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Min YJ, Cha SJ, Lee HS, Baek JH, Park MJ, Kim H, Park JH, Park KU, Won JH. Abstract 2513: Arsenic trioxide induces depolymerization of microtubules in an acute promyelocytic leukemia cell line. Cancer Res 2010. [DOI: 10.1158/1538-7445.am10-2513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Arsenic trioxide (ATO) treatment has been used in recent decades to achieve clinical remission in patients with acute promyelocytic leukemia (APL). The biological basis for ATO treatment has been explained as being mediated through anti-proliferation, anti-angiogenesis, and apoptosis in both APL and solid tumor cells. Arsenic trioxide has been shown to affect microtubules such that dysfunction of the cellular cytoskeleton is induced, which ultimately leads to cell death. In this study, we reported that ATO disrupts tubulin assembly and results in microtubule dysfunction, inducing cell death in an APL cell line. ATO markedly enhanced the depolymerization of microtubules. Analysis of posttranslational modifications of microtubules also revealed that ATO decreased modified forms of the polymerized tubulin portion in adose-dependent manner. Immunocytochemical investigation showed that ATO changed the cellular microtubule network and inhibited the formation of polymerized microtubules. These alterations in microtubules suggest that ATO increases the depolymerized form of tubulin in the cells, potentially through its effect on the attenuation of spindle dynamics.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 101st Annual Meeting of the American Association for Cancer Research; 2010 Apr 17-21; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2010;70(8 Suppl):Abstract nr 2513.
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Kim SH, Song J, Mun H, Park KU. Effect of the combined use of tramadol and milnacipran on pain threshold in an animal model of fibromyalgia. Korean J Intern Med 2009; 24:139-42. [PMID: 19543493 PMCID: PMC2698623 DOI: 10.3904/kjim.2009.24.2.139] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2008] [Accepted: 01/29/2009] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND/AIMS Acidic saline injections produce mechanical hyperresponsiveness in male Sprague-Dawley rats. We investigated the effect of milnacipran in conjunction with tramadol on the pain threshold in an acidic saline animal model of pain. METHODS The left gastrocnemius muscle of 20 male rats was injected with 100 microL of saline at pH 4.0 under brief isoflurane anesthesia on days 0 and 5. Rats administered acidic saline injections were separated into four study subgroups. After determining the pre-drug pain threshold, rats were injected intraperitoneally with one of the following regimens; saline, milnacipran alone (60 mg/kg), milnacipran (40 mg/kg) plus tramadol (20 mg/kg), or milnacipran (40 mg/kg) plus tramadol (40 mg/kg). Paw withdrawal in response to pressure was measured at 30 min, 120 min, and 5 days after injection. Nociceptive thresholds, expressed in grams, were measured with a Dynamic Plantar Aesthesiometer (Ugo Basile, Italy) by applying increasing pressure to the right or left hind paw until the rat withdrew the paw. RESULTS A potent antihyperalgesic effect was observed when tramadol and milnacipran were used in combination (injected paw, p=0.001; contralateral paw, p=0.012). This finding was observed only at 30 min after the combination treatment. CONCLUSIONS We observed potentiation of the antihyperalgesic effect when milnacipran and tramadol were administered in combination in an animal model of fibromyalgia. Further research is required to determine the efficacy of various combination treatments in fibromyalgia in humans.
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Hong KH, Kim MJ, Lee KW, Park KU, Kim HS, Song J. Platelet count evaluation using three automated haematology analysers compared with the immunoplatelet reference method, and estimation of possible inadequate platelet transfusion. Int J Lab Hematol 2008; 31:298-306. [PMID: 18294237 DOI: 10.1111/j.1751-553x.2008.01032.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The accuracy of three automated haematology analysers [Sysmex XE-2100 (both optical and impedance mode), Bayer Advia 120, and Beckman Coulter LH-750] was compared with the immunoplatelet reference method for platelet measurement. A total of 165 blood specimens were obtained from patients and platelet counts were determined using the four-automated haematology analyser methods and the immunoplatelet reference method. The coefficients of determination (R(2)) between the automated haematology analyser methods and the immunoplatelet reference method for the overall platelet range were >0.98. A bias study, however, showed some disagreement. The use of a coincidence correction calculation for the immunoplatelet method did not improve the correlation between the immunoplatelet method and the automated haematology analyser methods. To estimate the possibility of inadequate platelet transfusion, the number of prophylactic platelet transfusion indications determined by the automated haematology analyser platelet counts were compared with the number of transfusion indications according to the platelet counts determined by the immunoplatelet method. An additional 48 blood specimens were included in this analysis. All of the automated haematology analysers showed some disagreement in the transfusion indications when compared with the immunoplatelet method, suggesting the possibility of inadequate platelet transfusion.
