Uralensis Extract Research Articles

Phytoestrogens as Natural Anti-Aging Solutions for Enhanced Collagen Synthesis in Skin.

The dermal extracellular matrix (ECM) is a dynamic scaffold composed mainly of proteins, with collagen as the key structural component providing resilience and support to the skin. Post-menopause, declining estrogen levels lead to a significant reduction in skin health, notably a 30% decrease in collagen types I and III within 5 years. To discover natural extracts that stimulate collagen production. We utilized PathwayStudio to analyze protein-protein interactions and identify regulators of essential collagen types. Our study assessed Glycyrrhiza uralensis extract's ability to boost collagen production and enhance dermal density both invitro and invivo. PathwayStudio analysis highlighted phytoestrogens including glycyrrhizin, isoliquiritigenin, liquiritigenin, liquiritin, and glabrol, as potential candidates. Liquorice rhizome (G. uralensis), used in traditional Chinese medicine, is rich in phytoestrogens like liquiritigenin. The G. uralensis extract increased collagen I and III gene expression and pro-collagen I protein levels in human dermal fibroblasts and inhibited UVB and pollution-induced matrix metalloproteinase-1 (MMP1) production. In an invivo study, a topical formulation containing the extract significantly improved dermal density after 56 days, measured by the DUB SkinScanner. These findings suggest G. uralensis extract as a promising agent for enhancing collagen production and skin health, particularly in postmenopausal women. Further research is needed to explore its mechanisms and long-term effects.

Glycyrrhiza uralensis extract improves dexamethasone-induced sarcopenia via regulating myostatin- and FoxO3a-mediated E3 ubiquitin ligase

Sarcopenia affects the skeletal muscle system and impairs physical activity. This study investigated the effects of Glycyrrhiza uralensis (GU) extract on ameliorating dexamethasone (DEX)-induced sarcopenia in C2C12 myoblasts and C57BL/6J mice. Initially, network pharmacology analysis determined the association between GU and DEX-induced sarcopenia and predicted potentially related signaling pathways. Subsequently, the protective effects of different GU extracts on DEX-induced damage in C2C12 myotubes were evaluated by cell viability assays and Jenner and Giemsa (J&G) staining. Finally, the GU extract screened in vitro was evaluated by body composition analysis, grip strength and endurance tests, serum analysis, histological analysis, and protein expression level analysis in DEX-induced C57BL/6J mice. Network pharmacology confirmed the correlation between GU and DEX-induced sarcopenia involving TNF, MSTN, and FoxO signaling pathways. In DEX-induced damaged myotubes, only GU water extract (GW) dose-dependently increased cell viability. J&G staining of GW-treated myotubes revealed that GW increased the cell fusion index, maturation index and myotube diameter, attenuating DEX-induced cell damage. Oral administration of GW at doses above 300 mg/kg/day restored lean body mass lost due to DEX and subsequently reduced body fat. GW also enhanced grip strength and endurance, reduced muscle tissue injury, and increased the cross-sectional area of muscle fibers in DEX-induced mice. GW reduced the inflammatory response by alleviating serum TNF-α levels and ultimately decreased E3 ubiquitin ligase (MAFbx and MuRF-1) by downregulating myostatin and promoting FoxO3a phosphorylation. These results suggest that GU inhibits muscle protein degradation and is a potential food and medicinal homolog for preventing or treating sarcopenia.

A synergistic mechanism of Liquiritin and Licochalcone B from Glycyrrhiza uralensis against COPD

