• Journal of Periodontal and Implant Science
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• 제29권4호
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• pp.893-914
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• 1999

Tooth mobility may be the decisive factor that determines whether dental treatment of any kind is undertaken. Although tooth mobility in isolation says little in itself, the finding of increased tooth mobility is of both diagnostic and prognostic importance. Only the detection of an increase or decrease in mobility makes an evaluation possible. Thus prior to treatment, we must understand the pathologic process causing the observed the tooth mobility and decide whether the pattern and degree of observed tooth mobility is reversible or irreversible. And then it must be decided whether retention and treatment or extraction and replacement. The purpose of this study was to compare tooth mobility at different time period during root planing and flap operation and to relate changes in mobility to each treatment method. Twenty-one patients (287 teeth) with chronic adult periodontitis were treated with root planing(control group) and flap operation(experimental group), and each group was divided 3 subgroups based upon initial probing pocket depth (1-3mm, 4-6mm, 7mm and more). Tooth mobility was measured with $Periotest^{(R)}$ at the day of operation, 4 days, 1 week, 2 weeks, 3 weeks, 4 weeks, 8 weeks, 12 weeks after each treatment. Tooth mobility, attachment loss, radiographic bone loss, and bleeding on probing were measured at the day of operation, 4 weeks, 8 weeks and 12 weeks after treatment. 1. In group initial probing depth was 1-3mm, tooth mobility had no significant difference after root planing and flap operation. 2 . In group initial probing depth was 4-6mm, 7mm and more, tooth mobility had decreased in 12 weeks after root planing(p<0.01). And the mobility had increased after flap operation(p<0.01) and was at peak in 1 week, and decreased at initial level in 4 weeks, below the initial level in 12 weeks(p<0.01). 3. In 1 week, significant difference in tooth mobility between control and experimental group was found(p<0.01) but, in 12 weeks no difference between two groups was found. 4. Change of immediate tooth mobility after treatment was more larger in deep pocket than in shallow one. In group with the same probing pocket depth, the change of tooth mobility in molar group was greater than that of premolar group. 5. Tooth mobility before treatment was more strongly correlated with radiographic bone loss (r=0.5325) than probing depth, attachment loss and bleeding on probing, in 12 weeks after treatment, was more strongly correlated with attachment loss($r^2$=0.4761) than probing depth and bleeding on probing. Evaluation of the treatment effect and the prognosis after root planing and flap operation were meaningful on tooth initial probing depth 4mm and more. After flap operation, evaluation of the prognosis should be performed at least in 4 weeks and in 12 weeks after treatment, no difference in tooth mobility between two groups was observed. Radiographic bone loss and attachment loss were good clinical indicators to evaluate tooth mobility.

• 대한족부족관절학회지
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• 제22권1호
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• pp.21-25
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• 2018

Purpose: To analyze the correlation between a rupture of the hypovascular zone and early single heel raising after Achilles tendon repair. Materials and Methods: From January 2012 to August 2015, 68 patients, who underwent surgical treatment for a Achilles tendon rupture using Krackow method, were analyzed retrospectively. The patients were divided into two groups according to possibility of single heel raises within 3 months postoperatively. During the periodic outpatient observations, the visual analogue scale, Achilles tendon total rupture score (ATRS), and timing capable single heel raises were evaluated. In addition, the preoperative defect size and distance between the calcaneal osteotendinous junction and the rupture site were measured by ultrasound in all cases. Results: Twenty-three patients could perform a single heel raise within 3 months after surgery (early single heel raise group), and fortyfive patients could perform a single heel raise after 3 month postoperatively. The age, gender, body mass index, smoking, and operation delay were similar in the two groups. In addition, the defect size and distance between the calcaneal osteotendinous junction and rupture site as measured by preoperative ultrasound were similar (p=0.379 and p=0.631, respectively). On the other hand, when the rupture site was divided into the hypovascular zone (4~7 cm from calcaneal osteotendinous junction) and non-hypovascular zone, the hypovascular zone rupture rate was significantly lower in the early single heel raise group (60.9%, 14/23; 91.1%, 41/45; p=0.003). In logistic regression analysis, the odds of the hypovascular zone rupture group being capable of early single heel raise were 0.189 (p=0.017). The ATRS score at 3 months and 1 year after surgery were significantly higher in the early single heel raise group (p<0.001). Conclusion: Achilles tendon rupture at the hypovascular zone is a poor prognostic factor for early single heel raise and might affect the prognosis significantly after an Achilles tendon rupture operation.

