Objective To investigate and evaluate the changes of phospho PYK2 and phospho p38MAPK expression in neurons after focal cerebral ischemia. Methods Focal ischemia reperfusion model was established in rats, and by using immunostaining, the changes of phospho PYK2 and phospho p38MAPK expression in neurons was observed. Results Faint phospho PYK2 and phospho p38MAPK immunoreactivity were revealed in normal cortical neurons. Fifteen minutes after the ischemia onset, a pronounced upregulation of phospho PYK2 and phospho p38MAPK immunoreactivities were evident in these ischemia attacked neurons. The immunoreactivities of phospho PYK2 and phospho p38MAPK reached its peak at 30min after ischemia, and decreased 60min after ischemia. Conclusion Cerebral ischemia was able to induce neuronal PYK2 phosphorylation. The activation of PYK2 might link ischemia attack to the p38MAPK signaling pathway to initiate the neuronal response to the stress stimuli

Objective:To explore the immunity provided to BALB/c mice by immunization with the recombinant ricin B chain protein (rRTB). Methods:Female BALB/c mice were randomly selected into rRTB-vaccinated group and PBS group. Mice were subcu-taneously (s. c. ) injected four times with 14 days immunization time interval. Changes of antibodies (IgG,IgG1and IgG2a) in serum were detected by ELISA. Meanwhile,the expression of IL-4 and IFN-γ were detected by flow cytometry. Results:The mean IgG titers reached 106 after the fourth immunization and a strong secondary response was induced in vaccinated mice when challenged with toxin. There was significant difference between rRTB-vaccinated group and PBS group ( P<0. 05 ) . The same result was shown in IgG1. However,no changed was detected in IgG2a. Meanwhile,there was significant difference for IL-4 between two groups (P<0. 05), while no significant difference for IFN-γwas observed. Conclusion:rRTB can produce higher levels of antigen-specific antibodies ( IgG and IgG1),and cytokine (IL-4) of splenocytes,which means the recombinant protein can induce the Th2-type immune response and trigger a good immune response. rRTB may be a potentially valuable vaccine candidate against human exposure to AT.

Objective To investigate and evaluate the changes of PYK2 expression in hippocampal neurons and microglial cells in Kainate acid-induced status epilepticus. Methods Kainate acid-induced status epilepticus was established in rats, and by using immunostaining, changes of PYK2 expression in hippocampal neurons and microglial cells was investigated. Results Expression of PYK2 in hippocampal pyramidal neurons was markedly decreased after kainate acid-induced status epilepticus. However, 24h after the epileptic onset, a pronounced up-regulation of PYK2 and phosphor-PYK2 immunoreactivities were evident in amoeboid microglial cells. The upregulation of PYK2 and phosphor-PYK2 was in accordance with the morphological changes of the activated microglial cells. Conclusion PYK2 was activated in microglial cells after seizure. Furthermore, the activation of PYK2 in microglial cells after seizure might be related to the morphological and behavioral changes of microglial cells after activation.

We made the third party medical disputes mediation organization dispose medical disputes more quickly and effectively by analyzing its theoretical knowledge,running mode,economic framework,administrative agency and personnel disposition,which provided institutional insurance for the establishment of harmonious relationship between doctors and patients in our country.

A new method was developed for the separation and determination of inosine monophosphate (IMP) by ion chromatography (IC) with suppressed conductivity detection. Separation was achieved on an anion-exchange column Ionpac AS11-HC of high capacity within a short time. 30 mmol/L KOH produced by an EGC-KOH eluent generator was used for isocratic elution. No interferences existed between the seven common inorganic anions and IMP. Under the optimum conditions, the linear range of the calibration curve for IMP was 1. 0-200 mg/L, with correlation coefficient ( R2 ) of 0. 999. The relative standard deviations (RSDs) for retention time, peak height and peak area of IMP were 0. 16%, 0. 94% and 0. 86%, respectively, indicating good reproducibility of the method. The method was successfully applied to the determination of IMP in meat products, with spiked recovery ranging from 86. 0% to 110. 0%. This simple, accurate and reliable method could be served as a rapid and effective analytical tool for meat flavoring research.

Teaching method of grouping and numbering the experimental animals refers to management of laboratory animals by marking them with numbers. In an experimental group, the same marked experimental animal is performed surgery operation by each group member. As a whole, each group member gets the same score according to the evaluation of operation performance of that group and the score is recorded as usual performance score. This method is simple and easy to implement. It is the optimizing of traditional basic operative surgery teaching methods which is conducted not only to improve medical students' sense of responsibility and animal protection awareness, to make full use of teaching resources and reduce waste, to cultivate medical students' team cooperation awareness, but also to deepen medical students' knowledge about surgical complications and improve the quality of teaching.

