The PHBV nonofibrous membrane fabricated by electron-spinning method for tissue engineered bone regeneration scaffold was evaulated in terms of cellular prolieration and cryopreservation efficiency. The rat calvarial periosteum derived primary cells were cultured with PHBV nanofibrous membranes and analyzed the cellular proliferation and differention fashion and cryopreservation potential by in vitro MTT assay as well as ALP staining and Alizarine red staining with or without cryopreservation for 2 weeks. The rat calvarial periosteum derived primary cells cultured with PHBV nonofibrous membrane showed favorable proliferation and alkaline phosphatase activity with numerous mineral nodule formation regardless of cryopreservation, even though its efficiency was slightly decreased in cryopreserved condition. These findings suggest that PHBV nanofibrous membrane can be applicable as an efficient cell engineered membrane for guided bone regeneration or scaffold for tissue engineered bone regeneration.

In vitro 실험을 통한 가시오가피 물 추출물 첨가가 마우스 의 면역세포 증식에 미치는 영향에 대한 연구 결과, 음의 대 조군에 비해 가시오가피 물 추출물을 첨가한 모든 농도에서 비장세포 증식능이 증가하였으며, 특히 고농도인 500~1,000 μg/ mL 농도에서 유의적으로 증가하였다. 반면, 복강 대식세 포로부터 유도된 사이토카인 생성의 경우, IL-2, IFN-γ, TNF- α 사이토카인 생성량을 측정한 결과, TNF-α 사이토카인은 가시오가피 물 추출물 50 μg/mL 농도와 250~1,000 μg/mL 농 도에서 대조군보다 유의적으로 높은 분비량을 보인 반면, IFN-γ에서는 변화를 보이지 않았다. IL-2의 경우, 100~500 μg/ mL에서 유의적으로 증가하는 경향을 보여주었다. 이상의 결 과에 의하면 가시오가피 물 추출물은 마우스 비장 세포를 증 식시키고, 사이토카인 분비량에도 영향을 줄 것으로 보이며, 면역 기관의 주요 기능을 증진시킬 가능성이 있을 것으로 사료된다. 따라서 가시오가피 물 추출물이 면역 증진 기능성식 품 개발의 소재로 활용될 가능성이 있을 것으로 기대된다

The aim of this study was to examine the ameliorating effect of black ginseng on the growth of the HepG2 cell transplanted tumor in BALB/c nude mice. 27 male BALB/c nude mice (all six weeks old) were randomly divided into three groups: the control group, the first treatment group (HepG2300RG, using 300 mg/kg red ginseng), and the second treatment group (HepG2300BG, using 300 mg/kg black ginseng). The HepG2300BG in the HePG2 cells showed increased mean survival time than that of red ginseng group. The size and volume of the tumor in the 300BG group showed significant reduction compared to those of the HepG2300RG group (p<0.05). The body weight and liver weight of the HepG2300RG group was not significantly different with control and HepG2300BG group. The serum levels of ALT and AST in the HepG2300RG and HepG2300BG group were significantly lower than those of the control group. In conclusion, these results suggest that the black ginseng may have possible anti-tumor activities.

This study was conducted to investigate the bioconversion of ginsenosides as well as anti-inflammatory activities of fresh ginseng Kkakdugi during fermentation. Fresh ginseng Kkakdugi reached proper ripeness, pH 4.30, and acidity 1.69% at 15oC after 10 days. Lactic acid bacteria grew until reaching 1.10×109 CFU/mL after 20 days of fermentation, and β- glucosidase activity increased from 1.154 to 1.885 units/g. The bioconversion of ginsenosides was confirmed based on increased content of Rg3, an aglycone, from 0.13 to 0.17 mg/g during fermentation through HPLC. Fresh ginseng Kkakdugi did not display cytotoxicity up to the concentrations of 80 μg/mL, regardless of ripening period. Nitrite production and expression of inflammation-related proteins, iNOS and COX-2, decreased in a dose-dependent manner regardless of ripening period. From these results, fresh ginseng Kkakdugi showed the bioconversion of ginsenosides to aglycone during the lactic acid fermentation as well as an anti-inflammatory effect through the reduction of NO production and iNOS and COX-2 expression

