Evidence map›Paper›PMID 22279170›Full record

ArticleProceedings. Biological sciences2012

Reduced metabolic rate and oxygen radicals production in stored insect sperm.

Anne-Cécile Ribou, Klaus Reinhardt

Abstract read
In one paragraph

Article in Proceedings. Biological sciences, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
–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

25 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Per capita sperm metabolism is density dependent.The Journal of experimental biology · 2024
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Drosophila melanogaster sperm turn more oxidative in the female.The Journal of experimental biology · 2024
    Article
  6. Article
  7. Patterns of Remating Behaviour inFrontiers in physiology · 2022
    Article
  8. Article
  9. Article
  10. Article
  11. The role of oxidative stress in postcopulatory selection.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020
    Review
  12. Article
  13. Article
  14. Article
  15. The importance of a halotyrosine dehalogenase forThe Journal of biological chemistry · 2018
    Article
  16. Article
  17. Article
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  19. Article
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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

2 authors.

Anne-Cécile RibouInstitut de Modélisation et d'Analyse en Géo-Environnement et Santé, Université de Perpignan Via Domitia, 52 Avenue Paul Alduy, 66860 Perpignan, France.
Klaus Reinhardt

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Females of internally fertilizing species can significantly extend sperm lifespan and functionality during sperm storage. The mechanisms for such delayed cellular senescence remain unknown. Here, we apply current hypotheses of cellular senescence developed for diploid cells to sperm cells, and empirically test opposing predictions on the relationship between sperm metabolic rate and oxygen radical production in an insect model, the cricket Gryllus bimaculatus. Using time-resolved microfluorimetry, we found a negative correlation between metabolic rate (proportion of protein-bound NAD[P]H) and in situ intracellular oxygen radicals production in freshly ejaculated sperm. In contrast, sperm stored by females for periods of 1 h to 26 days showed a positive correlation between metabolic rate and oxygen radicals production. At the same time, stored sperm showed a 37 per cent reduced metabolic rate, and 42 per cent reduced reactive oxygen species (ROS) production, compared with freshly ejaculated sperm. Rank differences between males in ROS production and metabolic rate observed in ejaculated sperm did not predict rank differences in stored sperm. Our method of simultaneously measuring ROS production and metabolic rate of the same sample has the advantage of providing data that are independent of sperm density and any extracellular antioxidants that are proteins. Our method also excludes effects owing to accumulated hydrogen peroxide. Our results unify aspects of competing theories of cellular ageing and suggest that reducing metabolic rate may be an important means of extending stored sperm lifespan and functionality in crickets. Our data also provide a possible explanation for why traits of ejaculates sampled from the male may be rather poor predictors of paternity in sexual selection studies and likelihood of pregnancy in reproductive medicine.

Indexed as

AnimalsBasal MetabolismEjaculationFemaleFluorometryGryllidaeHydrogen PeroxideMaleNADPReactive Oxygen SpeciesSexual Behavior, AnimalSpermatozoaHydrogen PeroxideNADPReactive Oxygen Species

Identifiers

PMID22279170
PMCPMC3321705

What OpenQuestion holds

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Registered trials

None linked

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.