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Kim MK, Lee JL, Hyun MS, Do YR, Song HS, Kim JG, Bae SH, Ryoo HM, Park KU, Lee KH. Palliative chemotherapy preferences and factors that influence patient choice in incurable advanced cancer. Jpn J Clin Oncol 2008; 38:64-70. [PMID: 18238880 DOI: 10.1093/jjco/hym147] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE To determine the extent of informed decision-making and treatment preference of Korean patients receiving palliative chemotherapy. METHODS We assessed 138 patients (median age: 58 years; 73% male) with advanced cancer who had received at least one cycle of chemotherapy. General demographic information, the extent of information received, patient preferences for palliative chemotherapy and randomized trials were determined using structured patient interviews. We investigated the survival threshold for justifying toxicity, the factors influencing individual preference for chemotherapy and the attitude of patients towards randomized trials. RESULTS Before chemotherapy, 72.1% of patients were given information about adverse events of treatment, but only 39.5% were told of alternative treatments. There was significant inter-individual variability in willingness to accept chemotherapy, as well as a wide range of thresholds. Patients reporting higher quality of life were more likely to judge treatment as acceptable. When given the choice for randomization for conventional chemotherapy, investigational agents or supportive care, patients usually refused enrollment into randomized trials. CONCLUSION Self-assessed quality of life was a significant predictor of stronger preference for chemotherapy. In the palliative setting, good doctor-patient communications and consideration of patients' preferences are necessary for making decisions about proper treatment.
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Bae SH, Ryoo HM, Do YR, Song HS, Kwon KY, Kim MK, Lee KH, Hyun MS, Lee WS, Hur IK, Baek JH, Park KU. A phase II study of biweekly irinotecan and cisplatin for patients with extensive stage disease small cell lung cancer. Lung Cancer 2008; 59:76-80. [PMID: 17767977 DOI: 10.1016/j.lungcan.2007.07.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2007] [Revised: 07/16/2007] [Accepted: 07/23/2007] [Indexed: 11/25/2022]
Abstract
BACKGROUND An irinotecan and cisplatin (IP) combination is one of active regimen used in treatment of extensive stage disease (ED) small cell lung cancer (SCLC). However, a 4-week cycle of irinotecan treatment can result in significant myelosuppression and diarrhea. Therefore, the present study was conducted to evaluate the efficacy and safety of biweekly IP in patients with ED SCLC. METHODS Patients with previously untreated ED SCLC received intravenous irinotecan at a dose of 60mg/m(2) and cisplatin at a dose of 30mg/m(2) on days 1 and 15 every 4 weeks. RESULTS Thirty-five patients were enrolled in this study. Three complete responses and 23 partial responses were confirmed, giving an overall response rate of 74.3%. After a median follow-up of 15.1 months, the median time to progression and overall survival were 7.7 months and 12.2 months, respectively. Grade 3/4 neutropenia occurred in seven patients and grade 3 febrile neutropenia was observed in one patient. Grade 3 diarrhea occurred in two patients. CONCLUSIONS The combination chemotherapy of biweekly IP was found to be well tolerated and effective in patients with ED SCLC. Further evaluation of the combination of IP at the dose and schedule in this study is warranted in ED SCLC patients.
