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Zaazaa, H. E., E. S. Elzanfaly, A. T. Soudi, and M. Y. Salem, "Application of the ratio difference spectrophotometry to the determination of ibuprofen and famotidine in their combined dosage form; Comparison with previously published spectrophotometric methods", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , vol. 143, pp. 251–255, 2015.
Zaazaa, H. E., E. S. Elzanfaly, A. T. Soudi, and M. Y. Salem, "Application of the ratio difference spectrophotometry to the determination of ibuprofen and famotidine in their combined dosage form; Comparison with previously published spectrophotometric methods", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 143, pp. 251-255, 2015.
Zaazaa, H. E., E. S. Elzanfaly, A. T. Soudi, and M. Y. Salem, "Spectrophotometric method for the determination of two coformulated drugs with highly different concentrations. Application on vildagliptin and metformin hydrochloride", Journal of Applied Spectroscopy, vol. 83, no. 1: Springer US, pp. 137–140, 2016. Abstract
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Zaazaa, A., A. J. Bella, and R. Shamloul, "Drug Addiction and Sexual Dysfunction", Endocrinology and metabolism clinics of North America, vol. 42, no. 3: Elsevier, pp. 585–592, 2013. Abstract
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Zaazaa, H. E., E. S. Elzanfaly, A. T. Soudi, and M. Y. Salem, "SPECTROPHOTOMETRIC METHOD FOR THE DETERMINATION OF TWO COFORMULATED DRUGS WITH HIGHLY DIFFERENT CONCENTRATIONS. APPLICATION ON VILDAGLIPTIN AND METFORMIN HYDROCHLORIDE", JOURNAL OF APPLIED SPECTROSCOPY, vol. 83, issue 1, pp. 154-157, 2016.
Zaazaa, H. E., S. S. Abbas, M. Abdelkawy, and M. M. Abdelrahman, "Determination of Dropropizine in Presence of its Oxidative Degradates by Four Different Techniques", Bull. Fac. Pharm. Cairo Univ., vol. 46, issue 1, pp. 191-204, 2008.
Zaazaa, H. E., S. S. Abbas, H. A. M. Essam, and M. G. El-Bardicy, "Development and validation of stability- indicating methods for determination of Torsemide .", Bull. Chem. Soc. Ethiop, vol. 30, issue 1, pp. 13--25, 2016.
Zaazaa, A. A., I. Fathy, O. Ayman, A. Hassanin, and H. Ghanem, "A pilot study of penile hemodynamics in men with penile curvatures.", International journal of impotence research, vol. 29, issue 2, pp. 86-88, 2017 Mar. Abstract

Penile curvature (PC) is bothersome to the patient. PC is either congenital or acquired. In most of the circulatory system, blood flows in a laminar profile with minimal energy expenditure. When a fluid passes in a curved tube, the laminar profile is disturbed and changed into a turbulent flow. It increases the energy expenditure and reduces the flow. Turbulent flow may have a role in the development of an atherosclerotic plaque and in localizing its site. The aim of this research was to study penile hemodynamics before and after correction of PC. This prospective study included 20 participants, with PC more than 30°. For each participant, preoperative color duplex doppler ultrasonography (CDDU), correction of the curvature using 16 dot plication technique and post-operative CDDU were done. Furhtermore, arterial systolic velocity was estimated distal to the site of curvature/correction every 5 min for 25 min. The degree of curvature ranged from 30° to 90° with a mean of 55±18.98. Comparative study between the preoperative and post-operative data proved a significantly higher postoperative peak systolic velocity distal to the site of correction, whereas CDDU data had insignificant differences. We concluded that correction of PC is associated with improvement of penile arterial blood flow distal to the site of correction.

Zaazaa, H. E., S. S. Abbas, H. A. M. Essam, and M. G. El-Bardicy, "Validated Chromatographic Methods for Determination of Perindopril and Amlodipine in Pharmaceutical Formulation in the Presence of their Degradation Products", Journal of Chromatographic Science, vol. 51, issue 6, pp. 533-543, 2013.
Zaazaa, H. E., E. S. Elzanfaly, A. T. Soudi, and M. Y. Salem, "Application of the ratio difference spectrophotometry to the determination of ibuprofen and famotidine in their combined dosage form; Comparison with previously published spectrophotometric methods", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , vol. 143, pp. 251–255, 2015.
Zaazaa, H. E., E. S. Elzanfaly, A. T. Soudi, and M. Y. Salem, "Application of the ratio difference spectrophotometry to the determination of ibuprofen and famotidine in their combined dosage form; Comparison with previously published spectrophotometric methods", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 143: Elsevier, pp. 251–255, 2015. Abstract
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Zaazaa, H. E., E. S. Elzanfaly, A. T. Soudi, and M. Y. Salem, "Application of the ratio difference spectrophotometry to the determination of ibuprofen and famotidine in their combined dosage form; Comparison with previousl published spectrophotometric methods", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 143, pp. 251-255, 2015. Abstract

