Pregnancy management of hepatolenticular degeneration in pregnancy / 中国综合临床

Hepatolenticular degeneration (HLD) is Wilson's disease, which is an autosomal recessive inherited disease caused by gene abnormality and copper transport disorder in liver cells. The pregnancy of HLD patients is safe. During pregnancy, the treatment of eliminating copper should be continued, the dosage of drugs should be reduced according to the condition, and regular monitoring should be done. HLD patients with satisfactory copper control had better pregnancy outcomes than untreated HLD patients. The treatment during pregnancy should be individualized, and perinatal care should be coordinated by obstetrics, hepatology, liver transplantation, genetic counseling, pharmacy, anesthesiology, pediatrics and other disciplines.

Research progress of vitamin D and obstetric maternal and infant outcomes / 中国综合临床

Vitamin D is a fat soluble steroid derivative, which is very important to maintain human normal physiological function. It plays an important role in embryogenesis, bone development and calcium homeostasis. Vitamin D deficiency is widespread in the world, and the prevalence of vitamin D deficiency during pregnancy is also significantly increased, accompanied by adverse maternal and neonatal outcomes, such as gestational diabetes mellitus, preeclampsia, premature delivery, and low birth weight. At present, there is no consensus on whether vitamin D supplementation is helpful to improve the prognosis of mothers and infants, and whether vitamin D is the etiology or marker of adverse pregnancy outcome. This paper reviews the latest research progress on the relationship between vitamin D level during pregnancy and maternal and infant outcomes.

Performance verification of nucleic acid testing project based on ISO 15189 / 中国输血杂志

【Objective】 To explore the performance verification of NAT and its procedures for HBV DNA, HCV RNA and HIV RNA-1 using PCR-fluorescence via Cobas s201 automatic NAT system and supporting MPX V2.0 reagents that applied in the laboratories of blood stations, in order to satisfy ISO 15189 accreditation requirements and ensure the accuracy of NAT results. 【Methods】 Samples used in external quality assessment(EQA) of year 2020 were taken to verify the concordance, Performance evaluation panel and sensitivity verification panel of Roche second-generation NAT system were used to verify the sensitivity/ specificity and the lower limit of detection, respectively.And HBV DNA, HCV RNA and HIV RNA-1 quality control products were used to verify the anti-interference ability. 【Results】 The concordance rate of 40 EQA, samples was 100%. The sensitivity and specificity of Cobas s201 automatic NAT system and supporting MPX V2.0 reagents in detecting HBV DNA, HCV RNA and HIV RNA-1 were all 100%. The lower detection limit for HBV DNA, HCV RNA and HIV RNA-1 all met the requirements of reagent instructions. The yielding of HBV DNA, HCV RNA and HIV RNA-1 were affected little with hemolysis at 500 mg/dL but interfered seriously as lipemia reached 3 300 mg/dL. 【Conclusion】 The concordance rate, sensitivity, specificity and lower detection limit of the Cobas s201 fully-automatic NAT system and MPX V2.0 reagents by PCR-fluorescence method all met the requirements of reagent instructions. The verification of anti-interference ability demonstrated the requirements of ISO 15189 and the needs of blood station laboratories could be satisfied, and the detection methods and procedures can ensure the accuracy of NAT results.

Analysis of the prevalence of anemia and its influencing factors in the urban communities-dwelling elderly population in Beijing / 中华老年医学杂志

