scholarly journals Nanoemulsion Gel Formulation Optimization for Burn Wounds: Analysis of Rheological and Sensory Properties

Processes ◽  
2020 ◽  
Vol 8 (11) ◽  
pp. 1416
Author(s):  
Małgorzata Miastkowska ◽  
Agnieszka Kulawik-Pióro ◽  
Mariola Szczurek
Keyword(s):  
Aloe Vera ◽  
Protective Layer ◽  
Skin Condition ◽  
Sensory Properties ◽  
Skin Regeneration ◽  
Scattering Method ◽  
Promising Alternative ◽  
Burn Wounds ◽  
Dynamic Light Scattering Method ◽  
Nanoemulsion Gel

Background: Despite the variety of treatment methods for wounds and scars after burns, there are still few effective preparations that can be used in a non-invasive therapy. Recent years have seen significant development of nanomedicine and nanotechnology in the treatment of infection in burn wounds. Proposal: The aim of this work was to develop a formula of a nanoemulsion gel for skin regeneration after burns, and to compare its rheological and sensory properties, as well as the effectiveness of post-burn skin regeneration with preparations available on the market. Methods: At the first stage of studies the composition and parameters of the preparation of sea buckthorn oil-based O/W (oil-in-water) nanoemulsion containing hyaluronic acid and aloe vera gel, as the active ingredients were optimized. Then, the nanoemulsion was added to the gel matrix composed of carbomer (1%) and water which resulted in receiving nanoemulgel. The physicochemical parameters of the obtained samples were characterized by means of dynamic light scattering method and scanning electron microscope. Rheological, sensory and influence on skin condition analysis was conducted for selected market products and developed nanoemulgel. Results: Nanoemulsion gel (d = 211 ± 1.4 nm, polydispersity index (PDI) = 0.205 ± 0.01) was characterized by semi-solid, non-sticky consistency, porous structure, law viscosity, good “primary” and “secondary” skin feelings and pleasant sensorical properties. It improves the condition of burned skin by creating a protective layer on the skin and increasing the hydration level. Conclusion: Due to the fact that the obtained nanoemulsion gel combines the advantages of an emulsion and a gel formulation, it can be a promising alternative to medical cosmetics available on the market, as a form of formulation used in skin care after burns.

Comparative Evaluation of Aloe Vera in the Management of Burn Wounds in Guinea Pigs

1988 ◽  
Vol 81 (3) ◽  
pp. 386-389 ◽  
Author(s):  
Miguel Rodriguez-Bigas ◽  
Norma I. Cruz ◽  
Albert Suarez
Keyword(s):  
Guinea Pigs ◽  
Comparative Evaluation ◽  
Aloe Vera ◽  
Burn Wounds

scholarly journals PRODUCTION OF NON-ROASTING PELLETS FROM THE WASTE OF SHABROVSKY TALCUM COMBINE

2019 ◽  
Vol 62 (3) ◽  
pp. 201-207
Author(s):  
V. S. Gulyakov ◽  
A. S. Vusikhis ◽  
S. A. Petrova
Keyword(s):  
Particle Size ◽  
Planetary Mill ◽  
Raw Material ◽  
Colloidal System ◽  
Scattering Method ◽  
Dynamic Light Scattering Method ◽  
Blast Furnace Production ◽  
Micron Size ◽  
Optimum Proportion ◽  
Technogenic Wastes

Technogenic wastes are by-products of any production. At the same time, they can be a raw material for obtaining useful products. In particular, the waste from the Shabrovsky talcum combine, can be used to produce magnesian fluxes. They are dispersed, so must be agglomerated. Therefore, a method has been proposed for the preparation of non-roasting pellets. As a binder, a mixture of water and peat, treated in a hydropercussion cavitation device, was used. The resulting material is a colloidal system with particle size of less than 10–4 m. To measure the particle size, dynamic light scattering method was used. For comparison, a similar mixture of water and peat treated in a planetary mill was studied. An analysis of the data obtained has shown that particles of micron size occupy up to 90 % of volume in the sample after treatment of the mixture in hydropercussion cavitation device. In a sample that was ground in a planetary mill, most of the particles are characterized by tens or even hundreds of microns. Determination of crushing strength of non-roasting pellets is performed by compressing in a tensile machine of model P-0.5. For this purpose, the granules were used both immediately after granulation and after drying at 105 °C to a moisture content of less than 1.5 %. With an optimum proportion of binders of 15 – 20 %, the strength of raw pellets was 15 N, and the strength of dry pellets was 90 N. With a binder percentage of less than 15 %, both raw and dried pellets had low strength. With a binder content of more than 20 %, the mixture had excessive plasticity and tackiness, which led to the formation of conglomerates of several granules. Despite the fact that the strength parameters of the non-roasting pellet are lower than those of pellets used in blast-furnace production, they are sufficient for use in steelmaking processes.

