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Chitosan nanoparticles have been extensively studied for drug and gene delivery. In this paper, monodisperse, low molecular weight (LMW) chitosan nanoparticles were prepared by a novel method based on ionic gelation using sodium tripolyphosphate (TPP) as cross-linking agent. The objective of this study was to solve the problem of preparation of chitosan/TPP(More)
It has been reported that lysosomal proteases play important roles in ischemic and excitotoxic neuronal cell death. We have previously reported that cathepsin B expression increased remarkably after traumatic brain injury (TBI). The present study sought to investigate the effects of a selective cathepsin B inhibitor (CBI)(More)
The prevalence of helminths in adult sheep was investigated in Heilongjiang Province, People's Republic of China between January 1999 and September 2003. A total of 326 adult sheep representing local breeds (Xingjiang Fine Wool Sheep, Dongbei Fine Wool Sheep) as well as introduced breeds (Merino and Charollais) from representative geographical locations in(More)
BACKGROUND The human telomerase reverse transcriptase (hTERT) gene encodes the catalytic subunit of telomerase, which mediates pleiotropic effects, including the regulation of senescence and proliferation and plays an important role in carcinogenesis. This study attempts to clarify the genetic predisposition to hepatocellular carcinoma (HCC), focusing on(More)
To investigate the role of preoperative neutrophil-to-lymphocyte ratio (NLR) in prediction of response to first-line platinum-based chemotherapy and survival outcome in serous ovarian cancer (SOC) patients. Clinicopathologic data were reviewed for patients with SOC treated with primary cytoreduction followed by platinum-based chemotherapy. The correlations(More)
To evaluate the long-term effects of single or recurrent prolonged neonatal seizures on seizure threshold and neuronal activity in the brain, a novel "twist" seizure was induced by coupling early-life flurothyl-induced seizures with later exposure to pentylenetetrazol. The authors assigned six neonatal rats for each group: the single-seizure group (SS), the(More)
For the purpose of investigating the role of physical exercise in developmental seizure-induced cognitive deficit, hippocampal mossy fiber sprouting and related gene expression, a seizure was induced by penicillin every other day in Sprague-Dawley rats from postnatal day 24 (P24). The authors assigned ten rats each randomly into the control group (CONT1),(More)
An improved surface-immobilisation system was engineered to target heterologous proteins onto vegetative cells and spores of Bacillus thuringiensis plasmid-free recipient strain BMB171. The sporulation-dependent spore cortex-lytic enzyme from B. thuringiensis YBT-1520, SceA, was expressed in vegetative cells and used as the surface anchoring motif. Green(More)
Low molecular weight (LMW) chitosan nanoparticles have attracted considerable attention as colloidal drug carriers, but when applied to intravascular drug delivery, they are easy to be removed from circulation by the reticuloendothelial system, which limits their applications as long-circulating or target-specific carriers. Erythrocytes have a long(More)
The tumor microenvironment (TME) plays a prominent role in the growth of tumor cells. As the major inflammatory component of the TME, M2d macrophages are educated by the TME such that they adopt an immunosuppressive role that promotes tumor metastasis and progression. Fra-1 forms activator protein-1 heterodimers with Jun partners and drives gene(More)