Objective:To analyze the prevalence of anemia and its influencing factors in the elderly population dwelling in urban communities in Beijing.Methods:A random cluster sampling method was adopted to select the elderly people of communities in Beijing, and cross-sectional research was conducted through questionnaire surveys, field tests and blood sample collection.The criteria for diagnosing anemia were from WHO standards, and the health evaluation indicators in the questionnaire survey included demographic data and eating habits, socio-economic information, information on enjoying health services, health and physical fitness and other information.Blood samples were drawn for routine blood tests and biochemical tests.Results:A total of 1 947 elderly people aged 65 years and above were investigated, including 789 males(40.5%)and 1 158 females(59.5%). Among the 1 947 survey subjects, 288 elderly people had anemia, with the prevalence of anemia of 14.79%(288/1 947). The prevalence of anemia was 16.35%(129/789)in males and 13.73%(159/1 158)in females.There was no statistically significant difference in the prevalence of anemia between male and female( χ2=2.760, P=0.097). Logistic regression analysis was used to analyze the factors affecting anemia.The results showed that the higher age( OR=1.055, P=0.000), the higher frequency of meat-eating( OR=1.353, P=0.046), the lower frequency of fruit-eating( OR=0.759, P=0.048), the worse health status of cohabitants( OR=0.757, P=0.037), the lower BMI( OR=0.905, P=0.001)and the lower exercise frequency( OR=0.769, P=0.012)were correlated to the higher anemia risk in the elderly population dwelling in urban communities in Beijing. Conclusions:The prevalence of anemia is relatively high in the elderly in Beijing communities.According to our findings, older people should reduce the frequency of eating meat, while ensuring nutritional intake, increase the intake of fruits and take appropriate exercises to reduce the prevalence of anemia.

Study on the relationship between acute stress disorder and symptom group in stroke patients with motor impairment / 中国综合临床

Objective:To explore the influence of symptom group of stroke patients with exercise disorder on acute stress disorder.Methods:Patients with stroke and motor impairment hospitalized in the Department of Neurology and surgery of North China University of technology from October 2018 to August 2019 were selected as the research objects.The general information of patients, brain injury subscale (BIS) and Stanford acute stress reaction questionnaire (SARSQ) were investigated by questionnaire.Results:A total of 324 patients with stroke and motor disorders were investigated.The demographic characteristics of education, age, degree of motor function, number of combined dysfunction and Activity Of Daily Living Scale(ADL) grade had effects on acute stress disorder, and the differences were statistically significant( P<0.05). The score of acute stress disorder in stroke patients with motor disorders was (99.60±13.69 ) points.From the highest to the lowest symptom group, the scores were obsessive symptom (11.35±2.71), depression (7.44±1.86), hostility (7.23±2.26), somatization (3.69±1.42) and psychosis (2.81±1.09). The results of correlation analysis showed that somatization, depression, obsessiveness, hostility and psychosis were positively correlated with the total score of acute stress disorder and the scores of each dimension ( r=0.164, 0.355, 0.329, 0.298, 0.279, all P<0.05), the symptoms were also positively correlated with all the dimensions of acute stress disorder(all P<0.05). Multiple linear regression analysis showed that age(Regression coefficient=7.682, 95% CI: 4.930-10.435, P<0.001), the number of combined dysfunction(Regression coefficient=3.937, 95% CI: 0.268-7.605, P=0.036), depression(Regression coefficient=1.662, 95% CI: 0.727-2.597, P=0.001) had influence on ASD of stroke patients. Conclusion:The level of acute stress disorder in stroke patients with motor impairment is on the high side, and the characteristics of symptom group are obvious, which has a positive correlation with acute stress disorder.Medical staff should pay attention to the characteristics of symptom group and acute stress reaction level of stroke patients with motor impairment, so as to provide targeted intervention strategies to avoid disease recurrence and improve the quality of life.

