@article {1607, title = {Antioxidant and Hepatoprotective Activity of Ethanol Extract of Annona cherimola Mill. On Paracetamol-Induced Liver Toxicity in Rats}, journal = {Pharmacognosy Journal}, volume = {13}, year = {2021}, month = {July 2021}, pages = {874-882}, type = {Original Article}, chapter = {874}, abstract = {

Background: Annona cherimola Mill. (A. cherimola) is mainly characterized by its antioxidant and cytoprotective properties due to their content of phenolic compounds. Objective: To evaluate antioxidant and hepatoprotective activity of ethanol extract of leaves from A. cherimola against induced toxicity by paracetamol in rats. Methods: Amount of total phenolics compounds of ethanol extract of A. cherimola Mill. was determined by the Folin-Ciocalteu method and antioxidant activity was evaluated by DPPH method. Three doses of the ethanol extract of leaves of A. cherimola (250, 500 and 750 mg/Kg/day) were administered to rats and it was evaluated biochemical blood parameters: aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) were measured, liver tissue was removed for histopathological analysis. Results: Ethanol extract of leaves from A. cherimola had 41.26 mg GAE/g extract and antioxidant DPPH Scavenging Activity had 85.51\%. A. cherimola reduced blood levels of ALT, AST and ALP, compared to control group Paracetamol, ethanol extract, being more effective at doses of 750 mg/Kg/day. Histopathological evaluation suggested that A. cherimola decreased hepatic necrosis and degenerative process induced by paracetamol. Conclusions: Hepatoprotective activity of ethanol extract of leaves of A. cherimola was demonstrated, being hepatoprotective activity dose dependent and the mechanism may involve antioxidant activity and total polyphenols found in extract of this plant.

}, keywords = {Antioxidants, DPPH, Liver, Paracetamol, Rat}, doi = {10.5530/pj.2021.13.112}, author = {Carmen R. Silva-Correa and V{\'\i}ctor E. Villarreal-La Torre and Jos{\'e} L. Cruzado-Razco and William Antonio Sag{\'a}stegui- Guarniz and Mar{\'\i}a V. Gonz{\'a}lez-Blas and Anabel D. Gonz{\'a}lez-Siccha and Abhel A. Calder{\'o}n-Pe{\~n}a and Cinthya L. Aspajo- Villalaz and Luz M. Guerrero-Espino and Jorge Del Rosario-Ch{\'a}varri and Julio Hilario-Vargas} } @article {1358, title = {Potential Activity of Medicinal Plants as Pain Modulators: A Review}, journal = {Pharmacognosy Journal}, volume = {13}, year = {2021}, month = {January 2021}, pages = {248-263}, type = {Review Article}, chapter = {248}, abstract = {

This review aims to demonstrate the relevance that medicinal plants and their promising results have in prevention and treatment of pain. The neurophysiological bases of pain have been analyzed and the potential mechanisms of action have been proposed, it has also been determined that the main experimental models used for the evaluation of the analgesic potential are: acetic acid-induced writhing test, formalin test, hot-plate test, capsaicin-induced nociception, cinnamaldehyde-induced nociception, glutamate-induced nociception, tail{\textendash}flick test and tail immersion test. There are countless medicinal plants with potential analgesic activity, in some of them main responsible compounds for the activity are flavonoids (vitexin, quercetin, naringenin, astragalin, eupatilin), alkaloids (scotanamine B, bullatine A, S-(+)- dicentrine, stephalagine, lappaconitine), terpenoids (p-cymene, thymol, menthol, citronellol, myrcene, carvacrol, linalool) and saponins (siolmatroside I, cayaponoside D, cayaponoside B4, cayaponoside A1); however, all studies have only been carried out up to pre-clinical stages. Therefore, it is recommended to carry out kinetic studies of the most remarkable natural compounds, evaluate mixtures of active compounds for diminishing doses to avoide possible side effects, and continue with clinical studies of medicinal plants whose safety has already been reported.

}, keywords = {Analgesic, Antinociceptive, Extract, Natural product, Pain}, doi = {10.5530/pj.2021.13.35}, author = {Carmen R Silva-Correa and Jorge L Campos-Reyna and V{\'\i}ctor E Villarreal-La Torre and Abhel A Calder{\'o}n-Pe{\~n}a and Mar{\'\i}a V Gonz{\'a}lez Blas and Cinthya L Aspajo-Villalaz and Jos{\'e} L Cruzado-Razco and William Antonio Sag{\'a}stegui- Guarniz and Luz M Guerrero-Espino and Julio H} }