• 한국동물번식학회:학술대회논문집
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• 한국동물번식학회 2003년도 학술발표대회 발표논문초록집
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• pp.48-48
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• 2003

본 실험은 spermatogonia 단계에 발현하는 유전자를 찾기 위하여 suppression subtractive hybridization를 수행하였다. 기존에 mouse에서는 spermatogonia 특이적인 유전자들이 밝혀져 있기 때문에 pig에 특이적인 유전자를 찾기 위하여 pig 250days testis와 pig 60days testis를 재료로 하여 실험하였다. SSH를 통하여 254days testis에 특이적으로 발현되는 후보유전자를 7개 찾았고 25days testis와 60days testis 의 Northern blot을 통하여 25days에 과발현하고 60days에 발현의 양이 대폭 줄어드는 spermatogonia 유전자로 생각되는 후보유전자 2개를 선택하여 pig tissue northern blot, genomic DNA southern blot, RT-PCR 그리고 In-situ hybridization을 수행하였다. Tissue northern blot과 RT-PCR을 통하여 후보자 1번은 간과 폐, 난소, 정소에서 발현하고, 후보유전자 15번은 난소와 정소에서만 특이적으로 발현함을 알았다. DNA sequence analysis와 NCBI Blast search를 통하여 후보자 1번은 다른 종에서 밝혀진 유전자였고 후보유전자 15번은 어느 종에서도 밝혀지지 않은 새로운 유전자였다. Degenerated primer를 통하여 후보자 1번의 pig full sequence를 밝히고 NCBI에 등록하였다. 그리고 In-situ hybridization을 통하여 후보유전자득이 20일째 testis의 Leydic cell에서 많이 발현되고 adult testis에서는 발현이 감소하는 결과를 얻었다. 이것으로 보아 위의 두 후보유전자는 spermatogonia에 직접 관련된 유전자이기 보다는 spermatogonia의 발달에 영향을 주는 leydic cell 특이발현을 가진 유전자로 사료되어진다.

• 한국동물번식학회:학술대회논문집
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• 한국동물번식학회 2004년도 춘계학술발표대회
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• pp.190-190
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• 2004

Tissue plasminogen activator (tPA) plays important roles in the brain after excitotoxic injury. This study was conducted to produce transgenic pig harboring human tissue plasminogene activator (htPA) gene. Recombinent htPA(rhtPA) genes containing bovine-β-casein promoter (bBC) were prepared for microinjection and testified the expression level of htPA protein from the Chinese hamster ovary (CHO) cell lines before NDA microinjection into the porcine pronuclei. (omitted)

• Journal of Chest Surgery
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• 제41권1호
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• pp.12-24
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• 2008

