PMID- 22470450 OWN - NLM STAT- MEDLINE DCOM- 20120803 LR - 20211021 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 7 IP - 3 DP - 2012 TI - Effects of hepatitis B virus S protein exposure on sperm membrane integrity and functions. PG - e33471 LID - 10.1371/journal.pone.0033471 [doi] LID - e33471 AB - BACKGROUND: Hepatitis B is a public health problem worldwide. Viral infection can affect a man's fertility, but only scant information about the influence of hepatitis B virus (HBV) infection on sperm quality is available. The purpose of this study was to investigate the effect of hepatitis B virus S protein (HBs) on human sperm membrane integrity and functions. METHODS/PRINCIPAL FINDINGS: Reactive oxygen species (ROS), lipid peroxidation (LP), total antioxidant capacity (TAC) and phosphatidylserine (PS) externalization were determined. The terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assays and flow cytometric analyses were performed. (1) After 3 h incubation with 25 microg/ml of HBs, the average rates of ROS positive cells, annexin V-positive/propidium iodide (PI)-negative cells, Caspases-3,-8,-9 positive cells and TUNEL-positive cells were significantly increased in the test groups as compared to those in the control groups, while TAC level was decreased when compared with the control. The level of malondialdehyde (MDA) in the sperm cells exposed to 50 microg/ml of HBs for 3 h was significantly higher than that in the control (P<0.05-0.01). (2) HBs increased the MDA levels and the numbers of ROS positive cells, annexin V-positive/PI-negative cells, caspases-3, -8, -9 positive cells and TUNEL-positive cells in a dose-dependent manner. (3) HBs monoclonal antibody (MAb) and N-Acetylcysteine (NAC) reduced the number of ROS-positive sperm cells. (4) HBs decreased the TAC levels in sperm cells in a dose-dependent manner. CONCLUSION: HBs exposure could lead to ROS generation, lipid peroxidation, TAC reduction, PS externalization, activation of caspases, and DNA fragmentation, resulting in increased apoptosis of sperm cells and loss of sperm membrane integrity and causing sperm dysfunctions. FAU - Kang, XiangJin AU - Kang X AD - Research Center for Reproductive Medicine, Shantou University Medical College, Shantou, China. FAU - Xie, QingDong AU - Xie Q FAU - Zhou, XiaoLing AU - Zhou X FAU - Li, FangZheng AU - Li F FAU - Huang, JiHua AU - Huang J FAU - Liu, DongLing AU - Liu D FAU - Huang, TianHua AU - Huang T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120328 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Annexin A5) RN - 0 (Antibodies, Monoclonal) RN - 0 (Hepatitis B Surface Antigens) RN - 0 (Phosphatidylserines) RN - 0 (Reactive Oxygen Species) RN - 36015-30-2 (Propidium) RN - 4Y8F71G49Q (Malondialdehyde) RN - EC 3.4.22.- (Caspase 3) RN - EC 3.4.22.- (Caspase 8) RN - EC 3.4.22.- (Caspase 9) RN - WYQ7N0BPYC (Acetylcysteine) SB - IM MH - Acetylcysteine/pharmacology MH - Annexin A5/metabolism MH - Antibodies, Monoclonal/immunology/pharmacology MH - Apoptosis/drug effects MH - Caspase 3/metabolism MH - Caspase 8/metabolism MH - Caspase 9/metabolism MH - Cell Membrane/drug effects MH - Chromosomes/metabolism MH - DNA Damage/drug effects MH - Hepatitis B Surface Antigens/immunology/*pharmacology MH - Hepatitis B virus/metabolism MH - Humans MH - Lipid Peroxidation/drug effects MH - Male MH - Malondialdehyde/metabolism MH - Phosphatidylserines/metabolism MH - Propidium/pharmacology MH - Reactive Oxygen Species/metabolism MH - Spermatozoa/*drug effects/metabolism PMC - PMC3314651 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2012/04/04 06:00 MHDA- 2012/08/04 06:00 PMCR- 2012/03/28 CRDT- 2012/04/04 06:00 PHST- 2011/11/07 00:00 [received] PHST- 2012/02/09 00:00 [accepted] PHST- 2012/04/04 06:00 [entrez] PHST- 2012/04/04 06:00 [pubmed] PHST- 2012/08/04 06:00 [medline] PHST- 2012/03/28 00:00 [pmc-release] AID - PONE-D-11-22071 [pii] AID - 10.1371/journal.pone.0033471 [doi] PST - ppublish SO - PLoS One. 2012;7(3):e33471. doi: 10.1371/journal.pone.0033471. Epub 2012 Mar 28.