Objective: To investigate the mechanism of Mycobacterium tuberculosis invasion to mouse dendritic cells ( DC ) .Methods: Mycobacterium tuberculosis strain H37Rv was co-cultured with mouse DC2.4 cells.The mRNA expression of Toll-like receptor 2/4(TLR2/4) in DC2.4 cells was detected by fluorescent quantitative real-time PCR and the protein expression of nuclear factor κB ( NF-κB ) was assessed by Western blotting .The extracellular concentration of tumor necrosis factor α( TNF-α) was measured by ELISA methods during Mycobacterium Tuberculosis invasion .Indirect immunofluorescent staining and flow cytometry assay were used to detect the expression of CD80 and CD86 on DC2 .4 cells before and after invasion .Results:The invasion of Mycobacterium tuberculosis in DC2.4 cells was observed after 2 h of co-incubation.The rates of invasion were (37.9 ±5.6)%,(51.2 ±7.6)%,(57.2 ±8.9)%and(63.9 ± 6.8)% at 6,8,10 and 12 h after co-incubation,respectively.The mRNA expression level of TLR2 /4 was significantly increased at 6 h but decreased at 10 h after co-incubation.The expressions of NF-κB p65 and TNF-αwere higher in DC2.4 cells after being invaded by 6 , 8 , and 10 h and then gradually decreased .CD80 and CD86 expression were increased on DC 2 .4 at 6 h after co-incubation .Conclusion:Invasion of Mycobacterium tuberculosis strain H37 Rv to DC might enhance its antigen-presenting function through activation of TLR 2/4-NF-kB signaling pathway .

Objective To evaluate the nutritional status of iodine of pregnant and lactating women in coastal and inland areas of Zhejiang province,and to provide scientific basis for iodine supplementation.Methods In 2009,five coastal cities,five coastal counties and three inland areas from Zhejiang province were selected by the cluster sampling method,and one sub-district(township) was randomly selected in each city (county),then one community (village) was randomly selected in each sub-district (township).Thirty pregnant women,thirty lactating women and fifty children aged 8 - 10,were randomly selected in each community(village) as the investigation objects to collect instant urine samples to detect urine iodine,and to collect thirty resident edible salt and some water samples to detect salt iodine and water iodine,if the numbers of water source were more than 5 then 1 water sample was collected by their location of east,south,west,north and center in each community(village),otherwise,the numbers of water samples collected were equal to the number of community (village).Results The medians of salt iodine of coastal city,coastal county and inland area were 28.42,25.29,and 33.24 mg/kg,respectively,and the medians of water iodine correspondingly were 5.41,11.52,and 2.80 μg/L,respectively.The medians of urinary iodine of pregnant and lactating women in Zhejiang province were 148.72 and 161.34 μg/L,respectively,which were less than that of children aged 8 - 10(231.02 μg/L,Z =8.57,8.24,all P ＜ 0.017).The medians of urinary iodine in pregnant women from different areas were ranked in order as inland areas(211.42 μg/L),coastal counties (150.51 μg/L) and coastal cities (123.33 μg/L,Z =2.80,5.31,2.42,all P ＜ 0.017),and in lactating women,the medians of urinary iodine in inland areas( 197.43 μg/L) was higher than that in coastal cities( 139.64 μg/L,Z =4.03,P ＜ 0.017).Conclusions The overall levels of iodine nutrition in lactating and pregnant women in Zhejiang province are in the appropriate level,but that of the pregnant women in the coastal cities is inadequate.

Objective To evaluate the myocardial systolic function and ventricular remodeling in heart failure rat induced by myocardial infarction (MI) with S/SRI and MMP-9. Methods A total of 70 male SD rats were randomly assigned to 4 groups: 4 weeks and 8 weeks MI ( anterior descending branch of left coronary artery were ligated ) , sham operation (thoracotomy without ligation of coronary artery ) and nonoperated control group. The regional myocardial systolic function of rats was quantified with S/SRI. The myocardial MMP-9 expression was detected by Western blot Results In the 4 weeks MI group, all segment's Ssys, SRsys, the strain of end-systole were reduced while PSI was increased compared to sham and nomoperated group with the exception of the inferior wall. These changes were more significant in 8 weeks MI group compared to the 4 weeks MI group. In the 4 weeks MI group, the expression of MMP-9 was significantly upregulated than the sham operation group and this upregulation was more significant at 8 weeks post MI. Conclusions S/SRI can quantitative evaluate the regional systolic function of heart failure rat induced by myocardial infarction. Progressive upregulation of myocardial MMP-9 expression paralleled the deterioration of regional systolic function in this heart failure rat model.