위축돈은 정상돈에 비해 생시체중이 낮고 생후 성장과 발달도 미숙하다. 근육의 성장에 있어 muscle satellite cells(SC)의 역할에 대해 많은 연구가 진행되고 있다. 근육 내에서 줄기세포를 하는 side population(SP) 세포군이 최근 밝혀졌는데, 이 세포군은 Hoechst dye를 이용한 fluorescence-activated cell sorting(FACS)에 의해 이용하여 분리되는데, 다양한 조직(특히 근육)으로 분화되는 것으로 밝혀졌다. 위축돈과 정상돈 근육 내 SC와 SP 세포군의 숫자 및 성상을 비교분석하기 위해 semitendinosus(ST) 근육을 적출하여 SC와 SP를 분리·배양 하였다. 위축돈의 ST는 정상돈에 비해 무게가 가볍고 근섬유의 숫자와 크기도 작았다(p<0.05). 하지만 정상돈과 위축돈의 ST 근육 내 단백질과 DNA 총량은 차이가 없었다. 총 RNA 양과 DNA 농도는 정상돈의 ST 근육에서 위축돈에 비해 높게(p<0.05) 나타났다. ST 근육에서 추출된 총 세포수(yield/g)에는 정상돈과 위축돈 간 차이가 없었다. 세포의 증식률을 0, 24, 48 시간동안 두 그룹 간 차이가 없었다. 세포 배양 72시간 후 정상돈 ST 근육에서 추출된 세포의 증식률이 위축돈의 그것에 비해 높게(p<0.05) 나타났다. 정상돈 ST 근육에서 위축돈 ST 근육에 비해 SP 세포가 더 많이(p<0.05) 추출되었다. 종합해 보면, 위축돈의 근육 크기와 근섬유의 숫자가 정상돈에 비해 작고, 근육내 줄기세포의 역할을 하는 SC와 SP 세포군 또한 낮게 나타난 것은 위축자돈이 임신 기간 동안 충분한 영양을 받지 못하여 근육 내 줄기세포의 증식이 낮아졌으며, 이는 근육 내 줄기세포가 자돈의 성장과 발달에 큰 영향을 미치는 결과로 해석할 수 있다.

Visfatin is a pro-inflammatory cytokine, which is thought to play a central role in systemic inflammation and the pathogenesis of obesity related diseases. Only a few studies investigated the effect of visfatin on human cancers. Furthermore, there have been no studies on the association between the expression of visfatin in OSCC tissue and its effect on OSCC patients. Hence, the present study analyzed the expression of visfatin in OSCC from Korean patients. Immunohistochemistry for visfatin was performed using 12 normal oral mucosas (NOM), 16 oral leukoplakias (with/without dysplasia), and 58 OSCC patients samples. Immunoreactivity was semi-quantitatively scored and the correlation between the expression of visfatin and clinicopathological parameters of OSCC patients was analyzed. The immunohistochemical analysis demonstrated that the expression level of visfatin increased in OSCC alone (p<0.05). Moreover, the immunoexpression score of visfatin was significantly correlated with TNM stage of OSCC patients. Our findings suggested that visfatin can play a certain role in the pathogenesis of OSCC. In addition, visfatin was associated with the tumor progression of OSCC patients and may act as independent biomarker of OSCC.

Terfenadine (TFN) was a second generation histamine receptor antagonist. Although several studies have reported the regulatory effect of H1-histamine receptor antagonists in human cancer cell lines, its effect in oral cancer remains unclear. In this study, we focused on addressing the anti-cancer activity of TFN in human oral cancer cell lines. The anti-cancer activities of TFN were performed by tryphan blue exclusion assay, 4'-6-diamidino-2-phenylindole (DAPI) staining, live/dead assay and Western blot analysis. TFN induced a significant reduction of the growth in three different human oral cancer cell lines (MC3, HSC4 and Ca9.22). TFN markedly induced apoptosis through DNA damage and increase in cytotoxicity. It also accumulated cleaved PARP and caspase 3. This process was due to cleavage of caspase 8 and Bid protein. The results from this study strongly demonstrated that the cleavages of caspase 8 and Bid are required for the apoptotic activity of TFN in human oral cancer cells. Taken together, these findings suggest TFN as a potent anticancer drug candidate for the treatment of oral cancer.

We present a case of cellular angiofibroma arising from right neck in a 46-year-old woman. Surgical excision was performed and the patient was disease free till now. Cellular angiofibroma usually arised in the inguinoscrotal of vulvovaginal regions. Only 3 cases of cellular angiofibroma involving maxillofacial region have been reported in the english written literature. Cellular angiofibromas are rare benign tumor characterized by bland spindle shaped cells arranged in a stroma with wispy collagen and numerous vessels. Immunohistochemical stains of the tumor cells showed the positivity for CD34, PR, EMA, but negativity for neurofilament, desmin and actin. The tumor should be differentiated from aggressive angiomyxoma and angiomyofibroblastoma, angiofibroma because of its clinical and histological similarity. We report a rare case of benign cellular angiofibroma involving right neck and study other published articles.

Peripheral ameloblastoma, a rare and unusual variant of odontogenic tumor, representing 1% of all ameloblastomas. The extraosseous location is the peculiar feature of this type of tumor, which is otherwise similar to the classical ameloblastoma. This paper describes a case of peripheral ameloblastoma in a 43-year-old female affecting the left retromolar pad area of the mandible which was clinically diagnosed as a pyogenic granuloma. Histologically, the tumor showed of follicular ameloblastoma in continuity with a surface oral epithelium.

As the designated name, adenocarcinoma, not otherwise specific (ANOS) revealed lack of histomorphologic characteristics that could classify the tumors under specific name. ANOS had nothing in common with other salivary gland malignancies, but glandular differentiation. The purpose of this study is to find out the solid characteristics of ANOS on the base of cytological and architectural features. 20 ANOS cases were studied. We identified 20 patients with salivary adenocarcinoma, not otherwise specified, ranging in age from 26 to 76 years (median, 53.85 years), with slight female predilection (female 11: male 9). The minor salivary gland was the most common site of tumor origin, especially on the palatal area (11 out of 20). The size of tumor was from 1.0 to 7.0(median 3.07). For the histopathological analysis, we classified the tumors by cytological and architecture patterns. Basaloid and epitheloid cytological patterns were showed with solid, microcystic/pseudocystic architecture. We found invasive growth patterns in 7 out of 20 cases. Reviewing and classifying the common features of ANOS could be helpful to make a diagnosis of malignant salivary gland tumors.

Many researchers have been reported recent trends for rising incidence particularly related to cancer of the tongue in young people. The purpose of this study is to exam the changes of OSCC(oral squamous cell carcinoma) incidence distribution. After Institutional Review Board approval, 1,345cases of OSCC were reviewed from 1993 to 2012 at the department of Oral Pathology at the University of Seoul National Dental Hospital with respect to gender, age, locations. As the results, the most prevalence ages were between 45-69 years old(mean:59.68). There is a noticeable incidence on the eighth decade of life. There are no changes of incidence distribution on se (male:female=69:31) at each year. The most common incidence area was tongue at 1993 but the mandible was the most popular site after 2001. Comparing the incidence rates of the predilection sites over and under 44 years old patients, among patients under 44 years old showed the tongue is the common site steadily. On the other hand, there is a significant increase on the mandible in the over 44 years old patients. In conclusion, this study showed similar results on overall sex distribution and median ages. The trends of locations over 20 years have been increased on the old adult’s mandible. Also, tongue is the common site for the young adults constantly. There are needs for further studies to elucidate the behind etiology. In addition, the true impact of young age on OSCC clinical behavior will remain difficult to determine unless intranational and multi-institutional databases will be combined.