BackgroundChronic Obstructive Pulmonary Disease (COPD) is a refractory respiratory disease mainly attributed to multiple pathological factors such as oxidative stress, infectious inflammation, and idiopathic fibrosis for decades. The medicinal plant Glycyrrhiza uralensis extract (ULE) was widely used to control respiratory diseases in China. However, the regulatory mechanism of scientific evidence to support the therapeutic benefits of ULE in the management of COPD is greatly limited. PurposeThis study aims to discover the potential protection mechanism of ULE on COPD via a muti-targets strategy. Study design and methodsThe present study set out to determine the potential protective effects of ULE on COPD through a multi-target strategy. In vivo and in vitro models of COPD were established using cigarette smoke and lipopolysaccharide to assess the protective effects of ULE. It was evaluated by measuring inflammatory cytokines and assessing pulmonary pathological changes. HPLC was used to verify the active compounds of the potential compounds that were collected and screened using HERB, works of literature, and ADME tools. The mechanisms of ULE in the treatment of COPD were explored using transcriptomics, connectivity-map, and network pharmacology approaches. The relevant targets were further investigated using RT-PCR, western blot, and immunohistochemistry. The HCK inhibitor (iHCK-37) was used to evaluate the potential mechanism of ULE's active compounds in the prevention of COPD. ResultsULE effectively protected the lungs of COPD mice from oxidative stress, inflammation, and fibrosis damage. After screening and verification using ADME properties and HPLC, 4 active compounds were identified in ULE: liquiritin (LQ), licochalcone B (LCB), licochalcone A (LCA), and echinatin (ET). Network pharmacology integrated with transcriptomics analysis showed that ULE mitigated oxidative stress, inflammation, and fibrosis in COPD by suppressing HCK. The combination of LCB and LQ was optimized for anti-inflammation, antioxidation, and anti-fibrosis activities. The iHCK-37 further validated the preventive treatment of LCB and LQ on COPD by inhibiting HCK to exert antioxidant, anti-inflammatory, and anti-fibrotic effects. The combination of LCB and LQ, in a 1:1 ratio, exerted synergistic antioxidative, anti-inflammatory, and anti-fibrotic effects in the treatment of COPD by downregulating HCK. ConclusionThe combination of LCB and LQ performed a significant anti-COPD effect via downregulating HCK.

Effect of supplementation with Glycyrrhiza uralensis extract and Lactobacillus acidophilus on growth performance and intestinal health in broiler chickens.

Intestinal microbiota community is an important factor affecting the nutritional and health status of poultry, and its balance is crucial for improving the overall health of poultry. The study aimed to investigate the effect of dietary supplementation with Glycyrrhiza uralensis extract (GUE), Lactobacillus acidophilus (Lac) and their combination (GL) on growth performance and intestinal health in broilers in an 84-day feeding experiment. Supplementary 0.1% GUE and 4.5×107 CFU/g Lac significantly increased average daily gain (ADG), and GL (0.1% GUE and 4.5×107 CFU/g Lac) increased ADG and average daily feed intake (ADFI), and decreased feed conversion rate (FCR) in broilers aged 29 to 84 d and 1 to 84 d. Dietary GUE, Lac and GL increased the superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX) activity and decreased Malondialdehyde (MDA) content in the jejunum mucosa of broilers, and increased secretory IgA (sIgA) content in broilers at 84 d. Moreover, GUE, Lac and GL increased cecal microbial richness and diversity, and modulated microbial community composition. Both GUE and Lac reduced the harmful bacteria Epsilonbacteraeota, Helicobacter, and H. pullorum at 28 d and Proteobacteria, Escherichia, and E. coli at 84 d, while Lac and GL increased beneficial bacteria Lactobacillus and L. gallinarum at 28 d. Compared with individual supplementation, GL markedly increased the SOD activity and the sIgA content, and reduced Helicobacter and Helicobacter pullorum. In conclusion, GUE and Lactobacillus acidophilus as feed additives benefit growth performance and intestinal health, and their combined use shows an even more positive effect in broilers.

Comparison of halitosis according to herbal mouthwash containing Glycyrrhiza uralensis extract and saline mouthwash: A randomized, double-blind, placebo-controlled study.

