Design, fabrication, and optimization of a dual function three-layer scaffold for controlled release of metformin hydrochloride to alleviate fibrosis and accelerate wound healing

2020 ◽  
Vol 113 ◽  
pp. 144-163
Author(s):  
Faraz Chogan ◽  
Tahereh Mirmajidi ◽  
Ali Hossein Rezayan ◽  
Ali Mohammad Sharifi ◽  
Aziz Ghahary ◽  
...  
Keyword(s):  
Wound Healing ◽  
Controlled Release ◽  
Metformin Hydrochloride ◽  
Dual Function ◽  
Accelerate Wound Healing

Sprayed copper peroxide nanodots for accelerating wound healing in a multidrug-resistant bacteria infected diabetic ulcer

Nanoscale ◽  
2021 ◽  
Vol 13 (37) ◽  
pp. 15937-15951
Author(s):  
Ran Zhang ◽  
Guhua Jiang ◽  
Qianqian Gao ◽  
Xiaona Wang ◽  
Yilin Wang ◽  
...  
Keyword(s):  
Wound Healing ◽  
Multidrug Resistant ◽  
Resistant Bacteria ◽  
Dual Function ◽  
Acidic Environment ◽  
Multidrug Resistant Bacteria ◽  
Diabetic Ulcer ◽  
Diabetic Ulcers ◽  
Accelerate Wound Healing ◽  
Copper Peroxide

Attributed to the dual function of antimicrobial and angiogenesis, sprayed CuO2 nanodots accelerate wound healing in diabetic ulcers with an acidic environment.

Controlled Release of Metformin Hydrochloride I. In vitro Release from Physical Mixture Containing Xanthan Gum as Hydrophilic Rate Retarding Polymer

1970 ◽  
Vol 4 (1) ◽  
Author(s):  
Mashkura Ashrafi ◽  
Jakir Ahmed Chowdhury ◽  
Md Selim Reza
Keyword(s):  
Controlled Release ◽  
Xanthan Gum ◽  
In Vitro Release ◽  
Correlation Coefficients ◽  
High Ratio ◽  
Water Soluble ◽  
Metformin Hydrochloride ◽  
Model Drug ◽  
Very High

Capsules of different formulations were prepared by using a hydrophilic polymer, xanthan gum and a filler Ludipress. Metformin hydrochloride, which is an anti-diabetic agent, was used as a model drug here with the aim to formulate sustained release capsules. In the first 6 formulations, metformin hydrochloride and xanthan gum were used in different ratio. Later, Ludipress was added to the formulations in a percentage of 8% to 41%. The total procedure was carried out by physical mixing of the ingredients and filling in capsule shells of size ‘1’. As metformin hydrochloride is a highly water soluble drug, the dissolution test was done in 250 ml distilled water in a thermal shaker (Memmert) with a shaking speed of 50 rpm at 370C &plusmn 0.50C for 6 hours. After the dissolution, the data were treated with different kinetic models. The results found from the graphs and data show that the formulations follow the Higuchian release pattern as they showed correlation coefficients greater than 0.99 and the sustaining effect of the formulations was very high when the xanthan gum was used in a very high ratio with the drug. It was also investigated that the Ludipress extended the sustaining effect of the formulation to some extent. But after a certain period, Ludipress did not show any significant effect as the pores made by the xanthan gum network were already blocked. It is found here that when the metformin hydrochloride and the xanthan gum ratio was 1:1, showed a high percentage of drug release, i.e. 91.80% of drug was released after 6 hours. But With a xanthan gum and metformin hydrochloride ratio of 6:1, a very slow release of the drug was obtained. Only 66.68% of the drug was released after 6 hours. The percent loading in this case was 14%. Again, when Ludipress was used in high ratio, it was found to retard the release rate more prominently. Key words: Metformin Hydrochloride, Xanthan Gum, Controlled release capsule Dhaka Univ. J. Pharm. Sci. Vol.4(1) 2005 The full text is of this article is available at the Dhaka Univ. J. Pharm. Sci. website

Phytotherapy for wound healing: The most important herbal plants in wound healing based on Iranian etnobotanical documents

2020 ◽  
Vol 20 ◽  
Author(s):  
Kamal Solati ◽  
Mehrdad Karimi ◽  
Mahmoud Rafieian-Kopaei ◽  
Naser Abbasi ◽  
Saber Abbaszadeh ◽  
...  
Keyword(s):  
Wound Healing ◽  
Medicinal Plants ◽  
Aloe Vera ◽  
Datura Stramonium ◽  
New Drugs ◽  
Mentha Pulegium ◽  
Accelerate Wound Healing ◽  
Healing Tissue ◽  
Herbal Plants ◽  
Echium Amoenum

