Sperm superoxide dismutase is associated with bull fertility

2016 ◽  
Vol 28 (9) ◽  
pp. 1405 ◽  
Author(s):  
Kamilah E. Grant ◽  
Rodrigo V. de Oliveira ◽  
Bettye Sue Hennington ◽  
Aruna Govindaraju ◽  
Andy Perkins ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Biological Networks ◽  
Sperm Quality ◽  
High Fertility ◽  
Protein Markers ◽  
Mammalian Development ◽  
Sperm Proteins ◽  
Thomson Reuters ◽  
Early Mammalian Development

Decreasing mammalian fertility and sperm quality have created an urgent need to find effective methods to distinguish non-viable from viable fertilising spermatozoa. The aims of the present study were to evaluate expression levels of β-tubulin 2C (TUBB2C), heat shock protein 10 (HSP10), hexokinase 1 (HXK1) and superoxide dismutase 1 (SOD1) in spermatozoa from Holstein bulls with varying fertility using western blotting and to analyse the biological networks of these key sperm proteins using a bioinformatics software (Metacore; Thomson-Reuters, Philadelphia, PA, USA). The rationales behind this study were that the sperm proteins play crucial roles in fertilisation and early embryonic development in mammals and ascertaining the biological networks of the proteins helps us better understand sperm physiology and early mammalian development. The results showed that expression of SOD1 was higher in spermatozoa from high fertility bulls (P < 0.05) and that SOD1 is the best protein to diagnose bulls based on the fertility index (P < 0.05). Using Metacore analysis, we identified an SOD1 network with pathways and linkages with other relevant molecules. We concluded that SOD1 sperm expression is associated with in vivo bull fertility. The findings are important because they illuminate molecular and cellular determinants of sperm viability and the identified protein markers can be used to determine bull fertility.

scholarly journals Sperm protein markers for Holstein bull fertility at National Artificial Insemination Centers in Indonesia

2020 ◽  
Vol 13 (5) ◽  
pp. 947-955
Author(s):  
Zulfi Nur Amrina Rosyada ◽  
Mokhamad Fakhrul Ulum ◽  
Ligaya I. T. A. Tumbelaka ◽  
Bambang Purwantara
Keyword(s):  
Artificial Insemination ◽  
Sperm Quality ◽  
High Fertility ◽  
Fertility Level ◽  
Sperm Protein ◽  
Sperm Proteins ◽  
Frozen Semen ◽  
Sds Page ◽  
Microscopic Evaluation ◽  
Holstein Bulls

Background and Aim: Holstein cows and heifers are widely bred in Indonesia by artificial insemination (AI) to increase population and milk production. Sperm fertility is modulated by genetic factors, but the analysis of sperm quality is still based on macro- and microscopic characteristics. This study aimed to analyze both sperm quality and proteins of Holstein bulls at different fertility levels. Materials and Methods: The frozen semen samples were collected from the Indonesia National AI Center. They were classified based on the reproductive efficiency data and were grouped into high fertile (HF) and low fertile (LF). Sperm qualities were evaluated by microscopic evaluation. The Holstein sperm proteins were extracted using phenylmethanesulfonyl fluoride as a protease inhibitor and the benzidine detergent extraction method. Discontinuous sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) was conducted to analyze the molecular weights (MWs) of the sperm proteins. The data obtained were analyzed by a t-test using the one-factor bull fertility level, and Spearman's correlation analysis was used to identify the correlation between the sperm microscopic evaluation parameters and protein bands. Results: The sperm motility post-freeze thawing was not significantly different between the HF and LF (p>0.05). The HF level had a higher percentage of viability, intact plasma membrane integrity, and intact acrosomes than the LF (p<0.05). Five protein bands were found in the SDS-PAGE of sperm proteins of Holstein bulls with different concentrations. Sperm proteins with MWs of 17.51 kDa, 14.87 kDa, 33.71 kDa, and 41.97 kDa were abundant in the Holstein bulls with an HF level, while 55 kDa proteins were abundant in the LF level of Holstein bulls. The sperm of Holstein bulls in the HF level contained proteins of about 33.71 kDa that were not detected in the LF. Conclusion: The sperm protein with a molecular weight of 33.71 kDa was predicted to be a specific protein biomarker that influences bull fertility. Sperm fertilization abilities were also determined by the sperm proteins, the morphology of sperm acrosomes, and the quality of plasma membranes. This method can be used to select bulls with high fertility to increase the population of Holstein bulls.

