1
|
Conjugated linoleic acid attenuates 2,4-dinitrofluorobenzene-induced atopic dermatitis in mice through dual inhibition of COX-2/5-LOX and TLR4/NF-κB signaling. J Nutr Biochem 2020; 81:108379. [PMID: 32330842 DOI: 10.1016/j.jnutbio.2020.108379] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 02/10/2020] [Accepted: 03/13/2020] [Indexed: 01/18/2023]
Abstract
Conjugated linoleic acid (CLA), commonly found in beef, lamb and dairy products, has been reported to exhibit anti-inflammatory and antipruritus effects and to inhibit the release of chemical mediators such as histamine and eicosanoid in laboratory rodents. The chief objective of the study is to assess the efficacy of CLA on atopic dermatitis (AD) in mice and to explore possible mechanisms with CLA treatments. To develop a new therapy for AD, the anti-AD potential of CLA was investigated by inducing AD-like skin lesions in mice using 2,4-dinitrofluorobenzene. We evaluated dermatitis severity; histopathological changes; serum levels of T helper (Th) cytokines (interferon-γ, interleukin-4); changes in protein expression by western blotting and immunohistochemistry staining for cyclooxygenase-2 (COX-2), 5-lipoxygenase (5-LOX), toll like receptor 4 (TLR-4), myeloid differentiation factor 88 (MyD88), nuclear factor-κB (NF-κB) and tumor necrosis factor α (TNF-α); and production of the proinflammatory lipid mediators, such as prostaglandin E2 and leukotriene B4, in the skin lesions. Treatment with CLA ameliorated the development of AD-like clinical symptoms and effectively inhibited epidermal hyperplasia and infiltration of mast cells and CD4+ T cells in the AD mouse skin. Total serum immunoglobulin E levels and the expression levels of Th1/Th2 cytokines and lipid mediators in dorsal skin were dramatically suppressed by CLA. Furthermore, CLA down-regulated the expressions of COX-2, 5-LOX, TLR4, MyD88, NF-κB and TNF-α. Taken together, our findings demonstrate the potential usefulness of CLA as an anti-inflammatory dietary supplement or drug for the prevention and management of AD skin diseases by modulating the COX-2/5-LOX and TLR4/MyD88/NF-κB signaling pathways.
Collapse
|
2
|
Kim JA, Kim SH, Kim IS, Yu DY, Kim SC, Lee SH, Lee SS, Yun CH, Choi IS, Cho KK. Anti-Inflammatory Effects of a Mixture of Lactic Acid Bacteria and Sodium Butyrate in Atopic Dermatitis Murine Model. J Med Food 2018; 21:716-725. [PMID: 29648971 DOI: 10.1089/jmf.2017.4116] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Atopic dermatitis is a chronic and recurrent inflammatory skin disease. Recently, probiotics have been shown to suppress allergic symptoms through immunomodulatory responses. In the present study, combinatorial effects on allergic symptoms were identified in BALB/c mice fed with a mixture of four species of probiotics, Bifidobacterium lactis, Lactobacillus casei, Lactobacillus rhamnosus, and Lactobacillus plantarum, and sodium butyrate. Following sensitization with whey protein, the mice were challenged and divided into two groups: (1) mice administered with phosphate-buffered saline as a control and (2) mice administered with the probiotic mixture and sodium butyrate. Allergic symptoms were assessed by measuring ear thicknesses, serum histamine and IL-10 concentrations, and the quantities of leaked Evans blue. T cell differentiation was determined by analyzing the T cells groups in the mesenteric lymph nodes (MLNs) and spleen. To examine changes in the total gut microbiota, total fecal microflora was isolated, species identification was performed by DNA sequencing using Illumina MiSeq, and changes in intestinal beneficial bacteria were analyzed using quantitative polymerase chain reaction. Treatment with the probiotic mixture and sodium butyrate reduced ear thicknesses, the quantity of leaked Evans blue, and serum histamine values, while increasing serum IL-10 values. In the mouse model, the probiotic mixture and sodium butyrate increased Th1 and Treg cell differentiation in MLN and spleen tissues; the ratio of Firmicutes/Bacteroidetes, which is associated with reduction in allergic reactions; and microorganisms that lead to cell differentiation into Treg. These results suggest that the probiotic mixture and sodium butyrate can prevent and alleviate allergic symptoms.
