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Han SH, Jung SM, Park SR, Chung SY, Han H. Identification of a new HLA-DRB1*14 variant, HLA-DRB1*1478, in a Korean individual. ACTA ACUST UNITED AC 2009; 73:81-3. [PMID: 19140840 DOI: 10.1111/j.1399-0039.2008.01175.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report the identification of novel allele HLA-DRB1*1478 that was found during routine high-resolution sequence-based typing of the cord blood unit in Korean population. The DRB1*1478 allele shows two nucleotide differences from DRB1*1463 in exon 2 at nucleotide position 344 (G-->T) and 345 (T-->G), resulting in an amino acid change, Gly86Val.
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302
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Han SH, Chin BS, Lee HS, Jeong SJ, Choi HK, Kim CO, Yong D, Choi JY, Song YG, Lee K, Kim JM. Vancomycin-resistant enterococci bacteremia: Risk factors for mortality and influence of antimicrobial therapy on clinical outcome. J Infect 2009; 58:182-90. [DOI: 10.1016/j.jinf.2009.01.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2008] [Revised: 01/28/2009] [Accepted: 01/28/2009] [Indexed: 10/21/2022]
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303
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Choi JY, Song YG, Kim YH, Kim CO, Kim MS, Chin BS, Han SH, Choi SH, Lee HS, Jeong SJ, Choi H, Kim JM. Factors associated with HIV-1 proviral DNA loads in patients with undetectable plasma RNA load. J Korean Med Sci 2009; 24:152-4. [PMID: 19270829 PMCID: PMC2650966 DOI: 10.3346/jkms.2009.24.1.152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2007] [Accepted: 11/11/2008] [Indexed: 12/02/2022] Open
Abstract
To evaluate factors associated with human immunodeficiency virus type 1 (HIV-1) proviral DNA load, we conducted a cross-sectional study of 36 chronically HIV-1-infected individuals with undetectable plasma viral RNA. We used real-time polymerase chain reaction to determine the number of HIV-1 proviral DNA copies per 10(6) peripheral blood mononuclear cells. The mean level of plasma viral RNA when the CD4+ T cell count was above 500 cells/microL without highly active antiretroviral therapy (HAART) was significantly associated with proviral DNA load at the time of undetectable plasma HIV RNA with HAART. Strategies to reduce the level of plasma viral RNA when patients' CD4+ T cell counts are above 500 cells/microL without HAART could help reduce HIV-1 proviral DNA load.
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304
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Kang DI, Hwang MJ, Han SH, Yang JE. Approximate formulas for treating asymmetrical common cause failure events. NUCLEAR ENGINEERING AND DESIGN 2009. [DOI: 10.1016/j.nucengdes.2008.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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305
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Baek JH, Park EY, Jung YS, Hong JW, Chae Y, Jin SJ, Choi HK, Shin SY, Han SH, Chin BS, Kim CO, Choi JY, Song YG, Cho NH, Kim JM. Recurrent Coccidioidomycosis Manifesting as Osteomyelitis in Korea. Infect Chemother 2009. [DOI: 10.3947/ic.2009.41.4.253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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306
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Abstract
Infiltration of sarcoid granuloma in old cutaneous scars is one of the uncommon cutaneous manifestations of sarcoidosis. Here, we report the case of a 47-year-old female who presented with swelling and irritation in 5 old scars. She had acquired these scars 9 years ago in a traffic accident. An incisional scar biopsy revealed noncaseating granulomas consistent with sarcoidosis. High-resolution CT (HRCT) revealed right paratracheal, both hilar, paraaortic, and subcarinal lymphadenopathy without any nodular densities in both lung fields. Successful regression of cutaneous inflammation was achieved using a short course of oral steroids.
