Forensic parameters and population structure based on 21 autosomal STRs with the investigator 24plex QS in mestizos from the Mexico City population.

Allele frequencies and forensic parameters for 21 STR autosomal markers (CSF1PO, D10S1248, D12S391, D13S317,D16S539, D18S51, D19S433, D1S1656,D21S11, D22S1045, D2S1338, D2S441, D3S1358, D5S818, D7S820, D8S1179, FGA, SE33, TH01, TPOX and vWA) were reported in 289 unrelated individuals from Mexico City, Mexico. In addition, an interpopulation analysis was performed including other world populations. In brief, the established population database of 21 autosomal STR markers in the present work is adequate for human identification purposes.

Proteome of Agave angustifolia Haw.: Uncovering metabolic alterations, over-accumulation of amino acids, and compensatory pathways in chloroplast-deficient albino plantlets.

Amino acids (AA) are essential molecules for plant physiology, acting as precursor molecules for proteins and other organic compounds. Chloroplasts play a vital role in AA metabolism, yet little is known about the impact on AA metabolism of albino plants' lack of chloroplasts. In this study, we conducted a quantitative proteome analysis on albino and variegated somaclonal variants of Agave angustifolia Haw. to investigate metabolic alterations in chloroplast-deficient plants, with a focus on AA metabolic pathways. We identified 82 enzymes involved in AA metabolism, with 32 showing differential accumulation between the somaclonal variants. AaCM, AaALS, AaBCAT, AaIPMS1, AaSHMT, AaAST, AaCGS, and AaMS enzymes were particularly relevant in chloroplast-deficient Agave plantlets. Both variegated and albino phenotypes exhibited excessive synthesis of AA typically associated with chloroplasts (aromatic AAs, BCAAs, Asp, Lys, Pro and Met). Consistent trends were observed for AaBCAT and AaCM at mRNA and protein levels in albino plantlets. These findings highlight the critical activation and reprogramming of AA metabolic pathways in plants lacking chloroplasts. This study contributes to unraveling the intricate relationship between AA metabolism and chloroplast absence, offering insights into survival mechanisms of albino plants.

Cytotoxic screening of plants from the Brazilian Atlantic Forest has led to the identification of Casearia arborea and Sorocea hilarii as sources of antitumor compounds.

In the present study, we have evaluated the cytotoxic activity of 282 extracts from 72 native plant species of the Brazilian Atlantic Forest biome. As a result, Casearia arborea and Sorocea hilarii leaves extracts showed cytotoxic activity against three tumour cell lines tested (B16F10, SW480 and Jurkat). After bioassay-guided fractionation, the bioactive fractions were submitted to the dereplication study via High-performance Liquid Chromatography, connected to High-resolution Mass Spectrometry (HPLC-ESI-QTOF/MS) analysis, combined with a Global Natural Products Social Molecular Networking (GNPS) tool. A combination of bioactivity-guided and dereplication approaches resulted in the putative annotation of 27 clerodane diterpenes and 9 flavonoids as main compounds present in the cytotoxic fractions of C. arborea. Regarding the active fraction of S. hilarii, 10 megastigmans, 17 spirostane steroids derivatives and 2 lignans were putatively identified. In conclusion, Casearia arborea and Sorocea hilarii are potential sources of antitumor compounds.

Missing persons patterns from Mexico: evidence of a forensic emergency crisis.

The relatives of missing persons in Mexico have denounced the slowness with which a court prosecution file is created by the justice administration system. Theoretically, the search is immediate, but many cases must wait 72 h to build an investigation folder as a legal criterion. This standard has been copied from the UK and Australian police reports without adapting to the Mexican context. The analysis of disappearance reports between 2006 and 2018 shows that this timing criterion in Mexico is not supported. The analyzed database (the National Center for Planning, Analysis, and Information to Combat Crime, CENAPI) showed that in the 72-h range, only 34.53% of the people had been found alive or dead; figure far from 50% to 80% of Europe or Australia. This fact shows that those searching officers or the judicial bureaucracy can act as a factor that limits the search for missing persons. Additionally, there is a random pattern in the geospatial distribution of disappearance, with non-homogeneous frequencies per year. Results highlight the participation of families, the adoption of an evidence-based model, and the generation of geospatial forensic intelligence analysis to generate evidence-based public policies. The social demand of families to the government for not considering them takes relevance in forensic practice in Mexico, and the disappearance data support this assertion.

