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Peña-Delgado V, Noya A, Carvajal-Serna M, Abecia JA, Pérez-Pe R, Casao A. Differential effect of melatonin on ram spermatozoa depending on the allelic variant of the RsaI polymorphism of the MTR1A gene, incubation medium and season. Reprod Fertil Dev 2024; 36:NULL. [PMID: 38905444 DOI: 10.1071/rd23233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 06/03/2024] [Indexed: 06/23/2024] Open
Abstract
Context The Rsa I polymorphism of the melatonin receptor MTNR1A gene affects seasonal reproduction in sheep, but its effect on ram spermatozoa and their response to melatonin is unknown. Aims This study aims to evaluate whether Rsa I polymorphism of the MTNR1A gene influences the response of ram spermatozoa to in vitro added melatonin. Methods Spermatozoa from rams carrying different Rsa I allelic variants were incubated with melatonin in a TALP medium or a capacitation-triggering medium during the reproductive and non-reproductive seasons. After incubation, sperm motility, membrane integrity, mitochondria activity, oxidative damage, apoptotic markers and capacitation status were assessed. Key results In the reproductive season, the T/T genotype was related to some adverse effects of melatonin when spermatozoa were incubated in TALP medium, whereas the C/C genotype was linked with adverse effects when the hormone was added in a capacitation-triggering medium. The decapacitating effect of melatonin on spermatozoa was also different depending on genotype. Conclusions The melatonin effect on spermatozoa from rams carrying different Rsa I genotypes differed depending on the season and the medium. Implications The knowledge of the Rsa I allelic variant of the MTNR1A gene of rams could be helpful when carrying out in vitro reproductive techniques in the ovine species.
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Affiliation(s)
- Victoria Peña-Delgado
- BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain
| | - Agustí Noya
- BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain
| | - Melissa Carvajal-Serna
- BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain
| | - José A Abecia
- BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain
| | - Rosaura Pérez-Pe
- BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain
| | - Adriana Casao
- BIOFITER-IUCA, Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet 177, 50013 Zaragoza, Spain
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Liang J, Han J, Gao X, Jia H, Li R, Tse ECM, Li Y. Clickable APEX2 Probes for Enhanced RNA Proximity Labeling in Live Cells. Anal Chem 2024; 96:685-693. [PMID: 38099807 DOI: 10.1021/acs.analchem.3c03614] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
Although APEX2-mediated proximity labeling has been extensively implemented for studying RNA subcellular localization in live cells, the biotin-phenoxyl radical used for labeling RNAs has a relatively low efficiency, which can limit its compatibility with other profiling methods. Herein, a set of phenol derivatives were designed as APEX2 probes through balancing reactivity, hydrophilicity, and lipophilicity. Among these derivatives, Ph_N3 exhibited reliable labeling ability and enabled two biotinylation routes for downstream analysis. As a proof of concept, we used APEX2/Ph_N3 labeling with high-throughput sequencing analysis to examine the transcriptomes in the mitochondrial matrix, demonstrating high sensitivity and specificity. To further expand the utility of Ph_N3, we employed mechanistically orthogonal APEX2 and singlet oxygen (1O2)-mediated strategies for dual location labeling in live cells. Specifically, DRAQ5, a DNA-intercalating photosensitizer, was applied for nucleus-restricted 1O2 labeling. We validated the orthogonality of APEX2/Ph_N3 and DRAQ5-1O2 at the imaging level, providing an attractive and feasible approach for future studies of RNA translocation in live cells.
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Affiliation(s)
- Jiying Liang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Jinghua Han
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Xutao Gao
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Han Jia
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Ran Li
- Academy for Advanced Interdisciplinary Studies, PKU-Tsinghua Center for Life Science, Peking University, Beijing 100871, China
| | - Edmund C M Tse
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
- CAS-HKU Joint Laboratory of Metallomics on Health and Environment, The University of Hong Kong, Pokfulam Road, Hong Kong, China
- Laboratory for Synthetic Chemistry and Chemical Biology Limited, New Territories, Hong Kong, China
| | - Ying Li
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
- Laboratory for Synthetic Chemistry and Chemical Biology Limited, New Territories, Hong Kong, China
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3
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Gacem S, Castello-Ruiz M, Hidalgo CO, Tamargo C, Santolaria P, Soler C, Yániz JL, Silvestre MA. Bull Sperm SWATH-MS-Based Proteomics Reveals Link between High Fertility and Energy Production, Motility Structures, and Sperm-Oocyte Interaction. J Proteome Res 2023; 22:3607-3624. [PMID: 37782577 PMCID: PMC10629479 DOI: 10.1021/acs.jproteome.3c00461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Indexed: 10/04/2023]
Abstract
The prediction of male or semen fertility potential remains a persistent challenge that has yet to be fully resolved. This work analyzed several in vitro parameters and proteome of spermatozoa in bulls cataloged as high- (HF; n = 5) and low-field (LF; n = 5) fertility after more than a thousand artificial inseminations. Sperm motility was evaluated by computer-assisted sperm analysis. Sperm viability, mitochondrial membrane potential (MMP) and reactive oxygen species (mROS) of spermatozoa were assessed by flow cytometry. Proteome was evaluated by the SWATH-MS procedure. Spermatozoa of HF bulls showed significantly higher total motility than the LF group (41.4% vs 29.7%). Rates of healthy sperm (live, high MMP, and low mROS) for HF and LF bull groups were 49% and 43%, respectively (p > 0.05). Spermatozoa of HF bulls showed a higher presence of differentially abundant proteins (DAPs) related to both energy production (COX7C), mainly the OXPHOS pathway, and the development of structures linked with the motility process (TPPP2, SSMEM1, and SPAG16). Furthermore, we observed that equatorin (EQTN), together with other DAPs related to the interaction with the oocyte, was overrepresented in HF bull spermatozoa. The biological processes related to protein processing, catabolism, and protein folding were found to be overrepresented in LF bull sperm in which the HSP90AA1 chaperone was identified as the most DAP. Data are available via ProteomeXchange with identifier PXD042286.
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Affiliation(s)
- Sabrina Gacem
- Departamento
de Biología Celular, Biología Funcional y Antropología
Física, Universitat de València, 46100 Valencia, Spain
- Departamento
de Medicina y Cirugía Animal, Universitat
Autònoma de Barcelona, 08193 Barcelona, Spain
| | - María Castello-Ruiz
- Departamento
de Biología Celular, Biología Funcional y Antropología
Física, Universitat de València, 46100 Valencia, Spain
- Unidad
Mixta de Investigación Cerebrovascular, Instituto de Investigación
Sanitaria La Fe, Hospital Universitario
y Politécnico La Fe, 46026 Valencia, Spain
| | - Carlos O. Hidalgo
- Animal
Selection and Reproduction Area, Regional
Agrifood Research and Development Service (SERIDA), 33394 Deva, Gijón, Spain
| | - Carolina Tamargo
- Animal
Selection and Reproduction Area, Regional
Agrifood Research and Development Service (SERIDA), 33394 Deva, Gijón, Spain
| | - Pilar Santolaria
- BIOFITER
Research Group, Institute of Environmental Sciences (IUCA), University of Zaragoza, 22071 Huesca, Spain
| | - Carles Soler
- Departamento
de Biología Celular, Biología Funcional y Antropología
Física, Universitat de València, 46100 Valencia, Spain
| | - Jesús L. Yániz
- BIOFITER
Research Group, Institute of Environmental Sciences (IUCA), University of Zaragoza, 22071 Huesca, Spain
| | - Miguel A. Silvestre
- Departamento
de Biología Celular, Biología Funcional y Antropología
Física, Universitat de València, 46100 Valencia, Spain
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Gao Y, Huang W, Jiang N, Fang JKH, Hu M, Shang Y, Wang Y. Combined effects of microfibers and polychlorinated biphenyls on the immune function of hemocytes in the mussel Mytilus coruscus. MARINE ENVIRONMENTAL RESEARCH 2023; 192:106214. [PMID: 37865594 DOI: 10.1016/j.marenvres.2023.106214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/20/2023] [Accepted: 09/26/2023] [Indexed: 10/23/2023]
Abstract
Numerous studies have shown that microplastics can interact with other pollutants in the environment to produce synergistic effects, leading to more serious impacts. To date, there is little consensus on the combined effects of microfibers (MFs) and polychlorinated biphenyls (PCBs, Aroclor 1254), two legacy and alarming environmental pollutants. There is an urgent need to assess the impact of combined exposures on bivalve immune defences. In this study, we assessed the immune response of the mussels (Mytilus coruscus) hemocyte to MFs and PCBs alone and in combination by using flow cytometry. M. coruscus were exposed to MFs (1000 pieces/L) and PCBs (PCBs) (100 ng/L and 1000 ng/L) alone or in combination for 14 consecutive days and recovered for 7 days. The hemocyte of M. coruscus was collected on day 7, 14 and 21. MF exposure alone had no effect on the hemocyte. The total hemocyte count (THC), esterase (EA), lysosomal contents (LC), mitochondrial number (MN) and mitochondrial membrane potential (MMP) of mussels showed a decreasing trend with increasing PCB concentrations, both individually and in combination; The decreases in EA, MN and MMP were associated with the induction of reactive oxygen species (ROS). Hemocyte mortality (HM) was associated with a decrease in THC. Combined exposure to MFs and PCBs would exacerbate the effects on hemocyte immunity. These new findings improve our understanding of the toxic effects of MFs and organic chemical pollutants, and demonstrate the potential mechanism of PCBs to bivalves through changes in hemolymph immunity-related indicators.
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Affiliation(s)
- Yiming Gao
- International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China
| | - Wei Huang
- State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, China; Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, China
| | - Ningjin Jiang
- International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China
| | - James K H Fang
- Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China
| | - Menghong Hu
- International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China
| | - Yueyong Shang
- International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, 201306, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China.
| | - Youji Wang
- International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, 201306, China; State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China.
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Panda SP, Singh V. The Dysregulated MAD in Mad: A Neuro-theranostic Approach Through the Induction of Autophagic Biomarkers LC3B-II and ATG. Mol Neurobiol 2023; 60:5214-5236. [PMID: 37273153 DOI: 10.1007/s12035-023-03402-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 05/24/2023] [Indexed: 06/06/2023]
Abstract
The word mad has historically been associated with the psyche, emotions, and abnormal behavior. Dementia is a common symptom among psychiatric disorders or mad (schizophrenia, depression, bipolar disorder) patients. Autophagy/mitophagy is a protective mechanism used by cells to get rid of dysfunctional cellular organelles or mitochondria. Autophagosome/mitophagosome abundance in autophagy depends on microtubule-associated protein light chain 3B (LC3B-II) and autophagy-triggering gene (ATG) which functions as an autophagic biomarker for phagophore production and quick mRNA disintegration. Defects in either LC3B-II or the ATG lead to dysregulated mitophagy-and-autophagy-linked dementia (MAD). The impaired MAD is closely associated with schizophrenia, depression, and bipolar disorder. The pathomechanism of psychosis is not entirely known, which is the severe limitation of today's antipsychotic drugs. However, the reviewed circuit identifies new insights that may be especially helpful in targeting biomarkers of dementia. Neuro-theranostics can also be achieved by manufacturing either bioengineered bacterial and mammalian cells or nanocarriers (liposomes, polymers, and nanogels) loaded with both imaging and therapeutic materials. The nanocarriers must cross the BBB and should release both diagnostic agents and therapeutic agents in a controlled manner to prove their effectiveness against psychiatric disorders. In this review, we highlighted the potential of microRNAs (miRs) as neuro-theranostics in the treatment of dementia by targeting autophagic biomarkers LC3B-II and ATG. Focus was also placed on the potential for neuro-theranostic nanocells/nanocarriers to traverse the BBB and induce action against psychiatric disorders. The neuro-theranostic approach can provide targeted treatment for mental disorders by creating theranostic nanocarriers.
