Evidence map›Paper›PMID 20371155›Full record

ArticleMedical hypotheses2010

Does a higher ratio of serum calcium to magnesium increase the risk for postmenopausal breast cancer?

Abe E Sahmoun, Brij B Singh

Abstract read
In one paragraph

Article in Medical hypotheses, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.4field-weighted citation impact, top 20% 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

21 citing papers in PubMed, 40 citations in OpenAlex.

  1. Article
  2. The evaluation of serum magnesium and calcium/magnesium ratio in patients with breast cancer receiving adjuvant chemotherapy.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2025
    Article
  3. Article
  4. The Role of TRPM7 in Oncogenesis.International journal of molecular sciences · 2024
    Review
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  15. Review
  16. Article
  17. Article
  18. KCNJ1 inhibits tumor proliferation and metastasis and is a prognostic factor in clear cell renal cell carcinoma.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2015
    Article
  19. TRPM7.Handbook of experimental pharmacology · 2014
    Review
  20. Inhibition of TRPM7 channels prevents proliferation and differentiation of human lung fibroblasts.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2013
    Article
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

2 authors at 1 institution in 1 country.

Abe E SahmounDepartment of Internal Medicine, University of North Dakota School of Medicine and Health Sciences, Fargo, ND 58102, USA. asahmoun@medicine.nodak.edu
Brij B Singh
University of North Dakota · US

Funding

TRPC1, Calcium, and Saliva SecretionR01DE017102 · NIDCR · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI Brij B Singh · 2006 to 2026
$7.5M
NIDCR NIH HHS R01 DE017102
6 · The paper itself

Abstract

Breast cancer is the most commonly diagnosed cancer among United States (US) women. Established risk factors explain only about 13% of breast cancer incidence among women in the US. Thus, the cause of most cases of breast cancer remains unknown. In postmenopausal women, serum calcium (Ca) and serum magnesium (Mg) play an important role in skeletal health, cell proliferation and cancer. Mg is essential for DNA duplication and repair and Mg deficiency favors DNA mutations leading to carcinogenesis. Dietary intake of Mg in the US is less than the recommended amount, and the deficit is more pronounced in older individuals where gastrointestinal and renal mechanisms for Mg conservation are not as efficient. Furthermore, healthy postmenopausal women are frequently recommended to take supplemental Ca, but not Mg and vitamin D to maintain bone and overall health. Most women with hormone sensitive breast cancer are recommended to take aromatase inhibitors, which causes bone loss and thus are generally prescribed Ca and vitamin D, but not Mg. Although the association between serum Ca and breast cancer risk remains controversial, we hypothesize that this may be because Mg levels have not been accounted for. Mg level directly influences transient receptor potential melastatin 7 (TRPM7) related Ca influx, calcium-adenosine triphosphatase (Ca-ATP) levels, and cell proliferation, and thereby could lead to cancer. Thus a high serum Ca/Mg ratio is more appropriate and alterations in this ratio could lead to increased development of new and recurrent breast cancer.

Indexed as

Breast NeoplasmsCalcium, DietaryCalcium-Transporting ATPasesCell ProliferationFemaleHumansMagnesiumPostmenopauseProtein Serine-Threonine KinasesRisk FactorsTRPM Cation ChannelsUnited StatesCalcium, DietaryCalcium-Transporting ATPasesMagnesiumProtein Serine-Threonine KinasesTRPM7 protein, humanTRPM Cation Channels

Identifiers

PMID20371155
PMCPMC3045769
OpenAlexW2003114375

What OpenQuestion holds

Textmetadata
LicenceTDM
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.