Effect of Insulin Resistance on Abdominal Obesity, Liver Fat Infiltration, and Body Mass Index in Youngsters.

AIM: Evaluate insulin resistance (IR) as a mediator of the effect of body fat distribution on liver fat infiltration and stiffness (LSt) in young adults using structural equation modeling (SEM). METHODS: We invited 500 first year students from two universities and evaluated their family history to determine the risk for cardiometabolic disease. Of these, 174 students (age 19 ± 1 years) were assessed for total body fat percentage (BF%), LSt, fat infiltration (Coefficient attenuated parameter CAP), and serum biochemical analysis. We performed a mediation analysis using two different structural equation models to determine the relationship between BMI, BF%, abdominal obesity (AO), IR, LSt, and fat infiltration using standardized ß coefficients. The symbol "->" means "explains/causes". RESULTS: Model#1 supported that mediation analysis and had a better fit than the direct effect. AO->IR (b = 0.62, p = 0.005), AO->CAP (b = 0.63, p <0.001), and CAP->IR (b = 0.23, p = 0.007), with negligible effect of BMI on CAP and IR. Model#2 showed direct effect of BMI on LSt was a better fit than mediation. BMI->LSt (b = 0.17, p = 0.05) but no effect AO->LSt. Interestingly, LSt->IR (b = 0.18, p = 0.001), but bi-directional IR->LSt (b = 0.23, p = 0.001). CONCLUSIONS: AO and BMI in young adults have differential phenotypic effects on liver CAP and LSt. Visceral fat had a direct effect on IR and CAP. Meanwhile, BMI was associated with LSt. Our findings shed light on the complex interplay of factors influencing liver stiffness, particularly in young individuals. Further research is needed to elucidate the precise mechanisms underlying these associations and their implications for liver health.

Reverse transcription loop­mediated isothermal amplification has a high performance in the detection of SARS­CoV­2 in saliva samples and nasal swabs from asymptomatic and symptomatic individuals.

The detection of coronavirus disease 2019 cases represents a significant challenge at the epidemiological level. Limitations exist in effectively detecting asymptomatic cases, achieving good follow-up in hospitals without the infrastructure for reverse transcription-quantitative PCR (RT-qPCR) or in difficult-to-access areas and developing methods with the need for less invasive sampling procedures. Therefore, the present study evaluated the performance of the direct reverse transcription loop-mediated isothermal amplification (RT-LAMP) test for detecting severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the saliva and nasal samples of asymptomatic individuals belonging to the university population. In addition, this test was also assessed for effectiveness in symptomatic individuals referred from a hospital with poor infrastructure in molecular biology and located outside the urban area. The RT-LAMP assay was compared with the results obtained from the RT-qPCR nasopharyngeal swab test, where the diagnosis was confirmed by lateral flow immunoassay test for rapid antigen detection. A total of 128 samples were analyzed, of which 43% were symptomatic positive individuals, 25% were asymptomatic positive individuals and 32% were SARS-CoV2-negative control individuals. Among positive individuals, no differences were found between the Cq values determined by RT-qPCR. A sensitivity of 96.5% and a specificity of 97.6% was reported for the detection of SARS-CoV-2 in symptomatic individuals by salivary and nasal RT-LAMP, as well as a sensitivity of 100% and a specificity of 97.6% for the detection of SARS-CoV-2 in asymptomatic individuals. These findings indicated that performance of the direct RT-LAMP test using saliva and nasal samples has high sensitivity and specificity, which in turn suggest that it is a viable and reliable alternative for use in epidemiological monitoring.

Empowering Elementary and Middle School Youth to Speak Up and Be Safe: Advancing Prevention of Child Maltreatment with a Universal School-Based Curriculum.

Child maltreatment is a global public health problem, and school-based universal prevention programs such as the Speak Up Be Safe (SUBS) curriculum can be an effective solution to help address child violence. This randomized control study employed a pre-, post-, and six-month follow-up design for students in kindergarten to grade 8, approximately ages 5-13 (n = 2797). Surveys measured the efficacy of the curriculum in increasing students' knowledge of safety rules and self-protection strategies. The analyses explored the differences at follow-up between the conditions for each index/scale for each grade using an analysis of covariance, which controlled for the pre-survey scores. The SUBS group had significantly higher scores at follow-up than the students in the control group. This study showed that the students learned new knowledge and skills to act upon and identify child abuse and neglect in keeping themselves and others safe. Policy- and decision makers now know that as a child maltreatment prevention program, SUBS can be implemented universally in schools at a low cost, delivering an essential evidence-based safety curriculum that protects students from child maltreatment.