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Park KU. Assessment of Change of Quality of Life in Terminally Ill Patients under Cancer Pain Management Using the EORTC Core Quality of Life Questionnaire (QLQ-C30) in a Korean Sample. Oncology 2008; 74 Suppl 1:7-12. [DOI: 10.1159/000143212] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Um SW, Lee SW, Kwon SY, Yoon HI, Park KU, Song J, Lee CT, Lee JH. Low serum concentrations of anti-tuberculosis drugs and determinants of their serum levels. Int J Tuberc Lung Dis 2007; 11:972-8. [PMID: 17705974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023] Open
Abstract
SETTING Low serum concentrations of anti-tuberculosis drugs have occasionally been associated with treatment failure. OBJECTIVE To determine the prevalence of low serum concentrations of anti-tuberculosis drugs and to identify the determinants of drug concentrations. DESIGN Venous blood was obtained 2 h after drug ingestion, and serum levels of isoniazid (INH), rifampicin (RMP), ethambutol (EMB), pyrazinamide (PZA), acetyl INH and 25-desacetyl RMP were analysed using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Patients with human immunodeficiency virus co-infection and gastrointestinal disease or diarrhoea were excluded. RESULTS Among 69 enrolled TB patients, the prevalence of a low 2 h serum concentration of at least one anti-tuberculosis drug was 46.4%. Prevalences of a low concentration of INH, RMP, EMB or PZA were 15.2%, 23.5%, 22.4% and 4.5%, respectively. By multivariate linear regression analysis, the serum concentrations of INH, RMP and PZA were positively associated with dose per kg of body weight (P < 0.05). Moreover, INH concentration was associated with acetyl INH/INH ratio (beta = -8.588, P < 0.001) and EMB concentration was associated with calculated creatinine clearance (beta = -0.025, P < 0.001). CONCLUSION Low concentrations of anti-tuberculosis drugs are common, and although the clinical significance of low concentrations remains uncertain, it may be necessary to optimise drug doses by therapeutic drug monitoring, especially in patients with an inadequate clinical response to chemotherapy.
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Kim JG, Sohn SK, Song HS, Kwon KY, Do YR, Lee KH, Hyun MS, Ryoo HM, Bae SH, Park KU, Baek JH, Lee WS, Chung JS, Cho GJ, Sohn CH, Jang JS, Chung HY, Yu W. Multicenter phase II study of weekly paclitaxel plus cisplatin combination chemotherapy in patients with advanced gastric cancer. Cancer Chemother Pharmacol 2007; 60:863-9. [PMID: 17333192 DOI: 10.1007/s00280-007-0433-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2006] [Accepted: 02/01/2007] [Indexed: 11/25/2022]
Abstract
PURPOSE Since a weekly administration of paclitaxel has demonstrated a sustained efficacy and more favorable toxicity profile than a 3-weekly administration for various solid tumors, the present study was conducted to evaluate the efficacy and safety of a combination regimen of weekly paclitaxel plus cisplatin in patients with advanced gastric cancer. PATIENTS AND METHODS Patients with previously untreated metastatic or recurrent, measurable gastric cancer received intravenous paclitaxel 100 mg/m(2) plus cisplatin 35 mg/m(2) on days 1 and 8 based on a 3-week cycle. RESULTS Fifty-two patients were enrolled in the current study. Two complete responses and 17 partial responses were confirmed, giving an overall response rate of 36.5%. At a median follow-up of 8.5 months, the median time to progression and median overall survival was 6.0 and 10.8 months, respectively. Grade 3 neutropenia occurred in ten patients, while no grade 4 neutropenia or febrile neutropenia was observed. The most common non-hematologic toxicity was nausea (grade 1/2, 56.9%). There were no treatment-related deaths. CONCLUSION A weekly paclitaxel and cisplatin combination was found to be well-tolerated and effective in patients with advanced gastric cancer. Accordingly, this regimen can be regarded as an important first-line treatment option for advanced gastric cancer.
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Abstract
Malignant melanoma of the lacrimal sac is very rare and primary malignant melanoma is extremely rare. It is usually diagnosed at an advanced stage after excision or biopsy of a tumor. We treated a patient with tearing and bloody discharge from the left eye. We performed a dacryocystectomy with the suspicion of a chronic dacryocystitis. However, the pathological findings and the immunohistochemical studies showed a malignant melanoma of the lacrimal sac. The patient underwent postoperative irradiation therapy. Follow up two months after surgery revealed no evidence of recurrence. Early diagnosis is very important for prognosis in patients with malignant melanoma of the lacrimal sac. Because this tumor often presents with symptoms similar to dacryocystitis and may masquerade as a chronic dacryocystitis, it can be difficult to make an early diagnosis.
