scholarly journals Gelatin-Alginate Coacervates Optimized by DOE to Improve Delivery of bFGF for Wound Healing

Pharmaceutics ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2112
Author(s):  
ByungWook Kim ◽  
Eunmi Ban ◽  
Aeri Kim
Keyword(s):  
Wound Healing ◽  
Metabolic Disorders ◽  
Dermal Fibroblasts ◽  
Therapeutic Modality ◽  
Diabetic Patients ◽  
Tissue Formation ◽  
Granulation Tissue Formation ◽  
Independent Variables ◽  
Healing Wounds ◽  
Polymer Ratio

Metabolic disorders in diabetic patients are associated with altered protein and lipid metabolism and defects in granulation tissue formation, resulting in non-healing wounds such as diabetic foot ulcers (DFU). Growth factors have essential roles in tissue re-epithelization and angiogenesis during wound healing. In this study, a complex coacervate was evaluated as an enhanced delivery system for fibroblast growth factor (bFGF) to control its release rate and protect it from proteases. Coacervates composed of gelatin Type A (GA) and sodium alginate (SA) were optimized by the Design of Experiments (DOE), with the polymer ratio and the medium’s pH as the independent variables, and turbidity, particle size, polydispersity index, and encapsulation efficiency (EE, %) as the responses. The optimized coacervate protected bFGF from trypsin digestion and showed controlled release compared with bFGF in solution or a physical mixture of GA and SA. It enhanced the viability, migration, and procollagen I C-terminal propeptide synthesis of human dermal fibroblasts in hyperglycemic conditions. In summary, the DOE approach was successfully applied to optimize bFGF GA-SA coacervates as a potential novel therapeutic modality to treat DFU.

The Effect of a Hydrocolloid Dressing on Second Intention Wound Healing in Cats

2018 ◽  
Vol 54 (3) ◽  
pp. 125-131 ◽  
Author(s):  
Vassiliki Tsioli ◽  
Pagona G. Gouletsou ◽  
Apostolos D. Galatos ◽  
Dimitra Psalla ◽  
Antonios Lymperis ◽  
...  
Keyword(s):  
Wound Healing ◽  
Clinical Evaluation ◽  
The Other ◽  
Skin Wounds ◽  
Tissue Formation ◽  
Dorsal Midline ◽  
Granulation Tissue Formation ◽  
Hydrocolloid Dressing ◽  
Thickness Skin ◽  
The Right

ABSTRACT The objective of the present study was to evaluate the effect of a hydrocolloid dressing on second intention wound healing in cats. Two full-thickness skin wounds, measuring 2 × 2 cm, were created on both sides of the dorsal midline of 10 cats; bilaterally, one randomly selected wound was bandaged with a hydrocolloid dressing and the second one (control) with a semiocclusive pad. Subjective clinical evaluation of granulation tissue formation, of the quantity and nature of wound exudate, and planimetry were performed on the right-side wounds, and histological examination on the left. No significant differences in subjective clinical evaluation or in planimetry were observed between the hydrocolloid-treated wounds and controls. Most wounds had serous or absence of exudate (41.25% and 25%, respectively), whereas purulent exudate was observed in 7.5% of wounds. Edema was significantly increased in the hydrocolloid-treated wounds compared with controls on day 7 but no significant differences in the other histological variables were observed.

scholarly journals Effectivity of topical mangosteen pericarp extract cream on wound healing in Swiss albino mice

2019 ◽  
Vol 92 (2) ◽  
Author(s):  
Hilda Brigitta Sombolayuk ◽  
Khairuddin Djawad ◽  
Siswanto Wahab ◽  
Upik A. Miskad ◽  
Gemini Alam ◽  
...  
Keyword(s):  
Wound Healing ◽  
Granulation Tissue ◽  
Inflammatory Cells ◽  
Control Group ◽  
Tissue Formation ◽  
Granulation Tissue Formation ◽  
Swiss Albino Mice ◽  
Accelerate Wound Healing ◽  
Acute Wound ◽  
Albino Mice

