• Korean Journal of Environmental Biology
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• v.22 no.1
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• pp.133-140
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• 2004

The histopathologieal effects of his(tri-n-butyltin)oxide (TBTO) on the flounder, Paralichthys otivaceus were examined by means of histological methods. The experimental fishes were exposed to 0.17, 0.36, 0.60, 3.20, 6.30, 12.50 ${\mu}g \;L^{-1}$TBTO concentrations for 42 days. Histopathological change of the fish exposed to TBTO is dependent on the exposure duration and concentration. In the lower concentrations early histological changes included activated mucous cells and chloride cells, capillary hyperemia and epithelial hyperplasia in the gill; hepatocyte activation, degeneration of bile duct and pancyeatic zymogen reduction in the hepatopancreas; and capillary hyperemia, appearance of eosinophilic cell and melano-macrophagocytes in the kidney. At the higher concentrations histological changes of dysfunctionality included epithelial lifting and deformation of the lamellae in the gill; pycnosis and cytoplasmic degeneration of hepatocyte; pycnosis of haemopoietic cell and deformation of renal tubules and glomerulus in the kidney. It is indicated that TBTO induced histopathological changes in the fish as other aquatic pollutants.

• The Monthly Diabetes
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• s.203
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• pp.22-43
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• 2006

지난 18일 통계청이 발표한 2005년 사망원인통계결과에 의하면 2005년에 각종 암으로 사망한 사람은 총65만명으로 사망원인 중 1위를 차지했다.(전체 사망자의 26.7%), 그 다음으로는 뇌혈관 질환,심장질환,자살,당뇨병 순으로 통계 됐다. 2005년에 가장 많이 사망한 암은 폐암으로 전체 사망자의 28.4%인 13,805명이였으며, 다음으로는 위암(22.6%), 간암(22.5%), 데장암(12.5%), 췌장암(7%)의 순으로 나타났다. 사망률이 가장 많이 증가한 암은 2004년과 같이 폐암이며, 그 다음으로는 대장암,췌장암,전립선암이다. 반면 사망률이 가장 많이 감소한 암은 위암이고, 그 다음이 자궁암이다. 이렇듯 암은 한국인에게서 가장 많이 발견되는 질병 중에 하나이며, 이로 인해 많은 사람들이 사망하고 있다. 10월호에서는 과연 암이란 어떤 질병이고, 어떻게 우리의 생명을 위협하는지 알아보고자 한다.

• Korean Journal of Food Science and Technology
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• v.46 no.6
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• pp.716-722
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• 2014

Aminopeptidase-active fractions from crude extract of the hepatopancreas of a common squid (Todarodes pacificus) were obtained using acetone (AC; 30-40%) and ammonium sulfate precipitation (AS; 60-70% saturation), anion exchange (AE-II; 0.2 M NaCl) and gel filtration chromatography (GF-I; 30-50 kDa), respectively. The debittering capacity of GF-I fraction based on the aminopeptidase activity (89.2 U/mg), recovery (56.6%) and sensory evaluation (1.0) was better than that of other fractions. Release of amino acids increased as incubation time was increased, and the bitterness of the enzyme reaction mixtures decreased. Incubation with the GF-I fraction for 24 h resulted in the hydrolysis of several peptides, as revealed by reverse-phase HPLC profiles. Peaks 3, 5 and 6 showed the decreased area (%), whereas peaks 1, 2 and 4 showed the increased area. The GF-I fractions were found to be suitable for reducing bitterness in protein hydrolysates by catalyzing the hydrolysis of bitter peptides.

• Journal of Aquaculture
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• v.11 no.2
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• pp.271-278
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• 1998

To clarify characteristics of yolk protein of abalone, yolk protein was purified from the ovarian egg extracts of mature female Haliotis discus hannai by a gel chromatography of sepharose CL-4B. From the results of immuno-electrophoresis and Ouchterlony's diffusion test to male and female sera and ovarian egg extracts using antibodies raised against mature female and male sera and male sera and ovarian egg extrascts, it was identified that the mature female serum had female specific serum protein and its antigenecity shared with ovarian egg extracts. A single type of yolk protein was purified from ovarian egg extracts, and it was composed of two subunits. Their molecular weights were estimated to be approximately 166 KDa and 113 KDa by SDSPAGE. The antiserum against yolk proteins cross-reacted with a mature female specific serum protein and extracts of hepatopancreas of vitellogeing females, but did not reacted with extracts of hepatopancreas of mature male.

• Journal of Marine Life Science
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• v.7 no.2
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• pp.163-170
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• 2022

In this study, the results of hybridization were evaluated by analyzing the biomarkers of Haliotis discus hannai and hybrid abalone (H. madaka♀^*H. discus discus♂) in marine net cage. The survival rate was similar both experimental groups, but the growth (shell length) was about 10% faster in hybrid abalone. The deformity of respiratory pore in the hybrid abalone was about 6% lower than H. discus hannai, and the shell depression was about 15% lower in the hybrid abalone. In the biochemical composition, crude protein was about 3.1% higher in hybrid abalone, and showed similar values except for the crude protein. In the histological structure of the hepatopancreas, which performs the functions of digestion, absorption and detoxification of abalone, good results were obtained in the hybrid abalone. On these results, it is judged that the hybrid abalone will have high aquaculture productivity in the aquaculture environment.

