Increased Expression of lncRNA AC000120.7 and SENP3-EIF4A1 in Patients with Acute Respiratory Distress Syndrome Induced by SARS-CoV-2 Infection: A Pilot Study.

COVID-19, a disease caused by the SARS-CoV-2 virus, poses significant threats to the respiratory system and other vital organs. Long non-coding RNAs have emerged as influential epigenetic regulators and promising biomarkers in respiratory ailments. The objective of this study was to identify candidate lncRNAs in SARS-CoV-2-positive individuals compared to SARS-CoV-2-negative individuals and investigate their potential association with ARDS-CoV-2 (acute respiratory distress syndrome). Employing qRT-PCR, we meticulously examined the expression profiles of a panel comprising 84 inflammation-related lncRNAs in individuals presenting upper respiratory infection symptoms, categorizing them into those testing negative or positive for SARS-CoV-2. Notably, first-phase PSD individuals exhibited significantly elevated levels of AC000120.7 and SENP3-EIF4A1. In addition, we measured the expression of two lncRNAs, AC000120.7 and SENP3-EIF4A1, in patients with ARDS unrelated to SARS-CoV-2 (n = 5) and patients with ARDS induced by SARS-CoV-2 (ARDS-CoV-2, n = 10), and interestingly, expression was also higher among patients with ARDS. Intriguingly, our interaction pathway analysis unveiled potential interactions between lncRNA AC000120.7, various microRNAs, and genes associated with inflammation. This study found higher expression levels of lncRNAs AC000120.7 and SENP3-EIF4A1 in the context of infection-positive COVID-19, particularly within the complex landscape of ARDS.

Synthesis and Characterization of a New Cu(II) Paddle-Wheel-like Complex with 4-Vinylbenzoate as an Inorganic Node for Metal-Organic Framework Material Design.

A new Cu(II) paddle-wheel-like complex with 4-vinylbenzoate was synthesized using acetonitrile as the solvent. The complex was characterized by X-ray crystal diffraction, FT-IR, diffuse reflectance spectroscopy, thermogravimetric, differential scanning calorimetric, magnetic susceptibility, and electronic paramagnetic resonance analyses. The X-ray crystal diffraction analysis indicated that each copper ion was bound at an equatorial position to four oxygen atoms from the carboxylate groups of the 4-vinylbenzoate ligand in a square-based pyramidal geometry. The distance between the copper ions was 2.640(9) Å. The acetonitrile molecules were coordinated at the axial position to the copper ions. Exposure of the Cu(II) complex to humid air promoted the gradual replacement of the coordinated acetonitrile by water molecules, but the complex structure integrity remained. The EPR spectra exhibited signals attributed to the presence of a mixture of the monomeric (S = ½) and dimeric (S = 1) copper species in a possible 3:1 ratio. The magnetic studies revealed a peak at 50-100 K, which could be associated with the oxygen absorption capacity of the Cu(II)-vba complex.

Rickettsia Vaccine Candidate pVAX1-OmpB24 Stimulates TCD4+INF-γ+ and TCD8+INF-γ+ Lymphocytes in Autologous Co-Culture of Human Cells.

BACKGROUND: In recent years, promising vaccination strategies against rickettsiosis have been described in experimental animal models and human cells. OmpB is considered an immunodominant antigen that is recognized by T and B cells. The aim of this study was to identify TCD4+INF-γ+ and TCD8+INF-γ+ lymphocytes in an autologous system with macrophages transfected with the vaccine candidate pVAX1-OmpB24. Lymphocytes and monocytes from 14 patients with Rickettsia were isolated from whole blood. Monocytes were differentiated into macrophages and transfected with the plasmid pVAX1-OmpB24 pVax1. Isolated lymphocytes were cultured with transfected macrophages. IFN-γ-producing TCD4+ and TCD8+ lymphocyte subpopulations were identified by flow cytometry, as was the percentage of macrophages expressing CD40+, CD80+, HLA-I and HLA-II. Also, we analyzed the exhausted condition of the T lymphocyte subpopulation by PD1 expression. Macrophages transfected with pVAX1-OmpB24 stimulated TCD4+INF-γ+ cells in healthy subjects and patients infected with R. typhi. Macrophages stimulated TCD8+INF-γ+ cells in healthy subjects and patients infected with R. rickettsii and R. felis. Cells from healthy donors stimulated with OmpB-24 showed a higher percentage of TCD4+PD1+. Cells from patients infected with R. rickettsii had a higher percentage of TCD8+PD-1+, and for those infected with R. typhi the larger number of cells corresponded to TCD4+PD1+. Human macrophages transfected with pVAX1-OmpB24 activated TCD4+IFN-γ+ and CD8+IFN-γ+ in patients infected with different Rickettsia species. However, PD1 expression played an important role in the inhibition of T lymphocytes with R. felis.