• 한국수정란이식학회지
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• 제25권4호
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• pp.221-227
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• 2010

Early cleavage is a reliable prognostic tool for successful embryo transfer in assisted reproduction because early cleaved embryo show better pregnancy rate after transfer. There for, preparation of good embryo recipient is important factor to optimize efficiency of pig cloning. The present study was performed to evaluate the effect of early cleavage on the in vivo development of cloned embryos and to analyze breed, parity and estrous synchrony to optimize recipient for pig cloning. In vitro matured porcine oocytes derived from local slaughterhouse and fibroblasts derived from miniature pig fetuses were used for somatic cell nuclear transfer (SCNT). Reconstructed embryos were transferred to recipient pigs on the same day of SCNT or after 1~2 days of in vitro culture for selecting early cleaved embryos. Breed, parity and date of standing estrous of recipients were recorded for analysis. After 25~35 days after embryo transfer pregnancy was diagnosed using ultrasonography, and pregnant recipients were monitored till delivery. Between purebred and crossbred, no significant difference was founded in both pregnancy and delivery rates. However, early cleaved embryos showed significantly higher pregnancy (46.2%) and delivery (12.8%) rates compared to non-selectively transferred group (24.8% and 4.5%, respectively). The results also showed that the recipients showing standing estrous on the same day of SCNT and less than 4 parities were most suitable for pig cloning.

• Journal of Gastric Cancer
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• 제15권4호
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• pp.223-230
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• 2015

Purpose: The purpose of this pilot study was to evaluate the association between adenosine triphosphate-based chemotherapy response assays (ATP-CRAs) and subsets of tumor infiltrating lymphocytes (TILs) in gastric cancer. Materials and Methods: In total, 15 gastric cancer tissue samples were obtained from gastrectomies performed between February 2007 and January 2011. Chemotherapy response assays were performed on tumor cells from these samples using 11 chemotherapeutic agents, including etoposide, doxorubicin, epirubicin, mitomycin, 5-fluorouracil (5-FU), oxaliplatin, irinotecan, docetaxel, paclitaxel, methotrexate, and cisplatin. TILs in the tissue samples were evaluated using antibodies specific for CD3, CD4, CD8, Foxp3, and Granzyme B. Results: The highest cancer cell death rates were induced by etoposide (44.8%), 5-FU (43.1%), and mitomycin (39.9%). Samples from 10 patients who were treated with 5-FU were divided into 5-FU-sensitive and -insensitive groups according to median cell death rate. No difference was observed in survival between the two groups (P=0.216). Only two patients were treated with a chemotherapeutic agent determined by an ATP-CRA and there was no significant difference in overall survival compared with that of patients treated with their physician's choice of chemotherapeutic agent (P=0.105). However, a high number of CD3 TILs was a favorable prognostic factor (P=0.008). Pearson's correlation analyses showed no association between cancer cell death rates in response to chemotherapeutic agents and subsets of TILs. Conclusions: Cancer cell death rates in response to specific chemotherapeutic agents were not significantly associated with the distribution of TIL subsets.

• Tuberculosis and Respiratory Diseases
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• 제46권4호
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• pp.533-541
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• 1999

연구배경: 45세 이하의 약년자에서 발생하는 폐암은 전체 폐암의 6% 미만이지만 진행속도가 빠르고 이미 진행된 상태에서 발견되는 경우가 많아 예후가 좋지 않은 것으로 알려져 있다. 그러나 약년자 폐암의 이와 같은 원인에 대해서는 현재까지도 잘 규명되어 있지 않다. 정상적인 p53 유전자는 종양억제유전자로 작용하지만 돌연변이 등에 의한 p53 유전자 변이는 폐암의 예후에 나쁜 영향을 미친다. 저자들은 약년자 폐암이 노년자 폐암보다 예후가 나쁜 원인을 알아보고자 45세 이하의 약년자 폐암 환자와 55세 이상의 노년자 폐암환자에서 p53 유전자 변이에 의한 비정상적 p53 단백질의 발현율과 발현정도를 알아보기 위하여 이 연구를 하였다. 방 법: 1990년 1월부터 1998년 8월까지 영남의대 부속병원에서 조직생검에 의하여 폐암으로 진단된 45세 이하의 폐암 25례와 대조군으로 p53에 대한 면역조직화학염색을 실시하였던 55세 이상의 폐암환자 26례를 대상으로 비정상적 p53에 대한 발현율과 발현정도를 비교하였다. 결 과: 비정상적 p53 발현율은 약년자 폐암 25례 중 19례(76.0%), 55세 이상의 폐암 26례 중 20례(76.9%)에서 양성이었으며 양 군에서 유의한 차이는 없었다. p53 발헌정도는 45세 이하환자 19례 중 score 1이 6례, score 2가 13례였으며, 55세 이상 환자 20례 중 score 1이 4례, score 2가 16례로 두 군 사이에 의미 있는 차이가 없었다. 두 군 사이에 p53 발현율과 폐암의 조직학적 형태, 병기와도 유의한 차이가 없었다. 결 론: 45세 이하의 약년자 폐암 환자와 55세 이상의 노년자 폐암 환자에서 비정상적 p53 단백질의 발현율과 발현정도 사이는 유의한 차이가 없었다.

