Crude Extracts of Pleurotus Spp. and the Presence of Their Proteins in the Ovicidal and Larvicidal Activity of Haemonchus contortus.

Mushrooms of the genus Pleurotus have shown nematophagous activity as it produces many chemical compounds and enzymes affecting parasitic nematodes. This study aimed to extract the inhibitory activity of the five strains of the fungus Pleurotus spp. It was evaluated against eggs and larvae of Haemonchus contortus. The extract of P. ostreatus obtained the highest level of inhibition of eggs at 97.6% (1341 µg/mL) followed by P. pulmonarius (EPP) at 81.2% (774 µg/mL). The extract selected for evaluation against larvae was P. pulmonarius, showing no effect for L3 larvae, but for L4 larvae an immobility effect of 56.93% was observed at 900 µg/mL. The protein profile showed the presence of 23 protein bands in the extract. The crude extract of P. pulmonarius showed degradation of tissues both inside the eggs and larvae L1. Metabolites produced by Pleurotus mushrooms can consider using in agriculture sustainable by utilizing in producing of ovicidal and larvicidal against H. contortus instead of chemical compounds.

A comprehensive review of genetic causes of obesity.

BACKGROUND: Obesity is a multifactorial chronic disease with a high, increasing worldwide prevalence. Genetic causes account for 7% of the cases in children with extreme obesity. DATA SOURCES: This narrative review was conducted by searching for papers published in the PubMed/MEDLINE, Embase and SciELO databases and included 161 articles. The search used the following search terms: "obesity", "obesity and genetics", "leptin", "Prader-Willi syndrome", and "melanocortins". The types of studies included were systematic reviews, clinical trials, prospective cohort studies, cross-sectional and prospective studies, narrative reviews, and case reports. RESULTS: The leptin-melanocortin pathway is primarily responsible for the regulation of appetite and body weight. However, several important aspects of the pathophysiology of obesity remain unknown. Genetic causes of obesity can be grouped into syndromic, monogenic, and polygenic causes and should be assessed in children with extreme obesity before the age of 5 years, hyperphagia, or a family history of extreme obesity. A microarray study, an analysis of the melanocortin type 4 receptor gene mutations and leptin levels should be performed for this purpose. There are three therapeutic levels: lifestyle modifications, pharmacological treatment, and bariatric surgery. CONCLUSIONS: Genetic study technologies are in constant development; however, we are still far from having a personalized approach to genetic causes of obesity. A significant proportion of the affected individuals are associated with genetic causes; however, there are still barriers to its approach, as it continues to be underdiagnosed. Video Abstract (MP4 1041807 KB).

Bio-directed Chemical Study of Pleurotus ostreatus Spent Substrate and Its Nematicidal Activity.

PURPOSE: In the present study, the nematicidal activity of the chemical fractionation of the spent substrate of the edible mushroom Pleurotus ostreatus against eggs and L3 larvae of Haemonchus contortus was evaluated. METHODS: The hydroalcoholic extract of the spent substrate was subjected to a bipartition with ethyl acetate giving two fractions: one aqueous (F. Ac) and one organic (F. AcOET). Both fractions were evaluated against eggs and L3 larvae at different concentrations (5, 2.5, 1.25, 0.625 and 0.3125 mg/mL) and 2% methanol, PBS and thiabendazole (5 mg/mL) as controls. Chemical fractionation of F. AcOET was performed in open column chromatography where 76 fractions were obtained and when analyzed by thin layer chromatography (TLC) were grouped into 11 mixtures (R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11). These mixtures were evaluated at 10 mg/mL against eggs and L3 larvae. The data obtained were analyzed by ANOVA and a Tukey test in the SAS V9 program. RESULTS: The results showed that, in the evaluation of F. AcOET and F. Ac, for the inhibition of egg hatching, the highest percentages were 78.80 and 76.89% at 5 mg/mL, respectively. As for the percentage of larval mortality, F. AcOET obtained 60.91 and F. Ac 29.77% at 5 mg/mL. The results of the evaluations of the mixtures showed that mixtures R4, R5 obtained 100 and 95.41% larval mortality and mixtures R6 and R7 presented 100% inhibitory activity of egg hatching, so these were analyzed by gas chromatography mass spectrometry finding compounds such as vanillin, ß-sitosterol, ρ-methyl ρ-hydroxycinnamate and ρ-hydroxybenzaldehyde. CONCLUSION: The results of the present study demonstrate that the spent substrate of P. ostreatus has potential anthelmintic activity against H. contortus. Moreover, by reusing and taking advantage of this substrate, its environmental pollution effects can be reduced.

