scholarly journals Sulfated Polysaccharides From Sea Algae as the Basis of Modern Biotechnologies for Creating Wound Coverings: Current Achievements and Coming Prospects

2020 ◽  
Author(s):  
Boris Andryukov ◽  
Natalya Besednova ◽  
Tatyana Kuznetsova ◽  
Tatyana Zaporozhets ◽  
Svetlana Ermakova ◽  
...  
Keyword(s):  
Wound Healing ◽  
Clinical Trial Data ◽  
Biological Properties ◽  
Biologically Active ◽  
Wound Dressings ◽  
Sulfated Polysaccharides ◽  
Accelerate Wound Healing ◽  
In Vivo Experiments

Wound healing involves a complex cascade of cellular, molecular, and biochemical responses and signaling processes. It consists of successive interrelated phases, the duration of which depends on multifactorial processes. Wound treatment is a major healthcare issue that can be resolved by development of effective and affordable wound dressings based on natural materials and biologically active substances. Proper use of modern wound dressings can significantly accelerate wound healing with minimal cosmetic defects. The innovative biotechnologies for creating modern natural interactive dressings are based on sulfated polysaccharides from seaweeds with their unique structures and biological properties, the availability of their sources in the form of wild bushes, and in the form of aquaculture, as well as with a high potential for participation in process control wound healing. These natural biopolymers are a novel and promising biologically active source for designing wound dressings based on alginates, fucoidans, carrageenans, and ulvans, which serve as active and effective therapeutic tools. The aim of this review is to summarize available information about the modern wound dressing’s technologies based on seaweed-derived polysaccharides, including those successfully implemented in commercial products, with the emphasis on promising and innovative designs. The further prospect of using marine biopolymers is related to the need to analyze the results of numerous in vitro and in vivo experiments, summarize clinical trial data, develop a scientifically based approach and relevant practical recommendations for the treatment of wounds.

scholarly journals Sulfated Polysaccharides from Marine Algae as a Basis of Modern Biotechnologies for Creating Wound Dressings: Current Achievements and Future Prospects

Biomedicines ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 301 ◽  
Author(s):  
Boris G. Andryukov ◽  
Natalya N. Besednova ◽  
Tatyana A. Kuznetsova ◽  
Tatyana S. Zaporozhets ◽  
Svetlana P. Ermakova ◽  
...  
Keyword(s):  
Wound Healing ◽  
Clinical Trial Data ◽  
Biological Properties ◽  
Biologically Active ◽  
Wound Dressings ◽  
Sulfated Polysaccharides ◽  
Wound Treatment ◽  
Accelerate Wound Healing ◽  
Therapeutic Tools ◽  
Scar Mark

Wound healing involves a complex cascade of cellular, molecular, and biochemical responses and signaling processes. It consists of successive interrelated phases, the duration of which depends on a multitude of factors. Wound treatment is a major healthcare issue that can be resolved by the development of effective and affordable wound dressings based on natural materials and biologically active substances. The proper use of modern wound dressings can significantly accelerate wound healing with minimum scar mark. Sulfated polysaccharides from seaweeds, with their unique structures and biological properties, as well as with a high potential to be used in various wound treatment methods, now undoubtedly play a major role in innovative biotechnologies of modern natural interactive dressings. These natural biopolymers are a novel and promising biologically active source for designing wound dressings based on alginates, fucoidans, carrageenans, and ulvans, which serve as active and effective therapeutic tools. The goal of this review is to summarize available information about the modern wound dressing technologies based on seaweed-derived polysaccharides, including those successfully implemented in commercial products, with a focus on promising and innovative designs. Future perspectives for the use of marine-derived biopolymers necessitate summarizing and analyzing results of numerous experiments and clinical trial data, developing a scientifically substantiated approach to wound treatment, and suggesting relevant practical recommendations.

scholarly journals Clitoria ternatea - Shifting Paradigms: From Laboratory to Industry

2021 ◽  
pp. 18-26
Author(s):  
C. B. Ranaweera ◽  
A. K. Chandana
Keyword(s):  
Folk Medicine ◽  
Biological Properties ◽  
Biologically Active ◽  
Potential Health ◽  
Clitoria Ternatea ◽  
In Vivo Experiments ◽  
Industrial Level ◽  
New Treatments

