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1.
AIDS Behav ; 24(4): 1170-1180, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31832854

RESUMO

Evidence suggests priorities differ between patients in HIV care and their providers regarding topics most important to address in care. At five U.S. sites, we asked patients and providers to prioritize 25 potential topic areas to address during routine visits, and invited patients to discuss selection rationale. Patients (n = 206) and providers (n = 17) showed high discordance in rank order priorities (X2 (24, 223) = 71.12; p < 0.0001). Patients ranked social domains such as HIV stigma highly; a higher proportion of providers prioritized substance use domains. HIV stigma was a higher priority for patients in care fewer than 6 years (Fisher's exact p = 0.0062), nonwhite patients (Fisher's exact p = 0.0114), and younger patients (Fisher's exact p = 0.0281). Patients' priorities differed between men and women (X2 (24, 188) = 52.89; p < 0.0001), white race vs. other races (X2 (24, 206) = 48.32; p = 0.0023), and Latinos vs. non-Latinos (X2 (24, 206) = 48.65; p = 0.0021). Interviews (n = 79) revealed perceived impact of social context on health and health behaviors.


Assuntos
Infecções por HIV , Estigma Social , Feminino , Objetivos , Infecções por HIV/tratamento farmacológico , Comportamentos Relacionados com a Saúde , Hispânico ou Latino , Humanos , Masculino , Relações Profissional-Paciente , População Branca
2.
AIDS Care ; 31(sup1): 1-9, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31189333

RESUMO

Low perceived social support (SS) negatively impacts health outcomes. We developed a measure of perceived SS for use in HIV care. We sought and categorized legacy items, selecting strongest items within categories. We elicited SS concepts from patients in English/Spanish, coded transcripts to match item pool content, and developed new items for salient unrepresented content. In focus groups, patients prioritized highly-matched items. We conducted cognitive interviews on high-priority items, and validity testing on final items against two legacy measures. From interviews (n = 32), we matched the following concepts: sense of belonging/inclusion; communication; emotional support; feeling accepted by others as a person; companionship; and practical support. We identified a new concept: support from friends/family in remaining healthy. Focus groups (n = 23) prioritized emotional support, communication, and support to remain healthy. Cognitive interviews (n = 30) found items were well-understood. The final 8-item measure performed well with patients (n = 708), with good construct validity. We used an Item Response Theory program to create a 3-item Short Form version of the measure, which captures 96% of patients indicating low social support. We developed the Multifactoral Assessment of Perceived Social Support (MAPSS) and Short Form (MAPSS-SF); brief, clinically relevant, sufficiently unidimensional measures of SS for use in HIV care.


Assuntos
Infecções por HIV/psicologia , Medidas de Resultados Relatados pelo Paciente , Pacientes/psicologia , Psicometria/métodos , Qualidade de Vida/psicologia , Apoio Social , Inquéritos e Questionários/normas , Adulto , Feminino , Grupos Focais , Infecções por HIV/diagnóstico , Nível de Saúde , Humanos , Relações Interpessoais , Masculino , Pessoa de Meia-Idade , Psicometria/instrumentação
3.
Clin Lab ; 62(4): 735-8, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27215096

RESUMO

BACKGROUND: Screening for urine proteins is recommended for the detection of albuminuria in high risk groups. The aim of this study was to compare the Clinitek Atlas PRO12 reagent urine strip with quantitative methods for the determination of protein/creatinine ratio and to evaluate the usefulness of the semi-quantitative Clinitek Atlas PRO12 reagent urine strip as a tool in the early detection of albuminuria among the general population. METHODS: Six hundred first morning urine specimens were collected from outpatients with various clinical conditions. RESULTS: The results showed that the test data for the urine dipstick Clinitek Atlas PRO12 show good agreement with the quantitative measurement of protein, creatinine and protein/creatinine ratio. In addition, this study shows that 97.2% of the samples which gave "normal" protein/creatinine ratios by the semi-quantitative method, showed albumin/creatinine ratio < 30 mg/g by the quantitative methods. CONCLUSIONS: Our results show that Clinitek Atlas PRO12 reagent strips can be used for the purposes of albuminuria screening in the general population.


