BACKGROUND:Tamoxifen has been found to exert neuroprotection by reducing cerebral hemorrhage and edema surrounding the injured site of the spinal cord.
OBJECTIVE:To investigate the neuroprotective effect of tamoxifen on rat acute spinal cord injury and the underlying mechanism.
METHODS:Sixty Sprague-Dawley rats were equivalently randomized into five groups, and modeled into spinal cord injury at T10 level using modified Al en’s weight-drop method (70 g/cm), except those in sham operation group. At 30 minutes after modeling, al rats were given the intraperitoneal injection of 2.5, 5.0 and 10 mg/kg tamoxifen or same amount of normal saline, once daily. Basso, Beattie, Bresnahan (BBB) scores were recorded at 24, 48 and 72 hours after surgery. The injured spinal cord was removed at 72 hours to observe its edema. Meanwhile, the levels of interleukin-1β, interleukin-10 and tumor necrosis factor-α, as wel as Caspase-3 activity were detected by ELISA;the protein levels of nuclear factor-κB p65, phosphorylated I-κBαand Caspase-3 were detected by western blot assay.
RESULTS AND CONCLUSION:Compared with the model group, the hind limb function in the tamoxifen groups was significantly improved. Tamoxifen significantly decreased the water content in the rat spinal cord and inhibited spinal cord edema at 72 hours after surgery. ELISA results showed that tamoxifen significantly reduced the activity of interleukin-1β, interleukin-10, tumor necrosis factor-αand Caspase-3 (P<0.05). Western blot assay revealed that tamoxifen significantly downregulated the expression levels of nuclear factor-κB p65, phosphorylated I-κBαand Caspase-3. These results suggest that tamoxifen protects against spinal cord injury via suppressing inflammatory response and apoptosis-associated proteins.

Objective To investigate the histological detection and pleural effusion Mycobacterium tuberculosis and adenosine deaminase(ADA) activity assay value of tuberculous pleurisy.Methods 30 patients with tuberculous pleurisy were chosen as the research object,and selected another non-tuberculous pleurisy caused by pleural effusion in 30 patients as controls,patients received pleural puncture,take detect pleural effusion and pleural biopsy.Results A biopsy to confirm the diagnosis of tuberculous pleurisy in 18 cases,compared to 60.0 percent.Six cases of patients with pleural tissue biopsy again,a ratio of 20.0％.Pleural histopathology diagnosis was 80.0％.Patients with tuberculous pleurisy pleural effusion ADA average activity was (71.3 ± 16.2),which was significantly higher than that of the control [(19.3 ± 10.8)] (t =23.42,P ＜ 0.05).ADA-positive patients with tuberculous pleurisy was 86.7％,which was significantly higher than 3.3％ of the confrol group (x2 =14.64,P ＜ 0.05).Patients with tuberculous pleurisy pleural effusion TB-PCR positive rate was 6 6.7 ％,significantly higher than the 2 0.0 ％ (x2 =8.6 5,P ＜0.05).Application and histopathological examination of pleural effusion TB-PCR and ADA joint detection,diagnosis of tuberculous pleurisy was 100.0％,significantly higher than that of various methods alone(x2 =4.36,5.87,4.16,all P ＜ 0.05).Conclusion Histopathological examination of pleural effusion TB-PCR and ADA joint detection can improve diagnostic accuracy of tuberculous pleurisy.

Objective:To research the effects of HH singaling pathway on proliferation,apoptosis and CyclinD1 expression of breast cancer MDA-MB-231 cells by MDA-MB-231 cells treated with Cyclopamine,a HH singaling pathway inhibitor.Methods:MDA-MB-231 cells were treated with Cyclopamine.Cell proliferation was detected by MTT;Cell cycle distribution and apoptosis were analysed by flow cytometry(FCM).The mRNA levels of GLI1,CyclinD1 were measured by reverse transcription-polymerase chain reaction(RT-PCR);The protein level of CyclinD1 was detected by immunostaining of cell lines.Results:Compared with control group,Cyclopamine could significantly inhibit the proliferation of MDA-MB-231 cells in a dose-and time-dependent manner;By FCM the treatment of MDA-MB-231 cells with Cyclopamine induced a remarkable increase in the proportion of cells in the G0/G1 phase of the cell cycle and after 48 h the sub-G1 peak appeared.The mRNA levels of GLI1,CyclinD1 and the expression of CyclinD1 protein were reduced.Conclusion:The HH signaling pathway was activeted in MDA-MB-231 cells.HH signaling pathway inhibitor,Cyclopamine,could inhibit the proliferation,induce the apoptosis and reduce the expression of CyclinD1 in MDA-MB-231 cells.

