Anti-inflammatory effects of methanol extract of Patrinia scabiosaefolia in mice with ulcerative colitis.
BACKGROUND
Patrinia scabiosaefolia Fisch is used in folk medicines to treat intestinal abscesses, acute appendicitis, and dysentery in Asia. Although recent reports indicate that Patrinia scabiosaefolia has sedative and anti-tumor effects, its effects on ulcerative colitis have not been previously explored.


OBJECTIVE
To determine the effects and the mode of action of the methanol extract of the roots of Patrinia scabiosaefolia (PME) on a model of colitis in mice induced by dextran sulfate sodium (DSS).


METHODS
We induced colitis using DSS in 5-week-ICR mice over 7 days and estimated disease activity index (DAI), which took into account body weight, stool consistency, gross bleeding, and tissue myeloperoxidase (MPO) accumulation. Colon lengths and spleen weights were measured. Histological changes were observed by H&E staining. Pro-inflammatory mediators, namely, nitric oxide (NO), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6), were determined using Griess assays, immunoassays, and by quantitative real-time reverse-transcriptase polymerase chain reaction (qRT-PCR), respectively.


RESULTS
PME significantly attenuated DSS-induced DAI scores and tissue MPO accumulation, which implied that it suppressed weight loss, diarrhea, gross bleeding, and the infiltrations of immune cells. PME administration also effectively and dose-dependently prevented shortening of colon length and enlargement of spleen size. Histological examinations indicated that PME suppressed edema, mucosal damage, and the loss of crypts induced by DSS. Furthermore, PME inhibited the abnormal secretions and mRNA expressions of pro-inflammatory cytokines, such as, TNF-α, IL-1β, and IL-6.


CONCLUSIONS
These results suggest that PME has an anti-inflammatory effect at colorectal sites that is due to the down-regulations of the productions and expressions of inflammatory mediators, and that it may have therapeutic value in the setting of inflammatory bowel disease (IBD).
Cho
Eu-jin
EJ
Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Dongdaemun-Ku, Hoegi-Dong, Seoul, Republic of Korea.
Shin
Ji-Sun
JS
Noh
Young-Su
YS
Cho
Young-Wuk
YW
Hong
Seung-Jae
SJ
Park
Jae-Hoon
JH
Lee
Jae Yeol
JY
Lee
Jin-Yong
JY
Lee
Kyung-Tae
KT
D000818:Animals; D000893:Anti-Inflammatory Agents / Q000494:pharmacology / Q000627:therapeutic use*; D002634:Chemotaxis, Leukocyte / Q000187:drug effects; D003093:Colitis, Ulcerative / Q000188:drug therapy* / Q000378:metabolism / Q000473:pathology; D003106:Colon / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology; D016207:Cytokines / Q000235:genetics / Q000378:metabolism; D016264:Dextran Sulfate; D003967:Diarrhea / Q000517:prevention & control; D004305:Dose-Response Relationship, Drug; D004487:Edema / Q000517:prevention & control; D006470:Hemorrhage / Q000517:prevention & control; D007413:Intestinal Mucosa / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D009929:Organ Size / Q000187:drug effects; D032405:Patrinia; D009195:Peroxidase / Q000378:metabolism; D008517:Phytotherapy; D010936:Plant Extracts / Q000494:pharmacology / Q000627:therapeutic use*; D018517:Plant Roots; D012333:RNA, Messenger / Q000378:metabolism; D013154:Spleen / Q000187:drug effects; D015431:Weight Loss
D000893:Anti-Inflammatory Agents; D016207:Cytokines; D010936:Plant Extracts; D012333:RNA, Messenger; D016264:Dextran Sulfate; D009195:Peroxidase