Erratum to: 56 SINGLE LAYER CENTRIFUGATION THROUGH PURESPERM® 80 IMPROVES QUALITY OF CRYOPRESERVED DOG SPERMATOZOA

2013 ◽  
Vol 25 (1) ◽  
pp. 175
Author(s):  
L. Alcaráz ◽  
M. Hidalgo ◽  
M. J. Galvez ◽  
D. Acha ◽  
I. Ortiz ◽  
...  

Density gradient centrifugation with PureSperm® (PureSperm® 40 + PureSperm® 80; Nidacon International, Mölndal, Sweden) has been satisfactorily used to enhance the quality of dog semen samples; however, no studies have been performed on the effect of single layer centrifugation (SLC) with PureSperm® on frozen–thawed dog semen. The aim of this study was to investigate if SLC with PureSperm® 80 can improve the post-thaw semen quality of dog. Semen from 5 dogs was collected by digital manipulation. Two ejaculates from each dog were centrifuged with Tris-based extender, supernatant was removed, and sperm pellet was suspended to a final concentration of 300–400 × 106 sperm mL–1 with CaniPROTM Freeze A plus 20% egg yolk at 22°C. Extended semen was cooled to 5°C within an hour and then diluted to a final concentration of 150–200 × 106 sperm mL–1 in CaniPROTM Freeze B plus 20% egg yolk at 5°C, loaded in 0.5-mL plastic straws and frozen horizontally in ranks placed 4 cm above the surface of liquid nitrogen vapors for 10 min, after which they were directly placed in liquid nitrogen. After 24 to 48 h of storage, straws were thawed in a water bath at 37°C for 30 s. After thawing, semen samples were divided in 2 aliquots: one of them was used as control and the other one was processed by SLC PureSperm® 80. Assessment of sperm motility (assessed by computerized-assisted semen analysis), morphology (Diff-Quick staining), and viability [triple fluorescent stain of propidium iodine/isothiocyanate-labeled peanut (Arachis hypogaea) agglutinin/Rhodamine 123] were evaluated in control and treated semen samples. Data were studied by ANOVA. Results are expressed as mean ± SEM. Significant (P < 0.001) differences were found between SLC-treated and control semen for sperm motility (percentage of total motile spermatozoa: 93.65 ± 0.05 v. 83.79 ± 0.13; percentage of progressive motile spermatozoa: 79.38 ± 6.66 v. 54.61 ± 16.11), morphology (86.45 ± 0.01 v. 83.51 ± 0.01), and viability (percentage of viable sperm with an intact acrosome: 58.32 ± 0.04 v. 36.50 ± 0.17; percentage of viable sperm with an acrosome reaction: 2.81 ± 0.01 v. 9.74 ± 0.21). Based on our results, we can conclude that SLC with PureSperm® 80 is an alternative and successful method for improving the quality of frozen–thawed dog spermatozoa, selecting good-quality spermatozoa (motile, morphologically normal, viable, and acrosome intact spermatozoa) from the rest of the semen sample.

2013 ◽  
Vol 25 (3) ◽  
pp. 587
Author(s):  
L. Alcaráz ◽  
M. Hidalgo ◽  
M. J. Galvez ◽  
D. Acha ◽  
I. Ortiz ◽  
...  

Density gradient centrifugation with PureSperm® (PureSperm® 40+PureSperm® 80; Nidacon International, Mölndal, Sweden) has been satisfactorily used to enhance the quality of dog semen samples; however, no studies have been performed on the effect of single layer centrifugation (SLC) with PureSperm® on frozen–thawed dog semen. The aim of this study was to investigate if SLC with PureSperm® 80 can improve the post-thaw semen quality of dog. Semen from 5 dogs was collected by digital manipulation. Two ejaculates from each dog were centrifuged with Tris-based extender, supernatant was removed, and sperm pellet was suspended to a final concentration of 300–400×106spermmL–1 with CaniPROTM Freeze A plus 20% egg yolk at 22°C. Extended semen was cooled to 5°C within an hour and then diluted to a final concentration of 150–200×106spermmL–1 in CaniPROTM Freeze B plus 20% egg yolk at 5°C, loaded in 0.5-mL plastic straws and frozen horizontally in ranks placed 4cm above the surface of liquid nitrogen vapors for 10min, after which they were directly placed in liquid nitrogen. After 24 to 48h of storage, straws were thawed in a water bath at 37°C for 30s. After thawing, semen samples were divided in 2 aliquots: one of them was used as control and the other one was processed by SLC PureSperm® 80. Assessment of sperm motility (assessed by computerized-assisted semen analysis), morphology (Diff-Quick staining), and viability [triple fluorescent stain of propidium iodine/isothiocyanate-labeled peanut (Arachis hypogaea) agglutinin/Rhodamine 123] were evaluated in control and treated semen samples. Data were studied by ANOVA. Results are expressed as mean ± SEM. Significant (P&lt;0.001) differences were found between SLC-treated and control semen for sperm motility (percentage of total motile spermatozoa: 93.65±0.05 v. 83.79±0.13; percentage of progressive motile spermatozoa: 79.38±6.66 v. 54.61±16.11), morphology (86.45±0.01 v. 83.51±0.01), and viability (percentage of viable sperm with an intact acrosome: 58.32±0.04 v. 36.50±0.17; percentage of viable sperm with an acrosome reaction: 2.81±0.01 v. 9.74±0.21). Based on our results, we can conclude that SLC with PureSperm® 80 is an alternative and successful method for improving the quality of frozen–thawed dog spermatozoa, selecting good-quality spermatozoa (motile, morphologically normal, viable, and acrosome intact spermatozoa) from the rest of the semen sample.


