AIM: Studying the relation between telomerase activity and chronic myelocytic leukeed(CML) courses by detect telomerase activity(TMA) Of mononuclear cells of bone marrow samples in different CML phases. METHOD: Using telomerase PCR - ELISA method. RESULTS: Telomelase activity of nounal bone marrow is 9. 85 ?0.68, CML chronic phase is 24.48 ?12. 73 which is significantly higher than that of normal bone marrow(P 0.05), at remisson TMA is 18. 12? 6.27 which is shil higher than normal group (P

Objective To investigate the expression and clinical significance of MUC1,MUC2,MUC4 and MUC5AC in pancreatic ductal adenocarcinoma(PDA).Methods To analyze the expression profiles of MUC1,MUC2,MUC4 and MUC5AC in PDA(n=26),chronic pancreatitis(CP,n=4),normal pancreas(n=16)and intraductal papillary-mucinous neoplasm(IPMN)(n=2),solid-pseudo-papillary tumor of pancreas(SPT)(n=4),serous cystic neoplasm(SCN)(n=1)using immunohistochemistry.Results Positive staining with MUC1 Was exclusively found in normal pancreas and CP tissues(100%);the expression of MUC1,MUC4 and MUCSAC in PDA was 100%,88.5%(23/26)and 76.9%(20/26)in PDA tissue;MUC2 and MUC5AC were expressed in 2 samples of IPMN;none of the four mucins were expressed in Sfrr and SCN.There was no association between the expression of MUC4,MUC5AC and the clinicopathologic parameters in PDA(P＞0.05).Conclusions Multiple mucins were expressed in PDA.Measurement of the mucin profile including all 4 mueins(MUC1,MUC2,MUC4,and MUC5AC)may be helpful in the diagnosis and differential diagnosis of PDA.

OBJECTIVE: To explore the found ways and first diagnosis age of children with large vestibular aqueduct, and their relations with hearing loss. METHOD: Medical histories of 122 cases of children diagnosed with large vestibular aqueduct by HRCT or MRI had been collected from January 2009 to April 2014 in our hospital children's hearing diagnosis center clinic. Found ways comprise of accepting universal newborn hearing screening (UNHS) group and unaccepting UNHS group. Accepting UNHS children were divided into two ears unpassing group, single ear unpassing group and passing group. The patients in unaccepting UNHS group were divided into not sensitive to sounds, speech stunting, sudden hearing loss, and other group. Analysis the relationship between the found ways and first diagnosis age and their relations with hearing loss. RESULT: There are 84 cases (68.85%) accepting UNHS, the average age of first diagnosis was (17.24 ± 17.08) months; 37 cases (31.15%) are not accepting UNHS. The average age of first diagnosis was (30.92 ± 18.21) months. The average first diagnosis age of accepting UNHS group was more earlier than the unaccepting UNHS group. The difference was statistically signif- icant (P < 0.01). There were 57 cases (67.85%) whose two ears not pass UNHS; 15 cases (17.86%) single ear not pass; namely the referral rate was 85.71%; 12 cases (14.29%) pass the test. The first diagnosis age of passing UNHS group was more later than two ears unpassing group (P < 0.001). In the unaccepting UNHS group, the average first diagnosis age of not sensitive to sounds group (19.69 ± 11.16 months) was more earlier than words dysplasia group (37.13 ± 15.62 months) and sudden hearing loss group (47.40 ± 24.70 months) (P < 0.01). The difference in the degree of hearing loss between accepting UNHS and unaccepting UNHS group had no statistical significance (P > 0.05). In unaccepting UNHS group ,the average first diagnosis age of the mild-to-moderate hearing loss group was later than the very severe hearing loss group (P < 0.01). CONCLUSION Most of large vestibular aqueduct children can be found and receive diagnosis early by UNHS. But part of these patients with late-onset or progressive hearing loss, especially these with mild-to-moderate hearing loss cannot be found early, which should arouse our attention.
Child, Preschool ; Deafness ; Early Diagnosis ; Hearing Loss ; etiology ; Hearing Loss, Sudden ; Hearing Tests ; Humans ; Infant ; Infant, Newborn ; Neonatal Screening ; Vestibular Aqueduct ; abnormalities

OBJECTIVEThe aim of this study was to evaluate the number of central cervical lymph node metastasis (CCLNM) in predicting lateral cervical lymph node metastasis (LCLNM) in patients with papillary thyroid carcinoma (PTC).

