Objective:To establish a real time dissolution determination method for furosemide tablets and compare the similarity of dissolution curves of furosemide tablets from 11 generic drug manufacturers and the original research drug manufacturer in four kinds of dissolution media to evaluate the overall situation of dissolution process of furosemide tablets in our country. Methods:A fiber-optic medicine dissolution process real time test system was used to monitor the dissolution process of furosemide tablets from 11 generic drug manufacturers and the original research drug manufacturer. A paddle method was applied and the rotation speed was 50 r·min-1 . The dissolution medium was pH 1. 2 hydrochloric acid solution, pH 4. 0 acetate buffer, pH 6. 8 phosphate buffer and water, respectively with volume of 900 ml. The absorbance wavelength was 277 nm. The dissolution profile was drawn and f 2 factor was used to evaluate the similarity. Results:The dissolution tests were not influenced by the excipients and the dissolution media. The liner range of furose-mide was 4. 44-26. 66 μg·ml-1(r=0. 9997). The average recovery of furosemide was 101. 26% and RSD was 1. 84%(n=9). Ee-spect to 11 manufactures, there was only one of the dissolution similarity can meet the requirements. Conclusion:A simple, fast and accurate fiber-optic method for medicine dissolution process real time test is established. The method can reflect the real dissolution and provide the information on how to improve the preparation technology and monitor the stability of the preparation technology.

Objective To explore clinical characteristics of diagnosis and treatment of solid-cystic papillary tumor(SCPT) of the pancreas in children.Methods There were retrospectively analyzed about the 7 patients treated in our hospital for SCPT,with the ave-rage age of 11.5 years.All patients complained abdominal pain following a trauma(71.4%) or overeating(28.6%).The main presentation was abdominal mass.Of the 7 patients,4 received distal pancreatectomy,2 pancreatico-duodenectomy,and 1 only biopsy.Results The nicks of all patients were primany hed.All patients were pathologically confirmed as SCPT after operation.All patients were followed up for 4 monthes to 4.5 years,the recent result was well.Conclusions SCPT is a low-grade malignant tumor,which is often asymptomatic,but the patients with symptoms generally suffer from an abdominal mass or abdominal pain.The prognosis is excellent after operation.

Objective To study the safety and efficacy of ultrasound-guided puncture combined with surgical resection for liquefied cavitary hepatic alveolar echinococcosis (HAE).Methods A retrospective study was conducted on 17 patients who had liquefied cavitary HAE and were treated at the Affiliated Hospital of Qinghai University from January 2014 to August 2016.Ten patients were treated with ultrasound-guided puncture combined with surgical resection (the case group),and 7 patients were treated with resection (the control group).The basic characteristics,operation time,blood loss during operation,preoperative and postoperative laboratory tests and complications were compared between the 2 groups.Results There were no significant differences between the 2 groups in basic characteristics,such as age,gender,and lesion diameter (P ＞ 0.05).The operation time and blood loss during operation showed significant differences between the 2 groups,(308.0 ± 23.0) min (389.0 ± 95.7) min and (1 360.0 ± 182.9) ml vs.(1 607.1 ± 205.0) ml,respectively (all P ＜ 0.05).The prothrombin time (PT) after day 3 of operation and alanine aminotransferase level after day 5 of operation showed significant differences between the 2 groups,(13.8 ±0.9) s vs.(15.5 ±1.7) s and (81.9 ±20.9) U/L vs.(108.1 ±29.5) U/L,respectively (all P ＜ 0.05).There was no significant difference in postoperative complications between the 2 groups.Conclusions Ultrasound-guided puncture combined with surgical resection shortened the operation time,reduced blood loss and avoided serious complications after surgery.This treatment is efficacious and safe for liquefied cavitary HAE.

Objective To evaluate specific clinical and imaging features of osteogenesis imperfecta V and to improve diagnostic accuracy of this disease. Methods Data of 15 patients with osteogenesis imperfecta type V were retrospectively analyzed for their clinical and imaging features. There were 10 males and 5 females, aged from 1 year and 30 years old (median age,12.5 years ). All 15 patients had plain X-ray, and 4 of 15 had CT. All data were analyzed by 3 experienced deputy chief doctors in OI according to OI V standard. Results X-ray:calcification of the interosseous membrane between radius-ulna was detected in all patients and calcification of the interosseous membrane between tibia-fibula was detected in 2 of 15 patients. Dislocation of the radial head was seen in 13 of 15 patients,bilateral in 9 and utilateral in 4.All patients showed restriction in the pronation and supination of the forearm and restricton in the flexion and extention of the elbow joint. Patients with dislocation of raidal head were associated with large coronoid process and olecranon of the ulna. Hyperplastic callus of the extremities were detected in 7 of 15 patients (7 at femur , 3 at humerus, 1 at tibia.In early stage, hyperplastic callus showed thin cortice, and clear boundares with the diaphysis showing and low density, irregular, mesh-like lamellation inside. In the later stage, there were dense calcification inside hyperplastic callus, and no difference in density with the diaphysis. Diaphysis surrounded by hyperplastic callus had clear boundaries with the hyperplastic callus. No cortical destruction was detected. CT:there were sparse needle-dot calcification inside hyperplastic callus, with the patterns of granular, ring-and-arch,irregular streaky mineralization. The cross section of proximal femoral shaft showed irregular shape , flat square shape and tiny medullary cavity, with no calcification on the edge of hyperplastic callus. CT value:-91 HU inside hyperplastic callus; 283 HU in femoral shaft. Conclusions Interosseous membrane between radius-ulna or tibia-fibula, hyperplastic callus ,dislocation of the radial head are specific features in osteogenesis imperfecta V. X-ray can make a definitive diagnosis of osteogenesis imperfecta V. CT scan is helpful in the differential diagnosis of osteogenesis imperfecta V from osteosarcoma.

