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Revista Biociencias Julio 2010 Vol. 1 Núm. 1 Año 1 Páginas 4 a 18 4ResumenEl maíz es uno de los cultivos económicosen los que se ha investigado y avanzadoen la mejora genética, pero es necesario estudiarla diversidad local presente en las áreas rurales,la que es conservada y manejada in situ,en los huertos caseros y/o fincas de los agricultores,dada la importancia de este grano básicoen la subsistencia familiar. Los objetivos de estetrabajo fueron identificar y caracterizar las razasde maíz en pequeños predios rurales de dos zonasde Cuba aisladas geográficamente: Pinar delRío y Guantánamo. Se estudiaron 55 poblacionestradicionales y se evaluaron 14 caracteres (nuevecontinuos y cinco categóricos) en la mazorca y elgrano. Estos se procesaron empleando la estrategiaen dos pasos WARD-Método Local Modificado(MLM) para el agrupamiento de observaciones,utilizando variables continuas y categóricassimultáneamente. Como medida de similaridad seempleó la distancia de Gower, utilizando para sucálculo el paquete estadístico SAS 9.0. De esteanálisis se derivó la formación de seis grupos yse identificaron cuatro de las razas de maíz másimportantes para Cuba: Criollo, Canilla, Tusóny Argentino, lo que sugiere que los campesinosconservan in situ una parte importante de la diversidad de las razas presentes en el germoplasmacubano de maíz. Se sugiere el estudio enotras áreas del país, específicamente en la regiónOriental, provincia de Guantánamo, con el objetivode corroborar la presencia de otras razas descritaspara Cuba, ya que éstas sólo han sido ubicadas enmuy baja frecuencia en localidades específicas delValle de Caujerí, en Guantánamo.

Objective: To explore menstrual knowledge, menstrual management, the use of menstrual products, the prevalence of menstrual poverty and to assess the acceptability of a menstrual equity intervention among students in the fourth grade of compulsory secondary education in Catalonia (Spain)., Method: Post-intervention mixed-methods study (cross-sectional study and qualitative study with focus groups) with a critical and gender perspective. It was conducted between July 2022 and March 2023. Descriptive and bivariate statistical analyses stratified by gender were carried out. Qualitative data were analysed using thematic analysis., Results: Women and people who menstruate rated the intervention favourably, while some men were reluctant. The intervention promoted the use of some reusable menstrual products, although some barriers to use menstrual cups were identified. Participants reported institutional barriers to menstrual management in the school setting and 19.4% stopped attending school during menstruation in the 6 months prior to the study. Between 10.9-16.4% reported menstrual poverty in the 6 months prior to the study, and 29,0% took actions to reduce the environmental impact of menstrual products., Conclusions: This study highlights the need for co-designing menstrual interventions that consider gender dynamics and sexist attitudes with students, as well as targeting it to teachers. The provision of reusable menstrual products can be helpful in promoting their use, although accompaniment should be provided. In parallel, it is crucial to strengthen menstrual education, as well as to reduce menstrual poverty and school absenteeism during menstruation., (Copyright © 2024 SESPAS. Publicado por Elsevier España, S.L.U. All rights reserved.)

Objective: The feminization of migration, the need to provide health care to an increasingly diverse population, seeking optimal health data led to considering this research. The objective was to determine the characteristics (socio-demographic profile, obstetric and gynecological record, and monitoring) of migrated pregnant women with a pregnancy process completed in 2019 in Catalonia compared to native women, in public centers (ASSIR-ICS)., Methods: This descriptive study was based on computerized clinical records of women in the 28 centers dependent on the ICS. A descriptive analysis of the variables was carried out to compare the origin of the pregnant women. The Pearson Chi-Square test at 5% and the corrected standardized residual was used to compare the groups and an analysis of variance for the comparison of means also at 5%., Results: 36.315 women were analyzed and the resulting mean age was 31.1 years. The BMI at the beginning of pregnancy was 25.4 on average. Smoking habit was 18.1% among Spanish 17.3% among European. Sexist violence was 4% in Latin American women, being statistically higher than the rest. The risk of preeclampsia was 23.4% in sub-Saharan women. Gestational diabetes was diagnosed mainly among Pakistanis (18.5%). The prevalence of Sexually Transmitted Infections (STIs) was detected in Latin Americans (8.6%), Spanish (5.8%) and Europeans (4.5%). Sub-Saharan women performed insufficient ultrasound control (58.2%) and had the lowest percentage of visits with 49.5%. Pregnancy monitoring was insufficient in 79.9% of all rural pregnant women., Conclusions: There are differences derived from the geographical origins of pregnant women that condition access to health services., Competing Interests: Disclosure The authors report no conflicts of interest in this work.

