زهرا خدابنده

Sodium polyacrylate is a material with a high potential for water and moisture absorption. In this study, the effects of this material on the rate of embryo development and the expression of apoptosis-related and antioxidants genes in the blastocyst was evaluated. Adult female mice were superovulated by injection of pregnant mare serum gonadotropin (PMSG) and human chorionic gonadotropin (hCG) and after placing beside adult male mice, zygotes were harvested from oviducts and transferred into media containing 0, 5, 25, and 50 μg/ml sodium polyacrylate. Zygotes were cultured towards the blastocyst stage and the rate of embryo development was assessed. Expression of intended genes were evaluated by real time RT-PCR. One-way analysis of variance (ANOVA) and Duncan's post hoc toast were used to determine the differences between the means of the groups. The rate of blastocysts was significantly lower in 50 μg/ml compared to the control group (P<0.05). The expression of Bcl-2 increased significantly in 5 μg/ml in comparison to the control group and decreased significantly in 50 μg/ml compared to 5 and 25 μg/ml (P<0.05). The expression of Bax/Bcl-2 and Caspase-3 in 50 μg/ml increased significantly in comparison to 0, 5, and 25 μg/ml (P<0.05). Therefore, the high concentration of sodium polyacrylate has an adverse effect on the embryo through apoptosis system.

 The aim of this study was to evaluate the effect of taurine and curcumin on in vitro fertilization (IVF) in female mice treated with acrylamideand and its effect on malondialdehyde (MDA) concentration and total antioxidant capacity (TAC).

 A total of 48 adult female NMRI mice were randomly divided into 6 groups, including control, curcumin 200 mg / kg, taurine 150 mg / kg, acrylamide 5 mg / kg, acrylamide 5 mg / kg + curcumin 100 and 200, acrylamide 5 mg / kg + Taurine 75 and 150 mg / kg.  The drugs were administered orally for 35 days, and then IVF rate, MDA and TAC concentrations were examined in each group.  

 The results showed a significant decrease in oocyte, fertilization percentage, 2, 4 and 8 cell, Compact and blastocytes embryos in the acrylamide group compared to the control (P<0.05). In acrylamide group, MDA concentration increased and TAC showed a significant decrease compared to other groups (P<0.05). There was a significant increase in oocyte count and fertilization percentage in taurine group compared to the control (P<0.001). A significant increase in the above parameters was observed in the acrylamide + taurine group at a dose of 150 mg / kg compared to the acrylamide group (P<0.05). Percentage of fertilization and embryos of 2, 4 and 8 cells, Compact and blastocytes in the curcumin group showed a significant decrease compared to the control (P<0.05).

 The results indicate that taurine has a better performance in reducing the side effects of acrylamide than curcumin. Since curcumin can prevent IVF, it should be used with more caution at the beginning of pregnancy.

A semi-classical optimization model is introduced for controlling the high-order harmonic generation process and extending the cutoff frequency. This method is capable of defining the driving laser shape interact with the F2 molecule for maximizing the cutoff frequency properly. This optimization procedure is evaluated by examining the high harmonic spectrum from the F 2 molecule irradiated by a two-color laser field. High harmonic spectrum is done using time-dependent density functional theory in a three-dimensional space. The results showed that adding two driving laser pulses with optimization could enhance the cutoff frequency by 96% compared to two driving laser pulses without optimization. In addition, this model for the F2 molecule is capable of reducing the output attosecond pulse duration from 200 as not optimized two-color laser to 135 as the optimized two-color laser.

Docetaxel is beneficial in oocyte cryopreservation.

The effect of docetaxel, on the survival, fertilization rate and mRNA expression of apoptosis-related genes of vitrified mature oocytes was investigated.

Mature oocytes were divided into eight experimental groups, including I) control, II) docetaxel, III) docetaxel + cryoprotectant agent 1 (CPA1), IV) docetaxel + CPA2, V) docetaxel + vitrification 1 (Vit1), VI) docetaxel + Vit2, VII) Vit1, and VIII) Vit2. The survival and fertilization rates, and the mRNA expression level of Bcl-xl, Bax and caspase-3 as apoptosis-related genes were evaluated.

The survival rates in Vit1, and Vit2 groups were significantly lower than in the control group (P<0.05). The fertilization rates in docetaxel + Vit1, docetaxel + Vit2, Vit1, and Vit2 were significantly lower than the control, docetaxel, and related groups using docetaxel and CPAs. Bax expression was significantly increased in groups which oocytes vitrified. Also, its expression in the Vit2 group increased significantly in comparison to the docetaxel + Vit2 group. The expression of the Bcl-xl gene was downregulated in docetaxel + CPA2, docetaxel + Vit2 and Vit2 compared to docetaxel group. The Bax/Bcl-xl ratio significantly increased in docetaxel + CPA2, docetaxel + Vit1, docetaxel + Vit2, Vit1 and Vit2 groups compared to control, docetaxel and the docetaxel + CPA1 group. Caspase-3 expression significantly increased in all six groups in comparison to the control, and docetaxel groups. Its expression significantly increased in the Vit1 and Vit2 groups in comparison with docetaxel + Vit1, and docetaxel + Vit2, respectively.

