• 대한두경부종양학회지
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• 제16권2호
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• pp.206-211
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• 2000

Objectives: Any uptake of I-131 after total thyroidectomy means the remant thyroid tissue or distant metastasis of the thyroid cancer. However diffuse hepatic uptake of I-131 without abnormal uptake was showen in many cases on I-131 whole body scan. The aim of this study was to classify the liver uptake after I-131 scan and to evaluate the analysis of this finding. Materials and Methods: Between 1982 and 1998, 104 patients(l4 males, 90 females) with normal liver function underwent I-131 scan after total thyroidectomy. Prospectively we reviewed the films of the whole body scan and analysed the correlations between results of radioiodine uptake, pathologic diagnosis, prognostic factors, lymphatic metastasis, and thyroid function test. Result: Diffuse hepatic uptake was found in 44 of 104(42%) patients. 10 of 39(26%) patients on I-131 100mCi, and 34 of 63(54%) on I-131 150mCi showed hepatic uptake. 52 of 104(50%) patients was locally invasive thyroid cancer. The rate of the hepatic uptake was no significant differences with the thyroid hormone levels(T3, Free T4) and thyroglobulin between uptake group and non-uptake group. Conclusion: The rate of I-131 uptake was high in high-dose radioiodine treatment group. However, we can not find any correlation among the thyroid functions, the extent of metastasis or the extent of local invasion. We need further study to find out the causes of the hepatic uptake of I-131 after total thyroidectomy, besides liver metabolism of I-131 attached thyroid hormones.

• Journal of Pharmaceutical Investigation
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• 제21권1호
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• pp.43-50
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• 1991

The hepatic uptake of an anionic fluorescence probe, l-anilino-8-naphthalene sulfonate (ANS) was characterized using isolated rat hepatocytes. The initial uptake rate of ANS by isolated hepatocytes was determined. The uptake process of ANS was fitted well to the Michaelis-Menten equation with a saturable component. The $V_{max}$ and $K_m$ values were $2.9{\pm}0.1\;nmol/min/mg$ protein and $29.1{\pm}3.2\;{\mu}M$, respectively. The uptake clearance $(CL_{up})$ based on the ratio of $V_{max}$ to $K_m$ was 11.7 ml/min/g liver, revealing the good coincidence with that assessed from the analysis of the plasma disappearance curve in previous report. Furthermore, the effect of serum protein on the hepatic uptake of ANS into isolated hepatocytes was investigated. The permeability clearances $(PS_{inf})$ of ANS uptake were much higher than those predicted based on the unbound fractions in the presence of serum. These suggested that the hepatic uptake of extensively serum protein-bound ANS is mediated not only by the unbound form of ligand but also by the serum protein-mediated uptake mechanism.

• 대한핵의학회지
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• 제28권3호
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• pp.357-363
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• 1994

