scholarly journals Acute and subacute oral toxicity study on the flavonoid rich fraction of Monodora tenuifolia seed in albino rats

2014 ◽  
Vol 4 (3) ◽  
pp. 194-202 ◽  
Author(s):  
Raphael Chukwuma Ekeanyanwu ◽  
Obioma Uzoma Njoku
Author(s):  
Meenakshi Sundaram Malayappan ◽  
Gayathri Natarajan ◽  
Logamanian Mockaiyathevar ◽  
Meenakumari Ramasamy

Abstract Objectives Madhulai Manappagu – a well-known sastric and widely prescribed Siddha herbal syrup formulation indicated for treating Veluppu Noi (Anaemia especially Iron deficiency Anaemia) has been in day today practice in Tamil Nadu for a quite longer decades. The syrup is a herbal preparation which has a sweet pleasant odour and a palatable taste, contain the juice of pomegranate (Punica granatum L.) as the main ingredient. Though the formulation is a fruit juice, the safety profile of the syrup is not established and is being marketed without toxicological evaluation. The study is aimed at ascertaining the acute and sub-acute toxicity assessment of Madhulai Manappagu in Wistar Albino rats. Methods The acute and sub-acute (28day repeated oral) toxicity studies were performed as per the guidelines mentioned in the Organization for Economic Cooperation and Development (OECD) 423 (adopted on December 2001) and TG 407 (adopted on October 2008) with slight modifications respectively. For acute toxicity study, three female rats were randomly selected as control; three female rats were randomly selected and were administered a single dose of 5,000 mg/kg body weight per oral route. For sub-acute (28day repeated oral) toxicity studies, three doses of test drug MM of 500 mg/kg/day (low dose), 750 mg/kg/day (intermittent dose) and 1,000 mg/kg/day (high dose) were selected for administration. Both sexes of Wistar Albino rats were randomized into four groups of 10 animals each (five males, five females). Group I was kept as control group. Group II, III and IV served as low, intermittent and high doses of MM respectively. Animals were observed for mortality, morbidity, body weight changes, feed and water intake. Haematology, clinical biochemistry, electrolytes, gross pathology, relative organ weight and histopathological examination were performed. Results In the acute toxicity study, rats showed no toxicological signs on behavior, gross pathology and body weight of rats when treated with a single dose of 5,000 mg/kg body weight per oral route. In the subacute (28 days repeated oral) toxicity study, rats have showed no significant changes on behavior, gross pathology, body weight, and hematological and biochemical parameters when treated with Madhulai Manappagu in three different doses. Conclusions The toxicity studies which include both acute and 28 days repeated (subacute) oral toxicity studies, revealed no observed adverse effect level (NOAEL) of Madhulai Manappagu in animals. Thus the safety of the drug in human usage was ensured.


2018 ◽  
Vol 3 (1) ◽  
pp. 15-22
Author(s):  
Sudesh N Gaidhani ◽  
Kandiyoor R Surabhi ◽  
Yalwar R Sanjayakumar ◽  
Paravazhi Radhakrishnan ◽  
Natarajan Thamizhselvam ◽  
...  

2020 ◽  
Vol 23 (15) ◽  
Author(s):  
S. Saradha ◽  
E. Abinaya ◽  
V. Vivek ◽  
D. Prabhu ◽  
Shaleesha A Stanley ◽  
...  

