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Brito LFC. Quality assurance applied to semen analysis. Anim Reprod Sci 2024; 270:107615. [PMID: 39366167 DOI: 10.1016/j.anireprosci.2024.107615] [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: 08/04/2024] [Revised: 09/24/2024] [Accepted: 09/26/2024] [Indexed: 10/06/2024]
Abstract
Artificial insemination is an important biotechnology employed in livestock production. Production of semen products requires analysis of sperm concentration, motility and morphology. Although adequate analytical procedures are essential to ensure product quality, several multicenter studies have reported large variations in semen analysis results within and across laboratories. Differences in equipment and methodology, inconsistent training and performance testing, and lack of quality assurance programs are likely responsible for these observations. The somewhat pervasive perception that semen analysis is a trivial task must be challenged as it jeopardizes efficient semen production and germplasm utilization. This manuscript reviews the Quality Assurance (QA) procedures recommended to control results obtained during semen analysis. Reference, standard technical specifications for basic semen analysis are also described.
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Affiliation(s)
- Leonardo F C Brito
- Department of Clinical Studies - New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA 19348, USA.
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2
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Behairy A, Hashem MMM, Abo-El-Sooud K, El-Metwally AE, Soliman AM, Mouneir SM, Hassan BA, Abd-Elhakim YM. Mitigating effect of gallic acid on zinc oxide nanoparticles and arsenic trioxide-induced spermatogenesis suppression, testicular injury, hormonal imbalance, and immunohistochemical changes in rats. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03228-y. [PMID: 38935127 DOI: 10.1007/s00210-024-03228-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024]
Abstract
The current study compared the effects of incorporated exposure to arsenic trioxide (As) and zinc oxide nanoparticles (ZnONPs) on male reproductive hormones, oxidative stress, and inflammatory biomarkers in adult rats to each metal alone. A defensive trial with gallic acid (GA) has also been studied. A total of 60 adult male Sprague Dawley rats were categorized into six groups: control, GA (20 mg/kg), ZnONPs (100 mg/kg), As (8 mg/kg), ZnONPs with As, and GA concurrently with ZnONPs and As at the same previous doses. The regimens were applied for 60 days in sequence. Current findings showed significant weight loss in all study groups, with testicular weights significantly decreased in the As and combined groups. Testosterone, follicular stimulating hormone, and luteinizing hormone serum levels were also considerably reduced, while serum levels of estradiol increased. Inducible nitric oxide synthase (iNOS) immunoexpression was significantly upregulated while proliferating cell nuclear antigen (PCNA) was downregulated. Moreover, there was a significant elevation of testicular malondialdehyde, reduction of testicular superoxide dismutase, and glutathione peroxidase with disruptive testes, prostate glands, and seminal vesicle alterations in all experimental groups with marked changes in the combined group. Additionally, the present results revealed the protective effects of GA on ZnONPs and As adverse alterations in rats. GA enhanced sperm picture, oxidant status, and hormonal profile. Also, it modulates iNOS and PCNA immunoexpression and recovers the histoarchitecture of the testes, prostate glands, and seminal vesicles. Ultimately, GA may be a promising safeguarding agent against ZnONPs and As-induced disturbances to reproductive parameters.
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Affiliation(s)
- Amany Behairy
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44519, Egypt
| | - Mohamed M M Hashem
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Khaled Abo-El-Sooud
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Abeer E El-Metwally
- Pathology Department, Animal Reproduction Research Institute, Giza, 3514805, Egypt
| | - Ahmed M Soliman
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Samar M Mouneir
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Bayan A Hassan
- Pharmacology Department, Faculty of Pharmacy, Future University, Cairo, 11835, Egypt
| | - Yasmina M Abd-Elhakim
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44519, Egypt.
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3
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Rosellen J, Dittmar F, Hauptmann A, Diemer T, Schuppe HC, Schagdarsurengin U, Fritzenwanker M, Wagenlehner F, Pilatz A. Impaired Semen Quality in Patients with Chronic Prostatitis. J Clin Med 2024; 13:2884. [PMID: 38792425 PMCID: PMC11122295 DOI: 10.3390/jcm13102884] [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: 04/09/2024] [Revised: 05/09/2024] [Accepted: 05/11/2024] [Indexed: 05/26/2024] Open
Abstract
Background/Objectives: Chronic prostatitis/chronic pelvic pain syndrome CP/CPPS is a rather common condition and in recent years many studies have shown contradictory results regarding its impact on semen quality. This prospective cohort study set out to investigate how CP/CPPS affected the parameters of semen in a prospective cohort of patients compared with the WHO 2021 reference group. Methods: From 2013 to 2022, a total of 1071 patients with suspicion of CP/CPPS received a comprehensive andrological examination. Complete semen analysis was carried out in compliance with WHO 2010 guidelines, comparing every study population semen variable to the WHO 2021 reference group (n~3500). Results: All evaluated semen parameters had median values that fell within a normal range. Nonetheless, approximately 25% of patients had values for each semen variable that were lower than the WHO reference group's fifth percentile. In particular, bacteriospermia was associated with a negative impact on semen volume. Conclusions: This is the largest study that compares all standard semen parameters in patients suffering from CP/CPPS to WHO 2021 reference values. It provides evidence of an impairment of conventional semen parameters.
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Affiliation(s)
- Jens Rosellen
- Clinic of Urology, Pediatric Urology and Andrology, Justus Liebig University Giessen, Rudolf-Buchheim-Strasse 7, 35392 Giessen, Germany; (F.D.); (A.H.); (T.D.); (H.-C.S.); (U.S.); (F.W.); (A.P.)
| | - Florian Dittmar
- Clinic of Urology, Pediatric Urology and Andrology, Justus Liebig University Giessen, Rudolf-Buchheim-Strasse 7, 35392 Giessen, Germany; (F.D.); (A.H.); (T.D.); (H.-C.S.); (U.S.); (F.W.); (A.P.)
| | - Arne Hauptmann
- Clinic of Urology, Pediatric Urology and Andrology, Justus Liebig University Giessen, Rudolf-Buchheim-Strasse 7, 35392 Giessen, Germany; (F.D.); (A.H.); (T.D.); (H.-C.S.); (U.S.); (F.W.); (A.P.)
| | - Thorsten Diemer
- Clinic of Urology, Pediatric Urology and Andrology, Justus Liebig University Giessen, Rudolf-Buchheim-Strasse 7, 35392 Giessen, Germany; (F.D.); (A.H.); (T.D.); (H.-C.S.); (U.S.); (F.W.); (A.P.)
| | - Hans-Christian Schuppe
- Clinic of Urology, Pediatric Urology and Andrology, Justus Liebig University Giessen, Rudolf-Buchheim-Strasse 7, 35392 Giessen, Germany; (F.D.); (A.H.); (T.D.); (H.-C.S.); (U.S.); (F.W.); (A.P.)
| | - Undraga Schagdarsurengin
- Clinic of Urology, Pediatric Urology and Andrology, Justus Liebig University Giessen, Rudolf-Buchheim-Strasse 7, 35392 Giessen, Germany; (F.D.); (A.H.); (T.D.); (H.-C.S.); (U.S.); (F.W.); (A.P.)
| | - Moritz Fritzenwanker
- Institute for Medical Microbiology, Justus Liebig University Giessen, 35390 Giessen, Germany;
| | - Florian Wagenlehner
- Clinic of Urology, Pediatric Urology and Andrology, Justus Liebig University Giessen, Rudolf-Buchheim-Strasse 7, 35392 Giessen, Germany; (F.D.); (A.H.); (T.D.); (H.-C.S.); (U.S.); (F.W.); (A.P.)
| | - Adrian Pilatz
- Clinic of Urology, Pediatric Urology and Andrology, Justus Liebig University Giessen, Rudolf-Buchheim-Strasse 7, 35392 Giessen, Germany; (F.D.); (A.H.); (T.D.); (H.-C.S.); (U.S.); (F.W.); (A.P.)