Tratamiento definitivo de Fistula Broncopleural de difícil manejo con terapia de presión negativa / Definitive treatment of difficult-to-manage Bronchopleural Fistula with negative pressure therapy

Las fistulas bronquiales ocurren como complicaciones de múltiples enfermedades del tórax y procedimientos. El tratamiento de las mismas después de una lobectomía es complicado y requieren largas hospitalizaciones. La Terapia de presión negativa (TPN) ha demostrado beneficios y evidencias en el manejo de las fistulas broncopleurales. Masculino de 25 años de edad, con antecedente de tuberculosis con tratamiento completo, posterior presentó neumonía necrotizante en lóbulo superior derecho y empiema, realizando lobectomía complicándose con fistula broncopleural e infecciones a repetición, requiriendo ventana pulmonar y múltiples internaciones con diferentes tratamientos hasta ser manejada con el sistema presión negativa (TPN) con mejoría marcada. (AU)

Bronchial fistulas occur as complications of multiple chest diseases and procedures. Their treatment after a lobectomy is complicated and requires long hospital stays. Negative pressure therapy (NPT) has shown benefits and evidence in the management of bronchopleural fistulas. A 25-year-old male, with a history of tuberculosis with complete treatment, subsequently presented necrotizing pneumonia in the right upper lobe and empyema, performing lobectomy, complicating with bronchopleural fistula and recurrent infections, requiring a pulmonary window and multiple hospitalizations with different treatments until managed with the negative pressure system (NPT) with marked improvement. (AU)

Dysregulation of miR-381-3p and miR-23b-3p in skeletal muscle could be a possible estimator of early post-mortem interval in rats.

BACKGROUND: The post-mortem interval (PMI) is the time elapsed since the dead of an individual until the body is found, which is relevant for forensic purposes. The miRNAs regulate the expression of some genes; and due to their small size, they can better support degradation, which makes them suitable for forensic analysis. In the present work, we evaluated the gene expression of miR-381-3p, miR-23b-3p, and miR-144-3p in skeletal muscle in a murine model at the early PMI. METHODS: We designed a rat model to evaluate the early PMI under controlled conditions. This model consisted in 25 rats divided into five groups of rats, that correspond to the 0, 3, 6, 12 and 24 hours of PMI. The 0 h-PMI was considered as the control group. Muscle samples were taken from each rat to analyze the expression of miR-381-3p, miR-23b-3p, and miR-144-3p by quantitative RT-PCR. The gene expression of each miRNA was expressed as Fold Change (FC) and compared among groups. To find the targets of these miRNAs and the pathways where they participate, we performed an in-silico analysis. From the gene targets of miR-381-3p identified in the silico analysis, the EPC1 gene was selected for gene expression analysis by quantitative RT-PCR in these samples. Also, to evaluate if miR-381-3p could predict the early PMI, a mixed effects model was calculated using its gene expression. RESULTS: An upregulation of miR-381-3p was found at 24 h-PMI compared with the control group of 0 h-PMI and (FC = 1.02 vs. FC = 1.96; p = 0.0079). This was the opposite for miR-23b-3p, which had a down-regulation at 24 h-PMI compared to 0 h-PMI (FC = 1.22 vs. FC = 0.13; p = 0.0079). Moreover, the gene expression of miR-381-3p increased throughout the first 24 h of PMI, contrary to miR-23b-3p. The targets of these two miRNAs, participate in biological pathways related to hypoxia, apoptosis, and RNA metabolism. The gene expression of EPC1 was found downregulated at 3 and 12 h of PMI, whereas it remained unchanged at 6 h and 24 h of PMI. Using a multivariate analysis, it was possible to predict the FC of miR-381-3p of all but 6 h-PMI analyzed PMIs. DISCUSSION: The present results suggest that miR-23b-3p and miR-381-3p participate at the early PMI, probably regulating the expression of some genes related to the autolysis process as EPC1 gene. Although the miR-381-3p gene expression is a potential estimator of PMI, further studies will be required to obtain better estimates.