Wound healing is a complex physiological process consisting of four phases: coagulation, inflammation, proliferation and migration, and remodeling, each with distinct characteristics. Studies have suggested that mangosteen pericarp extract (MPE) may accelerate wound healing. However, the mechanism has not been fully understood. This study aims to evaluate the effect of MPE cream in various concentrations in acute wound healing of albino mice, both histologically and macroscopically. Thirty-two healthy female Swiss albino mice, aged 6-9 weeks, weight 20-30 g, were included in this study. The samples were randomly divided into eight groups each consisting of 4 mice. The first four groups were treated with MPE cream 5%, 10%, and 20%, and no medication (control group), respectively, and were sacrificed after three days. The other four groups received the same application and were sacrificed after 8 days. Wound bed diameter was measured and biopsy from the skin lesion was performed for histopathologic examination. Mann-Whitney test was used to analyze the diameter of the wound bed and histopathological findings of granulation tissue formation, reepithelialization, and inflammation, with P<0.05 considered as significant. MPE cream significantly improved wound healing by increasing granulation tissue formation, and reepithelialization. In addition, MPE cream application was also shown to decrease the number of inflammatory cells, particularly in 5% and 10% concentrations, both in the 3-day and 8-day groups. MPE cream application can accelerate wound healing and thus can be used in acute wound treatment.

Biomimetic thermoplastic polyurethane porous membrane with hierarchical structure accelerates wound healing by enhancing granulation tissue formation and angiogenesis

RSC Advances ◽  
2016 ◽  
Vol 6 (101) ◽  
pp. 99595-99603 ◽  
Author(s):  
Qiang Lei ◽  
Zhichao Li ◽  
Rui Xu ◽  
Yuzhen Wang ◽  
Haisheng Li ◽  
...  
Keyword(s):  
Wound Healing ◽  
Hierarchical Structure ◽  
Granulation Tissue ◽  
Wound Dressing ◽  
Thermoplastic Polyurethane ◽  
Porous Membrane ◽  
Tissue Formation ◽  
Granulation Tissue Formation

Wound dressing with hierarchical structure enhances wound healing.

scholarly journals RapidlyIn SituForming Platelet-Rich Plasma Gel Enhances Angiogenic Responses and Augments Early Wound Healing after Open Abdomen

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Bo Zhou ◽  
Jianan Ren ◽  
Chao Ding ◽  
Yin Wu ◽  
Dong Hu ◽  
...  
Keyword(s):  
Wound Healing ◽  
Growth Factor ◽  
Granulation Tissue ◽  
Open Abdomen ◽  
Transforming Growth Factor ◽  
Platelet Rich Plasma ◽  
Tissue Formation ◽  
Granulation Tissue Formation ◽  
Abdominal Hypertension ◽  
Early Wound

Objective.The purposes of our present study were to evaluate the potential of platelet-rich plasma gel to enhance granulation tissue formation after open abdomen and to examine whether the effect was attributable to stimulating rapid neovascularization.Methods.Twenty-four rats underwent colon ascendens stent peritonitis surgery to induce sepsis, followed by intraperitoneal injection of nitrogen to create intra-abdominal hypertension. Four hours later, laparotomies were performed. The rats were randomized into three groups (n=8for each group): control, platelet-poor plasma (PPP), and platelet-rich plasma (PRP) groups. One week after the treatment, granulation tissue formation and angiogenesis were evaluated by histological and laser Doppler analysis.Results.The resultant platelet count in platelet-rich plasma was higher than that of PPP. The concentrations of platelet-derived growth factor BB, transforming growth factorβ-1, and vascular endothelial growth factor in PRP were significantly higher when compared with that of PPP. Myofibroblast count, granulation tissue thickness, vessel numbers, and blood perfusion were increased in PRP group, followed by PPP group, with control being the least.Conclusion.Rapidlyin situforming platelet-rich plasma gel promoted remarkable neovascularization and early wound healing after open abdomen and may lead to novel and effective treatments for open abdominal wounds.

scholarly journals Effect of Newly Synthesized Polypropylene/Silver Nonwoven Fabric Dressing on Incisional Wound Healing in Rats

2014 ◽  
Vol 2 (3) ◽  
pp. 395-403 ◽  
Author(s):  
Samiha M. Gawish ◽  
Amina A. Gamal El Din ◽  
Hanaa H. Ahmed ◽  
Abdel Razik H. Farrag ◽  
Amira Abou-El Kheir
Keyword(s):  
Wound Healing ◽  
Granulation Tissue ◽  
Nonwoven Fabric ◽  
Complete Healing ◽  
Albino Rats ◽  
Tissue Formation ◽  
Histopathological Changes ◽  
Granulation Tissue Formation ◽  
Wound Length ◽  
Incision Wound

