Evidence map›Paper›PMID 35386378›Full record

ArticleReproductive medicine and biology

Effects of antioxidant co-supplementation therapy on spermatogenesis dysfunction in relation to the basal oxidation-reduction potential levels in spermatozoa: A pilot study.

Kazumitsu Yamasaki, Masahiro Uchida, Noriko Watanabe, Tatsuji Ihana, Yukari Ishiguro, Shinnosuke Kuroda, Teppei Takeshima, Yasushi Yumura, Makiko Mieno, Kaoru Yoshida and 2 more

Open access · goldAbstract read
In one paragraph

Article in Reproductive medicine and biology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 17% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Micronutrient Antioxidants for Men (MenevitAntioxidants (Basel, Switzerland) · 2024
    Article
  6. Article
  7. Review
  8. 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

12 authors at 6 institutions in 2 countries.

Kazumitsu YamasakiDepartment of Urology Tsukuba Gakuen Hospital Tsukuba Japan.ORCID https://orcid.org/0000-0002-8414-2393
Masahiro UchidaDepartment of Urology Tsukuba Gakuen Hospital Tsukuba Japan.
Noriko WatanabeOak Clinic Ginza Chuo-ku Japan.
Tatsuji IhanaCenter for Human Reproduction and Gynecologic Endoscopy Sanno Hospital Minato-ku Japan.
Yukari IshiguroDepartment of Urology, Reproduction Center Yokohama City University Medical Center Yokohama Japan.
Shinnosuke KurodaDepartment of Urology, Reproduction Center Yokohama City University Medical Center Yokohama Japan.
Teppei TakeshimaDepartment of Urology, Reproduction Center Yokohama City University Medical Center Yokohama Japan.
Yasushi YumuraDepartment of Urology, Reproduction Center Yokohama City University Medical Center Yokohama Japan.ORCID https://orcid.org/0000-0003-0909-478X
Makiko MienoDepartment of Medical Informatics Center for Information Jichi Medical University Shimotsuke Japan.
Kaoru YoshidaFaculty of Biomedical Engineering Toin University of Yokohama Yokohama Japan.
Teruaki IwamotoMale Infertility Center for Human Reproduction Sanno Hospital Minato-ku Japan.
Hiroyuki NishiyamaDepartment of Urology Faculty of Medicine University of Tsukuba Tsukuba Japan.
Yokohama City University Medical Center · JPSanno Medical Center · JPTsukuba Memorial Hospital · JPJichi Medical University · JPToin University of Yokohama · JPUniversity of Tsukuba · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: In this pilot study, the authors compared the effects of antioxidant co-supplementation therapy and methylcobalamin therapy in patients with impaired semen quality. Methods: Eighty-four subjects who visited male infertility clinics and showed abnormal semen test results were randomly subjected to one of the two therapies: antioxidant co-supplementation therapy with vitamin C, vitamin E, coenzyme Q10, and flaxseed oil or methylcobalamin therapy. The oxidation-reduction potential (ORP) and 8-hydroxy-2'-deoxyguanosine levels were used as indicators of oxidative stress levels in semen. Semen analysis was also performed. Results: The authors obtained results from 67 patients who had completed 3 months of treatment. Neither antioxidant co-supplementation therapy nor methylcobalamin therapy changed the semen parameters significantly (except for the sperm concentration, which was increased by the latter therapy). When the pre-treatment ORP value in semen was higher than the cutoff value, both therapies significantly increased the sperm concentration. The 8-hydroxy-2'-deoxyguanosine level did not yield any meaningful predictive value with regard to increased sperm concentrations. Conclusions: Both antioxidant co-supplementation therapy and methylcobalamin therapy increased the sperm concentration in patients with impaired semen quality when the basal ORP levels in their semen were elevated.

Indexed as

8‐hydroxy‐2′‐deoxyguanosineantioxidantinfertility, maleoxidation–reductionsperm count

Identifiers

PMID35386378
PMCPMC8967282
OpenAlexW4214493527

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.