Author(s):  
Deepali Pandey ◽  
Apurva Joshi ◽  
Siva Hemalatha

Objective: Aganosma dichotoma K. Schum (Apocynaceae) has been traditionally used as an Ayurvedic ulcer treatment and the study scientifically validates the antiulcer effect of A. dichotoma ethanol root extract (EAD).Methods: The studies included the isolation, quantification of ursolic acid through HPTLC. Acute and sub-acute toxicity study of EAD for 28 d and antiulcer effect of ursolic acid (50 mg/kg, p. o.), EAD (100, 200 and 400 mg/kg, p. o.) were also evaluated on both the physical (pyloric ligation, PL; cold restrain stress, CRS;) and chemical (absolute ethanol, aspirin, ASP;) induced ulcer in Charles Foster albino rats for 7 d. The various gastric-ulcer parameters, viz. gastric pH, volume, acid-pepsin output, DNA content, H+K+-ATPase activity, mucus content, microvascular permeability, antioxidant enzyme, and gastric histopathological study were performed.Results: The isolated ursolic acid was characterized by NMR and mass spectrometer and quantified through HPTLC in EAD (4.26% w/w). Acute oral toxicity study indicated that LD50 of extract was ≥ 5 g/kg. EAD at the dose of 200 and 400 mg/kg, p. o. reduced the ulcer score in both physical and chemical-induced ulcer models. In PL model EAD (400 mg/kg, p. o.) and ursolic acid (50 mg/kg, p. o.) showed antisecretory property by inhibiting aggressive factors [increase in gastric pH (35.02%, 26.73%), whereas decreased gastric volume (43.55%, 34.35%) and acid-pepsin output (75.23%, 68.81%), respectively]. EAD at 400 mg/kg p. o. showed significant effect on proton pump inhibition while ursolic acid didn’t showed any effect.Conclusion: The effects of EAD were accredited mainly to the offensive mechanism and justify its traditional usage in the treatment of gastric ulcers.


Author(s):  
MANOHAR REDDY ◽  
RAJA SUNDARARAJAN

Objective: The fundamental reason for this examination was to look at the acute and subchronic toxicity studies of chloroform and methanol extracts of Barleria buxifolia Linn. (Acanthaceae) on creature models according to the OECD rules 407 and 425, respectively. Methods: In acute oral toxicity, study a single oral dosages of 5000 mg/kg body weight of chloroform and methanol extracts was given individually to rats and watched them for 2 weeks for the discovery of acute changes and for its mortality any. During acute oral toxicity study period, no mortality was seen without any signs of intense changes. Further, it was executed the subchronic toxicity of extracts. Barleria buxifolia extracts (chloroform and methanol) were independently given every day at dosages of 250 and 500 mg/kg body weight for 90 days to recognize the progressions any at subchronic poisonousness levels. Towards the finish of the experimentation the serum tests of trail creatures were gathered and watched for any progressions in haematological, biochemical and histopathological boundaries Results: All parameters of treated group were shown unaltered changes throughout the study period when compared with that of normal group. The outcomes propose that the oral organization of chloroform and methanol extracts of Barleria buxifolia did not raise any huge poisonous impacts when contrasted with that of control animals. Conclusion: Hence, the extracts may be safe for therapeutic use and as an alternative system of medicine.


2021 ◽  
pp. 29-45
Author(s):  
Uzuazokaro Mark-Maria Agatemor ◽  
Okwesili Fred Chiligue Nwodo

Background and Objective: Data from researches have shown a rise in disease, ill health and death linked with the utilization of herbal products, thereby raising global awareness in the last few years. On that account, the safety and toxicity evaluations of herbal products and preparations was essential. This study evaluated the toxicological profile of Yagari – a herbal mixture. Materials and Methods: Acute oral toxicity (LD50) was carried out in Swiss mice according to Lorke’s method while sub-chronic toxicity study was carried out with 20 adult albino rats which were divided into 4 groups of 5 animals each. Group one served as control and received normal saline while Groups 2 to 4 received 250, 500 and 1000 mg/kg yagari respectively for 28 days. The body weights of the rats were monitored while on day 29, the rats were sacrificed and blood samples and organs were collected for biochemical/hematological analysis and histopathological examination respectively. Results: Results showed that Yagari is not noxious up to 5000 mg/kg following acute oral toxicity study. The sub-chronic toxicity test divulged that Yagari had no serious end results on the biochemical, hematological and histopathological parameters, although the body weight of the animals significantly increased. Conclusion: It was concluded that Yagari is not toxic, still further investigations on a large number of animals are essentially needed to denote safety and efficacy of the herbal formulation.


Planta Medica ◽  
2015 ◽  
Vol 81 (16) ◽  
Author(s):  
ES Cho ◽  
YJ Lee ◽  
JS Park ◽  
J Kim ◽  
NS Kim ◽  
...  

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