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Kim KH, Lim SH, Hwang JH, Lee J. Inhibition of Glial Activation and Subsequent Reduction in White Matter Damage through Supplementation with a Combined Extract of Wheat Bran, Citrus Peel, and Jujube in a Rat Model of Vascular Dementia. Curr Issues Mol Biol 2024; 46:1485-1502. [PMID: 38392214 PMCID: PMC10888096 DOI: 10.3390/cimb46020096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/02/2024] [Accepted: 02/08/2024] [Indexed: 02/24/2024] Open
Abstract
Vascular dementia (VaD) is the second most common type of dementia after Alzheimer's disease. In our previous studies, we showed that wheat bran extract (WBE) reduced white matter damage in a rat VaD model and improved memory in a human clinical trial. However, starch gelatinization made the large-scale preparation of WBE difficult. To simplify the manufacturing process and increase efficacy, we attempted to find a decoction containing an optimum ratio of wheat bran, sliced citrus peel, and sliced jujube (WCJ). To find an optimal ratio, the cell survival of C6 (rat glioma) cultured under hypoxic conditions (1% O2) was measured, and apoptosis was assessed. To confirm the efficacies of the optimized WCJ for VaD, pupillary light reflex, white matter damage, and the activation of astrocytes and microglia were assessed in a rat model of bilateral common carotid artery occlusion (BCCAO) causing chronic hypoperfusion. Using a combination of both searching the literature and cell survival experiments, we chose 6:2:1 as the optimal ratio of wheat bran to sliced citrus peel to sliced jujube to prepare WCJ. We showed that phytic acid contained only in wheat bran can be used as an indicator component for the quality control of WCJ. We observed in vitro that the WCJ treatment improved cell survival by reducing apoptosis through an increase in the Bcl-2/Bax ratio. In the BCCAO experiments, the WCJ-supplemented diet prevented astrocytic and microglial activation, mitigated myelin damage in the corpus callosum and optic tract, and, consequently, improved pupillary light reflex at dosages over 100 mg/kg/day. The results suggest that the consumption of WCJ can prevent VaD by reducing white matter damage, and WCJ can be developed as a safe, herbal medicine to prevent VaD.
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Affiliation(s)
- Ki Hong Kim
- Department of Neurosurgery, School of Medicine, Daegu Catholic University, Daegu 42105, Republic of Korea
| | - Sun-Ha Lim
- DigmBio, Inc., Seongnam 13486, Republic of Korea
| | - Jeong Hyun Hwang
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea
| | - Jongwon Lee
- Department of Biochemistry, School of Medicine, Daegu Catholic University, Daegu 42105, Republic of Korea
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Nguyen HP, Hwang JH, Sandor K, Yeung H. Trends in dermatologist outpatient evaluation and management services among Medicare beneficiaries. J Am Acad Dermatol 2022; 86:194-197. [PMID: 33508389 PMCID: PMC8313607 DOI: 10.1016/j.jaad.2021.01.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 01/13/2021] [Accepted: 01/19/2021] [Indexed: 01/03/2023]
Affiliation(s)
- Harrison P Nguyen
- Department of Dermatology, Emory University School of Medicine, Atlanta, Georgia
| | - Jeong Hyun Hwang
- Department of Dermatology, Emory University School of Medicine, Atlanta, Georgia
| | - Kaitlin Sandor
- Department of Dermatology, Emory University School of Medicine, Atlanta, Georgia
| | - Howa Yeung
- Department of Dermatology, Emory University School of Medicine, Atlanta, Georgia; Regional Telehealth Service, VA Veterans Integrated Service Network 7 Southeast Network, Decatur, Georgia.
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Park SH, Hwang JH. Arrested Pneumatization of the Sphenoid Sinus in the Skull Base. Brain Tumor Res Treat 2021; 9:40-43. [PMID: 33913272 PMCID: PMC8082288 DOI: 10.14791/btrt.2021.9.e2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 01/15/2021] [Accepted: 01/18/2021] [Indexed: 11/20/2022] Open
Abstract
We report 2 cases of arrested pneumatization of the sphenoid sinus, a normal variant commonly misdiagnosed as a serious condition of the skull base. A 65-year-old man visited a local clinic for regular checkups. Brain CT showed a non-expansile lesion of the soft tissue with a well-defined sclerotic margin in the clivus but without destruction or mass effect on the surrounding bony structures. Subsequent brain MRI revealed that the lesion within the clivus was a high-signal lesion on the T2-weighted image, containing a low-signal round mass seen on a high-intensity signal on the T1-weighted image without contrast enhancement. Thus, the lesion was considered to contain internal fat. A 70-year-old woman diagnosed with a tumor in the greater sphenoid bone visited our hospital. Her brain CT revealed a non-expansile lesion of mixed density and a well-demarcated lesion and internal curvilinear calcification in the left greater wing of the sphenoid bone. The margin was osteosclerotic and the adjacent bony structure was intact. Her brain MRI showed that the lesion within the greater sphenoid bone had multiple low-signal lesions within a high-signal lesion on the T2-weighted image, suggesting internal fat contents. The lesions were diagnosed as arrested pneumatization of the sphenoid sinus and no further examination or treatment was performed. Arrested pneumatization of the sphenoid sinus should be considered in the presence of non-expansile lesion with an osteosclerotic boundary and internal fat component in the skull base.
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Affiliation(s)
- Seong Hyun Park
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Korea.
| | - Jeong Hyun Hwang
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Korea
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Park SH, Hwang JH. Neuromyelitis Optica Spectrum Disorders Mimicking Multiple Brain Tumors. Brain Tumor Res Treat 2021; 9:35-39. [PMID: 33913271 PMCID: PMC8082284 DOI: 10.14791/btrt.2021.9.e1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 11/28/2020] [Accepted: 12/01/2020] [Indexed: 11/20/2022] Open
Abstract
We report a rare case of neuromyelitis optica spectrum disorders (NMOSD), mimicking multiple brain tumors. A 53-year-old woman presented with weakness and paresthesia in her right arm and leg. Upon admission, brain MRI showed about 10 multiple brain tumors, which had to be differentiated from multiple brain metastases, lymphoma, and high-grade glioma in both hemispheres. No primary cancer was found in the chest-abdomen-pelvis CT. Subsequent spine MRI revealed multifocal cord signal change involving C2–T7, suggesting myelitis. A decrease in visual acuity was noted when taking a medical history, and optic neuritis was diagnosed upon ophthalmologic examination. With clinical and radiological appearances, multiple brain and spinal cord lesions have been diagnosed as NMOSD. Steroid and immunosuppressive drugs were administered. We should consider the possibility of an autoimmune disease, such as NMOSD, involving the optic nerve, spinal cord, and central nervous system when multiple hemispheric tumefactive lesions are observed.
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Affiliation(s)
- Seong Hyun Park
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Korea.
| | - Jeong Hyun Hwang
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Korea
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Park S, Park SH, Hwang JH, Kim JH, Lee KH, Park SH, Shin JH, Pak SY, Kang JM. Low-dose CT angiography of the lower extremities: a comparison study of image quality and radiation dose. Clin Radiol 2020; 76:156.e19-156.e26. [PMID: 33256975 DOI: 10.1016/j.crad.2020.10.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/28/2020] [Indexed: 01/22/2023]
Abstract
AIM To investigate the image quality and radiation dose of ultralow-dose (ULD) and low-dose (LD) lower-extremity computed tomography (CT) angiography (LE-CTA) using the advanced modelled iterative reconstruction (ADMIRE) algorithm to detect peripheral arterial disease (PAD) in comparison with standard-dose (SD) CT. MATERIALS AND METHODS One hundred and seven consecutive patients were examined using LE-CTA at 70 kVp and a dual-source scanner to achieve three image sets using 30% (ULD), 70% (LD), and 100% (SD) tube loads. Qualitative analysis was conducted by examining the three image sets for overall quality. The image quality of arterial segments was analysed by two independent readers. In addition, the CT dose index (CTDIvol) was measured in the three image sets. RESULTS The mean overall quality scores were 3.4±0.6 for ULD CT, 3.9±0.3 for LD CT, and 3.9±0.2 for SD CT. Both readers scored the arterial segments as 2-4 (adequate-excellent) in the three image sets. In addition, 89.4% (93/104) and 54.8% (57/104) segments of PAD with calcified plaques were scored 4 between SD and LD CT and between SD and ULD CT, respectively, and 45.2% (47/104) segments had a lower score by one point in ULD CT compared with SD CT. The mean CTDIvol was 4.1±1.1 mGy for SD CT, 2.9±0.8 mGy for LD CT, and 1.2±0.3 mGy for ULD CT. CONCLUSIONS LD/ULD CT at 70 kVp using ADMIRE reconstruction enables a reduction in the radiation dose while enabling adequate evaluation or follow-up of PAD based on LE-CTA.
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Affiliation(s)
- S Park
- Department of Radiology, Gil Medical Center, Gachon University College of Medicine, 21, Namdong-daero 774beon-gil, Namdong-gu, Incheon, Republic of Korea
| | - S H Park
- Department of Radiology, Gil Medical Center, Gachon University College of Medicine, 21, Namdong-daero 774beon-gil, Namdong-gu, Incheon, Republic of Korea
| | - J H Hwang
- Department of Radiology, Gil Medical Center, Gachon University College of Medicine, 21, Namdong-daero 774beon-gil, Namdong-gu, Incheon, Republic of Korea.
| | - J H Kim
- Department of Radiology, Gil Medical Center, Gachon University College of Medicine, 21, Namdong-daero 774beon-gil, Namdong-gu, Incheon, Republic of Korea
| | - K H Lee
- Department of Radiology, Gil Medical Center, Gachon University College of Medicine, 21, Namdong-daero 774beon-gil, Namdong-gu, Incheon, Republic of Korea
| | - S H Park
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J H Shin
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S Y Pak
- Department of Biomedical Engineering, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J M Kang
- Department of Surgery, Gil Medical Center, Gachon University College of Medicine, 21, Namdong-daero 774beon-gil, Namdong-gu, Incheon, Republic of Korea
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Zhang Q, Stachelek SJ, Inamdar VV, Alferiev I, Nagaswami C, Weisel JW, Hwang JH, Meyerhoff ME. Studies of combined NO-eluting/CD47-modified polyurethane surfaces for synergistic enhancement of biocompatibility. Colloids Surf B Biointerfaces 2020; 192:111060. [PMID: 32450498 PMCID: PMC7572543 DOI: 10.1016/j.colsurfb.2020.111060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 03/15/2020] [Accepted: 04/13/2020] [Indexed: 12/22/2022]
Abstract
The blood compatibility of various intravascular (IV) devices (e.g., catheters, sensors, etc.) is compromised by activation of platelets that can cause thrombus formation and device failure. Such devices also carry a high risk of microbial infection. Recently, nitric oxide (NO) releasing polymers/devices have been proposed to reduce these clinical problems. CD47, a ubiquitously expressed transmembrane protein with proven anti-inflammation/anti-platelet properties when immobilized on polymeric surfaces, is a good candidate to complement NO release in both effectiveness and longevity. In this work, we successfully appended CD47 peptides (pepCD47) to the surface of biomedical grade polyurethane (PU) copolymers. SIRPα binding and THP-1 cell attachment experiments strongly suggested that the pepCD47 retains its biological properties when bound to PU films. In spite of the potentially high reactivity of NO toward various amino acid residues in CD47, the efficacy of surface-immobilized pepCD47 to prevent inflammatory cell attachment was not inhibited after being subjected to a high flux of NO for three days, demonstrating excellent compatibility of the two species. We further constructed a CD47 surface immobilized silicone tubing filled with NO releasing S-nitrosoglutathione/ascorbic acid (GSNO/AA) solution for synergistic biocompatibility evaluation. Via an ex vivo Chandler loop model, we demonstrate for the first time that NO release and CD47 modification could function synergistically at the blood/material interface and produce greatly enhanced anti-inflammatory/anti-platelet effects. This concept should be readily implementable to create a new generation of thromboresistant/antimicrobial implantable devices.
