Journals / Nöropsikiyatri Arşivi / 2012 / Cilt: 49 - Sayı: 4

The effects of social ısolation in standard and enriched physical environments on the adult emotional behavior of rats administered with MK-801 during the early developmental stage

Erken gelişim doneminde MK-801 uygulanan sıcanlarda, standart ve zengin cevrede oluşturulan sosyal izolasyonun yetişkinin duygusal davranışları uzerine etkileri

Pages
248–254
DOI
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Conclusion: In conclusion, growth under enriched physical environmental conditions provides protection against both adulthood anxieties arising from NMDA receptor hypofunction in early childhood and emotional and behavioral abnormalities related to novel stimuli. (Archives of Neuropsychiatry 2012; 49: 248-254)

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Objective & Hypothesis:Objective: The present study was aimed at the investigation of the effects of chronic N-methyl-D-aspartate (NMDA) receptor blockade applied during the late stage of brain maturation (days 20-30 after birth) and physical environment on affective behaviors during adulthood in socially isolated rats.
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Key Findings & Data:Methods: In order to establish a social isolation model, the experimental animals were kept in individual cages, starting from 21 days of age till adulthood.
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Conclusion & Impact:Conclusion: In conclusion, growth under enriched physical environmental conditions provides protection against both adulthood anxieties arising from NMDA receptor hypofunction in early childhood and emotional and behavioral abnormalities related to novel stimuli. (Archives of Neuropsychiatry 2012; 49: 248-254)
🔬Design:Lab & Field Experiment
📍Scope:2012 Verileri
⚙️Variables:Domain Parameters

Abstract

Objective: The present study was aimed at the investigation of the effects of chronic N-methyl-D-aspartate (NMDA) receptor blockade applied during the late stage of brain maturation (days 20-30 after birth) and physical environment on affective behaviors during adulthood in socially isolated rats. Methods: In order to establish a social isolation model, the experimental animals were kept in individual cages, starting from 21 days of age till adulthood. The socially isolated rats, which were reared under standard and enriched environmental conditions, were administered with MK-801 (between days 20-30 after birth for a period of 10 days at a dose of 0.25 mg/kg body weight, twice a day, by subcutaneous route). As from 3 months of age, the behavior of the adult rats was assessed using the open-field test, light-dark preference test and the elevated plus-maze test. Results: In the open-field test, it was observed that the frequency of rearing, considered as exploratory behavior, has increased significantly in the group administered with physiological saline and isolated under enriched physical environmental conditions compared to the group isolated under standard physical environmental conditions (p<0.01). In the elevated plus-maze test, the duration of the period the animals remained in the open arm has shortened in the group, which was administered with physiological saline and isolated under enriched physical environmental conditions in comparison to the animals exposed to standard physical environmental conditions (p<0.01). Compared to the group given physiological saline, in the group administered with MK-801 and reared in a standard physical environment, a significant decrease was observed in the same parameter (p<0,05). Conclusion: In conclusion, growth under enriched physical environmental conditions provides protection against both adulthood anxieties arising from NMDA receptor hypofunction in early childhood and emotional and behavioral abnormalities related to novel stimuli. (Archives of Neuropsychiatry 2012; 49: 248-254)

Özet

Amaç: Bu çalışmada, sosyal izolasyonlu sıçanlarda beynin son olgunlaşma döneminde (20-30.günlerde) uygulanan kronik NMDA reseptör blokajı ve zengin fizik çevrenin yetişkin dönem duygusal davranışları üzerine etkileri araştırılmıştır. Yöntem: Sosyal izolasyon modeli oluşturmak için denekler 21. günden yetişkin döneme kadar tekli kafeslerde barındırılmıştır. Sosyal izolasyon koşullarında, standart ve zengin fizik çevrede yetişen sıçanlara, MK-801enjeksiyonu uygulanmıştır (doğumdan sonra 20-30. günler arasında 10 gün süre ile 0,25 mg/kg vücut ağırlığı, günde iki kez, subkütan). 3 ayını dolduran yetişkin sıçanların davranışları açık alan, aydınlık-karanlık tercih ve yükseltilmiş artı düzenek testleri ile değerlendirilmiştir. Bulgular: Açık alan testine araştırmacı davranış olan serbest ayağa kalkma sıklığında, serum fizyolojik uygulanan zengin fizik çevre grubunda standart çevreye göre anlamlı artış görülmüştür (p<0,01). Yükseltilmiş artı düzenek testinde, açık kolda kalış süresi serum fizyolojik uygulanan zengin fizik çevre grubunda standart fizik çevre grubuna göre azalma göstermiştir (p<0,01) Aynı ölçütte MK-801 uygulanan standart fizik çevre grubunda da serum fizyolojik grubuna göre anlamlı azalma saptanmıştır (p<0,05). Sonuç: Sonuç olarak, zengin fizik çevre koşullarında yetişme, ergenlik öncesi dönem NMDA reseptör hipofonksiyonuna bağlı yetişkin dönem anksiyetesinden ve yeni uyaranla ilişkili duygusal ve davranışsal anormalliklerden korunmayı sağlamaktadır. (Nöropsikiyatri Arflivi 2012; 49: 248-254)