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Lee HS, Choe G, Kim WH, Kim HH, Song J, Park KU. Expression of Lewis antigens and their precursors in gastric mucosa: relationship with Helicobacter pylori infection and gastric carcinogenesis. J Pathol 2006; 209:88-94. [PMID: 16456898 DOI: 10.1002/path.1949] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Lewis (Le)-associated antigens are carbohydrates that are related biochemically to the ABO blood groups, and may have a role in Helicobacter pylori adherence. To evaluate their relationship to clinicopathological outcomes, gastric Le expression, including type 1 precursor, type 1 H, Le(a), Le(b), Le(x), Le(y) and sialylated Le(a) (CA19-9), was evaluated immunohistochemically in 233 gastric biopsy specimens obtained at routine gastroscopy. Expression was also investigated in gastric tissues showing chronic gastritis, intestinal metaplasia, and carcinoma from 42 patients with gastric cancer. A polymerase chain reaction was performed for H. pylori and the bacterial babA2 gene. We identified type 1 precursor expression in 34.3%, type 1 H in 55.8%, Le(a) in 44.2%, Le(b) in 82.0%, Le(x) in 44.2%, Le(y) 56.7%, and CA19-9 in 16.3% of the 233 gastric biopsy specimens. Expression of type 1 H, Le(b), and CA19-9 was significantly associated with H. pylori infection and histological features (p < 0.05), and expression of type 1 H was an independent predictive factor for H. pylori infection by multivariate logistic regression (p = 0.020). Positivity for the babA2 genotype correlated significantly with H. pylori infection and type 1 H expression in gastric biopsy specimens (p < 0.05). The babA2 genotype was more frequent in gastric mucosa from the gastric cancer patients than in gastric biopsy specimens from routine gastroscopy (p = 0.009). In the 42 gastric cancer patients, the frequency of type 1 precursor, Le(a), and Le(x) expression was significantly higher in intestinal metaplasia and carcinoma than in chronic gastritis (p < 0.05), but the frequency of type 1 H and Le(b) expression was significantly lower in intestinal metaplasia and carcinoma (p < 0.05). In conclusion, Le expression, especially that of type 1 H, was significantly associated with clinicopathological features. In gastric cancer patients, Le expression was altered in intestinal metaplasia and carcinoma in comparison with chronic gastritis.
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Kim MK, Lee KH, Hyun MS, Do YR, Song HS, Lee WS, Park KU, Baek JH, Kim JG. A multi-center, phase ii clinical trial of Padexol (paclitaxel) and cisplatin for patients suffering with advanced gastric cancer. Cancer Res Treat 2005; 37:349-53. [PMID: 19956371 DOI: 10.4143/crt.2005.37.6.349] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2005] [Accepted: 11/11/2005] [Indexed: 11/21/2022] Open
Abstract
PURPOSE We conducted a multi-center, phase II trial to evaluate the efficacy and safety of using Padexol (a paclitaxel formulation) combined with cisplatin for the patients suffering with advanced gastric adenocarcinoma. MATERIALS AND METHODS 39 patients (median age: 60 years; males: 90%) who were diagnosed with advanced gastric cancer were enrolled from 5 hospitals. Padexol 175 mg/m² was administered as a 3-hr infusion, and this was followed by cisplatin 75 mg/m² as an intravenous infusion on day 1, once every 3 weeks. RESULTS Out of these 39 patients, 34 patients were assessable for treatment efficacy and 39 patients were assessable for the toxicity. Objective responses occurred in 13 patients (33%); 1 patient (3%) had a complete response and 12 patients (31%) had partial responses. 6 patients (15%) achieved a stable disease state. The median duration of response was 7.1 months, and the median time to progression and the overall survival were 4.8 months and 6.7 months, respectively. The major treatment-related adverse events were hematologic toxicity, including WHO grade 3 or 4 neutropenia in 13 patients (33%). However, febrile neutropenia occurred in only 1 patient and the non-hematologic toxicity was usually mild. CONCLUSION The combination of Padexol and cisplatin was found to be active and it seems to be a relatively well-tolerated regimen for the treatment of advanced gastric cancer.