Background: Antimicrobial defined daily dose (DDD), a standardized metric to assess antimicrobial consumption in adult population, has limitations hampering its use in neonatal patients. This study proposes an alternative DDD design applicable for neonates., Methods: Neonates (<1 month-old) from 6 Spanish hospitals during a 12-months period were included. Weight and weeks gestational age of each neonate were the variables collected. DDD (g) for each antimicrobial was calculated by multiplying the obtained weight times the recommended dose (mg/kg) of the antimicrobial for the most common infectious indication selected by the Delphi method., Results: A total of 4820 neonates were included. Mean age was 36.72 weeks of gestational age and Mean weight was 2.687kg. Standardized DDD (intravenous; oral route) for representative antimicrobials were: Amoxicillin (0.08; 0.08), amoxicillin-clavulanic acid (0.27; 0.08), ampicillin (0.27; x), cloxacillin (0.13; 0.13), penicillin G sodium (0.12), cefazolin (0.13), cefuroxime (0.27; x), cefotaxime (0.27), ceftazidime (0.27), ceftriaxone (0.13), cefepime (0.27) piperacillin-tazobactam (0.54), aztreonam (0.24), azithromycin (0.03; 0.03), clindamycin (0.04; 0.04), amikacin (0.04), gentamicin (0.01), metronidazole (0.04; 0.08), ciprofloxacin (0.04; 0.05), levofloxacin (x;x), fluconazole (0.02; 0.02), itraconazole (0.01; 0.01), fosfomycin (0.27). Restricted antimicrobials: meropenem (0.11), teicoplanin (0.02), vancomycin (0.08; 0.11), linezolid (0.08; 0.08), daptomycin (x), amphotericin B liposomal (0.01)., Conclusions: A useful method for antimicrobial DDD measurement in neonatology has been designed to monitor antimicrobial consumption in hospital settings. It should be validated in further studies and thereby included in the design for neonatal antimicrobial stewardship programs in the future., (Copyright © 2021 The Authors. Publicado por Elsevier España, S.L.U. All rights reserved.)

Introduction: Chronic mucocutaneous candidiasis associated with autoimmunity and ectodermal dysplasia is an inborn error of immunity, characterized by a classic triad (chronic mucocutaneous candidiasis, hyperparathyroidism, and adrenal insufficiency) due to the presence of autoantibodies against different endocrine and non-endocrine organs; and it is predominant in Jews and Finns., Case Report: A 7-year-old girl of European descent and positive consanguinity, with a personal history of recurrent respiratory infections, chronic candidiasis, pseudomembranous colitis, and pancytopenia. The clinical findings raised suspicions of an inborn error of immunity, and the accurate diagnosis of APECED (autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy) was made by detecting a pathogenic variant in the AIRE gene through new- generation sequencing technologies., Conclusion: Nowadays, there is access to new genetic tools to establish an early diagnosis of the different inborn errors of immunity; thus, offering timely treatment and a better prognosis.

Faced with the prospect of a collapsed health system due to the COVID-19 pandemic, the professionals involved in the Neonatal Screening Programme (NSP) of Catalonia had to adapt to this situation in a flexible, forceful and efficient manner. The most important goals were to prevent the risk of infection in the professionals, in families and their newborns, as well as to ensure the same effectiveness for the early detection of the diseases included in our programme. To this end, the laboratory was reorganised by dividing the staff into groups and the spaces were redistributed. It was also necessary to modify several protocols and circuits, especially for the management of early discharges from maternity centres, and for the collection of the necessary second samples (from newborns with inconclusive results or for low quality samples). In general, a 36% reduction in the time of arrival of these second samples at the laboratory was achieved with respect to the previous circuit. In the specific case of cystic fibrosis detection, the implementation of a new strategy meant a 100% reduction in the request for second samples and a 70% reduction in the age of diagnosis of the newborn. After evaluating these changes, it can be concluded that in the face of the pandemic, the NSP of Catalonia showed determined leadership, aligning all its professionals, ensuring the continuity of the activity in the programme and generating new opportunities. The new processes and circuits implemented have been definitively consolidated, improving the efficiency of the programme.

