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Traditional medicine in Latin America and mainly in Mexico represents an essential alternative for treating different diseases. The use of plants as medicine is the product of a rich cultural tradition of the indigenous peoples, in which a great variety of species are used for the treatment of gastrointestinal, respiratory, and mental diseases and some other sicknesses; the therapeutic efficacy that they possess is due to the properties that derive from the active ingredients of plants principally antioxidants, such as phenolic compounds, flavonoids, terpenes, and tannins. An antioxidant is a substance that, at low concentrations, delays or prevents substrate oxidation through the exchange of electrons. Different methods are used to determine the antioxidant activity and the most commonly used are described in the review. Cancer is a disease in which some cells multiply uncontrollably and spread to other parts of the body, a process known as metastasis. These cells can lead to the formation of tumors, which are lumps of tissue that can be cancerous (malignant) or noncancerous (benign). Generally, the treatment of this disease consists of surgery, radiotherapy, or chemotherapy, which have side effects that decrease the quality of life of patients, so new treatments, focusing on natural resources such as plants, can be developed. This review aims to gather scientific evidence on the antioxidant compounds present in plants used in traditional Mexican medicine, specifically as antitumor treatment in the most common cancer types worldwide (e.g., breast, liver, and colorectal cancer).

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Fleas and ticks represent the two main groups of ectoparasites that infest companion animals. In particular, the flea Ctenocephalides felis felis and several members of the Rhipicephalus sanguineus complex are the main vectors of a wide range of pathogens on the American continent. They are competent vectors for several members of the genus Rickettsia, which encompass at least 15 pathogenic obligate intracellular bacteria that colonize the endothelial cells of vertebrates. In Mexico, 10 species of Rickettsia belonging to three groups have been detected in six species of ectoparasites from dogs in 9 of the 32 states of the country. However, in some larger regions of the country, active epidemiological surveillance has not been carried out. For this reason, the aim of this study was to identify the presence of members of the genus Rickettsia in fleas and ticks of dogs and cats in the state of Puebla, Mexico. A cross-sectional study was carried out to collect ectoparasites of dogs and cats during August to November 2019. Samples were fixed in 70% ethanol and examined to identify the presence of Rickettsia DNA by the amplification and sequencing of specific fragments of the gltA and ompB genes using conventional PCR. The recovered sequences were compared with those deposited in GenBank, and phylogenetic analyses were carried out to identify the position of the pathogens detected with respect to the valid species previously reported worldwide. Additionally, ecological parameters of the ectoparasite infestations were also calculated. We recovered 196 ectoparasites belonging to two species, 33 C. felis felis and 163 R. sanguineus s.l. (Rhipicephalus linnaei), parasitizing 46 hosts (42 dogs and 4 cats) in 11 localities of the state of Puebla. We detected the presence of Rickettsia felis in three pools of C. felis felis, and five from R. sanguineus s.l. Our work provides the first record of R. felis in hard ticks of Mexico and Central America, with new collection localities for this pathogen in central Mexico.

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The SiO2 particles system is one of the most common ways to protect colloidal metal systems, such as gold nanoparticles, from aggregation and activity loss due to their high chemical stability and low reactivity. In this study, silica green gold nanoparticles (AuNPs synthesized with mullein extract) were fabricated using two different sol-gel methods. The nanoparticles were characterized by Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), Fourier Transformed Infrared (FTIR), and the antibacterial activity against pathogens (Staphylococcus aureus, Listeria monocytogenes, Escherichia coli, and Salmonella enterica). Synthesis-1 nanoparticles had a kidney-shaped form and uniform distribution, while synthesis-2 nanoparticles had a spherical and non-uniform form. Characterization showed that temperature is an important factor in the distribution of AuNPs in silica; a decrease allowed the formation of Janus-type, and an increase showed a higher concentration of gold in energy-dispersive spectroscopy (EDS) analysis. Overall, similar bands of the two synthesis silica nanoparticles were observed in FTIR, while XRD spectra showed differences in the preferential growth in AuNPs depending on the synthesis. Higher antibacterial activity was observed against S. aureus, which was followed by L. monocytogenes. No differences were observed in the antibacterial activity between the two different sol-gel methods.

