Effect of pre- and post-treatment with Bacopa monnieri (Brahmi) on phencyclidine-induced disruptions in object recognition memory and cerebral calbindin, parvalbumin, and calretinin immunoreactivity in rats

P Piyabhan,1 P Tingpej,2 N Duansak11Division of Physiology, Department of Preclinical Science, Faculty of Medicine, Thammasat University, KlongLuang, Pathumthani, Thailand; 2Division of Microbiology, Department of Preclinical Science, Faculty of Medicine, Thammasat University, KlongLuang, Pathumthan...

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Autores principales:	Piyabhan P, Tingpej P, Duansak N
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2019
Materias:	Schizophrenia Cognitive impairment Bacopa monnieri Calbindin Parvalbumin Calretinin Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429
Acceso en línea:	https://doaj.org/article/d181e7ae4c4144e8b29b165cb375f347
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spelling	oai:doaj.org-article:d181e7ae4c4144e8b29b165cb375f3472021-12-02T03:02:43ZEffect of pre- and post-treatment with Bacopa monnieri (Brahmi) on phencyclidine-induced disruptions in object recognition memory and cerebral calbindin, parvalbumin, and calretinin immunoreactivity in rats1178-2021https://doaj.org/article/d181e7ae4c4144e8b29b165cb375f3472019-05-01T00:00:00Zhttps://www.dovepress.com/effect-of-pre--and-post-treatment-with-bacopa-monnieri-brahmi-on-phenc-peer-reviewed-article-NDThttps://doaj.org/toc/1178-2021P Piyabhan,1 P Tingpej,2 N Duansak11Division of Physiology, Department of Preclinical Science, Faculty of Medicine, Thammasat University, KlongLuang, Pathumthani, Thailand; 2Division of Microbiology, Department of Preclinical Science, Faculty of Medicine, Thammasat University, KlongLuang, Pathumthani, ThailandBackground: Decreased gamma-aminobutyric acid (GABA)-ergic neurons in the brain of both schizophrenic patients and animal models indicates that impairment of GABAergic function is implicated in pathophysiology of the disorder. Decreased GABAergic neurotransmission might be also involved in cognitive impairment, which is developed in schizophrenia. Brahmi (Bacopa monnieri) could be a new treatment and prevention for this cognitive deficit in schizophrenia by increasing GABAergic neurons to a normal level.Aim: The authors aimed to study cognitive-enhancement- and neuroprotective-effects of Brahmi on novel object recognition memory and GABAergic neuronal density, defined by the presence of calcium binding proteins (CBPs; calbindin (CB), parvalbumin (PV), and calretinin (CR)) in a sub-chronic (2 mg/kg, Bid, ip) phencyclidine (PCP) rat model of schizophrenia.Materials and methods: In the cognitive-enhancement-effect study rats were assigned to three groups; Group-1: Control, Group-2: PCP-administration, and Group-3: PCP+Brahmi. In the neuroprotective-effect study rats were assigned to three groups; Group-1: Control, Group-2: PCP-administration, and Group-3: Brahmi+PCP. A discrimination ratio (DR) representing cognitive ability was obtained from the novel object recognition task. CB, PV, and CR immunodensity were measured in the prefrontal cortex, striatum, and cornuammonis fields 1–3 (CA1–3) using immunohistochemistry.Results: Reduced DR was found in the PCP group, which occurred alongside reduced CB, PV, and CR in all brain regions except for CR in the striatum and CA1–3 in the cognitive-enhancement-effect study. PCP+Brahmi showed a higher DR score with increased CB in the prefrontal cortex and striatum, increased PV in the prefrontal cortex and CA1–3, and increased CR in the prefrontal cortex. The Brahmi+PCP group showed higher DR score with increased CB in all areas, increased PV in the striatum, and increased CR in the prefrontal cortex and striatum.Conclusion: The present study demonstrated the effects, both partial restoration of cognitive deficit and neuroprotection, of Brahmi, and elucidated its underlying mechanism of actions via increasing GABAergic neurons in a PCP-induced schizophrenic-like model.Keywords: schizophrenia, cognitive impairment, Bacopa monnieri, calbindin, parvalbumin, calretininPiyabhan PTingpej PDuansak NDove Medical PressarticleSchizophreniaCognitive impairmentBacopa monnieriCalbindinParvalbuminCalretininNeurosciences. Biological psychiatry. NeuropsychiatryRC321-571Neurology. Diseases of the nervous systemRC346-429ENNeuropsychiatric Disease and Treatment, Vol Volume 15, Pp 1103-1117 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Schizophrenia Cognitive impairment Bacopa monnieri Calbindin Parvalbumin Calretinin Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429
