Evidence map›Paper›PMID 29774457›Full record

ArticleJournal of assisted reproduction and genetics2018

Vitamin D as a follicular marker of human oocyte quality and a serum marker of in vitro fertilization outcome.

Przemysław Ciepiela, Antoni J Dulęba, Ewelina Kowaleczko, Kornel Chełstowski, Rafał Kurzawa

Open access · hybridAbstract read
In one paragraph

Article in Journal of assisted reproduction and genetics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 3 pooled it
8.5field-weighted citation impact, top 2% of its field
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

34 citing papers in PubMed, 3 syntheses or guidelines pooled it, 77 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Vitamin D and in vitro fertilization: a systematic review.Journal of assisted reproduction and genetics · 2023
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  20. Thyroid autoimmunity and vitamin D: Effects onFrontiers in endocrinology · 2022
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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

5 authors at 3 institutions in 2 countries.

Przemysław CiepielaDepartment of Gynecology and Reproductive Health, Pomeranian Medical University, 48 Żołnierska St., 71-210, Szczecin, Poland.
Antoni J DulębaDivision of Reproductive Endocrinology and Infertility, University of California, San Diego, 3350 La Jolla Village Dr, San Diego, CA, 92161, USA.
Ewelina KowaleczkoVitroLive Fertility Clinic, 2A Kasprzaka St., 71-074, Szczecin, Poland.
Kornel ChełstowskiDepartment of Laboratory Diagnostics and Molecular Medicine, Pomeranian Medical University, 72 Powstańców Wielkopolskich Ave., 70-111, Szczecin, Poland.
Rafał KurzawaDepartment of Gynecology and Reproductive Health, Pomeranian Medical University, 48 Żołnierska St., 71-210, Szczecin, Poland. kurzawa@pum.edu.pl.ORCID http://orcid.org/0000-0001-7853-6591
Pomeranian Medical University · PLUniversity of California San Diego · USUniversity of Szczecin · PL

Funding

The National Science Centre of Poland N N407 217040
6 · The paper itself

Abstract

purposeThis study investigated the relationship between the vitamin D [25(OH)D] level in individual follicles and oocyte developmental competence.

methodsA prospective cohort study in a private infertility center. Infertile women (N = 198) scheduled for intracytoplasmic sperm injection (ICSI) and a single embryo transfer (SET) provided serum samples and 322 follicular fluid (FF) specimens, each from a single follicle on the day of oocyte retrieval.

resultsFFs corresponding to successfully fertilized oocytes (following ICSI) contained significantly lower 25(OH)D level compared with those that were not fertilized (28.4 vs. 34.0 ng/ml, P = 0.001). Top quality embryos on the third day after fertilization, when compared to other available embryos, developed from oocytes collected from follicles containing significantly lower 25(OH)D levels (24.56 vs. 29.59 ng/ml, P = 0.007). Positive hCG, clinical pregnancy, and live birth rates were achieved from embryos derived from oocytes that grew in FF with significantly lower 25(OH)D levels than in follicles not associated with subsequent pregnancy. The concentration of 25(OH)D in FF in women with negative hCG was 32.23 ± 20.21 ng/ml, positive hCG 23.62 ± 6.09 ng/ml, clinical pregnancy 23.13 ± 6.09 ng/ml, and live birth 23.45 ± 6.11 ng/ml (P < 0.001). Women with serum 25(OH)D < 20 ng/ml had not only a higher fertilization rate (71 vs. 61.6%, P = 0.026) and a higher clinical pregnancy rate (48.2 vs. 25%, P = 0.001), but also higher miscarriage rate (14.5 vs. 3.8%, P = 0.013) compared with those with levels ≥ 20 ng/ml.

conclusionThis study reveals that the level of 25(OH)D in FF correlates negatively with the oocytes' ability to undergo fertilization and subsequent preimplantation embryo development. Oocytes matured in FF with low 25(OH)D concentration are more likely to produce top quality embryos and are associated with higher pregnancy and delivery rates. On the other hand, low serum vitamin D concentration is associated with higher miscarriage rates.

Indexed as

AdultBiomarkersBirth RateEmbryonic DevelopmentFemaleFertilizationFertilization in VitroFollicular FluidHumansInfertility, FemaleLive BirthOocyte RetrievalOocytesOogenesisOvarian FolliclePregnancyBiomarkersVitamin DFollicular fluidICSI (intracytoplasmic sperm injection)Oocyte qualitySingle embryo transfer (SET)Vitamin D [25(OH)D]

Identifiers

PMID29774457
PMCPMC6063829
OpenAlexW2803223043

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.