2020 ◽  
Vol 7 ◽  
Author(s):  
Mariana Lucía Bertuzzi ◽  
Edita Yola Torres ◽  
Teodosio Huanca ◽  
Deborah Neild ◽  
María Ignacia Carretero

The use of non-commercial and commercial extenders for cooling alpaca sperm has already been reported, the latter showing certain advantages over the first. The Andromed® (AM) extender was created for use in ruminants and has also been tested in ejaculated and epididymal alpaca sperm. According to the manufacturer, this extender does not need the addition of egg yolk (EY); however, it is known that the addition of EY to some extenders improves the preservation of cooled sperm. The objective of this study therefore was to compare a non-commercial extender (Tris) with the addition of EY vs. the commercial extender AM with and without the addition of EY, for cooling alpaca sperm obtained from diverted deferent ducts. Fifteen pools of deferent duct sperm were formed using samples from two or three different males for each. Each sperm pool was evaluated and then divided into three aliquots that were diluted to a final concentration of 30 × 106 sperm ml-1 (0 h) with either: (1) Tris with 20% EY (T-EY), (2) AM, or (3) AM with 20% EY (AM-EY). Samples were cooled to 5°C and the following sperm parameters were evaluated after 24 and 48 h of storage: motility, viability, membrane function, acrosome integrity, morphology, and chromatin condensation. Motility was also evaluated after 72 h of storage. The samples that best preserved progressive and total sperm motility at the 24 and 48 h evaluation periods were the ones diluted with AM-EY, observing that with this extender these motility patterns decreased significantly after 72 h of storage compared to time 0 h (p &lt; 0.05). A significant decrease (p &lt; 0.05) in total and progressive motility was observed at 48 h for the T-EY and AM extender compared to 0 h. AM was the only extender in which the percentages of viable sperm decreased significantly (p &lt; 0.05) after 48 h of conservation. For the rest of sperm parameters evaluated, no significant differences were observed between any of the extenders at any evaluation time. The Andromed® extender with the addition of 20% EY could be an alternative option for cooling alpaca sperm obtained from deferent ducts.


Animals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 653
Author(s):  
Maja Zakošek Pipan ◽  
Margret L. Casal ◽  
Nataša Šterbenc ◽  
Irma Virant Klun ◽  
Janko Mrkun

A challenge in freezing semen for short and long-term availability is avoiding damage to intact spermatozoa caused by the freezing process. Vitrification protocols provide better results through less manipulation of semen and shorter freezing time compared to slow freezing techniques. Our research was aimed at improving vitrification methods for canine semen. Semen quality was determined in 20 ejaculates after collection. Each ejaculate was divided into eight aliquots, each with a different extender. The control extender contained TRIS, citric acid, fructose, and antibiotics. Soy lecithin and sucrose were added to the control extender at different concentrations to make up the test extenders and final concentration of 50 × 106 spermatozoa/mL. From each group, a 33 µL (1.65 × 106 spermatozoa) suspension of spermatozoa was dropped directly into liquid nitrogen and devitrified at least one week later and evaluated as before. Soy lecithin at 1% and 0.25 M sucrose added to the base vitrification media effectively preserved all sperm qualities. Our results demonstrate the effectiveness of our methods. Vitrification media containing sucrose and soy lecithin cause a minimal decline in quality of canine semen after devitrification. Furthermore, extenders used in our research did not contain egg yolk, which was replaced by soy lecithin, thus allowing for ease of shipping to other countries with strict requirements.