배경: 최근 조직판막의 구조적 손상에 있어서 동물면역 반응이 중요한 역할을 할 가능성이 제기되면서 동물의 대표적 이종항원 물질인 알파-갈 항원결정인자에 대한 환자의 면역반응에 관한 관심이 높아지고 있다. 또한 알파-갈은 세포 표면에 존재하며 이는 녹색콩 알파-갈락토시다아제 라는 효소를 이용하여 제거할 수 있다고 알려져 있고 조직 표면의 알파-갈 항원결정인자는 Griffonia Simplicifolia의 동종렉틴 중 B4타입에 선택적으로 결합하여 이를 이용해서 염색할 수 있다고 알려져 있다. 이에 본 연구팀은 조직판막을 만드는데 많이 사용되는 돼지의 대동맥 판막 및 심낭 조직을 가지고 녹색콩알파-갈락토시다아제를 이용하여 이들 조직의 알파-갈 항원결정인자를 제거할 수 있는지 알아 보고자하였다. 대상 및 방법: 신선한 돼지의 대동맥 판막 및 심낭 조직을 0.5 unit/mL, 1.0 unit/mL, 2.0 unit/mL 농도의 녹색콩 알파-갈락토시다아제로 pH 6.5, $4^{\circ}C$에서 24시간 처리한 뒤 이를 Griffonia Simplicifolia 동종렉틴 B4 타입을 이용한 면역조직형광염색으로 염색하여, 각각의 농도에서 효소 반응 후 해당 조직의 알파-갈 항원결정인자가 얼마나 제거되는지를 형광염색의 정도로 판단하였다. 결과: 돼지의 대동맥 판막 조직의 경우 1.0 unit/mL농도의 녹색콩 알파-갈락토시다아제를 pH 6.5, $4^{\circ}C$ 에서 24시간 처리하였을 때 형광염색이 거의 되지 않을 정도로 알파-갈 항원결정인자가 제거되었고 이는 효소의 농도를 2.0 unit/mL로 증가시켰을 때에도 비슷한 양상을 보였다. 돼지의 심낭 조직의 경우 효소 처리 전의 알파-갈 염색에서도 대동맥 판막조직에 비하여 많은 양의 형광염색을 보였으며 효소 처리의 농도도 대동맥 판막의 경우보다 높은 2.0 unit/mL의 농도에서 알파-갈 항원결정인자가 제거되는 양상을 보였다. 걸론: 돼지의 대동맥 판막 조직과 심낭 조직의 알파-갈 항원결정인자는 eriffonia simplicifolia의 동종렉틴 B4를 사용한 면역조직형광염색에서 잘 염색되었으며 이를 알파-갈락토시다아제를 사용하여 제거하였을 때 각각 1.0 unit/mL, 2.0 unit/mL 농도의 녹색콩 알파-갈락토시다아제를 $4^{\circ}C$, pH 6.5의 조건에서 24시간 반응시켰을 때 효과적으로 상당량 제거할 수 있었다. 향후 돼지의 판막조직 및 심낭조직으로 만드는 조직판막의 내구성 증대에 대표적인 동물 면역항원인 알파-갈 항원결정인자의 제거가 유용한 도구가 될 수 있을 것이며 앞으로 알파-갈락토시다아제로 처리한 돼지의 조직판막에 대한 인간혈장의 항-갈 항체 및 항-갈 단클론항체를 이용한 직접적인 면역학적 연구가 필요하다.

• Asian-Australasian Journal of Animal Sciences
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• 제11권4호
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• pp.428-433
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• 1998

The effects of chromium picolinate supplementation in pig diet were evaluated by measuring the in vitro lipogenic and lipolytic activities in adipose tissue and the protein synthetic activity in liver acinar cell in culture. Thirty-two male and thirty-two female pigs were randomly assigned to one of four dietary groups: Control, 100 ppb, 200 ppb, and 400 ppb of Cr in the form of picolinate. The chromium picolinate supplementation (p < 0.01) increased the in vitro lipolytic activity in adipose tissue of pig, but had no effects on lipogenesis. The chromium picolinate effect was greater in female pigs than in male pigs on lipolytic activity. The results from the studies with the liver acinar cells in culture indicated that chromium picolinate supplementation increased protein synthetic activity (p < 0.05). It was observed through this experiment that chromium picolinate functions not only on fat degradation but also on retained protein synthesis.

• Asian-Australasian Journal of Animal Sciences
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• 제21권1호
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• pp.11-18
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• 2008

We created a cDNA microarray representing approximately 3,500 pig genes for functional genomic studies. The array elements were selected from 6,494 cDNA clones identified in a large-scale expressed sequence tag (EST) project. These cDNA clones came from normalized and subtracted porcine adipose tissue cDNA libraries. Sequence similarity searches of the 3,426 ESTs represented on the array using BLASTN identified 2,790 (81.4%) as putative human orthologs, with the remainder consisting of "novel" genes or highly divergent orthologs. We used the gene microarray to profile transcripts expressed by adipose tissue of fatty Chinese Xiang pig (XP) and muscley Large White (LW). Microarray analysis of RNA extracted from adipose tissue of fatty XP and muscley LW identified 81 genes that were differently expressed two fold or more. Transcriptional differences of four of these genes, adipocyte fatty acid binding protein (aP2), stearyl-CoA desaturase (SCD), sterol regulatory element binding transcription factor 1 (SREBF1) and lipoprotein lipase (LPL) were confirmed using SYBR Green quantitative RT-PCR technology. Our results showed that high expression of SCD and SREBF1 may be one of the reasons that larger fat deposits are observed in the XP. In addition, our findings also illustrate the potential power of microarrays for understanding the molecular mechanisms of porcine development, disease resistance, nutrition, fertility and production traits.

