Evidence map›Paper›PMID 30740679›Full record

ArticleJournal of anatomy2019

Initial stages of development of the submandibular gland (human embryos at 5.5-8 weeks of development).

Luis Quirós-Terrón, Luis-Alfonso Arráez-Aybar, Jorge Murillo-González, Crótida De-la-Cuadra-Blanco, María-Concepción Martínez-Álvarez, José-Vicente Sanz-Casado, José-Ramón Mérida-Velasco

Open access · bronzeAbstract read
In one paragraph

Article in Journal of anatomy, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
0.9field-weighted citation impact, top 26% 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

10 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. The nerve center of organ engineering.Nature communications · 2025
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  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Cell signaling regulation in salivary gland development.Cellular and molecular life sciences : CMLS · 2021
    Review
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

7 authors at 1 institution in 1 country.

Luis Quirós-TerrónFaculty of Medicine, Department of Anatomy and Embryology, Complutense University of Madrid, Madrid, Spain.
Luis-Alfonso Arráez-AybarFaculty of Medicine, Department of Anatomy and Embryology, Complutense University of Madrid, Madrid, Spain.ORCID 0000-0001-7354-7347
Jorge Murillo-GonzálezFaculty of Medicine, Department of Anatomy and Embryology, Complutense University of Madrid, Madrid, Spain.
Crótida De-la-Cuadra-BlancoFaculty of Medicine, Department of Anatomy and Embryology, Complutense University of Madrid, Madrid, Spain.
María-Concepción Martínez-ÁlvarezFaculty of Odontology, Department of Anatomy and Embryology, Complutense University of Madrid, Madrid, Spain.
José-Vicente Sanz-CasadoFaculty of Medicine, Department of Anatomy and Embryology, Complutense University of Madrid, Madrid, Spain.
José-Ramón Mérida-VelascoFaculty of Medicine, Department of Anatomy and Embryology, Complutense University of Madrid, Madrid, Spain.
Universidad Complutense de Madrid · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this study was to determine the main stages of submandibular salivary gland development during the embryonic period in humans. In addition, we studied submandibular salivary gland development in rats on embryonic days 14-16 and expression in the submandibular salivary gland region with the monoclonal antibody HNK-1. Serial sections from 25 human embryos with a greatest length ranging from 10 to 31 mm (Carnegie stages 16-23; weeks 5.5-8 of development) and Wistar rats of embryonic days (E) 14-16 were analysed with light microscopy. Five stages of submandibular salivary gland development were identified. The prospective stage (1), between weeks 5.5 and early week 6, is characterized by a thickening of the epithelium of the medial paralingual groove in the floor of the mouth corresponding to the primordium of the submandibular salivary gland parenchyma. At this stage, the primordium of the parasympathetic ganglion lies below the lingual nerve. The primordium of the submandibular salivary gland parenchyma is observed in rats on E14 in the medial paralingual groove with mesenchymal cells, underlying the lingual nerve. These cells are HNK-1-positive, corresponding to the primordium of the parasympathetic ganglion. The bud stage (2), at the end of week 6 in humans and on E15 in rats, is characterized by the proliferation and invagination of the epithelial condensation, surrounded by an important condensation of the mesenchyme. The pseudoglandular stage (3) at week 6.5 is characterized by the beginning of the formation of lobes in the condensed mesenchyme. The canalicular stage (4), between week 7 and 7.5, is characterized by the appearance of a lumen in the proximal part of the submandibular duct. The innervation stage (5) occurs during week 8, with the innervation of the submandibular and interlobular ducts. Nervous branches arriving from the parasympathetic ganglion innervate the glandular parenchyma. Numerous blood vessels are observed nearby. Our results suggest that submandibular salivary gland development requires interactions among epithelium, mesenchyme, parasympathetic ganglion and blood vessels.

Indexed as

AnimalsBlood VesselsEmbryo, MammalianEpitheliumFemaleGanglia, ParasympatheticHumansMesodermProspective StudiesRatsRats, WistarSubmandibular Glanddevelopmentembryologyembryonic stagesubmandibular salivary gland

Identifiers

PMID30740679
PMCPMC6481420
OpenAlexW2914210318

What OpenQuestion holds

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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.