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        검색결과 65

        1.
        2023.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this study, we examined the antagonistic effects of sprout-borne lactic acid bacteria (LAB) on Salmonella enterica serovar Enteritidis. This antagonism is promoted as a means of controlling contamination during sprout production and provides additional LAB for consumers. We isolated a total of 24 LAB isolates in nine species and five genera from seven popular vegetable sprouts: alfalfa (Medicago sativa), clover (Trifolium pratense), broccoli (Brassica oleracea ssp. italica), vitamin (B. rapa ssp. narinosa), red radish (Raphanus sativus), red kohlrabi (B. oleracea var. gongylodes), and Kimchi cabbage (B. campestris var. pekinensis). Based on 16S rRNA gene sequences, the LAB species were identified as Enterococcus casseliflavus, E. faecium, E. gallinarum, E. mundtii, Lactococcus taiwanensis, Leuconostoc mesenteroides, Pediococcus pentosaceus, and Weissella cibaria, and W. confusa. A total of 16 LAB isolates in seven species including E. faecium, E. gallinarum, E. mundtii, L. taiwanensis, L. mesenteroides, P. pentosaceus, and W. cibaria showed antagonistic activity toward S. enterica. The growth inhibition of sprout LAB on S. enterica was confirmed by co-culture. Unexpectedly, sprout LAB failed to suppress the growth of S. enterica in alfalfa sprouts, whereas all LAB strains stimulate S. enterica growth even if it is not significant in some strains. The findings of this study indicate that S. enterica-antagonistic LAB are detrimental to food hygiene and will contribute to further LAB research and improved vegetable sprout production.
        4,000원
        4.
        2021.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        비모란 선인장 ‘Ahwang’ 품종이 2016년에 국립원예특작과 학원에서 육성되었다. 증식력이 우수한 밝은 황색 ‘Ahwang’ 품종 육성을 위해서, 황색 ‘Hwangun’품종을 모본으로, 황색 ‘0930001’ 계통을 부본으로 하여 2012년 6월 25일에 교배하였다. 어린 비모란 선인장을 2014년 이전에 삼각주에 2번 접목하여 계통을 양성하였으며 2014년부터 2016년까지 총 3회에 걸쳐 생육특성을 조사하였다. ‘Ahwang’ 품종의 모구는 편원형 모양에 황색 구색(Y9A)이다. 모구는 평균 8.6개의 능(rip)과 2.7mm의 짧은 직립형 회색 가시를 가지고 있고 혹(tubercle)이 돌출된 형태를 띠고 있다. 10개월 재배 후 ‘Ahwang’ 품종의 구직경은 44.5mm였으며 자구는 평균 26.9개가 생성되었다. ‘Ahwang’ 품종은 모구 능마다 황색의 자구가 3-4개가 착생되었다. 2016년 육성계통 평가회에서 ‘Ahwang’ 품종은 기호도 점수 3.9을 받았다. 이 품종은 2018년 5월 16일 국립종자원에 등록되었으며 식물신품종보호법에 의해 품종보호(등록번호 7193)를 받게 되었다.
        4,000원
        6.
        2018.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Phalaenopsis ‘Blanc Rouse’ 품종은 국립원예특작과학원에서 2013년도에 육성한 신품종이다. 이 품종은 2007년에 백색 바탕에 분홍색의 소형 P. ‘KV 600’ 품종을 모본으로 하고 진한 핑크색의 P. ‘Kang 1’ 품종을 부본으로 교배시킨 후대 계통 중에서 선발하였다. 2010년에 화색, 초장, 화경 및 식물체의 생육상태 등을 고려하여 1차 선발 후 2013년에 2차 특성검정을 통하여 품종의 안정성과 균일성을 확인하고 ‘Blanc Rouse’로 명명하였다. 이 품종은 흰색바탕에 자주색 순판을 가졌으며 꽃 가운데 분홍색의 줄무늬가 크게 형성되어 있는 품종이다. 화형은 꽃잎과 꽃받침이 평편한 모양이고 꽃의 길이와 폭은 4.3cm, 4.8cm로 소형이다. 꽃대가 평균 2개 발생하며 복총상 화서로 화서당 꽃 수가 39.4개로 볼륨이 있어 소형분화에 적합하다. 자연 개화시기는 11월 하순으로 개화가 빠른 조생종 이다. 잎의 길이와 폭은 각각 17.3, 6.2cm이며 엽형은 수평이다. 기내 증식력이 높고 변이가 거의 없으며 내병성이 강하여 재배관리가 용이하다.
