Lymphoma is a malignancy of mature lymphocytes. Signalling through the B cell receptor ( BCR ) is central to the development and maintenance of B cells. In light of the numer-ous proliferative and survival pathways activated downstream of the BCR, it comes as no surprise that malignant B cells would co-opt this receptor to promote their own growth and survival. Compounds that inhibit various components of this pathway, in-cluding spleen tyrosine kinase(Syk), Bruton’s tyrosine kinase (Btk), and phosphoinositol-3 kinase(PI3K), have been devel-oped. In this paper,the B-cell receptor signaling and its targeted inhibitors of lymphoid malignancies are reviewed.

Objective To investigate the effects of inositol hexaphosphate (IP6) on proliferation of human osteosarcoma cell line MG-63 and primary cultured osteoblasts so as to explore the optimal concentration for achieving anti-cancer effects.Methods We primary cultured and identified human osteoblasts.Then we made recovery and normal culture of human osteosarcoma cell line MG-63.We tested the proliferation of two kinds of cell lines under different concentrations of IP6 by MTT to determine the optimal concentration and then detected MG-63 cell cycle and apoptosis by flow cytometry.Results When IP6 concentration was more than 1 mmol/L,IP6 began to inhibit the proliferation of MG-63 cell line in the time-dose dependent manner.When the concentration reached 4 mmol/L,this inhibitory effect was the maximum.When IP6 concentration was 0.5 mmol/L or 1 mmol/L,the proliferation of osteoblasts was not obviously inhibited.When it was 2 mmol/L,the proliferation was slightly inhibited.A concentration of 4 mmol/L caused the apoptosis of osteoblasts.Conclusion IP6 can inhibit the proliferation of osteosarcoma cell line MG-63 and lead to its apoptosis.The optimal concentration is 2 mmol/L for achieving anti-cancer effects.

BACKGROUND: Nasal alar cartilage constitutes the main component of the lower 1/3 of the nose, that is, nose tip, nose wing, and nasal columella, its structure has a decisive role on the nose shape, especially the tip of the nose shape. The intensive study on nasal alar cartilage will help deepen our understandings of nasal alar cartilage morphology, structure and function, and help clinicians to correctly handle the lesions of nose and the lower part and to carry out medical beauty. OBJECTIVE: By observing external nasal anatomy, to clarify the histological role of nasal alar cartilage on nose shape, especially the nasal tip shape.DESIGN, TIME AND SETTING: Experimental observation of repeated measurement was conducted at the Laboratory of Anatomy, Second Military Medical University of Chinese PLA from September 1~(st) to 26~(th), 2006.MATERIALS: Well-preserved bodies of 15 fresh adult, containing 10 males and 5 females were used in this study.METHODS: To fully observe the fine structure of external nose, 30 sides of 15 external noses were dissected, and autopsy started from the medium dorsum of nose, layered anatomy, to observe various layers and the characteristics of the layers with blood vessels, focusing on observation of in vitro pre - and free post-nasal alar cartilage morphology, and measurement and recording were performed.MAIN OUTCOME MEASURES: Big foot medial alar cartilage, lateral feet and the angle of inside and outside legs were measured.RESULTS: Alar cartilage was open for a pair of backward "u"-shaped thin cartilage plate, and lateral nasal cartilage was located below and anteriomedialis the nose, was composed of medial and lateral crus and fornix, with thin body shape, unfixed structure. The shape of fornix was difficult to accurately describe; most presented wavy or folded. Lateral crus presented diamond-shaped or long strip, (16.21±2.71) mm in length, (8.45±1.72) mm in width, (1.09±0.18) mm in thickness. Cephalic rim intersected lower edge of lateral nasal cartilage, and slightly covered the lower edge of the lateral nasal cartilage, so that the two were overlapped, but also only the intersection without overlapping. Lateral crus constituted the base of nasal wings. Narrow medial crus formed nasal tip and the frame of front nasal columeila, showing posteroinferior curve or S shape, (13.06±2.16) mm in length, (3.79±0.58) mm in width, (1.02±0.18) mm in thickness. The left and right medial crus in the middle were connected by connective tissue, and in the same way connected to the anterior margin of the lateral nasal cartilage. Medial and lateral crus in the nasal tip showed an acute angle intersection, its angle (75.25±11.17)°. The medial and lateral crus intersected in the nasal tip and formed the fomix of the greater alar cartilage. The bilateral cornix constituted the frame of the nasal tip. CONCLUSION: Meager nasal alar cartilage is composed of the medial crus, lateral crus and fornix, which determined the nose shape, especially the nasal tip shape. External nose plastic surgery should pay attention to the protection of nasal alar cartilage.

