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Comparative study between agonist and antagonist protocols in PCOS patients undergoing ICSI: a cross-sectional study
Conclusion: The antagonist protocol may be the preferred stimulation protocol for PCOS patients treated by ICSI in view of the reduction of OHSS incidence rates without compromising the pregnancy outcome.
Dehydroepiandrosterone Supplementation Improves the Outcomes of in vitro Fertilization Cycles in Older Patients With Diminished Ovarian Reserve
Conclusions: Our data suggest that DHEA supplementation might increase both oocyte and embryo yields, as well as cumulative pregnancy rates, in patients fulfilling the POSEIDON group 4 criteria.
Future Perspectives of POSEIDON Stratification for Clinical Practice and Research
The key to success seems to be individualization in all steps of treatment. In this perspective article we discuss the future impact of the POSEIDON stratification for daily clinical practice as well as for research.
The novel POSEIDON stratification of ‘Low prognosis patients in Assisted Reproductive Technology’ and its proposed marker of successful outcome
Recently, the POSEIDON group (Patient-Oriented Strategies Encompassing IndividualizeD Oocyte Number) proposed a new stratification of assisted reproductive technology (ART) in patients with a reduced ovarian reserve or unexpected inappropriate ovarian response to exogenous gonadotropins. In brief, four subgroups have been suggested based on quantitative and qualitative parameters, namely, i. Age and the expected aneuploidy rate: ii. Ovarian bioma
Cumulative probabilities of live birth across multiple complete IVF/ICSI cycles: a call for attention
Conclusion: Infertile women should be informed that cumulative LB probabilities exhibit an inverted pattern to that displayed by each individual ORC as well as when grouping together all the ORCs undergone by a woman.
Does combining magnetic-activated cell sorting with density gradient or swim-up improve sperm selection? [published in 2016]
Conclusions: Considering the cost/benefit ratio, MACS application together with traditional techniques may only be preferred in certain cases having higher concentrations of spermatozoa, but it does not seem to be an ideal and practical sperm selection technique for routine use.
Preimplantation genetic testing for aneuploidy: a comparison of live birth rates in patients with recurrent pregnancy loss due to embryonic aneuploidy
A large portion of pregnancy losses in the RPL group might be due to aneuploidy, since PGT-A reduced the overall incidence of pregnancy loss in these patients. Although PGT-A did not improve the live birth rate per patient, it did have the advantage of reducing the number of embryo transfers required to achieve a similar number live births compared with those not undergoing PGT-A.
The POSEIDON Criteria and Its Measure of Success Through the Eyes of Clinicians and Embryologists
The novel POSEIDON classification system is anticipated to improve counseling and management of low prognosis patients undergoing ART, with an expected positive effect on reproductive success and a reduction in the time to live birth.
Benefits of Short and Long-Term pH Trending [Safesens production]
The lab has been using pH monitoring with their equipment regularly and has determined that their pH values are within an acceptable range, even during frequent door openings. Based on this data, the lab asks, if the incubators are holding steady then why bother continuing with pH monitoring?
Video Links / [Posted:13/12/2019] / [Source:www.youtube.com] Viewed: 777
Comments Linked to this Mailout
Title
Does MACS post processing improve the quality of a sperm preparation?
Summary
At first glance the answer is no but there is more to the story.
