scholarly journals Implication of Polyhistidine, a Novel Apoptosis Inhibitor, in Inhibiting Lipopolysaccharide-Induced Apoptosis in Boar Sperm

Animals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 719 ◽  
Author(s):  
Tianzeng Song ◽  
Yi Shi ◽  
Yangang Wang ◽  
Izhar Hyder Qazi ◽  
Christiana Angel ◽  
...  
Keyword(s):  
Sperm Quality ◽  
Storage Conditions ◽  
Potential Implication ◽  
Liquid Storage ◽  
Boar Sperm ◽  
Tlr4 Agonist ◽  
Reasonable Evidence ◽  
Boar Semen ◽  
Induced Apoptosis ◽  
Apoptosis Inhibitor

Lipopolysaccharide (LPS) released from Gram-negative bacteria binds to toll-like receptor 4 (TLR4) and induces boar sperm apoptosis. Similarly, polyhistidine (pHis), a TLR4 agonist, can also bind to TLR4. We hypothesized that pHis could inhibit LPS-induced sperm apoptosis by competitively binding to TLR4 to then improve sperm quality. Therefore, the objective of this study was to examine whether pHis can inhibit LPS-induced sperm apoptosis and affect sperm quality. The results showed that the concentrations of bacterial colonies were significantly increased from 36 to 120 h under liquid storage conditions (p < 0.05); however, concentrations of LPS in boar semen showed a relatively constant trend (4.98 ± 1.55 EU/mL) following 120 h storage. The addition of 100 μg/mL pHis in the BTS extender significantly improved boar sperm motility and viability at 37 °C, and it significantly (p < 0.05) inhibited boar sperm apoptosis under liquid storage (17 °C) and at 37 °C incubation conditions. The co-treatment of LPS and pHis further confirmed that pHis played its role in inhibiting LPS-induced sperm apoptosis. In conclusion, our preliminary findings provide reasonable evidence that pHis could act as an inhibitor of LPS-induced apoptosis in boar sperm stored for longer periods of time. pHis might inhibit LPS-induced sperm apoptosis by competitively binding to TLR4. Nevertheless, further mechanistic studies are awaited to fully elucidate its potential implication in inhibiting LSP-induced apoptosis.

Effects of iodine methionine on boar sperm quality during liquid storage at 17°C

2017 ◽  
Vol 52 (6) ◽  
pp. 1061-1066 ◽  
Author(s):  
Q Fang ◽  
J Wang ◽  
YY Hao ◽  
H Li ◽  
JX Hu ◽  
...  
Keyword(s):  
Sperm Quality ◽  
Liquid Storage ◽  
Boar Sperm

Absence of seminal plasma from sperm-rich fraction decreases boar sperm quality characteristics during the course of liquid storage

2018 ◽  
Vol 198 ◽  
pp. 20-26 ◽  
Author(s):  
D.F. Leal ◽  
M.A. Torres ◽  
G.M. Ravagnani ◽  
S.M.M.K. Martins ◽  
F.V. Meirelles ◽  
...  
Keyword(s):  
Seminal Plasma ◽  
Sperm Quality ◽  
Quality Characteristics ◽  
Liquid Storage ◽  
Boar Sperm

Effects of Isatis root polysaccharide on boar sperm quality during liquid storage and in vitro fertilization

2019 ◽  
Vol 210 ◽  
pp. 106178 ◽  
Author(s):  
Zhiqiang Ren ◽  
Weike Shaoyong ◽  
Qian Li ◽  
Lu Ma ◽  
Junying Xiao ◽  
...  
Keyword(s):  
In Vitro Fertilization ◽  
Sperm Quality ◽  
Vitro Fertilization ◽  
Liquid Storage ◽  
Boar Sperm

scholarly journals The Antibacterial and Antioxidant Roles of Buckwheat Honey (BH) in Liquid Preservation of Boar Semen

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Qun Lan ◽  
Yingyu Xie ◽  
Jiahua Pan ◽  
Qiaohui Chen ◽  
Tianfang Xiao ◽  
...  
Keyword(s):  
Sperm Quality ◽  
Antioxidant Properties ◽  
Membrane Integrity ◽  
Storage Period ◽  
Antibiotic Use ◽  
Quality Parameters ◽  
Progressive Motility ◽  
Liquid Storage ◽  
Boar Semen

In the present study, we hypothesized that buckwheat honey (BH) should be regarded as a potential alternative to antibacterial and antioxidant agent in liquid storage of boar semen. To this end, boar semen was firstly studied for in vitro dose tolerability to BH by measuring sperm progressive motility. The optimum progressive motility of boar spermatozoa was observed in extender with 0.5% and 0.6% BH addition. Afterward, sperm quality parameters, bacterial profile and composition, total antioxidant (T-AOC), catalase (CAT), superoxide dismutase (SOD), and malondialdehyde (MDA) levels of control, BH supplementation, antibiotics supplementation, and incorporated supplementation were compared during liquid storage period, to further investigate antibacterial and antioxidant properties of BH. The results showed that BH supplementation significantly improved sperm motility, acrosome integrity, plasma membrane integrity, inhibited opportunistic bacterial growth, and altered microbial compositions at the end of preservation. Additionally, T-AOC, SOD, and CAT levels were significantly higher in the BH supplementation group than those in the control and antibiotic supplementation group, whereas MDA level exhibited opposite change pattern. Importantly, BH addition to the extender was able to exert a synergistic effect in combination of antibiotic use. Our findings suggested that the appropriate concentrations (0.5% and 0.6%) of BH were added to the extender could act antibacterial and antioxidant roles in liquid preservation of boar semen.

