Evidence map›Paper›PMID 27293416›Full record

ArticleDementia and geriatric cognitive disorders extra

Profile of the Paraoxonase 1 (PON1) Gene 192Q/R Polymorphism and Clinical Associations among Older Singaporean Chinese with Alzheimer's and Mixed Dementia.

Dennis C C Seow, Qi Gao, Philip Yap, Jia Min Gan, Hui Ling Chionh, Su Chi Lim, Lei Feng, Tze Pin Ng

Open access · goldAbstract read
In one paragraph

Article in Dementia and geriatric cognitive disorders extra. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 30% 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

5 citing papers in PubMed, 1 synthesis or guideline pooled it, 8 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Paraoxonase Role in Human Neurodegenerative Diseases.Antioxidants (Basel, Switzerland) · 2020
    Review
  4. Article
  5. 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

8 authors at 4 institutions in 2 countries.

Dennis C C SeowGeriatric Medicine, Singapore General Hospital, SingHealth, Singapore.
Qi GaoGerontological Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Psychological Medicine, National University Health System, Singapore.
Philip YapGeriatric Medicine, Khoo Teck Puat Hospital, Alexandra Health, Singapore.
Jia Min GanInstitute of Medical Biology, ASTAR/Singapore OncoGenome Laboratory, Singapore.
Hui Ling ChionhNursing, Khoo Teck Puat Hospital, Alexandra Health, Singapore.
Su Chi LimEndocrinology, Khoo Teck Puat Hospital, Alexandra Health, Singapore.
Lei FengGerontological Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Psychological Medicine, National University Health System, Singapore.
Tze Pin NgGerontological Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Psychological Medicine, National University Health System, Singapore.
Khoo Teck Puat Hospital · SGNational University of Singapore · SGAgency for Science, Technology and Research · SGSingHealth · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo examine the prevalence of the Paraoxonase1 (PON1) gene 192Q/R polymorphism amongst Singaporean Chinese with Alzheimer's disease (AD) and mixed dementia and possible clinical associations.

methodsWe examined the presence of the PON1 192Q/R polymorphism together with cognitive status, functional status and neuropsychiatric symptoms among 186 older Singaporean Chinese with AD (n = 109) and mixed dementia (n = 77).

resultsThe R allele predominated in 67% of the AD patients and 63.1% of the patients with mixed dementia. Within the mixed dementia subgroup, the R allele was significantly associated with a higher BADLS score, NPI-Q scores and CDR scores.

conclusionAmong older Singaporean Chinese with AD and mixed dementia, the R allele was predominant. In particular, within the mixed dementia subgroup, the R allele carrier status was associated with poorer functional status, greater presence of neuropsychiatric symptoms and a more severe stage of dementia. Further studies should be conducted.

Indexed as

Alzheimer's diseaseMixed dementiaNeuropsychiatric symptomsParaoxonase 1Singaporean Chinese elderly

Identifiers

PMID27293416
PMCPMC4899677
OpenAlexW2295747993

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.