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1.
Diagnostics (Basel) ; 14(19)2024 Sep 24.
Artigo em Inglês | MEDLINE | ID: mdl-39410518

RESUMO

Intestinal failure (IF) is a debilitating condition characterized by the insufficient function of the gastrointestinal tract to absorb nutrients and fluids essential for life. This review consolidates recent advancements and challenges in managing IF among adult and pediatric populations, highlighting differences in etiology, management, and outcomes. Over the recent years, significant strides have been made in the nutritional and medical management of IF, significantly reducing mortality rates and improving the quality of life for patients. Key advancements include the development and availability of glucagon-like peptide-2 (GLP-2) analogs, improved formulations of parenteral nutrition, and the establishment of specialized interdisciplinary centers. Short bowel syndrome (SBS) remains the predominant cause of IF globally. The pediatric segment is increasingly surviving into adulthood, presenting unique long-term management challenges that differ from adult-onset IF. These include the need for tailored nutritional support, management of IF-associated liver disease, and addressing growth and neurodevelopmental outcomes. The therapeutic landscape for IF continues to evolve with the development of new treatment modalities and better understanding of the condition's pathophysiology. However, disparities in treatment outcomes between children and adults suggest the need for age-specific management strategies. This review underscores the importance of a nuanced approach to IF, incorporating advancements in medical science with a deep understanding of the distinct needs.

2.
Violence Against Women ; : 10778012241275698, 2024 Sep 23.
Artigo em Inglês | MEDLINE | ID: mdl-39311677

RESUMO

We explore the implications of the concept of territorio cuerpo-tierra for conducting research on women's resilience to trauma and post-COVID-19 pandemic recovery in El Salvador, Central America. Cuerpo-territorio forces a reconceptualization of women's realities as bound to the embodiment of the geo-politics of gender, body, and land as territories, and thus, their realities as bound to the histories and temporality of those as territories. Through a series of despartares decoloniales (decolonial awakenings), we postulate that resilience research reproduces narrowly defined understanding of women's realities and responses to both the symbolic and physical conditions and adversities of their lives.

3.
rev. udca actual. divulg. cient ; 27(1): e2409, ene.-jun. 2024. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1576991

RESUMO

ABSTRACT Aquatic macrophytes play an important role in lentic systems, since they constitute the particular habitat of several groups of aquatic insects and play a fundamental role in structuring their communities. The objective of this study was to contribute to the knowledge of the aquatic entomofauna associated with macrophytes in wetlands of the middle basin of the Atrato River, Chocó-Colombia. For four months, collections of aquatic insects associated with the roots of different aquatic plants were made, using a quadrat of one m2, equipped with a 0.5 mm mesh, with three replicates per swamp. Simultaneously, some physical and chemical variables of the water were measured. The community of aquatic insects was composed of 6 orders, 23 families, and 36 genera. The most representative orders were Hemiptera (Heteroptera) and Odonata and the most abundant families were Noteridae (Coleoptera) and Libellulidae (Odonata). The diversity index presented a range between 2.39 and 2.07 bits/ind, with Plaza Seca as the most representative wetlands, while the dominance was between 0.16 and 0.11. The most abundant functional group was that of predators. The variables pH, water temperature and transparency presented significant differences between swamps and there were important associations between the aquatic entomofauna, and the abiotic variables analyzed.


RESUMEN-+ Las macrófitas acuáticas juegan un rol importante en los sistemas lénticos, ya que constituyen el hábitat particular de varios grupos de insectos acuáticos y desempeñan un papel fundamental en la estructuración de sus comunidades. El objetivo de este estudio fue contribuir al conocimiento de la entomofauna acuática asociada las macrófitas en ciénagas de la cuenca media del Río Atrato, Chocó-Colombia. Durante cuatro meses se hicieron colectas de insectos acuáticos asociados a las raíces de diferentes plantas acuáticas, utilizando un cuadrante de un m2, dotado de una malla de 0,5 mm, con tres replicas por ciénaga. Simultáneamente se midieron algunas variables físicas y químicas del agua. La comunidad de insectos acuáticos estuvo compuesta por 6 órdenes, 23 familias y 36 géneros. Los órdenes más representativos fueron Hemiptera (Heteroptera) y Odonata y las familias más abundantes fueron Noteridae (Coleoptera) y Libellulidae (Odonata). El índice de diversidad presentó un rango de entre 2,39 y 2,07 bits/ind, sobresaliendo la ciénaga Plaza Seca, mientras que la dominancia estuvo entre 0,16 y 0,11. El grupo funcional de mayor abundancia fue el de los predadores. Las variables pH, temperatura del agua y transparencia presentaron diferencias significativas entre ciénagas y existieron importantes asociaciones entre la entomofauna acuática y las variables abióticas analizadas.

4.
Periodontol 2000 ; 2024 Apr 20.
Artigo em Inglês | MEDLINE | ID: mdl-38641954

RESUMO

This review focuses on three major aspects of oncoviruses' role in cancer development. To begin, we discuss their geographic distribution, revealing that seven oncoviruses cause 20% of all human cancers worldwide. Second, we investigate the primary carcinogenic mechanisms, looking at how these oncogenic viruses can induce cellular transformation, angiogenesis, and local and systemic inflammation. Finally, we investigate the possibility of SARS-CoV-2 infection reactivating latent oncoviruses, which could increase the risk of further disease. The development of oncovirus vaccines holds great promise for reducing cancer burden. Many unanswered questions about the host and environmental cofactors that contribute to cancer development and prevention remain, which ongoing research is attempting to address.

