Biokompatibilitas Pemanfaatan Membran Amnion Beku Kering Sebagai Pengganti Duramater Pada Duraplasti
Purpose: to test the biocompatibility of freeze-dried amniotic membranes as duramater biomaterial replacement for dural defects against surrounding brain tissue Method: This is an experimental study in two stages. The first stage is in vitro, to assess the toxicity of amniotic membrane exposure...
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Summary: | Purpose: to test the biocompatibility of freeze-dried amniotic membranes as
duramater biomaterial replacement for dural defects against surrounding brain
tissue
Method: This is an experimental study in two stages. The first stage is in vitro, to
assess the toxicity of amniotic membrane exposure and the conditioned medium
for mouse brain cell culture with MTT, DAPI, and Annexin-V staining for
viability, proliferation, and apoptosis respectively. The second stage was in vivo,
to assess the effect of inflammation with duraplasty using amniotic membrane in
wistar rats. Brain preparations were taken enbloc and immunohistochemical
staining was done to assess levels of IL-1β, IL-6, TNF-α, COX-2, and iNOS at the
time of treatment 4 and 14 days. Data is processed and tested by statistical
analysis.
Results: In Vitro experiment showed 76% cell viability in conditioned medium
group and 90% cell viability in direct amniotic membrane group. Cell culture
proliferation of treatment group was increased in conditioned medium exposure
and decreased in direct amniotic membrane exposure. Apoptosis did not shown a
significant difference upon exposure. In Vivo experiment showed a significant
increase of IL-1β, IL-6, and TNF-α expression on day 4 in control group
compared to treatment group (p=0,001). Proinflammatory cytokines expression
showed a significant decrease on day 4 and 14 in both treatment and control
group. No significant difference observed for COX-2 expression in both treatment
and control group. iNOS expression was significantly higher on day 4. Significant
decrease was observed on day 14 but no significant difference between treatment
and control group.
Conslusion: Amniotic membrane exposure did not shown toxic effect on cell
culture and did not overproduce inflammatory response on mouse brain tissue.
Freeze-dried amniotic membrane is a safe and compatible biomaterial for
duraplasty. |
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