Neoplastic stem cell (NSC),cells with stem cell properties,which out of control of proliferation properties can be formed cancer.It plays an important role in the neoplasm metastasis,and its mechanism throughout the tumorigenesis,development and prognosis.

Purpose To detect and isolate cancer stem cells ( CSC) in fresh specimens of primary and metastatic carcinoma tissues from 10 cases of colorectal cancer to study the biological functions and mechanisms of migrating cancer stem cells. Methods Suspen-sions of primary and metastatic colorectal cancer cells were labeled with antibodies CD133-PE and CD44-FITC, and then flow cytometry was used to detect and isolate the CD133-PE-positive and CD44-FITC-positive cells. Results There were certain percentages of CD133-positive and CD44-positive cells present in primary and metastatic colorectal cancer and the proportion of CSC in metastatic colorectal cancer was higher than that in primary cancer tissue (P<0.05). Conclusions There are CSC in both primary and meta-static colorectal cancer and the proportion of CSC in metastatic colorectal cancer is significantly higher than that in primary cancer tis-sue, suggesting that CSC play an important role in the metastasis of colorectal cancer.

AIM:To discuss the application value of retro-mode imaging by F-10 confocal scanning laser ophthalmoscope (cSLO) for detecting drusen in patients with age-related macular degeneration (AMD).METHODS:This was a retrospective case study.During the period of October 2015 to December 2016, 67 patients with unilateral AMD (67 affected eyes and 67 fellow eyes) were included in this study.All patients underwent color fundus photography, optical coherence tomography (OCT) and retro-mode imaging by F-10 cSLO.The features of drusen by color fundus photography, OCT and retro-mode imaging were comparatively observed in the affected eyes of patients with unilateral AMD.Positive numbers of drusen in the fellow eyes of patients with unilateral AMD detected by color fundus photography, OCT and retro-mode imaging were calculated and compared.RESULTS:Retro-mode imaging by F-10 cSLO gave easier to identify images of drusen than color fundus photography and OCT in the affected eyes of patients with unilateral AMD.In the fellow eyes of 67 patients with unilateral AMD, retro-mode imaging showed drusen in 56 cases(84%), color funds photography showed drusen in 36 cases(54%), OCT showed drusen in 48 cases(72%), the difference was statistically significant(χ2=14.31, P<0.05).The positive numbers of drusen detected by retro-mode imaging were significantly higher than color fundus photography, the difference was statistically significant(χ2=13.87, P′<0.0125).There was no statistically significant difference in the positive numbers of drusen detected by retro-mode imaging and OCT(χ2=2.75, P′>0.0125).CONCLUSION:Retro-mode imaging by F-10 cSLO provides a non-invasive technique and should be useful for detecting and monitoring drusen in AMD.

Objective To explore the impact of prenatal diagnosis on the early treatment and short and medium term outcome of neonatal pulmonary atresia with intact ventricle septum (PA/IVS) or critical pulmonary stenosis with intact ventricle septum (CPS/IVS). Methods According to the case-control method, twenty-eight neonates with (PA/IVS) or (CPS/IVS) who had percutaneous pulmonary balloon valvuloplasty (PBPV) surgery indications, were divided into the prenatal diagnosis group (n?=?15) and the postnatal diagnosis group (n?=?13). The prenatal diagnosis group was diagnosed in fetal period and the intervention program was since developed . The postnatal diagnosis group was referred from other hospitals, and the intervention program was developed after conifrmation of the diagnosis. All the neonates accepted the PBPV surgery after the hemodynamic parameters stable. All neonates were followed-up at 1 month, 3 months, 6 months, 1 year, and 2 years after surgery. Clinical situations, echocardiography results, and interventional cardiology measurements were compared between two groups. Result The average age and weigh was 7.53?±?3.18 days and 3102.32?±?708.40 g respectively at the time of PBPV surgery in 28 neonates. Among them, 9 neonates were PA/IVS and 19 neonates were CPS/IVS. The mean follow-up time was 18.8?±?5.22 months and there were no death. The ages at admission and at the ifrst treatment were signiifcantly younger in the prenatal diagnosis group than those in the postnatal diagnosis group (P??0.05). Conclusion Prenatal diagnosis is helpful for the early intervention in neonates with PA/IVS and CPS/IVS, and can reduce the complications after surgery.