1990년 1월부터 1992년 12월까지 서울대학교병원 소아과 및 소아외과에 황달을 주소로 입원하여 원인이 규명되었던 70명의 환아들에서 $^{99m}Tc$-DISIDA 신티그라피와 초음파검사를 실시하여 다음과 같은 성적을 얻었다. 1) 선천성 담도폐쇄증 30명 전예에서 소장방사능이 관찰되지 않았고 신생아간염 40명 중 31예에서 소장 방사능이 관찰되어 소장방사능의 유무에 따른 선천성 담도폐쇄증의 진단은 예민도 100% 특이도 78%, 정확도는 87%이었다. 2) 소장방사능이 관찰되지 않았던 환아에서 간정체 지표는 선천성 담토폐쇄증 16예가 $1.5{\pm}0.6$으로 신생아간염 7예의 $1.2{\pm}0.2$보다 높았고(p<0.05), 신생아간염의 간정체지표의 2표준편차 상한값인 1.5보다 높은 간정체지표를 보인 경우는 7예로 모두 선천성 담도폐쇄증이었다. 그러나 간정체지표가 1.5 이하인 16명중 9예는 선천성 담도폐쇄증, 7예는 신생아간염으로 이들에서는 간정체지표로 구별되지 않았다. 3) 간기능장애를 나타내는 요소를 분석하였을 때 간섭취도는 선천성 담도폐쇄증과 신생아간염에서 유의한 차이가 없었다. 연령과 간섭취지표는 일정한 상관관계가 없었고 총 빌리루빈치와 간섭취지표는 간섭취도가 정상인 환아의 총빌리루빈치가 상대적으로 낮다는 소견 이외에는 일정한 상관관계가 없었다. 신생아간염에서 소장방사능이 보이는 31예의 연령이 $2.1{\pm}0.7$ 개월로 보이지 않는 9예의 연령평균 $1.7{\pm}0.5$개월 보다 많았다(P<0.01). 4) 간섭취지표와 간정체지표와의 관계는, 간섭취지표가 높을 때 즉 간기능 저하가 심할 때 간정체지표가 높으면 즉 간섭취에이은 간정체가 일정이상 수준이면 신생아간염보다 선천성 담도폐쇄증일 가능성이 높았다. 이상의 결과로 연령이 증가하면 선천성 담도폐쇄증환아의 간기능이상은 진행하지만 신생아간염환아의 간기능장애의 정도는 연령과 무관하여, 간섭취지표로 기능을 평가하고 간정체지표로 판독하면 선천성 담도폐쇄증을 감별할 수 있다고 생각하였다. 그러나 간기능저하가 가볍고 간정체지표가 좋지 않을 때에는 역시 구별되지 않아 다른 검사결과를 참조한 임상판단에 의존하여야 할 것이며 수술적 간담도 조영술의 대상 예로 삼아야 한다고 생각하였다. 이 연구의 결과를 통하여 신생아에서 발생하는 황달의 원인을 규명하는데, $^{99m}Tc$-DISIDA 신티그라피가 유용한 검사법이며, 소장방사능이 관찰되지 않는 경우에는 간정체지표와 간섭취지표와의 관계를 고려하여 간섭취지표보다 간정체지표가 상대적으로 좋을 경우 선천성 담도폐쇄증의 가능성이 높아 감별에 도움되는 소견으로 사용할 수 있을 것으로 생각하였다.

• Journal of Pharmaceutical Investigation
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• 제20권4호
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• pp.179-191
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• 1990

A central dogma of pharmacology is that only unbound drug is capable of translocation across biological membrane. Thus, hepatic uptake is assumed to be solely determined by the unbound concentration of the diffusible moiety at the surface of the liver cell. However, an increasing number of experimental observations with xenobiotics that are normally very extensively bound to plasma proteins (>99%) appear to be inconsistent with these assumptions. This suggested that in addition to progressive spontaneous dissociation within the liver sinusoids and space of Disse, direct interactions of the albumin-drug complex at the plasma membrane may facilitate dissociation of the complex. To explain this phenomena. called albumin-mediated uptake, 4 mechanisms have been suggested. The validity of such hypotheses needs to be examined by the further study. Because albumin-mediated uptake has also been observed to occur in other plasma proteins, protein-mediated uptake rather than albumin-mediated uptake seems to be acceptable.

• Nutrition Research and Practice
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• 제10권5호
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• pp.477-486
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• 2016