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Gold nanoparticles (AuNPs) are promising nanomaterials exhibiting anti-cancer effects. Green AuNPs synthesis using plant extracts can be used to achieve stable and beneficial nanoparticles due to their content of bioactive compounds. This research aimed to synthesize and evaluate the antiproliferative and caspase-3 activity induction of green AuNPs synthesized with common mullein (V. thapsus) flowers (AuNPsME) and castor bean (R. communis) leaves (AuNPsCE) ethanolic extracts in human HT29 and SW480 colorectal cancer cells. Their effect was compared with chemically synthesized AuNPs (AuNPsCS). The extracts mainly contained p-coumaric acid (71.88-79.93 µg/g), ferulic acid (19.07-310.71 µg/g), and rutin (8.14-13.31 µg/g). The obtained nanoparticles presented typical FT-IR bands confirming the inclusion of polyphenols from V. thapsus and R. communis and spherical/quasi-spherical morphologies with diameters in the 20.06-37.14 nm range. The nanoparticles (20-200 µg/mL) showed antiproliferative effects in both cell lines, with AuNPsCE being the most potent (IC50 HT29: 110.10 and IC50SW480: 64.57 µg/mL). The AuNPsCS showed the lowest intracellular reactive oxygen species (ROS) generation in SW480 cells. All treatments induced caspase 3/7 activity to a similar or greater extent than 30 mM H2O2-treated cells. Results indicated the suitability of V. thapsus and R. communis extracts to synthesize AuNPs, displaying a stronger antiproliferative effect than AuNPsCS.

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Background: The effects of diabetes on the cardiovascular system as well as in the kidney are profound, which include hypertrophy and fibrosis. Diabetes also induces oxidative stress, at least in part due to the uncoupling of nitric oxide synthase (NOS); this is a shift in NO production toward superoxide production due to reduced levels of the NOS cofactor tetrahydrobiopterin (BH4). With this in mind, we tested the hypothesis that BH4 supplementation may prevent the development of diabetic cardiomyopathy and nephropathy. Methods: Diabetes was induced in Balb/c mice with streptozotocin. Then, diabetic mice were divided into two groups: one group provided with BH4 (sapropterin) in drinking water (daily doses of 15 mg/kg/day, during eight weeks) and the other that received only water. A third group of normoglycemic mice that received only water were used as the control. Results: Cardiac levels of BH4 were increased in mice treated with BH4 (p = 0.0019). Diabetes induced cardiac hypertrophy, which was prevented in the group that received BH4 (p < 0.05). In addition, hypertrophy was evaluated as cardiomyocyte cross-sectional area. This was reduced in diabetic mice that received BH4 (p = 0.0012). Diabetes induced cardiac interstitial fibrosis that was reduced in mice that received BH4 treatment (p < 0.05). We also evaluated in the kidney the impact of BH4 treatment on glomerular morphology. Diabetes induced glomerular hypertrophy compared with normoglycemic mice and was prevented by BH4 treatment. In addition, diabetic mice presented glomerular fibrosis, which was prevented in mice that received BH4. Conclusions: These results suggest that chronic treatment with BH4 in mice ameliorates the cardiorenal effects of diabetes,, probably by restoring the nitroso−redox balance. This offers a possible new alternative to explore a BH4-based treatment for the organ damage caused by diabetes.

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Prions are proteins that cause fatal neurodegenerative diseases. The misfolded conformation adopted by prions can be transmitted to other normally folded proteins. Therapeutics to stop prion proliferation have been studied experimentally; however, it is not clear how the combination of different types of treatments can decrease the growth rate of prions in the brain. In this article, we combine the implementation of pharmacological chaperones and interferons to develop a novel model using a non-linear system of ordinary differential equations and study the quantitative effects of these two treatments on the growth rate of prions. This study aims to identify how the two treatments affect prion proliferation, both individually and in tandem. We analyze the model, and qualitative global results on the disease-free and disease equilibria are proved analytically. Numerical simulations, using parameter values from in vivo experiments that provide a pharmaceutically important demonstration of the effects of these two treatments, are presented here. This mathematical model can be used to identify and optimize the best combination of the treatments within their safe ranges.

