• The Korean Journal of Physiology and Pharmacology
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• v.12 no.6
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• pp.343-347
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• 2008

This study was carried out to investigate the wound healing effect of caffeic acid in skin-incised mice. Caffeic acid showed significant effects on anti-inflammatory activity and wound healing, such as myeloperoxidase activity, lipid peroxidation, phospholipase $A_2$ activity and collagen-like polymer synthesis, in incised-wound tissue. On the other hand, it significantly stimulated collagen-like polymer synthesis in NIH 3T3 fibroblast cells, while inhibited both silica-induced reactive oxygen species generation and melittin-induced arachidonic acid release and $PGE_2$ production in Raw 264.7 cells, and histamine release in RBL 2H3 cells stimulated by melittin or arachidonic acid. Therefore, caffeic acid appears to have a potent antioxidant and anti-inflammatory effect in cell culture system, which may be related to wound healing in skin-incised mice.

• YAKHAK HOEJI
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• v.34 no.6
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• pp.407-414
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• 1990

The relationships of inhibitory activities of inflammation and wound healing of flavonoids were studied in vitro and in vivo. Generally flavonoids have not only significantly anti-inflammatory activity in carrageenin-induced paw edema and Freund's complete adjuvant-induced arthritis, but also inhibitory activity of wound healing. The more inhibitory activities of wound healing flavonoids have, the more they have the anti-inflammatory activities; apigenin > guercetin > flovone > rutin > hesperidin > naringin. Their inhibitory mechanism seems to be inhibition of the inflammatory cell infiltration and fibroblast proliferation, and so they decreased the granulomatous activity and tensile strength.

• Journal of Veterinary Clinics
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• v.9 no.1
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• pp.277-281
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• 1992

To investigate the effect of chlorhexidine gluconate and povidone iodine on wound healing, their antimicrobial activity and their effects on wound contraction in rabbits were studied. Staphyococcus aureus (1${\times}$10$\^$7/) was inoculated on the full thickness skin defects (2${\times}$2cm) on the back. Antiseptics were applied on the defects 2 hours after Inoculation. The defects were swabbed for bacterial culture 24 and 48 hours after the application of antiseptics. Percentage of wound contraction, based on wound area measured on the day of surgery was calculated for each wound on days 1,7 and 14. The 0.5% chlorhexidine gluconate solution had more effective antimicrobial activity against Staphyococcus aureus in wounds than 0.05% chlorhexidine gluconate solution (p<0.05), and povidone iodine solution and saline (p<0.01). Percentages of wound contraction were not significantly different among different dilutions of the antiseptics and saline. Present study indicated that the antimicrobial activity of chlorhexidine gluconate in wound was superior to that of povidone iodine.

• CELLMED
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• v.2 no.3
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• pp.23.1-23.7
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• 2012

The healing properties of medicinal maggots (larval stage of Lucilia sericata) are widely used in the chirurgical debridement of non-healing wounds including diabetic foot ulcers, venous and pressure ulcers, where classical approaches have failed. Several kinds of wounds are prone to complications coming out of a specific wound bed environment. There are multi-resistant bacterial species present, their pathogenic impact is multiplied by their ability to form a biofilm. Moreover, immunological events in chronic wounds differ from those in acute wounds. Non-healing wounds are cycled in the early inflammation phase with increased levels of inflammation attributes like inflammation cytokines and matrix metalloproteinases produced by inflammation phase cells. Application of larval therapy promotes progress in the healing process to the next stages involving tissue granulation and re-epithelisation. Larval debridement is an effective method of cleaning the wound of cell debris, necrotic tissue and bacterial load. This happens in a mechanical and biological manner, but the whole complex mechanism of the maggot healing activity is still not fully elucidated. Centuries of clinical practice brings noticeable proof of the maggots' beneficial effect in wound healing management. This long history led to the investigation of the bioactive components of the larval body and its extracts in vitro. We introduce a review which describes the immunomodulation impact of maggot body components on the cellular and molecular levels of the wound healing process.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.22 no.2
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• pp.161-166
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• 1996

Ginseng has been used as miraculous panacea since ancient times in oriental countries. In spite of voluminous work, ginseng still remains mysterious herb, but its value is becoming more recognized in the pharmaceutical and cosmetic fields. In this study, we investigated the effect of Panax ginseng on wound healing using two experimental methods. First, we studied the effect of ginseng on artificial wound of cultured human keratinocyte monolayer. Indivisual components from ginseng (ginsenoside Rb2, Rc, Re, Rg1, and panasenoside) and giseng extrats were examined. Of them, compared with control, ginsenoside Rb2 and Rg1 needed much shorter time to recover original appearance of momolayer. Second, we investigated the effect of ginseng on acute injury on dorsal skin of hairless mice. We here observed that ginseng has prominent effect than Madecasol(asiaticoside), a well known wound healing agent. These results were deduced that ginseng promoted wound healing in the wound region due to its stimulation of biosynthesis of various endogeneous materials that have relation to wound healing. Furthermore, we conformed that ginsenoside Rg1 exhibited anti-inflammatory activity on rat paw edema induced by carageenan. These results suggest that Panax ginseng C.A Meyer can be used in the cosmetics in that its wound healing and anti-inflammatory effects.