• 대한골관절종양학회지
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• 제13권2호
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• pp.67-74
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• 2007

목적: 골의 거대세포종양의 재발과 면역조직화학적 표지자와의 연관성을 연구하였다. 대상 및 방법: 골에서 유발된 거대세포종양 10례를 대상으로 하였다. 6명은 남자, 4명은 여자였다. 모든 환자는 수술 전 생검을 통해 확진 후 수술을 시행하였다. 방사선학적 분류는 Enneking grading system에 의하여 이루어졌다. 면역조직화학적 연구를 위해 MCM3, Ki-67 그리고 HH3 표지자가 사용되었다. 면역조직화학적 검사는 Microarray block을 사용하여 시행하였다. 결과: 10례 중 3례(30%)에서 같은 위치에서 재발되었다. 재발된 3례 중 2례는 방사선학적 단계 상 단계 2였고, 1례는 단계 1이었다. 면역조직화학적 표지자의 발현율이 방사선학적 단계 1보다 2, 3에서 증가되었다. 하지만 결과의 일관성이 없어 세포 증식율과 방사선학적 단계의 연관성은 판별하기 어렵다. 평균 MCM3 표지자의 발현율은 재발하지 않은 종양에서 11.2%, 재발한 종양에서 7.2%였다. Ki-67은 12%, 8.9% 였고, HH3는 66.9%, 75.4%였다. MCM3 와 Ki-67 표지자는 재발한 종양에서 오히려 감소된 결과를 보여 재발율과는 연관이 없을 것으로 생각된다. HH3표지자는 재발한 종양에서 증가된 소견을 보여 거대세포종양의 재발과 연관이 있음을 보여주었다. 결론: 본 연구는 면역조직화학적 표지자 중 HH3표지자가 거대세포종양의 재발 가능성을 판정하는데 기준이 될 수 있을 것으로 생각된다.

• Journal of Gastric Cancer
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• 제1권2호
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• pp.92-99
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• 2001

Purpose: E-cadherin is an adhesion molecule essential for tight connection between cells, forming the cadherin/catenin complex. Truncated $\beta$-catenin disrupts the interaction between E-cadherin and $\alpha$-catenin, leading to the loss of intercellular adhesion. Met protein, the hepatocyte growth factor receptor, plays important roles in signal transduction. We investigated the relationships between the expressions of E-cadherin, $\beta$-catenin, and c-met protein and the clinicopathological and prognostic parameters in gastric adenocarcinomas. Materials and Methods: The patterns of E-cadherin, $\beta$-catenin, and c-met protein expression were studied using immunohistochemistry in formalin-fixed, paraffin-embedded archival tissues from 76 surgically resected gastric adenocarcinomas. Results: Increased expressions of E-cadherin, $\beta$-catenin, and c-met were more significantly correlated in early gastric cancers (EGC) than in advanced gastric cancers (AGC) (P=0.002, P=0.003 and P=0.026). The positive immunoreactivities of all three markers were markedly lower in signet ring-cell type and poorly differentiated type lesions than in intestinal-type lesions. Decreased expression of the $\beta$-catenin protein correlated well with increased tumor invasion depth (P=0.039), and increased lymph node metastasis correlated well with reduced expression of c-met (P=0.046). Conclusion: In gastric cancers, reduced expressions of the E-cadherin, $\beta$-catenin, and c-met proteins may play some role in poorer tumor differentiation, deeper tumor invasion, and increased lymph node metastasis. Also, the c-met gene is thought to play a specific role in the mechanism of the yet unknown catenin action.

• Tuberculosis and Respiratory Diseases
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• 제51권6호
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• pp.550-558
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• 2001

연구배경 : 약년자 폐암 환자는 일반 폐암 환자들과는 다른 임상적 특성들이 보고되고 있으며, 생존율에 있어서도 차이가 있다는 보고가 있어왔다. 이에 저자들은 약년자 폐암 환자의 임상적 특성과 생존율 및 생존율에 미치는 인자들을 확인하고자 하였다. 방 법 : 1992년 1월부터 1998년 12월까지 원자력병원에서 원발성 폐암으로 진단된 환자 중 40세 이하의 약년자 폐암 환자 120명을 대상으로 환자의 특성 및 생존율을 분석하였다. 대조군은 같은 기간동안 폐암으로 진단된 41세 이상의 환자 중 120명을 무작위 추출하여 비교하였다. 결 과 : 약년자군에서 여성의 비율이 상대적으로 높고, 조직학적 분류상 선암이 가장 흔한 형태였으며, 비소세포암의 경우 진행된 병기(IIIB와 IV)로 진단된 경우가 많았고, 대조군에 비하여 유의하게 낮은 생존율을 보였다. 생존율에 영향을 미치는 인자로는 진행된 병기만이 유의한 독립변수로 나타났다. 결 론 : 약년자 폐암 환자들은 장노년층의 환자에 비해 진단시 진행된 병기가 많고 낮은 생존율을 보여 더 공격적이라는 것을 알 수 있었다.

