Objective To review the serial CT findings of cryptogenic organizing pneumonia(COP)and semiquantitatively analyze the changes after corticosteroid therapy.Methods The clinical and radiological features of 13 patients with COP confirmed by pathology were retrospectively collected and analyzed.The lung lesions extent on CT scans was estimated using semi-quantitative method.Changes of overall disease extent were evaluated by comparing the initial CT images and the follow-up CT scans after corticosteroid therapy.Results CT images of all cases revealed diffuse and bilateral lesions,mainly located in lower zone,distributed as predominantly subpleural and(or)along the bronchovascular bundle.The two most common manifestations of lung abnormality on initial scans were ground-glass opacity(GGO)(13 cases)and consolidation(12 cases),the average areas of which were 13％ and 10％ respectively.The treatment with antibiotics was ineffective.After treatment with corticosteroid,the lesions resolved completely in 2 patients ; the disease was decreased in extent in 8 patients ; and the lesion showed no change in extent in one patient,while the disease progressed in extent in 2 patients on follow-up CT.The most common CT findings were GGO(10 cases)and reticulation(5 cases),followed by consolidation(4 cases),the average areas of which were 19％,2％ and 1％ respectively.Conclusion The CT features of the patients with COP are characteristic.The most lesions resolved or improved after corticosteroid therapy on follow-up CT scans.The estimation of disease extent with semi-quantitative method is helpful for the clinicians to evaluate the therapeutic effect.

Objective To investigate the dynamic changes of transcription profiles of mouse thymus gene expression in different times after 6 Gy γ-irradiation.Methods High-flux cDNA microarray technique was used irradiation,the numbers and types of differentially expressed genes were gradually decreased,for instance,the induced differential expression genes were involved in cell cycle,immunity and stress,apeptosis,signal transduction,transcription regulation,DNA synthesis and recombination,cystoskeleton,ion channel and transportation,metabolism,protein translation and synthesis,development and cell differentiation,etc.correlated cell cycle(3 up-regulating:Cyclin G,Anxal,Fgf1 and 2 down-regulating:Cdc2a,Cdc25b),5 genes correlated immune stress(4 up-regulating:IL-18,Casp1,IL-15,IL-7 and 1 down-regulating:Cd28),7 genes correlated apoptosis(4 up-regulating:Caspl,Anxal,Perp,IL-7 and 3 down-regulating:Pten,Api5 and Fas).Conclusions After 6 Gy irradiation,differentially expressed genes in mouse thymus is not only involved in many targets,levels and pathways,but also displayed an obvious difference in times.This reveals the regular pattern of differential expression genes in the process of injury and reconstitution in moderate dose irradiated mouse thymus.

Objective To investigate the clinical efficacy of pretreatment regimen containing idarubicin (IDA) in allogeneic hematopoietic stem cell transplantation (allo-HSCT) for high-risk refractory leukemia. Methods A total of 116 patients with high-risk refractory leukemia who received allo-HSCT treated with 7 types of IDA-containing pretreatment regimes were enrolled in this study. The implantation rate of 116 recipients was summed up. The 2-year overall survival (OS), 2-year disease free survival (DFS), cumulative recurrence rate, recurrent mortality, transplantation related mortality (TRM), cumulative incidence of acute graft-versus-host disease (aGVHD) and chronic graft-versus-host disease (cGVHD) were statistically analyzed by Kaplan-Meier survival curve. Results All 116 recipients successfully implanted. The median follow-up time was 28 (7-70) months. Among them, 64 recipients survived, the 2-year OS was 55.2%, 2-year DFS was 51.7%, 2-year recurrent mortality was 23.3% and 2-year TRM was 18.1%. Among 116 recipients, 72 cases suffered from aGVHD. The 2-year cumulative incidence rate of aGVHD was 62.1% including 20 cases of grade Ⅲ-Ⅳ aGVHD, the 2-year cumulative incidence rate was 17.2%. Among 116 recipients, 59 cases presented with cGVHD. The 2-year cumulative incidence rate was 55.4%, of which the 2-year cumulative incidence rate of extensive cGVHD was 14.7%. Among 116 recipients, 30 cases recurred with a 2-year cumulative recurrence rate of 25.9%. Conclusions IDA-containingpretreatment regime has high safety and effectiveness, and can be used as an effective pretreatment regime for transplantation preprocessing in patients with high-risk refractory leukemia.

