Abstract：
:Developing animals are more sensitive than adults to the delayed neurotoxicity caused by chlorpyrifos exposure. In developing rat brain, chlorpyrifos doses that cause no discernible systemic toxicity and only a minor degree of cholinesterase inhibition, nevertheless evoke alterations in cell function and number that appear after several days' delay. In the current study, neonatal rats were exposed to subtoxic doses of chlorpyrifos (no weight loss or mortality) on either postnatal days 1-4, or postnatal days 11-14, and the effects on cellular RNA levels were determined in two brain regions that are targeted for delayed neurotoxicity-the brainstem and forebrain. In both regions, chlorpyrifos exposure evoked significant alterations in RNA concentration and content, variables that are ordinarily very tightly controlled in the developing brain. The effects on RNA appeared well before the deficits in cell function and number and showed a regional selectivity similar to that of subsequent, delayed neurotoxicity. Deficits in RNA were more prominent in the brainstem, an early-developing brain region, than in the forebrain, which develops later. These results suggest that chlorpyrifos can elicit delayed developmental neurotoxicity by targeting the pivotal macromolecules that control cell differentiation in a critical postmitotic period. The lower threshold for these cellular effects compared to that for systemic toxicity indicates that the developing brain is a selective target for chlorpyrifos, effects that should be considered in assessing safety thresholds.
journal_name
Brain Res Bulljournal_title
Brain research bulletinauthors
Johnson DE,Seidler FJ,Slotkin TAdoi
10.1016/s0361-9230(97)00329-8subject
Has Abstractpub_date
1998-01-01 00:00:00pages
143-7issue
2eissn
0361-9230issn
1873-2747pii
S0361923097003298journal_volume
45pub_type
杂志文章abstract：:Neurobiotin and Lucifer yellow, indicators of gap junctional coupling, were applied to primary afferent fibers of the frog. Following application of tracers to cervical or lumbar dorsal root fibers, a large number of labeled granule cells were detected in the corpus cerebelli, the brainstem, and the spinal cord. The v...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(01)00707-9
更新日期：2002-02-01 00:00:00
abstract：:The acute effects of 2-deoxy-D-glucose (2-DG)-induced glucoprivic feeding on the anorectic drug recognition site and Na+K(+)-ATPase in the brain were examined in adult rats and in lean and genetically obese mice. The marked hyperglycemia and the induction of feeding caused by the administration of 2-DG to satiated rat...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(92)90180-6
更新日期：1992-02-01 00:00:00
abstract：:Although the core protein of a heparan sulfate proteoglycan has been detected in brain microvessel basement membranes by immunoperoxidase staining, cytochemical evidence of a glycosaminoglycan component, in the form of discrete staining with ruthenium red, is not found. To resolve this discrepancy, we examined the gly...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(88)90005-6
更新日期：1988-01-01 00:00:00
abstract：:Previously we have shown that systemic injection of adenosine antagonists can significantly improve cold tolerance in both rats and humans. However, it is not clear whether systemic administration of adenosine antagonist acts peripherally or centrally at the thermoregulatory site. To resolve this, theophylline (nonsel...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(90)90094-g
更新日期：1990-03-01 00:00:00
abstract：:The efferent and centrifugal afferent connections of the main olfactory bulb (MOB) of the mouse were studied by orthograde and retrograde transport of wheat germ agglutinin conjugated to horseradish peroxidase (WGA-HRP). MOB projects ipsilaterally to the anterior olfactory nucleus, taenia tecta, anterior hippocampal c...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(84)90148-5
更新日期：1984-06-01 00:00:00
abstract：:4-Hydroxy-4-phenylcaproamide (HPhCA), at high doses or rates of IV injection depressed the ventral root reflexes elicited by nerve or dorsal root stimulation. The D (direct) and I (synaptic) ventral root waves and the antidromic (A) dorsal root wave evoked by intraspinal stimulation were also depressed. Similar effect...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(94)90242-9
更新日期：1994-01-01 00:00:00
abstract：:In tests of corticosterone production in vitro, aqueous pineal homogenate (APH) modulates the effect of a short-chain ACTH analogue, ACTH 1-17, added to adrenals from different circadian stages. Adrenal and pineal glands from female B6D2F1 mice, standardized on staggered LD 12:12 regimens, were obtained at the same cl...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90060-6
更新日期：1983-07-01 00:00:00
