AIM　To study the effect of NO on dependence and tolerance of NM in the guinea pig ileum in vitro. METHODS　The segment of the guinea pig ileum were suspended in organ chambers for measuring withdrawal responses are expressed as ratio of naloxone(100 nmol·L-1)and Ach (100 nmol*L-1) contraction respenses and measuring inhibitory effects of NM for contractions evoked by electric stimulation. RESULTS　After the segment of the ileum was incubated with NM (200 nmol*L-1), NM (200 nmol·L-1) plus L-Arg (0.1 mmol·L-1) ,at 4℃ for 24 h respectively, the ratio are 0.89±0.02, 0.90±0.02, (n=6) P>0.05. The ratio of NM (200 nmol·L-1) plus NOArg (0.1 mmol·L-1) is 0.47±0.05,compared with control (n=6,P<0.01). After the segment of the ileum was incubated with NM (500 nmol·L-1), NM (500 nmol·L-1) plus L-Arg (0.1 mmol·L-1) at 37℃ for 3 h respectively,the sensitivities of the preparations for NM were reduced significantly,their concentration-response curves were shift to right (P<0.01).In the segment of the ileum incubaled with NM (500 nmol·L-1) and NG-nitro-L-Arginime ( NOArg 0.1 mmol·L-1) at 37℃ for 3 h,the sensitivities of the preparations for NM was unchange (P>0.05).CONCLUSIONS　These results suggest that NO has important role on dependence and tolerance of NM in the guinea pig ileum.

Objective To explore the value of cervical lesions screened with white acetate solution. Methods Four hundred and eighty-five patients who were suspected with cervical lesion during Janurary to March 2016 were enrolled in this study. The patients were asked about the medical history, filled the registration form, and performed routine gynecological examinations with white acetate solution, thinprep cytology test (TCT) and vaginal endoscopic biopsy. The value of white acetate solution in clinic was assessed. Results In 485 patients, 450 patients (92.78%) were pathologically diagnosed of inflammation (92.78%), 24 patients (4.95%) were diagnosed of low-grade squamous intraepithelial lesion (LSIL), 10 patients (2.06%)were diagnosed of high-grade squamous intraepithelial lesion (HSIL), and one patient (0.21%) was diagnosed of cervical cancer. The detection rate of white acetate solution and TCT were gradually increased with the increase of the degree of cervical lesions. The detection rate of white acetate solution in the inflammation was 1.33%, in LSIL was 91.67%, in HSIL was 9/10, and in cervical cancer was 1/1. The detection rate of TCT in the inflammation was 8.44%, in LSIL was 66.67%, in HSIL was 6/10, and in cervical cancer was 1/1. The sensitivity, specificity and coincidence rate of the diagnostic results with white acetate solution were 84.21%, 99.33%, 98.14%, and with TCT were 62.30%, 93.63%, 89.69%. There were significant differences (P<0.05). Conclusions Cervical lesions screened with white acetate solution is good in sensitivity and specificity, which is an effective way for screening cervical cancer.

Objective To investigate the correlation and characteristic of the functional polymorphism of the dopamine D4 receptor gene on the behavioral problems in school-age twins.Method The behavioral problems were assessed among a total of 147 twin pairs aged 6-12 years with the Achenbach Child Behavior Checklist (CBCL).The DRD4 gene polymorphism was applied for different types with polymerase chain reaction.The generalized estimating equations model was used to analyze the effect of DRD4 gene polymorphism and the interaction of DRD4 gene polymorphism with children age,gender,monozygotic/dizygotic on twins' behavioral problems.Results (1) School-age children's anxiety/depression,withdrawn,thought problems,attention problems,social problems,delinquent problems,aggressive behavior and total variance mainly were correlated with DRD4 gene polymorphism (P＜0.05),and physical discomfort might be related with DRD4 gene polymorphism (P=0.067).Except social problems,the detection rate of behavioral problems of the twins with 4/6 genotype (Gene type carrying 5 or more repeated sequences) of DRD4 gene (6.25％-21.25％) was higher than those with other genotypes (0-14.74％).(2) Withdrawal was related to children age (x2=4.348,P＜0.05),and twins aged 6-10 might lead to withdrawal.(3) The interaction of DRD4 gene polymorphism and children age had a significant effect on withdrawal (x2=4.348,P＜0.05) and physical discomfort(x2 =5.189,P＜0.05),and the elder age (11-12 years) children had a certainly protective effect on the withdrawal and physical discomfort with 4/6 genotype in twins.The detection rates were 3.54％ and 2.65％ in the younger-age (6-10 years) twins,while all 0 in the elder-age (11-12 years) for the withdrawal and the physical discomfort respectively.Conclusions The DRD4 gene polymorphism may be correlated with behavioral problems in school-age twins.The interaction of DRD4 polymorphism and children age had a significantly effect on withdrawal and physical discomfort.

0.05. The ratio of NM (200 nmol? L-l) plus NOArg (0.1 mmol. L-1 ) is 0.47 ? 0.05, compared with control (n = 6, P 0 .05). CONCLUSIONS These results suggest that NO has important role on dependence and tolerance of NM in the guinea Pig ileum.

