• Journal of Yeungnam Medical Science
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• 제12권1호
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• pp.84-95
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• 1995

저자들은 영남대학교 의과대학 부속병원 내과에서 1985년 1월부터 1994년 5월까지 시행한 경피적 신생검 110례 중, 추적관찰이 가능한 94례(원발성 91례, 속발성 3례)를 대상으로 조직형별에 따른 임상상과 치료반응을 관찰하여 다음과 같은 결과를 얻었다. 1) 신생검 전 임상진단은 신증후군이 69례, 무증상성 요이상 20례 등이었고, 연령분포는 15세에서 30세사이가 총 52명으로 전체의 55.3%를 차지하였으며 남녀비는 1.76 : 1로 남자가 많았다. 2) 병리 조직학적소견상 원발성 신증후군은 미세변화 신증후군 41례(43.6%), 메산지움증식성 사구체신염 28례(29.8%), 막성 사구체신염 12례(12.8%), Type I 메산지움모세관성 사구체신염 4례(4.3%), 소상성분절상 경화증 3례 (3.2%), 반월상 사구체신염 3례(3.2%)였으며, 속발성은 루푸스 신염 2례(2.1%), B형 간염 연관 막증식성 신염 1례(1.1%)로 전체적으로 미세변화 신증후군이 가장 많았고, 젊은 연령층에서는 미세변화 신증후군과 메산지움증식성 사구체신염이 많았으며 50세 이상의 노인층에서는 막성 사구체신염과 소상성분절상 사구체경화증이 많았다. 3) 스테로이드 치료에 대한 효과는 치료를 시행한 86례 중 41례(47.7%)가 완전관해를, 18례(20.9%)가 부분관해를, 5례(5.8%)가 스테로이드 의존성을 보였으며, 스테로이드 의존성 5례중 4례에서 cyclosporin A를 사용하여 4례 모두에서 단백뇨의 관해를 보였고, 스테로이드에 반응이 없었던 경우는 22례(25.6)였으며, 이외에 ACE inhibitor와 항혈소판제제를 사용하였으나 현재까지 단백뇨의 관해는 볼 수 없었고, 이중 메산지움증식성 사구체신염 1례와 막성 사구체신염 1례, 반월상 사구체신염 1례, 루푸스 신염 1례 등 모두 4례에서 만성 신부전으로 진행하였다. 4) 조직형별로 치료에 대한 효과는 미세변화 신증후군이 가장 좋았으며 스테로이드 의존성을 보인 5례중 4례에서 cyclosporin A를 사용하여 4례 모두에서 단백뇨의 관해를 보였으며, 메산지움모세관성 사구체신염 4례는 스테로이드 사용없이 항혈소판제제와 ACE inhibitor 등을 사용중이며 단백뇨의 개선은 보이지 않고 있으나 현재까지 전 예에서 정상 신기능을 유지하고 있다.

• Journal of Chest Surgery
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• 제34권12호
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• pp.956-959
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• 2001

이식 후 발생하는 임파구 증식성 질환은 장기 이식의 예가 늘어나면서 증가하는 추세이며 폐 ,심장 이식과 같이 면역 억제 요법의 강도가 심할수록 그 발생률이 높아진다. 특히 임파구 증식성 질환 중 악성 임파종은 치료가 어렵고 예후가 좋지 않아 신속한 진단 및 치료가 필요하다. 본원에서는 1999년 11월 말기 폐기종으로 호흡 곤란이 심해져 가는 37세 A형 여자 환자에 0형 남자 환자의 좌측 폐를 이식하였다. 폐 이식 수술 후 면역 억제를 위해 3제 치료(싸이클로스포린, 아자씨오프런, 프레드니졸론)를 시행하였고, 환자는 이식 후 특별한 문제없이 외래 추적 관찰 중 정기적으로 시행한 가슴 컴퓨터 단층 촬영 상 이식 폐에 비정상적 종괴가 보여 2001년 2월 gun biopsy 시행 후 악성 임파종으로 진단을 받았으며 면역 억제제 감량 후 항암 화학요법 2회 시행하고 경과 관찰 중 갑자기 발생한 이식 폐부종으로 사망하였다.

