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  1. Article ; Online: A Case of 17α-hydroxylase/17,20-lyase Deficiency Diagnosed at 45 Years of Age with Hyperaldosteronism.

    Ikeya, Akira / Yamashita, Miho / Kakizawa, Keisuke / Kawauchi, Yuto / Matsushita, Akio / Fujisawa, Yasuko / Ogata, Tsutomu / Sasaki, Shigekazu

    Internal medicine (Tokyo, Japan)

    2024  

    Abstract: 17α-hydroxylase deficiency is a type of congenital adrenocortical hyperplasia that is typically diagnosed in childhood or adolescence. It manifests as hypertension with gonadal dysfunction as the primary symptom. We herein report 17α-hydroxylase/17,20- ... ...

    Abstract 17α-hydroxylase deficiency is a type of congenital adrenocortical hyperplasia that is typically diagnosed in childhood or adolescence. It manifests as hypertension with gonadal dysfunction as the primary symptom. We herein report 17α-hydroxylase/17,20-lyase deficiency (17OHD) diagnosed at the age of 45 years. The patient presented with hypertension, irregular menstruation, and hyperaldosteronism. The clinical manifestations of 17OHD vary based on the specific variant pattern of CYP17A1. In this case, the variant was c.157_159 TCC del p. Phe53del, which has been frequently reported in Japan. The enzymatic deficiency due to this variant is partial, leading to a delay in making a correct diagnosis.
    Language English
    Publishing date 2024-04-09
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 32371-8
    ISSN 1349-7235 ; 0021-5120 ; 0918-2918
    ISSN (online) 1349-7235
    ISSN 0021-5120 ; 0918-2918
    DOI 10.2169/internalmedicine.3084-23
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Falsely elevated thyroid hormone levels associated with fibrin interference in patients receiving oral anticoagulant therapy.

    Tokumaru, Mitsuaki / Ohba, Kenji / Kashiwabara, Yumiko / Takase, Hiroyuki / Hayashi, Chiga / Iwaki, Takayuki / Suzuki, Yasuhide / Matsushita, Akio / Sasaki, Shigekazu / Suda, Takafumi / Maekawa, Masato

    Annals of clinical biochemistry

    2023  Volume 60, Issue 4, Page(s) 249–258

    Abstract: Objective: Unique clinical courses were observed in two asymptomatic patients receiving warfarin who referred to our hospital because of suspected central hyperthyroidism. We eventually diagnosed these patients with falsely elevated thyroid hormone ... ...

    Abstract Objective: Unique clinical courses were observed in two asymptomatic patients receiving warfarin who referred to our hospital because of suspected central hyperthyroidism. We eventually diagnosed these patients with falsely elevated thyroid hormone levels caused by macroscopically invisible fibrin. Although false results caused by fibrin interference in vitro have been identified in various immunoassays, especially in blood samples from patients receiving anticoagulant therapy, no studies on thyroid function testing have been reported. The experience in evaluating these cases prompted us to investigate the independent influence of oral anticoagulants via putative fibrin interference on thyroid function testing.
    Methods: We retrospectively reviewed known contributing factors that affect thyroid function testing including age, gender, medication history, body mass index, estimated glomerular filtration rate, smoking status, alcohol consumption, and the seasons of hospital visits from participants who presented the Department of Health Checkup between April 2010 and December 2020.
    Results: A propensity-matched analysis revealed that the median serum free thyroxine levels under oral anticoagulant were significantly higher (17.9 pmol/L, n = 60) than those without anticoagulants (16.0 pmol/L, n = 60;
    Conclusions: We report two patients receiving warfarin with falsely elevated thyroid hormone levels caused by fibrin interference resembling central hyperthyroidism for the first time. Our retrospective study suggests that the medication status of oral anticoagulants should be considered when evaluating thyroid function tests.
    MeSH term(s) Humans ; Retrospective Studies ; Thyroxine ; Warfarin/therapeutic use ; Thyrotropin ; Thyroid Hormones ; Hyperthyroidism/diagnosis ; Hyperthyroidism/drug therapy ; Thyroid Function Tests ; Anticoagulants/therapeutic use
    Chemical Substances Thyroxine (Q51BO43MG4) ; Warfarin (5Q7ZVV76EI) ; Thyrotropin (9002-71-5) ; Thyroid Hormones ; Anticoagulants
    Language English
    Publishing date 2023-03-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 390309-6
    ISSN 1758-1001 ; 0004-5632
    ISSN (online) 1758-1001
    ISSN 0004-5632
    DOI 10.1177/00045632231159280
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Second-Generation AUTACs for Targeted Autophagic Degradation.