• The Korean Journal of Malacology
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• v.24 no.3
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• pp.253-260
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• 2008

A total of 15 different residues of polycyclic aromatic hydrocarbons (PAHs) in each 20 samples of Pacific oysters, dried laver and rockfish obtained from seafood markets were analyzed. The prevalence of samples in which more than one PAH residues were found was 75% in oyster, 35% in rock fish hepatopancreas, 0% in rockfish muscle and laver, respectively. To estimate factors contributing to this residue level difference among organisms, tissue concentrations were analyzed after exposing three organisms to phenanthrene, a representative PAH, with concentration of 0.01 or $0.1{\mu}g/mL$ for 2 weeks. Phenanthrene levels after exposure were higher in the oyster digestive gland, laver and rockfish hepatopancreas, but were lower in the oyster whole meat or rockfish muscle. This finding disproved that any close relationship between the residue difference of market samples and concentrating properties of PAHs. The second possible factor analyzed was total lipid contents in the three organisms. Although higher lipid level in hepatopancreas of rockfish may contribute accumulation of PAH residues in the rockfish, lipid factor did not affect to PAH levels in other organism samples. Activity of 7-ethyoxyresorufin-O-deethylase (EROD), a kind of cytochrome $P_{450}$ enzyme, was measured to evaluate the eliminated amount of PAHs through metabolism. The higher EROD activity in rockfish, compared to that in oyster, was likely to contribute to the lower PAH residues in the rockfish. More factors, such as different exposure history, organisms' ability to escape, ingestion through prey organisms, and post-harvest loss, should be studied in the future.

• Journal of Gastric Cancer
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• v.7 no.2
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• pp.74-81
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• 2007

Purpose: Routine pancreatico-splenectomy with total gastrectomy should no longer be considered as the standard surgical procedure for gastric cancer because of the lack of proven surgical benefit for survival. The aim of this study is to evaluate the clinicopathologic factors and the survival of patients with locally advanced gastric cancer and they had undergone combined pancreatico-splenectomy with a curative intent. Material and Methods: We retrospectively reviewed a total of 118 patients who had undergone total gastrectomy with distal pancreatico-splenectomy from 1990 to 2001. The patients were divided into 2 groups: 90 patients who were free from cancer invasion (group I), and 28 patients with histologically proven cancer invasion into the pancreas (group II). The various clinicopathologic factors that were presumed to influence survival and the survival rates were analyzed. Results: The rate of pathological pancreatic invasion was 23.7%. The tumor stage, depth of invasion, pancreas invasion, lymph node metastasis, lymph node ratio, curability and the hepatic and peritoneal metastasis were statistically significance on univariate analysis. Among these factors, the tumor stage, lymph node ratio and curability were found to be independent prognostic factor on multivariate analysis. The 5-years survival rates were 36.2% for group I and 13.9% for group II. The morbidity rate was 22.1%, and this included pancreatic fistula (5.1%), intra-abdominal abscess (4.2%) and bleeding (4.2%). The overall mortality rate was 0.8%. Conclusion: Combined distal pancreatico-splenectomy with total gastrectomy with a curative intent was selectively indicated for those patients with visible tumor invasion to the pancreas, a difficult complete lymph node dissection around the distal pancreas and spleen, and no evidence of liver metastasis or peritoneal dissemination.

• Journal of Food Hygiene and Safety
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• v.11 no.1
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• pp.25-29
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• 1996

A fucoidanase, which was screened from the heptopancreas of Patinopectin yessoensis, was fractionated according to by ammounium sulfate precipitation and anion exchange chromatography. The crude fucoidanase activity was hydrolyzed a small amounts of fucoidan agar and not arrageenan. The crude enzyme hydrolyzed fucoidan to produce oligosaccha-rides of fucose, glucose, maltose maltotriose and maltoteraose as the reaction products.

• The Science & Technology
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• v.34 no.4 s.383
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• pp.26-27
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• 2001

연세대 의과대학 이현철교수팀은 세계 최초로 당뇨병 인슐린 유전자 치료법을 개발하여 화제를 모으고 있다. 이교수가 개발한 치료법은 제기능을 상실한 췌장 대신 간에서 인슐린을 생산토록 유전자를 조작한 치료법으로 제1당뇨병에 걸린 생쥐를 거부반응이나 부작용없이 100% 치료하는데 성공했다고 한다. 이 치료법이 인체적용에도 성공하면 국내 당뇨병 환자 절반을 완치시킬 수 있다고 한다.

• KOREAN POULTRY JOURNAL
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• v.27 no.9 s.311
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• pp.134-139
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• 1995

수년간 감보로병은 감보로지방에서 처음 발견된 이래로 여러가지 이름으로 불리어졌다. 이 전염병은 양계산업을 주로 위협하며 특히, 악성 바이러스에 걸렸을 때는 더욱 피해가 심하여 양축가에게 경졔적 손실을 가져다 준다. 다행이도 백신의 사용이 가능하여 이 무서운 전염병으로 부터 피해를 예방할 수 있게 되었다. 감보로병은 1962년 미국 델라웨어주의 작은 도시 감보로에서 처음으로 알려졌으며 전염성F낭병 또는 감보로병으로 불리어진다. 원인이 되는 바이러스는 생선(전염성췌장 궤사바이러스)연체동물 및 과일 파리로부터 분리된 것으로 최근에 알려진 비르나버리데군에 속한다.