Objective To explore the application of the Autoregressive Integrated Moving Average (ARIMA) model in predicting the number of reported hepatitis E cases in Yunnan Province，to use this model to predict the incidence trend of hepatitis E, and to provide reference for the scientific prevention and control of hepatitis E. Methods Monthly reported cases of hepatitis E in Yunnan Province from 2012 to 2021 were collected. The ARIMA model was established using SPSS 27.0, and the model was validated and parameters were optimized with data from January 2022 to December 2022. The optimal fitting model was used to predict the incidence of hepatitis E in 2023. Results Hepatitis E incidence in Yunnan Province showed a certain seasonal distribution, with most cases concentrated from March to August. All parameters of ARIMA(3,1,4)(1,1,1)₁₂ passed statistical tests. The Ljung-Box test showed statistic Q =10.050, P = 0.346, residual sequence was a white noise sequence, and goodness-of-fit index stationary R² was 0.591. The model extrapolation effect was verified with 2022 data, and MAPE was 14.747, indicating that the model extrapolation effect was effective. The number of hepatitis E cases in Yunnan Province in 2023 was expected to be 1,086. Conclusion The ARIMA (3,1,4)(1,1,1)₁₂ model shows good fitting performance for hepatitis E cases in Yunnan Province and can effectively predict short-term disease trends, providing a theoretical basis for formulating prevention and control measures for hepatitis E.

Objective:To characterize the histopathological subtypes and their clinicopathological parameters of gender and onset age by common, rare and sparse primary esophageal malignant tumors (PEMT).Methods:A total of 272 437 patients with PEMT were enrolled in this study, and all of the patients were received radical surgery. The clinicopathological information of the patients was obtained from the database established by the State Key Laboratory of Esophageal Cancer Prevention & Treatment from September 1973 to December 2020, which included the clinical treatment, pathological diagnosis and follow-up information of esophagus and gastric cardia cancers. All patients were diagnosed and classified by the criteria of esophageal tumor histopathological diagnosis and classification (2019) of the World Health Organization (WHO). The esophageal tumors, which were not included in the WHO classification, were analyzed separately according to the postoperative pathological diagnosis. The χ 2 test was performed by the SPSS 25.0 software on count data, and the test standard α=0.05. Results:A total of 32 histopathological types were identified in the enrolled PEMT patients, of which 10 subtypes were not included in the WHO classification. According to the frequency, PEMT were divided into common (esophageal squamous cell carcinoma, ESCC, accounting for 97.1%), rare (esophageal adenocarcinoma, EAC, accounting for 2.3%) and sparse (mainly esophageal small cell carcinoma, malignant melanoma, etc., accounting for 0.6%). All the common, rare, and sparse types occurred predominantly in male patients, and the gender difference of rare type was most significant (EAC, male∶ female, 2.67∶1), followed with common type (ESCC, male∶ female, 1.78∶1) and sparse type (male∶ female, 1.71∶1). The common type (ESCC) mainly occurred in the middle thoracic segment (65.2%), while the rare type (EAC) mainly occurred in the lower thoracic segment (56.8%). Among the sparse type, malignant melanoma and malignant fibrous histiocytoma were both predominantly located in the lower thoracic segment (51.7%, 66.7%), and the others were mainly in the middle thoracic segment.Conclusion:ESCC is the most common type among the 32 histopathological types of PEMT, followed by EAC as the rare type, and esophageal small cell carcinoma and malignant melanoma as the major sparse type, and all of which are mainly occur in male patients. The common type of ESCC mainly occur in the middle thoracic segment, while the rare type of EAC mainly in the lower thoracic segment. The mainly sparse type of malignant melanoma and malignant fibrous histiocytoma predominately occur in the lower thoracic segment, and the remaining sparse types mainly occur in the middle thoracic segment.