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Bruno SL, Neild DM, Plaza JP, Ferrante AA, Carretero MI, Olivieri GEA, Bianchi CP, Miragaya MH. Comparison of different cryoprotectants for freezing donkey (Equus asinus) semen. J Equine Vet Sci 2024; 136:105069. [PMID: 38599258 DOI: 10.1016/j.jevs.2024.105069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 04/05/2024] [Accepted: 04/06/2024] [Indexed: 04/12/2024]
Abstract
The aim of this study was to evaluate two cryoprotectants, dimethylformamide (DMF) and methylformamide (MF) in two concentrations (5 and 7 %) in vitro in donkey semen using a rapid freezing technique and the effect on pregnancy rates in mares. Twenty-four ejaculates from 8 jacks (n = 8; r = 3) were divided into 4 extenders: BotuSemen Gold with 5 % or 7 % MF and 5 % or 7 % DMF, all containing 11 % lactose, 20 % egg-yolk and 0.5 % Equex. Post-thaw evaluations included: sperm motility, membrane function and acrosome status. A linear mixed effect model was used to test the effect of different freezing media on semen parameters. No differences were observed between the 4 freezing media used, for any of the seminal parameters (P > 0.05). However, samples with 5 % DMF showed the highest percentages of sperm with acrosomes and functional membranes (DMF: 5 %: 53.67 ± 22.01; 7 %: 33.92 ± 23.4; MF: 5 %: 44.5 ± 20.46; 7 %: 38.75 ± 27.4) (Data: mean ± SD; P > 0.05). Hence, thirty mares were inseminated: 15 with 5 % DMF and 15 with 7 % DMF. The pregnancy rate was 46 % (7/15) and 0 % (0/15) using the extender with 5 % or 7 % DMF, respectively (P = 0.003). To conclude, the use of 5 % or 7 % of MF or DMF did not affect the in vitro parameters. Despite the lack of differences in vitro with the two DMF concentrations, in vivo results only showed pregnancies when using 5 % DMF. Thus, the results of this study demonstrate the importance of accompanying in vitro semen evaluations with studies that evaluate post-insemination pregnancy rates.
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Affiliation(s)
- S L Bruno
- Haras Militar "General Lavalle", Dirección de Remonta y Veterinaria, Ejército Argentino, Sección Chacras, Tandil, Buenos Aires, CP7000, Argentina
| | - D M Neild
- Cátedra de Teriogenología, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Universidad de Buenos Aires, Avenida Chorroarín 280, Ciudad Autónoma de Buenos Aires, Buenos Aires, C1427CWO, Argentina
| | - J P Plaza
- Cátedra de Teriogenología, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Universidad de Buenos Aires, Avenida Chorroarín 280, Ciudad Autónoma de Buenos Aires, Buenos Aires, C1427CWO, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290 Ciudad Autónoma de Buenos Aires, Buenos Aires, C1425FQB, Argentina.
| | - A A Ferrante
- Cátedra de Teriogenología, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Universidad de Buenos Aires, Avenida Chorroarín 280, Ciudad Autónoma de Buenos Aires, Buenos Aires, C1427CWO, Argentina
| | - M I Carretero
- Cátedra de Teriogenología, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Universidad de Buenos Aires, Avenida Chorroarín 280, Ciudad Autónoma de Buenos Aires, Buenos Aires, C1427CWO, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290 Ciudad Autónoma de Buenos Aires, Buenos Aires, C1425FQB, Argentina
| | - G E A Olivieri
- Haras Militar "General Lavalle", Dirección de Remonta y Veterinaria, Ejército Argentino, Sección Chacras, Tandil, Buenos Aires, CP7000, Argentina
| | - C P Bianchi
- Centro de Investigación Veterinaria de Tandil (CIVETAN), UNCPBA-CONICET-CICPBA, Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la provincia de Buenos Aires, Campus Universitario Tandil, Provincia de Buenos Aires, B7000GHG, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290 Ciudad Autónoma de Buenos Aires, Buenos Aires, C1425FQB, Argentina
| | - M H Miragaya
- Cátedra de Teriogenología, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Universidad de Buenos Aires, Avenida Chorroarín 280, Ciudad Autónoma de Buenos Aires, Buenos Aires, C1427CWO, Argentina
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Martins MIM, Silva VW, Hidalgo MMT, Fontbonne A. Insights into alternative cryoprotectants to freeze sperm of domestic cats. Reprod Domest Anim 2024; 59:e14524. [PMID: 38268208 DOI: 10.1111/rda.14524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 12/03/2023] [Accepted: 12/24/2023] [Indexed: 01/26/2024]
Abstract
Globalization and habitat destruction pose a significant threat to wildlife felids. Even though conservation banks for genetic materials have been created, the sperm cryopreservation with minimal cell damage is still a great challenge. Thus, this study aimed to compare the effects of two commercial extenders with different concentrations of alternative cryoprotectants on thawed sperm quality of domestic cats. Five adult cats were anaesthetized (using a combination of 40 μg/kg medetomidine associated to 5 mg/kg ketamine), and the semen was collected by electroejaculation (electrical stimulation of 2-3 V). Semen samples were evaluated for sperm characteristics (kinetics, morphology, membrane integrity and morphometry). Subsequently, they were sorted into two aliquots and centrifuged. The aliquots were added to a commercial extender containing 3% glycerol and 2% methylformamide (extender I) or 2% glycerol and 3% methylformamide (extender II), frozen, thawed (37°C/30 s) and reevaluated. Comparatively, the sperm kinetics and membrane integrity of fresh semen were higher (p < .002) than frozen samples in extender I and II. Total and progressive motility were lowest in the thawed samples. However, the subjective analysis indicated high sperm motility, since the kinetics evaluation was impaired by the low cell number in the thawed samples. There were no differences in sperm morphology between the groups. In the sperm morphometric analysis, a significant difference (p = .04) was identified in the length of the intermediate piece in extender II samples compared with fresh and extender I. Thus, it can be concluded that although the concentrations tested did not maintain the kinetic parameters and membrane integrity of spermatozoa after thawing, the extender with a lower concentration of glycerol was less toxic for maintaining the midpiece length.
