Humans ; Rhinitis, Allergic ; Rhinitis, Allergic, Perennial ; Rhinitis, Allergic, Seasonal

Objective To observe the changes of osteoblasts and vascularization during osteogenesis by tissue engineering technique under the electron microscope and study the feasibility of improving vascularization of the tissue engineering bone by using the small intestine submucosa(SIS) as the scaffold. Methods The bone mesenchymal stem cells(BMSCs) were isolated by using the gradient centrifuge method.BMSCs were seeded in the SIS.The scaffold-cell constructs were cultured in vitro for two weeks.There were no cells on the SIS as control.They were implanted subcutaneously in the dorsa of the athymic mice.The implants were harvested after(in vivo) incubation for 4,8 and 12 weeks.The changes of osteoblasts and vascularization were observed under the transmission electron microscope and the scanning electron microscope. Results The BMSCs grew quite well.BMSCs differentiated on the surface of the SIS and secreted a great deal of extracellular matrices.The scaffold-cell constructs formed a lot of bone and vessels in vivo.The scaffold degraded after 12 weeks.No osteoblasts but vascularization and fibroblasts were observed as control. Conclusion SIS can be used as the scaffold for constructing tissue engineering bone as it can improve the formation of bone and vessels in vivo.

Bronchitis ; diagnosis ; Diagnostic Errors ; Humans ; Infant ; Male

The Uncariae Ramulus Cum Uncis is a commonly used traditional Chinese medicine. In recent years, many studies have revealed its prominent neuroprotection function. The active ingredients in Uncariae Ramulus Cum Uncis could protect the nervous system in a multi-path and multi-target manner. Uncariae Ramulus Cum Uncis shows the neuroprotective effect by resisting oxidation, scavenging free radicals, modulating neurotransmitters and their related receptors, regulating the inflammatory factors and their related pathways, attenuating neuron apoptosis, reducing intracellular Ca2+ overloads and mitigating neurodegeneration. In this paper, the authors summarized the advance in studies on neuroprotective mechanisms of Uncariae Ramulus Cum Uncis.
Animals ; Calcium ; metabolism ; Drugs, Chinese Herbal ; pharmacology ; Free Radical Scavengers ; pharmacology ; Humans ; Inflammation Mediators ; metabolism ; Neuroprotective Agents ; pharmacology ; Neurotransmitter Agents ; metabolism ; Uncaria ; chemistry

Cholesteatoma, Middle Ear ; Humans ; Male ; Young Adult

The fermentation conditions of high 1.3 -propanediol-producing strain E. aero-N-56 were determined in this Paper. The optimum conditions of producing 1.3-PD were: initial pH 7.0, temperature 30℃, culture time 48 h, inoculum size 9% . Under the optimum conditions: the 1.3-PD productivity reached up to 23.68 g/L?d; the 1,3-PD yield of E. aero-N-56 up to 47.36 g/L in 30 L fermentor.

Objective To observe adhesion and growth of Sehwann cells(SCs) on small intestinal submueosa(SIS) and study the bioeompatibility of SIS with SCs.Methods The SCs of SD neonate rat were isolated and cultured in vitro,then were seeded on prepared SIS.At different times,the adhesion,growth and proliferation of SCs on SIS were observed by phase contrast microscope,histological examination,scanning e- lectron microscope and transmission electron microscope.Results By phase contrast microscope,SCs grew well on the edge of SIS after 3 and 5 days.SCs adhered tightly on the surface of SIS after 5 days through histo- logical examination.By scanning electron microscope,on the surface of SIS,SCs grew and adhered actively, prominence of cells body were obvious.They connected end-to-end with each other or arranged in clusters. Protein granules were secreted on cells surface.By transmission electron microscope,SCs grew in good condi- tion and adhered tightly on the surface of SIS.At the interface of SCs and SIS,prominence was seen to contact with SIS in the bottom of cell body.Conclusion SCs are able to adhere and grow well on the surface of SIS.As a scaffold,SIS has good biocompatibility with SCs.

Objective:To investigate the expression of HIF-1?and its relationship with angiogenesis in osteosarcoma.Methods: Osteosarcoma MG-63 cells were cultured in vitro under hypoxia and mimic hypoxia conditions.Thirty paraffin-embedded osteosarcoma tissues and 20 fresh frozen osteosarcoma specimens were collected.The mRNA and protein expression of HIF-1?and VEGF were detected by RT-PCR,Western blotting,ELISA,and immunohistochemistry methods.The mean vessel density(MVD)were also calculated.Results:The mRNA level of HIF-1?had no change under hypoxia and minic hypoxia conditions,whereas the protein expression was increased dramaticaly.The mRNA and protein expression of VEGF was significantly increased under hypoxia and minic hypoxia conditions.The positive rate of HIF-1?mRNA(90%)and VEGF(100%)in 20 fresh frozen tissues were higher than those of the para-tumor tissues(P

Objective To discuss the optimal timing of fixation for femoral shaft fractures with concomitant head injuries. MethodsEarly and delayed complications,mortality rate,interval of ICU and duration of hospital stay were compared among 137 patients with head injuries,so as to evaluate the curative effect of early fixation of femoral shaft fracture(n=56) and delayed fixation(n=81).Results Early fixation group enjoyed advantages in the interval of ICU,duration of hospital stay,associated shock and infection rate over the delayed fixation group(P

A survey on compliance with topical medication and the relevant factors were conducted in 190 patients with glaucoma in Miaohang Township, Baoshan County of Shanghai. All patients used 1 or more topical ocular hypotensive medications for at least 6 months and a special questionnaire was designed for the survey. The survey revealed that the overall non-compliance rate was 54. 7% (104/190) in this group of patients; which was closely correlated with age, medication application time and the extent of visual defect ( OR = 2. 550, 0. 225 and 0. 342, P ＜ 0. 05 ). Education levels, gender of patients, glaucoma type, number of daily medication, medication types and the stability of diseases were not correlated with the compliance.