5.
Front Oncol ; 13: 1255555, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37790759

RESUMO

Background and aims: Pediatric acute lymphoblastic leukemia (ALL) survival rates in low- and middle-income countries are lower due to deficiencies in multilevel factors, including access to timely diagnosis, risk-stratified therapy, and comprehensive supportive care. This retrospective study aimed to analyze outcomes for pediatric ALL at 16 centers in Mexico. Methods: Patients <18 years of age with newly diagnosed B- and T-cell ALL treated between January 2011 and December 2019 were included. Clinical and biological characteristics and their association with outcomes were examined. Results: Overall, 2,116 patients with a median age of 6.3 years were included. B-cell immunophenotype was identified in 1,889 (89.3%) patients. The median white blood cells at diagnosis were 11.2.5 × 103/mm3. CNS-1 status was reported in 1,810 (85.5%), CNS-2 in 67 (3.2%), and CNS-3 in 61 (2.9%). A total of 1,488 patients (70.4%) were classified as high-risk at diagnosis. However, in 52.5% (991/1,889) of patients with B-cell ALL, the reported risk group did not match the calculated risk group allocation based on National Cancer Institute (NCI) criteria. Fluorescence in situ hybridization (FISH) and PCR tests were performed for 407 (19.2%) and 736 (34.8%) patients, respectively. Minimal residual disease (MRD) during induction was performed in 1,158 patients (54.7%). The median follow-up was 3.7 years. During induction, 191 patients died (9.1%), and 45 patients (2.1%) experienced induction failure. A total of 365 deaths (17.3%) occurred, including 174 deaths after remission. Six percent (176) of patients abandoned treatment. The 5-year event-free survival (EFS) was 58.9% ± 1.7% for B-cell ALL and 47.4% ± 5.9% for T-cell ALL, while the 5-year overall survival (OS) was 67.5% ± 1.6% for B-cell ALL and 54.3% ± 0.6% for T-cell ALL. The 5-year cumulative incidence of central nervous system (CNS) relapse was 5.5% ± 0.6%. For the whole cohort, significantly higher outcomes were seen for patients aged 1-10 years, with DNA index >0.9, with hyperdiploid ALL, and without substantial treatment modifications. In multivariable analyses, age and Day 15 MRD continued to have a significant effect on EFS. Conclusion: Outcomes in this multi-institutional cohort describe poor outcomes, influenced by incomplete and inconsistent risk stratification, early toxic death, high on-treatment mortality, and high CNS relapse rate. Adopting comprehensive risk-stratification strategies, evidence-informed de-intensification for favorable-risk patients and optimized supportive care could improve outcomes.

6.
Int J Mol Sci ; 23(24)2022 Dec 13.
Artigo em Inglês | MEDLINE | ID: mdl-36555465

RESUMO

Antimicrobial resistance (AMR) is a serious public health problem that results in high morbidity and mortality rates. In particular, multidrug-resistant (MDR) strains circulating in hospital settings pose a major threat as they are associated with serious nosocomial infections. Therefore, regular cleaning and disinfection procedures, usually using chemical disinfectants, must be implemented in these facilities. Hydrogen peroxide (HP)-based disinfectants have proven high microbicidal activity and several comparative advantages over conventional disinfectants. We assessed the in vitro biocidal activity of an 8% HP solution combined with 30 mg/L silver ions (HP + Ag) against MDR clinical isolates of Klebsiella pneumoniae (MDRKp) and Pseudomonas aeruginosa (MDRPa), and methicillin-resistant Staphylococcus aureus (MRSA). Accordingly, the in vitro antibacterial activity was determined using the macrodilution method, and the efficacy was determined for 30 min in terms of (1) activity on bacteria in suspension and (2) activity on surfaces using vaporized HP + Ag on a 20 cm2 stainless steel surface. A strong bactericidal effect of HP + Ag was observed against MDRKp, MDRPa, and MRSA strains, with minimum inhibitory concentrations and minimum bactericidal concentrations between 362.5 and 5800 mg/L. A strong effect was observed during the 30 min of HP + Ag exposure to the resistant clinical isolates, with over 4-Log10 reduction in CFUs. Regarding the efficacy of the disinfectant on surfaces, bacterial load reductions of >99% were observed. These results suggest that HP + Ag is potentially useful as an effective disinfectant for decontaminating surfaces in hospital settings suspected of contamination with MDR bacteria.