본 연구는 식용 버섯의 조리방법에 따른 항산화 생리활성의 평가를 위해 수행되었으며, 산화적 스트레스에 의한 DNA 손상 감소 효과를 통해 조리방법을 달리한 버섯 추출물의 유전독성학적 방호효과를 살펴보았다. Human lymphocyte에 조리방법을 달리한 3가지 버섯(느타리, 팽이, 표고)의 추출물을 처리하고, hydrogen peroxide(H2O2)로 산화적 손상을 준 후, DNA 감소 효과를 Comet assay로 평가한 결과, 모든 시료군에서 산화적 손상에 의한 DNA 손상 감소 효과를 나타냈다. 3가지 버섯 모두 비조리군이 조리군보다 높은 효과를 나타냈는데, 이는 조리과정에 의한 페놀성 화합물의 감소로 인한 것으로 보이며, 조리군 중에서 볶기와 전이 비교적 낮은 DNA 손상 감소 효과를 나타낸 것은 조리 시 첨가되었던 대두유의 가열 산화에 의한 것으로 사료된다. 결론적으로, 조리된 버섯은 생버섯에 비해 산화적 스트레스에 의한 DNA 손상 감소효과가 낮으나, 양성 대조군과 비교하였을 때 손상을 유의적으로 감소시킨 것으로 나타났다. 또한, 본 연구에서 사용한 네 가지 조리법(굽기, 데치기, 볶기, 전) 중 DNA 손상 감소에 효과적인 조리법은 대두유를 사용하지 않은 굽기와 데치기인 것으로 판단된다.

Anthocyanins, a class of flavonoids, are natural water-soluble pigments, which are mainly found in vegetables and fruits. Anthocyanins have attractive pharmacological activities, such as anti-oxidant, anti-inflammatory, anti-cancer, and anti-diabetic. The purpose of this study was to investigate the protective effects of anthocyanins-rich fraction (ANF) from Korean purple sweet potato variety, "Shinjami", against hydrogen peroxide (H2O2)-induced oxidative stress. In our results, pre-treatment of HepG2 cells with ANF (10μg/mL) significantly prevented cell death and maintained cell integrity, following exposure to 0.9 mM hydrogen peroxide. The H2O2-dependent production of intracellular ROS was also significantly decreased by pre-treatment with ANF (6 h, 10μg/mL). In addition, ANF increased the mRNA levels of antioxidant enzymes, catalase and glutathione level in H2O2-treated HepG2 cells. These results indicated that ANF protected HepG2 cells against H2O2-induced oxidative stress by inducing protective system.

본 연구는 한국의 전통발효식초가 지닌 새로운 생물학적 기능을 규명하기 위해 국내 및 국외에서 제조된 전통발효식초로부터 다당류를 분리하여 면역자극활성을 검토하였다. 국내산 현미식초 조다당(KBV-0), 일본산 현미식초 조다당(JBV-0) 및 국내산 감식초 조다당(KPV-0)을 분리하여 구성당 분석한 결과, KBV-0와 JBV-0는 주로 mannan으로 구성되어 있으며, KPV-0는 펙틴 유래 물질로 인한 조성으로 사료되었다. 3종의 다당 시료는 RAW 264.7 세포에 독성을 나타내지 않은 반면, RAW 264.7 세포를 자극하여 IL-6, IL-12 및 TNF-α와 같은 사이토카인의 생성을 농도 의존적인 경향으로 증진시켰으나, 특히 KPV-0의 활성이 KBV-0와 JBV-0보다 더 우수하였다. 또한 KPV-0는 대식세포의 포식작용과 관련있는 FcR II의 발현량을 유일하게 증가시켰다. 이상의 결과로부터 국내산 전통발효 감식초인 KPV-0는 다른 발효식초에 비해 더 우수한 면역활성을 지니는 것으로 나타났으며, 이는 기능성 소재로의 산업적 응용이 가능할 것으로 사료되었다.