Objective To investigate the effect of axial load test in Taylor spatial frame treatment of external fixation for tibia and fibula fractures.Methods A retrospective case-control study was conducted to analyze the clinical data of 36 patients with open fracture of tibia and fibula admitted to Tianjin Hospital from March 2015 to June 2017.There were 22 males and 14 females,aged 21-71 years[(46.1±14.2)years].All patients received Taylor spatial frame external fixation for tibia and fibula fracture within 1 week after injury.After operation,18 patients received axial load test(experiment group),and the other 18 did not(control group).When the value of axial load test was less than 5% in experiment group,the Taylor spatial frame was removed.The control group used traditional method to remove the Taylor spatial frame.Comparisons were made between the two groups in terms of treatment duration,total cost,re-fracture after Taylor spatial frame removal and incidence of stent-tract infection.Results All patients were followed up for 3-14 months with an average of 8.6 months.Compared with control group,the treatment duration[(36.17±11 .44)weeks vs.(44.50±9.16)weeks]and total cost[(93.7±7.9)thousand yuan vs.(120.1±10.6)thousand yuan]of experiment group were significantly lower(P＜0.05).In the experiment group,there was 0 patient with re-fracture and two patients with stent-tract infection,with the complication incidence of 11%,while there were two patients with re-fracture and three patients with stent-tract infection,with the complication incidence of 28% in the control group(P＞0.05).Conclusions After Taylor spatial frame external fixation for tibia and fibula fractures,regular axial load test can safely and timely guide the removal of Taylor spatial frame.It can reduce the treatment duration and cost compared with the traditional removal method,being safe and reliable.

Objective:To evaluate the effect of coronary microvascular dysfunction (CMD) on left atrial and ventricular function in patients with ischemia and non-obstructive coronary artery disease (INOCA) under the drug stress of regadenoson by speckle tracking imaging and left ventricular pressure-strain ring ultrasound technology.Methods:A total of 43 patients with INOCA who were admitted to the Department of Cardiology of the First Bethune Hospital of Jilin University from May 2022 to October 2023 were prospectively enrolled, and drug stress tests were performed. The coronary flow velocity reserve (CFVR) values were obtained by transthoracic Doppler echocardiography, and the INOCA patients with CFVR<2.0 were assigned to the CMD group ( n=24), and those with CFVR≥2.0 were assigned to the contrast group (CON group, n=19), and 20 healthy people without chest pain matched by clinical data were selected as the negative group (NEG group). The differences in general clinical data, routine echocardiography before and after stress, left atrial strain, and myocardial work parameters were compared between the groups. The correlation analysis of intra-group parameters was performed, and then the ROC curve was used to evaluate the diagnostic value of ultrasound parameters for INOCA. Results:Compared with the CON group and the NEG group, the ratio of early diastoic velocity E peak of mitral value orifice to the late diastoic velocity A peak(E/A) decreased and the ratio of early diastoic velocity E peak of mitral valve orifice to the early diastoic velocity e′ of the mitral valve annulus(E/e′) increased in the CMD group, and the differences were statistically signnificant (all P<0.05).There were statistically significant differences in left atrial strain parameters including left atrial strain reservoir (LASr), left atrial conduit strain (LAScd), left atrial contraction strain (LASct) between CON group and CMD group before and after stress (all P<0.05).However, there were no statistically significant differences between CON group and CMD group in myocardial work parameters including global longitudinal strain (GLS), peak strain dispersion (PSD), global work index (GWI), global constructive work (GCW), global wasted work (GWW), global work efficiency (GWE) at rest (all P>0.05), and there were significant differences only after stress (all P<0.05). E/e′ was negatively correlated with LASr and LAScd in the CMD group and CON group ( rs=-0.36, r=-0.31; all P<0.05), GLS was positively correlated with GWI, GCW, GWE( r=0.81, 0.61, 0.37; all P<0.05). GLS was positively correlated with GWI, GCW and GWE at stress state( r=0.66, 0.51, 0.52; all P<0.05), and negatively correlated with GWW ( rs=-0.39, P<0.05). PSD was positively correlated with GWW ( rs=0.30, P<0.05), and negatively correlated with GWI, GCW and GWE ( r=-0.46, -0.40, -0.38; all P<0.05). Univariate regression analysis showed that left atrial strain and myocardial work had good predictive values for CMD, and the predictive values of rest LASr and stress GLS were higher, with AUC values of 0.927 and 0.882, respectively. Conclusions:In patients with INOCA and CMD, the left atrial strain capacity decreases at both rest and stress state, and the myocardial work capacity decreases only under the stress. The changes in parameters of left atrial strain and myocardial work provide new ultrasound parameters and predictors for clinical evaluation of CMD.

