@article {1161, title = {Evaluation of Protective Effects of Polyphenols of the Marine Brown Alga Ecklonia cava against Potassium Bromate Induced Nephrotoxicity in Rats}, journal = {Pharmacognosy Research}, volume = {15}, year = {2023}, month = {June 2023}, pages = {544-550}, type = {Original Article }, chapter = {544}, abstract = {

Background: Ecklonia cava is a kelp (brown algae) genus belonging to Lessoniaceae with plenty of Eckol-type phlorotannins. It exhibits antioxidant, anti-inflammatory, and antibacterial activity. Objectives: This study investigated Ecklonia cava (EC) polyphenols for their protective effects against KBrO3-induced nephrotoxicity in rats. Materials and Methods: The polyphenolic fraction was isolated from EC. Group, I was control (untreated), and group II was administered KBrO3 (135 mg/kg b.w) intragastric for four weeks. Group III was administered ECPP (200 mg/kg b.w) concurrently with KBrO3 (135 mg/kg b.w) orally, and Group VI was administered Rutin (100 mg/ kg b.w) along with KBrO3 (135 mg/kg b.w) orally. The protective effects of ECPP on KBrO3-induced nephrotoxicity in rats were assessed for the biochemical parameters of serum, various antioxidant enzymes, and histopathological changes in kidneys. Results: The level of serum of Blood Urea Nitrogen (BUN), uric acid, and creatinine was suggestively augmented (p\<0.001) when treated by KBrO3. The activity of antioxidant enzymes, superoxide dismutase, catalase, glutathione peroxidase, and FRAP (ferric ion reducing antioxidant parameter) were diminished (p\<0.001). At the same time, lipid peroxidation and nitric oxide were raised (p\<0.001) with KBrO3 treatment in the kidneys. In addition, the protein carbonyl level was amplified (p\<0.001) with KBrO3 administration. Histological studies presented renal damage in KBrO3-treated animals where tissue injury was abridged in ECPP pretreatment groups. Conclusion: These results suggest that ECPP functions as an antioxidant in vivo by scavenging reactive oxygen species, which helps preclude oxidative renal injury in rats treated with KBrO3.

}, keywords = {Antioxidant, Ecklonia cava, Nephroproductive activity, Polyphenols, Potassium bromate.}, doi = {10.5530/pres.15.3.057}, author = {Moqbel Ali Moqbel Redhwan and Suman Samaddar and Hariprasad MG and Sumaia Abdulbari Ahmed Ali Hard and Gitima Deka and Anyembe Godfrey} } @article {264, title = {Saponin of Momordica cymbalaria Exhibits Anti-Inflammatory Activity by Suppressing the Expression of Inflammatory Mediators in Lipopolysaccharide-Stimulated RAW264.7 Macrophages}, journal = {Pharmacognosy Research}, volume = {11}, year = {2019}, month = {February,2019}, pages = {8-13}, type = {Original Article}, chapter = {8}, abstract = {

Background: Inflammation is an intricate biological process that commonly occurs in response to pathologic stimuli, and natural products have potential in healing inflammation. However, the anti-inflammatory of Momordica cymbalaria is not evaluated yet. Objectives: The anti-inflammatory mechanism of saponin of M. cymbalaria (SMC) was investigated in bacterial lipopolysaccharide (LPS)-stimulated RAW264.7 mouse macrophage cell line. Materials and Methods: The cytotoxicity of SMC on RAW264.7 cells was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay at 500, 250, 125, 62.5, 31.25, 15.625, 7.812, 3.906, and 1.953 μg/mL. For anti-inflammatory activity, RAW264.7 cells were stimulated with Escherichia coli LPS (1 μg/ml) in the presence or absence of SMC (50 μg/ml) for 16{\textendash}24 h. Western blotting was carried to comprehend the expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide (NO) synthase (iNOS) whereas expressions of the pro-inflammatory cytokines (interleukin [IL]-6, IL-1β, and tumor necrosis factor-alpha [TNF-α]) and prostaglandin E2 (PGE2) were studied by enzyme-linked immunosorbent assay (ELISA). NO production was estimated by Griess{\textquoteright}s method. Salicylic acid, a nonsteroidal anti-inflammatory drug, was used as a standard. Results: The saponin did not exert significant cytotoxicity on RAW264.7 cells. Western blot analysis revealed reduction in COX-2 and iNOS expression on SMC treatment. Production of PGE2, IL-6, IL-1β, and TNF-α was also found to be reduced when analyzed by ELISA. NO levels were also lowered. Conclusion: The findings suggest that the SMC possesses potential anti-inflammatory activity by suppressing the expression of inflammatory mediators, COX-2, iNOS, PGE2, and NO, and the cytokines in LPS-stimulated RAW264.7 cells.

}, keywords = {Cyclooxygenase-2, Inducible nitric oxide synthase, Interleukin-1 beta, Momordica cymbalaria, Prostaglandin E2, Tumor necrosis factor-alpha.}, doi = {10.4103/pr.pr_130_18}, author = {Suman Samaddar and Raju Koneri} } @article {134, title = {Saponin of Momordica cymbalaria Exhibits Anti-Inflammatory Activity by Suppressing the Expression of Inflammatory Mediators in Lipopolysaccharide-Stimulated RAW264.7 Macrophages}, journal = {Pharmacognosy Research}, volume = {11}, year = {2011}, month = {May 2011}, pages = {8-13}, type = {Original Article}, chapter = {8}, abstract = {

Background: Inflammation is an intricate biological process that commonly occurs in response to pathologic stimuli, and natural products have potential in healing inflammation. However, the anti-inflammatory of Momordica cymbalaria is not evaluated yet. Objectives: The anti-inflammatory mechanism of saponin of M. cymbalaria (SMC) was investigated in bacterial lipopolysaccharide (LPS)-stimulated RAW264.7 mouse macrophage cell line. Methods: The cytotoxicity of SMC on RAW264.7 cells was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay at 500, 250, 125, 62.5, 31.25, 15.625, 7.812, 3.906, and 1.953 μg/mL. For anti-inflammatory activity, RAW264.7 cells were stimulated with Escherichia coli LPS (1 μg/ml) in the presence or absence of SMC (50 μg/ml) for 16{\textendash}24 h. Western blotting was carried to comprehend the expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide (NO) synthase (iNOS) whereas expressions of the pro-inflammatory cytokines (interleukin [IL]-6, IL-1β, and tumor necrosis factor-alpha [TNF-α]) and prostaglandin E2 (PGE2) were studied by enzyme-linked immunosorbent assay (ELISA). NO production was estimated by Griess{\textquoteright}s method. Salicylic acid, a nonsteroidal anti-inflammatory drug, was used as a standard. Results: The saponin did not exert significant cytotoxicity on RAW264.7 cells. Western blot analysis revealed reduction in COX-2 and iNOS expression on SMC treatment. Production of PGE2, IL-6, IL-1β, and TNF-α was also found to be reduced when analyzed by ELISA. NO levels were also lowered. Conclusions: The findings suggest that the SMC possesses potential anti-inflammatory activity by suppressing the expression of inflammatory mediators, COX-2, iNOS, PGE2, and NO, and the cytokines in LPS-stimulated RAW264.7 cells.

}, keywords = {Cyclooxygenase-2, Inducible nitric oxide synthase, Interleukin-1 beta, Momordica cymbalaria, Prostaglandin E2, Tumor necrosis}, doi = {10.4103/pr.pr_130_18}, author = {Suman Samaddar and Raju Koneri} }