ABSTRACT
AIM: To investigate the effects of hyperoside on traumatic brain injury (TBI) rats by regulating the Ras homolog gene family, member A (RhoA)/Rho-associated coiled coil-forming kinase (ROCK) signal pathway. METHODS: The TBI rat model was established by modified Feeney free fall hit method, and was randomly divided into model group, low-dose hyperoside (60 mg / kg) group, high-dose hyperoside (120 mg / kg) group, high-dose hyperoside (120 mg / kg) + no load group, and high-dose hyperoside (120 mg / kg) + RhoA overexpression group, with 10 rats in each group, another 10 healthy rats were set as sham operation group, after hyperoside and plasmid were grouped, the nerve injury was detected by modified neurological deficit score (mNSS) and dark avoidance test; Evans blue (EB) quantitative method was used to detect the permeability of blood brain barrier in rats; ultrastructural damage of blood-brain barrier was observed by transmission electron microscopy; the levels of tumor necrosis factor- α (TNF- α), interleukin-8 (IL-8), superoxide dismutase (SOD) and malondialdehyde (MDA) in serum and brain tissue of rats were measured with the kit; and the expression of RhoA/ROCK pathway related proteins in rat brain was detected by Western blot. RESULTS: Compared with the sham operation group, the blood brain barrier structure of the model group rats was damaged, the step-through latency and SOD level decreased obviously (P0.05). CONCLUSION: Hyperoside can inhibit neuroinflammation and oxidative stress in TBI rats by down-regulating RhoA / ROCK signal pathway, thereby reducing the damage of blood brain barrier and repairing its neural function.
ABSTRACT
The aim of this study was to detect mixed lineage kinase domain-like protein (MLKL) expression in gastric cancer (GC) and to analyze its association with the prognosis of GC patients. Immunohistochemical staining, Western blotting, and quantitative reverse-transcriptase polymerase chain reaction were performed to detect MLKL tissue expression in 117 GC patients. Clinicopathological characteristics and survival data were retrospectively analyzed to discover the clinical importance of MLKL expression. The chi-square test was used to analyze the relationship between MLKL expression and the clinicopathological characteristics. Survival curves were plotted by using the Kaplan-Meier method and compared using the log-rank test. Survival data were evaluated using univariate and multivariate Cox regression analyses. The expression of MLKL mRNA was significantly higher in adjacent normal samples than in the tumor tissues (P = 0.003). Clinicopathological analysis showed that MLKL expression was significantly correlated with age (P = 0.013), histologic type (P = 0.049), differentiation grade (P < 0.001), depth of invasion (P = 0.022), and lymph node metastasis (P = 0.003). Low MLKL expression was significantly associated with decreased overall survival (median 29 months vs. 56 months, P < 0.001). Multivariate analysis suggested that MLKL expression might be an independent prognostic indicator (HR = 0.645, 95 % CI, 0.446-1.165, P = 0.002) for GC patients. In conclusion, our findings provide evidence that MLKL might serve as a candidate tumor suppressor and a potential prognostic biomarker for GC.
Subject(s)
Adenocarcinoma/mortality , Biomarkers, Tumor/metabolism , Protein Kinases/metabolism , Stomach Neoplasms/mortality , Adenocarcinoma/metabolism , Adenocarcinoma/pathology , Adenocarcinoma/surgery , Biomarkers, Tumor/genetics , Blotting, Western , Female , Follow-Up Studies , Humans , Immunoenzyme Techniques , Male , Middle Aged , Neoplasm Grading , Neoplasm Invasiveness , Neoplasm Metastasis , Neoplasm Staging , Prognosis , Protein Kinases/genetics , RNA, Messenger/genetics , Real-Time Polymerase Chain Reaction , Retrospective Studies , Reverse Transcriptase Polymerase Chain Reaction , Stomach Neoplasms/metabolism , Stomach Neoplasms/pathology , Stomach Neoplasms/surgery , Survival RateABSTRACT
OBJECTIVE To investigate the situation of the tumor patients with subsequent bacteremia in hospital in order to study the some prevention and controlling measures. METHODS Ten cases in the internal medical department for tumor with the central venous pressure apparatus were analyzed and had the symptom of chilling and hyperpyrexia , and then were carried through the germiculture for the central venous catheter. RESULTS Pathogenic microorganism had been isolated from the hemoculture. CONCLUSIONS Once the patients with the central venous pressure apparatus have the symptoms of unknown infection, it must be consider the possibility of contaminated tube and conduct countermeasures in time.