Journals / Ege Tıp Dergisi / 2005 / Cilt: 44 - Sayı: 2

Antioxidant enzyme activities and lipid peroxidation levels in andolescent rat brain

Adölesan sıçan beyninde antioksidan enzim aktiviteleri ve lipid peroksidasyon düzeyleri

Pages
75–79
DOI
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⚡ TL;DR(Too Long; Didn't Read)

These results suggest that prefrontal cortex and hippocampus of adolescent rats may be more defenseless to oxidative stress, compared to other ages.

📌 3 Key Takeaways

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Objective & Hypothesis:It is known that adolescent is a period in which symptoms moot disorders such as anxiety and depression or psychoses such as schizaprenia or behavioral abnormalities/such as drug abuse mostly emerge in the individual.
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Key Findings & Data:In adolescence, dopamine metabolism increases in prefrontal corteks and hippocampus, while it decreases in striatum.
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Conclusion & Impact:These results suggest that prefrontal cortex and hippocampus of adolescent rats may be more defenseless to oxidative stress, compared to other ages.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Modeller · hayvan · Süperoksit dismutaz

Abstract

It is known that adolescent is a period in which symptoms moot disorders such as anxiety and depression or psychoses such as schizaprenia or behavioral abnormalities/such as drug abuse mostly emerge in the individual. Adolescent brain differ frompre and post adolescence in regard to neurotransmitter systems such as the dopaminergic system, as well as in organization and function. In adolescence, dopamine metabolism increases in prefrontal corteks and hippocampus, while it decreases in striatum. Increased metabolism of dopamine may evoke an oxidative stress derived from increased production of reactive oxygen species. The present study was designed to determine the superoxide dismutase and glutathione peroxidase enzyme activities and thiobarbituric acid reactive substances levels, an indicator of lipid peroxidation, in prefrontal cortex, hippocampus and striatum of 21 days old (pre-adolescents), 38 day old (adolescent) and 6 months old (post-adolescents) rats. We demonstrated that superoxide dismutase activity and thiobarbituric acid reactive substances levels increased in, but glutathione peroxidase activity decreased in prefrontal cortex and hippocampus of adolescent rats compared with other ages. In striatum, superoxide dismutase activity and thiobarbituric acid reactive substances levels decreased in adolescents compared with pre and post-adolescents. These results suggest that prefrontal cortex and hippocampus of adolescent rats may be more defenseless to oxidative stress, compared to other ages.

Özet

Şizofreni, madde bağımlılığı, anksiyete, depresyon gibi pek çok hastalığın adölesans döneminde ortaya çıktığı bilinmektedir. Adölesans beyni nörotransmitter sistem, dopaminerjik sistem, yapı ve fonksiyonu bakımından adölesandan önceki ve sonraki dönemden farklıdır. Adölesans döneminde prefrontal korteks ve hipokampusta dopamin metabolizması artarken striatumda azalır. Dopamin metabolizmasındaki artış reaktif oksijen türlerinde artışa neden olarak oksidatif stresi tetikleyebilir. Bu çalışmanın amacı adölesan öncesi, adölesan ve erişkin sıçan prefrontal korteks, striatum ve hipokampusunda süperoksit dismutaz, glutatyon peroksidaz enzim aktiviteleriyle lipit peroksidasyon göstergesi olan tiyobarbitürik asitle reaksiyona giren maddelerin düzeylerinin araştırılmasıdır. Çalışmada 21 günlük (adölesan öncesi), 38 günlük (adölesan) ve 6 aylık (adölesan sonrası) sıçanlar kullanılmıştır. Bu çalışmada adölesan sıçanların prefrontal korteks ve hipokampusunda süperoksit dismutaz enzim aktivitesi ve tiyobarbitürik asitle reaksiyona giren maddelerin düzeyleri artarken glutatyon peroksidaz aktivitesinin azalmış olduğu görüldü. Adölesan striatumunda ise süperoksit dismutaz enzim aktivitelerinin ve tiyobarbitürik asitle reaksiyona giren maddelerin düzeylerinin düşük olduğu saptanmıştır. Bu sonuçlar, adölesan sıçan beyninde prefrontal korteks ve hipokampus bölgelerinin diğer dönemlere göre oksidan strese karşı daha savunmasız olduğunu düşündürmektedir.

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Cite This Article

UYSAL, N., GÖNENÇ, S., SÖNMEZ, A., AKSU, İ., TOPÇU, A., KAYATEKİN, B. M., AÇIKGÖZ, O. (2005). Antioxidant enzyme activities and lipid peroxidation levels in andolescent rat brain. Ege Tıp Dergisi, Cilt: 44 - Sayı: 2, 75–79. https://ajindex.com/articles/222947

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References (15)

  1. D. Rice and B.J. Stan, Critical periods of vulnerability for the developing nervous system: Evidence from humans and animal models. Environ. Health Perspect. 2000; 108: 511-533
  2. Spear LP. The adolescent brain and age-related behavioral manifestations. Neurosci and Biobehav Rev 2000; 24: 417–463
  3. Graber JA, Petersen AC. Cognitive changes in adolescence: biological perspectives. In: Gibson KR, Petersen AC (eds), Brain maturation and cognitive development: comparative and cross cultural perspectives, New York, 1991
  4. James D. Belluzzi, Alex G. Lee, Heather S. Oliff, et al. Age-dependent effects of nicotine on locomotor activity and conditioned place preference in rats. Psychopharmacology 2004; 174: 389-395 5. Spear LP, Brake SC. Periadolescence: age-dependent behavior and psychopharmacological responsivity in rats. Dev Psychobiol 1983; 16: 83–109
  5. Diamond A. Evidence for the importance of dopamine for prefrontal cortex functions early in life. Philos Trans R Soc Lond B Biol Sci 1996; 351: 1483-1493
  6. Teicher MH, Andersen SL, Hostetter JCJr. Evidence for dopamine receptor pruning between adolescence and adulthood in striatum but not nucleus accumbens. Dev Brain Res 1995; 89: 167-172
  7. Wolfer DP, Lipp HP. Evidence for physiological growth of hippocampal mossy fiber collaterals in the guinea pig during puberty and adulthood. Hippocampus 1995; 5: 329-40
  8. Halliwell B. Reactive oxygen species and the central nervous system. J Neurochem 1992; 59: 1609-1623
  9. Gaunt GL, de Duve C. Subcellular distribution of D-amino acid oxidase and catalase in rat brain. J Neurochem 1976; 26: 749-59
  10. Sinet PM, Heikkila RE, Cohen G. Hydrogen peroxide production by rat brain in vivo. J Neurochem 1980; 34: 1421-1428
  11. Kalsbeek A, Voorn P, Buijs RM, et al. Development of the dopaminergic innervation in the prefrontal cortex of the rat. J Comp Neurol 1988; 269: 58-72
  12. Graham, DG. Oxidative pathways for catecolamines in the genesis of neuromelanin and cytotoxic quinones. Mol Pharmacol 1978; 14: 633-643
  13. Carrillo MC, Kanai S, Nokubo M, Kitani K.(-)deprenyl induces activities of both superoxide dismutase and catalase but not of glutathione peroxidase in the striatum of young male rats. Life Sci 1991; 48: 517-521
  14. Paglia, De, Valentine, WN. Studies on the quantitative and qualitative characterization of erythrocyte glutathione peroxidase. J Lab Clin Med 1967; 70: 158-169,
  15. Rehncrona S, Smith DS, Akesson B, et al. Peroxidative changes in brain cor