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131.
132.
Sandra Elizabeth Goñi Javier Alonso Iserte Betina Inés Stephan Cristina Silvia Borio Pablo Daniel Ghiringhelli Mario Enrique Lozano 《Virus genes》2010,40(3):320-328
The Junín virus strain Candid#1 was developed as a live attenuated vaccine for Argentine hemorrhagic fever. In this article,
we report sequence information of the L and S RNAs of Junín virus Candid#1 and XJ#44 strains, and show the comparisons with
the XJ13 wild-type strain and with other Junín virus strains, like Romero, IV4454 and MC2 strains, and other closely and distantly
related arenaviruses. Comparisons of the nucleotide and amino acid sequences of all genes of three strains from the same vaccine
genealogy, revealed different point mutations that could be associated with the attenuated phenotype. A 91% of the mutations
found are consistent with a hypothesis of progressive attenuation of virulence from XJ13 to XJ#44 and to Candid#1; 39% of
mutations were observed in XJ#44 and conserved in Candid#1, while another 52% of the mutations appeared only in Candid#1 strain.
The remaining 9% corresponded to reverse mutations in the L gene. In summary, the present work shows a set of mutations that
could be related to the virulence attenuation phenomenon. This information will serve as a starting point to study this biological
phenomenon, provided that a reverse genetics system for Junín virus is developed to allow the generation of infectious virions
with specific mutations. 相似文献
133.
Luciana Ferreira Cardoso Assuiti Gabriela Marcellino de Melo Lanzoni Fabiana Cristine dos Santos Alacoque Lorenzini Erdmann Betina Hörner Schlindwein Meirelles 《Revista brasileira de otorrinolaringologia (English ed.)》2013,79(2):248-255
The current scientific literature reports on the incidence of hearing impairments due to HIV/AIDS, and the hearing changes can occur due to damage to the outer, middle or inner ear. Thus, it is important to study how these changes occur, the hearing loss and their associations with the HIV/AIDS infection.ObjectiveTo identify the factors related to hearing loss in people with HIV/AIDS in the global scientific literature.MethodStudy carried out an Integrative Review of the Literature. The key words used were: hearing loss, hearing disorders and deafness, separately associated to the keyword HIV on PUBMED, ScIELO, LILACS and ISI databases. We used complete original papers, of free access, in English, Spanish, French and Portuguese. Thirteen quantitative studies from 1994-2010 were selected.ConclusionWe did not find any strong direct association between anti-retroviral therapy and hearing loss; however, there are indications of hearing loss in the population studied, and their associations and causes need to be better investigated. 相似文献
134.
Vinner L Holmgren B Jensen KJ Esbjornsson J Borggren M Hentze JL Karlsson I Andresen BS Gram GJ Kloverpris H Aaby P Da Silva ZJ Fenyö EM Fomsgaard A 《APMIS : acta pathologica, microbiologica, et immunologica Scandinavica》2011,119(8):487-497
For a CD8 epitope-based vaccine to match different geographic locations, the targeted epitopes for cytotoxic T-lymphocytes (CTLs) must be present in the local circulating HIV-1 strains. Secondly, the vaccine epitopes should match the host population HLA types. We characterized two new HIV-1 isolates from Guinea-Bissau. Also, we have identified 15 subdominant CD8 epitopes representing common HLA super-types theoretically covering most HLA alleles in any population. Herein we demonstrate that the selected vaccine epitopes are well conserved and simultaneously present in sequences from West Africa and Denmark. Use of the selected epitopes will likely ensure ≥10 immune targets in the majority of candidates for experimental therapeutic vaccination in both geographic regions. Our results warrant testing of the selected vaccine epitopes in both geographic locations. 相似文献
135.
Joseph S. Antoun Leon J. Steenberg Kai H. Lee 《The British journal of oral & maxillofacial surgery》2011,49(3):213-216
Facial injuries caused by horses are relatively common among riding enthusiasts, but little is known about the nature of maxillofacial fractures sustained by those not mounted. We collected data on patients’ characteristics, fractures sites, mechanisms of injury, and treatment of these fractures from the departmental records of the oral and maxillofacial unit at Christchurch Hospital, New Zealand between 1996 and 2008. Of 49 patients with equine-related facial fractures, 35 (mean (SD) age 35.8 (16.7) years) had sustained their injuries while unmounted (71%). Most of the fractures occurred in women (66%), of whom 39% were aged between 16 and 30 years. There was an increasing trend in the incidence of these fractures over much of the 13-year period. Most injuries were caused by kicks (69%), followed by head-butts (26%), and trampling (6%). The zygoma was the most common fracture site (63%), followed by the mandible (34%), and orbital floor (31%). Surgical intervention was required in 60% of cases. 相似文献
136.
