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        검색결과 1,819

        1.
        2025.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Though Farnesiferol C (FC) derived from Ferula asafoetida is known to have antiangiogenic and apoptotic effect in gastric, breast, nonsmall lung cancers, the underlying antitumor mechanism of FC is not fully understood so far. Hence, in the current study, apoptotic mechanism of FC was explored in colon cancers in association with carbon catabolite repression 4-negative on TATA-less 2 (CNOT2)/c-Myc signaling. Herein FC significantly increased cytotoxicity and reduced the number of colonies in HCT116 cells more effectively than in SW480 cells, though FC enhanced sub-G1 cell population in HCT116 and SW480 cells compared to untreated control. Consistently, FC activated the cleavages of Poly ADP-ribose polymerase (PARP) and Bax and attenuated the expression of pro-PARP and Cyclin D1 in HCT116 cells better than SW480 cells. Also, FC significantly reduced the expression of CNOT2 and c-Myc. Also, FC reduced of c-Myc stability in HCT116 cells by cycloheximide assay. Notably, CNOT2 depletion reduced the expression of c-Myc, while c-Myc depletion also attenuated the expression of CNOT2 in HCT116 cells, implying the crosstalk between CNOT2 and c-Myc. Furthermore, overexpression of c-Myc or CNOT2 promoted the expression of pro-PARP in HCT116 cells. Overall, these findings suggest that FC induces apoptosis via inhibition of CNOT2 and c-Myc in colon cancers for a potent anticancer candidate for further agriculture cultivation in Korea.
        4,000원
        2.
        2025.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study conducted to investigate potential differences in the activity of genes involved in volatile fatty acid (VFA) absorption, pH regulation, and energy metabolism in epithelial cells of forestomach administered either endophyte-infected (E+; 4.45 mg ergovaline/kg) or endophyte-free (E−) tall fescue seed. Twelve steers [body weight (BW) = 547 ± 9 kg] were fed alfalfa cubes at 1.5 × NEm and dosed 1 kg of ground tall fescue seed daily via rumen cannula for 21 days. On day 22, steers were slaughtered, and tissue samples were collected from the rumen, reticulum, omasum, and abomasum. Gene expression analysis revealed that monocarboxylate transporters (MCT), isoform 1 and MCT4 expression levels were significantly lower (p<0.05) in the rumen epithelium of steers dosed with E+ seed, while MCT2 expression remained unchanged. Similarly, sodium hydrogen exchanger (NHE), isoform 2 expression was significantly reduced (p<0.05) in the E+ seed, whereas NHE1 and NHE3 were unaffected by the seed treatment. Additionally, expression levels of down regulated in adenoma (DRA) and anion exchanger (AE), isoform 2 were lower (p<0.05) in the rumen epithelium of E+ steers, while putative anion transporter 1, sodium bicarbonate cotransporter, isoform 1, 3-hydroxy 3-methylglutaryl coenzyme A synthase, isoform 2, and sodium potassium ATPase pump, isoform 1 expression levels were not influenced by the seed treatment. Notably, gene expression in the reticulum, omasum, and abomasum epithelia was unaffected (p>0.05) by seed exposure. These findings suggest that endophyte-infected tall fescue seed may impair ruminal VFA absorption in its dissociated state (pH > 5.8) by downregulating MCT1 and MCT4, along with suppressing NHE2, DRA, and AE2. Therefore, this mechanism may partially explain the reduced weight gain associated with fescue toxicosis in cattle.
        4,000원
        3.