BACKGROUND/OBJECTIVES: Consumption of pine nut oil (PNO) was shown to reduce weight gain and attenuate hepatic steatosis in mice fed a high-fat diet (HFD). The aim of this study was to examine the effects of PNO on both intestinal and hepatic lipid metabolism in mice fed control or HFD. MATERIALS/METHODS: Five-week-old C57BL/6 mice were fed control diets containing 10% energy fat from either Soybean Oil (SBO) or PNO, or HFD containing 15% energy fat from lard and 30% energy fat from SBO or PNO for 12 weeks. Expression of genes related to intestinal fatty acid (FA) uptake and channeling (Cd36, Fatp4, Acsl5, Acbp), intestinal chylomicron synthesis (Mtp, ApoB48, ApoA4), hepatic lipid uptake and channeling (Lrp1, Fatp5, Acsl1, Acbp), hepatic triacylglycerol (TAG) lipolysis and FA oxidation (Atgl, Cpt1a, Acadl, Ehhadh, Acaa1), as well as very low-density lipoprotein (VLDL) assembly (ApoB100) were determined by real-time PCR. RESULTS: In intestine, significantly lower Cd36 mRNA expression (P<0.05) and a tendency of lower ApoA4 mRNA levels (P = 0.07) was observed in PNO-fed mice, indicating that PNO consumption may decrease intestinal FA uptake and chylomicron assembly. PNO consumption tended to result in higher hepatic mRNA levels of Atgl (P = 0.08) and Cpt1a (P = 0.05). Significantly higher hepatic mRNA levels of Acadl and ApoB100 were detected in mice fed PNO diet (P<0.05). These results suggest that PNO could increase hepatic TAG metabolism; mitochondrial fatty acid oxidation and VLDL assembly. CONCLUSIONS: PNO replacement in the diet might function in prevention of excessive lipid uptake by intestine and improve hepatic lipid metabolism in both control diet and HFD fed mice.

• 대한핵의학회지
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• 제17권1호
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• pp.71-78
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• 1983

Twenty-nine patients with neonatal jaundice were evaluated with $^{99m}Tc-HIDA$ cholescin-tigraphy to elucidate its clinical applicability. Scintigraphic results were interpreted by the degree of early hepatic uptake and the presence or absence of radioactivity in the G-I tract. The results are as follows; I) In 18 patents with neonatal hepatitis; 8 of 11 patients with decreased hepatic uptake and all 5 patients with good hepatic uptake showed G-I radioactivity. But, the 2 remainders with poor hepatic extraction were not available for evaluation of neonatal jaundice due to patient's poor hepatic function. 2) In 9 patients, confirmed as biliary obstruction; all showed no G-I radioactivity but 3 of the 9 showed poor hepatic extraction on scan and they were not available for evaluation. 3) All the 2 patients with postoperative cholangitis showed G-I radioactivity on $^{99m}Tc-HIDA$ scan. 4) Relationship between histopathologic findings and $^{99m}Tc-HIDA$ scan; Among 5 patients with biliary cirrhosis 3 showed poor hepatic extraction, the remainders showed decreased and good hepatic uptake respectively. But, the 2 portal fibrosis without cirrhosis and 4 cholestasis showed decreased (4) or good hepatic uptake (2).

• Nuclear Medicine and Molecular Imaging
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• 제40권5호
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• pp.243-248
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• 2006

목적: 다른 기관들에 비해 간에서는 상대적으로 FDG 섭취 양상이 매우 불규칙하며, 악성 병변이 없는 간에서 비정상적으로 FDG 섭취가 증가하기도 한다. 하지만, 이제까지 이러한 다양한 간의 FDG 섭취를 간의 다른 양성 질환과 연관시킨 연구가 없어, 저자들은 이 연구에서 간에서의 FDG 섭취 양상과 지방간, 간 기능 검사, 지질 프로필을 포함하는 다양한 임상 요인과의 관계를 밝히고자 하였다. 대상 및 방법: 건강검진 목적으로 $^{18}F-FDG$ PET/CT를 시행한 188명 (남/여: 120/68, 평균나이: $50{\pm}9$세)을 대상으로 분석하였다. 간의 FDG 섭취에 영향을 줄 수 있는 당뇨 및 내당증 장애 환자, 심한 간질환이나 오랜 약물 복용의 기왕력이 있는 환자는 연구대상에서 제외하였다. PET/CT의 횡단면에서 간의 5번 분절에 해당하는 부위에 관심영역을 설정하고 이 부위의 평균 SUV를 구하여, 지방간이 있는 군과 없는 군 사이의 차이를 분석하였다. 또한 혈중 간 기능(ALT, AST), 알코올성 간질환(${\gamma}-GT$), 총 콜레스테롤, 중성지방 수치와 간의 FDC 섭취와의 관계를 알아보았다. 지방간 환자들의 체질량지수, 음주력을 조사하여 이 인자들이 간의 FDG 섭취에 미치는 영향도 분석하였다 결과 지방간이 있는 군의 평균 SUV가 지방간이 없는 군보다 통계적으로 유의하게 높았다(p<0.05). 혈중 총 콜레스테롤과 중성지방 수치는 간의 FDG 섭취와 유의한 상관관계를 보인 반면, 다른 요인들은 상관관계를 보이지 않았다. 또한, 지방간 환자에서 음주나 체질량 지수의 위험군과 비위험군 사이에 간의 FDG 섭취 정도는 차이는 보이지 않았다. 다변량 분석 결과, 지방간의 유무와 혈중 중성지방 수치가 간의 평균 SUV에 영향을 주는 유의한 독립 인자였다. 결론: 결론적으로 간의 FDG 섭취 정도는 지방간의 유무에 영향을 받으며, 중성지방 수치와 유의한 상관관계를 보였다.

