• 대한치과의사협회지
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• 제57권3호
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• pp.149-160
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• 2019

Atrophic alveolar ridge of maxillary anterior area is commonly observed after the extraction of teeth in patients with severely compromised periodontal disease, causing difficulties with implant placement. Successful esthetics and functional implant rehabilitation rely on sufficient bone volume, adequate bone contours, and ideal implant positioning and angulation. The present case report categorized the ridge augmentation techniques using guided bone regeneration (GBR) on the maxillary anterior site by Seibert classification. Case I patient presented for implant placement in the position of tooth #11. The alveolar ridge was considered a Seibert classification I ridge defect. Simultaneous implant placement and GBR were performed. Eight months after implantation, clinical and radiological examinations were performed. Case III patient presented with discomfort due to mobility of the upper maxillary anterior site. Due to severe destruction of alveolar bone, teeth #11 and #12 were extracted. After three months, the alveolar ridge was considered a Seibert classification III ridge defect. A GBR procedure was performed; implantation was performed 6 months later. Approximately 1-year after implantation, clinical and radiological examinations were performed. During the whole treatment period, healing was uneventful without membrane exposure, severe swelling, or infection in all cases. Radiographic and clinical examinations revealed that atrophic hard tissues and buccal bone contour were restored to the acceptable levels for implant placement and esthetic restoration. In conclusion, severely resorbed alveolar ridge of the maxillary anterior area can be reconstructed with ridge augmentation using the GBR procedure so that dental implants could be successfully placed.

• Journal of Microbiology and Biotechnology
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• 제32권3호
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• pp.365-377
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• 2022

Mammalian target of rapamycin (mTOR) is a serine-threonine kinase member of the cellular phosphatidylinositol 3-kinase (PI3K) pathway, which is involved in multiple biological functions by transcriptional and translational control. mTOR is a downstream mediator in the PI3K/Akt signaling pathway and plays a critical role in cell survival. In cancer, this pathway can be activated by membrane receptors, including the HER (or ErbB) family of growth factor receptors, the insulin-like growth factor receptor, and the estrogen receptor. In the present work, we congregated an electronic network of mTORC1 built on an assembly of data using natural language processing, consisting of 470 edges (activations/interactions and/or inhibitions) and 206 nodes representing genes/proteins, using the Cytoscape 3.6.0 editor and its plugins for analysis. The experimental design included the extraction of gene expression data related to five distinct types of cancers, namely, pancreatic ductal adenocarcinoma, hepatic cirrhosis, cervical cancer, glioblastoma, and anaplastic thyroid cancer from Gene Expression Omnibus (NCBI GEO) followed by pre-processing and normalization of the data using R & Bioconductor. ExprEssence plugin was used for network condensation to identify differentially expressed genes across the gene expression samples. Gene Ontology (GO) analysis was performed to find out the over-represented GO terms in the network. In addition, pathway enrichment and functional module analysis of the protein-protein interaction (PPI) network were also conducted. Our results indicated NOTCH1, NOTCH3, FLCN, SOD1, SOD2, NF1, and TLR4 as upregulated proteins in different cancer types highlighting their role in cancer progression. The MCODE analysis identified gene clusters for each cancer type with MYC, PCNA, PARP1, IDH1, FGF10, PTEN, and CCND1 as hub genes with high connectivity. MYC for cervical cancer, IDH1 for hepatic cirrhosis, MGMT for glioblastoma and CCND1 for anaplastic thyroid cancer were identified as genes with prognostic importance using survival analysis.

