• Journal of Gastric Cancer
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• 제13권4호
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• pp.214-225
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• 2013

Purpose: Peritoneal lavage cytology is part of the routine staging workup for patients with advanced gastric cancer. However, no quality assurance study has been conducted to show variations or biases in peritoneal lavage cytology results. The aim of this study was to demonstrate a test execution variation in peritoneal lavage cytology between investigating surgeons. Materials and Methods: A prospective cohort study was designed for determination of the positive rate of peritoneal lavage cytology using a liquid-based preparation method in patients with potentially curable advanced gastric cancer (cT2~4/N0~2/M0). One hundred thirty patients were enrolled and underwent laparotomy, peritoneal lavage cytology, and standard gastrectomy, which were performed by 3 investigating surgeons. Data were analyzed using the chi-square test and a logistic regression model. Results: The overall positive peritoneal cytology rate was 10.0%. Subgroup positive rates were 5.3% in pT1 cancer, 2.0% in pT2/3 cancer, 11.1% in pT4a cancer, and 71.4% in pT4b cancer. In univariate analysis, positive peritoneal cytology showed significant correlation with pT stage, lymphatic invasion, vascular invasion, ascites, and the investigating surgeon. We found the positive rate to be 2.1% for surgeon A, 10.2% for surgeon B, and 20.6% for surgeon C (P=0.024). Multivariate analysis identified pT stage, ascites, and the investigating surgeon to be significant risk factors for positive peritoneal cytology. Conclusions: The peritoneal lavage cytology results were significantly affected by the investigating surgeon, providing strong evidence of test execution variation that could be related to poor diagnostic accuracy and stage migration in patients with advanced gastric cancer.

• International Journal of Oral Biology
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• 제43권3호
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• pp.141-146
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• 2018

Periodontitis is generally a chronic disorder characterized by breakdown of tooth-supporting tissues, producing dentition loss. Porphyromonas gingivalis (P. gingivalis), a Gramnegative anaerobic rod, is one of the major pathogens associated with periodontitis. Neutrophils are first line defense cells in the oral cavity that play a significant role in inflammatory response. Xylitol is a known anti-caries agent and has anti-inflammatory effects. In this study, we conducted experiments to evaluate anti-inflammatory effects of xylitol on P. gingivalis infected neutrophils for possible usage in prevention and treatment of periodontal infections. P. gingivalis was intraperitoneally injected and peritoneal lavage was collected for cytokine determination. For in vitro study, neutrophils were collected from mouse peritoneal cells after zymosan injection or bone marrow cells. Neutrophils were stimulated with live P. gingivalis and ELISA was used to determine the effect of xylitol on P. gingivalis induced cytokine production. $IL-1{\beta}$, IL-6, $TNF-{\alpha}$ concentration and neutrophil population in the peritoneal lavage was increased in P. gingivalis-infected mouse. Peritoneal cells infected with live P. gingivalis revealed significantly increased production of $IL-1{\beta}$, IL-6 and $TNF-{\alpha}$ at multiplicity of infection of 10. Neutrophils from bone marrow and peritoneal lavage revealed increased production of $IL-1{\beta}$, IL-6 and $TNF-{\alpha}$. Xylitol significantly mitigated P. gingivalis induced cytokine production in neutrophils. Findings indicate that xylitol is an anti-inflammatory agent in neutrophils infected with live P. gingivalis, that suggests its use in periodontitis management.

• Journal of Gastric Cancer
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• 제8권4호
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• pp.189-197
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• 2008