It is known that bones get damaged by accidents and aging. Since the discovery of Bioglass, various kinds of ceramics have been also found to bond to living bone; some of these ceramics are already being clinically used as bone-repairing materials. In the present study, antibacterial calcium silicate gel (Ag-30CaO·70SiO2 gel) was prepared by sol-gel method in order to control the microstructure, which is related to the dissolution rate and induction period of apatite formation in body environment. In addition, biological Ag-30CaO·70SiO2 is tested. This was done to impart antimicrobial activity to the 30CaO·70SiO2. Ag ion was added during sol-gel synthesis to replace the H2O added during the making of the 30CaO·70SiO2 gel, which has silver solutions of various concentration. After the sol-gel process, 1N-HNO3 solution was used to wash the gel when synthesizing the gel, in order to maintain the porous structure and remove PEG, water soluble polymers. Then, the apatite forming ability of the sol-gel derived CaO-SiO2 gels was investigated using simulated body fluid (SBF), which had almost the same ion concentration as that of human blood plasma. The gels were analyzed by FT-IR spectroscopy, SEM observation, XRD, and fluorescent microscopy. The apatite was successfully created even after washing the gel; apatite is present in an amorphous state, and was found to affect the concentration of the Ag ion in cells in MC3T3 live & dead assay results. From these results, it is suggested that a good material that can be used to repair defects of nature bone is Ag-30CaO·70SiO2 gel.

Dentinogenic ghost cell tumor (DGCT) is a rare neoplasm, representing 1.9% to 2.1% of all odontogenic tumors. Peripheral DGCT is a rare tumor with only 25 cases previously described in the English literature. The majority of cases have been reported to occur in the anterior part of the jaws. A rare case of peripheral DGCT is reported, located in the lingual side of the anterior mandible of a 68-year-old man. The patient presented a pedunculated painless growth of 1.5cm in diameter. Radiographically, no bone involvement was found. The lesion was excised and histologically characterized by islands of epithelial cells showing ameloblastoma-like features within fibrous background tissue. Dysplasic dentin and ghost cells with calcifications were frequently observed. Areas showing a connection between tumor cells and the overlying mucosa were also identified.

The carcinogenesis mechanism of human salivary gland adenocarcinoma NOS is poorly understood. MicroRNA155(miRNA155) has been involved in the carcinogenesis of many malignant tumors. The purpose of this study was to examine the role of miRNA155 in tumor growth and invasion of adenocarcinoma NOS. Using SGT cells as a model for adenocarcinoma NOS, cell proliferation was examined by MTT assay after knocking down miRNA155 expression, and cell cycle analysis was performed. Invasive capacity by a Transwell culture assay, and miRNA155 expression in SGT cell line by RT-PCR were examined. In MTT assay, proliferation of SGT-miRNA155 cells was decreased prominently after 96 hrs. Proliferation of SGT cells was markedly inhibited by knocking down miRNA155, resulting from a blockade of cell cycle in the G1 phase, but apoptosis was increased about 4 folds. In adhesion assay, SGT-miRNA155 cells decreased about 60% compared to SGT cells. In invasion assay, inhibition of miRNA155 significantly suppressed the invasive capacity of about 34% SGT cells. mRNA expression of SGT-miRNA155 cells prominently were decreased compared to SGT cells by RT-PCR. It suggested that miRNA155 could play an role in cell cycle progression and invasion in SGT cells, including antitumor effect. These results have provided insights into the carcinogenic mechanisms and new intervention method of salivary gland adenocarcinoma NOS.

Caffeic acid phenethyl ester (CAPE), a component of propolis, was reported to possess anti-inflammatory, anti-bacterial, anti-viral, and anti-tumor activities. Our aim was to investigate the effect of CAPE on apoptosis in cultured human mucoepidermoid carcinoma (MEC) cell line, MC-3. Apoptotic effects of CAPE were measured by cell viability assays, Western blotting, 4’-6-diamidino-2-phenylindole (DAPI) staining and Live/Dead assay. The result of cell viability assay showed that CAPE displayed a strong growth-inhibitory effect in a concentration-dependent manner against MC-3 cells. Consumption of CAPE resulted in pronounced increase in the cleavage of caspase-3 and PARP, induced nuclear condensation and fragmentation and clearly increased the number of dead cells in MC-3 cells. CAPE also caused the increase in truncated Bid (t-Bid) and the cleavage of caspase-8 and this phenomenon was regulated by death receptor 5 (DR5). In addition, Phosphorylation of AKT and ERK were downregulated by CAPE. Taken together, these results suggest that CAPE is a potent apoptosis-inducing agent in MC-3 cells.

