PMID- 18391468 OWN - NLM STAT- MEDLINE DCOM- 20080801 LR - 20131121 IS - 1347-6947 (Electronic) IS - 0916-8451 (Linking) VI - 72 IP - 4 DP - 2008 Apr TI - Oral administration of a hop water extract ameliorates the development of dermatitis induced by the periodical topical application of a mite antigen in atopic dermatitis model NC/Nga mice. PG - 974-81 AB - We investigated the inhibitory effect of an oral administration of a hop water extract (HWE) on the development of dermatitis by using NC/Nga atopic dermatitis model mice. The induction of allergic dermatitis was conducted by tape-stripping and topical application of a mite antigen (Dermatophagoides farinae) on to the ear once a week for 10 weeks. HWE was orally administered at a dose of 100 or 500 mg/kg. The total immunoglobulin E (IgE) concentration in serum and the ear thickness were periodically examined. Finally, the antigen-specific IgE level in the serum and the production of interleukin (IL)-4, IL-12 and interferon (IFN)-gamma from splenocytes and cervical lymph node cells were measured. The oral administration of HWE significantly inhibited the increase of total IgE production and ear swelling throughout the experimental period. The production of IL-12 was significantly lower in the HWE administered group than in the control group. The results suggest that the intake of HWE may be effective in preventing and alleviating the development of atopic dermatitis-like skin disease. FAU - Segawa, Shuichi AU - Segawa S AD - Frontier Laboratories of Value Creation, Sapporo Breweries Ltd, 10 Okatohme, Yaizu, Shizuoka 425-0013, Japan. syuuichi.segawa@sapporobeer.co.jp FAU - Kuroda, Hisao AU - Kuroda H FAU - Kaneko, Takafumi AU - Kaneko T FAU - Watari, Junji AU - Watari J LA - eng PT - Journal Article DEP - 20080407 PL - England TA - Biosci Biotechnol Biochem JT - Bioscience, biotechnology, and biochemistry JID - 9205717 RN - 0 (Antigens, Dermatophagoides) RN - 0 (Cytokines) RN - 0 (Plant Extracts) RN - 059QF0KO0R (Water) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Administration, Oral MH - Animals MH - Antibody Specificity MH - Antigens, Dermatophagoides/*immunology/metabolism MH - Cervix Uteri/cytology MH - Cytokines/metabolism MH - Dermatitis, Atopic/*immunology/metabolism/pathology/*prevention & control MH - Disease Models, Animal MH - Ear/pathology MH - Female MH - Humulus/*chemistry MH - Immunoglobulin E/blood/immunology MH - Lymph Nodes/drug effects MH - Macrophages/drug effects MH - Mice MH - Plant Extracts/*administration & dosage/*pharmacology MH - Spleen/cytology MH - Time Factors MH - Water/*chemistry EDAT- 2008/04/09 09:00 MHDA- 2008/08/02 09:00 CRDT- 2008/04/09 09:00 PHST- 2008/04/09 09:00 [pubmed] PHST- 2008/08/02 09:00 [medline] PHST- 2008/04/09 09:00 [entrez] AID - JST.JSTAGE/bbb/70695 [pii] AID - 10.1271/bbb.70695 [doi] PST - ppublish SO - Biosci Biotechnol Biochem. 2008 Apr;72(4):974-81. doi: 10.1271/bbb.70695. Epub 2008 Apr 7.