Adult ; Female ; Hemangioma, Cavernous ; surgery ; Humans ; Nose ; surgery ; Orbit ; surgery ; Orbital Neoplasms ; surgery

The ability of repair and regeneration of central nervous system (CNS) is limited. So many researchers applied themselves to search a valuable cell resource for treating severe diseases of the CNS. Several studies from different laboratories have recently reported that stem cells derived from human umbilical cord blood under certain in vitro conditions can manifest neural features that resemble features of neural-derived cells. In vivo transplantation studies have shown that these stem cells persistently engraft in the CNS, some engrafted cells acquire the characteristics of neurons and glia, and improve functional recovery after central nervous system injury. The existence of stem/progenitor cells with previously unappreciated proliferation and differentiation potential in umbilical cord blood raise the possibility that cord blood may provide an efficient source of cells differentiating into the neural lineage, with a potential to be employed in the therapy of human CNS diseases. The achievement and focuses on the mechanisms and modulation of induction of differentiation and in vitro and in vivo studies in this field was reviewed.

Objective To analyze the etiologies,clinical characteristics and prognostic factors of patients with acute renal failure(ARF)admitted to the hospital at high altitude.Method This retrospective study included clinical data of patients with acute renal failure in the General Hospital of Tibet Military Command from May 2001 to April,2006.Results There were 85 male patients and 63 female patients with mean age(42.4?18.1)years old.Among 148 patients with acquired ARF,52.7% was iatrogenic or nosoeomal origin, demonstrating a trend of increasing.The ARF included pre-renal(n=48,32.4%),renal parenchymal(n= 90,60.8%)and post-renal(n=10,6.8%)in origin.Acute high altitude sickness(n=20)was the major causes of pre-renal ARF.Renal parenchymal ARF could be classified into glomerular vascular lesions(n=24), acute tubular necrosis(n=53),acute interstitial nephritides(n=12),and contusion of unitesticle(n=1).of 90 cases of renal parenchymal ARF,39 patients(43.3%)were induced by medicines.Lithiasis was the major causes of post-renal ARF.The mortality of ARF in our study was 42.6%.The mortality of patients contracted ARF in hospital was much higher than that of patients community ARF in community(55.1 vs 23.6%;P=0.01). There was no significant differences of the mortality between the patients with and without dialysis treatment. Univariate analysis showed that prognosis was correlated with age,the presence of hematuria and oliguria or anuria Hb,and the number of organ system failures.The logistic regression showed that age,Hb and the number of organ system dysfunction were the predictors of mortality.Conlusions The major causes of ARF at high altitude were acute high altitude sickness and the use of medicines with nephrotoxicity.The morbility and mortality of nosocomisl ARF increased significantly.Prevention of MODS is a key management to decrease mortality in severe ARF.

Bronchi ; Child, Preschool ; Diagnostic Errors ; Foreign Bodies ; diagnosis ; Humans ; Lung Diseases ; congenital ; diagnosis ; Male

Background Hypertension is a multigenetic inheritable disease.Gene therapy with long-term effects and less side effects by regulating gene expression has been shown to be a potential and exciting prospect. Objective To investigate the effects of RNA interference(RNAi)targeting angiotensin-converting enzyme(ACE)on the blood pressure and ACE expression in kidney of spontaneously hypertensive rats(SHR).Methods SHR were randomly to receive placebo(n=12)or control adenovirus Ad5-EGFP)or a single injection of recombinant adenovi- ral vectors,Ad5-EGFP-ACE-shRNA(n=12,iv).Normotensive Wistar-Kyoto rats(WKY)were served as normal control group.SBP was measured before and after the intervention.Aorta,lung,myocardium and kidney were studied using fluorescence microscope to identify the sites of Ad5-EGFP-ACE-shRNA.Expressions of ACE mRNA and protein in kidney were evaluated by RT-PCR and Western blot.Results SBP of the treat group was effectively reduced by 19.0?3.2 mmHg at the 3rd day,and 22.1?3.3 mmHg at the 13th day of the experiment.The anti- hypertensive effect significant remained at least for 14 days.On the contrary,increase in BP was shown in placebo and the adenovirus control group.Compared with placebo or adenovirus control rats,ACE mRNA expression level in kidney of the treated rats was lower by 61.1% and 62.3% respectively,with ACE protein expression level lower- ing by 56.2% and 53.30% as well(ail P0.05). Conclusion RNA interference targeting ACE gene inhibits the expressions of ACE mRNA and protein.A single dose injection resulted in a prolonged decrease in BP.The evidence of strong antihypertensive effect by genetic therapy justifies efforts for further investigation.

