Diagnostic Errors ; Encephalocele ; diagnosis ; Female ; Humans ; Meningocele ; diagnosis ; Middle Aged ; Mucocele ; diagnosis ; Sphenoid Sinus ; pathology

Objective:To study the role of RapIDYeast Plus (RYP) system in identifying common clinical yeasts.Methods: The target strains were cultured and passaged twice on Sabouraud dextrose agar,and were fed to RYP system after 24-48 h incubation at 30℃.Results: One hundred and thirty-nine of the 150 target strains were identified to the level of species correctly,and 8 undetermined strains were confirmed by additional tests.It was found that 3 strains had been incorrectly identified by RYP system.The accuracy of RYP system was calculated as 92% without additional tests and 98% with additional tests.Conclusion: RYP system is suitable for routine tests in clinical microbiological laboratory;it can accurately identify more than 40 kinds of yeasts and yeast-like bacteria in clinical practice.

Objective To investigate the effects of heat-inactivated Cryptococcus neoformans(H-CN)on an experimental murine model of meningoencephalitis and on IL-1?,IFN-?and TNF-?gene ex-pression on the brain and spleen.Methods An experimental murine model of intracerebral infection with C.neoformans was established.Mice were divided into H-CN-treated group and control group.The brain and spleen of two groups were collected to obtain total RNA,and IL-1?,IFN-?and TNF-?were detected by RT-PCR method.After intracerebral challenging with lethal doses of C.neoformans,the survival time and colony forming units(cfu)of C.neoformans in the brain of two group were observed.Results The survival time was prolonged,and cfu of C.neoformans were decreased in the brain of H-CN-treated group in com-parison with those of control group.Expression of IL-1?was positive,and IFN-?and TNF-?negative in the brain tissue of H-CN-treated mice;while expression of IL-1?,IFN-?and TNF-?was all negative in the control mice,as indicated by RT-PCR.Expression of3cytokines,IL-1?,IFN-?and TNF-?was all positive in the spleen tissue of both groups,suggesting that there was no significant difference in the levels of cytokine gene transcripts in both groups.Conclusion These findings suggest that murine resistance to central nervous system infection of C.neoformans be enhanced by intracerebral administration of H-CN,and anti-cryptococcal mechanism probably involves a local cytokine IL-1?elicitated by H-CN in central nerve system.

OBJECTIVEThe study aimed to test if Paridis Rhizoma total saponins (PRTS) could induce apoptosis of human gastric cancer cell MKN-45.

METHODBased on the previous researches, PRTS was set by different concentrations to treat human gastric cancer cell for 12 h (5, 10, 20 mg x L(-1)). Fluorescent staining methods were adopted to observe apoptotic morphological changes of MKN-45. The apoptosis rates were analyzed by flow cytometry with Annexin V-FITC/PI staining. The enzymatic activities of caspase-3 and caspase-8 were measured by ELISA. The protein levels of Fas and FasL were detected by Western blotting.

RESULTUnder a fluorescence microscope, MKN-45 treated by PRTS was seen typical apoptotic morphological features. PRTS significantly increased the rate of apoptosis. Compared with the control group, there exsited significant differences in apoptosis rate of PRTS concentration of 20 mg x L(-1) (P < 0.01); besides, the enzymatic activities of caspase-3 and caspase-8 were promoted obviously after the effect of PRTS on MKN-45 cells for 12 h (P < 0.01). The protein levels of Fas and FasL in the MKN-45 were upgraded significantly.

CONCLUSIONPRTS can induce apoptosis of human gastric cancer cell MKN-45 , which is concerned with caspase-3 and caspase-8 and upgraded Fas and FasL.

Apoptosis ; drug effects ; Caspase 3 ; genetics ; metabolism ; Caspase 8 ; genetics ; metabolism ; Cell Line, Tumor ; Drugs, Chinese Herbal ; pharmacology ; Fas Ligand Protein ; metabolism ; Humans ; Magnoliopsida ; chemistry ; Rhizome ; chemistry ; Saponins ; pharmacology ; Signal Transduction ; drug effects ; Stomach Neoplasms ; drug therapy ; genetics ; metabolism ; physiopathology ; fas Receptor ; metabolism

Investigation of simvastatin and its related substances was carried out using a reversed phase ultra performance liquid chromatography/tandem mass spectrometry method. The identification of impurities in simvastatin was performed with a triple-quadrupole mass spectrometer, with an electrospray ionization (ESI) source in the negative/positive ion mode. A total of 12 compounds were characterized in commercial samples, among which 2 impurities had never been reported. All the impurities were deduced based on the MS fragment pathways of simvastatin and the biosynthetic pathway of lovastatin. This work provides very useful information for quality control of simvastatin.
Chromatography, High Pressure Liquid ; Chromatography, Reverse-Phase ; Drug Contamination ; Hypolipidemic Agents ; chemistry ; Quality Control ; Simvastatin ; chemistry ; Spectrometry, Mass, Electrospray Ionization ; Tablets ; Tandem Mass Spectrometry

Adolescent ; Cholesteatoma ; complications ; Ear, External ; abnormalities ; Ear, Middle ; abnormalities ; Humans ; Male ; Temporal Bone

