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Functional food products remain the focus of current market trends toward healthier nutrition. The consumption of meat-based functional foods has been a topic of interest in food innovation since some of these products generate controversy due to their possible adverse effects on health. However, studies have demonstrated that meat-based functional products are considered an opportunity to improve the nutritional profile of meat products through the addition of biologically valuable components and to meet the specific needs of consumers. In this sense, some strategies and techniques are applied for processing and developing functional meat products, such as modifying carcass composition through feeding, reformulating meat products, and processing conditions. This review focuses on presenting developed and evaluated strategies that allow the production of healthy and functional meat foods, which application has successfully achieved the sensory, nutritional, and technological parameters mainly affected by such application.

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Introduction: In Eragrostis curvula, commonly known as weeping lovegrass, a synthetic diploidization event of the facultative apomictic tetraploid Tanganyika INTA cv. originated from the sexual diploid Victoria cv. Apomixis is an asexual reproduction by seeds in which the progeny is genetically identical to the maternal plant. Methods: To assess the genomic changes related to ploidy and to the reproductive mode occurring during diploidization, a mapping approach was followed to obtain the first E. curvula pangenome assembly. In this way, gDNA of Tanganyika INTA was extracted and sequenced in 2x250 Illumina pair-end reads and mapped against the Victoria genome assembly. The unmapped reads were used for variant calling, while the mapped reads were assembled using Masurca software. Results: The length of the assembly was 28,982,419 bp distributed in 18,032 contigs, and the variable genes annotated in these contigs rendered 3,952 gene models. Functional annotation of the genes showed that the reproductive pathway was differentially enriched. PCR amplification in gDNA and cDNA of Tanganyika INTA and Victoria was conducted to validate the presence/absence variation in five genes related to reproduction and ploidy. The polyploid nature of the Tanganyika INTA genome was also evaluated through the variant calling analysis showing the single nucleotide polymorphism (SNP) coverage and allele frequency distribution with a segmental allotetraploid pairing behavior. Discussion: The results presented here suggest that the genes were lost in Tanganyika INTA during the diploidization process that was conducted to suppress the apomictic pathway, affecting severely the fertility of Victoria cv.

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Despite the high prevalence of sports supplement (SS) use, efforts to profile users have not been conclusive. Studies report that 30-95% of recreational exercisers and elite athletes use SS. Research found has mostly focused on demographic and sports variables to profile SS users, but little research has studied the psychological factors that may influence the use of SS. The purpose of this investigation was to classify, describe, and differentiate the profile of users and non-users of SS, considering demographic, sports, and psychological variables. A total of 554 participants completed the questionnaire. Overall, 45% of recreational exercisers and elite athletes reported using supplements. There were significant differences found regarding the use of SS between men and women (51% vs. 49%, p = 0.002; OR = 1.799), and when training 4 or more days per week (p ≤ 0.001; OR = 1.526). Findings regarding the psychological variables have been found in the Adonis Complex. These results indicate that participants with greater concerns regarding physical appearance, tend to be SS users (p = 0.001; OR = 1.200). The results of this study fill a gap in previous research, and provide an approximate profile, including demographic, sports, and psychological variables of SS users.

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Weeping lovegrass (Eragrostis curvula [Shrad.] Nees) is a perennial grass typically established in semi-arid regions, with good adaptability to dry conditions and sandy soils. This polymorphic complex includes both sexual and apomictic cytotypes, with different ploidy levels (2x-8x). Diploids are known to be sexual, while most polyploids are facultative apomicts, and full apomicts have also been reported. Plant breeding studies throughout the years have focused on achieving the introgression of apomixis into species of agricultural relevance, but, given the complexity of the trait, a deeper understanding of the molecular basis of regulatory mechanisms of apomixis is still required. Apomixis is thought to be associated with silencing or disruption of the sexual pathway, and studies have shown it is influenced by epigenetic mechanisms. In a previous study, we explored the role of miRNA-mRNA interactions using two contrasting E. curvula phenotypes. Here, the sexual OTA-S, the facultative Don Walter and the obligate apomictic Tanganyika cDNA and sRNA libraries were inquired, searching for miRNA discovery and miRNA expression regulation of genes related to the reproductive mode. This allowed for the characterization of seven miRNAs and the validation of their miRNA-target interactions. Interestingly, a kinesin gene was found to be repressed in the apomictic cultivar Tanganyika, targeted by a novel miRNA that was found to be overexpressed in this genotype, suggestive of an involvement in the reproductive mode expression. Our work provided additional evidence of the contribution of the epigenetic regulation of the apomictic pathway.

