Evidence map›Paper›PMID 27166632›Full record

ArticleLung2016

The Association of Brain-Derived Neurotrophic Factor Gene Polymorphism with Obstructive Sleep Apnea Syndrome and Obesity.

Mehmet Yüksekkaya, Nuri Tutar, Hakan Büyükoğlan, Munis Dündar, İnsu Yılmaz, İnci Gülmez, Fatma Sema Oymak, Burhan Balta, Keziban Korkmaz, Ramazan Demir

Abstract read
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In one paragraph

Article in Lung, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.6field-weighted citation impact, top 29% 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, 6 citations in OpenAlex.

  1. Review
  2. Evaluation of clinical and genetic factors in obstructive sleep apnoea.Acta otorhinolaryngologica Italica : organo ufficiale della Societa italiana di otorinolaringologia e chirurgia cervico-facciale · 2023
    Article
  3. Article
  4. Article
  5. Post-Traumatic Sleep-Wake Disorders.Current neurology and neuroscience reports · 2017
    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

10 authors at 1 institution in 1 country.

Mehmet YüksekkayaDepartment of Pulmonary Medicine, School of Medicine, Erciyes University, Kayseri, 38038, Turkey.
Nuri TutarDepartment of Pulmonary Medicine, School of Medicine, Erciyes University, Kayseri, 38038, Turkey. drnuritutar@gmail.com.
Hakan BüyükoğlanDepartment of Pulmonary Medicine, School of Medicine, Erciyes University, Kayseri, 38038, Turkey.
Munis DündarDepartment of Medical Genetics, School of Medicine, Erciyes University, Kayseri, Turkey.
İnsu YılmazDepartment of Pulmonary Medicine, School of Medicine, Erciyes University, Kayseri, 38038, Turkey.
İnci GülmezDepartment of Pulmonary Medicine, School of Medicine, Erciyes University, Kayseri, 38038, Turkey.
Fatma Sema OymakDepartment of Pulmonary Medicine, School of Medicine, Erciyes University, Kayseri, 38038, Turkey.
Burhan BaltaDepartment of Medical Genetics, School of Medicine, Erciyes University, Kayseri, Turkey.
Keziban KorkmazBetül-Ziya Eren Genome and Stem Cell Center, Erciyes University, Kayseri, Turkey.
Ramazan DemirDepartment of Pulmonary Medicine, School of Medicine, Erciyes University, Kayseri, 38038, Turkey.
Erciyes University · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundObesity represents a major risk factor for Obstructive Sleep Apnea Syndrome (OSAS). Brain-derived neurotrophic factor (BDNF) affects the mechanisms that regulate weight, eating behavior, and metabolism. This project aims to investigate the possible association of BDNF gene polymorphism with obesity and OSAS, and to contribute knowledge to the understanding of the pathophysiology of OSAS.

methodsThe subjects included in this study were selected among the individuals who were hospitalized in the Erciyes University Medical School Chest Diseases Sleep Medicine Laboratory. Subjects were divided into four groups based on the presence of OSAS and/or obesity. Group 1 included OSAS+ obesity+ patients, Group 2 included OSAS+ obesity- patients, Group 3 included OSAS- obesity+ patients, and Group 4 included OSAS- obesity- patients. The targeted patient number per each study group was 45, but only 32 patients could be enrolled into Group 3.

resultsOut of a total number of 167 subjects, 117 (70.1 %) had BDNF 196G/G, 48 (28.7 %) had BDNF 196G/A, and 2 (1.2 %) had BDNF 196A/A genotype. Of 48 subjects having BDNF 196G/A genotype, 32 (66.6 %) were obese, and 16 (33.3 %) were non-obese. Out of 90 subjects with OSAS, 64 (71.1 %) had BDNF 196G/G, and 25 (27.8 %) had BDNF 196G/A genotype. Out of 77 subjects without OSAS, BDNF 196G/G, and BDNF 196G/A genotypes were detected in 53 (68.8 %) and 23 (29.9 %) subjects, respectively. A statistically significant difference was demonstrated between the four study groups in terms of BDNF rs6265 polymorphism (p = 0.013). This difference was attributed to OSAS+ obesity- Group, in which BDNF 196G/G genotype was more common and BDNF 196G/A polymorphism was less common than the patients in other groups.

conclusionIn conclusion, BDNF 196G/A genotype was found to be more frequent among obese patients compared to the non-obese individuals, but it was not significantly related to OSAS in the present study. BDNF196G/G genotype was more common and BDNF 196G/A polymorphism was less common among OSAS+ obesity- subjects compared to the other study groups.

Indexed as

AdultBody Mass IndexBrain-Derived Neurotrophic FactorCholesterol, HDLCholesterol, LDLFemaleGenotypeHumansMaleMiddle AgedObesityPolymorphism, Single NucleotidePolysomnographySeverity of Illness IndexSleep Apnea, ObstructiveTriglyceridesBrain-Derived Neurotrophic FactorCholesterol, HDLCholesterol, LDLTriglyceridesBDNFNeurotrophinsObesityOSASPolymorphism

Identifiers

PMID27166632
OpenAlexW2372099942

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.