Analysis of 14C concentration in teeth to estimate the year of birth in the Mexican population.

The 14C analysis of permanent teeth employing nuclear techniques has a direct application in Forensic Sciences since teeth are the hardest part of the human body and can survive natural decay or extreme conditions. After the first Accelerator Mass Spectrometry Laboratory AMS-LEMA at UNAM, our research group is interested in reproducing 14C analysis on teeth as other countries to estimate age in the Mexican population samples. One of the main goals of this exploratory study is to know the best methodology considering relevant biological factors based on differences in tissues (enamel and dentin) that allows us to know the year of birth through the 14C concentration comparing the yield between 14C analyses from carbonate in enamel and collagen in dentin. In this study, Accelerator Mass Spectrometry (AMS) has been performed in 22 contemporary teeth samples (each one donated from 1 different adult), participating 22 individuals by informed consent to enable a new tool and improve forensic practices in Mexico. Carbon is extracted, converted to graphite, and pressed into a cathode. The sample is taken to an AMS system, where carbon isotopes are separated, counted, and the 14C/12C and 13C/12C ratios determined. Our results for standards and teeth samples from Mexican people are in good agreement with the expected values; they are also useful to set up the best conditions for studies in dentin and enamel. However, this is a destructive technique for dental organs; it is not suitable for individuals born previous 1950. New challenges in sample preparation processes are to be solved to take advantage of the nuclear techniques developed in the last 50 years and make new contributions to society.

Pattern recognition receptors in annelids.

The existence of pattern recognition receptors (PRRs) on immune cells was discussed in 1989 by Charles Janeway, Jr., who proposed a general concept of the ability of PRRs to recognize and bind conserved molecular structures of microorganisms known as pathogen-associated molecular patterns (PAMPs). Upon PAMP engagement, PRRs trigger intracellular signaling cascades resulting in the expression of various proinflammatory molecules. These recognition molecules represent an important and efficient innate immunity tool of all organisms. As invertebrates lack the instruments of the adaptive immune system, based on "true" lymphocytes and functional antibodies, the importance of PRRs are even more fundamental. In the present review, the structure, specificity, and expression profiles of PRRs characterized in annelids are discussed, and their role in innate defense is suggested.

New Ventilator Strategies: High-Frequency Oscillatory Ventilation Combined with Volume Guarantee.

High-frequency oscillatory ventilation (HFOV) has been proposed as an alternative method of invasive ventilation in immature infants to prevent ventilator lung injury. To better control the size of the high-frequency tidal volume and to prevent large tidal volumes, a new strategy of controlling the tidal volume during HFOV (VThf) has been developed, HFOV-volume guarantee (VG). Data from preclinical, neonatal animal studies in normal and surfactant-depleted lungs have demonstrated the feasibility of this technique to directly control the VThf in the normal compliance and low compliance situations. Different I:E ratios also can modify the effect of CO2 washout during HFOV combined with VG in a different way as without the VG modality. Finally, clinical use of this technique in newborn infants has demonstrated the possibility of using very high frequency combined with constant very low VThf to decrease the risk of lung trauma related to the ventilator.

Electrical velocimetry for non-invasive monitoring of the closure of the ductus arteriosus in preterm infants.

