Skip Navigation
Skip to contents

Endocrinol Metab : Endocrinology and Metabolism

clarivate
OPEN ACCESS
SEARCH
Search

Search

Page Path
HOME > Search
14 "Kyu Lim"
Filter
Filter
Article type
Keywords
Publication year
Authors
Original Article
Diagnostic Value of Thallium-201 Scan in The Thyroid Nodule.
Jeong Sik Moon, Kee Hyeon Kim, Chul Sung Park, Jae Haak Lee, Gyeong Heon Jeong, Sun Ho Kim, Jung Kyu Lim, Chin Duk Huh, Hyeng Suk Cho, Jang Shin Son
J Korean Endocr Soc. 1996;11(2):175-181.   Published online November 7, 2019
  • 1,231 View
  • 25 Download
AbstractAbstract PDF
To investigate diagnostic value of Thallium 201(T1-201) thymid scan in differentiating malignant nodule from benign, 135 patients with thyroid nodule were evaluated with Tl-201 thyroid scan, fine needle aspiration(FNA), clinical characteristics and laboratory data. Each had histological diagnosis after thyroidectomy. Tl-201 scan had a sensitivity of 67.3% and a specificity of 66.3% and FNA had sermitivity of 46.9% and specificity of 100% in predicting malignancy. As the size of thyroid nodule and age of patient incteases, diagnostic value of 11-201 thyroid scan was improved. In the thyroid nodules larger then 3cm, sensitivity, specificity and negative predictive value were 100%, 70% and 100%, reqectively. By cornbining Tl-201 throid scan and FNA, sensitivity had 91.8%. From the data we conclude that Tl-201 thyroid scan is valuable with adjuvant diagnostic method in differentiating malignant fmm benign thyroid nodule and treatment planning.
Close layer
Case Reports
A Case of Polyglandular Autoimmune Syndrome.
In Pyo Jun, Suck Hwan Lim, Won Hyep Bae, Seung Jun Kim, Youn Ho Lee, Sun Ho Kim, Jung Kyu Lim, Jin Duk Hur
J Korean Endocr Soc. 1994;10(2):142-147.   Published online November 6, 2019
  • 1,168 View
  • 20 Download
AbstractAbstract PDF
Polyglandular autoimmune(PGA) syndrome designates the dysfunction of endocrine and nonendocrine system involving two or more glands on the basis of autoimmunity. There are three types of PGA syndrome and their pathogenesis is still not completely understood. A 27-year-old woman developed polyglandular autoimmune syndrome manifesting insulin-dependent diabetes mellitus, myasthenia gravis and Graves' disease associated papillary thyroid carcinoma. The thyroid antimicrosomal antibody and antiacetylcholine receptor antibody were positive. Her HLA serotype was A2, A11, A62, B60, CW3, CW4, DR4, DR9.We report here a case of polyglandular autoimmune syndrome, type III manifesting insulin-dependent diabetes mellitus, myasthenia gravis and Graves' disease associated with papillary thyroid carcinoma.
Close layer
Diabetes Mellitus in Association with Klinefelter Syndrome.
In Pyo Jun, Suck Hwan Lim, Won Hyep Bae, Seung Jun Kim, Youn Ho Lee, Sun Ho Kim, Jung Kyu Lim, Jin Duk Hur
J Korean Endocr Soc. 1994;9(1):46-49.   Published online November 6, 2019
  • 1,132 View
  • 23 Download
AbstractAbstract PDF
Klinefelter syndrome is the most common form of male hypogonadism. It is characterized by small, firm testis, gynecomastia, a variable degree of eunuchoidism, azoospermia, elevated gonadotropin level. Increased frequency of diabetes mellitus, breast cancer, empysema, chronic bronchitis, varicose vein, germ cell neoplasia occurs in Klinefelter syndrome. We report a 19 year-old male patient with diabetes mellitus in association with Klinefelter syndrome, which was confirmed by chromosome analysis. The patient is being treated with insulin for diabetes mellius and with testostrone replacement for Klinefelter syndrome.
Close layer
Original Articles
Endocrine Research
Omega-3 Polyunsaturated Fatty Acids May Attenuate Streptozotocin-Induced Pancreatic β-Cell Death via Autophagy Activation in Fat1 Transgenic Mice
Won-Min Hwang, Dong-Ho Bak, Dong Ho Kim, Ju Young Hong, Seung-Yun Han, Keun-Young Park, Kyu Lim, Dong-Mee Lim, Jae Gu Kang
Endocrinol Metab. 2015;30(4):569-575.   Published online December 31, 2015
DOI: https://doi.org/10.3803/EnM.2015.30.4.569
  • 4,123 View
  • 43 Download
  • 17 Web of Science
  • 19 Crossref
AbstractAbstract PDFPubReader   
Background