Objective To analyze the effect on reproductive potential of salpingectomy in child-bearing period women.Methods Two hundred and forty-six tubal pregnancy patients were chosen,among whom 164 patients performed salpingectomy were classified as research group,and 82 patients retained ipsilateral tubal through conservative treatment were classified as control group.The levels of sex hormone,ovarian volume,sinus number of follicle,ovulation rate,reproductive outcome and reproductive status were compared between 2 groups.Seven patients were lost in research group,and 3 patients were lost in control group.Results One,three and six months after β-human chorionic gonadotrophin (β-hCG) put back,the serum levels of follicle stimulating hormone (FSH),luteinizing hormone (LH) in research group were significantly higher than those in control group,FSH:(10.00 ±4.82) U/L vs.(6.69 ± 2.71) U/L,(9.11 ± 3.77)U/L vs.(6.81 ± 2.80) U/L,(8.30 ± 3.49) U/L vs.(6.41 ± 2.41) U/L;LH:(8.74 ± 3.56) U/L vs.(6.10 ± 2.59)U/L,(9.42 ± 3.09) U/L vs.(5.79 ± 2.10) U/L,(7.96 ± 2.53) U/L vs.(6.50 ± 2.71) U/L,and there were statistical differences (P ＜ 0.05).One and three months after β-hCG put back,the serum levels of estradiol (E2) and anti-Mullerian hormone (AMH) in research group were significantly lower than those in control group,E2:(111.44 ± 22.24) pmol/L vs.(128.22 ± 24.01) pmol/L,(108.74 ± 21.67) pmol/L vs.(126.30 ± 23.78) pmol/L;AMH:(3.22 ± 0.85) μ g/L vs.(3.64 ± 0.87) μ g/L,(3.67 ± 0.94) μ g/L vs.(3.83 ± 1.12) μ g/L,and there were statistical differences (P ＜ 0.05).Six months after β-hCG put back,there was no statistical difference in the serum levels of E2 and AMH:(127.85 ± 24.42) pmol/L vs.(131.28 ± 25.54) pmol/L and (4.35 ± 1.34) μ g/L vs.(4.47 ± 1.76) μ g/L,P ＞ 0.05.In salpingectomy patients,the ovarian volume and the sinus number of follicle at lesion side (salpingectomy side) after treatment of 6 months were significantly lower than those in no lesion side:(8.86 ± 2.36) cm3 vs.(9.74 ± 2.31) cm3 and (5.10 ± 1.14) pieces vs.(7.26 ± 2.52) pieces,and there were statistical differences (P ＜ 0.05).After treatment of 2 years,the rate of ectopic pregnancy in control group was significantly higher than that in research group:12.66％ (10/79) vs.5.10％(8/157),and there was statistical difference (P ＜ 0.05).Especially,the patients who retained ipsilateral tubal conservative treatment had higher ectopic pregnancy rate:8.86％ (7/79) vs.0,and there was statistical difference (P ＜ 0.05).Conclusions Salpingectomy can affect the reproductive potential,but it can decrease the probability of ectopic pregnancy.Whether patients with tubal pregnancy need to be treated by salpingectomy,depends on the extent of tubal lesions and fertility desire of the patients.

Objective To improve the diagnosis rate and decrease misdiagnosis through analyzing the clinical and experimental features of neuroblastoma (NB) in children.Methods The clinical and experimental features associated with the misdiagnosis factors of 22 NB cases were analyzed retrospectively.Results Of the 22 cases,leg pain in 15 cases (68.18 ％),fever in 19 cases (86.36 ％),anemia in 20 cases (90.90 ％),abdominal pain and bloating in 15 cases (68.18 ％),exophthalmoses and bruises eyes in 4 cases (18.18 ％) and easily perspire in 20 cases (90.90 ％).Abdomen was the most common primary site founding in 16 cases (accounting for 72.72 ％),followed by mediastinum founding in 4 cases (accounting for 18.18 ％),other sites were 2 cases (9.09 ％).Laboratory results showed that anemia was the most common cause in 20 cases (90.90 ％),oligoleukocythemia in 2 cases (9.09 ％) and less in thrombocytopenia about 3 cases (13.63 ％).Elevated values were recorded in 77.77 ％ of patients for vanillylmandelic acid (VMA),86.36 ％ for ferritin (Fer),90.90 ％ for lactate dehydrogenase (LDH),and in 100.00 ％ for neuron specific enolase (NSE).20 cases were found metastasis when diagnosed,which accounted for 90.90 ％.16 cases (72.72 ％) were found tumour cells which determined in bone marrow and 20 cases (90.90 ％) were positive for CD56-FITC/CD81-PE/CD45-Percp by flow cytometry (FCM).12 (54.54 ％) of 22 NB cases were misdiagnosed for rheumatoid diseases (4 cases),dyspepsia (4 cases),leukemia (3 cases) and thrambocytopenia (1 case).In 22 cases,20 cases (90.90 ％) were positive for CT scan.16 cases (72.72 ％) were positive for abdominal B ultrasonography,and 14 cases (63.63 ％) were positive for radionuclide bone scan.Conclusion Bultrasonography and CT scan will contribute to find the primary focus of NB at early stage.VMA,bone marrow smear,biopsy and FCM detection could reduce misdiagnose rate.

