Alternaria zinniae was a plant fungal pathogen isolated from a world-wide weed Xanthium occidentale,which could cause some weeds of Asteraceae disease. It was found that the fungus made disease spot on the leaf through producing secondary metabolite—phytotoxin. The toxin-producing capability of the fungus was studied. The optimal cultural conditions for producing phytotoxin were temperature 25℃,pH 6.5,cultured period 9~11d,rotating speed 110r/min,darkness and enough dissolved O_2,crude toxin was obtained through large scale fermentation. Analysis on the influence of time,temperature,lightness for storing on the stability of phytotoxin of Alternaria zinniae showed that the phytotoxin had the potential to develop as a herbicide originating from microorganism.

Cerebral ischemia activates endogenous angiogenic factors,and increase microvessel density and form new capillaries in ischemic brain tissues.Exogenous angiogenic factors can more effectively promote angiogenesis and the establishment of collateral circulation in ischemic regions and peripherial tissues,improving local blood supply and reducing infarct size.The further study of the mechanisms and methods in promoting regional angiogenesis after cerebral ischemia will contribute to improve neurologic deficit.

Sheng's acupuncture manipulation at bone-nearby acupoints is a set of needling manipulation of the chief physician of TCM, SHENG Xie-sun, summarized through his over 50 years clinical experiences and on the basis of Internal Classic. Regarding this manipulation, on the premise of acupoint selection based on syndrome differentiation, the acupoints close to bone are possibly selected and punctured, with the needle tip toward bone edge, and followed by the technique to achieve reducing purpose. Clinically, the significant immediate analgesia can be achieved in pain disorders such as headache and toothache. Professor Sheng thought, corresponding to the location of needle insertion and needling depth, the tissue layers of needle tip passing through should be considered specially. The site of needle insertion should be changeable so as to ensure the needle tip reaching the bone. This manipulation for analgesia provides a certain guide for acupuncture study, especially for the mechanism study on acupuncture analgesia.
Acupuncture ; education ; history ; Acupuncture Points ; Acupuncture Therapy ; history ; methods ; Bone and Bones ; physiopathology ; China ; History, 20th Century ; Humans ; Meridians ; Pain Management ; history ; methods

Objective:To study the mechanisms of neutrophil elastase (NE) induced expression of respiratory mucin MUC5AC. Methods:Using gene recombination techniques,four luciferase reporter gene plasmids containing different length of human MUC5AC gene promoter were constructed.Site-directed mutagenesis technique was used to establish mutants of Sp-l and NF-?B site in MUC5AC gene promoter; the relative luciferase activities were detected in the transfected human pulmonary A549 cells. Results:Series of luciferase reporter gene containing different sequences of human MUC5AC promotor were constructed successfully.NE could increase the expression of luciferase reporter gene plasmid containing -1300bp,-689bp and-324bp version of MUC5AC promoter in the transfected A549 cells (P

Objective To investigate the effects of arsenic trioxide(As2O3)combined with ascorbic acid(AA) on the apoptosis and differentiation of myelocytic leukaemia cells.Methods The acute promyelecytic leukaemia cell lines (NB4 and MR2)and erythroleukemia cell line(KS62)were cultured in vitro.Grouping wasbased on different concentration of As2O3(0,0.1,0.2,0.5,1.0 μmol/L),which WaS used a8 control groups.Then,AA(113.0μmol/)was added into each group.Cell morphologic changes of cell lines NB4,MR2 and K562 were observed under light microscope;The apoptosis symbols [Annexin V(+)/PI(-),Annexin V(+)/PI(+)]and differentiation symbols(CD11b and CD33)were detected by flow cytometry 96 hours later.Results

Objective The purpose of this study was to investigate the clinical features and the magnetic resonance imaging of brain of children with Japanese encephalitis (JE) and whether this relationship can be used in early diagnosis.MethodsMRI was performed in 145 children with JE.T1-weighted,T2-weighted and FLAIR of brain were obtained in 98 patients with 0.35 T MRI system and conventional MRI and DWI were performed in 47 patients with 1.5 T MRI system.The position,range and MRI features were analyzed.ResultsMR imaging studies of 106 patients showed hyperintensity in the thalamic with 87 patients involved the caudex cerebri,as seen on T2-weighted images.The lesions were also seen in basal ganglia (32 cases),cerebral cortex (43 cases),cerebellum (2 cases),and white matter (15 cases).Lesions showed high intensity signal on T2WI and T2-FLAIR,and iso- or low intensity on T1WI.The number of the lesions in FLAIR were more than T2WI.The positive rate on 1.5 T MRI (87.2%) was higher than that on 0.35 T MRI(66.3%,χ2＝7.06,P＜0.01).ConclusionsMultiple brain tissues can be involved and the thalamic and the caudex cerebri involvement are the conspicuous characteristics in children with JE.T2-FLAIR and DWI are helpful in the early diagnosis of JE.

Objective To investigate the association between prodromal headache and the propensity of rebleeding after aneurysmal subarachnoid hemorrhage.Method Prodromal headache was defined as a sudden attack of severe headache lasting at least one hour with or without accompanying symptoms,not leading to a diagnosis of SAH 4 weeks before the confirmation of subarachnoid hemorrhage.Two hundred and nine patients with aneurymal subarachnoid hemorrhage were enrolled in this research.Age,gender,Hunt-Hess grade,D-dimer, (FBG),site and number of aneurysms and prodromal headache were recorded.Patients were divided into rebleeding group and non-rebleeding group.Comparing the above survey components between two groups was carried out by using case control study method.Age,aneurysm number,D-dimer and fibrinogen of the two groups were analyzed by t test.Prodromal headache,gender,site of aneurysms were analyzed by chi square test.Hunt- Hess grade was analyzed by rank test.Results Twenty-two(10.5%)patients had rebleeding.In the rebleeding group,10 patients(45.5%)had prodromal headache,while in the non-rebleeding group(n=187),21 patients (11.2%)had prodromal headache.Patients with prodromal headache had greater propensity of rebleeding compared with those without prodromal headache(P

Balloon Occlusion ; adverse effects ; Cerebrovascular Circulation ; Contraindications ; Humans ; Postoperative Complications ; prevention & control

Aneurysm, Dissecting ; etiology ; Aortic Aneurysm ; complications ; Aortic Rupture ; Humans ; Male ; Middle Aged ; Sinus of Valsalva ; Ventricular Septum

The full name of the polycystic liver disease is autosomald ominant polycystic liver disease.Surgical treatment is the main method to deal with it at present.With the deep study of the polycystic liver disease into the molecular genetic level,it is possible for molecular diagnostics to achieve presymptomatic and prenatal diagnosis.The article mainly introduce the research progress of the polycystic liver disease's etiology,pathogenesis,diagnosis,treatment,and so on.