BACKGROUND:Whether activating transcription factor 7 interacting protein(Atf7ip)is involved in the regulation in osteogenic differentiation is still controversial,and studying its impact on osteogenic differentiation and its specific mechanisms is of great significance. OBJECTIVE:To investigate the effect of Atf7ip on bone morphogenetic protein 2 promoting osteogenic differentiation of mouse embryonic osteoblast precursor cells(MC3T3-E1). METHODS:MC3T3-E1 cells cultured in vitro were divided into three groups:normal group,interference group(NC-siRNA group,Atf7ip-siRNA group),and high expression group(CMV-VC group and CMV-Atf7ip group),and were transfected for 24 hours,and then treated with 200 ng/mL bone morphogenetic protein 2 for 0,12,24,and 48 hours,respectively.qRT-PCR was used to detect the mRNA expression levels of Atf7ip,alkaline phosphatase,osteocalcin,type I collagen α1 in the cells of each group.Western blot assay was used to detect the protein expression of osteogenic differentiation markers Sp7 and Runx2,and the expression of Atf7ip binding molecule SETDB1,histone H3 and H3K9me3.Alkaline phosphatase activity was detected by alkaline phosphatase staining. RESULTS AND CONCLUSION:(1)With the increase of bone morphogenetic protein 2 treatment time,the protein and mRNA expression of Atf7ip decreased,while the protein expression of Sp7,Runx2 and the mRNA expression of osteocalcin and alkaline phosphatase increased significantly(P<0.05).There was no significant change in the protein expression of Atf7ip binding molecule SETDB1.(2)Compared with the NC-siRNA group,the protein expression of Sp7,Runx2 and the mRNA expression of osteocalcin and type I collagen α1 were significantly up-regulated(P<0.05),and alkaline phosphatase activity was significantly enhanced;and H3K9 methylation significantly decreased in the Atf7ip-siRNA group(P<0.05).(3)Compared with the CMV-VC group,the protein expression of Sp7 and Runx,as well as mRNA expression of osteocalcin,alkaline phosphatase,and type I collagen α1 was significantly downregulated(P<0.05),and the alkaline phosphatase activity was significantly reduced in the CMV-Atf7ip group,while the H3K9 methylation protein in the CMV-Atf7ip group was significantly upregulated compared to the control group(P<0.05).(4)In conclusion,Atf7ip expression was decreased during bone morphogenetic protein 2-induced osteogenic differentiation of MC3T3-E1,and osteogenic differentiation was significantly increased after knockdown of Atf7ip.Overexpression of Atf7ip significantly weakened osteogenic differentiation,indicating that Atf7ip is a negative regulatory factor of bone morphogenetic protein 2 promoting osteogenic differentiation of MC3T3-E1 cells.

Objective:To investigate the current situation of diet management in patients with colorectal cancer after stent-based diverting technique, and to provide basis for formulating relevant nursing intervention strategies.Methods:Objective sampling method was used to conduct semi-structured interviews on 15 patients who underwent stent-based diverting technique for colorectal cancer and had the bypass tube removed from Sir Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University from March to July 2023. The interview outline was established based on information-motivation-behavioral skills(IMB) model, and the data were analyzed, summarized and extracted by Colaizzi 7-step analysis method.Results:There were 10 males and 5 females, aged 34-76 years old. According to the three elements of the IMB model, the current situation of diet management was summarized into nine themes. The information included the difficulty in obtaining effective diet guidance information, the lack of specific diet guidance content, the need for individualized diet information guidance mode, and the poor continuity of information exchange after discharge. The motivations included ignoring the importance of diet management, dislike the taste of oral nutritional preparations, and weak support from family members. Behavioral skills include inadequate tube care skills and lack of oral nutrition preparation skills.Conclusions:There are many problems in the diet management of patients after colorectal cancer stent-based diverting technique. Medical staff should optimize the diet education information of colorectal cancer patients after surgery, provide multi-level, multi-time and multi-form continuous care, mobilize the active participation of family members, improve the motivation of patients′ diet management, refine the nursing process of the bypass tube, strengthen the application guidance of oral nutrition preparation skills, and improve patients′ diet management ability.

