Wound Healing Activity Of Extract Research Articles

Evaluation of wound healing and anti-inflammatory activity of hydro-alcoholic extract and solvent fractions of the leaves of Clerodendrum myricoides (Lamiaceae) in mice.

Wounds significantly affect people's quality of life and the clinical and financial burden of healthcare systems around the world. Many of the current drugs used to treat wounds have problems such as; allergies and drug resistance. Hence, the exploration of new therapeutic agents from natural origin may avert this problem. Clerodendrum myricoides have long been used to treat wounds in Ethiopia. Despite this, nothing has so far been reported about the wound healing and anti-inflammatory activity of C. myricoides. This study aimed to evaluate the wound healing and anti-inflammatory activity of 80% methanol extract and solvent fractions of C. myricoides leaves in mice. Leaves of C. myricoides were extracted using the maceration technique. The extract was formulated as 5% and 10% w/w ointments. The wound healing activity of the extract was evaluated using excision, incision, and burn wound models whereas the healing activities of solvent fractions were evaluated using the excision wound model. A carrageenan-induced paw edema model was used for the anti-inflammatory test. In the dermal toxicity test, 2000 mg/kg of 10% extract was found to be safe. In excision and burn wound models, treatment with 10% and 5% extract showed a significant (p<0.001) wound contraction. Solvent fractions of the extract significantly reduced wound contraction. A significant reduction in periods of epithelialization and favorable histopathology changes were shown by extract ointments. In incision wounds, 10% (p<0.001) and 5% (p<0.01) extracts significantly increase skin-breaking strength. After one hour of treatment, 400 mg/kg (p<0.001) and 200 mg/kg (p<0.05) showed significant reduction in paw edema. Results of this study indicate that 80% methanol extract and the solvent fraction of the leaves of C. myricoides possess wound-healing and anti-inflammatory activity and support traditional claims.

Bioactive potentials of the truffle mushrooms Tirmania nivea, Tirmania pinoyi and Tuber indicum

Background Truffles are ectomycorrhizal wild mushrooms that have ethnomycological importance as a folklore remedy used to treat different skin and eye diseases and they are currently known as expensive food and potential sources of bioactive compounds. Objective This study aims to investigate the in vitro bioactive potential of the ethyl acetate extracts of three truffle species Tirmania nivea, Tirmania pinoyi, and Tuber indicum collected from Egypt, Saudi Arabia, and China. Results and discussion Inhibition of α-glucosidase was investigated as an indication of the antidiabetic potential of extracts. Tuber indicum extract caused 21.7% inhibition at a concentration of 100ppm. On the other hand, inhibition of nitric oxide is evaluated as a key way to regulate inflammation. Tuber indicum extract at a concentration of 100μg/ml achieved the highest inhibition (50.2%) and had the lowest IC50 (86.0±0.09μg/ml) among tested extracts, while Tirmania pinoyi extract achieved the lowest inhibition (21.7%) with the highest IC50 (104.1±0.12μg/ml). Cell migration was used to evaluate the wound healing activity of extracts. Tirmania pinoyi extract at a concentration of 100μg/ml caused 74.71% wound closure followed by 73.43% and 62.38% by Tuber indicum and Tirmania nivea extracts, respectively. Finally, investigating the antiviral potential of extracts against coxsackie virus B3 revealed that Tirmania pinoyi extract showed the highest virucidal effect and pretreatment antiviral activity while Tuber indicum extract achieved the highest post-treatment antiviral activity. Results achieved by these truffles encourage further investigations to be used as functional foods or as sources of bioactive compounds.

Assessment of wound healing activity and safety profile of Amaranthus spinosus extract using incision wound healing model

The objective of the study was to determine efficacy of Amaranthus spinosus extract against inflammation and wound along with assessment of safety profile of drug upon topical application. The collected whole plant was extracted with ethanol (65 %). In vitro efficacy of extract was performed on HaCaT and MEF cells. Clonogenic and scratch assays were carried out to determine the wound healing activity of the extract. Acute oral and dermal toxicity studies were conducted in accordance with OECD recommendations in order to assess the drug's profile for safety. Biological efficacy of A. spinosus was determined using incision wound healing model and measuring the tensile strength of a healing skin. Results showed that A. spinosus extract significant reduced inflammation and wound area. The percentage viability of cells were 96.20 and 96.23 %, respectively for HaCaT and MEF cells after 48 h of treatment; however, surviving factor were 0.71 ad 0.79, respectively. The tensile strength was 574.5 g after treatment with drug as compared to the control group. It can be concluded based on findings that A. spinosus may be used as an alternative medicine in the healing of wound.

Evaluation of Wound Healing Activity of 80% Hydromethanolic Crude Extract and Solvent Fractions of the Leaves of Urtica simensis in Mice.

