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Electroacupuncture protects acetylsalicylic acid-induced acute gastritis in rats
March 03, 2009Nonsteroidal anti-inflammatory drugs (NSAIDs) are widely used as anti-inflammatory and analgesic agents. However, they often cause gastrointestinal injury in gastric lesions by inhibiting COX (cyclooxygenase) and detailed mechanism remains unclear. Thus, effective strategies are required to protect the gastrointestinal mucosa.
A research article to be published on February 28, 2009 in the World Journal of Gastroenterology addresses this question. The research team led by Dr. Choi from Korea Institute of Oriental Medicine investigated the protective effects of acupuncture against NSAID-induced ulceration in a rat model.
In their study, 72 rats were randomly divided into three groups including control (administered with distilled water), ASA group (administered 100 mg/kg ASA) and EA group (administered EA + 100 mg/kg ASA). Each rat was fasted for 18 to 24hours before experimentation, and lesion scores, gastric acidity, cyclooxygenase (COX)-1 and -2 mRNA levels, and total nitric oxide (NO) concentration were measured.
They found that the lesion scores of the EA group were significantly lower than those of the NSAID-induced ulceration group. Gastric acidity of NSAID-induced ulceration group and EA group was reduced as compared to the control group. COX-1 and -2 mRNA levels were significantly increased in the EA group as compared to the control and NSAID-induced ulceration group, and NO levels were also significantly increased in the EA group as compared to the NSAID-induced ulceration group.
The inducible expression of COX-1 in the early phase and COX-2 in the late phase suggests that EA pretreatment might up-regulate the mucosal defense mechanism. The total NO concentration in the EA group was significantly increased with respect to that of the NSAID-induced ulceration group. The total NO likely protected the gastric mucosa against NSAID-induced toxicity. In conclusion, EA-mediated protection against ASA-induced ulceration in rats may occur via gastric defense components.
By understanding the time-dependent expression of COX by EA pretreatment, this study may represent a future strategy for acupuncture therapeutic intervention in the treatment of patients with gastritis by Non-steroidal anti-inflammatory drugs.
World Journal of Gastroenterology
They found that the lesion scores of the EA group were significantly lower than those of the NSAID-induced ulceration group. Gastric acidity of NSAID-induced ulceration group and EA group was reduced as compared to the control group. COX-1 and -2 mRNA levels were significantly increased in the EA group as compared to the control and NSAID-induced ulceration group, and NO levels were also significantly increased in the EA group as compared to the NSAID-induced ulceration group.
The inducible expression of COX-1 in the early phase and COX-2 in the late phase suggests that EA pretreatment might up-regulate the mucosal defense mechanism. The total NO concentration in the EA group was significantly increased with respect to that of the NSAID-induced ulceration group. The total NO likely protected the gastric mucosa against NSAID-induced toxicity. In conclusion, EA-mediated protection against ASA-induced ulceration in rats may occur via gastric defense components.
By understanding the time-dependent expression of COX by EA pretreatment, this study may represent a future strategy for acupuncture therapeutic intervention in the treatment of patients with gastritis by Non-steroidal anti-inflammatory drugs.
World Journal of Gastroenterology
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Modifying the risk of peripheral arterial disease (or PAD)-with healthy lifestyle changes-remains vital to one's health, note researchers in a recent issue of the Journal of Vascular and Interventional Radiology.
A potential anti-ulcer herb medicine: Rocket 'Eruca sativa'
Gastric ulcer is an illness that affects a considerable number of people worldwide. Although the introduction of proton-pump inhibitors to the classic anti-ulcer therapy has revolutionized treatment of peptic ulcers and other gastrointestinal disorders, there is still no complete cure for this disease.
Patients with GI bleeding admitted on the weekend have higher death rate
Previous studies have raised questions regarding differences in quality of care for patients hospitalized on a weekend compared to weekdays. In fact, a growing body of health services research has demonstrated an association between admission to hospitals on the weekend and increased mortality. This "weekend effect" has been attributed to reduced hospital staffing and access to specific intensive treatments and procedures.
Infliximab may help prevent post-operative Crohn's disease recurrence
The administration of infliximab after intestinal resective surgery was found to be effective at preventing endoscopic and histological recurrence of Crohn's disease, according to a new study in Gastroenterology, the official journal of the American Gastroenterological Association (AGA) Institute.
Helicobacter pylori can multiply in autophagic vesicles
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STDs disrupt genetic bottleneck that usually constrains HIV infection
Scientists have shown that HIV faces a genetic "bottleneck" when the virus is transmitted heterosexually from one person to another, by way of the genital mucosa.
Identification of genetic markers for ulcerative colitis could lead to treatment
An international consortium of researchers, including major contribution from a team led by Dr. John D. Rioux, a professor of medicine at the Université de Montréal and the Montreal Heart Institute, has identified genetic markers associated with risk for ulcerative colitis.
New genetic markers for ulcerative colitis identified, researchers report in Nature Genetics
An international team led by University of Pittsburgh School of Medicine researchers has identified genetic markers associated with risk for ulcerative colitis.
Pneumatosis cystoids intestinalis after fluorouracil chemotherapy
The mechanism of pneumatosis cystoids intestinalis (PCI) is unclear. The mechanical and bacterial factors are most predominant causes of PCI.
CAPHOSOL relieves oral mucositis and improves quality-of-life in cancer patients
New data show that CAPHOSOL® (www.caphosol.com), an advanced electrolyte solution, relieves painful oral mucositis (OM) and improves quality of life for cancer patients undergoing chemotherapy and radiation therapy.
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