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Affiliation(s)
- Siva Prasad Panda
- Institute of Pharmaceutical Research, GLA University, Uttar Pradesh, Mathura, India.
| | - Vikrant Singh
- Research Scholar, Institute of Pharmaceutical Research, GLA University, Uttar Pradesh, Mathura, India
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6
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Jurado-Campos A, Soria-Meneses PJ, Arenas-Moreira M, Alonso-Moreno C, Rodríguez-Robledo V, Soler AJ, Garde JJ, Del Rocío Fernández-Santos M. Minimizing sperm oxidative stress using nanotechnology for breeding programs in rams. J Anim Sci Biotechnol 2023; 14:106. [PMID: 37559077 PMCID: PMC10413538 DOI: 10.1186/s40104-023-00907-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 06/12/2023] [Indexed: 08/11/2023] Open
Abstract
BACKGROUND Artificial insemination (AI) is a routine breeding technology in animal reproduction. Nevertheless, the temperature-sensitive nature and short fertile lifespan of ram sperm samples hamper its use in AI. In this sense, nanotechnology is an interesting tool to improve sperm protection due to the development of nanomaterials for AI, which could be used as delivery vehicles. In this work, we explored the feasibility of vitamin E nanoemulsion (NE) for improving sperm quality during transport. RESULTS With the aim of evaluating this proposal, ejaculates of 7 mature rams of Manchega breed were collected by artificial vagina and extended to 60 × 106 spz/mL in Andromed®. Samples containing control and NE (12 mmol/L) with and without exogenous oxidative stress (100 µmol/L Fe2+/ascorbate) were stored at 22 and 15 ºC and motility (CASA), viability (YO-PRO/PI), acrosomal integrity (PNA-FITC/PI), mitochondrial membrane potential (Mitotracker Deep Red 633), lipoperoxidation (C11 BODIPY 581/591), intracellular reactive oxygen species (ROS) production and DNA status (SCSA®) monitored during 96 h. Our results show that NE could be used to maintain ram spermatozoa during transport at 15 and 22 ºC for up to 96 h, with no appreciable loss of kinematic and physiological characteristics of freshly collected samples. CONCLUSIONS The storage of ram spermatozoa in liquid form for 2-5 d with vitamin E nanoemulsions may lead more flexibility to breeders in AI programs. In view of the potential and high versatility of these nanodevices, further studies are being carried out to assess the proposed sperm preservation medium on fertility after artificial insemination.
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Affiliation(s)
| | | | - María Arenas-Moreira
- Departamento de Química Inorgánica, Orgánica Y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Farmacia, Universidad de Castilla-La Mancha, 02008, Albacete, Spain
- Centro Regional de Investigación Biomédicas, Unidad nanoDrug, Universidad de Castilla-La Mancha, 02008, Albacete, Spain
| | - Carlos Alonso-Moreno
- Departamento de Química Inorgánica, Orgánica Y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Farmacia, Universidad de Castilla-La Mancha, 02008, Albacete, Spain
- Centro Regional de Investigación Biomédicas, Unidad nanoDrug, Universidad de Castilla-La Mancha, 02008, Albacete, Spain
| | - Virginia Rodríguez-Robledo
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario, S/N, 02071, Albacete, Spain
- Facultad de Farmacia, Universidad de Castilla La Mancha, 02071, Albacete, Spain
| | - Ana Josefa Soler
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario, S/N, 02071, Albacete, Spain
| | - José Julián Garde
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario, S/N, 02071, Albacete, Spain
| | - María Del Rocío Fernández-Santos
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario, S/N, 02071, Albacete, Spain.
- Facultad de Farmacia, Universidad de Castilla La Mancha, 02071, Albacete, Spain.
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İnanç ME, Güngör Ş, Avdatek F, Yeni D, Gülhan MF, Olğaç KT, Denk B, Taşdemir U. Thymoquinone improves motility, plasma membrane integrity and
DNA
integrity of frozen–thawed ram semen. Andrologia 2022; 54:e14547. [DOI: 10.1111/and.14547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 04/25/2022] [Accepted: 07/20/2022] [Indexed: 11/30/2022] Open
Affiliation(s)
- Muhammed Enes İnanç
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine Burdur Mehmet Akif Ersoy University Burdur Turkey
| | - Şükrü Güngör
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine Burdur Mehmet Akif Ersoy University Burdur Turkey
| | - Fatih Avdatek
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine Afyon Kocatepe University Afyonkarahisar Turkey
| | - Deniz Yeni
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine Afyon Kocatepe University Afyonkarahisar Turkey
| | - Mehmet Fuat Gülhan
- Department of Medicinal Aromatic Plants, Technical Sciences Vocational School Aksaray University Aksaray Turkey
| | - Kemal Tuna Olğaç
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine Ankara University Ankara Turkey
| | - Barış Denk
- Department of Biochemistry, Faculty of Veterinary Medicine Afyon Kocatepe University Afyonkarahisar Turkey
| | - Umut Taşdemir
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine Aksaray University Aksaray Turkey
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Lénárt K, Bankó C, Ujlaki G, Póliska S, Kis G, Csősz É, Antal M, Bacso Z, Bai P, Fésüs L, Mádi A. Tissue Transglutaminase Knock-Out Preadipocytes and Beige Cells of Epididymal Fat Origin Possess Decreased Mitochondrial Functions Required for Thermogenesis. Int J Mol Sci 2022; 23:5175. [PMID: 35563567 PMCID: PMC9105016 DOI: 10.3390/ijms23095175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/29/2022] [Accepted: 04/29/2022] [Indexed: 11/24/2022] Open
Abstract
Beige adipocytes with thermogenic function are activated during cold exposure in white adipose tissue through the process of browning. These cells, similar to brown adipocytes, dissipate stored chemical energy in the form of heat with the help of uncoupling protein 1 (UCP1). Recently, we have shown that tissue transglutaminase (TG2) knock-out mice have decreased cold tolerance in parallel with lower utilization of their epididymal adipose tissue and reduced browning. To learn more about the thermogenic function of this fat depot, we isolated preadipocytes from the epididymal adipose tissue of wild-type and TG2 knock-out mice and differentiated them in the beige direction. Although differentiation of TG2 knock-out preadipocytes is phenotypically similar to the wild-type cells, the mitochondria of the knock-out beige cells have multiple impairments including an altered electron transport system generating lower electrochemical potential difference, reduced oxygen consumption, lower UCP1 protein content, and a higher portion of fragmented mitochondria. Most of these differences are present in preadipocytes as well, and the differentiation process cannot overcome the functional disadvantages completely. TG2 knock-out beige adipocytes produce more iodothyronine deiodinase 3 (DIO3) which may inactivate thyroid hormones required for the establishment of optimal mitochondrial function. The TG2 knock-out preadipocytes and beige cells are both hypometabolic as compared with the wild-type controls which may also be explained by the lower expression of solute carrier proteins SLC25A45, SLC25A47, and SLC25A42 which transport acylcarnitine, Co-A, and amino acids into the mitochondrial matrix. As a consequence, the mitochondria in TG2 knock-out beige adipocytes probably cannot reach the energy-producing threshold required for normal thermogenic functions, which may contribute to the decreased cold tolerance of TG2 knock-out mice.
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Affiliation(s)
- Kinga Lénárt
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary; (K.L.); (S.P.); (É.C.); (L.F.)
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary;
| | - Csaba Bankó
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary;
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary;
| | - Gyula Ujlaki
- NKFIH-DE Lendület Laboratory of Cellular Metabolism, Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary; (G.U.); (P.B.)
| | - Szilárd Póliska
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary; (K.L.); (S.P.); (É.C.); (L.F.)
| | - Gréta Kis
- Department of Anatomy, Histology Embryology, Faculty of Medicine, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary; (G.K.); (M.A.)
| | - Éva Csősz
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary; (K.L.); (S.P.); (É.C.); (L.F.)
| | - Miklós Antal
- Department of Anatomy, Histology Embryology, Faculty of Medicine, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary; (G.K.); (M.A.)
| | - Zsolt Bacso
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary;
| | - Péter Bai
- NKFIH-DE Lendület Laboratory of Cellular Metabolism, Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary; (G.U.); (P.B.)
- Research Center for Molecular Medicine, Faculty of Medicine, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary
| | - László Fésüs
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary; (K.L.); (S.P.); (É.C.); (L.F.)
| | - András Mádi
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Egyetem ter 1., H-4032 Debrecen, Hungary; (K.L.); (S.P.); (É.C.); (L.F.)
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9
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Llavanera M, Mislei B, Blanco-Prieto O, Baldassarro VA, Mateo-Otero Y, Spinaci M, Yeste M, Bucci D. Assessment of sperm mitochondrial activity by flow cytometry and fluorescent microscopy: a comparative study of mitochondrial fluorescent probes in bovine spermatozoa. Reprod Fertil Dev 2022; 34:679-688. [PMID: 35361313 DOI: 10.1071/rd21355] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 02/28/2022] [Indexed: 12/30/2022] Open
Abstract
CONTEXT While conventional semen analysis is a simple, time-saving, and economical means to evaluate sperm quality, it leaves biochemical and metabolic characteristics of spermatozoa aside. To address this issue, the use of fluorescent probes assessing functional sperm parameters, such as JC-1, DiOC6 (3) and MitoTracker, has increased over the last decades. Apparently contradictory observations have nevertheless fostered an ongoing debate on their sensitivity and ability to evaluate the mitochondrial membrane potential (MMP) of sperm cells, thus warranting a re-examination of these probes. AIMS The present study aims to elucidate the suitability and sensitivity of each probe to evaluate the MMP of bovine spermatozoa by flow cytometry. METHODS Cryopreserved spermatozoa from ten bulls were thawed, stained with JC-1/SYTOXRed, DiOC6 (3)/propidium iodide (PI) or MitoTracker Deep Red (MTDR)/PI, and evaluated with flow cytometry and fluorescence microscopy. KEY RESULTS DiOC6 (3), JC-1 and MTDR can be simultaneously co-stained with a viability marker. The results of the present study support the ability of DiOC6 (3)/PI and JC-1/SYTOXRed, but not that of MTDR/PI, to monitor the MMP of spermatozoa. CONCLUSIONS JC-1/SYTOXRed assessed by flow cytometry was found to be the most sensitive and robust fluorescent probe to assess MMP. Moreover, DiOC6 (3)/PI could be a suitable alternative when the flow cytometer is not equipped with a red laser and/or an adequate optical filter. IMPLICATIONS Both DiOC6 (3) and JC-1, but not MTDR, could be used as probes to assess the mitochondrial membrane potential of bovine spermatozoa.