A method based on QuEChERS coupled with ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was developed for the determination of seven kinds of fluorescent white agent residues in mushroom.After mixing with 10 mL of water, the sample was extracted with acidified acetonitrile, cleaned up by C18, primary secondary amine (PSA) and MgSO4.The separation of seven kinds of fluorescent white agents was performed on a C18 column with a gradient elution of acetonitrile and 0.1% acidified water as mobile phase.The target compounds were detected by electrospray ionization mass spectrometry in positive ion mode with multi reaction monitoring (MRM).Under the optimum conditions, the method had good linear relationship in the determination of the seven kinds of fluorescent white agents in a certain concentration range, with correlation coefficients greater than 0.991.Moreover, the limits of detection (S/N=3) were 0.05-0.4 μg/kg, the limits of quantitation (S/N=10) were 0.2-1.3 μg/kg, and the average recoveries for seven kinds of fluorescent white agent residues in msushroom were 70.1%-109.2%.In comparison with previous methods, the new procedure has characteristics of simple sample preparation and higher sensitivity.

Objective To explore the effect of blood circulation punching apparatus on important vital signs and thrombus of lower extremity veins in stable blood pressure and normal cardiopulmonary function patients with cerebrovascular disease and hypertension and to evaluate safety and effectiveness of the apparatus for these patients.Methods We treated 30 patients with cerebrovascular disease and hypertension by blood circulation punching apparatus for 3 days,2 times per day,30 minutes per time.We monitored vital signs of these patients 15 minutes pre-,intra-and post-treatment.The thrombus of lower extremity veins and adverse reactions were observed during the treatment.Results We compared systolic pressure,diastolic pressure,pulse and breathe of patients 15 minutes pre-,intra-and post-treatment respectively.We didn't find any significant differences between these parameters.No patient had thrombus of lower extremity veins and adverse reactions in the hospital.Conclusion The blood circulation punching apparatus is suitable for cerebrovascular and hypertension patients with stable blood pressure and normal cardiopulmonary function and can prevent thrombus of lower extremity veins effectively.

Objective To explore the association of estrogen receptor β expression with different stages and molecular subtypes of invasive breast cancer.Methods The clinicopathologic data of 446 invasive breast cancer cases was retrospectively analyzed.ERβ expression was evaluated by types and stages.Results Of all 446 invasive breast cancer cases,328 (73.5％) were ERβ positive.The ERβ positive rate was 77.9％ (240/308) and 63.8％ (88/138) in ERα + group and ERα-group,respectively.The ERβ expression in breast cancer was positively correlated with ERα (P ＜ 0.01) while it had no correlation with PR,histological grade,HER-2 and Ki-67 (P ＞ 0.05).ERβ expression was not significantly different among different age,tumor size and axillary lymph node groups(all P ＞ 0.05).A total of 418 invasive breast cancer cases were recruited for pathologic stage and NPI analysis,including 168 cases at stage Ⅰ,152 cases at stage Ⅱ and 98 cases at stage Ⅲ.ERβ expression was not significantly different among different stages of breast cancer(P =0.743).Analyzed in these 418 cases,NPI was ＜ 3.4 in 126 cases,3.4-5.4 in 207 cases and ＞ 5.4 in 85 cases.ERβ expression was not significantly different among different NPI group (P =0.644).The ERβ positive rate in Luminal A subtype,Luminal B1 subtype,Luminal B2 subtype,HER-2 subtype and TN subtype was 75.6％ (88/118),75.9％ (110/145),85.2％ (46/54),68.4％ (39/57) and 62.5％ (45/72) respectively.ERβ expression was significantly different between Luminal subtype and non-Luminal subtype (P =0.007).Conclusions ERβ was not differentially expressed among different breast cancer stages and NPI groups.ERβ was differentially expressed in different breast cancer molecular subtypes.

Objective:To investigate the clinical characteristics of children with high-risk acute lymphoblastic leukemia (ALL) receiving lasting remission after severe infection.Methods:The data of 3 children with high-risk ALL who were treated in Children's Hospital Affiliated of Zhengzhou University in 2014, 2015 and 2017 were analyzed retrospectively. The clinical and laboratory characteristics of all patients were also analyzed, and the relevant literatures were reviewed.Results:All 3 children were clinically classified as high-risk ALL with severe infection. A variety of anti-infective drugs and blood products were used in the treatment, and all achieved lasting remission.Conclusions:Children with high-risk ALL after severe infection can acquire lasting remission, which may be related with the production of infection stimulating inflammatory factors and cytokines to activate certain immune pathways, or various kinds of antibiotics, blood products participating in the immune regulation to make the body regain the immune surveillance function of the tumor cells.