Objective To analyse the clinicopathological features of primary small intestine lymphoma(PSIL), and explore the relationship between clinical stage,histological findings,therapeutic modality and prognosis. Methods The clinical data of 34 cases of PSIL were collected,the pathohistological features and results of immunohistochemical examinations were obtained,and the follow-up findings were adopted for comprehensive analysis. Results Among these 34 cases of PSIL,abdominal pain or discomfort,gastrointestinal bleeding and abdominal mass were the predominant symptoms.PSIL mainly involved ileum,especially the bottom of ileum and ileocecal area.Among the 26 patients with follow-up for more than one year,the 1-year survival rate was significantly higher in patients without tumor perforation than those with tumor perforation(76.2% vs 20.0%)(P

OBJECTIVE: To summarize the subtle anatomical structures of the normal nasal bone in multi-slice spiral CT (MSCT) image through the observation of the three-dimensional images. METHODS: One hundred and twenty volunteers who had no nasal trauma and disease history were collected. The nasal was scanned using MSCT. Raw data was reconstructed into bone window images (slice thickness 0.6 mm, slice interval 0.5 mm), and then the images were imported into Syngo Imaging XS software to reconstruct three-dimensional images and to summarize the nasal bone's subtle anatomical structures. RESULTS: The subtle anatomy of normal nasal bone generally included four seams, two holes and one edge. The four seams were left and right nasal-maxillary suture, nasal-frontal seam, and internasal suture. The two holes were left and right nasal aperture. The edge of the nasal was the lower edge of the nasal bone. In addition, there was suture bone in internasal suture in some normal nose. The nasal aperture mostly was hole-like, but some nasal apertures were line shape. The nasal edge can be divided into flat type, wave-shaped type, inverted spike type, hook-shaped type and others. CONCLUSION The anatomy diversity and individual differences in nasal bone are large. MSCT and three-dimensional image reconstruction techniques, combined with the history of trauma could distinguish between the normal anatomy and fractures.
Fractures, Bone/diagnosis* ; Humans ; Image Processing, Computer-Assisted ; Imaging, Three-Dimensional ; Maxilla ; Nasal Bone/diagnostic imaging* ; Software ; Tomography, Spiral Computed ; Tomography, X-Ray Computed

OBJECTIVE: To realize the automated assessment of the levels of epiphysis of distal radius and ulna by support vector machine (SVM). METHODS: The X-ray films of the left wrist joints were taken from 140 teenagers aged from 11 to 19 years old as training samples. The levels of epiphysis of distal radius and ulna were divided into five developmental levels. Each level contained 28 samples. Another 35 cases were selected as independent verifying samples. SVM classification models of the five developmental levels of epiphysis of distal radius and ulna were established. The internal cross validation was made by leave one out cross validation (LOOCV), while the external validation was made by histogram of oriented gradient (HOG), and then the accuracy (PA) of testing results was calculated, respectively. RESULTS: The PA of SVM, LOOCV and HOG of distal radius epiphyseal level were 100%, 78.6%, and 82.8%, respectively; whereas the PA of SVM, LOOCV and HOG of distal ulna epiphyseal level were 100.0%, 80.0% and 88.6%, respectively. CONCLUSION The SVM-based automatic models of the growth stage of distal ra- dius and ulna appear to have certain feasibility, and may provide a foundation for software development of bone age assessment by forensic medicine.
Adolescent ; Bone Development/physiology* ; Child ; Epiphyses/growth & development* ; Female ; Humans ; Image Processing, Computer-Assisted/methods* ; Male ; Radius/growth & development* ; Support Vector Machine ; Ulna/growth & development* ; Wrist/growth & development* ; Wrist Joint/growth & development* ; Young Adult

OBJECTIVETo observe the changes of systemic and pulmonary hemodynamics and the plasma levels of inducible nitric oxide synthase (iNOS) and endothelin-1 (ET-1) and investigate their association in patients with hepatopulmonary syndrome (HPS).

