• The Korean Journal of Physiology and Pharmacology
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• 제3권3호
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• pp.329-337
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• 1999

Thyroid hormone-induced cellular dysfunctions may be associated with changes in the intracellular $Ca^{2+}$ concentration. The ryanodine receptor, a $Ca^{2+}$ release channel of the SR, is responsible for the rapid release of $Ca^{2+}$ that activates cardiac muscle contraction. In the excitation-contaction coupling cascade, activation of ryanodine receptors is initiated by the activity of sarcolemmal $Ca^{2+}$ channels, the dihydropyridine receptors. In hyperthyroidism left ventricular contractility and relaxation velocity were increased, whereas these parameters were decreased in hypothyroidism. The mechanisms for these changes have been suggested to include alterations in the expression and/or activity levels of various proteins. In the present study, quantitative changes of ryanodine receptors and the dihydropyridine receptors, and the functional consequences of these changes in various thyroid states were investigated. In hyperthyroid hearts, $[^3H]ryanodine$ binding and ryanodine receptor mRNA levels were increased, but protein levels of ryanodine were not changed significantly. However, the above parameters were markedly decreased in hypothyroid hearts. In case of dihydropyridine receptor, there were a significant increase in the mRNA and protein levels, and [3H]nitrendipine binding, whereas no changes were observed in these parameters of hypothyroid hearts. Our findings indicate that hyperthyroidism is associated with increases in ryanodine receptor and dihydropyridine receptor expression levels, which is well correlated with the ryanodine and dihydropyridine binding. Whereas opposite changes occur in ryanodine receptor of the hypothyroid hearts.

• 한국영양학회:학술대회논문집
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• 한국영양학회 1995년도 추계학술대회 초록
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• pp.35-35
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• 1995

• 한국독성학회:학술대회논문집
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• 한국독성학회 2006년도 춘계학술대회
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• pp.93-102
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• 2006

• 대한핵의학회:학술대회논문집
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• 대한핵의학회 1976년도 제15차 학술대회
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• pp.67.3-67.3
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• 1976

• 한국영양학회:학술대회논문집
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• 한국영양학회 1994년도 춘계심포지움 및 발표논문 초록
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• pp.47-47
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• 1994

• Endocrinology and Metabolism
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• 제33권4호
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• pp.445-446
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• 2018

• 한국가금학회지
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• 제26권4호
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• pp.237-245
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• 1999

This study was conducted to investigate the effect of dietary thyroid hormone (T$_3$and T$_4$) on growth, feed conversion ratio and serum T$_3$or T$_4$concentration of broiler chicks. Zero to six week-old broiler chicks were randomly allocated into seven treatment groups for feeding trials with three replication : control, T$_3$(0.1), T$_3$(1.0), T$_3$(5.0), T$_4$(0.1), T$_4$(1.0), T$_4$(5.0) ppm group. Concentrations of T$_3$and T$_4$in serum were analyzed. The weight gain of T$_3$(1.0), T$_3$(5.0) and T$_4$(5.0) groups were significantly lower than that of control. No statistically significant adverse effect was observed in other groups (p〉0.05). Feed intake was significantly lower in T$_3$(0.1, 1.0 and 5.0) and T$_4$(5.0) than in control group (p〈0.05), and the feed conversion ratio had a similar trend to the feed intake change. The contents of liquid and abdominal fat pad in carcass were significantly decreased in all T$_3$and T$_4$groups (p〈0.05). T$_3$and T$_4$concentration in serum was significantly increased at over 1.0ppm of the hormone supplementation level. As T$_3$addition level increased, T$_4$concentration in serum reduced ; however, T$_3$in serum was directly proportional during fasted were slightly increased when T$_3$or T$_4$was added to broiler diets.

• 대한후두음성언어의학회지
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• 제24권1호
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• pp.33-40
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• 2013

Background and Objectives:This study is to objectively compare and analyze the acoustic changes in the patients with total thyroidectomy before and after RI therapy. Subjects and Methods:For this study, a total of 50 patients with total thyroidectomy were participated as subjects. Voice samples were obtained at the time of post-operation (Post-OP), before high-dose radioactive iodine therapy (Pre-RIT), and after high-dose radioactive iodine therapy (Post-RIT). Acoustic analysis, the maximum phonation time and K-VHI (Korea-Voice handicap index) were used for subjective evaluation. Results:According to the comparison analysis of the three periods, mFo (Hz) was significantly reduced in all of the vowels /a/ and /i/ as the hormone was discontinued. This can be related to the reduction in vocal range. As thyroid hormone was discontinued, Shim (%) and APQ (%) values, which are the parameters related to the degree of aggressiveness, showed a significant increase in the middle vowel /a/. As thyroid hormone was discontinued, emotional index was significantly decreased in VHI (voice handicap index). Conclusion:These results can be assumed that thyroid hormone suspension is related to the increased changes in the vocal intensity, the increase in noise and the reduction in vocal range. Emotionally, these data can be assumed that the responsive factors of one's own voice disorders were significantly decreased in the patients with vocal handicap.

