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Noradrenaline (NA) and serotonin (5-HT) induce nociception and antinociception. This antagonistic effect can be explained by the dose and type of activated receptors. We investigated the existence of synergism between the noradrenergic and serotonergic systems during peripheral antinociception. The paw pressure test was performed in mice that had increased sensitivity by intraplantar injection of prostaglandin E2 (PGE2). Noradrenaline (80 ng) administered intraplantarly induced an antinociceptive effect, that was reversed by the administration of selective antagonists of serotoninergic receptors 5-HT1B isamoltan, 5-HT1D BRL15572, 5-HT2A ketanserin, 5-HT3 ondansetron, but not by selective receptor antagonist 5-HT7 SB-269970. The administration of escitalopram, a serotonin reuptake inhibitor, potentiated the antinociceptive effect at a submaximal dose of NA. These results, indicate the existence of synergism between the noradrenergic and serotonergic systems in peripheral antinociception in mice.

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This study explores the Hydrothermal Carbonization (HTC) treatment of lignocellulosic biomass blends, delving into the influence of several key parameters: temperature, additive nature and dosage, residence time, and biomass composition. Rapeseeds, Pinus radiata sawdust, oat husks, and pressed olive served as the studied biomasses. One hundred twenty-eight experiments were conducted to assess the effects on mass yield (MY), energy yield (EY), higher heating value (HHV), and final ash content (ASH) by a Factorial Experimental Design. The derived model equations demonstrated a robust fit to the experimental data, averaging an R2 exceeding 0.94, affirming their predictive accuracy. The observed energy yield ranged between 65% and 80%, notably with sawdust and olive blends securing EY levels surpassing 70%, while rapeseed blends exhibited the highest HHV at 25 MJ/kg. Temperature emerged as the most influential factor, resulting in an 11% decrease in MY and a substantial 2.20 MJ/kg increase in HHV. Contrastingly, blend composition and additive presence significantly impacted ASH and EY, with all blends exhibiting increased ASH in the presence of additives. Higher initial hemicellulose and aqueous extractive content in raw biomass correlated proportionally with heightened HHV.

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The present study aimed to evaluate the possible peripheral H2O2-induced antinociception and determine the involvement of opioidergic, cannabinoidergic and nitrergic systems, besides potassium channels in its antinociceptive effect. Prostaglandin E2 was used to induce hyperalgesia in male Swiss mice using the mechanical paw pressure test. H2O2 (0.1, 0.2, 0.3 µg/paw) promoted a dose-dependent antinociceptive effect that was not observed in contralateral paw. Female mice also showed antinociception in the model. The partial H2O2-induced antinociception was potentiated by the inhibitor of catalase enzyme, aminotriazole (40, 60, 80 µg/paw). The antinociception was not reversed by opioid and cannabinoid receptor antagonists naloxone, AM 251 and AM 630. The involvement of nitric oxide (NO) was observed by the reversal of H2O2-induced antinociception using the non-selective inhibitor of nitric oxide synthases L-NOarg and by inhibition of iNOS (L-NIL), eNOS (L-NIO) and nNOS (L-NPA). ODQ, a cGMP-forming enzyme selective inhibitor, also reversed the antinociception. The blockers of potassium channels voltage-gated (TEA), ATP-sensitive (glibenclamide), large (paxillin) and small (dequalinium) conductance calcium-activated were able to revert H2O2 antinociception. Our data suggest that H2O2 induced a peripheral antinociception in mice and the NO pathway and potassium channels (voltage-gated, ATP-sensitive, calcium-activated) are involved in this mechanism. However, the role of the opioid and cannabinoid systems was not evidenced.

