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Background: Wound can be defined as disruption of cellular, anatomical, or functional continuity of living tissues. Nicotine causes damage to the epithelial layer of blood vessel and delays wound healing. It plays an important pathogenic role in impaired wound healing. Although in the last millennium, topical use of nicotine has been reported. It promotes collagen synthesis and, in turn, promotes wound healing. The role of topical nicotine on wound healing is controversial. Therefore, it was planned to evaluate and compare wound healing activity of various doses topical nicotine in rats. Aim and Objectives: The objectives of this study were to evaluate the effect of topical nicotine on wound healing in an excision wound model in rats. Materials and Methods: For evaluation of the wound healing effects of the nicotine, excision wound model was used. Nicotine was applied topically in a dose of 1.5 g%, 3.0 g%, and 6.0 g% petroleum base. Petroleum jelly served as control for topical nicotine. Dressing done by applying topical nicotine until (20 days) complete wound healing was observed. Parameters evaluated were surface area of wound and percentage closure. Results: Findings of this show that, on day 4, nicotine 3.0 g% and 6 g% the wound surface area were more as compared to control. On day 12, nicotine 6.0 g% showed significantly more wound surface area than control (P < 0.05). Percentage wound contraction with topical nicotine (6.0 g%) was less as compared to control on day 4, 8, and 12 (P < 0.001). On day 16, percentage wound contracture with topical nicotine (6.0 g%) contraction was significantly less as compared to control (P < 0.05). Although percentage wound contraction with topical nicotine (all preparations) and control was similar on day 20. Conclusion: Finding shows that topical nicotine impairs wound healing in a dose related pattern during initial stages of healing in an excision wound model. However, there is no delay in wound healing with any dose of topical nicotine.
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A wound is a break in the integrity of the skin or tissues often which may be associated with disruption of the structure and function. Globally, the magnitude of acute wounds as a healthcare problem is sharply rising mainly due to industrialization. There is still a need to revisit the ancient healing methods by using traditional medicine aiming to discover a wound healing drug with better protection, rapid granulation changes, least side effects, good bio-availability and low cost. A folk medicinal plant Humboldtia vahliana Wight. belongs to the family Fabaceae, is a medium sized tree with rough, dark brown bark mottled with white. Its stem bark is used for wound healing among the tribes. Aims and objectives: The study aims to evaluate the in-vivo wound healing action of Humboldtia vahliana Wight. through excision and incision animal wound models. Methodology: 36 male Wistar albino rats weighing 150-250gm. were selected and made into 3 groups each for both incision and excision wounds, i.e., control, standard and trial group -each containing 6 rats. The trial drug Humboldtia vahliana Wight. was applied over the wound area in the form of ‘Kalka’. In excision wound model, percentage of wound contraction was the parameter for the study and was achieved by using Planimetry. In incision wound model, tensile strength was the parameter and was achieved by Local Tensiometer. Results: In case of both Incision as well as Excision wound contraction study, the data shows a statistically non-significant increase in percentage wound contraction of Trial group when compared to Control and Standard groups. Interpretation and Conclusion: The stem bark of Humboldtia vahliana Wight. showed better wound healing action in Wistar albino rats when percentage of efficacy or mean values were compared
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Background: Calendula officinalis is one of those plants which have medicinal importance due to its flowers (HECO) has pharmacological activity the important pharmacological parameters have been less investigated properly and can be scientifically proved by reverse pharmacology. It was found of interest to evaluate these properties of extract of flowers of Calendula officinalis.Methods: Study was conducted in Albino Wistar rats. For evaluating wound healing activity Excision wound model and Incision wound mode were used containing 4 groups each. The wound contraction was studied by tracing the raw wound area on graph paper. Scar area and time for complete epithelisation were measured. The percentage of wound contraction was recorded. The differences between experimental groups were compared by ANOVA followed by Students “t” unpaired test.Results: In the excision wound healing model, 5% and 10% flowers showed a highly significant reduction in wound area as compared with control. In incision wound model, rats treated with 5% and 10% ointment of Calendula officinalis flowers extract showed highly significant increase in tensile strength as compared to control.Conclusions: It was found that the Calendula extract enhanced the wound healing in both the models as seen by increased synthesis of connective tissue especially collagen. There was a significant increase in the granuloma tissue. In both the models wound contraction and increased tensile strength was found to be statistically significant.
