Razvan Stefan Boiangiu

Razvan Stefan Boiangiu
Universitatea Alexandru Ioan Cuza | UAIC · Department of Biology

PhD

About

23
Publications
4,400
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210
Citations

Publications

Publications (23)
Article
Full-text available
Y. schidigera contains a number of unusual polyphenols, derivatives of resveratrol and naringenin, called spiro-flavostilbenoids, which have potent in vitro anti-inflammatory, antioxidant, and moderate cholinesterase inhibitory activities. To date, these compounds have not been tested in vivo for the treatment of neurodegenerative diseases. The aim...
Article
Full-text available
Paenarthrobacter nicotinovorans is a soil bacterium that uses the pyridine pathway to degrade nicotine. The genome of strain ATCC 49919 is composed of a ~4.3-Mbp chromosome and a ~165-kbp plasmid. The second strain, termed here nic- , is a cured derivative lacking the plasmid and not able to degrade nicotine.
Article
Full-text available
Guiera senegalensis JF Gmel. (Combretaceae) (GS) is a plant used in traditional medicine in West Africa for the treatment of several diseases, such as epilepsy and depression. However, its potential benefits in improving scopolamine (Sco)-induced memory impairment and brain oxidative stress in zebrafish have been investigated. In the present study,...
Article
Full-text available
Angelica purpurascens (Avé-Lall.) Gilli. is a medicinal plant that displays antioxidant, anticholinesterase, and neuroprotective properties. The effect of A. purpurascens essential oil (APO) on memory impairments and brain oxidative stress in zebrafish (Danio rerio) treated with scopolamine (Sco), as well as the underlying mechanism involved, were...
Conference Paper
Alzheimer's disease (AD) is a multifactorial progressive and irreversible neurodegenerative disorder, with an average duration of approximately 8.5 years between the onset of clinical symptoms and death. AD is the most common form of dementia affecting about 10% of people over the age of 65. The disease is characterized by massive loss of neurons a...
Article
Full-text available
This scientific research focused on the production of hydroethanolic extract of the plant species Lycopodium selago L. (L. selago) by the ultrasound-assisted extraction (USAE) and the identification of biocompounds with high antioxidant activity is of interest for possible phytotherapeutic treatment against Alzheimer’s disease (AD). The extract was...
Article
Full-text available
Hericium erinaceus (H. erinaceus) is a rare and appreciated fungal species belonging to the division Basidiomycota used for centuries in traditional Chinese medicine for its medicinal value. This species of mushrooms brings the most diverse benefits for the human body, and can have beneficial effects for treating Alzheimer's disease (AD). This stud...
Article
Full-text available
Paenarthrobacter nicotinovorans is a soil Gram-positive nicotine-degrading microorganism (NDM) that harbors a 165 kb pAO1 catabolic megaplasmid. The nicotine catabolic genes on pAO1 have been sequenced, but not all the details on the regulation and interplay of this pathway with the general metabolism of the cell are available. To address this issu...
Article
Full-text available
Bay leaf (Laurus nobilis L.) has been shown to possesses various biological activities such as wound healing activity, antioxidant activity, antibacterial activity, antiviral activity, immunostimulant activity, anticholinergic activity, antifungal activity, insect repellant activity, anticonvulsant activity, antimutagenic activity, and analgesic an...
Article
Full-text available
Cotinine (COT) and 6-hydroxy-L-nicotine (6HLN) are two nicotinic derivatives that possess cognitive-improving abilities and antioxidant properties in different rodent models of Alzheimer’s disease (AD), eluding the side-effects of nicotine (NIC), the parent molecule. In the current study, we evaluated the impact of COT and 6HLN on memory deteriorat...
Article
Full-text available
Hericium erinaceus is a medicinal fungal species that produces the active biological metabolite erinacine A with strong antioxidant activity. The classical extraction techniques used to date to obtain metabolites from this fungal species require high consumption of resources and energy and, in the end, prove to be expensive and inefficient, especia...
Article
Full-text available
The nicotinic derivatives, cotinine (COT), and 6-hydroxy-L-nicotine (6HLN), showed promising cognitive-improving effects without exhibiting the nicotine’s side-effects. Here, we investigated the impact of COT and 6HLN on memory impairment and the oxidative stress in the Aβ25-35-induced rat model of Alzheimer’s disease (AD). COT and 6HLN were chroni...
Article
Full-text available
Rhoifolin (Rho) exerts many biological activities such as anticancer, antidiabetic, hepatoprotective, antirheumatic, antibacterial, and antiviral properties. The neuroprotective action of this compound has not been studied. The goal of this study was to investigate the improvement impact of Rho on scopolamine (Sco)-induced zebrafish anxiety, amnesi...
Article
Full-text available
Alzheimer’s disease (AD) could be considered a multifactorial neurodegenerative disorder characterized by the accumulation of the β-amyloid-peptide (Aβ) within the brain leading to cognitive deficits, oxidative stress, and neuroinflammation. The present work was carried out to investigate the neuroprotective effect of (-)-cis-carveol (1% and 3%, fo...
Article
Full-text available
Ceratonia siliqua L. is a Mediterranean medicinal plant traditionally cultivated for its ethnopharmacological benefits, such as antidiarrheal, antidiabetic, enhance acetylcholine, antioxidant, antiatherosclerotic, and for its possible anti-neurodegenerative potential. The aim of the present study was to evaluate the chemical composition, as well as...
Article
Full-text available
The present study investigated the capability of an essential oil mix (MO: 1% and 3%) in ameliorating amnesia and brain oxidative stress in a rat model of scopolamine (Sco) and tried to explore the underlying mechanism. The MO was administered by inhalation to rats once daily for 21 days, while Sco (0.7 mg/kg) treatment was delivered 30 min before...
Article
Full-text available
Rosmarinus officinalis L. is a traditional herb with various therapeutic applications such as antibacterial, antioxidant, anti-inflammatory, antidepressant, and anticholinesterase activities, and can be used for the prevention or treatment of dementia. In the present study, we tested whether Rosmarinus officinalis L. could counteract scopolamine-in...
Article
Full-text available
Schinus terebinthifolius is a plant well recognized for its therapeutic profile such as anti-inflammatory and antitumor activities, promoting antibacterial activity and antioxidant and antidiabetic properties. .is study aimed at examining whether Schinus terebinthifolius memory-enhancing activities are mediated by cholinergic and brain antioxidant...
Article
Full-text available
Anxiety and depression are the most common mental disorders that increase morbidity in the world, and recent data (World Health Organization - WHO) show that over 322 million people suffer from depression and anxiety, especially women being more exposed than men. 6-Hydroxydopamine (6-OHDA) is a catecholaminergic neurotoxin which is formed endogenou...
Article
Background Agathisflavone, a biflavonoid isolated from Schinus polygamus (Cav.) Cabrera leaves been reported to promote various biological activities such as anti-inflammatory properties, promoting cognition and preventing cancer, antioxidant and antiapoptotic activities. Purpose Here, we tested the hypothesis whether anxiety, amnesia, and brain o...
Article
Natural contaminants, especially mycotoxins, pose a challenge since they are found in a wide range of agricultural crops and differ significantly in chemical structure and symptomatology in humans and signs of disease in animals following exposure to these chemical agents. Mycotoxins are toxic metabolites produced by a diverse group of fungi that c...
Article
The richness in soluble sugars and polyphenols, especially condensed tannins, vitamins, minerals and other phytochemicals, recommends Ceratonia siliqua L. species for use in therapeutic practice, especially in terms of neurotoxicity - a major public health problem. Neurodegenerative disorders arise from various metabolic dysfunctions or from the ad...