Collapse
Affiliation(s)
- Jeong A Kim
- 1 Department of Animal Resources Technology, Gyeongnam National University of Science and Technology , Jinju, Korea
| | - Sung-Hak Kim
- 2 Department of Animal Science, Chonnam National University , Gwangju, Korea
| | - In Sung Kim
- 1 Department of Animal Resources Technology, Gyeongnam National University of Science and Technology , Jinju, Korea
| | - Da Yoon Yu
- 1 Department of Animal Resources Technology, Gyeongnam National University of Science and Technology , Jinju, Korea
| | - Sung Chan Kim
- 3 Department of Biochemistry, Institute of Cell Differentiation and Aging, College of Medicine, Hallym University , Chuncheon, Korea
| | - Seung Ho Lee
- 4 Department of Nano-Bioengineering, Incheon National University , Incheon, Korea
| | - Sang Suk Lee
- 5 Department of Animal Science and Technology, Sunchon National University , Sunchon, Korea
| | - Cheol-Heui Yun
- 6 Department of Agricultural Biotechnology, Seoul National University , Seoul, Korea
| | - In Soon Choi
- 7 Department of Life Science, Silla University , Busan, Korea
| | - Kwang Keun Cho
- 1 Department of Animal Resources Technology, Gyeongnam National University of Science and Technology , Jinju, Korea
| |
Collapse
|
3
|
Kim IS, Lee SH, Kim JA, Yu DY, Hong YH, Kim JY, Lim JM, Lee SS, Yun CH, Choi IS, Cho KK. Effect of oral administration of β-glucans derived from Aureobasidium pullulans SM-2001 in model mice and rat with atopic dermatitis-like phenotypes. Food Sci Biotechnol 2018; 27:1185-1192. [PMID: 30263849 DOI: 10.1007/s10068-018-0322-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 01/15/2018] [Accepted: 01/18/2018] [Indexed: 12/20/2022] Open
Abstract
In this study, we investigated the anti-atopic dermatitis (AD) activity of β-glucans derived from Aureobasidium pullulans SM-2001 (βGdAP). βGdAP was orally administered to AD animal models such as vasodilation, allergic pruritus and contact dermatitis. Administration of βGdAP attenuated the amount of Evans blue solution on vasodilation rat. Scratching behaviors, secretion of histamine and ear thickness were significantly (p < 0.05) attenuated in the βGdAP-treated mouse groups. Interestingly, transcriptional expression of T-bet, a transcription factor for Th1 reactions, was increased, but that of GATA-3, a transcription factor for Th2 reactions, was attenuated in the βGdAP-treated groups (p < 0.05). In addition, we found that reduced transcriptional expression of forkhead box P3 and galectin-9, regulators of regulatory T cells, was recovered in the βGdAP-treated groups (p < 0.05). Taken together, these data indicate that administration of βGdAP could effectively attenuate AD-like phenotypes via regulation of Th1/Th2 transcriptional activity and Treg activation.
Collapse
Affiliation(s)
- In Sung Kim
- 1Department of Animal Resources Technology, Gyeongnam National University of Science and Technology, Jinju, 52725 Korea
| | - Seung Ho Lee
- 2Department of Nano-Bioengineering, Incheon National University, Incheon, 22012 Korea
| | - Jeong A Kim
- 1Department of Animal Resources Technology, Gyeongnam National University of Science and Technology, Jinju, 52725 Korea
| | - Da Yoon Yu
- 1Department of Animal Resources Technology, Gyeongnam National University of Science and Technology, Jinju, 52725 Korea
| | - Yeon Hee Hong
- 1Department of Animal Resources Technology, Gyeongnam National University of Science and Technology, Jinju, 52725 Korea
| | - Jae Young Kim
- 3Swine Science and Technology Center, Gyeongnam National University of Science and Technology, Jinju, 52725 Korea
| | | | - Sang Suk Lee
- 5Department of Animal Science and Technology, Sunchon National University, Suncheon, 57922 Korea
| | - Cheol-Heui Yun
- 6Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826 Korea
| | - In Soon Choi
- 7Departmnet of Life Science, Silla University, Busan, 46958 Korea
| | - Kwang Keun Cho
- 1Department of Animal Resources Technology, Gyeongnam National University of Science and Technology, Jinju, 52725 Korea
| |
Collapse
|
4
|
The use of lysozyme modified with fluorescein for the detection of Gram-positive bacteria. Microbiol Res 2015; 170:242-7. [DOI: 10.1016/j.micres.2014.05.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 05/08/2014] [Accepted: 05/13/2014] [Indexed: 11/15/2022]
|
5
|
Kim JW, Kang BT, Kang JH, Yang MP. Effect of conjugated linoleic acid on compound 48/80-induced pruritus in mice. J Biomed Res 2014. [DOI: 10.12729/jbr.2014.15.3.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
6
|
Huebner SM, Olson JM, Campbell JP, Bishop JW, Crump PM, Cook ME. Dietary trans-10,cis-12 CLA reduces murine collagen-induced arthritis in a dose-dependent manner. J Nutr 2014; 144:177-84. [PMID: 24285692 DOI: 10.3945/jn.113.182550] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Dietary trans-10,cis-12 (t10c12) conjugated linoleic acid (CLA) has been shown to reduce inflammation in a murine collagen-induced arthritis (CA) model. To understand the anti-inflammatory potential of t10c12-CLA in the diet, the minimum dose of pure dietary t10c12-CLA capable of reducing CA was investigated. Because plasma inflammatory cytokines often do not reflect the progression of late-stage arthritis, inflamed tissue cytokine concentrations were also investigated in relation to increasing dietary t10c12-CLA amounts. Mice were randomly assigned to the following dietary treatments upon the establishment of arthritis: corn oil (CO) or 0.125%, 0.25%, 0.375%, or 0.5% t10c12-CLA (wt:wt) for 84 d. Sham mice (no arthritis) were fed CO and served as controls. Arthritic paw score, based on subjective assessment of arthritic severity, and paw thickness decreased linearly overall [16-65% (P < 0.001) and 0.5-12% (P < 0.001), respectively] as dietary t10c12-CLA increased (P < 0.001, R(2) < 0.81). Increasing dietary t10c12-CLA was associated with a decrease in plasma interleukin (IL)-1β at days 21 and 42 compared with CO-fed arthritic mice, such that mice fed ≥0.25% t10c12-CLA had IL-1β concentrations that were similar to sham mice. Plasma cytokines returned to sham mice concentrations by day 63 regardless of treatment; however, an arthritis-induced elevation in paw IL-1β decreased linearly as dietary t10c12-CLA concentrations increased at day 84 (P = 0.007, R(2) = 0.92). Similarly, increasing dietary t10c12-CLA linearly decreased paw tumor necrosis factor (TNF)-α (P = 0.05, R(2) = 0.70). In conclusion, ≥0.125% t10c12-CLA dose-dependently reduced inflammation in a murine CA model.
