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Yousef, A. A., F. Y. Mohamed, N. F. Boraey, N. E. Akeel, A. A. Soliman, N. M. Waked, M. I. A. Hashem, H. Shehata, D. S. Fahmy, and A. Ismael, "Association of Plasminogen Activator Inhibitor 1 (PAI-1) 4G/5G Polymorphism and Susceptibility to SLE in Egyptian Children and Adolescents: A Multicenter Study [Corrigendum]", Journal of Inflammation Research, vol. 14: Dove Press, pp. 265-266, 2021. Abstract
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Yousef, H. A., E. A. Abdelfattah, and M. Augustyniak, "Antioxidant enzyme activity in responses to environmentally induced oxidative stress in the 5th instar nymphs of Aiolopus thalassinus (Orthoptera: Acrididae)", Environmental Science and Pollution Research, vol. 26, no. 4: Springer Berlin Heidelberg, pp. 3823–3833, 2019. Abstract
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Yousef, H. A., E. A. Abdelfattah, and M. Augustyniak, "Antioxidant enzyme activity in responses to environmentally induced oxidative stress in the 5th instar nymphs of Aiolopus thalassinus (Orthoptera: Acrididae)", Environmental Science and Pollution Research, vol. 26, no. 4: Springer Berlin Heidelberg, pp. 3823–3833, 2019. Abstract
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Yousef, A. A., F. Y. Mohamed, N. F. Boraey, N. E. Akeel, A. A. Soliman, N. M. Waked, M. I. A. Hashem, H. Shehata, D. S. Fahmy, and A. Ismael, "Association of Plasminogen Activator Inhibitor 1 (PAI-1) 4G/5G Polymorphism and Susceptibility to SLE in Egyptian Children and Adolescents: A Multicenter Study [Corrigendum]", Journal of Inflammation Research, vol. 14: Dove Press, pp. 265-266, 2021. Abstract
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Yousef, H. A., E. A. Abdelfattah, and M. Augustyniak, "Antioxidant enzyme activity in responses to environmentally induced oxidative stress in the 5th instar nymphs of Aiolopus thalassinus (Orthoptera: Acrididae)", Environmental Science and Pollution Research, vol. 26, issue 4, pp. 3823–3833, 2019.
Yousef, H. A., A. A. Meguid, and A. Afify, "Analysis of larval antigens of Cephalopina titillator in the camel mucus for diagnosis of infestation", Biologia, Section Zoology DOI: 10.1515/biolog-2016-0051, vol. 71, issue 4, pp. 438—443, 2016. analysis_of_antigens-_biologia-2016.pdf
Yousef, H. A., E. A. Abdelfattah, and M. Augustyniak, "Antioxidant enzyme activity in responses to environmentally induced oxidative stress in the 5th instar nymphs of Aiolopus thalassinus (Orthoptera: Acrididae)", Environmental Science and Pollution Research, vol. 26, no. 4: Springer Berlin Heidelberg, pp. 3823–3833, 2019. Abstract
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Yousef, H. A., E. A. Abdelfattah, and M. Augustyniak, "Antioxidant enzyme activity in responses to environmentally induced oxidative stress in the 5th instar nymphs of Aiolopus thalassinus (Orthoptera: Acrididae)", Environmental Science and Pollution Research, vol. 26, issue 4: Springer Berlin Heidelberg, pp. 3823-3833, 2019. Abstract
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Yousef, A. A., F. Y. Mohamed, N. F. Boraey, N. E. Akeel, A. A. Soliman, N. M. Waked, M. I. A. Hashem, H. Shehata, D. S. Fahmy, and A. Ismael, "Association of Plasminogen Activator Inhibitor 1 (PAI-1) 4G/5G Polymorphism and Susceptibility to SLE in Egyptian Children and Adolescents: A Multicenter Study", Journal of Inflammation Research, vol. 13: Dove Press, pp. 1103-1111, 2020. Abstract
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Yousef, S., M. A. Semeida, and S. S. Khodairy, "ALERT OF SEVERE EARTHQUAKES WORLDWIDE DUE TO SOLAR FORCING OF VERY WEAK SOLAR CYCLE 24", International Journal of Advances in Science Engineering and Technology, vol. 6, issue 2, pp. 81-85, 2018. sun_earthquake_paper.pdf
Yousry, S. M., Y. Sedky, and A. Sobieh, "Association of IL-4 (intron 3) and IL-10 (-1082) gene polymorphisms with risk of mitral valve disease in children with rheumatic heart disease", Cardiology in the Young, vol. 26, issue 7: Cambridge University Press, pp. 1290, 2016. Abstract
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Yousry, S. M., Y. Sedky, and A. Sobieh, "Association of IL-4 (intron 3) and IL-10 (-1082) gene polymorphisms with risk of mitral valve disease in children with rheumatic heart disease", Cardiology in the young: Cambridge Univ Press, pp. 1–7, 2015. Abstract
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Yousry, M., A. Kamel, and O. Hegazi, "Aligning Organization Measurements with Organization Strategic Goals", The Egyptian Computer Journa, vol. 37, issue 2, 2009.
Yousry, S. M., Y. Sedky, and A. Sobieh, "Association of IL-4 (intron 3) and IL-10 (-1082) gene polymorphisms with risk of mitral valve disease in children with rheumatic heart disease", Cardiology in the Young, vol. 26, issue 7: Cambridge University Press, pp. 1290-1296, 2016. Abstract
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Yousry, S. M., Y. Sedky, and A. Sobieh, "Association of IL-4 (intron 3) and IL-10 (-1082) gene polymorphisms with risk of mitral valve disease in children with rheumatic heart disease.", Cardiology in the young, pp. 1-7, 2015 Oct 28. Abstract

