Objective: To evaluate the application of CT in the diagnosis of fracture position and the cause of diplopia after orbital trauma. Methods:The CT findings and the clinical informations of orbital fractures accompanying diplopias in 68 patients (70 orbits) were retrospectively analysed. Results: Orbital fractures in 70 orbits were diagnosed by CT. There were burst orbital floor fractures in 45 orbits ( among them orbital floor fracture combined with medial wall fracture in 15 orbits), non-burst obital floor fractures in 10, medial orbital fractures in 5, zygomatic-orbital fractures in 5, orbit roof fractures in 5. The accuracy of CT in diagnosing orbital fracture was 100 percent. In 68 cases, there were 64 patients with vertical diplopia and 4 with horizontal diplopia . Conclusion: CT can correctly locate the orbital fracture and diagnose the cause of diplopia.

Objective To evaluate the clinical value of color Doppler ultrasound (CDUS) and computed tomography angiography (CTA) in diagnosis of Budd-Chiari syndrome(BCS).Methods The CDUS and CTA data about 33 BCS patients diagnosed by digital subtraction angiography(DSA) and treated by interventional therapy were retrospectively analyzed.All of 33 patients with BCS were examined with CDUS,26 cases of then received CTA.The diagnostic value of BCS between two methods were compared.Results The diagnostic accordance rate of CDUS and CTA for BCS were 90.9％ and 96.2％ respectively,which had no significant statistical difference(P ＞ 0.05).The two methods could not only comprehensively systematically reflect the morphologic changes of liver and spleen,the stenosis and blood flow state of the lesion regions,but also clearly display the intrahepatic/extrahepatic collateral vessels trend in the abdomen.One week after interventional therapy,the CUDS results showed blood vessels pristine and stable hemodynamics.Conclusion CDUS is the preferred imaging in the diagnosis and postoperative re-examination of BCS.While,CTA can provide many important parameters for preoperative assessment and operation way.

Objective To investigate the effect of Lactobacillus delbrueckii fermented supernatant on Candida albicans biofilm and explore its possible mechanism and effective components.Methods Lactobacillus delbrueckii was isolated from vaginal Lactobacillus capsules (Ding Junsheng) and identified by mass spectrometer and sequencing.Lactobacillus delbrueckii fermented supernatant was prepared.The effect of Lactobacillus delbrueckii fermented supernatant on Candida albicans biofilm was tested by microplate crystal violet staining method and catheterization tube modeling method.Biofilm morphological changes were analyzed by crystal violet staining and Live/ Dead fluorescent dyes.Exopolysaccharides of Candida albicans biofilm was measured by the sulphruic acid-phenol method.The effect of Lactobacillus delbrueckii fermented supernatant on the adherence of Candida albicans biofilm was tested by the method of colony counting on plate.The fermented supernatant was treated with NaOH,catalase,typsin and proteinase K respectively.Then the treated fermented supernatant's effect on Candida albicans biofilm formation was detected.One-way ANOVA or Wilcoxon Rank Sum Test was used as statistical analysis for quantitative data.Results Lactobacillus delbrueckii was successful ly isolated and identified from Ding Junsheng.Lactobacillus delbrueckii fermented supernatant could significantly and dose-dependantly inhibited the formation of Candida albicans biofilm(F=10.804,P=0.000).The morphological changes showed that the fermented supernatant could decrease the formation of biofilm.When treated with Lactobacillus delbrueckii fermented supernatant,Candida albicans biofilm expolysaccharides was significantly inhibited (F=17.140,P=0.000) and adherence ability was reduced.Compared to untreated fermented supernatant (A490=0.486±0.112),the biofilm inhibition effect of fermented supernatant treated with NaOH (A490=0.675 ± 0.095),catalase(A490=0.577 ± 0.118),typsin(A490=0.600 ± 0.044) and proteinase K (A490-0.495±0.084)only decreased slightly,but when compared to the control group (A490=1.079 ± 0.158),the treated fermented supernatant still showed significant biofilm inhibition effect (x2=26.052,P=0.000),which suggested that the effective components of fermented supernatant were organic acid and bacteriocin-like substance.Conclusions Lactobacillus delbrueckii fermented supernatant can effectively inhibit Candida albicans biofilm formation.The action mechanisms are related with expolysaccharides decreasement and adherence reduction.The function components of fermented supernatant are possibly organic acids and bacteriocin-like substance.

