The objectives of this study are summarized as follows:

1. 1. Isolation and identification of Extended Spectrum Beta-Lactamase Klebsiella pneumoniae (ESBL) from pneumonia patients in some Baghdad hospitals.
   2. Biosynthesis of Zinc oxide fungal-mediated nanoparticles and study of their antibacterial activity.
   3. Study the potential effects of these nanoparticles on the gene expression of ESBL-encoding (blaSHV, blaTEM, and blaCTX-M), and biofilm-associated genes (mrk A,luxS) in ESBL.Kp isolates.

1. Extraction process: Preparing the Fusarium oxysporum extracts and studying the antibacterial activity of the extracts against ESBLKp isolates.
2. Preparation and characterization of fungal nanoparticles: Detailed analysis of the size, shape, structure, and composition of the fungal, nanoparticles through techniques such as UV-Visible Absorption Spectroscopy (UV-Vis spectroscopy), Fourier Transform Infrared Spectroscopy analysis (FTIR) analysis, Scanning Electron Microscopy (SEM) analysis, Atomic Force Microscopy (AFM), Energy Dispersive X-ray (EDX) analysis, X-ray diffractometer (XRD) ,Zeta potential analysis.
3. Antibacterial activity: Evaluating the antibacterial efficacy of the biosynthesized Zinc oxide nanoparticles against Kp isolates.
4. Efficiency in reducing the gene expression: Investigating the nanoparticles’ ability to reduce the gene expression of Kp isolates..

The most important recommendations which the study has come up with and the average obtained:

1. Accurate toxicological assessments of oxysporum extracts and nanoparticles are essential to ensure their safety in biomedical applications.
2. Further research is needed to explore the pharmacological potential of Fusarium oxysporum extracts in developing novel therapeutic agents for respiratory infections, including pneumonia.
3. Expanding the evaluation of oxysporum extracts and their biosynthesized nanoparticles against a wider range of pathogenic microorganisms, including other bacteria, fungi, and viruses.
4. A study of the structure and characterization of the bioactive compounds produced by F. oxysporum is also necessary to better understand their mechanisms of action and evaluate their potential applications as natural food preservatives.