• Clinical and Experimental Pediatrics
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• 제48권2호
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• pp.143-147
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• 2005

목 적 : 갑상선 기능은 여러 질환이나 스트레스에 의해서 영향을 받는 것으로 알려져 있다. 저자들은 분만 전과 분만 동안의 여러 인자와 제대혈 갑상선자극호르몬 및 갑상선호르몬 농도와의 상관관계를 알아보고자 본 연구를 시행하였다. 방 법 : 총 130명의 신생아를 대상으로 분만 즉시 제대혈을 10 mL 채취하여 갑상선자극호르몬, $T_3$와 유리 $T_4$ 농도를 방사면역학적 방법(CIS bio international kit, Germany)으로 측정하였다. 재태연령, 출생체중, 가사, 분만방식, 산모의 당뇨병 유무, 산모의 전자간증 유무 등에 따라 갑상선자극호르몬과 갑상선 호르몬 농도를 비교하였다. 결 과 : 1) 제대혈 갑상선자극호르몬 농도는 재태연령 34주 이하 $1.73{\pm}0.48{\mu}IU/mL$, 34주-37주 $2.60{\pm}0.51{\mu}IU/mL$, 38주 이상 $4.26{\pm}0.40{\mu}IU/mL$으로 재태연령의 증가에 따라 증가하였다(P<0.05). 2) 분만형태를 비교하면 질식 분만 군 $4.42{\pm}0.66{\mu}IU/mL$, 제왕절개 분만 군 $3.31{\pm}0.33{\mu}IU/mL$로 질식 분만 군에서 높았다(P<0.05). 3) 가사에 따른 갑상선자극호르몬 농도는 가사가 있는 군 $5.18{\pm}0.93{\mu}IU/mL$로 가사가 없는 군 $2.97{\pm}0.84{\mu}IU/mL$에 비해 유의하게 높았다(P<0.05). 4) 산모의 당뇨병에 따른 갑상선자극호르몬 농도는 당뇨병 군 $8.91{\pm}1.25{\mu}IU/mL$, 없는 군 $4.32{\pm}0.42{\mu}IU/mL$으로 산모 당뇨병 동반시 유의하게 높았다(P<0.05). 5) 산모에게 전자간증이 있는 군의 갑상선자극호르몬 농도는 $5.28{\pm}0.42{\mu}IU/mL$, 없는 군 $3.65{\pm}0.46{\mu}IU/mL$에 비해 유의하게 높았다(P<0.05). 6) $T_3$와 유리 $T_4$ 농도는 가사 군에서 없는 군보다 유의하게 낮았다(P<0.05). 7) 각 변수 간의 영향을 배제하였을때 임신주수, 1분 Apgar 점수, 산모의 당뇨병만이 독립적으로 제대혈의 갑상선자극호르몬 농도에 영향을 미치는 것으로 나타났다. 결 론 : 제대혈 갑상선자극호르몬 및 갑상선호르몬 농도는 산모의 당뇨병이나 산모 전자간증과 같은 분만 전 요인과 태아에게 저산소증을 초래할 수 있는 분만시 스트레스와 밀접한 연관이 있다.

• 대한핵의학회지
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• 제23권1호
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• pp.1-6
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• 1989

The occurrence of thyroid disorders is connected with iodine deficiency, defective synthesis or releasing of thyroid hormone and endemicity. Genetic factors are known as a single gene defects, interaction of multiple genes with environmental factors, as well as chromosomal aberrations. Diofnosis thyroid disorders is enforced by I-131 uptake test, thyroid scanning with I-131 or Tc-99 m and serum radioimmunoassays of T3, T4, free T4 and TSH. They were largely classified as hypothyroidism, hyperthyroidism, simple goiter and normal. The pedigree of 58 families was drawn by propositus, and then the correlation between thyroid disorders and TSH levels was analyzed. The results are as follows: 1) The offsprings and their mothers of 15 families were hypothyroidism, THS level was 5 folds for offsprings and 4 folds for mothers in comparison with control group. 2) 13 families were hyperthyyroidism in siblings but their mothers were normal in thyroid function, TSH level of the siblings was lower than control group. 3) Though the offsprings and their mothers of 10 families were similar to TSH level of control group, they are all simple goiter, familial thyroid disorders, in other thyroid function test. The familial thyroid disorders suggested that these transmitted from mothers to offsprings with X-linked dominant or autosomal dominant inheritance.