• Tuberculosis and Respiratory Diseases
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• 제43권6호
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• pp.894-902
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• 1996

연구배경: Tumor angiogenesis란 종양 내에서 및 종양을 향한 새로운 혈관 증식을 말하는 것으로 암의 중식과 전이의 원인이 되며, 주로 유방암과 전립선암에서 암세포 조직 내에서의 angiogenesls와 전이의 상관관계가 보고되었으며, angiogenesls의 정도가 암의 독립적인 중요한 예후인자로 보고되었다. 본 연구는 폐암 조직에서 anglogenesls의 정도를 측정하여 예후인자로서의 가치를 평가하고자하였다. 방법: 1990년 1월 부터 1994년 12월 까지 이화여대 부속 동대문병원에서 원발성 폐암으로 진단받고 치료성적 및 생존여부를 알고 있는 비소세포폐암(non-small cell lung cancer) 환자의 기관지내시경 조직의 paraffin embedded block을 이용하여 CD31에 대한 antibody인 JC70을 사용하여 면역세포화학적 방법으로 endothelial cell을 염색하였다. 결과: 1) 전체 29예에서 microvessel의 수는 $32.7{\pm}20.8$(9-96)개 였다. 2) Microvessel의 수와 폐암의 조직학적 유형, T staging 간에는 유의한 상관관계가 없었으며, 임파선 전이 (N staging) 및 혈성 전이 (M staging) 와도 관계가 없었다(p>0.05). 3) 대상환자의 평균 추적기간은 15개월(2-46)로 microvessel의 수가 20개 이상인 군(20예)과 이하인(9예) 군으로 나누어 보았을때 1년 생존률 각각 50%, 46%, 2년 생존율 각각 30%, 0%로 유의한 차이가 없었다(p>0.05). 결론: Tumor angiogenesis는 임파선 및 원발 전이의 가능성을 시사하는 중요한 예후 예측인자일 것으로 생각되나 폐암의 기관지내시경 조직검사 조직을 이용하여서 angiogenesis의 정도를 측정하는 것은 조직이 적절하지 못하고 측정이 제한적이었으며, 아직까지는 우리나라에서 폐암에서의 angtogenesls에 관한 연구가 없는 상태로 수술조직을 이용한 더 많은 연구가 필요할 것으로 생각된다.

• Radiation Oncology Journal
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• 제36권3호
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• pp.218-226
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• 2018

Purpose: Standard treatment for locally advanced rectal cancer consists of neoadjuvant radiochemotherapy with concomitant fluoropyrimidine or oxaliplatin and surgery with curative intent. Pathological complete response has shown to be predictive for better outcome and survival; nevertheless there are no biological or genetic factors predictive for response to treatment. We explored the correlation between the single nucleotide polymorphisms (SNPs) GSTP1 (A313G) and XRCC1 (G28152A), and the pathological complete response and survival after neoadjuvant radiochemotherapy in locally advanced rectal cancer patients. Materials and Methods: Genotypes GSTP1 (A313G) and XRCC1 (G28152A) were determined by pyrosequencing technology in 80 patients affected by locally advanced rectal cancer. Results: The overall rate of pathological complete response in our study population was 18.75%. Patients homozygous AA for GSTP1 (A313G) presented a rate of pathological complete response of 26.6% as compared to 8.5% of the AG+GG population (p = 0.04). The heterozygous comparison (AA vs. AG) showed a significant difference in the rate of pathological complete response (26.6% vs. 6.8%; p = 0.034). GSTP1 AA+AG patients presented a 5- and 8-year cancer-specific survival longer than GSTP1 GG patients (87.7% and 83.3% vs. 44.4% and 44.4%, respectively) (p = 0.014). Overall survival showed only a trend toward significance in favor of the haplotypes GSTP1 AA+AG. No significant correlations were found for XRCC1 (G28152A). Conclusion: Our results suggest that GSTP1 (A313G) may predict a higher rate of pathological complete response after neoadjuvant radiochemotherapy and a better outcome, and should be considered in a more extensive analysis with the aim of personalization of radiation treatment.