Written by Sohrab Kazemi, Nader Bahramifar, Ali Akbar Moghadamnia, Seyed Gholam Ali Jorsarae
Parent Category: Year 2016, Volume 8
Category: Volume 8, Issue 8, August 2016
Introduction: Bisphenol A (BPA) and Nonylphenol (NP) have estrogen-like activity, and some of their adverse biological effects have been demonstrated. This study was designed to determine the association of plasma and tissue concentrations of BPA and NP and changes in the parameters of the reproductive system in rats.
Methods: Male Wistar rats were administered three doses of BPA and NP (5, 25, and 125 µg/kg) by gavage for 35 consecutive days in 2014-2015, and a 2-ml blood sample was taken from each treated rat. Concentrations of BPA and NP in the blood were determined using the HPLC-fluorescence detection method. The sperm are produced in the epididymis and vas deferens, and they swim up in Ham`s F10 solution, and, then, various parameters were evaluated using an invert microscope, and they included the count, motility, and morphology of the sperm.
Results: The weight of the testes and prostate in the rats receiving BPA and NP treatment showed significant decreases compared to the control group. Similarly, NP created higher concentration than BPA in the serum (e.g., 5.48 ± 0.65 vs. 1.36 ± 0.25, at 125 µg/kg). Compared to the control group, dose-dependent significant decreases in count and motility in the sperm were observed following the administration of BPA (25 and 125 µg/kg) and NP (all three doses). Morphologic aspects of the rats` sperm were changed in various doses of BPA and NP
Conclusions: According to our findings, BPA and NP induced dose-dependent toxic effects on various parameters, i.e., sperm toxicity, weight of the testes, and weight of the prostate gland.
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Keywords: Bisphenol A (BPA), Nonylphenol (NP), Spermatogenesis, HPLC, Fluorescence detector, Prostate
Volume 13, Issue 1, January-March 2021
The worldwide spread of COVID-19 as an emerging, rapidly evolving situation, and the dramatic need of urgent medicine or vaccine, has rapidly brought new hypotheses for pathophysiology and potential medicinal agents to the fore. It is crucial that the research community provide a way to publish this research in a timely manner.
To contribute to this important public health discussion, the Electronic Physician Journal is excited to announce a fast-track procedure to help researchers publish their articles on COVID-19 related subjects that fall under the broad definition of public health, internal medicine, and pharmacology. We are especially welcome to all hypotheses about the pathological basis of the COVID-19 infection and the possible characteristics of potential medicine and vaccine. Submit your manuscript here
The most recent editorial (June 2020)
Lessons from COVID-19 pandemic and the Morocco’s success story.
An editorial by Dr. Benksim Abdelhafid (Morocco)
The 6th World Conference on Research Integrity (WCRI) is to be held on June 2-5, 2019 in Hong Kong.
The WCRI is the largest and most significant international conference on research integrity. Since the first conference in Lisbon in 2007, it has given researchers, teachers, funding agencies, government officials, journal editors, senior administrators, and research students opportunities to share experiences and to discuss and promote integrity in research. Read more:
TDR Clinical Research and Development Fellowships
Call for applications
Deadline for submission: 7 March 2019, 16:00 (GMT)
TDR provides fellowships for early- to mid-career researchers and clinical trial staff (e.g. clinicians, pharmacists, medical statisticians, data managers, other health researchers) in low- and middle-income countries (LMICs) to learn how to conduct clinical trials. Read more:
Meta-Analysis Workshops in New York, USA, and London, UK, in April and May 2019
Don't miss this exceptional opportunity to learn how to perform and report a Meta-analysis correctly. Two Meta-analysis workshops are organized in April and May 2019 by Dr. Michael Borenstein in New York, USA (April 08-10, 2019) and London, UK (May 27-29).
About the Instructor
Dr. Michael Borenstein, one of the authors of Introduction to Meta-Analysis, is widely recognized for his ability to make statistical concepts accessible to researchers as well as to statisticians. He has lectured widely on meta-analysis, including at the NIH, CDC, and FDA. Read more: