Analysis of Changes of Intestinal Flora in Elderly Patients with Alzheimer’s Disease and Liver Cancer and Its Correlation with Abnormal Gastrointestinal Motility

Objective. To investigate the changes of intestinal flora in elderly patients with Alzheimer’s disease and liver cancer and its correlation with abnormal gastrointestinal motility. Methods. From January 2018 to December 2020, 102 elderly patients with Alzheimer’s disease and liver cancer were selected as the observation group. Eighty-nine healthy patients during the same period were selected as the control group. The two groups of intestinal flora (intestinal microbial diversity) were detected by real-time fluorescent quantitative PCR (RT-qPCR) and high-throughput sequencing. The two groups of serum motilin (MTL) and gastrin (GAS) levels were measured by the Hitachi automatic biochemical analyzer 7600. Pearson correlation analysis software was used to analyze the relationship between changes in the intestinal flora and gastrointestinal motility in elderly patients with Alzheimer’s disease and liver cancer. Results. The contents of Bifidobacteria and Lactobacilli in the observation group were lower than those in the control group, and the contents of Escherichia coli, Helicobacter pylori, and Streptococcus were higher than those in the control group. The Chaol index and Shannon index in the observation group were higher than those in the control group. The gastrointestinal motility levels MTL and GAS of the observation group were higher than those of the control group. The results of Pearson correlation analysis showed that the Chaol index and Shannon index of elderly patients with Alzheimer’s disease and liver cancer were positively correlated with MTL and GAS. Conclusion. Elderly patients with Alzheimer’s disease and liver cancer often have changes in the intestinal flora, which are correlated with abnormal gastrointestinal motility. Strengthening the analysis of changes in patients’ intestinal flora can enhance clinical medication knowledge and improve gastrointestinal motility in patients.