Assuntos
Desinfetantes , Staphylococcus aureus Resistente à Meticilina , Peróxido de Hidrogênio/farmacologia , Prata/farmacologia , Desinfetantes/farmacologia , Desinfecção/métodos , Antibacterianos/farmacologia , Testes de Sensibilidade Microbiana
7.
Pharmaceutics ; 14(6)2022 Jun 12.
Artigo em Inglês | MEDLINE | ID: mdl-35745820

RESUMO

Bacterial antibiotic resistance is a serious global public health concern. Infections caused by colistin-resistant Pseudomonas aeruginosa (CRPa) strains represent a serious threat due to their considerable morbidity and mortality rates, since most of the current empirical antibiotic therapies are ineffective against these strains. Accordingly, cationic antimicrobial peptides (CAMPs) have emerged as promising alternatives to control resistant bacteria. In this study, the interaction of a CAMP derived from cecropin D-like (∆M2) with model membranes mimicking bacterial biomembranes of wild-type (WTPa) strains of P. aeruginosa and CRPa was evaluated through in vitro and in silico approaches. In vitro interaction was determined by infrared spectroscopy, whereas in silico molecular dynamics was performed to predict specific interactions between amino acids of ∆M2 and lipids of model membrane systems. Experimental analysis showed this peptide interacted with the lipids of bacterial-like model membranes of WTPa and CRPa. In both cases, an increase in the concentration of peptides induced an increase in the phase transition temperature of the lipid systems. On the other hand, the peptides in solution underwent a transition from a random to a helical secondary structure after interacting with the membranes mostly favored in the CRPa system. The α-helix structure percentage for ΔM2 interacting with WTPa and CRPa lipid systems was 6.4 and 33.2%, respectively. Finally, molecular dynamics showed ∆M2 to have the most affinities toward the phospholipids palmitoyl-oleyl-phosphatidylglycerol (POPG) and palmitoyl-oleoyl-phosphatidylethanolamine (POPE) that mimic membranes of WTPa and CRPa, respectively. This work provides clues for elucidating the membrane-associated mechanism of action of ∆M2 against colistin-susceptible and -resistant strains of Pseudomonas aeruginosa.

8.
Nat Commun ; 13(1): 2387, 2022 05 02.
Artigo em Inglês | MEDLINE | ID: mdl-35501322

RESUMO

Transcription Factor 4 (TCF4) has been associated with autism, schizophrenia, and other neuropsychiatric disorders. However, how pathological TCF4 mutations affect the human neural tissue is poorly understood. Here, we derive neural progenitor cells, neurons, and brain organoids from skin fibroblasts obtained from children with Pitt-Hopkins Syndrome carrying clinically relevant mutations in TCF4. We show that neural progenitors bearing these mutations have reduced proliferation and impaired capacity to differentiate into neurons. We identify a mechanism through which TCF4 loss-of-function leads to decreased Wnt signaling and then to diminished expression of SOX genes, culminating in reduced progenitor proliferation in vitro. Moreover, we show reduced cortical neuron content and impaired electrical activity in the patient-derived organoids, phenotypes that were rescued after correction of TCF4 expression or by pharmacological modulation of Wnt signaling. This work delineates pathological mechanisms in neural cells harboring TCF4 mutations and provides a potential target for therapeutic strategies for genetic disorders associated with this gene.


Assuntos
Deficiência Intelectual , Neurônios , Proliferação de Células/genética , Criança , Humanos , Hiperventilação/metabolismo , Deficiência Intelectual/genética , Neurônios/metabolismo , Fator de Transcrição 4/genética , Fator de Transcrição 4/metabolismo
9.
Int J Mol Sci ; 23(3)2022 Feb 04.
Artigo em Inglês | MEDLINE | ID: mdl-35163721

RESUMO

The use of surfactants in polymerization reactions is particularly important, mainly in emulsion polymerizations. Further, micelles from biocompatible surfactants find use in pharmaceutical dosage forms. This paper reviews recent developments in the synthesis of novel gemini and bicephalous surfactants, micelle formation, and their applications in polymer and nanoparticle synthesis, oil recovery, catalysis, corrosion, protein binding, and biomedical area, particularly in drug delivery.


Assuntos
Micelas , Tensoativos , Polimerização , Polímeros
10.
Andes Pediatr ; 93(6): 841-850, 2022 Dec.
Artigo em Espanhol | MEDLINE | ID: mdl-37906801

RESUMO

The multisystem inflammatory syndrome in children associated with COVID-19 (MIS-C) is infre quent but potentially lethal. There are few reports of this disease and its phenotypes in Latin America. OBJECTIVE: To describe the characteristics of the clinical phenotypes of MIS-C in hospitalized patients in Lima, Peru. PATIENTS AND METHOD: A descriptive and retrospective study in patients under 14 years old with a diagnosis of MIS-C at the Hospital Nacional Edgardo Rebagliati Martins (Lima, Perú), from April 2020 to August 2021. Clinical-demographic and microbiological variables were recorded. According to these, patients with MIS-C were classified into the shock phenotype, Kawasaki disease (KD) without shock, and the fever and inflammation phenotype, analyzing their clinical outcomes. RESULTS: 58 patients were analyzed. 32 (55.2%) presented the shock phenotype, 15 (25.8%) Kawasaki disease (KD) phenotype without shock, and 11 (19%) fever and inflammation phenotype. In the shock phenotype, 17 had KD. The mean age was 7 ± 3.5 years and 67.2% were males. Gastrointes tinal and mucocutaneous manifestations predominated in all phenotypes. The mortality was 3.5%. The frequency of coronary aneurysms was 10.2%. Most patients received immunomodulatory and antiplatelet treatment. Patients with shock phenotype showed greater involvement in inflammatory markers, hematological dysfunction, and myocardial injury, with a higher frequency of respiratory failure and invasive mechanical ventilation. CONCLUSIONS: In our case series, patients with shock phenotype were the most frequent and had worse clinical outcomes. Active surveillance of clinical phenotypes is needed to make an early diagnosis and management to improve the prognosis in these patients.