    Takahashi, Daiki / Ora, Taiichi / Sasaki, Shigekazu / Ishii, Naoki / Tanaka, Toshio / Matsuda, Takumi / Ikeda, Mutsuki / Moriyama, Jun / Cho, Nobuo / Nara, Hiroshi / Maezaki, Hironobu / Kamaura, Masahiro / Shimokawa, Kenichiro / Arimoto, Hirokazu

    Journal of medicinal chemistry

    2023  Volume 66, Issue 17, Page(s) 12342–12372

    Abstract: Targeted protein degradation via the ubiquitin-proteasome system has emerged as one of the most promising drug discovery modalities. Autophagy, another intracellular degradation system, can target a wide range of nonproteinous substrates as well as ... ...

    Abstract Targeted protein degradation via the ubiquitin-proteasome system has emerged as one of the most promising drug discovery modalities. Autophagy, another intracellular degradation system, can target a wide range of nonproteinous substrates as well as proteins, but its application to targeted degradation is still in its infancy. Our previous work revealed a relationship between guanine modification of cysteine residues on intracellular proteins and selective autophagy, resulting in the first autophagy-based degraders, autophagy-targeted chimeras (AUTACs). Based on the research background, all the reported AUTACs compounds contain cysteine as a substructure. Here, we examine the importance of this substructure by conducting SAR studies and report significant improvements in the degrader's activity by replacing cysteine with other moieties. Several derivatives showed sub-μM range degrading activity, demonstrating the increased practical value of AUTACs.
    MeSH term(s) Cysteine ; Autophagy ; Cytoplasm ; Drug Discovery ; Guanine
    Chemical Substances Cysteine (K848JZ4886) ; Guanine (5Z93L87A1R)
    Language English
    Publishing date 2023-08-17
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 218133-2
    ISSN 1520-4804 ; 0022-2623
    ISSN (online) 1520-4804
    ISSN 0022-2623
    DOI 10.1021/acs.jmedchem.3c00861
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Retroperitoneal Paraganglioma With Asymptomatic Follicular Lymphoma: A Case Report.

    Kakizawa, Keisuke / Yamashita, Miho / Nakashima, Mitsuko / Kawauchi, Yuto / Ikeya, Akira / Matsushita, Akio / Sasaki, Shigekazu / Oki, Yutaka

    Journal of the Endocrine Society

    2021  Volume 5, Issue 12, Page(s) bvab171

    Abstract: Paraganglioma (PGL) is a rare tumor originating from extra-adrenal paraganglionic chromaffin tissues, and most sympathetic PGLs have excessive catecholamine secretion. However, nonfunctional PGLs are sometimes found. Although malignant PGL is defined by ... ...

    Abstract Paraganglioma (PGL) is a rare tumor originating from extra-adrenal paraganglionic chromaffin tissues, and most sympathetic PGLs have excessive catecholamine secretion. However, nonfunctional PGLs are sometimes found. Although malignant PGL is defined by metastasis to nonchromaffin tissues, it is difficult to predict malignancies due to the lack of reliable markers of potential malignancies. We report the case of a 69-year-old Japanese woman with an incidental retroperitoneal tumor and multiple enlarged mesenteric lymph nodes simultaneously. The patient had no subjective symptoms and there were no laboratory findings suggesting catecholamine hypersecretion. Both the retroperitoneal tumor and the enlarged mesenteric lymph nodes showed high accumulation of fluorodeoxyglucose (FDG), whereas metaiodobenzylguanidine (MIBG) was accumulated only at the retroperitoneal tumor. Although a retroperitoneal tumor was diagnosed as nonfunctional PGL by examination including MIBG scintigraphy, the cause of enlarged mesenteric lymph nodes could not be diagnosed by imaging and biochemical tests. As a result of retroperitoneal tumor resection and mesenteric lymph nodes sampling, histopathological examination revealed that a retroperitoneal tumor was PGL and enlarged mesenteric lymph nodes were follicular lymphoma. To reveal an underlying genetic factor, we performed whole exome sequencing of genomic DNA, and we identified 2 possible candidate variants in
    Language English
    Publishing date 2021-11-14
    Publishing country United States
    Document type Case Reports
    ISSN 2472-1972
    ISSN (online) 2472-1972
    DOI 10.1210/jendso/bvab171
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Impairment of the Hypothalamus-Pituitary-Thyroid Axis Caused by Naturally Occurring