The power of local research to inform adverse childhood experiences in substance use prevention in adolescents and adults.

BACKGROUND: The impact of adverse childhood experiences on substance use has been well reported, however, less well documented is looking at the comparison of youth and adult substance use and their respective adverse childhood experiences. This study leveraged local data sources to support prevention efforts inside a state-level working group and examined research questions that explored the relationship between reported adverse childhood experiences and substance use for youth and adult samples at the state level. METHODS: This study conducted a series of logistic regression models (95% CI) between substance use outcomes with different age group populations to investigate the relationship between adverse childhood experiences and substance use for each group. Adverse childhood experiences scores and substance use were examined using two Arizona datasets: 1) Arizona Youth Survey (n = 42,009) and 2) the Behavioral Risk Factor Surveillance System (n = 5328). RESULTS: The results of youth and adult datasets were consistent: users with adverse childhood experiences scores of 4 to 6 had a positive association with more substance use. When the variables were examined, showing the entire sample of youth and adult groups compared to those subgroups with a score of zero, a score of 1 to 3, and a score of 4 to 6, the overall pattern was the same; the more frequent use of substances was directly associated to the group with higher scores. Additionally, findings support increased attention on prevention and intervention efforts with higher reports of adverse childhood experiences as well as substance use. CONCLUSIONS: These findings demonstrate how local research can help prioritize prevention resources and increase the value of data-based decision-making. Policy-makers and providers can examine youth and adult data to compare priorities and assess for planning purposes. Specifically, it is possible to replicate known research findings, identify the most impacted subpopulations, and forecast the community's future needs.

HeberNasvac, a Therapeutic Vaccine for Chronic Hepatitis B, Stimulates Local and Systemic Markers of Innate Immunity: Potential Use in SARS-CoV-2 Postexposure Prophylaxis.

INTRODUCTION: More than 180 million people have been infected by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and more than 4 million coronavirus disease-2019 (COVID-19) patients have died in 1.5 years of the pandemic. A novel therapeutic vaccine (NASVAC) has shown to be safe and to have immunomodulating and antiviral properties against chronic hepatitis B (CHB). MATERIALS AND METHODS: A phase I/II, open-label controlled and randomized clinical trial of NASVAC as a postexposure prophylaxis treatment was designed with the primary aim of assessing the local and systemic immunomodulatory effect of NASVAC in a cohort of suspected and SARS-CoV-2 risk-contact patients. A total of 46 patients, of both sexes, 60 years or older, presenting with symptoms of COVID-19 were enrolled in the study. Patients received NASVAC (100 µg per Ag per dose) via intranasal at days 1, 7, and 14 and sublingual, daily for 14 days. RESULTS AND DISCUSSION: The present study detected an increased expression of toll-like receptors (TLR)-related genes in nasopharyngeal tonsils, a relevant property considering these are surrogate markers of SARS protection in the mice model of lethal infection. The HLA-class II increased their expression in peripheral blood mononuclear cell's (PBMC's) monocytes and lymphocytes, which is an attractive property taking into account the functional impairment of innate immune cells from the periphery of COVID-19-infected subjects. NASVAC was safe and well tolerated by the patients with acute respiratory infections and evidenced a preliminary reduction in the number of days with symptoms that needs to be confirmed in larger studies. CONCLUSIONS: Our data justify the use of NASVAC as preemptive therapy or pre-/postexposure prophylaxis of SARS-CoV-2 and acute respiratory infections in general. The use of NASVAC or their active principles has potential as immunomodulatory prophylactic therapies in other antiviral settings like dengue as well as in malignancies like hepatocellular carcinoma where these markers have shown relation to disease progression. HOW TO CITE THIS ARTICLE: Fleites YA, Aguiar J, Cinza Z, et al. HeberNasvac, a Therapeutic Vaccine for Chronic Hepatitis B, Stimulates Local and Systemic Markers of Innate Immunity: Potential Use in SARS-CoV-2 Postexposure Prophylaxis. Euroasian J Hepato-Gastroenterol 2021;11(2):59-70.

Looking for Crumbs in the Obesity Forest: Anti-obesity Interventions and Obesity-Associated Cardiometabolic Traits in the Mexican Population. History and Systematic Review With Meta-Analyses.