Assuntos
COVID-19 , Síndrome de Linfonodos Mucocutâneos , Criança , Masculino , Humanos , Pré-Escolar , Adolescente , Feminino , COVID-19/complicações , COVID-19/diagnóstico , Síndrome de Linfonodos Mucocutâneos/complicações , Síndrome de Linfonodos Mucocutâneos/diagnóstico , Estudos Retrospectivos , Inflamação , Fenótipo
11.
Rev. chil. obstet. ginecol. (En línea) ; Rev. chil. obstet. ginecol;86(2): 228-234, abr. 2021.
Artigo em Espanhol | LILACS | ID: biblio-1388640

RESUMO

RESUMEN El síndrome de Eisenmenger es una patología del sistema vascular pulmonar, que se caracteriza por un incremento de las resistencias en los vasos sanguíneos pulmonares, en pacientes con antecedentes de cardiopatía con comunicación entre la circulación pulmonar y circulación sistémica. Este síndrome en la mujer embarazada representa un alto índice de morbilidad y mortalidad tanto para la madre como para el feto; los síntomas que presentan surgen como consecuencia de los cambios fisiológicos en el sistema cardiovascular y hematopoyético. Es un desafío para el obstetra el manejo de estas pacientes idealmente debe ofrecerse asesoría preconcepcional, y valoración por cardiología; si no es posible, se realizará evaluación del riesgo desde el primer control prenatal. El mejor tratamiento consiste en oxigenoterapia, medicamentos vasodilatadores, y anticoagulantes, logrando disminuir el porcentaje de pobres desenlaces materno-fetales. Es de vital importancia definir el momento del nacimiento con el fin de tomar las medidas terapéuticas necesarias para evitar complicaciones, además se requiere de un manejo multidisciplinario, incluido el apoyo por una unidad de cuidado intensivo dado la alta probabilidad de complicaciones asociadas a esta patología.


ABSTRACT Eisenmenger syndrome is a pathology of the pulmonary vascular system, which is characterized by an increase in resistance of the pulmonary blood vessels in patients with a history of heart disease with communication between the pulmonary circulation and the systemic circulation. This syndrome in pregnant women represents a high morbidity and mortality rate for both the mother and the fetus. The symptoms that arise are a consequence of the physiological changes in the cardiovascular and hematopoietic system. The management of these patients is a challenge for the obstetrician; ideally, preconception counseling and cardiology assessment should be offered and if this is not possible, risk assessment should be carried out from the first prenatal control. The best treatment consists of oxygen therapy, vasodilating agents, and anticoagulant medications with the goal of reducing the percentage of poor maternal-fetal outcomes. It is vitally important to define the time of birth in order to take the necessary therapeutic measures to avoid complications. In addition, multidisciplinary management and an intensive care unit are required due to the high probability of complications associated with this pathology.


Assuntos
Humanos , Feminino , Gravidez , Adulto , Complicações Cardiovasculares na Gravidez/etiologia , Complexo de Eisenmenger/complicações , Complicações Cardiovasculares na Gravidez/terapia , Complexo de Eisenmenger/terapia , Hipertensão Pulmonar/etiologia
12.
Arch. cardiol. Méx ; Arch. cardiol. Méx;91(1): 25-33, ene.-mar. 2021. tab, graf
Artigo em Espanhol | LILACS | ID: biblio-1152857

RESUMO

Resumen Objetivo: Describir los efectos cardiovasculares del tratamiento del cáncer infantil en supervivientes mediante métodos clínicos, electrocardiográficos y ecocardiográficos. Material y métodos: Estudio transversal y observacional de casos y controles de 34 pacientes de una clínica de supervivientes de cáncer infantil, evaluados de forma clínica, con electrocardiograma, ecocardiografía convencional y strain. Edad promedio de 13.03 años; dosis acumulada de antracíclicos promedio de 219.5 mg/m2; siete además con radiación a tórax. Análisis con pruebas T de Student y regresión lineal. Resultados: Fracción de expulsión izquierda preservada en supervivientes. Strain longitudinal izquierdo en dos, tres cámaras y circunferencial disminuido en supervivientes (p < 0.05). Los enfermos sometidos a radioterapia y antracíclicos mostraron un incremento de la frecuencia cardíaca, disminución de la fracción de expulsión y fracción de acortamiento izquierdos (< 0.05). Ventrículo derecho sin cambios significativos. Discusión y conclusiones: Existe un gran número de supervivientes de cáncer infantil tratados con cardiotóxicos y radioterapia; éstos pueden experimentar cambios en el strain miocárdico ventricular (aun con fracción de expulsión normal) o arritmias, como lo muestra el grupo estudiado, que concuerda con protocolos internacionales previos. Es importante su evaluación cardiovascular completa para predecir el riesgo de insuficiencia cardíaca como parte de un seguimiento protocolizado en clínicas de cardiooncología bien establecidas.