• 대한핵의학회지
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• 제39권1호
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• pp.34-43
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• 2005

목적: 인체대장암 HCT15/CL02 암세포와 인체 비소세포 폐암 A549세포를 대상으로 Pgp와 MRP발현을 조사하고, 세포와 이종이식된 종양조직에서 $^{99m}Tc$-MIBI와 tetrofosmin의 섭취정도를 비교하여 이들 방사성의약품의 Pgp와 MRP 추적자로서의 성능을 알아보고자 하였다. 또한 다약제내성 극복제인 CsA 처리에 의한 두 방사성 의약품의 암세포 내섭취정도를 비교해 보았다. 재료 및 방법: Pgp의 발현은 RT-PCR과 면역조직화학 염색으로, MRP발현은 MRPrl항체에 대한 western blot analysis와 면역조직화학 염색으로 확인하였다. 세포 섭취는 $37^{\circ}C$에서 $1{\times}10^6$개/ml 농도에서 MIBI와 tetrofosmin을 30분과 60분 동안 반응시킨 후 상층액과 침전물로 분리하여 각각의 방사능을 감마계수기로 측정하여, 50 ${\mu}M$의 cyclosporin A (CsA)를 처리한 성적과 비교하였다. 체내실험은 HCT15/CL02세포와 A549세포를 이종이식 한 누드마우스를 4군으로 구분하여, MIBI와 tetrofosmin 만을 주사한 군과, CsA를 70 mg/kg으로 1시간전에 주사한 후 체내분포를 측정한 군으로 구분하였다. MIBI와 tetrofosmin은 각각 370 KBq을 정맥주사하고 10분, 60분, 240분 후에 동물들을 희생시켜 종양조직내의 두 방사성의약품의 장기섭취율(%ID/gm)로 계산하여 비교하였다. 결과: HCT15/CL02세포와 A549세포에서 MIBI와 tetrofosmin의 섭취는 배양시간이 지남에 따라 증가하였으며 그 섭취정도는 MIBI가 tetrofosmin보다 높았다. CsA 50 ${\mu}M$에 의한 MIBI와 tetrofosmin의 섭취정도를 각각의 60분 대조군과 비교하면 각각 763%와 629% 증가하여 MIBI의 섭취증가 정도가 tetrofosmin보다 높았다. 체내에서 두 방사성의약품의 섭취정도는 유사하였다. CsA 처리군의 섭취정도는 각각의 대조군에 비교하여 MIBI는 10분에 114%, 60분에 257%, 240분에 396%로 증가하였으며, tetrofosmin은 10분에 110%, 60분에 205%, 240분에 410%로 증가하였다. HCT15/ CL02 세포실험에서도 두 방사성약품의 섭취정도에 유의한 차이가 없었으나, CsA를 처리하였을 때 MIBI와 tetrofosmin의 섭취율은 기저치보다 모두 증가하였다. CsA에 의한 MIBI와 tetrofosmin의 섭취율은 기저치보다 각각 10배와 2.4배 증가하여, MIBI의 섭취율이 tetrofosmin보다 1.2배에서 4배정도 높았다. HCT15/CL02 종양조직내의 섭취는 CsA 처치시 증가하였으나 MIBI와 tetrofosmin 간에 유의한 차이는 없었다. 결론: Pgp와 MRP를 발현하여 다약제내성을 나타내는 암세포에서 MIBI와 tetrofosmin 섭취율은 유사하였으나, Pgp와 MRP를 억제하는 CsA에 의한 섭취증가정도는 MIBI가 더 높았다. 그러나 두 약제 섭취율 증가의 차이는 동물실험에서는 관찰되지 않았다. 이러한 결과로 보아 MIBI와 tetrofosmin은 Pgp와 MRP에 의한 다약제내성의 발현을 평가할 수 있는 방사성의약품으로 판단되며, 다약제내성 극복제의 시험관내 효능평가에는 MIBI가 tetrofosmin보다 더 우수할 것으로 사료되었다.

