Background: Gastric ulcer (GU) is a common digestive system disease, and the main clinical manifestations are nausea and epigastric pain. In recent years, due to increased life pressure, unhealthy eating habits and environment, the incidence of gastric ulcer has increased year by year. Because the disease has a long treatment cycle and is prone to relapse, if it cannot be controlled in time, it can cause the disease to prolong, affect the daily life and health of the patient, and even cause complications such as upper gastrointestinal bleeding, ulcer perforation, and pyloric obstruction. Helicobacter pylori infection is one of the main causes of GU. Clinically, the curative effect of western medicine or traditional Chinese medicine cannot reach the ideal level, so in recent years, the combination of traditional Chinese and western medicine has been highly praised. The aim of this systematic review is to evaluate the effectiveness and safety of Chinese medicine combined with omeprazole for GU. Methods: The data and information will be retrieved from the databases of PubMed, Embase, Cochrane Library, CNKI, VIP, and Wanfang data. Literature search is limited to Chinese and English. The search time range is from the establishment of the database to April 7, 2021. The search strategy uses a combination of subject terms and free words to search. In order to avoid omissions, the search scope includes subject terms, keywords, or full text. Two reviewers will independently exclude substandard articles and extract eligible data. The risk of bias will be assessed using the Cochrane Handbook 5.1.0 for Systematic Reviews of Interventions. RevMan 5.3 will be used for systematic review and meta-analysis. This protocol will be reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols (PRISMA-P) statement, and the systematic review will be reported with the PRISMA statement. Results and conclusion: The efficacy and safety of Chinese medicine combined with omeprazole for the treatment of GU will be evaluated, and the conclusion will be published to provide medical evidence for a better clinical decision of patients with GU.

Phytochemical investigation of fruits of Chaenomeles speciosa Lindley (Rosaceae) led to the isolation of 20 compounds including 5 flavonoids (1-5), 5 phenylpropanoids (6-10), 3 benzoic acid derivatives (11-13), 2 phloroglucinols (14 and 15), 2 purines (16 and 17), and 3 terpenoids (18–20). Their structures were elucidated by nuclear magnetic resonance analyses and from mass spectrometry data. These compounds were confirmed as catechin (1), epicatechin (2), catechin-5- O-β-d-glucoside (3), procyanidin B1 (4), quercetin-3- O-β-d-glucoside (5), p-coumaric acid (6), ferulic acid (7), caffeic alcohol (8), 1- O-p-coumaroyl-β-d-glucose (9), 1- O-cinnamoyl-β-d-glucose (10), p-hydroxybenzonic acid (11), protocatechuic acid (12), benzoic acid-β-d-gentiobioside (13), phloracetophenone 4′-glucoside (14), 3,5-dihydroxyphenyl β-d-glucopyranoside (15), adenine (16), adenosine (17), betulalbuside A (18), vomifoliol (19), and roseoside (20). Compounds 3-5, 8, 10, and 13-18 were isolated from the genus Chaenomeles and C. speciosa for the first time. Out of all these, compound 17 showed the best anti-inflammatory properties, comparable with those of the already known minocycline.

Review question / Objective: In order to further clarify its clinical application value, t h i s s t u d y a d o p t s t h e m e t h o d s o f systematic review andMeta analysis to comprehensively evaluate the effectiveness and safety of traditional Chinese medicine combined with omeprazole in the treatment of GU, and provide evidence-based basis for its rational use in clinical practice. Condition being studied: Gastric ulcer (GU) is a chronic digestive system disease with a high clinical incidence and recurrence rate. The clinical manifestations are upper INPLASY 1

Among the large group of natural polyphenolic flavonoids, acacetin is widely distributed throughout the plant kingdom and remained the part of the food and traditional medication systems across the globe. Acacetin is found naturally in more than 200 plant species belongs to 60 different plant families, but mostly in Asteraceae and Lamiaceae families in the genus of Artemisia, Cirsium, Dendranthema, Saussurea, Dracocephalum, and Origanum. In Traditional Chinese Medicine (TCM) system, plant extracts having acacetin with various biological activities are given to cure different ailments including microbial or viral infections, cardiovascular issues, blood glucose fluctuations or diabetes, neurological and immunological disorders, hyperlipidemia, chronic inflammations, cancers or tumor control, hepatic issues, and lot more to count. Acacetin mainly exerts its remarkable effects both at transcriptional as well as translational levels. Acacetin suppressed the phosphorylation of p38 mitogen-activated protein kinases (MAPKs) and nuclear factor (NF)-κB, and reduces lipid peroxidation through reactive oxygen species (ROS) scavenging capability. For many proteins and enzymes, acacetin directly binds with them to regulate their activities, and hence acts as a potent inhibitor of that particular function such as inhibition of sortase enzyme, translational protein enzymes, aldose reductase enzyme, inhibition of cell signaling channels and molecules, and much more. It is concluded that acacetin has the potential to use as a potent inhibitor of multiple proteins, enzymes, signaling molecules and ion channels. These properties make acacetin an appealing candidate to be designed and screened for use as a multipurpose inhibitor for diseases.