AIM: The present work aimed to investigate the effect of the antimicrobial nano Ag/polypropylene (PP\Ag) dressing on incisional wound healing on the experimental level.MATERIALS AND METHODS: Male albino rats were divided into, control, PP/Ag dressing, Silver Sulfadiazine (Ag-SD) cream, blank PP dressing and undressed groups. Animals were sacrificed after 5, 10 and 15 days of incisional wound event.RESULTS: Reduction was found in incision wound length in PP/Ag dressed rats, Ag-SD cream treated rats, and blank PP dressed rats after 5, 10 and 15 days compared to undressed rats. Skin of PP/Ag group showed less adverse histopathological changes, enhanced granulation tissue formation, enhanced angiogenesis, accelerated re-epithelialization and quick complete healing; compared to all other groups. Significant decrease in TGF-β level was recorded in PP\Ag and Ag-SD cream groups as compared to blank PP group on day 5. While, significant decrease in TGF-β level was detected in PP\Ag group when compared with undressed and blank PP groups on day 10. TGF-β showed significant in PP\Ag group as compared to undressed, Ag-SD cream and blank PP groups on day 15. CONCLUSION: The present results suggest that PP/Ag dressing enhances, promotes and plays an important role in wound healing.

scholarly journals Manfaat Olesan Madu Pada Penyembuhan Luka Kulit

2021 ◽  
Vol 8 (2) ◽  
Author(s):  
Arantsa Lomban ◽  
Sonny J. R. Kalangi ◽  
Taufiq F. Pasiak
Keyword(s):  
Wound Healing ◽  
Literature Review ◽  
Wound Care ◽  
Antibacterial Properties ◽  
Review Literature ◽  
Tissue Formation ◽  
Granulation Tissue Formation ◽  
Clinical Observations ◽  
Healing Of Skin Wounds ◽  
Ancient Times

Abstract: The use of honey in wound care has been used since ancient times. Honey has been shown to have antibacterial properties, as well as low pH levels making environmental conditions unfavorable for bacterial growth. Clinical observations from human trials report that honey helps granulation tissue formation, increases epithelialization, and reduces inflammation which affects the acceleration of wound healing. The aims of this study is to determine the effect of honey toward wound healing. This study is in the form of a literature review. Literature is taken from one database, namely PubMed. The keywords used are honey and wound healing. After being selected by inclusion and exclusion criteria, ten literature will be reviewed. Honey gave good results and affected the healing of skin wounds, including several types of honey that were studied in experimental animals and in experimental people. In conclusion, honey has an effect on healing skin wounds.Key words: Honey, wound healing  Abstrak: Penggunaan madu dalam perawatan luka telah digunakan sejak saat zaman kuno. Madu telah terbukti memiliki sifat antibakteri, juga kadar pH rendah membuat kondisi lingkungan yang tidak mendukung untuk pertumbuhan bakteri. Pengamatan klinis dari uji coba pada manusia melaporkan bahwa madu membantu pembentukan jaringan granulasi, meningkatkan epitelisasi, dan mengurangi peradangan yang mempengaruhi percepatan penyembuhan luka. Tujuan penelitian ini untuk mengetahui pengaruh madu terhadap penyembuhan luka. Penelitian ini dalam bentuk literature review. Literatur diambil dari satu database yaitu PubMed. Kata kunci yang digunakan yaitu honey and wound healing. Setelah diseleksi dengan kriteria inklusi dan eksklusi didapatkan sepuluh literatur yang akan direview. Madu memberikan hasil yang baik dan berpengaruh terhadap penyembuhan luka kulit, di antaranya ada beberapa jenis madu yang diteliti pada hewan percobaan maupun pada orang coba. Sebagai simpulan, madu mempunyai pengaruh terhadap penyembuhan luka kulit.Kata kunci: Madu, penyembuhan luka

scholarly journals Healing Effects of Human Amniotic Membrane and Burned Wool on the Second-degree Burn in Rats

2020 ◽  
Vol 9 ◽  
pp. 1759
Author(s):  
Nader Tanideh ◽  
Farideh Keshavarzi ◽  
Aida Hemat Zadeh ◽  
Sajad Daneshi ◽  
Omid Koohi-Hosseinabadi ◽  
...  
Keyword(s):  
Wound Healing ◽  
Amniotic Membrane ◽  
Granulation Tissue ◽  
Male Rats ◽  
Control Group ◽  
Human Amniotic Membrane ◽  
Tissue Formation ◽  
Granulation Tissue Formation ◽  
Degree Burn ◽  
Second Degree