• Journal of Nutrition and Health
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• 제32권4호
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• pp.369-375
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• 1999

Hyperthroidism in known to alter the activity of a number of enzymes involved in the catabolism of histidine to CO2. 10-Formyltetrahydrofolate dehydrogenase(EC 1.5, 1.6, 10-formyl-THE dehydrogenase) catalyzes the NADP-dependent conversion of 10-formyltetrahydrofolate to tetrahydrofolate and CO2. In previous studies, 10-formyl-THF dehydrogenase purified from rat and pig liver was coidentified with the cytosolic folate-binding protein. In this study, we investigated the effects of feeding thyroid powder (TP) and thiouracil(TU) on the folate-binding properties of 10-formyl-THE dehydrogenase, the uptake of an injected dose of [3H] folate, and the metabolism of labeled folate to pteroylopoly-${\gamma}$-glutamate in rat liver. The initial hepatic uptake(24hr) of the labeled folate dose was higher in TU-rats and slightly higher in TP-rats in controls. With longer time periods, decreased hepatic uptake of labeled folate was observed in TP-animals compared to euthroid animals, and high levels of hepatic uptake of labeled folate were maintained in TU-animals. This data shows that high levels of thyroid hormone decreased the retention of folate in rat liver. Folate polygutamate chain length was shorter in TU-rats than controls, which suggests that thyroid states do not affect the ability to synthesize pteroylpolyglutamates and that folate polyglutamate might be modulated by altered folate pool size. The ability of 10-formyl-THE dehydrogenase to bind folate in rat liver was similar in both TP-and TU-rats although dehydrogenase activity was changed by thyroid sates.

• 대한핵의학회지
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• 제22권1호
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• pp.47-53
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• 1988

Budd-Chiari syndrome (BCS) is a rare clinical entity characterized by post-sinusoidal portal hypertension caused by the obstruction to the hepatic vein outflow The diagnosis is suggested by hepatic scintigraphy and is usually confirmed by hepatic venography, inferior vena cavography and biopsy. The scintigraphic finding of BCS caused by the obstruction of main hepatic vein has been reported to consist typically of hypertrophy of the caudate lobe with increased radionuclide accumulation. Such a typical finding has been accounted for by the fact that the venous outflow from the caudate lobe is preserved when the main hepatic vein is obstructed. But usually, the hepatic venous outflow from the caudate lobe is also obstructed in BCS due to inferior vena caval obstruction. So hepatic scintigraphic findings of BCS due to inferior vena caval obstruction show different findings as compared with the BCS due to hepatic vein obstruction. We evaluate the hepatic scintigrams of the 13 cases of BCS due to inferior vena caval obstruction and review the literatures. The results are as follows : 1) We cannot observe the caudate lobe hypertrophy with increased uptake, which is known as a classic finding in BCS due to hepatic vein obstruction. 2) The most prominent hepatic scintigraphic findings of BCS are nonhomogenous uptake in the liver with extrahepatic uptake in the all cases. 3) We can see cold areas at the superior aspect of right hepatic lobe in 7 cases (54%). This is a useful finding suggesting BCS due to inferior vena caval obstruction.

