Evidence map›Paper›PMID 2441391›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1987

Differential expression of opioid peptide genes by testicular germ cells and somatic cells.

D L Kilpatrick, K Borland, D F Jin

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1987. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

19 citing papers in PubMed, 72 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Regulation of male fertility by the opioid system.Molecular medicine (Cambridge, Mass.) · 2011
    Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Atypical prodynorphin gene expression in corticosteroid-producing cells of the rat adrenal gland.Proceedings of the National Academy of Sciences of the United States of America · 1991
    Article
  11. List of cloned mouse genes with unique expression patterns during spermatogenesis.Mammalian genome : official journal of the International Mammalian Genome Society · 1991
    Article
  12. Proenkephalin products are stored in the sperm acrosome and may function in fertilization.Proceedings of the National Academy of Sciences of the United States of America · 1990
    Article
  13. Article
  14. Article
  15. Article
  16. 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

3 authors.

D L Kilpatrick
K Borland
D F Jin

Funding

TRANSCRIPTIONAL CONTROL OF SPERMATOGENESISR01DK036468 · NIDDK · WORCESTER FOUNDATION FOR BIOMEDICAL RES · PI KILPATRICK, DANIEL L · 1986 to 2000
$345k
NIDDK NIH HHS DK36468
6 · The paper itself

Abstract

Spermatogenic cells have been previously shown to be a major site of testicular proenkephalin gene expression. Using RNA gel-blot analysis of purified mouse and hamster germ cells and of testes from prepuberal and germ cell-deficient mutant mice, we now have demonstrated that, in addition to its previously described expression by somatic (Leydig) cells, the gene for a second opioid peptide precursor, pro-opiomelanocortin (POMC), is also expressed by spermatogenic cells. Of particular significance is the finding that the RNAs for proenkephalin and POMC are differentially regulated during spermatogenesis. Two forms of POMC RNA were detected in mouse testis, a larger component 675- to 750-nucleotides (nt) in size common to somatic and spermatogenic cells and a smaller 625-nt RNA found only in pachytene spermatocytes. Two distinct, cell-specific proenkephalin RNAs were also shown to be present in mouse testis: a 1700-nt transcript previously shown to be expressed by spermatogenic cells and a 1450-nt form associated with somatic cells. These data suggest that proenkephalin- and POMC-derived peptides are produced by both somatic cells and germ cells in the testis and in germ cells these two families of opioid peptides may function at different stages of spermatogenesis.

Indexed as

Gene Expression RegulationAnimalsCricetinaeEnkephalinsLeydig CellsMaleMiceMice, Mutant StrainsPoly APro-OpiomelanocortinProtein PrecursorsRatsRNARNA, MessengerSpermatidsSpermatocytesEnkephalinsPoly AproenkephalinPro-OpiomelanocortinProtein PrecursorsRNARNA, Messenger

Identifiers

PMID2441391
PMCPMC298929
OpenAlexW2012168576

What OpenQuestion holds

Textmetadata
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.