This study was conducted in order to determine the effect on halitosis and the antibacterial effect against halitosis-causing bacteria of the mouthwash made of the natural material, Glycyrrhiza uralensis (G. uralensis) extract. A randomized, double-blind, placebo-controlled study was conducted on 60 patients who visited M dental clinic located in Busan, South Korea, excluding those with systemic disease that may induce halitosis. There were 30 patients classified to the saline gargle group and the remaining 30 patients were classified to the G. uralensis extract gargle group. In addition, their level of halitosis and halitosis-causing bacteria were measured. They visited the dental clinic on a fasted state at baseline before gargle application (Baseline), immediately after gargle application (Treatment) and 5 days after gargle application (After 5 Days). For clinical indicators, participants were tested for halitosis and bacteria immediately after waking up without brushing their teeth and without hydration. The prevalence of halitosis decreased in the G. uralensis extract gargle group compared to the saline gargle group at Treatment and After 5 Days. In cases with pseudo halitosis, there was a significant decrease in halitosis-causing bacteria when G. uralensis extract gargle was applied (p < 0.05). It was identified that using a mouthwash made with G. uralensis extract is effective for halitosis improvement and reduction of halitosis-causing bacteria. Therefore, using a mouthwash containing G. uralensis extract, it will be effective in improving bad breath and oral hygiene will be possible.

Inhibition of Soluble Epoxide Hydrolase Activity by Components of Glycyrrhiza uralensis

Soluble epoxide hydrolase (sEH) is a target enzyme for the treatment of inflammation and cardiovascular disease. A Glycyrrhiza uralensis extract exhibited ~50% inhibition of sEH at 100 μg/mL, and column chromatography yielded compounds 1-11. Inhibitors 1, 4-6, 9, and 11 were non-competitive; inhibitors 3, 7, 8, and 10 were competitive. The IC50 value of inhibitor 10 was below 2 μM. Molecular simulation was used to identify the sEH binding site. Glycycoumarin (10) requires further evaluation in cells and animals.

감초 추출물과 저온 플라즈마의 병용 처리가 Streptococcus mutans에 미치는 효과

Objectives: The purpose of this study was to evaluate the antimicrobial effect of herbal medicine and low-temperature plasma on oral diseases involving bacteria, and to utilize it in the prevention and treatment of inflammatory oral diseases. Methods: Streptococcus mutans, which is known as main bacteria involved in dental caries, was treated with Glycyrrhiza uralensis extract and low-temperature plasma. Results: Co-treated Glycyrrhiza uralensis extract and low-temperature plasma showed exceptional antimicrobial effect on S. mutans. Conclusions: This study suggests that co-treatment with herb medicine and low-temperature plasma inhibit bacteria safely and effectively. This method can be used to contribute to the treatment of oral diseases.

재배기간을 달리한 감초 추출물의 항산화 및 미백 활성

The purpose of this study was to investigate the quality characteristics, antioxidant and skin-whitening activity of Glycyrrhiza uralensis extract cultivated for different periods. The physicochemical components such as pH, total acid, reducing sugar, and content of potent functional components (glycyrrhizin, glabridin, liquiritin, liquiritigenin and glycyrrhisoflavone) and the tyrosinase inhibitory activity were investigated. Also, the antioxidant activities such as DPPH, ABTS, and total phenolic and total flavonoid content were measured. The total phenolic and flavonoid contents were observed to be the highest in the 1-year-old (K1) sample group, and showed values of 18.32% and 6.94%, respectively. The 3-year-old (K3) sample showed the highest content of glycyrrhizin at 163.65 ㎎/100 g. Compared to the other samples, the K1 sample had a superior content of glabridin, liquiritin, liquiritigenin, and glycyrrhisoflavone. The K1 sample also showed the highest skin-whitening activity of 54.68±1.23%. Therefore, it was concluded that the K1 sample has good antioxidant and skin-whitening activity and thus has the potential not only as a food material but also as a cosmetic material and various industrial uses.

Traditional Chinese medicine extracts as novel corrosion inhibitors for AZ91 magnesium alloy in saline environment.