목적: 진행성 위암에서 복막 세포진 검사는 복강 내 미세전이를 진단하는 유용한 방법으로 사용되고 있으나 아직까지 국내외에서 액상세포검사를 사용한 복막 세포진 검사의 의의에 대한 연구가 보고되지 않고 있다. 본 연구는 수술 중 수집된 복막 세척액을 이용한 액상세포($ThinPrep^{(R)}$) 검사의 임상적 의의를 분석하기 위해 시행되었다. 대상 및 방법: 2001년부터 2006년까지 본원에서 위암 진단하에 수술 중 위장막의 침범 또는 노출이 의심되어 복막 세포진 검사를 시행 받은 424예의 진행성 위암 환자들의 임상 병리학적 자료와 세포진 검사 결과를 후향적으로 조사하여 분석하였다. 결과: 복막 세포진 양성은 31%였으며, 복막 세포진 결과는 단변량 및 다변량 분석에서 T 병기, N 병기, P 병기와 밀접한 관계를 보였다. 3년 생존율은 복막 세포진 음성에서 68% 양성에서 26%였으며, 복막전이(P)와 복막 세포진(CY)을 기준으로 분류하였을 때 P0CY0 71%, P0CY1 39%, P1/2/3CY0 39%, 그리고 P1/2/3CY1 11%의 3년 생존율을 보였다. 그리고 단변량 및 다변량 생존분석 결과, 복막 세포진 결과가 성별, T 병기, N 병기, P 병기, 복막 외 원격 전이, 혈청 CEA와 함께 독립적인 예후 인자로 증명되었고, 또한 근치적 절제 군에서 복막 세포진 결과는 복막 재발의 위험 인자임이 밝혀졌다. 결론: 본 연구는 복막 세포진 검사가 복강 내 미세전이를 진단 할 수 있는 신뢰성 높은 진단 방법이며 진행성 위암에서 강력한 예후 인자이며 복막 재발의 위험 인자임을 증명하였다.

• Tuberculosis and Respiratory Diseases
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• 제47권4호
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• pp.451-459
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• 1999

배 경 : 패혈증에서 과도한 활성산소종의 생성은 급성 폐손상의 병리 기전에 중요한 역할을 한다. Catalase 및 MnSOD 등의 항산화 단백은 패혈증 환자의 혈청내 증가하며 급성호흡곤란증후군의 발생 예측 인자 및 패혈증의 예후 인자로 알려져 있다. Peroxiredoxin(Prx) 는 최근 독특하고 중요한 세포내 항산화 단백으로 알려져 있다. 본 연구는 대식세포인 mouse monocyte-macrophages(RAW 264.7) 세포에 산화 스트레스 및 내독소 처리후 Prx I 및 Prx II의 발현 평가하고 패혈증 동물 모델에서 복강세척액 및 기관지폐포세척액내 Prx I, Prx II 및 Trx의 양을 측정하였다. 방 법 : Prx I, Prx II 및 Trx에 대한 특이 항체를 이용하여 immunoblot 분석으로 호중구, 대식세포 및 적혈구에 이들의 분포를 평가하였다. Mouse monocyte-macrophages 세포에 $5\;{\mu}M$ menadione 및 1 mg/ml lipopolysaccharide(LPS) 을 처치하여 Prx I 및 Prx II의 발현을 평가하였으며 6 mg/Kg LPS를 복강내 투여하여 유발한 복강내 패혈증 동물의 복강세척액내 Prx I, Prx II 및 Trx의 양을 측정하였으며 복강내 패혈증 동물 및 5 mg/Kg LPS를 정맥내 투여하여 유발한 정맥내 패혈증 동물에서 기관지폐포세척액내 Prx I, Prx II 및 Trx을 측정하였으며 폐장의 염증 정도와 비교하였다. 결 과 : Prx I 및 Prx II의 분포는 호중구, 폐포대식세포 및 적혈구에서 서로 다른 양상을 보였다. Mouse monocyte-macrophages 세포에 $5\;{\mu}M$ menadione 및 $1\;{\mu}g/ml$ lipopolysaccharide을 처치하였을 때 Prx I 발현은 증가하였으나 Prx II 발현은 변화하지 않았다. 복강내 패혈증 동물에서 복강세척액내 Prx I, Prx II 및 Trx의 양은 증가하였으나 복강내 패혈증 및 정맥내 패혈증 동물에서 기관지폐포세척액내 폐장 염증 정도와 관계없이 Prx I, Prx II 및 Trx의 양은 증가하지 않았다. 결 론 : 세포내 항산화 단백으로서 mouse monocyte-macrophages 세포에서 Prx I의 발현은 산화 스트레스 및 내독소 처치후 증가한다. Prx I, Prx II 및 Trx양은 패혈증 동물 모델에서 국소 염증 부위에서 증가하나 손상된 폐장에서는 증가하지 않는다.

