Amnion ; surgery ; transplantation ; Animals ; Humans ; Neurons ; transplantation ; Spinal Cord ; transplantation ; Spinal Cord Injuries ; surgery ; Tissue Transplantation ; methods

ObjectiveThis paper aims to probe into the effect of working and studying combined teaching reform of chnical medicine major.MethodsTwo classes containing 46 students respectively were selected at random as observation group and control group,from the six classes of Grade Two majoring in clinical medicine.The two groups of students were trained by adopting working and studying combined teaching model and traditional teaching model respectively,after which they were evaluated in terms of clinical theory,practical skills and operations,and exercitation achievement.ResultsThe observation group does better in practical skills and exercitation achievement than the control group,while they have no difference in clinical theory.ConclusionWorking and studying combined teaching model can improve students' clinical analytical ability,strengthen their awareness of medical morals,and help them achieve more in exercitation.

Adult ; Female ; Health Knowledge, Attitudes, Practice ; Health Promotion ; Humans ; Lead ; Male ; Middle Aged ; Occupational Exposure ; prevention & control ; Occupational Health ; Occupational Health Services ; Stearates ; Young Adult

Objective:To investigate the clinical application value of argon-helium knife cryoablation combined with radioactive seed implantation in the treatment of non-small cell lung cancer(NSCLC).Methods:A total of 117 patients with NSCLC admitted to Oncology Department of Fifth Affiliated Hospital of Zhengzhou University from January 2015 to January 2017 were included in our study.And they were divided into the combination group(n=63)treated with CT guided argon-helium knife cryoablation combined with radioactive 125I seeds implantation and the control group(n=54)treated only with argon-helium knife ablation.The changes of blood routine indexes, tumor markers, tumor ablation target volume and CT value were observed before and 1, 3, 6 months after treatment.Adverse reactions during treatment and the evaluation results of efficacy were compared between the two groups.Patients were followed up for 24 months to observe the recurrence and survival rates between the two groups. Results:In the combination group, seeds of(12.49±4.91)were implanted, and the X-ray exposure was(123.16±42.75)Gy.There was no significant difference in general clinical data between the two groups before treatment( P>0.05). At 1, 3 and 6 months after treatment, as compared with control group the combination group showed the significantly decreased platelet count( t=3.154, 3.586, 2.233, P=0.027、0.019、0.034), while, there was no significant difference in white blood cell count, red blood cell count and hemoglobin level between the two groups(all P>0.05). The levels of carcinoembryonic antigen(CEA), neuron-specific enolase(NSE)and tumor volume were significantly lower in combination group than in control group at 3 and 6 months after treatment( t3=3.142, 2.926 and 4.281, t6=4.094, 5.382 and 4.535, all P<0.05), showing significant improvements of illness.While, the above levels showed no significant differences at 1 month after treatment between two groups( t=1.065, 1.037, P=0.197, 0.255). At each monitoring time, the CT value of tumor target area showed a steady downward trend( P<0.05). During the treatment, the incidence of thrombocytopenia was higher in the combination group than in the control group(47.6% or 30/63 vs.24.1% or 13/54, χ2=6.935, P=0.008), while there were no significant differences in the incidence of postoperative fever, pneumothorax, myoglobinuria, pain, bleeding and nausea and vomiting between the two groups(all P>0.05). After 6 months of treatment, the remission rate was higher in the combination group(73.0% or 46/63)than in the control group(48.1% or 26/54). The survival time and relapse-free time of the combination group were longer than those of the control group[(21.81±4.31)months vs.(18.93±5.94)months, (20.48±5.76)months vs.(16.93±7.14)months, Log Rank χ2=8.229 and 9.656, P=0.004 and 0.002)]. Conclusions:Argon-helium knife Cryoablation combined with radioactive seed implantation can effectively control the local progression of NSCLC, reduce the risk of tumor recurrence, and has high safety.

AIM: To activate hepatic stellate cells (HSC) in vitro in precision-cut liver slices (PCLS) stimulated by acetaldehyde for studying and screening anti-fibrotic drugs. METHODS: PCLS were prepared by the vibratome, and incubated with 700 ?m?L~-1 acetaldehyde for 0, 2, 4 and 6 h. The medium and homogenate were retained to determine glutathione S-transferase (GST) activity, lactate dehydrogenase (LDH) leakage and hydroxyproline (Hyp) content. PCLS were prepared for paraffin sections. The expression of ?-smooth muscle actin (?-SMA) was evaluated by immunohistochemistry, and the result was analyzed with image analysis software. RESULTS: The leakages of GST and LDH were increased significantly compared with those in 0 h group (P

From the perspective of portable monitoring devices,we use an analog front-end AFE4490 design a module of Non-invasive blood oxygen measurement, used to collect human pulse wave signal and peak (valley) value detection and then use the principles of non-invasive oximetry calculated oxygen saturation (SPO2). This design of noninvasive oximetry module has the characteristics of small size, low power consumption, and the results of test show that the measurement of oxygen saturation are correct.
Heart Rate ; Humans ; Oximetry ; instrumentation ; methods ; Oxygen ; blood

OBJECTIVETo explore the clinical effects of minor bone anchors and palmaris longus tendon graft in treating chronic mallet fingers deformity.

