Objective To explore the effects of different body positions at the expiratory phase thinsection multi-slice spiral CT on the diagnosis of pulmonary air trapping after allogeneic hematopoietic stem cell transplantation(allo-HSCT).Methods Thirty-one allo-HSCT patients underwent the expiratory phase low-dose MSCT lung scanning at supine and prone positions to detect whether they have air trapping lesion,the volume percent of air trapping region (CT value ≤-700 HU at expiratory phase) against the whole lung was measured by using GE workstation after grading.Statistical analysis on lesion detection rate was performed with McNemar test and volume percent with rank sum test.Results Air trapping regions were observed in 8 patients (25.8％,8/31) who performed CT scan at the supine position,while 15 cases (48.4％,15/31)were positive for prone position CT scan.Seven cases showed positive results at both body positions.Statistical significance in the positive detection rate at supine and prone positions was found (x2 =4.00,P =0.039).The volume fraction of the two positions was 13 for supine position and 21 for prone position with statistical significance (Z =-3.37,P =0.001).Sensitivity at prone position CT scan to detect air trapping was much higher than that at supine position CT scan.Conclusion For allo-HSCT patients with chronic rejection reaction,performing expiratory phase thin-section CT scan and prone position scan can not only improve the detection rate of lung forepart lesions,but also preliminarily evaluate the severity of the air trapping,which can provide a basis for the early diagnosis and treatment in clinics.

Objective To investigate the alterations of Treg cells , Th17 cells and related cyto-kines in peripheral blood of patients during the early stage of hand-foot-mouth disease ( HFMD) .Methods Flow cytometry was performed to analyze the percentages of Treg cells ( CD4+CD25+Foxp3 T cells) and Th17 cells ( CD3+CD8-IL-17+T cells) in peripheral blood samples collected from 49 patients with severe HFMD , 26 patients with common HFMD and 30 healthy children.The levels of IL-6, IL-10, IL-17, IL-23 and TGF-β1 in serum samples were measured by ELISA .Results The percentages of Treg cells , ratios of Treg/Th17 cells, serum levels of TGF-β1 and IL-10 in patients with HFMD were significantly decreased as compared with those of control group (F=5.580, 6.205, 0.000, 0.014, respectively, P<0.05).Patients with se-vere HFMD showed a significantly increased Th17 cells (F=3.189 P<0.05) and a tendency of enhanced IL-17 expression , but no significant differences with the levels of IL-17 were observed .No significant differ-ences with the expression of IL-23 in the patients among each group were detected (P>0.05).The levels of IL-6 in serum samples from severe disease group were obviously increased as compared with those of common HFMD group and control group (F=7.318, P<0.05).Conclusion The results of this study demonstrated that the levels of Treg , Th17 cells and some related cytokines were varied in peripheral blood of patients dur-ing the early stage of HFMD .Inflammatory responses were enhanced to promote anti-virus activities by sup-pressing Treg cells and stimulating Th17 cells.

Objective: To observe the effect of ethanol extract of Crataegus Pinnatifida Bge. Var. major N. E. Br. from Hei-longjiang province on hemodynamics of acute myocardial ischemia caused by ligation and platelet aggregation induced by isoproterenol. Methods:After the model establishment of acute myocardial ischemia by ligation in rats, the systolic blood pressure ( SBP) ,diastolic blood pressure ( DBP ) , heart rate ( HR ) , left ventricular systolic pressure ( LVSP ) , left ventricular end-diastolic pressure ( LV-EDP) , left ventricular peak systolic ( +) and diastolic ( -) rate ( ± dp ·dt max-1 ) were recorded. Meanwhile, the acute myocar-dial ischemia model induced by isoproterenol was established. The platelet aggregation was measured by a platelet aggregation instru-ment. Results:The ethanol extract of Crataegus Pinnatifida Bge. Var. major N. E. Br. from Heilongjiang province could significantly increase the SBP, DBP, LVSP, +dp · dtmax-1 and HR, and reduce LVEDP,-dp·dtmax-1 in high dose group with statistical sig-nificance (P<0. 05). The medium dose group had small impact on the DBP, while showed statistically significant effect on the other hemodynamic indices. The low dose group had statistically significant effect on the SBP, LVSP and ± dp·dtmax-1 (P<0. 05), while showed no notable effects on the other indices. The results of aggregation rate in 1 min and 5 min after the determination and the maxi-mum one in the high and medium dose groups showed that the ethanol extract could significantly inhibit the platelet aggregation with sta-tistical significance (P<0. 05). Conclusion:The ethanol extract of Crataegus Pinnatifida Bge. Var. major N. E. Br. can improve the blood flow of acute myocardial ischemia in rats and reduce platelet aggregation after ischemia.