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Affiliation(s)
- Marc Llavanera
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain; and Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain; and Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra, 50, Ozzano dell'Emilia, IT-40064 Bologna, Italy
| | - Beatrice Mislei
- National Institute of Artificial Insemination (AUB-INFA), University of Bologna, Via Gandolfi 16, Cadriano, IT-40057 Bologna, Italy
| | - Olga Blanco-Prieto
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra, 50, Ozzano dell'Emilia, IT-40064 Bologna, Italy
| | - Vito Antonio Baldassarro
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra, 50, Ozzano dell'Emilia, IT-40064 Bologna, Italy; and IRET Foundation, University of Bologna, Via Tolara di Sopra 41/E, Ozzano dell'Emilia, IT-40064 Bologna, Italy
| | - Yentel Mateo-Otero
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain; and Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain; and Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra, 50, Ozzano dell'Emilia, IT-40064 Bologna, Italy
| | - Marcella Spinaci
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra, 50, Ozzano dell'Emilia, IT-40064 Bologna, Italy
| | - Marc Yeste
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain; and Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain
| | - Diego Bucci
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra, 50, Ozzano dell'Emilia, IT-40064 Bologna, Italy
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10
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Jurado-Campos A, Soria-Meneses PJ, Sánchez-Rubio F, Niza E, Bravo I, Alonso-Moreno C, Arenas-Moreira M, García-Álvarez O, Soler AJ, Garde JJ, Fernández-Santos MDR. Vitamin E Delivery Systems Increase Resistance to Oxidative Stress in Red Deer Sperm Cells: Hydrogel and Nanoemulsion Carriers. Antioxidants (Basel) 2021; 10:1780. [PMID: 34829650 PMCID: PMC8615287 DOI: 10.3390/antiox10111780] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/25/2021] [Accepted: 11/03/2021] [Indexed: 11/24/2022] Open
Abstract
Oxidative stress has become a major concern in the field of spermatology, and one of the possible solutions to this acute problem would be the use of antioxidant protection; however, more studies are required in this field, as highly contradictory results regarding the addition of antioxidants have been obtained. Vitamin E is a powerful biological antioxidant, but its low stability and high hydrophobicity limit its application in spermatology, making the use of organic solvents necessary, which renders spermatozoa practically motionless. Keeping this in mind, we propose the use of hydrogels (HVEs) and nanoemulsions (NVEs), alone or in combination, as carriers for the controlled release of vitamin E, thus, improving its solubility and stability and preventing oxidative stress in sperm cells. Cryopreserved sperm from six stags was thawed and extended to 30 × 106 sperm/mL in Bovine Gamete Medium (BGM). Once aliquoted, the samples were incubated as follows: control, free vitamin E (1 mM), NVEs (9 mM), HVEs (1 mM), and the combination of HVEs and NVEs (H + N), with or without induced oxidative stress (100 µM Fe2+/ascorbate). The different treatments were analyzed after 0, 2, 5, and 24 h of incubation at 37 °C. Motility (CASA®), viability (YO-PRO-1/IP), mitochondrial membrane potential (Mitotracker Deep Red 633), lipid peroxidation (C11 BODIPY 581/591), intracellular reactive oxygen species production (CM-H2DCFDA), and DNA status (SCSA®) were assessed. Our results show that the deleterious effects of exogenous oxidative stress were prevented by the vitamin E-loaded carriers proposed, while the kinematic sperm parameters (p ˂ 0.05) and sperm viability were always preserved. Moreover, the vitamin E formulations maintained and preserved mitochondrial activity, prevented sperm lipid peroxidation, and decreased reactive oxygen species (ROS) production (p ˂ 0.05) under oxidative stress conditions. Vitamin E formulations were significantly different as regards the free vitamin E samples (p < 0.001), whose sperm kinematic parameters drastically decreased. This is the first time that vitamin E has been formulated as hydrogels. This new formulation could be highly relevant for sperm physiology preservation, signifying an excellent approach against sperm oxidative damage.
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Affiliation(s)
- Alejandro Jurado-Campos
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
| | - Pedro Javier Soria-Meneses
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
| | - Francisca Sánchez-Rubio
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
- Servicio de Farmacia Hospitalaria, Complejo Hospitalario Universitario de Albacete, GAI, 02071 Albacete, Spain
| | - Enrique Niza
- Centro Regional de Investigaciones Biomédicas, Unidad Nano-CRIB, 02071 Albacete, Spain; (E.N.); (I.B.); (C.A.-M.)
- Facultad de Farmacia, Universidad de Castilla la Mancha, 02071 Albacete, Spain
| | - Iván Bravo
- Centro Regional de Investigaciones Biomédicas, Unidad Nano-CRIB, 02071 Albacete, Spain; (E.N.); (I.B.); (C.A.-M.)
- Facultad de Farmacia, Universidad de Castilla la Mancha, 02071 Albacete, Spain
| | - Carlos Alonso-Moreno
- Centro Regional de Investigaciones Biomédicas, Unidad Nano-CRIB, 02071 Albacete, Spain; (E.N.); (I.B.); (C.A.-M.)
- Facultad de Farmacia, Universidad de Castilla la Mancha, 02071 Albacete, Spain
| | - María Arenas-Moreira
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
- Facultad de Farmacia, Universidad de Castilla la Mancha, 02071 Albacete, Spain
| | - Olga García-Álvarez
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
| | - Ana Josefa Soler
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
| | - José Julián Garde
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
| | - María del Rocío Fernández-Santos
- SaBio IREC (CSIC—UCLM—JCCM), Campus Universitario, s/n, 02071 Albacete, Spain; (A.J.-C.); (P.J.S.-M.); (F.S.-R.); (M.A.-M.); (O.G.-Á); (A.J.S.); (J.J.G.)
- Facultad de Farmacia, Universidad de Castilla la Mancha, 02071 Albacete, Spain
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11
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İnanç ME, Güngör Ş, Gül E, Uslu BA, Ata A. Gallic acid improves the viability and mitochondrial membrane potential of post-thawed goat buck semen. Acta Vet Hung 2021; 69:291-297. [PMID: 34570722 DOI: 10.1556/004.2021.00038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 09/05/2021] [Indexed: 12/15/2022]
Abstract
The aim of this study was to determine the effects of gallic acid (GA) on frozen-thawed goat spermatozoa. Four Honamli goat bucks were used at their breeding season, and ejaculates were collected by an electroejaculator. Mixed semen was divided into the following four groups: control (0 mM), low (L; 1 mM), medium (M; 2 mM), and high (H; 4 mM) concentration of GA. All the groups were frozen and thawed in a water bath for spermatological evaluation. The lowest motility was observed in the control group (47.60 ± 5.70%) (P < 0.05), while the highest viability (62.45 ± 1.68%), plasma membrane and acrosome integrity (44.81 ± 4.57%), and high mitochondrial membrane potential (35.96 ± 2.50%) were observed in the low GA group (P < 0.05). Also, the lowest hypo-osmotic swelling test (HOS +) value was found in the high GA group (47.60 ± 4.82%) (P < 0.05). In conclusion, supplementing a low concentration (1 mM) of GA to the Tris-based semen extender had a positive effect on spermatological parameters after freeze-thawing of Honamli goat semen. Further studies should be continued in other species with different doses and combinations using commercial and/or homemade semen extenders.
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Affiliation(s)
- Muhammed Enes İnanç
- 1 Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, Antalya Burdur Yolu, 15030 Yakaköy, Burdur, Turkey
| | - Şükrü Güngör
- 1 Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, Antalya Burdur Yolu, 15030 Yakaköy, Burdur, Turkey
| | - Emir Gül
- 2 Veterinarian in Gaziantep, Turkey
| | - Barış Atalay Uslu
- 1 Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, Antalya Burdur Yolu, 15030 Yakaköy, Burdur, Turkey
| | - Ayhan Ata
- 1 Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, Antalya Burdur Yolu, 15030 Yakaköy, Burdur, Turkey
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12
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Bayesian Analysis of the Effects of Olive Oil-Derived Antioxidants on Cryopreserved Buck Sperm Parameters. Animals (Basel) 2021; 11:ani11072032. [PMID: 34359159 PMCID: PMC8300210 DOI: 10.3390/ani11072032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/06/2021] [Accepted: 07/06/2021] [Indexed: 11/17/2022] Open
Abstract
The present study evaluates the effect of olive oil-derived antioxidants, hydroxytyrosol (HT) and 3,4-dihydroxyphenylglycol (DHPG), on cryopreserved caprine sperm using Bayesian inference of ANOVA. For this proposal, sperm was collected, pooled and diluted in freezing media supplemented with different concentrations of HT, DHPG and the mixture (MIX) of both antioxidants. Sperm motility, viability, acrosome integrity, mitochondrial status, and lipid peroxidation (LPO) were assessed in fresh and frozen-thawed sperm samples. The results provided evidence that HT at low concentrations improves sperm motility and viability, and reduces the LPO. Contrastingly, DHPG and MIX exert a positive effect by reducing LPO values as concentration increases. Additionally, mitochondrial potential was reduced when samples were supplemented with HT at low concentrations and mixture of both antioxidants. Conclusively, the addition of olive oil-derived antioxidants (HT at 10 µg/mL and DHPG at 30 µg/mL) implements a protective effect in cryopreserved buck sperm. Bayesian analysis alternatives offer new possibilities to determine the repercussion of antioxidants on sperm, both quantitatively and qualitatively.
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13
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Mendoza N, Casao A, Domingo J, Quintín F, Laviña A, Fantova E, Cebrián-Pérez JÁ, Muiño-Blanco T, Pérez-Pe R. Influence of Non-conventional Sperm Quality Parameters on Field Fertility in Ovine. Front Vet Sci 2021; 8:650572. [PMID: 34026889 PMCID: PMC8139619 DOI: 10.3389/fvets.2021.650572] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 04/06/2021] [Indexed: 12/04/2022] Open
Abstract
The prediction of the fertilizing ability of a seminal dose continues to be a primary aim in the field of artificial insemination (AI). To achieve this goal, in this study we have included the evaluation of some non-conventional sperm quality markers. A total of 3,906 ewes from 52 different farms were inseminated with 357 refrigerated seminal doses obtained from 45 mature Rasa Aragonesa rams. The same samples were used for sperm quality analysis including membrane integrity, capacitation status, oxygen consumption and apoptotic-like markers such as phosphatidylserine translocation (PS), plasmalemma disorganization/mitochondrial membrane potential, caspase activation and DNA damage. Seminal doses from the breeding (B) season presented higher percentages of intact membrane (IM), non permeant (NP) membrane with high mitochondrial membrane potential (ΔΨm) and IM without PS translocation spermatozoa than those from the non-breeding (NB) season. Therefore, we can conclude that there were less spermatozoa showing apoptotic-like features in the seminal doses from the B than the NB season, although these differences did not affect field fertility. Only the percentage of intact membrane, non-capacitated (IM-NC) spermatozoa showed a significant correlation with in vivo fertility (P = 0.005) and fecundity (P = 0.007) values obtained after cervical AI when all data were evaluated. When the data were sorted by season and distance to the farms where AI was performed, the correlation between the percentage of IM-NC spermatozoa and reproductive parameters increased in the NB season and progressively with remoteness from the farms. Some other sperm parameters, like NP with high ΔΨm, IM sperm without active caspases and DNA-intact spermatozoa, also showed significant correlations with the reproductive parameters in the sorted data. Moreover, the increment in both the percentage of IM-NC and DNA-intact spermatozoa would increase the probability of obtaining a fertility higher than the mean (>52%), as revealed by a multiple logistic regression analysis. In conclusion, we have identified two seminal markers—the percentage of intact membrane, non-capacitated spermatozoa, and DNA intact spermatozoa—which could be used as a test to discard males in AI programs, which is highly important from an economic point of view and can contribute to achieving satisfactory fertility rates.
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Affiliation(s)
- Noelia Mendoza
- Grupo BIOFITER-Departamento de Bioquímica y Biología Molecular y Celular-Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
| | - Adriana Casao
- Grupo BIOFITER-Departamento de Bioquímica y Biología Molecular y Celular-Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
| | - Juan Domingo
- Grupo BIOFITER-Departamento de Bioquímica y Biología Molecular y Celular-Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
| | - Francisco Quintín
- Centro de Transferencia Agroalimentaria (Gobierno de Aragón), Zaragoza, Spain
| | - Adolfo Laviña
- Asociación nacional de criadores de ganado ovino de la raza rasa aragonesa (ANGRA), Zaragoza, Spain
| | - Enrique Fantova
- Unión de Productores de Raza Rasa Aragonesa (UPRA)-Grupo Pastores, Zaragoza, Spain
| | - José Álvaro Cebrián-Pérez
- Grupo BIOFITER-Departamento de Bioquímica y Biología Molecular y Celular-Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
| | - Teresa Muiño-Blanco
- Grupo BIOFITER-Departamento de Bioquímica y Biología Molecular y Celular-Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
| | - Rosaura Pérez-Pe
- Grupo BIOFITER-Departamento de Bioquímica y Biología Molecular y Celular-Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
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14
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Khera N, Ghayor C, Lindholm AK, Pavlova E, Atanassova N, Weber FE. N, N-Dimethylacetamide, an FDA approved excipient, acts post-meiotically to impair spermatogenesis and cause infertility in rats. CHEMOSPHERE 2020; 256:127001. [PMID: 32447106 DOI: 10.1016/j.chemosphere.2020.127001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/05/2020] [Accepted: 05/05/2020] [Indexed: 06/11/2023]
Abstract
N, N-Dimethylacetamide is an FDA approved solvent widely used in pharmaceutical industry to facilitate the solubility of lipophilic, high molecular weight drugs with poor water solubility. However, the cytotoxic effects of DMA raises the concern about its use in clinical applications. In the present study, we address the effect of DMA on spermatogenesis. Male Sprague Dawley rats were injected intra-peritoneally for 8 weeks, once a week at a dose of 862 mg/kg. Analysis of reproductive parameters revealed that DMA treated animals exhibit spermatid formation defects within the testis describing the characteristics of oligozoospermia. A subsequent decrease in epididymal sperm concentration along with distortion of sperm morphology was observed. The mitochondrial and microtubule organization in the sperm is considerably modified by DMA. This disrupts the sperm kinetics thus decreasing the total and progressive sperm motility. Finally, DMA treatment resulted in loss of fertility. Our results indicate that exposure to DMA has a negative impact on spermatogenesis and leads to infertility in male rats by inhibiting the post meiotic stages of sperm development. Therefore, the use of DMA in humans must be closely monitored.
