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040 _aEG-GiCUC
_beng
_cEG-GiCUC
041 0 _aeng
049 _aDeposite
097 _aPh.D
099 _aCai01.11.19.Ph.D.2019.Sa.S
100 0 _aSabrin Mohamed Mohamed Abdelhamed Elkashef
245 1 0 _aSerum microRNA-21 and microRNA-155 as biomarkers for bronchial asthma /
_cSabrin Mohamed Mohamed Abdelhamed Elkashef ; Supervised Sohair Elattar Ahmad , Marwa Salah Mostafa , Youssef Mohamed Amin Soliman
246 1 5 _aالحمض النووى الريبوزى المصغر 21 و الحمض النووى الريبوزى المصغر 155 بمصل الدم كمؤشرات حيوية فى الربو الشعبى
260 _aCairo :
_bSabrin Mohamed Mohamed Abdelhamed Elkashef ,
_c2019
300 _a119 P. :
_bcharts , facsimiles ;
_c25cm
502 _aThesis (Ph.D.) - Cairo University - Faculty of Medicine - Department of Microbiology and Immunology
520 _aBronchial asthma is an airway chronic disease characterized by Th2 inflammatory response and tissue remodeling after exposure to inhaled allergens. MicroRNAs (miRNAs) are short non-coding RNAs that are important regulators of gene expression of different immunological molecules. However, the role of miRNAs, specifically miRNA-21 and miRNA-155, in the regulation of allergic airway inflammation is unexplored. The aim of this study was to compare the serum expression levels of miRNA-21 and miRNA-155 in asthmatic patients with that of healthy controls and to correlate their levels with serum IL-4 levels. The study was conducted on 30 asthmatic patients and 30 healthy individuals who served as the control group. The expression levels of miRNA-21 and miRNA-155 were evaluated in the serum of both groups by quantitative reverse transcription PCR while serum levels of IL-4 were determined using the ELISA technique. Asthmatic patients showed significantly higher serum miRNA-21 (P < 0.001) and miRNA-155 (P < 0.001) expression levels and higher serum IL-4 levels (P < 0.001) compared to the controls. There was a statistically significant positive correlation between the expression levels miRNA-21 and IL4 serum levels in the asthmatic patients (rs = 0.609, P = < 0.001). However, no correlation was detected between the expression levels miRNA-155 and each of IL-4 (rs = 0.278, P = 0.136) and miRNA-21 (rs = 0.188, P = 0.321). MiRNA-21 and miRNA-155 are potential non-invasive biomarkers in asthma diagnosis and response to therapy. The effect of miRNA-21 and miRNA-155 on Th2 response and cytokine production can be mediated by different pathways. Further studies are required to investigate the role of miRNA-21 and miRNA-155 in the pathogenesis of different asthma phenotypes
530 _aIssued also as CD
653 4 _aAsthma
653 4 _aMiRNA-21
653 4 _aPathogenesis of asthma
700 0 _aMarwa Salah Mostafa ,
_eSupervisor
700 0 _aSohair Elattar Ahmad ,
_eSupervisor
700 0 _aYoussef Mohamed Amin Soliman ,
_eSupervisor
856 _uhttp://172.23.153.220/th.pdf
905 _aNazla
_eRevisor
905 _aSamia
_eCataloger
942 _2ddc
_cTH
999 _c75614
_d75614