Hasil Pencarian  ::  Simpan CSV :: Kembali

"Tooth eruption is a complex process that involves osteoclasts to form the eruption pathway. Lipopolysaccharide (LPS) is a bacterial component that plays multifunctional roles in inflammatory reactions, and one of these roles is powerful stimulation of bone resoption. Osteopontin (OPN) is a phosphorylated glycoprotein the expression of which is associated with migration, attachment and signaling of osteoclast. The objective of this study was to investigate the effect of LPS on rat alveolaris bone osteopontin during the period of tooth eruption. Fifty five Wistar male albino rats, five days of age were divided into three groups. The first group was not subjected to any treatment. The second group was inducted with LPS at five days of age. The third group was inducted with LPS at nine days of age. Expression of OPN was analyzed by immunohistochemical (IHC) approach. The results showed significant differences in OPN expression (p<0.05) within the treated subjects. It was concluded that LPS induction during tooth eruption increases the level of alveolar bone osteopontin."

"Bacterial lipopolysaccharide (LPS) is impacted in the etiology of inflammatory periodontal disease. Aside from immunopathologic reactions which may be involved in the pathogenesis of the disease, the possibility exist that direct cytotoxic effect on cultured human gingival fibroblasts may be equally destructive. The expression of P53 protein can be one of markers to examine the state of impaired DNA. The purpose of this study was to investigate the effect of LPS toward expression of P53 protein on cultured human gingival fibroblasts. Cultured human gingival fibroblasts were exposed to LPS in concentrations of 50 and 200 ug/ml and untreated medium for a period of 24 and 48 hours. Cells were harvested and prepared for immunohistochemical evaluation. After exposure for 24 and 48 hours, the fraction of P53-positive cells was 81.7% in case of 50 ug/ml LPS, and 88.8% in case of 200 ug/ml LPS. After exposure for 48 hours, the fraction of P53-positive cells was 32.2% in case of 50 ug/ml LPS, and 21.1% in case of 200 ug/ml LPS. None of untreated group showed p53-positive cells. Up-regulation of p53 protein during the initial logarithmic phase of growth may be a consequence of on-going DNA damage."

"ABSTRACTLatar belakang: Kerusakan tulang dapat menyebabkan penurunan tingkat kesehatan seseorang. Rosella merupakan tumbuhan herbal Indonesia yang memiliki kandungan yang dapat digunakan untuk memperkuat dan mencegah kerusakan tulang. Hingga saat ini, belum ada penelitian tentang keefektifan bunga rosella sebagai terapi untuk mengurangi kerusakan tulang. Tujuan: Melihat efektivitas ekstrak etanol Kelopak Bunga rosella teridentifikasi 10% terhadap kerusakan tulang calvaria Mus musculus akibat injeksi LPS. Metode: Model kerusakan tulang dibuat dengan menginjeksi tulang calvaria dengan lipopolisakarida (LPS) pada hari pertama. Selanjutnya, dilakukan injeksi di daerah kerusakan tulang dengan saline (kelompok kontrol) dan ekstrak etanol bunga rosella (kelompok perlakuan) pada hari kedua. Mus musculus dikorbankan pada hari ke lima dan dibuat sediaan histologi jaringan tulang calvaria. Kemudian, dilakukan analisis luas area kerusakan tulang. Hasil: Kelompok terapi yang diinjeksi ekstrak etanol kelopak bunga rosella menunjukkan area kerusakan tulang yang lebih sedikit yaitu 53,71% dibandingkan kelompok kontrol yang diinjeksi saline yaitu 95,61%. Kesimpulan: Ekstrak etanol kelopak bunga Rosella 10% efektif dalam mengurangi kerusakan tulang.

---

ABSTRACTBackground: Bone damage can cause a decrease in one's health level. Rosella is an Indonesian herbal plant that has ingredients that can be used to strengthen and prevent bone damage. Until then however, there are no studies on the effectiveness of rosella flowers as a therapy to reduce bone damage. Objective: To see the effectiveness of ethanol extract of Rosella calyx 10% identified against damage to calvaria Mus musculus bone due to LPS injection. Method: The bone damage model was created by injecting calvaria bone with lipopolysaccharide (LPS) on the first day. Next, doneinjection in the area of ​​bone damage with saline (control group) and ethanol extract of rosella flowers (treatment group) on the second day. Mus musculus was sacrificed on the fifth day and histology of the calvaria bone tissue was made. Then, an area of ​​bone damage analysis is performed. Results: The therapeutic group injected with rosella calyx ethanol extract showed less bone damage area of ​​53.71% compared to the control group injected with saline which was 95.61%. Conclusion: Rosella flower petal ethanol extract 10% is effective in reducing bone damage."