Clitoria ternatea commonly known as Butterfly pea is a standard Ayurvedic medicinal plant used in many parts of south Asian countries. Traditional medicinal plants are a great alternative to find new treatments and for the development of novel antimicrobials to combat many diseases. In Ayurveda and traditional and folk medicine in several countries, decoction and extracts made from C. ternatea are recommended to be used for various medical treatments. C. ternatea extracts claimed to possess antibacterial, antiviral, and antifungal properties, which had been supported and validated by many in vitro and in vivo experiments. However, biologically active compound/s isolation and development novel compounds still remain in its infancy. Despite its enormous potential health benefits, only a single commercial product managed to reach industrial level production. C. ternatea cyclotide studies are also limited despite the fact that it the fastest known natural ligase discovered to date. These cyclotides are rapid peptide ligators and has been the focus of many recent studies on peptide ligation and cyclization for biotechnological applications. In this mini summary we have tried to point out innate unique biological properties of C. ternatea and suggested few future studies, more specifically on C. ternatea cyclotides development against bacterial heat shock proteins (Hsp 100) for novel antimicrobial discovery and development.

scholarly journals Exosomal Vimentin from Adipocyte Progenitors Protects Fibroblasts against Osmotic Stress and Inhibits Apoptosis to Enhance Wound Healing

2021 ◽  
Vol 22 (9) ◽  
pp. 4678
Author(s):  
Sepideh Parvanian ◽  
Hualian Zha ◽  
Dandan Su ◽  
Lifang Xi ◽  
Yaming Jiu ◽  
...  
Keyword(s):  
Wound Healing ◽  
Osmotic Stress ◽  
Mechanical Stress ◽  
Impaired Wound Healing ◽  
In Vivo Experiments ◽  
Adipocyte Progenitors ◽  
Osmotic Balance ◽  
Induced Apoptosis

Mechanical stress following injury regulates the quality and speed of wound healing. Improper mechanotransduction can lead to impaired wound healing and scar formation. Vimentin intermediate filaments control fibroblasts’ response to mechanical stress and lack of vimentin makes cells significantly vulnerable to environmental stress. We previously reported the involvement of exosomal vimentin in mediating wound healing. Here we performed in vitro and in vivo experiments to explore the effect of wide-type and vimentin knockout exosomes in accelerating wound healing under osmotic stress condition. Our results showed that osmotic stress increases the size and enhances the release of exosomes. Furthermore, our findings revealed that exosomal vimentin enhances wound healing by protecting fibroblasts against osmotic stress and inhibiting stress-induced apoptosis. These data suggest that exosomes could be considered either as a stress modifier to restore the osmotic balance or as a conveyer of stress to induce osmotic stress-driven conditions.

scholarly journals Development of Spanish Broom and Flax Dressings with Glycyrrhetinic Acid-Loaded Films for Wound Healing: Characterization and Evaluation of Biological Properties

Pharmaceutics ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1192
Author(s):  
Angela Abruzzo ◽  
Concettina Cappadone ◽  
Valentina Sallustio ◽  
Giovanna Picone ◽  
Martina Rossi ◽  
...  
Keyword(s):  
Wound Healing ◽  
Drug Loading ◽  
Healing Process ◽  
In Vitro Release ◽  
Sodium Hyaluronate ◽  
Biological Properties ◽  
Glycyrrhetinic Acid ◽  
Wound Dressings ◽  
Biological Studies

The selection of an appropriate dressing for each type of wound is a very important procedure for a faster and more accurate healing process. So, the aim of this study was to develop innovative Spanish Broom and flax wound dressings, as alternatives to cotton used as control, with polymeric films containing glycyrrhetinic acid (GA) to promote wound-exudate absorption and the healing process. The different wound dressings were prepared by a solvent casting method, and characterized in terms of drug loading, water uptake, and in vitro release. Moreover, biological studies were performed to evaluate their biocompatibility and wound-healing efficacy. Comparing the developed wound dressings, Spanish Broom dressings with GA-loaded sodium hyaluronate film had the best functional properties, in terms of hydration ability and GA release. Moreover, they showed a good biocompatibility, determining a moderate induction of cell proliferation and no cytotoxicity. In addition, the wound-healing test revealed that the Spanish Broom dressings promoted cell migration, further facilitating the closure of the wound.

scholarly journals Combination of in vivo phage therapy data with in silico model highlights key parameters for treatment efficacy

2021 ◽  
Author(s):  
Raphaelle Delattre ◽  
Jeremy Seurat ◽  
Feyrouz Haddad ◽  
Thu-Thuy Nguyen ◽  
Baptiste Gaborieau ◽  
...  
Keyword(s):  
Phage Therapy ◽  
Biological Properties ◽  
General Strategy ◽  
In Vivo Experiments ◽  
Bacterial Dynamics ◽  
Optimal Dosing ◽  
Dosing Regimens ◽  
The Impact

