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SHEN,KAILI; SHEN,CHAOFENG; LU,YUAN; TANG,XIANJIN; ZHANG,CONGKAI; CHEN,XINCAI; SHI,JIYAN; LIN,QI; CHEN,YINGXU. |
The stimulatory effect of low concentrations of toxic chemicals on organismal metabolism, referred to as hormesis, has been found to be common in the widely used luminescence bioassay. This paper aims to study the hormesis phenomenon in both marine and freshwater luminescent bacteria, named Photobacterium phosphorem and Vibrio qinghaiensis. The effects of Cu (II), Zn (II), Cd (II) and Cr (VI) on luminescence of these two bacteria were studied for 0 to 75 minutes exposure by establishing dose- and time-response curves. A clear hormesis phenomenon was observed in all four testing metals at low concentrations under the condition of luminescence assays. |
Tipo: Journal article |
Palavras-chave: Hormesis; Bioluminescence; Q67; T3. |
Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602009000200006 |
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Torlak,V.; Zemunik,T.; Modun,D.; Capkun,V.; Pesutic-Pisac,V.; Markotic,A.; Pavela-Vrancic,M.; Stanicic,A.. |
Therapeutic doses of 131I administered to thyrotoxic patients may cause thyroid failure. The present study used a rat model to determine thyroid function after the administration of different doses of 131I (64-277 µCi). Thirty male Fisher rats in the experimental group and 30 in the control group (untreated) were followed for 6 months. The animals were 4 months old at the beginning of the experiment and were sacrificed at an age of 9 months. Hormone concentration was determined before 131I administration (4-month-old animals) and three times following 131I administration, when the animals were 7, 8, and 9 months old. The thyroid glands were removed and weighed, their volume was determined and histopathological examination was performed at the end of the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Thyroid gland; 131I; Hormones; Histopathology; T3; T4; TSH. |
Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000800009 |
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平本, 典子; 大谷, 昌之; 田辺, 茂之; 宇塚, 雄次; 更科, 孝夫; HIRAMOTO, Noriko; OHTANI, Masayuki; TANABE, Shigeyuki; UZUKA, Yuji; SARASHINA, Takao. |
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Palavras-chave: 子牛; 未経産牛; 硝酸ナトリウム; T4; T3; Calf; Heifer; Sodium nitrate. |
Ano: 2001 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1249 |
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Teama,Fatma Edrees Ibrahim; El-Tarabany,Akram A.. |
ABSTRACT The objective of the present study was to assess the effect of dietary supplementation of Omega-3 plus on some the physiological and biochemical traits in growing Baladi goats under hot summer conditions. Thirty-four growing male goats (4-5 months old) were randomly divided into two equal groups. Animals in group 1 were fed a concentrate feed mixture (CFM), which was the control group. Goats in group 2 (the experimental group) were offered Omega-3 plus (1,000 mg/animal day-1) (30% fish oil, containing 18% eicosapentaenoic acid and 12% docosahexaenoic acid + 100 mg wheat germ oil (0.22% tocopherols)) daily in addition to the basal diet for four months (the experimental period) during the hot summer season. Body weight (BW) changes of both groups... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cholesterol; Heat stress; IgG; Liver enzymes; T3; T4. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000400174 |
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