2012 ◽  
Vol 82 (6) ◽  
pp. 391-398 ◽  
Author(s):  
Barbara Wirleitner ◽  
Pierre Vanderzwalmen ◽  
Astrid Stecher ◽  
Dietmar Spitzer ◽  
Maximilian Schuff ◽  
...  

Background: This study aimed to investigate the influence of an oral antioxidative supplementation on sperm quality of in vitro fertilization (IVF) patients, as analyzed by sperm motility according to the WHO criteria and motile sperm organelle morphology examination (MSOME). Methods: Semen samples were collected from 147 patients before undergoing an IVF/intracytoplasmic morphologically-selected sperm injection (IMSI) cycle and 2 - 12 months after an antioxidative supplementation. Semen analysis was evaluated according to WHO and MSOME criteria. Spermatozoa were grouped according to the size of nuclear vacuoles within the sperm’s heads. Patients were divided into oligoasthenoteratozoospermic (OAT) and non-OAT men. Between first and second semen analysis, patients were supplemented orally with an antioxidative preparation. Results: After the antioxidative therapy we observed a significant reduction in the percentage of immotile sperm cells in the patients. Additionally, the percentage of class I spermatozoa according to MSOME criteria was significantly higher after antioxidative supplementation. In OAT patients the percentage of class I sperm was found to be increased, although not significantly. However, we observed a drastic improvement in sperm motility as well as in total sperm count in this group. Conclusion: The results demonstrated a considerable improvement in semen quality, notably in OAT patients. Considering the putative relationship between semen quality on the one hand and reactive oxygen species on the other, the observed changes in the sperm parameters indicate that a decline in semen quality, and even subtle morphological changes, might be associated with oxidative stress. Our findings suggest that an antioxidative and micronutrient supplementation has a remarkable benefit for IVF patients having restricted sperm parameters, in particular.


2019 ◽  
Vol 69 (4) ◽  
pp. 1291
Author(s):  
A. Murtaza ◽  
M. Ahmad ◽  
M. Zubair ◽  
S. Umar ◽  
A. Mushtaq ◽  
...  

The present study aimed to investigate effects of superoxide dismutase (SOD) and reduced glutathione (GSH) on the quality of frozen-thawed semen of Sahiwal bulls. Semen was collected twice a week for 8 weeks by artificial vagina from six Sahiwal bulls, kept at the Semen Production Unit Qadirabad, Sahiwal-Pakistan. After gross and microscopic evaluation, qualifying semen ejaculates were divided into 10 equal aliquots and diluted in extenders enriched with no antioxidants (control); or supplemented with either SOD (50, 100 and 200 IU/mL), or GSH (0.5, 1 and 2 mM) or their combinations (50 IU/mL SOD and 0.5 mM GSH, 100 IU/mL SOD and 1 mM GSH and 200 IU/mL SOD and 2 mM GSH). Samples were then frozen and stored in liquid nitrogen at -196°C for 24 h. The following parameters were evaluated for semen quality: post-thawed sperm motility, viability, acrosome and membrane integrity. According to the results, sperm motility, viability, acrosome and membrane integrity were significantly (P<0.05) higher in samples treated either with 100 IU/mL of SOD; 1 mM and 2 mM of GSH or 50 IU/mL of SOD plus 0.5 mM of GSH. In conclusion, semen quality might be improved by supplementing semen extenders with 100 IU/mL of SOD; 0.5 and 1 mM of GSH and combination of 50 IU/mL and 0.5 mM of SOD and GSH, respectively.


2021 ◽  
Vol 44 (2) ◽  
pp. 146-151
Author(s):  
Nurcholis Nurcholis ◽  
A. Furqon ◽  
R. I. Arifiantini ◽  
S. M. Salamony

Antioxidants such as tocopherol, ß-carotene, and polyunsaturated fatty acids (PUFA) from red fruit oil of Papua may be used to protect frozen semen. The study is aimed to test the effect of red fruit oil supplementation on motility, viability, and recovery rate of frozen sperm of Ongole-grade bulls. Semen was collected twice a month from eight 4-5-year-old male Ongole grade using an artificial vagina, followed by macro- and microscopical evaluations. Collected semen was divided into four tubes and diluted with tris egg yolk diluents (TEY) as a control, TEY supplemented with 0.5% red fruit oil (RFO) (TEY RFO0.5), TEY supplemented with 1% RFO (TEY RFO1.0), and TEY supplemented with 1.5% RFO (TEY RFO1.5). The diluted semen was then packed into the straw and equilibrated for 2, 4, and 6 h prior to frozen on liquid nitrogen vapor for 10 minutes. The observed variables in this study were sperm motility, sperm viability, and morphology after equilibration, after thawing, and recovery rate. The experimental design is a completely randomized factorial design. The data were analyzed using ANOVA and were further tested using Duncan multiple range test. The results showed that the sperm motility of fresh semen was 81.10±1.42%. The percentage of sperm motility in TEY RFO1.5 treatment at 6 h equilibration was 60.00±1.06%, significantly higher compared to TEY RFO1.0 and TEY RFO0.5. The percentage of post-thawing sperm motility in TEY RFO1.5 treatment was 62.40±1.09%. The best post-thawing sperm viability in TEY RFO1.5 was 80.70±1.20%, significantly increase from the treatment of TEY RFO1.0 and TEY RFO0.5. The recovery rate (RR) for TEY RFO1.5 treatment had the best percentage at 76.94%. In conclusion, RFO supplementation in semen diluents for 2 h of equilibration resulted in the best motility and viability at 0 h of post thawing observation.