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Affiliation(s)
- Qi Zhang
- Department of Chemistry, The University of Michigan, Ann Arbor, MI 48109-1055, United States
| | - Stanley J Stachelek
- Division of Cardiology-Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, United States; Perelman School of Medicine, The University of Pennsylvania, Philadelphia, PA, 19104, United States
| | - Vaishali V Inamdar
- Division of Cardiology-Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, United States; Perelman School of Medicine, The University of Pennsylvania, Philadelphia, PA, 19104, United States
| | - Ivan Alferiev
- Division of Cardiology-Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, United States; Perelman School of Medicine, The University of Pennsylvania, Philadelphia, PA, 19104, United States
| | - Chandrasekaran Nagaswami
- Department of Cell and Developmental Biology, Perelman School of Medicine, The University of Pennsylvania, Philadelphia, PA, 19104, United States
| | - John W Weisel
- Department of Cell and Developmental Biology, Perelman School of Medicine, The University of Pennsylvania, Philadelphia, PA, 19104, United States
| | - Jeong Hyun Hwang
- Department of Chemistry, The University of Michigan, Ann Arbor, MI 48109-1055, United States
| | - Mark E Meyerhoff
- Department of Chemistry, The University of Michigan, Ann Arbor, MI 48109-1055, United States
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Yoon SY, Park KS, Hwang JH, Park SH, Han MH. Sinonasal Teratocarcinosarcoma, a Rare Tumor Involving Both the Nasal Cavity and the Cranial Cavity. Brain Tumor Res Treat 2020; 8:57-61. [PMID: 32390355 PMCID: PMC7221467 DOI: 10.14791/btrt.2020.8.e2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 12/24/2019] [Accepted: 01/16/2020] [Indexed: 11/23/2022] Open
Abstract
Sinonasal teratocarcinosarcoma (SNTCS), a very rare tumor, is known to be a heterogeneous with epithelial, mesenchymal, and neuroepithelial components and shows a very aggressive clinical course. Due to the heterogeneity of this tumor, it is often misdiagnosed. No definitive treatment modality has been reported because it is a very rare tumor. A 44-year-old man presented to a rhinologist with headache and nasal obstruction, and an intranasal tumor was found that invaded into the cranial cavity. He underwent combined surgery with a rhinologist and a neurosurgeon following cognitive decline that worsened after a transnasal biopsy. The patient was diagnosed with SNTCS and underwent radiotherapy. However, residual tumor was found during radiotherapy and additional chemotherapy was administered. Follow-up brain MRI revealed no remnant or recurrent lesion. SNTCS is a tumor that has not yet been well researched and should be further investigated for proper treatment.
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Affiliation(s)
- Sang Youl Yoon
- Department of Neurosurgery, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
| | - Ki Su Park
- Department of Neurosurgery, Kyungpook National University Chilgok Hospital, Kyungpook National University School of Medicine, Daegu, Korea
| | - Jeong Hyun Hwang
- Department of Neurosurgery, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea.
| | - Seong Hyun Park
- Department of Neurosurgery, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
| | - Man Hoon Han
- Department of Pathology, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
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Park KS, Yoon SY, Park SH, Hwang JH. Anti-Migration and Anti-Invasion Effects of Curcumin via Suppression of Fascin Expression in Glioblastoma Cells. Brain Tumor Res Treat 2019; 7:16-24. [PMID: 31062527 PMCID: PMC6504753 DOI: 10.14791/btrt.2019.7.e28] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 01/25/2019] [Accepted: 02/22/2019] [Indexed: 12/16/2022] Open
Abstract
Background The natural compound curcumin was known to inhibit migration and invasion of glioblastoma (GBM) cells. Fascin, a kind of actin-binding proteins, is correlated with migration and invasion of GBM cells. The purpose of this study was to investigate anti-migration and anti-invasion effects of curcumin via suppression of fascin expression in GBM cells. Methods U87 cell line was used as an experimental model of GBM. Fascin was quantified by Western blot analysis. And, the signal transducer and activator of transcription 3 (STAT3), known to play an important role in migration and invasion of tumor cells, were analyzed by sandwich-ELISA. Migration and invasion capacities were assessed by attachment, migration and invasion assays. Cellular morphology was demonstrated by immunofluorescence. Results At various concentrations of curcumin and exposure times, fascin expression decreased. After temporarily exposure to 10 µM/L curcumin during 6 hours as less invasive concentration and time, fascin expression temporarily decreased at 12 hours (18.4%, p=0.024), and since then recovered. And, the change of phosphrylated STAT3 level also reflected the temporarily decreased pattern of fascin expression at 12 hours (19.7%, p=0.010). Attachment, migration, and invasion capacities consistently decreased at 6, 12, and 24 hours. And, immunofluorescence showed the change of shape and the reduction of filopodia formation in cells. Conclusion Curcumin is likely to suppress the fascin expression in GBM cells, and this might be a possible mechanism for anti-migration and anti-invasion effects of Curcumin via inhibition of STAT3 phosphorylation.
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Affiliation(s)
- Ki Su Park
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sang Youl Yoon
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Seong Hyun Park
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jeong Hyun Hwang
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea.
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Park SH, Park KS, Hwang JH. Arachnoid Granulations Mimicking Multiple Osteolytic Bone Lesions in the Occipital Bone. Brain Tumor Res Treat 2018; 6:68-72. [PMID: 30381919 PMCID: PMC6212694 DOI: 10.14791/btrt.2018.6.e8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 06/16/2018] [Accepted: 08/06/2018] [Indexed: 11/21/2022] Open
Abstract
We report a rare case of arachnoid granulations mimicking multiple osteolytic bone lesions. A 66-year-old woman was admitted to a local clinic for a regular checkup. Upon admission, brain CT showed multiple osteolytic lesions in the occipital bone. These needed to be differentiated from multiple osteolytic bone tumor. Subsequent brain MRI revealed that the osteolytic lesions were isointense to cerebrospinal fluid, hyperintense on T2-weighted image, hypointense on T1-weighted image, and with subtle capsules around the osteolytic lesions that were visible after gadolinium injection. A bone scan revealed no radiotracer uptake. The lesions were in both the transverse sinuses and the torcular herophili. With typical radiological appearances of the lesions, the osteolytic lesions were diagnosed as multiple arachnoid granulations. No further treatment was planned. A 1-year follow-up brain CT scan revealed no change. We should consider the possibility of arachnoid granulations when multiple osteolytic lesions are observed in the occipital bone.
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Affiliation(s)
- Seong Hyun Park
- Department of Neurosurgery, Kyungpook National University School of Medicine, Kyungpook National University Hospital, Daegu, Korea.
| | - Ki Su Park
- Department of Neurosurgery, Kyungpook National University School of Medicine, Kyungpook National University Hospital, Daegu, Korea
| | - Jeong Hyun Hwang
- Department of Neurosurgery, Kyungpook National University School of Medicine, Kyungpook National University Hospital, Daegu, Korea
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Zaharia OP, Pesta D, Bobrov P, Kupriyanova Y, Bódis K, Markgraf D, Hwang JH, Burkart V, Müssig K, Roden M, Szendroedi J. Assoziation von muskuloskelettaler Einschränkung mit Betazell-Dysfunktion bei Patienten mit Typ-2-Diabetes und Arthrose. DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1641874] [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: 10/28/2022]
Affiliation(s)
- OP Zaharia
- Deutsches Diabetes-Zentrum (DDZ), Düsseldorf, Germany
- Deutsches Zentrum für Diabetes Forschung (DZD e.V.), München-Neuherberg, Germany
| | - D Pesta
- Deutsches Diabetes-Zentrum (DDZ), Düsseldorf, Germany
- Deutsches Zentrum für Diabetes Forschung (DZD e.V.), München-Neuherberg, Germany
| | - P Bobrov
- Deutsches Diabetes-Zentrum (DDZ), Düsseldorf, Germany
- Deutsches Zentrum für Diabetes Forschung (DZD e.V.), München-Neuherberg, Germany
| | - Y Kupriyanova
- Deutsches Diabetes-Zentrum (DDZ), Düsseldorf, Germany
- Deutsches Zentrum für Diabetes Forschung (DZD e.V.), München-Neuherberg, Germany
| | - K Bódis
- Deutsches Diabetes-Zentrum (DDZ), Düsseldorf, Germany
- Deutsches Zentrum für Diabetes Forschung (DZD e.V.), München-Neuherberg, Germany
| | - D Markgraf
- Deutsches Diabetes-Zentrum (DDZ), Düsseldorf, Germany
- Deutsches Zentrum für Diabetes Forschung (DZD e.V.), München-Neuherberg, Germany
| | - JH Hwang
- Deutsches Diabetes-Zentrum (DDZ), Düsseldorf, Germany
- Deutsches Zentrum für Diabetes Forschung (DZD e.V.), München-Neuherberg, Germany
| | - V Burkart
- Deutsches Diabetes-Zentrum (DDZ), Düsseldorf, Germany
- Deutsches Zentrum für Diabetes Forschung (DZD e.V.), München-Neuherberg, Germany
| | - K Müssig
- Deutsches Diabetes-Zentrum (DDZ), Düsseldorf, Germany
- Deutsches Zentrum für Diabetes Forschung (DZD e.V.), München-Neuherberg, Germany
- Klinik für Endokrinologie und Diabetologie, Medizinische Fakultät, Heinrich-Heine-Universität, Düsseldorf, Germany
| | - M Roden
- Deutsches Diabetes-Zentrum (DDZ), Düsseldorf, Germany
- Deutsches Zentrum für Diabetes Forschung (DZD e.V.), München-Neuherberg, Germany
- Klinik für Endokrinologie und Diabetologie, Medizinische Fakultät, Heinrich-Heine-Universität, Düsseldorf, Germany
| | - J Szendroedi
- Deutsches Diabetes-Zentrum (DDZ), Düsseldorf, Germany
- Deutsches Zentrum für Diabetes Forschung (DZD e.V.), München-Neuherberg, Germany
- Klinik für Endokrinologie und Diabetologie, Medizinische Fakultät, Heinrich-Heine-Universität, Düsseldorf, Germany
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Bódis K, Lundbom J, Jelenik T, Markgraf D, Strom A, Zaharia OP, Karusheva Y, Burkart V, Müssig K, Kupriyanova Y, Ouni M, Hwang JH, Ziegler D, Schürmann A, Roden M, Szendroedi J. Reduzierte Stearoyl-CoA-Desaturase-1 und hormonsensitive Lipase-Genexpression im oberflächlichen subkutanen Fettgewebe bei männlichen, aber nicht weiblichen Patienten mit Typ-2-Diabetes. DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1641829] [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: 10/28/2022]
Affiliation(s)
- K Bódis
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - J Lundbom
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - T Jelenik
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - D Markgraf
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - A Strom
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - OP Zaharia
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - Y Karusheva
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - V Burkart
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - K Müssig
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Klinik für Endokrinologie und Diabetologie, Medizinische Fakultät, Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Y Kupriyanova
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - M Ouni
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Deutsches Institut für Ernährungsforschung (DIfE), Potsdam-Rehbrücke, Germany
| | - JH Hwang
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - D Ziegler
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - A Schürmann
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Deutsches Institut für Ernährungsforschung (DIfE), Potsdam-Rehbrücke, Germany
| | - M Roden
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Klinik für Endokrinologie und Diabetologie, Medizinische Fakultät, Heinrich-Heine-Universität, Düsseldorf, Germany
| | - J Szendroedi
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum an der Heinrich-Heine-Universität, Leibniz-Zentrum für Diabetes-Forschung, Düsseldorf, Germany
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
- Klinik für Endokrinologie und Diabetologie, Medizinische Fakultät, Heinrich-Heine-Universität, Düsseldorf, Germany
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12
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Ahn JK, Hwang J, Hwang JH, Yoon WT, Chung PW, Ryu S. The association between serum uric acid and asymptomatic intracranial arterial stenosis in middle-aged Koreans. Nutr Metab Cardiovasc Dis 2018; 28:14-22. [PMID: 29191476 DOI: 10.1016/j.numecd.2017.10.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 09/07/2017] [Accepted: 10/17/2017] [Indexed: 12/27/2022]
Abstract
BACKGROUND AND AIMS Intracranial arterial stenosis (ICAS) is one of the most common causes of stroke, especially in Asians. Hyperuricemia has been associated with an increased risk of comorbidities such as metabolic syndrome or cardiovascular diseases. However, there are few studies focusing on the association between serum uric acid (SUA) levels and asymptomatic ICAS. The aim of this study was to explore the association between SUA and the prevalence of ICAS in middle-aged Korean health screening examinees. METHODS AND RESULTS A cross-sectional study was performed on 9417 males and 7755 females who underwent a comprehensive health examination including transcranial Doppler (TCD) ultrasonography. The association of SUA and ICAS was analyzed using multivariate logistic regression. The prevalence of ICAS among the total examinee population was 3.55%. In females, the multivariate-adjusted odds ratio for ICAS was 1.52 (confidence interval 1.13-2.04) in the 3rd quartile of SUA and 1.45 (1.05-2.00) in the highest quartile, compared to the reference (P for trend 0.008). This trend was evident in all clinically relevant subgroups evaluated, including women with low inflammation status. SUA was not significantly associated with the prevalence of ICAS among males. In a sensitivity analysis, the multivariate-adjusted odds ratio of middle cerebral artery stenosis in females was 1.60 (1.09-2.37) in the highest quartile compared to the reference (P for trend 0.023). CONCLUSIONS Higher SUA level was associated with increased risk of ICAS among middle-aged females but not males. A further cohort study is warranted to elucidate the effect of SUA on asymptomatic ICAS.
