Supplementation of Estradiol Into Semen Extender Improved Goat Sperm Cryopreservation

2021 ◽  
Author(s):  
Mohsen Mesbah ◽  
Mohsen Forouzanfar ◽  
Shahin Eghbalsaied
Keyword(s):  
Sperm Cryopreservation ◽  
Semen Extender

Glutathione Supplemented Soybean Lecithin Based Semen Extender Is Not Suitable for Buck Sperm Cryopreservation.

2012 ◽  
Vol 87 (Suppl_1) ◽  
pp. 420-420
Author(s):  
Hossein Salmani ◽  
Mahdi Zhandi ◽  
Malek Shakeri ◽  
Armin Towhidi ◽  
Ahmad Zare Shahneh ◽  
...  
Keyword(s):  
Soybean Lecithin ◽  
Sperm Cryopreservation ◽  
Semen Extender

109 Sperm cryopreservation in Eulamprus quoyii (Eastern water skink)

2019 ◽  
Vol 31 (1) ◽  
pp. 180
Author(s):  
R. Hobbs ◽  
L. Keogh ◽  
K. James ◽  
J. Baxter-Gilbert ◽  
M. Whiting
Keyword(s):  
Dimethyl Sulfoxide ◽  
Membrane Integrity ◽  
Adult Males ◽  
Sperm Cryopreservation ◽  
Treatment Groups ◽  
Dimethyl Acetamide ◽  
Rich Diversity ◽  
Sperm Volume ◽  
Semen Extender ◽  
Pooled Samples

Australia has a rich diversity and high endemism (93%) of reptilian species, the largest family being Scincidae (252 species), yet there continues to be a paucity of reports for gamete cryopreservation in reptilians (Clulow and Clulow 2016 Reprod. Fertil. Dev. 28, 1116-1132, DOI: 10.1071/RD15466). The goal of this study was to collect sperm from a locally abundant skink species (Eulamprus quoyii; Eastern water skink) to examine sperm sensitivity to cryopreservation. Wild-caught males (n=50; snout-vent length=103-126mm) were held in seminatural conditions for the duration of the study. Semen was collected during the breeding season (September-October) using an adapted ventral-massage technique (Molinia et al. 2010 Herp. Cons. Biol. 5, 311-319; retrieved from http://www.herpconbio.org). Sperm metrics (volume, concentration, progressive and total motility, and membrane integrity) were assessed subjectively under light or fluorescence microscopy. Results were compared using ANOVA. Sperm volume (9.43±5.18μL) and concentration (7.79×108±5.32×108 sperm/mL) did not correlate with snout-vent length in adult males (r2=0.025 and r2=0.15, respectively). Due to small volumes, sperm samples (motility >80%) from 4 to 6 males were pooled before allocation across treatments. For all cryopreservation experiments, sperm samples (5-10μL) were loaded into 0.2-mL French straws and frozen using a controlled-rate freezer (Cryobath; −6°C per minute), then plunged into LN. Sperm were thawed in a water bath at 35°C for 10s. In year 1, pooled samples (n=3) were maintained at room temperature (21±1.5°C) either raw, or diluted in PBS, Tris-citrate glucose, TLHepes, or Ham’s F-10 and assessed at 0, 1, 3, 16, 40h. Tris-citrate-glucose-diluted sperm had significantly lower total motility from 3h (36.7±11.5%; P<0.05), decreasing to 1% motility by 16h. Up to 70% motility could be maintained for 16h in all other treatment groups. In year 2, pooled samples (n=3) were cooled to 4°C over a period of 2h, then gradually diluted 1:1 with buffer to a final concentration of either 0.6, 1.35, or 2.7M cryoprotectant (CPA; dimethyl sulfoxide, dimethyl acetamide, glycerol) in PBS or no CPA. Sperm diluted in 1.35 and 2.7M dimethyl sulfoxide in PBS had significantly (P<0.05) higher kinetic rating and proportion of live sperm than control or dimethyl acetamide treatments; 1.35 and 2.7M glycerol were intermediate. In year 3, dilution and cryopreservation using 1.35M CPA in complex diluents, Tris-yolk buffer (20.1±2.6% live) and Beltsville poultry semen extender (29.7±2.0% live), did not significantly improve sperm survival compared to PBS (26.4±2.7% live); however, post-thaw progressive motility (5±1.1%) was significantly (P < 0.05) higher with 1.35M dimethyl sulfoxide Tris-yolk buffer than all other treatment groups. In conclusion, dimethyl sulfoxide yields promise for sperm cryopreservation in a skink, but further studies are required.

