SUMMARY Lymphoma is a systemic disease. It is not uncommon to be found involved in digestive or central nervous system. However, lymphoma involved in these two systems at the same time is rare. The clinical feature of a case of lymphoma with gastrointestinal bleeding and limbs weakness was investigated and the literature was reviewed. The patient came to our hospital with melena and hematemesis. She was diagnosed as gastric ulcer by gastroscopy and biopsy showed lymphoma. Two days after she came to hospital, the patient presented with progressing limbs weakness. Magnetic resonance imaging (MRI) showed irregular abnormal signals in T2-T4 vertebra, which was enhanced obviously. A strip abnormal signal could be seen in spinal cord and involved in neighboring centrum and ribbing. The lesion extended to paravertebral tissue. The final diagnosis was lymphoma involved in stomach and spinal cord. Diseases presented with both upper digestive tract bleeding and symptoms of central nervous system were rare, including malignancies, virus infection and some therapy. Lymphoma was one of the causes. On the other hand, spinal cord ischemia might occur after gastrointestinal bleeding. Thus, doctors should examine the patients carefully to diagnose these diseases.

Objective: To compare the immunomodulatory capability to allergic asthma between orally taken Lactococcus lactis and Lactobacillus Lactobacillus plantarum in dust mite-sensitized mice. Methods: C57BL/6 mice were divided into four groups;Group N,M,L and P.Mice in M,Land P groups were sensitized with 2 % mite extract on day 0,7and 14 and challenged with 4% mite extract on day 21,22,23 and 24.Meanwhile we fed Lactococcus lactis and Lactobacillus plantarum to mice in L and P group respectively from each day of sensitization on as well as from the first day of challenge on,continuing for five days.Mice in N and M group were treated with saline as control.Histopathologic examination in the lung tissues of the mice was performed at day 3 after the last challenge.Cell count and classification,and Th1/Th2 cytokine levels in BALF were measured simultaneously.Isolated splenocytes from the mice were subjected to the detection of cell proliferation by BrdU incorporation in response to the mite extract.Using ELISA,the levels of Th1/Th2 cytokines in the supernatant of mite-stimulated splenocytes were measured. Results: Pulmonary allergic inflammation with eosinophilic infiltration as well as increased levels of IL-4 and IL-5 in BALF were observed in mice sensitized/challenged with mite extract(Group M).Pulmonary inflammation was decreased significantly in group L concomitant with down regulated levels of IL-4 and IL-5,total cell count and the percentage of eosinophils in BALF(P

Objective:To investigate the effect of lactic acid bacteria on P38 signaling in immune response to dust time in mite-sensitized mice.Methods:40 C57BL/6 mice in Group M,P and C,except for N(saline control),were sensitized and challenged with mite extract.Mice in C and P were simultaneously fed to Lactococcus lactis and Lactobacillus respectively.Total cell count and classification in BALF were done and IL-4 level detected by ELISA.Western blot were performed for detection of P38 signaling from mice's spleen cells stimulated with mite extract.Results:IL-4 level,total cell count and the percentage of eosinophils in BALF were significantly lower in Group C(P

Objective:To measure CT linearity and evaluate if it would show linear relationship between coefficient and attenuation.Methods:The Catphan phantom was used to measure CT linearity in 18 computed tomography equipments,and the results were calculated.Results:(1)The CT linearity were qualified in 14 equipment but 4.Conclusion:(1)There are many factors which affect CT linearity.The artifact will be produced if the CT linearity is unqualified.(2)CT linearity must be calibrated periodically to assure the stability of the CT linearity and to make for the accurate diagnoses.