Introduction and Objectives: Peritoneal catheter displacement is one of the most common complications of peritoneal dialysis. The alpha manoeuvre has been proposed as a repositioning technique, which involves returning the catheter to its correct position using rigid guidewires under fluoroscopic guidance. The aim of this study is to analyse the 107 procedures performed at our Centre to identify factors that may predict the success of the technique., Material and Methods: The alpha manoeuvre method was used in 86 patients, with a total of 107 procedures (70 patients underwent one manoeuvre only, 16 patients underwent two or more manoeuvres)., Results: The overall success rate of the technique was 60%. There were no differences in success rate in terms of gender (60% male vs. 40% female, p = 0.104), time of catheter failure (early 60% vs. late 62%, p = 0.849), type of catheter (75% self-locating vs. 58% spiral, p = 0.633) or the initial position of the catheter. There was only one case of peritonitis related to the procedure., Conclusions: The alpha manoeuvre is an effective and safe method for correcting peritoneal catheter displacement., (Copyright © 2020 Sociedad Española de Nefrología. Published by Elsevier España, S.L.U. All rights reserved.)

Inherited metabolism disorders are serious childhood diseases that lead to significant cognitive impairment and regression of psychomotor development. The pathophysiology of the neural progressive deterioration is usually associated with severe neuroinflammation and demyelination, and as a consequence, neurodegeneration. At the moment they have no adequate treatment and require early and aggressive therapeutic approaches, which entail high mortality rates and, very frequently, low degrees of functional improvement and survival. Bone marrow transplantation and bone marrow mesenchymal cells grafts are therapeutic and experimental therapies that improve the course of these diseases through different mechanisms of action: enzyme replacement, membrane exchange and regulation of the inflammatory process.

Autism Spectrum Disorders (ASD) are a functional alteration of the cerebral cortex, which presents structural neurodevelopmental anomalies that affect synaptic function and the pattern of connections within and between cortical columns. From its etiological aspect, ASD has an important genetic load, considering a polygenic disorder, derived from a combination of "de novo" genetic mutations, associated to a predisposition derived from common inherited variations. The main genetic anomalies associated with ASD involve genes that encode proteins of the synapse. Thus, in patients with ASD, alterations in the initial development of the synapses have been described in the connection circuits between complex processing cortical areas. The molecular complexity observed in the predisposition to develop an ASD, together with the diversity of structural phenotypes, has made animal models reproduce only partially the ASD. To advance in the experimental study it is therefore necessary to develop representative models, such as cellular models derived from human cells. In recent decades, the advances in stem cell biology give us a way to apply experimental paradigms in cells derived from individuals with ASD. Currently, induced pluripotent cells (IPs) derived from human adult cells allow deepening the study of molecular and cellular bases of the neuronal development in humans, as well as the anomalies in this development, which give rise to disorders such as ASD. However, they present inherent problems derived from the experimental manipulation that involves the reprogramming of gene expression, therefore other models are also been explored.

Introduction and Aims: Graft-versus-host disease (GVHD) is a common multisystemic complication of allogeneic hematopoietic cell transplantation. The most frequent presentations of graft-versus-host disease involve the skin, the gastrointestinal tract, and the liver. The aim of the present study was to know the frequency of gastrointestinal tract and liver GVHD and the characteristics of disease presentation in pediatric patients that underwent hematopoietic stem cell transplantation (HSCT) at a tertiary care hospital center in Mexico City., Material and Methods: A retrospective study was carried out, utilizing the case records of patients that underwent HSCT in 2015, to determine the frequency of GVHD in pediatric patients at a Mexican tertiary care hospital center., Results: In 2015, 16 HSCT were performed, 11 of which were carried out in males (68%). Only 3 patients developed graft-versus-host disease (18.7%). One patient presented with skin and liver GVHD and 2 patients presented with gastrointestinal tract and liver GVHD, which was the most frequent type., Conclusions: HSCT is still an uncommon procedure in Mexico and there is a lower frequency of gastrointestinal tract and liver GVHD than that reported in other studies. Most certainly, there will be an increase in this type of patient and risk factors in the Mexican population must still be determined to help predict the onset of GVHD., (Copyright © 2018 Asociación Mexicana de Gastroenterología. Publicado por Masson Doyma México S.A. All rights reserved.)

