Objective To develop a method for determination of catechins and alkaloids in brick-tea by high performance liquid chromatography(HPLC) with diode array detection(DAD),and to explore optimum extraction conditions for catechins and alkaloids components in brick-tea.Methods Catechins and alkaloids were separated and detected by HPLC.Orthogonal experiment and paired t test was carried out to compare the effect of water and alcohol as extraction solvents and to obtain optimum extraction conditions for extracting catechins and alkaloids components in brick-tea.Results Six kinds of catechins of catechin,epicatechin,gallocatechin,epigallocatechin,epicatechin gallate,epigallocatechin gallate and two kinds of alkaloids of caffeine and theobromine were separated and detected simultaneously.Calibration curves between peak areas and concentration of each component in bricktea were linear within a suitable concentration range,and coefficients of determination (R2) were between 0.9990-0.9999; spiked recoveries were from 83.78％ to 106.35％,and relative standard deviations(RSD) were between 0.50％-1.51％.The optimum extraction condition for catechins and alkaloids was 80％ ethanol,solid-liquid ratio of 1:10,temperature 80 ℃ and extraction time 30 min.Conclusion Alcohol as extraction solvents with optimal combination on HPLC,six kinds of catechins and two kinds of alkaloids are separated accurately,qualitatively,rapidly and sensitively.

Objective To discuss the etiology,clinical features,diagnosis and treatment of congenital pleural effusion in fetuses and neonates in order to improve the understanding of this disease. Methods Six neonate cases with congenital pleural effusion were retrospectively analyzed in neonates who were admitted to the Department of Neonatolo-gy of the First Affiliated Hospital of Zhengzhou University after birth and the etiology,clinical features,diagnosis and re-lated treatment were analyzed based on literature review. Results Among 6 patients with congenital pleural effusion, chylothorax was found in 3 cases,one of whom had chylothorax,chylous abdominal,21 trisomy syndrome and congenital hypothyroidism,and the etiology of the other 3 cases were unknown. Diagnosis mainly was depended on imaging and la-boratory tests. The number of nucleated cells of hydrothorax or ascites were(1 588 - 13 057)× 106 / L,mainly lympho-cytes. Protein qualitative was( + - + + + ),the chylothorax qualitative test was positive in 3 cases. The liver function showed that the total protein and albumin were decreased in varyig degrees. Conservative or surgical treatment was taken according to the situation of the patients. Among 6 patients,3 cases were cured after treatment,the others gave up treat-ment finally. Conclusions The etiology of congenital pleural effusion was different,and often associated with chromo-somal abnormalities or other malformations,ultrasonography was the main method to diagnose congenital pleural effusion and the patients should be dynamically observed or treated during the antepartum or intrapartum period. If the neonates are found to have pleural effusion in prenatal period early diagnosis and treatment is a best choice.

To investigate different effects of fiscal health expenditure, household spending on health and social health expenditure on narrowing the gap between urban and rural health resource allocation. Methods: With the relevant data of China’ s medical and health through 1985-2011 years, taking methodology of the state space model to estimate the varying-time elasticity of different types of expenditures on urban and rural health resource allocation gap. Results: For narrowing the gap, household health expenditure played the leading role, fiscal health expenditure played smaller role and the social health expenditure played the supplementary role; the elastic of different health expenditure proportion was fluctuated before 2002, which became stable after 2002; it is easy to improve the “hard conditions” rather than the “soft conditions” . Conclusion: To accelerate the process of urban and rural medical security system integration, it is inevitable to establish an efficient configuration mechanism for urban and rural health expense, balanced develop urban and rural medical insurance system and scientifically guide social health investment.

Surazepam ( Sur ) is a benzodiazepine derivative. Sur ( 0.2~0.27m-mol/L ) inhibited the contraction of isolated cervices uteri of rats and human beings induced by oxytocin and Ca2+ after high K+ concentration depolarization Sur ( 3.5~ 4 mg/kg ) iv could also inhibit the spontaneous contraction of uterus of rabbit in situ. The cumulative dose-response curves for Sur and CaCl2 exhibited non-competition.Both Sur and nifedipine markedly inhibited extracellular and intra-cellular Ca2+ dependent contraction induced by oxytocin.

Objective To analyze the serum calcium , phosphate and alkaline phosphatase level among apparently healthy school children and adolescents in Heilongjiang Province and establish the reference intervals in different gender and different age groups .Methods Random sample of 2 101 primary and secondary school students from 9 to 18-year-old was collected from different district of Heilongjiang Province including Harbin and Mudanjiang from July 2008 to June 2009 .The fasting venous blood was collected and serum calcium , phosphate and alkaline phos-phatase concentration was measured as soon as possible .After screening outlier individual , a total of 2 091 subjects were enrolled.The reference intervals of serum calcium , phosphate and alkaline phosphatase for healthy school children and adolescents were established by gender and age ( P2.5 to P97.5 ) .Results The change tendency of serum calcium, phosphate and alkaline phosphatase with age and sex were presented .All these parameters had shown inverse relationship with age and were significantly higher in boys than girls (P<0.001).Serum calcium, phosphate of both sexes and serum alkaline phosphatase of girls declined progressively with age .However , the highest alkaline phosphatase level was seen at 13 years in boys.Alkaline phosphatase showed a positive correlation with age before 13 years of age , but after that alkaline phosphatase started to decline .Conclusions Reference in-tervals of serum calcium , phosphate and alkaline phosphatase for healthy school children and adolescents in Hei -longjiang Province in the age group of 9-18 years were presented , which supply good reference value for clinicians especially pediatricians to interpret the results of school children and adolescents and make decision .

