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Hyun J, Youn J, Kim J, Cho H, Lee H, Kang S, Kim J, Jeon E, Choi J. Impact of Recipient Age and Ecmo or Rrt Support on Post-Heart Transplant Outcomes: An Analysis of the Korean Organ Transplant Registry. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.760] [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: 04/05/2023] Open
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Rajaruban S, Fedorak R, Zalasky A, Hotte N, Laffin M, Hyun J, Ma W, Madsen K. A77 CONSUMPTION OF REFINED SUGAR RAPIDLY DECREASES MICROBIAL DIVERSITY AND ENHANCES SYSTEMIC RESPONSE TO MICROBIAL STIMULI. J Can Assoc Gastroenterol 2019. [DOI: 10.1093/jcag/gwz006.076] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - R Fedorak
- University of Alberta, Edmonton, AB, Canada
| | - A Zalasky
- University of Alberta, Edmonton, AB, Canada
| | - N Hotte
- University of Alberta, Edmonton, AB, Canada
| | - M Laffin
- University of Alberta, Edmonton, AB, Canada
| | - J Hyun
- University of Alberta, Edmonton, AB, Canada
| | - W Ma
- University of Alberta, Edmonton, AB, Canada
| | - K Madsen
- University of Alberta, Edmonton, AB, Canada
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Hyun J, Sliwinski M, Katz M, Zimmerman M, Derby C, Lipton R. THE COGNITIVE RESERVE PARADOX: COGNITIVE ENGAGEMENT IN MIDLIFE PREDICTS MORE RAPID COGNITIVE DECLINE IN LATE LIFE. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.942] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J Hyun
- Pennsylvania State University
| | | | - M Katz
- Albert Einstein College of Medicine
| | | | - C Derby
- Albert Einstein College of Medicine
| | - R Lipton
- Albert Einstein College of Medicine
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Park J, Hyun Y, Piao M, Shilnikova K, Zhen A, Kang J, Ahn Y, Kang H, Hyun J. 287 Mackerel fermented fish oil suppresses human keratinocyte damage caused by ultraviolet B radiation. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.285] [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]
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Chai H, Hyun J. A DAILY DIARY ANALYSIS OF THE RELATIONSHIP BETWEEN STRESS, EMOTIONAL SUPPORT, AND POSITIVE AFFECT. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1778] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H. Chai
- Human Development and Family Studies, The Pennsylvania State University, University Park, Pennsylvania
| | - J. Hyun
- Human Development and Family Studies, The Pennsylvania State University, University Park, Pennsylvania
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Conner P, Galletta E, Hyun J, Vogel-Eyny A, Marangolo P. Combining tDCS and evidence-based behavioral treatment in aphasia: A case study. Brain Stimul 2017. [DOI: 10.1016/j.brs.2017.04.069] [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: 10/19/2022] Open
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Kang J, Hyun J, Sliwinski M, Mogle J. DAILY SOCIAL INTERACTION RELATES TO SUBJECTIVE COGNITIVE FUNCTION. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1508] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J. Kang
- Human Development and Family Studies, The Pennslyvania State Universtiy, State College, Pennsylvania
| | - J. Hyun
- Human Development and Family Studies, The Pennslyvania State Universtiy, State College, Pennsylvania
| | - M. Sliwinski
- Human Development and Family Studies, The Pennslyvania State Universtiy, State College, Pennsylvania
| | - J.A. Mogle
- Human Development and Family Studies, The Pennslyvania State Universtiy, State College, Pennsylvania
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Gambichler T, Hyun J, Moussa G, Tomi NS, Boms S, Altmeyer P, Hoffmann K, Kreuter A. Optical coherence tomography of cutaneous lupus erythematosus correlates with histopathology. Lupus 2016; 16:35-8. [PMID: 17283583 DOI: 10.1177/0961203306074773] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Diagnosis of cutaneous forms of lupus erythematosus (LE), including chronic discoid LE (CDLE) and subacute cutaneous LE (SCLE), is usually based on characteristic clinical and histopathological findings. We aimed to visualize morphological changes in lesions of cutaneous LE using optical coherence tomography (OCT), and to correlate the OCT findings with histopathology. Six patients with CDLE and five patients with SCLE were investigated. Prior to skin biopsy, OCT assessment was performed on previously marked lesions. The images of OCT and corresponding histology were evaluated side-by-side on the PC screen. The thickening and disruption of the entrance signal in OCT images correlated with the hyperkeratosis which was observed in the histological sections. Atrophy of the epidermis, which was demonstrated by histology, could also be detected in the OCT pictures showing a thinned layer below the entrance signals. On OCT, a patchy reduction of reflectivity was observed in the upper dermis corresponding to dense patchy, partly lichenoid, lymphocytic infiltrates and oedema of the upper dermis. Furthermore, OCT images displayed increased signal-free cavities which histopathologically corresponded to dilated vessels in the upper dermis. All OCT parameters studied significantly (P < 0.05) correlated with histopathological features as indicated by coefficients of correlation ranging from 0.55 to 0.94. OCT enables to demonstrate micromorphological changes in cutaneous LE which correlate with histopathological findings. Nevertheless, the current technique does not allow one to visualize definite diagnostic features of cutaneous LE. However, OCT may be a promising method for objective monitoring of LE activity and treatment effects over time in vivo
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Affiliation(s)
- T Gambichler
- Department of Dermatology, Ruhr-University Bochum, Bochum, Germany.
