Neural stem cells are a study hot spot in neurobiological science and neurosurgery in the near future. The transplantation of neural stem cells already became a new way which be used for treating the injury and degenerative disease in the nervous system, because of the self-renewal and cell differentiation bionomics. However, how to get massive neural stem cells, which can be used in animal experiment and clinical application, has constrainted the development of stem cell technique.This article introduced the harvesting methods of embryonic stem cells, adult neural stem cells and mesenchymal stem cells, in order to lead cellular transplant treatment into clinical treatment plan by a safe and effective mode.

Endotoxemia is due to the infection of bacteria or lesions which release a lot of toxins into the blood,or the infusing of large amount of endotoxin-contaminated liquid.It can cause systemic inflammatory response syndrome,sepsis,or multiple organ dysfunction syndrome.Endotoxemia is a common and complex problem in modern emergency medicine.Early diagnosis and timely blocking not only can prevent further infection but also plays a positive role in the prevention and treatment of sepsis and its complications.In recent years,progresses have been made in the treatments of endotoxemia by hemoporfusion.The direct adsorption of endotoxin and inflammatory cytokines in blood can quickly reduce their concentration.This can not only weaken their own activity but also inhibit the release of other harmful cytokines,so as to improve the symptoms of infection.So far,the specific hishaffinity adsorbents having the clinical value are still at the exploratory stage.Although these materials were found effective in the treatments of endotoxemia,in-depth study need to be carried out on their clinical criteria in order to acquiremore satisfied results.

Objective To introduce the important anti-bioterrorism exercises in some countries and to find out what we can learn from those exercises, then to service our country on the preparation of anti-bioterrorism exercise. Methods The introductions and reports concerning anti-bioterrorism exercises in some countries were searched from internet and papers, then the data were analyzed and summarized, some commonness were drown out. Results Some developed countries pay attention to anti-bioterrorism exercise. Some problems and countermoves can be found by those exercises. Conclusions Our country is also facing the threat of bioterrorism. Improving the biodefence ability is a challenge to our country. Our country has done some exercise, but biodefence exercise is few. Our country needs to develop some anti-bioterrorism measures in which we need focus on: decision-making process, cooperation, international collaboration, communication, disease control and prevention, medical treatment, drug and vaccine preparation.

Electret filtration material is a kind of promising new air filtration material due to the advantages of high filtration efficiency,low flow resistance,power saving and anti-bacteria.In the paper the concept of electret,primary raw material of electret filtration material,the characteristics of electret filter material,charging method to make electret and the influence of charging technology on the charge storage characteristic of electret filter material were introduced,the application of electret filtration material on air purification was described also.

To summarize the operative technique and the clinical value of sentinel lymph node biopsy (SLNB) in breast cancer,a literature review was made on SLNB. The conclusion is as follows:(1)As compared with blue dye or radioactive tracer, combining the two techniques can increase the positive detection rate and decrease the false-negative rate of the sentinel lymph nodes .(2) Pathological examination by serial sectioning, IHC or RT-PCR increases the detection rate of micrometastases, which is helpful for the accurate clinical staging of auxillary lymph nodes. (3)SLNB is a simple procedure with minimal morbidity and highly predictive value of the status of auxillary lymph nodes.It has emerged as a potential substitute for the routine auxillary lymph node dissection.

Amino acids (AA) as substrates of gluconeogenesis could promote endogenous glucose production.Some AA can enhance insulin secretion. Recently,many studies have found that some AA can also activate mammalian target of rapamycin-S6 kinase 1 ( mTOR-S6K1 ) pathway,resulting in maintaining pancreatic β cell function on one hand,and on the other hand,inhibiting insulin signal transduction of insulin-sensitive cells and thus causing insulin resistance.

Cholangiopancreatography, Endoscopic Retrograde ; Cholangiopancreatography, Magnetic Resonance ; Endosonography ; Humans ; Lymph Node Excision ; Neoplasm Staging ; Pancreatectomy ; methods ; Pancreatic Neoplasms ; diagnosis ; pathology ; surgery ; Tomography, X-Ray Computed ; methods

The changes of morphology, ATP and malonaldehyde (MDA) contents, xanthine oxidase (XO) activity as well as the glutathione peroxidase (GSH-px) activity of rabbit aortic endothelial cells under hyperoxia (100% O_2) for 0-72 hours were studied. We found that cellular morphological changes including swelling, shape variation after hyperoxia were time-dependent; after a temporarily increasing (24hr)(P

Objective To explore the efficacy and the prognostic factors of docetaxel combined with gemcitabine for patients with recurrent or metastatic breast cancer.Methods Forty-six patients with recurrent or metastatic breast cancer received docetaxel combined with gemcitabine regimen (docetaxel 75 mg/m2,intravenous drip,dl ; gemcitabine 1000 mg/m2,intravenous drip,dl,d8; The regimen was repeated every threeweeks for 3-6 cycles).The response rate (RR) was evaluated after 2 cycles,and the overall survival (OS)and progress-free survival (PFS) were recorded.Single factor chi square test and multivariate Cox proportion hazard model were used to evaluate the relationship between clinic pathologic features and RR,OS.Results All patients completed 3-6 cycls chemotherapy.The overall response rate was 56.5％ (26/46) and disease control rate was 82.6％ (38/46),with 4 patients of complete remission (8.7％),22 patients of partial remission (47.8％),12 patients of stable disease (26.1％) and 8 patients of progressive disease (17.4％).The median OS of 46 patients was 16.0 months (95％ CI:6.5-25.5 months) and PFS was 8.0 months (95％ CI:6.2-9.8 months).Single factor analysis showed that age,menopausal status,PS score,the number of metastasis had correhtions with RR (P ＜ 0.05) ; Cox proportion hazard model also showed that age,menopausal status,PS score,the number of metastasis had correlations with OS,and were the prognostic factors (P ＜0.05).The most frequent treatment-related adverse events were myelosuppression,gastrointestinal reaction,rash,alopecia,fatigue,and were tolerable (Ⅰ-Ⅱ level).Condusion Docetaxel combined with gemcitabine is effective and safe in the treatment of recurrent or metastatic breast cancer.Age,menopausal status,PS score and the number of metastasis are the prognostic factors for efficacy of docetaxel combined with gemcitabine regimen.

Research on dual-use of life sciences can promote human health and social development .However,potential harm is also gradually recognized .This article introduces the definition of dual-use life sciences research , major develop-ments and risk samples , trends of development and surveillance , and proposes some considerations in future efforts to strengthen the oversight of dual-use life sciences research .