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Affiliation(s)
- Nupur Khera
- University of Zurich, Center of Dental Medicine, Oral Biotechnology & Bioengineering, Plattenstrasse11, 8032, Zürich, Switzerland; Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Switzerland
| | - Chafik Ghayor
- University of Zurich, Center of Dental Medicine, Oral Biotechnology & Bioengineering, Plattenstrasse11, 8032, Zürich, Switzerland
| | - Anna K Lindholm
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
| | - Ekaterina Pavlova
- Institute of Experimental Morphology, Pathology and Anthropology with Museum, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Nina Atanassova
- Institute of Experimental Morphology, Pathology and Anthropology with Museum, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Franz E Weber
- University of Zurich, Center of Dental Medicine, Oral Biotechnology & Bioengineering, Plattenstrasse11, 8032, Zürich, Switzerland; Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Switzerland; CABMM, Center for Applied Biotechnology and Molecular Medicine, University of Zurich, Zürich, Switzerland.
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15
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Gökerküçük EB, Tramier M, Bertolin G. Imaging Mitochondrial Functions: from Fluorescent Dyes to Genetically-Encoded Sensors. Genes (Basel) 2020; 11:E125. [PMID: 31979408 PMCID: PMC7073610 DOI: 10.3390/genes11020125] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 01/20/2020] [Accepted: 01/21/2020] [Indexed: 12/18/2022] Open
Abstract
Mitochondria are multifunctional organelles that are crucial to cell homeostasis. They constitute the major site of energy production for the cell, they are key players in signalling pathways using secondary messengers such as calcium, and they are involved in cell death and redox balance paradigms. Mitochondria quickly adapt their dynamics and biogenesis rates to meet the varying energy demands of the cells, both in normal and in pathological conditions. Therefore, understanding simultaneous changes in mitochondrial functions is crucial in developing mitochondria-based therapy options for complex pathological conditions such as cancer, neurological disorders, and metabolic syndromes. To this end, fluorescence microscopy coupled to live imaging represents a promising strategy to track these changes in real time. In this review, we will first describe the commonly available tools to follow three key mitochondrial functions using fluorescence microscopy: Calcium signalling, mitochondrial dynamics, and mitophagy. Then, we will focus on how the development of genetically-encoded fluorescent sensors became a milestone for the understanding of these mitochondrial functions. In particular, we will show how these tools allowed researchers to address several biochemical activities in living cells, and with high spatiotemporal resolution. With the ultimate goal of tracking multiple mitochondrial functions simultaneously, we will conclude by presenting future perspectives for the development of novel genetically-encoded fluorescent biosensors.
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Affiliation(s)
| | | | - Giulia Bertolin
- Univ Rennes, CNRS, IGDR [Institut de génétique et développement de Rennes] UMR 6290, F-35000 Rennes, France
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16
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Sola-Penna M, Paixão LP, Branco JR, Ochioni AC, Albanese JM, Mundim DM, Baptista-de-Souza D, Figueiredo CP, Coelho WS, Marcondes MC, Zancan P. Serotonin activates glycolysis and mitochondria biogenesis in human breast cancer cells through activation of the Jak1/STAT3/ERK1/2 and adenylate cyclase/PKA, respectively. Br J Cancer 2020; 122:194-208. [PMID: 31819176 PMCID: PMC7052254 DOI: 10.1038/s41416-019-0640-1] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 10/01/2019] [Accepted: 10/28/2019] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Although produced by several types of tumours, the role of serotonin on cancer biology is yet to be understood. METHODS The effects of serotonin (5-HT) on human breast cancer cells proliferation, signalling pathways and metabolic profile were evaluated by cytometry, western blotting, qPCR, enzymology and confocal microscopy. RESULTS Our results revealed that incubation of MCF-7 cells with 10 µM 5-HT increased cell growth rate by 28%, an effect that was prevented by the 5-HTR2A/C antagonist, ketanserin. Conversely, increasing concentrations of 5-HT promoted glucose consumption and lactate production by MCF-7 cells. We also showed that increased glucose metabolism is provoked by the upregulation of pyruvate kinase M2 (PKM2) isoform through 5-HTR2A/C-triggered activation of Jak1/STAT3 and ERK1/2 subcellular pathways. However, we noticed a decrease in the rate of produced lactate per consumed glucose as a function of the hormone concentration, suggesting a disruption of the Warburg effect. The latter effect is due to 5-HTR2A/C-dependent mitochondrial biogenesis and metabolism, which is triggered by adenylyl cyclase/PKA, enhancing the oxidation of lactate within these cells. CONCLUSIONS We showed that serotonin, through 5-HTR2A/C, interferes with breast cancer cells proliferation and metabolism by triggering two distinct signalling pathways: Jak1/STAT3 that boosts glycolysis through upregulation of PKM2, and adenylyl cyclase/PKA that enhances mitochondrial biogenesis.
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Affiliation(s)
- Mauro Sola-Penna
- Laboratório de Enzimologia e Controle do Metabolismo, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, 21941-902, Rio de Janeiro, RJ, Brazil
| | - Larissa P Paixão
- Laboratório de Oncobiologia Molecular, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, 21941-902, Rio de Janeiro, RJ, Brazil
| | - Jessica R Branco
- Laboratório de Oncobiologia Molecular, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, 21941-902, Rio de Janeiro, RJ, Brazil
| | - Alan C Ochioni
- Laboratório de Oncobiologia Molecular, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, 21941-902, Rio de Janeiro, RJ, Brazil
| | - Jamille M Albanese
- Laboratório de Oncobiologia Molecular, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, 21941-902, Rio de Janeiro, RJ, Brazil
| | - Davi M Mundim
- Laboratório de Oncobiologia Molecular, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, 21941-902, Rio de Janeiro, RJ, Brazil
| | | | - Claudia P Figueiredo
- Nucleo de Neurociências da Faculdade de Farmácia, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, 21941-902, Rio de Janeiro, RJ, Brazil
| | - Wagner S Coelho
- Laboratório de Enzimologia e Controle do Metabolismo, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, 21941-902, Rio de Janeiro, RJ, Brazil
- Universidade Estadual da Zona Oeste, 23070-200, Rio de Janeiro, RJ, Brazil
| | - Mariah C Marcondes
- Laboratório de Oncobiologia Molecular, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, 21941-902, Rio de Janeiro, RJ, Brazil
- Instituto Nacional de Câncer José Alencar Gomes da Silva, 20230-130, Rio de Janeiro, RJ, Brazil
| | - Patricia Zancan
- Laboratório de Oncobiologia Molecular, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, 21941-902, Rio de Janeiro, RJ, Brazil.
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17
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González A, Arando A, Acosta A, Alcalá CJ, Arrebola FA, Pérez-Marín CC. Frozen dog spermatozoa are negatively affected during storage at -80, -21 and -8 ºC. Anim Reprod Sci 2019; 210:106197. [PMID: 31635782 DOI: 10.1016/j.anireprosci.2019.106197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 09/19/2019] [Accepted: 09/27/2019] [Indexed: 11/19/2022]
Abstract
Cryopreservation in liquid nitrogen (LN2) allows for semen to be stored for long periods of time while there is sustaining of sperm viability. In this study, there was assessment of effects induced by different storage temperatures on cryopreserved dog spermatozoa. After cryopreservation at -196 °C, sperm samples were transferred to storage conditions of -80, 21 or -8 °C. Sperm motility, morphology, viability, acrosome integrity, mitochondrial membrane potential and DNA fragmentation were determined in samples stored at -196 °C (evaluation time =0 h), and then after 12 h and 1, 4, 7 and 15 d of storage at 80, -21 and -8 °C. In samples stored at -80 °C, sperm morphology, viability, acrosome integrity, mitochondrial membrane potential and DNA fragmentation did not differ at successive evaluation times. Progressive motility was less (P < 0.05) after 12 h and total motility after 4 d of storage at -80 ºC as compared with that of the 0 h sample. With storage at the other temperatures (-21 and -8 ºC), there was a reduction of mean values for sperm total and progressive motility, viability and mitochondrial membrane potential after 12 h of storage at these temperatures. Results, therefore, indicate the use of ultra-freezers at -80 ºC to store frozen dog semen allows for maintenance of sperm characteristics for at least 15 d but motility is sustained for only 1 d. Neither of the -21 or -8 ºC storage temperatures were effective for storing of frozen dog sperm and retaining viability.
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Affiliation(s)
- Antonio González
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Cordoba, Cordoba, Spain
| | - Ander Arando
- Department of Genetics, Faculty of Veterinary Medicine, University of Cordoba, Cordoba, Spain
| | - Alberto Acosta
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Cordoba, Cordoba, Spain
| | - Carlos J Alcalá
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Cordoba, Cordoba, Spain
| | - Francisco A Arrebola
- Instituto de Investigación y Formación Agraria y Pesquera (IFAPA) Hinojosa del Duque, Cordoba, Spain
| | - Carlos C Pérez-Marín
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Cordoba, Cordoba, Spain.
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18
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Ugur MR, Saber Abdelrahman A, Evans HC, Gilmore AA, Hitit M, Arifiantini RI, Purwantara B, Kaya A, Memili E. Advances in Cryopreservation of Bull Sperm. Front Vet Sci 2019; 6:268. [PMID: 31552277 PMCID: PMC6736622 DOI: 10.3389/fvets.2019.00268] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 08/02/2019] [Indexed: 12/13/2022] Open
Abstract
Cryopreservation of semen and artificial insemination have an important, positive impact on cattle production, and product quality. Through the use of cryopreserved semen and artificial insemination, sperm from the best breeding bulls can be used to inseminate thousands of cows around the world. Although cryopreservation of bull sperm has advanced beyond that of other species, there are still major gaps in the knowledge and technology bases. Post-thaw viability of sperm is still low and differs significantly among the breeding bulls. These weaknesses are important because they are preventing advances both in fundamental science of mammalian gametes and reproductive biotechnology. Various extenders have been developed and supplemented with chemicals to reduce cryodamage or oxidative stress with varying levels of success. More detailed insights on sperm morphology and function have been uncovered through application of advanced tools in modern molecular and cell biology. This article provides a concise review of progress in the cryopreservation of bull sperm, advances in extender development, and frontiers using diverse techniques of the study of sperm viability. This scientific resource is important in animal biotechnology because with the advances in discovery of sperm fertility markers, there is an urgent need to improve post-thaw viability and fertility of sperm through enhanced cryopreservation for precision agriculture to produce food animals to ensure food security on the global scale.