Vínculo madre/hija y su relación con insatisfacción corporal, modelos estéticos y conductas alimentarias / Mother/daughter attachment and its relationship with body dissatisfaction, aesthetic models and eating behaviors

Resumen Se analizó la percepción de conductas y actitudes maternas en las hijas y sus niveles de satisfacción corporal, conducta alimentaria e influencia de modelos estéticos corporales. Se utilizó un enfoque cuantitativo, transversal, intencional, no probabilístico y de bola de nieve. Veintidós díadas madre/hija (n=44) completaron el IVP, CFC, CIMEC y E-TONA. Se efectuó un análisis estadístico descriptivo, cálculo de porcentajes y coeficientes de correlación mediante el programa SPSS. Las hijas percibieron principalmente un control materno sin afecto (31,8%); en el 18,2% ambas efectuaban dieta; 40,9% de las hijas versus 22,7% de las madres mostró alteración del esquema corporal, exhibiendo malestar, en el 63,6% (hijas) versus 45,5% (madres). La sobreprotección materna percibida por las hijas fue estadísticamente significativa (r=,513; p=,015). Los niveles de satisfacción corporal en ellas (r =,694; p=,000), la preocupación ponderal (r=,612; p=,002) y la imagen corporal (r=,707; p=,000), se correlacionaron directa y significativamente con los maternos y con agentes y situaciones que difunden el modelo estético de sus madres (r=,544; p=,009 y r=,625; p=,001, respectivamente). Se observó la percepción por las hijas de un control materno sin afecto con sobre-preocupación, además de alteración del esquema corporal de madres e hijas y una significativa influencia de modelos estéticos corporales.

Perception of maternal behaviors and attitudes in daughters and their levels of body satisfaction, eating behavior and influence of body aesthetic models were analysed. A quantitative, cross-sectional, intentional, non-probabilistic and snowball approach was used. Twenty-two mother/daughter dyads (n = 44) completed the PBI, BSQ, CIMEC and E-TONA. A descriptive statistical analysis, calculation of percentages and correlation coefficients were carried out using the SPSS programme. Daughters mainly perceived maternal control without affection (31.8%); in 18.2% both were on a diet; 40.9% of daughters versus 22.7% of mothers showed alteration of body scheme, exhibiting discomfort, in 63.6% and 45.5%, respectively. Maternal overprotection perceived by daughters was statistically significant (r =0.513, p = 0.015). Levels of body satisfaction in daughters (r = 0.694; p =0.000), weight concern (r =0.612; p =0.002) and body image (r =0.707; p =0.000), were correlated directly and significantly with those of mothers and with agents and situations that broadcast the aesthetic model of their mothers (r =0.544, p =0.009 and r =0.625, p =0.001, respectively). Daughters´ perception of a maternal control without affect with over-concern was observed, in addition to alteration of body scheme in mothers and daughters and a significant influence of body aesthetic models.

Novel associative processing and aging: effect on creative production.

Creative production has been reported to decline with age. This study investigated age-related differences in creative verbal production. Participants were 30 younger and 30 older adults. Study testing included language and cognitive assessments and the experimental task wherein participants created short stories incorporating words that are not commonly related, semantically or associatively. The resulting stories were rated by independent blinded judges for originality, cohesion, appropriateness, and organization. Younger adults' stories were rated as being significantly more original and more appropriate. Integrating unrelated words to create original stories requires activating widely distributed lexical-semantic networks to develop novel associations. Potential decreased neural network connectivity due to white matter degradation, commonly seen in normal aging, as well as decrements in front-executive disengagement may have affected older adults' performance on this story creation task. Future research using neuroimaging may elucidate possible neuroanatomic correlates of age-related changes in associative creative production..

