The Comparative Analysis of Antiviral Activity of Native and Modified Fucoidans from Brown Algae Fucus evanescens In Vitro and In Vivo

The enzymatic depolymerization of fucoidans from brown algae allowed the production of their standardized derivatives with different biological activities. This work aimed to compare the antiviral activities of native (FeF) and modified with enzyme (FeHMP) fucoidans from F. evanescens. The cytotoxicity and antiviral activities of the FeF and FeHMP against herpes viruses (HSV-1, HSV-2), enterovirus (ECHO-1), and human immunodeficiency virus (HIV-1) in Vero and human MT-4 cell lines were examined by methylthiazolyltetrazolium bromide (MTT) and cytopathic effect (CPE) reduction assays, respectively. The efficacy of fucoidans in vivo was evaluated in the outbred mice model of vaginitis caused by HSV-2. We have shown that both FeF and FeHMP significantly inhibited virus-induced CPE in vitro and were more effective against HSV. FeF exhibited antiviral activity against HSV-2 with a selective index (SI) > 40, and FeHMP with SI ˃ 20, when they were added before virus infection or at the early stages of the HSV-2 lifecycle. Furthermore, in vivo studies showed that after intraperitoneal administration (10 mg/kg), both FeF and FeHMP protected mice from lethal intravaginal HSV-2 infection to approximately the same degree (44–56%). Thus, FeF and FeHMP have comparable potency against several DNA and RNA viruses, allowing us to consider the studied fucoidans as promising broad-spectrum antivirals.

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Antiviral Effects of Plant Extracts Used in the Treatment of Important Animal Viral Diseases

World s Veterinary Journal ◽

10.54203/scil.2021.wvj67 ◽

2021 ◽

Vol 11 (4) ◽

pp. 521-533

Author(s):

Gamil Sayed Gamil Zeedan ◽

Abeer Mostafa Abdalhamed

Keyword(s):

Antiviral Activity ◽

Viral Infection ◽

Plant Extracts ◽

Rna Viruses ◽

Biological Activities ◽

Antiviral Drugs ◽

Antiviral Compounds ◽

Antiviral Activities

The goal of this review was to highlight some plant species that have significant antiviral activity against DNA and RNA viruses in vitro and in vivo although more research is needed to address safety issues, drug interactions, and the possibility of using them in combination with other natural products. Viral infection plays an important role in human and animal diseases. Although there have been advances in immunization and antiviral drugs, there is still a lack of protective vaccines and effective antiviral drugs in human and veterinary medicine. The lack of effective antivirals necessitates the search for new effective antiviral compounds. Plants are naturally gifted at synthesizing antiviral compounds. They are rich sources of phytochemicals with different biological activities, including antiviral activities as a result of advanced analytical chemistry, standard virus assays, and development of standardization and extraction methods. Plant extracts have a wide variety of active compounds, including flavonoids, terpenoids, lignans, sulphides, polyphenolics, coumarins, saponins, furyl compounds, alkaloids, polyines, thiophenes, proteins, and peptides. Moreover, certain volatile oils have indicated a high level of antiviral activity. Replication, assembly, and release, as well as targeting virus host-specific interactions capable of inhibiting several viruses, could help the development of broad-spectrum antivirals for the prevention and control of viral pathogens. The in vitro antiviral activities of Erythroxylum deciduum, Lacistema hasslerianum (chodat), Xylopia aromatica, Heteropteris aphrodisiaca, Acacia nilotica (gum arabic tree), Lippia graveolens (Guettarda angelica (Velvetseed), Prunus myrtifolia, and Symphyopappus plant extracts can inhibite viral replication, and interfer with the early stages of viral adsorption of DNA viruses. However, Boesenbergia rotunda plant extracts have inhibited RNA viruses. A potent anti-SARS-CoV-2 inhibitor with B. rotunda extract and panduratin A after viral infection drastically suppresses SARS-CoV-2 infectivity in Vero E6 cells.