Zingiber officinale Roscoe extract, Raphanus sativus L. extract, Rheum palmatum extract, Coptis chinensis extract, Glycyrrhiza uralensis extract (GUE), Potentilla discolor extract (PDE) and Taraxacum officinale extract (TOE) were screened for the green corrosion inhibitors of AZ91 alloy in saline environment. The experiment results demonstrated that GUE, PDE and TOE can significantly enhance the corrosion resistance of AZ91 alloy by 73.4, 87.6 and 84.6%, respectively. Surface characterization using FTIR, UV–Vis and XPS revealed that the organic compounds of GUE, PDE and TOE can interact with the alloy surface to form a protective physisorbed film, effectively mitigating the corrosion process of AZ91 alloy. The present results may be helpful to discover the new green inhibitors with high inhibition efficiency for AZ91 alloy.

Glycyrrhiza uralensis attenuates TNF-\u03b1-induced muscle atrophy in myoblast cells through the Nrf2 and MAFbx signaling cascades

Muscle atrophy is associated with chronic diseases, such as heart failure diabetes, and aging-related diseases. Glycyrrhiza uralensis (GU) extract is widely used in traditional medicine. However, no studies have evaluated the effects of GU on muscle atrophy. Thus, in this study, we assessed the effects of GU on prevention of muscle atrophy. GU reduced the levels of the TNF-α-induced muscle atrophy markers, muscle RING-finger protein-1(Murf-1) and muscle atrophy F-box (MAFbx), and upregulated myosin heavy chain expression (MyHC). It also reduced the phosphorylation of nuclear factor kappa B, and downregulated Smad3 proteins, which are involved in protein ubiquitination. When we examined whether GU exhibits antioxidant activities. GU suppressed TNF-α-induced muscle atrophy by increasing the translocation of nuclear factor erythroid 2-related factor 2 (Nrf2), which regulates the expression of antioxidant factors such as heme oxygenase-1 (HO-1) as well as apoptosis-related factors, such as caspase-3/7. These results suggest that GU extract is potentially an important agent in the regulation of TNF-an induced muscle atrophy.

A Randomized, Double-Blind, Placebo-Controlled Clinical Trial of a Mouthwash Containing Glycyrrhiza uralensis Extract for Preventing Dental Caries.

This study sought to confirm the effect of using a mouthwash containing Glycyrrhiza uralensis extract for oral health management by investigating changes in the pH of dental plaque and bacteria that cause dental caries. A randomized, double-blind, placebo-controlled study was conducted on 60 subjects categorized in either the Glycyrrhiza uralensis extract gargle group (n = 30) or the saline gargle group (n = 30). Scaling was conducted in order to ensure the homogeneity of the oral environment, while gargling was performed once daily before the subjects went to bed for 5 days based on the group. Caries activity was assessed using the Cariview test, while detection of the bacteria that cause dental caries was confirmed using microbiological analysis. All clinical measurements and evaluations were conducted by two trained dental hygienists under the supervision of a dentist. Based on the analysis of dental caries activity and dental caries-causing bacteria, the Glycyrrhiza uralensis extract gargle group showed a clear decrease in bacteria compared to the saline gargle group. Glycyrrhiza uralensis extract demonstrated no risk of tooth demineralization. It also showed excellent antibacterial activity through inhibition and effective reduction of bacteria that cause dental caries. Therefore, the mouthwash containing Glycyrrhiza uralensis extract is an effective oral care product suitable for use as an effective dental caries prevention agent.

Antimicrobial Effects against Oral Pathogens and Cytotoxicity of Glycyrrhiza uralensis Extract.

We aimed to evaluate the antimicrobial effects of Glycyrrhiza uralensis extract on Streptococcus mutans and Candida albicans and its biocompatibility for dental applications. The antimicrobial activity of the G. uralensis extracts at concentrations of 50, 100, 150, and 200 µg/mL was assessed using agar disk diffusion tests, counting the total number of colony-forming units (CFUs), spectrophotometric growth inhibitory assays, and microbial morphology observations using scanning electron microscopy (SEM; Merin, Carl Zeiss, Oberkochen, Germany). We measured the polyphenol and flavonoid contents of G. uralensis extracts using ultraviolet–visible spectrometry and the cytotoxicity of these extracts using an MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. We identified that G. uralensis extracts had significant antimicrobial effects against S. mutans and C. albicans. The optical density of the experimental groups significantly decreased compared with that of the control group. SEM images revealed that the G. uralensis extract affected the morphology and density of S. mutans and C. albicans. The extract concentration of flavonoids, but not polyphenols, increased with increasing concentrations of the G. uralensis extract. Furthermore, cell viabilities were more than 70% for G. uralensis extracts with concentrations of 50 and 100 μg/mL. Naturally derived G. uralensis is biocompatible and exhibits an excellent antimicrobial effect against oral pathogens such as S. mutans and C. albicans. Thus, G. uralensis extracts can be used for the development of oral products that treat and prevent oral diseases.

