Abstract:
:Cowdria ruminantium is an obligate intracellular rickettsial pathogen which is responsible for a tick-borne disease of domestic and wild ruminants called heartwater or cowdriosis. Although several genes have been cloned and partially sequenced, the genome size, gross structure, and organization of the C. ruminantium genome is unknown. Genome analysis of the organism has been hindered because it is difficult to obtain C. ruminantium DNA free from contaminating host cell DNA, and this probably accounts for the lack of genome size data for this organism. In this study we investigated several methods for purifying C. ruminantium from bovine cellular contaminants and organisms of a relatively high purity were obtained. These were used to prepare Cowdria DNA which was analyzed by pulsed-field gel electrophoresis (PFGE) and which revealed a genome approximately 1900 kbp in length plus an additional extra-chromosomal fragment migrating with an apparent size of 815 kbp. This is the first time that the genome size of C. ruminantium has been determined and the first demonstration of an extrachromosomal element.
journal_name
Ann N Y Acad Scijournal_title
Annals of the New York Academy of Sciencesauthors
de Villiers EP,Brayton KA,Zweygarth E,Allsopp BAdoi
10.1111/j.1749-6632.1998.tb11064.xsubject
Has Abstractpub_date
1998-06-29 00:00:00pages
313-20eissn
0077-8923issn
1749-6632journal_volume
849pub_type
杂志文章abstract::Pituitary adenylate cyclase-activating polypeptide (PACAP) is well known to protect delayed neuronal cell death in the brain of rodents. In order to investigate the neuroprotective action of PACAP in the retina, we examined the effects of PACAP on kainic acid (KA)-induced neurotoxicity in the rat retina. Many ganglion...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1317.074
更新日期:2006-07-01 00:00:00
abstract::Emerging infectious diseases are of international concern because of the potential for, and impact of, pandemics; however, they are difficult to predict. To identify the drivers of disease emergence, we analyzed infectious disease threat events (IDTEs) detected through epidemic intelligence collected at the European C...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.13132
更新日期:2016-10-01 00:00:00
abstract::A significant body of research links individual differences in symbolic numerical abilities, such as arithmetic, to number sense, the neurobiological system used to approximate and manipulate quantities without language or symbols. However, recent findings from cognitive neuroscience challenge this influential theory....
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.14225
更新日期:2020-03-01 00:00:00
abstract::GABAA receptor heterogeneity is based on the combinatorial assembly of a large family of subunits into distinct receptor subtypes. A neuron-specific expression pattern of receptor subtypes has been demonstrated in adult rat brain, which can be reproduced in vitro in primary neuron cultures. This suggests that genetic ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1999.tb11342.x
更新日期:1999-04-30 00:00:00
abstract::"Vascular anomalies" represents a spectrum of vascular lesions, of unclear etiology and often with unpredictable behavior. Patients with vascular anomalies represent a unique population, in that they have focal aberrations of vascular development (in vascular malformations) or vascular proliferation (in hemangiomas). ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1196/annals.1413.016
更新日期:2008-01-01 00:00:00
abstract::The neurotransmitter serotonin (5-HT) has been implicated in the modulation of aggression in animals and humans. A longstanding dogma that aggression and serotonergic activity are inversely related has to be abandoned in light of many new findings. Trait and state aggression are differentially regulated by the 5-HT sy...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1196/annals.1330.022
更新日期:2004-12-01 00:00:00
abstract::Throughout this century in the United States, tension has existed between those who believe drug abuse is best combatted through the criminal justice system and those who emphasize a medical/public health model of prevention and treatment. In the last decade this debate has centered around the person of the pregnant a...
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::Ischemic preconditioning (PC) is a polygenic defensive cellular adaptive phenomenon whereby brief ischemic stimuli render the heart resistant to subsequent similar stress. The late phase of ischemic PC lasts for three to four days, protects against both myocardial stunning and infarction, and thus has considerable cli...
