Plant Responses to Vegetation Proximity: A Whole Life Avoiding Shade

In high density of vegetation, plants detect neighbors by perceiving changes in light quality through phytochrome photoreceptors. Close vegetation proximity might result in competition for resources, such as light. To face this challenge, plants have evolved two alternative strategies: to either tolerate or avoid shade. Shade-avoiding species generally adapt their development by inducing hypocotyl, stem, and petiole elongation, apical dominance and flowering, and decreasing leaf expansion and yield, a set of responses collectively known as the shade avoidance syndrome (SAS). The SAS responses have been mostly studied at the seedling stage, centered on the increase of hypocotyl elongation. After compiling the main findings about SAS responses in seedlings, this review is focused on the response to shade at adult stages of development, such as petioles of adult leaves, and the little information available on the SAS responses in reproductive tissues. We discuss these responses based on the knowledge about the molecular mechanisms and components with a role in regulating the SAS response of the hypocotyls of Arabidopsis thaliana. The transcriptional networks involved in this process, as well as the communication among the tissues that perceive the shade and the ones that respond to this stimulus will also be briefly commented.IR-V holds a Beatriu de Pinós contract from the Agència de Gestió D’Ajuts Universitaris i de Recerca (AGAUR, Generalitat de Catalunya). Our research is supported by grants from the Spanish Ministerio de Economía y Competitividad (BIO2014-59895-P) and AGAUR (2014-SGR447 and Xarba) to JFM-G.Peer reviewedPeer Reviewe

Presencia de la medicina en las novelas del mago Harry Potter

La medicina tiene infl uencia importante en la literatura de fi cción. Este artículo señala la relación entre el ejercicio contemporáneo de la medicina y la obra narrativa de la inglesa Joanne K. Rowling. Se exponen fragmentos de sus novelas en los que se hace referencia a las diferentes especialidades médicas, así como a sus ejecutantes. La medicina es un elemento indispensable en la construcción de mundos fi cticios; la personalidad del médico que se muestra en las novelas de Harry Potter es apenas distinta de la de los profesionales en la vida real. Abstract: Medicine has a significant influence in fiction literature. This essay emphasizes the association of the contemporary practice of medicine and the narrative work of Joanne K. Rowling´s novels. It shows passages of her novels in which she talks about the different medical specialties and its performers. Medicine is an indispensable element for the construction of fictitious worlds, and the physician’s personality shown in Harry Potter´s novels is almost the same that professionals perform in real life

Adicción a las redes sociales y agresividad en adolescentes de una institución educativa Jaén, 2023

La siguiente investigación tuvo como fin determinar la relación entre la adicción a las redes sociales y agresividad en adolescentes de una institución educativa de jaén 2023. Se hizo un estudio cuantitativo de tipo básico, con diseño no experimental, con un alcance descriptivo correlacional. Se trabajo con un total de 186 participantes entre varones y mujeres a los cuales se les aplicó el cuestionario de Adicción a las redes sociales (ARS) Y el Cuestionario de agresión de Buss y Perry (AQ), Ambos instrumentos fueron validados a través de juicio de expertos y contaron con datos psicométricos aceptables para su uso en esta población. Finalmente se encontró que existe relación entre la Adicción a las redes sociales y agresividad en adolescentes, con un p valor 0.004, menor a 0,005. Concluyendo que la adicción a las redes sociales puede determinar agresividad

Light signaling: back to space

Recent work has increased our understanding of the molecular and cellular mechanisms of the phytochrome family of photoreceptors in controlling plant photomorphogenesis. However, the importance of long-distance communication in controlling light responses has received relatively little attention and is poorly understoodPostprint (author's final draft

Psychoactive substances consumers among high school students: Detection and Intervention

Purpose: Identify and treat psychoactive substances consumers (PSC) among high school students at Universidad Autónoma de Nuevo León (UANL); México. Description: A two-phase program (detection and intervention) was designed. Phase one included urine drug testing (UDT) either from direct aleatory sampling or referrals from within university departments under informed consent. Phase two for positive PSC, included an interview for psychological needs identification and cognitive behavioral intervention planning. Between 2017 and 2019, 490 UDT were performed. Results showed 235 PSC (47.9%), 86.4% were males (203) and 13.6% females (32). Most detected substance was cannabis: 218 students (92.7%); less frequent substances detected were cocaine, benzodiazepine, amphetamine and methamphetamine. A mean of 8 intervention sessions per student performed equaled more than 1800 sessions. Tight collaboration in between diverse University Departments was a key. An early PSC detection and intervention offers socioemotional tools to improve academic performance and life project

