AI Article Synopsis
- A study investigated changes in the incidence of gastric cancer (GC), particularly focusing on signet ring cell carcinoma (SRC) and non-signet ring cell carcinoma (NSRC), comparing these trends with H. pylori infection rates over time.
- The analysis included 2532 patients with GC from a hospital registry, revealing that SRC patients tended to be younger and more female compared to NSRC patients, with a significant decline in SRC incidence over time.
- The study suggested a potential link between reduced H. pylori infection prevalence and the decreasing rates of SRC, while NSRC incidence remained stable.
Article Abstract
Background: Studies indicate that gastric cancer (GC) incidence has decreased, whereas signet ring cell carcinoma (SRC) incidence has increased. However, recent trends in GC incidence are unclear. We used our hospital cancer registry to evaluate the changes in the incidence of GC, SRC, and non-SRC (NSRC) over time in comparison to changes in the H. pylori infection rates over time.
Methods: We identified 2532 patients with GC enrolled in our registry between January 2007 and December 2018 and statistically analyzed SRC and NSRC incidence. The H. pylori infection rate in patients with SRC was determined by serum anti-H. pylori antibody testing, urea breath test, biopsy specimen culture, and immunohistochemical analysis (IHC) of gastric tissue. Additionally, genomic detection of H. pylori was performed in SRCs by extracting DNA from formalin-fixed paraffin-embedded gastric tissue and targeting 16S ribosomal RNA of H. pylori.
Results: Overall, 211 patients had SRC (8.3%). Compared with patients with NSRC, those with SRC were younger (P < 0.001) and more likely to be female (P < 0.001). Time series analysis using an autoregressive integrated moving average model revealed a significant decrease in SRC (P < 0.001) incidence; NSRC incidence showed no decline. There was no difference in H. pylori infection prevalence between the SRC and NSRC groups. IHC and genomic methods detected H. pylori in 30 of 37 (81.1%) SRCs.
Conclusions: Reduction in H. pylori infection prevalence may be associated with the decrease in the incidence of SRC, which was higher than that of NSRC.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6842265 | PMC |
| http://dx.doi.org/10.1186/s12876-019-1094-x | DOI Listing |
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