bluuebunny/crossref_metadata_2025_split huggingface dataset:
S-Nitrosothiols modulate G protein-coupled receptor signaling in a reversible and highly receptor-specific manner
Authors: Kokkola Tarja , Savinainen Juha R , Mönkkönen Kati S , Retamal Montse Durán , Laitinen Jarmo T 
Published: April 2005

Abstract
Background
Recent studies indicate that the G protein-coupled receptor (GPCR) signaling machinery can serve as a direct target of reactive oxygen species, including nitric oxide (NO) and S-nitrosothiols (RSNOs). To gain a broader view into the way that receptor-dependent G protein activation – an early step in signal transduction – might be affected by RSNOs, we have studied several receptors coupling to the Gi family of G proteins in their native cellular environment using the powerful functional approach of [35S]GTPγS autoradiography with brain cryostat sections in combination with classical G protein activation assays.

Results
We demonstrate that RSNOs, like S-nitrosoglutathione (GSNO) and S-nitrosocysteine (CysNO), can modulate GPCR signaling via reversible, thiol-sensitive mechanisms probably involving S-nitrosylation. RSNOs are capable of very targeted regulation, as they potentiate the signaling of some receptors (exemplified by the M2/M4 muscarinic cholinergic receptors), inhibit others (P2Y12 purinergic, LPA1lysophosphatidic acid, and cannabinoid CB1 receptors), but may only marginally affect signaling of others, such as adenosine A1, μ-opioid, and opiate related receptors. Amplification of M2/M4 muscarinic responses is explained by an accelerated rate of guanine nucleotide exchange, as well as an increased number of high-affinity [35S]GTPγS binding sites available for the agonist-activated receptor. GSNO amplified human M4 receptor signaling also under heterologous expression in CHO cells, but the effect diminished with increasing constitutive receptor activity. RSNOs markedly inhibited P2Y12 receptor signaling in native tissues (rat brain and human platelets), but failed to affect human P2Y12 receptor signaling under heterologous expression in CHO cells, indicating that the native cellular signaling partners, rather than the P2Y12 receptor protein, act as a molecular target for this action.

Conclusion
These in vitro studies show for the first time in a broader general context that RSNOs are capable of modulating GPCR signaling in a reversible and highly receptor-specific manner. Given that the enzymatic machinery responsible for endogenous NO production is located in close proximity with the GPCR signaling complex, especially with that for several receptors whose signaling is shown here to be modulated by exogenous RSNOs, our data suggest that GPCR signaling in vivo is likely to be subject to substantial, and highly receptor-specific modulation by NO-derived RSNOs.
The Microbial Rosetta Stone Database: A compilation of global and emerging infectious microorganisms and bioterrorist threat agents
Authors: Ecker David J , Sampath Rangarajan , Willett Paul , Wyatt Jacqueline R , Samant Vivek , Massire Christian , Hall Thomas A , Hari Kumar , McNeil John A , Büchen-Osmond Cornelia , Budowle Bruce 
Published: April 2005

Abstract
Background
Thousands of different microorganisms affect the health, safety, and economic stability of populations. Many different medical and governmental organizations have created lists of the pathogenic microorganisms relevant to their missions; however, the nomenclature for biological agents on these lists and pathogens described in the literature is inexact. This ambiguity can be a significant block to effective communication among the diverse communities that must deal with epidemics or bioterrorist attacks.

Results
We have developed a database known as the Microbial Rosetta Stone. The database relates microorganism names, taxonomic classifications, diseases, specific detection and treatment protocols, and relevant literature. The database structure facilitates linkage to public genomic databases. This paper focuses on the information in the database for pathogens that impact global public health, emerging infectious organisms, and bioterrorist threat agents.