Assuntos
Albuminúria/diagnóstico , Creatinina/urina , Fitas Reagentes , Feminino , Humanos , Masculino
4.
Acta Gastroenterol Latinoam ; 45(2): 110-6, 2015 Jun.
Artigo em Espanhol | MEDLINE | ID: mdl-26353460

RESUMO

Recommendations for Hepatitis C screening based on risk factorsfor transmission proved to be ineffcient. Accordingly, the CDC recommended to screen all American individuals born between 1945-1965, based on data from population prevalence of infection. The effectiveness of implementing these recommendations in other contexts and/or populations can be estimated, in principle, knowing the age distribution of infected individuals. There is no data on population prevalence in our country. Yet we can know the age distribution of cases of Hepatitis C who accessed the health system. The aim of this paper is to analyze the distribution by birth cohort ofcases registered as "Hepatitis C" in the Sentinel Units for Viral Hepatitis in the 2007-2014 period. This will contribute to the identification, if any, ofa cohort in which case the recommendation of screening could be addressed, based on risk factors inherent to our country and our epidemiological reality. The age distribution of our cases was wider and younger than those of the population supporting the recommendation of the CDC and this suggests -beyond the difference in the populations being compared- is due to a range of risk factors and age at different infection between USA and Argentina. Thus, based on these results, the recommendation of the Argentine Consensus for Hepatitis C in 2013 to screen all individuals once in life is supported.


Assuntos
Hepatite C/epidemiologia , Vigilância de Evento Sentinela , Adolescente , Adulto , Distribuição por Idade , Idoso , Idoso de 80 Anos ou mais , Argentina/epidemiologia , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Fatores de Risco , Adulto Jovem
5.
Ann Hepatol ; 13(5): 496-502, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25152981

RESUMO

INTRODUCTION: Hepatitis E is a disease of global distribution, with significant morbidity and mortality, whose scope and burden continue to emerge in low endemic countries. MATERIAL AND METHODS: In 2012, we studied the prevalence of anti-HEV antibodies in 202 adult serum samples. We also analyzed samples from 143 patients with acute non-A-C hepatitis from January 2011 to December 2013. Acute HEV infections were diagnosed with anti-HEV IgM and/or HEV RNA. HEV RNA was also investigated in 94 swine fecal samples. HEV RNA was sequenced and characterized. RESULTS: We found higher values of prevalence than those previously reported in the 1990s. The overall prevalence of anti-HEV IgG antibodies was 15.4%. The prevalence was 10.6% in the 123 adults voluntarily screened on World Hepatitis Day 2012 in Buenos Aires city and 14.8, 16.7 and 35.7% respectively in the smaller groups of healthcare workers, blood donors and HIV-positive patients from different regions of the country. Nine acute HEV infections were diagnosed in the three years analyzed. We characterized new human variants of subgenotype 3a and 3i. New subgenotype 3i variants were found in swine from two distant provinces closely related to the human ones. CONCLUSIONS: These results enlarge the knowledge of HEV and contribute with new information. However, higher values of prevalence found in small groups need to be confirmed in larger studies. Many aspects of the spectrum of the disease and the reservoirs and routes of transmission are still unknown and thus deserve additional research.


Assuntos
Anticorpos Anti-Hepatite/sangue , Vírus da Hepatite E/imunologia , Hepatite E/diagnóstico , Hepatite E/veterinária , Imunoglobulina M/sangue , Doenças dos Suínos/diagnóstico , Adolescente , Adulto , Idoso , Animais , Argentina/epidemiologia , Biomarcadores/sangue , Fezes/virologia , Feminino , Genótipo , Hepatite E/sangue , Hepatite E/epidemiologia , Hepatite E/imunologia , Vírus da Hepatite E/genética , Humanos , Técnicas Imunoenzimáticas , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prevalência , RNA Viral/sangue , Kit de Reagentes para Diagnóstico , Estudos Soroepidemiológicos , Testes Sorológicos , Suínos , Doenças dos Suínos/sangue , Doenças dos Suínos/imunologia , Fatores de Tempo , Carga Viral , Adulto Jovem
6.
Ann Hepatol ; 13(3): 404-6, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24756019

RESUMO

By using molecular surveillance of hepatitis A virus, we characterized for the first time a subgenotype IB imported case in Argentina, a country with universal vaccination since 2005. The case was a crew member of a cruise ship. We consider this a case alert because of its multiple implications.


