1.Viral Infection Regulates Fungal Pathogenicity.
Mycobiology 2001;29(2):65-72
No abstract available.
Virulence*
2.Systemic Resistance and Expression of the Pathogenesis-Related Genes Mediated by the Plant Growth-Promoting Rhizobacterium Bacillus amyloliquefaciens EXTN-1 Against Anthracnose Disease in Cucumber.
Kyungseok PARK ; Il Pyung AHN ; Choong Hoe KIM
Mycobiology 2001;29(1):48-53
Plants have the ability to acquire an enhanced level of resistance to pathogen attack after being exposed to specific biotic stimuli. To obtain plant growth-promoting rhizobacteria inducing resistance against cucumber anthracnose by Colletotrichum orbiculare, more than 800 strains of rhizobacteria were screened in the greenhouse. Among these strains, Bacillus amyloliquefaciens solate EXTN-1 showed significant disease control efficacy on the plants. Induction of pathogenesis-related(PR-la) gene expression by EXTN-1 was assessed using tobacco plants transformed with PR-1a::beta-glucuronidase (GUS) construct. GUS activities of tobacco treated with EXTN-1 and salicylic acid-treated transgenic tobacco were significantly higher than those of tobacco plants with other treatments. Gene expression analyses indicated that EXTN-1 induces the accumulation of defense-related genes of tobacco. The results showed that some defense genes are expressed by the treatment with EXTN-1 suggesting the similar resistance mechanism by salicylic acid.
Bacillus*
;
Colletotrichum
;
Gene Expression
;
Plants*
;
Salicylic Acid
;
Tobacco
4.Parathyroid Glands Location, vascular supply and preservation during a total thyroidectomy.
Suk Joon HONG ; Pyung Wha CHOI ; Young Kee SHONG ; Il Min AHN ; Gyungyub GONG ; Kun Choon PARK
Journal of the Korean Surgical Society 1999;57(6):820-827
BACKGROUND: It is well known that the inferior parathyroids are more difficult to preserved than the superior parathyroid glands because the inferior parathyroid glands have more anatomical variations. METHODS: The authors analysed the gross surgical findings of a total of 411 inferior parathyroid glands in 314 total thyroidectomy cases. The inferior parathyroid glands were grouped according to patterns based on their location and arterial blood supply. RESULTS: Type 1 (location: posterior surface of the lower thyroid pole; artery: inferior branch of the inferior thyroid artery): incidence 51% and presevation rate 62%. Type 2 (location: thyrothymic ligament or in the thymus; artery: inferior branch of the inferior thyroid artery): incidence 27% and preservation rate 86%. Type 3 (location: apart from the lower thyroid pole; artery: inferior branch of the inferior thyroid artery): incidence 6.1% and preservation rate 92%. Type 4 (location: anteriorly on the lower thyroid pole; artery: inferior branch of the inferior thyroid artery): incidence 4.1% and preservation rate 33%. Type 5 (location: lower thyroid pole; artery: comes out from the thyroid gland): incidence 4.1% and preservation rate 0%. Type 6 (location: lower thyroid pole; artery: branch of the superior thyroid artery): incidence 3.6% and preservation rate 80%. Type 7 (location: lower thyroid pole; artery: embedded in the thyroid gland): incidence 2.9% and preservation rate 36%. Type 8 (location: more superior than usual; artery: superior branch of the inferior thyroid artery): incidence 0.7% and preservation rate 67%. Type 9 (location: lower thyroid pole; artery: thyroid ima artery): incidence 0.5% and preservation rate 100%. CONCLUSIONS: The most identified inferior parathyroids belonged to the usual types, and their pre-servation rate were relatively high. However there were some unusual types though their incidence was low. Thus, accurate anatomical knowledge of variations in the location and the blood supply of the inferior parathyroids is needed to enhance the preservation rate.
Arteries
;
Incidence
;
Ligaments
;
Parathyroid Glands*
;
Thymus Gland
;
Thyroid Gland
;
Thyroidectomy*
5.B-cell Prolymphocytic Leukemia Involving Entire Female Genital Tract: A case report.
