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Kim I, Shin YR, Maeng LS, Kim JM, Kim JS, Kim BW. Detection of Clarithromycin resistance in Helicobacter pylori using MmaxSure™ H. pylori & ClaR Assay. Dig Dis 2024:000538655. [PMID: 38599188 DOI: 10.1159/000538655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 03/27/2024] [Indexed: 04/12/2024]
Abstract
Introduction Clarithromycin resistance is a crucial factor in the eradication of Helicobacter pylori. This study aimed to evaluate the performance of MmaxSure™ H. pylori & ClaR Assay (MmaxSure™) in the diagnosis and detection of clarithromycin resistance in H. pylori. Methods Subjects who underwent esophagogastroduodenoscopy between April 2020 and October 2022 were enrolled. The diagnostic performance of MmaxSure™ and dual priming oligonucleotide (DPO)-based multiplex polymerase chain reaction (PCR) were compared with rapid urease test and culture. Secondary gene sequencing analysis was performed in discordant cases of PCR tests. Results A total of 156 gastric biopsy samples were analyzed. In H. pylori detection, MmaxSure™ showed a 95.9% sensitivity (95%CI 90.6-98.6), a 42.7% specificity (95%CI 26.3-60.7), and a Kappa value of 0.457. For the detection of A2143G mutation samples, MmaxSure™ showed a 91.2% sensitivity (95%CI: 76.3-98.1), a 93.4% specificity (95%CI: 87.5-97.1), and a Kappa value of 0.804. There was a total of 10 discordant cases compared to gene sequencing in A2143G mutation detection for MmaxSure™. Conclusion In this study, MmaxSure™ showed comparable diagnostic performance to the DPO-PCR in the detection of the H. pylori and A2143G mutation. Further research is needed to confirm the clinical effectiveness of the MmaxSure™ assay in H. pylori eradication.
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Gupta DP, Bhusal A, Rahman MH, Kim JH, Choe Y, Jang J, Jung HJ, Kim UK, Park JS, Maeng LS, Suk K, Song GJ. EBP50 is a key molecule for the Schwann cell-axon interaction in peripheral nerves. Prog Neurobiol 2023; 231:102544. [PMID: 37940033 DOI: 10.1016/j.pneurobio.2023.102544] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 10/25/2023] [Accepted: 11/02/2023] [Indexed: 11/10/2023]
Abstract
Peripheral nerve injury disrupts the Schwann cell-axon interaction and the cellular communication between them. The peripheral nervous system has immense potential for regeneration extensively due to the innate plastic potential of Schwann cells (SCs) that allows SCs to interact with the injured axons and exert specific repair functions essential for peripheral nerve regeneration. In this study, we show that EBP50 is essential for the repair function of SCs and regeneration following nerve injury. The increased expression of EBP50 in the injured sciatic nerve of control mice suggested a significant role in regeneration. The ablation of EBP50 in mice resulted in delayed nerve repair, recovery of behavioral function, and remyelination following nerve injury. EBP50 deficiency led to deficits in SC functions, including proliferation, migration, cytoskeleton dynamics, and axon interactions. The adeno-associated virus (AAV)-mediated local expression of EBP50 improved SCs migration, functional recovery, and remyelination. ErbB2-related proteins were not differentially expressed in EBP50-deficient sciatic nerves following injury. EBP50 binds and stabilizes ErbB2 and activates the repair functions to promote regeneration. Thus, we identified EBP50 as a potent SC protein that can enhance the regeneration and functional recovery driven by NRG1-ErbB2 signaling, as well as a novel regeneration modulator capable of potential therapeutic effects.
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Affiliation(s)
- Deepak Prasad Gupta
- Translational Brain Research Center, International St. Mary's Hospital, Catholic Kwandong University, Incheon, Republic of Korea; Department of Pharmacology, Brain Science and Engineering Institute, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Anup Bhusal
- Department of Pharmacology, Brain Science and Engineering Institute, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Md Habibur Rahman
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Jae-Hong Kim
- Department of Pharmacology, Brain Science and Engineering Institute, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Youngshik Choe
- Korea Brain Research Institute, Daegu, Republic of Korea
| | - Jaemyung Jang
- Korea Brain Research Institute, Daegu, Republic of Korea
| | - Hyun Jin Jung
- Korea Brain Research Institute, Daegu, Republic of Korea
| | - Un-Kyung Kim
- Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Jin-Sung Park
- Department of Neurology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea
| | - Lee-So Maeng
- Department of Hospital Pathology, Incheon St. Mary's Hospital College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Kyoungho Suk
- Department of Pharmacology, Brain Science and Engineering Institute, BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Gyun Jee Song
- Translational Brain Research Center, International St. Mary's Hospital, Catholic Kwandong University, Incheon, Republic of Korea; Department of Medicine, College of Medicine, Catholic Kwandong University, Gangneung, Gangwon-do, Republic of Korea.
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Kim I, Maeng LS, Kim JS, Kim BW, Cheung DY, Kim JI, Park SH. Correction: Quantitative multiplex real-time polymerase chain reaction assay for the detection of Helicobacter pylori and clarithromycin resistance. BMC Microbiol 2023; 23:188. [PMID: 37454063 DOI: 10.1186/s12866-023-02937-3] [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: 07/18/2023] Open
Affiliation(s)
- Ilsoo Kim
- Division of Gastroenterology, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Lee-So Maeng
- Department of Hospital Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Joon Sung Kim
- Division of Gastroenterology, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
| | - Byung-Wook Kim
- Division of Gastroenterology, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Dae Young Cheung
- Division of Gastroenterology, Department of Internal Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jin Il Kim
- Division of Gastroenterology, Department of Internal Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Soo-Heon Park
- Division of Gastroenterology, Department of Internal Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Kim I, Maeng LS, Kim JS, Kim BW, Cheung DY, Kim JI, Park SH. Quantitative multiplex real-time polymerase chain reaction assay for the detection of Helicobacter pylori and clarithromycin resistance. BMC Microbiol 2023; 23:155. [PMID: 37237357 DOI: 10.1186/s12866-023-02868-z] [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] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 04/21/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND Identifying clarithromycin resistance is essential for eradicating Helicobacter pylori (HP). Therefore, we evaluated the performance of Allplex™ H.pylori & ClariR Assay (Allplex™) for diagnosing and detecting clarithromycin resistance in HP. METHODS Subjects who underwent esophagogastroduodenoscopy between April 2020 and August 2021 at Incheon St. Mary's hospital were enrolled in this study. The diagnostic performances of Allplex™ and dual priming oligonucleotide (DPO)-based multiplex polymerase chain reaction (PCR) were compared with sequencing as the gold standard. RESULTS A total of 142 gastric biopsy samples were analyzed. Gene sequencing revealed 124 HP infections, 42 A2143G mutations, 2 A2142G mutations, one dual mutation, and no A2142C mutation. DPO-PCR showed 96.0% sensitivity and 100.0% specificity for HP detection; the corresponding rates for Allplex™ were 99.2% and 100.0%. DPO-PCR showed 88.3% sensitivity and 82.0% specificity for A2143G mutation, and Allplex™ showed 97.6% and 96.0%. The Cohen's Kappa coefficient for overall test results was 0.56 for DPO-PCR and 0.95 for Allplex™. CONCLUSION Allplex™ showed comparable diagnostic performance with direct gene sequencing and non-inferior diagnostic performance to DPO-PCR. Further research is required to confirm whether Allplex™ is an effective diagnostic tool for the eradication of HP.
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Affiliation(s)
- Ilsoo Kim
- Divison of Gastroenterology, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Lee-So Maeng
- Department of Hospital Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Joon Sung Kim
- Divison of Gastroenterology, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea.
| | - Byung-Wook Kim
- Divison of Gastroenterology, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Dae Young Cheung
- Division of Gastroenterology, Department of Internal Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jin Il Kim
- Division of Gastroenterology, Department of Internal Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Soo-Heon Park
- Division of Gastroenterology, Department of Internal Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Jun SY, Kim J, Yoon N, Maeng LS, Byun JH. Prognostic Potential of Cyclin D1 Expression in Colorectal Cancer. J Clin Med 2023; 12:jcm12020572. [PMID: 36675501 PMCID: PMC9867305 DOI: 10.3390/jcm12020572] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/23/2022] [Accepted: 01/10/2023] [Indexed: 01/12/2023] Open
Abstract
Cyclin D1 is mainly known as an oncogenic driver in cancers, and the dysregulated cyclin D1/cyclin-dependent kinase (CDK) 4/6 axis is considered an attractive target for cancer therapy. Recent studies have reported that tumors respond to therapeutic interventions targeting altered cyclin D1 expression via application of the CDK4/6 inhibitor. However, the prognostic and therapeutic contributions of cyclin D1 to colorectal cancer (CRC) remain controversial. Herein, we assessed the associations between cyclin D1 expression and clinicopathological factors, including patients' overall survival (OS) and recurrence-free survival (RFS), in 495 surgically resected primary CRCs. We also examined previous studies for cyclin D1 in CRCs. High expressions of cyclin D1 (cyclin D1High) was observed in 389 CRC cases (78.6%). Cyclin D1High consistently predicted better patient OS and RFS in CRCs. Based on multivariate analysis, cyclin D1High and young age of patients remained as independent prognosticators of higher OS rate, whereas cyclin D1High, females, chemotherapy, absence of nodal metastasis, and lower T-category remained as independent prognosticators of better RFS. Cyclin D1 is commonly overexpressed in CRCs, and its expression can be used as a favorable prognostic indicator in patients with CRCs; this may be important for predicting responses to subsequent CDK4/6 inhibitors.