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Knispel S, Kirschke J, Tigges C, Hyun J, Kreuter A. Paraneoplastischer oder medikamenteninduzierter subakut kutaner Lupus erythematodes?*. AKTUEL RHEUMATOL 2015. [DOI: 10.1055/s-0035-1548749] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- S. Knispel
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - J. Kirschke
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - C. Tigges
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - J. Hyun
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - A. Kreuter
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
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Siorokos C, Kirschke J, Hyun J, Tigges C, Kreuter A. Lymphknotenmetastase oder verschlepptes Pigment? – Malignes Melanom innerhalb einer Schmucktätowierung. Akt Dermatol 2014. [DOI: 10.1055/s-0034-1365508] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- C. Siorokos
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - J. Kirschke
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - J. Hyun
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - C. Tigges
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - A. Kreuter
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
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Knispel S, Kirschke J, Tigges C, Hyun J, Kreuter A. Paraneoplastischer oder medikamenteninduzierter subakut kutaner Lupus erythematodes? Akt Dermatol 2014. [DOI: 10.1055/s-0034-1365475] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- S. Knispel
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - J. Kirschke
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - C. Tigges
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - J. Hyun
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - A. Kreuter
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
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Kirschke J, Knispel S, Hyun J, Tigges C, Kreuter A. Elektrochemotherapie zur Behandlung von Hauttumoren und Hautmetastasen. Akt Dermatol 2014. [DOI: 10.1055/s-0034-1365519] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- J. Kirschke
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - S. Knispel
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - J. Hyun
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - C. Tigges
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
| | - A. Kreuter
- Klinik für Dermatologie, Venerologie und Allergologie, HELIOS St. Elisabeth Klinik, Oberhausen
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Paik K, Chung M, Hyun J, Atashroo D, McArdle A, Senarath-Yapa K, Zielins E, Tevlin R, Hu M, Ransom C, Meyer N, Domecus B, Rimsa J, Gurtner G, Longaker M, Wan D. Evaluation of Human Fat Graft Survival with an Adipose Injection Device Compared to the Coleman Technique for In Vivo Adipose Delivery. J Surg Res 2014. [DOI: 10.1016/j.jss.2013.11.978] [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: 11/16/2022]
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Lo D, Chan C, Hyun J, Chung M, Montoro D, Wan D, Weissman I, Longaker M. Identification and Characterization of Neurocranial Skeletal Progenitor Cells. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.856] [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: 10/27/2022]
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Levi B, Glotzbach J, Sorkin M, Hyun J, Januzyk M, Wan D, Longaker M, Gurtner G. Molecular Analysis of Adipose Derived Stem Cells from Lymphedema Tissue. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.931] [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: 10/14/2022]
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Nauta A, Deveza L, Montoro D, Hyun J, Gurtner G, Longaker M, Yang F. Upregulation of VEGF in Adult Leptin Deficient Diabetic Mouse Adipose Derived Stromal Cells Using Biodegradable Nanoparticulate Polymeric Vectors Can Be Used to Accelerate Wound Closure in a Diabetic Mouse Excisional Wound Healing Model. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.280] [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: 11/15/2022]
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Hyun J, Park K, Yoo Y, Lee B, Han B, Song E, Park M. Effects of Different Sensitization Events on HLA Alloimmunization in Solid Organ Transplantation Patients. Transplant Proc 2012; 44:222-5. [DOI: 10.1016/j.transproceed.2011.12.049] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Lee J, Lee J, Hwang H, Jung E, Huh S, Hyun J, Park D. Promotion of stem cell proliferation by vegetable peptone. Cell Prolif 2009; 42:595-601. [PMID: 19614679 PMCID: PMC6496542 DOI: 10.1111/j.1365-2184.2009.00630.x] [Citation(s) in RCA: 10] [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] [Received: 08/04/2008] [Accepted: 11/12/2008] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVES Technical limitations and evolution of therapeutic applications for cell culture-derived products have accelerated elimination of animal-derived constituents from such products to minimize inadvertent introduction of microbial contaminants, such as fungi, bacteria or viruses. The study described here was conducted to investigate the proliferative effect of vegetable peptone on adult stem cells in the absence of serum, and its possible mechanisms of action. MATERIALS AND METHODS Cell viability and proliferation were determined using the MTT assay and Click-iT EdU flow cytometry, respectively. In addition, changes in expression of cytokine genes were analysed using MILLIPLEX human cytokine enzyme-linked immunosorbent assay kit. RESULTS Viability of cord blood-derived mesenchymal stem cells (CB-MSC) and adipose tissue-derived stem cells (ADSC) increased significantly when treated with the peptone. In addition, median value of the group treated with peptone shifted to the right when compared to the untreated control group. Furthermore, quantitative analysis of the cytokines revealed that production of vascular endothelial growth factor (VEGF), transforming growth factor-beta1 (TGF-beta1), and interleukin-6 (IL-6) increased significantly in response to treatment with our vegetable peptone in both CB-MSCs and ADSCs. CONCLUSIONS Our findings revealed that the vegetable peptone promotes proliferation of CB-MSCs and ADSCs. In addition, results of this study suggest that induction of stem cell proliferation by vegetable peptone is likely to be related to its induction of VEGF, TGF-beta1, and IL-6 expression.