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Eragrostis curvula (Schrad.) Ness is a grass with a particular apomictic embryo sac development called Eragrostis type. Apomixis is a type of asexual reproduction that produces seeds without fertilization in which the resulting progeny is genetically identical to the mother plant and with the potential to fix the hybrid vigour from more than one generation, among other advantages. The absence of meiosis and the occurrence of only two rounds of mitosis instead of three during embryo sac development make this model unique and suitable to be transferred to economically important crops. Throughout this review, we highlight the advances in the knowledge of apomixis in E. curvula using different techniques such as cytoembryology, DNA methylation analyses, small-RNA-seq, RNA-seq, genome assembly, and genotyping by sequencing. The main bulk of evidence points out that apomixis is inherited as a single Mendelian factor, and it is regulated by genetic and epigenetic mechanisms controlled by a complex network. With all this information, we propose a model of the mechanisms involved in diplosporous apomixis in this grass. All the genetic and epigenetic resources generated in E. curvula to study the reproductive mode changed its status from an orphan to a well-characterised species.

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DNA methylation is an epigenetic mechanism by which a methyl group is added to a cytosine or an adenine. When located in a gene/regulatory sequence it may repress or de-repress genes, depending on the context and species. Eragrostis curvula is an apomictic grass in which facultative genotypes increases the frequency of sexual pistils triggered by epigenetic mechanisms. The aim of the present study was to look for correlations between the reproductive mode and specific methylated genes or genomic regions. To do so, plants with contrasting reproductive modes were investigated through MCSeEd (Methylation Context Sensitive Enzyme ddRad) showing higher levels of DNA methylation in apomictic genotypes. Moreover, an increased proportion of differentially methylated positions over the regulatory regions were observed, suggesting its possible role in regulation of gene expression. Interestingly, the methylation pathway was also found to be self-regulated since two of the main genes (ROS1 and ROS4), involved in de-methylation, were found differentially methylated between genotypes with different reproductive behavior. Moreover, this work allowed us to detect several genes regulated by methylation that were previously found as differentially expressed in the comparisons between apomictic and sexual genotypes, linking DNA methylation to differences in reproductive mode.

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The complete mitogenome of Thoosa mismalolli Carballo, Cruz-Barraza & Gómez, 2004 (Tetractinellida, Thoosidae) was sequenced. This is the first complete mitogenome of the suborden Thoosina and the third Tetractinellid so far. The mitochondrial genome of T. mismalolli was assembled based on reads obtained with the Illumina HiSeq platform. The length of complete mitogenome is 19,019 bp long and contained 14 protein-coding genes and 23 tRNA, with two tRNA genes. Phylogenetic reconstruction (maximum-likelihood) based on mitogenome of Tetractinellids, supports T. mismalolli as a sister group. This result is congruent with those obtained with molecular markers (CO1, 18S, and 28S), supporting the monophyletic status of Thoosa and providing additional molecular data in favor of the suborder Thoosina.

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Eragrostis curvula presents mainly facultative genotypes that reproduce by diplosporous apomixis, retaining a percentage of sexual pistils that increase under drought and other stressful situations, indicating that some regulators activated by stress could be affecting the apomixis/sexual switch. Water stress experiments were performed in order to associate the increase in sexual embryo sacs with the differential expression of genes in a facultative apomictic cultivar using cytoembryology and RNA sequencing. The percentage of sexual embryo sacs increased from 4 to 24% and 501 out of the 201,011 transcripts were differentially expressed (DE) between control and stressed plants. DE transcripts were compared with previous transcriptomes where apomictic and sexual genotypes were contrasted. The results point as candidates to transcripts related to methylation, ubiquitination, hormone and signal transduction pathways, transcription regulation and cell wall biosynthesis, some acting as a general response to stress and some that are specific to the reproductive mode. We suggest that a DNA glycosylase EcROS1-like could be demethylating, thus de-repressing a gene or genes involved in the sexuality pathways. Many of the other DE transcripts could be part of a complex mechanism that regulates apomixis and sexuality in this grass, the ones in the intersection between control/stress and apo/sex being the strongest candidates.