Network Pharmacology-Based Approaches of Rheum undulatum Linne and Glycyrriza uralensis Fischer Imply their Regulation of Liver Failure with Hepatic Encephalopathy in Mice.

Rheum undulatum and Glycyrrhiza uralensis have been used as supplementary ingredients in various herbal medicines. They have been reported to have anti-inflammatory and antioxidant effects and, therefore, have potential in the treatment and prevention of various liver diseases. Considering that hepatic encephalopathy (HE) is often associated with chronic liver failure, we investigated whether an R. undulatum and G. uralensis extract mixture (RG) could reduce HE. We applied systems-based pharmacological tools to identify the active ingredients in RG and the pharmacological targets of RG by examining mechanism-of-action profiles. A CCl4-induced HE mouse model was used to investigate the therapeutic mechanisms of RG on HE. We successfully identified seven bioactive ingredients in RG with 40 potential targets. Based on an integrated target–disease network, RG was predicted to be effective in treating neurological diseases. In animal models, RG consistently relieved HE symptoms by protecting blood–brain barrier permeability via downregulation of matrix metalloproteinase-9 (MMP-9) and upregulation of claudin-5. In addition, RG inhibited mRNA expression levels of both interleukin (IL)-1β and transforming growth factor (TGF)-β1. Based on our results, RG is expected to function various biochemical processes involving neuroinflammation, suggesting that RG may be considered a therapeutic agent for treating not only chronic liver disease but also HE.

Surface Characterization and Antimicrobial Efficacy of Denture Base Resin Coated with Glycyrrhiza uralensis extract

Surface Characterization and Antimicrobial Efficacy of Denture Base Resin Coated with <i>Glycyrrhiza uralensis extract</i>

“LICONINE&lt;SUP&gt;®&lt;/SUP&gt;”, an Extract of Glycyrrhiza Uralensis, Normalizes the Fecal Microbiota Disturbance in Diet-induced Obese Mice

It has been reported that Glycyrrhiza uralensis (Ural licorice) extract, with the brand name “LICONINE®”, at an intake level of low risk (human equivalent to less than 1 g licorice per day) had anti-obesity and anti-inflammatory effects on high-fat high-sucrose (HFS) diet-induced obese mice, but the effect of LICONINE on the fecal microbiota has not been clarified. In the present study, effects of LICONINE versus Ural licorice at intake levels of low risk on the fecal microbiota Bacteroidetes and Firmicutes were examined in HFS diet-induced obese mice. The results demonstrated that consumption of LICONINE was associated with higher decrease in the body weight and visceral fat weight than those with Ural licorice. The results also demonstrated that the Firmicutes to Bacteroidetes ratio in the feces was decreased more with LICONINE than with Ural licorice, and that the body weight and visceral fat weight were correlated with the Firmicutes to Bacteroidetes ratio in HFS diet-induced obese mice. These results indicate that LICONINE, at an intake level of low risk, may reduce obesity through the normalization of the fecal microbiota disturbance. In summary, at the intake level of low risk, LICONINE is more effective than Ural licorice for treating obesity and fecal microbiota disturbance. Further research is needed to identify the mechanisms underlying the effects of LICONINE on fecal microbiota.

Glycyrrhiza uralensis and Semilicoisoflavone B Reduce Aβ Secretion by Increasing PPARγ Expression and Inhibiting STAT3 Phosphorylation to Inhibit BACE1 Expression.