Actualización en sepsis y choque séptico en adultos / Update on Sepsis and Septic Shock in Adults / Atualização sobre sepse e choque séptico em adultos

Introducción. La sepsis se define como una disfunción multiorgánica secundaria a un proceso infeccioso que puede progresar a choque séptico con aumento en el riesgo de mortalidad. Recientes actualizaciones de Sepsis nos permiten realizar un diagnóstico precoz y abordaje terapéutico oportuno con disminución de la morbimortalidad a corto y mediano plazo. División de los temas tratados. Se realizó una revisión bibliográfica no sistemática en bases de datos y bibliotecas electrónicas (PubMed, Cochrane, Lilacs) que incluyó artículos en inglés y español desde 2005 hasta 2018 que contuvieran los tópicos de interés. Se realizó una descripción detallada de la definición de sepsis y choque séptico, clasificación, fisiopatología, diagnóstico, monitorización hemodinámica y tratamiento. Conclusiones. La sepsis es una urgencia médica con una alta tasa de mortalidad que requiere de un diagnóstico oportuno, el cual se puede realizar por medio del puntaje del SOFA (Sepsis Related Organ Failure Assessment), y el inicio rápido de tratamiento antibiótico empírico y reanimación guiada por metas, ya que son medidas que han demostrado disminuir los desenlaces fatales. Cómo citar. Laguado-Nieto MA, Amaris-Vergara AA, Vargas-Ordóñez JE, Rangel-Vera JA, García-León SJ, Centeno-Hurtado KT. Actualización en sepsis y choque séptico en adultos. MedUNAB. 2019;20(2):213-227. doi:10.29375/01237047.3345

Introduction. Sepsis is defined as a multiple organ dysfunction secondary to an infectious process that can progress to septic shock, increasing the risk of mortality. Recent findings pertaining to Sepsis allow us to perform early diagnoses and timely therapeutic treatments with short and medium-term reductions in mortality. Division of Covered Topics. Non-systematic literary research was conducted in databases and digital libraries (PubMed, Cochrane, Lilacs), including articles in English and Spanish from 2005 to 2018 that included the topics of interest. A detailed description was made of the definition of sepsis and septic shock, their classification, physiopathology, diagnosis, hemodynamic monitoring and treatment. Conclusions. Sepsis is a medical emergency with a high mortality rate that requires a timely diagnosis. The diagnosis can be performed with the Sepsis Related Organ Failure Assessment (SOFA) score, and quickly beginning empirical antibiotic treatment and reanimation guided by goals, as these measures have shown a reduction in fatal outcomes. Cómo citar. Laguado-Nieto MA, Amaris-Vergara AA, Vargas-Ordóñez JE, Rangel-Vera JA, García-León SJ, Centeno-Hurtado KT. Actualización en sepsis y choque séptico en adultos. MedUNAB. 2019;20(2):213-227. doi:10.29375/01237047.3345

Introdução. A sepse é definida como uma disfunção de múltiplos órgãos, secundária a um processo infeccioso que pode evoluir para choque séptico com risco aumentado de mortalidade. Atualizações recentes da sepse nos permitem fazer um diagnóstico precoce e uma abordagem terapêutica oportuna, com diminuição da morbidade e mortalidade a curto e médio prazo. Divisão dos temas abordados. Foi realizada uma revisão bibliográfica não sistemática em bases de dados e bibliotecas eletrônicas (PubMed, Cochrane, Lilacs) incluindo artigos em inglês e espanhol de 2005 a 2018, que continham os tópicos de interesse. Foi realizada uma descrição detalhada da definição da sepse e choque séptico, classificação, fisiopatologia, diagnóstico, monitorização hemodinâmica e tratamento. Conclusões. A sepse é uma emergência médica com uma alta taxa de mortalidade que requer um diagnóstico oportuno, que pode ser feito através do escore SOFA (Sepsis Related Organ Failure Assessment); o início rápido do tratamento antibiótico empírico e a ressuscitação guiada por metas, já que são medidas que demonstraram reduzir os resultados fatais. Cómo citar. Laguado-Nieto MA, Amaris-Vergara AA, Vargas-Ordóñez JE, Rangel-Vera JA, García-León SJ, Centeno-Hurtado KT. Actualización en sepsis y choque séptico en adultos. MedUNAB. 2019;20(2):213-227. doi:10.29375/01237047.3345

Cognitive-motor dysfunction after severe traumatic brain injury: A cerebral interhemispheric disconnection syndrome.