[Clinical evolution of 31 adult patients with immune thrombocytopenia treated with rituximab]. / Evolución clínica de 31 pacientes adultos con trombocitopenia inmune tratados con rituximab.

Background: Primary immune thrombocytopenia (ITP) is an autoimmune disease that could cause different grades of bleeding, which could even threat the patients' life or make them experience poor quality of life. ITP can be treated with rituximab either as a first or second-line therapy option, resulting in an overall response of 60%. The best results have been observed on young women with a short time of disease evolution. Objective: To report the response and clinical evolution by providing therapy with rituximab, which was used as a rescue in adult patients with either persistent or chronical ITP. Material and methods: 4 weekly doses of rituximab were administered to 31 adult patients and it was made a follow-up with them for a year. Results: Out of the 31 patients, a complete response was observed (CR, platelets ≥ 100 x 109 /L) in 22 patients (71%), and a partial response (PR, platelets ≥ 30 and ≤ 99 x 109 /L) in 5 patients (16%); the global response was of 87%. 3 patients relapsed during follow-up and sustained response after rituximab (≥ 12 months) was held in 24 patients, 21 (67%) with CR and 3 (10%) with PR. Side effects were from low to moderate in 13% of patients. Conclusions: Rituximab showed its effectiveness in patients with ITP as a rescue therapy in both chronical and persistent phases. Sustained response ≥ 12 months was of 77%, with good tolerance and acceptable toxicity.

Introducción: la trombocitopenia inmune primaria (TIP) es una enfermedad autoinmune que puede causar hemorragias de diferente intensidad, las cuales llegan a poner en peligro la vida y alteran la calidad de vida de los pacientes. Puede ser tratada con rituximab como primera o segunda línea y la respuesta global es de 60%. Los mejores resultados se han observado en mujeres jóvenes con tiempo breve de evolución. Objetivo: reportar la respuesta y la evolución clínica con el tratamiento de rituximab usado como un rescate en pacientes adultos con TIP en fase crónica o persistente de la enfermedad. Material y métodos: se le administró rituximab de forma semanal por cuatro dosis a 31 pacientes adultos y se les hizo seguimiento durante un año. Resultados: de los 31 pacientes adultos, se observó respuesta completa (RC, plaquetas ≥ 100 x 109 /L) en 22 pacientes (71%) y respuesta parcial (RP, plaquetas ≥ 30 y ≤ 99x 109 /L) en 5 pacientes (16%); la respuesta global fue de 87%. Tres pacientes recayeron durante el seguimiento y la respuesta sostenida (≥ 12 meses) se mantuvo en 24 pacientes, 21 (67%) con RC y 3 (10%) con RP. Los efectos secundarios fueron de leves a moderados en 13% de los pacientes. Conclusiones: el rituximab demostró su utilidad en pacientes con TIP como tratamiento de rescate en las fases crónica y persistente. La respuesta sostenida ≥ 12 meses fue de 77%, con buena tolerancia y toxicidad aceptable.

Mejoría del dolor, la función y la calidad de vida en dolor lumbar subagudo: ensayo clínico controlado con ejercicio vs. AINES / Improvement of pain, function and quality of life in subacute low back pain: controlled clinical trial with exercise vs. NSAIDs

Introducción. El dolor lumbar es una de las causas más frecuentes de consulta y discapacidad en pacientes, y según su evolución temporal se puede clasificar como agudo, subagudo y crónico. Objetivo. Estimar en pacientes con Dolor Lumbar Subagudo (DLS), la eficacia de un programa de ejercicio comparado con antiinflamatorios no esteroideos (AINES). Métodos. Se realizó un ensayo clínico controlado aleatorio, con enmascaramiento simple en 90 pacientes y DLS con o sin radiculopatía, 46 pacientes fueron asignados a un programa de ejercicio físico y 44 a tratamiento con AINES. El desenlace primario fue la mejoría del dolor y los secundarios mejoría en la función, calidad de vida, ausentismo laboral y depresión con seguimiento a 1, 3 y 6 meses. Resultados. Al mes, no se registró diferencias en el dolor entre los grupos de 8,16 (IC 95 % -2,19 a 18,51), sin embargo, en el grupo de ejercicios hubo una mejoría de 47,3 (SD: 19,8) a 28,8 (SD: 20,5), p <0,001, y en el grupo de AINES de 45,2 (SD: 22,6) a 34,9 (SD: 25,0), p = 0,018. Otras muestras de mejoría se observaron en la función medida por el Índice de Discapacidad de Oswestry (ODI), la cual mejoró al mes en el grupo de ejercicio (p<0,001), mientras,la función física también mejoró al mes en el grupo de ejercicio (p= 0,038). Otra mejoría se observó en el dolor, función y calidad de vida que se mantuvo a los 3 y 6 meses en ambos grupos. Finalmente, La recurrencia fue mayor en el grupo de AINES: 25,5 % vs. 7,1 % (p= 0,04) al mes; 25,5 % vs. 7,1 % (p= 0,04) y 20,5 % vs. 5 % (p= 0,04), a los 3 y 6 meses. Conclusión. El ejercicio supervisado fue más efectivo que los AINES para disminuir la discapacidad y las recurrencias y mejorar la función física en pacientes con DLS.