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BACKGROUND: Weeping lovegrass (Eragrostis curvula [Shrad.] Nees) is a perennial grass found in semi-arid regions that is well adapted for growth in sandy soils and drought conditions. E. curvula constitutes a polymorphic complex that includes cytotypes with different ploidy levels (from 2x to 8x), where most polyploids are facultative apomicts, although both sexual reproduction and full apomixis have been reported in this species. Apomixis is thought to be associated with silencing of the sexual pathway, which would involve epigenetic mechanisms. However, a correlation between small RNAs and apomixis has not yet been conclusively established. RESULTS: Aiming to contribute to the elucidation of their role in the expression of apomixis, we constructed small RNA libraries from sexual and apomictic E. curvula genotypes via Illumina technology, characterized the small RNA populations, and conducted differential expression analysis by comparing these small RNAs with the E. curvula reference transcriptome. We found that the expression of two genes is repressed in the sexual genotype, which is associated with specific microRNA expression. CONCLUSION: Our results support the hypothesis that in E. curvula the expression of apomixis leads to sexual repression.

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A new species of caprellid, Deutella mazatlanensis n. sp., is described from Mazatlán Bay, (east Pacific México). Deutella mazatlanensis was found associated with bryozoans, hydroids and sponges in shallow waters. The new species can be differentiated from the remaining species of the genus mainly by the dorsal, anteriorly directed projection on the head; the two dorsal projections and a lateral acute projection anteroventrally projected on pereonite 2 and gnathopod 2 in males. The presence of this species on the Mexican Pacific coast, constitutes the fourth report of Deutella genus for the Pacific Ocean and the first record from the tropical Eastern Pacific.

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Eragrostis curvula (Schrad.) Nees (weeping lovegrass) is an apomictic species native to Southern Africa that is used as forage grass in semiarid regions of Argentina. Apomixis is a mechanism for clonal propagation through seeds that involves the avoidance of meiosis to generate an unreduced embryo sac (apomeiosis), parthenogenesis, and viable endosperm formation in a fertilization-dependent or -independent manner. Here, we constructed the first saturated linkage map of tetraploid E. curvula using both traditional (AFLP and SSR) and high-throughput molecular markers (GBS-SNP) and identified the locus controlling diplospory. We also identified putative regulatory regions affecting the expressivity of this trait and syntenic relationships with genomes of other grass species. We obtained a tetraploid mapping population from a cross between a full sexual genotype (OTA-S) with a facultative apomictic individual of cv. Don Walter. Phenotypic characterization of F1 hybrids by cytoembryological analysis yielded a 1:1 ratio of apomictic vs. sexual plants (34:27, X 2 = 0.37), which agrees with the model of inheritance of a single dominant genetic factor. The final number of markers was 1,114 for OTA-S and 2,019 for Don Walter. These markers were distributed into 40 linkage groups per parental genotype, which is consistent with the number of E. curvula chromosomes (containing 2 to 123 markers per linkage group). The total length of the OTA-S map was 1,335 cM, with an average marker density of 1.22 cM per marker. The Don Walter map was 1,976.2 cM, with an average marker density of 0.98 cM/marker. The locus responsible for diplospory was mapped on Don Walter linkage group 3, with other 65 markers. QTL analyses of the expressivity of diplospory in the F1 hybrids revealed the presence of two main QTLs, located 3.27 and 15 cM from the diplospory locus. Both QTLs explained 28.6% of phenotypic variation. Syntenic analysis allowed us to establish the groups of homologs/homeologs for each linkage map. The genetic linkage map reported in this study, the first such map for E. curvula, is the most saturated map for the genus Eragrostis and one of the most saturated maps for a polyploid forage grass species.