Objective To investigate the food preferences and explore the potential association between dietary knowledge and food preferences in residents aged 18 and over in China,so as to provide a basis for promoting healthy diets.Methods The latent class analysis was carried out with the 2015 cross-sectional data of China health and nutrition survey to categorize the food preferences among 8 783 residents aged 18 and over.Multinomial Logistic regression was adopted to assess the association between and dietary knowledge and food preferences.Results The food preferences of the residents aged 18 and over in China were classified into preference for less vegetable(3.28%),lack of preference(11.20%),diverse preferences(4.19%),and preference for healthy diets(81.33%).The proportion of the adults with dietary knowledge was 36.87%(3 238/8 783).The dietary knowledge varied in the adults with different food preferences(all P<0.001).After adjusting for gender,age,urban and rural distribution,education background,and annual household income,for each point increase in the dietary knowledge score,there was an estimated reduction of 22% in the probability of preferring less vegetables(OR=0.78,95%CI=0.76-0.80, P<0.001),13% in the probability of lacking preference(OR=0.87,95%CI=0.86-0.89, P<0.001),and 3% in the probability of having diverse preferences(OR=0.97,95%CI=0.94-1.00, P=0.030).Compared with those lacking dietary knowledge,the individuals with dietary knowledge had a 77% less probability of preferring less vegetables(OR=0.23,95%CI=0.16-0.32, P<0.001),a 55% less probability of lacking preference(OR=0.45,95%CI=0.39-0.53, P<0.001),and a 23% less probability of having diverse preferences(OR=0.77,95%CI=0.61-0.96, P=0.023).Conclusions The residents aged 18 and over in China presented four food preferences,including preference for less vegetables,lack of preference,diverse preferences,and preference for healthy diets,the last of which had the highest proportion.The individuals with lower levels of dietary knowledge have higher probability of preferring unhealthy food.
Adult ; Humans ; Adolescent ; Food Preferences ; Latent Class Analysis ; Cross-Sectional Studies ; Diet ; Nutrition Surveys ; China

Objective To compare the consistency of quantitative ultrasound(QUS)and dual-energy X-ray absorptiometry(DXA)in measuring bone mineral density(BMD)of adults aged 18-40 years in Guangzhou and evaluate the diagnostic value of QUS for identifying low bone mass.Methods DXA was employed to measure the BMD and QUS to measure the speed of sound(SOS)in 731 participants.The Bland-Altman analysis was performed to evaluate the consistency of Z scores between SOS and BMD.With the BMD Z ≤-2.00 as the diagnostic criterion for low bone mass,the receiver operating characteristics curve of QUS was established,and the area under the curve(AUC)and the sensitivity,specificity,and correct diagnostic index for the optimal cut-off of SOS Z score were calculated.Results The results of Bland-Altman analysis showed that the mean differences in the Z scores of SOS and BMD in males and females were 1.27(-0.94 to 3.47)and 0.93(-1.33 to 3.18),respectively.The AUC of SOS Z score in the diagnosis of low bone mass in males and females was 0.734(95%CI=0.380-0.788)and 0.679(95%CI=0.625-0.732),respectively.In males,the optimal cut-off of SOS Z score for low bone mass was -0.35,with the sensitivity,specificity,and correct diagnostic index of 64.1%,68.6%,and 0.327,respectively.In females,the optimal cut-off value of SOS Z scores for low bone mass was -1.14,with the sensitivity,specificity,and correct index of 73.9%,54.8%,and 0.285,respectively.Conclusion QUS and DXA show poor consistency in the diagnosis of BMD in the adults aged 18-40 years in Guangzhou,while QUS demonstrates an acceptable value in identifying low bone mass.
Male ; Female ; Adult ; Humans ; Absorptiometry, Photon/methods* ; Bone Density ; Ultrasonography ; Bone and Bones ; ROC Curve ; Sensitivity and Specificity