Objective To estimate curative effect of reconstruction of rabbit knee joint cartilage defect with the homogeneitic tissue engineered cartilages.Methods The chondrocytes were isolated and collected from articular cartilages of eight New Zealand white rabbits.The tissue engineered cartilages after culturing chondrocytes and atelocollogen for two days.Cartilage defects were created in both keen joint of twenty-six rab- bits.Complexes of chodrocytes and atelocollagen was grafted into the defect of left knee joint at once as experi- mental group,and no implantation were served as control.General and histological examination were respec- tively performed in both group at four weeks and eight weeks after surgery.Results After implantation,the defects were filled with cartilaginous tissue in experiment group,while there were only tissue in control group. Histologically,defective areas were filled with chondrocytes in experiment group,but only fibroblast in control group.Conclusion The implantation of the tissue engineered cartilages contenting with chondrocytes and atelocollogen can effectively improve reconstruction of rabbit knee joint.

Objective To investigate the effects of low frequency ultrasound (LFU) on the proliferation and apoptosis of smooth muscle cells (SMCs) in rabbits with carotid atherosclerosis(CA).Methods CA models were established in 30 New Zealand rabbits using a high fat diet and air-drying.They were randomly divided into a control group and four LFU groups:group A received 0.5 W/cm~2 LFU for 5 min/d,group B 0.5 W/cm~2 for 10 min/d, group C 1 W/cm~2,5 min/d,and group D 1 W/cm~2,10 min/d.The rabbits' carotid arteries were autopsied after 20 d of the LFU treatment.The expression of PCNA and TUNEL staining were used to explore the proliferation and apopto- sis of SMCs,and the proliferation rates (PRs) and apoptosis rates (ARs) were calculated.Results Compared with the control group,the PRs in groups B,C and D were significantly lower,while the ARs in groups B,C and D were significantly higher.There was no significant difference in ARs or PRs among groups B,C and D.Con- clusion LFU can induce SMC apoptosis and inhibit SMC proliferation in rabbits with CA.

OBJECTIVETo explore the effect of Chinese drugs for Pi strengthening Shen benefiting (CDPSSB) on the immunity function of HIV/AIDS patients' specific T cells.

METHODSTotally 20 patients were randomly recruited from the treated group [treated by CDPSSB combined highly active anti-retroviral therapy (HAART)] and 23 patients were randomly recruited from the control group (treated by HAART alone). All patients were follow-up infected persons form You'an Hospital between from June 2010 to June 2012. CD4+ T absolute counts and HIV viral load were detected. Meanwhile, HIV whole gene overlapping peptides were used as stimulating antigen. The response intensity of HIV specific T cells was detected in the two groups.

RESULTSThere was no statistical difference in CD4 T absolute counts or HIV viral load between the two groups (P > 0.05). The response intensity of HIV specific T cells was significantly enhanced in the treated group, when compared with the control group (P < 0.05). Along with elongation of treatment time (6, 12, 18, and 24 months) in the treated group, the response intensity of HIV specific T cells showed enhancing tendency, but there was no statistical difference among these time points (P > 0.05).

CONCLUSIONCDPSSB could enhance improve the immunity function of HIV specific T cells, which might be one of its mechanisms.

Adult ; Antiretroviral Therapy, Highly Active ; CD4 Lymphocyte Count ; Drugs, Chinese Herbal ; pharmacology ; Female ; HIV Infections ; drug therapy ; immunology ; Humans ; Male ; Middle Aged ; T-Lymphocytes ; drug effects ; immunology ; Viral Load

Adult ; Female ; HIV Infections ; physiopathology ; virology ; HIV-1 ; Hepatitis B ; physiopathology ; virology ; Hepatitis B virus ; Humans ; Liver ; pathology ; physiopathology ; Liver Function Tests ; Male ; Middle Aged ; Superinfection ; pathology ; virology ; Viral Load

OBJECTIVE: To evaluate the association between Cystatin C levels change and the clinical outcomes of critically ill patients.METHODS: There were altogether 4642 patients in intensive care unit(ICU)of West China Hospital of Sichuan university from 28 th August 2009 to 16 th April 2010,and their general conditions were recorded,including sex,age,and being with or without diabetes mellitus;then the database was established accordingly.The patients were divided into four groups according to the change of Cys C values in ICU:high increase(>1 mg/L),slight increase(≤1 mg/L),high decrease(>1 mg/L)and slight decrease(≤1 mg/L).The difference in 30-day mortality in patients were compared.The patients were followed up for 8 years.RESULTS: One thousand and thirty-six patients were included in this study,272 cases died within 30 days,with the highest in patients of the group with high increase of Cystatin C(77.9%),followed the high-decrease group(33.3%);the mortality rate of group with slight decrease was the lowest among the four groups(16.5%).The 8-year survival of 764 patients who did not die within 30 days was 54.58%.CONCLUSION: The change of Cystatin C value is closely related to the 30-day mortality of critically ill patients.The lowest 30-day mortality of critically ill patients is the group with slight decrease of Cystatin C.