The clinical (re)development of phage therapy to treat antibiotic resistant infections requires grasping specific biological properties of bacteriophages (phages) as antibacterial. However, identification of optimal dosing regimens is hampered by the poor understanding of phage-bacteria interactions in vivo. Here we developed a general strategy coupling in vitro and in vivo experiments with a mathematical model to characterize the interplay between phage and bacterial dynamics during pneumonia induced by a pathogenic strain of Escherichia coli. The model estimates some key parameters for phage therapeutic efficacy, in particular the impact of dose and route of administration on phage dynamics and the synergism of phage and the innate immune response on the bacterial clearance rate. Simulations predict a low impact of the intrinsic phage characteristics in agreement with the current semi-empirical choices of phages for compassionate treatments. Model-based approaches will foster the deployment of future phage therapy clinical trials.

scholarly journals Identification of Structurally Similar Phytochemicals to Quercetin with High SIRT1 Binding Affinity and Improving Diabetic Wound Healing by Using In silico Approaches

2021 ◽  
Vol 12 (6) ◽  
pp. 7621-7632
Keyword(s):  
Wound Healing ◽  
In Silico ◽  
Binding Free Energy ◽  
Biological Properties ◽  
In Vivo Studies ◽  
Diabetic Wound ◽  
Binding Modes ◽  
Diabetic Wound Healing

Diabetes Mellitus is the most prevalent metabolic disorder that is increasing at an alarming rate worldwide. The unregulated glucose level leads to various types of health disorders, and one of the major diabetic complications is delayed wound healing. Due to the more side effects of synthetic drugs, there is a need to explore plants and their phytochemicals for medicinal purposes. It was found that Quercetin, a flavonoid, increases the rate of diabetic wound healing by enhancing the expression of SIRT1. This demands more insight towards Quercetin and its similar compounds, as it is hypothesized that similar compounds may have similar biological properties. Thus similarity searching was done to identify the most similar compounds of Quercetin, and then the molecular docking of the screened compounds was performed using AutoDock Vina. The unique ligands were docked into the active site of SIRT1 protein (PDB ID: 4ZZJ). The binding free energy of the interacting ligand with the protein was estimated. Six compounds were identified which possess the maximum structural similarity with Quercetin, and upon docking, it was found that gossypetin and herbacetin have similar binding modes and binding energy as that of Quercetin (-7.5 kcal/mol). Therefore, the hypothesis has been validated by in silico analysis. Our study identified two phytochemicals, Gossypetin, and Herbacetin which can prove beneficial for improving diabetic wound healing but needs to be validated further by in vitro and in vivo studies.

Przeciwnowotworowe działanie składników propolisu. Cz. 1. Ester fenyloetylowy kwasu kawowego (CAPE)

2020 ◽  
Vol 21 (3) ◽  
Author(s):  
Bogdan Kędzia ◽  
Elżbieta Hołderna-Kędzia
Keyword(s):  
Human Colon ◽  
Caffeic Acid Phenethyl Ester ◽  
Biological Properties ◽  
Biologically Active ◽  
Significant Activity ◽  
Colon Adenoma ◽  
Cancer Cell Survival ◽  
Ht 29

The paper presents a review of the publications on the anticancerogenic activity of the biologically active component of propolis – caffeic acid phenethyl ester (CAPE). Literature data indicate numerous biological properties of CAPE, namely: antioxidant, anti-inflammatory, antiviral, immunostimulatory, anti-angiogenic and others. In numerous tests, both in vitro and in vivo, the significant activity of CAPE has been confirmed, including an action against HT-29 human colon adenoma cells, and five: human, murine and other tumor cell cultures. The authors also emphasize that CAPE supports the anticancerogenic effect of drugs, including doxorubicin and cisplatin, due to the reduction of cancer cell survival by 45% and 34%, respectively, compared to the above-mentioned drugs used alone. The conducted research indicates that the induction of apoptosis in cells, i.e. programmed cell death, can be mentioned among the main mechanisms of the anticancerogenic activity of CAPE.