abstract：:We investigated the likelihood that bradykinesia coexisted with levodopa-induced dyskinesias (LID) in 10 dyskinetic Parkinson's disease patients (DPD). Their motor performance was compared to that of 10 age/gender-matched non-dyskinetic patients (NDPD) and 10 healthy controls. Whole-body movement (WBM) and rapid alter...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2006.02.015
更新日期：2006-05-15 00:00:00
abstract：:Neuronal nitric oxide synthase (nNOS) has been reported to be up-regulated in the hypothalamic supraoptic nucleus (SON) during dehydration which in turn could increase nitric oxide (NO) production and consequently affect arginine vasopressin (AVP) secretion. The anteroventral third ventricle (AV3V) region has strong a...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2011.07.020
更新日期：2011-10-10 00:00:00
abstract：:The neural substrate of anxiety response (state anxiety) to a threatening situation is well defined. However, a lot less is known about brain structures implicated in the individual's predisposition to anxiety (trait anxiety). Scientific evidences lead us to suppose that the medial prefrontal cortex (mPFC) is involved...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2018.08.009
更新日期：2018-09-01 00:00:00
abstract：:Sporadic Alzheimer's disease (AD) is a multifactorial neurodegenerative disorder affected by amyloid and vascular pathogenesis. Brain insulin resistance (BIR) has been suggested as one of the pathomechanisms of sporadic AD. We investigated how the amyloid and vascular pathogenesis of AD interacts with BIR. We examined...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2020.02.012
更新日期：2020-05-01 00:00:00
abstract：:Songbirds have emerged as extremely important animals for investigating sex steroid hormone effects on the central nervous system. The masculinizing effects of exogenous estrogen on the neural circuits controlling song in female zebra finches are well documented. There is evidence that estrogens are necessary for the ...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/s0361-9230(97)00215-3
更新日期：1997-01-01 00:00:00
abstract：:This study aims to evaluate the neuroprotective effect of sodium butyrate against the pentylenetetrazol (PTZ)-induced kindling epilepsy. Sodium butyrate (SB) (5, 10 and 20 mg/kg) and sodium valproate for 40 days and PTZ (37 mg/kg) injection every day were conducted for Kunming mice, to investigate seizure intensity an...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2020.12.009
更新日期：2020-12-28 00:00:00
abstract：:In brainstem slices of male rats, we examined in single neurons of the medial vestibular nucleus (MVN) the effect of exogenous administration of estrogenic (17β-estradiol, E2) and androgenic (5α-dihydrotestosterone, DHT) steroids on the synaptic response to vestibular afferent stimulation. By whole cell patch clamp re...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2013.05.006
更新日期：2013-08-01 00:00:00
abstract：BACKGROUND:Traditional Medicine Practices (TMP) which are premised on indigenous knowledge and experiences within a local context of the culture and environment, are common place in low income countries. In Africa and in Uganda specifically, nearly 80% of the Ugandan population relies on TMP for the care of their menta...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2018.07.018
更新日期：2019-02-01 00:00:00
abstract：:We investigated whether a continuous supply of glial cell line-derived neurotrophic factor (GDNF) via encapsulated genetically modified cells can promote survival and fiber outgrowth from xenotransplanted human dopaminergic neurons. Cells genetically engineered to continuously secrete GDNF were confined in hollow fibe...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2005.04.009
更新日期：2005-07-30 00:00:00
abstract：BACKGROUND:Nitric oxide (NO) is a gaseous molecule that modulates several physiological processes, including signal transmission in the central nervous system. There is evidence supporting NO as a major neurotransmitter involved in motor and emotion/behavior control. We investigated the distribution and morphology of n...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2016.04.003
更新日期：2016-06-01 00:00:00
abstract：:The uptake of 3H-2-deoxyglucose (3H-2-DG) in selected brain structures was determined subsequent to electrical stimulation of insular cortex (Ins) and the mediodorsal (MD) nucleus of the thalamus in rabbits. Stimulation of Ins elicited parasympathetic-like responding (i.e., bradycardia and depressor responses); wherea...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(87)90148-1
更新日期：1987-10-01 00:00:00
abstract：:Somatostatin immunoreactive (SOM-I) perikarya were first observed in the ventral horn at E12, in the presumptive intermediate gray area at E14, and in the alar plate of the rostral spinal cord at E14. In general, after their initial appearance, their density increased and then decreased during development. A moderate ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(88)90125-6