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Affiliation(s)
- Muhammet Rasit Ugur
- Department of Animal and Dairy Sciences, Mississippi State University, Starkville, MS, United States
| | - Amal Saber Abdelrahman
- Department of Clinic, Reproduction and Pathology, Faculty of Veterinary Medicine, Bogor Agricultural University, Bogor, Indonesia
| | - Holly C. Evans
- Department of Animal and Dairy Sciences, Mississippi State University, Starkville, MS, United States
| | - Alicia A. Gilmore
- Department of Animal and Dairy Sciences, Mississippi State University, Starkville, MS, United States
| | - Mustafa Hitit
- Department of Animal and Dairy Sciences, Mississippi State University, Starkville, MS, United States
- Department of Genetics, Faculty of Veterinary Medicine, Kastamonu University, Kastamonu, Turkey
| | - Raden Iis Arifiantini
- Department of Clinic, Reproduction and Pathology, Faculty of Veterinary Medicine, Bogor Agricultural University, Bogor, Indonesia
| | - Bambang Purwantara
- Department of Clinic, Reproduction and Pathology, Faculty of Veterinary Medicine, Bogor Agricultural University, Bogor, Indonesia
| | - Abdullah Kaya
- Department of Reproduction and Artificial Insemination, Selcuk University, Konya, Turkey
| | - Erdogan Memili
- Department of Animal and Dairy Sciences, Mississippi State University, Starkville, MS, United States
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Pioglitazone, a PPARγ agonist, reduces cisplatin-evoked neuropathic pain by protecting against oxidative stress. Pain 2019; 160:688-701. [PMID: 30507781 DOI: 10.1097/j.pain.0000000000001448] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Painful peripheral neuropathy is a dose-limiting side effect of cisplatin treatment. Using a murine model of cisplatin-induced hyperalgesia, we determined whether a PPARγ synthetic agonist, pioglitazone, attenuated the development of neuropathic pain and identified underlying mechanisms. Cisplatin produced mechanical and cold hyperalgesia and decreased electrical thresholds of Aδ and C fibers, which were attenuated by coadministration of pioglitazone (10 mg/kg, intraperitoneally [i.p.]) with cisplatin. Antihyperalgesic effects of pioglitazone were blocked by the PPARγ antagonist T0070907 (10 mg/kg, i.p.). We hypothesized that the ability of pioglitazone to reduce the accumulation of reactive oxygen species (ROS) in dorsal root ganglion (DRG) neurons contributed to its antihyperalgesic activity. Effects of cisplatin and pioglitazone on somatosensory neurons were studied on dissociated mouse DRG neurons after 24 hours in vitro. Incubation of DRG neurons with cisplatin (13 µM) for 24 hours increased the occurrence of depolarization-evoked calcium transients, and these were normalized by coincubation with pioglitazone (10 µM). Oxidative stress in DRG neurons was considered a significant contributor to cisplatin-evoked hyperalgesia because a ROS scavenger attenuated hyperalgesia and normalized the evoked calcium responses when cotreated with cisplatin. Pioglitazone increased the expression and activity of ROS-reducing enzymes in DRG and normalized cisplatin-evoked changes in oxidative stress and labeling of mitochondria with the dye MitoTracker Deep Red, indicating that the antihyperalgesic effects of pioglitazone were attributed to its antioxidant properties in DRG neurons. These data demonstrate clear benefits of broadening the use of the antidiabetic drug pioglitazone, or other PPARγ agonists, to minimize the development of cisplatin-induced painful neuropathy.
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Victor A, Griffin D, K Gardner D, Brake A, Zouves C, Barnes F, Viotti M. Births from embryos with highly elevated levels of mitochondrial DNA. Reprod Biomed Online 2019; 39:403-412. [PMID: 31420253 DOI: 10.1016/j.rbmo.2019.03.214] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 03/19/2019] [Accepted: 03/21/2019] [Indexed: 11/28/2022]
Abstract
RESEARCH QUESTION Conflicting data exist on the utility of quantification of mitochondrial DNA (mtDNA) levels as a predictor of blastocyst implantation in the IVF clinic. The current study determined whether blastocysts with highly elevated mtDNA levels could result in healthy pregnancies and births, and whether mitochondrial functional output might be a readout of cell stress in the embryo. DESIGN mtDNA levels were determined in 109 blastocysts used in clinical transfers into 100 women, noting their clinical outcomes. In a separate set of embryos, mitochondrial function was quantified in a model of embryo stress, aneuploidy. Measurement of mtDNA levels made use of surplus material from the process of preimplantation genetic testing for aneuploidies, and followed recently proposed unifying guidelines for mtDNA quantification. RESULTS Unusually high mtDNA levels did not preclude blastocyst implantation and healthy births. An analysis of 109 blastocysts showed no significant difference between mtDNA levels in implanted (n = 55) versus non-implanted (n = 54) blastocysts. No obvious differences in the degree of mitochondrial functional output were detected in a model of embryo stress. CONCLUSIONS Measurement of mtDNA copy number might not provide any advantage in embryo prioritization and could lead to a deselection of blastocysts that would result in healthy pregnancies and births. Furthermore, the quantification of mitochondrial functional output in a model of cellular stress might suggest that mitochondria are not clear targets for biomarker identification as it relates to blastocyst viability. Any suggested link between mtDNA levels, mitochondria or their output with blastocyst transfer outcome requires further validation.
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Affiliation(s)
- Andrea Victor
- Zouves Fertility Center, Foster City California, USA; School of Biosciences, University of Kent, Canterbury, UK
| | - Darren Griffin
- School of Biosciences, University of Kent, Canterbury, UK
| | - David K Gardner
- School of BioSciences, University of Melbourne, Parkville, Australia
| | - Alan Brake
- Zouves Fertility Center, Foster City California, USA
| | - Christo Zouves
- Zouves Fertility Center, Foster City California, USA; Zouves Foundation for Reproductive Medicine, Foster City California, USA
| | - Frank Barnes
- Zouves Fertility Center, Foster City California, USA; Zouves Foundation for Reproductive Medicine, Foster City California, USA
| | - Manuel Viotti
- Zouves Fertility Center, Foster City California, USA; Zouves Foundation for Reproductive Medicine, Foster City California, USA.
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Díaz-Miranda EA, Maitan PP, Machado TP, Camilo BS, Lima DA, Okano DS, Penitente-Filho JM, Machado-Neves M, de Oliveira LL, Guimarães SEF, da Costa EP, Guimarães JD. Disruption of bovine sperm functions in the presence of aplastic midpiece defect. Andrology 2019; 8:201-210. [PMID: 30908900 DOI: 10.1111/andr.12618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 02/14/2019] [Accepted: 03/04/2019] [Indexed: 11/26/2022]
Abstract
BACKGROUND Bulls are of great importance in the productive chain and for this reason they should have a good semen quality. There is no doubt that sperm morphology is very important to bull fertility, although little is known about how exactly the abnormal morphologies may affect sperm functions. OBJECTIVES To detail the morphological description of the aplastic midpiece defect (AMD), as well as to understand its consequences for male fertility based on membrane and acrosome status, mitochondrial membrane potential and DNA integrity parameters. MATERIALS AND METHODS The bulls were divided into two groups: control, consisting of satisfactory potential breeders (n = 3); and AMD, consisting of unsatisfactory potential breeders with a high percentage of AMD (n = 3). Bulls were evaluated by the breeding soundness evaluation; five ejaculates were collected from each animal and analyzed by flow cytometry. RESULTS Spermatozoa from AMD group exhibited lower sperm motility and vigor (p < 0.05). In addition, it also exhibited lower mitochondrial membrane potential (p < 0.05), a higher percentage of spermatozoa with DNA fragmentation (p < 0.05), lower acrosome and plasma membrane integrity (p < 0.05), and higher lipid bilayer sperm membrane disorganization (p < 0.05) in comparison with control bulls. DISCUSSION These findings may be due to oxidative stress and a reduction of the energy production capacity in addition to an alteration in the structural composition of the sperm cell. Moreover, semen with a high percentage of AMD may also be undergoing apoptosis. CONCLUSION Bulls with a high percentage of AMD in their semen are not suitable for reproduction. Furthermore, it suggests there is a putative genetic basis for this sperm defect.
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Affiliation(s)
- E A Díaz-Miranda
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - P P Maitan
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - T P Machado
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - B S Camilo
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - D A Lima
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - D S Okano
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - J M Penitente-Filho
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - M Machado-Neves
- Department of General Biology, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - L L de Oliveira
- Department of General Biology, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - S E F Guimarães
- Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - E P da Costa
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - J D Guimarães
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG, Brazil
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Arando A, Delgado JV, Fernández-Prior A, León JM, Bermúdez-Oria A, Nogales S, Pérez-Marín CC. Effect of different olive oil-derived antioxidants (hydroxytyrosol and 3,4-dihydroxyphenylglycol) on the quality of frozen-thawed ram sperm. Cryobiology 2019; 86:33-39. [PMID: 30611732 DOI: 10.1016/j.cryobiol.2019.01.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 11/29/2018] [Accepted: 01/02/2019] [Indexed: 12/31/2022]
Abstract
The aim of the present study was to evaluate the effect of the addition of different concentrations of two olive oil-derived antioxidants, hydroxytyrosol (3,4-dihydroxyphenylethanol, HT) and 3,4-dihydroxyphenylglycol (DHPG), on ovine semen during the freezing-thawing process. Sperm was collected, pooled and diluted with commercial extenders and then divided into aliquots supplemented with different concentrations (10 μg/ml, 30 μg/ml, 50 μg/ml and 70 μg/ml) of HT, DHPG and a mixture (MIX) of both antioxidants. A control group, without antioxidant, was also prepared. Sperm motility, viability, acrosome integrity, mitochondrial membrane potential and lipid peroxidation (LPO) were assessed. The results showed that frozen-thawed ram spermatozoa exhibited lower values for motility, membrane integrity, acrosome and mitochondrial membrane potential than fresh samples (P ≤ 0.01). However, when antioxidants were added, thawed spermatozoa exhibited relatively low LPO, recording values similar to fresh spermatozoa; by contrast, the control group of frozen-thawed spermatozoa without antioxidants exhibited significantly higher LPO (P ≤ 0.01). The addition of a HT+DHPG mixture (MIX) had a negative impact on sperm membrane and acrosome integrity, suggesting that a pure antioxidant supplementation has the potential to offer superior results. In conclusion, HT and DHPG exhibited a positive effect on the frozen-thawed spermatozoa inasmuch as they reduced the LPO. These olive oil-derived antioxidants have the potential to improve frozen-thawed sperm quality, although further studies should be carried out to analyse the antioxidant effect at different times after thawing.
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Affiliation(s)
- A Arando
- Department of Genetics, Faculty of Veterinary Medicine, University of Cordoba, Cordoba, 14014, Spain
| | - J V Delgado
- Department of Genetics, Faculty of Veterinary Medicine, University of Cordoba, Cordoba, 14014, Spain
| | - A Fernández-Prior
- Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC), Sevilla, 41013, Spain
| | - J M León
- Centro Agropecuario Provincial de la Diputación de Cordoba, Cordoba, 14014, Spain
| | - A Bermúdez-Oria
- Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC), Sevilla, 41013, Spain
| | - S Nogales
- Department of Genetics, Faculty of Veterinary Medicine, University of Cordoba, Cordoba, 14014, Spain
| | - C C Pérez-Marín
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Cordoba, Cordoba, 14014, Spain.
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23
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Spermatic mitochondria: role in oxidative homeostasis, sperm function and possible tools for their assessment. ZYGOTE 2018; 26:251-260. [PMID: 30223916 DOI: 10.1017/s0967199418000242] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
SummaryDespite sperm mitochondrial relevance to the fertilization capacity, the processes involved in the production of ATP and functional dynamics of sperm mitochondria are not fully understood. One of these processes is the paradox involved between function and formation of reactive oxygen species performed by the organelle. Therefore, this review aimed to provide data on the role of sperm mitochondria in oxidative homeostasis and functionality as well the tools to assess sperm mitochondrial function.
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Kumaresan A, Johannisson A, Bergqvist AS. Sperm function during incubation with oestrus oviductal fluid differs in bulls with different fertility. Reprod Fertil Dev 2018; 29:1096-1106. [PMID: 27112984 DOI: 10.1071/rd15474] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Accepted: 03/01/2016] [Indexed: 12/11/2022] Open
Abstract
Spermatozoa undergo several modifications in the oviduct before acquiring fertilising capacity. Although spermatozoa are exposed to similar conditions in the oviduct, the speed of the response varies with the male and the state of the spermatozoa. We hypothesised that spermatozoa from bulls with different fertility may differ in their ability to respond to oviductal fluid (ODF). Frozen-thawed spermatozoa from four bulls were incubated with oestrus oviductal fluid (OODF) for 6h. Sperm kinematics, tyrosine phosphorylation, phosphorylation patterns, capacitation and acrosome reaction were analysed at hourly intervals. The amplitude of lateral head displacement (ALH) and straightness coefficient (STR) were higher (P<0.05) in bulls with higher fertility compared with those with lower fertility, at 1-4h of incubation. At 4h of incubation and onwards, spermatozoa from bulls with higher fertility showed a lower degree (P<0.05) of tyrosine phosphorylation and higher degree of capacitation and acrosome reaction. At least five tyrosine-phosphorylated sperm proteins were detected in all bulls. However, the expression of two phosphorylated sperm proteins (183 and 109 kDa) was upregulated in bulls with lower fertility. It may be concluded that cryopreserved spermatozoa from high- and low- fertile bulls differ in their ability to respond to OODF. This may help in developing tools for assessing fertility of bulls, once validated in more animals.