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Affiliation(s)
- J Lee
- Biospectrum Life Science Institute, Gunpo-City, Gyunggi-Do, South Korea
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Li X, Tamashiro K, Liu Z, Aja S, Hyun J, Bi S, Ross C, Moran T, Smith W. Synphilin-1 induces hyperphagia-mediated obesity in mice. Appetite 2008. [DOI: 10.1016/j.appet.2008.04.149] [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]
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Doerler M, Hyun J, Venten I, Potthoff A, Bartke U, Serova K, Hoextermann S, Altmeyer P, Brockmeyer NH. Does chemosensitivity-assay-directed therapy have an influence on the prognosis of patients with malignant melanoma stage IV? A retrospective study of 14 patients with malignant melanoma stage IV. Eur J Med Res 2007; 12:497-502. [PMID: 18024256] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
OBJECTIVE To evaluate the efficacy of chemosensitivity-testing directed chemotherapy in comparison with empirically chosen therapy regimens in patients with malignant melanoma stage IV. PATIENTS AND METHODS Retrospective study including 14 patients with histologically confirmed malignant melanoma and diagnosis of stage IV disease by routine diagnostic procedures. Patients in group A (n = 7) were treated according to their individual chemosensitivity testing results, whereas patients in group B (n = 7) received empirically chosen treatment regimens. Chemosensitivity testing was performed using a nonclonogenic ATP-TCA assay. For statistical analysis the Kaplan-Meier method was used to calculate survival curves. The log-rank test was performed to compare the overall survival according to treatment group, LDH level in serum and AJCC-category. To compare the distribution of sex, LDH level in serum and AJCC-category between the treatment groups, the Fisher exact test was used. RESULTS The median overall survival of group A exceeded the median overall survival of group B by 8 versus 3 months, respectively with a median overall survival of 5 months for the whole study population. LDH level in serum at study entry showed a strong correlation with overall survival, with normal LDH levels leading to a statistically significant longer survival (p = 0.006 for the log-rank test, respectively). Moreover, stage AJCC M1a/b yielded to a better prognosis compared with stage AJCC M1c (log-rank test p = 0.066; not statistically significant). CONCLUSION Chemosensitivity-assay directed therapy might be a useful tool in determining the optimized chemotherapeutic drug or drug combination in the individual patient and might contribute to a better prognosis in patients with metastatic melanoma stage IV.
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Affiliation(s)
- M Doerler
- Department of Dermatology, Ruhr-University Bochum, Germany
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Gambichler T, Skrygan M, Kaczmarczyk JM, Hyun J, Tomi NS, Sommer A, Bechara FG, Boms S, Brockmeyer NH, Altmeyer P, Kreuter A. Increased expression of TGF-beta/Smad proteins in basal cell carcinoma. Eur J Med Res 2007; 12:509-514. [PMID: 18024258] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
BACKGROUND Basal cell carcinoma (BCC) is the most common cancer in humans placing a significant burden on healthcare services worldwide. There is an increasing evidence that the development of cutaneous epithelial tumours is pathogenetically linked to dysregulations of the transforming growth factor beta (TGF-beta) and its signalling molecules, the Smads. OBJECTIVE In the present study we aimed to investigate the mRNA as well as protein expression of TGF-beta/ Smad signalling proteins in patients with BCC and healthy controls. METHODS In this prospective pilot study, 24 patients with BCC were recruited. Punch biopsies were harvested from the centre of the tumour (lesional) as well as an adjacent healthy skin site (non-lesional controls). In addition to the specimens of BCC patients, skin samples (healthy controls) were obtained from subjects who had no history of skin cancer (n = 25). Real-time RT-PCR as well as immunohistochemistry was performed. - RESULTS The mRNA levels of TGF-b/Smad transducers observed in healthy controls did not significantly differ from TGF-beta/Smad levels observed in non-lesional skin of BCCs patients (P > 0.05). RT-PCR revealed significant mRNA overexpression of TGF-beta1, Smad3, and Smad7 in BCCs as compared to non-lesional skin (P < 0.05). TGF-beta1 mRNA expression significantly correlated with Smad3 (r = 0.60; P < 0.05) and Smad7 (r = 0.76; P < 0.05) levels. Immunohistochemistry demonstrated marked protein overexpression of Smad3 in tumour tissue as compared to non-lesional skin. CONCLUSIONS Our data suggest a possible role of TGF-beta/Smad signalling in the pathogenesis of BCC.
