive immunity: Evidence from healthcare workers with childhood and adulthood exposures

In recent years, human mpox has made multiple resurges, prompting public health professionals to consider factors that lead to the increased risk for the reemergence of other orthopoxviruses. Due to the genetic similarity between orthopoxviruses, vaccinia vaccines used to prevent smallpox transmission are also indicated and have been used for mpox infection prevention and control. In this study, cross-reactive immunity for mpox was observed among individuals with self-reported history of smallpox vaccination. Differences in mean antigen response among individuals vaccinated in childhood and adulthood versus individuals vaccinated in childhood only were also observed, supporting the hypothesis that childhood smallpox vaccination may not be sufficient in providing long-lasting protection against multiple orthopoxviruses. These results provide insight on the durability of mpox immunogenic proteins and can be used to inform future studies to assess the benefits of reestablishing vaccinia vaccines as standard recommended immunizations, particularly where orthopoxviruses, such as mpox, are endemic.

H, Figueira FAMDS, Andrade RLM, de Abreu LC. Evolution of COVID-19 in the State of São Paulo: Analysis of Incidence, Mortality and Lethality from 2020 to 2023

INTRODUCTION

COVID-19 is a respiratory disease caused by the SARS-CoV-2 virus, which belongs to the coronavirus family. SARS-CoV-2 is related to other viruses that cause severe acute respiratory syndrome. The emergence of cases of pneumonia of unknown origin triggered the largest viral pandemic in modern times, presenting major challenges to global public health.

OBJECTIVE

To analyze the evolution of the COVID-19 pandemic in the state of São Paulo from 2020 to 2023, focusing on trends in incidence, mortality, and lethality.

METHODS

Ecological study of time series of incidence, mortality and lethality by COVID-19 in the state of São Paulo using Prais-Winsten regression considering the Weekly Percentage Change (WPC) and probability values (p), considering a significance level of 95% (95% CI). To ensure the reliability of the entered data, double-blind typing was performed by different researchers in the same database extracted from the 2024 Ministry of Health Coronavirus dashboard.

RESULTS

From February 2020 and the end of December 2023, 6,763,310 accumulated cases and 182,254 deaths were recorded. Stationary trends were observed for the year 2022, with a reduction in incidence and mortality in the year 2023. However, the epidemiological variable lethality showed a stationary trend.

CONCLUSION

The analysis of the trends in incidence, mortality, and lethality revealed variable dynamics over time, with emphasis on the significant reduction of these indicators in 2023.

Impact of African-Specific ACE2 Polymorphisms on Omicron BA.4/5 RBD Binding and Allosteric Communication Within the ACE2-RBD Protein Complex

Severe acute respiratory symptom coronavirus 2 (SARS-CoV-2) infection occurs via the attachment of the spike (S) protein's receptor binding domain (RBD) to human ACE2 (hACE2). Natural polymorphisms in hACE2, particularly at the interface, may alter RBD-hACE2 interactions, potentially affecting viral infectivity across populations. This study identified the effects of six naturally occurring hACE2 polymorphisms with high allele frequency in the African population (S19P, K26R, M82I, K341R, N546D and D597Q) on the interaction with the S protein RBD of the BA.4/5 Omicron sub-lineage through post-molecular dynamics (MD), inter-protein interaction and dynamic residue network (DRN) analyses. Inter-protein interaction analysis suggested that the K26R variation, with the highest interactions, aligns with reports of enhanced RBD binding and increased SARS-CoV-2 susceptibility. Conversely, S19P, showing the fewest interactions and largest inter-protein distances, agrees with studies indicating it hinders RBD binding. The hACE2 M82I substitution destabilized RBD-hACE2 interactions, reducing contact frequency from 92 (WT) to 27. The K341R hACE2 variant, located distally, had allosteric effects that increased RBD-hACE2 contacts compared to WThACE2. This polymorphism has been linked to enhanced affinity for Alpha, Beta and Delta lineages. DRN analyses revealed that hACE2 polymorphisms may alter the interaction networks, especially in key residues involved in enzyme activity and RBD binding. Notably, S19P may weaken hACE2-RBD interactions, while M82I showed reduced centrality of zinc and chloride-coordinating residues, hinting at impaired communication pathways. Overall, our findings show that hACE2 polymorphisms affect S BA.4/5 RBD stability and modulate spike RBD-hACE2 interactions, potentially influencing SARS-CoV-2 infectivity-key insights for vaccine and therapeutic development.