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Baek JH, Kim JG, Sohn SK, Kim DH, Lee KB, Song HS, Kwon KY, Do YR, Ryoo HM, Bae SH, Park KU, Kim MK, Lee KH, Hyun MS, Chung HY, Yu W. Biweekly irinotecan and cisplatin as second-line chemotherapy in pretreated patients with advanced gastric cancer: a multicenter phase II study. J Korean Med Sci 2005; 20:966-70. [PMID: 16361806 PMCID: PMC2779328 DOI: 10.3346/jkms.2005.20.6.966] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The current phase II study was conducted to evaluate the response rate and safety of a combination regimen of biweekly irinotecan plus cisplatin in pretreated patients with advanced gastric cancer. Patients with previously treated metastatic or recurrent gastric cancer received intravenous irinotecan 70 mg/m2 and cisplatin 30 mg/m2 on day 1 and 15 every 4-week cycle. Thirty-two patients were enrolled in the current study. Of these, 31 patients were assessable for efficacy and all for toxicity. No complete response and 5 partial responses were confirmed, giving an overall response rate of 15.6% (95% CI; 2.3-28.9%). The median time to progression and median overall survival for all patients was 113 days and 184 days, respectively. Grade 3/4 neutropenia occurred in 6 patients (18.8%), yet no febrile neutropenia was observed. In addition, grade 3 anorexia was observed in 4 patients (12.5%) and grade 3 diarrhea occurred in 2 patients (6.2%). The combination chemotherapy of biweekly irinotecan and cisplatin was found to be moderately effective and well tolerated in pretreated patients with advanced gastric cancer. Accordingly, this regimen can be regarded as an important second-line treatment option for advanced gastric cancer.
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Park KU, Song J, Kim JQ. Haptoglobin genotypic distribution (including Hp0 allele) and associated serum haptoglobin concentrations in Koreans. J Clin Pathol 2004; 57:1094-5. [PMID: 15452167 PMCID: PMC1770454 DOI: 10.1136/jcp.2004.017582] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Haptoglobin polymorphism is associated with the prevalence of infections, autoimmune diseases, cardiovascular diseases, and other disorders. Congenital haptoglobin deficiency is associated with anaphylactic transfusion reactions in anhaptoglobinaemic patients with antihaptoglobin antibody. AIMS To investigate haptoglobin genotypic distribution (including the Hp(0) allele) and associated serum haptoglobin concentrations in Koreans. METHODS Five hundred and nine healthy Korean adults were randomly selected. Two methods were used: haptoglobin genotyping based on a polymerase chain reaction (PCR) system that exploited the structural difference of the Hp(1) and Hp(2 )alleles, and another PCR method that detected haptoglobin gene deletion by amplification of the junctional region of the Hp(0) allele. Serum haptoglobin concentrations were measured by nephelometry. RESULTS The haptoglobin genotypes of 509 subjects were as follows: Hp(1)Hp(1), 7.1%; Hp(2)Hp(1), 37.7%; Hp(2)Hp(2), 49.3%; Hp(0)Hp(1), 2.2%; Hp(0)Hp(2), 3.5%; Hp(0)Hp(0), 0.2%. The gene frequency of Hp(0) in Koreans was calculated to be 0.031. Significant differences were seen among the concentrations of each haptoglobin genotype (Kruskal-Wallis test). Hp(0)Hp(2), but not Hp(0)Hp(1), was associated with hypohaptoglobinaemia. CONCLUSIONS PCR methods for differentiating between haptoglobin genotypes, including the Hp(0) allele, may be useful in a broad spectrum of basic studies and clinical examinations.
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Cheong HK, Choi DS, Park KU, Kim JR, Ha KI, Yun HJ, Yang SO, Kim Y. Quantitative assessment of bone marrow cellularity by magnetic resonance imaging in workers with long-term exposure to solvents. INDUSTRIAL HEALTH 2004; 42:179-188. [PMID: 15128167 DOI: 10.2486/indhealth.42.179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This study was conducted to develop a noninvasive method of bone marrow cellularity evaluation in solvent-exposed painters. Six painters with hypocellular marrow and 132 referents were examined using magnetic resonance imaging (MRI). Full examination of the peripheral blood and bone marrow biopsy was done on each patient. Signal indices were calculated from the signal intensities measured at the vertebral bodies from T12 to S1 and on the paraspinal muscles on both the T1- and the T2-weighted image (T1WI and T2WI). Bone marrow cellularities of the painters were between 20.3% and 33.6%. Signal indices at T1WI were greater in the hypocellular marrow cases compared to those of the referents (p<0.05, p<0.01) and were significantly higher in older women compared with men (p<0.05). After adjusting for age and gender, the signal index of cases at S1 of T1WI was higher than that of the referents by 0.364. Five of the six cases had signal index at S1 of T1WI higher than the mean +1 standard deviation for the same age group and gender. MRI signal indices can be used as a useful indicator of bone marrow cellularity in a high-risk population after adequate adjustment.
