It is found that Virtual experiment(VE)can not only improve the experimental condition,enrich the experimental content,but also help to foster the innovation ability of the students. To bring the teaching contribution of VE into full play,it is important to note that VE should be combined with actual experiment and be introduced step by step. Meanwhile,the teach-ing staff should also acquire more learning and further technical skills.

35u/ml as positive limit, the sensitivity of CA125 for diagnosis of lung cancer is 53.6%. There was no significant difference between stage Ⅰ,Ⅱ lung cancer and benign, healthy groups, but the level of serum CA125 of stageⅢ?Ⅳ was higher than control groups. Thirty eight of forty lung cancer patients with higher CA125 level dropped to normal after therapy. Conclusions:Serum CA125 has high diagnosis value in lung cancer. It can be a vital index in lung cancer staging and prognosis.

Objective To explore a new method of comparing the references images first to enhance the precision of the central point of the radiation treatment planning(RTP), try to establish a reference standard for this method in the nasopharyngeal cancer(NPC)and carcinoma of utercin cervix in the work of position verification. Methods For 50 RTPs of NPC and 20 RTPs of carcinoma of utercin cervix, the reference-CT-images in set-up and in position verification were compared, and to measure the difference between the two images. Then, in the same way, compare and measure the difference in the central-pointimages. Results For NPC, there was over 90% RTPs in which every difference measured was less than 2 mm;for carcinoma of utercin cervix, over 80% RTPs meet the criterion:the value of △MU1 ' or △MU2' was less than 5 mm and the others are less than 3 mm. Conclusions By comparing the references-CT-images in set-up and in position verification, the precision of the central point of the RTP is enhanced. The marks on the skin become more credible. So, it is feasible to perform the criterions in the work of position verification:for NPC every difference measured is less than 2 mm;for carcinoma of utercin cervix the value of △MU1 ' or △MU2 ' is less than 5 mm and the others are less than 3 mm.

The aim of laboratory evaluation of basic education is to improve the quality of experimental teaching,which demands thorough reforms of many aspects,including the ranks of teachers,administration,content,methods and instrument of teaching. This article summarizes the experience and achievement of Functional Laboratory Centre,Central South University during under- graduate teaching evaluation by the Ministry of Education in 2006.

Objective To observe the clinical efficacy of infrared thermal therapy against pseudomonas ae-ruginosa infection on deep partial-thickness burn wound. Methods Forty-three patients in our hospital with main-ly deep partial-thickness burn wound from January 2015 to October 2016 were randomly enrolled to the treatment group(TG,treated with sulfadiazine silver + infrared thermal therapy)and the control group(CG,treated with sulfadiazine silver only). Scores of wound exudation,positive rate of pseudomonas aeruginosa on wound,wound healing rate,wound healing time and overall evaluation of wound healing on the day of 0,3,7,14,21,28 after treatment were conventionally recorded. Adverse effects in TG and CG were also observed. Results (1)Age,sex and burn surface area of patients were found no statistically significant difference between the two groups(P>0.05). (2)On the day of 3,7 and 14,wound exudation score of TG was significantly lower than that of CG(P<0.05);On the day of0,21 and 28,wound exudation score of the two groups were almost same.(3)Positive rate of pseudomonas aeruginosa between the two groups on the day of 7,14 and 21,TG was significantly lower than CG(P < 0.05). (4)Wound healing rate of TG on the day of 7,14 and 21 was higher than CG,which was statistically significant difference in the 2 groups(P<0.05);Wound healing time of TG patients[(21.1 ± 6.5)day]was significantly shorter than that of CG patients[(26.2 ± 6.5)day](P<0.05).(5)Overall evaluation of wound healing of TG was better than that of CG on the day 14 and 21(P<0.05). Conclusions Infrared thermal therapy could reduce the secretion of deep partial-thickness burn wound and effectively control pseudomonas aeruginosa infection. Furthermore,infrared thermal therapy finally improved wound healing rate and shortenedwound healing time of burn wound.

Objective To evaluate the value of systemic ultrasound examination in prenatal diagnosis of fetus skeletal system anomaly combined with chromosomal abnormalities. Methods In 12 146 patients examined by systemic ultrasound in Sichuan Provincial People's Hospital from 2006 to 2013, 21 fetus with skeletal system abnormalities and chromosomal abnormalities were included in the study. And the correlation between skeletal system abnormalities and chromosomal abnormalities in fetus was evaluated. Results This study involves 21 cases of abnormal fetal skeletal system combined with chromosomal abnormalities. Among them, there were 5 cases of trisomy-21, 11 cases of trisomy-18, 3 cases of trisomy-13, 1 case of [46, XYt (6, 9)], and 1 case of (46, XY, 6 q-). In 19 cases, other system malformations were found, including nervous system abnormalities, facial deformity, cardiac structural abnormalities and intrauterine retardation. In the rest 2 cases, skeletal system abnormalities were the only structural malformation detected on prenatal ultrasound examination. Conclusion Systemic ultrasound can't only detect fetal skeletal system abnormalities but also provide clues for specific chromosomal abnormalities, which was useful in optimizing prenatal diagnosis.