Closure of a patent ductus arteriosus (PDA) in preterm infants modifies cardiac output and induces adaptive changes in the hemodynamic situation. The present study aims to analyze those changes, through a non-invasive cardiac output monitor based on blood electrical velocimetry, in preterm babies. A prospective observational study of preterm infants with a gestational age of less than 28 weeks, and a hemodynamic significant PDA, requires intravenous ibuprofen or surgical closure. All patients were monitored with electrical velocimetry before treatment and through the following 72 h. Two groups were defined, ibuprofen and surgical closure. Variations of cardiac output were analyzed from the basal situation and at 1, 8, 24, 48, and 72 h on each group. During a 12-month period, 18 patients were studied. The median gestational age in the ibuprofen group (12/18) was 26+5 weeks (25+5-27+3) with a median birth weight of 875 (670-1010) g. The cardiac output index (CI) value was 0.29 l/kg/min (0.24-0.34). Among the patients with confirmed ductus closure (50%), a significant CI decrease was shown (0.24 vs 0.29 l/kg/min; P 0.03) after 72 h (three ibuprofen doses). A statistically significant decrease in systolic volume (SVI) was found: 1.62 vs 1.88 ml/kg, P 0.03 with a decrease in contractility (ICON), 85 vs 140, P 0.02. The gestational age in the surgical group (6/18) was 25+2 weeks (24-26+3) with a median weight of 745 (660-820) g. All patients in this group showed a decrease in the immediate postoperative CI (1 h after surgery) 0.24 vs 0.30 l/kg/min, P 0.05, and a significant decrease in contractility (ICON 77 vs 147, P 0.03). In addition, a no statistically significant decrease in SVI (1.54 vs 1.83 ml/kg, P 0.06), as well as an increase in systemic vascular resistance (10,615 vs 8797 dyn/cm2, P 0.08), were detected. This deterioration was transient without significant differences in the remaining periods of time evaluated. CONCLUSION: The surgical closure of the PDA in preterm infants causes a transient deterioration of cardiac function linked to a documented decrease in the left ventricular output. The hemodynamic changes detected after pharmacological PDA closure are similar but those patients present a better clinical tolerance to changes in the cardiac output. What is Known: • Surgical ductus closure generates acute hemodynamic changes in cardiac output and left ventricular function. What is New: • The hemodynamic changes detected after pharmacological ductus closure are similar to those found in the surgical closure. Electrical velocimetry can detect those changes.

Using very high frequencies with very low lung volumes during high-frequency oscillatory ventilation to protect the immature lung. A pilot study.

OBJECTIVE: High-frequency oscillatory ventilation (HFOV) has been described as a rescue therapy in severe respiratory distress syndrome (RDS) with a potential protective effect in immature lungs. In recent times, HFOV combined with the use of volume guarantee (VG) strategy has demonstrated an independent effect of the frequency on tidal volume to increase carbon-dioxide (CO2) elimination. The aim of this study was to demonstrate the feasibility of using the lowest tidal volume on HFOV+VG to prevent lung damage, maintaining a constant CO2 elimination by increasing the frequency. STUDY DESIGN: Newborn infants with RDS on HFOV were prospectively included. After adequate and stable ventilation using a standard HFOV strategy, the tidal volume was fixed using VG and decreased while the frequency was increased to the highest possible to maintain a constant CO2 elimination. Pre- and post-PCO2, delta pressure and tidal volume obtained in each situation were compared. RESULT: Twenty-three newborn infants were included. It was possible to increase the frequency while decreasing the tidal volume in all patients, maintaining a similar CO2 elimination, with a tendency to a lower mean PCO2 after reaching the highest frequency. High-frequency tidal volume was significantly lower, 2.20 ml kg(-1) before vs 1.59 ml kg(-1) at the highest frequency. CONCLUSION: It is possible to use lower delivered tidal volumes during HFOV combined with VG and higher frequencies with adequate ventilation to allow minimizing lung injury.

Rabdomiolisis aguda: revisión y evaluación del daño renal / Acute rhabdomyolysis: review and rates of renal failure

Introducción: Analizamos a los pacientes atendidos en nuestro hospital con rabdomiolisis, valorando su función renal y las características relacionadas. Material y métodos: Estudio retrospectivo de 2,5 años, en el que se incluyen pacientes menores de 16 años con cifras de creatinfosfocinasa (CPK) >1.000 UI/L. Se excluyeron los menores de 1 mes y los que presentaban una elevación de CPK de origen cardiaco. Definimos daño renal agudo según los criterios RIFLE adaptados a pediatría. Se recogieron diferentes variables clínicas y bioquímicas. Resultados: Se analizaron 55 pacientes (mediana de edad de 8 años) con CPK inicial de 1.826 UI/L (rango: 1.213-4.414). Las causas más frecuentes fueron las miositis virales, la cirugía muscular y las convulsiones. El 15,9% presentó daño renal agudo, que no se relacionó con la causa de rabdomiolisis y se asoció a cifras elevadas de CPK. Ninguno precisó depuración extrarrenal. Conclusiones: El daño renal agudo asociado a rabdomiolisis suele ser leve y más frecuente en los niños con valores más elevados de CPK (AU)

