فهرست مطالب zaid hameed mahmood

Urtica dioica (UD), as a natural antioxidant, has positive effects on oocyte maturation. This study aimed to investigate the effects of hydro-alcoholic UD extract and retinoic acid on follicular development in an in vitro fertilization (IVF) condition.

A total of 40 female Wistar rats were randomly divided into 5 groups: group 1 received normal saline, group 2 was given 25 mg/kg retinoic acid, group 3 was administered with 100 mg/kg UD extract, group 4 was treated with retinoic acid plus UD extract, and group 5 received 10 mg/kg olive oil. The histomorphometric parameters were analyzed, including the number of follicles, follicular atrophy, fertilized oocytes, 2-cell embryos, dead embryos, and blastocysts.  

Retinoic acid caused a significant increase in the primary, preantral, and atretic follicles and a substantial decrease in the corpus luteum compared with the control group (p<0.001). The number of preantral, antral follicles, and corpus luteum was significantly higher in group 3 compared with group 1 (p<0.001). Moreover, coadministration of UD plus retinoic acid (group 4) significantly reduced the atretic follicles (p<0.05).

Based on the results, UD herbal extract, as a natural antioxidant agent, could reduce the adverse effects of retinoic acid on oocyte maturation in an IVF condition.

In this research, ZnMoO4 nanoparticles was synthesized through novel and fast chemical method. The products were prepared under different irradiation time and power. The shape, size, and crystalline structure have been investigated through Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and X-ray diffraction (XRD) analysis respectively. The optical properties of samples were prepared via UV-Vis analysis. Results confirmed that shape and size of ZnMoO4 nanoparticles could be changed under different synthesis condition. The obtained results from optical properties of prepared ZnMoO4 nanoparticles approved that the prepared nanoparticles have high potential for the photodegradation of organic pollutants. Methylene blue and rhodamine B were applied for investigation phtocatalytic properties of ZnMoO4 nanoparticles. Results showed that methylene blue and rhodamine B were photodegraded under UV irradiation after 90 minutes 92.6% and 82.4% respectively. This excellent performance was due to the suitable band structure of synthesized ZnMoO4 nanoparticles which led to prevention recombination of photo-generated electrons and holes. This work introduces ZnMoO4 nanoparticles as an attractive photocatalyst for removal of organic pollutants from water.