Mexicans and Mexican Americans share culture, genetic background, and predisposition for chronic complications associated with obesity and diabetes making imperative efficacious treatments and prevention. Obesity has been treated for centuries focused-on weight loss while other treatments on associated conditions like gout, diabetes (T2D), and hypertriglyceridemia. To date, there is no systematic review that synthesizes the origin of obesity clinics in Mexico and the efforts to investigate treatments for obesity tested by randomized clinical trials (RCT). We conducted systematic searches in Pubmed, Scopus, and Web of Science to retrieve anti-obesity RCT through 2019 and without an inferior temporal limit. The systematic review included RCT of anti-obesity treatments in the Mexican adult population, covering alternative medicine, pharmacological, nutritional, behavioral, and surgical interventions reporting metabolism-associated traits such as BMI, weight, waist circumference, triglycerides, glucose, among others. Only the studies with at least 3 months of treatment were included in the meta-analyses in order to reduce placebo effects. We found 634 entries, after removal of duplicates and screening the studies based on eligibility criteria, we analyzed 43 national, and 2 multinational-collaborative studies. Most of the national studies had small sample sizes, and the implemented strategies do not have replications in the population. The nutrition/behavioral interventions were difficult to blind, and most studies have medium-to-high risk of bias. Nutritional/behavioral interventions and medications showed effects on BMI, waist circumference, and blood pressure. Simple measures like pure water instead of sweet beverages decrease triglycerides and systolic blood pressure. Dark chocolate showed the highest effect for BMI and high blood pressure, and treatment with insulin increased weight in those with T2D. The study of obesity in Mexico has been on-going for more than four decades, the interest on RCT just increased until this millennium, but with small sample sizes and lack of replication. The interventions affect different cardiometabolic associated traits, which should be analyzed in detail in the population living near the Mexico-U.S. border; therefore, bi-national collaboration is desirable to disentangle the cultural effects on this population's treatment response. Systematic Review Registration: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42020221436, identifier: CRD42020221436.

Assessing the Effects of Childhelp's Speak Up be Safe Child Abuse Prevention Curriculum for High School Students.

Purpose: This study examined the Childhelp Speak Up Be Safe (CHSUBS) child abuse prevention curriculum for high school students and addressed a gap in evidence-based child maltreatment prevention programs. CHSUBS is grounded in theory and was developed to 1) provide students with the skills they need to prevent or interrupt child abuse, bullying, and neglect, and 2) increase student knowledge about safety related to abuse. Methods: Utilizing a cluster-randomized controlled trial design, the three high schools were randomly assigned to participate in the CHSUBS curriculum or the control group. Survey items measured the efficacy of the curriculum in grades 9 through 12. Surveys were implemented at baseline, immediately after the intervention, and after 6 months for a follow-up. Analyses included exploratory factor analyses and a paired samples t-test to determine whether increases in child maltreatment knowledge and resistance skills were gained. Results: Findings showed positive significant results that child maltreatment knowledge and resistance skills were significantly different from pre to post for the CHSUBS group and showed no significant control group changes. Conclusions: High school students in the CHSUBS group appeared to gain both child maltreatment knowledge and resistance skills. Future studies on prevention programming for high school students might show results that lead to a reduction in child maltreatment and an increase in better health outcomes for adolescents.

Teaching Youth to Resist Abuse: Evaluation of a Strengths-Based Child Maltreatment Curriculum for High School Students.

Child maltreatment (CM) is a serious and prevalent public health problem in the United States (U.S.) yet programming to combat the issue often overlooks high school aged youth (those aged 14-17). In 2017, over 90,000 youth in the U.S. experienced CM during their high school years (U.S. Department of Health and Human Services 2019). This manuscript will highlight the importance of prevention programs for youth affected by child maltreatment and report the findings of a pilot study that examined the effectiveness of the Childhelp Speak Up Be Safe Prevention Education Curriculum among high school students. The purpose of the pilot study was to determine if the revised and expanded curriculum for grades 9-12 was feasible and to examine the validity of the new survey items, including the RESIST strategy questions. The pilot study utilized a two-phase non-probability convenience sample to evaluate high school student gains in knowledge of safety related resistance strategies. High school students (N = 269) attending one urban charter public high school (grades 9-12) in the Southwest who completed pre- and post-survey RESIST strategy items participated in the pilot. The results indicated that students receiving the Childhelp Speak Up Be Safe Prevention Education Curriculum increased their identification and knowledge of safety related resistance strategies.

[Consenso experto en tiempos de COVID-19: aplicaciones del método Delphi en materia de salud].

