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Z.M., S. A., E. L. - M. M. A.F., S. M. A. M. Habib, and H. H. M., "Effect of using some feed additives on broilers during heat stress", 3rd International Poultry Conference 4 – 7 Apr. 2005 Hurghada – Egypt,, pp. C20–407, 2005. Abstract
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Z.M., S. A., A. - M. N. Y., E. L. - M. M. A. F. Habib, and H. H. M., "Evaluation of some medicinal herb mixtures as natural growth promoters in broiler diets", Egyptian Journal of Nutrition and Feeds, vol. 13, no. 2, pp. 301–318, 2010. Abstract
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Z.Osman, H.M.Soliman, M. E. I. Shibini, and M.Abou-Hussein, "Economic feasibility study of a solar refrigeration system in Aswan -EGYPT", AMSE periodicals: Modeling. simulation and control, vol. 25, issue 2, pp. 25-33,, 1988.
Z.Y.Zohny, H.M.Mourad, and E.K.Al-Hussaini, "Multi-user detection employing BSS techniques in mobile communication systems", mid west syposium on electronics and circuits (MWSEC), Cairo,Egypt, December, 2003.
and ZA El-Gendy, A Ramadan, S. A. E. - B. R. F. A. S. A. E. - M. 1 S. A. E. - R. S. A. H. Y. S., "Carvacrol hinders the progression of hepatic fibrosis via targeting autotaxin and thioredoxin in thioacetamide-induced liver fibrosis in rat", Human and Experimental Toxicology, vol. 6, pp. 1-14, 2021. carvacrol_hinders_the_progression.pdf
Zaafan, M. A., H. F.Zaki, A. I.El-Brairy, and S. A. Kenawy, "Protective effects of atorvastatin and quercetin on isoprenaline-induced myocardial infarction in rats", B-FOPCU, vol. 51, pp. 35-41, 2013. mai_quercetin.pdf
Zaafan, M. A., H. F. Zaki, A. I. El-Brairy, and S. A. Kenawy, "Pyrrolidinedithiocarbamate attenuates bleomycininduced pulmonary fibrosis in rats: Modulation of oxidative stress, fibrosis, and inflammatory parameters", Experimental Lung Research, vol. 42, pp. 408-416, 2016. pdtc_pulmonary_fibrosis.pdf
Zaahkouk, A. M. S., M. T. Abdel Aziz, A. M. Rezq, H. M. Atta, H. H. Fouad, H. H. Ahmed, D. Sabry, and M. H. Yehia, "Efficacy of a novel water-soluble curcumin derivative versus sildenafil citrate in mediating erectile function", International journal of impotence research, vol. 27, issue 1, pp. 9-15, 2015.
Zaahkouk, A. M. S., A. M. T. Aziz, A. M. Rezq, H. M. Atta, H. H. Fouad, H. H. Ahmed, D. Sabry, and M. H. Yehia, "Efficacy of a novel water-soluble curcumin derivative versus sildenafil citrate in mediating erectile function.", International Journal of Impotence Research, vol. 27, pp. 9-15, 2014.
Zaakook, M., M. Ayoub, E. AbuSinna, and S. el-Sheikh, "Role of glypican-3 immunocytochemistry in differentiating hepatocellular carcinoma from metastatic carcinoma of the liver utilizing fine needle aspiration cytology.", Journal of the Egyptian National Cancer Institute, vol. 25, issue 4, pp. 173-80, 2013. Abstract

PURPOSE: Evaluation of the sensitivity and specificity of glypican3 (GPC3) in differentiating hepatocellular carcinoma (HCC) from metastatic carcinomas of the liver in cell block material.

PATIENTS AND METHODS: Sixty cell blocks were prepared from liver FNAs performed in the radiodiagnosis department, National Cancer Institute, in the period between August 2011 and May 2012. Cases diagnosed as hepatocellular carcinoma, or metastatic carcinoma were included in the study. Cell block sections were stained with anti GPC-3. Sensitivity, specificity, and positive and negative predictive values, of GPC3 were calculated. The final diagnosis was based on the triple approach of clinical data, radiological findings, as well as cytomorphologic features aided by GPC-3 results.

RESULTS: 70% of cases were diagnosed as HCC, and 30% as metastatic carcinomas. 95.2% of HCC cases expressed GPC3. Poorly differentiated cases showed the highest GPC3 sensitivity (100%), followed by moderately differentiated cases (96.5%), while well differentiated cases expressed GPC3 in 90% of cases. 83.3% of metastatic carcinomas were negative for GPC3. In this study, sensitivity of GPC-3 in HCC was 95.2%, specificity was 83.3%, positive and negative predictive values were 93% and 88.2% respectively, and total accuracy was 91.7%.

CONCLUSION: Immunocytochemical staining for GPC3 in cell block material is a highly sensitive and specific method capable of distinguishing HCC from the vast majority of metastatic carcinomas of the liver.

Zaater, A., "Outcome of Single Level Anterior Discectomy for Cervical Myelopathy.", XV WFNS World Congress of Neurosurgery, Coex Convention Center, Seoul, Korea, 10 septemper, 2013.
Zaater, A., and M. REFAAT, "Prognosis of cervical degenerative myelopathy after multilevel anterior cervical discectomies and fusion", Egyptian journal of neurosurgery , vol. 29, issue 1, pp. 57-62, 2014.
Zaater, A., and M. REFAAT, "Temporalis-based hinged craniotomy : Technical modification of decompressive craniectomy in head injury", Egyptian journal of neurosurgery , vol. 29, issue 2, pp. 49-52, 2014.
Zaater, A., and M. REFAAT, "Surgical management of tentorial meningiomas : analysis of 14 cases experience", Egyptian journal of neurosurgery , vol. 29, issue 1, pp. 39-44 , 2014.
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, 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, 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., 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, 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, "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, "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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