Objective: To investigate the clinical characteristics of and factors related to relapse in chronic hepatitis B (CHB) patients who had previously achieved cessation criteria and had been withdrawn from nucleoside analogues treatment.
Methods: Sixty CHB patients who experienced relapse after nucleoside analogues withdrawal based on cessation criteria were enrolled in the study retrospectively. Each patient's data on biochemical, serological and viral characteristics corresponding to baseline (treatment initiation), withdrawal and relapse were collected. COX proportional hazard modeling was used to evaluate the factors related to relapse.
Results: The hepatitis B e antigen (HBeAg)-positive and -negative patients had similar median antiviral treatment times (38 months (range: 24 - 80) vs. 35 months (30 - 60); Z = -1.313, P more than 0.05). For all patients, the median follow-up time was 12 months (2 - 72), during which 49 (81.7%) patients developed virological breakthrough and 17 (28.3%) developed HBeAg recurrence. The patients who experienced virological breakthrough or HBeAg recurrence had significantly higher baseline levels of HBV DNA than those patients who remained disease-free (t = 2.15 and -2.54 respectively; P less than 0.05). The median relapse time of the HBeAg-positive patients was significantly longer than that of the HBeAg-negative patients (14 months (3 - 72) vs. 6 months (3 - 36); Chi-square test = 7.045, P less than 0.01). HBeAg status at baseline was identified as an independent factor associated with relapse (relative risk = 1.937, 95% confidence interval = 1.14-3.28, P less than 0.05).
Conclusion: HBeAg-positive and-negative patients showed distinct clinical characteristics of relapse, with the latter being more prone to relapse soon after nucleoside analogues withdrawal. Prolonging the treatment course may be beneficial to HBeAg-negative patients, even if cessation criteria are achieved.
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http://dx.doi.org/10.3760/cma.j.issn.1007-3418.2013.11.007 | DOI Listing |
Nucleosides Nucleotides Nucleic Acids
January 2025
Department of Chemistry and Centre for Biotechnology, Brock University, St. Catharines, ON, Canada.
Contamination of sodium ions in oligonucleotides often causes issues in mass spectrometric analysis. This study investigated the efficiency of the combination of ammonium acetate and alcohol in desalting oligonucleotides. It was found that oligonucleotide samples containing up to 4 M NaCl can be effectively desalted through precipitation with ethanol or isopropanol in the presence of 1 or 5 M ammonium acetate.
View Article and Find Full Text PDFAnal Cell Pathol (Amst)
January 2025
Department of Urology, The First Hospital of Jilin University, Changchun, China.
This study aims to study how gold nanoparticles (AuNPs) function in the recruitment and polarization of tumor-associated macrophages (TAMs) in hormone-sensitive prostate cancer (HSPC) and castration-resistant prostate cancer (CRPC). Phorbol ester (PMA)-treated THP-1 cells were cocultured with LNCaP or PC3 cells to simulate TAMs. Macrophage M2 polarization levels were detected using flow cytometry and M2 marker determination.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-Ku, Kyoto 606-8502, Japan.
We studied the vibrational coherences during the ultrafast internal conversions (ICs) of pyrimidine nucleobases and -sides in aqueous solutions and the gas phase with an instrumental resolution of 14 fs. The coherence of the same ring-breathing vibrational mode with a frequency of 750 cm was observed. In the gas phase, the vibrational coherence was transferred during IC from the ππ* to the nπ* state, and it survived for approximately 1 ps.
View Article and Find Full Text PDFInt J Colorectal Dis
January 2025
Department of Surgery, Japan Community Healthcare Organization Tokuyama Central Hospital, 1-1 Koda-Cho, Shunan, Yamaguchi, 745-0822, Japan.
Purpose: We aimed to identify the risk factors for severe neutropenia in the early phase of trifluridine-tipiracil (FTD/TPI) treatment, and their impact on overall survival (OS).
Methods: This single-center retrospective study included patients with unresectable metastatic colorectal cancer who were treated with FTD/TPI. The primary endpoint was OS, and the secondary endpoint was severe neutropenia during the first and second cycles of FTD/TPI.
J Biomed Sci
January 2025
Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, China.
Background: Recent studies indicate that N6-methyladenosine (mA) RNA modification may regulate ferroptosis in cancer cells, while its molecular mechanisms require further investigation.
Methods: Liquid Chromatography-Tandem Mass Spectrometry (HPLC/MS/MS) was used to detect changes in mA levels in cells. Transmission electron microscopy and flow cytometry were used to detect mitochondrial reactive oxygen species (ROS).
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