Osong Public Health and Research Perspectives

Original Articles

The first report of antibiotic resistance and virulence factor profiles in multidrug-resistant clinical isolates of Klebsiella pneumoniae from Pontianak, Indonesia: Mardhia Mardhia, Delima Fajar Liana, Mahyarudin Mahyarudin, Hariyanto Ih; Osong Public Health Res Perspect. 2025;16(2):160-168. Published online April 4, 2025; DOI: https://doi.org/10.24171/j.phrp.2024.0242

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Graphical Abstract Abstract PDF: Objectives
Klebsiella pneumoniae is known as one of the most common causes of hospitalacquired infections. Its prevalence poses substantial challenges to both hospital and public health systems, particularly due to the rise of multidrug‐resistant strains. Understanding the epidemiology and resistance properties of K. pneumoniae can inform antimicrobial stewardship and infection control programs. A cross-sectional study was employed from November 2021 to November 2023. Methods: A total of 24 isolates underwent antimicrobial susceptibility testing using the disk diffusion method, an extended-spectrum beta-lactamase (ESBL) production test, and molecular gene detection. Results: The study found that 95.8% of clinical isolates were classified as multidrug-resistant. All isolates were resistant to ampicillin (100%). A high percentage of isolates were resistant to cefazolin (91.7%), ceftriaxone (87.5%), cefotaxime (87.5%), cefepime (87.5%), ciprofloxacin (83.3%), and sulfamethoxazole-trimethoprim (83.3%). Of the 24 isolates, 87.5% harbored ESBL genes, while the frequencies for GES, NDM, SIM, and OXA-48 were 16.7%, 20.8%, 8.3%, and 41.7%, respectively. Notably, the OXA-23 and OXA-51 genes, which are typically associated with Acinetobacter baumannii, were detected in 16.7% and 20.8% of isolates, respectively. Moreover, the prevalence of virulence genes rmpA, acrAB, and tolC was 0%, 95.8%, and 87.5%, respectively. Conclusion: This study demonstrated a high level of antibiotic resistance and a significant presence of virulence genes among K. pneumoniae isolates. Consequently, these findings represent a critical public health issue that requires heightened awareness among all stakeholders, including health workers.

Immunoinformatics approach for design novel multi-epitope prophylactic and therapeutic vaccine based on capsid proteins L1 and L2 and oncoproteins E6 and E7 of human papillomavirus 16 and human papillomavirus 18 against cervical cancer: Nicholas Ryan, Sari Eka Pratiwi, Mardhia Mardhia, Ysrafil Ysrafil, Delima Fajar Liana, Mahyarudin Mahyarudin; Osong Public Health Res Perspect. 2024;15(4):307-328. Published online July 23, 2024; DOI: https://doi.org/10.24171/j.phrp.2024.0013

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Graphical Abstract Abstract PDF Supplementary Material

Objectives
This study aimed to identify the optimal protein construction for designing a multi-epitope vaccine with both prophylactic and therapeutic effects against cervical cancer, utilizing an immunoinformatics approach. The construction process involved using capsid epitopes L1 and L2, as well as oncoproteins E5, E6, and E7 from human papillomavirus (HPV) types 16 and 18.
Methods
An experimental in silico analysis with an immunoinformatics approach was used to develop 2 multi-epitope vaccine constructs (A and B). Further analysis was then conducted to compare the constructs and select the one with the highest potential against cervical cancer.
Results
This study produced 2 antigenic, non-allergenic, and nontoxic multi-epitope vaccine constructs (A and B), which exhibited the ideal physicochemical properties for a vaccine. Further analysis revealed that construct B effectively induced both cellular and humoral immune responses.
Conclusion
The multi-epitope vaccine construct B for HPV 16 and 18, designed for both prophylactic and therapeutic purposes, met the development criteria for a cervical cancer vaccine. However, these findings need to be validated through in vitro and in vivo experiments.

Citations

Citations to this article as recorded by

Modulation of epithelial homeostasis by HPV using Notch and Wnt
June See Chong, John Doorbar
Tumour Virus Research.2024; 18: 200297. CrossRef

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