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1.
Rev Fac Cien Med Univ Nac Cordoba ; 80(1): 20-24, 2023 Mar 31.
Artigo em Espanhol | MEDLINE | ID: mdl-37402257

RESUMO

Introducción: Actualmente se encuentra reportado que la infección por Mycoplasma pneumoniae (MP) puede darse en edades tempranas de la vida. Objetivo: Describir los hallazgos de la detección molecular de MP en secreciones respiratorias de pacientes que requirieron internación por infección respiratoria aguda, en un hospital pediátrico. Población y métodos: La recolección de datos se realizó mediante revisión de historias clínicas y la correlación estadística mediante test de chi-cuadrado. Se incluyeron 919 pacientes de un mes a catorce años y once meses de edad que requirieron internación por infección respiratoria aguda. Se analizó frecuencia por edad y sexo del asilamiento de MP conjuntamente con otros patógenos respiratorios. Resultados: MP fue el microorganismo más frecuentemente detectado (30 %), seguido del Virus Respiratorio Sincitial (VRS) (25.1 %). La edad y el sexo no se comportaron como predictor de la detección para MP. En un 47.3 % de los pacientes se aisló MP conjuntamente con otro patógeno, el más prevalente fue el VRS 31.3 %. En cuanto a los diagnósticos al egreso del grupo de pacientes con aislamiento de MP más otro microorganismo, el 50.8 % presentaron bronquiolitis, y en el grupo de pacientes con identificación solo de MP este porcentaje fue de 32.4 %. La diferencia de las distribuciones fue estadísticamente significativa (p<0.05). Conclusión: Concluimos que la detección MP es frecuente en nuestro medio y se presenta en un número importante de casos conjuntamente con otro patógeno respiratorio. Estos hallazgos deberían impulsar a continuar el estudio para determinar la relevancia clínica de los mismos.


Assuntos
Criança Hospitalizada , Mycoplasma pneumoniae , Criança , Humanos , Estudos Retrospectivos
2.
Genet Mol Biol ; 46(2): e20230005, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37338301

RESUMO

Mutation landscapes and signatures have been thoroughly studied in SARS-CoV-2. Here, we analyse those patterns and link their changes to the viral replication tissue in the respiratory tract. Surprisingly, a substantial difference in those patterns is observed in samples from vaccinated patients. Hence, we propose a model to explain where those mutations could originate during the replication cycle.

3.
Rev Fac Cien Med Univ Nac Cordoba ; 80(1): 20-24, 2023 03 31.
Artigo em Espanhol | MEDLINE | ID: mdl-37018359

RESUMO

Introduction: It is currently reported that Mycoplasma pneumoniae (MP) infection can occur at a young age. Objective: Describe the findings of the molecular detection of MP in respiratory secretions of patients who required hospitalization due to acute respiratory infection, in a pediatric hospital. Population and methods: Data collection was performed by reviewing medical records and statistical correlation using the chi-square test. 919 patients from one month to fourteen years and eleven months of age who required hospitalization for acute respiratory infection were included. The frequency by age and sex of the isolation of MP was analyzed together with other respiratory pathogens. Results: Mycoplasma pneumoniae was the most frequently detected microorganism (30%), followed by respiratory syncytial virus (RSV) (25.1%). Age and sex did not behave as a predictor of detection for MP. In 47.3% of the patients, MP was isolated together with another pathogen, the most prevalent was RSV 31.3%. Regarding the diagnoses at discharge of the group of patients with isolation of MP and a another microorganism, 50.8% had bronchiolitis, and in the group of patients with identification only of MP this percentage was 32.4%. The difference in the distributions was statistically significant (p <0.05). Conclusion: We conclude that Mycoplasma pneumoniae detection is frequent in our environment and occurs in a significant number of cases together with another respiratory pathogen. These findings should prompt further study to determine their clinical relevance.


Introducción: Actualmente se encuentra reportado que la infección por Mycoplasma pneumoniae (MP) puede darse en edades tempranas de la vida. Objetivo: Describir los hallazgos de la detección molecular de MP en secreciones respiratorias de pacientes que requirieron internación por infección respiratoria aguda, en un hospital pediátrico. Población y métodos: La recolección de datos se realizó mediante revisión de historias clínicas y la correlación estadística mediante test de chi-cuadrado. Se incluyeron 919 pacientes de un mes a catorce años y once meses de edad que requirieron internación por infección respiratoria aguda. Se analizó frecuencia por edad y sexo del asilamiento de MP conjuntamente con otros patógenos respiratorios. Resultados: MP fue el microorganismo más frecuentemente detectado (30 %), seguido del Virus Respiratorio Sincitial (VRS) (25.1 %). La edad y el sexo no se comportaron como predictor de la detección para MP. En un 47.3 % de los pacientes se aisló MP conjuntamente con otro patógeno, el más prevalente fue el VRS 31.3 %. En cuanto a los diagnósticos al egreso del grupo de pacientes con aislamiento de MP más otro microorganismo, el 50.8 % presentaron bronquiolitis, y en el grupo de pacientes con identificación solo de MP este porcentaje fue de 32.4 %. La diferencia de las distribuciones fue estadísticamente significativa (p<0.05). Conclusión: Concluimos que la detección MP es frecuente en nuestro medio y se presenta en un número importante de casos conjuntamente con otro patógeno respiratorio. Estos hallazgos deberían impulsar a continuar el estudio para determinar la relevancia clínica de los mismos.