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Akal E. Evaluation of sperm counting accuracy on computer-assisted sperm analysis with GoldCyto® slides and glass slides. Front Vet Sci 2023; 10:1283128. [PMID: 37876632 PMCID: PMC10591095 DOI: 10.3389/fvets.2023.1283128] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 09/28/2023] [Indexed: 10/26/2023] Open
Abstract
Worldwide, various counting chambers and computer-assisted sperm analysis (CASA) devices are in use. The semen's concentration can vary depending on the depth of the counting chamber and how it is loaded. The study's objectives were to analyze the effects of various counting chambers on semen concentration results using a GoldCyto® slide and a glass slide in the CASA system and to ascertain the precision of concentration measurements made using glass slides on CASA. The study's control group was composed of samples with known concentrations (72-80 million sperm/mL) as determined by a spectrophotometer. A total of 21 frozen straws from the same bull of the same date were thawed at 37°C for 30 s and loaded into two different sperm-counting chambers (GoldCyto® slide and glass slide). The sample semen placed in the sperm counting chambers was 5 μL and the same value was entered in the CASA software as 5 μL. Measurements were done and evaluated in 5 different areas. According to the data we obtained, using the glass slide were statistically lower than the spectrophotometer (p < 0.001). GoldCyto® slide results were consistent with spectrophotometer results. Consequently, measurements with GoldCyto® slides in the CASA had consistent results, while measurements with glass slides were inconsistent. It was concluded that GoldCyto® slides are more suitable than glass slides in the concentration examinations of semen. Therefore, more study is needed to optimize the use of glass slides.
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Affiliation(s)
- Eser Akal
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Ondokuz Mayıs University, Samsun, Türkiye
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7
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Gloria A, Bracco C, Antenucci E, Contri A. Validation of the volumetric flow cytometry for bovine sperm concentration. Sci Rep 2023; 13:16560. [PMID: 37783767 PMCID: PMC10545691 DOI: 10.1038/s41598-023-43678-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 09/27/2023] [Indexed: 10/04/2023] Open
Abstract
Sperm concentration is a stronghold of the andrological evaluation and the production of insemination doses. The use of haemocytometers, although considered the gold standard, is difficult to apply in field conditions because it is subjective and time-consuming. The present study was designed to validate the volumetric flow cytometry (volFC) in order to estimate bovine sperm concentration, comparing it with the performances of haemocytometer, NucleoCounter, and flow cytometry with the use of fluorospheres. Compared with other methods, volFC appeared less affected by large dilution of the sample, with similar concentrations calculated in the range of dilution 1:200-1:800. Using volFc the population detected on the basis of morphological criteria and fluorescence of DNA better represents the real concentration of sperm in the sample. The volFC showed high repeatability compared with the haemocytometer (coefficient of variation 1.85% and 4.52%, respectively) and stable performances with cryopreserved samples, with negligible effects of the medium components. The present study showed that volFC is as accurate and precise as other techniques to estimate sperm concentration in bovine fresh and frozen semen, but it is less affected by operative conditions, such as sample dilution. The possibility to quantify sperm functional subpopulations by volFC could potentially implement the study of the relationship between sperm attributes and fertility.
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Affiliation(s)
- Alessia Gloria
- Department of Veterinary Medicine, University of Teramo, Località Piano D'Accio, 64100, Teramo, Italy
| | - Claudia Bracco
- Department of Veterinary Medicine, University of Teramo, Località Piano D'Accio, 64100, Teramo, Italy
| | - Emiliana Antenucci
- Provincial Breeders Federation of Trento, Via delle Bettine 40, 38121, Trento, Italy
| | - Alberto Contri
- Department of Veterinary Medicine, University of Teramo, Località Piano D'Accio, 64100, Teramo, Italy.
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Sevilla F, Soler C, Araya-Zúñiga I, Barquero V, Roldan ERS, Valverde A. Are There Differences between Methods Used for the Objective Estimation of Boar Sperm Concentration and Motility? Animals (Basel) 2023; 13:ani13101622. [PMID: 37238052 DOI: 10.3390/ani13101622] [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: 03/14/2023] [Revised: 05/05/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
Artificial insemination in the swine industry, as in other species, demands adequate semen handling and accurate evaluation for the preparation of seminal doses. Sperm concentration and motility estimates are part of the semen evaluation process and are considered important for maximizing the yield of doses for insemination. In this study, methods were examined for their accuracy in the estimation of boar sperm concentration and motility. Assessments of sperm concentration were carried out using iSperm®, ISAS® v1, Open CASA v2, and the Accuread® photometer. Analyses of sperm motility were performed with iSperm®, ISAS® v1, and Open CASA v2 systems. In this study, boar semen samples were collected from 10 healthy males from two genetic lines. There were no relevant differences between sire lines when sperm concentration was assessed. A Bayesian analysis was applied to the four methods used to assess sperm concentration to examine whether there are relevant differences between them. Results suggested differences in the four methods, with a probability of relevance (PR) of 0.86-1.00. The iSperm® method revealed higher concentration values within the highest posterior density region at 95% confidence interval (HPD95%) = 167.0, 224.2 M/mL, whereas Open CASA v2 showed the lowest values, with HPD95% = 99.3, 155.9 M/mL. The iSperm® demonstrated higher reliability in measuring sperm concentration compared to other methods or devices within the given range of confidence. ANOVAs revealed relevant differences in the three methods of motility estimation. Overall, differences in boar sperm concentration and motility estimates were found using various methods, but further studies are needed for better characterization of these differences.
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Affiliation(s)
- Francisco Sevilla
- Costa Rica Institute of Technology, School of Agronomy, San Carlos Campus, Alajuela 223-21002, Costa Rica
- Costa Rica Institute of Technology, Doctorate in Natural Sciences for Development (DOCINADE), San Carlos Campus, Alajuela 223-21002, Costa Rica
| | - Carles Soler
- Department of Cellular Biology, Functional Biology and Physical Anthropology, Campus Burjassot, University of Valencia, C/Dr Moliner, 50, 46100 Burjassot, Spain
| | - Ignacio Araya-Zúñiga
- Costa Rica Institute of Technology, School of Agronomy, San Carlos Campus, Alajuela 223-21002, Costa Rica
| | - Vinicio Barquero
- Faculty of Agri-Food Sciences, Alfredo Volio Mata Experimental Station, University of Costa Rica, Cartago 11501-2060, Costa Rica
| | - Eduardo R S Roldan
- Department of Biodiversity and Evolutionary Biology, National Museum of Natural Sciences, Spanish National Research Council (CSIC), 28006 Madrid, Spain
| | - Anthony Valverde
- Costa Rica Institute of Technology, School of Agronomy, San Carlos Campus, Alajuela 223-21002, Costa Rica
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Ngcobo JN, Nedambale TL, Mpofu TJ, Nephawe KA, Chokoe TC, Ramukhithi FV. Seasonal Variations in Semen Quality, Testosterone Levels, and Scrotal Size following Dietary Flaxseed Oil and Ascorbic Acid in South African Indigenous Rams. Animals (Basel) 2023; 13:ani13071213. [PMID: 37048468 PMCID: PMC10093531 DOI: 10.3390/ani13071213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 03/28/2023] [Accepted: 03/29/2023] [Indexed: 04/03/2023] Open
Abstract
The purpose of this study was to determine the seasonal variations in semen quality, testosterone levels, and scrotal size, following dietary flaxseed oil and ascorbic acid in South African indigenous rams. A total of 22 South African indigenous rams were randomly distributed into five treatment diets from June 2021 to May 2022 (12 months). To allow for the spermatogenesis period, semen was collected after sixty days of dietary supplementation with treatment diets. Blood was collected twice a week using an 18-gauge needle and vacutainer tubes and sent to the laboratory for testosterone analysis. Semen and blood collection were repeated eight times each season. The scrotal size (circumference, length, and width) was measured using a flexible measuring tape. Data was subjected to the General Linear Model (GLM) in Minitab® 2017. Treatment means were separated using Fisher’s t-test and considered significantly different when the p-value was less than 0.05. Seasons and diet had an effect on progression, total motility, and testosterone levels. For instance, NC during the spring season had the lowest progressive motility (42.84 ± 5.32), followed by the summer (49.38 ± 4.49), winter (62.46 ± 4.35), and autumn (63.26 ± 3.58). Notably, when treatment diets were introduced, improvements were realized, and there were significant differences (p < 0.05) among the seasons following supplementation of FLAX, ASCA, and FLAX + ASCA, except for FLAX in the autumn season (53.83 ± 4.16). Total motility did not differ significantly (p > 0.05) between the seasons when the NC and PC diets were supplemented; nevertheless, there was an improvement when FLAX, ASCA, and FLAX + ASCA were supplemented. Testosterone levels were significantly influenced by the seasons when negative and PC diets were supplemented. It is noteworthy that supplementing FLAX + ASCA can reverse the influence of the season on the testosterone levels (spring, 27.52 ± 4.42; summer, 20.23 ± 5.11; autumn, 25.24 ± 3.96; and winter, 25.92 ± 4.42). In conclusion, seasons do affect semen quality and testosterone levels of South African indigenous rams. However, flaxseed oil and ascorbic acid can reverse the seasonal variations in semen quality and testosterone levels.
