scholarly journals Research on Acute Toxicity and the Behavioral Effects of Methanolic Extract from Psilocybin Mushrooms and Psilocin in Mice

Toxins ◽  
2015 ◽  
Vol 7 (4) ◽  
pp. 1018-1029 ◽  
Author(s):  
Olga Zhuk ◽  
Izabela Jasicka-Misiak ◽  
Anna Poliwoda ◽  
Anastasia Kazakova ◽  
Vladlena Godovan ◽  
...  
Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
GM Avila-Villarreal ◽  
DE Giles-Rivas ◽  
B Aguilar-Guadarrama ◽  
P Castillo-España ◽  
S Estrada-Soto

2016 ◽  
Vol 4 (1) ◽  
pp. 4 ◽  
Author(s):  
Idris Bello ◽  
Abdulmenem Bakkouri ◽  
Yasser Tabana ◽  
Bassel Al-Hindi ◽  
Majed Al-Mansoub ◽  
...  

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Gaëlle S. Nguenang ◽  
Arsène S. M. Ntyam ◽  
Victor Kuete

Lycopersicon esculentum (tomato) is a plant widely used in Africa like food and to solve many health problems. The methanol crude extract of tomato recently demonstrated a good antiproliferative effect on many human cancer cell lines. The aim of this research was to evaluate the acute toxicity and subacute oral toxicity of methanolic extract from leaves of this plant. These toxicities were evaluated based on the OECD (Organization for Economic Cooperation and Development) guidelines. The assay of acute toxicity was performed using a total of 3 female rats, which received a single dose of 5000 mg/kg of methanolic extract via oral gavage. For the subacute toxicity study, 32 Wistar rats (males and females) were used. The groups were treated with three different doses of Lycopersicon esculentum methanolic extract (250, 500, and 1000 mg/kg b.w.) for 28 days and the control group received distilled water. The hematological, biochemical, and histopathological studies were performed after the sacrifice. Single dose of tomato extract caused no toxicity up to a dose of 5000 mg/kg body weight; hence, the median lethal dose (DL50) of leaves of this plant was greater than this value. However, lower toxic effects could be manifested in the long-term treatment at the highest dose (1000 mg/kg) because urea level and total serum proteins significantly increased at a dose of 1000 mg/kg with respect to control. The microscopic observation showed no remarkable pathological changes on all organs in the treated groups compared with the control groups of female and male rats. These results demonstrate that single dose of tomato extract leaves is relatively nontoxic at a dose of 5000 mg/kg b.w. and prolonged use of lower doses (250 and 500 mg/kg) of L. esculentum orally should be encouraged, whereas highest dose (1000 mg/kg) should be avoided.


Author(s):  
Andrew Lalthasanga Ralte ◽  
Phaibiang Lapasam ◽  
Freddy Teilang Nongkhlaw ◽  
Pdiangmon Kyndait ◽  
Zothanpuia

Acer laevigatum is an evergreen tree growing to a height of 10–15 m or more, with a trunk up to 50 cm diameter belonging to the family Sapindaceae. In Mizoram, the decoction of the leaves is used as an external application in sprains. Extraction was carried out by drying the leaves and barks and extracted by using methanol as solvent using the Soxhlet apparatus. Preliminary phytochemical screening was carried out by methanolic extract of both leaves and barks to determine the chemical constituents present in the plant using a different phytochemical test, acute toxicity for leave and bark extract, in-vitro antioxidant activity and in-vivo analgesic activity of barks extract. Phytochemical screening was performed for both extract and it contains glycoside, saponin, phenol, tannin, flavonoid, and steroid. The antioxidant activity test of the methanolic extract of bark extract was performed successfully. In acute toxicity, the LD50 was found that for more than 2000 mg/kg body weight was safe for further uses. The total phenolic content of the bark extract contains 493 ± 0.23 mg of GAE/g and the total flavonoids content of the bark extract was 220 ± 0.034 mg of QE/g. The IC50 value of DPPH free radical scavenging activity was found to be 86.1211 µg/ml and nitric oxide was 75.9 µg/ml. Whereas, in reducing power it was found that the percentage inhibition was increased with an increase in concentration (increase in concen-tration, percentage inhibition was also increased) and reduced Fe3+ (ferricyanide complex) to Fe2+ (ferrous form). Finally, for in-vivo analgesic activity, 4000 mg/kg was more effective than 2000 mg/kg of the bark extract. These results confirm that the methanolic extract of bark of Acer laevigatum possesses antioxidant activity and non-significant or less analgesic activity.


2006 ◽  
Vol 2 (4) ◽  
pp. 463-466 ◽  
Author(s):  
Paul A. Nwafor . ◽  
Memfin Ekpo . ◽  
Tony Waka Udezi . ◽  
Jude Okokon . ◽  
Augustine L. Bassey .

2016 ◽  
Vol 2 (1) ◽  
pp. 32-35
Author(s):  
Nadia Perveen ◽  
Khwaja Zafar Ahmed ◽  
Tehseen Irshad ◽  
Nayab Latif ◽  
Zainab Kaleem ◽  
...  

Objective: Present study was carried out to evaluate acute and subacute hepatotoxicity of Trichodesma indicum (whole plant). Methods: Toxicity study of Trichodesma indicum was carried out in Swiss mice after ingestion of the aqueous methanolic extract, during one day (acute toxicity) and after fifteen days (subacute toxicity). Results: The results showed that the LD50 of the extract was higher than 4000 mg/kg and subacute treatment showed no change in weight of the liver and ALT, ALP, AST, no marked effect on bilirubin, albumin, protein decreased and globulin values increased significantly. Histopathological studies also showed necrosis and excessive vacuolation in maximum dose. Conclusion: So, the extract showed a ladder like dose related hepatotoxicity. This showed that liver function showed mild injury by Trichodesma indicum in this study.


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