Evidence map›Paper›PMID 32285469›Full record

ArticleJournal of anatomy2020

The bronchial tree of the human embryo: an analysis of variations in the bronchial segments.

Sena Fujii, Taiga Muranaka, Jun Matsubayashi, Shigehito Yamada, Akio Yoneyama, Tetsuya Takakuwa

Open access · bronzeAbstract read
In one paragraph

Article in Journal of anatomy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.8field-weighted citation impact, top 12% 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

15 citing papers in PubMed, 25 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 2 institutions in 1 country.

Sena FujiiHuman Health Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Taiga MuranakaHuman Health Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Jun MatsubayashiHuman Health Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Shigehito YamadaHuman Health Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan.ORCID 0000-0002-8194-6927
Akio YoneyamaSAGA Light Source, Saga, Japan.
Tetsuya TakakuwaHuman Health Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan.ORCID 0000-0002-9660-9384
Kyoto University · JPSAGA Light Source · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A classical study has revealed the general growth of the bronchial tree and its variations up to Carnegie stage (CS) 19. In the present study, we extended the morphological analysis CS by CS until the end of the embryonic period (CS23). A total of 48 samples between CS15 and CS23 belonging to the Kyoto Collection were used to acquire imaging data by performing phase-contrast X-ray computed tomography. Three-dimensionally reconstructed bronchial trees revealed the timeline of morphogenesis during the embryonic period. Structures of the trachea and lobar bronchus showed no individual difference during the analyzed stages. The right superior lobar bronchus was formed after the generation of both the right middle lobar bronchus and the left superior lobar bronchus. The speed of formation of the segmental bronchi, sub-segmental bronchi, and further generation seemed to vary among individual samples. The distribution of the end-branch generation among five lobes was significantly different. The median branching generation value in the right middle lobe was significantly low compared with that of the other four lobes, whereas that of the right inferior lobe was significantly larger than that of both the right and left superior lobes. Variations found between CS20 and CS23 were all described in the human adult lung, indicating that variation in the bronchial tree may well arise during the embryonic period and continue throughout life. The data provided may contribute to a better understanding of bronchial tree formation during the human embryonic period.

Indexed as

BronchiHumansImage Processing, Computer-AssistedLungTomography, X-Ray ComputedTrachea

Identifiers

PMID32285469
PMCPMC7369191
OpenAlexW3015812966

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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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.