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307
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Seo Y, Choi CS, Han SH, Han SJ. Real-time atomic force microscopy using mechanical resonator type scanner. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2008; 79:103703. [PMID: 19044715 DOI: 10.1063/1.2999579] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The real-time atomic force microscope for biological sample is a challenging research field. We have demonstrated a real-time atomic force microscope by implementing a mechanical resonator type scanner called by "microscanner" The microscanner was designed to have a resonance frequency in the range of 5-10 kHz and an amplitude of 1-3 microm. The resonant vibration of the microscanner was served as a fast-scan directional motion, and an image acquisition rate of 30 frames/s with 256x256 pixels per frame was achieved. Time-varying sequential images of a poly(ethylene-oxide) sample were taken as a demonstration of potential for excellence in real-time imaging a moving nano-object.
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308
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Kang WC, Ahn TH, Moon CI, Han SH, Shin EK, Kim JS, Ko YG, Choi D, Jang Y, Kim BK, Oh SJ, Jeon DW, Yang JY. Comparison of inflammatory markers and angiographic outcomes after implantation of sirolimus and paclitaxel-eluting stents. Heart 2008; 95:970-5. [PMID: 18772180 DOI: 10.1136/hrt.2008.153114] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVE We compared the degree of systemic inflammation and its relation to the angiographic outcomes after drug-eluting stent (DES) implantations. METHODS We implanted a single DES in 79 stable angina patients (50 men; 60.4 (9.5) years of age; sirolimus-eluting stent (SES), n = 38; paclitaxel-eluting stent (PES), n = 41). The high-sensitivity C-reactive protein (hs-CRP) and interleukin 6 (IL-6) levels were determined before and at 24 hours, 72 hours, and 4 weeks after the percutaneous coronary intervention (PCI). An angiography and intravascular ultrasound (IVUS) were performed. RESULTS The hs-CRP and IL-6 levels at baseline did not differ between the two groups. The hs-CRP increased significantly from baseline at 24 hours and 72 hours after the PCI in both groups and there was a significant increase in the IL-6 level at 24 hours after the PCI in both groups. However, there was no significant difference between the two groups in any of the hs-CRP or IL-6 measurements. At follow-up, the late lumen loss was significantly higher in the PES group than in the SES group (0.57 (0.56) mm vs 0.28 (0.58) mm, respectively, p = 0.020). The neointimal hyperplasia (NIH) volume in the PES group was significantly higher than that in the SES group (23.1 (22.7) vs 3.8 (7.1) mm(3), respectively, p = 0.000). The percentage luminal volume reduction was higher in the PES group than in the SES group (18.9 vs 3.9%, p = 0.002). The absolute values or change in the inflammatory markers did not correlate with the NIH or stent volume reduction. CONCLUSIONS Our study showed that the benefits obtained from the SES, which reduce neointimal proliferation, are not probably mediated by the attenuation of the systemic inflammatory markers hs-CRP or IL-6.
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309
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Choi H, Jeong SJ, Lee HS, Chin BS, Choi SH, Han SH, Kim MS, Kim CO, Choi JY, Song YG, Kim JM. Two cases of multidrug-resistant human immunodeficiency virus infection treated with atazanavir and lopinavir/ritonavir combination therapy. J Korean Med Sci 2008; 23:737-9. [PMID: 18756069 PMCID: PMC2526394 DOI: 10.3346/jkms.2008.23.4.737] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
The combination of atazanavir (ATV) and lopinavir/ritonavir (LPV/RTV) with nucleoside reverse transcriptase inhibitors (NRTI) has been used as a salvage regimen for human immunodeficiency virus (HIV)-positive patients. In this paper, we discuss two cases of HIV-positive patients who had long histories of virological failure following a heavy treatment of antiretroviral drugs, but then achieved virological suppression with double-boosted protease inhibitor (PI) regimens. In patients with multiple genotypic resistance to PIs and NRTIs, virological suppression can be achieved with a combination of ATV plus LPV/RTV with an NRTI backbone. The two cases in this report suggest that a combination of ATV plus LPV/RTV could be a useful salvage regimen for the subset of HIV-positive patients with limited treatment options.
