Background: Low levels of reactive oxygen species (ROS) and calcium are necessary for sperm function. NADPH oxidase 5 (NOX5) is a membrane enzyme which produces ROS. This enzyme is dependent on calcium for its activity. We investigated the importance of NOX5 and an important calcium channel (CatSper) on sperm function.Methods: This laboratory in-vitro study was done in Shiraz, Iran, 2016. Norma...

backgroud: intrauterine insemination (iui) is generally attempted before proceeding to more expensive and invasive assisted reproductive techniques such as invitro fertilization (ivf) and intracytoplasmic sperm injection (icsi). this procedure is most commonly performed as a therapeutic method for couples with a wide variety of subfertility etiologies, such as low count or low motility of sperm...

objective: evaluation of the effects of different doses of antioxidant taurine on oxidative stress and human sperm parameters following cryopreservation. materials and methods: the semen of 20 fertile men were divided to 5 aliquot, one part considered as a fresh after analysis of standard semen parameters (motility, abnormal morphology, viability) and protamine deficiency, dna damage and measu...

abstract background: sperm cells extracted from testes (tese) have poor chromatin quality and motility. various substances are used in the laboratory to increase sperm motility and improve the art outcomes; however, there are few research which considered improving both sperm motility and chromatin quality. objective: the aim of this investigation was to evaluate the improvement of the testicul...

conclusions our study showed that ultrasonography findings can be a good predictor of sperm parameters in patients with varicocele. results the semen analysis parameters, including semen volume and sperm morphology, count, and motility, significant correlations with the diameter of the varicocele vein but were not correlated with testes size. in addition, the patients with reflux of longer than...

1. Abstract In the real world, structural systems may show nonlinear dynamic behavior. Linear static response structural optimization has been developed quite well by using linear static response analysis. Finite element analysis regarding the nonlinearities or dynamic effects has also been developed very well. However, conventional optimization methods considering the nonlinearities or dynamic...

Open and dynamic characteristics of distributed software systems make user requirements and hardware resources change more rapidly, which make their evolution or reconfiguration inevitable, especially during their execution. A critical issue for those distributed systems is the specifying and analysis dynamic reconfiguration process of their architectures. In this paper, we proposed a method of...

Structural damage detection is a field that has attracted a great interest in the scientific community in recent years. Most of these studies use dynamic analysis data of the beams as a diagnostic tool for damage. In this paper, a massless rotational spring was used to represent the cracked sections of beams and the natural frequencies and mode shape were obtained. For calculation of rotational...

With the complexity and the dynamic analysis requirements during software adaptation for software in the open and dynamic environment, the software analysis requires integrating multiple analysis methods and controlling the execution of analysis methods in specific sequence. As a result, the analysis process is hard to be communicated to its designers, implementers and users without an explicit...