Collapse
|
7
|
Bassaganya-Riera J, Hontecillas R, Horne WT, Sandridge M, Herfarth HH, Bloomfeld R, Isaacs KL. Conjugated linoleic acid modulates immune responses in patients with mild to moderately active Crohn's disease. Clin Nutr 2012; 31:721-7. [PMID: 22521469 DOI: 10.1016/j.clnu.2012.03.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 03/01/2012] [Accepted: 03/08/2012] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS Conjugated linoleic acid (CLA) has demonstrated efficacy as an immune modulator and anti-inflammatory compound in mouse and pig models of colitis. We investigated the immunoregulatory efficacy of CLA in patients with mild to moderate Crohn's disease (CD). METHODS Thirteen patients with mild to moderately active CD were enrolled in an open-label study of CLA (6 g/d orally) for 12 weeks. Peripheral blood was collected at baseline, 6 and 12 weeks after treatment initiation for isolation of peripheral blood mononuclear cells for functional analyses of lymphoproliferation and cytokine production. Disease activity was calculated using the CD activity index (CDAI) and quality of life was assessed using the Inflammatory Bowel Disease Questionnaire (IBDQ). RESULTS CLA significantly suppressed the ability of peripheral blood CD4+ and CD8+ T cell subsets to produce IFN-γ, TNF-α and IL-17 and lymphoproliferation at week 12. There was a statistically significant drop in CDAI from 245 to 187 (P = 0.013) and increase in IBDQ from 141 to 165 (P = 0.017) on week 12. CONCLUSION Oral CLA administration was well tolerated and suppressed the ability of peripheral blood T cells to produce pro-inflammatory cytokines, decreased disease activity and increased the quality of life of patients with CD.
Collapse
Affiliation(s)
- Josep Bassaganya-Riera
- Nutritional Immunology and Molecular Medicine Laboratory and Center for Modeling Immunity to Enteric Pathogens, Virginia Bioinformatics Institute, Virginia Tech, Blacksburg, VA 24060, USA.
| | | | | | | | | | | | | |
Collapse
|
8
|
Ethosomes® and transfersomes® containing linoleic acid: physicochemical and technological features of topical drug delivery carriers for the potential treatment of melasma disorders. Biomed Microdevices 2011; 14:119-30. [DOI: 10.1007/s10544-011-9590-y] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
9
|
Chandrashekhar VM, Halagali KS, Nidavani RB, Shalavadi MH, Biradar BS, Biswas D, Muchchandi IS. Anti-allergic activity of German chamomile (Matricaria recutita L.) in mast cell mediated allergy model. JOURNAL OF ETHNOPHARMACOLOGY 2011; 137:336-340. [PMID: 21651969 DOI: 10.1016/j.jep.2011.05.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Revised: 05/15/2011] [Accepted: 05/25/2011] [Indexed: 05/30/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Chamomile is most popular used medicinal plant and extensively consumed as a tea or tisanes. Traditionally this plant was used for treatment of many ailments such as allergy disorders and inflammatory mediated diseases. AIM OF THE STUDY We investigated the effects of anti-allergic activity of Matricaria recutita L. on mast cell mediated allergic models. MATERIALS AND METHODS The protective effect of methanol extract of Matricaria recutita against compound 48/80 induced anaphylaxis and pruritis models for acute phase of hypersensitivity reactions were carried out. The late phase hypersensitivity reactions by compound 48/80 induced mast cell degranulation and histamine release from blood along with serum nitric oxide (NO), rat peritoneal fluid nitric oxide (NO) and bronchoalveolar fluid nitric oxide (NO) levels were measured. RESULTS The methanol extract of Matricaria recutita L. showed inhibitory effects on anaphylaxis induced by compound 48/80 and significant dose dependent anti-pruritis property was observed by inhibiting the mast cell degranulation. Mast cell membrane stabilization activity was also observed in compound 48/80 induced mast cell activation. Dose dependent reduction in the histamine release, along with decreased release of serum, rat peritoneal and BAL fluid nitric oxide (NO) levels were observed. CONCLUSION These results suggest that the methanol extract of Matricaria recutita showed potent anti-allergic activity by inhibition of histamine release from mast cells.
