Evidence map›Paper›PMID 22014308›Full record

ArticleReproductive biology and endocrinology : RB&E2011

Expression of aldo-keto reductase family 1 member C1 (AKR1C1) gene in porcine ovary and uterine endometrium during the estrous cycle and pregnancy.

Kyeong-Seok Seo, Purevjargal Naidansuren, Sang-Hwan Kim, Seong-Jo Yun, Jong-Ju Park, Bo-Woong Sim, Cha-Won Park, Tseeleema Nanjidsuren, Myung-Hwa Kang, Heewon Seo and 6 more

Open access · goldAbstract read
In one paragraph

Article in Reproductive biology and endocrinology : RB&E, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.8field-weighted citation impact, top 29% 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

7 citing papers in PubMed, 20 citations in OpenAlex.

  1. Mechanisms of Protection Against Oxidative Stress During Hibernation.International journal of molecular sciences · 2026
    Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. 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

16 authors at 6 institutions in 3 countries.

Kyeong-Seok SeoAnimal Biotechnology, Graduate School of Bio & Information Technology, Institute of Genetic Engineering, Hankyong National University, Ansung 456-749, Korea.
Purevjargal Naidansuren
Sang-Hwan Kim
Seong-Jo Yun
Jong-Ju Park
Bo-Woong Sim
Cha-Won Park
Tseeleema Nanjidsuren
Myung-Hwa Kang
Heewon Seo
Hakhyun Ka
Nam-Hyung Kim
Sue-Yun Hwang
Jong-Taek Yoon
Keitaro Yamanouchi
Kwan-Sik Min
Hankyong National University · KRInformation Technology Institute · EGYonsei University · KRChungbuk National University · KRHoseo University · KRThe University of Tokyo · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe aldo-keto reductase family 1 member C1 (AKR1C1) belongs to a superfamily of NADPH-dependent reductases that convert a wide range of substrates, including carbohydrates, steroid hormones, and endogenous prostaglandins. The 20 alpha-hydroxysteroid dehydrogenase (20 alpha-HSD) is a member of AKR family. The aims of this study were to determine its expression in the ovary and uterus endometrium during the estrous cycle and pregnancy.

methodsRapid amplification of cDNA ends (RACE) experiments were performed to obtain the 5' and 3' ends of the porcine 20 alpha-HSD cDNA. Reverse-transcriptase-PCR (RT-PCR), real-time PCR, northern blot analysis, and western blot analysis were performed to examine the expression of porcine 20 alpha-HSD. Immunohistochemical analysis was also performed to determine the localization in the ovary.

resultsThe porcine 20 alpha-HSD cDNA is 957 bp in length and encodes a protein of 319 amino acids. The cloned cDNA was virtually the same as the porcine AKR1C1 gene (337 amino acids) reported recently, and only differed in the C-terminal region (the AKR1C1 gene has a longer C-terminal region than our sequence). The 20 alpha-HSD gene (from now on referred to as AKR1C1) cloned in this paper encodes a deletion of 4 amino acids, compared with the C-terminal region of AKR1C1 genes from other animals. Porcine AKR1C1 mRNA was expressed on day 5, 10, 12, 15 of the cycle and 0-60 of pregnancy in the ovary. The mRNA was also specifically detected in the uterine endometrium on day 30 of pregnancy. Western blot analysis indicated that the pattern of AKR1C1 protein in the ovary during the estrous cycle and uterus during early pregnancy was similar to that of AKR1C1 mRNA expression. The recombinant protein produced in CHO cells was detected at approximately 37 kDa. Immunohistochemical analysis also revealed that pig AKR1C1 protein was localized in the large luteal cells in the early stages of the estrous cycle and before parturition.

conclusionsOur study demonstrated that AKR1C1 mRNA and protein are coordinately expressed in the luteal cell of ovary throughout the estrous cycle and in the uterus on day 30 of pregnancy. Thus, the porcine AKR1C1 gene might control important mechanisms during the estrous cycle.

Indexed as

20-alpha-Hydroxysteroid DehydrogenaseAmino Acid SequenceAnimalsCell SizeCodon, TerminatorDatabases, Nucleic AcidEndometriumEstrous CycleFemaleGene Expression Regulation, EnzymologicLuteal CellsMolecular Sequence DataMolecular WeightOvaryPregnancyPregnancy Proteins20-alpha-Hydroxysteroid DehydrogenaseCodon, TerminatorPregnancy ProteinsRecombinant ProteinsRNA, Messenger

Identifiers

PMID22014308
PMCPMC3213009
OpenAlexW2139624492

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.