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Lyme disease is one of the most prevalent and fastest growing vector-borne bacterial illnesses in the United States, with over 25,000 new confirmed cases every year. Humans contract the bacterium Borrelia burgdorferi through the bite of the tick Ixodes scapularis. The tick can receive the bacterium from a variety of small mammal and bird species, but the white-footed mouse Peromyscus leucopus is the primary reservoir in the northeastern United States, especially near human settlement. The tick's life cycle and behavior depend greatly on the season, with different stages of tick biting at different times. Reducing the infection in the tick-mouse cycle may greatly lower human Lyme incidence in some areas. However, research on the effects of various mouse-targeted interventions is limited. One particularly promising method involves administering vaccine pellets to white-footed mice through special bait boxes. In this study, we develop and analyze a mathematical model consisting of a system of nonlinear difference equations to understand the complex transmission dynamics and vector demographics in both tick and mice populations. We evaluate to what extent vaccination of white-footed mice can affect Lyme incidence in I. scapularis, and under which conditions this method saves money in preventing Lyme disease. We find that, in areas with high human risk, vaccination can eliminate mouse-tick transmission of B. burgdorferi while saving money.

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RESUMEN Introducción . El espectro de placenta acreta (EPA) se refiere a la gama de adherencias patológicas de la placenta al útero. Es considerado un problema de salud pública debido a su notable aumento en las últimas décadas y su asociación a morbimortalidad materna significativa, con riesgo elevado de hemorragia, transfusiones e histerectomía obstétrica. Objetivo . Conocer las características epidemiológicas, quirúrgicas y posquirúrgicas de las pacientes con espectro de placenta acreta. Métodos . Estudio descriptivo, retrospectivo de pacientes con espectro de placenta acreta atendidas en el Hospital San Bartolomé entre 2014 y 2018. Resultados . Se identificaron 36 casos de EPA con una tasa de 1,2/1 000 nacimientos. El 94% era multípara, 81% tuvo cirugía uterina previa, 61% tenía 35 o más años de edad y 47% poseía placenta previa, siendo la cesárea el antecedente quirúrgico uterino más frecuente con 72%. Se recurrió a procedimientos conservadores en 53% y a histerectomía en 47%. Hubo 53% de complicaciones postoperatorias, sin muerte materna. Conclusiones . En el presente estudio se halló que el espectro de placenta acreta estuvo significativamente asociado con la cesárea previa. Si bien hubo un número significativo de casos que se presentaron con hemorragia y choque hipovolémico, las intervenciones quirúrgicas oportunas y un banco de sangre bien provisto evitaron las muertes maternas. El manejo conservador del acretismo focal se mostró como alternativa válida para evitar la histerectomía y sus complicaciones.

ABSTRACT Introduction : Placenta accreta spectrum (PAS) refers to pathological adhesions of the placenta to the uterus. It is considered a public health problem due to its increase in recent decades, and it is associated with significant maternal morbidity and mortality and high risk of hemorrhage, blood transfusions and hysterectomy. Objective : To determine the epidemiological, surgical and post-surgical characteristics of patients with placenta accreta. Methods: Descriptive, retrospective study of patients with placenta accreta spectrum attended at San Bartolomé Hospital, Lima, Peru, between 2014 and 2018. Results : Thirty-six PAS cases were documented with a birth rate of 1.2/1 000; 94% occurred in multiparous women, 81% had previous uterine surgery including 26 (72%) with previous cesarean section; 61% were 35 years old or older, and 47% had placenta previa. Treatment was conservative in 53% of the cases, while hysterectomy was performed in 47%. There were post-surgical complications in 53%, without maternal deaths. Conclusions : In our study, placenta accreta spectrum was predominantly associated with previous cesarean sections. A considerable number of cases presented hemorrhage and hypovolemic shock. Timely surgical intervention and a well-supplied blood bank allowed conservative management in focal accretism as a valid alternative to hysterectomy and its complications.

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RESUMEN Introducción . El síndrome HELLP está caracterizado por hemólisis, enzimas hepáticas elevadas y plaquetopenia. Es una de las complicaciones maternas más graves del embarazo, con cifras significativas de morbimortalidad materna y riesgo elevado de insuficiencia renal, hematoma hepático, coagulopatía intravascular diseminada, politransfusión. Objetivos . Describir la presentación clínica, diagnóstico, complicaciones y manejo de los casos con síndrome HELLP en un hospital peruano. Métodos . Estudio descriptivo, retrospectivo de los casos diagnosticados con síndrome de HELLP en un hospital peruano. Resultados . En 30 618 partos atendidos, se encontró 71 casos de síndrome HELLP, con incidencia de 0,23%. Fueron multíparas el 68%, con edad promedio de 33 años. El diagnóstico se confirmó durante el embarazo en 46% y en el puerperio en 54%. De las gestantes, 58% desarrolló síndrome HELLP antes de las 37 semanas. La morbilidad materna incluyó insuficiencia renal en 25%, hematoma hepático con o sin rotura en 11%, insuficiencia respiratoria en 7%, eclampsia en 6%. El 85% de las pacientes requirió transfusiones con hemoderivados y/o plaquetas. La mortalidad materna fue 3%. Conclusiones . En la población estudiada, el síndrome HELLP se presentó con morbilidad materna elevada. Las muertes se asociaron a hematoma hepático y eclampsia.

