AIM To investigate the effects of p38 MAPK signaling on diallyl disulfide ( DADS ) induced apoptosis in CNE2 cells. METHODS Morphological changes and quantification of apoptotic cells were determined under fluorescence microscope after a 24 h treatment of CNE2 by DADS. Cell viability was determined with MTT method. Apoptosis detection was taken to the cells on flowcytometry. The expression of phospho p38 MAPK was measured by Western blotting. RESULTS After treatment with DADS at 50～150 ?mol?L -1 for 24 h,DADS elicited typical apoptotic morphologic changes (chromatic condensation, nucleus fragmentation). The amount of apoptosis cells increased in a concentration dependent manner but cell cycle arrest did not at 50～150 ?mol?L -1 ,incubation of CNE2 with DADS for 24 h also induced phospho p38 MAPK expression in a concentration dependent manner. Interestingly, DADS induced apoptosis was markedly increased by preincubation with SB203580, a specific p38 MAPK inhibitor,and increased the expression of phospho p42/ p44 CCDPK in a concentration dependent manner. CONCLUSION DADS activates p38 MAPK,and phospho p38 MAPK signaling appears to play protective roles in DADS induced apoptosis in CNE2.

Objective To investigate the predictable value of susceptibility weighted imaging (SWI)in hemorrhagic transforma-tion (HT)of ischemic stroke.Methods 48 patients with ischemic stroke were involved.The presence and features of HT on CT, T1 WI,DWI and SWI were observed,as well as the distribution and signal features of cerebral microbleeds (CMBs),abnormal visi-bility of venules on SWI sequence.The correlation between those imaging findings and HT were analyzed.Results HT was detected in 19 of 48 patients (39.6%).The sensibility of T1 WI,DWI,SWI in detecting HT were 68.4%,36.8%,100%,respectively.HT was significantly associated with abnormal visibility of venules within the infarction region.The incidence of HT greatly increased with the aggravation of CMBs.Conclusion SWI can be a sensitive predictor for HT,and it’s helpful in making clinical strategy for ischemic stroke.

Adenoma ; metabolism ; Adrenal Cortex Neoplasms ; metabolism ; Biomarkers, Tumor ; metabolism ; Calcium-Binding Proteins ; metabolism ; Carcinoma, Neuroendocrine ; metabolism ; Humans ; Lung Neoplasms ; metabolism ; Neuroendocrine Cells ; metabolism ; Neuroendocrine Tumors ; metabolism ; Secretagogins ; Small Cell Lung Carcinoma ; metabolism

Animals ; Electromagnetic Fields ; adverse effects ; Female ; Gravidity ; radiation effects ; Humans ; Maternal Exposure ; adverse effects ; Pregnancy

Apoptosis ; Ceramides ; biosynthesis ; Sphingomyelins ; metabolism

Humans ; Medicine ; Medicine, Chinese Traditional ; methods

AIM To investigate actions of total paeony glycoside(TPG) on learning and memory capacity and related products of metabolism of senile mice induced by D galactose. METHODS The subacute senile mouse models induced by injection of D galactose subcutaneously were used. RESULTS TPG could improve the learning and memory capacity of model mice in shuttle test and enhance spatial resolution in water maze test. TPG not only reduced the content of monoamine oxidase(MAO) and inhibited the decrease of cholinesterase(CHE) significantly, but also lessened the level of malondialdehyde(MDA) and inhibited the decrease of superoxide dismutase(SOD) in cerebrum of model mice. TPG still promoted the recovery of lobar atrophy and hypoimmunity of senile mice remarkedly. CONCLUSION TPG possesses obvious effects of improvement on learning, spatial resolution and delaying senility.

Objective To build rat orthotopic liver transplantation model and use this model as an experimental animal model for further research about liver transplantation.Methods Based on the classic two-cuff technique,a variety of skills were integrated,such as abdominal aorta perfusion first before ligation,suprahepatic inferior vena cava single continuous suture,preoperative and postoperative rehydration,hepatic portal vein and infrahepatic vena cava blocked by mosquito's haemostatic forceps.At last,the postoperative survival rates of 2 days and 2 weeks were recorded.Results Donors' operation time was (35±2) min,cuffing time was (7.0±1.5) min,receptors' operation time was (80±15) min,anhepatic phase was (21±3) min.The 2-day survival rate was 92 ％ (46/50) and 2-week survival rate was 86 ％ (43/50).Conclusion To some extent,the improved methods can not only reduce the difficulty of orthotopic liver transplantation operation,but also to create a uniform,stable and reliable orthotopic liver transplantation model.

BACKGROUND:Currently, there is a lack of efficient, non-invasive way to transplant stem cels to the target organ or tissue. Exploring a way to guide targeting transplantation of stem cels and to improve the efficiency of stem cel homing is now one of focuses in the field of stem cels research.
OBJECTIVE: To establish a simple and feasible method to chemicaly modify the cel surface using biotin-streptavidin reaction system, and to evaluate the efficiency of this method to label bone marrow mesenchymal stem cels (BMSCs) and its effects on cel biological functions.
METHODS: Passage 3 BMSCs were obtained by whole bone marrow culture method and verified by flow cytometry. Biotin, streptavidin, sulfonated biotin-N-hydroxy-succinimide were used to equip the adhesion molecule ligand, sialyated LewisX (SLeX), to the BMSCs surface. The labeling rate of BMSCs was assessed using fluorescence microscope, the vitality of BMSCs was evaluated by trypan blue staining, and the proliferation of BMSCs was evaluated by cel counting kit-8 assay. Adipogenic and osteogenic inductions were used to evaluate the effect of the method on the multi-differentiation function of BMSCs.
RESULTS AND CONCLUSION: After culture for 2 weeks, passage 3 BMSCs were obtained and confirmed by expressing CD90, CD29 and lack of CD34, CD45. Biotin, streptavidin, sulfonated biotin-N-hydroxy-succinimide were successfuly used to equip sialyated LewisX (SLeX) to the BMSCs surface and had minor effects on the vitality, proliferation, and differentiation of BMSCs. This method was simple for surface modification and had a high modification rate of 88%. The homing of BMSCs modified by this method to the target organ or tissue could be greatly enhanced. Therefore, this method potentialy could have extensive and important applications.