Inflammatory factors and β-cell dysfunction due to high-fat diets aggravate chronic diseases and their complications. However, omega-3 dietary fats have anti-inflammatory effects, and the involvement of autophagy in the etiology of diabetes has been reported. Therefore, we examined the protective effects of autophagy on diabetes using fat-1 transgenic mice with omega-3 self-synthesis capability.

Methods

Streptozotocin (STZ) administration induced β-cell dysfunction in mice; blood glucose levels and water consumption were subsequently measured. Using hematoxylin and eosin (H&E) and Masson's trichrome staining, we quantitatively assessed STZ-induced changes in the number, mass, and fibrosis of pancreatic islets in fat-1 and control mice. We identified the microtubule-associated protein 1A/1B light chain 3-immunoreactive puncta in β-cells and quantified p62 levels in the pancreas of fat-1 and control mice.

Results

STZ-induced diabetic phenotypes, including hyperglycemia and polydipsia, were attenuated in fat-1 mice. Histological determination using H&E and Masson's trichrome staining revealed the protective effects of the fat-1 expression on cell death and the scarring of pancreatic islets after STZ injection. In the β-cells of control mice, autophagy was abruptly activated after STZ treatment. Basal autophagy levels were elevated in fat-1 mice β-cells, and this persisted after STZ treatment. Together with autophagosome detection, these results revealed that n-3 polyunsaturated fatty acid (PUFA) enrichment might partly prevent the STZ-related pancreatic islet damage by upregulating the basal activity of autophagy and improving autophagic flux disturbance.

Conclusion

Fat-1 transgenic mice with a n-3 PUFA self-synthesis capability exert protective effects against STZ-induced β-cell death by activating autophagy in β-cells.