Effects of sulfanilamide on boar sperm quality, bacterial composition, and fertility during liquid storage at 17°C

2019 ◽  
Vol 90 (9) ◽  
pp. 1161-1169 ◽  
Author(s):  
Tian‐Yu Feng ◽  
Fa Ren ◽  
Qian Fang ◽  
Gui‐Chao Dai ◽  
Yu Li ◽  
...  
Keyword(s):  
Sperm Quality ◽  
Bacterial Composition ◽  
Liquid Storage ◽  
Boar Sperm

Effects of low-density lipoproteins extracted from different avian yolks on boar spermatozoa quality following freezing–thawing

Zygote ◽  
2012 ◽  
Vol 22 (2) ◽  
pp. 175-181 ◽  
Author(s):  
Peng Wang ◽  
Yan-Feng Wang ◽  
Chun-Wei Wang ◽  
Shu-Hai Bu ◽  
Jian-Hong Hu ◽  
...  
Keyword(s):  
Semen Quality ◽  
Sperm Quality ◽  
Membrane Integrity ◽  
Egg Yolk ◽  
Quality Parameters ◽  
Low Density Lipoproteins ◽  
Low Density ◽  
Boar Sperm ◽  
Boar Semen ◽  
Avian Egg

SummaryLow-density lipoproteins (LDL) is known to protect boar sperm during freezing–thawing, but little information is known about the effects of LDL extracted from different avian egg yolks on post-thaw boar semen quality. The purpose of this study was to compare and analyze the effects of LDL at various concentrations and different species on boar sperm quality after freezing–thawing. LDL extracted from the yolk of hen egg, duck egg, quail egg, pigeon egg or ostrich egg was added to the extender at the concentrations of 0.06, 0.07, 0.08, 0.09 and 0.1 g/ml, respectively, and their effects on frozen–thawed boar sperm quality were assessed. According to all measured parameters, the results showed that sperm motility, acrosome integrity and plasma membrane integrity were 43.20%, 52.57% and 48.13%, respectively, after being frozen–thawed with 0.09 g/ml LDL extracted from pigeon egg yolk. All these quality parameters were higher than that of other groups (P < 0.05). In conclusion, our results confirmed that LDL extracted from pigeon egg yolk had the best cryoprotective effects on frozen–thawed boar sperm among all of the groups supplemented with LDL from five kinds of avian egg in extender. The optimum concentration of LDL extracted from pigeon egg in boar semen freezing extender was 0.09 g/ml.

Effects of Bovine Serum Albumin on Boar Sperm Quality During Liquid Storage at 17°C

2015 ◽  
Vol 50 (2) ◽  
pp. 263-269 ◽  
Author(s):  
X-G Zhang ◽  
G-J Yan ◽  
J-Y Hong ◽  
Z-Z Su ◽  
G-S Yang ◽  
...  
Keyword(s):  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Bovine Serum ◽  
Sperm Quality ◽  
Liquid Storage ◽  
Boar Sperm

scholarly journals Proline Protects Boar Sperm against Oxidative Stress through Proline Dehydrogenase-Mediated Metabolism and the Amine Structure of Pyrrolidine

Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1549
Author(s):  
Chengwen Feng ◽  
Zhendong Zhu ◽  
Wenjing Bai ◽  
Rongnan Li ◽  
Yi Zheng ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Sperm Quality ◽  
Redox Homeostasis ◽  
Membrane Integrity ◽  
Underlying Mechanism ◽  
Proline Dehydrogenase ◽  
Progressive Motility ◽  
Boar Sperm ◽  
Amine Structure ◽  
Boar Semen

Proline was reported to improve sperm quality in rams, stallions, cynomolgus monkeys, donkeys, and canines during cryopreservation. However, the underlying mechanism remains unclear. The aim of this study was to investigate the effect of proline on boar semen during liquid storage at 17 °C and explore the underlying mechanism. Freshly ejaculated boar semen was supplemented with different concentrations of proline (0, 25, 50, 75, 100, 125 mM) and stored at 17 °C for nine days. Sperm motility patterns, membrane integrity, ATP (adenosine triphosphate), reactive oxygen species (ROS), and GSH (glutathione) levels, and the activities of catalase (CAT) and superoxide dismutase (SOD) were evaluated after storage for up to five days. It was observed that boar sperm quality gradually decreased with the extension of storage time, while the ROS levels increased. Addition of 75 mM proline not only significantly improved sperm membrane integrity, motility, and ATP levels but also maintained the redox homeostasis via increasing the GSH levels and activities of CAT and SOD. When hydrogen peroxide (H2O2) was used to induce oxidative stress, addition of proline significantly improved sperm quality and reduced ROS levels. Moreover, addition of proline also improved sperm quality during the rapid cooling process. Notably, addition of DL-PCA (DL-pipecolinic acid) rescued the reduction of progressive motility and total motility caused by H2O2, and THFA (tetrahydro-2-furoic acid) failed to provide protection. Furthermore, addition of proline at 75 mM increased the activity of proline dehydrogenase (PRODH) and attenuated the H2O2-induced reduction in progressive motility. These data demonstrate that proline protects sperm against oxidative stress through the secondary amine structure and proline dehydrogenase-mediated metabolism.

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