ABSTRACT Introduction : HELLP syndrome is characterized by hemolysis, elevated liver enzymes, and thrombocytopenia; it is one of the most serious maternal complications of pregnancy, with significant morbidity and mortality, and high risk of renal failure, hepatic hematoma, disseminated intravascular coagulopathy and receiving multiple blood transfusions. Objective : To describe the clinical presentation, diagnosis, complications and management of patients with HELLP syndrome in a Peruvian hospital. Method : Descriptive, retrospective study of cases with HELLP syndrome at a Peruvian hospital. Results : Out of 30 618 deliveries, 71 cases of HELLP syndrome were found, with an incidence of 0.23%; 68% of cases were multiparous, with an average age of 33. Diagnosis was confirmed during pregnancy in 46% (58% of them developed HELLP syndrome before 37 weeks of gestation) and in the puerperium in 54%. Maternal morbidity included renal failure in 25%, hepatic hematoma with or without rupture in 11%, respiratory failure in 7%, eclampsia in 6%; patients required platelets or blood products transfusions in 85% of cases. Maternal mortality was 3%. Conclusions : In the population studied, HELLP syndrome was associated with high maternal morbidity. Maternal death was mainly due to liver hematoma or eclampsia.

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RESUMEN La enfermedad renal crónica (ERC) se observa en aproximadamente el 4% de las mujeres en edad fértil, pero el embarazo suele ser infrecuente en este grupo de pacientes, principalmente en aquellas con enfermedad renal crónica terminal (ERCT), reportándose entre el 1% al 7%. Los efectos de la enfermedad renal y su tratamiento pueden, a su vez, afectar el embarazo, incluido el desarrollo del feto, teniendo alta frecuencia las complicaciones perinatales. Es una patología que durante la gestación tiene una alta morbimortalidad para el binomio, por lo cual la cooperación interdisciplinaria intensiva de nefrólogos y obstetras es imprescindible para el manejo exitoso de la embarazada en esta condición. Se presenta el caso de una paciente con diagnóstico de ERCT antes de la concepción, manejo de su patología y seguimiento hasta la finalización del embarazo.

SUMMARY Introduction and objectives: The climacteric symptoms together with genital prolapse in the aging woman, affects the sexual function and the health related quality of life. The objective of this study was to describe sexual function and health related quality of life in climacteric women with genital prolapse according to sociodemographic and clinical characteristics. Methods: Descriptive cross-sectional design, on a consecutive sample of 45 climacteric women enrolled in two Family Health Centers of the Ñuble region, were selected all those between 42 and 60 years of age, with a clinical or ultrasound diagnosis of genital prolapse, with active sexual life the last 6 months and without hormone replacement therapy. To evaluate sexual function the Index of Feminine Sexual Function was applied and for the health related quality of life the Menopause Rating Scale was applied. Descriptive statistics were used, and to analyze the difference between the variables, the Chi-square and Fisher's Exact test were applied. In all cases a level of significance was considered p <0.05. The data was analyzed with the statistical software SPSS v. 23. Results: A statistically significant difference was observed between schooling and sexual function (p = 0.005) and type of delivery and health related quality of life (p = 0.034). Conclusions: The educational level could be considered as a protective factor of sexual function.