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Metabolomics of Healthy Berry Fruits

Current Medicinal Chemistry ◽

10.2174/0929867323666161206100006 ◽

2019 ◽

Vol 25 (37) ◽

pp. 4888-4902 ◽

Cited By ~ 3

Author(s):

Gilda D'Urso ◽

Sonia Piacente ◽

Cosimo Pizza ◽

Paola Montoro

Keyword(s):

Biological Activities ◽

Biologically Active ◽

In Vivo Studies ◽

Bioactive Metabolites ◽

Active Metabolites ◽

Positive Effects ◽

Cell Functions ◽

Berry Fruits

The consumption of berry-type fruits has become very popular in recent years because of their positive effects on human health. Berries are in fact widely known for their health-promoting benefits, including prevention of chronic disease, cardiovascular disease and cancer. Berries are a rich source of bioactive metabolites, such as vitamins, minerals, and phenolic compounds, mainly anthocyanins. Numerous in vitro and in vivo studies recognized the health effects of berries and their function as bioactive modulators of various cell functions associated with oxidative stress. Plants have one of the largest metabolome databases, with over 1200 papers on plant metabolomics published only in the last decade. Mass spectrometry (MS) and NMR (Nuclear Magnetic Resonance) are the most important analytical technologies on which the emerging ''omics'' approaches are based. They may provide detection and quantization of thousands of biologically active metabolites from a tissue, working in a ''global'' or ''targeted'' manner, down to ultra-trace levels. In the present review, we highlighted the use of MS and NMR-based strategies and Multivariate Data Analysis for the valorization of berries known for their biological activities, important as food and often used in the preparation of nutraceutical formulations.

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Phenolic Composition and Antioxidant Activity of Plants Belonging to the Cephalaria (Caprifoliaceae) Genus

Plants ◽

10.3390/plants10050952 ◽

2021 ◽

Vol 10 (5) ◽

pp. 952

Author(s):

Małgorzata Chrząszcz ◽

Barbara Krzemińska ◽

Rafał Celiński ◽

Katarzyna Szewczyk

Keyword(s):

Antioxidant Activity ◽

Lung Diseases ◽

Antioxidative Activity ◽

Biological Activities ◽

Natural Antioxidants ◽

Antioxidant Effect ◽

In Vivo Studies ◽

Phenolic Composition

The genus Cephalaria, belonging to the Caprifoliaceae family, is a rich source of interesting secondary metabolites, including mainly saponins which display a variety of biological activities, such as immunomodulatory, antimicrobial and hemolytic effects. Besides these compounds, flavonoids and phenolic acids were identified in Cephalaria species. Cephalaria is employed in traditional medicine e.g., to cure cardiac and lung diseases, rheumatism, and regulate menstruation. In this review we focus on the phenolic compound composition and antioxidative activity of Cephalaria species. The antioxidant effect can be explained by flavonoids present in all parts of these plants. However, future efforts should concentrate more on in vitro and in vivo studies and also on clinical trials in order to confirm the possibility of using these plants as natural antioxidants for the pharmacology, food or cosmetic industries.

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In vitro biological activities and in vivo hepatoprotective role of brown algae-isolated fucoidans

Environmental Science and Pollution Research ◽

10.1007/s11356-020-11892-9 ◽

2021 ◽

Author(s):

Marwa E. Atya ◽

Amr El-Hawiet ◽

Mohamed A. Alyeldeen ◽

Doaa A. Ghareeb ◽

Mohamed M. Abdel-Daim ◽

...

Keyword(s):

Brown Algae ◽

Biological Activities

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Three-Dimensional Zirconia-Based Scaffolds for Load-Bearing Bone-Regeneration Applications: Prospects and Challenges

Materials ◽

10.3390/ma14123207 ◽

2021 ◽

Vol 14 (12) ◽

pp. 3207

Author(s):

Kumaresan Sakthiabirami ◽

Vaiyapuri Soundharrajan ◽

Jin-Ho Kang ◽

Yunzhi Peter Yang ◽

Sang-Won Park

Keyword(s):

Bone Regeneration ◽

Biological Activities ◽

Three Dimensional ◽

In Vivo Studies ◽

High Mechanical Strength ◽

Real World Applications ◽

3D Fabrication ◽

Dental Applications

The design of zirconia-based scaffolds using conventional techniques for bone-regeneration applications has been studied extensively. Similar to dental applications, the use of three-dimensional (3D) zirconia-based ceramics for bone tissue engineering (BTE) has recently attracted considerable attention because of their high mechanical strength and biocompatibility. However, techniques to fabricate zirconia-based scaffolds for bone regeneration are in a stage of infancy. Hence, the biological activities of zirconia-based ceramics for bone-regeneration applications have not been fully investigated, in contrast to the well-established calcium phosphate-based ceramics for bone-regeneration applications. This paper outlines recent research developments and challenges concerning numerous three-dimensional (3D) zirconia-based scaffolds and reviews the associated fundamental fabrication techniques, key 3D fabrication developments and practical encounters to identify the optimal 3D fabrication technique for obtaining 3D zirconia-based scaffolds suitable for real-world applications. This review mainly summarized the articles that focused on in vitro and in vivo studies along with the fundamental mechanical characterizations on the 3D zirconia-based scaffolds.