Abstract Objective: To describe the cardiovascular effects of childhood cancer treatment in survivors through clinical, electrocardiogram and echocardiographic methods. Material and methods: Prospective, observational case-control study of 34 patients of a Childhood Cancer Survivors Clinic, evaluated clinically, with electrocardiogram, with conventional echocardiography and strain. Average age 13.03 years; cumulative average anthracyclic dose 219.5 mg/m2; seven also with chest radiation. Analysis with student T tests and linear regression. Results: Left ejection fraction in survivors was preserved. Longitudinal left strain in 2, 3 chambers and circumferential was decreased in survivors (p < 0.05). Those undergoing radiotherapy and anthracyclic presented increased heart rate, ejection fraction and left shortening fraction decreased (< 0.05). Right ventricle without significant changes. Discussion and conclusions: There are a large number of childhood cancer survivors treated with cardiotoxics and radiotherapy. They may present changes in ventricular myocardial strain (even with normal ejection fraction) and/or arrhythmias, as evidenced in the group studied, which is consistent with previous international studies. Its complete cardiovascular evaluation is important to predict the risk of heart failure as part of a protocolized follow-up in well-established cardio oncology clinics.


Assuntos
Humanos , Masculino , Feminino , Criança , Adolescente , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/etiologia , Neoplasias/complicações , Neoplasias/terapia , Doenças Cardiovasculares/epidemiologia , Estudos de Casos e Controles , Estudos Transversais , Sobreviventes de Câncer , México
13.
Rev. Univ. Ind. Santander, Salud ; 53(1): e300, Marzo 12, 2021. tab, graf
Artigo em Espanhol | LILACS | ID: biblio-1365442

RESUMO

Resumen Introducción: Los gobiernos al inicio de la pandemia, con el fin de mitigar y suprimir la propagación del virus implementaron medidas no farmacológicas ante la falta de vacunas y tratamientos farmacológicos efectivos. El gobierno colombiano emprendió acciones para controlar el contagio del COVID-19. Estas afectaron a la población y por ello el país requiere una evaluación profunda de la respuesta social ante la pandemia. Objetivo: Analizar la respuesta social a las medidas no farmacológicas para controlar la propagación del COVID-19 en Colombia. Metodología: Estudio exploratorio descriptivo transversal. El total de personas que respondieron la encuesta fue de 3549 adultos, entre el 8 y el 20 de abril de 2020. Resultados: En el país existen tres grupos de personas que han respondido a la pandemia de formas diferentes: quienes se resisten (34 %), quienes sufren (26 %) y quienes la aceptan (40 °%). En general, 90 % de las personas adoptó al menos una medida para protegerse, el 68 % adoptó más de tres medidas de higiene y autocuidado y un 60 °% implementó más de tres medidas de distanciamiento físico. Conclusiones: Al inicio de la pandemia, la ausencia de una vacuna hizo que las acciones individuales fueran tan importantes como las medidas implementadas por el gobierno. Sin embargo, pedagogía a nivel comunitario y el acceso a la información correcta, clara y concisa contribuyó con cambios de comportamientos positivos en la higiene, autocuidado y adherencia a medidas de distanciamiento, todo esto ha sido crucial para detener la propagación de COVID-19.


Abstract Introduction: At the beginning of the pandemic, governments implemented non-pharmacological measures to mitigate and suppress the spread of the virus in the absence of vaccines and effective pharmacological treatments. The Colombian government undertook actions to control the spread of COVID-19. These affected the population; therefore, the country requires a thorough evaluation of the social response to the pandemic. Objective: To analyze the social response to non-pharmacological measures to control the spread of COVID-19 in Colombia. Methodology: Cross-sectional descriptive exploratory study. The total number of people who responded to the survey was 3549 adults, between April 8 and 20, 2020. Results: There are three groups of people in the country who are responding to the pandemic in different ways: those who resist (34%), those who suffer (26%) and those who accept it (40%). Overall, 90% of people took at least one measure to protect themselves and others, 68% took more than three hygiene and self-care measures, 60% implemented more than three physical distancing measures. Conclusions: At the beginning of the pandemic, in the absence of a vaccine, individual actions are as important as measures implemented by the government. However, community-level education and access to correct, clear and concise information contributed to positive behavioral changes in hygiene, self-care and adherence to distancing measures, all of which are crucial to stop the spread of COVID-19.


Assuntos
Humanos , Masculino , Feminino , Comportamento Social , Isolamento Social , Quarentena , COVID-19 , Mitigação de Desastre
14.
Molecules ; 25(21)2020 Oct 30.
Artigo em Inglês | MEDLINE | ID: mdl-33142969

RESUMO

Antimicrobial resistance reduces the efficacy of antibiotics. Infections caused by multidrug-resistant (MDR), Gram-negative bacterial strains, such as Klebsiella pneumoniae (MDRKp) and Pseudomonas aeruginosa (MDRPa), are a serious threat to global health. However, cationic antimicrobial peptides (CAMPs) are promising as an alternative therapeutic strategy against MDR strains. In this study, the inhibitory activity of a cationic peptide, derived from cecropin D-like (ΔM2), against MDRKp and MDRPa clinical isolates, and its interaction with membrane models and bacterial genomic DNA were evaluated. In vitro antibacterial activity was determined using the broth microdilution test, whereas interactions with lipids and DNA were studied by differential scanning calorimetry and electronic absorption, respectively. A strong bactericidal effect of ΔM2 against MDR strains, with minimal inhibitory concentration (MIC) and minimal bactericidal concentrations (MBC) between 4 and 16 µg/mL, was observed. The peptide had a pronounced effect on the thermotropic behavior of the 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC)/1,2-dimyristoyl-sn-glycero-3-phosphorylglycerol (DMPG) membrane models that mimic bacterial membranes. Finally, the interaction between the peptide and genomic DNA (gDNA) showed a hyperchromic effect, which indicates that ΔM2 can denature bacterial DNA strands via the grooves.