La epidemia de COVID-19 ha modificado la cultura de la comunicación. La solución para los problemas de salud puede ser asertiva cuando es consensuada. El método Delphi es una herramienta de consenso que emplea rondas de listas de preguntas para recopilar información del conocimiento de un panel de expertos que analizan planteamientos y posibles soluciones a problemas. Se basa en la premisa de que, con la libertad del anonimato, la inteligencia combinada mejora el juicio individual y captura la opinión colectiva experta. El proceso del método es muy flexible, pues las rondas de preguntas pueden realizarse de manera presencial o remota. En este artículo se describe cómo implementar el método Delphi convencional en tiempos de confinamiento, y se analizan la utilidad y las limitaciones del método para su uso por expertos en salud para la resolución de problemas de tratamiento, diagnóstico o administrativos. Las tecnologías actuales para recolectar los datos permiten gran flexibilidad en el formato de los cuestionarios y facilitan la recopilación de la opinión experta. Gracias a su adaptabilidad, el método Delphi se está convirtiendo en una estrategia popular que involucra los ámbitos cualitativo y cuantitativo.

Increased expression of FAK isoforms as potential cancer biomarkers in ovarian cancer.

Focal adhesion kinase (FAK) is a non-receptor tyrosine kinase that is expressed in most human cell types (example: Epithelial cells, fibroblasts and endothelial), it serves a key role in the control of cell survival, proliferation and motility. The abnormal expression of FAK has been associated with poor prognosis in cancer, including ovarian cancer. However, although FAK isoforms with specific molecular and functional properties have been characterized, there are a limited number of published studies that examine FAK isoforms in ovarian cancer. The aim of the present study was to analyze the expression level of FAK and its isoforms in ovarian cancer. The expression of FAK kinase and focal adhesion targeting (FAT) domains was determined with immunohistochemistry in healthy ovary, and serous and mucinous cystadenoma, borderline tumor and carcinoma samples. Additionally, the expression of FAK and its isoforms were investigated in three ovarian cancer-derived cell lines with western blotting and reverse transcription-semi-quantitative polymerase chain reaction. An increased expression of FAK kinase domain was determined in serous tumor samples and was associated with advancement of the lesion. FAK kinase domain expression was moderate-to-low in mucinous tumor samples. The expression of the FAK FAT domain in tumor samples was reduced, compared with healthy ovary samples; however, the FAT domain was localized to the cellular nucleus. Expression of alternative transcripts FAK°, FAK28,6 and FAK28 was determined in all three cell lines investigated. In conclusion, FAK kinase and FAT domains are differentially expressed among ovarian tumor types. These results indicated the presence of at least two isoforms of FAK (FAK and the putative FAK-related non-kinase) in tumor tissue, which is supported by the cells producing at least three FAK alternative transcripts. These results may support the use of FAK and its isoforms as biomarkers for ovarian cancer.

Antioxidant capacity and structural changes of human serum albumin from patients in advanced stages of diabetic nephropathy and the effect of the dialysis.

Changes in the antioxidant capacity of albumin and alterations of the albumin structural conformation were examined in patients in advanced stages of diabetes nephropathy. Human serum albumin was purified from diabetic patients in pre-dialysis (glomerular filtration rate [GFR] between 15 and 29 ml min(-1) 1.73 m(-2)) and those in dialysis (GFR ≤ 15 ml min(-1) 1.73 m(-2)) and then compared with albumin from patients with a normal GFR (>90 ml min(-1) m(-2)). We evaluated the antioxidant capacity of albumin using an enhanced chemiluminescence-based assay and thiol group content, and the structural changes were evaluated by circular dichroism and fluorescence spectroscopy. The antioxidant capacity and thiol content of albumin from patients in advanced stages of diabetic nephropathy were markedly reduced. The circular dichroism spectra showed a mean albumin α-helix content reduction from 44 to 37 % and from 44 to 30 % between the control group and pre-dialysis and dialysis patients, respectively. Additionally, the fluorescence intensity was reduced by 4.2 and 13 % for the groups 4 and 5, respectively, in relation with the control. These data provide evidence for the partial denaturation of albumin and exacerbated oxidative stress among patients in advanced stages of diabetes nephropathy before and even after dialysis.

Pharmacokinetic and pharmacodynamic comparison of two "pegylated" interferon alpha-2 formulations in healthy male volunteers: a randomized, crossover, double-blind study.