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Sponges are an important component of coral reef communities. The present study is the first devoted exclusively to coral reef sponges from Eastern Tropical Pacific (ETP). Eighty-seven species were found, with assemblages dominated by very small cryptic patches and boring sponges such as Cliona vermifera; the most common species in ETP reefs. We compared the sponge patterns from ETP reefs, Caribbean reefs (CR) and West Pacific reefs (WPR), and all have in common that very few species dominate the sponge assemblages. However, they are massive or large sun exposed sponges in CR and WPR, and small encrusting and boring cryptic species in ETP. At a similar depth, CR and WPR had seven times more individuals per m2, and between four (CR) and five times (WPR) more species per m2 than ETP. Perturbation, at local and large scale, rather than biological factors, seems to explain the low prevalence and characteristics of sponge assemblages in ETP reefs, which are very frequently located in shallow water where excessive turbulence, abrasion and high levels of damaging light occur. Other factors such as the recurrence of large-scale phenomena (mainly El Niño events), age of the reef (younger in ETP), isolation (higher in ETP), difficulty to gain recruits from distant areas (higher in ETP), are responsible for shaping ETP sponge communities. Such great differences in sponge fauna between the three basins might have consequences for coral reef structure and dynamics.

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Objetivo. Conocer las diferencias en los estilos educativos parentales percibidos por deportistas consumidores de tabaco y cánnabis. Método. La muestra fue de 502 deportistas españoles con una edad media de 27.76 (DE = 9.11). Para analizar los estilos educativos parentales se aplicó el Test Autoevaluativo Multifactorial de Adaptación Infantil (TAMAI); y para excluir del estudio a los participantes aquiescentes se utilizó la Escala de Oviedo de Infrecuencia de Respuesta (INF-OV). Se realizó un estudio descriptivo, transversal. La selección de la muestra se llevó a cabo en línea a través de Google Forms. Resultados. Los deportistas que no consumen tabaco (t = -2.53, p < 0.05) ni cánnabis (t = -3.26, p < 0.01) obtuvieron mayor proteccionismo del padre en la prueba t de student. Los deportistas consumidores de cánnabis, en cambio, obtuvieron mayor restricción del padre (t = 2.40, p < 0.05) en la prueba t de student. En la regresión logística binaria, se identificó una relación entre el no consumo de tabaco diario (OR = 0.39, p < 0.01) y el no consumo de cánnabis (OR = 0.74, p < 0.01) con el proteccionismo paterno. Conclusión. El proteccionismo paterno puede ser un factor protector en el consumo de tabaco y cánnabis en deportistas, mientras que la restricción paterna puede ser un factor que facilite el consumo de cánnabis.

Objective. To know the differences in perceived parental education styles according to athletes who are consumers of tobacco and cannabis. Method. The sample consisted of 502 athletes from Spain with an age range of 27.76 (DT = 9.11). In order to measure the parental education styles, the "Multifactor Self-Assessment Test of Child Adjustment" (TAMAI) was administered; to measure the acquiescence, the Oviedo Scale of Infrequency of Response (INF-OV)was administered. The study was a cross-sectional descriptive study and it was conducted online through Google Forms. Results. Athletes who do not consume tobacco (t = -2.53, p < 0.05) and cannabis (t = -3.26, p < 0.01) had greater levels of father protectionism in independent samples t test. Moreover, athletes who were cannabis consumers scored greater levels of father restriction (t = 2.40, p < 0.05) in independent samples t test. On the other hand, more father protectionism demonstrated a relationship with not consuming tobacco (OR = 0.39, p < 0.01) or cannabis (OR = 0.74, p < 0.00). Conclusion. The father protectionism could be a protective factor with regard to consumption of tobacco and cannabis in athletes. Furthermore, father restriction could be a negative factor that may increase cannabis consumption in athletes.

Escopo. Conhecer as diferencias nos estilos educativos parentais percebidos por desportistas consumidores de tabaco e cannabis. Metodologia. A amostra foi de 502 esportistas espanhóis com uma idade media de 27.76 (DE = 9.11). Para analisar os estilos educativos parentais foi aplicado o Test Auto-avaliativo Multifatorial de Adaptação Infantil (TAMAI); e para excluir do estudo aos participantes aquiescentes foi utilizada a escada de Oviedo de Infrequência de Resposta (INF-OV). Foi realizado um estudo descritivo, transversal e a seleção da amostra foi feita em linha a través de Google Forms. Resultados. Os esportistas que não consumem tabaco (t = -2.53, p < 0.05) nem cannabis (t = -3.26, p < 0.01), obtiveram maior protecionismo do pai na prova t de student . Os esportistas consumidores de cannabis, em troca, obtiveram maior restrição do pai (t = 2.40, p < 0.05) na prova t de student. Na regressão logística binária, foi identificada uma relação entre o não consumo de tabaco diário (OR = 0.39, p < 0.01) e o não consumo de cannabis (OR = 0.74, p < 0.01) com o protecionismo paterno. Conclusão. O protecionismo paterno pode ser um fator protetor no consumo de tabaco e cannabis em esportistas, enquanto que a restrição paterna pode ser um fator que facilite o consumo de cannabis.