Objective:Investigation on the characteristics of motorcycle accidentrelated fatalities,to provide the reliable information and reference data for the precaution and the reduction of the death rate of the traffic accident.Methods:Collect the information of the 145 people dead in the 135 cases of motorcycle accident which happened in the main urban zone of Chongqing city in 2004 examinated by the Chongqing Technical Authentication Center Of Road Traffic Accident,including the detailed process,time and place of accident as well as the means of transportation,the basic information,the injuries,and the main cause of death,which all were retrospectively analyzed.Results:Sex and age of the dead have the significant difference.In the aspect of the means of transportation,59.31% of the dead are drivers who under 40 ocuppy 79%,20% are passengers,20.69% are pedestrians who over 50 ocuppy 60%,instantly dead occupy 36.55% and dead after salvage occupy 63.45%.In the aspect of the cause of dying,craniocerebral injury occupy 65.52%,other injury or combined injury occupy 34.48% and 95.17% of the dead with the limbs injury which the ratio of the fracture of lower limb and the fracture of arm is 2.1:1.And the ratio of the second,third season and the first,fourth season is 1.64:1.Conclusion:The motorcycle accidents have the obvious features and the preventability.

Objective To evaluate the clinical effects of recombinant human epidermal growth factor (rhEGF) on wound healing of perianal absceess after operation.Methods 80 patients who received operation of perianal absceess were selected.The patients were randomly divided into the study group(n=40) and control group(n=40).All the patients underwent the treatment of anal abscess incision and drainage.The patients in the control group were disinfected routinely and treated by metronidazole,while the patients in the study group were treated by rhEGF after disinfection of saline.All patients were followed up for one month after surgery.The wound edema score,granulation growth and the healing time of the wound were recorded.Results One month after surgery,the wound edema score in the study group was less than that in the control group at any time.After 2 weeks and 4 weeks,the wound edema scores in the study group were (1.41±0.33)points,(0.54±0.11)points,which were significantly lower than (2.09±0.28)points,(1.37±0.16)points in the control group (t=9.937,27.036,all P<0.001).After 2 weeks and 4 weeks,the granulation growth scores in the study group were (1.71±0.38)points,(0.81±0.16)points,which were significantly lower than(2.16±0.38)points,(1.66±0.21)points in the control group (t=5.296,20.363,P<0.001).The healing time of the wound in the study group was (19.52±1.47)d,which was less than (25.49±1.75)d in the control group (t=16.521,P<0.05).Conclusion The rhEGF can distinctly promote wound healing and shorten the healing time of perianal absceess after operation,which is worthy of the clinical promotion.

Cardiomyopathy is a serious disease for children's health.With the development of medical methods,cardiac stem cell transplantation has brought hopes for treatment of cardiovascular diseases,it has also become a research hotspot in recent years.Several different types of cells have been used in cardiac stem cell transplantation currently,including embryonic stem cells,bone marrow derived stem cells,skeletal myoblasts,umbilical cord blood stem cells,adipose stem cells,etc.The delivery is including intramyocardial injection,intracoronary injection,intravenous injection,and tissue-engineered constructs.The adverse reactions are ventricular arrhythmias,oncogenic transformation,multiorgan seeding,unintended cell differentiation,accelerated atherogenesis and coronary thrombosis.

Colorimetry ; methods ; Humans ; Manganese ; urine ; Potassium Permanganate

Chondroblastoma of the patella, rare occurred in patellar,is a kind of an uncommon benign bone tumor. Compared with giant cell tumor, the morbidity of chondroblastoma is lower. Meanwhile, its clinical manifestations are various, and images are very complicated. Therefore, the understanding of this kind of tumors may be limited even to the orthopedist. The differences of patellar chondroblastoma between other tumor in X-ray, CT and MRI is a spot in recent years. Sometimes patellar chondroblastoma coexists with aneurysmal bone cyst, which is a challenge to obtain an accurate pathological and radiological diagnosis. For the treatment, curettage and bone grafting is one the most popular method, but whether to perform a biopsy before surgery still remain controversy. Some new technique still has an unknown prospect for the treatment such as radiofrequency ablation.
Bone Neoplasms ; diagnosis ; surgery ; Chondroblastoma ; diagnosis ; surgery ; Humans ; Patella ; surgery

Gene expression profile technology is characterized by high automation, high accuracy and large information volume, which provides a new way for the development of individualized therapies and novel therapeutic targets. Some researches have identified sets of discriminating genes by using gene expression profile technology that can be used for the predietion of response to radiotherapy in human cancers. Some studies also have confirmed the therapeutic tagerts of radiation sensitizer.