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Objective: To investigate the wound-healing effect of Alocasia longiloba (A. longiloba) petiole extract on wounds in rats. Methods: Twenty-two male Sprague-dawley rats were randomly assigned to receive 10% solcoseryl gel, phosphate buffer saline, 50% ethanol, 95% ethanol and hexane extracts of A. longiloba at 1.5%, 3% and 6% doses, respectively. A full thicknesses wound (6 mm) was created on the dorsal of the rat; and all rats were applied with the extract solutions, 10% solcoseryl gel and phosphate buffer saline once a day topically until day 12. The wound was photographed on day 1, 6 and 12, and the percentage of wound contraction was calculated. On day 12, rats were sacrificed and histological examination of granulation tissue was carried out using haematoxylin & eosin and Masson's Trichrome stain to determine the wound healing effect. Results: In this study, 6% of 50% and 95% ethanol extracts of A. longiloba showed 82.50% and 82.32% wound contraction, respectively, and were comparable with 10% solcoseryl gel (82.30%). Meanwhile, phosphate buffer saline treated group showed the lowest wound contraction (69.86%). Histological assessment of wound treated with 6% of 95% ethanol extract of A. longiloba showed distinct epidermal and dermal layer, higher proliferation of fibroblast and more angiogenesis with collagen compared to other wound treated groups. Conclusions: A. longiloba petiole extracts have a wound healing potential and 6% of 95% ethanol extract of A. longiloba is more effective. Further studies are required to understand the wound healing mechanism of action of the extract.
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Objective: To investigate the wound-healing effect of Alocasia longiloba (A. longiloba) petiole extract on wounds in rats.Methods: Twenty-two male Sprague-dawley rats were randomly assigned to receive 10％ solcoseryl gel, phosphate buffer saline, 50％ ethanol, 95％ ethanol and hexane extracts of A. longiloba at 1.5％, 3％ and 6％ doses, respectively. A full thicknesses wound (6 mm) was created on the dorsal of the rat; and all rats were applied with the extract solutions, 10％ solcoseryl gel and phosphate buffer saline once a day topically until day 12. The wound was photographed on day 1, 6 and 12, and the percentage of wound contraction was calculated. On day 12, rats were sacrificed and histological examination of granulation tissue was carried out using haematoxylin & eosin and Masson's Trichrome stain to determine the wound healing effect.Results: In this study, 6％ of 50％ and 95％ ethanol extracts of A. longiloba showed 82.50％ and 82.32％ wound contraction, respectively, and were comparable with 10％ solcoseryl gel (82.30％). Meanwhile, phosphate buffer saline treated group showed the lowest wound contraction (69.86％). Histological assessment of wound treated with 6％ of 95％ ethanol extract of A. longiloba showed distinct epidermal and dermal layer, higher proliferation of fibroblast and more angiogenesis with collagen compared to other wound treated groups. Conclusions: A. longiloba petiole extracts have a wound healing potential and 6％ of 95％ ethanol extract of A. longiloba is more effective. Further studies are required to understand the wound healing mechanism of action of the extract.
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Madayantika (Lawsonia inermis Linn.) is a miracle medicinal plant used in the treatment of various skin diseases especially in wound healing activity in the Indian system of medicine. Aim and Objective: The objective of the study presented in this article was to evaluate the wound healing potential of aqueous extract. The models usually used for evaluation of wound healing activity are Excision wound model, Incision Wound Model and Dead Space model. Among those excisions wound model is selected for the study. Healthy wistar strain Albino rats of either sex weighing 150-200gm were used for the study. Animals are acclimatized in a laboratory and then it were anaesthetized and then dorsal surface of rats were shaved to about an area of 500mm2 and then it was cut carefully with sterilized forceps and left undressed for open environment, then extracts of test drugs, Scaffolds containing aqueous extract and standard drug were applied and then observed and noted. Results: The extract of Madayantika (Lawsonia inermis Linn.) treated wounds were found to epithelize faster and rate of wound contraction was significantly (p<0.0001) increased as compared to control group (p< 0.01). The extract treated animals showed from 502 �364 to 25.1�252 reduction in wound area when compared with control groups from 502� 0.538 to 40.71� 0.166. Conclusion: Madayantika (Lawsonia inermis Linn.) possess significant wound healing effect which may beneficial in treating wounds. This drug showed extremely significant results in wound healing activity.
