@article {1988, title = {Acute and Sub-acute Oral Toxicity Profile of Root Bark Methanol Extract of Carissa Edulis Vahl}, journal = {Pharmacognosy Journal}, volume = {15}, year = {2023}, month = {April 2023}, pages = {253-258}, type = {Original Article }, chapter = {253}, abstract = {

Background: Carissa edulis is widely used in traditional medicine to manage numerous ailments. However, few studies have assessed its toxicity. Therefore, this study aimed to determine acute and sub-toxicity levels of C. edulis methanol extract. Methods: In the acute toxicity probe, a limit test was conducted whereby the extract was given as a solo dose by gavage. The rats were observed for two weeks. The observations included mortality and changes in the general appearance and behavior of the experimental animals. The body weights of the rats were taken weekly. For the sub-acute toxicity probe, the rats received the extract daily at dosages 300, 520, and 900 mg/kg by gavage for 28 days. Body weights were also taken weekly. On day twenty-nine, the weights of the rats were taken, the rats were sacrificed, and blood was collected for biochemical and hematological analysis. Body organs were harvested, and their weights were taken. Results: The results of the acute toxicity probe showed that the extract didn{\textquoteright}t cause mortality or toxicity signs throughout the study duration. The LD50 of the extract was therefore deemed to be above 2,000 mg/kg. The sub-acute toxicity probe results demonstrated that the extract, at all the tested dosages, didn{\textquoteright}t cause mortality or affect the rats{\textquoteright} organ weights, body weights, or hematological and biochemical parameters throughout the study duration. Conclusions: In conclusion, the methanol extract of C. edulis is not toxic since it didn{\textquoteright}t cause mortality or toxicity signs in both acute and sub-acute toxicity probes.

}, keywords = {Biochemical parameters, Body weights, hematological parameters, Organ weights.}, doi = {10.5530/pj.2023.15.36}, author = {Jane Wanja Mbiri and Kenneth Ogila and Patrick Kisangau and Michael Gicheru} } @article {356, title = {Acute and Sub-acute Toxicities of Thai Silkworm Powder (Bombyx mori Linn.) From Three Races in Male Wistar Rats and In vitro Antioxidant Activities}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {May 2017}, pages = {541-545}, type = {Original Article}, chapter = {541}, abstract = {

Background: The silkworm powder from Japanese and Korean races has a high biological activity. However, there was less scientific evidence regarding bioactivities in Thai silkworm races. Objective: This research was interested in toxicity and antioxidant activities of Thai silkworm races. Material and methods: The 5th instar, 3rd day of growth stage of Thai traditional silkworm (Nanglai, Nangnoi and Samrong races) were lyophilized by freeze dryer and ground as silkworm powder. The acute and sub-acute toxicities studies were carried out in male Wistar rats. The antioxidant capacities of silkworm powder were investigated with DPPH, ABTS and FRAP methods. Results: The acute toxicity in rats by single dose oral administration show that the high dose at a concentration of 2,000 mg/kg b.w. did not have toxicity in rats. The sub-acute toxicity in rats by oral administration showed that the high dose concentration at 2,000 mg/kg body weight for 6 weeks had no toxicity in all group either. In addition, the hematological parameters and lipid profiles of treated group and control groups were not significantly different. The antioxidant study showed that silkworm powders were not significant difference in all groups of samples in three assays (DPPH, ABTS and FRAP). However, significant difference had been found in comparison to ascorbic acid (p \< 0.05). Conclusion: Silkworm powder from three races of Thai silkworm did not produce any toxicity in male rats. In addition, the silkworm powder also exhibited antioxidant activities.

}, keywords = {antioxidant activities., hematological parameters, lipid profile, Silkworm, toxicities}, doi = {10.5530/pj.2017.4.87}, url = {/files/PJ-9-4/10.5530pj.2017.4.87}, author = {Surapong Rattana and Teeraporn Katisart and Bunleu Sungthong and Chirapha Butiman} }