Myricitrin and bioactive extract of Albizia amara leaves: DNA protection and modulation of fertility and antioxidant-related genes expression.

Autor: Kassem ME; a Department of Phytochemistry and Plant Systematics , National Research Centre , Dokki , Cairo , Egypt., Ibrahim LF; a Department of Phytochemistry and Plant Systematics , National Research Centre , Dokki , Cairo , Egypt., Hussein SR; a Department of Phytochemistry and Plant Systematics , National Research Centre , Dokki , Cairo , Egypt., El-Sharawy R; a Department of Phytochemistry and Plant Systematics , National Research Centre , Dokki , Cairo , Egypt., El-Ansari MA; a Department of Phytochemistry and Plant Systematics , National Research Centre , Dokki , Cairo , Egypt., Hassanane MM; b Department of Cell Biology , National Research Centre , Dokki , Cairo , Egypt., Booles HF; b Department of Cell Biology , National Research Centre , Dokki , Cairo , Egypt.
Jazyk: angličtina
Zdroj: Pharmaceutical biology [Pharm Biol] 2016 Nov; Vol. 54 (11), pp. 2404-2409. Date of Electronic Publication: 2016 Apr 06.
DOI: 10.3109/13880209.2016.1158285
Abstrakt: Context: Albizia species are reported to exhibit many biological activities including antiovulatory properties in female rats and antispermatogenic and antiandrogenic activities in male rats.
Objective: The present study investigates the flavonoids of Albizia amara (Roxb.) B. Boivin (Fabaceae) leaves and evaluates their activity on gene expression of fertility and antioxidant glutathione-S-transferase-related genes of treated female mice in addition to their effect on DNA damage.
Materials and Methods: Plant materials were extracted by using 70% methanol for 48 h, the extract was chromatographed on a polyamide 6S column, each isolated compound was purified by using Sephadex LH-20 column; its structure was elucidated by chemical and spectral methods. Both the leaves extract and myricitrin (200, 30 mg/kg bw/d, respectively) were assayed for their effect on DNA damage in female mice after four weeks treatment using Comet assay. Their modulatory activity on gene expression of fertility (aromatase CYP19 and luteinizing hormone LH) and antioxidant glutathione-S-transferase (GST)-related genes of treated female mice were investigated by real-time PCR (qPCR).
Results: Quercetin-3-O-gentiobioside, myricitrin, quercetin-3-O-α-rhamnopyranoside, myricetin, quercetin and kaempferol were isolated and identified from the studied taxa. Myricitrin and the extract induced low rate of DNA damage (4.8% and 5%, respectively), compared with the untreated control (4.2%) and significantly down-regulated the expression of CYP19 and LH genes and up-regulated GST gene.
Discussion and Conclusion: Our results highlight the potential effect of the leaves extract of Albizia amara and myricitrin as fertility-regulating phytoconstituents with ability to protect DNA from damage and cells from oxidative stress.
Databáze: MEDLINE
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