ABSTRACT
Background: Withania somnifera (L.) (family-Solanaceae), known as ‘Indian ginseng’ or ‘Ashwagandha’ isacclaimed as an effective adaptogen, immunomodulator, aphrodisiac and sedative. Ashwagandha ghrita isa recognized ghee based Ayurvedic formulation. Few ancient texts suggest murcchana process forpreparation of Ashwagandha ghrita.Objective: The study was undertaken to evaluate probable effects of murcchana process on ghritapreparation with reference to time and storage conditions.Materials and Methods: Ashwagandha ghrita samples were prepared separately using plain ghee (Indiancow's ghee) and murcchana ghee. These formulations were stored separately in different glass bottles atroom temperature and 400C/75%RH. Organoleptic characters (colour, odour, taste, texture and touch)and physicochemical parameters (acid value, peroxide value, iodine value, saponification value, unsaponifiable matter, refractive index and specific gravity) were determined after 3, 6, 9 and 12 months.Plain ghee and prepared ghrita were subjected for antioxidant evaluation by various in vitro methods.Results: Changes were observed in organoleptic characters and physicochemical parameters of plainghee and Ashwagandha ghrita formulations. Alterations in these parameters were more pronounced athigh temperature and on long storage. Ashwagandha ghrita prepared with murcchana process exhibitedbetter antioxidant potential in all in vitro methods.Conclusion: The murcchana process was found to be beneficial towards quality of ghrita. Hence, Ashwagandha ghrita may be prepared along with murcchana herbs and stored in a good quality glass bottleto ensure improved shelf life of ghrita.
ABSTRACT
Background & objectives: Our previous study showed that cow ghee relative to soybean oil had a protective effect against carcinogen induced mammary cancer in rats. The objective of this study was to elucidate its biochemical mechanism. Methods: Two groups of 21 day old rats (20 each) were fed for 44 wk diet containing cow ghee or soybean oil (10%). Five animals from each group were sacrificed at 0 day and at 5, 21 and 44 wk for analysis of phase I and phase II pathways enzymes of carcinogen metabolism. Results: Dietary cow ghee relative to soybean oil decreased the activities of cytochrome P450 (CYP) enzymes, CYP1A1, CYP1A2, CYP1B1 and CYP2B1, responsible for activation of carcinogen in liver. Carcinogen detoxification activities of uridinediphospho-glucuronosyl transferase (UDPGT) and quinone reductase (QR) in liver, and γ-glutamyltranspeptidase (GGTP) and QR in mammary tissue were significantly higher in cow ghee fed rats than in soybean oil fed rats. The hepatic GGTP activity decreased on soybean oil diet; while in cow ghee group it remained unaffected. Interpretation & conclusions: Our findings show that dietary cow ghee compared to soybean oil downregulates the enzyme activities responsible for carcinogen activation in liver and upregulates carcinogen detoxification activities in liver and mammary tissues.
Subject(s)
Animals , Cytochrome P-450 Enzyme System/analysis , Cytochrome P-450 Enzyme System/metabolism , Cytochrome P-450 Enzyme System/physiology , Dietary Fats/administration & dosage , Dietary Fats/physiology , Disease Models, Animal , Rats , Soybean Oil/administration & dosage , Soybean Oil/physiologyABSTRACT
Background & objectives Breast cancer is a leading cause of cancer death in women; dietary fat is the one of the factors that influences its incidence. In the present study we investigated the effect of feeding cow ghee versus soybean oil on 7,12-dimethylbenz(a)anthracene (DMBA) induced mammary cancer in rat and expression of cyclooxygenase-2 and peroxisome proliferators activated receptor- γ (PPAR-γ) in mammary gland. Methods Two groups of 21 day old female rats (30 each) were fed for 44 wk diet containing cow ghee or soybean oil (10%). The animals were given DMBA (30mg/kg body weight) through oral intubation after 5 wk feeding. Another two groups (8 each) fed similarly but not given DMBA served as control for the gene expression study. Results In DMBA treated groups, the animal fed soybean oil had higher tumour incidence (65.4%), tumour weight (6.18 g) and tumour volume (6285 mm3) compared to those fed cow ghee (26.6%, 1.67 g, 1925 mm3, respectively). Tumour latency period was 23 wk on soybean oil compared to 27 wk on cow ghee. Histological analysis of tumours showed that the progression of carcinogenesis was more rapid on soybean oil than on cow ghee. The expression of cyclooxygenase-2 was observed only in DMBA treated rats and it was significantly less on cow ghee than on soybean oil. The expression of PPAR-γ was significantly more on cow ghee than on soybean oil. Interpretation & conclusions Our results show that dietary cow ghee opposed to soybean oil attenuates mammary carcinogenesis induced by DMBA; and the effect is mediated by decreased expression of cyclooxygenase-2 and increased expression of PPAR-γ in the former group.