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Maside C, Recuero S, Salas-Huetos A, Ribas-Maynou J, Yeste M. Animal board invited review: An update on the methods for semen quality evaluation in swine - from farm to the lab. Animal 2023; 17:100720. [PMID: 36801527 DOI: 10.1016/j.animal.2023.100720] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 01/15/2023] [Accepted: 01/17/2023] [Indexed: 01/26/2023] Open
Abstract
Pig breeding is mainly conducted through artificial insemination with liquid-stored semen. It is, therefore, crucial to ensure that sperm quality is over the standard thresholds, as reduced sperm motility, morphology or plasma membrane integrity are associated with reduced farrowing rates and litter sizes. This work aims to summarise the methods utilised in farms and research laboratories to evaluate sperm quality in pigs. The conventional spermiogram consists in the assessment of sperm concentration, motility and morphology, which are the most estimated variables in farms. Yet, while the determination of these sperm parameters is enough for farms to prepare seminal doses, other tests, usually carried out in specialised laboratories, may be required when boar studs exhibit a decreased reproductive performance. These methods include the evaluation of functional sperm parameters, such as plasma membrane integrity and fluidity, intracellular levels of calcium and reactive oxygen species, mitochondrial activity, and acrosome integrity, using fluorescent probes and flow cytometry. Furthermore, sperm chromatin condensation and DNA integrity, despite not being routinely assessed, may also help determine the causes of reduced fertilising capacity. Sperm DNA integrity can be evaluated through direct (Comet, transferase deoxynucleotide nick end labelling (TUNEL) and its in situ nick variant) or indirect tests (Sperm Chromatin Structure Assay, Sperm Chromatin Dispersion Test), whereas chromatin condensation can be determined with Chromomycin A3. Considering the high degree of chromatin packaging in pig sperm, which only have protamine 1, growing evidence suggests that complete decondensation of that chromatin is needed before DNA fragmentation through TUNEL or Comet can be examined.
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Affiliation(s)
- Carolina Maside
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain; Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain
| | - Sandra Recuero
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain; Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain
| | - Albert Salas-Huetos
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain; Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain; Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02115, United States; Consorcio CIBER, M.P., Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), ES-28029 Madrid, Spain
| | - Jordi Ribas-Maynou
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain; Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain; Institute for Biogenesis Research, Department of Anatomy, Biochemistry and Physiology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI 96822, United States
| | - Marc Yeste
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain; Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain; Catalan Institution for Research and Advanced Studies (ICREA), ES-08010 Barcelona, Spain.
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11
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Assessment of sperm motility in livestock: Perspectives based on sperm swimming conditions in vivo. Anim Reprod Sci 2022; 246:106849. [PMID: 34556397 DOI: 10.1016/j.anireprosci.2021.106849] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 09/03/2021] [Accepted: 09/04/2021] [Indexed: 12/14/2022]
Abstract
Evaluation of sperm motility is well-established in farm animals for quickly selecting ejaculates for semen processing into insemination doses and for evaluating the quality of preserved semen. Likewise, sperm motility is a fundamental parameter used by spermatologists in basic and applied science. Motility is commonly assessed using computer-assisted semen analysis (CASA). Recent increases in computational power, as well as utilization of mobile CASA systems and open-source CASA programs, broaden the possibilities for motility evaluation. Despite this technological progress, the potential of computer-generated motility data to assess male fertility remains challenging and may be limited. Relevance for fertility assessment could be improved if measurement conditions would more closely mimic the in vivo situation. Hence, this review is focused on the current trends of automated semen assessment in livestock and explores perspectives for future use with respect to the physiological and physical conditions encountered by sperm in the female reproductive tract. Validation of current CASA systems with more complex, microfluidic-based devices mimicking the female reproductive tract environment could improve the value of sperm kinematic data for assessing the fertilizing capacity of semen samples, not only for application in livestock but also for use in conducting assisted reproduction techniques in other species.
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12
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Grossfeld R, Pable J, Jakop U, Simmet C, Schulze M. Comparison of NUCLEOCOUNTER, ANDROVISION with Leja chambers and the newly developed ANDROVISION eFlow for sperm concentration analysis in boars. Sci Rep 2022; 12:11943. [PMID: 35831488 PMCID: PMC9279483 DOI: 10.1038/s41598-022-16280-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 07/07/2022] [Indexed: 11/24/2022] Open
Abstract
Exact analysis of sperm concentration in raw and diluted semen is of major importance in swine artificial insemination, as sperm concentration is one of the most important characteristics of an ejaculate determining the value of the ejaculate and the productive life of the boar. The study compares different methods for sperm concentration analysis in raw and diluted boar semen: NUCLEOCOUNTER SP-100, the ANDROVISION with Leja chambers and the new ANDROVISION eFlow system. The Concordance Correlation Coefficient (CCC) between NUCLEOCOUNTER and ANDROVISION eFlow was 0.955 for raw (n = 185 ejaculates) and 0.94 for diluted semen (n = 109 ejaculates). The CCC between NUCLEOCOUNTER and ANDROVISION with Leja chambers was 0.66. A Bland-Altman plot of split-sample measurements of sperm concentration with NUCLEOCOUNTER and ANDROVISION eFlow showed that 95.1% of all measurements lay within ± 1.96 standard deviation. The coefficients of variance were 1.6 ± 1.3%, 3.6 ± 3.6% and 7.3 ± 6.3% for NUCLEOCOUNTER, ANDROVISION eFlow and ANDROVISION with Leja chambers in diluted semen, respectively. NUCLEOCOUNTER and ANDROVISION eFlow are comparable tools to measure the concentration of raw and diluted boar semen. In comparison to ANDROVISION with Leja chambers, concentration analyses of diluted semen using NUCLEOCOUNTER or ANDROVISION eFlow show a higher repeatability within and a higher concordance between the methods.
