ABSTRACT
While there are several tools to study learning styles of students, the visual-aural-read/write-kinesthetic (VARK) questionnaire is a simple, freely available, easy to administer tool that encourages students to describe their behavior in a manner they can identify with and accept. The aim is to understand the preferred sensory modality (or modalities) of students for learning. Teachers can use this knowledge to facilitate student learning. Moreover, students themselves can use this knowledge to change their learning habits. Five hundred undergraduate students belonging to two consecutive batches in their second year of undergraduate medical training were invited to participate in the exercise. Consenting students (415 students, 83%) were administered a printed form of version 7.0 of the VARK questionnaire. Besides the questionnaire, we also collected demographic data, academic performance data (marks obtained in 10th and 12th grades and last university examination), and self-perceived learning style preferences. The majority of students in our study had multiple learning preferences (68.7%). The predominant sensory modality of learning was aural (45.5%) and kinesthetic (33.1%). The learning style preference was not influenced by either sex or previous academic performance. Although we use a combination of teaching methods, there has not been an active effort to determine whether these adequately address the different types of learners. We hope these data will help us better our course contents and make learning a more fruitful experience.
Subject(s)
Educational Status , Learning , Students, Medical , Female , Humans , Male , Surveys and QuestionnairesABSTRACT
In recent years, oxidative stress and free radicals have been implicated in impaired wound healing. Ocimum sanctum (O. sanctum), a plant widely used in Ayurveda, possesses anti-inflammatory and antioxidant properties. The present study was undertaken to assess the potential of alcoholic and aqueous extracts in wound healing in Wistar albino rats. The rats were divided into five groups of six animals each. Group 1 is normal wounded control and the other four groups were treated with two different doses each of alcoholic and aqueous extract of O. sanctum. The wound healing parameters were evaluated by using incision, excision and dead space wounds in extract-treated rats and controls. Both the doses of alcoholic and aqueous extract significantly increased wound breaking strength, hydroxyproline, hexuronic acid, hexosamines, superoxide dismutase, catalase, reduced glutathione and significantly decreased percentage of wound contraction and lipid peroxidation when compared with the control group. The results suggest that O. sanctum has antioxidant properties, which may be responsible and favorable for faster wound healing and this plant extract may be useful in the management of abnormal healing and hypertropic scars.
ABSTRACT
The present study was performed to evaluate the wound healing and antioxidant effect of aqueous extract of Ocimum sanctum Linn. (O. sanctum) in rats. Albino rats of either sex were divided into 2 groups. Group I: Wounded control rats; Group II: Wounded rats administered O. sanctum aqueous extract. Wound breaking strength in incision wound model, epithelization period and percent wound contraction in excision wound model were studied. Using dead space wound model, granulation tissue breaking strength, granulation tissue dry weight, hydoxyproline level in dry granulation tissue, superoxide dismutase (SOD) and catalase levels in wet granulation tissue were estimated in both the groups. Increased wound breaking strength, decreased epithelization period, increased percent wound contraction, increased granulation tissue weight and hydroxyproline concentrations were observed. The increased activity of antioxidant enzymes such as SOD, catalase level in extract treated group compared to controls. Granulation tissue was subjected to histopathological examination to determine the pattern of lay-down for collagen using Haematoxylin and Eosin stains which confirm the results. Owing to wound healing and antioxidant activities, O. sanctum may be useful in the management of abnormal healing such as keloids and hypertrophic scars.
Subject(s)
Antioxidants/pharmacology , Catalase/physiology , Ocimum , Plant Extracts/pharmacology , Superoxide Dismutase/physiology , Wound Healing/drug effects , Animals , Collagen/metabolism , Female , Male , Oxidative Stress , RatsABSTRACT
The effects of the alcoholic extract of the flowers ofIxora coccinea were studied on some of the antioxidant enzymes in dead space wounds created in rats. Increases in the tensile strength of the wound and in the level of lysyl oxidase, the crucial enzyme for collagen maturation, were observed indicating a definite prohealing action. In addition, a highly significant increase in the levels of catalase, glutathione peroxidase and glutathione reductase was observed in the drug-treated group. Thus, the gain in tensile strength may be attributed not only to the better cross-linking but also to the antioxidant properties of the drug.
