DICER and DROSHA gene expression in peripheral mononuclear blood cells from rheumatoid arthritis patients under methotrexate therapy


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Abstract

The aim of this research was studying the level of DROSHA and DICER genes expression in peripheral mononuclear blood cells (PBMC) in rheumatoid arthritis (RA) patients under methotrexate therapy. Materials and methods. 82 people (from 45 to 70 years) enrolled in this study were divided into 3 groups (the first one - healthy donors (n=33 median age 49.93±1.87); the second group - rheumatoid arthritis patients without any therapy (n=15; median age 57.28±15.18) and the third group (n=34; median age 60.88±9.02) - rheumatoid arthritis patients who treated at least 4 weeks with methotrexate therapy (10-20 mg/week). The DICER and DROSHA genes expression level was determined by real-time PCR. Results. The number of DICER gene transcripts in PBMC in rheumatoid arthritis patients without therapy as in RA patients treated with methotrexate was reduced in comparison with the healthy donors (p<0.001 and p>0.05 respectively). The level of DROSHA gene expression in PBMC was not significantly different in all groups enrolled in this study (p>0.05). Conclusion. Our findings suggest that that the DICER gene expression level in perifheral mononuclear blood cells decreased with the development of rheumatoid arthritis. Methotrexate doesn’t influence on the mRNA level of this gene.

About the authors

I E Malysheva

Institute of Biology of the Karelian Research Centre of the Russian Academy of Sciences, laboratory of genetics

Email: i.e.malysheva@yandex.ru
с.н.с. лаб. генетики ИБ КарНЦ РАН Petrozavodsk, Russia

L V Topchieva

Institute of Biology of the Karelian Research Centre of the Russian Academy of Sciences, laboratory of genetics

в.н.с. лаб. генетики ИБ КарНЦ РАН Petrozavodsk, Russia

O V Balan

Institute of Biology of the Karelian Research Centre of the Russian Academy of Sciences, laboratory of genetics

с.н.с. лаб. генетики ИБ КарНЦ РАН Petrozavodsk, Russia

I M Marusenko

Federal State Budgetary Educational Institution of Higher Education «Petrozavodsk State University»; Department of Hospital Therapy

д.м.н., проф., каф. госпитальной терапии Петрозаводского государственного университета Petrozavodsk, Russia

O Y Barysheva

Federal State Budgetary Educational Institution of Higher Education «Petrozavodsk State University»; Department of Hospital Therapy

д.м.н., проф., каф. госпитальной терапии Петрозаводского государственного университета Petrozavodsk, Russia

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