ABSTRACT
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.
ABSTRACT
Generally, Plants have immense potential in the wounds management and treatment.In Chinese herbology, Hibiscus plant is a potent herb and have a good medicinal values but not scientifically approached. The present study aims to investigate the wound healing and antimicrobial activity of ethanolic extract of Hibiscus hirtus Linn.(HH). Wound healing activity was carried out by excision, incision and burn wound models. Antimicrobial activity was determined by cup plate method. Healing rate was assessed from the rate of wound contraction, epithelialization rate, tensile strength, hexosamine and hydroxyproline content. From the obtained results, it was indicated that the wound contraction and increased tensile strength of Hibiscus hirtus extract exhibits potent wound healing capacity. Hexosamine and hydroxyproline expression were also correlative with the pattern of healing observed. Histological observation indicates that the wounds treated with Hibiscus hirtus extract and povidone iodine have reduced scar formation and enhances fibroblast proliferation, angiogenesis, keratinization and epithelialization. The Hibiscus hirtus extract has excellent antimicrobial activity against the various organisms. Wound healing activity of our ethanolic extract of Hibiscus hirtus has shown the good effect which has proved by different physical, histological, biochemical parameters. Significant antimicrobial activity shown may be due to major active constituents present in plant.
Subject(s)
Wound Healing , Plant Extracts/analysis , Hibiscus/adverse effects , Anti-Infective Agents/pharmacology , Plants, Medicinal/classificationABSTRACT
Alternanthera brasiliana Kuntze is a neotropical native species used against inflammation, cough and diarrhea etc. Traditionally it is used as hemostatic in north east India, but its excellent wound healing activity in excision, incision, aged, burn, immunocompromised wound were reported by us. Keeping in mind the delayed healing of wound in diabetic patients and its complications, the present study was undertaken to evaluate the healing efficacy of topical application of Alternanthera brasiliana in experimentally induced diabetic wounds in Sprague Dawley rats. The animals were divided into three groups of six animals each. Group I is control, group II is treated with topical application of the extract and group III is used as standard. Prohealing activity was assessed by wound contraction, histopathological study, modulation of enzymatic and non enzymatic parameters. There was significant (P<0.05) increase in wound contraction, augmented levels of superoxide dismutase, catalase, reduced glutathione, hydroxyproline, protein and ascorbic acid level in the treated group as compared to the control group. It can be hypothesized that A. brasiliana favours wound healing in diabetic animals, due to the presence of various phytoconstituents which are known for augmenting healing and its antioxidant activity as well. The study has paved the way for more detailed study of this highly medicinal plant considered as Brazilian penicillin or Joy wood in Brazil.
ABSTRACT
This study evaluated the antioxidant, antimicrobial and wound healing activities from the aqueous extract of cubiu (AEC - Solanum sessiliflorum Dunal). The antioxidant activity was evaluated by the scavenging method with 2.2-diphenyl-1.2-picrylhydrazyl radical (DPPH) and, the antimicrobial activity, by the turbidimetric method. The dermal ulcers induced model in rabbits was used in order to study the wound healing activity. Creams containing 5% and 10% AEC and 5% AEC associated with 1% copaiba oil and 1% rosemary oil were tested. The wounds were macroscopically (ulcer aspect and ulcer area contraction) and microscopically examined. The histological study considered the number of inflammatory cells, fibroblasts, blood vessels, collagen and extracellular matrix areas. Analysis of variance (ANOVA) followed by Tukey's post hoc test was performed. The AEC showed IC50=65.12 µg/mL and no antimicrobial activity against all of the strains tested was verified. The formulation containing 5% AEC associated with 1% copaiba oil exhibited the greatest pharmacological potentiality in dermal wound healing due to the increased number of blood vessels (p <0.001) and the largest extracellular matrix area (p <0.001) presented. The results justify further studies about biological activities of cubiu in the search for bioactive compounds.
O presente estudo avaliou as atividades antioxidante, antimicrobiana e cicatrizante do extrato aquoso do cubiu (EAC - Solanum sessiliflorum Dunal). A atividade antioxidante foi avaliada pelo método sequestrante de radicais 2,2-difenil-1,2-picrilhidrazil (DPPH) e, a atividade antimicrobiana, por método turbidimétrico. Para o estudo da atividade cicatrizante foi utilizado o modelo de indução de úlceras dérmicas em coelhos, sendo testados cremes contendo 5% e 10% de EAC e cremes contendo 5% de EAC associado à 1% de óleo de copaíba e à 1% de óleo de alecrim. As lesões foram analisadas macro (aspecto da lesão e contração da área ferida) e microscopicamente. O estudo histológico considerou o número de células inflamatórias, fibroblastos, vasos sanguíneos, e as áreas de colágeno e de matriz extracelular. Foi realizada análise de variância (ANOVA) seguida do teste post hoc de Tukey. O EAC apresentou IC50=65,12 µg/mL e não apresentou atividade antimicrobiana frente a nenhuma das cepas testadas. A formulação contendo 5% de EAC associado a 1% de óleo de copaíba foi a que exibiu maior potencialidade farmacológica na cicatrização de lesões dérmicas, devido ao maior número de vasos sanguíneos (p<0,001) e a maior área de matriz extracelular (p<0,001) apresentados. Os resultados encontrados justificam novos estudos sobre as atividades biológicas do cubiu na busca de compostos bioativos.