BackgroundLeaves of Urtica simensis (U. simensis) have been used traditionally for wound healing in different communities in Ethiopia. In spite of this, there were no scientific data documented regarding the wound healing activity of this plant. There is a need to investigate herbal remedies for the treatment of wounds in order to overcome the limitations of conventional drugs.Aim of the StudyAim of the study was to evaluate the wound healing activity of extract and solvent fractions of the leaves of U. simensis in mice.MethodsLeaves of U. simensis were washed, dried under shade and ground into coarse powder and then extracted by 80% methanol with three consecutive macerations. Part of the extract was fractionated with n-hexane, chloroform and water. In excision and burn wounds, healing progress was measured by wound contraction, epithelialization period and histopathology investigation whereas incision wound healing was assessed by skin breaking strength.ResultsIn excision wound model, the 5% and 10% crude extract ointments showed significant (p < 0.001) wound contractions during day 8 to day 16 evaluations. Similarly, in burn wound model, both 5% and 10% crude extract ointments produced significant (p < 0.001) wound contractions starting from day 12 and 10, respectively. In both models, the periods of epithelialization were also significantly reduced and favorable histopathologic changes were produced by the crude extract ointments. The solvent fractions of the crude extract as well produced significant wound contractions as evaluated in excision wound model. The fractions also significantly reduced the period of epithelialization in this model. The aqueous fraction found to be more active than either chloroform or n-hexane fraction in wound healing.ConclusionResults of this study indicated that methanol extract and aqueous fractions of the leaves of U. simensis possess dose-dependent wound healing activity, thus supporting traditional claims.

In Vivo Evaluation of the Wound Healing Activity of Extracts and Bioactive Constituents of the Marine Isopod Ceratothoa oestroides.

Wound healing is a fundamental response to tissue injury and a number of natural products has been found to accelerate the healing process. Herein, we report the preparation of a series of different polarity (organic and aqueous) extracts of the marine isopod Ceratothoa oestroides and the in vivo evaluation of their wound healing activity after topical administration of ointments incorporating the various extracts on wounds inflicted on SKH-hr1 hairless mice. The most active extract was fractionated for enrichment in the bioactive constituents and the fractions were further evaluated for their wound healing activity, while their chemical profiles were analyzed. Wound healing was evaluated by clinical assessment, photo-documentation, histopathological analysis and measurement of biophysical skin parameters, such as transepidermal water loss (TEWL), hydration, elasticity, and skin thickness. The highest levels of activity were exerted by treatment of the wounds with a fraction rich in eicosapentaenoic acid (EPA), as well as myristic and palmitoleic acids. Topical application of the bioactive fraction on the wounds of mice resulted in complete wound closure with a skin of almost normal architecture without any inflammatory elements.

Evaluation of Wound Healing Activity and Preliminary Phytochemical Screening of Thespesia populnea Bark Extracts

The leaves and bark of Thespesia populnea are used for the treatment of fracture wounds and as an antiinflammatory poultice applied to ulcers and boils, as a folk medicine. The aim of the present study was to evaluate the wound healing activity and phytochemical screening of Thespesia populnea barks extract. The petroleum ether, chloroform, acetone, ethanol and aqueous extract prepared. All the extracts were screened for preliminary phytochemical to determine the nature of secondary metabolite present in bark. Excision wound models were used to evaluate the wound healing activity of extract. The 250 mg and 500 mg of petroleum ether, chloroform, acetone, ethanol and aqueous extract were individually incorporated with 100 g of Carbopol 940 to get 2.5% and 5% (w/w) gel. Preliminary phytochemical investigations of the extracts of barks of Thespesia populnea revealed the presence of flavonoids, tannins, phenolic compounds, alkaloids, glycosides, fats and carbohydrates. The order of wound healing activity of various extract were Ethanol extract &gt; Aqueous extract &gt; Acetone extract &gt; Chloroform extract &gt; Petroleum ether extract. The ethanol extracts of exhibited maximum wound healing activity compared to other extracts. The findings could justify, at least partially, the inclusion of this plant in the management of wound healing in folk medicine.

Wound Healing Activity of Extracts and Formulations of Aloe vera, Henna, Adiantum capillus-veneris, and Myrrh on Mouse Dermal Fibroblast Cells.

Background:Among the most important factors in wound healing pathways are transforming growth factor beta1 and vascular endothelial growth factor. Fibroblasts are the main cell in all phases wound closure. In this study, the extracts of plant materials such as Adiantum capillus-veneris, Commiphora molmol, Aloe vera, and henna and one mixture of them were used to treatment of normal mouse skin fibroblasts.Methods:Cytotoxic effects of each extract and their mixture were assessed on mouse skin fibroblasts cells using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. We performed migration assays to assess migration properties of mouse skin fibroblasts cells in response to the extracts. Changes in the gene expression of the Tgfβ1 and Vegf-A genes were monitored by real-time polymerase chain reaction.Results:A. capillus-veneris, C. molmol and henna extract improved the expression of Tgfβ1 gene. All used extracts upregulated the expression of Vegf-A gene and promoted the migration of mouse fibroblast cells in vitro.Conclusions:The present study demonstrated that the mentioned herbal extracts might be effective in wound healing, through the improvement in the migration of fibroblast cells and regulating the gene expression of Tgfβ1 and Vegf-A genes in fibroblast cells treated with extracts.