A colistin producing strain Paenibacillus polymyxa AS1.541 was treated by N-methyl-N-nitro-N-nitrosoguanidine(NTG) for increasing yields of the antibiotic colistin.High-yield strains were obtained by selection of deregulated mutant which grow on media containing colistin,a self second metabolite,and ethionine,an analogue of methionine.Some of these mutants have higher yield of colistin than that of the parent strain.

Objective To produce the biological calcium citrate cement with fresh oyster shells, and investigate its compressive strength and biocompatibility so as to provide the experimental basis for clinical application of the material.Methods The compressive strength of biological calcium citrate cement was measured and its surface morphology was observed by SEM.The calcium release curve and pH value were measured in the simulated body fluid.Last, its biocompatibility was detected by cytotoxicity test.Results Biological calcium citrate cement produced by 0.33mL/g liquid solid ratio had the maximum compressive strength, and the crystal structure of the material was uniform and orderly.The determination of pH value showed that the degradation and absorption of biological calcium citrate cement did not significantly change the pH value of the body fluid.With gradual degradation of the material, the concentration of Ca2+ in the solution increased gradually.Cytotoxicity test showed that this material had good biocompatibility and no cytotoxicity.Conclusion Biological calcium citrate cement possesses strong compressive strength and good biocompatibility, and it can form a microenvironment with low in alkaline and high in calcium.

Objective To investigate the effect of adenosine A2A receptor on pituitary-adrenal axis response in acute phase of moderate craniocerebral trauma.Methods Eighteen adenosine A2A receptor knock-out mice in a C57BL/6 background and another eighteen their wild-type littermates were divided into normal control group and craniocerebral trauma for 4 hours group,and craniocerebral trauma for 24 hours group according to random number table,with siμ mice per group.Plasma levels of adrenocorticotropic-hormone (ACTH) and corticosterone at hours 4 and 24 postinjury were determined using ELISA method.Results At 4 and 24 hours,brain water content in wild-type mice [(80.950 ± 0.184) ％,(82.178 ± 0.255)％ respectively] was higher than that in gene knock-out mice [(80.006 ± 0.199)％,(81.091 ± 0.295)％ respectively,P ＜ 0.01].Besides,brain water content in both wild-type and gene knock-out mice increased after injury (P ＜ 0.01).Plasma levels of ACTH and corticosterone were higher in geneknock-out sham mice than in wild-type sham mice [(120.214 ± 2.472) ng/L vs (91.767 ±7.395) ng/L,(27.814 ±0.888) μg/L vs (11.430 ±0.644) μg/L respectively,P ＜0.0l].At 4 and 24 hours,plasma levels of ACTH [(174.776-± 5.040) ng/L,(189.613 ± 4.802) ng/L respectively] in geneknock-out mice showed a higher increase than those in wild-type mice [(119.594 ± 6.945) ng/L,(124.93-± 11.001 7) ng/L respectively,P ＜ 0.05].Moreover,plasma levels of corticosterone [(40.138 ±-0.805) μg/L] at 4 hours and [(37.440-0.485)μg/L] at 24 hours in gene knock-out mice showed a same result as compared with that in wild-type mice [(19.702 ± 0.804) μg/L,(17.602 ± 0.743) μg/L respectively,P ＜ 0.05].Conclusions Knock-out of adenosine A2A receptor increases the release of ACTH and corticosterone in acute stage of moderate craniocerebral trauma and promotes pituitary-adrenal stress response.This may provide a novel explanation for the neuroprotective effect of A2A receptor deficiency.

