A lactic acid bacteria composition for inhibiting gastric Helicobacter pylori-induced gastritis and its application

A technology of Helicobacter pylori and lactic acid bacteria, applied in the direction of Lactobacillus, drug combination, and microbial-based methods, can solve the problems of inability to eradicate Helicobacter pylori infection, abnormal taste, and drug resistance of Helicobacter pylori

Active Publication Date: 2021-06-22
景岳生物科技(中国)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Helicobacter pylori is prone to develop resistance to antibiotics, so two antibiotics plus bismuth salts or proton pump inhibitors are currently administered in combination in a three-in-one or four-in-one therapy; the main side effects of these drugs are abnormal taste, Nausea, diarrhea, flatulence, headache, dizziness and other obvious side effects, if the patient stops the drug on his own, it is more likely to lead to drug resistance of Helicobacter pylori
Generally speaking, about 10-20% of patients cannot eradicate Helicobacter pylori infection due to the above reasons. Therefore, there is still room for improvement in the existing treatment of Helicobacter pylori infection

Method used

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  • A lactic acid bacteria composition for inhibiting gastric Helicobacter pylori-induced gastritis and its application
  • A lactic acid bacteria composition for inhibiting gastric Helicobacter pylori-induced gastritis and its application
  • A lactic acid bacteria composition for inhibiting gastric Helicobacter pylori-induced gastritis and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1. Screening of lactic acid bacteria that can be highly adsorbed to human gastric cells (AGS)

[0027] Human gastric epithelial cells AGS (ATCC CRL 1739) were co-cultured with activated lactic acid bacteria (bacterial infection dose MOI: 100) for 2 hours, then washed with PBS to remove unadsorbed bacteria, and stained with Giemsa stain. The number of lactic acid bacteria adsorbed on human gastric epithelial cells (AGS) was observed under a microscope to evaluate the strength of the adsorption of the strains.

[0028] figure 1 Observe under the visual field of the oil immersion lens, if more than 40 lactic acid bacteria strains are adsorbed on the cells (such as figure 1 shown in A), expressed by "++++", which means that the ability to bind to the cells is the strongest; more than 20 lactic acid bacteria strains are adsorbed on the cells (such as figure 1 shown in middle B), represented by "+++"; more than 10 lactic acid bacteria strains adsorbed on the cells (...

Embodiment 2

[0030] Example 2. Screening of lactic acid bacteria that can highly inhibit Helicobacter pylori-induced IL-8 secretion and NF-κB transcription factor-related inflammatory response

[0031] Gastric epithelial cells infected with Helicobacter pylori were co-cultured with different strains of lactic acid bacteria (13 strains selected in the previous step) for 16 hours, and then the expression of IL-8 was analyzed by ELISA method, and NF-κB-luciferase After the (NF-κB luciferase) construct was transfected into the gastric epithelial cells, and lactic acid bacteria and Helicobacter pylori were added to co-culture for 12 hours, the activity of the inflammatory response caused by Helicobacter pylori could be known by analyzing the activity of NF-κB-luciferase. And further analysis whether the lactic acid bacteria have inhibitory effect.

[0032] The analysis results are shown in Table 1. It can be seen from the table that Lactobacillus rhamnosus GM-020 (also known as GMNL-74, present...

Embodiment 4

[0044] Embodiment four, the composition of three strains of lactic acid bacteria has the effect of additively inhibiting antibiotic-sensitive HP or multidrug-resistant HP strains

[0045] The ability of lactic acid bacteria to resist Helicobacter pylori strains was analyzed by agar-well diffusion method and antibacterial test. The H.pylori pathogenic strains used include: H.pylori BCRC 26695 (ATCC700392): wild-type strain, sensitive to antibiotics metronidazole (metronidazole) and clarithromycin (clarithromycin); H.pylori v633: Resistance to the antibiotic metronidazole (MZ R ) and clarithromycin resistant (CH R ); H.pylori v2311: resistant to the antibiotic metronidazole (MZ R ), but sensitive to clarithromycin (CH S ). H.pylori were placed under microaerobic conditions (85% N 2 , 10% CO 2 , 5%O 2 ) and Brucella blood agar plate (BAP) culture medium, the pathogenic bacteria were scraped off and the concentration of pathogenic bacteria was adjusted to 1×10 with phosphat...

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Abstract

The invention relates to the field of health food, in particular to a lactic acid bacteria composition for inhibiting gastric Helicobacter pylori-induced gastritis and its application. The present invention provides a pharmaceutical composition and a food product for inhibiting gastric Helicobacter pylori-induced gastritis, which comprises lactic acid bacteria selected from Lactobacillus rhamnosus (Lactobacillus rhamnosus) GM-020, also known as GMNL-74, The deposit number is CCTCC NO: M203098; Lactobacillus acidophilus (Lactobacillus acidophilus) GMNL‑185, the deposit number is CCTCC NO: M2017764 and plant Lactobacillus (Lactobacillus plantarum) GMNL‑662, the deposit number is CCTCC NO: M2016571 and any two A group of the above combinations.

Description

technical field [0001] The invention relates to the field of health food, in particular to the use of a lactic acid bacteria composition for preparing a composition for inhibiting gastric Helicobacter pylori-induced gastritis. Background technique [0002] Helicobacter pylori (H.pylori) is a microaerophilic Gram-negative bacterium that may cause: gastric ulcer, duodenal ulcer, chronic gastritis ), gastric mucosa-associated lymphoma (mucosa-associated lymphoid tissuelymphoma), and even gastric adenocarcinoma (gastric adenocarcinoma)... and other gastrointestinal-related diseases. Helicobacter pylori mainly uses its urease to decompose urea to produce ammonia and carbon dioxide (CO 2 ), ammonia reacts with water to produce basic ammonium ions (NH4 + ) to neutralize gastric acid and increase the pH value of the mucosa to pH 4.5-7.0, so that bacteria can survive in the gastric environment for a long time (Eaton KA, Suerbaum S, Josenhans C and Krakowka S.1996). In addition, He...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20A61K35/747A61P1/04A23L33/135C12R1/23
CPCA61K35/747A61P1/04A23L33/135A23V2002/00C12R2001/23C12N1/205A23V2400/175A23V2400/113A23V2400/169A23V2200/3204A61K2300/00
Inventor 陈奕兴蔡宛桦陈雅惠赖志河林宥欣
Owner 景岳生物科技(中国)有限公司
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