Quantum chemical treatment, electronic energy in various solvents, spectroscopic, molecular docking and dynamic simulation studies of 2-amino-N-(2-chloro-6-methylphenyl)thiazole-5-carboxamide: A core of anticancer drug

The titled molecule 2-Amino-N-(2-chloro-6-methylphenyl)thiazole-5-carboxamide (ANMC) is a core of anticancer drug dasatinib (leukemia). Its derivatives exhibited bioactivity against breast cancer. Experimentally, the titled compound was described using NMR (1H NMR and 13C NMR), FTIR and UV-visible spectroscopy. The results were compared with the theoretical predictions, showing good agreement such as theoretical NH vibrations showed symmetric stretching and asymmetric stretching at 3429 and 3440 cm-1 respectively, λmax values appear at 305 nm for experimental and 307.75 nm for theoretical observations in acetone medium. Hirshfeld surface analysis well described the secondary internal and external interactions obtained like dnorm and di ranges -1.8551 to 1.4590 and 0.0918 to 2.6756 respectively. Comparing UV-visible spectra obtained in various solvents with the calculated TD-DFT results revealed minimal solvent effects. Molecular electrostatic potential (MEP) map and Fukui functions were employed, which indicated reactive sites of the molecule and the obtained order of nucleophilic reactivity was C16 > C2 > C8 > Cl1 > C22 > C21. The bioactivity profile probability of ANMC was theoretically explored by calculation of electrophilicity index and drug-likeness. Molecular docking of the ANMC molecule was performed with ten receptors to obtain the best ligand-protein interaction and the minimum binding energy obtained was -8.0 kcal/mol. Biomolecular stability of ANMC was investigated by Molecular Dynamic Simulation (MDS). And also the analysis of free energies showed strong interactions between the ligand and the protein.

Structures, bonding aspects and spectroscopic parameters of morin, myricetin, and quercetin with copper/zinc complexes: DFT and TDDFT exploration

CONTEXT

In the present work, DFT/TDDFT techniques is used to analyze structure, bonding, reactivity and electronic transitions of quercetin, morin, myricetin with their metal (Cu and Zn) complexes. In order to comprehend metal complexes and ligands reactivity patterns, we calculated energy gaps between frontier molecular orbitals. Global reactivity characteristics, such as ionization potential, electronegativity (χ), hardness (η), softness (S), electrophilicity index (ω) electron affinity, and chemical potential (μ), were computed based on the FMO energies. Molecular electrostatic potential (MEP) maps were used to identify nucleophilic and electrophilic sites in complexes. Within the examined complexes, TDDFT and NBO analysis shed light on bonding, electronic transitions and stabilizing interactions. Ligands morin, myricetin, and quercetin exhibited higher HOMO-LUMO gap than their corresponding metal complexes, suggesting electron transfer may be faster in the metal complexes. The metal complexes displayed more negative electrostatic potentials. The absorption spectra of the ligands ranged from 258 to 360 nm, whereas their complexes exhibited a broader range from 252 to 1035 nm. These spectra provided important insights into charge transfer and electronic transitions, enhancing our knowledge of electronic and bonding characteristics of such compounds.

METHODS

G16 software is used to optimize all species. B3LYP functional was employed in combination with LanL2DZ basis set for Cu and Zn, and 6-311G(d,p) basis set for other atoms (C, H and O). Natural bond orbital examination was conducted in order to investigate interactions between the filled orbitals of one unit and empty orbitals of other unit. ORCA software was utilized to compute spectral features, incorporating ZORA method to account for relativistic effects. TDDFT studies is carried out using B3LYP functional to calculate excitation energies.

