@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} } @article {358, title = {Antihyperglycemic Effect of Silkworm Powder, Fibroin and Sericin from Three Thai Silkworm (Bombyx mori Linn.) in Streptozotocin-Induced Diabetic Rats}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {May 2017}, pages = {559-564}, type = {Original Article}, chapter = {559}, abstract = {

Objective: The present study was aimed to investigate the antihyperglycemic activities of Thai silkworm (Bombyx mori Linn.) powder, fibroin and sericin from three races of Thai silkworm including Nangnoi, Nanglai, and Samrong in streptozotocin-induced diabetic rats. Materials and Methods: All rats were daily and orally administered with silkworm powder (5th-instar, 3rd-day), fibroin, and sericin at a dose of 250 mg/kg for 6 weeks. After that, various parameters including body weight, blood glucose, hematological and biochemical parameters were determined. Results: The results revealed that fasting plasma glucose level in 6th week of Nanglai fibroin, Nangnoi fibroin and Nangnoi sericin expressed a better reduction of FPG in diabetic rats compared with diabetic control groups (p\<0.05). All hematological parameters of each group were not different within those values (p\>0.05). In case of blood urea nitrogen, creatinine and alkaline phosphatase value showed that some of treated groups was different from diabetic control (p\<0.05), while all of treated groups showed different in cholesterol and high density lipoprotein value (p\<0.05). Conclusion: Silkworm powders, fibroin and sericin of three races exhibited a therapeutic potential for the reduction plasma glucose level. Treatments of silkworm powder, fibroin and sericin did not have any effect on hematological parameters. Improvement of blood urea nitrogen, creatinine, alkaline phosphatase values and lipid profiles also were also observed in the treatment groups.

}, keywords = {Antihyperglycemic effect, Diabetic rats, Fibroin., Sericin, Silkworm}, doi = {10.5530/pj.2017.4.89}, url = {/files/PJ-9-4/10.5530pj.2017.4.89}, author = {Surapong Rattana and Teeraporn Katisart and Chirapha Butiman and Bunleu Sungthong} }