137.
Pacheco AG Saraceni V Tuboi SH Lauria LM Moulton LH Faulhaber JC King B Golub JE Durovni B Cavalcante S Harrison LH Chaisson RE Schechter M 《AIDS research and human retroviruses》2011,27(1):25-28
Non-HIV-related causes of death have been increasing after the introduction of highly active antiretroviral therapy. Underlying and contributing causes of death were assessed in respect to the presence/absence of HIV/AIDS among HIV-infected/AIDS patients in Rio de Janeiro, Brazil. Demographic variables (age, gender, ethnicity, and schooling) and CD4?cell counts closest to death were assessed through logistic regression models comparing those who did not have with those who had HIV/AIDS mentioned on the death certificate. The linkage with the two cohorts identified 1249 records, of which 370 (29.6%) did not have HIV/AIDS listed on any field of the death certificate [77 (20.8%) attributed to undefined and 72 (19.5%) to external causes]. After excluding external causes, 25.3% still did not have HIV/AIDS listed on the death certificate. Multiple logistic regression analysis showed that age >40 years (OR?=?2.09; 95%CI?=?1.49-2.93; p?0.001) and CD4?cell count closest to the date of death (OR?=?1.15; 95% CI?=?1.07-1.23; p?0.001 for 100?cell increase) were associated with an increased probability of not having HIV/AIDS mentioned on the death certificate, when external causes were excluded. Mortality among HIV-infected individuals is underreported in the Rio de Janeiro Mortality Registry, particularly among older individuals and those with higher CD4 counts. Physicians should be aware of the changing patterns of mortality among HIV individuals, and public health officials should regularly perform linkages between all-cause mortality and available HIV-infected patients databases, such as AIDS registries and large cohort studies. 相似文献
138.
Polisseni F Gon?alves Júnior H Vidal VR Macedo FL Lins BD Campos JD Mattos NA 《Revista brasileira de ginecologia e obstetrícia》2011,33(8):214-220
Hyperandrogenic syndromes include diseases that manifest through an increased biological activity of androgens and that can originate from neoplastic or functional diseases. Androgen-secreting ovarian tumors represent about 1% of ovarian neoplasias. Steroid cell tumors are among the more rare types which account for less than 0.1% of all ovarian tumors. They are usually benign, of small dimensions and unilateral. We report here a rare case of a unilateral steroid cell tumor. A 60-year-old woman was seen after four months of evolution of hirsutism, clitoris hypertrophy and elevation of serum estradiol levels. Her total testosterone and 17-OH-progesterone levels were also increased. 相似文献
139.
Eduardo Adrian Leiderman Gustavo Vazquez Candela Berizzo Ana Bonifacio Noelia Bruscoli Juan I. Capria Betina Ehrenhaus Manuel Guerrero Maria Guerrero Maria Lolich Roumen Milev 《Social psychiatry and psychiatric epidemiology》2011,46(4):281-290
Objective
The purpose of our study was to assess the knowledge, social distance and perception of social discrimination towards persons with schizophrenia in the general adult population of Buenos Aires, Argentina.Methods
One thousand two-hundred fifty-four persons were surveyed at different neighborhoods of the city of Buenos Aires. Their knowledge about schizophrenia, personal social distance and perception of social discrimination were assessed with several questions. Afterwards, a scale for each one of these measures was built.Results
Almost half of the general population believed that patients with schizophrenia suffer from split personality and that most of them are dangerous and violent. Knowledge about schizophrenia in the general population was moderate and it was associated with age and education. Almost 80% of the population had less than one-third of the maximum possible social distance score, but their perception of social discrimination was high. Social distance was greater in the elderly. Knowledge was correlated weakly with social distance. Respondents directly related with patients suffering from schizophrenia were more knowledgeable about the illness, but had the same social distance and perception of social discrimination than the rest of the general population.Conclusions
The persons surveyed felt their own attitudes are more favorable to people with schizophrenia than ??most other people??s?? attitudes. The elderly should be specifically addressed in specially designed anti-stigma campaigns. 相似文献140.
Rositsa Poryazova Betina Schnepf Esther Werth Ramin Khatami Ulrike Dydak Dieter Meier Peter Boesiger Claudio L. Bassetti 《Sleep》2009,32(5):607-613