Journal of Basic and Clinical Pharmacy www.jbclinpharm.com Anti-Inlammatory Activity of Aqueous Extract of Beta Vulgaris L. Swati Jain*, Vipin Kumar Garg and Pramod Kumar Sharma Department of Pharmaceutical Technology, Meerut Institute of Engineering & Technology, NH-58, Baghpat bypass crossing, Delhi-Haridwar Highway, Meerut (UP). ABSTRACT: The present study deals with the investigation of phytochemically evaluated aqueous extract of leaves of Beta vulgaris for its anti-inflammatory activity. The anti-inflammatory activity was evaluated by carrageenan induced rat paw oedema method for acute inflammation and cotton pellet granuloma method for chronic inflammation. The standard drug used was indomethacin (10 mg/kg) for both the models. In both methods, aqueous extract at a dose level of 1000 mg/kg has shown significant activity which is comparable to that of the standard. KEYWORDS: Beta vulgaris, Indomethacin, Anti-inflammatory, Carrageenan received on 16-04-2011 modified on 25-04-2011 accepted on 04-05-2011 available online 15-05-2011 www.jbclinpharm.com inflammation. Histamine, 5-hydroxytryptamine and bradykinin are the first detectable mediators in the early phase of carrageenan-induced inflammation [3], whereas prostaglandins are detectable in the late phase of inflammation [4]. Beta vulgaris (Linn.), belonging to chenopodiaceae, family is a native of South Europe, extensively cultivated as an article of food and especially for the production of sugar, and presents many varieties. It is a tall, succulent plant, about 2 feet high, with large, fleshy, glossy leaves, angular stems and numerous leafy spikes of green flowers [5]. here are some reports indicating the potential hepatoprotective, antioxidant and anti-inflammatory activities of Beta vulgaris, though without any scientific proof [6]. Since no detailed scientific literature is available on anti-inflammatory activity of Beta vulgaris, therefore the present work was undertaken. INTRODUCTION I nflammation is defined as local response of living mammalian tissue to injury due to any agent. Inflammation manifests usually in form of painful swelling associated with some changes in skin covering the site [1]. Inflammation can be classified as either acute or chronic. Acute inflammation is the initial response of the body to harmful stimuli and is achieved by the increased movement of plasma and leukocytes from the blood into the injured tissues. A cascade of biochemical events propagates and matures the inflammatory response, involving the local vascular system, the immune system, and various cells within the injured tissue. Prolonged inflammation, known as chronic inflammation, leads to a progressive shift in the type of cells which are present at the site of inflammation and is characterized by simultaneous destruction and healing of the tissue from the inflammatory process [2]. Several experimental models of paw oedema have been described. Carrageenan-induced paw oedema is widely used for determining the acute phase of the MATERIAL AND METHOD Experimental animals Albino Wistar rats weighing between 200-250g were used. Institutional Animal Ethics Committee *Corresponding Author: Email: 10sweetswati@gmail.com 83 Journal of Basic and Clinical Pharmacy Swati Jain et al. approved the experimental protocol (Ethical clearance number: 711/02/a/CPCSEA). Animals were maintained under standard conditions in an animal house approved by Committee for the Purpose of Control and Supervision on Experiments on Animals (CPCSEA). solution of carrageenan in saline into the subplantar aponeurosis of the right hind paw of the rats. he vehicle, extracts and the standard drugs were administered orally 60 min prior to the injection of the phlogestic agent. he volumes of edema of the injected and the contralateral paws were measured at 1, 2, 3, 4, 5 h after the induction of inflammation using a plethysmograph to calculate the percentage of anti-inflammatory activity [10]. In the above model, % inhibition of oedema was calculated as follows: Plant material he leaves of Beta vulgaris L. var. bengalensis Roxb. were collected from the local area of Meerut district and identified and authenticated by Dr. Anjula Pandey, Taxonomist, National