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Introduction and aim Diabetic foot ulcer (DFU) is a chronic condition that affects an increasing number of people each year[1]. Healing the ulceration requires cooperation between patients, specialists and scientists in order to achieve satisfactory results. Treating this type of wound is not only a therapeutic challenge[1,2,3,4,5,6], but also an economic one, which is why so much scientific research has already been made on this phenomenon[2,3]. Still scientists continue their quest for new cost-effective alternatives to current therapeutic options that would be consistent with contemporary knowledge and available engineering capabilities in pursuance of creating techniques and new dressings that will accelerate the healing of DFUs[2,3,7,8]. Factors such as stress, obesity, certain medications, and chronic diseases appear to negatively affect the process of repair [1,9,10,4,6,11]. Studies prove that aloe vera gel due to its healing properties, can be considered as a potential dressing that will expedite the mending process of diabetic foot ulceration[12,13,14]. In this paper, we performed a literature review of the applicability of aloe vera in the healing process of DFUs. Materials and methods Searching the available literature, including randomized clinical trials and systematic reviews, we drew on databases focusing on the effects of treatment for diabetic foot ulceration using Aloe vera. Conclusion: The current scientific research on the use of Aloe vera gel in diabetic foot ulcer treatment indicates that this method is safe, effective and inexpensive[2,3]. However the difficulty of treatment and the increasing prevalence of this type of wound pose a challenge to finding new solutions and exploring mechanisms in which aloe vera can have a possible role in the wound healing process. Nevertheless, this paper presents a promising impact of Aloe vera gel applicability in the healing process of diabetic foot ulcer. [ABSTRACT FROM AUTHOR]

Introduction and aim Diabetic foot ulcer (DFU) is a chronic condition that affects an increasing number of people each year[1]. Healing the ulceration requires cooperation between patients, specialists and scientists in order to achieve satisfactory results. Treating this type of wound is not only a therapeutic challenge[1,2,3,4,5,6], but also an economic one, which is why so much scientific research has already been made on this phenomenon[2,3]. Still scientists continue their quest for new cost-effective alternatives to current therapeutic options that would be consistent with contemporary knowledge and available engineering capabilities in pursuance of creating techniques and new dressings that will accelerate the healing of DFUs[2,3,7,8]. Factors such as stress, obesity, certain medications, and chronic diseases appear to negatively affect the process of repair [1,9,10,4,6,11]. Studies prove that aloe vera gel due to its healing properties, can be considered as a potential dressing that will expedite the mending process of diabetic foot ulceration[12,13,14]. In this paper, we performed a literature review of the applicability of aloe vera in the healing process of DFUs. Materials and methods Searching the available literature, including randomized clinical trials and systematic reviews, we drew on databases focusing on the effects of treatment for diabetic foot ulceration using Aloe vera. Conclusion: The current scientific research on the use of Aloe vera gel in diabetic foot ulcer treatment indicates that this method is safe, effective and inexpensive[2,3]. However the difficulty of treatment and the increasing prevalence of this type of wound pose a challenge to finding new solutions and exploring mechanisms in which aloe vera can have a possible role in the wound healing process. Nevertheless, this paper presents a promising impact of Aloe vera gel applicability in the healing process of diabetic foot ulcer.