Conclusion
The Microbial Rosetta Stone is available at http://www.microbialrosettastone.com/. The database provides public access to up-to-date taxonomic classifications of organisms that cause human diseases, improves the consistency of nomenclature in disease reporting, and provides useful links between different public genomic and public health databases.
The Familial Intracranial Aneurysm (FIA) study protocol
Authors: Broderick Joseph P , Sauerbeck Laura R , Foroud Tatiana , Huston John , Pankratz Nathan , Meissner Irene , Brown Robert D 
Published: April 2005

Abstract

Background
Subarachnoid hemorrhage (SAH) due to ruptured intracranial aneurysms (IAs) occurs in about 20,000 people per year in the U.S. annually and nearly half of the affected persons are dead within the first 30 days. Survivors of ruptured IAs are often left with substantial disability. Thus, primary prevention of aneurysm formation and rupture is of paramount importance. Prior studies indicate that genetic factors are important in the formation and rupture of IAs. The long-term goal of the Familial Intracranial Aneurysm (FIA) Study is to identify genes that underlie the development and rupture of intracranial aneurysms (IA).

Methods/Design
The FIA Study includes 26 clinical centers which have extensive experience in the clinical management and imaging of intracerebral aneurysms. 475 families with affected sib pairs or with multiple affected relatives will be enrolled through retrospective and prospective screening of potential subjects with an IA. After giving informed consent, the proband or their spokesperson invites other family members to participate. Each participant is interviewed using a standardized questionnaire which covers medical history, social history and demographic information. In addition blood is drawn from each participant for DNA isolation and immortalization of lymphocytes. High- risk family members without a previously diagnosed IA undergo magnetic resonance angiography (MRA) to identify asymptomatic unruptured aneurysms. A 10 cM genome screen will be performed to identify FIA susceptibility loci. Due to the significant mortality of affected individuals, novel approaches are employed to reconstruct the genotype of critical deceased individuals. These include the intensive recruitment of the spouse and children of deceased, affected individuals.

Discussion
A successful, adequately-powered genetic linkage study of IA is challenging given the very high, early mortality of ruptured IA. Design features in the FIA Study that address this challenge include recruitment at a large number of highly active clinical centers, comprehensive screening and recruitment techniques, non-invasive vascular imaging of high-risk subjects, genome reconstruction of dead affected individuals using marker data from closely related family members, and inclusion of environmental covariates in the statistical analysis.
Sensori-motor adaptation to knee osteoarthritis during stepping-down before and after total knee replacement
Authors: Mouchnino L , Gueguen N , Blanchard C , Boulay C , Gimet G , Viton J-M , Franceschi J-P , Delarque A 
Published: April 2005

Abstract
Background
Stepping-down is preceded by a shift of the center of mass towards the supporting side and forward. The ability to control both balance and lower limb movement was investigated in knee osteoarthritis patients before and after surgery. It was hypothesized that pain rather than knee joint mobility affects the coordination between balance and movement control.

Methods
The experiment was performed with 25 adult individuals. Eleven were osteoarthritic patients with damage restricted to one lower limb (8 right leg and 3 left leg). Subjects were recruited within two weeks before total knee replacement by the same orthopedic surgeon using the same prosthesis and technics of surgery. Osteoarthritic patients were tested before total knee replacement (pre-surgery session) and then, 9 of the 11 patients were tested one year after the surgery when re-educative training was completed (post-surgery session). 14 adult individuals (men: n = 7 and women: n = 7) were tested as the control group.

Results
The way in which the center of mass shift forward and toward the supporting side is initiated (timing and amplitude) did not vary within patients before and after surgery. In addition knee joint range of motion of the leading leg remained close to normal before and after surgery. However, the relative timing between both postural and movement phases was modified for the osteoarthritis supporting leg (unusual strategy for stepping-down) before surgery. The "coordinated" control of balance and movement turned to be a "sequential" mode of control; once the body weight transfer has been completed, the movement onset is triggered. This strategy could be aimed at shortening the duration-time supporting on the painful limb. However no such compensatory response was observed.