METHODSFrom January 2005 to October 2010, a total of 133 patients diagnosed as PTC underwent central and lateral cervical lymph node dissection were enrolled in this study. Quantitative analysis was performed to explore the correlation between the number of CCLNM and LCLNM.

RESULTSThe sensitivity of central cervical node metastasis to predict lateral cervical node metastasis was 84.7%(61/72), and the positive predictive value (PPV) was 66.3% (61/92). The incidence of lateral cervical LNM was correlated with the number of CCLNM (r=0.911, P=0.004). The LCLNM rates in patients with number of CCLNM <2 and ≥ 2 were 54.5% (12/22) and 70.0% (49/70), respectively, with a non-significant difference (P=0.181). The LCLNM rates in patients with number of CCLNM < 3 and ≥ 3 were 50.0% (19/38) and 77.8% (42/54), showing a significant difference (P=0.006). The LCLNM rates in patients with number of CCLNM <4 and ≥ 4 were 55.1% (27/49) and 79.1% (34/43), with a significant difference (P=0.015). The LCLNM rates in patients with number of CCLNM <5 and ≥ 5 with the LLNM rate were 57.6% (34/59) and 81.8% (27/33), showing a significant difference (P=0.019). The LCLNM rates in patients with number of CCLNM <6 and ≥ 6 were 60.0% (39/65) and 81.5% (22/27), showing a significant difference (P=0.047).

CONCLUSIONSCCLNM has a significant association with LCLNM in patients with papillary thyroid carcinoma. LCLNM is mainly observed in patients with ≥ 3 CCLNM. Therefore, the number of CLNM ≥ 3 may be a valuable predictor of lateral cervical lymph node metastasis, and lateral cervical lymph node dissection should be considered.

Axilla ; Carcinoma, Papillary ; secondary ; Humans ; Lymph Node Excision ; Lymph Nodes ; pathology ; Lymphatic Metastasis ; Neck ; Neck Dissection ; Sensitivity and Specificity ; Thyroid Neoplasms ; pathology

Objective To investigate the constitutional types of Chinese medicine of primary bile reflux gastritis among different seasons. Methods Data of gastroscopy center during August 2015 to July 2016 were analyzed. A total of 603 patients were diagnosed as primary bile reflux gastritis. After gastroscopy, the standardized constitution in Chinese medicine questionnaire was used to evaluation the scores of all kinds of constitutional types. The Constitutional types of Chinese medicine of primary bile reflux gastritis among different seasons were analyzed. Results Among all seasons, the positive detection rate showed significant difference (χ2=13.041, P=0.005), and summer group showed the highest among the four seasons (23.38% vs. 17.63%,χ2=12.414, P<0.001). Among all seasons, constitutional types of Chinese medicine of primary bile reflux gastritis had significant difference (χ2=37.441, P<0.001). Damp-heated type had significant difference among seasons (χ2=8.472, P=0.037), especially during the summer (χ2=5.847, P=0.016). Conclusions The summer may have more primary bile reflux gastritis chance to be diagnosed as primary bile reflux gastritis. Yang-deficiency type, Gentleness type, Qi-deficiency type and damp-heat type were more common in primary bile reflux gastritis patients.

Objective: To analyze the hand-foot-mouth disease (HFMD) enterovirus 71 (EV-A71) infection epidemic characteristics of Guangdong Province from 2011 to 2015. Methods: We colleted data on common cases of hand-foot-mouth disease infected with EV-A71 reported from eight sentinel hospitals in Guangdong Province from January 2011 to December 2015, through the "Guangdong Province Acute Infectious Disease Surveillance Information Platform System" , including the age and incidence of cases. Time and etiological data, etc.We also collected data on the number of reported cases of HFMD disease and the number of laboratory-confirmed cases, through the "China Disease Prevention and Control Information System" , including data on common cases of HFMD disease, data on epidemics of severe cases and deaths, and the age, onset time, and pathogens of cases. Learning data, etc.The data from two sources were used to estimate the incidence of HFMD in EV-A71 and describe its distribution characteristics.Chi-square test was used to compare the positive rate of HF-A71 infection in hand-foot-mouth disease and the difference in estimated incidence among different age groups and months. Results: Eight sentinel hospitals from 2011 to 2015 reported a total of 1 855 common cases of EV-A71 infection, of which the highest was in 2014 (31.6%, 605/1 916) and the lowest was in 2015 (6.8%, 134/1 971) (χ²=521.85, P<0.001).According to the Disease Surveillance Reporting Information System, 1 772 516 cases of HFMD disease were reported from 2011 to 2015 in Guangdong Province, and 1 902 cases of severe and fatal cases of EV-A71 infection.The composition ratio of EV-A71 infected was 72.6% (1 775/2 444) and 97.0% (127/131) of severe HFMD disease in Guangdong province during 2011-2015.The average annual incidence of HF-A71 infection in all age groups showed a decreasing trend with age (χ^2trend=990 273.20, P<0.001), and it was the highest in the 1-year-old group, which was 1 697.67/100 000, and the lowest in the 4-year-old group, which was 705.46/100 000. The difference of monthly average incidence of EV-A71 infection in HF-A71 in each month was statistically significant (χ²=401.23, P<0.001), the highest in May at 15.51 per 100 000, and the lowest in July at 9.42 per 100 000. Conclusion EV-A71 infection rate of ordinary HFMD varies in different years. The most severe and death cases of HFMD were EV-A71 infected. 1 year old children were the high-risk group of infected with EV-A71 HFMD. April was the epidemic months of EV-A71 HFMD infection.