Collapse
Affiliation(s)
- V M Chandrashekhar
- Department of Pharmacology, Hanagal Shri Kumareshwar College of Pharmacy, Bagalkot 587101, Karnataka, India.
| | | | | | | | | | | | | |
Collapse
|
10
|
Huebner SM, Campbell JP, Butz DE, Fulmer TG, Gendron-Fitzpatrick A, Cook ME. Individual isomers of conjugated linoleic acid reduce inflammation associated with established collagen-induced arthritis in DBA/1 mice. J Nutr 2010; 140:1454-61. [PMID: 20573944 DOI: 10.3945/jn.109.120527] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Previously, dietary conjugated linoleic acid [(CLA), an equal mixture of cis-9, trans-11 (c9t11) and trans-10, cis-12 (t10c12) CLA isomers], was found to reduce inflammation in the murine collagen antibody-induced arthritis model, but less so in the murine collagen-induced arthritis (CIA) model, an arthritic model dependent upon acquired immunity. Because CLA is known to alter the acquired immune response, it was hypothesized that feeding CLA after the establishment of arthritis would reduce paw swelling in the CIA model. In this study, upon the establishment of arthritic symptoms, mice were randomized to the following dietary treatments: corn oil (CO) control (n = 6), 0.5% c9t11-CLA (n = 8), 0.5% t10c12-CLA (n = 6), or 1% combined CLA (1:1 c9t11:t10c12-CLA, n = 6). Paws were scored for severity of arthritis and measured for changes in thickness during an 84-d study period. Dietary c9t11- and combined-CLA similarly decreased the arthritic score (29%, P = 0.036, P = 0.049, respectively, when normalized to initial score) and paw thickness (0.11 mm, P = 0.027, P = 0.035, respectively) compared with CO. Dietary t10c12-CLA reduced the arthritic score (41%, P = 0.007 when normalized) and paw thickness (0.12 mm, P = 0.013) relative to CO. Reduced interleukin-1beta on d 7 and 21 for all CLA treatments (n = 3) relative to CO suggested that antiinflammatory effects of CLA isomers might work by common mechanisms of known pathways involved in chronic inflammation. In conclusion, dietary CLA reduced inflammation associated with CIA, and both c9t11-CLA and t10c12-CLA exhibited antiinflammatory effects.
Collapse
Affiliation(s)
- Shane M Huebner
- Department of Nutritional Sciences, 4Department of Animal Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA
| | | | | | | | | | | |
Collapse
|
11
|
Lee HS, Lee BC, Ku SK. Effect of DHU001, a Polyherbal Formula, on Dinitrofluorobenzene-induced Contact Dermatitis (Type I allergy). Toxicol Res 2010; 26:123-30. [PMID: 24278515 PMCID: PMC3834469 DOI: 10.5487/tr.2010.26.2.123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2010] [Revised: 05/07/2010] [Accepted: 05/10/2010] [Indexed: 11/20/2022] Open
Abstract
The effect of DHU001, a mixed herbal formula consisted of 7 types aqueous extracts for various respiratory disorders were evaluated on 2,4-dinitrofluorobenzene (DNFB) -induced contact dermatitis, type I allergic model. Contact dermatitis was induced by sensitization with dinitrophenyl-derivatized ovalbumin (DNP-OVA) and DNFB challenge as antigen. Two different dosages of DHU001 (300 and 150 mg/kg) were orally administered to DNP-OVA sensitization mice once a day for 7 days with reference material, dexamethasone (15 mg/kg, intraperitoneal treatment) . End of 7 days oral administration of DHU001 extracts or intraperitoneal treatment of dexamethasone, the changes on the edematous changes and scratching behavior were measured. Immediate after DNFB challenge on ear or paw of DNP-OVA sensitized mice, increases of ear and paw thicknesses and weights were detected with anterior ear skin (dermis to epidermis) thickness and paw scratching behavior increases. However, these contact dermatitis signs induced by DNFB treatment were reduced by treatment of the both different dosages of DHU001 and dexamethasone, respectively. The results obtained in this study suggest that oral treatment of DHU001 extracts also has relatively favorable effects on contact dermatitis.
