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Kim H, Moon HW, Hur M, Yun YM, Lee MH. Acute myeloid leukemia with a RUNX1-RUNX1T1 t(1;21;8)(q21;q22;q22) novel variant: a case report and review of the literature. Acta Haematol 2011; 125:237-41. [PMID: 21325813 DOI: 10.1159/000323425] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Accepted: 12/07/2010] [Indexed: 11/19/2022]
Abstract
Variants of t(8;21)(q22;q22) account for approximately 3% of all t(8;21) in acute myeloid leukemia (AML). We report a 63-year-old female patient with AML, who showed a 3-way novel variant of t(8;21), t(1;21;8)(q21;q22;q22). She presented with gastric discomfort and splenomegaly, and her complete blood count was: white blood cell count 7.96 × 10(9)/l, with 7% blasts; hemoglobin 8.3 g/dl, and platelets 66 × 10(9)/l. Her bone marrow showed increased blasts (32.5%) with a basophilic cytoplasm, salmon-pink granules and Auer rods. Cytogenetic analysis revealed a karyotype of 46,XX,t(1;21;8)(q21;q22;q22), and fluorescence in situ hybridization confirmed a RUNX1-RUNX1T1 fusion signal on the derivative chromosome 8. After induction chemotherapy, the patient achieved complete remission and has been stable for 6 months. To the best of our knowledge, this is the first report on the novel variant of t(8;21) involving the breakpoint 1q21 and the third case with a translocation among chromosomes 1, 21 and 8. Although the clinical relevance of variant t(8;21) is still unclear, a review of 24 such cases in the literature does not imply a poorer prognosis of variant t(8;21) than of the classic t(8;21).
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Affiliation(s)
- Hanah Kim
- Department of Laboratory Medicine, Konkuk University School of Medicine, Seoul, Korea
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Kim HS, Kim KH, Kwon HW, Kang TY, Hur M, Kim HS, Kim JS, Song W, Kang HJ, Lee KM. Evaluation of Rapid Antigen Test for the Detection of Norovirus Infection: Comparison with ELISA and Real Time Quantitative Reverse Transcription PCR Assays. ACTA ACUST UNITED AC 2011. [DOI: 10.3343/lmo.2011.1.4.3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Hyun Soo Kim
- Department of Laboratory Medicine, Hallym University College of Mecidine, Seoul, Korea
| | - Kyung Hee Kim
- Department of Laboratory Medicine, Hallym University College of Mecidine, Seoul, Korea
| | - Hye Won Kwon
- Department of Laboratory Medicine, Hallym University College of Mecidine, Seoul, Korea
| | - Tae Yeong Kang
- Department of Laboratory Medicine, Hallym University College of Mecidine, Seoul, Korea
| | - Mina Hur
- Department of Laboratory Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Han-Sung Kim
- Department of Laboratory Medicine, Hallym University College of Mecidine, Seoul, Korea
| | - Jae-Seok Kim
- Department of Laboratory Medicine, Hallym University College of Mecidine, Seoul, Korea
| | - Wonkeun Song
- Department of Laboratory Medicine, Hallym University College of Mecidine, Seoul, Korea
| | - Hee Jung Kang
- Department of Laboratory Medicine, Hallym University College of Mecidine, Seoul, Korea
| | - Kyu Man Lee
- Department of Laboratory Medicine, Hallym University College of Mecidine, Seoul, Korea
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Moon HW, Yun YM, Kim S, Choe WH, Hur M, Kim JQ. Determination of Carbohydrate-deficient Transferrin Levels by Using Capillary Electrophoresis in a Korean Population. Ann Lab Med 2010; 30:477-84. [DOI: 10.3343/kjlm.2010.30.5.477] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Hee-Won Moon
- Departments of Laboratory Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Yeo-Min Yun
- Departments of Laboratory Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Serim Kim
- Departments of Laboratory Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Won Hyeok Choe
- Departments of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Mina Hur
- Departments of Laboratory Medicine, Konkuk University School of Medicine, Seoul, Korea
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Cho J, Hur M, Moon HW, Yun YM, Lee CH, Lee HG. A case of therapy-related ALL with MLL gene rearrangement following treatment of breast cancer. Korean J Lab Med 2010; 30:255-9. [PMID: 20603585 DOI: 10.3343/kjlm.2010.30.3.255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
ALL with MLL gene rearrangement secondary to chemotherapy has been rarely reported. We report a case of therapy-related ALL (t-ALL) with MLL gene rearrangement in a patient who had undergone treatment for breast cancer. A 60-yr-old woman with breast cancer underwent breast-conserving surgery followed by 6 cycles of adjuvant chemotherapy (cyclophosphamide, epirubicin, and fluorouracil) and radiation therapy (dose, 5,040 cGy to the left breast and a 1,000 cGy boost to the tumor bed). A follow-up examination performed 14 months after the chemotherapy revealed no evidence of breast malignancy. However, the patient's complete blood cell count indicated acute leukemia: white blood cell count, 174.1 x 10(9)/L with 88% blasts; Hb level, 12.5 g/dL; and platelet count, 103.0 x 10(9)/L. Examination of the bone marrow aspirate smear revealed a high percentage of blasts (85.1% of all nucleated cells); the blasts showed a pro-B immunophenotype and were positive for CD19, CD79a, HLA-DR, CD34, and terminal deoxynucleotidyl transferase (TdT). Cytogenetic and FISH analyses revealed t(4;11)(q21;q23) and MLL gene rearrangement, respectively. The patient received induction chemotherapy with cyclophosphamide, vincristine, doxorubicin, and dexamethasone and achieved complete remission. Following consolidation chemotherapy, she underwent allogenic peripheral blood stem cell transplantation and has been clinically stable. To our knowledge, this is the first reported case of t-ALL with MLL gene rearrangement following treatment of breast cancer in Korea.
