Evaluation of phytosynthesised silver nanoparticles from leaf extracts of Leucas aspera and Hyptis suaveolens and their larvicidal activity against malaria, dengue and filariasis vectors

Elumalai, D.; Hemavathi, Maduraiveeran; Deepaa, Chandrasekar Vijayalakshmi; Kaleena, P.K.

doi:10.1016/j.parepi.2017.09.001

Cited by 91 publications

(39 citation statements)

References 35 publications

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“…These diffraction patterns were compared and found closely associated to JCPDS No. 04-0783 [19]. The robust intensity of diffraction at 38° indicated silver crystal's preferential orientation along (111) plane.…”

Section: Structural Analysismentioning

confidence: 99%

Eco-friendly approach in synthesis of silver nanoparticles and evaluation of optical, surface morphological and antimicrobial properties

Selvaraj¹,

Sagadevan

Muthukrishnan

et al. 2019

J Nanostruct Chem

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Silver nanoparticles (Ag NPs) were synthesized using Alternanthera sessilis leaf and Oregano root extract in an eco-friendly fashion and their significant physicochemical and optochemical properties were ascertained for nano-defined characteristics. The UV-visible spectrum showed a single and distinct absorbance peak at 433 nm (Alternanthera sessilis) and 425 nm (Oregano), typical SPR (surface plasmon resonance) for silver. Structural studies revealed nano-crystal with face centre cubic (FCC) symmetry with monodispersed nature. SEM studies showed spherical-shaped particles and the purity determined from EDX spectrum. The synthesized Ag NPs showed that antibacterial activity was studied. There was a significant inhibitory effect toward clinically important pathogens viz. B. subtilis, S. aureus, P. aeruginosa, and E. coli exposed to Ag NPs at different concentrations.

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Section: Structural Analysismentioning

confidence: 99%

Eco-friendly approach in synthesis of silver nanoparticles and evaluation of optical, surface morphological and antimicrobial properties

Selvaraj¹,

Sagadevan

Muthukrishnan

et al. 2019

J Nanostruct Chem

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“…This approach is interesting because these agents can be more selective and may last for shorter periods in the environment ( Soberón et al, 2016 ). In this context, Elumalai et al (2017) described the synthesis of silver nanoparticles produced with the aqueous extracts from the leaves of Mesosphaerum suaveolens (syn. Hyptis suaveolens ) and its insecticidal activity.…”

Section: Biological Investigationsmentioning

confidence: 99%

Subtribe Hyptidinae (Lamiaceae): A promising source of bioactive metabolites

Bridi

Meirelles

Poser

2021

Journal of Ethnopharmacology

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Ethnopharmacological relevance The subtribe Hyptidinae contains approximately 400 accepted species distributed in 19 genera ( Hyptis , Eriope , Condea , Cantinoa , Mesosphaerum , Cyanocephalus , Hypenia , Hyptidendron , Oocephalus , Medusantha , Gymneia , Marsypianthes , Leptohyptis , Martianthus , Asterohyptis , Eplingiella , Physominthe , Eriopidion and Rhaphiodon ). This is the Lamiaceae clade with the largest number of species in Brazil and high rates of endemism. Some species have been used in different parts of the world mainly as insecticides/pest repellents, wound healing and pain-relief agents, as well as for the treatment of respiratory and gastrointestinal disorders. Aim of the review This review aims to discuss the current status concerning the taxonomy, ethnobotanical uses, phytochemistry and biological properties of species which compose the subtribe Hyptidinae. Materials and methods The available information was collected from scientific databases (ScienceDirect, Pubmed, Web of Science, Scopus, Google Scholar, ChemSpider, SciFinder ACS Publications, Wiley Online Library), as well as other literature sources (e.g. books, theses). Results The phytochemical investigations of plants of this subtribe have led to the identification of almost 300 chemical constituents of different classes such as diterpenes, triterpenes, lignans, α -pyrones, flavonoids, phenolic acids and monoterpenes and sesquiterpenes, as components of essential oils. Extracts, essential oils and isolated compounds showed a series of biological activities such as insecticide/repellent, antimicrobial and antinociceptive, justifying some of the popular uses of the plants. In addition, a very relevant fact is that several species produce podophyllotoxin and related lignans. Conclusion Several species of Hyptidinae are used in folk medicine for treating many diseases but only a small fraction of the species has been explored and most of the traditional uses have not been validated by current investigations. In addition, the species of the subtribe appear to be very promising as alternative sources of podophyllotoxin-like lignans which are the lead compounds for the semi-synthesis of teniposide and etoposide, important antineoplastic agents. Thus, there is a wide-open door for future studies, both to support the popular uses of the plants and to find new biologically active compoun...

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“…Studies have investigated the larvicidal activity of copper [78,88], selenium [89], gold [90][91][92], and silver [93][94][95][96][97][98][99][100][101][102] NPs, and demonstrated their potential for inactivating the significant mosquito vectors (genus Aedes) of dengue [103,104]. Paul et al [105] analyzed the antiviral activity of gold NPs conjugated with small interfering RNA against the dengue virus.…”

Section: Dengue Virusmentioning

confidence: 99%

Metal Nanoparticles: a Promising Treatment for Viral and Arboviral Infections

Maduray

Parboosing

2020

Biol Trace Elem Res

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Globally, viral diseases continue to pose a significant threat to public health. Recent outbreaks, such as influenza, coronavirus, Ebola, and dengue, have emphasized the urgent need for new antiviral therapeutics. Considerable efforts have focused on developing metal nanoparticles for the treatment of several pathogenic viruses. As a result of these efforts, metal nanoparticles are demonstrating promising antiviral activity against pathogenic surrogates and clinical isolates. This review summarizes the application of metal nanoparticles for the treatment of viral infections. It provides information on synthesis methods, size-related properties, nano-bio-interaction, and immunological effects of metal nanoparticles. This article also addresses critical criteria and considerations for developing clinically translatable nanosized metal particles to treat viral diseases.

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Evaluation of phytosynthesised silver nanoparticles from leaf extracts of Leucas aspera and Hyptis suaveolens and their larvicidal activity against malaria, dengue and filariasis vectors

Cited by 91 publications

References 35 publications

Eco-friendly approach in synthesis of silver nanoparticles and evaluation of optical, surface morphological and antimicrobial properties

Eco-friendly approach in synthesis of silver nanoparticles and evaluation of optical, surface morphological and antimicrobial properties

Subtribe Hyptidinae (Lamiaceae): A promising source of bioactive metabolites

Metal Nanoparticles: a Promising Treatment for Viral and Arboviral Infections

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