Glycyrrhiza uralensis extract (GUE) has been reported to improve amyloid beta (Aβ)-induced cognitive deficits in mice. However, the mechanisms underlying this effect and the components involved have not been previously explored. Extracellular Aβ plaques are one of the major pathological hallmarks of Alzheimer's disease (AD). Therefore, decreasing Aβ levels is one strategy for preventing the etiology of AD. This study aims to test the effect of GUE and semilicoisoflavone B (SB) on Aβ secretion and investigates the mechanism underlying this effect. GUE and its bio-activated compound SB reduce Aβ secretion. We find that this effect contribute to the downregulation of the β-secretase-1 (BACE1) protein and mRNA. In a subsequent mechanism study, we find that GUE and SB regulate BACE1 transcription factors by inducing the expression of peroxisome proliferator activated receptor γ (PPARγ) and inhibiting the phosphorylation of signal transducer and activator of transcription 3. In addition, the effect of GUE and SB on BACE1 expression and Aβ secretion are attenuated by treatment with PPARγ-siRNA or its antagonist, GW9662. These findings indicate that GUE and SB may function as PPARγ agonists, thereby inhibiting BACE1 expression and ultimately reducing the secretion of Aβ.

The Anti-obesity and Anti-inflammatory Effects of “LICONINE™”, an Extract of Glycyrrhiza Uralensis, on Diet-induced Obese Mice and 3T3-L1 Mouse Adipocytes

The anti-obesity effect of Glycyrrhiza uralensis (Ural licorice) extract at the intake level of low risk has not been clarified. In the present study, the anti-obesity effects of Ural licorice, its extracts, its fractions and Glycyrrhizic acid at intake levels of low risk were examined in high-fat high-sucrose (HFS) diet-induced obese mice. Ural licorice extract, which was given the brand name “LICONINE™,” was the most effective extract; it decreased body weight, visceral fat weight, number of adipocyte crown-like structures, and adipocyte size in visceral fat. Low doses of LICONINE also had anti-obesity effects. The terpenoid fraction, but not flavonoid fraction, of LICONINE had an anti-obesity effect that did not depend exclusively on Glycyrrhizic acid. Next, we examined the effects of Ural licorice extracts, LICONINE fractions, and constituents of LICONINE terpenoid fraction on production of monocyte chemoattractant protein-1 in 3T3-L1 mouse adipocytes. LICONINE and its terpenoid fraction had anti-obesity and anti-inflammatory effects in both HFS diet-induced obese mice and 3T3-L1 adipocytes. Our results demonstrate for the first time that Licorice saponin G2, Licorice saponin H2, and Glycyrrhizic acid (all constituents of LICONINE terpenoid fraction) had anti-inflammatory effects in 3T3-L1 adipocytes. In summary, at the intake level of low risk (human equivalent to less than 1 g licorice per day), LICONINE is an effective extract of Ural licorice and the terpenoid fraction is an effective fraction of LICONINE for treating obesity. Further research is needed to identify the mechanism underlying the anti-obesity and anti-inflammatory effects of LICONINE and its terpenoid fraction.

Biological synthesis of gold and silver chloride nanoparticles by Glycyrrhiza uralensis and in vitro applications

The current study highlights the rapid biosynthesis of gold nanoparticles (Gu–AuNps) and silver chloride nanoparticles (Gu–AgClNps) by aqueous root extract of Glycyrrhiza uralensis, a medicinal plant. G. uralensis has been reported for anticancer and hepatoprotective effects. The reduction of chloroauric acid and silver nitrate by the Glycyrrhiza root extract prompted the formation of Gu–AuNps and Gu–AgClNps within 4 and 40 min at 80 °C, respectively. The complete reaction did not require supplemental reducing and stabilizing agents, which demonstrated green synthesis. Field emission transmission electron microscopy (FE-TEM) revealed the spherical shape of Gu–AuNps and Gu–AgClNps. X-ray diffraction (XRD) showed face-centred cubic structure of Gu–AuNps and Gu–AgClNps with average crystallite size 12.25 nm and 8.01 nm, respectively. The biosynthesized Gu–AgClNps served as competent antimicrobial agent against Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa and Salmonella enterica. Additionally, Gu–AuNps and Gu–AgClNps were analyzed for their catalytic ability to reduce methylene blue as model test pollutant. Likewise, both nanoparticles possessed free radical scavenging activity against 2,2-diphenyl-1-picrylhydrzyl (DPPH). Moreover, in vitro cytotoxicity in murine macrophage (RAW264.7) and human breast cancer (MCF7) cells were evaluated. Thus, the study proposes a green synthesis of Gu–AuNps and Gu–AgClNps by G. uralensis extract and in vitro biological applications.

