Evidence map›Paper›PMID 34609666›Full record

ArticleJournal of assisted reproduction and genetics2022

Desiccated cat spermatozoa retain DNA integrity and developmental potential after prolonged storage and shipping at non-cryogenic temperatures.

Pei-Chih Lee, Jennifer Zahmel, Katarina Jewgenow, Pierre Comizzoli

Abstract read
In one paragraph

Article in Journal of assisted reproduction and genetics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Reproductive Sciences to the Rescue of Wild Animal Species.Advances in experimental medicine and biology · 2026
    Review
  7. Article
  8. Current State of In Vitro Embryo Production in African Lion (Animals : an open access journal from MDPI · 2022
    Article
  9. Review
  10. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Pei-Chih LeeSmithsonian Conservation Biology Institute, National Zoological Park, Washington, D.C., USA.ORCID http://orcid.org/0000-0002-7121-5047
Jennifer ZahmelLeibniz-Institute for Zoo and Wildlife Research, Berlin, Germany.ORCID http://orcid.org/0000-0002-3225-4609
Katarina JewgenowLeibniz-Institute for Zoo and Wildlife Research, Berlin, Germany.ORCID http://orcid.org/0000-0002-6173-840X
Pierre ComizzoliSmithsonian Conservation Biology Institute, National Zoological Park, Washington, D.C., USA. comizzolip@si.edu.ORCID http://orcid.org/0000-0003-3079-9063

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the DNA integrity and developmental potential of microwave-dehydrated cat spermatozoa after storage at - 20 °C for different time periods and/or overnight shipping on dry ice.

methodsEpididymal spermatozoa from domestic cats were microwave-dehydrated on coverslips after trehalose exposure. Dried samples were either assessed immediately, stored for various duration at - 20 °C, or shipped internationally on dry ice before continued storage. Dry-stored spermatozoa were rehydrated before assessing DNA integrity (TUNEL assays) or developmental potential (injection into in vitro matured oocytes followed by in vitro embryo culture for up to 7 days).

resultsPercentages of dried-rehydrated spermatozoa with intact DNA was not significantly affected (P > 0.05) by desiccation and short-term storage (range, 78.9 to 80.0%) but decreased (P < 0.05) with storage over 5 months (range, 71.0 to 75.2%) compared to fresh controls (92.6 ± 2.2%). After oocyte injection with fresh or dried-rehydrated spermatozoa (regardless of storage time), percentages of activation, pronuclear formation, and embryo development were similar (P > 0.05). Importantly, spermatozoa shipped internationally also retained the ability to support embryo development up to the morula stage.

conclusionResults demonstrated the possibility to sustain DNA integrity and developmental potential of spermatozoa by dry-preservation, even after long-term storage and long-distance shipment at non-cryogenic temperatures. While further studies are warranted, present results demonstrate that dry preservation can be a reliable approach for simple and cost-effective sperm biobanking or shipment.

Indexed as

AnimalsCatsDesiccationDNAEmbryonic DevelopmentMaleOocytesSemen PreservationSpermatozoaDNADesiccationDevelopmental potentialDNA integrityICSINon-cryogenic storageSpermatozoa

Identifiers

PMID34609666
PMCPMC8866589

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.