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Affiliation(s)
- J K Ahn
- Division of Rheumatology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea.
| | - J Hwang
- Department of Internal Medicine, National Police Hospital, Seoul, South Korea
| | - J H Hwang
- Center for Health Promotion, Samsung Medical Center, Seoul, South Korea
| | - W T Yoon
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - P W Chung
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - S Ryu
- Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea; Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea; Department of Clinical Research Design & Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea.
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13
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Song JE, Kwak YG, Um TH, Cho CR, Kim S, Park IS, Hwang JH, Kim N, Oh GB. Outbreak of Burkholderia cepacia pseudobacteraemia caused by intrinsically contaminated commercial 0.5% chlorhexidine solution in neonatal intensive care units. J Hosp Infect 2017; 98:295-299. [PMID: 28935523 DOI: 10.1016/j.jhin.2017.09.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 09/13/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND Burkholderia cepacia is intrinsically resistant to certain antiseptics. The authors noted a sudden increase in the frequency of isolation of B. cepacia from blood cultures in a neonatal intensive care unit (NICU) of a university-affiliated hospital. AIM To identify the source and intervene in the ongoing infections. METHODS The cases were defined as patients with positive blood cultures for B. cepacia in an NICU between November 2014 and January 2015. Medical records were reviewed and NICU healthcare workers were interviewed. Samples of suspected antiseptics, blood culture bottles, cotton balls, gauze and a needle used in the NICU were analysed microbiologically. FINDINGS During the outbreak period, B. cepacia was identified in 25 blood cultures obtained from 21 patients. The clinical features of the patients were suggestive of pseudobacteraemia. Regarding environmental samples, B. cepacia was cultured from 0.5% chlorhexidine gluconate (CHG) solution products that had been used as a skin antiseptic during blood drawing in the NICU. The clinical B. cepacia isolate and two strains obtained from 0.5% CHG exhibited identical pulsed-field gel electrophoresis patterns. After the CHG products were withdrawn, the outbreak was resolved. CONCLUSIONS The pseudobacteraemia cases were caused by contaminated 0.5% CHG produced by a single manufacturer. Stricter government regulation is needed to prevent contamination of disinfectants during manufacturing. In addition, microbial contamination of antiseptics and disinfectants should be suspected when a B. cepacia outbreak occurs in hospitalized patients.
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Affiliation(s)
- J E Song
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea; Infection Control Office, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea; Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y G Kwak
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea; Infection Control Office, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea.
| | - T H Um
- Department of Laboratory Medicine, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
| | - C R Cho
- Department of Laboratory Medicine, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea; Infection Control Office, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
| | - S Kim
- Department of Laboratory Medicine, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
| | - I S Park
- Department of Laboratory Medicine, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
| | - J H Hwang
- Department of Paediatrics, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
| | - N Kim
- Department of Paediatrics, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea; Infection Control Office, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
| | - G-B Oh
- Infection Control Office, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
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14
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Yu GE, Kwon S, Hwang JH, An SM, Park DH, Kang DG, Kim TW, Kim IS, Park HC, Ha J, Kim CW. Effects of cell death-inducing DFF45-like effector B on meat quality traits in Berkshire pigs. Genet Mol Res 2017; 16:gmr-16-02-gmr.16029408. [PMID: 28549200 DOI: 10.4238/gmr16029408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cell death-inducing DFF45-like effector (CIDE) B is a member of the CIDE family of apoptosis-inducing factors. In the present study, we detected a single nucleotide polymorphism (SNP), c.414G>A, which corresponds to the synonymous SNP 414Arg, in CIDE-B in the Berkshire pigs. We also analyzed the relationships between the CIDE-B SNP and various meat quality traits. The SNP was significantly associated with post-mortem pH24h, water-holding capacity (WHC), fat content, protein content, drip loss, post-mortem temperature at 12 h (T12) and 24 h (T24) in a co-dominant model (P < 0.05). A significant association was detected between the SNP and post-mortem pH24h, fat content, protein content, drip loss, shear force, and T24 in gilts; and color parameter b*, WHC, and T24 in barrows (P < 0.05). The SNP was significantly correlated with the fat content, and CIDE-B mRNA expression was significantly upregulated during the early stage of adipogenesis, suggesting that CIDE-B may contribute towards initiation of adipogenesis (P < 0.05). Furthermore, CIDE-B mRNA was strongly expressed in the liver, kidney, large intestine, and small intestine, and weakly expressed in the stomach, lung, spleen, and white adipose tissue. These results indicate that the CIDE-B SNP is closely associated with meat quality traits and may be a useful DNA marker for improving pork quality.
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Affiliation(s)
- G E Yu
- Swine Science and Technology Center, , , South Korea
| | - S Kwon
- Swine Science and Technology Center, , , South Korea
| | - J H Hwang
- Swine Science and Technology Center, , , South Korea
| | - S M An
- Swine Science and Technology Center, , , South Korea
| | - D H Park
- Swine Science and Technology Center, , , South Korea
| | - D G Kang
- Swine Science and Technology Center, , , South Korea
| | - T W Kim
- Swine Science and Technology Center, , , South Korea
| | - I-S Kim
- Department of Animal Resources Technology, Gyeongnam National University of Science and Technology, Gyeongnam, South Korea
| | - H C Park
- Dasan Pig Breeding Co., Namwon-si, South Korea
| | - J Ha
- Swine Science and Technology Center, , , South Korea
| | - C W Kim
- Swine Science and Technology Center, , , South Korea
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15
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Weber KS, Straßburger K, Fritsch M, Bierwagen A, Pacini G, Hwang JH, Szendroedi J, Müssig K, Roden M. Effekte der Inkretin- und Glukagon-Sekretion auf den hepatischen Energiestoffwechsel bei Adipositas und Typ-2-Diabetes. DIABETOL STOFFWECHS 2017. [DOI: 10.1055/s-0037-1601613] [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: 10/19/2022]
Affiliation(s)
- KS Weber
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetesforschung an der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - K Straßburger
- Deutsches Zentrum für Diabetesforschung (DZD), München-Neuherberg, Germany
| | - M Fritsch
- Universitätsklinikum für Kinder- und Jugendheilkunde, Medizinische Universität Wien, Wien, Austria
| | - A Bierwagen
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetesforschung an der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - G Pacini
- Institute of Neuroscience, National Research Council (CNR), Padua, Italy
| | - JH Hwang
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetesforschung an der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - J Szendroedi
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetesforschung an der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - K Müssig
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetesforschung an der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - M Roden
- Institut für Klinische Diabetologie, Deutsches Diabetes-Zentrum, Leibniz-Zentrum für Diabetesforschung an der Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
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16
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Lee KT, Bang SI, Pyon JK, Hwang JH, Mun GH. Method of breast reconstruction and the development of lymphoedema. Br J Surg 2016; 104:230-237. [DOI: 10.1002/bjs.10397] [Citation(s) in RCA: 12] [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] [Received: 03/15/2016] [Revised: 05/07/2016] [Accepted: 09/06/2016] [Indexed: 11/11/2022]
Abstract
Abstract
Background
Several studies have demonstrated an association between immediate autologous or implant-based breast reconstruction and a reduced incidence of lymphoedema. However, few of these have ocused specifically on whether the reconstruction method affects the development of lymphoedema. The study evaluated the potential impact of breast reconstruction modality on the incidence of lymphoedema.
Methods
Outcomes of women with breast cancer who underwent mastectomy and immediate reconstruction using an autologous flap or a tissue expander/implant between 2008 and 2013 were reviewed. Arm or hand swelling with pertinent clinical signs of lymphoedema and excess volume compared with those of the contralateral side was diagnosed as lymphoedema. The cumulative incidence of lymphoedema was estimated by the Kaplan–Meier method. Clinicopathological factors associated with the development of lymphoedema were investigated by Cox regression analysis.
Results
A total of 429 reconstructions (214 autologous and 215 tissue expander/implant) were analysed; the mean follow-up of patients was 45·3 months. The two groups had similar characteristics, except that women in the autologous group were older, had a higher BMI, and more often had preoperative radiotherapy than women in the tissue expander/implant group. Overall, the 2-year cumulative incidence of lymphoedema was 6·8 per cent (autologous 4·2 per cent, tissue expander/implant 9·3 per cent). Multivariable analysis demonstrated that autologous reconstruction was associated with a significantly reduced risk of lymphoedema compared with that for tissue expander/implant reconstruction. Axillary dissection, a greater number of dissected lymph nodes and postoperative chemotherapy were also independent risk factors for lymphoedema.
Conclusion
The method of breast reconstruction may affect subsequent development of lymphoedema.
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Affiliation(s)
- K-T Lee
- Department of Plastic Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - S I Bang
- Department of Plastic Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J-K Pyon
- Department of Plastic Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J H Hwang
- Department of Physical and Rehabilitation Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - G-H Mun
- Department of Plastic Surgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, South Korea
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17
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Jo JL, Hwang JH, Kwon SG, Park DH, Kim TW, Kang DG, Yu GE, Kim IS, Ha JG, Kim CW. Association between a non-synonymous HSD17B4 single nucleotide polymorphism and meat-quality traits in Berkshire pigs. Genet Mol Res 2016; 15:gmr-15-gmr15048970. [PMID: 27819726 DOI: 10.4238/gmr15048970] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Single nucleotide polymorphisms (SNPs) are useful genetic markers that allow correlation of genetic sequences with phenotypic traits. It is shown here that HSD17B4, a bifunctional enzyme mediating dehydrogenation and anhydration during β-oxidation of long-chain fatty acids, contains a non-synonymous SNP (nsSNP) of chr2:128,825,976A>G, c.2137A>G, I690V, within the sterol carrier protein-2 domain of the HSD17B4 gene, by RNA-Seq of liver RNA. The HSD17B4 mRNA was highly expressed in the kidney and liver among various other tissues in four pig breeds, namely, Berkshire, Duroc, Landrace, and Yorkshire. The nsSNP was significantly associated with carcass weight, backfat thickness, and drip loss (P < 0.05). Furthermore, HSD17B4 may play a crucial role during the early stages of myogenesis when expression of its mRNA was significantly high. In conclusion, HSD17B4 may serve as a possible regulator of muscle development, and its identification should help to select for improved economic traits of Berkshire pigs such as carcass weight, backfat thickness, and drip loss.