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Affiliation(s)
- Jinhee Cho
- Department of Laboratory Medicine, Konkuk University School of Medicine, Seoul, Korea
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Kim HS, Kim CH, Hur M, Hyun IG, Park MJ, Song W, Park JY, Kang HJ, Lee KM. [Clinical usefulness of T-SPOT.TB test for the diagnosis of tuberculosis]. Korean J Lab Med 2010; 30:171-7. [PMID: 20445336 DOI: 10.3343/kjlm.2010.30.2.171] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Tuberculosis-specific ELISPOT assay (T-SPOT.TB, Oxford Immunotec, UK) is a test that detects interferon-gamma producing T-cells after stimulating patient's lymphocytes with two kinds of tuberculosis-specific antigens (ESAT-6 and CFP-10). We evaluated clinical usefulness of T-SPOT.TB test in Korean adults with intermediate burden of tuberculosis and high rate of BCG vaccination at birth. METHODS T-SPOT.TB test was performed in 79 patients and 64 healthy volunteers and these patients and volunteers were classified into four groups: group 1, patients with active tuberculosis (n=30); group 2, patients with not-active tuberculosis (n=27); group 3, patients without tuberculosis (n=24); group 4, healthy volunteers without tuberculosis history (n=62). Positive rates and average spot counts of T-SPOT.TB test were obtained among these groups. RESULTS Positive rates of group 1 (96.4%) and group 2 (92.3%) were higher than those of group 3 (31.6%) and group 4 (27.4%) (P<0.0001). The sensitivity deduced from group 1 and specificity deduced from group 4 of T-SPOT.TB test were 96.4% and 72.6%, respectively. The average spot counts of group 1 and 2 were higher than those of group 3 and 4 (P<0.001). There was a tendency of increasing positive rate with increasing age. Overall agreement between T-SPOT.TB test and tuberculin skin test was 63.8% (kappa=0.29). CONCLUSIONS T-SPOT.TB test would be a very useful screening and supplementary test for diagnosis of tuberculosis due to its high sensitivity. However, positive results of T-SPOT.TB should be cautiously interpreted because of high positivity in treated tuberculosis patients and healthy volunteers in Korea.
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Affiliation(s)
- Hyun Soo Kim
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, Korea.
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156
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Moon HW, Yun YM, Hur M, Park JH, Lee HW, Chang SH, Yun IJ. [An experience of ABO-incompatible kidney transplantation using plasmapheresis and anti-CD20 monoclonal antibody]. Korean J Lab Med 2010; 29:585-8. [PMID: 20046092 DOI: 10.3343/kjlm.2009.29.6.585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Due to an extreme shortage of cadaveric kidneys, many centers in Japan successfully performed ABO-incompatible kidney transplantations using plasmapheresis, splenectomy and immunosuppression. Recently, a protocol including anti-CD20 monoclonal antibody (rituximab) and antigen-selective immunoadsorption has been used for ABO-incompatible transplantation in Europe. In Korea, ABO-incompatible kidney transplantation has been rarely performed. We report an experience of successful ABO-incompatible kidney transplantation using plasmapheresis and rituximab. The patient was a 32-yr-old female suffering from chronic renal failure, and her blood type was O, Rh+. The donor was her husband, and his blood type was B, Rh+. A combination therapy including 5 times of plasmapheresis starting from 10 days before transplantation with 2-day interval, intravenous gammaglobulin, rituximab at 2 weeks before transplantation and potent immunosuppression successfully decreased the titers of anti-A and anti-B antibodies to 1:2 and 1:1, respectively. The kidney transplantation was successful without any sign of hyperacute or acute rejection.
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Affiliation(s)
- Hee-Won Moon
- Department of Laboratory Medicine, Konkuk University School of Medicine, Seoul, Korea
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Hur M, Moon HW, Yun YM, Kim KH, Kim HS, Lee KM. [Comparison of diagnostic utility between procalcitonin and C-reactive protein for the patients with blood culture-positive sepsis]. Korean J Lab Med 2010; 29:529-35. [PMID: 20046084 DOI: 10.3343/kjlm.2009.29.6.529] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Procalcitonin (PCT) is a relatively new marker for bacterial infections, and its diagnostic utility has been variable across the studies. We investigated the diagnostic utility of PCT for the patients with blood culture-positive sepsis, and compared it with that of C-reactive protein (CRP). METHODS In 1,270 consecutive blood samples, PCT and CRP were simultaneously measured and results were compared according to the five categories of PCT concentrations (<0.05 ng/mL; 0.05-0.49 ng/mL; 0.5-1.99 ng/mL; 2-9.99 ng/mL; > or = 10 ng/mL). In 506 samples, they were further analyzed according to the result of blood culture. PCT and CRP were measured using enzyme-linked fluorescent assay (bioMerieux Co., France) and rate nephelometry (Beckman Coulter Co., USA), respectively. Their diagnostic utilities were compared using ROC curves. RESULTS The mean concentrations of CRP in five categories of PCT were 15.4 mg/L, 42.1 mg/L, 101.2 mg/L, 125.0 mg/L, 167.1 mg/L, respectively (P<0.0001). Both PCT and CRP showed significant differences between the two positive and negative groups of blood culture (PCT, 8.47 vs 2.44 ng/mL, P=0.0133; CRP, 110.48 vs 59.78 mg/L, P<0.0001). The areas under the ROC curves (95% confidence interval) for PCT and CRP were 0.720 (0.644-0.788) and 0.558 (0.478-0.636), respectively, and showed a significant difference (P=0.005). CONCLUSIONS The diagnostic utility of PCT is superior to that of CRP for the patients with blood culture-positive sepsis. PCT seems to be reliable for sepsis diagnosis, and may provide useful information for the critically ill patients.
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Affiliation(s)
- Mina Hur
- Department of Laboratory Medicine, Konkuk University School of Medicine, Seoul, Korea.
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Moon HW, Cho JH, Hur M, Yun YM, Choe WH, Kwon SY, Lee CH. Laboratory characteristics of recent hepatitis A in Korea: Ongoing epidemiological shift. World J Gastroenterol 2010; 16:1115-8. [PMID: 20205283 PMCID: PMC2835789 DOI: 10.3748/wjg.v16.i9.1115] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate seroprevalence of hepatitis A virus (HAV) antibody and investigate demographic, clinical, and laboratory features of recent cases in Korea.
METHODS: For the evaluation of hepatitis A seroprevalence, we analyzed the data from 3127 subjects including, healthcare workers and patients who visited Konkuk University Hospital, a secondary referral center, from January to October 2009. The sera with positive IgM were excluded from seroprevalence data for total HAV antibody. We retrospectively reviewed the electronic medical records of 419 patients with HAV, who were diagnosed by the presence of serum IgM antibodies against HAV. All patients presented at Konkuk University Hospital between August 2005 and September 2008.
RESULTS: Among 3127 sera tested, 1428 (45.7%) were positive for anti-HAV antibody. The seroprevalence was very low in teenagers or those in their twenties, increased in those in their thirties, and was > 90% in older patients. In children younger than 10 years, seroprevalence was increased again. Most patients with HAV hepatitis were in their twenties and thirties. The γ-glutamyl transpeptidase increased with age and was significantly higher in patients older than 30 years. Indicators of severity, such as decreased albumin and increased bilirubin, were also more prominent in the older age group; however, the leukocyte count was higher and the frequency of leukopenia was lower in younger patients than in older adults.
