• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 1993년도 제2회 신약개발 연구발표회 초록집
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• pp.79-79
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• 1993

BALB/C mice 에게 FVA를 감염시킨 후, zidobudine을 1 mg/ml 의 농도로 식수에 용해하여 18일 동안 자유롭게 섭취 시켰을때 (150-200 mg/kg/day) 비장비대가 90% 억제되었고, 혈액 중 reverse transcriptase 활성은 85%로 억제효과를 나타내었으며, 빈혈지수는 회복되는 경향을 나타내었다. 한편, ddI 는 AZT와 동일 용량에서 비장비대는 17%, 혈액 중 reverse transcriptase 억제효과는 34% 억제효과를 나타내었다. 반면에 ddC는 단독투여시 비장비대를 38% 억제하였으며, interferon $\alpha$와 병용투여시 83%의 억제효과를 나타내었다. 이상은 FVA 감염에 의한 mice의 비장비대를 지표로 하여 reverse transcriptase의 억제효과를 지닌 항 AIDS약물의 약효검색법으로 활용할 수 있음을 제시해준다.

• 한국동물학회:학술대회논문집
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• 한국동물학회 1996년도 공동 춘계학술대회
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• pp.55.1-55
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• 1996

No Abstract, See Full Text

• 한국식품과학회지
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• 제38권2호
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• pp.273-278
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• 2006

본 연구는 식이지방(우지, 잇꽃유)을 급여한 마우스에게 토마토가 면역활성에 미치는 영향을 평가하기 위하여 수행하였다. AIN-76 diet에 포화지방(beef tallow)과 불포화지방(safflower oil)을 각각 5%씩 중량비로 혼합한 식이를 대조군으로 하였고, 실험군은 토마토(수분함량, 95%)를 고려하여 건물기준으로 0.5%를 첨가한 실험식이를 제조하여 BALB/c 마우스에게 10주 동안 급여하였다. 지연성 과민반응검사는 4, 7, 10주에, 항체생산 세포수측 정은 7, 10주에 실시하였다. 혈액은 심장천자(heart puncture)로 채취하였으며 저장된 혈청은 양적혈구(SRBC)에 대한 적혈구응집소가측정(AGG test)에 이용하였다. 각각의 장기는 적출하여 칭량하였고, DTH test후 적출한 비장을 대상으로 세포조직학적 검사를 실시하였다. 토마토군은 대조군에 비해 4주와 10주의 비장계수(spleen index)와 흉선계수(thymus index)가 통계적으로 높았다(p<0.05). 양적혈구에 대한 지연성 과민반응검사에서 토마토군은 4주, 7주, 10주 모두 24시간의 반응값이 대조군 보다 통계적으로 유의하게 높았다(p<0.05). 토마토군은 3시간은 7주, 24시간은 4주, 48시간은 4주와 10주에서 대조군에 비해 통계적인 유의성이 있었다(p<0.05). 항체생산 세포수는 식이급여 7주에 토마토군이 대조군보다 통계적인 차이가 나타난 반면 10주는 차이가 없었다. 양적혈구에 대한 응집소가는 식이의 급여기간이 길어질수록 감소하였는데, 토마토군이 대조군에 비해서 특히 10주의 응집소가는 유의성이 있었다. 임파구(Iymphocyte)는 토마토군이 대조군보다 다소 증가하였고, 비장조직 검사결과 토마토군은 백색수(white pulp)가 심하게 증식되어 활발한 면역반응을 보였다.

• Asian-Australasian Journal of Animal Sciences
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• 제26권4호
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• pp.545-551
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• 2013

This study aimed to present a mouse model of ovalbumin (OVA) induced allergic diarrhea under a sub-barrier system and investigate the development of gut microbiota in this model. Male BALB/c mice were systemically sensitized with OVA or sham-sensitized with saline, and followed by oral OVA intubation, leading to OVA-specific acute diarrhea. Compared with sham-sensitized mice, sera OVA-specific IgG1 and total IgE in OVA-sensitized mice were dramatically elevated, and the number of mast cells was greatly increased in the jejunum of the OVA-sensitized mice. Principle component analysis of the DGGE profile showed that samples from group of OVA-sensitized mice and group of sham-sensitized mice were scattered into two different regions. Real-time PCR analysis showed that the number of 16S rRNA gene copies of Lactobacillus in the colon of OVA-sensitized mice decreased significantly, while there was no significant difference in the number of Bifidobacterium and total bacteria. In conclusion, OVA-specific allergic diarrhea was successfully induced under a sub-barrier system, and changes of allergic reactions during induction was coupled with changes in gut microbiota, especially the number of colonic Lactobacillus, but the role of gut microbiota in the development of food allergic reactions needs to be further evaluated.