scholarly journals PECULARITIES OF MICELLE FORMATION OF PENTACYCLIC GLYCOSIDES IN AQUEOUS SOLUTIONS

2021 ◽  
Vol 64 (4) ◽  
pp. 26-33
Author(s):  
Natalia V. Mironenko ◽  
Irina V. Shkutina ◽  
Vladimir F. Selemenev
Keyword(s):  
Surface Tension ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Aqueous Solutions ◽  
Hydrodynamic Radius ◽  
Critical Concentration ◽  
Micelle Formation ◽  
Cylindrical Shape ◽  
Scattering Method ◽  
Dynamic Light Scattering Method

The regularities of changes in structural characteristics during the formation of associates in micellar aqueous solutions of triterpene saponins Quillaja Saponin and Sapindus Mukorossi are considered. The dependence of surface tension and adsorption on the concentration of an aqueous saponin solution is analyzed, and the values of surface activity and parameters of the adsorption layer are calculated. The average values of diffusion coefficients for spherical and cylindrical micelles are determined based on the measurement of the solution viscosity. The effect of the electrolyte solution on the surface tension and viscosity of glycoside solutions is studied: when the electrolyte is introduced into the saponin solution, the surface tension decreases, which leads to a shift in the critical concentration of micelle formation towards lower concentrations. The introduction of potassium chloride electrolyte reduces the degree of ionization and, as a result of suppressing the electroviscosity effect, leads to a decrease in the viscosity of the solution. The dynamic light scattering method is used to determine the size of glycoside aggregates. It is established that there are aggregates of several sizes in an aqueous solution of saponin. The size and shape of aggregates were calculated using the concepts of micelle packing parameters. In the region of very low concentrations of glycoside solutions, when approaching the critical concentration of micelle formation in the solution, there are spherical micelles. A further increase in the saponin concentration in the solution leads to a decrease in the content of structures with a hydrodynamic radius of 50-80 nm and the appearance of larger agglomerates with sizes greater than 100 nm. It was found that micelles acquire a less hydrated and more densely packed cylindrical shape in the concentration range of 1.7-2.6 mmol/dm3. Compaction of associates leads to an increase in the content of particles with a hydrodynamic radius of 150-250 nm and larger ones, and their presence predicts the appearance of larger agglomerates. Analyzing the data obtained using the dynamic light scattering method, it can be concluded that aggregates of several sizes co-exist in the volume of aqueous saponin solutions at certain concentrations.

scholarly journals Surgery and Medicinal Plants: A review of important indigenous medicinal plants of Iran for burn wound healing

2019 ◽  
Vol 6 (2) ◽  
pp. 264-269
Author(s):  
Masoud Sharifian ◽  
Afshin Hasanvand ◽  
Gholam Basati ◽  
Saber Abbaszadeh
Keyword(s):  
Wound Healing ◽  
Medicinal Plants ◽  
Herbal Remedy ◽  
Medical Science ◽  
Aloe Vera ◽  
Centella Asiatica ◽  
Recovery Process ◽  
Herbal Remedies ◽  
Burn Wound ◽  
Burn Wounds

Surgical Science is one of the branches of medical science that deals with surgical and medicinal interventions, which can cure surgical wounds, cuts, burns and so on. The accelerated recovery process has always been a concern for surgeons and physicians. Standard local antibiotic drugs such as silver nitrate, mafenide acetate, sulfadiazine silver and AgNO3 are also used to treat wounds which are associated with some complications. Considering the fact that no effective herbal remedy has been introduced for wound healing, the purpose of this review is to investigate and identify indigenous Iranian herbs used for wound healing after surgery, especially burn wounds. In this systematic review paper, published articles in the period 1952 to 2017 with keywords of surgery, wound healing, burns, herbs, etc. from databases such as SID, MEDLIB, ProQuest, Magiran, Europe PubMed Central and Google Scholar. Abstract and title of all articles were studied and non-relevant articles were deleted and remaining articles were used for review. Based on the results of the study, Malva sylvestris, Camellia sinensis, Aloe vera, Cydonia oblonga, Scrophularia striata, Centella asiatica, Arnebia euchroma, Calendula officinalis and Hypericum perforatum are the most important herbal remedies for burn restoration. The following is an explanation of the most important herbal remedies for native burn wounds in Iran.

NiMoOx as a Highly Protective layer against Photocorrosion for Solar Seawater Splitting

2022 ◽  
Author(s):  
Xiaotian Guo ◽  
Xianhu Liu ◽  
Lei Wang
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
Large Scale ◽  
Surface Reaction ◽  
Protective Layer ◽  
Reaction Dynamics ◽  
Solar Energy Conversion ◽  
Promising Alternative ◽  
Energy Conversion And Storage ◽  
And Storage

Photoelectrochemical (PEC) seawater splitting is a promising alternative for solar energy conversion and storage. However, the sluggish surface reaction dynamics and photocorrosion/corrosion generally limit the semiconductors for potential large-scale application....