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Affiliation(s)
- A Kumaresan
- Division of Reproduction, Department of Clinical Sciences, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, PO Box 7054, SE-750 07 Uppsala, Sweden
| | - A Johannisson
- Division of Reproduction, Department of Clinical Sciences, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, PO Box 7054, SE-750 07 Uppsala, Sweden
| | - A-S Bergqvist
- Division of Reproduction, Department of Clinical Sciences, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, PO Box 7054, SE-750 07 Uppsala, Sweden
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25
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Angrimani DSR, Nagai KK, Rui BR, Bicudo LC, Losano JDA, Brito MM, Francischini MCP, Nichi M. Spermatic and oxidative profile of domestic cat (Felis catus
) epididymal sperm subjected to different cooling times (24, 48 and 72 hours). Reprod Domest Anim 2017; 53:163-170. [DOI: 10.1111/rda.13086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 08/20/2017] [Indexed: 01/24/2023]
Affiliation(s)
- DSR Angrimani
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - KK Nagai
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - BR Rui
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - LC Bicudo
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - JDA Losano
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - MM Brito
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - MCP Francischini
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - M Nichi
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
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26
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Sánchez-Calabuig MJ, Maillo V, Beltrán-Breña P, de la Fuente Martínez J, Galera-Carrillo S, Pérez-Gutiérrez JF, Pérez-Cerezales S. Cryopreservation of canine sperm using egg yolk and soy bean based extenders. Reprod Biol 2017; 17:233-238. [PMID: 28579337 DOI: 10.1016/j.repbio.2017.05.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 02/27/2017] [Accepted: 05/13/2017] [Indexed: 11/28/2022]
Abstract
Animal protein-based extenders are widely used despite being a potential source of bacterial or mycoplasma contamination. Its replacement with vegetal protein-based extenders could represent an interesting alternative for dog sperm cryopreservation. This technique could be further improved by the addition of Tris-Glucose-Citric acid (TGC) that could physically protect the spermatozoa and improve its homeostasis. The aim of this study was to evaluate a cryopreservation protocol for dog spermatozoa using a soybean-based extender (LP1℗) as well as the effects of the addition of (TGC) immediately after the semen collection. Eleven ejaculates from purebred adult dogs were collected, centrifuged in the absence or presence of TGC and processed as fresh or cryopreserved spermatozoa with: egg yolk-based extender (CaniPRO) or LP1℗. Freezing the spermatozoa in LP1℗ reduced the amplitude of the lateral head displacement, the percentage of spermatozoa that showed the intact acrosome and the mitochondrial function (P<0.05). These samples also showed a trend towards increased percentage of apoptotic spermatozoa (P<0.05). The addition of TGC before centrifugation did not improve the seminal parameters and adversely affected motility (P<0.05) in the spermatozoa cryopreserved in CaniPRO. However, TGC did not affect motility and increased (P<0.05) the percentage of intact acrosomes in the spermatozoa cryopreserved in LP1℗, reaching similar values than those cryopreserved in CaniPRO. In conclusion, LP1® plus TGC provide the same level of protection to dog spermatozoa cryopreservation than the egg yolk based extender CaniPRO when comparing standard post-thaw sperm quality parameters.
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Affiliation(s)
- María Jesús Sánchez-Calabuig
- Department of Animal Reproduction, SGIT-INIA, Avda. Puerta de Hierro km 5.9, 28040 Madrid, Spain; Department of Animal Medicine and Surgery, School of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain
| | - Verónica Maillo
- Department of Animal Reproduction, SGIT-INIA, Avda. Puerta de Hierro km 5.9, 28040 Madrid, Spain
| | - Paula Beltrán-Breña
- Department of Animal Reproduction, SGIT-INIA, Avda. Puerta de Hierro km 5.9, 28040 Madrid, Spain
| | | | | | - José Félix Pérez-Gutiérrez
- Department of Animal Medicine and Surgery, School of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain.
| | - Serafín Pérez-Cerezales
- Department of Animal Reproduction, SGIT-INIA, Avda. Puerta de Hierro km 5.9, 28040 Madrid, Spain
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27
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Yan W, Kanno C, Oshima E, Kuzuma Y, Kim SW, Bai H, Takahashi M, Yanagawa Y, Nagano M, Wakamatsu JI, Kawahara M. Enhancement of sperm motility and viability by turmeric by-product dietary supplementation in roosters. Anim Reprod Sci 2017; 185:195-204. [PMID: 28869111 DOI: 10.1016/j.anireprosci.2017.08.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 07/30/2017] [Accepted: 08/23/2017] [Indexed: 12/21/2022]
Abstract
Improving sperm motility and viability are major goals to improve efficiency in the poultry industry. In this study, the effects of supplemental dietary turmeric by-product (TBP) from commercial turmeric production on sperm motility, viability, and antioxidative status were examined in domestic fowl. Mature Rhode Island Red roosters were divided into two groups - controls (groupC) without TBP administration and test subjects (groupT) fed a basal diet supplemented with 0.8g of TBP/day in a temperature-controlled rearing facility (Experiment 1) and 1.6g/day under heat stress (Experiment 2) for 4 weeks. In Experiment 1, TBP dietary supplementation increased the sperm motility variables straight-line velocity, curvilinear velocity, and linearity based on a computer-assisted semen analysis, 2 weeks following TBP supplementation. In Experiment 2, using flow cytometry, sperm viability at 3 and 4 weeks following TBP supplementation was greater in Group T than C, and this increase was consistent with a reduction in reactive oxygen species (ROS) production at 2 and 4 weeks. The results of both experiments clearly demonstrate that dietary supplementation with TBP enhanced sperm motility in the controlled-temperature conditions as well as sperm viability, and reduced ROS generation when heat stress prevailed. Considering its potential application in a range of environments, TBP may serve as an economical and potent antioxidant to improve rooster fertility.
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Affiliation(s)
- Wenjing Yan
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Chihiro Kanno
- Laboratory of Theriogenology, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Eiki Oshima
- Field Science Center for Northern Biosphere, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Yukiko Kuzuma
- Field Science Center for Northern Biosphere, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Sung Woo Kim
- National Institute of Animal Science, Animal Genetic Resources Research Center, Namwon, 55717, South Korea
| | - Hanako Bai
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Masashi Takahashi
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Yojiro Yanagawa
- Laboratory of Theriogenology, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Masashi Nagano
- Laboratory of Theriogenology, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Jun-Ichi Wakamatsu
- Laboratory of Applied Food Science, Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Manabu Kawahara
- Laboratory of Animal Genetics and Reproduction, Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, Japan.
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Chandra AK, Chakraborty A. Influence of iodine in excess on seminiferous tubular structure and epididymal sperm character in male rats. ENVIRONMENTAL TOXICOLOGY 2017; 32:1823-1835. [PMID: 28205391 DOI: 10.1002/tox.22405] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 01/16/2017] [Accepted: 01/25/2017] [Indexed: 06/06/2023]
Abstract
Excess iodine induced public health problems are now emerging in many iodine sufficient regions for indiscriminate intake of iodine through various iodized products. It has been reported that excess iodine can disrupt overall male reproductive physiology by generating oxidative stress in the testis. However, information on the possible effect of iodine in excess on spermatozoa found less. In the present investigation flow cytometric techniques and scanning electron microscopy (SEM) have been used to study the spermatozoal functional as well as structural status under the influence of excess iodine; generation of ROS in the spermatozoa as evident by DCFDA, altered acrosomal integrity as observed by fluorescence lectin staining method and depolarized mitochondrial membrane potential (ΔΨm ) noticed by JC-1 staining. Ultrastructure of seminiferous tubule after excess iodine exposure indicated severe deterioration of seminiferous tubular surface architecture. Significant increase in spermatozoal DNA fragmentation and apoptotic sperms were found by acridine orange and Annexin V, respectively, however the plasma membrane integrity/viability was decreased as evident by propidium iodide staining in various incremental doses and durations under iodine excess. The study reveals that excess iodine could cause apoptosis of spermatozoal cells by inducing ROS that ultimately affects male fertility potential.
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Affiliation(s)
- Amar K Chandra
- Endocrinology and Reproductive Physiology Laboratory, Department of Physiology, University College of Science and Technology, University of Calcutta, 92, Acharya Prafulla Chandra Road, Kolkata, West Bengal, 700 009, India
| | - Arijit Chakraborty
- Endocrinology and Reproductive Physiology Laboratory, Department of Physiology, University College of Science and Technology, University of Calcutta, 92, Acharya Prafulla Chandra Road, Kolkata, West Bengal, 700 009, India
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Srivastava N, Pande M. Mitochondrion: Features, functions and comparative analysis of specific probes in detecting sperm cell damages. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2016. [DOI: 10.1016/j.apjr.2016.10.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Circumventing the Crabtree Effect: A method to induce lactate consumption and increase oxidative phosphorylation in cell culture. Int J Biochem Cell Biol 2016; 79:128-138. [PMID: 27590850 DOI: 10.1016/j.biocel.2016.08.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 08/15/2016] [Accepted: 08/29/2016] [Indexed: 12/17/2022]
Abstract
Most cells grown in glucose-containing medium generate almost all their ATP via glycolysis despite abundant oxygen supply and functional mitochondria, a phenomenon known as the Crabtree effect. By contrast, most cells within the body rely on mitochondrial oxidative phosphorylation (OXPHOS) to generate the bulk of their energy supply. Thus, when utilising the accessibility of cell culture to elucidate fundamental elements of mitochondria in health and disease, it is advantageous to adopt culture conditions under which the cells have greater reliance upon OXPHOS for the supply of their energy needs. Substituting galactose for glucose in the culture medium can provide these conditions, but additional benefit can be gained from alternate in vitro models. Herein we describe culture conditions in which complete autonomous depletion of medium glucose induces a lactate-consuming phase marked by increased MitoTracker Deep Red staining intensity, increased expression of Kreb's cycle proteins, increased expression of electron transport chain subunits, and increased sensitivity to the OXPHOS inhibitor rotenone. We propose these culture conditions represent an alternate accessible model for the in vitro study of cellular processes and diseases involving the mitochondrion without limitations incurred via the Crabtree effect.
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Santiani A, Ugarelli A, Evangelista-Vargas S. Characterization of functional variables in epididymal alpaca (Vicugna pacos) sperm using imaging flow cytometry. Anim Reprod Sci 2016; 173:49-55. [PMID: 27577979 DOI: 10.1016/j.anireprosci.2016.08.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 08/21/2016] [Accepted: 08/25/2016] [Indexed: 10/21/2022]
Abstract
Epididymal alpaca sperm represent an alternative model for the study of alpaca semen. The objective of this study was to characterize the normal values of some functional variables in epididymal alpaca sperm using imaging flow cytometry. Alpaca testicles (n=150) were processed and sperm were recovered from the cauda epididymides. Only 76 samples with acceptable motility and sperm count were considered for assessment by imaging flow cytometry. Acrosome integrity and integrity/viability were assessed by FITC-PSA/PI and FITC-PNA/PI. Mitochondrial membrane potential (MMP) was assessed by MitoTracker CMXRos and MitoTracker Deep Red FM. Lipid peroxidation was evaluated using BODIPY 581/591 C11. Results show that the mean values for acrosome-intact sperm were 95.03±6.39% and 93.34±7.96%, using FITC-PSA and FITC-PNA, respectively. The mean values for acrosome-intact viable sperm were 60.58±12.12% with FITC-PSA/PI and 58.81±12.94% with FITC-PNA/PI. Greater MMP was detected in 65.03±15.92% and 59.52±19.19%, using MitoTracker CMXRos and MitoTracker Deep Red FM, respectively. Lipid peroxidation was 0.84±0.95%. Evaluation of acrosome-intact and acrosome-intact viable sperm with FITC-PSA/PI compared with. FITC-PNA/PI or MMP with MitoTracker CMXRos compared with MitoTracker Deep Red FM were correlated (P<0.05). The MMP using MitoTracker CMXRos was the only variable correlated (P<0.05) with sperm motility (r=0.3979). This report provides a basis for future research related to alpaca semen using the epididymal sperm model.