As a node between the skull and the spine, atlantoaxial joint plays a pivotal role in the maintenance of head and neck activities, as well as the connection between the brains and the spine. The biomechanical characteristics of stlantoaxial joint, together with traumatic factors, contribute to determine the site, type and character of atlantoaxial joint fracture and dislocation, they also affect the treatment of atlantoaxial joint injury. With the materials technique development and accumulated experience of clinical operations, various types of new implants are increasing and used for clinical practice, accordingly the surgical approach and therapy regimen of atlantoaxial disease have been greatly enriched. At present, the use of implant mainly aims to promote the atlantoaxial fusion or enhance the connection and fixation between atlantoaxial joints. However, the head and neck activities are also limited simultaneously while the implant enhances the atlantoaxial joint stability. Further studies require to handle the correlation between joint stability and joint flexibility and to maximize the physiological function recovery of atlantoaxial joints when ensuring the atlantoaxial joint stability.

As a protein originally found in plant pathogenic bacteria, transcription activator-like effectors (TALEs) can be fused with the cleaving domain of restriction endonuclease (For example Fok I) to form artificial nucleases named TALENs. These proteins are dependent on variable numbers of tandem Repeats of TALEs to recognize and bind DNA sequences. Each of these repeats consists of a set of approximately 34 amino acids, composed of about 32 conserved amino acids and 2 highly variable amino acids called repeat variant di-residues (RVDs). RVDs distinguish one TALE from another and can make TALEs have a simple cipher for the one-to-one recognition for proteins and DNA bases. Based on this, in theory, artificially constructed TALENs could recognize and break DNA sites specifically and arbitrarily to perform gene knockout, insertion or modification. We reviewed the development of this technology in multi-level and multi species, and its advantages and disadvantages compared with ZFNs and CRISPR/Cas technology. We also address its special advantages in industrial microbe breeding, vector construction, targeting precision, high efficiency of editing and biological safety.
Amino Acid Motifs ; Biotechnology ; DNA ; chemistry ; Endonucleases ; chemistry ; Tandem Repeat Sequences ; Trans-Activators ; chemistry

Triple-negative breast cancer (TNBC) is a subgroup of breast cancers defined by a lack of the expressions of estrogen,progesterone and HER2 receptors,with more aggressive biological and clinicopathological characteristics and a close relationship with basal-like and breast cancer susceptibility gene-1 (BRCA1)-related breast cancers.TNBC is insensitive to most available hormonal or standard therapeutic agents,associated with increased risk for distant metastases and with poorer prognosis than other types of breast cancer.A deeper insight into the biology of TNBC may lead to improved therapies and better clinical outcomes of the disease.

Epidemiology is a discipline both old and young.It's not until the 1970 s-1980 s,theoretical framework of epidemiology,as well as its study design and analysis methods were systematically summarized and improved.Since 1990s,modern epidemiology has made considerable progress,which is constantly updating our health concept and health model.Meantime,it's been continuously converging with other relevant discipline,gradually forming new branches and expanding its application.This paper summarizes the trends of epidemiology in recent decades,and explores the future direction of development.

Objective:To measure CT linearity and evaluate if it would show linear relationship between coefficient and attenuation.Methods:The Catphan phantom was used to measure CT linearity in 18 computed tomography equipments,and the results were calculated.Results:(1)The CT linearity were qualified in 14 equipment but 4.Conclusion:(1)There are many factors which affect CT linearity.The artifact will be produced if the CT linearity is unqualified.(2)CT linearity must be calibrated periodically to assure the stability of the CT linearity and to make for the accurate diagnoses.

Objective: To investigate the therapeutic efficacy and mechanisms of ?-sodium aeacine in treating chest trauma.Methods: One hundred and sixty patients with chest trauma were randomly divided into two groups: the control group and the study group.The control group was treated by conventional method,while in addition to the conventional treatment,the study group was also treated with ?-sodium aeacine,10 mg of ?-sodium aeacine in 250 ml 10% glucose solution for intravenous drip,30 to 40 drops/min,twice a day for 10 days(one therapeutic course).Results: The effective and total effective rates of the study group were significantly higher than those of the control group(the effective rate(62.5% vs.22.5%) and the total effective rate(97.5% vs.66.3%),both P