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Nisin-loaded amaranth protein isolate:pullulan (API:PUL) nanofibers were prepared by the electrospinning method. The nisin release kinetic was evaluated at pH 3.4 and 6.1 and the antimicrobial effectiveness of the electrospun mats was evaluated in apple juice and fresh cheese. The nisin API:PUL fibers with 120 nm average diameter reached 81.49% and 43.85% nisin release after 12 h at pH 3.4 and 6.1, respectively. The encapsulation of nisin in electrospun fibers allowed complete bactericidal activity against Salmonella Typhimurium, L. monocytogenes and L. mesenteroides inoculated in apple juice after 48, 20 and 48 h, respectively. When nisin API:PUL fibers were applied to fresh cheese, microorganism inactivation was complete after 142, 120 and 170 h, respectively. The results demonstrated that nisin API:PUL electrospun fibers significantly reduce the bacterial population and can be used in food products for microbiological safety.

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Objetivos: analisar a associação entre a auto percepção e a necessidade clínica de tratamento ortodôntico e investigar a relação entre a necessidade de tratamento ortodôntico e o impacto nas atividades diárias comer, sorrir e falar, em adolescentes. Sujeitos e método: estudo transversal com 1.630 escolares com idade entre 15 e 19 anos, de 36 municípios do estado do Rio Grande do Sul. Os instrumentos utilizados para determinar a necessidade de tratamento ortodôntico foram o Índice de Estética Dental (DAI) e o Componente Estético (AC) do Índice de Necessidade de Tratamento Ortodôntico (IOTN). Os dados foram analisados com o programa SPSS 21.0, utilizando-se os testes Qui-Quadrado de Pearson ou Qui-Quadrado de tendência linear e a regressão de Poisson. O nível de significância adotado foi de 5%. Resultados: observou-se associação positiva entre o IOTN e o DAI. A proporção de sujeitos que perceberam a necessidade de tratamento ortodôntico aumentou com a recomendação feita pelo dentista. Entretanto, a maioria dos adolescentes entrevistados não percebia necessidade de tratamento ortodôntico. Após o ajuste, observou-se associação entre a maloclusão e o desempenho da atividade diária sorrir (RP = 2,03) e o sexo dos escolares (RP = 1,28). Também se observou associação entre o sexo dos adolescentes (RP = 1,23), a escolaridade do pai (RP = 1,21) e o impacto na atividade comer. A atividade diária de falar estava associada com a escolaridade do pai (RP = 2,11). Conclusão: existe associação entre a auto percepção de tratamento ortodôntico e a necessidade clínica. A maloclusão impacta a atividade sorrir entre os adolescentes, entretanto, o mesmo não ocorre com as atividades comer e falar. (AU)

Objective: to analyze the association between self- -perception and clinical need for orthodontic treatment, and to investigate the relationship between the need for orthodontic treatment and the impact on daily activities of eating, smiling, and speaking, in adolescents. Subjects and method: cross-sectional study with 1630 school children aged 15 through 19 years from 36 cities of the state of Rio Grande do Sul, Brazil. The instruments used to determine the need for orthodontic treatment were the Dental Aesthetic Index (DAI) and the Aesthetic Component (AC) of the Index of Orthodontic Treatment Need (IOTN). The data were analyzed with the SPSS 21.0 software using Pearson's chi-square or linear trend chi-square tests and Poisson regression. The significance level was 5%. Results: there was a positive association between IOTN and DAI. The proportion of subjects who perceived the need for orthodontic treatment increased with the recommendation from the dentist. However, most of the adolescents interviewed did not perceive the need for orthodontic treatment. After adjustment, there was an association of malocclusion with the performance of the daily activity of smiling (PR = 2.03) and the gender of school children (PR = 1.28). An association was also observed for the gender of adolescents (PR = 1.23) and paternal level of education (PR = 1.21) with the daily activity of eating. The daily activity of speaking was associated with the paternal level of education (PR = 2.11). Conclusion: there is an association between self-perception of orthodontic treatment and the clinical need. Malocclusion affects the activity of smiling among adolescents, but the same does not occur with the activities of eating and speaking. (AU)