Introduction. Low back pain is one of the most frequent causes of consultation and disability in patients, and according to its temporal evolution it can be classified as acute, subacute and chronic. Objective. To estimate the efficacy of an exercise program compared to non-steroidal anti-inflammatory drugs (NSAIDs) in patients with subacute low back pain (LBP). Methods. A randomized, single-masked, controlled clinical trial was conducted in 90 patients and DLS with or without radiculopathy, 46 patients were assigned to a physical exercise program and 44 to NSAID treatment. The primary outcome was improvement in pain and the secondary outcomes were improvement in function, quality of life, work absenteeism and depression with follow-up at 1, 3 and 6 months. Results. At 1 month, there was no difference in pain between groups of 8.16 (95 % CI -2.19 to 18.51), however, in the exercise group there was an improvement from 47.3 (SD: 19.8) to 28.8 (SD: 20.5), p <0.001, and in the NSAID group from 45.2 (SD: 22.6) to 34.9 (SD: 25.0), p = 0.018. Other signs of improvement were seen in function as measured by the Oswestry Disability Index (ODI), which improved at 1 month in the exercise group (p<0.001), while physical function also improved at 1 month in the exercise group (p= 0.038). Another improvement was observed in pain, function and quality of life which was maintained at 3 and 6 months in both groups. Finally, recurrence was higher in the NSAID group: 25.5 % vs. 7.1 % (p= 0.04) at 1 month; 25.5 % (p= 0.04) at 1 month; 25.5 % (p= 0.038) in the exercise group (p= 0.038) at 1 month.

Altered PTPN22 and IL10 mRNA Expression Is Associated with Disease Activity and Renal Involvement in Systemic Lupus Erythematosus.

Systemic lupus erythematosus (SLE) is a complex autoimmune disease with very heterogeneous clinical behavior between affected individuals. Therefore, the search for biomarkers clinically useful for the diagnosis, prognosis, and monitoring of the disease is necessary. Here, we determined the association between PTPN22, IL10, OAS2, and CD70 mRNA expression with the clinical characteristics and with the serum levels of IL-10, IFN-γ, and IL-17 in SLE patients. Forty patients with SLE and 34 control subjects (CS) were included, mRNA expression was determined by real-time qPCR and cytokine levels were quantified by a multiplex bead-based immunoassay. Compared to CS, SLE patients showed increased IL10 mRNA and high IL-10 and IL-17 serum levels; in contrast, PTPN22 mRNA and IFN-γ were decreased. PTPN22 and IL10 gene expression was negatively correlated with Mex-SLEDAI score and were notably downregulated in SLE patients with lupus nephritis. Interestingly, SLE patients with renal damage were the ones with the lowest levels of PTPN22 and IL10 mRNA and the highest SLEDAI scores. No associations were observed for OAS2 and CD70 mRNA and IL-10, IL-17, and IFN-γ. In conclusion, we suggest that the assessment of IL10 and PTPN22 mRNA could be useful for monitoring disease activity in SLE patients showing renal involvement.

Development of a Clinical Practice Guideline for Lower Limb Amputees. A Knowledge Translation Process in a Middle Income Country.

Background and Aim: Knowledge translation processes are necessary for improving patients' and communities' health outcomes. The aim of this study was to systematically develop evidence-based recommendations for people over 16 years of age who are in risk for or have suffered a lower limb amputation for medical reasons (vascular, diabetes mellitus) or trauma (civilian or military trauma) in order to improve function, quality of life, decrease complications and morbidity. Methods: Following the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach we developed a Clinical Practice Guideline (CPG) for lower limb amputees with funding from the Ministry of Health in Colombia and participation of a multidisciplinary group. We included patients' preferences. Based on the scope, purposes and objectives the questions were elaborated with the PECOT strategy. The evidence search was performed for each question in the main databases: Cochrane Library, Embase and PubMed, without time limit or language restriction. Teams were formed with thematic experts and clinical epidemiologists to review the clinical studies, describe the evidence, and evaluate the quality of the body of evidence with the GRADE methodology. The recommendations were made according to the judgments proposed by the GRADE working group. We conducted a stakeholder's dialogue as a mechanism for the external validation of the guideline implementation. Results: The CPG included 43 recommendations related to the diagnosis, surgical treatment, rehabilitation, prescription and adaptation of the prosthesis. They were strong in favor 37.2, weak in favor 53.5, strong against 2.3, Weak against 7.0%. Quality of evidence was high in 0, moderate in 11.6, low in 58.1, and very low 30.2%. Discussion: In 93% of the recommendations, the quality of the evidence was between low and very low. This is why it was so important to validate and discuss each recommendation with an expanded multidisciplinary group. The research group identified 25 interventions and five milestones to be prioritized in the implementation and in the stakeholder's dialogue participants identified opportunities and barriers for implementation of recommendations. Conclusion: It is necessary to develop a national policy for implementation strategies of CPG recommendations that promotes the necessary arrangements for the provision of services for diagnosis, treatment, and rehabilitation of individuals with amputations.