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Affiliation(s)
| | - Julia Pable
- Minitüb GmbH, Hauptstraße 41, 84184, Tiefenbach, Germany
| | - Ulrike Jakop
- Institute for Reproduction of Farm Animals Schönow, Bernauer Allee 10, 16321, Bernau, Germany
| | | | - Martin Schulze
- Institute for Reproduction of Farm Animals Schönow, Bernauer Allee 10, 16321, Bernau, Germany.
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13
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Zhao G, Zhao X, Song Y, Haire A, Dilixiati A, Liu Z, Zhao S, Aihemaiti A, Fu X, Wusiman A. Effect of L-citrulline Supplementation on Sperm Characteristics and Hormonal and Antioxidant Levels in Blood and Seminal Plasma of Rams. Reprod Domest Anim 2022; 57:722-733. [PMID: 35262979 DOI: 10.1111/rda.14111] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/28/2022] [Indexed: 11/30/2022]
Abstract
With the aim of providing a theoretical basis for the application of L-citrulline (L-Cit) in animal husbandry, the effects of L-Cit on reproductive hormone levels, antioxidant capacity, and semen quality of rams were studied by feeding them varying doses of L-Cit. A total of 32 rams were randomly divided into four groups with eight rams each. After all rams were trained to donate sperm normally, the control group was fed a basic diet, whereas the experimental groups I, II, and III were provided with feed supplemented with 4, 8, and 12 g/d of L-Cit, respectively.The experiment was conducted for 70 days, during which blood samples were collected from the jugular vein on days 0, 15, 30, 45, and 60, and semen samples were collected on days 0, 20, 40, and 60. In the same group, 100 µL of semen was used to test for quality, The rest of the semen sample and blood samples were centrifuged at 3500 rpm for 15 min, and the supernatant and serum, respectively, were used to determine the levels reproductive hormones and antioxidant indices. Ram semen samples were also collected on day 70 and used to study sperm plasma membrane, substitution, and mitochondrial membrane potential. Compared with the control group, the groups receiving L-Cit showed an increase in sperm concentration and number of linear motile sperm (P < 0.01); decrease in the number of dead sperm (P < 0.01); increase in sperm viability, particularly in groups II and III (P < 0.01); and increase in sperm mitochondrial membrane potential (P < 0.01). Moreover, groups I, II, and III showed significantly higher levels of serum gonadotropin-releasing hormone (GnRH), glutathione peroxidase (GSH-Px), and nitric oxide (NO) (P < 0.01). Luteinizing hormone (LH) and follicle-stimulating hormone (FSH) levels increased in groups I (P < 0.05), II (P < 0.05), and III (P < 0.01), whereas testosterone (T), catalase (CAT), and superoxide dismutase (SOD) levels increased in groups I and II (P < 0.01). Serum total antioxidant capacity (T-A) increased (P < 0.05), whereas both hydroxyl radical (·OH) and peroxy radical (O2·-) levels decreased (P < 0.01). Compared with the control, all groups had significantly higher SOD and GSH-Px in their seminal plasma (P < 0.01), and groups I, II (P < 0.05 for both), and III (P < 0.01) had higher levels of GnRH and FSH. LH, CAT, and NO levels increased in group I (P < 0.05), II, and III (P < 0.01 for both); malondialdehyde levels decreased in groups I, II (P < 0.05 for both), and group III (P < 0.01); and O2·- levels decreased in groups I, II, and III (P < 0.01). Under our experimental conditions, GnRH, FSH, LH, T, CAT, SOD, T-A, GSH-PX , and NO levels in the serum and seminal plasma of rams receiving L-Cit increased, whereas Estradiol(E2 ), O2· - and ·OH levels in the seminal plasma decreased; this improved the semen quality of rams supplemented with L-Cit. Moreover, supplementation with 12 g/d gave the best results.
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Affiliation(s)
- Guodong Zhao
- Laboratory of Animal genetic breeding & reproduction, Xinjiang Agricultural University, Xinjiang, Urumqi, 830052, China
| | - Xi Zhao
- Laboratory of Animal genetic breeding & reproduction, Xinjiang Agricultural University, Xinjiang, Urumqi, 830052, China
| | - Yukun Song
- Laboratory of Animal genetic breeding & reproduction, Xinjiang Agricultural University, Xinjiang, Urumqi, 830052, China
| | - Aerman Haire
- Laboratory of Animal genetic breeding & reproduction, Xinjiang Agricultural University, Xinjiang, Urumqi, 830052, China
| | - Airixiati Dilixiati
- Laboratory of Animal genetic breeding & reproduction, Xinjiang Agricultural University, Xinjiang, Urumqi, 830052, China
| | - Zhiqiang Liu
- Laboratory of Animal genetic breeding & reproduction, Xinjiang Agricultural University, Xinjiang, Urumqi, 830052, China
| | - Shangshang Zhao
- Laboratory of Animal genetic breeding & reproduction, Xinjiang Agricultural University, Xinjiang, Urumqi, 830052, China
| | - Aikebaier Aihemaiti
- Laboratory of Animal genetic breeding & reproduction, Xinjiang Agricultural University, Xinjiang, Urumqi, 830052, China
| | - Xiangwei Fu
- National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Abulizi Wusiman
- Laboratory of Animal genetic breeding & reproduction, Xinjiang Agricultural University, Xinjiang, Urumqi, 830052, China
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14
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Domain G, Banchi P, Ali Hassan H, Eilers A, Lannoo J, Wydooghe E, Niżański W, Van Soom A. Sperm Gone Smart: A Portable Device (iSperm ®) to Assess Semen Concentration and Motility in Dogs. Animals (Basel) 2022; 12:ani12050652. [PMID: 35268220 PMCID: PMC8909599 DOI: 10.3390/ani12050652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/25/2022] [Accepted: 03/01/2022] [Indexed: 11/23/2022] Open
Abstract
The iSperm® is a portable device for semen analysis. This study aimed to investigate its correlation with a conventional computer-assisted sperm analyzer (ISAS®v1) for the assessment of semen concentration and kinematic parameters in dogs (n = 224). The intra-assay variability of both devices and their ability to estimate semen concentration at a fixed value of 40 × 106/mL were also investigated. Results showed that the intra-assay variability was lower for the ISAS®v1 for all parameters compared to the iSperm®. Hence, iSperm® estimates were more variable in-between fields. Both the iSperm® and the ISAS®v1 were not reliable in estimating semen concentration (ISAS®v1: median 30 × 106/mL, interquartile range (IQR) 12, p < 0.01; iSperm®: median 35.12 × 106/mL, IQR 11.11, p < 0.01). Finally, positive correlations were found between both devices with stronger correlations obtained when four fields were analyzed by the iSperm®. However, the low number of spermatozoa analyzed per field and the inability to avoid artifacts are downsides that currently limit the reliability of the iSperm®. Therefore, the software of iSperm® needs some improvement to make it a valid and practical alternative to automated computerized systems for the analysis of canine semen.
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Affiliation(s)
- Guillaume Domain
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; (P.B.); (H.A.H.); (A.E.); (J.L.); (E.W.); (A.V.S.)