scholarly journals Free-radical production after post-thaw incubation of ram spermatozoa is related to decreased in vivo fertility

2015 ◽  
Vol 27 (8) ◽  
pp. 1187 ◽  
Author(s):  
Enrique Del Olmo ◽  
Alfonso Bisbal ◽  
Olga García-Álvarez ◽  
Alejandro Maroto-Morales ◽  
Manuel Ramón ◽  
...  
Keyword(s):  
Flow Cytometry ◽  
Pregnancy Rate ◽  
Male Fertility ◽  
Sperm Quality ◽  
Terminal Deoxynucleotidyl Transferase ◽  
Sperm Chromatin ◽  
High Fertility ◽  
Ros Production ◽  
Sperm Viability

The aim of the present study was to evaluate the effect of sperm reactive oxygen species (ROS) production and DNA changes on male fertility. For that purpose, six rams with significantly different pregnancy rates were used; these were classified as having high fertility, i.e. 59.4% average pregnancy rate, or low fertility, i.e. 23.1% average pregnancy rate. Sperm quality was assessed after a two-step process of sample thawing followed by an incubation of 2 h, either in the freezing extender (37°C) or after dilution in synthetic oviductal fluid (SOF; 38°C, 5%CO2). Sperm viability (YO-PRO-1), ROS production (5-(and-6)-chloromethyl-2′,7′-dichlorodihydrofluorescein acetyl ester (CM-H2DCFDA)) and undamaged chromatin (sperm chromatin structure assay, terminal deoxynucleotidyl transferase-mediated dUTP nick-end labelling, chromomycin A3) were evaluated by flow cytometry. Although no significant differences in sperm viability were observed, our results showed increased ROS production during incubation in the freezing extender as well as in SOF medium. Comparison between fertility groups showed significant differences in ROS production after 2 h of incubation for the two treatments. Regarding DNA integrity, our results showed no significant differences either between treatments and incubation times or fertility groups. Linear regression analysis showed that ROS production determined by CM-H2DCFDA was a good indicator parameter for in vivo male fertility of SOF-incubated samples, yielding a fair correlation between both parameters (r = –0.92). These results indicate that detection of ROS production by CM-H2DCFDA and flow cytometry after 2 h of incubation in SOF could be a useful procedure for predicting fertility of ram spermatozoa.

scholarly journals Multiparametric Study of Antioxidant Effect on Ram Sperm Cryopreservation—From Field Trials to Research Bench

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 283
Author(s):  
Marta F. Riesco ◽  
Mercedes Alvarez ◽  
Luis Anel-Lopez ◽  
Marta Neila-Montero ◽  
Cristina Palacin-Martinez ◽  
...  
Keyword(s):  
Sperm Quality ◽  
Redox Balance ◽  
Field Trials ◽  
Low Fertility ◽  
High Fertility ◽  
Sperm Cryopreservation ◽  
Ram Sperm ◽  
Positive Effect

The optimization of sperm cryopreservation protocols in ram is a feasible tool to reinforce artificial insemination technologies considering the desirable application of sperm by vaginal/cervical or transcervical deposition. Cryopreservation provokes different types of damage on spermatozoa and many of these detrimental effects are triggered by redox deregulation. For this reason, the antioxidant supplementation in sperm cryopreservation protocols to decrease reactive oxygen species (ROS) levels and to equilibrate redox status has been widely employed in different species. Despite this, more fertility trials are necessary to provide the definitive tool to ensure the antioxidant effectiveness on sperm quality. For this reason, in this work, we performed a multiparametric analysis of some previously tested antioxidants (crocin, GSH and Trolox) on ram sperm cryopreservation from field trials to sperm quality analyses focused on new strategies to measure redox balance. Attending to fertility trial, Trolox supplementation registered an improvement concerning to fertility (when we considered high fertility males) and multiple lambing frequency and other complementary and descriptive data related to lambing performance such as prolificacy and fecundity. This positive effect was more evident in multiple lambing frequency when we considered low fertility males than in global male analysis. In vitro analyses of sperm quality confirmed in vivo trials registering a positive effect on sperm viability and redox balance. In this study, we provided the definitive evidence that the role of trolox on redox balance maintenance has a direct effect on fertility parameters, such as prolificacy. The effectiveness of antioxidant treatments was tested, for the first time in ovine species, using an integrative and multiparametric approach combining in vivo and in vitro analyses and novel approaches, such as RedoxSYS. These types of strategies should be applied to improve sperm conservation methods and optimize AI technologies upgrading the correlation between in vitro and in vivo analyses.

