Animals ; Asthma ; etiology ; Eosinophils ; physiology ; Mice

S2001 field X-ray vehicle is used to perform X-ray examination in the field hospital, while the disadvantages of the traditional film-screen radiography restrict its role of field examination in this digital era. By analyzing the detail of modern digital X-ray radiography, and comparing three different digital X-ray flat detectors, a solution is put forward to update S2001 field X-ray vehicle to a field digital X- ray radiography vehicle by using Canon CXDI digital X- ray detector.

Early diagnosis of inflammation and properly interfere to improve the prognosis are very important.However,it is difficult to verify inflammation or differentiate inflammation from infection in clinic,especially in the condition of underlying inflammation.Currently,radiopharmaceuticals based on researches of pathophysiology progress of diseases are studied constantly.This review summarizes the potential inflammation imaging radiotracers and their mechanisms,potential clinical application value.

MicroRNAs(miRNAs) are small mm-coding RNA molecules that post-transcriptionul-ly regulate gene expression. Advanced studies show that miRNA are involved in cancer. Even some scientists regard miRNAs as oncogenes or tumor associated genes. This review tries to have a brief introduction on the progress in the relationship between miRNAs and tumor's formation,development,diagnosis,therapy and prognosis in humans.

Objective To establish a model of immune-mediated inner ear disease(IMIED) and to compare the efficacy of dexamethasone between systemic application and round window adminstration. Methods The guinea pigs were injected with keyhole limpet hemocyanin(KLH) mixed with complete Freund's adjuvant subcutaneouly in the back,and were boosted with KLH mixed with incomplete Freund's adjuvant two weeks later.Meanwhile,a small piece of gelatin sponge full of KLH was delivered on the round window through operation.Thus established a model of IMIED.Micro-osmotic pumps were used to deliver dexamethasone through the round window(PBS control group also set),and systemic application was implemented by intraperitoneal injection.The efficacy was compared by recording auditory brain-stem response(ABR) before and after the treatment. Results None of the 6 guinea pigs in the control group experienced significant hearing loss,while 22 of the 39 guinea pigs in the experiment group suffered from hearing loss beyond 10 dB.Seventeen guinea pigs with hearing loss no less than 15 dB were divided into three groups randomly and were given different treatment.Those(n=6) treated by local application through the round window enjoyed the efficacy and the mean ABR threshold decreased 13.3 dB.Four out of the 6 treated by systemic application enjoyed the efficacy and the mean ABR threshold decreased 13.7 dB.No efficacy was observed in the PBS group. Conclusion The model of IMIED can be successfully induce by KLH through the round window,and dexamethasone administered through the round window is as efficacious as systemic application.

Humans ; Infant ; Male ; Mycoses ; pathology ; Penicillium ; isolation & purification

Objective:To investigate the clinical efficacy of every 3-week regimen of oxaliplatin (OXA) plus 5-fluorouracil (5-FU)/leucovorin(CF)as postoperative adjuvant chemotherapy for colorectal cancer.Methods:Ninety eight patients with stage Ⅱ to stage Ⅲ colorectal cancer received every 3-week OXA plus 5-FU/CF adjuvant chemotherapy for six cycles after resection surgery. All the patients received a complete reexamination every 3 months after the end of adjuvant chemotherapy. The disease-free survival period and 1- and 2-year disease-free survival rates were observed.Results:The total 2-year disease-free survival rate was 74.5%. It was 87.0% for stageⅡpatients and 63.5% for stage Ⅲ patients. The main adverse reaction included peripheral neurotoxicity, neutropenia and diarrhea at grades Ⅰ to Ⅱ. Grades Ⅲ to Ⅳ adverse reactions occurred rarely.Conclusion:The every 3-week OXA combined with 5-FU/CF adjuvant chemotherapy regimen had definite efficacy and good tolerance, which was a rational choice of postoperative adjuvant chemotherapy for colorectal cancer.