spellingShingle	Schizophrenia Cognitive impairment Bacopa monnieri Calbindin Parvalbumin Calretinin Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429 Piyabhan P Tingpej P Duansak N Effect of pre- and post-treatment with Bacopa monnieri (Brahmi) on phencyclidine-induced disruptions in object recognition memory and cerebral calbindin, parvalbumin, and calretinin immunoreactivity in rats
description	P Piyabhan,1 P Tingpej,2 N Duansak11Division of Physiology, Department of Preclinical Science, Faculty of Medicine, Thammasat University, KlongLuang, Pathumthani, Thailand; 2Division of Microbiology, Department of Preclinical Science, Faculty of Medicine, Thammasat University, KlongLuang, Pathumthani, ThailandBackground: Decreased gamma-aminobutyric acid (GABA)-ergic neurons in the brain of both schizophrenic patients and animal models indicates that impairment of GABAergic function is implicated in pathophysiology of the disorder. Decreased GABAergic neurotransmission might be also involved in cognitive impairment, which is developed in schizophrenia. Brahmi (Bacopa monnieri) could be a new treatment and prevention for this cognitive deficit in schizophrenia by increasing GABAergic neurons to a normal level.Aim: The authors aimed to study cognitive-enhancement- and neuroprotective-effects of Brahmi on novel object recognition memory and GABAergic neuronal density, defined by the presence of calcium binding proteins (CBPs; calbindin (CB), parvalbumin (PV), and calretinin (CR)) in a sub-chronic (2 mg/kg, Bid, ip) phencyclidine (PCP) rat model of schizophrenia.Materials and methods: In the cognitive-enhancement-effect study rats were assigned to three groups; Group-1: Control, Group-2: PCP-administration, and Group-3: PCP+Brahmi. In the neuroprotective-effect study rats were assigned to three groups; Group-1: Control, Group-2: PCP-administration, and Group-3: Brahmi+PCP. A discrimination ratio (DR) representing cognitive ability was obtained from the novel object recognition task. CB, PV, and CR immunodensity were measured in the prefrontal cortex, striatum, and cornuammonis fields 1–3 (CA1–3) using immunohistochemistry.Results: Reduced DR was found in the PCP group, which occurred alongside reduced CB, PV, and CR in all brain regions except for CR in the striatum and CA1–3 in the cognitive-enhancement-effect study. PCP+Brahmi showed a higher DR score with increased CB in the prefrontal cortex and striatum, increased PV in the prefrontal cortex and CA1–3, and increased CR in the prefrontal cortex. The Brahmi+PCP group showed higher DR score with increased CB in all areas, increased PV in the striatum, and increased CR in the prefrontal cortex and striatum.Conclusion: The present study demonstrated the effects, both partial restoration of cognitive deficit and neuroprotection, of Brahmi, and elucidated its underlying mechanism of actions via increasing GABAergic neurons in a PCP-induced schizophrenic-like model.Keywords: schizophrenia, cognitive impairment, Bacopa monnieri, calbindin, parvalbumin, calretinin
format	article
author	Piyabhan P Tingpej P Duansak N
author_facet	Piyabhan P Tingpej P Duansak N
author_sort	Piyabhan P
title	Effect of pre- and post-treatment with Bacopa monnieri (Brahmi) on phencyclidine-induced disruptions in object recognition memory and cerebral calbindin, parvalbumin, and calretinin immunoreactivity in rats
title_short	Effect of pre- and post-treatment with Bacopa monnieri (Brahmi) on phencyclidine-induced disruptions in object recognition memory and cerebral calbindin, parvalbumin, and calretinin immunoreactivity in rats
title_full	Effect of pre- and post-treatment with Bacopa monnieri (Brahmi) on phencyclidine-induced disruptions in object recognition memory and cerebral calbindin, parvalbumin, and calretinin immunoreactivity in rats
title_fullStr	Effect of pre- and post-treatment with Bacopa monnieri (Brahmi) on phencyclidine-induced disruptions in object recognition memory and cerebral calbindin, parvalbumin, and calretinin immunoreactivity in rats
title_full_unstemmed	Effect of pre- and post-treatment with Bacopa monnieri (Brahmi) on phencyclidine-induced disruptions in object recognition memory and cerebral calbindin, parvalbumin, and calretinin immunoreactivity in rats
title_sort	effect of pre- and post-treatment with bacopa monnieri (brahmi) on phencyclidine-induced disruptions in object recognition memory and cerebral calbindin, parvalbumin, and calretinin immunoreactivity in rats
publisher	Dove Medical Press
publishDate	2019
url	https://doaj.org/article/d181e7ae4c4144e8b29b165cb375f347
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_version_	1718402010022150144

Effect of pre- and post-treatment with Bacopa monnieri (Brahmi) on phencyclidine-induced disruptions in object recognition memory and cerebral calbindin, parvalbumin, and calretinin immunoreactivity in rats

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