- Correspondence:
| | - Penelope Banchi
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; (P.B.); (H.A.H.); (A.E.); (J.L.); (E.W.); (A.V.S.)
- Department of Veterinary Sciences, University of Turin, Largo Paolo Braccini 2-5, 10095 Grugliasco, Italy
| | - Hiba Ali Hassan
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; (P.B.); (H.A.H.); (A.E.); (J.L.); (E.W.); (A.V.S.)
| | - Anouk Eilers
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; (P.B.); (H.A.H.); (A.E.); (J.L.); (E.W.); (A.V.S.)
| | - Joke Lannoo
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; (P.B.); (H.A.H.); (A.E.); (J.L.); (E.W.); (A.V.S.)
| | - Eline Wydooghe
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; (P.B.); (H.A.H.); (A.E.); (J.L.); (E.W.); (A.V.S.)
| | - Wojciech Niżański
- Department of Reproduction and Clinic of Farm Animals, University of Environmental Science, Grundwaldzki Square 49, 50-357 Wroclaw, Poland;
| | - Ann Van Soom
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; (P.B.); (H.A.H.); (A.E.); (J.L.); (E.W.); (A.V.S.)
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15
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Izanloo H, Soleimanzadeh A, Bucak MN, Imani M, Zhandi M. The effects of glutathione supplementation on post-thawed Turkey semen quality and oxidative stress parameters and fertilization, and hatching potential. Theriogenology 2021; 179:32-38. [PMID: 34823059 DOI: 10.1016/j.theriogenology.2021.11.010] [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: 05/11/2021] [Revised: 10/29/2021] [Accepted: 11/15/2021] [Indexed: 10/19/2022]
Abstract
This study was conducted to investigate the effect of semen extenders enriched with glutathione (GSH) on in vitro quality parameters and fertility of post-thawed turkey. In experiment 1, pools of semen diluted in glucose-based extender containing 0.5, 1, and 2 mM of GSH were cryopreserved. During the next step, a different variable such as motility and motion parameters, plasma membrane integrity (PMI) and functionality (PMF), DNA integrity, lipid peroxidation (MDA), total antioxidant capacity (TAC), catalase (CAT), glutathione peroxidase (GPx) and superoxide dismutase (SOD) activity were determined in the post-thawed samples. In the second experiment, artificial insemination was used to evaluate the fertility and hatchability performances of the post-thawed semen. The results of the first experiment showed that the extenders supplemented with 2, 1 and 0.5 mM of GSH had higher levels (p ≤ 0.05) of motility and motion parameters, PMI, PMF, TAC, CAT and SOD activity and lower abnormal morphology, DNA damage, and lipid peroxidation respectively in comparison to the control group (only extender with semen). Notably, the second experiment showed a higher rate of fertility (p ≤ 0.05) in 2 mM of GSH compared to the control group. It can be concluded that adding 2, 1 and 0.5 mM of glutathione leads to an improvement in the survival of the post-thawed turkey, while 2 mM of GSH can increase the fertility strength of the turkey sperm; hence it can be used to improve fertility and hatchability performance.
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Affiliation(s)
- H Izanloo
- Department of Theriogenology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - A Soleimanzadeh
- Department of Theriogenology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran.
| | - M N Bucak
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Selcuk University, Konya, Turkey
| | - M Imani
- Department of Basic Sciences, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - M Zhandi
- Department of Animal Science, Faculty of Agricultural Science and Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
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16
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Finelli R, Leisegang K, Tumallapalli S, Henkel R, Agarwal A. The validity and reliability of computer-aided semen analyzers in performing semen analysis: a systematic review. Transl Androl Urol 2021; 10:3069-3079. [PMID: 34430409 PMCID: PMC8350227 DOI: 10.21037/tau-21-276] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 05/27/2021] [Indexed: 12/05/2022] Open
Abstract
Background Computer-aided sperm analyzers (CASA) are currently used worldwide for semen analysis. However, there are doubts about their reliability to fully substitute the human operator. Therefore, this study aimed to systematically review the current literature comparing results from semen evaluation by both CASA-based and manual approaches. Methods A systematic screening of the literature was performed based on the PRISMA guidelines and by searching on PubMed, Scopus, and Embase databases. Results A total of 14 studies were included. Our results showed a high degree of correlation for sperm concentration and motility when analysis was performed either manually or by using a CASA system. However, CASA results showed increased variability in low (<15 million/mL) and high (>60 million/mL) concentration specimens, while sperm motility assessment was inaccurate in samples with higher concentration or in the presence of non-sperm cells and debris. Morphology results showed the highest level of difference, due to the high amount of heterogeneity seen between the shapes of the spermatozoa either in one sample or across multiple samples from the same subject. Conclusions Overall, our study suggests CASA systems as a valid alternative for the evaluation of semen parameters in clinical practice, especially for sperm concentration and motility. However, further technological improvements are required before these devices can one day completely replace the human operator. Artificial intelligence-based CASA devices promise to offer higher efficiency of the analysis and improve the reliability of results.
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Affiliation(s)
- Renata Finelli
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Kristian Leisegang
- School of Natural Medicine, Faculty of Community and Health Sciences, University of the Western Cape, Bellville, South Africa
| | | | - Ralf Henkel
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA.,Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK.,Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa.,LogixX Pharma, Theale, Berkshire, UK
| | - Ashok Agarwal
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
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17
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Schmidt JK, Mean KD, Dusek BM, Hinkle HM, Puntney RC, Alexander ES, Malicki KB, Sneed EL, Moy AW, Golos TG. Comparative computer-assisted sperm analysis in non-human primates. J Med Primatol 2021; 50:108-119. [PMID: 33469948 PMCID: PMC7969417 DOI: 10.1111/jmp.12510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/30/2020] [Accepted: 12/30/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Biomedical research has recently focused on developing new models of human disease by implementing genome-editing strategies in non-human primates (NHPs) to introduce relevant gene mutations. There is a need to establish objective semen evaluation methods to select sires for in vitro fertilization to perform germline editing in embryos. METHODS Sperm motility kinematic parameters were evaluated using a computer-assisted semen analysis (CASA) instrument for rhesus macaques (Macaca mulatta), cynomolgus macaques (Macaca fascicularis), and common marmosets (Callithrix jacchus). RESULTS Normative sperm kinematic parameters were established, revealing differences between marmosets and macaques. The impact of season on rhesus macaque sperm motility was modest, where changes in sperm motility related to season were dependent on the individual male. CONCLUSIONS These data provide a baseline of normative kinematic parameters for three captive NHP species, in which implementation of CASA may serve as a tool to evaluate NHP semen quality.
