Abstract:
:We studied the GABAergic control of the spinal locomotor network using an isolated brain stem/spinal cord from newborn rats, in which locomotor-like activity was recorded. We demonstrate that endogenously released GABA controls the locomotor network, by decreasing or completely abolishing all locomotor-like activity. At first, we investigated the role played by GABA in the control of the locomotor period. By separately superfusing various compartments of the lumbar cord, we identified the targets of GABA. When bath-applied on the upper lumbar segments (L1/L2), GABA or its agonists (muscimol, baclofen) modulated the locomotor period, whereas it had no effects when bath-applied on the caudal lumbar cord (L3/L6). In the second step we studied how GABA may presynaptically control the locomotor drive arising from the locomotor network located in L1/L2. By use of the partitioned spinal cord, intracellular recordings from the caudal pool motoneurons (L4/L5) were performed, while initiating locomotor-like activity in L1/L2. We found that GABA or its agonists decreased the monosynaptic locomotor drive that the motoneurons received from the L1/L2 network, and we found a presynaptic effect exerted through the activation of GABAB receptors. In conclusion, this study emphasizes the role played by GABA at various levels in the control of the locomotor network in mammals.
journal_name
Ann N Y Acad Scijournal_title
Annals of the New York Academy of Sciencesauthors
Cazalets JR,Bertrand S,Sqalli-Houssaini Y,Clarac Fdoi
10.1111/j.1749-6632.1998.tb09047.xsubject
Has Abstractpub_date
1998-11-16 00:00:00pages
168-80eissn
0077-8923issn
1749-6632journal_volume
860pub_type
杂志文章,评审abstract::Our recent work shows that in addition to pumping ions, Na/K-ATPase acts as a signal transducer. Binding of ouabain to Na/K-ATPase changes the interaction of the enzyme with neighboring membrane proteins and induces the formation of multiple signaling modules, resulting in activation of Src, transactivation of the EGF...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.2003.tb07234.x
更新日期:2003-04-01 00:00:00
abstract::Pituitary adenylate cyclase-activating polypeptide (PACAP) is a structurally highly conserved neuropeptide and displays pleiotropic activity, including functioning as a neurotransmitter, neuromodulator, and neurotrophic factor. A series of recent experiments, including genetic manipulation of PACAP and its receptors, ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1196/annals.1317.038
更新日期:2006-07-01 00:00:00
abstract::We have successfully expressed the active tyrosinase of Streptomyces antibioticus in Escherichia coli under the control of the trp promoter by fusing the sequence to the ORF438 gene. Because our attempt to connect the polycistronic gene of ORF438 and tyrosinase directly to the trp promoter of E. coli resulted in the e...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1994.tb47374.x
更新日期:1994-05-02 00:00:00
abstract::Evidence gathered to date from topographic data, geophysical data, well logs, and drill-core samples indicates that the buried Chicxulub basin, the source crater for the approximately 65 Ma Cretaceous-Tertiary (K/T) boundary deposits, is approximately 300 km in diameter. A prominent topographic ridge and a ring of gra...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1997.tb48351.x
更新日期:1997-05-30 00:00:00
abstract::Why does music pervade our lives and those of all known human beings living today and in the recent past? Why do we feel compelled to engage in musical activity, or at least simply enjoy listening to music even if we choose not to actively participate? I argue that this is because musicality--communication using varia...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2009.04590.x
更新日期:2009-07-01 00:00:00
abstract::Several reports addressed the issue of how the alternative splicing of exon 7 and 8 in the APP pre-mRNA is regulated in different tissues. Of special interest here was the potential involvement of exon 7 containing APP splice isoforms, since this exon codes for a serine protease inhibitor and is therefore of putative ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1993.tb23049.x
更新日期:1993-09-24 00:00:00
abstract::The Br-type neuron of the snail Helix pomatia, involved in neuronal regulation of various homeostatic and adaptive mechanisms, represents an interesting model for studying effects of temperature change on neuronal activity of poikilotherms. Acetylcholine induces a transient, inward dose-dependent current in the identi...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1342.036
更新日期:2005-06-01 00:00:00