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Zaazaa, H. E., E. S. Elzanfaly, A. T. Soudi, and M. Y. Salem, "SPECTROPHOTOMETRIC METHOD FOR THE DETERMINATION OF TWO COFORMULATED DRUGS WITH HIGHLY DIFFERENT CONCENTRATIONS. APPLICATION ON VILDAGLIPTIN AND METFORMIN HYDROCHLORIDE", JOURNAL OF APPLIED SPECTROSCOPY, vol. 83, issue 1, pp. 154-157, 2016.
Zaazaa, H. E., E. S. Elzanfaly, A. T. Soudi, and M. Y. Salem, "SPECTROPHOTOMETRIC METHOD FOR THE DETERMINATION OF TWO COFORMULATED DRUGS WITH HIGHLY DIFFERENT CONCENTRATIONS. APPLICATION ON VILDAGLIPTIN AND METFORMIN HYDROCHLORIDE", Journal of Applied Spectroscopy, vol. 83, issue 1, pp. 137-140, 2016.
Zaazaa, A., A. Adel, I. Fahmy, Y. Elkhiat, A. A. Awaad, and T. Mostafa, "Effect of varicocelectomy and/or mast cells stabilizer on sperm DNA fragmentation in infertile patients with varicocele.", Andrology, vol. 6, issue 1, pp. 146-150, 2018 Jan. Abstract

This study aimed to assess the effect of varicocelectomy and/or mast cells (MCs) stabilizer on sperm DNA fragmentation in infertile men with varicocele (Vx). Overall, 120 infertile patients were randomized to three equal treatment arms; patients that underwent varicocelectomy, patients on 1 mg ketotifen twice daily for three months, and patients that underwent varicocelectomy followed with 1 mg ketotifen twice daily for three months. These patients were subjected to history taking, clinical examination, semen analysis, and estimation of sperm DNA fragmentation index (DFI). After 3 months, all investigated groups showed significant improvement regarding the mean total sperm count, sperm concentration, total sperm motility, and sperm normal forms percentage compared with the pre-treatment data. As well, the mean sperm DFI was significantly improved compared with the pre-treatment data; in men that underwent varicocelectomy (34.6% vs. 28.3%), in men on MC stabilizer only (33.4% vs. 27.8%), and in men that underwent varicocelectomy followed by MC stabilizer (34.3% vs. 25.1%). Sperm DFI improvement percentages showed the highest improvement in men that underwent varicocelectomy followed with MC stabilizer compared with the other two groups (26.8% vs. 18.2%, 16.8%). Sperm DFI improvement percentages showed significant increases in the infertile patients with Vx grade III compared to Vx grade II in all investigated groups. It is concluded that in infertile men associated with Vx and high sperm DFI, surgical repair followed with MCs stabilizer significantly improve sperm DFI compared with either surgical repair or MCs stabilizer alone.

Zaazaa, A., I. Fathy, O. Ayman, A. Hassanin, and H. Ghanem, "A pilot study of penile hemodynamics in men with penile curvatures", International Journal of Impotence Research, vol. 29, pp. 86-88, 2017. hemodynamics_of_pc_published.pdf
Zaazaa, A., A. Adel, I. Fahmy, Y. Elkhiat, A. A. Awaad, and T. Mostafa, "Effect of varicocelectomy and/or mast cells stabilizer on sperm DNA fragmentation in infertile patients with varicocele.", Andrologia, vol. 6, issue 1, pp. 146-150, 2018.
Zaazaa, H. E., S. S. Abbas, H. A. M. Essam, and M. G. El-Bardicy, "Comparative Study of Different Plasticized Membrane Electrodes for the Stability-indicative Determination of Torsemide", Portugaliae Electrochimica Acta , vol. 30, issue 5, pp. 335-350, 2012.
Zaazaa, H. E., M. M. Abdelrahman, N. W. Ali, M. A. Magdy, and M. Abdelkawy, "Kinetic study and mechanism of Niclosamide degradation", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 132 , pp. 655-662, 2014.
Zaazaa, H. E., N. N. Salama, S. M. Azab, S. A. Atty, N. M. El-Kosy, and M. Y. Salema, "A novel surfactant silica gel modified carbon paste electrode in micellar media for selective determination of diminazene aceturate in the presence of its stabilizer", RSC Adv., vol. 5, pp. 48842–48850 , 2015.
Zaazaa, A., and T. Mostafa, "Spontaneous Penile Tumescence by Sparing Cavernous Tissue in the Course of Malleable Penile Prosthesis Implantation", International Journal of Sexual Medicine, vol. 16, issue 3, pp. 474–478, 2019.
Zaazaa, H. E., A. O. Mohamed, M. A. Kawy, and M. A.Hawwam, "Stability indicating chromatographic techniques for the determination of pipoxolan HCl", Journal of Applied Pharmaceutical Science, vol. 3, issue 10, pp. 066-073, 2013.
Zaazaa, H. E., E. S. Elzanfaly, A. T. Soudi, and M. Y. Salem, "Development and validation of an ultraperformance liquid chromatography method coupled with tandem mass spectrometry for determination of alizapride in human plasma", RSC Advances, vol. 5, pp. 76377–76382, 2015.
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