Objective:To explore the effect of histone demethylase JMJD3 on B cell activation and apoptosis.Methods:B cells were sorted and purified from the peripheral blood of healthy people and SLE patients by using magnetic bead.After B cells were treated with IFN-αor R848 or IFN-α+R848,the percentages of CD86+B cells,CD69+B cells,CD86+Annexin V+B cells and CD69+Annexin V+B cells were detected by flow cytometry.The expression of JMJD3 was detected by Real Time PCR and Western blot.Results:The purity of sorted B cells was up to 95%.IFN-αenhanced both the activation and apoptosis and the JMJD3 expression of TLR7-activated B cells.The expression of JMJD3 was dependent on MAPK signal pathway,but not the NF-κB signaling pathway.Moreover,JMJD3 was highly expressed in B cells of peripheral blood from SLE patients compared to those from healthy people.Furthermore,JMJD3 inhibitors could inhibit the activation and apoptosis of IFN-αand R848 activated B cells.Conclusion:JMJD3 participated in the activation and apoptosis of IFN-αand TLR7-induced B cells, suggesting JMJD3 inhibitors may possess therapeutic effect for alleviating symptom of SLE.

Objective:To explore the change of B cell numbers in active MRL/lpr lupus mice , and their regulation mechanisms.Methods:B cell cycle and the percent of B cells in spleen lymphocytes of active MRL /lpr lupus mice and normal C 57/B6 mice were analyzed by using flow cytometry .The apoptotic B cells and their subclass were analyzed by Annexin V and PI staining.Further more ,B cells were purified by magnetic sorting , and real-time quantitative PCR was carried out to detect apoptosis-related gene.Results:Compared with the C57/B6 mice,the percent of B cells in active MRL/lpr lupus mice were significantly reduced (P<0.01),while the percent of apoptotic cells were significantly increased (P<0.01).The percent of early apoptotic B cells were sig-nificantly increased ( P <0.01 ) which including the immature and mature B cells , while the late apoptotic B cells were unchanged.Further more,we found that the anti-apoptotic protein BIRC3 was significantly reduced in active lupus B cells (P<0.01), while the pro-apoptotic protein BCL2L1 and BBC3(PUMA) were significantly increased(P<0.01).Conclusion: B cells in active lupus mice were significantly reduced while early apoptotic B cells were increased , which may be attributed to the changed balance between the anti-apoptotic and pro-apoptotic proteins , suggesting the reduction of B cells in SLE patients may be related to their increased early apoptosis .

BACKGROUNDTo study the methods for monitoring nephrotoxicity of cisplatin in lung cancer chemotherapy.

METHODSThe serum urea nitrogen (BUN), creatine (Cr) and urine β2-microglobulin ( β2-MG),α1-microglobulin(α1-MG), albumin (Alb), transferrin (TRF), and retinol-binding-protein (RBP) were measured dynamically in 61 patients with lung cancer who received high-dose chemotherapy with DDP (80- 120 mg/m2) (totally 114 cycles), and some indexes of early nephrotxcity were screened.

RESULTSAt the early stage of chemotherapy (d1-5), the abnormal rates of urine β2-MG and α1-MG were much more predominant than those of other indexes (P < 0.001). The abnormal rates of serum BUN and Cr were increased significantly in the late period of chemotherapy (d10). There were abnormal elevation of urine β2-MG and/or α1-MG at the early stage of chemotherapy for the patients whose serum BUN and creatine were all abnormal at the late stage.

CONCLUSIONSThe urine β2-MG and /or α1-MG might be the valuable indexes for early diagnosis of nephrotoxicity in lung cancer chemotherapy with cisplatin.

OBJECTIVETo determine the expression of S100-beta protein and glial fibrillary acidic protein (GFAP) in hippocampal astrocytes of rats with Alzheimer disease (AD) model rats, and observe the effect of butylphthalide on their expression.

