Objective To analyze the epidemiological and etiological characteristics of hand,foot and mouth disease(HFMD)in Nanning City,Liangqing District from 2012 to 2023.Methods Descriptive epidemiological methods were used to describe the three distribution characteristics of HFMD,and to predict the incidence trend of HFMD.Results From 2012 to 2023,Liangqing District of Nanning City reported a total of 19 715 cases of HFMD.The incidence rates varied significantly across different years,with statistically significant differences(P＜0.01).The urban area reported the highest number of cases.The disease primarily occurred from April to October,with the highest incidence among children aged 6 months to 5 years,mainly among children in daycare and preschools.From 2012 to 2023,a total of 588 cases were diagnosed through laboratory tests,with the highest detection rate of other enteroviruses,and a relatively lower detection rate of EV71.Predictions indicate that the incidence of HFMD in Liangqing District of Nanning City will decrease in 2025 compared to 2023.Conclusion Incidence of HFMD in Liangqing District,Nanning is high,especially among children aged 6 months to 5 years.It is suggested to strengthen the epidemic surveillance,continue to carry out pathogen surveillance.

Objective To analyze the epidemiological and etiological characteristics of hand,foot and mouth disease(HFMD)in Nanning City,Liangqing District from 2012 to 2023.Methods Descriptive epidemiological methods were used to describe the three distribution characteristics of HFMD,and to predict the incidence trend of HFMD.Results From 2012 to 2023,Liangqing District of Nanning City reported a total of 19 715 cases of HFMD.The incidence rates varied significantly across different years,with statistically significant differences(P＜0.01).The urban area reported the highest number of cases.The disease primarily occurred from April to October,with the highest incidence among children aged 6 months to 5 years,mainly among children in daycare and preschools.From 2012 to 2023,a total of 588 cases were diagnosed through laboratory tests,with the highest detection rate of other enteroviruses,and a relatively lower detection rate of EV71.Predictions indicate that the incidence of HFMD in Liangqing District of Nanning City will decrease in 2025 compared to 2023.Conclusion Incidence of HFMD in Liangqing District,Nanning is high,especially among children aged 6 months to 5 years.It is suggested to strengthen the epidemic surveillance,continue to carry out pathogen surveillance.

DNA methylation is a prevalent epigenetic modification in vertebrates, and it has been shown to be involved the regulation of gene expression and embryo development. However, it remains unclear how DNA methylation regulates sexual development, especially in species without sex chromosomes. To determine this, we utilized zebrafish to investigate DNA methylation reprogramming during juvenile germ cell development and adult female-to-male sex transition. We reveal that primordial germ cells (PGCs) undergo significant DNA methylation reprogramming during germ cell development, and the methylome of PGCs is reset to an oocyte/ovary-like pattern at 9 days post fertilization (9 dpf). When DNA methyltransferase (DNMT) activity in juveniles was blocked after 9 dpf, the zebrafish developed into females. We also show that Tet3 is involved in PGC development. Notably, we find that DNA methylome reprogramming during adult zebrafish sex transition is similar to the reprogramming during the sex differentiation from 9 dpf PGCs to sperm. Furthermore, inhibiting DNMT activity can prevent the female-to-male sex transition, sug-gesting that methylation reprogramming is required for zebrafish sex transition. In summary, DNA methylation plays important roles in zebrafish germ cell development and sexual plasticity.

Objective: To investigate the deposition rate of Artemisia pollen in different nasal cavity regions and its influence factors in residents of northwest China. Methods: Thirty healthy adults from northwest China were enrolled. The computational fluid dynamics (CFD) and discrete phase model (DPM) were used for numerical simulation of nasal structures. The pollen deposition fraction in each anatomical part was counted and the effects of pollen density and breathing rate on deposition were analyzed. SPSS 19.0 software was used for statistical analysis. Results: The hottest deposition parts of Artemisia pollen were nasal septum (30.70%±12.27%), vestibule (27.45%±8.21%), middle turbinate area (13.59%±8.98%) and nasopharynx (7.14%±5.90%). When the inspiratory flow rate increased to 30 L/min, the deposition rates of pollen in nasal vestibule and nasal septum were significantly higher than that at the rate of 15 L/min (43.20%±11.14% vs 27.45%±8.21%, 51.48%±9.77% vs 30.70%±12.27%, t value was -8.126,-5.264, respectively, all P<0.05), which indicated that with the increase of the inspiratory flow rate, the deposition hotspot moved forward. Compared with the wet Artemisia pollen, the deposition rate of the dry pollen in nasal vestibule and nasal septum decreased significantly (16.55%±4.33% vs 27.45%±8.21%, 7.09%±3.69% vs 30.70%±12.27%, t value was 8.669, 9.173, respectively, all P<0.05). The escape rate at outlet increased from 17.00%±9.57% to 43.48%±13.43% (t=-9.282, P<0.05). Conclusions The deposition of Artemisia pollen in nasal cavity is highly concentrated. The inhalation velocity and the dry-wet degree of pollen are the main determinants of the deposition site.

