Child ; Cough ; chemically induced ; Disinfectants ; adverse effects ; Humans ; Irritants ; adverse effects ; Male

BACKGROUND:Basic fibroblast growth factor(bFGF)can promote production of collagen,fibronectin and matrix enzyme in healing wounds.However,dysregulation of this process,such as the abnormal coordination of cell proliferation,extracellular.matrix and neovasculadzation formation,or remodeling of the wound matrix will lead to excess accumulation of scar tissues.OBJECTIVE:To investigate effects of bFGF on normal skin wound healing and hypertrophic scar formation.METHODS:Normal and hypertrophic scar fibroblasts from tissue biopsies from 5 patients who underwent plastic surgery for repairing hypertrophic scars were isolated and cultured.The expressions of collagen,fibronectin and protein synthesis were detected by RT-PCR and ELISA.The mitochonddal membrane potential changes were measured using JC-1 staining and flow cytometry.Simultaneously,adenosine tdphosphate(ATP)levels were determined by chemiluminescence method.The effects of bFGF on these indexes of normal and hypertrophic scar fibroblasts were observed.RESULTS AND CONCLUSION:Hypertrophic scar fibroblasts become slower after being exposed to bFGF,which selectively inhibited type Ⅰ collagen production in hypertrophic scar fibroblasts(P<0.05).Although bFGF inhibited type]collagen production,it had no effect on type Ⅲ collagen expression in both normal and hypertrophic scar fibroblasts.However,fibronectin expression in the normal fibroblasts was up-reguleted after bFGF treatment(P<0.05).In addition,the mitochonddal membrane potential tended to depolarization,although no statistical difference,in hypertrophic scar fibroblasts treated with bFGF(10 or 100 μg/L).bFGF treatment increased the cellular ATP levels in the normal fibroblasts,while there were no significant alterations in the hypertrophic scar fibroblasts over a treatment of bFGF(10 or 100 μg/L,P<0.05).The results suggest that there are differential effects and mechanisms on the skin fibroblasts with bFGF treatment in normal wound healing and hypertrophic scar formation.

Aged ; Aged, 80 and over ; Anthracosis ; complications ; microbiology ; Cerebral Infarction ; etiology ; Cross Infection ; complications ; Humans ; Male ; Middle Aged ; Pneumonia ; complications

Immunosuppressive tumor microenvironment is a part of the tumor microenvironment that plays an immunosuppressive function.It consists of suppressor cells and inhibitory cytokines.In recent years,be-cause of its important role in tumor immunity,CAR-T and PD-1/PD-L1 signal pathway has become a hot top-ic of immunotherapy, which can suppress immune through different mechanisms to promote tumor progression. Therefore,taking more effective anti-tumor therapies against the above mechanisms is possible to rescue the pro-gress of tumor.In this article,the influence of immunosuppression microenvironment in CAR-T cell therapy and PD-1/PD-L1 signaling pathway in the anti-tumor process is reviewed.

This paper gives a brief introduction of the significance and background of the digital pictures' database in CQMU.It introduces its design methods,realization approaches,and solutions to the pictures' patent claim.Meanwhile this paper also han- dles its functions in editing pictures online,indexing pictures off line and its management.

Objective To establish a three- dimensional hindlimb gait data toolkit (THGT) for healthy and spinal cord injured (SCI) non-human primate (rhesus monkey) based on Matlab to realize upload of original data, automatic gait division, calculation and drawing of multiple gait parameters, etc. Methods Vicon system was used to collect three-dimensional hindlimb gait data of healthy and SCI (after 6 weeks) rhesus monkey to obtain the kinematics data of both hindlimbs in continuous strides. It was analyzed with THGT to process the gait division, calculation and drawing of multiple gait parameters. Results THGT read the data, distinguished cycles of gait, calculated 140 kinds of gait parameters and drew graphs of the results. Conclusion THGT extends the universality of the Vicon data, realizes automatically gait division and friendly interactive interface, and puts out the visible results.