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Characterization of Weissella viridescens UCO-SMC3 as a Potential Probiotic for the Skin: Its Beneficial Role in the Pathogenesis of Acne Vulgaris

Microorganisms ◽

10.3390/microorganisms9071486 ◽

2021 ◽

Vol 9 (7) ◽

pp. 1486

Author(s):

Marcela Espinoza-Monje ◽

Jorge Campos ◽

Eduardo Alvarez Villamil ◽

Alonso Jerez ◽

Stefania Dentice Maidana ◽

...

Keyword(s):

Immune Response ◽

Oral Treatment ◽

Acne Vulgaris ◽

Topical Administration ◽

In Vivo Studies ◽

Mice Model ◽

Cutibacterium Acnes ◽

Snail Helix Aspersa

Previously, we isolated lactic acid bacteria from the slime of the garden snail Helix aspersa Müller and selected Weissella viridescens UCO-SMC3 because of its ability to inhibit in vitro the growth of the skin-associated pathogen Cutibacterium acnes. The present study aimed to characterize the antimicrobial and immunomodulatory properties of W. viridescens UCO-SMC3 and to demonstrate its beneficial effect in the treatment of acne vulgaris. Our in vitro studies showed that the UCO-SMC3 strain resists adverse gastrointestinal conditions, inhibits the growth of clinical isolates of C. acnes, and reduces the adhesion of the pathogen to keratinocytes. Furthermore, in vivo studies in a mice model of C. acnes infection demonstrated that W. viridescens UCO-SMC3 beneficially modulates the immune response against the skin pathogen. Both the oral and topical administration of the UCO-SCM3 strain was capable of reducing the replication of C. acnes in skin lesions and beneficially modulating the inflammatory response. Of note, orally administered W. viridescens UCO-SMC3 induced more remarkable changes in the immune response to C. acnes than the topical treatment. However, the topical administration of W. viridescens UCO-SMC3 was more efficient than the oral treatment to reduce pathogen bacterial loads in the skin, and effects probably related to its ability to inhibit and antagonize the adhesion of C. acnes. Furthermore, a pilot study in acne volunteers demonstrated the capacity of a facial cream containing the UCO-SMC3 strain to reduce acne lesions. The results presented here encourage further mechanistic and clinical investigations to characterize W. viridescens UCO-SMC3 as a probiotic for acne vulgaris treatment.

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In silico screening of phytoconstituents with antiviral activities against SARS-COV-2 main protease, Nsp12 polymerase and Nsp13 helicase proteins

Letters in Drug Design & Discovery ◽

10.2174/1570180818666210317162502 ◽

2021 ◽

Vol 18 ◽

Author(s):

Jainey James ◽

Divya Jyothi ◽

Sneh Priya

Keyword(s):

Antiviral Activity ◽

Molecular Interactions ◽

In Silico ◽

Antiviral Treatment ◽

In Vivo Studies ◽

Main Protease ◽

Hypothesis Model ◽

Antiviral Activities ◽

Pharmacophore Hypothesis

Aims: The present study aim was to analyse the molecular interactions of the phytoconstituents known for their antiviral activity with the SARS-CoV-2 nonstructural proteins such as main protease (6LU7), Nsp12 polymerase (6M71), and Nsp13 helicase (6JYT). The applied in silico methodologies was molecular docking and pharmacophore modeling using Schrodinger software. Methods: The phytoconstituents were taken from PubChem, and SARS-CoV-2 proteins were downloaded from the protein data bank. The molecular interactions, binding energy, ADMET properties and pharmacophoric features were analysed by glide XP, prime MM-GBSA, qikprop and phase application of Schrodinger respectively. The antiviral activity of the selected phytoconstituents was carried out by PASS predictor, online tools. Results: The docking score analysis showed that quercetin 3-rhamnoside (-8.77 kcal/mol) and quercetin 3-rhamnoside (-7.89 kcal/mol) as excellent products to bind with their respective targets such as 6LU7, 6M71 and 6JYT. The generated pharmacophore hypothesis model validated the docking results, confirming the hydrogen bonding interactions of the amino acids. The PASS online tool predicted constituent's antiviral potentials. Conclusion: The docked phytoconstituents showed excellent interactions with the SARS-CoV-2 proteins, and on the outset, quercetin 3-rhamnoside and quercetin 7-rhamnoside have well-interacted with all the three proteins, and these belong to the plant Houttuynia cordata. The pharmacophore hypothesis has revealed the characteristic features responsible for their interactions, and PASS prediction data has supported their antiviral activities. Thus, these natural compounds could be developed as lead molecules for antiviral treatment against SARS-CoV-2. Further in-vitro and in-vivo studies could be carried out to provide better drug therapy.