Characterization of the Sensory Nerve Action Potential of the Sural Nerve in Patients Over 60 Years of Age without Peripheral Neuropathy.

Demonstration of the possibility to obtain the sensory nerve action potential (SNAP) of sural nerve in patients over 60 years old, without peripheral neuropathy. Prospective study on 101 patients older than 60 years of age. Stimulation was applied 12 cm proximal to the recording point. Two hundred and two SNAPs of the sural nerve were collected with an average peak latency of 3.2 ms, onset latency of 2.6 ms, peak-to-peak amplitude of 15.2 µV and velocity of 45.7 m/s. It was possible to obtain the sural nerve SNAP in all tested patients older than 60, without peripheral neuropathy. The values obtained in this study prove to be useful as a reference in the evaluation of patients older than 60 years of age.

Report of Adverse Effects Following Population-Wide COVID-19 Vaccination: A Comparative Study between Six Different Vaccines in Baja-California, Mexico.

After emergency authorization, different COVID-19 vaccines were administered across Mexico in 2021, including mRNA, viral vector, and inactivated platform vaccines. In the state of Baja-California, 3,516,394 doses were administered, and 2285 adverse events (AE) were registered in the epidemiological surveillance system in 2021. Incidence rates per 100,000 doses were calculated for total, mild (local and systemic), and severe AE for each vaccine. Symptoms were compared between mRNA and viral vector/inactivated virus vaccines. The overall incidence rate for all AE was 64.98 per 100,000 administered doses; 79.05 AE per 100,000 doses for mRNA vaccines; and 56.9 AE per 100,000 doses for viral vector/inactivated virus vaccine platforms. AE were at least five times higher in recipients of the AstraZeneca vaccine from the Serum Institute of India (AZ from SII). Local injection site symptoms were more common in mRNA vaccines while systemic were more prevalent in viral vector/inactivated virus vaccines. Severe AE rates were similar across all administered vaccines (0.72-1.61 AE per 100,000 doses), except for AZ from SII, which documented 12.6 AE per 100,000 doses. Among 32 hospitalized severe cases, 28 (87.5%) were discharged. Guillain-Barré Syndrome was the most common serious AE reported (n = 7). Adverse events rates differed among vaccine manufacturers but were consistent with clinical trials and population-based reports in the literature.

Ruta integral de atención en salud para personas con amputaciones de miembro inferior, para mejorar el funcionamiento y la calidad de vida / Integral pathway of health care for people with lower limb amputations, to improve the functioning and quality of life / Rota abrangente de cuidados de saúde de pessoas com amputações de membros inferiores, para melhorar o funcionamento e qualidade de vida

Resumen Objetivo: Presentar el estudio mediante el cual se construyó una ruta integral de atención en salud (RIAS) para la atención del paciente amputado de miembro inferior por causas traumática, vascular o diabetes mellitus, cuyo fin es implementar las recomendaciones de la Guía de práctica clínica del paciente amputado y garantizar la atención integral en salud de esta población en Colombia. Con la ruta se pretende orientar a los actores involucrados en la ejecución de intervenciones individuales para el diagnóstico, el tratamiento y la rehabilitación, e impactar en los desenlaces en salud y equidad de esta población. Metodología: Este estudio responde a una estrategia de mejoramiento de la atención en salud. Para esto, se revisó el Manual metodológico para la elaboración e implementación de las RIAS; se creó el grupo desarrollador de la ruta; se priorizaron y describieron las intervenciones en función del proceso continuo de atención en salud; se evaluó la práctica asistencial actual con grupos focales de pacientes y profesionales; se formularon los resultados esperados en el proceso de gestión y atención en salud (hitos), y se elaboró el diagrama de la ruta. Resultados: A partir de la Guía de práctica clínica se elaboraron 25 intervenciones individuales priorizadas y caracterizadas según el actor responsable, la población objetivo y el entorno. Para cada una de las intervenciones se presentan resultados esperados en salud, calidad de prestación de servicios, aspectos relacionados con la equidad, y la perspectiva de pacientes y actores involucrados con la atención. Se construyeron los indicadores para el seguimiento e implementación de la ruta. Conclusión: Se construyó la primera ruta integral de atención en salud del paciente con amputación de miembro inferior, de acuerdo con los lineamientos del manual del Ministerio de Salud y de la Protección Social.