Conclusion
The change in the strategy used when supporting on the arthritis and painful limb could result from the action of nociceptors that lead to increased proprioceptor thresholds, thus gating the proprioceptive inputs that may be the critical afferents in controlling the timing of the coordination between balance and movement initiation control.
Being uninformed on informed consent: a pilot survey of medical education faculty
Authors: Mavis Brian E , Henry Rebecca C 
Published: April 2005

Abstract
Background
This paper describes a pilot survey of faculty involved in medical education. The questionnaire focuses on their understanding of IRB policies at their institution, specifically in relation to the use of student assessment and curriculum evaluation information for scholarship.

Methods
An anonymous survey was distributed to medical educators in a variety of venues. Two brief scenarios of typical student assessment or curriculum evaluation activities were presented and respondents were asked to indicate their likely course of action related to IRB approval. The questionnaire also asked respondents about their knowledge of institutional policies related to IRB approval.

Results
A total of 121 completed surveys were obtained; 59 (50%) respondents identified themselves as from community-based medical schools. For the first scenario, 78 respondents (66%) would have contact with the IRB; this increased to 97 respondents (82%) for the second scenario. For both scenarios, contact with the IRB was less likely among respondents from research-intensive institutions. Sixty respondents (55%) were unsure if their institutions had policies addressing evaluation data used for scholarship. Fifty respondents (41%) indicated no prior discussions at their institutions regarding IRB requirements.

Conclusion
Many faculty members are unaware of IRB policies at their medical schools related to the use of medical student information. To the extent that policies are in place, they are highly variable across schools suggesting little standardization in faculty understanding and/or institutional implementation. Principles to guide faculty decision-making are provided.
Endemic malaria: an 'indoor' disease in northern Europe. Historical data analysed
Authors: Huldén Lena , Huldén Larry , Heliövaara Kari 
Published: April 2005

AbstractBackgroundEndemic northern malaria reached 68°N latitude in Europe during the 19thcentury, where the summer mean temperature only irregularly exceeded 16°C, the lower limit needed for sporogony ofPlasmodium vivax. Because of the available historical material and little use of quinine, Finland was suitable for an analysis of endemic malaria and temperature.MethodsAnnual malaria death frequencies during 1800–1870 extracted from parish records were analysed against long-term temperature records in Finland, Russia and Sweden. Supporting data from 1750–1799 were used in the interpretation of the results. The life cycle and behaviour of the anopheline mosquitoes were interpreted according to the literature.ResultsMalaria frequencies correlated strongly with the mean temperature of June and July of the preceding summer, corresponding to larval development of the vector. Hatching of imagoes peaks in the middle of August, when the temperature most years is too low for the sporogony ofPlasmodium. After mating some of the females hibernate in human dwellings. If the female gets gametocytes from infective humans, the development ofPlasmodiumcan only continue indoors, in heated buildings.ConclusionNorthern malaria existed in a cold climate by means of summer dormancy of hypnozoites in humans and indoor transmission of sporozoites throughout the winter by semiactive hibernating mosquitoes. Variable climatic conditions did not affect this relationship. The epidemics, however, were regulated by the population size of the mosquitoes which, in turn, ultimately was controlled by the temperatures of the preceding summer.
The importance of APC
Authors: Ablamunits Vitaly 
Published: April 2005

Abstract
Readers in immunology are familiar with the importance of antigen presenting cells in mounting immune responses. For the purpose of this particular editorial article, however, the abbreviation APC will stand for article processing charges. The publisher will introduce APCs for this Journal in May, 2005. Here we explain why article-processing charges are important to maintain our Open Access journal.
Roy Walford and the immunologic theory of aging
Authors: Effros Rita B 
Published: April 2005