대황과 감초 병용의 항산화 및 간보호효과

Objectives : Rheum undulatum Linne and Glycyrriza uralensis Fischer are widely used herbal medicine. In this study, anti-oxidant and liver protective effects of R. undunlatum extract (RUE) and G. uralensis extract (GUE) were investigated in HepG2 cells, respectively. Oxidative stress and liver fibrosis were induced by arachidonic acid (AA) and iron, and CCl₄.Methods : MTT assay was assessed for cell viability, and immunoblotting analysis was performed to detect expression of apoptosis related proteins. In addition, reactive oxygen species (ROS) and mitochondrial dysfunction were measured. In vivo, BALB/c mouse were orally administrated with the aqueous extract of 10 mg/kg RUE and 100 mg/kg GUE for 3 days and then, injected with CCl₄ 0.5 ml/kg body weight to induce acute liver damage. Serum ALT level was measured, and histological change was observed in Harris's hematoxylin and eosin stainResults : RUE and GUE pre-treatment increased relative cell viability in concentration dependent manner and altered the expression levels of apoptosis-related proteins such as procaspase 3, PARP and Bcl-xL. RUE and GUE also inhibited the mitochondrial dysfunction and excessive reactive oxygen species (ROS) production induced by AA and iron. In addition, RUE and GUE activated liver kinase B1 (LKB1), by increasing phosphorylation. Moreover, RUE and GUE treatment decreased liver injuries induced by CCl₄, as evidenced by decreases in histological liver damage as well as serum alanine amino transferase (ALT) level.Conclusions : These data suggest that RUE and GUE has anti-oxidant and liver protective effects against AA and iron-induced oxidative stress and CCl₄-induced liver injury.

Neuroprotection by Glycyrrhiza Uralensis Extract in Anxiety Animal Model Involves the iNOS/Nrf2 Pathway

Anxiety is a most common psychological disease, caused by stress. Many drugs for treated anxiety have various side effects and natural resources have a possibility as alternate material to eradicate these side effects. In this study is investigate inflammation modulate effects of Glycyrrhiza uralensis (GU) Extract in Forced Swimming Test (FST) induced depression rat model. 1 day after FST implemented during 15 min to training for rats, we measured FST and Y-maze test during each 6min, 3min to lock for acute effects of GU Extract, likewise measured behavior response with same method for chronic effects of GU Extract. We Received (May 07, 2015), Review Request(May 08, 2015), Review Result(May 26, 2015) Accepted(June 15, 2015), Published(August 31, 2015) 614-714 Dept. Clinical Laboratory Science, Dong-Eui Univ., Gaya 1-dong, Busanjin-gu, Busan, Korea email: excikind@naver.com 614-714 Dept. Clinical Laboratory Science, Dong-Eui Univ., Gaya 1-dong, Busanjin-gu, Busan, Korea email: rokmagnum@naver,com (Corresponding Author) 614-714 Dept. Clinical Laboratory Science, Dong-Eui Univ., Gaya 1-dong, Busanjin-gu, Busan, Korea email: kyhyun@deu.ac.kr Neuroprotection by Glycyrrhiza uralensis Extract in Anxiety animal Model Involves the iNOS/Nrf2 Pathway Copyright c 2015 HSST 156 orally administerd EU extract 100mg/kg and Sodium Tianeptine 10mg/kg. Researcher result showed oral administration of GUF Extracts significantly redused immobility time and increased total entries, total distance, down regulation of iNOS, Nrf2 expression in medulla oblongata and adrenal gland, anti-anxiety modulatory effect.