    Sakai, Yuki / Ohba, Kenji / Sasaki, Shigekazu / Matsushita, Akio / Nakamura, Hiroko Misawa / Kuroda, Go / Tsuriya, Daisuke / Yamashita, Miho / Suda, Takafumi

    International journal of molecular sciences

    2021  Volume 22, Issue 18

    Abstract: The transcription factor GATA2 regulates gene expression in several cells and tissues, including hematopoietic tissues and the central nervous system. Recent studies revealed that loss-of-function mutations ... ...

    Abstract The transcription factor GATA2 regulates gene expression in several cells and tissues, including hematopoietic tissues and the central nervous system. Recent studies revealed that loss-of-function mutations in
    MeSH term(s) Blotting, Western ; GATA2 Transcription Factor/genetics ; Haploinsufficiency/genetics ; Haploinsufficiency/physiology ; Humans ; Hypothalamus/metabolism ; Hypothyroidism/genetics ; Mutation/genetics ; Pituitary Gland/metabolism ; Promoter Regions, Genetic/genetics ; Thyroid Gland/metabolism ; Thyrotropin, beta Subunit/genetics ; Thyrotropin, beta Subunit/metabolism ; Transcriptional Activation/genetics ; Transcriptional Activation/physiology
    Chemical Substances GATA2 Transcription Factor ; GATA2 protein, human ; Thyrotropin, beta Subunit
    Language English
    Publishing date 2021-09-16
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms221810015
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Clinical outcomes of 34 patients with resistance to thyroid hormone beta: a twenty-year experience in Japan.

    Ohba, Kenji / Sasaki, Shigekazu / Misawa Nakamura, Hiroko / Matsushita, Akio / Kuroda, Go / Sakai, Yuki / Nakamura, Hirotoshi

    Endocrine journal

    2021  Volume 69, Issue 2, Page(s) 179–188

    Abstract: Resistance to thyroid hormone beta (RTHβ) caused by germline mutations in genes encoding thyroid hormone receptor beta (TRβ) is a rare disorder. Little information is available regarding the clinical experience of this syndrome in Japan. We ... ...

    Abstract Resistance to thyroid hormone beta (RTHβ) caused by germline mutations in genes encoding thyroid hormone receptor beta (TRβ) is a rare disorder. Little information is available regarding the clinical experience of this syndrome in Japan. We retrospectively reviewed the records of 34 patients with RTHβ (21 adult females and 13 adult males) with positive TRβ mutations identified at our division between 2000 and 2020. Of the 24 patients with available clinical history, 10 (41.7%) received inappropriate treatments such as antithyroid drugs, thyroidectomy, or radioactive iodine. Diagnostic delay and inappropriate management of RTHβ are still present in Japan. Every patient except one demonstrated thyroid hormone profiles indicative of syndrome of inappropriate secretion of thyrotropin (SITSH), characterized by a hormonal profile of hyperthyroxinemia with a non-suppressed TSH concentration. Since the most common forms of hyperthyroidism including Graves' disease feature elevated thyroid hormone levels with suppressed TSH concentrations, early diagnosis of SITSH is critical for preventing inappropriate management. One patient positive for anti-thyroglobulin antibody (Tg-Ab) and anti-thyroperoxidase antibody (TPO-Ab) showed remarkably elevated TSH (>200 μIU/mL) despite thyroid hormone concentrations within the reference ranges. At least one thyroid autoantibody (Tg-Ab, TPO-Ab, or thyrotropin receptor antibodies) was identified in 37.9% (11/29) of the patients tested. One patient developed overt Graves' disease nine years after RTHβ diagnosis. These findings suggest that RTHβ is frequently comorbid with additional autoimmune thyroid disorders. Further research is required to identify the most appropriate treatments for RTHβ patients who develop a second thyroid disorder.
    MeSH term(s) Adult ; Delayed Diagnosis ; Female ; Humans ; Iodine Radioisotopes ; Japan/epidemiology ; Male ; Retrospective Studies ; Thyroid Hormones ; Thyroid Neoplasms ; Thyrotropin
    Chemical Substances Iodine Radioisotopes ; Thyroid Hormones ; Thyrotropin (9002-71-5)
    Language English
    Publishing date 2021-09-22
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1151918-6
    ISSN 1348-4540 ; 0918-8959
    ISSN (online) 1348-4540
    ISSN 0918-8959
    DOI 10.1507/endocrj.EJ21-0390
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: CCNB2 and AURKA overexpression may cause atypical mitosis in Japanese cortisol-producing adrenocortical carcinoma with TP53 somatic variant.