Aim Rheumatic heart disease is an inflammatory disease of cardiac tissue. The underlying pathogenic mechanisms highlight a complex interplay of immunological, genetic, and environmental factors. The aim of the present study was to investigate whether IL-4 (intron 3) and IL-10 (-1082) gene polymorphisms could be associated with susceptibility and/or severity of rheumatic heart disease among patients from the Egyptian population. Materials and methods A cohort of 140 Egyptian children with rheumatic heart disease and 100 healthy controls were enrolled in this case-control study. Genotyping for IL-4 (intron 3) and IL-10 (-1082) gene polymorphisms was carried out for all patients using a polymerase chain reaction-based analysis.

RESULTS: No significant difference in the distribution of genotypes and allelic frequencies between rheumatic heart disease cases and controls for IL-4 (intron 3) (p=0.17; OR 1.07, 95% CI 0.82-3.74) and IL-10 (-1082) (p=0.49; OR 1.03, 95% CI 0.65-2.71) gene polymorphisms was observed. Further categorisation of patients into mitral valve disease and combined valve disease subgroups showed that cases with mitral valve disease have significantly higher frequency of the RP2 allele of IL-4 (intron 3) (p=0.03; OR 2.98, 95% CI 1.93-6.15) and the G allele of IL-10 (-1082) (p=0.04; OR 2.14, 95% CI 1.62-4.95) when compared with controls. Discussion Our study shows that IL-4 (intron 3) and IL-10 (-1082) gene polymorphisms are not significantly associated with susceptibility to rheumatic heart disease, but they might play a role in the pathogenesis of patients with mitral valve disease.

Youssef, A. H., and M. R. Abonazel, "Alternative GMM Estimators for First-order Autoregressive Panel Model: An Improving Efficiency Approach", Communications in Statistics - Simulation and Computation, vol. 46, issue 4, no. ja, pp. 3112-3128, 2017. AbstractWebsite

This paper considers first-order autoregressive panel model which is a
simple model for dynamic panel data (DPD) models. The generalized
method of moments (GMM) gives efficient estimators for these models.
This efficiency is affected by the choice of the weighting matrix which has
been used in GMM estimation. The non-optimal weighting matrices have
been used in the conventional GMM estimators. This led to a loss of
efficiency. Therefore, we present new GMM estimators based on optimal or
suboptimal weighting matrices. Monte Carlo study indicates that the bias
and efficiency of the new estimators are more reliable than the
conventional estimators.

Youssef, F. S., H. A. El-Banna, H. Y. Elzorba, and A. M. Galal, "Application of some nanoparticles in the field of veterinary medicine", International Journal of Veterinary Science and Medicine, vol. VOL. 7, issue NO. 1, pp. 78–93, 2019.
Youssef, S. H., M. A. M. Hegazy, D. Mohamed, and A. M. Badawey, Analysis of paracetamol, pseudo-ephedrine andbrompheniramine in comtrex tablets using chemometric methods, : World journal of pharmacy and pharmaceutical sciences, 2017. Abstract
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Youssef, S. H., D. Mohamed, M. A. M. Hegazy, and A. Badawey, "Analytical methods for the determination of paracetamol, pseudoephedrine and brompheniramine in Comtrex tablets", BMC chemistry, vol. 13, issue 1: BioMed Central, pp. 1-15, 2019. Abstract
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Youssef, S. H., M. A. M. Hegazy, D. Mohamed, and A. M. Badawey, "ANALYSIS OF PARACETAMOL, PSEUDOEPHEDRINE AND BROMPHENIRAMINE IN COMTREX® TABLETS USING CHEMOMETRIC METHODS", WORLD JOURNAL OF PHARMACY AND PHARMACEUTICAL SCIENCES, vol. 6, issue 6, pp. 1644-1659, 2017. souha_paper_world_journal_of_pharmacy_and_pharmaceutical_sciences.pdf
Youssef, G., W. Ammar, Z. Saad, and Yasser Sharaf, "Assessment of left ventricular regional wall motion abnormalities using regional time-volume curves obtained by real time three-dimensional echocardiography", The Egyptian Heart Journal, vol. 70, issue 70, pp. 189-194, 2018.
Youssef, G., Z. Saad, W. Ammar, and Yasser Sharaf, "Assessment of left ventricular regional wall motion abnormalities using regional time-volume curves obtained by real time three-dimensional echocardiography", The Egyptian heart journal, vol. 70, issue 3, pp. 189-194, 2018. 3d_assessment_of_swma.pdf
Youssef, S. H., M. A. ‑M. Hegazy, D. Mohamed, and A. M. Badawey, Analysis of paracetamol, pseudoephedrine and cetirizine in Allercet Cold, , 2018. Abstract
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Youssef, A. M., A. M. El-Nakkadi, and A. M. Aboul-Enein, "Amino acid composition of Egyptian poultry muscles", Pakistan J. Sci., , vol. 27, issue Nos. 1-7, pp. 37, 1975.
Youssef, S. H., M. A. B. D. E. L. - M. Hegazy, D. Mohamed, and A. M. Badawey, "Analysis of paracetamol, pseudoephedrine and cetirizine in Allercet Cold® capsules using spectrophotometric techniques", Chemistry Central Journal, vol. 12, issue 1: BioMed Central, pp. 1-14, 2018. Abstract
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