Assuntos
Vírus da Hepatite A/genética , Hepatite A/epidemiologia , Viagem , Adulto , Argentina/epidemiologia , Hepatite A/prevenção & controle , Vacinas contra Hepatite A/uso terapêutico , Humanos , Masculino , Epidemiologia Molecular , Reação em Cadeia da Polimerase Via Transcriptase Reversa
7.
Transpl Immunol ; 82: 101990, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-38199268

RESUMO

OBJECTIVES: Tacrolimus (TAC) is the most widely used immunosuppressive agent after lung transplantation. Considering that the ciliary beat frequency (CBF) mainly depends on the cytoplasmic calcium concentration and that TAC can affect this due to its binding with the intracellular immunophilin FKBP12, we hypothesized that TAC could also impair the airway mucociliary clearance of rats. METHODS: Sixty rats were divided into two groups (n = 30 each): Control = water; TAC = tacrolimus. After 7, 15 or 30 days of treatment, ten animals from each group were euthanized and the following parameters were studied: mucus transportability, CBF, mucociliary transport velocity (MCTV), and neutral and acid mucus production. RESULTS: There was a significant decrease in CBF (Control vs TAC: 7 days, p = 0.008; 15 days, p = 0.007; 30 days, p = 0.001) and MCTV (Control vs TAC: 7 days, p = 0.004; 15 days, p < 0.001; 30 days, p < 0.001) in all immunosuppressed animals. TAC therapy also caused an increase in acid mucus production at all treatment times (Control vs TAC: 7 days, p = 0.001; 15 days, p = 0.043; 30 days, p = 0.001). CONCLUSIONS: TAC impairs airway mucociliary clearance of rats.


Assuntos
Transplante de Pulmão , Tacrolimo , Ratos , Animais , Tacrolimo/uso terapêutico , Depuração Mucociliar , Ratos Wistar , Imunossupressores/uso terapêutico
8.
Acta Gastroenterol Latinoam ; 43(1): 22-30, 2013 Mar.
Artigo em Espanhol | MEDLINE | ID: mdl-23650830

RESUMO

In Argentina, the four strategies of epidemiological surveillance from the National System of Health Surveillance (SNVS) are Diseases of Mandatory Report (C2), Sentinel Units (SU), Laboratory Surveillance (SIVILA) and National Programs (National Plan of Blood, information from blood banks). They collect information about viral hepatitis (VH). The objective of this work was to analyze the information recorded by the SUs of VH for hepatitis B and C in the period between January 1th 2007 and December 31h 2010. In this period, out of the 1,769 cases recorded (entered by 21 of 24 SUs), 806 entries were hepatitis B, 848 hepatitis C and 115 belonged to other definitions. The relative proportions between hepatitis B and hepatitis C were heterogeneous between the SUs. The age distribution was homogeneous, being the predominant group in acute hepatitis B the 25- to 34-year-old group. In hepatitis C, the age distribution was broader. The distribution by sex and risk factors was heterogeneous between the different SUs. In hepatitis C, genotype 1 was the predominant one. In conclusion, the information provided by the SUs contributes as an evidence of the public health problem posed by this pathology in our country.


Assuntos
Hepatite B/epidemiologia , Hepatite C/epidemiologia , Vigilância de Evento Sentinela , Adulto , Distribuição por Idade , Argentina/epidemiologia , Notificação de Doenças , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Distribuição por Sexo
9.
J Cancer ; 14(13): 2444-2454, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37670964

