the rapid advancement of nanotechnology enables us to use nanoscale particles. this material in terms of physical, chemical and biological characteristics are unique compared to larger particles. increased cell division, apoptosis, oxidative stress has been associated with toxic effects of nano-silver. the aim of this study was to evaluate histipotological changes and enzyme activity in nanopar...

groups. Group 1 (n = 10) continued to be on food and water ad libitum and served as control. Group 2 (n = 10) received TA (0.3 g/L) of drinking water (5, 6) and food ad libitum for 16 weeks. Group 3 (n = 10) rats received TA (0.3 g/L) and sodium selenite (4 mg/L) of drinking water (7) and food ad libitum for 16 weeks. Group 4 (n = 10) received TA (0.3 g/L) of drinking water for the first 8 week...

A study has been made of 33 cases of granulomatous hepatitis. Of these, 12 were eventually established as cases of sarcoidosis, nine as cases of tuberculosis, and four as examples of primary biliary cirrhosis. No clinical diagnosis was ever reached in six cases. Analysis of the histological features of these cases shows that the presence of caseation or of tubercle bacilli will only allow for t...

introduction: accurate diagnosis of dental pulp conditions plays a key role in selection of an appropriate treatment including conservative vital pulp therapy (treatable pulp) or root canal treatment (untreatable pulp). the purpose of this study was to assess the accuracy of sensibility tests and the correlation of pulp response to sensibility tests with histologic pulp condition . material and...

INTRODUCTION Extracranial carotid artery aneurysms (ECAA) are rare but may be accompanied with significant morbidity. Previous studies mostly focused on diagnostic imaging and treatment. In contrast, the pathophysiological mechanisms and natural course of ECAA are largely unknown. Understanding the pathophysiological background may add to prediction of risk for adverse outcome and need for surg...

background and aims. mineral trioxide aggregate and calcium hydroxide are considered the gold standard pulp-capping materials. recently, portland cement has been introduced with properties similar to those of mineral trioxide aggregate. histopathological effects of direct pulp capping using mineral trioxide aggregate and portland cements on dog dental pulp tissue were evaluated in the present s...

Background: Little is known about the biology of meniscal allograft transplantation in humans. In particular, little information is available about the phenotype of the cells that repopulate the allograft, whether an immune response is elicited against the graft, and whether the repopulating cells synthesize normal extracellular matrix components. Methods: A small biopsy specimen of the menisca...