Endocarditis ; Heart Valve Prosthesis ; Humans ; Pichia

Objective:To establish an HPLC method for the simultaneous determination of viceninⅡ, isoschaftoside and schafto-side in Isodon lophanthoides, and analyze their content dynamic changes. Methods:The HPLC system consisted of a Phenomenex luna C18(250 mm ×4.6 mm, 5 μm)column and a solution system of methanol and 0.5% formic acid with gradient elution, the flow rate was 0. 8 ml·min-1 and the detection wavelength was 334 nm at the column temperature of 25℃and the injection volume was 10 μl. Results:The linear range of viceninⅡ, isoschaftoside and schaftoside was 0.130-3.110 μg(r =0.999 8), 0.180-4.540 μg(r =0.999 9) and 0.080-1.970 μg(r =0. 9999), respectively. The average recovery was 96.8% (RSD =1.9%), 99.2% (RSD =1. 6%) and 97. 1% (RSD=1. 6%) (n=6), respectively. The above three kinds of water-soluble flavonoids from seedling stage to significant accumulation, isoschaftoside and schaftoside reached the highest value in March and August, the content of VitexinⅡ in January and April tends to be stable, in May began to increase gradually, reached the maximum value in August, then began to de-crease. Conclusion:With the contents of water-soluble flavonoids as the indicators, the best harvest time of Isodon lophanthoides is March and August, and the quality of the medicinal materials harvested in August is the best.

Objective To study the clinicopathological characteristics and ultrastructural features of secretory meningioma.Methods A total of 19 cases of secretory meningioma were studied by clinicopathology,immunohistochemical and ultrastructural observation.Results Eosinophilic hyaline inclusions with different sizes were found in cytoplasm of tumor cell,which were positive to PAS and alcian blue stains.These inclusions were secreted by microvesicles in cytoplasm of tumor cell under electron microscopy.Conclusion Immunohistochemistry and ultrastructural observation play important roles in the diagnosis and differential diagnosis of this tumor.

Objective To discuss the comparability of TSH results among different detection systems.Methods 4 different kinds of chemiluminescence immune detection systems (Bayer ACS180, Bayer CENTAUR, VITROS ECI and DPC immulite-1000) were used to detect TSH concentration in 3 kinds of quality control specimens (Bayer,DPC and self-made) and clinical sera. The collected data were dealt with statistical analysis.Results Analysis of variance showed the TSH results from different control and patients sera had significant difference in different detection systems (P

Objective To evaluate the effect of ulinastatin on the expression of aquaporin-4 (AQP4) during focal cerebral ischemia-reperfusion (I/R) in rats.Methods One hundred and thirty-five male adult SpragueDawley rats,weighing 230-280 g,were randomly divided into 3 groups (n =45 each):sham operation group (S group),I/R group and ulinastatin group (group U).The rats were anesthetized with intraperitoneal 10％ chloral hydrate 3.5 ml/kg.Focal cerebral ischemia was induced by 2 h middle cerebral artery occlusion followed by 24 repeffusion.In U group,ulinastatin 100000 U/kg was injected immediately after beginning of reperfusion,while the equal volume of normal saline was injected in S and I/R groups.The rats were sacrificed at 6,24 and 48 h of repeffusion and brains were removed for determination of infract volume (by TTC),brain water content and expression of AQP4 (by immunohistochemistry) in brain tissues.Results Compared with S group,the infarct volume and brain water content were significantly increased,and the expression of AQP4 was up-regulated at each time point in I/R and U groups (P ＜ 0.05).Compared with I/R group,the infarct volume and brain water content were significantly decreased,and the expression of AQP4 was down-regulated at each time point in U group (P ＜0.05).Conclusion The mechanism by which ulinastatin mitigates focal cerebral I/R injury is related to down-regulation of AQP4 expression in brain tissues.

Objective To explore the value of dynamic contrast-enhanced MRI (DCE-MRI)and diffusion tensor imaging(DTI)in grading of glioma.Methods 3.0T DCE-MRI and DTI scans were performed in 31 patients with glioma confirmed by pathology.Capacity volume transfer constant (Ktrans ),extravascular extracellular volume fraction (Ve ),exchange rate constant (Kep ),initial area under the gadolinium concentration-time curve (iAUC),and relative fractional anisotropy (rFA)were measured in the low grade glioma (LGG)and the high grade glioma (HGG).The correlation between parameters of DCE-MRI and rFA with microvessel denisity (MVD)and microvessel structure (MVS)were performed by Spearman rank correlation analysis.Results The MVD and MVS were positive correlation with the grading of glioma.Ktrans ,Kep ,Ve ,iAUC and rFA values of the LGG were (0.02±0.01)min-1 ,1.82 (0.18-8.54)min-1 ,0.05±0.03, 2.47±1.66 and 0.55±0.22,respectively.Ktrans ,Kep ,Ve ,iAUC and rFA values of the HGG were (0.1 1±0.02)min-1 ,1.31 (0.12-7.58)min-1 ,0.28±0.10,10.84 ±6.46 and 0.28 ±0.08,respectively.The differences of all parameters between the LGG and the HGG were statistically significant,except for Kep (P <0.05 ).Ktrans ,Ve and iAUC values were positive correlation with MVD and MVS (P <0.05),and rFA values were negative correlation with MVD and MVS (P <0.01).Conclusion The quantitative parameters of DCE-MRI and DTI have important values in grading of glioma and evaluating tumor angiogenesis and microvessel structure.

