[Variation Characteristics and Source Analysis of Atmospheric Ozone Pollution in Guanzhong Region].

Guanzhong urban agglomeration has a good development foundation and great development potential, and it has a unique strategic position in the national all-round opening up pattern. In recent years, the problem of near-surface ozone （O） in the Guanzhong Region has become increasingly prominent, which has become a bottleneck affecting the continuous improvement of air quality. In order to effectively prevent and control O pollution, this study analyzed the characteristics of annual, monthly, and daily changes in O concentration in the Guanzhong Region based on the environmental monitoring data from 2018 to 2021.

[Research Progress in Diagnostic Reference Levels in Interventional Radiology].

During interventional procedures,subjects are exposed to direct and scattered X-rays.Establishing diagnostic reference levels is an ideal way to optimize the radiation dose and reduce radiation hazard.In recent years,diagnostic reference levels in interventional radiology have been established in different countries.

The 96-week clinical outcomes after cessation of nucleos(t)ide analog treatment in chronic hepatitis B patients.

Background: Chronic hepatitis B (CHB) patients have a high virological relapse rate after cessation of nucleos(t)ide analog (NA) treatment, but the clinical outcome remains unclear. This study aimed to investigate the 96-week clinical outcomes and the risk factors for relapse in CHB after cessation of NAs.

Methods: This study was a prospective trial; 74 eligible patients were enrolled.

[Effects of CeA lesions on the initiation and expression of sodium appetite in sodium-deficient rats].

Objective: To investigate the effects of central nucleus of amygdala (CeA) lesion on the initiation and expression of sodium appetite in sodium-deficient rats.

Methods: Three groups of SD rats (n=6 in each group) were treated with bilateral CeA lesion, sham lesion or no lesion. After the recovery, the rats were fed with low-sodium diets for 14 days to establish a sodium-deficient rat model.

Ursolic Acid Prevents Retinoic Acid-Induced Bone Loss in Rats.

Objective: To examine the effects of ursolic acid (UA) on mitigating retinoic acid (RA)-induced osteoporosis in rats.

Methods: Fifty female Sprague-Dawley rats were randomly divided into the control group (n=10) and the osteoporosis group (n=40). The 40 osteoporosis rats were induced by 75 mg/(kg•d) RA once daily for 2 weeks, and then were randomly assigned to vehicle control (model), low-, middle-, and high-dose UA [(UA-L, UA-M, UA-H; 30, 60, 120 mg/(kg•d), respectively] groups (10 rats each).

[Dynamics of routine blood tests in BALB/c mice with infection].

Objective: To understand the changes in body weight, spleen weight and complete blood cells in BALB/c mice infected with .

Methods: For the infection group, six weeks old BALB/c mice were injected intraperitoneally with a dose of 100 μL of infected blood (20% RBC infection rate, each mouse). For the determination of the progression of infection up to 28 days of the infection, the microscopic visualization of thin blood smears of tail blood stained with Giemsa staining was performed in the infection group.

48-Week Outcome after Cessation of Nucleos(t)ide Analogue Treatment in Chronic Hepatitis B Patient and the Associated Factors with Relapse.

Background And Aims: We aimed to ascertain the feasibility and safety of NA cessation, the status of patients after cessation, and the predictive factors for relapse and subsequent retreatment.

Methods: A total of 92 patients were enrolled in this prospective study. Patients were monitored every month for the first 3 months after cessation and every 3 months thereafter.

Hepatitis C virus load in parenchyma cells correlates with hepatic injury in infected patients.

The association between serum hepatitis C virus (HCV) load and hepatic injury in HCV-infected patients has been extensively investigated. The present study aimed to investigate the association between HCV load in hepatic parenchyma cells and hepatic injury in HCV-infected patients. A total of 56 HCV-infected patients were included in the present retrospective study.

An albumin, collagen IV, and longitudinal diameter of spleen scoring system superior to APRI for assessing liver fibrosis in chronic hepatitis B patients.

Objectives: The aim of this study was to screen the non-invasive indexes correlated with liver fibrosis and establish a scoring system for the diagnosis of liver fibrosis in hepatitis B patients.

Methods: Data of 34 non-invasive indexes were collected for 208 hepatitis B patients. Correlation analysis and stepwise discriminant analysis was used to screen out indexes useful for the diagnosis of liver fibrosis.

Expansion of myeloid-derived suppressor cells from peripheral blood decreases after 4-week antiviral treatment in patients with chronic hepatitis C.

Myeloid-derived suppressor cells (MDSCs) are one of the most important regulators of anti-tumor T-cell responses in cancers. This study aimed to investigate MDSCs in the peripheral blood of patients with chronic hepatitis C (CHC) before and after 4-week treatment with pegylated interferon (PEG-IFN) and ribavirin, and to evaluate their correlation with CD4(+)CD25(high) regulatory T cells (Tregs) and clinical parameters. A total of 80 patients with CHC were enrolled into this study, 37 of whom were treated with PEG-IFN and ribavirin.

Prevalence of IL-28B and ITPA genotypes in Chinese Han population infected persistently with hepatitis C virus genotype 6 or HCV-1.

The geographic distribution, demographics, epidemiology, host factors, and clinical characteristics of persistent HCV-6 infection in China need further characterization. This multicenter study enrolled 63 patients with persistent HCV-6 infection and 63 patients with persistent HCV-1 infection as controls. Blood biochemistry, quantitation of HCV RNA levels, and identification of host IL-28B genotypes (rs12979860, rs8099917, and rs12980275) and ITPA genotype (rs1127354) were performed to estimate potential variability in host factors that may affect response to treatment.