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Contribution to the biological interest of Valeriana officinalis: an update

Mediterranean Botany ◽

10.5209/mbot.70280 ◽

2021 ◽

Vol 42 ◽

pp. e67649

Author(s):

Marta Sánchez ◽

Elena González-Burgos ◽

Irene Iglesias ◽

M. Pilar Gómez-Serranillos Cuadrado

Keyword(s):

Clinical Trials ◽

Nervous System ◽

Biological Activities ◽

In Vivo Studies ◽

Neuroprotective Activity ◽

Future Research ◽

Valeriana Officinalis ◽

Valerenic Acid

Valeriana officinalis L. (Caprifoliaceae family) has been traditionally used to treat mild nervous tension and sleep problems. The basis of these activities are mainly attributed to valerenic acid through the modulation of the GABA receptor. Moreover, V. officinalis is claimed to have other biological activities such as cardiovascular benefits, anticancer, antimicrobial and spasmolytic. The current review aims to update the biological and pharmacological studies (in vitro, in vivo and clinical trials) of V. officinalis and its major secondary metabolites in order to guide future research. Databases PubMed, Science Direct and Scopus were used for literature search including original papers written in English and published between 2014 and 2020. There have been identified 33 articles which met inclusion criteria. Most of these works were performed with V. officinalis extracts and only a few papers (in vitro and in vivo studies) evaluated the activity of isolated compounds (valerenic acid and volvalerenal acid K). In vitro studies focused on studying antioxidant and neuroprotective activity. In vivo studies and clinical trials mainly investigated activities on the nervous system (anticonvulsant activity, antidepressant, cognitive problems, anxiety and sleep disorders). Just few studies were focused on other different activities, highlight effects on symptoms of premenstrual and postmenopausal syndromes. Valeriana officinalis continues to be one of the medicinal plants most used by today's society for its therapeutic properties and whose biological and pharmacological activities continue to arouse great scientific interest as evidenced in recent publications. This review shows scientific evidence on traditional uses of V. officinalis on nervous system.

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Isolation of hydroxytyrosol from olive leaves extract, radioiodination and investigation of bioaffinity using in vivo/in vitro methods

Radiochimica Acta ◽

10.1524/ract.2013.2068 ◽

2013 ◽

Vol 101 (9) ◽

pp. 585-593 ◽

Cited By ~ 1

Author(s):

M. Ozkan ◽

F. Z. Biber Muftuler ◽

A. Yurt Kilcar ◽

E. I. Medine ◽

P. Unak

Keyword(s):

Small Intestine ◽

Phenolic Compounds ◽

Biological Activities ◽

In Vivo Studies ◽

Flavonoid Content ◽

Olive Leaves ◽

In Vitro Methods ◽

Extraction And Purification

Summary It is known that medicinal plants like olive have biological activities due to their flavonoid content such as olueropein, tyrosol, hydroxytyrosol etc. In current study, hydroxytrosol (HT) which is one of the major phenolic compounds in olive, olive leaves and olive oil, was isolated after methanol extraction and purification of olive leaves which are grown in the northern Anatolia region of Turkey. The isolated HT was radiolabeled with 131I (131I-HT) and the bioaffinity of this radiolabeled component of olive leaves extract was investigated by using in vivo/in vitro methods. It was found that HT could be radiolabeled with 131I in yields of 95.6±4.4% (n = 8), and in vivo studies showed that 131I-HT is taken up by urinary bladder, stomach, small intestine, large intestine, breast and prostate. Significant incorporation of activity was observed in cell lines via in vitro studies.

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