Objective To investigate the value of next-generation sequencing (NGS) technique for genetic analysis of spontaneous abortion. Methods From January to June 2017, 154 patients who visited the First Affiliated Hospital of Zhengzhou University for spontaneous abortion were enrolled. All abortion tissue samples were analyzed by both NGS combined with short tandem repeat (STR) and single nucleotide polymorphism array (SNP-array). Results of the two methods were compared by Chi-square or Fisher's exact test. Results (1) Chromosomal abnormalities were detected in 109 of the 154 cases (70.7%), including 52 (47.7%) of numerical chromosomal abnormalities, 49 (45.0%) of structural chromosomal abnormalities, six (5.5%) of mosaicism, and two (1.8%) of uniparental disomy (UPD). In those 52 cases of numerical chromosome abnormalities, there were 45 of chromosome aneuploidy and seven of polyploidy. The top three numerical chromosomal abnormalities were 45,X (27.0%, 14/52), trisomy 22 (9.6%, 5/52) and trisomy 16 (7.7%, 4/52). Forty-nine structural abnormality cases carried 67 copy number variations (CNV), including 13 pathogenic CNV (pCNV, 19.4%), 24 variants of unknown clinical significance (35.8%) and 30 benign CNV (44.8%). In those 13 pCNVs, two were responsible for microdeletion and microduplication syndromes. (2) SNP-array was successful in 152 cases, but failed in two (1.3%) due to genomic DNA <200 ng. However, NGS technology was successful in all 154 cases and identified chromosomal abnormalities in the two cases that SNP-array had failed. No statistically significant difference was shown in the detection rate of chromosomal abnormalities between SNP-array and NGS technology [70.4% (107/152) vs 67.5% (104/154), χ2=0.293, P=0.588]. (3) No significant difference in the detection of chromosome aneuploidy (six cases in each group, 3.9% vs 3.9%) and mosaicism (45 cases in each group, 29.2% vs 29.6%) was found between NGS technology and SNP-array. Three cases of polyploidy (69, XXX) and two of UPD were identified by SNP-array, but not by NGS. When combined with STR, NGS was able to detect all three cases of polyploidy (69, XXX). (4) Forty-seven structural abnormality cases detected by SNP-array carried 53 CNVs, and 49 detected by NGS carried 67 CNVs. (5) NGS detected ten, three and one more CNVs than SNP-array did when the genome lengths were 100-<500, 500-<1 000 and ≥1 000 kb, respectively. Conclusions NGS can be used to detect chromosomal aneuploidy and mosaicism that can be identified by SNP-array with fewer limitations on total amount of genome. Moreover, CNVs that fail to be identified by SNP-array can also be detected by NGS. When combined with STR, NGS can effectively detect chromosomal polyploidy. Therefore, NGS could be a potential genetic analysis method for spontaneous abortion and of importance for genetic counseling.

In recent years, the prevalence of metabolic diseases, including obesity, diabetes, nonalcoholic fatty liver disease, and metabolic syndrome, increased significantly. Fatigue is common in metabolic diseases and may lead to functional disability. This complicated feeling imposes a huge influence on patients with metabolic diseases physically and psychologically, which seriously affects the quality of life and brings serious burden to the social economy. There were an increasing number of researches on fatigue and metabolic diseases. This article reviews the evidences of the linkages between fatigue and metabolic diseases.