BACKGROUND:The low oxygen environment after femoral fracture and cerebral trauma wil induce series of related cytokines expression, including hypoxia-inducible factor 1αand core binding factorα1, which play key roles in regulating bone healing. However, whether the accelerated bone healing is correlated with the expression of hypoxia-inducible factor 1αand core binding factorα1 is stil unknown.
OBJECTIVE:To construct rat models of brain injury, to compare the expression level of hypoxia-inducible factor 1αand core binding factorα1 in femoral fracture combined with cerebral trauma rats and simple femoral fracture rats, and to assess the influence of cerebral trauma on bone healing.
METHODS:Rats were randomly divided into blank group, simple femoral fracture group and femoral fracture combined with cerebral trauma group. At 1, 2, 3 and 5 weeks after modeling, rats were executed. Bone healing was evaluated using femoral fracture end X-ray score and hematoxylin and eosin staining at cal us tissues. Besides, the expression levels of hypoxia-inducible factor 1αand core binding factorα1 of three groups were determined with immunohistochemistry.
RESULTS AND CONCLUSION:Bone healing in the femoral fracture combined with cerebral trauma group was better than that of simple femoral fracture group. There was significant difference in the expression level of hypoxia-inducible factor 1αand core binding factorα1 between the simple femoral fracture group and femoral fracture combined with cerebral trauma group (P<0.05). At the same time, the level of simple femoral fracture group and femoral fracture combined with cerebral trauma group was significantly higher than that of blank group, and that in femoral fracture combined with cerebral trauma group was significantly higher than that of simple femoral fracture group (P<0.05). Results verified that the expression levels of hypoxia-inducible factor 1αand core binding factorα1 of rats with femoral fracture combined with cerebral trauma were significantly high, which may be the major reason why the bone healing was accelerated after fracture combined with brain injury.

Objective To study the effects of heat shock proetin 27(Hsp27)on the cardiac dysfunction induced by endotoxemia.Method All experiments were performed in the geriatric lab of the First Affiliated Hospital Of Nanjing Medical University,and in the Animal Model Center of Nanjing University.The genotyping of the transgenic mice with cardiac-specific overexpression of Hsp27(Hsp27 Tg)was assayed by PCR and the expression of Hsp27 was determined by western blot.Hsp27 Tg and its wild type littermates(WT)were intraperitoneally injected with LPS(10 mg/kg),and 24 hours later,cardiac function was measured by echocardiography(n=6/group).The accumulated mice mortality was recorded within 70 hous after intraperitoneal injection of LPS(20mg/kg)(n=37/WT,n=27/Hsp27Tg).The NF-kB activity for cardiac-tissue samples was analyzed by electrophoretic mobility shift assay(ENSA)and for cell culture samples by dual-reporter gene assay(n=4/group).The comparison of multiple groups was performed by one-way analysis of variance(ANOVA),and comparison of two groups was performed by Scheffe-test.Survival curves were analyzed by the log-rank test.P＜0.05 wns considered to be significant.Results The high expression of Hsp27 exhibited in myocardium of Hsp27 Tg,whereas not in myocardium of WT.LPS significantly reduced the cardiac function both in Hsp27 Tg and WT.However,compaled with LPS-treated WT,cardiac function was more significantly improved as evidenced by the increases of EF by 27.33%and FS by 37.09%(P＜0.01 or P＜0.05).Seventy hours after LPS injection,the mortality was 11.11% in Hsp27 Tg and 37.84% in WT.Compared with WT,the survival rate of Hsp27 Tg significantly increased(P＜0.05).The NF-kB activation was significantly inhibited by Hsp27(P＜0.01 or P＜0.05).Conclusions The high cardiac-specific expression of Hsp27 significantly inhibits cardiac dysfunction induced by endotoxemia,and at the same time improve the survival rate.The mechanism may be connected with Hsp27 downregulating NF-kB-activation induced by LPS.