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Affiliation(s)
- J L Jo
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - J H Hwang
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - S G Kwon
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - D H Park
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - T W Kim
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - D G Kang
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - G E Yu
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - I S Kim
- Department of Animal Resource Technology, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - J G Ha
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
| | - C W Kim
- Swine Science and Technology Center, Gyeongnam National University of Science & Technology, Jinju, South Korea
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Abstract
A lymphatic malformation (LM) is the most common form of congenital vascular malformation (CVM). The new Hamburg classification of CVM distinguishes the truncular (T) form from the extratruncular (ET) form of LMs. Both are consequences of a developmental arrest at the different stages of lymphangiogenesis as a result of defective genes. The purpose of this review was to evaluate the current management results of both forms of LMs. A retrospective review of the clinical data of 315 patients with a diagnosis of LMs treated between September 1994 and December 2001 was performed. Lymphoscintigraphy was the most frequent diagnostic test. The patients with the ET form were treated with sclerotherapy with OK-432 and/or ethanol. Combinations of CDP (complex decongestive physiotherapy) and/or compressotherapy were used to treat all the T-form patients. In addition, surgery, either reconstructive or ablative, was offered to patients with the T form who failed to respond to the proper CDP. A multidisciplinary team performed the management of LM, and the results were evaluated every 6 months. Among 797 patients with CVM, 315 were confirmed to have LMs, either as the T form (226) or the ET form (89). Another 66 LMs were diagnosed with hemolymphatic malformations (HLM). Most of the ET forms (89/315) were the cystic type (70/89), while the T forms included aplasia and/or an obstruction (204/226). The ET form was most frequent in the head, neck, and thorax (69/89). The T form was located most frequently to the extremities (202/226), mostly to the lower limb (180/202). Two hundred and twenty-six T forms belonged to the various clinical stages: stages I-32, II-104, III-48, IV-18, and an unclear stage-24. The ET form was treated with sclerotherapy using OK-432 (108/120) and absolute ethanol (12/120). Among the 11 patients with the multiple ET form, 7 patients underwent perioperative sclerotherapy with OK-432 and a subsequent surgical excision. The clinical response of the T form at the extremity to CDP was excellent to good in a majority of clinical stages I to II (121/136) but decreased to a good to fair degree in stages III to IV (31/66). The additional surgical therapy, either reconstructive (10/19) or ablative (9/19), provided limited success in improving CDP efficacy, owing mainly to poor compliance. The long-term outcome of the initial success through self-motivated home-maintenance care during the follow-up period of up to 48 months was totally dependent on patient compliance. OK-432 sclerotherapy to 51 ET forms has shown excellent results on 88.9% of the cystic type (40/45) and 50% (3/6) of the cavernous type (minimum follow-up for 24 months). Seventeen ET forms in 7 patients were treated with a preoperative OK-432 sclerotherapy and a subsequent surgical excision, which provided good to excellent results in 14 for a minimum of 24 months. Primary lymphedema, which is the T form of LMs, can be managed safely by a combination of CDP with compressotherapy. Patients with good compliance can benefit from additional surgical therapy, either reconstructive or ablative. The ET form, particularly the cystic type, can be treated with various scleroagents that are preferably less toxic as the primary therapy. A surgical excision with or without perioperative sclerotherapy provides good results for patients with the localized cavernous type of the ET form. A multidisciplinary team approach is essential for the proper care of LM.
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Affiliation(s)
- B B Lee
- Department of Surgery, Sungkyunkwan University School of Medicine and Samsung Medical Center, Seoul, Korea.
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19
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Abstract
UNLABELLED The aims of this study were to report functional outcomes of salvage procedures for patients with cerebral palsy (CP) who have chronic dislocation of the hip using validated scoring systems, and to compare the results of three surgical techniques. We reviewed 37 patients retrospectively. The mean age at the time of surgery was 12.2 years (8 to 22) and the mean follow-up was 56 months (24 to 114). Patients were divided into three groups: 14 who underwent proximal femoral resection arthroplasty (PFRA group 1), ten who underwent subtrochanteric valgus osteotomy (SVO group 2), and 13 who underwent subtrochanteric valgus osteotomy with resection of the femoral head (SVO with FHR group 3). All patients were evaluated using the Caregiver Priorities and Child Health Index of Life with Disabilities (CPCHILD) and the Pediatric Quality of Life Inventory (PedsQL). Significant improvements occurred in most CPCHILD and PedsQL subsection scores following surgery in all patients, without significant differences between the groups. There were 12 post-operative complications. Less severe complications were seen in group 1 than in groups 2 and 3. Salvage surgery appears to provide pain relief in patients with CP who have painful chronic dislocation of the hip. The three salvage procedures produced similar results, however, we recommend the use of PFRA as the complications are less severe. TAKE HOME MESSAGE Salvage surgery can be of benefit to patients with CP with chronic painful hip dislocation, but should be limited to selected patients considering complications.
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Affiliation(s)
- J H Hwang
- Severance Children's Hospital Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea
| | - L Varte
- Synod Hospital, Durtlang, Aizawl 796 025 Mizoram, India
| | - H W Kim
- Severance Children's Hospital Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea
| | - D H Lee
- Severance Children's Hospital Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea
| | - H Park
- Gangnam Severance Hospital Yonsei University College of Medicine, 211 Eonju-ro, Gangnam-gu, Seoul, 135-720, Korea
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Lee BS, Lee SH, Jang DK, Chung KH, Hwang JH, Jang SE, Cha BH, Ryu JK, Kim YT. Belching during gastroscopy and its association with gastroesophageal reflux disease. Dis Esophagus 2016; 29:342-9. [PMID: 25708811 DOI: 10.1111/dote.12326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Belching may result from transient lower esophageal sphincter relaxation; therefore, it has been proposed that belching may be a manifestation of gastroesophageal reflux disease (GERD). This study was conducted to investigate the frequency of belching during esophagogastroduodenoscopy (EGD) and its association with GERD. A retrospective review was performed on prospectively collected clinical and endoscopic data from 404 subjects who underwent EGD without sedation from December 2012 to May 2013 in a training hospital in Korea. All detectable belching events during endoscopy were counted. Frequency and severity of belching events were compared between the group with and without GERD using an ordinal logistic regression model. There were 145 GERD patients (26 erosive reflux disease and 119 nonerosive reflux disease [NERD]). In the multivariable analysis, GERD was significantly associated with a higher frequency of belching events (odds ratio = 6.59, P < 0.001). Central obesity, female, and younger age were also risk factors for frequent belching during EGD. Subgroup analyses were performed in subjects without erosive reflux disease (n = 378) and NERD (n = 293). NERD was also a predictive factor for frequent belching during EGD (odds ratio = 6.61, P < 0.001), and the frequency of belching was significantly correlated with GERD severity according to the Los Angeles classification (P < 0.05). Frequent belching during EGD was associated with GERD, including NERD. Future research should focus on its adjuvant role in the diagnosis of GERD/NERD and the necessity for applying differentiated endoscopy strategies for GERD patients, leading to less discomfort during EGD in patients at risk for intolerability.
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Affiliation(s)
- B S Lee
- Departments of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea.,Digestive Disease Center, Department of Internal Medicine, Cheju Halla General Hospital, Jeju, South Korea
| | - S H Lee
- Departments of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea
| | - D K Jang
- Departments of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea
| | - K H Chung
- Departments of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea
| | - J H Hwang
- Department of Internal Medicine, Busan Medical Center, Busan, South Korea
| | - S E Jang
- Department of Internal Medicine, Cheongju St. Mary's Hospital, Cheongju, South Korea
| | - B H Cha
- Digestive Disease Center, Department of Internal Medicine, Cheju Halla General Hospital, Jeju, South Korea
| | - J K Ryu
- Departments of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Y-T Kim
- Departments of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea
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Lee S, Lee JY, Hwang JH, Shin JH, Kim TH, Kim SK. Clinical importance of inflammatory facet joints of the spine in ankylosing spondylitis: a magnetic resonance imaging study. Scand J Rheumatol 2016; 45:491-498. [PMID: 27098409 DOI: 10.3109/03009742.2016.1150506] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVES The aims of this study were to assess the reliability of a novel magnetic resonance imaging (MRI) scoring system for inflammatory lesions of facet joints and to clarify the clinical significance of facet joint inflammation in ankylosing spondylitis (AS). METHOD A total of 53 AS patients (45 males, 84.9%) were assessed for active inflammatory lesions involving the facet joints, as indicated by bone marrow oedema, at 23 discovertebral units (DVUs) between C2 and S1 using a novel scale, the AS Activity of the Facet joint (ASAFacet). The reliability of the ASAFacet was evaluated using intraclass correlation coefficients (ICCs) and Bland-Altman plots. RESULTS ICC values for the ASAFacet scores were 0.857 [95% confidence interval (CI) 0.741-0.919] for inter-observer and 0.941 (95% CI 0.873-0.969) for intra-observer reliability. Inflammatory activity scores in facet joints were evenly distributed at all spine levels (p = 0.294 for ASAFacet), whereas vertebral body inflammation was more prominent in the thoracic spine than in the cervical and lumbar spine [p < 0.001 for the AS spine MRI activity (ASspiMRI-a) score, p = 0.002 for the Berlin method, and p < 0.001 for the Spondyloarthritis Research Consortium of Canada (SPARCC) MRI index]. ASAFacet scores were closely associated with erythrocyte sediment rate (ESR) and C-reactive protein (CRP) levels (p < 0.05, respectively). Patients with peripheral arthritis had fewer lesions involving the vertebral bodies or facet joints than patients without peripheral arthritis (p < 0.001 for the four different MRI activity indexes). CONCLUSIONS This study suggests that recognition of facet joint inflammation has the potential to contribute to our understanding of clinical outcomes in AS.
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Affiliation(s)
- S Lee
- a Department of Radiology , Hanyang University Hospital for Rheumatic Diseases , Seoul , South Korea
| | - J Y Lee
- a Department of Radiology , Hanyang University Hospital for Rheumatic Diseases , Seoul , South Korea
| | - J H Hwang
- b Department of Preventive Medicine , Catholic University of Daegu School of Medicine , Daegu , South Korea
| | - J H Shin
- c Hanyang University Hospital for Rheumatic Diseases , Seoul , South Korea
| | - T-H Kim
- c Hanyang University Hospital for Rheumatic Diseases , Seoul , South Korea
| | - S-K Kim
- d Division of Rheumatology, Department of Internal Medicine, Arthritis and Autoimmunity Research Centre , Catholic University of Daegu School of Medicine , Daegu , South Korea
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Hwang JH, Kim HW, Lee DH, Chung JH, Park H. One-stage rotational osteotomy for congenital radioulnar synostosis. J Hand Surg Eur Vol 2015; 40:855-61. [PMID: 25827142 DOI: 10.1177/1753193415580066] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 03/10/2015] [Indexed: 02/03/2023]
Abstract
We report the results of a one-stage rotational osteotomy of the proximal third of the ulna and distal third of the radius with segmental bone resection for treating congenital radioulnar synostosis. We retrospectively reviewed 25 patients (28 forearms) treated by operation. Patients were divided into two groups according to the method of internal fixation at the osteotomy sites. In Group 1 the ulnar osteotomy was stabilized with an intramedullary pin and in Group 2 no fixation was used. The average forearm position improved from 47° pronation before surgery, to 27° supination after surgery. There were no statistically significant differences between the two groups in surgical outcomes. One-stage rotational osteotomy of the proximal third of the ulna and distal third of the radius with segmental bone resection is a simple and safe treatment for patients with congenital radioulnar synostosis. Internal fixation at the osteotomy site seems to be unnecessary. Level of evidence: Level 4.
