• 한국동물학회지
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• 제8권2호
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• pp.85-88
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• 1965

There are few papers on the biosynthesis of serotonin in the enterochromaffin cell in the pancrease. The present studies were performed to clarify this problem by use of autoradiography in the auinea pig injected of 5-HTP-H3 in dose of 1 vc/g. body weight, The appearance of the above mentioned cells in the pancreas of the rabbit was also studied morphologically. The results are as follows ; 1. Enterochromaffin cells were found in the epithelia of all the pancreating ducts and a few acini of normal male rabbit and most numerous in the intramural pancreatic ducts. 2. The redioautographic silver grains overling the enterochormaffin cells in the guinea pig pancreas are considered to be due to the newly synthesized radioactive serotonin in the cells from injected 5-HTP-H3.

• Journal of Plant Biology
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• 제38권1호
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• pp.25-32
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• 1995

The distribution of RNA in the anther wall of Brassica napus during male gametogenesis was followed by 3H-uridine autoradiography. Silver grain(SG) density was not above background in the anther wall just after microspore was released from tetrad callose wall. Significant accumulation of SGs occurred in tapetum, endothecium, and epidermis before microspore vacuolation. Accumulation of RNA in the tapetal cells was peak before the vaculation occurred in the microspore. With the onset of tapetal senescence at the partially vacuolated microspore stage, SGs decreased and they completely disappeared in the tapetum at the bicelled pollen stage. Accumulation of RNA in the endothecial cells was peak after the microspore mitosis and continued just after the generative cell mitosis. Appreciable SGs also occurred in cells of epidermis from nonvacuolate microspore stage to bicelled pollen stage. During this period, SG density was almost same and was not high as compared with tapetum or endothecium. At tricelled mature pollen stage, no incorporation occurred in anther wall. SGs were found mostly over the nucleouls and chromation of the cell nuclei.

• Journal of Plant Biology
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• 제36권3호
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• pp.241-249
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• 1993

The pattern of RNA synthesis during male gametogenesis of Brassica napus was studied using 3H-uridine autoradiography. No incorporation of isotope occurred in the newly released microspore and the nonvacuolate, furrowed microspore. Peak incorporation of label during male gametogenesis occurred in the uninucleate, furrowed microspores showing various degrees of vacuolation. In this microspore stage, silver grains were localized in the nucleus and cytoplasm. Moderate incorporation of the isotope occurred in the nulceus of the vacuolated microspore. After the microspore mitosis, isotope incorporation occurred predominantly in the nucleus of the vegetative cell with little or no incorporation in the generative cell. In tricellular pollen, no incorporation of isotope was observed in both the vegetative nucleus and the sperms. Silver grains almost completely disappeared from tricellular mature pollen grains ready to germinate.

• 한국동물학회지
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• 제38권1호
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• pp.106-114
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• 1995

배추흰나비의 조직과 발생시기에 따른 발생 특이 큐티클단백질의 질적 분포를 조사하기 위해 전기영동법, western blotting 및 autoradiography 법을 사용하였다. SDS-PAGE에서 유충기에는 4개, 용기에는 3개의 단백질이 발생 특이 큐티클단백질로 확인되었다. 전기영동적 이동도로 보아 유충기의 62 Kd 큐티클단백질은 지방체 표피, 혈림프에 모두 분포하며. 22 Kd, 16 Kd 단백질은 지방체와 표피, 그리고 19 Kd 단백질은 지방체에서 확인되고 있으며, 용기의 37 Kd 단백질은 표피에서. 28 Kd, 27 Kd 단백질은 표피와 지방체에 분포하는 양상을 보이고 있다 면역학적 방법으로 발생 특이 큐티클단백질의 동질성을 조사한 결과 용기의 27 Kd 단백질은 표피와 지방체에서 반응을 나타내며, 유충기의 22 Kd 단백질은 단지 표피에서만 미약하게 이의 동질성을 보여주고 있다 즉, 27 Kd 단백질은 지방체 22 Kd 단백질은 표피에서 기원하고 있어 발생 특이 큐티클단백질의 합성부위는 한 조직에서 기원하는 것이 아니라 각기 상이한 조직으로 부터 생성되는 것으로 사료된다.

• Biomolecules & Therapeutics
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• 제30권4호
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• pp.328-333
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• 2022

Repeated morphine administration induces tolerance to its analgesic effects. A previous study reported that repeated morphine treatment activates transient receptor potential vanilloid type 1 (TRPV1) expression in the sciatic nerve, dorsal root ganglion, and spinal cord, contributing to morphine tolerance. In the present study, we analyzed TRPV1 expression and binding sites in supraspinal pain pathways in morphine-tolerant mice. The TRPV1 mRNA levels and binding sites were remarkably increased in the cortex and thalamus of these animals. Our data provide additional insights into the effects of morphine on TRPV1 in the brain and suggest that changes in the expression of, and binding to TRPV1 in the brain are involved in morphine tolerance.