METHODSTwenty-six patients with HPS undergoing orthotopic liver transplantation (OLT) were enrolled in this study with 20 patients without hypoxemia as the control group. Blood samples were taken one day before OLT to measure the plasma levels of iNOS and ET-1 using fluorescence quantitative polymerase chain reaction (FQ-PCR) and radioimmunoassay, respectively, with 10 healthy volunteers serving as the healthy control group. Before the operation for OLT, the parameters of systemic and pulmonary hemodynamics were monitored after anesthesia induction.

RESULTSThe systemic and pulmonary hemodynamics in patients without hypoxemia was characterized by high cardiac output and low resistance, and by comparison, the patients with HPS showed even higher cardiac output and lower mean pulmonary artery pressure, pulmonary artery wedge pressure, systemic vascular resistance and pulmonary vascular resistance. The two patient groups had comparable plasma iNOS and ET-1 levels, which were both higher than those in the healthy control group.

CONCLUSIONThe hemodynamics in patients with end-stage liver disease exhibit a pattern of high cardiac output and low resistance, which is more obvious in HPS patients possibly in association with elevated plasma levels of iNOS and ET-1.

Adult ; Aged ; Case-Control Studies ; Endothelin-1 ; blood ; Female ; Hemodynamics ; physiology ; Hepatopulmonary Syndrome ; blood ; physiopathology ; Humans ; Male ; Middle Aged ; Nitric Oxide Synthase Type II ; blood ; Pulmonary Circulation ; physiology ; Young Adult

OBJECTIVETo investigate the clinical effect of bridging fixation with locking plate for the Seinsheimer type V subtrochanteric femoral fracture.

METHODSFrom March 2009 to September 2014,18 cases of Seinsheimer type V subtrochanteric femoral fracture were treated by open reduction and bridging fixation with locking plate through proximal and distal approach including 16 males and 2 females with an average age of 41 years old ranging from 22 to 67 years old. Among them, 12 cases caused by traffic accident, 5 cases by falling, 1 case by heavy aboving. All cases were fresh and closed fractures. Time between injury and operation was from 4 to 9 days with an average of 6.2 days. Of them, 11 cases were fixed with reverse LISS and the other 7 cases were fixed with anatomical locking plates of proximal femur.

RESULTSThe mean time of operation was 110 min (ranged from 90 to 155 min). The mean blood loss during operation was 425 ml (ranged from 350 to 650 ml) and 16 cases got blood transfusion which was meanly 300 ml. The mean hospital time was 14 days (ranged from 12 to 18 days). The mean duration of followed up was 11.8 months (ranged from 8 to 22 months). The mean time of bone union was 6.6 months (ranged from 5 to 8 months). There was not any complication such as infection, implant failure, hip varus, external rotation deformity of low limb or fat embolism. The Sanders hip scores were 53.22 ± 6.48, the result was excellent in 12 cases and good in 6 cases at the last follow-up.

CONCLUSIONUnder the principle of biological osteosynthesis, treatment of Seinsheimer type V subtrochanteric femoral fracture with bridging locking plate fixation has such advantages as high mechanism, less interference of blood supply, stable fixation and little complication. It is a safe and idea way for the treatment of the Seinsheimer type V subtrochanteric femoral fracture.

Adult ; Aged ; Bone Plates ; Female ; Fracture Fixation, Internal ; methods ; Hip Fractures ; surgery ; Humans ; Male ; Middle Aged

OBJECTIVETo investigate the effect of pH value and fluoride ions on the corrosion resistance of pure Ti and Ni-Cr-Ti alloy in the artificial saliva.

METHODSElectrochemical technique was used to measure the electric potential of corrosion (Ecorr), current density of corrosion (Icorr) and polarization resistance (Rp) of pure titanium and Ti-Ni-Cr alloy in the artificial saliva with different pH value and fluoride concentrations. After electrochemical analysis, microstructure and phase diffraction were examined by FSEM.

RESULTSWith the lower pH value, the Ecorr and Icorr of pure titanium and Ti-Ni-Cr alloy increased, the Rp decreased, there was a significant difference (P<0.05). The Ecorr and Icorr increased markedly, the Rp significantly reduced in the artificial saliva containing 0.2% NaF (P<0.01). FSEM showed that pure titanium and Ti-Ni-Cr alloy surface corrosion, pure titanium in the artificial saliva containing 0.2% NaF was most serious.