Fabrication, characterization and evaluation of the efficacy of gelatin/hyaluronic acid microporous scaffolds suffused with aloe-vera in a rat burn model

2021 ◽  
pp. 088532822110618
Author(s):  
Lalita Mehra ◽  
Smritee Mehra ◽  
Nidhi Tiwari ◽  
Thakuri Singh ◽  
Harish Rawat ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Growth Factor ◽  
Aloe Vera ◽  
Gamma Scintigraphy ◽  
Gravimetric Analysis ◽  
Burn Wounds ◽  
Partial Thickness ◽  
Partial Thickness Burn

Burn induced injuries are commonly encountered in civilian and military settings, leading to severe morbidity and mortality. Objective of this study was to construct microporous bioactive scaffolds of gelatin-hyaluronic acid suffused with aloe-vera gel (Gela/HA/AvG), and to evaluate their efficacy in healing partial-thickness burn wounds. Scaffolds were characterized using Fourier transform-infrared spectroscopy, Scanning electron microscopy, and Thermo-gravimetric analysis to understand intermolecular interactions and morphological characteristics. In-vitro fluid uptake ability and hemolytic index of test scaffolds were also determined. In-vitro collagenase digestion was done to assess biodegradability of scaffolds. Wound retraction studies were carried out in Sprague Dawley rats inflicted with partial-thickness burn wounds to assess and compare efficacy of optimized scaffolds with respect to negative and positive control groups. In-vivo gamma scintigraphy using Technetium-99m labeled Immunoglobulin-G ( 99m Tc-IgG) as imaging agent was also performed to validate efficacy results. Histological and immunohistochemical comparison between groups was also made. Scaffolds exhibited mircoporous structure, with pore size getting reduced from 41.3 ± 4.3 µm to 30.49 ± 5.7 µm when gelatin conc. was varied from 1% to 5%. Optimized test scaffolds showed sustained in-vitro swelling behavior, were biodegradable and showed hemolytic index in range of 2.4–4.3%. Wound retraction study along with in-vivo gamma scintigraphy indicated that Gela/HA/AvG scaffolds were not only able to reduce local inflammation faster but also accelerated dermis regeneration. Immunohistochemical analysis, in terms of expression levels of epidermal growth factor and fibroblast growth factor-2 also corroborated in-vivo efficacy findings. Gela/HA/AvG scaffolds, therefore, can potentially be developed into an effective dermal regeneration template for partial-thickness burn wounds.

Features of the Aggregation of С70 Fullerene in an o-Xylol Solution Revealed by the Dynamic Light Scattering Method

JETP Letters ◽  
2018 ◽  
Vol 108 (10) ◽  
pp. 680-685
Author(s):  
A. V. Arutyunyan ◽  
E. I. Zavatskii ◽  
V. S. Kozlov ◽  
M. V. Suyasova
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Scattering Method ◽  
Dynamic Light Scattering Method

scholarly journals ALOE VERA VS. SILVER SULFADIAZINE FOR TREATING SECOND-DEGREE BURN WOUNDS: EVIDENCE-BASED CASE REPORT

2019 ◽  
pp. 146-148
Author(s):  
CLARA MENNA ◽  
NABILLA CALISTA ◽  
LEORCA AURINO ◽  
ADISTI DWIJAYANTI
Keyword(s):  
Clinical Trials ◽  
Risk Reduction ◽  
Randomized Clinical Trials ◽  
Aloe Vera ◽  
Silver Sulfadiazine ◽  
Number Needed To Treat ◽  
Burn Wounds ◽  
The Third ◽  
Degree Burn ◽  
Second Degree

Objective: Current treatment for second-degree burn wounds, including silver sulfadiazine (SSD) application, may cause side effects such as delayed and incomplete wound healing, leaving a scar. Traditional plants empirically used for burn wounds, such as Aloe vera, seem to be a promising option with good safety profiles. Methods: We therefore compared Aloe vera to SSD for second-degree burn wounds based on a review of clinical trials obtained by an organized search through the Cochrane, PubMed, and DynaMed databases. Three randomized clinical trials studies were selected, two of which were critically appraised. The third study, with a different outcome assessment, was analyzed separately. Results: Two studies showed that Aloe vera was more effective in treating second-degree burn wounds than SSD 1% with an absolute risk reduction of 0.2, relative risk reduction of 0.83–1.0, and number needed to treat five patients. The Aloe vera group showed faster healing, earlier epithelialization, and earlier pain alleviation. The third study combined Aloe vera with other herbs, which showed better healing ability and restored skin hydration than those with SSD. Conclusion: Each of the three articles stated that Aloe vera was more effective than SSD for treating second-degree burn wounds. Nevertheless, each of the studies lacked methodology and comprehensive data reporting.

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