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Excavating sponges are one of the main groups of bioeroders in coral reefs. Their diversity has been thoroughly studied in some regions: in the Caribbean, the Mediterranean, and the Indo-Pacific, including the Mexican Pacific. However, there is a lack of information from the Pacific of Central America, with only a few records from Panama and Costa Rica. This study provides additional distributional records and taxonomic descriptions of species collected between 2011 and 2016 at nine localities along the Pacific coast of El Salvador, Nicaragua, Costa Rica and Panama. A total of fourteen species of excavating sponges from three orders, three families, and five genera are considered valid in this area. Nine are new records for Central America, six are new records for El Salvador, three are new records for Nicaragua and eleven are new records for Costa Rica. The species collected from Panama were already recorded before. The species here described are Cliona amplicavata, Cliona californiana, Cliona euryphylle, Cliona microstrongylata, Cliona aff. mucronata, Cliona pocillopora, Cliona tropicalis, Cliona vermifera, Cliothosa tylostrongylata, Pione cf. carpenteri, Pione mazatlanensis, Thoosa calpulli, Thoosa mismalolli and Siphonodictyon crypticum. We also reviewed the literature related to excavating sponges from Central America, and the taxonomic status of respective species was updated. We provide a faunistic record of 14 excavating sponge species for Central America. Our data are expected to be useful for management and conservation purposes.

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A long-standing goal in plant breeding has been the ability to confer apomixis to agriculturally relevant species, which would require a deeper comprehension of the molecular basis of apomictic regulatory mechanisms. Eragrostis curvula (Schrad.) Nees is a perennial grass that includes both sexual and apomictic cytotypes. The availability of a reference transcriptome for this species would constitute a very important tool toward the identification of genes controlling key steps of the apomictic pathway. Here, we used Roche/454 sequencing technologies to generate reads from inflorescences of E. curvula apomictic and sexual genotypes that were de novo assembled into a reference transcriptome. Near 90% of the 49568 assembled isotigs showed sequence similarity to sequences deposited in the public databases. A gene ontology analysis categorized 27448 isotigs into at least one of the three main GO categories. We identified 11475 SSRs, and several of them were assayed in E curvula germoplasm using SSR-based primers, providing a valuable set of molecular markers that could allow direct allele selection. The differential contribution to each library of the spliced forms of several transcripts revealed the existence of several isotigs produced via alternative splicing of single genes. The reference transcriptome presented and validated in this work will be useful for the identification of a wide range of gene(s) related to agronomic traits of E. curvula, including those controlling key steps of the apomictic pathway in this species, allowing the extrapolation of the findings to other plant species.

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OBJECTIVE: Few cross-cultural studies have investigated the self-change process with substance abusers. This study examined commonalities and differences related to the self-change process with Spanish speaking self-changers in Spain and the United States (U.S.) who reported recovering from an alcohol or drug problem on their own (i.e., without formal help or treatment) for ≥1 year. METHOD: Advertisements were primarily used to recruit participants. There were 56 participants in the final sample (Spain, n=29; US; n=27). Participants provided demographic and substance use history information and completed the Drug Use History Questionnaire, Reasons for Change Scale, the Life Events Checklist, and a checklist for maintenance factors after recovery. RESULTS: Significantly more self-changers from the U.S. met DSM IV-TR criteria for alcohol dependence, reported significantly more life events in the year prior to recovery and significantly more maintenance/support events in the year after their recovery than their counterparts in Spain. The majority of participants' recoveries involved abstinence. Some alcohol abusers, however, report successfully engaging in low-risk drinking with no consequences(50% Spain; 22% U.S.), and some drug abusers in Spain (23%) reported a few days per year of very little drug use. CONCLUSIONS: The two groups of Spanish speakers represented very different cultures, and those from the U.S. came from several countries in the Southern hemisphere. The results of this study suggest that even though people speak the same language that does not mitigate against cultural differences. Additional studies of the process of self change with larger participant samples are needed to better inform the development and provision of interventions for Spanish speakers with alcohol and drug use disorders across different cultures and countries.

