• Title/Summary/Keyword: rodents

Search Result 334, Processing Time 0.024 seconds

Effects of Cadmium on Renal Function and Renin-angiotensin-aldosterone system in NaCl-Loaded Rats

  • Kim, Yung-Kyu
    • Proceedings of the Korean Society of Toxicology Conference
    • /
    • 2001.05a
    • /
    • pp.155-155
    • /
    • 2001
  • Acute cadmium exposure has been shown to increase sodium reabsorption in kidney through increase in aldosterone secretion in human and rodents. However, the antinatriuresis is not completely explained by hyperaldosteronism. Moreover, it is still controversial that the increase in plasma aldosterone concentration is mediated by the renin-angiotensin-aldosterone system(RAAS).(omitted)

  • PDF

Solubilization of bromadiolone in humic acid pseudomicellar media

  • Prakash, John
    • Advances in environmental research
    • /
    • v.1 no.3
    • /
    • pp.211-221
    • /
    • 2012
  • Bromadiolone (BRD), a second generation anticoagulant often applied to the living environment to control rodents, is usually considered to have low environmental toxicity due to its poor solubility in water. In this study of the effect of humic acid (HA) on BRD using electronic absorption spectroscopy, it has been observed that BRD is appreciably solubilized even in low concentrations of aqueous HA solutions. The BRD solubilization efficiency of aqueous HA was found to be $2.39{\pm}0.14$ ($4.53{\pm}0.26{\mu}M\;ppm^{-1}$). It was also seen that BRD is reasonably solubilized in aqueous extract of farm soil.

Systematic Studies of Korean Rodents : IV. Morphometric and Chromosomal Analyses of two Species of the Genus Apodemus (Muridae) (한국산 설치류의 계통분류학적 연구 : 4. 붉은쥐 속 2종의 염색체 및 형태적 형질 의 분석)

  • 고흥선
    • Animal Systematics, Evolution and Diversity
    • /
    • v.4 no.2
    • /
    • pp.103-120
    • /
    • 1988
  • 한국에 서식하고 있는 붉은쥐속 2 종, 등줄쥐(Apodemus agrarius coreae, A. agrarius chejuensis)와 흰넓적다리 붉은쥐 (A. peninsulae peninsulae)의 염색체 및 형태적 형질의 분석을 하였다. A. agrasius coreae는 작은 형이고, A. agrarius chejuensis 와 A .peninsulae peninsulae 는 큰 형이었다. 또한A. agrarius chejuensis 는 A.peninsule peninsulae 보다도 큰 편이었다. A.peninsulae peninsulae 에 있는 B chromosomes 은 C.-negative 즉 진정염색질임이 밝혀졌다.

  • PDF

Reduction of Dioxin-Induced Expression of cyplal Gene through Repression of AhR/Arnt DNA Binding by Mek-1 inhibitor PD98059

  • Park, Hyunsung
    • Proceedings of the Korean Society of Toxicology Conference
    • /
    • 2002.11b
    • /
    • pp.60-66
    • /
    • 2002
  • Aryl hydrocarbons, environmental contaminants accumulate in tissue and pose potential risk in human health. 2,3,7,8-Tertachlorodibenzo-p-dioxin (TCDD) is known as a most potent toxicant among aryl hydrocarbons. TCDD elicits numerous toxic responses in experimental animals and human, including hepatic carcinoma, pulmonary and skin tumor in adult rodents, craniofacial abnormality during mouse embryogenesis, chloracne, reproductive abnormality, immunotoxicity, endocrine effects in exposed humans.(omitted)

  • PDF

Current Status of Pest Management and Biodiversity in Organic Pear Orchards in Korea (배 유기재배 과수원의 병해충 관리 실태 및 생물 다양성)

  • Song, Jang-Hoon;Lim, Kyeong-Ho;Cho, Young-Sik;Lee, Han-Chan
    • Korean Journal of Organic Agriculture
    • /
    • v.21 no.4
    • /
    • pp.617-627
    • /
    • 2013
  • This study was conducted to survey the current pest occurrence and grower's pest management practices, and to investigate biodiversity including birds, snakes, rodents, and amphibians in organic pear orchards. From the questionnaires and field survey of 22 organic orchards in 2010, the materials such as lime sulphur, plant extracts and their mixtures with microorganisms, and oils were preferred over insecticides. Scab, mealybugs, woollybugs and barkminers were the major pests for organic pear growers. Environment-friendly fungicides and insecticides were applied 9 to 10 and 5 to 6 times respectively. Incidence and severity of scab on Niitaka pear fruits in organic orchards was higher than in conventional ones. Whereas for mealybugs there was no significant difference between organic and conventional orchards. Pear fruits in organic orchards were significantly smaller than those of non-organic orchards. For the biodiversity of amphibians, snakes, pheasants, and rodents, there was no significant difference between organic and conventional orchards, but Rufous turtle doves were monitored more in organic areas than in conventional ones.