2013 ◽  
Vol 11 (3) ◽  
Author(s):  
Herdis Herdis ◽  
Ida Kusuma ◽  
I wayan Angga D

The study was conducted to know the influence of a- tocoferrol additional into the egg yolk tris extender medium to the liquid semen quality of “Garut” lamb (Ovis aries). Parameter which had been evaluated i.e. percentages of progressive motile sperm, percentages of viable sperm and percentages of plasma membrane. On the 4 th day evaluation showed that the addition of a- tocoferrol with the dose 0,04 g/100 ml into the egg yolk tris extender produced the highest percentages ofprogressive motile sperm, percentages of viable sperm and percentages of plasma membrane ( 49,0 ± 6,5%; 68,6 ± 4,2% and 59,3 ± 6,5% ) but there were not significantly different from control ( 45,5 ± 5%; 66,0 ± 4,6% and 56,2 ± 5,7% )and the addition of a- tocoferrol with the dose 0,02 g/100 ml ( 49,0 ± 6,5%; 66,6 ± 4,0% and 59,3 ± 2,8% ) respectively. In conclusion, the addition of a-tocoferrol in the egg yolk tris extender medium no significant effect on the liquid semen quality.


2020 ◽  
Vol 17 (4) ◽  
pp. 62-69
Author(s):  
S.A. Ubah ◽  
M. Sule ◽  
I.C. Chibuogwu ◽  
P.K. Columbus ◽  
K.O. Abah ◽  
...  

The aim of this work was to substitute chicken egg yolk with quail egg yolk in two semen extenders and to evaluate the quality of the extended canine semen following chilled storage. Semen was pooled from male dogs (n= 4) of about 18-months old and body weight of about 28 kg. Four extenders were tested: (1) tris buffered chicken egg yolk extender (2) tris buffered quail egg yolk extender, (3) skimmed milk chicken egg yolk extender and (4) skimmed milk quail egg yolk extender. Semen was diluted with corresponding extender in the ratio 1:4. The diluted semen samples were analyzed for motility, mass activity, viability, abnormalities percentage and pH for three consecutive days. There was no significant difference (P>0.05) between chicken egg yolk and quail egg yolk in either tris diluent or skimmed milk extender with respect to pH, mass activity and sperm motility. Samples stored in both the tris and skimmed milk-based extenders with quail egg yolk displayed greater viability than those in chicken egg yolk but the difference was not significant (P>0.05). Viability, mass activity and sperm motility decreased as treatment days increased in both chicken and quail egg yolk extenders. Results showed that a pH of 6.5 was maintained from day 0 to day 3. There was no difference in semen quality between chicken and quail egg yolk in either the tris diluent or skimmed milk extender (P> 0.05). It was recommended that quail egg yolk could be substituted for chicken egg yolk in the two canine semen extenders. Further modifications of the diluents with quail egg yolk might produce an improved result. Keywords: Canine, Chicken Chilled, Egg yolk, Extenders, Quail, Semen


Author(s):  
Nancy Diana Frederika Katerina Foeh ◽  
Raden Iis Arifiantini ◽  
Tuty Laswardi Yusuf

