Juan F Loro

Juan F Loro
  • University of Las Palmas de Gran Canaria

About

35
Publications
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Introduction
Skills and Expertise
Current institution
University of Las Palmas de Gran Canaria

Publications

Publications (35)
Article
Full-text available
Recent studies suggest that teacher messages can affect students’ well-being. Using a multilevel, variable, and person-centred approach, this study aimed to identify profiles of students according to their teachers’ use of engaging messages and analyse the relation among these profiles and teacher-student relatedness and students’ subjective vitali...
Article
Full-text available
Previous studies have shown that teacher messages are related with many school-related outcomes, such as students’ engagement and performance. However, it is still unknown how the combination of different elements within teacher messages relate with these outcomes. Based on the message framing theory and the self-determination theory, the present s...
Article
Resumen Estudios previos han demostrado que los mensajes del profesorado están relacionados con múltiples variables a nivel escolar, entre ellas, la implicación y el rendimiento de los estudiantes. Sin embargo, aún se desconoce cómo la combinación de los distintos elementos de estos mensajes se relaciona con estas variables. Fundamentado en la teor...
Article
Full-text available
“If you work hard you will learn interesting facts”.“Unless you work hard you will get into trouble”. These are examples of engaging messages teachers use to encourage engagement among their students. These kind of messages have been recently addressed by researchers, yet the reason why teachers use certain messages remains unexplored. This study a...
Conference Paper
Full-text available
Teachers’ communicative style has been recently addressed by researchers, yet the reason why teachers use a certain style remains unexplored. This study aimed to identify profiles of teachers’ communicative style and how these relate to teachers’ needs (autonomy, relatedness and competence) and students’ performance. The sample comprised a total of...
Conference Paper
Full-text available
Introducción: "Si estudias, podrás disfrutar de esta asignatura" "Si no estudias, terminarás repitiendo de curso". Estas frases son algunos ejemplos de los mensajes que puede emplear el profesorado. Investigaciones previas han observado que estos mensajes afectan al bienestar y rendimiento del alumnado. Sin embargo, estos estudios han explorado úni...
Article
Full-text available
Melatonin is present in all living organisms where it displays a diversity of physiological functions. Attenuation of melanogenesis by melatonin has been reported in some mammals and also in rodent melanoma cells. However, melatonin may also stimulate melanogenesis in human melanoma cells through mechanisms that have not yet been revealed. Using th...
Conference Paper
Full-text available
To promote study, teachers can rely on loss-framed messages (e.g. if you don’t study, you’ll fail and will have to study in the summer) or gain-framed (e.g. if you study, you’ll be able to choose what to study when you finish high school). The aim of this study was to identify clusters of teachers who use similar messages and to analyse, between cl...
Conference Paper
“Si estudias, podrás elegir qué estudiar al terminar secundaria”; “si estudias, podrás disfrutar con esta asignatura”. Estos mensajes son ejemplos que pueden utilizar los profesores para animar a sus estudiantes a dedicar tiempo a las tareas escolares. En estudios previos se ha observado que los mensajes que utilizan los profesores en clase tienen...
Article
Full-text available
The objective of this study was to identify the major socio-demographic, health, and environmental determinants of stunting among children aged 0-59 months from the Tete province (Mozambique) and offering useful information for future healthcare strategies and interventions. A case-control study was conducted among 282 (162 boys; 120 girls) childre...
Article
Resumen Antecedentes y objetivo El síndrome del desfiladero escapulotorácico (SDT) es el exceso de presión en el haz neurovascular que pasa entre el escaleno anterior y el medio. El linfedema es la complicación más común e incapacitante en las mujeres tras la cirugía del cáncer de mama. El objetivo de este trabajo será mostrar la relación que pued...
Article
Central vascular cannulation is not a risk-free procedure, especially in pediatric patients. Newborn and infants are small and low-weighted, their vascular structures have high mobility because of tissue laxity and their vessels are superficial and with small diameter. These characteristics, together with the natural anatomical variability and poor...
Article
Melatonin is an endogenous indoleamine with a wide range of biological functions. In addition to modulating circadian rhythms, it plays important roles in the health as an antioxidant. Melatonin has also the ability to induce apoptosis in cancer cells and to enhance the antitumoral activity of chemotherapeutic agents. In the present study, the effe...
