@article {1176, title = {Piper pedicellatum C. DC. Leaf Methanol Extract Inhibits Edema and Granuloma and Modulates Mediators and Cytokines in Rats}, journal = {Pharmacognosy Research}, volume = {15}, year = {2023}, month = {October 2023}, pages = {679-686}, type = {Original Article}, chapter = {679}, abstract = {

Background: Piper pedicellatum is an ethnomedicinal plant used in various inflammatory conditions by many ethnic groups and exploration of its therapeutic potentials is imperative. Objective: This study was carried out to assess anti-inflammatory potential of the methanol extract of the plant leaves using in vivo experiments to validate the traditional uses. Materials and Methods: Carrageenan-induced paw edema and Cotton pellet-induced granuloma models were used to investigate into the anti-inflammatory potential of the plant extract in rats at 200 mg/kg and 400 mg/kg dose. Indomethacin (10 mg/kg) is used as reference standard. Serum levels of inflammatory markers and cytokines, hematological and serum hepatic enzyme indices were analyzed in granuloma-induced model. Results: The methanol extract suppressed Carrageenan-induced paw edema significantly at different time intervals. The highest percentage inhibition was observed at 3rd hr after Carrageenan injection, which was 42.67\% and 49.33\% for 200 mg/kg and 400 mg/kg dose of the extract respectively. In granuloma-induced model, the methanol extract at 200 mg/kg and 400 mg/kg dose inhibited exudate formation by 28.58\% and 41.27\%, respectively and inhibition of granuloma tissue was 32.45\% and 43.71\%, respectively along with significant decrement in serum C-reactive protein, Prostaglandin E2, Tumor necrosis factor-α, Interleukin-6 while increases in Interleukin-10 levels. Also, the results showed hematological and serum hepatic enzyme levels were rectified to near normal levels in treated rats. Conclusion: The outcome of the investigation reveals the potential of extract as possible anti-inflammatory agent, which can be develop into therapeutic agent or supplement and also necessitates further pharmacological studies on the plant.

}, keywords = {Cytokines, Edema, Granuloma, Interleukins, Piper pedicellatum C. DC}, doi = {10.5530/pres.15.4.072}, author = {Dev Jyoti Kalita and Kangkan Deka and Ngurzampuii Sailo and Sanjoy Das and Bibhuti Bhusan Kakoti} } @article {897, title = {1,1-Diphenyl-2-picrylhydrazyl Radical and Superoxide Anion Scavenging Activity of Rhizophora mangle (L.) bark}, journal = {Pharmacognosy Research}, volume = {2}, year = {2010}, month = {November 2010}, pages = {279-284}, type = {Original Article}, chapter = {273}, abstract = {

Background: In recent times, many herbal remedies are used to treat variety of ailments. The leaves of Vitex grandifolia is claimed to be effective in the treatment of diabetes mellitus and as a diuretic in the treatment of high blood pressure. However, there are no scientific reports on the therapeutic benefits or toxicity of this plant. This study therefore investigated the effect of prolonged administration of the aqueous extract of the leaves of this plant in Sprague{\textendash}Dawley rats. Methods: The plant leaves (No. FHI 107055) were dried at 40 oC, powdered and extracted at room temperature in water (pH 5.72) by percolation. Extract was dried in vacuo to give a yield of 27.32 \%w/v. The extract, 0.5{\textendash}2 g/kg b. wt. was administered by gastric probe to rats for 14 days. The liver and kidney functions, blood chemistry, histopathologic alterations of vital organs and extract effect on rats b. wt. were investigated. Results: V. grandifolia caused significant increase in the serum electrolytes, creatinine, and liver function enzyme dose dependently compared with the control (P <= 0.001). The extract had no effect on the heart; however, the architecture of the liver, kidney, and lungs were significantly altered in the treated groups compared with the control. The treated rats had significantly reduced body weight compared with the control (P <= 0.001). Major clinical signs observed in the treated groups were polydipsia, polyuria, puffiness of hair, and calmness, which were consistent with increase in dose of the extract. Conclusion: It could be clearly concluded that prolonged administration of the aqueous leaf extract of V. grandifolia at the dose used in this study tends to be toxic to the rats. Its use in folkloric medicine should be with utmost care.

}, keywords = {Edema, Histopathology, Liver function test, Portal infi ltration, Toxicity, Vitex grandifolia}, doi = {10.4103/0974-8490.72322}, author = {Janet Calero S{\'a}nchez and Roberto Faure Garc{\'\i}a and Ma. Teresa Mitjavila Cors} } @article {888, title = {Biochemical and Histologic Changes in Rats after Prolonged Administration of the Crude Aqueous Extract of the Leaves of Vitex grandifolia}, journal = {Pharmacognosy Research}, volume = {2}, year = {2010}, month = {November 2010}, pages = {273-278}, type = {Original Article}, chapter = {273}, abstract = {

Background: In recent times, many herbal remedies are used to treat variety of ailments. The leaves of Vitex grandifolia is claimed to be effective in the treatment of diabetes mellitus and as a diuretic in the treatment of high blood pressure. However, there are no scientific reports on the therapeutic benefits or toxicity of this plant. This study therefore investigated the effect of prolonged administration of the aqueous extract of the leaves of this plant in Sprague-Dawley rats. Methods: The plant leaves (No. FHI 107055) were dried at 40 o C, powdered and extracted at room temperature in water (pH 5.72) by percolation. Extract was dried in vacuo to give a yield of 27.32 \%w/v. The extract, 0.5-2 g/kg b. wt. was administered by gastric probe to rats for 14 days. The liver and kidney functions, blood chemistry, histopathologic alterations of vital organs and extract effect on rats b. wt. were investigated. Results: V. grandifolia caused significant increase in the serum electrolytes, creatinine, and liver function enzyme dose dependently compared with the control (P <= 0.001). The extract had no effect on the heart; however, the architecture of the liver, kidney, and lungs were significantly altered in the treated groups compared with the control. The treated rats had significantly reduced body weight compared with the control (P <= 0.001). Major clinical signs observed in the treated groups were polydipsia, polyuria, puffiness of hair, and calmness, which were consistent with increase in dose of the extract. Conclusion: It could be clearly concluded that prolonged administration of the aqueous leaf extract of V. grandifolia at the dose used in this study tends to be toxic to the rats. Its use in folkloric medicine should be with utmost care.

}, keywords = {Edema, Histopathology, Liver function test, Portal infi ltration, Toxicity, Vitex grandifolia}, doi = {10.4103/0974-8490.72322}, author = {Mbang A Owolabi and Moyosola M Abass and Promise M Emeka and Smith I Jaja and Martin Nnoli and Benjamin O.S Dosa} }