Herbarium of Cultivated Plants, New Delhi. Voucher specimens (No. NHCP/NBPGR/2010-26/920) have been kept in National Herbarium of Cultivated Plants, New Delhi and Department of Pharmaceutical Technology, MIET for future reference. % Inhibition of Oedema = (1-Vt/Vc) ×100 where, Vt is the inflammatory increase in paw volume of the rats of treated groups. Vc is the inflammatory increase in paw volume of the rats of control groups. Extraction he leaves were dried under shade, reduced to moderately coarse powder and macerated with hot water for 48 hours to get aqueous extract. he aqueous extract was concentrated to dryness using rotary evaporator, giving yield as 23.41% (w/v) and preserved in a refrigerator. Aliquot portions of the aqueous extract of Beta vulgaris were weighed and suspended in an appropriate volume of Tween 80 (2%, v/v) for use on each day. Chronic inflammation - Cotton pellet granuloma he animals were grouped as described above to study the anti-inflammatory activity. he groups were fasted and treated with drugs/doses similar to that of carrageenan-induced hind paw edema. Sterile cotton pellets each weighing 30 ± 5mg were prepared and sterilized in a hot air oven at 123°C for 3 h. Each animal was placed under light with ether anesthesia and subcutaneously implanted four cotton pellets, one each into both the axillae and the groin region under aseptic conditions. he drugs were administered orally for seven days starting from the day of implantation of the pellets. All the animals had free access to drinking water and food. On the 8 th day, all the animals were sacrificed and the implanted cotton pellets were recovered, cleaned of surrounding tissues, and blotted with filter paper. hese cleaned pellets were weighed and dried in a hot air oven overnight at 70°C and the dry weights were noted [11]. Percentage inhibition of Granuloma Pouch in rats was calculated using the following formula: Preliminary Phytochemical Studies he aqueous extract was then subjected to qualitative phytochemical screening for the identification of the phytoconstituents. he aqueous extract showed positive tests for the presence of flavonoids, carbohydrates, pentose, amino acids, saponins, tannins and steroids. As traditionally, the aqueous paste or the aqueous extract of the plant is used to cure inflammation, and the anti-inflammatory activity of the aqueous extract of the plant at 500 and 1000 mg/kg dose levels [7] is being reported here. ANTI-INFLAMMATORY ACTIVITY Acute inflammation Carageenan induced rat paw oedema he animals were divided into four groups of six animals each and were fasted for a period of 24 h prior to the study. Group 1 was treated as control, group 2 received indomethacin 10mg/kg suspended in 2% Tween 80 (v/v)[8, 9]. Groups 3 and 4 were treated with 500 mg/kg and 1000 mg/kg of aqueous extract of Beta vulgaris suspended in 2% Tween 80. Edema was induced by injecting 0.1 ml of a 1% (w/v) Vol-002 Issue-002 May 2011 % Inhibition = (Control-Test)/Control×100 Statistical Analysis [12] All the results obtained from various activities, as described above, were analyzed statistically by using Student’s t test and p<0.05 were considered si gnificant. he statistical software used was Jindal Sigma stat (2.03v). 84 www.jbclinpharm.com Anti-Inflammatory Activity of Beta Vulgaris L. Journal of Basic and Clinical Pharmacy RESULT Table 1: Effect of aqueous extract of Beta vulgaris on carrageenan induced rat paw oedema Paw Volume After Carrageenan Injection Groups Dose (mg/kg) 1 hr. 2 hrs. 3 hrs. 4 hrs. 5hrs. EV EI (%) EV EI (%) EV EI (%) EV EI (%) EV EI Control - 0.16± 0.0036 - 0.21± 0.0036 - 0.26± 0.0049 - 0.29± 0.0097 - 0.31± 0.0125 - Indomethacin 10 0.17± 0.0047 6.25 0.18± 0.0047c 14.28 0.16± 0.0057c 38.46 0.14± 0.0086c 51.72 0.13± 0.0060c 58.06 Aqueous 500 0.165± 0.0042 3.125 0.205± 0.0061 2.38 0.24± 0.0072a 7.69 0.26± 0.0036b 10.34 0.27± 0.0057b 12.9 Aqueous 1000 0.17± 0.0057 6.25 0.20± 0.0057 4.76 0.18± 0.0047c 30.76 0.16± 0.0062c 44.82 0.15± 0.0036c 51.61 Values are expressed as mean ± SEM (n=6). a p<0.05, bp<0.02, cp<0.001 as compared to control group. EV- Oedema Volume and EI- Oedema Inhibition. Table 2: Effect of aqueous extract of Beta vulgaris on Cotton pellet