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Affiliation(s)
- Sun-Young Jun
- Department of Pathology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Incheon 21431, Republic of Korea
- Correspondence: ; Tel.: +82-32-280-7368
| | - Jiyoung Kim
- Department of Pathology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Incheon 21431, Republic of Korea
| | - Nara Yoon
- Department of Pathology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Incheon 21431, Republic of Korea
| | - Lee-So Maeng
- Department of Pathology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Incheon 21431, Republic of Korea
| | - Jae Ho Byun
- Division of Oncology, Department of Internal Medicine, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Incheon 21431, Republic of Korea
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Yoon N, Kim HS, Lee JW, Lee EJ, Maeng LS, Yoon WS. Targeted Genomic Sequencing Reveals Different Evolutionary Patterns Between Locally and Distally Recurrent Glioblastomas. Cancer Genomics Proteomics 2021; 17:803-812. [PMID: 33099481 DOI: 10.21873/cgp.20234] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 09/06/2020] [Revised: 09/23/2020] [Accepted: 10/01/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND/AIM Glioblastoma is the most malignant form of astrocytoma. The purpose of this study was to analyze the genetic characteristics of primary and recurrent glioblastomas using targeted sequencing and investigate the differences in mutational profiles between the locations of tumor recurrence. MATERIALS AND METHODS Fourteen glioblastoma patients who developed local (n=10) or distal (n=4) recurrence were included in the study. Targeted sequencing analysis was performed using the primary (n=14) and corresponding recurrent (n=14) tumor tissue samples. RESULTS The local and distal recurrence groups showed different genetic evolutionary patterns. Most of the locally recurrent glioblastomas demonstrated concordant mutational profiles between the primary and recurrent tumors, suggesting a linear evolution. In contrast, all cases of distally recurrent glioblastomas showed changes in mutational profiles with newly acquired mutations when compared to the corresponding primary tumors, suggesting a branching evolution. CONCLUSION Locally and distally recurrent glioblastomas exhibit different evolutionary patterns.
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Affiliation(s)
- Nara Yoon
- Department of Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Hyun-Soo Kim
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jung Whee Lee
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Eui-Jin Lee
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Lee-So Maeng
- Department of Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Wan Soo Yoon
- Department of Neurosurgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
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Kim J, Jun SY, Maeng LS. The clinical performance of human papillomavirus genotyping using PANArray HPV chip: Comparison to ThinPrep cytology alone and co-testing. Pathol Res Pract 2020; 216:153121. [PMID: 32825927 DOI: 10.1016/j.prp.2020.153121] [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] [Received: 05/26/2020] [Revised: 07/02/2020] [Accepted: 07/08/2020] [Indexed: 10/23/2022]
Abstract
Recently, a high-risk human papillomavirus (HR-HPV) detecting assay alone could be used as a first-line screening tool for cervical cancer, although the test system has been limited to the Cobas 4800 HPV test. However, the screening efficiency of the HPV chip, which is widely used in Eastern Asia because of the high prevalence of non16/18 HR-HPV genotypes, has not been well elucidated. After selecting 300 women who were co-tested using the PANArray HPV chip and the ThinPrep assay and had confirmed histological diagnoses, we evaluated the diagnostic accuracy of the PANArray HPV test based on direct sequencing and clinical performance compared to the ThinPrep alone and co-testing. HR-HPVs were identified in 212 (70.7 %) patients by the PANArray HPV test. The results of the PANArray HPV test and direct sequencing for detecting HR-HPVs were in almost perfect agreement, consistent in 95.3 % of the cases (k = 0.89). HR-HPVs were more commonly detected by the PANArray HPV assay in patients with high-grade squamous intraepithelial lesions (HSILs) or worse (p < 0.001, both) by cytological and histological examinations. The PANArray HPV test had higher sensitivity (91.7 %) than the ThinPrep (52.6 %) but co-testing increased the sensitivity for predicting HSIL or worse cervical lesions to 99.2 %. In conclusion, the PANArray HPV test accurately detected HR-HPVs determined by cytological and histological examinations to be HSIL or worse cervical lesions. The PANArray HPV assay alone was more sensitive than the ThinPrep alone for detecting HSIL or worse cervical lesions, however, co-testing enhanced the sensitivity. Co-testing is more useful for screening HSIL or worse lesions than use of either the ThinPrep or PANArray HPV genotyping alone.
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Affiliation(s)
- Jiyoung Kim
- Department of Pathology, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sun-Young Jun
- Department of Pathology, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea.
| | - Lee-So Maeng
- Department of Pathology, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
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Park SI, Jung HY, Lee EJ, Maeng LS. THERAPEUTIC EFFECTS OF TRAIL-SECRETING MESENCHYMAL STEM CELLS WITH FOCUSED ULTRASOUND-INDUCED TEMPORARILY OPENING OF BLOOD-BRAIN BARRIERS IN THE BRAIN TUMOR. The Journal of Immunology 2020. [DOI: 10.4049/jimmunol.204.supp.239.39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Mesenchymal stem cell (MSC)-based gene therapy is a promising tool for the treatment of various neurological disease including brain tumor. The tumor necrosis factor-related apoptotic ligand (TRAIL) is believed to have promise as a cancer the therapy. For stem cell therapy in the brain tumor, therapy efficiency of stem cells by non-invasive method is extremely limited due to blood brain barrier (BBB). Noninvasive pulsed focused ultrasound (FUS) can temporarily opening the BBB of specific areas in the brain. Herein, we investigated the tumor-targeted BBB temporarily opening by FUS and therapeutic efficiency of NIR fluorescence-labeled MSCs-TRAIL by intravenous injection in brain tumor. In addition, we observed the inflammatory changes of microglia cells by FUS using PET-CT and histological analysis. As a results, In vivo survival experiments showed that FUS treated-MSC-TRAIL group has greater therapeutic efficacy than FUS untreated-groups. The number of MSCs accumulated specifically site in the tumor region. MSC migration toward FUS treated-tumor site greater compared to the FUS untreated-tumors. Furthermore, the changes of microglia activity by FUS was no difference between the other groups. Collectively, these results suggest that therapeutic efficacy of MSC-TRAIL increases by temporarily opening the BBB using the FUS, which may be a more useful strategy for cancer therapy.
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Affiliation(s)
- Sang In Park
- 1Insitute for Bio-Medical Convergence, Incheon St. Mary’s Hospital, The Catholic University of Korea, South Korea
| | - Ho Yong Jung
- 1Insitute for Bio-Medical Convergence, Incheon St. Mary’s Hospital, The Catholic University of Korea, South Korea
| | - Eui-Jin Lee
- 1Insitute for Bio-Medical Convergence, Incheon St. Mary’s Hospital, The Catholic University of Korea, South Korea
- 2Incheon Mary’s Hospital, South Korea
| | - Lee-So Maeng
- 3Clinical Pathology, Incheon St. Mary’s Hospital, The Catholic University of Korea, South Korea
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Lee J, Kim BW, Huh CW, Kim JS, Maeng LS. Endoscopic Factors that Can Predict Histological Ulcerations in Early Gastric Cancers. Clin Endosc 2020; 53:328-333. [PMID: 31906605 PMCID: PMC7280847 DOI: 10.5946/ce.2019.133] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 08/04/2019] [Indexed: 12/11/2022] Open
Abstract
Background/Aims Predicting histological ulceration in early gastric cancer (EGC) during endoscopic examination is crucial for endoscopists deciding on the treatment modality. The aim of this study was to investigate the endoscopic factors that can predict histological ulcerations in EGCs.
Methods We retrospectively analyzed patients who underwent endoscopic submucosal dissection (ESD) for EGC. Clinical features and endoscopic characteristics of EGC such as location, histological differentiation, longest diameter, tumor morphology, mucosal break, converging fold, color change, and surface irregularity were reviewed. Histological ulceration was defined based on ESD specimens.
Results A total of 633 EGC lesions from 613 patients were included and histological ulcerations were found in 90 lesions (14.2%). Presence of converging folds, tumor morphology, and color changes on endoscopic examination were related to histological ulceration in the univariate analysis and converging folds along with color changes were statistically significant factors in the multivariate analysis. Kaplan–Meier analysis showed that patients with histological ulcerations in EGCs tended to have higher marginal recurrence rates.
Conclusions Mucosal breaks are not equivalent to histological ulcerations. Rather, the existence of converging folds and color changes during endoscopic examination suggest histological ulcerations. Endoscopists should consider these factors when they decide the treatment modality for EGCs.
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Affiliation(s)
- Jaesin Lee
- Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Byung-Wook Kim
- Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Cheal Wung Huh
- Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Joon Sung Kim
- Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Lee-So Maeng
- Department of Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
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Jeon J, Maeng LS, Bae YJ, Lee EJ, Yoon YC, Yoon N. Comparing Clonality Between Components of Combined Hepatocellular Carcinoma and Cholangiocarcinoma by Targeted Sequencing. Cancer Genomics Proteomics 2018; 15:291-298. [PMID: 29976634 DOI: 10.21873/cgp.20087] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 05/15/2018] [Revised: 06/13/2018] [Accepted: 06/15/2018] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND/AIM Combined hepatocellular-cholangiocarcinoma (cHCC-CC) is a very rare type of tumor, comprising these two different components in a single mass. Although several studies have determined the genetic characteristics of cHCC-CC, next-generation sequencing (NGS) data for comparing clonality of cHCC-CC are currently unavailable. MATERIALS AND METHODS Four cHCC-CC cases were selected and HCC, CC and normal components from each case were separately micro-dissected. DNA and RNA were isolated from each sample and sequenced by Oncomine Comprehensive Panel interrogating 143 cancer genes using the Ion S5 XL sequence platform. Genetic features of HCC and CC from each patient were compared. RESULTS All cases successfully produced NGS data. Two cases demonstrated different mutations in their HCC and CC components (biclone), while two cases shared the same mutations in the two components (monoclone). Single nucleotide polymorphisms (SNPs) of TP53 (4/4) and phosphatase and tensin homolog (PTEN) (1/4), and gene amplifications of mesenchymal-epithelial transition factor (MET) (1/4), c-MYC (1/4), and cyclin-dependent kinase 6 (CDK6) (1/4) were found in the CC component. In the HCC component, SNPs of TP53 (3/4), PTEN (1/4) and catenin beta 1 (CTNNB1) (1/4) and cyclin D1 (CCND1) amplification (1/4) were detected. Two biclonal cases showed a histologically distinct border between HCC and CC components with or without intermediate cell foci. Two monoclonal cases showed a histologically ambiguous border between HCC and CC components with more intermingled pattern than biclonal cases. CONCLUSION Based on our study, cHCC-CC can be genetically divided into biclonal and monoclonal forms. Therefore, separate sequencing of each component of cHCC-CC is recommended for exact molecular classification and targeted therapy.