Objective To evaluate the predictive accuracy of several risk-assessment strategies to predict the risk of significant neonatal hyperbilirubinemia, and to establish the best prediction model.Methods The transcutancous bilirubin (TcB) levels of 4907 term and near-team infants were measured.Trace blood bilirubin levels of the infants whose TcB levels ≥250 μmol/L were detected. Clinical data of newborns and their mothers were collected and were analyzed with Logistic regression model to investigate its correlation with signifrcant hyperbilirubinemia. Clinical high risk factors of significant neonatal hyperbilirubinemia were determined. Accuracy of three prediction methods for significant hyperbilirubinemia was compared by receiver operating characteristic (ROC) curve. The three methods included: whether predischarge bilirubin level (within 72 hours after birth) expressed in risk zone on an hour-specific bilirubin nomogram; clinical risk factors other than predischarge bilirubin level; and combination of the predischarge bilirubin risk zone and other clinical risk factors. Results Two hundred and eighty-six newborns (5.8%) were found with significant hyperbilirubinemia. The risk factors of significant neonatal hyperbilirubinemia were divided into three groups according to OR: (1) Major risk factors:predischarge (within 72 hours after birth) bilirubin level in the high risk-zone (OR=96. 39, 95% CI:53.32-174.27, P = 0. 000), large cephalohematoma (OR = 36.45, 95% CI: 10. 02-132.56,P=0. 0076), gestational age 35-36+6 weeks (OR= 30. 72, 95% CI 14.47-65.23, P=0. 0001) and exclusive breast feeding and weight loss was ＞9% of birth-weight (OR=22.44, 95% CI: 4.42-114. 03, P=0. 0016). (2) Minor risk factors: gestational age 37-37+6 weeks (OR=3.26, 95% CI:1.92-5. 55, P=0. 0232), predischarge bilirubin level in P76-P95(OR=13. 64, 95% CI: 8. 10-22.97,P=0. 0001) and bruising (OR = 2.32, 95% CI: 1.14-4.71, P = 0. 0497). (3)Protective factors (those factors associated with decreased risk of hyperbilirubinemia): predischarge bilirubin level in low-risk zone (≤P40) (OR=0. 00), gestational age ≥40 weeks (OR=0.21, 95% CI: 0.09-0.44,P=0. 0402) and mixed breeding (OR=0. 75, 95% CI: 0. 58-0.95, P=0.0059). The area under the ROC curve of predischarge bilirubin level was 0. 8687 and 0. 7375 for clinical risk factors other than predischarge bilirubin level. The area under the ROC curve of a combination of the predischarge bilirubin risk zone and additional clinical risk factors was 0. 9367. Conclusions The risk of significant neonatal hyperbilirubinemia could be simply and accurately predicted by infant's predischarge bilirubin level and the combination of predischarge bilirubin level, and clinical risk factors might improve the accuracy of prediction significantly.

Objective To study the damage to striatum in patients perorally addicted to compound codeine phosphate solution by using the brain dopamine transporter SPECT imaging. Methods Patients p erorally addicted to compound codeine phosphate solution ( n = 29 ) and addicted to heroin ( n = 27 ), as well as healthy volunteers (n = 31 ) were included in the study. Each of them underwent dopamine transporter (DAT) SPECT imaging with 99Tcm-2β-[N, N'-bis-( 2- mercaptoethyl ) ethylenediamino] methyl, 3β-(4-chlorophenyl)tropane (99Tcm-TRODAT-1). The striatum volume (V, cm3), mass (m, g) and radiactivity ratio (Ra) of striatum to whole brain were calculated using physio-mathematical modeling method.R esults Bilateral striatum of healthy volunteers showed typical "panda eyes" pattern and the distribution of DAT was uniform and symmetrical. Bilateral striatum of patients addicted to compound codeine phosphate showed impaired tracer uptake, similar to those addicted to heroin. The V, m and Ra of bilateral striatum of patients addicted to compound codeine phosphate were (23.68 ±4.94) cm3, (24.87 ±5.19) g and (5.01 ±0. 88 ) %, respectively, which were significantly lower than those of healthy controls: ( 35.39 ± 4.42 ) cm3,(37.16 ±4.64) g and (7.93 ±0.86)% (t = -9.69, -9.69, - 13.01, all P =0.000), but significantly higher than those addicted to heroin: ( 18.87 ± 4.66 ) cm3, ( 19.81 ± 4.90 ) g and (4.26 ± 1.02 ) % ( t =3.74, 3.74, 2.96, P = 0.000, 0.000, 0.005 ). Conclusion Long-term peroral intake of compound codeine phosphate solution may damage the function of cerebral striatum, which is someway similar to though less severe than, the impairment caused by heroin.

Objective To evaluate the clinical value of 18F-FDG PET-CT in detecting or diagnosing the recurrence and metastasis of colorectal cancer in the postoperative patients with rising CEA or CA19-9 during the follow-up.Methods 87 colorectal cancer patients were entered in the trial,all were postoperative,and during the follow-up were rising CEA or CA19-9 found, and then had the whole body 18F-FDG PET-CT examination.The final diagnosis of all patients were based on pathology results of re-operation,colonoscoply,a variety of imaging examination or clinical follow-up. Results For the diagnosis of recurrence or metastasis of postoperative colorectal cancer with rising CEA or CA19-9,PET-CT sensitivity was 91.0%(71/78),specificity 66.7%(6/9),accuracy 88.5%(77/87).Among the 61 patients who have recently (in 3 months) had conventional chest,abdominal and pelvic imaging examination (ultrasound,CT and MRI),32 patients PET-CT found the lesions that the conventional imaging did not found.The treatment programs of 21 patients have been changed,correction rate was 34.4%(2 1/61). Conclusion The 18F-FDG PET-CT imaging had a significant value in the diagnosis of recurrence and metastasis and restaging in the postoperative colorectal cancer with rising CEA or CA19-9 during the follow-up.