RESUMO

Objective: The location of the primary tumor in colorectal cancer (CRC) could be a prognostic factor related to survival. However, its usefulness has not been sufficiently analyzed. The results in patients with tumors in initial stages are very limited, and there are descriptive parameters of survival that have not been analyzed in detail. In this study, the relationship between primary tumor location and survival in CRC patients was analyzed. Materials And Methods: This was a retrospective observational study. All patients treated consecutively for CRC between January 2005 and December 2019 in the same hospital center were included. Overall survival (OS), cancer-related survival (CRS), time to recurrence (TTR), relapse-free survival (RFS) and postrecurrence survival (PRS) were analyzed, and the results were classified by tumor stage. The results were compared among patients with right colon (RS), left colon (LS) and rectal tumors. Results: In the entire cohort, patients with RS tumors had lower OS and lower CRS at 60 months after diagnosis than did patients with LS or rectal tumors. In the regression analysis, the localization of the primary tumor was an independent prognostic indicator for OS and CRS. Analysis by tumor stage showed that patients with RS stage III tumors had lower OS and lower CRS at 60 months than did patients with LS and rectal tumors (42%, 59% and 53%, respectively, p = 0.006; and 48%, 63% and 57%, respectively, p = 0.025). Additionally, patients with RS Stage IV tumors had lower OS and lower CRS at 36 months than did patients with LS and rectal tumors (9%, 24%, 24%, respectively, p < 0.001; and 10%, 24% and 24%, respectively, p < 0.001). No differences were found in TTR and RFS among patients with stage I and II RS, LS, and rectal tumors. In contrast, patients with stage RS III tumors had significantly poorer PRS (9% for RS tumors, 13% for LS tumors, and 22% for rectal tumors) (p < 0.001). Conclusion: The location of the primary tumor in patients with CRC is related to survival. The effect of laterality is more marked in patients with stage III and IV tumors. Patients with RS tumors had lower OS and CRS due to the lower survival of patients with stage IV RS tumors and lower PRS for patients with stage III tumors.

11.
Pediatr Crit Care Med ; 11(3): 385-9, 2010 May.
Artigo em Inglês | MEDLINE | ID: mdl-20101195

RESUMO

OBJECTIVES: To investigate the detection of hepatitis A virus ribonucleic acid in patients with acute liver failure and to assess if the results have any clinical implications for the evolution of acute liver failure in children. Hepatitis A infection, a vaccine-preventable disease, is an important cause of acute liver failure in children in Argentina. Universal vaccination in 1-yr-old children was implemented in June 2005. DESIGN: Observational study in which patients were divided into Group 1 consisting of positive hepatitis A virus ribonucleic acid and Group 2 consisting of negative hepatitis A virus ribonucleic acid. SETTING: Pediatric intensive care unit in National Pediatric Hospital "Dr. J. P. Garrahan," Buenos Aires, Argentina. PATIENTS: Thirty-three patients with the diagnosis of acute liver failure secondary to hepatitis A virus infection and admitted to the Garrahan Pediatric Hospital between September 2003 and September 2005 were enrolled in the study. Twenty of these children were admitted to the pediatric intensive care unit. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Samples for total ribonucleic acid detection and genotyping were obtained from serum and/or stools on admission. We found positive hepatitis A virus ribonucleic acid in 13 patients and negative hepatitis A virus ribonucleic acid in 20 patients. The following clinical variables were evaluated: time of evolution, hospital stay, admission to the pediatric intensive care unit, pediatric intensive care unit stay, time on mechanical ventilation, criteria for orthotopic liver transplantation, and mortality. Characterization of the isolates did not reveal differences related to genotype; all cases were IA. No statistical significance was found as to the variables. However, positive hepatitis A virus ribonucleic acid showed lower percentages of pediatric intensive care unit admissions, criteria for orthotopic liver transplantation, number of orthotopic liver transplantation, and mortality than the group of patients with negative hepatitis A virus ribonucleic acid. CONCLUSIONS: Hepatitis A virus genotyping studies did not show any particularities, all cases were IA and, thus, apparent associations between genotype and the clinical presentation of acute liver failure could not be found.