CONCLUSIONLower pH value decreases the corrosion resistance of pure titanium and Ti-Ni-Cr alloy and the artificial saliva containing fluoride ions decreases the corrosion resistance of pure titanium.

Chromium Alloys ; chemistry ; Corrosion ; Dental Alloys ; chemistry ; Electrochemistry ; Fluorides ; chemistry ; Hydrogen-Ion Concentration ; Materials Testing ; Metal Ceramic Alloys ; chemistry ; Nickel ; chemistry ; Saliva, Artificial ; chemistry ; Surface Properties ; Titanium ; chemistry

OBJECTIVETo investigate the role of sodium cromoglycate in brain protection and its effects on brain tumor necrosis factor-alpha (TNF-alpha) and interleukin-1beta (IL-1beta) expressions after global cerebral ischemia-reperfusion (IR) injury in gerbils.

METHODSTwenty-four healthy male gerbils were randomized into 3 equal groups, namely the sham-operated group with isolation of the bilateral carotid arteries but without occlusion, IR injury model group with bilateral carotid artery occlusion, and sodium cromoglycate treatment group with bilateral carotid artery occlusion and sodium cromoglycate administration at 25 mg/kg via the lingual vein as soon as the reperfusion start with another dose 1 h later. The animals were then sacrificed and the thalamus were removed, fixed in 10% formaldehyde and sliced for observation under light microscope with HE staining. The rest brain tissues were prepared into homogenate to determine the content of TNF-alpha and IL-1beta. The right hemispheres of the gerbils were measured for wet weight and dry weight to calculate the water content in the brain.

RESULTSThe water content in the brain of the gerbils in the model group was the highest among the groups, and that in sodium cromoglycate treatment group was significantly less than that of the model group (P<0.05). Microscopic examination showed the most severe brain tissue damage in the model group with also the highest TNF-alpha and IL-1beta levels in the brain. The brain TNF-alpha and IL-1beta levels in sodium cromoglycate group were significantly decreased as compared with those in the model group (P<0.05).

CONCLUSIONSodium cromoglycate can alleviate brain IR injury possibly by lowering the TNF-alpha and IL-1beta levels in the brain tissues.

Animals ; Brain Ischemia ; metabolism ; Cromolyn Sodium ; pharmacology ; Gerbillinae ; Interleukin-1beta ; metabolism ; Male ; Neuroprotective Agents ; pharmacology ; Random Allocation ; Reperfusion Injury ; prevention & control ; Tumor Necrosis Factor-alpha ; metabolism

This study was designed to evaluate the effects of drilling through the growth plate and using adipose-derived stem cells (ADSCs) and bone morphogenetic protein-2 (BMP-2) to treat femoral head epiphyseal ischemic necrosis,which can be done in juvenile rabbits.Passage-four bromodeoxyuridine (BrdU)-labeled ADSCs were cultured,assayed with MTT to determine their viability and stained with alizarin red dye to determine their osteogenic ability.Two-month-old,healthy male rabbits (1.2 to 1.4 kg,n=45) underwent ischemic induction and were randomly divided into five groups (group A:animal model control;group B:drilling;group C:drilling & ADSCs;group D:drilling & BMP-2;and group E:drilling & ADSCs & BMP-2).Magnetic resonance imaging (MRI),X-ray imaging,hematoxylin and eosin staining and BrdU immunofluorescence detection were applied 4,6 and 10 weeks after treatment.Approximately 90％ of the ADSCs were labeled with BrdU and showed good viability and osteogenic ability.Similar results were observed in the rabbits in groups C and E at weeks 6 and 10.The animals of groups C and E demonstrated normal hip structure and improved femoral epiphyseal quotients and trabecular areas compared with those of the groups A and B (P＜0.01).Group D demonstrated improved femoral epiphyseal quotients and trabecular areas compared with those of groups A and B (P＜0.05).In summary,drilling through the growth plate combined with ADSC and BMP-2 treatments induced new bone formation and protected the femoral head epiphysis from collapsing in a juvenile rabbit model of femoral head epiphyseal ischemic necrosis.

