Polyherbal drug loaded starch nanoparticles as promising drug delivery system: Antimicrobial, antibiofilm and neuroprotective studies

Publication date: Available online 23 January 2020Source: Process BiochemistryAuthor(s): Prakashkumar Nallasamy, Thenmozhi Ramalingam, Nooruddin Thajuddin, Rajasree Shanmuganathan, Arivalagan Pugazhendhi, Suganthy NatarajanAbstractStarch is a natural, renewable biopolymer widely used in pharmaceutical industry for the controlled release of drugs and hormones. Triphala Churna (TC) a tridoshic rasayana, rich in polyphenols and vitamin C possess balancing and rejuvenating effect on three constitutional elements that govern the human life. To enhance the solubility and efficiency of the ayurvedic drug TC, attempts were made to encapsulate the TC into starch biopolymers. Characterization of Starch Encapsulated Triphala Churna (SETC) by UV–Vis spectrum, showed a sharp absorption peak at 686 nm specific for polyherbal formulation. XRD analysis illustrated that SETC is amorphous in nature. Zeta potential and dynamic light scattering analysis illustrated that the SETC were highly stable at −12 mV with an average size of 282.9 nm. SETC exhibited high drug encapsulation efficiency and fast drug release at physiological pH 7.4. Evaluation of neuroprotective effect illustrated that SETC showed excellent free radical scavenging activity, reducing power and acetylcholinesterase inhibitory activity. SETC also showed potent antibacterial activity against Salmonella typhi and Shigella dysenteriae and antibiofilm activity against ATCC MRSA 33591 and clinical str...
Source: Process Biochemistry - Category: Biochemistry Source Type: research

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Conclusion: Our results advance the current mechanistic understanding of the pseurotin-induced inhibition of IgE production in B-cells by linking the effect to STAT signaling, and associated modulation of B-cell proliferation and differentiation. Together with our finding that structurally simpler pseurotin analogs were able to reproduce the effects of natural pseurotins, the presented work has implications for the future research on these secondary metabolites in the context of allergic diseases.Graphical abstact
Source: Phytomedicine - Category: Drugs & Pharmacology Source Type: research
Publication date: Available online 22 February 2020Source: Materials LettersAuthor(s): Li Chen, Hong Pan, Caifeng Zhuang, Mengyao Peng, Li ZhangAbstractTreatment against bacterial infection is of great significance for joint wound healing in medical nursing care. Thus, it is urgent to develop efficient antibacterial agent with excellent wound healing capability. In this research, a two-step strategy was employed for the development of novel chitosan scaffold reinforced by strontium doped TiO2 nanoparticles (CS/Sr-TiO2). The antibacterial activity of CS/Sr-TiO2 against Escherichia coli, and Staphylococcus aureus were evalua...
Source: Materials Letters - Category: Materials Science Source Type: research
Publication date: 1 March 2020Source: Materials Chemistry and Physics, Volume 243Author(s): Samir Bouchareb, Rachida Doufnoune, Farid Riahi, Hafsa Cherif-Silini, Lassaad BelbahriAbstractGO-Ag nanohybrids have attracted tremendous attention thanks to their several potential properties. In this research work, a new approach was adopted, where Triphenylphosphine (PPh3) was used as a linkage to decorate the surface of Graphene oxide (GO) nanosheets by Silver nanoparticles (AgNPs) via a simple method. The Fourier transform infrared spectroscopy (FTIR), Ultraviolet–visible spectroscopy (UV–Vis), X-ray diffraction ana...