Treatment with the CCR5 antagonist OB-002 reduces lung pathology, but does not prevent disease in a Syrian hamster model of SARS-CoV-2 infection

Since the emergence of SARS-CoV-2 and the COVID-19 pandemic, a wide range of treatment options have been evaluated in preclinical studies and clinical trials, with several being approved for use in humans. Immunomodulatory drugs have shown success in dampening the deleterious inflammatory response seen in severe COVID-19 patients, but there remains an urgent need for development of additional therapeutic options for COVID-19 treatment. A potential drug target is the CCR5-CCL5 axis, and blocking this pathway may protect against severe disease. Here we evaluated whether OB-002, an analog of human CCL5 and a potent antagonist of CCR5, provides therapeutic benefit in SARS-CoV-2 infected Syrian hamsters. Daily treatment with OB-002 altered immune gene transcription in the lungs, and reduced pathology following infection, but did not prevent weight loss or viral replication in the lungs of infected animals, even in combination with the antiviral drug remdesivir. Our data suggest that targeting the CCR5-CCL5 pathway in SARS-CoV-2 infection in hamsters is insufficient to significantly impact disease development in this model.

Listeria monocytogenes use multiple mechanisms to disseminate from the intestinal lamina propria to the mesenteric lymph nodes

Listeria monocytogenes are facultative intracellular bacterial pathogens that cause foodborne disease in humans. The bacteria can use the surface protein InlA to invade intestinal epithelial cells or transcytose across M cells in the gut, but it is not well understood how the bacteria traffic from the underlying lamina propria to the draining mesenteric lymph nodes (MLN). Previous studies indicated that L. monocytogenes associated with both monocytes and dendritic cells in the intestinal lamina propria. We show here that CCR2-/- mice had a significant reduction in Ly6Chi monocytes in the MLN but no change in bacterial burden following foodborne infection; thus, dissemination of L. monocytogenes associated with monocytes is not required for colonization of the MLN. To block CCR7-mediated trafficking of dendritic cells from the lamina propria, we treated mice with anti-VEGFR3 antibody (clone AFL4) prior to and during infection but did not see a change in dendritic numbers in the MLN as had been previously reported with other anti-VEGFR3-specific antibodies. However, increasing the number of circulating dendritic cells by treating mice with rFlt3L resulted in a significant increase in L. monocytogenes in the lymph nodes that drain the small intestine and the spleen. Whole-mount fluorescent microscopy of lymphatic vessels following ligated loop infection revealed both free-floating L. monocytogenes and cell-associated bacteria within lymphatic vessels. Together, these results suggest that L. monocytogenes can use multiple, redundant mechanisms to disseminate from the gut tissue to the MLN.

IMPORTANCE

Consumption of the foodborne bacterial pathogen Listeria monocytogenes results in a wide spectrum of human disease from mild self-limiting gastroenteritis to life-threatening infections of the bloodstream, brain, and placenta. It is not well understood how the bacteria migrate from the intestines to the draining mesenteric lymph nodes, which are thought to serve as the last barrier to prevent systemic infections. Results presented here reveal multiple redundant mechanisms L. monocytogenes can use to disseminate from the ileum or colon to the mesenteric lymph nodes.

A comparative analysis of the binary and multiclass classified chest X-ray images of pneumonia and COVID-19 with ML and DL models

Background

The highly infectious coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2, the seventh coronavirus. It is the longest pandemic in recorded history worldwide. Many countries are still reporting COVID-19 cases even in the fifth year of its emergence.

Objective

The performance of various machine learning (ML) and deep learning (DL) models was studied for image-based classification of the lungs infected with COVID-19, pneumonia (viral and bacterial), and normal cases from the chest X-rays (CXRs).

Methods

The K-nearest neighbour and logistics regression as the two ML models, and Visual Geometry Group-19, Vision transformer, and ConvMixer as the three DL models were included in the investigation to compare the brevity of the detection and classification of the cases.

Results

Among the investigated models, ConvMixer returned the best result in terms of accuracy, recall, precision, F1-score and area under the curve for both binary as well as multiclass classification. The pre-trained ConvMixer model outperformed the other four models in classifying. As per the performance observations, there was 97.1% accuracy for normal and COVID-19 + pneumonia-infected lungs, 98% accuracy for normal and COVID-19 infected lungs, 82% accuracy for normal + bacterial + viral infected lungs, and 98% accuracy for normal + pneumonia infected lungs. The DL models performed better than the ML models for binary and multiclass classification. The performance of these studied models was tried on other CXR image databases.