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Affiliation(s)
- Alexei Santiani
- Laboratory of Animal Reproduction, Faculty of Veterinary Medicine, Universidad Nacional Mayor de San Marcos (UNMSM), 2800 Circunvalación Av., Lima 41, Peru; Laboratory of Reproductive and Cellular Biotechnologies, Faculty of Veterinary and Biological Sciences, Universidad Científica del Sur (UCSUR), Panamericana Sur Km. 19, Lima 42, Peru.
| | - Alejandra Ugarelli
- Laboratory of Reproductive and Cellular Biotechnologies, Faculty of Veterinary and Biological Sciences, Universidad Científica del Sur (UCSUR), Panamericana Sur Km. 19, Lima 42, Peru
| | - Shirley Evangelista-Vargas
- Laboratory of Reproductive and Cellular Biotechnologies, Faculty of Veterinary and Biological Sciences, Universidad Científica del Sur (UCSUR), Panamericana Sur Km. 19, Lima 42, Peru
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PEKER AKALIN P, BAŞPINAR N, ÇOYAN K, BUCAK MN, GÜNGÖR Ş, ÖZTÜRK C. Effects of ultrasonication on damaged spermatozoa and mitochondrial activity rate. TURKISH JOURNAL OF VETERINARY & ANIMAL SCIENCES 2016. [DOI: 10.3906/vet-1507-18] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Characteristics of frozen epididymal spermatozoa from stallions that died 12 to 36 hours after colic surgery. Theriogenology 2016; 85:345-50. [DOI: 10.1016/j.theriogenology.2015.09.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 09/03/2015] [Accepted: 09/03/2015] [Indexed: 11/21/2022]
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Simultaneous evaluation of plasma membrane integrity, acrosomal integrity, and mitochondrial membrane potential in bovine spermatozoa by flow cytometry. ZYGOTE 2015; 24:529-36. [DOI: 10.1017/s0967199415000490] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
SummaryThe present study aimed to develop an objective evaluation procedure to estimate the plasma membrane integrity, acrosomal integrity, and mitochondrial membrane potential of bull spermatozoa simultaneously by flow cytometry. Firstly, we used frozen–thawed semen mixed with 0, 25, 50, 75 or 100% dead spermatozoa. Semen was stained using three staining solutions: SYBR-14, propidium iodide (PI), and phycoerythrin-conjugated peanut agglutinin (PE–PNA), for the evaluation of plasma membrane integrity and acrosomal integrity. Then, characteristics evaluated by flow cytometry and by fluorescence microscopy were compared. Characteristics of spermatozoa (viability and acrosomal integrity) evaluated by flow cytometry and by fluorescence microscopy were found to be similar. Secondly, we attempted to evaluate the plasma membrane integrity, acrosomal integrity, and also mitochondrial membrane potential of spermatozoa by flow cytometry using conventional staining with three dyes (SYBR-14, PI, and PE–PNA) combined with MitoTracker Deep Red (MTDR) staining (quadruple staining). The spermatozoon characteristics evaluated by flow cytometry using quadruple staining were then compared with those of staining using SYBR-14, PI, and PE–PNA and staining using SYBR-14 and MTDR. There were no significant differences in all characteristics (viability, acrosomal integrity, and mitochondrial membrane potential) evaluated by quadruple staining and the other procedures. In conclusion, quadruple staining using SYBR-14, PI, PE–PNA, and MTDR for flow cytometry can be used to evaluate the plasma membrane integrity, acrosomal integrity, and mitochondrial membrane potential of bovine spermatozoa simultaneously.
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Holt WV, Del Valle I, Fazeli A. Heat shock protein A8 stabilizes the bull sperm plasma membrane during cryopreservation: Effects of breed, protein concentration, and mode of use. Theriogenology 2015; 84:693-701. [PMID: 26047707 DOI: 10.1016/j.theriogenology.2015.05.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Revised: 05/03/2015] [Accepted: 05/03/2015] [Indexed: 12/13/2022]
Abstract
Heat shock protein A8 (HSPA8) is a highly conserved member of the Hsp70 family, which is expressed in oviductal cells, translocated into oviductal fluid, and becomes attached to the sperm surface during sperm transport. Previous research has shown that HSPA8 supports mammalian sperm viability during in vitro incubation at both 5 °C and body temperature. The present series of experiments was designed to explore the possibility that bovine recombinant HSPA8 might therefore protect bull spermatozoa during cryopreservation through its beneficial effects on the sperm plasma membrane. Soy-based cryopreservation media were used in these experiments. The effects of HSPA8 addition before freezing were examined at concentrations ranging from 0.2 to 6.4 μg/mL, whereas the effects of postthaw HSPA8 addition were tested between 0.2 and 12.8 μg/mL. When bull spermatozoa (from beef and dairy breeds) were frozen in the presence of HSPA8, beneficial but complex effects on postthaw viability were observed. Low HSPA8 concentrations (0.2 and 0.4 μg/mL) resulted in significantly reduced postthaw sperm viability, but concentrations above 0.8 μg/mL improved plasma membrane integrity. If HSPA8 was added to spermatozoa after thawing, outcomes were also biphasic and beneficial effects on viability were only seen if the HSPA8 concentration exceeded 3.2 μg/mL. Beneficial effects were significantly more apparent with beef rather than dairy breeds. When HSPA8 was used in combination with cholesterol-loaded cyclodextrin, spermatozoa from the beef breeds showed significantly lower apoptotic effects. This was not observed with the dairy breeds.
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Affiliation(s)
- W V Holt
- Department of Human Metabolism, Academic Unit of Reproductive and Developmental Medicine, Sheffield, UK.
| | - I Del Valle
- Department of Human Metabolism, Academic Unit of Reproductive and Developmental Medicine, Sheffield, UK
| | - A Fazeli
- Department of Human Metabolism, Academic Unit of Reproductive and Developmental Medicine, Sheffield, UK
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Zhao XM, Ren JJ, Zhao SJ, Cui LS, Hao HS, Wang HY, Du WH, Qin T, Liu Y, Wang D, Zhu HB. Apoptosis-like events and in vitro fertilization capacity of sex-sorted bovine sperm. Reprod Domest Anim 2014; 49:543-549. [PMID: 24894655 DOI: 10.1111/rda.12305] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 02/14/2014] [Indexed: 12/24/2022]
Abstract
This study utilized three staining assays (Annexin V, mitochondrial membrane potential (JC-1) and TUNEL) for flow cytometric analysis of apoptosis in sex-sorted sperm from four different bulls (A, B, C and D). Correlations between sperm quality and IVF efficiency were then assessed to determine which assay provided the best prediction of IVF efficiency. The results of the Annexin V assays, as well as measures of viable sperm, early apoptosis, necrotic sperm and mitochondrial membrane potential (∆ψm) showed that the sex-sorted sperm collected from bull A significantly differed from those of the other three bulls (p < 0.05). In addition, the levels of DNA fragmentation in sex-sorted sperm from bull A were significantly lower than those from bulls B and C (p < 0.05). The percentage of cells reaching the cleavage and blastocyst stages in sex-sorted sperm from bull A were significantly greater than those from the other bulls (p < 0.05). A significant positive correlation was observed between viable sperm and the percentage of cells at the cleavage or blastocyst stages (p < 0.05). In contrast, a negative correlation was found between early apoptotic sperm and the percentage of cells at the cleavage or blastocyst stages (p < 0.05). In conclusion, these results indicated that the Annexin V assay was the most reliable technique for the prediction of the IVF success of sex-sorted bovine sperm.
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Affiliation(s)
- X-M Zhao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Science (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - J-J Ren
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Science (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - S-J Zhao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Science (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - L-S Cui
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Science (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - H-S Hao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Science (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - H-Y Wang
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Science (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - W-H Du
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Science (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - T Qin
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Science (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Y Liu
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Science (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - D Wang
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Science (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - H-B Zhu
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Science (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
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Johinke D, de Graaf S, Bathgate R. Investigation of in vitro parameters and in vivo fertility of rabbit spermatozoa after chilled storage. Anim Reprod Sci 2014; 147:135-43. [DOI: 10.1016/j.anireprosci.2014.04.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 04/25/2014] [Accepted: 04/26/2014] [Indexed: 11/26/2022]
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Standerholen FB, Myromslien FD, Kommisrud E, Ropstad E, Waterhouse KE. Comparison of electronic volume and forward scatter principles of cell selection using flow cytometry for the evaluation of acrosome and plasma membrane integrity of bull spermatozoa. Cytometry A 2014; 85:719-28. [DOI: 10.1002/cyto.a.22474] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 03/07/2014] [Accepted: 04/06/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Fride Berg Standerholen
- Department of Production Animal Clinical Sciences; Norwegian School of Veterinary Sciences; Oslo Norway
- Department of Natural Sciences and Technology; Hedmark University College; Hamar Norway
| | | | - Elisabeth Kommisrud
- Department of Natural Sciences and Technology; Hedmark University College; Hamar Norway
| | - Erik Ropstad
- Department of Production Animal Clinical Sciences; Norwegian School of Veterinary Sciences; Oslo Norway
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GLTSCR2/PICT1 links mitochondrial stress and Myc signaling. Proc Natl Acad Sci U S A 2014; 111:3781-6. [PMID: 24556985 DOI: 10.1073/pnas.1400705111] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Mitochondrial defects underlie a multitude of human diseases. Genetic manipulation of mitochondrial regulatory pathways represents a potential therapeutic approach. We have carried out a high-throughput overexpression screen for genes that affect mitochondrial abundance or activity using flow-cytometry-based enrichment of a cell population expressing a high-complexity, concentration-normalized pool of human ORFs. The screen identified 94 candidate mitochondrial regulators including the nuclear protein GLTSCR2, also known as PICT1. GLTSCR2 enhances mitochondrial function and is required for the maintenance of oxygen consumption, consistent with a pivotal role in the control of cellular respiration. RNAi inactivation of the Caenorhabditis elegans ortholog of GLTSCR2 reduces respiration in worms, indicating functional conservation across species. GLTSCR2 controls cellular proliferation and metabolism via the transcription factor Myc, and is induced by mitochondrial stress, suggesting it may constitute a significant component of the mitochondrial signaling pathway.
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Petrunkina AM, Harrison RAP. Fluorescence Technologies for Evaluating Male Gamete (Dys)Function. Reprod Domest Anim 2013; 48 Suppl 1:11-24. [DOI: 10.1111/rda.12202] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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41
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Contri A, Gloria A, Robbe D, Valorz C, Wegher L, Carluccio A. Kinematic study on the effect of pH on bull sperm function. Anim Reprod Sci 2012; 136:252-9. [PMID: 23238050 DOI: 10.1016/j.anireprosci.2012.11.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 11/12/2012] [Accepted: 11/16/2012] [Indexed: 10/27/2022]
Abstract
Since the mammalian spermatozoa became capable of motion, during the epididymal transit, the spermatozoon swims in a liquid medium and it is completely dependent on the environmental conditions. Some reports have suggested an influence of pH on sperm kinetic characteristics, but no study has objectively described how motility changes in a different environmental pH. In this study, we evaluated the effect of different environmental pHs (5.5, 6, 6.5, 7, 7.5, 8, and 8.5) on kinetic parameters, sperm viability, mitochondrial activity, and sperm morphology of bull semen immediately and 1h after dilution. The results showed higher values for sperm motility characteristics, viability, and mitochondrial activity at pH 7 and 7.5. Values of pH lower than 6.5 and higher than 8 resulted in suboptimal motility, with a decrease in most parameters. At pH 8 and 8.5, a discrepancy between viability and total and progressive motility was found, with a significant amount of spermatozoa that were live but immotile. This reduction seemed related to a decrease in mitochondrial activity, possibly due to the increase in pH. The flow cytometric evaluation of sperm viability assessed by calcein AM was very consistent with the amount of spermatozoa with membrane integrity, evaluated in fluorescence by propidium iodide/SYBR-14 stain. Thus, the calcein AM stain could be used as viability stain instead the classic propidium iodide/SYBR-14 stain because this could allow the addiction of other functional stains without a overlapping of the fluorescent signal in the flow cytometer.