Objective: To investigate the prevalence of video display terminal syndrome (VDT) among medical students in university, and to explore the correlation between VDT syndrome and depressive symptoms, so as to provide theoretical guidance for promoting college students mental health. Methods: A total of 3 265 freshmen and juniors in the Department of Medicine of Nanchang University were surveyed with census method in November 2019 to collect information regarding general information, symptoms related to VDT syndrome, depression status. Results: In the valid questionnaire, the detection rate of VDT syndrome among college students was 33.3%, and the detection rates of VDT syndrome varied significantly by sex and clinical major( χ 2=6.45, 18.82 , P <0.05); The detection rate of depressive symptoms was 54.6%. One way ANOVA showed that there was significant differences in VDT syndrome status between those with and without depression symptoms ( χ 2=63.88, P < 0.01 ). Multivariate Logistic regression showed that VDT syndrome could increase the risk of detecting depression ( OR=1.84, 95%CI=1.58-2.14, P <0.01). Conclusion VDT syndrome has a high detection rate in college medical students and is a risk factor for depression in medical students. Society and schools should pay attention to health education on the rational use of video terminals for medical students, and take corresponding measures to intervene, so as to improve the physical and mental health of medical students.

Objective:To detect serum levels of vitamin A (Vit A), vitamin D(Vit D)25-hydroxy vitamin D[25-(OH)D] and vitamin E(Vit E) in children aged 0-6 years in Tibetan Plateau of Garzi Prefecture, thus providing references for physical examinations and prevention of 4 key diseases (rickets, malnutrition anemia, pneumonia and diarrhea) in children in plateau areas by relevant government departments.Methods:A total of 2 122 children who participated in physical examination in 12 townships of Xiangcheng County and 14 townships of Daocheng County, Garzi Tibetan Autonomous Prefecture, Sichuan Province from April 2017 to April 2019 with 0-6 years old were recruited for surveying physical measurements and collection of venous blood.Serum Vit A and Vit E levels were detected by high performance liquid chromatography.Serum levels of 25-(OH)D were detected by high performance liquid chromatography tandem mass spectrometry.The relationship between Vit A, Vit E and 25-(OH)D levels with the gender, age, seasonal change and altitude was analyzed.Results:The serum Vit A level, subclinical Vit A deficiency rate and marginal vitamin A deficiency rate were(1.05±0.27) μmol/L, 8.15%(173/2 122 cases) and 45.99%(976/2 122 cases), respectively in 2 122 children with 0-6 years old.There were significant differences in the serum Vit A level, the subclinical Vit A deficiency rate and the marginal vitamin A deficiency rate in children with different ages, seasons and altitudes (all P<0.05). The serum level of 25-(OH)D and 25-(OH)D deficiency rate insufficient rate were (24.65±6.45) ng/L, 6.03%(128/2 122 cases) and 16.59%(352/2 122 cases), respectively.There were significant differences in the serum level of 25-(OH)D, 25-(OH)D deficiency rate and 25-(OH)D insufficient rate in children with different ages and seasons (all P<0.05). The mean serum Vit E level, Vit E deficiency rate and Vit E insufficient rate were (7.81±1.74) mg/L, 2.78%(59/2 122 cases) and 29.59%(628/2 122 cases), respectively.There were significant differences in serum Vit E level, Vit E deficiency rate and Vit E insufficient rate in children with different ages and seasons (all P<0.05). The mean serum levels of Vit A and Vit D remained the lowest before the age of 1 year, and their deficiencies at this age were the most significant.The mean serum level of Vit E remained the lowest in >1-2 years old, and its deficiency and insufficient at this age were the most significant.Vit A, D and E levels were significantly affected by seasonal changes, which were significantly higher in the summer than in the spring, autumn and winter.In addition, Vit A and 25-(OH)D were significantly affected by the altitude, which were the lowest above 4 km altitude. Conclusions:The overall serum levels of Vit A, 25-(OH) D and E in children with 0-6 years old in Tibetan Plateau areas of Ganzi Prefecture are lower than those in plain areas.Vit A, 25-(OH) D and Vit E levels significantly differed in the age, season and altitude, which are related to the lack of local resources, insufficient maternal nutrition during pregnancy and insufficient intake after birth, as well as temperature and light caused by changes in local seasons and altitude.Therefore, it is necessary to make reasonable supplements during pregnancy to prevent vitamin deficiency.