The immunoregulation effect to polysaccharides from Bifidobacterium spp. was investigated on the base of functional assessment standards of health food. Effects of the EPS on immunity were investigated by promoted the proliferation of spleen lymph cells, delayed type hypersensitivity reaction, the HC50 value and macrophage function assay in mice. Data showed that the EPS could obviously increase the ratio of swallowed chicken red blood cell by macrophage and the HC50 value in mice. However, no significant effect was found on the delayed type hypersensitive induced by sheep red blood cell, for only the low dose of 100 mg/(kg?d) EPS promoted the proliferation of spleen lymph cells. Bifidobacterium spp. EPS can certain immunomodulating function.

Objective:To compare the survival rate and adverse reactions of patients with advanced hypopharyngeal squamous cell carcinoma undergoing surgery combined with chemoradiotherapy, and to analyze the prognostic factors of patients.Methods:The clinicopathologic data of 78 patients with advanced hypopharyngeal squamous cell carcinoma admitted to the Department of Radiation Oncology of the First Affiliated Hospital of Bengbu Medical University from August 2013 to December 2018 were retrospectively analyzed. The patients were divided into surgery combined with chemoradiotherapy group ( n=27) and chemoradiotherapy group ( n=51) according to different treatment methods. The median follow-up time was 46 months (20-84 months). The main observation indicators were overall survival (OS), progression-free survival (PFS) and local control rate (LCR). Cox regression model was used to analyze the prognostic factors. Results:Until July 31, 2020, 51 of the 78 patients with advanced hypopharyngeal squamous cell carcinoma died, including 6 cases of local recurrence, 11 cases of distant metastasis, and 34 cases of other causes (15 cases of hemorrhage, 15 cases of cachexia, and 4 cases of other diseases). In the surgery combined with chemoradiotherapy group, 12 patients died, accounting for 44.44%. In the chemoradiotherapy group, 39 patients died, accounting for 76.47%. The 1-, 3- and 5-year OS rates of 78 patients were 57.7%, 36.3% and 27.2% respectively, the 1-, 2- and 3-year PFS rates were 49.5%, 38.7% and 32.6% respectively, and the 1-, 2- and 3-year LCR were 53.4%, 40.0% and 34.2% respectively. The 1-, 3- and 5-year OS rates in the surgery combined with chemoradiotherapy group were 74.1%, 50.1% and 44.6%, and those in the chemoradiotherapy group were 49.0%, 29.3% and 12.8%, with a statistically significant difference ( χ2=5.142, P=0.023). The 1-, 2- and 3-year PFS rates in the surgery combined with chemoradiotherapy group were 62.1%, 54.3% and 44.4%, and those in the chemoradiotherapy group were 43.1%, 30.6% and 26.7%, with no statistically significant difference ( χ2=3.222, P=0.073). The 1-, 2- and 3-year LCR of the surgery combined with chemoradiotherapy group were 69.8%, 54.3% and 44.4%, and those in the chemoradiotherapy group were 45.1%, 32.9% and 29.6%, with no statistically significant difference ( χ2=3.576, P=0.059). The results of univariate analysis showed that tumor T stage ( χ2=7.140, P=0.008), N stage ( χ2=4.493, P=0.034) and treatment method ( χ2=5.142, P=0.023) were all independent influencing factors of the OS of patient with advanced hypopharyngeal squamous cell carcinoma; T stage ( χ2=5.807, P=0.016) and N stage ( χ2=6.587, P=0.010) were both independent influencing factors of PFS. The results of multivariate analysis showed that tumor T stage ( HR=2.121, 95% CI: 1.142-3.938, P=0.017), N stage ( HR=2.088, 95% CI: 1.144-3.811, P=0.016) and treatment method ( HR=0.430, 95% CI: 0.226-0.815, P=0.010) were all independent prognostic factors of the OS of patients with advanced hypopharyngeal squamous cell carcinoma; T stage ( HR=1.884, 95% CI: 1.011-3.510, P=0.046) and N stage ( HR=1.904, 95% CI: 1.058-3.429, P=0.032) were both independent prognostic factors of PFS. During the treatment period, there were statistically significant differences in the incidences of radioactive pharyngitis [7.41% (2/27) vs. 39.22% (20/51), χ2=8.821, P=0.003] and radioactive dermatitis [3.70% (1/27) vs. 29.41% (15/51), χ2=7.156, P=0.007] between the surgery combined with chemoradiotherapy group and the chemoradiotherapy group. However, there were no statistically significant differences in the incidences of radioactive oral mucositis [11.11% (3/27) vs. 17.65% (9/51), χ2=0.186, P=0.666], bone marrow suppression [37.04% (10/27) vs. 50.98% (26/51), χ2=1.381, P=0.240], pharynx infection [11.11% (3/27) vs. 5.88% (3/51), χ2=0.143, P=0.706] and tracheal fistula [7.41% (2/27) vs. 0 (0/51), P=0.117] between the two groups. Conclusion:The 1-, 3- and 5-year OS rates in the surgery combined with chemoradiotherapy group are higher than those in the chemoradiotherapy group, and the incidences of adverse reactions are low. T stage, N stage and treatment method are independent prognostic factors for OS of advanced hypopharyngeal squamous cell carcinoma patients, while T stage and N stage are independent prognostic factors for PFS.

