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Mosquitoes are rapidly advancing as vectors of several severe diseases. The increasing resistance of mosquitoes and the environmental harm caused by insecticides pose significant challenges for eradicating mosquito vectors. In this study, 18 plant extracts were tested for larvicidal properties against Aedes aegypti, Culex quinquefasciatus, and Anopheles stephensi larvae. Phyllanthus niruri (Pn) showed enhanced larvicidal activity in both laboratory and field trials. The biosynthesis of silver nanoparticles (AgNPs) using Pn leaf methanol extract (Pn-LME) was confirmed by UV-visible spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and Fourier-transform infrared spectroscopy. Among various concentrations, 3 mM AgNPs exhibited significant LC90 values of 0.83, 1.46, and 9.11 ppm compared to 9.25, 93.48, and 14.60 ppm of Pn-LME against A. stephensi, C. quinquefasciatus, and A. aegypti, respectively. This indicates the high mortality of mosquito vectors at low AgNP concentrations. Additionally, Pn-AgNPs showed enhanced antibacterial activity and no cytotoxicity in normal fibroblast cells (L929). Field trials demonstrated a 98.70% decrease in mosquito larval density at A. stephensi breeding sites, a 96.55% reduction at C. quinquefasciatus sites, and a 97.85% reduction at Ae. aegypti sites. This study presents an eco-friendly and cost-effective AgNP bio-pesticide synthesized from Pn leaves for controlling and preventing the transmission of filarial, dengue, and malaria vectors.

The synthesized Ag-SeO2-doped (Fu) nanocomposites are novel therapeutic approaches against multidrug-resistant bacteria. The present study explores the synthesis, characterization, and evaluation of the antibacterial, antioxidant, and in vivo cytotoxic activities of novel nanocomposites. The distinguishing characteristics of Ag-Se/Fu nanocomposites were revealed through the use of UV-visible spectroscopy, EDX, and FTIR analysis. The result of the SEM micrograph shows that Ag-Se NPs and Fu nanocomposites, with average nanoparticle diameters that vary from 97.28 ± 7.14 nm, display spherical shapes. It was found that the potency of antioxidant and antimicrobial agents against Enterococcus faecalis, Klebsiella pneumonia, Escherichia coli, and Methicillin-resistant Staphylococcus aureus (MRSA). Moreover, the cytotoxicity assay indicates the nanocomposite has shown a survival rate of 98% in zebrafish embryos at 150 mg/mL. Compared to the control group, the embryos from the nanocomposite group had normal morphology, which is evidence of its safety and effectiveness. The results of this research reveal a promising strategy for multidrug-resistant bacteria with less cytotoxicity. [ABSTRACT FROM AUTHOR]

In this study, selenium nanoparticles will be produced with Clitoria ternatea and Zingiber officinale, and their efficacy as a natural anti-cariogenic agent will be assessed. To do this, a variety of analysis and evaluation techniques have been used, such as UV-Vis spectroscopy to characterize the synthesized selenium nanoparticles that has absorption band at 440 nm. XRD of the Se nanoparticle were analysed and were found to be crystalline in nature with particles size of 36 nm. SEM images confirmed that Se nanoparticles were flaky structured. The antibacterial activity test to assess the selenium nanoparticles activity against dental caries causing bacteria and the zone of inhibition of the nanoparticles were found. Cytoplasmic leakage assay was done to govern the range of damage instigated by the synthesized selenium nanoparticles to bacterial cell membranes and time kill curve assay represents the time taken by the synthesized selenium nanoparticles to kill the cariogenic bacteria. [ABSTRACT FROM AUTHOR]

The present study was carried out to synthesize silver nanoparticles (AgNPs) from an aqueous leaf extract of Cynoglossum furcatum, which functioned as a capping agent and reducing agent. The synthesized AgNPs have been revealed using a variety of microscopy techniques. The spherical dimension is exploited by electron microscopies, which have an average nanoparticle size of 33 nm. A topographical photograph of Cynoglossum furcatum AgNPs was obtained using atomic force microscopy, demonstrating the reduction of surface irregularity. The MTT assay was employed to evaluate the effect of the plant extract and the AgNPs on the Vero, 3T3 L1, and A431 cell lines. The agar disk diffusion was employed to evaluate the antibacterial efficacy with E.coli, S.typhi, S.aureus, and E.faecalis, as well as the antifungal efficacy against A.niger, C.albicans, A.flavus, and A.fumigates, which exhibited substantial antimicrobial activity. [ABSTRACT FROM AUTHOR]