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Park JN, Suh C, Yang J, Park JS, Park KU, Min YJ, Kim HJ, Kim YH, Kim SH. Active immunization using dendritic cells mixed with tumor cells inhibits the growth of lymphomas. J Korean Med Sci 2003; 18:372-80. [PMID: 12808324 PMCID: PMC3055039 DOI: 10.3346/jkms.2003.18.3.372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Dendritic cells (DCs) are potent antigen-presenting cells for the induction and activation of cytotoxic T lymphocytes. We tested whether bone marrow-derived DCs are capable of inducing protective immunity against a murine lymphoma (A20). DCs were grown from tumor-bearing BALB/c mice by culturing bone marrow cells. BALB/c mice were injected (sc) with A20 cells on day 0. Intraperitoneal immunization with DCs mixed with lethally irradiated A20 cells were started when the tumor reached ca. 4-5 mm in diameter (Group A) or on day -7 (Group B). Booster immunizations were given every 3-4 days for four weeks. By 31 days in group A, there was a significant reduction in tumor growth in the mice immunized with DCs mixed with irradiated A20 cells as compared with the control groups (p=0.016). In group B, tumor growth was completely inhibited and there was no tumor growth following extended observations after completion of immunization. Thus, DCs mixed with irradiated tumor cells can induce an antitumor effect. This provides a rationale for the use of DCs mixed with irradiated tumor cells in immunotherapy for minimal residual disease of lymphomas.
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Lee CH, Park KU, Nah DY, Won KS. Bilateral spontaneous pneumothorax during cytotoxic chemotherapy for angiosarcoma of the scalp: a case report. J Korean Med Sci 2003; 18:277-80. [PMID: 12692429 PMCID: PMC3055033 DOI: 10.3346/jkms.2003.18.2.277] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Spontaneous pneumothorax is a rare manifestation of metastatic lung cancers and described in advanced diseases or during cytotoxic chemotherapy which is manifested by sudden onset of dyspnea. The cause or mechanism of spontaneous pneumothorax has been unknown, as well as the association with site of metastases or type of cancers or side effect of chemotherapeutic drugs has been reported rarely. A 68-yr-old man underwent excision of angiosarcoma of the scalp. Chest radiography did not show any evidence of possible metastatic lung lesion at that time. Therefore, systemic doxorubicin and dacarbazine were given. After nineteen days of chemotherapy, he developed a bilateral spontaneous pneumothorax and palpable cervical lymph nodes. Both parietal and visceral pleura were intact and showed no evidence of metastatic and pathologic lesions on thoracoscopic evaluation. The patient managed with bilateral tube thoracostomy and both lungs were expanded. Lymph nodes became unpalpable during three cycles of the paclitaxel and doxorubicin, however, bilateral lung metastases were developed and progressed despite chemotherapy. The patient died due to respiratory failure after five months. This report underlines that spontaneous pneumothorax can occur as the first manifestation of metastatic angiosarcoma even if imaging studies do not show of a metastatic lesion.
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Min YJ, Suh CW, Park KU, Yoon SS, Park CH, Lee HG. The Efficacy and Safety of DA-3030 (Recombinant Human Granulocyte Colony-Stimulating Factor) in Neutropenia after the Remission Induction Chemotherapy in Patients with Acute Myelogenous Leukemia. Cancer Res Treat 2003; 35:66-8. [DOI: 10.4143/crt.2003.35.1.66] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Lee JL, Kim SB, Lee GW, Ryu MH, Kim EK, Kim S, Kim WK, Lee JS, Park KU, Suh C. Clinical usefulness of the hematopoietic progenitor cell counts in predicting the optimal timing of peripheral blood stem cell harvest. J Korean Med Sci 2003; 18:27-35. [PMID: 12589083 PMCID: PMC3054996 DOI: 10.3346/jkms.2003.18.1.27] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Although enumeration of CD34+ cells in the peripheral blood (PB) on the day of apheresis predicts the quantity of those cells collected, the flow cytometric techniques used are complex and expensive, and several hours are required to obtain the result in the clinical practice setting. The Sysmex SE-9000 automated haematology analyzer provides an estimate of immature cells, called hematopoietic progenitor cells (HPC). The aim of this study was to evaluate the clinical usefulness of HPC in predicting the optimal timing of peripheral blood progenitor cells (PBPC) harvest. Studies were performed on 628 aphereses from 160 patients with hematologic or solid malignancies. Spearman's rank statistics was used to assess correlation between HPC, WBC, mononuclear cells (MNC), and CD34+ cells. A receiver operating characteristic (ROC) curve was drawn for cutoff value of HPC, and predictive values of the chosen cutoff value of HPC for different target CD34+ cell collections were calculated. The PB HPC had a stronger correlation (rho=0.592, p<0.001) with collected CD34+ cells than did PB WBC and PB MNC. The ROC curve showed that the best cutoff value of HPC was 50 x 10(6)/L for the target CD34+ cells > or =1 x 10(6)/kg with sensitivity of 75%. Positive and negative predictive values of HPC > or =50 x 10(6)/L for CD34+ cells > or =1 x 10(6)/kg were 59.7% and 81.1%, respectively. In the clinical practice setting, applying variable cutoff values of HPC would be a useful tool to predict the optimal timing of PBPC collection.
