PMID- 36233781 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20221019 IS - 2077-0383 (Print) IS - 2077-0383 (Electronic) IS - 2077-0383 (Linking) VI - 11 IP - 19 DP - 2022 Oct 7 TI - Association Study of the SLC1A2 (rs4354668), SLC6A9 (rs2486001), and SLC6A5 (rs2000959) Polymorphisms in Major Depressive Disorder. LID - 10.3390/jcm11195914 [doi] LID - 5914 AB - The membrane excitatory amino acid transporter 2 (EAAT2), encoded by SLC1A2, is responsible for the uptake and redistribution of synaptic glutamate. Glycine modulates excitatory neurotransmission. The clearance of synaptic glycine is performed by glycine transporters encoded by SLC6A9 and SLC6A5. Higher synaptic glycine and glutamate levels could enhance the activation of NMDA receptors and counteract the hypofunction of glutamate neurotransmission described in major depressive disorder (MDD). The aim of the study was to assess whether polymorphisms of SCL1A2 (rs4354668), SCL6A5 (rs2000959), and SCL6A9 (rs2486001) play a role in the development of MDD and its clinical picture in the Polish population. The study group consisted of 161 unrelated Caucasian patients with MDD and 462 healthy unrelated individuals for control. Polymorphisms were genotyped with PCR-RLFP assay. We observed that the frequency of genotype CC and allele C of the SLC1A2 polymorphism rs4354668 was twice as high in the MDD group as in control. Such differences were not detected in SLC6A5 and SLC6A9 polymorphisms. No statistically significant association of the studied SNPs (Single Nucleotide Polymorphisms) on clinical variables of the MDD was observed. The current study indicates an association of polymorphism rs4354668 in SCL1A2 with depression occurrence in the Polish population; however, further studies with larger samples should be performed to clarify these findings. FAU - Rodek, Patryk AU - Rodek P AUID- ORCID: 0000-0003-1800-6745 AD - Department and Clinic of Adult Psychiatry, Faculty of Medical Sciences, Medical University of Silesia, Ziolowa 45, 40-635 Katowice, Poland. FAU - Kowalczyk, Malgorzata AU - Kowalczyk M AD - Department of Medical Genetics, Faculty of Pharmaceutical Sciences, Medical University of Silesia, Jednosci 8, 41-200 Sosnowiec, Poland. FAU - Kowalski, Jan AU - Kowalski J AD - Department of Medical Genetics, Faculty of Pharmaceutical Sciences, Medical University of Silesia, Jednosci 8, 41-200 Sosnowiec, Poland. FAU - Owczarek, Aleksander AU - Owczarek A AUID- ORCID: 0000-0003-1179-6932 AD - Health Promotion and Obesity Management Unit, Department of Pathophysiology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Medykow 15, 40-752 Katowice, Poland. FAU - Choreza, Piotr AU - Choreza P AD - Department of Statistics, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, 41-200 Katowice, Poland. FAU - Kucia, Krzysztof AU - Kucia K AUID- ORCID: 0000-0001-5618-2833 AD - Department and Clinic of Adult Psychiatry, Faculty of Medical Sciences, Medical University of Silesia, Ziolowa 45, 40-635 Katowice, Poland. LA - eng GR - KNW-1-019/N/5/0/Medical University of Silesia/ PT - Journal Article DEP - 20221007 PL - Switzerland TA - J Clin Med JT - Journal of clinical medicine JID - 101606588 PMC - PMC9571074 OTO - NOTNLM OT - MDD OT - depression OT - excitatory amino acid transporter 2 OT - glutamate system OT - glycine transporter 1 OT - glycine transporter 2 OT - polymorphism COIS- The authors declare no conflict of interest. EDAT- 2022/10/15 06:00 MHDA- 2022/10/15 06:01 PMCR- 2022/10/07 CRDT- 2022/10/14 02:18 PHST- 2022/06/30 00:00 [received] PHST- 2022/08/15 00:00 [revised] PHST- 2022/10/04 00:00 [accepted] PHST- 2022/10/14 02:18 [entrez] PHST- 2022/10/15 06:00 [pubmed] PHST- 2022/10/15 06:01 [medline] PHST- 2022/10/07 00:00 [pmc-release] AID - jcm11195914 [pii] AID - jcm-11-05914 [pii] AID - 10.3390/jcm11195914 [doi] PST - epublish SO - J Clin Med. 2022 Oct 7;11(19):5914. doi: 10.3390/jcm11195914.