Subject(s)
Solanum , Phytotherapy , Anti-Infective Agents , AntioxidantsABSTRACT
Wound healing is an integrated cellular and biochemical process of restoring normal structure functions of damaged tissue. Healing is a natural phenomenon by which body itself overcome the damaged to the tissue but the rate of healing is very slow and chance of microbial infection is high. Improvement in healing process can be accomplish either shorten the time required for healing or to minimize the undesired consequences. India has a rich tradition of plant-based knowledge on healthcare system. Several herbs and medicinal plants proved to be a wound healers were identified and formulated for treatment and management of wounds. Various herbal products have been used in management and treatment of wounds over the years. The present review attempt to highlight some herbs and medicinal plants proved to be scientifically used for the treatment of cuts and wounds as a wound healer.
ABSTRACT
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.
ABSTRACT
Wound healing activity of the leaf extracts of Ammannia baccifera L., Lythraceae, and Blepharis maderaspatensis (L.) B.Heyne ex Roth., Acanthaceae, was investigated by excision and incision wound healing models in rats. A phytochemical screening was done to determine the major constituents of the chloroform, ethyl acetate and ethanolic fractions of ethanolic leaf extracts. The excision and incision models were used to assess the effect of the plant extracts on wound healing in rats. Phytochemical screening reveals the presence of tannins, saponins, steroids, terpenoids, and flavonoids in the extract. The wound healing effect was comparatively evaluated with a standard drug Framycetin cream. Significant wound healing activity was observed for the creams prepared with 5% ethanol fraction of B. maderaspatensis and 5% chloroform fraction of A. baccifera ethanolic leaf extracts. The results of histopathological evaluation supported the outcome of both incision and excision wound models. Ethanolic fraction of B. maderaspatensis and chloroform fraction of A. baccifera exhibited marked wound healing activity. B. maderaspatensis extract displayed a remarkable wound healing activity compared to A. baccifera.
ABSTRACT
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.
ABSTRACT
Objective: To establish the wound healing activity of methanolic, ethyl acetate and chloroform extracts of plant of Typhonium trilobatum. Methods: Two models were performed to evaluate the wound healing activity i.e. excision and incision models. In incision model the parameter which is carried out was breaking strength of the wounded skin. In excision model the percentage wound contraction and period of epithelialization were established for three extracts. Reference standard drug was povidone iodine ointments for comparison with other groups. Results: From the observation in both two models, methanolic and ethyl acetate extract were found greater wound healing activity than chloroform extract in terms of breaking strength in incision model and percentage wound contraction, period of epithelialization in excision model than that of other groups. Conclusions: The results indicate that the different extracts of Typhonium trilobatum has significant wound healing activity.
ABSTRACT
Wound healing is physiological process, which takes place by body's natural regenerative capacity. Due to various reasons there may be delay in healing and this prolonged healing may sometimes lead to scar formation. Currently attention has been focused on natural products to prevent infection and to promote healing. In the present study, Eugenia jambolana bark extracts was taken to investigate its wound healing property. Full thickness deep burn wound model in Albino rats, were used to study the healing efficiency. Formulations (10% ointment) of crude ethanolic extract of the Eugenia jambolana bark was applied tropically over thermal wound. It was found that ointment treated rats showed accelerated healing than the control. It was observed that 10% extract of the Eugenia jambolana bark has progressive effects on wound healing in the experimental groups. This study suggests that Eugenia jambolana bark powder could be developed as a therapeutic agent for wound healing.
ABSTRACT
In recent years, oxidative stress and free radicals have been implicated in impaired wound healing. Abelmoschus manihot (L.) Medik., Malvaceae, and Wrightia tinctoria R. Br., Apocynaceae, plants widely used in Ayurveda, possesses anti-inflammatory and antimicrobial properties. The present study was undertaken to assess the potential of petroleum ether and methanolic extracts in wound healing in Wistar albino rats. The rats were divided into six groups of six animals each. Group 1 is normal wounded control, group 2 received standard drug and the other four groups were treated with two different doses each of petroleum ether and methanolic extract of A. manihot and W. tinctoria. The wound healing parameters were evaluated by using incision wounds in extract-treated rats, standard and controls. Both the doses of petroleum ether and methanolic extract significantly increased wound breaking strength when compared with the control group.
Nos últimos anos, o estresse oxidativo e radicais livres têm sido implicados na cicatrização. Abelmoschus manihot (L.) Medik., Malvaceae e Wrightia tinctoria R. Br., Apocynaceae, plantas utilizadas na medicina Ayurveda, possuem propriedades antiinflamatórias e antimicrobianas. O presente estudo foi realizado para avaliar o potencial dos extratos de éter de petróleo e metanólico na cicatrização de feridas em ratos Wistar. Os ratos foram divididos em seis grupos com seis animais cada. O grupo 1 foi utilizado como controle, o grupo 2 recebeu a droga padrão e os outros quatro grupos foram tratados com duas doses diferentes de cada um dos extratos de A. manihot e W. tinctoria. Os parâmetros de cicatrização foram avaliados através da incisão feridas em ratos tratados com extrato, padrões e controles. Ambas as doses dos extratos de éter de petróleo e metanólico aumentaram significativamente força de ruptura da ferida quando comparados ao grupo controle.