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Affiliation(s)
- Jinyoung Jeon
- Department of Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Lee-So Maeng
- Department of Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Yoon Jin Bae
- Department of Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Eui-Jin Lee
- Institute of Catholic Integrative Medicine (ICIM), Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Young Chul Yoon
- Department of Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Nara Yoon
- Department of Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
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Yoon N, Kim J, Maeng LS, Ahn JH, Park ES. Prominent Nucleoli and Non-glandular Feature Are Independent Predictors of PD-L1 Expression in Lung Adenocarcinoma. Anticancer Res 2018; 38:6003-6008. [PMID: 30275232 DOI: 10.21873/anticanres.12949] [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] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 08/22/2018] [Accepted: 08/24/2018] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM In patients with non-small cell lung cancer, relationships between PD-L1 (programmed death-ligand 1) expression and clinicopathological characteristics have been examined. However, the association between cytological features and PD-L1 expression remains unknown. Thus, the aim of this study was to investigate whether nuclear features might be correlated with PD-L1 expression in patients with advanced and inoperable lung adenocarcinoma using small biopsy specimens. MATERIALS AND METHODS Archived slides from 90 patients with lung adenocarcinoma who underwent small biopsy between October 2014 and May 2017 at the Incheon St. Mary's Hospital, were reviewed. PD-L1 expression was detected by immunohistochemistry using PD-L1 22C3 IHC assay. Associations of PD-L1 expression with pathological and molecular features (EGFR mutation, ALK and ROS-1 rearrangement) were statistically analyzed. RESULTS PD-L1 expression in tumor cells was positive in 33 of 90 cases (36.7%). Higher PD-L1 expression (≥50%) was more frequent in cases with marked nuclear pleomorphism (p<0.001), coarse chromatin pattern (p=0.006), predominant nucleoli (≥3 μm) (p<0.001), large nuclear diameter (>5× small lymphocyte) (p=0.006), non-glandular feature (p<0.001), and atypical mitosis (p=0.034). There were no significant correlations between PD-L1 positivity and molecular features. In multivariable logistic regression analysis, PD-L1 positivity was independently associated with prominent nucleoli (p=0.005) and non-glandular feature (p=0.007). CONCLUSION Prominent nucleoli and non-glandular feature are independent predictors of PD-L1 expression in lung adenocarcinoma.
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Affiliation(s)
- Nara Yoon
- Department of Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Jiyoung Kim
- Department of Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Lee-So Maeng
- Department of Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Joong Hyun Ahn
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Eun Su Park
- Department of Pathology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
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12
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Kim R, Park SI, Lee CY, Lee J, Kim P, Oh S, Lee H, Lee MY, Kim J, Chung YA, Hwang KC, Maeng LS, Chang W. Alternative new mesenchymal stem cell source exerts tumor tropism through ALCAM and N-cadherin via regulation of microRNA-192 and -218. Mol Cell Biochem 2016; 427:177-185. [PMID: 28039611 PMCID: PMC5306073 DOI: 10.1007/s11010-016-2909-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 09/24/2016] [Accepted: 12/03/2016] [Indexed: 12/26/2022]
Abstract
Gliomas are the most common type of malignant primary brain tumors. Some treatments of gliomas exist, but they are rarely curative. Mesenchymal stem cells (MSCs) are emerging as potential modes of targeted cancer therapy owing to their capacity for homing toward tumor sites. It has been proposed that MSCs derived from various sources, such as bone marrow, adipose tissue and umbilical cord blood, can be used as cell-based therapy for brain tumors. Here, MSCs obtained from the synovial fluid of osteoarthritis or rheumatoid arthritis patients were investigated as therapeutic candidates. Specifically, we compared migratory and adhesive abilities, as well as expression levels of related genes and microRNA in bone marrow derived-MSCs (BMMSCs), adipose derived-MSCs (ADMSCs), and synovial fluid derived-MSCs (SFMSCs) after treatment with conditioned medium from gliomas. Migration and adhesion of SFMSCs increased through upregulation of the activated lymphocyte cell adhesion molecule (ALCAM) and N-cadherin by microRNA-192 and -218 downregulation, similar to BMMSCs and ADMSCs. Migratory capacities of all types of MSCs were evaluated in vivo, and SFMSCs migrated intensively toward gliomas. These results suggest that SFMSCs have potential for use in cell-based antitumor therapies.
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Affiliation(s)
- Ran Kim
- Department of Biology Education, College of Education, Pusan National University, Pusan, 609-735, South Korea
| | - Sang In Park
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Incheon, 403-720, South Korea
| | - Chang Youn Lee
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, 120-752, South Korea
| | - Jihyun Lee
- Department of Biology Education, College of Education, Pusan National University, Pusan, 609-735, South Korea
| | - Pilseog Kim
- Department of Biology Education, College of Education, Pusan National University, Pusan, 609-735, South Korea
| | - Sekyung Oh
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Hojin Lee
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Min Young Lee
- Department of Molecular Physiology, College of Pharmacy, Kyungpook National University, Daegu, 702-701, South Korea
| | - Jongmin Kim
- Department of Life Systems, Sookmyung Women's University, 52 Hyochangwon-gil, Seoul, 140-742, South Korea
| | - Yong-An Chung
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Incheon, 403-720, South Korea
| | - Ki-Chul Hwang
- Institute for Bio-Medical Convergence, College of Medicine, Catholic Kwandong University, Gangwon-do, 210-701, South Korea.,Catholic Kwandong University International, St. Mary's Hospital, Incheon, 404-834, South Korea
| | - Lee-So Maeng
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Incheon, 403-720, South Korea.
| | - Woochul Chang
- Department of Biology Education, College of Education, Pusan National University, Pusan, 609-735, South Korea.
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13
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Park SI, Lee JH, Ham HJ, Jung YJ, Park MS, Lee J, Maeng LS, Chung YA, Jang KS. Evaluation of 2-[18F]-fluoro-2-deoxy-D-glucose positron emission tomography/computed tomography in rat models with hepatocellular carcinoma with liver cirrhosis. Biomed Mater Eng 2016; 26 Suppl 1:S1669-76. [PMID: 26405933 DOI: 10.3233/bme-151466] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Liver cirrhosis is a predominant risk factor for hepatocellular carcinoma (HCC). However, the exact mechanism of the progression from cirrhosis to cancer remains unclear. The uptake of 2-[(18)F]-fluoro-2-deoxy-D-glucose ((18)F-FDG) is widely used as a marker of increased glucose metabolism to monitor the progression of cancer with positron emission tomography (PET)/computed tomography (CT). Here we investigated the feasibility of using (18)F-FDG PET/CT in the diethylnitrosamine (DEN) mediated experimental hepatocellular carcinoma model. Rats received weekly intraperitoneal injections of DEN for 16 weeks for induction of HCC. We recorded starting from 0 days or 0 weeks after the last DEN injection. The weight and survival rate of rats were then measured. Also, an (18)F-FDG PET scan and serum analysis were performed at minus 2, 0, plus 2, and plus 4 weeks after the last DEN injection. The body weight of rats was maintained between 350 g and 370 g during 14 and 20 weeks, and the rats were euthanized at 35 days after the last DEN injection. The serum levels of alanine transaminase (ALT), aspartate transaminase (AST), and alkaline phosphate (ALP) were significantly higher at zero weeks after the last DEN injection. The (18)F-FDG uptake for the quantitative evaluation of HCC was done by measuring the region of interest (ROI). At minus two weeks after the last DEN injection, the ROI of rats had significantly increased compared to the normal group, in a time-dependent manner. These results suggest that FDG uptake serves as a good screening test to evaluate the feasibility of DEN-induced HCC.