Assuntos
Antibacterianos , Peptídeos Catiônicos Antimicrobianos , Klebsiella pneumoniae/crescimento & desenvolvimento , Pseudomonas aeruginosa/crescimento & desenvolvimento , Antibacterianos/química , Antibacterianos/farmacologia , Peptídeos Catiônicos Antimicrobianos/química , Peptídeos Catiônicos Antimicrobianos/farmacologia , Farmacorresistência Bacteriana Múltipla , Humanos , Proteínas de Insetos/química , Klebsiella pneumoniae/isolamento & purificação , Precursores de Proteínas/química , Pseudomonas aeruginosa/isolamento & purificação
15.
Int J Equity Health ; 19(1): 148, 2020 10 26.
Artigo em Inglês | MEDLINE | ID: mdl-33100216

RESUMO

BACKGROUND: People living a trans-life require access to equitable healthcare services, policies and research that address their needs. However, trans people have experienced different forms of violence, discrimination, stigma, and unfair access barriers when dealing with healthcare providers. Therefore, adapting sexual and reproductive health services with the purpose of providing more equitable, inclusive and discrimination-free healthcare services is an urgent need. The article presents an example of how operative research can be used in order to adjust sexual and reproductive healthcare services to trans people's needs, identities and circumstances. METHODS: This is a qualitative study written from a constructivist perspective, and it is based on the voices and experiences of trans people in four major cities in Colombia. The research used a combination of focus groups of discussion (n = 6) and in-depth interviews with trans people (n = 13) in Barranquilla, Bogota, Cali and Medellin. This research had two specific objectives: i) identifying the main sexual and reproductive health needs of people living a trans-life; and ii) generating new evidence in order to guide the adaptation of sexual and reproductive health services centered to trans people's needs, identities, and circumstances. Qualitative data codification and analysis was using NVivo. RESULTS: Once access barriers to sexual and reproductive health services, unmet sexual and reproductive health needs were identified, the research helped define strategies to adapt sexual and reproductive health services to the needs, identities, and circumstances of people living a trans-life in Colombia. Amongst the main barriers found were healthcare costs, lack of insurance, stigmatization, discrimination and abuse by health care providers. Perhaps among the most notable sexual and reproductive health needs presented were trans-specific services such as sensitive assistance for the transition process, endocrinology appointments, and sex reaffirmation surgeries. CONCLUSIONS: The evidence obtained from this research allowed Profamilia, a Colombian healthcare provider, to adapt the sexual and reproductive health services it provides to people living a trans-life in Colombia. Furthermore, it was possible for Profamilia to design and implement an inclusive sexual and reproductive health program that specifically addresses trans people's needs, identities, and circumstances.


Assuntos
Necessidades e Demandas de Serviços de Saúde/organização & administração , Serviços de Saúde Reprodutiva/organização & administração , Saúde Sexual , Pessoas Transgênero , Adulto , Colômbia , Feminino , Humanos , Masculino , Pesquisa Qualitativa
16.
Arch Cardiol Mex ; 91(1): 25-33, 2020 06 18.
Artigo em Espanhol | MEDLINE | ID: mdl-33008156

RESUMO

Objetivo: Describir los efectos cardiovasculares del tratamiento del cáncer infantil en supervivientes mediante métodos clínicos, electrocardiográficos y ecocardiográficos. Material y métodos: Estudio transversal y observacional de casos y controles de 34 pacientes de una clínica de supervivientes de cáncer infantil, evaluados de forma clínica, con electrocardiograma, ecocardiografía convencional y strain. Edad promedio de 13.03 años; dosis acumulada de antracíclicos promedio de 219.5 mg/m2; siete además con radiación a tórax. Análisis con pruebas T de Student y regresión lineal. Resultados: Fracción de expulsión izquierda preservada en supervivientes. Strain longitudinal izquierdo en dos, tres cámaras y circunferencial disminuido en supervivientes (p < 0.05). Los enfermos sometidos a radioterapia y antracíclicos mostraron un incremento de la frecuencia cardíaca, disminución de la fracción de expulsión y fracción de acortamiento izquierdos (< 0.05). Ventrículo derecho sin cambios significativos. Discusión y conclusiones: Existe un gran número de supervivientes de cáncer infantil tratados con cardiotóxicos y radioterapia; éstos pueden experimentar cambios en el strain miocárdico ventricular (aun con fracción de expulsión normal) o arritmias, como lo muestra el grupo estudiado, que concuerda con protocolos internacionales previos. Es importante su evaluación cardiovascular completa para predecir el riesgo de insuficiencia cardíaca como parte de un seguimiento protocolizado en clínicas de cardiooncología bien establecidas.


