• 대한수의학회지
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• 제32권3호
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• pp.435-450
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• 1992

To evaluate the fertilizing capacity of domestic animal spermatozoa by hamster test, semen were collected from 15 boars(Duroc, Landrace, and Yorkshire) and 2 mixed dogs which had been proved to be fertile in the past then, the semen were preserved in BWW medium at $4^{\circ}C$ or $18^{\circ}C$ for about 20 hours and coincubated with zona-free hamster ova for 5 hours. The ova were stained by lacmoid and examined under phase contrast microscope to investigate the rates of sperm binding to the ova, penetration and formation of a male pronucleus, and the numbers of both bound and penetrated sperm per ovum. Both the semen preserved at $18^{\circ}C$ for about 20 hours and that treated by swim up procedure showed considerably higher rates of sperm binding and penetration as well as higher number of penetrated sperm than that preserved at $4^{\circ}C$ for about 20 hours, respectively(p<0.01). Motility of boar sperm at insemination was from 40 to 90% and no difference in hamster test was obtained according to different degree of sperm motility. Abnormality in morphology of boar sperm at insemination was from 6 to 45% and no difference in hamster test was obtained according to different degree of sperm abnormality. The sperm concentrations of $7{\times}10^7$ and $7{\times}10^6$ showed considerably higher rates of sperm binding and penetration as well as higher number of bound sperm than that of $7{\times}10^4$ (p<0.01) along with the same higher results than that of $7{\times}10^5$(0<0.05), respectively. Boar sperm showed considerably higher rates of sperm binding and penetration as well as higher numbers of both bound and penetrated sperm than dog sperm, when both semen were treated by BWW＋heparin medium and swim up procedure, respectively. These results indicated that fertile boar sperm showed considerably lower rates in the results of hamster test, when preserved at $4^{\circ}C$ for about 20 hours and in lower concentration of sperm than when preserved at $18^{\circ}C$ for about 20 hours and in higher concentration of sperm, respectively, and at the same time considerably higher results than fertile dog sperm, consequently to prove that hamster test would be of great value in assaying the fertilizing capacity of boar sperm.

• 한국임상수의학회지
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• 제9권2호
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• pp.373-390
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• 1992

To assay the fertilizing capacity of domestic animal spermatozoa by hamster test, semen were collected from 13 boars(Duroc. Landrace and Yorkshire) which had been proved to be fertile in the past. then, were preserved in BWW medium or in raw state at 18$^{\circ}C$ or at room temperature. The preserved semen were given each different treatment according to the experimental design and coincubated with zona-free hamster ova for 5 hours. The ova were stained by lacmoid and examined under phase contrast microscope to investigate the rates of ova bound with sperm(sperm binding). ova penetrated by sperm(penetration) and formation of a male pronucleus(pronucleus formation) and also numbers of both bound and penetrated sperm per ovum. Between BWW and TBM medium for boar sperm. no difference in the results of hamster test was obtained. The boar spermatozoa in BWW medium, BWW with caffeine, BWW with heparin, and BWW with both caffeine and heparin showed no difference in the results of hamster test. The boar spermatozoa in BWW medium containing both calcium and RSA showed considerably higher rates of sperm binding, penetration and pronucleus formation as well as higher numbers of both bound and penetrated sperm than those not containing calcium with or without BSA( p<0.01) and also the same results higher than that containing calcium without BSA( p< 0.05). The boar spermatozoa irradiated by X-ray(70 KVP, 20mA) for 3 seconds. then, maintained at 18$^{\circ}C$ for 18 hours showed considerably lower rate of sperm binding than all the other groups including the control and X-ray groups irradiated by smaller dose or maintained for shorter period(p<0.01), and also showed lower number of bound sperm than the other groups(p<0.01, p<0.05). All the control groups of both raw and diluted sperm in BWM medium showed higher rates of sperm binding, penetration and pronucleus formation as well as higher number of penetrated sperm than all the X-ray groups irradiated for 3 seconds(70KVP, 20mA) and maintained for either 3 or 18 hours (p<0.01, p<0.05). At the same time the control groups of diluted sperm showed considerably higher rates of sperm penetration and pronucleus formation than the control group of raw sperm( p<0.01). These results indicates that fertile boar sperm showed considerably lower rates In the results of hamster test, when incubated in the medium without calcium and irradiated by X-ray than when incubated in the medium with calcium and not irradiated by X-ray, respectively, to prove consequently that hamster test would be of great value in assaying the fertilizing capacity of boar spermatozoa.