granuloma S. No. Groups Dose (mg/kg) Dry Weight (mg) 1 Control - 106.95±0.91 2 Indomethacin 10 54.98±0.5115a 3 Aqueous 500 100.56±0.4153a 4 Aqueous 1000 62.55±0.4089a Values are expressed as mean ± SEM. (n=6) a p<0.001 as compared to control group DISCUSSION phase is attributed to the release of histamine and serotonin and the delayed phase is sustained by the leukotrienes and prostaglandins [13]. To further verify the anti-inflammatory activity of the extracts and its effects on the proliferative phase of inflammation, cotton pellet granuloma formation was used. he aqueous extract at a dose level of 500 and 1000 mg/kg showed a significant inhibitory effect on granuloma formation. his study revealed that the aqueous extract was active against the inflammation induced by a foreign body. his effect of extract was less pronounced than that of indomethacin. he present study shows that aqueous extract of Beta vulgaris possesses anti-inflammatory activity in carrageenan induced rat paw oedema. he activity profile of extract at 1000 mg/kg closely resembled to that of indomethacin. Carrageenan induced paw oedema was taken as a prototype of exudative phase of acute inflammation. Inflammatory stimuli microbes, chemicals and necrosed cells activate the different mediator systems through a common trigger mechanism. he development of carrageenaninduced oedema is believed to be biphasic. he early www.jbclinpharm.com 85 Vol-002 Issue-002 May 2011 Journal of Basic and Clinical Pharmacy Swati Jain et al. CONCLUSION REFERENCES he carageenan induced edema in rats was reduced to a lower level after supplementation of Beta vulgaris. he findings with Beta vulgaris are significant as the preparation is highly cost effective. As Beta vulgaris is used as a dietary vegetable, it is easily available all over the world. herefore it is worthwhile to conduct detailed studies in order to explore the full potential of this plant in reducing inflammation in humans from the point of view of cost and availability for people at all socioeconomic levels. 1. Jain PS, Bari SB. Anti-inflammatory activity of Abelmoschus manihot extracts. Int. J. Pharmacol. 2010; 6(4): 505-509. 2. Kumar C, Collins, eds. Pathologic Basis of Disease. Robbins: Philadelphia: W.B Saunders Company; 1998. 3. Di RM, Willoughby DA. Screens for anti-inflammatory drugs. J Pharm. Pharmacol. 1971; 23: 297. 4. Salvemini D, Wang ZQ, Bourdon DM, et al. Evidences of peroxynitrite involvement in the carrageenan- induced rat paw edema. Eur J Pharmacol. 1996a; 303: 217. 5. http://www.botanical.com/botanical/mgmh/b/beetro28.html 6. Agrawal A, Bavaskar S, Salunkhe P, et al. Beta vulgaris: A dearth of antidepressant activity in mice. Journal of Pharmaceutical Negative Results. 2010; 1(2): 55-57. 7. Agarwal M, Srivastava VK, Saxena KK, et al. Hepatoprotective activity of Beta vulgaris against CCl4-induced hepatic injury in rats. Fitoterapia. 2006 Feb; 77(2):91-3. 8. Akindele AJ, Adeyemi OO. Anti-inflammatory activity of the aqueous leaf extract of Byrsocarpus coccineus. Fitoterapia. 2007; 78: 25-28. 9. Khalil NM, Sperotto JS, Manfron MP. Anti-inflammatory activity and acute toxicity of Dodonaea viscosa. Fitoterapia. 2006; 77: 478-80. 10. Mayuren C, Ilavarasan R. Anti-inflammatory activity of ethanolic leaf extracts from Adenanthera pavonina (L) in Rats. Journal of Young Pharmacists. 2009; 1(2): 125-128. 11. Freeman PC, Mangan FR, Watkins DK. A study of the effects of nabumetone: A novel anti-inflammatory drug on cell infiltration in to sterile cotton pellets implanted in rats. J Pharm Pharmacol. 1982; 34:580-83. 12. Kulkarni SK, eds. Handbook of Experimental Pharmacology. Vallabh Prakashan, New Delhi; 1993. 13. Mishra G, Singh P, Garg VK, et al. Anti-Inflammatory activity of alcoholic and aqueous extract of Wedelia chinensis. Pharmacologyonline. 2009; 2: 394-402. ACKNOWLEDGEMENT he authors are thankful to Dr. Anjula Pandey, Taxonomist, National Herbarium of Cultivated Plants, National Bureau of Plant Genetic and Resources, New Delhi for identification and authentication of the plant and to the Department of Pharmaceutical Technology, MIET, Meerut for providing research facilities to carry out the work Vol-002 Issue-002 May 2011 86 www.jbclinpharm.com