Objective: To study the association between aspects of mental health and the family context with tobacco experimentation and consumption among Brazilian schoolchildren., Method: A cross-sectional study using data from the National Survey of Schoolchildren's Health in Brazil conducted on 109,104 schoolchildren from the ninth year of elementary school, day scholars in public and private schools in all Brazilian state capitals and the Federal District. Descriptive analysis of variables, bivariate and multivariate analyses were performed with logistic regression estimates, adjusted for socioeconomic variables, obtaining the odds ratio (OR) and 95% confidence interval (95%CI)., Results: Among the participants, 52.2% were female. Twenty point nine percent of the students reported having experimented with cigarettes at least once. Adolescents who experienced more often feelings of loneliness (OR: 2.07; 95%CI: 1.98-2.16), difficulty sleeping (OR: 2.37; 95%CI: 2.52-2.48) and lower social interaction (OR: 1.27; 95%CI: 1.26-1.32), were more likely to smoke, regardless of socioeconomic status. The schoolchildren of parents or caregivers (OR: 2.39; 95%CI: 2.29-2.49) who did not know what their children did in their free time (OR: 1.52; 95%CI: 1.46-1.59) were associated with more frequent cigarette smoking., Conclusion: An association was seen between aspects of mental health and the family context with the experimentation and consumption of tobacco in adolescents enrolled in the study in Brazil. These associations are independent of school type, sex and skin colour. It is important that programmes for the prevention of tobacco use in adolescence emphasise these findings., (Copyright © 2017 SESPAS. Publicado por Elsevier España, S.L.U. All rights reserved.)

Aim: To know the neural processes linked to the activity of brain circuits in order to understand the consequences of their dysfunction and their role in the development of neurodevelopmental diseases, such as autistic spectrum disorders (ASD) and attention deficit hyperactivity disorder (ADHD)., Development: The activity of neuronal circuits is the neurobiological basis of behavior and mental activity (emotions, memory and thoughts). The processes of differentiation of neural cells and the formation of circuits by synaptic contacts between neurons (synaptogenesis) occur in the central nervous system during the late stages of prenatal development and the first months after birth. ASD and ADHD share biological features, mainly related to alterations in brain circuits and synaptic function, which allow us to treat them scientifically together. From the neurobiological aspect, ASD and ADHD are manifestations of anomalies in the formation of circuits and synaptic contacts in the brain regions involved in social behavior, and especially in the prefrontal cerebral cortex. These anomalies are caused by mutations in genes involved synaptogenesis and synaptic plasticity, regulation of dendritic spine morphology, synaptic cytoskeletal organization, synthesis and degradation of synaptic proteins, and control of excitatory and inhibitory balance in the synaptic function., Conclusions: ASD and ADHD are functional alterations of the cerebral cortex, which present structural anomalies in the arrangement of neurons, in the pattern of connections of cortical columns and in the structure of dendritic spines. These alterations affect mainly the prefrontal cortex and its connections.

Objective: To examine, in a non-diabetic population, whether the association between arterial stiffness and glycaemic levels depends on the test used as a glycaemic indicator, fasting plasma glucose (FPG) or glycated haemoglobin A1c (HbA1c)., Patient Population and Methods: A cross-sectional analysis of a 220 non-diabetic subsample from the EVIDENT II study in which FPG, HbA1c and arterial stiffness-related parameters (pulse wave velocity, radial and central augmentation index, and central pulse pressure) were determined. Mean differences in arterial stiffness-related parameters by HbA1c and FPG tertiles were tested using analysis of covariance., Results: All means of arterial stiffness-related parameters increased by HbA1c tertiles, although mean differences were only statistically significant in pulse wave velocity (p ≤.001), even after controlling for potential confounders (HbA1c <5.30% = 6.88 m/s; HbA1c 5.30%-5.59% = 7.06 m/s; and HbA1c ≥5.60% = 8.16 m/s, p =.004). Conversely, mean differences in pulse wave velocity by FPG tertiles did not reach statistically significant differences after controlling for potential confounders (FPG 4.44 mmol/l = 7.18 m/s; FPG 4.44 mmol/l-4.87 mmol/l = 7.26 m/s; and FPG ≥4.88 mmol/l = 7.93 m/s, p =.066)., Conclusions: Glucose levels in a non-diabetic population were associated with arterial stiffness but better when levels were determined using HbA1c., (Copyright © 2017 Elsevier España, S.L.U. All rights reserved.)