CONCLUSION: There has been an apparent epidemiological shift in HAV seroprevalence and a change in the peak age of HAV hepatitis. This study could provide baseline data of recent hepatitis A in Asia.
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Cho JH, Hur M, Kim SY. Refractory anemia with ring sideroblasts in a young individual. Korean J Hematol 2010; 45:6. [PMID: 21120155 PMCID: PMC2983010 DOI: 10.5045/kjh.2010.45.1.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Jin-Hee Cho
- Department of Laboratory Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Mina Hur
- Department of Laboratory Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Sung Yong Kim
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
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Chang JD, Kamdar R, Yoo JH, Hur M, Lee SS. Third-generation ceramic-on-ceramic bearing surfaces in revision total hip arthroplasty. J Arthroplasty 2009; 24:1231-5. [PMID: 19473806 DOI: 10.1016/j.arth.2009.04.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Accepted: 04/13/2009] [Indexed: 02/01/2023] Open
Abstract
With an increase of revision total hip arthroplasty (THA), the choice of bearing surface becomes more important. Wear debris by conventional metal-on-polyethylene articulations may cause extensive osteolysis, especially in young patients. We analyzed the clinical and radiographic outcomes after revision THA using third-generation ceramic-on-ceramic bearing surfaces in 42 hips. The mean age of the patients was 48.8 years (32-59 years), and the mean duration of follow-up monitoring was 5.4 years (3.2-8.0 years). At final follow-up examination, the average Harris Hip Score was 91.3. Although minor complications were observed in 6 hips (14.3%), no hips required additional revision surgery. No hip showed radiolucent lines, acetabular cup migration, or osteolysis. Our data show that clinical and radiographic outcomes after revision THA using third-generation ceramic-on-ceramic bearing surfaces are favorable. Ceramic-on-ceramic bearing surfaces can be preferentially considered for revision THA, especially in young patients. Further studies with long-term follow-up data are warranted.
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Affiliation(s)
- Jun-Dong Chang
- Department of Orthopaedic Surgery, Hallym University College of Medicine, Hangang Sacred Heart Hospital, Seoul, Republic of Korea
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Hur M, Cho HC, Lee KM, Park H, Lee SY, Kim KN, Kim SH, Ki CS. Cleft palate in a rare case of Variant Klinefelter syndrome with 48,XXXY/46,XY mosaicism. Cleft Palate Craniofac J 2009; 46:555-7. [PMID: 19929089 DOI: 10.1597/07-149.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Variant Klinefelter syndrome with 48,XXXY/46,XY mosaicism has been rarely reported, and its phenotypic features, compared with those of the classic type, have not been well delineated. We describe a newborn baby with phenotypic abnormalities, including cleft palate and low-set ears. The cytogenetic analysis of peripheral blood lymphocytes showed a karyotype of 48,XXXY[36]/46,XY[4]. To the best of our knowledge, this is the first case in which 48,XXXY/46,XY mosaicism was related to the congenital anomaly of cleft palate. This case underscores that cytogenetic analysis should be a mandatory workup for the patient with cleft palate and that cleft palate may be a rare clinical presentation of the variant Klinefelter syndrome.
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Affiliation(s)
- Mina Hur
- Department of Laboratory Medicine, Konkuk University School of Medicine, Seoul, Korea
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Moon HW, Noh JK, Hur M, Yun YM, Lee CH, Kwon SY. High prevalence of autoantibodies in hepatitis A infection: the impact on laboratory profiles. J Clin Pathol 2009; 62:786-8. [DOI: 10.1136/jcp.2009.064410] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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163
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Yoon C, Kang W, Ko S, Hur M, Lee H, Kang S. 0101 Is BCS always successful? Breast 2009. [DOI: 10.1016/s0960-9776(09)70143-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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164
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Hur M, Yoon C, Ko S, Lee H, Kim S, Park H, Han A, Kang S. 0213 Clinical characteristics of triple negative breast cancers. Breast 2009. [DOI: 10.1016/s0960-9776(09)70230-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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165
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Chang JD, Hur M, Lee SS, Yoo JH, Lee KM. Genetic background of nontraumatic osteonecrosis of the femoral head in the Korean population. Clin Orthop Relat Res 2008; 466:1041-6. [PMID: 18350352 PMCID: PMC2311470 DOI: 10.1007/s11999-008-0147-1] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2007] [Accepted: 01/18/2008] [Indexed: 01/31/2023]
Abstract
Major thrombophilic mutations have been identified as risk factors for nontraumatic osteonecrosis of the femoral head (ONFH) in Caucasians. We asked whether the genetic background of patients with ONFH in the Korean population was similar. We analyzed factor V G1691A mutation (factor V Leiden), prothrombin G20210A mutation, and methylenetetrahydrofolate reductase C677T and A1298C polymorphisms in 71 patients (53 men, 18 women) with ONFH. We classified these patients as 51 alcohol-induced, 18 idiopathic, one steroid-induced, and one dysbaric. We recruited 200 normal control subjects (128 men, 72 women). We used multiplex PCR/restriction fragment length polymorphism for each genotyping. We observed neither factor V Leiden nor prothrombin G20210A mutation. Although methylenetetrahydrofolate reductase A1298C genotypes were not associated with osteonecrosis, methylenetetrahydrofolate reductase C677T variant genotypes increased the risk of ONFH compared with 677CC. Odds ratios of 677CT and 677CT+TT were 2.00 (95% confidence interval, 1.05-3.81) and 1.96 (95% confidence interval, 1.07-3.59), respectively, compared with 677CC. Our data suggest methylenetetrahydrofolate reductase C677T polymorphism plays a role in the pathogenesis of osteonecrosis in the Korean population. It also implies the genetic risk profile of ONFH may differ among ethnic populations.
