• Journal of Physiology & Pathology in Korean Medicine
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• v.21 no.4
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• pp.849-855
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• 2007

Atopic dermatitis is an allergic inflammatory skin disease caused by aberrant and overreactive immune responses including overactivation of $T_H2$ immune responses, high levels of IgE as well as proinflammatory cytokines and chemokines. We examined whether BHOSB, a traditional herbal medicine, has modulatory effects on various immunological factors related to pathogenesis of atopic dermatitis in ONCB treated NC/Nga mice. Oral administration of BHOSB at the concentration of 10.8 mg/mouse/day significantly inhibited the production of IgE compared with control, and the levels of IgG2a and IgG2b, but not IgG1, were also significantly reduced. Production of IL-6 and TNF-a was greatly decreased. The results from flowcytometry of peripheral blood mononuclear cells indicated that the percentages of C03+C069+ cells and C04+ were significantly decreased by BHOSB. Theses results suggested that BHOSB has suppressive effects on aberrant and overreactive immunological activities in ONCB-induced dermatitis mice of NC/Nga.

• Korean Journal of Pharmacognosy
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• v.44 no.2
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• pp.118-124
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• 2013

Mast cells is the key effector cells for IgE-mediated allergic responses. In this study, we investigated whether Rhus trichocarpa extract (RT) inhibited IgE-mediated allergic responses in mast cells and an allergic animal model. We further tried to find its mechanism of action in mast cells. We found that RT suppressed antigen-stimulated degranulation and production of TNF-${\alpha}$ and IL-4 in rat basophilic leukemia (RBL)-2H3 mast cells and bone marrow-derived mast cells (BMMC), as well as IgE-mediated passive cutaneous anaphylaxis (PCA) in mice. As the mechanism of action of RT, it inhibited the activation of spleen tyrosine kinase (Syk), a pivotal signaling molecule for activation of mast cells and that of LAT, a downstream adaptor molecule of Syk in $Fc{\varepsilon}RI$-mediated signal pathways. RT also suppressed the activation of mitogen-activated protein (MAP) kinases and Akt. The current results demonstrated for the first time that RT has the anti-allergic effect through inhibiting degranulation and secretion of cytokines by suppression of Syk in antigen-stimulated mast cells. Therefore, RT might be useful for allergic diseases.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.17 no.1
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• pp.45-54
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• 2004

Major symptoms of allergic rhinitis are nasal obstructions, sneezing and watery rhinorrhea. Gamigyeji-tang has been used to treat for watery rhinorrhea, which is one of the symptoms of allergic rhinitis. This experimental study was done to rescarch effects of Gamigyeji-tang. We have studied effect of mice on OVA-induced Production of IL-4, IL-5, IFN-${\gamma}$ by Murine Splenocytes, and effect of OVA-induced total IgE and OVA-Specific IgE. The results were as follows ; 1. In IL-4 study, Gamigyeji-tang treated group was proved significant inhibitory effect(p〈0.005) 2. In IL-5 study, Gamigyeji-tang treated group was proved significant inhibitory effect.(p〈0.05) 3. In IFN-${\gamma}$ study, Gamigyeji-tang treated group was proved significant inhibitory effect(p〈0.000001) 4. In Total IgE, Gamigyeji-tang treated group didn't showed significant inhibitory effect. 5. In OVA-specific IgE, Gamigyeji-tang treated group didn't showed significant inhibitory effect. According to this result, Gamigyejj-tang was concluded to be effective on anti-allergic action. More studies are required to investigate the mechanism of inhibition by herbal medicine in allergic rhinitis model.

• Korean Journal of Pharmacognosy
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• v.51 no.4
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• pp.317-324
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• 2020

Mast cells play a key role in IgE-mediated allergic response. We investigated whether Swertia pseudochinensis Hara extract (SPE) inhibits IgE-mediated allergic response in mast cells and an allergic animal model. Additionally, we explored SPE's mechanism of action in mast cells. Our results showed that SPE inhibited both antigen-stimulated degranulation and the production of TNF-α and IL-4 in bone marrow-derived mast cells (BMMCs) and rat basophilic leukemia (RBL)-2H3 cells. SPE also suppressed allergic response in IgE-mediated passive cutaneous anaphylaxis (PCA) in mice. As for the mechanism of action of SPE in mast cells, it inhibited the activation of Syk kinase, a critical signaling protein in the FcεRI-mediated signaling pathway, and also the activation of LAT, a downstream adaptor protein of Syk. We further observed the reduced activation of mitogen-activated protein (MAP) kinases (P38, ERK1/2, and JNK) and Akt in mast cells. Our results described for the first time that SPE has an anti-allergic effect by suppressing mast cells through the inhibition of Syk kinase. Therefore, SPE may be useful for the treatment of type I allergic diseases.

