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Cryopreservation

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https://www.readbyqxmd.com/read/28078817/birth-of-puppies-of-predetermined-sex-after-artificial-insemination-with-a-low-number-of-sex-sorted-frozen-thawed-spermatozoa-in-field-conditions
#1
Yun-Fang Wei, Fang-Liang Chen, Shu-Sheng Tang, Ai-Guo Mao, Li-Guang Li, Lu-Guang Cheng, Chao Chen, Fei-Xiang Li, Bin Wang, Tao Xu, Yue-Jun Zhang, Jing Li, Jiu-Sheng Wan
The aim of this study was to evaluate fertility and sex ratios after artificial insemination in dogs under field conditions. Semen was cryopreserved as unsorted (control) or was separated into X- and Y-chromosome-bearing sperm using a cell sorter. Sixty female dogs were inseminated with frozen-thawed spermatozoa of 100 × 10(6) unsorted (a dose in practice) and 4 × 10(6) sorted (X and Y group, respectively). A total of 20 dogs became pregnant and 126 puppies were born from the three groups. The percentage of parturition was similar for the X (5/20; 25...
January 11, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28077428/reproductive-experiences-of-women-who-cryopreserved-oocytes-for-non-medical-reasons
#2
Karin Hammarberg, Maggie Kirkman, Natasha Pritchard, Martha Hickey, Michelle Peate, John McBain, Franca Agresta, Chris Bayly, Jane Fisher
STUDY QUESTION: What are the reproductive experiences of women who cryopreserve oocytes for non-medical reasons? SUMMARY ANSWER: One in three women had been pregnant at some stage in their lives and while most still wanted to have a child or another child, very few had used their stored oocytes, predominantly because they did not want to be single parents. WHAT IS KNOWN ALREADY: The number of healthy women who freeze oocytes to avoid age-related infertility is increasing...
January 6, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28072924/cryopreservation-of-carp-cyprinus-carpio-l-sperm-impact-of-seeding-and-freezing-rates-on-post-thaw-outputs
#3
Sergii Boryshpolets, Denisa Sochorová, Marek Rodina, Otomar Linhart, Borys Dzyuba
In the present study, we examined various freezing protocols, effects of controlled seeding, and changes in cooling rate and determined the endpoint (temperature at which sample could be plugged into liquid nitrogen (LN) without visible effect on survival rate after thawing) to reveal the relative importance of each different stage of cooling on freezing success during cryobanking of carp sperm. Sperm samples from different individual carp males were frozen in 0.5 mL straws by conventional freezing. Cooling rates were determined by monitoring the sample's internal temperature...
January 10, 2017: Biopreservation and Biobanking
https://www.readbyqxmd.com/read/28072844/exploring-the-possibility-of-cryopreservation-of-feline-and-canine-erythrocytes-by-rapid-freezing-with-penetrating-and-non-penetrating-cryoprotectants
#4
Denys Pogozhykh, Yuliya Pakhomova, Olga Pervushina, Nicola Hofmann, Birgit Glasmacher, Gennadiy Zhegunov
Efficient application of veterinary blood transfusion approaches for small companion animals requires readily available supply of the donor material. This can be achieved by developing of effective biobanking technologies allowing long-term storage of donor blood components via cryopreservation. Transfusion of an erythrocyte concentrate allows the successful correction of various hematological pathologies, severe bleeding, and etc. While in the past there were several approaches to cryopreserve red blood cells of dogs, to our knowledge there is virtually no data on cryopreservation of feline erythrocytes...
2017: PloS One
https://www.readbyqxmd.com/read/28072432/closed-vitrification-system-as-a-platform-for-cryopreservation-of-tissue-engineered-constructs
#5
N A Trufanova, V S Zaikov, A V Zinchenko, A Yu Petrenko, Y A Petrenko
BACKGROUND: Cryopreservation of mesenchymal stromal cells (MSCs) and MSCs-based tissue engineered constructs (TECs) is a promising strategy for regenerative medicine. OBJECTIVE: To examine vitrification system consisting of multicomponent vitreous solution, closed type container, human adult MSCs and two-step exposure procedure as a platform for cryopreservation of MSCs-based TECs. MATERIALS AND METHODS: Vitrification properties of solutions were studied by visual analysis and calorimetry...
