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The aim of this study is to examine the capacity of muscle tissue preserved on hamstring tendons forming candy-stripe grafts in order to improve tendon to bone ingrowth and ligamentization. We hypothesized that muscle tissue does possess a stem cell population that could enhance the healing process of the ACL graft when preserved on the tendons. Human(More)
AIM Determine the levels of expression of pluripotency genes OCT-4 and SOX-2 before and after osteogenic differentiation of human mesenchymal stem cells (hMSCs). METHODS Human MSCs were derived from the bone marrow and differentiated into osteoblasts. The analyses were performed on days 0 and 14 of the cell culture. In vitro differentiation was evaluated(More)
Osteogenesis imperfecta (OI) or "brittle bone" disease is characterized by fragile bones, skeletal deformity, and growth retardation. Depending on the mutation and related phenotype, O1 is classified into types I-IV, which are caused by different mutations in collagen genes, and types V-VIII, which are indirectly but not directly collagen related. The most(More)
The role of nucleotide excision repair and 3-methyladenine DNA glycosylases in removing cytotoxic lesions induced by N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) in Salmonella typhimurium and Escherichia coli cells was examined. Compared to the E. coli wild-type strain, the S. typhimurium wild-type strain was more sensitive to the same dose of MNNG.(More)
The development of bioactive injectable system as cell carrier with minimal impact on viability of encapsulated cells represents a great challenge. In the present work, we propose a new pH-responsive chitosan-hydroxyapatite-based hydrogel with sodium bicarbonate (NaHCO3) as the gelling agent. The in situ synthesis of hydroxyapatite phase has resulted in(More)
PURPOSE Ultraviolet (UV) radiation-induced apoptosis enabled us to study the mechanism of DNA damage and to investigate how cells avoid consequences of damaged DNA. Cells with extensive DNA damage activate extrinsic and intrinsic pathways of apoptosis. The extrinsic pathway is coupled to a FAS-associated protein with death domain (FADD), an adaptor protein(More)
The role of nucleotide excision repair in the mutagenicity of the monofunctional alkylating agents N-methyl-N'-nitro-N-nitrosoguanidine (MNNG), methyl methanesulfonate (MMS), N-ethyl-N'-nitro-N-nitrosoguanidine (ENNG), and N-ethyl-N-nitrosourea (ENU) in Salmonella typhimurium was examined. The mutagenic potential of the mutagenic agents used increased in(More)
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