Object To investigate the reason of the low germination and sprout rates by studying on inhibitory activities of the crude extracts of the seed of the dried root of Saposhnikovia divaricata (Turcz.) Schischk (DRSD) on Brassica, wheat and the seed of DRSD. Methods The ether extract and residue of the crude extract were prepared and treated by paper chromatography. The inhibitory activities of different fractions with different Rf value were determined. Effect of steeping the seed in warm water at 41 ℃ and 45 ℃ for different periods of time was also studied, respectively. Results There are intrinsic inhibitor in the seed of DRSD with strong activity. The portion of its ether extract with Rf 0.6 showed the strongest inhibitory activity for the germination of Brassica seed. The crude extract of the seed of DRSD also has the stronger inhibitory activity to the germination and growth of tender root of S. divaricata and has the same effect on aerial part of wheat sprouts. Steeping with warm water and solvent can remove most of the intrinsic inhibitor. Conclusion Intrinsic inhibitor in the seed of DRSD is the main factor that results in the low germination and sprouting slowly after seeding.

10 adult female rats were used to study blast injuries of the air-way and lung. The conclusions are as follows. 1. There was significant difference in arterial blood gas analysis between the normal control and injury group. 2. The une-venness in the lung damage, bleeding, tear of the alveolar septa induced by the air shock wave was predominant, by scanning electron microscopy (SEM) as well as by the light microscopy (LM) . The bleeding may be due to the capillary rupture of alveolar septa. The' rope-like' structures seen might represent the fibre component in the septa which had more resistance to the local force and remained after the other components were wiped away by explosion. 3. Striping and fissure of the epithelium of trachea and bronchi of the injured group were detected. 4. The pathological changes observed with SEM were compared to those with LM.

The morphological changes of the rat lung with blast injury are quantitified with a stereological method. After blast the pulmonary capillary volume and internal surface area decreased significantly, arithrnatic and harmonic mean thickness of the air-blood barrier, the volumes of P'MN and platelet in capillury increased remarkably. The morphometric lung diffusion capacity of oxygen (DLO2) is reduced markedly mainly due to the decrease of diffusion capacity of air-blood barrier and erythrocyte. The change of DLO2 is closely correlated with the arterial blood oxygen pressure, indicated that the damage of pulmonary capillary is one of the main causes of alveolar bleeding and the early respiratory insufficiency. A mathematic relation can be established between the intensity of the blast wave and the corresponding morphological changes of the injured lungs.

Semaphorins is the one of guidance molecule families.It is proved to have wide physiological function in the development of neutron and play important role in the pathogenesis of retinal degenerative diseases,gangliocyte apoptosis-related diseases and neovascularization.Previous studies showed that Semaphorins distribute in the cornea,lens and retina.Semaphorins play important role in the development of retina,visual system,cornea nerve and reduce the death of retinal ganglion cells(RGCs)caused by glaucoma,retinal detachment and hypoxic ischemic optic neuropathy.Semaphorin family-related gene mutation may be associated with retinal degenerative diseases.Some of the members could also inhibit angiogenesis.Since semaphorins and its receptors participate in the development of the vasculature and nervous systems,they are implied to be the potential new target of ophthalmopathic treatment.The current ptogress in structure and functions of the semaphorin family along with their relationship with ophthalmopathy were summarized in this study.

Object To provide an economical and practical technique for planting of Radix Gentianae in large scale Methods Indoor artificial pregermination, insemination in carboxymethyl cellulose suspension, irrigation with micro sprayer and no shelter growing technique of seedling Results The seedling cost is 60% lower than that of conventional technique In each square meter 3 000 seedlings were grown Conclusion This technique can be widely applied.

OBJECTIVE:To discuss the research and clinical application of drug eluting stents,in addition,to explore the effects of drug eluting stents on preventing and curing coronary restenosis. METHODS:The databases of Medline and Chinese CNKI were retrieved using computer from 1993 and 2009,and the literature was selected according to inclusion and exclusion criteria. The rapamycin eluting stent and paclitaxel eluting stent were widely used in preventing and curing in stent restenosis,the problems existed in this process were discussed. RESULTS:Drug eluting stents could prevent in stent restenosis following stent implantation,however,the problems such as poor adherence or stent fracture still occurred in clinic. CONCLUSION:Drug eluting stents exhibit efficiency and safety in preventing restenosis,but there still existed problems need to further explore.

With the rapid development of our country,people are facing more and more psychological problems.It has been demonstrated that persistent stress and depression,which leads to continuously elevated levels of stress hormones,might eventually compromise host defenses against bacterial or viral infection while increasing the reoccurance of autoimmunity and the incidence of malignancy/metastasis.Even though the molecular mechanisms by which chronic psychological stress inhibits the effector subsets in the immune system have been partially disclosed,it remains elusive whether chronic psychological stress also affects the regulatory subsets and if yes,what are the underlying mechanisms.Here,we review the findings in this field.

OBJECTIVE To improve the administrative and controlling quality of hospital acquired infection(HAI),practice all kinds of works of HAI and decrease the incidence rate of it.METHODS We should strengthen leading power,perfect constitution and administration web,make project workable,intensify education of HAI,improve all medical staff administrative consciousness and whole quality of professional people of HAI,reinforce precaution and manipulation,and erect system of informational feedback.RESULTS All kinds of works of HAI were improved and medical staff administrative consciousness of HAI was enhanced through administration,and we could ensure the effects of sterilizing and killing bacteria.CONCLUSIONS We could carry out all kinds of institutions of HAI through administrative system of standard-check-reward and punish.

Objective To explore clinical characteristics and pathogenic gene of lisencephaly. Methods The clinical manifestation, laboratory examination and gene detection results of lisencephaly in two children were analyzed retrospectively, and relevant literature were reviewed. Results Two male children with lisencephaly are at ages of 7 months, and 3 years and 4 months respectively. Both of them were admitted to hospital due to epilepsy and loss of consciousness at the time of attack. There was no obvious abnormality in laboratory examination. Both of their EEG indicated epileptic wave. Cranial MRI showed lissencelphaly. Gene analysis showed that there was a heterozygous mutation of IVS3-1G>A in PAFAH1B1 gene in a child, which resulted in the deletion of exon 4 in mRNA level by functional analysis. No mutations were found in the parents of the child. The other one had c.274A>G mutation (p.K92E) in PAFAH1B1 gene, which has not been reported before, and his parents were normal. Conclusion Patients with lissencelphaly may combine with epilepsy, and the PAFAH1B1 gene mutation is the common cause.

Objective To compare the clinical effect between SMA concentrator and tension band internal fixation for the treatment of patellar comminuted facture. Methods Retrospective analysis of 132 cases of patellar fracture surgery patients,72 cases of them with internal fixation by SMA concentrator,the other 60cases with tension band internal fixation. Results All patients were followed up for 6 to 16 months. The recovery rate of sma concertrator was 95.8% and that of tension hard internal fixation was 88. 3%. Conclusion Using SMA concentrator to treat patellar comminuted fracture was a better treatment.