胃黏膜细胞中Foxp3、TGF-β1、IL-10的表达及其与幽门螺杆菌感染的关系

A comprehensive update: gastrointestinal microflora, gastric cancer and gastric premalignant condition, and intervention by traditional Chinese medicine

With the recent upsurge of studies in the field of microbiology, we have learned more about the complexity of the gastrointestinal microecosystem. More than 30 genera and 1000 species of gastrointestinal microflora have been found. The structure of the normal microflora is relatively stable, and is in an interdependent and restricted dynamic equilibrium with the body. In recent years, studies have shown that there is a potential relationship between gastrointestinal microflora imbalance and gastric cancer (GC) and precancerous lesions. So, restoring the balance of gastrointestinal microflora is of great significance. Moreover, intervention in gastric premalignant condition (GPC), also known as precancerous lesion of gastric cancer (PLGC), has been the focus of current clinical studies. The holistic view of traditional Chinese medicine (TCM) is consistent with the microecology concept, and oral TCM can play a two-way regulatory role directly with the microflora in the digestive tract, restoring the homeostasis of gastrointestinal microflora to prevent canceration. However, large gaps in knowledge remain to be addressed. This review aims to provide new ideas and a reference for clinical practice.

Clinical significance of Helicobacter pylori in the grouth of ulcerative colitis

AIM

To investigate the relationship between Helicobacter pylori (H. pylori) infection and ulcerative colitis (UC).

METHODS

One hundred and forty-six patients with UC diagnosed by colonoscopy and pathological examination were selected as a UC group. In addition, 150 volunteers who had no obvious colonic lesions as detected by electronic colonoscopy were collected as a control group. Rapid urease test and histopathological biopsy were used to detect H. pylori infection.

RESULTS

In UC Group, 146 cases, 27 positive, H. pylori infection positive rate of 18.49%, control group of 150 cases, 64 positive, H. pylori infection positive rate 42.67%, UC group is significantly lower than the control group, the difference is statistically significant (P < 0.05). According to lesion Range: Rectal Group 27 cases, 7 positive, H. pylori positive rate is 21.88%, left half colon group 48 cases, 9 cases positive, H. pylori positive rate is 18.75%, extensive colon group 66 cases, 11 cases positive, H. pylori positive rate is 16.67%. There was no statistically significant difference among the three groups (P > 0.05). Active period of UC patients in 117 cases (80.14%), remission period of UC patients in 29 cases. The positive rate of H. pylori infection was the highest in remission period (37.93%), the lowest rate of severe activity was (6.25%), the difference was obvious (P < 0.05).

CONCLUSION

H. pylori infection may have a preventive effect on the grouth of UC, with the severity of the disease increasing, the H. pylori positive rate decreased. In addition, it will be very important to strengthen the follow-up compliance of UC patients.

Relationship between gastrointestinal flora and chronic atrophic gastritis

Large amounts of intestinal flora are living in the gastrointestinal tract and have a close relationship with human health. The imbalance of gastrointestinal flora can lead to various gastrointestinal diseases, including chronic atrophic gastritis (CAG). CAG is a common gastrointestinal disease caused by a combination of many factors. In recent years, more and more studies have been performed to investigate the relationship between gastrointestinal flora and CAG. This paper summarizes their relationship in terms of the pathogenic mechanism and eradication of Helicobacter pylori, and the physiological function and anti-inflammatory mechanism of Lactobacillus and Bifidobacterium, with an aim to help better understand the pathogenesis and clinical treatment of CAG.