• 대한핵의학회지
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• 제5권1호
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• pp.49-64
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• 1971

The radioactive $^{131}I$-rose bengal serial scintiphotography was performed in 62 patients with the hepatobiliary diseases and in 20 normal subjects. This approach permitted visualization of the hepatic uptake of $^{131}I$-rose bengal from the circulation and its excretion into the biliary trees and the intestines. In some of these patients, gallbladder function was examined, using eggs as a gallbladder constrictor. The time of maximum hepatic uptake was well correlated to the conventional biochemical liver function tests. In addition to $^{131}I$-rose bengal scintiphotography, $^{198}Au$-colloid scintiphotography was also performed to make comparison of these two tests. The results obtained were as follows: 1. In normal subjects, the maximum hepatic uptake of $^{131}I$-rose bengal occurred at $23{\pm}2.9$ minutes, the initial hepatic excretion at $34{\pm}5.1$ minutes, the visualization of the gallbladder at $29{\pm}5.7$ minutes and the intestinal visualization at $54{\pm}25.8$ minutes. The radioactivity in the gallbladder decreased to $10.7{\pm}5.0%$ one hour after the ingestion of eggs. 2. In the patients with cirrhosis of the liver, there was a delayed and decreased hepatic uptake. The maximun hepatic upake occurred at $43{\pm}12.9$ minutes. The differences in the results of uptake between the cirrhotic and the normal group were statistically significant. The initial hepatic excretion occurred at $60{\pm}18.5$ minutes and had tendency of delaying compared with the normal controls. The gallbladder was visualized in 13 of 16 cases (81%) and its visualization occurred at $49{\pm}14.6$ minutes with a tendency to be delayed compared with the normal controls. The intestinal visualization occurred at $63{\pm}15.8$ minutes and its delaying tendency was somewhat more prominent. 3. In patients with hepatitis, the maximum hepatic uptake occurred at $59{\pm}21.4$ minutes and was significantly delayed. The initial hepatic excretion occurred at $82{\pm}34.3$ minutes and the results revealed a delaying tendency. The gallbladder was visualized in 15 of 20 cases (75%) at $57{\pm}18.7$ minutes, which was significantly delayed. The Intestinal visualization was noted in all cases with marked delay. 4. In patients with obstructive jaundice, the maximum hepatic uptake was noted at $83{\pm}14.7$ minutes, showing the most significant delay. The hepatic excretion into biliary trees and intestines was not entirely noted in all cases except the only one case with gallbladder visualization. 5. In patients with cholelithiasis, the maximum hepatic upake and the initial hepatic excretion were slightly delayed with mean times of $39{\pm}11.2\;and\;48{\pm}17.1$ minutes respectively. The visualization of the gallbladder was demonstrated in 10 of 17 cases (59%) and occurred at $52{\pm}25.6$ minutes with a slight delay. The intestinal visualization occurred at $67{\pm}47.7$ minutes and was slightly delayed. $^{131}I$-rose bengal in the gallbladder remained high, $49.3{\pm}21.3%$, which suggested quantitatively decreased power of gallbladder constriction. 6. The time of the maximum hepetic uptake was correlated well to BSP retention and serum alkaline phosphatase ativity. However, the maximum hepatic uptake had no definite correlation with serum albumin, serum globulin, TTT, serum cholesterol, SGPT or SGOT. 7. In the diagnosis of the hepatobiliary diseases with jaundice, $^{131}I$-rose bengel serial scintiphotography has proved to be more useful than $^{198}Au$-colloid scintiphotography. With these results, it could be justified that $^{131}I$-rose bengal scintiphotography is an excellent diagnostic aid for dynamic hepatobiliary function studies in the clinical practice.