• Clinical and Experimental Reproductive Medicine
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• 제18권1호
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• pp.81-87
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• 1991

There studies were carried for evaluation of the efficiency of freezing of hamster oocytes for use in a human sperm penetration assay. The hamster oocytes fully equilibrated in various cryoprotectant agents and inseminated with human sperm. After insemination with hamster oocytes, there was no difference in penetrated rates. Cumulus free oocytes equilibrated in 1.5M various cryoprotective agents and slowely cooled to temperature $-30^{\circ}C$ before rapid cooling and storage in nitrozen tank. After rapid thawing, survival rates of frozen oocytes according to cryo-protective agents were examined and the human sperm penetration assay with zona free hamster oocytes was conducted. 1. Survival rates of oocytes after cryoprotectants exposure have no significant difference (range 88-91%) and peneration rate was 51.1%. 2. Recovery and survival rate of frozen-thawed oocytes were 85.1 and 66.8%. There was no significant difference on cryoprotective agents. 3. Penetration rates of the frozen-thawed and intact oocytes were 69.0 and 77.0%, respectively. 4. Hamster oocytes cryopreservation provides a convenient way of supplying and trans-porting hamster oocytes for the assessment of the fertilizing potential of human spermatozoa.

• 한국가축번식학회지
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• 제5권2호
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• pp.60-65
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• 1981

• 한국식품위생안전성학회지
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• 제16권2호
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• pp.111-116
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• 2001

본 실헐은 P-치약의 햄스터의 구강점막에 대한 자극성을 평가하기 위해 수행되었다. 시험 시작일에 햄스터의 오른쪽 협낭에 P-치약, 죽염치약, 증류수와 대조물질을 각각 적용하고 14일 동안 유지하였다. 점막 자극성을 평가하기 위하여 임상증상, 치사율, 체중 변화와 육안적, 조직병리학적 관찰을 실시하였으나 모든 군에서 사망한 동물이나 체중의 유치적인 변화는 관찰되지 않았으며, 특히 증류수는 처치한 군과 P-치약을 처치한 군의 육안적, 조직병리학적 관찰 소견의 차이가 매우 미미하였다. 이런 결과들을 종합해 보았을 때, P-치약은 햄스터 구강점막에 대한 자극성의 거의 없는 것으로 사료된다.

• 한국식품영양과학회지
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• 제22권5호
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• pp.539-542
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• 1993

화학적 발암제인 DMBA를 이용하여 햄스터 협낭에 암을 유발 시키면서 마늘즙을 투입하여 항암 효과를 연구하기 위해 햄스터의 체중, 협낭의 색조, 모세혈관 분포도를 조사 하였다. 햄스터의 체중 증가는 대조군에 비하여 마늘즙을 복용한 실험군에서 증가량이 현저히 감소 하였는데 1% 마늘즙을 먹인군에 비하여 3% 마늘즙을 먹인군에서 체중증가량이 적었고 협낭의 색조는 3% 투여군은 현저하게 엷은 분홍색을 나타내었지만 대조군은 붉은색을 나타내었다.그리고 협낭의 모세혈관 분포정도는 3% 마늘즙 투여군에서는 경도를 나타내었지만 대조군은 심도를 나타내었다.