Objective To study the changes of cytokines in children with hand-foot and mouth disease.Methods Sixty-two cases of hand-foot-mouth disease admitted to our hospital from March 2011 to December 2011 were included in this study.Thirty-seven cases were male and 25 cases were female,the youngest one was four month old,and the oldest one was eleven month and 4 years old,the average age was (1.56 ± 0.98) years old.Sixty-two children with hand-foot-mouth disease were devided into ordinary group (n =20),severe group (n =20),critically ill group (n =22).Twenty healthy children served as control group.The plasma levels of pro-inflammatory cytokines [tumor necrosis factor(TNF)-α,interleukin(IL)-1β、IL-6] and anti-inflammatory cytokines (IL-1 0、IL-13、IL-4) were detected.Results The pro-inflammatory and anti-inflammatory cytokines of patients with hand-foot and mouth disease were increased compared with control group.The levels of TNF-α in severe and critically ill groups were (201.45 ± 133.42) ng/L,(220.37 ± 117.54)ng/L respectively,which significantly increased compared with ordinary group [(118.12 ±11205) ng/L] (P ＜0.05).The levels of IL-1β and IL-6 in critically ill cases were (651.77 ±538.45) ng/L and (88.02 ±50.76) ng/L respectively,which significantly increased compared with severe cases [(551.75 ± 252.75) ng/L,(59.25 ± 28.80) ng/L] and ordinary cases [(270.18 ± 249.79) ng/L,(55.76 ± 28.68) ng/L] (P ＜ 0.05).The level of IL-10 was (137.53 ± 72.07) ng/L in ordinary cases,which increased significantly compared with the severe and critically ill cases[(57.07 ±55.02) ng/L,(73.37 ±56.01) ng/L] (P ＜0.05).The levels of IL-13 were (507.53 ±210.86) ng/L and (489.67 ± 168.99) ng/L in severe and critically ill cases respectively,which significantly increased compared with ordinary cases [(387.16± 157.43) ng/L] (P ＜0.05).The levels of IL-4 showed no significant differences among the ordinary,severe and critically ill groups(P ＞ 0.05).Conclusion The pro-and anti-inflammatory cytokines were involved in inflammatory response simultaneously in patients with hand-foot and mouth disease.The increases of TNF-α,IL-1β and IL-6 are consistent with severity of the disease,while factor IL-10,IL-13 are decreased as the severity of the disease.The increase of the pro-inflammatory cytokines and decrease of the anti-inflammatory cytokines are the important sign of the exacerbation.

ObjectiveTo investigate the effects of grape seed proanthocyanidin extracts (GSPE) on advanced glycation end product receptor (RAGE),NF-Κb and connective tissue growth factor (CTGF) in the myoeardium of diabetic rats.MethodsTotal 30 streptozotocin (STZ) induced diabetic rats were randomly divided into 2 groups:diabetic group (DM1,n-15) and GSPE (250 mg/ kg,i.g) treated diabetic group (DM2,n= 15).Another two control groups:normal rats(C1,n= 10)and normal rats treated with GSPE (250 mg/kg,i.g) (C2 group,n= 10) were also observed.After 24 weeks,blood was collected to measure fasting plasma glucose (FBG) and RAGE.The protein expression of NF-Κb was determined in myocardial tissue by immunohistochemical staining and Western blot.The protein expressions of RAGE and CTGF were measured by Western blot.Results The levels of FBG and RAGE were significantly higher in diabetic rats than in control rats (P＜0.05).After GSPE treatment,RAGE level significantly reduced (P＜0.05),but FBG had no change in diabetic rats.The protein expressions of RAGE,NF-Κb and CTGF in the myocardial tissue of diabetic rats had marked increase compared with control rats (P＜ 0.05),however,their levels significantly reduced after GSPE treatment (P＜0.05).ConclusionsGSPE may protect diabetic rats against cardiomyopathy,possibly by decreasing the protein expressions of RAGE,NF-Κb and CTGF.