Evaluation of wearable health monitoring equipment for community-based management of hypertension / 中华健康管理学杂志

Objective@#To evalate the effectiveness and suitability of a wearable health monitoring device for community-based management of hypertension.@*Methods@#In December 2015, 400 patients with hypertension were enrolled from Beijing, Chaoyang. Subjects were divided into an experimental group (220 cases) and control group (180 cases), and baseline data were collected. The control group received follow-up with general planning while the experimental group received wearable health devices. Follow-up was performed three times using a questionnaire (April, August, and December 2016), and medical staff provided feedback and guidance. The experimental group was also classified according to risk factors and intervention measures were individually designed, and included monitor and medication compliance, self-management ability, and social support. Communication between patients and medical staff was recorded to form a case system. Evaluation indexes included accuracy and reliability, blood pressure management efficacy, behavior intervention efficacy, satisfaction, and disease burden. A t-test, non-parametric test, and chi-square test were used to compare the experimental and control groups before and after intervention.@*Results@#At 1-year follow-up, after correcting for differences in baseline information between the two groups, statistically significant differences in numerical indexes were observed for number of visits within 1 month [1(1) vs. 1(1), Z=5.42], payment within 1 month [85(141) yuan vs. 40(70) yuan, Z=-2.66], visiting time [20(20) min vs. 20(15) min, Z=-2.82], exercise times [4.79(2.24) times/week vs. 4.09(2.00) times/week, Z=9.27], medication compliance score [7.33(5.77) vs. 8.70(5.24), Z=6.86], satisfaction [9.27(0.08) vs. 8.88(0.10), Z=11.77], diastolic pressure [(78.93±0.56) mmHg vs. (81.32±0.61)mmHg, F=8.70] (1 mmHg=0.133 kPa), and body mass index [(25.55±0.27) kg/m2 vs. (27.74±0.43) kg/m2, F=-2.24]. In addition, classification indexes adjusted for normalized blood pressure and habitus were different between experimental and control groups (χ2=3.89, 8.38, P≤0.05). The equipment worked well, with performance rates of over 90% (90.9%, 97.3%, and 92.7%).@*Conclusion@#The wearable health monitoring equipment showed good stability and reliability, and was able to effectively support health management in patients with hypertension in the community. At the same time, the equipment can improve healthy lifestyle compliance and awareness or self-management of blood pressure. In this manner, the burden of disease is reduced and the quality of life is improved.

Burden status quo and influencing factors of main caregivers in stroke patients with home enteral nutrition / 重庆医学

Objective To investigate the burden status quo of caregivers in stroke patients with home enteral nutrition and to analyze the factors influencing the caregivers burden.Methods A total of 202 direct caregivers in stroke patients with enteral nutrition treatment during hospitalization period in this hospital and continued home enteral nutrition after discharge from hospital were collected as the study subjects.The Caregiver Burden Inventory,Self—Rating Anxiety Scale,Self—Rating Depression Scale,patients and caregivers general condition questionnaire were adopted to conduct the survey.The burden level status of caregivers and its related influencing factors were statistically analyzed.Results The results showed that the burden total score in 202 caregivers receiving the investigation was (50.17± 9.75) points.The univariate analysis results showed that that the age of caregivers,family income per capita level,whether caregivers having negative emotions (anxiety or depression),care time,NIHSS scores of patients and feeding mode burden score had statistical differences (P＜0.05).The multivariate analysis results showed that the care time of caregivers,feeding mode,accompanying anxietyor depression in caregivers,NIHSS scores of patients were the main influencing factors of caregivers burden(P＜0.05).Conclusion The caregivers have a great burden in caring the patients,which should arouse attention.

Pirh2 mediates the sensitivity of myeloma cells to bortezomib via canonical NF-κB signaling pathway