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310
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Moon WJ, Kim HJ, Roh HG, Oh J, Han SH. Diffusion tensor imaging and fiber tractography in Parry-Romberg syndrome. AJNR Am J Neuroradiol 2008; 29:714-5. [PMID: 18202229 DOI: 10.3174/ajnr.a0967] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We report a case of Parry-Romberg syndrome in a 32-year-old woman presenting with intermittent headache and mild sensory disturbance. MR imaging revealed minimal asymmetric atrophy of the right hemisphere with a few nonspecific white matter hyperintensities. Diffusion tensor imaging and fiber tractography, however, demonstrated clear fiber derangement, especially in the sensory tract of the right cerebral white matter.
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311
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Ji S, Kim Y, Min BM, Han SH, Choi Y. Innate immune responses of gingival epithelial cells to nonperiodontopathic and periodontopathic bacteria. J Periodontal Res 2008; 42:503-10. [PMID: 17956462 DOI: 10.1111/j.1600-0765.2007.00974.x] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND OBJECTIVE We have previously reported different susceptibilities of periodontopathic and nonperiodontopathic bacteria to antimicrobial peptides and phagocytosis by neutrophils. Differences between the two groups of bacteria may exist also in their ability to induce immune responses from the host. Therefore, we evaluated the effects of various oral bacteria on innate immune responses by gingival epithelial cells. MATERIAL AND METHODS HOK-16B cells were cocultured with live or lysed nonperiodontopathic (n = 3) and periodontopathic (n = 5) bacterial species. The levels of human beta defensin-1, -2 and -3, and of the cathelicidin, LL-37, were examined by real-time reverse transcription-polymerase chain reaction, and the accumulated interleukin-8 and interleukin-1 alpha were measured by enzyme-linked immunosorbent assay. RESULTS Nonperiodontopathic bacteria up-regulated some antimicrobial peptides without affecting the levels of cytokines. In the periodontopathic group, the orange-complex bacteria induced antimicrobial peptides and interleukin-8 efficiently, but the red-complex bacteria often demonstrated suppressive effects. In contrast to live bacteria, bacterial lysates had no suppressive effects. In addition, some bacterial lysates demonstrated a reduced ability to induce antimicrobial peptides compared with live bacteria. CONCLUSION The nonperiodontopathic, the orange-complex, and the red-complex bacteria had different effects on the innate immune responses from gingival epithelial cells, which may affect the outcome of their host-microbial interaction in gingival sulcus.
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312
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Choi SH, Chin BS, Han SH, Lee HS, Kim CO, Jeong SJ, Choi HK, Kim MS, Choi JY, Song YG, Kim JM. Utility of QuantiFERON-TB In-Tube Test for Differentiating Active Tuberculosis from Latent Tuberculosis Infection in an Intermediate Burden Country. Infect Chemother 2008. [DOI: 10.3947/ic.2008.40.6.305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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313
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Cho CH, Choi JY, Han SH, Lee HS, Choi SH, Chin BS, Choi HK, Jeoung SJ, Kim MS, Kim CO, Kim CK, Yong D, Song YG, Lee K, Kim JM. Efficacy of the Arbekacin and Teicoplanin Combination on Glycopeptide Intermediate Staphylococcus aureus in a Rabbit Model of Endocarditis. Infect Chemother 2008. [DOI: 10.3947/ic.2008.40.2.102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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314
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Jung CH, Kim GW, Han SH, Lee YM. Gas separation of pyrolyzed polymeric membranes: Effect of polymer precursor and pyrolysis conditions. Macromol Res 2007. [DOI: 10.1007/bf03218832] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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315