scholarly journals Sperm Cryopreservation in American Flamingo (Phoenicopterus Ruber): Influence of Cryoprotectants and Seminal Plasma Removal

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 203
Author(s):  
María Gemma Millán de la Blanca ◽  
Eva Martínez-Nevado ◽  
Cristina Castaño ◽  
Juncal García ◽  
Berenice Bernal ◽  
...  
Keyword(s):  
Seminal Plasma ◽  
Genetic Material ◽  
First Year ◽  
Sperm Cryopreservation ◽  
Straight Line ◽  
The Family ◽  
Second Year ◽  
American Flamingo ◽  
Phoenicopterus Ruber

The American flamingo is a useful model for the development of successful semen cryopreservation procedures to be applied to threatened related species from the family Phoenicopteridae, and to permit genetic material banking. Current study sought to develop effective sperm cryopreservation protocols through examining the influences of two permeating cryoprotectants and the seminal plasma removal. During two consecutive years (April), semen samples were collected and frozen from American flamingos. In the first year, the effect of two permeating cryoprotectants, DMA (dimethylacetamide) (6%) or Me2SO (dimethylsulphoxide) (8%), on frozen–thawed sperm variables were compared in 21 males. No differences were seen between DMA and Me2SO for sperm motility, sperm viability, and DNA fragmentation after thawing. In the second year, the role of seminal plasma on sperm cryoresistance was investigated in 31 flamingos. Sperm samples were cryopreserved with and without seminal plasma, using Me2SO (8%) as a cryoprotectant. The results showed that samples with seminal plasma had higher values than samples without seminal plasma for the following sperm variables: Straight line velocity (22.40 µm/s vs. 16.64 µm/s), wobble (75.83% vs. 69.40%), (p < 0.05), linearity (62.73% vs. 52.01%) and straightness (82.38% vs. 73.79%) (p < 0.01); but acrosome integrity was lower (55.56% vs. 66.88%) (p < 0.05). The cryoresistance ratio (CR) was greater in samples frozen with seminal plasma than without seminal plasma for CR-progressive motility (138.72 vs. 54.59), CR-curvilinear velocity (105.98 vs. 89.32), CR-straight line velocity (152.77 vs. 112.58), CR-average path velocity (122.48 vs. 98.12), CR-wobble (111.75 vs. 102.04) (p < 0.05), CR-linearity (139.41 vs. 113.18), and CR-straightness (124.02 vs. 109.97) (p < 0.01). This research demonstrated that there were not differences between Me2SO and DMA to successful freezing sperm of flamingos; seminal plasma removal did not provide a benefit for sperm cryopreservation.

scholarly journals Effects of Cryoprotective Medium Composition, Dilution Ratio, and Freezing Rates on Spotted Halibut (Verasper variegatus) Sperm Cryopreservation

Animals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2153
Author(s):  
Irfan Zidni ◽  
Yun Ho Lee ◽  
Jung Yeol Park ◽  
Hyo Bin Lee ◽  
Jun Wook Hur ◽  
...  
Keyword(s):  
Previous Experiment ◽  
Activity Index ◽  
Medium Composition ◽  
Freezing Rate ◽  
Dilution Ratio ◽  
Sperm Cryopreservation ◽  
Ringer’S Solution ◽  
Potential Market ◽  
Spotted Halibut ◽  
Cryopreservation Protocol