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La distribución inequitativa del talento humano en salud afecta la capacidad de los sistemas de ofrecer servicios esenciales. En la provincia de Córdoba, el primer nivel de atención es responsabilidad de los municipios, pero el nivel provincial procura sostener la rectoría y ser garante del derecho a la salud. En ese marco, se desarrolló un programa para reducir las brechas en la distribución de médicos: el Plan Cordobés de Médicos del Interior. Acompañando ese plan se ejecutó un convenio específico con la Universidad Nacional de Córdoba para garantizar la formación en la especialidad de Medicina Familiar y General. Ingresaron al programa 170 personas, y hoy contamos con 98 médicos en formación o seguimiento. En este artículo damos cuenta de la experiencia docente, los desafíos y dificultades que supuso afrontar una formación en lugares de práctica variados, y con el aporte de las tecnologías de la información y comunicación. Esperamos que la experiencia sirva para transmitir los aprendizajes de nuestra práctica (AU)

The inequitable distribution of human talent in health affects the capacity of systems to offer essential services. In the province of Córdoba, the primary level of care is the responsibility of municipalities, but the provincial level aims to maintain leadership and guarantee the right to health. Within this framework, a program was developed to reduce gaps in the distribution of physicians: the Cordobés Plan for Interior Physicians. Accompanying this plan, a specific agreement was executed with the National University of Córdoba to ensure training in the specialty of Family and General Medicine. 170 individuals entered the program, and today we have 98 physicians in training or under supervision. In this article, we give an account of the teaching experience, the challenges, and difficulties involved in facing training in various practice settings, along with the contribution of information and communication technologies. We hope that this experience serves to transmit the lessons learned from our practice (AU)

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Market concentration among buyers of recycled materials is a phenomenon discussed since the 1980 s by the anti-trust literature. Yet, there is still a lack of studies on simultaneous market concentration on both the supply and demand sides. This is particularly relevant when Extended Producer Responsibility (EPR) policies produce two-sided waste generation and valorisation markets. Thus, the purpose of this study is to explore the link between market concentration on the generation side and market share on the valorisation side. Specifically, this research addresses the case of valorisation of commercial and industrial non-hazardous waste in Chile. The analysis covers 261 companies that valorised industrial and commercial non-hazardous waste between 2015 and 2019. Being part of the top 10 % of generator companies in Chile is significantly correlated to higher valorisation market share, in a context in which mean market share per company decreased, total tons valorised stagnated, and the country-level valorisation rate diminished.

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It has already been shown that serotonin can release endocannabinoids at the spinal cord level, culminating in inhibition of the dorsal horn. At the peripheral level, cannabinoid receptors modulate primary afferent neurons by inhibiting calcium conductance and increasing potassium conductance. Studies have shown that after the activation of opioid receptors and cannabinoids, there is also the activation of the NO/cGMP/KATP pathway, inducing cellular hyperpolarization. In this study, we evaluated the participation of the cannabinoid system with subsequent activation of the NO/cGMP/KATP pathway in the peripheral antinociceptive effect of serotonin. The paw pressure test of mice was used in animals that had their sensitivity to pain increased due to an intraplantar injection of PGE2 (2 µg). Serotonin (250 ng/paw), administered locally in the right hind paw, induced antinociceptive effect. CB1 and CB2 cannabinoid receptors antagonists, AM251 (20, 40 and 80 µg) and AM630 (25, 50 and 100 µg), respectively, reversed the serotonin-induced antinociceptive effect. MAFP (0.5 µg), an inhibitor of the FAAH enzyme that degrades anandamide, and JZL184 (3.75 µg), an inhibitor of the enzyme MAGL that degrades 2-AG, as well as the VDM11 (2.5 µg) inhibitor of anandamide reuptake, potentiated the antinociceptive effect induced by a low dose (62. 5 ng) of serotonin. In the evaluation of the participation of the NO/cGMP/KATP pathway, the antinociceptive effect of serotonin was reversed by the administration of the non-selective inhibitor of NOS isoforms L-NOarg (12.5, 25 and 50 µg) and by the selective inhibitor for the neuronal isoform LNPA (24 µg), as well as by the soluble guanylate cyclase inhibitor ODQ (25, 50 and 100 µg). Among potassium channel blockers, only Glibenclamide (20, 40 and 80 µg), an ATP-sensitive potassium channel blocker, reversed the effect of serotonin. In addition, intraplantar administration of serotonin (250 ng) was shown to induce a significant increase in nitrite levels in the homogenate of the plantar surface of the paw of mice. Taken together, these data suggest that the antinociceptive effect of serotonin occurs by activation of the cannabinoid system with subsequent activation of the NO/cGMP/KATP pathway.