Objective To investigate the influence of Leptin on the proliferation of peripheral blood regulatory T cells in patients with rheumatoid arthritis (RA).Methods Peripheral blood mononuclear cells (PBMCs) were isolated from 6 RA patients.RA PBMCs were stimulated with anti-CD3 (3 μg/ml)/anti-CD28(2 μg/ml) antibody for 72 h,anti-CD3 (3 μg/ml)/anti-CD28 (2 μg/ml) antibody and Leptin (100 ng/ml) for 72 h,anti-CD3 (3 μg/ml)/anti-CD28 (2 μg/ml) antibody and Leptin (100 ng/ml) and interleukin (IL)-6 receptor antagonist (0.5 μg/ml) for 72 h.Regulatory T cells (Treg) were detected by flow cetometry.IL-6 level and TGF-βlevels in the supernatants of RA PBMCs culture were detected by Enzyme linked immunosorbent assay(ELISA).Statistical analysis between the two groups were performed by Wilcoxon Signed Rank Test.Results ①) Our results suggested that compared to the control group,RA PBMCs were stimulated by leptin for 72 h had lower percentage of Treg[13.6(11.6,14.8)％ vs 9.8(7.0,10.0)％,Z=-2.201,P＜0.05];Compared to the control group,the level of IL-6 and TGF-β were elevated when RA PBMCs treated with leptin for 72 h [548.9(508.6,608.4)ng/L vs 631.8(538.4,672.6) ng/L,Z=-1.992,P＜0.05;1175.0(1 045.4,1 373.1) ng/L vs 1 580.2(1 315.3,1 906.5) ng/L,Z=-2.201,P＜0.05];② The percentage of Peripheral Treg was increased [9.8(7.0,10.0)％ vs 12.3(9.7,13.8)％,Z=-1.997,P＜0.05] and the level of IL-6 was decreased [631.8(538.4,672.6) ng/L vs 522.7(339.3,593.3) ng/L,Z=-2.201,P＜0.05] when RA PBMCs was stimulated with IL-6 receptor antagonist and anti-CD3/anti-CD28 antibody and Leptin for 72 h.Conclusion The study has shown that Leptin can down-regulate the percentage of RA peripheral blood Treg via increasing IL-6 secretion.

OBJECTIVE To investigate the mechanism of anti-colorectal cancer growth and metastasis-related effects of Astraga-lus mongholicus Bunge-Curcuma aromatica-Paridis Rhizoma(Qi-Zhu-Zao)pairing through PERK/eIF2α/ATF4 signaling pathway mediating endoplasmic reticulum stress.METHODS Twenty-four BALB/c male mice were randomly divided into sham-operated group,model group,5-FU(5-fluorouracil)group(25 mg·kg-1),and Qi-Zhu-Zao high dose group(5.85 g·kg-1),Qi-Zhu-Zao low dose group(2.925 g·kg-1)(n=6)to construct a mouse model of colorectal cancer in situ transplantation tumor,and the inter-vention effect of Qi-Zhu-Zao combination on tumor growth was assessed by the change of tumor volume size after 15 days of administra-tion;the intervention effect of Qi-Zhu-Zao combination on tumor growth was assessed by H&E.Pathological staining was used to eval-uate the effect of Qi-Zhu-Zao combination on the liver and tumor tissues of mice.The changes of MDA,SOD and GSH-Px levels were detected by enzyme-linked immunosorbent assay(ELISA);the expression of PERK/eIF2α/ATF4 signaling pathway and EMT-related proteins were detected by protein immunoblotting(Western blot).RESULTS Compared with the model group,the tumor volume was significantly reduced(P＜0.000 1),liver and spleen metastases were less pronounced in the Qi-Zhu-Zao high-dose group,and his-topathological staining results of liver tissue and tumor produced changes in oxidative stress indicators SOD,MDA,and GSH-Px,up-regulation of ER stress-related proteins p-PERK,p-IF2α,and ATF4,etc.,upregulated the protein expression levels of E-Cadherin,downregulated N-Cadherin,Vimentin,and Snail,and inhibited the EMT process(P＜0.01 or P＜0.05).CONCLUSION In this paper,we investigated the regulatory mechanism related to the inhibition of colorectal cancer growth and metastasis by the combination of Qi-Zhu-Zao trigonal medicine,and demonstrated that it may inhibit the growth and metastasis of colorectal cancer by activating the PERK/eIF2α/ATF4 pathway to induce sustained ER stress and affect the EMT process of colorectal cancer.

