Authors:
Sri Wahyuni
1
;
Yoes Prijatna Dachlan
1
and
Agung Dwi Wahyu Widodo
2
Affiliations:
1
Department of Immunology Postgraduate School, Airlangga University, Department of Anatomical Pathology, Faculty of Medicine and Airlangga University, Indonesia
;
2
Department of Clinical Microbiology, Faculty of Medicine and Airlangga University, Indonesia
Keyword(s):
Caspase-3, Methicillin Resistant Staphylococcus aureus (MRSA), Entrerococcus faecalis
Abstract:
Bacteria are organisms that can cause infection. Methicillin Resistant Staphylococcus aureus (MRSA) and Entrerococcus faecalis are gram-positive bacteria that can cause nosocomial infections. Virulence factors of MRSA thus play a role in the infection process, such as are polysaccharide, surface proteins such as adhesins, glycoprotein, hemagglutinin, and fibronectin, while enterococcus such as gelatinase, cytolysin, enterococcal surface protein (Esp) and aggregation substance (AS) are the virulence factors of Enterococcus that can cause infection. This research is True Experimental research with post-test only for the Control Group Design. The MRSA and E. faecalis bacteria were injected intraperitoneally to R. norvegicus and observed after 24 hours. Animals were placed into three groups: the control group, treatment with MRSA, and Enterococcus faecalis. The hepar and spleen were isolated from the dead R. norvegicus and a Immunohistochemistry (IHC) test was conducted to observe the ex
pression of caspase-3 by light microscope. The result showed that the caspase-3 expression increased in the infected group of MRSA and Enterococcus faecalis compared with the control group. The expression of caspase-3 in the hepar was higher than in the spleen. The hepar serves as the receiver of the portal and systemic circulation. The hepar also plays an important role in the host defense that is exposed to and will catch pathogens, followed by cleaning. The increased expression of caspase-3 suggests the cell death also increased.
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