Objective To investigate the effects of output power,action time and radiofrequency(RF) needle on the cool-tip radiofrequency ablation(RFA) by experimental tools and to determine the value of ultrasonography in size evaluation of RFA zone.Methods The cool-tip RFA to fresh calf liver were monitored by ultrasound.The experiments by single electrode needle were performed with different combination of output power (80 W,120 W) and time (5 min,8 min,10 min).The cluster needle was used for assessment at 5 min with different output power(80 W,120 W).After the end of trial,the longitudinal specimens were cut open.The view and size of the ablation zone were recorded with naked eyes.The pathological changes displayed by optical microscope were recorded as well.Results The measurement of ablation zone with naked eyes showed with the ablation zone expanded with time in 80 W-power cases,but the pace of expansion slowed down,but in 120 W-power cases,expansion of the ablation zone was not obvious; the ablation zone in 120 W-power was bigger than that in 80 W-power at 5 min,their difference decreased with time,and the ablation zones were similar at 10 min.The cluster needle can produce ablation zone with lesser aspect ratio than that of single electrode needle,consequently similar to circle.Ultrasonic measurement of the ablation zone had real discrepancy.Most of longitudinal diameters were greater than the real ones,while in large ablation lesions,vertical diameters were often less than the real ones.Under optical microscope,no change could be found in shape and structure of the cells in ablation zone.Conclusion The output power and performing time have impact on ablation.The high-power output increased heat production as well as reduction of heat conduction.Compared with single electrode needle,the cluster needle produced ablation zone closer to real hepatic tumor,thus has more reliable effect to small hepatocellular carcinoma with diameter around 2 cm.The ultrasond has a great significance in RFA guidance,but it could not accurately define the border of ablation zone.

Objective To explore the prognostic value of B-type natriuretic peptide (BNP) for 28-day mortality of elderly patients with non-cardiac critical ill in emergency intensive care unit (EICU). Methods A total of 70 elderly non-cardiac critically ill patients (age≥60 years) in EICU were enrolled, and the blood samples were collected to detect BNP level after the patients' admission to EICU. After 28 days, the mortality was assessed. Results Twenty-two patients (31.4 %) died during 28 days observation, whose BNP levels were significantly higher than that of the survivors [ln BNP: (6.4 ± 1.2) ng/L vs. ( 5. 1 ± 1.5 ) ng/L, P＜ 0. 05] ; BNP level had an area under the receiver operating characteristic curve of 0. 759 (95% CI: 0. 636-0. 882, P＜0.05) for predicting mortality,and the optimal cut point of BNP was 342 ng/L (sensitivity 77.3%, specificity 68.7%).Conclusions BNP level could be a predictor for 28-days mortality for elderly non-cardiac critically ill patients.

Aged ; Aged, 80 and over ; Anti-Bacterial Agents ; pharmacology ; Coal Mining ; Cross Infection ; complications ; microbiology ; Drug Therapy, Combination ; therapeutic use ; Humans ; Male ; Methicillin ; pharmacology ; Methicillin Resistance ; Microbial Sensitivity Tests ; Middle Aged ; Pneumonia ; drug therapy ; etiology ; Silicosis ; classification ; complications ; Staphylococcus aureus ; drug effects ; Treatment Outcome

Objective To evaluate the application of three-dimensional measurement and computer-aided navigation system in treatment of orbitozygomatic complex fiacture.Methods Pre-and post-operative three-dimensional measurements were taken by Mimics software to locate the zygomatic bones of 15 patients with orbitozygomatic complex ftacture to determine distance of optical foramen to zygomaticotemporal suture (On-Zm)/ zygomaticofrontal suture (On-Or)/zygomaticomaxillary suture (OnTz),horizontal angle of zygomatic arch,horizontal angle of the zygomatic process,and inferior angel of the frontal process of zygomatic bone.Preoperative design and simulation,intraoperative real time navigation and postoperative evaluation were applied using computer assisted navigation system.Results OnTz,On-Or,and On-Zm was (48.6-±4.5)mm,(42.5±2.2)mm,and (47.5±3.2)mmin the unaffected side,but was (50.4 ± 2.2) mm,(37.2 ± 1.0) mm,and (53.4 ± 3.6) mm in the affected side before operation (P ＜ 0.05).Whereas On-Tz,On-Or,and On-Zm improved to (46.4 ± 3.7) mm,(41.2 ± 1.8) mm,and (46.4 ± 2.5) mm in the affected side after operation,similar with the values in the unaffected side (P ＜ 0.05).Horizontal angle of zygomatic arch,horizontal angle of the zygomatic process,and inferior angel of the frontal process of zygomatic bone was (144.7 ±4.1)°,(132.5 ± 2.3)°,and (112.0 ± 3.4)° in the affected side,with significant differences from (150.3 ± 8.0)°,(141.1 ±4.2)°,and (114.9 ±5.1)° in the affected side before operation (P ＜0.05),but they were improved to almost the normal values (144.6 ± 4.1) o,(132.8 ± 2.0) °,and (111.9 ± 3.6) ° after operation.Satisfactory surgical outcomes,such as three dimensional symmetry and recovery of normal mouth-openingand occlusion,had been achieved.Conclusions Three-dimensional measurement is a quantitative study on the spatial displacement of orbitozygomatic complex.Combined with computer-assisted navigation system with preoperative design and simulation,intraoperative real time navigation and postoperative evaluation,three-dimensional measurement attains the overall management of orbitozygomatic complex fracture.