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Alaa El din-Abdel Aal Moubasher,Emad Abdelrehim Taha,Ehab Mohamed Elnashar,Ahmed Abdel Aal Abdel Maged,Asmaa Mohamed Zahran,Heba Hassan Sayed,Hisham Diab Gaber 대한생식의학회 2021 Clinical and Experimental Reproductive Medicine Vol.48 No.1
Objective: This study was conducted to investigate the relationship of semen parameters in samples used for intracytoplasmic sperm injection (ICSI) with fertilization and pregnancy rates in infertile couples.Methods: In this prospective study of Infertile couples with male factor infertility that had undergone ICSI, fractions of the same semen samples obtained for microinjection (to ensure the best predictability) were evaluated to determine the semen parameters and sperm DNA fragmentation index (DFI) on the day of oocyte recovery.Results: In total, 120 couples completed the study and were subdivided into fertilized (n=87) and non-fertilized couples (n=33). The fertilized couples were further classified into pregnant (n=48) and non-pregnant (n=39) couples. Compared to non-fertilized and non-pregnant couples, fertilized and pregnant couples showed statistically significantly higher sperm viability and percentage of normal sperm morphology, as well as significantly lower sperm DFI values. A receiver operating characteristic curve analysis of data from the 120 ICSI cycles showed that sperm viability, normal sperm morphology percentages, and sperm DFI were significant prognostic indicators of fertilization at cutoff values of 40%, 7%, and 46%, respectively. A sperm DFI of 46% showed sensitivity and specificity of 95% and 90%, respectively, for predicting fertilization, and no clinical pregnancies occurred in couples with a sperm DFI above 46%.Conclusion: Semen parameters from the ICSI day sample, especially sperm viability, normal morphology, and DFI, had an impact on fertilization and pregnancy outcomes in ICSI cycles.
Han, Jeonghoon,Park, Jun Chul,Kang, Hye-Min,Byeon, Eunjin,Yoon, Deok-Seo,Lee, Min-Chul,Sayed, Alaa El-Din H.,Hwang, Un-Ki,Lee, Jae-Seong Elsevier/North Holland Biomedical Press 2019 Aquatic toxicology Vol.210 No.-
<P><B>Abstract</B></P> <P>To examine the adverse effects of the benzo[α]pyrene (B[α]P), the monogonont rotifer <I>Brachionus rotundiformis</I> was exposed to various concentration of B[α]P (0 [control], 1, 10, and 100 μg/L) and measured life cycle parameters (e.g., mortality, fecundity [cumulated number of offspring], and lifespan), reactive oxygen species (ROS), antioxidant enzymatic activity of glutathione <I>S</I>-transferase (GST). In addition, defense-related transcripts (e.g., glutathione <I>S</I>-transferases [GSTs], ATP binding cassette [ABCs] transporters) and Western blot analysis of mitogen-activated protein kinase (MAPK) signaling pathway were investigated in B[α]P-exposed rotifer. In this study, the total intracellular ROS level and GST activity were significantly increased (<I>P</I> < 0.05), while fecundity and lifespan were also significantly (<I>P</I> < 0.05) reduced in a concentration dependent manner in B[α]P-exposed <I>B. rotundiformis</I>. In addition, transcriptional regulation of <I>GST</I>s and <I>ABC</I> transporters were significantly upregulated and downregulated (<I>P</I> < 0.05), respectively, suggesting that B[α]P can induce oxidative stress leading to induction of antioxidant system and detoxification mechanism. In addition to detoxification-related genes, B[α]P-exposed <I>B. rotundiformis</I> showed the increased levels of the p-JNK and p-p38, suggesting that B[α]P can activate MAPK signaling pathway in <I>B. rotundiformis</I>.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Fecundity and lifespan were decreased significantly (<I>P</I> < 0.05) in B[α]P-exposed <I>B. rotundiformis</I>. </LI> <LI> Total intracellular ROS level and GST activity were significantly increased (<I>P</I> < 0.05). </LI> <LI> Transcriptional regulation of <I>GST</I>s and <I>ABC</I> transporters were significantly upregulated and downregulated (<I>P</I> < 0.05). </LI> <LI> B[α]P-exposed <I>B. rotundiformis</I> showed the increased levels of the p-JNK and p-p38. </LI> </UL> </P>
Mohamed Ibrahim A.,Fathy Mohamed,Farghal Ahmed I.A.,Temerak Sobhy A.H.,Sayed Alaa El-Din H. 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.1
The mosquito Culex pipiens is the most widely distributed dipteran species in all regions of Egypt and the principal vector of Wuchereria bancrofti and certain arboviruses in human beings. For controlling C. pipiens vector, biological tools (e.g., larvivorous fish and bioinsecticides) are more potent and safer options to the environment, human beings, and beneficial organisms than chemical pesticides. The efficiency of O. niloticus juveniles as predatory fish species and two bioinsecticides, spinosad 24% and spinetoram 12%, was investigated against the C. pipiens developmental stages in the laboratory. The first trial evaluated the predatory efficacy of small-sized O. niloticus (2.1–2.6 cm; 250–315 mg) and large-sized O. niloticus (2.5–3.2 cm; 250–315 mg) against the 3rd larvae and pupae of C. pipiens. This is the first report in Egypt confirming the predation potential of O. niloticus as efficient predatory fish against the immature C. pipiens. Large-sized O. niloticus predated a greater number of 3rd of C. pipiens larvae and pupae than the small-sized ones. Furthermore, the daily consumption of C. pipiens larvae by small- and large-sized O. niloticus was significantly higher than the pupae. The second trial assessed the toxicity efficacy of spinosad 24% and spinetoram 12% against C. pipiens larvae and pupae. The results confirmed that the tested bioinsecticides showed higher potency toward C. pipiens larvae than pupae after exposure for 24 h and 48 h. Spinosad was more toxic toward 3rd C. pipiens larvae (LC 50 = 0.013 and 0.003 mg/L) and pupae (LC 50 = 320.69 and 44.28 mg/L) than spinetoram after 24 and 48 h. Herein, O. niloticus juveniles (as promising native predatory fish) and spinosyns bioinsecticides were more effective against C. pipiens in the larval stage than in the pupal stage. In conclusion, Nile tilapia juveniles and biorational compounds, spinosad 24% and spinetoram 12%, might be considered as promising and favorable environmental biological agents for controlling C. pipiens in Egypt. However, further trials are needed to investigate the potential of these agents in the control of this mosquito vector under field conditions.