• Asian Pacific Journal of Cancer Prevention
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• 제14권12호
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• pp.7289-7294
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• 2013

We here document discovery of a new and simple model of tumor seeding involving the mouse peritoneum. Irradiated tumor cells administered by i.p. injection provided effective vaccination against peritoneal carcinomatosis and distal metastasis with colorectal carcinomas. In flow cytometric analysis, CD4+ and CD8+ T lymphocytes, macrophages and myeloid-derived suppressor cells (MDSCs), which are easy to obtain in the peritoneal cavity, were revealed to have significant differences between immunized and non-immunized mice and these contributed to antitumor responses. We also observed that both serum and peritoneal lavage fluid harvested from immunized mice showed the presence of CT26-specific autoantibodies. In addition, increase in level of TGF-${\beta}1$ and IL-10 in serum but a decrease of TGF-${\beta}1$ in peritoneum was found. Taken together, these findings may provide a new vaccine strategy for the prevention of peritoneal and even systemic metastasis of carcinomas through induction of an autoimmune response in the peritoneum.

• 한국임상수의학회지
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• 제33권1호
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• pp.58-61
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• 2016

An 11-year-old, intact male Cocker Spaniel dog was presented with history of abdominal distension, dyspnea for 10 days and lethargy for 1 day. Abdominal radiographs showed decreased serosal detail with abdominal distension. Abdominal ultrasounds revealed gallbladder mucocele with generalized peritonitis showing stellate-like sludge in the gallbladder with echogenic fat degeneration of cranial abdomen and abdominal free fluid containing echogenic materials. Loss of gallbladder wall integrity was shown clearly on computed tomography but ambiguously on ultrasound. Ultrasound-guided abdominocentesis was performed and showed amount of yellowish-bloody peritoneal fluid with vegetable matter and mucoid substance. On peritoneal fluid analysis, bilirubin level was elevated over three times than those of the serum. On exploratory laparotomy, gallbladder rupture and generalized bile peritonitis with intestinal adhesions were confirmed and cholecystectomy with peritoneal lavage was performed. One day after operation, patient died. This report describes delayed clinical symptoms of gallbladder rupture by gallbladder mucocele. In addition, this is the first case report using computed tomography made a diagnosis gallbladder rupture in a dog. Computed tomography might be helpful to diagnose gallbladder rupture.

• Restorative Dentistry and Endodontics
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• 제15권2호
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• pp.1-16
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• 1990

This study was to evaluate the cytotoxic effect in vitro and the tissue response within the rat peritoneal cavity to high copper amalgam and glass ionomer-silver cement, suggested for use as a retrograde endodontic filling material. In the cytotoxicity experiment, the radioactively ($^{51}Cr$) labeled L929 mouse fibroblasts were employed to determine the relative cytotoxicity of two experimental materials. Those materials were evaluated immediately after set and after one and seven days setting. In the tissue response experiment, two experimental materials were to evaluate mean peritoneal cellular count, differential cell count and the content of silver and copper in pooled packed cells and eluate samples taken by peritoneal lavage technique, and compared with surgical control after one day. two, four and six weeks of implantation. The results were as following: 1. High copper amalgam exhibited significant cytotoxicity immediately after set but showed no sign of toxicity after one day and seven days setting materials. 2. Glass ionomer-silver cement showed no sign of toxicity immediately after set and after one day and seven days setting. 3. High copper amalgam and glass ionomer-silver cement groups produce no significant difference in the mean peritoneal cell count when compared with the surgical control group after one day, two and four weeks of implantation. Surgical control group exhibited significantly a greater cell count when compared with the High copper amalgam group after six weeks. 4. High copper amalgam group increased significantly in the percentage macrophages after four and six weeks of implantation when compared with surgical control group. 5. The trace metal analysis involved an increased silver content in the elutes and an increased copper content in the packed cells of high copper amalgam group, and an increased silver content in the packed cells and elutes of glass ionomer-silver cement group.

• Environmental Analysis Health and Toxicology
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• 제10권3_4호
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• pp.29-40
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• 1995

To investigate and evaluate the scavenging and antioxidative effects of various ftavonoids on paraquat induced pulmonary toxicity, in vivo and vitro tests of eight flavonoids(catechin, epicatechin, flayone, chrysin, apigenin, quercetin, morin and biochanin A) were carried out. In vitro test, inhibitory and antioxidative effects of lipoxygenase dependent lipidperoxidation, NADPH dependent cytochrome p-450 reductase to liver and lung microsome and superoxide anion production in rat peritoneal exudated macrophage were studied. In vivo test, biochemical parameters and cell population in bronchoalveolar lavage fluid(BALF) in mouse and rats after administration of paraquat and flavonoids were tested. The results are summerized as follows; 1. All flavonoids tested inhibited on NADPH dependent cytochrome p-450 reductase in liver and lung microsome. 2. All flavonoids tested showed the inhibitory effects on the superoxide anion production in rat peritoneal exudated macropharge. 3. Lactate dehydrogenase, acid phosphatase and total protein in BALF of mouse which increased by the administration of paraquat, decreased significantly by catechin, chrysin, morin and biochanin A. 4. Numbers of alveolar macropharge and PMN in BALF of rats which increased by the administration of paraquat decreased by all the tested flavonoids. Therefore, all flavonoids tested showed the useful compounds for scavenger and antioxidant on paraquat induced pulmonary toxicity.