Abstract Objective: Build an Integral Health Care Pathway for the care of patients with lower limb amputation due to traumatic, vascular or diabetes mellitus causes, in order to implement the recommendations of the cpg for amputee patients and guarantee comprehensive health care for this population in Colombia. Methodology: This study is a strategy to improve health care. Carried out by a review of the Methodological Manual for the Development and Implementation of Comprehensive Health Care Pathway, then the development group was created. A process of prioritization and description of required individual interventions was developed based on health care. Evaluation of current care practice with focus groups, formulation of milestones and development of the intervention diagram. Results: 25 individual interventions were prioritized and characterized according to the responsible actor, target population and environment. Expected results in health, quality of service delivery, issues related to equity, as well as the perspective of patients and actors involved with care are shown. Indicators were built for monitoring and implementation of the pathway. Conclusion: With the previous results, the first Integral Health Care Pathway for the Lower Limb Amputee Patient was developed. It intends to guide the actors involved, when executing individual interventions for the diagnosis, treatment and rehabilitation, to impact outcomes in health and equity of this group .

Resumo Objetivo: Construir uma Rota de Atenção Integral à Saúde do Paciente Amputado do Membro Inferior por causas traumáticas, vasculares ou diabetes mellitus, com a finalização de implementar as recomendações do gpc do paciente amputado e garantir a atenção integral na saúde desta población em Colômbia. Metodologia: Este estudo responde a uma estratégia para melhorar os cuidados de saúde. Foi realizada uma revisão do Manual Metodológico para o Desenvolvimento e Implementação de Rotas Integrais de Atenção à Saúde, criação do grupo de desenvolvimento da rota. Um processo de priorização e descrição das intervenções individuais necessárias foi desenvolvido com base na continuidade dos cuidados de saúde. Avaliação da prática assistencial atual com grupos focais, formulação de marcos e desenvolvimento do diagrama de intervenção. Resultados: 25 intervenções individuais foram priorizadas e caracterizadas de acordo com o ator responsável, população-alvo e ambiente. Determinação dos resultados esperados em saúde, qualidade da prestação de serviços, questões relacionadas a equidade, bem como a perspectiva de pacientes e atores envolvidos no atendimento. Foram construídos indicadores para o monitoramento e implementação da rota. Conclusão: Com os resultados anteriores, foi construída a primeira Rota de Atenção Integral à Saúde do paciente com amputação de membros inferiores por causas traumáticas e neurovasculares, com sua implementação, visando orientar os atores envolvidos na execução de intervenções individuais para a diagnóstico, tratamento e reabilitação, impactar os resultados em saúde e eqüidade dessa população.

Fatal Pediatric Meningococcal Invasive Disease Caused by Neisseria meningitidis Serogroup C and Co-Infected With SARS-CoV-2: Report of a Case in Tijuana, Mexico.

Invasive meningococcal disease (IMD) is a severe infection caused by Neisseria meningitidis, with mortality rates ranging from 10% to 40%. IMD has been confirmed to be an endemic disease in Tijuana, Mexico, right across the border from San Diego, California. To date, coronavirus disease 2019 (COVID-19) is the most severe pandemic, causing more than 5.5 million deaths globally. Prior or co-infections of influenza with IMD has been reported previously; however, the participation of other respiratory viruses facilitating the invasiveness of N. meningitidis is either not shown or remains unclear. Here, we report the case of an unvaccinated (for IMD and COVID-19) seven-year-old child who had confirmed fatal IMD caused by N. meningitidis, serogroup C, and was co-infected by severe acute respiratory syndrome coronavirus 2.

Amino Acid Complexes of Zirconium in a Carbon Composite for the Efficient Removal of Fluoride Ions from Water.

Amino acid complexes of zirconia represent an entirely new class of materials that were synthesized and studied for the first time for the decontamination of fluoride ion containing aqueous solutions. Glutamic and aspartic acid complexes of zirconia assembled with thin carbon (stacked graphene oxide) platelets deriving from graphite oxide (GO) were synthesized by a two-step method to prepare adsorbents. The characterization of the complexes was carried out using infrared spectroscopy to determine the functional groups and the types of interaction between the composites and fluoride ions. To reveal the mechanisms and extent of adsorption, two types of batch adsorption measurements were performed: (i) varying equilibrium fluoride ion concentrations to construct adsorption isotherms at pH = 7 in the absence of added electrolytes and (ii) using fixed initial fluoride ion concentrations (10 mg/L) with a variation of either the pH or the concentration of a series of salts that potentially interfere with adsorption. The experimental adsorption isotherms were fitted by three different theoretical isotherm equations, and they are described most appropriately by the two-site Langmuir model for both adsorbents. The adsorption capacities of Zr-glutamic acid-graphite oxide and Zr-aspartic acid-graphite oxide are 105.3 and 101.0 mg/g, respectively. We found that two distinct binding modes are combined in the Zr-amino acid complexes: at low solution concentrations, F- ions are preferentially adsorbed by coordinating to the surface Zr species up to a capacity of ca. 10 mg/g. At higher concentrations, however, large amounts of fluoride ions may undergo anion exchange processes and physisorption may occur on the positively charged ammonium moieties of the interfacially bound amino acid molecules. The high adsorption capacity and affinity of the studied dicarboxylate-type amino acids demonstrate that amino acid complexes of zirconia are highly variable materials for the safe and efficient capture of strong Lewis base-type ions such as fluoride.