• 대한수의학회지
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• 제15권1호
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• pp.57-67
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• 1975

The poxvirus group is considered to be a typical cytoplasmic inclusion forming virus. Every poxvirus has been reported to produce only one kind of inclusion in the infected tissues. A vague concept that inclusions of poxviruses are eosinophilic or acidophilic has prevailed. Although many papers and theories about the nature of the inclusion have been presented, most of them are not quite convincing on the point of the relations with virus multiplication, and an analysis of papers published showed that there seem to be many discrepancies in the descriptions of the nature of the poxvirus inclusions. Comparative studies on host-virus interaction with cowpox, orf, swinepox and fowlpox viruses which selected from each Group (I-IV) of poxviruses were performed from the morphological and virological standpoints. At first, in cowpox virus-FL cell system, as a comparative model, cytoplasmic inclusion, nucleic acid metabolism by autoradiography and detection of viral antigen by immunofluorescence were studied and obtained the results as follows: 1. The focus-like cytopathic effect (CPE) at early stage developed to entire culture at terminal stage of infection, and also the developing status of CPE was correlated to viral doses for inoculation. Two kinds of cytoplasmic inclusions which named A and B type were easily observed by Giemsa, hematoxylin-eosin (H & E) and May-Greenwald Giemsa (MGG) stainings in the infected cells. The B type inclusions were formed at early stage of infection and the A type inclusions were produced subsequently the B type formation. The B type which common type inclusion in poxviruses was a small compact or aggregate at early stage and developed to a large diffuse body at terminal stage of infection. On the other hand, the A type inclusion which depend upon the kind of virus was appeared as round and discrete shape, and its size and number was increased gradually during the culture period. It was characteristic to form distinct halos around the both types of inclusions in acid fixed, H & E stained preparations of infected cultures. The B type inclusion was always positive in Feulgen reaction and showed as DNA containing body but the A type inclusion was not. 2. In the relationship between inclusion and DNA metabolism of infected cells by the qualitative autoradiography using 3H-thymidine, the appearance of silver grains was coincided with B type inclusion but not with A type inclusion. This showed that the DNA synthesis was proceeded in all B type inclusions except those in the terminal stage with a diffuse form. This suggested that the B type inclusions are only sites of DNA synthesis and this was proceeded after the cell infection independently. The activity of DNA synthesis of the inclusions was nearly the same as that of the nucleic of normal cells and non-inclusion bearing cells. and non-inclusion bearing cells. Regardless of the size of the degree of DNA synthesis of the B type inclusion, inclusion bearing cells all showed remarkable suppression of nuclear DNA synthesis. 3. By the direct fluorescent antibody technique viral antigen in infected cells was detected. The B type inclusions have been proved to contain a great deal of viral antigen, whereas the basic substance of A type inclusion did not show antigenicity except the round edge. It was suggested that the round edge fluorescence might be caused by the glare of cytoplasmic viral antigen which pushed out and concentrated by the A type inclusion development. 4. Hemorrhagic red pock formations on chorioallantoic membrane of embryonated chicken egg had proved the characteristic of used viral strain. 5. By the above studies on the nature of two types of inclusions and the role they play in virus multiplication, it was concluded that the B type inclusion must be the site of the synthesis of viral DNA and protein as well as the site of the virus.

• 대한핵의학회지
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• 제31권1호
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• pp.9-18
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• 1997

목 적 : 본 연구에서는 정량적 자가방사선사진법을 이용하여 비정형 항정신병 약물의 하나인 risperidone 이 백서 뇌의 신경수용체에 어떻게 작용하는지를 알아보고자 하였다. 대상 및 방법 : 급성투여군은 백서 30마리를 6군으로 나누어 0, 0.1, 0.25, 0.5, 1, 2mg/kg의 risperidone을 복강내 투여하고 2시간후에 단두하였고, 만성투여군은 0, 0.1, 1mg/kg의 risperidone을 21일간 복강내 투여후 단두하여 정량적자가 방사선사진법으로 $5-HT_2$과 $D_2$ 수용체에 대한 [$^3H$]spiperone 결합을 측정함으로써, 선조체, 측좌핵, 전두엽피질 각각의 $5-HT_2$과 $D_2$ 수용체의 분포변화를 측정하고 투여량에 따른 수용체의 영향을 ANOVA 검정으로 분석하였다. 결 과 : 급성투여군에서 $5-HT_2$ 수용체는 전두엽 피질에서 risperidone 투여후 0.1-2mg/kg의 투여 범위전체에서 [$^3H$]spiperone 결합이 대조군에 비하여 32% 이하로 감소하여 통계적으로 유의한 차이를 보였으며, 선조체와 측좌핵의 피질하 수용체에서는 거의 결합을 보이지 않았다. $D_2$ 수용체는 risperidone 투여량의 증가에 따라 선조체와 측좌핵의 [$^3H$]spiperone 결합이 감소하였으며, 1-2mg/kg의 투여량을 준 경우에는 대조군에 비해 57% 이하로 감소하여 통계적으로 유의한 차이를 보였다. 만성투여군에서는 피질의 $5-HT_2$ 수용체가 대조군에 비하여 저용량투여군과 고용량투여군에서 각각 51%와 46%로 감소하였다. 결론 : Risperidone은 $D_2$ 수용체를 약하게 차단하며 $D_2$ 수용체에 영향을 주는 양보다 적은 양을 투여해도 $5-HT_2$ 수용체를 차단하는 효과를 보임으로써 $5-HT_2$ 수용체에 강력히 작용하는 비정형 항정신병 약물임을 알 수 있었다.