• Korean Journal of Acupuncture
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• 제26권3호
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• pp.55-68
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• 2009

Objectives : To investigate the anti-inflammatory effects of Scutellaria baicalensis Georgi pharmacopuncture in lipopolysaccharide (LPS)-induced inflammatory rat model. Methods : Sprague-Dawley rats were divided into 4 groups; LPS control (n=6), LPS+Scutellaria baicalensis Georgi pharmacopuncture at BL23 (n=6, BL23), LPS+Scutellaria baicalensis Georgi pharmacopuncture at CV12 (n=6, CV12), and LPS+Scutellaria baicalensis Georgi pharmacopuncture at GV4 (n=6, GV4). Pharmacopuncture was given every two days for 4 weeks followed by inflammation induction by intraperitoneal LPS injection (5mg/kg). Blood, liver tissue, and peritoneal lavage fluid were taken and proinflammatory cytokines and other related factors were analysed. Results : For proinflammatory cytokines, CV12 pharmacopuncture group was significantly different compared with the control group in plasma IL-$1{\beta}$, IL-6, TNF-$\alpha$, and IL-10 5 h after LPS injection (P<0.05). For plasma IL-$1{\beta}$ and IL-6, CV12 pharmacopuncture group also showed significant difference at 2 h compared with the control (P<0.05). GV4 pharmacopuncture group was significantly different compared with the control at 5 h in plasma IL-$1{\beta}$, IL-6, and TNF-$\alpha$ and at 2 h in IL-10 (P<0.05). Liver cytokines were analyzed at 5 h after LPS injection; only CV12 pharmacopuncture group showed significant difference in IL-$1{\beta}$ (P<0.05) and others including IL-6, TNF-$\alpha$, and IL-10 had no difference compared with the control group. CD4/CD8 ratio and the phagocytic activities of polymorphonuclear neutrophils were not different from those of control group in all pharmacopuncture groups (P>0.05). Plasma NO3-/NO2- and intracellular adhesion molecule-1 of CV12 pharmacopuncture group were significantly lower than that of the control group (P<0.05). In the plasma concentration of prostaglandin E2, all 3 pharmacopuncture groups had significantly lower values than that of the control group (P<0.05), but there was no difference among pharmacopucnture groups. Monocyte chemoattractant protein-1 and cytokine-induced neutorphil chemoattractant-1 in peritoneal lavage fluid was significantly decreased in CV12 pharmacopuncture group compared with the control group (P<0.05). Conclusions : These results indicate that Scutellaria baicalensis Georgi pharmacopuncture at CV12 may have a potent anti-inflammatory effect in an LPS-induced inflammatory rat model.

• 생명과학회지
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• 제23권6호
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• pp.779-788
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• 2013

본 연구는 5주간의 고지방 식이(45% 지방)가 복강 대식세포의 면역 반응에 미치는 효과를 분석하였다. C57BL/6 마우스(4주령, N=16)를 2집단으로 나누어 고지방 식이집단(HD, N=8)은 45% 지방 함량 고지방식이를 정상 식이집단(ND, N=8)은 정상식이(10% 지방)를 5주간 실시하였다. 복강 대식세포는 복강세척법을 이용하여 획득하였으며, LPS (lipopolysaccharide, $1{\mu}g/ml$, 24시간)를 이용하여 배양하였다. 체중은 고지방식이 후 유의하게 증가하였으며, LPS 처치 후 HD그룹의 산화질소, IL-$1{\beta}$ 및 IFN-${\gamma}$ 생성량은 ND그룹에 비하여 유의하게 낮았다. 그러나 두 집단에서 TNF-${\alpha}$와 IL-12의 생성량은 유의한 변화가 없었다. 이러한 결과는 비만 시 대식세포의 식균작용, 산화질소, IL-$1{\beta}$ 및 IFN-${\gamma}$ 생성량이 낮아짐에 따라 면역반응과 항원자극 감수성이 저하되는 것으로 사료된다.