Conclusion

The suggested network effectively detected COVID-19 and different types of pneumonia by using CXR imagery. This could help medical sciences for timely and accurate diagnoses of the cases through bioimaging technology and the use of high-end bioinformatics tools.

Influence of sleep duration and quality on depression symptoms among nurses during the Omicron outbreak: a cross-sectional survey

BACKGROUND

Nurses who work during the global pandemic are known to experience physical and psychological exhaustion, as well as severe anxiety and depression symptoms. This study aimed to explore the relationships between sleep duration, sleep quality, and depression symptoms among nurses during the outbreak of the Omicron variant.

METHODS

A cross-sectional study was conducted between August 2022 and September 2022. Participants (N = 2140) were evaluated for depression symptoms via the Hospital Anxiety and Depression Scale (HADS), and sleep was evaluated via the Pittsburgh Sleep Quality Index (PSQI), and "short sleep duration" was defined as ≤ 5 h per day. Demographic information was also collected. Binary and multivariate logistic regression was performed to assess the relationships between sleep duration, sleep quality, and depression symptoms.

RESULTS

In total, 2140 nurses were included in this study; 1481 (69.2%) had poor sleep quality, while 866 (40.4%) had depression symptom scores > 7 according to the HADS criteria. Both duration and quality of sleep were significantly correlated with depression symptoms among nurses (P < 0.001). In multivariable analyses adjusted for potential confounders, short sleep duration (≤ 5 h) was associated with an odds ratio (OR) of 2.26 (95% confidence interval [CI] 1.25-4.07), whereas poorer sleep quality was associated with an OR of 1.97 (95% CI 1.32-2.94) for experiencing depression symptoms.

CONCLUSIONS

Following the COVID-19 pandemic, there was a strong association between the sleep quality, sleep duration and depression symptoms among nurses. We recommend the development of targeted interventions to increase sleep duration, enhance sleep quality and alleviate depression symptoms.

α-Amylase inhibitory potential of dihydropyrano coumarins: In silico and DFT analysis

Coumarin derivatives are one of the naturally occurring bioactive molecule. Dihydropyrano coumarins are one of the medicinally important derivatives of coumarin which have been reported to exhibit various bioactivity. However, there are no reports on their antihyperglycemic activities. Herein, we report their antihyperglycemic potential through α-Amylase inhibition. In this study, a series of 24 derivatives of dihydropyrano coumarins was synthesized and studied for alpha-Amylase inhibitory activity. All the derivatives of dihydropyrano coumarins (4a-x) were screened via molecular docking studies against human pancreatic alpha-Amylase (PDB id: 2QV4) followed by DNS assay to check their α-Amylase inhibitory potential. Six derivatives with o-chloro(4b), o-nitro(4c), p-nitro(4o), p-cyano(4q), p-allyloxy(4t) and m, p-dimethoxy(4v) displayed best binding with the α-Amylase enzyme via H-bond and Pi-alkyl interactions. Also, their physicochemical parameters revealed their drug likeliness. Further through DNS assay, minimal inhibitory concentration, i.e., IC50 values of these six derivatives were calculated. All the six derivatives possess IC50 values in the range 5.67 ± 0.02 to 8.92 ± 0.64 µM comparable to standard acarbose (0.85 ± 0.01 µM). Further DFT analysis gave a comparative study of band gap energy of most potent compound 4o with that of standard acarbose.

Supplementary Information

The online version contains supplementary material available at 10.1007/s13205-024-04194-1.