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Los programas de prevención del rechazo social en la infancia son todavía muy escasos. El objetivo de este estudio fue evaluar los efectos de un programa de intervención cognitivo-conductual breve basado en el desarrollo de competencias socio-emocionales, diseñado para prevenir el rechazo social infantil y patologías asociadas. Para ello se siguió un diseño cuasiexperimental pretest-postest con grupo control no equivalente. La muestra se compuso de 94 estudiantes de 8 a 12 años. El tratamiento consistió en un programa multicomponente cognitivo-conductual aplicado en grupo, con una frecuencia semanal y un total de 6 sesiones de 60 minutos cada una. Los resultados apoyaron la eficacia del programa de desarrollo de competencias infantil, obteniendo efectos positivos en las medidas de ansiedad, depresión, inteligencia emocional y estatus social del sociograma. Estos datos muestran la eficacia y necesidad de prevenir la aparición del rechazo social y patologías asociadas en la infancia en el contexto escolar.

Prevention programs for social rejection in children are still scarce. The aim of this study was to determine the effectiveness of a cognitive-behavioral intervention program, based on development of socio-emotional competencies, designed to prevent child social rejection and associated diseases. We followed a pretest-posttest non-equivalent control group quasi-experimental design. The sample consisted of 94 students between 8 and 12 years. Treatment consisted of a multicomponent cognitive-behavioral program, administered on a group basis, with one weekly session lasting 60 minutes each one, for a total of 6 sessions. The results supported the effectiveness of skill development program for children, showing positive treatment effects on measures of anxiety, depression, emotional intelligence and social status by sociogram. These data show the effectiveness and need of preventing the emergence of childhood social rejection and associated diseases in school setting.

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Integrative taxonomy provides a major approximation to species delimitation based on integration of different perspectives (e.g. morphology, biochemistry and DNA sequences). The aim of this study was to assess the relationships and boundaries among Eastern Pacific Aplysina species using morphological, biochemical and molecular data. For this, a collection of sponges of the genus Aplysina from the Mexican Pacific was studied on the basis of their morphological, chemical (chitin composition), and molecular markers (mitochondrial COI and nuclear ribosomal rDNA: ITS1-5.8-ITS2). Three morphological species were identified, two of which are new to science. A. clathrata sp. nov. is a yellow to yellow-reddish or -brownish sponge, characterized by external clathrate-like morphology; A. revillagigedi sp. nov. is a lemon yellow to green, cushion-shaped sometimes lobate sponge, characterized by conspicuous oscules, which are slightly elevated and usually linearly distributed on rims; and A. gerardogreeni a known species distributed along the Mexican Pacific coast. Chitin was identified as the main structural component within skeletons of the three species using FTIR, confirming that it is shared among Verongida sponges. Morphological differences were confirmed by DNA sequences from nuclear ITS1-5.8-ITS2. Mitochondrial COI sequences showed extremely low but diagnostic variability for Aplysina revillagigedi sp. nov., thus our results corroborate that COI has limited power for DNA-barcoding of sponges and should be complemented with other markers (e.g. rDNA). Phylogenetic analyses of Aplysina sequences from the Eastern Pacific and Caribbean, resolved two allopatric and reciprocally monophyletic groups for each region. Eastern Pacific species were grouped in general accordance with the taxonomic hypothesis based on morphological characters. An identification key of Eastern Pacific Aplysina species is presented. Our results constitute one of the first approximations to integrative taxonomy, phylogeny and evolutionary biogeography of Eastern Pacific marine sponges; an approach that will significantly contribute to our better understanding of their diversity and evolutionary history.