Comment
In this 2016 article from a Turkish clinic, the quality of the sperm suspension after either swim-up or density gradient centrifugation (DGC) preparation followed by an additional isolation only MACS positive cells was investigated using a number of interesting tools. MACS (magnetic-activated cell sorting ) collects sperm that have lipid membrane associated with normal and non-apoptotic cells using annexin V-labelled beads that have a high affinity for externalized phosphatidylserine molecules. |They compared the sperm that bound the MACS beads to the feeder sperm population prepared by either swim-up of DGC and asked the question whether the populations were different. Does MACS post treatment result in a sperm population that appears better. |What was interesting about this paper was the tools they used to investigate to sample. They applied TUNEL (for DNA fragmentation), Chromomycin A3 (CMA3) staining for sperm chromatin integrity, PLCz for oocyte activation potential after fertilisation and for oocyte fertilization (Izumo-1, sperm-oocyte fusion protein). |They observed that the number of sperm, motile sperm and morphologically normal sperm were less after MACS screening. They did report that the porportion of TUNEL-negative (sperm with little DNA fragmentation) was increased but in this study to at a significant level. Of interest was that the proportion of PLCz and Izumo-1 did not change. They concluded that given the time and cost, MACS post processing did not add any additional value to the routine swim-ip for DGC procedures. |The first observation that can be made is that swim-up or DGC do extract from semen, a sperm population that is remarkably good in terms of PLCz and Izumo-1 qualities. The second observation was that even in this study, statistically significance was not achieved (maybe in a bigger sample it may do so) in selecting sperm using apoptotic-free markers. But it did improve at a P<0.1 level the number of sperm with healthy DNA. Given the association between miscarriage and DNA fragmentation, this alone may warrant its use.| Finally, it has to be said that just because the MACS processing did not produce a significantly better, more uniformily healthy sperm suspension, does not mean the technique should be discared. The real question is it harmful. Clearly it is not. Therefore applying MACS to a sperm prepation means that the sperm selected for ICSI must on all probability be more likely to be better. Since the MACS processing appears to lead to a loss of sperm numbers, this is of no consequence for ICSI as the authors pointed out. There is an arguement to be made to try to select the best sperm for injection and this article suggests that MACS post processing may go some way towards this goal. |Finally, the authors did report that there were fewer morphologically normal sperm after MACS processing. They did not speculate on this but it is difficult to understand how this can be. One would have expected an increase. Does this mean that some sperm with normal morphology do have an external membrane linked to apoptosis. It would be interesting to see further work on this maybe redefining the definition of normal sperm morphology.|
IVF Training - Questions relating to mailout links -
Open Challenge and complete Questions
Question
Type
Options
MACS cell sorting seek to separate sperm based upon
1
6
TUNEL assesses which sperm property
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7
Chromomycin A3 (CMA3) staining assesses Which Sperm Property
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7
Izumo-1 staining Assesses Which Sperm Property
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7
Phospholipase C zeta (PLC-z) staining Assesses Which Sperm Property
1
7
The effect of MACS processing of a Swimup or density gradient preparation resulted in
2
8
The pregnancy rate for the two down regulation protocols for PCOS clients was reported as
1
3
What was the risk of mild OHSS between agonists and antagonists PCOS cycles
1
3
Group 1 has the following characteristics.
2
6
Group 2 Has The Following Characteristics.
2
6
Group 3 Has The Following Characteristics.
2
6
Group 4 Has The Following Characteristics.
2
6
IVFLabOnline - Recent Enteries to IVFLabOnlines product listings.see IVFLabonline
In-line filter for cylinder and house gasses
O2, N2, CO2, and tri-gas. Aire~LifeLine provides in-line air filtration with top of the line protection, delivering a better and more consistent yield of cylinder and house gasses for a wide range of med
Vit Kit - Warm NX is an adaptable, cost-effective system for use in the thawing of oocytes, pronuclear zygotes, cleavage stage embryos, and blastocyst stage embryos. Unlike many vitrification kits that feature a mono-buffered system and M199 base med
Vit Kit - Freeze NX is an adaptable, cost-effective system for use in the vitrification of oocytes, pronuclear zygotes, cleavage stage embryos, and blastocyst stage embryos. Vit Kit - Freeze NX is the latest advancement in vitrification media aimed t
S-Cryolock is the slimmer version of the original. It is a versatile, simple and efficient vitrification device that is intended for the holding, cryopreservation and storage of oocytes or embryos in liquid nitrogen.
Source
Irvine Scientific
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