Association of systemic inflammation and long-term dysfunction in COVID-19 patients: A prospective cohort

COVID-19 has significant long-term impacts, including a chronic syndrome known as long-COVID, characterized by persistent symptoms post-recovery. The inflammatory response during acute infection is hypothesized to influence long-term outcomes. This study aimed to identify inflammatory biomarkers predictive of functional outcomes one year after hospital discharge. A prospective cohort study was conducted with 213 COVID-19 patients admitted to ICUs in Southern Brazil between June and November 2020. After exclusions and follow-ups, 109 patients were evaluated for one-year post-discharge. Plasma levels of Th1 (TNF-α, INF-γ, IL-12), Th2 (IL-4, IL-5, IL-6, IL-10, IL-13), and Th17 (IL-17, IL-22) cytokines were measured. Functional outcomes in psychiatric, cognitive, general health, and health perception domains were assessed. Statistical analyses included multivariate regression, regularized partial correlation network analysis, and K-means clustering. We demonstrate that plasma levels of various cytokines, along with demographic and clinical characteristics, can predict four distinct domains of functional outcomes one year following hospital discharge due to COVID-19 and that an hyperinflammatory phenotype was associated with the occurrence of a worse in psychiatric, general health, and health perception domains. The network analysis highlighted complex interconnections among immune markers and clinical variables, elucidating their roles in long-term health. These findings support using biomarkers for patient stratification and indicate potential targets for therapeutic interventions.

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Globally, industrial biotechnology addresses diverse challenges, fostering environmental conservation, sustainable development, economic growth, and innovation. Currently, there are approximately 20,922 biotech companies worldwide, including 6,653 in the US, reflecting significant growth. The global biotech market is valued at $727.1 billion and is projected to expand at a compound annual growth rate of 7.4% by 2025. In India, industrial biotechnology holds promise, with about 3% of the global market share. The country has the highest number of FDA-approved manufacturing facilities outside the US, totaling 665 plants. This growth is driven by government support and a skilled workforce, with a focus on advancements in bioenergy, bio-based materials, and healthcare. Recent years have witnessed a surge in international demand for Indian vaccines and biopharmaceuticals, positioning the country as a leading hub for contract manufacturing and clinical trials. The country's bioeconomy, valued at $150 billion by 2023, is forecasted to double to $300 billion by 2030. This growth is supported by the government's BIRAC scheme, which has established 60 successful bio-incubation centers, further promoting innovation and entrepreneurship. India's bioeconomy basically consists of four segments: BioIndustrial ($72.6 billion, 48.09%), BioAgri ($12.44 billion, 8.24%), BioPharma ($53.8 billion, 35.65%), and BioServices ($12.1 billion, 8.02%), with biotech start-ups reaching 8,531 in 2023. This comprehensive review highlights the significant potential of industrial biotechnology in India by focusing on technological advancements, policy impacts, and market trends. It provides an overview of the current landscape, challenges, and future opportunities, and offers insights to guide strategic initiatives aimed at advancing the sector.

Synthesis, molecular docking studies of formononetin derivatives as potent Bax agonists for anticancer activity

Formononetin as a Bax agonist exhibits anticancer effects. To identify novel Bax agonist, 18 new structurally modified formononetin derivatives were synthesised and their anticancer activities were evaluated in the A549 and Beas-2b cell lines. The results indicated that 7a elicited the most potent inhibitory effect against the A549 cell line, with an IC50 value of 0.87 μM, and no obvious toxicity to Beas-2b cells. These results indicated that 7a was 40-fold and 6.94-fold more efficacious than Formononetin and Doxorubicin, respectively. Additionally, western blot and immunofluorescence assays demonstrated that 7a downregulated the protein expression of Bcl-2 and upregulated the expressions of Bax to promote A549 apoptosis, the obtained results also suggested that 7a had the potential to be developed into a lead compound that can be applied in the prevention and treatment of lung cancer.

Inhibition potential of natural flavonoids against selected omicron (B.1.19) mutations in the spike receptor binding domain of SARS-CoV-2: a molecular modeling approach