        2025.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The role of the gut microbiota in colorectal cancer (CRC) development has garnered attention, highlighting probiotics as potential adjuncts in CRC prevention and treatment. In recent years, probiotics and their derivatives have demonstrated mechanisms that may contribute to anticancer properties. This study investigates the cytotoxic effects of Bifidobacterium bifidum KCTC 3357, Lacticaseibacillus rhamnosus KCTC 5033, Limosilactobacillus reuteri VA 103, Bacillus galactosidilyticus VA 107, and Lactococcus taiwanensis VE101 on CT-26 mouse colon carcinoma cells using live cells, heat-killed cells (paraprobiotics), and cell-free supernatants (CFS, postbiotics) through an MTT assay. The results indicate that live bacterial strains, such as KCTC 3357, VA 103, and VA 107, promoted CT-26 cell viability, while heat-killed cells and CFS exhibited dose-dependent cytotoxicity. Inactivated forms of KCTC 3357 and VE 101, as well as CFS at 10 mg/mL concentration of KCTC 5033, VA 103, and VE 101, showed the strongest antiproliferative effects. These findings suggest that non-viable probiotic derivatives, such as paraprobiotics and postbiotics, offer promising therapeutic potential for CRC, providing a safer and more stable alternative to live probiotics. However, further research is required to explore their mechanisms of action, in vivo efficacy, and potential clinical applications.
        4,000원
        4.
        2025.03 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        Sympathetic innervation stimulates β-adrenergic receptors, triggering cyclic adenosine monophosphate (cAMP) production and enhancing protein secretion in salivary gland cells. While cAMP signaling, in conjunction with Ca2+ signaling, is essential for salivary gland function, the identified cAMP-producing G-protein-coupled receptors (GPCRs) remains limited. Here, we report the presence of cAMP-producing adenosine receptors in salivary gland cells. By reanalyzing publicly available single-cell transcriptome datasets of human and mouse submandibular glands, we identified mRNA expression of adenosine A1, A2A, A2B, and A3 receptors. Additionally, we confirmed that 5’-N-ethylcarboxamidoadenosine (NECA), an adenosine A2B receptor agonist, increases cAMP levels in human salivary gland cells, suggesting a physiological role for adenosine A2B receptors. Our findings enhance understanding of adenosine’s regulatory function in salivary glands and highlight new avenues for research on cAMPproducing adenosine receptors.
        4,000원
        5.
        2025.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        연료전지 핵심 소재인 고분자 전해질막은 높은 내화학성과 수소이온전도성을 갖는 과불소계 술폰산 이오노머가 주로 사용된다. 하지만 이러한 이오노머조차도 연료전지 구동 중 발생하는 라디칼 공격으로 인해 화학적 분해가 발생하여 장 기 내구성 확보에 어려움을 겪고 있다. 이를 완화하기 위해 라디칼 스캐빈저로 도입이 간편한 이온형 산화방지제를 적용하고 있으나, 연료전지 구동 중 전극 간 전위차에 의해 세륨 이온이 이동(cerium ion migration)하는 현상으로 스캐빈저 효과가 감 소하는 문제가 있다. 본 연구에서는 강화막 내에서 세륨 이온의 이동성을 조절하기 위한 방안으로 폴리에틸렌글리콜(PEG) 도입을 제시하였으며, 이를 통해 PEG 도입이 강화막의 내구성에 미치는 영향을 조사하였다.
        4,000원
        6.
        2025.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 기능성 화장품 소재 개발을 목표로 효모 유래 MPC의 세포 생리활성을 조사하였 다. 피부 세포주에 처리된 Cu와 Zn 이온 모두 세포 독성이 확인되었지만, 정제된 MPC는 결합된 금속 이온의 세포 독성을 획기적으로 제거하였다. 게다가 특정 농도의 MPC는 대조군과 비교하여 세포 생존 율을 오히려 약 20% 증가시켰다. MPC 중 효모 펩타이드-Cu(YP-Cu)는 UVB 자극으로 유도되는 세포 내 활성산소의 양을 약 30% 정도 유의하게 감소시켰지만, YP-Zn은 영향을 미치지 못했다. 또한, YP-Cu 처리는 피부 세포에서 콜라겐 유전자의 발현량을 2배 증가시켰고, 프로콜라겐 분비량은 1.7배 증 가시켰으며, UVB 자극에 의한 콜라겐 유전자의 발현 저해에도 효과적으로 대응했다. 결론적으로, 유리 금속 이온 자체는 세포독성 효과로 인해 화장품 소재에 적합하지 않지만, 정제된 MPC, 특히 YP-Cu는 이러한 금속 이온의 독성을 효과적으로 상쇄하고 세포 생존율을 향상시킬 뿐만 아니라, UVB 자극에 따 른 유해 효과를 완화하기 때문에 잠재적 기능성 화장품 소재로 사용될 수 있다.