Citations

Citations to this article as recorded by  
  • Mitochondrial Dysfunction and Mitophagy in Type 2 Diabetes: Pathophysiology and Therapeutic Targets
    Nadezda Apostolova, Teresa Vezza, Jordi Muntane, Milagros Rocha, Víctor M. Víctor
    Antioxidants & Redox Signaling.2023; 39(4-6): 278.     CrossRef
  • β Cell and Autophagy: What Do We Know?
    Hamid-Reza Mohammadi-Motlagh, Mona Sadeghalvad, Niloofar Yavari, Rosita Primavera, Setareh Soltani, Shashank Chetty, Abantika Ganguly, Shobha Regmi, Tina Fløyel, Simranjeet Kaur, Aashiq H. Mirza, Avnesh S. Thakor, Flemming Pociot, Reza Yarani
    Biomolecules.2023; 13(4): 649.     CrossRef
  • The ameliorating effects of mesenchymal stem cells compared to α‐tocopherol on apoptosis and autophagy in streptozotocin‐induced diabetic rats: Implication of PI3K/Akt signaling pathway and entero‐insular axis
    Heba A. Mubarak, Manal M. Kamal, Yossra Mahmoud, Fatma S. Abd‐Elsamea, Eman Abdelbary, Marwa G. Gamea, Reham I. El‐Mahdy
    Journal of Cellular Biochemistry.2023; 124(11): 1705.     CrossRef
  • Nutraceuticals as Modulators of Autophagy: Relevance in Parkinson’s Disease
    Michał Rakowski, Szymon Porębski, Agnieszka Grzelak
    International Journal of Molecular Sciences.2022; 23(7): 3625.     CrossRef
  • High n-3 fatty acids counteract hyperglycemia-induced insulin resistance in fat-1 mice via pre-adipocyte NLRP3 inflammasome inhibition
    Qingyao Yu, Tiantian Wang, Feng Wang, Yong Yang, Canxia He, Wenge Yang, JinJie Zhang, Zuquan Zou
    Food & Function.2021; 12(1): 230.     CrossRef
  • Metabolic and Metabolomic Insights Regarding the Omega-3 PUFAs Intake in Type 1 Diabetes Mellitus
    Carmen Purdel, Anca Ungurianu, Denisa Margina
    Frontiers in Molecular Biosciences.2021;[Epub]     CrossRef
  • Effects of the linoleic acid/docosahexaenoic acid ratio and concentration inducing autophagy in Raw264.7 cells against Staphylococcus aureus
    Li-Ying Xu, Min Mu, Man-Li Wang, Jin-Cheng Liu, Yuan-Jie Zhou, Jing Wu, Bing-You Jiang, Ming-Gong Chen, Dong Hu, Xing-Rong Tao
    Journal of Clinical Biochemistry and Nutrition.2020; 67(2): 146.     CrossRef
  • Free fatty acid receptor 3 differentially contributes to β-cell compensation under high-fat diet and streptozotocin stress
    Medha Priyadarshini, Connor Cole, Gautham Oroskar, Anton E. Ludvik, Barton Wicksteed, Congcong He, Brian T. Layden
    American Journal of Physiology-Regulatory, Integrative and Comparative Physiology.2020; 318(4): R691.     CrossRef
  • Mitochondria and T2D: Role of Autophagy, ER Stress, and Inflammasome
    Milagros Rocha, Nadezda Apostolova, Ruben Diaz-Rua, Jordi Muntane, Victor M. Victor
    Trends in Endocrinology & Metabolism.2020; 31(10): 725.     CrossRef
  • Omega-3 Polyunsaturated Fatty Acids Prevent Toxoplasma gondii Infection by Inducing Autophagy via AMPK Activation
    Choi, Lee, Lee, Park, Lee, Shin, Cha, Lee, Lim, Yuk
    Nutrients.2019; 11(9): 2137.     CrossRef
  • Survivin regulated by autophagy mediates hyperglycemia-induced vascular endothelial cell dysfunction
    Yu-Xue Xu, Caoxin Huang, Minyi Liu, Ningning Chen, Wenting Chen, Chen Yang, Yan Zhao, Xuejun Li, Junguo Duan, Suhuan Liu, Shuyu Yang
    Experimental Cell Research.2018; 364(2): 152.     CrossRef
  • Autophagy in Metabolic Age-Related Human Diseases
    Manon Moulis, Cecile Vindis
    Cells.2018; 7(10): 149.     CrossRef
  • A comparison of the anti-diabetic potential of d-ribose-l-cysteine with insulin, and oral hypoglycaemic agents on pregnant rats
    Abraham A.A. Osinubi, Leke Jacob Medubi, Edidiong N. Akang, Lawal K. Sodiq, Titilola A. Samuel, Taiwo Kusemiju, James Osolu, Danladi Madu, Olufemi Fasanmade
    Toxicology Reports.2018; 5: 832.     CrossRef
