• Korean Journal of Pharmacognosy
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• v.50 no.1
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• pp.37-45
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• 2019

Portulaca oleracea L. (PL) has been used in traditional medicine herb for treatment of various diseases, such as diarrhea, dysentery, and skin inflammation. Previous studies have shown that the PL regulates the inflammation by inhibition of pro-inflammatory cytokines. Although PL might have improvement effects of intestinal function and bioactive effects, there are not enough studies to demonstrate. This study investigated the effects of KDC16-2 on the improvement of intestinal function and anti-inflammatory effects in vivo and in vitro. The improvement effect of intestinal function was measured fecal amount, water content and intestinal transit rate in KDC16-2 treated ICR mice. As results, compared with the control group, the KDC16-2 group showed a significant increase in wet fecal weight, dry fecal weight and fecal water content. The intestinal transit rate of KDC16-2 group was significantly increased. Based on the results, KDC16-2 is considered to have effects on improving intestinal function. The effect of anti-inflammatory demonstrated by using dextran sulfate sodium (DSS)-induced colitis mice. The mice were administered 3% DSS along with KDC16-2 (100, 300 mg/kg) for 14 days. DSS-induced colitis mice were significantly ameliorated in KDC16-2 treated group, including body weight loss, colon length shortening, tight junction protein of colon and histological colon injury. The levels of inflammatory mediators (IgG2a, IgA, C-reactive protein and Myeloperoxidase) and pro-inflammatory cytokines (tumor necrosis factor (TNF)-${\alpha}$, Interleukin (IL)-6) which are involved in inflammatory responses were increased in the DSS-treated group as compared to those in the control group, and the levels were significantly decreased in the KDC16-2 groups. In addition, we investigated the impact of KDC16-2 on lipopolysaccharide (LPS)-induced inflammatory responses in J774A.1 cells. KDC16-2 inhibited production of prostaglandin E2 (PGE2) and reactive oxygen species (ROS). These results suggested that the KDC16-2 could effectively alleviate the dysfunction of intestinal and inflammatory mediators. Thus, these KDC16-2 can be potentially used as health functional food of intestinal.

• Journal of Physiology & Pathology in Korean Medicine
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• v.18 no.5
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• pp.1337-1342
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• 2004

The purpose of this research was to investigate the immunoregulatory effect and the leukemia cell apoptosis of EtOH extract of OGAPI(OGP). The proliferation of cultured splenocytes, thymocytes and mesenteric lymph node cells were enhanced by the addition of OGP. Splenic and thymic T lymphocytes, especially TH and Tc cells were significantly increased in OGP-administered mice. OGP markedly increased the production of γ-interferon in mice serum and accelerated the phagocytic activity in peritoneal macrophages. OGP treatment enhanced the apoptosis of L1210 mouse leukemia and Jurkat, Molt4 human leukemia cells, and increased the expression of apoptosis-related ICE, c-myc, p53 gene in Jurkat cell. These results suggest that OGP have an immunoregulatory action and anti-cancer activity.

• Journal of Marine Bioscience and Biotechnology
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• v.12 no.2
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• pp.75-80
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• 2020

In the present study, the estrogenic activity and anti-osteoclastogenic activity of the Myelophycus simplex extract were evaluated using T47D-Kbluc cells and bone marrow-derived macrophages (BMMs). As a result of the measurement of the estrogenic activity in the T47D-Kbluc cell line, the Myelophycus simplex extract showed increased estrogenic activity in a dose-dependent manner in association with its concentration. To confirm the regulatory effect of the Myelophycus simplex extract on the estrogen-responsive gene, the Myelophycus simplex extract showed a similar tendency to estradiol: the expression of estrogen receptor 1 (ESR1) was significantly decreased while the expression of estrogen receptor 2 (ESR2) was increased. Furthermore, the Myelophycus simplex extract exhibited an inhibitory effect on osteoclast differentiation. In conclusion, these Myelophycus simplex extracts might be regarded as candidates for further studies or the development of functional food products or medicine to prevent or avoid postmenopausal symptoms for women.

• Food Science of Animal Resources
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• v.30 no.1
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• pp.1-12
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• 2010

The immune system is generally divided into the innate and the adopted immune systems, both protecting the body from pathogens. Recently, allergies, a disease associated with an imbalanced immune system, have increased rapidly in developed countries. Prevailing symptoms of allergic diseases are eczema, allergic rhinitis, asthma, inflammatory bowel disease, and food allergy. Probiotic bacteria, mainly consisting of lactic acid bacteria, are used in the prevention and treatment of allergic diseases. The function of them is to stimulate the intestinal immune cells and form a complex signal network to activate other immune cells. Beneficial health effects of probiotics are based on the hygiene hypothesis, which suggests that sanitary environment is important for health, but limited exposure to environmental factors increases allergic diseases. An immunoregulatory effect of probiotic bacteria is demonstrated by controlled trial, animal model, in vitro, in vivo and ex vivo designs. However, the immunoregulatory effect of probiotic bacteria is controversial because it depends on probiotic strains, a dose and a type of diseases. In this review, we discussed clinical evidences on immunoregulatory effects of probiotic bacteria.