ObjectiveTo investigate the pathogenic spectrum and molecular characteristics of infectious diarrhea among children in Putuo District of Shanghai from 2018 to 2023， and to provide scientific basis for the prevention and control of infectious diarrhea in children. MethodsFecal samples from the cases visited sentinel hospitals for children’s diarrheal disease in Putuo District， Shanghai， were collected from January 2018 to December 2023. A total of 11 species of bacteria were isolated and cultured， and 5 species of viruses were detected by real-time fluorescent polymerase chain reaction （PCR）. The molecular typing of some positive strains was analyzed by the standard pulsed-field gel electrophoresis （PFGE） method. The polymerase-capsid protein linkage region of some norovirus-positive samples was amplified by reverse transcription PCR， and was sequenced and analyzed by bioinformatics software. The Chi-square test and Fisher’s exact probability test were used to compare the pathogen-positive rates in 2018‒2019 and 2020‒2023. ResultsOf the 707 cases of children with infectious diarrhea， the total positive rate was 47.67%， with a single bacterial positivity rate of 16.27%， a single viral positivity rate of 22.63%， and a mixed positivity rate of 8.77%， respectively. The dominant pathogens were rotavirus （10.75%）， norovirus （10.33%）， enteropathogenic Escherichia coli （8.06%）， Salmonella （6.36%）， enteroaggregative Escherichia coli （5.52%）， and Campylobacter （5.23%）. Bacterial infections were predominant in summer and fall， and viral infections were predominant in winter and spring. The total positive rate decreased in 2020‒2023 compared with that of 2018‒2019 （χ²=5.753，P<0.05）. Thirty-seven strains of Salmonella， 81 strains of diarrheagenic Escherichia coli， and 19 strains of Campylobacter were completed for the molecular typing analysis by PFGE， which were classified into 28， 80 and 18 banding types， respectively， with a wide range of banding similarity. Nineteen copies of norovirus GⅡ group gene sequences were analyzed and classified into 5 genotypes， which were mainly GⅡ.Pe-GⅡ.4 and GⅡ.P16-GⅡ.2 types. ConclusionRotavirus， norovirus， diarrheagenic Escherichia coli， Salmonella， and Campylobacter are the dominant pathogens of infectious diarrhea in children in Putuo District of Shanghai. The pathogen spectrum shows a trend of seasonal epidemic characteristics， with a diversity of molecular characteristics of some pathogens. Surveillance and monitoring on molecular characteristics of the pathogens of infectious diarrhea in children should be strengthened in different seasons， so as to provide a laboratory basis for the prevention and control of infectious diarrhea.

Chimeric antigen receptor T (CAR-T) cell therapy is a novel cellular immunotherapy that is widely used to treat hematological malignancies, including acute leukemia, lymphoma, and multiple myeloma. Despite its remarkable clinical effects, this therapy has side effects that cannot be underestimated. Cytokine release syndrome (CRS) is one of the most clinically important and potentially life-threatening toxicities. This syndrome is a systemic immune storm that involves the mass cytokines releasing by activated immune cells. This phenomenon causes multisystem damages and sometimes even death. In this study, we reported the management of a patient with recurrent and refractory multiple myeloma and three patients with acute lymphocytic leukemia who suffered CRS during CAR-T treatment. The early application of tocilizumab, an anti-IL-6 receptor antibody, according to toxicity grading and clinical manifestation is recommended especially for patients who suffer continuous hyperpyrexia, hypotensive shock, acute respiratory failure, and whose CRS toxicities deteriorated rapidly. Moreover, low doses of dexamethasone (5-10 mg/day) were used for refractory CRS not responding to tocilizumab. The effective management of the toxicities associated with CRS will bring additional survival opportunities and improve the quality of life for patients with cancer.

Preliminary exploration of using ultrasound to quantitatively evaluate the development of epiphyseal cartilage and analyze its correlation with bone age, based on the ultrasound findings of the long bone joint end.

To research on area ossification ratio (AOR), a novel parameter for quantitatively assessing adolescent bone age by conventional ultrasonography, and evaluate the correlation between AOR and radiographic bone age.