  • β-Cell Autophagy in Diabetes Pathogenesis
    Michelle R Marasco, Amelia K Linnemann
    Endocrinology.2018; 159(5): 2127.     CrossRef
  • Endogenous synthesis of n-3 polyunsaturated fatty acids in fat-1 transgenic mice ameliorates streptozocin-induced diabetic nephropathy
    Yuan-Ming Zhang, Xiao-Hong Zhang, Pan Zhu, Rong-Hui Tan, Jin-Shun Zhao, Feng Wang, Jin-Jie Zhang, Wang Yan, Yang Xi, Jian-Bo Wan, Jing-Xuan Kang, Zu-Quan Zou, Shi-Zhong Bu
    Journal of Functional Foods.2018; 45: 427.     CrossRef
  • PHLPP: a putative cellular target during insulin resistance and type 2 diabetes
    Alpana Mathur, Vivek Kumar Pandey, Poonam Kakkar
    Journal of Endocrinology.2017; 233(3): R185.     CrossRef
  • Coenzyme Q10 ameliorates cerebral ischemia reperfusion injury in hyperglycemic rats
    Cui-Jie Lu, Yong-Zhen Guo, Yang Zhang, Lan Yang, Yue Chang, Jing-Wen Zhang, Li Jing, Jian-Zhong Zhang
    Pathology - Research and Practice.2017; 213(9): 1191.     CrossRef
  • Changes in pancreatic histology, insulin secretion and oxidative status in diabetic rats following treatment with Ficus deltoidea and vitexin
    Samsulrizal Nurdiana, Yong Meng Goh, Hafandi Ahmad, Sulaiman Md Dom, Nur Syimal’ain Azmi, Noor Syaffinaz Noor Mohamad Zin, Mahdi Ebrahimi
    BMC Complementary and Alternative Medicine.2017;[Epub]     CrossRef
  • Comparative analysis of the efficacy of omega-3 fatty acids for hypertriglyceridaemia management in Korea
    H.-S. Kim, H. Kim, Y. J. Jeong, S. J. Yang, S. J. Baik, H. Lee, S.-H. Lee, J. H. Cho, I.-Y. Choi, H. W. Yim, K.-H. Yoon
    Journal of Clinical Pharmacy and Therapeutics.2016; 41(5): 508.     CrossRef
Close layer
Determinants of the Brachial-Ankle Pulse Wave Velocity (baPWV) in Patients with Type 2 Diabetes Mellitus.
Seong Woo Lee, Kyung Won Yun, Yun Sik Yu, Hong Kyu Lim, Yung Pil Bae, Byung Do Lee, Bo Hyun Kim, Chang Won Lee
J Korean Endocr Soc. 2008;23(4):253-259.   Published online August 1, 2008
DOI: https://doi.org/10.3803/jkes.2008.23.4.253
  • 2,160 View
  • 22 Download
  • 4 Crossref
AbstractAbstract PDF
BACKGROUND
Pulse wave velocity (PWV) correlates with arterial distensibility and stiffness and is a useful method for evaluating the severity of systemic atherosclerosis in adults. Brachial-ankle PWV (baPWV) is affected by many different factors such as age, systolic blood pressure (SBP), sex, body mass index, waist to hip ratio, and HbA1c. We evaluated the determinants of baPWV in patients with type 2 diabetes mellitus. METHODS: The study included 803 type 2 diabetic patients over age 30 who had their ankle brachial pressure index (ABI) and baPWV measured at Busan St. Mary's Medical Center, Busan, Korea. Anthropometric parameters, blood pressure, pulse pressure, fasting plasma glucose, fasting insulin, HbA1c, lipid profile, high sensitivity C-reactive protein (hs-CRP), and microalbuminuria were checked concurrently. We also investigated tobacco and alcohol use by means of questionnaire. We then retrospectively analyzed the relationships between baPWV and various risk factors. RESULTS: Differences between men and women were measured using the independence sample probate. Pearson correlation analysis confirmed the factors affecting the baPWV as follows: SBP, diastolic blood pressure, pulse pressure, age, waist circumference, gender, and duration of diabetes mellitus were positively correlated, and height and weight were negatively correlated. On aged-adjusted partial correlation, HbA1c, SBP, diastolic blood pressure, and pulse pressure were correlated. By multiple linear regression analysis, SBP, age, HbA1c, and weight were independent predictors of baPWV. CONCLUSION: The baPWV is principally affected by SBP and age in patients with type 2 diabetes mellitus.