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Affiliation(s)
- J H Hwang
- Department of Orthopaedic Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - H W Kim
- Department of Orthopaedic Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - D H Lee
- Department of Orthopaedic Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - J H Chung
- Department of Orthopaedic Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - H Park
- Department of Orthopaedic Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Hong SM, Hwang JH, Kim IH. Effect of Medium-chain Triglyceride (MCT) on Growth Performance, Nutrient Digestibility, Blood Characteristics in Weanling Pigs. Asian-Australas J Anim Sci 2014; 25:1003-8. [PMID: 25049656 PMCID: PMC4092986 DOI: 10.5713/ajas.2011.11402] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Revised: 02/06/2012] [Accepted: 01/31/2012] [Indexed: 11/27/2022]
Abstract
One hundred and twenty weanling pigs in experiment 1 (Exp. 1) (6.91±0.99 kg; 21 d of age) and Exp. 2 (10.20±1.09 kg; 28 d of age) were used in two 42-d and 35-d experiments to evaluate the effect of medium-chain-triglyceride (MCT) on growth performance, apparent total tract digestibility (ATTD) of nutrients and blood profile. In both of Exp. 1 and Exp. 2, the same dietary treatments were utilized as follows : i) negative control (NC), ii) positive control (PC), NC+antibiotics (40 mg/kg Tiamulin, 110 mg/kg Tylosin, and 10 mg/kg Enramycin, iii) MCT3, NC+0.32% (phase 1, 2 and 3) MCT, and iv) MCT5, NC+0.55% (phase 1), 0.32% (phase 2 and 3) MCT. In Exp. 1, the pigs fed MCT5 diets had higher (p<0.05) ADG compared to NC treatment during the first 2 wk. From d 15 to 28, the ATTD of energy was improved (p<0.05) by MCT3 compared to the PC treatment. No effect has been observed on the blood profiles [red blood cell (RBC), white blood cell (WBC), immunoglobulin-G (IgG), lymphocyte concentration] measured in this study. In Exp. 2, the ADG were increased (p<0.05) by the MCT5 treatment than the PC treatment from d 0 to 14. Pigs fed PC treatment diet had lower ADFI (p<0.05) and better FCR (p<0.05) than NC treatment, whereas no differences were shown between MCT treatments and NC or PC treatment from d 15 to 35 and overall phase. The ATTD of DM and nitrogen were improved (p<0.05) by the effect of MCT5 related to the NC and PC treatment at the end of 2nd and 5th wk. The pigs fed MCT3 had higher (p<0.05) energy digestibility than PC treatment. No effects were seen in the blood profiles we measured (WBC, RBC, lymphocyte and immunoglobulin-G). In conclusion, the addition of MCT in the weanling pigs diet can improve the ADG and digestibility during the earlier period (first 2 wks), but had little effect on the blood characteristics.
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Affiliation(s)
- S M Hong
- Woosung Feed Cormpany, Ltd. Daejeon, Korea
| | - J H Hwang
- Woosung Feed Cormpany, Ltd. Daejeon, Korea
| | - I H Kim
- Woosung Feed Cormpany, Ltd. Daejeon, Korea
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Lee SB, Choi CW, Jin YC, Wang T, Lee KH, Ku MB, Hwang JH, Kim KH, Vega RSA, Lee HG. Effect of Oral Administration of Intact Casein on Gastrointestinal Hormone Secretion and Pancreatic α-Amylase Activity in Korean Native Steer. Asian-Australas J Anim Sci 2014; 26:654-60. [PMID: 25049835 PMCID: PMC4093330 DOI: 10.5713/ajas.2012.12510] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 02/14/2013] [Accepted: 11/15/2012] [Indexed: 11/27/2022]
Abstract
Three Korean native steers (779±24 kg) fitted with duodenal cannulas were used in a 3×3 Latin square design to investigate the influence of oral administration of soluble proteins, intact casein (IC) and acid hydrolyzed casein (AHC), on gastrointestinal hormone (GIH) secretion in the blood and pancreatic α-amylase activity in the duodenum. Oral treatment consisted of a basic diet (control), IC (C+100% protein), or AHC (C+80% amino acid, 20% peptide) for 21 d. Blood and duodenum samples were collected for measurement of serum GI hormones, and pancreatic α-amylase activity was determined at 900, 1030, 1330, 1630, and 1930 h after feeding on d 21 of treatment. The levels of serum cholecystokinin (CCK) and secretin in the IC treatment group were higher compared to the other treatment groups (p<0.05). In addition to the changes in CCK and secretin levels upon IC treatment, the pancreatic α-amylase activity in the duodenum was higher in the IC group compared to the control diet group (p<0.05). The response of serum ghrelin to IC and AHC treatment was in accordance with the response of serum secretin. The level of peptide fragments flowing in the duodenum was higher in the IC treatment group than the other treatment groups (p<0.05). In conclusion, this study demonstrated that an increase in duodenal CCK and secretin upon IC oral administration increased pancreatic α-amylase secretion. In addition, ghrelin may be associated with GI hormone secretion in Korean native steers.
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Affiliation(s)
- S B Lee
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - C W Choi
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - Y C Jin
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - T Wang
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - K H Lee
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - M B Ku
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - J H Hwang
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - K H Kim
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - R S A Vega
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - H G Lee
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
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Hong SM, Hwang JH, Kim IH. Evaluation of the effect of low dietary fermentable carbohydrate content on growth performance, nutrient digestibility, blood characteristics, and meat quality in finishing pigs. Asian-Australas J Anim Sci 2014; 25:1294-9. [PMID: 25049693 PMCID: PMC4092942 DOI: 10.5713/ajas.2011.11403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Revised: 06/01/2012] [Accepted: 02/29/2012] [Indexed: 11/27/2022]
Abstract
A total of 96 pigs (49.23±3.20 kg) were used in an 11 wk growth trial to evaluate the effect of fermentable carbohydrate (FC) content on growth performance, apparent total tract digestibility (ATTD) of nutrient, blood profile, and meat quality. The dietary treatments were: i) negative control (NC), basal diet, ii) positive control (PC), NC+antibiotics (positive control diet with 5 ppm flavomycin), iii) PCL, PC-13% lower FC, and iv) NCL, NC-13% lower FC. The growth performance (average daily gain, average daily feed intake, and gain/feed) didn’t differ among treatments through the whole experiment. These pigs fed the PCL diet had the greater (p<0.05) apparent total tract digestibility (ATTD) of dry matter than those from PC and NC treatment at the end of the experiment. No differences were observed in white blood cell (WBC), red blood cell (RBC), and lymphocyte concentration among different treatments. After the feeding period, meat samples were collected from the pigs at slaughter. The pigs in NCL and PCL treatments had greater (p<0.05) backfat thickness and lower lean percentage. The color value of loin was higher (p<0.05) in NCL treatment compared to PCL treatment. Also, the NCL treatment had higher (p<0.05) marbling value than PC treatment. The drip loss was depressed by PCL and NCL treatment comapared to NC treatments. The water holding capacity (WHC) was higher (p<0.05) in NC and PCL treatment. In conclusion, the low FC can improve digestibility and meat quality of finishing pigs.
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Affiliation(s)
- S M Hong
- Woosung Feed Co., Ltd. Daejeon, Korea
| | - J H Hwang
- Woosung Feed Co., Ltd. Daejeon, Korea
| | - I H Kim
- Woosung Feed Co., Ltd. Daejeon, Korea
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Yoo JH, Hwang JH, Chang JD, Oh JB. Management of traumatic labral tear in acetabular fractures with posterior wall component. Orthop Traumatol Surg Res 2014; 100:187-92. [PMID: 24568794 DOI: 10.1016/j.otsr.2013.12.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 12/10/2013] [Accepted: 12/13/2013] [Indexed: 02/02/2023]
Abstract
BACKGROUND Posterior labral tear is frequently encountered in acetabular fractures with posterior wall component (AFPWC). However, there has been very little information in the literature on the type and management of traumatic labral tears in AFPWC. HYPOTHESIS Traumatic labral tear is a constant intracapsular injury in AFPWC and can be repaired using adequate methods according to its type and size. MATERIALS AND METHODS A retrospective study of 14 patients (mean age 38 years [16-58]) who underwent open surgery for AFPWC was conducted using prospectively collected data. The types of posterior labral tear were investigated at intraoperative examination through the ruptured joint capsule or its extension, and were concomitantly managed. Surgical outcomes were clinically assessed using Merle d'Aubigné (PMA) score and Visual Analog Scale (VAS), and radiologically evaluated at final follow-up. RESULTS Posterior labral tears were present in all 14 patients. The types of labral tear were osseous avulsion and posterior root avulsion tear (n=9), longitudinal peripheral tear and posterior root avulsion tear (n=2), longitudinal peripheral tear (n=2), and osseous avulsion tear (n=1). All unstable labra in 12 patients (86%) were repaired. All avulsion tears of the posterior root were repaired using a suture anchor, longitudinal peripheral tears using suture fixation or/and suture anchors, and osseous avulsion tears using a spring plate. The mean PMA score and VAS were 16.4 (14-18) and 1.7 (0-3) at final follow-up, respectively. The radiologic grades at last follow-up were good or excellent in all patients. DISCUSSION All AFPWC in this study consistently revealed posterior labral tear. Posterior root avulsion tears accompanied with osseous avulsion was the most common type. Torn labra should be repaired as much as possible if unstable, considering the important functions of a normal labrum; fixation using a suture anchor may be useful for an avulsion tear of the posterior root. LEVEL OF EVIDENCE Level IV, therapeutic case series.
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Affiliation(s)
- J H Yoo
- Department of Orthopaedic Surgery, Hallym University Sacred Heart Hospital, 896 Pyeongchon-dong, Dongan-gu, Anyang 431-070, Republic of Korea.
| | - J H Hwang
- Department of Orthopaedic Surgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, 948-1 Daerim 1-dong, Yeongdeungpo-gu, Seoul 150-950, Republic of Korea
| | - J D Chang
- Department of Orthopaedic Surgery, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, 40 Seokwoo-dong, Hwasung 445-907, Republic of Korea
| | - J B Oh
- Department of Orthopaedic Surgery, Hallym University Sacred Heart Hospital, 896 Pyeongchon-dong, Dongan-gu, Anyang 431-070, Republic of Korea
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Periolo N, Guillén L, Arruvito ML, Alegre NS, Niveloni SI, Hwang JH, Bai JC, Cherñavsky AC. IL-15 controls T cell functions through its influence on CD30 and OX40 antigens in Celiac Disease. Cytokine 2014; 67:44-51. [PMID: 24680481 DOI: 10.1016/j.cyto.2014.01.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 12/09/2013] [Accepted: 01/11/2014] [Indexed: 01/19/2023]
Abstract
AIM To evaluate the ability of interleukin (IL)-15 to control T cell functions through its influence on CD30 and OX40 expressing cells in Celiac Disease (CD). In peripheral blood (PB), by examining the expression of OX40 in conventional effectors cells and T cells with a phenotypic specialization of regulatory cells [CD4+CD25high forkhead box protein 3 (Foxp3)+], and the co stimulation of IFN-γ and IL-4 production within CD30 and OX40 positive subsets of T cells. At the duodenal mucosa, by assessing the expression of CD30 and OX40 in intraepithelial (IE) and lamina propria (LP) lymphocytes (IEL, LPL). PATIENTS AND METHODS PB and duodenal mucosal biopsies were obtained from 38 patients with classic CD (Cel) and 38 healthy controls (HC). Analysis of cell surface and/or intracellular antigens was performed in anti-CD3-treated PB mononuclear cells (PBMC) before and after treatment with recombinant IL-15 (rIL-15), and in IE and LP cellular suspensions prepared from duodenal biopsies pre-treated with/without rIL-15. RESULTS A subpopulation of CD3+OX40+ T blasts was induced in Cel and HC by a 3days treatment of PBMC with anti-CD3 and decreased its size thereafter, regardless of the presence of rIL-15. However, the addition of rIL-15 to T blasts distinctively induced the survival of T cells with a regulatory phenotype that expresses OX40 antigen in Cel (p<0.05). Celiac patients showed higher frequencies of IFN-γ-producing CD3+CD30+ blasts before and after treatment with rIL-15 (p<0.05, vs. HC). IL-15 increased the frequencies of CD3+CD30+ LPL (HC: p<0.05, Cel: p<0.05) but not of CD3+OX40+ LPL, and CD30 or OX40 positive IEL. CONCLUSIONS The distinctive control of OX40+ cells with a T regulatory phenotype mediated by the influence of IL-15 comes out as new function of this cytokine in the context of CD. The higher production of IFN-γ by a subpopulation of peripheral CD3+CD30+ cells contributes to the type I biased immune response.