        4,000원
        7.
        2024.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Pluripotent stem cells (PSCs) are undifferentiated cells with the potential to develop into all cell types in the body. They have the potential to replenish cells in tissues and organs, and have unique properties that make them a powerful tool for regenerative therapy. Embryonic stem cells (ESCs) derived from the inner cell mass of the blastocyst of pre-implantation embryo and epiblast stem cells (EpiSCs) derived from the epiblast layer of post-implantation embryo are the well-known PSCs. These stem cells can differentiate into any of three germ layers of germ cells (endoderm, mesoderm and ectoderm). Additionally, induced pluripotent stem cells (iPSCs) refer to adult somatic cells reprogrammed to return to the pluripotent state by introducing specific factors. This is a breakthrough in stem cell research because ethical concerns such as fertilized embryo destruction can be avoided. PSCs have tremendous potential in treating degenerative cells by generating the cells needed to replace damaged cells, which can also allow to generate specific cell types to study the mechanisms of the disease and create disease models that screen for potential drugs. However, if the proliferative capacity of PSCs is not controlled, there is a risk that tumors will form, as this can lead to uncontrolled growth in their proliferative capacity. In addition, when PSCs are used for therapeutic purposes, there is a risk that the body’s immune system rejects the transplanted cells when the transplanted cells do not originate from the patient’s own tissue. Taken together, PSC is the foundation of stem cell research and regenerative medicine, providing disease treatment and animal development understanding. We would like to explain the classification of PSCs based on their developmental potential, the types of PSCs (ESCs, EpiSCs and iPSCs), their pluripotent status (naïve vs. primed) and alkaline phosphatase (AP) in PSCs and PSCs in domestic animals.
        4,000원
        8.
        2024.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Background: Pluripotent stem cells (PSCs) are capable of differencing into various cell types in the body, providing them valuable for therapy of degenerative diseases. Patientspecific treatments using PSCs, such as mesenchymal stem cells in patient’s own body, may reduce the risk of immune rejection. Inducing the differentiation of PSCs into vascular endothelial cells (ECs) altering culture conditions or using specific growth factors is able to applied to the treatment of vascular diseases. The purpose of this study was to induce the differentiation of porcine epiblast stem cells (pEpiSCs), bone marrow-derived mesenchymal stem cells (pBM-MSCs) and adipose-derived mesenchymal stem cells (pAMSCs) into ECs and then examine the functionality of vascular ECs. Methods: Porcine pEpiSCs, pBM-MSCs and pA-MSCs were induced to differentiate into ECs on matrigel-coated plates in differentiation medium (EBM-2 + 50 ng/mL of VEGF) for 8 days. Cells differentiated from these stem cells were isolated using CD-31 positive (+) magnetic-activated cell sorting (MACS) and then proliferated in M199 medium. Evaluation of ECs differentiated from these stem cells was treated with capillary-like structure formation and three-dimensional spheroid sprouting assay. Results: Porcine pEpiSCs, pBM-MSCs and pA-MSCs showed similar expression of pluripotency-related genes (OCT-3/4. NANOG, SOX2). These stem cells were differentiated into vascular ECs, but showed different morphologies after the differentiation. Cells differentiated from pEpiSCs showed an elongated spindle-like morphology, whereas cells differentiated from pBM-MSCs showed a round pebble-like morphology. In the case of pA-MSCs, these two morphologies were mixed with each other. Additionally, vascular ECs differentiated from these stem cells showed different formation of capillary-like structure formation and three-dimensional spheroid sprouting assay. Conclusions: Cells differentiated from pEpiSCs, pBM-MSCs and pA-MSCs presented the functionality of different vascular ECs, demonstrating the potential of the excellent ECs differentiated from pEpiSCs.