• 한국동물학회지
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• 제18권2호
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• pp.71-86
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• 1975

Dwarf hamster의 3가지 染色株를 재료로 trypsin 소화방법에 의한 G-banding pattern을 조사하고 이를 BUdR처리에 의해 凝縮遲延이 일어난 染色體의 G-bnad 와 比較한 결과는 다음과 같다. 1. Chinese hamster의 T-233 細胞에서는 65개의 G-band가 觀察되었다. 中心粒部位의 짙은 band가 第 1染色體에서, 엷은 band는 第 2, 3, 8과 $X_2$染色體에서 보였다. 두 X-染色體도 서로 다른 banding pattern을 보였으며, 染色體 末端의 짙은 band는 第 1染色體에서만 발견되었다. 그리고 第 10染色體에서는 band가 보이지 않는 것이 특징이었다. 2. Armenian hamster의 Y-1249細胞에서는 84개의 band가 觀察되었다. 中心粒部位의 짙은 band는 第 5와 10 染色體에서 보엿으며 第 7과 9染色體의 long arm 의 中心粒 가까운 데서도 중간정도의 染色性을 띤 band가 있음을 보았다. 두 X 染色體도 서로 다른 banding pattern으로 식별할 수 있었다. 3. Armenian hamster의 Y-1313細胞에서는 69개의 band가 보였다. 여기서 는 中心粒部位의 짙은 band는 觀察할 수 없었으나 중간정도의 band가 第 9 染色體의 long arm쪽에서만 나타났다. Armenian hamster의 두 細胞株는 서로 다른 banding pattern으로 쉽게 이 둘을 식별할 수 있었으며 단지 第 8 染色體만이 비슷한 banding을 보일 뿐이다. 第 5, 7, 8染色體들은 같은 수의 band를 보이고 있으나 그 위치나 染色强度는 相異하였다. 4. Chinese hamster의 T-233細胞의 第 1, 2, 6, $X_1$, $X_2$ 染色體와 Armenian hamster의 Y-1249, Y-1313en 細胞의 第 1, 4, 5, 7, 8, 9, $X_1$, $X_2$ 染色體들은 BudR에 의한 分裂凝縮의 억제로 染色體들이 伸張되어 있는데 이들 染色體의 G-banding pattern도 正常인 染色體의 G-banding pattern과 동일함을 觀察하였다.

• 한국식품영양과학회지
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• 제23권1호
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• pp.44-47
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• 1994

Anticarcinogenic effects of garlic juice were studied in hamsters exposed to 9,10-dimethyl-1, 2-benzan-thracene in their buccal pouches. The distribution of nodule quantity and size was recorded among different groups of hamster. The results show that nodule formation was suppressed in hamsters which were fed with garlic juice compared to hamsters which were not. The average nodule volume was 81.10㎣ for hamsters fed with 3% garlic juice and 181.26㎣ for hamsters without garlic in their diet after 90 days of treatment.

• 한국환경성돌연변이발암원학회지
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• 제21권1호
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• pp.44-50
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• 2001

To identify nongenotoxic carcinogen determined as negative by ICH guideline-recommended standard genotoxicity test battery; Ames test, chromosome aberration assay, mouse lymphoma $tk^{+/-}$ assay, in vivo micronucleus assay, we picked bisphenol A as a model compound. In this study, we applied in vitro BalB/c 3T3 cell transformation assay and Syrian hamster embryo (SHE) cell transfarmation assay. Bisphenol A was treated upto $769.2 ug/m{\ell}$ in BalB/c 3T3 cells and upto $125 ug/m{\ell}$ in SHE cells. bisphenol A didn't induced morphological transformation both with one stage treatment protocol and with two stage treatment protocol. But, treated far 48 hr, Bisphenol A induced morphological transformation significantly in SHE cells.

• 한국동물학회지
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• 제17권1호
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• pp.37-42
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• 1974

Chinese hamster, Cricetulus griseus 와 Armenian hamster, Cricetulus migratorius의 正常細胞, 腫瘍瘤에서 由來된 細胞 및 바이러스로 再形質轉換된 細胞의 乳酸데히드로게나제(LDH) 패턴을 電氣永動法에 의해 測定하여 比較하였다. 이 두 종류의 電基泳動移動度는 비슷했으며, 纖維芽細胞는 LDH-5만 나타내었고, adenovirus로 形質轉換된 上皮性인 細胞에서는 LDH-1-2-3-4-5, 2-3-4-5, 또는 3-4-5와 같은 패턴을 보여 주었다. 그러나 上皮性細胞가 自然的으로, 혹은 SV40 바이러스 處理로 因해서 纖維芽細胞로 변하였을 경우는 역시 LDH-5 패턴만 보여 주었다.