• 한국수산과학회지
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• 제54권6호
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• pp.927-937
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• 2021

This study was performed to screen the antimicrobial activities of the extract from the Pacific oyster Crassostrea gigas against skin pathogens and to purify the relevant antibacterial peptide. The acidified extract showed potent antibacterial activities against gram-positive and gram-negative bacteria but showed no activity against Candida albicans and no significant cell toxicity. Among acne-causing pathogens, the acidified extract showed potent antibacterial activity only against Staphylococcus aureus, and its antibacterial activity was completely abolished by treatment with trypsin or chymotrypsin, and was inhibited by salt treatment. The acidified extract showed strong DNA-binding ability but did not show bacterial membrane permeabilizing ability. Based on antimicrobial activity screening and cytotoxic effects, a novel antibacterial peptide was purified from the acidified gill extract using solid-phase extraction, cation-exchange, and reversed-phase HPLC. The resulting peptide had a molecular weight of 4800.8 Da and showed partial sequence homology with the carbonic anhydrase 4 (CA4) protein in the hard-shelled mussel. Overall, we purified a novel antibacterial peptide, named cgCAFLP, which is related to carbonic anhydrase 4 (CA4) protein, against skin pathogens. Our results suggest that the Pacific oyster extract could be used as an additive to control some acne-related skin pathogens (S. aureus).

• Tuberculosis and Respiratory Diseases
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• 제41권3호
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• pp.215-221
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• 1994

연구배경 : 산소기가 여러 종류의 급성 폐손상에 중요한 역할을 한다는 것은 이미 잘 알려진 사실이다. 생체내에는 여러 항산화 방어기전이 존재하는데, SOD는 두 개의 superoxide radical이 과산화수소와 산소로 dismutation되는 과정을 $10^4$배 촉진시키는 효소로서 산소기에 대한 일차적인 방어기전으로 작용한다. Eukaryotic 세포내에는 두 가지 종류의 SOD가 존재하는데, 하나는 세포질에 위치하고 이중체(dimeric)의 구조를 가지며 구리와 아연을 포함하는 효소(CuZnSOD)이고, 또 하나는 미토콘드리아에 있고 사중체(tetrameric)의 구조를 갖는 망간을 포함하는 효소(MnSOD)이다. 내독소에 의한 백서의 급성 폐손상 모델에서 내독소 투여 후 시간 경과에 따른 백서 폐장의 MnSOD와 CuZnSOD의 유전자 발현을 관찰하여 이를 급성 폐손상의 양상과 비교하고자 본 연구를 시행하였다. 방법 : 백서에 E. coli의 내독소를 투여한 후 0, 1, 2, 4, 6, 12, 18, 그리고 24시간 후에 백서를 희생시켜 폐장을 얻은 후 폐장의 총 RNA를 single step phenol extraction 방법으로 추출하였다(n=3, respectively). 총 RNA를 formaldehyde를 함유한 1.2% agarose gel 에 전기영동하고, gel의 RNA를 nylon membrane으로 transfer시켰다. Nylon membrane을 $^{32}P$로 labeling시킨 MnSOD와 CuZnSOD를 probe로 하여 hybridization하고 autoradiography를 시행하였다. 결과 : 내독소률 투여하고 4시간후부터 MnSOD mRNA가 발현되기 시작하여 6시간에 최고치를 보였고, 약 12시간까지 지속되었으며, 24시간이 경과한 후에는 대조군의 수준으로 감소되었다. CuZnSOD 유전자는 내독소를 투여하고, 1 시간후부터 발현되기 시작하여 24시간까지 지속되었는데, 18시간에 최고치에 도달하였다. 결론 : 이상의 결과는 SOD가 백서에서 내독소에 의해 유발된 급성 폐손상에 대한 방어기전에 관여 할 가능성을 시사하는 것으로 생각된다.

• 한국환경과학회지
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• 제4권2호
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• pp.223-232
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• 1995