: Wound healing is a process which starts with inflammatory response after damage occurrence. This process happens by restoring the wound surface coating tissue, migrating fibroblasts to form the needed collagen, forming a healing tissue and finally contortion and extraction of the wound. Today, various drugs are used to heal the wound. However, the used drugs to repair wounds have some defects and side effects. In spite of all attempts to accelerate wound healing definitely, no safe drug has been introduced for this purpose. Therefore, the necessity of identifying herbal plants in ethnopharmacology and ethnobotany documents with healing effect is felt essential. In this article we tried to review and present Iranian effective medicinal plants and herbal compounds used for wound healing. Searching was performed on databases including ISI Web of Science, PubMed, PubMed Central, Scopus, ISC, SID, Magiran and some other databases. The keywords used included wound healing, skin treatment, medicinal plants, ethnobotany, and phytotherapy. In this regard, 139 effective medicinal plants on wound healing were identified based on ethnopharmacology and ethnobotanical sources of Iran. Medicinal plants such as Salvia officinalis, Echium amoenum, Verbascum spp., G1ycyrrhiza glabra, Medicago sativa, Mentha pulegium, Datura stramonium L., Alhagi spp., Aloe vera, Hypericum perforatum, Pistacia atlantica and Prosopis cineraria were the most important and effective medicinal plants on wound healing in Iran. These native Iranian medicinal plants are full of antioxidants and biological compounds and might be used for wound healing and preparation of new drugs.

Controlled release of KGF-2 for regulation of wound healing by KGF-2 complexed with “lotus seedpod surface-like” porous microsphere

2021 ◽  
Author(s):  
Hao Pan ◽  
Changcan Shi ◽  
Rongshuai Yang ◽  
Guanghui Xi ◽  
Chao Lu ◽  
...  
Keyword(s):  
Wound Healing ◽  
Controlled Release ◽  
Growth Factor ◽  
Normal Tissue ◽  
Keratinocyte Growth Factor ◽  
Tissue Structure ◽  
Effective Strategy ◽  
Proliferation And Differentiation ◽  
Porous Microsphere ◽  
Lotus Seedpod

Keratinocyte growth factor-2 (KGF-2) plays a remarkable role in maintaining normal tissue structure and promoting wound healing by regulation the proliferation and differentiation of keratinocyte. As an effective strategy, KGF-2...

scholarly journals Formulation and development of metformin-loaded microspheres using Khaya senegalensis (Meliaceae) gum as co-polymer

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Chukwuebuka H. Ozoude ◽  
Chukwuemeka P. Azubuike ◽  
Modupe O. Ologunagba ◽  
Sejoro S. Tonuewa ◽  
Cecilia I. Igwilo
Keyword(s):  
Controlled Release ◽  
Sodium Alginate ◽  
Release Kinetics ◽  
Drug Carrier ◽  
In Vitro Release ◽  
Entrapment Efficiency ◽  
Metformin Hydrochloride ◽  
Scanning Calorimetry ◽  
Khaya Senegalensis

Abstract Background Khaya gum is a bark exudate from Khaya senegalensis (Maliaecae) that has drug carrier potential. This study aimed to formulate and comparatively evaluate metformin-loaded microspheres using blends of khaya gum and sodium alginate. Khaya gum was extracted and subjected to preformulation studies using established protocols while three formulations (FA; FB and FC) of metformin (1% w/v)-loaded microspheres were prepared by the ionic gelation method using 5% zinc chloride solution as the cross-linker. The formulations contained 2% w/v blends of khaya gum and sodium alginate in the ratios of 2:3, 9:11, and 1:1, respectively. The microspheres were evaluated by scanning electron microscopy, Fourier transform-infrared spectroscopy, differential scanning calorimetry, entrapment efficiency, swelling index, and in vitro release studies. Results Yield of 28.48%, pH of 4.00 ± 0.05, moisture content (14.59% ± 0.50), and fair flow properties (Carr’s index 23.68 ± 1.91 and Hausner’s ratio 1.31 ± 0.03) of the khaya gum were obtained. FTIR analyses showed no significant interaction between pure metformin hydrochloride with excipients. Discrete spherical microspheres with sizes ranging from 1200 to 1420 μm were obtained. Drug entrapment efficiency of the microspheres ranged from 65.6 to 81.5%. The release of the drug from microspheres was sustained for the 9 h of the study as the cumulative release was 62% (FA), 73% (FB), and 80% (FC). The release kinetics followed Korsmeyer-Peppas model with super case-II transport mechanism. Conclusion Blends of Khaya senegalensis gum and sodium alginate are promising polymer combination for the preparation of controlled-release formulations. The blend of the khaya gum and sodium alginate produced microspheres with controlled release properties. However, the formulation containing 2:3 ratio of khaya gum and sodium alginate respectively produced microspheres with comparable controlled release profiles to the commercial brand metformin tablet.

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