• International Journal of Oral Biology
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• 제33권4호
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• pp.205-211
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• 2008

Gingival overgrowth can cause dental occlusion and seriously interfere with mastication, speech, and dental hygiene. It is observed in 25 to 81% of renal transplant patients treated with cyclosporine A (CsA). CsA-induced gingival overgrowth (CIGO) is caused by quantitative alteration of the extracellular matrix components, particularly collagen. However, the molecular mechanisms involved in the pathogenesis of CIGO remain poorly understood, despite intense clinical and laboratory investigations. The aim of the present work is to identify differentially expressed genes closely associated with CIGO. Human gingival fibroblasts were isolated by primary explant culture of gingival tissues from five healthy subjects (HGFs) and two patients with the CIGO (CIGO-HGFs). The proliferative activity of CsA-treated HGFs and CIGO-HGFs was examined using the MTT assay. The identification of differentially expressed genes in CsA-treated CIGO-HGF was performed by differential display reverse transcriptase-polymerase chain reaction (RT-PCR) followed by DNA sequencing. CsA significantly increased the proliferation of two HGFs and two CIGO-HGFs, whereas three HGFs were not affected. Seven genes, including the beta subunit of prolyl 4-hydroxylase (P4HB) and testican 1, were upregulated by CsA in a highly proliferative CIGO-HGF. The increased P4HB and testican-1 mRNA levels were confirmed in CsA-treated CIGO-HGFs by semiquantitative RT-PCR. Furthermore, CsA increased type I collagen mRNA levels and suppressed MMP-2 mRNA levels, which are regulated by P4HB and testican-1, respectively. These results suggest that CsA may induce gingival overgrowth through the upregulation of P4HB and testican-1, resulting in the accumulation of extracellular matrix components.

• Archives of Pharmacal Research
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• 제24권2호
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• pp.126-135
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• 2001

Quinacrine (QU), a phospholipase-A2 (PLA-2) inhibitor has been used clinically as a chemotherapeutic adjuvant. To understand the mechanisms leading to its chemotherapeutic effect, we have investigated QU-induced apoptotic signaling pathways in human cervical squamous carcinoma HeLa cells. In this study, we found that QU induced cytochrome c-dependent apoptotic signaling. The release of pro-apoptotic cytochrome c was QU concentration- and time-dependent, and preceded activation of caspase-9 and -3. Flow cytometric FACScan analysis using fluorescence intensities of $DiOC_6$/ demonstrated that QU-induced cytochrome c release was independent of mitochondrial permeability transition (MPT), since the concentrations of QU that induced cytochrome c release did not alter mitochondrial membrane potential (${\blacktriangle}{\Psi}_m$). Moreover, kinetic analysis of caspase activities showed that cytochrome c release led to the activation of caspase-9 and downstream death effector caspase-3, Caspase-3 inhibitor (Ac-DEVD-CHO) partially blocked QU-induced apoptosis, suggesting the importance of caspase-3 in this apoptotic signaling mechanism. Supplementation with arachidonic acid (AA) sustained caspase-3 activation induced by QU. Using inhibitors against cellular arachidonate metabolism of lipooxygenase (Nordihydroxyguaiaretic Acid, NDGA) and cyclooxygenase (5,8,11,14-Eicosatetraynoic Acid, ETYA) demonstrated that QU-induced apoptotic signaling may be dependent on its role as a PLA-2 inhibitor. Interestingly, NDCA attenuated QU-induced cytochrome c release, caspase activity as well as apoptotic cell death. The blockade of cytochrome c release by NDCA was much more effective than that attained with cyclosporin A (CsA), a MPT inhibitor. ETYA was not effective in blocking cytochrome c release, except under very high concentrations. Caspase inhibitor z-VAD blocked the release of cytochrome c suggesting that this signaling event is caspase dependent, and caspase-8 activation may be upstream of the mitochondrial events. In summary, we report that QU induced cytochrome c-dependent apoptotic signaling cascade, which may be dependent on its role as a PLA-2 inhibitor. This apoptotic mechanism induced by QU may contribute to its known chemotherapeutic effects.