• Parasites, Hosts and Diseases
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• 제42권2호
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• pp.51-56
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• 2004

Susceptibilities of 5 different mice strains, including C3H/HeN, BALB/c, C57BL6, FvB and ICR, to Echinostoma hortense infection, was evaluated. The worm expulsion rate, worm size and egg production were observed from 1 to 8 weeks after infection with 30 metacercariae. C3H/HeN and ICR mice showed the highest worm maturation rates. The worm recovery rate and the number of eggs per gram (EPG) of feces was also higher in C3H/HeN and ICR mice than in BALB/c, C57BL6, and FvB mice. It is suggested that E. hortense is highly infectious to ICR and C3H/HeN mice, but not to the other strains of mice. Based on the results obtained, we believe that the susceptibility of different mouse strains to E. hortense infection is dependent on the genetic and immunologic back-ground of mice.

• Archives of Pharmacal Research
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• 제26권11호
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• pp.943-950
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• 2003

In the present studies, the acute toxic effects of 2-bromopropane (2-BP) and its analog, 1,2-dibromopropane (1,2-DBP), were investigated in female BALB/c mice. The mice were treated orally with either 2-BP at 2000 and 4000 mg/kg or 1,2-DBP at 300 and 600 mg/kg. Four days before necropsy, the mice were immunized intraperitoneally with sheep red blood cells (SRBCs). 1,2-DBP reduced the weights of the spleen and thymus weights and decreased the number of splenic cells. In addition, treatment with 1,2-DBP suppressed the antibody response to SRBCs. Meanwhile, only the antibody response was significantly suppressed by treatment with 2-BP. In the subsequent studies, the time course effects of 2-BP and 1 ,2-DBP on the hepatotoxic parameters were compared in female BALB/c mice. When mice were treated orally with either one of these chemicals for 6, 12, 24 and 48 h, the activities of serum alanine aminotransferase and aspartate aminotransferase elevated significantly only with 1,2-DBP 24 h after the treatment. The hepatic content of glutathione was reduced by 1,2-DBP. Meanwhile, these parameters were increased by 2-BP. The present results suggest that 1,2-DBP in the Solvent 5200 also contributes to the immnunotoxicity, although 2-BP is a major component.

• Toxicological Research
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• 제20권4호
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• pp.329-337
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• 2004

Primiphos-methyl and methidathion as organophosphorus (OP) pesticides were tested for their immunotoxic effects on Balb/c mice. Three dose levels of primiphos-methyl (10, 60, or 120 mg/kg/day) and methidathion (0.5, 2.5 or 5.0 mg/kg/day) were administered orally in the mice for 4 weeks. After, changes in body weight gain, relative weight of spleen and thymus, viable splenic cell numbers, surface marker on immune cell, and proliferation activity were investigated. Results showed that neither Pirimiphos-methyl nor methidathion dosages changed significantly body weight, relative thymus and spleen weight, and thymus and spleen cellularities of the mice, but high dose treatment (120 mg/kg) of pirimiphos-methyl significantly decreased relative spleen weight and spleen cellularity of the mice. No alterations were observed in changes of LPS-proliferation response of splenocytes by exposure to any dose of pirimiphos-methyl and methidathion. However, pirimiphos-methyl dosages reduced ConA-proliferation response of splenocytes and both methidathion and pirimiphos-methyl decreased the ability of antibody production to SRBC. The results indicate that 28 days exposure to the high dose of pirimiphos-methyl suppress the function of splenic T and B cell function, and methidathion reduce the immune responsibility of B cell in mice without the changes in lymphoid organ weight or viability of splenocytes. Pirimiphos-methyl is more immunotoxic than methidathion although this has higher general toxicity than that.