scholarly journals Self-organization of stem cells into embryos: A window on early mammalian development

Science ◽  
2019 ◽  
Vol 364 (6444) ◽  
pp. 948-951 ◽  
Author(s):  
Marta N. Shahbazi ◽  
Eric D. Siggia ◽  
Magdalena Zernicka-Goetz
Keyword(s):  
Stem Cells ◽  
Three Dimensional ◽  
Embryonic Stem ◽  
Self Organization ◽  
In Vivo Studies ◽  
Mammalian Development ◽  
Intrinsic Capacity ◽  
Three Dimensional Models ◽  
Early Mammalian Development

Embryonic development is orchestrated by robust and complex regulatory mechanisms acting at different scales of organization. In vivo studies are particularly challenging for mammals after implantation, owing to the small size and inaccessibility of the embryo. The generation of stem cell models of the embryo represents a powerful system with which to dissect this complexity. Control of geometry, modulation of the physical environment, and priming with chemical signals reveal the intrinsic capacity of embryonic stem cells to make patterns. Adding the stem cells for the extraembryonic lineages generates three-dimensional models that are more autonomous from the environment and recapitulate many features of the pre- and postimplantation mouse embryo, including gastrulation. Here, we review the principles of self-organization and how they set cells in motion to create an embryo.

scholarly journals Essential role for Max in early embryonic growth and development

2000 ◽  
Vol 14 (1) ◽  
pp. 17-22 ◽  
Author(s):  
Hong Shen-Li ◽  
Rónán C. O'Hagan ◽  
Harry Hou ◽  
James W. Horner ◽  
Han-Woong Lee ◽  
...  
Keyword(s):  
Growth And Development ◽  
Essential Role ◽  
Brdu Incorporation ◽  
Mammalian Development ◽  
Stages Of Development ◽  
Developmental Arrest ◽  
Embryonic Growth ◽  
Early Mammalian Development

Loss of Max function in the mouse resulted in generalized developmental arrest of both embryonic and extraembryonic tissues at early postimplantation (∼E5.5–6.5), coincident with loss or dilution of maternal Max stores in the expanding embryo in vivo and in blastocyst outgrowths in vitro. Developmentally arrested embryos were reduced in size and exhibited widespread cytological degeneration and feeble BrdU incorporation. Max and, by extension, the Myc superfamily, serve essential roles in early mammalian development and a maternal reservoir of Max exists in sufficient amount to sustain Myc superfamily function through preimplantation stages of development.

scholarly journals The transition from meiotic to mitotic spindle assembly is gradual during early mammalian development

2012 ◽  
Vol 198 (3) ◽  
pp. 357-370 ◽  
Author(s):  
Aurélien Courtois ◽  
Melina Schuh ◽  
Jan Ellenberg ◽  
Takashi Hiiragi
Keyword(s):  
Mouse Embryo ◽  
Mitotic Spindle ◽  
Spindle Pole ◽  
Gradual Transition ◽  
Mammalian Development ◽  
Preimplantation Stage ◽  
Unique System ◽  
Mitotic Spindle Assembly ◽  
Early Mammalian Development

The transition from meiosis to mitosis, classically defined by fertilization, is a fundamental process in development. However, its mechanism remains largely unexplored. In this paper, we report a surprising gradual transition from meiosis to mitosis over the first eight divisions of the mouse embryo. The first cleavages still largely share the mechanism of spindle formation with meiosis, during which the spindle is self-assembled from randomly distributed microtubule-organizing centers (MTOCs) without centrioles, because of the concerted activity of dynein and kinesin-5. During preimplantation development, the number of cellular MTOCs progressively decreased, the spindle pole gradually became more focused, and spindle length progressively scaled down with cell size. The typical mitotic spindle with centrin-, odf2-, kinesin-12–, and CP110-positive centrosomes was established only in the blastocyst. Overall, the transition from meiosis to mitosis progresses gradually throughout the preimplantation stage in the mouse embryo, thus providing a unique system to study the mechanism of centrosome biogenesis in vivo.