Abstract
Roy Walford died on April 27, 2004, at the age of 79. His contributions to gerontological research in such diverse areas as caloric restriction, genetics of lifespan, immunosenescence, DNA repair and replicative senescence were truly remarkable in their depth and innovation. Significantly, most of the areas that he pioneered during his illustrious research career remain the "hot" areas of current gerontological research. In this sense, he has achieved the most important type of immortality. His death was a major personal and professional loss to numerous scientists within the gerontological community. In launching this new journal on Immunity and Ageing, it is highly fitting, therefore, to remember him on the anniversary of his death by briefly reviewing the contributions of Roy Walford to this important facet of gerontology. Indeed, it was Roy who actually first coined the commonly used term "immunosenescence".
The use of a mini bypass system (Cobe Synergy) without venous and cardiotomy reservoir in a mitral valve repair: a case report
Authors: Huybregts M AJM , de Vroege R , Christiaans H MT , Smith A L , Paulus R CE 
Published: April 2005

The use of mini cardiopulmonary bypass circuits is an emerging technology. The venous and cardiotomy reservoir have been excluded from the circuit. This results in a reduction of the blood contact surface area and of the priming volume. Entrainment of venous air, however, remains a drawback in the widespread acceptance of using these mini circuits. The technique described resolves this problem by automatic removal of venous air, and explains how this mini cardiopulmonary bypass circuit was utilized on a 64-year-old female presented for a mitral valve repair. In the absence of a cardiotomy reservoir, an autotrans-fusion cell separator was used to process shed blood and, after CPB, the residual pump blood. This mini bypass circuit, with the safety feature to remove automatically venous air, provided an additional degree of protection. In our experience, mini bypass circuits allow us safely to perform cardiopulmonary bypass during valve procedures.
Protein Expression of a Triad of Frequently Methylated Genes, p73, p57Kip2, and p15, Has Prognostic Value in Adult Acute Lymphocytic Leukemia Independently of Its Methylation Status
Authors: Bueso-Ramos Carlos , Xu Yunling , McDonnell Timothy J. , Brisbay Shawn , Pierce Sherry , Kantarjian Hagop , Rosner Gary , Garcia-Manero Guillermo 
Published: April 2005

Purpose To study the relationship between protein expression and DNA methylation of a triad of cell-cycle regulatory genes known to be frequently methylated in adult acute lymphocytic leukemia (ALL). Patients and Methods Protein expression of p73, p15, and p57Kip2 was analyzed by immunohistochemistry using a tissue microarray (TMA) platform. The TMA was constructed using pretreatment bone marrow biopsy specimens from 64 adult patients with ALL. Protein expression was then correlated with DNA methylation and relevant clinical biologic characteristics. Results p73 protein expression was observed in 19 (30%) patients, cytoplasmic p15 in 19 (31%), and p57 in 40 (70%). Three patients (5%) had expression of all three proteins, 16 (29%) of two proteins, 31 (55%) of one protein, and six (11%) of zero proteins. An inverse association was observed between p73 DNA methylation and protein expression (P = .003). This effect was not observed for either p15 or p57Kip2. Expression of any of the proteins studied was not associated with any distinct biologic characteristic. By multivariate analysis, expression of p57Kip2, cytoplasmic p15, or a combination of p57Kip2 with either p15 or p73 was associated with a better overall survival (P < .001, .04, and .03 respectively). Conclusion Expression of a triad of cell cycle regulatory proteins that includes p73, p15, and p57Kip2 has prognostic value in adult patients with ALL independently of the methylation status of each gene.
Agreement Between Self-Reported Breast Cancer Treatment and Medical Records in a Population-Based Breast Cancer Family Registry
Authors: Phillips Kelly-Anne , Milne Roger L. , Buys Saundra , Friedlander Michael L. , Ward John H. , McCredie Margaret R.E. , Giles Graham G. , Hopper John L. 
Published: April 2005