Clinical success of the proteasome inhibitor established bortezomib as one of the most effective drugs in treatment of multiple myeloma (MM). While survival benefit of bortezomib generated new treatment strategies, the primary and secondary resistance of MM cells to bortezomib remains a clinical concern. This study aimed to highlight the role of p53-induced RING-H2 (Pirh2) in the acquisition of bortezomib resistance in MM and to clarify the function and mechanism of action of Pirh2 in MM cell growth and resistance, thereby providing the basis for new therapeutic targets for MM. The proteasome inhibitor bortezomib has been established as one of the most effective drugs for treating MM. We demonstrated that bortezomib resistance in MM cells resulted from a reduction in Pirh2 protein levels. Pirh2 overexpression overcame bortezomib resistance and restored the sensitivity of myeloma cells to bortezomib, while a reduction in Pirh2 levels was correlated with bortezomib resistance. The levels of nuclear factor-kappaB (NF-κB) p65, pp65, pIKBa, and IKKa were higher in bortezomib-resistant cells than those in parental cells. Pirh2 overexpression reduced the levels of pIKBa and IKKa, while the knockdown of Pirh2 via short hairpin RNAs increased the expression of NF-κB p65, pIKBa, and IKKa. Therefore, Pirh2 suppressed the canonical NF-κB signaling pathway by inhibiting the phosphorylation and subsequent degradation of IKBa to overcome acquired bortezomib resistance in MM cells.

Association between hemoglobin level and health status in elderly people living in communities in Beijing / 中华老年医学杂志

Objective To investigate the correlation between hemoglobin level and health status of the elderly living in communities in Beijing.Methods A random cluster sampling method was used to select residents living in communities of Beijing city,and a cross-sectional study was carried out by questionnaires,scene testing and blood sample collection.WHO-formulated criteria were applied for diagnosing anemia.The health indicators in questionnaires included visual impairment,physical disability,decreased health,self-care,fatigue,anorexia,independent walking distance,exercise frequency,intelligence status and computing power.Results Complete information was obtained in a total of 1 948 elderly people,including 790 cases of male and 1 158 cases of female,with an average age of(73.9±6.1)years and a median age of 74 years(65-100).The mean level of hemoglobin in the 1 948 people was(135.65 ± 14.48) g/L,with (142.56 ± 15.56) g/L in male and (130.95 ± 11.53) g/L in female.Hemoglobin level was significantly lower in female than in men (t =54.739,P＜ 0.01).Hemoglobin level was decreased with aging,and negatively associated with appetite,physical strength,walk assistance,visual acuity and physical ability(r=-0.055,-0.067,-0.071,-0.114,-0.095;P =0.022,0.005,0.004,0.000,0.000),while positively associated with health status,activities in daily life,athletic ability,exercise frequency and intelligence (r =0.073,0.126,0.122,0.066,0.124;P =0.002,0.000,0.000,0.006,0.000).Conclusions The hemoglobin level of the elderly decreases with aging and is associated with health status and quality of life in the elderly,which should be taken care seriously.

Expression and significance of pepsin in lingual tonsil hypertrophy / 中华耳鼻咽喉头颈外科杂志

Objective@#To discuss the relationship between lingual tonsil hypertrophy and laryngopharyngeal reflux.@*Methods@#Ninety-two patients who received throat surgery in Nanfang Hospital between October 2015 and October 2016 were enrolled. Twenty-six healthy volunteers were recruited as normal controls. All participants were assessed with the reflux finding score(RFS) and the size of lingual tonsils were evaluated using a clinical grading system proposed by Friedman under electronic laryngoscope. The score of reflux symptom index(RSI), personal history and medical history were gathered. Biopsy specimens of lingual tonsils were taken from all participants for the immunohistochemical stain of pepsin.SPSS 19.0 software was used for statistical analysis.@*Results@#There were 46.2% (12/26) pepsin-positive and 53.8% (14/26) pepsin-negative volunteers in normal controls. There were 87.0% (80/92) pepsin-positive and 13.0% (12/92) pepsin-negative patients in study group. The severity of lingual tonsil hypertrophy and expression intensity of pepsin in patients were significantly higher in volunteers (Z=-3.636, Z=-5.273, P<0.01). The severity of lingual tonsil hypertrophy was positively associated with the pepsin level in patients (r=0.556, P<0.01). The patients with pepsin-positive expression showed significant correlation between lingual tonsil hypertrophy and the positive rate of RSI and RFS (r=0.258, r=0.225, P<0.05). Analysis of correlated factors indicated that lingual tonsil hypertrophy was associated with smoking (χ2=8.502, P<0.05).@*Conclusions@#The expression of pepsin can be detected in lingual tonsil tissues. The lingual tonsil hypertrophy is closely related to laryngopharyngeal reflux.

