Yasser El-Sayed

Prof. Dr. Yasser El-Sayed

Damanhour University
+3
orcid

Research Focus & Metrics

Academic Career Length

20Years (2007-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 March 2011 in Experimental and Toxicologic Pathology
Verified
Journal Article
Closed access
MEMahmoud elneweshy
Mahmoud elneweshy
Yasser El-SayedYasser El-Sayed
Yasser El-Sayed

23 September 2012 in Andrologia
Verified
Journal Article
Closed access
PDF file
MEMahmoud elneweshy
Mahmoud elneweshy
ZEZ. K. El-Maddawy
Z. K. El-Maddawy
Yasser El-SayedYasser El-Sayed
Yasser El-Sayed
Cadmium (Cd) is a well-known testicular toxicant. This study was designed to explore the long-term effects of a single low dose of Cd on spermatogenesis, and testicular dysfunction and oxidative stress, and the therapeutic potential of date palm pollen extract (DPP) in averting such reproductive damage. Adult male Wistar rats received a single intraperitoneal injection of CdCl2 (0 or 1 mg kg−1). Twenty-four hours later, they started receiving DPP (0 or 40 mg kg−1) orally, once daily for 56 consecutive days. Cd exposure caused significant reproductive damage via reduced weight of the reproductive organs, which includes spermatological damage (decreased sperm count and motility and increased rates of sperm abnormalities), increased oxidative stress (increased malondialdehyde and decreased reduced glutathione levels), histological alterations (necrosis, inefficient to completely arrest spermatogenesis and a reduced Johnsen's score) and decreased serum testosterone level. DPP restored spermatogenesis and attenuated the toxic effects of Cd on the reproductive system to the levels observed in the control animals. These findings support the hypothesis that the testis is particularly sensitive to Cd, which can cause testicular damage and infertility. Treatment with DPP can ameliorate the deleterious effects of Cd, probably by activating testicular endocrine and antioxidant systems.