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Affiliation(s)
- Jun-Dong Chang
- Department of Orthopedic Surgery, Hallym University College of Medicine, Seoul, Korea
| | - Mina Hur
- Department of Laboratory Medicine, Hangang Sacred Heart Hospital, Hallym University College of Medicine, 94-200, Youngdeungpo-dong, Youngdeungpo-gu, Seoul, 150-719 Korea
| | - Sang-Soo Lee
- Department of Orthopedic Surgery, Hallym University College of Medicine, Seoul, Korea
| | - Je-Hyun Yoo
- Department of Orthopedic Surgery, Hallym University College of Medicine, Seoul, Korea
| | - Kyu Man Lee
- Department of Laboratory Medicine, Hangang Sacred Heart Hospital, Hallym University College of Medicine, 94-200, Youngdeungpo-dong, Youngdeungpo-gu, Seoul, 150-719 Korea
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Park Y, Kang S, Ko S, Lee H, Hur M, Kim J, Yoon C. Proposal for using an international unified draft for chemotherapeutic regimen time schedule table: Chemo Box. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)70344-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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167
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Hur M, Kim J, Yoon C, Ko S, Lee H, Lee J, Kang S. Breast cancer screening in Korea. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)70485-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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168
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Yang JH, Jung JY, So CS, Lim YJ, Han SY, Park S, Kim JH, Hur M, Lee GK, Shim JW, Park YI. A Case of Combined POEMS Syndrome and Multiple Myeloma with Positive M protein Only on Immunofixation. Korean J Hematol 2008. [DOI: 10.5045/kjh.2008.43.4.253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Jae Hoon Yang
- Division of Internal Medicine, Hangang Sacred Heart Hospital, Seoul, Korea
| | - Joo Young Jung
- Division of Internal Medicine, Hangang Sacred Heart Hospital, Seoul, Korea
| | - Chan-Soo So
- Division of Internal Medicine, Hangang Sacred Heart Hospital, Seoul, Korea
| | - Yu Jin Lim
- Division of Internal Medicine, Hangang Sacred Heart Hospital, Seoul, Korea
| | - Seung-Yong Han
- Division of Internal Medicine, Hangang Sacred Heart Hospital, Seoul, Korea
| | - Sarah Park
- Division of Internal Medicine, Hangang Sacred Heart Hospital, Seoul, Korea
| | - Jung Han Kim
- Division of Internal Medicine, GangNam Sacred-heart Hospital, Seoul, Korea
| | - Mina Hur
- Division of Laboratory Medicine, Hangang Sacred Heart Hospital, Seoul, Korea
| | - Gyung Kyu Lee
- Division of Radiology, Hangang Sacred Heart Hospital, Seoul, Korea
| | - Jung-Weon Shim
- Division of Pathology, Hangang Sacred Heart Hospital, Seoul, Korea
| | - Young Iee Park
- Division of Internal Medicine, National Medical Center, Seoul, Korea
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169
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Song EY, Hur M, Lee KM, Yun Y, Lee CH, Choi YS, Lee KA, Roh EY. Comparison of VERSANT Hepatitis B virus DNA 3.0 Assay with Digene Hybrid Capture II Hepatitis B virus DNA test in relation to clinical status of Hepatitis B virus. Korean J Lab Med 2007; 27:451-7. [PMID: 18160836 DOI: 10.3343/kjlm.2007.27.6.451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Some differences exist among various Hepatitis B virus (HBV) DNA quantification assays due to lack of standardization and besides clinical usefulness has not been firmly elucidated in Korean HBV patients. METHODS We compared Bayer VERSANT HBV DNA 3.0 Assay (VERSANT 3.0) with Digene Hybrid Capture II HBV DNA Test (HC-II) according to HBeAg status and ALT levels in 232 HBV-infected Korean patients. One hundred and seventeen sera with undetectable DNA levels by HC-II were further analyzed by Real-Q HBV quantification assay (BioSewoom). RESULTS Although VERSANT 3.0 and HC-II showed an excellent correlation (r=0.9739), the results (copies/mL) by VERSANT 3.0 were 0.45 log(10) higher than those by HC-II. HBV DNA levels were higher in HBeAg-positive group than in HBeAg-negative group (P=0.002), and in abnormal ALT group than in normal ALT group (P<0.0001). The detection rate of HBV DNA by VERSANT 3.0 was lower in HBeAg-negative and normal ALT group (n=68) than in HBeAg-positive or abnormal ALT group (n=164) (35.3% vs 89.6%, P<0.0001). Fifty two sera out of 61 sera with undetectable DNA by VERSANT 3.0 were measurable by Real-Q with mean value of 3.26 log(10) copies/mL. CONCLUSIONS VERSANT 3.0 and HC-II showed an excellent correlation, but a little difference (0.45 log10) existed. VERSANT 3.0 effectively measured clinically relevant HBV DNA levels in most HBV-infected patients in Korea. However, more sensitive assays are needed for patients with negative HBeAg and normal ALT to see the low copies of HBV DNA levels.
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Affiliation(s)
- Eun Young Song
- Department of Laboratory Medicine, Konkuk University College of Medicine, Seoul, Korea
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Chang JD, Yoo JH, Hur M, Lee SS, Chung YK, Lee CJ. Revision total hip arthroplasty for pelvic osteolysis with well-fixed cementless cup. J Arthroplasty 2007; 22:987-92. [PMID: 17920470 DOI: 10.1016/j.arth.2007.05.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2007] [Accepted: 05/31/2007] [Indexed: 02/01/2023] Open
Abstract
Treatment of pelvic osteolysis after total hip arthroplasty (THA) remains controversial. Clinical and radiographic outcomes of revision THA were evaluated in 62 hips with pelvic osteolysis and well-fixed cementless cups. The patients' mean age was 50.9 years, and the mean interval from primary to revision THA was 9.7 years. For revision, cementless cups were used in 51 hips, and cemented cups in 11 with acetabular reinforcement rings in 9. The mean duration of follow-up after revision THA was 5.9 years (range, 3.0-9.7 years). At final follow-up, the average Harris Hip Score was 92.4, and there was no radiographic complication except for 1 with change of inclination. Revision THA for pelvic osteolysis with well-fixed cementless cups showed favorable outcomes, and it can be preferentially used in young patients.