Preliminary construction of the tissue-engineered oral and maxillofacial vessel / 中国组织工程研究

BACKGROUND:Insufficient blood supply after major bone defects leads to osteocyte necrosis;therefore, the tissue-engineered bone cannot meet the clinical requirements. OBJECTIVE:To construct an artificial vessel using in vitro cultured rabbit bone marrow stromal stem cel s and human umbilical vein endothelial cel s combined with the rabbit aortic decel ularized vascular matrix. METHODS:Rabbit bone marrow stromal stem cel s were cultured by adherent method, human umbilical vein endothelial cel s were cultured in vitro and isolated, and rabbit aortic decel ularized vascular stent was prepared. The stent-cel composite was constructed, and its biocompatibility was observed under scanning electron microscope. There were three groups:blank control, control (bone marrow stromal stem cel-stent) and experimental (stent-cel composites) groups (n=10 per group), fol owed by implantation around the smal vessels. Three months later, the vascular samples were col ected for gross observation and hematoxylin-eosin staining. RESULTS AND CONCLUSION:Fibroblast-like cel clones were formed by adherent method, and were positive for CD44+and STRO-1+after climbing;calcified nodule formed in the ossification. Flow cytometry showed CD34+accounting for 43.83%, and visible VIII factor in the endothelial cel s. In the experimental group, endothelial cel s formed a single cel layer onto the scaffold under scanning electron microscope;the artificial vessel grew wel and tubular structure presented and eight angiod structures were found. Thin film-like vessels formed in the blank control group and there were only endothelial-like tissues in the control group. These results suggest that angiod structures can form after the stent-cel composite implantation, causing no immune reaction, but the artificial vessel is visible in absence of muscular layer.

Clinical analysis of patients with pleural effusion of unknown causes examined by flexi-rigid thoracoscopy (25 cases) / 中国内镜杂志

Objective To investigate the value of flexi-rigid thoracoscopy in pleural effusion of unknown causes and the correlation with CEA, TK1 and ADA. Methods The clinical data and results of CEA, TK1 and ADA of 25 patients were retrospective analyzed in our department from 2015 January to November 2015. These patients accepted the examination of flexi-rigid thoracoscopy with pleural effusion of unknown causes. Results In the 25 patients with pleural effusion of unknown causes, definite diagnosis was made in 22 cases (88.00 %), of which 9 cases were malignant pleural effusion (36.00 %), 11 cases were tuberculous pleural effusion (44.00 %), 2 cases were inflammatory pleural effusion (8.00 %), 3 cases were undetermined (12.00 %). The positive rate of TK1 and CEA in malignant group was significantly higher than that in the tuberculosis group and inflammatory group, the positive rate of ADA in the tuberculosis group was significantly higher than that in the malignant group and inflammatory group. Conclusion Flexi-rigid medical thoracoscopy examination is an effective and safe method for diagnosis of unexplained pleural effusion with high exact diagnosis rate, less trauma and less complication. Combination with CEA, TK1 and ADA are helpful to improve diagnostic rate of pleural effusion of unknown causes.

Synthesis, biological activity and molecular docking research of N-{(4-oxo-thiochroman-3-yl)phenyl-methyl}acetamide derivatives as α-glucosidase inhibitors / 药学学报

In order to develop potent antidiabetic agents that have inhibitory effect to a-glucosidase, twelve β-acetamido ketone derivatives such as N-{[(substituted-4-oxo-thiochroman-3-yl)phenyl]-methyl}acetamide are designed and synthesized through one-pot Dakin-West reaction. Their chemical structures are confirmed by 1H NMR, 13C NMR, IR and HR-MS. In vitro α-glucosidase inhibition assays of compounds 4a-41 were carried out using glucose oxidase method. The result indicated that most of them possess inhibitory activity in vitro. Compound 4k showed the most potent inhibitory activity with 87.3% inhibition of α-glucosidase at the concentration of 5.39 mmol x L(-1). The structure-activity relationship of these β-acetamido ketone derivatives was discussed preliminarily. Moreover, the molecular docking method was used to study the interaction mode of compound 4k and α-glucosidase. Our results will be helpful for designing of α-glucosidase inhibitors in the future.