Assuntos
Genótipo , Vírus da Hepatite A/genética , Vírus da Hepatite A/isolamento & purificação , Hepatite A/diagnóstico , Falência Hepática Aguda/etiologia , RNA/sangue , Adolescente , Argentina/epidemiologia , Criança , Pré-Escolar , Fezes/virologia , Feminino , Hepatite A/epidemiologia , Humanos , Lactente , Unidades de Terapia Intensiva Pediátrica , Falência Hepática Aguda/virologia , Masculino , Observação
12.
Liver Int ; 28(1): 47-53, 2008 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-18028318

RESUMO

BACKGROUND: Hepatitis A infection, a vaccine-preventable disease, is an important cause of fulminant hepatic failure (FHF) in children in Argentina. Universal vaccination in 1-year-old children was implemented in June 2005. The limited studies about the correlation between the characteristics of the hepatitis A virus (HAV) and FHF have been carried out in adults. METHODS: Samples from 41 children with FHF were studied from September 2003 to January 2006 and HAV RNA was detected, sequenced and analysed in the 5' non-coding region and VP1/2A region. RESULTS: Eighteen HAV strains were characterized and found to be different at the nucleotide level from the self-limited acute infection strains that have been circulating in Argentina with no temporal or geographical pattern. They did not form a genetic cluster, but some of them were identical in the largest fragment characterized and some of them seemed to be more closely related in time and/or geographically. CONCLUSION: Our results suggest that viral factors could be involved in the severity of the clinical presentation of HAV infection in children in Argentina.


Assuntos
Vírus da Hepatite A Humana/genética , Hepatite A/complicações , Falência Hepática Aguda/etiologia , Filogenia , Adolescente , Argentina , Sequência de Bases , Criança , Pré-Escolar , Fezes/virologia , Hepatite A/genética , Humanos , Lactente , Falência Hepática Aguda/virologia , Dados de Sequência Molecular , RNA/genética , Análise de Sequência de RNA
13.
J Vet Diagn Invest ; 20(5): 650-3, 2008 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-18776103

RESUMO

Bovine viral diarrhea virus (BVDV) is a significant viral pathogen of domestic cattle. Worldwide, there is evidence of BVDV exposure and infection in wild ungulates; however, the frequency and significance of such events are unknown. To determine the prevalence and distribution of Colorado deer, elk, and moose persistently infected (PI) with BVDV, a cross-sectional study was conducted using full-thickness ear tissue samples collected from animals presented to the Colorado Division of Wildlife for chronic wasting disease surveillance in the 2005-2006 hunting season. Tissue from 5,597 harvested animals (2,934 mule deer, 2,516 elk, 141 white-tailed deer, and 6 moose) was paraffin-embedded and stained for BVDV using immunohistochemistry. A single adult male mule deer had BVDV antigen in the skin; staining distribution was consistent with that seen in PI cattle. Skin and lymph node were also positive for viral RNA by polymerase chain reaction, and the virus was determined to be a type 1. The prevalence of BVDV PI cervids in Colorado is very low. However, the identification of a naturally infected adult PI animal in the wild suggests that the virus infects free-ranging populations. The source of the BVDV is unknown and is assumed to be spillover from cattle or maintenance within wildlife populations. Consideration of a potential wild animal reservoir is important in the design and implementation of BVDV management practices in cattle.


Assuntos
Animais Selvagens/virologia , Vírus da Diarreia Viral Bovina/isolamento & purificação , Infecções por Pestivirus/veterinária , Animais , Colorado/epidemiologia , Estudos Transversais , Cervos/virologia , Incidência , Infecções por Pestivirus/epidemiologia , Ruminantes/virologia
14.
Clinics (Sao Paulo) ; 72(3): 171-177, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28355363

RESUMO

OBJECTIVE:: To evaluate the respiratory systems of male and female rats maintained in individually ventilated cages (IVCs) from birth until adulthood. METHODS:: Female Wistar rats were housed in individually ventilated cages or conventional cages (CCs) and mated with male Wistar rats. After birth and weaning, the male offspring were separated from the females and kept in cages of the same type until 12 weeks of age. RESULTS:: The level of food consumption was lower in male offspring (IVC=171.7±9; CC=193.1±20) than in female offspring (IVC=100.6±7; CC=123.4±0.4), whereas the water intake was higher in female offspring (IVC=149.8±11; CC=99.2±0) than in male offspring (IVC=302.5±25; CC=249.7±22) at 11 weeks of age when housed in IVCs. The cage temperature was higher in individually ventilated cages than in conventional cages for both male (IVCs=25.9±0.5; CCs=22.95±0.3) and female (IVCs=26.2±0.3; CCs=23.1±0.3) offspring. The respiratory resistance (IVC=68.8±2.8; CC=50.6±3.0) and elastance (IVC=42.0±3.9; CC=32.4±2.0) at 300 µm/kg were higher in the female offspring housed in ventilated cages. The ciliary beat values were lower in both the male (IVCs=13.4±0.2; CC=15±0.4) and female (IVC=13.5±0.4; CC=15.9±0.6) offspring housed in individually ventilated cages than in those housed in conventional cages. The total cell (IVC=117.5±9.7; CC=285.0±22.8), neutrophil (IVC=13.1±4.8; CC=75.6±4.1) and macrophage (IVC=95.2±11.8; CC=170.0±18.8) counts in the bronchoalveolar lavage fluid were lower in the female offspring housed in individually ventilated cages than in those housed in conventional cages. CONCLUSIONS:: The environmental conditions that exist in individually ventilated cages should be considered when interpreting the results of studies involving laboratory animals. In this study, we observed gender dimorphism in both the water consumption and respiratory mechanics of rats kept in ventilated cages.