액체막의 운반체로 사용할 새로운 2개의 거대고리화합물을 합성하였다. 이들 결과들은 이 시스템을 구성하는데 있어서 이론의 응용성을 증명하여 준다. source phase의 공존이온으로서 $SCN^-$,$I^-$ 및 $Cl^-$이온을 그리고 receicing phases에서 $S_2O_3^{2-}$와 $P_2O_7^{4-}$을 이용한 액세막계로서부터 중금속 이온들에 대한 선택적 수송효율을 검토하였다. source phase의 M(II)이 $Cd(SCN)_2$$(P[SCN^-]= 0.40M)$, $Hg(SCN)_2([SCN^-]=0.40M)$, Pd(CN)$([CN^-]= 0.40M)$일때 M(II)의 수송율은 최대값을 나타낸다. 각가의 경쟁 양이온에 대한 Cd(II)이나 Pd(II)은 source phase가 00.3M-$S_2O_3^{2-}$이나 0.3M-$P_2O_7^{4-}$ 일때 가장 잘 분리된다.이 연구의 결과에서, 이 액체막계에서 효과적인 거대고리-매질수송을 하기 위해서는 두개의 규칙이 반드시 필요하다. 첫째, tiluence중으로 $M^{n+}$이온이 효과적으로 추출되고, 즉 만일 $M^{n+}$ 거대고리화합물 상호작용에 대한 logK값과 $M^{n+}$-거대고리화합물($L_1$이나 $L_2$)의 상호작용에 대한 logK값의 비가 충분히 크다면 receiving phase와 toluene의 접촉면으로부터 쉽게 중금속이온($Cd^{2+}$,$Pb^{2+}$ 및 $Hg^{2+}$)들이 떨어져 나온다. $L_1$(3,5-benzo-10,13,18,21-tetraoxa-1,7-diazabicyclo(8,5,5)eicosnan)은 $Cd^{2+}$ 과 $Pb^{2+}$ 이온과 안정한 착물을 형성한다. 그리고 $L_1$은 수용액중에서 용해하기가 매우 어렵다. 그리고 $Cd^{2+}$$L_1$나 $Pb^{2+}$$L_1$착물은 $Cd^{2+}-{(S_2O_3)}_2^{2-}$나 $Pd^{2+}-P_2O_7^{4-}$착물보다 비교적 불안정하다. 다른 한편으로 $Hg^{2+}-L_1$착물의 안정도는 $Hg^2-{2+}-(S_2O_3)_2^{2-}$이나 $Pb^{2+}-P0_2O_7^{4-}$의 그것보다 그리고 $L_2$(5,8,15,18,23,26-hexaoxa-1,12-diazabicyclo(10,8,8)octacosan)의 tuluene에 대한 분배계수는 $L_1$의 그것보다 훨씬 작다. 따라서 $Hg^{2+}$-$L_1$이나 $M^{n+}$이나 $M^{n+}-L-2(M^{2+}=Cd^{2+}, Pb^{2+}$이나 $Hg^{2+})$의 안정도수상수가 매우 큼에도 불구하고 이들 양이온의 수송량은 매우 적다.

• 한방재활의학과학회지
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• 제20권4호
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• pp.33-49
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• 2010

Objectives : This study was designed to elucidate the anti-pathogenetic and curative effects of Gyehyeoldeungbokhap-bang(Jixietengfuge-fang, GCP) on Type II collagen-induced arthritis(CIA) in mice. Methods : In experiment, twenty four mices were divided into non-treated normal group(n=6), bovine type II collagen-induced control group(n=6), collagen immunized and treated two group medicated with extract of GCP(concentration of extraction: 200 mg/kg n=6, 400 mg/kg n=6) for 4 weeks after collagen immunization, Various experimental such as arthritis, incidence, index, total cell number of spleen, total cell number of peripheral lymph node(PLN), paw joint total cell number, analysis on the percentage of immunofluorescent cells of spleen in CIA induced mice, effects of inflammatory gene expression in spleen, PLN and paw joint of CIA mice, production of cytokine(IFN-${\gamma}$, IL-4, TNF-${\alpha}$, IL-6), analysis of rheumatoid factor(anti-collagen lgG, lgM level in serum) and histopathological study on the paw joint. The arthritis index, incidence were measured a week over 4 weeks after second boosting. Total cell number of spleen, peripheral lymph node, paw joint were measure after performed experiment over 7 weeks. Concentration of cytokine and rheumatoid factor in serum were measured after experiment finished. Histopathological study on the paw joint was measured after 40 days medicated with extract of GCP. Results : 1. Incidence of arthritis and index of arthritis were significantly decreased in treated group with 400 mg/kg. 2. Total cell number of spleen, PLN and paw joint were significantly decreased in treated group. 3. Analysis on the percentage of immunofluorescent cells of spleen in CIA induced mice were significantly controled compare with control group. 4. Effects of inflammatory gene expression in spleen, PLN and paw joint of CIA induced mice were significantly controled compare with control group. 5. IFN-${\gamma}$, IL-6, TNF-${\alpha}$, concentration($pg/m{\ell}$) in serum of treated group was significantly decreased compare with control group. But IL-4 was significantly increased. 6. lgM and lgG concentration($pg/m{\ell}$) in serum of treated group was significantly decreased compare with control group. 7. Histopathologically, suppurative and destructive lesion of synovial membrane, articular cartilage and subchondral bony tissue in treated group were alleviated compare with those of control group. Conclusions : Based on the results described above, it might be consider that Gyehyeoldeungbokhap-bang(Jixietengfuge-fang, GCP) has antiarthritic and analgesic effects and also inhibitory effects on the progression of collagen-induced arthritis mice.

