@article {395, title = {Chemical Constituents and Bioactivities of Glinus Oppositifolius}, journal = {Pharmacognosy Research}, volume = {7}, year = {2015}, month = {June 2015}, pages = {138-147}, type = {Original Article }, chapter = {138}, abstract = {

Objectives: To isolate the secondary metabolites from the dichloromethane (DCM) extracts of Glinus oppositifolius; to test for the cytotoxicity of a new triterpene, oppositifolone (1); and to test for the hypoglycemic, analgesic, and antimicrobial potentials of 1, DCM and aqueous leaf extracts of G. oppositifolius. Methods: The compounds were isolated by silica gel chromatography and identified by nuclear magnetic resonance spectroscopy. The cytotoxicity potential of 1 was tested using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Triterpene 1, DCM, and aqueous leaf extracts were tested for hypoglycemic potential using the oral glucose tolerance test; analgesic potential using the tail-flick assay, and antimicrobial potential using the disc diffusion method. Results: The DCM extracts of G. oppositifolius afforded 1, squalene, spinasterol, oleanolic acid, phytol, and lutein from the leaves; squalene and spergulagenin A from the stems; and spinasterol from the roots. Triterpene 1 was cytotoxic against human colon carcinoma 116 with an IC50 value of 28.7 but did not exhibit cytotoxicity against A549. The aqueous leaf extract at 200 mg/kg body weight (BW) exhibited hypoglycemic activity with a pronounced \% blood glucose reduction of 70.76\% {\textpm}17.4\% within 0.5 h after introduction. The DCM leaf extract showed a lower \% blood glucose reduction of 18.52\% {\textpm}13.5\% at 200 mg/kg BW within 1.5 h after introduction, while 1 did not exhibit hypoglycemic activity. The samples did not exhibit analgesic property and were inactive against multiple drug resistant bacterial pathogens. Conclusion: The compounds responsible for the hypoglycemic activity of G. oppositifolius which are fast acting (0.5 h) are found in the aqueous leaf extract.

}, keywords = {3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide assay, Analgesic, Antimicrobial, Cytotoxic, Glinus oppositifolius Linn, Hypoglycemic, Molluginaceae, Oppositifolone}, doi = {10.4103/0974-8490.150520}, author = {Consolacion Y. Ragasa and Esperanza C. Cabrera and Oscar B. Torres and Adiel Inah Buluran and Dinah L. Espineli and Dennis D. Raga and Chien-Chang Shen} } @article {896, title = {Effects of the Oral Administration of Nonpolar Extract from Ardisia squamulosa Presl (Myrsinaceae) Leaves on Spermatogenesis in Rats}, journal = {Pharmacognosy Research}, volume = {3}, year = {2011}, month = {November,2011}, pages = {260-265}, type = {Original Article}, chapter = {260}, abstract = {

Background: Several Ardisia species have been found to possess numerous bioactivities but their reproductive toxicity has been poorly explored. In the present study, the effects of the leaf hexane extract of Philippine indigenous Ardisia squamulosa on epididymal sperm count, \%viability and \%aberration of sperms and weights of seminal vesicle, cauda epididymis, and testes in addition to the weights of liver, kidney, and body were evaluated. Methods: The extracts at daily dose levels of 1, 10, and 100 mg/Kg BW in 10\% polysorbate-80 in corn oil were administered by gavage for 8 successive days to 8-10 weeks old male SD rats and sacrificed after 9 days. Daily body weights and final organ weights were measured. Sperm from the cauda epididymis was extracted and measured according standard sperm parameters (sperm count, morphology, viability and membrane integrity). Results: Significant findings were the decline of left epididymal sperm count to testis weight ratio and increase in \%sperm morphological aberration from both cauda epididymis obtained with the 10 mg/Kg BW dose. Conclusion: The hexane extract from Ardisia squamulosa had significant effect on sperm count but with negligible effect on sperm morphology and viability.

}, keywords = {Myrsinaceae, Sperm count, Sperm morphology, Spermatogenesis}, doi = {10.4103/0974-8490.89747}, author = {Dennis D. Raga and Glorina N. Pocsidio and Annabelle A. Herrera} }