Evidence map›Paper›PMID 9617343›Full record

ArticleJapanese journal of cancer research : Gann1998

N-methyl-N-nitrosourea concentration-dependent, rather than total intake-dependent, induction of adenocarcinomas in the glandular stomach of BALB/c mice.

T Yamachika, H Nakanishi, K Inada, T Tsukamoto, N Shimizu, K Kobayashi, S Fukushima, M Tatematsu

Open access · bronzeAbstract read
In one paragraph

Article in Japanese journal of cancer research : Gann, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
0.4field-weighted citation impact, top 38% 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

28 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Molecules (Basel, Switzerland) · 2019
    Article
  13. Article
  14. Gastric Leptin and Tumorigenesis: Beyond Obesity.International journal of molecular sciences · 2019
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Effect of N-Methyl-N-Nitrosourea onJournal of cancer prevention · 2016
    Article
  20. Mouse models for gastric cancer: Matching models to biological questions.Journal of gastroenterology and hepatology · 2016
    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

8 authors at 2 institutions in 1 country.

T YamachikaLaboratory of Pathology, Aichi Cancer Center Research Institute, Nagoya.
H Nakanishi
K Inada
T Tsukamoto
N Shimizu
K Kobayashi
S Fukushima
M Tatematsu
Aichi Cancer Center · JPOsaka City University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The influence of the level of carcinogen exposure on histopathological types and cellular differentiation of the induced tumors was examined in 100 male BALB/c mice given N-methyl-N-nitrosourea (MNU) in their drinking water at 240 ppm on alternate weeks (total exposure: five weeks) (groups 1), at 120 ppm similarly (total exposure: ten weeks) (group 2), at 60 ppm for 20 weeks continuously (group 3), or at 30 ppm for 40 weeks continuously (group 4). Forty-three differentiated and 17 undifferentiated type adenocarcinomas were induced. Glandular stomach carcinomas and undifferentiated type lesions were more common in mice treated with a high concentration of MNU for a short period than with a low concentration of MNU for a long period, even though total measured intake of MNU was smaller (P < 0.01). All the induced glandular stomach carcinomas, independent of the treatment schedule, consisted entirely of gastric phenotype cells. In conclusion, the induction of glandular stomach cancers and the proportion of undifferentiated type lesion depend not on the total quantity, but rather on the concentration of the carcinogen, while the phenotypic expression of tumor cells in not affected by the differences in the administration protocol.

Indexed as

AdenocarcinomaAnimalsBody WeightCarcinogenicity TestsCarcinogensDrug Administration ScheduleMaleMethylnitrosoureaMiceMice, Inbred BALB CStomach NeoplasmsSurvival RateCarcinogensMethylnitrosourea

Identifiers

PMID9617343
PMCPMC5921815
OpenAlexW2002569002

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.