Aging ; Animals ; Male ; Nitric Oxide ; metabolism ; Rats ; Rats, Sprague-Dawley ; Superoxide Dismutase ; metabolism ; Testis ; metabolism

Many epidemiological data and study of experiment show that adminstration of NSAIDs in long term can prevent the carcinogenesis of colorectal cancer, its mecanism can be associated with the inhibition of PG which is produced by Cox 2 way, in addition, promoting apoptosis and anti oxidation were also one of the mecanisms of NSAIDs, the new selective Cox 2 inhibitor without gastrointestinal side effect would become the chemopreventive drugs of colorectal tumor.

? Diabetic retinopathy is one of those significant complications of diabetes.With the increasing number of diabetic patients, blind caused by diabetic retinopathy is a serious threat to human health which cannot be neglected, but there is no highly effective treatment for it. Consequently, early detection and preventive treatment for it are important.Currently, studies have found that urine microalbumin had a close relation with diabetic retinopathy and that urine microalbumin might play an important role in early predicting of diabetic retinopathy. The review is about the diagnostic significance of urine microalbumin test for early diabetic retinopathy.

Venous valve plays an important role in regulating the venous flow,especially in preventing the blood backflow.It has heen observed that when deep vein thrombosis and dissolved,the valves in the lesions had been destroied or dysfunction.The mechanism of damage of vein valve has not been fully clarified,but as we know,it's common that the inflammatory reaction,due to many unfavorable factors,can cause thrombosis.On the other hand,deep vein thrombosis could bring out the inflammatory reaction as well.So the author will review the development of researching of the destruction of venous valves in recent years.

The cancer stem cell hypothesis posits that cancer stem cells,which are rare among the tumor cell population and share many common properties with normal stem cells,and have been positively identified and successfully isolated from some cancers,are responsible for tumorigenesis and implicated in multistage cancer progression,particularly with respect to metastasis.A better understanding may provide insights into the development of cancer stem cell-targeting therapeutic strategies.The examines what is known regarding cancer stem cells' concept,comparison with normal stem cell,potential origins,assays for isolation and their roles in metastasis.

Humans ; Nephritis ; etiology ; therapy ; Prognosis ; Purpura, Schoenlein-Henoch ; complications ; therapy ; Sjogren's Syndrome ; etiology ; therapy

Adipose Tissue ; cytology ; Heart ; physiology ; Humans ; Regeneration ; Stem Cells ; cytology

OBJECTIVE:To study the volatile constituents of the compound extract from Folium Perillae,Pericarpium Citri and Herb Schizonepetae in Siji Ganmao tablet by supercritical CO2 fluid extraction (SFE-CO2). METHODS:Supercritical CO2 ex-traction technology was used to extract the volatile constituents of 3 medical material in Siji Ganmao tablet. The chemical constitu-ents of the compound extract from 3 medicinal materials were analyzed by GC-MS. RESULTS:The extracting rate of SFE-CO2 was 2.21%,21 compounds in the compound extract were separated and 16 compounds were identified with the major components of si-nensetin(36.56%)and linolic acid(19.52%). The extracting rate of water steam distillation(SD)was 1.035%,51 compounds in the compound extract were separated and 32 compounds were identified with the major components of D-limonene(62.40%) and thujone(15.49%). CONCLUSIONS:The volatile constituents of F. perillae,P. cCitri and H. Schizonepetae can be compound ex-tracted by SFE-CO2,however,it is different from the constituents of the compound volatile oil by SD.

0.05).SEM revealed that the lased enamel surface appeared various patterns of microirregularity, and there was no smear layer.Conclusion:Laser irradiation can be used to prepare the enamel before placing pit and fissure sealant.

To explore the risk factors of graft rejection in non-myeloablative transplantation between HLA-identical siblings and to evaluate methods to increase donor cell engraftment, 8 patients with graft rejection were studied . The results showed that the usage of immunosup-pressive agents, low early engraft rate, and the kind of disease being CML were closely related with graft rejectioa For patients with graft rejection, second non-myeloablative transplantation is a useful way.