• 한국식품영양과학회지
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• 제10권1호
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• pp.103-106
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• 1981

전보(前報)에서 분획(分劃)한 카드뮴내성(耐性) S. aureus의 각(各) 획분중(劃分中)에 함유(含有)된 카드뮴을 원자흡광법(原子吸光法)으로 분석(分析)하여 다음과 같은 결과(結果)를 얻었다. 1. 균체(菌體) g 당(當) $690.9{\mu}g$의 카드뮴이 함유(含有)되었다. 2. 동(同) 카드뮴 중 39.9%에 상당(相當)하는 량(量)은 TCA로 용이(容易)하게 추출(抽出)되었으나 52.2%의 카드뮴은 TCA 추출(抽出) 후(後) Ethanol-Ether, Perchloric acid, Ammonia수(水)로 순차적(順次的)으로 추출(抽出)하여 추출(抽出)되지 아니하고 잔사중(殘渣中)에 잔유(殘有)하였다. 3. 균체부위별(菌體部位別)로는 원형질획분(原形質劃分)에 26.8%, 원형질막획분(原形質膜劃分)에 59.1%, 세포벽획분(細胞壁劃分)에 14.1%가 함유(含有)되었고, 4. 세포벽(細胞壁에) 함유(含有)된 카드뮴 중 90% 이상(以上)이 Lipopolyeaccharide 획분(劃分)에서 검출(檢出)되었다.

• 한국식품영양과학회지
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• 제10권1호
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• pp.85-91
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• 1981

S. aureus를 TCA로 처리(處理)하여 저분자물질(低分子物質)을 추출(抽出)한 후(後) STS법(法)에 준(準)하여 지질핵산(脂質核酸), 단백질(蛋白質) 및 잔사(殘渣)로 분획(分劃)하였다. 이와 아울러 초음파처리(超音波處理)로 균체(菌體)를 파쇄(破碎)한 후(後) 원심(遠心)침전을 SDS 및 Formamide를 사용(使用)하여 축차적(縮次的)으로 가용성(可溶性) 획분(劃分)을 추출(抽出)하고 얻어진 각(各) 획분(劃分)의 성질(性質)을 조사(調査)하였다. 그 결과(結果), 초음파(超音波)로 파쇄(破碎)한 균(菌)의 원심상징액(遠心上澄液)에서 균체(菌體) DNA의 91.3%가 검출(檢出)되었고 원심침전(遠心沈澱)으로부터는 SDS 처리(處理)에 의(依)하여 높은 비활성(比活性)(13.67unit/mg Protein)의 Malate dehydrogenase가 유지되었다. 한편, SDS 처리균(處理菌)의 원심침전물(遠心沈澱物)을 다시 열(熱) Formamide $150^{\circ}C$로 추출(抽出)하고 가용성획분(可溶性劃分) 및 잔사(殘渣)를 각각(各各) 산(酸) 가수분해(加水分解)한 후(後) Paper chromatsgraph하여 잔사(殘渣)로부터 Glucosamine을 확인(確認)하였다. 그러나 가용성획분(可溶性劃分)은 Ninhydrin반응(反應)에는 음성(陰性)이었고 환원당반응(還元糖反應)은 음성(陰性)이었다. 이상(以上)의 결과(結果)로 부터 초음파(超音波)로 파쇄(破碎)한 균체(菌體)의 원심상징액(遠心上澄液)은 주(主)로 원형질획분(原形質劃分)이며 SDS 및 Formamide에 의(依)하여 용출(溶出)되어 나온것은 각각(各各) 원형질막(原形質膜) 및 세포벽(細胞壁)의 Polysaccharide 획분(劃分)으로, Formamide 불용성분(不溶性分)은 Peptidsglycan 획분(劃分)으로 판정(判定)되었다.