INFLUENCE OF THE SULFATION PATTERN ON CERTAIN BIOLOGICAL PROPERTIES OF GALACTOSAMINOGLYCANS

1987 ◽  
Author(s):  
B Casu ◽  
L Marchese ◽  
A Naggi ◽  
G Torri ◽  
J Fareed ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Dermatan Sulfate ◽  
Anticoagulant Activity ◽  
Chlorosulfonic Acid ◽  
Biological Properties ◽  
Sulfated Polysaccharides ◽  
Low Molecular Weight ◽  
Antithrombotic Activity

In order to investigate the influence of charge distribution and chain length on the biological properties of sulfated polysaccharides, additional sulfate groups were introduced into the galactosaminoglycans, chondriotin sulfate and dermatan sulfate. Using a flexible method (with sulfuric acid and chlorosulfonic acid) for concurrent sulfation and controlled depolymerization, numerous products were obtained and characterized by chemical, enzymatic and nuclear magnetic resonance spectroscopic methods. The biologic actions of these products were profiled in both in vitro and in vivo assays for antithrombotic activity. Despite a weaker in vitro anticoagulant activity, low molecular weight over sulfated galactosaminoglycans produced significant dose-dependent antithrombotic actions in animal models which were similar to the actions observed with oversulfated low molecular weight heparins. These results suggest that a significant antithrombotic activity can be elicited through non-specific interactions of polysulfates with cellular and plasma components, and that clusters of sulfate groups such as the 4-6 disulfate group on D-galactosaminoglycan residues may be important for these interactions. Furthermore, these results, also suggest that supersulfation of glycosaminogly-cans results in products with biologic activity distinct from the native material.

scholarly journals Resveratrol-loaded peptide-hydrogels inhibit scar formation in wound healing through suppressing inflammation

2019 ◽  
Author(s):  
Chen-Chen Zhao ◽  
Lian Zhu ◽  
Zheng Wu ◽  
Rui Yang ◽  
Na Xu ◽  
...  
Keyword(s):  
Wound Healing ◽  
Damage Model ◽  
Skin Wound ◽  
Scar Formation ◽  
Wound Dressings ◽  
Skin Damage ◽  
Skin Wound Healing ◽  
Accelerate Wound Healing ◽  
Peptide Hydrogels

Abstract Scar formation seriously affects the repair of damaged skin especially in adults and the excessive inflammation has been considered as the reason. The self-assembled peptide-hydrogels are ideal biomaterials for skin wound healing due to their similar nanostructure to natural extracellular matrix, hydration environment and serving as drug delivery systems. In our study, resveratrol, a polyphenol compound with anti-inflammatory effect, is loaded into peptide-hydrogel (Fmoc-FFGGRGD) to form a wound dressing (Pep/RES). Resveratrol is slowly released from the hydrogel in situ, and the release amount is controlled by the loading amount. The in vitro cell experiments demonstrate that the Pep/RES has no cytotoxicity and can inhibit the production of pro-inflammatory cytokines of macrophages. The Pep/RES hydrogels are used as wound dressings in rat skin damage model. The results suggest that the Pep/RES dressing can accelerate wound healing rate, exhibit well-organized collagen deposition, reduce inflammation and eventually prevent scar formation. The Pep/RES hydrogels supply a potential product to develop new skin wound dressings for the therapy of skin damage.

scholarly journals Development and Evaluation of Alginate Membranes with Curcumin-Loaded Nanoparticles for Potential Wound-Healing Applications

Pharmaceutics ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 389 ◽  
Author(s):  
Mónica C. Guadarrama-Acevedo ◽  
Raisa A. Mendoza-Flores ◽  
María L. Del Prado-Audelo ◽  
Zaida Urbán-Morlán ◽  
David M. Giraldo-Gomez ◽  
...  
Keyword(s):  
Wound Healing ◽  
Wound Dressing ◽  
Clinical Performance ◽  
Ex Vivo ◽  
High Capacity ◽  
Wound Dressings ◽  
In Vivo Studies ◽  
Potential Use

Non-biodegradable materials with a low swelling capacity and which are opaque and occlusive are the main problems associated with the clinical performance of some commercially available wound dressings. In this work, a novel biodegradable wound dressing was developed by means of alginate membrane and polycaprolactone nanoparticles loaded with curcumin for potential use in wound healing. Curcumin was employed as a model drug due to its important properties in wound healing, including antimicrobial, antifungal, and anti-inflammatory effects. To determine the potential use of wound dressing, in vitro, ex vivo, and in vivo studies were carried out. The novel membrane exhibited the diverse functional characteristics required to perform as a substitute for synthetic skin, such as a high capacity for swelling and adherence to the skin, evidence of pores to regulate the loss of transepidermal water, transparency for monitoring the wound, and drug-controlled release by the incorporation of nanoparticles. The incorporation of the nanocarriers aids the drug in permeating into different skin layers, solving the solubility problems of curcumin. The clinical application of this system would cover extensive areas of mixed first- and second-degree wounds, without the need for removal, thus decreasing the patient’s discomfort and the risk of altering the formation of the new epithelium.

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