The Department of life sciences at the Faculty of science at the University of Mosul discussed the master’s thesis tagged “determining the antibacterial effectiveness of some natural substances against the most common bacteria causing middle ear infections”, submitted by student Ahed Nawaf Khalaf. The message dealt with the study of the antibacterial effectiveness of some natural substances against the most common bacterial species causing acute and chronic otitis media in Mosul, with the assessment of their resistance patterns to antibiotics and the spread of beta-lactamase enzymes, as well as the possibility of using some natural substances, in particular NAC and moringa seed extract aqueous, in inhibiting bacteria and enhancing the effectiveness of antibiotics. The main results of the study: The results showed a higher percentage of cases of chronic otitis media compared to acute ones, and the bacterium Pseudomonas aeruginosa leads the isolated bacterial species. It also revealed the prevalence of multiple antibiotic resistance (MDR) by 79%, and the high prevalence of ESBL and AMPC enzymes by 81% and 79%, respectively, compared to 5% for the MBL enzyme. With regard to the tested natural substances, NAC showed the widest inhibitory efficacy against bacterial isolates, while the effect of the aqueous extract of moringa seeds and black seed oil was limited to some strains, quinoa extracts and alcoholic extracts did not show inhibitory efficacy within the tested concentrations. NAC also recorded the lowest values of the minimum inhibitory concentration (MIC), ranging from 25-100 mg/ml, followed by an aqueous moringa seed extract in the range of 50-200 mg/ml, the results showed the ability of some of these substances to enhance the effectiveness of certain antibiotics and inhibit beta-lactamase enzymes in a number of bacterial isolates. The study highlights the importance of shedding light on the resistance of bacteria causing otitis media to antibiotics, and exploring the potential of some natural substances as promising supporting agents that deserve further studies to verify their effectiveness, safety and possible future use in therapeutic applications. The study is also related to a number of Sustainable Development Goals, in particular the third goal on good health and well-being, the fourth goal on quality education, the ninth goal on industry and innovation, and the twelfth goal on responsible consumption and production. The discussion Committee was chaired by Dr. Esraa Ghanem Hazem Mohammed, and the membership of assistant professor Dr. OS Ibrahim Suleiman, teacher Dr. Zahra Khairuddin Mohieddin, and under the supervision and membership of assistant professor Dr. Shaker Ghazi Jarjis. We wish our dear students continued success and success, and achieve more excellence and excellence in their scientific and research career, and continue giving and creativity to contribute to community service and raise the name of our college and our prestigious university.

Government information and Communication Division

Sunday, November 8, 2026