Background: It is now well established that several environmental stress factors cause activation of p38 MAP kinase and JNK in various cell types to produce chemokines. Objective: To investigate the expression of CXC chemokines Gro/KC and SDF- 1a in rat's H4 hepatoma cells in response to heat shock, hyperosmolarity and oxidative stress. Methods: Hepatoma cells were maintained in MEM medium. Cel...

protein tyrosine phosphatases (ptpases) regulate tyrosine phosphorylation of target proteins involved in several aspects of cellular functions. enzyme activities of the ptpases in cytosolic and particulate fractions of rat ascites hepatoma cell lines were determined and compared with those of normal rat liver. our present data revealed that although there was no neoplatic-specific alteration of...

Among biologists Alex Novikoff is known foremost for his contributions to the discovery and characterization of several cell organelles—lysosomes, peroxisomes, microperoxisomes and the Golgi body—as well as helping to pioneer the field of cell biology. Among a wider audience, he is notable as a victim of the excesses of the anti-communist movement in mid-20th-century America. Novikoff's early a...

conclusions taken together, these data reveal that cellular protease of chicken liver cells allows the replication of high yields of h9n2 virus in the absence of trypsin and also cell death in the infected cells is due to necrosis. results the degree of viability was significantly reduced in infected hepatoma cells. observations of caspase activation and cell dna laddering in infected cells wer...

background: it is now well established that several environmental stress factors cause activation of p38 map kinase and jnk in various cell types to produce chemokines. objective: to investigate the expression of cxc chemokines gro/kc and sdf- 1a in rat's h4 hepatoma cells in response to heat shock, hyperosmolarity and oxidative stress. methods: hepatoma cells were maintained in mem medium...

aim : to create an orthotopic hepatoma model with local metastasis monitored with ultrasound could be created as a platform for testing new treatments.   background : hepatoma accounts for 25% of liver tumors in children with poor overall survival. intraabdominal metastasis are present in 35% of patients at time of diagnosis.  we hypothesized that an orthotopic tumor model with local metastasis...

several cell lines (18) of poorly differentiated rat ascites hepatomas which grown intraperitoneally were analyzed with respect to their mrna levels of gst-p and albumin. the expression of albumin was dramatically decreased and became undetectable in all of the examined hepatomas compared with normal rat liver. the gst-p mrna level in the hepatomas was correlated with their ability for formatio...

background and objectives: significant progress has been made in treatment of hemophilia. ex-vivo gene therapy is going popular due to the capability of this method in using isogenic cells for genetic manipulation and reintroducing them into same host after proliferation. most gene therapy techniques use viral vectors, which usually harbor a strong and non-specific promoter (e.g. cmv early prom...

Abstract Background Hepatoma is a common malignancy of the liver. The abnormal high expression alpha-fetoprotein (AFP) intimately associated with hepatoma progress, but mechanism transcriptional regulation and singularly activation AFP gene in not clear. Methods transcription factor HBP1 clinical significance were further analyzed tissues from patients who received surgery or TACE then monitore...