Collapse
Affiliation(s)
- Hyeung-Sik Lee
- Department of Clinical Laboratory Science, College of Health and Therapy, Daegu Haany University, Gyeongsan 712-715, Korea
| | - Byung-Chang Lee
- Development Anatomy and Histology, College of Oriental Medicine, Daegu Haany University, Gyeongsan 712-715, Korea
| | - Sae-Kwang Ku
- Development Anatomy and Histology, College of Oriental Medicine, Daegu Haany University, Gyeongsan 712-715, Korea
| |
Collapse
|
12
|
ARYAEIAN N, SHAHRAM F, DJALALI M, ESHRAGIAN MR, DJAZAYERI A, SARRAFNEJAD A, SALIMZADEH A, NADERI N, MARYAM C. Effect of conjugated linoleic acids, vitamin E and their combination on the clinical outcome of Iranian adults with active rheumatoid arthritis. Int J Rheum Dis 2009; 12:20-8. [DOI: 10.1111/j.1756-185x.2009.01374.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
13
|
Peterson KM, O'Shea M, Stam W, Mohede ICM, Patrie JT, Hayden FG. Effects of dietary supplementation with conjugated linoleic acid on experimental human rhinovirus infection and illness. Antivir Ther 2009. [DOI: 10.1177/135965350901400111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Because studies suggest that the dietary supplement conjugated linoleic acid (CLA) has immunomodulatory activities that might benefit common colds, we performed two studies of CLA effects in experimental human rhinovirus (HRV) infection. Methods The first study explored whether CLA supplementation (Safforin™; Loders Croklaan, BV, Wormerveer, the Netherlands) altered the virological or clinical course of experimental HRV infection, and the second explored whether CLA affected the frequency and severity of HRV cold-associated sore throat and cough. The trials were randomized, double-blinded and placebo-controlled. In total, 50 healthy volunteers aged 18–45 years and susceptible to HRV type-39 (serum neutralizing antibody titre ≤1:2) participated in study 1 and 80 similar volunteers susceptible to Hank's HRV participated in study 2. Participants ingested CLA 2 g/day or placebo for 4 weeks before and 4 days following intranasal HRV inoculation. The primary endpoint for study 1 was the frequency of colds and for study 2 was the symptom severity scores for sore throat and cough. Results In study 1, 10/24 (42%) placebo compared with 7/21 (33%) CLA participants developed colds ( P=0.53). CLA was associated with significant reductions in mean scores for cough (0 CLA versus 0.9 placebo) and sore throat (0.8 CLA versus 2.9 placebo). In study 2, clinical colds developed in 19/33 (58%) placebo and 27/43 (63%) CLA participants. Symptom scores for cough (0.9 CLA versus 1.0 placebo) and sore throat (2.6 CLA versus 3.2 placebo) were not significantly different. Similarly no differences in nasal viral titres or serological responses were found. Conclusions CLA dietary supplementation had no consistent effects on the virological or clinical course of experimental HRV colds. A larger study would be required to detect more subtle effects of CLA on HRV cold-associated symptoms.
Collapse
Affiliation(s)
- Kristine M Peterson
- Department of Internal Medicine, University of Virginia, Charlottesville, VA, USA
| | | | - Wiro Stam
- Loders Croklaan, BV, Wormerveer, the Netherlands
| | | | - James T Patrie
- Department of Health Evaluation Sciences, University of Virginia, Charlottesville, VA, USA
| | - Frederick G Hayden
- Department of Internal Medicine, University of Virginia, Charlottesville, VA, USA
| |
Collapse
|
14
|
Park JH, Lee SN, Ku SK. Effect of Picrorrhiza Rhizoma on Dinitrofluorobenzene-induced Contact Dermatitis (Type I allergy). Biomol Ther (Seoul) 2008. [DOI: 10.4062/biomolther.2008.16.3.237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
|
15
|
Abstract
It has recently been reported that the increased prevalence in childhood allergy may be linked to deviations in fetal immune development. One reason may be impaired nutrient supply. Hence, a well-differentiated placenta together with an optimal fetal nutrition via the mother are important prerequisites for the establishment of a functional immune system with normal immune responses. Fatty acids and their derivatives can influence both the early immune development and immune maturation by regulating numerous metabolic processes and the gene expression of important proteins such as enzymes and cytokines. The present review summarises the impact of nutritional fatty acids on the development of the immune system as well as the fetal development. It describes the mechanisms of action of PUFA, trans fatty acids and conjugated linoleic acids in programming the fetus with regard to its risk of acquiring atopic diseases in childhood.
Collapse
|
16
|
Immunological and metabolic effects of cis-9, trans-11-conjugated linoleic acid in subjects with birch pollen allergy. Br J Nutr 2008; 100:112-9. [PMID: 18167173 DOI: 10.1017/s0007114507886326] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Animal studies suggest that conjugated linoleic acid (CLA) may modulate the immune response, while studies in healthy human subjects have shown little effect and results are controversial. However, the effects of CLA may be more prominent in situations of immune imbalance, such as allergy. We studied the effects of the natural CLA isomer, cis-9, trans-11-CLA, on allergy symptoms and immunological parameters in subjects with birch pollen allergy. In a randomised, placebo-controlled study, forty subjects (20-46 years) with diagnosed birch pollen allergy received 2 g CLA/d in capsules, which contained 65.3 % cis-9, trans-11-CLA and 8.5 % trans-10, cis-12-CLA (n 20), or placebo (high-oleic acid sunflower-seed oil) (n 20) for 12 weeks. The supplementation began 8 weeks before the birch pollen season and continued throughout the season. Allergy symptoms and use of medication were recorded daily. Lymphocyte subsets, cytokine production, immunoglobulins, C-reactive protein, lipid and glucose metabolism and lipid peroxidation were assessed before and after supplementation. The CLA group reported a better overall feeling of wellbeing (P < 0.05) and less sneezing (P < 0.05) during the pollen season. CLA supplementation decreased the in vitro production of TNF-alpha (P < 0.01), interferon-gamma (P < 0.05) and IL-5 (P < 0.05). Total plasma IgE and birch-specific IgE concentrations did not differ between groups, whereas plasma IgA (P < 0.05), granulocyte macrophage colony-stimulating factor (P < 0.05) and eosinophil-derived neurotoxin (P < 0.05) concentrations were lower after CLA supplementation. Urinary excretion of 8-iso-PGF2alpha, a major F2-isoprostane (P < 0.01), and 15-keto-dihydro-PGF2alpha, a primary PGF2alpha metabolite (P < 0.05), increased in the CLA group. The results suggest that cis-9, trans-11-CLA has modest anti-inflammatory effects in allergic subjects.
