Evidence map›Paper›PMID 34931496›Full record

ArticleJournal of Korean medical science2021

Effects of Lipopolysaccharide on Oligodendrocyte Differentiation at Different Developmental Stages: an In Vitro Study.

Ja-Hye Ahn, Hyun Ju Lee, Kyeongmi Lee, Jean Lim, Jae Kyoon Hwang, Chang-Ryul Kim, Hyun A Kim, Han-Suk Kim, Hyun-Kyung Park

Open access · goldAbstract read
In one paragraph

Article in Journal of Korean medical science, 2021. 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
1.0field-weighted citation impact, top 20% 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, 8 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

9 authors at 4 institutions in 2 countries.

Ja-Hye Ahn *Department of Pediatrics, Hanyang University College of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0003-3907-3744
Hyun Ju Lee *Department of Pediatrics, Hanyang University College of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0002-9110-2963
Kyeongmi LeeDepartment of Pediatrics, Hanyang University College of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0001-7525-0897
Jean LimKangwon National University College of Veterinary Medicine, Chuncheon, Korea.ORCID https://orcid.org/0000-0002-3596-7743
Jae Kyoon HwangDepartment of Pediatrics, Hanyang University Guri Hospital, Guri, Korea.ORCID https://orcid.org/0000-0003-0312-567X
Chang-Ryul KimDepartment of Pediatrics, Hanyang University Guri Hospital, Guri, Korea.ORCID https://orcid.org/0000-0003-3008-4260
Hyun A KimDepartment of Child Psychotherapy, Hanyang University Graduate School of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0002-4532-2885
Han-Suk KimDepartment of Pediatrics, Seoul University College of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0002-9777-3231
Hyun-Kyung ParkDepartment of Pediatrics, Hanyang University College of Medicine, Seoul, Korea. neopark@hanyang.ac.kr.ORCID https://orcid.org/0000-0001-5956-9208
Hanyang University · KRHanyang University Guri Hospital · KRUniversity of Seoul · KRKangwon National University · KR

Funding

National Research Foundation of Korea M3E5D9080787National Research Foundation of Korea NRF-2020-R1F1A1048529
6 · The paper itself

Abstract

backgroundLipopolysaccharide (LPS) exerts cytotoxic effects on brain cells, especially on those belonging to the oligodendrocyte lineage, in preterm infants. The susceptibility of oligodendrocyte lineage cells to LPS-induced inflammation is dependent on the developmental stage. This study aimed to investigate the effect of LPS on oligodendrocyte lineage cells at different developmental stages in a microglial cell and oligodendrocyte co-culture model.

methodsThe primary cultures of oligodendrocytes and microglia cells were prepared from the forebrains of 2-day-old Sprague-Dawley rats. The oligodendrocyte progenitor cells (OPCs) co-cultured with microglial cells were treated with 0 (control), 0.01, 0.1, and 1 µg/mL LPS at the D3 stage to determine the dose of LPS that impairs oligodendrocyte differentiation. The co-culture was treated with 0.01 µg/mL LPS, which was the lowest dose that did not impair oligodendrocyte differentiation, at the developmental stages D1 (early LPS group), D3 (late LPS group), or D1 and D3 (double LPS group). On day 7 of differentiation, oligodendrocytes were subjected to neural glial antigen 2 (NG2) and myelin basic protein (MBP) immunostaining to examine the number of OPCs and mature oligodendrocytes, respectively.

resultsLPS dose-dependently decreased the proportion of mature oligodendrocytes (MBP+ cells) relative to the total number of cells. The number of MBP+ cells in the early LPS group was significantly lower than that in the late LPS group. Compared with those in the control group, the MBP+ cell numbers were significantly lower and the NG2+ cell numbers were significantly higher in the double LPS group, which exhibited impaired oligodendrocyte lineage cell development, on day 7 of differentiation.

conclusionRepetitive LPS stimulation during development significantly inhibited brain cell development by impairing oligodendrocyte differentiation. In contrast, brain cell development was not affected in the late LPS group. These findings suggest that inflammation at the early developmental stage of oligodendrocytes increases the susceptibility of the preterm brain to inflammation-induced injury.

Indexed as

AnimalsCell DifferentiationCell LineageCells, CulturedCoculture TechniquesLipopolysaccharidesMicrogliaOligodendrogliaRatsRats, Sprague-DawleyLipopolysaccharidesLipopolysaccharideMicrogliaOligodendrocytePeriventricular LeukomalaciaPreterm

Identifiers

PMID34931496
PMCPMC8688345
OpenAlexW3216127314

What OpenQuestion holds

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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.