Wound healing activity of extracts derived from Shorea robusta resin

Context: Shorea robusta Gaertn.f. (Dipterocarpaceae) resin is used for treating infected wounds and burns by tribals in India.Objectives: The objective of this study was to investigate wound-healing activity of S. robusta resin extracts and essential oil in rats.Materials and methods: Methanol extract (SRME), petroleum ether, benzene insoluble fraction of methanol extract (SRPEBIME), and essential oil (SREO) of S. robusta resin were incorporated in soft yellow paraffin (10% w/w) and applied once daily on incision and excision wounds of Wistar rats. Framycetin ointment (1.0% w/w) was applied to the standard group. Tensile strength (on the 10th day), wound contraction, and scar area (on the 14th day) were recorded. On the 15th day, granulation tissues of excision wounds were analyzed for total protein, hydroxyproline, and hexosamine contents and activities of lipid peroxidation and super oxide dismutase (SOD). Histopathology of the wounds was also studied.Results and discussion: SRPEBIME and SREO healed incision and excision wounds faster than plain ointment base and framycetin. Tensile strength of SRPEBIME-treated incision wounds was 53% higher than that of control animals. In excision wounds, wound contraction and scar areas were found to be 99% and 7.7 mm2 (SRPEBIME) and 71.7% and 21 mm2 (control). Protein and hydroxyproline contents were higher in SRPEBIME (20.8 and 3.5% w/w) and SREO (17.4 and 2.8% w/w) groups as against 9.95 and 1.48% w/w in control groups. Histopathology revealed complete epithelization and new blood vessel formation in SRPEBIME groups.Discussion and conclusion: SRPEBIME and SREO have significant wound-healing activities on incision and excision wounds.

Evaluation of the wound healing potentials of two subspecies of Hypericum perforatum on cultured NIH3T3 fibroblasts

For centuries, Hypericum perforatum has been used in folk medicine to treat wounds. In the present study, the wound healing activities of extracts of H. perforatum ssp. perforatum (HPP) and H. perforatum ssp. veronense (HPV) were evaluated by comparing with a titrated extract of Centella asiatica (TECA) on NIH3T3 fibroblasts. The cells were incubated with the extracts. Using microscopical methods by staining cells, mitotic ability, morphological changes and collagen production in the fibroblasts were evaluated as parameters to approach possible wound repair mechanism(s). The wound healing activity caused an increase in the percentage of polygonal fibroblasts and in collagen granule numbers in fibroblasts of HPP and HPV. At 1 µg/mL, HPP caused a greater increase in mitotic cell numbers than HPV. The most increases in polygonal cell numbers were observed with HPV at 1 and 10 µg/mL. The number of collagen granules was increased with 1 µg/mL HPV being higher than HPP. As an indication of cytotoxic effects, round cells in response to HPV and HPP extracts, were found to be increased in concentrations higher than 10-50 µg/mL. The results indicated that the two subspecies of H. perforatum have different wound healing profiles as a result of the fibroblast migration and stimulation of collagen synthesis.

INVESTIGATION OF WOUND HEALING ACTIVITY OF METHANOLIC EXTRACT OF STEM BARK OF &lt;i&gt;MIMUSOPS ELENGI&lt;/i&gt; LINN

The present study was aimed to evaluate the wound healing activity of extract of bark part of Mimusops elengi. It is well-known plant in Indian traditional medicines. On the basis of traditional use and literature references, this plant was selected for wound healing potential. A methanolic extract of bark parts of Mimusops elengi was examined for wound healing activity in the form of ointment in three types of wound models on mice: the excision, the incision and dead space wound model. The extract ointments showed considerable response in all the above said wound models as comparable to those of a standard drug Betadine ointment in terms of wound contracting ability, wound closure time, tensile strength and dry granuloma weight. Histological analysis was also consistent with the proposal that Mimusops elengi bark extract exhibits significant wound healing.

Wound healing activity of cyperus rotundus linn.

The present study was aimed to evaluate the wound healing activity of extract of tuber parts of Cyperus rotundus . It is a well-known plant in Indian traditional medicine. On the basis of traditional use and literature references, this plant was selected for evaluation of wound healing potential. An alcoholic extract of tuber parts of Cyperus rotundus was examined for wound healing activity in the form of ointment in three types of wound models on rats: the excision, the incision and dead space wound model. The extract ointments showed considerable difference in response in all the above said wound models as comparable to those of a standard drug nitrofurazone ointment (0.2% w/w NFZ) in terms of wound contracting ability, wound closure time and tensile strength.