PMID- 27413998 OWN - NLM STAT- MEDLINE DCOM- 20170928 LR - 20220331 IS - 1547-6901 (Electronic) IS - 1547-691X (Linking) VI - 13 IP - 5 DP - 2016 Sep TI - Effects of thymol and carvacrol on T-helper cell subset cytokines and their main transcription factors in ovalbumin-immunized mice. PG - 729-37 LID - 10.3109/1547691X.2016.1173134 [doi] AB - Thymol and carvacrol, two main components of thyme, have several valuable effects on the immune system. This study aims to evaluate the effects of these components on T-helper (TH) cell responses and their subsets in mice immunized with ovalbumin. The effects of these components on: a specific in vivo immune response were evaluated by assessing changes in delayed-type hypersensitivity (DTH); ex vivo splenocyte proliferative responses were evaluated using a BrdU assay gene expression of cytokines and key transcription factors involved in T-cells subset differentiation among the mouse splenocytes were assessed using real-time polymerase chain reaction (PCR); and splenocyte cytokine formation (ex vivo) and levels of the cytokines in mouse sera were measured by ELISA. Mice treated with thymol or carvacrol had reduced DTH responses (26% and 50%, respectively) compared with control mice. Thymol and carvacrol each diminished splenocyte proliferation to nearly 65-72% of control levels (p < 0.01). These agents also led to decreased TH1 [interleukin (IL)-2, interferon (IFN)-gamma)], TH2 (IL-4) and TH17 (IL-17A) levels in the splenocyte cultures and in the sera of mice but increased levels of IL-10 and transforming growth factor (TGF)-beta. Treated immunized mice showed significantly reduced T-box 21 (T-bet) expression from 3.8 [+/- 0.3]-fold in untreated ovalbumin-immunized mice to 0.9 [+/- 0.4]-(thymol) and 0.8 [+/- 0.2]-fold (carvacrol) (p < 0.01). GATA binding protein 3 (GATA-3) expression declined from 3.4 [+/- 0.4]- to 0.5 [+/- 0.3]-fold (thymol) and 0.6 [+/- 0.4]-fold (carvacrol), whereas RORgammac decreased from 13.4 [+/- 1.6]- to 1.5 [+/- 0.6]-fold (thymol) and 0.8 [+/- 0.4]-fold (carvacrol) (p < 0.001). As carvacrol and thymol each suppressed the antigen-specific immune response by reducing TH cell-related cytokines\specific transcription factors, this indicated their potential to modulate destructive immune responses attributed to T-cells over-activation. FAU - Gholijani, Nasser AU - Gholijani N AD - a Autoimmune Disease Research Center, Shiraz University of Medical Sciences , Shiraz , Iran ; FAU - Amirghofran, Zahra AU - Amirghofran Z AD - b Department of Immunology and Medicinal and Natural Products Chemistry Research Center , Shiraz University of Medical Sciences , Shiraz , Iran. LA - eng PT - Journal Article DEP - 20160714 PL - England TA - J Immunotoxicol JT - Journal of immunotoxicology JID - 101201960 RN - 0 (Antigens) RN - 0 (Cymenes) RN - 0 (Cytokines) RN - 0 (GATA3 Transcription Factor) RN - 0 (Monoterpenes) RN - 0 (Nuclear Receptor Subfamily 1, Group F, Member 3) RN - 0 (T-Box Domain Proteins) RN - 0 (T-box transcription factor TBX21) RN - 3J50XA376E (Thymol) RN - 9006-59-1 (Ovalbumin) RN - 9B1J4V995Q (carvacrol) SB - IM MH - Animals MH - Antigens/immunology MH - Cell Proliferation MH - Cells, Cultured MH - Cymenes MH - Cytokines/metabolism MH - GATA3 Transcription Factor/genetics/metabolism MH - Hypersensitivity, Delayed/*drug therapy/immunology MH - Immunization MH - Male MH - Mice MH - Mice, Inbred BALB C MH - Monoterpenes/*therapeutic use MH - Nuclear Receptor Subfamily 1, Group F, Member 3/genetics/metabolism MH - Ovalbumin/immunology MH - T-Box Domain Proteins/genetics/metabolism MH - T-Lymphocyte Subsets/*drug effects/immunology MH - T-Lymphocytes, Helper-Inducer/*drug effects/immunology MH - Thymol/*therapeutic use MH - Thymus Plant/*immunology MH - Transcriptional Activation OTO - NOTNLM OT - Carvacrol OT - T-helper cells OT - immunization OT - immunomodulation OT - ovalbumin OT - thymol EDAT- 2016/07/15 06:00 MHDA- 2017/09/29 06:00 CRDT- 2016/07/15 06:00 PHST- 2016/07/15 06:00 [entrez] PHST- 2016/07/15 06:00 [pubmed] PHST- 2017/09/29 06:00 [medline] AID - 10.3109/1547691X.2016.1173134 [doi] PST - ppublish SO - J Immunotoxicol. 2016 Sep;13(5):729-37. doi: 10.3109/1547691X.2016.1173134. Epub 2016 Jul 14.