        4,900원
        9.
        2024.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Background: The ability of adeno-associated viruses (AAVs) to transduce various cell types with minimal immune responses renders them prominent vectors for gene editing (GE), with different AAV serotypes exhibiting distinct transduction efficiencies due to their specific cellular tropism. However, detailed molecular processes of AAV infection and penetration, as well as the optimal serotype for specific purposes, remain poorly understood. Porcine models are widely used in research benefitting both human and livestock due to anatomical and physiological similarities to humans. Methods: Transduction efficiencies of 18 AAV serotypes (AAV1–9, 6.2, rh10, DJ, DJ/8, PHP.eB, PHP.S, 2-retro, 2-QuadYF, and 2.7m8) were evaluated in immortalized porcine lung epithelial cells (pLCsImt) and pulmonary alveolar macrophages 3D4/31 (PAMs 3D4/31). Results: We found AAV2, DJ, and 2.7m8 to be the most effective in both cell types. The highest enhanced green fluorescent protein expression of 52.46 ± 2.4% in pLCsImt and 64.08 ± 2.4% in PAMs 3D4/31 was observed for AAV2, while negligible transduction was observed for AAV4, rh10, DJ, PHP.eB, PHP.S, and 2-retro. AAV-DJ showed superior transduction efficiency in PK-15, as compared to AAV2 and 2.7m8. Results emphasize the cell type-specific nature of AAV serotype transduction efficiencies. Notably, AAV2 was most effective in both lung and macrophage cells, whereas AAV-DJ was more effective in renal cells. Conclusions: Our findings suggest that AAV2 was identified as the most efficient serotype for transducing pLCsImt and PAMs 3D4/31, compare to the PK-15 cells. Understanding cell type-specific preferences of AAV serotypes offer crucial insight for tailoring AAV vectors to specific tissue and optimizing genome editing strategies, with potential implications for the advancement of personalized medicine and development of treatments for human and livestock.
        4,500원
        10.
        2024.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        For centuries, humans have leveraged the health-promoting properties of plants for our well-being. While research has been conducted on numerous medicinal plants, the specific benefits of many species remain underexplored. Eupatorium Japonicum (EJ), a member of the Asteraceae family, has historically been consumed in Japan, South Korea, China, and Vietnam for its traditional use in soothing digestive issues. This study aimed to explore the radical scavenging and antiinflammatory efficacy of EJ extract using RAW 264.7 cells. The radical-scavenging effects were assessed using the DPPH and ABTS assays, where an anti-oxidative molecule in the test sample will react with a stable free radical in DPPH and ABTS causing discoloration. The anti-inflammatory efficacy was assessed using the nitric oxide (NO) assay in LPS-induced RAW 264.7 cells, where the amount of NO produced in response to infection was measured using Griess reagent. Reversetranscriptase polymerase chain reaction (RT-PCR) and real-time PCR were executed to confirm the anti-inflammatory activity by measuring the RNA levels of pro-inflammatory cytokines. The DPPH and ABTS assays revealed that EJ extract decreased oxidation in a concentration-dependent manner (7.8-1,000 μg/mL) compared to ascorbic acid and Trolox respectively. EJ extract significantly reduced NO production concentration independently. Furthermore, EJ extract showed no cytotoxic effects as determined through the MTT assay. RT-PCR and real-time PCR analyses revealed inhibition of mRNA expression of pro-inflammatory cytokines (iNOS, COX-2, TNF-α, and IL-6). Western blotting demonstrated EJ’s anti-inflammatory activity by reducing protein levels of iNOS, COX-2, TNF-α, and IL-6. These findings suggest that EJ extract exhibits anti-inflammatory activities and can be further evaluated in the future.
