N-acetyl cysteine alleviates cytotoxicity of bone substitute.
نویسندگان
چکیده
Lack of cytocompatibility in bone substitutes impairs healing in surrounding bone. Adverse biological events around biomaterials may be associated with oxidative stress. We hypothesized that a clinically used inorganic bone substitute is cytotoxic to osteoblasts due to oxidative stress and that N-acetyl cysteine (NAC), an antioxidant amino acid derivative, would detoxify such material. Only 20% of rat calvaria osteoblasts were viable when cultured on commercial deproteinized bovine bone particles for 24 hr, whereas this percentage doubled on bone substitute containing NAC. Intracellular ROS levels markedly increased on and under bone substitutes, which were reduced by prior addition of NAC to materials. NAC restored suppressed alkaline phosphatase activity in the bone substitute. Proinflammatory cytokine levels from human osteoblasts on the bone substitute decreased by one-third or more with addition of NAC. NAC alleviated cytotoxicity of the bone substitute to osteoblastic viability and function, implying enhanced bone regeneration around NAC-treated inorganic biomaterials.
منابع مشابه
N Acetyl Cysteine, A novel Remedy for Poly Cystic Ovarian Syndrome
Background Poly cystic ovarian syndrome (PCOS) is the most prevalent endocrinopathy among women and the most common underlying diagnosis for anovulatory infertility. The role of insulin-resistance (IR) and hyperinsulinemia in pathophysiology and clinical manifestations of the syndrome depicts the importance of evaluation of the efficacy of insulin reducing medications. N acetyl cysteine (NAC) i...
متن کاملThe Efficacy of N-Acetyl-Cysteine (NAC) Supplementation in FST Model for Screening Antidepressants
Introduction: The model for screening antidepressant-like activity in pre-clinical drug studies include, rat forced swimming test (FST). The reports on N-acetylcysteine (NAC) as an antioxidant supplement in stress related disorder is well documented. This study was aimed at potential antidepressant mechanism of N- Acetyl Cysteine (NAC), a glutamate precursor on FST animal model for screening an...
متن کاملProtective Effect of N-Acetyl Cysteine in Carbon Tetrachloride-Induced Hepatotoxicity in Rats
The present study determines the efficacy of N-acetyl cysteine (NAC) on marker enzymes, lipid peroxidation and antioxidants in carbon tetrachloride induced hepatotoxicity in rats. Carbon tetrachloride (CCl4) (3 mL/kg/week) administered subcutaneously to albino Wistar rats for a period of three months significantly increased the activities of marker enzymes in plasma such as aspartate transamina...
متن کاملI-37: Pathogenesis of PCOS and N AcetyCysteine, A Novel Remedy for Poly Cystic Ovarian Syndrome
Background: Poly cystic ovarian syndrome (PCOS) is the most prevalent endocrinopathy among women and the most common underlying diagnosis for anovulatory infertility. The role of insulin-resistance (IR) and hyperinsulinemia in pathophysiology and clinical manifestations of the syndrome depicts the importance of evaluation of the efficacy of insulin reducing medications. N acetyl cysteine (NAC) ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of dental research
دوره 89 4 شماره
صفحات -
تاریخ انتشار 2010