ackground: This study aimed to compare sheep burnt wool and human amniotic membrane (AM) on second-degree burn wound healing in rats. Materials and Methods: Seventy-two adult male rats of Sprague Dawley underwent general anesthesia, and a deep second-degree burn was created on their skin by a hot iron plate. Afterward, human AM, silver sulfadiazine ointment (SSD), and sheep burned wool were used on wound area for burn treatment. On days 7, 14, and 21 of the experiment, the rats were sacrificed, and histopathological assessments were done. Results: Human AM, in comparison with other groups, significantly (P<0.05) showed better improvement in all pathologic variables. Burned wool showed significant improvement compared to the control group on day 7 in the angiogenesis, on day 14 in granulation tissue formation and epithelial formation, and on day 21 in new epithelial formation (P<0.05). Burned wool compared with SSD ointment in granulation tissue formation improved significantly (P<0.05) on days 7 and 14. Also, SSD ointment in comparison with the control group significantly improved (P<0.05) granulation tissue formation and macrophage on day 7. Conclusion: Human AM has a significant effect on the treatment of second-degree burn. Burned wool has a better effect on wound healing than SSD ointment and negative control group without treatment in terms of granulation tissue and epithelium formation. [GMJ.2020;9:e1759]

scholarly journals Combined carbon photon and hydrogel therapy mediates the synergistic repair of full-thickness skin wounds

2020 ◽  
Vol 48 (8) ◽  
pp. 030006052093532
Author(s):  
Fan Yang ◽  
Xiuling Zhou ◽  
Sitong Chen ◽  
Qiuju Li ◽  
Ronghang Li ◽  
...  
Keyword(s):  
Wound Healing ◽  
Light Exposure ◽  
Tissue Formation ◽  
Full Thickness ◽  
Granulation Tissue Formation ◽  
Treatment Groups ◽  
Wound Model ◽  
Thickness Skin ◽  
Treatment Of Wounds ◽  
Photon Exposure

Objective This study investigated the synergistic repair effects of Prontosan hydrogel and carbon photon therapy in a rat full-thickness wound model. Methods The wavelength distribution of the photon source was determined. Dehydration of the Prontosan hydrogel and fibroblast viability were analyzed following exposure to different durations of light exposure at different distances from the source. Indexes of wound healing in a full-thickness rat wound model were then determined in groups ( n = 8 each) subjected to either no treatment, Prontosan treatment only, carbon photon therapy only, or a combination of the two treatments (synergistic group). Results Carbon photon exposure for 15 minutes at a distance of 20 cm from the wound was found to be optimal. Wound healing occurred faster in the synergistic group compared with the control and single-treatment groups. Growth factor secretion, granulation tissue formation, inflammation regulation, collagen deposition, and neovascularization were all higher in the synergistic group. Conclusions Prontosan hydrogel combined with carbon photon therapy may provide an optimal environment for wound healing and serve as a novel physical approach to the treatment of wounds. However, the number of animals included in this study was relatively small and a larger study is required to confirm these findings.

A comparative study of phenytoin dressing versus honey dressing in the treatment of cronic ulcers in tertiary care hospital

2021 ◽  
Vol 19 (1) ◽  
pp. 05-09
Author(s):  
Sandesh M ◽  
Keyword(s):  
Wound Healing ◽  
Granulation Tissue ◽  
Chronic Wounds ◽  
Tertiary Care ◽  
Skin Grafting ◽  
Care Hospital ◽  
Tissue Formation ◽  
Granulation Tissue Formation ◽  
Diabetic Ulcers

Background: Diabetic foot infections are the leading cause of hospitalization morbidity and mortality in diabetics worldwide In India it accounts for 20% of hospitalizations. honey has been investigated to treat ulcers like pressure ulcers, venous ulcers, diabetic ulcers, traumatic wounds and burns. Phenytoin is also now known to promote wound healing and can be an alternative to normal saline specifically in chronic wounds related to diabetes. The present study compares these two modalities in management of diabetic ulcers. Objective: To compare the efficacy of topical phenytoin vs topical honey in chronic diabetic ulcers in terms of rate of wound healing, granulation tissue formation and quality of graft bed for skin grafting. Methods: A comparative prospective study of 50 patients with chronic diabetic ulcers selected based on a predefined criteria divided into two groups: Group A (Phenytoin group) (n=25) and Group B (honey group) (n=25). Final wound area was measured on 30th day. Comparison between the wound size reduction among two groups done at end of 30th day. Outcome was measured in terms of wound reduction, granulation tissue formation and quality of bed for skin grafting between the two groups. Results: This study has shown faster rate of wound healing, better granulation tissue formation and quality graft bed for skin grafting in patients who received topical phenytoin dressing as compared to topical honey dressing.

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