        4,200원
        11.
        2024.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Baicalin, a flavonoid isolated from Scutellaria baicalensis, has anti-inflammatory, antioxidant, and neuroprotective effects. Glutamate is a major neurotransmitter that plays an important role in brain function, but excessive release of glutamate causes excitotoxicity and damages cells. We investigated the neuroprotective effects of baicalin in glutamate-exposed neurons. The mouse hippocampal neuronal cell line (HT22) was cultured in a general manner, glutamate and/or baicalin were treated on the cells. Baicalin was administered 1 hr before glutamate treatment. Cells were collected 24 hr after glutamate, and cell viability was measured using MTT assay. Reactive oxygen species (ROS) and lipid peroxidation (LPO) assays were performed to measure oxidative stress. Glutamate reduced cell viability in a dose- and time-dependent manner. MTT assay showed that baicalin treatment ameliorated the decrease in cell viability due to glutamate toxicity. The effect of baicalin is dose-dependent. Glutamate caused severe nerve damage, including condensation of the cell shape, loss of dendrites and axons. However, baicalin treatment attenuated these morphological changes, and the effect of baicalin was dose-dependent. ROS and LPO analyses showed that glutamate increases oxidative stress, and baicalin attenuates this change due to glutamate toxicity. The effect of baicalin on these results was dose-dependent. We confirmed that baicalin performs an antioxidant function against glutamate toxicity in neurons. In conclusion, these results suggest that baicalin exerts neuroprotective effects on damaged neurons through antioxidant activity.
        4,000원
        12.
        2024.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Lactobacillus is a probiotics that improves various diseases and enhances immunity through the activation of cytokines involved in natural immunity. A variety of studies on immunoregulation have been conducted on various Lactobacillus, but few on Lactobacillus johnsonii (Lj) and especially on immune cells. In this study, we investigated how Lj affects the viability and function of RAW264.7 macrophages. The results indicated that Lj decreased the metabolic activity of RAW 264.7 cells and caused a decrease in the number of cells. In Annexin V and PI staining, the viable cells was significantly decreased at 107 cfu/mL Lj concentration. Measurement of cytokines using enzyme-linked immunosorbent assay (ELISA) showed that Lj increased the production of tumor necrosis factor (TNF)-alpha. Also, Lj increased the expression of CD40 and CD86, confirmed by flow cytometry analysis. Taken together, Lj caused decreased metabolic activity and cell viability, but simultaneously increased the expression of macrophage activation markers and TNF-alpha production. Therefore, when an appropriate dosage of Lj is administered, it is expected that the necessary immunomodulation can be increased while minimizing damage on cells. This study provided evidences for the immunomodulatory effects of Lj on RAW 264.7 cells in vitro and is expected to be a valuable information for Lj research.
        4,000원
        13.
        2024.12 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        Mesenchymal stem cells (MSCs) have emerged as a promising therapeutic resource for the peripheral nervous system (PNS) and central nervous system (CNS) that is attributable to their capacity for neuronal differentiation. Human dental pulp stem cells (hDPSCs), which exhibit MSC-like traits, can differentiate into neuron-like cells and secrete critical neurotrophic factors; however, their therapeutic potential in peripheral nerve injury remains unexplored. This study investigated the regenerative effects of hDPSC transplantation following sciatic nerve injury (SNI) in rats. Transplantation of hDPSCs, STRO-1+ hDPSCs, or CD146+ hDPSCs after sciatic nerve transection in rats upregulated the levels of β3 tubulin, a marker of immature newborn neurons. Furthermore, the levels of glial cellderived neurotrophic factor, insulin-like growth factor 2, and the neuroregenerative factor NeuroD1 were upregulated. Motor dysfunction in rats with SNI was restored, as demonstrated by significantly higher sciatic functional index scores compared with the sciatic nerve transection group without transplantation. Transplantation of hDPSCs into injured peripheral nerves results in the upregulation of neurotrophic factors, differentiation into immature neurons, and promotion of motor function recovery. This approach holds promise as a valuable therapeutic strategy for repairing injured peripheral sciatic nerves, potentially providing a solution for nerve damage in both the PNS and CNS.