        4,000원
        7.
        2018.04 구독 인증기관·개인회원 무료
        최근 봄철 기온이 높아짐에 따라 마늘 뿌리응애 피해가 늘어나고 있는 실정이다. 이러한 뿌리응애 피해를 최소하 하고자 발생양상과 22종의 약제에 대하여 살비효과를 조사하였다. 마늘 재배시기 중 뿌리응애의 발생은 충북 보은 등 5지역에서 2015년부터 2017년까지 3년간 3월부터 6월까지 뿌리응애 발생밀도를 조사하여 발생양상을 확인하였다. 뿌리응애는 2016년에 가장 많이 발생하였으며, 발생시기는 월동 후 3월 상순부터 발생하여 6월 중순경까지 지속적으로 밀도가 높아지는 양상을 나타내었다. 조사된 5지역 중 가장 높은 밀도로 조사된 보은지역은 6월 상순경 주당 13.3마리가 발생하였다. 뿌리응애에 대하여 우수한 살비효과를 나타낸 약제는 분무처리시 약제처리 10일 후에서 dimethoate, azocyclotin, abamectin, hexythiazox, cabosulfan, spirotetramat, benfuracarb가 90% 이상의 살비효과를 나타내었다
        9.
        2017.03 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        Programmed cell death (PCD) is decisive in eliminating affected cells in human cancers, whereas there are increasing cases of cancer-related death due to side effects of modern treatment methods. There is an urge for new methods of growth inhibition and elimination of cancer cells with a lower cytotoxicity to normal cells. Irregularity along PCD pathways plays a crucial role in cancer cell carcinogenesis. Apoptosis is a distinct cell death mechanism occurring in multicellular organisms and also called type one programmed cell death. Autophagy and paraptosis are non-apoptotic PCD occurring in multicellular organisms. Natural compounds are the fundament of pharmacological treatments, and flavonoids are natural polyphenolic compounds which are unique due to their diverse chemical structures and various biological active mechanisms like anticancer, anti-inflammatory, antioxidative and much more. This gives an increasing number of studies indicating that some flavonoids from medicinal plants could be promising candidates for new natural anticancer drugs, which attract high interests of academic researchers and advanced users. An understanding of the underlying mechanism of PCD induced by flavonoids in cancer cells is important as it plays a pivotal role in the pathogenesis of many diseases. This systematic review is to report flavonoids and their derivatives as new anticancer candidates to stimulate PCD with a different mechanism based on the pharmacological evidence.
        4,000원
        10.
        2015.12 구독 인증기관 무료, 개인회원 유료
        DNA methylation is the most common and well-characterized epigenetic change in human cancer. Recently, the association between GATA-binding protein 5 (GATA5) methylation and carcinogenesis of various types of tumors was investigated. The aim of the present study was to evaluate the effect of GATA5 methylation status on clinicopathological features and prognosis in primary non-muscle invasive bladder cancer (NMIBC) patients with a long-term follow-up period. The GATA5 methylation status was determined for 171 human bladder specimens (eight normal controls [NCs] and 163 primary NMIBC patients) using quantitative pyrosequencing analysis. The primary NMIBC tissues were obtained from patients who underwent transurethral resection (TUR) for histologically diagnosed transitional cell carcinomas between 1995 and 2012 at Chungbuk National University Hospital. GATA5 methylation was significantly higher in NMIBC patients than in NCs and was significantly associated with higher grade and more advanced stage of cancer. Kaplan-Meier estimates showed significant differences in tumor recurrence and progression according to GATA5 methylation status (each p<0.05). Our results show that increased methylation of GATA5 was significantly associated with not only aggressive characteristics but also poor prognosis in primary NMIBC patients. Alteration of GATA5 methylation might be used as a biomarker for prognosis of NMIBC patients. However, prospective and functional investigations are necessary to clarify the role of GATA5 methylation in future clinical management of patients with NMIBC.
        4,000원
        11.