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Affiliation(s)
- Jun-Dong Chang
- Department of Orthopaedic Surgery, Hallym University College of Medicine, Seoul, Republic of Korea
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171
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Hur M, Park JY, Cho HC, Lee KM, Shin HY, Cho HI. Methylenetetrahydrofolate reductase A1298C genotypes are associated with the risks of acute lymphoblastic leukaemia and chronic myelogenous leukaemia in the Korean population. ACTA ACUST UNITED AC 2006; 28:154-9. [PMID: 16706930 DOI: 10.1111/j.1365-2257.2006.00769.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Methylenetetrahydrofolate reductase (MTHFR) is a key enzyme involved in folate metabolism, DNA methylation and synthesis. We investigated the association between MTHFR polymorphisms and the risks of acute and chronic leukaemias. MTHFR C677T and A1298C were genotyped in 396 Korean individuals using multiplex polymerase chain reaction/restriction fragment-length polymorphism. They were acute lymphoblastic leukaemia (ALL, n = 89), acute myeloid leukaemia (AML, n = 55), biphenotypic acute leukaemia (n = 12), chronic myelogenous leukaemia (CML, n = 40), and normal controls (n = 200). C677T genotypes were not associated with the risk of each disease. A1298C variants, however, significantly decreased the risks of ALL and CML compared with 1298AA. Odds ratios and 95% confidence intervals of 1298AC and 1298AC + CC were 0.53 (0.31-0.93) and 0.54 (0.31-0.93) in ALL, and 0.34 (0.14-0.80) and 0.40 (0.18-0.89) in CML, respectively, compared with 1298AA. These findings demonstrate that the development of ALL and CML is more dependent on folate status, and more susceptible to DNA instability than that of AML. In addition, A1298C rather than C677T may be a more important genetic risk modifier in leukaemogenesis at least in the Korean population.
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MESH Headings
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Child
- Child, Preschool
- Confidence Intervals
- Female
- Folic Acid/metabolism
- Gene Frequency/physiology
- Humans
- Infant
- Korea
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/enzymology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myeloid, Acute/enzymology
- Leukemia, Myeloid, Acute/genetics
- Male
- Methylenetetrahydrofolate Reductase (NADPH2)/genetics
- Middle Aged
- Polymorphism, Genetic/genetics
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/enzymology
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/genetics
- Retrospective Studies
- Risk Assessment
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Affiliation(s)
- M Hur
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, Korea
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172
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Kang HJ, Ki CS, Kim YS, Hur M, Jang SI, Min KS. Two Mutations of the C7 Gene, c.1424G > A and c.281-1G > T, in Two Korean Families. J Clin Immunol 2006; 26:186-91. [PMID: 16552475 DOI: 10.1007/s10875-006-9006-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2005] [Accepted: 11/22/2005] [Indexed: 10/24/2022]
Abstract
Complement C7 deficiency is associated with increased susceptibility to meningococcal infection. The genetic alterations of C7 deficiency are known to be sporadic and heterogeneous worldwide. We investigated molecular basis of C7 deficiency in two unrelated Korean families, in which the index cases suffered from meningococcal meningitis. Exon-specific PCR and direct sequencing of the C7 gene revealed two different mutations: c.1424G > A and c.281-1G > T. In family 1, index case and her brother revealed a homozygous mis-sense mutation (c.1424G > A), a novel mutation, which results in the change of cysteine to tyrosine (C475Y) in exon 10. Index case in family 2 was found to be a homozygote carrying point mutation at the 3' splice acceptor site of intron 3 (c.281-1G > T), which was previously reported in a Korean C7-deficient subject.
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Affiliation(s)
- Hee Jung Kang
- Department of Laboratory Medicine, Hallym University College of Medicine, Anyang, South Korea.
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173
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Abstract
Macrophage activation syndrome (MAS) is a rare and potentially fatal complication of rheumatic disorders in children. We describe a 13-month-old boy in whom MAS developed as a complication of systemic juvenile rheumatoid arthritis (S-JRA). He suffered from fever and generalized rash followed by multiple joints swelling for four months before admission. Physical examination revealed cervical lymphadenopathy and hepatosplenomegaly. Laboratory findings were: abnormal liver enzymes, increased triglyceride and ferritin levels, coagulopathies resembling disseminated intravascular coagulation, anemia and thrombocytopenia. Hyperplasia of hemophagocytic macrophages was remarkable in his bone marrow. Methylprednisolone and cyclosporin therapy resulted in clinical and laboratory improvements. This is the third case of MAS associated with S-JRA in Koreans, and the first one, in which hemophagocytic macrophages were proven in bone marrow.
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Affiliation(s)
- Mina Hur
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, Korea
| | - Young Chul Kim
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, Korea
| | - Kyu Man Lee
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, Korea
| | - Kwang Nam Kim
- Department of Pediatrics, Hallym University College of Medicine, Seoul, Korea
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174
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Chang JD, Lee SS, Hur M, Seo EM, Chung YK, Lee CJ. Revision total hip arthroplasty in hip joints with metallosis: a single-center experience with 31 cases. J Arthroplasty 2005; 20:568-73. [PMID: 16309990 DOI: 10.1016/j.arth.2005.04.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2004] [Accepted: 04/04/2005] [Indexed: 02/01/2023] Open
Abstract
Clinical and radiographic findings of metallosis in relation to the clinical outcome of revision total hip arthroplasty were analyzed for 31 hips. Causes of metallosis were dissociation of polyethylene liner in 24 hips, catastrophic wear in 6, and the screw used for stem fixation in 1. Metallosis was grade I in 12 hips, grade II in 7, and grade III in 12. Osteolysis around the acetabular cup was observed in 24 (77.4%) of 31 hips. At the time of final follow-up evaluation, none of the hips showed osteolysis, acetabular cup migration, or any change in inclination. Although metallosis could not be completely eradicated in severe cases, the clinical outcome for these hips was favorable. This study demonstrates that metallosis frequently causes osteolysis and that complete elimination of it is not a prerequisite for the success of revision total hip arthroplasty.
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Affiliation(s)
- Jun-Dong Chang
- Department of Orthopaedic Surgery, Hangang Sacred Heart Hospital, Hallym University College of Medicine, Youngdungpo-gu, Seoul, Republic of Korea
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175
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Hur M, Song H, Ko S, Lee H, Kang S, Cho B, Lee K, Lee J. P22 Breast cancer screening of Korean women. Breast 2005. [DOI: 10.1016/s0960-9776(05)80061-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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176
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Hur M, Lee YK, Lee KM, Kim HJ, Cho HI. Pseudobasophilia as an erroneous white blood cell differential count with a discrepancy between automated cell counters: report of two cases. ACTA ACUST UNITED AC 2004; 26:287-90. [PMID: 15279666 DOI: 10.1111/j.1365-2257.2004.00615.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
We report two cases that showed erroneous white blood cell differential counts by automated cell counters. Each case showed an interesting discrepancy of differential count between cell counters, and marked pseudobasophilia was observed by one of the two counters. The first patient was a 44-year-old female who suffered from multiple myeloma for more than one and a half years. Increased myeloma cells (43%) in peripheral blood were counted as basophils by the ADVIA 120, and as monocytes by SE-9000, respectively. The second patient was a 72-year-old female diagnosed as having chronic myelomonocytic leukemia. Dysgranulopoietic neutrophils (50%) and monocytes (31%) were increased in the peripheral blood. Dysgranulopoietic neutrophils were counted as basophils by STKS. In contrast, about half of the increased monocytes were counted as neutrophils by the ADVIA 120. These interesting findings highlight the importance of microscopic examination of the blood film in routine laboratory practice, and automated cell counters, especially for the hematologic patients, cannot completely substitute for it. These results also imply that at least some subpopulations with different membrane or cytoplasmic properties may exist even in the similarly classified cells.