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Affiliation(s)
- T Gambichler
- Department of Dermatology, Ruhr-University Bochum, Gudrunstr. 56, 44791 Bochum, Germany.
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Abstract
BACKGROUND AND OBJECTIVE The aim of this study was to compare the susceptibility of nonperiodontopathic and periodontopathic bacteria to major defense mechanisms for bacterial clearance in gingival sulcus. MATERIAL AND METHODS Twenty strains of 13 oral bacterial species were studied for their susceptibility to phagocytosis by human neutrophils and to the antimicrobial peptides LL-37 and human beta defensin-3. The minimum inhibitory concentrations of LL-37 and human beta defensin-3 were determined by a liquid dilution assay, and susceptibility to phagocytosis was examined by a flow cytometric phagocytosis assay. RESULTS The minimum inhibitory concentrations of LL-37 and human beta defensin-3 varied greatly, depending on the strain and species. Although a significant difference between the non- and periodontopathic groups was not observed, the red-complex bacteria were more resistant to LL-37 than the others (p=0.004). The susceptibility of oral bacteria to phagocytosis was quite variable, depending on the species but not on the strains. The periodontopathic bacteria, especially Actinobacillus actinomycetemcomitans and the red-complex triad, were more resistant to phagocytosis than were the nonperiodontopathic bacteria (p=0.0003). In addition, bacteria resistant both to antimicrobial peptides and to phagocytosis were more common in the periodontopathic group. CONCLUSION Our results indicate that immune evasion may contribute to the pathogenicity of some periodontopathic bacteria.
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Affiliation(s)
- S Ji
- Program of Oromaxillofacial Infection & Immunity and BK21, School of Dentistry, Seoul National University, Seoul, Korea
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Yang L, Hyun J, Moran T, Bi S. Voluntary running activity is not sufficient for preventing the obesity of Koletsky (fak/fak) rats. Appetite 2007. [DOI: 10.1016/j.appet.2007.03.218] [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: 10/23/2022]
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Hyun J, Enk A. Extrakorporale Photochemotherapie-Wirkmechanismus und klinische Anwendungen - Schwerpunkt Transplantationsmedizin. Akt Dermatol 2006. [DOI: 10.1055/s-2006-944759] [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: 10/24/2022]
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Lee S, Hyun J, Jeon J, Kim K. Poster 87. Arch Phys Med Rehabil 2006. [DOI: 10.1016/j.apmr.2006.07.232] [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]
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Gambichler T, Skrygan M, Hyun J, Bechara F, Tomi NS, Altmeyer P, Kreuter A. Cytokine mRNA expression in basal cell carcinoma. Arch Dermatol Res 2006; 298:139-41. [PMID: 16826314 DOI: 10.1007/s00403-006-0673-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2006] [Revised: 04/22/2006] [Accepted: 05/23/2006] [Indexed: 10/24/2022]
Abstract
There is evidence that cytokines (CKs) play a significant role in the development and/or progression of skin cancer. The aim of the present study was to investigate the mRNA expression of tumour necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), and IL-8 in biopsy specimens of basal cell carcinoma (BCC), and to compare the results with the mRNA levels of non-lesional skin of BCC patients and healthy subjects. Skin samples were obtained from 22 patients with BCC (lesional, non-lesional) and 25 healthy subjects (controls). Routine histology and real-time RT-PCR was performed. Histological examination revealed 12 nodular BCCs and 10 superficial BCCs. The mRNA levels of CKs observed in healthy controls did not significantly (P > 0.05) differ from non-lesional CK levels of BCCs patients. However, IL-6 and IL-8 levels of lesional skin were significantly (P < 0.05) higher than the CK levels observed in non-lesional skin and controls, respectively. mRNA expression of IL-6 and IL-8 showed a significant positive correlation (r = 0.51; P < 0.05). There was no significant (P > 0.05) difference between lesional mRNA levels of TNF-alpha and those levels observed in non-lesional skin and controls. The mRNA expression of CKs found in nodular and superficial BCCs did not significantly differ (P > 0.05). BCC is associated with a significant increase of IL-6 and IL-8 expression. We have shown for the first time that upregulation of IL-6 mRNA significantly correlates with IL-8 overexpresssion. In accordance with previous studies our data suggest a role for IL-6 and IL-8 in the development and/or progression of BCC, since mRNA expression of both CKs are significantly increased in tumour tissue.
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Affiliation(s)
- T Gambichler
- Department of Dermatology, Ruhr-University Bochum, Gudrunstr. 56, Bochum 44791, Germany.