Citations

Citations to this article as recorded by  
  • High Brachial Ankle Pulse Wave Velocity as a Marker for Predicting Coronary Artery Stenosis in Patients with Type 2 Diabetes
    Bo Hyun Kim, Jae Sik Jang, Yong Seop Kwon, June Hyung Kim, In Joo Kim, Chang Won Lee
    Endocrinology and Metabolism.2018; 33(1): 88.     CrossRef
  • Relationships between Brachial-Ankle Pulse Wave Velocity and Peripheral Neuropathy in Type 2 Diabetes
    Byung Kil Ha, Bong Gun Kim, Dong Hyun Kim, Soon Il Lee, Soon Myung Jung, Ja Young Park, Chang Won Lee, Sang Soo Kim, Bo Hyun Kim, In Ju Kim
    Diabetes & Metabolism Journal.2012; 36(6): 443.     CrossRef
  • Relationships between Cardiac Autonomic Neuropathy and the Brachial-ankle Pulse Wave Velocity in Patients with Type 2 Diabetes
    Young Pil Bae, Byeong Do Yi, Bong-Gun Kim, Jong-Hwa Park, Yong Seop Kwon, Ja Young Park, Chang Won Lee, Bo Hyun Kim, Jae-Sik Jang
    Endocrinology and Metabolism.2011; 26(1): 44.     CrossRef
  • Type 2 Diabetes Mellitus and Arterial Stiffness
    Sung Hee Choi
    Journal of Korean Endocrine Society.2008; 23(4): 234.     CrossRef
Close layer
Transcriptional Regulation of the Estrogen Receptor alpha Gene by Testosterone in Cultures of Primary Rat Sertoli Cells.
Sang Kuk Yang, Kyung Ah Yoon, Eun Jin Yun, Kyoung Sub Song, Jong Seok Kim, Young Rae Kim, Jong Il Park, Seung Kiel Park, Byung Doo Hwang, Kyu Lim
J Korean Endocr Soc. 2006;21(2):106-115.   Published online April 1, 2006
DOI: https://doi.org/10.3803/jkes.2006.21.2.106
  • 1,654 View
  • 23 Download
AbstractAbstract PDF
BACKGROUND
We wanted to identify the presence of the estrogen receptor (ER) alpha in Sertoli cells and gain insight on the regulation of the ER alpha gene expression by testosterone in Sertoli cells. The transcriptional regulation of the ER alpha gene was investigated in primary Sertoli cell cultures by in situ hybridization and reverse transcription-polymerase chain reaction (RT-PCR). METHODS: Primary Sertoli cell culture was performed. The expression levels of ER alpha and ER beta mRNA in Sertoli cells were detected by Northern blot, RT-PCR, immunocytochemistry and in situ hybridization. RESULTS: The ovary, testis and epididymis showed a moderate to high expression of ER alpha while the prostate, ovary and LNCap cells showed the ER beta expression. ER alpha mRNA and protein were detected in the germ cells and Sertoli cells by in situ hybridization and immunocytochemistry. The level of ER alpha mRNA was gradually decreased in a time-dependent manner after testosterone treatment, and the changes of ER alpha mRNA were dependent on the concentration of testosterone. Androgen binding protein and testosterone-repressive prostate message-2 (TRPM-2) mRNA were reduced at 24 hour by estradiol, while the transferrin mRNA was not affected. ER alpha mRNA was strongly detectable in the testes of 7 days-old-rats, but it was gradually decreased from 14 to 21 days of age. The primary Sertoli cells also showed the same pattern. The ER alpha gene expression was also regulated by testosterone in the Sertoli cells prepared from the 14- and 21-day old rats. CONCLUSIONS: These results suggest that ER alpha is transcriptionally regulated by testosterone and it may play some role in the Sertoli cells.
Close layer
Mechanism of Castration-induced Apoptosis of Ventral Prostate in Rat.
Chung Park, Jong Il Park, Eun Jin Yun, Kyoung Sub Song, Jong Seok Kim, Young Rae Kim, Sang Do Lee, Seung Keil Park, Byung Doo Hwang, Kyu Lim
J Korean Endocr Soc. 2005;20(3):230-241.   Published online June 1, 2005
DOI: https://doi.org/10.3803/jkes.2005.20.3.230
  • 1,518 View
  • 20 Download
AbstractAbstract PDF
BACKGROUND