• Journal of Microbiology and Biotechnology
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• 제13권6호
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• pp.897-905
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• 2003

Phospholipase D (PLD) and ADP-ribosylation factor (ARF) were partially purified on a series of column chromatography, and their biochemical properties were characterized to understand the regulatory mechanism of PLD activation by ARF protein in the antigen-induced immune responses in guinea pigs. Heparin Sepharose and high-Q Sepharose column chromatographies were used for the purification of PLD, and Sephadex G-25, DEAE Sephacel, Source 15 PHE (HIC), Superdex-75, and Uno-Q column chromatographies were used for the purification of ARF. The purified PLD and ARF proteins were identified with anti-rabbit PLD- or ARF-specific antibodies, showing about 64 or 85 kDa for the molecular mass of PLD and 29 or 35 kDa for the sizes of ARF. Partial cDNA of ARF3 was cloned by RT-PCR in guinea pig lung tissue and its nucleotides and amino acids were sequenced. Guinea pig ARF3 showed 92% of nucleotides sequence identity and 100% of amino acid sequence homology with human ARF3. The ARF-regulated PLD activity was measured in the oleate or ARFs-containing mixed lipid vesicles. The purified and recombinant ARF (rARF) activities were assessed with the $GTP{\gamma}S$ binding assay. The PLD activity was induced by oleate in a dose-dependent manner. The purified ARF and recombinant ARF3 increased PLD activity in guinea pig lung tissues. These data show that the activity of membrane-bound PLD can be regulated by the cytosolic ARF proteins, suggesting that ARF proteins in guinea pig lung can act as a regulatory factor in controlling the PLD activity in allergic reaction.

• 한국축산식품학회지
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• 제42권1호
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• pp.186-196
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• 2022

This study investigated the effect of exposure to flutriafol based on residues in pigs. Pigs were exposed to different concentrations (0.313, 0.625, 3.125, 6.25, and 12.5 mg/kg bw/d, n=20) for 4 wk in different treatment groups. Serum biochemical analysis, residue levels, and histological analysis were conducted using the VetTest chemistry analyzer, liquid chromatography mass spectrometry, and Masson's trichrome staining, respectively. The body weight (initial and final) was not significantly different between groups. Parameters such as creatinine, blood urea nitrogen, alanine aminotransferase, and lipase levels were significantly different as compared to the control group. Flutriafol increased the residue limits in individual tissue of the pigs in a dose dependent manner. Flutriafol exposures indicated the presence of fibrosis, as confirmed from Masson's trichrome staining. These results suggest that flutriafol affects the morphology and serum levels in pigs. The dietary flutriafol levels can provide a basis for maximum residue limits and food safety for pork and related products.

• 한국식품영양과학회지
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• 제13권2호
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• pp.149-155
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• 1984