【Objective】 To determine the effect of storage time on the chemokine storage and chemokine scavenging function of erythrocyte atypical chemokine receptor 1(ACKR1). 【Methods】 Samples from six bags of red blood cells product, split into two gruoups(10 mL each), were stored in a refrigerator and sampled on day 5 and day 25 during storage, respectively, to measure the concentrations of CCL5, CXCL8 and CCL11 and the ACKR1 chemokine scavenging function of erythrocytes. In addition, 42 erythrocyte products(1 mL each), stored for 5 to 25 days, were sampled to measure the expression of ACKR1 and the concentrations of chemokines CCL5, CXCL8 and CCL11 on the erythrocyte membrane. 【Results】 Compared with RBCs stored for 5 days, no difference in the concentration of CCL5(467.7±250.2 pg/mL vs 586.9±209.5pg/mL, P>0.05) and CCL11(122.2±30.3pg/mL vs 125.5 ±32.7pg/mL, P>0.05)were noticed in erythrocyte lysates stored for 25 days, but the concentrations of CXCL8 decreased significantly(42.4±5.3pg/mL vs 24.3± 5.9pg/mL, P<0.05), and the scavenging ability of erythrocyte ACKR1 to chemokines CCL5(2 634.0±730.2pg/mL vs 453.8±257.4 pg/mL, P<0.05), CXCL8(1 117.0±236.6pg/mL vs 306.2±28.3pg/mL, P<0.05) and CCL11 decreased(1 278.0 ±164.5pg/mL vs 467.2 ±50.9pg/mL, P<0.05). Chemokines CCL5, CXCL8 and CCL11 had not been detected on the surface of erythrocyte membrane. There was no significant change in the expression of ACKR1 on the surface of erythrocytes from day 5 to day 25 (P>0.05). 【Conclusion】 Erythrocytes are the main places for storing ACKR1 binding chemokines. During the storage, the chemokine scavenging of erythrocyte ACKR1 and some intracellular the ACKR1 binding chemokines are reduced.

Objective:To analyze and compare the practical value of serum cystatin C(Scys C)and serum creatinine(SCr)in the assessment of kidney function in older adults.Methods:A retrospective, cross-sectional study was performed in 2 450 participants who were divided into a non-elderly group(<65 years)and an elderly group(≥65 years).Glomerular filtration rate(GFR), Scys C and SCr were measured by 99mTc-DTPA clearance, particle-enhanced immunoturbidimetry and an oxidase method, respectively.The χ2 test was used to compare increases in percentage of Scys C and SCr at the same GFR level.The screening value of Scys C and SCr for GFR<60 ml·min -1·1.73m -2was evaluated by the area under curve(AUC)of the receiver operating characteristic(ROC)curve.Values of 95% reference ranges were established for Scys C and SCr at different GFR levels. Results:The proportions of the general population with increased Scys C were 82.74%(556/672)and 94.74%(90/95), respectively, for GFR levels between 30~59 ml·min -1·1.73m -2and <30 ml·min -1·1.73m -2, while only 38.24%(257/672)and 75.79%(72/95)had elevated SCr levels( χ2=278.328, 13.571, both P<0.001).For the above GFR intervals, the proportions of older adults with increased Scys C were 84.81%(240/283)and 100.00%(43/43)respectively, and the proportions for non-elderly adults with increased Scys C were 81.23%(316/389)and 90.38%(47/52)( χ2=1.463, 4.364, P=0.226, 0.037), respectively.The screening value of Scys C for GFR<60 ml·min -1·1.73m -2was slightly better than SCr in terms of sensitivity, specificity and the Youden index.However, the sensitivity and specificity of Scys C in older adults were 76.4% and 75.7%, respectively, both lower than 78.7% and 84.0% in non-older adults.The variability of Scys C increased progressively with age.The reference range for Scys C was higher in older adults than in non-older adults at the same GFR level. Conclusions:When screening for GFR<60 ml·min -1·1.73m -2, the sensitivity and specificity of Scys C are slightly better than those of SCr, but are lower in older adults than in non-older adults.Scys C levels are higher and more variable in older adults.Using Scys C to assess GFR may lead to over-diagnosis of chronic kidney disease in older adults.

