03067cam a2200349 a 4500 EG-GiCUC 20250223032847.0 211114s2021 ua dh f m 000 0 eng d EG-GiCUC eng EG-GiCUC eng Deposite Ph.D Cai01.12.02.Ph.D.2021.Ah.C Ahlam Mohamed Abdelaziz Mohamed Cardiprotective effect of pentoxify lline in ischemic heart mediated via blockage of immune checkpoints / Ahlam Mohamed Abdelaziz Mohamed ; Supervised Mohamed Ali Eldesouky , Ayman Elsayed Shafei Abouelaa , Mostafa Mahmoud Mohamed Elnakib التأثير الوقائى للبنتوكسيفيلين لمرض نقص تروية القلب عن طريق إحداث صمت فى نقاط التفتيش المناعية Cairo : Ahlam Mohamed Abdelaziz Mohamed , 2021 162 P. : charts , facsimiles ; 25cm Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Biochemistry The regulation by immune checkpoints is able to prevent excessive tissue damage caused by ischemia/reperfusion (I/R); therefore, the study aims to investigate the behavior of phosphoprotein associated with glycosphingolipid-enriched microdomains 1 (PAG1) mRNA, miR-1206 and small nucleolar RNA host gene 14 (SNHG14) during I/R and intake of pentoxifylline (PTX) as a protective drug.The relative expression level of PAG1/miR- 1206/SNHG14 was determined by qRT-PCR. Cardiac tissue levels of cytotoxic T-lymphocyte associated antigen 4 (CTLA4) and PAG1 protein expression were determined by ELISA technique. The regulatory T cells were achieved by the flow cytometry. The results indicated that the relative expression of SNHG14 was significantly up regulated in I/R, but suppressed in PTX treated groups with enhancement of the relative expression level of miR-1206. The gene and protein expression of PAG1 were down regulated with effective doses of PTX.The results showed that PTX dose between 30 and 40 mg/kg suppressed the CTLA4 development significantly.The mean of the regulatory T cell in PTX protective groups was significantly reduced at (p < 0.001) in a comparison with I/R group. Spearman{u2019}s correlation analysis revealed a significant negative correlation between SNHG14 and miR-1206, while a significant positive correlation between SNHG14 and PAG1 in I/R heart tissue. Based on the obtained results it is concluded that miR-1206 and SNHG14 may be used as biomarkers with perfect sensitivity and specificity in I/R. Further of PTX also reduced cardiac tissue damage Issued also as CD Ischemia reperfusion MiR-1206 Pentoxifylline Ayman Elsayed Shafei Abouelaa , Supervisor Mohamed Ali Eldesouky , Supervisor Mostafa Mahmoud Mohamed Elnakib , Supervisor http://172.23.153.220/th.pdf Nazla Revisor Shimaa Cataloger ddc TH 83130 83130 ddc 0 CUCL cl210 2024-02-11 Cai01.12.02.Ph.D.2021.Ah.C 01010110084734000 2023-09-22 00:00:00 TH ddc 0 CUCL cl2u8 2024-02-11 Cai01.12.02.Ph.D.2021.Ah.C 01020110084734000 2023-09-22 00:00:00 84734.CD CD