        2015.06 구독 인증기관·개인회원 무료
        The present study aimed to figure out current situation and consumer perception on the advertising of functional climbing wear in Korea. Advertising is about showing consumers how products meet their needs. In case of functional clothing, the most basic need of consumer should be a functional need (Lee, 2014;Shimp, 2010). However, research on advertisement of functional clothing, especially focused on the functional information, has not carried out in Korea. Recently research by Liu and Yoo (2014) investigated changing patterns of magazine advertising of functional climbing wear from 2008 to 2013. It is found that advertisements of professional climbing wear had been changed like fashion apparel ads in terms of functional information, celebrity model dependence, and appeal type (Liu&Yoo,2014). On 2013, over 70% of functional climbing wear ads did not provide any functional information and percentage of celebrity model dependence was dramatically increased from 1.48%to35.30%. In this study, 388 adults in their 20-50’s were surveyed in order to figure out general satisfaction on advertisements of functional climbing wear. The survey consisted of eight questions including satisfaction with reliability, communicability, type of expression, model, and contents of functional climbing wear advertisement. For analysis of characteristics of respondents, years of climbing experience, frequency of climbing, average expenses per single purchase, and frequently exposed advertising media types were asked as well as demographic characteristics. Most of respondents (83.85%) were in their 30-50’s and had 3-5 years climbing experience (29.50%).Frequency of climbing was ‘once every two months’ (35.70%) and ‘1~2 times every month’ (25.26%), and the most frequent average expenses per single purchase was ‘100~300 thousand won’ (65.25%). Frequently exposed advertising media types were TV commercials (33.60%), magazine (23.10%), and internet (9.50%). Purchase frequency was ‘once every two tears’ (31.14%), ‘3~4 times in a year’ (29.11%), ‘1~2 times in a year’ (25.06%). Results showed respondents want ‘more precise information for better understanding of performance of functional climbing wears’ (4.22point out of 5.00). Significant differences in ‘advertisement of functional climbing wear is reliable’ were observed across age and gender; male rather than female group and ages 30 are than other age groups showed higher average value. Age 40’s significantly more wanted to be informed precise information via advertisement and preferred celebrity model than other age groups. Overall, ages 20-30’s were more satisfied with the advertisement of functional climbing wear than age 50’s. The results from this study could provide practical insights to establish guidelines for providing product information in the functional clothing industry.
        12.
        2015.06 구독 인증기관 무료, 개인회원 유료
        Osteoclasts originated from hematopoietic stem cells are multi-nucleated cells that can resorb the bone matrix. Receptor activator of nuclear factor kappa-B (RANK)/RANK ligand (RANKL) signaling pathway is crucial for the differentiation and activation of osteoclasts. In this study, we investigated for the first time whether or not RANKL induced mitogen- and stress-activated kinase 1 (MSK1) phosphorylation at Ser 376. Activation of MSK1 was detected as soon as 5 min after RANKL stimulation and sparsely detected at 30 min after stimulation. RANKL-induced MSK1 phosphorylation occurred in a dose-dependent manner. MSK1 is known as a downstream signaling molecule of cAMP-dependent protein kinase (PKA). Treatment with the PKA inhibitor H89 significantly suppressed c-Fos and nuclear factor of activated T-cells, cytoplasmic 1 (NFATc1) induction upon RANKL stimulation. In addition, cAMP response element-binding protein (CREB) phosphorylation was extremely inhibited by H89 treatment. Mitogen-activated protein kinases (MAPKs) have been investigated for induction of MSK1 phosphorylation. Specific signaling pathway inhibitors for p38 and extracellular signal-regulated kinases (ERKs) significantly blocked RANKL-induced MSK1 activation. Finally, as a downstream effector of the p38-MSK1 pathway, c-Fos transcriptional activity was determined. RANKL-mediated elevation of c-Fos transcriptional activity was significantly suppressed by p38 inhibitor. Moreover, a dominant negative form of CREB suppressed activation of NFATc1. In conclusion, RANKL-stimulated MSK1 phosphorylation could play a role in induction of NFATc1 through CREB and c-Fos activation as a downstream molecule of p38, ERK MAPKs, and PKA. Our results support basic information for the development of osteoclast specific inhibitors.
        4,000원
        13.