November 2016: Cryo Letters
https://www.readbyqxmd.com/read/28072429/integrating-micro-or-nanoscale-encapsulation-technology-with-vitreous-cryopreservation-a-new-strategy-to-improve-biopreservation
#6
Y Y Zheng, G Zhao
:   BACKGROUND: None-uniform distributions of temperatures, limited freezing and thawing rates, and thermal stresses are three main hindering factors for successful vitreous cryopreservation of mass volume of biosamples. Micro- and nanoscale encapsulation, owning the intrinsic features to avoid those limitations introduced by the traditional approaches, has been opened up a new way for effective and high-efficiency biopreservation. NEW APPROACH: This short review article summarizes recent advances in cell encapsulation technology for biopreservation by manipulating cells and biological agents in micro- or nanoscale volume droplets and microgels, and discusses its promising applications for future vitreous cryopreservation...
November 2016: Cryo Letters
https://www.readbyqxmd.com/read/28072427/calorimetric-studies-on-thermal-properties-of-nano-cryoprotectant-solutions-during-vitrification
#7
H F Xu, B T Hao, L J Liu, L L Tang, B L Liu
:   BACKGROUND: Vitrification, the ice-free cryopreservation, develops rapidly and can become an ideal method for long-term preservation of cells and tissues. But up to now it is not practical for samples with large size because of the ultra-rapid cooling rate required. It has been reported that nanoparticles improve heat conductivity of solutions. MATERIALS AND METHODS: In this study, Hydroxyapatite (HA) nanoparticles(20, 40 or 60nm)at 0.1 %, 0.5 % or 1 % (w/w) were added into glycerol solutions...
November 2016: Cryo Letters
https://www.readbyqxmd.com/read/28072426/effect-of-nanoparticles-on-the-survival-and-development-of-vitrified-porcine-gv-oocytes
#8
W J Li, X L Zhou, B L Liu, J J Dai, P Song, Y Teng
:   BACKGROUND: Some mammalian oocytes have been successfully cryopreserved by vitrification. However, the survival and developmental rate of vitrified oocytes is still low. The incorporation of nanoparticles into cryoprotectant (CPA) may improve the efficiency of vitrification by changing the properties of solutions. MATERIALS AND METHODS: The toxicity of different concentrations of hydroxy apatite (HA), silica dioxide (SO2), aluminum oxide (Al2O3) and titanium dioxide (TiO2) nanoparticles (20 nm in diameter) to oocytes was tested and the toxicity threshold value of each nanoparticle was determined...
November 2016: Cryo Letters
https://www.readbyqxmd.com/read/28072425/direct-microscale-measurement-of-mouse-oocyte-membrane-permeability-to-water-and-ethylene-glycol-at-subzero-temperatures-using-cryomicroscopy
#9
X Han
:   BACKGROUND: Investigation of cell osmotic behavior at subzero temperatures is of critical importance to the optimization of cooling procedures for cryopreservation. Based on established thermodynamic models, plasma membrane permeability coefficients for water and cryoprotectant agent (CPA) (Lcpa, Pp) and their activation energies (Ea(Lp), Ea(Pcpa)) are essential to predict the change of cell volume and composition of intracellular solutions corresponding to different cooling procedures...
November 2016: Cryo Letters
https://www.readbyqxmd.com/read/28072424/a-theoretical-and-experimental-investigation-of-mechanical-damage-to-rodent-sperm-generated-by-microscale-ice-formation
#10
X Han, J K Critser
:   BACKGROUND: Rodent sperm cryopreservation is of critical importance for the maintenance of lines or strains of genetically engineered mice and rats. However, rodent sperm are extremely mechanically sensitive due to their unusual morphology, and are severely damaged using current methods of cryopreservation. Those methods result in poor post thaw motility (PTM) for mouse. OBJECTIVE: To investigate the mechanism of mechanical damage introduced to rodent sperm during freezing, a micro-mechanical model was established to analyze the sperm radial and axial thermal stresses generated by microscale extracellular ice formation...
November 2016: Cryo Letters
https://www.readbyqxmd.com/read/28072423/nanotechnology-based-cryopreservation-of-cell-scaffold-constructs-a-new-breakthrough-to-clinical-application
#11
G Chen, Y Lv
  The developments of "off-the-shelf" cell-scaffold constructs received an increasing interest in tissue engineering and regenerative medicine. Although the direct cryopreservation of a single-cell suspension in the tube is a relative mature technology, the cryopreservation of cell-scaffold constructs remains a challenge. Nanotechnology shows tremendous potential for cryopreservation in regulating of freezing and thawing processes. For example, nanoparticles have been reported to modify the cryoprotective agent (CPA), adjust the process of cooling and warming cycles...