Assuntos
Abrigo para Animais/normas , Modelos Animais , Fenômenos Fisiológicos Respiratórios , Ventilação , Fatores Etários , Bem-Estar do Animal , Animais , Pressão Sanguínea/fisiologia , Líquido da Lavagem Broncoalveolar , Ingestão de Alimentos/fisiologia , Planejamento Ambiental , Feminino , Frequência Cardíaca/fisiologia , Masculino , Ratos Wistar , Testes de Função Respiratória , Fatores Sexuais , Temperatura , Fatores de Tempo
15.
PLoS One ; 12(8): e0183314, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28820906

RESUMO

METHODS: Female Wistar rats were exposed to filtered air (F) or to concentrated fine particulate matter (P) for 15 days. After mating, the rats were divided into four groups and again exposed to F or P (FF, FP, PF, PP) beginning on day 6 of pregnancy. At embryonic day 19, the placenta was collected. The placental structure, the protein and gene expression of TGFß1, VEGF-A, and its receptor Flk-1 and RAS were evaluated by indirect ELISA and quantitative real-time PCR. RESULTS: Exposure to P decreased the placental mass, size, and surface area as well as the TGFß1, VEGF-A and Flk-1 content. In the maternal portion of the placenta, angiotensin II (AngII) and its receptors AT1 (AT1R) and AT2 (AT2R) were decreased in the PF and PP groups. In the fetal portion of the placenta, AngII in the FP, PF and PP groups and AT2R in the PF and PP groups were decreased, but AT1R was increased in the FP group. VEGF-A gene expression was lower in the PP group than in the FF group. CONCLUSIONS: Exposure to pollutants before and/or during pregnancy alters some characteristics of the placenta, indicating a possible impairment of trophoblast invasion and placental angiogenesis with possible consequences for the maternal-fetal interaction, such as a limitation of fetal nutrition and growth.


Assuntos
Exposição Ambiental , Material Particulado/metabolismo , Placenta/anatomia & histologia , Sistema Renina-Angiotensina , Animais , Feminino , Expressão Gênica , Placenta/metabolismo , Gravidez , Ratos , Ratos Wistar
16.
Acta Gastroenterol Latinoam ; 36(3): 125-30, 2006 Sep.
Artigo em Espanhol | MEDLINE | ID: mdl-17407988

RESUMO

Strains of hepatitis E virus (HEV) isolated from Argentinian patients with sporadic hepatitis, as well as from swine from Argentina, belong to genotype 3. HEV genotype 3 variants have been described associated with acute liver failure (ALF) in adults from Japan and the United Kingdom. In Argentina, 30% of ALF in adults and children are of unknown aetiology. To study if HEV could be an aetiological agent associated with ALF in children, serum and/or fecal samples fJom 35 children (mean age: 6 years, 20 female, 15 male) were analyzed during 2003 and 2004. HEV RNA was detected by RT-nested PCR with primers designed within ORF 1 and ORF 2 regions. HEV RNA could be detected in three cases. Two were 12-year-old boys fom Buenos Aires province and the third was a 3-year-old girl from Corrientes province. Sequence analysis indicates that the three isolates are distinct from each other but all belong to genotype 3, exhibiting a close relationship with swine and human strains fJom sporadic cases of HEV, previously reported in Argentina. This data suggests a potential link between ALF and HEVin children in Argentina and indicates the need for the determination of HEV status in the differential diagnosis in ALE Further studies would aid in determining the true impact of this infection in Argentina and the potential benefits of a vaccine against HEV presently in phase III trials.