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Las enfermedades no transmisibles (ENT) son una creciente preocupación global que afecta tanto a la atención médica como a la calidad de vida. Los programas de automanejo de enfermedades crónicas como el denominado "Tomando Control de su Salud" (TCS), se han vuelto estrategias efectivas para abordar este problema. OBJETIVO: Evaluar el resultado del programa TCS, versión en línea, en las variables automanejo y autoeficacia, en muestras de personas con ENT de México y Perú, durante la pandemia por COVID-19. METODOLOGÍA: El diseño del estudio fue cuasiexperimental con mediciones independientes (intervenidos y controles) y mediciones en línea, al inicio y término de la intervención; evaluadas con Partners in Health Scale y la Escala de Autoeficacia. Los cambios en el tiempo se examinaron mediante la prueba de Wilcoxon. RESULTADOS: De los 114 participantes, la mayoría eran mujeres (83.3%) con una edad promedio de 58.8 años. Antes de la intervención, los grupos fueron iguales en las variables de estudio. No se encontró ningún aumento significativo en las variables de estudio en el grupo control, sin embargo, hubo un aumento estadísticamente significativo en la autoeficacia y automanejo en el grupo intervenido. CONCLUSIONES: El programa TCS en línea contribuyó al aumento de la autoeficacia, el automanejo, el conocimiento de la enfermedad, la adherencia al tratamiento y el manejo de síntomas en participantes con ENT de México y Perú durante la pandemia de COVID-19. Esto respalda la evidencia de que el programa mejora la salud y la calidad de vida de quienes viven con estas enfermedades.

Non-communicable diseases (NCD) are a growing global concern that affects both healthcare and quality of life. Chronic disease self-management programs, such as "Tomando Control de su Salud" (TCS), have become effective strategies to address this problem. PURPOSE: To evaluate the results of the TCS program, online version, in the self-management and self-efficacy variables, in samples of people with NCD from Mexico and Peru, during the COVID-19 pandemic. METHODOLOGY: The study design was quasi-experimental with independent measurements (interventions and controls) and online measurements, at the beginning and end of the intervention; evaluated with the Partners in Health Scale and the Self-Efficacy Scale. Changes over time were examined using the Wilcoxon test. RESULTS: Out of the 114 participants, most were women (83.3%) with an average age of 58.8 years. Before the intervention, the groups were equal in the study variables. No significant increase in the study variables was found in the control group; however, there was a statistically significant increase in self-efficacy and self-management in the intervention group. CONCLUSIONS: The online TCS program contributed to increased self-efficacy, self-management, disease knowledge, treatment adherence, and symptom management in participants with NCD from Mexico and Peru during the COVID-19 pandemic. This supports evidence that the program improves the health and quality of life of those living with these illnesses.

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Global population growth and rising consumption levels have significantly increased resource use and energy demand, leading to higher greenhouse gas concentrations and increased waste output. As a result, alternative waste treatment methods for sustainable municipal solid waste (MSW) management are crucial. This research evaluates the efficiency of integrating hydrothermal carbonization (HTC) and gasification for an optimized MSW biomass blend. HTC was conducted for one hour at 220°C in a 5 L reactor, followed by gasification in a hybrid porous medium gasifier. The study investigated the effects of different filtration speeds on combustion temperature and hydrogen concentrations. The results showed that a filtration speed of 35 cm/s resulted in a maximum combustion temperature of 1035.7°C. The temperature remained consistent across filter speeds, while higher velocities yielded higher hydrogen concentrations. Additionally, increasing the filtration velocity raised temperatures in the hybrid bed while increasing the volumetric fraction of biomass decreased maximum temperatures. This research contributes to the understanding of merging HTC and gasification for MSW biomass blend treatment, aiming to reduce environmental impacts and costs while promoting renewable resources for long-term energy production.

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