Objective To evaluate biodistribution and pharmacokinetics pattern of ~(131)I-labeled rch24which is the region-grafted (humanized) anti-carcinoembryonic antigen (CEA) monoclonal antibody in nude mice. Methods Nude mice bearing cancer xenografts received intravenous injections of ~(131)I- rch24, then blood, plasma, heart, liver, spleen, lung, kidney, tumor and other tissues were taken at different time point for determination the concentration of radioactivity and calculate the T/NT value. Nude mice were packeted randomly to four group of high, medium, low dose and continuous administration, blood drug concentration was detected by ELISA method at the different intervals. Then, draw the concentration-time curve and calculate the pharmacokinetics paramete. Results After administration, radioactivity of the tumour was significantly enhanced whereas radioactivity of normal tissues decreased gradually. For single administration, at the dose of low to medium, pharmacokinetics pattern was linearity -kinetics whereas for high dose group,pharmacokinetics paramete shown some behavior of non-linearity-kinetics. Conclusion Our results suggest that the ~(131)I-labeled region-grafted (humanized) anti-CEA monoclonal antibody rch24 exhibit a considerable targeting activity so as to ~(131)I radioisotopes can be concentrated specifically in tumor. The pharmacokinetics pattern of this medicine was different at different dose.

Objective To explore and study the effect of bundles on prevention and treatment of oral mucositis caused by chemoradiotherapy for patients with nasopharyngeal carcinoma. Methods A total of 40 patients who met the inclusion criteria from June 2014 to December 2014 were selected as the control group, who adopted routine nursing measures, 40 patients who met the inclusion criteria from January 2015 to June 2015 were assigned to the observation group. Bundles on prevention and treatment of oral mucositis caused by chemoradiotherapy for patients with nasopharyngeal carcinoma were edited using a series of evidence-based approach, and it was used to manage the patients of observation group. Results While doing 21, 28, 33 friction of radiotherapy, the oral mucositis level of 0 degree, Ⅰ degree,Ⅱ degree,Ⅲ degree and Ⅳ degree of the observation group were 8, 25, 7, 0, 0 cases;3, 11, 24, 2, 0 cases;0, 19, 13, 6, 2 cases respectively, which were lower than the control group whose degrees were 0, 31, 6, 3, 0 cases;0, 18, 11, 10, 1 cases;0, 9, 17, 9, 5 cases. The difference between the two groups was statistically significant (Z=-4.440,-3.441,-2.232, all P < 0.05 or 0.01). While doing 21, 28, 33 friction of adiotherapy, the throat pain level of 0 degree, Ⅰ degree,Ⅱ degree,Ⅲ degree of observation group were 4, 31, 5, 0; 2, 22, 14, 2; 0, 26, 12, 2 cases respectively, which were lower than the control group whose degrees were 1, 22, 16, 1 cases; 0, 10, 23, 7 cases; 0, 10, 17, 13 cases. The difference between the two groups was statistically significant (Z=-3.137,-3.326,-3.518, all P<0.01). While doing 28, 33 friction of radiotherapy, the Self Rating Anxiety Scale of the observation group scored 56.76 ± 3.19, 58.72 ± 5.41, which were lower than 60.58 ± 2.46, 63.42 ± 4.97 in the control group. The difference between the two groups was statistically significant (t=11.746, 10.561, all P <0.01). While doing 33 friction of radiotherapy, the self rating anxiety scale of the observation group was 60.56 ± 3.73, which was lower than 63.43 ± 4.77 in the control group. The difference between the two groups was statistically significant (t=-4.983, P<0.01). The following entries:swallow, sensation, eating in public, dry mouth, sticky saliva, feel sick of the quality of life questionnaire of the observation group were higher than the control group while doing 33 friction of radiotherapy. All the differences were statistically significant (t=-3.873-5.130, P<0.05 or 0.01). Conclusions The bundles could effectively prevent and treat oral mucositis caused by chemoradiotherapy for patients with nasopharyngeal carcinoma. It could release the throat pain, anxiety and depression of the patients, as well as improve the quality of life to some extent.

The expressions of StAR (steroidogenic acute regulatory protein) mRNA in testes from 7,14,23 and 37 day-old piglets were studied by tissue in situ hybridization. The results indicated that in the testes of piglets, StARmRNA was expressed in Leydig cells of pig testes. The expression level of StARmRNA was lower in 7 days piglets but higher in 14,23,37 days. The results indicated that StAR gene played an important role in steroid biosynthesis.