abstract::Hematopoietic growth factors are glycoproteins of 15-70 kDa. Although much clinical success has been obtained using recombinant proteins produced in mammalian cell lines and in microbial fermentation processes, the full-length polypeptides necessarily are expensive to produce, require parenteral administration, and in...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2001.tb03582.x
更新日期:2001-06-01 00:00:00
abstract::In this study, we analyzed the effect of Bcl-2 overexpression, an important anti-apoptotic protein, by using two hypothalamic cell lines, GT1-7puro or GT1-7bcl-2. 3-Nitropropionic acid (3-NP) mediated a dose-dependent decrease in cell viability in GT1-7puro cells, as determined by following the MTT (3-(4,5-dimethylthi...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1299.024
更新日期:2003-12-01 00:00:00
abstract::It has been proposed that spacetime should be regarded as an evolving block universe, bounded to the future by the present time, which continually extends to the future. This future boundary is defined at each time by measuring proper time along Ricci eigenlines from the start of the universe. A key point, then, is th...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.12559
更新日期:2014-10-01 00:00:00
abstract::Tolerance has been defined as a lack of response to self but a more appropriate definition of tolerance is "any mechanism by which a potentially injurious immune response is prevented, suppressed, or shifted to a non-injurious class of immune response." Thus, tolerance is related to productive self-recognition, rather...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1196/annals.1309.053
更新日期:2004-12-01 00:00:00
abstract::Red spruce (Picea rubens Sarg.) and balsam fir (Abies balsamea (L.) Mill.) were present by 13,700 years B.C.E. in the Catskills Mountains of southeastern New York State. These conifers were, and still are, largely confined to the eastern and far western portions of the region. A gap in the distribution exists between ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/nyas.12274
更新日期:2013-09-01 00:00:00
abstract::Tyrosine hydroxylase (TH) is the rate-limiting enzyme in catecholamine biosynthesis. Does common genetic variation at human TH alter autonomic activity and predispose to cardiovascular disease? We undertook systematic polymorphism discovery at the TH locus, and then tested variants for contributions to sympathetic fun...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1410.085
更新日期:2008-12-01 00:00:00
abstract::The Balb/c mice were infected with Coxiella burnetii and samples of blood and major organs from the infected mice were collected on days 1 to 14 after infection. The DNAs extracted from the samples were detected by a developed real-time quantitative PCR specific for C. burnetii and high loads of C. burnetii were found...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1355.027
更新日期:2005-12-01 00:00:00
abstract::We have developed a rabbit model of in utero exposure to intravenous injections of cocaine given twice daily to dams from gestational days 8-29. At the doses employed (4 mg/kg, injected twice daily), no differences were found in the body weight gain of dams, time to delivery, litter size, and body weight or other phys...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:
更新日期:1998-06-21 00:00:00
abstract::While the ventral pallidum (VP) is known to be important in relaying information between the nucleus accumbens and target structures, it has become clear that substantial information processing occurs within the VP. We evaluated the possibility that opioid modulation of other transmitters contained in VP afferents is ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1999.tb09268.x
更新日期:1999-06-29 00:00:00
abstract::Ischemia and reperfusion injure the heart, as manifested by myocardial infarction, postischemic ventricular functional dysfunctions, arrhythmias, and cardiomyocyte apoptosis. Hearts can be adapted to ischemic-reperfusion injury by subjecting them to non-lethal cyclic episodes of short-term ischemia and reperfusion. Th...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1999.tb09254.x
更新日期:1999-06-30 00:00:00
abstract::The free radical theory of aging proposes that oxidative stress is one of the determinants of an organism's life span. In Caenorhabditis elegans, genetic or environmental changes have been shown to modulate life span. Here we discuss whether changes in the generation and destruction of free radicals are implicated in ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.2002.tb02117.x
更新日期:2002-04-01 00:00:00
abstract::Over the last years, El Sistema--the Venezuelan project started in 1975 and now acknowledged worldwide as the most significant example of collective music education--has inspired a profusion of remarkable initiatives on all continents. From the original impulse by founder José Antonio Abreu, strong social principles o...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2012.06498.x
