khalaf.ali

Khalaf Ali Fayez Abuamra

استاذ - أستاذ متفرغ

كلية العلوم

العنوان: قسم النبات والميكروبيولوجى -كلية العلوم -جامعة سوهاج

2

إعجاب

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية: Oxidative stress


2018-10-22 23:44:33 الكلمات المفتاحية Oxidative stress, (iOAT), Mitochondrial Anomalies, Midpiece,
Oxidative Stress in idiopathic Oligoathenoteratozoospermia (iOAT) and its Relation to Midpiece and Mitochondrial Anomalies.
INTRODUCTION AND AIM OF THE STUDY Idiopathic Oligoathenoteratozoospermia (iOAT syndrome) can be found in a high percentage of patients with male infertility. Reactive oxygen species (ROS) have been implicated in male infertility in the last years. In the present study we measured the levels of Reactive oxygen species (ROS) and Oxidative stress (OS) in iOAT patients and their correlation with ... إقراء المزيد

2018-10-15 23:54:11 الكلمات المفتاحية Infertility, Oxidative stress, Semen analysis, varicocele,
Efficacy of medical treatment in varicocele patients presenting with oligoasthenoteratozoospermia
BACKGROUND: Varicocele is the most common cause of male infertility. It affects spermatogenesis by multiple theories; the most recent is by increasing the levels of reactive oxygen species. Medical treatment in the form of tamoxifen, anti-oxidant (Zinc) and MPFF (Micronised purified flavonoid fractions), may improve spermatogenesis and semen parameters in patients with varicocele. AIM: show the efficacy of medical treatment ... إقراء المزيد

2018-10-15 00:14:42 الكلمات المفتاحية Oxidative stress, sperm motility, IOAT patients, outer dense fibers,
Oxidative stress and sperm motility in spermatoozoa of IOAT patients and their relation to outer dense fibers abnormalities
INTRODUCTION AND OBJECTIVE: Outer dense fibers (ODFs) are nine fibers surrounding Axoneme in the midpiece and extend to variable length through the principal piece of spermatozoa. They represent about 30% of the protein portion of human spermatozoa and accordingly they are affected by any pathology that can affect protein content of spermatozoa as in presence of oxidative stress (OS). ODFs ... إقراء المزيد

2018-10-14 18:48:29 الكلمات المفتاحية Clock genes, Innate immunity, Oxidative stress, Mitochondria, melatonin,
Melatonin, clock genes and mitochondria in sepsis
After the characterization of the central pacemaker in the suprachiasmatic nucleus, the expression of clock genes was identified in several peripheral tissues including the immune system. The hierarchical control from the central clock to peripheral clocks extends to other functions including endocrine, metabolic, immune, and mitochondrial responses. Increasing evidence links the disruption of the clock genes expression with multiple diseases ... إقراء المزيد

2018-10-14 18:15:56 الكلمات المفتاحية melatonin, Oxidative stress, exercise, Antioxidants, skeletal muscle, athletes,
The benefit of a supplement with the antioxidant melatonin on redox status and muscle damage in resistance-trained athletes
Previous data showed that the administration of high doses of melatonin improved the circadian system in athletes. Here, we investigated in the same experimental paradigm whether the antioxidant properties of melatonin has also beneficial effects against exercise-induced oxidative stress and muscle damage in athletes. Twenty-four athletes were treated with 100 mg.day-1 of melatonin or placebo 30 min before bedtime during ... إقراء المزيد

2018-10-12 08:30:16 الكلمات المفتاحية breast cancer, Egyptian Females, Oxidative stress, Soluble Fas.,
Correlations of circulating levels of oxidants, antioxidants and soluble Fas in breast cancer among Egyptian females
Background: Breast cancer is the first most common malignancy in Egyptian females. Oxidative stress is considered to be involved in the pathophysiology of all cancers, especially breast cancer. An inappropriately low rate of apoptosis can give rise to cancer. Objectives: The purpose of this study was to asses, compare and correlate the circulatory levels of some oxidants (malondialdehyde "MDA" and ... إقراء المزيد

2018-10-08 22:37:04 الكلمات المفتاحية Acrosome, MDA, Oxidative stress, Sperm, Infertility,
Oxidative stress and acrosomal morphology: A cause of infertility in patients with normal semen parameters
INTRODUCTION: Acrosome has a vital role in the process of penetration of zona pellucid (ZP). It is highly susceptible to elevated reactive oxygen species (ROS) and oxidative stress (OS). As generally accepted that OS stress has deteriorating effects on sperm functions, we studied the effect of OS on sperm parameters and acrosomal structure in infertile patients with normal semen parameters. ... إقراء المزيد

2018-10-07 22:13:52 الكلمات المفتاحية ORP, semen, Oxidative stress, cryopreservation,
High seminal oxidation reduction potential in cryopreserved semen from infertile men is a marker of poor post-thaw sperm quality
OBJECTIVE Cryopreservation causes deleterious effects on human spermatozoa due to freezing and thawing, leading to decreased cryosurvival rates (CSR). The objectives of this study were to assess levels of oxidation-reduction potential (ORP) in cryopreserved semen of infertile men, and to determine their relationship to post-thaw sperm parameters. DESIGN A prospective cohort study. MATERIALS AND METHODS The study included 28 semen ... إقراء المزيد

2018-09-29 19:03:01 الكلمات المفتاحية Infertility, Sperm, Oxidative stress, MDA, Acrosome,
Oxidative stress and acrosomal morphology: A cause of infertility in patients with normal semen parameters
Introduction: Acrosome has a vital role in the process of penetration of zona pellucida (ZP). It is highly susceptible to elevated reactive oxygen species (ROS) and oxidative stress (OS). As generally accepted that OS stress has deteriorating effects on sperm functions, we studied the effect of OS on sperm parameters and acrosomal structure in infertile patients with normal semen parameters. ... إقراء المزيد

2018-09-19 15:34:32 الكلمات المفتاحية Aging, angiogenesis, Oxidative stress, apoptosis.,
Oxidative Stress, Angiogenesis and Apoptosis in Relation to Aging
ABSTRACT Apoptosis and aging are complementary and cooperative processes that reduce cell proliferation and promote resistance to tumor development. Cellular levels of oxidative stress increase during physiological aging and tend to induce apoptosis, thereby influencing cellular and tissue aging and life span. Aim of study: is to determine the relationship between aging and apoptotic indices in the form of s-Fas ... إقراء المزيد