Tendinopathy and the extracellular matrix：to deeply study the key proteins and enzymes in the bone-tendon junction / 中国组织工程研究

BACKGROUND:In recent years, research on tendinopathy is becoming a hot topic in the sports medicine and rehabilitation, and the extracelular matrix plays a considerable role in the occurrence, development and healing of tendinopathy. OBJECTIVE: To explore the relationship between tendinopathy and the extracelular matrix. METHODS: CNKI, VIP, CBM, Wanfang, PubMed and Embase were retrieved for articles related to colagen, protein, glycoprotein and matrix remodeling published since 2000. RESULTS AND CONCLUSION:After tendinopathy, there are obvious changes in colagen, proteoglycans, glycoprotein and related enzymes; and these changes also affect the reconstruction and repair of tendinopathy. Currently, most of researches focus on the tendon rather than the bone-tendon junction. This means that there are no in-depth studies on the correlation between many important proteins and tendinopathy, and the effects of exercise intervention.

Clinical characteristics of tinnitus complaint: an analysis of 453 patients / 临床耳鼻咽喉头颈外科杂志

OBJECTIVE@#To evaluate the clinical characteristics of tinnitus complaint.@*METHOD@#The information of 628 patients with subjective tinnitus was collected using questionnaires from October, 2013 to June, 2014. Among them, 453 cases were included in this study, whose quality of life and sleep were significantly affected. Then we elucidated the features of tinnitus, tinnitus incentives and systemic diseases and analyzed their relationship.@*RESULT@#The proportion of the patients complaint was highest in gruop ≤ 30 y. The patients with tinnitus complaint were more likely to have persistent tinnitus with higher loudness VAS scores than their counterparts. 65.4% of the total patients had at least one treatment (52.2% of patients can tolerate, and only 13. 2% can not tolerate). More patients had cranial Ming on the left than on the right ear. The proportion of patients with polyphony in bilateral tinnitus was higher than those with unilateral tinnitus (P < 0.05). Moreover, 59% patients had tinnitus inducing factors, and 44% patients had systemic comorbidities (The three most frequently involved systems were otolaryngologic, cardiovascular and digestive system). There was no significantly statistical difference of the tinnitus severity between patients with other systematic diseases and those without.@*CONCLUSION@#Patients with tinnitus complaint were younger in age (≤ 30 y) and more likely to have persistent tinnitus with higher loudness VAS scores Predisposing factors are closely associated with mental or physical trauma. The accompanied diseases can be classified by organ system.

The clinical efficacy of composite acoustic therapy in patients of sudden deafness with tinnitus / 临床耳鼻咽喉头颈外科杂志

OBJECTIVE@#To determine whether the composite acoustic therapy is effective to treat tinnitus in patients with sudden deafness and to explore the mechanisms.@*METHOD@#Ninety-six cases (96 ears) were divided into experimental group and control group, and all the patients underwent drug treatment. The patients in experimental group were given personalized composite acoustic therapy in the first 30 days, music therapy in next 31-90 days, however, the patients in control group were not given sound therapy. Additionally, pure tone audiogram, tinnitus pitch and loudness as well as questionnaires (including THI, VAS, and SAS) were conducted for each patient before treatment, at day 30 and day 90 posttreatment.@*RESULT@#Eighty-nine patients (n = 47 for experimental group and n = 42 for control group) completed the trial. The results of day 30 posttreatment showed there were no significant differences in VAS and hearing recovery rate between these two groups, but THI and SAS showed significant differences. The results of day 90 posttreatment showed significant differences in VAS (P < 0.05), THI (P < 0.01) and SAS (P < 0.01), and no significant difference of hearing recovery rate was detected. The most significant changes of VAS appeared in the first 30 days of treatment. The hearing and tinnitus recovery in experimental group were better for the first 30 days of treatment than for the next 31-90 days, and similar results were obtaind in control group. (P < 0.01).@*CONCLUSION@#Composite acoustic treatment combined with drug therapy can improve the tinnitus and anxiety symptoms of patients with sudden deafness, and the effect on hearing recovery still need to be confirmed in further studies.