The use of environmental materials such as plant extract for the synthesis of silver nanoparticles (AgNPs) offers numerous benefits of eco-friendliness and compatibility for pharmaceutical and other biomedical Applications. In this study, we used Momordica charantia leaf extract as a reducing agent for the synthesis of AgNPs. Characterization of the AgNPs was done by UV-Visible Spectroscopy, FTIR, SEM, TEM and EDX. Furthermore, we established the in vitro anticancer efficacy of these nanoparticles against the human breast cancer cell line MCF-7 using MTT assay, nuclear morphology testing, and staining. In addition to the above, the anti-bacterial effect was also tested against a range of bacterial isolates using well-diffusion method. These AgNPs also demonstrated impressive results when tested for their free-radical scavenging efficiency on the MCF-7 breast cancer cell line, indicating future potential for their use in medicine. These findings indicated the possible applicability of biosynthesized AgNPs derived from Momordica charantia L. [ABSTRACT FROM AUTHOR]

The usage of copper nanoparticles (CuNPs) is now acknowledged as a promising therapeutic agent in the detection and treatment of cancer. This study aimed to develop a sustainable method for synthesizing CuNPs using Pedalium murex L. and characterization by SEM, FTIR, XRD & UV-Vis methods. The produced CuNPs were primarily spherical and varied in shape, and the average dimension ranged between 20 and 50 nm. The aqueous fruit juice of Pedalium murex L. contained biomolecules that serve as capping and reducing agents for the production of CuNPs, according to the findings of FTIR analysis. Various assays were used to determine the fruit extract's in vitro antioxidant activity. CuNPs exhibited dose-dependent cytotoxicity and apoptosis promotion in A549 cells. The findings demonstrated that biosynthesized CuNPs using Pedalium murex L. fruit juice have anti-cancer properties and can be used in lung cancer treatment, particularly for early-stage intervention. [ABSTRACT FROM AUTHOR]

Zingiberaceae species are widely in traditional medicine throughout the world. This study evaluates the potential biological applications of phyto-functionalised silver nanoparticles (AgNPs) synthesised using sprouted Zingiberaceae species. The AgNPs were characterised and found to be spherical in the size of 25 nm-30 nm. The experimental results indicated that AgNPs have notable bactericidal activity against gram-positive and gram-negative bacteria. Human colon cancer cells (HCT15) were used to perform the anticancer assay and cell viability at a concentration of 500 µg/mL ranged from 43.71% to 49.49%. Also sprouted C. amada AgNPs at a concentration of 200 μg/mL provided maximum inhibition of 65.40% and 68.78% for α-amylase and α-glucosidase activity respectively. Furthermore, the sprouted Z. officinale AgNPs at a concentration of 500 µg/mL displayed significant glucose uptake percentage (99.56%) under in vitro conditions. The results indicated that phyto-functionalised AgNPs from sprouted Z. officinale and C. amada possess antibacterial, anticancer and antidiabetic activity. [ABSTRACT FROM AUTHOR]

The current study's initial goal was to investigate the anticancer activity of the extracts from the flowering plant Nyctanthes arbor-tristis. The ethanol extracts' phytochemical analysis was qualitatively determined. It was determined that the various phytochemical substances had antibacterial, antioxidant, and anticancer effects. GC-MS analysis revealed compounds like maleic anhydride, butanedioic acid, and oxalic acid emphasize the antioxidant and anticancer properties. MTT assay was investigated against three different cell lines (HepG2, A549, and MCF7). High level of resistance to HepG2 liver cancer cell lines was noted with ethanol flower extracts with IC 50 value of 67.98 μg/mL. EtBr staining assay revealed HepG2 apoptotic cells displaying nuclear and membrane alterations when exposed to 70 μg/mL of ethanol extract. The cells treated with 70 μg/mL of extract showed a reduction of mitochondrial membrane potential, as evidenced by the MMP assay, which showed red fluorescence decreasing and green fluorescence increasing. DNA fragmentation analysis showed HepG2 cancer cells showed no signs of DNA fragmentation after being treated with 50 μM treatments of flower extracts for 72 h. Quantitative RT-PCR analysis showed increased Bcl2 gene expression with fold variation level of about 0.086094579. The obtained results emphasized the significance of Nyctanthes arbor-tristis extracts with a suggestion of chemotherapeutic medication to treat various cancers in the future., (© 2024 John Wiley & Sons Ltd.)