November 2016: Cryo Letters
https://www.readbyqxmd.com/read/28070774/restoring-fertility-with-cryopreserved-prepubertal-testicular-tissue-perspectives-with-hydrogel-encapsulation-nanotechnology-and-bioengineered-scaffolds
#12
Maxime Vermeulen, Jonathan Poels, Francesca de Michele, Anne des Rieux, Christine Wyns
New and improved oncological therapies are now able to cure more than 80% of cancer-affected children in Europe. However, such treatments are gonadotoxic and result in fertility issues, especially in boys who are not able to provide a sperm sample before starting chemo/radiotherapy because of their prepubertal state. For these boys, cryopreservation of immature testicular tissue (ITT) is the only available option, aiming to preserve spermatogonial stem cells (SSCs). Both slow-freezing and vitrification have been investigated to this end and are now applied in a clinical setting for SSC cryopreservation...
January 9, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28070717/identification-of-new-synthetic-cannabinoid-adb-chminaca-mab-chminaca-metabolites-in-human-hepatocytes
#13
Jeremy Carlier, Xingxing Diao, Cristina Sempio, Marilyn A Huestis
ADB-CHMINACA (MAB-CHMINACA) is a new synthetic cannabinoid with high potency and many reported adverse events and fatalities. The drug is currently scheduled in several countries in Europe and the USA. Analytical methods need to be developed to confirm ADB-CHMINACA intake for clinical and forensic programs. For many synthetic cannabinoids, parent compound is not detectable in biological samples after intake, making the detection of metabolites the only way to prove consumption. Therefore, detection of ADB-CHMINACA metabolites in biological specimens is critical...
January 9, 2017: AAPS Journal
https://www.readbyqxmd.com/read/28069807/an-integrated-workflow-to-assess-technical-and-biological-variability-of-cell-population-frequencies-in-human-peripheral-blood-by-flow-cytometry
#14
Julie G Burel, Yu Qian, Cecilia Lindestam Arlehamn, Daniela Weiskopf, Jose Zapardiel-Gonzalo, Randy Taplitz, Robert H Gilman, Mayuko Saito, Aruna D de Silva, Pandurangan Vijayanand, Richard H Scheuermann, Alessandro Sette, Bjoern Peters
In the context of large-scale human system immunology studies, controlling for technical and biological variability is crucial to ensure that experimental data support research conclusions. In this study, we report on a universal workflow to evaluate both technical and biological variation in multiparameter flow cytometry, applied to the development of a 10-color panel to identify all major cell populations and T cell subsets in cryopreserved PBMC. Replicate runs from a control donation and comparison of different gating strategies assessed the technical variability associated with each cell population and permitted the calculation of a quality control score...
January 9, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28069174/management-and-counseling-of-the-male-with-advanced-paternal-age
#15
REVIEW
Michael O Jennings, Ryan C Owen, David Keefe, Edward D Kim
Increasing percentages of children are being born to older fathers. This has resulted in concerns about the potential adverse effects of advanced paternal age. To help clinicians counsel couples, a systemic review was performed to attempt to address questions that these couples may ask: Should routine sperm testing be performed in older males? Should preimplantation genetic diagnosis (PGD) be performed? How do providers counsel patients about risk? Should young males freeze sperm if they plan to delay paternity? Using the terms "advanced paternal age", "semen testing", "preimplantation genetic diagnosis/screening", and "cryopreservation", a comprehensive search was performed in PubMed and the Cochrane Library, and numerous international societal guidelines were reviewed...
January 6, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28069172/morphologic-grading-of-euploid-blastocysts-influences-implantation-and-ongoing-pregnancy-rates
#16
Mohamad Irani, David Reichman, Alex Robles, Alexis Melnick, Owen Davis, Nikica Zaninovic, Kangpu Xu, Zev Rosenwaks
OBJECTIVE: To determine whether blastocyst grading can predict pregnancy outcomes in the frozen-thawed embryo transfer (FET) of euploid blastocysts. DESIGN: Retrospective cohort study. SETTING: Academic medical center. PATIENT(S): Women who underwent FET of euploid embryo(s) between January 2013 and December 2015, with blastocysts were divided into four groups based on their morphologic grading before cryopreservation: excellent (≥3AA), good (3-6AB, 3-6BA, 1-2AA), average (3-6BB, 3-6AC, 3-6CA, 1-2AB, 1-2BA), and poor (1-6BC, 1-6CB, 1-6CC, 1-2BB)...