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.tb04053.x
更新日期:2002-05-01 00:00:00
abstract::In the late 1970s, Wally Welker and his colleagues published a series of papers describing the first high-resolution physiological maps of tactile mossy fiber projections to the granule cell layer of the rat. Over the subsequent decade, his laboratory continued to explore the implications of these results for cerebell...
journal_title:Annals of the New York Academy of Sciences
pub_type: 传,历史文章,杂志文章,评审
doi:10.1111/j.1749-6632.2011.06020.x
更新日期:2011-04-01 00:00:00
abstract::Mitochondrial dysfunction, due to either environmental or genetic factors, can result in excessive production of reactive oxygen species, triggering the apoptotic death of dopaminergic cells in Parkinson's disease. Mitochondrial free radical production is promoted by the inhibition of electron transport at any point d...
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.tb07469.x
更新日期:2003-06-01 00:00:00
abstract::Continuous dopamine (DA) stimulation is a therapeutic approach that applies to the treatment of motor fluctuations due to pulsatile DA stimulation in Parkinson's disease (PD), to cure the abuse of drugs, such as cocaine or amphetamine (which produce short-lasting peaks of extracellular DA), and as a safe therapeutic a...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1369.031
更新日期:2006-08-01 00:00:00
abstract::Immunoglobulin 4 (IgG4) is one of four human IgG subclasses and has several unique functional characteristics. It exhibits low affinity for complement and for most Fc receptors. It furthermore has generally high affinity for its antigen, with binding occurring in a monovalent fashion, as IgG4 can exchange Fab-arms wit...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.13561
更新日期:2018-02-01 00:00:00
abstract::Mitochondrial dysfunction has been suggested as a causal factor for insulin resistance and diabetes. Previously we have shown a decrease of mitochondrial DNA (mtDNA) content in tissues of diabetic patients. The mitochondrial proteins, which regulate the mitochondrial biogensis, including transcription and replication ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1338.009
更新日期:2005-05-01 00:00:00
abstract::To understand the molecular mechanism of endometrial differentiation we have initiated an analysis of the uteroglobin promoter. Uteroglobin is normally expressed in endometrial tissues under the control of ovarian hormones. In gene transfer experiments with the Ishikawa cell line, derived from a human endometrial aden...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1991.tb37851.x
更新日期:1991-01-01 00:00:00
abstract::Murine schistosomiasis mansoni is a parasitic disease in which flukes living in the portal vein of the host produce ova that deposit in the liver and intestines. In these organs, ova release antigens that induce chronic, focal granulomatous inflammation. IFN-gamma is an inflammatory cytokine important in macrophage ac...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1998.tb09592.x
更新日期:1998-05-01 00:00:00
abstract::Chronic purulent rhinosinusitis (CPR) is an inflammatory condition of unknown origin. Although various medical and surgical treatment modalities are available, 5-10% of patients remain refractory. Immune deficiency is one of the underlying risk factors for this disease. Earlier studies demonstrated disturbances in cel...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2012.06742.x
更新日期:2012-10-01 00:00:00
abstract::Sm-p80-based vaccine efficacy for Schistosoma mansoni was evaluated in a baboon model of infection and disease. The study was designed to replicate a human vaccine implementation scenario for endemic regions in which vaccine would be administered following drug treatment of infected individuals. In our study, the Sm-p...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/nyas.13866
更新日期:2018-08-01 00:00:00
abstract::Aged F344 female rats (21 months) showed decreased performance, as compared to young rats (4 months), on an object recognition memory task. Golgi impregnation measured dendritic spine density of pyramidal neurons in the prefrontal cortex (layer II-III), a brain area important for recognition memory. Densities of spine...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1379.026
更新日期:2007-02-01 00:00:00
abstract::Type 2 diabetes and obesity are major global public health problems, with migrant populations in high-income countries being particularly affected. Type 2 diabetes and obesity are also major threats in low- and middle-income countries, from which most migrant populations originate. Transitioning of societies and the r...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.13204