[Objective]To explore the efficacy of Solifenacin in the treatment of children with idiopathic overactive bladder(OAB).[Methods]The study included 67 children with idiopathic OAB treated in the urology clinic of our hospital from March 2022 to March 2023.After at least 2-week-long behavioral therapy showed no significant therapeutic effect,52 of the cases in the trial group were given oral Solifenacin 5 mg once daily and the other 15 cases in the control group con-tinued the behavioral therapy.The cases in trial group were subdivided into OAB-dry group(27 cases without urinary in-continence)and OAB-wet group(25 cases with urinary incontinence).The 3-day micturition diary,OAB Symptom Scores(OABSS)and the adverse reactions were recorded and analyzed before,at Weeks 2,4,8 and 12 after the treat-ment.[Results]Of all the 67 cases who completed a 3-month follow-up,44 were cured including 41 in the trial group and 3 in the control group,4 presented with adverse reactions.After the 3-month follow-up,the OABSS declined markedly in trial group than in control group(Z=4.524,P<0.001);the cure rates in trial group and control group are 78.8%and 20%respectively,with significant difference(χ2=15.367,P<0.001).At each follow-up,we found increased mean voided vol-ume(F=9.707,P<0.001),reduced mean voiding frequency during daytime(F=3.837,P=0.009)and decreased voiding urgency(χ2=482.835,P<0.001).After the 3-month follow-up,the cure rates in OAB-dry group and OAB-wet group are 81.5%and 76%respectively,with no significant difference(χ2=0.234,P=0.629).[Conclusions]In children with idiopath-ic OAB,oral Solifenacin 5 mg once daily could significantly increase mean voided volume,reduce mean voiding frequency during daytime,relieve symptoms of urinary urgency and lead to fewer adverse reactions,but is not significantly effective for the treatment of urinary incontinence in OAB-wet children.

Objective:To explore the risk factors involved in gastritis, gastric intraepithelial neoplasia (GIN) and gastric cancer in Shihezi area.Methods:A total of 7 110 Han nationality patients who underwent gastroscopy at the First Affiliated Hospital of Shihezi University School of Medicine from January 2012 to December 2016 were selected as the research subjects. The data of patients were obtained through medical records and questionnaires. After excluding diseases related to esophagus and duodenum, a total of 4 429 cases were included in the retrospective analysis. Of which, 4 249 were gastritis, 93 were GIN, and 87 were gastric cancer. χ2 test, rank-sum test or Fisher exact probability method were used to analyze the differences of various factors in gastritis, GIN and gastric cancer. Univariate and multivariate logistic regression analysis were used to screen the risk factors for gastritis progression to GIN and gastric cancer. Results:χ2 test and rank sum test showed that there were statistically significant differences in gender, age, history of digestive diseases and distribution of Helicobacter pylori ( HP) infection among the groups of gastritis, GIN and gastric cancer ( P<0.05). The proportion of HP infection decreased gradually with the disease severity. Multivariate logistic regression analysis showed that male ( P<0.001, OR=2.251, 95% CI: 1.461-3.470), elderly ( P<0.001, OR=4.829, 95% CI: 2.241-10.409), a family history of gastric cancer ( P=0.002, OR=3.227, 95% CI: 1.537-6.774) and a history of digestive diseases ( P=0.034, OR=1.644, 95% CI: 1.037-2.607) were independent risk factors for gastritis progression to GIN. Male ( P<0.001, OR=3.254, 95% CI: 2.026-5.225), middle-aged ( P=0.022, OR=2.688, 95% CI: 1.153-6.265) and elderly ( P=0.002, OR=4.734, 95% CI: 1.750-12.807) were independent risk factors for gastritis progression to gastric cancer. In stratified analysis to exclude age and gender, smoking ( P=0.028, OR=4.060, 95% CI: 1.160-14.202) was found to be a risk factor for gastritis progression to GIN in young adults, and obesity ( P=0.032, OR=3.869, 95% CI: 1.121-13.356) was found to be a risk factor for gastritis progression to gastric cancer in women. Conclusion:The degree of HP infection in gastric tissues is negatively correlated with the severity of gastric diseases, suggesting that HP infection may be an early event inducing gastric cancer. Male, the elderly, people with a family history of gastric cancer and a history of digestive diseases, and young smokers in Shihezi are more likely to develop GIN, and male, middle-aged, elderly, and obese women are at increased risk of gastric cancer.

Pollinosis is one of the common allergic diseases, and its morbidity continues to increase. Studies have demonstrated that air pollution is a key environmental factor that leads to the increased prevalence of pollinosis. Air pollutants and pollen allergens exert synergistic effects in stimulating allergic responses in susceptible individuals. In this article, we analyzed the relationship between air pollution and pollinosis based on the latest studies, and elaborated potential mechanisms on how air pollution increases the incidence of pollinosis and aggravates allergic reactions. Air pollutants can increase both pollen production and the levels of allergenic proteins, and enhance allergenicity of pollen allergens through structural alterations or chemical modifications. The potential mechanisms of air pollutants exacerbating pollen allergies are as follows: Air pollutants may disrupt the barrier function of the respiratory epithelium and facilitate the penetration of pollen allergens into deeper tissues. Additionally, they may accelerate the process of the release of pollen allergy-related cytokines, promoting T helper 2 (Th2) cell differentiation and exacerbating inflammatory responses in the airways. Given the limitations of existing research, future prospective studies are needed to explore the effects of mixed pollutants and different types of pollutants on pollen, and the response mechanisms of allergy-related cells and cytokines to different pollutant categories. The findings would provide a comprehensive understanding of the impacts of air pollution on pollen allergies and scientific evidence for effective protection of the heath of pollinosis patients.