Prevalence of SARS-CoV-2 infection in Baja California, Mexico: Findings from a community-based survey in February 2021 in the Mexico-United States border.

Between March 2020 and February 2021, the state of Baja California, Mexico, which borders the United States, registered 46,118 confirmed cases of COVID-19 with a mortality rate of 238.2 deaths per 100,000 residents. Given limited access to testing, the population prevalence of SARS-CoV-2 infection is unknown. The objective of this study is to estimate the seroprevalence and real time polymerase chain reaction (RT-PCR) prevalence of SARS-CoV-2 infection in the three most populous cities of Baja California prior to scale-up of a national COVID-19 vaccination campaign. Probabilistic three-stage clustered sampling was used to conduct a population-based household survey of residents five years and older in the three cities. RT-PCR testing was performed on nasopharyngeal swabs and SARS-CoV-2 seropositivity was determined by IgG antibody testing using fingerstick blood samples. An interviewer-administered questionnaire assessed participants' knowledge, attitudes, and preventive practices regarding COVID-19. In total, 1,126 individuals (unweighted sample) were surveyed across the three cities. Overall prevalence of SARS-CoV-2 infection by RT-PCR was 7.8% (95% CI 5.5-11.0) and IgG seroprevalence was 21.1% (95% CI 17.4-25.2). There was no association between border crossing in the past 6 months and SARS-CoV-2 prevalence (unadjusted OR 0.40, 95%CI 0.12-1.30). While face mask use and frequent hand washing were common among participants, quarantine or social isolation at home to prevent infection was not. Regarding vaccination willingness, 30.4% (95% CI 24.4-3 7.1) of participants said they were very unlikely to get vaccinated. Given the high prevalence of active SARS-CoV-2 infection in Baja California at the end of the first year of the pandemic, combined with its low seroprevalence and the considerable proportion of vaccine hesitancy, this important area along the Mexico-United States border faces major challenges in terms of health literacy and vaccine uptake, which need to be further explored, along with its implications for border restrictions in future epidemics.

Two-Step Triethylamine-Based Synthesis of MgO Nanoparticles and Their Antibacterial Effect against Pathogenic Bacteria.

Magnesium oxide nanoparticles (MgO NPs) were obtained by the calcination of precursor microparticles (PM) synthesized by a novel triethylamine-based precipitation method. Scanning electron microscopy (SEM) revealed a mean size of 120 nm for the MgO NPs. The results of the characterizations for MgO NPs support the suggestion that our material has the capacity to attack, and have an antibacterial effect against, Gram-negative and Gram-positive bacteria strains. The ability of the MgO NPs to produce reactive oxygen species (ROS), such as superoxide anion radicals (O2•-) or hydrogen peroxide (H2O2), was demonstrated by the corresponding quantitative assays. The MgO antibacterial activity was evaluated against Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli bacteria, with minimum inhibitory concentrations (MICs) of 250 and 500 ppm on the microdilution assays, respectively. Structural changes in the bacteria, such as membrane collapse; surface changes, such as vesicular formation; and changes in the longitudinal and horizontal sizes, as well as the circumference, were observed using atomic force microscopy (AFM). The lipidic peroxidation of the bacterial membranes was quantified, and finally, a bactericidal mechanism for the MgO NPs was also proposed.

Inverse correlation between levels of glycated haemoglobin and expression levels of SERCA protein in Mexican patients with type 2 diabetes mellitus.

We examined the association between sarco/endoplasmic reticulum calcium ATPase (SERCA) expression and glycated hemoglobin (HbA1c) levels since alterations in this protein expression are associated with the genesis of insulin resistance. HbA1c levels and SERCA protein expression from platelets of Mexican patients diagnosed with type 2 diabetes mellitus (T2DM) were analyzed showing lower values of SERCA expression against the normal values we find in healthy people. Interestingly, as diabetes condition got worse; SERCA protein expression decreased gradually until it was undetectable. The results showed an inverse correlation between HbA1c and SERCA protein expression in T2DM patients. .

Individual, health system, and contextual barriers and facilitators for the implementation of clinical practice guidelines: a systematic metareview.