Article
Flavonoids have attracted great interest due to their possible anticancer activities. Here we investigated the antiproliferative activity of the flavonoids isolated from Baccharis scandens against human leukemia cell lines and found that the methoxyflavonoid gardenin B was the most cytotoxic compound against HL-60 and U-937 cells, showing IC50 valu...
Article
Objective: (a) To present a model that simulates the vascular system for training ultrasound-guided vascular access in pediatrics patients; (b) to ultrasound-guided vascular cannulation in the model. Results: The model consisted of two components: (a) muscular component: avian muscle, (b) vascular component: elastic tube-like structure filled wi...
Article
Full-text available
Several studies have indicated that dietary fiber may have a protective effect on gastrointestinal mucosa. The aim of this study was to evaluate the protective action of the soluble fiber Plantago ovata husk against intestinal damage. To evaluate the anti-ulcerogenic effect on duodenal mucosa of the soluble fiber Plantago ovata husk, low-dose acety...
Article
Melatonin is a naturally occurring indoleamine synthesized in the pineal gland that exhibits an extensive repertoire of biological activities. An increasing number of studies indicate that melatonin protects normal cells, while it reducing cancer cell proliferation. In this study, we investigated the effect of melatonin on the growth of the human l...
Article
Objectives: To investigate epidemiologic, etiopathogenic and clinical factors associated with emergency renal colic (RC). METHODS ANDS RESULTS: We performed a prospective cross-sectional multicenter case-control study of 146 patients treated for RC at emergency departments. Data collected included age, sex, localization/severity of pain, symptoms,...
Article
Melatonin is an indoleamine synthesized in the pineal gland, and after its release into the blood, it has an extensive repertoire of biological activities, including antitumoral properties. In this study, we found that melatonin reduced the growth of the human melanoma cells SK-MEL-1. The antiproliferative effect was associated with an alteration i...
Article
In this study, we investigated the effect of three synthetic alpha-methylene-gamma-butyrolactones (MBL) on viability of 10 human tumor cell lines and found that these lactones were highly cytotoxic against leukemia cells. Studies performed on HL-60 cells indicate that MBL induce G(2)-M arrest and apoptosis through a caspase-dependent mechanism. Apo...
Article
Melatonin is an indoleamine that is synthesized in the pineal gland and has an extensive repertoire of biological activities. In the present study, we found that melatonin reduced the growth of the human myeloid leukemia cells HL-60, inhibiting progression from G(1) to S phase of the cell cycle and increasing apoptotic cell death. Furthermore, mela...
Article
To perform an epidemiological, pathologic and therapeutic study of asymptomatic bacteriuria (AB) in a population of outpatient women. Transversal study for detection of AB in 1718 outpatient women 14-year-old or older. All patients complied with the inclusion/exclusion criteria for the study. Two groups of patients, with AB (n = 113) and controls w...
Article
Previous studies have reported that melatonin protects cells and tissues against stressful stimuli. In the present study using HL-60 cells, we show that cells acquire increased resistance to apoptosis normally induced by heat shock when they are incubated with melatonin. This effect of melatonin is saturable at nanomolar concentrations and appears...
Article
Opuntia dillenii (Ker-Gawl) Haw is a cactus that belongs to the family Opuntiae. Lyophilized aqueous extract of the fruits of the plant, used in Canarian traditional medicine for gastrointestinal and bronchial troubles, was evaluated for analgesic and anti-inflammatory properties in rats and mice. The Opuntia dillenii extract (100-400 mg/kg, i.p.)...
Article
The positive chronotropic effect of bradykinin was investigated in isolated spontaneously beating atria of the rat. Cumulative additions of bradykinin (0.3-100 nM) caused a concentration-dependent increase in the beating rate of the atria by maximally 35+/-4 beats/min, approximately 25% of the 1 microM isoprenaline-induced maximal responses. In con...
Article
The positive chronotropic effect of bradykinin was investigated in the pithed rat preparation. Cumulative treatment with bradykinin (0.20 nmol/kg-6.59 mumol/kg, intravenous [i.v.]) caused a dose-dependent increase in heart rate (HR) by a maximum of 80 +/- 3.3 beats min-1. In contrast, the active metabolite of bradykinin and selective bradykinin B1-...
Article
The retinotectal projection of reptiles is largely crossed. The intertectal commissure is an important pathway that interconnects directly the two sides of the optic tectum. The rostrocaudal topography of intertectal commissural fibers at the dorsal midplane was examined by means of the in vitro horseradish peroxidase (HRP) labelling technique in t...

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