Hyperpigmentation following Treatment of Frontal Fibrosing Alopecia

Introduction: Frontal fibrosing alopecia (FFA) is a scarring alopecia characterized by progressive recession of the frontotemporal hairline. Current treatment is aimed at stopping progression, and the combination of dutasteride and pimecrolimus is the most effective therapy. Side effects associated with dutasteride are erectile dysfunction as well as breast tenderness and enlargement, while pimecrolimus produces a burning sensation. Case Report: We present a 57-year-old postmenopausal female with a 3-year history of a scarring alopecic plaque in her frontotemporal region. Biopsy confirmed the diagnosis of FFA, and she was started on dutasteride 0.5 mg p.o. q.d., and later, topical pimecrolimus 1% b.i.d. was added. Eight months after initiating treatment, she showed hyperpigmentation on her metacarpophalangeal and interphalangeal joints, as well as on the cheeks and on the chin; dutasteride and pimecrolimus were discontinued. After 5 months of follow-up, her hyperpigmentation improved by 80% only by using photoprotection. Conclusion: Because of the variable clinical course of FFA, treatment is focused on halting its progression. Several therapeutic agents have been evaluated and the combination of dutasteride and pimecrolimus has shown a high response rate. There is no reported evidence of hyperpigmentation associated with this combination

Gastroprotective Mechanism and Ulcer Resolution Effect of Cyrtocarpa procera

Gastric ulcers are a worldwide health problem and their poor healing is one of the most important causes for their recurrence. We have previously reported the remarkable gastroprotective and anti-Helicobacter pylori activities of the methanolic extract (CpMet) of Cyrtocarpa procera bark. This work investigates, in a murine model, the CpMet gastroprotective mechanism and establishes its preclinical efficacy in the resolution of ethanol-induced gastric ulcers. The results showed that the gastroprotective activity of CpMet is mainly associated with endogenous NO and prostaglandins, followed by sulfhydryl groups and KATP channels. Furthermore, CpMet (300 mg/kg, twice a day) orally administered during 20 consecutive days promoted an ulcer area reduction of 62.65% at the 20th day of the treatment. The effect was confirmed macroscopically by the alleviation of gastric mucosal erosions and microscopically by an increase in mucin content and a reduction in the inflammatory infiltration at the site of the ulcer. No clinical symptoms or signs of toxicity were observed in the treated animals. The results indicate the safety and efficacy of CpMet in promoting high quality of ulcer healing by different mechanisms, but mostly through cytoprotective and anti-inflammatory effects, making it a promising phytodrug for ulcer treatment

Specific educational needs detection in Autism spectrum disorder (ASD) in superior middle level students students

Purpose: Detection ASD and intervention in superior middle level students at Universidad Autónoma de Nuevo León (UANL), Mexico. Description: Upon admission to superior middle level at UANL, modified Gilliam Asperger\u27s disorder scale (GADS) was applied to parents in a Program to identify behavioral characteristics associated to ASD. Parents of students with positive GADS were informed and students were scheduled for standard psychological testing in order to evaluate cognitive process, study habits, social anxiety and self-esteem, prior to an intervention. From 2014 to 2020, 178 013 GADS were applied; there were 332 (0.19%) students with definite or suggestive pattern of ASD. Among them, 247 (74.4%) consented to continue in Program to receive psychologic and pedagogic intervention, according to found needs. During program, an intense collaboration of all superior middle level education Departments at UANL was shown. This Program promotes inclusive education in order to transform the learning process so that educational needs of ADS students are met. This implies a team effort with clear levels of responsibilities and fields of action

Procesos cognitivos básicos en la adquisición de la lectura y comprensión en niños y niñas del 6º grado de Educación Primaria, de la Escuela “Francisco I. Madero”, La Cantera, Fresnillo, Zacatecas, 2019-2020: mejorando hábitos lectores

La investigación “procesos cognitivos básicos en la adquisición de la lectura y comprensión, en niñas y niños del 6° grado de educación primaria de la escuela “Francisco I. Madero”, La Cantera, Fresnillo, Zacatecas, 2019–2020: mejorando hábitos lectores”, indaga sobre la problemática que afectó al 6° grado de dicho plantel, la constante renuencia y el desinterés por practicar la lectura. Por consiguiente, para mejorar hábitos de lectura y comprensión lectora, se diseñaron, aplicaron y evaluaron actividades que favorecieron cambios significativos. Así, se implementaron propuestas, que permitieron mejorar hábitos lectores y crearon el gusto por leer cualquier tipo de texto