Objective To quantitatively estimate the range and area of environmental contamination by the feces of Schistoso?ma japonicum?infected that were freely grazed,so as to provide the theoretical evidence for the scientific assessment of the role of the freely grazed goat in the transmission of schistosomiasis japonica and development of control strategy. Methods All the fecal samples excreted by the infected goat at daytime(12 h)were collected by using a self?made goat fecal collector,weighed and counted. The quantity and dispersal of the feces excreted by the freely grazed goat at daytime under a natural condition were investigated,and the walking route and speed of the freely grazed goat at daytime were recorded with a multifunction GPS data logger. The maximum range and area of the environment contaminated by the feces of the freely grazed goat at daytime were esti?mated,and the maximum range and area of the Oncomelania hupensis snails that may be infected by the schistosome miracidium released from the eggs in the fecal samples of the freely graze goat at daytime were calculated. Results During the walking along the marshland at daytime(12 h),the quantity of the feces execrated by the freely grazed infected goat was(232.8 ± 39.8) g per goat,and the fecal samples were composed of(819.2 ± 152.1)pellets. The goat had a mean walking speed of(0.522 7 ± 0.099 7)km/h,and the longest distance,largest radius and largest range of walking activity were(6.272 4 ± 1.195 8)km, 3.136 2 km and(3 191.113 0 ± 1 189.709 4)hm2at daytime,respectively. The area of the snails that may be infected by the mi?racidium released from the eggs in the fecal samples of the freely graze goat(range of key regions for infected snails detection and control)at daytime was estimated to be(3 210.717 5 ± 1 190.907 3)hm2. Conclusions The intensity of environmental contamination by the eggs in the fecal samples of the freely grazed goat is linked to the number of infected goat. The contamina?tion range caused by the feces of the freely grazed goat with fixed fences is relatively stably kept within the walking range at day?time,and the range and area of goat fecal contamination is associated with the number of households that breed goat and the dis?tribution of goat fence. The area of the snails that may be infected by the miracidium released from the eggs in the fecal samples of the freely graze goat is larger than the area of setting contaminated by the eggs in the goat feces ,indicating that the range of in?fected snail examination and control is larger than the range of goat feces detected.

Objective To investigate the survival of Schistosoma japonicum eggs in goat feces in natural marshlands and the factors affecting its survival,so as to provide evidences for understanding of the role of eggs in goat feces in the transmission of schistosomiasis and the development of the interventions pertaining to disease control and elimination. Methods The goat ani?mals of schistosomiasis japonica were modeled in laboratory,and the feces of infected goat were collected. In laboratory,the ef?fects of environmental temperature and water content in goat feces on egg hatching were evaluated,and in the field,the effect of duration of goat feces on marshland on egg hatching and the effect of direct sunshine on egg survival were evaluated. Results At 25℃in laboratory,the hatching rate of eggs in goat feces was high?positively correlated with the water content in goat feces (r=0.87). If the water content reduced to 7.6%in goat feces,the eggs in goat feces lost the ability to hatch. Under the same wa?ter content in goat feces,the hatching rate of eggs gradually decreased with the extension of the duration of exposure of goat feces to-5℃,which reduced to 0 following 5 h exposure. At 5,15 and 25℃,the hatching rates of eggs gradually decreased with the extension of the duration of exposure of goat feces,and the miracidium hatching rates of eggs were 2.3%,5%and 0.9%respec?tively following the exposure for 52 d. At 35℃,the hatching rate of eggs gradually decreased with the extension of the duration of exposure,which reduced to 0 following 13 d exposure. In winter(-2?10℃),the hatching rate of eggs gradually decreased with the extension of the duration of exposure of goat feces on marshlands,which reduced to 0 after 21 d of exposure,and in spring(16?19℃),the hatching rate of eggs gradually decreased with the extension of the duration of exposure of goat feces on marshlands,which reduced to 0.9%after 5 d of exposure. At the same time point on the same marshland,the hatching rate of eggs in goat feces exposed to marshlands with direct sunshine was lower than that without direct sunshine. Conclusion The sur?vival of S. japonicum eggs in goat feces is associated with environmental temperature and water content(humidity)in goat feces, and the temperature and humidity are major natural factors affecting egg hatching.