BACKGROUND: Interferon (IFN) alpha conjugation to polyethylene glycol (PEG) results in a better pharmacokinetic profile and efficacy. The aim of this study was to compare the pharmacokinetic, pharmacodynamic and safety properties of a new, locally developed, 40-kDa PEG-IFN alpha-2b preparation with a reference, commercially available PEG-IFN alpha-2a in healthy male volunteers. METHODS: A randomized, crossover, double-blind study with a 3-weeks washout period, was done. A single 180 micrograms PEG-IFN alpha-2 dose was administered subcutaneously in both groups. Sixteen apparently healthy male subjects were included. Serum PEG-IFN concentration was measured during 336 hours by an enzyme immunoassay (EIA). Other clinical and laboratory variables were used as pharmacodynamic and safety criteria. RESULTS: The pharmacokinetic comparison by EIA yielded a high similitude between the formulations. In spite of a high subject variability, the parameters' mean were very close (in all cases p > 0.05): AUC: 53623 vs. 44311 pg.h/mL; Cmax: 333 vs. 271 pg/mL; Tmax: 54 vs. 55 h; half-life (t1/2): 72.4 vs. 64.8 h; terminal elimination rate (lambda): 0.011 vs. 0.014 h(-1); mean residence time (MRT): 135 vs. 123 h for reference and study preparations, respectively. There were no significant differences with respect to the pharmacodynamic variables either: serum neopterin and beta-2 microglobulin levels, stimulation of 2'5' oligoadenylate synthetase expression, and serum IFN antiviral activity. A strong Spearman's rank order correlation (p < 0.01) between the pharmacokinetic and pharmacodynamic concentration-time curves was observed. Both products caused similar leukocyte counts diminution and had similar safety profiles. The most frequent adverse reactions were leukopenia, fever, thrombocytopenia, transaminases increase and asthenia, mostly mild. CONCLUSIONS: Both formulations are fully comparable from the pharmacokinetic, pharmacodynamic, and safety profiles. Efficacy trials can be carried out to confirm clinical similarity.

[Diffuse ganglioneuromatosis: infrequent pathology communication and review of literature]. / Ganglioneuromatosis difusa: comunicación de una patología infrecuente y revisión de la literatura.

Ganglioneuromatosis is an infrequent disease characterized by mienteric plexus and enteric nervous fiber hyperplasia, habitually manifested by constipation, pain and abdominal distension. There are two ways of presentation: mucosa or transmural. Regularly may be associated with another pathologies like multiple endocrine neoplasia type 2 and Von Recklinghausen's disease. The objective of this publication is to present an extremely infrequent pathology and make a bibliographic review of its clinical, diagnostic, prognostic and therapeutical aspects. We present a fifty-six year old male with a six month history ofabdominal pain and pseudo-obstruction syndrome. During the hospitalization he presents infectious complications, with septic shock secondary to nosocomial pneumonia and death. A Necropsy was done and ganglioneuromatosis was diagnosed. Due to the low incidence of this pathology, it is rarely included in the differential diagnosis of pseudo-obstructive syndrome in adults. The post-mortem diagnosis moved us to perform a bibliographic search to amplify our knowledge and compare this particular case with those previously communicated by other authors.

Formación de ayudantes en Alimentación del niño sano / Assistant professors' training in Feeding Healthy Children

Los procesos de enseñanza–aprendizaje son fundamentales para la formación de cualquier profesional. Quienes integran el equipo docente de “Alimentación del niño sano” de la Universidad de Buenos Aires buscan constantemente reformular las estrategias de enseñanza–aprendizaje. Es por eso que se organizó dentro de ésta materia, la “Escuela de ayudantes”. La misma ha tenido sus orígenes en el año 1998. La finalidad, por aquel entonces, fue crear un ámbito de trabajo en equipo, sobre los temas relacionados con la materia y permitió en el 2004 publicar el libro “Nutrición Pediátrica” y su actualización “Nutrición del Niño Sano” en el 2007. Hoy, gracias al esfuerzo de todos los que han formado parte de ella, se ha logrado sistematizar la formación de los ayudantes para lograr mantener al grupo actualizado y preparado para afrontar la tarea de enseñanza. El equipo docente esta integrado por un pediatra y seis licenciados en Nutrición. En el año 2007 se realizó una evaluación de los ayudantes y del funcionamiento del sistema de formación docente. Al finalizar la evaluación el equipo se encuentra conforme con los resultados y con la modalidad de trabajo. La mayoría de los ayudantes considera fundamental la formación docente y cree que la escuela de ayudantes le ha servido para alcanzar ese objetivo. Desde el punto de vista de los contenidos abordados, los conocimientos, las actitudes y vínculos, las experiencias transmitidas, las horas dedicadas y los tópicos discutidos, tanto ayudantes como docentes a cargo están conformes y lo consideran un espacio de enriquecimiento mutuo. Los autores de esta comunicación consideran de vital importancia la “formación de ayudantes” entre los profesionales de la salud que integran equipos docentes universitarios, así como el trabajo intra e ínter – materias

[Evaluation of quality control of baciloscopy in tuberculosis diagnosis in Cuba]. / Evaluación del control de calidad de la baciloscopia en el diagnóstico de la tuberculosis en Cuba.