This research was aimed to study the effect of administration of glycerol and dimetilacetamida (DMA) in BTS® and MIII®extender supplemented with sodium dodecyl sulphate (SDS) on boar frozen semen. A number of four boars were used in this study for semen collection (n=20). The collected semen was evaluated both macroscopically and microscopically. In this study, only the semen that demonstrated>70% sperm motility, >200.106/mL sperm concentration, and<20% sperm abnormalities were used and divided into eight tubes. A number of 4 tubes were diluted with 5 mL of BTS, and the rest with 5 mL MIII. The sampel was stored at 20-22° C for 2 hours, followed by centrifugation for 15 minutes (at 2000 rpm), and taken of pellet with 1 ml supernatant. The pellet that was resulted from centrifugation using BTS, then re-diluted with BTS-glycerol 5% (BTSG), BTS DMA 5% (BTSD), BTS-glycerol 5% and SDS (BTSG-S), BTS-DMA 5% and SDS (BTSD-S). Four other pellets that were centrifuged with MIII also re-diluted with MIII-glycerol 5% (MIIIG), MIII-DMA 5% (MIIID), MIII-glycerol 5% and SDS (MIIIG-S), MIII-DMA 5% and SDS (MIIID-S). Next, all of diluted semen were inserted into 0.5 mL straw and equilibrated for 2 hours (4° C), then frozen and stored in liquid nitrogen. The evaluation of frozen semen quality was conducted at 24 hours after frozen. The result of this study showed that post-thawing motility of spermatozoa in BTSD-S (40.17±0.2%) was found higher (P<0.05) compared to seven other dilution processes. Therefore, it is concluded that the concentration of 5% DMA that supplemented with SDS in BTS dilution much better for maintaining boars frozen semen quality.


2021 ◽  
Vol 49 ◽  
Author(s):  
Bruna Farias Brito ◽  
Bárbara Mara Bandeira Santos ◽  
Leonardo Alves Rodrigues Cabral ◽  
Luiz Carlos Pinheiro Maia ◽  
Natanael Aguiar Braga Negreiros ◽  
...  

Background: Sperm sexing aims to separate sperm populations in carriers of the “X” or “Y” chromosome. Currently, flow cytometry is a technique that allows greater accuracy; however, it causes structural changes in sperm, reduces viability, and has a high cost. As a result, other methods have been researched, including immunosexing, which uses monoclonal antibodies to detect sex-specific surface antigens. Thus, the objective of this study was to evaluate the immunosexing technique using a monoclonal antibody against sex-specific protein (HY) in the conservation of ram and goat semen in ACP101/102c.Materials, Methods & Results: Ejaculates from 5 rams and 5 goats were collected with the aid of an artificial vagina; they were evaluated and submitted to the immunosexing protocol, according to the manufacturer's recommendations, using the Monoclonal Antibody Kit specific for mammalian sperm with “Y” chromosomes (HY; HY Biotechnology, Rio de Janeiro, RJ, Brazil). After sexing, the supernatant was resuspended in the cryopreservation diluent: ACP ram (ACP101/102c + 20% egg yolk + 7% glycerol) and ACP goat (ACP101/102c + 2.5% egg yolk + 7% glycerol), packaged in 0.25 mL straws, refrigerated at 4°C, stabilized for 30 min, frozen in liquid nitrogen vapor (-60°C) for 15 min, immersed in liquid nitrogen, and stored in cryogenic cylinders. The samples were evaluated in natura (T1), after immunosexing (T2) and after thawing (T3) for sperm motility subjectively using conventional microscopy (40x). Plasma membrane integrity (IMP) and sperm cell morphology were evaluated by the smear staining technique using eosin-nigrosine dye, and the percentages of healthy and morphologically defect spermatozoa were determined. In the evaluation of ram semen regarding sperm motility and IMP, no statistically significant differences were observed between treatments after sexing in the evaluation of absolute data (P > 0.05), with the difference being observed only between T1 and T2, and T3 (P < 0.05). Regarding the relative percentage and sperm morphology, no statistically significant differences were observed (P > 0.05). Regarding the evaluation of goat semen samples, the motility parameters were consistent with the technique submitted; however, the IMP data did not appear as expected, requiring further evaluation for a better assessment of the technique for this species.Discussion: The data obtained from ram semen submitted to the immunosexing protocol, regarding the absolute evaluation of motility and IMP, demonstrated that the non-sexed semen (T1) was superior to the sexed treatments (T2 and T3); however, it is noteworthy that freezing started with approximately 50% of the cells, since the immunosexing technique results in a loss of viability of approximately 50% of the sperm, which corresponds to the ratio of sperm carrying the X chromosome. In addition, when the data in this study were transformed into relative values, no statistical differences were observed, indicating that the immunosexing protocol, as well as the freezing protocol, did not significantly affect the quality of ram sperm cells. In relation to the immunosexing of goat semen, future studies should be conducted in vitro to define a more appropriate protocol for the species and, in addition, in vivo studies should be performed to prove the quality of the technique. It was concluded that the immunosexing process using a monoclonal antibody against sex-specific protein (HY) associated with the use of powdered coconut water diluent (ACP101/102c) in the cryopreservation of semen proved to be efficient in the in vitro evaluation of ovine species.


Sign in / Sign up

Export Citation Format

Share Document