Objective For drinking water deep treatment,this study compared the abilities of several common domestic products of activated carbon in virus removal from water through adsorption. Methods This study compared the abilities in virus removal of two types of granular activated carbon (GAC) materials (domestic product made of coconut shell) and one type of activated carbon fiber (ACF) material (domestic product made of mucilage glue-based ACF felt) under a fixed condition (phosphate buffered saline-PBS solution,pH =7.3,25 ℃) and the abilities of one of the above two GAC types under various conditions (before and after pretreatment,15-35 ℃,pH= 6.0-8.4,concentration of Ca2+ 0-500 mg/L,ionic strength 0-0.1 mol/L). The tested virus was the indicator phages obtained from sewage with an enterobacterium (Escherichia coli 285). Results The removal process with the GACs followed the first order kinetic model (R2: 0.83-0.99),whereas that of the ACF did not (R2: 0.44-0.64),with the rate constants of 0.505 3-2.606 8 (GACs) and 0.219 2-0.413 8 (ACF). Pretreatment (boiling for 2 h and then washing in deionized water) could both increase and decrease the removal effects,depending on the GAC sources. Different abilities in virus removal were found between the two GACs with their comparative outcomes depending on if they were subject to the pretreatment; higher levels of temperature,Ca2+ concentration,and ionic strength,and slight acidic and alkaline conditions favored virus removal. Calculation from the first order kinetic simulation showed that: the removal percentage within 15 min was around 30% with the highest 40% and the lowest 5%; and the maximum removal during the experimental period of 5 h reached 5-log. Although the amount (1 g) of the GACs used was ten times of that of the ACF (0.1 g),the measured values showed that the latter had faster initial removal rates than the former. Conclusion The three domestic products of activated carbon showed a large difference in their abilities to remove the viruses from water through adsorption with their comparative outcomes depending on the experimental conditions. If the short duration (about 15 min) currently employed in activated carbon treatment process is considered,it will be necessary to study the ways in promoting virus removal through adsorption onto the activated carbon materials of domestic products used in this experiment.

[Objective]To investigate the methods of surgical treatment of complicated lumbar spinal stenosis. [Methods]Totally 176 patients who were diagnosed as having complicated lumbar spinal stenosis,operated by back decompression,fused by bone graft and internal fixed by pedicle screws from January 1997 to January 2001 were retrospectively analyzed.Ninety-eight were males and 78 were females,with an average age of 58.5 years.Patient history was from 2 to 31 years.Thirty-five patients had a previous surgery on lumbar vertebrae,and 19 patients had two or more.Forty patients were complicated with one degree degenerated olisthe,42 were complicated with lumbar scoliosis and Cobb's angle more than 20?,21 had lumbar unsteadiness after surgery,19 patients had spinal stenosis in juncture after surgery.One ore two segments intervertebral discs were removed and vertebral plate were closed together,fused by bone graft and fused articular process.To the patients with more than two segments affection,processus articularis and processus transverses were fused to the patients need not remove intervertebral disk or remove less than half of processus articularis and interbody vertebral were fused to the patient need remove intervertebral disk.Patients with scoliolosis were decompressed and inserted pedicle screws.Revolve rod combined with compression and brace technique was used to correct scoliolosis,fuse the disk and articular process to the patient with severe intervertebral disk hernia and others were fused post-lateraly.[Results]Operation time was from 80 to 250 minutes.Blood loss was from 450ml to 1600ml and no patient died.The follow-up duration averaged 5.6 years.Fused disks had good to excellent rate of 87.4%,and multi-segments had good to excellent rate of 86.1%,and combined with scoliolosis good to excellent rate of 89.8%.The Cobb's angle was average 6.7? and correct rate was 73.8%.The fused rate of post-lateral was 92%(60/65),while the interbody vertebral fused rate was 97.9%(139/142).[Conclusion]The operation of complicated lumbar spinal stenosis is difficult to operate and has high risk.Back decompression,fused by bone graft and internal fixation by pedicle screws is a good method.