        2012.10 구독 인증기관·개인회원 무료
        Lepidopteran pests monitoring in adult stage was generally performed using delta or corn typed trap including rubber septa impregnated sex pheromone (lure). Sometimes, unfortunately trapped samples were severly damaged because of biotic and/or abiotic environments such as micro-organism, predator and rain, sticky material, respectively. In our case, we monitored potato tuber moth, PTM, Phthorimaea operculella distribution during 2009~2012 in Korea. However, we encountered unexpected problem, another species can be trapped in species specific sex pheromone trap. Therefore, species confirmation was needed in trapped samples. Here we developed confirmation method by direct PCR (without DNA extraction) or sequencing methods which trapped samples that cannot identified by morphologically. We designed multi-plex PCR universal primers and species specific primers in rRNA region because to check the success of PCR and species identification. This direct PCR method can be applied in other species confirmation which monitored using pheromone trap.
        14.
        2009.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        A taxonomic review of the genus Lagria Fabricius is presented. Two species are identified: Lagria nigricollis Hope and a new record, Lagria rufipennis Marseul. A key, description, habitus photographs of adults, and illustrations of diagnostic characteristics are provided.
        4,000원
        15.
        2009.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        A taxonomic review of a new record, Bolitophagiella pannosa (Lewis) in Korea is presented. Description of adult is presented and also we conducted laboratory and field observations of the life history and fungal hosts of the darkling beetle, Bolitophagiella pannosa (Lewis). A fungivorous tenebrionid beetle, Bolitophagiella pannosa (Lewis), was a rare inhabitant of fungi on deciduous trees (Quercus, Robinia pseudoacacia etc.) in Korea. Development from egg to adulthood took 3~10 months in nature and about 54 days in the laboratory at 25.5~26.1℃ and 63.5~64.5% relative humidity. Both larvae and adults overwintered in their host fungi or beneath the bark of the host tree near the host fungi. Sporophores of Perenniporia medulla-panis (Fr.) Donk and Perenniporia frazinea (Fr.) Ryv. were obligate feeding and breeding sites in Korea. Description, habitus photographs of adult and instar, and illustrations of diagnostic characters are provided.
        4,000원
        17.
        2009.05 구독 인증기관·개인회원 무료
        A taxonomic review of a new record, Bolitophagiella pannosa (Lewis) in Korea is presented. Description of adult is presented and also we conducted laboratory and field observations of the life history and fungal hosts of the darkling beetle, Bolitophagiella pannosa (Lewis). A fungivorous tenebrionid beetle, Bolitophagiella pannosa (Lewis), was a rare inhabitant of fungi on deciduous trees (Quercus, Robinia pseudoacacia etc.) in Korea. This species is associated with host fungi, generally order Aphyllophorales throughout its whole life. Especially both adults and larvae was inhabit on widespread fungi, Perenniporia, on deciduous trees in Korea. Apparently this species used obligately the fruiting bodies of Perenniporia medulla-panis (Fr.) Donk and Perenniporia frazinea (Fr.) Ryv. for breeding and feeding site. Development from egg to adulthood took 3-10 months in nature and about 54 days in the laboratory at 25.5-26.1℃ and 63.5-64.5% relative humidity. Both larvae and adults overwintered in their host fungi or beneath the bark of the host tree near the host fungi. Sporophores of Perenniporia medulla-panis (Fr.) Donk and Perenniporia frazinea (Fr.) Ryv. were obligate feeding and breeding sites in Korea. Description, habitus photographs of adult and instar, and illustrations of diagnostic characters are provided.
        20.
        2005.12 구독 인증기관 무료, 개인회원 유료
        Osteoclasts are multinucleated cells with bone resorbing activity and differentiated from hematopoietic cell lineages of monocyte/macrophages in the presence of receptor activator of NF-xB ligand (RANKL) and M-CSF. However, the exact molecular mechanisms through which RANKL stimulates osteoclastogenesis remain to be elucidated. Here we report that activation of cAMP-response elementbinding protein (CREB) is not involved in osteoclastogenesis from osteoclast precursors in response to RANKL. RANKL induced CREB activation in osteoclast precursors. Using pharmacological inhibitors, we found that RANKL-induced CREB activation is dependent on p38 MAPK pathways. We also found that ectopic expressions of wild type and dominant negative forms of CREB in osteoclast precursors did not affect RANKL-induced osteoclast formation and bone resorbing activity. Furthermore, dominant negative forms of CREB did not alter the expression levels of osteoclast-specific marker genes. Taken together, these data suggest that CREB is dispensable for differentiation and resorbing activity of osteoclasts.
        4,000원
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