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Kreuter A, Hyun J, Skrygan M, Sommer A, Bastian A, Altmeyer P, Gambichler T. Ultraviolet A1-induced downregulation of human β
-defensins and interleukin-6 and interleukin-8 correlates with clinical improvement in localized scleroderma. Br J Dermatol 2006; 155:600-7. [PMID: 16911288 DOI: 10.1111/j.1365-2133.2006.07391.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [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: 11/30/2022]
Abstract
BACKGROUND In previous studies, distinct immunological abnormalities have been reported in localized scleroderma (LS). Several pro-inflammatory cytokines have been demonstrated at increased levels in sera of patients with LS in parallel with disease activity. Human beta-defensins (hBDs) are peptides with antimicrobial activity, but have been also shown to be implicated in tissue injury, scarring and wound healing. hBD expression in LS, a condition resembling pathological scarring due to excessive stimulation of matrix synthesis and fibroblast activation, has so far not been investigated. Ultraviolet (UV) A1 phototherapy, the most recent advance in the treatment of LS, targets T-cell dermal inflammatory infiltrates via induction of various cytokines and soluble factors besides well-known effects on collagen metabolism. OBJECTIVES We sought to investigate the effects of UVA1 on the expression and modulation of hBDs and several pro-inflammatory cytokines in LS. METHODS UVA1 phototherapy was performed five times weekly for 8 weeks resulting in a total of 40 treatment sessions (single dose 20 J cm2, cumulative dose 800 J cm2). hBD-1, hBD-2 and hBD-3 mRNA as well as tumour necrosis factor-alpha, transforming growth factor-beta, interleukin (IL) -2, IL-4, IL-6 and IL-8 mRNA expression were determined by quantitative real-time reverse transcription-polymerase chain reaction in lesional and unaffected skin of patients with LS. RESULTS Skin status markedly improved in all 14 patients, resulting in a significant reduction of the clinical score from baseline to the end of treatment. hBD-1, hBD-2 and hBD-3 mRNA levels were higher in lesional skin compared with unaffected skin and skin from healthy volunteers. Following UVA1 phototherapy, hBD-1 mRNA decreased in lesional, but not in unaffected skin. hBD-3 mRNA levels significantly decreased after UVA1 in lesional skin, whereas an increase of hBD-3 was observed in unaffected skin. IL-6 and IL-8 mRNA levels were significantly elevated in lesional skin and significantly decreased after UVA1 irradiation, whereas mRNA for both cytokines remained unchanged in irradiated unaffected skin. The decrease of hBD-1, hBD-3, IL-6 and IL-8 mRNA paralleled the extent of disease and response to UVA1 phototherapy. CONCLUSIONS hBDs and IL-6 and IL-8, cytokines with pivotal importance in sclerotic skin diseases, are downregulated by UVA1 in the lesional skin of patients with LS. Their pathogenetic relevance with respect to clinical improvement needs further investigation.
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Affiliation(s)
- A Kreuter
- Department of Dermatology and Allergology, Ruhr-University Bochum, Gudrunstrasse 56, D-44791 Bochum, Germany.
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Weller A, Hyun J, Schroeder M, Zagoory-Sharon O, Bi S, Moran T. WITHDRAWN: Development of neuropeptide Y overexpression in the dorsomedial hypothalamus in OLETF rats lacking cholecystokinin (CCK) A receptors. Appetite 2006. [DOI: 10.1016/j.appet.2006.03.174] [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]
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Aplasca A, Vadlamudi A, Townsend C, Plummer E, Kuhajda F, Ronnett G, Hyun J, Mcfadden J, Thupari J, Aja S, Medghalchi S, Moran T. WITHDRAWN: “Intracerebroventricular administration of either C89b, a stimulator of carnitinepalmitoyl-transferase-1 (CPT-1s), or cerulenin, an inhibitor of fatty acid synthase (FASi), reduces food intake and body weight in mice”. Appetite 2006. [DOI: 10.1016/j.appet.2006.03.163] [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: 11/29/2022]
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Abstract
BACKGROUND Psoralen ultraviolet A (PUVA) is the standard photo(chemo)therapeutic regimen for patients suffering from subacute prurigo (SP). HYPOTHESIS Regarding efficacy, bath PUVA is not superior to medium-dose ultraviolet-A1 (MD-UVA1) and narrowband ultraviolet-B (NB-UVB), which may be considered the new photo(chemo)therapeutic options for SP. METHODS We performed a prospective randomised, controlled, three-arm photo(chemo)therapeutic study. Patients suffering from histopathologically proven SP with a clinical score (PIP score; papules, infiltration and pruritus) of at least 5 points were enrolled into the study. Treatment with bath PUVA was performed 4 times weekly and MD-UVA1 and NB-UVB 5 times weekly. Photo(chemo)therapy was administered over a 4-week period. Outcome measure was the severity of SP investigated by means of the PIP score after 4 weeks of therapy. RESULTS In total, 33 patients with SP were randomly allocated to photo(chemo)therapy. Bath PUVA (n = 9), MD-UVA1 (n = 11) and NB-UVB (n = 13) resulted in a significant reduction of the baseline PIP score as assessed on the basis of intention-to-treat (ITT) analysis (P = 0.003). However, ITT analysis revealed significantly higher PIP score reduction in patients who were treated with bath PUVA and MD-UVA1 compared with NB-UVB (P < 0.01, 95% CI 1.1-3.63 and P < 0.05, 95% CI 0.42-2.70, respectively). CONCLUSIONS Photo(chemo)therapy, including bath PUVA, MD-UVA1 and NB-UVB, appears to be an effective and safe treatment option for patients suffering from SP. UVA1 and particularly PUVA seem superior to NB-UVB in the management of SP.