The giant cystic pheochromocytoma is a rare adrenal tumor in the predominantly asymptomatic course; so many cases are not diagnosed until the time of surgery. The simple mobilization of the tumor is associated with the passage to the blood of large amounts of catecholamines and high morbidity and mortality. So the surgery itself and perioperative management are a huge challenge. This article describes the case of a malignant giant pheochromocytoma (35 cm) which occupied the entire right abdomen. Even with the preoperative diagnosis of pheochromocytoma, pharmacological blockade preoperative and intraoperative measures, the patient died shortly before the end of surgery.

Introduction and Objectives: both, weight excess and thinness, are related with several health disorders that could continue into adulthood. The objectives of this study were to estimate the prevalence of thinness, overweight and obesity in 4-to-6-year-old schoolchildren in the provinces of Cuenca and Ciudad Real (Spain), using both the International Obesity Task Force and the World Health Organization criteria; and to compare this prevalence with those provided for other European studies., Methods: a cross-sectional study was performed in 1 585 schoolchildren in September 2013. Weight and height measurements were performed by previously trained nurses with standardized procedures. Weight status was defined according to the International Obesity Task Force and the World Health Organization criteria., Results: when the International Obesity Task Force criteria were used prevalence of thinness, overweight and obesity was 20.51%, 11.84% and 8.58%, respectively; and 3.97%, 13.92% and 10.79% when the World Health Organization criteria were utilized. No statistically significant differences by sex or province in any category of weight status were found. The prevalence of thinness decreased as age increases. Conversely, thinness prevalence decreased and overweight/obesity prevalence was significantly higher in older schoolchildren. The prevalence of overweight in this study is similar to other Mediterranean countries., Conclusions: the prevalence of overweight seems to level off, although it remains a public health priority. The increase in the prevalence of thinness has become an emergent problem that could claim for public health interventions., (Copyright AULA MEDICA EDICIONES 2014. Published by AULA MEDICA. All rights reserved.)

A case of Berardinelli-Seip syndrome, a congenital generalised lipodystrophy, is reported. Symptoms first appeared when the patient was 20 years old. She showed severe insulin resistance as well as micro- and macro-angiopathic complications, including chronic kidney disease, which required renal replacement therapy with peritoneal dialysis. The patient's clinical course was reviewed since paediatric age (when initial signs of the disease being already evident) to present time. Berardinelli-Seip syndrome is very uncommon, and the present case is particularly rare because it is the only case (at least as reported in the literature) in a patient receiving dialysis., (Copyright © 2015 Sociedad Española de Nefrología. Published by Elsevier España, S.L.U. All rights reserved.)

Introduction: As the level of cognitive impairment in people with dementia increases, it seems that the interventions aimed at this group do not obtain the expected results. Thus, it is clear that there is a need to develop specific assessment tools. One of the important aspects in people with dementia is the engagement, involvement in task and activities. Engagement is considered a quality of life and quality of care indicator. The aim of the study is to develop an Engagement recording tool for mapping people with dementia, and to obtain reliability measures., Method: The present paper aims to present the current development of engagement behaviours. The pilot study had a sample of 19 people distributed into two groups, which were observed in order to obtain inter-rater reliability measurements using the percentage of inter-rater agreement., Results: An observational mapping instrument was developed that achieved a high inter-rater reliability., Conclusion: The Engagement recording tool makes it possible to gather promising results on the effects of the interventions for people with severe dementia. On the other hand, these results point to the possibilities of more specific tools to assess the different interventions which aim is to improve quality of life and quality of care in people with dementia., (Copyright © 2012 SEGG. Published by Elsevier Espana. All rights reserved.)