S: Castration-induced androgen deprivation triggers a sequence of events, which activates apoptotic cell death of the androgen-dependent epithelial cells within the rat ventral prostate. To investigate the mechanism of castration-dependent apoptosis in the rat ventral prostate, the regulation of apoptosis-related genes was been investigated. METHODS: Azaline B was subcutaneously injected into Sprague-Dawley rat. The Fas receptor (Fas), Fas ligand (FasL) and bcl-2 mRNA, as well as the protein levels were detected by RT-PCR and Western blot analyses. Azaline B-dependent apoptosis was determined using TUNEL and a DNA fragmentation assay. The transacting factor of the FasL promoter was identified by DNA footprinting and a DNA mobility shift assay. RESULTS: The rat prostate was regressed after castration, with and the involuted ventral prostate regenerated by testosterone pretreatment, but not by that with FSH. Apoptosis of the ventral prostate was detected, after castration, using toluidine blue staining, a TUNEL assay and an apoptotic DNA fragmentation assay. The levels of Fas, FasL mRNA and protein were increased after castration. In the DNase I footprinting assay, using the FasL promoter and a nuclear extract prepared from a control prostate, at least two sites were protected: the SP-1 binding site at -283 bp and the prostate-unidentified factor(P-UF) binding site at -247 bp. The SP-1 binding activity vanished in the nuclear extract prepared from castrated rats. In the DNA mobility shift assay, the SP-1 binding activity was slightly decreased after castration. Both the Bcl-2 mRNA and Bcl-2 protein were downregulated after castration. CONCLUSION: These results suggest that the Fas/FasL system and Bcl-2 may be important to castrationdependent apoptosis in the rat ventral prostate, with SP-1 related to the castration-dependent regulation of the FasL gene
Close layer
Review Article
Specialized Functions and Hormonal Regulation of Sertoli Cell.
Kyu Lim, Chung Park, Kyung Ah Yun, Eun Jin Yun, Jong Il Park, Seung Kiel Park, Byung Doo Hwang
J Korean Endocr Soc. 2003;18(2):120-136.   Published online April 1, 2003
  • 979 View
  • 16 Download
AbstractAbstract PDF
No abstract available.
Close layer
Case Report
Ensulin Autoimmune Syndrome in a Patient with Methimazole-Treated Graves' Disease: A Case report.
Joong Kyu Lim, Yong An Woo, Sung Jin Kang, Sung Sik Yoo, Kun Young Hong, Soon Ho Kim
J Korean Endocr Soc. 1998;13(4):612-616.   Published online January 1, 2001
  • 999 View
  • 22 Download
AbstractAbstract PDF
Insulin autoimmune syndrome (IAS) includes fasting or reactive hypoglycemia, hyperinsulinemia and the presence of insulin-binding antibodies in patients who have never been exposed to exogenous insulin. This report concems a 29-year-old male patient with Graves disease who had history of having taken methimazole for two months, without any consequence, 6 months previously. However, when methimazole was administered again for three weeks, the patient suffered hypoglycemia during the next fourth week. He denied history of diabetes mellitus (DM), of taking any oral hypoglycemic agent or of having received insulin injection. Laboratory data showed total serum insulin level > 300 pu/mL, C-peptide reactivity (CPR) 8.0ng/mL and insulin antibody 89%. After stopping methimazole, he was treated with radioiodine (131I). There was no episode of hypoglycemic attack during 8 months of follow-up.
Close layer
Original Articles
Transcriptional REpression of Vimentin Gene During All-TTrans Retinoic Acid-Induced Differentiation of HL-60 Cells.
Kyu Lim, Do Won Kwon, Seung Min Kim, Kyung Ah Yoon, Mi Young Son, Myoung Sun Lee, Jong Il Park, Wan Hee Yoon, Byung Doo Hwang
J Korean Endocr Soc. 1998;13(4):601-611.   Published online January 1, 2001
  • 1,011 View
  • 18 Download
AbstractAbstract PDF
BACKGROUND
