Evidence map›Paper›PMID 24009424›Full record

ArticleInternational journal of tryptophan research : IJTR2013

L-tryptophan metabolism in pregnant mice fed a high L-tryptophan diet and the effect on maternal, placental, and fetal growth.

Ai Tsuji, Chifumi Nakata, Mitsue Sano, Tsutomu Fukuwatari, Katsumi Shibata

Open access · goldAbstract read
In one paragraph

Article in International journal of tryptophan research : IJTR, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.5field-weighted citation impact, top 13% 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

17 citing papers in PubMed, 30 citations in OpenAlex.

  1. Gestational kynurenine metabolites mediate effects of pregnancy adiposity on child negative affect.Journal of child psychology and psychiatry, and allied disciplines · 2026
    Article
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  10. Gestational Factors throughout Fetal Neurodevelopment: The Serotonin Link.International journal of molecular sciences · 2020
    Review
  11. Review
  12. Comparative Metabonomic Investigations ofFrontiers in microbiology · 2019
    Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. The tryptophan utilization concept in pregnancy.Obstetrics & gynecology science · 2014
    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

5 authors at 1 institution in 1 country.

Ai TsujiDepartment of Nutrition, School of Human Cultures, the University of Shiga Prefecture, Hikone, Shiga 522-8533, Japan.
Chifumi Nakata
Mitsue Sano
Tsutomu Fukuwatari
Katsumi Shibata
University of Shiga Prefecture · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Excess L-tryptophan (L-Trp) in the diet decreases fetal body weight. However, the relationship between L-Trp concentration and its effects on maternal, placental, and fetal growth are not well-understood. We investigated the effects of excess L-Trp intake on maternal, placental, and fetal growth. Female mice were fed a 20% casein diet (control diet) or control diet plus 2% or 5% L-Trp during gestation. Pup weights did not differ between the control (L-Trp intake: 0.04 g/kg body weight (BW)/day) and 2% L-Trp groups (L-Trp intake: 3.3 g/kg BW/day), but were significantly lower in the 5% L-Trp group (L-Trp intake: 7.0 g/kg BW/day) than in the control and 2% L-Trp groups. These results show that less than 3.3 g/kg BW/day L-Trp intake in pregnant mice during gestation does not affect fetal growth or L-Trp homeostasis in the placenta or fetus.

Indexed as

L-tryptophanmouseplacentapregnancytoxicity

Identifiers

PMID24009424
PMCPMC3748091
OpenAlexW2034180051

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.