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Affiliation(s)
- M Hur
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, Korea
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177
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Hur M, Lee KM, Cho HC, Park YI, Kim SH, Chang YW, Kim YR, Cho HI. Protein 4.1 deficiency and deletion of chromosome 20q are associated with acquired elliptocytosis in myelodysplastic syndrome. ACTA ACUST UNITED AC 2004; 26:69-72. [PMID: 14738441 DOI: 10.1111/j.0141-9854.2003.00583.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a case of myelodysplastic syndrome (MDS), associated with prominent elliptocytosis. A 66-year-old male presented with peripheral pancytopenia, and was diagnosed with MDS [refractory anaemia (RA)]. Apart from marked elliptocytosis, dyshaematopoietic features were not evident in his peripheral blood or hypercellular bone marrow. After 18 months, he had progressed to RA with excess blasts in transformation. Analysis of red blood cell membrane proteins by sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) showed a reduced quantity of protein 4.1 (30% of control). Deletion of chromosome 20q was identified by conventional cytogenetic analysis and fluorescence in situ hybridization. Marked elliptocytosis, persistent for more than 17 months, decreased strikingly after chemotherapy with idarubicin and Ara-C. These findings suggest that acquired elliptocytosis occurred as an unusual morphological feature of MDS, associated with abnormalities of protein 4.1 and chromosome 20q.
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Affiliation(s)
- M Hur
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, Korea
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178
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Kang HJ, Kim JH, Lee EH, Lee YK, Hur M, Lee KM. Change of complement system predicts the outcome of patients with severe thermal injury. J Burn Care Rehabil 2003; 24:148-53. [PMID: 12792234 DOI: 10.1097/01.bcr.0000066791.85810.bc] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
To establish the clinical relevance of the changes in the complement system in patients with thermal injury, we studied 20 patients who had third-degree burns on more than 60% of total body surface area. Their levels of the C3, C4, soluble C5b-9, and functional hemolytic activities of total (CH50) and alternative (AH50) complement pathways were sequentially measured for 2 weeks after thermal injury. All patients showed low C3 levels initially but increased C3 levels in the following days. The increasing trend of C3 levels was prominent in survivors but transient and diminished in nonsurvivors. The change of levels of C3, CH50, and AH50 was closely associated with one another, and their chronological trends related to the survival of patients (P =.0060,.0064 and.0066, respectively). The recovery of C3, AH50, and CH50 to normal or supranormal level during the early treatment period relates to the survival of patients with thermal injury. The failure of recovery of the complement system indicates a poor prognosis for patients and the monitoring of complement system might be beneficial in the care of patients with thermal injury.
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Affiliation(s)
- H J Kang
- Department of Laboratory Medicine, Hallym University College of Medicine, Gyenggi-do, Korea
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179
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Hur M, Song EY, Kang SH, Shin DH, Kim JY, Park SS, Cho HI. Lymphoid preponderance and the absence of basophilia and splenomegaly are frequent in m-bcr-positive chronic myelogenous leukemia. Ann Hematol 2002; 81:219-23. [PMID: 11976825 DOI: 10.1007/s00277-002-0433-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2001] [Accepted: 01/07/2002] [Indexed: 10/27/2022]
Abstract
Chronic myelogenous leukemia (CML) with a minor bcr-abl transcript is a rare entity. We describe a 66-year-old female who was diagnosed with CML in the chronic phase. Molecular analysis of her Philadelphia chromosome using the reverse transcriptase polymerase chain reaction and subsequent sequencing revealed a minor bcr-abl transcript. Monocytosis resembling chronic myelomonocytic leukemia was observed without splenomegaly and basophilia. Her clinical course was indolent and maintained the chronic phase of CML for nearly 3 years under hydroxyurea treatment. A review of the 23 cases of m-bcr CML including this case showed the presence of monocytosis and the absence of basophilia and splenomegaly in 55.0%, 55.0%, and 70.0% of patients, respectively. The absence of basophilia was a significant finding in patients without monocytosis ( P=0.01). Although the hematological features or clinical outcomes were variable in m-bcr CML cases, all three cases at the onset of the blastic phase showed lymphoid crisis, implying an increased lymphoid leukemogenicity of minor bcr-abl transcripts.
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MESH Headings
- Aged
- Basophils/cytology
- Female
- Fusion Proteins, bcr-abl/genetics
- Humans
- Hydroxyurea/administration & dosage
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/blood
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Leukocytosis/blood
- Monocytes/cytology
- Polymerase Chain Reaction
- RNA, Messenger/analysis
- Splenomegaly
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Affiliation(s)
- M Hur
- Department of Clinical Pathology, Seoul National University College of Medicine, Korea
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180
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Abstract
We have investigated the frequencies of HLA-B*44 alleles and their haplotypic associations with HLA-A, -C, and -DRB1 loci in 450 healthy unrelated Koreans, including 213 parents from 107 families. All 79 samples (17.6%) typed as B44 by serology were analyzed for B*44 alleles using polymerase chain reaction (PCR) single-strand conformation polymorphism (SSCP) method. A total of three different B*44 alleles were detected: B*44031 (allele frequency 4.7%), B*44032 (3.1%), and B*4402 (1.3%). Three characteristic haplotypes revealing strong linkage disequilibrium were A*3303-Cw*1403-B*44031-DRB1*1302 (3.6%), A*3303-Cw*07-B*44032-DRB1*0701 (2.8%), and A*3201-Cw*05-B*4402-DRB1*0405 (0.4%). In addition, a strong association was observed for B*4402 with A*0301. The B*4403-bearing haplotypes of Koreans appear to be relatively common in Asian populations, whereas the B*4402-bearing haplotypes share some similarity to those of Caucasians. HLA-B44 alleles demonstrate a limited allelic diversity and comprise distinctive extended haplotypes in the Korean population. It is suggested that the frequencies of B44 subtype mismatches among ABDRB1-matched unrelated donor-recipient pairs would be low in this population.
