Evidence map›Paper›PMID 32840762›Full record

ArticleJournal of assisted reproduction and genetics2020

Leptin promotes proliferation of neonatal mouse stem/progenitor spermatogonia.

Nilgün Yersal, Sevil Köse, Utku Horzum, Sinan Özkavukcu, Kyle E Orwig, Petek Korkusuz

Open access · greenAbstract read
In one paragraph

Article in Journal of assisted reproduction and genetics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

12 citing papers in PubMed, 18 citations in OpenAlex.

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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

6 authors at 5 institutions in 2 countries.

Nilgün YersalDepartment of Histology and Embryology, Hacettepe University Faculty of Medicine, Ankara, Turkey.
Sevil KöseDepartment of Medical Biology, Atılım University Faculty of Medicine, Ankara, Turkey.
Utku HorzumDepartment of Basic Oncology, Hacettepe University Cancer Institute, Ankara, Turkey.
Sinan ÖzkavukcuCenter for Assisted Reproduction, Department of Obstetrics and Gynecology, Ankara University Faculty of Medicine, Ankara, Turkey.
Kyle E OrwigDepartment of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15213, USA.
Petek KorkusuzDepartment of Histology and Embryology, Hacettepe University Faculty of Medicine, Ankara, Turkey. petek@hacettepe.edu.tr.ORCID http://orcid.org/0000-0002-7553-3915
Hacettepe University · TRAnkara University · TRAtilim University · TRHacettepe University Hospital · TRUniversity of Pittsburgh · US

Funding

Improving Fertility Preservation in Boys with CancerR01HD092084 · NICHD · MAGEE-WOMEN'S RES INST AND FOUNDATION · PI ORWIG, KYLE EDWIN · 2017 to 2019
$1.1M
Eunice Kennedy Shriver National Institute of Child Health and Human Development HD092084.Hacettepe Üniversitesi THD-2017-13430NICHD NIH HHS R01 HD092084
6 · The paper itself

Abstract

purposeTo keep and increase spermatogonial stem cell number (SSC) is the only available option for pediatric cancer survivors to maintain fertility. Leptin is secreted by the epididymal white adipose tissue and has receptors on stem/progenitor spermatogonia. The purpose of this study is to demonstrate dose- and time-dependent proliferative effect of leptin on stem/progenitor spermatogonia cultures from prepubertal mice testes.

methodsCD90.2 (+) stem/progenitor spermatogonia were isolated from the C57BL/6 mouse testis on postnatal day 6 and placed in culture. The proliferative effect of leptin supplementation was assessed by colony formation (diameter and number), WST proliferation assays, and xCELLigence real-time cell analysis (RTCA) on days 3, 5, and 7 of culture. Expressions of p-ERK1/2, p-STAT3, total STAT3, and p-SHP2 levels were determined by western blot analysis.

resultsLeptin supplementation of 100 ng/ml increased the diameter (p = 0.001) and number (p = 0.01) of colonies in stem/progenitor spermatogonial cultures and caused higher proliferation by WST-1 (p = 0.009) compared with the control on day 7. The EC50 was calculated as 114 ng/ml for leptin by RTCA. Proliferative dose of leptin induced increased expression of p-ERK1/2 (p = 0.009) and p-STAT3 (p = 0.023) on stem/progenitor spermatogonia when compared with the untreated group.

conclusionThe results indicated that leptin supplementation exhibited a dose- and time-dependent proliferative effect on stem/progenitor spermatogonia that was associated with increased expression of ERK1/2 and STAT3 pathways while maintaining their undifferentiated state. This output presents a new agent that may help to expand the stem/progenitor spermatogonia pool from the neonatal testis in order to autotransplant after cancer treatment.

Indexed as

Adult Germline Stem CellsAnimalsAnimals, NewbornCell DifferentiationCell ProliferationHumansLeptinMiceStem CellsLeptinLeptinp-ERK1/2Proliferationp-STAT3Stem/progenitor spermatogonia

Identifiers

PMID32840762
PMCPMC7642194
OpenAlexW3081275638

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.