Source: Materials Chemistry and Physics - Category: Materials Science Source Type: research
Cosmeri Rizzato1, Javier Torres2, Elena Kasamatsu3, Margarita Camorlinga-Ponce2, Maria Mercedes Bravo4, Federico Canzian5 and Ikuko Kato6* 1Department of Translation Research and of New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy 2Unidad de Investigación en Enfermedades Infecciosas, Unidades Médicas de Alta Especialidad Pediatría, Instituto Mexicano del Seguro Social, Mexico City, Mexico 3Instituto de Investigaciones en Ciencias de la Salud, National University of Asunción, Asunción, Paraguay 4Grupo de Investigación en Biología del C&aacut...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Conclusion This study confirms the in vitro antibacterial activity of BIOCITRO® against Gram-negative and Gram-positive bacteria. For most of the strains, the product reached the bactericidal effect at the same concentration of the bacteriostatic effect and maximum difference between MIC and MBC was two dilution steps. The less susceptible species of the study were S. enterica ssp. enterica and E. coli with MBC90 values of 256 and 128 μg/mL, respectively, while the most susceptible was C. perfringens with MBC90 of 16 μg/mL. After short exposition time to the product, the significant effect over the viability of ...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
François Chassagne1†, Xinyi Huang1†, James T. Lyles1 and Cassandra L. Quave1,2* 1Center for the Study of Human Health, Emory University, Atlanta, GA, United States 2Department of Dermatology, Emory University, Atlanta, GA, United States In the search for new therapeutic solutions to address an increasing number of multidrug-resistant bacterial pathogens, secondary metabolites from plants have proven to be a rich source of antimicrobial compounds. Ginkgo biloba, a tree native to China, has been spread around the world as an ornamental tree. Its seeds have been used as snacks and medical mater...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Publication date: 15 September 2017 Source:LWT - Food Science and Technology, Volume 83 Author(s): Surya Kant Verma, Shiv Kumar Sood, Ram Krishan Saini, Neha Saini The present study was carried out to enhance shelf life of raw buffalo milk by the use of pediocin PA-1 containing fermented cheese whey (PCFCW) as bio-preservative. Ten distinct genera of milk microbes could be identified as Streptococcus, Enterococcus, Salmonella, Campylobacter, Lactobacillus, Enterobacter, E. coli, Shigella, Candida and Aspergillus. For the production of PCFCW, supplemented cheese whey medium was fermented with Pediococcus pentosaceous NCDC ...
Source: LWT Food Science and Technology - Category: Food Science Source Type: research
The World Health Organization is issuing a warning about a group of deadly bacteria: Recently, the WHO released its first-ever list of “priority pathogens,” a list of antibiotic-resistant bacteria that the organization says pose the greatest threat to human health. The list is divided into three categories: critical-, high- and medium-priority. Three pathogens made it into the critical-priority group. These bacteria are resistant to multiple antibiotics and pose a high risk to people in hospitals and nursing homes, the WHO says. Multidrug-resistant bacteria, sometimes called “superbugs,” are a ...
Source: Science - The Huffington Post - Category: Science Source Type: news
Publication date: 1 May 2017 Source:Inorganica Chimica Acta, Volume 461 Author(s): Tarlok S. Lobana, Shikha Indoria, Henna Sood, Daljit S. Arora, Balwinder S. Randhawa, Isabel Garcia-Santos, Victoria A. Smolinski, Jerry P. Jasinski Equimolar reactions of copper(II) acetate with 5-nitro-salicylaldehyde-N1-substituted thiosemi carbazones, [5-NO2-2-HO–C6H4-C2(H)N3–N2H–C1(S)–N1HR; R=Me, H2L-NHMe; Et, H2L-NHEt; Ph, H2L-NHPh; H, H2L-NH2], and 4,4′-dimethyl-2,2′-bipyridine (dm-bipy), 2,9-dimethyl-1,10-phenanthroline (dm-phen) and 3,4,7,8-tetramethyl-1,10-phenanthroline (tm-phen) have yielded c...
Source: Inorganica Chimica Acta - Category: Chemistry Source Type: research
ConclusionPKS gene expression indicated β keto‐acyl synthase as one of the important active domains in the biomolecules related to antitumour and antifungal group. The simultaneous identification of the biomolecule (dihydro‐2H‐pyran‐2‐one derivative) was also inferred spectroscopically. Significance and impact of the studyFreshwater cyanobacteria are the prolific producers of secondary metabolite(s) that may act as the antimicrobial drug resource in addition to their much explored marine counterpart.This article is protected by copyright. All rights reserved.
Source: Journal of Applied Microbiology - Category: Microbiology Authors: Tags: Original Article Source Type: research
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