Objective To detect the expression levels of renal tissue M-type phospholipase A2 receptor 1(PLA2R1) antigen and its antibody in the patients with membranous nephropathy(MN).Methods Fifty-eight cases of biopsy-proved idiopathic membranous nephropathy(IMN),fifteen cases of hepatitis B-associated membranous nephropathy(HBV-MN) and seventeen cases of V type lupus nephritis(V-LN) were selected.Renal tissue PLA2R1 antigen was detected by indirect immunofluorescence and colocaliazed with IgG4.Serum anti-PLA2R1 antibody was simultaneously examined.The expression difference of PLA2R1 antigen and antiPLA2R1 antibody in MN was analyzed.And the differences of clinical data were analyzed between PLA2R1 positive and negative patients.Results The PLA2R1 antibody was not found in the renal tissue and serum of the patients with LN and HBV-MN;PLA2R1 antigen was found in 81.03％ of IMN patients,and its antibody was found in serum of 70.69％ of IMN patients.PLA2R1 antigen and IgG4 co-localization all deposited along glomerular capillary loop presenting as fine granules.The 24 h urine protein level in the patients with PLA2R1 antigen deposition in renal tissues was higher than that in the patients without PLA2R1 deposition (P＜0.05),moreover serum albumin level was lower than that in the patients without PLA2R1 deposition(P＜0.05).Conclusion The sensitivity and specificity of renal tissue PLA2R1 antigen in the diagnosis of IMN are higher.The expression of PLA2R1 antigen in renal tissue by biopsy is significantly correlated with the clinical severity.

Objective To investigate the effects of motilin on the voltage dependent potassium channel and L-type calcium channel currents in rat proximal colon smooth muscle cells (PCSM) and to explore its mechanism in increasing colonic motility.Methods PCSM were isolated by collagenase.The voltage dependent potassium channel transit outward current (IKA ) and delayed rectifier current (IKdr) and L-type calcium currents (ICa(L)) were measured by whole cell patch clamp technique.Groups were analyzed by paired t-test.Results There was no significant effect of motilin on IKA and IKdr.L-type calcium channel was dose-dependently activated by motilin from 0.5 × 105 mmol/L to 10.0 ×10-5 mmol/L.At 6 × 10-5 mmol/L motilin and under - 10,0 and 10 mV stimulating voltage,maximum current density increased by 154.61％,62.69％ and 21.02％ respectively and activation kinetics curve obviously left shifted.Half activation voltage decreased from (2.740±1.211) mV prior administration to ( - 25.290 ± 0.614) mV (t =8.534,P =0.007 ) and there was no significant difference in slope factor. Conclusions Motilin increases colonic smooth muscle contraction by promoting calcium influx. However the frequency of colonic smooth muscle contraction could not change with frequency of equilibrium potential and action potential of colonic smooth muscle.

【Objective】To explore the therapeutic effect of TCM syndrome differentiation and treatment for immunoglobulin A(IgA) nephropathy.【Methods】The selected 123 patients with IgA nephropathy were divided into two groups(in the proportion of 3∶1) by number randomization.Group A(n=86) was given Tripterygium Glycosides tablets and differential treatment according to syndrome patterns,and Group B(n=37) was given routine western medicine including anti-inflammation drugs,drugs for controlling blood pressure and glucocorticoid hormone.The two groups received a 3-month treatment course and received one more course according to individual cases.The total therapeutic effect,effect for TCM syndrome patterns,and toxic and side effects were observed.The changes of TCM syndrome scoring were compared before and after treatment.【Results】In group A,symptoms were completely relieved in 29,markedly relieved in 30,relieved in 15 and un-relieved in 12 patients,the total effective rate being 86.05%,while respectively in 4,5,10 and 18 of patients in group B,the total effective rate being 51.35%.The total effect was better in group A than that in group B(P0.05).The improvement on TCM syndrome scoring in group A was superior to that in group B(P

Aim To investigate the effects of emodin on the contraction of gallbladder smooth muscle(GBSM)and the L-type calcium current in GBSM cells.Methods Gallbladder muscle strips were obtained from adult guinea pigs and the resting tension was recorded.Gallbladder smooth muscle cells were isolated by enzymatic digestion,and calcium current was recorded by the whole-cell patch clamp method.Results Emodin-induced contraction of GBSM was significantly attenuated by pretreatment with nifedipine.Emodin increased the L-type calcium current in a dose-dependent manner.When 10 ?mol?L-1 emodin was applied to GBSM cells,the amplitude of L-type calcium current at +10 mV was enhanced by(45.2?2.26)%.In the presence of PKC inhibitor,staurosporine,emodin did not significantly affect the calcium current.Conclusion Emodin enhances L-type calcium current via PKC-dependent pathway and promotes gallbladder contraction.