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Affiliation(s)
- E Y Song
- Department of Clinical Pathology, Seoul National University College of Medicine, Seoul, South Korea
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181
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Abstract
To gain more insight into the immunophenotypic and cytogenetic changes in acute leukaemia at relapse, 99 Korean patients treated at a single institution were studied: acute myelogenous leukaemia (AML, n=46), acute lymphoblastic leukaemia (ALL, n=44) and biphenotypic and mixed leukaemia (n=9). Immunophenotypic changes at relapse were observed in 51 of 99 patients (51.5%) with almost even distribution in AML and ALL. Overall expression of aberrant markers on leukaemic cells was more frequent at relapse than at initial diagnosis (P < 0.05), and this finding was most prominent in B lineage ALL (41.4% versus 10.3%, P=0.007). Gain of aberrant CD13 or CD33 at relapse of B lineage ALL was most frequently observed. Cytogenetic changes at relapse were observed in 28 of 46 patients (60.8%). The initially abnormal karyotypes were more frequently associated with clonal changes at relapse compared to initially normal karyotypes (78.3% versus 43.5%, P=0.016). Cytogenetic changes were more frequent in B lineage ALL than in AML (90% versus 47.8%, P=0.05). In ALL, patients showing cytogenetic changes at relapse were significantly younger than those showing no changes (mean age of 15.0 versus 38.8, P=0.002), whereas in AML there was no significant difference between the two groups. In conclusion, the gain of aberrant markers and cytogenetic changes at relapse, which are suggestive of clonal instability, are more prevalent in B lineage ALL compared to AML, and lymphoid leukaemic cells of younger patients are more susceptible to clonal changes at relapse.
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Affiliation(s)
- M Hur
- Department of Clinical Pathology, Seoul National University College of Medicine, Seoul, Korea
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182
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Lee YK, Cho HI, Park SS, Lee YJ, Ra E, Chang YH, Hur M, Shin HY, Ahn HS. Abnormalities of erythrocyte membrane proteins in Korean patients with hereditary spherocytosis. J Korean Med Sci 2000; 15:284-8. [PMID: 10895969 PMCID: PMC3054639 DOI: 10.3346/jkms.2000.15.3.284] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Hereditary spherocytosis (HS) is a common inherited erythrocyte membrane disorder characterized by chronic hemolytic anemia. Clinical manifestations and biochemical abnormalities of HS are heterogeneous. In this study, we investigated erythrocyte membrane protein defects in 27 Korean HS cases. Utilizing both the Fairbanks system and the Laemmli system, sodium dodecyl sulfate polyacrylamide gel electrophoresis of erythrocyte membrane proteins was performed. Proteins were stained with Coomassie brilliant blue and gels were scanned using a densitometer. We detected spectrin deficiency in 7.4% of cases (2/27), ankyrin deficiency in 29.6% (8/27), combined spectrin and ankyrin deficiency in 3.7% (1/27), band 3 deficiency in 11.1% (3/27) and protein 4.2 deficiency in 14.8% (4/27). Membrane protein deficiencies were not observed in nine cases (33.3%, 9/27). Members of two of seven families tested showed the same protein defects as the proband. Ankyrin deficiency alone and combined with spectrin deficiency accounted for 33.3% of cases (9/27), and they were the most common biochemical defects in Korean HS cases. Protein 4.2 deficiency caused HS more frequently in Koreans than in Caucasians.
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Affiliation(s)
- Y K Lee
- Department of Clinical Pathology, Seoul National University College of Medicine, Korea
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183
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Whang DH, Kim HC, Hur M, Choi JH, Park JS, Han KS. A successful delivery of a baby from a D--/D-- mother with strong anti- Hr0. Immunohematology 2000; 16:112-4. [PMID: 15373619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
We describe the first reported case in Korea of a woman with a D--/ D-- phenotype, a high-titer anti-Hr0, and the successful delivery of her newborn. The mother had a history of spontaneous abortion and artificial termination. In her third pregnancy, a live infant was delivered, but died of severe hemolytic disease of the newborn due to anti- Hr0 in spite of intensive medical intervention. In her fourth pregnancy, at 22 weeks gestation, the titer of anti- Hr0 was 1024, fetal cells were direct antiglobulin test positive and the blood type was group O, D+ (CDe). We performed plasma exchanges in the mother; however, the titer of antibody rebounded to its initial level after the third plasma exchange. At 26 weeks gestation, cord blood Hb decreased to 7.1 g/dL and three intrauterine transfusions were performed using the mother's washed red blood cells (RBCs). At 34 weeks gestation, a live baby was delivered by cesarean section. The infant was hydropic with hyperbilirubinemia and severe anemia. However, after two exchange transfusions using the washed RBCs of the mother's sister, who was also D--/D--, laboratory and clinical findings returned to normal.
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Affiliation(s)
- D H Whang
- Department of Clinical Pathology, Seoul National University College of Medicine, Seoul, Korea
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184
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Affiliation(s)
- Y H Chang
- Department of Clinical Pathology, Seoul National University College of Medicine, Korea
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185
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Abstract
Combination chemotherapy and radiation therapy have contributed to the successful treatment of various cancer patients. But the development of second malignancies is an inevitable complication of long-term cytotoxic treatment. The most serious and frequent of such complications is acute myelogenous leukemia (AML). Therapy-related leukemia is generally fatal. Since the number of patients exposed to chemotherapy is increasing each year, the clinical significance of this entity cannot be underestimated. There have been many investigations of therapy-related leukemia, but in Korea published reports are rare. We describe four such cases, involving one older female with lung cancer and three children with acute lymphoblastic leukemia (ALL) and malignant lymphoma. Alkylating agents were used for chemotherapy, and in one case, topoisomerase II inhibitor. Irrespective of the causative agents, the latency periods were relatively short, and despite induction chemotherapy in two, all survived for only a few months. During the follow-up of patients treated for primary malignancies, the possibility of therapy-related leukemia should always be borne in mind.