METHODSFrom January 2008 to June 2013, 26 patients with chronic mallet fingers deformity were treated with minor bone anchors and palmaris longus tendon graft. There were 18 males and 8 females, aged from 18 to 52 years old with an average of (32.0±1.3) years. Among them, 8 cases caused by machine injury, 6 cases by fall injury, 6 cases by sprain from fight, 4 cases by tendon spontaneous rupture, 2 cases by knife trauma. There was no tendon attachment of extensor tendon check in 16 cases, and with 0.3 to 0.5 cm tendon attachment in 10 cases. All patients had the flexion deformity and the disability of dorsiflexion activity. During operation, the distal interphalangeal joint was fixed in 10° to 20° dorsiflexion by a Kirshner wire, the minor bone anchor was used to reconstruct the extensor tendon insertion, the palmaris longus tendon slice was transplanted the decayed area of extensor tendon insertion. Four weeks postoperatively, the Kirshner wire was removed and the plaster external fixation was used, and the patient began function exercises. Postoperative complications were observed and fingers functions were assessed according to Dargan standard.

RESULTSThe patients were followed up from 6 to 14 months with an average of (5.0±0.3) months. Wound superficial infection occurred in 2 cases, the skin pressure ulcer in 2 cases, joint activities disability in 1 case; these symptoms got improvement after symptomatic treatment. Traumatic arthritis occurred in 2 cases, 1 case was improved after treatment, and 1 case had chronic pain for a long time. No internal fixation loosening or breakage and tendon rupture were found. According to Dargan standard to evaluate the finger function, 17 cases got excellent results, 8 good, and 1 poor.

CONCLUSIONIt is an effective way to treat the chronic mallet finger deformity using minor bone anchors and palmaris longus tendon graft, and the method has advantages of reliable fixation, easy operation, satisfactory effect and less complication.

Adolescent ; Adult ; Female ; Finger Injuries ; surgery ; Fracture Fixation, Internal ; Hand Deformities, Acquired ; surgery ; Humans ; Male ; Middle Aged ; Suture Anchors ; Tendon Transfer

Objective To examine an in vivo method for the differentiation of induced pluripotent stem cells (iPSCs) into thymic epithelial cells (TECs) in mice. Methods Green fluorescent protein-expressing iPS cells, derived from C57BL/6 mice, were injected into blastocysts from ICR mice. Chimeric blastocysts were then transferred into uteri of E2.5 pseudopregnant mice. Chimeric mouse could be identified by coat color 10 days after birth. The chimeric thymus was transplanted under the renal capsule of BALB/c nude mice. The spleen was cut out from the thymus-transplanted nude mice and the cells were dispersed and analyzed by a flow cytometer 4 weeks after transplantation. Results Chimeras were born 17 days after embryo transfer and 13 live-born chimeras were obtained. The contribution of iPSC-derived cells in the chimeras ranged from 5% to at most 90%. Typical thymic epithelium structure consisted of green fluorescent protein-expressing cells in chimera. The iPSCs-derived thymic epithelial cells could support the generation of new T cells. Conclusion The results indicate that mouse iPS cells can differentiate in vivo towards normally functioning TECs.

Objcetive: To investigate the effect of resveratrol (RES)combined with cisplatin (DDP)on the cholangiocarcinoma cell line FRH-0201 in vitro. Methods: FRH-0201 cells were exposed to different concentrations of RES or (and)DDP. Cell morphological changes were observed by light and fluorescence microscopy. Inhibition of cell proliferation was measured by MTT and colony-forming assay. And the flow cytometry were performed to detect the cell apoptosis rate and cell cycle. Results: Resveratrol inhibited the proliferation of FRH-0201 cells in a time-and dose-dependent manner in the concentration of 5～320 ?mol/L and the IC50 values after the exposure of 24, 48, and 72 h were 55.35, 32.84, and 28.01 ?mol/L respectively. RES and DDP had synergetic effect in the inhibition of FRH-0201 cells. Conclusion: RES can inhibit the growth of FRH-0201 cells and has the synergetic effect with DDP.

Cytomegalovirus Infections ; complications ; Female ; Humans ; Infant, Newborn ; Male ; Skin Diseases ; etiology