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Kim YA, Choi JY, Kim CK, Kim CO, Kim MS, Choi SH, Chin BS, Han SH, Lee HS, Choi HK, Jeoung SJ, Song YG, Yum JH, Yong D, Lee K, Kim JM. Risk factors and outcomes of bloodstream infections with metallo-beta-lactamase-producing Acinetobacter. ACTA ACUST UNITED AC 2007; 40:234-40. [PMID: 17852898 DOI: 10.1080/00365540701633004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The spread of Gram-negative bacilli with acquired metallo-beta-lactamase (MBL) threatens the successful treatment of major nosocomial infections. The objective of this study was to evaluate the differences in the clinical characteristics of bacteremia caused by MBL-producing Acinetobacter species and MBL non-producing isolates. Two retrospective case-control studies were conducted using data on patients with Acinetobacter bacteremia, who were admitted between January 2001 and December 2005 at a 1500-bed, tertiary-care teaching hospital. Case group 1 (n=27) included patients from whom imipenem-resistant Acinetobacter was isolated in blood culture, and case group 2 (n=7) consisted of those patients from group 1 who yielded MBL-producing isolates. The control group (n=41) included patients from whom carbapenem-susceptible Acinetobacter isolates were isolated in blood culture. Multivariate analysis revealed that the independent risk factors for imipenem-resistant Acinetobacter bacteremia were neutropenia and prolonged use of carbapenem. The independent risk factors for MBL-producing Acinetobacter bacteremia were neutropenia and prolonged use of cephalosporins. The results of this study suggest that a prolonged use of cephalosporins may be associated with MBL-producing Acinetobacter bacteremia.
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316
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van Bommel EFH, Siemes C, van der Veer SJ, Han SH, Huiskes AWLC, Hendriksz TR. Clinical value of gallium-67 SPECT scintigraphy in the diagnostic and therapeutic evaluation of retroperitoneal fibrosis: a prospective study. J Intern Med 2007; 262:224-34. [PMID: 17645590 DOI: 10.1111/j.1365-2796.2007.01805.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Gallium-67 (67Ga) scintigraphy may be useful in evaluating patients with retroperitoneal fibrosis (RPF), but a systematic assessment of its value is lacking. OBJECTIVE Prospective evaluation of the value of 67Ga scintigraphy in assessing active RPF disease and in predicting treatment response. METHODS Thirty-four patients with nonmalignant RPF treated with tamoxifen underwent 67Ga scintigraphy at baseline and--if baseline gallium scan was positive--at 3 months follow-up. Gallium scans were visually scored according to pathologic 67Ga-uptake compared to normal bone marrow 67Ga-uptake. Results were correlated with other (follow-up) measurements. Value of (follow-up) 67Ga scintigraphy in predicting treatment response was also assessed. RESULTS Gallium scans were positive in 24 patients (71%). Mass thickness was greater in patients with positive gallium scan compared with patients with negative gallium scan (P = 0.006). Visual gallium score correlated with mass thickness (P = 0.006). Visual gallium score decreased significantly following tamoxifen treatment (P < 0.0001). Decrease in visual gallium score correlated with decreases in C-reactive protein and erythrocyte sedimentation rate (P = 0.019) and with decrease in mass thickness (P < 0.01). Positive predicting value (PPV) of positive baseline gallium scan was 0.71; PPV of negative follow-up gallium scan in patients with initial positive scan was 0.89. 67Ga scintigraphy detected extra-abdominal involvement in one patient and recurrent active disease in two symptomatic patients with normal acute-phase reactants and stable residual mass. CONCLUSION 67Ga scintigraphy is useful in assessing (recurrent) activity of RPF disease and in evaluating treatment response in patients with initial positive gallium scan.