[Genetic polymorphisms of IL-28B are associated with sustained virologic response in patients with chronic hepatitis C].

Objective: To explore the relationship between polymorphism in the interleukin (IL)-28B gene and sustained virologic response (SVR) in chronic hepatitis C (CHC) patients.

Methods: A total of 220 patients with CHC were prospectively treated with pegylated-interferon (peg-IFN) in combination with ribavirin (RBV) for 48 weeks, and followed-up for an additional 24 weeks. All patients were genotyped for the rs8099917 polymorphism and correlations with antiviral efficacy were determined by statistical analysis.

A Novel prognostic scoring system to predict 3-month mortality risk in patients with acute-on-chronic liver failure in hepatitis B: a retrospective cohort study.

Purpose: The present study was done to establish an objective, sensitive prognostic scoring system and to determine the applicability of this model in predicting the 3-month mortality of patients with acute-on-chronic liver failure in hepatitis B (ACLFB).

Methods: We developed a novel prognostic scoring system, calculated from six clinical indices including serum total bilirubin, prothrombin activity, serum creatinine, hepatic encephalopathy, infections, and the depth of ascites from 499 patients with ACLFB. Differences in the sensitivity, specificity, and practicality of a Novel prognostic scoring system and the model of end-stage liver disease (MELD) were analyzed.

Effect of healthcare insurance policy on the quality of life of chronic hepatitis C patients receiving interferon α-2a plus ribavirin therapy.

The aim of this study was to evaluate the effect of pegylated interferon α-2a plus ribavirin therapy on the quality of life (QOL) of chronic hepatitis C patients when this treatment was paid for by healthcare insurance. The QOL questionnaire (GQOLI-74) was used to assess patient QOL. A total of 42 cases received 1-year pegylated interferon α-2a plus ribavirin treatment paid for by Guangzhou Medical Insurance (group A), and 30 cases received treatment self-subsidized by the patients themselves (group B).

Characterization of genetic rearrangements in esophageal squamous carcinoma cell lines by a combination of M-FISH and array-CGH: further confirmation of some split genomic regions in primary tumors.

Background: Chromosomal and genomic aberrations are common features of human cancers. However, chromosomal numerical and structural aberrations, breakpoints and disrupted genes have yet to be identified in esophageal squamous cell carcinoma (ESCC).

Methods: Using multiplex-fluorescence in situ hybridization (M-FISH) and oligo array-based comparative hybridization (array-CGH), we identified aberrations and breakpoints in six ESCC cell lines.

Relationship between the genetic variation in interleukin 28B and response to antiviral therapy in patients with chronic hepatitis C.

Background: Genetic variations at the interleukin 28B (IL-28B) locus are important in predicting outcome following therapy for chronic hepatitis C virus (HCV) infection. The aim of this research was to evaluate the role of IL-28B single nucleotide polymorphism (SNP) variations in Chinese patients undergoing pegylated interferon-α plus ribavirin (PEG-IFN-α/RBV) treatment.

Methods: To determine the effect of IL-28B variation on the response to HCV therapy, these variants were genotyped in a cohort of 220 patients who were chronically infected with HCV and received combined PEG-IFN-α/RBV therapy.

[Quality of life in patients with chronic hepatitis C after PEG-Interferon a-2a therapy].

Objective: To evaluate the quality of life (QOL) in the patients with chronic hepatitis C (CHC) after PEG-Interferon a-2a therapy.

Methods: A study based on 102 CHC patients (group A, before PEG- Interferon a-2a therapy, T0) and 44 healthy persons (group B) was carried out using the general quality of life inventory (GQOLI-74) questionnaire, and QOL were compared between the two groups. Patients in group A were divided into subgroup A1 (72 patients ) which was given PEG-Interferon a-2a plus Ribavirin for one year and subgroup A2 (30 patients) without any antivirus therapy.

[A five-year follow-up of one hundred and thirty-six patients of hepatitis C].

Objective: To investigate the clinical outcome and effect of interferon treatment on patients with chronic hepatitis C.

Methods: 136 cases of patients with chronic hepatitis C were followed up by methods of retrospective survey combined with prospective study. SPSS16.

Diethylene glycol poisoning and liver function following accidental diethylene glycol injection.

The aim of the present study was to investigate the hepatotoxic effects of accidental intravenous diethylene glycol (DEG) poisoning in patients with liver disease. Clinical manifestations were recorded and liver function tests were carried out for 64 patients with liver disease who had been accidentally treated intravenously with DEG. Comparisons were made between the poisoned and non-poisoned groups.

[MiR-196a-2 gene polymorphism and the antiviral therapy of chronic hepatitis C].

Objective: To investigate the relationship between the SNP rs11614913 on miR196a-2 gene and the treatment effects of Peg-IFN-a plus Ribavirin on chronic hepatitis C patients.

Methods: The total 139 patients of chronic hepatitis C infection who received the treatment of Peg-IFN-alpha-2a or Peg-IFN-alpha-2b plus Ribavirin were enrolled in this study. The patients were divided into two groups: sustained virological response (SVR) (n = 82) group and non virological response (NVR) or recurrence (n = 57) group.