Hee Jung LEE ; Young Shin KIM ; Yong Gu KIM ; Kyung Ja HAN ; Kyo Young LEE ; Chang Suk KANG ; Sang In SHIM ; Jong Wook LEE ; Woong Shick AHN ; Soo Pyung AIM ; Seung Il KIM
Korean Journal of Pathology 1999;33(2):145-148
Prolymphocytic leukemia is a chronic lymphoproliferative disorder, characterized by prominent splenomegaly, prolymphocytes accounting for more than 55% of circulating lymphocytes, no significant peripheral lymphadenopathy and short term survival with terminal fatal multi-organ failure. We report a case of B-cell prolymphocytic leukemia in a 57-year-old woman who presented with easy bruising and arthritis for 1 year and low abdominal pain for 2 months. Physical examination revealed gingival hypertrophy and mild splenomegaly. On peripheral blood smears the leukocytes were markedly increased in number due to leukemic cells that count about 62% of leukocytes. The bone marrow aspiration smear and biopsy revealed diffuse infiltration of medium to large prolymphocytes having moderate amount of basophilic cytoplasm, round to oval nuclei with coarse chromatin, and prominent nucleoli. Abdominal pain aggravated despite chemotherapy, and pelvic computed tomography (CT) revealed a huge lobular pelvic mass which had increased in size on the follow-up CT. Total hysterectomy with bilateral adnexectomy was performed. Microscopic findings included massive infiltration of prolymphocytic cells in the uterus, upper vaginal wall, bilateral ovaries, and bilateral mesosalpinges. On immunohistochemistry, the leukemic cells showed B cell gamma light chain phenotype.
Abdominal Pain
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Arthritis
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B-Lymphocytes*
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Basophils
;
Biopsy
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Bone Marrow
;
Chromatin
;
Cytoplasm
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Drug Therapy
;
Female*
;
Follow-Up Studies
;
Gingival Hypertrophy
;
Humans
;
Hysterectomy
;
Immunohistochemistry
;
Leukemia, Prolymphocytic
;
Leukemia, Prolymphocytic, B-Cell*
;
Leukocytes
;
Lymphatic Diseases
;
Lymphocytes
;
Lymphoproliferative Disorders
;
Middle Aged
;
Ovary
;
Phenotype
;
Physical Examination
;
Splenomegaly
;
Uterus
6.Does Calcineurin Inhibitor Plus Mycophenolate Mofetil Combination Therapy Decrease the Risk of Late Acute Rejection after Liver Transplantation?.
Kwan Woo KIM ; Sung Gyu LEE ; Shin HWANG ; Ki Hun KIM ; Chul Soo AHN ; Deok Bog MOON ; Tae Yong HA ; Gi Won SONG ; Dong Hwan JUNG ; Nam Kyu CHOI ; Jeong Ik PARK ; Gil Chun PARK ; Young Dong YU ; Pyung Jae PARK ; Young Il CHOI
The Journal of the Korean Society for Transplantation 2010;24(2):93-100
BACKGROUND: With advances in immunosuppression, graft and patient survival rates have increased significantly, but acute cellular rejection remains an important problem following liver transplantation (LT), and late acute rejection (LAR) occurs in a small percentage of recipients. Some risk factors for LAR have been identified, yet the cause of LAR has not been completely investigated. The efficacy of mycophenolate mofetil (MMF) administered in combination with calcineurin inhibitor (CNI) for reduction of LAR has been demonstrated. METHODS: Between January 2006 and August 2007, adult LT recipients (n=309) were enrolled in this study. Biopsy-proven acute rejection that occurred >6 months after LT was defined as LAR. The immunosuppression regimens, CNI or CNI plus MMF, were used continuously for at least 6 months after LT. The mean follow-up period was 34.8 months (range, 25~46 months). RESULTS: LAR occurred in 17 cases (5.5%). The incidence of LAR in the CNI (n=138) or CNI plus MMF groups (n=171) was 8.6% (n=12) and 2.9% (n=5), respectively (P=0.015). Multivariate Cox regression confirmed that CNI plus MMF versus CNI therapy is associated with a decreased risk of LAR (relative risk, 0.33; P=0.04). CONCLUSIONS: The incidence of LAR in the CNI plus MMF group was significantly lower than the CNI group. Thus, continuous use of CNI plus MMF may represent a better immunosuppression regimen to decrease the rate of LAR in LT recipients.
Adult
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Calcineurin
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Follow-Up Studies
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Humans
;
Immunosuppression
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Incidence
;
Liver
;
Liver Transplantation
;
Mycophenolic Acid
;
Rejection (Psychology)
;
Risk Factors
;
Survival Rate
;
Transplants
7.The prognostic value of NT-proBNP, Troponin I, and hs-CRP in patients with acute coronary syndrome.