        4,500원
        14.
        2024.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        세계적인 탄소중립 정책 추진과 수소 에너지 수요 증가에 따라 고분자 전해질 수전해 및 연료전지 기술 개발이 활발히 이루어지고 있다. 해당 기술의 핵심 소재인 과불소계 술폰산 이오노머는 우수한 전기화학적 특성과 화학적 안정성을 가지고 있지만, 높은 제조비용, 한정된 공급망, 강화되는 환경 규제와 같은 문제로 인해 효과적인 재활용 및 재제조 기술이 요구되고 있다. 본 연구에서는 초임계 분산 기술을 통해 전해질막 및 막-전극접합체의 제조과정에서 발생하는 고활성을 갖는 전해질막 스크랩을 연료전지 전극바인더로 재제조하는 방법을 제시하고자 한다.
        4,000원
        15.
        2024.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        고온 구동형 고분자 전해질 막 연료전지(high temperature polymer electrolyte membrane fuel cell, HT-PEMFC)는 구동 중 발생되는 불순물에 대한 내성이 높고 물관리가 용이하며 고순도의 가스를 연료로 사용하지 않아도 되는 장점을 갖는 다. HT-PEMFC는 인산이 도핑된 막을 통해 수소이온이 전도되기 때문에 전해질 막의 높은 인산의 유지율이 요구된다. 본 총 설에서는 인산의 침출을 방지하여 고성능의 HT-PEMFC용 고분자 전해질 막을 개발하기 위해 1) 인산이 도핑된 전해질 막의 인산 침출에 영향을 미치는 요소를 파악한 후, 이를 개선하기 위해 2) 폴리벤즈이미다졸 기반 막과 인산과의 상호작용을 강 화하여 인산 침출을 방지할 수 있도록 고분자 구조 설계를 진행한 연구와 3) 이오노머의 이온교환 작용기와 인산과의 이온 쌍 상호작용을 통해 인산의 침출을 방지할 수 있도록 이오노머 구조 설계를 진행한 연구들에 대해 살펴보고자 한다.
        5,100원
        16.
        2024.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Chrysanthemum coronarium L (CC)., a leafy vegetable, has various biological properties, including anti-oxidative, antiinflammatory, antiproliferative, and anti-osteoporosis effects. However, the vascular protective effects of CC remain poorly understood. In this study, we identified the vascular protective effect of CC against ferroptosis in aortic thoracic smooth muscle A7r5 cells. The vascular protective effects of CC against erastin (Era)-induced A7r5 cells were assessed by estimating cell viability, glutathione (GSH) levels, lipid peroxidation, mitochondrial morphological change, and using western blot analysis. The CC treatment effectively ameliorated Era-induced ferroptotic cytotoxicity, including cellular death. The treatment also suppressed mitochondrial morphological change in the Era-induced A7r5 cells. CC significantly regulated Era-induced abnormal mechanisms related to GSH, lipid peroxidation, cysteine/glutamate antiporter SLC7A11 (xCT), and glutathione peroxidase 4 (GPX4) protein expression in A7r5 cells. In conclusion, these findings indicate that CC shows potential as a functional food supplement, nutraceutical, or medicinal food, with protective effects with respect to vascular health by regulating ferroptosis.
        4,000원
        17.