To develop a LC-MS/MS method for the determination of five kinds of trace ginkgolic acids in diterpene ginkgolides meglumine injection materials, the column was Agilent ZORBAX Eclipse plus C18 (3.0 mm x 50 mm, 1.8 µm), and the mobile phase consisted of methanol-water (containing 0.2% formic acid) (95:5) at a flow rate of 0.5 mL · min(-1). The multiple reaction ion monitoring (MRM) with an ESI interface in the negative ion mode was selected. The results showed that the linear ranges of five kinds of ginkgolic acids were in the range of 0.2-36.0 µg · L(-1) (r ≥ 0.999 5). The lowest limit of quantification (LOQ) of ginkgo acid C13: 0, C15:1, C17:2, C15:0 and C17:1 were 0.18, 0.18, 0.21, 0.10 and 0.20 µg · L(-1), respectively. The average recovery was between 73.28% and 87.56%, and the average content of total ginkgolic acids in three batches of samples was in the range of 0.023-0.028 µg · g(-1), which was much lower than 2 µg · g(-1) prescribed in drug registration standards. This method is simple and rapid with high sensitivity, which can be used for the determination of five kinds of trace ginkgolic acids in diterpene ginkgolides meglumine injection materials.
Chromatography, Liquid ; methods ; Ginkgolides ; analysis ; Injections ; Limit of Detection ; Salicylates ; analysis ; Tandem Mass Spectrometry ; methods

Objective To evaluate the effect of sevoflurane postconditioning on microRNA-133a (miR-133a) expression during myocardial ischemia-reperfusion (I/R) in mice.Methods Thirty adult male C57 mice,weighing 20-30 g,were randomized to 3 groups (n =10 each) using a random number table:control group (group C),I/R group,and sevoflurane postconditioning group (group SP).In I/R and SP groups,hearts from adult male C57 mice were exposed and subjected to 30 min of ischemia and 180 min of reperfusion in anesthetized mice according to the method described by Das et al.In group C,only thoracotomy was performed without ligation of the coronary artery.In group SP,2.4％ sevoflurane was inhaled for 5 min starting from the onset of reperfusion to perform sevoflurane postconditioning.At 180 min of reperfusion,blood samples from the femoral vein were collected for determination of serum lactic dehydrogenase (LDH) and creatine kinase (CK) activities using the colorimetric method.The mice were then sacrificed,and myocardial specimens were obtained for determination of myocardial infarct size,miR133a and caspase-9 mRNA expression (by real-time reverse transcriptase polymerase chain reaction),and caspase-9 expression (by Western blot).Results Compared with group C,the serum LDH and CK activities and myocardial infarct size were significantly increased in I/R and SP groups,the expression of miR-133a was significantly down-regulated,and the expression of caspase-9 protein and mRNA was significantly up-regulated in group I/R,and the expression of miR-133a and caspase-9 protein and mRNA was significantly up-regulated in group SP (P＜0.05).Compared with group I/R,the serum LDH and.CK activities and myocardial infarct size were significantly decreased,the expression of miR-133a was significantly up-regulated,and the expression of caspase-9 protein and mRNA was significantly downregulated in group SP (P＜0.05).Conclusion The mechanism by which sevoflurane postconditioning inhibits cell apoptosis during myocardial I/R is related to up-regulation of miR-133a expression in mice.

Objective To understand the pathogen distribution situation among the children inpatients with hand ,foot and mouth diseases(HFMD) in Guiyang area during 2012 to provide the basis for the diagnosis ,treatment and prevention .Methods The data in 3 179 cases of HFMD were collected .The fluorescence quantitative RT‐PCR was adopted to perform the genotyping on universal enterovirus ,enterovirus 71(EV71)and Coxsackie virus A16(CA16) .Results A total 3 179 samples of HFMD were col‐lected ,among them ,151 cases (4 .75% ) were CA16 positive ,331 cases (10 .41% ) were EV71 positive ,7 cases (0 .22% ) were CA16 and EV71 co‐infection ,and 897 cases(28 .22% )were the other enterovirus .The whole year had 2 peaks of onset ,which were April to July and October to November .The onset age focused on the children aged under 5 years old (96 .16% ) ,among them ,0-3 years old had the highest onset ,moreover male children were more than female .Conclusion The etiology distribution of children HFMD in Guiyang area during 201 was dominated by the other genotypes of enterovirus and EV71 .

Objective To assess the diagnostic value of various preoperative imaging examinations for the point of the lateral femoral circumflex artery perforators through the deep fascia,in order to provide reasonable evidence for the design of location and protocol of anterolateral thigh perforator flap.Mehtods From September,2013 to December,2013,23 patients (including 1 patient with bilateral anterolateral thigh perforator flap) preparing anterolateral flap surgery were randomly divided into 4 groups(every group was 6 side).The patients in different groups were using different imaging techniques respectively,such as handheld doppler (HHD),Color doppler sonography (CDS),MDCT angiography (MDCTA),CDS and MDCTA united image location technology.The flap sizes varied from 8 cm × 5 cm to 28 cm × 12 cm.Moreover the coincidence rate between preoperative and intraoperative location of the perforator vessel was evaluated.Results Ali flaps were survived after the operation.The donor site were primarily closed while partial skin grafting was performed in 8 cases.The appearance and functional resuhs were satisfactory with following up for 3 to 9 months.The rates of coincidence between the preoperative and intraoperative location of perforating branches were HHD 61.53％,CDS 87.50％,MDCTA 85.71％,CDS and MDCTA united image location technology 93.33％ respectively.The HHD group showed significant decrease compared with the other groups (x2 =7.92,P ＜ 0.01; x2 =6.15,P ＜ 0.05; x2 =12.54,P ＜ 0.01,respectively).The CDS group had no statistically difference with the MDCTA group (P ＞ 0.05).The united CDS and MDCTA group showed significant increase compared with the other groups (x2 =4.22,P ＜ 0.05; x2 =3.94,P ＜ 0.05).Conclusion CDS and MDCTA united image location technology are more accurate for perforator preoperative location in auterolateral thigh flap,and should be widely used.