Effects of garlic oil and two of its major organosulfur compounds, diallyl disulfide and diallyl trisulfide, on intestinal damage in rats injected with endotoxin.

Abstract:

:Garlic and its active components are known to possess antioxidant and antiinflammatory effects. The present study investigated the effects of garlic oil and its organosulfur compounds on endotoxin-induced intestinal mucosal damage. Wistar rats received by gavage 50 or 200 mg/kg body weight garlic oil (GO), 0.5 mmol/kg body weight diallyl disulfide or diallyl trisulfide, or the vehicle (corn oil; 2 ml/kg body weight) every other day for 2 weeks before being injected with endotoxin (i.p., 5 mg/kg body weight). Control rats were administered with corn oil and were injected with sterile saline. Samples for the measurement of proinflammatory cytokines were collected 3 h after injection, and all other samples were collected 18 h after injection. The low dose of GO suppressed endotoxin-induced inducible nitric oxide synthase (iNOS) activity, ulceration, and apoptosis in the intestinal mucosa (P < 0.05). The high dose of GO significantly lowered the peripheral level of nitrate/nitrite and endotoxin-induced iNOS activity in the intestinal mucosa (P < 0.05) but worsened intestinal mucosal damage accompanied by elevated peripheral proinflammatory cytokines. Diallyl trisulfide but not diallyl disulfide showed similar toxic effect as that of high-dose GO. These results suggest the preventive effect and possible toxicity of garlic oil and its organosulfur compounds in endotoxin-induced systemic inflammation and intestinal damage.

journal_name

Toxicol Appl Pharmacol

authors

Chiang YH,Jen LN,Su HY,Lii CK,Sheen LY,Liu CT

doi

10.1016/j.taap.2005.08.008

subject

Has Abstract

pub_date

2006-05-15 00:00:00

pages

46-54

issue

1

eissn

0041-008X

issn

1096-0333

pii

S0041-008X(05)00534-X

journal_volume

213

pub_type

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