• YAKHAK HOEJI
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• v.57 no.1
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• pp.37-42
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• 2013

In this present study, we determined the immunoregulatory activity of ginsenoside Rd extract from Panax ginseng. To determine the activity, we tested Rd against $CD4^+$ Th cells in a murine model of type 1 diabetes, which involves Th1-dominant immunity. The type 1 diabetes was caused by streptozotocin (STZ) and the severity of the diabetes was evaluated by measuring the degree of hyperglycemia, a major symptom of diabetes. The data resulting from experiments showed that ginsenoside Rd induced a greater level of Th1 type cytokines [IFN-${\gamma}$ & IL-2] than Th2 type [IL-4 & IL-10] (P<0.05), which was determined by cytokine profile analysis. In the animal model of diabetes, the depletion of $CD4^+$ Th cells by a treatment of anti-CD4 mAb resulted in considerably lower values of blood-glucose levels than those of the mAb-untreated mice, which indicates that the Th1 immune response from $CD4^+$ Th cells are responsible for diabetes. Based on these observations, the effect of Rd on diabetes was examined in the same animal model. Results showed that Rd-treated mice groups had increased levels of blood glucose compared to Rd-untreated mice groups that were used as a negative control (P<0.05). In other words, Rd aggravated the diabetes via the Th1 immune response. In conclusion, ginsenoside Rd had an immunoregulatory activity of Th1-dominant immunity.

• Journal of Physiology & Pathology in Korean Medicine
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• v.16 no.2
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• pp.267-271
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• 2002

The purpose of this research was to investigate the immunoregulatory effect, apoptosis of L 1210 leukemia cells of Comus officinalis Sieb.et Zucc. The proliferation of cultured splenocytes and thymocytes were enhanced by the addition of SSY. Splenic, thymic and mesenteric lymph node-T lymphocytes, especially TH cells was significantly increased in SSY-administered (p.o. for 7 days) mice. SSY treatment induced the apoptosis of L1210 mouse leukemia cells. In addition, SSY accelerated the phagocytic activity and nitric oxide production in peritoneal macrophages. These results suggest that SSY have an immuno-regulatory property and anti-cancer effect.

• Korean Journal of Food Science and Technology
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• v.33 no.3
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• pp.384-388
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• 2001

The effects of MeOH extracts of Schizandra chinensis fructus (SZX) on the immunoregulatory effect (lymphocyte proliferation, subpopulation, nitric oxide production, phagocytic activity) and apoptosis $(sub-G_1\;peak)$ of L1210 cells were examined. The proliferation of splenocytes and thymocytes were enhanced by the addition of $10\;{\mu}g/mL$ of SZX. SZX were administered p.o. once a day for 7 days in adult male BALB/c mice. SZX resulted in altering subpopulation of splenic B and/or T and thymic T lymphocytes, especially the number of $T_H$ cells were markedly increased by the treatment of SZX in vivo and in vitro. SZX treatment induced the apoptotic cell death in L1210 mouse leukemia cells. In addition, SZX accelerated the production of nitric oxide and phagocytic activity in peritoneal macrophages. These results suggest that SZX have an immunoregulatory property and anti-cancer action.

• Advances in Traditional Medicine
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• v.3 no.2
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• pp.90-99
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• 2003

There are several data in the literature indicating a great variety of pharmacological activities of Polypodium genus, which exhibit antiinflammatory and immunomodulatory activities. Since one of our main interests is to obtain natural immunoregulatory agents devoid of pharmacological adverse effects, we used flow cytometry analysis to highlight relative contributions of a water-soluble fraction of different concentrations of Polypodium rhizome extracts on lymphocyte subpopulations, NK and LAK activity. To measure their potential immunoregulatory activity a T cell proliferation assay in response to phytohemaglutinin (PHA) and mixed lymphocyte reactions were chosen. As a confirmatory bioassay we studied the effect of our extracts on CD45RO and CD95 antigen expressions. The results indicate that CD95 expression dramatically increases after peripheral blood lymphocyte activation and treatment with Polypodium leucotomus, cambricum and vulgare extracts, suggesting a powerful intrinsic pro-apoptotic effect.

• The Journal of Pediatrics of Korean Medicine
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• v.18 no.2
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• pp.31-48
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• 2004

Objective : KagamJwagwiEum(KJE) has been used for the purpose of prevention and treatment of bronchial asthma and allergic asthma in Korea. To investigate the biological effect of KJE, the author examined cytotoxicity and inflammatory cytokines secretion with human leukemic mast cell line, HMC-1. Methods: HMC-1 was stimulated with phorbol 12-myristate 13-acetate(PMA) and calcium ionophore A23187. KJE by itself had no effect on viability of HMC-l. The effects of KJE on the secretion of tumor necrosis $factor-alpha(TNF-{\alpha})$, interleukin(IL)-6 and IL-8 from HMC-1 were evaluated with enzyme-linked immunosorbent assay. Results : KJE inhibited PMA plus A23187-induced $TNF-{\alpha}$ and IL-6 secretion. But KJE had no effect IL-8 secretion: KJE had immunoregulatory effects on cytokines, increased secretion of NO and $TNF-{\alpha}$ but did not effect IL-12 secretion when the cells were primed and trigged with $IFN-{\gamma}$ in the peritoneal macrophages of C57BL/6 mice. Conclusions : Taken together, these results suggest that KJE inhibit the production of inflammatory cytokines in HMC-1 cells and activate macrophages.

• 한국약용작물학회:학술대회논문집
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• 2009.05a
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• pp.299-300
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• 2009