January 6, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28069012/systematic-review-of-worldwide-trends-in-assisted-reproductive-technology-2004-2013
#17
REVIEW
Vitaly A Kushnir, David H Barad, David F Albertini, Sarah K Darmon, Norbert Gleicher
BACKGROUND: Assisted Reproductive Technology (ART) has undergone considerable changes over the last decade, with consequences on ART outcomes in different regions of the world being unknown. METHODS: We conducted a systematic review of published national and regional ART registry data to assess how changes in clinical practice between 2004 and 2013 have impacted outcomes in Australia and New Zealand, Canada, Continental Europe, the United Kingdom (U.K.), Japan, Latin America, and the United States (U...
January 10, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28068180/clonal-hematopoiesis-associated-with-adverse-outcomes-after-autologous-stem-cell-transplantation-for-lymphoma
#18
Christopher J Gibson, R Coleman Lindsley, Vatche Tchekmedyian, Brenton G Mar, Jiantao Shi, Siddhartha Jaiswal, Alysia Bosworth, Liton Francisco, Jianbo He, Anita Bansal, Elizabeth A Morgan, Ann S Lacasce, Arnold S Freedman, David C Fisher, Eric Jacobsen, Philippe Armand, Edwin P Alyea, John Koreth, Vincent Ho, Robert J Soiffer, Joseph H Antin, Jerome Ritz, Sarah Nikiforow, Stephen J Forman, Franziska Michor, Donna Neuberg, Ravi Bhatia, Smita Bhatia, Benjamin L Ebert
Purpose Clonal hematopoiesis of indeterminate potential (CHIP) is an age-related condition characterized by somatic mutations in the blood of otherwise healthy adults. We hypothesized that in patients undergoing autologous stem-cell transplantation (ASCT) for lymphoma, CHIP at the time of ASCT would be associated with an increased risk of myelodysplastic syndrome and acute myeloid leukemia, collectively termed therapy-related myeloid neoplasm (TMN), and other adverse outcomes. Methods We performed whole-exome sequencing on pre- and post-ASCT samples from 12 patients who developed TMN after autologous transplantation for Hodgkin lymphoma or non-Hodgkin lymphoma and targeted sequencing on cryopreserved aliquots of autologous stem-cell products from 401 patients who underwent ASCT for non-Hodgkin lymphoma between 2003 and 2010...
January 9, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28067273/validation-of-reference-genes-for-cryopreservation-studies-with-the-gorgonian-coral-endosymbiont-symbiodinium
#19
Gabriella Chong, Fu-Wen Kuo, Sujune Tsai, Chiahsin Lin
Quantification by real-time RT-PCR requires a stable internal reference known as a housekeeping gene (HKG) for normalising the mRNA levels of target genes. The present study identified and validated stably expressed HKGs in post-thaw Symbiodinium clade G. Six potential HKGs, namely, pcna, gapdh, 18S rRNA, hsp90, rbcl, and ps1, were analysed using three different algorithms, namely, GeNorm, NormFinder, and BestKeeper. The GeNorm algorithm ranked the candidate genes as follows in the order of decreasing stability: pcna and gapdh > ps1 > 18S rRNA > hsp90 > rbcl...
January 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28065417/assisted-reproduction-technique-outcomes-for-fresh-versus-deferred-cryopreserved-day-2-embryo-transfer-a-retrospective-matched-cohort-study
#20
Mathilde Bourdon, Pietro Santulli, Vanessa Gayet, Chloé Maignien, Louis Marcellin, Khaled Pocate-Cheriet, Charles Chapron
Ovarian stimulation could adversely affect endometrial receptivity and consequently embryo implantation. One emerging strategy is the 'freeze-all' approach. Most studies have focused on blastocyst transfers, with limited research on day-2 deferred cryopreserved embryo transfers. In this large retrospective cohort study, outcomes were compared between day-2 fresh versus deferred cryopreserved embryo transfers. After matching by age and number of previous cycles, 325 cycles were included in the fresh group and 325 in the deferred cryopreserved embryo transfers group: no significant differences were found between groups in implantation (0...
December 19, 2016: Reproductive Biomedicine Online
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