The omicron (B.1.19) variant of contagious severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is considered a variant of concern (VOC) due to its increased transmissibility and highly infectious nature. The spike receptor-binding domain (RBD) is a hotspot of mutations and is regarded as a prominent target for screening drug candidates owing to its crucial role in viral entry and immune evasion. To date, no effective therapy or antivirals have been reported; therefore, there is an urgent need for rapid screening of antivirals. An extensive molecular modelling study has been performed with the primary goal to assess the inhibition potential of natural flavonoids as inhibitors against RBD from a manually curated library. Out of 40 natural flavonoids, five natural flavonoids, namely tomentin A (-8.7 kcal/mol), tomentin C (-8.6 kcal/mol), hyperoside (-8.4 kcal/mol), catechin gallate (-8.3 kcal/mol), and corylifol A (-8.2 kcal/mol), have been considered as the top-ranked compounds based on their binding affinity and molecular interaction profiling. The state-of-the-art molecular dynamics (MD) simulations of these top-ranked compounds in complex with RBD exhibited stable dynamics and structural compactness patterns on 200 nanoseconds. Additionally, complexes of these molecules demonstrated favorable free binding energies and affirmed the docking and simulation results. Moreover, the post-simulation validation of these interacted flavonoids using principal component analysis (PCA) revealed stable interaction patterns with RBD. The integrated results suggest that tomentin A, tomentin C, hyperoside, catechin gallate, and corylifol A might be effective against the emerging variants of SARS-CoV-2 and should be further evaluated using in-vitro and in-vivo experiments.Communicated by Ramaswamy H. Sarma.

Facilitating self-testing with a fast, accurate, and simplified shelf-stable colorimetric LAMP system for Mpox and SARS-CoV-2 detection

The rapid and accurate detection of viral infections is essential for effective disease management and prevention. Quantitative polymerase chain reaction (qPCR) remains the gold standard for viral detection due to its high sensitivity and specificity. However, its limitations-including the need for specialized equipment, trained personnel, and longer processing times-make it impractical for at-home or rapid testing. Although numerous point-of-care assays based on isothermal nucleic acid amplification have been developed, they often lack the simplicity and adaptability required for self-testing in non-laboratory settings such as at home. To address this, we developed and validated the SCOLAR (Shelf-stable Colorimetric LAMP system for Rapid self-testing of viruses) system, a simplified, portable, and accurate diagnostic tool designed for self-testing of Mpox and SARS-CoV-2 infections. The SCOLAR system employs novel lyophilized colorimetric loop-mediated isothermal amplification (LAMP) beads, a customized sample lysis buffer, and smartphone-assisted RGB color analysis for interpreting results. Validation was conducted using 24 mock Mpox skin swabs, 32 wastewater samples, and 104 clinical SARS-CoV-2 nasopharyngeal swabs, with comparisons to an in-house qPCR assay. The SCOLAR system demonstrated an analytical sensitivity of below 10 copies/μL for all targets within 15 min. Diagnostic performance for mock Mpox samples exhibited 93.8 % sensitivity and 100 % specificity, while wastewater samples achieved 100 % sensitivity and specificity. SARS-CoV-2 swabs had 96 % sensitivity and 100 % specificity. The system also proved effective for self-testing by untrained individuals. SCOLAR offers a reliable, easy-to-use platform for rapid self-testing, with potential for broader applications in public health strategies to enhance pandemic preparedness and response.

New metal complexes of 1H-benzimidazole-2-yl hydrazones: Cytostatic, proapoptotic and modulatory activity on kinase signaling pathways

The copper complexes of two 1H-benzimidazole-2-yl hydrazones were obtained by complexation with copper chloride. The molecular structure of the complexes was studied by microchemical analysis, SEM-EDX, IR and micro-Raman spectroscopy and DFT calculations. It was found that both ligands form 1:1 complexes with the copper, where the Cu ions are coordinated by N-atom from the benzimidazole ring, N-atom of the azomethine bond, O-atom from the ortho-OH group of the aromatic ring and one chlorine atom. The coordination process significantly affected their cytotoxicity profile. The conversion of 2-(2-hydroxybenzylidene)-1-(1H-benzimidazol-2-yl)hydrazine 1.1. into a Cu complex 2.1. led to a 2.4-fold increase in its antileukemic activity against AR-230 cells and an 8-fold increase in the cytostatic activity against MCF-7 breast cancer cell line. The growth-inhibitory effect of the Cu complex of 2-(2-hydroxy-4-methoxybenzylidene)-1-(1H-benzimidazol-2-yl)hydrazine 2.2. on the MCF-7 cells was comparable to that of the respective ligand, however lacked towards the leukemic AR-230 cell population. Regarding their cytotoxic potential towards CCL-1 cells, both Cu complexes exhibited a weaker selectivity pattern as compared to their ligands. The proapoptotic and modulatory activity of 1.1 and 2.1. on key kinase signaling pathways was further studied in the ER + breast cancer (MCF-7) and bcr-abl + leukemic (AR-230) in vitro tumor models in a comparative manner to the reference drugs tamoxifen and imatinib, respectively. Inhibition of the JAK/STAT signaling pathway was outlined as a prominent mechanism in the antileukemic activity against the Ph + AR-230 in vitro model, whereas recruitment and activation of the extrinsic apoptotic pathway was established in the MCF-7 cells.