Soil microorganisms are one of the important biological indictors of soil quality and can reflct the comprehensive ecological environment characteristics of the soil. The research of soil microbial diversity is the key to know the ecological functions and balance with soil. In this paper, high-throughput sequencing on PCR-amplified 16 S rRNA gene V3-V4 fragments was used to determine the bacterial diversity in rhizosphere soil of A. macrocephala under the treatment with BZJN1 or streptoprofen. The results showed that there were no significant differences of the bacteria in A. macrocephala rhizosphere soil of the streptoprofen treatment group and the biocontrol BZJN1 treatment group. All the soil bacteria was classified into 25 categories,67 classes, 108 orders, 167 families and 271 generas, except some unidentified bacteria. Proteobacteria(30.7%-34.8%) was the dominant phylum, of which Alphaproteobacteria(16.8%-18.5%) was the dominant subgroup. Compared with the control group, the relative abundance of multiple phylums bacteria in the rhizosphere soil of A. macrocephala was significantly changed in the streptoprofen treatment group and the biocontrol BZJN1 treatment group. In addition, RDA analysis showed that there was connection with different environmental factors and microbial communities. The abundance of the three genera in the rhizosphere soil of A. macrocephala was significantly positively correlated with Invertase, Urease and AP. PICRUSt function prediction results showed that BZNJ1 could enhance some bacterial functions and promote the plant growth. Biocontrol is a new type of green and safety control pest method. BZNJ1 significantly enhances some bacterial functions on the basis of effectively preventing root rot of A. macrocephala and promoting plant growth, and has no significant effect on the soil bacterial community structure. All the results can provide theoretical support for popularization of BZNJ1.
Atractylodes ; Bacteria ; Rhizosphere ; Soil ; Soil Microbiology

OBJECTIVETo investigate the prognostic value of morphology and Hans classification in diffuse large B cell lymphoma（DLBCL）.

METHODSClinical data of 249 patients diagnosed with DLBCL in our hospital and Hangzhou Xixi hospital during Jan 2006 to Dec 2016 were analyzed retrospectively. These patients were classified into 3 groups: immunoblastic variant（IB） group, centroblastic variant（CB） group and others group according to the cell morphology. And DLBCL was also divided into GCB（germinal center B-cell-like）or non-GCB（non-germinal center B-cell-like） group by analyzing the expression of CD10, BCL6 and MUM1 (GCB: CD10 ,BCL6,MUM1/CD10,BCL6,MUM1；non-GCB：CD10,BCL6,MUM1/CD10,BCL6,MUM1).

RESULTSThe univariate analysis displayed that the age，LDH level，IPI，IB，non-GCB，B-symptoms and rituximab all could influence the OS and EFS, the CR rate of CB subtype patients was significantly higher than that of the patients with IB subtype （68.3% vs 38.9%)(P=0.02）. IB subtype was the in dependent prognostic factor for both EFS and OS in the whole study. In multivariate analysis, IPI and IB were the independent prognostic factors for OS and EFS. IB subtype was also an independent prognostic factor in EFS and OS with or without rituximab. The expression of BCL2 and BCL6 was related with prognosis in R-CHOP, but not in CHOP treated patients. Other markers (CD5, CD10, IRF4/MUM1, HLA-DR and Ki-67 proliferation index) were not of the significant prognostic value for DLBCL. When accepted rituximab, the GCB and non-GCB were not different significantly for prognosis. However, the non-GCB group showed a poor prognosis without using rituximab （EFS P=0.020；OS P=0.020）. Multivariate Cox models showed that OS and EFS were not significantly different between GCB and non-GCB group, however, the IB subtype had a very significantly poor prognosis in OS and EFS (P=0.001, P=0.002). When the analysis was restricted to DLBCL with CB morphology only, no prognostic value was observed in Hans classification.