        2024.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Advanced glycation end products (AGEs) trigger various metabolic diseases and accumulate in the organs during the onset of metabolic diseases. The AGE-receptor for AGE (RAGE) interactions are strongly associated with the onset of chronic renal disease and diabetic nephropathy. This study evaluated the effects of glyoxal-lysine dimer (GOLD) and methylglyoxal-lysine dimer (MOLD) accumulation on various mechanisms in SV40 MES 13 kidney cells, which are currently unclear. GOLD and MOLD showed different effects on oxidative stress, inflammation, mitochondrial dysfunction, autophagy, and apoptosis. GOLD did not induce cytotoxicity or interact with RAGE. By contrast, MOLD significantly reduced the cell viability and interacted with RAGE. This study tested whether the RAGE interaction could cause differences in the effects of GOLD and MOLD on the mechanisms studied. GOLD did not generate oxidative stress or interact with RAGE and did not show toxicity through other mechanisms. Nevertheless, MOLD caused oxidative stress, inflammation, mitochondrial dysfunction, and apoptosis, which are representative glucotoxicity mechanisms of AGE-RAGE interactions, and autophagy. Overall, these findings suggest that AGEs may show different toxicities in various organs. GOLD accumulation in the kidneys might not affect disease occurrence, but MOLD accumulation can promote disease.
        4,200원
        18.
        2024.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Ganoderma lucidum, a fungus of significant scientific interest that encompasses a diverse array of bioactive compounds, has been extensively investigated for its potential health-promoting and disease-preventing properties. Ganodermanontriol, a triterpenoid, is the principal active component contributing to its biological activities. This study aimed to explore the anti-inflammatory properties of ganodermanontriol and to evaluate its potential as a functional ingredient. The expression of inflammatory mediators, including tumor necrosis factor (TNF)-α and inducible nitric oxide synthase (iNOS), and nitric oxide (NO) production was significantly inhibited in ganodermanontriol (1.25–5 μg/mL)-treated compared to that of untreated lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. Additionally, the phosphorylation of mitogen-activated protein kinases (MAPK), specifically p38 and c-Jun N-terminal kinase (JNK), was markedly inhibited in ganodermanontriol (3–5 μg/mL)-treated cells. These findings indicate that ganodermanontriol possesses significant potential as both a prophylactic and therapeutic agent for immune-related disorders, owing to its ability to modulate inflammatory responses.
        4,000원
        19.
        2024.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Natural products have recently emerged as promising candidates for anticancer therapeutics. However, research on their use as adjuvants to existing chemotherapeutic agents in the treatment of oral squamous cell carcinoma (OSCC) remains limited. This study investigated the potential of METO, a methanol extract derived from Thuja orientalis, to induce apoptosis and its underlying mechanisms in the OSCC cell line HSC4. The results demonstrated that METO induces apoptosis in HSC4 cells, which is likely mediated through the activation of the ERK and JNK pathways, both of which were observed to be activated in METO-treated cells. Additionally, METO-induced apoptosis appears to involve signaling pathways associated with SOCS3 and p53. These findings highlight that METO exhibits strong anticancer activity in OSCC cells and suggest its potential as a promising chemotherapeutic agent for OSCC treatment.
        4,000원
        20.
        2024.11 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        This study investigates the performance characteristics of electrodeposited (ED) silver nanowires (AgNWs) networks as transparent conducting electrodes (TCEs) considering Cu(In,Ga)Se2 (CIGS) thin-film solar cells. The electrodeposition process uniformly deposits silver onto a network of spin-coated AgNWs, resulting in the enlargement of individual nanowire diameters and the formation of stronger interconnections between the AgNWs. This structural enhancement significantly improves both the electrical conductivity and thermal stability of the ED AgNW networks, making them more efficient and robust for practical applications in solar cells. The study comprehensively examines the optoelectronic properties of the ED AgNW networks, encompassing total and specular transmittance, transmission haze values, and sheet resistance, with varying durations of silver electrodeposition. Additionally, this study presents the current density (J)-voltage (V) characteristics of CIGS thin-film solar cells employing the ED AgNW TCEs, revealing how electrodeposition duration impacts overall device performance. These findings offer valuable insights for optimizing TCEs in not only thin-film solar cells but also in other optoelectronic devices, highlighting the potential for improved long-term stability across various applications without compromising performance.
        4,000원
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