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317
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Li JJ, Kwak SJ, Jung DS, Kim JJ, Yoo TH, Ryu DR, Han SH, Choi HY, Lee JE, Moon SJ, Kim DK, Han DS, Kang SW. Podocyte biology in diabetic nephropathy. Kidney Int 2007:S36-42. [PMID: 17653209 DOI: 10.1038/sj.ki.5002384] [Citation(s) in RCA: 145] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Glomerular visceral epithelial cells, namely podocytes, are highly specialized cells and give rise to primary processes, secondary processes, and finally foot processes. The foot processes of neighboring podocytes interdigitate, leaving between them filtration slits. These are bridged by an extracellular substance, known as the slit diaphragm, which plays a major role in establishing size-selective barrier to protein loss. Furthermore, podocytes are known to synthesize matrix molecules to the glomerular basement membrane (GBM), including type IV collagen, laminin, entactin, and agrin. Because diabetic nephropathy is clinically characterized by proteinuria and pathologically by glomerular hypertrophy and GBM thickening with foot process effacement, podocytes have been the focus in the field of research on diabetic nephropathy. As a result, many investigations have demonstrated that the diabetic milieu per se, hemodynamic changes, and local growth factors such as transforming growth factor-beta and angiotensin II, which are considered mediators in the pathogenesis of diabetic nephropathy, induce directly and/or indirectly hypertrophy, apoptosis, and structural changes, and increase type IV collagen synthesis in podocytes. This review explores some of the structural and functional changes of podocytes under diabetic conditions and their role in the development and progression of diabetic nephropathy.
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318
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Shin DB, Bang SM, Park SH, Kang HG, Jue JI, Han SH, Lee Y, Cho EK, Lee JH. Correlation of quality of life with tumor response in patients receiving palliative chemotherapy for advanced gastrointestinal tumors. Med Oncol 2007; 25:81-7. [PMID: 18188719 DOI: 10.1007/s12032-007-0045-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2007] [Accepted: 06/22/2007] [Indexed: 11/24/2022]
Abstract
We prospectively evaluated the association of tumor response with change of quality of life (QOL) in patients with advanced gastrointestinal tumors receiving palliative chemotherapy. Out of 133 eligible patients, 90 (68%) completed the European Organization for Research and Treatment Quality of Life Questionnaire C-30 (EORTC QLQ C-30) at baseline and at regular intervals during palliative chemotherapy. Among the 90 available patients, 88 patients could be evaluated for response, and 32 (36%) responded. Taking into account 32 patients who had stable disease, 64 (73%) achieved a clinical benefit, defined as an objective response or stable disease. Improvement in the emotional functioning or global QOL was observed before the fourth cycle of chemotherapy in responders (P = 0.039) and patients with clinical benefit (P = 0.026). Grade 3 or 4 toxic effects occurred in 39% of patients; however, this did not adversely affect the global or other domains of QOL. Therefore, change of QOL during the chemotherapy was closely related with clinical outcomes. We should apply the QOL assessment to all patients who received palliative chemotherapy for their gastrointestinal tumors.
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319
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Jee BC, Han SH, Moon JH, Suh CS, Kim SH. Influence of well defined protein source on in vitro maturation of human oocyte: human follicular fluid versus human serum albumin. Fertil Steril 2007; 89:348-52. [PMID: 17482173 DOI: 10.1016/j.fertnstert.2007.02.052] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2006] [Revised: 02/22/2007] [Accepted: 02/22/2007] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To compare developmental competency of immature human oocytes matured in vitro in G2 media supplemented by two different protein sources. DESIGN Retrospective comparative study. SETTING University Hospital IVF program. PATIENT(S) Sixty-five consecutive women from whom at least one immature oocyte was obtained during 76 cycles of ovarian hyperstimulation and IVF. INTERVENTION(S) G2 media containing human follicular fluid (hFF) (from January to August 2005) or human serum albumin (HSA) (from Sep 2005 to Aug 2006) were used for in vitro maturation of immature oocytes. MAIN OUTCOME MEASURE(S) In vitro maturation rate of immature oocytes and their fertilization rate. RESULT(S) A total of 231 immature oocytes including 107 germinal vesicle (GV) stage and 124 metaphase I (MI) were cultured in vitro and then fertilized by intracytoplasmic sperm injection. The in vitro maturation rate of GV (40.6% vs. 52.0%) and MI oocytes (84.4% vs. 70.0%) and the fertilization rate in GV (76.9% vs. 48.7%) and MI oocytes (70.4% vs. 73.4%) were not different between hFF- and HSA-supplemented G2 media. The cleavage rates of embryos generated from either GV or MI were similar between the two groups, but they were seldom used in embryo transfer. CONCLUSION(S) Developmental competency of immature oocytes was comparable when matured in vitro with G2 media supplemented by either hFF or HSA. Our results suggest that hFF as a protein supplement for human in vitro maturation can be replaced by highly defined HSA.