In Vitro Dissolution Feature of Chuangxiong Powder / 中国中医药信息杂志

Objective To compare the dissolution of Chuangxiong powder in different medium and discuss the dissolution characteristics in vitro of Changxiong powder. Methods The paddle method was adopted, the UV spectrophotometric method was developed to determine the in vitro dissolution quantity of Changxiong powder in five medium (water, 0.1 mol/L hydrochloric acid, acetate buffer of pH 4.5, phosphate buffer of pH 6.8, phosphate buffer of pH 7.4) with ferulic acid as index, and evaluated by drawing the dissolution curve and using the similar factor method and Weibull model. Results The dissolution quantity of Changxiong oral powder in five medium was different. The dissolution quantity in water, 0.1 mol/L hydrochloric acid, acetate buffer of pH 4.5 and phosphate buffer of pH 6.8 was similar and fit Weibull model, but it mutated in phosphate buffer of pH 7.4 and reached the maximum amount at 30 min. Conclusion The dissolution quantity of Changxiong powder is gradually increasing and the time is shorted in the medium from acidic to neutral then to alkaline. Dissolution curve is similar in the acidic and neutral medium. Changxiong powder dissolves out fast and completely in the alkaline medium.

Relationship between non-alcoholic fatty liver disease and chronic metabolic diseases in primary school students / 临床儿科杂志

Objectives To investigate the prevalence of non-alcoholic fatty liver (NAFLD) disease and its correlation with chronic metabolic diseases in two primary school students in Shanghai. Methods One thousand ifve hundred and thirty-two 7-11 year-old students from two primary schools were enrolled in Septamber-October 2011. The anthropometric indices, blood pressure, screening for pseudoacanthosis nigricans and liver ultrasonography of all subjects were recorded. Results The overall prevalence of NAFLD, obesity, abdominal obesity, pseudoacanthosis nigricans, high systolic blood pressure and high diastolic blood pressure was 6.5%, 26.7%, 16.3%, 5.1%, 1.7%and 1.9%, respectively. The prevalence of NAFLD and abdomi-nal obesity in students of central urban area was signiifcantly higher than that in suburban area (P<0.01). The binary regression analysis revealed a signiifcant association between NAFLD in students with sex, age, obesity, abdominal obesity, pseudoacan-thosis nigricans and high systolic blood pressure (P<0.05). Conclusions NAFLD has close correlation with chronic metabolic disease in children. It is time to adopt prevention, detection and treatment in NAFLD children with symptoms of chronic meta-bolic diseases.

Biological properties of colon cancer spheroid cells cultured in serum-free medium / 中华消化外科杂志

Objective To obtain colon cancer spheroid cells from human colon cancer cell lines cultured in serum-free medium (SFM),and investigate the proliferative and migratory properties of colon cancer spheroid cells.Methods Human colon cancer cell lines HCT116 and HT29 were cultured in SFM,and then the generation of spheroid cells was observed.The expression of stem cell surface marker CD133 was detected by flow cytometry,and the proliferative and migratory properties of colon cancer spheroid cells were detected by cell counting kit-8 and Transwell migration assay,respectively.All data were analyzed by using the t test.Results Spheroid cells were obtained from colon cancer cell lines HCT116 and HT29 in SFM.The ratios of spheroid cells with positive expression of CD133 generated by HCT116 and HT29 were 75.44％ ± 11.41％ and 76.22％ ± 14.23％,respectively.Compared with original colon cancer cells cultured in serum supplemented medium,the number of HCT116 and HT29 spheroid cells with positive expression of CD133 was significantly greater (t =11.43,9.17,P ＜ 0.05 ),and the proliferative and migratory abilities were much stronger also.Conclusion Colon cancer spheroid cells cultured in SFM have higher positive expression of CD133 and stronger proliferative and migratory abilities,and it can be utilized as a feasible model for further studies of colonic stem cells.