Objective:To investigate the reparative efficacy and mechanism of pressure-adjustable macroporous antibacterial hydrogel in the treatment of infected wounds.Methods:Staphylococcus aureus was used to establish wound infection models in healthy C57BL/6 mice. The models were divided into 3 groups subjected to 3 different treatments: a negative control group with no hydrogel treatment (group A), a control group treated by common medical hydrogel (group B) and an experiment group treated by pressure-adjustable macroporous antibacterial hydrogel (group C). On days 1, 3, 6, 9 and 12, the effects of 3 treatments were compared on the wound area and the number of bacterial colonies under scab, on the apoptosis of fibroblasts based on the changes of type Ⅰ procollagen, and on the inhibition of inflammation during wound repair by detecting the expression of interleukin-6 (IL-6) and tumor necrosis factor (TNF-α).Results:On days 1 and 3, there was no significant difference between the 3 groups in the wound area ( P>0.05), but on days 6, 9 and 12, there were significant differences between the 3 groups in the wound area ( P<0.05). On day 6, the wound areas in group B (1.23 cm 2 ± 0.16 cm 2) and in group C (1.14 cm 2 ± 0.12 cm 2) were significantly smaller than that in group A (1.56 cm 2 ± 0.16 cm 2) ( P<0.05), but there was no significant difference between groups B and C ( P>0.05). On days 9 and 12, the wound areas in group B (0.97 cm 2 ± 0.13 cm 2 and 0.76 cm 2 ± 0.10 cm 2) and in group C (0.66 cm 2 ± 0.06 cm 2 and 0.48 cm 2 ± 0.07 cm 2) were significantly smaller than those in group A (1.49 cm 2 ± 0.11 cm 2 and 1.39 cm 2 ± 0.13 cm 2), and those in group C were significantly smaller than those in group B (all P<0.05). On day 1, there was no significant difference between the 3 groups in the number of bacterial colonies under scab ( P>0.05). On days 3, 6, 9 and 12, the numbers of bacterial colonies under scab in groups B and C were significantly smaller than that in group A ( P<0.05), and that in group C was significantly smaller than that in group B ( P< 0.05). The nucleic acid electrophoresis showed that the grayscale bands in group C were significantly darker than those in groups A and B. The early apoptosis rate of the fibroblasts in group C[low-right positive fluorescence (LR%): 9.72%] was significantly lower than that in group A (43.99%) and that in group B (38.43%), and that in group B was significantly lower than that in group A ( P<0.05). On day 12, the ratio of the gray values of IL-6 and β-actin (0.64 ± 0.10) and the ratio of the gray values of TNF-α and β-actin (0.34 ± 0.05) in the fibroblasts in group C were significantly higher than those in group A (1.22 ± 0.21 and 0.60 ± 0.14) and in group B (0.88 ± 0.02 and 0.41 ± 0.06) ( P<0.01). Conclusion:The pressure-adjustable macroporous antibacterial hydrogel is an effective treatment of infected wounds and its mechanism may be related to the reduced apoptosis of fibroblasts.

OBJECTIVE:To understand the drug use of sample hospitals,and to provide reference for drug production,man-agement and service department. METHODS:Statistical analysis was conducted in the data of drug use in national 1 248 sample hos-pitals during 4th quarter of 2012-3rd quarter of 2013. RESULTS&CONCLUSIONS:Anti-infection medicine,Chinese patent medi-cine,nervous system drugs has being ranked the top 3 in the list of consumption sum,and that of various drugs is in an upward trend. Top 20 drugs in the list of consumption sum mainly are biological products,drugs for the nervous system,digestive system drugs;that of human albumin and deproteinized calf serum have increased greatly. Top 10 imported pharmaceutical enterprises or joint ventures in the list of consumption sum mainly are multinational enterprises,and they are stable in ranking. The development of pharmaceutical enterprises should focus on brand,quality,price and service,etc.,so that their competitiveness can be improved.

OBJECTIVETo compare frequencies of natural killer (NK) cell subsets and their surface expression of the NKG2D receptor in patients with primary biliary cirrhosis (PBC), and to determine the correlation between expression of MICA on monocytes and function-associated receptors on the NK cells of PBC patients.

METHODSTwenty patients with PBC and 18 healthy donors were included in the study. Peripheral blood samples anticoagulated with heparin were labeled with the following antibody combinations: anti-CD45/anti-CD14/anti-MICA, antiCD3/anti-CD56/anti-CD16/anti-NKG2D. Frequencies of MICA-positive monocytes, NK cell subsets, and NK cells with surface expression of NKG2D were measured with flow cytometry. Correlation of MICA expression on monocytes with NKG2D expreesion on NK cells was assessed through linear correlation and regression analysis.

