Introduction: Sacoglottis gabonensis (Baille) Urban (Humiriaceae) is a medicinal plant used in the treatment of Buruli ulcer in Ivory Coast. To ensure its effect over a long period of use, the subchronic toxicity of the total aqueous extract of S. gabonensis stem bark (ETASg) in rats was evaluated. Methods: 80 rats were homogeneously distributed in 4 lots of 20 rats each, including 10 males and 10 females. ETASg was administered daily orally for 90 days for 2 mL/100 g body weight (b.w.) rats at doses of 3.5; 35 and 350 mg/kg b.w. The control group received distilled water. A venous blood sample is taken every 30 days for 90 days to determine serum biochemical parameters.

Objective: The effect of the hydro-alcoholic extract of Terminalia mantaly H. Perrier (Combretaceae) was evaluated on liver tissue and biochemical markers in Rats were analyzed. Methods: The animals were divided into four groups of 10 animals each (5 males and 5 females). Group1 received 1 mL/100g body weight of distilled water and served as control. Groups 2, 3 and 4 received extract doses of 150,300 and 600 mg/kg body weight, respectively. Blood sampling was carried out to evaluate various biochemical parameters. Results: Biochemical analyzes showed significant reductions in ALT, AST, total and conjugated bilirubin, glucose, total protein, TG, total cholesterol in the treated rats depending on changes in time. On the other hand, this study showed a significant elevation of serum ALP in treated rats with doses of 300 and 600 mg / kg compared to controls and a significant increase of GGT in treated rats with doses of 150 and 600 mg / kg during the third and fourth week. Histopathological study revealed no significant damage in rats liver tissues in groups treated with the hydro alcoholic extract of Terminalia mantaly when compared with the control groups. Conclusion: These results revealed that the hydro-alcoholic extract of Terminalia mantaly, when used in the dose range evaluated in this study, may be well tolerated by the liver.

The present study investigated the preventive effect of Trema guineensis on serum concentrations of vitamins A, D and E during hepatotoxicity in rat. The leaves of Trema guineensis collected from Abobo in the district of Abidjan were used for the preparation of the aqueous extract by decoction and ethanolic extract by maceration. Then, healthy adult Wistar albino rats were used for the experimentation. The animals were pretreated with the extracts at the doses of 100 and 200 mg/kg of body weight by oral route one hour before CCl4 intraperitoneal injection for seven days. The administration of CCl4 resulted in a significant decrease of vitamins A, D and E rates in the serum while the pretreatment by the extracts increased the concentrations of these vitamins. The extracts of Trema guineensis would prevent vitamins A, D and E deficiency in serum due to hepatic injury.

Aims: Arachis hypogaea (peanuts) is widely used in food worldwide. Therapeutic use of various parts of this plant has been mentioned in many traditional medicinal systems. The aim of the present study was to evaluate subacute toxicity of methanolic and aqueous extracts of peanuts hulls. Place and Duration: Laboratory of Biochemical Pharmacodynamics, Faculty of Biosciences, University Félix Houphouët-Boigny, from March to June 2018. Methodology: Serial extraction was done using methanol and water as solvents. The study was evaluated by orally daily doses of extracts 300, 600 and 1200 mg/kg. The treatment for 28 days concerned seven groups of animals, the control group and six treated groups. Each group included six animals, 3 males and 3 females. Animals of control group didn’t have any treatment. Animals were observed for general behavioural and signs of abnormalities during the experiment. After all treatments, blood was collected for haematological and biochemical analysis. Liver, kidney, and heart were removed, weighed for histological study. Results: The results showed that, there were not any significant (p˃0.05) changes in both the absolute and relative organ weights between the control and the test groups. Biochemical parameters were statistically equal in all groups. In addition, both extracts did not induce any significant effect on RBC and indices relating to it (HGB, PCV, MCV, MCH and MCHC) throughout the experimental period. But, there was a decrease (16.33±1.68) on WBC with methanolic extract compared to control (13.79±2.73). Histological examination of the liver, kidneys, and the heart showed normal organisation and structure of heart, kidneys and liver. Conclusion: It appears that the methanolic and aqueous extracts of hull of Arachis hypogaea did not produce any toxicity in oral subacute toxicity study. However, further studies are needed to confirm long term toxicities.

Objective: The aim of this study is to determine the pharmacological effects of Rauvolfia vomitoria leaves on the sexual activity of animal model (male rat) Methods: Acute toxicity was performed according to OECD Guideline 423, by a dose limit of 2000 mg /kg body weight. The observations (during 14 days) focused on the number of deaths, convulsions, sleep and coma. Study of sexual activity has been realized by using 20 male rats, distributed in 4 lots of 5 animals. Group 1 treated with distilled water, group 2 treated with 5 mg/kg B.W. of sildenafil citrate and the other two batches received respectively the doses 500 and 1000 mg/kg of the aqueous extract of Rauvolfia vomitoria. Females in estrus state (in heat) were introduced for a period of 30 minutes. During this period, parameters of sexual behavior were recorded. At the end of the 8-day treatment, organs such as penis testicles, seminal vesicles, prostate, epididymis and elevator muscle were removed. These organs were studied in order to determine pharmacological effects of aqueous extract of Rauvolfia vomitoria. Results: The aqueous extract of Rauvolfia vomitoria showed no evidence of single dose toxicity (2000 mg/kg) when studying acute toxicity. Ride latency time, coitus latency time and ejaculation latency time was significantly decreased (P<0.001) with regard to negative control (distilled water). Ride frequency, coitus fraquency and ejaculation frequency was significantly increased (P<0.001) with regard to negative control (distilled water). No significant difference (P˃0.05) has been recorded on organ androgeno-dependant. Conclusion: Aqueous extract of R. vomitoria has sexual stimulating activity or an aphrodisiac potential which could justify its traditional use. The aphrodisiac potential is higher at the dose of 1000 mg/kg b.w .