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Affiliation(s)
| | | | | | - Hayly M. Hinkle
- Wisconsin National Primate Research Center, Madison, WI, USA
| | | | | | | | - Emily L. Sneed
- Wisconsin National Primate Research Center, Madison, WI, USA
| | - Amy W. Moy
- Wisconsin National Primate Research Center, Madison, WI, USA
| | - Thaddeus G. Golos
- Wisconsin National Primate Research Center, Madison, WI, USA
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, USA
- Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison, WI, USA
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18
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Rivas Arzaluz C, Ayala ME, Aragón Martínez A. A new open-source hardware device to measure vertical sperm motility and concentration. Cytometry A 2021; 99:999-1006. [PMID: 33786998 DOI: 10.1002/cyto.a.24343] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 02/19/2021] [Accepted: 03/25/2021] [Indexed: 12/21/2022]
Abstract
Sperm motility and concentration are commonly evaluated parameters in semen analysis. Those parameters are assessed objectively with commercial instrumentation such as computer-assisted sperm analysis systems (CASA) and hemocytometer. In CASA systems, sperm motility is assessed in the horizontal plane imposed by the stage of the microscope. Thus, there is lack of measurement of the vertical velocity of sperm. The female reproductive tract is a tridimensional space which the sperm traverse to reach the ovum, and there is a need for instruments measuring parameters more relevant to this real-world situation. In this report we describe the design, construction and use of an open-source hardware (OSH) device for evaluation of the vertical velocity of sperm, called UPSPERM. This device was also used to measure sperm concentration, and agreement with hemocytometer was evaluated. Bland-Altman analysis shows good agreement between these two methods of sperm counting. As a first application of UPSPERM, we evaluated the changes in boar sperm motility at distinct pH values between 7.0 and 8.0. The UPSPERM results showed that the vertical velocity of sperm was highest at pH 7.6 and 7.8. We propose that our UPSPERM offers a reliable and affordable option for obtaining measurements of vertical velocity and sperm concentration.
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Affiliation(s)
- Cindy Rivas Arzaluz
- Laboratorio de Gametos y Desarrollo Tecnológico, Facultad de Estudios Superiores Iztacala, UNAM. Paseo de los Barrios Número 1, Tlalnepantla, Estado de México, Mexico.,Posgrado en Ciencias Biológicas, Unidad de Posgrado, Edificio A, Circuito de posgrados, 1er piso, Ciudad Universitaria, Ciudad de México, Mexico
| | - María E Ayala
- Unidad de Investigación en Biología de la Reproducción, Laboratorio de Pubertad, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México, Mexico
| | - Andrés Aragón Martínez
- Laboratorio de Gametos y Desarrollo Tecnológico, Facultad de Estudios Superiores Iztacala, UNAM. Paseo de los Barrios Número 1, Tlalnepantla, Estado de México, Mexico
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19
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Watts J. Measurement of membrane integrity in canine spermatozoa using a fluorescent computer-assisted spermatozoal quantification method and manual counting after eosin-nigrosin staining compared with manual counting after CFDA/PI staining. Reprod Domest Anim 2019; 54:1583-1595. [PMID: 31545547 DOI: 10.1111/rda.13567] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/22/2019] [Accepted: 09/17/2019] [Indexed: 11/28/2022]
Abstract
The aim of this study was to compare measurement of spermatozoal membrane status using computer-assisted spermatozoal quantification (CASQ) and eosin-nigrosin (EN) staining with manual counting after CFDA/PI staining. Analysis was performed on both fresh and thawed cryopreserved canine semen. Membrane-disrupted spermatozoa (MDS) were counted using CASQ (n = 311) in an untreated sample and a completely membrane-disrupted sample, and the percentage of membrane-intact spermatozoa (MIS) calculated: (Total count - Untreated sample count) ÷ Total count × 100. Spermatozoa were stained with a one-step EN stain (n = 501), and then, at least 100 spermatozoa were manually examined under ×1,000 magnification and classified as MDS (stained with eosin) or MIS (non-stained). Spermatozoa from the same samples were also stained with CFDA/PI, and then, at least 200 spermatozoa were manually examined under ×1,000 magnification and classified as MIS (completely stained by CFDA) or MDS. The percentage of progressively motile spermatozoa (PMS) was determined by both computer-assisted semen analysis (CASA) and subjective methodologies, and the data were subsequently analysed to measure the agreement between the CASQ and EN methods with the CFDA/PI technique using Bland-Altman methodology. Pearson's correlation was measured between the MIS and PMS percentage samples and correlation coefficients compared. The mean MIS percentage was lower for CASQ and higher for EN than in CFDA/PI for all comparisons. The agreement of MIS percentage between CASQ and CFDA/PI was -20.2% to 32.0%, and between EN and CFDA/PI was -32.9% to 14.9%. In all methods, the MIS and PMS percentages were correlated (p < .001). Measurement of CFDA/PI appeared to be the most reliable and accurate method of determining MIS percentage in dogs. Further investigation is required to determine whether the CASQ technique can be improved. Eosin-nigrosin staining also appeared to be unreliable at MIS <80% and overestimated the MIS percentage.
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Affiliation(s)
- John Watts
- Animal Reproduction Australia Pty Ltd, Werribee, Vic, Australia
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20
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Watts J. Development of a fluorescent computer-assisted spermatozoal quantification method and a comparison of results for manual counting with a haemocytometer and computer-assisted semen analysis in dogs. Reprod Domest Anim 2019; 54:1477-1488. [PMID: 31441976 DOI: 10.1111/rda.13553] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/14/2019] [Accepted: 08/18/2019] [Indexed: 11/28/2022]
Abstract
The aim of this study was to develop and validate a novel, computer-assisted spermatozoal quantification (CASQ) method of determining spermatozoal concentration in canine semen. In Experiment A, the spermatozoal concentration was measured (n = 28) with a haemocytometer using light microscopy, CASQ and computer-assisted semen analysis (CASA; MMC sperm), following three independent dilutions. The limits of agreement between the haemocytometer and CASQ were -13.1% to 13.8% and -27.0% to 28.6% between the haemocytometer and CASA. The precision CVs (limits of agreement) were 5.7% (-7.8% to 8.9%) for the haemocytometer, 6.2% (-8.8% to 12.3%) for CASQ and 10.8% (-16.0% to 19.5%) for CASA. In Experiment B, spermatozoa were manually counted (n = 42) with the haemocytometer under fluorescent illumination using the CASQ sample. The limits of agreement between the CASQ and the haemocytometer were satisfactory (-4.6% to 4.6%) and the precision CVs (limits of agreement) were 6.2% (-9.0% to 11.4%) for the haemocytometer and 4.4% (-5.8% to 8.6%) for CASQ. The CASQ method was then clinically applied to compare the haemocytometer (light and fluorescent methods) with CASQ and CASA. Outlying data were removed. These studies demonstrated that CASQ was reliable and that the MMC sperm CASA was unreliable as methods for determining spermatozoal concentration in canine semen. Computer-assisted spermatozoal quantification was also determined to be more precise than manual counting with the haemocytometer. Using the clinical protocol, the agreement between the haemocytometer and CASQ method was acceptable, but it was worse than in the experiments where duplicate samples and a larger volume of semen were analysed. The CASQ method may be a useful method to measure the membrane status of canine spermatozoa; however, further investigation is required. Counting spermatozoa using fluorescent microscopy and the haemocytometer may improve the efficiency of counting and the accuracy of the method.