更新日期:2012-04-01 00:00:00
abstract::Posttraumatic stress disorder (PTSD) is typically accompanied by both acute and chronic alterations in the stress response. These alterations have mostly been described in individuals under baseline conditions, but studies have also used a challenge model to assess the role of the hypothalamic-pituitary-adrenal (HPA) ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,随机对照试验
doi:10.1196/annals.1364.014
更新日期:2006-07-01 00:00:00
abstract::To improve safety and health in the workplace, appropriate occupational health programs should be implemented utilizing expertise from multiple disciplines. In other words, the occupational health program should be a team effort. Expertise from all aspects of occupational health should be utilized, from the industrial...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1997.tb56884.x
更新日期:1997-12-26 00:00:00
abstract::The endothelial regulation of vWF synthesis, storage, regulated and constitutive release, and now binding are the focus of numerous research laboratories. The understanding of these phenomena is important to the pathophysiology of local hemostasis. Although the structural understanding of the relationship of vW AgII t...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1987.tb30984.x
更新日期:1987-01-01 00:00:00
abstract::The treatment of substance use disorders has always been challenging because multiple neurotransmitters mediate addiction. However, with smoking being the leading cause of preventable death and the recent opioid epidemic in the United States, the search for novel solutions becomes more imperative. In this review, we d...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.14329
更新日期:2020-03-08 00:00:00
abstract::The mobilization and recruitment of blood and lymphatic vasculatures are widely described in inflammatory bowel diseases (IBDs). Although angiogenesis contributes to intense gut inflammation, it remains unclear whether and when lymphangiogenesis amplifies or protects in IBD. The prolonged maintenance of lymphatic (ove...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.2010.05757.x
更新日期:2010-10-01 00:00:00
abstract::Policy and program implementers require evidence on whether integrated psychosocial stimulation and nutrition interventions can be effectively delivered at-scale, how, and at what cost? To address some of these issues, a comprehensive evaluation of implementation was designed for a trial in Pakistan that integrated ps...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/nyas.13649
更新日期:2018-05-01 00:00:00
abstract::Ascorbic acid has been found to interact with several elements in such a manner as to render them less available for animals. This property of the vitamin has a negative effect on the animals fed a copper-deficient diet, but a positive effect on those fed toxic levels of copper, selenium, vanadium, and cobalt. The eff...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1980.tb21344.x
更新日期:1980-01-01 00:00:00
abstract::Among the five enzyme complexes in the oxidative phosphorylation system, NADH-coenzyme Q oxidoreductase (also called complex I) is the largest, most intricate, and least understood. This enzyme complex spans the inner mitochondrial membrane and catalyzes the first step of electron transfer by the oxidation of NADH, an...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.12858
更新日期:2015-09-01 00:00:00
abstract::Many electronic design tools are, at their core, tools for analyzing interacting networks of components in which there is a definite causal sense of direction in each interaction: outputs affect inputs, but not vice versa. Simplifying or restricting a network of protein interactions so that this kind of directedness h...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2002.tb04534.x
更新日期:2002-10-01 00:00:00
abstract::Neuroendocrine tumors are very heterogeneous, develop from a variety of tissues, and can be difficult to diagnose. Without the clinical manifestation of metastases, it is often difficult to characterize them as malignant. Even so-called completely (R0) resected tumors can spread clinically visible metastases within a ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1353.055
更新日期:2006-08-01 00:00:00
abstract::These findings demonstrate that calcium antagonists reverse renal vasoconstriction in a variety of settings. The ability of calcium antagonists to augment GFR of the vasoconstricted kidney is striking and has also been demonstrated in a number of in vivo settings. These observations and others raise the possibility th...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1988.tb33428.x
更新日期:1988-01-01 00:00:00