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Affiliation(s)
- T Gambichler
- Department of Dermatology and Allergology, Ruhr-University Bochum, Bochum, Germany.
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Kim G, Shon J, Won H, Hyun J, Oh W. A study of methods to reduce groundwater contamination around the Kimpo landfill in Korea. Environ Technol 2002; 23:561-570. [PMID: 12088379 DOI: 10.1080/09593332508618394] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Four different methods were studied to reduce the groundwater contamination around the Kimpo landfill in Korea by leakage of a leachate. The hydraulic parameters were measured for this study and then the groundwater flow and contaminant transport systems around the Kimpo landfill were simulated with MODFLOW and MT3D models. Both the method of establishing 5 sets of Radial Collector Well Laterals (RCWLs) within the landfill and a method utilizing the wells for dewatering condensed water brought about a 70% leachate elimination efficiency. Their construction costs were cheap, and the maximum concentrations of chloride and phenol in the leachate effluent were high. Meanwhile, a method establishing an interception wall to the 2nd layer at the cirumference of the landfill and 22 sets of RCWLs within it brought about a 92% leachate elimination efficiency. Its construction cost was expensive, and the maximum concentrations of chloride and phenol in the leachate effluent were low. A method of establishing an interception wall to the 3rd layer and 40 sets of RCWLs brought about a 97% leachate elimination efficiency. Its construction cost was the most expensive, and the maximum concentrations of chloride and phenol were low. Conclusively, a method of establishing 22 sets of RCWLs was evaluated as the most stable and economical option to reduce groundwater contamination concentration below drinking water standard.
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Affiliation(s)
- G Kim
- Korea Atomic Energy Research Institute, Yusong, Daejeon
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Affiliation(s)
- J Hyun
- Department of Biomedical Engineering Duke University, Box 90281 Durham, North Carolina 27708-0281, USA
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Hyun J, Aspnes DE, Cuomo JJ. Nondestructive Measurement of a Glass Transition Temperature at Spin-Cast Semicrystalline Polymer Surfaces. Macromolecules 2001. [DOI: 10.1021/ma0012797] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. Hyun
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7907
| | - D. E. Aspnes
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7907
| | - J. J. Cuomo
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7907
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Hyun J, Chaudhuri G, Fukuto JM. The reductive metabolism of nitric oxide in hepatocytes: possible interaction with thiols. Drug Metab Dispos 1999; 27:1005-9. [PMID: 10460799] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023] Open
Abstract
Nitric oxide (NO) is both an endogenously generated species and the active species released from a variety of important drugs. Due to its endogenous generation and use as a therapeutic agent, the metabolism and fate of NO is of interest and concern. To date, most attention regarding the metabolism and fate of NO has been paid to its oxidized metabolites. Due to the reducing environment of cells, we considered that NO may also undergo reductive metabolism as well. Therefore, we have examined the reductive metabolism of NO by hepatocytes. Generation of nitrous oxide (N(2)O) was used as an indication of NO reduction. Indeed, we observed that NO could be reduced to N(2)O by the cytosolic fraction of hepatocytes. The N(2)O production was partially inhibited by the thiol modifying agent, N-ethylmaleimide and thiol consumption was observed during N(2)O formation. Thus, our results indicate that NO reduction is feasible and likely occurs via a thiol-dependent process.
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Affiliation(s)
- J Hyun
- Department of Pharmacology, University of California at Los Angeles School of Medicine, Center for the Health Sciences, Los Angeles, California 90095-1735, USA
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Abstract
To investigate the effects of endogenous insulin on pancreatic exocrine secretion in humans, we evaluated the pure pancreatic juice obtained by endoscopic cannulation of the main pancreatic duct in 21 healthy subjects (14 men and seven women). Samples of pancreatic juices were collected after intravenous injection of either glucose (50%, 40 ml), secretin (0.25 CU/kg), and cholecystokinin-8 (CCK) (40 ng/kg), or a combination of glucose, secretin, and CCK in six 5-min periods. The responses of plasma glucose, insulin, and C-peptide to intravenous administration of glucose were measured. After infusion of glucose, the plasma insulin and C-peptide levels were significantly increased and remained at high levels during 30-min experiments, intravenous administration of secretin and CCK resulted in significant increases of pancreatic secretion including volume, bicarbonate, and protein output. When glucose was simultaneously administered with secretin and CCK, pancreatic secretion was significantly increased, more than the effects achieved by the secretin and CCK. However, glucose alone did not increase basal pancreatic secretion. These observations suggest that endogenous insulin intensifies pancreatic secretion stimulated by secretin and CCK in humans.