BACKGROUND:Apoptosis of islet cel s is closely related to the long-term hyperglycemia-and hyperlipemia-induced injuries. OBJECTIVE:To observe the effect of Shizidaiping formula on the apoptosis and insulin secretion in MIN6 cel s under the high glucose and lipid environment, and to explore the protective effect of Shizidaiping formula and the related apoptosis mechanism. METHODS:MIN6 cel s were divided into normal, model, melbine, low-, medium-and high-dose Shizidaiping formula groups. The cel activity was examined by cel counting kit-8, the insulin secretion was measured by ELISA, the rate of apoptosis was measured by Annexin V-FITC&PI and the expression levels of MEK1/2, ERK1/2 and p-ERK1/2 were examined by western blot assay. RESULTS AND CONCLUSION:Shizidaiping formula significantly improved MIN6 cel activity under high glucose and lipid condition (P<0.05), decreased early cel apoptosis, increased the level of insulin stimulated by low glucose in cel supernatant (P<0.05), and improved the expression levels of MEK1/2, ERK1/2 and p-ERK1/2 (P<0.05). These results suggest that Shizidaiping formula can protect islet cel s from hyperglycemia and hyperlipemia damage by improving the activity of MIN6 cel s, reducing the insulin secretion and inhibiting the apoptosis of pancreaticβcel s in MIN6 cel s.

Objective To evaluate the impact of the percentage of residual blasts in bone marrow at the end of induction chemotherapy ( T1 ) or during myelosuppression phase (T2) on prognosis of de novo acute myeloid leukemia(AML) (non M3) in 105 cases.To refine AML risk-stratification by combining the percentage of residual blast cells (T1 or/and T2) with cytogenetic data based the South West Oncology Group (SWOG) criteria.Methods The data of 105 de novo AML ( non M3 ) patients hospitalized between January 1st 1999 and February 1st 2008 were retrospectively reviewed.Results were analyzed with SPSS15.0 software.Results ( 1 ) Patients were divided into two subgroups by a cutoff of 5% residual bone marrow blasts at T1 or 12 time point.Patients with percentage of residual bone marrow blast cells <5% had better complete remission (CR) rate,relapse-free survival (RFS) and overall survival (OS) than the patients with percentage ≥5% at T1 or T2.The percentage of residual bone marrow blast cells at T1 was correlated with that at T2.(2) The prognosis of patients with intermediate karyotypes with percentage < 5 % at T1 or T2 was similar to that of the patients with favorable karyotypes.The patients with intermediate karyotypes and percentage of residual bone marrow blasts ≥5% at TI or T2 are defined as a subgroup with prognosis similar to that of patients with unfavorable karyotypes.(3) COX regression analysis showed that the percentage of residual bone marrow blasts at T1 or T2 is an independent prognostic factor of AML.The percentage of residual bone marrow blasts at T1 may be more helpful in prognostification than that at T2.Conclusion AML patients with percentage of residual bone marrow blasts < 5% after induction chemotherapy ( T1 or T2) have better CR rate,RFS,OS than the patients with percentage ≥5% at the same time point.Combination of cytogenetics and percentage of residual bone marrow blasts at T1 or T2 is helpful to divide patients with intermediate karyotypes into two subgroups with different prognosis.Thus,a better decision of treatment strategy can be designed.

Objective:To analyze the trend of dementia mortality rate among individuals aged 60 to 94 years in China from 1982 to 2021.Methods:Utilizing data from the Global Burden of Disease Study 2021, the Joinpoint regression model was employed to analyze the trend in the dementia mortality rate among Chinese older adults from 1982 to 2021. The age-period-cohort analysis method was used to decompose the age effect, period effect and cohort effect of dementia mortality data in Chinese elderly people.Results:From 1982 to 2021, the crude mortality rate of dementia in elderly women aged 60-94 in China (133.67/100 000-214.02/100 000) was higher than that in men (70.92/100 000-119.70/100 000), and the age-standardized mortality rate of dementia in women (230.74/100 000-246.87/100 000) was also higher than that in men (132.88/100 000-140.19/100 000). The age-standardized mortality rate of dementia in both genders showed an N-shaped fluctuation trend. The average annual percent change (AAPC) of dementia mortality rate in elderly males aged 60-94 was 0.07% (95% CI: 0.01%-0.13%), and the AAPC of dementia mortality rate in elderly females was -0.01% (95% CI:-0.08%-0.07%). Age effect analysis showed that from the age of 60, the risk of dementia death in males and females increased with age, especially among elderly people aged 75-94 who experienced a rapid increase in dementia mortality rate. The period effect analysis showed that the overall risk of dementia death in elderly men and women aged 60-94 was decreasing, but it had increased from 2017 to 2021. The cohort effect analysis showed that the risk of dementia death was lower in later birth cohorts. Conclusion:From 1982 to 2021, the dementia mortality rate among Chinese older adults aged 60 to 94 years exhibited fluctuations. Particularly, there has been a notable rebound in recent years. Special attention should be directed towards female seniors and those aged 75 to 94 years.