Nitro Substituted Co(II), Ni(II) and Cu(II) Schiff Base Metal complexes: design, spectral analysis, antimicrobial and in-silico molecular docking investigation

The Schiff base metal complexes containing the transition metal ions Co(II), Ni(II) and Cu(II) were synthesized using their nitrate and acetate salts. An octahedral environment encircling metal complexes has been demonstrated by the findings of multiple spectroscopic approaches that were employed to demonstrate the structure of the metal complexes. The Coats-Redfern method of thermal analysis was employed to carry out the kinetic and thermodynamic calculations. The crystalline size of ligand was 36.67 nm and for the metal complexes it varies from 22.43 to 49.21 nm. To assess the biological effectiveness of these compounds, molecular docking studies were emanated. The docking binding studies were established through the interaction of metal complexes with human cancer protein, such as 3W2S (ovarian cancer) and 4ZVM (breast cancer). The results exemplified that the complexes are more efficient towards ovarian cancer (3W2S) in contrast to breast cancer (4ZVM) while among complexes, the nickel acetate (- 7.0 kcal/mol) and copper acetate (- 7.9 kcal/mol) complex were more efficient towards 4ZVM and 3W2S receptors respectively. Additionally, DNA binding studies against 1BNA receptor protein was examined from docking evaluations and the finding concludes the highest efficiency of nickel (- 8.1 kcal/mol) complexes. Further, a number of bacterial and fungal strains have been implemented in antimicrobial examinations to assess the compounds effectualness. The results untangled the extreme potential of copper nitrate (0.0051-0.0102 µmol/mL) and copper acetate (0.0051-0.0103 µmol/mL) complexes against all bacterial and fungal strains except for S. aureus in which nickel acetate proved out to be highly competent.

An online survey on the association between the use of alcohol-based hand sanitizer and dermatitis in the Jizan Population

Background

Frequent use of alcohol-based hand sanitizers during the COVID-19 pandemic can cause skin irritation and dermatitis due to the removal of natural skin oils. This survey aims to assess the association between alcohol-based hand sanitizer use and dermatitis prevalence among the residents of Jizan, Saudi Arabia.

Methods

This cross-sectional study was conducted using an online survey distributed between September and December 2021. The survey collected data on hand sanitizer usage patterns, dermatitis symptoms, and sociodemographic characteristics of 500 randomly selected Jizan residents aged ≥18 years. Associations between sanitizer use variables and dermatitis occurrence were analyzed using Chi-square and exact probability tests for instances with low frequencies.

Results

The majority were 347 (69.4%) females, with a mean age of 23.6 ± 11.8 years. A total of 402 (80.4%) used sanitizers, increasing to 395 (79%) during the pandemic. Dermatitis symptoms were reported in 138 patients (27.6%) after sanitizer use. Using sanitizers >6 times daily was associated with 71.4% a dermatitis prevalence of 47.4% versus <3 times daily (P = 0.003). The use of 80-95% alcohol gels was linked to 68.8% dermatitis versus other products (P = 0.001). The common symptoms included skin roughness (55.4%), itching (46.5%), and redness (37.6%). Onset was immediate (23.3%) and within hours or days (28.2%).

Conclusions

This study demonstrated a clear association between frequent or high-concentration sanitizer use and increased dermatitis prevalence among Jizan residents. Public awareness campaigns and product guidelines are needed to promote proper usage of techniques that balance hygiene and skin health. Future research should explore effective prevention strategies, such as moisturizer combinations or lower risk alternatives.