• The Korea Journal of Herbology
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• v.28 no.6
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• pp.15-23
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• 2013

Objectives : To clarify the possible effects of Sinapis Semen and Raphani Semen on the development of pulmonary eosinophilic inflammation in a asthmatic mouse model. Methods : BALBav/c mice were sensitized to OVA followed intratracheally and by aerosol allergene challenges. We investigated the effect of Sinapis Semen and Raphani Semen on airway hyperresponsiveness, eosinophiic infitratio, immune cell phenotype, The2 cytokine product, and OVA-spedific IgE production. Results : Total lung cells, eosinophils, and lung leukocytes, OVA specific IgE levels, and Th 2cytokine levels such as IL-5, IL-13, IL-17, TNF-alpha, and eotaxin in BALF were reduced compared with those of OVA sensitized asthma mice (control). The absolute numbers of $CD3^+$, $CD3^+/CD69^+$, $CD3^-/CCR3^+$, $CD4^+$, $CD8^+$, $Gr-1^+/CD11b^+$, $B220^+/CD22^+$, $B220^+/IgE^+$ cells in lung tissiues significantly reduced compared to those of control. Specially total lung cells in BALF and the absolute number of $CD3^+/CD69^+$ and, $B220^+/IgE^+$ cells in lung tissiue effectively reduced in Sinapis Semen plus Raphani Semen compared to those of Sinapis Semen and Raphani Semen. Conclusions : These results indicate that Sinapis Semen plus Raphani Semen has deep inhibitory effects on airway inflammation and hyperresponsiveness in asmatic mouse model and also has effect of suppression of IL-5, IL-13, IL-17, OVA specific IgE production in BALF. The results verified that Sinapis Semen, Raphani Semen, and Sinapis Semen plus Raphani Semen could act as a immunomodulator which possess anti-inflammatory and anti-asthmatic property by modulating the relationship of Th1/Th2 cytokine imbalance.

• Korean Journal of Medicinal Crop Science
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• v.15 no.2
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• pp.132-137
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• 2007

Inhibitory effect of Scutellaria baicalensis ethanol extracts (SR) on chemical mediator release and immunoglobulin (Ig) production from Sprague-Dawley rats originated cells as type I allergic reaction was examined. SR showed concentration-dependent inhibition on basal and concanavalin A (ConA)-stimulated Ig production. In the mesenteric lymph node lymphocytes, the inhibitory effect of SR on the IgE production in the presence of Con A was stronger than these on IgA and IgG production. Moreover, tumor necrosis factor-alpha $(TNF-{\alpha})$ production-inhibiting effect of SR in the presence ConA was observed. However, SR did not affect the production of $interferon-{\gamma}$. SR also inhibited histamine release from the peritoneal exudate cells stimulated with a calcium ionophore A23187. In the case of leukotriene B4, SR markedly inhibited it at the concentration of 100 mg/ml. From these results, ethanol extracts obtained from Scutellaria baicalensis may have an anti-allergic effect on the intestinal system of rats.

• The Journal of Korean Medicine
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• v.22 no.4
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• pp.10-21
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• 2001

Objective : To investigate the effect between Fructus Immaturus Ponciri (FIP, the immature fruit of Poncirus trifoliata) and Fructus Ponciri (FP, the ripe fruit of Poncirus trifoliata) on mast cell-mediated immediate-type allergic reactions. Methods : We performed anaphylactic reaction, histamine release, cAMP, $TNF-{\alpha}$, IgE. Results : The aqueous extract of FIP dose-dependently inhibited systemic and local allergic reaction was induced by compound 48/80 or anti-dinitrophenyl (DNP) IgE in a murine model. FIP also significantly inhibited mast cell-dependent ear swelling response induced by topical application of compound 48/80. When mice were orally pretreated with FIP, the plasma histamine levels were reduced in a dose-dependent manner. FIP dose-dependently inhibited histamine release from the rat peritoneal mast cells (RPMCs) was activated by compound 48/80 or anti-DNP IgE. The level of cAMP in RPMCs, when FIP was added, increased compared with that of a normal or control. In addition, FIP had a significant inhibitory effect on anti-DNP IgE-induced tumor necrosis factor-a ($TNF-{\alpha}$) production from the RPMCs and IgE produced by lipopolysaccharide-stimulated murine whole spleen cells or U266B1 as human IgE-bearing B cells. However, FP showed the lower inhibition rate than those of FIP in above all allergic reactions. Conclusion : These data have important implications for our understanding of the clinical effects of FIP and FP on allergic diseases, and FIP is more effective than FP on the allergic reaction.