Collapse
|
17
|
Kuraishi Y, Ohtsuka E, Nakano T, Kawai S, Andoh T, Nojima H, Kamimura K. Possible involvement of 5-lipoxygenase metabolite in itch-associated response of mosquito allergy in mice. J Pharmacol Sci 2007; 105:41-7. [PMID: 17827870 DOI: 10.1254/jphs.fp0070404] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
This study investigated endogenous mediators involved in mosquito allergy-associated itching in mice. An intradermal injection of an extract of mosquito salivary gland elicited marked scratching in sensitized mice. The 5-lipoxygenase inhibitor zileuton (100 mg/kg), the 5-lipoxygenase activating peptide inhibitor MK-886 (10 mg/kg), and the glucocorticoid betamethasone 17-valerate (3 mg/kg) inhibited the scratching. The scratching was not affected by the cyclooxygenase inhibitors indomethacin and ketoprofen, the TP prostanoid receptor antagonist SQ-29548, the leukotriene B(4) antagonist ONO-4057, the cysteinyl leukotriene antagonist pranlucast, the leukotriene D(4) antagonist MK-571, the platelet-activating factor antagonist CV-3988, the nitric oxide synthase inhibitor N(G)-nitro-L-arginine methyl ester, the H(2) histamine-receptor antagonist cimetidine, the H(1) histamine-receptor antagonist terfenadine plus cimetidine, and cypoheptadine that blocks the 5-HT(1/2) serotonin receptors. Zileuton (100 mg/kg) inhibited the increased activity of the cutaneous nerve branch induced by an intradermal injection of the extract, suggesting the peripheral action. Zileuton and MK-886 (10 and 100 microM) did not affect high K(+)-induced increase in intracellular Ca(2+) concentration in cultured dorsal root ganglion neurons. The results suggest that 5-lipoxygenase metabolite(s) other than leukotriene B(4) and cysteinyl leukotrienes are involved in mosquito allergy-associated itching.
Collapse
Affiliation(s)
- Yasushi Kuraishi
- Department of Applied Pharmacology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Japan.
| | | | | | | | | | | | | |
Collapse
|
18
|
Butz DE, Li G, Huebner SM, Cook ME. A mechanistic approach to understanding conjugated linoleic acid's role in inflammation using murine models of rheumatoid arthritis. Am J Physiol Regul Integr Comp Physiol 2007; 293:R669-76. [PMID: 17553852 DOI: 10.1152/ajpregu.00005.2007] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A naturally occurring fatty acid, conjugated linoleic acid (CLA), reduces immune-induced TNF and inducible cyclooxygenase (COX-2) expression; key mediators of inflammation in rheumatoid arthritis (RA). On the basis of previous work, it was hypothesized that dietary CLA would act as an anti-inflammatory agent in select animal models of RA. In the collagen antibody-induced arthritis (CAIA) model, mice fed CLA (mixed isomers of c9, t11, and t10, c12-CLA) for 3 wk before anticollagen antibody injection had reduced lipopolysaccharide-induced plasma TNF levels and had arthritic scores that were 60% of mice fed corn oil (CO). In the collagen-induced arthritis (CIA) model, mice fed mixed isomers of CLA for 21 days before immunization had lower IgG(1) titers, earlier signs of joint inflammation, but similar arthritis scores compared with CO fed mice during the remaining 70-day post-injection period. Beginning on day 80 to 133, CLA-fed mice had arthritic scores 70% that of the CO-fed mice. In a second CIA experiment, CLA was fed only after the booster injection. Plasma IgG(1) levels were not reduced and arthritis onset was delayed 4 days in CLA-fed mice compared with the CO-fed mice. Peak arthritis score was similar between CLA and CO-fed mice from day 35 to 56. Because CLA reduced inflammation in the CAIA model, delayed onset of arthritis in the CIA model (CIA experiment 2) and reduced arthritis score after day 80 in the CIA model (CIA experiment 1), we concluded that dietary CLA exhibited anti-inflammatory activity that was dependent on antibody.