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Introducción: El empleo se solución salina normal, ligeramente hipertónica respecto al plasma, puede incrementar el gradiente osmótico y reducir los líquidos en órganos macizos (cerebro, hígado, corazón, riñones), pero también puede producir alteraciones en el balance hidroelectrolítico y acido-básico. Objetivo: Determinar el comportamiento hidroelectrolítico y ácido básico en el paciente neuroquirúrgico con el empleo de soluciones salinas con diferente grado de tonicidad. Material y método: Se realizó un estudio comparativo, observacional y transversal en 24 pacientes tratados quirúrgicamente de forma intracraneal electiva, en el periodo comprendido de enero a junio del 2009, en el Hospital «Manuel Ascunce Domenech¼ de Camagüey. Los pacientes se asignaron aleatoriamente en tres grupos, con 8 pacientes cada uno. En el primero se empleó como solución de mantenimiento cloruro de sodio al 0,9 %, en el segundo cloruro de sodio al 1.1 % y en el tercero solución salina al 1.3 %, en todos los pacientes se empleo la misma técnica neuroanestésica. Las variables utilizadas fueron las determinaciones séricas de electrolitos sodio, potasio y cloro, la osmolaridad plasmática, ph, PaCO2, y bicarbonato estándar, expresándose los resultados en tabla. Resultados: La osmolaridad sérica y los electrolitos mesurados se mantuvieron dentro de parámetros normales en la mayoría de los pacientes. La alcalosis respiratoria presente no estuvo en relación con el uso de las soluciones de cloruro de sodio, sino con la hiperventilación. Conclusiones: Con el empleo de las tres soluciones no existieron desórdenes importantes del equilibrio hidroelectrolítico y acido base, en la mayoría de los pacientes.

Introduction: Use of normal saline solution slightly hypertonic regarding the plasma, may to increase the osmotic gradient and to reduce the presence of fluids in solid organs (brain, liver, heart, kidneys) but also may to produce alterations in hydroelectrolytic and acid-base balance. Objective: To determine the hydroelectrolytic and acid-base behavior related to use of saline solutions with different tonicity degree. Material and Method: A cross-sectional, observational and comparative study was conducted in 24 patients underwent elective intracranial surgery from January to June, 2009 in "Manuel Ascunce Domenech" Hospital of Camagüey province. In the first patient as maintenance solution we used 0,9% sodium chloride, in the second one 1.1% sodium chloride and in the third we used 1.3% saline solution; in all patients the same neuroanesthesia technique was applied. Variables used included the serum electrolytes determinations of sodium, potassium and chlorine, plasma osmolarity, pH, PaCO2 and standard bicarbonate. Results are expressed in table. Results: Serum osmolarity and restrained electrolytes remained within the normal parameters in most of patients. Respiratory alkalosis present hasn't relation to the use of sodium chloride solutions, but the hyperventilation. Conclusions: With use of the three solutions there weren't significant disturbances of hydroelectrolytic and acid-base equilibrium in most of patients.

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Natural products with promising biomedical properties have been described from sponges, but the problem of supply is usually a limiting factor for their pharmacological evaluation. Mycale cecilia produces an array of metabolites containing a pyrrole-2-carbaldehyde moiety (e.g., mycalazals and mycalenitriles) that have shown activity as growth inhibitors of the human prostate carcinoma cell line LNcaP. This study shows that the culture of M. cecilia is a viable method to supply mycalazals while protecting the wild population. Small implants were bound to ceramic tiles, and after 3 to 4 days, the tissue samples formed a secure attachment. Subsequently, these explants were simultaneously cultured in their natural environment and in small tanks for 60 days. Sponges in the tanks were fed a diet consisting of a mixture of two microalgae (Tetraselmis sp. and Isochrysis sp.) and powdered yeast Saccharomyces cerevisiae. The final survival of the explants differed significantly between the two farming methods: It was higher in the natural environment (95 ± 7.07%; overall mean ± standard error) than in the enclosed system (65 ± 21.21%). Growth was also higher than in the tanks, and after 60 days, it increased to 207% in the sea and 65% in the tanks, which represented a daily increase of 3.5% and 1.5%, respectively. At the end of the trial, both the explants cultured in the sea and in the tanks retained the production of bioactive metabolites. The mean concentration of pyrrole-2-carbaldehyde derivatives in wild and cultured sponges was determined by (1)H-NMR. These results demonstrate that in-sea aquaculture of M. cecilia is a viable method for supplying the amounts of mycalazal-type compounds needed to advance the studies on their bioactivity.

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