    Ikeya, Akira / Nakashima, Mitsuko / Yamashita, Miho / Kakizawa, Keisuke / Okawa, Yuta / Saitsu, Hirotomo / Sasaki, Shigekazu / Sasano, Hironobu / Suda, Takafumi / Oki, Yutaka

    PloS one

    2020  Volume 15, Issue 4, Page(s) e0231665

    Abstract: Background: Many genomic analyses of cortisol-producing adrenocortical carcinoma (ACC) have been reported, but very few have come from East Asia. The first objective of this study is to verify the genetic difference with the previous reports by ... ...

    Abstract Background: Many genomic analyses of cortisol-producing adrenocortical carcinoma (ACC) have been reported, but very few have come from East Asia. The first objective of this study is to verify the genetic difference with the previous reports by analyzing targeted deep sequencing of 7 Japanese ACC cases using next-generation sequencing (NGS). The second objective is to compare the somatic variant findings identified by NGS analysis with clinical and pathological findings, aiming to acquire new knowledge about the factors that contribute to the poor prognosis of ACC and to find new targets for the treatment of ACC.
    Method: DNA was extracted from ACC tissue of seven patients and two reference blood samples. Targeted deep sequencing was performed using the MiSeq system for 12 genes, and the obtained results were analyzed using MuTect2. The hypothesis was obtained by integrating the somatic variant findings with clinical and pathological data, and it was further verified using The Cancer Genome Atlas (TCGA) dataset for ACC.
    Results: Six possible pathogenic and one uncertain significance somatic variants including a novel PRKAR1A (NM_002734.4):c.545C>A (p.T182K) variant were found in five of seven cases. By integrating these data with pathological findings, we hypothesized that cases with TP53 variants were more likely to show atypical mitotic figures. Using TCGA dataset, we found that atypical mitotic figures were associated with TP53 somatic variant, and mRNA expression of CCNB2 and AURKA was significantly high in TP53 mutated cases and atypical mitotic figure cases.
    Conclusion: We believe this is the first report that discusses the relationship between atypical mitotic figures and TP53 somatic variant in ACC. We presumed that overexpression of CCNB2 and AURKA mRNA may cause atypical mitosis in TP53 somatic mutated cases. Because AURKA is highly expressed in atypical mitotic cases, it may be an appropriate indicator for AURKA inhibitors.
    MeSH term(s) Adrenal Cortex Neoplasms/genetics ; Adrenal Cortex Neoplasms/pathology ; Adrenocortical Carcinoma/genetics ; Adrenocortical Carcinoma/pathology ; Adult ; Aurora Kinase A/genetics ; Aurora Kinase A/metabolism ; Cyclin B2/genetics ; Cyclin B2/metabolism ; Female ; Humans ; Male ; Middle Aged ; Mitosis ; Mutation, Missense ; RNA, Messenger/genetics ; RNA, Messenger/metabolism ; Tumor Suppressor Protein p53/genetics ; Up-Regulation
    Chemical Substances CCNB2 protein, human ; Cyclin B2 ; RNA, Messenger ; TP53 protein, human ; Tumor Suppressor Protein p53 ; AURKA protein, human (EC 2.7.11.1) ; Aurora Kinase A (EC 2.7.11.1)
    Language English
    Publishing date 2020-04-14
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0231665
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Hyperfunctioning Papillary Thyroid Carcinoma with a

    Shinkai, Shinsuke / Ohba, Kenji / Kakudo, Kennichi / Iwaki, Takayuki / Mimura, Yoshihiro / Matsushita, Akio / Kuroda, Go / Sakai, Yuki / Nishino, Nobuhiko / Umemura, Kazuo / Suda, Takafumi / Sasaki, Shigekazu

    European thyroid journal

    2021  Volume 10, Issue 3, Page(s) 262–267

    Abstract: Introduction: Hyperfunctioning papillary thyroid carcinoma (PTC) is rare and consequently, little information on its molecular etiology is available. Although : Case presentation: Ultrasonography detected a 26-mm nodule in the right lobe of the ... ...

