cancer stem cells (cscs) have been defined as a unique subpopulation in tumors, endowed with the capacity to initiate tumor progression, maintain self-renewal as well as metastatic potential. recently, more evidence strongly indicates the existence of cscs in solid tumors of wide variety of organs such as breast, brain and stomach. recent studies suggest that a special subpopulation of gastric ...

Leptin is an adipocytokine that regulates body weight, and maintains energy homeostasis by promoting reduced food intake and increasing energy expenditure. Leptin expression and secretion is regulated by various factors including hormones and fatty acids. Butyrate is a short-chain fatty acid that acts as source of energy in humans. We determined whether this fatty acid can play a role in leptin...

BACKGROUND Endocrine disrupting chemicals are widely distributed in the environment and derive from many different human activities or can also be natural products synthesized by plants or microorganisms. The phytoestrogen, genistein (4', 5, 7-trihydroxy-isoflavone), is a naturally occurring compound found in soy products. Genistein has been the subject of numerous studies because of its known ...

Changes in glutamatergic synaptic strength in brain are dependent on AMPA-type glutamate receptor (AMPAR) recycling, which is assumed to occur through a single local pathway. In this study, we present evidence that AMPAR recycling occurs through different pathways regulated by synaptic activity. Without synaptic stimulation, most AMPARs recycled in dynamin-independent endosomes containing the G...

membrane/ protein trafficking in the secretory/ biosynthetic and endocytic pathways is mediated by vesicles. vesicle trafficking in eukaryotes is regulated by a class of small monomeric gtpases the rab protein family. rab proteins represent the largest branch of the ras superfamily gtpases, and have been concerned in a variety of intracellular vesicle trafficking and different intracellular sig...

In this paper, we study the magnetic switching of submicron-sized ferromagnetic thin films under thermal noise and external field. It is shown that the presence of the noise makes the switching easier with weaker external fields and induces more intermediate metastable states in the switching pathways. Different switching pathways are preferred at different temperatures. A quantitative relation...