Background/Objectives: Hydrogels infused with silver nanoparticles (AgNPs) are widely used for their antibacterial properties, yet their stability, specifically upon contact with solid growth media (agar), remains poorly explored. This study compared two hydrogel matrices, anionic Carbopol 934 and non-ionic Pluronic F127, incorporating AgNPs of three different sizes. The evaluation focused on colloidal stability and antibacterial efficacy against Gram-positive and Gram-negative bacteria. Methods: In this study AgNPs (~20, ~55, and ~65 nm) were synthesised via a wet-chemical method and characterised by UV–visible spectroscopy, dynamic light scattering (DLS), and transmission electron microscopy (TEM). AgNPs were incorporated into Carbopol 934 and Pluronic F127 hydrogel matrices. Colloidal stability was monitored over four months of storage and upon contact with tryptic soy agar (TSA). Antibacterial activity was assessed using agar diffusion assays. Results: Showed that both hydrogel systems maintained AgNP stability during storage, comparable to aqueous suspensions. However, upon contact with TSA, aggregation of Carbopol–AgNP hydrogels occurred, whereas Pluronic–AgNP hydrogels remained stable. In antibacterial assays, both hydrogels produced larger zones of inhibition (ZOI) than AgNP suspensions against Gram-negative bacteria (E. coli, P. aeruginosa), with Carbopol–AgNP hydrogels demonstrating superior efficacy in an inverse size-dependent manner. Against Gram-positive bacteria (S. aureus, S. epidermidis), Pluronic–AgNP hydrogels initially showed larger ZOIs due to the polymer’s intrinsic antibacterial activity. However, after correcting for this baseline, Carbopol–AgNP hydrogels exhibited superior net efficacy, with S. epidermidis showing greater susceptibility than S. aureus. Conclusions: While both Carbopol 934 and Pluronic F127 stabilise AgNPs during storage, the matrix type significantly influences behaviour at the biological interface. Carbopol–AgNP hydrogels aggregate upon contact with solid agar yet deliver superior, size-dependent antibacterial activity compared to the stable but less potent Pluronic systems.

Background: Globally, community pharmacists worldwide have prescribed more over-the-counter systemic antibiotics, posing significant issues for international organizations tackling antibiotic-resistant bacteria, a major global threat, due to the accessibility in pharmacies. Objectives: This study aimed to examine the Jordanian pharmacists’ antibiotic selection and over-the-counter antibiotic prescriptions. Methods: A total of 244 community pharmacists participated in an online standardized survey, which examined five essential domains including sources and trust of pharmacy antibiotic prescription information, category and frequency of permitted antimicrobials, prescription-free antimicrobials, interactions, antimicrobial prescription issues for pharmacists, and pharmacy staff’s knowledge of non-prescription antimicrobial questions and answers. Results: This study found that 1—pharmacists are confident in prescribing antibiotics and they use various tools to improve their skills. 2—Antibiotics were the most sought antimicrobials without a prescription, followed by antifungals and antivirals. 3—Throat, urinary tract, chest, and otitis media are the most common infections that require antibiotics. Pharmacists prescribe penicillin for 75% of throat infections, Fluoroquinolones for 48.2% of urinary tract infections, and cephalosporins for 35.9%. Macrolides are the most prevalent otitis media treatment (43.2%). 4—Some people obtain antimicrobial prescriptions without a valid reason or diagnosis. 5—Many pharmacists (171/244, 70%) agree or strongly believe that antibiotic prescription information is difficult to obtain. 6—Many pharmacists (183/200, 91.5%) aimed to educate patients on the risks and correct use of antimicrobials without prescriptions. Conclusions: These results show that Jordanian community pharmacists follow clinical antibiotic prescribing guidelines and conduct antimicrobial stewardship, yet they demand antimicrobials without prescriptions and lack decision support tools. Antibiotic classes address most diseases, and pharmacists emphasize antimicrobial misuse.

Tuberculosis, caused by Mycobacterium tuberculosis (M. tb), remains a leading global threat, escalated now by the rise of multidrug-resistant (MDR-TB) and extensively drug-resistant (XDR-TB) strains. In search of a novel anti-tubercular agent with a distinct mechanism of action, this study explores deep-sea marine metabolites as potential inhibitors of the F₄₂₀-dependent oxidoreductase Rv1155, a redox enzyme essential for M. tb survival. A total of 2773 marine-derived compounds curated from the CMNPD, Reaxys, and MarinLit databases were screened using an integrated CADD workflow combining molecular docking, in-silico ADMET profiling, and molecular dynamics (MD) simulations. Docking identified 68 metabolites with strong affinity (−10.98 to −15.95 kcal/mol) for the Rv1155 binding pocket, and from which three compounds, Upenamide (CMNPD_22964), Aspyronol (Compound_1749), and Fiscpropionate F (Compound_1796), were shortlisted as hit candidates. Among these, Upenamide displayed the strongest binding (ΔG = −28.56 kcal/mol) with stable RMSD and hydrogen bond persistence during 100 ns MD simulation, while Aspyronol demonstrated a promising ADMET profile comparable to the native cofactor F₄₂₀₂. MM-GBSA analysis further confirmed the strong binding strength (ΔG _bind = −24.77 to −34.07 kcal/mol) for all three hit candidates. These findings confirm the strong and stable interaction of selected deep-sea marine metabolites with Rv1155. This validated screening pipeline established here provides a cost-effective framework for future experimental validation and expansion to additional F₄₂₀-related drug targets in M. tb.