BACKGROUND/OBJECTIVES: In most right-handed people, the left hemisphere is dominant for programming the temporal and spatial "how" (praxis) aspects of purposeful skilled movements, and the right hemisphere is dominant for control of the intentional "when" aspects of actions that mediate initiation, persistence, termination, and inhibition. Since the interhemispheric axons of the corpus callosum are especially susceptible to shearing from torsional forces during traumatic brain injury (TBI), the goal of this study was to learn whether participants with a history of severe traumatic brain injury demonstrate three types of cognitive-motor impairments that may result from callosal injury: ideomotor apraxia of the left hand, limb kinetic apraxia of the left hand, and hypokinesia of the right hand in response to left hemispatial stimuli. METHOD: Nine participants with severe TBI and nine healthy control participants were studied for the presence of ideomotor apraxia, limb kinetic apraxia, and hypokinesia. RESULTS: When compared to the control participants, the participants with TBI revealed ideomotor apraxia and limb kinetic apraxia of the left hand and hypokinesia in response to left-sided visual stimuli when tested with the right hand. CONCLUSIONS: TBI appears to cause unilateral disorders of cognitive-motor functions. Future research is needed to understand how these cognitive-motor disorders are related to interhemispheric disconnection most likely induced by injury to the corpus callosum.

Divergent Task Performance in Older Adults: Declarative Memory or Creative Potential?

Divergent thinking is the ability to produce a range of responses or solutions and is an element of creative processing. Divergent thinking requires disengagement, the ability to associate between words or ideas, and the production of responses. Lesion and imaging studies have shown frontal-lobe involvement for these activities, and frontal lobe function is highly dependent on white matter pathways. Normal aging often results in deficits in functions controlled by the frontal lobes as well as decrements in white matter connectivity. The objectives of this study were to compare non time-constrained tasks of verbal divergent processing in young adults (YAs) and older adults (OAs) and correlate performance with tasks of working memory, language ability, and disengagement/inhibition. Participants were 30 YAs and 30 OAs. Contrary to the a priori hypothesis, OAs produced significantly more unique responses than YAs, although total fluency was not significantly different. Correlational analyses examining the groups together and separately revealed a number of differences suggesting that the groups were utilizing different underlying cognitive abilities to complete these tasks. The authors propose that the primary factor resulting in higher uniqueness scores for the OAs was a greater wealth of experience as well as longer exposure to language use.

Errorless practice as a possible adjuvant to donepezil in Alzheimer's disease.

Six individuals with probable Alzheimer's disease (AD) participated in a phase 1 study employing a repeated measures, parallel baseline design testing the hypothesis that error-free experience during word production practice combined with an acetyl cholinesterase inhibitor would improve confrontation naming ability. While acetyl cholinesterase inhibitors are safe and delay cognition decline associated with AD, improvement over baseline cognition is less evident; clinically significant cognitive deficits persist and progress. Both animal and clinical research strongly implicate acetylcholine in learning, a form of neuroplasticity. In clinical practice, however, people with AD are given cholinergic medications without concomitant systematic/targeted retraining. In this study six participants with probable AD and taking donepezil participated in targeted word production practice using an errorless learning strategy. Results showed that combining behavioral enrichment training and an acetyl cholinesterase inhibitor resulted in significant improvements in verbal confrontation naming of trained items for three of six participants. Differences in baseline dementia severity, living conditions, and medications may have influenced the training response. Detection of substantial treatment effects in 50% of subjects suggests further language treatment studies in AD in combination with an acetyl cholinesterase inhibitor are warranted and provide useful information on inclusion/exclusion criteria for use in subsequent studies.

Treatment of naming in nonfluent aphasia through manipulation of intention and attention: a phase 1 comparison of two novel treatments.

Twenty-three chronic nonfluent aphasia patients with moderate or severe word-finding impairments and 11 with profound word-finding impairments received two novel picture-naming treatments. The intention treatment initiated picture-naming trials with a complex left-hand movement and was designed to enhance right frontal participation during word retrieval. The attention treatment required patients to view visual stimuli for picture-naming trials in their left hemispace and was designed to enhance right posterior perisylvian participation during word retrieval. Because the intention treatment addressed action mechanisms and nonfluent aphasia reflects difficulty initiating or maintaining action (i.e., language output), it was hypothesized that intention component of the treatment would enhance re-acquisition of picture naming more than the attention component. Patients with moderate and severe word-finding impairment showed gains with both treatments but greater incremental improvement from one treatment phase to the next with the intention than the attention treatment. Thus, the hypothesis that intention component would be a more active constituent than the attention component was confirmed for these patients. Patients with profound word-finding impairment showed some improvement with both treatments but no differential effects for the intention treatment. Almost all patients who showed treatment gains on either treatment also demonstrated generalization from trained to untrained items.