Assuntos
Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/etiologia , Neoplasias/complicações , Neoplasias/terapia , Adolescente , Sobreviventes de Câncer , Doenças Cardiovasculares/epidemiologia , Estudos de Casos e Controles , Criança , Estudos Transversais , Feminino , Humanos , Masculino , México
17.
Rev Panam Salud Publica ; 44: e49, 2020.
Artigo em Espanhol | MEDLINE | ID: mdl-32973901

RESUMO

OBJECTIVE: Measure social inequalities in antimicrobial resistance in Neisseria gonorrhoeae in Colombia. METHODS: Ecological study using a multi-panel of data, disaggregated at the subnational level, and using isolations of N. gonorrhoeae as a proxy for antimicrobial resistance (AMR) between 2009 and 2018. A sociodemographic characterization, an analysis of the antimicrobial sensitivity of isolations of N. gonorrhoeae, and a measurement of inequalities in AMR in N. gonorrhoeae were conducted using the slope index of inequality, the relative inequality index, and the concentration index. RESULTS: The findings indicate antimicrobial resistance to penicillin (50.7%) and tetracycline (67.3%) in isolations of N. gonorrhoeae, and the existence of absolute and relative inequalities during the study period. Access barriers to health services, not having received information on the prevention of sexually transmitted infections, basic unmet needs, and illiteracy explained the inequalities in AMR in N. gonorrhoeae. CONCLUSIONS: Six recommendations emerged with a view to largely containing AMR in N. gonorrhoeae: i) increase awareness of safe sexual and reproductive health; ii) rethink how to deliver key messages with an equity approach; iii) improve information, prescription, and drug chain systems; iv) form coalitions to improve response and share objectives with the private sector; v) improve the availability and disaggregation of data; and vi) support research on inequalities in AMR.


OBJETIVO: Medir as desigualdades sociais na resistência antimicrobiana de Neisseria gonorrhoeae na Colômbia. MÉTODOS: Estudo ecológico que utilizou um painel múltiplo de dados desagregados ao nível subnacional de isolados de N. gonorrhoeae como substituto para a resistência antimicrobiana (RAM) entre 2009 e 2018. Realizamos uma caracterização sociodemográfica, uma análise da sensibilidade antimicrobiana dos isolados de N. gonorrhoeae e uma medição das desigualdades na RAM para N. gonorrhoeae utilizando o índice absoluto de desigualdade, o índice relativo de desigualdade e o índice de concentração. RESULTADOS: Os resultados indicam a existência de resistência antimicrobiana nos isolados de N. gonorrhoeae à penicilina (50,7%) e à tetraciclina (67,3%), bem como desigualdades absolutas e relativas durante o período analisado. Os obstáculos no acesso aos serviços de saúde, a falta de informações sobre a prevenção de infecções sexualmente transmissíveis, a existência de necessidades básicas não satisfeitas e o analfabetismo explicam as desigualdades na RAM de N. gonorrhoeae. CONCLUSÕES: Podem ser feitas seis recomendações para conter em grande medida a RAM de N. gonorrhoeae: i) aumentar a conscientização sobre a saúde sexual e reprodutiva segura, ii) repensar a forma de transmitir as mensagens principais, com foco na equidade, iii) melhorar os sistemas de informação, prescrição e a cadeia de medicamentos, iv) criar coalisões para melhorar a capacidade de resposta e compartilhar objetivos com o setor privado, v) melhorar a disponibilidade e a desagregação de dados e vi) apoiar a pesquisa sobre as desigualdades na RAM.

19.
Rev Panam Salud Publica ; 44, sept. 2020
Artigo em Espanhol | PAHO-IRIS | ID: phr-52321

RESUMO

[RESUMEN]. Objetivo. Medir desigualdades sociales en la resistencia antimicrobiana de la Neisseria gonorrhoeae en Colombia. Métodos. Estudio ecológico utilizando un multipanel de datos desagregado a nivel subnacional de los aislamientos en la N. gonorrhoeae como proxy de resistencia antimicrobiana (RAM) entre 2009 y 2018. Se llevó a cabo una caracterización sociodemográfica, un análisis de la sensibilidad antimicrobiana de aislamientos de N. gonorrhoeae, y una medición de desigualdades en la RAM para la N. gonorrhoeae mediante el índice de desigualdad de la pendiente, el índice de desigualdad relativo y el índice de concentración. Resultados. Los hallazgos indican resistencia antimicrobiana de aislamientos de N. gonorrhoeae a penicilina (50,7%) y tetraciclina (67,3%); y la existencia de desigualdades absolutas y relativas durante el período analizado. Las barreras de acceso a servicios de salud, no haber recibido información de prevención de las infecciones de transmisión sexual, necesidades básicas insatisfechas y analfabetismo explicaron las desigualdades en la RAM de la N. gonorrhoeae. Conclusiones. Seis recomendaciones emergen para contener en gran medida la RAM en la N. gonorrhoeae: i) aumentar conciencia sobre la salud sexual y reproductiva segura; ii) repensar cómo entregar mensajes claves con enfoque de equidad; iii) mejorar los sistemas de información, prescripción y cadena de medicamentos; iv) crear coaliciones para mejorar la respuesta y compartir objetivos con el sector privado; v) mejorar la disponibilidad y desagregación de los datos; y vi) apoyar investigaciones en desigualdades en RAM.