Objective To study the application value of dynamic monitoring of blood pressure in the prevention and treatment of elderly hypertension. Methods 519 hypertensive patients from December 2017 to December 2018 were monitored with ambulatory blood pressure monitoring, and were divided into the elderly group (≥60 years old, 264 cases) and the control group (<60 years old, 255 cases). The results of ambulatory blood pressure monitoring in two groups were analyzed, which inclued the circadian rhythm of blood pressure, blood pressure, pulse pressure, coefficient of variation of blood pressure, blood pressure load value, average heart rate and morning blood pressure surge. Results The incidence of abnormal circadian rhythm of ambulatory blood pressure in the elderly group was 76.5%. Compared with the control group, there were differences in the indexes of diastolic blood pressure (DBP), diastolic blood pressure load value (DBPLV), pulse pressure (PP), 24 h average heart rate (24 hAHR), systolic blood pressure coefficient of variation (SBPCV), 24 h diastolic blood pressure coefficient of variation (24 h DBPCV) and morning diastolic blood pressure surge (MDBPS) between the two groups(all P<0.05). There were differences in 24 h systolic blood pressure (24hSBP), night systolic blood pressure (nSBP), night diastolic blood pressure (nDBP), night pulse pressure (nPP), day systolic blood pressure load value (dSBPLV), ninght systolic blood pressure load value (nSBPLV), 24 h SBPCV, 24 h dDBPCV and other indicators among different blood pressure types in the elderly group (all P<0.05). Conclusion Ambulatory blood pressure monitoring indicators have important guiding value for the prevention and treatment of elderly hypertension.

Objective To evaluate the dietary iodine intake level of population in coastal and inland areas of Zhejiang province.Methods The cluster sampling method was applied to select Zhoushan,Ningbo and Taizhou cities from Zhejiang province as coastal areas,to select Jinhua,Quzhou and Lishui cities from Zhejiang province as inland areas,and two counties(districts) were randomly selected in each chosen city,three sub-districts(towns) were randomly selected in each chosen counties (districts),then one community (village) was randomly selected in each chosen sub-districts(towns).Adult residents aged greater than 18 were selected as investigation subjects,their dietary iodine intake in the past 24 hours was investigated,and the Food composition table” was inquired to get the data of dietary iodine intake.One hundred copies of residential edible salt samples and drinking water samples in each of the selected community (village) were collected to detect salt iodine and water iodine by direct titrimetric and spectrophotometric method,respectively.Results The mean of adult residents' dietary iodine intake in Zhejiang coastal area was 267.76 μg/d,which was less than that in inland area (429.05 μg/d,t =- 6.90,P ＜0.05),and the means of adult residents' dietary iodine intake from drinking water,laver and fish(5.75,69.72,5.61 μg/d,respectively) in coastal area were higher than those in inland areas(3.25,35.27,3.43 μg/d,respectively,t =21.73,3.92,4.08,all P ＜ 0.05),however,the means of adult residents' dietary iodine intake from salt,kelp and other food (166.81,3.04,16.82 μg/d,respectively) in coastal areas were less than those in inland areas (355.15,6.14,25.81 μg/d,respectively,t =- 8.76,- 5.49,- 18.56,all P ＜ 0.05).In coastal areas,the proportion which was less than estimated average requirement of iodine(EAR,120 μg/d) was 46.48％ (1029/2214),the ratio which was higher than the maximum tolerable intake of iodine(UL,1000 μg/d) was 3.34％ (74/2214),and the average contribution rate of dietary intake of iodine in salt was 62.30％(166.81/267.76).While in inland areas,the corresponding proportions were 7.61％ (171/2246),2.80％ (63/2246) and 82.78％ (355.15/429.05),respectively.Conclusions The dietary iodine intake in Zhejiang inland areas has reached the recommended nutrient intake levels of the Chinese Nutrition Society,but there is a certain degree of insufficient iodine intake in population of the coastal areas.

OBJECTIVETo investigate the feasibility of detecting cyclin D1 protein expression and t(11;14) chromosomal translocation in paraffin-embedded tissues and its diagnostic and differential diagnostic significance for mantle cell lymphoma (MCL).

METHODSParaffin-embedded samples of 36 cases of MCL and a control group of 71 cases of small B-cell lymphomas were retrieved from archive materials. Immunohistochemical staining for cyclin D1 and semi-nested PCR for t(11;14) were detected in all samples. House-keeping gene beta-actin was used to detect the quality of DNA.

RESULTS(1) Cyclin D1 was expressed in 26 of the 36 MCL (72.2%). There was no cyclin D1 expression in the control group. (2) beta-actin DNA was detected in 101 of the 107 tumor cases (94.4%). t(11;14) was detected in 22 of the 36 MCL. Translocation was not found in control group. The positive rate for t(11;14) was 64.7% in MCL after exclusion of 2 cases which were negative for both t(11;14) and beta-actin. (3) 29 cases were positive for cyclin D1 and/or t(11;14), the positive rate reached 80.5%.

CONCLUSIONThe combined detection of cyclin D1 and t(11;14) in paraffin-embedded tissues is found to be a specific and feasible method for diagnosis and differential diagnosis of mantle cell lymphoma.

