ABSTRACT
Hepatitis B virus （HBV） has the characteristics of wide transmission， a high chronic infection rate， and a low cure rate， and improving the cure rate of HBV may help to improve the long－term prognosis of patients. Heat shock protein 90 （Hsp90） is a chaperone protein widely present in organisms. In recent years， more and more studies have shown that Hsp90 is associated with HBV infection and plays an important role in HBV replication. It can not only interact with specific proteins of the virus to promote its replication， but also interact with the host’s own proteins to perform its function. This article reviews the role of Hsp90 in HBV replication in recent studies， so as to provide new theoretical guidance and directions for the development of new anti－HBV drugs targeting Hsp90 and the prevention and treatment of HBV infection in the future.
ABSTRACT
Objective To investigate the protective role of FDP to STZ induced islest apoptosis and the potential mechanisms.Methods The pancreases of the rats were treated to collect islets cells.The cells were incubated with STZ with/or FDP.Cell morphology,insulin secretion,HO-1 activity,CO content,SOD activity,GSH-px activity,iNOS activity were examined.No conetent and apoptotic percentage was detected.Results HO-1 activity and CO content of the normal control group were low.STZ induced a significant decrease of cell activity and insulin release,flow cytometry analysis showed that apoptotic percentage of islet cells remarkably increased following the addition of STZ,FDP obviously improved the islets cellular activity damaged by STZ,basic amount of insulin secretion and stimulated by high glucose were improved(P
ABSTRACT
The effect of taurine on IL-1?induced inhibition of insulin release was investigated with cultured neonatal rat pancreatic islet cells.The results indicated that:①Insulin release, both the basal and glucose-stimulated,could be significantly inhibited by addition of IL-1?(5～20U/ml).②The inhibitory effect of IL-1? on insulin release could be reversed by taurine and this effect was directly related to the dose and action time of taurine.
ABSTRACT
Lithium (Li) salt is a kind of antipsychotic drug commonly used in the treatment and prevention of mental disorders, but its mechanism of action is still not well understood. Knowing that central dopaminergic neurons are usually the site of action of antipsychotic drugs and some central stimulents, we determined flourospe-ctropnotometrically the dopamine level of discrete brain regions of rat after Li was given intraperitonially 24 hr, 3 days and 5 days later to observe the effect of acute and chronic application of Li on brain dopamine level.The result showed that dopamine level of different brain region and spinal cord were lowered after 24 hr of Li injection, but it increased moderately 3 days later and dramatically 5 days later. It showed that central dopamine of the animal undergoes a series of metabolic change during Li application. 'There is no unique idea about the effect of Li on brain dopamine metabolism, we discussed the result of our experiment preliminary
ABSTRACT
Isolated pancreatic islet cells from neonatal rats were cultured in vitro. Insulin release was significantly inhibited by interleukin-1?. Addition of testosterone to the IL-, 1?-impaired pancreatic islets could increase insulin release, suggesting a protective effect of testosterone on pancreatic islet cells. Testosterone also significantly increased the insulin content in islet cells, and this effect could be blocked by actinomycin-D, indicating that testosterone promoted the synthesis of DNA and insulin may be one of its major protective mechanism.