    Abstract Introduction: Hyperfunctioning papillary thyroid carcinoma (PTC) is rare and consequently, little information on its molecular etiology is available. Although
    Case presentation: Ultrasonography detected a 26-mm nodule in the right lobe of the thyroid gland of a 48-year-old man. Thyroid function tests indicated that he was hyperthyroid with a TSH level of 0.01 mIU/L (reference range: 0.05-5.00) and a free thyroxine level of 23.2 pmol/L (reference range: 11.6-21.9). TSHR autoantibodies were <0.8 IU/L (reference value: <2.0 IU/L). The
    Discussion and conclusions: We report a case of hyperfunctioning PTC with a
    Language English
    Publishing date 2021-03-05
    Publishing country England
    Document type Case Reports
    ZDB-ID 2659767-6
    ISSN 2235-0802 ; 2235-0640
    ISSN (online) 2235-0802
    ISSN 2235-0640
    DOI 10.1159/000513552
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  9. Article ; Online: G-protein-coupled receptor 40 agonist GW9508 potentiates glucose-stimulated insulin secretion through activation of protein kinase Cα and ε in INS-1 cells.

    Hashimoto, Takuya / Mogami, Hideo / Tsuriya, Daisuke / Morita, Hiroshi / Sasaki, Shigekazu / Kumada, Tatsuro / Suzuki, Yuko / Urano, Tetsumei / Oki, Yutaka / Suda, Takafumi

    PloS one

    2019  Volume 14, Issue 9, Page(s) e0222179

    Abstract: Objective: The mechanism by which G-protein-coupled receptor 40 (GPR40) signaling amplifies glucose-stimulated insulin secretion through activation of protein kinase C (PKC) is unknown. We examined whether a GPR40 agonist, GW9508, could stimulate ... ...

    Abstract Objective: The mechanism by which G-protein-coupled receptor 40 (GPR40) signaling amplifies glucose-stimulated insulin secretion through activation of protein kinase C (PKC) is unknown. We examined whether a GPR40 agonist, GW9508, could stimulate conventional and novel isoforms of PKC at two glucose concentrations (3 mM and 20 mM) in INS-1D cells.
    Methods: Using epifluorescence microscopy, we monitored relative changes in the cytosolic fluorescence intensity of Fura2 as a marker of change in intracellular Ca2+ ([Ca2+]i) and relative increases in green fluorescent protein (GFP)-tagged myristoylated alanine-rich C kinase substrate (MARCKS-GFP) as a marker of PKC activation in response to GW9508 at 3 mM and 20 mM glucose. To assess the activation of the two PKC isoforms, relative increases in membrane fluorescence intensity of PKCα-GFP and PKCε-GFP were measured by total internal reflection fluorescence microscopy. Specific inhibitors of each PKC isotype were constructed and synthesized as peptide fusions with the third α-helix of the homeodomain of Antennapedia.
    Results: At 3 mM glucose, GW9508 induced sustained MARCKS-GFP translocation to the cytosol, irrespective of changes in [Ca2+]i. At 20 mM glucose, GW9508 induced sustained MARCKS-GFP translocation but also transient translocation that followed sharp increases in [Ca2+]i. Although PKCα translocation was rarely observed, PKCε translocation to the plasma membrane was sustained by GW9508 at 3 mM glucose. At 20 mM glucose, GW9508 induced transient translocation of PKCα and sustained translocation as well as transient translocation of PKCε. While the inhibitors (75 μM) of each PKC isotype reduced GW9508-potentiated, glucose-stimulated insulin secretion in INS-1D cells, the PKCε inhibitor had a more potent effect.
    Conclusion: GW9508 activated PKCε but not PKCα at a substimulatory concentration of glucose. Both PKC isotypes were activated at a stimulatory concentration of glucose and contributed to glucose-stimulated insulin secretion in insulin-producing cells.
    MeSH term(s) Animals ; Calcium/metabolism ; Cell Line, Tumor ; Cell Membrane/drug effects ; Cell Membrane/metabolism ; Cytosol/drug effects ; Cytosol/metabolism ; Dose-Response Relationship, Drug ; Enzyme Activation/drug effects ; Glucose/pharmacology ; Insulin Secretion/drug effects ; Methylamines/pharmacology ; Myristoylated Alanine-Rich C Kinase Substrate/metabolism ; Propionates/pharmacology ; Protein Kinase C-alpha/metabolism ; Protein Kinase C-epsilon/metabolism ; Protein Transport/drug effects ; Rats ; Receptors, G-Protein-Coupled/agonists ; Signal Transduction/drug effects
    Chemical Substances G-protein-coupled receptor 40, rat ; GW9508 ; Methylamines ; Propionates ; Receptors, G-Protein-Coupled ; Myristoylated Alanine-Rich C Kinase Substrate (125267-21-2) ; Protein Kinase C-alpha (EC 2.7.11.13) ; Protein Kinase C-epsilon (EC 2.7.11.13) ; Glucose (IY9XDZ35W2) ; Calcium (SY7Q814VUP)
    Language English
    Publishing date 2019-09-09
    Publishing country United States
    Document type Journal Article
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0222179
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  10. Article ; Online: Abnormal thyroid hormone response to TRH in a case of macro-TSH and the cut-off value for screening cases of inappropriate TSH elevation.