• Parasites, Hosts and Diseases
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• 제61권4호
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• pp.418-427
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• 2023

Toxoplasma gondii infections are primarily diagnosed by serological assays, whereas molecular and fluorescence-based techniques are garnering attention for their high sensitivity in detecting these infections. Nevertheless, each detection method has its limitations. The toxoplasmosis detection capabilities of most of the currently available methods have not been evaluated under identical experimental conditions. This study aimed to assess the diagnostic potential of enzyme-linked immunosorbent assay (ELISA), real-time polymerase chain reaction (RT-PCR), immunohistochemistry (IHC), and immunofluorescence (IF) in BALB/c mice experimentally infected with various doses of T. gondii ME49. The detection of toxoplasmosis from sera and brain tissues was markedly enhanced in mice subjected to high infection doses (200 and 300 cysts) compared to those subjected to lower doses (10 and 50 cysts) for all the detection methods. Additionally, increased B1 gene expression levels and cyst sizes were observed in the brain tissues of the mice. Importantly, IHC, IF, and ELISA, but not RT-PCR, successfully detected T. gondii infections at the lowest infection dose (10 cysts) in the brain. These findings may prove beneficial while designing experimental methodologies for detecting T. gondii infections in mice.

• 대한본초학회지
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• 제23권2호
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• pp.51-58
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• 2008

Objectives : Trimellitic anhydride (TMA), a sensitizer that induces occupational asthma and atopic dermatitis, is widely used industrially to make epoxy and alkyd resins, plasticizers, high temperature polymer, and surfactants. The aim of this study was to investigative the effects of aqueous extracts of Lonicera japonica Flower(LJFAE) on TMA-induced contact hypersensitivity (CHS) in Balb/c mice. Methods : The dried flowers of L. japonica were extracted with distilled water at $100^{\circ}C$ for 7 h. The extract was freeze-dried following filteration through 0.45 ${\mu}m$ filter. Mice were orally administrated with or without LJFE of a different doses(25-100 mg/kg) for 28 days. In the challenge period, mice were externally applied at difference doses of LJFAE one time per day 30 min before TMA treatment. We examined the effects of LJFAE on the the serum levels of IgE and prostagladin E2 (PGE2), the Thl/Th2 cytokine production of spleen cells, ear swelling responses, and the leukocyte infiltration induced by TMA. Results : The orally and externally administration of LJFAE dose-dependently reduced the serum levels of IgE and PGE2 production as well as ear swelling responses and leukocyte infiltration in TMA-induced Balb/c mice. Furthermore, the levels of Thl (TNF-${\alpha}$, IFN-${\gammer}$, IL-2)/Th2 (IL-4, IL-5, IL-13) cytokine production from spleen cells stimulated with anti-CD3 and CD28 mAbs was markedly suppressed by the orally and externally treatment with LJFAE in a concentration dependent manner. Conclusions : These results suggest that LJFAE suppresses the inflammatory mediators and regulates the Thl/Th2 cytokines. Therefore, these properties may contribute to the strong anti-CHS response effect of LJFAE.

• Journal of Genetic Medicine
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• 제2권1호
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• pp.31-34
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• 1998

The N-methylpurine-DNA glycosylase (MPG), a ubiquitous DNA repair enzyme, removes N-methylpurine and other damaged purines induced in DNA. Tissue-specific mRNA levels of the N-methylpurine-DNA glycosylase (MPG) were investigated in Balb/c mice of four different growing stages; newborn, 1, 4 and 8-weeks postpartum. MPG expressions in the newborn and the 8-week-old mice were the highest in thymus and testis, respectively. The tested tissues of the newborn mice had consistently higher MPG mRNA level than 8-week-old adults except in testis and thymus. The MPG mRNA level in testis was the lowest in the newborn mice, but it attained the highest in the 8-week-old mice. The levels of MPG mRNA among the different tissues in the newborn and the 8-week-old mice were more than 9.0 and 19.0-fold respectively. These results suggest that the of MPG expression was dependent on the growing stage and had tissue-specificity.