• Journal of Acupuncture Research
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• 제18권3호
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• pp.56-68
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• 2001

Objective : Functional brain mapping study on acupuncture stimulation using the [14C]2-deoxyglucose([14C]2-DG) autoradiography provides quantitative data and visualized pathway in central nervous system(CNS). We aimed to investigate the neural pathway and spatial distribution of metabolic activity elicited in CNS on electroacupuncture stimulation using [14C]2-DG autoradiography. Methods : The study were divided into three groups by stimulation times. 45-mins stimulation group according to Sokoloffs method, 5-mins stimulation group according to Duncun's method, and 15-mins stimulation group. ;A venous catheter was equipped into right jugular vein. The rats (Sprague-Dawley rats, 230-260g) were kept fastened loosely on a holding platform without anesthesia. Electroacupuncture stimulation (5 ms, 2 Hz, 1~3 mA) were applied on the left Zusanli (ST36) acupoint and [14C]2-DG ($25{\mu}Ci/rat$) injection was performed through the catheter. After sacrifice, the brain and the spinal cord were made to sections for film image. The film images were digitalized as the isotope concentration based upon comparison of optical densities with that of the standards and normalized by the optical density of corpus callosum. Results : 1. 15-mins stimulation group was most effective among 3 experiments. 2. On 15-mins stimulation group, medial geniculate nucleus, intetpeduncular nucleus intermedius, ventral periolivary nucleus, caudal periolivary nucleus, medial superior olive, lateral paragigantocellular nucleus, including hypothalamic arcuate nucleus were increased by more than 25% (at least, p<0.05) by electroacupuncture stimulation. 3. Especially, the metabolism in hypothalamic arcuate nucleus was increased by 90% (p<0.05). 4. The fact that arcuate nucleus of hypothalamus might play a role of interconnection area between ascending and descending pathway of acupuncture stimulation was demonstrated visually. Conclusions : Advanced study on electroacupuncture stimulation elicited significant increase of metabolic activity in various nuclei of hypothalamus will provide the important experimental basis in research of the relationship between electroacupuncture stimulation and internal visceral functions.

• 대한핵의학회지
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• 제37권5호
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• pp.301-307
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• 2003

목적: 리피오돌은 간암환자의 간동맥으로 투여시 암에 많이 섭취된다. 이 연구에서는 Re-188-황 교질/리피오돌을 제조하여 생체내분포를 보았다. 재료 및 방법: Re-188-황 교질/리피오돌을 마우스의 꼬리정맥으로 주사한후 1 시간 후에 생체내 분포를 확인하였다. 간암을 유발시킨 백서의 좌심실로 Re-188-황 교질/리피오돌을 주사하고 5 분후의 생체내 분포와 간의 자가방사사진을 보았다. 결과: Re-188-황 교질/리피오돌을 마우스의 꼬리정맥으로 주사한 후 1시간(n=3)섭취율(% ID/organ)은 간에서 $5.2{\pm}0.7$, 폐는 $91.0{\pm}1.7$이었다. 간암을 유발시킨 백서의 좌심실로 Re-188-황 교질/리피오돌을 주사한 후 5 분(n=4)의 정상간의 섭취율(% ID/g)은 $0.41{\pm}0.28$, 간암은 $1.88{\pm}1.57$, 폐는 $1.65{\pm}1.54$였으며, 자가방사사진에서도 간암부위의 섭취가 정상적인 간조직 보다 증가되었다. 결론: Re-188-황 교질/리피오돌을 동맥으로 투여시 간암부위의 섭취가 정상적인 간조직보다 많아 간암치료용 방사성의약품으로서 사용할 수 있음을 알았다.

• 대한핵의학회지
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• 제30권3호
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• pp.344-350
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• 1996

Iododeoxyuridine의 유사체인 Iodine-131-5-Iodo-2'-O-methyluridine을 합성하여 종양세포의 증식을 영상화하고자 하였다. 2'-O-methyluridine을 이용하여 Iodine-131-Iodomethyluridine을 요오드발생 반응(Iodogen reaction)으로 간편하게 합성하였고 이를 이용한 자가방사영상과 핵의학영상에서 종양세포의 증식을 영상화 할 수 있었다. 이상의 결과는 Iodine-131-Iodomethyluridine을 이용하여 종양세포의 증식을 감마카메라로 영상화하여 세포증식이 활발한 생존 종양조직이나 재발을 평가할 수 있는 가능성이 있음을 시사한다.