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Background: Wounds affect a large number of patients and seriously reduce the quality of life. The wound as a medical problem was first discussed by Maharshi Agnivesha in Agnivesha Samhita (later known as Charaka Samhita) as Vrana. Laghupanchamula denotes a combination of the roots of five herbs. However, in Ayurvedic classics, besides four common herbs viz. Kantakari, Brihati, Shalaparni and Prinshniparni, the fifth one is either Gokshura (LPG) or Eranda (LPE), and both formulations have been documented to have wound healing (Vrana) activity. Objective: The present study was undertaken to determine the in vivo wound healing activity and in vitro antimicrobial activity of 50% ethanolic extract of Laghupanchamula containing Gokshura (LPGE) and Laghupanchamula containing Eranda (LPEE) in rats with acute toxicity in mice. Materials and Methods: LPGE and LPEE (1000 mg/kg) was administered orally, once daily for 10 days (incision wound model) or for 24 days (excision wound model) in rats. LPGE and LPEE was studied for its in vitro antimicrobial and in vivo wound breaking strength (WBS) (incision model) and rate of contraction, period of epithelization and histology of skin (excision model). Results: LPGE and LPEE showed antimicrobial activity against skin pathogens, enhanced WBS, rate of contraction, skin collagen tissue formation and early epithelization period with low scar area indicating enhanced healing with histological evidence of more collagen formation in skin tissues. LPGE and LPEE also showed anti‑bacterial activity and seemed to be safe. Conclusion: Use of both formulations in Laghupanchamula for their wound healing and anti‑microbial activities is thus authenticated.
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Aims: Screening total alkaloidal extract from Alstonia boonei root bark for antimicrobial and wound healing activity. Methodology: The anti-microbial screening was performed using the agar well diffusion method and the excision wound model was employed for the wound healing experiment. Results: Thin-layer chromatography (TLC) of the extract showed four (4) spots when glacial acetic acid, ethyl acetate and chloroform were used in the ratio 1:3:1 respectively. However, six (6) spots were observed when ethyl acetate, methanol and water were used in the ratio 15:3:2 respectively. The total alkaloid extract showed antimicrobial activity against S. aureus, B. subtilis, P. aeruginosa and E. coli. The extract also showed significant wound healing activity (P<0.05). Conclusion: The TLC showed that the total alkaloid extract contains several individual chemical compounds. The alkaloid extract has good antimicrobial activity against the above listed microorganisms at concentrations of 1% (10mg/ml) and above. The total alkaloid extract of Alstonia boonei possesses significant wound healing activity which was evident by the increased rate of wound contraction and reduction in the period of epithelialization.
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Background: The plant Michelia champaca (MC) is widely used in the treatment of inflammation, constipation, dysmenorrhea, ulcers, wounds, fever, and cough. The aim was to evaluate the wound healing property of ethanolic extract of MC flowers in streptozotocin-induced diabetes in rats. Methods: Wound healing activity was assessed by incision and excision wound models. Five groups of n=6 rats and n=14 rats were used for incision and excision wound models, respectively. Group I rats, non-diabetic control and Group II rats diabetic control, received 1 ml of 0.5% caboxymethylcellolose, which was used to prepare a suspension of ethanolic extracts of MC. Group III, IV and V rats were given MC extract the suspension of 100 mg/kg, 200 mg/kg and 300 mg/kg respectively. Parameters observed were breaking strength of incision wound and wound contraction, epithelialization, hydroxyproline content of excision wound respectively. Results were analyzed using one-way analysis of variance, followed by Tukey’s post-hoc test. Results: Breaking strength, rate of wound contraction and hydroxyproline content were significantly increased, and the period of epithelialization was significantly reduced in Group IV and V rats respectively. Conclusion: Oral administration of ethanolic extract of MC promotes wound healing in diabetic rats. Hence, further study in humans is suggested.
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Aims: Objective of the study was to investigate the wound contraction and antiinflammatory activity of the 50% ethanolic extract of Fumaria indica (Hausskn.) Pugsley (Fumariaceae) by excision wound model and estimation of pro-inflammatory and antiinflammatory cytokines. Study Design: Prospective. Place and Duration of Study: Department of Pharmacognosy and Ethnopharmacology, CSIR-National Botanical Research Institute, Lucknow, India. December 2012 to May 2013. Methodology: Dried powdered whole plant of Fumaria indica was extracted with 50% ethanolic extract. The extract was subjected to HPTLC fingerprinting, DPPH free radical scavenging and antibacterial activities. Further, 10% F. indica ointment was tested for its wound contraction, pro-inflammatory and anti-inflammatory potentials. Results: The 50% ethanolic extract showed presence of ellagic acid, ferulic acid andquercetin. The IC50 was 0.11mg/mL and significant antibacterial activity was observed against S. aureus and E. coli. The 10% F. indica ointment applied topically to the wound area reducedits size from 500 mm2 to 40 mm2 by the end of 9th day. These results were comparable to the effect of 0.2% nitrofurazone. The extract further showed a reduction in the release of pro-inflammatory cytokines (TNFα and IL-6) and an increase in antiinflammatory cytokine IL-10.