Assuntos
Vírus da Hepatite E/genética , Hepatite E/genética , Falência Hepática Aguda/virologia , Adolescente , Animais , Argentina , Criança , Pré-Escolar , Primers do DNA/genética , Fezes/virologia , Feminino , Genótipo , Hepatite E/diagnóstico , Vírus da Hepatite E/isolamento & purificação , Humanos , Lactente , Falência Hepática Aguda/diagnóstico , Falência Hepática Aguda/genética , Masculino , Filogenia , RNA Viral/sangue , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Suínos
17.
Acta Gastroenterol Latinoam ; 36(4): 182-9, 2006 Dec.
Artigo em Espanhol | MEDLINE | ID: mdl-17225445

RESUMO

Hepatitis A virus (HAV) infection is endemic in Argentina. Molecular tools have allowed HAV RNA detection to be extent to sera and feces from patients with different clinical backgrounds. We compare the sensitivity of the RT-PCR protocol we follow using primers targeting different genomic regions and VP3 C terminal was the most sensitive. Sequential sera and fecal samples were obtained from 20 children with acute self limited Hepatitis A. HAV RNA was detectable in 18/20 children if sera and stool specimens were collected at the onset of symptoms and in 19/20 if a later sample was considered. HAV RNA was detectable in serum from 9/20 patients until day 30 and in feces from 2 patients until day 60 and until day 90 in one. Genomic sequences from VP1/2A region in 8 samples showed they all belong to subgenotype IA although they were different between them. HAV RNA was detectable only in 1/11 sera from children with acute liver failure when VP3 C terminal fragment was searched and it belonged to genotype I. Universal vaccination in one year old children was recently implemented in Argentina and it will dramatically enable the decrease of the viral circulation, making new sources of infection emerge and allowing the introduction of new genotypes. The application of molecular tools to the study of the natural history of infection and to the epidemiologic surveillance may contribute to efficient control and lead to rational decisions in public health policies.


Assuntos
Fezes/virologia , Hepatite A/diagnóstico , Hepatovirus/isolamento & purificação , Viremia/virologia , Eliminação de Partículas Virais , Doença Aguda , Adolescente , Criança , Pré-Escolar , Feminino , Hepatite A/complicações , Hepatite A/virologia , Hepatovirus/genética , Humanos , Lactente , Falência Hepática Aguda/sangue , Falência Hepática Aguda/virologia , Masculino , Dados de Sequência Molecular , Estudos Prospectivos , RNA Viral/análise , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Sensibilidade e Especificidade , Fatores de Tempo
18.
J Heart Lung Transplant ; 35(2): 242-50, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26215332

RESUMO

BACKGROUND: Creatine (Cr) is a dietary supplement that presents beneficial effects in experimental models of heart and brain ischemia and reperfusion (I/R) injury. It can improve adenosine 5'-triphosphate generation and reduce cell damage. This study evaluated the effects of Cr supplementation in a model of lung I/R. METHODS: Forty male Wistar rats were divided into 4 groups: sham operated, Cr+sham, I/R, and Cr+I/R. We investigated the effects of 5 days of Cr supplementation (0.5 g/kg/day by gavage) before left pulmonary artery ischemia (90 minutes) and reperfusion (120 minutes) on pulmonary and systemic response. RESULTS: Cr inhibited the I/R-induced increase in exhaled nitric oxide (p < 0.05), total cells (p < 0.01), and neutrophils (p < 0.001) in bronchoalveolar lavage fluid and in the systemic circulation (p < 0.001). The levels of interleukin-1ß (p < 0.05), tissue damping, and tissue elastance (p < 0.05) were also minimized. Cr also inhibited pulmonary edema formation (total proteins in bronchoalveolar lavage fluid, p < 0.001; histologic edema index, p < 0.001) and neutrophils accumulation in lung tissue (p < 0.001). As possible mechanisms underlying Cr effects, we observed a reduced expression of caspase 3 (p < 0.05), reduced expression of Toll-like receptor (TLR) 4, and increased expression of TLR7 in lung tissue (p < 0.001). CONCLUSIONS: Cr supplementation presents pulmonary and systemic protective effects in acute lung injury induced by I/R in rats. These beneficial effects seem to be related to the anti-inflammatory and anti-oxidant properties of Cr and modulation of TLRs.