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Affiliation(s)
- Alberto Contri
- Department of Veterinary Clinical Sciences, University of Teramo, Viale Crispi 212, 64100 Teramo, Italy
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Del Valle I, Gómez-Durán A, Holt WV, Muiño-Blanco T, Cebrián-Pérez JA. Soy lecithin interferes with mitochondrial function in frozen-thawed ram spermatozoa. JOURNAL OF ANDROLOGY 2012; 33:717-25. [PMID: 22134371 DOI: 10.2164/jandrol.111.014944] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Egg yolk and milk are the 2 major membrane cryoprotectants commonly used in freezing media for the long-term preservation of semen (alone or in combination with others). However, in recent years, there have been increasing arguments against the use of egg yolk or milk because of the risk of introducing diseases through the use of cryopreserved semen. In this study, we analyzed the protective effect of lecithin as an alternative to egg yolk for the cryopreservation of ram semen, using a range of functional markers for sperm viability, motility, apoptosis, and mitochondrial functionality analyses (mitochondrial inner membrane surface [MIMS], mitochondrial inner membrane potential [MIMP], and cell membrane potential) as methods of assessment in samples diluted in 3 different media: Tris-citrate-glucose as control and 2 media supplemented with soy lecithin or egg yolk. The results showed that lecithin was able to effectively protect certain sperm quality characteristics against freezing-induced damage. However, lecithin induced loss of mitochondrial membrane potential or mitochondrial loss that was not reflected by modifications in sperm motility in fresh semen. MIMS and MIMP values decreased in thawed lecithin-treated samples, concomitant with a lower (P < .05) percentage of total and progressively motile cells, compared with those in egg yolk-containing samples. Further incubation of thawed samples revealed changes in motility and mitochondrial functionality that otherwise would not have been detected. These results indicated that lecithin may have affected the inner mitochondrial membrane in frozenthawed spermatozoa and confirmed that sublethal damages that seriously affect sperm functionality, not detected by classic sperm quality analyses, can be evidenced by changes in the inner mitochondrial membrane surface. These findings strengthen the relationship between mitochondrial membrane potential and motility and show that the mitochondrial alterations induced by the cryopreservation process could be specific targets for the improvement of semen cryopreservation protocols.
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Affiliation(s)
- I Del Valle
- Department of Biochemistry and Molecular and Cell Biology, University of Zaragoza, Miguel Servet, 177, 50013 Zaragoza, Spain
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Terrell KA, Wildt DE, Anthony NM, Bavister BD, Leibo S, Penfold LM, Marker LL, Crosier AE. Different patterns of metabolic cryo-damage in domestic cat (Felis catus) and cheetah (Acinonyx jubatus) spermatozoa. Cryobiology 2012; 64:110-7. [DOI: 10.1016/j.cryobiol.2011.12.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2011] [Revised: 11/01/2011] [Accepted: 12/22/2011] [Indexed: 11/26/2022]
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Shojaei H, Kroetsch T, Wilde R, Blondin P, Kastelic J, Thundathil J. Moribund sperm in frozen-thawed semen, and sperm motion end points post-thaw and post-swim-up, are related to fertility in Holstein AI bulls. Theriogenology 2012; 77:940-51. [DOI: 10.1016/j.theriogenology.2011.09.026] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2011] [Revised: 09/14/2011] [Accepted: 09/26/2011] [Indexed: 11/16/2022]
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Carreira JT, Mingoti GZ, Rodrigues LH, Silva C, Perri SHV, Koivisto MB. Impact of proximal cytoplasmic droplets on quality traits and in-vitro embryo production efficiency of cryopreserved bull spermatozoa. Acta Vet Scand 2012; 54:1. [PMID: 22240071 PMCID: PMC3292455 DOI: 10.1186/1751-0147-54-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Accepted: 01/12/2012] [Indexed: 11/28/2022] Open
Abstract
Background Proximal cytoplasmic droplets (PCDs), a remnant of germ cell cytoplasm, are common non-specific morphological defects in bovine semen. This study evaluated the effect of higher percentages of PCDs on the quality of frozen-thawed bovine semen, embryo production and early embryo development. Methods Three ejaculates from each of five (group 1: PCD ≤ 1%, control) and eight adult Bos indicus bulls (group 2: PCD ≥ 24%) were analysed. Semen samples were examined for: post-thaw motility, vigour of movement, concentration, sperm morphology, slow thermoresistance test (STT), membrane integrity, acrosome status, mitochondrial function using fluorescent probes association (FITC-PSA, PI and JC-1) and sperm chromatin integrity using acridine orange assay. Two bulls from group 2, with 28.5% and 48.5% PCD, respectively, and three bulls from the control group, each with 0% PCD, were selected for IVF (in vitro fertilisation). Results Semen analyses revealed a significant correlation (P < 0.01) between increased rates of PCD and sperm quality traits. Nevertheless, no differences were observed in sperm motility and vigour either before or after the STT or in the percentage of intact acrosomes (analysed by differential interference contrast microscopy (DIC) after STT), but membrane integrity, acrosome status (evaluated with FITC-PSA staining method after thawing) and mitochondrial function were reduced, when compared with group 1 (P < 0.05). The higher incidence of PCD was positively correlated to chromatin damage, especially after three hours of incubation at 37°C. IVF showed similar results for bull C2 (group 1, control) and bull P2 (group 2, group with higher PCDs). Conclusion Higher PCD levels influenced spermatozoa quality traits. IVF and embryo development data showed that cleavage, blastocyst formation and blastocyst hatching may have been influenced by the interaction of morphology traits and individual bull effects.
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Wong JH, Ng TB, Legowska A, Rolka K, Hui M, Cho CH. Antifungal action of human cathelicidin fragment (LL13-37) on Candida albicans. Peptides 2011; 32:1996-2002. [PMID: 21889964 DOI: 10.1016/j.peptides.2011.08.018] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 08/19/2011] [Accepted: 08/20/2011] [Indexed: 11/18/2022]
Abstract
Human cathelicidin LL37 and its fragments LL13-37 and LL17-32 exhibited similar potencies in inhibiting growth of the yeast Candida albicans. After treatment with 0.5 μM and 5 μM LL13-37, the hyphae changed from a uniformly thick to an increasingly slender appearance, with budding becoming less normal in appearance and cell death could be detected. Only the yeast form and no hyphal form could be observed following exposure to 50 μM LL13-37. LL13-37 at a concentration of 5 μM was able to permeabilize the membrane of yeast form as well as hyphal form of C. albicans since the nuclear stain SYTOX Green was localized in both forms. Mycelia treated with LL13-37 stained with SYTOX Green, but did not stain with MitoTracker deep red, indicating that the mitochondria were adversely affected by LL13-37. Bimane-labeled LL13-37 was able to enter some of the hyphae, but not all hyphae were affected, suggesting that LL37 impaired membrane permeability characteristics in some of the hyphae. Reactive oxygen species was detectable in the yeast form of C. albicans cells after treatment with LL13-37 but not in the untreated cells. The results suggest that the increased membrane permeability caused by LL13-37 might not be the sole cause of cell death. It might lead to the uptake of the peptide, which might have some intracellular targets.
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Affiliation(s)
- Jack Ho Wong
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong.
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Gloria A, Contri A, De Amicis I, Robbe D, Carluccio A. Differences between epididymal and ejaculated sperm characteristics in donkey. Anim Reprod Sci 2011; 128:117-22. [DOI: 10.1016/j.anireprosci.2011.09.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Revised: 09/15/2011] [Accepted: 09/18/2011] [Indexed: 10/17/2022]
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Contri A, Gloria A, Robbe D, De Amicis I, Carluccio A. Characteristics of donkey spermatozoa along the length of the epididymis. Theriogenology 2011; 77:166-73. [PMID: 21872312 DOI: 10.1016/j.theriogenology.2011.07.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Revised: 07/14/2011] [Accepted: 07/19/2011] [Indexed: 11/19/2022]
Abstract
In mammals, the epididymis has numerous interrelated functions including absorptive and secretory activity that affect luminal environment and cell membrane, and the maturation and storage of sperm. Spermatozoa acquire their motility and fertilizing ability during their passage through the epididymis and the motility of epididymal spermatozoa should be a balance between the maturation of flagellum and the inhibition of the flagellar machinery. In this study maturational change in sperm characteristics were evaluated in the epididymis of donkey. Spermatozoa collected from four portions of the epididymis (head, cranial corpus, caudal corpus, tail) were compared before and after ejaculation for viability, mitochondrial activity, kinetic parameters, and morphology. A significant increase in the mitochondrial activity along the epididymis was reported, suggesting a possible involvement in the motion mechanism. This should be corroborated by the significant correlation between mitochondrial activity and the total and progressive motility and the increase in velocities of spermatozoa recorded by computer-assisted sperm analysis. The percentage of most of the abnormal spermatozoa were similar in all tracts, with a great variability between jackasses. Only the bent midpiece percentage decreased significantly along epididymis. A significant increase in the percentage of distal cytoplasmic droplets (DCD), and a simultaneous decrease in the proximal cytoplasmic droplets (PCD), was found. The DCD fell down after ejaculation suggesting the late loss of the cytoplasmic residual (DCD) in the donkey, as hypothesized in the stallion. Because the prevalence of PCD were similar in both tail epididymal and ejaculated spermatozoa, a defect of the maturative process in the PCD sperm should be speculated.
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Affiliation(s)
- A Contri
- Department of Veterinary Clinical Sciences, University of Teramo, Teramo, Italy
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Anzar M, Kroetsch T, Boswall L. Cryopreservation of bull semen shipped overnight and its effect on post-thaw sperm motility, plasma membrane integrity, mitochondrial membrane potential and normal acrosomes. Anim Reprod Sci 2011; 126:23-31. [DOI: 10.1016/j.anireprosci.2011.04.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Revised: 04/17/2011] [Accepted: 04/26/2011] [Indexed: 10/18/2022]
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Hossain MS, Johannisson A, Wallgren M, Nagy S, Siqueira AP, Rodriguez-Martinez H. Flow cytometry for the assessment of animal sperm integrity and functionality: state of the art. Asian J Androl 2011; 13:406-19. [PMID: 21478895 PMCID: PMC3739346 DOI: 10.1038/aja.2011.15] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Revised: 11/19/2010] [Accepted: 01/26/2011] [Indexed: 11/09/2022] Open
Abstract
Flow cytometry is now a recognized methodology within animal spermatology, and has moved from being a research tool to become routine in the assessment of animal semen destined to breeding. The availability of 'bench-top' flow cytometers and of newer and versatile markers for cell structure and function had allowed the instrumentation to measure more sperm parameters, from viability to reactiveness when exposed to exogenous stimuli, and to increase our capabilities to sort spermatozoa for potential fertilizing capacity, or chromosomal sex. The present review summarizes the state of the art regarding flow cytometry applied to animal andrology, albeit keeping an open comparative intent. It critically evaluates the present and future capabilities of flow cytometry for the diagnostics of potential fertility and for the development of current reproductive technologies such as sperm freezing, sperm selection and sperm sorting. The flow cytometry methods will probably further revolutionize our understanding of the sperm physiology and their functionality, and will undoubtedly extend its application in isolating many uncharacterized features of spermatozoa. However, continuous follow-up of the methods is a necessity owing to technical developments and the complexity of mapping spermatozoa.
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Affiliation(s)
- Md Sharoare Hossain
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences (SLU), SE-750 07 Uppsala, Sweden
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