Objective To investigate the expression of long chain non-coding(lnc) RNA LOC285194 in breast cancer tissue and paracancerous tissue and its clinical significance.Methods Forty-two samples of paraffin embedded breast cancer tissue and 16 samples of paraffin embedded paracancerous tissue were selected.The expression of lncRNA LOC285194 in these tissue were detected by using quantitative real-time polymerase chain reaction(PCR).Then its correlation with clinicopathological features was analyzed.Results The expression level of lncRNA LOC285194 in breast cancer tissue was significantly lower that in the paracancerous tissue (P＜0.01);the level of lncRNA LOC285194 in human epidermal growth factor receptor-2(HER2)overexpression tissues was up-regulated compared with HER2 negative breast cancer tissue(P =0.013),there was a positive correlation between them(r=0.385,P=0.012).Conclusion lncRNA LOC285194 may play the role of cancer suppressor gene and may be involved in the generation of breast cancer by HER2 association,which may become a target gene of breast cancer treatment.

Objective To study the change of levels of IL-6,IL-17,IL-23,IL-8,TNF-α and IFN-γ and their clinical significance on children with different types of Henoch-Schonlein purpura (HSP) Methods The blood specimens of 180 children with HSP as disease group and 30 health children as normal group were collected respectively.Disease group included 30 children at acute stage and 30 at convalescence stage of primary abdominal type,30 at acute stage and 30 at convalescence stage of primary non-abdominal type,30 at acute stage of secondary abdominal type,and 30 at acute stage of secondary non-abdominal type.The plasma levels of IL-6,IL-8,IL-17,IL-23,TNF-α and IFN-γ in the two groups were measured by ELISA method for comparison and analysis.Results The plasma levels of IL-6,IL-8,IL-17,IL-23 and TNF-α in disease group were higher than those in the normal group (P＜0.05).Those levels in the children at acute stage and of primary group were also found to be higher than those at convalescence stage (P＜0.05) and of secondary group (P＜0.05) respectively.Comparison of IL-6,IL-8,IL-17,IL-23 and TNF-α between abdominal type and the non-abdominal type had no significant difference (P＞0.05).The plasma level of IFN-γ in disease group was lower than those in normal group (P＜0.05).The levels of IFN-γ in the children at acute stage and of primary group were lower than those at convalescence stage (P ＜0.05) and of the secondary group (P ＜0.05) Comparison of IFN-γ between abdominal type and non-abdominal type had no significant difference (P＞0.05) Conclusions The plasma levels of IL-6,IL-8,IL-17,IL-23,TNF-o,IFN-γ show obvious changes in children with HSP,which suggests that the changes of cytokines are associated with the pathogenesis and prognosis of Henoch-Schonlein purpura.

Objective To analyze the application of multi‐slice spiral CT and 3D airway reconstruction technique on obstruc‐tive sleep apnea syndrome (OSAS) of pharyngeal soft tissue and upper airway stenosis .Methods Selected 92 patients with OSAS in our hospital as the observation group and another 92 healthy persons were selected as control group ,all patients achieved multi‐slice CT and 3D airway reconstruction technical inspections ,counted and compared their pharyngeal soft tissue and upper airway stenosis .Results Airway stenosis of tongue back ,and hypopharynx retro‐palatal of control group were more narrow compared with the control group(P<0 .05);the observation group′s pharyngeal soft tissue was more thick than the control group ,so as the length and width(P< 0 .05) .Conclusion Multi‐slice spiral CT and 3D airway reconstruction technique can effectively share pharyngeal soft tissue and upper airway stenosis of patients with OSAS .