Objective:To analyze the trend of dementia mortality rate among individuals aged 60 to 94 years in China from 1982 to 2021.Methods:Utilizing data from the Global Burden of Disease Study 2021, the Joinpoint regression model was employed to analyze the trend in the dementia mortality rate among Chinese older adults from 1982 to 2021. The age-period-cohort analysis method was used to decompose the age effect, period effect and cohort effect of dementia mortality data in Chinese elderly people.Results:From 1982 to 2021, the crude mortality rate of dementia in elderly women aged 60-94 in China (133.67/100 000-214.02/100 000) was higher than that in men (70.92/100 000-119.70/100 000), and the age-standardized mortality rate of dementia in women (230.74/100 000-246.87/100 000) was also higher than that in men (132.88/100 000-140.19/100 000). The age-standardized mortality rate of dementia in both genders showed an N-shaped fluctuation trend. The average annual percent change (AAPC) of dementia mortality rate in elderly males aged 60-94 was 0.07% (95% CI: 0.01%-0.13%), and the AAPC of dementia mortality rate in elderly females was -0.01% (95% CI:-0.08%-0.07%). Age effect analysis showed that from the age of 60, the risk of dementia death in males and females increased with age, especially among elderly people aged 75-94 who experienced a rapid increase in dementia mortality rate. The period effect analysis showed that the overall risk of dementia death in elderly men and women aged 60-94 was decreasing, but it had increased from 2017 to 2021. The cohort effect analysis showed that the risk of dementia death was lower in later birth cohorts. Conclusion:From 1982 to 2021, the dementia mortality rate among Chinese older adults aged 60 to 94 years exhibited fluctuations. Particularly, there has been a notable rebound in recent years. Special attention should be directed towards female seniors and those aged 75 to 94 years.

A transcriptional regulatory network for wild-type and ATP7B-knockout HepG2 cells exposed to copper was constructed by bioinformatics methods to explore the potential mechanism of key transcription factors in the pathogenesis of hepatolenticular degeneration. The differentially expressed genes (DEGs) for wild-type and ATP7B-knockout HepG2 cell lines without copper and exposed to copper were collected from the gene expression omnibus (GEO) database. Gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) enrichment analysis were performed for DEGs induced by copper. The key functional modules and genes were identified based on the protein-protein interaction (PPI) network. Moreover, the enrichment analysis of genes in functional modules was performed. Finally, a transcriptional regulatory network was constructed to screen the core transcription factors. A total of 1 034 genes, including 509 down-regulated genes and 525 up-regulated genes, were selected as DEGs. The up-regulated and down-regulated functional modules based on PPI network included 3 785 and 3 931 genes, respectively. Genes in key functional modules were enriched in cell-substrate junction, chromosomal region, spliceosomal complex and ribosome. They were involved in mRNA processing, histone modification, RNA splicing, regulation of DNA metabolic process, protein phosphorylation and other biological processes. Moreover, they were correlated to transcriptional coregulator activity, DNA-binding transcription factor binding, ubiquitin-like protein ligase binding and other molecular functions. KEGG analysis showed that genes in key functional modules were significantly enriched in hepatitis B, MAPK signaling pathway, cellular senescence and apoptosis, neurotrophin signaling pathway and pathways of neurodegeneration-multiple diseases. The transcriptional regulatory network contained 11 differentially expressed transcription factors and 96 DEGs. Among them, U2AF1, NFRKB, FUS, MAX, SRSF1, CEBPA and RXRA were the core transcription factors, which may facilitate the study of the biological function of relevant molecules in transcriptional regulation of hepatolenticular degeneration.
Humans ; Transcriptome ; Gene Expression Profiling/methods* ; Hepatolenticular Degeneration/genetics* ; Copper ; Gene Regulatory Networks ; Computational Biology/methods* ; Transcription Factors/genetics* ; DNA ; DNA-Binding Proteins/genetics* ; Serine-Arginine Splicing Factors/genetics*