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Affiliation(s)
- S I Park
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon 403-720, The Republic of Korea
| | - J H Lee
- Laboratory of Molecular Pathology, Department of Pharmacy, College of Pharmacy, Seoul National University, Seoul 151-742, The Republic of Korea
| | - H J Ham
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon 403-720, The Republic of Korea
| | - Y J Jung
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon 403-720, The Republic of Korea
| | - M S Park
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon 403-720, The Republic of Korea
| | - J Lee
- Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA
| | - L S Maeng
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon 403-720, The Republic of Korea
| | - Y A Chung
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon 403-720, The Republic of Korea.,Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon 403-720, The Republic of Korea
| | - K S Jang
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon 403-720, The Republic of Korea.,Department of Neurosurgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon 403-720, The Republic of Korea
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14
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Kim J, Jeon J, Kim DH, Park ES, Maeng LS, Jun SY. Glomangiopericytoma and glomus tumor of the sinonasal tract: A report of two cases with emphasis on the differential diagnosis. Pathol Int 2016; 66:348-50. [PMID: 26972077 DOI: 10.1111/pin.12399] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 01/19/2016] [Accepted: 02/09/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Jiyoung Kim
- Department of Pathology, The Catholic University of Korea, Incheon, Republic of Korea
| | - Jinyoung Jeon
- Department of Pathology, The Catholic University of Korea, Incheon, Republic of Korea
| | - Dong-Hyun Kim
- Departments of Ororhinolaryngology-Head and Neck Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Republic of Korea
| | - Eun Su Park
- Department of Pathology, The Catholic University of Korea, Incheon, Republic of Korea
| | - Lee-So Maeng
- Department of Pathology, The Catholic University of Korea, Incheon, Republic of Korea
| | - Sun-Young Jun
- Department of Pathology, The Catholic University of Korea, Incheon, Republic of Korea
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15
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Lee W, Lee SD, Park MY, Foley L, Purcell-Estabrook E, Kim H, Fischer K, Maeng LS, Yoo SS. Image-Guided Focused Ultrasound-Mediated Regional Brain Stimulation in Sheep. Ultrasound Med Biol 2016; 42:459-470. [PMID: 26525652 DOI: 10.1016/j.ultrasmedbio.2015.10.001] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 09/17/2015] [Accepted: 10/01/2015] [Indexed: 06/05/2023]
Abstract
Non-invasive brain stimulation using focused ultrasound has largely been carried out in small animals. In the present study, we applied stimulatory focused ultrasound transcranially to the primary sensorimotor (SM1) and visual (V1) brain areas in sheep (Dorset, all female, n = 8), under the guidance of magnetic resonance imaging, and examined the electrophysiologic responses. By use of a 250-kHz focused ultrasound transducer, the area was sonicated in pulsed mode (tone-burst duration of 1 ms, duty cycle of 50%) for 300 ms. The acoustic intensity at the focal target was varied up to a spatial peak pulse-average intensity (Isppa) of 14.3 W/cm(2). Sonication of SM1 elicited electromyographic responses from the contralateral hind leg, whereas stimulation of V1 generated electroencephalographic potentials. These responses were detected only above a certain acoustic intensity, and the threshold intensity, as well as the degree of responses, varied among sheep. Post-sonication animal behavior was normal, but minor microhemorrhages were observed from the V1 areas exposed to highly repetitive sonication (every second for ≥500 times for electroencephalographic measurements, Isppa = 6.6-10.5 W/cm(2), mechanical index = 0.9-1.2). Our results suggest the potential translational utility of focused ultrasound as a new brain stimulation modality, yet also call for caution in the use of an excessive number of sonications.
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Affiliation(s)
- Wonhye Lee
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Stephanie D Lee
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Michael Y Park
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Lori Foley
- Invasive Cardiovascular Experimental Laboratory, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Erin Purcell-Estabrook
- Invasive Cardiovascular Experimental Laboratory, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Hyungmin Kim
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA; Center for Bionics, Korea Institute of Science and Technology, Seoul, Korea
| | - Krisztina Fischer
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Lee-So Maeng
- Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea
| | - Seung-Schik Yoo
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
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16
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Jun SY, Park ES, Kim J, Kang J, Lee JJ, Bae Y, Kim SI, Maeng LS. Comparison of the Cobas 4800 HPV and HPV 9G DNA Chip Tests for Detection of High-Risk Human Papillomavirus in Cervical Specimens of Women with Consecutive Positive HPV Tests But Negative Pap Smears. PLoS One 2015; 10:e0140336. [PMID: 26469982 PMCID: PMC4607436 DOI: 10.1371/journal.pone.0140336] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 09/24/2015] [Indexed: 12/26/2022] Open
Abstract
Detecting high-risk (HR) HPV is important for clinical management of women with persistent HPV-positive and Pap-negative results. The Cobas 4800 HPV test is the first FDA-approved HPV DNA test that can be used alone as a first-line screening tool. The HPV 9G DNA chip test is a PCR-based DNA microarray assay. We evaluated the patients of consecutive HPV-positivity on HPV 9G DNA chip test without cytologic abnormalities. We then compared the performances of HPV 9G DNA chip and the Cobas 4800 HPV tests for detecting HR HPV with each other and confirmed HPV genotyping using direct sequencing. All 214 liquid-based cytology specimens were collected from 100 women with consecutive HPV-positive and Pap-negative results on the HPV 9G DNA chip test between May 2012 and Dec 2013, but only 180 specimens were available for comparing HPV test results. The HPV 9G DNA chip and the Cobas 4800 HPV tests agreed with each other in 81.7% of the samples, and the concordance rate was greater than 97.2% for detecting HPV-16 or -18. For HR genotypes other than HPV types 16 and 18, the two tests agreed for 81.1% of the samples. The sensitivity of both assays for detecting HR HPV was 100%, regardless of HR genotypes. The HPV 9G DNA chip test may be as effective as the Cobas 4800 HPV test in detecting HR HPV, and has a similar ability to identify HPV-16 and -18.
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Affiliation(s)
- Sun-Young Jun
- Department of Pathology, Incheon St. Mary’s Hospital, Incheon, The Catholic University of Korea, Incheon, Republic of Korea
| | - Eun Su Park
- Department of Pathology, Incheon St. Mary’s Hospital, Incheon, The Catholic University of Korea, Incheon, Republic of Korea
| | - Jiyoung Kim
- Department of Pathology, Incheon St. Mary’s Hospital, Incheon, The Catholic University of Korea, Incheon, Republic of Korea
| | - Jun Kang
- Department of Pathology, Incheon St. Mary’s Hospital, Incheon, The Catholic University of Korea, Incheon, Republic of Korea
| | - Jae Jun Lee
- Department of Pathology, Incheon St. Mary’s Hospital, Incheon, The Catholic University of Korea, Incheon, Republic of Korea
| | - Yoonjin Bae
- Department of Pathology, Incheon St. Mary’s Hospital, Incheon, The Catholic University of Korea, Incheon, Republic of Korea
| | - Sang-Il Kim
- Department of Pathology, Incheon St. Mary’s Hospital, Incheon, The Catholic University of Korea, Incheon, Republic of Korea
| | - Lee-So Maeng
- Department of Pathology, Incheon St. Mary’s Hospital, Incheon, The Catholic University of Korea, Incheon, Republic of Korea
- * E-mail:
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17
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Ham O, Lee CY, Kim R, Lee J, Oh S, Lee MY, Kim J, Hwang KC, Maeng LS, Chang W. Therapeutic Potential of Differentiated Mesenchymal Stem Cells for Treatment of Osteoarthritis. Int J Mol Sci 2015; 16:14961-78. [PMID: 26147426 PMCID: PMC4519882 DOI: 10.3390/ijms160714961] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 06/24/2015] [Accepted: 06/26/2015] [Indexed: 02/06/2023] Open
Abstract
Osteoarthritis (OA) is a chronic, progressive, and irreversible degenerative joint disease. Conventional OA treatments often result in complications such as pain and limited activity. However, transplantation of mesenchymal stem cells (MSCs) has several beneficial effects such as paracrine effects, anti-inflammatory activity, and immunomodulatory capacity. In addition, MSCs can be differentiated into several cell types, including chondrocytes, osteocytes, endothelia, and adipocytes. Thus, transplantation of MSCs is a suggested therapeutic tool for treatment of OA. However, transplanted naïve MSCs can cause problems such as heterogeneous populations including differentiated MSCs and undifferentiated cells. To overcome this problem, new strategies for inducing differentiation of MSCs are needed. One possibility is the application of microRNA (miRNA) and small molecules, which regulate multiple molecular pathways and cellular processes such as differentiation. Here, we provide insight into possible strategies for cartilage regeneration by transplantation of differentiated MSCs to treat OA patients.
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Affiliation(s)
- Onju Ham
- Catholic Kwandong University International St. Mary's Hospital, Incheon 404-834, Korea.
| | - Chang Youn Lee
- Department of Integrated Omics for Biomedical Sciences, Yonsei University, 50 Yonsei-ro, Seodamun-gu, Seoul 120-759, Korea.
| | - Ran Kim
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735, Korea.
| | - Jihyun Lee
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735, Korea.
| | - Sekyung Oh
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA.
| | - Min Young Lee
- Department of Molecular Physiology, College of Pharmacy, Kyungpook National University, Daegu 702-701, Korea.
| | - Jongmin Kim
- Department of Life Systems, Sookmyung Women's University, Seoul 140-742, Korea.
| | - Ki-Chul Hwang
- Catholic Kwandong University International St. Mary's Hospital, Incheon 404-834, Korea.
| | - Lee-So Maeng
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, the Catholic University of Korea, College of Medicine, Incheon 403-720, Korea.
| | - Woochul Chang
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735, Korea.
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18
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Chang W, Kim R, Park SI, Jung YJ, Ham O, Lee J, Kim JH, Oh S, Lee MY, Kim J, Park MS, Chung YA, Hwang KC, Maeng LS. Enhanced Healing of Rat Calvarial Bone Defects with Hypoxic Conditioned Medium from Mesenchymal Stem Cells through Increased Endogenous Stem Cell Migration via Regulation of ICAM-1 Targeted-microRNA-221. Mol Cells 2015; 38:643-50. [PMID: 26062554 PMCID: PMC4507031 DOI: 10.14348/molcells.2015.0050] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 04/22/2015] [Accepted: 04/24/2015] [Indexed: 01/08/2023] Open
Abstract
The use of conditioned medium from mesenchymal stem cells may be a feasible approach for regeneration of bone defects through secretion of various components of mesenchymal stem cells such as cytokines, chemokines, and growth factors. Mesenchymal stem cells secrete and accumulate multiple factors in conditioned medium under specific physiological conditions. In this study, we investigated whether the conditioned medium collected under hypoxic condition could effectively influence bone regeneration through enhanced migration and adhesion of endogenous mesenchymal stem cells. Cell migration and adhesion abilities were increased through overexpression of intercellular adhesion molecule-1 in hypoxic conditioned medium treated group. Intercellular adhesion molecule-1 was upregulated by microRNA-221 in mesenchymal stem cells because microRNAs are key regulators of various biological functions via gene expression. To investigate the effects in vivo, evaluation of bone regeneration by computed tomography and histological assays revealed that osteogenesis was enhanced in the hypoxic conditioned medium group relative to the other groups. These results suggest that behavioral changes of endogenous mesenchymal stem cells through microRNA-221 targeted-intercellular adhesion molecule-1 expression under hypoxic conditions may be a potential treatment for patients with bone defects.