更新日期:2017-03-01 00:00:00
abstract::Processes that regulate quiescence, self-renewal, and differentiation of hematopoietic stem cells (HSCs) are not well understood. Owing, in part, to the ability of xenobiotic ligands to have persistent effects on the immune system in experimental animals, there has been much work to define a physiological role of the ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.12361
更新日期:2014-03-01 00:00:00
abstract::We hypothesize that stimulation of Na+-K+-Cl+ cotransporter (NKCC1) causes Na+ overload that may lead to reversal of Na+-Ca2+ exchanger isoform 1 (NCX1) and ischemic neuronal damage. NCX1 protein expression and Ca2+ influx via reversal of NCX were decreased by approximately 70% in NCX1+/- neurons. Compared to NCX1+/+ ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1387.016
更新日期:2007-03-01 00:00:00
abstract::Natural systems cannot be closed to the environment. At the same time there is a necessity for closure in order to build the system. It is this quint-essential tension between openness and closure that drives systems to unfold into further stages or levels of growth and development. In other words, the emergence of or...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2000.tb06268.x
更新日期:2000-01-01 00:00:00
abstract::The Sex combs reduced gene of the Antennapedia complex specifics the identities of the anterior thoracic and posterior head segments, including the primordium of the larval salivary gland. The Sex combs reduced transcription unit spans over 30 kb of genomic DNA, with another 40 kb of upstream cis-regulatory sequences....
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1998.tb09628.x
更新日期:1998-04-15 00:00:00
abstract::The success of embryonic implantation relies on an ideal cross-talk between the embryo and the receptive endometrium. This article focuses on the role of leukemia inhibitory factor (LIF) and its receptors in human embryo implantation. LIF is a secreted glycoprotein first described as a factor that induced the differen...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1196/annals.1335.020
更新日期:2004-12-01 00:00:00
abstract::Obesity and Type 2 diabetes are now major public health issues in developed nations and have reached epidemic proportions in many developing nations, as well as disadvantaged groups in developed countries, e.g., Mexican-Americans, African-Americans, and Australian Aborigines. These groups all show hyperinsulinemia and...
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.tb07783.x
更新日期:1999-11-18 00:00:00
abstract::Brazilian spotted fever (BSF) is a highly lethal disease caused by Rickettsia rickettsii. In the present study, rickettsial infection was evaluated in 669 Amblyomma aureolatum adult ticks collected from naturally infested dogs in Taiaçupeba, a BSF-endemic area in the state of São Paulo. Ten (1.49%) ticks were infected...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1374.103
更新日期:2006-10-01 00:00:00
abstract::The immunotherapeutic agent ipilimumab has helped address a significant unmet need in the treatment of advanced melanoma. Ipilimumab is a fully human monoclonal antibody that targets cytotoxic T-lymphocyte antigen-4 (CTLA-4), thereby augmenting antitumor immune responses. After decades in which a number of clinical tr...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.12180
更新日期:2013-07-01 00:00:00
abstract::A diagnostic test is particularly beneficial if it reveals the level of susceptibility prior to onset of a disease process. In the case of childhood caries, such a diagnostic test affords the opportunity for preventive measures to be implemented before caries begins. Salivary glycoproteins contain a wealth of individu...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1196/annals.1384.009
更新日期:2007-03-01 00:00:00
abstract::The repeated, intermittent use of cocaine and other drugs of abuse produces profound and often long-lasting alterations in behavior and brain chemistry. It has been suggested that these consequences of drug use play a critical role in drug craving and relapse to addiction. This article reviews the effects of psychosti...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.2001.tb03558.x
更新日期:2001-06-01 00:00:00
abstract::We have defined three sets of HLA-DR3(+) haplotypes that provide maximum risk of type 1 disease development in Indians: (1) a diverse array of B8-DR3 haplotypes, (2) A33-B58-DR3 haplotype, and (3) A2-B50-DR3 occurring most predominantly in this population. Further analysis has revealed extensive diversity in B8-DR3 ha...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/nyas.12019
更新日期:2013-04-01 00:00:00