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MESH Headings
- Adolescent
- Aged
- Antineoplastic Agents, Alkylating/adverse effects
- Antineoplastic Agents, Alkylating/therapeutic use
- Carcinoma, Small Cell/drug therapy
- Carcinoma, Small Cell/radiotherapy
- Child
- Fatal Outcome
- Female
- Humans
- Leukemia, Monocytic, Acute/etiology
- Leukemia, Myeloid, Acute/etiology
- Leukemia, Myelomonocytic, Acute/etiology
- Lung Neoplasms/drug therapy
- Lung Neoplasms/radiotherapy
- Lymphoma, B-Cell/drug therapy
- Lymphoma, B-Cell/radiotherapy
- Male
- Neoplasms, Second Primary/etiology
- Precursor Cell Lymphoblastic Leukemia-Lymphoma/drug therapy
- Topoisomerase II Inhibitors
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Affiliation(s)
- M Hur
- Department of Clinical Pathology, Seoul National University College of Medicine, Korea
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186
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Kim DH, Bae DH, Hur M, Kim SH. Comparison of classic intrafascial supracervical hysterectomy with total laparoscopic and laparoscopic-assisted vaginal hysterectomy. J Am Assoc Gynecol Laparosc 1998; 5:253-60. [PMID: 9668147 DOI: 10.1016/s1074-3804(98)80028-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
STUDY OBJECTIVE To evaluate the efficacy of laparoscopic hysterectomy and compare classic intrafascial supracervical hysterectomy (CISH) with total laparoscopic hysterectomy (TLH) and laparoscopic-assisted vaginal hysterectomy (LAVH). DESIGN Retrospective review (Canadian Task Force classification II-2). SETTING University-affiliated hospital. PATIENTS Six hundred fifty women who underwent laparoscopic hysterectomy from August 1993 to August 1996. INTERVENTIONS Charts of 231 women undergoing CISH, 102 TLH, and 317 LAVH were reviewed regarding patient characteristics, indications, uterine weight, associated procedures, estimated blood loss, operating time, and complications. MEASUREMENTS AND MAIN RESULTS Among the three groups, despite having the largest specimen weight and highest number of associated procedures, women undergoing CISH had the lowest complication rate and smallest amount of estimated blood loss (p <0.05). The next lowest was the TLH group (p <0.05). Although LAVH was associated with shortest operating time, there were no statistically significant differences among groups (p >0.05). The CISH group had relatively shorter operating times when compared with similar average specimen weights. Patients who underwent total hysterectomy by either TLH or LAVH had more postoperative visits than those having CISH (p <0.05, Fisher's exact test); the LAVH group had the highest number of postoperative visits. The overall complication rate appeared to be highest in the LAVH group (p <0.05, Fisher's exact test). CONCLUSION Among the three groups, CISH resulted in lowest blood loss and fewest complications; these values were also lower for TLH than for LAVH. If the cervix is removed along with the uterus, TLH is recommended. In our opinion, CISH is preferred in cases of benign uterine diseases because it lowers major operative complications, especially in women who have large masses with no pathologic lesions of the cervix.
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Affiliation(s)
- D H Kim
- Department of Obstetrics and Gynecology, Chung-Ang University, Pil-Dong Hospital, 82-1, 2Ga, Pil-Dong, Chung-Gu, Seoul, Korea
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187
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Hur M, Geese WJ, Waring RB. Self-splicing activity of the mitochondrial group-I introns from Aspergillus nidulans and related introns from other species. Curr Genet 1997; 32:399-407. [PMID: 9388295 DOI: 10.1007/s002940050294] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The mitochondrial genome of Aspergillus nidulans contains several group-I introns. Each one has been assayed for its ability to self-splice in vitro in the absence of proteins. The intron from the apocytochrome b gene is unusual among subgroup IB4 introns in being able to self-splice, unlike a similar intron from Saccharomyces cerevisiae. The first intron in the cytochrome oxidase subunit-1 gene self-splices but only correctly completes the first step of splicing; cryptic 3' splice-sites are recognized instead and these are also used at a low frequency in vivo. The highly homologous intron from Podospora anserina completes both steps in vitro. The remaining introns do not self-splice. The correlation between subgroup category, the likely presence of specific tertiary interactions, and self-splicing activity is discussed.
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Affiliation(s)
- M Hur
- Department of Biology, Temple University, Philadelphia, PA 19122, USA
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Hur M, Kim JH, Moon JS, Lee JC, Seo DW. Laparoscopically assisted vaginal hysterectomy. J Reprod Med 1995; 40:829-33. [PMID: 8926611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To report our experience with laparoscopically assisted vaginal hysterectomy (LAVH) and evaluate the advantages of LAVH. STUDY DESIGN From January 1991 to August 1992, 176 LAVHs were performed at the Department of Obstetrics and Gynecology, College of Medicine, Chung-Ang University, Seoul, Korea. The indications for LAVH, based on the preoperative diagnosis, were uterine myomas, dysmenorrhea, chronic pelvic inflammatory disease or pelvic pain, dysfunctional uterine bleeding and cervical intraepithelial neoplasia (in order of frequency). RESULTS Patients had concomitant procedures, including incidental appendectomy, posterior wall repair, pelvic adhesiolysis and salpingo-oophorectomy. Bipolar forceps were used to compress and desiccate vessels. The Nd-YAG laser, scissors and/or unipolar electrode were used for tissue division, excision of adhesions and cutting. The intraoperative complications were bladder perforation, massive hemorrhage and inferior epigastric vessel injury (one case each). The postoperative complications were infection, voiding difficulty, febrile morbidity, pelvic abscess, incisional hernia, vaginal vault bleeding and peroneal nerve palsy (one case each). CONCLUSION Hysterectomy can be safely performed vaginally assisted by operative laparoscopy by well-trained laparoscopists, resulting in reduced surgical morbidity, blood loss, postoperative discomfort, recovery time and hospitalization.
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Affiliation(s)
- M Hur
- Department of Obstetrics and Gynecology, Chung-Ang University, Seoul, Korea
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Hur M, Waring RB. Two group I introns with a C.G basepair at the 5' splice-site instead of the very highly conserved U.G basepair: is selection post-translational? Nucleic Acids Res 1995; 23:4466-70. [PMID: 7501471 PMCID: PMC307405 DOI: 10.1093/nar/23.21.4466] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
In virtually all of the 200 group I introns sequenced thus far, the specificity of 5' splice-site cleavage is determined by a basepair between a uracil base at the end of the 5' exon and a guanine in an intron guide sequence which pairs with the nucleotides flanking the splice-site. It has been reported that two introns in the cytochrome oxidase subunit I gene of Aspergillus nidulans and Podospora anserina are exceptions to this rule and have a C.G basepair in this position. We have confirmed the initial reports and shown for one of them that RNA editing does not convert the C to a U. Both introns autocatalytically cleave the 5' splice-site. Mutation of the C to U in one intron reduces the requirement for Mg2+ and leads to an increase in the rate of cleavage. As the C base encodes a highly conserved amino acid, we propose that it is selected post-translationally at the level of protein function, despite its inferior splicing activity.
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Affiliation(s)
- M Hur
- Department of Biology, Temple University, Philadelphia, PA 19122, USA
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