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Affiliation(s)
- C Kim
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
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Wong PS, Hyun J, Fukuto JM, Shirota FN, DeMaster EG, Shoeman DW, Nagasawa HT. Reaction between S-nitrosothiols and thiols: generation of nitroxyl (HNO) and subsequent chemistry. Biochemistry 1998; 37:5362-71. [PMID: 9548918 DOI: 10.1021/bi973153g] [Citation(s) in RCA: 308] [Impact Index Per Article: 11.8] [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: 02/07/2023]
Abstract
S-Nitrosothiols have been implicated to play key roles in a variety of physiological processes. The potential physiological importance of S-nitrosothiols prompted us to examine their reaction with thiols. We find that S-nitrosothiols can react with thiols to generate nitroxyl (HNO) and the corresponding disulfide. Further reaction of HNO with the remaining S-nitrosothiol and thiol results in the generation of other species including NO, sulfinamide, and hydroxylamine. Mechanisms are proposed that rationalize the observed products.
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Affiliation(s)
- P S Wong
- Department of Pharmacology, UCLA School of Medicine, Los Angeles, California 90095-1735, USA
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Hyun J, Bennison BW, LaRock PA. The Formation of Large Bacterial Aggregates at Depth Within the Louisiana Hydrocarbon Seep Zone. Microb Ecol 1997; 33:216-222. [PMID: 9115185 DOI: 10.1007/s002489900024] [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] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- J Hyun
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
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Abstract
The role of thiols on the activation and/or stabilization of rat brain nitric oxide synthase (NOS) has been investigated. It was found that thiols are not necessary for stabilizing or protecting the protein during purification but are required during enzyme turnover for maximum activity. In the complete absence of thiols but with added tetrahydrobiopterin, the enzyme retained a low basal activity. Thiol addition to a thiol-deplete preparation of the enzyme resulted in a 4 to 7-fold increase in activity when measured after 15 min. High concentrations of dihydropteridine reductase also caused an apparent activation of NOS and was capable of replacing thiols. The data presented is consistent with a cofactor role for thiols. The possibility that they serve as reducing agents for the regeneration of tetrahydrobiopterin from dihydrobiopterins is discussed.
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Affiliation(s)
- Y Komori
- Department of Pharmacology, UCLA School of Medicine 90024-1735, USA
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Hyun J, Komori Y, Chaudhuri G, Ignarro LJ, Fukuto JM. The protective effect of tetrahydrobiopterin on the nitric oxide-mediated inhibition of purified nitric oxide synthase. Biochem Biophys Res Commun 1995; 206:380-6. [PMID: 7529500 DOI: 10.1006/bbrc.1995.1052] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [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]
Abstract
The nitric oxide synthases (NOS) are a class of enzymes responsible for the generation of NO via an oxygen and NADPH dependent oxidation of the amino acid arginine. These enzymes are ironheme proteins which contain FAD and FMN and, enigmatically, require tetrahydrobiopterin (BH4). NOS has recently been shown to be subject to inhibition by its product, NO. Preliminary data by us indicate that a possible role for BH4 is to prevent and/or reverse the NO-mediated inhibition of NOS. The objective of this study was to elucidate the mechanism by which BH4 protects NOS against NO inhibition. Protection of NOS from NO inhibition was observed by both BH4 and the BH4 regeneration system, dihydropteridine reductase (DHPR)/NADH. NO, rather than an oxidation product, appears to be the inhibitory species. Protection by BH4 is not likely due to a simple chemical reaction between BH4 and NO or its oxidation product, NO2. The results are consistent with a protective mechanism by which BH4 may act as a nonstoichiometric reducing agent for a redox active enzyme component, such as the ironheme, to prevent NO ligation.
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Affiliation(s)
- J Hyun
- Department of Pharmacology, UCLA School of Medicine 90024-1735
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Abstract
Changes in the unaccommodated human crystalline lens were characterized as a function of subject age for 100 normal emmetropes over the age range 18-70 yr by Scheimpflug slit-lamp photography. With increasing age, the lens becomes thicker sagittally, but since the distance from the cornea to the posterior lens surface remains unchanged, this indicates that the center of lens mass moves anteriorly and the anterior chamber becomes shallower. Sagittal nuclear thickness is independent of age, but both anterior and posterior cortical thicknesses increase with age, shifting the location of the nucleus and the central sulcus in the anterior direction. The amount of light scattered by the lens at high angles, as represented by normalized and integrated lens densities from the digitized images, increases with increasing age in an exponential fashion. Similar relationships to age are observed for the major anterior zone of discontinuity (maximum density) and the central sulcus (minimum density). The relationships of these results to accommodation and presbyopia are discussed.