Pyung Chun OH ; Seung Hwan HAN ; Wook Jin CHUNG ; Woong Chol KANG ; Yiel Hea SEO ; Young Sil EOM ; Chan Il MOON ; Jeong Min BONG ; Mi Seung SHIN ; Kwang Kon KOH ; Tae Hoon AHN ; In Suck CHOI ; Eak Kyun SHIN
Korean Journal of Medicine 2009;77(2):200-210
BACKGROUND/AIMS: Elevated levels of N-terminal pro-B-type natriuretic peptide (NT-proBNP), troponin I, and high-sensitivity C-reactive protein (hs-CRP) are each associated with higher rates of death and recurrent myocardial ischemia in patients with acute coronary syndrome (ACS). We evaluated the prognostic value of NT-proBNP and a multi-marker risk approach with the simultaneous assessment of NT-proBNP, troponin I, and hs-CRP in patients with ACS. METHODS: We included 277 patients who were admitted for ACS between January and December 2006. We measured NT-proBNP, troponin I, and hs-CRP within 24 hours of the onset of symptoms. Patients were followed for a median of 559 days for cardiovascular events, including death, new myocardial infarction, heart failure, or rehospitalization for ACS. RESULTS: NT-proBNP was the most powerful predictor of clinical outcome among the biomarkers (HR 3.65, 95% CI 2.11-6.30), followed by the peak troponin I and hs-CRP (HR 2.08, 95% CI 1.12-3.87;HR 1.99, 95% CI 1.18-3.37, respectively), but not the baseline troponin I. A multi-marker risk approach with the simultaneous assessment of NT-proBNP, hs-CRP, and peak troponin I was significantly associated with cardiovascular events, especially the presence of three positive biomarkers (adjusted HR 4.20, 95% CI 1.39-12.67). CONCLUSIONS: NT-proBNP is the most powerful, independent predictor of clinical outcome among the cardiac biomarkers. Since the peak troponin I level provides more prognostic information than the baseline level, follow-up measurement of troponin I may be warranted for risk stratification. The multi-marker risk approach appears to have better prognostic performance than any marker in isolation.
Acute Coronary Syndrome
;
Biomarkers
;
C-Reactive Protein
;
Follow-Up Studies
;
Heart Failure
;
Humans
;
Myocardial Infarction
;
Myocardial Ischemia
;
Natriuretic Peptide, Brain
;
Peptide Fragments
;
Prognosis
;
Troponin
;
Troponin I
8.Effectiveness of Plasmapheresis as a Liver Support for Graft Dysfunction Following Adult Living Donor Liver Transplantation.
Shin HWANG ; Seog Woon KWON ; Gil Chun PARK ; Young Dong YU ; Kwan Woo KIM ; Nam Kyu CHOI ; Young Il CHOI ; Pyung Jae PARK ; Geum Borae PARK ; Dong Hwan JUNG ; Gi Won SONG ; Deok Bog MOON ; Chul Soo AHN ; Ki Hun KIM ; Tae Yong HA ; YuSun MIN ; Suk Kyung HONG ; Kyu Hyouck KYOUNG ; Jeong Ik PARK ; Sung Gyu LEE
The Journal of the Korean Society for Transplantation 2009;23(3):244-251
BACKGROUND: Severe graft dysfunction has been occasionally encountered following adult living donor liver transplantation (LDLT). This study intended to assess the effectiveness of plasmapheresis (PP) as a liver supportive measure in LDLT recipients showing severe graft dysfunction. METHODS: During 1 year of 2007, 276 adult LDLTs were performed in our institution. Of them 27 underwent PP therapy as a liver support. RESULTS: Seventeen underwent PP during the first month following LDLT and another 10 underwent PP after that period. The underlying causes of such liver support were acute and chronic rejections, ischemic damage, viral hepatitis recurrence and unknown causes. A total of 329 sessions of PP were performed for these 27 patients, indicating 12.2+/-9.9 times per patient for 28.1+/-32.2 days. Concurrent hemodiafiltration was done in 66.7%. Serum total bilirubin level was significantly reduced following PP therapy: 23.2+/-6.5 mg/dL before PP and 14.4+/-5.6 mg/dL at 1 week after completion of PP (P<0.001). Other biochemical parameters did not significantly affected by PP. Overall 1-year patient survival rate was 63.0%. Six-month graft survival rate after completion of PP was 82.6% in 17 patients undergoing PP during the first posttransplant month and 30% in 10 patients undergoing PP after 1 month (P= 0.013). CONCLUSIONS: The results of this study implicate that PP has a beneficial effect on the recovery of liver graft function, especially during the early posttransplant period. We suggest to perform active application of PP therapy for liver recipients showing severe graft dysfunction of total bilirubin greater than 15~20 mg/dL.
Adult
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Bilirubin
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Graft Survival
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Hemodiafiltration
;
Hepatitis
;
Humans
;
Liver
;
Liver Transplantation
;
Living Donors
;
Plasmapheresis
;
Recurrence
;
Rejection (Psychology)
;
Survival Rate
;
Transplants
9.Effect of Splenic Artery Interruption on Complete Blood Count Profiles in Living Donor Liver Transplant Recipients.