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Park KU, Lee DS, Lee HS, Kim CJ, Cho HI. Granulocytic sarcoma in MLL-positive infant acute myelogenous leukemia: fluorescence in situ hybridization study of childhood acute myelogenous leukemia for detecting MLL rearrangement. THE AMERICAN JOURNAL OF PATHOLOGY 2001; 159:2011-6. [PMID: 11733351 PMCID: PMC1850598 DOI: 10.1016/s0002-9440(10)63052-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Granulocytic sarcoma is considered to be rare and its frequent occurrence is associated with specific genetic changes such as t(8;21). To investigate an association between MLL (mixed lineage leukemia or myeloid-lymphoid leukemia) rearrangement and granulocytic sarcoma, we applied fluorescence in situ hybridization for detection of the 11q23/MLL rearrangements on the bone marrow cells of 40 patients with childhood acute myelogenous leukemia (AML). Nine (22.5%) of 40 patients exhibited MLL rearrangements. Three (33.3%) of these nine patients had granulocytic sarcoma and were younger than 12 months of age. Of these three patients one presented as granulocytic sarcoma of both testes with cerebrospinal fluid involvement, the second case presented in the form of an abdominal mass, and the third as a periorbital granulocytic sarcoma. On the other hand, no granulocytic sarcomas were found among MLL-negative patients. It is likely that MLL-positive infant AML may predispose granulocytic sarcoma. Regarding the findings of our study and those of other reports, we would guess that the incidence of granulocytic sarcoma in pediatric MLL-positive AML may be equal to or greater than the 18 to 24% described in AML with t(8;21). Further investigations designed to identify 11q23/MLL abnormalities of leukemic cells or extramedullary tumor may be helpful for the precise diagnosis of granulocytic sarcoma.
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Park IG, Suh CW, Hur JR, Kim SJ, Park KU, Park SJ, Seo DD, Ahn MS, Jang GD, Kim WK. A Case of a Young Woman with Hepatosplenic gamadelta T-cell Lymphoma. Cancer Res Treat 2001; 33:264-8. [DOI: 10.4143/crt.2001.33.3.264] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Park KU, Kim SH, Suh C, Kim S, Lee SJ, Park JS, Cho HJ, Kim KW, Lee K, Kim HJ, Park J, Joo Min Y, Kim JG, Kim T, Lee JH, Kim SB, Kim SW, Lee KH, Lee JS, Kim WK, Park CJ, Chi HS. Correlation of hematopoietic progenitor cell count determined by the SE-automated hematology analyzer with CD34(+) cell count by flow cytometry in leukapheresis products. Am J Hematol 2001; 67:42-7. [PMID: 11279656 DOI: 10.1002/ajh.1074] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The yield of stem cell collection after mobilization is crucial for autologous peripheral blood stem cell (PBSC) transplantation. Quantitative determinations of CD34(+) cells using flow cytometry or stem cell culture have been used, but these methods require much time, technical experience, and expensive reagents. The automated hematology analyzer (Sysmex SE-9000trade mark, TOA, Japan) equipped with the Immature Information (IMI) channel for immature myeloid cells can detect IMI(+) cells within 90 sec. Detection is made possible by the combination of a special reagent system and direct current/radiofrequency biosensors. We studied the relation of IMI(+) cells and variable cell counts with CD34(+) cell yield in autologous stem cell harvest. In a series of 32 patients (median age, 44 years; M:F = 11:21), 184 leukaphereses were performed after mobilization regimens with chemotherapy and G-CSF or G-CSF alone. Full blood cell counts were enumerated on peripheral blood (PB) samples taken prior to each leukapheresis. Mononuclear cell (MNC) and IMI(+) cell counts by automated hematology analyzer and flow cytometry based CD34(+) cell yield were measured on the harvested product. The relationship among PB white blood cells (WBC), PB monocytes, IMI(+) cells, MNC, and CD34(+) cell yield in a single leukapheresis was estimated by Pearson correlation analysis. PB WBC count showed no correlation with CD34(+) cell yield in a single leukapheresis (r = 0.02, P = 0.81). PB monocyte count showed a weak correlation (r = 0.21, P = 0.01) and MNC in harvest also showed a weak correlation (r = 0.36, P = 0.0001) with CD34(+) cell yield. In contrast, CD34(+) cell yield correlated well with IMI(+) cell count (r = 0.68, P = 0.0001), and data could be fitted by a linear regression equation, y = 0.330 + 0.974x. IMI(+) cell assay by the automated hematology analyzer correlated well with the CD34(+) cell yield in a mobilized autologous stem cell harvest. The IMI(+) cell count might be used as a simple and efficient indicator of blood stem cell mobilization and collection.