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Zika virus (ZIKV) is a vector-borne disease that has rapidly spread during the year 2016 in more than 50 countries around the world. If a woman is infected during pregnancy, the virus can cause severe birth defects and brain damage in their babies. The virus can be transmitted through the bites of infected mosquitoes as well as through direct contact from human to human (e.g., sexual contact and blood transfusions). As an intervention for controlling the spread of the disease, we study a vaccination model for preventing Zika infections. Although there is no formal vaccine for ZIKV, The National Institute of Allergy and Infectious Diseases (part of the National Institutes of Health) has launched a vaccine trial at the beginning of August 2016 to control ZIKV transmission, patients who received the vaccine are expected to return within 44 weeks to determine if the vaccine is safe. Since it is important to understand ZIKV dynamics under vaccination, we formulate a vaccination model for ZIKV spread that includes mosquito as well as sexual transmission. We calculate the basic reproduction number of the model to analyze the impact of relatively, perfect and imperfect vaccination rates. We illustrate several numerical examples of the vaccination model proposed as well as the impact of the basic reproduction numbers of vector and sexual transmission and the effect of vaccination effort on ZIKV spread. Results show that high levels of sexual transmission create larger cases of infection associated with the peak of infected humans arising in a shorter period of time, even when a vaccine is available in the population. However, a high level of transmission of Zika from vectors to humans compared with sexual transmission represents that ZIKV will take longer to invade the population providing a window of opportunities to control its spread, for instance, through vaccination.

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We create and analyze a mathematical model to estimate the impact of condom-use and sexual behavior on the prevalence and spread of Sexually Transmitted Infections (STIs). STIs remain a significant public health challenge globally with a high burden of some Sexually Transmitted Diseases (STDs) in both developed and undeveloped countries. Although condom-use is known to reduce the transmission of STIs, there are a few quantitated population-based studies on the protective role of condom-use in reducing the incidence of STIs. The number of concurrent partners is correlated with their risk of being infectious by a STI such as chlamydia, gonorrhea, or syphilis. We define a Susceptible-Infectious-Susceptible (SIS) model that distributes the population by the number of concurrent partners. The model captures the multi-level heterogeneous mixing through a combination of biased (preferential) and random mixing between individuals with different risks, and accounts for differences in condom-use in the low- and high-risk populations. We use sensitivity analysis to assess the relative impact of high-risk people using condom as a prophylactic to reduce their chance of being infectious, or infecting others. The model predicts the STI prevalence as a function of the number of partners that a person has, and quantifies how this distribution changes as a function of condom-use. Our results show that when the mixing is random, then increasing the condom-use in the high-risk population is more effective in reducing the prevalence than when many of the partners of high-risk people have high risk. The model quantified how the risk of being infected increases for people who have more partners, and and the need for high-risk people to consistently use condoms to reduce their risk of infection.

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Most of antimicrobial peptides interact with food components decreasing their activity, which limit their successful incorporation into packaging material, functional foods and edible films. The aim of this work was to develop a nisin carrier. Nanofibers of amaranth protein and pullulan (50:50) loaded with nisin were obtained by electrospinning. The nanofibers morphology was determined by scanning electron microscopy and fluorescent microscopy. The molecular interactions were characterized by infrared spectroscopy, X-ray diffraction, differential scanning calorimetry, and thermogravimetric analysis. The nisin loading efficiency as well as the antimicrobial activity against Leuconostoc mesenteroides were evaluated. The micrographs of the obtained materials exhibited smooth and continuous fibers with no defects characterized by diameters between 124 and 173 nm. The FTIR analysis showed intermolecular interactions mainly by hydrogen bonding. The electrospinning process improved the thermal properties of the polymeric mixture displacing the Tm peak to higher temperatures and increasing crystallinity. The antimicrobial activity of nisin in broth and agar against L. mesenteroides was maintained after incorporation into fibers. The results presented an outlook for the potential use of protein amaranth nanofibers when incorporating antimicrobials as a food preservation strategy.

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Natural food antimicrobials are bioactive compounds that inhibit the growth of microorganisms involved in food spoilage or food-borne illness. However, stability issues result in degradation and loss of antimicrobial activity. Nanoencapsulation allows protection of antimicrobial food agents from unfavorable environmental conditions and incompatibilities. Encapsulation of food antimicrobials control delivery increasing the concentration of the antimicrobials in specific areas and the improvement of passive cellular absorption mechanisms resulted in higher antimicrobial activity. This paper reviews the present state of the art of the nanostructures used as food antimicrobial carriers including nanoemulsions, nanoliposomes, nanoparticles, and nanofibers.