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Affiliation(s)
- Woochul Chang
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735,
Korea
| | - Ran Kim
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735,
Korea
| | - Sang In Park
- Institute of Catholic Integrative Medicine, Incheon St. Mary’s Hospital, The Catholic University of Korea, College of Medicine, Incheon 403-720,
Korea
| | - Yu Jin Jung
- EIT/LOFUS Research Center, International St. Mary’s Hospital, Catholic Kwandong University, Incheon 404-834,
Korea
| | - Onju Ham
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752,
Korea
| | - Jihyun Lee
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735,
Korea
| | - Ji Hyeong Kim
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735,
Korea
| | - Sekyung Oh
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305,
USA
| | - Min Young Lee
- Department of Molecular Physiology, College of Pharmacy, Kyungpook National University, Daegu 702-701,
Korea
| | - Jongmin Kim
- Department of Life Systems, Sookmyung Women’s University, Seoul 140-742,
Korea
| | - Moon-Seo Park
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735,
Korea
| | - Yong-An Chung
- Institute of Catholic Integrative Medicine, Incheon St. Mary’s Hospital, The Catholic University of Korea, College of Medicine, Incheon 403-720,
Korea
| | - Ki-Chul Hwang
- Institute for Bio-Medical Convergence, College of Medicine, Catholic Kwandong University, Gangwon 210-701,
Korea
- Catholic Kwandong University International, St. Mary’s Hospital, Incheon 404-834,
Korea
| | - Lee-So Maeng
- Institute of Catholic Integrative Medicine, Incheon St. Mary’s Hospital, The Catholic University of Korea, College of Medicine, Incheon 403-720,
Korea
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19
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Jung YJ, Kim R, Ham HJ, Park SI, Lee MY, Kim J, Hwang J, Park MS, Yoo SS, Maeng LS, Chang W, Chung YA. Focused low-intensity pulsed ultrasound enhances bone regeneration in rat calvarial bone defect through enhancement of cell proliferation. Ultrasound Med Biol 2015; 41:999-1007. [PMID: 25701528 DOI: 10.1016/j.ultrasmedbio.2014.11.008] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 09/25/2014] [Accepted: 11/11/2014] [Indexed: 06/04/2023]
Abstract
A number of studies have reported the therapeutic potential of low-intensity pulsed ultrasound (LIPUS) for induction of bone repair. This study investigated whether bone regeneration might be enhanced by application of focused LIPUS to selectively stimulate fractured calvarial bone. To accomplish this, bone defects were surgically created in the middle of the skull of rats that were subsequently exposed to focused LIPUS. Bone regeneration was assessed by repeated computed tomography imaging after the operation, as well as histologic analysis with calcein, hematoxylin and eosin and proliferating cell nuclear antigen assay. At 6 wk after surgery, bone formation in the focused LIPUS-treated group improved significantly relative to the control. Interestingly, new bone tissue sprouted from focused LIPUS target points. Histologic analysis after exposure to focused LIPUS revealed that proliferating cells were significantly increased relative to the control. Taken together, these results suggest that focused LIPUS can improve re-ossification through enhancement of cell proliferation in calvarial defect sites.
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Affiliation(s)
- Yu Jin Jung
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, Catholic University of Korea, Incheon, Republic of Korea
| | - Ran Kim
- Department of Biology Education, College of Education, Pusan National University, Busan, Republic of Korea
| | - Hyun-Joo Ham
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, Catholic University of Korea, Incheon, Republic of Korea
| | - Sang In Park
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, Catholic University of Korea, Incheon, Republic of Korea
| | - Min Young Lee
- Department of Molecular Physiology, College of Pharmacy, Kyungpook National University, Daegu, Republic of Korea
| | - Jongmin Kim
- Department of Life Systems, Sookmyung Women's University, Yongsan-gu Seoul, Republic of Korea
| | - Jihwan Hwang
- Department of Microbiology, College of Natural Science, Pusan National University, Busan, Republic of Korea
| | - Moon-Seo Park
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, Catholic University of Korea, Incheon, Republic of Korea
| | - Seung-Schik Yoo
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Lee-So Maeng
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, Catholic University of Korea, Incheon, Republic of Korea
| | - Woochul Chang
- Department of Biology Education, College of Education, Pusan National University, Busan, Republic of Korea.
| | - Yong-An Chung
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, College of Medicine, Catholic University of Korea, Incheon, Republic of Korea.
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20
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Song IU, Chung SW, Kim YD, Maeng LS. Relationship between the hs-CRP as non-specific biomarker and Alzheimer's disease according to aging process. Int J Med Sci 2015; 12:613-7. [PMID: 26283879 PMCID: PMC4532967 DOI: 10.7150/ijms.12742] [Citation(s) in RCA: 29] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 07/06/2015] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Microglia are involved in immune surveillance in intact brains and become activated in response to inflammation and neurodegeneration. Microglia have different functions, neuroprotective or neurotoxic, according to aging in patients with PD. The clinical effect of microglia in patients with Alzheimer's disease (AD) is poorly defined. This prospective study was conducted to investigate the clinical effects of microglia according to the aging process in newly diagnosed AD. METHODS We examined 532 patients with newly diagnosed AD and 119 healthy controls, and the differences in hs-CRP between these groups were investigated. The patients with AD were classified into 3 subgroups according to age of newly diagnosed AD to investigate the relationship between hs-CRP and the aging process in newly diagnosed AD. RESULTS There was significantly higher serum high-sensitivity C-reactive protein (hs-CRP), levels in patients with AD compared with healthy controls. A post-hoc analysis of the 3 AD subgroups showed no significant differences in serum hs-CRP level between each group. CONCLUSION We assumed that neuroinflammation play a role in the pathogenesis of AD, but found no clinical evidence that microglia senescence underlies the microglia switch from neuroprotective in young brains to neurotoxic in aged brains. To clarify the role of microglia and aging in the pathogenesis of AD, future longitudinal studies involving a large cohort are required.
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Affiliation(s)
- In-Uk Song
- 1. Department of Neurology, Incheon St. Mary's Hospital, The Catholic University of Korea
| | - Sung-Woo Chung
- 1. Department of Neurology, Incheon St. Mary's Hospital, The Catholic University of Korea
| | - Young-Do Kim
- 1. Department of Neurology, Incheon St. Mary's Hospital, The Catholic University of Korea
| | - Lee-So Maeng
- 2. Department of Pathology, Incheon St. Mary's Hospital, The Catholic University of Korea
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21
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Ham O, Lee CY, Song BW, Lee SY, Kim R, Park JH, Lee J, Seo HH, Lee CY, Chung YA, Maeng LS, Lee MY, Kim J, Hwang J, Woo DK, Chang W. Upregulation of miR-23b enhances the autologous therapeutic potential for degenerative arthritis by targeting PRKACB in synovial fluid-derived mesenchymal stem cells from patients. Mol Cells 2014; 37:449-56. [PMID: 24916040 PMCID: PMC4086338 DOI: 10.14348/molcells.2014.0023] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Revised: 05/21/2014] [Accepted: 05/22/2014] [Indexed: 01/05/2023] Open
Abstract
The use of synovial fluid-derived mesenchymal stem cells (SFMSCs) obtained from patients with degenerative arthropathy may serve as an alternative therapeutic strategy in osteoarthritis (OA) and rheumatoid arthritis (RA). For treatment of OA and RA patients, autologous transplantation of differentiated MSCs has several beneficial effects for cartilage regeneration including immunomodulatory activity. In this study, we induced chondrogenic differentiation of SFMSCs by inhibiting protein kinase A (PKA) with a small molecule and microRNA (miRNA). Chondrogenic differentiation was confirmed by PCR and immunocytochemistry using probes specific for aggrecan, the major cartilaginous proteoglycan gene. Absorbance of alcian blue stain to detect chondrogenic differentiation was increased in H-89 and/or miRNA-23btransfected cells. Furthermore, expression of matrix metalloproteinase (MMP)-9 and MMP-2 was decreased in treated cells. Therefore, differentiation of SFMSCs into chondrocytes through inhibition of PKA signaling may be a therapeutic option for OA or RA patients.
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Affiliation(s)
- Onju Ham
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul 120-752,
Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752,
Korea
| | - Chang Youn Lee
- Department of Integrated Omics for Biomedical Sciences, Graduate School, Yonsei University, Seoul 120-759,
Korea
| | - Byeong-Wook Song
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul 120-752,
Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752,
Korea
| | - Se-Yeon Lee
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul 120-752,
Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752,
Korea
| | - Ran Kim
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735,
Korea
| | - Jun-Hee Park
- Department of Integrated Omics for Biomedical Sciences, Graduate School, Yonsei University, Seoul 120-759,
Korea
| | - Jiyun Lee
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul 120-752,
Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752,
Korea
| | - Hyang-Hee Seo
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul 120-752,
Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752,
Korea
| | - Chae Yoon Lee
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735,
Korea
| | - Yong-An Chung
- Institute of Catholic Integrative Medicine, Incheon St. Mary’s Hospital, The Catholic University of Korea College of Medicine, Incheon 403-720,
Korea
| | - Lee-So Maeng
- Institute of Catholic Integrative Medicine, Incheon St. Mary’s Hospital, The Catholic University of Korea College of Medicine, Incheon 403-720,
Korea
| | - Min Young Lee
- Department of Molecular Physiology, College of Pharmacy, Kyungpook National University, Daegu 702-701,
Korea
| | - Jongmin Kim
- Department of Life Systems, Sookmyung Women’s University, Seoul 140-742,
Korea
| | - Jihwan Hwang
- Department of Microbiology, College of Natural Science, Pusan National University, Busan 609-735,
Korea
| | - Dong Kyun Woo
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 660-701,
Korea
| | - Woochul Chang
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735,
Korea
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Lee JY, Kim SY, Mo EY, Kim ES, Han JH, Maeng LS, Lee AH, Eun JW, Nam SW, Moon SD. Upregulation of FGFR1 expression is associated with parathyroid carcinogenesis in HPT-JT syndrome due to an HRPT2 splicing mutation. Int J Oncol 2014; 45:641-50. [PMID: 24889687 DOI: 10.3892/ijo.2014.2477] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 04/26/2014] [Indexed: 11/06/2022] Open
Abstract
Mutations of the HRPT2 gene, which are responsible for hyperparathyroidism-jaw tumor (HPT-JT) syndrome, have been implicated in the development of a high proportion of parathyroid carcinomas. The aim of this study was to investigate differences in expression of the most important genes connected with parathyroid carcinoma between HPT-JT syndrome due to an HRPT2 splicing mutation, normal parathyroid tissue and sporadic parathyroid adenoma. Total RNAs were extracted from parathyroid carcinoma in HPT-JT syndrome harbouring HRPT2 splicing mutation or sporadic parathyroid adenoma and normal parathyroid gland, and subjected to Illumina DASL-based gene expression assay. Unsupervised hierarchical clustering analysis was used to compare gene expression in HPT-JT syndrome, sporadic parathyroid adenoma and normal parathyroid glands. We identified differentially regulated genes in HPT-JT syndrome and sporadic parathyroid adenoma relative to normal parathyroid glands using a combination of Welch's t-test and fold-change analysis. Quantitative PCR, RT-PCR and IHC were used for validation. Sixteen genes differentially regulated in the parathyroid carcinoma were associated with signal pathways, MAPK, regulation of actin cytoskeleton, prostate cancer and apoptosis. FGFR1 expression was confirmed to be significantly upregulated by validation experiments. Our gene expression profiling experiments suggest that upregulated FGFR1 expression appears to be associated with parathyroid carcinoma in HPT-JT syndrome due to an HRPT2 splicing mutation.
