scholarly journals In vivo immunomodulatory effects of the methanolic leaf extract of Gymnema sylvestre in Swiss albino mice

2015 ◽  
Vol 67 (2) ◽  
pp. 561-570 ◽  
Author(s):  
Laxmi Ahirwal ◽  
Siddhartha Singh ◽  
Manish Dubey ◽  
Vandana Bharti ◽  
Archana Mehta ◽  
...  

In the present study we performed a comparative phytochemical analysis of the immunomodulating activities of the methanol leaf extract of Gymnema sylvestre (MLEGS) in Swiss albino mice. The phytochemical screening conducted on MLEGS revealed the presence of several phytoconstituents, including saponins, alkaloids, glycosides, phenols, tannins, and flavonoids. Immunomodulatory activities were determined by hemagglutination antibody (HA) titer and delayed-type hypersensitivity (DTH) tests for determining specific and non-specific immune responses. Flow cytometric techniques were performed for the estimation of B lymphocytes (CD3 and CD19) and Th2 cytokines (IL-2, IFN-? and IL-4). The response produced by oral administration of MLEGS elicited a significant reduction in a dose-related manner in the primary and secondary antibody response and DTH response. The response produced by oral administration of MLEGS elicited significant reduction in a dose-related manner in the primary and secondary antibody and DTH responses, with maximum reduction observed at 200 mg/kg-body wt. The maximal reductions in the production of CD3, CD19, IL-2, IFN-? and IL-4 were 31.59, 32.12, 29.51, 32.45 and 33.53%, respectively, at 200 mg/kg body weight. This study demonstrates that G. sylvestre exerts immunosuppressive effects on the components of the immune system of mice, and points to its significant immunomodulatory potential.

2021 ◽  
Vol 12 (2) ◽  
pp. 122-128
Author(s):  
S.M. Babangida ◽  
G.J. Sow ◽  
D.M. Shehu

A research was conducted to investigate the haematological effects of ethanolic leaf extracts of Senna occidentalis on Swiss albino mice infected with 0.2 ml of Plasmodium berghei infected blood. Fifteen (15) mice weighing between 140-260g were assigned into five study groups of three mice each. The first group is treated with 0.2 mL of normal saline (drug free control). Group 2, 3, 4 were treated with 100, 200, and 400mg/kg of theethanolic leaf extract respectively while group 5 received 10mg/kg of chloroquine phosphate. All doses were administered orally. The results obtained were analyzed using Analysis of Variance with Duncan’s Multiple Range Test to separate the means. The result of the preliminary phytochemical analysis revealed the presence of alkaloids, saponins, cardiac glycosides, diterpenoids, flavonoids, steroids, tannins, Triterpenoids, carbohydrates and proteins. The level of parasite suppression ranges from 35% to 75% and the activity increased with increase in concentration of the extracts (dose dependent). The extracts were found to increase the level of some haematological parameters such as Red Blood Cells, White Blood Cells and Haemoglobin. The effect is concentration dependent, increases with increase in concentration. Thus, the anti plasmodial efficacy of the leaf extract of S. occidentalis on P. berghei is confirmed. It is recommended that , 400 mg/kg leaf ethanolic extracts of S. occidentalis couldbe use in the treatment of malarial fever.


2019 ◽  
Vol 24 ◽  
pp. 2515690X1983334 ◽  
Author(s):  
Meseret Yigzaw Teferi ◽  
Mohammedbirhan Abdulwuhab ◽  
Jibril Seid Yesuf

The leaf of Osyris quadripartita is traditionally used for the management of diarrhea in different parts of Ethiopia. However, its use has not been scientifically validated for its efficacy. The aim of this study was to investigate antidiarrheal activity of hydroalcoholic leaf extract of O. quadripartita in mice models. Different doses of the methanolic leaf extract of O. quadripartita (100, 200, and 400 mg/kg) were tested for antidiarrheal activity using castor oil–induced diarrhea, enteropooling, and gastrointestinal motility models in Swiss Albino mice. The activities of the extract at different doses were compared with standard drugs and negative control groups of mice. The extract at all tested doses resulted in significant reduction ( P < .01) in number of wet feces, whereas significant reduction ( P < .01) in frequency of defecation in castor oil–induced diarrhea was seen at a dose of 400 mg/kg. It also showed a dose-dependent and significant reduction of volume of intestinal content in the enteropooling model at all tested doses and the observed results in 200 and 400 mg/kg were better than the standard drug, loperamide. However, significant antimotility effect was not observed at any of the tested doses. From these results we can conclude that methanolic leaf extract of O. quadripartita showed antidiarrheal activity.


2019 ◽  
Vol 24 ◽  
pp. 2515690X1989195
Author(s):  
Jemal Abdela

Traditionally people used Dodonaea viscosa for the treatment of various ailments, including diarrhea. Therefore, this study was aimed to evaluate the antidiarrheal activity of the 80% methanolic leaf extract of D viscosa against castor oil-induced diarrhea in mice models. Different doses of 80% methanolic leaf extract of D viscosa (100, 200, and 400 mg/kg) were evaluated for their antidiarrheal activities using castor oil–induced diarrhea, gastrointestinal transit, and enteropooling models in Swiss albino mice. At all test doses, the plant extract showed significant ( P < .05) inhibition in the frequency of defecation of wet feces and total fecal output as compared to the control group. Similarly, at all dose ranges used the plant extract demonstrated significant ( P < .05) reduction in an intraluminal fluid accumulation as compared to the untreated group. Besides, at higher doses, the plant extract also indicated significant ( P < .05) antimotility activity in comparison with the control. In conclusion, these findings illustrated that the 80% methanolic leaf extract of D viscosa supported the traditional claim of antidiarrheal activity of the plant though further investigations are warranted.


2018 ◽  
Author(s):  
Gebreselassie Addisu Tilaye ◽  
Muluken Fekadie Zerihun ◽  
Kasaw Adane Chuffa ◽  
Mahelet Arayaselassie ◽  
Daniel Seifu

AbstractLiver plays a central role in the metabolism of drugs. Drug clearance and transformation exposes liver to toxic injury. Antitubercular drugs have been found to be hepatotoxic and potentially lead to drug-induced liver injury. Isoniazid is one of the most hepatotoxic first line antitubercular drugs. Conventional drugs used in the treatment of liver disease are often inadequate and a search for supplementation or alternative drugs for the treatment of hepatic damage is indispensible. Therefore our study aims to investigate the hepatoprotective potential of Vernonia Amygdalina Del (bitter leaf) extract against Isoniazid-induced liver injury in Swiss Albino Mice. Treatment of Mice orally with Vernonia Amygdalina Del extract at dose of 250mg/kg and 375 mg/kg significantly lowered (P<0.05) the serum level of liver enzymes in Isoniazid pretreated mice. The hepatoptotective activity of the extract found to be comparable with the standard drug, Silymarin (100 mg/kg, P.o.). Moreover, treatment with the extract significantly alleviated Isoniazid induced hepatic injury as supported by the photomicrographs of liver section of mice. The data shows aqueous Vernonia Amygdalina Del extract has a very promising hepatoprotective potential against isoniazid-induced liver injury.


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