Objective To investigate the role of cystatin C in hypertensive disorder complicating pregnancy.Methods Peripheral blood from 39 healthy pregnant women,23 patients with mild gestational hypertension ,25 patients with moderate gestational hypertension and 27 patients with severe gestational hypertension,CysC,BUN,UA and crea were determined .Resultss CysC ,BUN,UA and crea were higher in gestational hypertension group. CysC ,BUN,UA and crea were higher in severe gestational hypertension than mild and moderate gestational hypertension group.CysC had higher positive predictive ratio than UA for severe gestational hypertension.Conclusion CysC was a sensitive index to detect the early defection of kidney in severe gestational hypertension combining with other index such as BUN,UA and crea.

Objectives To localize the initiation site of the transcript driven by the cDNA corresponding to SARS - CoV 5 ' - UTR when it act as a promoter. Methods The plasmid pGI3 -5' - UTR, in which a reporter gene Luc was driven by the cDNA corresponding to SARS - CoV 5' -UTR, was transfected into HepG2 cells, and then the total RNA was extracted. Subsequently, the extracted total RNA was reverse - transcribed using a specific primer and subjected to two turns of semi - nested PCR. The PCR product was cloned into a T - vector for sequencing. Results A 440bps product was harvested by reverse - transcription and two turns of semi - nested PCR, and the 56th nucleotide of SARS - CoV 5 ' - UTR was found being the initiation site, followed downstream with a highly conserved transcription - regulating sequence (TRS). Conclusion The 56th nucleotide and its downstream TRS of SARS - CoV 5 ' - UTR is key roles in regulating gene transcription.

Objective To investigate the efficacy of Xuebijing injection on the septic shock and its impact on the patient's PCT and CRP.Methods According to the digital table,60 patients with septic shock were divided into two groups according to random number table methods.30 patients in the control group were only given conventional treatment,while the research group were used of Xuebijing injection in addition.The clinical efficacy was compared after treatment and the PCT and CRP levels were detected before and 7d after treatment.The days of hosoitalization were recorded.Results The total effective rate of the study group was 70％,significantly higher than 40％ of the control group's (x2 =5.45,P ＜ 0.05),and the study group's PCT and C RP levels were significantly lower than before (t =33.54,48.02,all P ＜ 0.05),after treatment 7d and the extent significantly greater than the control group (t =6.68,7.67,all P ＜ 0.05).Furthermore,the number of days of study group's hospitalization was significantly lower than that of control group(t =10.21,P ＜ 0.05).Conclusion Septic shock treated by Xuebijing injection has a significant effect as well as a greater impact on the PCT and CRP,which is worthy of clinical use.

OBJECTIVE To find out the situation of peri-operational lower respiratory tract infection in inpatients with congenital heart disease of left to right shunt and provide evidence for clinical prevention and treatment.METHODS Peri-operational lower respiratory tract nosocomial infection in 2 564 cases of congenital heart disease with left to right shunt during Jan 2003 to Dec 2005 was analyzed retrospectively.RESULTS The incidence rate of lower respiratory tract infection was 11.27% among 2 564 cases.The incidence rate was 15.51% in patients less than 2 years old.The most common pathogen was Pseudomonas aeruginosa(18.60%).The death rate in cases with lower respiratory tract nosocomial infection was higher than these non-infection cases.CONCLUSIONS Pulmonary congestion,less than 2 years old,mechanical ventilation and antibiotics abuse are main causes of lower respiratory tract nosocomial infection in patients with congenital heart disease with left to right shunt.Nosocomial infection can increase death rate.

Objective To observe effects of BMP-4 gene combined with TGF-β1 in repairing rabbit femur defect resulted from firearm wound. Methods The femur defect was made with firearm steel ball. Plasmid encoded BMP-4 gene identified in vitro and TGF-β1 were injected into the tissue of upper, lower and central parts of the defects at the second week after wound. The mRNA and protein expressions of BMP-4 in vivo were detected by real time-polymerase chain reaction (RT-PCR) and Western blot. Activity of alkaline phosphatase (ALP) and calcium content were measured for evaluating osteogenetic ability. The process and quality of osteogenesis were determined by pathological and X-ray examinations. Results mRNA and protein of BMP-4 could continually express for six weeks in vivo after injection. Activity of ALP in the experimental group was increased to ( 13.17 ±0.51 ) U/100 ml at the 8th week, which was significantly higher than (8.77 ± 0.44) U/100 ml in the control group, indicating that osteogenetic ability was markedly enhanced, which accorded with determination of calcium content. Pathological observation and X-ray proved prominent improvement of osteogenesis, with a shorter time and better quality, in the experimental group. Conclusion BMP-4/TGF-β1 can promote repair of firearm femur defect.

The etiology of nasopharyngeal carcinoma is still not very clear.Epigenetics is proved to play an important role in the occurrence and development of nasopharyngeal carcinoma (NPC).Detection of epigenetics can serve as molecular index of NPC,and it is advantageous to the prognosis and disease of NPC.Different intervention measures in the epigenetics can be used as a new treatment of NPC,as well as the development of new NPC radiotherapy sensitization agent and new drugs.Study of epigenetics changes in nasopharyngeal carcinoma provides a new idea for the diagnosis and treatment in NPC and so on.

It has been suggested that some unusual molecules and genes might be involved in the development of soft tissue sarcomas (STS) and that drugs targeting specific molecules and genes would selectively kill tumor cells, which have been demonstrated to be more effective approach with less side effect than traditional chemotherapy. However, most of the effective targets of STS are currently not elucidated, and the effects of trial-target therapy are mostly not satisfactory, thus multiple targeting drugs might guide a future direction for tumor therapy.