Objectives: To analyze patients with rhabdomyolysis, assessing clinical presentation and prevalence of acute renal failure. Material and methods: We performed a retrospective study of patients younger than 16 years of age with creatine-phospokinase (CPK) levels greater than 1,000 IU/L who were attended at our tertiary pediatric hospital during a 2.5 year period. Neonatal patients and those with elevation of myocardial specific form of CPK were excluded. Acute renal failure was assessed according to RIFLE criteria adapted to pediatric patients. Clinical and laboratory data were collected. Results: A total of 55 patients were included (median age 8 years). The median initial CPK level was 1,826 IU/L (range: 1,213-4,414). The most common etiologies were viral myositis, muscle surgery and seizures. Acute renal failure that was unrelated to the cause of rhabdomyolysis occurred in 15.9% and was related to higher levels of CPK. None of them required renal replacement therapy. Conclusion: Acute renal failure in children is usually mild and it is more likely to happen in children with higher levels of CPK (AU)

[Bicycle accidents treated in emergency departments. A multicentre study]. / Accidentes de bicicleta atendidos en los Servicios de Urgencias. Estudio multicéntrico.

OBJECTIVES: To describe epidemiological characteristics, types of injury, prognosis and medical management of bicycle-related Paediatric Emergency Department (ED) visits and to identify potential preventive measures. PATIENTS AND METHODS: This multicentred, observational prospective study included all children between 3 and 16 years of age treated for bicycle-related injuries in the Emergency Departments of 15 Spanish Hospitals belonging to the «Unintentional Paediatric Injury Workshop¼ of the Spanish Paediatric Emergency Society between the 1(st) of June 2011 and the 31(st) of May 2012. Characteristics of all ED visits, as well as epidemiological data and accident-related information, were collected. RESULTS: A total of 846 patients were included in the study, with a male predominance (72.9%) and a median age of 9.6 ± 3.6 years. Head injury was the third most common injury (22.3%) and the main cause of admission to the Pediatric Intensive Care Unit (PICU) (68.4%). More than three-quarters (77.9%) of the patients did not wear a helmet, which was significantly associated to a higher incidence of head injury and admission to PICU. Older children (OR 1.063) and bicycle injuries involving motor vehicles (OR 2.431) were identified as independent risk factors for worse outcomes. CONCLUSIONS: Since helmet use reduces up to 88% of central nervous system lesions secondary to head injury, promotion of its use should be the main preventive measure, followed by restriction of bike-riding to cycling areas.

Seguridad en el empleo de probióticos en la prevención de la enterocolitis necrotizante en prematuros / No disponible

No disponible

SoxS regulates the expression of the Salmonella enterica serovar Typhimurium ompW gene.

OmpW of Salmonella enterica serovar Typhimurium has been described as a minor porin involved in osmoregulation, and is also affected by environmental conditions. Biochemical and genetic evidence from our laboratory indicates that OmpW is involved in efflux of and resistance towards paraquat (PQ), and its expression has been shown to be activated in response to oxidative stress. In this study we have explored ompW expression in response to PQ. Primer extension and transcriptional fusions showed that its expression was induced in the presence of PQ. In silico analyses suggested a putative binding site for the SoxS transcriptional factor at the ompW regulatory region. Electrophoretic mobility shift assays (EMSAs) and footprinting experiments showed that SoxS binds at a region that starts close to -54 and ends at about -197 upstream of the transcription start site. Transcriptional fusions support the relevance of this region in ompW activation. The SoxS site is in the forward orientation and its location suggests that the ompW gene has a class I SoxS-dependent promoter.

