ABSTRACT
INTRODUCTION: Some laminoplasty procedures still have restenosis because of bony-bridging failure of the laminar hinge. The present study aimed to determine the effect of mesenchymal stem cell (MSC)-enriched scaffolds on vertebral regeneration after laminoplasty on the basis of the number of osteoblasts, matrix metalloproteinase-8 (MMP-8), and transforming growth factor-beta (TGF-ß) levels. METHODS: Laminoplasty procedure using the Hirabayashi technique was conducted at the lumbar level in 32 rabbits that were divided into four and three groups of the control (C) and treatment groups, respectively, with different types of laminoplasty spacer (T1, autograft; T2, scaffold; and T3, scaffold with MSCs). Histopathological studies were conducted to calculate the number of osteoblasts and enzyme-linked immunosorbent assay tests to detect MMP-8 and TGF-ß 4 weeks after the surgery. RESULTS: The results showed a significant decrease in MMP-8 level in the T3 group compared with that in the control group (p < 0.05). A significant difference exists between the average number of newly formed osteoblasts in the control group compared with that in the T3 group (p < 0.05) with a higher mean blood TGF-ß level of all experimental groups compared with that of the control group (p = 0.58). CONCLUSION: The significant decrease in MMP-8 levels, increase in TGF-ß levels, and increased number of osteoblasts on MSC-seeded polylactic acid scaffolds could be useful to support the laminoplasty procedure to prevent restenosis because it was biocompatible and promoted the bone healing process.
ABSTRACT
BACKGROUND: Therapy for osteoarthritis (OA) with satisfactory results has not been found to date. In OA pathogenesis, RELA gene involved in cartilage degradation and MMP-13 in degrade cartilage, as a member family of NF-κß genes, RELA serves to modulate inflammatory responses and activates pro-inflammatory cytokines. AIM: This study aims to identify the influence of Wharton Jelly Mesenchymal Stem Cell (MSC-WJ) on MMP-13 and RELA expression gene in synoviocyte by in vitro. MATERIAL AND METHODS: This research is pure experimental research. The sample used derived from synovial tissue of OA patients who underwent Total Knee Replacement (TKR) surgery. This study was divided into six groups treated with 4 replications. Group I and II (control groups) were synoviocyte of OA incubated for 24 and 48 hours, respectively. Group III and IV were MSC-WJ incubated for 24 and 48 hours, respectively. Group V and VI were Synoviocyte-MSC-WJ co-culture group incubated for 24 and 48 hours, respectively. Identification of MMP-13 and RELA gene expression in each group was performed by using qPCR. RESULT: The results showed that MSC-WJ reduced MMP-13 gene expression after co-culture for 24 and 48 hours in OA synoviocyte. The highest gene expression of MMP-13 was in Group I and II (1.00 ng/µl), followed by Group III (0.41 ng/µl), Group IV (0.24 ng/µl), Group V (0.13 ng/µl), and Group VI (0.04 ng/µl). MSC-WJ administration also decreased RELA gene expression. The highest gene expression of RELA gene was in Group I and II (1.00 ng/µl), Group V (0.67 ng/µl), Group III (0.58 ng/µl), Group IV (0.16 ng/µl), and Group VI (0.16 ng/µl). CONCLUSION: This study concluded that MSC-WJ in OA synoviocyte significantly reduced the expression of MMP-13 and RELA gene (p <0.05).
ABSTRACT
BACKGROUND: Therapy that can cure osteoarthritis with satisfactory results has not been found to date. In the pathogenesis of osteoarthritis, the genes involved in cartilage degradation include the RELA gene which plays an important role in modulating the occurrence of cartilage damage, which involves activation of pro-inflammatory cytokines. One of the cytokines involved in the cartilage degradation process is Matrix Metalloproteinase (MMP) -13 which is also modulated by NFκß. AIM: This study aims to look at the expression of the RELA gene and expression of the MMP-13 gene and analyse the relationship of RELA gene expression with MMP-13 gene expression after administration of Mesenchymal Stem Cell Wharton Jelly in synoviocytes in vitro. MATERIAL AND METHODS: This research is pure experimental research. The samples used derived from synovial tissue in osteoarthritis patients who underwent surgery for Total Knee Replacement (TKR). This study was divided into 6 treatment groups with 4 replications. Group I was the synoviocyte OA cell control group which was incubated 24 hours, group II was control of synoviocyte OA cell which was incubated 48 hours, group III was a group of Mesenchymal Stem Cell Wharton Jelly (MSC-WJ) which was incubated 24 hours, group IV was a Mesenchymal Stem Cell Wharton Jelly (MSC-WJ) cell group incubated 48 hours, group V was the co-culture group of synoviocyte-MSC-WJ cells incubated 24 hours and group VI was the co-culture of synoviocyte-MSC-WJ cells which were incubated 48 hours. Observation of MMP-13 gene expression and RELA gene in each group was carried out using qPCR. RESULT: The results showed that the analysis of the relationship between RELA gene expression and MMP-13 gene expression in osteoarthritis synoviocytes cells after Mesenchymal Stem Cell Wharton Jelly as big as (r = 0.662). CONCLUSION: The conclusion of this study is there was a strong correlation between RELA gene expression and MMP-13 gene expression in osteoarthritis synoviocytes after Mesenchymal Stem Cell Wharton Jelly (r = 0.662).
ABSTRACT
In 1986, the National Nuclear Energy Agency (Batan) in Jakarta started the research and development for the setting up of a tissue bank (Batan Research Tissue Bank/BRTB) by preserving fresh amnion or fetal membranes by lyophilisation and then sterilising by gamma irradiation. During the period of 1990 and 2000, three more tissue banks were set up, i.e., Biomaterial Centre in Surabaya, Jamil Tissue Bank in Padang, and Sitanala Tissue Bank in Tangerang. In 1994, BRTB produced bone allografts. The banks established under the IAEA program concentrated its work on the production of amnion, bone and soft tissues allografts, as well as bone xenografts. These tissues (allografts and xenografts) were sterilised using gamma irradiation (about 90%) and the rest were sterilized by ETO and those products have been used in the treatment of patients at more than 50 hospitals in Indonesia. In 2004, those tissue banks produced 8,500 grafts and 5,000 of them were amnion grafts for eye treatment and wound dressing. All of those grafts were used for patients as well as for research. In 2006, the production increased to 9,000 grafts. Although the capacity of those banks can produce more grafts, we are facing problems on getting raw materials from suitable donors. To fulfill the demand of bone grafts we also produced bone xenografts. The impact of the IAEA program in tissue banking activities in Indonesia can be summarised as follows: to support the national program on importing substitutes for medical devices. The price of imported tissues are between US$ 50 and US$ 6,000 per graft. Local tissue bank can produce tissues with the same quality with the price for about 10-30% of the imported tissues.