Wan Joon KIM ; Deok Bog MOON ; Jeong Ik PARK ; Shin HWANG ; Ki Hun KIM ; Chul Soo AHN ; Tae Yong HA ; Gi Won SONG ; Dong Hwan JUNG ; Kwan Woo KIM ; Nam Kyu CHOI ; Gil Chun PARK ; Young Dong YU ; Pyung Jae PARK ; Young Il CHOI ; Kun Moo CHOI ; Sung Gyu LEE
Korean Journal of Hepato-Biliary-Pancreatic Surgery 2009;13(4):242-250
PURPOSE: Splenectomy during living donor liver transplantation (LDLT) in a hepatitis C virus (HCV)-related cirrhotic recipient was performed by a Tokyo group to enhance the patient's tolerability to post-operative anti-viral treatment by improving complete blood count (CBC) profiles. At our institution, interruption of the splenic artery (SPA) by ligation or embolization in lieu of splenectomy, has been performed in LDLT to modulate portal blood flow in small-for-size graft LDLT or to prevent rupture of SPA aneurysms in recipients. We aimed to determine if interruption of the SPA can serve as an alternative management to splenectomy in LDLT recipients based on our data. METHODS: Patients were classified into the splenic artery ligation group (SAL; n=26) and splenic artery embolization group (SAE; n=19), respectively. Among the recipients without SPA interruption, age-, gender-, and severity of cirrhosis-matched 25 recipients were selected as a control group. Post-operative CBC profiles and spleen size were reviewed retrospectively and compared between the groups. RESULTS: After SAL, platelet and neutrophil counts were significantly increased at 3 and 6 months, and at 1 week and 1 month, respectively (p<0.05). After SAE, platelet and neutrophil counts were significantly increased at 3 and 6 months, and at 1 week and 3 months, respectively. There were no significant complications related to interruption of the SPA. CONCLUSION: Interruption of the SPA may have a role in improving neutrophil and platelet counts in LDLT recipients with severe pancytopenia or in whom antiviral treatment for HCV in anticipated.
Aneurysm
;
Blood Cell Count
;
Blood Platelets
;
Hepacivirus
;
Humans
;
Ligation
;
Liver
;
Liver Transplantation
;
Living Donors
;
Neutrophils
;
Pancytopenia
;
Platelet Count
;
Retrospective Studies
;
Rupture
;
Spleen
;
Splenectomy
;
Splenic Artery
;
Tokyo
;
Transplants
10.Effect of Splenic Artery Interruption on Complete Blood Count Profiles in Living Donor Liver Transplant Recipients.
Wan Joon KIM ; Deok Bog MOON ; Jeong Ik PARK ; Shin HWANG ; Ki Hun KIM ; Chul Soo AHN ; Tae Yong HA ; Gi Won SONG ; Dong Hwan JUNG ; Kwan Woo KIM ; Nam Kyu CHOI ; Gil Chun PARK ; Young Dong YU ; Pyung Jae PARK ; Young Il CHOI ; Kun Moo CHOI ; Sung Gyu LEE
Korean Journal of Hepato-Biliary-Pancreatic Surgery 2009;13(4):242-250
PURPOSE: Splenectomy during living donor liver transplantation (LDLT) in a hepatitis C virus (HCV)-related cirrhotic recipient was performed by a Tokyo group to enhance the patient's tolerability to post-operative anti-viral treatment by improving complete blood count (CBC) profiles. At our institution, interruption of the splenic artery (SPA) by ligation or embolization in lieu of splenectomy, has been performed in LDLT to modulate portal blood flow in small-for-size graft LDLT or to prevent rupture of SPA aneurysms in recipients. We aimed to determine if interruption of the SPA can serve as an alternative management to splenectomy in LDLT recipients based on our data. METHODS: Patients were classified into the splenic artery ligation group (SAL; n=26) and splenic artery embolization group (SAE; n=19), respectively. Among the recipients without SPA interruption, age-, gender-, and severity of cirrhosis-matched 25 recipients were selected as a control group. Post-operative CBC profiles and spleen size were reviewed retrospectively and compared between the groups. RESULTS: After SAL, platelet and neutrophil counts were significantly increased at 3 and 6 months, and at 1 week and 1 month, respectively (p<0.05). After SAE, platelet and neutrophil counts were significantly increased at 3 and 6 months, and at 1 week and 3 months, respectively. There were no significant complications related to interruption of the SPA. CONCLUSION: Interruption of the SPA may have a role in improving neutrophil and platelet counts in LDLT recipients with severe pancytopenia or in whom antiviral treatment for HCV in anticipated.
Aneurysm
;
Blood Cell Count
;
Blood Platelets
;
Hepacivirus
;
Humans
;
Ligation
;
Liver
;
Liver Transplantation
;
Living Donors
;
Neutrophils
;
Pancytopenia
;
Platelet Count
;
Retrospective Studies
;
Rupture
;
Spleen
;
Splenectomy
;
Splenic Artery
;
Tokyo
;
Transplants