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Cite This Article

KOCAHAN, S., AKILLIOĞLU, K., MELİK, E. B., MELİK, E. (2012). The effects of social ısolation in standard and enriched physical environments on the adult emotional behavior of rats administered with MK-801 during the early developmental stage. Nöropsikiyatri Arşivi, Cilt: 49 - Sayı: 4, 248–254. https://ajindex.com/articles/292674

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References (17)

  1. Domeney A, Feldon J. The disruption of prepulse inhibition by social isolation in the Wistar rat: how robust is the effect? Pharmacol Biochem Behav 1998; 59:883-890
  2. Einon DF, Morgan MJ. Early isolation produced enduring hyperactivity in the rat but no effects on spontaneous alternation. Q J Exp Psychol 1978; 30:151-156
  3. Einon DF, Morgan MJ. A critical period for social isolation in the rat. Dev Psychobiol 1977; 10:123-132
  4. Geyer MA, Wilkinson LS, Humby T, Robbins TW. Isolation rearing of rats produces a deficit in prepulse inhibition of acoustic startle similar to that in schizophrenia. Biol Psychiatry 1993; 34:361-372
  5. Akal BN, Doğan O. Potential risk factors for schizophrenia. Archives of Neuropsychiatry 2010; 3:230-236
  6. O'Donnell P, Greene J, Pabello N, Lewis BL, Grace AA. Modulation of cell firing in the nucleus accumbens. Ann NY Acad. Sci 1999; 877:157-175
  7. Weinberger DR, Lipska BK. Cortical maldevelopment, anti-psychotic drugs, and schizophrenia: a search for common ground. Schizophr Res 1999; 16:87-110
  8. Glantz LA, Lewis DA. Decreased dendritic spine density on prefrontal cortical pyramidal neurons in schizophrenia. Arch Gen Psychiatry 2000; 57:65-73
  9. Cooke BM, Chowanadisai W, Breedlove SM. Post-weaning social isolation of male rats reduces the volume of the medial amygdala and leads to deficits in adult sexual behavior. Behav Brain Res 2000; 117:107-113
  10. Hall FS, Wilkinson LS, Humby T, Inglis W, Kendall DA, Marsden CA, Robbins TW. Isolation rearing in rats: pre and postsinaptic changes in striatal dpoaminerjic systems. Pharmacol.Biochem Behav 1998; 59:859-872
  11. Hol T, Van den Berg CL, Van Ree JM, Spruijt BM. Isolation during the play period in infancy decreases adult social interactions in rats. Behav Brain Res 1999; 100:91-97
  12. Rosenzweig MR, Bennett EL, Hebert M, Morimoto H. Social grouping cannot account for cerebral effects of enriched environments. Brain Res 1978; 153:563-576
  13. Thor DH, Holloway WR. Social play in juvenile rats: a decade of methodological and experimental research. Neurosci Biobehav Rev 1984; 8:455-464
  14. Contestabile A. Roles of NMDA receptor activity and nitric oxide production in brain development. Brain Res Brain Res Rev 2000; 32:476-509
  15. Rothman SM, Olney JW. Glutamate and the pathophysiology of hypoxic-- ischemic brain damage. Ann Neuro1 1986; 19:105-111
  16. Colye JT. The glutamatergic dysfunction hypohtesis for schizophrenia. Harv Rev Psychiatry 1997; 3:241-253
  17. Castro