Vimentin is the major intermediate-size filament in the cytoplasm of cells from mesenchymal origin. The HL-60 cell is a unique human leukemic cell line capable of terminal differentiation with several chemical inducers, and then the cell line becomes a fre#quently described model system for cell differentiation in vitro. Vimentin mRNA is reduced during all-trans retinoic acid (retinoic acid) -dependent differentication but increased by 12-0-tetradecanoylphorbol-13-acetate (TPA). In this paper, we have investigated on the mechanism of transcriptional repression of vimentin gene during retinoic acid-dependent differentication of HL-60 cell. METHODS: HL-60 cells were grown in RPMI 1640 medium supplemented with 10% heat-inactivated fetal bovine serum and antibiotics in a humidified 5% CO at 37C. Total RNA was prepared by a modification of the method of Karlinsey et al. Northern blot hybridization was performed by the method of Virca et al. EcoRI fragment of pVIM-GEM was used as probe for vimentin mRNA. DNA mobility shift assay was performed by the method of Lim et al. End labeled DNA probe (Upper strand, 5-CGCITGATGAGTCAGCCG-3) for AP-1 binding activity was mixed with nuclear extracts in a 20 pL reaction volume containing 300 mM KCI, 60 mM HEPES, pH 7.9, 25mM MgC1, 1mM EDTA, 1mM DTT, 60% glycerol, and 2 pg of poly[dI-dC]. RESULTS: The level of vimentin mRNA was decreased at 12 hours after retinoic acid treatment, and not detected at 48 hours. The level of vimentin mRNA was reduced in proportion to concentration of retinoic acid, Retinoic acid-reduced vimentin mRNA was no change in cells treated with cycloheximide. Retinoic acid-dependent decrease of vimentin mRNA was partially recovered by staurosporin pretreatment. In DNA mobility shift assay, AP-1 binding activity was reduced at 48 hr during retinoic acid-induced differentiation. CONCLUSION: These results suggest that the transcriptional repression of vimentin gene during retinoic acid-induced differentiation in HL-60 cells is correlated with reduction of DNA binding activity of AP-1.
Close layer
Thyrotropin Suppresses INF-r Mediated Gene Expression by Inhibiting Signal Transducer and Activation of Transcription 1(STAT1) Activity in FRTL-5 Cells.
Min Ho Song, Young Kun Kim, Heung Kyu Ro, Eun Shin Park, Soon Hee Yoo, Ho Kim, Kang Wook Lee, Hee Jung Han, Won Chan Joo, Jin Ho Won, Kyu Lim, Oh Yoo Kwon
J Korean Endocr Soc. 1998;13(4):536-553.   Published online January 1, 2001
  • 1,089 View
  • 18 Download
AbstractAbstract PDF
BACKGROUND
The proinflammatory cytokine, IFN-y has been shown to exert pleiotropic effects in a variety of pathophysiologic conditions in autoimmune thyroid disease. The thyrocyte response to IFN-y is mediated two distinct classes of proteins, Janus kinases(Jakl and Jak2) and Signal Transducers and Activation of Transcription(STATl). The activation of STAT 1 is involved in the regulation of many interferon stimulated genes, such as MHC class II, intercellular adhesion molecules-1(ICAM-1) and MHC class II transactivator(CIITA) after the binding to the GASgFN- pactivated site) of the gene promoters. Recently we found TSH/forskolin inhibits IFN-y stimulated maximal expression of ICAM-1 in FRTL-5 cell. IFN-y action is localized between -175 bp and -97 bp from the start of translation of ICAM-1 gene which contains regulatory elements known to be involved in IFN-y action in other eukaryotic cells, palindromic IFN-y activated site(GAS)(5-TTTCCGGGAAA-3) which could bind STAT1, STAT3, STAT5, STAT6. Furthermore, the addition of TSH and forskolin causes a decrease in ICAM-1 promoter activity and its action was localized in GAS. These findings suggested TSH/cAMP signaling pathways downregulate IFN-y activated Janus kinase-STAT signaling path. We wanted to explore the possible involvement of elevated cAMP in the negative regulation of IFN-y induced STAT1 activation in thyroid cells. METHOD: We made several 5-deletion constructs of rat ICAM-1 promoter and analyzed the promoter activities by measuring the luciferase activity after tranfection into FRTL-5 cells. The protein/DNA complex was measured by electrophoretic mobility shift analysis using labeled oligonucleotide. We checked the level of total and phosphorylated STATl protein by immunoblot analysis using specific antibodies. RESULTS: Stimulation of IFN-y in FRTL-5 cells resulted in rapid activation of STATl/DNA binding activity, which