Evaluation of some mirnas as osteoportic biomarkers in egyptian female patients / Suzan M.ismael; Under the Supervision by Professor Noha A.El-boghdady ,Professor Marwa I.Shabayak .

Thesis (M.Sc.)-cairo university, faculty of pharmacy, 2021.

Includes bibliographical references

Background and aim: Osteoporosis is a systemic skeletal disorder that increases bone fragility and the risk of fractures. Recent studies have shown that miRNAs possess a pivotal role in osteoporosis development. This study aimed to evaluate the expression profiles of sera miRNA-208a3p, miRNA-155-5p, and miRNA-637, to examine relation to osteoporosis and suggest the possible mechanisms of action to be used as innovative biomarkers for the diagnosis of osteoporosis among pre- and postmenopausal females. Subject and method: In this pilot study, the blood samples were collected from 140 women who were divided depending on DEXA results (T-score) as following; osteoporotic patients with T-score ≤ −2.5 and healthy controls with T-score ≥ −1. Then, each group was subdivided into pre- and postmenopausal females (each, n = 35). The expression profiles of the studied miRNAs were measured using real-time polymerase chain reaction (RT-PCR). Results: Serum miRNA-208a-3p was significantly upregulated, whereas miRNA-155-5p was markedly downregulated in the premenopausal patients compared to its respective controls. However, the miRNA-637 level showed a non-significant decrease in premenopausal patients than their controls. Moreover, the three studied miRNAs were significantly upregulated in the postmenopausal patients when compared to their respective controls, and premenopausal osteoporotic ones. Conclusion: Differential expression of these miRNAs suggests their association with osteoporosis pathogenesis and elucidate their promising roles in the diagnosis of osteoporosis

Text in English, abstracts in English and Arabic.