Relationship between MTA1 expression and invasive and metastatic ability of cervical cancer cell / 中华妇产科杂志

ObjectiveTo investigate the relationship between metastasis-associated gene 1 ( MTA1 )expression and invasive and metastatic ability of cervical cancer cell. MethodsThree kinds of plasmids pcDNA3( control group), pcDNA3-MTA1 ( MTA1 group) and pSilencer3. 1-MTA1-siRNA ( MTA1-siRNAgroup) were transfected into human cervical cancer cell line CaSki cells. Reverse transcription (RT)-PCR and western blot were used to detected MTA1 mRNA and protein expressions. The effects of MTA1 expression on CaSki cell growth and proliferation, cell migration, adhesion and invasion, and cell cycles were tested by methyl thiazolyl tetrazolium (MTT), clone formation experiment, wound-healing assay, transwell assay, adhesion assay and flow cytometry, respectively. In animal experiment, three groups of cells were inoculated to BALB/c nude mouse subcutaneously to observe tumor formation ability. ResultsCompared with control group, MTA1 mRNA and protein were significantly overexpressed in MTA1 group, while MTA1-siRNA group showed lower MTA1 expression. Compared with control group, MTA1 group showed significantly accelerated cell growth; while MTA1-siRNA group showed decreased cell growth since the second day (P＜0. 05). Clone formation number in control, MTA1 and MTA1-siRNA group were 133 ±6, 169 ± 10 and 57 ±5,respectively. MTA1 group showed accelerated cell formation, while MTA1-siRNA group showed the reverse effect compared with that in control group(P ＜ 0. 05 ). At 24, 48 and 72 hours after wounding, the healing ability of MTA1-siRNA group significantly lagged behind that in the control group, while MTA1 group showed accelerated cell healing ability. The adhesion rate of control, MTA1 and MTA1-siRNA group were (69. 3 ± 3. 6) ％, ( 80. 4 ± 5. 6 ) ％ and ( 39. 2 ± 7.4 ) ％ separately at 90 minutes after cell seeding. In contrast with control group, MTA1 group promoted the adhesion of CaSki cell to matrigel matrix, while MTA1-siRNA group inhibited the adhesion process (P ＜0. 05 ). In the migration assay, the number of cells migrated to the bottom side of the membrane in control,MTA1 and MTA1-siRNA group were 153 ± 17,247 ± 38 and 82 ± 10, respectively. The number of cells in the invasion assay were 231 ± 19,354 ± 36 and 76 ± 7, respectively. Compared with the control group, MTA1 group significantly increased the migration and invasion ability, while MTA 1-siRNA group showed lower cell migration and invasion ability (P ＜ 0. 05 ). In cell cycle experiment, no significant differences of cell proportions including G1, S and G2 stage were found among three groups (P ＞ 0.05).In animal experiment, compared with control group,MTA1 group showed accelersted tumor formation and growth,whilethe MTA1-siRNA group showed the reverse effect ( P ＜ 0. 05 ). ConclusionsMTA1 may play its roles to promote cervical cancer cell invasion, migration, adhesion, as well as cell growth and colony formation, while RNA interference against MTA1 may decrease the malignant phenotypes. This study shows that it will be an effective beginning to explore metastasis mechanisms and cancer gene therapy strategy targeting MTA1 in cervical cancer.