CONCLUSIONThe subtype of immunoblast is a major risk factor in patients treated with CHOP or R-CHOP. There is a significant association between the Hans classification and the morphologic subclassification. Results of this study have supplemented the data for the prognostic factor of DLBCL and demonstrated that the cytomorphologic diagnosis can be reproducible.

Antineoplastic Combined Chemotherapy Protocols ; Cyclophosphamide ; Doxorubicin ; Humans ; Immunohistochemistry ; Lymphoma, Large B-Cell, Diffuse ; Prognosis ; Proportional Hazards Models ; Retrospective Studies ; Rituximab

Objective:To explore the moderating effect of emotional regulation strategies between maladaptive perfectionism and suicidal risk in college students.Methods:Totally 1084 college students[mean age(19 ± 1)years old] in Guangdong were surveyed with the maladaptive subscale of the Chinese version of Frost Multidimensional Perfectionism Scale(CFMPS,including concern over mistakes,parental criticism and doubts about actions),Emotion regulation Scale(ERS,including cognitive reappraisal and expressive suppression),and the Suicide Behaviors Questionnaire-Revised(SBQ-R).Results:The SBQ-R scores were positively correlated with the scores of expressive suppression,maladaptive perfectionism,concern over mistakes,parental criticism and doubts about actions(r =0.14 -0.28,Ps ＜0.01).SBQ-R scores were negatively correlated with the scores of cognitive reappraisal(r =-0.19,P ＜0.01).Maladaptive perfectionism positively predicated suicidal risk(β =0.39,P ＜ 0.001),cognitive reappraisal and the interaction between cognitive reappraisal and maladaptive perfectionism negatively predicated suicidal risk(β =-0.17,-0.14,Ps ＜0.001).Conclusion:It suggests that college students who have higher level of maladaptive perfectionism tend to have higher suicidal risk,and cognitive reappraisal may moderate the relationship between maladaptive perfectionism and suicidal risk.

To evaluate the efficacy and safety associated with anti-hypoxia effect and establish the quality standard for Brassicea Radix extract, the investigations of acute toxicity and subacute toxicity were carried out to preliminarily appraise the toxicity, and the models of normal pressure hypoxia, acute cerebral ischemia and sodium nitrite poisoning in mice were used to evaluate the effect of enhancing anoxia endurance. Then according to the methods described in the Appendix of Chinese Pharmacopoeia (2010 edition), the sulfuric acid-phenol method was applied to determine the content of polysaccharide, and the water, ash and insoluble matter in water inspections were carried out and the control medicinal herb was identified with the samples by qualitative TLC. The results indicated that ① the toxic effects (LD₅₀) of mice was 56.73 g•kg⁻¹ by oral administration of Brassicea Radix extract, while Dm and Dn were respective 86.80 g•kg•d⁻¹ and 35.55 g•kg•d⁻¹;②the determined effective dosage of Brassicea Radix extract which could enhance anoxia endurance was 0.388 g•kg⁻¹•d⁻¹; ③ the methods of TLC and the content of polysaccharide were established. The method of quality control has been recorded in Sichuan Province Standard for Tibetan Medicine, which is reliable, accurate and simple, with good reproducibility. Meanwhile, given the prominent effect on anti-hypoxia and good safety, it provided important basis for clinic safe and effective usage and the development of health products.