• Archives of Plastic Surgery
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• 제34권6호
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• pp.679-684
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• 2007

Purpose: DMH(1,2-dimethylhydrazine) has been known to induce vascular neoplasm such as malignant endothelioma in animal experiment, through induction of abnormal proliferation of HUVECs. In our previous studies, 11 types of PKC isoenzymes were determined by RT-PCR and the expression of $PKC{\alpha}$, and ${\mu}$ was more prominent than other PKC isoenzymes in the DMH-treated group. However, this result was not based on objective assessment. In this study, we further evaluated the role of $PKC{\alpha}$ on the DMH-induced abnormal proliferation of HUVECs by two different methods to identify its presence with high relevance in objective view. $PKC{\mu}$ will be investigated in further study. Methods: The study was conducted with the cultured HUVECs group(control) and the $0.75{\times}10^{-9}M$ DMH-treated group. After processing protein extraction in 0 and 24 hour, extracted protein was treated of quantitative test through BCA protein assay. In the western blot analysis, electrophoresis was performed in the order of gel preparation, sample preparation, and gel running. Electrotransfer to nitrocellulose membrane and reaction with antibody were done. Detection of $PKC{\alpha}$ was achieved through "Gel Image Analysis System". In the fluorescence immunocytochemical analysis, the grading of radiance of the intracellular $PKC{\alpha}$ particles was detected with confocal microscope after treating with primary and fluorescent secondary antibody in 0 and 24 hours. Results: The Western blot analysis showed increased $PKC{\alpha}$ expression from the specimen obtained in 24 hour of the DMH treatment group when compared to those in control group. Under confocal fluorescence microscope, the emitting radiance in the DMH treated group was brighter at 24 hours as well. Conclusion: We believe that $PKC{\alpha}$ plays a role in DMH-induced abnormal proliferation of the vascular endothelium, which may provide insights in understanding the vascular neoplasm.

• 생명과학회지
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• 제21권5호
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• pp.746-752
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• 2011

측백나무 잎 및 열매 물, 에탄올 및 메탄올 추출물의 생리활성 물질(총 폴리페놀 화합물, 플라보노이드, 미네랄, 지방산 조성) 분석과 항산화 활성(DPPH free radical scavenging 활성, Cu/Fe-환원력, 간 조직 microsome 생체막 및 linoleic acid 과산화지질)을 측정하였다. 측백나무 잎의 메탄올 추출물에서 추출 수율(12.90%), 폴리페놀 화합물(16.02%) 및 플라보노이드(0.25%) 함량이 가장 높았다. 측백나무 잎 및 열매의 주요 미네랄은 Ca, K, 및 Mg이었다. 측백나무 잎의 주요 지방산은 palmitic acid 및 lauric acid였으며, 열매는 palmitic acid 및 decanoic acid가 높은 함량을 보였다. DPPH free radical scavenging 활성, Cu/Fe-환원력, 간 조직 microsome 생체막 및 linoleic acid의 과산화 지질 측정에 의한 항산화 활성은 측백나무 열매보다는 잎 추출물에서 높았으며, 시료 처리 농도 의존적으로 활성이 증가되는 것으로 나타났다. 이상의 실험 결과에서 측백나무 잎의 메탄올 추출물에서 높은 항산화 활성이 있었으며, 이는 폴리페놀 화합물과 플라보노이드와 같은 항산화 활성을 나타내는 생리활성 성분을 많이 함유하고 있는 것으로 나타나 향후 건강기능식품이나 화장품의 천연 항산화제 소재개발에 유용하게 사용될 것으로 사료된다.