Objective To analyze the forensic characteristics of 24 psychiatric patients who died of long-term use of psychotropic drugs.Methods Cases of sudden death of psychiatric patients from2011 to 2016 were collected.The forensic characteristics of these sudden deaths were retrospectively analyzed by systematic investigation plus results of autopsy and toxics (drugs).Results Among the 24psychiatric patients who died of long-term use of psychotropic substances, the ratio of male to female was 1.7∶1, and the average age was (59.0±8.8) years.Fifteen patients had clear disease durations (14.4±8.2) years, and other the nine were known to have disease durations of over 3 years.The death time of 62.5％of patients was the daytime in working days, and 91.7％of the patients died at home.Most patients complained different degrees of physical discomfort before death.Patients with schizophrenia (20 cases) were the most common, followed by depression (4 cases).All patients had the history of taking psychotropic drugs, with clozapine and chlorpromazine being the mostly detected ones.The causes of death were mainly circulatory diseases (15 cases), with the most common being myocarditis (11 cases) followed by pneumonia (4 cases).Conclusion Critical attention should be paid to the risk of antipsychotics-induced sudden unexpected deaths for psychiatric patients, particularly for those with schizophrenia.

OBJECTIVETo investigate cardiac function impairment and myocardial injury in rats with intestinal ischemia-reperfusion and the protective effect of cromolyn sodium.

METHODSThirty-two SD rats were randomized into 4 groups (n=8), namely the sham operation group, model group, 50 mg/kg cromolyn sodium group, and 25 mg/kg cromolyn sodium group. Intestinal damage was induced by clamping the superior mesenteric artery for 45 min followed by reperfusion for 60 min. Cromolyn Sodium was administrated intaperitoneally 15 min before reperfusion. The heart rate (HR), left ventricle pressure (LVSP), and the maximal/minimum rate of LVSP (+dp/dt(max), -dp/dt(max)) were sacrificed immediately before ischemia (baseline, T(0)), at 15 min (T(1)), 30 min (T(2)), 45 min (T(3)) of ischemia, and at 3 min (T(4)), 5 min (T(5)), 10 min (T(6)), 15 min (T(7)), 45 min (T(8)), 60 min (T(9)) of reperfusion. At the end of the experiment, the rats were executed and the hearts were immediately removed for observation of the pathological changes and determination of MDA contents and SOD activity.

RESULTSCompared with the baseline T(0), the HR, +dp/dt(max), -dp/dt(max) and the LVSP were decreased significantly at T(8) and T(9) in the model group and the two cromolyn sodium groups (P<0.05). Compared with the sham operation group, these indices were also significantly decreased at T(8) and T(9) in the model group and the two cromolyn sodium groups, but the model group had significantly lower levels for these indices at T(8) and T(9) than the two cromolyn sodium groups (P<0.05). The score of myocardial injury in the model group and the two cromolyn sodium groups were significantly higher than that of group A, and 50 mg/kg cromolyn sodium group had lower score than the model group (P<0.05). The rats in the model group had significantly higher MDA levels than those in the sham operation group and the 50 mg/kg cromolyn sodium group. SOD activities in the model group and 25 mg/kg cromolyn sodium group was lower than that in the sham operation group (P<0.05), but 50 mg/kg cromolyn sodium group had significantly higher SOD activities than the model group (P<0.05).

CONCLUSIONCromolyn sodium can protect the myocardium against intestal ischemia-reperfusion injury and improve the cardiac function.

Animals ; Cardiotonic Agents ; pharmacology ; Cromolyn Sodium ; pharmacology ; Female ; Heart ; drug effects ; physiopathology ; Heart Rate ; drug effects ; Intestines ; blood supply ; Male ; Malondialdehyde ; blood ; metabolism ; Myocardium ; metabolism ; pathology ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Reperfusion Injury ; blood ; prevention & control ; Superoxide Dismutase ; blood ; metabolism ; Time Factors