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320
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Yoo TH, Li JJ, Kim JJ, Jung DS, Kwak SJ, Ryu DR, Choi HY, Kim JS, Kim HJ, Han SH, Lee JE, Han DS, Kang SW. Activation of the renin-angiotensin system within podocytes in diabetes. Kidney Int 2007; 71:1019-27. [PMID: 17361112 DOI: 10.1038/sj.ki.5002195] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The autocrine and paracrine activation of the renin-angiotensin system (RAS) within cells of the kidney plays a role in the overall pathophysiology of the renal disease due to diabetes. In this study, we focus on components of the RAS in the podocyte as these cells are important in the pathogenesis of glomerulosclerosis and proteinuria. Immortalized mouse podocytes were exposed to media containing normal glucose (NG) or high glucose (HG) for in vitro studies. In vivo studies utilized kidney tissue obtained from rats treated for 3 months with streptozotocin to induce diabetes. Angiotensinogen (AGT) and the angiotensin II (AII) type 1 receptor mRNA and protein were significantly increased in the podocytes cultured under the high glucose conditions. Both angiotensins I and II levels were significantly higher in cell lysates and the conditioned media of cells grown in high glucose. There were no differences in renin activity, angiotensin-converting enzyme level, or AII type 2 receptor level. Glomerular AGT and AII type 1 receptor assessed by means of immunohistochemistry were increased in diabetic rats compared with the control rats. Other measured components of the RAS within the glomeruli were not different. We suggest that increased AGT, an attendant increase in AII and increased AII type 1 receptor in podocytes experiencing diabetic conditions play an important role in the pathogenesis of diabetic nephropathy.
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MESH Headings
- Angiotensinogen/genetics
- Angiotensinogen/metabolism
- Animals
- Cells, Cultured
- Diabetes Mellitus/metabolism
- Diabetes Mellitus/pathology
- Diabetes Mellitus, Experimental/metabolism
- Immunohistochemistry/methods
- Kidney Glomerulus/metabolism
- Male
- Mice
- Peptidyl-Dipeptidase A/genetics
- Peptidyl-Dipeptidase A/metabolism
- Podocytes/metabolism
- RNA, Messenger/metabolism
- Rats
- Rats, Sprague-Dawley
- Receptor, Angiotensin, Type 1/genetics
- Receptor, Angiotensin, Type 1/metabolism
- Receptor, Angiotensin, Type 2/genetics
- Receptor, Angiotensin, Type 2/metabolism
- Renin-Angiotensin System
- Staining and Labeling
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321
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Lee JR, Lee PB, Do SH, Jeon YT, Lee JM, Hwang JY, Han SH. The effect of gynaecological laparoscopic surgery on cerebral oxygenation. J Int Med Res 2007; 34:531-6. [PMID: 17133783 DOI: 10.1177/147323000603400511] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
During gynaecological laparoscopic surgery, alterations in cerebral blood flow and intracranial pressure are frequently reported. These changes affect cerebral perfusion pressure and thus may affect cerebral oxygenation. In this prospective study, the effect of gynaecological laparoscopic surgery on cerebral oxygenation was examined by following the changes in regional cerebral oxygen saturation (rSo2). Twenty-four female patients were enrolled. The mean rSo2 was 65.5 +/- 5.4% at baseline before surgery, 60.8 +/- 5.6% when the patient was placed in the Trendelenburg position, 57.1 +/- 9.3% after creation of pneumoperitoneum, and 64.0 +/- 7.3% after the completion of surgery. During the period of pneumoperitoneum, rSo2 fell below 50% in two hypercapnic patients. In comparison with baseline, rSo2 declined significantly in the Trendelenburg position. The creation of pneumoperitoneum itself did not decrease the average rSo2 value further unless the patients were hypercapnic.