Inteligencia emocional percibida y diferencias individuales en el meta-conocimiento de los estados emocionales: una revisión de los estudios con el TMMS / Perceived emocional intelligence and individual differences in the meta-knowledge of emocional status: a review of the studies with the Trait Meta-Mood Scale

En este artículo se realiza una revisión de los trabajos empíricos realizados hasta la fecha con el Trait Meta-Mood Scale (Salovey, Mayer, Goldman, Turvey y Palfai, 1995), la primera medida de auto-informe para evaluar la inteligencia emocional desde el modelo de inteligencia emocional de Salovey y Mayer (1990; Mayer y Salovey, 1997). En concreto, se realiza una breve descripción de la medida y de su adaptación al castellano. Además, se presentan los resultados obtenidos desde su aparición en 1995 en diferentes estudios de índole aplicada, clínica, experimental y transcultural. A continuación se analiza cada una de las dimensiones que componen el instrumento así como su perfil diferencial como predictores del bienestar individual. Los resultados de diferentes estudios examinados muestran que el patrón característico de personas con mejores niveles de adaptación psicológica han sido aquellas con puntuaciones moderadasbajas en Atención emocional y altas puntuaciones en Claridad y Reparación. Finalmente, se discuten posibles mejoras en la escala así como futuras líneas de investigación e implicaciones del uso de este instrumento

In this artide, we revised the empirical artides carried out with the Trait Meta-Mood Scale (Salovey, Mayer, Goldman, Turvey, & Palfai, 1995), the first self-report measure to evaluate emotional intelligence (El) based on Salovey and Mayer's model of emotional intelligence (1990; Mayer & Salovey, 1997). In short, a brief description of the measure and its Spanish adaptation is done. Moreover, the published findings since its development in 1995 from applied, clinical, experimental, and cross-cultural studies are reported. Furthermore, each dimension that composes the instrument along with its differential pattern as predictors of individual well-being is examined. Findings showed that individuals who pay medium-low attention to their own emotions, and score higher on emotional darity and repair show better emotional adjustment on reviewed studies. Finally, we discuss potential improvements of the scale, further research, and the implications from the use of the instrument

Orally administered IL-6 induces elevated intestinal GM-CSF gene expression and splenic CFU-GM.

Orally administered interleukin (IL)-6 has been shown to be of benefit in eliminating Campylobacter infection and in preventing sepsis following hemorrhage. In related experiments, it was seen that proliferating cells were found in the spleens of untreated mice given IL-6 by oral gavage. Injection of the DNA label, BrdU, showed that significant proliferation began at 4 h and peaked at 24 h in the splenic red pulp of animals given oral IL-6. Mice given saline showed no increase in splenic BrdU uptake. Histological analysis suggested a hematopoietic lineage for these cells. Clonogenic assays performed on spleen cells taken from mice given oral IL-6 revealed that increased granulocyte-macrophage colony forming units (GM-CFU) were present at 24 h post-IL-6 administration. No increase in GM colonies occurred in mice fed IL-3, granulocyte-colony stimulating factor (G-CSF) or granulocyte-macrophage (GM)-CSF. RT-PCR analysis of intestinal mRNA from treated mice revealed that GM-CSF mRNA was elevated at 4 h after oral IL-6 administration, but not in mice fed other cytokines. It is suggested that oral administration of IL-6 induces both proliferation and a brief elevation of GM-CFU in the hematopoietic spleens of mice. This increase appears to be the result of increased GM-CSF mRNA production in the intestines of mice fed IL-6.

Comparison of PCR and common clinical tests for the diagnosis of H. pylori in dyspeptic patients.

Helicobacter pylori has been recognized as a major gastric pathogen. The objective of this study was to assess the diagnostic value of common clinical tests to detect H. pylori infection, by comparison with PCR. Serum and gastric biopsy specimens from 106 dyspeptic patients were examined. Serology was performed with Pyloriset Dry test, and biopsies were examined histologically, for rapid urease activity and PCR amplification of an ureA gene segment of H. pylori. PCR primers were specific for H. pylori and required at least 1.47 pg of H. pylori DNA, corresponding to about 800 bacterial cells. According to serology, histology, rapid urease, and PCR, positive results were respectively found in 56%, 86%, 64%, and 85% of dyspeptic patients, primarily with gastritis. Relative to PCR, the sensitivity (and specificity) was 55% (38%) for serology, 86% (13%) for histology, 70% (69%) for urease. When combining histology and urease, Bayesian analysis of data indicated no advantage of using combined methods over rapid urease test alone. Histology should not any longer be considered a gold standard test for Helicobacter pylori. Urea breath test still seems the first option for non invasive diagnostic. If an invasive diagnostic is justified, highly specific and sensitive molecular methods should be used to examine specimens.