BACKGROUND:At present, heterologous serum as a medium is a common method for culture of bone marrow mesenchymal stem cells, but it is limited by the disease transmission between species, the potential immune rejection and even controversial ethic issues. This method is also contrary to the requirements of the Ministry of Health. Autologous platelet-rich plasma is a kind of whole blood extract, containing a variety of growth factors. OBJECTIVE:To explore the osteogenic differentiation of rabbit bone marrow mesenchymal stem cells cultured in autologous platelet rich plasma alternative to traditional heterogeneous serum-free culture. METHODS:8 mL bone marrow from the rabbit iliac crest was extracted and anti-coagulated with heparin, and then bone marrow mesenchymal stem cells were isolated using density gradient centrifugation. The cells were divided into autologous platelet rich plasma group (10%autologous platelet rich plasma) and fetal bovine serum group (10%fetal bovine serum). At the passage 4, the cells in the two groups were respectively subdivided into experimental and control groups. Experimental groups were subjected to osteogenic induction, while no change was done in the control groups. cellproliferation was determined by using growth curves;the activity of alkaline phosphatase was detected to adjust the osteogenic differentiation of cells in different groups. RESULTS AND CONCLUSION:Bone marrow mesenchymal stem cells at different generations al showed good proliferation. At 12 days of autologous platelet rich plasma culture, the activity of alkaline phosphatase in the passage 4 cells in the experimental group was significantly higher than that in the control group;while the activity of alkaline phosphatase in the autologous platelet rich plasma group was significantly higher than that in the fetal bovine serum group (P<0.01). These findings indicate that autologous platelet rich plasma as a substitute of xenogeneic serum for culture of bone marrow mesenchymal stem cells is a method characterized as safe and reliable, simple operation, high-purity active induction.

BACKGROUND:The human telomerase reverse transcriptase (hTERT) is one of preferred growth factors for regulating proliferation and directional differentiation, has multiple biological effects, and laids the foundation for geneticaly engineered immortalized stem cel lines. OBJECTIVE: To investigate the effect ofhTERT gene-modified umbilical cord mesenchymal stem cel transplantation on acute kidney injury induced by ischemia and reperfusion in rats. METHODS:The human umbilical cord mesenchymal stem cels were cultured in vitro. Rat models of acute kidney injury induced by ischemia and reperfusion were established. Rat models were randomly divided into three groups. Rats in the control group were injected with 1 mL L-DMEM medium through caudal vein. Rats in the negative transfection group were injected with 1 mL umbilical cord mesenchymal stem cel suspension after empty virus transfection through caudal vein. Rats in the hTERT transfection group were injected with 1 mL umbilical cord mesenchymal stem cel suspension after PLXSN-hTERT transfection through caudal vein. RESULTS AND CONCLUSION:At 3 and 28 days after transplantation, hematoxylin-eosin staining showed renal tubular damage score in the hTERT transfection group < negative transfection group < control group (P < 0.05). At 28 days after transplantation, the number of CM-Dil-positive cels in the hTERT transfection group > negative transfection group > control group (P < 0.05). At 1, 3, 14, and 28 days, serum creatinine and urea nitrogen levels in the hTERT transfection group < negative transfection group < control group (P < 0.05). The results confirm that hTERT gene-modified umbilical cord mesenchymal stem cel transplantation has a significant repair effect on acute kidney injury in rats.

BACKGROUND:Treatment after intracerebral hemorrhage can effectively suppress immune function. The immune suppression after ischemic stroke has been studied in detail.
OBJECTIVE:To construct an immunosuppressed rat model after cerebral hemorrhage, and assess its stability.
METHODS:Sixty Wistar rats were randomly divided into control group, sham group, and cerebral hemorrhage group, with 20 rats in each group. Rat models of acute cerebral hemorrhage were established by 50μL arterial blood injection in the rat basal ganglia. Rats in the sham group were injected with 50μL of saline, and the operation was identical to cerebral hemorrhage model. Rats in the control group received no treatment. At 24, 48, 72 and 96 hours after model establishment, leukocytes, lymphocytes, and lymphocyte percentage were analyzed by blood analyzer. Enzyme linked immunosorbent assay was used to determine the levels of serum proinflammatory cytokine interleukin-6 and anti-inflammatory cytokine transforming growth factorβin rats. Dissected rat spleen tissue was subjected to histological and histopathological detection. RT-PCR and western blotting were utilized to measure changes in transforming growth factorβ, interleukin-6 gene and protein expression in the spleen.
RESULTS AND CONCLUSION:(1) Compared with the sham group and control group, leukocyte number was significantly higher, but lymphocyte percentage gradual y reduced in the cerebral hemorrhage group at 24, 48, 72 and 96 hours (P<0.05). (2) Compared with the sham group and control group, interleukin-6 levels in the blood and spleen were higher at 24 hours, peaked at 72 hours, and decreased at 96 hours in the cerebral hemorrhage group (P<0.05). (3) Compared with the sham group and control group, transforming growth factorβexpression was lower at 24 hours, gradual y increased at 72 hours, and higher at 96 hours in the rat blood and spleen of the cerebral hemorrhage group (P<0.05). (4) These findings indicate that immune function excitement first appeared after cerebral hemorrhage, and immune suppression appeared at 96 hours, indicating successful model establishment and good stability.