INTRODUCTION: Clinical practice guidelines (CPGs) are designed to improve the quality of care and reduce unjustified individual variation in clinical practice. Knowledge of the barriers and facilitators that influence the implementation of the CPG recommendations is the first step in creating strategies to improve health outcomes. The present systematic meta-review sought to explore the barriers and facilitators for the implementation of CPGs. METHODS: A search was conducted in the PubMed, Embase, Cochrane, Health System Evidence and International Guideline Library (G-I-N) databases. Systematic reviews of qualitative, quantitative or mixed-methods studies that identified barriers or facilitators for the implementation of CPGs were included. The selection of the title and abstract, the evaluation of the full text, extraction of the data and the quality assessment were carried out by two independent reviewers. To summarise the evidence, we grouped the barriers and facilitators according to the following contexts: political and social, health organisational system, guidelines, health professionals and patients. RESULTS: Overall, 25 systematic reviews were selected. The relevant barriers in the social-political context were the absence of a leader, difficulties with teamwork and a lack of agreement with colleagues. Relevant barriers in the health system were a lack of time, financial problems and a lack of specialised personnel. Barriers of the CPGs included a lack of clarity and a lack of credibility in the evidence. Regarding the health professional, a lack of knowledge about the CPG and confidence in oneself were relevant. Regarding patients, a negative attitude towards implementation, a lack of knowledge about the CPG and sociocultural beliefs played a role. Some of the most frequent facilitators were consistent leadership, commitment of the members of the team, administrative support of the institution, existence of multidisciplinary teams, application of technology to improve the practice and education regarding the guidelines. CONCLUSIONS: The barriers and facilitators described in this review are factors that influence the implementation of evidence in clinical practice. Knowledge of these factors should contribute to the development of a theoretical basis for the creation of CPG implementation strategies to improve professional practice and health outcomes for patients.

Implementation of the clinical practice guideline for individuals with amputations in Colombia: a qualitative study on perceived barriers and facilitators.

BACKGROUND: The issue of lower extremity amputation has been in the Colombian political agenda for its relationship with the armed conflict and antipersonnel mines. In 2015 the Colombian Ministry of Health published a national clinical practice guideline (CPG) for amputee patients. However, there is a need to design implementation strategies that target end-users and the context in which the CPG will be used. This study aims to identify users' perceptions about the barriers and facilitators for implementing the guideline for the care of amputee patients in a middle-income country such as Colombia. METHODS: Semi-structured interviews were conducted with 38 users, including patients, health workers, and administrative staff of institutions of the health system in Colombia. Individuals were purposively selected to ensure different perspectives, allowing a balance of individual positions. RESULTS: According to participants' perceptions, barriers to implementation are classified as individual barriers (characteristics of the amputee patient and professionals), health system barriers (resource availability, timely care, information systems, service costs, and regulatory changes), and barriers related to clinical practice guidelines (utility, methodological rigour, implementation flexibility, and characteristics of the group developing the guidelines). CONCLUSIONS: Our study advances knowledge on the perceived individual and health system barriers and facilitators for the implementation of the CPG for amputee patients in Colombia. Importantly, the governance, financial, and service delivery arrangements of the Colombian health system are determining factors in implementing CPGs. For example, the financial arrangements between the insurance companies and the health care provider institutions were identified as barriers for the implementation of recommendations related to the continuity and opportunity of care of patients with amputations. The design of implementation strategies that successfully address the individual behaviours and the contextual health systems arrangements may significantly impact the health care process for amputee patients in Colombia.

Medial femoral cutaneous nerve conduction study with distal recording: A novel technique.

BACKGROUND: A new technique to obtain the sensory nerve action potential (SNAP) of the medial femoral cutaneous nerve is described. METHODS: SNAPs were recorded from 104 subjects with a bar recording electrode 10 cm proximal to the patella along an imaginary line drawn between the medial edge of the patella and the femoral pulse below the inguinal ligament. Stimulation was applied 14 cm proximal to the recording point. RESULTS: There were 104 healthy subjects. Onset latency of the SNAPs was 2.20 ± 0.16 ms (mean ± SD), peak latency was 2.70 ± 0.16 ms, peak-to-peak amplitude was 7.5 ± 3.0 µV, and conduction velocity was 51.5 ± 3.0 m/s. The side-to-side difference in the mean amplitude was 22.27 ± 13.6%. CONCLUSIONS: This new technique is easy, reliable, and reproducible, and should prove useful for the evaluation of neuropathies of the medial femoral cutaneous nerve.

[MASK (Mobile Airways Sentinel Network), a mobile App with ARIA's comprehensive solution in Spanish-speaking countries]. / MASK (Mobile Airways Sentinel Network), una app móvil con la solución integral de ARIA en países de habla hispana.