Oral squamous cell carcinoma (OSCC), is the most common malignancy of oral cavity, and the sixth most frequently diagnosed cancer worldwide. This tumor type is associated with poor prognosis, and most OSCC patients are diagnosed after the cancer has reached an advanced stage. The over expression of NF-κB p65 has been associated with OSCC progression and lymph node metastasis. Hence, the present study analyzed the expression of NF-κB p65 in OSCC from Korean patients. Immunohistochemistry for NF-κB p65 was performed using 12 normal oral mucosas (NOM), 16 oral leukoplakia (with/without dysplasia), and 58 OSCC patients samples. Immunoreactivity was semi-quantitatively scored and the correlation between the expression of NF-κB p65 and clinicopathological parameters of OSCC patients was analyzed. Immunohistochemical staining revealed that NF-κB p65 expression level increased in oral leukoplakia with dysplasia and OSCC. Moreover, the immunoexpression of NF-κB p65 appeared to be associated with age, recurrence, TNM stage, and lymph node metastasis in OSCC patients (p<0.05). These results indicated that NF-κB p65 can play a role as oncogene in OSCC. Moreover, NF-κB p65 may play an important role in both oral carcinogenesis and OSCC patient outcome. It may be considered as another new malignant biomarker of OSCC.

국내 상수원을 대상으로 시행하고 있는 조류경보제는 남조류 발생 현황을 취 정수장 등 물관리 기관에 전파하여 대응조치를 유도하는 제도로 신속하고 정확한 남조류 계수를 필요로 한다. 따라서 조류경보제 발령 기준 대상 남조류인 Anabaena, Aphanizomenon, Microcystis, Oscillatoria 속의 군체 크기와 세포수의 상관관계를 조사하고 회귀식을 도출하여 군체 크기로 세포수를 계산할 수 있는 방법을 알아보고자 하였다. 2013년 8월부터 10월까지 남조류가 과다증식한 시기에 한강(팔당호), 낙동강(달성보, 창녕함안보) 및 금강(고복저수지)의 대표지점에서 남조류 시료를 채집하였으며, 조류경보제 발령 기준 대상 남조류 속의 종별 군체 크기와 세포수의 상관 관계를 조사하여 종 및 속별 회귀식을 산정하였다. 남조류의 속별 상관분석 결과는 사상형인 Anabaena와 Aphanizomenon의 r2값이 0.93 이상으로 높은 상관성을 보였으며 구형의 Microcystis는 0.76의 상관계수 값을 나타냈다. 종 별 상관분석 결과 사상형 남조류 Anabaena crassa, Aphanizomenon flos-aquae, A. issatschenkoi, Oscillatoria curviceps, O. mougeotii는 r2값이 0.89~0.96의 범위로 높은 상관성을 나타냈으며, 구형인 Microcystis aeruginosa, M. wessenbergii, M. viridis는 0.76~0.88의 상관계수 값을 나타냈다. 다른 속에 비해 상대적으로 Microcystis의 상관성이 낮게 나타난 이유는 동일한 종, 동일한 크기의 군체라도 Microcystis strain에 따라 점액질 내의 세포 밀집 정도와 세포 크기에 차이가 있기 때문이다. 본 연구 결과 도출한 회귀식을 이용하여 군체 크기 측정값을 세포수로 환산하는 방법이 기존의 세포 계수법과 비교할 때 신속하고 간편할 것으로 보인다. 향후 남조류 종별 더 정확한 회귀식을 도출하기 위해서는 많은 시료수 확보와 더불어 다른 종들에 대한 조사 연구가 진행되어야 할 것이다.