Collapse
MESH Headings
- Animal Feed
- Animals
- Arthritis, Experimental/diet therapy
- Arthritis, Experimental/immunology
- Arthritis, Experimental/pathology
- Arthritis, Rheumatoid/diet therapy
- Arthritis, Rheumatoid/immunology
- Arthritis, Rheumatoid/pathology
- Autoantibodies/blood
- Cyclooxygenase 2/metabolism
- Dietary Fats/immunology
- Dietary Fats/pharmacology
- Disease Models, Animal
- Immunoglobulin G/blood
- Linoleic Acids, Conjugated/immunology
- Linoleic Acids, Conjugated/pharmacology
- Lipopolysaccharides/immunology
- Male
- Mice
- Mice, Inbred BALB C
- Mice, Inbred DBA
- Tumor Necrosis Factor-alpha/metabolism
Collapse
Affiliation(s)
- Daniel E Butz
- Nutritional Sciences, University of Wisconsin-Madison, 1675 Observatory Dr., Madison, WI 53706, USA
| | | | | | | |
Collapse
|
19
|
Oikawa D, Nakanishi T, Nakamura YN, Yamamoto T, Yamaguchi A, Shiba N, Iwamoto H, Tachibana T, Furuse M. Modification of skin composition by conjugated linoleic acid alone or with combination of other fatty acids in mice. Br J Nutr 2007; 94:275-81. [PMID: 16115363 DOI: 10.1079/bjn20051488] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The effects of conjugated linoleic acid (CLA), γ-linolenic acid (GLA), linoleic acid (LA), and their combinations, on skin composition in mice were investigated. Mice (8 weeks old) were orally administered with either LA, GLA, CLA, LA + GLA, LA + CLA, or CLA + GLA for 4 weeks. Then, the skin was analysed for triacylglycerol content, fatty acid composition and collagen content. Additionally, thicknesses of the dermis layer and subcutaneous tissue layer, and the size and number of adipocytes were measured histologically. The skin fatty acid composition was modified depending upon the fatty acid composition of supplemented oils. In each oil-alone group, skin triacylglycerol content was the highest in LA, followed by GLA and CLA treatments. Combinations with CLA had a similar triacylglycerol content compared with the CLA-alone group. No significant changes in collagen content were observed among any treatments. The effects on subcutaneous thickness were similar to the results obtained in the triacylglycerol contents, where groups supplemented with CLA alone or other fatty acids had significantly thinner subcutaneous tissue compared with the LA-alone group. However, no significant difference was detected in the thickness of the dermis layers. The number of adipocytes was highest in the LA + GLA group and tended to be reduced by CLA with or without the other fatty acids. These results suggest that CLA alone or in combination with other fatty acids strongly modifies skin composition in mice.
Collapse
Affiliation(s)
- Daichi Oikawa
- Laboratory of Advanced Animal and Marine Bioresources, Graduate School of Bioresources and Bioenvironmental Sciences, Kyushu University, Fukuoka 812-8581, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Noli C, Carta G, Cordeddu L, Melis MP, Murru E, Banni S. Conjugated linoleic acid and black currant seed oil in the treatment of canine atopic dermatitis: A preliminary report. Vet J 2007; 173:413-21. [PMID: 16495095 DOI: 10.1016/j.tvjl.2005.12.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2005] [Indexed: 10/25/2022]
Abstract
Although conjugated linoleic acid (CLA) shows inhibitory effects on histamine release, eicosanoid production and pruritus in laboratory rodents, its use in canine atopic dermatitis (AD) has not been reported. The aims of this study were to assess the efficacy of CLA, black currant seed oil (BSO) or a combination of both, compared to placebo, in dogs with AD and to evaluate any changes in fatty acid metabolism with these treatments. Twenty-four dogs with AD were randomly allocated to four groups, and were treated orally each day for two months with either 1 mL/10 kg CLA (80% purity), 1 mL/10 kg pure BSO, 1 mL/10 kg CLA+1 mL/10 kg BSO, or 1 mL/10 kg sugar syrup (placebo). Serum was obtained on days 0, 30 and 60 for analysis of CLA metabolites, linoleic acid (LA), gamma-linolenic acid (GLA), dihomo-gamma-linolenic acid (DGLA) and arachidonic acid (AA). At the same time point, the owners were asked to assess pruritus and the veterinarians evaluated any skin lesions present. Although the best clinical results occurred with BSO treatment alone, improvement of clinical signs and pruritus was not significant with any of the treatments. Serum levels of GLA and DGLA significantly increased in BSO-treated dogs, but not in the CLA+BSO group. CLA at the dosage used in this study was not efficacious in treating canine AD, whereas BSO may help some dogs with AD, although further studies are necessary before this can be recommended as a treatment.
Collapse
Affiliation(s)
- C Noli
- Ospedale Veterinario Cuneese, Via Cuneo 52/N, 12011 Borgo San Dalmazzo (CN), Italy.
| | | | | | | | | | | |
Collapse
|
21
|
Lenon GB, Xue CCL, Story DF, Thien FCK, McPhee S, Li CG. Inhibition of release of inflammatory mediators in primary and cultured cells by a Chinese herbal medicine formula for allergic rhinitis. Chin Med 2007; 2:2. [PMID: 17302969 PMCID: PMC1805751 DOI: 10.1186/1749-8546-2-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2006] [Accepted: 02/15/2007] [Indexed: 11/12/2022] Open
Abstract
Background We demonstrated that a Chinese herbal formula, which we refer to as RCM-101, developed from a traditional Chinese medicine formula, reduced nasal and non-nasal symptoms of seasonal allergic rhinitis (SAR). The present study in primary and cultured cells was undertaken to investigate the effects of RCM-101 on the production/release of inflammatory mediators known to be involved in SAR. Methods Compound 48/80-induced histamine release was studied in rat peritoneal mast cells. Production of leukotriene B4 induced by the calcium ionophore A23187 was studied in porcine neutrophils using an HPLC assay and lipopolysaccharide-stimulated prostaglandin E2 production was studied in murine macrophage (Raw 264.7) cells by immune-enzyme assay. Expression of cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2) was determined in Raw 264.7 cells, using western blotting techniques. Results RCM-101 (1–100 μg/mL) produced concentration-dependent inhibition of compound 48/80-induced histamine release from rat peritoneal mast cells and of lipopolysaccharide-stimulated prostaglandin E2 release from Raw 264.7 cells. Over the range 1 – 10 μg/mL, it inhibited A23187-induced leukotriene B4 production in porcine neutrophils. In addition, RCM-101 (100 μg/mL) inhibited the expression of COX-2 protein but did not affect that of COX-1. Conclusion The findings indicate that RCM-101 inhibits the release and/or synthesis of histamine, leukotriene B4 and prostaglandin E2 in cultured cells. These interactions of RCM-101 with multiple inflammatory mediators are likely to be related to its ability to reduce symptoms of allergic rhinitis.
