Evidence map›Paper›PMID 18178211›Full record

ArticleGeneral and comparative endocrinology2008

Molecular cloning, expression pattern, and immunocytochemical localization of a gonadotropin-releasing hormone-like molecule in the gastropod mollusk, Aplysia californica.

Lihong Zhang, Javier A Tello, Weimin Zhang, Pei-San Tsai

Open access · greenAbstract read
In one paragraph

Article in General and comparative endocrinology, 2008. 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
3.5field-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, 107 citations in OpenAlex.

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  16. Evolutionary origin of a functional gonadotropin in the pituitary of the most primitive vertebrate, hagfish.Proceedings of the National Academy of Sciences of the United States of America · 2010
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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

4 authors at 3 institutions in 3 countries.

Lihong ZhangSchool of Life Sciences, Zhongshan (Sun Yat-Sen) University, Guangzhou, PR China.
Javier A Tello
Weimin Zhang
Pei-San Tsai
Sun Yat-sen University · CNUniversity of Colorado Boulder · USUniversity of Victoria · CA

Funding

Fibroblast Growth Factor Regulation of Gonadotropin-Releasing Hormone NeuronsR01HD042634 · NICHD · UNIVERSITY OF COLORADO AT BOULDER · PI TSAI, PEI-SAN · 2004 to 2012
$1.8M
FGF Regulation of GnRH NeuronsR56HD042634 · NICHD · UNIVERSITY OF COLORADO · PI TSAI, PEI-SAN · 2008 to 2008
$254k
NICHD NIH HHS HD 042634NICHD NIH HHS R01 HD042634NICHD NIH HHS R56 HD042634
6 · The paper itself

Abstract

Successful reproduction in vertebrates depends upon the actions of gonadotropin-releasing hormone (GnRH). Despite the wide presence of GnRH in Phylum Chordata, GnRH has not been isolated in protostomes other than the common octopus. To provide information on the evolution of this critical hormone, we isolated the full-length cDNA of a GnRH-like molecule from the central nervous system of a gastropod mollusk, the sea hare Aplysia californica. The open reading frame of this cDNA encodes a protein of 147 amino acids. The molecular architecture of the deduced protein is highly homologous to that reported for the prepro-octopus GnRH (oct-GnRH) and consists of a putative signal peptide, a GnRH dodecapeptide, a downstream processing site, and a GnRH-associated peptide (GAP). The deduced amino acid sequence of the Aplysia GnRH (ap-GnRH) is QNYHFSNGWYAG and differs from oct-GnRH by only two amino acids. The transcript for ap-GnRH is widely expressed in the central nervous system (CNS), the ovotestis, and the atrial gland, an exocrine gland. Immunocytochemistry (ICC) using an antiserum against oct-GnRH detected immunoreactive neurons in all CNS ganglia examined, and the staining was abolished by the preadsorption of the antiserum with synthetic ap-GnRH. In sum, ap-GnRH sequence is the first gastropod GnRH-like molecule to be elucidated. Further, it represents one of the only two GnRH-like molecules found outside Phylum Chordata. These data refute the possibility that oct-GnRH arose singly in cephalopods by convergent evolution and provide valuable support for an ancient origin of GnRH during metazoan evolution.

Indexed as

Amino Acid SequenceAnimalsAplysiaCloning, MolecularDatabases, FactualDNA, ComplementaryDNA PrimersGene Expression RegulationGonadotropin-Releasing HormoneImmunohistochemistryMolecular Sequence DataNeuropeptidesPhylogenyReverse Transcriptase Polymerase Chain ReactionRNADNA, ComplementaryDNA PrimersGonadotropin-Releasing HormoneNeuropeptidesRNA

Identifiers

PMID18178211
PMCPMC2330098
OpenAlexW2006506216

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.