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Registros recuperados: 3
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131I-induced changes in rat thyroid gland function BJMBR
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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Behavioral characteristics of the offspring of adolescent rats BJMBR
Zemunik,T.; Peruzovic,M.; Capkun,V.; Milkovic,K..
The aim of this study was to test the hypothesis that, during adulthood, the offspring of adolescent rats differ in emotionality, learning and memory from the offspring of adult rats. The behavior of the offspring of adolescent (age, 50-55 days) and adult rats (age, 90-95 days) was tested in the open field, activity cage, and passive and active avoidance apparatus. The latencies during training and testing in the passive avoidance apparatus of the offspring of adolescent parents were shorter than the latencies of control offspring (P<0.001 on both training and testing days). Offspring of adolescent parents showed shorter latency time in acquisition trials during active avoidance testing compared to control offspring (P<0.001). They also showed a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adolescence; Pregnancy; Behavior; Learning and memory; Emotionality.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000400008
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Reproductive ability of pubertal male and female rats BJMBR
Zemunik,T.; Peruzovic,M.; Capkun,V.; Zekan,L.; Tomic,S.; Milkovic,K..
Ten Fisher rats 50 to 55 days of age made up the pubertal group, and ten rats 90 to 95 days of age served as the controls. The testicular and epididymal weights and volumes of the pubertal males were lower than those of the controls (P<0.001). There was also a difference in relative epididymal weight (P<0.001). The sperm of pubertal males was morphologically abnormal in 58.2% of cases, as opposed to only 3.8% in the controls (P<0.001). The mean number of spermatozoa in the control group was 11.9 × 10(6)/ml and their viability was 99.6%, while these values could not be determined for pubertal rats. Serum testosterone was higher in the pubertal animals than in the controls (2.52 ± 1.46 vs 0.92 ± 0.34 nM, P<0.01). The ovaries of control females...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Puberty; Reproduction; Gonads; Sex hormones; Pregnancy.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000700007
Registros recuperados: 3
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