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Wyświetlanie 1-2 z 2
Tytuł:
Neuroprotective effects of onion and garlic root extracts against Alzheimer’s disease in rats: antimicrobial, histopathological, and molecular studies
Autorzy:
Hegazy, Eman M.
Sabry, Ayman
Khalil, Wagdy K.B.
Powiązania:
https://bibliotekanauki.pl/articles/16648099.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
onion
garlic
Alzheimer
mycotoxins
antimicrobial
histology
comet
gene expression
Opis:
Alzheimer’s disease (AD) is a brain disorder and the main reason for dementia. In this regard, there is a need to understand the alterations that occur during aging to develop treatment strategies to mitigate or prevent neurodegenerative consequences. Onion and garlic root extracts contain natural polyphenols with high antioxidant capacity; therefore, the present study aimed to investigate the protective effect of these extracts free from mycotoxin contamination on a rat model of AD. Antifungal and antibacterial assays were performed for onion and garlic extracts. Several groups of AD-induced rats were administered 1, 2, and 3 mg/kg onion or garlic extract through intragastric intubation for 30 days. After treatment, histopathological analysis, expression of apoptosis-related genes, and analyses of DNA damage and reactive oxygen species (ROS) generation were conducted in the brain tissues. The results indicate that treatment of AD-induced rats with several doses of onion and garlic root extracts decreased histopathological lesions, the expression levels of apoptotic genes, and the rate of DNA damage and inhibited intracellular ROS generation in the brain tissues. The results suggest that the protective role of onion root extract could be attributed to its content of flavonoids and flavonoid compounds through the improvement of antioxidant capacity and regulation of gene expression patterns. The higher activity levels of free radical scavenging of azino-bis (3-ethylbenzothiazoline-6-sulphonic acid (ABTS) and antioxidant ferric reducing antioxidant power (FRAP) levels found in garlic root extract are most probably responsible for its protective effect against neurodegenerative damage.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2022, 103, 2; 153-167
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved transformation of Agrobacterium assisted by silver nanoparticle
Autorzy:
Benny, Amala
Alex, Swapny
Soni, K.B.
Anith, K.N.
Kiran, A.G.
Viji, M.M.
Powiązania:
https://bibliotekanauki.pl/articles/16648111.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
silver nanoparticles
Agrobacterium transformation
calcium chloride
competent cells
freeze thaw
transformation efficiency
Opis:
In transgenic plant development, the low transformation efficiency of Agrobacterium with exogenous DNA is the major constraint, and hence, methods to improve its transformation efficiency are needed. Recently, nanoparticlemediated gene transfer has evolved as a key transformational tool in genetic transformation. Since silver nanoparticles (AgNPs) can induce pores on the cell membrane, their efficacy in the improvement of conventional calcium chloride freeze-thaw technique of transformation of Agrobacterium was explored in this study. Agrobacterium cells in the exponential growth phase were exposed to different concentrations of AgNPs (0.01, 1, 5, 10, and 20 mg/l), and the half-maximal effective concentration (EC50) was determined via Probit analysis using the SPSS software. Transformation efficiency of AgNPs alone and in combination with calcium chloride was compared with that of the conventional calcium chloride freeze-thaw technique. AgNPs at a concentration of 0.01 mg/l in combination with calcium chloride (20 mM) showed a ten fold increase in the transformation efficiency (3.33 log CFU (colony-forming unit/microgram of DNA) of Agrobacterium tumefaciens strain EHA 105 with plasmid vector pART27 compared with the conventional technique (2.31 log CFU/μg of DNA). This study indicates that AgNPs of size 100 nm can eliminate the freeze-thaw stage in the conventional Agrobacterium transformation technique, with a 44% improvement in efficiency. The use of AgNPs (0.01 mg/l) along with 20 mM calcium chloride was found to be an economically viable method to improve the transformation of Agrobacterium with exogenous plasmid DNA.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2022, 103, 3; 311-317
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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