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Park KU, She CJ, Shin HY, Ahn HS, Kim CJ, Cho BK, Cho HI, Lee DS. Low incidence of TEL/AML1 fusion and TEL deletion in Korean childhood acute leukemia by extra-signal fluorescence in situ hybridization. CANCER GENETICS AND CYTOGENETICS 2001; 126:73-7. [PMID: 11343784 DOI: 10.1016/s0165-4608(00)00374-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
TEL/AML1 fusion in acute leukemia results from cryptic translocation of chromosome 12 and 21, the presence of which suggests a favorable prognosis. The incidence of TEL/AML1 fusion in B-lineage ALL is approximately 25%, but the incidence in Korea has not yet been reported. To investigate the incidence of TEL/AML1 fusion and TEL deletion, bone marrow specimens from 77 Korean children with newly diagnosed acute leukemia were analyzed by FISH. We applied extra-signal FISH to discriminate a true TEL/AML1 fusion from a false-positive fusion signal. To determine the cut-off value of the TEL/AML1 fusion signal, 20 normal bone marrow specimens and 28 normal peripheral blood specimens were also analyzed. The frequency of patients with TEL/AML1 fusion was 13.3% (4 cases) among 30 B-lineage ALL and 9.5% among 42 ALL. One TEL/AML1 fusion-positive patient was also found among 4 acute biphenotypic leukemias. TEL/AML1 fusion was not found in any samples from patients with T-lineage ALL or AML. The incidence of TEL deletion was 6.7% (2 cases) among 30 B-lineage ALL and 4.8% among 42 ALL. The incidences of TEL/AML1 fusion and TEL deletion in Korean children with acute leukemia appear to be lower than those in other countries, suggesting a racial difference.
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Park KU, Lee HS, Kim CJ, Kim EC. Fungal discitis due to Aspergillus terreus in a patient with acute lymphoblastic leukemia. J Korean Med Sci 2000; 15:704-7. [PMID: 11194199 PMCID: PMC3054694 DOI: 10.3346/jkms.2000.15.6.704] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We report a case of Aspergillus terreus discitis which developed in a patient with acute lymphoblastic leukemia following induction chemotherapy. A. terreus was isolated from sputum, one month earlier, but the physician did not consider it significant at the time. Magnetic resonance imaging study showed the involvement of L3-4, L4-5 and L5-S1 intervertebral discs. Etiology was established by means of histology and culturing a surgical specimen of disc materials. Our patient survived after a surgical debridement and amphotericin B administration with a total dose of 2.0 g. Discitis caused by Aspergillus terreus is a very rare event. A. terreus is one of the invasive Aspergillus species. The pathogenetic mechanism is discussed and the literature is reviewed.
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Woo SI, Koh YM, Ahn HS, Baik JJ, Park KU, Chung YT. Two Cases of Acute Epiglottitis with Sitting up Position, Chin Thrust Forward, Having Dyspnea. Tuberc Respir Dis (Seoul) 1996. [DOI: 10.4046/trd.1996.43.1.88] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Kim JW, Cho YJ, Baek JJ, Park KU, Chung Y. A Case of Sarcoidosis with Bone Involvemnt. Tuberc Respir Dis (Seoul) 1995. [DOI: 10.4046/trd.1995.42.3.407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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