Objective:To establish the model of rats with UC by 2,4,6 trinitrobenzene sulfonic acid ( TNBS)/ethanol to understand the changes of IL-17,IL-23,TGF-β1,IFN-γin pathogenesis of ulcerative colitis (UC) and the impacts of mesalazine,mont-morillonite powder and clostridium on that.Methods:85 rats were divided randomly into 6 groups including the model ,mesalazine, montmorillonite,clostridium,mesalazine combined with montmorillonite powder group (15 rats per group ) and an additional control group of 10 normal rats.TNBS/ethanol was used to establish the model of rats with UC.The dosage of model, mesalazine, montmorillonite powder ,clostridium and mesalazine combined with montmorillonite powder were converted by surface area of rat and given to the rats by gastric-tube daily.All rats were executed at the 12th day of the molding and treatment ,and the blood and colon samples were collected.The content of IL-17,IL-23,TGF-β1,IFN-γwas measured in the blood by the ELISA method.The different changes of the four cytokines were compared separately.Results: ( 1 ) TNBS/ethanol was used to establish the model of rats with UC.The obvious inflammation can be observed on distal colon of rats by pathologic sections of HE stained .(2) The levels of plasma IL-17,IL-23 and IFN-γin the model,mesalazine,montmorillonite,clostridium and mesalazine combined with montmorillonite powder group were higher than ones in the control gruop (P<0.05),meanwhile,the levels of plasma TGF-β1 are lower (P<0.05).3.Comparing with the model group,the levels of plasma IL-17,IL-23 and IFN-γin the mesalazine,montmorillonite,clostridium and mesalazine combined with montmorillonite powder group were lower , and the levels of TGF-β1 were higer.The differences have statistic significative ( P<0.05).(4)Comparing the efficacy of treatment among mesalazine ,montmorillonite powder,clostridium and mesalazine combined with montmorillonite powder ,mesalazine and mesalazine combined with montmorillonite powder gets the best results ( P<0.05 ).The efficacy between montmorillonite powder and clostridium is similar.Conclusion:(1) TNBS/ethanol can be used to establish the model of rats with UC and can be successfully approved by the measurement of symptoms and pathologic investigation .(2)The IL-17,IL-23 and IFN-γare very active higher in the blood of rats with experimental ulcerative colitis induced by TNBS /ethanol, and have a positive correlation with inflammation.The TGF-β1 is in decrease in the blood of rats with colitis , and has a Negative Correlation with inflammation.(3)Mesalazine,montmorillonite powder,clostridium and mesalazine combined with montmorillonite powder may renovate the damage of inflammatory tissues of rats with experimental ulcerative colitis , and relieve the symptom of inflammation by reducing exudation of proinflammatory cytokines IL-17, IL-23 and immune regulatory cytokines IFN-γby producing the exudation of proinflammatory cytokines TGF-β1 to be good for recovery of UC.

Objective To investigate the risk factors of electrical storm(ES) in patients with acute myocardial infarction (AMI) during perioperative period of direct percutaneous coronary intervention(PCI).Methods Forty-one AMI patients had been treated with direct PCI.The patients with perioperative ES were included in ES group and those without perioperative ES were included in conntrol group.ES was defined as the occurrence of spontaneous ventricular tachycardia or venicular fibrillation was twice or more within 24 h and unable to stop by itself and emergency treatment was needed.The difference of the clinical data between two groups were compared.Results There were 7 in 41 patients with direct PCI who had ES,the incidence was 17.07％,and 34 cases didn't have ES.Systolic pressure,diastolic pressure,white cell count,blood glucose,international normalized ratio and time duration from chest pain onset to direct PCI between two groups had no significant differences (P ＞0.05).Age,CK-MB,cardiac troponin I,the diameter of infarctrelated arleries(IRA ),incidence of reperfusion arrhythmia and mortality of ES group were all obviously higher than those of control group (P ＜ 0.05 or ＜ 0.01 ).The incidence of ES in patients whose IRA was left main artery or occlusion of middle section of two main coronary arteries,right coronary artery,left anterior descending branch and left circumflex artery was 66.67％(2/3),18.75％(3/16),11.76％(2/17) and O, respectively.Conclusions Perioperative ES during direct PCI most commonly occurrs in AMI patients with left main artery or occlusion of middle section of two main coronary artery.The diameter of IRA,TIMI flow classification after the patency of IRA and recanalization arrhythmia are the main risk factors of the occurrence of perioperative ES.

SAαt2,6 and SAα2,3 linked sialic acid molecules on epithelial cell membrane served as receptors for influenza virus, which axe specifically recognized by human and avian influenza viruses, respectively. The distribution of these two species of sialic acids in human respiratory tract from different anatomical sites and different age groups was investigated. The results showed that SAα2,3Gal species was prevalent in respiratory bronchiole and lung alveolar epithelium, but was infiequent in trachea, bronchus and bronchiole. On the contrary, the SAα2,6Gal species was more common in the trachea and bronchus and to a lesser degree in the alveolar epithelium. When compared the expression levels of SAα2,6Gal and α2,3Gal in the respiratory tract among different age groups, no significant difference was found. In the ex vivo H5N1 virus infection study, alveolus epithelium were found to be more susceptible to avian influenza than trachea and bronchus epithelial cells. These results suggest that the human respiratory tract, to some extent, is permissive for avian influenza viruses. The currently-observed limited human to human transmission of H5N1 virus may be associated with the different abundance of SAα2,3Gal linkages in human upper respiratory tract among individuals.