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Affiliation(s)
- Ji-Young Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Bupyeong-gu, Incheon 403-720, Republic of Korea
| | - Su Yeon Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Bupyeong-gu, Incheon 403-720, Republic of Korea
| | - Eun-Yeong Mo
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Bupyeong-gu, Incheon 403-720, Republic of Korea
| | - Eun-Sook Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Bupyeong-gu, Incheon 403-720, Republic of Korea
| | - Je-Ho Han
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Bupyeong-gu, Incheon 403-720, Republic of Korea
| | - Lee-So Maeng
- Department of Hospital Pathology, Incheon St. Mary's Hospital, The Catholic University of Korea, Bupyeong-gu, Incheon 403-720, Republic of Korea
| | - An-Hee Lee
- Department of Hospital Pathology, Incheon St. Mary's Hospital, The Catholic University of Korea, Bupyeong-gu, Incheon 403-720, Republic of Korea
| | - Jung Woo Eun
- Department of Pathology, Microdissection Genomics Research Center, College of Medicine, The Catholic University of Korea, Seocho-gu, Seoul 137-701, Republic of Korea
| | - Suk Woo Nam
- Department of Pathology, Microdissection Genomics Research Center, College of Medicine, The Catholic University of Korea, Seocho-gu, Seoul 137-701, Republic of Korea
| | - Sung-Dae Moon
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Bupyeong-gu, Incheon 403-720, Republic of Korea
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23
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Chang W, Park SI, Jun SY, Lee EJ, Ham HJ, Bae Y, Kim R, Park MS, Chung YA, Im N, Yoo SS, Lee MY, Kim J, Hwang KC, Yoon C, Maeng LS. Therapeutic potential of autologous mesenchymal stem cells derived from synovial fluid in patients with degenerative arthritis. Anim Cells Syst (Seoul) 2013. [DOI: 10.1080/19768354.2013.832705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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24
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Chang W, Lee CY, Park JH, Park MS, Maeng LS, Yoon CS, Lee MY, Hwang KC, Chung YA. Survival of hypoxic human mesenchymal stem cells is enhanced by a positive feedback loop involving miR-210 and hypoxia-inducible factor 1. J Vet Sci 2013; 14:69-76. [PMID: 23388440 PMCID: PMC3615234 DOI: 10.4142/jvs.2013.14.1.69] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [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: 04/06/2012] [Accepted: 08/08/2012] [Indexed: 12/03/2022] Open
Abstract
The use of mesenchymal stem cells (MSCs) has emerged as a potential new treatment for myocardial infarction. However, the poor viability of MSCs after transplantation critically limits the efficacy of this new strategy. The expression of microRNA-210 (miR-210) is induced by hypoxia and is important for cell survival under hypoxic conditions. Hypoxia increases the levels of hypoxia inducible factor-1 (HIF-1) protein and miR-210 in human MSCs (hMSCs). miR-210 positively regulates HIF-1α activity. Furthermore, miR-210 expression is also induced by hypoxia through the regulation of HIF-1α. To investigate the effect of miR-210 on hMSC survival under hypoxic conditions, survival rates along with signaling related to cell survival were evaluated in hMSCs over-expressing miR-210 or ones that lacked HIF-1α expression. Elevated miR-210 expression increased survival rates along with Akt and ERK activity in hMSCs with hypoxia. These data demonstrated that a positive feedback loop involving miR-210 and HIF-1α was important for MSC survival under hypoxic conditions.
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Affiliation(s)
- Woochul Chang
- Department of Biology Education, College of Education, Pusan National University, Busan 609-735, Korea
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Sim EH, Kwon JH, Kim SY, Jung SM, Maeng LS, Jang JW, Chung KW. Severe steatohepatitis with hepatic decompensation resulting from malnutrition after pancreaticoduodenectomy. Clin Mol Hepatol 2012; 18:404-10. [PMID: 23323257 PMCID: PMC3540378 DOI: 10.3350/cmh.2012.18.4.404] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 08/09/2011] [Accepted: 09/10/2011] [Indexed: 12/11/2022] Open
Abstract
The most common finding related to nonalcoholic steatohepatitis is obesity, but a status of severe malnutrition can also induce the steatohepatitis. The authors report a rare case of steatohepatitis leading to hepatic decompensation caused by malnutrition after pancreaticoduodenectomy. A 68-year-old female patient who had been previously diagnosed with pancreatic cancer and had undergone pancreaticoduodenectomy 5 months previously presented with abdominal distension. Routine CT performed 3 months after the surgery revealed severe fatty liver without evidence of tumor recurrence. After undergoing pancreaticoduodenectomy her food intake had reduced, and as a result she had lost 7 kg of body weight over 2 months. At this admission, CT revealed moderate amounts of ascites without tumor recurrence. Furthermore, her albumin and lipid profile levels were markedly decreased, and she had a flapping tremor and slurred speech suggestive of hepatic encephalopathy. Her liver biopsy findings were consistent with steatohepatitis and disclosed macrovesicular steatosis without definite fibrosis. After careful nutritional control, her symptoms disappeared and her laboratory findings improved.
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Affiliation(s)
- Eun Hui Sim
- Department of Internal Medicine, Incheon St. Mary's hospital, The Catholic University of Korea College of Medicine, Incheon, Korea
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26
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Han EJ, Lee SH, Song IU, Chung YA, Maeng LS. Simultaneous adrenal pheochromocytoma and carotid body paraganglioma in a woman. Nucl Med Mol Imaging 2012; 47:67-8. [PMID: 24895513 DOI: 10.1007/s13139-012-0179-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2012] [Revised: 08/21/2012] [Accepted: 10/02/2012] [Indexed: 12/21/2022] Open
Affiliation(s)
- Eun Ji Han
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Sang-Hoon Lee
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - In Uk Song
- Department of Neurology, College of Medicine, The Catholic University of Korea, Incheon, South Korea
| | - Yong-An Chung
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 665 Bupyeong-dong, Bupyeong-gu, Incheon, South Korea 403-720
| | - Lee-So Maeng
- Department of Clinicopathology, College of Medicine, The Catholic University of Korea, Incheon, South Korea
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27
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Kim H, Taghados SJ, Fischer K, Maeng LS, Park S, Yoo SS. Noninvasive transcranial stimulation of rat abducens nerve by focused ultrasound. Ultrasound Med Biol 2012; 38:1568-75. [PMID: 22763009 PMCID: PMC3428140 DOI: 10.1016/j.ultrasmedbio.2012.04.023] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Revised: 03/27/2012] [Accepted: 04/30/2012] [Indexed: 05/09/2023]
Abstract
Nonpharmacologic and nonsurgical transcranial modulation of the nerve function may provide new opportunities in evaluation and treatment of cranial nerve diseases. This study investigates the possibility of using low-intensity transcranial focused ultrasound (FUS) to selectively stimulate the rat abducens nerve located above the base of the skull. FUS (frequencies of 350 kHz and 650 kHz) operating in a pulsed mode was applied to the abducens nerve of Sprague-Dawley rats under stereotactic guidance. The abductive eyeball movement ipsilateral to the side of sonication was observed at 350 kHz, using the 0.36-msec tone burst duration (TBD), 1.5-kHz pulse repetition frequency (PRF), and the overall sonication duration of 200 msec. Histologic and behavioral monitoring showed no signs of disruption in the blood brain barrier (BBB), as well as no damage to the nerves and adjacent brain tissue resulting from the sonication. As a novel functional neuro-modulatory modality, the pulsed application of FUS has potential for diagnostic and therapeutic applications in diseases of the peripheral nervous system.