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Affiliation(s)
- John Watts
- Animal Reproduction Australia Pty Ltd, Werribee, Vic., Australia
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21
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Schubert B, Badiou M, Force A. Computer‐aided sperm analysis, the new key player in routine sperm assessment. Andrologia 2019; 51:e13417. [DOI: 10.1111/and.13417] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 05/17/2019] [Accepted: 06/03/2019] [Indexed: 01/18/2023] Open
Affiliation(s)
- Benoit Schubert
- Eurofins Biomnis – Institut Rhonalpin IVF Center Clinique du Val d'Ouest – Medicentre Ecully France
| | - Mélanie Badiou
- Eurofins Biomnis – Institut Rhonalpin IVF Center Clinique du Val d'Ouest – Medicentre Ecully France
| | - André Force
- Eurofins Biomnis – Institut Rhonalpin IVF Center Clinique du Val d'Ouest – Medicentre Ecully France
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22
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Moraes CR, Runcan EE, Blawut B, Coutinho da Silva MA. Technical Note: The use of iSperm technology for on-farm measurement of equine sperm motility and concentration. Transl Anim Sci 2019; 3:1513-1520. [PMID: 32704914 PMCID: PMC7200496 DOI: 10.1093/tas/txz115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 07/29/2019] [Indexed: 01/20/2023] Open
Abstract
The iSperm is a newly released semen analysis tool from Aidmics Biotechnology Co. LTD, which allows an iPad Mini to be transformed into a handheld microscope with objective semen analysis software for equine available through the Apple Store (version 4.5.2). The aim of this study was to compare iSperm values for sperm motility and sperm concentration to current acceptable methods for semen analysis and to determine the agreement with these methods using statistical methods. Two ejaculates from each of five Standardbred stallions were used to compare sperm motility (computer-assisted semen analysis [CASA] vs. iSperm) and concentration (NucleoCounter SP-100 [NC] vs. hemocytometer vs. iSperm). Data were analyzed by first testing for the differences between the means of each method using a linear mixed-effects model. The agreement between the two continuous measurements for each method was then investigated by computing Lin's concordance correlation coefficient (CCC), with a value of 1 indicating perfect agreement between methods. Results are reported as the CCC with the associated 95% confidence interval in parentheses. Means for both total motility (TM) and progressive motility (PM) were equal between CASA and iSperm values (P = 0.0741 and P = 0.725, respectively). However, means for all velocity measurements were significantly different between CASA and iSperm readings (P < 0.001). For concentration, means were equal between NC and iSperm values (P = 0.748) and for hemocytometer and iSperm values (P = 0.953). The CCC for TM was 0.871 (0.788, 0.923) and for PM was 0.916 (0.847, 0.955) indicating good agreement between methods. Low levels of agreement were observed for all velocity measurements. Finally, the CCC for concentration compared by iSperm and NC was 0.970 (0.949, 0.982) and for iSperm and hemocytometer it was 0.962 (0.934, 0.978), both close to the line of perfect concordance. Although more work is needed to improve the iSperm software for velocity measurements to be acceptable by research standards, in its present form the iSperm will introduce a low-cost and affordable method for on-farm semen analysis (TM, PM, concentration) for breeders and veterinarians. As a result, more farms will have access to accurate sperm analysis tools which will help to standardize semen processing procedures leading to better overall quality of semen used for artificial insemination.
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Affiliation(s)
- Christa R Moraes
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH
| | - Erin E Runcan
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH
| | - Bryan Blawut
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH
| | - Marco A Coutinho da Silva
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH
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23
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Abstract
In the quest for predicting fertility of an individual, enhancing semen handling, dilution and storage protocols, and understanding the impact of environment and, andrologists have changed their approaches to semen analysis. The technologies used today are fast developing and readily implemented in research. Semen is one of a few naturally occurring monocellular suspensions, so sperm function analysis by flow cytometry (FC) and utilization of fluorochromes is an ideal technique for high throughput, objective and accurate analysis. The complementary use of microscopical assessments by Computer-Assisted Semen Analysis (CASA), where sperm cell parameters can be objectively assessed is equally important. The objectivity and repeatability of these techniques have driven research on the function, identification of heterogeneity and fertility of the ejaculate. The wealth of knowledge obtained from the application of these powerful methods has changed our view of the spermatozoon. Although there is some application of these methods in the industry producing boar semen for artificial insemination (AI) and to eliminate sires of sub-standard semen quality, uptake of advanced methods is still slow. Instruments are becoming cheaper and technically more user friendly. Standardization of methodology and optimization of instrument settings is important for full implementation of these systems, including comparison between labs. This review provides an update on two technologies: flow cytometry and CASA for objective analysis of boar semen quality.
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Affiliation(s)
| | - Nana Satake
- School of Veterinary Science, The University of Queensland, Gatton 4343, Australia
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24
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Luther AM, Waberski D. In vitro aging of boar spermatozoa: role of sperm proximity and seminal plasma. Andrology 2019; 7:382-390. [PMID: 30793513 DOI: 10.1111/andr.12600] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 01/08/2019] [Accepted: 01/28/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND Knowledge on the effect of seminal plasma on sperm function in extended semen during in vitro storage is lacking. OBJECTIVES The aim was to examine the interactive role of sperm concentration and seminal plasma concentration on boar sperm function during in vitro aging. MATERIAL AND METHODS Experiment 1: Twenty-one boar ejaculates were aliquoted with Beltsville Thawing Solution into five semen doses containing between 32.5 and 8.5 × 106 sperm/mL. Experiment 2: Semen samples (n = 8) containing 18 × 106 or 10 × 106 sperm/mL with their natural amount of seminal plasma and 10 × 106 sperm/mL substituted with autologous seminal plasma to the same concentration as in doses with 18 × 106 sperm/mL were prepared. Experiment 3: Four variants of semen doses containing 18 × 106 or 10 × 106 sperm/mL with either 10% or 0.5% (v/v) seminal plasma were used. Lipid peroxidation was assessed using Bodipy 581/591 in samples (n = 8) with two different sperm concentrations. Semen was examined during 144-h storage at 17 °C by computer-assisted semen analysis and flow cytometry. RESULTS Experiment 1: 3D kinematic patterns revealed a concentration- and time-dependent loss of sperm kinematics in samples with < 23 × 106 sperm/mL (p < 0.05). Percent viable spermatozoa with high mitochondria membrane potential were lower (p < 0.05) in samples with < 15 × 106 sperm/mL. Experiment 2: Seminal plasma supplementation in samples with 10 × 106 sperm/mL did not restore the loss of sperm kinematics (p > 0.05). Experiment 3: At 144 h, motility was lowest in samples containing 10 × 106 sperm/mL and 10% (v/v) seminal plasma (p < 0.05). Sperm lipid peroxidation did not differ between samples with different sperm concentration. CONCLUSION Long-term exposure to seminal plasma has a negative impact on in vitro-aged boar spermatozoa. Reduced sperm-to-sperm proximity but not the reduction of seminal plasma limits sperm function in long-term stored boar semen.
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Affiliation(s)
- A-M Luther
- Unit for Reproductive Medicine of Clinics/Clinic for Pigs and Small Ruminants, University of Veterinary Medicine Hannover, Hannover, Germany
| | - D Waberski
- Unit for Reproductive Medicine of Clinics/Clinic for Pigs and Small Ruminants, University of Veterinary Medicine Hannover, Hannover, Germany
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25
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Larentis GR, Camozzato GC, Bastos HB, Gregory RM, Mattos RC. Equine Sperm Selection by Synthetic Membrane Filter. J Equine Vet Sci 2018. [DOI: 10.1016/j.jevs.2018.01.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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