Superoxide, Xanthine Oxidase and Platelet Reactions: Further Studies on Mechanisms by which Oxidants Influence Platelets

1981 ◽  
Vol 45 (03) ◽  
pp. 290-293 ◽  
Author(s):  
Peter H Levine ◽  
Danielle G Sladdin ◽  
Norman I Krinsky
Keyword(s):  
Superoxide Dismutase ◽  
Cytochrome C ◽  
Xanthine Oxidase ◽  
Direct Effect ◽  
Platelet Function ◽  
Experimental Conditions ◽  
Release Reaction

SummaryIn the course of studying the effects on platelets of the oxidant species superoxide (O- 2), Of was generated by the interaction of xanthine oxidase plus xanthine. Surprisingly, gel-filtered platelets, when exposed to xanthine oxidase in the absence of xanthine substrate, were found to generate superoxide (O- 2), as determined by the reduction of added cytochrome c and by the inhibition of this reduction in the presence of superoxide dismutase.In addition to generating Of, the xanthine oxidase-treated platelets display both aggregation and evidence of the release reaction. This xanthine oxidase induced aggreagtion is not inhibited by the addition of either superoxide dismutase or cytochrome c, suggesting that it is due to either a further metabolite of O- 2, or that O- 2 itself exerts no important direct effect on platelet function under these experimental conditions. The ability of Of to modulate platelet reactions in vivo or in vitro remains in doubt, and xanthine oxidase is an unsuitable source of O- 2 in platelet studies because of its own effects on platelets.

scholarly journals Superoxide Dismutase 1 Nanoparticles (Nano-SOD1) as a Potential Drug for the Treatment of Inflammatory Eye Diseases

Biomedicines ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 396
Author(s):  
Alexander N. Vaneev ◽  
Olga A. Kost ◽  
Nikolay L. Eremeev ◽  
Olga V. Beznos ◽  
Anna V. Alova ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Reproductive Toxicity ◽  
Clinical Problem ◽  
Eye Diseases ◽  
Therapeutic Modality ◽  
Side Reactions ◽  
Copper Zinc Superoxide Dismutase ◽  
Tissue Degeneration ◽  
Endogenous Antioxidant

Inflammatory eye diseases remain the most common clinical problem in ophthalmology. The secondary processes associated with inflammation, such as overproduction of reactive oxygen species (ROS) and exhaustion of the endogenous antioxidant system, frequently lead to tissue degeneration, vision blurring, and even blindness. Antioxidant enzymes, such as copper–zinc superoxide dismutase (SOD1), could serve as potent scavengers of ROS. However, their delivery into the eye compartments represents a major challenge due to the limited ocular penetration. This work presents a new therapeutic modality specifically formulated for the eye on the basis of multilayer polyion complex nanoparticles of SOD1 (Nano-SOD1), which is characterized by appropriate storage stability and pronounced therapeutic effect without side reactions such as eye irritation; acute, chronic, and reproductive toxicity; allergenicity; immunogenicity; mutagenicity even at high doses. The ability of Nano-SOD1 to reduce inflammatory processes in the eye was examined in vivo in rabbits with a model immunogenic uveitis—the inflammation of the inner vascular tract of the eye. It was shown during preclinical studies that topical instillations of Nano-SOD1 were much more effective compared to the free enzyme in decreasing uveitis manifestations. In particular, we noted statistically significant differences in such inflammatory signs in the eye as corneal and conjunctival edema, iris hyperemia, and fibrin clots. Moreover, Nano-SOD1 penetrates into interior eye structures more effectively than SOD itself and retains enzyme activity in the eye for a much longer period of time, decreasing inflammation and restoring antioxidant activity in the eye. Thus, the presented Nano-SOD1 can be considered as a potentially useful therapeutic agent for the treatment of ocular inflammatory disorders.

scholarly journals Stable Mn(III) porphyrins mimic superoxide dismutase in vitro and substitute for it in vivo.

1994 ◽  
Vol 269 (38) ◽  
pp. 23471-23476 ◽  
Author(s):  
K.M. Faulkner ◽  
S.I. Liochev ◽  
I. Fridovich
Keyword(s):  
Superoxide Dismutase
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