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Affiliation(s)
- Hyungmin Kim
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Department of Mechanical Engineering, Korea University, Seoul, Korea
| | | | - Krisztina Fischer
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Lee-So Maeng
- Institute of Catholic Integrative Medicine (ICIM), Incheon Saint Mary’s Hospital, The Catholic University of Korea, Incheon, Korea
| | - Shinsuk Park
- Department of Mechanical Engineering, Korea University, Seoul, Korea
| | - Seung-Schik Yoo
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
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28
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Chang W, Lim S, Song BW, Lee CY, Park MS, Chung YA, Yoon C, Lee SY, Ham O, Park JH, Choi E, Maeng LS, Hwang KC. Phorbol myristate acetate differentiates human adipose-derived mesenchymal stem cells into functional cardiogenic cells. Biochem Biophys Res Commun 2012; 424:740-6. [PMID: 22809507 DOI: 10.1016/j.bbrc.2012.07.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [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: 06/26/2012] [Accepted: 07/09/2012] [Indexed: 01/20/2023]
Abstract
To achieve effective regeneration of injured myocardium, it is important to find physiological way of improving the cardiogenic differentiation of stem cells. Previous studies demonstrated that cardiomyocytes from bone marrow-derived mesenchymal stem cells (BMSCs) activated with phorbolmyristate acetate (PMA), a protein kinase C (PKC) activator, restore electromechanical function in infarcted rat hearts. In this study, we investigated the effect of PMA on cardiogenic differentiation of adipose-derived MSCs (ASCs) for clinical applications. To confirm the effect of PMA, ASCs treated with 1μM PMA were grown for nine days. The expression of cardiac-specific markers (cardiac troponin T, myosin light chain, myosin heavy chain) in PMA-treated MSCs was demonstrated by immunocytochemistry. Alhough few α(1A) receptors exist in ASCs, α(1)-adrenergic receptor subtypes were preferentially expressed in PMA-treated ASCs. Moreover, expression of the β-adrenergic and muscarinic receptors increased in PMA-treated ASCs compared to normal cells. The mRNA levels of Ca(2+)-related factors (SERCA 2a; sarcoplasmic reticulum Ca(2+)-ATPase, LTCC; L-type Ca(2+) channel) in treated ASCs were similar to the levels in cardiomyocytes. Following the transplantation of chemically activated cardiogenic ASCs into infarcted myocardium, histological analysis showed that infarct size, interstitial fibrosis, and apoptotic index were markedly decreased and cardiac function was restored. In conclusion, PMA might induce the cardiogenic differentiation of human ASCs as well as BMSCs. This result suggests successful use of human ASCs in cardiac regeneration therapy.
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Affiliation(s)
- Woochul Chang
- Institute of Catholic Integrative Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Incheon 403-720, Republic of Korea
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29
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Kim MW, Chung YC, Jung HC, Park MS, Han YM, Chung YA, Maeng LS, Park SI, Lim J, Im WS, Chung JY, Kim M, Mook I, Kim M. Electroacupuncture enhances motor recovery performance with brain-derived neurotrophic factor expression in rats with cerebral infarction. Acupunct Med 2012; 30:222-6. [PMID: 22729070 DOI: 10.1136/acupmed-2011-010126] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE Electroacupuncture (EA) is a traditional medicine in patients with post-stroke rehabilitation. Brain-derived neurotrophic factor (BDNF) is a potent growth factor involved in recovery following cerebral injury. The aim of the present study was to investigate whether EA increases BDNF levels and facilitates functional recovery. METHODS Occlusion of the middle cerebral artery was performed in rats (N=12) followed by reperfusion. EA was applied at the GV20 (Baihui) acupoint. Motor and sensory functions were monitored on the Garcia scale for 2 weeks. Expressions of BDNF and receptor tyrosine kinase B (trkB) were determined by immunoblotting and immunohistochemistry. RESULTS Improvement of Garcia scores, particularly in motor performance, were noted in the group with EA stimulation (p<0.05). With EA application, BDNF was elevated in the ischaemic hemisphere with increased numbers of BDNF(+) cells. Increased expression of trkB was also detected. CONCLUSION These results indicate that EA at GV20 improves motor recovery and stimulates BDNF/trkB expression in rats with cerebral ischaemia.
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Affiliation(s)
- Min-Wook Kim
- Institute of Catholic Integrative Medicine, Incheon St. Mary’s Hospital, Catholic University, Seoul, Korea
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30
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Hahn HS, Maeng LS, Ro DY, Kim JH, Kim YW. Lobular endocervical glandular hyperplasia in a woman with Peutz–Jeghers syndrome: a case report. Eur J Obstet Gynecol Reprod Biol 2012; 160:117-8. [DOI: 10.1016/j.ejogrb.2011.09.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 08/26/2011] [Accepted: 09/30/2011] [Indexed: 02/06/2023]
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31
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Hwang SM, Kim BW, Chae HS, Lee BI, Choi H, Ji JS, Choi KY, Chung IS, Maeng LS. Gastric fundic gland polyps and their relationship to colorectal neoplasia in Koreans: a 16-year retrospective study. Korean J Gastroenterol 2011; 58:20-4. [PMID: 21778799 DOI: 10.4166/kjg.2011.58.1.20] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND/AIMS There is an ongoing debate on the relationship between gastric fundic gland polyps and increased incidence of colorectal neoplasia in Caucasians. However, there was no report on the relationship between gastric fundic gland polyp and colorectal neoplasia in Korea. The aim of this study was to identify the characteristics of gastric fundic gland polyps and whether a relationship exists between fundic gland polyps and colorectal neoplasia in Korean population. METHODS Persons who underwent an esophagogastroduodenoscopy and colonoscopy from 1992 to 2007 at the Health Promotion Center of Incheon St. Mary's Hospital, The Catholic University of Korea were reviewed retrospectively. The relationship between gastric fundic gland polyps and colorectal neoplasia were analyzed. RESULTS Among 22,451 subjects, fundic gland polyps were found in 328 subjects (1.5%). Fundic gland polyps were more common in women than in men (odds ratio of 6.25; 95% CI of 4.68-8.34). The odds ratios for colorectal neoplasia in all subjects with gastric fundic gland polyps were 0.56 (95% CI of 0.33-0.95) and men who were 50 years of age or older had an odds ratio of 2.81 (95% CI of 1.03-7.66) as compared to the control group. However, age and sex-adjusted odds ratios for all gastric fundic gland polyps were 0.73 (95% CI of 0.42-1.26), for men 1.78 (95% CI of 0.80-3.98), and for women 0.37 (95% CI of 0.16-0.87). CONCLUSIONS Surveillance colonoscopy in patients with fundic gland polyps can be performed in the same manner as general population in Korea.
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Affiliation(s)
- Sun-Mee Hwang
- Department of Internal Medicine, The Catholic University of Korea, College of Medicine, Seoul, Korea
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32
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Park BJ, Kim YW, Maeng LS, Kim TE. Disseminated peritoneal leiomyomatosis after hysterectomy: a case report. J Reprod Med 2011; 56:456-460. [PMID: 22010532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND Disseminated peritoneal leiomyomatosis (DPL) is a rare disease characterized by multiple benign leiomyomas arising in the pelvic and abdominal cavities in women. DPL is observed particularly in reproductive age groups and often mimics carcinomatosis grossly, but with benign histology and a favorable prognosis. The possible causes could be divided into hormonal, subperitoneal mesenchymal stem cells, metaplasia, genetic or iatrogenic after morcellation of myoma during laparoscopic surgery. Management includes surgery followed by adjuvant hormonal therapy, systemic chemotherapy or aromatase inhibitor treatment in cases of nonresectable disease. CASE We report a case of DPL occurring after 2 previous operations including myomectomy and hysterectomy. After the DPL operation, the patient was treated with a gonadotropin-releasing hormone agonist for 6 months. One year after surgery, image analysis showed no evidence of disease. CONCLUSION This rare condition must be considered even when a patient presents with abdominal masses after myomectomy followed by hysterectomy.
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Affiliation(s)
- Byung-Joon Park
- Department of Obstetrics and Gynecology, College of Medicine, The Catholic University of Korea, Incheon St. Mary's Hospital, Incheon, Korea
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33
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Ji JS, Lee BI, Kim HK, Cho YS, Choi H, Kim BW, Kim SW, Kim SS, Chae HS, Choi KY, Maeng LS. Antimigration property of a newly designed covered metal stent for esophageal stricture: an in vivo animal study. Gastrointest Endosc 2011; 74:148-53. [PMID: 21704813 DOI: 10.1016/j.gie.2011.03.1252] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Accepted: 03/28/2011] [Indexed: 02/08/2023]
Abstract
BACKGROUND Covered self-expandable metal stents (SEMSs) are associated with a higher migration rate than uncovered SEMSs. OBJECTIVE The antimigration property of a novel covered SEMS was investigated in a canine esophageal stricture model. DESIGN The new stent (80 mm in length, 20 or 24 mm in diameter) has multiple protuberances on its body that were designed to be separated from the inner silicone membrane so that they could be embedded into the mucosa after deployment. Twenty-two beagle dogs were subjected to circumferential EMR in the middle esophagus for stricture formation. After 2 weeks, conventional covered stents were inserted in a control group (n = 11), and the newly designed covered SEMSs were inserted in a study group (n = 11). SETTING Animal laboratory. INTERVENTIONS Circumferential EMR of the middle esophagus for stricture formation, followed by endoscopic placement of a conventional or newly designed stent. MAIN OUTCOME MEASUREMENTS Migration, complications, survival, and esophageal histopathology. RESULTS There was no significant difference in the diameter of the esophageal stricture between the control and study groups (10 mm vs 11 mm, P = .52). Within 3 days, all stents in the control group had migrated, whereas 6 had migrated in the study group (100% vs 55%, P = .035). There were no significant complications directly associated with stent insertion. LIMITATIONS Complications, survival, and esophageal histopathology could not be compared because all of the conventional stents migrated in the control group within 3 days. CONCLUSIONS The newly designed covered SEMS is more resistant to migration than the conventional covered SEMS.