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Wound healing occurs as a fundamental response to tissue injury. Polyphenols are considered to be principle constituent to promote wound healing. Plagiochila beddomei was applied clinically by Paliyar tribes of Madurai district to treat intractable wounds. To validate the ethnotherapeutic claims of the plant in skin diseases, the effect of methanolic and aqueous extracts from P. beddomei on wound healing as well as angiogenesis was studied. 7th day and 10th day after excision wounds creation, the percent wound contraction of the extracts group was higher than that of Madecassol® (reference drug) group. On 3rd, 7th and 10th day after wounds creation, the wound healing quality of the extracts group was better than that of Madecassol® group on terms of granulation formation and collagen organization. On 3rd day after wounds creation, the micro vessel density and vascular endothelial growth factor expression of methanolic extracts group was higher than that of Madecassol® group. Phytochemical analysis of the extracts showed the presence of flavonoids, saponins, tannins and phenols. The results show that P. beddomei extract has potent wound healing property probably resulting from the remarkable angiogenic activity.
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The petroleum ether, chloroform, methanol and aqueous extracts of Cleome rutidosperma DC (Family: Capparidaceae) roots were evaluated for their wound healing activities in rats using excision and incision wound models respective-ly. The effects of test samples on the rate of wound healing were assessed by the rate of wound closure, period of epithelialisation and wound breaking strength. Nitrofurazone (0.2% w/w) in simple ointment I.P. was used as reference standard for the activity comparison. The results of the study revealed that the animals treated with methanol and aqueous extracts of C. rutidosperma showed faster rate of wound healing compared to other extracts under study. The chloroform extract of the selected plant also produced promising results but the effects are seen to be of lesser extent than the corresponding methanol and aqueous extracts. The petroleum ether extract did not produce significant results. The present work justifies the use of C. rutidosperma roots for wound healing activity as claimed in the folklore literature.
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The petroleum ether, chloroform, methanol and aqueous extracts of Cleome rutidosperma DC (Family: Capparidaceae) roots were evaluated for their wound healing activities in rats using excision and incision wound models respective-ly. The effects of test samples on the rate of wound healing were assessed by the rate of wound closure, period of epithelialisation and wound breaking strength. Nitrofurazone (0.2% w/w) in simple ointment I.P. was used as reference standard for the activity comparison. The results of the study revealed that the animals treated with methanol and aqueous extracts of C. rutidosperma showed faster rate of wound healing compared to other extracts under study. The chloroform extract of the selected plant also produced promising results but the effects are seen to be of lesser extent than the corresponding methanol and aqueous extracts. The petroleum ether extract did not produce significant results. The present work justifies the use of C. rutidosperma roots for wound healing activity as claimed in the folklore literature.
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The dexamethasone suppressed and normal wound healing effect of ethanolic extract of leaves of Hyptis suaveolens (L) poit. (EEHS) at 400mg/kg and 800mg/kg was studied in Wistar rats. Two wound models viz. incision and excision wounds were used in this study. The parameters studied were breaking strength in case of incision wounds, period of epithelization and wound contraction in case of excision wound. The dexamethasone treated group showed a significant (P<0.05) reduction in the wound breaking strength in incision type of wound model and significant increase in epithelization period and reduction in percentage of wound contraction in excision type of wound model as compared to control group. Extract treated groups showed significant (P<0.05) improvement in all the wound healing parameters of incision and excision wound models as compared to control. In incision wound model, Co administration of EEHS at both the dosage levels with dexamethasone had significantly (P<0.05) increased the wound breaking strength as compared to dexamethasone only treated group and was seen more at dosage level of 400mg/kg. Similarly, in excision wound model, there was significant improvement (P<0.05) in both the parameters when EEHS was co administered with dexamethasone as compared to dexamethasone only treated group but improvement was more at dosage level of 800mg/kg.
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The extract of K. pinnata was evaluated for its wound healing activity by using excision wound model in rats. On day 11, animals treated with the ethanolic leaf extract exhibited 86.33 % reduction in the wound area, compared to petroleum jelly treated control (69.36%) and the mupirocin treated standard (85.49%). The hydroxyproline content of extract treated animals was higher, as compared to control and the standard groups. Histological analysis was also consistent with the proposal that K. pinnata leaf extract exhibits significant wound healing potential. The increased rate of wound contraction and hydroxyproline content in the extract treated animals supports the claims made by traditional healers of the benefits obtained from the medicinal use of K. pinnata.