    Ohba, Kenji / Maekawa, Masato / Iwahara, Kunihiro / Suzuki, Yasuhide / Matsushita, Akio / Sasaki, Shigekazu / Oki, Yutaka / Nakamura, Hirotoshi

    Endocrine journal

    2019  Volume 67, Issue 2, Page(s) 125–130

    Abstract: A 74-year-old asymptomatic Japanese man with suspected thyroid dysfunction was referred to our hospital. He had an elevated TSH (53.8 mIU/L; reference interval: 0.5-5.0) despite a free T4 (FT4) level (1.4 ng/dL; reference interval: 0.9-1.6). Further ... ...

    Abstract A 74-year-old asymptomatic Japanese man with suspected thyroid dysfunction was referred to our hospital. He had an elevated TSH (53.8 mIU/L; reference interval: 0.5-5.0) despite a free T4 (FT4) level (1.4 ng/dL; reference interval: 0.9-1.6). Further analysis revealed macro-TSH. A notable finding was that a 500-μg TRH stimulation test revealed a blunted free T3 (FT3) response despite a prolonged TSH response. Macro-TSH typically presents with inappropriately marked elevation of serum TSH levels compared with other thyroid hormones, as exhibited in our case. However, the level of TSH elevation that might differentiate macro-TSH from subclinical hypothyroidism is poorly known. We retrospectively analyzed 8,183 concurrent measurements of TSH and FT4 in individuals previously examined in our hospital to define the cut-off value for screening cases of inappropriate TSH elevation. FT4 values were rounded off to one decimal place, and the 97.5th percentile of TSH against each FT4 value was calculated. The data of our patient and that of 30 cases of macro-TSH extracted from the English literature were then assessed. When the approximate curve obtained from the 97.5th percentile of TSH values was defined as the cut-off value [Log
    MeSH term(s) Aged ; Antigen-Antibody Complex/blood ; Antigen-Antibody Complex/immunology ; Humans ; Male ; Pituitary Function Tests ; Reference Values ; Thyroid Function Tests ; Thyrotropin/blood ; Thyrotropin/immunology ; Thyrotropin-Releasing Hormone ; Thyroxine/blood ; Triiodothyronine/blood
    Chemical Substances Antigen-Antibody Complex ; Triiodothyronine (06LU7C9H1V) ; Thyrotropin-Releasing Hormone (5Y5F15120W) ; Thyrotropin (9002-71-5) ; Thyroxine (Q51BO43MG4)
    Language English
    Publishing date 2019-10-24
    Publishing country Japan
    Document type Case Reports ; Journal Article
    ZDB-ID 1151918-6
    ISSN 1348-4540 ; 0918-8959
    ISSN (online) 1348-4540
    ISSN 0918-8959
    DOI 10.1507/endocrj.EJ19-0320
    Database MEDical Literature Analysis and Retrieval System OnLINE

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