| Title |
Tumor necrosis factor-α and -β genetic polymorphisms as a risk factor in Saudi patients with schizophrenia
|
|---|---|
| Published in |
Neuropsychiatric Disease and Treatment, April 2017
|
| DOI | 10.2147/ndt.s131144 |
| Pubmed ID | |
| Authors |
Saeed Kadasah, Misbahul Arfin, Sadaf Rizvi, Mohammed Al-Asmari, Abdulrahman Al-Asmari |
| Abstract |
Schizophrenia is one of the most common devastating psychiatric disorders that negatively affects the quality of life and psychosocial functions. Its etiology involves the interplay of complex polygenic influences and environmental risk factors. Inflammatory markers are well-known etiological factors for psychiatric disorders, including schizophrenia. The aim of this study was to investigate the association of proinflammatory cytokine genes, tumor necrosis factor (TNF)-α (-308G/A) and TNF-β (+252A/G) polymorphisms with schizophrenia susceptibility. TNF-α and TNF-β genes were amplified using amplification refractory mutation system primers in 180 schizophrenia patients and 200 healthy matched controls recruited from the Psychiatry Clinic of Prince Sultan Military Medical City, Riyadh. The frequencies of alleles and genotypes of TNF-α (-308G/A) and TNF-β (+252A/G) polymorphisms in patients were compared with those in controls. The frequencies of TNF-α (-308) allele A and genotype GA were significantly higher, while those of allele G and genotype GG were lower in schizophrenia patients as compared to controls, indicating that genotype GA and allele A of TNF-α (-308G/A) may increase susceptibility to schizophrenia, while genotype GG and allele G may reduce it. On the other hand, the distribution of alleles and genotypes of TNF-β (+252A/G) polymorphism does not differ significantly in patients from controls; however, the frequency of genotype GG of TNF-β (+252A/G) was significantly higher in male patients than in female patients. The distribution of TNF-α (-308G/A) and TNF-β (+252A/G) polymorphisms was almost similar in schizophrenia patients with negative or positive symptoms. TNF-α (-308G/A) and TNF-β (+252G/A) polymorphisms may increase the susceptibility to schizophrenia in Saudi patients and could be a potential risk factor for its etiopathogenesis. However, further studies are warranted involving a larger sample size to strengthen our findings. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 30 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 3% |
| Unknown | 29 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Doctoral Student | 5 | 17% |
| Student > Bachelor | 4 | 13% |
| Student > Master | 3 | 10% |
| Researcher | 3 | 10% |
| Student > Ph. D. Student | 2 | 7% |
| Other | 4 | 13% |
| Unknown | 9 | 30% |
| Readers by discipline | Count | As % |
|---|---|---|
| Psychology | 4 | 13% |
| Neuroscience | 4 | 13% |
| Biochemistry, Genetics and Molecular Biology | 3 | 10% |
| Agricultural and Biological Sciences | 2 | 7% |
| Medicine and Dentistry | 2 | 7% |
| Other | 4 | 13% |
| Unknown | 11 | 37% |
Attention Score in Context
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#20,660,571
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Outputs of similar age from Neuropsychiatric Disease and Treatment
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