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Affiliation(s)
- N Periolo
- Instituto de Inmunología, Genética y Metabolismo, Hospital de Clínicas "José de San Martín", Universidad de Buenos Aires, Buenos Aires, Argentina
| | - L Guillén
- Instituto de Inmunología, Genética y Metabolismo, Hospital de Clínicas "José de San Martín", Universidad de Buenos Aires, Buenos Aires, Argentina
| | - M L Arruvito
- Instituto de Inmunología, Genética y Metabolismo, Hospital de Clínicas "José de San Martín", Universidad de Buenos Aires, Buenos Aires, Argentina
| | - N S Alegre
- Instituto de Inmunología, Genética y Metabolismo, Hospital de Clínicas "José de San Martín", Universidad de Buenos Aires, Buenos Aires, Argentina
| | - S I Niveloni
- Sección Intestino Delgado, Departamento de Medicina, Hospital de Gastroenterología "Dr. Carlos Bonorino Udaondo", Buenos Aires, Argentina
| | - J H Hwang
- Sección Intestino Delgado, Departamento de Medicina, Hospital de Gastroenterología "Dr. Carlos Bonorino Udaondo", Buenos Aires, Argentina
| | - J C Bai
- Sección Intestino Delgado, Departamento de Medicina, Hospital de Gastroenterología "Dr. Carlos Bonorino Udaondo", Buenos Aires, Argentina
| | - A C Cherñavsky
- Instituto de Inmunología, Genética y Metabolismo, Hospital de Clínicas "José de San Martín", Universidad de Buenos Aires, Buenos Aires, Argentina.
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Simon MC, Nowotny B, Strassburger K, Zivehe F, Nowotny P, Hwang JH, Kolb H, Stehle P, Holst JJ, Mac Kenzie C, Henrich B, Schloot N, Roden M. Endocrine and metabolic effects of dietary intake of probiotics in glucose tolerant humans. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336673] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kahl S, Straßburger K, Nowotny B, Livingstone R, Klüppelholz B, Hwang JH, Giani G, Pacini G, Gastaldelli A, Roden M. Importance of liver fat indices for diagnosis of hepatic steatosis. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336728] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kim YJ, Kim JY, Yoo SH, Min BJ, Chung KZ, Seo SS, Kang SB, Lim MC, Hwang JH, Yoo HJ, Park SY. High control rate for lymph nodes in cervical cancer treated with high-dose radiotherapy using helical tomotherapy. Technol Cancer Res Treat 2012; 12:45-51. [PMID: 22905806 DOI: 10.7785/tcrt.2012.500252] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The purpose of this study was to evaluate whether bulky lymphadenopathy located in the abdominopelvic cavity in cervical cancer can be controlled without severe toxicity by increasing radiation dose using helical tomotherapy. From January 2007 to December 2010, 26 patients with cervical cancer with metastatic lymph nodes (LNs) having at least one short diameter > 1.5 cm were treated with helical tomotherapy. A total of 58 LN sites were treated and the largest LN of each site was evaluated for response. Median follow-up time was 28 months (4-50 months). Median short diameter of the LNs was 1.7 cm (0.7-4.2 cm) with median radiation dose of 62.6 Gy(10) in 2 Gy equivalent dose (53.3-77.9 Gy(10)). Initial LN response was evaluated on imaging obtained within 4 months after radiotherapy. Initial complete response (CR), partial response (PR), and stable disease (SD) were observed in 54, 2 and 2 lesions, respectively. Recurrence occurred in two with CR and progression in one with PR. Therefore, final CR, PR, SD, and progression of disease were observed in 52, 1, 2, and 3, respectively. Actuarial 3-year LN progression-free survival and overall survival (OS) were 63% and 65%, respectively. Multivariate analysis revealed final LN response (CR vs. non-CR) as a strong prognostic factor for OS (p = 0.016). Radiation Therapy Oncology Group grade 2 or more acute and late toxicity was observed in 8 and 1 patients, respectively. The treatment of bulky lymphadenopathy using helical tomotherapy in advanced cervical cancer is highly effective and has acceptable toxicity.
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Affiliation(s)
- Y J Kim
- Research Institute and Hospital, _National Cancer Center, Goyang-si, Gyeonggi-do, South Korea.
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Kim SH, Kim DH, Kang H, Park JJ, Seong SH, Suk EH, Hwang JH. Estimation of the nares-to-epiglottis distance and the nares-to-vocal cords distance in young children. Br J Anaesth 2012; 109:816-20. [PMID: 22864519 DOI: 10.1093/bja/aes267] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Estimation of the nares-to-epiglottis and nares-to-vocal cords distances would facilitate the selection of properly sized nasopharyngeal airways and appropriate positioning of a fibreoptic bronchoscope in young children. The purposes of this study were to measure the nares-to-epiglottis and nares-to-vocal cords distances and to create an algorithm to predict these distances based on anatomical landmarks and paediatric characteristic data. METHODS Two hundred and eleven children, aged 1-10 yr, undergoing elective surgery were investigated. After induction of general anaesthesia, the distances from the nares to the epiglottis/vocal cords were measured using a nasogastric tube. After intubation, the distances from the lateral border of the nose to the ipsilateral mandible angle (nares-to-mandible distance) and the tragus of the ear (nares-to-tragus distance) were measured using a tape measure. RESULTS The nares-to-epiglottis and nares-to-vocal cords distances were significantly correlated with the age, weight, height, and external measurements (P<0.001). By stepwise multiple linear regression analysis, formulas were obtained for the nares-to-epiglottis distance (cm)=2.606+0.058×height (cm)+0.231×the nares-to-mandible distance (cm)-0.304 (gender) (r(2)=0.754) and for the nares-to-vocal cords distance (cm)=4.947+0.06×height (cm)+0.228×nares-to-mandible distance (cm)-0.283 (gender) (r(2)=0.803). CONCLUSIONS The nares-to-epiglottis and nares-to-vocal cords distances can be predicted using the height and the nares-to-mandible distance in young children. CLINICAL TRIAL REGISTRATION NUMBER Clinical Research Information Service KCT0000150.
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Affiliation(s)
- S H Kim
- Department of Anaesthesiology and Pain Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
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Abstract
The purpose of this study was to investigate the effects of Oolong tea drinking on the auditory functions in aged subjects. Retrospective cohort study was conducted on 265 subjects who were older than 55 years old. Tea drinking was determined from responses to a medical and food consumption questionnaires. The effects of Oolong tea drinking on pure tone thresholds (PTAs) for peripheral hearing and pitch pattern sequence (PPS) scores for central hearing were analyzed. Results showed that, before adjusting for other factors, PTAs were not significantly different between "non-tea drinkers" and "Oolong tea drinkes". But, the mean PPS score was higher in the "Oolong tea drinkers" (74.5 ± 12.7%) than in the "non-tea drinkers" (68.4 ± 13.9%). After adjusting for age, gender, waist circumference, and other variables, Oolong tea drinking (coefficient (β) ± standard error (SE) = 2.60 ± 0.67, P<0.001) was positively associated with PPS score, but not with PTAs, by multivariate linear regression analysis. In subgroup analysis for PPS score by gender, Oolong tea drinking showed a significant positive association with PPS score in males (β± SE=4.75 ± 0.95, P<0.001), but showed association of borderline significance with PPS score in females (β± SE=1.57 ± 0.94, P=0.097), with adjustment of other risk factors. In conclusion, Oolong tea drinking was associated with better central auditory function, but not with peripheral hearing thresholds, especially in male aged subjects.
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Affiliation(s)
- J H Hwang
- Department of Otolaryngology, Buddhist Dalin Tzu-Chi General Hospital, Chiayi, Taiwan
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Abstract
BACKGROUND AND STUDY AIMS Several reports have demonstrated the safety of pure natural-orifice transluminal endoscopic surgery (P-NOTES) using transanal endoscopic microsurgery (TEM) and embryonic NOTES (E-NOTES; laparoscopic surgery through the umbilicus). This study was performed to compare the safety and applicability of NOTES rectosigmoidectomy between E-NOTES and P-NOTES in a swine model. PATIENTS AND METHODS E-NOTES was conducted through a single port using laparoscopic instruments (n = 11). P-NOTES was performed using TEM with transgastric endoscopic assistance (n = 11). Gastrotomies were created using a needle knife and the balloon dilatation technique, and closed using T-anchors. Blood samples were collected to evaluate changes in systemic cytokine levels during the preoperative and postoperative periods; operative outcomes were also evaluated and compared between the groups. The necropsy findings were recorded after sacrifice at 1 week after the procedure. RESULTS The mean operative time for P-NOTES was significantly longer than that for E-NOTES (239 vs. 103 minutes, P < 0.001). The mean distance from the anal verge to colorectal anastomosis in the P-NOTES group was significantly less than that in the E-NOTES group (2.9 vs. 17.6 cm, P < 0.001). On necropsy, the complication rate of P-NOTES was higher than that of E-NOTES, but without statistical significance (54.5 % vs. 18.2 %, P = 0.091). The differences in changes in TNF-α, C-reactive protein, interleukin-6, and interleukin-1β between P-NOTES and E-NOTES were not significant. CONCLUSIONS E-NOTES rectosigmoidectomy in the swine model is safe, but remains challenging for use in pelvic dissection. P-NOTES rectosigmoidectomy using TEM may be a promising tool for pelvic dissection, but the transgastric approach involves a high degree of risk.
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Affiliation(s)
- D K Sohn
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
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Lord JD, Upton MP, Hwang JH. Confocal endomicroscopic evaluation of colorectal squamous metaplasia and dysplasia in ulcerative colitis. Gastrointest Endosc 2011; 73:1064-6. [PMID: 21067733 PMCID: PMC4360953 DOI: 10.1016/j.gie.2010.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Accepted: 09/01/2010] [Indexed: 02/08/2023]
Affiliation(s)
- James D. Lord
- Translational Research Program, Benaroya Research Institute, 1201 Ninth Ave., Mailstop IN-RC, Seattle, WA 98101-2795, U.S.A., Phone: 206-287-1088, Fax: 206-342-6580
| | - MP Upton
- Rodger C. Haggitt Gastrointestinal and Hepatic Pathology Service, UWMC. University of Washington 1959 NE Pacific Street, Seattle, WA, 98195, Phone: (206) 598-0006 Fax: (206) 598-4928
| | - JH Hwang
- Gastroenterology Section, Harborview Medical Center, 325 Ninth Avenue, Seattle, WA, 98104, Phone: (206) 744-7050, Fax: (206) 744-8698
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Park MH, Lee JW, Lee YI, Lee JH, Hwang JH, Kim HK, Yang CW. Patterning of catalysts for the selective growth of carbon nanotubes using laser irradiation of nickel nitrate. J Nanosci Nanotechnol 2011; 11:602-605. [PMID: 21446506 DOI: 10.1166/jnn.2011.3226] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We developed a simple method to produce patterned catalysts for the growth of carbon nanotubes (CNTs) on Si substrate using laser irradiation of Ni nitrate. We found that Ni nitrate can easily be decomposed into Ni oxide by KrF laser irradiation and that unexposed Ni nitrate can be removed using deionized (DI) water. Once we obtained patterned Ni oxide, we were able to synthesize multi-walled CNTs using a conventional thermal CVD. This new method does not require any photoresist or vacuum processes. Not only is the method compatible with low-temperature and large-area fabrication, it also significantly reduces the total processing steps required for conventional lithographic patterning technology. A detailed investigation of the decomposition process of this patterned catalyst and the microstructure of the patterned multi-walled CNTs was carried out using IR, SEM and TEM.
