Evidence map›Paper›PMID 25517289›Full record

ArticlePublic health nutrition2015

Oral vitamin D supplementation has a lower bioavailability and reduces hypersecretion of parathyroid hormone and insulin resistance in obese Chinese males.

Ji-Chang Zhou, Yu-Mei Zhu, Zheng Chen, Jun-Luan Mo, Feng-Zhu Xie, Ying-Hong Wen, Ping Guo, Ji Peng, Jian Xu, Jun Wang and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Public health nutrition, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 4 pooled it
0.6field-weighted citation impact, top 31% 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

11 citing papers in PubMed, 4 syntheses or guidelines pooled it, 14 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Vitamin D Receptor Polymorphisms Associated with Susceptibility to Obesity: A Meta-Analysis.Medical science monitor : international medical journal of experimental and clinical research · 2019
    Pooled it
  4. Pooled it
  5. Trial
  6. Trial
  7. Trial
  8. Article
  9. Article
  10. TheNutrition & metabolism · 2019
    Article
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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

11 authors at 2 institutions in 1 country.

Ji-Chang Zhou1Molecular Biology Lab,Shenzhen Center for Chronic Disease Control (SZCCDC),Shenzhen,People's Republic of China.
Yu-Mei Zhu1Molecular Biology Lab,Shenzhen Center for Chronic Disease Control (SZCCDC),Shenzhen,People's Republic of China.
Zheng Chen1Molecular Biology Lab,Shenzhen Center for Chronic Disease Control (SZCCDC),Shenzhen,People's Republic of China.
Jun-Luan Mo1Molecular Biology Lab,Shenzhen Center for Chronic Disease Control (SZCCDC),Shenzhen,People's Republic of China.
Feng-Zhu Xie2Health Service Center of Shuiku Community,SZCCDC,Shenzhen,People's Republic of China.
Ying-Hong Wen3Outpatient Department,SZCCDC,Shenzhen,People's Republic of China.
Ping Guo2Health Service Center of Shuiku Community,SZCCDC,Shenzhen,People's Republic of China.
Ji Peng4Department of Chronic Disease Prevention,SZCCDC,Shenzhen,People's Republic of China.
Jian Xu5Department of Health and Chronic Disease Management,SZCCDC,2021 Buxin Road,Luohu District,Shenzhen 518020,People's Republic of China.
Jun Wang3Outpatient Department,SZCCDC,Shenzhen,People's Republic of China.
Xiao-Li Liu5Department of Health and Chronic Disease Management,SZCCDC,2021 Buxin Road,Luohu District,Shenzhen 518020,People's Republic of China.
Shenzhen Nanshan Center for Chronic Disease Control · CNShenzhen Chronic Disease Prevention Center · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo examine the vitamin D status, SNP of the vitamin D receptor gene (VDR) and the effects of vitamin D supplementation on parathyroid hormone and insulin secretion in adult males with obesity or normal weight in a subtropical Chinese city.

designAn intervention trial.

settingShenzhen City, Guangdong Province, China. SUBJECTS: From a cross-sectional survey conducted from June to July, eighty-two normal-weight and ninety-nine obese males (18-69 years) were screened to analyse their vitamin D status and for five SNP of VDR. From these individuals, in the same season of a different year, obese and normal-weight male volunteers (twenty-one per group) were included for an intervention trial with oral vitamin D supplementation at 1250 µg/week for 8 weeks.

resultsFor the survey, there was no significant difference (P>0·05) in baseline circulating 25-hydroxyvitamin D concentrations or in the percentages of participants in different categories of vitamin D status between the two groups. The VDR SNP, rs3782905, was significantly associated with obesity (P=0·043), but none of the examined SNP were correlated with serum 25-hydroxyvitamin D when adjusted for age, BMI and study group. After vitamin D supplementation, serum 25-hydroxyvitamin D concentration, hypersecretions of parathyroid hormone and insulin, and insulin resistance in the obese were changed beneficially (P<0·05); however, the increase in serum 25-hydroxyvitamin D was less than that of the normal-weight men.

conclusionsFor obese and normal-weight men of subtropical China, the summer baseline vitamin D status was similar. However, oral vitamin D supplementation revealed a decreased bioavailability of vitamin D in obese men and ameliorated their hypersecretion of parathyroid hormone and insulin resistance.

Indexed as

Dietary SupplementsInsulin ResistanceAdolescentAdultAgedAsian PeopleBiological AvailabilityBody Mass IndexChinaCross-Sectional StudiesDose-Response Relationship, DrugHumansLife StyleMaleMiddle AgedObesityParathyroid HormoneReceptors, CalcitriolVitamin DChinese maleInsulin resistanceObesityParathyroid hormoneVitamin D

Identifiers

PMID25517289
PMCPMC10271277
OpenAlexW1997397428

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.