- A Case of Hashimotos Thyroiditis with Anti-Triiodothyronine Autoantibody.
-
Yun Ey Chung, Jeong Hee Han, Seong Jin Lee, Won Ki Min, Ki Young Park, Kun Ku Park, Dae Hyunk Moon, Il Min Ahn
-
J Korean Endocr Soc. 2001;16(2):245-251. Published online April 1, 2001
-
-
-
 Abstract
 PDF
- Autoantibodies against thyroid hormones can be detected in the sera of patients with both thyroidal and non-thyroidal disorders. These antibodies interfere with the radioimmunoassay of serum total and free thyroid hormone concentrations, resulting in a discrepancy between the measured hormone levels and clinical features. This can in turn lead to an erroneous diagnosis and patients may receive unnecessary treatment from physicians who are unaware of the presence of the autoantibodies. We experienced a woman having Hashimotos' thyroiditis with a spurious elevation of total T3 and free T3 values according to one-step analog-tracer radioimmunoassay who was had been treated as Graves' disease in past. Through the use of a polyethylene glycol precipitation method, she was subsequently revealed to have anti-triiodothyronine autoantibodies. We report this case with a review of related literature.
- Clinical Significance of Human Sodium Iodide Symporter mRNA Expressions in Primary and Metastatic Papillary Thyroid Carcinoma.
-
Seong Jin Lee, Hyun Joo Park, Eun Ju Lee, Ha Young Kim, Jin Kyu Koh, Ki Young Park, Sung Bae Kim, Gyung Yup Gong, Suk Joon Hong, Il Min Ahn, Sang Hee Kim
-
J Korean Endocr Soc. 1999;14(3):514-519. Published online January 1, 2001
-
-
-
Abstract
PDF
- BACKGROUND
The iodide transport into thyroid cells is an essential step in the biosynthesis of thyroid hormones. The sodium iodide symporter (NIS) which is responsible for iodide transport was cloned recently and identified as a plasma membrane glycoprotein. Recent report suggested the absence of human NIS (hNIS) mRNA expression of papillary carcinoma in thyroid indicates absence of response on radioiodine therapy for distant metastasis. To understand the change of hNIS expression at the stage of metastasis in papillary thyroid carcinomas, we evaluated the expression levels of hNIS mRNA in primary and lymph node metastatic papillary carcinoma tissues. METHODS: Seven pairs of primary and lymph node metastatic tissues were included in this study. The level of hNIS mRNA in lymph node metastatic tissues and primary tissues were evaluated by reverse transcriptase-polymerase chain reaction (RT-PCR). The level of GAPDH mRNA was used as internal control. RESULTS: Two among 6 lymph node metastatic tissues did not show hNIS mRNA even with significant hNIS expressions in papillary carcinoma tissues in thyroid. The levels of hNIS expression of remaining 4 lymph node metastatic tissues were lower than those of corresponding primary tissues. Interestingly, one case showed no hNIS expression in primary tissue, but significant hNIS expression in lymph node metastatic tissue. There was no correlation in hNIS mRNA expression between primary and lymph node metastatic tissues. CONCLUSION: No correlation was found in hNIS mRNA expression between primary and lymph node metastatic tissues, suggesting the measurements of hNIS mRNA level in primary tissues may not predict therapeutic response to radioactive iodine.
- Allelotyping and Comparative Genomin Hybridization Studies in Papillary Thyroid Carcinomas and Follicular Adenomas.
-
Il Min Ahn, Eun Sook Kim, Hyun Soo Park, Ki Young Park, Seok Jun Hong, Kyung Yub Gong, Jin Yub Kim, Sung Bae Kim, Sang Hee Kim, Sung Jin Lee, Jung Hee Han, Kwan Ja Jee
-
J Korean Endocr Soc. 1999;14(2):314-322. Published online January 1, 2001
-
-
-
Abstract
PDF
- BACKGROUND
In our previous study, the prevalence of the known causes of thyroid tumorigenesis was relatively rare in Korean population, suggesting genetic and environmental differences exist. Screening of genetic alteration in papillary thyroid carcinoma(PTC) and follicular adenoma(FA) in whole genomic scale was needed prior to search on individual genes of possible causes. METHODS: Ten cases of PTC without ret/PTC-I, -2, -3 rearrangement and 5 cases of follicular adenoma were included in the study of microsatellite marker allelotyping. Sixty two microsatellite markers available, were chosen to cover the known sites of loss of heterozygosity(LOH) involved in thyroid tumors, tumor suppressor genes and terminal portion of each chromosomes. PCR was performed on tumor DNA and leukocytes DNA from each patient with MDE gel electrophoresis to detect LOH. Same specitnens as above, 3 case of normal thyroid tissues and NPA, ARO cell lines were included in the study of comparative genomic hybridization(CGH). Tumor and control DNAs were hybridized to metaphase chromosome with differential stainings with fluorescein and rhoda-mine-dUTP. Obtained results were analyzed by multicolor fluorescence computer assisted image analyzer. RESULTS: In allelotyping, LOH were detected in 5 cases of PTC, 2 cases on D10S1435, 1 case each on D2S1780, DSS1099, D11S1986, D16S539, 1 case of PTC revealed LOH on DSS1099, D11S1986. In FA, LOH were detected in 3 cases on D1S534, D1S226, Dl 1S907, D22S683, DXS9807. In CGH, Xp addition was noticed in 1 case of PTC, 12q and 10p addition was noticed in 1 case each, 16q deletion and 17q addition in 1 case of FA. CONCLUSION: No hot spot of LOH was noticed in microsatellite marker allelotyping, neither of common chromosomal change in CGH study suggesting unbalanced translocation or gene amplification more than 5-10 Mb may be involved in the genetic alteration of PTC and FA.
