Cited by 51Sperm and Testicular FunctionAdipokines, Inflammation, and Metabolic DiseasesEstrogen and related hormone effects

The DOI matches its Crossref record; 41 of the 41 references it cites were found in a registry or an index.

Research Progress on the Relationship between Obesity-Inflammation-Aromatase Axis and Male Infertility

Open access
Yuxin, Liu, Chen, Lin, Xiaoxia, Luo, Yue, Luo, Junjie, Lai, Youzhu, Li, Huiliang, Zhou, Qicai, Liu·2021·Oxidative Medicine and Cellular Longevity

Abstract

Aromatase is a key enzyme in the transformation of androgen into estrogen. Its high expression will destroy the hormonal balance in the male body, and the excessive transformation of androgen into estrogen in the body will further damage the spermatogenic function of the testis, affect the normal development of the sperm, and cause spermatogenic disturbance. Adipose tissue has a high expression of aromatase and shows high enzymatic activity and ability to convert estrogen. Adipose tissue is the most estrogen‐producing nongonadal tissue in the body because of its large size, accounting for about 20% of the body mass in healthy adults. PPAR γ is recognized as the key adipose differentiation in the transcriptional regulation of the transcription factor. In the process of adipocyte differentiation, PPAR γ regulate the expression of aromatase. The increase of aromatase is associated with the inflammatory response in adipose tissue caused by obesity. After obesity, the increase of proinflammatory factors in adipocytes will lead to enhanced transcription of the CYP19 gene encoding aromatase in adipocytes, which in turn will lead to increased expression of aromatase in adipocytes. This article reviews the regulation of male sterility from the angle of the “obesity‐inflammation‐aromatase” axis.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1155/2021/6612796

Cites

41 of 41 references verified0 citation errors · 0 not checkable

Statistics

Figures

Figure 1 Encoding CYP19A1 gene structure of aromatase.
Figure 1 Encoding CYP19A1 gene structure of aromatase.CC BY · PubMed Central
Figure 2 Signal transduction pathway of aromatase expression regulated by PGE2 through PGT. PGT is a trans-membrane domain transporter that carries extracellular PGE2 into cytoplasm, which activates the CAMP/PKA/CREB pathway by binding to its receptors EP2 and EP4, thus resulting in enhanced interaction between CREB, p300, and aromatase promoter I.3/II. PGE2 also decreased the amounts of BRCA1 and inhibited the interaction of BRCA1 and aromatase promoter I.3/II; then, CYP19 transcription and aromatase activity are enhanced ultimately.
Figure 2 Signal transduction pathway of aromatase expression regulated by PGE2 through PGT. PGT is a trans-membrane domain transporter that carries extracellular PGE2 into cytoplasm, which activates the CAMP/PKA/CREB pathway by binding to its receptors EP2 and EP4, thus resulting in enhanced interaction between CREB, p300, and aromatase promoter I.3/II. PGE2 also decreased the amounts of BRCA1 and inhibited the interaction of BRCA1 and aromatase promoter I.3/II; then, CYP19 transcription and aromatase activity are enhanced ultimately.CC BY · PubMed Central
Figure 3 Effect of aromatase axis disorder on spermatogenic system. During inflammation, the secretion of proinflammatory factors such as IL-1, IL-6, and TNF-α increases the expression of aromatase in adipose tissue. The high expression of aromatase makes androgens irreversibly converted into estrogens, breaking the balance between male and female hormones. That is, the body androgen level drops and the estrogen level rises. Therefore, on the one hand, it can directly regulate the testicular stromal cells so that spermatogenesis cannot proceed normally. On the other hand, the HPG axis is inhibited by inhibiting the release of FSH and LH as well as Leydig and Sertoli cells, thus hindering the process of spermatogenesis.
Figure 3 Effect of aromatase axis disorder on spermatogenic system. During inflammation, the secretion of proinflammatory factors such as IL-1, IL-6, and TNF-α increases the expression of aromatase in adipose tissue. The high expression of aromatase makes androgens irreversibly converted into estrogens, breaking the balance between male and female hormones. That is, the body androgen level drops and the estrogen level rises. Therefore, on the one hand, it can directly regulate the testicular stromal cells so that spermatogenesis cannot proceed normally. On the other hand, the HPG axis is inhibited by inhibiting the release of FSH and LH as well as Leydig and Sertoli cells, thus hindering the process of spermatogenesis.CC BY · PubMed Central
Figure 4 Mechanism of the estrogen-induced phagocytosis of Leydig cells by macrophages. Estrogen acts on macrophages and Leydig cells through estrogen receptor ER. In Leydig cells, estrogen activates its cell surface overexpression of phospholipid amino acid, PS, and growth specificity gene 6, Gas6. Through the Gas6, the PS molecules bind to AXL, one of the TAM receptor tyrosine kinase subfamily, which are overexpressed by macrophages after the estrogen stimulation. Namely, the PS molecules are an “eat me” signal to attract the macrophage cell to engulf the Leydig cells.
Figure 4 Mechanism of the estrogen-induced phagocytosis of Leydig cells by macrophages. Estrogen acts on macrophages and Leydig cells through estrogen receptor ER. In Leydig cells, estrogen activates its cell surface overexpression of phospholipid amino acid, PS, and growth specificity gene 6, Gas6. Through the Gas6, the PS molecules bind to AXL, one of the TAM receptor tyrosine kinase subfamily, which are overexpressed by macrophages after the estrogen stimulation. Namely, the PS molecules are an “eat me” signal to attract the macrophage cell to engulf the Leydig cells.CC BY · PubMed Central

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

1 retracted

Cited by

Sorted by citations

See all 51

Metadata

Authors
Yuxin, L., Chen, L., Xiaoxia, L., Yue, L., Junjie, L., Youzhu, L., Huiliang, Z., & Qicai, L.
Affiliations
  • Fujian Medical University (CN)
  • First Affiliated Hospital of Fujian Medical University (CN)
Venue
Oxidative Medicine and Cellular Longevity
Publisher
Wiley
Published
2021-01
Volume
2021
Issue
1
Pages
6612796-6612796
ISSN
  • 1942-0994 (ISSN-L)
  • 1942-0900
OpenAlex
W3126472018
Cited by
51
References
41
Citations by year
2026: 11 · 2025: 10 · 2024: 8 · 2023: 11 · 2022: 11
FWCI
1.23
Type
journal article
Language
en
Open access
Locations
  • Oxidative Medicine and Cellular Longevity (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Natural Science Foundation of China (81871293)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Sperm and Testicular Function
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adipokines, Inflammation, and Metabolic Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Endocrinology › Estrogen and related hormone effects
Keywords
obesity, inflammation, aromatase, male infertility, adipose tissue, PPARγ, aromatase gene expression, adipogenesis, androgen to estrogen conversion, spermatogenesis, hormonal imbalance
MeSH terms
Animals, Aromatase, Humans, Infertility, Male, Inflammation, Male, Models, Biological, Obesity, Biomedical Research

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review