更新日期：1988-07-01 00:00:00
abstract：:Neutral, magnesium-stimulated sphingomyelinase and acid sphingomyelinase activities in the neurohypophysis, adenohypophysis and cerebrum of rats given 2.25% NaCl drinking water for 7 or 14 days were compared with the same enzyme activities in the tissues of control animals allowed free access to distilled drinking wat...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90028-x
更新日期：1983-05-01 00:00:00
abstract：:The influence of nodose ganglionectomy or transection of the peripheral branches of the afferent vagus nerve on choline acetyltransferase (ChAT) activity in the nucleus tractus solitarius (NTS) was studied. ChAT activity was reduced in the microdissected caudal and intermediate portions of the NTS in vagotomized as we...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90139-9
更新日期：1983-04-01 00:00:00
abstract：:Injection of colchicine into the lateral ventricles (ICV) of rats results in a selective loss of neurons immunoreactive for choline acetyltransferase (ChAT) in the medial septum (MS) and a concomitant loss of acetylcholinesterase (AChE) positive fibers in the hippocampus. To determine if this loss of cholinergic cells...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(92)90132-h
更新日期：1992-11-01 00:00:00
abstract：:The changes of characteristics of dopamine (D1 and D2) and muscarinic receptors after acute and subacute administration of bicuculline were examined in rat brain. The results demonstrated that in striatal region, the Bmax of D2 receptor was significantly increased with no change of affinity after subacute administrati...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(88)90114-1
更新日期：1988-07-01 00:00:00
abstract：:Bone marrow stromal cells (BMSCs) are promising donor cells for transplantation therapies for a variety of diseases. However, there still lack efficient ways to induce directional differentiation of BMSCs to promote their practical use in transplantation therapy. In this study, we constructed hybrid cells by transferr...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2011.11.001
更新日期：2012-02-10 00:00:00
abstract：:The microdialysis method was utilized to study the effects of N omega-nitro-L-arginine (L-NNA) and N omega-nitro-D-arginine (D-NNA), an inhibitor of nitric oxide (NO) synthesis from L-arginine and its D-enantiomer, on spontaneous and N-methyl-D-aspartate (NMDA)-evoked overflow of striatal extracellular dopamine (DA) i...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(94)90021-3
更新日期：1994-01-01 00:00:00
abstract：:An improved comparative interpretation of the teleostean forebrain suggests that the dorsal tier (Vd,Vc) and ventral tier (Vv,Vl) nuclei of the ventral telencephalic area (subpallium) represent the striatum and septum, respectively. Among other arguments, a dopaminergic innervation originating in the diencephalic post...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/s0361-9230(01)00666-9
更新日期：2002-02-01 00:00:00
abstract：OBJECTIVE:Cerebral ischemic stroke (IS) threatens the daily life of individuals, with high mortality. Emerging studies have deciphered the independent roles of the long non-coding RNA growth-arrest-specific transcript 5 (GAS5), microRNA (miR)-455-5p and phosphatase and tensin homolog (PTEN) in IS, but the understanding...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2020.12.002
更新日期：2021-02-01 00:00:00
abstract：:Spinal astrocytes have emerged as important mechanistic contributors to pathological and chronic pain. Recently, we have demonstrated that injection of diluted bee venom (DBV) into the Zusanli (ST36) acupoint produces a potent anti-nociceptive effect via the activation of spinal alpha-2 adrenoceptors. However, it is u...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2011.08.012
更新日期：2011-11-25 00:00:00
abstract：:The development of central serotonergic neurons has been examined immunocytochemically utilizing an antiserum to serotonin (5-HT). Cells of the B4-B9 complex are first detected early on embryonic day 13 (E13; 7 mm crown rump length, CRL) and increase rapidly in number through E15 when they appear as bilateral columns ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90144-2
更新日期：1983-04-01 00:00:00
abstract：:The serotonin(2A) (5HT(2A)) receptors have been shown to play an important role in several psychiatric disorders, including depression, schizophrenia, and alcoholism. This immunohistochemical study examined the cellular localization of 5HT(2A) receptors in various rat brain structures (olfactory, striatum, cortex, hip...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(99)00278-6
更新日期：2000-04-01 00:00:00