Objective To explore the clinicopathologic features,diagnostic criteria and clinical prognostic factors of Goblet cell carcinoid (GCC) of the appendix.Methods The clinical and pathological data from 6 GCC patients were analyzed including age,clinical stage,surgical procedure,outcome,macroscopic features,histological sections and immunohistochemistry.Results The median age was 49.67 years old.Clinically,4 patients presented the signs and symptoms of acute appendicitis,while 2 patients presented the signs and symptoms of abdominal pain.4 patients of them undergone the simple appendectomy,the other 2 undergone the right hemicolectomy.All patients who had undergone the operation treatment survived.One patient was lost to the follow-up.Macroscopically,no masses were found in the appendix.Microscopically,4 cases showed that the tumor cells were identical to the goblet cell normal small intestinal crypts morphologically.The atypia,necrosis and mitotic figures of neoplasm cells were absent.2 cases were composed of small,discrete acini,tubules lined by a single layer of cuboidal or columnar cell,the signet-ring cells were uniform with pattern of infiltration being nests,rosrttes,or clumps without a dintinct lumen.All GCC cases were positive to Syn,4 cases were positive to CgA,some cases expressed NSE,CD56,CK7,CK20,Ki-67 index of 5 cases was under 2 ％,the other 1 was 3 ％.None had lymph node metastases,intestinal metastases or ovary metastases.Conclusions GCC of appendix is a rare neoplasm,and has more aggressive behaviour than classic carcinoids.Positive expression of Syn and CgA is necessory for the diagnosis of GCC,Ki-67 index may suggest the grading of tumor.

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Objective Aimed to clarify the molecular mechanism after subarachnoid hemorrhage （SAH） by investigating the expression of tight junction protein Claudin-5 and ZO-1 and the effects of SP600125 on them. Methods Seventy-five male Sprague Dawley rats （300 to 350 g） were randomly divided into sham,SAH,SAH ＋ DMSO （dimethyl sufoxide） solution,SAH ＋SP600125 （C-Jun N-terminal kinase inhibitor）10 mg/kg,and SAH ＋SP600125 30 mg/kg groups. The standard endovaseular perforation was performed to produce experimental SAH. The JNK inhibitor SP600125 was intraperitoneally administered at 1 hour before and 6 hours after SAH. Results At 24 hours after SAH,signs of microvessels injury were observed in brain cortex. Compared with the sham group,expression of Claudin-5 and ZO-1 was sig- nificantly decreased （P 〈 0.05 ）. JNK inhibitior SP600125 suppressed the decrease of Claudin-5 and ZO-1 expression, attenuated blood-brain barrier disruption in rats after SAH. Conclusions The blood-brain barrier disruption is an important mechanism of early brain injury after SAH. JNK inhibitor SP600125 improves neurological outcomes and provides neuropmtecfion against acute events after SAH such as bloodbrain barrier disruption and cell apoptosis.

Objective To explore the value of systematic continuous sequence approach combined with two- and three-dimensional ultrasonography in screening of fetal hand deformity. Methods Systematic continuous sequence approach was performed with two- and three-dimensional u1trasonography in 28 541 cases to detect the fetal hand from January 2011 to December 2014 in the 105th Hospital of PLA. Prenatal ultrasonic diagnosis was compared with clinical delivery follow-up and pathology results of induced labour, then prenatal ultrasound features of various fetal hand deformities and the causes of missed diagnosis were analyzed. Results Thirty-four cases of fetal hand deformity were diagnosed out of 28 541 fetuses by prenatal ultrasonography (43 hands). In the 34 cases, there were 5 cases of cleft hand, 13 cases of ectrodactyly with fingers abnormal morphology, 3 cases of forearm and hand dysplasia, 7 cases of wrist or finger abnormal posture and 6 cases of hand absence of abnormal. Three missed cases included 1 case of polydacty, 1 case of middle phalanx and distal phalanx of the little thumb absence and 1 case of middle phalanx of little thumb absence. Hand deformity rate was 0.13%(37/28 541). The detection rate ofprenatal ultrasonography was 91.89%(34/37). The rate of hand deformity complicated deformity with one or more other organ was 52.94%(18/34). The rate of chromosome abnormalities was 13.51%(5/37). Cleft hand showed that fetal hand from the central longitudinal split into two halves. Ectrodactyly with fingers abnormal morphology showed that one or multiple fingers were absent combined with residual finger abnormal morphology. Forearm and hand dysplasia showed that the forearm was abnormally developed, the ulna and radius were short and the structure of the wrist disappeared. Wrist or finger abnormal posture showed that a hook-shaped wrist or half fist shaped hand, thumb adduction flexion, the index finger bending baroclinic on the dorsal of the middle finger and small finger bending baroclinic on the dorsal of the ring finger dorsal. Hand absence showed that no fetal hands. Conclusions Application of systematic continuous sequence approach combined with real time three-dimensional ultrasonography in the diagnosis of fetal hand deformity, such as ectrodactyly with fingers abnormal morphology and wrist or finger abnormal posture, can make up for the shortage of two-dimensional ultrasonography and obtain more diagnostic information.