Assuntos
Creatina/administração & dosagem , Isquemia/tratamento farmacológico , Pulmão/irrigação sanguínea , Traumatismo por Reperfusão/tratamento farmacológico , Animais , Anti-Inflamatórios não Esteroides/administração & dosagem , Antioxidantes , Apoptose/efeitos dos fármacos , Western Blotting , Suplementos Nutricionais , Imuno-Histoquímica , Inflamação/prevenção & controle , Fator de Crescimento Insulin-Like I/análise , Pulmão/efeitos dos fármacos , Masculino , Óxido Nítrico/análise , Ratos , Ratos Wistar , Receptores Toll-Like/análise
19.
Toxicol Lett ; 232(2): 475-80, 2015 Jan 22.
Artigo em Inglês | MEDLINE | ID: mdl-25481569

RESUMO

This study aimed to verify the development of placental and systemic inflammation in rats exposed to fine particulate matter before or during pregnancy. Wistar rats were exposed to filtered air (control) or to a load of 600 µg/m(3) of fine particles in the air. The gene expression of IL-1ß, IL-4, IL-6, IL-10, INF-γ, TNF-α and Toll-like receptor 4 in the placenta was evaluated. The serum and placental concentrations of IL-1ß, IL-4, IL-6, IL-10, INF-γ and TNF-α were measured. The total and differential blood leukocyte and blood platelet count was assessed. Compared to control animals, IL-4 content was elevated in the fetal portion of the placenta in rats exposed to air pollution before and during pregnancy. Increased IL-4 suggests that a placental inflammatory reaction may have occurred in response to exposure to fine particulate matter and that this cytokine was responsible, among possibly others factors, for resolution of the inflammatory reaction.


Assuntos
Poluentes Atmosféricos/toxicidade , Feto/metabolismo , Interleucina-4/metabolismo , Material Particulado/toxicidade , Placenta/metabolismo , Animais , Contagem de Células Sanguíneas , Feminino , Feto/efeitos dos fármacos , Expressão Gênica/efeitos dos fármacos , Exposição por Inalação , Tamanho da Partícula , Placenta/efeitos dos fármacos , Gravidez , Ratos , Ratos Wistar
20.
Ann Thorac Surg ; 96(2): 473-7, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23806228

RESUMO

BACKGROUND: Tacrolimus and mycophenolate have now become the most widely used combination for maintenance immunosuppressive regimens after lung transplantation in comparison with cyclosporine and azathioprine. However, limited information is available with respect to their effects on cells, other than those from the immunologic compartment. We hypothesized that different triple therapies could have different effects on airway mucociliary clearance, playing an important role in respiratory infections observed after lung transplantation. METHODS: Ninety rats were assigned to three groups (n = 30 each): control = vehicle, therapy 1 = tacrolimus + mycophenolate + prednisone, and therapy 2 = cyclosporine + azathioprine + prednisone. After 7, 15, or 30 days of treatment by gavage, the animals were killed and the following parameters were studied: mucus transportability, ciliary beating frequency, mucociliary transport velocity, and neutral and acid mucus production. RESULTS: There was a significant decrease in ciliary beating frequency, mucociliary transport velocity, and neutral mucus production in all immunosuppressed animals; indeed, both therapies, mainly therapy 1, caused an increase in acid mucus production for as long as 15 days of treatment. CONCLUSIONS: Both triple therapies impaired airway mucociliary clearance of rats, but therapy 1 had a more deleterious effect. These data suggest that these undesirable effects can contribute to the high incidence of respiratory infections observed in patients undergoing lung transplantation.


Assuntos
Terapia de Imunossupressão/efeitos adversos , Imunossupressores/efeitos adversos , Depuração Mucociliar/efeitos dos fármacos , Animais , Quimioterapia Combinada , Masculino , Ratos , Ratos Wistar
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