Docetaxel ameliorates the damages to oocytes during vitrification by altering the expression of apoptosis-related genes and its effects are dependent on the vitrification solution used in cryopreservation of oocytes.

As a stabilizing agent, docetaxel can potentially reduce the damage to the oocyte cytoskeleton during vitrification. The aim of the present study was to investigate the effect of docetaxel on the survival rate and in vitro fertilization of oocytes after vitrification. NMRI mice (8-10 weeks old) were superovulated by injecting PMSG and HCG. Oocytes are surrounded by cumulus and corona cells and must be denuded by 0.1% hyaluronidase enzyme. The oocytes were then divided into 5 experimental groups including control, docetaxel, docetaxel+vitrification solution; docetaxel+ vitrification and vitrification. Mature oocytes were vitrified in ethylene glycol and dimethyl sulfoxide solutions at 15% concentration and 0.5 M sucrose. After thawing, their survival and fertilization rates were assessed up to the two-cell stage. Staining of the microtubules in the oocytes was performed with alpha-tubulin antibody. The fertilization rate of each group showed a significant decrease compared to the control group (P=0.001). The rate of formation of 2-cell embryos in both vitrified groups (docetaxel+ vitrified and vitrified vitrified) was significantly lower than non-vitrified (control (P=0.001) and docetaxel ((P=0.004)). The results showed that survival and fertilization rates in pre-incubated groups with docetaxel were higher than non-incubated groups, so docetaxel could improve reproductive techniques by reducing the damage to the oocyte cytoskeleton.

The purpose of the present study was to determine the simultaneous effect of high intensity interval training and decellularized amniotic membrane scaffold on gene expression of cell proliferation factors of satellite cells in the volumetric muscle loss injury in the tibialis anterior of rats.

In this experimental study, after preparation of human amniotic membrane and its decellularization process, volumetric muscle loss (VML) on the tibialis anterior muscle was performed on 24 rats. The rats were divided into two groups of 12 according to receiving and not receiving amniotic membrane scaffold. Each group was then divided into High-Intensity Interval Training (HIIT) and untreated groups. Real-time PCR technique was used to examine the gene expression of the three PAX7, MyoD1 and Myogenin genes.

There was a significant difference in the gene expression of PAX7 in the HIIT group with scaffolds compared to the non-scaffold training group (p=0.004) and the other two groups (p<0.001). In the gene expression of MyoD1, the HIIT group was significantly different from the sedentary group with scaffold (p=0.050) and the two groups without scaffold (p<0.001), respectively. In the gene expression of Myogenin, the HIIT group was significantly different from the sedentary group with scaffold (p=0.031) and the two groups without scaffold (p<0.001), respectively.

The results showed that the combination of HIIT and insert of decellularized amniotic membrane scaffold increases the gene expression of PAX7, MyoD1 and Myogenin and may be effective in the regeneration of volumetric muscle loss injury.

High morbidity and limited therapies of hepatic fibro genesis are important factor for better understanding the molecular mechanisms of the disease. Advances in the understanding of the molecular behavior of hepatic stellate cells (HSC) allow the progress of a field dedicated to anti-fibrotic therapy. Melanoma differentiation associated gene-7 (IL-24/mda-7) as a gene induced during terminal differentiation in human melanoma cells, but the inflammatory response of cells to IL-24/mda-7 is not entirely cleared.
Materias and LX-2 cells (a human hepatic stellate cell) were treated by leptin (positive control), media (control negative), or were transfected by empty plasmid and pcDNA3.1/mda-7. The inflammatory state was evaluated through measuring the mRNA expression level of inflammatory molecule, IL-1β. The role of IL-24/mda-7 modulation on inflammatory response was assayed using SOCS1 and SOCS3 gene expressions.
The expression levels of IL-1β, SOCS1 and SOCS3 were compared in LX-2 cell line groups. The expression of the IL-1β in the transfected cells was higher than the control cell, but it was not significant. The results indicated that the expressions of SOCS1 and SOCS3 were up-regulated following pcDNA 3.1/mda-7 transfection into LX-2 cells compared to control plasmids (p=0.0179, p=0.0428).
The endogenous IL-24/mda-7 exhibited a significant modulatory effect on stellate cells. Therefore, IL-24/mda-7 and relevant signaling pathways could be employed as a target for fibrosis treatment.