- Prevalence of Gsa, ras, p53 Mutations and ret/PTC Rearrangement in Differentiated Thyroid Tumors of Korean Population.
-
Il Min Ahn, Young Il Kim, Hyun Soo Park, Ki Young Park, Seok Jun Hong, Eun Joo Lee, Kyung Yub Gong
-
J Korean Endocr Soc. 1998;13(2):189-197. Published online January 1, 2001
-
-
-
Abstract
PDF
- BACKGROUND
In thyroid tumor, ras, Gsa, p53 mutation and ret/FfC rearrangement have been reported with variable prevalences in different geographic regions. We studied the prevalences of these mutations and reammgement in thyroid tumors of Korean population. METHODS: Eleven cases of adenamatous goiter, 8 cases of follicular adenoma, 5 cases of foliicular carcinoma, 37 cases of papillary carcinoma were included in this study. To find mutations and rearrangement, RT-PCR, SSCP, and/or direct sequencing, after subcloning if necessary, were used. RESULTS: We could not find any rearrangment for ret/PTC-l, -2, -3 and mutations of Gsa. For ras oncogene, K and H-ras mutations were not found, but N-ras mutations, point mutation of CAA to CGA in codon 61, were detected in 1 follicular adenoma(12.5%, 1/8) and 1 follicular carcinoma(33%, 1/3). And p53 mutations were detected only in 1 case of papillary carcinoma (3%, 1/31: exon 8, codon 266 GGA-GAA). CONCLUSION: ret/PTC rearrangement, Gsa, ras and p53 mutations are relatively rare in differentiated thyroid neoplasms of Korean population, which may reflect the genetic and environmental differences from those countries with high prevalence.
- Expression of Human Sodium Iodide Symporter mRNA in Papillary Thyroid Carcinoma.
-
Hong Kyu Kim, Il Min Ahn, Young Il Kim, Eun Sook Kim, Hyun Soo Park, Ki Young Park, Seok Jun Hong
-
J Korean Endocr Soc. 1998;13(2):181-188. Published online January 1, 2001
-
-
-
Abstract
PDF
- BACKGROUND
The sodium iodide symporter(NIS) is a plasma membrane protein which is respoasibIe for iodide transport into thyroid cell. The cDNA sequence of NIS has recently been cloned from rat and human. Intrinsic ability and its differences in iodide accumulation have been exploited as a useful tool for diagnosis and therapy of thyroid diseases. It is also known that some differentiated thyroid cancers do not take up radioactive iodine at therapeutic dose. METHODS: To understand the expression and regulation of NIS in thyroid tumars, we measured the expressons of human NIS(hNIS), TSH-receptor(R), and thyroglohulin(Tg) mRNAs from papillary thyroid carcinoma(PTC) tissues by reverse transcriptase-polymerase chain reaction (RT-PCR) and RNase protection assay(RPA). RESULT: By RT-PCR analysis, 87% of PTC expressed hNIS mRNA, but the degree of expression were variable. Interestingly, 32% of PTC showed significant level of hNIS expression even though pre-operative technetium thyroid scan of all thyroid tumors were cold but the level was lower than normal control tissues. All of PTC showed the expressions of Tg and TSH-R mRNAs and there was a correlation between hNIS mRNA and TSH-R mRNA(Rsq 0.35, p=0.01). By RPA, the expression of hNIS and TSH-R in normal control tissue were detected with 20microgram and 40microgram of total RNA respectively, but the higher concentrations(> or =60microgram for hNIS and > or =40microgram for TSH-R) were required to detect in PTC, showing that tbe expression of hNIS in FTC was lower than TSH-R expression. CONCLUSION: PTC tends to lose hNIS mRNA expression earlier than TSH-R mRNA and the measurement of hNIS mRNA in PTC may be useful as an indicator of the therapeutic response to radioactive iodine.
|
KES