• Journal of Microbiology and Biotechnology
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• v.27 no.6
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• pp.1071-1077
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• 2017

A rise in the occurrence of allergic diseases is attributed to the dysregulated balance of type 1/type 2 immunity, where type 2 T-helper (Th2) cells predominate over type 1 T-helper (Th1) cells, leading to an abnormally increased production of IgE in response to unharmful antigens. Kimchi, a traditional Korean fermented food, is a rich source of beneficial lactic acid bacteria. In this study, we investigated the ability of Enterococcus faecium FC-K derived from kimchi to induce type I immunity in the presence of Th2 polarizing conditions in vitro and in vivo. Stimulation of mouse peritoneal macrophages with E. faecium FC-K induced the production of tumor necrosis factor alpha, interleukin (IL)-6, and IL-12. Under the in vitro Th2 conditions in which splenic T cells were activated in the presence of IL-4, E. faecium FC-K enhanced the ability of T cells to produce interferon $(IFN)-{\gamma}$. Using the ovalbumin (OVA)-induced allergy model, male BALB/c mice receiving E. faecium FC-K reduced the serum level of total IgE, but not that of OVA-specific IgE. Furthermore, the population of activated splenic B cells during OVA immunization was decreased in E. faecium FC-K-treated mice, accounting for a reduction of total IgE in the serum. Restimulating splenocytes from OVA-immunized mice with OVA ex vivo resulted in an increased production of $IFN-{\gamma}$, with no effect on IL-4, in E. faecium FC-K-treated mice. These observations provide the evidence that E. faecium FC-K can be a beneficial probiotic strain that can modulate the Th2-mediated pathologic response.

• IMMUNE NETWORK
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• v.8 no.3
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• pp.98-105
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• 2008

Background: Allergic inflammation was induced by activated Th2 lymphocytes, leading to IgE production and eosinophil activation. A Th2 disproportion was shown in atopic children soon after birth. During specific allergen stimulation, an increase of Th2 cells was observed in most cases. In this study, we prepared new screening "whole blood" system for searching the anti-atopic materials. Cytokine production and IgE secretion from whole blood system were assessed and we confirmed the results by using animal system. Methods: Pathological features in NC/Nga mice are similar to those observed in human atopic dermatitis. Whole blood from NC/Nga mouse was stimulated by using TNCB (Th2 activator) or candidate materials of anti-atopic dermatitis, and the production of cytokines (IL-4, IL-12, and IFN-${\gamma}$) were measured by ELISA. In order to confirm the results of whole blood system, in vivo test was done by using NC/Nga mice. Results: In whole blood system, LPS and extracts of green tea, hardy orange and onion induced the production of IL-12 and IFN-${\gamma}$ while they reduced the production of IL-4. Also, LPS and extracts of onion reduced IgE production. Though atopic dermatitis was observed from a mouse stimulated with TNCB, it was not when a mouse was co-stimulated in LPS or extracts of onion. The results are same as those observed in whole blood system. Conclusion: Whole blood system was simple and speedy methods for searching a materials compared with the conventional high-cost animal system. And the results using whole blood system was proved to be reliable in our experiments for screening anti-atopic material. We expect that the system can be applied to other experiments for searching similar materials.

• Clinical and Experimental Pediatrics
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• v.45 no.7
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• pp.875-883
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• 2002

Purpose : Airways eosinophilia and increased IgE, characteristic features of asthma, result from a predominant Th2 response. In this study, we investigated the effect of CpG oligodeoxynucleotides (ODNs) on the inhibition of airways eosinophilia in mice with established airway inflammation. We also investigated the immunological mechanisms involved. Methods : Groups of BALB/c mice were sensitized intradermally with ovalbumin(OVA). At week 10, airway inflammation was induced by intranasal challenge of the mice with OVA. At week 14, the mice were challenged intranasally again with OVA in the presence and without the presence of CpG ODNs. Mice with saline administration served as negative controls. Bronchoalveolar lavage fluids(BALF) were obtained and eosinophils were counted. Th1 and Th2 cytokines in the spleen cell cultures were measured by ELISA. Serum OVA-specific IgE and IgG2a antibodies were also measured by ELISA. Results : BALF eosinophils were significantly inhibited in the CpG ODNs-treated mice(P<0.01). IgE and IgG2a levels increased significantly in both CpG ODNs-treated and untreated groups as compared to the negative control group; there was, however, no significant difference between the two groups four days after intranasal administration of CpG ODNs. Cytokine analysis revealed decreased production of IL-4, IL-5, and IL-13 and increased production of IL-12 in the CpG ODNs-treated group as compared to the untreated group. Interestingly, $IFN-{\gamma}$ levels were not upregulated in the CpG ODNs-treated group. Conclusion : CpG ODNs vaccination is a potentially useful approach for reversing airways eosinophilia in mice with established airways inflammation.