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Affiliation(s)
- M H Park
- School of Advanced Materials Science & Engineering and Center for Nanotubes & Nanostructured Composites, Sungkyunkwan University, Suwon 440-746, Korea
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Hwang JH, Song SH, Kim KA, Shin BK, Lee JK, Lee NW, Lee KW. Primary serous papillary carcinoma of the peritoneum mimicking pelvic actinomycosis: a case report and brief literature review. EUR J GYNAECOL ONCOL 2010; 31:214-216. [PMID: 20527245] [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: 05/29/2023]
Abstract
Primary serous papillary carcinoma of the peritoneum is a rare tumor, histologically similar to primary ovarian carcinoma. Pelvic CT and MRI are helpful to diagnose primary carcinoma of the peritoneum. We present a case of primary serous carcinoma of the peritoneum mimicking pelvic actinomycosis in a 59-year-old woman. Pelvic CT and MRI suggested pelvic actinomycosis. Exploratory laparotomy was performed to remove the mass and the diagnosis was confirmed by pathology. A subtotal hysterectomy, left salpingo-oophorectomy and omentectomy were performed. Histopathology examination revealed peritoneal carcinomatosis and primary serous carcinoma of the peritoneum. Pelvic CT and MRI were limited in their ability to differentiate inflammation, such as actinomycosis, from primary carcinoma of the peritoneum.
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Affiliation(s)
- J H Hwang
- Department of Obstetrics & Gynecology, College of Medicine, Korea University, Seoul, Korea
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Kim YH, Choi JY, Kim YW, Kim DI, Do YS, Hwang JH, Hyun SH, Lee KH, Kim BT. Characterization of congenital vascular malformation in the extremities using whole body blood pool scintigraphy and lymphscintigraphy. Lymphology 2009; 42:77-84. [PMID: 19725272] [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: 05/28/2023]
Abstract
The purpose of this study was to investigate the clinical usefulness of combined whole body blood pool scintigraphy (WBBPS) and lymphscintigraphy (LS) in the characterization of patients with congenital vascular malformations (CVMs) of the extremities. Subjects included 134 patients who underwent Tc-99m RBC WBBPS and Tc-99m filtered tin colloid (or antimony sulfur colloid) LS on initial diagnosis. Scintigraphic results were interpreted as arteriovenous malformations (AVMs), venolymphatic malformations (VLMs), lymphatic malformations (LMs), and venous malformations (VMs). Final diagnosis of the type of vascular malformation was determined by physical examination, magnetic resonance imaging (MRI), angiography, duplex ultrasonography, and/or biopsy results. The final diagnosis demonstrated that 14 of the study subjects had an AVM, 29 had a HLM, 20 had a LM, and 71 had a VM. The sensitivity of WBBPS and LS in the characterization of CVM was 85.7% (12/14) for AVMs, 96.6% (28/29) for VLMs, 95.0% (19/20) for LMs, and 88.7% (63/71) for VMs. The specificity was 100% for AVMs (120/120), 91.4% for VLMs (96/105), 99.1% for LMs (113/114), and 98.4% for VMs (62/63). The overall accuracy of WBBPS and LS was 91.0% (122/134). Our results show that combination of WBBPS with LS can characterize extremity CVMs in patients with high diagnostic accuracy, and may thus be useful for making optimal treatment decisions.
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Affiliation(s)
- Y H Kim
- Department of Nuclear Medicine, Division of Vascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Lee MW, Kim YJ, Park SW, Hwang JH, Jung SI, Jeon HJ, Kwon WK. Percutaneous radiofrequency ablation of small hepatocellular carcinoma invisible on both ultrasonography and unenhanced CT: a preliminary study of combined treatment with transarterial chemoembolisation. Br J Radiol 2009; 82:908-15. [PMID: 19433482 DOI: 10.1259/bjr/55877882] [Citation(s) in RCA: 25] [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] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The purpose of this study was to assess the feasibility and efficacy of percutaneous radiofrequency ablation combined with transarterial chemoembolisation (TACE) for the treatment of hepatocellular carcinoma that are invisible on both ultrasound and unenhanced CT. 73 patients with a total of 101 nodular hepatocellular carcinomas were referred for possible radiofrequency (RF) ablation. Of these, 14 lesions (14%) in 14 patients were invisible on both ultrasound and unenhanced CT. The invisible nodules averaged 1.2 cm in diameter (range, 0.8-2.0 cm; median, 1.1 cm). After segmental TACE, percutaneous RF ablation was performed if the index tumour was visible on fluoroscopy, ultrasound or CT. All cases of combined treatment were evaluated for size of ablative zone, complications, rate of technical effectiveness at 1-month follow-up CT and local tumour progression. After TACE, percutaneous RF ablation was technically feasible in 10 (71%) of the 14 nodules. RF ablation was performed with the guidance of fluoroscopy (n = 6, 42%), ultrasound (n = 2, 14%) or CT (n = 2, 14%). The mean diameter of the ablative zone by percutaneous RF ablation combined with TACE was 4.8+/-0.7 cm and 3.4+/-0.6 cm in the long and short axis, respectively. No major complications were documented. The primary technical effectiveness rate for nodules treated by combined treatment was 100% (10/10) at 1-month follow-up CT. No local tumour progression was found during the follow-up period (median 15 months; range 4-20 months). Percutaneous RF ablation combined with TACE is a feasible and effective technique for treating small hepatocellular carcinomas that are not visible on ultrasound or unenhanced CT.
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Affiliation(s)
- M W Lee
- Department of Radiology, Konkuk University School of Medicine, 4-12 Hwayang-dong, Gwangjin-gu, Seoul 143-729
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Hwang JH, Cicek N, Oleszkiewicz JA. Long-term operation of membrane biofilm reactors for nitrogen removal with autotrophic bacteria. Water Sci Technol 2009; 60:2405-2412. [PMID: 19901473 DOI: 10.2166/wst.2009.624] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Efficient gas delivery and biofilm development on membrane fibers in a membrane biofilm reactor (MBfR) would be well suited to autotrophic nitrification and denitrification using hydrogen. Total nitrogen removal in a two-step MBfR system incorporating sequential nitrification and hydrogen-driven autotrophic denitrification was investigated in order to achieve nitrogen removal by autotrophic bacteria alone. This study also aimed at the long-term stable operation, which proved difficult in previous studies due to excessive biofilm accumulation in autotrophic denitrification systems. Consecutive operation of nitrification and autotrophic denitrification lasted 230 days. Average specific nitrification rate of 1.87 g N/m(2) d was achieved and the performance was very stable throughout the experimental periods. Nitrification performance from this study showed comparable rates to previous studies although this work was conducted at slightly lower temperature. Batch tests confirmed the presence of nitrifiers from the effluent of the nitrification reactor, which reattached to the biofilm in the denitrification reactor leading to further nitrification. Performance of autotrophic denitrification was maintained stably throughout the experimental periods, however biofilm control by nitrogen sparging was required for process stability. Average specific denitrification rate of 1.41 g N/m(2) d and a maximum specific denitrification rate of 2.04 g N/m(2) d was maintained. This study showed that, with an appropriate biofilm control plan, stable long-term operation of a fully autotrophic MBfR system for total nitrogen removal was possible without major membrane cleaning procedures.
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Affiliation(s)
- J H Hwang
- Department of Civil Engineering, University of Manitoba, Winnipeg MB, R3T 5V6, Canada.
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Lee BB, Kim YW, Kim DI, Hwang JH, Laredo J, Neville R. Supplemental surgical treatment to end stage (stage IV-V) of chronic lymphedema. INT ANGIOL 2008; 27:389-395. [PMID: 18974701] [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: 05/27/2023]
Abstract
AIM When the lymphedema reaches to its end stages, the complex decongestive therapy (CDT) and/or compression therapy become less effective and increased risk of systemic/general sepsis to become potentially life threatening condition. METHODS To improve its clinical management, excisional surgery was performed on 22 patients for their 33 limbs in the end stage of lymphedema as a supplemental therapy, and its efficacy was retrospectively analyzed. Diagnosis was made by radionuclide lymphoscintigraphy and basic laboratory studies (e.g. ultrasonography, magnetic resonance imaging). Twenty-two patients (mean age: 46 years; 3 male and 19 female; 5 primary and 17 secondary) submitted to the excisional surgery on 33 limbs (unilateral: 11; bilateral: 22). Surgery was indicated by further progression of the disease with recurrent sepsis despite adequate antibiotics therapy. A modified Auchincloss-Homan's operation was used to excise grotesquely disfigured soft tissue with advanced dermato-lipo-fibrosclerotic change. The normal limb contour was re-established to allow proper postoperative therapy. Postoperative CDT and compression therapy were mandatorily implemented in all cases. RESULTS A postoperative assessment of the treatment results, at 12 months showed an overall improvement in 28 of the 33 limbs: substantial improvement on the condition of limb function and quality of life (QOL), and local and/or systemic sepsis. Eighteen patients with good compliance to maintain the postoperative CDT showed much improved clinical results and QOL through the first interim assessment (24 months). CONCLUSION Excisional surgery at the end stage of lymphedema seems to provide substantial improvement of clinical condition and QOL only when mandated postoperative CDT/compression therapy is well kept.
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Affiliation(s)
- B B Lee
- Department of Surgery, Georgetown University, Washington DC, USA.
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Hwang JH, Ho HC, Hsu CJ, Yang WS, Liu TC. Diagnostic value of combining bilateral electrocochleography results for unilateral Ménière's disease. Audiol Neurootol 2008; 13:365-9. [PMID: 18525200 DOI: 10.1159/000136155] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2007] [Accepted: 02/22/2008] [Indexed: 11/19/2022] Open
Abstract
We defined 'an interaural difference in the summating potential/action potential (SP/AP) ratio from the ipsilateral hearing-impaired side to the contralateral normal-hearing side of > or =0.15' as a positive result for a novel 'relative criterion' for the diagnosis of unilateral Ménière's disease. A uniform result could be derived only between a positive ECoG result and the side of disease in 78.7% subjects by conventional absolute criterion (SP/AP > or =0.42). By adding the relative criterion, we found that the diagnostic value increased greatly in specificity (91.2%) and increased slightly in positive predictive rate (79.2%), but decreased greatly in sensitivity (28.8%) and decreased slightly in negative predictive rate (52.5%). In addition, we verified which ear had the disease in all positive cases.
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Affiliation(s)
- J H Hwang
- School of Medicine, Tzu Chi University, Hualien, Taiwan, ROC
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Salhia B, Hwang JH, Smith CA, Nakada M, Rutka F, Symons M, Rutka JT. Role of myosin II activity and the regulation of myosin light chain phosphorylation in astrocytomas. ACTA ACUST UNITED AC 2008; 65:12-24. [PMID: 17896341 DOI: 10.1002/cm.20240] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [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: 12/12/2022]
Abstract
The generation of contractile force mediated by actin-myosin interactions is essential for cell motility. Myosin activity is promoted by phosphorylation of myosin light chain (MLC). MLC phosphorylation in large part is controlled by kinases that are effectors of Rho family GTPases. Accordingly, in this study we examined the effects of ROCK and Rac1 inhibition on MLC phosphorylation in astrocytoma cells. We found that low concentrations of the ROCK inhibitor Y27632 increased the phosphorylation state of the Triton X-100 soluble fraction of MLC, whereas higher concentrations of Y27632 decreased soluble phospho-MLC. These effects of Y27632 were dependent on Rac1. The soluble form of phospho-MLC comprises about 10% of total phospho-MLC in control cells. Interestingly, ROCK inhibition led to a decrease in the phosphorylation state of total MLC, whereas Rac1 inhibition had little effect. Thus, the soluble form of MLC is differentially regulated by ROCK and Rac1 compared with MLC examined in a total cell extract. We also observed that astrocytoma migration is stimulated by low concentrations of the myosin II inhibitor blebbistatin. However, higher concentrations of blebbistatin inhibit migration leading us to believe that migration has a biphasic dependence on myosin II activity. Taken together, our data show that modulation of myosin II activity is important in determining optimal astrocytoma migration. In addition, these findings suggest that there are at least two populations of MLC that are differentially regulated.