• Journal of Microbiology and Biotechnology
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• 제19권3호
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• pp.331-337
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• 2009

Interleukin-13 (IL-13) has been proposed as a therapeutic target for bronchial asthma as it plays crucial roles in the pathogenesis of the disease. We developed an in vitro test system measuring transcriptional downregulatory activities on IL-13 as a primary screening method to select drug candidates from natural products. The promoter region of IL-13 (-2,048 to +1) was cloned into the upstream of a luciferase gene in the plasmid pGL4.14 containing the hygromycin resistance gene as a selection marker, generating pGL4.14-IL-13. The EL-4 thymoma and RBL-2H3 mast cells transiently expressing this plasmid highly produced the luciferase activities by responding to PI (PMA and ionomycin) stimulation up to 8-fold and 13-fold compared with the control, respectively, whereas cyclosporin A, a well-known antiasthmatic agent, significantly downregulated the activities. The BF1 clone of RBL-2H3 cells constitutively expressing pGL4.14-IL-13 was established by selecting surviving cells under a constant lethal dose of hygromycin treatment. The feasibility of this system was evaluated by measuring the downregulatory activities of 354 natural products on the IL-13 promoter using the BF1 clone. An extract from Morus bombycis (named TBRC 156) significantly inhibited PI-induced luciferase activities and IL-13 mRNA expression, but not the protein expression. Fisetin (named TBRC 353) inhibited not only PI-induced luciferase activities and mRNA expression, but also the IL-13 protein secretion, whereas myricetin (named TBRC 354) could not suppress the IL-13 expression at all. Our data indicated that this in vitro test system is able to discriminate the effects on IL-13 expression, and furthermore, that it might be suitable as a simple and time-saving primary screening system to select antiasthmatic agents by measuring transcriptional activities of the IL-13 promoter.

• Molecules and Cells
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• 제38권12호
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• pp.1064-1070
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• 2015

Translocator protein 18 kDa (TSPO) is a mitochondrial outer membrane protein and is abundantly expressed in a variety of organ and tissues. To date, the functional role of TSPO on vascular endothelial cell activation has yet to be fully elucidated. In the present study, the phorbol 12-myristate 13-acetate (PMA, 250 nM), an activator of protein kinase C (PKC), was used to induce vascular endothelial activation. Adenoviral TSPO overexpression (10-100 MOI) inhibited PMA-induced vascular cell adhesion molecule-1 (VCAM-1) and intracellular cell adhesion molecule-1 (ICAM-1) expression in a dose dependent manner. PMA-induced VCAM-1 expressions were inhibited by Mito-TEMPO ($0.1-0.5{\mu}m$), a specific mitochondrial antioxidants, and cyclosporin A ($1-5{\mu}m$), a mitochondrial permeability transition pore inhibitor, implying on an important role of mitochondrial reactive oxygen species (ROS) on the endothelial activation. Moreover, adenoviral TSPO overexpression inhibited mitochondrial ROS production and manganese superoxide dismutase expression. On contrasts, gene silencing of TSPO with siRNA increased PMA-induced VCAM-1 expression and mitochondrial ROS production. Midazolam ($1-50{\mu}m$), TSPO ligands, inhibited PMA-induced VCAM-1 and mitochondrial ROS production in endothelial cells. These results suggest that mitochondrial TSPO can inhibit PMA-induced endothelial inflammation via suppression of VCAM-1 and mitochondrial ROS production in endothelial cells.

• 동의생리병리학회지
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• 제23권3호
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• pp.590-598
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• 2009

The purpose of this research is to evaluate the effect of Mahaenggamseok-tang-gagambang (MGTG) on airway hyper- responsiveness (AHR), immune cells, cytokines and lung tissue in OVA-induced asthmatic mice. C578L/6 mice were injected, inhaled and sprayed with OVA for 12 weeks (3times a week) for asthma sensitization and challenge. Two experimental groups were treated with different concentrations of MGTG (400 mg/kg and 200 mg/kg) extract and cyclosporin A (10 mg/kg) for the later 8 weeks. Enhanced pause (Penh) levels were measured by whole body plethysmography. Immune cells were analyzed by flow cytometer in peripheral blood monocyte cell (PBMC) and lung cells. The IL-1b, IL-12, IFN-${\gamma}$, OVA-lgE, IL-4, IL-5, TNF-${\alpha}$ were analyzed by ELISA kit in serum and splenocyte+a-cCDS/a-CD28. Enhanced pause (Penh) levels of the MGTG groups (400 mg/kg and 200 mg/kg) were decreased significantly compared with that of control group. The numbers of MGTG groups (400 mg/kg and 200 mg/kg) on lung total cells were decreased significantly compared with that of control group. The numbers of MGTG groups (400 mg/kg and 200 mg/kg) on $CD3^+/CD69^+$, $B220^+/CD22^+$, $B220^+/CD23^+$, $B220^+/lgE^+$, $CCR3^+$ cells were decreased significantly compared with that of control group. The number of MGTG group (400 mg/kg) on $CD3^+/CD49b^+$ cells was decreased significantly compared with that of control group. The level of MGTG groups (400 mg/kg and 200 mg/kg) on IL-4, IL-5, IL-12, TNF-${\alpha}$, OVA-lgE were decreased significantly compared with that of control group. The level of MGTG group (400 mg/kg) on IL-1b, IL-1S, OVA-lgE were decreased significantly compared with that of control group. These results demonstrate that MGTG could be a desirable alternative therapy for allergic asthma by inhibiting the expression of immune cells, the activation of inflammatory mediator.