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Affiliation(s)
- Jeong-Seon Ji
- Department of Internal Medicine, School of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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34
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Min BK, Bystritsky A, Jung KI, Fischer K, Zhang Y, Maeng LS, In Park S, Chung YA, Jolesz FA, Yoo SS. Focused ultrasound-mediated suppression of chemically-induced acute epileptic EEG activity. BMC Neurosci 2011; 12:23. [PMID: 21375781 PMCID: PMC3061951 DOI: 10.1186/1471-2202-12-23] [Citation(s) in RCA: 183] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 03/06/2011] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Epilepsy is a common neurological disorder, which is attributed to uncontrollable abnormal hyper-excitability of neurons. We investigated the feasibility of using low-intensity, pulsed radiation of focused ultrasound (FUS) to non-invasively suppress epileptic activity in an animal model (rat), which was induced by the intraperitonial injection of pentylenetetrazol (PTZ). RESULTS After the onset of induced seizures, FUS was transcranially administered to the brain twice for three minutes each while undergoing electroencephalographic (EEG) monitoring. An air-backed, spherical segment ultrasound transducer (diameter: 6 cm; radius-of-curvature: 7 cm) operating at a fundamental frequency of 690 KHz was used to deliver a train of 0.5 msec-long pulses of sonication at a repetitive rate of 100 Hz to the thalamic areas of the brain. The acoustic intensity (130 mW/cm2) used in the experiment was sufficiently within the range of safety guidelines for the clinical ultrasound imaging. The occurrence of epileptic EEG bursts from epilepsy-induced rats significantly decreased after sonication when it was compared to the pre-sonication epileptic state. The PTZ-induced control group that did not receive any sonication showed a sustained number of epileptic EEG signal bursts. The animals that underwent sonication also showed less severe epileptic behavior, as assessed by the Racine score. Histological analysis confirmed that the sonication did not cause any damage to the brain tissue. CONCLUSIONS These results revealed that low-intensity, pulsed FUS sonication suppressed the number of epileptic signal bursts using acute epilepsy model in animal. Due to its non-invasiveness and spatial selectivity, FUS may offer new perspectives for a possible non-invasive treatment of epilepsy.
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Affiliation(s)
- Byoung-Kyong Min
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Alexander Bystritsky
- The Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Kwang-Ik Jung
- Department of Physical Medicine & Rehabilitation, Hallym University Sacred Heart Hospital, Medical College of Hallym University, Anyang, Korea
| | - Krisztina Fischer
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Yongzhi Zhang
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Lee-So Maeng
- Institute of Catholic Integrative Medicine (ICIM), Incheon Saint Mary's Hospital, The Catholic University of Korea, Incheon, Korea
| | - Sang In Park
- Institute of Catholic Integrative Medicine (ICIM), Incheon Saint Mary's Hospital, The Catholic University of Korea, Incheon, Korea
| | - Yong-An Chung
- Institute of Catholic Integrative Medicine (ICIM), Incheon Saint Mary's Hospital, The Catholic University of Korea, Incheon, Korea
| | - Ferenc A Jolesz
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Seung-Schik Yoo
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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Park MS, Sunwoo YY, Jang KS, Han YM, Kim MW, Maeng LS, Hong YP, O JH, Chung YA. Changes in brain FDG metabolism induced by acupuncture in healthy volunteers. Acta Radiol 2010; 51:947-52. [PMID: 20735279 DOI: 10.3109/02841851.2010.502541] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND With the aid of newly developed functional brain imaging studies, studies are ongoing to see if acupuncture first acts on specific brain areas to induce effects on the human body. PURPOSE To examine if stimulation at specific acupuncture points changes brain glucose metabolism patterns, including the limbic system and specific brain areas related to the acupuncture effect in healthy volunteers using fluorodeoxyglucose positron emission tomography combined computed tomography (FDG-PET/CT). MATERIAL AND METHODS Twenty healthy volunteers (11 men and 9 women; mean age 49.1+/-7.3 years, age range 35-62 years) were included. Two sets of PET/CT scans were obtained from each volunteer, with and without stimulation by acupuncture. Two classic acupoints, LR3 (liver meridian) and ST44 (stomach meridian) were tested at the same time, using disposable sterile stainless steel needles. After initial acupuncture, the needle was kept in place without further stimulation. FDG-PET/CT scan of the brain began 45 min after FDG injection (185-222 MBq). RESULTS After stimulation of LR3 and ST44 by acupuncture, glucose metabolism in the brain was increased in the left insula (BA 13), bilateral thalami, superior frontal region of the right frontal lobe, and the inferior frontal region of left frontal lobe compared with baseline. On the other hand, glucose metabolism was decreased after acupuncture in the cingulate and parahippocampal (BA 36) regions of the left limbic lobe. CONCLUSION Changes of glucose metabolism in specific brain areas following stimulation by acupuncture on LR3 and ST44 were documented using FDG-PET/CT.
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Affiliation(s)
- Moon-Seo Park
- Department of Preventive Medicine, Chung-Ang University, College of Medicine, Seoul, Korea
- Institute of Catholic Integrative Medicine (ICIM), Incheon St Mary's Hospital, Catholic University of Korea, Incheon
| | - Yun-Young Sunwoo
- Institute of Catholic Integrative Medicine (ICIM), Incheon St Mary's Hospital, Catholic University of Korea, Incheon
| | - Kyung-Sool Jang
- Institute of Catholic Integrative Medicine (ICIM), Incheon St Mary's Hospital, Catholic University of Korea, Incheon
| | - Young-Min Han
- Institute of Catholic Integrative Medicine (ICIM), Incheon St Mary's Hospital, Catholic University of Korea, Incheon
| | - Min-Wook Kim
- Institute of Catholic Integrative Medicine (ICIM), Incheon St Mary's Hospital, Catholic University of Korea, Incheon
| | - Lee-So Maeng
- Institute of Catholic Integrative Medicine (ICIM), Incheon St Mary's Hospital, Catholic University of Korea, Incheon
| | - Yeon-Pyo Hong
- Department of Preventive Medicine, Chung-Ang University, College of Medicine, Seoul, Korea
- Institute of Catholic Integrative Medicine (ICIM), Incheon St Mary's Hospital, Catholic University of Korea, Incheon
| | - Joo-Hyun O
- Department of Radiology, College of Medicine, Catholic University of Korea, Seoul, Korea
| | - Yong-An Chung
- Institute of Catholic Integrative Medicine (ICIM), Incheon St Mary's Hospital, Catholic University of Korea, Incheon
- Department of Radiology, College of Medicine, Catholic University of Korea, Seoul, Korea
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Moon S, Kim JH, Shim JY, Ahn YB, Song KH, Cha BY, Maeng LS, Han JH. Analysis of aberrantly spliced HRPT2 transcripts and the resulting proteins in HPT-JT syndrome. Mol Genet Metab 2010; 100:365-71. [PMID: 20541447 DOI: 10.1016/j.ymgme.2010.03.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Accepted: 03/22/2010] [Indexed: 11/28/2022]
Abstract
The risk for parathyroid carcinoma is high in those with the HPT-JT syndrome. Parafibromin is a protein derived from HRPT2 gene and its inactivation has been coupled to familial form of parathyroid malignancy. We previously identified altered transcripts resulting from splice site mutation of the HRPT2 gene in a family with this syndrome. In the present work, we investigated the stability of the altered HRPT2 transcripts and translation products produced in the HPT-JT syndrome. We quantified the differentially expressed HRPT2 mRNAs using real-time RT-PCR and developed a novel monoclonal parafibromin antibody to study the expression of parafibromin in the HPT-JT syndrome. The relative quantification ratios of the wild type HRPT2 mRNA, 23 bp deleted HRPT2 mRNA, and 70 bp deleted HRPT2 mRNA in the HPT-JT syndrome were 0.68, 0.17 and 0.15, respectively. But endogenous parafibromin expression was not detectable in the HPT-JT syndrome carcinoma. The altered HRPT2 mRNAs resulting from the splice site mutation in the HPT-JT syndrome were stable, but their parafibromin translation products from the HPT-JT syndrome carcinoma were probably degraded rapidly. Additional studies that aim to fully characterize the consequences of altered HRPT2 mRNAs in HPT-JT syndrome are required to explore these possibilities.
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Affiliation(s)
- Sungdae Moon
- Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
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Maeng LS, Chae HS, Lee A, Chung Y, Lee KY. Fine Needle Aspiration Biopsy of a Myxoid Leiomyosarcoma with Epithelioid Features and It Metastasized to the Abdominal Wall - A Case Report -. Korean J Pathol 2010. [DOI: 10.4132/koreanjpathol.2010.44.2.220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Lee-So Maeng
- Department of Hospital Pathology, Incheon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Incheon, Korea
| | - Hiun Suk Chae
- Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Incheon, Korea
| | - Anhi Lee
- Department of Hospital Pathology, Incheon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Incheon, Korea
| | - Yongan Chung
- Department of Radiology, Incheon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Incheon, Korea
| | - Kyo-Young Lee
- Department of Hospital Pathology, Incheon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Incheon, Korea
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Affiliation(s)
- Lee-So Maeng
- Department of Hospital Pathology, Incheon Saint Mary's Hospital, College of Medicine, Catholic University of Korea, Incheon, Korea
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Kim BW, Kim KM, Lee BI, Maeng LS, Choi H, Cho SH, Chae HS, Kim JK, Choi KY, Chung IS. Expression of trefoil peptides in the subtypes of intestinal metaplasia. Peptides 2004; 25:779-83. [PMID: 15177872 DOI: 10.1016/j.peptides.2003.12.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2003] [Accepted: 12/08/2003] [Indexed: 11/18/2022]
Abstract
We studied the expression of trefoil peptides in the different types of intestinal metaplasia of the stomach. Endoscopic biopsy was performed in 132 patients with dyspepsia. Intestinal metaplasia subtype was classified according to the pattern of alcian blue/PAS staining and high iron diamine staining. Expression of trefoil peptides was measured by immunohistochemistry. TFF1 and TFF3 were mainly expressed in goblet cells and TFF2 in columnar cells in all the types of intestinal metaplasia. There was a gradual decrease of TFF1 and TFF3, and increase of TFF2, during the progression of intestinal metaplasia from type I to type III via the type II intermediate.
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Affiliation(s)
- Byung-Wook Kim
- Department of Internal Medicine, The Catholic University of Korea, Seoul, South Korea.
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