[ABSTRACT]. Objective. Measure social inequalities in antimicrobial resistance in Neisseria gonorrhoeae in Colombia. Methods. Ecological study using a multi-panel of data, disaggregated at the subnational level, and using isolations of N. gonorrhoeae as a proxy for antimicrobial resistance (AMR) between 2009 and 2018. A sociodemographic characterization, an analysis of the antimicrobial sensitivity of isolations of N. gonorrhoeae, and a measurement of inequalities in AMR in N. gonorrhoeae were conducted using the slope index of inequality, the relative inequality index, and the concentration index. Results. The findings indicate antimicrobial resistance to penicillin (50.7%) and tetracycline (67.3%) in isolations of N. gonorrhoeae, and the existence of absolute and relative inequalities during the study period. Access barriers to health services, not having received information on the prevention of sexually transmitted infections, basic unmet needs, and illiteracy explained the inequalities in AMR in N. gonorrhoeae. Conclusions. Six recommendations emerged with a view to largely containing AMR in N. gonorrhoeae: i) increase awareness of safe sexual and reproductive health; ii) rethink how to deliver key messages with an equity approach; iii) improve information, prescription, and drug chain systems; iv) form coalitions to improve response and share objectives with the private sector; v) improve the availability and disaggregation of data; and vi) support research on inequalities in AMR.


[RESUMO]. Objetivo. Medir as desigualdades sociais na resistência antimicrobiana de Neisseria gonorrhoeae na Colômbia. Métodos. Estudo ecológico que utilizou um painel múltiplo de dados desagregados ao nível subnacional de isolados de N. gonorrhoeae como substituto para a resistência antimicrobiana (RAM) entre 2009 e 2018. Realizamos uma caracterização sociodemográfica, uma análise da sensibilidade antimicrobiana dos isolados de N. gonorrhoeae e uma medição das desigualdades na RAM para N. gonorrhoeae utilizando o índice absoluto de desigualdade, o índice relativo de desigualdade e o índice de concentração. Resultados. Os resultados indicam a existência de resistência antimicrobiana nos isolados de N. gonorrhoeae à penicilina (50,7%) e à tetraciclina (67,3%), bem como desigualdades absolutas e relativas durante o período analisado. Os obstáculos no acesso aos serviços de saúde, a falta de informações sobre a prevenção de infecções sexualmente transmissíveis, a existência de necessidades básicas não satisfeitas e o analfabetismo explicam as desigualdades na RAM de N. gonorrhoeae. Conclusões. Podem ser feitas seis recomendações para conter em grande medida a RAM de N. gonorrhoeae: i) aumentar a conscientização sobre a saúde sexual e reprodutiva segura, ii) repensar a forma de transmitir as mensagens principais, com foco na equidade, iii) melhorar os sistemas de informação, prescrição e a cadeia de medicamentos, iv) criar coalisões para melhorar a capacidade de resposta e compartilhar objetivos com o setor privado, v) melhorar a disponibilidade e a desagregação de dados e vi) apoiar a pesquisa sobre as desigualdades na RAM.


Assuntos
Resistência Microbiana a Medicamentos , Neisseria gonorrhoeae , Disparidades nos Níveis de Saúde , Saúde Reprodutiva , Sistemas de Saúde , Colômbia , Resistência Microbiana a Medicamentos , Disparidades nos Níveis de Saúde , Saúde Reprodutiva , Sistemas de Saúde , Resistência Microbiana a Medicamentos , Disparidades nos Níveis de Saúde , Saúde Reprodutiva , Sistemas de Saúde , Colômbia
20.
Sci Rep ; 10(1): 11198, 2020 07 08.
Artigo em Inglês | MEDLINE | ID: mdl-32641782

RESUMO

Halving the proportion of the people without sustainable access to safe drinking water and basic sanitation is among the Sustainable Development Goals (SDG). Lack of access to safe drinking water has been associated with the prevalence of waterborne diseases. Due to this reported association, the development of household water treatment devices has been an alternative to improve the quality supply of domestic water. In this study, we aimed to evaluate the performance of a ceramic silver-impregnated pot filter (CSF) system coupled with an adsorption process, composed of silver-impregnated granular activated carbon and zeolite (CSF + GAC-Z), to remove waterborne bacteria Escherichia coli and Salmonella spp. from spiked water. The performance of this system was compared with the conventional CSF system. In this respect, we evaluated six CSF and six CSF + GAC-Z using spiked water with 103 and 102 CFU/mL of E. coli and Salmonella spp. The mean percentage of removals ranged between 98% and 99.98%. The highest bacterial removal efficiency was recorded by the CSF + GAC-Z (99%) and CSF (99.98%) for E. coli and Salmonella spp., respectively, but no significant statistical differences were found between filtration systems. Our findings suggest that the CSF + GAC-Z system was effective in the removal of waterborne bacteria from spiked water.


Assuntos
Cerâmica/química , Água Potável/microbiologia , Filtração/instrumentação , Prata/química , Purificação da Água/instrumentação , Adsorção , Carvão Vegetal/química , Escherichia coli , Salmonella , Poluição da Água , Zeolitas/química
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