A pilot study of use-dependent learning in the context of Constraint Induced Language Therapy.

This investigation reports the results of a pilot study concerning the application of principles of use-dependent learning developed in the motor rehabilitation literature as Constraint Induced Therapy to language rehabilitation in a group of individuals with chronic aphasia. We compared treatment that required forced use of the language modality, Constraint Induced Language Therapy, (CILT) to treatment allowing all modes of communication. Both treatments were administrated intensively in a massed practice paradigm, using the same therapeutic stimuli and tasks. Results suggest that whereas both interventions yielded positive outcomes, CILT participants showed more consistent improvement on standard aphasia measures and clinician judgments of narrative discourse. These findings suggest that CILT intervention may be a viable approach to aphasia rehabilitation.

Effects of two treatments for aprosodia secondary to acquired brain injury.

Expressive aprosodia is an impaired ability to change one's voice to express common emotions such as joy, anger, and sadness. Individuals with aprosodia speak in a flat, unemotional voice that often results in miscommunicated emotional messages. This study investigated two conceptually based treatments for expressive aprosodia: imitative treatment and cognitive-linguistic treatment. Five women and nine men with expressive aprosodia following right-hemisphere brain damage received the treatments in two phases 1 month apart in random order. Treatment was received 3 to 4 days a week for a total of 20 sessions each phase. As the outcome measure, sentences that elicited treated (happy, angry, sad, neutral) and untreated (fear) emotional tones of voice were administered during baseline, prior to treatment sessions, following treatment termination, and at 1- and 3-month follow-ups. Effect sizes indicated that treatment effects were modest to substantial and that 12 participants responded to at least one treatment. Four responsive participants who were available for follow-up showed benefit at 1 and 3 months posttreatment. Most visual and statistical analyses were congruent.

Active treatments for aprosodia secondary to right hemisphere stroke.

This study investigates the effects of two mechanism-based treatments for expressive aprosodia. Three participants, two women and one man, had a right hemisphere cerebral infarction resulting in affective aprosodia with greater expressive than receptive deficits. Trained raters determined presence of aprosodia by judging participants' performance on two emotional communication batteries. A single-subject design with replication across three participants was employed. Sentence production with the use of treated and nontreated emotions was measured during baseline and treatment phases. Sentences were scored for accuracy by a trained rater blind to time of testing and analyzed visually and statistically. Effect sizes calculated on the resulting data for each participant and treatment confirmed modest to substantial treatment effects for both treatments in all three participants. Because of a relative paucity of treatment studies investigating expressive aprosodia, these data are among the first to suggest that aprosodia may be amenable to behavioral treatments.

Novel treatments for expressive aprosodia: a phase I investigation of cognitive linguistic and imitative interventions.

This study investigated two mechanism-based treatments for expressive aprosodia, a disturbance in emotional prosody thought to be governed by the right hemisphere. The 3 participants all suffered right CVA's resulting in expressive aprosodia. Presence of expressive aprosodia was determined by performance on two batteries of emotional communication. A single subject ABAC design was employed in which two treatments, one imitative and one cognitive linguistic, were assigned in random order. All participants in this study were randomly assigned to begin with the cognitive linguistic treatment. Probes of treated and untreated emotions were completed during baseline and therapy phases. Probe items were judged by a reliable, trained rater blind to time of testing. Visual and statistical analyses were completed. These analyses confirmed that both treatments were active. For example, effect size calculations confirmed modest to substantial treatment effects for both treatments in all 3 patients. Replication to increase confidence about treatment effect and enhance understanding of the neuromechanisms underlying aprosodia is underway.

Affective aprosodia from a medial frontal stroke.

BACKGROUND AND OBJECTIVES: Whereas injury to the left hemisphere induces aphasia, injury to the right hemisphere's perisylvian region induces an impairment of emotional speech prosody (affective aprosodia). Left-sided medial frontal lesions are associated with reduced verbal fluency with relatively intact comprehension and repetition (transcortical motor aphasia), but persistent affective prosodic defects associated with right medial frontal lesions have not been described. METHODS: We assessed the prosody of a man who sustained a right medial frontal cerebral infarction seven years prior. RESULTS: While propositional speech expression was normal including syntactic prosody, the patient was impaired at expressing emotions using prosody. His comprehension and repetition of prosody were also impaired but less so than expression. CONCLUSIONS: Right medial frontal lesions can induce an affective aprosodia that primarily impairs expression.