• Journal of Microbiology and Biotechnology
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• v.17 no.10
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• pp.1661-1669
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• 2007

Gamma-aminobutyric acid (GABA) is a non-protein amino acid. It is well known for its role as an inhibitory neurotransmitter of developing and operating nervous systems in brains. In this study, a novel function of GABA in the healing process of cutaneous wounds was presented regarding anti-inflammation and fibroblast cell proliferation. The cell proliferation activity of GABA was verified through an MTT assay using murine fibroblast NIH3T3 cells. It was observed that GABA significantly inhibited the mRNA expression of iNOS, IL-$1{\beta}$, and TNF-${\alpha}$ in LPS-stimulated RAW 264.7 cells. To evaluate in vivo activity of GABA in wound healing, excisional open wounds were made on the dorsal sides of Sprague-Dawley rats under anesthesia, and the healing of the wounds was apparently assessed. The molecular aspects of the healing process were also investigated by hematoxylineosin staining of the healed skin, displaying the degrees of re-epithelialization and linear alignment of the granulation tissue, and immunostaining and RT-PCR analyses of fibroblast growth factor and platelet-derived growth factor, implying extracellular matrix synthesis and remodeling of the skin. The GABA treatment was effective to accelerate the healing process by suppressing inflammation and stimulating re-epithelialization, compared with the epidermal growth factor treatment. The healing effect of GABA was remarkable at the early stage of wound healing, which resulted in significant reduction of the whole healing period.

• Archives of Plastic Surgery
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• v.38 no.4
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• pp.345-350
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• 2011

Purpose: Although platelet-rich plasma (PRP) potentiate the wound healing activity of adipose-derived stem cells (ADSCs), its effect cannot be sustained for a prolonged period of time due to short duration of action. This led us to design and produce platelet-rich fibrin (PRF), in an effort to develop a tool which lasts longer, and apply it on wound healing. Methods: Two symmetrical skin defects were made on the back of seven nude mice. ADSCs were applied to each wound, combined with either PRP or PRF. The wound area was measured over 14 days. By day 16, the wound was harvested and histologic analysis was performed including counting of the blood vessel. Results: The healing rate was more accelerated in PRP group in the first 5 days (p<0.05). However, PRF group surpassed PRP group after 6 days (p<0.05). The average number of blood vessels observed in the PRF group was $6.53{\pm}0.51$, compared with $5.68{\pm}0.71$ for the PRP group. Conclusion: PRF exerts a slow yet pervasive influence over the two-week course of the wound healing process. Thus, PRF is probably more beneficial for promoting the activity of ADSCs for a sustained period of time.

• Archives of Pharmacal Research
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• v.21 no.5
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• pp.487-495
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• 1998

Gorwth factors such as TGF-beta, PDGF and FGF are thought to play important roles in wound healing. However, thier biological activity and signal transduction during wound repair remain poorly understood. Growth factors are often ligands for receptor tyrosine kinase and receptor serine/threonine kinases. With recent advances in signal transduction by receptor kinases, we are beginning to understand the underlying mechanism of how growth factors may regulate cutaneous wound repair. In this paper, we will describe the pharmacological effects of growth factors on wound healing, and dscuss the potential underlying signaing mechanisms. thus, we hope to provide the basis for designing more specific therapeutics for wound healing in the near future.

• Journal of the Korean Applied Science and Technology
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• v.33 no.4
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• pp.788-794
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• 2016

Vinca alkaloids from plant Vinca minor have been investigated for their effects of tyrosinase inhibition, stimulation of ROS generation and increasement of cell migration activity. The methanolic crude extract and the water-soluble fraction exhibited $IC_{50}$ value of 3.1 mg/mL and 2.1 mg/mL. Vinca minor extract treatment significantly increased ROS levels in HaCaT cells, in a concentration-dependent manner. Treatments of Vinca minor extract led to increase wound closure when compared with non-treatment. Low dose (0.1% or 0.3%) of extracts have not significantly affected, compared with that in controls. By contrast, 0.5% extract have dramatic effect on wound healing activity of keratinocytes. Effects of Vinca minor extract in a filter-based cell mobility assay appear similar to that of wound closure assay, which suggests that the Vinca minor extract have wound healing effects on skin.

• Archives of Plastic Surgery
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• v.34 no.2
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• pp.156-162
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• 2007

Purpose: In the previous in vitro studies the bone marrow stromal cells(BSCs) have shown the superior effect for wound healing activity than fibroblasts, which includes cell proliferation, type I collagen synthesis, and the production of bFGF, VEGF and TGF-${\beta}$ in chronic wound healing. The aim of this study is to compare the effects of BSCs and fibroblasts on wound healing activity in vivo, especially on collagen synthesis. Methods: The fibroblasts and BSCs were harvested from patients and cultured. The cultured cells were infiltrated into the pores of polyethylene discs. These discs were divided into three groups according to the mixed cells. In groups I, II and III the discs were loaded with no cells, fibroblasts and BSCs, respectively. Twelve discs per group(total 36 discs) were made for this study. After creating 6 pockets in the back of each rats, each discs was implanted into each pockets. At three time intervals from 1 to 3 weeks, the implanted discs were harvested for the histological and quantitative analysis. The amount of collagen produced was evaluated using ELISA. Statistical comparisons were made using the Mann-Whitney U-test. Results: There was great difference in the collagen synthesis among the three groups by the 1st and 2nd weeks. The BSC group showed highest collagen level, followed by fibroblast group and no cell group(p<0.05). The 3rd week specimens also showed greater collagen amount in BSC and fibroblast groups compared to those of no cell group(p<0.05). However, there was little difference between BSC and fibroblast groups. Conclusion: This result demonstrates that BSC has superior effect on stimulating wound healing than fibroblast, which is currently used for wound healing.