Assuntos
Criança Hospitalizada , Mycoplasma pneumoniae , Criança , Humanos , Estudos Retrospectivos
4.
Front Physiol ; 12: 662833, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34335290

RESUMO

Despite popular usage of medicinal plants, their effects as cardiovascular protective agents have not been totally elucidated. We hypothesized that treatment with aqueous extract from Prosopis strombulifera (AEPs) and Tessaria absinthioides (AETa), Argentinian native plants, produces antioxidant effects on vascular smooth muscle cells (VSMCs) and attenuates atherogenesis on apolipoprotein E-knockout (ApoE-KO) mice. In VSMCs, both extracts (5-40 µg/ml) inhibited 10% fetal calf serum-induced cell proliferation, arrested cell in G2/M phase, reduced angiotensin II-induced reactive oxygen species (ROS) generation, and decreased NADPH oxidase subunit expression. In ApoE-KO mice, extracts significantly reduced triglycerides and lipid peroxidation [plasma thiobarbituric acid reactive substances (TBARS)], increased plasma total antioxidant status (TAS), and improved glutathione peroxidase activity in the liver. Under high-fat diet (HFD), both extracts were able to inhibit O2 - generation in the aortic tissue and caused a significant regression of atheroma plaques (21.4 ± 1.6% HFD group vs. 10.2 ± 1.2%∗ AEPs group and 14.3 ± 1.0%∗ AETa group; ∗ p < 0.01). Consumption of AEPs and AETa produces antioxidant/antimitogenic/anti-atherosclerotic effects, and their use may be beneficial as a complementary strategy regarding cardiovascular disease therapies.

5.
Int J Hyg Environ Health ; 218(7): 627-38, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26190481

RESUMO

Argentina is a developing Latin American nation that has an aim of achieving the United Nations Millennium Development Goals for potable water supplies. Their current regulations however, limit the continued development of improved potable water quality and infrastructure from a microbiological viewpoint. This is since the current regulations are focused solely to pathogenic Eschericia coli (E. coli), Pseudomonas aeruginosa (P. aeruginosa) and fecal indicators. Regions of lower socioeconomic status such as peri-urban areas are particularly at risk due to lessened financial and political ability to influence their environmental quality and infrastructure needs. Therefore, a combined microbiological sampling, analysis and quantitative microbial risk assessment (QMRA) modeling effort were engaged for a peri-urban area of Salta Argentina. Drinking water samples from home taps were analyzed and a QMRA model was developed, results of which were compared against a general 1:10,000 risk level for lack of a current Argentinian standard. This QMRA model was able to demonstrate that the current regulations were being achieved for E. coli but were less than acceptable for P. aeruginosa in some instances. Appropriate health protections are far from acceptable for Giardia for almost all water sources. Untreated water sources were sampled and analyzed then QMRA modeled as well, since a significant number of the community (∼9%) still use them for potable water supplies. For untreated water E. coli risks were near 1:10,000, however, P. aeruginosa and Giardia risks failed to be acceptable in almost all instances. The QMRA model and microbiological analyses demonstrate the need for improved regulatory efforts for the peri-urban area along with improved investment in their water infrastructure.


Assuntos
Água Potável , Monitoramento Ambiental/métodos , Escherichia coli/crescimento & desenvolvimento , Giardia/crescimento & desenvolvimento , Pseudomonas aeruginosa/crescimento & desenvolvimento , Purificação da Água/normas , Abastecimento de Água/normas , Argentina , Água Potável/microbiologia , Água Potável/parasitologia , Monitoramento Ambiental/legislação & jurisprudência , Regulamentação Governamental , Humanos , Modelos Teóricos , Medição de Risco/métodos , População Rural , Classe Social , População Urbana , Microbiologia da Água , Purificação da Água/legislação & jurisprudência , Abastecimento de Água/legislação & jurisprudência
6.
Insuf. card ; 4(4): 161-167, oct.-dic. 2009. ilus, tab
Artigo em Espanhol | LILACS | ID: lil-633353
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