Background: Antimicrobial resistance (AMR) is one of the most significant current public health issues, which is driven crucially by the misuse and overuse of antibiotics. Antibiotics are still available without a prescription in many underdeveloped countries, including Jordan, allowing for self-medication and incorrect usage, which contributes to the establishment and spread of resistant bacteria. This cross-sectional study aimed to evaluate antibiotic-use practices and assess knowledge and awareness of antimicrobial resistance among the Jordanian population. Methods: We conducted a cross-sectional observational survey between September 2023 and January 2025, targeting males and females in Jordan. A QR code was used to distribute an online convenience sampling strategy with 57 questions across social media channels. The survey investigated a variety of aspects, including demographic traits, antibiotic knowledge and behaviour, and public awareness of resistance. The questionnaire was completed by 1031 people. The data was analysed using descriptive statistics. The chi-square test was performed to compare demographic groupings, and p < 0.05 was considered significant. Results: Among the 1031 participants, 61.3% were female and 37.8% were male. Recent utilization of antibiotics was prevalent, with 37.8% indicating usage in the preceding month and 26.4% within the last six months. It is noteworthy that 61% (n = 624) of participants indicated that they had consumed antibiotics without a prescription, while 33.6% (n = 345) reported acquiring antibiotics for children without a prescription. Furthermore, pharmacies constituted the predominant source of antibiotics, accounting for 90.4% of the total. Common misconceptions regarding the indications for antibiotics were observed, with a segment of participants under the impression that antibiotics are effective in treating symptoms such as fever (40.6%) and body pain (15%). Additionally, participants exhibited a moderate level of awareness regarding antimicrobial resistance, with 69.2% demonstrating familiarity with the concept, while 90% acknowledged the increased difficulty in treating infections caused by antimicrobial-resistant organisms. Nevertheless, major misconceptions persisted, including 84.8% incorrectly believing that antibiotic resistance occurs when the human body becomes resistant to antibiotics and then antibiotics cannot work properly. More than half of the respondents (n = 569; 57.1%) also believed that AMR only or mainly affects individuals who frequently take antibiotics and does not concern others. Conclusions: This study has identified that non-prescription antibiotic use remains prevalent in Jordan and is accompanied by substantial misconceptions regarding antimicrobial resistance. Although general awareness of the seriousness of AMR was relatively high, important knowledge gaps persisted. In the adjusted analysis, among the covariates, participants aged 51–60 years had higher odds of reporting non-prescription antibiotic use than those aged 18–30 years (aOR = 1.872, 95% CI 1.072–3.268; p = 0.028). Moreover, participants with a high-school education (aOR = 0.415, 95% CI 0.196–0.879; p = 0.022) and those with a master’s degree (aOR = 0.411, 95% CI 0.181–0.933; p = 0.034) had lower odds than the no-formal-education reference group. No other covariate was statistically significant. The findings clearly indicate the need for strengthened enforcement of prescription-only antibiotic dispensing regulations, targeted public education to address specific misconceptions, and expanded antimicrobial stewardship initiatives involving community pharmacists to promote responsible antibiotic use and lessen the growing threat of antimicrobial resistance.

Tuberculosis, caused by Mycobacterium tuberculosis (M. tb), remains a leading global threat, escalated now by the rise of multidrug-resistant (MDR-TB) and extensively drug-resistant (XDR-TB) strains. In search of a novel anti-tubercular agent with a distinct mechanism of action, this study explores deep-sea marine metabolites as potential inhibitors of the F₄₂₀-dependent oxidoreductase Rv1155, a redox enzyme essential for M. tb survival. A total of 2,773 marine-derived compounds curated from the CMNPD, Reaxys, and MarinLit databases were screened using an integrated CADD workflow combining molecular docking, in-silico ADMET profiling, and molecular dynamics (MD) simulations. Docking results revealed several metabolites with high affinity for the Rv1155 binding pocket, and three compounds: Upenamide (CMNPD_22964), Aspyronol (Compound_1749), and Fiscpropionate F (Compound_1796) as hit candidates. Among these, Upenamide displayed the strongest binding and stable protein-ligand dynamics, while Aspyronol demonstrated a promising ADMET profile comparable to that of the native cofactor F₄₂₀₂. These findings highlight the potential of deep-sea marine metabolites as a valuable source of anti-tubercular scaffolds and establish a computationally driven, cost-effective framework for discovering inhibitors targeting F₄₂₀-dependent enzymes. This approach provides a foundation for future experimental validation and expansion to additional F₄₂₀-related drug targets in M. tb.