was apparent after several minute of stimulation, maintains its activity until 48 h. Incubation of cells with TSH result in suppression of IFN-p mediated STAT1/DNA binding activity throughout the time course of activation by IFN-y. Addition of TSH into 5H maintained FRTL-5 cells did not change the total amount of latent STAT1 amount and also not affect IFN-y mediated production of total STAT1 until 4 h. IFN-y(100 U/mL) rapidly induced phosphorylation of STAT1 within 30 min. and maintained its level without significant change until 48 hours. Cells treated with TSH dramatically lowered the level of IFN-y induced production and phosphorylation of STAT1 after 12 h, 24 h, 36 h, and 48 h but TSH had no effect on the level of phosphorylated STATl within 4 h after IFN-y stimulation. The proteasome inhibitor, MG132 and phosphatase inhibitor, sodium orthovanadate did not block the TSH or forskolin mediated downregulation of phosphorylated STAT1. CONCLUSION: These results indicate a regulatory mechanism which TSH signaling can modulate the prolonged activation of Jak/Stat by IFN-y. We identified one of mechanisms related to TSH mediated negative suppression of the ICAM-1 gene; TSH/cAMP signaling pathways downregulate the cytokine activated Janus kinase-STAT signaling path.
Close layer
Randomized Controlled Trial
Suppressive Therapy with Levothyroxine in Benignn Solitary Thyroid Nodule.
Sun Ho Kim, Jin Ho Choo, Ki Chang Oh, Hyoung Churl Cho, Jang Hyeon Cho, Joong Kyu Lim, Jin Duk Huh
J Korean Endocr Soc. 1997;12(1):45-52.   Published online January 1, 2001
  • 1,114 View
  • 21 Download
AbstractAbstract PDF
BACKGROUND
Clinically apparent thyroid nodule is a very common disease in adults. Patients are often treated with thyroxine in order to reduce the size of the nodule, but the efficacy of thyroxine-suppressive therapy with thyroxine remains uncertain. We investigated the efficacy of thyroxine-suppressive therapy and the hormonal characteristics during thyroxine therapy to find out whether such measurement could be used to determine the effectiveness of this therapy in patients with benign solitary thyroid nodule proved by aspiration biopsy. METHODS: In this study, 54 patients were randomly assigned to receive L-thyroxine (Group I, n=24) or placebo (GroupII, n=30) for 1 year. High resolution ultrasonography (10MHz) was used to measure the size of the nodules at six month intervals. Thyroid hormones and thyroglobulin assay and FNA (fine needle aspiration) was done at the same time. The dose of thyroxine was 200ug/day. Patients were followed at 6 month intervals. RESULTS: The results were as follows: 1) 13 (54.1%) out of 24 Group I patients after adequate TSH suppression had a statistically significant reduction of nodule size and before-to-after nodule volume ratios were significantly different between the Group I and Group II patients. 2) In the responders among Group I patients, the before-to-after therapy ratio of the nodule volume was not related to the pretreatment nodule size, thyroid hormones and thyroglobulin levels. CONCLUSION: Thus we concluded that an adequate suppressive dose of L-thyroxine significantly altered the volume of the benign solitary thyroid nodules 12 months later.
Close layer
Original Articles
A case of adrenocortical carcinoma accompanied by secondaryaldosteronism.
Yeon Jong Kim, Ho dong Kim, Hyeong Shin Yoon, Jin Hyung Jang, Hueon Kim, Jung Kyu Lim, Chin Deuk Huh, Jang Shin Sohn
J Korean Endocr Soc. 1992;7(2):160-164.   Published online January 1, 2001
  • 1,019 View
  • 16 Download
AbstractAbstract PDF
No abstract available.
Close layer
Diagnostic value of fine needle aspiration of thyroid nodules.
Sang Seok Lee, Sun Ho Kim, Jong Kwan Kim, Phil Seok Oh, Jung Kyu Lim, Chin Duk Huh, Jang Shin Sohn
J Korean Endocr Soc. 1991;6(2):150-156.   Published online January 1, 2001
  • 973 View
  • 17 Download
AbstractAbstract PDF
No abstract available.
Close layer

Endocrinol Metab : Endocrinology and Metabolism