RESULTSThe PBC patients had significantly lower percentages of NK cells than the healthy donors (6.8%+/-2.9% vs.16.4%+/-3.4%, P =0.000<0.05). In the PBC patients, the percentage of CD56-positive NK ceils was significantly higher than that of CD16-positive NK cells (4.2%+/-2.8% vs.1.4%+/-0.7%, P=0.003<0.05). The PBC patients also had significantly higher percentage of NKG2D surface expressing CD56-positive NK cells than the healthy donors (79.4%+/-10.2% vs.64.8%+/-10.7%, P=0.000<0.05). The PBC patients and healthy donors showed no statistically significant differences in percentages of NKG2D surface expressing CDl6-positive NK (70.1%+/-12.9% vs.61.1%+/-5.9%, P=0.078>0.05). MICA was seldom detected on normal monocytes (2.6%+/-1.9%), but present for 51.6%+/-16.2% of monoeytes from the PBC patients (P =0.000<0.05). There was a significant difference in frequency of CD14/MICA double-positive monocytes between the healthy donors and PBC patients. No correlation of MICA expression on monocytes with NKG2D expression on NK cells was found.

CONCLUSIONPBC patients have lower levels of NK cells in peripheral blood than their healthy counterparts. PBC patients also have higher levels of the CD56+ NK cell subset and cells with surface expression of the activated NKG2D receptor. It appears that PBC patients have a greater level of CD14+MICA+ peripheral blood mononuclear cells. NK cells may be affected by the PBC-related monocytes and participate in disease pathogenesis through immune regulation.

Objective To investigate the bacteroides of patients with AIDS and the healthy control by real-time quantitative PCR in order to reveal the role and significance of gut microflora in the AIDS-associated molecular pathogenesis. Methods The feces of the preoperative AIDS patients (n = 30) and the healthy control (n = 30) were collected. According to the sequences of target genes, specific PCR primers were designed. Bacterial genome DNA extracted from fecal samples was quantified by real-time quantitative PCR to analyze the bacterial amounts. Results In the patients with AIDS, the level of B.fragilis (3.23 ± 1.59; 4.05 ± 1.65), B.uniformis (5.69 ± 0.95;6.70 ± 2.18), B.thetaiotaomicron (5.01 ± 1.61; 6.41 ± 2.34), B.ovatus (5.78 ± 1.03; 7.07 ± 1.75), B.distasonis (4.21 ± 1.21; 5.53 ± 2.46) and B.vulgatus (2.92 ± 1.30; 4.48 ± 1.32) were significantly higher than those of healthy controls (P < 0.05). Conclusion The amount of fecal bacteroides of AIDS patients are significantly higher than those of the healthy control. These data indicate that the gut microflora of AIDS patients was disordered.

Objective To compare the efficacy and safety of lauromacrogol injection sclerotherapy with ethanol injection sclerotherapy in treating simple liver cysts. Methods A total of 166 patients with simple liver cyst were randomly divided into the lauromacrogol group (study group, n=86) and the absolute alcohol group (control group, n=80). Under ultrasonographic guidance, puncture aspiration of liver cyst was carried out in all patients, which was followed by injection of lauromacrogol for patients in the study group or injection of ethanol for patients in the control group. The therapeutic effect and the side-effect were evaluated. The results were compared between the two groups. Results No serious complications such as bleeding or infection occurred in both groups. During the therapeutic course , 45 patients (56.3%) in the control group felt pain to some degree and 23 patients (28.8%) developed drunk-like symptoms, while no patient in the study group felt any obvious discomfort. One week after sclerotherapy , 20 patients (25%) in the control group complained of distending pain on the right upper abdomen, while only 9 patients (10.5%) in the study group complained of pain, and the difference was statistically significant (χ2= 6.073, P < 0.05). Six months after the treatment, the cure rate of the study group and the control group was 95.7%and 93.5%respectively, and the difference between the two groups was no significant (P > 0.05). Conclusion For the treatment of liver cysts, lauromacrogol injection is safe and effective. Therefore, this technique should be recommended in clinical practice.