Adult ; Aged ; Aged, 80 and over ; Chromosomes, Human, Pair 11 ; Chromosomes, Human, Pair 14 ; Cyclin D1 ; analysis ; Female ; Humans ; Immunohistochemistry ; Lymphoma, Mantle-Cell ; chemistry ; diagnosis ; genetics ; Male ; Middle Aged ; Paraffin Embedding ; Polymerase Chain Reaction ; Translocation, Genetic

Carcinoma, Hepatocellular ; genetics ; metabolism ; Cell Proliferation ; drug effects ; Humans ; Liver Neoplasms ; genetics ; metabolism ; Oligodeoxyribonucleotides, Antisense ; pharmacology ; Tumor Cells, Cultured ; beta Catenin ; biosynthesis ; genetics

OJBECTIVETo investigate the predictive value of the qualitative assessment of general movements (GMs) for adverse outcomes at 24 months of age in full-term infants with asphyxia.

METHODSA total of 114 full-term asphyxiated infants, who were admitted to the neonatal intensive care unit between 2009 and 2012 and took part in follow-ups after discharge were included in the study. All of them received the qualitative assessment of GMs within 3 months after birth. The development quotient was determined with the Bayley Scales of Infant Development at 24 months of age.

RESULTSThe results of the qualitative assessment of GMs within 3 months after birth showed that among 114 infants, 20 (17.5%) had poor repertoire movements and 7 (6.1%) had cramped-synchronized movements during the writhing movements period; 8 infants (7.0%) had the absence of fidgety movements during the fidgety movements period. The results of development quotient at 24 months of age showed that 7 infants (6.1%) had adverse developmental outcomes: 6 cases of cerebral palsy and mental retardation and 1 case of mental retardation. There was a poor consistency between poor repertoire movements during the writhing movements period and the developmental outcomes at 24 months of age (Kappa=-0.019; P>0.05). There was a high consistency between cramped-synchronized movements during the writhing movements period and the developmental outcomes at 24 months of age (Kappa=0.848; P<0.05), and the results of predictive values of cramped-synchronized movements were shown as follows: predictive validity 98.2%, sensitivity 85.7%, specificity 99.1%, positive predictive value 85.7%, and negative predictive value 99.1%. There was a high consistency between the absence of fidgety movements during the fidgety movements period and the developmental outcomes at 24 months of age (Kappa=0.786; P<0.05), and its predictive values were expressed as follows: predictive validity 97.4%, sensitivity 85.7%, specificity 98.1%, positive predictive value 75.0%, and negative predictive value 99.1%.

CONCLUSIONSCramped-synchronized movements and absence of fidgety movements can predict adverse developmental outcomes at 24 months of age in full-term infants with asphyxia.

Asphyxia Neonatorum ; physiopathology ; Child Development ; Humans ; Infant ; Infant, Newborn ; Movement ; Predictive Value of Tests ; Qualitative Research

Objective To study the distribution of stress, strain and effective surface pressure in the knee joint. Methods Based on CT/MR scan image data and using the Mimics/ANSYS software, a three-dimensional finite element model of the knee joint (including the upper/lower knee and the meniscus) was established with the principle of reverse engineering, and the treatment of articular cartilage and ligament was ignored in this model. The mechanical responses of the three models, i.e., the healthy knee joint, the knee joint with V-shape medial meniscal tears, the knee joint with longitudinal meniscal tears under axial loading were analyzed and compared. Results Under axial loading, the healthy knee joint would transfer the majority of the compressive stress loads, which were mainly concentrated in the lateral side of the middle part of the meniscus, and the maximum contact pressure appeared in the rear area of the middle part of the meniscus. When the meniscus was torn, the maximum stress appeared at the periphery of the tear, and the contact stress distribution of the meniscus was significantly changed due to the presence of the tear. Conclusions The meniscal tears have a significant influence on the stress distribution and peak stress of the knee joint. According to the shape of the meniscus, the doctor can determine the position of the stress concentration in the meniscus, and to determine the most important point in the treatment of the meniscus tear.

Objective To understand the current status of iodine nutrition among the community residents to compare the level of iodine nutrition in different areas and groups of populations in Zhejiang province.Methods Stratified cluster sampling method was adopted and residents from twenty-two communities in Zhejiang province were selected.A cross-sectional survey was conducted,using questionnaires,laboratory tests,on urinary iodine,water iodine and the concentration of the iodine in salt,which had played positive roles in the calculation of the level of iodine nutrition.Results Results of the iodine nutrition in this cross-sectional survey were as follows:the median water iodine and salt iodine of Zhejiang were 2.42 μg/L and 28.8 mg/kg,respectively.The coverage of iodized salts was 79.54％,with the ingesting rate of qualified iodized-salt as 76.65％ and the median content of urinary iodine in the population of Zhejiang was 161 μg/L.The average iodine content among pregnant women was 138 μg/L,with the percentage of samples less than 100 μg/L as 25.92％,more than 300 μg/L as 15.30％.The proportions of iodine intake through water,salt and other foods were 1.70％,76.41％ and 21.89％,respectively.Conclusion The status of iodine nutrition in Zhejiang province in general seemed to be appropriate,but the level of iodine nutrition in pregnant women was less than the requirement,which should call for attention.