Although there are high quality clinical guidelines about allergic rhinitis, many patients receive deficient treatment, partly due to the high level of self-medication. MASK (Mobile Airways Sentinel Network) is an integral part of a project against chronic diseases which it is focused on active and healthy aging and is supported by the European Union. It forms the third phase of ARIA (Allergic Rhinitis and its Impact on Asthma) in which, through a mobile app on a smart device, the purpose is to guide patients in the control of their multimorbidity, allergic rhinitis or conjunctivitis, or asthma. The "Allergy Diary" app by MACVIA-ARIA is free and it is available for Android and iOS; on it, patients indicate how unpleasant the symptoms are on a daily basis through five screens with an analogous visual scale; two more screens were recently added (sleep affectation). With the app, it is also possible to download the information of the "Allergy Diary" on the physician's computer through a QR code at the moment of the medical consultation. In this article, we review the first year of experience in Spain, Mexico and Argentina, where the Spanish version is used.

Aunque existen guías clínicas de alta calidad sobre rinitis alérgica, numerosos pacientes reciben tratamiento deficiente, en parte debido al alto grado de automedicación. MASK (Mobile Airways Sentinel Network) forma parte integral de un proyecto apoyado por la Unión Europea contra las enfermedades crónicas y enfocado al envejecimiento activo y saludable. Constituye la tercera fase de ARIA (Allergic Rhinitis and its Impact on Asthma), en la cual mediante una aplicación móvil en un dispositivo inteligente se intenta guiar al paciente en el control de su multimorbilidad, rinitis o conjuntivitis alérgicas o asma. La aplicación Diario de Alergia por MACVIA-ARIA es gratuita y está disponible para Android e iOS; en ella, los pacientes indican diariamente cuánto les molestan los síntomas a través de cinco pantallas con una escala visual análoga; recientemente se agregaron dos pantallas más (afectación del sueño). La aplicación también permite descargar los datos del "Diario de alergias" en la computadora del médico en el momento de la consulta a través de un código QR. En este artículo reseñamos el primer año de experiencia en España, México y Argentina, que utilizan la versión española.

[MASK (Mobile Airways Sentinel Network). ARIA's comprehensive solution for mobile app for the multimorbidity of allergic rhinitis and asthma]. / MASK (Mobile Airways Sentinel Network). La solución integral de ARIA por app móvil para la multimorbilidad de rinitis alérgica y asma.

The vast majority of patients with allergic rhinitis (AR) do not receive the proper management which is recommended by the guidelines, but they frequently self-medicate. MASK (Mobile Airways Sentinel Network) is an integral part of a project that is supported by the European Union against chronic diseases and focused on active and healthy aging. MASK represents the third phase of ARIA (Allergic Rhinitis and its Impact on Asthma), in which, by using a mobile application in a smart device, the objective is to guide the patient in the control of his/her multi-morbidity, AR and/or allergic conjunctivitis (AC) and/or asthma. The mobile app Allergy Diary by MACVIA-ARIA is free and it is available for both Android and iOS platforms. After it is downloaded to the patient's cell phone, it first requests some information about the patient's profile, allergic pathologies and medication; afterwards, through a visual analog scale, the patient is invited to determine the degree of affectation in the nose, eyes, and bronchi, and its influence on their productivity at work / school. After analyzing the data generated by filling the Allergy Diary, it became clear there is a new clinical entity: allergic rhinitis+ allergic conjunctivitis +asthma, with greater effect; in addition to a high level of self-medication: in general, the patient takes medication on days when symptoms are present. The app has already been deployed in 23 countries, including several Spanish-speaking countries.

La mayoría de los pacientes con rinitis alérgica no recibe el manejo idóneo, sino que se automedica. MASK (Mobile Airways Sentinel Network) forma parte integral de un proyecto apoyado por la Unión Europea contra las enfermedades crónicas y enfocado al envejecimiento activo y saludable. Constituye la tercera fase de ARIA (Allergic Rhinitis and its Impact on Asthma), en la cual mediante una aplicación móvil en un dispositivo inteligente se intenta guiar al paciente en el control de su multimorbilidad, rinitis o conjuntivitis alérgicas o asma. La aplicación Diario de Alergia por MACVIA-ARIA es gratuita y está disponible para Android e iOS. Al descargarla al celular del paciente, a este se le piden datos de su perfil, patologías alérgicas y medicación; posteriormente, mediante una escala visual analógica se le invita a determinar el grado de afectación en nariz, ojos y bronquios y su influencia sobre su productividad laboral/escolar. Con los datos del Diario de Alergia se observa que existe un nuevo patrón de presentación: rinitis alérgica + conjuntivitis alérgica + asma, con mayor afectación, así como un alto nivel de automedicación: en general, el paciente toma medicación cuando presenta síntomas. La app se ha desplegado en 23 países, incluyendo varios países hispanohablantes.