Evidence map›Paper›PMID 31649925›Full record

ArticleFrontiers in bioengineering and biotechnology2019

Oxygen Consumption Characteristics in 3D Constructs Depend on Cell Density.

Chiara Magliaro, Giorgio Mattei, Flavio Iacoangeli, Alessandro Corti, Vincenzo Piemonte, Arti Ahluwalia

Abstract read
In one paragraph

Article in Frontiers in bioengineering and biotechnology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

38 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Advances in vascularized organoids.Chinese medical journal · 2026
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  17. Three-DimensionalInternational journal of biological sciences · 2024
    Review
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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.

Chiara MagliaroResearch Center "E. Piaggio", University of Pisa, Pisa, Italy.
Giorgio MatteiDepartment of Information Engineering, University of Pisa, Pisa, Italy.
Flavio IacoangeliDepartment of Engineering, University "Campus Bio-medico" of Rome, Rome, Italy.
Alessandro CortiDepartment of Traslational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.
Vincenzo PiemonteDepartment of Engineering, University "Campus Bio-medico" of Rome, Rome, Italy.
Arti AhluwaliaResearch Center "E. Piaggio", University of Pisa, Pisa, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Oxygen is not only crucial for cell survival but also a determinant for cell fate and function. However, the supply of oxygen and other nutrients as well as the removal of toxic waste products often limit cell viability in 3-dimensional (3D) engineered tissues. The aim of this study was to determine the oxygen consumption characteristics of 3D constructs as a function of their cell density. The oxygen concentration was measured at the base of hepatocyte laden constructs and a tightly controlled experimental and analytical framework was used to reduce the system geometry to a single coordinate and enable the precise identification of initial and boundary conditions. Then dynamic process modeling was used to fit the measured oxygen vs. time profiles to a reaction and diffusion model. We show that oxygen consumption rates are well-described by Michaelis-Menten kinetics. However, the reaction parameters are not literature constants but depend on the cell density. Moreover, the average cellular oxygen consumption rate (or OCR) also varies with density. We discuss why the OCR of cells is often misinterpreted and erroneously reported, particularly in the case of 3D tissues and scaffolds.

Indexed as

3D cell culturediffusionMichaelis-Mentenoxygen consumption ratereactionscaffold

Identifiers

PMID31649925
PMCPMC6796794

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.