METHODSSixty male adult rats were randomized equally into model group, butylphthalide group, and control group, and in the former two groups, AD models were established by injecting beta-amyloid protein 1-40 into the hippocampus. Sixty days later, the rats were sacrificed and the bilateral hippocampuses were taken for immunohistochemistry.

RESULTSThe number of cells positive for S100 and GFAP in the hippocampus in butylphthalide group were significantly higher than that in the control group (P/0.01), but lower than that in the model group (P/0.05).

CONCLUSIONThe expression of S100 protein and glial fibrillary acidic protein increased significantly in the hippocampal astrocytes of rats with AD, and butylphthalide can inhibit the increase of their expression.

Alzheimer Disease ; chemically induced ; metabolism ; Amyloid beta-Peptides ; Animals ; Benzofurans ; pharmacology ; Disease Models, Animal ; Glial Fibrillary Acidic Protein ; metabolism ; Hippocampus ; metabolism ; Male ; Nerve Growth Factors ; metabolism ; Neuroprotective Agents ; pharmacology ; Peptide Fragments ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; S100 Calcium Binding Protein beta Subunit ; S100 Proteins ; metabolism

OBJECTIVETo determine the effect of butylphthalide on the expressions of p38 mitogen-activated protein kinase and extra-cellular signal regulated kinases (ERKs) in the brain tissue of rats with Alzheimer's disease (AD).

METHODSSixty male adult rats were randomly divided to AD model group, butylphthalide group, and control group (n=20). AD models were established by injecting beta-amyloid protein 1-42 into the hippocampus of rats. Sixty days later, the learning and memory abilities of the rats were evaluated using Y-maze test, and the expressions of p38 and ERKs in the brain tissue of the rats were measured by immunohistochemistry. RESULTS Compared with the control group, the rats in AD model group exhibited significantly reduced learning and memory abilities, increased expressions of P38 in the hippocampus and lowered expression of ERK in the cortex (P<0.01). In comparison with the model group, the rats in the butylphthalide group showed significantly decreased P38-positive cells in the hippocampus and increased expression of ERK in the cortex (P<0.01).

CONCLUSIONSButylphthalide improves the learning and memory abilities of rats with experimental AD, the mechanism of which may involve inhibition of P38 expression and enhancement of ERK expression in the brain tissues.

Alzheimer Disease ; enzymology ; metabolism ; physiopathology ; Animals ; Benzofurans ; pharmacology ; Extracellular Signal-Regulated MAP Kinases ; metabolism ; Gene Expression Regulation, Enzymologic ; drug effects ; Hippocampus ; drug effects ; metabolism ; Male ; Memory ; drug effects ; Neuroprotective Agents ; pharmacology ; Rats ; Rats, Sprague-Dawley ; p38 Mitogen-Activated Protein Kinases ; antagonists & inhibitors

Objective To evaluate the effect of myocardial viability on left ventricular function after elective revascularization in patients with myocardial infarction by 99Tcm-MIBI and 18F-FDG dual-isotope simultaneous acquisition (DISA) myocardial perfusion-metabolic imaging. Methods Ninety-one patients clinically confirmed of myocardial infarction underwent DISA imaging. Based on the results of echocardiography, the patients were divided into heart failure group (group A) and normal cardiac function group (group B). After PCI, left ventricular function was measured by echocardiography in 1, 3 and 6 months. The t-test and χ2-test were used to compare the difference between the two groups using SPSS 13.0. Results The average number of diseased segments by myocardial perfusion imaging was 9.8±3.5 and 5.4±2.6 in groups A and B, respectively (t=6.87, P<0.01). The average number of diseased segments by myocardial metabolic imaging was 7.5±3.4 and 4.6±2.8 in groups A and B, respectively (t=4.46, P<0.01). There were 173 segments with viable myocardium (173/458: 37.8%) in group A and 188 segments with viable myocardium (188/307: 61.2%) in group B (χ2=40.61, P<0.001). The summed perfusion score (SPS), summed metabolism score (SMS) and summed difference score (SDS=SMS-SPS) were 28.43±11.86 vs 21.36±9.54, 20.17±8.52 vs 15.19±5.74 and 0.39±3.17 vs -12.72±4.55, respectively in groups A and B (t=3.15, P<0.01; t=3.32, P<0.01; t=15.59, P<0.01). The mean change of LVEF (ΔLVEF) and the mean change of left ventricular end-diastole dimension (ΔLVEDd) of the patients with more than 4 viable myocardial segments in group A were significantly more than those in group B( (12.81±2.62)% vs (5.90±1.91)%, t=16.33, P<0.001; (-13.13±4.20) mm vs (-7.75±2.31) mm, t=6.86, P<0.001). However, the ΔLVEF and ΔLVEDd of the patients with less than 4 viable myocardial segments in group A were significantly less than those in group B (t=3.25, P<0.01; t=4.92, P<0.001). Conclusion The amount of viable myocardium in infarct myocardium is an important factor for left ventricular function recovery after elective revascularization.