Objective To develop a simple,feasible goat feces collector to improve the collection accuracy and integrity of goat fecal samples without pollution,and to modify the miracidium hatching test with a plastic tube to achieve simple,standard and comparative procedures,so as to provide technical support for pathogenic diagnosis and scientific research of goat schistoso?miasis japonica. Methods According to the body features of goat in marshland regions,a goat fecal collector,which was made of coarse fabric cottons,was devised,which was able to be fixed onto the goat buttocks and avoid urine pollution. Prior to mira?cidium hatching test,the goat fecal samples were pieced by using a mechanical method instead of the conventional artificial piec? ing method,and the effect of mechanical piecing treatment on miracidium hatching was evaluated. A filter membrane was added between the tube and rubbery ring to block the floater in fecal residues into the tube. The effects on miracidium hatching by us?ing thin fat?free cotton,thick fat?free cotton,nylon gauze at 100 pores/25.4 mm2 and 150 pores/25.4 mm2 were compared. Re?sults The goat feces collector was composed of foreleg fixing garment,hindleg fixing garment and stool bag. The functions of the fixing garment were as a fixed collector to allow non?shift and tolerance of weight during goat activity ,while the major func?tion of stool bag was in storage of stool. The goat activity was not influenced by the use of collector ,and all fecal samples were ex?creted to the bag. This collector was easy to perform and could avoid urine pollution,which was reusable after cleaning. Prior to miracidium hatching,the goat fecal samples,together with water,were pieced at 18 000 to 23 000 r/min for successive three times in a cooking machine,of 10 s each time at an interval of 5 s. Mechanical piecing had no clear?cut effect on miracidium hatching of eggs in fecal samples. A total of 541,620,344 and 211 miracidia were detected by using the miracidium hatching test with nylon gauze at 100 pores/25.4 mm2 and 150 pores/25.4 mm2,thin fat?free cotton and thick fat?free cotton respectively, indicating a better detection efficacy by using nylon gauze at 100 pores/25.4 mm2 and 150 pores/25.4 mm2. Conclusions The goat fecal collector is an easy?to?perform,accurate,unpolluted and reusable device to collect goat feces,which is suitable for pathogenic diagnosis of goat schistosomiasis. Mechanical piecing and use of nylon gauze at 150 pores/25.4 mm2 allow a simple, accurate and stable technique for parasitological diagnosis of schistosomiasis japonica,which provides a reliable tool for schisto?somiasis control and research.

Objective To explore the enrichment technique of Schistosoma japonicum cercariae on the water surface,so as to establish a new method combined with the existing technology to detect the cercarial infested water body quickly and sensitive-ly. Methods Soybean oil,gasoline,kerosene and isophorone were screened as expanding agents. The cercariae were enriched by the thrust of the expanding agents when diffusing on the water surface,and PE adsorption film and C-6 film were applied to seize them so as to determine the infectivity of the water quickly. The relationship between the dose of expanding agents and dif-fusion radius were explored. Results Gasoline,kerosene and isophorone were suitable expanding agents,and the diffusion ef-fect of isophorone was the best. After the enrichment by the expanding agents,the detection rate of cercariae of the method seiz-ing cercariae with the film significantly improved in the water. Conclusion This new method could effectively improve the de-tection rate of the cercarial infested water and is suitable for the low-degree infested water.