@article {1881, title = {Study of Sericin Sequences from Bombyx mori as Antiaging through ROS with Molecular Simulation and DPPH Evaluation}, journal = {Pharmacognosy Journal}, volume = {14}, year = {2022}, month = {October 2022}, pages = {632-641}, type = {Research Article}, chapter = {632}, abstract = {

The presence of ROS is associated with aging, which is damage caused by free radical reactions. ROS causes oxidation of low density lipoprotein (LDL), which builds up in plaque and contributes to inflammation. With aldehyde secondary products of lipid peroxidation such as Malondialdehyde (MDA), lipoxygenase, and xanthine oxidase as markers of oxidative stress, oxidized LDL causes endothelial dysfunction and cell apoptosis. The antioxidant 1,1 diphenyl-2-picrylhydrazyl (DPPH) sericin from Bombyx mori was tested in silico and in vitro in this study. The Bombyx mori peptide sequences QAYADYHSDPNGGSA (SP4) and ASSSFDASSA (SP7) had lower Gibbs energy for lipooxygenase (LOX) than native ligands, with values of -23.1044, -21.0056, and -10.3275 kcal/mol, respectively. hydrogen bonding to Gln289, Asp293, and Gly569. While ASSSFDASSA (SP7) has a higher Gibbs energy for xanthine oxidase (XOX), SEASSSTQATTVS (SP 5) has a lower Gibbs energy with values of -20.1839, -17.8952, and -11.8921 kcal/mol, respectively. While the cavity binding of the xanthine oxidase peptide binding SP5 and SP7 is located at the Glu802, Asp872, and Ser876 binding sites, the DPPH test confirmed in vitro that the 10\% sericin Gel had an IC50 of 19.7394 ppm compared to 3.71 ppm ascorbic acid. The findings of the preceding study demonstrate that sericin, as an antioxidant, is one of the candidates for antiaging.

}, keywords = {DPPH., LOX, ROS, Sericin}, doi = {10.5530/pj.2022.14.146}, author = {Fitria Agustina and Fadilah Fadilah and Wimpie Pangkahila and Anak Agung Gde Putra Wiraguna and I Gusti Ayu Sri Mahendra Dewi} } @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} }