Objective To explore the clinical efficacy on hyperbaric oxygenation combined with 0.025% ipratropium bromide inhalation in treatment of patients with stable chronic obstructive pulmonary disease( COPD) .Methods 86 elderly patients with stable COPD were divided into control group (n=42)and observation group(n=44)according to therapeutic methods.The patients in both groups were firstly given the conventional treatment such as oxygen inhalation, anti-infection, eliminating phlegm and reliving asthma, nutritional support, spasmolysis as well as a balance of water, electrolyte and PH.And the patients of the observation group were given hyperbaric oxygenation combined with 0.025% ipratropium bromide inhalation on basis of the conventional treatment.The clinical effects of the two groups were compared.Results In the control group, there were no statistical differences in parameters of pulmonary function before and after the treatment.However, after treatment, the relative index level of pulmonary function in the observation group was significantly higher than that of pre-treatment and that of the control group after treatment(P<0.05).After treatment, PaO2, SaO2 and pH of the two groups were significantly higher than those of pre-treatment(P<0.05).The level of PaCO2 in the two groups was significantly lower than that of pre-treatment(P<0.05).Also, the difference in PaO2, PaCO2 and SaO2 level was statistically significant before and after treatment between thw two groups(P<0.05).The scores of each dimension in PSQI scale of both groups were significantly lower than those of pre-treatment(P<0.05).And the scores of each dimension in PSQI scale of observation group was significantly lower than those of the control group after treatment(P<0.05).Whole blood cholinesterase activity of both groups was obviously greater than before treatment between theo two groups(P<0.05).Serum creatinine level of both groups were obviously lower than those of pre-treatment(P<0.05),and the differences in two groups in both blood cholinesterase activity and serum creatinine level were statistically significant ( P<0.05 ) .Conclusion The combination of high pressure oxygen and 0.025%ipratropium bromide for patients with stable COPD has a very significant clinical efficacy.It can effectively improve cholinesterase activity and lower serum creatinine level.

AIM: To investigate Jianwei Yuyang Granule(Radix Bupleuri,Radix codonopsis,Radix paeoniae alba,Rhizoma corydalis,etc.) the effects of on curative effect and quality of life of Helicobacter pylori(Hp)-positive peptic ulcer(PU) patients. METHODS: 46 Hp-positive PU patients whose differentiation of symptoms and signs of the traditional Chinese medicine was the stagnation of liver-QI with deficiency of the spleen type were divided randomly into Jianwei Yuyang Granule group and western medicine control group(Metronidazole,amoxycillin and ondansetron).Eradicative rate of Hp、curative effect under gastroscope、clinical curative effect in Chinese medicine syndrome were observed and quality of life were evaluated by McMaster questionnaire. RESULTS: Compared with western medicine control group,Hp eradicative rates was lower(P0.05),Jianwei Yuyang Granule gained an advantage against western medicine with regard to effect on traditional Chinese medicine syndrome and quality of life(P

BACKGROUND:Bone morphogenetic proteins are associated with the formation and development of scars. Fibroblasts are closely related to the proliferation and maturation of scars. However, the expression of bone morphogenetic proteins in fibroblasts in different stage of hypertrophic scars remains poorly understood.
OBJECTIVE:To observe the expression of bone morphogenetic protein 2/4, bone morphogenetic protein 7, bone morphogenetic protein receptor IA in fibroblasts in different stage of hypertrophic scars.
METHODS:The immunohistochemical SP method was employed to detect the expression of bone morphogenetic protein 2/4, bone morphogenetic protein 7, bone morphogenetic protein receptor IA in fibroblasts in 20 cases of proliferative stage hypertrophic scar and 20 cases of maturation stage hypertrophic scar. Al samples were obtained from the Department of Plastic and Aesthetic Surgery, the People’s Hospital of Guangxi Zhuang Autonomous Region, China.
RESULTS AND CONCLUSION:The expression of bone morphogenetic protein 2/4 in fibroblasts in proliferative hypertrophic scars significantly elevated compared with mature hypertrophic scars (P<0.05). In various stages of hypertrophic scars, the expression of bone morphogenetic protein 7 and bone morphogenetic protein receptor IA in fibroblasts was not obviously different (P>0.05). Results demonstrated that bone morphogenetic protein 2/4 expression down-regulated during the development from proliferative stage to maturation stages in fibroblasts in hypertrophic scars. However, there was no change in the expression of bone morphogenetic protein 7 and bone morphogenetic protein receptor IA.

ObjectiveTo assess the relationship between the estimated glomerular filtration rate (eGFR) and the severity of coronary artery stenosis in elder people. MethodsSix hundred and fifty-seven patients who underwent selective coronary artery angiography were divided into 3 groups according to age: group Ⅰ (202 patients aged <60 years), group Ⅱ (181 patients aged from 60 to 69 years) and group Ⅲ (274 patients aged ≥70 years). According to the simplified MDRD equation,impaired renal function and severe renal dysfunction, respectively. Clinical features and the severity of coronary artery stenosis were compared among the 3 groups. ResultsThe level of average eGFR tended to he decreased with the narrowed coronary arteries. The difference of average eGFR between patients with muhivessel versus two-vessel coronary artery disease was of statistical significance in Group Ⅲ(P = 0. 035). After controlling for the effects of smoking, hypertension, dyslipidemia,aging, and diabetes, the Gensini score which reflected the severity of coronary artery stenosis was negatively correlated with the level of eGFR (r =-0. 110, P = 0. 005). ConclusionsIt suggests that the eGFR decrease is associated with the severity of coronary artery stenosis, and there is a linear correlation between eGFR and Gensini score in elder people, eGFR can be used to evaluate the severity of coronary artery disease and prognosis.