This study was aimed at evaluating the diag-nosis of tuberculosis in Provincial Hygiene and Epidemiological Centers of the country including special municipality Isle of Youth. The quality control was performed on 4 382 sputum smears from January to December 2004 following the Manual of procedures of the National Tuberculosis Control program. Good quality in Ziehl Neelsen extension and staining was seen in 4003 smears (91.35%). The overall agreement coefficient between the National Tuberculosis Reference Laboratory and the rest of the provincial laboratories was 99.79%. Sensitivity and specificity figures were over 99%. These results showed the quality of sputum smears microscopy diagnosis at provincial laboratories and the need of carrying out permanent supervision, monitoring and re-training of staff in acid-fast bacilli test in order to lay down the foundations for the introduction of blind rechecking methods and panel of sputum smears, aimed at improving the tuberculosis diagnosis quality in Cuba.

Tuberculosis recurrences: reinfection plays a role in a population whose clinical/epidemiological characteristics do not favor reinfection.

BACKGROUND: Tuberculosis (TB) recurrences can be due to either reactivation by the same strain (standard assumption) or reinfection by a new strain. Reinfection has mainly been studied in selected populations with a high risk of reexposure to TB. Our aim was to analyze the role of reinfection in TB recurrences in unselected populations, without the clinical/epidemiological circumstances that favor the involvement of a new different strain of Mycobacterium tuberculosis in the recurrence. METHODS: A molecular typing analysis was performed with 92 sequential isolates of M tuberculosis from 43 patients with recurrent TB, during a 12-year period. The subjects were both positive and negative for the human immunodeficiency virus, most did not adhere to anti-TB therapy, and they lived in an area with a moderate incidence of TB. Recurrence was considered as being caused by reinfection when the molecular fingerprints for the strains involved in the sequential episodes of TB were different. RESULTS: In 14 (33%) of the 43 patients, different M tuberculosis strains were involved in the first and in subsequent episodes of TB. Reinfection was found for patients who were both positive and negative for the human immunodeficiency virus, and most patients did not adhere to anti-TB therapy. Differences between the reinfection and reactivation groups were not significant (P =.77) according to the time interval between episodes. CONCLUSIONS: Reinfection plays an important role in recurrent TB in a population without the clinical/epidemiological circumstances that are usually assumed to favor it. Reinfection should, thus, be considered as a cause of TB recurrences in a wider context than before.

Niveles de colesterol sanguineo en poblaciones infantiles entre 6 y 10 años de dos estratos socioeconómicos diferentes / Serum cholesterol levels in children

Teniendo en cuenta que los niveles de colesterol sérico constituyen un factor predisponente para la aparición de enfermedades cardiovasculares y siendo un factor prevenible y detectable desde la infancia, se realizó un estudio clínico epidemiológico donde se determinaron las concentraciones de colesterol total sérico empleando el método enzimático (REFLOTRON), en 288 niños bogotanos con edades comprendidas entre los 6 y los 10 años de edad, de ambos sexos y pertenecientes a dos estratos socioeconómicos diferentes, con el fin de determinar los valores promedio y las posibles diferencias entre los dos sexos, grupos de edad y estrato socioeconómico. Dentro de los resultados, se obtuvieron valores promedio de colesterol total de 167,271 +/- 28,173 mg/dl, con diferencias significativas entre los promedios de la población de nivel socioeconómico medio alto y los de medio bajo (t<0,05). No se encontraron diferencias significativas en cuanto a la edad ni al sexo

Tumores del soma, 1981-1987 / Tumors of soma, 1981-1987

Se revisaron 323 historias clínicas de pacientes con afección tumoral, que fueron atendidos en el Servicio de Ortopedia del Hospital "Dr. Ernesto Guevara de la Serna" en el período comprendido entre 1981 y 1987, con el objetivo de conocer aspectos generales como edad, sexo y especificamente tipo de tumores, localización, síntoma inicial, tiempo transcurrido entre consulta, diagnóstico, etcetera