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Affiliation(s)
- Bodour Salhia
- The Arthur and Sonia Labatt Brain Tumor Research Center, The Hospital for Sick Children, The University of Toronto, Toronto, Ontario, Canada
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Kim YK, Jun IG, Kim SR, Hwang JH, Cho SK, Han SM, Hwang GS. Using 100% Oxygen does not Alter the Cardiovascular Autonomic Regulation during Non-invasively Simulated Haemorrhage in Healthy Volunteers. J Int Med Res 2008; 36:227-236. [DOI: 10.1177/147323000803600203] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
Abstract
We tested the effect of 100% oxygen on heart rate (HR), arterial blood pressure (ABP), cardiac output (CO), stroke volume (SV), total peripheral resistance (TPR), HR variability (HRV), systolic blood pressure variability (SBPV) and baroreflex sensitivity (BRS) in 20 healthy volunteers during simulated haemorrhage induced by −40 mmHg lower body negative pressure (LBNP). HRV in the high frequency region (HRVHF), BRS, ABP and TPR were significantly increased, SBPV in the low frequency region (SBPVLF), CO and SV were unchanged, and HR was significantly decreased by 100% oxygen administration during normovolaemia. HRVHF, BRS, CO and SV were significantly decreased, SBPVLF and ABP were unchanged, and HR and TPR were significantly increased by LBNP during 21% or 100% oxygen administration. There were no significant differences in cardiovascular autonomic and haemodynamic responses to LBNP during 21% or 100% oxygen administration, suggesting that 100% oxygen does not alter normal cardiovascular autonomic responses during simulated haemorrhage.
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Affiliation(s)
- YK Kim
- Department of Anaesthesiology and Pain Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - IG Jun
- Department of Anaesthesiology and Pain Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - SR Kim
- Department of Obstetrics and Gynaecology, College of Medicine, Kyung Hee University, Seoul, Korea
| | - JH Hwang
- Department of Anaesthesiology and Pain Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - SK Cho
- Department of Anaesthesiology and Pain Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - SM Han
- Department of Anaesthesiology and Pain Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - GS Hwang
- Department of Anaesthesiology and Pain Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
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Kim YK, Hwang GS, Hwang JH, Han SM. Re: A ropivacaine-lidocaine combination for caudal blockade in haemorrhoidectomy. J Int Med Res 2008; 36:203-204. [PMID: 18230280] [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: 05/25/2023] Open
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Hwang JH, Choi JY, Lee JY, Hyun SH, Choi Y, Choe YS, Lee KH, Kim BT. Lymphscintigraphy predicts response to complex physical therapy in patients with early stage extremity lymphedema. Lymphology 2007; 40:172-176. [PMID: 18365531] [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: 05/26/2023]
Abstract
We investigated whether baseline lymphscintigraphic findings can predict long-term response to complex physical therapy (CPT) in patients with early stage extremity lymphedema. Twenty patients with unilateral extremity lymphedema of clinical stage I or II underwent CPT after baseline lymphscintigraphy. Therapeutic responses (good vs. poor) were evaluated at 1 year post-CPT based on changes in skin status and subjective symptoms, and percent volume reductions and compared with clinical factors and lymphscintigraphic findings. Eleven patients showed good response to CPT with significant volume reduction of edematous extremities, and no significant volume reduction was observed in the remaining 9. Patients with good or poor responses to CPT showed no significant differences in terms of clinical variables. However, significant differences were observed between the lymphscintigraphic findings of these patients. More specifically, a lymphscintigraphic finding of main lymphatic vessels without collateral lymphatic vessels was the best predictor for a good response to CPT; the sensitivity, specificity and accuracy of this lymphscintigraphic finding is 91% (10/11), 100% (9/9) and 95% (19/20), respectively. In patients with unilateral extremity lymphedema of early stage, baseline lymphscintigraphy may usefully predict long-term response to CPT.
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Affiliation(s)
- J H Hwang
- Department of Physical Medicine and Rehabilitation, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Hwang JH, Chao JC, Ho HC, Hsiao SH. Effects of sex, age and hearing asymmetry on the interaural differences of auditory brainstem responses. Audiol Neurootol 2007; 13:29-33. [PMID: 17715467 DOI: 10.1159/000107468] [Citation(s) in RCA: 12] [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: 10/23/2006] [Accepted: 04/27/2007] [Indexed: 11/19/2022] Open
Abstract
Healthy patients with asymmetric sensorineural hearing loss who had received examination of auditory brainstem responses (ABR) were gathered for retrospective analysis. The effects of sex, age and hearing asymmetry on the interaural differences of ipsilateral ABR were determined by multivariant linear regression. Our results showed that the interaural differences of ABR wave III and wave V latencies were significantly affected by hearing asymmetry but not by sex or age. However, in female subjects younger than 50 years, differences of III-V intervals could be negatively correlated with hearing asymmetry. We suggest that plasticity in the auditory brainstem in younger females might account for asymmetrical peripheral hearing in this group.
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Affiliation(s)
- J H Hwang
- Graduate Institute of Clinical Medicine, National Taiwan University, Taipei, Taiwan.
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Chung KW, Kim SB, Park KD, Choi KG, Lee JH, Eun HW, Suh JS, Hwang JH, Kim WK, Seo BC, Kim SH, Son IH, Kim SM, Sunwoo IN, Choi BO. Early onset severe and late-onset mild Charcot-Marie-Tooth disease with mitofusin 2 (MFN2) mutations. Brain 2006; 129:2103-18. [PMID: 16835246 DOI: 10.1093/brain/awl174] [Citation(s) in RCA: 192] [Impact Index Per Article: 10.7] [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: 01/30/2023] Open
Abstract
Mutations in the mitofusin 2 (MFN2) gene, which encodes a mitochondrial GTPase mitofusin protein, have recently been reported to cause both Charcot-Marie-Tooth 2A (CMT2A) and hereditary motor and sensory neuropathy VI (HMSN VI). It is well known that HMSN VI is an axonal CMT neuropathy with optic atrophy. However, the differences between CMT2A and HMSN VI with MFN2 mutations remained to be clarified. Therefore, we studied the phenotypic characteristics of CMT patients with MFN2 mutations. Mutations in MFN2 were screened in 62 unrelated axonal CMT neuropathy families. We calculated CMT neuropathy scores (CMTNSs) and functional disability scales (FDSs) to quantify disease severity. Twenty-one patients with the MFN2 mutations were studied by brain MRI. Ten pathogenic mutations were identified in 26 patients from 15 families (24.2%). Six of these mutations had not been reported, and de novo mutations were observed in five families (33.3%). The electrophysiological patterns of affected individuals with the MFN2 mutations were typical of axonal CMT; however, the clinical and electrophysiological characteristics were markedly different in early (<10 years) and late disease-onset (> or =10 years) groups. All patients with an early onset had severe CMTNS (> or =21) and FDS (6 or 7), whereas most patients with late onset had mild CMTNS (< or =10) and FDS (< or =3). We identified two HMSN VI families with the R364W mutation in the early onset group; however, two other families with the same mutation did not have optic atrophy. In addition, two early onset families with R94W mutations, previously reported for HMSN VI, did not have visual impairment. Interestingly, eight patients had periventricular and subcortical hyperintense lesions by brain MRI. In the late-onset group, three patients had sensorineural hearing loss and two had bilateral extensor plantar responses. We found that MFN2 mutations are the major cause of axonal CMT neuropathy, and that they are associated with variable CNS involvements. Phenotypes were significantly different in the early and late disease-onset groups. Our findings suggest that HMSN VI might be a variant of the early onset severe CMT2A phenotype.
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Affiliation(s)
- K W Chung
- Department of Neurology and Ewha Medical Research Center, Ewha Woman's University, College of Medicine, Dongdaemun Hospital, 70 Jongno 6-ga, Jongno-gu, 110-783, Seoul, Korea E-mail:
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Lee WG, Hwang JH, Na BK, Cho JH, Lee HW, Cho SH, Kong Y, Song CY, Kim TS. Functional expression of a recombinant copper/zinc superoxide dismutase of filarial nematode, Brugia malayi. J Parasitol 2005; 91:205-8. [PMID: 15856906 DOI: 10.1645/ge-285r] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/10/2022] Open
Abstract
A gene encoding a copper/zinc superoxide dismutase (Cu/ Zn-SOD) of a filarial nematode, Brugia malayi, has been isolated and the biochemical properties of a functionally expressed recombinant enzyme were investigated. The cloned complementary DNA contained a single open reading frame of 477 bp encoding 158 amino acids (aa), which conserved metal-binding residues as well as residues specific for Cu/Zn-SODs. Comparison of the deduced aa sequence of the enzyme with that of other helminthes species, including filarial worms, exhibited high degree of similarities (49-98%). Recombinant enzyme of 32 kDa had an isoelectric point of 6.6 and was shown to consist of 2 subunits linked by interchain disulfide bonds. Enzyme activity of the recombinant protein was inhibited by potassium cyanide and hydrogen peroxide but not by sodium azide. It showed a wide range of pH optima, i.e., 7.0-11.0 and was highly resistant to heat inactivation.
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Affiliation(s)
- W G Lee
- Department of Tropical and Endemic Parasitic Diseases, National Institute of Health, Seoul 122-701, Korea
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Chang YW, Lee MH, Kwon KH, Kim JH, Park ST, Hwang JH, Goo DE, Choi DL, Lee DW. Magnetic resonance imaging of metaplastic carcinoma of the breast: sonographic and pathologic correlation. Acta Radiol 2004; 45:18-22. [PMID: 15164774 DOI: 10.1080/02841850410000773] [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] [Indexed: 10/26/2022]
Abstract
Metaplastic carcinoma of the breast is a rare disease. We describe the MRI findings with the correlative sonographic and pathologic features of two cases. On MRI, T2-weighted images demonstrate a relatively well-defined mass with high signal intensity cystic components. Dynamic enhancement subtraction images showed an early enhancing and delayed washout peripheral rim and non-enhancing internal components. A microlobulated, isoechogenic mass with cystic components was seen sonographically, and was histopathology related to necrosis and cystic degeneration. Although these features are not unique, metaplastic carcinoma should be included in the differential diagnosis for breast masses.
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Affiliation(s)
- Y W Chang
- Department of Radiology, Soonchunhyang University Hospital, Seoul, Korea.
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Abstract
PURPOSE Coded harmonic angio (CHA) US is a recently developed technique that can depict the effects of contrast agents. The purpose of this study was to determine the role of this technique in depicting the enhancement patterns of various renal perfusion abnormalities compared with dynamic CT. MATERIAL AND METHODS During a 6-month period, various renal lesions including renal cell carcinoma (n=12), transitional cell carcinoma (n=5), acute pyelonephritis (n=5), and renal trauma (n=2) were evaluated with CHA US using a microbubble contrast agent. US images were obtained before contrast administration and with a bolus injection of 4 g of microbubble contrast agent (300 mg/ml) every 10 s for 1 min and every minute for 5 min. The contrast enhancement patterns of various renal masses were compared with dynamic CT. RESULTS Of 12 renal cell carcinomas, 9 (75%) showed heterogeneous enhancement and the remaining 3 (25%) showed homogeneous enhancement. Enhancement of more than adjacent renal parenchyma was seen 16-252 s after injection. The duration of enhancement was 13-208 s (mean, 80 s). All transitional cell carcinomas showed peripheral enhancement. Enhancement was seen 22-270 s after injection. The duration of enhancement was 191-238 s (mean, 291 s). Five patients with acute pyelonephritis and 2 with renal trauma showed focal perfusion defects not shown on the pre-contrast examinations. CONCLUSION CHA US with microbubble contrast agent is an effective US technique for the evaluation of both tumor vascularity and renal perfusion abnormality.
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Affiliation(s)
- J H Kim
- Department of Radiology, Soonchunhyang University Hospital, Seoul, Korea.
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