Combining natural polysaccharides with synthetic materials improves their functional properties which are essential for designing sustained-release drug delivery systems. In this context, the Aloe vera leaf mucilage/hydrogel (ALH) was reacted with acrylic acid (AA) to synthesize a copolymerized hydrogel, i.e., ALH-grafted-Polyacrylic acid (ALH-g-PAA) through free radical copolymerization. Concentrations of the crosslinker N,N′ -methylene-bis-acrylamide (MBA), and the initiator potassium persulfate (KPS) were optimized to study their effects on ALH-g-PAA swelling. The FTIR and solid-state NMR (CP/MAS 13C NMR) spectra witnessed the formation of ALH-g-PAA. Scanning electron microscopy (SEM) analysis revealed superporous nature of ALH-g-PAA. The gel fraction (%) of ALH-g-PAA was directly related to the concentrations of AA and MBA whereas the sol fraction was inversely related to the concentrations of AA and MBA. The porosity (%) of ALH-g-PAA directly depends on the concentration of AA and MBA. The ALH-g-PAA swelled admirably at pH 7.4 and insignificantly at pH 1.2. The ALH-g-PAA offered on/off switching properties at pH 7.4/1.2. The metoprolol tartrate was loaded on different formulations of ALH-g-PAA. The ALH-g-PAA showed pH, time, and swelling-dependent release of metoprolol tartrate (MT) for 24 h following the first-order kinetic and Korsmeyer-Peppas model. Haemocompatibility studies ascertained the non-thrombogenic and non-hemolytic behavior of ALH-g-PAA. [Display omitted] • Synthesis of Aloe vera mucilage-based hydrogel by free radical polymerization • Copolymeric hydrogel appears a superporous and stimuli-responsive material • Hydrogel exhibits on-off switching at pH 7.4 and 1.2, respectively • The synthesized hydrogel shows pH-dependent swelling and drug release • Hydrogel exhibited non-hemolytic and non-thrombogenic potential [ABSTRACT FROM AUTHOR]

Herein, the hydrogel from the leaf of the Aloe vera plant (ALH) was succinylated (SALH) and saponified (NaSALH). The FTIR, solid-state CP/MAS 13C NMR, and SEM-EDX spectroscopic analyses witnessed the formation of SALH and NaSALH from ALH. The pH ZPC for NaSALH was found to be 4.90, indicating the presence of −ve charge on its surface. The Cd2+ sorption efficiency of NaSALH was found to be dependent on pH, NaALH dose, Cd2+ concentration, contact time, and temperature. The maximum Cd2+ removal from DW and HGW was found to be 227.27 and 212.77 mg g−1 according to the Langmuir isothermal model (>0.99) at pH of 6, NaSALH dose of 40 mg g−1, Cd2+ concentration of 90 mg L−1, contact time of 30 min, and temperature of 298 K. The kinetic analysis of Cd2+ sorption data witnessed that the Cd2+ removal by chemisorption mechanism and followed pseudo-second-order kinetics (>0.99). The −ve values of ΔG° and ΔH° assessed the spontaneous and exothermic nature of sorption of Cd2+ by NaSALH. The regeneration and sorption/desorption studies indicated that the sorbent NaSALH is regenerable. • Isolation of mucilage from Aloe vera • Synthesis of sodium salt of succinate bonded A. vera hydrogel (NaSALH). • Evaluation of cadmium removal capacity of NaSALH from DW and HGW • Cd2+ sorption data fitted well to Langmuir isotherm, pseudo second-order kinetics, and ion-exchange models. • NaSALH appeared supersorbent and regenerable. [ABSTRACT FROM AUTHOR]

Viscoelastic properties for reconstitutedA. verahydrogels were evaluated in different ranges of concentration (0.2–1.6%, w/v) and temperature (30–60°C). The storage (G′) and loss (G″) moduli were well described by power function of the frequency (R2> 0.92). The combined effect of concentration and temperature was optimized for reconstituted gel formation, targeting maximum viscoelastic moduli (G0′ andG′′0) and minimum slope (n′ andn″) values using response surface methodology. The optimum condition selected was 1.6%, w/v at 30°C having higher gel strength [G′0(47.8 Pa.sn′) andG″0(27.4 Pa.sn′)], as well as minimum slope values [n′ (0.24) andn″ (0.08)]. Further, the effect of initial aging time on the viscoelastic moduli of optimized sample (1.6%, w/v at 30 ± 1°C) was noticed by fitting the intermediate creep ringing data to rheological models. The viscoelastic moduli (G′JandG′K) increased with aging time (0–180 min) for optimizedA. verahydrogel, as confirmed by Jeffrey’s and Kelvin-Voigt models. The obtained results suggested that optimized conditions for reconstitutedA. veragel formation could be useful to improve the gel strength which could be useful for various food applications. [ABSTRACT FROM AUTHOR]