Purpose Although self-report data on treatment for breast cancer are collected in some large epidemiologic studies, their accuracy is unknown. Methods As part of a population-based Breast Cancer Family Registry, questionnaires on initial breast cancer treatment and subsequent recurrence were mailed to Australian women diagnosed between 1991 and 1998. These self-report data were validated against medical records for 895 women. Results The median recall period was 3.2 years, mean age at diagnosis was 44 years, and 81% of women had early-stage breast cancer. Agreement between the two data sources was very high for general questions about type of treatment (100%, 99%, 99%, and 94% for surgery, radiotherapy, chemotherapy, hormonal therapy, respectively). For more specific questions about details of each treatment received, agreement was: for radiation therapy, 96% and 99% for radiation to the breast and chest wall, respectively; for surgery, 83%, 97%, and 88% for lumpectomy, mastectomy, and lymph node dissection, respectively; for hormonal therapy, 94% for tamoxifen; and for chemotherapy, range between 76% and 93%. There was 97% agreement about whether there had been a recurrence, and agreement about the location of recurrence was at least 90% for all sites. Agreement regarding stage at diagnosis was 62%, with discrepancies mostly due to women with locoregional disease incorrectly reporting distant spread. Conclusion This self-report questionnaire can be used to collect accurate data on broad categories of initial breast cancer treatment and recurrence, and even for more detailed information on specifics of treatment and site of recurrence.
Role of Uncal Resection in Optimizing Transsylvian Access to the Basilar Apex: Cadaveric Investigation and Preliminary Clinical Experience in Eight Patients
Authors: Post Nicholas , Russell Stephen M. , Jafar Jafar J. 
Published: April 2005

Abstract

OBJECTIVE:
The pretemporal approach has gained popularity for the treatment of basilar apex aneurysms. However, it requires the sacrifice of anterior temporal bridging veins to allow posterior temporal lobe retraction and, for patients with dominant pretemporal venous drainage, has the attendant risk of venous hypertension, hemorrhagic venous infarction, or seizures postoperatively. Alternatively, we have found that splitting the sylvian fissure, resecting the uncus, and applying posterolateral retraction to the medial temporal lobe provides a similar exposure to the basilar apex while preserving the anterior temporal bridging veins. To evaluate the transsylvian, trans-uncal approach to the basilar apex, we report our initial clinical results using this exposure in eight consecutive patients. A morphometric cadaveric analysis comparing this approach with the pretemporal approach was also performed.

METHODS:
For the clinical study, all hospital charts and imaging studies were retrospectively reviewed for patients undergoing the transsylvian, trans-uncal approach for the treatment of an upper basilar trunk aneurysm between July 2000 and July 2002. In the anatomic study, six formalin-fixed cadaver specimens were used. Two sequential exposures of the basilar apex were performed on each specimen side. First, the pretemporal exposure was performed with anteroposterior temporal lobe retraction. Next, after the temporal lobe had been allowed to return to normal anatomic position, the retractor was repositioned on the medial aspect of the temporal lobe superficial to the uncus, and a 10 × 10 × 15-mm volume of uncus was removed. Morphometric measurements were performed for each exposure.

RESULTS:
Four basilar bifurcation and four superior cerebellar segment aneurysms in eight consecutive patients were successfully clip-ligated by use of the transsylvian, trans-uncal approach. All patients had temporal bridging veins that were preserved, as documented by angiography and operative reports. No patient developed a venous infarction or new postoperative seizures, with a mean follow-up of 9.75 months (range, 0.5–28 mo). The cadaveric analysis revealed that in addition to providing a similar exposure of the upper basilar complex, the transsylvian, trans-uncal approach provided additional exposure of the ipsilateral posterior cerebral and superior cerebellar arteries compared with the pretemporal approach.

CONCLUSION:
When approaching the basilar bifurcation, the transsylvian, trans-uncal approach provides superior exposure of the ipsilateral superior cerebellar and posterior cerebral arteries compared with the pretemporal approach, while preserving the anterior temporal bridging veins. This approach is most valuable in patients with dominant temporal venous drainage or when additional exposure of the ipsilateral posterior cerebral or superior cerebellar arteries is required.