【Objective】 To investigate the correlation between human platelet antigens (HPA) polymorphisms and platelet parameters. 【Methods】 The HPA-2, HPA-3, HPA-5 and HPA-15 genotypes of 139 healthy Chinese Han individuals were detected using TaqMan-MGB probe real-time PCR, while platelet parameters including platelet count (PLT), mean platelet volume (MPV), platelet distribution width (PDW) and platelet-large cell ratio (P-LCR) were measured using hematology cell analyzer. 【Results】 The PLT was significantly lower in the individuals with HPA-2aa genotype compared to those with HPA-2ab [(234.35±50.10)×10³/μL vs (269.58±41.66)×10³/μL, P<0.05], while the PLT was significantly higher in individuals with HPA-5aa and HPA-15aa genotypes compared to those with HPA-5ab and HPA-15ab/bb [HPA-5: (239.36±49.81)×10³/μL vs (200.29±48.02)×10³/μL; HPA-15: (251.00±58.41)×10³/μL vs (231.29±45.20)×10³/μL, P<0.05], respectively. The MPV, PDW and P-LCR were significantly lower in individuals with HPA-5aa genotype compared to those with HPA-5ab [mpv: (10.01±0.72)fL vs (10.94±1.01)fL; PDV: (11.94%±1.35%) vs (14.25%±2.78%); P-LCR: (25.32%±5.03%) vs (31.73%±6.39%), P<0.05], but did not differ among the HPA-2 and HPA-15 genotypes. Besides, no significant differences in platelet parameters of individuals with HPA-3aa and HPA-3ab/bb genotypes were notable(P>0.05). HPA-2, -5 and -15 polymorphisms were identified as independent factors for platelet count, and HPA-5 polymorphism was an independent factor for platelet volume, revealed by multiple linear regression analysis. 【Conclusion】 HPA-2, -5 and -15 polymorphisms are correlated with platelet count, and HPA-5 polymorphism is correlated with platelet volume.

Objective:To explore the predictive factors for efficacy of vagus nerve stimulation (VNS) in drug resistant epilepsy (DRE).Methods:A total of 91 DRE patients underwent VNS in our hospital from July 2015 to August 2019 were chosen in our study. The preoperative evaluation data and postoperative follow-up data were retrospectively analyzed. Univariate Logistic regression analysis and multivariate Logistic regression analysis were used to investigate the predictive factors for efficacy of VNS.Results:One year after VNS, McHugh grading I in 20 patients (22%), grading II in 37 (40.6%), grading III in 23 (25.3%), grading IV in 2 (2.2%), and grading V in 9 (9.9%)were noted. There were 57 patients (62.6%) reached the responder status (seizure frequency reduction≥50%, McHugh grading Ⅰ or Ⅱ), and 34 (37.4%) patients failed to reach the responder status (seizure frequency reduction<50%, McHugh grading Ⅲ-Ⅴ). The univariate Logistic regression analysis showed that the differences in lateralized interictal epileptiform discharge (IED), focal onset, and age of patients accepted electrode implantation were significant between the two groups ( P<0.05). Multivariate Logistic regression analysis demonstrated that the lateralized IDE ( OR=5.214, 95%CI: 1.331-20.431, P=0.018) and focal onset ( OR=4.111, 95%CI: 1.432-11.802, P=0.009) were the independent predictive factors for efficacy of VNS. Conclusion:The lateralized IDE and focal onset can be used as important references for VNS in DRE patients.