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Introducción: Se ha relacionado la depresión con la ocurrencia de enfermedades cardiovasculares. Parece incrementar el riesgo de muerte en enfermedad coronaria. La presencia de depresión tras un síndrome coronario agudo (SCA) y su relación con factores socioeconómicos no se ha estudiado en Colombia. Objetivo: Describir la frecuencia de depresión y sus factores asociados en pacientes hospitalizados por SCA. Métodos: Entre abril y mayo de 2008, se llevó a cabo un estudio de corte transversal en tres unidades de cuidado coronario en Santa Marta, Colombia. La presencia de síntomas depresivos se evaluó con el Inventario de Depresión de Beck (BDI). Se consideró depresión si el BDI era ≥ 10. Se probó la relación entre la presencia de depresión y características demográficas, clínicas y paraclínicas. Resultados: Se encontró un BDI ≥ 10 (algún grado de depresión) en 21 (63,64%) pacientes; 9 de 10 (91,66%) pacientes sin ingresos fijos presentaron depresión, frente a 12 de 23 (57,14%) con ingresos fijos (p = 0,037). En 8 de 8 (100%) pacientes con inversión patológica de la onda T en el electrocardiograma, se evidenció depresión, frente a 13 de 25 (52%) sin cambios en la onda T (p = 0,014); 17 de 22 (77,27%) pacientes que tenían consumo previo de cigarrillos presentaron depresión, frente a 4 de 11 (36,36%) que nunca habían consumido cigarrillos (p = 0,021). Conclusiones: Los síntomas depresivos son altamente prevalentes entre los pacientes que sufren un SCA. El desempleo, la inversión patológica de la onda T y el consumo de cigarrillos parecen estar asociados con la presencia de síntomas depresivos tras un evento coronario agudo.

Background: Depression has been related to the occurrence of cardiovascular diseases, and also appears to increase the risk of death from coronary artery disease. The presence of depression after the occurrence of an acute coronary syndrome (ACS) and its relationship with socioeconomic factors has not been studied in Colombia. Objective: To describe the frequency of depression and associated factors in patients hospitalized with an ACS. Methods: A cross-sectional study was carried out between April and May 2008 in three coronary care units in Santa Marta, Colombia. The presence of depression was evaluated with the Beck Depression Inventory (BDI). Depression was considered to be present if BDI was equal or greater than 10. The relationship between the presence of depression and demographic, clinic and laboratory characteristics was analyzed. Results: A BDI score ≥10 (any degree of depression) was seen in 21 (63.64%) of the patients. In 9 out of 10 (91.66%) patients without stable income had depression in contrast to 12 out of 23 (57.14%) with stable income (P=.037). Depression was found in in 8 of the 8 (100%) patients with electrocardiographic pathological T wave inversion, in contrast to 13 out of the 25 (52%) without changes in T wave (P=.014). Depression was detected in 17 of 22 (77.27%) patients who smoked cigarettes versus 4 of 11 (36.36%) of patients who have never smoked (P=.021). Conclusions: Depressive symptoms are significantly present in patients suffering an acute coronary syndrome. Unemployment, pathological T wave inversion, and smoking seem to be associated with the presence of depressive symptoms after an acute coronary event.

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BACKGROUND: Depression has been related to the occurrence of cardiovascular diseases, and also appears to increase the risk of death from coronary artery disease. The presence of depression after the occurrence of an acute coronary syndrome (ACS) and its relationship with socioeconomic factors has not been studied in Colombia. OBJECTIVE: To describe the frequency of depression and associated factors in patients hospitalized with an ACS. METHODS: A cross-sectional study was carried out between April and May 2008 in three coronary care units in Santa Marta, Colombia. The presence of depression was evaluated with the Beck Depression Inventory (BDI). Depression was considered to be present if BDI was equal or greater than 10. The relationship between the presence of depression and demographic, clinic and laboratory characteristics was analyzed. RESULTS: A BDI score ≥10 (any degree of depression) was seen in 21 (63.64%) of the patients. In 9 out of 10 (91.66%) patients without stable income had depression in contrast to 12 out of 23 (57.14%) with stable income (P=.037). Depression was found in in 8 of the 8 (100%) patients with electrocardiographic pathological T wave inversion, in contrast to 13 out of the 25 (52%) without changes in T wave (P=.014). Depression was detected in 17 of 22 (77.27%) patients who smoked cigarettes versus 4 of 11 (36.36%) of patients who have never smoked (P=.021). CONCLUSIONS: Depressive symptoms are significantly present in patients suffering an acute coronary syndrome. Unemployment, pathological T wave inversion, and smoking seem to be associated with the presence of depressive symptoms after an acute coronary event.