Objective: Helicobacter pylori has a well-established role in the development of gastric cancer. In vitro studies reveal increased proliferation of the gastric mucosa in the presence of H. pylori infection. It has been also shown that production of some cytokines, such as interleukin-1 beta (IL-1b) is in...

We tested various thymidine analogues for induction of a senescence-like phenomenon in HeLa cells. CldU, BrdU, and IdU similarly induced the morphology of senescent cells and typical senescence markers. Thymidine analogues other than 5-halogenated forms caused only cell death. BrdU efficiently killed the cells in cooperation with irradiation with light and a brief treatment with Hoechst 33258, ...

BrdU infusion into normal cats: Osmotic pumps (ALZET) were filled with 50mg/mL BrdU dissolved in 50% DMSO/50% ddH2O filtered through a sterile 0.22μm filter. Pumps were then incubated in sterile saline at 37 °C overnight prior to insertion. The pumps were surgically inserted subcutaneously just caudal to the scapulae per the protocol approved by IACUC at Temple University. The number of pumps w...

This unit describes two methods used to determine the rate of turnover of T and B cells in vivo. In each method, this is accomplished by administering 5-bromo-2'-deoxyuridine (BrdU), a thymidine analog, and measuring the rate at which cells become labeled with this DNA precursor during the S phase of the cell cycle. Cells that contain BrdU are then detected in vitro using fluorochrome-labelled ...

The PC3 gene is transiently expressed during neurogenesis in precursor cells of the telencephalic ventricular/subventricular zone, and is rapidly downregulated before cell migration and differentiation. It is thought to have a role in controlling cell proliferation, but its precise function is not known. Here we present evidence that PC3, when overexpressed in vitro by retroviral-mediated gene ...

The immortal strand hypothesis proposes that asymmetrically dividing stem cells (SCs) selectively segregate chromosomes that bear the oldest DNA templates. We investigated cosegregation in neural stem cells (NSCs). After exposure to the thymidine analogue 5-bromo-2-deoxyuridine (BrdU), which labels newly synthesized DNA, a subset of neural precursor cells were shown to retain BrdU signal. It wa...

Genetic variations in the gene encoding dysbindin has consistently been associated with schizophrenia and bipolar disorder, although little is known about the neural functions carried out by dysbindin. To gain some insight into this area, we took advantage of the readily available dysbindin-null mouse sandy (sdy-/-) and studied hippocampal neurogenesis using thymidine analogue bromodeoxuridine ...