건강식품(健康食品), 보신식품(補身食品)으로 전래되어 오는 돼지머리, 족발, 꼬리 부위의 영양학적(營養學的) 가치를 규명(究明)하기 위한 일환으로 일반성분(一般成分), 수율(收率) 및 열량과 구성 아미노산조성 그리고 무기중(無機質)중 생리적(生理的)으로 열학이 큰 철, 칼슘 및 인과 vitamin A, thiamine 및 riboflavin의 함량에 대하여 실험검토(實驗檢討)하였는데 결과는 다음과 같다. 1. 생시료(生試料)에 있어서 수율(收率)은 머리는 69.4%, 족발은 46.1%, 꼬리는 67.6%이었고, 삶은 시료(試料)의 경우 머리는 54.1%, 족발은 34.3% 및 꼬리는 47.6% 이었다. 2. 열량은 생시료(生試料)의 며리는310.5Cal 족발은288.1Cal, 꼬리는282.5Cal 였으며 삶은시료(試料)의 머리는 295.0 Cal, 족발은 267.4 Cal그리고 꼬리는 253.8 Cal 이었다. 3. 생시료(生試料)와 삶은 시료(試料)의 구성아미노산의 조성(組成) 중 필수(必須) 아미노산은 lysine, leucine, threonine이 높은 함량을 나타내었고 methionine, tryptophan이 가장 낮은 함량을 나타내고 있으며 비필수(非必修) 아미노산은 proline, glycine, glutamic acid 또는 aspartic acid가 전체아미노산의 반이상을 차지하고 있으며 전반적으로 생시료(生試料)나 삶은 시료(試料)에 있어서 조성(組成) 및 함량에 큰 변화를 찾아 볼 수 없었다. 4. 생시료(生試料)의 무기질(無機質)에 있어서 칼슘, 철은 족발이 높은 함량을 보였고 인의 경우 머리가 가장 높았다. 5. Vitamin A는 생시료(生試料)나 삶은 시료(試料) 모두에 함유되지 않았고 thiamine과 riboflavin은 적은 양이 함유되어 있었다.

• Biomolecules & Therapeutics
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• 제3권4호
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• pp.256-259
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• 1995

Antinociceptive and desensitizing effects of systemically administered capsaicinoids (capsaicin and KR25018) were investigated in guinea pig. Nociceptive sensitivity to chemical stimulus was examined to test sensory function, and the content of substance P-like immunorractivity (SP-LI) in bronchi was determined as a peripheral marker of capsaicin-sensitive primary afferent neurons. Guinea pigs were pretreated s.c. with several doses of capsaicin (1,2.5,5, 10 mg/kg) or KR25018 (1, 2.5, 5, 10 mg/kg) one week prior to the experiments. Frequency of eye wiping was significantly decreased by capsaicin and KR25018 in a pretreatment dosedependent manner. In capsaicin- or KR25018-pretreated guinea pigs, there was a significant loss of SP-LI in bronchial tissue extracts. In summary, a newly synthesized capsaicin analogue H725018 exhibited antinociceptive effect against chemical stimulus in guinea pig, with comparable potency to capsaicin. This desensitizing activity of capsaicin or KR25018 might be related to the loss of SP-LI in peripheral afferent nerves.

• 한국멀티미디어학회논문지
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• 제21권1호
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• pp.34-44
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• 2018

An early detection of intravenous (IV) infiltration is essential to minimize the injuries during infusion therapy, which is one of the most important tasks for nurses in nursing settings. We report that bioelectrical impedance analysis is useful in the early detection of infiltration at puncture sites. When infiltration was intentionally induced in the vein of a pig's posterior ear, impedance parameters (R, $X_C$, $C_m$) showed significant differences before and after infiltration. In particular, the relative resistance ($R/R_{BI}$) decreased significantly at infiltration and then slowly decreased. This indicates that the vein in pig's ear is thin and the amount of surrounding subcutaneous tissue, and hence the infiltrated solution accumulates slowly after infiltration. However, when infiltration was induced in the vein of human's forearm, the relative resistance at 20 kHz decreased gradually over time. In the $R-X_C$ graph, the positions in the case of infiltration induced in the pig' ear shifted rapidly before and after infiltration, whereas the positions in the case of infiltration induced in the human's forearm moved gradually during infiltration. Our findings suggest that the impedance parameters (R, $R/R_{BI}$, $X_C$, R vs. $X_C$, and $C_m$) are effective indicators to detect the infiltration early in a non-invasive and quantitative manners.