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Affiliation(s)
- C A Cook
- Center for Biophysics, Rensselaer Polytechnic Institute, Troy, NY 12180-3590
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Schmidt DD, Schmidt PM, Crabtree BF, Hyun J, Anderson P, Smith C. The temporal relationship of psychosocial stress to cellular immunity and herpes labialis recurrences. Fam Med 1991; 23:594-9. [PMID: 1794671] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This study used a prospective single-subject study design and time series analysis for repeated measures data to investigate the hypothesis that variations in psychosocial stress are associated with changes in cellular immunity in a study subject with recurrent herpes labialis. A study subject who was antibody positive for HSV-1 but reported no clinical manifestations of disease served as a control. Psychosocial stress, as measured by a questionnaire; cellular immunity, as measured by the monoclonal antibodies CD4 (OKT4), which defines the helper/inducer subset of T lymphocytes; and CD8 (OKT8), which defines the suppressor/cytotoxic subset, were measured weekly over the 32-week study period. Analysis of data using bivariate time series (ARIMA) demonstrated significant inverse correlations between stress level scores and percent CD4 helper/inducer T lymphocytes in both subjects. In the study subject with recurrent herpes simplex labialis, a Mann-Whitney U statistic determined that the percent of CD4 in the early stages of a recurrence were significantly lower than the percent of CD4 at other times when blood samples were drawn. The data presented are repeated measures on two individuals with positive antibodies to the herpes simplex virus, one with recurrent herpes and one without a history of recurrent herpes. Relevance for stress research is discussed.
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Affiliation(s)
- D D Schmidt
- Department of Family Medicine, University of Connecticut School of Medicine, Farmington 06032
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Abstract
Captopril has not yet been included in the list of drugs causing hypersensitivity lung disease. We report a patient with hypertension, congestive heart failure, and chronic renal failure who, when rechallenged with captopril, developed upper lung field infiltrates associated with productive cough and striking peripheral eosinophilia. Gallium scan, transbronchial biopsy histologic findings, and direct immunofluorescent study were consistent with an immune-complex-mediated hypersensitivity reaction. There was no other etiology discovered for the patient's eosinophilia, nor was there evidence for an infectious etiology to explain his presentation.
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Affiliation(s)
- P L Schatz
- Saint Francis Hospital and Medical Center, Hartford, CT 06105
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Hyun J. Specificity and sensitivity of flow cytometry in analysis of lymphoid tissue by immunophenotyping: my experience has been different. Am J Clin Pathol 1987; 88:538-9. [PMID: 3310611 DOI: 10.1093/ajcp/88.4.538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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Walter RJ, Hyun J. Increased viability and differentiation of normal and dystrophic striated muscle in vitro. In Vitro Cell Dev Biol 1986; 22:535-41. [PMID: 3759795 DOI: 10.1007/bf02621140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Primary cultures of muscle from normal (line 412) and dystrophic (line 413) chick embryos were exposed to corticosterone-21-acetate (C-21-A) or sodium ibuprofen (Motrin) for 28 d after myotube formation. Ibuprofen (0.5 to 500 micrograms/ml) or C-21-A (0.4 to 40 micrograms/ml)-treated cultures were fixed and assessed semiquantitatively using phase microscopy. On this basis, ibuprofen (50 micrograms/ml) and C-21-A (40 micrograms/ml) seemed to be effective in maintaining both normal and dystrophic muscle cultures. Using ibuprofen and C-21-A at these concentrations, experiments were repeated and analyzed quantitatively. Ibuprofen maintained culture viability (up to 68% more myotubes than untreated controls) but had no significant effect on the number of striated cells. C-21-A effectively maintained culture viability (up to 73% increase) and strongly promoted the formation of striated cells in these cultures (up to a sixfold increase). Both normal and dystrophic cultures were affected similarly by these agents, but the dystrophic cultures showed more consistent if not more extensive improvements in the parameters examined here. Thus, it seems that ibuprofen and C-21-A may affect both normal and dystrophic muscle directly to maintain survival and even promote differentiation.
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Hyun J. Specific proteins precipitated by polyethylene glycol during assays for circulating C1q precipitable immune complexes. Am J Clin Pathol 1983; 80:777-8. [PMID: 6605678 DOI: 10.1093/ajcp/80.5.777] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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Aloisi RM, Hyun J. Immunodiagnostics. Introduction. Lab Res Methods Biol Med 1983; 8:ix-xi. [PMID: 6358737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Hyun J, Galen MA. Acute interstitial nephritis. A case characterized by increase in serum IgG, IgM, and IgE concentrations. Eosinophilia, and IgE deposition in renal tubules. Arch Intern Med 1981; 141:679-81. [PMID: 7224753 DOI: 10.1001/archinte.141.5.679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A case of acute interstitial nephritis with a distinct immunopathologic pattern was seen. The relevant findings included elevated levels of serum IgG, IgM, and IgE; persistent eosinophilia; prominent granular and electron-dense depositions of IgE and C3 in renal tubules, as demonstrated by direct immunofluorescent and electron microscopic procedures; persistent failure to demonstrate anti-basement membrane antibodies (both glomerular and tubular); and hypocomplementemia. The findings in our case suggest a type of acute interstitial nephritis with a somewhat different clinical outlook. In this respect, serial assays of complement components and IgE in serum and kidney tissue and determinations of circulating anti-basement membrane antibodies (both glomerular and tubular) may be of particular importance.
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50
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Hyun J. Problems of laser nephelometry in human lysozyme assay. Clin Chem 1978; 24:176. [PMID: 618657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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