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Projects (3)
Project
Paenarthrobacter nicotinovorans pAO1 is a nicotine degrading microorganism that shows promising applications in converting nicotine-containing waste into useful green chemicals. Its biotechnological applications are nevertheless hampered by the lack of knowledge and tools to perform genetic and metabolic engineering. After solving the nicotine-induced proteome of this bacteria, the project leader of the current proposal concluded that none of the draft genomes available for this strain are complete. The current application aims to provide the first complete and annotated genome of P. nicotinovorans pAO1, and, as such, the first complete genome of a nicotine degrading microorganism. In order to achieve this, P. nicotinovorans pAO1 gDNA will be isolated and whole-genome sequencing (WGS) will be performed using two platforms: NGS Illumina for reading depth and ONT MinION for scaffolding and assembling the genome. The quality of the assembly and annotation will be addressed using dRNA-seq and the already available raw proteomics data. The project will not only strengthen the much need bioinformatics know-how in the already existing team of the project leader, but also will group allow the group to generate a genome-scale metabolic model of the nicotine metabolism, and, consecutively, to develop high yield biotechnologies for production on nicotine derivatives.
Archived project
6-hidroxy-nicotine (6HNic), a naturally occurring metabolite of Arthrobacter nicotinovorans was shown to bind the nicotinic acetylcholine receptors and to modulate their function. Experimental tests using laboratory rats have shown the ability of 6HNic to cope with the acetylcholine depletion and to restore normal brain functions. 6HNic has been thereby identified as a high impact bio-pharmaceutical with application in the therapy of neurodegenerative disorders associated with low acetylcholine levels. The scope of the project is to develop a technology for the production of the neuroprotective agent 6HNic in an industrial-like environment and to test it at a pilot scale. For this, a genetically engineered Arthrobacter strain has been created. The mutant strain has been accommodated to a bio-reactor and the conditions for optimum 6HNic production are to be evaluated. The final goal is to formulate a microbial-based biotechnology for the production of 6HNic ready to be transferred to the industrial environment.
Archived project