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322
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Han SH, Park SH, Cho GH, Kim NR, Oh JH, Nam E, Shin DB. Malignant gastrointestinal stromal tumor in a patient with neurofibromatosis type 1. Korean J Intern Med 2007; 22:21-3. [PMID: 17427641 PMCID: PMC2687598 DOI: 10.3904/kjim.2007.22.1.21] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Neurofibromatosis type 1 (von Recklinghausen's disease, NF-1) is an autosomal-dominant neurocutaneous disorder characterized by abnormal skin pigmentation (café au lait spots and axillary freckling), cutaneous and plexiform neurofibromas, skeletal dysplasias, and Lisch nodules (pigmented iris hamartomas). Gastrointestinal stromal tumors (GISTs) are the most common tumors of mesenchymal origin in the gastrointestinal tract, mesentery, omentum, and retroperitoneum. Here, we report a case of GIST in the ileum of a 76-year-old woman previously diagnosed as NF-1. She was admitted due to sudden onset of abdominal pain. Contrast enhanced CT scan revealed a moderately defined, peripherally enhanced soft tissue mass of about 8.8 x 7.3cm, originating from the small bowel in the left of the abdomen. Surgical excision was performed and the tumor was found to be composed of tumor cells that were positive for c-kit protein. The patient started imatinib treatment a month later, but stopped medication due to dyspepsia after a few months and eventually progressed after 18 months.
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323
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Han SH, Jee BC, Suh CS, Kim SH, Choi YM, Kim JG, Moon SY. Clinical Outcomes of Tubal Heterotopic Pregnancy: Assisted vs. Spontaneous Conceptions. Gynecol Obstet Invest 2007; 64:49-54. [PMID: 17259714 DOI: 10.1159/000099014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2006] [Accepted: 11/01/2006] [Indexed: 11/19/2022]
Abstract
BACKGROUND It has not been established whether the clinical outcomes of tubal heterotopic pregnancy resulting from assisted conception are different to those of spontaneous conception. The aim of this study was to compare the clinical course and the outcome of intrauterine gestation following surgical treatment for tubal heterotopic pregnancy according to the method of pregnancy. METHODS Medical records of 13 cases of tubal heterotopic pregnancy experienced in Seoul National University Hospital during 1990-2004 and 30 case reports of tubal heterotopic pregnancy published in the Korean Journal of Obstetrics and Gynecology during 1980-2004 were reviewed retrospectively. The clinical outcomes were compared between the assisted (n = 23) and spontaneous conception groups (n = 20). RESULTS The assisted conception group had a significantly higher preoperative systolic blood pressure and a previous history of pelvic pathology. The spontaneous group had a higher incidence of tubal rupture and hemoperitoneum. The assisted conception group had a higher live birth rate than the spontaneous group (47.8 vs. 20%, p = 0.056). CONCLUSIONS In tubal heterotopic pregnancy, the assisted conception group had a more favorable clinical course and intrauterine gestation outcome following surgical treatment when compared with the spontaneous conception group.
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Han SH, Na DJ, Yoo YW, Kim DG, Moon YR, Moon KM, Lee YD, Cho YS, Han MS, Yoon HJ. A Case of Probable Community Acquired Acinetobacter baumannii Pneumonia. Tuberc Respir Dis (Seoul) 2007. [DOI: 10.4046/trd.2007.63.3.273] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Ko KT, Na DJ, Han SH, Jung SS, Moon KM, Kim DJ, Lee YD, Cho YS, Han MS. Unusual Presentation of Miliary Tuberculosis. Tuberc Respir Dis (Seoul) 2007. [DOI: 10.4046/trd.2007.63.1.67] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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