The spotted halibut is species that has a high potential market value in Korea, but the supply of seed is unstable because of the limited milt production of males. The objective of this research was to explore different aspects, such as CPAs, diluents, dilution ratio, and freezing rates, to develop an optimal sperm cryopreservation. The parameters assessed were movable sperm ratio, sperm activity index, survival rate, and DNA damage. The CPAs tested in this research were propylene glycol, dimethyl sulfoxide (DMSO), methanol, ethylene glycol, and glycerol. Different diluents, including 300 mM sucrose, 300 mM glucose, Stain’s solution, and Ringer’s solution, were investigated. The previous experiment showed that the optimal CPA for cryopreservation was DMSO with a concentration of 15% with 300 mM as diluent. To determine the effect of the dilution ratio, sperm was diluted to 1:1, 1:2, 1:10, 1:100, and 1:1000 with 300 mM sucrose containing DMSO at a final concentration of 15%. Lastly, the optimal freezing rate of the sperm was evaluated with four different freezing rates (−1, −5, −10, and −20 °C/min). Post-thaw sperm motility was higher with a dilution ratio lower than 1:2, and the freezing rate was less than −5 °C/min. In conclusion, these findings represent the development of a cryopreservation protocol for spotted halibut.

scholarly journals Differential Diagnosis of Azoospermia in Men with Infertility

2021 ◽  
Vol 10 (14) ◽  
pp. 3144
Author(s):  
Danilo L. Andrade ◽  
Marina C. Viana ◽  
Sandro C. Esteves
Keyword(s):  
Differential Diagnosis ◽  
Physical Examination ◽  
Detailed Analysis ◽  
Clinical Management ◽  
Semen Analysis ◽  
Testicular Biopsy ◽  
Nonobstructive Azoospermia ◽  
Sperm Cryopreservation ◽  
Imaging Studies ◽  
Detailed Medical History

The differential diagnosis between obstructive and nonobstructive azoospermia is the first step in the clinical management of azoospermic patients with infertility. It includes a detailed medical history and physical examination, semen analysis, hormonal assessment, genetic tests, and imaging studies. A testicular biopsy is reserved for the cases of doubt, mainly in patients whose history, physical examination, and endocrine analysis are inconclusive. The latter should be combined with sperm extraction for possible sperm cryopreservation. We present a detailed analysis on how to make the azoospermia differential diagnosis and discuss three clinical cases where the differential diagnosis was challenging. A coordinated effort involving reproductive urologists/andrologists, geneticists, pathologists, and embryologists will offer the best diagnostic path for men with azoospermia.

Effects of bovine sperm cryopreservation using different freezing techniques and cryoprotective agents on plasma, acrosomal and mitochondrial membranes

Andrologia ◽  
2012 ◽  
Vol 44 ◽  
pp. 154-159 ◽  
Author(s):  
R. A. Forero-Gonzalez ◽  
E. C. C. Celeghini ◽  
C. F. Raphael ◽  
A. F. C. Andrade ◽  
F. F. Bressan ◽  
...  
Keyword(s):  
Sperm Cryopreservation ◽  
Mitochondrial Membranes ◽  
Cryoprotective Agents ◽  
Bovine Sperm

Investigating sperm cryopreservation in a model tunicate, Ciona intestinalis sp. A

Cryobiology ◽  
2014 ◽  
Vol 68 (1) ◽  
pp. 43-49 ◽  
Author(s):  
Gerarda Sorrenti ◽  
Anna Bagnoli ◽  
Valentina Miraglia ◽  
Fabio Crocetta ◽  
Valentina Vitiello ◽  
...  
Keyword(s):  
Ciona Intestinalis ◽  
Sperm Cryopreservation

scholarly journals Sperm cryopreservation of a live-bearing fish, the platyfish Xiphophorus couchianus

2004 ◽  
Vol 62 (6) ◽  
pp. 971-989 ◽  
Author(s):  
Changjiang Huang ◽  
Qiaoxiang Dong ◽  
Terrence R Tiersch
Keyword(s):  
Sperm Cryopreservation
Sign in / Sign up

Export Citation Format

Share Document