• Childhood Kidney Diseases
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• 제7권2호
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• pp.204-210
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• 2003

막증식성 사구체 신염은 Berger와 Galle에 의해 처음 기술되어졌고, 전자 현미경상 고밀도로 보이는 물질들이 치밀층에 침착된 것을 특징으로 하므로, dense deposit disease라고 명명하기도 한다. 비록 원인과 병리기전에 대해서는 잘 알려져 있지 않지만, 보체의 대체경로를 활성화시켜 저보체혈증이 일어나는 임상양상으로 미루어 볼 때 이와 연관된 병의 발생기전이 보고되어 있다. 이 질환은 다른 신염에 비해 말기 신부전으로 진행하는 비율이 높아 그 중요성이 있으나 정립된 치료법이 없어 다양한 노력이 시도 중이며 그 효과에 대해서는 아직까지 논란이 있다. 저자들은 내원 3년 전부터 나타난 지속적 반복적 육안적 혈뇨와 단백뇨, 지속적인 보체 감소증이 있었으나 상실성 빈맥증(paroxysmal supraventricular tachycardia) 때문에 신조직 검사를 지연시켜오던 환아에서 2년 정도의 digoxin 복용 후 실시한 7세 여아의 조직검사에서 제 2형 막증식성 사구 체신염으로 진단된 증례를 경험하였기에 문헌 고찰과 함께 보고하는 바이다.

• 대한본초학회지
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• 제23권2호
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• pp.87-97
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• 2008

Objectives : The present study was carried out to investigate the effect of Herba Polygalae Japonica on the proliferation and activation of eosinophils which were prepared from lung cells of asthma-induced mice by ovalbumin (OVA) treatment. Methods : C57BL/6 mouse was exposed to OVA three times a week for 6 weeks. The mouse lung tissues were dissected out, chopped and dessiciated with collagenase (1 ${\mu}g$/ml). Eosinophils were activated by rIL-3/rmIL-5 co-treatments. The lung cells were treated with extract of Herba Polygalae Japonica (EPJ), incubated for 48 hr at $37^{\circ}C$, and analyzed by flow cytometer, ELISA, RT-PCR and immunocytochemistry stain. Results : A significant cytotoxicity by drug treatment was not observed. The cell number ratio of granulocyte, CD3e-/CCR3+, CD3e+CD69+, CD4+, CD23+/B220+ cells was increased in rmIL-5/rIL-3 treated control group compared to the normal group. Cells numbers in the experimental animal group treated with EPJ was all decreased. In ELISA analysis, IL-4, IL-5, IL-13 levels and histamine release level were increased in the control group compared to the normal animal group, then significantly decreased in the experimental group with 100 ${\mu}g$/ml of EPJ treatment. In RT-PCR analysis, mRNA expressions of IL-4, IL-5, IL-13, CCR3 and eotaxin were increased in the control group compared to the normal animal group, then decreased in the experimental group with 100 ${\mu}g$/ml of EPJ treatment. And eosinophil proliferation levels were 18847${\pm}$,1527 (cpm) in the control group, 4676${\pm}$972 (cpm) in the positive control group, and 7709 ${\pm}$ 549 (cpm), 16839 ${\pm}$ 1403 (cpm), 16385 ${\pm}$ 1723 (cpm) in the experimental group with 100 ${\mu}g$/ml, 10 ${\mu}g$/ml, 1 ${\mu}g$/ml of EPJ treatment. Conclusions : The present data suggested that Herba polygalae japonica may have an effects on the inhibition of parameters associated with asthma responses in eosinpophils, and thus implicate the possibility for the clinical application of EPJ.