Collapse
Affiliation(s)
- George B Lenon
- The RMIT Chinese Medicine Research Group, RMIT University, Plenty Road, Bundoora 3083, Australia
| | - Charlie CL Xue
- The RMIT Chinese Medicine Research Group, RMIT University, Plenty Road, Bundoora 3083, Australia
| | - David F Story
- The RMIT Chinese Medicine Research Group, RMIT University, Plenty Road, Bundoora 3083, Australia
| | - Frank CK Thien
- Alfred Hospital & Monash University, Commercial Road, Melbourne 3004, Australia
| | - Sarah McPhee
- The Natural Products Research Group, School of Medical Sciences, RMIT University, Plenty Road, Bundoora 3083, Australia
| | - Chun G Li
- The RMIT Chinese Medicine Research Group, RMIT University, Plenty Road, Bundoora 3083, Australia
| |
Collapse
|
22
|
A double-blind, randomized controlled trial (RCT) of L-carnitine and conjugated linoleic acid-based health food with health claims. ACTA ACUST UNITED AC 2007. [DOI: 10.3793/jaam.4.19] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
23
|
Bertschi I, Collomb M, Rist L, Eberhard P, Sieber R, Bütikofer U, Wechsler D, Folkers G, von Mandach U. Maternal dietary alpine butter intake affects human milk: Fatty acids and conjugated linoleic acid isomers. Lipids 2005; 40:581-7. [PMID: 16149737 DOI: 10.1007/s11745-005-1419-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Consumption of CLA by lactating women affects the composition of their milk, but the pattern of the different CLA isomers is still unknown. We determined the effects of short maternal supplementation with CLA-rich Alpine butter on the occurrence of FA and CLA isomers in human milk. In an open randomized controlled study with a two-period cross-over design, milk FA and CLA isomer concentrations were measured on postpartum days > or = 20 in two parallel groups of lactating women before, during, and after consumption of defined quantities of Alpine butter or margarine with comparable fat content (10 d of butter followed by 10 d of margarine for one group, and vice versa in the other). In the 16 women who completed the study (8/group), Alpine butter supplementation increased the C16 and C18 FA, the sum of saturated FA, the 18:1 trans FA, and the trans FA with CLA. The CLA isomer 18:2 c9,t11 increased by 49.7%. Significant increases were also found for the isomers t9,t11, t7,c9, t11,c13, and t8,c10 18:2. The remaining nine of the total 14 detectable isomers showed no changes, and concentrations were <5 mg/100 g fat. A breastfeeding mother can therefore modulate the FA/CLA supply of her child by consuming Alpine butter. Further studies will show whether human milk containing this FA and CLA isomer pattern acts as a functional food for newborns.
Collapse
Affiliation(s)
- Isabelle Bertschi
- Department of Obstetrics, Zurich University Hospital, CH-8091 Zurich, Switzerland
| | | | | | | | | | | | | | | | | |
Collapse
|
24
|
O'Shea M, Bassaganya-Riera J, Mohede ICM. Immunomodulatory properties of conjugated linoleic acid. Am J Clin Nutr 2004; 79:1199S-1206S. [PMID: 15159257 DOI: 10.1093/ajcn/79.6.1199s] [Citation(s) in RCA: 158] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In vitro studies of the use of immune cells and animal models demonstrate that conjugated linoleic acid (CLA), a lipid, modulates immune function. In addition, recent publications demonstrate that 2 active CLA isomers (ie, cis-9,trans-11 CLA and trans-10,cis-12 CLA) modulate immune function in humans. Aspects of both the innate and adaptive immune responses are affected by dietary CLA supplementation. CLA consists of a mixture of isomers, which reduced immune-induced wasting and enhanced ex vivo lymphocyte proliferation in broilers and decreased tumor necrosis factor alpha (TNF-alpha) and interleukin 6 (IL-6) production in rat models. In mice, ex vivo lymphocyte proliferation and IL-2 production were increased. Furthermore, evidence suggests that the cis-9,trans-11 and trans-10,cis-12 CLA isomers exert distinct effects on immune function. Specifically, these 2 isomers have differential effects on specific T cell populations and immunoglobulin subclasses in animal and human studies. Herein, a systematic review of the literature and relevant new data are presented with an aim to compare data and to present an overview covering the innate and adaptive components of the immune response that are regulated by CLA. In addition, potential mechanisms of action are discussed and the need for future studies on the immunomodulatory properties of CLA are outlined in detail. The understanding of the mechanism(s) by which CLA increases immune function will aid in the development of nutritionally based therapeutic applications to augment host resistance against infectious diseases and to treat immune imbalances, which result in inflammatory disorders, allergic reactions, or both.
Collapse
Affiliation(s)
- Marianne O'Shea
- Loders Croklaan, Lipid Nutrition, Channahon, IL 60410, USA. marianne.o'
| | | | | |
Collapse
|