Objective To characterize rpoB gene mutations in rifampin-resistant Mycobacterium tuberculosis (M.tuberculosis) in Zhejiang Province.Methods A total of 188 clinical isolates of M.tuberculosis from 188 patients with pulmonary tuberculosis in Tongde Hospital of Zhejiang Province and Integrated Chinese and Western Medicine Hospital of Zhejiang Province were collected.Conventional drug resistance analysis was performed and the mutation of rpoB gene was detected by PCR-based DNA sequencing.The association between gene mutations in rifampin-resistance determining region of M.tuberculosis and clinical resistance was analyzed.Results Fifty-seven out of 188 isolates (30.3％) were drug-resistant strains,including 18 isolates (9.6％) with single-resistance to rifampin,28 isolates (14.9％) with single-resistance to other anti-tuberculosis drugs (10 to isoniazid,12 to streptomycin and 6 to ethambutol),and 11 isolates (5.9％) with multi-drug-resistance (rifampin plus one or more drugs of isoniazid,streptomycin and ethambutol).Among 29 rifampin-resistant strains,rpoB gene mutation existed in 27 strains (93.1％),and the most frequently mutated sites were codons 526 (55.6％,16/27),513 (22.2％,5/27),531 (14.8 ％,4/27)) and 529 (7.4％,2/27).Among 28 strains which were resistant to other anti-tuberculosis drugs,rpoB mutations existed in 4 strains (14.3％),and the mutated sites were codons 526 (2 strains) and 513 (2 strains).All 13 sensitive isolates had no mutation in rpoB gene.Conclusion Rifampin resistance in M.tuberculosis is closely correlated with rpoB gene mutations in Zhejiang province,and the most frequent sites of mutation are at codons 526 and 513.

This study examined the effect of silencing LRIG3 expression on the proliferation and apoptosis of bladder cancer T24 cells and explored the role of LRIG3 in the tumorigenesis of bladder cancer.Bladder cancer T24 cells were routinely cultured and pSilencer plasmids were employed to construct LRIG3 eukaryotic expression vector of LRIG3-siRNA,i.e.,pSilencer-LRIG3-siRNA.After confirmation,the vector was transfected into HEK293 cells to make a replication-deficient adenovirus,pAd-LRIG3-siRNA,which was then introduced into bladder cancer T24 cells.RT-PCR,Western-blotting were performed to detect the levels of LRIG3 mRNA and proteins.Cells number was determined by using MTT test.Hoechst33258 staining,transmission microscopy,flow cytometery were conducted to examine the cell apoptosis.Three groups included a blank control group,a negative control group (containing non-interfering plasmids) and a pAd-LRIG3-siRNA group.Our results showed that the recombinant pAd-LRIG3-siRNA was successfully transfected into the bladder cancer T24 cells.The siRNA formed by the transcription of the recombinant plasmids resulted in significantly reduced expressions of LRIG3 gene and protein and significantly decreased cell proliferation and growth in the pAd-LRIG3-siRNA group as compared with the control group (P＜0.01).The siRNA also caused apoptotic changes of some cells,with the apoptosis rate being (17.69±0.75)％,which was significantly different from that of the control group (P＜0.01).It was concluded that recombinant pAd-LRIG3-siRNA plasmids could effectively decrease the expression of LRIG3 mRNA and proteins and,to some extent,inhibit the proliferation and promote the apoptosis of bladder cancer T24 cells.Silencing LRIG3 gene might be a novel alternative for the treatment of bladder cancer.

This study examined the effect of silencing LRIG3 expression on the proliferation and apoptosis of bladder cancer T24 cells and explored the role of LRIG3 in the tumorigenesis of bladder cancer. Bladder cancer T24 cells were routinely cultured and pSilencer plasmids were employed to construct LRIG3 eukaryotic expression vector of LRIG3-siRNA, i.e., pSilencer-LRIG3-siRNA. After confirmation, the vector was transfected into HEK293 cells to make a replication-deficient adenovirus, pAd-LRIG3-siRNA, which was then introduced into bladder cancer T24 cells. RT-PCR, Western-blotting were performed to detect the levels of LRIG3 mRNA and proteins. Cells number was determined by using MTT test. Hoechst33258 staining, transmission microscopy, flow cytometery were conducted to examine the cell apoptosis. Three groups included a blank control group, a negative control group (containing non-interfering plasmids) and a pAd-LRIG3-siRNA group. Our results showed that the recombinant pAd-LRIG3-siRNA was successfully transfected into the bladder cancer T24 cells. The siRNA formed by the transcription of the recombinant plasmids resulted in significantly reduced expressions of LRIG3 gene and protein and significantly decreased cell proliferation and growth in the pAd-LRIG3-siRNA group as compared with the control group (P<0.01). The siRNA also caused apoptotic changes of some cells, with the apoptosis rate being (17.69±0.75)%, which was significantly different from that of the control group (P<0.01). It was concluded that recombinant pAd-LRIG3-siRNA plasmids could effectively decrease the expression of LRIG3 mRNA and proteins and, to some extent, inhibit the proliferation and promote the apoptosis of bladder cancer T24 cells. Silencing LRIG3 gene might be a novel alternative for the treatment of bladder cancer.